WO2002034496B1 - Gas valve pin mechanism - Google Patents

Gas valve pin mechanism

Info

Publication number
WO2002034496B1
WO2002034496B1 PCT/US2001/046060 US0146060W WO0234496B1 WO 2002034496 B1 WO2002034496 B1 WO 2002034496B1 US 0146060 W US0146060 W US 0146060W WO 0234496 B1 WO0234496 B1 WO 0234496B1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pin
set forth
gas
head portion
Prior art date
Application number
PCT/US2001/046060
Other languages
French (fr)
Other versions
WO2002034496A2 (en
WO2002034496A3 (en
Inventor
Tristan Seres
Original Assignee
Incoe Corp
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
Priority to EP01988651A priority Critical patent/EP1337389A4/en
Application filed by Incoe Corp filed Critical Incoe Corp
Priority to CA002426858A priority patent/CA2426858C/en
Priority to AU2002232474A priority patent/AU2002232474B2/en
Priority to BR0114844-3A priority patent/BR0114844A/en
Priority to KR1020037005636A priority patent/KR100777378B1/en
Priority to AU3247402A priority patent/AU3247402A/en
Priority to IL15553001A priority patent/IL155530A0/en
Priority to JP2002537519A priority patent/JP4170755B2/en
Priority to MXPA03003514A priority patent/MXPA03003514A/en
Publication of WO2002034496A2 publication Critical patent/WO2002034496A2/en
Publication of WO2002034496A3 publication Critical patent/WO2002034496A3/en
Publication of WO2002034496B1 publication Critical patent/WO2002034496B1/en
Priority to IL155530A priority patent/IL155530A/en

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
    • B29C45/1703—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
    • 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

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.

Claims

AMENDED CLAIMS[received by the International Bureau on 07 June 2002 (07.06.02); original claims 1-36 replaced by amended claims 1-31 (6 pages)]
1. A gas pin mechanism comprising: an outer pin member having an internal passageway; said outer pin member having a first body portion and a first head portion, said first head portion having a cavity therein; an inner pin member; said inner pin member having a second body portion positioned in said internal passageway and a second head portion positioned in said cavity in said first head portion; a cap member secured to said first head portion and enclosing said cavity; a spring member positioned between said second head portion and said cap member; said spring member biasing said inner pin member relative to said outer pin member in a direction away from said cap member; and said first body portion having a first valve member and said second body portion having a second valve member, said first and second valve members forming a valve mechanism for controlling the flow of a fluid material therethrough.
2. The gas pin mechanism as set forth in claim 1 wherein said spring member comprises a spring washer.
3. The gas pin mechanism as set forth in claim 2 wherein said spring washer comprises a Belleville washer member.
4. The gas pin mechanism as set forth in claim 1 wherein said cap member is threadedly secured to said first head portion.
5. The gas pin mechanism as set forth in claim l wherein said spring member biases said valve
20 said valve mechanism to a closed position preventing flow of a fluid therethrough.
6. The gas pin mechanism as set forth in claim 1 further comprising a gas input opening into said pin mechanism in order to allow gas to flow into a space between said inner and outer pin members.
7. ' The gas pin mechanism as set forth in claim 1 wherein injection of gas into said pin mechanism overcomes the biasing force of said spring member and opens said valve mechanism.
8. The gas pin mechanism as set forth in claim 6 wherein said second head portion has an enlarged surface which is exposed to gas pressure introduced through said gas input opening.
9. A valve-gate bushing mechanism comprising: a bushing; and a gas pin mechanism positioned in said bushing for controlling the flow of plastic material therethrough, said gas pin mechanism comprising: an outer pin member having an internal passageway; said outer pin member having a first body portion and a first head portion, said first head portion having a cavity therein; an inner pin member; said inner pin member having a second body portion positioned in said internal passageway and a second head portion positioned in said cavity in said first head portion; a cap member secured to said first head portion and enclosing said cavity; a spring member positioned between said second head portion and said cap member; said spring member biasing said inner pin member relative to said outer pin member in a direction away from said cap member; and said first body portion having a first valve member and said second body portion having a second valve member, said first and second valve members forming a valve mechanism for controlling the flow of a fluid material therethrough.
10. The valve-gate bushing mechanism as set forth in claim 9 further comprising a moveable piston member attached to said pin mechanism for controlling the movement of said pin mechanism in said bushing mechanism.
11. The valve-gate bushing mechanism as set forth in claim 9 wherein said spring member comprises a spring washer.
12. The valve-gate bushing mechanism as set forth in claim 11 wherein said spring washer comprises a Belleville washer member.
13. The valve-gate bushing mechanism as set forth in claim 9 wherein said cap member is threadedly secured to said first head portion.
14. The valve-gate bushing mechanism as set forth in claim 9 wherein said spring member biases said valve mechanism to a closed position preventing flow of a fluid therethrough.
15. The valve-gate bushing mechanism as set forth in claim 9 further comprising a gas input opening into said pin mechanism in order to allow gas to flow into a space between said inner and outer pin members.
16. The valve-gate bushing mechanism as set forth in claim 9 wherein injection of gas into said pin mechanism overcomes the biasing force of said spring member and opens said valve mechanism.
22
17. The valve-gate bushing mechanism as set forth in claim IS wherein said second head portion has an enlarged surface which is exposed to gas pressure introduced through said gas input opening.
18. The valve-gate bushing mechanism as set forth in claim 9 further comprising an actuation mechanism connected to said gas pin mechanism for controlling the movement of said pin mechanism in said bushing mechanism.
19. The valve-gate bushing as set forth in claim 18 wherein said actuating mechanism comprises a pivoting arm member and a piston mechanism,
20. The valve-gate bushing as set forth in claim 19 wherein said pivoting arm member has a first end connected to said pin mechanism and a second end connected to said piston mechanism.
21. The valve-gate machine nozzle mechanism comprising: a machine nozzle; and a gas pin mechanism positioned in said machine nozzle controlling the flow of plastic material therethrough, said gas pin mechanism comprising: an outer pin member having an internal passageway; said outer pin member having a first body portion and a first head portion, said first head portion having a cavity therein; an inner pin member; said inner pin member having a second body portion positioned in said internal passageway and a second head portion positioned in said cavity in said first head portion; a cap member secured to said first head portion and enclosing said cavity; a spring member positioned between said second head portion and said cap member; said spring
23 member biasing said inner pin member relative to said outer pin member in a direction away from said cap member; and said first body portion having a first valve member and said second body portion having a second valve member, said first and second valve members forming a valve mechanism for controlling the flow of a fluid material therethrough.
22. The valve-gate bushing mechanism as set forth in claim 21 wherein said spring member comprises a spring washer.
23. The valve-gate bushing mechanism as set forth in claim 21 wherein said spring washer comprises a Belleville washer member.
24. The valve-gate bushing mechanism as set forth in claim 21 wherein said cap member is threadedly secured to said first head portion.
25. The valve-gate bushing mechanism as set forth in claim 21 wherein said spring member biases said valve mechanism to a closed position preventing flow of a fluid therethrough.
26. The valve-gate bushing mechanism as set forth in claim 21 further comprising a gas input opening into said pin mechanism in order to allow gas to flow into a space between said inner and outer pin members .
27. The valve-gate bushing mechanism as set forth in claim 21 wherein injection of gas into said pin mechanism overcomes the biasing force of said spring member and opens said valve mechanism.
28. The valve-gate bushing mechanism as set forth in claim 26 wherein said second head portion has an enlarged surface which is exposed to gas pressure introduced through said gas input opening.
24
29. The valve-gate bushing mechanism as set forth in claim 21 further comprising an actuation mechanism connected to said gas pin mechanism for controlling the movement of said pin mechanism in said bushing mechanism.
30. The valve-gate bushing as set forth in claim 29 wherein said actuating mechanism comprises a pivoting arm member and a piston mechanism.
31. The valve-gate bushing as set forth in claim 30 wherein said pivoting arm member has a first end connected to said pin mechanism and a second end connected to said piston mechanism.
25
PCT/US2001/046060 2000-10-23 2001-10-23 Gas valve pin mechanism WO2002034496A2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
AU3247402A AU3247402A (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
CA002426858A CA2426858C (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
AU2002232474A AU2002232474B2 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
BR0114844-3A BR0114844A (en) 2000-10-23 2001-10-23 Gas pin, plug bushing, and plug machine nozzle mechanisms
KR1020037005636A KR100777378B1 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
EP01988651A EP1337389A4 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
IL15553001A IL155530A0 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
JP2002537519A JP4170755B2 (en) 2000-10-23 2001-10-23 Gas valve pin mechanism
MXPA03003514A MXPA03003514A (en) 2000-10-23 2001-10-23 Gas valve pin mechanism.
IL155530A IL155530A (en) 2000-10-23 2003-04-21 Gas valve pin mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US69353300A 2000-10-23 2000-10-23
US09/693,533 2000-10-23

Publications (3)

Publication Number Publication Date
WO2002034496A2 WO2002034496A2 (en) 2002-05-02
WO2002034496A3 WO2002034496A3 (en) 2002-06-20
WO2002034496B1 true WO2002034496B1 (en) 2002-08-22

Family

ID=35814997

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/046060 WO2002034496A2 (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)

Families Citing this family (4)

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

Also Published As

Publication number Publication date
AU2002232474B2 (en) 2007-08-09
EP1337389A2 (en) 2003-08-27
EP1337389A4 (en) 2006-03-08
AU3247402A (en) 2002-05-06
MXPA03003514A (en) 2004-05-04
JP2004512196A (en) 2004-04-22
WO2002034496A2 (en) 2002-05-02
KR20030045133A (en) 2003-06-09
JP4170755B2 (en) 2008-10-22
CA2426858A1 (en) 2002-05-02
KR100777378B1 (en) 2007-11-19
IL155530A0 (en) 2003-11-23
WO2002034496A3 (en) 2002-06-20
CA2426858C (en) 2007-09-25
IL155530A (en) 2006-08-01

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