JPS5660238A - Valve nozzle for injection molding device - Google Patents

Valve nozzle for injection molding device

Info

Publication number
JPS5660238A
JPS5660238A JP13527679A JP13527679A JPS5660238A JP S5660238 A JPS5660238 A JP S5660238A JP 13527679 A JP13527679 A JP 13527679A JP 13527679 A JP13527679 A JP 13527679A JP S5660238 A JPS5660238 A JP S5660238A
Authority
JP
Japan
Prior art keywords
gate
hole
valve
resin
columnlike
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
JP13527679A
Other languages
Japanese (ja)
Other versions
JPS6213889B2 (en
Inventor
Akira Yotsutsuji
Seiichi Ueda
Tadashi Uemura
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.)
OOSAKASHI
Osaka City
Original Assignee
OOSAKASHI
Osaka City
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 OOSAKASHI, Osaka City filed Critical OOSAKASHI
Priority to JP13527679A priority Critical patent/JPS5660238A/en
Priority to EP79104597A priority patent/EP0011805B1/en
Priority to DE7979104597T priority patent/DE2966731D1/en
Priority to US06/098,742 priority patent/US4285661A/en
Publication of JPS5660238A publication Critical patent/JPS5660238A/en
Publication of JPS6213889B2 publication Critical patent/JPS6213889B2/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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • 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
    • B29C45/20—Injection nozzles
    • B29C45/23—Feed stopping equipment
    • B29C45/234—Valves opened by the pressure of the moulding material
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/28—Closure devices therefor
    • B29C45/2806—Closure devices therefor consisting of needle valve systems
    • B29C2045/2882—Closure devices therefor consisting of needle valve systems closing by a movement in the counterflow direction

Abstract

PURPOSE:To mold the resin of high melting viscosity through injection while preventing the back flow thereof by forming a gate hole to be a columnlike straight hole and by providing a stopper in a hot-runner type valve nozzle. CONSTITUTION:The outside diameter of the rear end of a piston 21 is made larger than that of the front end thereof so that a valve stem 22 is moved to the side of a gate 25 with the increase of the injection pressure and that the gate 25 is closed automatically by the action of a spring 30. Moreover, the hole 32 of the gate 25 is formed to be a columnlike straight hole so as to increase the flow of resin, while the cross-sectional shape of the valve is made to be the same with that of the hole 32 of the gate so as to prevent the back flow of the resin from the aperture of the valves 23 and 37 to the side of a cylinder 20, and the stopper 33 is fitted so that the valves 23 and 37 stop at fixed positions. When slidable stabilizing fittings 34 and 39 are fitted, the valve 23 returns to the hole 32 of the gate smoothly without shaking.
JP13527679A 1978-12-05 1979-10-22 Valve nozzle for injection molding device Granted JPS5660238A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP13527679A JPS5660238A (en) 1979-10-22 1979-10-22 Valve nozzle for injection molding device
EP79104597A EP0011805B1 (en) 1978-12-05 1979-11-19 Valve nozzle for an injection molding machine
DE7979104597T DE2966731D1 (en) 1978-12-05 1979-11-19 Valve nozzle for an injection molding machine
US06/098,742 US4285661A (en) 1978-12-05 1979-11-30 Valve nozzle of injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13527679A JPS5660238A (en) 1979-10-22 1979-10-22 Valve nozzle for injection molding device

Publications (2)

Publication Number Publication Date
JPS5660238A true JPS5660238A (en) 1981-05-25
JPS6213889B2 JPS6213889B2 (en) 1987-03-30

Family

ID=15147915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13527679A Granted JPS5660238A (en) 1978-12-05 1979-10-22 Valve nozzle for injection molding device

Country Status (1)

Country Link
JP (1) JPS5660238A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025397A (en) * 2001-07-19 2003-01-29 Toyo Seikan Kaisha Ltd Method for molding preform by injection compression molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025397A (en) * 2001-07-19 2003-01-29 Toyo Seikan Kaisha Ltd Method for molding preform by injection compression molding

Also Published As

Publication number Publication date
JPS6213889B2 (en) 1987-03-30

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