EP0344741A2 - Dispositif d'amenée de tôles à un outil d'emboutissage - Google Patents

Dispositif d'amenée de tôles à un outil d'emboutissage Download PDF

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Publication number
EP0344741A2
EP0344741A2 EP89109812A EP89109812A EP0344741A2 EP 0344741 A2 EP0344741 A2 EP 0344741A2 EP 89109812 A EP89109812 A EP 89109812A EP 89109812 A EP89109812 A EP 89109812A EP 0344741 A2 EP0344741 A2 EP 0344741A2
Authority
EP
European Patent Office
Prior art keywords
feed
sheet metal
advancing
sheet
bars
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.)
Granted
Application number
EP89109812A
Other languages
German (de)
English (en)
Other versions
EP0344741A3 (fr
EP0344741B1 (fr
Inventor
Gerhard Lauckner
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.)
Elpatronic AG
Original Assignee
Karges-Hammer-Maschinen & Co KG 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 Karges-Hammer-Maschinen & Co KG GmbH filed Critical Karges-Hammer-Maschinen & Co KG GmbH
Publication of EP0344741A2 publication Critical patent/EP0344741A2/fr
Publication of EP0344741A3 publication Critical patent/EP0344741A3/fr
Application granted granted Critical
Publication of EP0344741B1 publication Critical patent/EP0344741B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • 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
    • B21D43/003—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
    • 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

Definitions

  • the invention relates to a feed device for feeding sheet metal sheets to at least one stationary punching tool, with which blanks are punched out of the sheet metal sheets, with a feed beam that can be moved in the feed direction on a conveyor table and has collet chucks that grip the sheet metal sheets and that can be moved on the feed beam transversely to the feed direction .
  • the supply of metal sheets to a punching device with such a feed bar is known.
  • the feed bar regularly contains a spindle driven by a separate motor, with which the collets can be moved step by step, so that they move the metal sheet into the desired punching position under the punching tool.
  • the bar itself is mounted on a spindle parallel to the conveying direction, which also drives it step by step, thus determining the punching position in the conveying direction.
  • the punching out of boards can be connected to a pressing process, for example in order to produce a can lid that is already shaped.
  • the punching out of blanks is also required for box bodies if they are in deep drawing processes are to be produced.
  • Punching out blanks from a sheet has the advantage of a high level of utilization of the sheet with little waste due to the remaining grid of the sheet.
  • the metal sheet With the feed bar, the metal sheet is positioned step by step in the conveying direction and transversely to it, so that the desired blanks are punched out. If such a sheet is processed, the feed bar moves back and takes a new sheet. During this return movement, the continuously driven punch performs an idle stroke. This idle stroke naturally reduces the effectiveness of the punch.
  • the invention is therefore based on the object of designing a feed device of the type mentioned at the outset that punching is possible without an idle stroke.
  • each feed bar is alternately responsible for every second sheet of metal.
  • the first feed bar When the first feed bar has completed the movements for punching out the complete sheet, it swivels up so that it does not hinder the feed of the other feed bar when moving against the conveying direction.
  • the next sheet of metal can therefore be conveyed directly into the punching tool by the second feed beam during the next stroke.
  • the advance of the metal sheets with two advance bars ensures optimal use of the punch, since there is no need to run with an idle stroke.
  • the swiveling-up movement of the feed beam during the backward movement is preferably controlled by a hydraulic cylinder acting on the beam.
  • FIGS. 1 and 2 The processing sequence from right to left is shown in FIGS. 1 and 2.
  • a lifting table 1 On the right side there is a lifting table 1, which carries a stack of metal sheets 2.
  • the uppermost sheet metal plate 2 is gripped by four suction cups 3 and advanced through roller nips 4, 5 onto a conveyor table 6.
  • two feed bars 7, 8 move both parallel to the longitudinal axis 9 and stepwise transversely thereto.
  • the feed bars 7, 8 each grip a metal sheet 2 on the rear edge seen in the conveying direction with collets 21 and thus ensure a gradual feed of the metal sheets 2 both in the axial direction and stepwise transversely thereto in order to punch out the blanks 10 by means of a punching tool 11.
  • Figure 2 shows that in the illustrated embodiment oval boards 10 are punched and that twelve boards are punched from a metal sheet 2, four boards being punched out side by side across the width of the metal sheet 2.
  • two punching tools 11 are used, which have a free spacing of a board width.
  • scrap shears 12 are arranged which, after the sheet metal sheet 2 has been advanced, sever the row of bars which have been punched out. Abge on a conveyor belt 13 cut grid strips laterally transported to save space.
  • the cut blanks 10 are then transported step by step into a transfer press 14 which has three different drawing tools 15, 16, 17 arranged one behind the other for carrying out a three-stage drawing process.
  • the flanged edges of the deep-drawn cans thus produced are trimmed in a work station 18.
  • the deep-drawn, preferably conical cans can then be removed and stacked.
  • feed bars 7, 8 have the advantage that the punching can be done without an idle stroke.
  • the feed of the feed bars 7, 8 takes place with motors 26, each of which drives a spindle 26 '.
  • the two feed bars 7, 8 are supported on different sides and overlap the conveyor table 6 in a free-floating manner. They are both mounted so that they can be tilted to enable the other feed bars 7, 8 to be fed into the punching tool 11 when the sheet metal plate 2 is gripped.
  • Both the punch 11 and the drawing tools 15, 16, 17 are driven via a common eccentric shaft 19 which is mounted in the machine frame 20 of the device.
  • Figure 3 shows the two feed bars 7, 8, each of which is mounted with a guide block 19 'in a guide 20' of the conveyor table 6.
  • Each feed bar 7, 8 has on its with the guide block 19 'provided end of a motor 22 which rotates a spindle inside the guide beam on which spindle nuts of the collets 21 are mounted, so that the lateral position of the collets 21 is adjustable by the rotation of the motor 22.
  • the guide block 19 ' also overlaps with corresponding spindle nuts 23, the spindles 13', which cause the displacement of the respective feed beam 7, 8 or in the opposite direction to the conveying direction.
  • the tilting of the feed beam 7, 8 is effected by a hydraulic cylinder 24 which is articulated to the underside of the guide block 19 '.
  • the dashed-up position of the feed bar 8 shown in dashed lines during its return movement permits the trouble-free advancement of a metal sheet 2 through the feed bar 7 into the punching tool 11, without this having to carry out an idle stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Press Drives And Press Lines (AREA)
EP89109812A 1988-06-03 1989-05-31 Dispositif d'amenée de tôles à un outil d'emboutissage Expired - Lifetime EP0344741B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3818822 1988-06-03
DE3818822A DE3818822C1 (fr) 1988-06-03 1988-06-03

Publications (3)

Publication Number Publication Date
EP0344741A2 true EP0344741A2 (fr) 1989-12-06
EP0344741A3 EP0344741A3 (fr) 1991-02-27
EP0344741B1 EP0344741B1 (fr) 1993-03-31

Family

ID=6355723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109812A Expired - Lifetime EP0344741B1 (fr) 1988-06-03 1989-05-31 Dispositif d'amenée de tôles à un outil d'emboutissage

Country Status (3)

Country Link
EP (1) EP0344741B1 (fr)
DD (1) DD283781A5 (fr)
DE (2) DE3818822C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755338A1 (de) * 1997-12-15 1999-06-24 Naroska Maschinenfabrik Gmbh Vorschubvorrichtung
EP1304180A1 (fr) * 2001-10-15 2003-04-23 Elpatronic Ag Alimentation de tôles pour un dispositif de poinçonnage
ES2189638A1 (es) * 2000-05-17 2003-07-01 Amada Schiavi S R L Aparato de transferencia de chapas desde una estacion de trabajo, en particular de punzonado, a un deposito.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149067A1 (de) * 1971-10-01 1973-04-05 Manfred Wanzke Werkzeug App Un Vorschubgeraet
DE2254355A1 (de) * 1972-11-07 1974-05-16 Schuler Gmbh L Zu- und abfuehrvorrichtung fuer tafeloder bandfoermige werkstuecke an pressen
DE2258644A1 (de) * 1972-11-30 1974-06-06 Sandt Ag J Zufuehrvorrichtung fuer bahnfoermiges gut zu bearbeitungsmaschinen mit haltezange und vorschubzange
DE3336068A1 (de) * 1983-10-04 1985-04-18 Hermann Klann Metall- und Blechwarenfabrik GmbH, 8300 Landshut Transfervorrichtung
EP0195952A2 (fr) * 1985-03-23 1986-10-01 L. SCHULER GmbH Dispositifs de préhension situés dans les zones des postes intermédiaires sans outil d'une presse transfert

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149067A1 (de) * 1971-10-01 1973-04-05 Manfred Wanzke Werkzeug App Un Vorschubgeraet
DE2254355A1 (de) * 1972-11-07 1974-05-16 Schuler Gmbh L Zu- und abfuehrvorrichtung fuer tafeloder bandfoermige werkstuecke an pressen
DE2258644A1 (de) * 1972-11-30 1974-06-06 Sandt Ag J Zufuehrvorrichtung fuer bahnfoermiges gut zu bearbeitungsmaschinen mit haltezange und vorschubzange
DE3336068A1 (de) * 1983-10-04 1985-04-18 Hermann Klann Metall- und Blechwarenfabrik GmbH, 8300 Landshut Transfervorrichtung
EP0195952A2 (fr) * 1985-03-23 1986-10-01 L. SCHULER GmbH Dispositifs de préhension situés dans les zones des postes intermédiaires sans outil d'une presse transfert

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755338A1 (de) * 1997-12-15 1999-06-24 Naroska Maschinenfabrik Gmbh Vorschubvorrichtung
DE19755338C2 (de) * 1997-12-15 2001-12-13 Schmalbach Lubeca Zuführvorrichtung und Zuführverfahren für plattenförmige Werkstücke
ES2189638A1 (es) * 2000-05-17 2003-07-01 Amada Schiavi S R L Aparato de transferencia de chapas desde una estacion de trabajo, en particular de punzonado, a un deposito.
EP1304180A1 (fr) * 2001-10-15 2003-04-23 Elpatronic Ag Alimentation de tôles pour un dispositif de poinçonnage

Also Published As

Publication number Publication date
DE58903916D1 (de) 1993-05-06
DD283781A5 (de) 1990-10-24
EP0344741A3 (fr) 1991-02-27
EP0344741B1 (fr) 1993-03-31
DE3818822C1 (fr) 1989-04-13

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