DE20117599U1 - Plastic extrusion device - Google Patents

Plastic extrusion device

Info

Publication number
DE20117599U1
DE20117599U1 DE20117599U DE20117599U DE20117599U1 DE 20117599 U1 DE20117599 U1 DE 20117599U1 DE 20117599 U DE20117599 U DE 20117599U DE 20117599 U DE20117599 U DE 20117599U DE 20117599 U1 DE20117599 U1 DE 20117599U1
Authority
DE
Germany
Prior art keywords
extrusion device
plastic extrusion
cylinder
return valve
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 - Lifetime
Application number
DE20117599U
Other languages
German (de)
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.)
3 D TECHNIK ZEHMEISTER GmbH
Original Assignee
3 D TECHNIK ZEHMEISTER GmbH
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 3 D TECHNIK ZEHMEISTER GmbH filed Critical 3 D TECHNIK ZEHMEISTER GmbH
Priority to DE20117599U priority Critical patent/DE20117599U1/en
Publication of DE20117599U1 publication Critical patent/DE20117599U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (1)

Kunststoff-Extrusionseinrichtung mit einem Zylinder (12) und einer Schnecke (20) mit einer Schneckenspitze (22), die einen im Querschnitt reduzierten Durchgangsabschnitt (44) aufweist, an dem eine hülsenförmige Rückstromsperre (46) im Zylinder (12) axial begrenzt beweglich geführt vorgesehen ist, dadurch gekennzeichnet, daß die Rückstromsperre (46) an ihrer Außenmantelfläche (58) mindestens zwei voneinander axial beabstandete Kolbenring-Dichtungselemente (62) aufweist.Plastic extrusion device with a cylinder ( 12 ) and a screw ( 20 ) with a screw tip ( 22 ) which has a passage section ( 44 ) with a reduced cross-section, on which a sleeve-shaped non-return valve ( 46 ) in the cylinder ( 12 ) is guided so as to be axially movable is provided, characterized in that the non-return valve ( 46 ) has at least two piston ring sealing elements ( 62 ) axially spaced apart from one another on its outer lateral surface ( 58 ).
DE20117599U 2001-02-24 2001-02-24 Plastic extrusion device Expired - Lifetime DE20117599U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20117599U DE20117599U1 (en) 2001-02-24 2001-02-24 Plastic extrusion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20117599U DE20117599U1 (en) 2001-02-24 2001-02-24 Plastic extrusion device
DE10109107 2001-02-24

Publications (1)

Publication Number Publication Date
DE20117599U1 true DE20117599U1 (en) 2002-02-21

Family

ID=26008621

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20117599U Expired - Lifetime DE20117599U1 (en) 2001-02-24 2001-02-24 Plastic extrusion device

Country Status (1)

Country Link
DE (1) DE20117599U1 (en)

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20020328

R150 Term of protection extended to 6 years

Effective date: 20031104

R151 Term of protection extended to 8 years

Effective date: 20061102

R152 Term of protection extended to 10 years

Effective date: 20081205

R071 Expiry of right