JPS57203512A - Stripping method and apparatus for synthetic resin molding with undercut section - Google Patents

Stripping method and apparatus for synthetic resin molding with undercut section

Info

Publication number
JPS57203512A
JPS57203512A JP8849981A JP8849981A JPS57203512A JP S57203512 A JPS57203512 A JP S57203512A JP 8849981 A JP8849981 A JP 8849981A JP 8849981 A JP8849981 A JP 8849981A JP S57203512 A JPS57203512 A JP S57203512A
Authority
JP
Japan
Prior art keywords
block
cap
moved
undercut section
synthetic resin
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
JP8849981A
Other languages
Japanese (ja)
Inventor
Yasuyuki Sano
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 JP8849981A priority Critical patent/JPS57203512A/en
Publication of JPS57203512A publication Critical patent/JPS57203512A/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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles
    • B29C45/4421—Removing or ejecting moulded articles for undercut articles using expansible or collapsible cores

Landscapes

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

Abstract

PURPOSE:To obtain a stripping apparatus applicable to even small-size moldings and capable of shortening molding cycle by a method wherein a core to form the inside cylindrical shape of a molding is made up of two blocks. CONSTITUTION:After an injection molding, molds are opened to open up a splitting face Y, a conical block 20 and a mobile block 38 are moved with a movable mold 6, and the first block 24 is put between both inclined faces 30 and 36 and moved toward the inside center of a cap 8. Then, a splitting face X is opened, movable molds 4 and 6 are moved in relation to a fixed mold 2, and a rammer 50 and an ejector pin 22 are projected. The second block 26 is guided to the inclined face 44, moves toward the inside center of the cap 8 while sliding, and is separated from the inside screw 14 and an undercut section 16 in the cap 8.
JP8849981A 1981-06-09 1981-06-09 Stripping method and apparatus for synthetic resin molding with undercut section Pending JPS57203512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8849981A JPS57203512A (en) 1981-06-09 1981-06-09 Stripping method and apparatus for synthetic resin molding with undercut section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8849981A JPS57203512A (en) 1981-06-09 1981-06-09 Stripping method and apparatus for synthetic resin molding with undercut section

Publications (1)

Publication Number Publication Date
JPS57203512A true JPS57203512A (en) 1982-12-13

Family

ID=13944507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8849981A Pending JPS57203512A (en) 1981-06-09 1981-06-09 Stripping method and apparatus for synthetic resin molding with undercut section

Country Status (1)

Country Link
JP (1) JPS57203512A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118522U (en) * 1983-01-26 1984-08-10 三洋電機株式会社 injection mold
JPS605814U (en) * 1983-06-24 1985-01-16 積水化学工業株式会社 injection mold
JP4659286B2 (en) * 2001-07-13 2011-03-30 オリンパス株式会社 Cylindrical molded product injection mold and injection molding method
EP2343178A1 (en) * 2010-01-09 2011-07-13 Poschmann Holding GmbH & Co. KG Method and device for demoulding injection moulded hollow bodies provided with undercuts in the interior contour
JP2013518002A (en) * 2010-01-28 2013-05-20 グリーンキャップ カンパニー リミテッド Packaging container stopper
JP2013237212A (en) * 2012-05-16 2013-11-28 Technocrats Corp Undercut processing mechanism
CN103862598A (en) * 2012-12-17 2014-06-18 汉达精密电子(昆山)有限公司 Sliding block mechanism of die
CN109093941A (en) * 2018-10-09 2018-12-28 深圳市联星服装辅料有限公司 A kind of one-pass molding wheel mouth rivet mold
US11325297B2 (en) 2017-07-04 2022-05-10 Nissei Asb Machine Co., Ltd. Injection molding mold, and injection molding method for hollow article

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118522U (en) * 1983-01-26 1984-08-10 三洋電機株式会社 injection mold
JPH0131461Y2 (en) * 1983-01-26 1989-09-27
JPS605814U (en) * 1983-06-24 1985-01-16 積水化学工業株式会社 injection mold
JPS646270Y2 (en) * 1983-06-24 1989-02-17
JP4659286B2 (en) * 2001-07-13 2011-03-30 オリンパス株式会社 Cylindrical molded product injection mold and injection molding method
EP2343178A1 (en) * 2010-01-09 2011-07-13 Poschmann Holding GmbH & Co. KG Method and device for demoulding injection moulded hollow bodies provided with undercuts in the interior contour
JP2013518002A (en) * 2010-01-28 2013-05-20 グリーンキャップ カンパニー リミテッド Packaging container stopper
JP2013237212A (en) * 2012-05-16 2013-11-28 Technocrats Corp Undercut processing mechanism
CN103862598A (en) * 2012-12-17 2014-06-18 汉达精密电子(昆山)有限公司 Sliding block mechanism of die
US11325297B2 (en) 2017-07-04 2022-05-10 Nissei Asb Machine Co., Ltd. Injection molding mold, and injection molding method for hollow article
CN109093941A (en) * 2018-10-09 2018-12-28 深圳市联星服装辅料有限公司 A kind of one-pass molding wheel mouth rivet mold
CN109093941B (en) * 2018-10-09 2021-01-26 深圳市联星服装辅料有限公司 One shot forming wheel mouth hits nail mould

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