JPS5793129A - Molding device for synthetic resin article having undercut part - Google Patents

Molding device for synthetic resin article having undercut part

Info

Publication number
JPS5793129A
JPS5793129A JP17002480A JP17002480A JPS5793129A JP S5793129 A JPS5793129 A JP S5793129A JP 17002480 A JP17002480 A JP 17002480A JP 17002480 A JP17002480 A JP 17002480A JP S5793129 A JPS5793129 A JP S5793129A
Authority
JP
Japan
Prior art keywords
mold
opening direction
slide core
angle
undercut
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.)
Pending
Application number
JP17002480A
Other languages
Japanese (ja)
Inventor
Kazunori Masuya
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.)
Kojima Industries Corp
Original Assignee
Kojima Press Industry 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 Kojima Press Industry Co Ltd filed Critical Kojima Press Industry Co Ltd
Priority to JP17002480A priority Critical patent/JPS5793129A/en
Publication of JPS5793129A publication Critical patent/JPS5793129A/en
Pending 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent the penetration of a flash through a mating part of a mold even in the case where the working temperature of the mold is high, by specifying the angle of inclination of a sliding mechanism of a slide core against a mold-opening direction and the angle of inclination of both sliding surfaces of the slide core. CONSTITUTION:By a mold-opening operation, a recessed groove 36 of a length L is slidden between ridges 22, the slide core 20 is engaged with a slide retainer 34, is drawn in the direction orthogonal to the mold-opening direction, is disengaged from an undercut-molding part 42 of a cavity 40 and is disengaged also from a stepped part 18 of a stopper 16, so that it is released from a restraint in the mold-opening direction. The sliding mechanism 48 for the slide core 20 is inclined at an angle of 15 deg. against the mold-opening direction and both the sliding surfaces of the core 20 are inclined at angles of 6 deg. so as to ensure a correct operation of the mechanism 48, reduce the frictional resistance at the time of operation and facilitate the treatment of the mold at the undercut part.
JP17002480A 1980-12-02 1980-12-02 Molding device for synthetic resin article having undercut part Pending JPS5793129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17002480A JPS5793129A (en) 1980-12-02 1980-12-02 Molding device for synthetic resin article having undercut part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17002480A JPS5793129A (en) 1980-12-02 1980-12-02 Molding device for synthetic resin article having undercut part

Publications (1)

Publication Number Publication Date
JPS5793129A true JPS5793129A (en) 1982-06-10

Family

ID=15897178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17002480A Pending JPS5793129A (en) 1980-12-02 1980-12-02 Molding device for synthetic resin article having undercut part

Country Status (1)

Country Link
JP (1) JPS5793129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603968A (en) * 1994-04-28 1997-02-18 Toyoda Gosei Co., Ltd. Apparatus for manufacturing a steering wheel pad

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603968A (en) * 1994-04-28 1997-02-18 Toyoda Gosei Co., Ltd. Apparatus for manufacturing a steering wheel pad
US5728344A (en) * 1994-04-28 1998-03-17 Toyoda Gosei Co., Ltd. Method of molding a steering wheel pad
US5766655A (en) * 1994-04-28 1998-06-16 Toyoda Gosei Co., Ltd. Apparatus for manufacturing a steering wheel pad
US5895621A (en) * 1994-04-28 1999-04-20 Toyoda Gosei Co., Ltd. Method for manufacturing a steering wheel pad

Similar Documents

Publication Publication Date Title
GB1306697A (en) Injection moulding machines
ATE41328T1 (en) PRESSING PISTON WITH ACCUMULATION CHAMBER.
ES470058A1 (en) Injection molding apparatus
ES8301439A1 (en) Process for injection-moulding plastics.
GB1352379A (en) Bundling strap
JPS5651326A (en) Method and apparatus for manufacturing slide fastener with synthetic resin zipper
GB1322736A (en) Apparatus for hot runner injection moulding
ES416956A1 (en) End stop means for sliding clasp fasteners
GB2014080A (en) Cold channel moulds for thermosetting plastics materials
JPS5793129A (en) Molding device for synthetic resin article having undercut part
JPS55140537A (en) Hot runner for injection molding
DK158073C (en) DEVICE FOR STRENGTHING OF EXTENSIVE CONCRETE TOPICS
JPS55103938A (en) Forming device for plastic hinge
DE59505478D1 (en) Injection mold
JPS557423A (en) Molding metal mold of rubber
JPS5515831A (en) Method of watching metal mould
JPS57182414A (en) Screw for uniaxial extrusion molding machine
GB1046854A (en) Improvements in bowling pins
GB1389317A (en) Automatic ejector and ejector return means in injection moulds
JPS57196208A (en) Plastic composite containing filler for molding optical connector or the like and precise molded goods using this composite
FR1602503A (en) Injection moulding machine
JPS55100140A (en) Molding method and molding
FR2344243A1 (en) Sliding clasp fasteners mfr. from toothed tapes - by removing teeth at required location and fitting end pieces
JPS5212255A (en) Process for producing lustrous molded articles based on synthetic resi ns
FR2063697A5 (en) Moulding synthetic materials with inserts