Device for compacting powder

Claim 1

A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized in that said compaction chamber (16) is formed by a block (1) having a conical bore (9) defined therein, and a conical sleeve (2) having a continuous uncut sidewall being movable in said conical bore to be radially compressed thereby.

Claim 2

A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized in that said compaction chamber (16) is formed by a block (1) having a conical bore (9) defined therein, and a conical sleeve (2) having a continuous uncut sidewall being movable in said conical bore to be radially compressed thereby.

Claim 4

A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized thereby that said movable support comprises a shaft portion (4) extending into the compaction chamber (16) and a head portion (13) having a larger cross-sectional area than the shaft portion, said head portion being movable in a cylinder (11) containing fluid, said head portion being provided with passages (14) to allow fluid to pass from one side of the head portion to the other, and that a piston (12) is movable in said cylinder along said shaft portion to form a seal therebetween, whereby said movable support is capable of performing both as a shock absorber and an extractor for the solid body.

Claim 5

A device for compacting powder into a solid body, said device comprising a compaction chamber (16) for the powder (7), a movable support (4) extending into said compaction chamber to support the powder therein, and means (5) for launching a punch (58) against the powder to form said solid body, characterized thereby that said movable support comprises a shaft portion (4) extending into the compaction chamber (16) and a head portion (13) having a larger cross-sectional area than the shaft portion, said head portion being movable in a cylinder (11) containing fluid, said head portion being provided with passages (14) to allow fluid to pass from one side of the head portion to the other, and that a piston (12) is movable in said cylinder along said shaft portion to form a seal therebetween, whereby said movable support is capable of performing both as a shock absorber and an extractor for the solid body.

Claim 7

A device according to claims 1 or 3, characterized thereby that said means for launching a punch (58) comprises a barrel (5) extending between said compaction chamber (16) and a pressure gas container (55), and a valve body (61) being movable in the direction of the barrel to control fluid communication between said container and the barrel, said valve body being provided with a flange (64) which is movable in a control chamber (63,65), and an end portion (66) with reduced diameter for cooperation with an end surface (59) of the barrel.