JPS57197123A - Bending method of thermoplastic resin made tube - Google Patents

Bending method of thermoplastic resin made tube

Info

Publication number
JPS57197123A
JPS57197123A JP8327281A JP8327281A JPS57197123A JP S57197123 A JPS57197123 A JP S57197123A JP 8327281 A JP8327281 A JP 8327281A JP 8327281 A JP8327281 A JP 8327281A JP S57197123 A JPS57197123 A JP S57197123A
Authority
JP
Japan
Prior art keywords
tube
valve
closing
heating medium
valves
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
JP8327281A
Other languages
Japanese (ja)
Other versions
JPS6128504B2 (en
Inventor
Masayuki Goto
Yoshio Yamazaki
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP8327281A priority Critical patent/JPS57197123A/en
Publication of JPS57197123A publication Critical patent/JPS57197123A/en
Publication of JPS6128504B2 publication Critical patent/JPS6128504B2/ja
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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
    • 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
    • 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

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To perform the titled bending with a good heat efficiency and without a nuisance to a working environment, by making a heating medium to circulate in a tube, bending the plasticized tube into a predetermined shape under a continuous circulation of the heating medium, then making a cooling medium to flow. CONSTITUTION:A heating medium is circulated in a first circulation route A by closing valves 6, 11, 12, 13 and opening valves 9, 10, a thermoplastic resin made tube 8 is plasticized and the tube 8 is set in a mold. The heating medium is further circulated as it is being set. Then, air D is made to flow through the tube 8 by opening a valve 10 of a second circulation route B and closing the valve 6 of the first circulation route A and the heating medium in the tube 8 is returned to a tank 1. Then, by closing the valves 9, 12 and opening the valves 11, 13 a cold water C is made to flow in the tube 8 and it is cooled and washed. By closing the valve 11 and opening the valve 12 air is made to flow again and the water in the tube 8 is removed. Closing the valve 12, the tube 8 is taken off from flanges 7a, 7b and the valve 13 is closed and the valve 9 is opened. Thereafter this operation is repeated.
JP8327281A 1981-05-29 1981-05-29 Bending method of thermoplastic resin made tube Granted JPS57197123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8327281A JPS57197123A (en) 1981-05-29 1981-05-29 Bending method of thermoplastic resin made tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8327281A JPS57197123A (en) 1981-05-29 1981-05-29 Bending method of thermoplastic resin made tube

Publications (2)

Publication Number Publication Date
JPS57197123A true JPS57197123A (en) 1982-12-03
JPS6128504B2 JPS6128504B2 (en) 1986-06-30

Family

ID=13797710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8327281A Granted JPS57197123A (en) 1981-05-29 1981-05-29 Bending method of thermoplastic resin made tube

Country Status (1)

Country Link
JP (1) JPS57197123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007172A1 (en) * 1993-09-04 1995-03-16 Itt Automotive Europe Gmbh Process and device for bending plastic tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995007172A1 (en) * 1993-09-04 1995-03-16 Itt Automotive Europe Gmbh Process and device for bending plastic tubes

Also Published As

Publication number Publication date
JPS6128504B2 (en) 1986-06-30

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