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Patent Searching and Data


Title:
METHOD OF MANUFACTURING JOINT BOOT
Document Type and Number:
WIPO Patent Application WO/2005/118258
Kind Code:
A1
Abstract:
A method of manufacturing a joint boot for uniformly molding the wall thickness of a bellows part. A cylindrical parison (15) formed of a first portion (12) corresponding to a large diameter side mounting part (2), a second portion (13) corresponding to a small diameter side mounting part (4), and a third portion (14) connecting these both portions to each other is injection-molded by using a molding material. After the parison is cooled, the parison (15) is supported on a support body (16) so that the third portion (14) can concentrically surround the vertical intermediate part (21) of the support body (16) at a clearance. Only the third portion (14) among the first portion, the second portion, and the third portion is heated, from the radial outer side, to a set temperature by a heater (B), and then the third portion is covered by an outer mold (51), a gas is jetted to the inner peripheral surface of the third portion, and the third portion is pressed against the outer mold to blow-mold the bellows part (5).

Inventors:
Saito, Katsushi c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Ohshita, Takenori c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Imazu, Eiichi c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Application Number:
PCT/JP2005/004827
Publication Date:
December 15, 2005
Filing Date:
March 17, 2005
Export Citation:
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Assignee:
TOYO TIRE & RUBBER CO., LTD. (17-18, Edobori 1-chome Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Saito, Katsushi c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Ohshita, Takenori c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
Imazu, Eiichi c/o Toyo Tire & Rubber Co. Ltd. (17-18, Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 55000, JP)
International Classes:
B29C49/06; B29C49/64; B29C49/66; F16D3/84; F16J3/04; F16J15/52; (IPC1-7): B29C49/64; B29C49/06; F16D3/84; F16J3/04; F16J15/52
Foreign References:
JP2003222155A2003-08-08
JPH10272679A1998-10-13
JPH01250673A1989-10-05
EP0915264A21999-05-12
JP2003329057A2003-11-19
Attorney, Agent or Firm:
Tsutada, Akiko (9th Floor, Nissei Bingomachi Bldg. 7-10, Bingomachi 1-chome, Chuo-ku, Osaka-sh, Osaka 51, 54100, JP)
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