GB1324886A - Method and apparatus for forming a groove in a tube and tube having a groove formed therein - Google Patents

Method and apparatus for forming a groove in a tube and tube having a groove formed therein

Info

Publication number
GB1324886A
GB1324886A GB5252770A GB1324886DA GB1324886A GB 1324886 A GB1324886 A GB 1324886A GB 5252770 A GB5252770 A GB 5252770A GB 1324886D A GB1324886D A GB 1324886DA GB 1324886 A GB1324886 A GB 1324886A
Authority
GB
United Kingdom
Prior art keywords
tube
mandrel
groove
recess
dies
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
GB5252770A
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 GB1324886A publication Critical patent/GB1324886A/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
    • B29C57/08—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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • 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)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

1324886 Moulding grooves in tubes INDUSTRIELE ONDERNEMING WAVIN NV 4 Nov 1970 52527/70 Heading B5A In a method for forming an interior circumferential groove in a thermoplastics tube 1, the tube is first positioned over a mandrel 4 which co-operates with a split mould formed by dies 3, having a circumferential recess 11, and is thereafter heated both by means of a heating device incorporated in the dies and by a heating medium passed through a cavity 6 in the mandrel; the heated tube is then expanded into the recess 11 by means of a liquid pressing medium introduced from an hydraulic system 16 through outlets 13 around the circumference of the mandrel. Sealing rings 9, 10 are provided which assist in delimiting the area of formation of the groove. The tube, which is provided with a reinforcing sleeve 2, may be of polyethylene, polypropylene or polyvinylchloride, and the pressing medium may be oil or water. In an alternative embodiment, Fig. 3 (not shown), the recess 11 may be provided with a heat resistant resilient lining 17.
GB5252770A 1970-11-04 1970-11-04 Method and apparatus for forming a groove in a tube and tube having a groove formed therein Expired GB1324886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5252770 1970-11-04

Publications (1)

Publication Number Publication Date
GB1324886A true GB1324886A (en) 1973-07-25

Family

ID=10464257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5252770A Expired GB1324886A (en) 1970-11-04 1970-11-04 Method and apparatus for forming a groove in a tube and tube having a groove formed therein

Country Status (1)

Country Link
GB (1) GB1324886A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405121A1 (en) * 1976-09-23 1979-05-04 Yorkshire Imperial Plastics Radial lamination of coaxial thermoplastic tubes - to make composite oriented pipe, to stiffen sockets or provide thermal insulation
EP1792704A1 (en) * 2005-12-02 2007-06-06 Sica S.P.A. Method for socket-forming an end of a thermoplastic material tube, in particular of a polyolefinic material, tube for pressurised fluids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405121A1 (en) * 1976-09-23 1979-05-04 Yorkshire Imperial Plastics Radial lamination of coaxial thermoplastic tubes - to make composite oriented pipe, to stiffen sockets or provide thermal insulation
EP1792704A1 (en) * 2005-12-02 2007-06-06 Sica S.P.A. Method for socket-forming an end of a thermoplastic material tube, in particular of a polyolefinic material, tube for pressurised fluids
WO2007063122A1 (en) * 2005-12-02 2007-06-07 Sica S.P.A. Method for socket-forming an end of a thermoplastic material tube, in particular of a polyolefinic material, tube for pressurised fluids
US8211347B2 (en) 2005-12-02 2012-07-03 Sica S.P.A. Method for socket-forming an end of a thermoplastic material tube, in particular of a polyolefinic material, tube for pressurized fluids

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees
732 Registration of transactions, instruments or events in the register (sect. 32/1977)