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GB2018176A - Ejecting Die Castings - Google Patents

Ejecting Die Castings

Info

Publication number
GB2018176A
GB2018176A GB7911490A GB7911490A GB2018176A GB 2018176 A GB2018176 A GB 2018176A GB 7911490 A GB7911490 A GB 7911490A GB 7911490 A GB7911490 A GB 7911490A GB 2018176 A GB2018176 A GB 2018176A
Authority
GB
United Kingdom
Prior art keywords
article
die castings
cast
rotatable element
helical teeth
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.)
Granted
Application number
GB7911490A
Other versions
GB2018176B (en
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.)
Keystone International Holdings Corp
Tyco Flow Control Inc
Original Assignee
Keystone International Holdings Corp
Keystone International Inc
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 Keystone International Holdings Corp, Keystone International Inc filed Critical Keystone International Holdings Corp
Priority to GB7911490A priority Critical patent/GB2018176B/en
Publication of GB2018176A publication Critical patent/GB2018176A/en
Application granted granted Critical
Publication of GB2018176B publication Critical patent/GB2018176B/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
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls
    • 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
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2236—Equipment for loosening or ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2015/00—Gear wheels or similar articles with grooves or projections, e.g. control knobs
    • B29L2015/003—Gears

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Apparatus and method for producing a die cast article, such as a gear wheel having helical teeth, in which the die cavity 19 is defined by fixed elements 20, 21 and 23 and a rotatable element 17. On completion of the casting the cast article is ejected from the casting cavity by the combined action of push rods 22 and relative rotation between the fixed elements 20, 21 and 23 and rotatable element 17 so that the cast helical teeth of the article can be removed in an undamaged condition. <IMAGE>
GB7911490A 1978-04-08 1979-04-02 Ejecting die casting Expired GB2018176B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7911490A GB2018176B (en) 1978-04-08 1979-04-02 Ejecting die casting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1387678 1978-04-08
GB7911490A GB2018176B (en) 1978-04-08 1979-04-02 Ejecting die casting

Publications (2)

Publication Number Publication Date
GB2018176A true GB2018176A (en) 1979-10-17
GB2018176B GB2018176B (en) 1982-09-02

Family

ID=26250076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911490A Expired GB2018176B (en) 1978-04-08 1979-04-02 Ejecting die casting

Country Status (1)

Country Link
GB (1) GB2018176B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588503A1 (en) * 1985-10-16 1987-04-17 Peugeot Aciers Et Outillage HELICOIDAL DENTURE MOLDED GEAR ASSEMBLY
CN113524596A (en) * 2021-07-07 2021-10-22 宁波双林模具有限公司 High-precision large-helix-angle planetary helical gear demolding structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588503A1 (en) * 1985-10-16 1987-04-17 Peugeot Aciers Et Outillage HELICOIDAL DENTURE MOLDED GEAR ASSEMBLY
EP0223644A1 (en) * 1985-10-16 1987-05-27 Ecia - Equipements Et Composants Pour L'industrie Automobile Set of moulded gear wheels with helicoidal teeth
US5012691A (en) * 1985-10-16 1991-05-07 Ecia - Equipements Et Composants Pour L'industrie Automobile Cluster of molded gears with helical teeth
CN113524596A (en) * 2021-07-07 2021-10-22 宁波双林模具有限公司 High-precision large-helix-angle planetary helical gear demolding structure

Also Published As

Publication number Publication date
GB2018176B (en) 1982-09-02

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Legal Events

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