JPS55114541A - Method of releasing plastic product from mold - Google Patents

Method of releasing plastic product from mold

Info

Publication number
JPS55114541A
JPS55114541A JP2272079A JP2272079A JPS55114541A JP S55114541 A JPS55114541 A JP S55114541A JP 2272079 A JP2272079 A JP 2272079A JP 2272079 A JP2272079 A JP 2272079A JP S55114541 A JPS55114541 A JP S55114541A
Authority
JP
Japan
Prior art keywords
undercut
mold
molds
product
molded product
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
JP2272079A
Other languages
Japanese (ja)
Other versions
JPS5759045B2 (en
Inventor
Genjiro Kubota
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP2272079A priority Critical patent/JPS55114541A/en
Publication of JPS55114541A publication Critical patent/JPS55114541A/en
Publication of JPS5759045B2 publication Critical patent/JPS5759045B2/ja
Granted 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4407—Removing or ejecting moulded articles for undercut articles by flexible movement of undercut portions of the articles

Abstract

PURPOSE:To release molded product from the molds easily with no use of insert, by turning an undercut portion to an extractable position around a hinge portion located at an intermediate portion between a portion of the product having the undercut and the portion permitting extracting of the product from the molds. CONSTITUTION:Undercut 6 is shaped by slide core 5 at its right side and by movable mold 3 at its left side, and a hinge portion 11 is formed in a cavity of molds 4 at an intermediate portion between portion 10 permitting extraction of molded product 1A and the portion where undercut 6 is formed. After injection molding, slide core 5 is disengaged and the portion having undercut 6 is turned to the extractable position through operation of ejector pin 13. Then, the extractable portion 10 is pushed by another ejector pin 12, whereby molded product 1A can be released out of the mold with ease.
JP2272079A 1979-02-28 1979-02-28 Method of releasing plastic product from mold Granted JPS55114541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2272079A JPS55114541A (en) 1979-02-28 1979-02-28 Method of releasing plastic product from mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2272079A JPS55114541A (en) 1979-02-28 1979-02-28 Method of releasing plastic product from mold

Publications (2)

Publication Number Publication Date
JPS55114541A true JPS55114541A (en) 1980-09-03
JPS5759045B2 JPS5759045B2 (en) 1982-12-13

Family

ID=12090615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2272079A Granted JPS55114541A (en) 1979-02-28 1979-02-28 Method of releasing plastic product from mold

Country Status (1)

Country Link
JP (1) JPS55114541A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741088A (en) * 1985-03-21 1988-05-03 Somova S.P.A. Method of making a delivery head for containers of substances to be nebulized having a break-up plastic insert integrally formed with the head
US5613550A (en) * 1994-11-28 1997-03-25 Nippondenso Co., Ltd. Tank for a heat exchanger
US6187247B1 (en) 1998-05-13 2001-02-13 Velcro Industries B.V. Injection molding parts with fastener elements
US6224364B1 (en) 1998-09-21 2001-05-01 Velcro Industries B.V. Injection molding products having fastener elements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60249565A (en) * 1984-05-19 1985-12-10 Olympus Optical Co Ltd Stopper of work shaft of lens working machine at fixed position

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4741088A (en) * 1985-03-21 1988-05-03 Somova S.P.A. Method of making a delivery head for containers of substances to be nebulized having a break-up plastic insert integrally formed with the head
US5613550A (en) * 1994-11-28 1997-03-25 Nippondenso Co., Ltd. Tank for a heat exchanger
US6187247B1 (en) 1998-05-13 2001-02-13 Velcro Industries B.V. Injection molding parts with fastener elements
US6224364B1 (en) 1998-09-21 2001-05-01 Velcro Industries B.V. Injection molding products having fastener elements

Also Published As

Publication number Publication date
JPS5759045B2 (en) 1982-12-13

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