WO2012086255A1

WO2012086255A1 - Shot process apparatus

Info

Publication number: WO2012086255A1
Application number: PCT/JP2011/067406
Authority: WO
Inventors: 万俊山本
Original assignee: 新東工業株式会社
Priority date: 2010-12-22
Filing date: 2011-07-29
Publication date: 2012-06-28
Also published as: CN103140327B; CN103140327A; JP2014039960A

Abstract

[Problem] To improve durability of an apron conveyor. [Solution] A shot process apparatus (10) is provided with: a plurality of rotating shaft members (18 to 20) disposed in parallel with each other; an apron conveyor (24) including a caterpillar (48) having a plurality of caterpillar constituting members (52) arranged in a ring, the apron conveyor (24) being extended across the plurality of rotating shaft members (18 to 20) such that a deflection portion (70) is formed in the caterpillar (48) between a pair of the rotating shaft members (18, 19) which is deflected downward in a vertical direction; and a projection unit (26) that projects a projection material against a work placed on the deflection portion (70). In this structure, each of the plurality of caterpillar constituting members (52) can be ruggedly constructed, so that, when compared to the case of using a rubber belt for the apron conveyor (24), for example, improved durability of the apron conveyor (24) can be obtained.

Description

Shot processing device

The present invention relates to a shot processing apparatus.

2. Description of the Related Art Conventionally, an apron blasting machine including an apron-type drum portion having a plurality of drive shafts and a rubber belt wound around the plurality of drive shafts is known (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-347941

However, in this apron blast machine, the drum belt is made of rubber. Therefore, for example, when the object to be processed is a heavy object, the durability of the drum portion becomes a problem.

This invention was made in view of the said subject, Comprising: It aims at improving the durability of an apron conveyor in the shot processing apparatus provided with the apron conveyor for stirring a workpiece | work.

In order to solve the above-described problem, a shot processing apparatus according to claim 1 includes a caterpillar configured to include a plurality of rotating shaft members provided in parallel to each other and a plurality of caterpillar constituent members arranged in an annular shape. An apron conveyor wound around the plurality of rotating shaft members so that a vertical downward bending portion is formed on the caterpillar between a pair of rotating shaft members of the plurality of rotating shaft members; And a projection unit that projects a projection material toward the workpiece placed on the bending portion.

According to this shot processing apparatus, the apron conveyor is provided with a caterpillar having a plurality of caterpillar components arranged in an annular shape. Therefore, since each of the plurality of caterpillar constituent members can be constructed robustly, the durability of the apron conveyor can be improved as compared with, for example, a case where a rubber belt is used for the apron conveyor.

The shot processing apparatus according to claim 2, wherein the apron conveyor is configured to include a plurality of chain constituent members connected to the plurality of caterpillar constituent members, in the shot processing apparatus according to claim 1, The chain has a chain wound around a plurality of rotating shaft members.

According to this shot processing apparatus, the plurality of chain constituent members constituting the chain are connected to the plurality of caterpillar constituent members, respectively. Therefore, it is possible to perform the exchanging operation of the caterpillar component member that needs to be replaced in a state where the chain is wound around the plurality of rotating shaft members. Thereby, the maintainability of an apron conveyor can be improved.

A shot processing apparatus according to a third aspect is the shot processing apparatus according to the first or second aspect, wherein each of the plurality of caterpillar constituent members is made of metal.

According to this shot processing apparatus, since the plurality of caterpillar constituent members are each made of metal, the durability of the apron conveyor can be further improved.

The shot processing apparatus according to claim 4 is the shot processing apparatus according to any one of claims 1 to 3, wherein each of the plurality of caterpillar constituent members is located in the bending portion. The one end of the caterpillar in the rotational direction on one side is shifted to the inside of the caterpillar with respect to the other end of the caterpillar component adjacent to the one side in the rotational direction of the caterpillar. It is configured to overlap in the rotation direction.

According to this shot processing apparatus, one end portion on one side in the rotation direction of the caterpillar constituent member located at the bending portion is more than the other end portion of the caterpillar constituent member adjacent to one end portion on one side in the rotation direction of the caterpillar. In a state shifted to the inside of the caterpillar, the other end overlaps with the direction of rotation of the caterpillar. Therefore, in the bent portion, there is no gap in the rotation direction of the caterpillar between the one end and the other end, so that the work can be prevented from being caught by the caterpillar.

The shot processing device according to claim 5 is the shot processing device according to claim 4, wherein at least one of the one end and the other end is formed with a protruding portion that protrudes toward the other side. Has been.

According to this shot processing apparatus, at least one of the one end and the other end is formed with a protruding portion that protrudes toward the other side. Accordingly, the gap between the one end portion and the other end portion in the thickness direction of the caterpillar can be narrowed, and this also suppresses the biting of the work in the caterpillar.

A shot processing apparatus according to a sixth aspect is the shot processing apparatus according to the fifth aspect, wherein the projecting portion is formed at the one end portion, and each of the plurality of caterpillar constituting members is located at the bending portion. In the caterpillar constituent member adjacent to the caterpillar constituent member, the other surface, which is the surface facing the direction opposite to the rotational direction of the caterpillar in the protruding portion, is located at one end of the caterpillar in the rotational direction. It is set as the structure located back along the rotation direction of the said caterpillar rather than the surface of the other end part of the rotation direction other side of the said caterpillar.

According to this shot processing apparatus, in the caterpillar constituent member located in the bending portion, the other side surface, which is the surface facing the rotation direction of the caterpillar in the protruding portion, is one end on the one side in the rotation direction of the caterpillar. The caterpillar constituent member adjacent to the caterpillar constituent member is positioned rearward along the rotation direction of the caterpillar with respect to the other side surface in the rotation direction of the caterpillar. Thereby, in a bending part, a workpiece | work can be pushed and moved by the surface of the rotation direction of the caterpillar in a protrusion part with the rotation to the other side which is a surface on the opposite side to the rotation direction of a caterpillar. *

A shot processing apparatus according to a seventh aspect is the shot processing apparatus according to the sixth aspect, wherein a surface of the protrusion on the other side in the rotation direction of the caterpillar extends along a thickness direction of the caterpillar. ing.

According to this shot processing apparatus, the surface on the other side in the rotation direction of the caterpillar at the protrusion extends along the thickness direction of the caterpillar. Accordingly, the work can be pushed and moved more effectively on the surface on the other side in the rotation direction of the caterpillar in the protruding portion.

The shot processing apparatus according to claim 8 is the shot processing apparatus according to any one of claims 5 to 7, wherein a convex portion protruding to a front side of the caterpillar is formed at the other end portion. A surface of the convex portion on one side in the rotation direction of the caterpillar is inclined so as to be directed toward one side in the rotation direction of the caterpillar as it goes toward the base end side of the convex portion.

According to this shot processing apparatus, the other end portion of the caterpillar constituent member is formed with a convex portion that projects to the front side of the caterpillar. The surface of the convex portion on one side in the rotation direction of the caterpillar is inclined so as to go to one side in the rotation direction of the caterpillar as it goes toward the base end side of the convex portion. Therefore, in the bending portion, with the rotation of the caterpillar, the workpiece can be smoothly guided to one side in the rotation direction of the caterpillar on the surface on the one side in the rotation direction of the caterpillar in the convex portion.

The shot processing apparatus according to claim 9 is the shot processing apparatus according to any one of claims 1 to 8, wherein the apron conveyor is provided along both widthwise ends of the caterpillar, It has a pair of chains hung around a plurality of rotating shaft members, is arranged on the inner side in the width direction than the connecting portion of the caterpillar with the pair of chains, and forms a recess for accommodating the workpiece with the bending portion A pair of headliners.

According to this shot processing apparatus, the apron conveyor has a pair of head liners that form a concave portion that accommodates the workpiece with the bending portion, and the pair of head liners are connected to the pair of chains in the caterpillar. It is arrange | positioned rather than the width direction inner side. Therefore, by restricting the movement of the workpiece with the pair of head liners, it is possible to suppress the workpiece from interfering with the connecting portion of the caterpillar with the pair of chains. Thereby, the durability of the apron conveyor can be improved.

The shot processing apparatus according to claim 10 is the shot processing apparatus according to any one of claims 1 to 9, wherein each of the plurality of caterpillar constituent members is cut along a rotation direction of the caterpillar. The cross section is a T-shape.

According to this shot processing apparatus, each of the plurality of caterpillar constituent members is orthogonal to a rotation surface formed by the rotation of the caterpillar, and a cross section cut along a surface along the rotation direction forms a T shape. Therefore, since the strength of each caterpillar component can be improved, the durability of the apron conveyor can be improved.

The shot processing apparatus according to claim 11 is the shot processing apparatus according to any one of claims 1 to 10, wherein each of the plurality of caterpillar constituent members is formed of a metal, And a rubber covering portion that covers a contact surface of the main body portion with the workpiece.

According to this shot processing apparatus, since the contact surface with the workpiece in the main body portion of each caterpillar constituent member is covered with the rubber covering portion, it is possible to suppress damage to the workpiece.

As described above in detail, according to the present invention, each of the plurality of caterpillar constituent members can be constructed robustly. For example, as compared with the case where a rubber belt is used for the apron conveyor, the apron is used. The durability of the conveyor can be improved.

It is a front view of a shot processing device concerning one embodiment of the present invention. It is a right view of the shot processing apparatus shown by FIG. It is a top view of the shot processing apparatus shown by FIG. It is a front view of the cabinet with which the shot processing apparatus shown by FIG. 1 was equipped. It is a right view of the cabinet shown by FIG. It is a front view of the peripheral part of the upper door with which the shot processing apparatus shown by FIG. 1 was equipped. It is a right view of the peripheral part of the upper door shown by FIG. It is a front view of the peripheral part of the lower door with which the shot processing apparatus shown by FIG. 1 was equipped. It is a right view of the peripheral part of the lower door shown by FIG. It is a principal part enlarged plan view of the apron conveyor with which the shot processing apparatus shown by FIG. 1 was equipped. It is a principal part expansion right view of the apron conveyor shown by FIG. It is the right view which expanded the principal part of the apron conveyor shown by FIG. It is a front view of the some rotating shaft member with which the shot processing apparatus shown by FIG. 1 was equipped. FIG. 2 is a front view of a bucket loader provided in the shot processing apparatus shown in FIG. 1. It is a right view of the bucket loader shown by FIG. It is a right view which shows the modification of the caterpillar structural member shown by FIG. It is a front view which shows the modification of the shot processing apparatus shown by FIG. FIG. 18 is a right side view of the shot processing apparatus shown in FIG. 17.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

A shot processing apparatus 10 according to an embodiment of the present invention shown in FIGS. 1 to 15 is suitably used for, for example, shot blasting of a medium or large workpiece. The shot processing apparatus 10 includes a cabinet 12 as shown in FIGS. 2 and 5, the cabinet 12 includes an upper door 14, a lower door 16, a plurality of rotating shaft members 18 to 20, an apron conveyor 24, and a projection unit 26.

6 and 7, the upper door 14 opens and closes the upper part of the workpiece entry / exit opening 28 formed in the front portion of the cabinet 12. As shown in FIG. That is, the drive motor 30, the take-up drum shaft 32, and the take-up drum 34 are provided on the upper portion of the cabinet 12. The winding drum 34 is fixed to both ends of the winding drum shaft 32, and the winding drum shaft 32 is rotated by the drive motor 30. One end of a hanging wire 36 is fixed to the winding drum 34, and the other end of the hanging wire 36 is fixed to the upper end of the upper door 14.

When the drive motor 30 is activated, the winding drum 34 is rotated integrally with the winding drum shaft 32. When the take-up drum 34 rotates in the forward direction, the suspension wire 36 is taken up by the take-up drum 34, the upper door 14 is raised, and the upper portion of the opening 28 is opened. On the other hand, when the winding drum 34 rotates in the reverse direction, the suspension wire 36 is pulled out from the winding drum 34, the upper door 14 is lowered, and the upper portion of the opening 28 is closed.

The lower door 16 shown in FIGS. 8 and 9 is disposed below the upper door 14 described above, and opens and closes the lower portion of the opening 28. That is, the drive cylinder 38 is provided in the lower part of the cabinet 12. The drive cylinder 38 includes a cylinder body 40 and a drive shaft 42 that protrudes and immerses in the cylinder body 40. The base end of the cylinder body 40 is fixed to the bottom of the cabinet 12, and the tip of the drive shaft 42 is fixed to the lower door 16.

When the drive shaft 42 is immersed in the cylinder body 40, the lower door 16 is lowered and the lower portion of the opening 28 is opened. On the other hand, when the drive shaft 42 protrudes from the cylinder body 40, the lower door 16 rises and the lower portion of the opening 28 is closed.

In the cabinet 12, when the upper door 14 is lowered and the lower door 16 is raised, the lower end of the upper door 14 and the upper end of the lower door 16 are in close contact with each other, and the outer peripheral portions of the upper door 14 and the lower door 16. And the periphery of the opening 28 are in close contact with each other, whereby the opening 28 is closed in a sealed state.

As shown in FIG. 5, each of the plurality of rotary shaft members 18 to 20 extends in the lateral direction of the cabinet 12 (perpendicular to the paper surface of FIG. 5), and is provided in parallel with each other inside the cabinet 12. . The rotary shaft member 18 is a drive shaft, and is disposed on the upper surface side of the cabinet 12 and on the rear surface side. On the other hand, each of the

rotating shaft members

19 and 20 is a driven shaft. The rotary shaft member 19 is disposed at the center in the vertical direction of the cabinet 12 and on the front side, and the rotary shaft member 20 is disposed at the center in the vertical direction of the cabinet 12 and on the back side.

The plurality of rotating shaft members 18 to 20 are rotatably supported on the side surfaces on both sides as viewed from the front of the cabinet 12. Further, as shown in FIG. 10, the rotary shaft member 18 has drive wheels 44 at both ends thereof, and the

rotary shaft members

19 and 20 have driven

wheels

45 and 46 at both ends thereof, respectively. ing.

11 to 13, the apron conveyor 24 has an endless belt-shaped caterpillar 48 and a pair of chains 50 provided along both ends of the caterpillar 48 in the width direction. The apron conveyor 24 has a symmetrical configuration, and one chain is not shown in FIG.

The caterpillar 48 includes a plurality of caterpillar constituent members 52. Each of the plurality of caterpillar constituting members 52 is made of metal (steel) such as a casting, and is arranged in an annular shape. Further, as shown in FIG. 13, each of the plurality of caterpillar constituting members 52 includes a plate-like portion 54 and a rib 56 protruding from the plate-like portion 54. The cross section cut along the rotation direction (arrow R direction) is T-shaped.

As shown in FIG. 11, the chain 50 includes a plurality of chain constituent members 58 arranged in an annular shape. The chain constituent member 58 has a base portion 60 and a pair of arm portions 62 extending from the base portion 60. A pair of arm portions 62 provided on each of the plurality of chain constituent members 58 is rotated by pins 64 on a base portion 60 provided on the chain constituent member 58 adjacent to the other side in the rotation direction of the caterpillar 48 (arrow R2 side). It is linked movably.

Further, the chain constituent members 58 are connected to each other via a chain 50 and a connecting member 66. The connecting portion 68 of the chain constituent member 58 with the chain 50 is, for example, a fastening portion having a bolt and a nut, and is set at the end of the chain constituent member 58 on the inner side in the width direction. In addition, a head liner 72 described later is disposed on the inner side in the width direction (arrow IN side) of the chain constituent member 58 than the connecting portion 68.

The apron conveyor 24 is supported by a plurality of rotating shaft members 18 to 20 by the above-described chain 50 being wound around the drive wheel 44 and the driven

wheels

45 and 46 shown in FIG. . Further, in the state in which the apron conveyor 24 is supported by the plurality of rotating shaft members 18 to 20 in this way, a vertically downward bending portion 70 is formed between the pair of

rotating shaft members

18 and 19 in the caterpillar 48. ing.

A pair of head liners 72 each formed in a disc shape are provided at both ends in the width direction of the bent portion 70 as shown in FIGS. The pair of headliners 72 are arranged in parallel with the side surface portion of the cabinet 12 and are rotatably supported on the side surface portion of the cabinet 12.

Then, the pair of head liners 72 come into contact with both end portions in the width direction of the bending portion 70 so as to be able to roll, so that the bending portion 70 protrudes downward in the vertical direction as shown in FIG. It is curved. Further, the pair of head liners 72 form a work stirring concave portion 74 that accommodates the work with the bending portion 70. The workpiece stirring recess 74 is opened toward the opening 28 side.

Further, as shown in FIG. 12, each of the above-described plurality of caterpillar constituting members 52 is as follows while being located in the bending portion 70. That is, one end portion 54 A on one side (arrow R 1 side) in the rotation direction of the caterpillar 48 in the plate-like portion 54 is the other end of the plate-like portion 54 formed on the caterpillar constituting member 52 adjacent to one side in the rotation direction of the caterpillar 48. Along the rotational direction of the other end portion 54B and the caterpillar 48 in a state shifted to the inside of the caterpillar 48 having an annular shape from the portion 54B (the portion on the opposite side to the one end portion 54A on the one side in the rotational direction of the plate-like portion 54) Overlap.

Further, as shown in FIG. 13, a first projecting portion 76 as a projecting portion projecting toward the other end portion 54B, which is the counterpart, is formed at the one end portion 54A. On the other hand, on the other end portion 54B, a second projecting portion 78 is formed as a projecting portion that projects toward the one end portion 54A side which is also the counterpart.

Further, while the caterpillar constituting member 52 on which the first protrusion 76 is formed is positioned on the bending portion 70, the other side (the arrow R2 side) which is a surface facing the opposite side to the rotation direction of the first protrusion 76. The surface 76A of the caterpillar 48 is positioned on the other side in the rotation direction of the caterpillar 48 with respect to the surface 52A on the other side in the rotation direction of the caterpillar 48 in the caterpillar component 52 adjacent to the one side in the rotation direction of the caterpillar 48 (arrow R1 side). The surface 76A on the other side of the caterpillar 48 in the rotation direction of the first protrusion 76 extends along the thickness direction of the caterpillar 48 (arrow T direction). That is, the surface 76 A on the other side in the rotation direction of the caterpillar 48 in the first protrusion 76 is substantially perpendicular to the surface 54 C of the plate-like portion 54. In addition, the surface 52A on the other side of the caterpillar component 52 in the rotation direction of the caterpillar 48 also extends in the thickness direction (arrow T direction) of the caterpillar 48.

Further, the other end portion 54B is formed with a convex portion 80 protruding to the front side of the caterpillar 48. A surface 80 A on one side in the rotation direction of the caterpillar 48 in the convex part 80 is inclined so as to go to one side (arrow R 1 side) in the rotation direction of the caterpillar 48 toward the base end side of the convex part 80.

As shown in FIG. 5, the projection unit 26 is provided on the upper surface of the cabinet 12. The projection unit 26 is a centrifugal projection type, but may be an air projection type. The projection unit 26 is configured to project a projection material from above the bending portion 70 toward a work (not shown) placed on the bending portion 70.

The cabinet 12 includes a plurality of rotating shaft members 18 to 20, an apron conveyor 24, and an upper body portion including a projection unit 26, and a chute 81 that collects the projection material and sends the projection material to a projection material circulation device described later. It can be divided into lower body parts including

In addition to the above-described components, the shot processing apparatus 10 has the following components.

That is, as shown in FIG. 1, a lower screw conveyor 82 is provided at the lower part of the cabinet 12 (projection chamber), and a bucket elevator 84 is provided on the left side of the lower screw conveyor 82. An upper screw conveyor 86 is connected to the upper portion of the bucket elevator 84, and a separator 88 is connected to the upper screw conveyor 86. The separator 88 is connected to the projection unit 26 through a foreign matter extraction pipe 90, a hopper 92, a flow rate adjusting device 94, and an introduction pipe 96.

Further, on the front side of the cabinet 12, there are a workpiece loading device 98 for loading workpieces, a pallet loading device 100 for conveying pallets to the workpiece loading device 98, an oscillating conveyor 104 for unloading workpieces, and an oscillating conveyor 104. A carry-out side pallet 106 for receiving the workpiece is provided.

Further, as shown in FIG. 2, the cabinet 12 is provided with a sand removal pipe 110 and a sand receiving box 112 under the sand removal pipe 110. Further, as shown in FIG. 3, a control panel 114 is provided outside the cabinet 12.

In the shot processing apparatus 10, the workpiece is shot blasted in the following manner.

That is, the loading-side pallet 102 into which the workpiece is loaded by the pallet loading device 100 is loaded into the bucket of the workpiece loading device 98 together with the pallet, and the drive motor 108 of the workpiece loading device 98 is opened with the upper door 14 and the lower door 16 opened. Is activated. Then, the bucket of the workpiece loading device 98 is lifted and reversed, and only the workpiece in the loading-side pallet 102 is loaded into the workpiece stirring recess 74 in the cabinet 12.

At this time, the apron conveyor 24 is rotated forward in the direction in which the work is lifted to the back of the cabinet 12 (in the direction of arrow R1), and the work loading process is completed. Simultaneously with the activation of the work loading device 98, a projection material circulating device (not shown) is activated, and the upper screw conveyor 86, the bucket elevator 84, and the lower screw conveyor 82 are activated in this order.

Next, the drive motor 108 of the workpiece input device 98 is reversely operated, the bucket is inverted and lowered to return to the original position, the carry-in pallet 102 is carried out of the bucket, and the carry-in pallet 102 is returned to the take-out position.

During this time, the upper door 14 and the lower door 16 are closed, and at the same time, the projection unit 26 is activated, and after a certain period of time, the caterpillar 48 is rotated in the direction when it is turned on (arrow R1 direction). Then, while the caterpillar 48 is rotated, the flow rate adjusting device 94 is opened, and the projection material stored in the hopper 92 is supplied to the projection unit 26 through the introduction pipe 96 and subjected to the polishing process.

At this time, the caterpillar 48 is rotated forward so that each caterpillar constituting member 52 moves from the rotating shaft member 19 to the rotating shaft member 18 in the bending portion 70, so that the workpiece is stirred while falling. Then, in a state where the work is being stirred while being overturned, the projecting material is projected onto the work and subjected to a polishing process.

When the polishing process is completed, the flow rate adjusting device 94 is closed and the projection unit 26 is stopped. Then, after the projection material is removed from the apron conveyor 24, the apron conveyor 24 is stopped.

Next, after the upper door 14 and the lower door 16 are opened and the oscillating conveyor 104 is started, the apron conveyor 24 is rotated in reverse by inching. At this time, the caterpillar 48 rotates in the reverse direction (arrow R2 direction) to the time of the polishing process, that is, the caterpillar constituting member 52 is rotated so as to move from the rotating shaft member 18 to the rotating shaft member 19 in the bending portion 70. Thus, the workpiece is discharged from the concave portion 74 for stirring the workpiece.

Although not particularly shown, a lead is provided on a part of the apron conveyor 24, and this lead promotes the stirring of the workpiece when the apron conveyor 24 rotates in the forward direction, and accelerates the discharge of the workpiece when the apron conveyor 24 rotates in the reverse direction. May be.

Then, all the work is unloaded to the unloading side pallet 106 at the unloading end of the oscillating conveyor 104, and the operation is completed.

In addition, the flow of the projection material at the time of the above cleaning is as follows.

That is, the projection material is projected into the cabinet 12 by the projection unit 26. The projected blast material flows to the lower screw conveyor 82 by the lower chute 81, is sent to the bucket elevator 84, rises, and flows to the upper screw conveyor 86.

Then, the projection material is separated from the fine powder and sand by the separator 88, and only the usable projection material is stored in the hopper 92. On the other hand, at the time of polishing, the flow rate adjusting device 94 is opened. Thereby, the projection material passes through the introduction pipe 96 and flows again to the projection unit 26, and the projection material is re-projected by the projection unit 26.

For example, foreign matters such as burrs and wires separated by the separator 88 are discharged from the foreign matter extraction pipe 90 to the foreign matter receiving box and discarded. Further, fine powder such as sand passes through the sanding pipe 110 and is discharged to the sand receiving box 112 and discarded. The sucked air and fine powder are separated into air and fine powder by a dust collector. And air is discharged | emitted to air | atmosphere, and a fine powder is discharged | emitted by the dust receiving box under a dust collector, and is discarded.

Next, the operation and effect of one embodiment of the present invention will be described.

According to the shot processing apparatus 10 according to an embodiment of the present invention, a workpiece can be put into the workpiece agitation recess 74, and the apron conveyor 24 can be rotated to agitate the workpiece while being overturned. And since a blasting material is projected to the place which is stirring a workpiece | work and a workpiece | work is blasted, a workpiece | work can be finished without a non-uniform | heterogenous polishing.

Moreover, since the workpiece | work is discharged | emitted from the recessed part 74 for workpiece | work stirring by rotating the apron conveyor 24 reversely at the time of a blasting process, it can suppress that the workpiece | work which should be discharged | emitted in the recessed part 74 for workpiece | work stirring remains. .

Further, in the cabinet 12, the opening 28 is closed in a sealed state by the upper door 14 and the lower door 16 at the time of polishing, so that the projection material projected toward the work is prevented from being scattered outside the cabinet 12. Can do.

Further, as shown in FIG. 12, the apron conveyor 24 includes a caterpillar 48 having a plurality of caterpillar constituting members 52 arranged in an annular shape. Therefore, since each of the plurality of caterpillar constituting members 52 can be constructed robustly, for example, the durability of the apron conveyor 24 is improved as compared with the case where a rubber belt is used for the apron conveyor 24. Can do.

Moreover, since the plurality of caterpillar components 52 are each made of metal, the durability of the apron conveyor 24 can be further improved.

Further, the apron conveyor 24 has a pair of head liners 72 that form a work stirring concave portion 74 that accommodates the work together with the bending portion 70, and each head liner 72 has a caterpillar 48 as shown in FIG. 11. Are arranged on the inner side in the width direction (arrow IN side) than the connecting portion 68 with the pair of chains 50 in FIG. Therefore, by restricting the movement of the workpiece by the headliner 72, it is possible to suppress the workpiece from interfering with the connecting portion 68 of the caterpillar 48 with the pair of chains 50. Thereby, durability of the apron conveyor 24 can be improved more.

Further, as shown in FIG. 13, each of the plurality of caterpillar constituting members 52 is orthogonal to a rotation surface formed by the rotation of the caterpillar 48, and a cross section cut along a surface along the rotation direction forms a T shape. is doing. Therefore, the strength of each caterpillar component 52 can be improved, and the durability of the apron conveyor 24 can be further improved.

Further, as shown in FIG. 11, the plurality of chain constituent members 58 constituting the chain 50 are connected to each of the plurality of caterpillar constituent members 52 by connecting members 66. Accordingly, the caterpillar component member 52 that needs to be replaced can be replaced while the chain 50 is wound around the plurality of rotating shaft members 18 to 20 (see FIG. 5). Thereby, the maintainability of the apron conveyor 24 can also be improved.

Further, as shown in FIG. 13, one end portion 54 A of the caterpillar constituent member 52 located in the bending portion 70 shown in FIG. 5 is adjacent to the one side (arrow R 1) in the rotation direction of the caterpillar 48. The other end portion 54 B and the caterpillar 48 overlap with each other in a state of being shifted to the inside of the caterpillar 48 with respect to the other end portion 54 B of 52. Therefore, in the bending portion 70, there is no gap in the rotation direction (arrow R direction) of the caterpillar 48 between the one end portion 54A and the other end portion 54B, so that the biting of the workpiece in the caterpillar 48 can be suppressed. .

Further, a first projecting portion 76 and a second projecting portion 78 projecting toward the other side are formed on the one end portion 54A and the other end portion 54B. Accordingly, the gap between the one end portion 54A and the other end portion 54B in the thickness direction (arrow T direction) of the caterpillar 48 can be narrowed, so that also the work between the caterpillar component members 52 of the caterpillar 48 can be reduced. Biting can be suppressed.

Further, in the caterpillar constituting member 52 located in the bending portion 70, the surface 76 A on the other side in the rotation direction of the caterpillar 48 in the first protrusion 76 is adjacent to the one side (arrow R 1) in the rotation direction of the caterpillar 48. The component member 52 is positioned on the other side (arrow R2 side) in the rotation direction of the caterpillar 48 than the surface 52A on the other side in the rotation direction of the caterpillar 48. Accordingly, in the bending portion 70, the rotation direction of the caterpillar 48 in the first projecting portion 76 as well as the end surface 52 A on the other side in the rotation direction of the caterpillar component 52 in accordance with the rotation of the caterpillar 48 toward the other side. The workpiece can also be pushed and moved on the other surface 76A. Thereby, discharge | emission of a workpiece | work can be accelerated | stimulated.

Moreover, the surface 76A on the other side in the rotation direction of the caterpillar 48 in the first projecting portion 76 extends along the thickness direction (arrow T direction) of the caterpillar 48. Therefore, the work can be more effectively pushed and moved on the surface 76A on the other side in the rotation direction of the caterpillar 48 in the first protrusion 76.

Further, the other end portion 54 B of the caterpillar constituting member 52 is formed with a convex portion 80 that projects to the front side of the caterpillar 48. A surface 80 A on one side in the rotation direction of the caterpillar 48 in the convex part 80 is inclined so as to go to one side (arrow R 1 side) in the rotation direction of the caterpillar 48 toward the base end side of the convex part 80. Therefore, in the bending portion 70, the work can be smoothly guided to one side in the rotation direction of the caterpillar 48 by the surface 80 A on the one side in the rotation direction of the caterpillar 48 in the convex portion 80 as the caterpillar 48 rotates. Thereby, discharge | emission of a workpiece | work can be promoted more.

Next, a modification of one embodiment of the present invention will be described.

In the above embodiment, each of the plurality of caterpillar constituting members 52 may have a main body portion 120 formed of metal and a rubber covering portion 122, as shown in FIG. The covering portion 122 only needs to cover at least the contact surface 120A of the main body portion 120 with the workpiece.

According to this modification, the contact surface 120A of the caterpillar constituting member 52 with the workpiece 120 in the main body 120 is covered with the rubber covering portion 122, so that damage to the workpiece can be suppressed.

Further, each of the plurality of caterpillar constituting members 52 may have only one of the first projecting portion 76 and the second projecting portion 78.

Further, the shot processing apparatus 10 may be configured to have the appearance shown in FIGS. In the modification shown in FIGS. 17 and 18, the same reference numerals are given to configurations having the same functions as those in the above embodiment, and the description thereof is omitted.

Further, the shot processing apparatus 10 may be used not only for the shot blasting process but also for the shot peening process.

Further, the caterpillar 48 may be provided in the opposite direction to the above embodiment. With this configuration, the workpiece is pushed and moved by the end surface 52A on the other side in the rotation direction of the caterpillar component 52 and the surface 76A on the other side in the rotation direction of the caterpillar 48 in the first protrusion 76 during the polishing process. Therefore, stirring of the workpiece can be promoted.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

This application is based on Japanese Patent Application No. 2010-286656 filed on December 22, 2010 in Japan, the contents of which form part of the present application.
The present invention will also be more fully understood from the detailed description herein. However, the detailed description and specific examples are preferred embodiments of the present invention and are described for illustrative purposes only. This is because various changes and modifications will be apparent to those skilled in the art from this detailed description.
The applicant does not intend to contribute any of the described embodiments to the public, and the disclosed modifications and alternatives that may not be included in the scope of the claims are equivalent. It is part of the invention under discussion.
In this specification or in the claims, the use of nouns and similar directives should be interpreted to include both the singular and the plural unless specifically stated otherwise or clearly denied by context. The use of any examples or exemplary terms provided herein (eg, “etc.”) is merely intended to facilitate the description of the invention and is not specifically recited in the claims. As long as it does not limit the scope of the present invention.

DESCRIPTION OF SYMBOLS 10

Shot processing apparatus

18, 19, 20 Rotary shaft member 24 Apron conveyor 26 Projection unit 48 Caterpillar 50 Chain 52 Caterpillar structural member 54A One end part 54B Other end part 58 Chain structural member 68 Connection part 70 Deflection part 72 Head liner 74 For workpiece | work stirring Recess 76 First protrusion (protrusion)
78 Second protrusion (protrusion)
80 Convex part 120 Body part 122 Covering part

Claims

A plurality of rotating shaft members provided in parallel with each other;
A caterpillar comprising a plurality of caterpillar constituting members arranged in an annular shape is formed, and a vertical downward bending portion is formed on the caterpillar between a pair of rotating shaft members of the plurality of rotating shaft members. An apron conveyor wound around the plurality of rotating shaft members,
A projection unit that projects a projection material toward the workpiece placed on the bending portion;
A shot processing apparatus comprising:
The apron conveyor is configured to include a plurality of chain components connected to each of the plurality of caterpillar components, and includes a chain wound around the plurality of rotation shaft members.
The shot processing apparatus according to claim 1.
The plurality of caterpillar components are each made of metal.
The shot processing apparatus according to claim 1 or 2.
While each of the plurality of caterpillar constituent members is located at the flexure portion, one end portion of the caterpillar rotation direction on one side thereof is adjacent to the one side of the caterpillar rotation direction on the other end portion of the caterpillar component member. More than the other end portion and the caterpillar in the rotational direction in a state shifted to the inside of the caterpillar,
The shot processing apparatus according to any one of claims 1 to 3.
At least one of the one end and the other end is formed with a protrusion that protrudes toward the other side.
The shot processing apparatus according to claim 4.
The protrusion is formed at the one end;
While each of the plurality of caterpillar constituting members is located in the bent portion, the other side surface, which is a surface facing the opposite direction to the rotation direction of the caterpillar in the projecting portion, is one of the rotation directions of the caterpillar. In the one end portion on the side, the caterpillar component member adjacent to the caterpillar component member is positioned rearward along the rotation direction of the caterpillar than the surface of the other end portion on the other side in the rotation direction of the caterpillar member.
The shot processing apparatus according to claim 5.
The other side surface, which is the surface facing the direction opposite to the rotation direction of the caterpillar in the protrusion, extends along the thickness direction of the caterpillar,
The shot processing apparatus according to claim 6.
The other end portion is formed with a convex portion protruding to the front side of the caterpillar,
The surface on one side in the rotation direction of the caterpillar in the convex portion is inclined so as to go to one side in the rotation direction of the caterpillar as it goes toward the base end side of the convex portion.
The shot processing apparatus according to any one of claims 5 to 7.
The apron conveyor is provided along both ends in the width direction of the caterpillar, and has a pair of chains wound around the plurality of rotating shaft members,
A pair of headliners that are disposed on the inner side in the width direction than the connecting portion with the pair of chains in the caterpillar, and that form a recess that accommodates the workpiece with the bending portion;
The shot processing apparatus according to any one of claims 1 to 8.
Each of the plurality of caterpillar constituent members is orthogonal to a rotation surface formed by the rotation of the caterpillar, and a cross section cut along a surface along the rotation direction forms a T shape.
The shot processing apparatus according to any one of claims 1 to 9.
Each of the plurality of caterpillar components is
A main body formed of metal,
A rubber covering portion that covers a contact surface of the main body portion with the workpiece;
The shot processing apparatus according to any one of claims 1 to 10.