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Patent Searching and Data


Title:
METHOD FOR PRODUCING TIRE VULCANIZATION MOULD, AND TIRE VULCANIZATION MOULD
Document Type and Number:
WIPO Patent Application WO/2019/039061
Kind Code:
A1
Abstract:
This method for producing a tire vulcanization mould is provided with: a step in which a plurality of cylindrical mould blanks are prepared which have the same shape, and in which moulding protrusions having a complementary relationship with wide grooves of a tire are formed on inner surfaces of central portions in the axial direction; a step in which a plurality of through slits, which extend in the axial direction in the central portion of each of the mould blanks in the axial direction, and which are separated in the circumferential direction, are formed by machining, to form mould pieces having some of the moulding protrusions formed on the inner surfaces between adjacent through slits; a step in which the mould pieces are cut out from remaining rings which continue from one end to another end of the mould pieces in the axial direction, and extend in the circumferential direction; and a step in which a task in which the mould pieces are taken out sequentially one by one from the plurality of mould blanks, and installed in turn on inner surfaces of a plurality of holders, is repeatedly performed, to form a plurality of mould segments comprising the holders and the mould pieces.

Inventors:
ISHIHARA YASUYUKI (JP)
Application Number:
PCT/JP2018/023338
Publication Date:
February 28, 2019
Filing Date:
June 19, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B29C33/02; B29C33/38; B29L30/00
Foreign References:
JP2015083389A2015-04-30
JP2005161575A2005-06-23
JP2010201632A2010-09-16
JP2006315065A2006-11-24
JP2005231259A2005-09-02
JPH05220753A1993-08-31
JP2017159595A2017-09-14
Other References:
See also references of EP 3674049A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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