EP2755892A1

EP2755892A1 - Method and device for producing cigarette packages

Info

Publication number: EP2755892A1
Application number: EP12756375.7A
Authority: EP
Inventors: Jens Schmidt; Martin Bischoff
Original assignee: Focke and Co GmbH and Co KG
Current assignee: Focke and Co GmbH and Co KG
Priority date: 2011-09-16
Filing date: 2012-09-06
Publication date: 2014-07-23
Anticipated expiration: 2032-09-06
Also published as: EP2755892B1; CN103889842B; BR112014005797A2; CN103889842A; WO2013037463A1; JP2014526400A; DE102011113401A1; BR112014005797B1; JP6196971B2

Abstract

In the manufacture of packages from or with a blank (10) of thin cardboard, a material web (34) that is prepared in terms of printing according to the appearance of the packages is processed. Firstly, the blanks (10) are separated from the web (34) taking the printing into account. Subsequently, the blanks (10) are provided with necessary applications (embossing, punching) in the region of an application assembly (37) and then delivered to a packing unit.

Description

Method and device for producing cigarette packets Description

The invention relates to a method for producing packages according to the preamble of claim 1. Furthermore, the invention relates to a device for carrying out the method. The packs to be produced consist of foldable packaging material which is available as a continuous material web in the area of a processing or packaging machine, from which blanks for packs are separated. Due to the material thickness and / or dimensional stability, the packaging material is provided with fold lines formed by material deformation for the formation of fold edges, in particular packing edges. This usually applies to packaging material with a material weight of significantly more than 100 g / m ² (paper). Priority is given to cardboard with a weight of about 140 g / m ² or more. The blanks made from this material can also have punching or cutting lines for limiting folding flaps and / or perforation lines for folds. Such a blank can advantageously be designed according to the examples according to patent application DE 10 2011 105 695.9.

The processing of the material from a continuous web is the subject of DE 694 00 120 T2. The applications required for the processing of the blanks are applied in the area of the continuous web with assignment to a blank. This is then separated from the web and fed to the packaging process. The above example concerns the production of soft packs for cigarettes. Also for the production of packages from cardboard blanks, namely folding boxes for cigarettes, the processing of a continuous web is known (EP 0 885 809 B1). Here, too, will be so

CONFIRMATION COPY procedure that embossing and punching in the area of the web attached and then the finished blanks are separated from the web.

The invention has for its object to further develop the production of blanks from foldable packaging material with respect to paper increased dimensional stability and in particular to improve the accuracy in the attachment of the applications (embossing, punching).

To achieve this object, the inventive method is carried out with the characterizing features of claim 1.

The invention is based on the finding that the applications can be attached to the web with greater accuracy and with higher performance after separation of the blank from the web. The separated blanks are preferably fed sequentially to an application unit. In its area, folding lines are created by embossing and punching cuts for folding flaps - controlled by print marks. The finished blank is then fed to a folding unit, in particular a folding turret. Appropriately, the (outer) printing is applied according to the design of the pack on the continuous web of material - in the field of printing or in the packaging machine. The deformations or embossments, cuts and punches, on the other hand, are applied to the blank immediately after the blank has been cut off. The device consists of a device for feeding the material web to a cutting or punching member for separating the blanks, a transfer unit for feeding the blanks sequentially to a stamping and punching unit, preferably with creasing and embossing rollers and with cutting rollers.

A special feature is the drive of organs of the device. Transport organs, in particular preferred rollers, transport rollers, guide rollers, etc. are driven by individually controllable servomotors. The embossing and punching unit (application unit) may be connected to the central machine drive, in particular with a "king shaft".

Further features of the method and the device are explained in more detail below with reference to the drawings. It shows:

1 shows a (cigarette) pack in perspective view,

Fig. 2 shows a detail of the package of FIG. 1, namely a

Floor folding, also in perspective,

3 is an expanded blank of an outer cup of the package of FIG. 1, on an enlarged scale,

Fig. 4 organs of a packaging machine with an aggregate for

Preparation of blanks,

5 shows the detail V in Fig. 4, on an enlarged scale,

6 is a detail of the device of FIG. 5 in plan view according to arrow VI, on an enlarged scale,

7 shows a development of a creasing and embossing roll with blanks,

8 is a development of a part of a cutting roller,

9 is a detail IX of FIG. 5 on an enlarged scale,

10 is a view analogous to FIG. 9 of another embodiment,

11 is a detail XI of FIG. 5 on an enlarged scale,

12 shows a further detail of embossing tools in a representation analogous to FIG. 9, FIG. 10, FIG.

Fig. 13 shows a detail of the packaging machine according to Fig. 5 for a modified embodiment.

The present technology is preferably usable for packings from or with at least one blank 10 made of thin cardboard. A particular example of application are modified soft packs or soft-pack packages (FIG. 1) with an outer pack 11 made of cardboard, which has a material thickness or strength of about 140 g / m ² . The example shown is a cigarette pack, in which a group of cigarettes with an inner blank or Stanniolzuschnitt forms a closed cigarette block 12. This is in the open-top, cup-shaped outer pack 1 1 arranged. At the open side of the outer pack 11 of the cigarette block protrudes

12 slightly out of the outer pack 11 out. A transverse banderole

13 extends over this end face of the pack. The spread blank 10 shown in FIG. 3 forms a front wall 14, a rear wall 15, a closed side wall 16 and edge tabs 17, 18 for a side wall 19 formed therefrom. A bottom wall 20 is formed in a special way. This consists of a trapezoidal inner tab 21, triangular intermediate tabs 22, side tabs 23 in the region of the side walls 16, 19 and an outer cover flap 24, which covers the outside of the bottom wall 20 substantially.

The blank 10 - according to FIG. 3 or in another embodiment - is provided with a plurality of applications. In the exemplary embodiment shown, these are deformations of the material of the blank 10, in particular grooves for forming longitudinal edges 25 and grooves for forming transverse edges 26. The longitudinal edges 25 in a parallel arrangement delimit the blank areas 14..18 and form the upright packing edges. The transverse edges 26 define the delimitation of the packing walls 14. 18 relative to the bottom wall 20. The stamping lines 25, 26 terminate at intervals in the region of intersections, so that each groove has a defined length.

Other applications are located in the region of the bottom wall 20 or an edge strip with the folding tabs 21.24 of the bottom wall 20. The folding tabs 21, 22 and 23 are limited by converging, obliquely directed fold lines 27, 28. These can be designed as material weakening, in particular as perforation lines. The fold lines 27, 28 are arranged at an acute angle to each other and run together in the region of a rear-side pack corner (after completion of the outer pack 11). The cover flap 24 assigned to the front wall 14 or arranged in its extension is laterally delimited by cut lines 29. The two line-shaped punches 29 extend in continuation of the front wall 14 delimiting longitudinal edges 25th Furthermore, in the present embodiment, the front wall 14 is provided with a (decorative) design, in this case with an emblem 30, which is formed as an embossment of the material of the blank 10, in particular as outwardly projecting embossing (Fig. 1).

A special feature is the production of the blanks 10 in the area of a packaging machine. The present exemplary embodiment (FIG. 4) concerns a schematically illustrated packaging machine for the production of cup packs, hitherto in the embodiment "soft cup pack". Nuclear unit of such a packaging machine is a folding turret 31 with receptacles for each blank 10 and folding members (not shown) for folding the blank 10. In the pictures here are folding mandrels 32, so arranged axially parallel, rectangular in cross-section hollow body, the the outside record a blank 10 to be folded.

The packaging machine is assigned a special cutting unit 33. This is a material web 34, in particular board web fed. The material web 34 is expediently pulled off a reel (not shown). In the area of the trimming unit 33, the blanks 10 are successively separated from the material web 34 and fed to the packaging machine or the folding turret 31 after processing.

The cutting unit 33 (FIG. 5) consists essentially of a web guide 35, a separating unit 36 for separating the blanks 10 from the material web 34, an application unit 37 and a transfer member 38 for transferring the blanks 10 to the folding turret 31. The above units are arranged functionally sequentially. The material web 34, which is preferably printed on one side completely in accordance with the packaging desgin, is fed via deflection rollers 39 to an edge control 40, in the region of which the continuously transported material web 34 is exactly aligned with respect to its longitudinal edges. The material web 34 then passes into the region of the separation unit 36. This consists in the present case of a knife roller 41 with a fixed counter knife 42. The thus formed separating device is preceded by an adjusting unit which controls an exact printing cut in relation to the printing, by means of print marks, which are attached to the material web 34. The exact feed movement of the web 34 by the web roll 43 is effected by a print mark reader 45, in the region of a deflection roller 46, the position of the print marks detects and transmits a control signal to the drive of the web roll 43. Thereafter, the exact positioning of the separating cut for the blank 10 is controlled. The web roll 43 is driven by a servo motor 47 controlled by the print mark reader 45. The blank 10 with (complete) printing is supplied to the application unit 37. Subsequent to the separating unit 41, 42, the blank is taken over by a conveyor, in the present case by a transfer roller 48, which is designed as a suction roller. Also, this conveying member is controlled to ensure that the blank 10 is transferred in an exact relative position to the application unit 37. By an edge sensor 49, the cutting edge of the blank is detected and then controlled the drive of the transfer roller 48, in this case also by a servo motor 47th

In the region of the application unit 37, the different material deformations and punches are applied to the blank 10 (FIG. 3). For this purpose, the application unit 37 is equipped with different, corresponding to the respective application tools that attach 10 deformations and / or punched during transport of the blank. In the embodiment of Fig. 5, two axially parallel rotating machining tools are provided, namely a forming or embossing roll 50 and a (subsequent to the conveying direction) cutting roller 51. The embossing roller 50 is provided along the circumference with elevations, in this case with axially parallel ribs 52 and circumferentially extending rib portions 53. This Surface design of the embossing roller 50 causes the transmission of groove-like deformations or depressions on the blank 10 to form the longitudinal edges 25 on the one hand and the transverse edges 26 on the other. The embossing roller 50 cooperates with a counter-member, in this case with a counter-roller 54. This is expediently provided with a smooth circumferential surface, that is without depressions in the region of the embossing organs. This results in a formative material deformation essentially only by compressing the material of the blank 10 (FIG. 9). The blank 10 is preferably positioned in the area of the application unit 37 such that the inside faces the application organs, that is to say in particular the embossing roller 50, and the printed outside rests against the counter-member or counter-roller 54.

The next, second application tool is the cutting roller 51 with cutting or punching tools for applying separating cuts, perforations or the like. In the present embodiment of the blank (FIG. 3), axially parallel or transverse cutting blades 55 are used to produce the punching lines 29 and perforation blades 56. These cutting or punching members are arranged in a relative position that corresponds to the corresponding configuration of the blank 10, in this case the bottom wall 20, corresponds. For the production of the fold lines 27, 28 corresponding rows of a plurality of spaced perforation blades 56 are arranged for each perforation line on the circumference of the cutting roller 51. The processing rollers 50, 51 are adapted in terms of design and dimension to the individual application tasks. The embossing roller 50 is provided with the ribs 52 and rib portions 53 in the region of a cylindrical roller portion 57. Outside the roller section 57, the diameter of the embossing roller 50 is reduced. Accordingly, the cutting roller 51 has a presently arranged on the edge, narrow roller portion 58 which carries the cutting tools 55, 56 on the lateral surface.

The movements of the organs are coordinated with regard to the (conveying) speed. Conveniently, the transfer roller 48 with A higher conveying speed driven than the aterialbahn 34 in the region of the separation unit 36. A 4% increased speed of the transfer roller 48 is useful to segregate the blank 10 of the separation unit 36. The organs of the application unit 37 in turn have a higher conveying speed than the transfer roller 48, namely by preferably 8% higher. This applies to the embodiment of FIG. 5 for the rotational or conveying speed of the rollers 50, 51 and 54th

In addition to the technical applications, 37 decorative deformations can be generated by the application unit, in this case the emblem 30. For this purpose, a corresponding increase 59 is arranged with the contours of the emblem 30 on the lateral surface of the embossing roller 50. In the present embodiment, the elevation 59 of the embossing roller 50 is associated with a correspondingly formed recess 61 in the region of the counter-element, in the present case in the lateral surface of the counter-roller 54.

A special feature is that in the embodiment according to FIG. 5, FIG. 6, the (two) application elements 50, 51 are assigned to a common counter-roller 54. The embossing roll 50 and the cutting roll 51 are arranged to cooperate with a circumferential offset of the counter roll 54 therewith. The cooperating rollers 50, 51, 54 are preferably driven separately due to geared connection to the central machine drive. Bevel gears 60 are symbolically associated with the organs to show their geared connection with the machine drive (bevel).

The blanks 10 provided with the described applications are transported one after the other following the application unit 37 along a blank web 62 and transferred to a feed roller 63. This is designed as a suction roll and connected to the central machine drive. An intermediate roller 64, which takes over the blank 10 from the blank web 62 and rests against the circumference of the feed roller 63 with an outer guide and a corresponding deflection, is arranged upstream. The intermediate roller 64 is also an organ for the exact transfer of the blanks to the Feed roller 63, so this one there on the folding turret _31st or the folding mandrels 32 have coordinated relative position. For this purpose, a further edge sensor 65 of the intermediate roller 64 is assigned to the scanning of a transverse edge of the blank 10. The edge sensor 65 controls a servo motor 47 as a drive for the intermediate roller 64. The transfer of the finished blank 10 to the folding turret 31 takes place in a suitable, known manner ,

FIGS. 7 and 8 show schematically a development of the lateral surfaces of the embossing roll 50 on the one hand (FIG. 7) and the cutting roll 51 on the other hand (FIG. 8). The situation in the area of the roller sections 57, 58 is shown in each case. From Fig. 7 it can be seen that due to appropriate dimension two blanks 10 with a corresponding distance in the circumferential direction on the embossing roller 50 recording. For a full turn, therefore, two blanks 10 are provided with applications. The roller section 58 of the cutting roller 51 is designed and dimensioned accordingly (FIG. 8).

The design of tools or working means of the application organs, here the rollers 50, 51, 54, are shown by way of example in FIGS. 9 to 12. Fig. 9 shows the formation of the embossing roller 50 with the elevation or rib 52 and smooth-surfaced counter roller 54. The alternative thereto is shown in FIG. 10. There, the rib 52 is associated with a bead-like depression 66 of corresponding dimension, but with a rounded cross-sectional shape. The material of the blank 10 is pressed into the depression 66 during the formation of folded edges 25, 26 with corresponding deformation and formation of a deeper groove of the material.

From Fig. 11 it can be seen that the cutting or punching tools of the application member 51 are formed like a knife with a sharpened cutting edge. This penetrates completely through the material of the blank 10 until it rests against the lateral surface of the counter roller 54.

Fig. 12 shows a detail for embossing the blank 10, for example for attaching the emblem 30. At the periphery of the embossing roller 50, a fitting 67 (releasably) is attached. This is provided with elevations and depressions according to the imprint to be produced. Corresponding is the Mantle surface of the counter-roller 54 with recesses 66, suitably provided to the increase 59 and the fitting 67.

An alternative embodiment to the device according to FIG. 5 is shown in FIG. The same or similar parts of the device are provided with the same reference numerals. The deviation relates in particular to the formation of the application unit 37. Each application element, that is to say the embossing roller 50 on the one hand and the cutting roller 51 on the other hand, is assigned a counter roller 68, 69. The unit therefore consists of four axially parallel rollers 50, 51 and 68, 69. The blanks 10 are conveyed along a horizontal path through the application unit 37 formed in this way. The transfer of material deformations or embossing as well as of punch cuts expires in the same way as already described. It is also conceivable, for procedural reasons, to attach individual applications, for example embossing and / or punching, in the region of the material web 34, but the remaining or predominant applications, however, are advantageous to attach to the single blank.

The present technology is suitable for packs of various designs, in particular for cigarette packs, as far as a pack part (outer pack) is made of thin cardboard. Also folding boxes for cigarettes can be manufactured in the manner described.

***** LIST OF REFERENCE NUMBERS

10 Cutting edge control 40

11 Exterior pack 41 Knife roller

12 cigarette block 42 counter knife

13 band 43 web roll

14 front wall 44 pressure roller

15 Rear wall 45 Print mark reader

16 side wall 46 deflection roller

17 Randlappen 47 servomotor

18 Randlappen 48 transfer roller

19 side wall 49 edge sensor

20 bottom wall 50 embossing roller

21 inner tabs 51 cutting roller

22 intermediate lobes 52 rib

23 side tabs 53 rib section

24 cover flap 54 counter roll

25 longitudinal edge 55 cutting blade

26 transverse edge 56 perforation knives

27 fold line 57 roll section

28 fold line 58 roll section

29 punching line 59 increase

30 emblem 60 bevel gear

31 Folding turret 61 recess

32 folding mandrel 62 blank sheet

33 Cutting unit 63 Feeding roller 34. Material web 64 intermediate roller

35 web guide 65 edge sensor

36 separation unit 66 recess

37 Application unit 67 Fitting

38 transfer element 68 counter roller

39 Guide roller 69 Counter roller

Claims

claims

1. A method for producing packages of foldable packaging material, in particular cuboid (cigarette) packages with at least one blank (10) of (thin) cardboard, which is separated from a material web (34) and the applications, in particular formed by embossing Folding lines and / or punching lines and / or perforation lines and / or (decorative) material deformations and / or (colored) printing, characterized by the following features:

a) the printing corresponding to the external appearance of the packings to be produced is applied to the continuous material web (34) of thin cardboard or similar packaging material, b) then blanks (10) are separated from the material web (34) in a positionally accurate manner,

c) thereafter, (further) applications, in particular embossing and / or punching, are applied to the blank (10),

d) finally, the completed blank (10) is supplied to a packaging unit, in particular a folding turret (31).

2. The method according to claim 1, characterized in that the applications are applied to the blanks (10) in successive steps, in particular such that after the production of the blank (10) first material deformations are performed, in particular line-shaped embossments (25, 26) be applied for folding flaps and then punched, in particular cutting lines (29) for the limitation of folding tabs (24) and / or perforation lines as fold lines (27, 28).

3. The method according to claim 1 or 2, characterized in that embossing, in particular material deformations to form folding edges (25, 26), on the inside of the blank (10) - on the for printing opposite side -, preferably by means of acting on the (unprinted) inside stamping tools and smooth-surfaced counter organs.

4. The method according to claim 1 or one of the further claims, characterized by the following features:

a) the separation of the blanks (10) from the material web (34) is controllable by means of print marks,

b) the application of the applications to the separated blanks (10) in the region of an application unit (37) can be controlled by scanning of (transverse) blank edges.

5. The method according to claim 1 or one of the further claims, characterized in that the applications are carried out on the blanks (10) in separate, successive workstations, in particular such that by material deformation (embossing) generated applications in a (first) workstation and Separating cuts or punches are produced in a separate (second) workstation.

6. An apparatus for producing packages of foldable packaging material, in particular cuboid (cigarette) packages with at least one blank (10) of (thin) cardboard, which is separated from a material web (34) and the applications, in particular formed by embossing Folding lines and / or punching lines and / or perforation lines and / or (decorative) material deformations and / or (colored) printing, characterized by the following features:

a) guiding and conveying elements for a material web (34) prepared preferably with complete printing for the blank (10), b) a separating unit (36) for separating blanks (10) from the material web (34),

c) a the application unit (37) following the separation unit (36) for attaching applications to each blank (10), preferably with several, for example two in the conveying direction of the blank (10) successive application tools, in particular an embossing roller (50) and a arranged next to cutting roll, d) further transport members for transporting the blanks (10) to a folding device, in particular a folding turret (31).

7. Apparatus according to claim 6, characterized by the following features:

a) the embossing roll (50) has elevations (59) or projections distributed along the circumference, in particular ribs (52) corresponding to the grooves and / or embossings to be applied to the blank (10), b) a counter-tool, in particular a counter-roll ( 54) is preferably formed with a smooth-surfaced jacket.

8. The device according to claim 6 or one of the further claims, characterized in that the embossing roll (50) preferably subsequent cutting roller (51) on the outer periphery projections in the execution of cutting blades (55) or perforation knives (56) for attachment of continuous cutting lines or perforation lines in cooperation with a counter-roller (54).

9. Apparatus according to claim 6 or one of the further claims, characterized in that the organs of the application unit (37), in particular the embossing roller (50) and the cutting roller (51) are associated with a common counter-member, in particular the common counter-roller (54).

10. The device according to claim 6 or one of the further claims, characterized in that one of the separating unit (36) subsequent conveying member for the blanks (10), in particular a transfer roller (48) with a higher (conveying) speed is driven as the separation unit (36) and that the organs of the subsequent application unit (37), in particular the embossing roller (50) and the cutting roller (51), are driven at yet higher (conveying) speed than the transfer roller (48).

11. The device according to claim 6 or one of the further claims, characterized in that the application unit (37) subsequently a transfer unit for supplying the completed blanks (10) to the folding turret (31) is arranged, in particular with a feed roller (63) in the embodiment as a suction roll and one of these upstream intermediate roll (64) for the exact alignment of the blanks (10) on the acquisition through the folding turret (31).

12. The device according to claim 6 or one of the further claims, characterized in that separating members (41, 42) of the separation unit (36) are associated with organs for the exact positioning of the material web (34), in particular a web roll (43) with pressure roller (44). , wherein the organs or the web roll (43) by a print mark reader (45) for detecting print marks on the material web (34) is controllable, preferably via a drive means of servomotor (47) for the web roll (43).

13. The device according to claim 6 or one of the further claims, characterized in that a conveying member for transferring the separated blanks to the application unit (37), in particular the suction roller formed as a transfer roller (48), a controller for the exact alignment of the blanks (10) is associated, in particular an edge sensor (49) for detecting a blank edge and control of the transfer roller (48) via a servo motor (47).

14. The device according to claim 6 or one of the further claims, characterized in that transfer organs for supplying the blanks (10) to the folding turret (31), in particular the feed roller (63), a control unit for the exact positioning of the blanks (10) is associated, preferably an edge sensor (65) for detecting a blank edge in the region of the feed roller upstream intermediate roller (64), which is driven by a controllable by the edge sensor (65) servomotor (47).

15. The device according to claim 6 or one of the further claims, characterized in that rotatable conveying or working members, in particular a knife roller (41) of the separation unit (36) and / or rollers (50, 51, 54, 68, 69) of the application unit (37) and / or the feed roller (63) in the region of the folding turret (31) are connected to a central machine drive, in particular with a vertical shaft.

*****