JPS6480512A - Flange molding method for hollow molded product - Google Patents

Flange molding method for hollow molded product

Info

Publication number
JPS6480512A
JPS6480512A JP23969487A JP23969487A JPS6480512A JP S6480512 A JPS6480512 A JP S6480512A JP 23969487 A JP23969487 A JP 23969487A JP 23969487 A JP23969487 A JP 23969487A JP S6480512 A JPS6480512 A JP S6480512A
Authority
JP
Japan
Prior art keywords
molded product
flange
hollow molded
expanded section
molding
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
JP23969487A
Other languages
Japanese (ja)
Other versions
JPH0790594B2 (en
Inventor
Kohei Koga
Yoshiki Miyazawa
Shigeo Yoshizawa
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.)
Nissei ASB Machine Co Ltd
Original Assignee
Nissei ASB Machine 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 Nissei ASB Machine Co Ltd filed Critical Nissei ASB Machine Co Ltd
Priority to JP62239694A priority Critical patent/JPH0790594B2/en
Publication of JPS6480512A publication Critical patent/JPS6480512A/en
Publication of JPH0790594B2 publication Critical patent/JPH0790594B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • 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
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4807—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by movable mould parts in the mould halves
    • 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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To enhance the molding accuracy of a flange and increase the yield of a molded product by molding an expanded section by a cavity provided on the mold surface of a blow mold simultaneously with blow molding of a hollow molded product, compressing the end surface of said expanded section by pressure and forming a flange around the end of the expanded section. CONSTITUTION:A preform 10 is set in a blow mold 1 and clamped. After that, air is blown from a blowing core to mold a thin wall cup shaped hollow molded product 11. At that time, a pressing component 4 connected with a piston rod 2 is retracted deep into a cavity 2. Then, part of the preform 10 is pushed into deeper than a step 3 of the cavity 2 by air pressure, and expanded. Before an end face 12a of said expanded section 12 is cooled, the pressing component 4 is pushed out toward the step 3 to form a flange 13. The molding accuracy of the flange is enhanced by thus process, and the yield of the molded product is increased.
JP62239694A 1987-09-24 1987-09-24 Blown mold for hollow molding with flange Expired - Lifetime JPH0790594B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62239694A JPH0790594B2 (en) 1987-09-24 1987-09-24 Blown mold for hollow molding with flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239694A JPH0790594B2 (en) 1987-09-24 1987-09-24 Blown mold for hollow molding with flange

Publications (2)

Publication Number Publication Date
JPS6480512A true JPS6480512A (en) 1989-03-27
JPH0790594B2 JPH0790594B2 (en) 1995-10-04

Family

ID=17048527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239694A Expired - Lifetime JPH0790594B2 (en) 1987-09-24 1987-09-24 Blown mold for hollow molding with flange

Country Status (1)

Country Link
JP (1) JPH0790594B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625048A (en) * 1985-07-01 1987-01-12 Mitsutoshi Matsuoka Gas temperature raising device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625048A (en) * 1985-07-01 1987-01-12 Mitsutoshi Matsuoka Gas temperature raising device

Also Published As

Publication number Publication date
JPH0790594B2 (en) 1995-10-04

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