[go: up one dir, main page]

JPS57174224A - Injection molding machine - Google Patents

Injection molding machine

Info

Publication number
JPS57174224A
JPS57174224A JP6085881A JP6085881A JPS57174224A JP S57174224 A JPS57174224 A JP S57174224A JP 6085881 A JP6085881 A JP 6085881A JP 6085881 A JP6085881 A JP 6085881A JP S57174224 A JPS57174224 A JP S57174224A
Authority
JP
Japan
Prior art keywords
cylinder
interior
injection
molding machine
fitted
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
JP6085881A
Other languages
Japanese (ja)
Inventor
Noritaka Hayashi
Tetsuya Maeda
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP6085881A priority Critical patent/JPS57174224A/en
Publication of JPS57174224A publication Critical patent/JPS57174224A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide an injection molding machine capable of injection-molding a foamed plastic molded body by a method wherein the interior of a heating cylinder is sealed off at the step of charging a molding resin material into the cylinder, and an end of the cylinder is opened at an injection step. CONSTITUTION:A nozzle tip 35 has a ball valve 36 lossely fitted in a valve chamber 35b taperedly broadended from a nozzle part 35a of the tip end thereof to a succeeding rear part. When a desired pressure is exerted to the interior of a cylinder main body 32, the ball valve 35a closes the nozzle part 35a to seal off the interior of the cylinder airtightly. Gas vent holes 37 provided on the rear side of the cylinder main body 3 are closed by plugs 38, 38..., and a pressure gauge is fitted to the gas vent hole 37 located at the rearmost part to measure the pressure of the generated gas.
JP6085881A 1981-04-22 1981-04-22 Injection molding machine Pending JPS57174224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6085881A JPS57174224A (en) 1981-04-22 1981-04-22 Injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6085881A JPS57174224A (en) 1981-04-22 1981-04-22 Injection molding machine

Publications (1)

Publication Number Publication Date
JPS57174224A true JPS57174224A (en) 1982-10-26

Family

ID=13154492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6085881A Pending JPS57174224A (en) 1981-04-22 1981-04-22 Injection molding machine

Country Status (1)

Country Link
JP (1) JPS57174224A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213561A (en) * 1975-07-23 1977-02-01 Asahi Dow Ltd Process for molding cellular material
JPS5428426A (en) * 1977-08-05 1979-03-03 Kurimoto Ltd Selffnavigating float gate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5213561A (en) * 1975-07-23 1977-02-01 Asahi Dow Ltd Process for molding cellular material
JPS5428426A (en) * 1977-08-05 1979-03-03 Kurimoto Ltd Selffnavigating float gate

Similar Documents

Publication Publication Date Title
CA2189350A1 (en) Method and apparatus for injection molding
KR880010888A (en) Injection molding device
GB1484753A (en) Nozzle for injection moulding thermoplastics
AU574441B2 (en) Injection moulding
GB1441053A (en) Process and apparatus for injection moulding an article having sandwich construction
GB1535130A (en) Injection moulding machines
CA2065856A1 (en) Method for the use of gas assistance in the molding of plastic articles
EP0995569A3 (en) Method and device for injection moulding of plastic articles made of thermoplastic material
JP2788324B2 (en) Gas shut-off valve and method for controlling plastic processing equipment equipped with the gas shut-off valve
EP0384545A3 (en) Mould for moulding an article
ATE200641T1 (en) NEEDLE CLOSURE NOZZLE WITH INJECTION MOLD AND CLOSURE NEEDLE
JPS57174224A (en) Injection molding machine
JPS5517569A (en) Method and structure for prevention of drooling in injection molding die
GB912695A (en) Improvements in or relating to methods of and devices for maintaining the follow-up pressure in injection moulds
DE3269367D1 (en) Injector for plastic molds
JPS57201638A (en) Insert molding method of thin-wall parts
JPS54111557A (en) Hollow molded article having integrated internal ribs, and method for forming the same
KR880002475Y1 (en) Air outlet valve of tire vulcanization mold
JPS5741913A (en) Pressure molding machine
JPS5692037A (en) Chuck for use in cooling plastic molding
JPS5736634A (en) Method and apparatus for preventing remaining material from leaking in injection molding
JPS5743846A (en) Gas injecting molding method and apparatus in molding machine
GB1459496A (en) Plastic moulding machine
JPS5511888A (en) Injection molding machine
JPS5761540A (en) Injection molding machine