JPS5577545A - Injection-compression molding method - Google Patents

Injection-compression molding method

Info

Publication number
JPS5577545A
JPS5577545A JP15219578A JP15219578A JPS5577545A JP S5577545 A JPS5577545 A JP S5577545A JP 15219578 A JP15219578 A JP 15219578A JP 15219578 A JP15219578 A JP 15219578A JP S5577545 A JPS5577545 A JP S5577545A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
injection
transfer
mold
compression
toggle
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
JP15219578A
Other versions
JPS5722009B2 (en )
Inventor
Kaname Hashimoto
Norio Isomatsu
Original Assignee
Daicel Chem Ind Ltd
Japan Steel Works Ltd:The
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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561Injection-compression moulding

Abstract

PURPOSE:To simply carry out injection-compression molding by using an injection molding machine having a toggle-pressing type mold tightening means, which molding machine is provided with stoppers on divers therein for maintaining a compression gap at a constant level. CONSTITUTION:A transfer plate 9 is moved toward a fixed plate 10 via a toggle 11 by means of a mold transfer cylinder 13. Transfer pieces 4 are attached via springs 3 to a transfer element 2. When the toggle 11 is fully extended, a parting surface 5 is pressed by the transfer pieces 4 owing to the elastic forces of the springs 3 to seal a molding space and maintain a compression gap d1. When an injection operation is conducted by using this mold, the parting surface 5, to which an injection pressure is applied, is prevented from moving away from the transfer pieces 4, by position controllable stoppers 15 mounted on those portions of divers 12 which are behind a cylinder box 16. As a result, the compression gap is retained to a predetermined width. The transfer element 2 is then compressed against a cavity 6 by a mold tightening cylinder 14 to effect injection-compression molding.
JP15219578A 1978-12-08 1978-12-08 Expired JPS5722009B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15219578A JPS5722009B2 (en) 1978-12-08 1978-12-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15219578A JPS5722009B2 (en) 1978-12-08 1978-12-08

Publications (2)

Publication Number Publication Date
JPS5577545A true true JPS5577545A (en) 1980-06-11
JPS5722009B2 JPS5722009B2 (en) 1982-05-11

Family

ID=15535130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15219578A Expired JPS5722009B2 (en) 1978-12-08 1978-12-08

Country Status (1)

Country Link
JP (1) JPS5722009B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109620A (en) * 1980-12-26 1982-07-08 Matsushita Electric Ind Co Ltd Molding apparatus of disk like recording medium
JPS58167132A (en) * 1982-03-29 1983-10-03 Matsushita Electric Ind Co Ltd Injection-compression molding machine
US4519763A (en) * 1982-03-29 1985-05-28 Matsushita Electric Industrial Co., Ltd. Apparatus for injection compression molding
EP0244783A2 (en) * 1986-05-05 1987-11-11 Galic/Maus Ventures Method and apparatus for molding articles
JPH0319818A (en) * 1989-06-16 1991-01-29 Toyoda Gosei Co Ltd Molding method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57109620A (en) * 1980-12-26 1982-07-08 Matsushita Electric Ind Co Ltd Molding apparatus of disk like recording medium
JPS6212006B2 (en) * 1980-12-26 1987-03-16 Matsushita Denki Sangyo Kk
JPS58167132A (en) * 1982-03-29 1983-10-03 Matsushita Electric Ind Co Ltd Injection-compression molding machine
US4519763A (en) * 1982-03-29 1985-05-28 Matsushita Electric Industrial Co., Ltd. Apparatus for injection compression molding
JPH0313050B2 (en) * 1982-03-29 1991-02-21 Matsushita Denki Sangyo Kk
EP0244783A2 (en) * 1986-05-05 1987-11-11 Galic/Maus Ventures Method and apparatus for molding articles
JPH0319818A (en) * 1989-06-16 1991-01-29 Toyoda Gosei Co Ltd Molding method

Also Published As

Publication number Publication date Type
JPS5722009B2 (en) 1982-05-11 grant

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