GB906538A - Improvements in the manufacture of tyres - Google Patents

Improvements in the manufacture of tyres

Info

Publication number
GB906538A
GB906538A GB291358A GB291358A GB906538A GB 906538 A GB906538 A GB 906538A GB 291358 A GB291358 A GB 291358A GB 291358 A GB291358 A GB 291358A GB 906538 A GB906538 A GB 906538A
Authority
GB
United Kingdom
Prior art keywords
carcase
end parts
tread
screws
parts
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
GB291358A
Inventor
Henry Raymond Fletcher
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 Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB291358A priority Critical patent/GB906538A/en
Priority to ES0246800A priority patent/ES246800A1/en
Priority to FR785308A priority patent/FR1221921A/en
Priority to DED29894A priority patent/DE1228796B/en
Publication of GB906538A publication Critical patent/GB906538A/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)
    • 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)
    • B29D30/08—Building tyres
    • B29D30/10—Building tyres on round cores, i.e. the shape of the core is approximately identical with the shape of the completed tyre
    • 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)
    • B29D30/08—Building tyres
    • B29D2030/086—Building the tyre carcass by combining two or more sub-assemblies, e.g. two half-carcasses
    • 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)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3214—Locking the beads on the drum; details of the drum in the bead locking areas, e.g. drum shoulders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

906,538. Building pneumatic tyres. DUNLOP RUBBER CO. Ltd. Jan. 26, 1959 [Jan. 29, 1958], No. 2913/58. Class 144 (1). A pneumatic tyre is built by first forming a flat band carcase 17 on a building drum comprised of two axially-spaced, coaxial, mutually approachable end parts 1, 2 which serve to receive and shape the beads 9 and lower sidewall regions of the carcase into substantially their final shape, and then applying pressure to the inner surface of the crown region of the carcase whilst simultaneously approaching the end parts 1 and 2 towards each other so that the carcase is shaped into toric form to contact a tread 19 and breaker 18 centred around the carcase. As shown, the end parts 1, 2 form the shoulders of a high crown former and are connected by rotatable screws 4 which engage inner peripheral rings 3 of the parts 1, 2 with respectively opposite-hand screw engagement whereby rotation of the screws 4 effect simultaneous approach or receding movement of the parts 1, 2. The screws 4 are journalled in spiders 7 which are mounted on the drum shaft (not shown) and when the carcase band is completed the spiders 7 are removed in turn to permit the assembly of bead-clamping rings 11, 12 against the carcase beads 9. The rings 11, 12 have sealing engagement on the drum shaft and the ring 11 has an entry 16 for the supply of pressure air to shape the carcase. The required shaping may, however, be achieved centrifugally instead of by inflation. The tread 19, and breaker 18 if fitted, may be centred around the carcase in a segmented removable ring 20 which may be internally recessed to receive the tread either as shown in Fig. 3, or sufficiently to carry the tread in its shaped condition when on the finished tyre. In alternative embodiments, a removable rigid centre portion may be inserted between the end parts 1, 2 to support the carcase plies during building thereof, the centre portion being removed prior to the shaping operation, or a flexible rubber diaphragm may be stretched between, and clamped to, the end parts, the pressure air being introduced through the diaphragm to act directly on the carcase when shaping the tyre.
GB291358A 1958-01-29 1958-01-29 Improvements in the manufacture of tyres Expired GB906538A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB291358A GB906538A (en) 1958-01-29 1958-01-29 Improvements in the manufacture of tyres
ES0246800A ES246800A1 (en) 1958-01-29 1959-01-27 Improvements in the manufacture of tyres
FR785308A FR1221921A (en) 1958-01-29 1959-01-29 Improvements in tire manufacturing
DED29894A DE1228796B (en) 1958-01-29 1959-01-29 Method and device for building pneumatic vehicle tires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB291358A GB906538A (en) 1958-01-29 1958-01-29 Improvements in the manufacture of tyres

Publications (1)

Publication Number Publication Date
GB906538A true GB906538A (en) 1962-09-26

Family

ID=9748432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB291358A Expired GB906538A (en) 1958-01-29 1958-01-29 Improvements in the manufacture of tyres

Country Status (2)

Country Link
ES (1) ES246800A1 (en)
GB (1) GB906538A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402090A (en) * 1965-05-14 1968-09-17 Gen Tire & Rubber Co Tire shaping apparatus
US3475254A (en) * 1965-01-05 1969-10-28 Gen Tire & Rubber Co Tire building machine
EP1044791A2 (en) * 1999-03-15 2000-10-18 Bridgestone Corporation Method of manufacturing pneumatic tire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475254A (en) * 1965-01-05 1969-10-28 Gen Tire & Rubber Co Tire building machine
US3402090A (en) * 1965-05-14 1968-09-17 Gen Tire & Rubber Co Tire shaping apparatus
EP1044791A2 (en) * 1999-03-15 2000-10-18 Bridgestone Corporation Method of manufacturing pneumatic tire
EP1044791A3 (en) * 1999-03-15 2001-04-11 Bridgestone Corporation Method of manufacturing pneumatic tire
US6398893B1 (en) 1999-03-15 2002-06-04 Bridgestone Corporation Method of manufacturing pneumatic tire

Also Published As

Publication number Publication date
ES246800A1 (en) 1959-08-16

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