GB1326932A - Method and apparatus for manufacturing pipe ends provided with an extreme end having an enlarged thickness of wall - Google Patents

Method and apparatus for manufacturing pipe ends provided with an extreme end having an enlarged thickness of wall

Info

Publication number
GB1326932A
GB1326932A GB4226970A GB4226970A GB1326932A GB 1326932 A GB1326932 A GB 1326932A GB 4226970 A GB4226970 A GB 4226970A GB 4226970 A GB4226970 A GB 4226970A GB 1326932 A GB1326932 A GB 1326932A
Authority
GB
United Kingdom
Prior art keywords
mandrel
pipe
wall
groove
widened
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.)
Expired
Application number
GB4226970A
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.)
Industriele Onderneming Wavin NV
Wavin BV
Original Assignee
Industriele Onderneming Wavin NV
Wavin BV
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 Industriele Onderneming Wavin NV, Wavin BV filed Critical Industriele Onderneming Wavin NV
Publication of GB1326932A publication Critical patent/GB1326932A/en
Expired 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

Abstract

1326932 Moulding pipe grooves INDUSTRIELE ONDERNEMING WAVIN NV 3 Sept 1970 [4 Sept 1969] 42269/70 Heading B5A [Also in Division F2] The widened end of a polyvinyl chloride pipe 5 for joining to an unwidened pipe end, for the conveyance of a pressurized medium, is provided with an internal groove and a thickened wall. The pipe end may be widened prior to the formation of the groove, but in the described embodiment the groove and widened end are simultaneously formed when the pipe 5 is plasticized by heating to 100, or 120 to 180‹ C., e.g. 140‹ C., and slid on to a mandrel 3 within the cavity 16 of a split die 1a, 1b, heated to 30 to 70‹ C., e.g. 55‹ C. and provided with vents 15, within which the pipe end is thickened upon displacement thereof against the cavity wall, by axial movement of a member 7 and/or a ring 4 which grips the pipe 5 against the mandrel 3 under the action of an hydraulic pressing ring 6. The mandrel 3, may comprise loose mandrel segments around a mandrel core, and an annular mandrel member 12 which may be rotatably mounted or may comprise inflatable rubber ring, or elements expansible by a conical core.
GB4226970A 1969-09-04 1970-09-03 Method and apparatus for manufacturing pipe ends provided with an extreme end having an enlarged thickness of wall Expired GB1326932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6913489 1969-09-04

Publications (1)

Publication Number Publication Date
GB1326932A true GB1326932A (en) 1973-08-15

Family

ID=19807830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4226970A Expired GB1326932A (en) 1969-09-04 1970-09-03 Method and apparatus for manufacturing pipe ends provided with an extreme end having an enlarged thickness of wall

Country Status (1)

Country Link
GB (1) GB1326932A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2401010A1 (en) * 1977-08-22 1979-03-23 Johns Manville APPARATUS AND METHOD FOR FORMING A JUNCTION OF PLASTIC PIPES
FR2437924A1 (en) * 1978-10-03 1980-04-30 Kubota Ltd METHOD AND APPARATUS FOR MOLDING PLASTIC TUBE INTERLOCKING TULIP
GB2160144A (en) * 1984-06-04 1985-12-18 Paxit Pipekor Pty Ltd Shaping pipe ends
WO1989000492A1 (en) * 1987-07-16 1989-01-26 Giuseppe Tassinari A method of forming stable sockets in polyethylene pipes, with or without reinforcement
EP0694726A1 (en) * 1994-07-19 1996-01-31 Ameron, Inc. High strength pipe joint with pressed key groove
DE19601993A1 (en) * 1995-04-28 1996-10-31 Tecalemit Gmbh Deutsche Heat deforming of local areas for prodn. of extruded thermoplastic and plastic tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2401010A1 (en) * 1977-08-22 1979-03-23 Johns Manville APPARATUS AND METHOD FOR FORMING A JUNCTION OF PLASTIC PIPES
FR2437924A1 (en) * 1978-10-03 1980-04-30 Kubota Ltd METHOD AND APPARATUS FOR MOLDING PLASTIC TUBE INTERLOCKING TULIP
GB2160144A (en) * 1984-06-04 1985-12-18 Paxit Pipekor Pty Ltd Shaping pipe ends
WO1989000492A1 (en) * 1987-07-16 1989-01-26 Giuseppe Tassinari A method of forming stable sockets in polyethylene pipes, with or without reinforcement
GR880100464A (en) * 1987-07-16 1989-03-08 Tassinari Ciuseppe A method of forming stable sockets in polyethylene pipes with or without reinforcement
EP0694726A1 (en) * 1994-07-19 1996-01-31 Ameron, Inc. High strength pipe joint with pressed key groove
DE19601993A1 (en) * 1995-04-28 1996-10-31 Tecalemit Gmbh Deutsche Heat deforming of local areas for prodn. of extruded thermoplastic and plastic tube

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees