GB1352214A - Worm-type injection moulding unit for the processing of thermo plastic plastics materials - Google Patents

Worm-type injection moulding unit for the processing of thermo plastic plastics materials

Info

Publication number
GB1352214A
GB1352214A GB3385571A GB3385571A GB1352214A GB 1352214 A GB1352214 A GB 1352214A GB 3385571 A GB3385571 A GB 3385571A GB 3385571 A GB3385571 A GB 3385571A GB 1352214 A GB1352214 A GB 1352214A
Authority
GB
United Kingdom
Prior art keywords
worm
piston
valve
chamber
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
GB3385571A
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.)
Mannesmann Meer AG
Original Assignee
Mannesmann Meer 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 Mannesmann Meer AG filed Critical Mannesmann Meer AG
Publication of GB1352214A publication Critical patent/GB1352214A/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
    • B29C45/5008—Drive means therefor

Landscapes

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

Abstract

1352214 Injection moulding MANNESMANN-MEER AG 19 July 1971 [30 July 1970] 33855/71 Heading B5A A plasticizing worm 1 rotatable by a drive 3 is axially reciprocable by a hydro-pneumatic system cylinder chamber 6 divided by a free piston 7 into an hydraulic chamber connected to a pump 11 via relief valve 9 and entered by a piston member 4 attached to the rear of the screw, and a pneumatic chamber connected via a shut-off valve 10 to an accumulator 8. The hydraulic pump 11 is activated to fill chamber 6 and move piston 7 rearwardly to displace gas into accumulator 8. The valve 10 is then closed and pump 11 stopped. The worm 1 is rotated, with the injection nozzle closed, to fill the injector and drive the worm and piston 4 rearwardly displacing hydraulic fluid from chamber 6 through relief valve 9. The rotary drive is stopped and the injection nozzle and valve 10 opened to allow the compressed gas to move piston 4 forward and inject the melt.
GB3385571A 1970-07-30 1971-07-19 Worm-type injection moulding unit for the processing of thermo plastic plastics materials Expired GB1352214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702038696 DE2038696C3 (en) 1970-07-30 1970-07-30 Injection molding unit for processing thermoplastics

Publications (1)

Publication Number Publication Date
GB1352214A true GB1352214A (en) 1974-05-08

Family

ID=5778838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3385571A Expired GB1352214A (en) 1970-07-30 1971-07-19 Worm-type injection moulding unit for the processing of thermo plastic plastics materials

Country Status (3)

Country Link
DE (1) DE2038696C3 (en)
FR (1) FR2100155A5 (en)
GB (1) GB1352214A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1377530A (en) * 1972-05-30 1974-12-18 Bone Cravens Ltd Injection moulding

Also Published As

Publication number Publication date
DE2038696A1 (en) 1972-02-03
DE2038696C3 (en) 1973-09-13
DE2038696B2 (en) 1973-02-22
FR2100155A5 (en) 1972-03-17

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed