GB978127A - Improvements in or relating to moulding presses - Google Patents

Improvements in or relating to moulding presses

Info

Publication number
GB978127A
GB978127A GB3631661A GB3631661A GB978127A GB 978127 A GB978127 A GB 978127A GB 3631661 A GB3631661 A GB 3631661A GB 3631661 A GB3631661 A GB 3631661A GB 978127 A GB978127 A GB 978127A
Authority
GB
United Kingdom
Prior art keywords
plunger
piston
mould
press
platen
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
GB3631661A
Inventor
Cyril Daniel Watson
Stephen Herbert Offer
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3631661A priority Critical patent/GB978127A/en
Publication of GB978127A publication Critical patent/GB978127A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/06—Stamping using rigid devices or tools having relatively-movable die parts
    • 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
    • B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping 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
    • B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
    • B29C45/706—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices using a single drive system providing both the mould closing and clamping pressure and also the injection pressure, e.g. using a fixed injection piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)

Abstract

978,127. Transfer moulding press. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 10, 1963 [Oct. 10, 1961], No. 36316/61. Heading B5A. [Also in Division B3] A single-ram moulding press has between its two platens, a mould, a plunger for driving material under pressure into the mould, a piston around the plunger, and a fluid-pressuretransmitting means held against the ends of the piston and plunger remote from the mould, whereby when the press is loaded with material between the plunger and the mould and one platen is driven towards the other, the piston advances and deforms the pressure-transmitting means which forces the plunger to drive the material into the mould. In the first example, Fig. 1, the invention is applied to a transfer moulding press comprising platens 1 and 2, mould parts 4 and 5, a transfer pot 10 and a plunger 9 within an annular piston 6. A deformable bag 7 containing an incompressible fluid is located against the plunger and piston by a plate 8. When the ram 3 moves the platen 2 upwardly the piston 6 deforms the bag 7 the centre part of which pushes the plunger downwardly into the transfer pot 10. In another example the invention is applied to a metal draw press. In a final example two annular pistons having a last motion interconnection are provided. The outet piston moves during part of the platen stroke before picking up the inner piston to increase the speed of plunger movement.
GB3631661A 1961-10-10 1961-10-10 Improvements in or relating to moulding presses Expired GB978127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3631661A GB978127A (en) 1961-10-10 1961-10-10 Improvements in or relating to moulding presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3631661A GB978127A (en) 1961-10-10 1961-10-10 Improvements in or relating to moulding presses

Publications (1)

Publication Number Publication Date
GB978127A true GB978127A (en) 1964-12-16

Family

ID=10387017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3631661A Expired GB978127A (en) 1961-10-10 1961-10-10 Improvements in or relating to moulding presses

Country Status (1)

Country Link
GB (1) GB978127A (en)

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