Component feeding device, and component mounting device

Patent metadata

Field	Value
Publication number	US-9968019-B2
Application number	US-201414893733-A
Country	US
Kind code	B2
Filing date	May 22, 2014
Priority date	May 31, 2013
Publication date	May 8, 2018
Grant date	May 8, 2018

Abstract

A component feeding device transports a tape (a component feeding tape) in which electronic components are stored with some transportation device, and exposes the components. Transportation of the component feeding tape may be performed by fitting a sprocket with a feed hole of the component feeding tape. It has been found that sprocket does not necessarily fit with the feed hole of the component feeding tape. It has been found that this phenomenon takes place in a case of driving at least two or more sprockets with a driving device. When the sprocket does not fit with the feed hole, transportation of the tape is not correctly performed, but exerts an undesirable influence such as reduction of mounting efficiency on feeding of the components and subsequent mounting of the components. One feature resides in rendering a backlash of an upstream-side sprocket larger than a backlash of a downstream-side sprocket.

First claim

The invention claimed is:

1. A component feeding device comprising:
a first drive sprocket for transporting a component feeding tape; and
a second drive sprocket arranged on a downstream side beyond the first drive sprocket, wherein
a first backlash that is a clearance of meshing with a power transmission portion of the first drive sprocket is larger than a second backlash that is a clearance of meshing with a power transmission portion of the second drive sprocket.

2. The component feeding device according to claim 1 ,
further comprising a first driving portion for rotating the first drive sprocket and the second drive sprocket, wherein
the first driving portion reversely rotates the first drive sprocket and the second drive sprocket.

3. The component feeding device according to claim 2 ,
further comprising a link mechanism connecting the first drive sprocket, the second drive sprocket and the first driving portion with each other.

4. The component feeding device according to claim 3 ,
further comprising a sensor for detecting a forward end of the component feeding tape between the first drive sprocket and the second drive sprocket.

5. The component feeding device according to claim 4 ,
further comprising a component exposing device for exposing a component from the component feeding tape between the first drive sprocket and the second drive sprocket.

6. The component feeding device according to claim 5 ,
further comprising a rotator on an upstream side beyond the first drive sprocket.

7. The component feeding device according to claim 6 ,
further comprising a second driving portion for rotating the rotator.

8. The component feeding device according to claim 7 , wherein
the rotator includes a one-way clutch.

9. The component feeding device according to claim 8 , wherein
a difference between the first backlash and the second backlash is larger than a pitch of a feed hole of the component feeding tape.

10. The component feeding device according to claim 1 ,
further comprising a first driving portion for rotating the first drive sprocket and the second drive sprocket, and
having a link mechanism connecting the first drive sprocket, the second drive sprocket and the first driving portion with each other.

11. The component feeding device according to claim 1 ,
further comprising a sensor for detecting the forward end of the component feeding tape between the first drive sprocket and the second drive sprocket.

12. The component feeding device according to claim 1 ,
further comprising a component exposing device for exposing a component from the component feeding tape between the first drive sprocket and the second drive sprocket.

13. The component feeding device according to claim 1 ,
further comprising a rotator on an upstream side beyond the first drive sprocket.

14. The component feeding device according to claim 13 ,
further comprising a second driving portion for rotating the rotator.

15. The component feeding device according to claim 14 , wherein
the rotator includes a one-way clutch.

16. The component feeding device according to claim 1 , wherein
a difference between the first backlash and the second backlash is larger than a pitch of a feed hole of the component feeding tape.

17. A component mounting device comprising:
a component feeding device; and
a component adsorbing/mounting device that mounts a component adsorbed at the component feeding device on a substrate, and
the component feeding device having
a first drive sprocket for transporting a component feeding tape; and
a second drive sprocket arranged on a downstream side beyond the first drive sprocket, wherein

a first backlash that is a clearance of meshing with a power transmission portion of the first drive sprocket is larger than a second backlash that is a clearance of meshing with a power transmission portion of the second drive sprocket.

18. The component mounting device according to claim 17 ,
further comprising a first driving portion for rotating the first drive sprocket and the second drive sprocket, wherein
the first driving portion reversely rotates the first drive sprocket and the second drive sprocket.

19. The component mounting device according to claim 18 ,
further comprising a link mechanism connecting the first drive sprocket, the second drive sprocket and the first driving portion with each other.

20. The component mounting device according to claim 19 ,
further comprising a sensor for detecting a forward end of the component feeding tape between the first drive sprocket and the second drive sprocket.

21. The component mounting device according to claim 20 ,
further comprising a component exposing device for exposing a component from the component feeding tape between the first drive sprocket and the second drive sprocket.

22. The component mounting device according to claim 21 ,
further comprising a rotator on an upstream side beyond the first drive sprocket.

23. The component mounting device according to claim 22 ,
further comprising a second driving portion for rotating the rotator.

24. The component mounting device according to claim 23 , wherein
the rotator includes a one-way clutch.

25. The component mounting device according to claim 24 , wherein
a difference between the first backlash and the second backlash is larger than a pitch of a feed hole of the component feeding tape.

26. The component mounting device according to claim 17 ,
further comprising a first driving portion for rotating the first drive sprocket and the second drive sprocket, and
having a link mechanism connecting the first drive sprocket, the second drive sprocket and the first driving portion with each other.

27. The component mounting device according to claim 17 ,
further comprising a sensor for detecting the forward end of the component feeding tape between the first drive sprocket and the second drive sprocket.

28. The component mounting device according to claim 17 ,
further comprising a component exposing device for exposing a component from the component feeding tape between the first drive sprocket and the second drive sprocket.

29. The component mounting device according to claim 17 ,
further comprising a rotator on an upstream side beyond the first drive sprocket.

30. The component mounting device according to claim 29 ,
further comprising a second driving portion for rotating the rotator.

31. The component mounting device according to claim 30 , wherein
the rotator includes a one-way clutch.

32. The component mounting device according to claim 17 , wherein
a difference between the first backlash and the second backlash is larger than a pitch of a feed hole of the component feeding tape.

Assignees

• Yamaha Motor Co Ltd

Inventors

• Tanokuchi Akito
• Yanagida Tsutomu
• Ohyama Kazuyoshi
• Kano Yoshinori

Classifications

• B65H20/20

  by web-penetrating means, e.g. pins · CPC title

• B65H5/28

  Feeding articles stored in rolled or folded bands · CPC title

• H05K13/022

  with orientation of the elements · CPC title

• H05K13/0417

  Feeding with belts or tapes · CPC title

• H05K13/021

  Loading or unloading of containers (H05K13/028 takes precedence) · CPC title