FR2375973A2 - Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion - Google Patents

Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion

Info

Publication number
FR2375973A2
FR2375973A2 FR7639816A FR7639816A FR2375973A2 FR 2375973 A2 FR2375973 A2 FR 2375973A2 FR 7639816 A FR7639816 A FR 7639816A FR 7639816 A FR7639816 A FR 7639816A FR 2375973 A2 FR2375973 A2 FR 2375973A2
Authority
FR
France
Prior art keywords
socket
mandrel
mandrels
ease
thermoplastic pipes
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
FR7639816A
Other languages
French (fr)
Other versions
FR2375973B2 (en
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.)
MEGIAS ETS JOSEPH
Original Assignee
MEGIAS ETS JOSEPH
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 MEGIAS ETS JOSEPH filed Critical MEGIAS ETS JOSEPH
Priority to FR7639816A priority Critical patent/FR2375973A2/en
Publication of FR2375973A2 publication Critical patent/FR2375973A2/en
Application granted granted Critical
Publication of FR2375973B2 publication Critical patent/FR2375973B2/fr
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
    • B29C57/08—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
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/083—Bending or folding of tubes or other profiled members bending longitudinally, i.e. modifying the curvature of the tube axis
    • 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
    • B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/02—Thermal shrinking
    • B29C61/025—Thermal shrinking for the production of hollow or tubular articles
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0027—Cutting off
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/079—Auxiliary parts or inserts
    • B29C2949/08—Preforms made of several individual parts, e.g. by welding or gluing parts together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/258—Tubular
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • 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
    • 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
    • B29L2031/243—Elbows

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The Parent Patent described formation in thermoplastic pipes of sockets with an internal annular channel by forcing into the preheated pipe end a suitably shaped mandrel with an annular collar which could be dismantled for subsequent removal. In this addn. preliminary shaping of the socket mouth is effected using an evacuated mould to enlarge a portion of the pipe and a temporary tubular sleeve to support the socket while the mandrel and collar are positioned coaxially within the socket. The sleeve is then withdrawn to allow the preheated oversize socket to contract to fit the mandrel. The mandrel is dismantled and withdrawn after the socket has been cooled sufficiently to retain its shape. Used esp. for putting socket mouths for use with annular seals on the ends of pipes of e.g. rigid PVC. Deformation of the pipe wall is uniform and free from longitudinal shear associated with force fitting of a core mandrel.
FR7639816A 1976-12-30 1976-12-30 Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion Granted FR2375973A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7639816A FR2375973A2 (en) 1976-12-30 1976-12-30 Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7639816A FR2375973A2 (en) 1976-12-30 1976-12-30 Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion

Publications (2)

Publication Number Publication Date
FR2375973A2 true FR2375973A2 (en) 1978-07-28
FR2375973B2 FR2375973B2 (en) 1980-04-04

Family

ID=9181858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7639816A Granted FR2375973A2 (en) 1976-12-30 1976-12-30 Mandrels for forming grooved socket ends in thermoplastic pipes - using temporary support of an oversized socket to ease mandrel insertion

Country Status (1)

Country Link
FR (1) FR2375973A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042279A1 (en) * 1998-02-19 1999-08-26 Wavin B.V. Method and device for forming a socket on a pipe of thermoplastic material
EP0963833A1 (en) * 1998-06-11 1999-12-15 S.I.C.A. SERRANDE INFISSI CARPENTERIA ATTREZZATURA S.p.A. Tool with multiple operative phases, to form satble bell mouths in terminal junction sections of pipes made of thermoplastic material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999042279A1 (en) * 1998-02-19 1999-08-26 Wavin B.V. Method and device for forming a socket on a pipe of thermoplastic material
US6540955B1 (en) 1998-02-19 2003-04-01 Wavin B.V. Process of making a socket on a pipe of thermoplastic material
EP0963833A1 (en) * 1998-06-11 1999-12-15 S.I.C.A. SERRANDE INFISSI CARPENTERIA ATTREZZATURA S.p.A. Tool with multiple operative phases, to form satble bell mouths in terminal junction sections of pipes made of thermoplastic material

Also Published As

Publication number Publication date
FR2375973B2 (en) 1980-04-04

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