EP4497515A1 - Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage - Google Patents

Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage Download PDF

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Publication number
EP4497515A1
EP4497515A1 EP23187293.8A EP23187293A EP4497515A1 EP 4497515 A1 EP4497515 A1 EP 4497515A1 EP 23187293 A EP23187293 A EP 23187293A EP 4497515 A1 EP4497515 A1 EP 4497515A1
Authority
EP
European Patent Office
Prior art keywords
bending
counter
flat material
holding
counterholding
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.)
Pending
Application number
EP23187293.8A
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German (de)
English (en)
Inventor
Sylvio Matthäß
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.)
Variobend Asco GmbH
Original Assignee
Variobend Asco 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 Variobend Asco GmbH filed Critical Variobend Asco GmbH
Priority to EP23187293.8A priority Critical patent/EP4497515A1/fr
Priority to AU2024203646A priority patent/AU2024203646B2/en
Priority to US18/733,978 priority patent/US20250033103A1/en
Publication of EP4497515A1 publication Critical patent/EP4497515A1/fr
Pending legal-status Critical Current

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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/042—With a rotational movement of the bending blade
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/004—Bending sheet metal along straight lines, e.g. to form simple curves with program control
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/16—Folding; Pleating

Definitions

  • the present invention relates to a bending machine for bending flat material and a method for bending a standing seam on a flat material using the bending machine.
  • a bending machine in the sense of the present invention is also referred to as a folding machine.
  • the flat material that is bent with the bending machine according to the invention can be metallic sheets made of copper, aluminum, steel or other metals or metal alloys. It is also conceivable to bend non-metallic flat materials with the bending machine according to the invention, provided that such materials can be plastically deformed by bending.
  • Bending or folding machines for bending flat material are available in various designs, which differ according to the bending principle on which they are based.
  • the EP 2 014 381 B1 a bending machine in the form of a so-called swivel bending machine, in which an upper or a lower bending beam is swiveled about a bending axis to bend the flat material (hereinafter "swivel principle").
  • bending tools are Clamping cheeks are attached, whereby the bending tools can be moved linearly in feed planes.
  • Wedges are used to set the bending tools at an angle relative to a surface of the clamping cheeks.
  • the aforementioned wedges can in turn be moved linearly relative to the clamping cheeks.
  • the superposition of the linear movement of a bending tool in a feed plane on the one hand and the linear movement of a wedge relative to a clamping cheek on the other hand make it possible to move the respective bending tool along a variety of trajectories (hereinafter "wedge principle").
  • the known bending machine enables a so-called standing seam bending mode, according to which a standing seam to be produced on the flat material is closed or bent.
  • one of the two clamping cheeks for example the upper clamping cheek 22, is adjusted according to the Fig. 12 and 13 of the DE 20 2020 002 598 U1 from the clamping plane 32 of the flat material in order to be able to exert a counter-holding force against one leg of the not yet closed standing seam.
  • an upper bending tool 30 With the help of an upper bending tool 30, the other leg of the standing seam is then pressed so that the standing seam is bent or closed while being held in place by the upper clamping cheek 22.
  • the closed state of the standing seam is shown in Fig. 14 of the DE 20 2020 002 598 U1 shown.
  • the other leg of the standing seam is bent by a Fig. 12 and 13 of the DE 20 2020 002 598 U1 shown, second bending axis 202, which is spaced from the clamping plane 32.
  • the first bending axis 200 in the sense of DE 20 2020 002 598 U1 which in their Fig. 10 and 11 is the standard bending axis common in bending machines of the type in question, which is formed by one of the two clamping cheeks 22, 24 (namely by the upper clamping cheek 22 when bending upwards and by the lower clamping cheek 24 when bending downwards). Accordingly, the first bending axis 200 lies essentially in the clamping plane 32.
  • the clamping jaws of known bending machines must be designed in terms of their geometry in such a way that they have a standard bending axis or a first bending axis 200 in the sense of DE 20 2020 002 598 U1 Suitable geometries or radii must be provided regularly at the front ends or tips of the clamping cheeks.
  • a free design of the geometry of the clamping cheek solely from the point of view of avoiding impressions of the aforementioned type when holding against a leg of a standing seam is not possible, since the clamping cheek also has its standard main function, namely the function of forming the first bending axis 200 in the sense of DE 20 2020 002 598 U1 , must be able to exercise.
  • a clamping beam which has a standard bending axis or first bending axis in the sense of DE 20 2020 002 598 U1 should train.
  • a bending machine for bending flat material which comprises a first clamping jaw and a second clamping jaw for clamping the flat material to be bent in a clamping plane and a first bending jaw for bending the flat material.
  • the flat material can be metallic sheets or flat material made of non-metallic materials which can be plastically deformed by bending.
  • a second bending beam for bending the flat material in addition to the first bending beam in a manner known per se.
  • the bending machine according to the invention can accordingly be designed as a so-called single bender (there is only one bending beam for bending the flat material either upwards or downwards) or as a so-called double bender (there are two bending beams, with an upper bending beam for bending the flat material downwards and a lower bending beam for bending the flat material upwards).
  • the bending machine comprises a counterholding device for performing a counterholding function on the flat material to be bent, wherein the counterholding device is present both in addition to the first clamping cheek and the second clamping cheek and in addition to the first bending cheek and the possibly provided second bending cheek.
  • the counterholding device has a counterholding element that can be moved back and forth between a parking position and a counterholding position. In the parking position, the counterholding element is arranged away from the flat material to be bent and the counterholding function cannot be performed.
  • the counterholding element In the counterholding position, the counterholding element can be in contact with the flat material to be bent and its counterholding function can be performed in such a way that it can counteract a bending force that is applied to the flat material by means of the first bending beam when the flat material is bent about a bending axis that is spaced from the clamping plane.
  • the advantage of the bending machine according to the invention is that the design of the counterholding element of the counterholding device can be aligned exclusively to the requirements of the counterholding itself, completely unaffected by the geometric requirements of the two clamping cheeks.
  • This not only allows the counterholding force to be distributed over as large an area as possible, but it also makes it possible to make the process of bending a standing seam that is not yet completely closed more mechanically stable, since the leg of the standing seam against which the counterholding element is held can be supported over a larger proportion of its total area.
  • the two clamping cheeks have exclusively their conventional function of clamping the flat material to be bent in a clamping plane and a conventional standard bending axis or first bending axis in the sense of DE 20 2020 002 598 U1
  • the two clamping cheeks of the bending machine according to the invention are not involved in a counter-holding function, particularly in connection with the bending of a standing seam.
  • the bending machine according to the invention can be designed as a single bender or as a double bender. Furthermore, the bending machine according to the invention can Bending machine can be designed as a swivel bending machine according to the "swivel principle” mentioned above or as a bending machine according to the "wedge principle” mentioned above.
  • the counterholding device can advantageously be mounted on a machine frame of the bending machine.
  • the machine frame can comprise a machine upper part and a machine lower part, which are movable relative to one another.
  • the counterholding device is preferably mounted on the machine upper part.
  • the counterholding element can advantageously have a counterholding surface and/or a counterholding line for contact with the flat material to be bent.
  • the counterholding line can be designed to be curved in such a way that the counterholding function causes mechanical stabilization of a standing seam that is not yet completely closed during the process of bending it.
  • the counterholding element is preferably designed as an elongated counterholding strip.
  • the counterholding surface can then be designed, for example, as an elongated rectangular surface.
  • the counterholding device advantageously comprises at least one support arm to which the counterholding element is fastened so that it can be carried by it.
  • the counterholding device comprises a plurality of support arms which jointly carry the counterholding element at a plurality of spaced-apart locations.
  • the at least one support arm can be moved back and forth along a guide device between a first end position and a second end position.
  • the first end position corresponds to the parking position of the counterholding element and the second end position corresponds to the counterholding position of the counterholding element.
  • the guide device enables the support arm to move transversely to a longitudinal direction of the bending machine.
  • the counterholding device comprises an adjusting device for adjusting a relative position of at least the second end position of the support arm relative to the guide device.
  • the adjusting device it is at least possible to adjust the support arm in its second end position to be in a stop position which is defined by a stop of the guide device.
  • the adjustment device basically makes it possible to adjust the spatial position of the counterholding position of the counterholding element within the scope of an available guide path of the guide device.
  • the relative position of the second end position of the support arm relative to the guide device can be adjusted in such a way that the second end position is still in front of the stop position.
  • the first end position and the second end position of the support arm mark the two end points of its movement path along the guide device, between which the support arm can be moved back and forth when the counterholding element is moved between the parking position and the counterholding position.
  • the support arm is preferably in the aforementioned stop position.
  • the stop can advantageously be adjustable relative to the machine frame or to the machine top.
  • adjusting means are provided for adjusting the stop, so that a spatial position of the counterholding element in its counterholding position can be adjusted with the support arm in the stop position.
  • the guide device comprising the stop it is conceivable to design the guide device comprising the stop to be adjustable relative to the machine frame or to the machine top.
  • the adjusting means are designed such that the entire guide device can be adjusted relative to the machine frame or to the machine top by actuating them.
  • the adjustment device can advantageously be a conventional turnbuckle. This enables simple and at the same time precise adjustment of the relative position of the second end position of the support arm relative to the guide device, particularly when the second end position of the support arm is still in front of the stop position.
  • the guide device can advantageously be designed as a slotted guide and comprise at least one guide plate which is fastened to the machine frame or to the upper part of the machine.
  • the guide device designed as a slotted guide preferably has two guide plates and the support arm is arranged at least partially between the guide plates for guiding the support arm between the first end position and the second end position.
  • the at least one guide plate or the support arm can have two sliding guide tracks, in particular two elongated holes, for defining a sliding guide path. At least two sliding blocks are then attached to the support arm or to the at least one guide plate, each of which is positively guided in one of the two sliding tracks. Accordingly, the support arm can be moved in a spatially defined orientation along the sliding guide path between its first end position and its second end position.
  • the guide device can also be designed as a track guide with at least one track rail that is attached to the machine frame or to the machine head, with the support arm being movable like a carriage along the track rail between its first end position and its second end position.
  • the track rail can be curved in coordination with the feed movement of the counterholding element from its parking position to its counterholding position.
  • the track guide is then a curved track guide.
  • the counterholding device can have at least one drive element for moving the support arm.
  • the drive element can be, for example, an electric servo motor, a hydraulic cylinder or a pneumatic cylinder.
  • the aforementioned adjustment device can advantageously be arranged in a force transmission path between the drive element on the one hand and the support arm on the other hand in such a way that it itself participates in the force transmission between the drive element and the support arm. This saves space and money by eliminating the need to provide a separate adjustment device that would be present in addition to the elements of the force transmission path.
  • the bending machine has several, ie two or more, support arms, which jointly support the counterholding element.
  • the counterholding device comprises a shaft, at least one first lever, which is connected to the shaft in a rotationally fixed manner, and several, ie two or more, second levers, each of which is connected to the shaft in a rotationally fixed manner and each of which is assigned to one of the several support arms.
  • the first lever is operatively connected to the drive element at a point spaced from the shaft
  • the second levers are each operatively connected to the respective support element at a point spaced from the shaft.
  • the aforementioned adjustment device can be arranged, for example, between the drive element and the first lever. It then enables a joint adjustment of the second end positions of the multiple support arms. It is preferred to assign each of the multiple support arms its own adjustment device for adjusting the relative position of at least the second end position of the respective support arm relative to the respective guide device.
  • the respective adjustment device can then be arranged, for example, between the respective second lever and the respective support arm. It then transfers the actuating force for moving the respective support arm from the respective second lever to the respective support arm.
  • the present invention also proposes a method for bending a standing seam on a flat material using a bending machine which has a first clamping cheek and a second clamping cheek for clamping the flat material to be bent in a clamping plane and a first bending cheek for bending the flat material
  • the bending machine comprises a counterholding device for exercising a counterholding function on the flat material to be bent, which is present in addition to the first clamping cheek and the second clamping cheek and has a counterholding element, wherein the counterholding element can be moved between a parking position in which it is arranged away from the flat material to be bent and the counterholding function cannot be exercised, and a counterholding position in which it can be in contact with the flat material to be bent and the counterholding function can be carried out in such a way that the counterholding element can counteract a bending force which is applied to the flat material by means of the first bending cheek when the flat material is bent about a bending axis which is spaced from the clamping plane.
  • Fig. 1 shows an embodiment of a bending machine 1 according to the invention for bending metallic or non-metallic flat material, which is designed as a so-called double bender with a first bending beam 4 arranged at the top and a second bending beam 22 arranged at the bottom.
  • the bending machine 1 could also be designed as a single bender with only one of the two bending beams 4 and 22.
  • the elongated bending beams 4 and 22 extend in the longitudinal direction L of the bending machine 1.
  • the machine operator stands in front of the bending machine 1 in a transverse direction Q of the bending machine 1, which runs perpendicular to the longitudinal direction L and horizontally.
  • the bending machine 1 has a total of six force application sections 23, with the aid of which bending forces can be applied to the bending beams 4 and 22 in a known manner in order to bend the flat material.
  • the force application sections 23 can transfer the bending forces to the bending beams 4 and 22 according to the "pivoting principle” mentioned at the beginning or according to the "wedge principle” mentioned at the beginning.
  • the design of the possible force transmission mechanisms in the force application sections 23 is sufficiently known to the person skilled in the art from the prior art and is therefore not explained further here.
  • the bending machine 1 shown with its six force application sections 23 is also referred to as a long bending machine.
  • bending machines of the type in question both in the form of double benders and in the form of single benders, always have two clamping jaws for clamping the flat material to be bent in a clamping plane.
  • Fig. 1 In its left area only a small part of a first clamping cheek 2, which is located above the clamping plane, can be seen.
  • a second clamping cheek 3, which is located below the clamping plane, is in Fig. 1 It is not recognizable. It is in the Fig. 7 to 12 to see.
  • the Fig. 2 to 6 show a counter-holding device 5 for performing a counter-holding function on the flat material to be bent (cf. Fig. 5 ) or individual components thereof (cf. Fig. 2 to 4 and 6 ).
  • a counterholding device 5 for carrying out the counterholding function on the flat material to be bent.
  • a counter-holding device 5 which is shorter than the one used in the bending machine 1 according to Fig. 1 is used.
  • it comprises a pneumatic cylinder 17, which acts as a drive element.
  • a drive rod 24 of the pneumatic cylinder 17 is articulated to a first lever 20, which in turn is connected in a rotationally fixed manner to a shaft 19.
  • Fig. 5 A total of four second levers 21 are arranged, each of which is connected in a rotationally fixed manner to the shaft 19.
  • the drive element can also be designed in the form of an electric servo motor or in the form of a hydraulic cylinder. As the length of the bending machine 1 in the longitudinal direction L increases, two or more drive elements can be arranged at a distance in the longitudinal direction L if required.
  • Fig. 6 In the detailed representation according to Fig. 6 is shown as an example how one of the second levers 21 is seated on the shaft 19 in a rotationally fixed manner.
  • the lever 21 At its end facing away from the shaft 19, the lever 21 is hinged to an adjustment device, which in the embodiment shown is designed as a known turnbuckle 18. The adjustment function of the turnbuckle 18 will be described later.
  • the turnbuckle 18 At its end facing away from the lever 21, the turnbuckle 18 is hinged to a support arm 10, which is designed flat in the manner of a plate.
  • a counter-holding element in the form of a counter-holding bar 6 is attached to the support arm 10 shown.
  • a retaining clip 7 is used for this purpose.
  • Fig. 5 the counter-holding bar 6 is carried or held by a total of four support arms 10.
  • Each of the support arms 10 is movable between a first end position and a second end position by means of a guide device.
  • the guide device is formed by a slotted guide and comprises two guide plates 11, 12, which are best positioned in Fig. 4 can be seen.
  • the guide plates 11, 12 are arranged parallel to one another and form a gap between them in which the respective support arm 10 is at least partially received.
  • each of the two guide plates 11, 12 has two guide tracks, for example in the form of two elongated holes 13, 14.
  • the support arm 10 has two sliding blocks on each of its sides, here in the form of two rotatably mounted sliding rollers 15, 16.
  • the sliding rollers 15, 16 have a Fig. 6
  • the groove can be seen in the figure, into which the contour edges of the slots 13, 14 can engage.
  • the Fig. 6 The support arm 10 shown is accordingly equipped with a total of four scenery rollers 15, 16, of which only three are visible.
  • the guide plates 11, 12 are firmly connected to a machine upper part 8 (see Fig. 1 , 2 and 3 ) which extends in the longitudinal direction L over the entire length of the bending machine 1.
  • the machine upper part 8 is in a known manner relative to the Fig. 1 marked machine base 9, so that the clamping cheeks 2, 3 can be moved towards each other in a known manner to clamp the flat material and away from each other to release the flat material.
  • the fixed connection of the guide plates 11, 12 with the machine upper part 8 is carried out by means of holders which are fastened on the one hand to the machine upper part 8 and on the other hand to the respective guide plate 11 or 12.
  • Holders 25 can be seen, which firmly connect the guide plate 12 to the machine head 8.
  • Corresponding holders are also available for fastening the guide plate 11 to the machine head 8, but are not shown in the drawings.
  • Fastening brackets 26 are used to fasten the holders 25 to the guide plates 11, 12, which are best shown in the Fig. 3 and 5 can be recognized.
  • the shaft 19 is supported in several shaft bearings 27. Some of these shaft bearings 27 are attached to the guide plates 11, 12. Others of these shaft bearings 27 are firmly connected to the machine upper part 8 by means of fastening flanges 28.
  • the pneumatic cylinder 17 is supported on a support element 29, which here is designed as an elongated square profile.
  • the support element 29 is in turn attached to the machine upper part 8.
  • the entire counter-holding device 5, which is in Fig. 5 can be moved together with the machine upper part 8.
  • the support element 29, the fastening flanges 28 (see Fig. 2 to 4 ), the shaft bearings 27, the guide plates 11, 12 and the fastening angles 26 are not movable at all relative to the machine upper part 8.
  • Components of the counterholding device 5 that are movable relative to the machine upper part 8 are the pneumatic cylinder 17 (slight swivel movement), the drive rod 24, the first lever 20, the shaft 19 (only rotary, not translatory), the second lever 21, the turnbuckles 18, the support arms 10 with their guide rollers 15, 16 and the counterholding bar 6.
  • Fig. 7 and 8 show sectional and side views in the direction of arrows AA in Fig. 2 For reasons of graphic clarity, the Fig. 7 and 8 those parts are omitted which have no significance for the functionality to be described.
  • Fig. 7 shows one of the support arms 10 in a first end position, in which it is bent according to the bent course of the slots 13, 14 in Fig. 7 furthest to the right and furthest up.
  • the counter-holding bar 6 In the first end position of the support arm 10, the counter-holding bar 6 is in a parking position in which it is arranged horizontally away from a flat material F to be bent and cannot perform a counter-holding function on the flat material F. In its parking position, the counter-holding bar 6 is particularly separated from the front or in Fig. 7 left ends of the clamping cheeks 2, 3.
  • the clamping cheeks 2, 3 can thus perform their conventional clamping function without hindrance, in which they clamp the flat material F between them in a clamping plane E and thereby hold it securely for planned bending operations.
  • Fig. 7 the upper clamping jaw 2 must be moved downwards to clamp the flat material F in the clamping plane E.
  • Fig. 8 is the one in Fig. 7
  • the support arm 10 shown in the drawing is shown in a second end position, in which it is bent according to the bent course of the slots 13, 14 in Fig. 8 is located furthest to the left and furthest down.
  • the support arm 10 is moved from its Fig. 7 shown first end position into its Fig. 8
  • the counter-holding bar 6 has moved from its Fig. 7 shown parking position into one in Fig. 8 shown counter-holding position.
  • the counter-holding bar 6 can come into contact with or stand on the flat material F to be bent and support it during a bending process.
  • Fig. 8 It is shown how the counter-holding strip 6 from the right holds against an already completely bent or completely closed standing seam of the flat material F. In the counter-holding position according to Fig. 8 the counter-holding bar 6 can thus perform its counter-holding function as intended.
  • a method for bending a standing seam on the flat material F using the bending machine 1 according to the invention is illustrated.
  • the bending machine 1 is designed as a double bender, it also has the Fig. 1 lower bending beam 22, which is visible in the Fig. 9 to 12 was omitted from the drawing.
  • the bending beams 4, 22 can have separate bending segments at their ends that come into contact with the flat material F during bending, and possibly additional bending segments that are detachably mounted at these ends. Such bending segments or additional bending segments are not present in the embodiment shown and in the Fig. 9 to 12 therefore not shown.
  • clamping cheeks 2, 3 can, if required, have separate clamping segments at their ends which come into contact with the flat material F when clamped in the clamping plane E, in a known manner, which are detachably mounted at these ends.
  • Such clamping segments are also not present in the embodiment shown and in the Fig. 9 to 12 therefore not shown.
  • Fig. 9 The flat material F is shown in a pre-bent state, in which it has an open, ie not yet bent, standing seam.
  • Fig. 9 In order to achieve the state shown for the flat material F, it was bent twice in a manner known per se. To produce a leg S 2 , a bend of 135° from top to bottom was first made using the bending beam 4. Then - after moving the flat material F within the clamping plane E - a leg S 1 was produced using the bending beam 4 shown in Fig. 9 not shown, lower bending beam 22, another bend by 90° from bottom to top. In the course of these two bending processes, the Fig.
  • the process for bending the standing seam consists in bending the leg S 2 anti-clockwise by 45° in the direction of the leg S 1.
  • the bending axis B is located in the known manner at the Fig. 9 upper tip of the standing seam, i.e. essentially in the intersection line of the legs S 1 and S 2 .
  • this bending axis B is not located in the clamping plane E, but is spaced upwards from it essentially by the length of the leg S 1 .
  • the pneumatic cylinder 17 is actuated in such a way that it extends its drive rod 24 and moves the lever 20 into its Fig. 8
  • the counter-holding bar 6 held by the support arms 10 moves from its Fig. 7 shown parking position into its Fig. 8 shown counter-holding position.
  • the counterholding element consists of an elongated counterholding bar 6 with a rectangular cross-section, which is best suited to the Fig. 9 to 12 can be seen.
  • the counter-holding bar 6 is firmly connected to the respective support arm 10 via the retaining clip 7.
  • the counter-holding bar 6 rests against the leg S 1 with the short side of its rectangular cross-section from the right. Accordingly, the counter-holding bar 6 rests against the leg S 1 along a flat support band, the width of which here corresponds to the length of the short side of the rectangle, over the entire length of the standing seam running in the longitudinal direction L of the bending machine 1.
  • the short side of the rectangular cross-section of the counter-holding strip 6 can also be made longer than shown in the present embodiment. This would then result in a wider, flat contact strip which Counter-holding force is distributed over an even larger area and thus even better for preventing unwanted marks on the Fig. 9 right side of the leg S1. Since the formation of a flat contact band is independent of the overall geometry of the cross section of the counter-holding strip 6, the cross section of the counter-holding strip 6 can of course also have a cross-sectional shape that deviates from a rectangle, for example a square shape, triangular shape, trapezoidal shape, hexagonal shape or the like.
  • the bending beam 4 is first released from its Fig. 9 shown position in the Fig. 10 In this bending start position, the bending beam 4 is positioned as shown in Fig. 10 shown on the leg S 2. A bending force is not yet exerted on the leg S 2 in the initial bending position of the bending beam 4.
  • the bending beam 4 is then further inserted into the Fig. 11 During the movement from the position shown in Fig. 10 shown bending start position to the one in Fig. 11 In the intermediate position shown, the bending beam 4 applies a bending force to the leg S 2 , which bends it around the bending axis B in an anti-clockwise direction in the direction of the leg S1.
  • the bending beam 4 is finally moved further until it reaches its Fig. 12
  • the bending end position shown is reached, in which the standing seam is completely bent or closed.
  • the overlapping length sections of the legs S 1 and S 2 then lie essentially against each other or run essentially parallel to each other.
  • Fig. 12 The finished standing seam can be seen. It can also be seen at the bottom left in Fig. 7 and 8 to see.
  • the bending force applied by the bending beam 4 to the leg S 2 tends to bend the other leg S 1 clockwise.
  • the clamping cheeks 2 and 3 can be designed in the bending machine 1 as in conventional bending machines or long bending machines, which have long been known from the state of the art.
  • the geometry of the counter-holding bar 6, in particular the geometry of the contact surface or a contact line between the counter-holding bar 6 and the leg S 1 can be designed exclusively according to the needs of the counter-holding function.
  • the support arms 10 are in their respective second end position according to Fig. 8 in a stop position.
  • the cam rollers 15, 16 rest on stops 30, 31, which are in the Fig. 3 and 7 are marked and are subject to the Fig. 7 and 8 left ends of the elongated holes 13, 14.
  • the spatial position of the second end position of the respective support arm 10 is determined by the maximum stroke of the drive rod 24 of the pneumatic cylinder 17.
  • the distance between the lever 21 and the support arm 10 (cf. Fig. 6 ) can be changed or adjusted such that the link rollers 15, 16 rest against the stops 30, 31 in the second end position of the respective support arm 10 and are pressed against the stops 30, 31 with a certain stop force.
  • the stop force can thus be adjusted by turning the turnbuckle 18 depending on the counter-holding forces to be applied in each individual case.
  • the counter-holding bar 6 is thus held in its counter-holding position in a particularly spatially stable manner over its entire length during the counter-holding.
  • the adjustment device which in the embodiment shown is designed as a turnbuckle 18, makes it possible to set such a second end position of the respective support arm 10 in which it does not assume its stop position, but after the maximum stroke of the drive rod 24 is already at a position before reaching the stop position.
  • the cam rollers 15, 16 then do not rest on the stops 30, 31 and consequently have no contact with them.
  • the stop position of the respective support arm 10 is provided as the second end position
  • the spatial position of the counter-holding bar 6 in its counter-holding position is determined by the stop position.
  • the relative position of the counter-holding position relative to the stop position cannot be changed by means of the turnbuckle 18.
  • the shaft bearings 27, the shaft 19 and the guide plates 11, 12 can be attached to the upper part of the machine 8 in such a way that they can be adjusted relative to the latter.
  • adjusting means in the form of adjusting screws can be provided on the ends of the guide plates 11, 12 facing away from the counter-holding bar 6 and/or on the shaft bearings 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP23187293.8A 2023-07-24 2023-07-24 Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage Pending EP4497515A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP23187293.8A EP4497515A1 (fr) 2023-07-24 2023-07-24 Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage
AU2024203646A AU2024203646B2 (en) 2023-07-24 2024-05-30 Bending machine for bending flat material, and method for bending shut a standing fold in a flat material using the bending machine
US18/733,978 US20250033103A1 (en) 2023-07-24 2024-06-05 Bending machine for bending flat material, and method for bending shut a standing fold in a flat material using the bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23187293.8A EP4497515A1 (fr) 2023-07-24 2023-07-24 Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage

Publications (1)

Publication Number Publication Date
EP4497515A1 true EP4497515A1 (fr) 2025-01-29

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EP23187293.8A Pending EP4497515A1 (fr) 2023-07-24 2023-07-24 Machine de pliage pour plier un matériau plat et procédé pour plier un pli debout sur un matériau plat au moyen de la machine de pliage

Country Status (3)

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US (1) US20250033103A1 (fr)
EP (1) EP4497515A1 (fr)
AU (1) AU2024203646B2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL449532A1 (pl) * 2024-08-24 2026-03-02 Piotrowski Hubert Piotrowski Maszyny I Narzędzia Dekarskie Przymiar do formowania podwójnego rąbka stojącego z blachy i sposób działania przymiaru

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB626805A (en) * 1947-07-24 1949-07-21 Briggs Motor Bodies Ltd Improvements in and relating to machines for forming bends or folds in sheet metal
CH688646A5 (de) * 1994-02-22 1997-12-31 Remo Trunz Einrichtung zum Formen von Profilflanschen.
US20100077821A1 (en) * 2008-10-01 2010-04-01 Formtek, Inc. Duct making apparatus and method
EP2014381B1 (fr) 2007-07-13 2012-11-07 Reinhard Franze Plieuse de tôles, de préférence machine à entraînement hydraulique et son procédé de fonctionnement
EP2569108B1 (fr) * 2010-05-12 2014-03-12 ThyssenKrupp Steel Europe AG Procédé de pliage et appareil de pliage
US9517499B2 (en) * 2014-05-23 2016-12-13 Joseph T. Marshall S-lock flashing member forming apparatus
DE102018000344B3 (de) 2018-01-17 2019-05-23 Nikolaus Franz Duscher Biegemaschine, Biegeeinheit, elektronische Steuereinrichtung und Verfahren zum Biegen eines Werkstücks aus Flachmaterial
DE202020002598U1 (de) 2020-06-15 2020-07-06 EVOBEND GmbH Biegemaschine zum Biegen eines Werkstücks aus Flachmaterial und Steuereinheit für eine solche Biegemaschine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB626805A (en) * 1947-07-24 1949-07-21 Briggs Motor Bodies Ltd Improvements in and relating to machines for forming bends or folds in sheet metal
CH688646A5 (de) * 1994-02-22 1997-12-31 Remo Trunz Einrichtung zum Formen von Profilflanschen.
EP2014381B1 (fr) 2007-07-13 2012-11-07 Reinhard Franze Plieuse de tôles, de préférence machine à entraînement hydraulique et son procédé de fonctionnement
US20100077821A1 (en) * 2008-10-01 2010-04-01 Formtek, Inc. Duct making apparatus and method
EP2569108B1 (fr) * 2010-05-12 2014-03-12 ThyssenKrupp Steel Europe AG Procédé de pliage et appareil de pliage
US9517499B2 (en) * 2014-05-23 2016-12-13 Joseph T. Marshall S-lock flashing member forming apparatus
DE102018000344B3 (de) 2018-01-17 2019-05-23 Nikolaus Franz Duscher Biegemaschine, Biegeeinheit, elektronische Steuereinrichtung und Verfahren zum Biegen eines Werkstücks aus Flachmaterial
DE202020002598U1 (de) 2020-06-15 2020-07-06 EVOBEND GmbH Biegemaschine zum Biegen eines Werkstücks aus Flachmaterial und Steuereinheit für eine solche Biegemaschine

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AU2024203646A1 (en) 2025-02-13
AU2024203646B2 (en) 2025-06-12
US20250033103A1 (en) 2025-01-30

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