GB1431714A - Mandrels for use in the forming of hollow articles - Google Patents

Mandrels for use in the forming of hollow articles

Info

Publication number
GB1431714A
GB1431714A GB3209973A GB3209973A GB1431714A GB 1431714 A GB1431714 A GB 1431714A GB 3209973 A GB3209973 A GB 3209973A GB 3209973 A GB3209973 A GB 3209973A GB 1431714 A GB1431714 A GB 1431714A
Authority
GB
United Kingdom
Prior art keywords
segments
mandrel
projected
parts
rotated
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
GB3209973A
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.)
Hepworth Plastics Ltd
Original Assignee
Hepworth Plastics 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 Hepworth Plastics Ltd filed Critical Hepworth Plastics Ltd
Priority to GB3209973A priority Critical patent/GB1431714A/en
Publication of GB1431714A publication Critical patent/GB1431714A/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
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means
    • B29C57/06—Belling or enlarging, e.g. combined with forming a groove using mechanical means elastically deformable
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

1431714 Grooving pipes HEPWORTH PLASTICS Ltd 5 July 1973 32099/73 Heading B5A The end 23 (Fig. 1) of a heated thermoplastics pipe 22 is enlarged and provided with a groove 24, by a mandrel comprising body parts 1A, 1B and a plurality of segments 4 that can be projected from, or withdrawn within, the outer surface of the parts 1A, 1B. Links 8 pivoted one to each segment 4 and to an axial member 7 (see Fig. 2) project or withdraw the segments when the member 7 is rotated. The segments 4, which are interconnected by tongues and grooves 18, 19, are guided for radial movement by keys 5 fitting keyways 6, and are encircled by an elastomeric band 20. Member 7 is rotated by a manually-, hydraulically-, or pneumatically-operated handle 13 which is movable between stops 16 and 17 (or link movement is limited by the edges of slots 12 in a tubular support 11). Water pipes 35, 36 carry cooling water to cavities 25, 26. The mandrel is supported by a plate 14 and is positioned between mould parts 27. The pipe is pushed over the mandrel before or after the segments 4 are projected.
GB3209973A 1973-07-05 1973-07-05 Mandrels for use in the forming of hollow articles Expired GB1431714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3209973A GB1431714A (en) 1973-07-05 1973-07-05 Mandrels for use in the forming of hollow articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3209973A GB1431714A (en) 1973-07-05 1973-07-05 Mandrels for use in the forming of hollow articles

Publications (1)

Publication Number Publication Date
GB1431714A true GB1431714A (en) 1976-04-14

Family

ID=10333212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3209973A Expired GB1431714A (en) 1973-07-05 1973-07-05 Mandrels for use in the forming of hollow articles

Country Status (1)

Country Link
GB (1) GB1431714A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522579A1 (en) * 1982-03-03 1983-09-09 Prod Avicoles Lillois Mould tool for dishes with deep undercut lip - for strong one piece dishes for industrial chicken feeders
GB2214859A (en) * 1988-02-19 1989-09-13 British Gas Plc Pipe expanding device
AT511230A1 (en) * 2011-04-15 2012-10-15 Ifw Manfred Otte Gmbh FORM CORE FOR MOLDING TOOL
ITRA20130018A1 (en) * 2013-07-10 2013-10-09 Ipm Srl COOLING SYSTEM IN THE FORMATION OF THE INTERNAL SURFACE OF THE EXTERNAL SLEEVE OF A GLASS JOINT OBTAINED BY HARD PLASTIC DEFORMATION AT THE END OF A PLASTIC TUBE.
EP2793011A1 (en) * 2013-04-05 2014-10-22 Ipm S.R.L. Testing system for the operation of the tightness seal and bell of a pvc-type plastic material pipe, obtained by a forming process with integrated seal

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522579A1 (en) * 1982-03-03 1983-09-09 Prod Avicoles Lillois Mould tool for dishes with deep undercut lip - for strong one piece dishes for industrial chicken feeders
GB2214859A (en) * 1988-02-19 1989-09-13 British Gas Plc Pipe expanding device
GB2214859B (en) * 1988-02-19 1991-11-20 British Gas Plc Pipe expanding device
AT511230A1 (en) * 2011-04-15 2012-10-15 Ifw Manfred Otte Gmbh FORM CORE FOR MOLDING TOOL
WO2012139771A2 (en) 2011-04-15 2012-10-18 Ifw Manfred Otte Gmbh Moulding core for moulding tool
EP2793011A1 (en) * 2013-04-05 2014-10-22 Ipm S.R.L. Testing system for the operation of the tightness seal and bell of a pvc-type plastic material pipe, obtained by a forming process with integrated seal
ITRA20130018A1 (en) * 2013-07-10 2013-10-09 Ipm Srl COOLING SYSTEM IN THE FORMATION OF THE INTERNAL SURFACE OF THE EXTERNAL SLEEVE OF A GLASS JOINT OBTAINED BY HARD PLASTIC DEFORMATION AT THE END OF A PLASTIC TUBE.

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Legal Events

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