JPS57116616A - Forming method for independent arc form corrugate plastic pipe - Google Patents

Forming method for independent arc form corrugate plastic pipe

Info

Publication number
JPS57116616A
JPS57116616A JP56003518A JP351881A JPS57116616A JP S57116616 A JPS57116616 A JP S57116616A JP 56003518 A JP56003518 A JP 56003518A JP 351881 A JP351881 A JP 351881A JP S57116616 A JPS57116616 A JP S57116616A
Authority
JP
Japan
Prior art keywords
pipe
parts
mold
die
controller
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.)
Pending
Application number
JP56003518A
Other languages
Japanese (ja)
Inventor
Satoru Okada
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric 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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP56003518A priority Critical patent/JPS57116616A/en
Publication of JPS57116616A publication Critical patent/JPS57116616A/en
Pending 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • 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
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • 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
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/78—Measuring, controlling or regulating
    • B29C2049/787—Thickness
    • B29C2049/7871—Thickness of the extruded preform thickness
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29L2023/18—Pleated or corrugated hoses

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a corrugated pipe uniform in cross section and wall thickness by a method wherein the speed of a mold piece rotated endlessly is retarded at the parts corresponding to ridge parts of the corrugated pipe and is accelerated at the part corresponding to groove parts of the pipe. CONSTITUTION:A molten plastic is extruded from a die of a die head 1 in the shape of a pipe 2, and halved mold pieces 3, 3' are mated to each other to constitute a circular shaped molding tunnel immediately before the pipe 2 is extruded from the die. When forming the pipe by pressing it against the mold pieces under the effect of an air pressure or a vacuum, the mold pieces is moved more slowly at the ridge parts and faster at the groove parts by a system including a contacting element 8 which detects the corrugated condition of the mold surface, a variable resistor 9 for generating a voltage according to the displacement of the element 8, a fine adjustment primary controller 10 for controlling a driving motor 7 in accordance with the voltage generated by the resistor 9, and a secondary controller 11 for controlling the motor 7 in response to a signal fed from controller 10.
JP56003518A 1981-01-13 1981-01-13 Forming method for independent arc form corrugate plastic pipe Pending JPS57116616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56003518A JPS57116616A (en) 1981-01-13 1981-01-13 Forming method for independent arc form corrugate plastic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003518A JPS57116616A (en) 1981-01-13 1981-01-13 Forming method for independent arc form corrugate plastic pipe

Publications (1)

Publication Number Publication Date
JPS57116616A true JPS57116616A (en) 1982-07-20

Family

ID=11559581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003518A Pending JPS57116616A (en) 1981-01-13 1981-01-13 Forming method for independent arc form corrugate plastic pipe

Country Status (1)

Country Link
JP (1) JPS57116616A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988466A (en) * 1987-02-19 1991-01-29 Uponor N.V., Emmaplein Method and an apparatus for the production of ribbed pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4988466A (en) * 1987-02-19 1991-01-29 Uponor N.V., Emmaplein Method and an apparatus for the production of ribbed pipes

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