JPS5655223A - Method of molding spigot of porous plastic tube - Google Patents

Method of molding spigot of porous plastic tube

Info

Publication number
JPS5655223A
JPS5655223A JP13224479A JP13224479A JPS5655223A JP S5655223 A JPS5655223 A JP S5655223A JP 13224479 A JP13224479 A JP 13224479A JP 13224479 A JP13224479 A JP 13224479A JP S5655223 A JPS5655223 A JP S5655223A
Authority
JP
Japan
Prior art keywords
spigot
pipe
hole
plastic
pressedly
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
JP13224479A
Other languages
Japanese (ja)
Other versions
JPS631176B2 (en
Inventor
Ryozo Oota
Takehiro Ito
Katsuro Ishihara
Atsushi Yoshikawa
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP13224479A priority Critical patent/JPS5655223A/en
Publication of JPS5655223A publication Critical patent/JPS5655223A/en
Publication of JPS631176B2 publication Critical patent/JPS631176B2/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • 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
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/02—Belling or enlarging, e.g. combined with forming a groove
    • B29C57/04—Belling or enlarging, e.g. combined with forming a groove using mechanical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE:To enable molding of a spigot which has an inner surface accuracy equivalent to that of a spigot of a holeless plastic tube, by a method wherein the end of a plastic pipe having a large number of holes in the direction of a pipe axis in a pipe wall is pressedly inserted into a spigot-forming mold under a heating condition. CONSTITUTION:The end of a porous pipe 3 having a large number of holes in the direction of a pipe axis in a pipe wall is heated, and said heated portion is pressedly inserted into a gap between a spigot-forming mold 1 and an outer mold 2 to be enlarged into a spigot. After a hole in the end 31 of the plastic pipe is closed by means of a proper system, a pressure medium, such as pressurized air P, is pressedly fed into through the hole in an end 32 of the plastic pipe. Feeding-in with pressure of said air P pressurizes the hole in he end of the porous plastic pipe between the molds 1 and 2, and said hole makes contact with a surface, where inner and outer pipe walls and said walls make contact with the molds, is increased in the pressure. This prevents the occurrence of waving at a spigot cross section, and permits the formation of a smooth inner surface of the spigot.
JP13224479A 1979-10-12 1979-10-12 Method of molding spigot of porous plastic tube Granted JPS5655223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13224479A JPS5655223A (en) 1979-10-12 1979-10-12 Method of molding spigot of porous plastic tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13224479A JPS5655223A (en) 1979-10-12 1979-10-12 Method of molding spigot of porous plastic tube

Publications (2)

Publication Number Publication Date
JPS5655223A true JPS5655223A (en) 1981-05-15
JPS631176B2 JPS631176B2 (en) 1988-01-11

Family

ID=15076730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13224479A Granted JPS5655223A (en) 1979-10-12 1979-10-12 Method of molding spigot of porous plastic tube

Country Status (1)

Country Link
JP (1) JPS5655223A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58220704A (en) * 1982-06-18 1983-12-22 C I Kasei Co Ltd Molding method of receptacle on tube having through holes in tube wall
US4474726A (en) * 1980-11-12 1984-10-02 Kubota Tekko Kabushiki Kaisha Method of producing a channeled plastic pipe with closed channel ends
JPS60228126A (en) * 1984-04-26 1985-11-13 Mitsubishi Plastics Ind Ltd Molding method of faucet of porous plastic pipe
US4965036A (en) * 1988-04-12 1990-10-23 Osaka Bousi Construction Co., Ltd. Method of lining a pipe with a tube including passing heated fluid through the bores of the tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024339A (en) * 1973-06-27 1975-03-15
JPS54106581A (en) * 1978-02-08 1979-08-21 Sekisui Chem Co Ltd Method for forming faucet at end of plastic pipe having through-holes in tube wall

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024339A (en) * 1973-06-27 1975-03-15
JPS54106581A (en) * 1978-02-08 1979-08-21 Sekisui Chem Co Ltd Method for forming faucet at end of plastic pipe having through-holes in tube wall

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474726A (en) * 1980-11-12 1984-10-02 Kubota Tekko Kabushiki Kaisha Method of producing a channeled plastic pipe with closed channel ends
JPS58220704A (en) * 1982-06-18 1983-12-22 C I Kasei Co Ltd Molding method of receptacle on tube having through holes in tube wall
JPS60228126A (en) * 1984-04-26 1985-11-13 Mitsubishi Plastics Ind Ltd Molding method of faucet of porous plastic pipe
US4965036A (en) * 1988-04-12 1990-10-23 Osaka Bousi Construction Co., Ltd. Method of lining a pipe with a tube including passing heated fluid through the bores of the tube

Also Published As

Publication number Publication date
JPS631176B2 (en) 1988-01-11

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