EP4221909A1 - Dispositif de pliage doté d'une unité de butée arrière - Google Patents

Dispositif de pliage doté d'une unité de butée arrière

Info

Publication number
EP4221909A1
EP4221909A1 EP21794714.2A EP21794714A EP4221909A1 EP 4221909 A1 EP4221909 A1 EP 4221909A1 EP 21794714 A EP21794714 A EP 21794714A EP 4221909 A1 EP4221909 A1 EP 4221909A1
Authority
EP
European Patent Office
Prior art keywords
stop
guide
bending device
bending
face
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
EP21794714.2A
Other languages
German (de)
English (en)
Inventor
Gregor Spachinger
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.)
Trumpf Maschinen Austria GmbH and Co KG
Original Assignee
Trumpf Maschinen Austria GmbH and Co KG
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 Trumpf Maschinen Austria GmbH and Co KG filed Critical Trumpf Maschinen Austria GmbH and Co KG
Publication of EP4221909A1 publication Critical patent/EP4221909A1/fr
Pending legal-status Critical Current

Links

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
    • B21D5/002—Positioning devices
    • 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
    • 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
    • B21D43/26—Stops

Definitions

  • the invention relates to a bending machine for producing a component by forming a workpiece from sheet metal with a press table and with a press beam aligned opposite the press table and parallel to a longitudinal extent of the press table, according to the preamble of claim 1.
  • the rear stop device comprises stops, which can be brought into the position required for carrying out the bending with an adjusting or traversing device.
  • the stops are preferably motor-driven to adjust the bending edge to be produced on the workpiece. Their position depends on the length of the longitudinal edge of the workpiece to be placed against the stops and on the desired leg length after the production of the bending edge to be formed.
  • the stops of the rear stop device When used, the stops of the rear stop device also function as a support for the workpiece in the area of the longitudinal edge of the workpiece. In the case of large sheet metal parts, in particular in the case of small material thicknesses or sheet metal thicknesses, undesired bending or sagging can occur due to the weight when the sheet metal is inserted into the bending machine.
  • the object of the present invention is to create a device and a method with which reliable and high-quality production of workpieces can be achieved.
  • the object of the invention is achieved by a bending device for producing a component by forming a workpiece made of sheet metal by free bending or embossing, with a Press table and with a press beam aligned opposite the press table and parallel to a longitudinal extent of the press table, and with a stop for contacting and aligning the sheet metal before carrying out a bending process on the sheet metal, with a guide beam aligned parallel to the longitudinal extent of the press table forming a rear stop unit is, and wherein at least a first stop and a second stop are arranged on the guide bar and these are motor-adjustable on the guide bar, released.
  • a third stop is arranged on the guide bar between the first stop and the second stop, the position of the third stop being changeable by adjusting the first stop or by adjusting the second stop along the length of the guide bar.
  • the third stop comprises a guide carriage, a bearing block and a stop finger.
  • the guide beam comprises a guide profile and the bearing block engages with the guide profile in a form-fitting manner and can be displaced along the guide profile.
  • the stop finger is connected in an articulated manner to the bearing block, the stop finger being pivotably mounted about a pivot pin, and the pivot pin being aligned in the direction of the longitudinal extension of the guide beam.
  • the buffer comprises a bolt protruding perpendicularly from a first end face and/or from a second end face.
  • the bolt is arranged in a central plane of the guide profile.
  • the end faces of the guide carriage of the third stop each comprise two bolts as buffers, with the bolts being arranged symmetrically in relation to a central plane of the guide profile.
  • the bolts are arranged so as to protrude perpendicularly from the first end face and/or from the second end face.
  • FIG. 1 shows a bending machine for producing a component by forming a workpiece made of sheet metal
  • FIG. 2 shows a detail of the bending machine with the rear stop device according to FIG. 1;
  • FIG. 3 shows a detail of the rear stop device with the guide bar and the stops
  • Fig. 4 shows a cross section of the third stop corresponding to Fig. 2;
  • FIG. 5 shows a plan view of the third stop according to FIG. 2;
  • FIG. 6 shows a plan view of the rear stop device with an arrangement of the stops
  • FIG. 8 shows a perspective view of a second embodiment of the rear stop device with an alternative third stop.
  • the bending machine 1 shows a bending device or a bending machine 1 for producing a component by forming a workpiece 2 made of sheet metal.
  • the bending machine 1 comprises a press table 3 and a press beam 4 opposite the press table 3 and aligned parallel to its length 3 adjustable vertically (in the Y direction).
  • the bending tools 5, 6 are suitable, for example, for free bending or embossing of a workpiece 2, with the press beam 4 being moved against the press table 3 in order to carry out the bending deformation, and in this way the upper bending tool 6 is pressed against the lower bending tool 5. Before this actual execution of the bending deformation of the workpiece 2, this is placed by an operator between the bending tools 5, 6, in which a rear longitudinal edge 7 is brought to rest against stops 8, 9 and the workpiece 2 is thereby aligned.
  • the first stop 8 and the second stop 9 are part of a rear stop device 10 and these stops 8, 9 can be adjusted against one another in the direction of the lengthwise extension of the press bed 3 (in the Z direction), depending on the size of the workpiece 2.
  • the bending machine is also designed with a control device 11 and an operating terminal 12 connected to it. The positioning of the stops 8, 9 can thus be carried out semi-automatically by the operator by making appropriate entries on the operator terminal 12.
  • FIG. 2 shows the rear stop device 10 of the bending machine 1 according to FIG. This one is with one parallel to the longitudinal extent of the press bed 3 (in the Z-direction) aligned guide beam 13 is formed, on which the first stop 8 and the second stop 9 can be motor-driven adjusted in the direction of the longitudinal extent of the press beam 4 .
  • the rear stop device 10 is also designed to be able to adjust this guide bar 13 in the X direction and also in the vertical direction (Y direction). By changing the position in the X-direction, the position of the stops 8, 9 is adjusted to the corresponding position for achieving the leg length to be formed on the workpiece 2.
  • FIG. 3 shows a detail of the rear stop device 10 with the guide bar 13 and the stops 8, 9 arranged thereon.
  • the guide bar 13 comprises a first toothed belt drive 14 and a second toothed belt drive 15 which are each operatively connected to one of the stops 8, 9 for their adjustment.
  • the guide bar 13 of the rear stop device 10 also has a guide profile 16 to which the two stops 8, 9 are fastened in such a form-fitting manner that they can only be adjusted in the Z-direction.
  • the bending machine 1 provides for a third stop 17 to be arranged on the guide beam 13 of the rear stop device 10 between the first stop 8 and the second stop 9 . It is provided that a position of the third stop 17 on the guide bar 13 is established by adjusting the first stop 8 or by adjusting the second stop 9 along the longitudinal extent of the guide bar 13 .
  • the use of the third stop 17 proves particularly advantageous when machining workpieces 2 with a particularly large length (Z-direction) or when performing bending with particularly large side lengths (X-direction) and when using sheet metal low thickness.
  • the third stop 17 can prevent an undesired or disadvantageous deflection of the workpiece 2 at its longitudinal edge 7 .
  • no separate motor drive i.e. no separate toothed belt drive
  • the third stop 17 Its position is changed by moving it using one of the two stops 8, 9. This means that if the third stop 17 is to be moved along the guide beam 13 to a position with a larger Z value, an input at the operating terminal 12, the first stop 8 is moved against the third stop 17 by shifting towards larger Z values and then shifts it in the positive Z direction. Conversely, the second stop 9 is used to move the third stop 17 to a position with a smaller Z value. Following the corresponding displacement of the third stop 17 by one of the stops 8, 9, the first stop 8 and the second stop 9 are brought into the position provided for them on the guide beam 13.
  • Fig. 4 shows a cross-section through the third stop 17 according to Fig. 2.
  • the third stop 17 comprises a guide carriage 18, an eager block 19 and a stop finger 20.
  • the guide carriage 18 When placed on the guide beam 13, the guide carriage 18 is in a form-fitting manner with the guide profile 16 of the Guide beam 13 engaged.
  • the stop finger 20 On the guide carriage 18 of the third stop 17 of the bearing block 19 is attached.
  • the stop finger 20 is mounted pivotably on the bearing block 19 .
  • the stop finger 20 and the bearing block 19 are connected to one another in an articulated manner by means of an axle bolt 21 which is aligned in the direction of the longitudinal extent of the guide beam 13 (Z-direction).
  • a support side 22 and a contact side 23 are formed on the stop finger 20 for the aligned contact of the longitudinal edge 7 of the workpiece 2 (FIG. 1).
  • an adjusting screw 24 limiting the pivoting range of the stop finger 20 is provided between the stop finger 20 and the bearing block 19 .
  • the adjusting screw 24 enables the horizontal alignment of the stop 17 and thus the vertical position of the support side 22 on the stop finger 20 to be adjusted.
  • buffers 27 are formed on a first end face 25 and on a second end face 26 of the guide carriage 18 .
  • the buffers 27 on the first end face 25 of the guide carriage 18 are symmetrical by two bolts 29 , 30 projecting perpendicularly from the first end face 25 with respect to a central plane 28 of the guide profile 16 .
  • the two buffers 27 are fastened to the second end face 26 of the guide carriage 18 so that they protrude perpendicularly from the second end face 26 .
  • FIG. 6 shows a plan view from above of the rear stop device 10.
  • the stops 8, 9, 17 are in their mounted state on the guide profile 16 of the guide beam 13.
  • the relative arrangement of the second stop 9 and the third stop 17 in the representation according to FIG. 6 is intended to illustrate a situation in which the third stop 17 with the aid of the second stop 9 on the guide beam 13 in the direction of the negative Z axis should be postponed.
  • the second stop 9 is moving in the direction of the third stop 17 at the moment shown.
  • An end face 32 of the guide carriage 33 of the second stop 9 facing the third stop 17 finally comes to rest against the protruding ends of the bolts 29, 30 of the third stop 17, so that as the movement of the second stop 9 continues, the third stop 17 moves away from the stop 9 is shifted in the negative Z-direction.
  • the bolts 29, 30 of the buffers 27 function as spacer elements so that a lateral minimum distance (in the Z-direction) between the stops 8, 9, 17 is not fallen short of when they are moved on the guide beam 13.
  • the arrangement of two bolts 29, 30 of the buffer 27, symmetrically with respect to the center plane 28 of the guide profile 16 can also be achieved that a lateral canting of the guide carriage 18 of the third stop 17 is avoided.
  • FIG. 7 shows a detail of the third stop 17 of the back stop device 10 of the bending machine 1 in a perspective view.
  • the illustration corresponds to a viewing direction of the first end face 25 of the guide carriage 18 of the third stop 17.
  • the two bolts 29, 30 of the buffers 27 are attached to the first end face 25 of the guide carriage 18 and are arranged symmetrically relative to the guide profile 16.
  • FIG. 8 shows a second exemplary embodiment of the third stop 17 of the rear stop device 10 of the bending machine 1, shown in perspective.
  • a single bolt 29 is provided as a buffer 27 on the first end face 25 of the guide carriage 18 .
  • the bolt 29 is perpendicular to the first end face 25 and projecting attached to the first end face 25 substantially in the central plane 28 of the guide profile 16 .
  • All information on value ranges in the present description is to be understood in such a way that it also includes any and all sub-ranges, e.g. the information 1 to 10 is to be understood in such a way that all sub-ranges, starting from the lower limit 1 and the upper limit 10, are also included , i.e. all subranges start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
  • Rear stop device Control device Operating terminal Guide bar First toothed belt drive Second toothed belt drive Guide profile Third stop

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

L'invention concerne un dispositif de pliage (1) pour produire un élément par formage d'une pièce en tôle (2), comportant une table de pressage (3) et ayant une poutre de pressage (4) orientée parallèlement à celle-ci, et présentant une butée (8, 9) pour le positionnement en butée et l'orientation de la tôle métallique avant qu'une opération de pliage soit effectuée sur la tôle métallique. Une poutre de guidage (13) d'une unité de butée arrière, orientée parallèlement à l'étendue longitudinale de la table de pressage (3), est formée, et au moins une première butée (8) et une deuxième butée (9) sont disposées sur la poutre de guidage (13) et sont réglables sur la poutre de guidage (13) par un moteur ; sur la poutre de guidage (13), une troisième butée (17) est disposé entre la première butée (8) et la deuxième butée (9) et une position de la troisième butée (17) est variable par réglage de la première butée (8) ou par réglage de la deuxième butée (9) le long de l'étendue longitudinale de la poutre de guidage (13).
EP21794714.2A 2020-09-29 2021-09-27 Dispositif de pliage doté d'une unité de butée arrière Pending EP4221909A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50829/2020A AT524261B1 (de) 2020-09-29 2020-09-29 Biegevorrichtung mit Hinteranschlageinheit
PCT/AT2021/060347 WO2022067363A1 (fr) 2020-09-29 2021-09-27 Dispositif de pliage doté d'une unité de butée arrière

Publications (1)

Publication Number Publication Date
EP4221909A1 true EP4221909A1 (fr) 2023-08-09

Family

ID=78302597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21794714.2A Pending EP4221909A1 (fr) 2020-09-29 2021-09-27 Dispositif de pliage doté d'une unité de butée arrière

Country Status (4)

Country Link
EP (1) EP4221909A1 (fr)
CN (1) CN116261492A (fr)
AT (1) AT524261B1 (fr)
WO (1) WO2022067363A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794428A (en) * 1980-12-05 1982-06-11 Hitachi Ltd Back gauge device for press brake
JP2581602Y2 (ja) * 1992-07-14 1998-09-24 株式会社アマダ プレスブレーキのバックゲージ装置
JP2001150071A (ja) * 1999-11-29 2001-06-05 Amada Co Ltd 突当移動位置決め装置
JP2005000980A (ja) * 2003-06-16 2005-01-06 Amada Co Ltd 突当移動位置決め装置
CN207188650U (zh) * 2017-09-12 2018-04-06 上海恺希机器人有限公司 挡止装置以及折弯机
JP6606566B2 (ja) * 2018-01-29 2019-11-13 株式会社アマダホールディングス プレスブレーキ
AT521619B1 (de) * 2018-08-28 2020-03-15 Trumpf Maschinen Austria Gmbh & Co Kg Verfahren zum Betreiben einer Biegemaschine

Also Published As

Publication number Publication date
CN116261492A (zh) 2023-06-13
AT524261A1 (de) 2022-04-15
AT524261B1 (de) 2023-08-15
WO2022067363A1 (fr) 2022-04-07

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