GB1057267A - System for removing articles from very high-pressure moulds - Google Patents

System for removing articles from very high-pressure moulds

Info

Publication number
GB1057267A
GB1057267A GB1826365A GB1826365A GB1057267A GB 1057267 A GB1057267 A GB 1057267A GB 1826365 A GB1826365 A GB 1826365A GB 1826365 A GB1826365 A GB 1826365A GB 1057267 A GB1057267 A GB 1057267A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
see figs
pressure
matrix
article
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
GB1826365A
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of GB1057267A publication Critical patent/GB1057267A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B22C7/067—Ejector elements
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/442—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with mechanical ejector or drive means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/32—Discharging presses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Food-Manufacturing Devices (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Casting Devices For Molds (AREA)

Abstract

1,057,267. Article ejecting mechanism. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 30, 1965 [May 5, 1964], No. 18263/65. Heading B5A. The base of a mould for use in compression moulding at high pressures consists of a resilient metal diaphragm, of e.g. steel, which is forced downwards against a suitable stop during the pressing operation but which springs back to its original position after release of the pressure, thus freeing the article from the mould walls. In the embodiment shown in the Figure the diaphragm 2 is machined from a steel matrix 1 and is restricted from below by a plinth 3 bolted to the matrix. In alternative embodiments the upward movement of the diaphragm is augmented by a pressure fluid, e.g. oil, introduced thereunder (see Figs. 3-6, not shown) and, if required, a safety means may be incorporated (see Figs. 7 and 8, not shown) by which the fluid may be bled off after the diaphragm has reached a certain point so that any excessive forcing of the diaphragm upwards, and consequent overstraining thereof, is avoided.
GB1826365A 1964-05-05 1965-04-30 System for removing articles from very high-pressure moulds Expired GB1057267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR973433A FR1403701A (en) 1964-05-05 1964-05-05 Extraction device for very high pressure molds

Publications (1)

Publication Number Publication Date
GB1057267A true GB1057267A (en) 1967-02-01

Family

ID=8829372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1826365A Expired GB1057267A (en) 1964-05-05 1965-04-30 System for removing articles from very high-pressure moulds

Country Status (8)

Country Link
BE (1) BE662573A (en)
CH (1) CH446699A (en)
DE (1) DE1256365B (en)
ES (1) ES312577A1 (en)
FR (1) FR1403701A (en)
GB (1) GB1057267A (en)
LU (1) LU48509A1 (en)
NL (1) NL6505622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588660A1 (en) * 1992-09-18 1994-03-23 JOHNSON & JOHNSON VISION PRODUCTS, INC. Laser assisted demolding of ophthalmic lenses
DE19824463A1 (en) * 1998-05-30 1999-12-02 Stefan Pfaff Werkzeug Und Form Injection mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588660A1 (en) * 1992-09-18 1994-03-23 JOHNSON & JOHNSON VISION PRODUCTS, INC. Laser assisted demolding of ophthalmic lenses
DE19824463A1 (en) * 1998-05-30 1999-12-02 Stefan Pfaff Werkzeug Und Form Injection mold
EP0962295A2 (en) * 1998-05-30 1999-12-08 STEFAN PFAFF WERKZEUG- UND FORMENBAU GmbH & CO. KG Injection mould
EP0962295A3 (en) * 1998-05-30 2001-11-14 STEFAN PFAFF WERKZEUG- UND FORMENBAU GmbH & CO. KG Injection mould

Also Published As

Publication number Publication date
LU48509A1 (en) 1965-07-05
BE662573A (en)
DE1256365B (en) 1967-12-14
CH446699A (en) 1967-11-15
ES312577A1 (en) 1966-05-16
FR1403701A (en) 1965-06-25
NL6505622A (en) 1965-11-08

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