GB1214683A - Hydraulic releasable stop device for presses - Google Patents

Hydraulic releasable stop device for presses

Info

Publication number
GB1214683A
GB1214683A GB9851/68A GB985168A GB1214683A GB 1214683 A GB1214683 A GB 1214683A GB 9851/68 A GB9851/68 A GB 9851/68A GB 985168 A GB985168 A GB 985168A GB 1214683 A GB1214683 A GB 1214683A
Authority
GB
United Kingdom
Prior art keywords
platen
cylinder
valve
chamber
fluid
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
GB9851/68A
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.)
Cincinnati Shaper Co
Original Assignee
Cincinnati Shaper Co
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 Cincinnati Shaper Co filed Critical Cincinnati Shaper Co
Publication of GB1214683A publication Critical patent/GB1214683A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/28—Arrangements for preventing distortion of, or damage to, presses or parts thereof
    • B30B15/281—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices
    • B30B15/284—Arrangements for preventing distortion of, or damage to, presses or parts thereof overload limiting devices releasing fluid from a fluid chamber subjected to overload pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

1,214,683. Compression moulding. CINCINNATI SHAPER CO. 29 Feb., 1968 [28 April, 1967], No. 9851/68. Heading B5A. In a compacting press for producing articles from powdered metal or other material a fixed stop for a press platen 10 during a pressing operation is provided by hydraulic fluid in a chamber 18 supplied by a high-pressure pump P, the platen being lowerable subsequently by opening a valve 27 to allow the fluid to flow from the chamber 18 into a chamber 30. This fluid moves a floating annular piston 31 upwardly in a cylinder 12 against a low-pressure fluid supplied through a port 71. During a compacting stroke the platen 10 floats downwardly until it abuts the top plate 13 of the cylinder 12 which is connected to a piston 14 in a cylinder 15. When the compacted article is to be ejected, an ejection rod 60 carried by the next higher platen or the top platen, and a rod member 22 are moved downwardly against the action of a spring 23 so as to open the valve 27. Before valve 27 is opened, a subsidiary valve element 25 carried by the member 22 is opened. After ejection, the parts are restored to their original positions by the low-pressure fluid above the piston 31. The level at which the platen 10 is stopped can be adjusted by lowering the cylinder 15 by means of a screw 50 and nut 51. Overload protection for the platen 10 is provided by a relief valve 41.
GB9851/68A 1967-04-28 1968-02-29 Hydraulic releasable stop device for presses Expired GB1214683A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63462167A 1967-04-28 1967-04-28

Publications (1)

Publication Number Publication Date
GB1214683A true GB1214683A (en) 1970-12-02

Family

ID=24544559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9851/68A Expired GB1214683A (en) 1967-04-28 1968-02-29 Hydraulic releasable stop device for presses

Country Status (4)

Country Link
US (1) US3460202A (en)
FR (1) FR1565058A (en)
GB (1) GB1214683A (en)
SE (1) SE327143B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635617A (en) * 1970-03-13 1972-01-18 Tamagawa Kikai Kinzoku Kk Platen locking device in powdered material compacting presses
US4014634A (en) * 1976-05-26 1977-03-29 Iwatani & Co., Ltd. Powder molding press
DE2940114C2 (en) * 1979-10-03 1984-03-15 Krauss-Maffei AG, 8000 München Device for molding objects
US4443171A (en) * 1982-04-14 1984-04-17 Wesjay, Inc. Multi-motion mechanical press

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2762078A (en) * 1951-06-28 1956-09-11 Haller John Molding press with adjustable core rod
US2796633A (en) * 1952-03-07 1957-06-25 Husquvarna Vapenfabriks Aktieb Powder presses
US3132379A (en) * 1961-04-12 1964-05-12 Bliss E W Co Compacting press
US3191232A (en) * 1961-12-07 1965-06-29 Haller John Hydraulic compacting press
US3172156A (en) * 1962-09-06 1965-03-09 Cincinnati Shaper Co Compacting press
US3168759A (en) * 1963-01-17 1965-02-09 Cincinnati Shaper Co Core punch and bottom stop therefor
US3337916A (en) * 1965-10-28 1967-08-29 Cincinnati Shaper Co Compacting press with selective ejection

Also Published As

Publication number Publication date
US3460202A (en) 1969-08-12
DE1752256A1 (en) 1971-05-13
FR1565058A (en) 1969-04-25
SE327143B (en) 1970-08-10
DE1752256B2 (en) 1976-04-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee