Plane plate of a pressing tool

Patent metadata

Field	Value
Publication number	US-11148382-B2
Application number	US-201816624817-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jun 29, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

A plane plate for a pressing tool of a press; wherein the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein the plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region in which a wall thickness of the plane plate is continuously variable.

First claim

The invention claimed is:

1. A plane plate for a pressing tool of a press, wherein the plane plate for activating a punch of a press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein the plane plate at least in a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region in which a wall thickness of the plane plate is continuously variable.

2. The plane plate as claimed in claim 1 , wherein the first region in the radial direction extends across a first extent which is at least 10% of a smallest spacing between the receptacle and the guiding face in the first cross section along the radial direction.

3. The plane plate as claimed in claim 2 , wherein the plane plate in at least a second cross section which runs along the radial direction between the receptacle and the guiding face, and in relation to the first cross section in a circumferential direction is disposed so as to be rotated by an angular range, has at least a second region in which the wall thickness of the plane plate is continuously variable, wherein the second region in the radial direction extends across a second extent which differs from the first extent.

4. The plane plate as claimed in claim 1 , wherein the wall thickness at least in the first region varies by at least 5%.

5. The plane plate as claimed in claim 1 , wherein at least the first region in the first cross section has a first centerline, wherein the first centerline in relation to the radial direction runs at a first angle of at least 10 angular degrees.

6. The plane plate as claimed in claim 5 , wherein the plane plate in the first cross section has a third region that in the radial direction is contiguous to the first region, wherein the third region has a third centerline, wherein the third centerlinein relation to the radial direction runs at a third angle of at least 10 angular degrees, wherein the first angl and the third angle are oriented so as to be mutually opposed in relation to the radial direction.

7. The plane plate as claimed in claim 6 , wherein a first guiding face has a first lower end, and a second guiding face has a second lower end; wherein the first cross section extends through the guiding face, and the end of the guiding face is disposed at a height in relation to the axial direction, wherein a reversing region of the plane plate is disposed in the first cross section between the first region and the third region, wherein said reversing region in relation to the axial direction is disposed below the lower end of the guiding face.

8. The plane plate as claimed in claim 1 , wherein the plane plate for contacting in each case one guide column has at least two at least partially cylindrical guiding faces, wherein a first at least partially cylindrical guiding face has a first lower end, and a second at least partially cylindrical guiding face has a second lower end ( 32 ), wherein the first lower end and the second lower end are disposed at mutually dissimilar heights in relation to the axial direction.

9. A pressing tool for a press, at least comprising a first plane plate and a second plane plate, wherein at least the first plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein at least the first plane plate has a link to the at least one lifting cylinder, wherein each plane plate for contacting a guide column that is common to the plane plates has in each case at least one at least partially cylindrical guiding face, and for contacting the punch or a punch holder of the press has in each case one centrally disposed receptacle; wherein the plane plates along an axial direction are capable of being disposed on top of one another such that the respective at least one guiding face of each plane plate is disposed so as to be coaxial with the respective other at least one guiding face; wherein at least the first plane plate is a plane plate as claimed in claim 1 ; wherein the plane plates are capable of being disposed so as to be at least partially mutually overlapping along the axial direction and along the radial direction.

10. The pressing tool as claimed in claim 9 , wherein the plane plates for contacting two guide columns that are common to the plane plates have in each case at least two at least partially cylindrical guiding faces; wherein the first plane plate has a first at least partially cylindrical guiding face having a first lower end, and the second plane plate has a third at least partially cylindrical guiding face having a third lower end, wherein the first plane plate in relation to the axial direction is capable of being disposed above the second plane plate, and the plane plates herein are capable of being mutually disposed such that the first guiding face contacts a first guide column of the common guide columns, and the third guiding face contacts a second guide column of the common guide columns; wherein the first lower end in relation to the axial direction herein is disposed below the third lower end.

11. The use of a plane plate in a pressing tool of a press for producing a green compact; wherein the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein the plane plate at least in a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region in which a wall thickness of the plane plate is continuously variable.

Assignees

• Gkn Sinter Metals Engineering Gmbh

Inventors

• Schmitt Rainer
• Tekines Hasim
• Maassen Robert

Classifications

• B22F3/03

  Press-moulding apparatus therefor · CPC title

• B22F2003/033

  with multiple punches working in the same direction · CPC title

• B30B11/027 Primary

  Particular press methods or systems · CPC title

• B30B15/067

  with means for equalizing the pressure exerted by a plurality of press rams · CPC title

• B28B3/027

  using a bottom press ram actuated upwardly towards mould covers · CPC title