Tool changing device for a forming press

Patent metadata

Field	Value
Publication number	US-10399133-B2
Application number	US-201515313132-A
Country	US
Kind code	B2
Filing date	Apr 24, 2015
Priority date	May 23, 2014
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

The invention relates to a tool changing device ( 1 ) for a forming press ( 2 ), in particular a press brake, comprising at least one tool magazine ( 3, 4 ) and at least one transfer device ( 5, 6 ) for the transfer of the forming tools ( 7, 8 ) of the at least one tool magazine ( 3, 4 ), which are storable in the at least one tool magazine ( 3, 4 ), from the at least one tool magazine ( 3, 4 ) to the forming press ( 2 ) and in the reverse direction, wherein the at least one transfer device ( 5, 6 ) has a drivable thrust chain ( 9, 10 ) for the transmission of compressive and tensile forces.

First claim

The invention claimed is:

1. A tool changing device comprising:
at least one tool magazine and
at least one transfer device for transferring forming tools storable in the at least one tool magazine to a forming press and for transferring the forming tools from the forming press to the at least one tool magazine,
wherein the at least one transfer device comprises a drivable push chain for transferring pushing and pulling forces, and
wherein the at least one tool magazine comprises a drivable, rotatably mounted disc, mounted for rotation about a rotation axis and having a plurality of groove-like receivers for receiving the forming tools, and
wherein the at least one transfer device transfers the forming tools to and from the groove-like receivers along an axis that is transverse relative to the rotation axis.

2. The tool changing device as claimed in claim 1 , wherein the push chain comprises at least one coupling device for temporary coupling of a forming tool of the forming tools to the push chain.

3. The tool changing device as claimed in claim 2 , wherein the at least one coupling device comprises
at least one magnetic coupling element, and/or
at least one sensor configured to detect a forming tool coupled to the at least one coupling device, and/or
at least one communication device for a wireless transfer of data.

4. The tool changing device as claimed in claim 1 , wherein the drivable push chain can be driven by at least one drive device.

5. The tool changing device as claimed in claim 4 , wherein a transfer of force from the at least one drive device to the push chain is performed by friction.

6. The tool changing device as claimed in claim 4 , wherein the at least one drive device comprises drive shafts, and wherein the drive shafts are coated, and/or pressing forces of the drive shafts can be adjusted to the drivable push chain via at least one adjusting device.

7. The tool changing device as claimed in claim 1 , wherein the tool changing device comprises at least one chain storage for storing the push chain.

8. The tool changing device as claimed in claim 1 , wherein the drivable, rotatably mounted disc comprises a central recess, and the push chain can be moved from an area of the central recess from the at least one tool magazine to the forming press and from the forming press to the at least one tool magazine.

9. The tool changing device as claimed in claim 1 , wherein the at least one tool magazine is designed to be height-adjustable to adjust the height of the at least one tool magazine relative to the forming press.

10. The tool changing device as claimed in claim 1 , wherein the at least one tool magazine comprises at least one first tool magazine for storing stamping tools and at least one second tool magazine for storing counter tools for the stamping tools.

11. The tool changing device as claimed in claim 10 , wherein the at least one transfer device comprises:
a first transfer device for transferring the stamping tools from the at least one first tool magazine to the forming press and from the forming press to the at least one first tool magazine, and
a second transfer device for transferring the counter tools from the at least one second tool magazine to the forming press and from the forming press to the at least one second tool magazine, and
wherein the first transfer device comprises the drivable push chain.

12. The tool changing device as claimed in claim 1 , wherein the tool changing device comprises at least one device for connecting the tool changing device to the forming press.

13. The tool changing device as claimed in claim 12 , wherein the at least one device for connecting the tool changing device to the forming press comprises a guide for the push chain.

14. An arrangement comprising:
the tool changing device as claimed in claim 1 , and
a forming press.

15. A method comprising:
providing a tool changing device as claimed in claim 1 ,
storing a forming tool in the at least one tool magazine of the tool changing device, and
transferring, via the at least one transfer device, the forming tool from the at least one tool magazine to the forming press,
wherein pushing and pulling forces are transferred via the drivable push chain of the at least one transfer device.

16. The tool changing device as claimed in claim 1 , wherein the drivable, rotatably mounted disc comprises a central recess, and
wherein the groove-like receivers extend from the central recess to an outer circumference of the drivable, rotatably mounted disc.

17. A tool changing device comprising:
an upper tool magazine,
a lower tool magazine,
a first transfer device for transferring forming tools storable in the upper tool magazine to a forming press and for transferring the forming tools from the forming press to the upper tool magazine, and
a second transfer device for transferring forming tools storable in the lower tool magazine to the forming press and for transferring the forming tools from the forming press to the lower tool magazine,
wherein the first transfer device comprises a first drivable push chain for transferring pushing and pulling forces, and
wherein the second transfer device comprises a second drivable push chain for transferring pushing and pulling forces, and
wherein at least one of the upper tool magazine and the lower tool magazine comprises a drivable, rotatably mounted disc mounted for rotation about a vertical rotation axis and having receivers for receiving the forming tools.

18. The tool changing device as claimed in claim 17 , wherein the first drivable push chain of the first transfer device comprises at least one coupling device for temporary coupling of a forming tool of the forming tools to the first push chain.

19. The tool changing device as claimed in claim 18 , wherein the at least one coupling device comprises
at least one magnetic coupling element, and/or
at least one sensor configured to detect a forming tool coupled to the at least one coupling device, and/or
at least one communication device for a wireless transfer of data.

20. A tool changing device comprising:
at least one tool magazine, and
at least one transfer device for transferring forming tools storable in the at least one tool magazine to a forming press and for transferring the forming tools from the forming press to the at least one tool magazine,
wherein the at least one transfer device comprises a drivable push chain for transferring pushing and pulling forces,
wherein the at least one tool magazine comprises a drivable, rotatably mounted disc having receivers for receiving the forming tools, and
wherein the rotational axis of the rotatably mounted disc is vertical.

Assignees

• Trumpf Maschinen Austria Gmbh & Co Kg

Inventors

• Felder Johann

Classifications

• B21D5/02 Primary

  on press brakes without making use of clamping means · CPC title

• B21D37/145 Primary

  Die storage magazines · CPC title

• B21D37/04

  Movable or exchangeable mountings for tools · CPC title

• Y10T483/10

  Process · CPC title

• Y10T483/13

  with control means energized in response to activator stimulated by condition sensor · CPC title