Plane plate of a pressing tool

Patent metadata

Field	Value
Publication number	US-11465203-B2
Application number	US-201816626078-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jun 29, 2017
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press is by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction. 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 with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.

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 the press by way of at least one lifting cylinder is displaceable along an axial direction, the plane plate comprising:
a link to the at least one lifting cylinder;
at least one guiding face that is at least partially cylindrical and that is parallel with the axial direction for contacting a guide column; and
a centrally disposed receptacle for contacting the punch or the 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 with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.

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 with a wall thickness and a second centerline, wherein the second region in the radial direction extends across a second extent in which a second centerline runs at a second angle of at least 10 angular degrees in relation to the radial direction; wherein the second extent differs from the first extent.

4. The plane plate as claimed in claim 1 , 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 centerline in relation to the radial direction runs at a third angle of at least 10 angular degrees, wherein the first angle and the third angle are oriented so as to be mutually opposed in relation to the radial direction.

5. The plane plate as claimed in claim 4 , wherein the first cross section extends through the at least one guiding face, and the guiding face has a lower end which 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.

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

7. A pressing tool for a press, the pressing tool 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 guiding face that is at least partially cylindrical, 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 a radial direction are disposable 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 disposable so as to be at least partially mutually overlapping along the axial direction and along the radial direction.

8. The pressing tool as claimed in claim 7 , wherein the plane plates for contacting two guide columns that are common to the plane plates have in each case at least two cylindrical guiding faces; wherein the first plane plate has a first guiding face having a first lower end, and the second plane plate has a third guiding face having a third lower end, wherein the first plane plate in relation to the axial direction is disposable above the second plane plate, and the plane plates herein are mutually disposable 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.

9. A method of producing a green compact using the press plate of claim 1 in a pressing tool, the method comprising:
compressing a powder in the pressing tool to produce the green compact.

Assignees

• Gkn Sinter Metals Engineering Gmbh

Inventors

• Schmitt Rainer
• Tekines Hasim
• Maassen Robert

Classifications

• B22F3/03 Primary

  Press-moulding apparatus therefor · CPC title

• B30B15/022

  Moulds for compacting material in powder, granular of pasta form · CPC title

• B22F2003/033

  with multiple punches working in the same direction · CPC title

• B22F2998/10

  Processes characterised by the sequence of their steps · CPC title

• B30B11/027 Primary

  Particular press methods or systems · CPC title