GB697273A - Improvements in injection-moulding and extension apparatus - Google Patents

Improvements in injection-moulding and extension apparatus

Info

Publication number
GB697273A
GB697273A GB24726/51A GB2472651A GB697273A GB 697273 A GB697273 A GB 697273A GB 24726/51 A GB24726/51 A GB 24726/51A GB 2472651 A GB2472651 A GB 2472651A GB 697273 A GB697273 A GB 697273A
Authority
GB
United Kingdom
Prior art keywords
screw
cylinder
retracts
oct
movements
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
GB24726/51A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB697273A publication Critical patent/GB697273A/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
    • 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
    • B29C2045/5004—Axially movable screw the forward screw end provided with an injection ram

Landscapes

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

Abstract

697,273. Injection-moulding and extrusion machines. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 23, 1951 [Oct. 27, 1950], No. 24726/51. Class 87 (ii) The rotating impelling screw 1 reciprocates axially, and its cylindrical forward end la is smooth, i.e. non- threaded, and slides through a bushing 14 at the forward end of cylinder 3. The screw is rotated by electric motor 23 and worm gearing 24, 25, and is reciprocated by a fluid-pressure piston 28, the splined shaft 19 sliding through the gear 25. A chamber 7 in cylinder 3 facilitates mixing of the plastic material (cellulose derivatives, vinyls, polystyrene). Cooling passages 17, 18 are formed in cylinder 2. Heating elements 15, 16 surround cylinders 2, 3. In operation, the screw is rotated whilst it is in the retracted position shown, thereby feeding material into chamber 7 and bore 6 of cylinder 3. Then the screw is advanced to the left to force material through nozzle 8. Then the screw, still rotating, retracts, feeding . material forward as it retracts. These movements may be correlated with movements of moulds 10.
GB24726/51A 1950-10-27 1951-10-23 Improvements in injection-moulding and extension apparatus Expired GB697273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US697273XA 1950-10-27 1950-10-27

Publications (1)

Publication Number Publication Date
GB697273A true GB697273A (en) 1953-09-16

Family

ID=22090836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24726/51A Expired GB697273A (en) 1950-10-27 1951-10-23 Improvements in injection-moulding and extension apparatus

Country Status (1)

Country Link
GB (1) GB697273A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103011B (en) * 1955-11-23 1961-03-23 Raymond Mille Injection molding machine for processing thermoplastics or elastomers
DE1296380B (en) * 1966-02-11 1969-05-29 Geng & Co Gmbh Kg Maschf Device for producing molded bodies from thermosetting plastics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1103011B (en) * 1955-11-23 1961-03-23 Raymond Mille Injection molding machine for processing thermoplastics or elastomers
DE1296380B (en) * 1966-02-11 1969-05-29 Geng & Co Gmbh Kg Maschf Device for producing molded bodies from thermosetting plastics

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