(19)
(11) EP 0 502 734 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.02.1993 Bulletin 1993/05

(43) Date of publication A2:
09.09.1992 Bulletin 1992/37

(21) Application number: 92301903.8

(22) Date of filing: 05.03.1992
(51) International Patent Classification (IPC)5B30B 11/08
(84) Designated Contracting States:
BE DE ES FR GB IT

(30) Priority: 06.03.1991 GB 9104720

(71) Applicant: MANESTY MACHINES LIMITED
Liverpool L24 9LQ (GB)

(72) Inventor:
  • Wilson, David Henry
    Hunts Cross, Liverpool, L25 0LS (GB)

(74) Representative: Cardwell, Stuart Martin et al
Roystons Tower Building Water Street
Liverpool L3 1BA
Liverpool L3 1BA (GB)


(56) References cited: : 
   
       


    (54) Tabletting press


    (57) In a tabletting press comprising a turret (2) rotatable with respect to a housing (1) and carrying rotatably with it a plurality of dies and a plurality of opposed pairs of punches (3; 3', 3") and a pair of rotatable pressure rolls (7; 7', 7") between which the opposed punches are passed to form tablets in successive dies, and respective curves (5 ; 5', 5") mounted, in use, non-rotatably with respect to the housing to control movement of the opposed pair of punches in less heavily loaded sectors of the tabletting cycle outside the influence of the compression rolls, an improved compression profile is achieved by interposing between at least one of the compression rolls and heads of associated punches under its influence a rotatable disc (11 ; 11', 11) one surface (15) of which is acted on by the associated compression roll and the other surface (17) of which contacts the heads of the punches to control the compression profile of the punches outside of the influence of the fixed curves. Conveniently the disc has an axis of rotation inclined with respect to the axis of the punches.





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