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JPS57197122A - Pipe end working method of plastic pipe - Google Patents

Pipe end working method of plastic pipe

Info

Publication number
JPS57197122A
JPS57197122A JP8305381A JP8305381A JPS57197122A JP S57197122 A JPS57197122 A JP S57197122A JP 8305381 A JP8305381 A JP 8305381A JP 8305381 A JP8305381 A JP 8305381A JP S57197122 A JPS57197122 A JP S57197122A
Authority
JP
Japan
Prior art keywords
mold
diameter
pipe
outside
pipe end
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
JP8305381A
Other languages
Japanese (ja)
Other versions
JPH0232976B2 (en
Inventor
Goro Hattori
Katsuichi Suzuki
Kimio Noda
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical 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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP8305381A priority Critical patent/JPH0232976B2/en
Publication of JPS57197122A publication Critical patent/JPS57197122A/en
Publication of JPH0232976B2 publication Critical patent/JPH0232976B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/08—Belling or enlarging, e.g. combined with forming a groove using pressure difference
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum

Landscapes

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

Abstract

PURPOSE:To obtain the socket part of a desired shape, even though the heating temperature of a pipe end is low, by fitting the pipe end to a first mold of which the diameter is expanded, then once contracting its diameter, contacting the pipe end to the outside of a second mold, blocking it with the second mold, expanding the diameter of the first mold and evacuating to a vacuum. CONSTITUTION:The diameter of the rising part 1a of a first mold 1 is expanded, the pipe end of a preheated plastic pipe P is fitted to the mold 1 via a guide 3, the outside diameter of the rising part 1a is contracted until it becomes as same as the outside diameter of a second mold 2 and the pipe P is further sent to the mold 2 side. When a predetermined length of a pipe end part P'a is fitted to an outside of the mold 2, the diameter of the mold 1 is again expanded. All the while, the state in which the end part P'a is blocked with the mold 2 is kept. When a second diameter expansion is finished, a vacuum sucking is done. Because the end part P'a is blocked, a vacuum sucking force is exerted on the part between the rising part 1a and the mold 2, the pipe P is contacted to an entire outside periphery of the mold 1 in the state in which the end part P'a is contacted to the outside of the mold 2, thus a socket part Pa is formed. After the socket part Pa is water-cooled and solidified, the diameter of the mold 1 is contracted and the socket part Pa is taken off from the mold.
JP8305381A 1981-05-29 1981-05-29 PURASUCHITSUKUKANNOKANTANKAKOHOHO Expired - Lifetime JPH0232976B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8305381A JPH0232976B2 (en) 1981-05-29 1981-05-29 PURASUCHITSUKUKANNOKANTANKAKOHOHO

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8305381A JPH0232976B2 (en) 1981-05-29 1981-05-29 PURASUCHITSUKUKANNOKANTANKAKOHOHO

Publications (2)

Publication Number Publication Date
JPS57197122A true JPS57197122A (en) 1982-12-03
JPH0232976B2 JPH0232976B2 (en) 1990-07-24

Family

ID=13791445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8305381A Expired - Lifetime JPH0232976B2 (en) 1981-05-29 1981-05-29 PURASUCHITSUKUKANNOKANTANKAKOHOHO

Country Status (1)

Country Link
JP (1) JPH0232976B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031948A (en) * 1983-07-29 1985-02-18 Sekisui Chem Co Ltd Molding equipment for diameter-widened port section of synthetic-resin tube body
JPS61291122A (en) * 1985-06-19 1986-12-20 Mitsubishi Plastics Ind Ltd Socket mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031948A (en) * 1983-07-29 1985-02-18 Sekisui Chem Co Ltd Molding equipment for diameter-widened port section of synthetic-resin tube body
JPS61291122A (en) * 1985-06-19 1986-12-20 Mitsubishi Plastics Ind Ltd Socket mold

Also Published As

Publication number Publication date
JPH0232976B2 (en) 1990-07-24

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