JPS6478812A - Molding device for bellows type molded form - Google Patents

Molding device for bellows type molded form

Info

Publication number
JPS6478812A
JPS6478812A JP62234995A JP23499587A JPS6478812A JP S6478812 A JPS6478812 A JP S6478812A JP 62234995 A JP62234995 A JP 62234995A JP 23499587 A JP23499587 A JP 23499587A JP S6478812 A JPS6478812 A JP S6478812A
Authority
JP
Japan
Prior art keywords
core
molded form
molded
tip end
molds
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
JP62234995A
Other languages
Japanese (ja)
Inventor
Shoji Yamamori
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.)
Mitsubishi Kasei Polytec Co
Original Assignee
Mitsubishi Monsanto Chemical Co
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 Mitsubishi Monsanto Chemical Co filed Critical Mitsubishi Monsanto Chemical Co
Priority to JP62234995A priority Critical patent/JPS6478812A/en
Publication of JPS6478812A publication Critical patent/JPS6478812A/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
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7337—Heating or cooling of the mould using gas or steam
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • B29C45/43—Removing or ejecting moulded articles using fluid under pressure
    • B29C45/435—Removing or ejecting moulded articles using fluid under pressure introduced between a mould core and a hollow resilient undercut article, e.g. bellows
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/703—Bellows

Landscapes

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

Abstract

PURPOSE:To permit cooling of a core and facilitate the mold releasing of a molded form, by a method wherein a part, pinched between a pair of split cavity blocks, and another part, serving the function of a core for an opening at one end of a molded form, are formed at the tip end section of a slide core pin while an air passage, communicating a compressed air source with the outside of the tip end of the core, is provided in at least one of the slide core pin and the core. CONSTITUTION:The inner surfaces of a large diametral side opening 3 and a bellows 4 among the openings at both ends of a molded form 1 are molded by a core 11, however, the inner surface of a small diametral side opening 2 is molded by the tip end section 35a of a slide core pin 35. An injection molding machine is operated and molds are closed interposing the core 11 between the molds while positioning a movable side split cavity block 10B through the guidance of a guide pin 23 and a guide bush 24, then, molten resin is injected to supply it into a molded form gate 18 from the nozzle of the injection molding machine through a sprue bush 15, a hot runner block 16 and a hot runner tip 17 and mold the molded form. The molds are opened after finishing the molding. In this case, compressed air passes through the air passage 34 and is injected outwardly from the tip end of the core 11 whereby the core 11 is cooled and the excessive temperature rise of the core 11 may be prevented.
JP62234995A 1987-09-21 1987-09-21 Molding device for bellows type molded form Pending JPS6478812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62234995A JPS6478812A (en) 1987-09-21 1987-09-21 Molding device for bellows type molded form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62234995A JPS6478812A (en) 1987-09-21 1987-09-21 Molding device for bellows type molded form

Publications (1)

Publication Number Publication Date
JPS6478812A true JPS6478812A (en) 1989-03-24

Family

ID=16979499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62234995A Pending JPS6478812A (en) 1987-09-21 1987-09-21 Molding device for bellows type molded form

Country Status (1)

Country Link
JP (1) JPS6478812A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997018076A1 (en) * 1995-11-13 1997-05-22 The Procter & Gamble Company Method for stripping open ended bellows part from injection mold
WO2003099537A1 (en) * 2002-05-27 2003-12-04 Pecoso, S.L. Mould for the production of elastic bellows for fluid dosing valves, production method thereof and bellows thus produced
JP2004155142A (en) * 2002-11-08 2004-06-03 Yamashita Rubber Kogyo:Kk Method for producing cylindrical rubber product having bellows part and device for producing cylindrical rubber product for the method
CN102729419A (en) * 2011-04-07 2012-10-17 江阴市农业药械厂 Air ejection device for bellows
CN104827610A (en) * 2015-05-20 2015-08-12 书元机械企业(昆山)有限公司 Automatic de-molding production device of corrugated pipe dustproof sleeve
CN107415159A (en) * 2017-05-09 2017-12-01 台州职业技术学院 A kind of plastic mould
CN109016372A (en) * 2018-08-22 2018-12-18 邹小可 A kind of Pipe injection mould

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997018076A1 (en) * 1995-11-13 1997-05-22 The Procter & Gamble Company Method for stripping open ended bellows part from injection mold
WO2003099537A1 (en) * 2002-05-27 2003-12-04 Pecoso, S.L. Mould for the production of elastic bellows for fluid dosing valves, production method thereof and bellows thus produced
ES2223226A1 (en) * 2002-05-27 2005-02-16 Pecoso, S.L. Mould for the production of elastic bellows for fluid dosing valves, production method thereof and bellows thus produced
JP2004155142A (en) * 2002-11-08 2004-06-03 Yamashita Rubber Kogyo:Kk Method for producing cylindrical rubber product having bellows part and device for producing cylindrical rubber product for the method
CN102729419A (en) * 2011-04-07 2012-10-17 江阴市农业药械厂 Air ejection device for bellows
CN104827610A (en) * 2015-05-20 2015-08-12 书元机械企业(昆山)有限公司 Automatic de-molding production device of corrugated pipe dustproof sleeve
CN107415159A (en) * 2017-05-09 2017-12-01 台州职业技术学院 A kind of plastic mould
CN107415159B (en) * 2017-05-09 2019-08-16 台州职业技术学院 A kind of plastic mould
CN109016372A (en) * 2018-08-22 2018-12-18 邹小可 A kind of Pipe injection mould
CN109016372B (en) * 2018-08-22 2021-06-15 深圳市铭优阳科技有限公司 Pipe injection mold

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