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EP1393831B1 - Appareil pour plier des profils creux - Google Patents

Appareil pour plier des profils creux Download PDF

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Publication number
EP1393831B1
EP1393831B1 EP03015669A EP03015669A EP1393831B1 EP 1393831 B1 EP1393831 B1 EP 1393831B1 EP 03015669 A EP03015669 A EP 03015669A EP 03015669 A EP03015669 A EP 03015669A EP 1393831 B1 EP1393831 B1 EP 1393831B1
Authority
EP
European Patent Office
Prior art keywords
bending
hollow
dolly
support
jaw
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
Application number
EP03015669A
Other languages
German (de)
English (en)
Other versions
EP1393831A3 (fr
EP1393831A2 (fr
Inventor
Peter Gerlich
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.)
Bystronic Lenhardt GmbH
Original Assignee
Bystronic Lenhardt GmbH
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
Application filed by Bystronic Lenhardt GmbH filed Critical Bystronic Lenhardt GmbH
Publication of EP1393831A2 publication Critical patent/EP1393831A2/fr
Publication of EP1393831A3 publication Critical patent/EP1393831A3/fr
Application granted granted Critical
Publication of EP1393831B1 publication Critical patent/EP1393831B1/fr
Anticipated expiration legal-status Critical
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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
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • 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
    • B21D7/022—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment over a stationary forming member only

Definitions

  • the invention relates to a device having the features specified in the preamble of claim 1.
  • a device is from the EP 0 483 044 A1 known.
  • the known device is used for bending hollow profile bars to spacer frame for insulating glass panes.
  • the hollow profile bars have two parallel flanks and an inner wall and an outer wall, which connect the flanks together. In particular, it is about so-called box sections, which should be bent, as long as the hollow profile bars do not contain a granular desiccant, which must contain spacer frame in insulating glass.
  • the device has a frame which carries a bending tool.
  • the bending tool has a bending cheek, which is pivotable about a pivot axis and acts to bend on the outer wall of the hollow profile rod.
  • the bending tool also includes a Biegewiderlager, around which the hollow profile bar is bent, and a support which is disposed on the side facing away from the starting position of the bending cheek side of the pivot axis of the bending cheek and supports the outer wall of the hollow profile bar, so that its lying on the relevant side of the bending support leg can not escape while the limb lying on the other side of the bending support is bent.
  • the bendable abutment is to mark the position at which the hollow profile bar is bent, impress the inner wall of the hollow profile bar and cause the hollow profile bar to assume a predetermined shape on its inner wall at the bending point.
  • Biegewiderlager consists of two abutment parts, which each have the shape of a rivet.
  • the two abutment parts are coaxially arranged so that their two heads face each other. Their mutual distance is changeable in order to be able to adjust them to different width hollow profile bars.
  • one abutment part is fastened to a stationary guide jaw and the other abutment part is fixed to a displaceable guide jaw, which lies parallel to the stationary guide jaw and whose distance from the stationary guide jaw is variable.
  • These guide jaws serve on the one hand to guide the hollow profile rod while it is fed to the bending tool, and on the other hand serve to prevent buckling of the flanks of the hollow profile rod during bending.
  • a device for bending hollow profile strips which has a bending elastic bearing which can be pivoted by means of a linear motor about an axis parallel to the bending axis.
  • the bending elastic bearing of this device is optionally formed as a rotatable roller or a finger-like slider with a rounded sliding surface.
  • the present invention is based on the object, compared with the EP 0 771 597 B1 to provide a simpler device, which on the one hand allows the hollow profile bar to better lead to the beginning of the bending process and during the bending process and release it after the bending process so far that it can be advanced through the bending tool and finally removed from the device.
  • the invention solves the problem by a special design of the two-part bending spider, by this by means of its own drive about the pivot axis of the bending beam or to an adjacent and parallel to her axis, but preferably about the pivot axis of the bending cheek, is pivotable and that the two abutment parts with respect to their pivot axis have a eccentric shape in such a way that the bending abutment of the plane in which the bending cheek and the support are aligned (which is also the Conveyor on which the hollow profile bars move during the feed with its outer side), at the beginning of the bending process has a distance which is equal to or smaller than the height of the hollow profile bar, after the bending process, in which the bending support is pivoted with, but has a distance , which is greater than the height of the hollow profile strip.
  • the bending support is independent of the bending cheek pivot so that it remains after the bending operation when the bending beam is moved back to its original position in its deflected position or even further pivoted to an end position can be, in which the hollow profile rod without hindrance and without touching the bending support, can be advanced over the bending beam away until the next bending point. Only then is the flexural deflector swung back to its original position, in which it rests against the inner wall of the hollow profile rod and this preferably already before the beginning of the bending process something impresses and thus clearly marks the bending point.
  • the invention achieves with extremely simple means that the bending abutment fully fulfills its abutment task during the bending process, but is ineffective when advancing the hollow profile rods.
  • the inner wall of the hollow profile bar which is clearly visible as the only wall later in the insulating glass, remains in this way free from scratches and other grinding marks, which are particularly disturbing when the surface of the hollow profile bar is shiny or painted.
  • a simple compressed air cylinder is sufficient. This one can do that be controlled that he presses at the beginning and during the bending process, the bending abutment against the hollow profile rod and thus against the bending cheek, whereby the hollow profile rod is clamped between Biegewiderlager and bending cheek and the bending cheek performs the bending operation by overcoming the force exerted by the compressed air cylinder counterforce.
  • the pressure medium cylinder can be depressurized or, better still, reversed, so that it is pivoted further into an end position in which it no longer touches the hollow profile rod during the advance.
  • the bending abutment is pivoted back by pressing the air cylinder in its initial position.
  • the bending abutment or one of its parts is arranged at the tip of a counter-holder opposite the bending cheek, which is designed for application to the inner wall of the hollow-section bar.
  • Such an anvil not only facilitates the handling of the counter-abutment, but can also form a clamp together with the bending cheek, in which the hollow profile bar can be temporarily fixed as needed.
  • the inner wall of the hollow profile bar facing surface of the counter-holder is preferably flat.
  • One way to clamp the hollow profile bars is preferably also provided on the opposite side of the pivot axis, in the vicinity of the support, where preferably a rear jaw and a front jaw are provided, which are intended for clamping the flanks of the hollow profile bar, wherein the rear Jaws stationary and the front jaws to be designed to be displaceable.
  • the rear jaw limits the pivoting movement of the bending cheek.
  • the rear jaw and the counter-holder are wedge-shaped, wherein the wedge tip in each case points to the bending support bearing and the wedge surfaces are arranged and designed such that Finally, the wedge surface of the counter-holder by pivoting the counter-holder abuts the rear jaws and there finds its final position, wherein the stop is preferably flat.
  • the wedge angle of the counter-holder and the rear jaw should be chosen so that they are together less than 50 °, in particular less than 30 °, so that correspondingly large bending angles that exceed 90 °, are possible.
  • two types of hollow profile bars are common. Most often so-called box sections are used, in which the inner wall extends at right angles from mutually parallel flanks of the hollow profile bar and the outer wall runs in a central region parallel to the inner wall and is connected on both sides via inclined surfaces with the flanks.
  • the indications "inside” and "outside” are here derived from the finished bent spacer frame: The inner wall faces into the interior of the insulating glass pane; the outer wall faces in the opposite direction.
  • flanks on the inner wall wherein the distance between the inner wall and the outer wall is usually smaller than in box sections.
  • This type of profile in which the flanks protrude beyond the inner wall, is also referred to as a bar profile.
  • Bar profiles have the advantage over box profiles that their inner wall has to be less deformed during bending because it is closer to the "neutral phase”.
  • Bar profiles are usually bent after being filled with a granular desiccant, which the spacer frames must contain before being installed in the insulating glass pane.
  • the invention is particularly suitable for bending hollow section bars that are still empty, especially for those with box sections. When bending box sections, a bending abutment has proven in which the abutment parts in a first peripheral portion have a predominantly cylindrical lateral surface with a radius of 2 mm to 3 mm, in particular 2.5 mm.
  • the bending abutment acts only on the inner wall, but not on the flanks of the hollow profile bar when bending, it is up to the width of the hollow profile bars adapted so that its width is at least twice the wall thickness of the hollow profile bars smaller than the width of the hollow profile bars.
  • the distance between the two bending-resistant parts can be changed from one another, wherein the rear bending-resistant part is expediently not displaceably arranged, but lies in the alignment of the rear clamping jaw, which is located in the vicinity of the support.
  • the front abutment part is adjustable in the direction of the pivot axis, best by coupling with an undeliverable on the front edge of the hollow profile bar jaws, so that no separate drive is required for adjusting the front Biegewiderlagermaschines.
  • a separate clamping device in the region of the pivot axis is particularly useful because it can be avoided bulging of the flanks in the immediate corner region of the hollow profile bar to be bent, at a point where the tendency to bulge is greatest.
  • This separate clamping device, but at least their jaws moving the clamping are preferably pivotable with the flexural abutment or with the bending cheek to minimize the friction between the jaws and the flanks of the hollow profile bar during the bending process.
  • the pivotability of the rear jaw, which is coupled to the bending abutment, is most easily achieved by the fact that it is taken during pivoting from the bending abutment or from the anvil, on which the bending abutment is located.
  • the associated front jaw and the thus coupled front abutment part can also be taken from the rear abutment part or from the anvil by connecting them by a driver.
  • abutment parts As an eccentric shape for the abutment parts is particularly suitable one in which a first peripheral portion is cylindrical and a second Circumferential section is flat, in particular flat or even concave, wherein the extent to which the hollow profile rods can be released by pivoting the bending spine, is particularly large when both peripheral portions lie on one and the same side of the pivot axis.
  • the bending and abutment are interchangeably mounted on a pivotable carrier in order to replace it in case of wear or in the case of bending tasks for which another bending abutment is cheaper.
  • Such another application would be e.g. the bending of already filled with granular desiccant bar profiles, for which an undivided bending brace is cheaper.
  • a split bending abutment whose abutment parts act in the vicinity of the flanks of the hollow profile bars on the inner wall of the profile.
  • the invention is particularly suitable for the bending of hollow profile bars, which are still empty, in particular of box sections.
  • Figure 1 shows a simplified overall view of the device with a frame 1, with a supported by the frame, backwardly inclined support wall 2, with a provided in the lower region of the support wall 2 horizontal conveyor track 3, along which to be bent hollow profile bars in the conveying direction 4 a bending tool 5 are supplied.
  • a feed device is provided, which in the exemplary embodiment preferably consists of two endless, mutually parallel, synchronously driven toothed belts 6 and 7, which are guided over pairs of gears 8 and 9 and 8a and 9a, of which the front gears 8 , 8a are driven.
  • the toothed belts 6 and 7 are variable in their mutual distance, in particular by moving the upper toothed belt 7 together with its gears 8 and 9.
  • further tools can be arranged, in particular a saw for cutting the Hollow profile bars, a labeling device for labeling the hollow profile bars, and a connecting device for connecting successive sections of hollow profile bars.
  • a connection device consists for example of a stationary pair of jaws 10 and a movable along the conveyor track 3 jaw pair 11.
  • the legs of the hollow profile bars to be bent are bent in the illustrated device, in which the conveying direction 4 extends from left to right, counterclockwise, wherein the bent legs can be supported on the support wall 2 and guided on it.
  • the direction of conveyance 4 from left to right is arbitrary; it could also be from right to left; In this case, the hollow profile bars would be bent clockwise.
  • the conveyor track 3 is not formed as a continuous continuous track, but consists of a series of partially different elements which support the hollow profile bars both parallel to the support wall 2 and in a plane perpendicular thereto and enforce a straight, horizontal trajectory of the hollow profile bars.
  • These elements, which define the path of movement of the hollow profile rods include, among other things, the toothed belts 6 and 7, the pairs of clamping jaws 10 and 11 and the bending tool 5, which is shown in more detail in FIG.
  • Essential components of the bending tool 5 are a bending beam 12, a cooperating with them counter-holder 13, a bending support 14 and a support 16 which is disposed on the same side of the hollow profile rod 20, such as the bending machine 12, based on the conveying direction 4 behind the bending cheek , These components are shown in Figure 2 in a view with a viewing direction perpendicular to the support surface 2, of the bipartite bending support bearing 14 but only the first rear abutment part 14a.
  • Both the bending beam 12 and its counter-holder 13 are pivotable about a relative to the bending deflection bearing 14 eccentrically lying, perpendicular to the support wall 2 pivot axis 18.
  • an electrical servomotor is preferably provided behind the plane of the support wall 2, which makes it possible to carry out predetermined pivoting angles particularly precisely.
  • the anvil 13 has no own pivot drive, it is taken from the bending beam 12 when it performs in the direction of arrow 19 pivotal movement.
  • the counter-holder 13 is pressed or pulled against the lying on the bending beam 12 section of the hollow profile rod 20, preferably by means of a pneumatic cylinder, which is not shown in the drawings and whose resistance is overcome by the drive motor of the bending beam 12.
  • a pneumatic cylinder which is not shown in the drawings and whose resistance is overcome by the drive motor of the bending beam 12.
  • a stop can be provided between the bending beam 12 and the anvil 13, the stop the approach of the counter-holder 13 to the bending beam 12 to a height the hollow profile bar 20 limits the same extent;
  • a stop can be formed, for example, by a turned into the counter-holder 13 and directed against the bending beam 12 screw.
  • the pressure acting on the counter-holder Druckmittlzylinder can be depressurized, so that the counter-holder remains in position, or the pressure cylinder can be reversed in its effective direction, so that the counter-holder in his 6 is pivoted in the end position shown in Figure 6, in which the bending support bearing 14 has the hollow profile bar 20 fully released.
  • the hollow profile bar 20 is supplied to the bending tool on the conveyor track 3 so that its outer wall 21 faces downwards and the bending beam 12 abuts that its mutually parallel flanks 22 parallel to the support wall 2 and that its inner wall 23 faces the counter-holder 13.
  • Both illustrated hollow profile rods 20 are box sections, for which the invention is particularly suitable. In principle, however, it is also suitable for bar profiles if they are to be bent while they are still unfilled.
  • the indications "inside” and “outside” are chosen with regard to the corner to be bent, which has an outer side and an inner side, so that the "inner wall” forms the inner side and the "outer wall” the outer side of the corner.
  • the support 16 is pivotable by means of a pressure cylinder, not shown, by means of a shaft 25 extending at right angles to the support wall 2.
  • the support 16 prevents the rear portion of the hollow profile bar from deflecting during flexing and aids in guiding it during feed.
  • the support 16 can be pivoted from the position shown in Figure 2, if necessary, something down; the bending beam 12 is in the starting position shown in Figure 2 or, if necessary, in a contrast, a little downwardly pivoted position; the anvil 13 is preferably located in the position shown in FIG. 6 during advancement of the hollow profile rod 20, in which the bending abutment 14 has its greatest possible distance from the plane 17, in which the hollow profile rod 20 facing surfaces of the support 16 and the bending beam 12 in their starting position aligned. Under these conditions, the hollow profile rod 20 is advanced by its feed device 6 to 8 between the bending support bearing 14 and the anvil 13 on one side and the support 16 and the bending beam 12 on the other side.
  • the hollow profile bar 20 is advanced until the point at which a corner is to be bent reaches the flexural deflector 14.
  • the correct position can be determined by a displaceable along the conveyor track 3 stop 27 ( Figure 1), on which the front end of the hollow section bar 20 abuts and is stopped. Thereafter, the support 16, if it was not yet in the plane 17, pivoted into this.
  • a stop 27 can the correct position but also be determined by software from given production data and feed data.
  • Spacer frames for insulating glass panes require flat, mutually parallel flanks 22 everywhere, even in the corner area. The parallelism and evenness must not be lost by bending the corner. In order to prevent bulging of the flanks 22 of the hollow profile rods 20 during bending, they are clamped on the flanks 22.
  • the means provided for this purpose are shown in the plan view shown in FIG. 3 with a view parallel to the support surface 2.
  • a support 32 is fixedly mounted, which interchangeably carries a fixed jaw 33, which faces the rear edge of the hollow profile bar , which is not shown in Figure 3.
  • the shaft 25 is mounted, which carries the support 16 and rotates.
  • the shaft 25 and the rod 24 are displaced for this purpose in their longitudinal direction, so that the second jaw 35 in the direction of the arrow 37 can be approximated to the jaw 33 and thus the preceding hollow profile bar 20.
  • the second jaw 35 also carries a jaw 38 ( Figure 3), which is rotatably mounted about the pivot axis 18 in a recess of the second jaw 35.
  • the rotatable jaw 38 forms together with one of the rear edge 22 of the hollow profile bar 20 facing further jaws 36, which is also rotatably mounted about the pivot axis 18 on an extension 12a of the bending beam 12, a second clamping device, with which the flanks 22 of the hollow profile bar in the can be clamped in the immediate vicinity of the pivot axis 18.
  • the jaws 36 and 38 are eccentrically mounted; they extend along the leg of the hollow profile bar 20 to be bent over a greater length than along his unbendable thigh.
  • the rear jaw 36 is taken by the anvil 13.
  • the front jaw 38 is entrained by a positive engagement of a provided on the anvil 13 driver 39 in a recess of the front jaw 38 of the anvil 13; the engagement is similar to a dovetail connection and remains shortened as the front jaw 38 enlarges its distance from the mounting wall 30.
  • the second, front abutment part 14b is, as best seen in FIG. 5, rotatably mounted in a recess 41 of the clamping jaw 35, for which purpose the front jaw 38 has on its rear side a pin 42a, which in a matching bushing 43a of the Jaw 35 engages.
  • the recess 41 is provided with an arcuate undercut 44 into which the jaw 38 engages with a corresponding circular arc-shaped projection 45, which extends approximately over a circumferential angle of 180 ° .
  • the front jaw 38 based on the view shown in Figure 5, rotated in a clockwise direction, whereby the engagement of the circular arc-shaped projection 45 is maintained in the circular arc-shaped undercut 44.
  • the front jaw 38 is taken during adjustment of the jaw 35 of this and moved into its clamping position on the hollow profile bar or moved out of the clamping position.
  • the front flexural damper 14b is bolted to the front jaw 38.
  • the unit formed thereby has a recess 47, in which the driver 39 engages positively. In this way, both abutment parts 14a and 14b are forcibly pivoted to the counter-holder 13.
  • Figure 5 shows in detail the contour of the nose 34 of the abutment parts 14a, 14b with a substantially cylindrical first peripheral portion 26a and a substantially planar second peripheral portion 26b.
  • the nose 34 keeps a distance from the jaw 38; this distance is at least twice the wall thickness of the hollow profile bar, so that it can be dented by the peripheral portion 26 a, without damaging the flanks 22.
  • the hollow profile bar 20 is first clamped between the various clamping devices. Thereafter, by bending the bending beam 12 of the bending operation can be performed, wherein the maximum bending angle is reached when the anvil 13 abuts the jaw 33.
  • the counter-holder 13 and the clamping jaw 33 are wedge-shaped, wherein the wedge tips are directed against the flexural abutment 14.
  • An inclined surface 28 of the counter-holder 13 and an inclined surface 29 of the clamping jaw 33 which lie on the side facing away from the conveyor track 3 of the counter-holder 13 and the jaws 33 are arranged so that the counter-holder 13 with its inclined surface 28th over the entire surface of the inclined surface 29 of the jaw 33 can strike, see Figure 6.
  • the flexural deflector 14 has a first peripheral portion 26a with a substantially cylindrical lateral surface and a second, flattened peripheral portion 26b, both of which lie on the same side of the pivot axis 18.
  • the distance of the first peripheral portion 26a of the bending support 14 from the plane 17, in which the hollow profile bar 20 facing surfaces of the bending beam 12 and the support 16 are aligned slightly smaller than the height of the hollow profile rod 20, so that the inner wall 23 before is dented the bending process, namely, when the counter-holder 13 and / or the bending beam 12 are pivoted to its position shown in Figure 2. At this point is then the center of the bend.
  • the release of the engagement of the bending support from the hollow section bar 20 is carried out with the simplest means and in particular ensures that the hollow profile bar 20 is not touched when advancing on its inner wall and there are no grinding marks that would be annoying especially for painted surfaces, because the inner wall of the hollow profile bar later in the insulating glass pane is clearly visible.
  • the hollow profile rod 20 can be clamped on both sides of the bending point, if necessary even on all sides.
  • a well-defined and-if desired-a greater tension can be exerted on the outer wall 21 and on the flanks 22 during bending than in the prior art, which promotes the avoidance of wrinkling in the region of the resulting corner and increases the quality of the bend.
  • the anvil 13 can be replaced together with the flexural abutment 14 and replaced by a filled with drying agent hollow profile rods special suitable arrangement of counter-holder, bending support and a support 16 opposite the clamping part, against which the support 16 can clamp the hollow section bar 20 and in which the flexural damper by a hinge-like connection of the counter-holder with the clamping part is formed.
  • a hinge-like design of the bending support makes this despite small dimensions particularly resistant to the larger forces occurring during the bending of filled hollow profile bars.
  • An example of such a bending tool is in German patent application 101 38 345.2 disclosed.
  • For the purpose of replacement of the anvil 13 has at its end remote from the pivot axis 18 a slot-like recess 46 which is open towards the end of the counter-holder 13.
  • a pin 49 and parallel thereto is in the support 57, a further axially parallel bore 50, which has a distance from the pin 49, which the distance of the bore 48th from the recess 46 corresponds.
  • a locking pin 52 In the bore 50 is a locking pin 52, which is secured by a resilient pressure piece 54 against moving out. After loosening the grub screw 54, the locking pin 52 can be pulled out and the Geumblehalter 13 abenommen. In this way, a lightning-fast tool change is possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Claims (25)

  1. Dispositif pour le pliage de barres profilées creuses (20), en particulier pour des cadres d'espacement destinés à des vitres isolantes, les barres profilées creuses (20) possédant deux flancs réciproquement parallèles (22), ainsi qu'une paroi interne (23) et une paroi externe (21) qui relient les flancs (22) l'un à l'autre, comprenant
    - un bâti (1) ;
    - un appareil de pliage (5) supporté par le bâti (1),
    - qui comporte une joue de pliage (12) qui est à même de pivoter autour d'un axe de pivotement (18), qui agit, pour le pliage, sur la paroi externe (21) de la barre profilée creuse (20) et qui possède une position de départ qu'elle adopte avant le pliage ;
    - qui présente une butée de pliage (14) orientée vers la paroi interne (23), autour de laquelle la barre profilée creuse (20) est pliée, et qui possède deux parties de butée de pliage (14a, 14b), dont l'écart réciproque peut être modifié ;
    - et qui présente un support (16) pour que vienne s'y appuyer la paroi externe (21) de la barre profilée creuse (20), qui est disposé sur le côté de son axe de pivotement (18) tourné vers la position de départ de la joue de pliage (12),
    caractérisé en ce que la butée de pliage (14) est à même de pivoter au moyen d'un entraînement propre autour de l'axe de pivotement (18) de la joue de pliage (12) ou bien autour d'un axe qui lui est voisin et qui lui est parallèle et en ce que les deux parties de butée (14a, 14b) possèdent, par rapport à leur axe de pivotement (18), une configuration de forme excentrique de telle sorte qu'elles possèdent un premier tronçon périphérique (26a) contre lequel vient s'appliquer la paroi interne (23) de la barre profilée creuse (20) au cours du processus de pliage et de telle sorte qu'elles possèdent un deuxième tronçon périphérique (26b) qui vient se raccorder directement au premier tronçon périphérique (26b), ledit deuxième tronçon pouvant être orienté, par pivotement de la butée de pliage (14) en direction de la paroi interne (23) de la barre profilée creuse (20) et, dans la position ainsi obtenue, étant écarté, par rapport au plan (17) dans lequel le côté du support (16) orienté vers la barre profilée creuse (20) et la joue de pliage (12) sont disposés à fleur l'un par rapport à l'autre, sur une distance supérieure à celle du premier tronçon périphérique (26a) dans sa position orientée en direction de ce plan (17).
  2. Dispositif selon la revendication 1, caractérisé en ce que la butée de pliage (14) est à même, de manière facultative, de pivoter également conjointement avec la joue de pliage (12), autour de son axe de pivotement (18).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la butée de pliage (14) ou une de ses parties (14a) est disposée à la pointe d'une contre-butée (13) opposée à la joue de pliage (12), la contre-butée étant réalisée pour venir s'appliquer contre la paroi interne (23) de la barre profilée creuse (20).
  4. Dispositif selon la revendication 3, caractérisé en ce que la surface de la contre-butée (13), tournée vers la paroi interne (23) de la barre profilée creuse (20), est de configuration plane.
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que la contre-butée (13) présente une configuration cunéiforme, la pointe du coin étant tournée vers la butée de pliage (14).
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le support (16) est à même de pivoter autour d'un axe (25) parallèle à l'axe de pivotement (18).
  7. Dispositif selon la revendication 6, caractérisé en ce qu'on prévoit, dans le voisinage du support (16), une mâchoire de serrage arrière (13) et une mâchoire de serrage avant (35) qui sont destinées à enserrer les flancs (22) de la barre profilée creuse (20), et en ce que la mâchoire de serrage arrière (33) et de configuration cunéiforme, la pointe du coin étant tournée vers la butée de pliage (14).
  8. Dispositif selon la revendication 7, caractérisé en ce que la surface cunéiforme de la contre-butée (13) peut être amenée, par pivotement de la contre-butée (13), en contact de grande étendue avec l'étendue de la mâchoire de serrage arrière (33), qui lui fait face.
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que l'angle cunéiforme formé par la contre-butée (13) et celui formé par la mâchoire de serrage arrière (33), pris ensemble, sont inférieurs à 50°, en particulier inférieurs à 30°.
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties de butée (14a, 14b), dans un premier tronçon périphérique (26a), possèdent une surface latérale principalement cylindrique.
  11. Dispositif selon la revendication 10, caractérisé en ce que, pour le pliage de barres profilées creuses (20) possédant une section transversale en forme de caisson (profilés en caisson), le rayon de la surface latérale du premier tronçon périphérique (26a) s'élève de 2 mm à 3 mm, en particulier à 2,5 mm.
  12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les deux parties de butée (14a, 14b) possèdent, dans leur premier tronçon périphérique (26a) qui est tourné, lors du pliage, vers la barre profilée creuse (20), un contour coïncident.
  13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les parties de butée (14a, 14b) possèdent, sur leur côté arrière qui se détourne de leur premier tronçon périphérique (26a), un deuxième tronçon périphérique aplati (26a).
  14. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier et le deuxième tronçon périphérique (26a) sont disposés sur le même côté de l'axe de pivotement (18).
  15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la butée de pliage (14) peut être remplacée.
  16. Dispositif selon la revendication 15, caractérisé en ce que la butée de pliage (14) est fixée de manière amovible sur un support (57) apte à pivoter autour de l'axe de pivotement (18) de la joue de pliage (12).
  17. Dispositif selon la revendication 16, caractérisé en ce que la contre-butée (13) possède, sur son extrémité qui se détourne de l'axe de pivotement (18), un évidement (46) ouvert sur cette extrémité, en ce qu'une broche parallèle à l'axe (49) fait saillie par rapport au support pivotant (57), la broche étant destinée à venir s'insérer dans l'évidement (46), et en ce que, pour fixer la butée de pliage (14) avec la contre-butée (13) sur le support pivotant (57), on prévoit des moyens (52) qui fixent en outre, de manière amovible, à un endroit éloigné de la broche (49), la contre-butée (13) au support pivotant (57).
  18. Dispositif selon la revendication 17, caractérisé en ce qu'on prévoit, pour la fixation de la contre-butée (13), conjointement avec la butée de pliage (14), une broche (52) ou une vis qui est guidée à travers la contre-butée (13) dans le support (57) apte à pivoter avec la joue de pliage (12) ou par rapport à la joue de pliage (12).
  19. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, dans la zone de l'axe de pivotement (18), on prévoit un deuxième dispositif de serrage (12a, 38) agissant sur les flancs (22) de la barre profilée creuse (20).
  20. Dispositif selon la revendication 19, caractérisé en ce que le deuxième dispositif de serrage (12a, 38) est à même de pivoter avec la butée de pliage.
  21. Dispositif selon la revendication 20, caractérisé en ce que la première partie de butée (14) est accouplée à une mâchoire arrière (36) du deuxième dispositif de serrage, l'autre partie de butée (14b) étant accouplée à une mâchoire avant (38) du deuxième dispositif de serrage, dont l'écartement peut être modifié par rapport à la mâchoire arrière (36) du deuxième dispositif de serrage.
  22. Dispositif selon la revendication 21, caractérisé en ce que les parties de butée (14a, 14b) sont accouplées de manière amovible aux mâchoires (36, 38).
  23. Dispositif selon la revendication 21 ou 22, caractérisé en ce qu'un tenon d'entraînement (39) est appliqué sur la contre-butée (13) et/ou sur la première partie de butée (14a) appliquée sur la première citée, tenon qui saisit la deuxième partie de butée (14) et/ou la deuxième partie (38) du deuxième dispositif de serrage, dont l'écartement peut être modifié, et qui les entraîne.
  24. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que, sur le côté de l'axe de pivotement (18), qui se détourne, dans la position de départ dudit axe, de la joue de pliage (12), on prévoit un troisième dispositif de serrage (33, 35) qui agit sur les flancs (22) de la barre profilée creuse (20).
  25. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un quatrième dispositif de serrage (40, 41) agissant sur les flancs (22) de la barre profilée creuse (20) est relié à la joue de pliage (12) tout en étant à même de pivoter avec cette dernière.
EP03015669A 2002-08-02 2003-07-18 Appareil pour plier des profils creux Expired - Lifetime EP1393831B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10236407A DE10236407B4 (de) 2002-08-02 2002-08-02 Vorrichtung zum Biegen von Hohlprofilstäben
DE10236407 2002-08-02

Publications (3)

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EP1393831A2 EP1393831A2 (fr) 2004-03-03
EP1393831A3 EP1393831A3 (fr) 2004-11-03
EP1393831B1 true EP1393831B1 (fr) 2007-09-26

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EP03015669A Expired - Lifetime EP1393831B1 (fr) 2002-08-02 2003-07-18 Appareil pour plier des profils creux

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EP (1) EP1393831B1 (fr)
AT (1) ATE374082T1 (fr)
DE (2) DE10236407B4 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312764A1 (de) * 1983-04-09 1984-10-18 Fr. Xaver Bayer Isolierglasfabrik Kg, 7807 Elzach Verfahren und vorrichtung zum biegen von abstandhalter-profilen fuer isolierglasscheiben
DK0459971T3 (da) * 1990-05-21 1994-04-05 Peter Lisec Fremgangsmåde og apparat til frembringelse af bukkede afsnit i hulprofillister
DK169909B1 (da) * 1990-10-26 1995-04-03 Bayer Isolierglasfab Kg Bukkemaskine
AT406236B (de) * 1995-10-31 2000-03-27 Lisec Peter Vorrichtung zum biegen oder krümmen von hohlprofilleisten
DE19733536C2 (de) * 1997-08-02 2001-10-11 Bayer Isolierglasfab Kg Biegevorrichtung mit einem Niederhalter für Hohlprofile
DE20113079U1 (de) * 2001-08-03 2001-11-29 Lenhardt Maschinenbau GmbH, 75242 Neuhausen Vorrichtung zum Biegen von Hohlprofilstäben
DE20112827U1 (de) * 2001-08-03 2001-12-20 Lenhardt Maschinenbau GmbH, 75242 Neuhausen Vorrichtung zum Biegen von Hohlprofilstäben

Also Published As

Publication number Publication date
DE50308268D1 (de) 2007-11-08
EP1393831A3 (fr) 2004-11-03
DE10236407A1 (de) 2004-02-26
EP1393831A2 (fr) 2004-03-03
DE10236407B4 (de) 2007-09-27
ATE374082T1 (de) 2007-10-15

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