CA2426858A1 - Gas valve pin mechanism - Google Patents

Gas valve pin mechanism Download PDF

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Publication number
CA2426858A1
CA2426858A1 CA002426858A CA2426858A CA2426858A1 CA 2426858 A1 CA2426858 A1 CA 2426858A1 CA 002426858 A CA002426858 A CA 002426858A CA 2426858 A CA2426858 A CA 2426858A CA 2426858 A1 CA2426858 A1 CA 2426858A1
Authority
CA
Canada
Prior art keywords
pin member
gas
mold cavity
pin mechanism
plastic
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
CA002426858A
Other languages
French (fr)
Other versions
CA2426858C (en
Inventor
Tristan Seres
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.)
Incoe Corp
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
Publication of CA2426858A1 publication Critical patent/CA2426858A1/en
Application granted granted Critical
Publication of CA2426858C publication Critical patent/CA2426858C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B29C45/20—Injection nozzles
    • 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
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1734—Nozzles therefor
    • B29C45/1735—Nozzles for introducing the fluid through the mould gate, e.g. incorporated in the injection nozzle

Landscapes

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

Abstract

A valve-gate mechanism for use with gas-assisted plastic injection molding systems. A
moveable pin mechanism is positioned in a bushing or machine nozzle to regulate the injection of plastic material into a mold cavity. The pin mechanism has an outer pin member and an inner pin member. Movement of the inner pin member relative to the outer pin member allows gas to be injected into the plastic in the mold cavity. A spring member, such as a Belleville washer, biases the inner pin member to a closed position relative to the outer pin member. Gas pressure from the gas source overcomes the force of the spring member allowing gas to enter into the mold cavity.
CA002426858A 2000-10-23 2001-10-23 Gas valve pin mechanism Expired - Fee Related CA2426858C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US69353300A 2000-10-23 2000-10-23
US09/693,533 2000-10-23
PCT/US2001/046060 WO2002034496A2 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism

Publications (2)

Publication Number Publication Date
CA2426858A1 true CA2426858A1 (en) 2002-05-02
CA2426858C CA2426858C (en) 2007-09-25

Family

ID=35814997

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002426858A Expired - Fee Related CA2426858C (en) 2000-10-23 2001-10-23 Gas valve pin mechanism

Country Status (8)

Country Link
EP (1) EP1337389A4 (en)
JP (1) JP4170755B2 (en)
KR (1) KR100777378B1 (en)
AU (2) AU2002232474B2 (en)
CA (1) CA2426858C (en)
IL (2) IL155530A0 (en)
MX (1) MXPA03003514A (en)
WO (1) WO2002034496A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025833A1 (en) * 2003-09-12 2005-03-24 Injectnotech Inc. Injection molding valve gate system and activating mechanism

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101036917B1 (en) * 2008-09-29 2011-05-25 주식회사 유도 High and low -Contralling device of Valve pin of hot runner system for injection molding machine
DE102010022366B4 (en) * 2010-06-01 2018-05-17 Psg Plastic Service Gmbh Device for actuating a needle valve nozzle
CN108081551B (en) * 2016-11-21 2024-01-30 柳道万和(苏州)热流道系统有限公司 Hot runner system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940123A (en) * 1957-07-17 1960-06-14 Basf Ag Shut-off nozzle for injection molding of thermoplastic materials
US3941540A (en) * 1971-07-07 1976-03-02 Diamond Tool & Die Company Sprue bushing for a single cavity or center sprued mold
JPS53102960A (en) * 1977-02-21 1978-09-07 Asahi Chem Ind Co Ltd Injection mold
US4474717A (en) * 1982-05-24 1984-10-02 Lang Fastener Corporation Method of making a twin-wall internally corrugated plastic structural part with a smooth non-cellular skin
AT390758B (en) * 1988-09-19 1990-06-25 Engel Gmbh Maschbau INJECTION MOLDING NOZZLE FOR AN INJECTION MOLDING MACHINE
US4917594A (en) * 1989-02-28 1990-04-17 Mold-Masters Limited Injection molding system with gas flow through valve gate
DE3910025A1 (en) * 1989-03-28 1990-10-04 Krauss Maffei Ag GAS LOCKING VALVE AND METHOD FOR CONTROLLING A PLASTIC PROCESSING SYSTEM PROVIDED WITH SUCH A GAS LOCKING VALVE
US5054689A (en) * 1990-05-11 1991-10-08 Hoover Universal, Inc. Combination plastic and gas injection nozzle assembly and sequential method of operation
JPH0712619B2 (en) * 1990-07-18 1995-02-15 豊田合成株式会社 Injection hollow mold
US5770237A (en) * 1992-05-18 1998-06-23 Cinpres Limited Method and apparatus for producing an injection moulding of plastics material using gas assistance and a valve to control the gas supply passage
JP3294006B2 (en) * 1993-09-22 2002-06-17 旭化成株式会社 Hollow injection molding method and pressurized fluid press-in / discharge device used therefor
CA2111248C (en) * 1993-12-13 2002-05-07 Alex C. Teng Valve gated injection molding apparatus with a spring in the piston
JP3251772B2 (en) * 1994-06-06 2002-01-28 三菱エンジニアリングプラスチックス株式会社 Gas injection nozzle
GB9708584D0 (en) * 1997-04-29 1997-06-18 Sp Tyres Uk Ltd Mould vents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025833A1 (en) * 2003-09-12 2005-03-24 Injectnotech Inc. Injection molding valve gate system and activating mechanism
US7452201B2 (en) 2003-09-12 2008-11-18 Injectnotech Inc. Injection molding valve gate system and activating mechanism

Also Published As

Publication number Publication date
KR20030045133A (en) 2003-06-09
WO2002034496A3 (en) 2002-06-20
MXPA03003514A (en) 2004-05-04
JP4170755B2 (en) 2008-10-22
IL155530A (en) 2006-08-01
JP2004512196A (en) 2004-04-22
KR100777378B1 (en) 2007-11-19
EP1337389A4 (en) 2006-03-08
AU2002232474B2 (en) 2007-08-09
AU3247402A (en) 2002-05-06
IL155530A0 (en) 2003-11-23
WO2002034496B1 (en) 2002-08-22
WO2002034496A2 (en) 2002-05-02
EP1337389A2 (en) 2003-08-27
CA2426858C (en) 2007-09-25

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Legal Events

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EEER Examination request
MKLA Lapsed