FR2177240A7 - Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use - Google Patents

Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use

Info

Publication number
FR2177240A7
FR2177240A7 FR7210590A FR7210590A FR2177240A7 FR 2177240 A7 FR2177240 A7 FR 2177240A7 FR 7210590 A FR7210590 A FR 7210590A FR 7210590 A FR7210590 A FR 7210590A FR 2177240 A7 FR2177240 A7 FR 2177240A7
Authority
FR
France
Prior art keywords
mandrel
withdrawal
releases
flexible
flexible body
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
FR7210590A
Other languages
French (fr)
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.)
Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
Original Assignee
Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
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 Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA filed Critical Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
Priority to FR7210590A priority Critical patent/FR2177240A7/en
Application granted granted Critical
Publication of FR2177240A7 publication Critical patent/FR2177240A7/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/82—Cores or mandrels
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Flexible mandrel for lay-up of bent tubing made of rubber etc., comprising a cylindrical body which can be locked in the required pattern and unlocked and removed after use. Pref. the locking device is a flexible longitudinal tie passing through the middle of the mandrel to tie the ends of the mandrel in compression. The cross section may vary. Pref. mandrel or segments thereof are made: of a material which is longitudinally flexible without significant permanent deformation. Suitable for mfg. long segments of tubing, e.g. L/D 40:1, without requiring external support except at the ends. One mandrel can be adapted to suit various prods.
FR7210590A 1972-03-24 1972-03-24 Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use Expired FR2177240A7 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7210590A FR2177240A7 (en) 1972-03-24 1972-03-24 Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210590A FR2177240A7 (en) 1972-03-24 1972-03-24 Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use

Publications (1)

Publication Number Publication Date
FR2177240A7 true FR2177240A7 (en) 1973-11-02

Family

ID=9095820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7210590A Expired FR2177240A7 (en) 1972-03-24 1972-03-24 Mandrel for bent tubing - comprising a flexible body with an integral tie which releases for withdrawal and re-use

Country Status (1)

Country Link
FR (1) FR2177240A7 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2328565A1 (en) * 1975-10-08 1977-05-20 Schmidt Karl PROCESS AND INSTALLATION FOR THE MANUFACTURING OF RUBBER PIPES OF CURVED SHAPE
DE3132031A1 (en) * 1981-08-06 1983-03-03 Dayco Corp., 45401 Dayton, Ohio CURVED CLAMPING SPINDLE FOR TREATMENT OR FOR THE CURING OF HOSES FROM POLYMERIZED MATERIAL, METHOD FOR FORMING A CLAMPING SPINDLE AND METHOD FOR HANDLING OR. FOR OPERATING SUCH A CLAMPING SPINDLE FOR TREATING THESE HOSES
FR2600009A1 (en) * 1986-06-11 1987-12-18 Volkswagen Ag Mandrel for manufacturing a hollow body
EP0384924A1 (en) * 1989-02-28 1990-09-05 Asahi Kasei Kogyo Kabushiki Kaisha A process for producing a resin product having a bent hollow portion and a core usable for the same process
FR2687949A1 (en) * 1992-03-02 1993-09-03 Caoutchouc Manuf Plastique Malleable mandrel for shaping flexible pipes (tubes) and hoses
NL1008273C2 (en) * 1998-02-11 1999-08-12 Wavin Bv Bending method for a pipe made from thermoplastic material, using a bending core with a flexible middle section inserted into the pipe
DE10229073C1 (en) * 2002-06-28 2003-12-18 Contitech Luftfedersyst Gmbh The assembly for the continuous production of reinforced tubular blanks has coupled mandrels to be coated with the rubber/plastics and reinforcement layers, to be separated and stripped for vulcanizing free of the mandrels
DE10229082B3 (en) * 2002-06-28 2004-02-12 Contitech Luftfedersysteme Gmbh Method and device for producing strength-reinforced, tubular structures
DE102007031876A1 (en) * 2007-07-09 2009-01-15 Röchling Automotive AG & Co. KG Extrusion blowing device for producing hollow bodies, particularly plastic bottles, has material extrusion nozzle, which is formed for extruding hollow perform

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2328565A1 (en) * 1975-10-08 1977-05-20 Schmidt Karl PROCESS AND INSTALLATION FOR THE MANUFACTURING OF RUBBER PIPES OF CURVED SHAPE
DE3132031A1 (en) * 1981-08-06 1983-03-03 Dayco Corp., 45401 Dayton, Ohio CURVED CLAMPING SPINDLE FOR TREATMENT OR FOR THE CURING OF HOSES FROM POLYMERIZED MATERIAL, METHOD FOR FORMING A CLAMPING SPINDLE AND METHOD FOR HANDLING OR. FOR OPERATING SUCH A CLAMPING SPINDLE FOR TREATING THESE HOSES
FR2600009A1 (en) * 1986-06-11 1987-12-18 Volkswagen Ag Mandrel for manufacturing a hollow body
EP0384924A1 (en) * 1989-02-28 1990-09-05 Asahi Kasei Kogyo Kabushiki Kaisha A process for producing a resin product having a bent hollow portion and a core usable for the same process
FR2687949A1 (en) * 1992-03-02 1993-09-03 Caoutchouc Manuf Plastique Malleable mandrel for shaping flexible pipes (tubes) and hoses
EP0640463A1 (en) * 1992-03-02 1995-03-01 Caoutchouc Manufacture Et Plastiques Malleable mandrel for shaping flexible tubes or hoses
NL1008273C2 (en) * 1998-02-11 1999-08-12 Wavin Bv Bending method for a pipe made from thermoplastic material, using a bending core with a flexible middle section inserted into the pipe
DE10229073C1 (en) * 2002-06-28 2003-12-18 Contitech Luftfedersyst Gmbh The assembly for the continuous production of reinforced tubular blanks has coupled mandrels to be coated with the rubber/plastics and reinforcement layers, to be separated and stripped for vulcanizing free of the mandrels
DE10229082B3 (en) * 2002-06-28 2004-02-12 Contitech Luftfedersysteme Gmbh Method and device for producing strength-reinforced, tubular structures
DE102007031876A1 (en) * 2007-07-09 2009-01-15 Röchling Automotive AG & Co. KG Extrusion blowing device for producing hollow bodies, particularly plastic bottles, has material extrusion nozzle, which is formed for extruding hollow perform

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