EP0344741B1 - 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
EP0344741B1
EP0344741B1 EP89109812A EP89109812A EP0344741B1 EP 0344741 B1 EP0344741 B1 EP 0344741B1 EP 89109812 A EP89109812 A EP 89109812A EP 89109812 A EP89109812 A EP 89109812A EP 0344741 B1 EP0344741 B1 EP 0344741B1
Authority
EP
European Patent Office
Prior art keywords
advancing
feed
sheet
bars
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89109812A
Other languages
German (de)
English (en)
Other versions
EP0344741A3 (fr
EP0344741A2 (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 the can lid which is already shaped. Die-cutting of blanks is also required for box bodies, if they are deep-drawn to be manufactured.
  • 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 beam 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 feed of the sheet metal with two feed bars ensures optimal use of the punch, since there is no need to run with an idle stroke.
  • the swiveling 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 advance 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 exemplary embodiment shown, oval boards 10 are punched and that twelve boards are punched from a metal sheet 2, four boards being punched out side by side over 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.
  • the cut off are on a conveyor belt 13 Grid strips are transported away to the side 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 produced in this way 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 bars 7, 8 are fed by 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.
  • FIG. 3 shows the two feed bars 7, 8, which are each mounted with a guide block 19 'in a guide 20' of the conveyor table 6.
  • the guide block 19 ' overlaps a rod 25 on the longitudinal side of the conveyor table 6, which serves as a tilt axis for a tilting movement of the feed bars 7, 8, which is indicated by dashed lines for the feed bar 8 in FIG. 3.
  • 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 respective feed beam 7, 8 to be displaced or in the opposite direction to the conveying direction.
  • the feed bars 7, 8 are tilted up 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)

Claims (1)

  1. Dispositif d'avancement servant à amener des tôles vers au moins un outil d'estampage avec lequel des flans sont estampés des tôles, avec une poutrelle d'avancement fixée d'un côté, déplaçable sur une table de transport dans la direction d'avancement, avec pour accrocher la tôle des pinces de serrage déplaçables sur la poutrelle d'avancement, latéralement et transversalement à la direction d'avancement, caractérisé en ce qu'une seconde poutrelle d'avancement (8) est prévue, en ce que les deux poutrelles d'avancement (7, 8) sont chacune fixée d'un côté sur l'un des côtés longitudinaux de la table d'avancement (6), et en ce que les deux poutrelles d'avancement peuvent chacune être inclinées vers le haut autour d'une articulation de rotation (25) dont l'axe est orienté dans la direction du transport.
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
DE3818822A DE3818822C1 (fr) 1988-06-03 1988-06-03
DE3818822 1988-06-03

Publications (3)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755338C2 (de) * 1997-12-15 2001-12-13 Schmalbach Lubeca Zuführvorrichtung und Zuführverfahren für plattenförmige Werkstücke
ITPR20000033A1 (it) * 2000-05-17 2001-11-19 Amada Schiavi S R L Apparato di trasferimento di lamiere da una stazione di lavoro, in particolare di punzonatura, ad un magazzino
PT1304180E (pt) * 2001-10-15 2005-02-28 Elpatronic Ag Avanco de chapas num dispositivo de puncao

Family Cites Families (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
DE2254355C3 (de) * 1972-11-07 1980-11-27 L. Schuler Gmbh, 7320 Goeppingen Zu- und Abführvorrichtung für tafel- oder bandförmige Werkstücke an Pressen
DE2258644B2 (de) * 1972-11-30 1979-08-02 J. Sandt Ag, 6780 Pirmasens Zuführvorrichtung für bahnförmiges Gut zu Bearbeitungsmaschinen mit Haltezange und Vorschubzange
DE3336068C2 (de) * 1983-10-04 1994-09-08 Hermann Klann Metall Und Blech Transfervorrichtung
DE3510697A1 (de) * 1985-03-23 1986-09-25 L. Schuler GmbH, 7320 Göppingen Greifvorrichtungen in leerstufenbereichen einer transferpresse

Also Published As

Publication number Publication date
EP0344741A3 (fr) 1991-02-27
DE58903916D1 (de) 1993-05-06
DE3818822C1 (fr) 1989-04-13
EP0344741A2 (fr) 1989-12-06
DD283781A5 (de) 1990-10-24

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