METHOD FOR MANUFACTURING SEAL RING, AND SEAL RING

Title:

METHOD FOR MANUFACTURING SEAL RING, AND SEAL RING

Document Type and Number:

WIPO Patent Application WO/2020/157834

Kind Code:

A1

Abstract:

This method for manufacturing a seal ring (10) includes: a base ring forming step of using a resin as a material to form a base ring (30) in which an abutment (47) having an overlap in at least an axial direction exists in a gas-tight manner between a one-end side engaging portion (45) on one end side in a circumferential direction and an other-end side engaging portion (46) on the other end side in the circumferential direction; a cavity arrangement step of arranging the base ring (30) in a cavity (101) of a mold (100); a tension ring setting step of setting, in a ring arrangement portion (32) of the base ring (30), a metal tension ring (60) having a gap portion (61) in a position corresponding to the one-end side engaging portion (45) and the other-end side engaging portion (46); and a sealing step of causing liquid resin to flow into the cavity (101) to enclose the tension ring (60) by forming a lid portion (50), and to form retaining portions (36), (51) for preventing the base ring (30) and the lid portion (50) from detaching from one another, between the base ring (30) and the lid portion (50).

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Inventors:

HAMA MASAHIDE (JP)
KOYAMA TETSUJI (JP)
OGA TEPPEI (JP)

Application Number:

PCT/JP2019/003005

Publication Date:

August 06, 2020

Filing Date:

January 29, 2019

Export Citation:

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Assignee:

TPR CO LTD (JP)

International Classes:

F16J9/26; F16J9/16

Foreign References:

JPS57194956U	1982-12-10
JP2017180726A	2017-10-05
JPH0656565U	1994-08-05
JPS5516526U	1980-02-01
JPS6220262U	1987-02-06
JP2010181018A	2010-08-19
JPH0158863U	1989-04-13

Other References: