EP0661118B1 - Procédé de découpage d'une ébauche d'une bande métallique pour la fabrication d'une charnière pour les meubles - Google Patents

Procédé de découpage d'une ébauche d'une bande métallique pour la fabrication d'une charnière pour les meubles Download PDF

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Publication number
EP0661118B1
EP0661118B1 EP94203505A EP94203505A EP0661118B1 EP 0661118 B1 EP0661118 B1 EP 0661118B1 EP 94203505 A EP94203505 A EP 94203505A EP 94203505 A EP94203505 A EP 94203505A EP 0661118 B1 EP0661118 B1 EP 0661118B1
Authority
EP
European Patent Office
Prior art keywords
blank
station
strip
metal strip
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.)
Expired - Lifetime
Application number
EP94203505A
Other languages
German (de)
English (en)
Other versions
EP0661118A1 (fr
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
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Application filed by Digiemme Srl filed Critical Digiemme Srl
Priority to SI9430291T priority Critical patent/SI0661118T1/xx
Publication of EP0661118A1 publication Critical patent/EP0661118A1/fr
Application granted granted Critical
Publication of EP0661118B1 publication Critical patent/EP0661118B1/fr
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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 a metal strip a blank 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. In this manner the scrap is reduced to a minimum.
  • material must always be left between one blank and the next in order to be able to perform the actual blanking operation.
  • Such systems are disclosed for example by DE-A-27 50 940 and by GB-A-1 193 666.
  • These two known punching devices each use two tool sets, that means, two sets of upper die and lower die. By shifting the metal strip between the two tool sets for consecutive punching steps blanks are punched out interlockingly from the metal strip. Although the amount of scrap left by using these known methods is reduced, there is still some scrap left between the cutting lines. Further disadvantages of these known methods are that two punching devices with two tool sets are necessary and that it is difficult to position the two tool sets and the metal strip relative to each other.
  • 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. This object is attained by a method in accordance with the accompanying independent claim 1, preferred embodiments being defined by the dependent claims.
  • 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 blank defined by the hatched region 11 of Figure 1 is punched from the strap 10 without leaving any scrap at all.
  • 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 1a 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 strip 10 is advanced longitudinally through a step X in the direction of the arrow F and shifted laterally through a step Y in a direction perpendicular thereto in accordance with the arrow F1, into the position shown in Figure 2 in which a second blank defined by the hatched region 12 is punched out without leaving any scrap.
  • the strip 10 is advanced in the direction of the arrow F from the position shown in Figure 1 to the position shown in Figure 2 through a distance X equal to one half the length of the blank 12 to be obtained, the lateral shift in the direction of the arrow F1 being through a distance Y which varies according to the configuration of the blank and of the final piece to be formed.
  • the blank 12, separated from the strip 10 as shown in Figure 2a, is then rotated, for example through 90°, into the position shown in Figure 2b suitable for a subsequent operation, such as a drawing operation.
  • the strip 10 is advanced longitudinally through a step X in the direction of the arrow F and shifted laterally through a step Y in a direction perpendicular thereto in accordance with the arrow F2, into the position shown in Figure 3 in which a third blank defined by the hatched region 13 is punched out without leaving any scrap.
  • the blank 13 is then conveyed and manipulated into the positions shown in Figures 3a and 3b exactly as in the case of the blanks 11 and 12. This third stage is identical to the first.
  • Figures 4 and 4a show a second embodiment of the method of the invention in which the strip 10 is fed in the direction of the arrow F3, this being perpendicular to the direction indicated by the arrow F4 in which the punched blank 14 is advanced.
  • the blank 14 punched out in the blanking station of Figure 4 is removed and transferred to a second station shown in Figure 4a already in a position suitable for the next operation.
  • Figures 5, 5a, 5b show an embodiment of the method in which the blank 15 punched from the strip 10 is removed and transferred to the positioning station of Figure 5a in which the blank 15 is rotated through 180° in accordance with the arrow F5, into the position shown in Figure 5b suitable for the next operation.
  • Figures 6 and 6a show an embodiment of the method analogous to that of Figures 5-5b, but in which the blank 16 punched from the strip 10 is removed and during its transfer to the next station shown in Figure 6a is orientated in accordance with the arrow F6 into a position already suitable for the next operation.
  • the die assembly is not shown in detail as its construction lies within the scope of the expert of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Hinges (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Claims (8)

  1. Procédé de découpage d'une ébauche (11, 12, 13) destinée notamment, mais non exclusivement, à la fabrication d'une pièce de charnière pour meuble, à partir d'une bande métallique (10), au moyen d'un ensemble formant matrice (17), comprenant les étapes suivantes consistant à :
    dans un premier poste, découper ladite ébauche (11) à partir de la bande métallique (10) ;
    retirer l'ébauche (11) découpée et la transférer à un second poste dans une position appropriée ;
    en même que s'effectue le transfert de ladite ébauche (11), faire avancer la bande (10) longitudinalement sur une distance X dans une direction F et la positionner latéralement en la décalant, par rapport audit ensemble formant matrice (17), sur une distance Y dans une direction F1 ;
    découper une seconde ébauche (12) ;
    retirer l'ébauche (12) découpée et la transférer dans ledit second poste dans une position appropriée ;
    en même que s'effectue le transfert de ladite ébauche (12), faire avancer la bande (10) longitudinalement sur une distance supplémentaire X dans une direction F et la positionner latéralement en la déplaçant par rapport à l'ensemble formant matrice (17), sur une distance Y dans la direction F2 ;
    découper une troisième ébauche (13), etc., de manière à produire d'autres ébauches (11, 12),
    caractérisé en ce
    qu'on déplacer ladite bande (10) latéralement par rapport audit ensemble formant matrice dans lesdites directions F1 et F2 sur une distance Y qui est déterminée en fonction de la configuration des ébauches (11, 12, 13) devant être formées de sorte que dans ledit premier poste, lors d'une première étape l'ensemble formant matrice agit sur un côté de la bande métallique (10) et, dans une seconde étape, agit sur l'autre côté de la bande métallique (10), etc., de sorte que les lignes successives de coupe se rejoignent et qu'il ne subsiste aucune bavure, la distance Y ne dépassant pas la largeur de la bande (10).
  2. Procédé selon la revendication 1, caractérisé en ce que l'ébauche (11, 12, 13) est orientée dans ledit second poste de manière à être dans une position appropriée pour l'opération suivante.
  3. Procédé selon la revendication 2, caractérisé en ce que l'ébauche (11, 12, 13) dans ledit second poste est pivotée de 90° autour d'un axe perpendiculaire au plan défini par les ébauches.
  4. Procédé selon la revendication 1, caractérisé en ce que l'orientation de l'ébauche (11, 12, 13) s'effectue pendant son transfert dudit premier poste audit second poste.
  5. Procédé selon la revendication 1, caractérisé en ce que la bande métallique (10) est entrainée dans une direction (F3) perpendiculaire à l'axe d'avance (F4) de l'ébauche (14, 15, 16).
  6. Procédé selon la revendication 5, caractérisé en ce que l'ébauche (14, 15, 16) est orientée, dans ledit second poste, dans une position convenant pour l'opération suivante.
  7. Procédé selon la revendication 6, caractérisé en ce que l'ébauche (14, 15, 16) dans ledit second poste est pivotée sur 180° autour d'un axe perpendiculaire au plan défini par les ébauches.
  8. Procédé selon la revendication 5, caractérisé en ce que l'orientation de l'ébauche (14, 15, 16) s'effectue pendant son transfert dudit premier poste audit second poste.
EP94203505A 1993-12-14 1994-12-02 Procédé de découpage d'une ébauche d'une bande métallique pour la fabrication d'une charnière pour les meubles Expired - Lifetime EP0661118B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9430291T SI0661118T1 (en) 1993-12-14 1994-12-02 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
ITMI932608 1993-12-14
IT93MI002608A IT1264985B1 (it) 1993-12-14 1993-12-14 Procedimento per la tranciatura da nastro metallico di uno sbozzato, destinato particolarmente ma non esclusivamente alla produzione di una

Publications (2)

Publication Number Publication Date
EP0661118A1 EP0661118A1 (fr) 1995-07-05
EP0661118B1 true EP0661118B1 (fr) 1999-11-10

Family

ID=11367319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94203505A Expired - Lifetime EP0661118B1 (fr) 1993-12-14 1994-12-02 Procédé de découpage d'une ébauche d'une bande métallique pour la fabrication d'une charnière pour les meubles

Country Status (6)

Country Link
EP (1) EP0661118B1 (fr)
AT (1) ATE186483T1 (fr)
DE (1) DE69421601T2 (fr)
ES (1) ES2138644T3 (fr)
IT (1) IT1264985B1 (fr)
SI (1) SI0661118T1 (fr)

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
IT1319204B1 (it) * 2000-10-13 2003-09-26 Gi Emme S R L Di Procedimento per la tranciatura da nastro metallico di uno sbozzato.
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552002C3 (de) * 1966-03-02 1979-01-04 Fried. Krupp Gmbh, 4300 Essen Stanzvorrichtung zum Ausschneiden von Platinen im Zickzack
DE1552089B1 (de) * 1966-10-14 1970-12-23 Schuler Gmbh L Stanzvorrichtung zum Ausschneiden von Platinen wechselweise in zwei Reihen
DE2412260A1 (de) * 1974-03-14 1975-09-18 Guenter Zierpka Vorrichtung zum schneiden und positionieren von platinen in pressen
DE2750940A1 (de) * 1977-11-15 1979-05-17 Krupp Gmbh Vorrichtung zur herstellung von platinen mit zwei ortsfest angeordneten, wechselweise mit einem blechband beschickbaren schneidstationen
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
ITMI932608A1 (it) 1995-06-14
ATE186483T1 (de) 1999-11-15
EP0661118A1 (fr) 1995-07-05
DE69421601D1 (de) 1999-12-16
IT1264985B1 (it) 1996-10-17
ES2138644T3 (es) 2000-01-16
DE69421601T2 (de) 2000-05-25
SI0661118T1 (en) 2000-02-29
ITMI932608A0 (it) 1993-12-14

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