EP1472025A1 - Procede d'utilisation d'un systeme de plaque destine a des presses de poinconnage et element de connexion destine a la mise en oeuvre de ce procede - Google Patents

Procede d'utilisation d'un systeme de plaque destine a des presses de poinconnage et element de connexion destine a la mise en oeuvre de ce procede

Info

Publication number
EP1472025A1
EP1472025A1 EP02796733A EP02796733A EP1472025A1 EP 1472025 A1 EP1472025 A1 EP 1472025A1 EP 02796733 A EP02796733 A EP 02796733A EP 02796733 A EP02796733 A EP 02796733A EP 1472025 A1 EP1472025 A1 EP 1472025A1
Authority
EP
European Patent Office
Prior art keywords
connecting means
rear edge
panel
sheet
feed
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
EP02796733A
Other languages
German (de)
English (en)
Other versions
EP1472025B9 (fr
EP1472025B1 (fr
Inventor
Stefan Haar
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.)
Saeta GmbH and Co KG
Original Assignee
Alfons Haar Maschinenbau 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 Alfons Haar Maschinenbau GmbH and Co KG filed Critical Alfons Haar Maschinenbau GmbH and Co KG
Publication of EP1472025A1 publication Critical patent/EP1472025A1/fr
Application granted granted Critical
Publication of EP1472025B1 publication Critical patent/EP1472025B1/fr
Publication of EP1472025B9 publication Critical patent/EP1472025B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0481—Puncturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0577—Repetitive blanking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/445—With work-moving clamp jaw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/463—Work-feed element contacts and moves with work
    • Y10T83/4632—Comprises a work-moving gripper

Definitions

  • the invention relates to a method for operating a sheet system for punching presses according to the preamble of claim 1.
  • Sheet system systems are used to position sheets, for example made of aluminum, in a positioned position in a punching press which punches out a predetermined number of blanks from the sheet.
  • a board system has become known in which the first gripping means grips a board in a transition position on opposite sides.
  • the panel is brought into the transition position by second gripping means which engage on the rear edge of the panel.
  • the transfer position corresponds to a position of the sheet in which the punch performs a first punch stroke on the sheet.
  • the feed carriage which has the second gripping means only brings the board into the transfer position when the first gripping means have reached their receiving position along both axes.
  • the first gripping means can be adjusted along two orthogonal axes so that an offset division of the surfaces to be punched out can be selected for the purpose of favorable material utilization.
  • the transfer of the sheet in the transfer position to the first gripping means takes place, as mentioned, during the first punch cut, during which the sheet is fixed by the punch.
  • both axes of the feed for the first gripping means and the feed slide move to the starting and receiving position in which a new sheet is picked up.
  • the transition time can be significantly reduced with the press for the boards running. Nevertheless, there is usually at least one idle stroke between the punching step previous sheet and the first punching step of the subsequent sheet. This could possibly be avoided by lowering the cutting ring.
  • the achievable advantage is, however, bought with positioning errors by pulling down the board during the last cut.
  • one of the two feed tongs stands directly on one of the outer tools. If it is to be ensured that the upper edge of the lower jaw of the pliers forms a plane with the cutting ring so that the board is not pulled around during the last stroke, the pliers are in a specially shaped pocket of the lower cutting ring for smaller cutting diameters ( ⁇ 100 mm).
  • the new board to be retracted must be pushed under the feed tongs. However, this can only be done when the tongs have moved back a sufficient distance to leave enough space for the retracting table. The front edge of the new board to be retracted must be raised to the height of the cutting ring.
  • the punch press runs as fast as the feed allows. Then, however, there is no time left for the board for additional actions such as lifting or moving away. This time therefore leads to a reduction in the possible speed of the press and thus to a reduction in the performance of the entire system. The same applies to all known table feed systems.
  • the known gripping means are formed by pliers. Above all, when operating with plates made of chrome-plated sheet steel, the pliers wear out quickly. The chrome crumbles off the edges of the table and fills the pliers mouth for incorporation. Wear also occurs in the joints for the pliers. Since the pliers have to be small, only structurally simple bearings can be provided, which further increases wear.
  • the stability of the residual grid usually collapses because the remaining sheet metal parts only hang in webs and are therefore only connected to the collets to a limited extent. This fills in dimensional deviations in relation to the position of the sheet in the tool.
  • the invention has for its object to provide a method for operating a sheet system for punching presses, which avoids every idle stroke at high press speed, enables stable guiding of the sheet and allows almost wear-free operation.
  • the first connecting means for the feed only grasp the board from above in a rear edge region which lies between the rear edge and the surfaces to be punched out.
  • the areas to be punched out are to be understood as the last row of the areas to be punched out, based on the feed direction.
  • the rear edge area can be captured in various ways using the first connecting means.
  • One embodiment of the invention provides that the connecting means capture the rear edge area by means of a vacuum.
  • the connecting means electromagnetically detect the rear edge area.
  • connection means The detection of the rear edge area with vacuum and / or electromagnetically fills the connection means with the panel.
  • the connecting means grasp the panel with the aid of pointed projections which penetrate into the rear edge region of the panel when the connecting means grasp the edge region. This creates a positive connection between the connecting means and the panel.
  • Fig. 3 shows a section through the representation of FIG. 1 along the line 3-3.
  • FIG. 5 shows the view 5 according to FIG. 2.
  • 10 is a punch press of conventional design. It has three punching tools 12 which are moved perpendicular to the plane of the drawing by means of a plunger.
  • a feed carriage 16 is adjustable along a guide 18 in the direction of the double arrow 20.
  • the feed slide 16 has holders 22, 24 for a gripping bar 25 as the first connecting means. The structure of the strips 25 is discussed in more detail below.
  • Carriage 16 and holder 22, 24 are actuated by suitable adjusting drives, not shown, which in turn are controlled by a suitable control device.
  • a feed carriage 30 (only shown in FIG. 1) with two collets 32, 34 as the second connecting means can be adjusted along a carriage guide 36 in the direction of the double arrow 38.
  • the drive for the carriage 30 is also not shown. posed. However, it is conceivable to have a force-fit detection by the feed carriage, for example by magnetic force or vacuum.
  • the collets 32, 34 can be of conventional construction, for example have a rigid jaw 35 as the lower jaw and a movable jaw 37 as the upper jaw, the movable jaw 37 being actuated by a suitable drive (not shown) (see FIG. 3).
  • a recess 50 can be seen on the underside of the bar, to which a line 52 is led via a suitable connection 54, not shown in detail.
  • the line 52 is connected to a vacuum source, not shown, so that the recess 50 is under negative pressure. With the help of a vacuum, the panel 40 or 40a can therefore be held by the bar 25.
  • FIG. 2 shows a sheet 40 to be processed in a position in which the last punching step is carried out.
  • the strip 25 can be disengaged from the board or the remaining grid, for example by switching from vacuum to compressed air.
  • the feed carriage 16 returns to a transfer position, as shown in FIG. 1.
  • the collets 32, 34 have already gripped a new plate. If the strip 25 has reached its position along the transverse axis 21, the receiving position on this axis has also been reached.
  • the feed carriage 30 moves the new board 40a along the longitudinal axis 20 in the direction of the punch press 10, the bar 25 moves due to the backward movement of the feed carriage 16, the board 40a being pushed into the press 10 unhindered.
  • the transfer position corresponds to the position in which the punching tools 12 make the first cut.
  • the feed carriage 30 can easily advance the next panel below the processed panel, as can be seen in FIGS. 4 and 5.
  • the stamp 62 extends through an opening 66 of the table top and is immediately returned to the starting position after the stroke.
  • Now the feed carriage 16 can advance the sheet to the punch press in the manner described until the last cut is made, as shown in FIG. 5.
  • 5 shows an upper tool 68 and a lower tool 70 of the punching tools 12.
  • the underside of the strip 25 corresponds exactly to the cutting plane of the tools 68, 70.
  • the sheets can be fed without empty strokes of the punch press.
  • the panels 40 and 40a are securely gripped by the strip 25 with the connecting means shown, so that deformations of the panels due to the feed movements do not occur. Due to the wide coverage of the sheets in the rear edge area, the rest of the grid is stabilized even during the last stamping step.
  • the remaining grid can be removed from the strip 25 e.g. can be solved in that a pressure surge is generated via the nozzles 50, which moves the residual screen downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

Abstract

L'invention concerne un procédé d'utilisation d'un système de plaque destiné à des presses de poinçonnage (10) consistant à déplacer une navette d'avancement entre l'outil de poinçonnage (12) de la presse de poinçonnage (10) et une position de prélèvement située en amont de la presse de poinçonnage (10). De premiers éléments de connexion (22, 24) de la navette d'avancement (16) saisissent, en position de prélèvement, une plaque (40) dans la zone arrière, de manière à faire avancer celle-ci pas à pas dans la presse de poinçonnage en fonction de la cadence de la presse (10), lesdits éléments de connexion (22, 24) saisissant la plaque (40) exclusivement par le haut, dans une zone d'arête arrière située entre l'arête arrière et les surfaces devant être poinçonnées.
EP20020796733 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede Expired - Lifetime EP1472025B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002102994 DE10202994B4 (de) 2002-01-26 2002-01-26 Verfahren zum Betreiben eines Tafelanlagesystems für Stanzpressen und Verbindungsmittel zur Durchführung des Verfahrens
DE10202994 2002-01-26
PCT/EP2002/014753 WO2003061867A1 (fr) 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme de plaque destine a des presses de poinçonnage et element de connexion destine a la mise en oeuvre de ce procede

Publications (3)

Publication Number Publication Date
EP1472025A1 true EP1472025A1 (fr) 2004-11-03
EP1472025B1 EP1472025B1 (fr) 2010-04-14
EP1472025B9 EP1472025B9 (fr) 2010-09-22

Family

ID=27588078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020796733 Expired - Lifetime EP1472025B9 (fr) 2002-01-26 2002-12-24 Procede d'utilisation d'un systeme d'alimentation de tôles destine a des presses de poinconnage et systeme d'alimentation destine a la mise en oeuvre de ce procede

Country Status (8)

Country Link
US (2) US20050139050A1 (fr)
EP (1) EP1472025B9 (fr)
JP (1) JP3906206B2 (fr)
AU (1) AU2002361216B2 (fr)
DE (2) DE10202994B4 (fr)
DK (1) DK1472025T5 (fr)
ES (1) ES2344632T3 (fr)
WO (1) WO2003061867A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090158580A1 (en) * 2007-06-18 2009-06-25 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
US8118197B2 (en) 2007-06-18 2012-02-21 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
WO2015181672A1 (fr) * 2014-05-27 2015-12-03 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Presse à multiples poinçons
KR102415634B1 (ko) * 2021-10-27 2022-07-01 주식회사 닥터홈 3d 프린팅을 이용한 곡면패널 성형방법

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US3830121A (en) * 1973-05-02 1974-08-20 A Gladkikh Installation for cutting rolled sheets
US4162641A (en) * 1977-10-28 1979-07-31 Potomac Applied Mechanics, Inc. Automatic loading and unloading for numerically controlled turret punch
USRE31053E (en) * 1978-01-23 1982-10-12 Bell Telephone Laboratories, Incorporated Apparatus and method for holding and planarizing thin workpieces
JPS55131451A (en) * 1979-03-24 1980-10-13 Murata Mach Ltd Positioning and clamping plate material
US4357006A (en) * 1980-11-28 1982-11-02 International Business Machines Corporation Distortion free 3 point vacuum fixture
US4436007A (en) * 1981-03-30 1984-03-13 The Boeing Company Automated feed for a punch press and method of using same
DE3405322A1 (de) * 1984-02-15 1985-08-29 Karl Mengele & Söhne Maschinenfabrik und Eisengießerei GmbH & Co, 8870 Günzburg Vorrichtung zum aufnehmen und abgeben von blechtafeln
US4603611A (en) * 1984-07-06 1986-08-05 Ferguson Dennis R Feed system for punch press
DE3437642C2 (de) * 1984-10-13 1994-03-31 Haar Maschbau Alfons Vorschubvorrichtung zum Eingeben und Vorschieben von Tafeln in eine Stanze
DE3509630A1 (de) * 1985-03-16 1986-09-25 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum transportieren von werkstuecken in bzw. aus werkzeugmaschinen
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Also Published As

Publication number Publication date
EP1472025B9 (fr) 2010-09-22
AU2002361216B2 (en) 2009-01-08
US20090031874A1 (en) 2009-02-05
EP1472025B1 (fr) 2010-04-14
ES2344632T3 (es) 2010-09-02
JP3906206B2 (ja) 2007-04-18
DE50214374D1 (de) 2010-05-27
DE10202994B4 (de) 2007-10-31
US7975580B2 (en) 2011-07-12
WO2003061867A1 (fr) 2003-07-31
DE10202994A1 (de) 2003-08-14
WO2003061867A8 (fr) 2004-09-02
US20050139050A1 (en) 2005-06-30
JP2005515075A (ja) 2005-05-26
DK1472025T3 (da) 2010-08-09
DK1472025T5 (da) 2010-11-08

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