JPS57137112A - Manufacture of plastic pipe joint - Google Patents

Manufacture of plastic pipe joint

Info

Publication number
JPS57137112A
JPS57137112A JP56023579A JP2357981A JPS57137112A JP S57137112 A JPS57137112 A JP S57137112A JP 56023579 A JP56023579 A JP 56023579A JP 2357981 A JP2357981 A JP 2357981A JP S57137112 A JPS57137112 A JP S57137112A
Authority
JP
Japan
Prior art keywords
mold
receiving port
temperature zone
piece
frontal portion
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
JP56023579A
Other languages
Japanese (ja)
Other versions
JPS6247702B2 (en
Inventor
Ryozo Oota
Ryuichi Yoneda
Hideki Kajiwara
Kenzo Nishitani
Hideyuki Kinoshita
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP56023579A priority Critical patent/JPS57137112A/en
Publication of JPS57137112A publication Critical patent/JPS57137112A/en
Publication of JPS6247702B2 publication Critical patent/JPS6247702B2/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
    • B29C45/26—Moulds
    • B29C45/261—Moulds having tubular mould cavities
    • B29C45/2612—Moulds having tubular mould cavities for manufacturing tubular articles with an annular groove
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • B29C37/0014—Discharging moulded articles from the mould by flexibly or permanently deforming undercut portions of the articles
    • 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
    • B29L2031/24—Pipe joints or couplings

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To effectively cool the frontal portion of receiving port when molds are removed by using a system in which the high-temperature zone of an outer mold is made up of a hot mold piece and also the low-temperature zone is made up of a cold metal piece so that the inside diameter of the frontal portion of the receiving port is made smaller than that of the rear portion of the port. CONSTITUTION:For molds through which a plastic pipe joint having a receiving port with a groove A to be fitted with a rubber ring is molded by injection, the inside diameter R1 of the frontal portion B of the receiving port is made smaller than that R2 of the rear portion C of the port, and also the high-temperature zone of the outer mold 1 is made up of a hot mold piece 11 and the low-temperature zone is made up of a cold mold piece 12. And, when the core mold 2 is removed and moved, the frontal portion B of the receiving port is opened up forcibly by the low-temperature zone 22 of the core mold, the hot mold piece 11 of the outer mold is cooled to a given temperature after slipping out, and immediately after slipping out and moving the core mold 2, the frontal portion B of the receiving port is adjusted and molded, together with the groove to be fitted with the rubber ring, by the mold piece 11.
JP56023579A 1981-02-18 1981-02-18 Manufacture of plastic pipe joint Granted JPS57137112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023579A JPS57137112A (en) 1981-02-18 1981-02-18 Manufacture of plastic pipe joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023579A JPS57137112A (en) 1981-02-18 1981-02-18 Manufacture of plastic pipe joint

Publications (2)

Publication Number Publication Date
JPS57137112A true JPS57137112A (en) 1982-08-24
JPS6247702B2 JPS6247702B2 (en) 1987-10-09

Family

ID=12114464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023579A Granted JPS57137112A (en) 1981-02-18 1981-02-18 Manufacture of plastic pipe joint

Country Status (1)

Country Link
JP (1) JPS57137112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598961A1 (en) * 1986-05-26 1987-11-27 Fip Formatura Inienzione Poli DEVICE FOR FORMING THERMOPLASTIC PRODUCTS HAVING RETAILERS
JP2019171885A (en) * 2015-01-30 2019-10-10 株式会社オンダ製作所 Method of manufacturing pipe joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598961A1 (en) * 1986-05-26 1987-11-27 Fip Formatura Inienzione Poli DEVICE FOR FORMING THERMOPLASTIC PRODUCTS HAVING RETAILERS
JP2019171885A (en) * 2015-01-30 2019-10-10 株式会社オンダ製作所 Method of manufacturing pipe joint

Also Published As

Publication number Publication date
JPS6247702B2 (en) 1987-10-09

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