EP0672478B1 - Verfahren zum Stanzen eines Rohlings von einem Metallband zur Herstellung von Scharnierbeschlag - Google Patents

Verfahren zum Stanzen eines Rohlings von einem Metallband zur Herstellung von Scharnierbeschlag Download PDF

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Publication number
EP0672478B1
EP0672478B1 EP95200121A EP95200121A EP0672478B1 EP 0672478 B1 EP0672478 B1 EP 0672478B1 EP 95200121 A EP95200121 A EP 95200121A EP 95200121 A EP95200121 A EP 95200121A EP 0672478 B1 EP0672478 B1 EP 0672478B1
Authority
EP
European Patent Office
Prior art keywords
blank
station
blanks
strip
metal strip
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
EP95200121A
Other languages
English (en)
French (fr)
Other versions
EP0672478A1 (de
Inventor
Gaetano Donatiello
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.)
Digiemme Srl
Original Assignee
Digiemme Srl
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 Digiemme Srl filed Critical Digiemme Srl
Priority to SI9530481T priority Critical patent/SI0672478T1/xx
Publication of EP0672478A1 publication Critical patent/EP0672478A1/de
Application granted granted Critical
Publication of EP0672478B1 publication Critical patent/EP0672478B1/de
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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/06—Making more than one part out of the same blank; Scrapless working

Definitions

  • This invention relates to a method for punching out a blank from a metal strip according to the preamble of claim 1 (see for example FR-A-2 191 954), intended, particularly but not exclusively, for manufacturing part of a furniture hinge.
  • the systems mostly used are those in which the blank is punched out in accordance with a pattern such that the blanked shapes copenetrate each other, the blanking operation being effected on a metal strip moving either linearly or with zig-zag movement.
  • the general object of the present invention is to obviate the drawbacks of the known art by providing a method for punching a blank from metal strip such as to leave practically no material scrap.
  • the reference numeral 10 indicates a metal strip which, in a first embodiment of the method of the invention, is made to advance stepwise in the direction of the arrow F by any equipment suitable for the purpose, which being well known to the expert of the art is not shown herein in detail.
  • a blank defined by the hatched region 11 of Figure 1 is punched from the strip 10 without leaving any scrap at all, by means of a die assembly 23 (punch - lower die).
  • the strip 10 from which the blanks are punched is fed in known manner through said die assembly 23.
  • the die assembly 23 is not shown in detail as its construction lies within the scope of the expert of the art.
  • the blank 11 obtained is shown in Figure 1a separated from the strip 10 and can be of different configurations depending on the part to be manufactured.
  • the blank 11 separated from the strip 10 is conveyed to a manipulation station as shown in Figure 1b where it is rotated, for example through 90°, into the position shown in Figure 1b suitable for a subsequent operation, such as drawing.
  • the blank 11 could also be orientated during its conveying from 1 to 1a, depending on its configuration and/or subsequent requirements.
  • the second stage of this first embodiment of the method according to the invention consists of separating a second blank 13 (identical to the blank 11) from the strip 10 along the cutting line 12 ( Figure 2) and transferring it into a manipulation station as shown in Figure 2a where it is rotated, for example through 90°, into the position shown in Figure 2b suitable for a subsequent operation, such as drawing analogous to the aforedescribed blank 11 (Fig.1b).
  • the blank 11 could be orientated during its conveying from 2 to 2a.
  • the strip After being advanced through one step in the direction of the arrow F into the position shown in Figure 3 (identical to Figure 1), the strip is ready for repeating the working cycle by punching out a third blank 14, and so on.
  • the strip 10 is positioned for the various working stages on the basis of the position of the die assembly or assemblies 23. More specifically, taking as reference the positions indicated by the lines A and B in Figures 1 and 2, the strip 10 is shifted forwards and/or backwards, to the right and/or to the left to achieve its correct position relative to the die assembly 23 ( Figures 1 and 2) for separation of the blank.
  • the direction in which the strip 10 is fed coincides with the direction of advancement of the blanks punched from it.
  • a blank 15 is punched from the strip 10 and moved into the position shown in Figure 4a suitable for a subsequent operation, such as a drawing operation.
  • a second blank 16 (identical to the blank 15) is punched from the strip 10 along a cutting line 17, moved into the position shown in Figure 4c and rotated into the position shown in Figure 4d, identical to that of the strip 15 in Figure 4a, suitable for the required operation.
  • the strip 10 is shifted in the same manner as shown in Figures 1-3 as described with reference to the first embodiment of the invention.
  • Figures 6 and 7 show a third embodiment of the method according to the invention in which the direction in which the strip 10 is fed, indicated by the arrow F3, is perpendicular to the advancement direction, indicated by the arrow F4, of the blanks punched from it.
  • Said blanks 18, 19 are mcved from the strip 10, as indicated in Figure 6a, into a position suitable for subsequent operations.
  • the strip 10 is advanced through a further step into the position shown in Figure 7 ready for commencing a new working cycle in which two successive blanks 21, 22 are punched out, and so on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hinges (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Adhesive Tape Dispensing Devices (AREA)
  • Package Frames And Binding Bands (AREA)
  • Adhesive Tapes (AREA)

Claims (9)

  1. Verfahren zum Herausstanzen eines Rohlings (11, 13, 14, 15, 16, 17) aus einem Metallstreifen (10) mit zumindest einem Matrizenaufbau (23), wobei der Rohling insbesondere aber nicht ausschließlich zur Herstellung eines Türbandgehäuses bestimmt ist, wobei das Verfahren die folgenden Schritte umfaßt, daß
    in einer ersten Station ein erster Rohling (11) aus dem Metallstreifen (10) gestanzt wird,
    der erste herausgestanzte Rohling (11) entfernt und an eine zweite Station in eine geeignete Position übertragen wird,
    ein zweiter Rohling (13) identisch dem ersten Rohling (11) herausgestanzt wird,
    der zweite herausgestanzte Rohling (13) entfernt und an die zweite Station in eine geeignete Position übertragen wird,
    die oben erwähnten Schritte wiederholt werden,
    dadurch gekennzeichnet,
    daß
    gleichzeitig mit der Übertragung des ersten Rohlings (11) der Streifen (10) in Längsrichtung um eine Strecke (X) in einer Richtung entgegengesetzt zu F zurückgezogen und durch Verschieben relativ zu dem zumindest einen Matrizenaufbau (23) um eine Strecke (Y) in einer Richtung (G) quer positioniert wird,
    gleichzeitig mit der Übertragung des zweiten Rohlings (13) der Streifen (10) in Längsrichtung um eine weitere Strecke (X) in der Richtung (F) vorgeschoben wird und dieser durch Verschieben relativ zu dem Matrizenaufbau (23) um eine Strecke (Y) in der Richtung (H) entgegengesetzt der Richtung (G) quer positioniert wird,
    wobei der Streifen (10) relativ zu dem Matrizenaufbau (23) in den Richtungen (G, H) um eine Strecke (Y) quer verschoben wird, der gemäß der Konfiguration der Rohlinge (11, 13, 14, 15, 16, 17) bestimmt ist, die so geformt werden sollen, daß bei der ersten Station bei einem ersten Schritt der Matrizenaufbau auf einer Seite des Metallstreifens (10) und bei einem zweiten Schritt auf der anderen Seite des Metallstreifens (10) aktiv ist und so weiter, so daß die aufeinanderfolgenden Schneidelinien aneinander angrenzen und kein Rest übrigbleibt, wobei die Strecke (Y) die Breite des Streifens (10) nicht überschreitet.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Rohlinge (11, 13) in der zweiten Station in der gleichen Position orientiert werden, die für den nächsten Vorgang geeignet ist.
  3. Verfahren nach Anspruch 2,
    dadurch gekennzeichnet,
    daß die Rohlinge (11, 13) in der zweiten Station beide um 90° aber in entgegengesetzten Richtungen um ihre Vorschubachse gedreht werden.
  4. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Rohlinge (11, 13) in eine Position, die für den nächsten Vorgang geeignet ist, während ihrer Übertragung von der ersten und zweiten Station orientiert werden.
  5. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß der Metallstreifen (10) in einer Richtung (F1) rechtwinklig zu der Vorschubachse (F2) des Rohlings (15, 16) zugeführt wird.
  6. Verfahren nach Anspruch 5,
    dadurch gekennzeichnet,
    daß die Rohlinge (15, 16) in der zweiten Station in eine Position orientiert werden, die für den nächsten Vorgang geeignet ist.
  7. Verfahren nach Anspruch 6,
    dadurch gekennzeichnet,
    daß der Rohling (16) in der zweiten Station um 180° um seine Vorschubachse gedreht wird.
  8. Verfahren nach Anspruch 5,
    dadurch gekennzeichnet,
    daß die Rohlinge (15, 16) in eine Position, die für den nächsten Vorgang geeignet ist, während ihrer Übertragung von der ersten und zweiten Station orientiert werden.
  9. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß zwei identische Rohlinge (18, 19) gleichzeitig aus einem Streifen (10) gestanzt werden, der schrittweise in einer Richtung rechtwinklig zu der Vorschubrichtung der ausgestanzten Rohlinge (18, 19) vorgeschoben wird, wobei die Rohlinge (18, 19) bei einem Abstand von N Schritten voneinander gestanzt werden.
EP95200121A 1994-01-21 1995-01-18 Verfahren zum Stanzen eines Rohlings von einem Metallband zur Herstellung von Scharnierbeschlag Expired - Lifetime EP0672478B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530481T SI0672478T1 (en) 1994-01-21 1995-01-18 Method for punching from metal strip a blank intended, particularly but not exclusively, for producing a furniture hinge casing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI940088 1994-01-21
ITMI940088A IT1269451B (it) 1994-01-21 1994-01-21 Perfezionamenti a procedimenti per la tranciatura da nastro metallico di uno sbozzato, destinato particolarmente,ma non esclusivamente,alla produzione di una scatola di cerniera per mobili

Publications (2)

Publication Number Publication Date
EP0672478A1 EP0672478A1 (de) 1995-09-20
EP0672478B1 true EP0672478B1 (de) 2001-03-07

Family

ID=11367587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95200121A Expired - Lifetime EP0672478B1 (de) 1994-01-21 1995-01-18 Verfahren zum Stanzen eines Rohlings von einem Metallband zur Herstellung von Scharnierbeschlag

Country Status (7)

Country Link
EP (1) EP0672478B1 (de)
AT (1) ATE199508T1 (de)
DE (1) DE69520237T2 (de)
ES (1) ES2155868T3 (de)
IT (1) IT1269451B (de)
PT (1) PT672478E (de)
SI (1) SI0672478T1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1275815B1 (it) 1995-10-27 1997-10-17 Gi Emme S R L Di Procedimento perfezionato per la tranciatura da nastro metallico di sbozzati destinati alla fabbricazione in automatico di componenti
IT1319203B1 (it) * 2000-10-13 2003-09-26 Gi Emme S R L Di Procedimento per la tranciatura rapida da nastro metallico di unosbozzato.
IT1319204B1 (it) * 2000-10-13 2003-09-26 Gi Emme S R L Di Procedimento per la tranciatura da nastro metallico di uno sbozzato.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1538257A (fr) * 1967-09-29 1968-08-30 Schuler Gmbh L Dispositif de découpage pour presses
FR2191954B1 (de) * 1972-07-07 1976-06-11 Weingarten Ag Maschf
US4114218A (en) * 1977-05-23 1978-09-19 Larry Stuart Pendell Method of forming flat four-sided fastener parts having an opening therein
GB8420343D0 (en) * 1984-08-10 1984-09-12 Workman J Metal pressing and stamping
IT1251869B (it) * 1991-09-25 1995-05-26 Gi Emme S R L Di Procedimento per la tranciatura da nastro metallico di uno sbozzato

Also Published As

Publication number Publication date
DE69520237T2 (de) 2001-08-09
ITMI940088A1 (it) 1995-07-21
SI0672478T1 (en) 2001-06-30
ATE199508T1 (de) 2001-03-15
ITMI940088A0 (it) 1994-01-21
ES2155868T3 (es) 2001-06-01
EP0672478A1 (de) 1995-09-20
DE69520237D1 (de) 2001-04-12
PT672478E (pt) 2001-07-31
IT1269451B (it) 1997-04-01

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