GB669290A - Improved apparatus for opening moulds - Google Patents

Improved apparatus for opening moulds

Info

Publication number
GB669290A
GB669290A GB786149A GB786149A GB669290A GB 669290 A GB669290 A GB 669290A GB 786149 A GB786149 A GB 786149A GB 786149 A GB786149 A GB 786149A GB 669290 A GB669290 A GB 669290A
Authority
GB
United Kingdom
Prior art keywords
mould
rod
halves
magnet
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
GB786149A
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB786149A priority Critical patent/GB669290A/en
Publication of GB669290A publication Critical patent/GB669290A/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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from the mould
    • 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
    • B22D17/26—Mechanisms or devices for locking or opening dies
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor

Landscapes

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

Abstract

669,290. Electromagnets. DUNLOP RUBBER CO., Ltd., and HOLROYD, E. Feb. 22, 1950 [March 23, 1949], No. 7861/49. Class 35. [Also in Group V] A filled mould having separable parts is placed on an electromagnet 9 secured to a hydraulic piston-rod 3, and the rod is then raised to clamp the mould between the magnet 9 and another electromagnet 10 fixed to pillars 18. The current to the magnets is then switched on. One part of the mould sticks to magnet 9 and the other to magnet 10. The rod 3 is then lowered, tearing the two parts of the mould apart. When a transfer mould is to be opened in this way (the transfer mould comprising two halves and a plunger which fits into a pressure chamber in one half), first the two halves are separated as described above, whereby the sprue is broken, then the rod is raised to close the mould halves, the halves are secured together by U-shaped clamps which fit over lugs on the mould sides, and finally the rod is lowered, whereby the plunger is separated from the pressure chamber. If the article in the mould has accessible metal inserts, the article can be stripped from the mould by this method. The apparatus, including an oil-pressure-supply unit 6 and con-. trol valve 7, is mounted on a wheeled frame 19 having a towing-bar 26.
GB786149A 1949-03-23 1949-03-23 Improved apparatus for opening moulds Expired GB669290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB786149A GB669290A (en) 1949-03-23 1949-03-23 Improved apparatus for opening moulds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB786149A GB669290A (en) 1949-03-23 1949-03-23 Improved apparatus for opening moulds

Publications (1)

Publication Number Publication Date
GB669290A true GB669290A (en) 1952-04-02

Family

ID=9841198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB786149A Expired GB669290A (en) 1949-03-23 1949-03-23 Improved apparatus for opening moulds

Country Status (1)

Country Link
GB (1) GB669290A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843038A (en) * 1954-01-06 1958-07-15 Robert O Manspeaker Bakery apparatus and method
US20200038946A1 (en) * 2015-11-03 2020-02-06 Fujian Rheomet Light Metal Co., Ltd. Aluminum alloy semi-solid molding method and device
CN113799315A (en) * 2021-08-30 2021-12-17 株洲时代新材料科技股份有限公司 Electric control locking method and device for polyurethane microporous elastic base plate production mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843038A (en) * 1954-01-06 1958-07-15 Robert O Manspeaker Bakery apparatus and method
US20200038946A1 (en) * 2015-11-03 2020-02-06 Fujian Rheomet Light Metal Co., Ltd. Aluminum alloy semi-solid molding method and device
CN113799315A (en) * 2021-08-30 2021-12-17 株洲时代新材料科技股份有限公司 Electric control locking method and device for polyurethane microporous elastic base plate production mold
CN113799315B (en) * 2021-08-30 2023-06-02 株洲时代新材料科技股份有限公司 Electric control locking method and device for polyurethane microporous elastic backing plate production die

Similar Documents

Publication Publication Date Title
JPS5772766A (en) Molding method by vacuum die casting
GB1118024A (en) Casting apparatus
GB669290A (en) Improved apparatus for opening moulds
GB1203641A (en) Improvements in or relating to apparatus for pressure diecasting
ES2195915T3 (en) PROCEDURE AND INJECTION MOLDING DEVICE WITH REMOVABLE GRIP UNIT IMPROVED WITH HORIZONTAL CLOSURE MATRICES.
GB1177705A (en) Injection Moulding
US2958104A (en) Vacuum die casting process and apparatus
GB724731A (en) Method of and apparatus for making a sand core or mold in which sand is blown into amold core box
GB983988A (en) Machine and method for moulding heat-curable articles
US2928149A (en) Apparatus and method for curing a formed granular article
GB1535727A (en) Machines for injection moulding and for die-casting
ES486359A1 (en) A rotary head press for injection molding
GB866928A (en) Improvements in or relating to induction furnace arrangements
GB625185A (en) Die-casting apparatus
GB809861A (en) Improvements in or relating to apparatus for producing soil blocks
JPS6431562A (en) Vacuum die-casting apparatus
GB780126A (en) Method of and apparatus for die casting under vacuum
GB1233860A (en) Improvements in devices for extracting injection moulding residues
ES344429A1 (en) Procedure for vacuuming the pressure of metals or other materials, especially at the pressure of a compressed gas. (Machine-translation by Google Translate, not legally binding)
GB925414A (en) Die casting and injection moulding machines
GB750981A (en) Apparatus for the injection of molten thermoplastic material into moulds
GB875705A (en) Concrete block moulding machine with displaceable mould-filling box
GB971004A (en) Method and device for compacting a pressure-compactible particulate material
JPS57206562A (en) Method and device for low pressure casting
JPS5764532A (en) Device for controlling mold opening and closing stroke