FR2383772A1 - Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould - Google Patents

Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould

Info

Publication number
FR2383772A1
FR2383772A1 FR7708204A FR7708204A FR2383772A1 FR 2383772 A1 FR2383772 A1 FR 2383772A1 FR 7708204 A FR7708204 A FR 7708204A FR 7708204 A FR7708204 A FR 7708204A FR 2383772 A1 FR2383772 A1 FR 2383772A1
Authority
FR
France
Prior art keywords
mould
transition chamber
injection
piston
injection unit
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.)
Granted
Application number
FR7708204A
Other languages
French (fr)
Other versions
FR2383772B1 (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.)
Statni Vyzkumny Ustav Materialu
Original Assignee
Statni Vyzkumny Ustav Materialu
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 Statni Vyzkumny Ustav Materialu filed Critical Statni Vyzkumny Ustav Materialu
Priority to FR7708204A priority Critical patent/FR2383772A1/en
Publication of FR2383772A1 publication Critical patent/FR2383772A1/en
Application granted granted Critical
Publication of FR2383772B1 publication Critical patent/FR2383772B1/fr
Granted 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • B29C44/424—Details of machines
    • B29C44/425—Valve or nozzle constructions; Details of injection 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
    • 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
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/54—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston and plasticising screw

Landscapes

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

Abstract

A injection moulding assembly for plastics ro rubber comprises an injection unit and a closure unit containing the mould. The barrel or cylinder of the injection unit and the mould communicate via a transition chamber, contg. a piston; the axis of this piston is different from that of the injection unit cylinder. The driving cylinder of the injection unit is connected hydraulically to the driving cylinder of the transition chamber piston. Specifically the transition chamber is contained within a bridge mounded on a fixed clamping plate or is mounted on the machine frame in communication with the mould via an aperture in the fixed clamping plate with a communicating duct. Used for a wide range of injection moulding both at low and high pressure, for small or large components, and for dense or foam plastics or rubber. Appts. can be assembled from a conventional injection machine and conventional mould by the addition of the extra transition chamber between them.
FR7708204A 1977-03-18 1977-03-18 Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould Granted FR2383772A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7708204A FR2383772A1 (en) 1977-03-18 1977-03-18 Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7708204A FR2383772A1 (en) 1977-03-18 1977-03-18 Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould

Publications (2)

Publication Number Publication Date
FR2383772A1 true FR2383772A1 (en) 1978-10-13
FR2383772B1 FR2383772B1 (en) 1982-04-09

Family

ID=9188307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7708204A Granted FR2383772A1 (en) 1977-03-18 1977-03-18 Large plastics mouldings injected through transition chamber - containing driving pistons for rapid feed into mould

Country Status (1)

Country Link
FR (1) FR2383772A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943412A2 (en) * 1998-03-19 1999-09-22 Husky Injection Molding Systems Ltd. Method and system for reducing polymer degradation products in two stage injection molding machines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322883A (en) * 1962-02-13 1963-04-05 Foster Grant Co Inc Cellular material injection molding process
US3218375A (en) * 1962-12-21 1965-11-16 Hardwick Eugene Russell Molding of foam plastic articles
FR1553319A (en) * 1968-01-29 1969-01-10
US3611503A (en) * 1968-04-18 1971-10-12 Netstal Ag Maschf Giesserei Injection molding apparatus for plastic materials
US3674401A (en) * 1969-12-22 1972-07-04 Usm Corp Apparatus for injection molding articles of foam material
DE2549813B1 (en) * 1975-11-06 1976-11-18 Werner & Pfleiderer PISTON INJECTION MOLDING PRESS FOR MANUFACTURING RUBBER SHAPED BODIES

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1322883A (en) * 1962-02-13 1963-04-05 Foster Grant Co Inc Cellular material injection molding process
US3218375A (en) * 1962-12-21 1965-11-16 Hardwick Eugene Russell Molding of foam plastic articles
FR1553319A (en) * 1968-01-29 1969-01-10
US3611503A (en) * 1968-04-18 1971-10-12 Netstal Ag Maschf Giesserei Injection molding apparatus for plastic materials
US3674401A (en) * 1969-12-22 1972-07-04 Usm Corp Apparatus for injection molding articles of foam material
DE2549813B1 (en) * 1975-11-06 1976-11-18 Werner & Pfleiderer PISTON INJECTION MOLDING PRESS FOR MANUFACTURING RUBBER SHAPED BODIES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943412A2 (en) * 1998-03-19 1999-09-22 Husky Injection Molding Systems Ltd. Method and system for reducing polymer degradation products in two stage injection molding machines
EP0943412A3 (en) * 1998-03-19 2000-12-20 Husky Injection Molding Systems Ltd. Method and system for reducing polymer degradation products in two stage injection molding machines

Also Published As

Publication number Publication date
FR2383772B1 (en) 1982-04-09

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Legal Events

Date Code Title Description
ST Notification of lapse