EP0213667A2 - Procédé et appareil pour plier des pièces en tôle - Google Patents

Procédé et appareil pour plier des pièces en tôle Download PDF

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Publication number
EP0213667A2
EP0213667A2 EP86201380A EP86201380A EP0213667A2 EP 0213667 A2 EP0213667 A2 EP 0213667A2 EP 86201380 A EP86201380 A EP 86201380A EP 86201380 A EP86201380 A EP 86201380A EP 0213667 A2 EP0213667 A2 EP 0213667A2
Authority
EP
European Patent Office
Prior art keywords
work piece
frame
die
stop
arms
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.)
Withdrawn
Application number
EP86201380A
Other languages
German (de)
English (en)
Other versions
EP0213667A3 (fr
Inventor
Cornelis Hendricus Liet
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.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NL8502206A external-priority patent/NL8502206A/nl
Priority claimed from NL8503471A external-priority patent/NL8503471A/nl
Application filed by Individual filed Critical Individual
Publication of EP0213667A2 publication Critical patent/EP0213667A2/fr
Publication of EP0213667A3 publication Critical patent/EP0213667A3/fr
Withdrawn legal-status Critical Current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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/18—Advancing work in relation to the stroke of the die or tool by means in pneumatic or magnetic engagement with 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
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0281—Workpiece supporting devices

Definitions

  • the invention relates to a method for bending sheet-like work pieces in an apparatus comprising a die having a longitudinally extending groove, a stamp, a stop for determining the position of a work piece with respect to the die, clamping means for clamping a work piece and a frame for supporting the stop and the clamping means and being pivotable around a pivot axis substantially coinciding with the groove of the die, and to an apparatus for carrying out this method.
  • the invention aims to provide a method and apparatus of the above-mentioned kind, wherein these disadvantages are obviated in a simple manner.
  • the method according to the invention is characterized in that the frame is pivoted into a position extending obliquely downwardly from the pivoting axis and in that a work piece is picked up from a storage location by a lifting arm and is laid on the obliquely pivoted frame so that the work piece automatically shifts against the stop, whereafter the work piece is clamped in the position as determined by the stop and the frame is pivoted into a substantially horizontal position.
  • the frame is pivoted into the position extending obliquely downwardly from the pivoting axis and the bent work piece is removed from the frame and laid down at a discharge location by the lifting arm.
  • the apparatus according to the invention is provided with a main frame, a die having a longitudinally extending groove, a stamp, a stop for determining the position of a work piece with respect to the die, clamping means for clamping a work piece and a frame for supporting the stop and the clamping means and being pivot able around a pivot axis substantially coinciding with the groove of the die, and is characterized by a lifting arm for the work pieces pivotably connected with the main frame.
  • the lifting arm is supported by a carrying plate rotatably borne around a vertical axis in a holder.
  • this work piece can be taken up from the frame by the lifting arm and after an angular rotation along each angle desired can be laid down on the frame again. In this manner different sides of for example a rectangular work piece can be bent.
  • the lifting arm comprises a carrier movable upwards and downwards and provided with a plurality of nozzles connectable to a source of underpressure and being cardan suspended to pins of the carrier.
  • the frame may be provided with two clamping jaws each being carried by an arm, said arms being slidable longitudinally and laterally with respect to the die, wherein according to the invention the frame comprises a plurality of supporting arms extending laterally to the die for supporting a work piece, wherein a supporting arm is connected with each clamping jaw arm, while the remaining supporting arms are fixedly mounted to the frame between the clamping jaw arms. Thereby a stable supporting of the work piece is obtained.
  • the fixed supporting arms are provided with holding means for temporarily holding a work piece.
  • holding means for temporarily holding a work piece.
  • the apparatus comprises means for rotating a work piece around an axis lying substantially in the plane of the work piece.
  • Fig. 1 schematically shows a cross-section of an apparatus for bending sheet-like work pieces comprising a main frame 1 with two web plates 2 lying on both sides of the apparatus and only one of which being shown in fig. 1.
  • the main frame 1 further comprises a lower beam 3 and an upper beam 4 which is movable towards the lower beam 3 by means of two cylinder piston assemblies 5 one of which being shown in fig. 1.
  • the lower beam 3 and the upper beam 4 each are provided with a rotatably mounted carrier 6, said carriers each having a die part 7 with a longitudinally extending groove and a stamp part 8 with a line-shaped contact zone.
  • the die part 7 and the stamp part 8 of each carrier each can be rotated into a working position directed towards the other carrier 6.
  • the construction of this part of the apparatus is further disclosed in the above-indicated European patent application.
  • the apparatus further is provided with a frame 9, a top view of which is schematically shown in fig. 2.
  • the frame 9 is supported by the main frame 1 pivotably around a pivot axis by means of two arms 10 in a manner not further shown.
  • Both arms 10 are interconnected by a box beam 11.
  • two boxes 12 are mounted slidably supporting a support beam 13.
  • the support beam 13 is movable by screw spindles 14 which can be driven through drive belts 15 by a motor 16 supported on the box beam 11.
  • Two slide - blocks 17 are slidably mounted on the support beam 13, each of said slide blocks 17 carrying an arm 18 directed towards the die part 7 or the stamp part 8.
  • an arm 18 directed towards the die part 7 or the stamp part 8.
  • a clamping jaw 19 is mounted which can grip the side of a work piece.
  • a supporting arm 20 is mounted on each slide block 17 for supporting a work piece to be placed on the frame 9. Further two fixed supporting arms 21 are provided attached to the box beam 11. The upper sides of the supporting arms 20 and 21 lie in one plane and thus provide a stable support for a work piece to be placed on the frame 9.
  • the slide blocks 17 each have a lowered part 22, the upper surface of which lies in one plane with the upper sides of the supporting arms 20 and 21. With the clamping jaws 19 in the open position a work piece of big sizes may thus extend beyond the slide blocks 17 if required.
  • the boxes 12 each carry a guiding roller 23 running along a corresponding guide way 24.
  • Pivoting of the frame 9 is controlled by a control mechanism not shown which can be made in any desired manner.
  • the control takes place by means of a programmable control unit in response to the movement of the upper beam 4 with respect to the lower beam 3.
  • This movement can be measured in the usual manner by means of two potentiometers supported by the web plates 2, the movable contacts of which are connected with the respective ends of the upper beam 4.
  • the control unit is able to cause the frame 9 to follow the bending of the work piece so that no undesired bending of the work piece can take place and the work piece will be maintained in position continuously by the clamping jaws 19.
  • the apparatus further is provided with a lifting arm 25 by means of which the plate-shaped work pieces schematically indicated in fig. 1 by reference sign 26 can be taken up from a storage location 27 and can be laid down on the frame 9.
  • the lifting arm 25 is supported by a carrying plate 28 borne in a holder 30 rotatably around a vertical axis 29.
  • This holder 30 is suspended substantially in the centre of the apparatus by two support beams 31, only one of which is shown in fig. 1.
  • These support beams 31 each are pivotably connected by one end with a bearing roller 32 movable in a support rail 33.
  • the support rail 33 laterally extending with respect to the die part 7 or the stamp part 8 is mounted on the corresponding web plate 2.
  • the end of the support beam 31 connected with the bearing roller 32 is connected with an upward bracket 35 of the support rail 33 by a cylinder piston assembly 34. Further this end of the support beam 31 is connected with a second bearing roller 37 by a rod 36 extending in the support rail 33. A second cylinder piston assembly 39 is provided between this second bearing roller 37 and a lever 38 attached to the support beam 31.
  • the lifting arm 25 with the support beams 31 can be pivoted into any desired position.
  • a possible position is shown in fig. 1 with a dashed line 40.
  • the lifting arm 25 with the support beam 31 can be moved to a discharge location 31, which position is indicated by a dashed line 32.
  • the cylinder piston assemblies 34 and 39 are controlled by the programmable control unit mentioned above.
  • the lifting arm 25 comprises a cylinder piston assembly 43 supported by the carrying plate 28, a carrier 44 being fixed on the free end of the piston rod of this cylinder piston assembly 43.
  • On both sides of the piston rod guiding rods 45 are mounted on the carrier 44, only one of which being shown in fig. 1. These guiding rods 45 are slidably guided through the carrying plate 28.
  • the carrier 44 is provided with pins 46 which are slidably mounted in the carrier 44 against the action of springs 47.
  • the downwardly projecting ends of the pins 46 carry nozzles 48 which may engage a work piece 26.
  • the frame 9 When a work piece 26 to be bent must be placed in the apparatus, the frame 9 is brought into a position extending obliquely downwardly from the pivot axis by the control unit; for example the position shown in fig. 1.
  • the control unit actuates the cylinder piston assembly 43 of the lifting arm 25 whereby the nozzles 48 are pressed on the upper work piece 26 in the storage location 27.
  • these nozzles 48 are connected to a source of underpressure not shown, so that the work piece 26 is sucked against the nozzles 48.
  • the lifting arm 25 than can be moved to the position shown in fig. 1 in full lines.
  • the stop projections 49 and 50 lying closest to the die part 7 or the stamp part 8 are retractable, for example because they can be pressed downwardly against the action of a spring.
  • the stop projections 51 are mounted fixedly. Work pieces of lower sizes will abut the stop projections 49 after being released by the nozzles 48 of the lifting arm 25, whereas work pieces with bigger sizes will abut on the stop projections 50 or 51.
  • the work piece 26 is clamped by the clamping jaws 19.
  • the frame 9 with the clamped work piece 26 now is brought in a substantially horizontal position, whereafter the work piece can be bent in the desired shape. During bending the frame 9 follows the movement of the work piece 26 under control of the control unit.
  • the work piece 26 can be bent in two directions, so that the work piece needs not to be turned upside down. Thereby the accuracy of the product manufactured will be very high.
  • holding means 52 mounted in the fixed supporting arms 21 are energized and the clamping jaws 19 opened. Thereafter, the support beam 13 can be moved backwards, wherein in a new position the clamping jaws 19 again clamp the work piece 26 and the holding means 52 are de-energized. The required bending operations can now be carried out on a further part of the working piece 26.
  • the arms 18 carrying the clamping jaws 19 are also provided with holding means 52. These holding means 52 may for example be made as nozzles connectable to a source of underpressure.
  • the frame When a bending operation should be carried out on the side part of the work piece 26 opposite of the die part or the stamp part 8, the frame is pivoted into an oblique position again, whereafter the lifting arm 25 is moved to the position 40.
  • the carrying plate 28 After actuating the cylinder piston assembly 43 and when the nozzles 48 engage the work piece 26, the carrying plate 28 is rotated in the holder 30 along 180° so that said side part of the work piece is directed towards the die part 7 or stamp part 8.
  • the frame 9 is again pivoted into an oblique position and the finished product is taken up from the frame 9 by the lifting arm 25.
  • the lifting arm 25 is brought into the position indicated by the dashed line 42 and the product is discharged on the discharge location 47.
  • the apparatus described is adapted to bend fully automatically work pieces into the desired end products under control of the control unit, wherein the dimensions of the end products meet high accuracy requirements.
  • each pin 46 is provided with a rounded head 53 accommodated with clearance in a chamber 54.
  • each nozzle 48 is freely movable in all directons so that the position of the nozzle 48 can be adapted to the position of a work piece 26.
  • Each nozzle 48 is provided with a body 55 carrying a ring 56 consisting of a flexible material, for example rubber.
  • the ring 56 has a sealing face 57 extending obliquely upwardly from a lowest circular edge 58.
  • the ring 56 surrounds an open chamber 59 which is connected through a passage 60 and a channel 61 with a connector for a source of underpressure.
  • the passage 60 is normally closed by a closing valve 63, which is maintained in the closed position by a spring 64.
  • the closing valve 63 has an actuating pin 65 projecting downwardly.
  • FIG. 5 there is schematically shown a cross-section of a second embodiment of the apparatus for bending sheet-like work pieces comprising a main frame 101 with two web plates 102 lying on both sides of the apparatus, only one of which being shown in fig. 5.
  • the main frame 101 further comprises a lower beam 103 and an upper beam 104, which is movable towards the lower beam 103 by means of two cylinder piston assemblies 105, only one of which is shown in fig. 5.
  • the lower beam 103 is provided with an rotatably mounted lower carrier 106 while the upper beam 104 is provided with a rotatably mounted upper carrier 107.
  • the lower carrien 106 and the upper carrier 107 each are equiped with a die part 108 with a longitudinal groove and a stamp part 109 with line-shaped contact zone.
  • the die part 108 and the stamp , part 109 of the upper and lower beams 106, 107 each can be brought into a working position directed towards the upper or lower beam 107, respectively.
  • European patent application 0 140 394 The construction of this part of the apparatus is further described in European patent application 0 140 394.
  • the apparatus further is provided with a frame 110 corresponding to the frame 9 of the apparatus of fig. 1.
  • the frame 110 is supported by the main frame 100 pivotably around a pivot axis by two arms 111 in a manner not further shown. This pivot axis substantially coincides with the line-shaped contact zone of the stamp part 109 when the stamp part 109 is directed towards the upper carrier 107 of the upper beam 104.
  • the frame 110 supports two clamping means 112 which are adapted to grip both sides of a work piece fed into the apparatus. The distance between the two clamping means 112 can be adapted to the size of the work piece as the clamping means 112 are slidably mounted on a support beam 114 by arms 113.
  • the frame 110 further is provided with stops not shown in the drawing which determine the position of a work piece placed in the apparatus with respect to the die part 108 or the stamp part 109 of the lower carrier 106. Further the frame 110 is provided with supports 115 for supporting the work piece. These supports 115 are slidably mounted on a box beam 116.
  • the frame 110 on both sides is provided with a guiding roller 117 guided by a corresponding guide way 118.
  • the guide ways 118 are attached on the web plates 102 of the apparatus.
  • the pivoting movement of the frame 110 takes place by means of a control mechanism not shown which can be made in any desired manner.
  • the control is carried out by means of a programmable control unit in response to the movement of the upper beam 104 with respect to the lower beam 103. This movement can be measured in the usual manner by two potentiometers supported by the web plates 102, the movable contacts of which are connected with the corresponding ends of the upper beam 104.
  • the control unit can cause the frame 110 to accurately follow the bending of the work piece so that no undesired bending of the work piece can take place and the work piece is continuously maintained in the correct position by the clamping means 112.
  • the apparatus described further is provided with a lifting arm 119 by means of which plate-shaped work pieces 120 can be taken up from a storage location 121 and can be laid upon the frame 110. With the example of the work pieces 120 shown in the drawings, these work pieces are pre-processed.
  • the lifting arm 119 comprises a cylinder piston assembly 122 which is rotatably borne in a housing 124 together with guiding means 123 on both sides.
  • the housing 124 is suspended substantially in the centre of the apparatus in two loading arms 125, the ends of which opposite of the housing 124 are rotatably connected_with a beam 126 fixed on the corresponding web plate 102.
  • a coupling rod 127 between the housing 124 and the beams 126 provides for an accurate positioning of the housing 124 in the starting position of fig. 5 and the loading position indicated by a dashed line.
  • the pivoting movement of the lifting arm 119 takes place by means of a cylinder piston assembly 128, wherein the control is carried out by the above-mentioned programmable control unit.
  • a carrier.129 is fixed on the free end of the piston of cylinder piston assembly 122, said carrier 129 being provided with a plurality of rows of suction-cups 130 which can engage a work piece.
  • the row of suction-cups 130 adjacent the apparatus is slidably connected with the carrier 129 so that the distance between the suction-cups 130 is adjustable in correspondence with the width of a work piece to be bent.
  • each of said arms being rotatably connected with a corresponding support 132.
  • the supports 132 are slidably mounted on the lower beam 103, the supports 132 each resting against the lower beam 103 with a roller 133.
  • the supports 132 engage a supporting shaft 134, both halves of which are provided with a screw-thread with opposite pitch so that by rotating the shaft 134 the supports 132 can be moved towards and away from each other in order to accommodate to the length of the work piece.
  • each of the arms 131 is provided with a rotatably driven clamping means 135 only schematically indicated.
  • clamping means 135 a work piece can be taken up from the frame 110 in the position 136 indicated with a dashed line, when the pivot axis of the frame is displaced upwardly in vertical direction. Thereafter the arms 131 are displaced to a rotating position 137 also indicated by a dashed line, in which position the clamping means 135 are driven, whereby the work piece is rotated around a horizontal axis which lies substantially in the plane of at least a portion of the work piece.
  • the cylinder piston assembly 122 with the carrier 129 is rotatably mounted in the housing 124, so that it is possible during a bending operation on a work piece to take up this work piece from the frame 110 and to rotate the same around an axis perpendicular to the plane of the work piece.
  • the apparatus according to fig. 5 provides the possibility to rotate the work piece around two axes crossing perpendicular, whereby substantially any profile can be bent without any problems.
  • control of the lifting arm 119, the arms 131 and the clamping means 135 takes place by the above-mentioned control unit.
  • This control unit is also adapted for bringing in the working position the die part 108 or the stamp part 109 of the lower and upper beams 106, 107.
  • Fig. 6 shows a work piece 120, the subsequent bending lines where the work piece has to be bend being indicated by a-f. Further fig. 6 shows the profile 138 obtained by bending the work piece 120. In fig. 7a-7f the subsequent bending operations on the work piece are shown, wherein the die part 108 and the stamp part 109 of the lower and upper carriers 106, 107 are partially shown. The bending operations shown in fig. 7a-7f correspond with the indications a-f in fig. 6.
  • the lifting arm 119 takes a work piece 120 from the storage location 121, whereafter the lifting arm is brought into the loading position indicated by a dashed line by the cylinder piston assembJy 128.
  • the frame 110 is in the shown oblique position.
  • the work piece 120 is placed on the supports 115 of the frame 110, wherein the downwardly directed edge of the work piece 120 will abut the stop elements not shown.
  • the clamping means 112 then clamp the work piece 120.
  • the lifting arm 119 is moved to the shown position by the cylinder piston assembly 128, while the frame 110 is brought in a horizontal position.
  • the stamp 109 of the upper carrier 107 and the die part 108 of the lower carrier 106 are brought in the working position for carrying out the first bending on the bending line a, as shown in fig. 7a.
  • the support beam 114 of the frame 110 is displaced in a direction lateral to the lower beam 103 until the product 120 lies with the bending line a in the correct position with respect to the die part 108 and the stamp part 109.
  • the cylinder piston assemblies 105 are actuated for making the desired bending, wherein the frame 110 follows the movement of the product 120 held by the clamping means 112.
  • the die part 108 of the lower carrier 106 and the stamp part 109 of the upper carrier 107 are changed so that the situation of fig. 7b is obtained.
  • the support beam 114 is moved again until the bending line b is in the correct position, whereafter by actuating the cylinder piston assemblies 105 the bending of fig. 7b can be made.
  • the work piece has to be rotated around a horizontal longitudinal axis, for which purpose the pivot axis of the frame 110 is moved upwardly and arms 131 are brought in the position 136, in which the clamping means 135 may grip the work piece 120.
  • the clamping means 112 are opened and the arms 131 are brought in the position indicated by 137, in which the work piece 120 is rotated by driving the clamping means 135, whereafter the arms 131 place the work piece again on the supports 115 of the frame 110 and the clamping means 112 again clamp the work piece 120.
  • the work piece 120 For carrying out the bending operations of fig. 7e and 7f, the work piece 120 has to be rotated around an axis perpendicular to the surface of the work piece. To this end, the lifting arm 119 is brought in the position indicated by a dashed line. By actuating the cylinder piston assembly 122 the work piece 120 is taken up from the frame 110 and the cylinder piston assembly 122 and the guiding means 133, rotatably borne in the housing 124, are rotated along 180 0 . Thereafter the work piece 120 is placed on the supports 115 of the frame 110 again and the clamping means 112 again clamp the work piece 120. Subsequently, only the support beam 114 has to be displaced in order to sequentially bring the bending lines e and f in the correct position.
  • both stamp parts 109 each are provided with an end 139 obliquely extending with respect to the vertical.
  • the end 139 of the stamp part 109 of the upper carrier 107 is oppositely directed to the end 139 to the stamp part 109 of the lower carrier 106.
  • the finished product 138 is taken from the frame 110 by the arms 131 and the arms are rotated to a discharge position shown in full lines, in which the finished product is put upon a pallet for example (not shown).
  • the lifting arm 119 may take up a next work piece to be bent from the storage location 121, so that it is possible to obtain a high production rate with the apparatus described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP86201380A 1985-08-08 1986-08-06 Procédé et appareil pour plier des pièces en tôle Withdrawn EP0213667A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL8502206A NL8502206A (nl) 1985-08-08 1985-08-08 Werkwijze en inrichting voor het buigen van plaatvormige werkstukken.
NL8502206 1985-08-08
NL8503471 1985-12-18
NL8503471A NL8503471A (nl) 1985-12-18 1985-12-18 Inrichting voor het buigen van plaatvormige werkstukken.

Publications (2)

Publication Number Publication Date
EP0213667A2 true EP0213667A2 (fr) 1987-03-11
EP0213667A3 EP0213667A3 (fr) 1988-09-14

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ID=26646062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201380A Withdrawn EP0213667A3 (fr) 1985-08-08 1986-08-06 Procédé et appareil pour plier des pièces en tôle

Country Status (1)

Country Link
EP (1) EP0213667A3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003857A1 (fr) * 1988-10-07 1990-04-19 Aliko Oy Alitalon Konepaja Dispositif de support pour presse plieuse
FR2654371A1 (fr) * 1989-11-16 1991-05-17 Amada Co Ltd Installation de cintrage et appareil de manipulation de feuilles metalliques.
WO1991008067A1 (fr) * 1989-11-30 1991-06-13 Amada Company, Limited Dispositif de transfert pour pieces a façonner
WO1994001234A2 (fr) * 1992-07-10 1994-01-20 Horst Warneke Chaine de production pour la fabrication d'un caisson metallique pour des constructions de plafonds et/ou de murs realisees a partir de plaques de tole
EP0619151A1 (fr) * 1993-04-06 1994-10-12 Beyeler Raskin S.A. Dispositif pour la manipulation d'une pièce lors des opérations successives de travail de ladite pièce avec une presse
EP0636435A1 (fr) * 1993-06-30 1995-02-01 Amada Metrecs Company, Limited Dispositif pour placer et retirer des pièces dans une presse de pliage
DE102012212345B4 (de) * 2012-07-13 2020-12-17 Eb-Invent Gmbh Vorrichtung zur Bewegung einer Last
CN113649437A (zh) * 2021-07-20 2021-11-16 何生 一种全自动液压板料折弯机
CN114589219A (zh) * 2022-04-08 2022-06-07 徐州艾奇川自动化设备有限公司 一种机床防护罩单元钣金加工设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433841A (en) * 1945-04-20 1948-01-06 William T Glud Pivoted forming die for reciprocating metal plate benders
DE1176816B (de) * 1961-07-20 1964-08-27 Beteiligungs & Patentverw Gmbh Vorrichtung zum Ansaugen und Anheben von Blechtafeln, Platten oder anderen im wesent-lichen ebenen Werkstuecken
AT261363B (de) * 1965-12-09 1968-04-25 Haemmerle Ag Maschf Einrichtung zum Zuführen von Blechtafeln von einem Stapel auf den Arbeitstisch einer Blechbearbeitungsmaschine
GB2082094A (en) * 1980-07-30 1982-03-03 Nagoya Kiko Kk Workpiece transfer apparatus
JPS5978725A (ja) * 1982-10-27 1984-05-07 Shin Meiwa Ind Co Ltd 板状体自動折曲げ装置
EP0140394A2 (fr) * 1983-10-10 1985-05-08 Cornelis Hendricus Liet Appareil pour plier de la tôle
FR2556988A1 (fr) * 1983-12-21 1985-06-28 Rousselin Jean Dispositif d'alimentation et de suivi de toles pour plieuse automatique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433841A (en) * 1945-04-20 1948-01-06 William T Glud Pivoted forming die for reciprocating metal plate benders
DE1176816B (de) * 1961-07-20 1964-08-27 Beteiligungs & Patentverw Gmbh Vorrichtung zum Ansaugen und Anheben von Blechtafeln, Platten oder anderen im wesent-lichen ebenen Werkstuecken
AT261363B (de) * 1965-12-09 1968-04-25 Haemmerle Ag Maschf Einrichtung zum Zuführen von Blechtafeln von einem Stapel auf den Arbeitstisch einer Blechbearbeitungsmaschine
GB2082094A (en) * 1980-07-30 1982-03-03 Nagoya Kiko Kk Workpiece transfer apparatus
JPS5978725A (ja) * 1982-10-27 1984-05-07 Shin Meiwa Ind Co Ltd 板状体自動折曲げ装置
EP0140394A2 (fr) * 1983-10-10 1985-05-08 Cornelis Hendricus Liet Appareil pour plier de la tôle
FR2556988A1 (fr) * 1983-12-21 1985-06-28 Rousselin Jean Dispositif d'alimentation et de suivi de toles pour plieuse automatique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 189 (M-321)(1626), 30th August 1984; & JP - A - 59 78725 (SHINMEIWA KOGYO K.K.) 07-05-1984 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003857A1 (fr) * 1988-10-07 1990-04-19 Aliko Oy Alitalon Konepaja Dispositif de support pour presse plieuse
FR2654371A1 (fr) * 1989-11-16 1991-05-17 Amada Co Ltd Installation de cintrage et appareil de manipulation de feuilles metalliques.
WO1991008067A1 (fr) * 1989-11-30 1991-06-13 Amada Company, Limited Dispositif de transfert pour pieces a façonner
US5193967A (en) * 1989-11-30 1993-03-16 Amada Company, Limited Device for transferring a workpiece
US5528818A (en) * 1992-07-10 1996-06-25 Warneke; Horst Assembly line for producing a steel coffer from sheet metal plate
WO1994001234A2 (fr) * 1992-07-10 1994-01-20 Horst Warneke Chaine de production pour la fabrication d'un caisson metallique pour des constructions de plafonds et/ou de murs realisees a partir de plaques de tole
WO1994001234A3 (fr) * 1992-07-10 1994-03-31 Horst Warneke Chaine de production pour la fabrication d'un caisson metallique pour des constructions de plafonds et/ou de murs realisees a partir de plaques de tole
EP0619151A1 (fr) * 1993-04-06 1994-10-12 Beyeler Raskin S.A. Dispositif pour la manipulation d'une pièce lors des opérations successives de travail de ladite pièce avec une presse
EP0636435A1 (fr) * 1993-06-30 1995-02-01 Amada Metrecs Company, Limited Dispositif pour placer et retirer des pièces dans une presse de pliage
US5555763A (en) * 1993-06-30 1996-09-17 Amada Metrecs Company, Limited Work loading and unloading device for bending machine
DE102012212345B4 (de) * 2012-07-13 2020-12-17 Eb-Invent Gmbh Vorrichtung zur Bewegung einer Last
CN113649437A (zh) * 2021-07-20 2021-11-16 何生 一种全自动液压板料折弯机
CN114589219A (zh) * 2022-04-08 2022-06-07 徐州艾奇川自动化设备有限公司 一种机床防护罩单元钣金加工设备

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