JP2005329527A - Shot blast device, projection material circulating unit of shot blast device and cabinet of short blast device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shot blast device compact as a whole by allowing narrowing of a space for installing the device and lowering of the height of the device. <P>SOLUTION: This shot blast device is provided with one or a plurality of projection devices 2 mounted on a cabinet 1, a workpiece carrying and holding part in the cabinet 1 to carry the workpiece, and a projection material circulating unit for recovering projection materials projected to the workpiece to be returned to the projection devices 2. The projection material circulating unit is provided with: one or a plurality of first projection material carrying means 5 horizontally provided in a lower part in the cabinet 1 to collect the projection materials at one portion outside the cabinet 1; one or a plurality of second projection material carrying means 7 provided outside the cabinet 1 to carry the projection materials collected at the one portion upward; and one or a plurality of projection material separators 11 communicated with the second projection material carrying means 7 to separate impurities from the projection materials supplied to the projection devices 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an improvement in an apparatus for shot blasting.

2. Description of the Related Art Conventionally, a shot blasting device using a nozzle type projection device is known in order to shot blast a workpiece with a relatively small amount of projection. A shot blasting device using an impeller type projection device is known in order to shot blast a workpiece with a relatively large amount of projection. These shot blasting devices are a projection material circulation unit that performs projection processing on a workpiece placed on a workpiece conveyance holding unit in the cabinet from a projection device mounted on the cabinet with a projection material, and collects the projection material and returns it to the projection device. (For example, refer to Patent Document 1).
However, in the shot blasting device described in Patent Document 1, a large amount of projection material is collected to collect a large amount of projection material projected from the impeller type projection device, so that the height of the device becomes high. was there. In particular, when a plurality of impeller-type projection devices are used, the device becomes even larger.
For this reason, the shot blasting apparatus has a problem that a large space for installation is necessary. Furthermore, for transportation, it is necessary to assemble and test-run once, and then disassemble and transport part of the equipment, which takes time for equipment installation work such as pit construction, or for factory relocation. It took time to install the shot blasting device due to the time taken for the dismantling work involved.

Japanese Patent Laid-Open No. 11-239773, FIG.

  The present invention has been made to solve the above problems, and the present invention can provide a compact shot blasting apparatus that can reduce the installation space, reduce the height of the apparatus, and is compact as the entire apparatus. The purpose is to do. It is another object of the present invention to provide a blasting apparatus that does not require a part of the apparatus to be disassembled and transported after it has been assembled and tested. Furthermore, an object of the present invention is to provide a shot blasting apparatus that does not require time for installation work of the apparatus such as pit construction. Still another object of the present invention is to provide a projection material circulation unit and cabinet suitable for the shot blasting apparatus.

In order to achieve the above object, the shot blasting apparatus according to the present invention is characterized in that the projection material circulation unit is made as small and compact as possible.
Specifically, the projection material circulation unit is provided horizontally in the lower part of the cabinet and collects the projection material at one place outside the cabinet. One or a plurality of second projection material conveying means provided outside the cabinet, and communicating with the second projection material conveying means, while conveying the projection material collected at the location upward, and the projection device And one or more projection material separators for separating impurities from the projection material supplied to the projector.
Moreover, it is preferable that the projection material circulation unit of the present invention has a structure in which a projection material separator is provided below the upper wall surface of the cabinet. Further, the projection material separator is disposed at a position equal to or lower than an opening / closing gate that opens and closes a passage connecting the second projection material conveying means and the projection device, and communicates with the passage above the opening / closing gate. Thereby, a projection apparatus and a projection material separator can be arrange | positioned under the 2nd projection material conveyance means at the same height, and the height of a machine can be made low.
For this reason, since the height of the 2nd projection material conveyance means can be made low and a transport distance becomes short, the motive power of the 2nd projection material conveyance means can be minimized.
When the projection gate is projected onto the workpiece by opening the opening / closing gate, a part of the projection material overflows from the opening / closing gate, and the overflowed projection material is supplied to the projection material separator. On the other hand, when the open / close gate is closed, such as when a workpiece is loaded or unloaded, all of the projection material is supplied to the projection material separator.
In order to achieve the above object, the projection material circulation unit according to the present invention includes one or two projection material separators and a projection device for the plurality of first projection material conveyance means and second projection material conveyance means. And the projection material is supplied from the second projection material conveying means to each projection device.
In order to achieve the above object, the projection material circulation unit in the present invention is provided with one or two projection material separators for the plurality of first projection material conveyance means and second projection material conveyance means, A projection material is supplied from the projection material separator to each projection device.
When a single projection material separator is used, this makes it possible to omit one of the projection material separators and ensure a wide projection space in the cabinet.
Moreover, in order to achieve said objective, the projection material circulation unit in this invention is a screw conveyor by which the 2nd projection material conveyance means was provided vertically. Conventionally, since a bucket elevator has been used, the apparatus becomes large, and it has been necessary to throw it out from a high position onto the projection material separator. In contrast, in the present invention, the screw conveyor has a compact structure and is not obliquely conveyed, so that the projection material can be transported to the upper wall of the cabinet of the shot blasting apparatus at the shortest distance.
Furthermore, in order to achieve the above object, the cabinet of the shot blasting apparatus according to the present invention has a lower section of the cabinet having a plurality of grooves, and the first projecting material conveying means is provided in parallel to each of the plurality of grooves. It is characterized by being. Thereby, rather than using one large first projection material conveyance means, the height of the first projection material conveyance means itself can be lowered. Furthermore, since the lower cross section of the cabinet has a plurality of grooves, the lower part of the cabinet can be made compact and the cabinet itself can be made lower than the case where the same inclination is used to collect the grooves. Preferably, the lower cross section of the cabinet is W-shaped or M-shaped with the top and bottom reversed. Note that the same inclination is used in consideration of the angle of repose of the projection material, in order to consider the downward flow of the projection material and the angle at which the lifetime of the projection material is extended. This inclination angle is preferably 20 to 40 degrees.
Further, the cabinet is characterized in that at least one of the plurality of first projecting material conveying means is provided with overload preventing means for preventing overload. This is to prevent the projection material from concentrating on one first projection material conveyance means because the conveyance capacity is small as a price for reducing the size of the first projection material conveyance means. More specifically, the cabinet of the blasting device is provided with a partition at the central top of the W cross section and the like so as to flow evenly in the left and right grooves. In addition, a bypass is created to transport the overflow of one groove to another groove. A partition is provided in each groove to adjust the flow of the projection material into the groove. Make the projection amounts of multiple projectors the same. Thus, there are various overload prevention means.
Depending on the product shape and the like, the size of the plurality of grooves can be changed, and the size of the projection material conveying means can be changed. However, in order to make it compact, it is preferable that the plurality of projection material conveying means have the same capacity.

The present invention can narrow a space for installation, reduce the height, and provide a shot blasting apparatus that is compact as a whole. In addition, the present invention provides a blasting apparatus that does not require a part of the apparatus to be disassembled and transported after being assembled and tested. Furthermore, the present invention provides a shot blasting apparatus that does not take time for installation work of the apparatus such as pit construction.

Furthermore, this invention provides the projection material circulation unit and cabinet suitable for said shot blasting apparatus.

Hereinafter, the best mode for carrying out the present invention will be described. The shot blasting apparatus of the present invention projects a workpiece placed on a work conveyance holding unit in the cabinet from a plurality of projection devices mounted on the cabinet with a projection material, and collects the projection material to the projection device. A projection material circulation unit to be returned is provided.
The projection material circulation unit is provided horizontally at the lower part in the cabinet and collects the projection material at one place outside the cabinet, and a plurality of first screw conveyors,
A plurality of second screw conveyors provided outside the cabinet while conveying the projection material collected in one place vertically upward, and a projection communicated with the second screw conveyor and supplied to the projection device One or a plurality of projection material separators for separating impurities from the material.
And the lower cross section of a cabinet has a some groove | channel (substantially W shape), and the said screw conveyor is provided in parallel with respect to each of a some groove | channel.
Here, in the present invention, the shot blasting device includes a shot blasting device and a shot peening device for polishing. In the present invention, the shot blasting apparatus does not include a dust collector unless otherwise specified.
The cabinet of the shot blasting apparatus of the present invention refers to an enclosure that defines a projection space. The separator can be provided inside the cabinet and can be configured such that the separator cannot be seen in appearance.

Further, the projection device is an impeller type or a nozzle type. Further, since the projection device is mounted on the side wall of the cabinet, the height of the device can be reduced. In particular, since the impeller type has a larger projection device than the nozzle type, it is very effective to reduce the height of the shot blasting device by mounting the projection device on the side wall instead of the upper wall of the cabinet.
When a plurality of projectors are mounted on the side wall of the cabinet, the projector becomes more compact. A work conveyance holding part is a part which carries out a projection process with a projection material in a cabinet. Depending on the form of the work transfer holding unit, the inside and outside of the cabinet can be connected without breaks.

The work conveyance holding unit can be selected from a conveyor type, a hanger type, a table type, and a drum type. The projection material circulation unit is a unit that collects the projected projection material and returns it to the projection device.

Embodiments will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a first embodiment of the present invention. In FIG. 1, a shot blasting apparatus includes two impeller-type projection apparatuses 2 and 2 mounted on a side wall of a cabinet 1, a hanger-type work conveyance holding unit 3 that conveys a work in the cabinet 1, and the work And a projection material circulation unit R that collects the projection material projected on the impeller and returns it to the impeller type projection devices 2 and 2. In addition, the lower surface of the cabinet 1 has a W-shaped inclined surface of a plurality of grooves, and is provided with two first projecting material conveying means 5 and 5 including screw conveyors 4 and 4. And the lower end of the cabinet 1 and the 1st projection material conveyance means 5 and 5 exists above a floor level or a base stand level, and a pit is unnecessary.
As shown in FIG. 2, the projection material circulation unit R of the present invention is provided horizontally in the lower part in the cabinet 1 and collects the projection material in one place outside the cabinet 1. A first projecting material conveying means 5, 5 comprising four, and a second projecting material comprising two screw conveyors 6, 6 provided outside the cabinet 1 for transporting the projecting material collected in one place upward. Projection material transport means 7 and 7, and two projection material separators 11 and 11 that communicate with the second projection material transport means 7 and 7 and separate impurities from the projection material supplied to the projection devices 2 and 2; It has.
Further, motors M, M are connected to the upper parts of the screw conveyors 6, 6, and chutes 8, 8 are connected to the opposite side of the motor M, and the lower ends of the chutes 8, 8 are connected to the lower ends of the chutes 8, 8. An open / close gate 9 for opening and closing a passage including a chute 8 connecting the impeller type projection devices 2 and 2 and the screw conveyors 6 and 6 is connected. The opening degree of the open / close gate 9 is adjustable. Projection material introduction pipes 10 and 10 are connected to the lower end of the open / close gate 9, and the introduction pipes 10 and 10 are connected to the impeller type projection devices 2 and 2.
The projection material separators 11 and 11 are provided below the chutes 8 and 8 and separate impurities from the projection material supplied to the impeller type projection devices 2 and 2. The projection material separators 11 and 11 are partially incorporated in the cabinet 1 at a position lower than the opening / closing gate 9. Therefore, it is provided below the upper wall surface of the cabinet 1. In the present invention, the opening / closing gate 9 is opened and the projection material is supplied to the impeller type projection devices 2 and 2, and when projecting onto the workpiece, the projection material overflows from the opening / closing gate 9 and overflows. A projection material is supplied to the projection material separators 11 and 11.
In FIG. 1, a projection chamber 12 in which a projection material is projected onto a workpiece and a carry-in / out chamber (not shown) are formed inside the cabinet 1. In the projection chamber 12 and the carry-in / out chamber, hangers 13 and 13 constituting the workpiece transfer holding unit 3 for suspending the workpiece are arranged, and the hangers 13 and 13 are arranged in the cabinet 1. It is suspended by the revolution board (not shown) of a part so that rotation is possible. The revolution plate is rotated by a motor 14 around a revolution shaft (not shown). The hangers 13, 13 are connected to a rotating plate disposed above the upper revolving plate in the cabinet 1, and the rotating plate is rotated by a conventional motor on the projection chamber 12 side. It has become so.

The blast material circulation unit R of the shot blasting device configured as described above operates as follows. First, the projection material is projected onto the workpiece placed on the workpiece conveyance holding unit 3 in the cabinet 1 by the two impeller type projection devices 2 and 2 mounted on the cabinet 1 of the shot blasting device. The projection material falls downward due to gravity, travels along the inclined surfaces of the plurality of grooves in the lower part of the cabinet 1, and is supplied to the two first projection material conveying means 5 and 5 including the screw conveyors 4 and 4. At this time, since the cabinet 1 of the blasting device is provided with a partition at the central top of the W cross section, it flows evenly in the left and right grooves, and overloading of the screw conveyors 4 and 4 can be prevented.
Collected at two locations outside the cabinet 1 by two first projecting material conveying means 5 and 5 provided horizontally at the lower part in the cabinet 1.
Next, the projection materials collected at the two locations are connected to the upper portions of the screw conveyors 6 and 6 by the two second projection material conveying means 7 and 7 provided outside the cabinet 1. When the projection material is supplied to the impeller type projection devices 2 and 2 and projected onto the workpiece by opening the opening and closing gate 9 connected to the lower ends of the chutes 8 and 8 through the shoots 8 and 8, the opening and closing gate 9, a part of the projection material is overflowed, and the overflowed projection material is supplied to the projection material separators 11 and 11. For this reason, since not all the projection materials are supplied to the projection material separator, the projection material separator can be made compact. Next, the projection material that has passed through the projection material separators 11 and 11 is sent to the projection material sieving device 15 installed on the side of the cabinet to separate impurities, and the screws of the first projection material conveying means 5 and 5. Returned to conveyors 4 and 4.
In this way, the projection material is circulated by the projection material circulation unit R of the shot blasting apparatus.
As is apparent from the above description, in this embodiment, the projecting material circulation unit R is provided horizontally at the lower portion in the cabinet 1 and collects the projecting material at one location outside the cabinet 1. From the first projection material conveying means 5 and 5 comprising the conveyors 4 and 4 and the two screw conveyors 6 and 6 provided outside the cabinet 1 while conveying the projection material collected in one place upward. Since the second projection material conveyance means 7 and 7 are used, the height of the first projection material conveyance means itself can be made lower than when one large first projection material conveyance means is used. Furthermore, since the lower cross section of the cabinet 1 has a plurality of grooves, the lower portion of the cabinet 1 can be made more compact and the cabinet 1 itself can be made lower than when the same inclination is used to collect the grooves.
In addition, since all the projection materials are not supplied to the projection material separator every time, the projection material separator can be made compact.

As described above, in the present embodiment, the two first projecting material transporting means 5, 5 that are provided horizontally in the lower portion of the cabinet 1 and collect the projecting material at one location outside the cabinet 1, and the one location. The blast material collected in the above is transported upward and communicated with the two second blast material transport means 7, 7 provided outside the cabinet 1 and the second blast material transport means 7, 7. The two projection material separators 11 and 11 for separating impurities from the projection material supplied to the impeller type projection devices 2 and 2 are provided, and the projection material circulation units R are all set as separate paths. It may be one. In this case, when the projection material is supplied to the impeller type projection devices 2 and 2 and projected onto the workpiece by opening the opening and closing gate 9 from the upper part of the second projection material conveying means 7 and 7, the opening and closing gate 9 A part of the projection material may be overflowed, and the overflowed projection material may be passed through one projection material separator and supplied to two impeller-type projection devices.
Further, in this embodiment, the shot blasting projection apparatus is an impeller type, and two projection apparatuses are provided one on the left and one on the left. However, two projection apparatuses on the left and right or two on the left may be arranged in the vertical direction.
In this embodiment, the impeller type projection devices 2 and 2 are used as the projection means, but the present invention is not limited to this, and for example, a nozzle type projection device that injects the projection material from the nozzle together with the compressed air is used. You may do it.

The second embodiment will be described below with reference to the drawings. FIG. 3 is a schematic cross-sectional view of the first embodiment of the present invention. In FIG. 3, the shot blasting apparatus includes two nozzle type projection apparatuses 22 and 22 mounted on a cabinet 21, a table type work conveyance holding unit 23 that conveys a work in the cabinet 21, And a projection material circulation unit S that collects the projected projection material and returns it to the nozzle type projection devices 22 and 22. Further, the lower portion of the cabinet 21 is a groove formed by an inclined surface, and a first projecting material transport means 25 including a single screw conveyor 24 is provided. Further, the lower ends of the cabinet 21 and the first projection material transport means 25 are above the floor level or the base platform level, and no pit is required.
In the cabinet 21, a table 26 that constitutes a work transfer holding unit 23 for carrying the work W into the projection chamber and a small table 27 are disposed above the table 26.
As shown in FIG. 4, the projection material circulation unit S of the present invention is provided horizontally at the lower part in the cabinet 21 and from one screw conveyor 24 that collects the projection material at one place outside the cabinet 21. First projecting material transporting means 25, and second projecting material transporting means 29 comprising one screw conveyor 28 provided outside the cabinet 21 while transporting the projecting material collected in one place upward, , And a second projection material separator 33 (see FIG. 5) that communicates with the second projection material conveying means 29 and separates impurities from the projection material supplied to the projection devices 22 and 22. A motor M is connected to the upper part of the screw conveyor 28, and a chute 30 is connected to the opposite side of the motor M, and the lower ends of the chute 30 are connected to the nozzle type projectors 22 and 22, respectively. An open / close gate 31 for opening and closing a passage including a chute 30 connecting the screw conveyor 28 is connected. The opening degree of the open / close gate 31 is adjustable. A projecting material introduction pipe 32 is connected to the lower end of the open / close gate 31, and the introduction pipe 32 is connected to the two nozzle type projectors 22 via a distribution box 34.
Further, as shown in FIG. 5, the projection material separator 33 is provided in communication with the lower side surface of the chute 30 and separates impurities from the projection material supplied to the nozzle type projection devices 22 and 22. The projection material separator 33 is built in the cabinet 21 at a position lower than the opening / closing gate 31. Therefore, it is provided below the upper wall surface of the cabinet 21. In the present invention, when projecting the projection material onto the workpiece by opening the opening / closing gate 31, the projection material overflows from the opening / closing gate 31, and the overflowed projection material is passed through the chute 30 and the projection material. The separator 33 is supplied.

The blast material circulation unit S of the shot blasting device configured as described above operates as follows. First, the projection material is projected onto the workpiece placed on the table-type workpiece conveyance holding unit 23 in the cabinet 21 by the nozzle type projection devices 22 and 22 mounted on the cabinet 21 of the shot blasting device. The projection material falls downward due to gravity, travels along the inclined surface of the lower groove of the cabinet 21, and is supplied to one first projection material conveying means 25 including one screw conveyor 24.
Collected at one location outside the cabinet 21 by one first projection material conveying means 25 provided horizontally at the lower part in the cabinet 21.
Next, the opening gate 31 and the chute provided in the upper part of the shot blasting apparatus are arranged so that the projection material collected in one place by the one second projection material conveying means 29 provided outside the cabinet 21. 30 is supplied to the nozzle type projection devices 22, 22 and the projection material separator 33.
And the projection material supplied to the projection material separator 33 isolate | separates an impurity, and is supplied to the 1st 1st projection material conveyance means 25 which consists of the said 1 screw conveyor 24. FIG.
In the present invention, when the projection gate is projected onto the workpiece by opening the gate 31 for opening and closing the passage connecting the nozzle type projection device 22 and the screw conveyor 28, a part of the projection material is caused to overflow from the gate 31. The overflowing projection material is supplied to the projection material separator 33 through the chute 30.
For this reason, since not all the projection materials are supplied to the projection material separator, the projection material separator can be made compact.

As is clear from the above description, in the present embodiment, the projection material circulation unit S is provided with the projection material separator 33 below the upper wall surface of the cabinet 21, so that the entire shot blasting apparatus becomes compact. .
In addition, since not all the projection material is supplied to the projection material separator, the projection material separator itself can be made compact.
Further, in this embodiment, the lower part of the cabinet is a groove with one inclined surface, but the present invention is not limited to this, and the groove is composed of a plurality of inclined surfaces such as a W shape. But you can. Therefore, you may make it provide the several 1st projection material conveyance means which consists of several screw conveyors. Moreover, it is preferable to provide a partition at each central portion of the plurality of inclined surfaces.
In this embodiment, the nozzle type projection device is used as the projection means. However, the present invention is not limited to this. For example, an impeller type projection device that projects the projection material with the centrifugal force of the impeller is used. May be.

Embodiment 3 will be described below with reference to the drawings. FIG. 6 is a schematic cross-sectional view of a third embodiment of the present invention. In FIG. 6, the shot blasting device includes one impeller type projection device 42 mounted on the side wall of the cabinet 41, a workpiece conveyance holding unit 43 that conveys the workpiece in the cabinet 41, and projects the workpiece. A projection material circulation unit T that collects the projected material and returns it to the impeller type projection device 42. In addition, the lower portion of the cabinet 41 is a groove formed by an inclined surface, and one first projection material conveying means 45 including one screw conveyor 44 is provided. Further, the lower ends of the cabinet 41 and the first projection material conveying means 45 are above the floor level or the base platform level, and no pit is required.
In the cabinet 41, a drum 46 constituting a work conveyance holding unit 43 for carrying a work to a projection position is disposed.
As shown in FIG. 7, the projection material circulation unit T of the present invention is provided horizontally at the lower part in the cabinet 41 and from one screw conveyor 44 that collects the projection material at one place outside the cabinet 41. First projecting material transporting means 45, and second projecting material transporting means 48 for transporting the projecting material collected in one place upward and comprising one screw conveyor 47 provided outside the cabinet 41, And a second projection material separator (not shown) that communicates with the second projection material conveying means 48 and separates impurities from the projection material supplied to the projection device 42. A motor M is connected to the upper part of the screw conveyor 47, and a chute 49 is connected to the opposite side of the motor M. The impeller projection device 42 and the screw conveyor are connected to the lower end of the chute 49. An open / close gate 50 that opens and closes a passage connecting 47 is connected. The opening degree of the open / close gate 50 is adjustable. A projecting material introduction pipe 51 is connected to the lower end of the open / close gate 50, and the introduction pipe 51 is connected to the impeller type projection device 42.
The projection material separator communicates with the lower side surface of the chute 49 and is provided in the cabinet 41 to separate impurities from the projection material supplied to the impeller type projection device 42.
Furthermore, in this embodiment, the dust collector 52 is integrally connected to the cabinet 41, and the dust collector 52 communicates with the shot blast main body at the upper portion thereof, and the dust-containing air flows downward from above. A dust collector 52 is further provided for collecting dust dust at a lower portion of the dust collector 52.

The projecting material circulation unit T of the shot blasting apparatus configured as described above operates as follows. First, the projection material is projected onto the workpiece placed on the table-type workpiece conveyance holding unit 43 in the cabinet 41 by one impeller projection device 42 mounted on the cabinet 41 of the shot blasting device. The projection material falls downward due to gravity, travels along the inclined surface of the groove at the bottom of the cabinet 41, and is supplied to one first projection material conveyance means 45 including one screw conveyor 44. Collected at one location outside the cabinet 41 by one first projecting material conveying means 45 provided horizontally at the lower part in the cabinet 41.
Next, the open / close gate 50 and the chute provided in the upper part of the shot blasting apparatus are arranged so that the projection material collected in the one place by the second projecting material transport means 48 provided outside the cabinet 41. 49 is supplied to the impeller type projection device 42 and the projection material separator.
And the projection material supplied to the projection material separator isolate | separates an impurity, and is supplied to the 1st 1st projection material conveyance means 45 which consists of the said 1 screw conveyor 44. FIG.
In the present invention, when the opening / closing gate 51 that opens and closes the passage connecting the impeller type projection device 42 and the screw conveyor 48 is opened and the projection material is supplied to the impeller type projection device 42 and projected onto the workpiece, the opening / closing gate 50 is provided. Then, a part of the projection material is overflowed, and the overflowed projection material is supplied to the projection material separator through the chute 49. For this reason, since not all the projection materials are supplied to the projection material separator, the projection material separator can be made compact.
On the other hand, in this embodiment, the dust collector 52 is integrally connected to the cabinet 41, and the dust collector 52 is communicated with the shot blast main body at the upper portion thereof, and the dust-containing air flows downward from above. Since the dust collector 52 in which the dust collector is collected at the lower part of the dust collector 52 is further provided, it is not necessary to install the dust collector separately from the shot blaster, and a compact shot blasting device with a dust collector can be realized.
In this way, the projection material is circulated and the dust is collected by the projection material circulation unit of the shot blasting apparatus.

Further, in this embodiment, the lower part of the cabinet is a groove with one inclined surface, but the present invention is not limited to this, and the groove is composed of a plurality of inclined surfaces such as a W shape. But you can. Therefore, you may make it provide the several 1st projection material conveyance means which consists of several screw conveyors. Moreover, it is preferable to provide a partition at each central portion of the plurality of inclined surfaces.
In this embodiment, the impeller-type projection device 42 is used as the projection means. However, the present invention is not limited to this. For example, a nozzle-type projection device that ejects the projection material from the nozzle together with the compressed air is used. May be.
Furthermore, there is an excellent effect that a compact shot blasting device with a dust collector can be realized.

In the embodiment of the present invention, the work conveyance holding unit is a hanger type, a table type, and a drum type, but a conveyor type may be used for the work conveyance holding unit.

  In the present invention, the workpiece can be applied to various types of materials such as metal products, plastic products, ceramic materials and products, glass, regardless of whether they are ferrous or non-ferrous.

1 is a schematic diagram of a shot blasting apparatus according to Embodiment 1. FIG. 1 is a schematic view of a projection material circulation unit used in Embodiment 1. FIG. 3 is a schematic view of a shot blasting apparatus used in Example 2. FIG. 6 is a schematic view of a projection material circulation unit used in Embodiment 2. FIG. 3 is a schematic view of a projection material separator used in Example 2. FIG. 6 is a schematic view of a shot blasting apparatus used in Example 3. FIG. 6 is a schematic view of a projection material circulation unit used in Example 3. FIG.

Explanation of symbols

1, 2, 41 Cabinet 2 Impeller type projection device 3 Work conveyance holding unit 4, 6, 24, 28, 44, 48 Screw conveyor 5, 25, 45 First projection material conveyance means 7, 29, 49 Second projection material conveyance Means 11, 33 Projection material separators R, S, T Projection material circulation units 22, 43 Work conveyance holding unit 23 Work conveyance holding unit 42 Impeller type projection device 53 Dust collector

Claims (18)

The shot blasting device has one or a plurality of projection devices mounted on a cabinet, a workpiece conveyance holding unit that conveys the workpiece in the cabinet, and collects the projection material projected on the workpiece to collect the projection material. In a shot blasting device provided with a projection material circulation unit to be returned to the projection device,
The projection material circulation unit is provided horizontally in the lower part in the cabinet and collects the projection material in one place outside the cabinet, or one or a plurality of first projection material conveying means,
One or a plurality of second projection material conveying means provided outside the cabinet while conveying the projection material collected in the one place upward,
One or more projection material separators that separate the impurities from the projection material that is communicated with the second projection material conveying means and that is supplied to the projection device;
A shot blasting apparatus comprising:   2. The shot blasting apparatus according to claim 1, wherein the projection material separator is provided below an upper wall surface of the cabinet.   The projection material separator is disposed at a position equal to or lower than an opening / closing gate that opens and closes a passage connecting the second projection material conveying means and the projection device, and communicates with the passage above the opening / closing gate. The shot blasting apparatus according to claim 1 or 2, wherein the shot blasting apparatus is characterized.   The projection material circulation unit is provided horizontally in the lower part of the cabinet, and the projection material collected in one place outside the cabinet, and the projection material collected in the one place vertically upward The shot blasting device according to any one of claims 1 to 3, further comprising: a second projecting material transport unit for transporting; and a projecting material separator communicated with the second projecting material transport unit. . The projection material circulation unit is provided such that a plurality of first projection material conveyance means and second projection material conveyance means are shared for the plurality of projection devices,
One or two projection material separators and a projection device are provided for the plurality of first projection material conveyance devices and the second projection material conveyance device, and the projection material is supplied from the second projection material conveyance device to each projection device. The shot blasting apparatus according to claim 1, wherein the shot blasting apparatus is supplied.   The shot blasting device according to any one of claims 1 to 5, wherein the second projecting material conveying means is a screw conveyor provided vertically. The lower cross section of the cabinet has a plurality of grooves, and the first projection material conveying means is provided in parallel to each of the plurality of grooves. The shot blasting device described. 8. The shot blasting apparatus according to claim 1, wherein at least one of the plurality of first projecting material conveying means is provided with an overload prevention means for preventing overload. The projection material circulation unit is provided such that a plurality of first projection material conveyance means and second projection material conveyance means are shared for the plurality of projection devices,
One or two projection material separators are provided for the plurality of first projection material conveyance means and second projection material conveyance means, and the projection material is supplied from the projection material separator to each projection device. The shot blasting apparatus according to any one of claims 1, 2, and 4. A projection material circulation unit that projects a workpiece placed on a workpiece conveyance holding unit in the cabinet from one or a plurality of projection devices mounted on the cabinet with a projection material, collects the projection material, and returns the projection material to the projection device. In a shot blasting apparatus equipped with
A plurality of first screw conveyors, wherein the projecting material circulation unit is provided horizontally at a lower portion in the cabinet and collects the projecting material in one place outside the cabinet;
One or a plurality of second screw conveyors provided outside the cabinet are transported vertically above the projection material collected at the one place, and communicated with the second screw conveyor and to the projection device One or a plurality of projection material separators for separating impurities from the supplied projection material,
A shot blasting apparatus, wherein a lower section of the cabinet has a plurality of grooves, and the screw conveyor is provided in parallel to each of the plurality of grooves.   The shot blasting device according to any one of claims 1 to 10, wherein the projection device is an impeller type or a nozzle type. The shot blasting device according to any one of claims 1 to 11, wherein the projection device is mounted on a side wall of the cabinet.   The shot blasting device according to any one of claims 1 to 12, wherein the shot blasting projection device is an impeller type, and a plurality of projection devices are arranged in a vertical direction.   The shot blasting apparatus according to any one of claims 1 to 13, wherein the work conveyance holding unit is any one of a conveyor type, a hanger type, a table type, and a drum type.   The shot blasting device according to any one of claims 1 to 14, wherein lower ends of the cabinet and the second projecting material conveying means are above a floor level or a base platform level, and pits are unnecessary. A plurality of projection devices mounted on the cabinet, a workpiece conveyance holding unit that conveys the workpiece in the cabinet, and a projection material circulation unit that collects the projection material projected on the workpiece and returns it to the projection device In shot blasting with
One or two first screw conveyors provided in parallel and horizontally in the one or two grooves in the lower part of the cabinet, and the one or two first screws. One or two second screw conveyors connected to the conveyor and provided parallel and perpendicular to the outside of the cabinet, and one or two units connected to the one or two second screw conveyors, or A plurality of projection material separators and a projection material separator for removing impurities from the projection material supplied to the two projection devices;
Furthermore, a dust collector integrally connected to the cabinet, the dust collector is communicated with the shot blast main body and the upper part thereof, and the dust collector is collected at the lower part of the dust collector,
A shot blasting apparatus comprising:   Projection material circulation in a shot blasting apparatus that projects a workpiece placed in a workpiece conveyance holding unit in the cabinet from a plurality of projection devices mounted on the cabinet with a projection material, and collects the projection material and returns it to the projection device. One or a plurality of first projecting material transporting means which are provided horizontally at the lower part in the cabinet and collect the projecting material at one location outside the cabinet, and the projecting material collected at the one location Impurities from the projection material that is communicated with the second projection material conveyance means and that is supplied to the projection device and is supplied to the projection device. A projection material circulation unit of a shot blasting apparatus, comprising: one or a plurality of projection material separators for separating the projection material. This is a cabinet in a shot blasting apparatus in which a workpiece placed in a workpiece conveyance holding unit in the cabinet is projected by a projection material from a plurality of projection devices mounted on the cabinet, and the projection material is collected and returned to the projection device. And
The cabinet of a shot blasting apparatus, wherein the lower section of the cabinet is W-shaped and has a plurality of grooves, and a first projecting material conveying means is provided in parallel to each of the plurality of grooves. .