EP1197276B1 - Procedure for punching a blank from a metallic band - Google Patents

Procedure for punching a blank from a metallic band Download PDF

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Publication number
EP1197276B1
EP1197276B1 EP01203825A EP01203825A EP1197276B1 EP 1197276 B1 EP1197276 B1 EP 1197276B1 EP 01203825 A EP01203825 A EP 01203825A EP 01203825 A EP01203825 A EP 01203825A EP 1197276 B1 EP1197276 B1 EP 1197276B1
Authority
EP
European Patent Office
Prior art keywords
punching
blank
station
blanks
band
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
EP01203825A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1197276A1 (en
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 SI200130503T priority Critical patent/SI1197276T1/sl
Publication of EP1197276A1 publication Critical patent/EP1197276A1/en
Application granted granted Critical
Publication of EP1197276B1 publication Critical patent/EP1197276B1/en
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

  • the present invention refers to a procedure for the punching of a blank, which is intended, particularly but not exclusively, for the manufacture of a detail of a furniture hinge, from a metallic band, according to the preamble of claim 1.
  • the systems which are generally adopted are those in which the punching of the blank is carried out according to a design such that on the metallic band the punched shapes fit together, and wherein the punching operation is carried out on the band which moves linearly or in zigzags.
  • the general purpose of the present invention is to overcome the drawbacks quoted above of the prior art in an extremely simple, cost-effective and particularly functional way.
  • a butted metallic band wholly indicated with 10, is made to move forward step by step in the direction of the arrow F, through any apparatus suitable for the purpose, which is not illustrated here since it is known to men skilled in the art (figure 1).
  • a blank 12 is punched from the band 10 in a punching station, wholly indicated with 11 (figures 11, 12 and 13) without any swarf.
  • Such a blank can have different forms from that shown in figure 2, but its outline must necessarily fit together with that of another blank 13 punched in the same machine in a subsequent punching operation (figure 6).
  • said blank 12 is rotated by a suitable angle to be arranged in a suitable position for a subsequent processing.
  • the blank 12 is discharged through a suitable apparatus amongst those which are known, moving it forward towards an appropriate discharge direction.
  • the new positioning of the band 10 on the punching station 11 takes place to start the punching operation of the second blank 13.
  • the band 10 is made to move forward longitudinally by one step X according to the arrow F and laterally by one step Y according to the arrow F1 (figure 4) into the position of figure 5.
  • the step X in this example, corresponds to half the length of the blank to be formed, the distance Y is also variable according to the configuration of the blank, as well as the final piece.
  • the punching operation described concerns a first butting cut starting from a band with a rectilinear profile 10', that which has been described regarding the punching from a butted band 10 remains valid (figure 9). Moreover, the cutting outline will have the same length and, moreover, will produce a swarf 14, equal to half a blank, and one butted band 10. The swarf will then be moved and discharged from the punching station in completely the same way a that which has already been illustrated, however without the need for carrying out a rotation.
  • a punching station of the metallic band 10 which is the object here is wholly indicated with 11 and comprises a mobile part and a fixed part, which can be a punch 15 and a matrix 16 respectively, or vice-versa, as well as a device for picking up an individual blank 12 and 13.
  • the pick-up device consists of an extractor 17, for example with a cylinder form.
  • the extractor is capable of rotating the blanks by a suitable angle in planes 19 parallel to a feeding plane 18, as well as of moving said blanks at a right angle to the same plane 19.
  • the matrices 16 and the rod 15 can make relative reciprocal displacements perpendicular to the feeding plane 18, which vary according to the different embodiments of this invention.
  • the feeding plane 18 is a horizontal plane and the displacements of the mobile parts are vertical.
  • a first embodiment of a punching station suitable for carrying out the procedure according to the present invention is shown in plan in figure 10 and sectioned in figure 11.
  • the punching station 11 described hereafter as an example, exhibits the fixed structure, the matrix 16, arranged on a lower plane than the feeding plane 18, the mobile structure, on the other hand, consisting of the punch 15.
  • the punching operation starts with the zigzag feeding of the continuous butted metallic band 10 in the direction of the arrow and in one of the perpendicular directions F1 or F2, up to, for example, the position indicated in figure 10 with a dotted line.
  • the punch 15 which in this case is mobile, interacting with the fixed structure, i.e. the matrix 16, acts upon the metallic band 10 causing the punching of a first blank 12.
  • the continuous band 10 repositions itself on the feeding plane 18 and the extractor 17 moves the blank 12 onto a different plane 19.
  • the orientation takes place by alternatively rotating the blank 12 by 90° in a clockwise or anticlockwise direction to position it in a suitable position according to the criteria described previously.
  • the blank, discharged through a movement forward in the direction F, is indeed positioned symmetrically with respect to the advancing direction F with the outline causing the greatest encumbrance turned facing out of the punching station.
  • the procedure of the present invention can be carried out through a second embodiment wherein the actuation of the mobile structure, the punch 15, punches a blank 13 from the band 10 by interacting with the matrix 16, which is situated on the feeding plane 18 of the band.
  • the rotation of the extractor 17 and the discharge of the blank take place on a lower plane 19 to the feeding plane of the band.
  • a third possible embodiment to carry out the procedure for punching the blanks 12 or 13 from a metallic band 10, object of the present invention, has the fixed structure consisting of the punch 15 and the mobile structure consisting of the matrix 16.
  • the punching always takes place through the intervention of the mobile part on the band 10 which interacts with the fixed part.
  • the extractor element 17 keeps the functions of the perpendicular movement to the feeding plane 18, in this case through the lifting with, for example, magnetic elements and, above all, of rotating the punched blank (figure 12).
  • a fourth embodiment, schematised in figures 15 and 16 distinguishes itself from the previous ones in that the punched blank is discharged from the punching station along a direction F3, perpendicular to the feeding direction F.
  • the rotation is carried out in the same punching station through the operation of the extractor 17.
  • the blank is alternatively rotated by an angle of 0° or of 180° to be arranged with the outline causing the greatest encumbrance turned towards the outside of the punching station.
  • the main advantage of the procedure which is the object of the present invention is that it has eliminated the need to devote a station exclusively to the orientation of the punched blanks. This is possible since the punching station is also capable of carrying out the aforementioned rotating operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Laminated Bodies (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP01203825A 2000-10-13 2001-10-09 Procedure for punching a blank from a metallic band Expired - Lifetime EP1197276B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130503T SI1197276T1 (sl) 2000-10-13 2001-10-09 Postopek izsekavanja surovca iz kovinskega traku

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI202208 2000-10-13
ITMI20002208 2000-10-13
IT2000MI002208A IT1319204B1 (it) 2000-10-13 2000-10-13 Procedimento per la tranciatura da nastro metallico di uno sbozzato.

Publications (2)

Publication Number Publication Date
EP1197276A1 EP1197276A1 (en) 2002-04-17
EP1197276B1 true EP1197276B1 (en) 2005-12-07

Family

ID=11445954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01203825A Expired - Lifetime EP1197276B1 (en) 2000-10-13 2001-10-09 Procedure for punching a blank from a metallic band

Country Status (6)

Country Link
EP (1) EP1197276B1 (sl)
AT (1) ATE311948T1 (sl)
DE (1) DE60115574T2 (sl)
ES (1) ES2254319T3 (sl)
IT (1) IT1319204B1 (sl)
SI (1) SI1197276T1 (sl)

Family Cites Families (4)

* 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
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
DE60115574D1 (de) 2006-01-12
DE60115574T2 (de) 2006-08-24
IT1319204B1 (it) 2003-09-26
ITMI20002208A1 (it) 2002-04-13
ES2254319T3 (es) 2006-06-16
EP1197276A1 (en) 2002-04-17
SI1197276T1 (sl) 2006-06-30
ATE311948T1 (de) 2005-12-15

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