JPS5496562A - Low-pressure transfer molding machine - Google Patents

Low-pressure transfer molding machine

Info

Publication number
JPS5496562A
JPS5496562A JP329178A JP329178A JPS5496562A JP S5496562 A JPS5496562 A JP S5496562A JP 329178 A JP329178 A JP 329178A JP 329178 A JP329178 A JP 329178A JP S5496562 A JPS5496562 A JP S5496562A
Authority
JP
Japan
Prior art keywords
mold
heated
resin
plunger
cull
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
JP329178A
Other languages
Japanese (ja)
Other versions
JPS6258294B2 (en
Inventor
Isao Araki
Yoshiaki Wakashima
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 JP329178A priority Critical patent/JPS5496562A/en
Publication of JPS5496562A publication Critical patent/JPS5496562A/en
Publication of JPS6258294B2 publication Critical patent/JPS6258294B2/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity

Abstract

PURPOSE:Heaters are distributed and embedded directly in the mold or in upper and lower bolsters supporting the mold and a guide block guiding plunger, thereby preventing the occurrence of uncuring and unloading even when the molding cycle is shortened. CONSTITUTION:Upper and lower halves 20, 32 of the mold are always heated to a uniform temperature by heaters 26, 34 which are embedded in upper and lower bolsters 19, 31. Further, plunger 24 also is heated by heater 27 in guide block 22 even when it stays above during except polymer extrusion. Resultingly, when molding is effected by putting down plunger 24 to extrude the resin that begins to melt on cull 35 through main and sub-runners 36, 37 and gate 38 into the cavity of the mold, the resin is sufficiently heated so that each resin in the cavity, runners, cull and oters attains a specified hardness during heated after a prescribed time because each half of the mold is uniformly heated.
JP329178A 1978-01-18 1978-01-18 Low-pressure transfer molding machine Granted JPS5496562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP329178A JPS5496562A (en) 1978-01-18 1978-01-18 Low-pressure transfer molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP329178A JPS5496562A (en) 1978-01-18 1978-01-18 Low-pressure transfer molding machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP790186A Division JPS61171316A (en) 1986-01-20 1986-01-20 Transfer molding machine

Publications (2)

Publication Number Publication Date
JPS5496562A true JPS5496562A (en) 1979-07-31
JPS6258294B2 JPS6258294B2 (en) 1987-12-04

Family

ID=11553280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP329178A Granted JPS5496562A (en) 1978-01-18 1978-01-18 Low-pressure transfer molding machine

Country Status (1)

Country Link
JP (1) JPS5496562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156322U (en) * 1981-03-27 1982-10-01
JPH0231130U (en) * 1988-08-22 1990-02-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156322U (en) * 1981-03-27 1982-10-01
JPH0231130U (en) * 1988-08-22 1990-02-27

Also Published As

Publication number Publication date
JPS6258294B2 (en) 1987-12-04

Similar Documents

Publication Publication Date Title
IL74471A (en) Process of making injection moldings and injection mold for carrying out the process
ES8301439A1 (en) Process for injection-moulding plastics.
JPS5630841A (en) Plastic molding method and metallic mold therefor
ATE100372T1 (en) STEPPED SHELL FOR INJECTION MOLDING.
JPS56105943A (en) Projecting molding mold
JPS5496562A (en) Low-pressure transfer molding machine
JPS54106569A (en) Injection molding of resin product having insert
ES2149112A1 (en) Gas injection mold
JPS5537335A (en) 2 layer parisons molding method in injection blast molding
ES377540A1 (en) Injection moulding apparatus with dynamic impact injection assist means and control therefor
JPS6436421A (en) Injection molding method for gate seal
JPS57191032A (en) Hot runner mold device
JPS5753334A (en) Polyestel resin injection molding machine and polyestel resin molding by said machine
JPS6414013A (en) Simple manufacturing machine for false nail
JPS5722034A (en) Molding method for thermosetting material
JPS5624140A (en) Production of molded article having embedded reinforcer
JPS5793125A (en) Injection molding and stretching blow forming method
JPS5732922A (en) Method and device for mold attachment and clamp adjustment of injection molding machine
JPS55121044A (en) Transfer molding equipment capable of continuous molding
JPS5764533A (en) Method and device for injection molding
JPS56151540A (en) Injection molding of polyester resin
JPS53120769A (en) Injection control of injection molding machine
JPS575339A (en) Molding method and molding die
KR810000949B1 (en) Method for producing a slide fastener stringer
JPS56144136A (en) Injection molding device for polyester resin