GB1261916A - Method and apparatus for forming articles e.g. pneumatic tyres - Google Patents

Method and apparatus for forming articles e.g. pneumatic tyres

Info

Publication number
GB1261916A
GB1261916A GB1516568A GB1516568A GB1261916A GB 1261916 A GB1261916 A GB 1261916A GB 1516568 A GB1516568 A GB 1516568A GB 1516568 A GB1516568 A GB 1516568A GB 1261916 A GB1261916 A GB 1261916A
Authority
GB
United Kingdom
Prior art keywords
tyre
pillar
fluid
diaphragm
supplied
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.)
Expired
Application number
GB1516568A
Inventor
Edward George Bullivant
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.)
Dunlop Holdings Ltd
Original Assignee
Dunlop Holdings Ltd
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 Dunlop Holdings Ltd filed Critical Dunlop Holdings Ltd
Priority to GB1516568A priority Critical patent/GB1261916A/en
Priority to IE36369A priority patent/IE33449B1/en
Priority to FR6909431A priority patent/FR2005116A1/fr
Priority to DE19691916163 priority patent/DE1916163A1/en
Publication of GB1261916A publication Critical patent/GB1261916A/en
Expired 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
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/102—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry
    • B29C43/104—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using rigid mould parts specially adapted for moulding articles having an axis of symmetry the mould cavity lying totally outside the axis of symmetry, e.g. toroidal moulds
    • 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
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • 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
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/36—Expansion of tyres in a flat form, i.e. expansion to a toroidal shape independently of their building-up process, e.g. of tyres built by the flat-tyres method or by jointly covering two bead-rings
    • 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
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
    • B29D30/62—Applying bands of rubber treads, i.e. applying camel backs by extrusion or injection of the tread on carcass
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Tyre Moulding (AREA)

Abstract

1,261,916. Moulding plastic material. DUNLOP HOLDINGS Ltd. 26 March, 1969 [29 March, 1968], No. 15165/68. Heading B5A. In a method of forming an article on a sup - porting member provided with a flexible boundary wall, the wall is shaped to the desired configuration and made firm, whilst the article is formed, by the juxtaposition of a material which is rendered solid, and in order to separate the formed article from the member the material is rendered fluid. The material may comprise a low melting point metal or metal alloy, a thermoplastic resin or a wax. Alternatively it may be a fluid and solid particle mixture; the particles may be magnetizable and subjected to a magnetic field whereby the material becomes substantially solid. Fig. 1 shows apparatus for forming a tyre, and includes dies 34, 34 brought together to shape an annular core comprised by a flexible rubber diaphragm held between a fixed cap 6 on a pillar 3 and a cap 5 slidable on the pillar. A green tyre carcass 22, or a worn tyre which has been buffed, is placed around the diaphragm and the diaphragm interior is supplied with molten bismuth metal alloy via a piston and cylinder (12, 15), Fig. 2, not shown, and pipe 18, and the alloy is solidified by the feeding of cooling fluid by a pipe 21 into the pillar interior. The dies 34, 34 are replaced by dies 2, 2 providing a chamber 23 into which a curable elastomeric substance is injected through ports 4 to form the tyre tread and sidewalls One or more reinforcing layers may be positioned around the carcass before the injection. After the tyre has set, the alloy is melted by feeding heating fluid through the pipe 21. In a modification, Fig. 6, not shown, the core is formed by two coaxial flexible diaphragms (24, 25) encircling a solid filler (3) supplied with molten metal alloy through a port (29); heating and cooling fluid is supplied through ports (31). In a second modification, Fig. 8, not shown, a flexible hose (32) is contained within the diaphragm interior and encircles and connects with the pillar so that heating or cooling fluid may flow therethrough.
GB1516568A 1968-03-29 1968-03-29 Method and apparatus for forming articles e.g. pneumatic tyres Expired GB1261916A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1516568A GB1261916A (en) 1968-03-29 1968-03-29 Method and apparatus for forming articles e.g. pneumatic tyres
IE36369A IE33449B1 (en) 1968-03-29 1969-03-20 Method and apparatus for forming articles e.g. pneumatic tyres
FR6909431A FR2005116A1 (en) 1968-03-29 1969-03-28
DE19691916163 DE1916163A1 (en) 1968-03-29 1969-03-28 Method and device for producing molded bodies, in particular pneumatic tires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1516568A GB1261916A (en) 1968-03-29 1968-03-29 Method and apparatus for forming articles e.g. pneumatic tyres

Publications (1)

Publication Number Publication Date
GB1261916A true GB1261916A (en) 1972-01-26

Family

ID=10054173

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1516568A Expired GB1261916A (en) 1968-03-29 1968-03-29 Method and apparatus for forming articles e.g. pneumatic tyres

Country Status (4)

Country Link
DE (1) DE1916163A1 (en)
FR (1) FR2005116A1 (en)
GB (1) GB1261916A (en)
IE (1) IE33449B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038279A2 (en) * 1980-04-11 1981-10-21 The Goodyear Tire & Rubber Company Tire and method of reinforcement
EP0038280A2 (en) * 1980-04-11 1981-10-21 The Goodyear Tire & Rubber Company Process for making a tire
GB2120967A (en) * 1982-05-17 1983-12-14 Sumitomo Rubber Ind Fluid supplying and discharging apparatus for use in vulcanizing machine
US6224808B1 (en) 1996-08-01 2001-05-01 Conception Et Developpement Michelin S.A. Destructible core for use, in particular, in the assembling of a tire
EP1262310A1 (en) * 2001-05-29 2002-12-04 PIRELLI PNEUMATICI Società per Azioni Method and apparatus for moulding and vulcanizing vehicle tyres

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT356531B (en) * 1978-05-03 1980-05-12 Polyair Maschinenbau Gmbh METHOD FOR CASTING OR SPRAYING VEHICLE TIRES AND DEVICE FOR CARRYING OUT THE METHOD
US4253513A (en) * 1979-10-01 1981-03-03 The Goodyear Tire & Rubber Company Cast tire and method of manufacture
EP0032669B1 (en) * 1980-01-19 1983-10-12 Bayer Ag Method and apparatus for manufacturing reinforced tyres
DE3026240C2 (en) * 1980-07-10 1983-09-01 Metzeler Kautschuk GmbH, 8000 München Process for casting tires from a castable elastomer in a closed mold and mold for carrying out such a process
EP2420372B1 (en) * 2010-08-17 2014-03-12 Röchling Automotive AG & Co. KG Injection moulding device with a reusable, reformable foundry core and injection moulding method using such a foundry core
FR3068914B1 (en) * 2017-07-11 2020-09-04 Michelin & Cie METHOD OF MANUFACTURING A PNEUMATIC BANDAGE WITH A PERFECTED TREAD

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038279A2 (en) * 1980-04-11 1981-10-21 The Goodyear Tire & Rubber Company Tire and method of reinforcement
EP0038280A2 (en) * 1980-04-11 1981-10-21 The Goodyear Tire & Rubber Company Process for making a tire
EP0038280A3 (en) * 1980-04-11 1982-02-03 The Goodyear Tire & Rubber Company Tire and method of reinforcement
EP0038279A3 (en) * 1980-04-11 1982-02-17 The Goodyear Tire & Rubber Company Tire and method of reinforcement
GB2120967A (en) * 1982-05-17 1983-12-14 Sumitomo Rubber Ind Fluid supplying and discharging apparatus for use in vulcanizing machine
US6224808B1 (en) 1996-08-01 2001-05-01 Conception Et Developpement Michelin S.A. Destructible core for use, in particular, in the assembling of a tire
EP1262310A1 (en) * 2001-05-29 2002-12-04 PIRELLI PNEUMATICI Società per Azioni Method and apparatus for moulding and vulcanizing vehicle tyres

Also Published As

Publication number Publication date
DE1916163A1 (en) 1969-10-09
IE33449B1 (en) 1974-07-10
IE33449L (en) 1969-09-29
FR2005116A1 (en) 1969-12-05

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