1. A powder press for the production of pressed articles of powder-shaped pressing material comprising:
a female mould plate;
at least two upper plungers;
at least one hydraulic cylinder for the upper plungers;
at least one position sensor for the upper plungers;
a controlling means for the upper plungers;
at least two bottom plungers;
a separate hydraulic cylinder for each of the bottom plungers;
at least one position sensor for the bottom plungers;
a controlling means for the bottom plungers; and
a force sensor for each of the hydraulic cylinders; wherein:
the female mould plate has at least two female moulds and at least two female die bores,
the at least two upper plungers co-operate with the female moulds and the female die bores, respectively,
the at least two bottom plungers co-operate with the female moulds and the female die bores, respectively, and
each of the separate hydraulic cylinders for the bottom plungers are capable of independent actuation from each other, and are capable of applying different magnitudes of force from each other, and apply the force at different positions and,
each of the female die bores are capable of being filled with different amounts of powder.
2. The powder press according to claim 1, characterized in that one item selected from the list consisting of: the upper plungers, the bottom plungers, and any combination thereof, are mechanically coupled and connected to a hydraulic cylinder, and that one position sensor for one item selected from the list consisting of the upper plungers, the bottom plungers, and any combination thereof, is provided.
3. The powder press according to claim 1, characterized in that the bottom plungers are stationary and that the female mould plate is movable in the height direction and is connected to at least one hydraulic cylinder.
4. The powder press according to claim 1, characterized in that the hydraulic cylinders are separate ones for the upper and bottom plunger’s, annular cylinders and annular pistons are provided.
5. A powder press for the production of pressed articles of powder-shaped pressing material between upper and lower plungers comprising:
at least two upper plungers constructed and arranged to provide pressing force against powder-shaped pressing material;
at least two bottom plungers constructed and arranged to provide pressing force against powder-shaped pressing material;
a control for each of the plungers;
at least one position sensor for the plungers;
a force sensor for each of the plungers; wherein:
each upper plunger is paired with one bottom plunger to press the powder-shaped pressing material between them; and
each of the controls for the bottom plungers are operatively engaged to each of the bottom plungers, are capable of independently actuating the bottom plungers, are capable of applying different magnitudes of force, and apply the force at different positions of the powder-shaped pressing material.
6. The powder press according to claim 5, characterized in that one item selected from the list consisting of: the upper plungers, the bottom plungers, and any combination thereof, are mechanically coupled and connected to a hydraulic cylinder, and that one position sensor for one item selected from the list consisting of the upper plungers, the bottom plungers, and any combination thereof, is provided.
7. The powder press according to claim 5, further comprising a female mould plate characterized in that the bottom plungers are stationary and that the female mould plate is movable in the height direction and is connected to at least one hydraulic cylinder.
8. The powder press according to claim 5 further comprising hydraulic cylinders in mechanical communication with annular pistons and the plungers, characterized in that the hydraulic cylinders are separate ones for the upper and bottom plunger’s.
9. The powder press according to claim 5 characterized in that the plunger pairs are capable of pressing different amounts of powder-shaped pressing material.
10. The powder press according to claim 5 characterized in that the plunger pairs are capable of pressing the same amounts of powder-shaped pressing material.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A device comprising a static part (5), a sealing housing (17), and mount means for floating mounting of the sealing housing (17) about a deflecting shaft (1), rotating about a shaft axis (2) wherein the, sealing housing (17) is connected to the static part (5) in a manner to allow for both radial deflection and rotation about the shaft axis (2), wherein the mount means (15.1, 15.2) is provided on the static part (5) for mounting a curved spring (28.1, 28.2) which partially encompasses the sealing housing (17), wherein the curved spring (28.1, 28.2) engages in a bearing block (27.1, 27.2) on the sealing housing (17) and is held there by a cross bolt (29) sitting in a depression (31) in the curved spring (28.1, 28.2).
2. The device as claimed in claim 1, wherein the curved spring (28.1, 28.2) is a round bar under prestress.
3. The device as claimed in claim 1, wherein the bearing block (27.1, 27.2) for the curved spring (28.1, 28.2) sits on a half ring (25.1, 25.2) which extends under the mount means (15.1, 15.2).
4. The device as claimed in claim 3, further including two half rings (25.1, 25.2) with a respective bearing block (27.1, 27.2) and two curved springs (28.1, 28.2), wherein the half rings are connected to each other in the region of the bearing blocks (27.1, 27.2).
5. The device as claimed in claim 4, wherein the half rings (25.1, 25.2) sit in an annular groove (24) on a primary stuffing box (21) of the sealing housing (17), wherein the outer flange (16) protrudes and engages between the ring (14) and end flange (12).
6. The device as claimed in claim 5, wherein the primary stuffing box (21) is supported against a wearing sleeve (22) by a sealing assembly (23).
7. The device as claimed in claim 6, wherein further sealing housings (35, 36, 37) are connected to the half rings (25.1, 25.2) and to the primary stuffing box (21) by tension rods (33, 34) which are supported against the wearing sleeve (22.
8. A device comprising a static part (5), a sealing housing (17), and mount means for floating mounting of the sealing housing (17) about a deflecting shaft (1), rotating about a shaft axis (2) wherein the, sealing housing (17) is connected to the static part (5) in a manner to allow for both radial deflection and rotation about the shaft axis (2), wherein the mount means (15.1, 15.2) is provided on the static part (5) for mounting a curved spring (28.1, 28.2) which partially encompasses the sealing housing (17), wherein an outer flange (16) is provided on the sealing housing (17) and engages between an end flange (12) on the static part (5) and a ring (14) which is connected to the end flange (12).
9. The device as claimed in claim 8, wherein the curved spring (28.1, 28.2) is secured in the mount means (15.1, 15.2) on the static part (5) by a cross bolt (30) which sits in a depression (32) in the curved spring (28.1, 28.2).
10. The device as claimed in claim 8, wherein the outer flange (16) is supported against springs (18) in the ring (14).
11. The device as claimed in claim 8, wherein the outer flange (16) is supported against the end flange (12) by sealing rings (20).