JPS55113518A - Forming plastic pipe socket - Google Patents

Forming plastic pipe socket

Info

Publication number
JPS55113518A
JPS55113518A JP2222279A JP2222279A JPS55113518A JP S55113518 A JPS55113518 A JP S55113518A JP 2222279 A JP2222279 A JP 2222279A JP 2222279 A JP2222279 A JP 2222279A JP S55113518 A JPS55113518 A JP S55113518A
Authority
JP
Japan
Prior art keywords
socket
pipe
end portion
expanded
plastic pipe
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
JP2222279A
Other languages
Japanese (ja)
Other versions
JPS6235900B2 (en
Inventor
Junsuke Kyomen
Masayuki Sakaguchi
Toshio Nakamoto
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 JP2222279A priority Critical patent/JPS55113518A/en
Publication of JPS55113518A publication Critical patent/JPS55113518A/en
Publication of JPS6235900B2 publication Critical patent/JPS6235900B2/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
    • 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
    • B29C57/045—Belling or enlarging, e.g. combined with forming a groove using mechanical means rotating
    • 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
    • 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
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0003—Moulding articles between moving mould surfaces, e.g. turning surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To increase circumferential tensile strength of a plastic pipe socket and reduce the amount of preparatory wall thickening at pipe end portion by a method wherein the outside surface of an expanded end portion of a plastic pipe is treated by a roll moved in the circumferential direction. CONSTITUTION:A plastic pipe end portion E is heated, and then expanded to be a socket by a method wherein the heated portion is fitted over a socket-forming core A, blow method, or similar method. A roll C is contacted with the outside surface of the expanded portion, and moved in the circumferential direction of the portion. By this movement of the roll C, the plastic in the expanded portion is drawn in the circumferential direction and formed into the final socket shape. Because the circumferential tensile strength of the socket is increased by the drawing treatment, the hoop stress of the socket with respect to the water pressure inside the pipe due to the increase of socket diameter can sufficiently be coped with, even when the wall thickness of the socket is roughly equal to that of the pipe. Thus, the amount of preparatory wall thickening at the pipe end portion can be reduced.
JP2222279A 1979-02-26 1979-02-26 Forming plastic pipe socket Granted JPS55113518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2222279A JPS55113518A (en) 1979-02-26 1979-02-26 Forming plastic pipe socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2222279A JPS55113518A (en) 1979-02-26 1979-02-26 Forming plastic pipe socket

Publications (2)

Publication Number Publication Date
JPS55113518A true JPS55113518A (en) 1980-09-02
JPS6235900B2 JPS6235900B2 (en) 1987-08-04

Family

ID=12076764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2222279A Granted JPS55113518A (en) 1979-02-26 1979-02-26 Forming plastic pipe socket

Country Status (1)

Country Link
JP (1) JPS55113518A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136076A (en) * 1975-04-19 1976-11-25 Dual Gebrueder Steidinger Driving device having belt and joggled belt pully
JPS5289177A (en) * 1976-01-21 1977-07-26 Hitachi Ltd Method of grooving inner surface of pipe material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51136076A (en) * 1975-04-19 1976-11-25 Dual Gebrueder Steidinger Driving device having belt and joggled belt pully
JPS5289177A (en) * 1976-01-21 1977-07-26 Hitachi Ltd Method of grooving inner surface of pipe material

Also Published As

Publication number Publication date
JPS6235900B2 (en) 1987-08-04

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