EP2413731A1 - Procédé de montage de la tige d'une chaussure et dispositif de montage correspondant - Google Patents

Procédé de montage de la tige d'une chaussure et dispositif de montage correspondant

Info

Publication number
EP2413731A1
EP2413731A1 EP10716869A EP10716869A EP2413731A1 EP 2413731 A1 EP2413731 A1 EP 2413731A1 EP 10716869 A EP10716869 A EP 10716869A EP 10716869 A EP10716869 A EP 10716869A EP 2413731 A1 EP2413731 A1 EP 2413731A1
Authority
EP
European Patent Office
Prior art keywords
shoe last
toe
roller
side portion
rollers
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Withdrawn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
EP10716869A
Other languages
German (de)
English (en)
Inventor
Calogero Di Bella
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.)
Cottino Francesco
Original Assignee
Cottino Francesco
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 Cottino Francesco filed Critical Cottino Francesco
Publication of EP2413731A1 publication Critical patent/EP2413731A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00—Lasting machines
    • A43D21/006—Lasting machines with rotating lasting means
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00—Lasting machines
    • A43D21/16—Lasting machines with lasting pincers and toe- or heel-embracing wipers
    • A43D21/166—Lasting machines with lasting pincers and toe- or heel-embracing wipers with toe-embracing wipers

Definitions

  • the present invention relates to a method for assembling an upper of a footwear, and relative lasting apparatus.
  • the present method is used for adapting the toe of the upper on the shoe last of a footwear, so that this perfectly copies the shape to be given to the footwear to be produced.
  • This method, and the relative apparatus for implementing the method can be used to produce footwear, with a toe of any shape, for example square, rounded or tapered, or other shape.
  • the toe of the upper is placed on the footwear last using specific apparatus equipped with at least one Teflon die (see Figs.
  • This Teflon die is specifically folded over the shoe last, starting from the toe cap thereof up to the two opposite side portions thereof, so as to adapt the toe of the upper, previously positioned on the outer surface of said Teflon die, on the shoe last. Subsequently, the toe is stitched to the midsole and/or to the sole, which is coupled to the shoe last.
  • the toe of the shoe, or footwear has dimensions, and at times shape, that vary when the size of the shoe varies, also for the same model.
  • Teflon dies of different sizes are required.
  • this has a significant influence on production costs and on the times required to produce prototypes or footwear having complex shoe last.
  • Teflon dies wear easily, and therefore a large number of spare Teflon dies are required for the same last, so that the lasting machine can maintain high quality standards and production efficiency.
  • the object of the present invention is to produce a method for adapting the toe of the upper to the shoe last, which is capable of solving the problems of prior art mentioned above.
  • the object of the present invention is to produce a method according to which different Teflon dies for each different shoe last or, in the case of the same shoe last, for different footwear sizes are not required.
  • the object of the present invention is to produce a lasting apparatus for implementing the method in a simple and effective manner, solving the prior art problems mentioned above.
  • the present method for assembling the upper of a footwear comprising the step of a) adapting at least one portion of the toe of the upper on a shoe last, from the toe cap of said shoe last to at least part of at least one side portion of said shoe last, characterized in that said step a) comprises the step of b) dragging rollingly over the outer surface of said at least one portion of the toe of said upper, at least one roller, preferably but not exclusively idle, pressing said outer surface of the upper, from the toe cap of said shoe last to at least part of said at least one side portion of said shoe last.
  • the method step b) is simultaneous to the step of c) retaining in position said at least one portion of the toe of the upper on said shoe last.
  • the method step c) comprises the step of d) unwinding at least one retaining band, made of Teflon or similar material, over said at least one portion of the toe of the upper, from the toe cap of said shoe last to at least part of at least one side portion of said shoe last.
  • the method step d) comprises the step of e) unwinding said at least one retaining band during the rolling of said at least one roller over said at least one portion of said toe of the upper.
  • this retaining band must be wound on said at least one roller before the method step b).
  • the present invention relates to an apparatus for implementing the aforesaid method of assembling the toe of the upper on the footwear last.
  • This apparatus comprises means for adapting said at least one portion of the toe of the upper on the shoe last, from the toe cap of said shoe last to at least part of at least one side portion of this shoe last.
  • said adapting means comprise at least one roller, preferably, but not exclusively, idle, moveable rollingly pressing on the outer surface of said at least one portion of the toe of the upper, from the toe cap of the shoe last to at least part of said at least one side portion of said shoe last.
  • said adapting means comprise a device for dragging, preferably continuously, said at least one idle roller over the outer surface of said at least one portion of the toe of the upper, from the toe cap of said shoe last to at least part of said at least one side portion of said shoe last.
  • This dragging device comprises means for exercising pressure on the outer surface of said at least one portion of the toe of the upper by at least one roller, preferably idle.
  • said at least one idle roller is connected integral with said means for exercising pressure, which are in turn integral with said dragging device.
  • the dragging device comprises a frame and at least one mechanical arm rotatably constrained relatively to said frame, and to which said means for exercising pressure and said at least one roller are integrally constrained.
  • the means for exercising pressure comprise at least one mechanism for linear displacement of said at least one roller, for example of the linear actuator type, so as to make said at least one roller roll towards or away from the shoe last.
  • said dragging device also comprises at least one actuator for rotating in a controlled way said at least one arm, and at least a second actuator for linear displacement of said frame. In this way it is possible to displace said at least one roller on a plane substantially parallel to the bottom portion of the shoe last, i.e. the portion on which the sole of the shoe is adapted.
  • the apparatus also comprises means for retaining in position said at least one portion of the toe of the upper on said shoe last, from the toe cap of said shoe last to at least part of at least one side portion of said shoe last.
  • These retaining means comprise at least one retaining band wound around said at least one roller and adapted for being unwound on said at least one portion of said toe of the upper during dragging of said at least one roller on said at least one portion of the toe of the upper. In this way, it is possible to apply a continuous pressure on the entire length of the upper which up to that point has been positioned by the roller on the shoe last.
  • Fig. 1 a is a perspective view of a part of the prior art lasting apparatus
  • Fig. 1 b is a schematic top view of the lasting apparatus of Fig. 1 a
  • Fig. 2a is a schematic top view of a lasting apparatus according to the invention, in which the shoe last has a pointed toe;
  • Fig. 2b is a schematic top view of a lasting apparatus according to the invention, in which the shoe last has a square toe;
  • Fig. 3 is a schematic top view of a lasting apparatus according to the invention, during unwinding of a retaining band;
  • Fig. 4 is a perspective view of the apparatus according to Figs. 2a and 2b. DETAILED DESCRIPTION OF SOME EMBODIMENTS OF THE PRESENT INVENTION
  • Figs. Ia and Ib show a generic prior art lasting apparatus 200 equipped with a Teflon die 201 which, during the process of adapting the toe 202 of the upper 203 on the shoe last 204, is folded over the toe cap 204a of the shoe last 204 in order to adapt the toe 202 of the upper 203 to the shoe last 204.
  • This folding operation (indicated by the arrows) of the Teflon die 201 is obtained through two actuators 205 that operate on opposite sides of the shoe last and each push part of the Teflon die against the relative side portion 204b of the shoe last 204.
  • FIGs. 2 to 4 show the lasting apparatus 1 according to the invention.
  • This apparatus 1 comprises means for adapting 16 a portion of the toe 11 a of the upper 11 on a shoe last 12, from the toe cap 12a of said shoe last 12 to the two side portions 12b of said shoe last 12.
  • Said adapting means 16 comprise two idle rollers 15, made of a material chosen from Teflon, Vulkollan, brass, aluminium, steel and nylon, each of which moves rollingly pressing the outer surface 11 b of the portion of the toe 11 a of the upper 1 1 , from the toe cap 12a of said shoe last 12 to the respective side portion 12b of said shoe last 12.
  • a lasting apparatus 1 equipped with two rollers is described here and hereinafter, a lasting apparatus 1 equipped with a single roller pressing first on one side of the last and then on the other, or equipped with a plurality of rollers arranged symmetrically relatively to the shoe last on the two sides thereof, also falls within the scope of protection of the present invention.
  • any non-idle mounting of the rollers 15 on the adapting means 16 also falls within the scope of protection requested here.
  • said adapting means 16 comprise a device 20 for continuously dragging the two idle rollers 15 over the outer surface 11 b of said at least one portion of the toe 11 a of the upper 11, from the toe cap 12a of said shoe last 12 to the two side portions 12b of said shoe last 12.
  • rollers are arranged symmetrically relatively to the longitudinal axis X of the shoe last 12. Moreover, the different positions of the rollers, as they advance along the two side portions 12b of the shoe last 12, are depicted with a broken line.
  • the two rollers 15 roll on the two opposite sides 12b of the shoe last, maintaining the upper 1 1 in tension.
  • the toe of the upper can be retained on the shoe last by means of specific support elements (not shown here) which exercise pressure from the point in which the roller starts its rotating motion.
  • the two rollers can operate alternately, i.e. when one roller rolls on the surface of the upper, the other roller is stopped and retains the upper in tension, and vice versa.
  • the dragging device 20 comprises means for exercising pressure 30 on the outer surface 1 I b of said toe 1 Ia of the upper 11 by said two idle rollers 15. As shown in Figs.
  • the idle rollers 15 are connected integrally to said means for exercising pressure 30.
  • the dragging device 20 comprises a frame 19 and two mechanical arms 21 rotatably constrained relatively to said frame 19 and able to make both the respective means for exercising pressure 30 and the respective rollers 15 move with them.
  • each means for exercising pressure 30 comprises at least one mechanism 31 for linear displacement of the respective roller 15, so that this roller 15 can be moved away from the starting position, placed in proximity of the toe cap 12a of the shoe last 12, and thus reach the required side portion 12b of the shoe last 12.
  • the dragging device 20 further comprises an actuator 40 for rotating in a controlled way the two arms 21.
  • the actuator shown in the embodiment described here is a fluid-operated double-acting piston cylinder, to facilitate rotation synchronism of the two arms 21.
  • the dragging device 20 comprises at least a second actuator 50, for example a further fluid-operated jack, for linear displacement of the frame 19. In this way the apparatus can be used both for shoes with square toes and for those with tapered toes.
  • the actuators 40 and 50 described here can be chosen from pneumatic, hydraulic or electromechanic actuators.
  • the apparatus 1 comprises means for retaining 61 in position said at least one portion of the toe 11 a of the upper 11 on said shoe last 12, from the toe cap 12a of said shoe last 12 to at least part of at least one side portion 12b of said shoe last 12.
  • These retaining means 61 comprise a retaining band 22 wound around the two rollers 15, before adapting the toe of the upper to the shoe last, and adapted for being unwound on said toe 11 a during dragging of the two rollers 15 on said toe 1 1 a. In this way it is possible to apply continuous pressure on the entire length of the upper 11 , pressure which up to that point was applied on the shoe last 12 by the two idle rollers 15.
  • the method for assembling the upper 11 of a footwear comprises the step of a) adapting the toe 11 a of the upper 11 on said shoe last 12, from the toe cap 12a of said shoe last 12 to the two side portions 12b of the shoe last 12.
  • Said method step a) comprises the step of b) dragging rollingly over the outer surface 1 1 b of said toe 1 Ia of the upper 11, two rollers, preferably idle, pressing the outer surface 11 b of said upper, from the toe cap 12a of said shoe last 12 to at least part of said at least one side portion 12b of said shoe last 12.
  • the step b) of the method is simultaneous to the step c) of retaining in position said portion of the toe 11 a of the upper 11 on said shoe last 12.
  • the method step c) comprises the step of d) unwinding a retaining band 22 over said at least one portion of the toe 11 a of the upper 11, from the toe cap 12a of said shoe last 12 to the two side portions 12b of said shoe last 12.
  • the step d) comprises the step of e) unwinding said at least one retaining band 22 during the rolling of the two rollers 15 over the toe 11 a of the upper 11.
  • this retaining band 22 is wound on the two rollers 15 before the method step b).
  • the method step b) is performed by two rollers 15, pressing the outer surface 11 b of the upper 11.
  • the first of the two rollers 15 is dragged rollingly over the outer surface l i b of at least one portion of the toe 1 1 a of the upper 1 1 , from the toe cap 12a of the shoe last 12 to a side portion 12b of the shoe last 12, while the second of the two rollers 15 is dragged rollingly over the outer surface 11 b of at least one portion of the toe 1 Ia of the upper 11, from the toe cap 12a of the shoe last 12 to a side portion 12b of the shoe last 12, which is however symmetrically opposite to the side portion 12b on which the first of the two rollers presses.
  • the upper 11 is adapted in tension on both opposite side portions 12b of the shoe last 12 of the footwear, so as to exactly copy the shoe last 12 of the footwear to be produced.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Procédé de montage d'une tige (11) d'une chaussure, comprenant les étapes consistant à a) adapter au moins une partie de l'orteil (11a) de la tige (11) sur une forme à chaussure (12), entre le bout de la tige (12a) de ladite forme à chaussure (12) et au moins une partie d'une ou de plusieurs parties latérales (12b) de ladite forme à chaussure (12). L'invention est caractérisée en ce que l'étape a) comprend les étapes consistant à b) tirer au moins un rouleau (15), en le roulant sur la surface externe (11b) d'au moins une partie de l'orteil (11a) de la tige (11), en pressant la surface externe (11b) de la tige, entre le bout de la tige (12a) de la forme à chaussure (12) et au moins une partie d'une ou de plusieurs parties latérales (12b) de la forme à chaussure (12).
EP10716869A 2009-04-01 2010-03-15 Procédé de montage de la tige d'une chaussure et dispositif de montage correspondant Withdrawn EP2413731A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000520A ITMI20090520A1 (it) 2009-04-01 2009-04-01 "metodo per il montaggio della tomaia di una calzatura e relativo apparato monta premonta"
PCT/IB2010/000542 WO2010112994A1 (fr) 2009-04-01 2010-03-15 Procédé de montage de la tige d'une chaussure et dispositif de montage correspondant

Publications (1)

Publication Number Publication Date
EP2413731A1 true EP2413731A1 (fr) 2012-02-08

Family

ID=41410625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10716869A Withdrawn EP2413731A1 (fr) 2009-04-01 2010-03-15 Procédé de montage de la tige d'une chaussure et dispositif de montage correspondant

Country Status (3)

Country Link
EP (1) EP2413731A1 (fr)
IT (1) ITMI20090520A1 (fr)
WO (1) WO2010112994A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR517371A (fr) * 1919-05-31 1921-05-04 United Shoe Machinery Ab Procédé et machine de cordonnerie
US2326193A (en) * 1941-07-23 1943-08-10 United Shoe Machinery Corp Machine for shaping shoe uppers over lasts
GB617695A (en) * 1945-10-19 1949-02-10 British United Shoe Machinery Improvements in or relating to lasting machines
JPH02234704A (ja) * 1989-03-09 1990-09-17 Miyamoto Hamono Kogu Seisakusho:Kk スリッパ甲部材の自動吊込装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010112994A1 *

Also Published As

Publication number Publication date
ITMI20090520A1 (it) 2010-10-02
WO2010112994A1 (fr) 2010-10-07

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