EP0679504A1 - Method and apparatus for making dunnage by crumpling paper - Google Patents

Method and apparatus for making dunnage by crumpling paper Download PDF

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Publication number
EP0679504A1
EP0679504A1 EP94440027A EP94440027A EP0679504A1 EP 0679504 A1 EP0679504 A1 EP 0679504A1 EP 94440027 A EP94440027 A EP 94440027A EP 94440027 A EP94440027 A EP 94440027A EP 0679504 A1 EP0679504 A1 EP 0679504A1
Authority
EP
European Patent Office
Prior art keywords
assembly
wheels
paper
wheel
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94440027A
Other languages
German (de)
French (fr)
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EP0679504B1 (en
Inventor
Théodore Baumuller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GIB INTERNATIONAL S.A.
Original Assignee
NATUREMBAL
Naturembal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AT94440027T priority Critical patent/ATE142941T1/en
Application filed by NATUREMBAL, Naturembal SA filed Critical NATUREMBAL
Priority to ES94440027T priority patent/ES2093502T3/en
Priority to EP94440027A priority patent/EP0679504B1/en
Priority to DK94440027.4T priority patent/DK0679504T3/en
Priority to DE69400576T priority patent/DE69400576T2/en
Priority to NZ283746A priority patent/NZ283746A/en
Priority to BR9507491A priority patent/BR9507491A/en
Priority to PCT/EP1995/001238 priority patent/WO1995029055A1/en
Priority to CN95192668A priority patent/CN1105011C/en
Priority to RU96122524A priority patent/RU2127665C1/en
Priority to PL95317835A priority patent/PL180881B1/en
Priority to JP7527307A priority patent/JPH10505288A/en
Priority to AU22157/95A priority patent/AU703893B2/en
Priority to CZ19963085A priority patent/CZ9603085A3/en
Priority to HU9602870A priority patent/HUT76120A/en
Priority to CA002187806A priority patent/CA2187806C/en
Priority to US08/426,468 priority patent/US6106452A/en
Publication of EP0679504A1 publication Critical patent/EP0679504A1/en
Application granted granted Critical
Publication of EP0679504B1 publication Critical patent/EP0679504B1/en
Priority to NO964466A priority patent/NO964466D0/en
Priority to MXPA/A/1996/005025A priority patent/MXPA96005025A/en
Priority to BG100971A priority patent/BG61868B1/en
Priority to GR960403501T priority patent/GR3022063T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B31D5/0047—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material involving toothed wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0017—Providing stock material in a particular form
    • B31D2205/0023—Providing stock material in a particular form as web from a roll
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/967—Dunnage, wadding, stuffing, or filling excelsior

Definitions

  • the present invention relates to machines for producing a cushioning / padding material consisting of a superposition of sheets of paper folded back on themselves and subjected to pleating / creasing. It also targets a new structure for this material and a new process for its manufacture.
  • the present invention eliminates these drawbacks, thanks to an apparatus of fundamentally different design, and comprising a combination of means making it possible to obtain a cushioning / padding material of the above type, but of much greater cohesion, and this from paper. recycled, much less expensive, and without creating tear points.
  • the invention consists in having the drive, crumpling and assembly functions fulfilling leading to a material having a high cohesion by different and separate organs, each of which is adapted to its own function to eliminate the known disadvantages.
  • the invention also relates to various arrangements improving inter alia the operation of the system described above.
  • the mechanical assembly which represents the essence of the invention, is mounted in a cradle, in which the upper axes are fixed, as well as the reduction gear which joins them together, while the lower axes are distributed over a spreader tilting back and forth and subjected to a couple of common springs exerting their effect at a point of said spreader located between the rear and the front about 1/3 of the rear end.
  • the invention relates to a simplified arrangement for feeding paper, guaranteeing an optimum volume of the material subjected to said mechanical assembly, and which will be described below.
  • the invention also relates to a method for the manufacture of cushioning / padding materials, of the general type in which a stack of overlapping sheets of paper, after folding or winding of its longitudinal edges, is subjected to a driving action, an action substantially transverse creasing and a compression action in successive locations to ensure cohesion, the essential characteristic of this process residing in the fact that said actions are exercised successively and independently of one another.
  • the crumpling action results from braking exerted on the material downstream of the drive action, without the intervention of means acting directly on the material.
  • the invention relates to the new cushioning / padding material obtained by this process and / or this machine, this material having the desired volume thanks to the crumpling and the desired cohesion thanks to the compression assembly, but without weakened zones, this which allows it to be produced in particular from low-end recycled paper.
  • the invention essentially resides in the design and production of the mechanical assembly assembled in the cradle 4, the various elements and their arrangement of which are shown in FIGS. 3-5.
  • This assembly comprises a first pair of superimposed wheels (FIG. 3), namely an upper wheel or drive wheel 8 rotating on an axle 9 mounted in the lateral flanges 10-10 ′ of the cradle 4, and a lower support wheel 11, rotating on an axis 12 carried by a lifting beam 13, mounted resiliently tilting relative to the cradle 4 as it appears in Figure 5, and will be described later in more detail.
  • a first pair of superimposed wheels FIG. 3
  • an upper wheel or drive wheel 8 rotating on an axle 9 mounted in the lateral flanges 10-10 ′ of the cradle 4
  • a lower support wheel 11 rotating on an axis 12 carried by a lifting beam 13, mounted resiliently tilting relative to the cradle 4 as it appears in Figure 5, and will be described later in more detail.
  • the same mechanical assembly comprises a second pair of superimposed wheels (FIG. 4), namely an upper wheel or compression wheel 14, rotating on an axis 15 mounted in the lateral flanges 10, 10 'and driven in rotation by the motor 5, and a lower bearing wheel 17, rotating on an axle 18 also carried by the lifter 13 mounted resiliently tilting relative to the cradle 4.
  • a second pair of superimposed wheels FIG. 4
  • an upper wheel or compression wheel 14 rotating on an axis 15 mounted in the lateral flanges 10, 10 'and driven in rotation by the motor 5
  • a lower bearing wheel 17 rotating on an axle 18 also carried by the lifter 13 mounted resiliently tilting relative to the cradle 4.
  • the two axes 9 and 15 are positively driven by the motor 5, namely the axis 15 directly and the axis 9 via a reducing gear train shown diagrammatically in 16 a , 16 b , 16 c between Figures 3 and 4.
  • the drive wheel 8 has a generally cylindrical appearance, with a central portion 19 in the form of a toric gutter with a substantially semi-circular section, and two end portions 20, 20 ′, each having a cylindrical periphery interrupted at regular intervals by flats 21, with the particularity that the flats 21 of the portion 20 face cylindrical zones 22 'of the portion 20', while conversely the flats 21 'of the portion 20' face cylindrical zones 22 of the portion 20.
  • the support wheel 11 with which the drive wheel 8 cooperates is in the form of a generally cylindrical shape but comprising in its median portion a toroidal bead 23, the cross section of which corresponds substantially to the cross section wheel trough 8.
  • This mode of driving the strip of material M is original in itself and forms part of the invention.
  • the compression wheel 14 has a generally cylindrical appearance and comprises two portions of crenellated ends 24, 24 ′ joined by a neutral central portion 25; moreover, the support wheel 17 is a smooth cylinder on which the grooves 24, 24 ′ will roll, the strip material M, coming from the first pair of wheels 8-11 being clamped between said teeth and this smooth surface, with a variable force, as explained below.
  • This compression is however limited and cannot damage said material, since the latter is not deformed between gear teeth meshing with one another as in previous systems.
  • the action of the grooves 24, 24 'on the material is therefore to ensure by this simple compression, the assembly of the sheets of said material and the cohesion of this assembly, by crushing the folds of the paper.
  • the power ratio can be 1 / 3-2 / 3, but it can be chosen different if desired, by modifying the application points 27, 27 '.
  • its ends can pass through vertical slots 34, 34 'of the flanges 10, 10' of the cradle 4.
  • the crumpling function is not fulfilled by gear systems as in the previous systems, with the resulting drawbacks, but by a purely mechanical phenomenon which does not affect the solidity of the material.
  • the ratio 1.9 is considered to be preferred, but could be different, depending on the circumstances, for example the degree of wrinkling desired. Likewise, this ratio is valid for wheels 8 and 14 of the same diameter, but it could be different for wheels of different diameters.
  • the major advantage of this characteristic is that, unlike previous devices, the crumpling of the material M is obtained "spontaneously", without the intervention of any member capable of damaging the material, for example toothed wheels, such as by example those mentioned in document EU-A-2 427 834, which give rise to tears which impose a restriction on the application of such devices to very resistant papers.
  • any member capable of damaging the material for example toothed wheels, such as by example those mentioned in document EU-A-2 427 834, which give rise to tears which impose a restriction on the application of such devices to very resistant papers.
  • current quality paper such as low-end recycled paper.
  • the invention provides for creating the material M from the paper of the reel 2 by means of a guide system ensuring the folding of the longitudinal edges in a simple and effective manner.
  • This system comprises, firstly, a pair of flanged pulleys 30, for example of rubber, mounted adjustable and rotating on an axis 31, tilting around two arms pivoting at 32 in the direction of the arrow F (FIG. 2) of so as to clear the inlet of the hopper 3 to facilitate the loading of paper from the reel 2 into the machine.
  • the pulleys 30 are adjusted axially to any desired spacing, for example at 30 'in order to adapt to the needs of the different qualities of paper, which can or must be folded down according to different radii of curvature in the hopper 3.
  • the assembly 30-31 When the paper is engaged in the hopper 3, the assembly 30-31 is raised by tilting it around 32 in the direction opposite to the arrow F, to the vertical position (FIG. 2). In this position, the flanges 30 help to fold the side edges of the overlapping sheets so that they wrap around a plate 33 mounted inside the hopper 3. At the exit of the hopper 3, the superposition of sheets is completely wound on itself and around said plate 33, constituting a material M, which is then taken up by the drive torque 8/11 in the cradle 4.
  • the underside of the hopper 3 consists of two sheets 40, 40 ′, cut obliquely so as to guide the entry of the longitudinal edges during the folding of the sheets constituting the material M subjected to entrainment, crumpling and assembly.
  • the upper and lower plates of the hopper are extended at 41 and 42, on each side of the wheel pairs 8/11 and 14/17, to guide the material M to the cutting system 6.
  • the front of the plate 33 ends in a rounded drop 35, which serves to accommodate the sheet M on its upper part.
  • the rear portion of the plate 33 has triangular vertical edges 36, which restore volume to the edges of the mattress formed by the folding of the sheet M caused by the hopper 3.
  • a spring 40 serving to hold and press the flanges 30 against said rounded drop 35 during the operation of the machine.
  • the invention finally also relates to all the equivalent stages or all the bodies equivalent to those which have just been described by way of example.

Abstract

The procedure consists of placing sheets of paper on top of one another, folding them lengthwise and passing through a crumpling assembly before compressing at intervals. The different operations are performed separately and in sequence, with the crumpling formed automatically by a difference between feed and assembly speeds. The machine on which the procedure is carried out has independent mechanisms to perform the different operations. The drive comprises wheels (9,11) set one above the other and with the upper wheel having milled outer edges. The crumpling operation is produced by reduction gears connecting the drive wheels and assembly mechanism (14,17). The assembly mechanism wheels rotate more slowly than the drive wheels, so that the paper is automatically crumpled between them. <IMAGE>

Description

La présente invention concerne les machines servant à réaliser un matériau de calage / rembourrage constitué par une superposition de feuilles de papier repliées sur elles-mêmes et soumises à un plissage / froissage. Elle vise également une nouvelle structure de ce matériau et un nouveau procédé pour sa fabrication.The present invention relates to machines for producing a cushioning / padding material consisting of a superposition of sheets of paper folded back on themselves and subjected to pleating / creasing. It also targets a new structure for this material and a new process for its manufacture.

Des machines de ce genre sont connues depuis longtemps. Ainsi, dans le document US-A-3 603 216, dont le dépôt initial remonte à 1968, est décrite une machine dans laquelle une superposition de feuilles de papier est guidée dans une trémie en forme de tronc de pyramide horizontale se rétrécissant vers l'avant de manière à ce que les bords longitudinaux de cette pile de feuilles soient repliés ou enroulés vers l'intérieur, puis entre des paires de roues dentées superposées engrenant entre elles, de manière à subir d'une part un effet d'entraînement et d'autre part un effet de froissement, d'ondulation et de compression entre chaque couple de dents, lequel assure un assemblage de ladite pile de feuilles repliées sur elles-mêmes, le produit sortant de cette machine se présentant sous forme d'un "bourrelet rembourré" ayant une cohésion permanente, et approprié pour le calage d'articles divers dans des conditionnements.Machines of this kind have been known for a long time. Thus, in document US Pat. No. 3,603,216, the initial filing of which dates back to 1968, a machine is described in which a superposition of sheets of paper is guided in a hopper in the form of a trunk of horizontal pyramid tapering towards the front so that the longitudinal edges of this stack of sheets are folded or rolled inwards, then between pairs of superimposed toothed wheels meshing together, so as to undergo on the one hand a ripple effect and d on the other hand an effect of crumpling, undulation and compression between each pair of teeth, which ensures an assembly of said stack of sheets folded back on themselves, the product leaving this machine being in the form of a "bead padded "with permanent cohesion, and suitable for wedging various articles in packaging.

On peut considérer que la caractéristique fondamentale de ce genre de machine réside dans le fait que ce sont les mêmes roues dentées qui assurent en même temps l'entraînement de la matière première constituée par les feuilles empilées, le froissement dudit empilement pour lui conférer du volume et la compression desdites feuilles entre elles pour leur conférer cette cohésion.We can consider that the fundamental characteristic of this kind of machine resides in the fact that it is the same toothed wheels which ensure at the same time the drive of the raw material constituted by the stacked sheets, the crumpling of said stack to give it volume. and compressing said sheets together to give them this cohesion.

Dans la pratique, cette pluralité de fonctions est à l'origine de plusieurs problèmes, qui on donné lieu à diverses solutions dont aucune n'est complètement satisfaisante.In practice, this plurality of functions is the source of several problems, which have given rise to various solutions, none of which is completely satisfactory.

Ainsi, si l'effort de compression exercé sur les feuilles est suffisant pour assurer l'entraînement des feuilles, il a alors pour conséquence que lesdites feuilles vont se déchirer. A l'inverse, si l'on diminue cette compression pour éviter cette déchirure, alors la cohésion du matériau fini sera insuffisante et le "bourrelet" s'ouvrira en perdant son utilité.Thus, if the compressive force exerted on the sheets is sufficient to ensure the entrainment of the sheets, it then has the consequence that said sheets will tear. Conversely, if this compression is reduced to avoid this tearing, then the cohesion of the finished material will be insufficient and the "bead" will open, losing its usefulness.

Une solution proposée pour concilier ces deux impératifs contradictoires est décrite au document EUR-A-0 427 834, et consiste à prévoir sur les dents des engrenages servant à l'entraînement au froissage et à l'assemblage des feuilles superposées, des portions en saillies pénétrant plus profondément dans l'épaisseur de ces feuilles, avec pour objectif d'aider à la cohésion du produit. Toutefois, les zones ainsi dites "embossées" sont en même temps affaiblies et constituent des amorces de déchirures dudit produit, de sorte qu'une telle machine n'est en réalité utilisable qu'avec des empilements de papier Kraft, proportionnellement beaucoup plus coûteux.A solution proposed to reconcile these two contradictory imperatives is described in document EUR-A-0 427 834, and consists in providing on the teeth of the gears used for the crumpling drive and the assembly of the superimposed sheets, projecting portions. penetrating deeper into the thickness of these sheets, with the aim of helping the cohesion of the product. However, the so-called "embossed" areas are at the same time weakened and constitute tear initiators of the said product, so that such a machine is in reality usable only with stacks of Kraft paper, proportionally much more expensive.

La présente invention élimine ces inconvénients, grâce à un appareillage de conception fondamentalement différente, et comprenant une combinaison de moyens permettant d'obtenir un matériau de calage / rembourrage du type précédent, mais d'une cohésion bien supérieure, et cela à partir de papier recyclé, beaucoup moins coûteux, et sans créer pour autant d'amorces de déchirures.The present invention eliminates these drawbacks, thanks to an apparatus of fundamentally different design, and comprising a combination of means making it possible to obtain a cushioning / padding material of the above type, but of much greater cohesion, and this from paper. recycled, much less expensive, and without creating tear points.

A cet effet, l'invention consiste à faire remplir les fonctions d'entraînement, de froissage et d'assemblage conduisant à un matériau présentant une cohésion élevée par des organes différents et séparés, dont chacun est adapté à sa fonction propre pour en éliminer les inconvénients connus.To this end, the invention consists in having the drive, crumpling and assembly functions fulfilling leading to a material having a high cohesion by different and separate organs, each of which is adapted to its own function to eliminate the known disadvantages.

Plus précisément, dans une machine du genre général précité, selon l'invention :

  • les organes remplissant la fonction d'entraînement consistent en un couple de roues superposées à savoir d'une part une roue supérieure dite d'entraînement ayant l'aspect général d'un cylindre dont la portion médiane a une section en forme de gouttière torique et les portions d'extrémités sont moletées, mais comportent des méplats répartis sur leur périphérie de telle manière que les zones de méplats de l'une des portions d'extrémités soient en face des zones sans méplats de l'autre portion d'extrémité, et d'autre part une roue inférieure dite d'appui ayant l'aspect général d'un cylindre dont la portion médiane a une section en forme de bourrelet torique correspondant sensiblement à la gouttière torique de la roue supérieure, et les portions d'extrémités sont des cylindres sur lesquels roulent les zones sans méplats de la roue supérieure.
More specifically, in a machine of the aforementioned general kind, according to the invention:
  • the organs fulfilling the drive function consist of a pair of superimposed wheels, namely on the one hand an upper wheel called the drive wheel having the general appearance of a cylinder, the middle portion of which has a cross section in the shape of a toric groove and the end portions are knurled, but have flats distributed over their periphery such that the flat areas of one of the end portions are opposite the areas without flats of the other end portion, and on the other hand a said supporting wheel having the general appearance of a cylinder, the middle portion of which has a cross-section in the shape of an O-ring corresponding substantially to the gutter of the upper wheel, and the end portions are cylinders on which roll areas without flats on the upper wheel.

Comme on le verra plus en détail plus loin, l'empilement de feuilles, amené entre les deux roues, est pincé et entraîné entre les portions cylindriques de la roue inférieure et les zones sans méplats des deux portions d'extrémité de la roue supérieure, c'est-à-dire en fait alternativement à droite et à gauche. Ces feuilles sont donc tirées non pas directement axialement vers l'avant, mais sur leur partie gauche puis sur leur partie droite respectivement, par rapport à l'axe de déplacement, la dissymétrie latérale qui en résulte pour la traction étant compensée à chaque méplat successif par la zone en creux relativement souple créée dans les feuilles entre le bourrelet torique et la gouttière torique. C'est grâce à ce mode d'entraînement que les efforts exercés sur le papier n'entraînent aucun déchirement de celui-ci, puisqu'il ne subit à ce stade aucune contrainte, sauf la traction axiale dans le sens du défilement.

  • Les organes assurant la fonction d'assemblage des épaisseurs superposées de papier consistent en un autre couple de roues superposées, à savoir une roue supérieure crénelée et un cylindre inférieur lisse sur lequel roule la périphérie desdites dents, l'empilement de feuilles de papier subissant une certaine compression de la part de ces dents contre le cylindre d'appui. Là encore, il n'y a pas de risque de déchirure, car le papier n'est pas déformé entre des roues engrenant entre elles.
  • Les moyens assurant la fonction froissage consistent en un train d'engrenages réducteurs reliant les roues d'entraînement (situées à l'arrière) et les roues d'assemblage (situées à l'avant) de telle manière que les roues d'entraînement tournent à 1,9 fois la vitesse des roues d'assemblage. Grâce à cette différence de vitesse, le matériau alimente les roues d'assemblage plus vite qu'elles ne tournent et se tasse en se froissant spontanément sans subir pour autant aucune contrainte.
As will be seen in more detail below, the stack of sheets, brought between the two wheels, is pinched and driven between the cylindrical portions of the lower wheel and the flat areas of the two end portions of the upper wheel, that is to say alternately right and left. These sheets are therefore pulled not directly axially forward, but on their left part and then on their right part respectively, relative to the axis of movement, the lateral asymmetry which results for the traction being compensated for each successive flat by the relatively flexible hollow area created in the sheets between the toric bead and the toric gutter. It is thanks to this drive mode that the forces exerted on the paper do not cause any tearing of the latter, since it does not undergo any stress at this stage, except the axial traction in the direction of travel.
  • The members ensuring the function of assembling the superimposed thicknesses of paper consist of another pair of superimposed wheels, namely a crenellated upper wheel and a smooth lower cylinder on which the periphery of said teeth rolls, the stack of sheets of paper undergoing a some compression on the part of these teeth against the support cylinder. Again, there is no risk of tearing, because the paper is not deformed between wheels meshing between them.
  • The means ensuring the crumpling function consist of a train of reducing gears connecting the drive wheels (located at the rear) and the assembly wheels (located at the front) in such a way that the drive wheels rotate. at 1.9 times the speed of the assembly wheels. Thanks to this difference in speed, the material feeds the assembly wheels faster than they turn and settles while crumpling spontaneously without being subjected to any constraint.

Il y a donc combinaison de moyens et d'effets, de l'arrière vers l'avant, entre les roues d'entraînement, le train réducteur et les roues d'assemblage, pour atteindre le résultat cherché, à savoir la création d'un matériau en "bourrelets" présentant une cohésion élevée et sans aucun risque de déchirure.There is therefore a combination of means and effects, from the rear to the front, between the drive wheels, the reduction gear and the assembly wheels, to achieve the desired result, namely the creation of a material in "beads" having a high cohesion and without any risk of tearing.

Ce nouveau concept, complètement à l'opposé de celui des machines classiques, permet d'utiliser dans la machine selon l'invention des qualités de papiers moins coûteuses que le Kraft, et essentiellement le papier recyclé de bas de gamme, ce qui n'est pas possible dans les machines classiques telles que rappelées ci-dessus.This new concept, completely opposite to that of conventional machines, makes it possible to use in the machine according to the invention qualities of paper which are less expensive than Kraft, and essentially low-end recycled paper, which does not is not possible in conventional machines as recalled above.

L'invention vise également divers aménagements améliorant entre autres le fonctionnement du système décrit ci-dessus.The invention also relates to various arrangements improving inter alia the operation of the system described above.

Ainsi, alors qu'il est connu, dans les machines antérieures, de monter les couples d'engrenages servant simultanément à l'entraînement et à l'assemblage avec des moyens élastiques permettant d'en régler la pression mutuelle, l'invention apporte une modification importante à ce type de moyens.Thus, while it is known, in prior machines, to mount the pairs of gears used simultaneously for driving and for assembly with elastic means making it possible to adjust mutual pressure, the invention provides a important modification to this type of means.

En effet, du fait que l'entraînement n'est assuré que par les roues arrière, tandis que les roues d'assemblage n'ont pas à exercer une pression importante, il est prévu de monter les axes des roues inférieures sur un palonnier basculant soumis à l'action de ressorts communs répartis de telle manière que l'action de ces ressorts soit plus importante à l'arrière (pour l'entraînement) qu'à l'avant (pour l'assemblage). Dans la pratique, l'ensemble mécanique, qui représente l'essentiel de l'invention, est monté dans un berceau, dans lequel les axes supérieurs sont fixes, ainsi que le train réducteur qui les réunit, tandis que les axes inférieurs sont répartis sur un palonnier basculant d'avant en arrière et soumis à un couple de ressorts communs exerçant leur effet en un point dudit palonnier situé entre l'arrière et l'avant à environ 1/3 de l'extrémité arrière.In fact, since the drive is only provided by the rear wheels, while the assembly wheels do not have to exert significant pressure, provision is made to mount the axes of the lower wheels on a tilting lifter. subjected to the action of common springs distributed in such a way that the action of these springs is greater at the rear (for driving) than at the front (for assembly). In practice, the mechanical assembly, which represents the essence of the invention, is mounted in a cradle, in which the upper axes are fixed, as well as the reduction gear which joins them together, while the lower axes are distributed over a spreader tilting back and forth and subjected to a couple of common springs exerting their effect at a point of said spreader located between the rear and the front about 1/3 of the rear end.

Enfin, l'invention vise un agencement simplifié pour l'alimentation en papier, garantissant un volume optimum du matériau soumis audit ensemble mécanique, et qui sera décrit ci-après.Finally, the invention relates to a simplified arrangement for feeding paper, guaranteeing an optimum volume of the material subjected to said mechanical assembly, and which will be described below.

L'invention vise également un procédé pour la fabrication de matériaux de calage / rembourrage, du type général dans lequel un empilement de feuilles de papier superposées, après repli ou enroulement de ses bords longitudinaux, est soumis à une action d'entraînement, une action de froissage sensiblement transversal et une action de compression en des emplacements successifs pour en assurer la cohésion, la caractéristique essentielle de ce procédé résidant dans le fait que lesdites actions sont exercées successivement et indépendamment l'une de l'autre. Selon une réalisation préférée de ce procédé, l'action de froissage résulte d'un freinage exercé sur le matériau en aval de l'action d'entraînement, sans l'intervention de moyens agissant directement sur le matériau.The invention also relates to a method for the manufacture of cushioning / padding materials, of the general type in which a stack of overlapping sheets of paper, after folding or winding of its longitudinal edges, is subjected to a driving action, an action substantially transverse creasing and a compression action in successive locations to ensure cohesion, the essential characteristic of this process residing in the fact that said actions are exercised successively and independently of one another. According to a preferred embodiment of this method, the crumpling action results from braking exerted on the material downstream of the drive action, without the intervention of means acting directly on the material.

Enfin, l'invention vise le nouveau matériau de calage / rembourrage obtenu par ce procédé et / ou cette machine, ce matériau présentant le volume voulu grâce au froissage et la cohésion voulue grâce à l'assemblage par compression, mais sans zones affaiblies, ce qui permet de le fabriquer notamment à partir de papier recyclé de bas de gamme.Finally, the invention relates to the new cushioning / padding material obtained by this process and / or this machine, this material having the desired volume thanks to the crumpling and the desired cohesion thanks to the compression assembly, but without weakened zones, this which allows it to be produced in particular from low-end recycled paper.

L'invention va être décrite maintenant plus en détail avec référence au dessin annexé, sur lequel :

  • La figure 1 est une vue de dessus de l'appareil selon l'invention, avec les feuilles de papier en place.
  • La figure 2 est une coupe verticale par le plan de symétrie longitudinal de l'appareil (II-II sur la figure 1).
  • La figure 3 est une coupe verticale transversale par l'axe des roues d'entraînement, suivant III-III de la figure 2.
  • La figure 4 est une coupe verticale transversale par l'axe des roues d'assemblage, suivant IV-IV de la figure 2.
  • La figure 5 est une vue partielle en perspective du berceau dans lequel est monté l'ensemble mécanique, vue par dessous, les roues supérieures étant enlevées.
The invention will now be described in more detail with reference to the attached drawing, in which:
  • Figure 1 is a top view of the apparatus according to the invention, with the sheets of paper in place.
  • Figure 2 is a vertical section through the longitudinal plane of symmetry of the device (II-II in Figure 1).
  • FIG. 3 is a vertical cross section through the axis of the drive wheels, along III-III of FIG. 2.
  • FIG. 4 is a vertical cross section through the axis of the assembly wheels, along IV-IV of FIG. 2.
  • Figure 5 is a partial perspective view of the cradle in which is mounted the mechanical assembly, seen from below, the upper wheels being removed.

Sur ce dessin, on retrouve les éléments usuels d'une machine de fabrication de matériau de calage / rembourrage à partir d'un empilement de feuilles de papier, à savoir, essentiellement, portés par un bâti 1, au moins une bobine 2 de feuilles de papier superposées, une trémie 3 en forme de tronc de pyramide horizontale orientée vers l'avant, des organes d'entraînement, de froissage et de compression réunis dans un berceau 4 et entraînés par un moteur 5, un système de coupe 6 et une goulotte d'extraction par l'avant 7.In this drawing, we find the usual elements of a machine for manufacturing cushioning / padding material from a stack of sheets of paper, namely, essentially, carried by a frame 1, at least one coil 2 of sheets of superimposed paper, a hopper 3 in the shape of a horizontal pyramid trunk facing forward, drive, crumpling and compression members assembled in a cradle 4 and driven by a motor 5, a cutting system 6 and a extraction chute from the front 7.

L'invention réside essentiellement dans la conception et la réalisation de l'ensemble mécanique réuni dans le berceau 4, et dont les divers éléments et leur agencement sont représentés aux figures 3-5.The invention essentially resides in the design and production of the mechanical assembly assembled in the cradle 4, the various elements and their arrangement of which are shown in FIGS. 3-5.

Cet ensemble comprend un premier couple de roues superposées (figure 3), à savoir une roue supérieure ou roue d'entraînement 8 tournant sur un axe 9 monté dans les flasques latéraux 10-10' du berceau 4, et une roue inférieure d'appui 11, tournant sur un axe 12 porté par un palonnier 13, monté élastiquement basculant par rapport au berceau 4 comme il apparaît à la figure 5, et sera décrit plus loin plus en détail.This assembly comprises a first pair of superimposed wheels (FIG. 3), namely an upper wheel or drive wheel 8 rotating on an axle 9 mounted in the lateral flanges 10-10 ′ of the cradle 4, and a lower support wheel 11, rotating on an axis 12 carried by a lifting beam 13, mounted resiliently tilting relative to the cradle 4 as it appears in Figure 5, and will be described later in more detail.

Le même ensemble mécanique comprend un second couple de roues superposées (figure 4), à savoir une roue supérieure ou roue de compression 14, tournant sur un axe 15 monté dans les flasques latéraux 10, 10' et entraînée en rotation par le moteur 5, et une roue inférieure d'appui 17, tournant sur un axe 18 porté également par le palonnier 13 monté basculant élastiquement par rapport au berceau 4.The same mechanical assembly comprises a second pair of superimposed wheels (FIG. 4), namely an upper wheel or compression wheel 14, rotating on an axis 15 mounted in the lateral flanges 10, 10 'and driven in rotation by the motor 5, and a lower bearing wheel 17, rotating on an axle 18 also carried by the lifter 13 mounted resiliently tilting relative to the cradle 4.

Dans la réalisation présentée, les deux axes 9 et 15 sont entraînés positivement par le moteur 5, à savoir l'axe 15 directement et l'axe 9 par l'intermédiaire d'un train d'engrenages réducteur schématisé en 16a, 16b, 16c entre les figures 3 et 4.In the embodiment presented, the two axes 9 and 15 are positively driven by the motor 5, namely the axis 15 directly and the axis 9 via a reducing gear train shown diagrammatically in 16 a , 16 b , 16 c between Figures 3 and 4.

La constitution et les fonctions de ces deux couples de roues sont les suivantes:The constitution and functions of these two pairs of wheels are as follows:

Comme représenté sur la figure 3, la roue d'entraînement 8 est d'allure générale cylindrique, avec une portion centrale 19 en forme de gouttière torique à section sensiblement semi-circulaire, et deux portions d'extrémité 20, 20', présentant chacune une périphérie cylindrique interrompue à intervalles réguliers par des méplats 21, avec la particularité que les méplats 21 de la portion 20 font face à des zones cylindriques 22' de la portion 20', tandis qu'inversement les méplats 21' de la portion 20' font face à des zones cylindriques 22 de la portion 20.As shown in FIG. 3, the drive wheel 8 has a generally cylindrical appearance, with a central portion 19 in the form of a toric gutter with a substantially semi-circular section, and two end portions 20, 20 ′, each having a cylindrical periphery interrupted at regular intervals by flats 21, with the particularity that the flats 21 of the portion 20 face cylindrical zones 22 'of the portion 20', while conversely the flats 21 'of the portion 20' face cylindrical zones 22 of the portion 20.

Par ailleurs, la roue d'appui 11 avec laquelle coopère la roue d'entraînement 8 se présente sous une forme d'allure générale cylindrique mais comportant dans sa portion médiane un bourrelet torique 23, dont la section en relief correspond sensiblement à la section en creux de la gouttière torique de la roue 8.Furthermore, the support wheel 11 with which the drive wheel 8 cooperates is in the form of a generally cylindrical shape but comprising in its median portion a toroidal bead 23, the cross section of which corresponds substantially to the cross section wheel trough 8.

Le matériau M sortant de la trémie 3, et consistant dans un empilement de feuilles de papier repliées sur elles-mêmes, passe entre les roues 8 et 11, et est entraîné vers l'avant par la roue d'entraînement 8, mais avec les particularités suivantes : Comme représenté à la figure 3, ladite bande de matériau M va être pincée avec une force variable, comme expliqué plus loin, sur la roue d'appui 11, au passage des zones cylindriques 22, 22' des portions 20, 20', mais demeurera libre au passage des méplats 21, 21'. En raison du décalage entre les méplats des deux portions 20, 20', la bande M va donc être entraînée alternativement de chaque côté de son axe longitudinal, au lieu d'être tirée uniquement axialement avec les efforts générateurs de déchirure qui en résulteraient. Cet avancement par à-coups successifs d'un côté à l'autre permet d'avoir au centre un surplus de papier par rapport à sa configuration plane, ce surplus étant généré par le bourrelet 23 s'enfonçant dans la gouttière 19, ce qui permettra un froissage amélioré.The material M emerging from the hopper 3, and consisting of a stack of sheets of paper folded over on themselves, passes between the wheels 8 and 11, and is driven forward by the drive wheel 8, but with the following features: As shown in FIG. 3, said strip of material M will be pinched with a variable force, as explained below, on the support wheel 11, as the cylindrical zones 22, 22 'of the portions 20, 20 pass ', but will remain free at the passage of the flats 21, 21'. Due to the offset between the flats of the two portions 20, 20 ′, the strip M will therefore be driven alternately on each side of its longitudinal axis, instead of being pulled only axially with the tear-generating forces which would result therefrom. This advancement in successive bursts of a side to side allows to have in the center a surplus of paper compared to its planar configuration, this surplus being generated by the bead 23 sinking into the gutter 19, which will allow improved crumpling.

Ce mode d'entraînement de la bande de matériau M est original en soi et fait partie de l'invention.This mode of driving the strip of material M is original in itself and forms part of the invention.

Si l'on se réfère maintenant à la figure 4, la roue de compression 14 est d'allure générale cylindrique et comporte deux portions d'extrémités crénelées 24, 24' réunies par une portion médiane neutre 25 ; par ailleurs, la roue d'appui 17 est un cylindre lisse sur lequel vont rouler les cannelures 24, 24', le matériau en bande M, venant du premier couple de roues 8-11 étant serré entre lesdites dents et cette surface lisse, avec une force variable, comme expliqué plus loin. Cette compression est cependant limitée et ne saurait endommager ledit matériau, puisque ce dernier n'est pas déformé entre des dents d'engrenages engrenant entre elles comme dans les systèmes antérieurs. L'action des cannelures 24, 24' sur le matériau est donc d'assurer par cette simple compression, l'assemblage des feuilles dudit matériau et la cohésion de cet assemblage, par écrasement des plis du papier.Referring now to FIG. 4, the compression wheel 14 has a generally cylindrical appearance and comprises two portions of crenellated ends 24, 24 ′ joined by a neutral central portion 25; moreover, the support wheel 17 is a smooth cylinder on which the grooves 24, 24 ′ will roll, the strip material M, coming from the first pair of wheels 8-11 being clamped between said teeth and this smooth surface, with a variable force, as explained below. This compression is however limited and cannot damage said material, since the latter is not deformed between gear teeth meshing with one another as in previous systems. The action of the grooves 24, 24 'on the material is therefore to ensure by this simple compression, the assembly of the sheets of said material and the cohesion of this assembly, by crushing the folds of the paper.

Une particularité essentielle de ce second couple de roues est de n'exercer que cette fonction d'assemblage, sans contribuer à l'avancement du produit (au contraire, il le freine).An essential characteristic of this second pair of wheels is to exercise only this assembly function, without contributing to the advancement of the product (on the contrary, it slows it down).

Pour cette raison, la force avec laquelle les roues d'appui de chaque couple, à savoir respectivement la roue 11 et la roue 17 sont soumises, selon l'invention, à l'action de ressorts 26, 26' les appuyant sur les roues supérieures 8 et 14, mais suivant un rapport de forces différent. A cet effet, comme représenté sur la figure 5, le palonnier 13, 13' portant les axes 12, 18 des roues 11, 17 est soumis à l'action de ces ressorts 26, 26' en un point 27, 27' de sa longueur situé plus près de l'arrière, c'est-à-dire de l'axe 12, que de l'avant, c'est-à-dire de l'axe 18. La force exercée par les ressorts 26, 26' est donc répartie de manière telle que la pression exercée par la roue 11 est plus importante que celle exercée par la roue 17. Cette différence de forces est justifiée par le fait que la roue 11 coopère avec la roue d'entraînement 8, donc doit pincer proportionnellement davantage le matériau M, que la roue 17, qui ne sert que d'appui pour les dents d'assemblage 24, 24'.For this reason, the force with which the support wheels of each pair, namely respectively the wheel 11 and the wheel 17 are subjected, according to the invention, to the action of springs 26, 26 'pressing them on the wheels superior 8 and 14, but according to a different balance of power. To this end, as shown in FIG. 5, the lifter 13, 13 'carrying the axes 12, 18 of the wheels 11, 17 is subjected to the action of these springs 26, 26' at a point 27, 27 'of its length located closer to the rear, that is to say the axis 12, than to the front, that is to say the axis 18. The force exerted by the springs 26, 26 'is therefore distributed in such a way that the pressure exerted by the wheel 11 is greater than that exerted by the wheel 17. This difference in forces is justified by the fact that the wheel 11 cooperates with the drive wheel 8, therefore must pinch the material M proportionally more than the wheel 17, which only serves as a support for the assembly teeth 24, 24 '.

De préférence le rapport de forces peut être de 1/3-2/3, mais on peut le choisir différent si on le désire, en modifiant les points d'application 27, 27'. Pour mieux assurer le guidage de l'axe 18, ses extrémités peuvent traverser des lumières verticales 34, 34' des flasques 10, 10' du berceau 4.Preferably the power ratio can be 1 / 3-2 / 3, but it can be chosen different if desired, by modifying the application points 27, 27 '. To better ensure the guiding of the axis 18, its ends can pass through vertical slots 34, 34 'of the flanges 10, 10' of the cradle 4.

Cette fonction d'assemblage et son mode d'ajustement en liaison avec la fonction d'entraînement sont également originaux et font partie de l'invention.This assembly function and its adjustment mode in conjunction with the drive function are also original and form part of the invention.

Enfin, selon une caractéristique essentielle de l'invention, la fonction froissement n'est pas remplie par des systèmes d'engrenages comme dans les systèmes antérieurs, avec les inconvénients en résultant, mais par un phénomène purement mécanique n'affectant pas la solidité du matériau.Finally, according to an essential characteristic of the invention, the crumpling function is not fulfilled by gear systems as in the previous systems, with the resulting drawbacks, but by a purely mechanical phenomenon which does not affect the solidity of the material.

A cet effet, comme le suggère symboliquement la représentation schématique de pignons 16a, 16b, 16c formant un train réducteur entre les figures 3 et 4, le moteur 5, entraînant la roue 14, entraîne également la roue 8, dans le même sens, mais à plus grande vitesse. Il en résulte que la bande de matériau M quittant le couple de roues 8-11 va être repris à une vitesse plus faible par le couple de roues 14-17. Par conséquent, le matériau va se tasser entre ces deux couples de roues, en créant en permanence une série de plis transversaux, désignés par P sur la figure 2. La fonction de froissement du matériau M est donc remplie par cette différence de vitesse de rotation des deux couples de roues, le couple d'entraînement tournant plus vite que le couple d'assemblage. L'expérience a montré qu'un rapport de vitesses de l'ordre de 1,9 conduisait aux meilleurs résultats. Cela peut s'obtenir par exemple avec des pignons 16a et 16b de 20 dents et un pignon 16c de 38 dents, étant entendu que le pignon 16b n'a d'autre rôle que d'assurer au pignon 16c, donc à la roue 14 le même sens de rotation que le pignon 16a, c'est-à-dire la roue 8.To this end, as symbolically suggested by the schematic representation of pinions 16 a , 16 b , 16 c forming a reduction gear between Figures 3 and 4, the motor 5, driving the wheel 14, also drives the wheel 8, in the same sense, but at higher speed. As a result, the strip of material M leaving the pair of wheels 8-11 will be taken up at a lower speed by the pair of wheels 14-17. Consequently, the material will settle between these two pairs of wheels, permanently creating a series of transverse folds, designated by P in FIG. 2. The crumpling function of the material M is therefore fulfilled by this difference in rotational speed of the two pairs of wheels, the drive torque rotating faster than the assembly torque. Experience has shown that a gear ratio of the order of 1.9 leads to the best results. This can be obtained for example with pinions 16 a and 16 b of 20 teeth and a pinion 16 c of 38 teeth, it being understood that the pinion 16 b has no other role than to ensure the pinion 16 c , therefore to the wheel 14 the same direction of rotation as the pinion 16 a , that is to say the wheel 8.

Bien entendu, le rapport 1,9 est considéré comme préféré, mais pourrait être différent, selon les circonstances, par exemple le degré de froissement désiré. De même, ce rapport est valable pour des roues 8 et 14 de même diamètre, mais il pourrait être différent pour des roues de diamètres différents.Of course, the ratio 1.9 is considered to be preferred, but could be different, depending on the circumstances, for example the degree of wrinkling desired. Likewise, this ratio is valid for wheels 8 and 14 of the same diameter, but it could be different for wheels of different diameters.

L'avantage majeur de cette caractéristique est que, contrairement aux appareils antérieurs, le froissement du matériau M est obtenu "spontanément", sans l'intervention d'aucun organe susceptible d'endommager le matériau, par exemple des roues dentées, telles que par exemple celles mentionnées au document EU-A-2 427 834, qui occasionnent des amorces de déchirures qui imposent une restriction de l'application de tels appareils à des papiers très résistants. Au contraire, grâce à cette caractéristique, on peut utiliser dans l'appareil selon l'invention du papier de qualité courante, tel que du papier recyclé de bas de gamme.The major advantage of this characteristic is that, unlike previous devices, the crumpling of the material M is obtained "spontaneously", without the intervention of any member capable of damaging the material, for example toothed wheels, such as by example those mentioned in document EU-A-2 427 834, which give rise to tears which impose a restriction on the application of such devices to very resistant papers. On the contrary, thanks to this characteristic, one can use in the device according to the invention of current quality paper, such as low-end recycled paper.

Enfin, comme illustré notamment par la coupe de la figure 2, l'invention prévoit de créer le matériau M à partir du papier de la bobine 2 grâce à un système de guidage assurant le repli des bords longitudinaux de façon simple et efficace.Finally, as illustrated in particular by the section in FIG. 2, the invention provides for creating the material M from the paper of the reel 2 by means of a guide system ensuring the folding of the longitudinal edges in a simple and effective manner.

Ce système comprend, en premier lieu, un couple de poulies à flasques 30, par exemple en caoutchouc, montées réglables et tournantes sur un axe 31, basculant autour de deux bras pivotant en 32 dans le sens de la flèche F (figure 2) de manière à dégager l'entrée de la trémie 3 pour faciliter le chargement du papier en provenance de la bobine 2 dans la machine. Dans cette position, les poulies 30 sont réglées axialement à tout écartement voulu, par exemple en 30' afin de s'adapter aux besoins des différentes qualités de papier, qui peuvent ou doivent être rabattues suivant des rayons de courbure différents dans la trémie 3.This system comprises, firstly, a pair of flanged pulleys 30, for example of rubber, mounted adjustable and rotating on an axis 31, tilting around two arms pivoting at 32 in the direction of the arrow F (FIG. 2) of so as to clear the inlet of the hopper 3 to facilitate the loading of paper from the reel 2 into the machine. In this position, the pulleys 30 are adjusted axially to any desired spacing, for example at 30 'in order to adapt to the needs of the different qualities of paper, which can or must be folded down according to different radii of curvature in the hopper 3.

Lorsque le papier est engagé dans la trémie 3, on relève l'ensemble 30-31 en le faisant basculer autour de 32 dans le sens opposé à la flèche F, jusqu'à la position verticale (figure 2). Dans cette position, les flasques 30 aident à rabattre les bords latéraux de la superposition de feuilles afin qu'ils s'enroulent autour d'une plaque 33 montée à l'intérieur de la trémie 3. A la sortie de la trémie 3, la superposition de feuilles est complètement enroulée sur elle-même et autour de ladite plaque 33, en constituant un matériau M, qui est alors repris par le couple d'entraînement 8/11 dans le berceau 4.When the paper is engaged in the hopper 3, the assembly 30-31 is raised by tilting it around 32 in the direction opposite to the arrow F, to the vertical position (FIG. 2). In this position, the flanges 30 help to fold the side edges of the overlapping sheets so that they wrap around a plate 33 mounted inside the hopper 3. At the exit of the hopper 3, the superposition of sheets is completely wound on itself and around said plate 33, constituting a material M, which is then taken up by the drive torque 8/11 in the cradle 4.

Le dessous de la trémie 3 se compose de deux tôles 40, 40', découpées obliquement de manière à guider l'entrée des bords longitudinaux en cours de repliement des feuilles constituant le matériau M soumis à l'entraînement, au froissement et à l'assemblage.The underside of the hopper 3 consists of two sheets 40, 40 ′, cut obliquely so as to guide the entry of the longitudinal edges during the folding of the sheets constituting the material M subjected to entrainment, crumpling and assembly.

Les plaques supérieures et inférieures de la trémie sont prolongées en 41 et 42, de chaque côté des couples de roues 8/11 et 14/17, pour assurer le guidage du matériau M jusqu'au système de coupe 6.The upper and lower plates of the hopper are extended at 41 and 42, on each side of the wheel pairs 8/11 and 14/17, to guide the material M to the cutting system 6.

L'avant de la plaque 33 se termine par une retombée arrondie 35, qui sert à accueillir la feuille M sur sa partie supérieure. La portion arrière de la plaque 33 comporte des rebords verticaux triangulaires 36, qui redonnent du volume aux bords du matelas formé par le repliage de la feuille M provoqué par la trémie 3.The front of the plate 33 ends in a rounded drop 35, which serves to accommodate the sheet M on its upper part. The rear portion of the plate 33 has triangular vertical edges 36, which restore volume to the edges of the mattress formed by the folding of the sheet M caused by the hopper 3.

On notera que sur le bord arrière de la cloison supérieure de la trémie 3 est fixé un ressort 40 servant à maintenir et appuyer les flasques 30 contre ladite retombée arrondie 35 pendant le fonctionnement de la machine.It will be noted that on the rear edge of the upper partition of the hopper 3 is fixed a spring 40 serving to hold and press the flanges 30 against said rounded drop 35 during the operation of the machine.

Ce système élimine toutes les constructions compliquées qui équipent les machines antérieures, et à ce titre, fait partie de l'invention.This system eliminates all the complicated constructions which equip prior machines, and as such is part of the invention.

Il est bien entendu que chacune des étapes caractéristiques du procédé selon l'invention est originale en elle-même et revendique indépendamment comme telle, mais que les meilleurs résultats de l'invention sont obtenus par la combinaison de ces étapes deux à deux ou toutes entre elles et que la présente invention englobe donc également toutes ces combinaisons.It is understood that each of the characteristic steps of the method according to the invention is original in itself and claims independently as such, but that the best results of the invention are obtained by the combination of these steps two by two or all between and that the present invention therefore also encompasses all these combinations.

Il en est de même pour les divers organes caractéristiques de la machine, qui sont revendiqués aussi bien indépendamment qu'en toute combinaison, les meilleurs résultats étant obtenus par la combinaison de tous ces organes.It is the same for the various characteristic organs of the machine, which are claimed both independently and in any combination, the best results being obtained by the combination of all these organs.

L'invention vise enfin également toutes les étapes équivalentes ou tous les organes équivalents à ceux qui viennent d'être décrits à titre d'exemple.The invention finally also relates to all the equivalent stages or all the bodies equivalent to those which have just been described by way of example.

Claims (14)

Procédé pour la fabrication d'un matériau de calage / rembourrage à partir d'une superposition de feuilles de papier, par repli longitudinal de ces feuilles sur elles-mêmes, entraînement de l'ensemble replié, froissage de l'ensemble et assemblage de l'ensemble froissé par des compressions ponctuelles successives, caractérisé en ce que les opération de repli, d'entraînement, de froissage et d'assemblage sont exécutées séparément en des postes successifs indépendants les uns des autres.Method for manufacturing a cushioning / padding material from a superposition of sheets of paper, by longitudinally folding these sheets onto themselves, driving the folded assembly, creasing the assembly and assembling the 'crumpled by successive point compressions, characterized in that the operations of folding, driving, creasing and assembly are performed separately in successive positions independent of each other. Procédé selon la revendication 1, caractérisé en ce que l'opération de froissage résulte spontanément d'une différence de vitesse entre la vitesse d'entraînement et la vitesse d'assemblage.Method according to claim 1, characterized in that the creasing operation results spontaneously from a speed difference between the drive speed and the assembly speed. Procédé selon les revendications 1 et 2, caractérisé en ce que l'opération d'entraînement est exécutée sur deux zones parallèles de chaque côté de l'axe de l'ensemble des feuilles après repliage, en des points successifs alternés d'un côté et de l'autre, la zone axiale du matériau demeurant relativement souple.Method according to Claims 1 and 2, characterized in that the driving operation is carried out on two parallel zones on each side of the axis of the assembly of the sheets after folding, at successive alternating points on one side and on the other, the axial zone of the material remaining relatively flexible. Machine pour la fabrication d'un matériau de calage / rembourrage conformément à l'une quelconque des revendications 1 à 3, caractérisée en ce que les moyens remplissant les fonctions de pliage, d'entraînement, de froissage et d'assemblage assurant la cohésion du matériau fini constituent des organes indépendants agissant séparément et dont chacun est adapté à sa fonction propre de manière à éliminer tout risque d'endommager le matériau ou de provoquer sa déchirure.Machine for manufacturing a cushioning / padding material according to any one of claims 1 to 3, characterized in that the means fulfilling the functions of folding, driving, creasing and assembly ensuring the cohesion of the finished material constitute independent organs acting separately and each of which is adapted to its own function so as to eliminate any risk of damaging the material or of causing it to tear. Machine selon la revendication 4, caractérisée en ce que les organes remplissant la fonction d'entraînement consistent en un couple de roues superposées à savoir d'une part une roue supérieure dite d'entraînement ayant l'aspect général d'un cylindre dont la portion médiane a une section en forme de gouttière torique et les portions d'extrémités sont moletées, mais comportent des méplats répartis sur leur périphérie de telle manière que les zones de méplats de l'une des portions d'extrémités soient en face des zones sans méplats de l'autre portion d'extrémité, et d'autre part une roue inférieure dite d'appui ayant l'aspect général d'un cylindre dont la portion médiane a une section en forme de bourrelet torique correspondant sensiblement à la gouttière torique de la roue supérieure, et les portions d'extrémités sont des cylindres sur lesquels roulent les zones sans méplats de la roue supérieure.Machine according to claim 4, characterized in that the members fulfilling the drive function consist of a pair of superposed wheels, namely on the one hand an upper wheel called the drive having the general appearance of a cylinder whose portion median has a cross section in the shape of a torus gutter and the end portions are knurled, but have flats distributed over their periphery in such a way that the areas of flats of one of the end portions are opposite the areas without flats on the other end portion, and on the other hand a so-called lower support wheel having the general appearance of a cylinder, the middle portion of which has a cross-section in the shape of an O-ring corresponding substantially to the O-ring of the upper wheel, and the end portions are cylinders on which roll the flat areas of the upper wheel. Machine selon l'une des revendications 4 ou 5, caractérisée en ce que les organes assurant la fonction d'assemblage des épaisseurs superposées et repliées de papier consistent en un couple de roues superposées, à savoir une roue supérieure crénelée et un cylindre inférieur lisse sur lequel roule la périphérie desdites dents, l'empilement de feuilles de papier subissant une certaine compression de la part de ces dents contre le cylindre d'appui.Machine according to one of claims 4 or 5, characterized in that the members ensuring the function of assembling the superimposed and folded thicknesses of paper consist of a pair of superimposed wheels, namely a crenellated upper wheel and a smooth lower cylinder on which rolls the periphery of said teeth, the stack of sheets of paper undergoing a certain compression on the part of these teeth against the support cylinder. Machine selon l'une quelconque des revendications 4 à 6, caractérisée en ce que les moyens assurant la fonction froissage consistent en un train d'engrenages réducteurs reliant les roues d'entraînement (situées à l'arrière) et les roues d'assemblage (situées à l'avant) de telle manière que les roues d'entraînement tournent sensiblement plus vite que les roues d'assemblage, de telle sorte que grâce à cette différence de vitesse, le matériau alimente les roues d'assemblage plus vite qu'elles ne tournent et se tasse en se froissant spontanément sans subir aucune contrainte.Machine according to any one of Claims 4 to 6, characterized in that the means ensuring the crumpling function consist of a train of reducing gears connecting the drive wheels (located at the rear) and the assembly wheels ( located at the front) in such a way that the drive wheels turn substantially faster than the assembly wheels, so that thanks to this difference in speed, the material feeds the assembly wheels faster than they do not rotate and settle while crumpling spontaneously without being subjected to any constraint. Machine selon la revendication 7, caractérisée en ce que, la roue d'entraînement et la roue d'assemblage ayant sensiblement le même diamètre, la roue d'entraînement tourne environ 1,9 fois plus vite que la roue d'assemblage.Machine according to claim 7, characterized in that, the drive wheel and the assembly wheel having substantially the same diameter, the drive wheel rotates approximately 1.9 times faster than the assembly wheel. Machine selon la revendication 8, caractérisée en ce que les axes des roues inférieures sont montées pivotantes sur un palonnier basculant soumis à l'action de ressorts communs répartis de telle manière que l'action de ces ressorts soit plus importante à l'arrière, c'est-à-dire sur les roues d'entraînement qu'à l'avant, c'est-à-dire sur les roues d'assemblage.Machine according to claim 8, characterized in that the axes of the lower wheels are pivotally mounted on a tilting spreader subjected to the action of common springs distributed in such a way that the action of these springs is greater at the rear, c '' on the drive wheels at the front, that is to say on the assembly wheels. Machine selon la revendication 9, caractérisée en ce que les ressorts agissant sur le palonnier sont placés vers le premier tiers de la longueur du palonnier en partant de l'arrière.Machine according to claim 9, characterized in that the springs acting on the lifter are placed towards the first third of the length of the lifter from the rear. Machine selon l'une quelconque des revendications 4 à 10, caractérisée en ce que le système de guidage du papier depuis la bobine de stockage comprend en premier lieu un couple de poulies à flasques montées coulissantes et pivotantes sur un arbre porté par des bras basculants entre une position arrière, dégageant l'ouverture de la trémie en vue de son chargement initial et une seconde position relevée dans laquelle lesdites poulies à flasques rabattent les bords du papier afin de le guider dans ladite trémie, et en second lieu une plaque sensiblement horizontale placée dans cette trémie et la dépassant à l'avant et à l'arrière, et autour de laquelle s'enroule le papier, à mesure de son cheminement vers la sortie de la trémie.Machine according to any one of Claims 4 to 10, characterized in that the system for guiding the paper from the storage reel comprises first of all a pair of flanged pulleys mounted sliding and pivoting on a shaft carried by rocking arms between a rear position, clearing the opening of the hopper for initial loading and a second raised position in which said flanged pulleys fold the edges of the paper in order to guide it in said hopper, and secondly a substantially horizontal plate placed in this hopper and beyond it at the front and at the rear, and around which the paper is wound, as it travels towards the exit of the hopper. Matériau de calage / rembourrage fabriqué à partir d'un empilement de feuilles de papier, par pliage, froissage et assemblage par points de compression, caractérisé en ce qu'il résulte de la mise en oeuvre du procédé selon les revendications 1 à 3 et / ou de la machine selon les revendications 4 à 11.Rigging / padding material made from a stack of sheets of paper, by folding, creasing and assembly by compression points, characterized in that it results from the implementation of the method according to claims 1 to 3 and / or the machine according to claims 4 to 11. Matériau de calage / rembourrage selon la revendication 12, caractérisé en ce que le papier utilisé est du papier recyclé.Lining / padding material according to claim 12, characterized in that the paper used is recycled paper. Matériau selon l'une quelconque des revendications 11 à 13, caractérisé en ce qu'il ne comporte aucune perforation ou amorce de déchirure.Material according to any one of claims 11 to 13, characterized in that it does not comprise any perforation or initiation of tearing.
EP94440027A 1994-04-22 1994-04-22 Method and apparatus for making dunnage by crumpling paper Expired - Lifetime EP0679504B1 (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
ES94440027T ES2093502T3 (en) 1994-04-22 1994-04-22 PROCEDURE AND MACHINE FOR THE MANUFACTURE OF FILLING MATERIALS BY WRINKLING PAPER.
EP94440027A EP0679504B1 (en) 1994-04-22 1994-04-22 Method and apparatus for making dunnage by crumpling paper
DK94440027.4T DK0679504T3 (en) 1994-04-22 1994-04-22 Method and machine for making filler material by wrinkling paper
DE69400576T DE69400576T2 (en) 1994-04-22 1994-04-22 Method and device for producing filler material by crumpling paper
AT94440027T ATE142941T1 (en) 1994-04-22 1994-04-22 METHOD AND DEVICE FOR PRODUCING FILLING MATERIAL BY CRUSHING PAPER
PL95317835A PL180881B1 (en) 1994-04-22 1995-04-05 Improvement in processes and equipment for obtaining padding materials by squeezing paper
BR9507491A BR9507491A (en) 1994-04-22 1995-04-05 Process for the manufacture of a paving / filling material from a superposition of sheets of paper machine for the manufacture of paving / filling material and paving / filling material
PCT/EP1995/001238 WO1995029055A1 (en) 1994-04-22 1995-04-05 Improvements to methods and machines for making packing materials by crumpling paper
CN95192668A CN1105011C (en) 1994-04-22 1995-04-05 Improvements to methods and machines for making packing materials by crumpling paper
RU96122524A RU2127665C1 (en) 1994-04-22 1995-04-05 Lining or sealing material manufacture method and apparatus and material produced by such method
NZ283746A NZ283746A (en) 1994-04-22 1995-04-05 Packing material: folded paper web crumpled and pressure assembled in separate folding and assembling stages
JP7527307A JPH10505288A (en) 1994-04-22 1995-04-05 Improvement of manufacturing method and manufacturing machine of material to fill paper with wrinkle
AU22157/95A AU703893B2 (en) 1994-04-22 1995-04-05 Improvements to machines and methods for manufacturing packing materials by crumpling paper
CZ19963085A CZ9603085A3 (en) 1994-04-22 1995-04-05 Improvements to methods and machines for making lining or packing materials by crumpling paper and product obtained thereby
HU9602870A HUT76120A (en) 1994-04-22 1995-04-05 Machine and method for making crumpled paper stuff material
CA002187806A CA2187806C (en) 1994-04-22 1995-04-05 Improvements to methods and machines for making packing materials by crumpling paper
US08/426,468 US6106452A (en) 1994-04-22 1995-04-19 Machines and methods for making cushioning dunnage products by crumping paper
NO964466A NO964466D0 (en) 1994-04-22 1996-10-21 Process and machine for producing curly paper filler material
MXPA/A/1996/005025A MXPA96005025A (en) 1994-04-22 1996-10-22 Improvements to machines and methods to manufacture packaging products through corrugated pa
BG100971A BG61868B1 (en) 1994-04-22 1996-11-11 Method and machine for the manufacture of packaging materials by paper folding
GR960403501T GR3022063T3 (en) 1994-04-22 1996-12-17 Method and apparatus for making dunnage by crumpling paper.

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EP94440027A EP0679504B1 (en) 1994-04-22 1994-04-22 Method and apparatus for making dunnage by crumpling paper

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EP0679504A1 true EP0679504A1 (en) 1995-11-02
EP0679504B1 EP0679504B1 (en) 1996-09-18

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EP94440027A Expired - Lifetime EP0679504B1 (en) 1994-04-22 1994-04-22 Method and apparatus for making dunnage by crumpling paper

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US (1) US6106452A (en)
EP (1) EP0679504B1 (en)
JP (1) JPH10505288A (en)
CN (1) CN1105011C (en)
AT (1) ATE142941T1 (en)
AU (1) AU703893B2 (en)
BG (1) BG61868B1 (en)
BR (1) BR9507491A (en)
CA (1) CA2187806C (en)
CZ (1) CZ9603085A3 (en)
DE (1) DE69400576T2 (en)
DK (1) DK0679504T3 (en)
ES (1) ES2093502T3 (en)
GR (1) GR3022063T3 (en)
HU (1) HUT76120A (en)
NO (1) NO964466D0 (en)
NZ (1) NZ283746A (en)
PL (1) PL180881B1 (en)
RU (1) RU2127665C1 (en)
WO (1) WO1995029055A1 (en)

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AU703893B2 (en) 1999-04-01
DK0679504T3 (en) 1997-02-24
BR9507491A (en) 1997-08-12
PL180881B1 (en) 2001-04-30
CN1105011C (en) 2003-04-09
HU9602870D0 (en) 1996-12-30
PL317835A1 (en) 1997-04-28
EP0679504B1 (en) 1996-09-18
CA2187806A1 (en) 1995-11-02
HUT76120A (en) 1997-06-30
BG100971A (en) 1997-10-31
DE69400576T2 (en) 1997-04-17
GR3022063T3 (en) 1997-03-31
CN1147226A (en) 1997-04-09
ES2093502T3 (en) 1996-12-16
MX9605025A (en) 1998-05-31
AU2215795A (en) 1995-11-16
BG61868B1 (en) 1998-08-31
JPH10505288A (en) 1998-05-26
US6106452A (en) 2000-08-22
WO1995029055A1 (en) 1995-11-02
NZ283746A (en) 1998-07-28
NO964466L (en) 1996-10-21
DE69400576D1 (en) 1996-10-24
ATE142941T1 (en) 1996-10-15
CA2187806C (en) 2002-12-31
RU2127665C1 (en) 1999-03-20
CZ9603085A3 (en) 2001-10-17
NO964466D0 (en) 1996-10-21

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