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JPS55135636A - Mold method characterized by insertion of drawable soft core during injection molding of resin - Google Patents

Mold method characterized by insertion of drawable soft core during injection molding of resin

Info

Publication number
JPS55135636A
JPS55135636A JP4319979A JP4319979A JPS55135636A JP S55135636 A JPS55135636 A JP S55135636A JP 4319979 A JP4319979 A JP 4319979A JP 4319979 A JP4319979 A JP 4319979A JP S55135636 A JPS55135636 A JP S55135636A
Authority
JP
Japan
Prior art keywords
soft core
core
resin
drawable
injection molding
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
JP4319979A
Other languages
Japanese (ja)
Inventor
Keiji Kizu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4319979A priority Critical patent/JPS55135636A/en
Publication of JPS55135636A publication Critical patent/JPS55135636A/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
    • B29C45/4478—Removing or ejecting moulded articles for undercut articles using non-rigid undercut forming elements, e.g. elastic or resilient

Landscapes

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

Abstract

PURPOSE:To facilitate separation between a soft core and a molded resin body and facilitate mold releasing by a method wherein a soft core and a hard plug-in pin core for supporting the soft core are inserted in the cavity between upper and lower molds, and the pin core is drawn out after injection of a resin. CONSTITUTION:A hard plug-in pin core 2 fitted into a soft core 1 so as to support the latter is fitted to an upper mold 4 by an adjusting bolt 6, the upper mold 4 and a lower mold 5 are closed, and a resin is injected from an injection port 7 and molded. With the molds separated from each other to draw out the soft core 1 and the molded resin body 3 integrally, the soft core 1 freely deforms to separate from the molded resin body 3, providing the molded resin body 3 of the desired shape.
JP4319979A 1979-04-10 1979-04-10 Mold method characterized by insertion of drawable soft core during injection molding of resin Pending JPS55135636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4319979A JPS55135636A (en) 1979-04-10 1979-04-10 Mold method characterized by insertion of drawable soft core during injection molding of resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4319979A JPS55135636A (en) 1979-04-10 1979-04-10 Mold method characterized by insertion of drawable soft core during injection molding of resin

Publications (1)

Publication Number Publication Date
JPS55135636A true JPS55135636A (en) 1980-10-22

Family

ID=12657251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4319979A Pending JPS55135636A (en) 1979-04-10 1979-04-10 Mold method characterized by insertion of drawable soft core during injection molding of resin

Country Status (1)

Country Link
JP (1) JPS55135636A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606415A (en) * 1983-06-24 1985-01-14 Showa Gomme Kk Mold apparatus for producing item with constricted section such as teat and the like
JPH0199814A (en) * 1987-10-12 1989-04-18 Tomiho:Kk Molding method for synthetic resin member with undercut
EP3892435A1 (en) * 2020-04-07 2021-10-13 Rohr, Inc. Hybrid mandrel for use in tooling method and the manufacture of thrust reverse cascades and structures susceptible to trapped tooling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606415A (en) * 1983-06-24 1985-01-14 Showa Gomme Kk Mold apparatus for producing item with constricted section such as teat and the like
JPH033568B2 (en) * 1983-06-24 1991-01-18 Showa Rubber
JPH0199814A (en) * 1987-10-12 1989-04-18 Tomiho:Kk Molding method for synthetic resin member with undercut
EP3892435A1 (en) * 2020-04-07 2021-10-13 Rohr, Inc. Hybrid mandrel for use in tooling method and the manufacture of thrust reverse cascades and structures susceptible to trapped tooling

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