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-useInfo
- 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
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.
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)
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 |
-
1972
- 1972-03-24 FR FR7210590A patent/FR2177240A7/en not_active Expired
Cited By (10)
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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