US20050139050A1 - Method for operating a plate system for stamping presses and connection element for carrying out said method - Google Patents

Method for operating a plate system for stamping presses and connection element for carrying out said method Download PDF

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Publication number
US20050139050A1
US20050139050A1 US10/502,311 US50231105A US2005139050A1 US 20050139050 A1 US20050139050 A1 US 20050139050A1 US 50231105 A US50231105 A US 50231105A US 2005139050 A1 US2005139050 A1 US 2005139050A1
Authority
US
United States
Prior art keywords
panel
connection means
rear edge
edge area
punching
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.)
Abandoned
Application number
US10/502,311
Other languages
English (en)
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.)
Alfons Haar Maschinenbau 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
Assigned to ALFONS HAAR MASCHINENBAU GMBH & CO. reassignment ALFONS HAAR MASCHINENBAU GMBH & CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAAR, STEFAN
Publication of US20050139050A1 publication Critical patent/US20050139050A1/en
Priority to US12/190,971 priority Critical patent/US7975580B2/en
Abandoned 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
    • 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 the operation of a panel placement system for punching presses according to the preamble of claim 1 .
  • Panel placement systems serve for delivering positioned panels, e.g. made of aluminum, to a punching press which punches out a predetermined number of blanks from the panel.
  • EP 0 539 669 has made known a panel placement system in which the first gripping means seizes a panel on opposed sides at a transfer position. The panel is moved to the transfer position by second gripping means which engage the rear edge of the panel. The transfer position corresponds to a position of the panel in which the punch performs a first punching stroke on the panel. The feed slide having the second gripping means brings the panel to the transfer position only after the first gripping means have reached their pick-up position along the two axes.
  • the first gripping means are adjustable along two orthogonal axes to allow an offset pitch to be chosen for the surfaces to be punched out, for a favorable material utilization.
  • the transfer of the panel to the first gripping means at the transfer position takes place during the first punching step during which the panel is fixed by the punching die. After the machining of the preceding panel ends the two axes of the feed for the first gripping means and the feed slide travel to the initial and pick-up position in which a new panel is picked up.
  • the panel placement system described helps to significantly reduce the transfer time for the panels with the press continuing to run. Nevertheless, there is at least one idle stroke between the punching step of a preceding panel and the first punching step of the succeeding panel. The idle stroke could possibly be avoided by lowering the die ring. However, the benefit which is achievable is brought about at the expense of positioning errors as the panel is pulled down during the last cut.
  • one of the two pairs of feed pliers is directly at one of the outer dies. If it is to be ensured that the upper edge of the lower gripper mouth defines a plane with the die ring to prevent the panel from being pulled down during the last stroke the pliers are in a specifically formed pocket of the lower die ring when cutting diameters are small ( ⁇ 100 mm).
  • the panel which is newly to be introduced has to be passed through under the feed pliers. However, this can be accomplished only after the pliers are moved back a sufficient length to leave enough space for the panel which is moving in.
  • the front edge of the panel which is newly to be introduced has to be raised to the level of the die ring.
  • the known gripping means are formed by pliers.
  • the pliers wear rapidly, primarily when panels of chromium-plated sheet steel are employed. The chromium will crumble off the panel edges and causes debris to work into the mouths of the pliers. Wear also takes place in the joints of the pliers. Since the plier size has to be small there is a need to provide bearings of a simple construction only, which further increases wear.
  • first connection means of the feed motion seize the panel exclusively from above in a rear edge area which is located between the rear edge and the surfaces to be punched out. What is understood by the surfaces to be punched out here is the final row of the surfaces to be punched out, based on the direction of feed.
  • connection means seize the rear edge area via a vacuum.
  • connection means seize the rear edge area electromagnetically.
  • connection means Seizing the rear edge area via a vacuum and/or electromagnetically causes a frictional fit between the connection means and the panel.
  • connection means seize the panel by means of pointed projections which penetrate into the rear edge area of the panel when the connection means seize the edge area. This establishes a positive fit between the connection means and the panel.
  • the projections of the first connection means can be formed by pin-like spikes which penetrate into the panel, which spikes can be disposed within suction ports of vacuum nozzles, according to an aspect of the invention. At the moment the panel is pressed against the nozzle a spike of the nozzle penetrates into the panel fully or partially. Even if the steel was cold-rolled twice the spikes can penetrate through a panel which is 0.18 mm thick, for example.
  • connection means may be disposed on at least one ledge which cause portions thereof to engage gores which are defined between the rear edge of the panel and the surfaces to be punched out.
  • the ledge can present one or more suction ports which are connected to a vacuum source.
  • connection means For an interengagement of the connection means and the panel, it is necessary either for the connection means to carry out a lifting motion in order to be lowered against the panel and to be moved up again subsequently in order that the panel be advanced in the plane of cut. Alternatively, it is also possible to maintain the connection means at a constant height and to raise the panel or rear end of the panel at the transfer position instead to establish the frictional fit or positive fit with the first connection means.
  • the inventive method uses areas of the panel which are not punched out, for the connection means.
  • the panels in question are those which leave vacant spaces between the cuts, which mostly are of a round or non-rectangularly formed shape, and the rear edge.
  • those vacant surfaces are utilized for seizing and shifting the panels.
  • the further advantage of the invention is that a panel, while undergoing the final punching cut, is not pulled around, but the preceding panel can be pulled out rearwards instead and a fresh panel can be readily pushed in by a feed slide underneath.
  • the inventive method can be employed for all panel feed systems which are known. It is usable for panel placement systems which operate with a feed slide which conveys the panels from an aligning station to a transfer station in which they are seized by the connection means of the feed slide and are advanced to the punching press.
  • the invention is also applicable to so-called four-axis systems in which the feed slides fetch the panels directly from the aligning station and advance them to the punching press. In this case, two feed slides are provided which alternately advance the seized panels to the punching press.
  • the time required to pick up and take over a panel is exceptionally short and allows to operate without any idle stroke without reducing the number of revolutions of the press.
  • Another advantage of the invention is that better guidance is possible because of the way the panel is seized, specifically when the panel is large and thin. While the panel is fixed according to the invention the force can be introduced across the entire panel width and undulary motions or the like can be avoided during a dynamic operation. This makes possible considerably larger accelerations and higher performances.
  • FIG. 1 shows a plan view of a schematically shown panel placement system including means of the invention during the transfer from an advancement slide to a feed device.
  • FIG. 2 shows a representation similar to FIG. 1 with a panel after the end of machining.
  • FIG. 3 shows a section taken through the representation of FIG. 1 along the line 3 - 3 .
  • FIG. 4 shows the view 4 of FIG. 1 .
  • FIG. 5 shows the view 4 of FIG. 2 .
  • a punching press of a conventional design type is designated by 10 . It has three punching dies 12 which are moved perpendicularly to the plane of the drawing by means of a ram.
  • a feed slide 16 is adjustable along a guideway 18 in the direction of the two-ended arrow 20 .
  • the feed slide 16 has holders 22 , 24 for a gripper ledge 25 as a first connection means. Reference to the structure of the ledges 25 will be made later.
  • the slide 16 and the holders 22 , 24 are actuated by appropriate adjustable drives which are not shown and, in turn, are controlled by a suitable control device.
  • An advancement slide 30 (only shown in FIG. 1 ) having two pairs of gripping pliers 32 , 34 as second connection means is adjustable along a slide guideway 36 in the direction of the two-ended arrow 38 .
  • the drive of the slide 30 is not shown either.
  • a frictional fit by the advancement slide is perceivable, e.g. by magnetic force or a vacuum.
  • the gripping pliers 32 , 34 can be of a conventional structure, e.g. a non-movable jaw 35 as a lower mouth and a movable jaw 37 as a upper mouth with the movable jaw 37 actuated by an appropriate drive which is not shown (see FIG. 3 ).
  • the contour of the ledge 25 is such that it engages the gores by portions which are formed between the surfaces to be punched out in the respective rear row and the rear edge.
  • the ledge 25 is always above the panel 40 a and 40 . It is shown in cross-section in FIGS. 4 and 5 .
  • a recess 50 can be seen to which a duct 52 is led via a suitable connection 54 which is not shown in more detail.
  • the duct 52 is connected to a vacuum source which is not shown so that the recess 50 is under a negative pressure. Therefore, such negative pressure helps in holding the panel 40 a and 40 by the ledge 25 .
  • a pin-like spike 56 is centrally disposed in the recess 50 .
  • the spike 56 will penetrate into the material of the panel 40 a or 40 so that the panel is also held in a positive fit. In this manner, it is possible to advance the panel 40 a or 40 to the press 10 as desired.
  • the ledge 25 can have a plurality of such connections means as shown in FIGS. 4 and 5 in order to seize the panel 40 a or 40 across a large width.
  • FIG. 2 shows a panel 40 to be machined at a position in which the final punching step is performed.
  • the transfer position corresponds to that position in which the punching dies 12 carry out the first cut.
  • the advancement slide 30 can smoothly advance the succeeding panel below the machined panel as results from FIGS. 4 and 5 . They allow to see the table top 60 on which the panel is advanced. Once the panel has reached the transfer position of FIG.
  • FIG. 5 shows a male die 68 and a female die 70 of the punching dies 12 .
  • the underside of the ledge 25 exactly corresponds to the cutting plane of the dies 68 , 70 .
  • the panel can also be raised, at least across some part of its width, by raising the advancement slide.
  • the principle shown allows to bring about the feed of the panels with no idle strokes of the punching press.
  • the panels 40 and 40 a are safely seized by the ledge 25 using the connection means shown so that deformations of the panels that are caused by the feed motions will not occur. Since the panels are seized across a wide surface within the rear edge area the remaining grid will be stabilized also during the final punching step.
  • the remaining grid can be released from the ledge 25 , for example, by the nozzles 50 generating a pressure surge which moves the remaining grid down.

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)
US10/502,311 2002-01-26 2002-12-24 Method for operating a plate system for stamping presses and connection element for carrying out said method Abandoned US20050139050A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/190,971 US7975580B2 (en) 2002-01-26 2008-08-13 Method for operating a plate system for stamping presses and connection element for carrying out said method

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
DE10202994.6 2002-01-26
PCT/EP2002/014753 WO2003061867A1 (de) 2002-01-26 2002-12-24 Verfahren zum betreiben eines tafelanlagesystems für stanzpressen und verbindungsmittel zur durchführung des verfahrens

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/190,971 Division US7975580B2 (en) 2002-01-26 2008-08-13 Method for operating a plate system for stamping presses and connection element for carrying out said method

Publications (1)

Publication Number Publication Date
US20050139050A1 true US20050139050A1 (en) 2005-06-30

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ID=27588078

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/502,311 Abandoned US20050139050A1 (en) 2002-01-26 2002-12-24 Method for operating a plate system for stamping presses and connection element for carrying out said method
US12/190,971 Active US7975580B2 (en) 2002-01-26 2008-08-13 Method for operating a plate system for stamping presses and connection element for carrying out said method

Family Applications After (1)

Application Number Title Priority Date Filing Date
US12/190,971 Active US7975580B2 (en) 2002-01-26 2008-08-13 Method for operating a plate system for stamping presses and connection element for carrying out said method

Country Status (8)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080308582A1 (en) * 2007-06-18 2008-12-18 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
US20090158580A1 (en) * 2007-06-18 2009-06-25 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
KR102518498B1 (ko) * 2021-10-27 2023-04-06 주식회사 닥터홈 위치변동을 최소화 한 건축용 곡면패널 제조방법

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2016015485A (es) * 2014-05-27 2017-03-23 Sacmi Coop Mecc Imola Societa' Coop Prensa multi-perforadora.

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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
US4297927A (en) * 1979-03-24 1981-11-03 The Warner & Swasey Company Sheet metal positioning and gripping apparatus and method
US4436007A (en) * 1981-03-30 1984-03-13 The Boeing Company Automated feed for a punch press and method of using same
US4603611A (en) * 1984-07-06 1986-08-05 Ferguson Dennis R Feed system for punch press
US4691817A (en) * 1984-10-13 1987-09-08 Alfons Haar Maschinenbau Gmbh & Co. Kg Feeder for introducing and feeding plates into a machine tool
US5400652A (en) * 1991-10-31 1995-03-28 Alfons Haar Maschinenbau Gmbh & Co. Plate positioning system for presses
US6876897B2 (en) * 2002-08-27 2005-04-05 Pilkington North America, Inc. Positioning device and method for operation

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USRE31053E (en) * 1978-01-23 1982-10-12 Bell Telephone Laboratories, Incorporated Apparatus and method for holding and planarizing thin workpieces
US4357006A (en) * 1980-11-28 1982-11-02 International Business Machines Corporation Distortion free 3 point vacuum fixture
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
DE3509630A1 (de) * 1985-03-16 1986-09-25 Bayerische Motoren Werke AG, 8000 München Vorrichtung zum transportieren von werkstuecken in bzw. aus werkzeugmaschinen
US4685363A (en) * 1985-05-22 1987-08-11 Gerber Scientific, Inc. Apparatus and method for supporting and working on sheet material
DE3614013A1 (de) * 1986-04-25 1987-11-05 Fischer Maschf Karl E Transport- und sortiervorrichtung fuer eine rechnergesteuerte winkelschere
DE3841683A1 (de) * 1988-04-20 1989-11-02 Haar Maschbau Alfons Vorrichtung zum ausschneiden und ggf. gleichzeitigen formen von teilen aus blechtafeln
US5067695A (en) * 1989-05-08 1991-11-26 Micron Technology, Inc. Circuit board support apparatus for use with circuit board lead trimmer
DE4225248A1 (de) * 1992-07-31 1994-02-03 Erfurt Umformtechnik Gmbh Platinenzuführeinrichtung für eine Presse
ES2111786T5 (es) * 1993-03-26 2000-12-16 Alfons Haar Maschb Gmbh & Co Prensa con un sistema de alimentacion de tablas y de avance.
US5660380A (en) * 1995-08-15 1997-08-26 W. L. Gore & Associates, Inc. Vacuum fixture and method for dimensioning and manipulating materials
JP3725630B2 (ja) * 1995-10-04 2005-12-14 アマダ アメリカ，インク． 板材穴明け取出しシステム

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4297927A (en) * 1979-03-24 1981-11-03 The Warner & Swasey Company Sheet metal positioning and gripping apparatus and method
US4436007A (en) * 1981-03-30 1984-03-13 The Boeing Company Automated feed for a punch press and method of using same
US4603611A (en) * 1984-07-06 1986-08-05 Ferguson Dennis R Feed system for punch press
US4691817A (en) * 1984-10-13 1987-09-08 Alfons Haar Maschinenbau Gmbh & Co. Kg Feeder for introducing and feeding plates into a machine tool
US5400652A (en) * 1991-10-31 1995-03-28 Alfons Haar Maschinenbau Gmbh & Co. Plate positioning system for presses
US6876897B2 (en) * 2002-08-27 2005-04-05 Pilkington North America, Inc. Positioning device and method for operation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080308582A1 (en) * 2007-06-18 2008-12-18 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
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
KR102518498B1 (ko) * 2021-10-27 2023-04-06 주식회사 닥터홈 위치변동을 최소화 한 건축용 곡면패널 제조방법

Also Published As

Publication number Publication date
JP2005515075A (ja) 2005-05-26
DK1472025T3 (da) 2010-08-09
EP1472025B9 (de) 2010-09-22
DE10202994A1 (de) 2003-08-14
DE10202994B4 (de) 2007-10-31
ES2344632T3 (es) 2010-09-02
US20090031874A1 (en) 2009-02-05
DE50214374D1 (de) 2010-05-27
EP1472025A1 (de) 2004-11-03
DK1472025T5 (da) 2010-11-08
WO2003061867A1 (de) 2003-07-31
US7975580B2 (en) 2011-07-12
WO2003061867A8 (de) 2004-09-02
JP3906206B2 (ja) 2007-04-18
AU2002361216B2 (en) 2009-01-08
EP1472025B1 (de) 2010-04-14

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Date Code Title Description
AS Assignment

Owner name: ALFONS HAAR MASCHINENBAU GMBH & CO., GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAAR, STEFAN;REEL/FRAME:016337/0992

Effective date: 20040819

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION