JPS6430720A - Two-stage insert-molded product and manufacture thereof - Google Patents

Two-stage insert-molded product and manufacture thereof

Info

Publication number
JPS6430720A
JPS6430720A JP18552287A JP18552287A JPS6430720A JP S6430720 A JPS6430720 A JP S6430720A JP 18552287 A JP18552287 A JP 18552287A JP 18552287 A JP18552287 A JP 18552287A JP S6430720 A JPS6430720 A JP S6430720A
Authority
JP
Japan
Prior art keywords
molding part
primary molding
notch
shaft hole
primary
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.)
Granted
Application number
JP18552287A
Other languages
Japanese (ja)
Other versions
JPH0628875B2 (en
Inventor
Eiji Miyamoto
Shigeyoshi Soeda
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.)
Ebara Corp
Original Assignee
Ebara Corp
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 Ebara Corp filed Critical Ebara Corp
Priority to JP62185522A priority Critical patent/JPH0628875B2/en
Publication of JPS6430720A publication Critical patent/JPS6430720A/en
Publication of JPH0628875B2 publication Critical patent/JPH0628875B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent local separation and poor weld from developing on the weld surface between a primary molding part and a secondary molding parts and consequently make it possible to bring the two molding parts into strong and close contact with each other by a method wherein at least either one of an inversed tapered notch and a fine groove is formed on the contact surface between the primary molding part and the secondary molding part and also splines are formed on the contact surface. CONSTITUTION:A continuous annular notch 8 is provided at the outer periphery of the out side end face 6a of a primary molding part 6 and a continuous annular fine groove 9 is provided inside the notch 8. The faces along the axis line of the notch 8 and of the fine groove 8 are formed in the inversed tapered shapes at an angle of 2-3 deg. toward an shaft hole 5. Further, a plurality of notches 10 are provided on the inner periphery of the out side end face be in the peripheral direction at fixed space intervals. A gap 11 is provided nearly along the total length of the shaft hole 5 so as to form a secondary molding part 7 between the primary molding part 6 and the shaft hole 5. A plurality of splines 12, which are parallel to the shaft center line, are provided on the inner peripheral surface of the primary molding part 6 in the peripheral direction at predetermined space intervals. Furthermore, a continuous annular kerf groove 13 is provided on a peripheral surface contacting the shaft hole 5 at the other end side end face 6d of the primary molding part 6. After the molding of the primary molding part 6, resin is injected in a cavity part for the second stage insert molding so as to form the secondary molding part 7 by filling the cavity part with resin.
JP62185522A 1987-07-27 1987-07-27 Two-step insert molding and method for producing the same Expired - Lifetime JPH0628875B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62185522A JPH0628875B2 (en) 1987-07-27 1987-07-27 Two-step insert molding and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62185522A JPH0628875B2 (en) 1987-07-27 1987-07-27 Two-step insert molding and method for producing the same

Publications (2)

Publication Number Publication Date
JPS6430720A true JPS6430720A (en) 1989-02-01
JPH0628875B2 JPH0628875B2 (en) 1994-04-20

Family

ID=16172267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62185522A Expired - Lifetime JPH0628875B2 (en) 1987-07-27 1987-07-27 Two-step insert molding and method for producing the same

Country Status (1)

Country Link
JP (1) JPH0628875B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215341A (en) * 1990-05-10 1993-06-01 Ebara Corporation Structural member molded of resin having a metal ring insert and method of producing the same
US6997330B2 (en) * 2003-02-20 2006-02-14 Siderca S.A.I.C Apparatus and method for storing or shipping elongated members
US8179502B2 (en) 2003-12-15 2012-05-15 Genoa Color Technologies Ltd. Multi-color liquid crystal display

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993333A (en) * 1982-11-19 1984-05-29 Sansho Giken Kk Rotary part made of synthetic resin and manufacture thereof
JPS5983517U (en) * 1982-11-30 1984-06-06 岐阜精機工業株式会社 Inserts for injection molded products
JPS59132449U (en) * 1983-02-25 1984-09-05 橋本フオ−ミング工業株式会社 End cap attachment structure for resin molding
JPS60179591A (en) * 1984-02-23 1985-09-13 積水化学工業株式会社 Pipe joint made of synthetic resin and molding die thereof
JPS61222714A (en) * 1985-03-28 1986-10-03 Mitsubishi Electric Corp Manufacture of resin molded body

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993333A (en) * 1982-11-19 1984-05-29 Sansho Giken Kk Rotary part made of synthetic resin and manufacture thereof
JPS5983517U (en) * 1982-11-30 1984-06-06 岐阜精機工業株式会社 Inserts for injection molded products
JPS59132449U (en) * 1983-02-25 1984-09-05 橋本フオ−ミング工業株式会社 End cap attachment structure for resin molding
JPS60179591A (en) * 1984-02-23 1985-09-13 積水化学工業株式会社 Pipe joint made of synthetic resin and molding die thereof
JPS61222714A (en) * 1985-03-28 1986-10-03 Mitsubishi Electric Corp Manufacture of resin molded body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5215341A (en) * 1990-05-10 1993-06-01 Ebara Corporation Structural member molded of resin having a metal ring insert and method of producing the same
US6997330B2 (en) * 2003-02-20 2006-02-14 Siderca S.A.I.C Apparatus and method for storing or shipping elongated members
US8179502B2 (en) 2003-12-15 2012-05-15 Genoa Color Technologies Ltd. Multi-color liquid crystal display

Also Published As

Publication number Publication date
JPH0628875B2 (en) 1994-04-20

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