GB1224700A - Apparatus for producing press-moulded articles - Google Patents

Apparatus for producing press-moulded articles

Info

Publication number
GB1224700A
GB1224700A GB56509/69A GB5650969A GB1224700A GB 1224700 A GB1224700 A GB 1224700A GB 56509/69 A GB56509/69 A GB 56509/69A GB 5650969 A GB5650969 A GB 5650969A GB 1224700 A GB1224700 A GB 1224700A
Authority
GB
United Kingdom
Prior art keywords
sleeve
air
punch
powder
punches
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
GB56509/69A
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.)
Shionogi and Co Ltd
Original Assignee
Shionogi and 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 Shionogi and Co Ltd filed Critical Shionogi and Co Ltd
Publication of GB1224700A publication Critical patent/GB1224700A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0005—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for briquetting presses
    • B30B15/0017—Deairing means
    • 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
    • B30B11/08—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 co-operating with moulds carried by a turntable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Powder Metallurgy (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

1,224,700. Compression moulding powders under reduced pressure. SHIONOGI & CO. Ltd. 18 Nov., 1969 [18 Nov., 1968], No. 56509/69. Heading B5A. In a rotary table compression moulding machine wherein powder is compressed in a die between upper and lower opposing punches, the powder is subjected to reduced air pressure before and during the compression. The punches are carried by a rotational structure 1 rotating on a stationary frame. The upper punch 6 is located in guide sleeve 2 which in turn is located in a receptacle 11. The lower end 21 of guide sleeve 2 carries a flexible rubber boot 7 which contacts a matrix 3 having a die cavity when the sleeve 2 is lowered. Holes 24 in sleeve 2 connect the upper punch 6 with cavity 17 in receptacle 11, and thence to pipe-line 14. The lower punch is mounted in slide guide portion 13 and passes through recess 8 which is connected to pipelines 15 and 16. The air pressure around the punches and in the die cavity is controlled by pressureregulating means 5 and 9 which are fixedly mounted on the stationary frame and connected to a source of reduced air pressure. The pressing cycle commences with the upper punch 6 and guide sleeve 2 raised and a flow of air through recess 8 removing any powder remaining from the previous process, this flow continuing while the lower punch 4 is lowered and the cavity filled. The air flow is then stopped, lower punch 4 is raised slightly and the surplus powder scraped away. The lower punch is again lowered and the pressure inside chamber 8 is reduced by extraction of air through lines 15 and 16. Sleeve 2 is lowered into contact with matrix 3, air inside the sleeve is removed through pipeline 14 and the upper punch is forced downwards to compress the powder. After compressing, both air chambers are opened to the atmosphere, the upper punch is raised and the tablet formed is raised on the lower punch and then swept away by a deflector. The reduced air pressure is preferably less than 200 mm. Hg absolute and the spaces between the moving parts are sealed by 0-rings 40. The punches and guide sleeve are operated by conventional guide rails (not shown).
GB56509/69A 1968-11-18 1969-11-18 Apparatus for producing press-moulded articles Expired GB1224700A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8429268 1968-11-18

Publications (1)

Publication Number Publication Date
GB1224700A true GB1224700A (en) 1971-03-10

Family

ID=13826377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56509/69A Expired GB1224700A (en) 1968-11-18 1969-11-18 Apparatus for producing press-moulded articles

Country Status (4)

Country Link
US (1) US3599578A (en)
CH (1) CH506289A (en)
FR (1) FR2023533A1 (en)
GB (1) GB1224700A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918868A (en) * 1974-06-20 1975-11-11 Howell Lab Inc Apparatus for purging ejecting pin cavities
DE2914201C2 (en) * 1979-04-07 1982-12-02 Wilhelm Fette Gmbh, 2053 Schwarzenbek Tablet machine
US4292017A (en) * 1980-07-09 1981-09-29 Doepel Wallace A Apparatus for compressing tablets
US4362493A (en) * 1980-07-09 1982-12-07 Doepel Wallace A Apparatus for compressing tablets
US4567714A (en) * 1980-11-24 1986-02-04 Chasman Sydney A Method and apparatus for forming capsules
DE4026351A1 (en) * 1990-08-21 1992-02-27 Bayer Ag METHOD AND DEVICE FOR PRODUCING TABLETS FROM METAL POWDER AND THEIR USE AS CATALYSTS
IT1279665B1 (en) * 1995-10-19 1997-12-16 Ima Spa IMPROVEMENTS ON A COMPRESSING MACHINE
WO1999050044A1 (en) * 1998-03-30 1999-10-07 Sodick Co., Ltd. Injection device of plunger type injection molding machine
US6325965B1 (en) * 1998-11-02 2001-12-04 Sumitomo Special Metals Co., Ltd. Forming method and forming apparatus
JP3737331B2 (en) * 1999-03-31 2006-01-18 Ｓｐｓシンテックス株式会社 Automatic powder filling method and apparatus
SE9903812D0 (en) * 1999-10-22 1999-10-22 Skf Nova Ab A forming tool
US7404707B2 (en) * 2001-04-23 2008-07-29 Leco Corporation Sample mounting press
WO2004020184A1 (en) * 2002-08-26 2004-03-11 Laeis Bucher Gmbh Device and method for the production of blanks
CN105128388A (en) * 2015-09-22 2015-12-09 太仓益鑫机床有限公司 Rotary type pressing machine
CN117920999B (en) * 2024-03-25 2024-05-24 烟台东一粉末冶金制造有限公司 Preparation device of powder metallurgy steering power-assisted oil pump stator and application method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2043086A (en) * 1934-04-07 1936-06-02 Stokes Machine Co Tablet compressing machine
US2969753A (en) * 1958-01-30 1961-01-31 Pfizer & Co C Feeding and pick-off arrangement for tablet-forming machine
US3029752A (en) * 1959-07-20 1962-04-17 Stokes F J Corp Tablet making machine

Also Published As

Publication number Publication date
DE1957995B2 (en) 1977-02-03
DE1957995A1 (en) 1970-06-25
US3599578A (en) 1971-08-17
CH506289A (en) 1971-04-30
FR2023533A1 (en) 1970-08-21

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