GB704324A - Improvements in or relating to machines for injecting molten materials into a mould or die - Google Patents

Improvements in or relating to machines for injecting molten materials into a mould or die

Info

Publication number
GB704324A
GB704324A GB1268450A GB1268450A GB704324A GB 704324 A GB704324 A GB 704324A GB 1268450 A GB1268450 A GB 1268450A GB 1268450 A GB1268450 A GB 1268450A GB 704324 A GB704324 A GB 704324A
Authority
GB
United Kingdom
Prior art keywords
nozzle
wax
container
mould
chamber
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
GB1268450A
Inventor
Philip Hector Lawrence
Charles Ernest Barkworth
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.)
Birmingham Small Arms Co Ltd
Original Assignee
Birmingham Small Arms 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 Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Priority to GB1268450A priority Critical patent/GB704324A/en
Publication of GB704324A publication Critical patent/GB704324A/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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
    • B29C67/241—Moulding wax
    • 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
    • B29C45/03—Injection moulding apparatus
    • 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
    • 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
    • B29C45/72—Heating or cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Closures For Containers (AREA)

Abstract

704,324. Injection-moulding molten wax &c. BIRMINGHAM SMALL ARMS CO., Ltd. Aug, 20, 1951 [May 20, 1950], No. 12684/50. Class 87 (2) Molten wax or other material is forced by compressed air from a container 7, Figs. 2, 2A, through a nozzle 15 into a mould, and then a follow-up pressure greater than the air pressure is applied to, the material in the mould by a pneumatically-operated piston 25. The wax container 7 is supported within an oil chamber 1, the oil surrounding the container and being heated by electrical elements 11, 11a. Oil-filled tubes 8 extend through the container. The upper end of the nozzle is located within the container and wax enters the nozzle through a pipe 31.. A rotatable manuallycontrolled spring-seated valve 33 is mounted athwart the nozzle'passage 49, and has a branch passage 59 which prevents vacuum formation when (the valve being closed) piston 25 is raised, ascent of the piston sucking in wax through passages 62, 61, 49a and 59. The nozzle is heated by a coil 17. Compressed air is supplied to the container through pipe 53.. The container is filled through an aperture closed oy a hinged door, Fig. 3 (not shown. In operation the mould is mounted on a table, Fig. 1 (not shown) and raised by pneumatic or hydraulic pressure until it engages the end 21 of the nozzle. Valve &3 is then opened, the compressed air (at 80 pounds p.s.i.) forces wax into the mould, piston 25 is lowered to apply a pressure of up to 1,500 pounds p.s.i., the valve is closed and the piston raised. In a modification, Fig. 5, the nozzle 69 points upwards and the mould is Clamped thereon by means of a plate 91 adjustably mounted on a beam 93, the plate being carried by a manually-turned stem 92 threaded in beam 93. The nozzle 69 is enclosed within a chamber 73 which communicates with the wax container 71 by way of pipe 77. The cylinder which operates the pneumatic piston 25 is secured to the base of chamber 73 (and is. immersed in the wax). An air bleed passage 79 extends from the interior of chamber 73 to the atmosphere, and filling of the mould is indicated when wax exudes from this passage into the atmosphere. The valve 85 is outside the oil' chamber 81. In a further modification Fig. 6 (not shown) the nozzle points downwardly and the valve is outside the oil' chamber.
GB1268450A 1950-05-20 1950-05-20 Improvements in or relating to machines for injecting molten materials into a mould or die Expired GB704324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1268450A GB704324A (en) 1950-05-20 1950-05-20 Improvements in or relating to machines for injecting molten materials into a mould or die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1268450A GB704324A (en) 1950-05-20 1950-05-20 Improvements in or relating to machines for injecting molten materials into a mould or die

Publications (1)

Publication Number Publication Date
GB704324A true GB704324A (en) 1954-02-17

Family

ID=10009232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1268450A Expired GB704324A (en) 1950-05-20 1950-05-20 Improvements in or relating to machines for injecting molten materials into a mould or die

Country Status (1)

Country Link
GB (1) GB704324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420524A (en) * 2004-11-27 2006-05-31 Symons Sibson & Co Ltd Apparatus for providing meltable material in a molten state to a mould
WO2021052596A1 (en) * 2019-09-19 2021-03-25 Adultimum Ag Method of forming a device of composite material, a pattern, a device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420524A (en) * 2004-11-27 2006-05-31 Symons Sibson & Co Ltd Apparatus for providing meltable material in a molten state to a mould
WO2021052596A1 (en) * 2019-09-19 2021-03-25 Adultimum Ag Method of forming a device of composite material, a pattern, a device
JP2022552623A (en) * 2019-09-19 2022-12-19 アデュールティムム アクチェンゲゼルシャフト Methods, patterns and devices for forming composite devices

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