EP1050227A1 - Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich - Google Patents

Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich Download PDF

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Publication number
EP1050227A1
EP1050227A1 EP99120092A EP99120092A EP1050227A1 EP 1050227 A1 EP1050227 A1 EP 1050227A1 EP 99120092 A EP99120092 A EP 99120092A EP 99120092 A EP99120092 A EP 99120092A EP 1050227 A1 EP1050227 A1 EP 1050227A1
Authority
EP
European Patent Office
Prior art keywords
thread
needle
pliers
pins
machine
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Withdrawn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
EP99120092A
Other languages
English (en)
French (fr)
Inventor
Giuseppe Montani
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.)
MCM Srl
Original Assignee
MCM 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 MCM Srl filed Critical MCM Srl
Priority to EP99120092A priority Critical patent/EP1050227A1/de
Publication of EP1050227A1 publication Critical patent/EP1050227A1/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Withdrawn legal-status Critical Current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
    • A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
    • A43D11/08—Machines for temporary lacing of shoe parts or for cutting-away the lacing strips after lasting
    • A43D11/085—Lacing machines

Definitions

  • Footwear production includes lasting a shoe upper in order to perform on various working steps, such as rubbing, glue application, stretching, application of a relative sole, and so on.
  • the instep is closed by removably fastening to each other the opposite edges of the fore-upper part of the shoe upper.
  • these edges are fastened to each other by a thread (e.g. of cotton) which passes through the holes made in these edges and whose ends are knotted.
  • a thread e.g. of cotton
  • a machine for carrying out the above mentioned operations uses cam systems that operate lever mechanisms. This complicate configuration requires frequent maintenance operations, since inaccuracies occurring to the machine, due to wearing and clearances, are amplified by the lever mechanisms.
  • the above mentioned machine includes a thread carrying needle, which moves horizontally, between an advanced position and a retracted position.
  • the holes are matched in pairs, in coaxial arrangement, by drawing the edges close to each other, and are joined together by cylindrical elements with the above mentioned part of the thread attached thereto.
  • the needle returns to vertical position and raises these cylindrical elements, so as to allow the formation of loops in the region of the cylindrical elements and on the side of the needle.
  • Second pliers situated beside the first ones, grip the needle thread, which is subsequently cut off.
  • the operator in time relation with the needle return to the retracted position, disengages the holes of the above mentioned edges from the unit, pulls the thread and sets it on the knot tying group.
  • the thread stretching depends on the operator's ability and also on the position of this knot tying group with respect to the above mentioned unit.
  • This invention was evolved with the general object or providing a machine for fastening to each other the facing edges of the instep part of the upper, so as to close the instep, this machine including a station for firmly fastening the part of thread being used without tying knots and with a predetermined adjustable stretching of this thread.
  • Another object of the present invention is to provide a machine, in which the above mentioned station does not require operator's intervention.
  • a further object of the present invention is to provide a machine which not only does fulfill the above mentioned objects, but has also higher throughput than the machine described in the prior art.
  • Yet another object of the present invention is to provide a machine obtained by a combination of devices, means and operative mechanisms preferably driven by electric and/or pneumatic actuators, with reduction of inaccuracies and maintenance operations frequency.
  • reference numeral 1 generally designates a horizontally oriented needle, that carries a thread 2.
  • the needle 1 is supported by a slide 3 operated by a relative first actuator 70.
  • the needle 1 moves between two characteristic extreme positions, namely an advanced position A and a retracted position R, respectively.
  • the needle 1 passes through a unit 10, where a part 15 of the thread is hooked and handled, a station 30, where the ends 15a,15b of this part 15 of the thread are fastened in a way explained later, and through a centring member 16.
  • the centring member 16 has a through hole 16a, which the needle enters freely when it reaches the advanced position A.
  • the pliers 17, 18 are driven into oscillation by relative actuators, second and third, respectively, both actuators not being shown.
  • the unit 10 includes:
  • the pins 31 can be rotated each one around its related axis by rotation driving means (which are not shown) operated by the same fourth actuator 72.
  • the station 30 includes a feeder 35 supplying tubular cylindrical elements 36.
  • the feeder 35 is inclined and opened in its front part.
  • the station 30 has also buckling or pressing means including a punch 40 operated vertically by a relative eighth actuator, not shown.
  • the base 37 of the feeder 35 which holds the lowermost tubular cylindrical element 36a of the pile 36, is set in such a way that this lowermost element 36a is coaxial with the needle 1 axis.
  • the base 37 has a recess 37a having a shape that matches up the shape of the head 40a of the punch 40.
  • the needle 1 is located in the retracted position R and the carrier member 11 takes the vertical position V.
  • the needle 1 moves to the advanced position A, passing through the lowermost tubular element 36a, until the needle tip enters the hole 16a of the centring member 16.
  • the needle moves hack to the retracted position R (see Figure 4).
  • the needle makes the portion 15 of the thread, i.e. the portion between the pliers 17 and the needle 1 itself, pass through the tubular element 36a and locates the same portion 15 in initial part of the hook 31a of each pin 31 (see Figure 5).
  • the tightening means are then lowered so that the terminal parts 19a engage the adjacent sections T of the thread portion 15 located among the pins 31.
  • the carrier member 11 is rotated so that it moves from the vertical position V to the inclined position I (see Figure 7).
  • the pins 31 are rotated ninety degs around their axes and all in the same direction. Rotation is imparted to the pins by the already mentioned rotation driving means, which are not shown and which are controlled by the same fourth actuator 72 which makes the carrier member oscillate.
  • the portion 15 of the thread 2 forms a loop 80 for each indentation 31b.
  • the loops 80 lie in a plane perpendicular to the direction W.
  • the needle 1 is moved again to the advanced position A, thus passing through the loops 80, through the hole of the tubular element 36a, until the tip of the needle enters the hole 16a of the centring member 16.
  • the punch 40 is lowered.
  • the punch head 40a and the recess 37a co-operate to buckle the tubular element 36a.
  • the tubular elements 36 include each two consecutive sections H and K.
  • the second section K has a diameter larger than the one of the first section H, so as to create a funnel shape for facilitating the entrance therein of the needle.
  • the element 36 can have any shape and any cross-section.
  • the buckling can be made in any part of the element 36 and can extend along the entire length thereof. Deformation of the element, which exerts a firm lock action on the thread ends, can be performed with the metal cold or warmed, and by any means other than the punch.
  • a multi-component thread locking device can be used, that includes more components which are press fit into each other to firmly lock the thread ends 15a, 15b.
  • the thread locking device includes components joined to each other by deformation to lock the thread therebetween.
  • the proposed machine is capable of carrying out the closure of the instep portion of the shoe upper by using any type of thread, also synthetic (e.g. nylon).
  • the ends of the thread are locked by a thread locking device, that can be of any type and that is located in the handling station 30.
  • the locking action is achieved without the need of operation stops and with a constant tightness, that can be adjusted.
  • the basic technical feature of the present invention is the configuration of the handling station located between the operative unit 10 and the pliers 17 and 18.
  • Another advantageous aspect of the invention is the production of a machine which does not include cam means and which is moved by a series of actuators (electrical, pneumatic and so on), that are independent from each other, although they are operated in reciprocal phase relation.

Landscapes

  • Sewing Machines And Sewing (AREA)
EP99120092A 1999-05-04 1999-10-20 Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich Withdrawn EP1050227A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99120092A EP1050227A1 (de) 1999-05-04 1999-10-20 Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99108539 1999-05-04
EP99108539 1999-05-04
EP99120092A EP1050227A1 (de) 1999-05-04 1999-10-20 Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich

Publications (1)

Publication Number Publication Date
EP1050227A1 true EP1050227A1 (de) 2000-11-08

Family

ID=26152987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120092A Withdrawn EP1050227A1 (de) 1999-05-04 1999-10-20 Vorrichtung zum Verschnüren der Oberlederteilen von Schuhen im Ristbereich

Country Status (1)

Country Link
EP (1) EP1050227A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE201501C (de) *
DE352421C (de) * 1921-07-15 1922-04-27 Ver Schuhmaschinen Ges G M B H Maschine zum Verschnueren der Oberlederteile von Schnuerstiefeln
EP0124494A2 (de) * 1983-05-02 1984-11-07 OFFICINA MECCANICA BERTOLAJA DI BERTOLAJA COSTANTINO & C. S.a.s. Maschine zum halbautomatischen Montieren von Schuhen mit Sohlen mit aufstehenden Rändern

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE201501C (de) *
DE352421C (de) * 1921-07-15 1922-04-27 Ver Schuhmaschinen Ges G M B H Maschine zum Verschnueren der Oberlederteile von Schnuerstiefeln
EP0124494A2 (de) * 1983-05-02 1984-11-07 OFFICINA MECCANICA BERTOLAJA DI BERTOLAJA COSTANTINO & C. S.a.s. Maschine zum halbautomatischen Montieren von Schuhen mit Sohlen mit aufstehenden Rändern

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