B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/02 (2006.01) B21D 53/00 (2006.01) B22F 3/03 (2006.01) B22F 5/00 (2006.01) B22F 5/10 (2006.01) B30B 11/00 (2006.01) B30B 11/02 (2006.01)
Patent
CA 2344018
The present invention relates to a device for forming tubular articles (10) from pow- der material (5) comprising an upper pressing punch (6), a lower punch (3), a core pin (1) and a matrix (2) having an inner periphery corresponding to the outer pe- riphery of the upper and lower punch, a moulding cavity (4) being defined between the upper and lower punch, the core pin and the matrix, whereby the core pin is movable in relation to the matrix. According to the invention the upper pressing punch (6) is arranged to actuate movement of the core pin (1) or the matrix (2) dur- ing compacting of a powder (5) in the moulding cavity (4) so that the pressing punch and the core pin or the matrix move together.
Fetherstonhaugh & Co.
Skf Nova Ab
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