Shot processing machine

Patent metadata

Field	Value
Publication number	US-9884407-B2
Application number	US-201214407386-A
Country	US
Kind code	B2
Filing date	Jul 27, 2012
Priority date	Jun 12, 2012
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

Provided is a shot peening device with which recovered projection material and foreign bodies can be more precisely separated while inhibiting an increase in the size of the device. The shot peening device is provided with: a projector which projects projection material onto a workpiece (W); recovery mechanisms which recover the projection material projected by the projector; and a wind power sorting mechanism in which recovered projection material is allowed to fall freely while an upward air current is applied to the recovered projection material, and foreign bodies included in the recovered projection material are separated from the recovered projection material.

First claim

What is claimed is:

1. A shot processing machine comprising:
a projecting device for projecting blast material onto a workpiece;
a recovery mechanism for recovering blast material blasted by the projecting device; and
an air sorting mechanism for applying an upward air current to recovered blast material and allowing the recovered blast material to fall freely, thereby separating foreign matter mixed into the recovered blast material from that recovered blast material,
the air sorting mechanism comprising;
a freefall zone in which the upward air current is generated, and the recovered blast material is allowed to fall freely; and
a supply portion, a bottom most portion of which communicates with the free fall zone through an opening portion, by which recovered blast material is supplied, wherein the opening portion is formed between a regulator plate disposed to extend in the vertical direction on the free fall zone side of the supply portion, and an inclined portion extending diagonally downward at an incline toward said regulator plate and toward the free fall zone of the supply portion,

the shot processing machine further comprising;
a cabinet within which is formed a blast chamber wherein blast material is blasted, comprising a blast chamber entrance for loading workpieces into the blast chamber, and a blast chamber exit for discharging workpieces from the blast chamber;
a first shot curtain machine for causing blast material to fall in a curtain shape from a top of the blast chamber entrance;
a second shot curtain machine for causing blast material to fall in a curtain shape from a top of the blast chamber exit;
the recovery mechanism for recovering blasted blast material from the blast chamber;
and a distribution box for distributing blast material recovered by the recovery mechanism to the first shot curtain machine and the second shot curtain machine and the air sorting mechanism.

2. A shot processing machine of claim 1 , wherein the air sorting mechanism comprises multiple dispersion rods placed across the free fall zone.

3. A shot processing machine of claim 1 , wherein the air sorting mechanism comprises a concave receiving portion for receiving free fallen blast material, disposed at a bottom of the free fall zone.

4. A shot processing machine of claim 1 , wherein the air sorter mechanism comprises a settling chamber communicating with an upper part of the free fall zone,
and wherein in this settling chamber, a bypass current is created by a guide plate, and foreign matter is separated into powder material carried by the bypass current and granular material, which falls.

5. A shot processing machine of claim 1 , wherein blast material from which foreign matter has been separated by the air sorting mechanism is supplied to the projecting device.

6. A shot processing machine of claim 2 , further comprising:
a conveyor means for conveying workpieces to a position at which blast material is blasted from the projecting device;
whereby the conveyor means comprises:
a chain conveyor belt having a rotationally driven endless chain, and a carrier attached to an outer perimeter of the chain for supporting workpieces;
and a pair of rotating rollers disposed on both sides of the carrier in a direction of workpiece transport, capable of rotating and swinging about an axial line extending in a direction of workpiece transport.

7. A shot processing machine of claim 6 , wherein a variable adjustment mechanism is provided, with which spacing between the pair of rotating rollers can be variably adjusted.

8. A shot processing machine of any of claim 1 , wherein a bottom surface of the shot processing machine is formed to be flat.

9. A shot processing machine of any of claim 1 , further comprising a control device having a calculating section for comparing operating times of consumable parts with which the shot processing machine is equipped to pre-set lifespan times so as to calculate replacement timing for the consumable parts and a display section capable of displaying the calculation results of the calculation section.

10. A shot processing machine of any of claim 1 , further comprising a control device having a memory section into which information on a replacement history of consumable parts in the shot processing machine is input for storing said replacement history information and a display section capable of displaying the replacement history information stored in the memory section.

11. A shot processing machine of claim 2 , wherein the air sorting mechanism comprises a concave receiving portion for receiving free fallen blast material, disposed at a bottom of the free fall zone.

12. A shot processing machine of claim 2 , wherein the air sorter mechanism comprises a settling chamber communicating with an upper part of the free fall zone,
and wherein in this settling chamber, a bypass current is created by a guide plate, and foreign matter is separated into powder material carried by the bypass current and granular material, which falls.

13. A shot processing machine of claim 2 , further comprising;
a cabinet within which is formed a blast chamber wherein blast material is blasted, comprising a blast chamber entrance for loading workpieces into the blast chamber, and a blast chamber exit for discharging workpieces from the blast chamber;
a first shot curtain machine for causing blast material to fall in a curtain shape from a top of the blast chamber entrance;
a second shot curtain machine for causing blast material to fall in a curtain shape from a top of the blast chamber exit;
the recovery mechanism for recovering blasted blast material from the blast chamber;
and a distribution box for distributing blast material recovered by the recovery mechanism to the first shot curtain machine and the second shot curtain machine.

14. A shot processing machine of claim 2 , wherein blast material from which foreign matter has been separated by the air sorting mechanism is supplied to the projecting device.

15. A shot processing machine of claim 1 , further comprising:
a conveyor means for conveying workpieces to a position at which blast material is blasted from the projecting device;
whereby the conveyor means comprises:
a chain conveyor belt having a rotationally driven endless chain, and a carrier attached to an outer perimeter of the chain for supporting workpieces;
and a pair of rotating rollers disposed on both sides of the carrier in a direction of workpiece transport, capable of rotating and swinging about an axial line extending in the direction of workpiece transport.

16. A shot processing machine of any of claim 2 , wherein a bottom surface of the shot processing machine is formed to be flat.

17. A shot processing machine of any of claim 2 , further comprising a control device having a calculating section for comparing operating times of consumable parts with which the shot processing machine is equipped to pre-set lifespan times so as to calculate replacement timing for the consumable parts and a display section capable of displaying the calculation results of the calculation section.

18. A shot processing machine of any of claim 2 , further comprising a control device having a memory section into which information on a replacement history of consumable parts in the shot processing machine is input for storing said replacement history information and a display section capable of displaying the replacement history information stored in the memory section.

Assignees

• Ishikawa Mitsuo
• Yamamoto Takuji
• Sintokogio Ltd

Inventors

• Ishikawa Mitsuo
• Yamamoto Takuji

Classifications

• B24C1/10

  for compacting surfaces, e.g. shot-peening (for deforming sheet metal, tubes or profiles B21D31/06; as a metallurgical treatment C21D7/00, C22F1/00) · CPC title

• B24C9/006 Primary

  Treatment of used abrasive material · CPC title

• Y02P70/179

  Cross-Sectional Technologies · mapped topic

• Y02P70/10

  Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working · CPC title