GB1505013A - Backflow seal for an injection moulding machine - Google Patents

Backflow seal for an injection moulding machine

Info

Publication number
GB1505013A
GB1505013A GB1661476A GB1661476A GB1505013A GB 1505013 A GB1505013 A GB 1505013A GB 1661476 A GB1661476 A GB 1661476A GB 1661476 A GB1661476 A GB 1661476A GB 1505013 A GB1505013 A GB 1505013A
Authority
GB
United Kingdom
Prior art keywords
head
injection
screw
ring
injection moulding
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
Application number
GB1661476A
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 GB1505013A publication Critical patent/GB1505013A/en
Expired 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)
GB1661476A 1975-04-24 1976-04-23 Backflow seal for an injection moulding machine Expired GB1505013A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752518219 DE2518219A1 (de) 1975-04-24 1975-04-24 Rueckstroemsperre an schneckenspritzgiessmaschinen

Publications (1)

Publication Number Publication Date
GB1505013A true GB1505013A (en) 1978-03-22

Family

ID=5944901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1661476A Expired GB1505013A (en) 1975-04-24 1976-04-23 Backflow seal for an injection moulding machine

Country Status (4)

Country Link
DE (1) DE2518219A1 (nl)
FR (1) FR2308494A1 (nl)
GB (1) GB1505013A (nl)
NL (1) NL7604007A (nl)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857867B2 (en) 2002-03-09 2005-02-22 Demag Ergotech Gmbh Backflow prevention device
CN110091480A (zh) * 2019-05-31 2019-08-06 徐锡东 一种注塑机用螺杆止逆环机构
CN113334713A (zh) * 2021-04-21 2021-09-03 周加友 注塑模具用防物料回流缺料的推进装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942320A1 (de) * 1979-10-19 1981-05-07 Mannesmann Demag Kunstofftechnik Zweigniederlassung der Mannesmann Demag AG, 8500 Nürnberg Rueckstroemsperre an schnecken-spritzgiessmaschinen
SE8205560L (sv) * 1982-09-29 1984-03-30 Stig Baumer Spets till plastificeringsskruv
DE4204537A1 (de) * 1992-02-15 1993-08-19 Boy Gmbh Dr Schneckenanordnung fuer eine spritzgiessmaschine
DE19619730C2 (de) * 1995-05-16 1999-01-28 Engel Gmbh Maschbau Einspritzeinheit einer Spritzgießmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857867B2 (en) 2002-03-09 2005-02-22 Demag Ergotech Gmbh Backflow prevention device
CN110091480A (zh) * 2019-05-31 2019-08-06 徐锡东 一种注塑机用螺杆止逆环机构
CN113334713A (zh) * 2021-04-21 2021-09-03 周加友 注塑模具用防物料回流缺料的推进装置

Also Published As

Publication number Publication date
NL7604007A (nl) 1976-10-26
DE2518219A1 (de) 1976-11-04
FR2308494B3 (nl) 1979-01-12
FR2308494A1 (fr) 1976-11-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee