EP0490018A1 - Méthode pour fabriquer des pièces planes - Google Patents

Méthode pour fabriquer des pièces planes Download PDF

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Publication number
EP0490018A1
EP0490018A1 EP90890320A EP90890320A EP0490018A1 EP 0490018 A1 EP0490018 A1 EP 0490018A1 EP 90890320 A EP90890320 A EP 90890320A EP 90890320 A EP90890320 A EP 90890320A EP 0490018 A1 EP0490018 A1 EP 0490018A1
Authority
EP
European Patent Office
Prior art keywords
film
blanks
cut
cutting
blank
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.)
Withdrawn
Application number
EP90890320A
Other languages
German (de)
English (en)
Inventor
Gottfried Dipl.-Ing. Blaimschein
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.)
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Original Assignee
GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
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 GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG filed Critical GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
Priority to EP90890320A priority Critical patent/EP0490018A1/fr
Publication of EP0490018A1 publication Critical patent/EP0490018A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/54—Article strippers, e.g. for stripping from advancing elements

Definitions

  • the invention relates to a method for producing flat workpieces, according to which the workpieces are cut out as blanks from flat material covered with foil and the foils are then pulled off the blanks as required.
  • a mechanical removal of the workpiece from a cover film can only be accomplished in the course of the cutting process according to the known manufacturing methods, for which purpose after cutting out the blanks, these are pressed by a pressure plate spanned by an adhesive film Unrolling and peeling movement can be removed from the remaining waste and at the same time from the bottom film (EP-A-0 388 398).
  • the individual film removal of differently shaped blanks is not possible with such a removal method, which requires the pressure plate shape to be adapted to the blank shape.
  • the invention is therefore based on the object of specifying a method of the type described at the outset which ensures rational removal of the film at any time after the blanks have been cut out.
  • the invention solves this problem in that the blanks are cut out at least in regions with a material protrusion to the edge profile of the respective workpiece and before or after this cut the protrusions are cut without cutting through the film on the underside, following the workpiece edge edge profile, and in that the blanks are used to remove the foils the surface facing away from the film is detected on the one hand within the course of the workpiece edge and on the other hand at the material protrusion, and blanks and material protrusions are moved relative to one another in the sense of pulling back and pulling the film away from the cut.
  • the removal of the film is already prepared here during the production of the blanks, in that a removal aid for gripping the film is generated by leaving the excess material.
  • the film Since the film is not cut along the edge of the workpiece along the edge of the workpiece, this film results in a cohesion between the projection and the blank, so that the entire film with the material projection can be removed from the remaining blank, for which purpose only a corresponding relative movement between the blank and Excess material is necessary.
  • the cuts can therefore be made as desired the film is removed from the cutting table and stored well protected, transported on or treated in some other way and can be efficiently removed from the film at the appropriate time when the free cutting surface is required due to the prepared material overhang. All that is needed is the laying device, which is usually available anyway, with which the like or vacuum suction cup or needle gripper. the blanks taken and a clamping device or the like. to fix the supernatant, whereupon the film is pulled off the blank after the fixation of the protrusion by a suitable further movement of the blanks obliquely over the clamping device.
  • the lower film can first be removed from the blank with the method according to the invention, whereupon the material cut is then separated from the upper film, which preferably remains held in place in the laying device, by an additional process step.
  • the cutting and trimming are carried out in a continuous cutting process with a change in the depth of cut.
  • the cutting tool can be continued immediately after cutting out the blank, in which it cuts the material and film together, by reducing the depth of cut along the excess material and only cuts the material and not the bottom film.
  • a blank 3 corresponding to the workpiece shape is cut out from the film-covered flat material, the film 2 if necessary, is only removed from the flat material 1 after the cutting process in order to allow the advantages of the film to benefit the blank 3 as long as possible.
  • a removal aid is already prepared during the cutting of the blank 3, by initially cutting a flap-like material protrusion 4 to the actual edge course 5 of the workpiece, which protrusion, when the blank is cut out 4 through a cut 6 made to depth is cut without cutting through the lower film 2, now following the edge 5 of the workpiece.
  • This protrusion 4 results, so to speak, in a pull-off tab which remains connected to the blank 3 via the bottom sheet 2 and, through the possibility of also grasping the sheet 2 with this tab, also ensures that the bottom sheet 2 is subsequently pulled off the blank 3 at any time.
  • the blank 3 is gripped with a laying device 7, which is attached to the top of the blank 3 via vacuum suction cups 8.
  • a laying device 7 which fixes this protrusion, and by moving the laying device 7 diagonally upwards over the clamping device 9, the protrusion 4 held in the clamp is together with the Slide 2 removed from the blank 3.
  • the removed film 2 falls into a waste box 10 combined with the clamping device 9 and the laying device 7 can now feed the film-free blank 3 to a corresponding further treatment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP90890320A 1990-12-11 1990-12-11 Méthode pour fabriquer des pièces planes Withdrawn EP0490018A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90890320A EP0490018A1 (fr) 1990-12-11 1990-12-11 Méthode pour fabriquer des pièces planes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90890320A EP0490018A1 (fr) 1990-12-11 1990-12-11 Méthode pour fabriquer des pièces planes

Publications (1)

Publication Number Publication Date
EP0490018A1 true EP0490018A1 (fr) 1992-06-17

Family

ID=8206114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890320A Withdrawn EP0490018A1 (fr) 1990-12-11 1990-12-11 Méthode pour fabriquer des pièces planes

Country Status (1)

Country Link
EP (1) EP0490018A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917648U (de) * 1962-03-05 1965-06-10 Dymo Ind Inc A California Corp Mehrschichtstreifenstueck.
US4015034A (en) * 1976-06-07 1977-03-29 Benjamin Edward Smolen Register for index marking article
DE3404321A1 (de) * 1984-02-08 1985-11-14 Sigri GmbH, 8901 Meitingen Vorrichtung und verfahren zum abziehen von deckpapier
GB2218682A (en) * 1988-05-19 1989-11-22 Wallace Business Services Limi Peel-off self adhesive stickers and labels
EP0388398A2 (fr) * 1989-03-17 1990-09-19 Gottfried Dipl.-Ing. Blaimschein Dispositif pour retirer une pièce plate d'un film adhésif

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1917648U (de) * 1962-03-05 1965-06-10 Dymo Ind Inc A California Corp Mehrschichtstreifenstueck.
US4015034A (en) * 1976-06-07 1977-03-29 Benjamin Edward Smolen Register for index marking article
DE3404321A1 (de) * 1984-02-08 1985-11-14 Sigri GmbH, 8901 Meitingen Vorrichtung und verfahren zum abziehen von deckpapier
GB2218682A (en) * 1988-05-19 1989-11-22 Wallace Business Services Limi Peel-off self adhesive stickers and labels
EP0388398A2 (fr) * 1989-03-17 1990-09-19 Gottfried Dipl.-Ing. Blaimschein Dispositif pour retirer une pièce plate d'un film adhésif

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