(19)
(11) EP 1 314 546 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.2004 Bulletin 2004/16

(43) Date of publication A2:
28.05.2003 Bulletin 2003/22

(21) Application number: 02014998.5

(22) Date of filing: 10.07.2002
(51) International Patent Classification (IPC)7B30B 11/02
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 19.09.2001 IT BO20010563

(71) Applicant: MATRIX S.r.l.
40132 Bologna (IT)

(72) Inventor:
  • Belluzzi, Dante
    40132 Bologna (IT)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano & Associati SpA Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) Method and press for uniform pressing and compaction of parts


(57) A method for uniform pressing and compaction of parts, comprising a first step (I), in which the powders to be pressed are loaded into the mold, with the lower male plugs (Y0,Y1,Y2) arranged in a preset position with respect to the upper surface (A) of the central female mold part, so as to form containment volumes (V0,V1,V2) for the powder to be pressed in each region of the part; a second step (II), in which the upper male plugs (X) are made to descend at a substantially low pressure until they make contact with the powder deposited in the female mold part and then each individual region of the lower male plugs descends synchronously with the upper male plugs in order to arrange the centerline planes of each individual region on a same plane, which will be the horizontal plane of symmetry of the finished part; a third step (III), in which the pressure increases gradually and the male plugs of the pairs of male plugs of each region move symmetrically toward each other with respect to the horizontal plane of symmetry of the part until final compaction occurs.







Search report