JPS57103965A - Method of molding molded resin gear - Google Patents

Method of molding molded resin gear

Info

Publication number
JPS57103965A
JPS57103965A JP15766581A JP15766581A JPS57103965A JP S57103965 A JPS57103965 A JP S57103965A JP 15766581 A JP15766581 A JP 15766581A JP 15766581 A JP15766581 A JP 15766581A JP S57103965 A JPS57103965 A JP S57103965A
Authority
JP
Japan
Prior art keywords
arms
molding
item
plate
molded
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
JP15766581A
Other languages
Japanese (ja)
Other versions
JPS5943671B2 (en
Inventor
Yoshihiro Hara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP15766581A priority Critical patent/JPS5943671B2/en
Publication of JPS57103965A publication Critical patent/JPS57103965A/en
Publication of JPS5943671B2 publication Critical patent/JPS5943671B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1657—Making multilayered or multicoloured articles using means for adhering or bonding the layers or parts to each other
    • B29C2045/1665—Shrinkage bonds

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Gears, Cams (AREA)

Abstract

PURPOSE: To provide a method for molding a resin gear by insert molding or different material molding, wherein a rim section of a secondary moled item is deformed by the molding shrinkage to secure a primary molded item with the secondary molded item thereby the separation of the items is prevented.
CONSTITUTION: In molding, the primary item 3 is molded to have a boss 1 at its center and plate-like arms 2, and the secondary item 6 is formed around the outer circumference to have the rim section 4 thicker than the plate-like arms 2 and a serrated section 5 thinner that the plate-like arms 2. When the molded resin is cooled and hardened with the passage of time, the rim section 4 is shrinked toward the center. On said occasion, as the serrated section 5 positioned on the outer circumference of the arms 2 are prevented from shrinking, and the opposite thicker ends 7, 8 of the rim section 4 are shrinked to reduce the radius, they hold the opposite thicker sides of the plate-like arms 2, and therefore the boundary surfaces of the items 3, 6 of materials are prevented from separating from each other.
COPYRIGHT: (C)1982,JPO&Japio
JP15766581A 1981-10-02 1981-10-02 Molding method for resin molded gears Expired JPS5943671B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15766581A JPS5943671B2 (en) 1981-10-02 1981-10-02 Molding method for resin molded gears

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15766581A JPS5943671B2 (en) 1981-10-02 1981-10-02 Molding method for resin molded gears

Publications (2)

Publication Number Publication Date
JPS57103965A true JPS57103965A (en) 1982-06-28
JPS5943671B2 JPS5943671B2 (en) 1984-10-23

Family

ID=15654699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15766581A Expired JPS5943671B2 (en) 1981-10-02 1981-10-02 Molding method for resin molded gears

Country Status (1)

Country Link
JP (1) JPS5943671B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6993993B2 (en) * 2001-05-29 2006-02-07 Matsushita Electric Industrial Co., Ltd. Sheet metal outsert-molded gear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6993993B2 (en) * 2001-05-29 2006-02-07 Matsushita Electric Industrial Co., Ltd. Sheet metal outsert-molded gear

Also Published As

Publication number Publication date
JPS5943671B2 (en) 1984-10-23

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