EP 1228856 A2 20020807 - Powder compacting tool
Title (en)
Powder compacting tool
Title (de)
Werkzeug zum Zusammenpressen von Pulver
Title (fr)
Outil pour le compactage de poudre
Publication
Application
Priority
SE 0100364 A 20010206
Abstract (en)
The present invention relates to a method of compacting a powder disposed in a forming chamber by a powder compacting tool having at least two upper punches and two lower punches, the punches being moved different travel distance during compaction in order to create a compacted body having uniform density and different thickness in different parts thereof, whereby the method includes moving the punches in sequence and with the same velocity, and accomplishing the method with a powder compacting tool (1) comprising a matrix (2) having a through-going cavity, at least two upper punches (3,4), which are movable in the axial direction of the cavity, and a at least two lower punches (5,6). According to the invention the upper punches (3,4) have different axial lengths and the tool comprises a single ram (8) for moving the upper punches (3,4) towards the at least two lower punches (5,6) during a compacting operation and means are for holding the at least two lower punches stationary during a compacting operation. <IMAGE>
IPC 1-7
IPC 8 full level
B30B 11/02 (2006.01); B30B 11/04 (2006.01)
CPC (source: EP)
B30B 11/02 (2013.01); B30B 11/04 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1228856 A2 20020807; EP 1228856 A3 20020828; CN 1369368 A 20020918; SE 0100364 D0 20010206
DOCDB simple family (application)
EP 02445013 A 20020204; CN 02103468 A 20020206; SE 0100364 A 20010206