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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING TIRE MOLD
Document Type and Number:
WIPO Patent Application WO/2020/050267
Kind Code:
A1
Abstract:
The purpose of the present invention is to easily form a plurality of mold pieces forming a slit vent and to improve the manufacturing efficiency of a tire mold. The mold pieces mold a tire by means of molding parts thereof in a state in which a slit vent is formed between mutual slit forming parts. The plurality of mold pieces are formed of a mold material (30). On a back surface part (31) side of the mold material (30), a plurality of dividing grooves (33) wider than the slit vent are formed along dividing positions of the plurality of mold pieces. The mold material (30) is cut by laser at the bottoms of the plurality of dividing grooves (33) to divide the plurality of mold pieces, and a slit forming part is formed on the molding part side of the plurality of mold pieces.

Inventors:
ISHIHARA YASUYUKI (JP)
Application Number:
PCT/JP2019/034603
Publication Date:
March 12, 2020
Filing Date:
September 03, 2019
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B29C33/02; B29C33/10; B29C33/38; B29C35/02; B29K21/00
Foreign References:
JP2006159669A2006-06-22
JP2007290202A2007-11-08
JP2008194946A2008-08-28
JP2008260135A2008-10-30
JP2001232642A2001-08-28
JP2001170711A2001-06-26
JPH05220753A1993-08-31
Attorney, Agent or Firm:
NEMOTO, Keiji (JP)
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