GB505699A - Improvements in or relating to injection moulding machines and feeding devices therefor - Google Patents

Improvements in or relating to injection moulding machines and feeding devices therefor

Info

Publication number
GB505699A
GB505699A GB4603/38A GB460338A GB505699A GB 505699 A GB505699 A GB 505699A GB 4603/38 A GB4603/38 A GB 4603/38A GB 460338 A GB460338 A GB 460338A GB 505699 A GB505699 A GB 505699A
Authority
GB
United Kingdom
Prior art keywords
switch
injection moulding
chamber
screw
plunger
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
GB4603/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB505699A publication Critical patent/GB505699A/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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • 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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • B29C2045/1875—Hoppers connected to a feed screw

Landscapes

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

Abstract

505,699. Injection moulding. LAWYER, I. B. Feb. 14, 1938, No. 4603. Convention date, April 26, 1937. [Class 87 (ii)] An injection moulding machine for plastic material has a feeding device for supplying material to the injector mechanism and a motor, controlled by time-responsive means, for operating the feeding device. The material in a hopper 38 is fed by a screw 39 down a vertical shoot 31 into the injection chamber 11 whence it is forced by the hydraulic plunger 18 through the nozzle 17 into the mould. The screw 39 is driven by an electric motor 47 which is started by a switch 29 and is automatically stopped after a predetermined time by a timing switch. The switch 29 is actuated by a cam 25 on the plunger 18 and the timing switch is set so that a slight excess of material is supplied to the injection chamber at each stroke of the plunger so that the chamber gradually fills with material. When this occurs the cam 25 fails to reach the switch 29 on a forward stroke and a feeding movement of the screw 39 is accordingly omitted. The chamber 11 may be heated by electricity or hot oil.
GB4603/38A 1937-04-26 1938-02-14 Improvements in or relating to injection moulding machines and feeding devices therefor Expired GB505699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US505699XA 1937-04-26 1937-04-26

Publications (1)

Publication Number Publication Date
GB505699A true GB505699A (en) 1939-05-16

Family

ID=21966012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4603/38A Expired GB505699A (en) 1937-04-26 1938-02-14 Improvements in or relating to injection moulding machines and feeding devices therefor

Country Status (1)

Country Link
GB (1) GB505699A (en)

Similar Documents

Publication Publication Date Title
FR2357359A1 (en) CLOSING DEVICE FOR THE DIE OF AN INJECTION MOLDING MACHINE
US1490162A (en) Machine for briquetting peat
GB1322736A (en) Apparatus for hot runner injection moulding
GB834723A (en) Apparatus for die casting and moulding
GB1111298A (en) Screw injector for plastic material
GB505699A (en) Improvements in or relating to injection moulding machines and feeding devices therefor
GB864179A (en) Injection moulding machine
GB1239838A (en) An injection moulding apparatus
GB1121661A (en) Improvements relating to the moulding of shoe soles
GB888448A (en) Improvements in injection moulding machines
GB521889A (en) Improvements in machines for moulding plastic material by injection
GB511764A (en) Improvements in and relating to injection moulding or die-casting machines
GB1062020A (en) Heating and feeding devices for plasticizing machines
GB1286888A (en) Injection device for injection moulding machine
JPS5567434A (en) Constant pressure controlling device
GB1220971A (en) An injection moulding machine mould runner sprue ejection device
GB646781A (en) Improvements in or relating to apparatus and method for injecting moldable material into a mold
GB1220707A (en) Moulding apparatus
GB855983A (en) Means for determining and controlling the filling of moulds in injection moulding
ES366136A1 (en) Improvements in machines for automatic injection moulding
GB927838A (en) A new or improved nozzle closure for injection moulding press
ES253204A3 (en) Improvements in the system of feeding of the machines of injection to increase its performance (Machine-translation by Google Translate, not legally binding)
FR2141426A1 (en) Injection moulding machine with independent injection - and dwell rams to allow continuous plasticization
GB582033A (en) Improvements in or relating to the moulding of plastic substances
GB911184A (en) Improvements in or relating to injector heads for injection-moulding machines