CA2094644A1 - Method and apparatus for injection moulding rubber soles having at least two layers - Google Patents

Method and apparatus for injection moulding rubber soles having at least two layers

Info

Publication number
CA2094644A1
CA2094644A1 CA002094644A CA2094644A CA2094644A1 CA 2094644 A1 CA2094644 A1 CA 2094644A1 CA 002094644 A CA002094644 A CA 002094644A CA 2094644 A CA2094644 A CA 2094644A CA 2094644 A1 CA2094644 A1 CA 2094644A1
Authority
CA
Canada
Prior art keywords
sole layer
mould cavity
rubber
rubber mixture
layers
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.)
Granted
Application number
CA002094644A
Other languages
French (fr)
Other versions
CA2094644C (en
Inventor
Hubert Drewinski
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.)
Kloeckner Desma Schuhmaschinen GmbH
Original Assignee
Kloeckner Ferromatik Desma GmbH
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 Kloeckner Ferromatik Desma GmbH filed Critical Kloeckner Ferromatik Desma GmbH
Publication of CA2094644A1 publication Critical patent/CA2094644A1/en
Application granted granted Critical
Publication of CA2094644C publication Critical patent/CA2094644C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
    • B29D35/081—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by injection moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
    • B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
    • B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
    • B29D35/081—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by injection moulding
    • B29D35/082—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by injection moulding injecting first the outer sole part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
    • B29D35/085—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by compression moulding, vulcanising or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts
    • B29D35/085—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by compression moulding, vulcanising or the like
    • B29D35/087—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts by compression moulding, vulcanising or the like forming first the outer sole part

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Process for injection moulding rubber or rubber-mixture soles having at least two layers and connecting them to one another and if required to a shoe upper. First the rubber mixture for the bottom sole layer is injected into an enlarged mould cavity and the latter is made smaller to match the volume of the bottom sole layer; once the rubber mixture has partially solidified the upper delimitation means for the bottom sole layer is removed and is replaced by a last. The rubber mixture for the inner sole layer is infected into the thus created mould cavity. By displacing the bottom sole layer upwards, the mould cavity is made smaller to match the size of the inner sole layer; after partial solidification of the rubber mixture the lower delimitation means of the inner sole layer is lowered by a certain distance and the inner sole is allowed to expand in controlled manner with the mould cavity enlarged. The apparatus according to the invention (Fig. 6) provides an intermediate piece (1) which is arranged between lateral mould parts (16a) and the bottom die (2) and can traverse both horizontally and vertically.
CA002094644A 1992-04-30 1993-04-22 Method and apparatus for injection moulding rubber soles having at least two layers Expired - Fee Related CA2094644C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4214254.7 1992-04-30
DE4214254A DE4214254C2 (en) 1992-04-30 1992-04-30 Method and device for injection molding two-layer rubber soles

Publications (2)

Publication Number Publication Date
CA2094644A1 true CA2094644A1 (en) 1993-10-31
CA2094644C CA2094644C (en) 2002-06-11

Family

ID=6457843

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002094644A Expired - Fee Related CA2094644C (en) 1992-04-30 1993-04-22 Method and apparatus for injection moulding rubber soles having at least two layers

Country Status (4)

Country Link
EP (1) EP0575692B1 (en)
CA (1) CA2094644C (en)
DE (1) DE4214254C2 (en)
ES (1) ES2087583T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT2407U1 (en) * 1997-07-23 1998-10-27 Gerhard Pliessnig ORTHOPEDICAL SUPPORT, IN PARTICULAR ORTHOPEDICAL SHOE INSOLE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1629399A1 (en) * 1966-03-04 1971-02-04 Funck Kg Dr Ing Method and tool for the production of molded foam bodies with reinforced outer skin
CA926571A (en) * 1969-10-03 1973-05-22 H. Drag Edward Method and apparatus for molding rubber
DE2241493C3 (en) * 1972-08-23 1975-06-26 Desma-Werke Gmbh, 2807 Uesen Method and device for the production of multi-layer soles from materials of low viscosity, in particular polyurethane or rubber
GB1420948A (en) * 1972-10-26 1976-01-14 Ici Ltd Injection moulding process
DE2650398A1 (en) * 1976-11-03 1978-09-21 Desma Werke Gmbh METHOD AND DEVICE FOR CASTING OR INJECTION MOLDING IN PARTICULAR TWO-PIECE OR MULTI-PIECE SHOE SOLES
GB2076725A (en) * 1980-05-23 1981-12-09 Liu Chin Lien Method of making laminated sole
GB2105252A (en) * 1981-08-27 1983-03-23 Geminder Rodney Ian Peter Production of footwear with a two-coloured moulded sole
DE4022778A1 (en) * 1990-07-18 1992-01-23 Kloeckner Ferromatik Desma Rubber sole injection moulding - uses distributor between moulds at temp. preventing premature vulcanisation

Also Published As

Publication number Publication date
DE4214254A1 (en) 1993-11-04
EP0575692B1 (en) 1996-04-03
EP0575692A1 (en) 1993-12-29
ES2087583T3 (en) 1996-07-16
DE4214254C2 (en) 1995-04-06
CA2094644C (en) 2002-06-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed