FR2433409A1 - Verrouillage anti-retour pour machines pour moulage par injection a vis - Google Patents

Verrouillage anti-retour pour machines pour moulage par injection a vis

Info

Publication number
FR2433409A1
FR2433409A1 FR7920904A FR7920904A FR2433409A1 FR 2433409 A1 FR2433409 A1 FR 2433409A1 FR 7920904 A FR7920904 A FR 7920904A FR 7920904 A FR7920904 A FR 7920904A FR 2433409 A1 FR2433409 A1 FR 2433409A1
Authority
FR
France
Prior art keywords
machines
injection molding
lock
return lock
screw injection
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.)
Withdrawn
Application number
FR7920904A
Other languages
English (en)
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.)
Demag Kunststofftechnik Zweigniederlassung der Demag AG
Original Assignee
Demag Kunststofftechnik Zweigniederlassung der Demag AG
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 Demag Kunststofftechnik Zweigniederlassung der Demag AG filed Critical Demag Kunststofftechnik Zweigniederlassung der Demag AG
Publication of FR2433409A1 publication Critical patent/FR2433409A1/fr
Withdrawn legal-status Critical Current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

Landscapes

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

Abstract

Le verrou anti-retour a un corps 15 en forme de champignon qui est guidé de façon étanche par son fût dans un alésage axial 14 prévu côte frontal de la tête de vis et qui se déplace entre deux butées. En position de butée avant, la tête du verrou libère des passages Il dans la tête de vis pour le matériau plastique; en position de butée arrière, ces passages 11 sont fermés par la tête 17 du verrou.
FR7920904A 1978-08-18 1979-08-17 Verrouillage anti-retour pour machines pour moulage par injection a vis Withdrawn FR2433409A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782836165 DE2836165A1 (de) 1978-08-18 1978-08-18 Rueckstroemsperre fuer schnecken-spritzgiessmaschinen

Publications (1)

Publication Number Publication Date
FR2433409A1 true FR2433409A1 (fr) 1980-03-14

Family

ID=6047349

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7920904A Withdrawn FR2433409A1 (fr) 1978-08-18 1979-08-17 Verrouillage anti-retour pour machines pour moulage par injection a vis

Country Status (4)

Country Link
DE (1) DE2836165A1 (fr)
FR (1) FR2433409A1 (fr)
GB (1) GB2028216A (fr)
IT (1) IT7950007A0 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240872C2 (de) * 1982-11-05 1986-10-09 Erich 7141 Steinheim Blattert Rückstromsperre für eine Schnecken-Spritzgießmaschine
US4850851A (en) * 1988-01-07 1989-07-25 Cincinnati Milacron, Inc. Anti-backflow valve for injection molding machines
DE3814673C2 (de) * 1988-04-30 1994-05-05 Krauss Maffei Ag Rückstromsperre für Spritzgießmaschinen
US5044926A (en) * 1990-06-25 1991-09-03 Cincinnati Milacron Inc. Anti-backflow valve for injection molding machines
US5258158A (en) * 1991-05-13 1993-11-02 Dray Robert F Positive-type non-return valve and method of using valve
US5164207A (en) * 1991-11-08 1992-11-17 Spirex Corporation Plastic extruder with automatic shut-off valve
CN110509493B (zh) * 2019-09-10 2021-10-29 张弛 一种注塑机防漏油装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201039B (de) * 1964-01-21 1965-09-16 Reifenhaeuser Kg Mit einem axial verschiebbaren Ringkoerper versehene Rueckstausperre am Schneckenkopf von Schneckenspritzgiessmaschinen fuer thermo-plastische Kunststoffe
DE2515530A1 (de) * 1975-04-09 1976-10-21 Froendenberger Masch App Gmbh Plastifizierzylinder fuer kunststoff-spritzgussmaschinen
FR2363429A1 (fr) * 1976-09-07 1978-03-31 Manceau Marcel Tete a clapet-obturateur pour vis de machine d'injection de matiere plastique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201039B (de) * 1964-01-21 1965-09-16 Reifenhaeuser Kg Mit einem axial verschiebbaren Ringkoerper versehene Rueckstausperre am Schneckenkopf von Schneckenspritzgiessmaschinen fuer thermo-plastische Kunststoffe
DE2515530A1 (de) * 1975-04-09 1976-10-21 Froendenberger Masch App Gmbh Plastifizierzylinder fuer kunststoff-spritzgussmaschinen
FR2363429A1 (fr) * 1976-09-07 1978-03-31 Manceau Marcel Tete a clapet-obturateur pour vis de machine d'injection de matiere plastique

Also Published As

Publication number Publication date
GB2028216A (en) 1980-03-05
DE2836165A1 (de) 1980-03-06
IT7950007A0 (it) 1979-08-08

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Legal Events

Date Code Title Description
ST Notification of lapse