Machine tools and methods for ejecting workpiece parts

Patent metadata

Field	Value
Publication number	US-10625330-B2
Application number	US-201615186902-A
Country	US
Kind code	B2
Filing date	Jun 20, 2016
Priority date	Jun 19, 2015
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

The invention relates to machine tools and methods for processing plate-like workpieces. The machine tool comprises a first movement device for the movement of the workpiece in a first direction, two workpiece supporting surfaces spaced apart by a gap extending in a second direction and configured for supporting the workpiece, and a second movement device for the movement of a pressing tool in the second direction. The pressing tool comprises two tool components that are configured to move in a stroke direction relative to one another in order to process the workpiece in the gap by at least one of stamping and shaping. The machine tool also comprises at least one receiving device configured to move in the second direction one or more of in and along the gap for depositing at least one workpiece part formed when processing the workpiece by at least one of stamping and shaping.

First claim

What is claimed is:

1. A machine tool for processing a workpiece, comprising:
a pressing tool;
a first movement device configured to move the workpiece in a first direction (X);
two workpiece supporting surfaces configured to support the workpiece, wherein the two workpiece supporting surfaces are spaced apart by a gap extending in a second direction (Y);
a second movement device configured to move the pressing tool in the second direction (Y), wherein the pressing tool comprises two tool components that are configured to move in a stroke direction (Z) relative to one another to process the workpiece in the gap by stamping, wherein the pressing tool further comprises a receiving device configured to move in the second direction (Y) in the gap for depositing at least one workpiece part cut off from the workpiece when processing the workpiece by the stamping,
wherein the receiving device comprises a controllable ejection device for ejecting the at least one workpiece part deposited in the receiving device; and
a control device configured to control the movement of the receiving device at different ejection positions (Y A1 , . . . Y A3 ) along the gap and configured to control the ejection device to cause ejection of the at least one workpiece part at the different ejection positions (Y A1 , . . . Y A3 ).

2. The machine tool of claim 1 , wherein the receiving device is attached to one of the two tool components and is configured to be moved in the gap together with the tool component.

3. The machine tool of claim 1 , wherein the receiving device comprises a parts container for depositing the at least one workpiece part.

4. The machine tool of claim 1 , wherein the controllable ejection device comprises at least one pivotable flap configured to move into a first pivoted position (S 1 ) for supporting the at least one workpiece part deposited in the receiving device and into a second pivoted position (S 2 ) for ejecting workpiece parts from the receiving device.

5. The machine tool of claim 4 , wherein a pivot axis of the at least one pivotable flap is aligned parallel with or perpendicular to the second direction (Y).

6. The machine tool of claim 4 , wherein the at least one pivotable flap is configured to move into a third pivoted position (S 3 ) for ejecting the at least one workpiece part from the receiving device, wherein an ejection direction (A 1 ) in the second pivoted position (S 2 ) differs from an ejection direction (A 2 ) in the third pivoted position (S 3 ).

7. The machine tool of claim 4 , wherein the at least one pivotable flap forms a bottom region of a parts container.

8. The machine tool of claim 7 , further comprising a further pivotable flap formed on a side region of the parts container and configured to have a first pivoted position (S 1 ), wherein the further pivotable flap is adjacent to the bottom region of the parts container formed by the at least one pivotable flap, wherein the further pivotable flap is configured to have a second pivoted position (S 2 ), wherein the further pivotable flap is spaced apart from the bottom region of the parts container.

9. The machine tool of claim 8 , wherein the at least one pivotable flap and the further pivotable flap are coupled together in terms of movement.

10. The machine tool of claim 1 , wherein the ejection device comprises at least one ejection chute for ejecting the at least one workpiece part from the receiving device in an ejection direction (A 1 , A 2 ).

11. The machine tool of claim 10 , wherein the ejection direction (A 1 , A 2 ) extends transversely to the second direction (Y).

12. The machine tool of claim 1 , wherein the receiving device comprises a feeding chute for feeding the at least one workpiece part from one of the tool components of the pressing tool.

13. The machine tool of claim 12 , further comprising a sensor device for detecting the at least one workpiece part that pass the feeding chute or that protrude upwardly out of a parts container.

14. The machine tool of claim 1 , wherein the receiving device is arranged below a continuous opening in a lower of the two tool components of the pressing tool.

15. The machine tool of claim 14 , further comprising at least one guide element for guiding the at least one workpiece part when ejected from the receiving device into one or more collection containers arranged inside the gap.

16. A machine tool for processing a workpiece, comprising:
a pressing tool;
a first movement device configured to move the workpiece in a first direction (X);
two workpiece supporting surfaces configured to support the workpiece, wherein the two workpiece supporting surfaces are spaced apart by a gap extending in a second direction (Y);
a second movement device configured to move a the pressing tool in the second direction (Y), wherein the pressing tool comprises two tool components that are configured to move in a stroke direction (Z) relative to one another to process the workpiece in the gap by stamping, wherein the pressing tool further comprises a receiving device configured to move in the second direction (Y) in the gap for depositing at least one workpiece part cut off from the workpiece when processing the workpiece by the stamping,
wherein the receiving device comprises a controllable ejection device for ejecting the at least one workpiece part deposited in the receiving device
wherein the controllable ejection device comprises at least one pivotable flap configured to move into a first pivoted position (S 1 ) for supporting the at least one workpiece part deposited in the receiving device and into a second pivoted position (S 2 ) for ejecting workpiece parts from the receiving device, and
wherein the at least one pivotable flap is configured to move into a third pivoted position (S 3 ) for ejecting the at least one workpiece part from the receiving device, wherein an ejection direction (A 1 ) in the second pivoted position (S 2 ) differs from an ejection direction (A 2 ) in the third pivoted position (S 3 ).

Assignees

• Trumpf Werkzeugmaschinen Gmbh Co Kg

Inventors

• Traenklein Dennis
• Schmauder Frank

Classifications

• B21D22/02

  Stamping using rigid devices or tools · CPC title

• B21D45/02 Primary

  Ejecting devices · CPC title

• B21D45/003

  in punching machines or punching tools · CPC title

• B21D43/20 Primary

  Storage arrangements; Piling or unpiling (in general B65G, {B65H}) · CPC title

• B21D43/282

  Discharging crop ends or the like · CPC title