JPS5621838A - Plastic molding device - Google Patents

Plastic molding device

Info

Publication number
JPS5621838A
JPS5621838A JP9610679A JP9610679A JPS5621838A JP S5621838 A JPS5621838 A JP S5621838A JP 9610679 A JP9610679 A JP 9610679A JP 9610679 A JP9610679 A JP 9610679A JP S5621838 A JPS5621838 A JP S5621838A
Authority
JP
Japan
Prior art keywords
plunger
head
temperature
imbedded
sleeve
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
JP9610679A
Other languages
Japanese (ja)
Inventor
Naotake Ebinuma
Susumu Tsujiku
Aizo Kaneda
Masayoshi Aoki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9610679A priority Critical patent/JPS5621838A/en
Publication of JPS5621838A publication Critical patent/JPS5621838A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/586—Injection or transfer plungers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent from backflow of molten molding material in such a manner as adjusts gap size between a sleeve and a plunger, by a method wherein heaters are imbedded in a sleeve seperately from a cylinder, and in a plunger separately from a screw, and their respective temperatures are controlled individually. CONSTITUTION:For example, a plunger head 3, 3 cartridge heaters 1, and a head 3 are imbedded. The heads 1 are connected to a heater power source 9, and separately from said connection, a temperature sensor 2 to a temperature set controller 10. This enables the head 3 to maintain a constant temperature, or a constant heat expansion amount when it is positioned at the outside during the period of waiting for molding operation and also when positioned at the inside of the mold during the period of resin-pushing operation. An external diameter of the plunger head 3 is varied by controlling the temperature at a necessary time. EFFECT:To enable the reduction in slide resistance, the improvement of endurance, the increase in yield, and the reduction in installation cost.
JP9610679A 1979-07-30 1979-07-30 Plastic molding device Pending JPS5621838A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9610679A JPS5621838A (en) 1979-07-30 1979-07-30 Plastic molding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9610679A JPS5621838A (en) 1979-07-30 1979-07-30 Plastic molding device

Publications (1)

Publication Number Publication Date
JPS5621838A true JPS5621838A (en) 1981-02-28

Family

ID=14156129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9610679A Pending JPS5621838A (en) 1979-07-30 1979-07-30 Plastic molding device

Country Status (1)

Country Link
JP (1) JPS5621838A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02127423U (en) * 1989-03-31 1990-10-19
JPH0821530A (en) * 1994-07-07 1996-01-23 Inoue Seisakusho:Kk Pressurizing extruding device
CN105856531A (en) * 2016-03-31 2016-08-17 界首市华盛塑料机械有限公司 Energy-saving extrusion screw special for modification of reworked plastic

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02127423U (en) * 1989-03-31 1990-10-19
JPH0821530A (en) * 1994-07-07 1996-01-23 Inoue Seisakusho:Kk Pressurizing extruding device
CN105856531A (en) * 2016-03-31 2016-08-17 界首市华盛塑料机械有限公司 Energy-saving extrusion screw special for modification of reworked plastic

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