JPS5446265A - Mandrel for molding plastic spiral corrugated pipe - Google Patents

Mandrel for molding plastic spiral corrugated pipe

Info

Publication number
JPS5446265A
JPS5446265A JP11217877A JP11217877A JPS5446265A JP S5446265 A JPS5446265 A JP S5446265A JP 11217877 A JP11217877 A JP 11217877A JP 11217877 A JP11217877 A JP 11217877A JP S5446265 A JPS5446265 A JP S5446265A
Authority
JP
Japan
Prior art keywords
mandrel
ridge
plastic
groove
spiral corrugated
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
JP11217877A
Other languages
Japanese (ja)
Inventor
Kazuo Saito
Satoru Okada
Akira Watanabe
Tsuneaki Komazawa
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 JP11217877A priority Critical patent/JPS5446265A/en
Publication of JPS5446265A publication Critical patent/JPS5446265A/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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29L2023/003—Tubular articles having irregular or rough surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:A mandrel for molding plastic spiral corrugated pipes, capable of reducing frictional force, facilitating mold release, and increasing the extrusion speed, comprising a molding part and a specific holding part. CONSTITUTION:A plastic is extruded by using the mandrel 5 having the molding part A, wherein only the outside diameter of the corrugation shape is gradually decreased as in the conventioned mandrel to mold the plastic 6, and the holding part B, wherein the width of the ridge is narrowed and the groove is flattened so that the height of the ridge and depth of the groove may be in agreement with the inner groove and ridge of the final product. The pipe is then cooled to decrease the frictional force between the spiral pipe 7 and the mandrel 5.
JP11217877A 1977-09-20 1977-09-20 Mandrel for molding plastic spiral corrugated pipe Pending JPS5446265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11217877A JPS5446265A (en) 1977-09-20 1977-09-20 Mandrel for molding plastic spiral corrugated pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11217877A JPS5446265A (en) 1977-09-20 1977-09-20 Mandrel for molding plastic spiral corrugated pipe

Publications (1)

Publication Number Publication Date
JPS5446265A true JPS5446265A (en) 1979-04-12

Family

ID=14580195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11217877A Pending JPS5446265A (en) 1977-09-20 1977-09-20 Mandrel for molding plastic spiral corrugated pipe

Country Status (1)

Country Link
JP (1) JPS5446265A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1302908C (en) * 2002-11-15 2007-03-07 曼夫瑞德·A·A·鲁波克 Molding apparatus with mold blocks having face adjustment
CN102310541A (en) * 2011-09-21 2012-01-11 武汉工程大学 Polymer material bar single screw extrusion cylinder molding method and molding device thereof
CN104924492A (en) * 2015-06-30 2015-09-23 无锡二橡胶股份有限公司 Hot air duct production mould

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1302908C (en) * 2002-11-15 2007-03-07 曼夫瑞德·A·A·鲁波克 Molding apparatus with mold blocks having face adjustment
CN102310541A (en) * 2011-09-21 2012-01-11 武汉工程大学 Polymer material bar single screw extrusion cylinder molding method and molding device thereof
CN104924492A (en) * 2015-06-30 2015-09-23 无锡二橡胶股份有限公司 Hot air duct production mould

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