Powder press or powder press adapter, and method for operating a powder press

Patent metadata

Field	Value
Publication number	US-9770852-B2
Application number	US-201113977077-A
Country	US
Kind code	B2
Filing date	Dec 29, 2011
Priority date	Dec 30, 2010
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

In a powder press, a spacer that is effective between a die plate and an opposite yoke is integrated into the die plate, particularly if the die plate is provided in an adapter, thus increasing the reliability of set-up processes.

First claim

The invention claimed is:

1. Powder press or press adaptor for pressing powder comprising a powder press having at least one die carrier, wherein the powder press has at least one counter-yoke that can be displaced relative to the die carrier, comprising at least one of
(a) a spacer that is in effect between the die carrier and the counter-yoke and
(b) a lifting device that is in effect between the die carrier and the counter-yoke,

which spacer or device comprises a cylinder and a piston,
wherein the cylinder surrounds a passage opening through the die carrier or through the counter-yoke,
wherein at least one of the cylinder and the piston surrounds a guide rod,
wherein the piston is disposed in said cylinder, and
wherein a line can apply hydraulic pressure to said cylinder.

2. Powder press or press adaptor according to claim 1 , wherein at least one of the passage opening and the guide rod is parallel to a punch axis.

3. Powder press or press adaptor according to claim 2 , wherein the passage opening surrounds a guide rod.

4. Powder press or press adaptor for pressing powder comprising a powder press having at least one die carrier, wherein the powder press has at least one counter-yoke that can be displaced relative to the die carrier, comprising at least one of
(a) a spacer that is in effect between the die carrier and the counter-yoke and
(b) a lifting device that is in effect between the die carrier and the counter-yoke,

which spacer or device comprises a module within at least one of the die carrier and the counter-yoke,
wherein a line can apply hydraulic pressure to said module.

5. Powder press or press adaptor according to claim 4 , wherein the module is at least one of a cylinder and a piston of the spacer or of the lifting device.

6. Powder press or press adaptor according to claim 4 , wherein at least one of the spacer and the lifting device is configured symmetrically with reference to a passage opening through at least one of the die carrier and the counter-yoke, wherein the passage opening is parallel to a punch axis.

7. Powder press or press adaptor according to claim 6 , wherein the passage opening surrounds a guide rod.

8. Powder press or press adaptor according to claim 6 , wherein the spacer or the lifting device surrounds the passage opening.

9. Powder press or press adaptor for pressing powder comprising a powder press having at least one die carrier, wherein the powder press has at least one counter-yoke that can be displaced relative to the die carrier, comprising a spacer that is in effect between the die carrier and the counter-yoke, which is configured to maintain the distance in a first of its operational states and resiliently in a second of its operational states,
wherein the spacer comprises a piston and a corresponding cylinder, said cylinder surrounding a passage opening through the die carrier or through the counter-yoke, and said cylinder surrounding a guide rod,
wherein said piston is disposed in said cylinder, and
wherein a line can apply hydraulic pressure to said cylinder.

10. Powder press or press adaptor according to claim 9 , wherein the spacer is configured to have a spring action.

11. Powder press or press adaptor according to claim 1 , wherein the spacer or the lifting device is parallel to a punch axis.

12. Powder press or press adaptor according to claim 1 , wherein the spacer or the lifting device has a locking device.

13. Powder press or press adaptor according to claim 1 , further comprising at least two such spacers or lifting devices, which are in effect in parallel.

14. Method for operation of a powder press,
in which a die carrier and at least one counter-yoke that can be displaced relative to the die carrier are held at a defined distance during a first operational state via a spacer or via lifting device as a line applies hydraulic pressure to said spacer or to said lifting device, and
in which the die carrier and the at least one counter-yoke are released, in this regard, during a second operational state, wherein the spacer or the lifting device is released in the direction of the defined distance for the release of the die carrier and of the counter-yoke
wherein said spacer or said lifting device comprises a module within at least one of the die carrier and the counter-yoke, and
wherein said line applies hydraulic pressure to said module.

15. Method according to claim 14 , wherein the spacer is unlocked to release it.

Assignees

• Solty Walter
• Sms Group Gmbh

Inventors

• Solty Walter

Classifications

• B30B11/02 Primary

  using a ram exerting pressure on the material in a moulding space · CPC title

• B30B15/028

  Loading or unloading of dies, platens or press rams · CPC title

• B30B15/041

  Guides · CPC title

• B29C43/361 Primary

  with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons (transfer moulding B29C45/02; injection-compression moulding B29C45/561) · CPC title