EP0770436B1 - Verfahren zum Stanzen eines Rohlings aus einem Metallband für die automatische Herstellung von Bestandteilen aus Metall - Google Patents

Verfahren zum Stanzen eines Rohlings aus einem Metallband für die automatische Herstellung von Bestandteilen aus Metall Download PDF

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Publication number
EP0770436B1
EP0770436B1 EP96202948A EP96202948A EP0770436B1 EP 0770436 B1 EP0770436 B1 EP 0770436B1 EP 96202948 A EP96202948 A EP 96202948A EP 96202948 A EP96202948 A EP 96202948A EP 0770436 B1 EP0770436 B1 EP 0770436B1
Authority
EP
European Patent Office
Prior art keywords
blank
metal strip
punching
blanks
pieces
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
EP96202948A
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English (en)
French (fr)
Other versions
EP0770436A1 (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 SI9630396T priority Critical patent/SI0770436T1/xx
Publication of EP0770436A1 publication Critical patent/EP0770436A1/de
Application granted granted Critical
Publication of EP0770436B1 publication Critical patent/EP0770436B1/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 from metal strip a blank intended, particularly but not exclusively, for manufacturing a component (flange) of a furniture hinge, and drawer guides.
  • 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.
  • a first method uses progressive die assemblies, whereas the second method uses retake die assemblies for the blank formed in a preceding die.
  • the first system using progressive die assemblies, has the drawback of dies and punches of relatively complex construction with a very thin and hence delicate cutting section, because the blanks to be cut from the metal strip must be as close as possible to each other if maximum material saving is to be achieved.
  • the metal strip must have a width sufficient to maintain the pieces joined together during their progression from one die to the next. Hence the material saving is relative.
  • EP-A-661118 describes a method for punching from metal strip, by means of a die assembly, a blank intended particularly but not exclusively for producing a furniture hinge casing, characterised by comprising the following stages:
  • EP-A-672478 describes a method for punching from metal strip, by means of a die assembly, a blank intended particularly but not exclusively for producing a furniture hinge casing, characterised by comprising the following stages:
  • the general object of the present invention is to provide a method for punching a blank from metal strip with maximum material saving, using an extremely simple apparatus.
  • the reference numeral 10 indicates a metal strip which 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 punch indicated schematically by 11 is used to punch out simultaneously a first blank 12, bounded by the dashed region of Figure 1, and a second blank 13 (different from the first 12) indicated by full lines (without dashes).
  • the two blanks 12, 13 are separated from each other and from the metal strip 10, as shown in Figure 2, to be carried to a subsequent working station where, as shown in Figures 3 and 4, from said mutually different blanks 12, 13 there are simultaneously punched out two identical pieces 14, 15 ready for subsequent working, for example bending and drilling.
  • the semi-finished pieces 14, 15 are suitable for forming furniture hinge flanges.
  • two pieces for forming drawer guides can be obtained by punching from a strip 20, advancing in the direction of the arrow F1, using a punch indicated by dashed and dotted lines at 21, as shown in Figure 5 of the drawings.
  • the punch 21 simultaneously punches from the strip 20 two blanks 22, 23 which are separated, as shown in Figure 6.
  • the blank 22 is already in the shape of the desired piece, whereas the parts 25, 26, 27, 28 are punched from the blank 23 to obtain the piece 24, as shown in Figures 7 and 8.
  • the pieces 22, 24 are mutually different, being suitable for forming drawer guides by subsequent bending and drilling, however said pieces 22, 24 could also be identical.
  • the production method allows operations to be carried out within the boundary of each blank before it is punched out, such as drilling, drawing, stamping etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Threshing Machine Elements (AREA)
  • Press Drives And Press Lines (AREA)
  • Adornments (AREA)

Claims (7)

  1. Verfahren zum Ausstanzen von Rohlingen aus einem Metallstreifen (10, 20), die zur automatischen Herstellung von Metallbauteilen durch anschließende Arbeitsgänge vorgesehen sind, dadurch gekennzeichnet, daß es die folgenden Stufen umfaßt, daß:
    an einer erste Station aus dem Metallstreifen (10, 20) mindestens ein erster Rohling (12, 22) ausgestanzt und herausgelöst wird, während gleichzeitig aus dem Metallstreifen (10, 20) mindestens ein zweiter Rohling (13, 23) herausgelöst wird, und
    die Rohlinge (12, 13; 22, 23) automatisch zu einer nachfolgenden Station übertragen werden, an der aus den Rohlingen (12, 13; 22, 23) durch weiteres Stanzen zwei Stücke (14, 15; 22, 24) erhalten werden, die bereit sind, anschließende Arbeitsgänge zu erfahren.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Rohlinge (12, 22; 13, 23) einander identisch sind.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Rohlinge (12, 22; 13, 23) voneinander verschieden sind.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Stücke (14, 15; 22, 24) einander identisch sind.
  5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Stücke (14, 15; 22, 24) voneinander verschieden sind.
  6. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Stücke (14, 15) dafür vorgesehen sind, Möbelscharnierschenkel herzustellen.
  7. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Stücke (22, 24) dafür vorgesehen sind, Schubladenführungen herzustellen.
EP96202948A 1995-10-27 1996-10-22 Verfahren zum Stanzen eines Rohlings aus einem Metallband für die automatische Herstellung von Bestandteilen aus Metall Expired - Lifetime EP0770436B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9630396T SI0770436T1 (en) 1995-10-27 1996-10-22 Method for punching a blank from a metal strip intended for automatically manufacturing metal components

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95MI002217A IT1275815B1 (it) 1995-10-27 1995-10-27 Procedimento perfezionato per la tranciatura da nastro metallico di sbozzati destinati alla fabbricazione in automatico di componenti
ITMI952217 1995-10-27

Publications (2)

Publication Number Publication Date
EP0770436A1 EP0770436A1 (de) 1997-05-02
EP0770436B1 true EP0770436B1 (de) 2001-12-19

Family

ID=11372439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96202948A Expired - Lifetime EP0770436B1 (de) 1995-10-27 1996-10-22 Verfahren zum Stanzen eines Rohlings aus einem Metallband für die automatische Herstellung von Bestandteilen aus Metall

Country Status (6)

Country Link
EP (1) EP0770436B1 (de)
AT (1) ATE211034T1 (de)
DE (1) DE69618142T2 (de)
ES (1) ES2165467T3 (de)
IT (1) IT1275815B1 (de)
SI (1) SI0770436T1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1296574B1 (it) * 1997-11-27 1999-07-14 Gaetano Donatiello Procedimento per la tranciatura di guide metalliche per cassetti
ITMI20012329A1 (it) * 2001-11-07 2003-05-07 Emme S R L Di Di Metodo ed apparato per la tranciatura in successione da nastro metallico di un semilavorato o di uno sbozzato
CN113500135A (zh) * 2021-07-26 2021-10-15 东莞市嘉达磁电制品有限公司 一种盘式电机矽钢片加工工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2637541B1 (de) * 1976-08-20 1977-07-21 Horst Schondelmaier Verfahren und Vorrichtung zum Stanzen von laenglichen Blechsegmenten zur Herstellung von Rohrboegen
US4210041A (en) * 1979-02-08 1980-07-01 Enrique Mitman Method for cutting a plurality of identical, irregular, non-polygonal pieces from material with minimum waste
IT1248585B (it) * 1991-06-28 1995-01-19 F 40 Spa Guide per cassetti e metodo di produzione di esse
IT1251869B (it) * 1991-09-25 1995-05-26 Gi Emme S R L Di Procedimento per la tranciatura da nastro metallico di uno sbozzato
IT1264985B1 (it) 1993-12-14 1996-10-17 Gi Emme S R L Di Procedimento per la tranciatura da nastro metallico di uno sbozzato, destinato particolarmente ma non esclusivamente alla produzione di una
IT1269451B (it) 1994-01-21 1997-04-01 Gi Emme S R L Di 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

Also Published As

Publication number Publication date
SI0770436T1 (en) 2002-04-30
DE69618142T2 (de) 2002-06-20
IT1275815B1 (it) 1997-10-17
ES2165467T3 (es) 2002-03-16
DE69618142D1 (de) 2002-01-31
EP0770436A1 (de) 1997-05-02
ATE211034T1 (de) 2002-01-15
ITMI952217A1 (it) 1997-04-27
ITMI952217A0 (de) 1995-10-27

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