GB918481A - Improvements in and relating to machines or apparatus for the injection moulding of plastic material - Google Patents

Improvements in and relating to machines or apparatus for the injection moulding of plastic material

Info

Publication number
GB918481A
GB918481A GB3388660A GB3388660A GB918481A GB 918481 A GB918481 A GB 918481A GB 3388660 A GB3388660 A GB 3388660A GB 3388660 A GB3388660 A GB 3388660A GB 918481 A GB918481 A GB 918481A
Authority
GB
United Kingdom
Prior art keywords
sleeve
nozzle
injection
mould
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
GB3388660A
Inventor
William Francis Poyner
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.)
Foster Yates and Thom Ltd
Original Assignee
Foster Yates and Thom 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 Foster Yates and Thom Ltd filed Critical Foster Yates and Thom Ltd
Priority to GB3388660A priority Critical patent/GB918481A/en
Publication of GB918481A publication Critical patent/GB918481A/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
    • B29C45/20—Injection nozzles

Landscapes

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

Abstract

918,481. Injection moulding. FOSTER, YATES & THOM Ltd. Dec. 1, 1961 [Oct. 3, 1960], No. 33886/60. Class 87(2). An injection moulding machine consists of an injection cylinder 3 with a front plate 1, in front of which is a telescopic section comprising a fixed tubular part 4 connected to the front plate 1, a sleeve part 7 sliding on the part 4, and a nozzle part 8 sliding within the sleeve part 7. The nozzle is brought into sealing engagement with the mould orifice by means of fluid operated pistons 19, 20. The nozzle part 8 is kept in a forward position in the sleeve part 7 by the pressure of the plastic until it comes into contact with the mould, when the nozzle 8 is displaced rearwardly in the sleeve 7 and the channels 10 connect with the larger bore 11 allowing plastic to flow. As sleeve 7 slides forward over fixed portion 4 a cavity is left and when the nozzle 8 engages the mould and is displaced rearwardly this cavity is filled up. By suitable choice of diameters of parts 4 and 8, and the introduction of a valve in fixed part 4, a pressure can be built up inside sleeve 7 to assist injection. The apparatus may be used for high pressure short injection by plugging the end of the part 4 and providing radial apertures near the plugged end (see Fig. 3, not shown).
GB3388660A 1960-10-03 1960-10-03 Improvements in and relating to machines or apparatus for the injection moulding of plastic material Expired GB918481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3388660A GB918481A (en) 1960-10-03 1960-10-03 Improvements in and relating to machines or apparatus for the injection moulding of plastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3388660A GB918481A (en) 1960-10-03 1960-10-03 Improvements in and relating to machines or apparatus for the injection moulding of plastic material

Publications (1)

Publication Number Publication Date
GB918481A true GB918481A (en) 1963-02-13

Family

ID=10358730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3388660A Expired GB918481A (en) 1960-10-03 1960-10-03 Improvements in and relating to machines or apparatus for the injection moulding of plastic material

Country Status (1)

Country Link
GB (1) GB918481A (en)

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