Blast treatment device and blast treatment method

Patent metadata

Field	Value
Publication number	US-10144112-B2
Application number	US-201514829002-A
Country	US
Kind code	B2
Filing date	Aug 18, 2015
Priority date	Aug 28, 2014
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

According to one implementation, a blast treatment device includes at least one nozzle that injects media toward a workpiece, a first tank that supplies the media to the at least one nozzle, a movement structure that moves the at least one nozzle and the first tank, and a second tank that supplies the media to the first tank. The second tank is not moved by the movement structure.

First claim

What is claimed is:

1. A blast treatment device comprising:
at least one nozzle that injects media toward a workpiece;
a first tank that supplies the media to the at least one nozzle;
a movement structure that moves the at least one nozzle and the first tank; and
a second tank that supplies the media to the first tank through a media supply conduit, the second tank being configured not to be moved by the movement structure, and the first and second tanks and the media supply conduit are configured to have the media supply conduit in a media non-supply mode between the first and second tanks during movement of the movement structure and injection of the media toward the workpiece.

2. The blast treatment device according to claim 1 ,
wherein the first tank is coupled to the second tank by the media supply conduit which is in the form of a hose having a detachable mechanism.

3. The blast treatment device according to claim 2 ,
wherein a capacity of the first tank is made smaller than a capacity of the second tank.

4. The blast treatment device according to claim 3 , further comprising:
a circulating system that recovers the injected media and supplies recovered media to the second tank.

5. The blast treatment device according to claim 4 ,
wherein the circulating system has an impurity separation part that removes, from the recovered media, particles having a size or weight falling below a threshold value with at least one of a cyclone separator and a vibrational sieving machine.

6. The blast treatment device according to claim 2 , further comprising:
a circulating system that recovers the injected media and supplies recovered media to the second tank.

7. The blast treatment device according to claim 6 ,
wherein the circulating system has an impurity separation part that removes, from the recovered media, particles having a size or weight falling below a threshold value with at least one of a cyclone separator and a vibrational sieving machine.

8. The blast treatment device according to claim 1 ,
wherein a capacity of the first tank is made smaller than a capacity of the second tank.

9. The blast treatment device according to claim 8 , further comprising:
a circulating system that recovers the injected media and supplies recovered media to the second tank.

10. The blast treatment device according to claim 9 ,
wherein the circulating system has an impurity separation part that removes, from the recovered media, particles having a size or weight falling below a threshold value with at least one of a cyclone separator and a vibrational sieving machine.

11. The blast treatment device according to claim 1 , further comprising:
a circulating system that recovers the injected media and supplies recovered media to the second tank.

12. The blast treatment device according to claim 11 ,
wherein the circulating system has an impurity separation part that removes, from the recovered media, particles having a size or weight falling below a threshold value with at least one of a cyclone separator and a vibrational sieving machine.

13. The blast treatment device according to claim 12 , wherein the impurity separation part has a first stage removal section based on the weight difference between injected media and resinic particles sourced from the workpiece, and a second stage removal section that is downstream from the first stage removal section and separates, from the recovered media, selected media designed for return to the injection part, with the selected media having a predetermined size range that does not fall below or exceed, respectively, a lower first threshold value and a second, higher threshold value.

14. The blast treatment device according to claim 13 wherein the first stage removal section includes a cyclone separator for separation of resinic particles from injected media based on weight differential.

15. The blast treatment device according to claim 14 wherein the second stage removal section includes a plurality of sieve trays supported on a vibrating body.

16. A blast treatment method that utilizes the blast treatment device of claim 1 , comprising:
supplying media, to the first tank, from the second tank via the media supply conduit; and
manufacturing a blast treated product by supplying the media from the first tank to the at least one nozzle and injecting the supplied media toward a workpiece, with moving the first tank and the at least one nozzle being carried out while the media supply conduit is in a non-media supply mode between the first and second tanks.

17. The blast treatment method according to claim 16 ,
wherein a path length of the media between the first tank and the at least one nozzle is made constant.

18. The blast treatment method according to claim 17 ,
wherein a pathway of the media between the first tank and the second tank is disconnected, by disconnecting the media supply conduit from at least one of the first and second tanks, after supplying the media from the second tank to the first tank and before moving the first tank and the at least one nozzle.

19. The blast treatment method according to claim 18 ,
wherein ceramic particles of which an average particle size is from 106 μm to 150 μm are used as the media,
further comprising:
recovering the injected media;
removing impurities and reduced in size injected media from the recovered media, by a cyclone separator and a vibrational sieving machine; and
supplying the media, from which the impurities and the reduced in size media been removed, to the second tank.

20. The blast treatment method according to claim 17 ,
wherein ceramic particles of which an average particle size is from 106 μm to 150 μm are used as the media,
further comprising:
recovering the injected media;
removing impurities and reduced in size injected media from the recovered media, by a cyclone separator and a vibrational sieving machine; and
supplying the media, from which the impurities and the reduced in size media have been removed, to the second tank.

21. The blast treatment method according to claim 16 ,
wherein a pathway of the media between the first tank and the second tank is disconnected, by disconnecting the media supply conduit from at least one of the first and second tanks, after supplying the media from the second tank to the first tank and before moving the first tank and the at least one nozzle.

22. The blast treatment method according to claim 21 ,
wherein ceramic particles of which an average particle size is from 106 μm to 150 μm are used as the media,
further comprising:
recovering the injected media;
removing impurities and reduced in size injected media from the recovered media, by a cyclone separator and a vibrational sieving machine; and
supplying the media, from which the impurities and the reduced in size media have been removed, to the second tank.

23. The blast treatment method according to claim 16 ,
wherein ceramic particles of which an average particle size is from 106 μm to 150 μm are used as the media,
further comprising:
recovering the injected media;
removing impurities and reduced in size injected media from the recovered media, by a cyclone separator and a vibrational sieving machine; and
supplying the media, from which the impurities and the reduced in size injected media have been removed, to the second tank.

Assignees

• Fuji Heavy Ind Ltd
• Subaru Corp

Inventors

• Kondo Yoshihiko
• Takazawa Hirotsugu
• Matsuo Shinya
• Nakahata Tatsuo

Classifications

• B24C9/006

  Treatment of used abrasive material · CPC title

• B24C9/003

  Removing abrasive powder out of the blasting machine · CPC title

• B24C3/065

  with suction means for the abrasive and the waste material · CPC title

• B24C3/062

  for vertical surfaces · CPC title

• B24C1/06

  for producing matt surfaces, e.g. on plastic materials, on glass · CPC title