DE69504394T2 - Zusammenbau aus Ventil und Schneckenspitze mit Stift - Google Patents

Zusammenbau aus Ventil und Schneckenspitze mit Stift

Info

Publication number
DE69504394T2
DE69504394T2 DE69504394T DE69504394T DE69504394T2 DE 69504394 T2 DE69504394 T2 DE 69504394T2 DE 69504394 T DE69504394 T DE 69504394T DE 69504394 T DE69504394 T DE 69504394T DE 69504394 T2 DE69504394 T2 DE 69504394T2
Authority
DE
Germany
Prior art keywords
valve
pin
assembly
screw tip
screw
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.)
Expired - Fee Related
Application number
DE69504394T
Other languages
English (en)
Other versions
DE69504394D1 (de
Inventor
Alain Viron
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.)
Netstal Maschinen AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9462127&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69504394(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of DE69504394D1 publication Critical patent/DE69504394D1/de
Publication of DE69504394T2 publication Critical patent/DE69504394T2/de
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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/52—Non-return devices
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/507—Screws characterised by the material or their manufacturing process
    • B29C48/509—Materials, coating or lining therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
DE69504394T 1994-04-13 1995-04-11 Zusammenbau aus Ventil und Schneckenspitze mit Stift Expired - Fee Related DE69504394T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9404488A FR2718800B1 (fr) 1994-04-13 1994-04-13 Clapet à goupille flottante et autocentrante à deux points d'appuis sur méplats usinés ou forgés suivant un angle donné.

Publications (2)

Publication Number Publication Date
DE69504394D1 DE69504394D1 (de) 1998-10-08
DE69504394T2 true DE69504394T2 (de) 1999-02-25

Family

ID=9462127

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69504394T Expired - Fee Related DE69504394T2 (de) 1994-04-13 1995-04-11 Zusammenbau aus Ventil und Schneckenspitze mit Stift

Country Status (7)

Country Link
US (1) US6227841B1 (de)
EP (1) EP0677371B1 (de)
AT (1) ATE170446T1 (de)
CA (1) CA2146813A1 (de)
DE (1) DE69504394T2 (de)
ES (1) ES2123923T3 (de)
FR (1) FR2718800B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241262A1 (de) * 2002-09-06 2004-03-18 Dr. Boy Gmbh & Co. Kg Schneckenkopf

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19849472C2 (de) * 1998-10-21 2002-11-28 Demag Ergotech Gmbh Rückströmsperre für die Plastifizier- und Einspritzschnecke in Spritzgießmaschinen
DE10210464B4 (de) * 2002-03-09 2007-07-26 Demag Ergotech Gmbh Rückströmsperre
CA2463281C (en) * 2004-04-05 2007-11-13 Husky Injection Molding Systems Ltd. Non-return valve for use in a molding system
US7425126B2 (en) * 2006-05-17 2008-09-16 Husky Injection Molding Systems Ltd. Molding-system valve having knockdown retainer
US7527493B1 (en) * 2007-11-01 2009-05-05 Md Plastics Incorporated Precise control non-return valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1335824A (en) * 1970-11-26 1973-10-31 Strode Components Ltd Injection moulding feed screw
DE2617977A1 (de) * 1976-04-24 1977-11-10 Gkn Windsor Gmbh Vorrichtung zum plastifizieren und schmelzen von kunststoff mit einem beheizbaren plastifizierzylinder
JPS61100427A (ja) * 1984-10-22 1986-05-19 Jiyuken Kogyo:Kk スクリュ−ヘツド部における逆流防止装置
JPS61246031A (ja) * 1985-04-25 1986-11-01 Japan Steel Works Ltd:The 射出成形機の逆流防止装置
AT384577B (de) * 1985-07-19 1987-12-10 Engel Kg L Rueckstroemsperre fuer die plastifizierschnecke einer spritzgiessmaschine
US5112213A (en) * 1991-02-26 1992-05-12 Van Dorn Company Driven ring-type non-return valve for injection molding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241262A1 (de) * 2002-09-06 2004-03-18 Dr. Boy Gmbh & Co. Kg Schneckenkopf
DE10241262B4 (de) * 2002-09-06 2005-11-24 Dr. Boy Gmbh & Co. Kg Schneckenkopf mit Rückstromsperre

Also Published As

Publication number Publication date
ATE170446T1 (de) 1998-09-15
FR2718800A1 (fr) 1995-10-20
FR2718800B1 (fr) 1996-07-12
ES2123923T3 (es) 1999-01-16
US6227841B1 (en) 2001-05-08
DE69504394D1 (de) 1998-10-08
EP0677371B1 (de) 1998-09-02
CA2146813A1 (fr) 1995-10-20
EP0677371A1 (de) 1995-10-18

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: NETSTAL MACHINERY LTD., NAEFELS, CH

8381 Inventor (new situation)

Free format text: VIRON, ALAIN, PUISEAUX, FR

8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee