EP1466711A1 - Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé - Google Patents

Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé Download PDF

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Publication number
EP1466711A1
EP1466711A1 EP03380091A EP03380091A EP1466711A1 EP 1466711 A1 EP1466711 A1 EP 1466711A1 EP 03380091 A EP03380091 A EP 03380091A EP 03380091 A EP03380091 A EP 03380091A EP 1466711 A1 EP1466711 A1 EP 1466711A1
Authority
EP
European Patent Office
Prior art keywords
last
fastening means
movable fastening
surpluses
center
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Withdrawn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
EP03380091A
Other languages
German (de)
English (en)
Inventor
Antoni Vidal Pons
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.)
Carpe Investigaciones Cientificas Slu
Original Assignee
Carpe Investigaciones Cientificas Slu
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 Carpe Investigaciones Cientificas Slu filed Critical Carpe Investigaciones Cientificas Slu
Priority to EP03380091A priority Critical patent/EP1466711A1/fr
Priority to CA002463411A priority patent/CA2463411A1/fr
Priority to BR0401043-4A priority patent/BRPI0401043A/pt
Priority to US10/822,031 priority patent/US20040200014A1/en
Priority to JP2004117050A priority patent/JP2004351199A/ja
Publication of EP1466711A1 publication Critical patent/EP1466711A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/20—Manufacture or reconditioning of specific semi-finished or finished articles of lasts; of shoes, e.g. sabots; of parts of shoes, e.g. heels
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D3/00—Lasts
    • A43D3/02—Lasts for making or repairing shoes

Definitions

  • the present invention refers to a machining method of a last for making shoes and to a machining centre by numerical control to carry out this method.
  • moulds known as lasts are used, that imitate the form of the foot and are placed inside the shoe during its conformation process.
  • the form of the last will depend on the shoe type or model, or on the different sizes. For this reason, the quantity of lasts that should be made can become considerable, especially in launching campaigns of new ranges of products.
  • the production process of the lasts begins with the design of them with computer assisted design tools and then programming a numerical control machine.
  • This machine takes charge to begin the machining of a piece, usually of polyethylene, by means of the rough-hewn of its surface.
  • the rough-hewn consists on fixing the piece by two points, making it rotate about the axis defined by these two fixing points, and, by means of rough-hewn blades, machining the surface of the piece to give it the desired form to the last.
  • the finishing machine fastens the lasts by the same points, heel-pad and toe, respecting the reference points marked initially by the first rough-hewn machine.
  • the last is identified labeling by hand the foot size number (left and right) marked with a marker and the reference of the model.
  • Machines exist for the manufacturing of physical prototypes of lasts that, although they eliminate the surpluses of the toe and the heel-pad, they cannot be used in production processes, due to their high maneuver times.
  • the object of the present invention is to provide a method that substantially simplifies and speeds up the finishing process in the last production.
  • a first aspect of the invention proposes a machining method of a last for the production of shoes, which comprises these operations: rough-hewn, piercing, identification marking, and removal of the resulting surpluses of the rogh-hewn operation, which it is characterized in that it comprises the following steps:
  • the finishing process in the production of the last is carried out practically in its entirety in an automated way.
  • the method comprises the removal of the surpluses, the piercing of the last, and its marking. Therefore, they are carried out three operations in the same method and in the same machine.
  • the piercing operation of the last comprises the machining of a plurality of holes in the sole of the last, a hole in the shoulder of the instep, and other two holes of different diameter in its upside.
  • the three holes of the sole will allow the later placement of the insole, and the two holes of the upside will serve to hold the last and to introduce a fastening spike of a part of the last that will be cut.
  • the positioning operation of the last for its piercing and its identification marking is carried out rotating the last by means of the first movable fastening means.
  • the removal process of the surpluses is carried out fixing the last by the two holes of different diameter practiced in its upside to the second movable fastening means.
  • the positioning of the last in the removal step of the surpluses is carried out rotating it by means of the second movable fastening means.
  • the drill can access easily to the two surpluses.
  • the first movable fastening means fix the last in an horizontal position and the second movable fastening means fix the last in a vertical position.
  • the turn of the last by the first movable fastening means and by the second movable fastening means is carried out about an horizontal axis.
  • the invention provides a mechanization center by numerical control for the piercing, identification marking, and removal of the resulting surpluses of a previous rough-hewn process, of a last for the production of shoes, which is characterized in that it comprises a plurality of drills, first movable fastening means for its fitting in housings present in the surpluses located in the heel-pad and in the toe of the last, and second movable fastening means for its introduction inside holes made in the last by a drill.
  • the first movable fastening means comprise a first support for its fitting in the housing of the surplus of the heel-pad of the last, and a second support for its housing for its fitting in the housing of the surplus of the toe of the last, being both variable supports in angle and being able the first support (11b) to rotate about its own axis.
  • the second support (11a) can rotate about its own axis.
  • the second support is fixed to height and depth regulation means for the correct fastening of different sizes and types of the lasts.
  • the last can be suitably positioned independently of its form or size before being machined.
  • the height regulation means comprise an endless screw which can be driven by means of a rotating handle
  • the depth regulation means comprise a pneumatic piston which can be driven by means of a manual control.
  • the supports includes a couple of complementary protrusions to the housings of the surpluses of the last.
  • the second movable fastening means comprise an arm, with ability of rotate about an axis that includes two cylinders of different diameter, including the cylinder of greater diameter pressure means against the walls of the hole of the last in which is housed.
  • the pressure means comprise a hollow shaft whose external walls present a section change that houses inside it a piston of a pneumatic cylinder, being connected this piston at its end to a head provided with a skirt that includes flexible wings, so that when the piston goes back it forces the head to move on the external walls of the axis, so when it arrives to the section change the fins expand against the walls of the hole of the last.
  • the last is compactly fixed during the removal of the surpluses, allowing the maximum operation precision.
  • the drills are interchangeable.
  • the last 1 As it leaves of the rough-hewn process.
  • the surface of the last 1 is machined making rotate a piece of polyethylene about an axis defined by two supports. These supports hold the last housed in a pair of housings 2, 3 located in the toe and in the heel-pad, respectively. Therefore, in the area in which there are these housings left surpluses 4, 5 not machined which must be eliminated.
  • Figure 2 shows how the last 1 will be after passing by the method of the present invention.
  • the last 1 already presents its definitive shape, the surpluses 4, 5 have been eliminated, there are made a couple of holes 6a, 6b in the upper area, a hole 6c which crosses horizontally the instep, and other three holes 6d in the area of the sole. On the other hand, it is also recorded the number of size 7 of the last 1 and other data on it.
  • the hole 6b made in the upside of the last 1 has the function to house a spike that will hold a part of the instep 8 that will be cut, in a later phase, to facilitate the extraction of the footwear.
  • the hole 6a will serve like fastening means of the last 1 in later production phases, and also, as will be described later on, it will serve to hold the last 1 in the process of the invention.
  • the hole 6c is designed to facilitate the extraction of the instep 8 when the last is housed in the footwear.
  • the holes 6d of the sole of the last 1 will be used later on to insert some metallic head screws without exit that will allow the introduction of a head that will pierce a plastic insole that will fix it quickly and precisely to the sole of the last 1. This way, it is obtained a new improvement in the whole chained process of production of the footwear.
  • the last is placed in a machining center 10 as it is shown.
  • the center 10 is provided with first fastening means that consist on supports 11a, 11b that hold the last 1 by the housings 2, 3 present in the surpluses 4, 5 present in the toe and in the heel-pad, respectively.
  • these housings 2, 3 had already been used in a previous rough-hewn process, so that it is not necessary to machine them expressly for this process.
  • FIG 4 it can be seen a detail of the supports 11a, 11b, which present protrusions 12 that will be housed in the respective housings 2, 3. This way, the fastening of the last 1 is carried out of consistent form and it permits the rotation without problems.
  • the support 11a presents a single cylindrical protrusion 12 that will be housed in a complementary housing 2 present in the surplus 4 of the toe of the last 1, so that the turn of it takes place without necessity of rotation of the support 11a too.
  • the protrusion 12 of this embodiment is cylindrical, its shape could also be conical or similar, so it allows the rotation of the last without any difficulty.
  • the placement of the last 1 in the machining center 10 is carried out by an operator that will regulate the position of the supports 11a, 11b according to the measure and characteristics of the last 1, in order to position it correctly.
  • these supports 11a, 11b have means which permits the vary their position. Both supports 11a, 11b can vary in angle, and can rotate about their own axis.
  • the support 11a also, is fixed to means that allow the height and in-depth regulation of it.
  • These means consist on a pneumatic piston 13 that will regulate the depth, and on a endless screw 14 that by means of its turn, moves in height the support 11a.
  • the piston 13 and the endless screw 14 are commanded respectively by an operator by means of a joystick and a rotatable handle (not shown).
  • the machining process begins.
  • a drill 15 takes charge to machine the last, making the holes shown in figure 2.
  • the center 10 carries out the necessary movements: the support 11b which is associated to the fourth axis of the machining center 10 makes rotate the last 1 thanks to the action of a motor 9, a movable bank 16 makes the horizontal displacement of it which holds all the fastening devices of the last 1, and the drill 15 makes the vertical movement.
  • the drill 15 can access to the whole surface of the last 1 and make the holes without difficulty.
  • the center 10 has additional drills 17 of different size and characteristics, using the most convenient in each case.
  • an operator removes the last of the supports 11a, 11b to fix it in second fastening means located in an arm 18 with can turn about an horizontal axis which is, as the first support 11b of the first fastening means, associated to the fourth axis of the center 10, as figure 6 shows.
  • These second fastening means are constituted by a couple of cylinders 19, 20 of different size. The fastening is carried out introducing these cylinders 19, 20 in the holes 6b, 6a made in the previous phase, so that the last 1 is in a vertical position.
  • the cylinder 20 is provided with pressure means against the internal walls of the hole 6a of the last 1, once it has been introduced in it.
  • the cylinders 19 and 20 are introduced respectively in the holes 6b and 6a.
  • the cylinder 20 is formed by a hollow shaft 21 whose external walls present a widening 22.
  • This axis 21 house in its interior a piston 23 associated to a pneumatic cylinder 24, and coupled at its end to a head 25 provided with a skirt formed by flexible wings 26.
  • the pneumatic cylinder 24 is driven, displacing the piston 23 that in turn drags the head 25.
  • the wings 26 expand and they press against the internal walls of the hole 6a of the last 1.
  • the removal of the surpluses 4, 5 is carried out similarly to the first phase, by means of the combined action of the arm 18 driven by the motor 9 (rotation movement), the movable bank 16 (horizontal movement) and the drill 15 (vertical movement).
  • the method and the machining center of the invention present some advantages in front of the current production systems of lasts, among the most significant, it is necessary to highlight:
  • the time difference between methods both it is of more than eight minutes for each couple of lasts. So, it can be deduced that in industrial production the productivity increase with the method of the invention it is very significant.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP03380091A 2003-04-10 2003-04-10 Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé Withdrawn EP1466711A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03380091A EP1466711A1 (fr) 2003-04-10 2003-04-10 Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé
CA002463411A CA2463411A1 (fr) 2003-04-10 2004-04-06 Methode d'usinage pour la fabrication de chaussures sur mesure et centre d'usinage a commande numerique pour l'exploitation de cette methode
BR0401043-4A BRPI0401043A (pt) 2003-04-10 2004-04-08 Processo de usinagem de uma fÈrma de sapateiro para fabricar sapatos e centro de usinagem por controle numérico para executar este processo
US10/822,031 US20040200014A1 (en) 2003-04-10 2004-04-09 Machining method of a last for making shoes and machining centre by numerical control to carry out this method
JP2004117050A JP2004351199A (ja) 2003-04-10 2004-04-12 靴製造のための足型の加工方法及び当該方法を実施するための数値制御によるマシニングセンタ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03380091A EP1466711A1 (fr) 2003-04-10 2003-04-10 Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé

Publications (1)

Publication Number Publication Date
EP1466711A1 true EP1466711A1 (fr) 2004-10-13

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EP03380091A Withdrawn EP1466711A1 (fr) 2003-04-10 2003-04-10 Procédé d'usinage d'une forme pour la fabrication de chaussures et centre d'usinage à commande numérique pour mettre en oeuvre ce procédé

Country Status (5)

Country Link
US (1) US20040200014A1 (fr)
EP (1) EP1466711A1 (fr)
JP (1) JP2004351199A (fr)
BR (1) BRPI0401043A (fr)
CA (1) CA2463411A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009116104A1 (fr) * 2008-03-21 2009-09-24 Newlast S.R.L. Società Unipersonale Machine de fabrication d'ébauches pour l'industrie de la cordonnerie
WO2015102515A1 (fr) * 2013-12-31 2015-07-09 Андрей Александрович СЕВАСТЬЯНОВ Procédé d'usinage d'une ébauche asymétrique à partir d'une installation, machine-outil et dispositif de fixation d'ébauche

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2516781C1 (ru) * 2012-11-12 2014-05-20 Владимир Владимирович Опарин Способ обработки изделий из древесины поперек волокон в двух и более плоскостях различных форм поперечных сечений
US9839253B2 (en) * 2014-12-10 2017-12-12 Nike, Inc. Last system for braiding footwear
US10280538B2 (en) 2015-05-26 2019-05-07 Nike, Inc. Braiding machine and method of forming an article incorporating a moving object
US10060057B2 (en) 2015-05-26 2018-08-28 Nike, Inc. Braiding machine with non-circular geometry
US10238176B2 (en) 2015-05-26 2019-03-26 Nike, Inc. Braiding machine and method of forming a braided article using such braiding machine
US9920462B2 (en) 2015-08-07 2018-03-20 Nike, Inc. Braiding machine with multiple rings of spools
CN107822267A (zh) * 2017-11-27 2018-03-23 黑天鹅智能科技（福建）有限公司 立体鞋体的加工熔断设备及其热切和平烫加工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335062A (en) * 1916-07-17 1920-03-30 Krippendorf Kalculator Company Manufacture of lasts
GB272239A (en) * 1926-06-05 1927-10-13 Paul Amann Improvements in apparatus for clamping and holding shoe lasts and patterns
DE494893C (de) * 1927-11-05 1930-03-28 Georg Seidl Vorrichtung zum Abfraesen der Enden von auf der Drehbank hergestellten Kopien unregelmaessiger Gegenstaende
EP0267606A1 (fr) * 1986-11-12 1988-05-18 SPRECA - ZENGARINI & C. S.N.C. Procédé et appareils pour fabriquer et utiliser des formes de chaussure extensibles pour tendre la chaussure et formes fabriqueés par le procédé et les appareils
WO1995017110A1 (fr) * 1993-12-23 1995-06-29 Palser Officina Meccanica S.N.C. Machine automatique de fabrication de formes articulees pour la fabrication de chaussures, a partir de pieces moulees grossierement mises en forme
EP1044622A1 (fr) * 1999-04-14 2000-10-18 Palser Officina Meccanica s.n.c. di Palmeri Salvatore e Serra Maria Paola Machine automatique pour finir des formes pour la fabrication de chaussures à partir de pièces moulées grossièrement mises en forme

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1335062A (en) * 1916-07-17 1920-03-30 Krippendorf Kalculator Company Manufacture of lasts
GB272239A (en) * 1926-06-05 1927-10-13 Paul Amann Improvements in apparatus for clamping and holding shoe lasts and patterns
DE494893C (de) * 1927-11-05 1930-03-28 Georg Seidl Vorrichtung zum Abfraesen der Enden von auf der Drehbank hergestellten Kopien unregelmaessiger Gegenstaende
EP0267606A1 (fr) * 1986-11-12 1988-05-18 SPRECA - ZENGARINI & C. S.N.C. Procédé et appareils pour fabriquer et utiliser des formes de chaussure extensibles pour tendre la chaussure et formes fabriqueés par le procédé et les appareils
WO1995017110A1 (fr) * 1993-12-23 1995-06-29 Palser Officina Meccanica S.N.C. Machine automatique de fabrication de formes articulees pour la fabrication de chaussures, a partir de pieces moulees grossierement mises en forme
EP1044622A1 (fr) * 1999-04-14 2000-10-18 Palser Officina Meccanica s.n.c. di Palmeri Salvatore e Serra Maria Paola Machine automatique pour finir des formes pour la fabrication de chaussures à partir de pièces moulées grossièrement mises en forme

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009116104A1 (fr) * 2008-03-21 2009-09-24 Newlast S.R.L. Società Unipersonale Machine de fabrication d'ébauches pour l'industrie de la cordonnerie
CN101977527A (zh) * 2008-03-21 2011-02-16 纽拉斯特私人有限责任公司 生产用于制鞋业的鞋坯的机器
WO2015102515A1 (fr) * 2013-12-31 2015-07-09 Андрей Александрович СЕВАСТЬЯНОВ Procédé d'usinage d'une ébauche asymétrique à partir d'une installation, machine-outil et dispositif de fixation d'ébauche
RU2600685C1 (ru) * 2013-12-31 2016-10-27 Андрей Александрович Севастьянов Способ механической обработки асимметричной заготовки с одной установки, станок и устройство для закрепления заготовки

Also Published As

Publication number Publication date
US20040200014A1 (en) 2004-10-14
BRPI0401043A (pt) 2005-01-11
CA2463411A1 (fr) 2004-10-10
JP2004351199A (ja) 2004-12-16

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