EP0431418B1 - Dispositif de pliage de matériel en forme de barre non rotatif radialement - Google Patents
Dispositif de pliage de matériel en forme de barre non rotatif radialement Download PDFInfo
- Publication number
- EP0431418B1 EP0431418B1 EP90122387A EP90122387A EP0431418B1 EP 0431418 B1 EP0431418 B1 EP 0431418B1 EP 90122387 A EP90122387 A EP 90122387A EP 90122387 A EP90122387 A EP 90122387A EP 0431418 B1 EP0431418 B1 EP 0431418B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- pivoted
- roller
- arm
- crank
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
- B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete
Definitions
- the invention relates to a device for bending rod-shaped material, which is essentially non-rotatable about the longitudinal axis, according to the preamble of claim 1.
- a corresponding device for bending ring material can be found in US-A-4,782,684.
- the material is unwound from a coil in order to be fed to the bending device after passing through a straightening station, which is arranged at the free end of a projecting bending swivel arm.
- the bending device comprises two stationary bending rollers, to which a crank roller is rotatable in order to bend the material to the desired extent.
- the cantilever bending arm itself can be pivoted clockwise and counterclockwise by a maximum of 360 °.
- the present invention lies u. a. based on the problem of developing a device of the type described at the outset in such a way that the material can be bent into almost any spatial shape without difficulty, without the already bent material itself leading to a disability. It should also be possible to bend both different material and bending roll diameters with one and the same device. Finally, there should be the possibility of an exact detection and control of the bending angle without hindrance.
- the bending roller comprising the bending roller as a bending crank
- the bending device designed to rotate about this bending roller
- a force transmission element which can be moved in the longitudinal direction of the bending pivot arm and which interacts with an intermediate gear, one of which rotates Element forms a unit with the bending crank
- the bending crank is connected to the bending head interchangeably with the bending swivel arm, an element set in rotation by the force transmission element remaining as part of the intermediate gear on the bending swivel arm.
- the piston rod itself is preferably one of the hydraulic cylinder pressurized.
- the power transmission element could also be a chain.
- the bending crank causing the bending of the material is rotated with simple measures, whereby the intermediate gear ensures that when the toothed or piston rod is fully extended, it comes to rest with its free end in the region of the bending roller, so that consequently the drive does not result in an extension of the bending head, which limits the bending possibilities, and thus the cantilevered bending swivel arm.
- one and the same bending swivel arm can be assigned different bending heads with different bending roller dimensions, so that materials of different diameters and / or material can be easily bent around bending rollers of different diameters.
- connection or disconnection between an unchangeable drive unit and a drive unit exchangeable bending unit without, for example, control, drive lines or the like having to be plugged or unplugged.
- the swivel radius of the bending swivel arm is approximately equal to the diameter of the bending roller plus that which is twice the diameter of the material.
- the compact structural unit results in particular from the fact that the drive unit extends essentially along the axis of rotation x of the bending swivel arm and lies on the side of the bending arm facing away from the bending plane.
- the cantilevered, overhung flexible swivel arm is consequently designed in its radial dimensions such that material can be bent into the bending plane, since the swivel radius of the flexible swivel arm and its end bending area itself is essentially only determined by the diameter of the bending roller.
- the length of the cantilever arm also specifies the bending area in the bending plane in the direction of the pivot bearing at a maximum bending of 180 °. Consequently, surface and / or space bends can occur which can develop freely along and in front of the swivel arm without the pivoting of the bending swivel arm itself being hindered by curved material.
- the swivel arm can be rotated by any angle about its longitudinal axis, so that consequently any position can also be defined as a zero position from which it can be bent and the swivel arm can be rotated clockwise and counterclockwise.
- the device according to the invention consequently does not have the limitation in the pivoting movement known from the prior art.
- the hydraulic cylinder is supplied via the radial encircling chambers embedded in the pivot bearing, which are open towards the bearing journal and sealed laterally with respect to it, with holes being provided in the bearing journal in the region of the chambers, which are connected to the hydraulic cylinder via e.g. Holes or lines are connected.
- the piston is moved in the cylinder, so that the fluid displaced by the piston movement can flow out on the chamber not supplied with fluid.
- the chambers preferably run between ball bearings, by means of which the bearing journal is supported with respect to the stand.
- the fluid flow is used to control or detect the angular position of the bending roller or of a bending crank receiving it.
- an oil flow meter with an angle of rotation pulse generator is essentially used, which detects and displays the respective angular position of the bending crank in proportion to the flow rate of the fluid actuating the hydraulic cylinder. Since the quantity of measurement oil and the quantity of oil output are the same, the oil flow meter can be arranged in an oil supply line in which the drive output is transmitted simultaneously with control data. This makes it possible to keep the bending swivel arm free of rotating power or control lines, which otherwise lead to a hindrance and limit the swiveling movement.
- the measure which enables the control or detection of the angular position of the bending roller is also to be used independently of the device according to the invention, so that the relevant development is to be given independent protection.
- a device for straightening and bending ring material is shown purely schematically.
- the device comprises a stand or a swivel bearing housing (2) from which a flexible swivel arm (1) extends.
- the bending swivel arm (1) is designed as a cantilever arm, which is supported via a shaft end or pin (23) in a swivel bearing (32) via ball bearings (33).
- the bending crank (3) is rotated via a crankshaft (29) of a bending drive, which comprises meshing gears of an intermediate gear and a toothed piston rod (22) acting thereon, which extends in a longitudinal direction of the bending swivel arm (1) extending hydraulic cylinder (34) in the manner described below is displaceable (see Fig. 11).
- a counter-holder (6) is arranged on the bending pivot arm (1), which protrudes from the bending plane (H).
- This bending plane (H) is predetermined by a surface of the bending swivel arm (1), into which material (8) to be bent runs and from which the crank roller (4) and the bending roller (5) protrude.
- the projecting bending swivel arm (1) can be rotated about the longitudinal axis (X) of the material (8).
- swivel gearwheels (27) mesh with one another, one of which stems from the shaft end (23) and the other from a swivel drive (9) which is fastened to the stator housing (2).
- the projecting bending swivel arm (1) is now dimensioned such that its swiveling radius (r) is approximately equal to the diameter of the bending roller (5) plus twice the diameter of the material (8). This results in the possibility of carrying out room bends without the bending swivel arm (1) leading to an obstruction (see also FIGS. 3, 4, 5 and 6).
- the distance (q) between the material axis and the flat surface (13) of the bending arm (1), which preferably has the shape of a half cylinder, along which curved material can be moved, should be at most twice the diameter of the Of rod material (8) to prevent permanent deformation.
- the cantilevered swivel arm (1) is rotated about its longitudinal axis (X) by the intermeshing swivel gearwheels (27), which coincides with that of the directional material (8) to be bent.
- a pivoting of the bending crank (3) and thus the crank roller (4) around the bending roller (5) takes place by means of the hydraulic cylinder (34) and the piston which can be displaced therein.
- the hydraulic control to comprise a pressure line (p) to supply a return line (t) and a hydraulic switching valve system (28).
- the fluid line (a) or the fluid line (b) is optionally pressurized in order to supply either the cylinder space (21) or the cylinder space (20) with the fluid, as a result of which the piston rod (22) moves, the maximum of which Stroke w is. This ensures that at maximum stroke the free end of the piston rod (22) does not protrude beyond the bending roller (5), so that consequently the space bending process cannot be impaired.
- the piston rod (22) extending in the longitudinal direction of the bending swivel arm (1) with the hydraulic cylinder (34) receiving it is dimensioned such that no parts have the swivel radius (r) protrude outwards, so that the bending process or the bent material cannot be hindered as a result.
- the exchangeable bending crank (3) can be regarded as a further characteristic feature of the invention. Since there is inevitably a change in dimension V, i.e. the distance of the material axis X from the axis of rotation of the bending roller (5) and the positions of the crank roller (4) and the counter-holder (6), with different material diameters and / or bending roller diameters, the invention proposes that this unit consisting of a bending crank (3) and counter-holder (6) is designed to be replaceable as a bending head (14).
- the line (k) illustrates a cutting line that indicates the dividing line between the bending head (14) and the bending swivel arm (1).
- the intersection line (k) runs between the toothed wheel (40) meshing with the toothed rack (22), which remains on the bending arm (1), and the toothed wheel (42) meshing with the toothed wheel (42) forming a rigid unit with the crankshaft (29) (41).
- the interface separates the drive unit from the bending head (14), so that lines pressurized with pressure medium and control lines or the like. do not need to be separated.
- Fig. 11 illustrates once again that the rack (22) located at the top in the exemplary embodiment meshes along the path (w) with the gear (40) located below, as a result of which the Bending crank (3) to the extent necessary about the axis of the gear (42) or the crankshaft (29) and thus about the bending roller (5) can be pivoted.
- the rack (22) is extended, the front end lies in the area of the crank (5), and consequently does not protrude from the front thereof, so that the bending process by the rack (22) is not obstructed on the end side.
- the intermediate gear consisting of the gear wheels (40), (41) and (42) in the exemplary embodiment can of course also comprise other transmission means and / or a different number of gear wheels.
- the fluid is supplied to the annular chambers (18) and (19) and thus to the lines (36), (37) connected to the cylinder (34) via the oil line (b) in which an oil flow meter (24) is arranged, which in turn actuates an angle encoder (25). Consequently, depending on the flow rate, the respective angular position (z) of the bending crank (3) can be read on the angle transmitter (25) or on a display device controlled by it.
- FIGS. 7, 8, 9 and 10 show four different positions of the bending plane, the bending direction, which is predetermined by the pivoting of the crank roller (4) around the bending roller (5), being identified by the reference symbol (10).
- the material (8) has been bent by pivoting the crank roller around the bending roller (5) by 180 ° in the bending plane (H), so that the bent leg runs parallel to the unbent material (8).
- the material is first shifted to the right in the drawing, as can be seen in FIG. 4.
- the bending crank is pivoted back into the starting position, as is illustrated in FIGS. 3 and 4.
- the bending swivel arm (1) is rotated by 90 ° to the plane (H) as shown in FIG.
Claims (9)
- Dispositif de pliage d'un matériau en forme de barre et en substance non rotatif autour de l'axe longitudinal, avec un dispositif de pliage comprenant un rouleau de pliage (5) et un rouleau a manivelle (4) ainsi qu'un contre-appui (6) pour le pliage du matériau (8), le contre-appui (6) faisant partie d'une tête de pliage (14) d'un bras pivotant de pliage (1) en porte-à-faux par rapport à un palier de pivotement stationnaire, qui de son côté est maintenu à pivotement dans le palier de pivotement par l'intermédiaire d'un pivot de palier (23) à alésage axial de guidage du passage du matériau et qui peut pivoter autour de l'axe longitudinal (x) du materiau, le matériau pouvant être déplacé le long d'un plan de pliage du bras pivotant de pliage, plan dans lequel se trouve l'axe longitudinal du materiau à plier, et le dispositif de pliage pouvant de préférence être actionné par l'intermédiaire d'une unité d'entraînement (22, 40, 41, 42) actionnée par un fluide sous pression et pouvant être alimentée en fluide sous pression par l'intermédiaire d'alésages ou de conduites (36, 37) qui s'étendent suivant la direction longitudinale du bras pivotant de pliage et sont en communication avec des chambres rotatives (18, 19) dans un tronçon stationnaire du dispositif, caractérisé en ce que le dispositif de pliage pouvant tourner autour de l'axe (29) du rouleau de pliage, configuré sous la forme d'une manivelle de pliage (3) comprenant le rouleau de pliage (5) avec le rouleau à manivelle (4) pouvant tourner autour de ce rouleau de pliage (5), peut tourner par l'intermédiaire d'un élément de reprise de force (22) pouvant se déplacer dans la direction longitudinale du bras pivotant de pliage (1) et interagissant avec une transmission intermédiaire (40, 41, 42) dont un élément rotatif (42) forme une unité avec la manivelle de pliage, en ce que la manivelle de pliage est reliée de manière échangeable par la tête de pliage au bras pivotant de pliage (1), un élément (40) mis en rotation par l'élément de reprise de force restant sur le bras pivotant de pliage en tant que partie de la transmission intermédiaire (40, 41, 42).
- Dispositif selon la revendication 1, caractérisé en ce que l'élément de reprise de force présente la forme d'une crémaillère (22) qui est la tige de piston d'un cylindre hydraulique (34) alimenté par un fluide sous pression.
- Dispositif de préférence selon l'une des revendications précédentes, caractérisé en ce que le rayon de pivotement (r) du bras pivotant de pliage (1) vaut environ le diamètre du rouleau de pliage (5) plus le double du diamètre du matériau (8).
- Dispositif selon au moins l'une des revendications précédentes, caractérisé en ce que sur le bras de pliage peuvent être disposées des têtes de pliage qui sont mutuellement decalées de la distance (v) entre l'axe longitudinal (x) du matériau et l'axe de rotation du rouleau de pliage (5), la partie de la transmission intermédiaire (40, 41) disposée sur la tête de pliage interagissant avec l'élément (42) en tant que pignon (42) pouvant être mis en rotation par l'élément de reprise de force (22) en tant que crémaillère.
- Dispositif selon la revendication 1, caractérisé en ce que, lorsque la crémaillère (22) est en position extrême extérieure, son extrémité libre se termine à l'intérieur des dimensions du rouleau de pliage (5).
- Dispositif de préférence selon au moins l'une des revendications précédentes, caractérisé en ce que le contrôle et/ou la détection de la position angulaire de la manivelle de pliage (3) s'effectuent par l'intermédiaire d'un dispositif de mesure de débit de fluide (24) qui est disposé dans une des conduites (b) alimentant ou reprenant le fluide des chambres (18, 19).
- Dispositif selon au moins l'une des revendications précédentes, caractérisé en ce que le matériau à plier (8) s'étend au moins partiellement dans un creux du bras pivotant de pliage (1), qui présente une surface libre (13) à une distance (q) de l'axe de rotation (x).
- Dispositif selon au moins la revendication 1, caractérisé en ce que les éléments de reprise de force (22, 40, 41, 42) sont disposés par rapport à l'axe de rotation (x) du bras pivotant de pliage (1) en substance en face de la surface libre (13) et le long de l'axe de rotation (x) du bras pivotant de pliage (1).
- Dispositif selon au moins l'une des revendications précédentes, caractérisé en ce que les chambres (18, 19) en communication avec les alésages (36, 37) pour le fluide sous pression sont disposées à rotation axiale dans le palier de pivotement (32) reprenant le pivot (23) de palier du bras pivotant de pliage (1), de préférence entre des paliers à billes (33).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90122387T ATE97038T1 (de) | 1989-11-27 | 1990-11-23 | Vorrichtung zum biegen von stabfoermigem radial nicht drehbarem material. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3939128A DE3939128A1 (de) | 1989-11-27 | 1989-11-27 | Vorrichtung zum biegen von stabfoermigem radial nicht drehbarem material |
DE3939128 | 1989-11-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0431418A2 EP0431418A2 (fr) | 1991-06-12 |
EP0431418A3 EP0431418A3 (en) | 1991-08-21 |
EP0431418B1 true EP0431418B1 (fr) | 1993-11-10 |
Family
ID=6394246
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90122387A Expired - Lifetime EP0431418B1 (fr) | 1989-11-27 | 1990-11-23 | Dispositif de pliage de matériel en forme de barre non rotatif radialement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0431418B1 (fr) |
AT (1) | ATE97038T1 (fr) |
DE (2) | DE3939128A1 (fr) |
ES (1) | ES2047806T3 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4002127A1 (de) * | 1990-01-25 | 1991-08-01 | Tracto Technik | Biegemaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3373587A (en) * | 1966-12-08 | 1968-03-19 | Shubin Vladimir Nikolaevich | Automatic tube bending machines |
IT1201974B (it) * | 1985-07-22 | 1989-02-02 | Giuliano Gallico | Metodo e macchina per la realizzazione di sagomati spaziali |
GB2190161B (en) * | 1986-05-07 | 1990-09-19 | Ronald Edward Benton | Fluid flow or pressure transmission device |
FR2610852B1 (fr) * | 1987-02-17 | 1993-07-02 | Picot Sa | Machine a cintrer les tubes, pourvue de deux tetes de cintrage |
DE3811891A1 (de) * | 1988-04-09 | 1989-06-15 | Semmlinger Werner | Vorrichtung zum biegen von strangmaterial |
-
1989
- 1989-11-27 DE DE3939128A patent/DE3939128A1/de not_active Withdrawn
-
1990
- 1990-11-23 DE DE90122387T patent/DE59003458D1/de not_active Expired - Fee Related
- 1990-11-23 ES ES90122387T patent/ES2047806T3/es not_active Expired - Lifetime
- 1990-11-23 EP EP90122387A patent/EP0431418B1/fr not_active Expired - Lifetime
- 1990-11-23 AT AT90122387T patent/ATE97038T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES2047806T3 (es) | 1994-03-01 |
EP0431418A2 (fr) | 1991-06-12 |
ATE97038T1 (de) | 1993-11-15 |
EP0431418A3 (en) | 1991-08-21 |
DE59003458D1 (de) | 1993-12-16 |
DE3939128A1 (de) | 1991-05-29 |
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