FR2413960A1 - Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket - Google Patents

Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket

Info

Publication number
FR2413960A1
FR2413960A1 FR7800760A FR7800760A FR2413960A1 FR 2413960 A1 FR2413960 A1 FR 2413960A1 FR 7800760 A FR7800760 A FR 7800760A FR 7800760 A FR7800760 A FR 7800760A FR 2413960 A1 FR2413960 A1 FR 2413960A1
Authority
FR
France
Prior art keywords
socket
pipe
mandrel
rib
sleeve
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
FR7800760A
Other languages
French (fr)
Other versions
FR2413960B1 (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 FR7800760A priority Critical patent/FR2413960A1/en
Publication of FR2413960A1 publication Critical patent/FR2413960A1/en
Application granted granted Critical
Publication of FR2413960B1 publication Critical patent/FR2413960B1/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A socket with an internal annular recess is formed on the end of a thermoplastic pipe by clamping the pipe in a split hollow sleeve having a wide mouth with a bevelled edge, then inserting a hot mandrel with an annular rib and a bevelled tip to press the pipe wall against the sleeve mouth, and then enclosing the mandrel rib with an ancillary hollow annular sleeve with an extended mouth. Fluid pressure is then applied within both hollow sleeves to conform the pipe to the mandrel profile. After cooling, the sleeves are disengaged and the mandrel is withdrawn after collapsing the segments defining the rib. Used for mfr. of sockets on the ends of straight or curved pipe or fittings to obtain close dimensional tolerances (e.g. plus-or-minus 3 mm) on the socket wall profiles and thickness, even if the pipe wall thickness originally has a greater variation (e.g. plus-or-minus 1 mm). The progressive forming and consolidation of the socket profile tends to concentrate extra material into the large dia. channel wall if necessary.
FR7800760A 1978-01-10 1978-01-10 Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket Granted FR2413960A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7800760A FR2413960A1 (en) 1978-01-10 1978-01-10 Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7800760A FR2413960A1 (en) 1978-01-10 1978-01-10 Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket

Publications (2)

Publication Number Publication Date
FR2413960A1 true FR2413960A1 (en) 1979-08-03
FR2413960B1 FR2413960B1 (en) 1980-05-16

Family

ID=9203359

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800760A Granted FR2413960A1 (en) 1978-01-10 1978-01-10 Forming socket ends of thermoplastic pipes - by progressive mechanical and hydrostatic means to obtain close dimensional tolerances on the socket

Country Status (1)

Country Link
FR (1) FR2413960A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2144424A5 (en) * 1971-07-01 1973-02-09 Forsheda Ideutveckling Ab
US3749543A (en) * 1971-06-21 1973-07-31 Asc Ind Inc Apparatus for forming belled pipe couplings
FR2224272A1 (en) * 1973-04-05 1974-10-31 Polva Nederland Bv
NL7407585A (en) * 1974-06-06 1975-12-09 Polva Nederland Bv Forming accurately dimensioned tubular thermoplastics couplings - using double plunger machine which simultaneously forms sockets at both ends

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749543A (en) * 1971-06-21 1973-07-31 Asc Ind Inc Apparatus for forming belled pipe couplings
FR2144424A5 (en) * 1971-07-01 1973-02-09 Forsheda Ideutveckling Ab
FR2224272A1 (en) * 1973-04-05 1974-10-31 Polva Nederland Bv
NL7407585A (en) * 1974-06-06 1975-12-09 Polva Nederland Bv Forming accurately dimensioned tubular thermoplastics couplings - using double plunger machine which simultaneously forms sockets at both ends

Also Published As

Publication number Publication date
FR2413960B1 (en) 1980-05-16

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Legal Events

Date Code Title Description
ST Notification of lapse