GB1432762A - Die casting or injection moulding method and apparatus - Google Patents

Die casting or injection moulding method and apparatus

Info

Publication number
GB1432762A
GB1432762A GB626072A GB626072A GB1432762A GB 1432762 A GB1432762 A GB 1432762A GB 626072 A GB626072 A GB 626072A GB 626072 A GB626072 A GB 626072A GB 1432762 A GB1432762 A GB 1432762A
Authority
GB
United Kingdom
Prior art keywords
core
injection moulding
temperature
signal
die
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
GB626072A
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.)
BNF Metals Technology Centre
Original Assignee
BNF Metals Technology Centre
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 BNF Metals Technology Centre filed Critical BNF Metals Technology Centre
Priority to GB626072A priority Critical patent/GB1432762A/en
Publication of GB1432762A publication Critical patent/GB1432762A/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
    • B29C45/76—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment

Landscapes

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

Abstract

1432762 Injection moulding machines BNF METALS TECHNOLOGY CENTRE 8 May 1973 [10 Feb 1972] 6260/72 Heading B5A [Also in Division B3] In a die casting or injection moulding process in which at least one core 10 is removably located in the die cavity, means 14 senses when the temperature of the cast material falls to a predetermined value and generates a signal, this signal being used to initiate removal of the core from the cavity. The signal may also be used to initiated the die opening sequence after a set time delay. Alternatively, the core withdrawal movement may be used to trigger a limit switch which initiates die opening directly or after a set time delay. In another embodiment a separate sensed temperature is used to initiate die opening. More than one temperature sensor may be provided. The circuit for controlling operation of the machine is similar to that disclosed in Specification 1,288,037 and is such that initiation of the core removal step takes place only if the temperature sensed by the means 14 rises above and then falls below the said predetermined value. Alternatively, a timing device 15 may be used to prevent premature removal of the core. Reference has been directed by the Comptroller to Specification 1,288,037.
GB626072A 1972-02-10 1972-02-10 Die casting or injection moulding method and apparatus Expired GB1432762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB626072A GB1432762A (en) 1972-02-10 1972-02-10 Die casting or injection moulding method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB626072A GB1432762A (en) 1972-02-10 1972-02-10 Die casting or injection moulding method and apparatus

Publications (1)

Publication Number Publication Date
GB1432762A true GB1432762A (en) 1976-04-22

Family

ID=9811299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB626072A Expired GB1432762A (en) 1972-02-10 1972-02-10 Die casting or injection moulding method and apparatus

Country Status (1)

Country Link
GB (1) GB1432762A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee