EP0585982A1 - Vorrichtung zum Falten einer Kante des Oberleders auf einer Leiste von einer Schuhherstellungsmaschine - Google Patents

Vorrichtung zum Falten einer Kante des Oberleders auf einer Leiste von einer Schuhherstellungsmaschine Download PDF

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Publication number
EP0585982A1
EP0585982A1 EP93201230A EP93201230A EP0585982A1 EP 0585982 A1 EP0585982 A1 EP 0585982A1 EP 93201230 A EP93201230 A EP 93201230A EP 93201230 A EP93201230 A EP 93201230A EP 0585982 A1 EP0585982 A1 EP 0585982A1
Authority
EP
European Patent Office
Prior art keywords
plates
last
plate
angles
vamp
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Withdrawn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
EP93201230A
Other languages
English (en)
French (fr)
Inventor
Alessandro Zorzolo
Carlo Bianchi
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.)
Officine Meccaniche Molina and Bianchi SpA
Original Assignee
Officine Meccaniche Molina and Bianchi SpA
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 Officine Meccaniche Molina and Bianchi SpA filed Critical Officine Meccaniche Molina and Bianchi SpA
Publication of EP0585982A1 publication Critical patent/EP0585982A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D23/00—Single parts for pulling-over or lasting machines
    • A43D23/02—Wipers; Sole-pressers; Last-supports; Pincers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D119/00—Driving or controlling mechanisms of shoe machines; Frames for shoe machines

Definitions

  • the present invention relates to machines for manufacturing shoes and, in particular, to apparatus for folding the edge of a vamp on a last so that the edge of this vamp may be glued to a support sole arranged on the last.
  • Machines are known that carry out various stages in the assembly of the front part of a shoe on a last.
  • a machine of this type, together with an assembly procedure, is described, for example, in the Italian patent No. 912328 held by the present applicant.
  • the basic stages in the manufacture consist in arranging the vamp on the last to which a support sole or insole has been fixed in readiness, in grasping the edges of the vamp with a plurality of pincers mounted around the last, in stretching the vamp on the last by relative movement of the last and the pincers, in clamping the vamp on the last by means of a semi-annular member which exerts pressure on the edge of the last, in gradually loosening the grip of the pincers on the edge of the vamp, in folding the edge of the vamp under the last by means of two movable shaped plates and in pressing the edge of the vamp onto the sole by means of the plates thereby sticking the vamp to the sole with glue previously applied between the two parts.
  • One acutely felt requirement in this type of manufacture is an ability to switch rapidly from assembling footwear of a given style and size to assembling footwear of another style or size, or from assembling right shoes to assembling left shoes.
  • a change of this kind involves modifying the attitude, the position and the configuration of various members and devices of the machine.
  • the plates must be adaptable by adjustment of the profiles of their inner edges so that these edges correspond as closely as possible to the front part of the shoe to be assembled.
  • the plates are pivoted about a common centre of rotation like jaws and are moved in a direction longitudinally of the shoe from a rest position, at a certain distance from the last, to a working position in which their inner edge interacts with the last.
  • the two plates move from an open position to a closed position thanks to the action of appropriate cams, the profiles of which determine their relative orientation.
  • Apparatus for folding the edge of a vamp is also known in which the initial orientation of the plates may be set by means of rods of variable length which may be adjusted when the machine itself is adjusted to adapt it to a particular style or size of shoe to be assembled. In this case also, adjustment takes quite some time and, in any case, permits only a modest range of adjustment.
  • the object of the present invention is to provide an apparatus for folding the edge of a vamp on a last in which the orientation of the plates may be adjusted within a wide range and is independent of the movement from the rest position to the working position.
  • each plate 10 has a support part 11, constituted by two elements 11a and 11b ( Figure 2), and an interchangeable part 12 arranged between the two elements 11a, 11b.
  • This part 12 is fixed mechanically to the support part 11 by appropriate fixing means, not shown, and may be replaced, in known manner, in order to adapt the machine as necessary to the manufacture of a broad range of styles.
  • the interchangeable part 12 has an inwardly tapered edge 12a defined by a curve which substantially follows the profile of the last and therefore of the shoe to be assembled. Part of the last is shown schematically only in Figure 1 where it is indicated 30.
  • the plates 10 are mounted on support and guide means, generally indicated 16, which include a base element 17 and a support structure 18 slidable on two parallel guides 20.
  • the base element 17 has two part-circular slots 13, centred on the point C, into which two pairs of guide pins 14 fixed to the support parts 11 of the plates are inserted.
  • Each of the parts 11 has a rack 15 along part of its outer edge, extending through an arc of a circle having its centre at the point C.
  • Two electric motors 21 are mounted on the support structure 18 and pinions 22 splined to their respective shafts engage the racks 15.
  • An electric motor 23, only partly shown in the drawings, is fixed to the base of the machine indicated at 24 and coupled to the structure 18 by means of a recirculating-ball screw of which part of the screw is visible in Figures 3 and 4 and indicated 23a.
  • the guides 20 are also fixed to the base of the machine by means, not shown, so that the starting of the motor 23 causes the entire plate-support assembly to move on the guides thereby moving the plates 10 from a rest position remote from the last, when the screw is retracted, to a working position on the last when the screw is extended.
  • Both the electric motor 23 and the electric motors 21 are connected through appropriate connection and control means to a control unit, for example a programmable electronic unit, so that they may be operated by the unit independently of each other according to a predetermined programme.
  • a control unit for example a programmable electronic unit
  • the plates 10 are pivoted by their respective motors 21 so that, in their working positions, they are oriented at predetermined angles so as to follow the profile of a shoe of a particular style or size.
  • the orientation of the plates is normally adjusted while the entire plate-support assembly is being moved forwards from its rest position to its working position but it can also be adjusted before the assembly is moved.
  • the forward movement is, of course, also programmed according to the position of the last 30.
  • Figures 3 and 4 show two possible working situations. Both the programmable control unit and the relative connection and control apparatuss of the motors are known to experts in automatic control systems and it is not therefore necessary to describe them.
  • the path and the final position of the plates may be perfectly and automatically adjusted to any style or size whatever of shoe to be assembled.
  • this adjustment may be carried out very rapidly simply by supplying the control unit with data relating to the shoe to be assembled so that the machine's versatility and productivity are greatly increased over those of prior art machines.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Sewing Machines And Sewing (AREA)
EP93201230A 1992-09-04 1993-04-29 Vorrichtung zum Falten einer Kante des Oberleders auf einer Leiste von einer Schuhherstellungsmaschine Withdrawn EP0585982A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922065 1992-09-04
ITMI922065A IT1256128B (it) 1992-09-04 1992-09-04 Dispositivo per piegare il bordo della tomaia su una forma in una macchina per la fabbricazione di calzature

Publications (1)

Publication Number Publication Date
EP0585982A1 true EP0585982A1 (de) 1994-03-09

Family

ID=11363913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93201230A Withdrawn EP0585982A1 (de) 1992-09-04 1993-04-29 Vorrichtung zum Falten einer Kante des Oberleders auf einer Leiste von einer Schuhherstellungsmaschine

Country Status (3)

Country Link
EP (1) EP0585982A1 (de)
BR (1) BR9301885A (de)
IT (1) IT1256128B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1491108A1 (de) * 2003-06-24 2004-12-29 OFFICINE MECCANICHE MOLINA & BIANCHI S.p.A. Vorrichtung zum Falten der Kante eines Schuhoberteils

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083384A (en) * 1961-11-10 1963-04-02 Kamborian Jacob S Wipers for end lasting machines
US3155994A (en) * 1959-12-08 1964-11-10 Kamborian Jacob S Wipers
DE3806087A1 (de) * 1988-02-26 1989-09-07 Hacoba Textilmaschinen Zwickmaschine fuer schuhschaefte
EP0338722A2 (de) * 1988-04-22 1989-10-25 British United Shoe Machinery Limited Schere für Schuhzwickmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155994A (en) * 1959-12-08 1964-11-10 Kamborian Jacob S Wipers
US3083384A (en) * 1961-11-10 1963-04-02 Kamborian Jacob S Wipers for end lasting machines
DE3806087A1 (de) * 1988-02-26 1989-09-07 Hacoba Textilmaschinen Zwickmaschine fuer schuhschaefte
EP0338722A2 (de) * 1988-04-22 1989-10-25 British United Shoe Machinery Limited Schere für Schuhzwickmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1491108A1 (de) * 2003-06-24 2004-12-29 OFFICINE MECCANICHE MOLINA & BIANCHI S.p.A. Vorrichtung zum Falten der Kante eines Schuhoberteils

Also Published As

Publication number Publication date
IT1256128B (it) 1995-11-29
ITMI922065A1 (it) 1994-03-04
BR9301885A (pt) 1994-03-22
ITMI922065A0 (it) 1992-09-04

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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