JP3179338B2 - Blast processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blasting apparatus, and is applied to a case where a general abrasive material containing fine powder is used (since fine powder is mixed). Fine abrasive or workpiece cutting debris, crushed abrasive or other dust (hereinafter simply referred to as "fine powder") generated in a blasting machine which sprays fine abrasive having a fine powder state in which the angle of repose in the abrasive tank is not constant. "
Also called. The present invention relates to a blast device capable of preventing adhesion to a work or another place.

[0002] By the way, a fine abrasive is a particle having a particle size of about # 25.
0 to # 240, that is, the average diameter of the largest particles is about 170 μ or less, the average of the average diameters is about 87.5 μm to 73.5 μm, preferably about 80 μm, and the particle size is about # 3000, that is, the average diameter of the largest particles is about 19 μm or less. , The average of the average diameter is about 5.9μ
研磨 4.7 μm, preferably about 5.0 μm, which means an abrasive having a particle size of about 5-80 μm in terms of average diameter.

[0003] Unlike fine-grained abrasives, these fine-grained abrasives do not flow smoothly to the bottom of the mountain even when they are piled up on a conical mountain, and in an extreme case, the angle is almost vertical. The more the powdered abrasives are stacked, the more the powdered abrasives are adsorbed to each other.

The blasting apparatus of the present invention is of a pneumatic type instead of a centrifugal type, and the pneumatic blasting apparatus generally includes a direct pressure type and a suction type.

[0005]

2. Description of the Related Art As an example of a conventional blasting machine,
The pneumatic gravity blast device 60 will be described.

Referring to FIGS. 4 and 5, a cabinet 61 is shown.
The blast processing chamber has a carry-in port 63 for taking in and out the work, and a spray nozzle 62 for spraying the abrasive onto the work carried in from the carry-in port 63 is provided in the cabinet 61. A hopper 68 is provided at a lower portion of the cabinet 61, and a lowermost end of the hopper 68 communicates with an upper portion of a collection tank 70 for collecting abrasives installed at an upper portion of the cabinet 61 via a conduit 65.

The recovery tank 70 is a so-called cyclone.
This is a device for separating dust from the abrasive, and as shown in FIG. 4, comprises a cylindrical portion having a cylindrical shape at an upper portion, and a conical portion having a conical shape gradually narrowing downward at a lower portion. An inlet 73 is provided on the upper side wall of the cylindrical portion 70,
The front end of the conduit 65 is connected to the inflow port 73 via a communication pipe 75. Since the axial direction of the communication pipe 75 is located in the tangential direction of the inner wall surface forming the circular cross section of the cylindrical portion,
The airflow flowing into the collection tank 70 from the communication pipe 75 descends while rotating along the inner wall of the cylindrical portion. The lower end of the conical portion of the collection tank 70 is provided with an abrasive adjuster 78 for adjusting the amount of abrasive injected from the injection nozzle 62, and the injection nozzle 62 is connected to the abrasive adjuster 78. On the other hand, a connecting pipe 74 is provided substantially at the center of the upper end wall surface of the collection tank 70.
The connection pipe 74 communicates with a dust collector (not shown) via a discharge pipe 67.

The dust collector rotates an exhaust fan (not shown) and discharges air in the dust collector to the outside air. With this exhaust fan, the cabinet 6 of the blast device 60
1. The air in the conduit 65 and the collection tank 70 is sucked, each part becomes negative pressure, and the air supplied from a compressed air supply source (not shown) is jetted together with the abrasive from the jet nozzle 62. Conduit 65 in order from 61,
Airflow flows to the collection tank 70 and the dust collector.

Using the blasting device 60 described above, the work W is carried into the cabinet 61 from the carry-in entrance 63,
When the abrasive is sprayed from the spray nozzle 62 to the surface of the work W to perform blasting, the abrasive sprayed from the spray nozzle 62 breaks into pieces or crushed from the work surface due to the impact when the work W collides. Dust including non-reusable abrasives and other dust is generated and mixed into the reusable abrasives.

The sprayed abrasive and the dust generated at this time fall into a hopper 68 below the cabinet 61 and are sent from a flow inlet 73 to a collection tank 70 through a conduit 65 by an air current generated in the conduit 65. .

The airflow flowing from the inflow port 73 becomes a rotating airflow and descends while rotating along the inner wall surface of the cylindrical portion by centrifugal force. When reaching the conical portion, the conical portion gradually narrows downward. As a result, the radius of rotation of the airflow becomes smaller, and accordingly, the rotation speed gradually increases while descending. Abrasives and dust fall down on this air flow.

When the air flow reaches near the lower end of the conical portion, the air flow reverses and changes direction to become an ascending air flow and rises while slightly rotating the central portion of the recovery tank 70, and the discharge air flows from the connection pipe 74 on the upper end wall of the recovery tank 70. It flows to the dust collector via 67. However, only the dust of the abrasive and the dust that has fallen near the lower end of the conical portion riding on the rotating airflow changes direction and rises on the ascending airflow, but the abrasive does not rise and the rotating airflow flows below the conical portion. , And gradually falls to the lower part of the collection tank 70 to be collected.

On the other hand, the dust is collected together with the updraft by the connecting pipe 7.
From 4, the air is sent to a dust collector via an exhaust pipe 67 and is accumulated in the dust collector, and clean air is discharged from an exhaust fan provided above the dust collector.

[0014]

The conventional blasting apparatus 60 has the following problems, especially when a fine abrasive is used.

Since the fine powder abrasive has a low floating speed, the fine powder sprayed from the spray nozzle floats in the cabinet,
Do not fall immediately. As a result, the field of view in the cabinet (blast processing chamber) is deteriorated, and there is a problem that the blast processing by visually observing the work is hindered.

Since the fine abrasive material has a large surface area per one unit weight, it has a property of easily adhering to any place. In particular, in the case of a plate-like material, the fine powder abrasive wraps around and adheres to the back side. Also, fine powder abrasives are easily affected by static electricity.Even if abrasives adhered by static electricity are removed by static eliminator, static electricity is generated again when they are blown off by air blow, Fine powder adheres. In addition, there is a property that it is more easily adhered when affected by moisture or the like. Therefore, even if air blowing is performed on the workpiece after the blast processing, the soared fine powder adheres to the workpiece or another place such as the inside of the cabinet again, and it is difficult to perform the air blowing sufficiently. there were.

The present invention has been developed in order to solve the above-mentioned problems, and abrasives, particularly fine abrasives or other fine particles made of other dust, sprayed on a work adhere to the work and other places again. It is another object of the present invention to provide a blast processing apparatus which prevents the blast processing and further improves the field of view inside the blast processing chamber to facilitate blast processing.

[0018]

In order to achieve the above object, a blasting apparatus 10 according to the present invention comprises an injection nozzle 21 for injecting a fine abrasive into one end of a blasting duct 11.
And a suction duct 13 for suctioning the fine abrasive material by negative pressure is communicated with the other end of the blasting duct 11. The blasting duct 11 is provided with a blasting chamber 12 in front of the abrasive jet flow jetted from the jet nozzle 21, and a side wall of the blast processing chamber 12 is provided with a blast processing jet in the blast processing chamber 12. An insertion opening 14 for inserting the work W in a substantially orthogonal direction is provided, and an intake gap serving as an intake opening 15 for taking in outside air is formed between the inner periphery of the insertion opening 14 and the outer periphery of the work W.

The blasting chamber 12 includes:
An arbitrary cylindrical body such as a circle or a corner perpendicular to the longitudinal direction of the blasting duct 11 may be formed, and the length of the cylindrical body may be longer than the width of the blasting duct 11.

Further, a work rotating device 34 for rotating the work W inserted into the blasting chamber 12 can be provided, or the blasting duct 11 can be rotated around the work W inserted into the blasting chamber 12. A duct rotation device may be provided.

A moving device 33 for reciprocating the blast processing chamber 12 or the work W so as to reciprocate from one end of the work W inserted into the blast processing chamber 12 to the other end.
Can also be provided.

Further, when the work W or the blasting chamber 12 moves from one end to the other end of the work W, fine abrasive is sprayed from the spray nozzle 21, and when the work W moves backward, the abrasive is sprayed from the spray nozzle 21. It is desirable to provide a control device 30 for stopping the injection.

A plurality of small tables for mounting and rotating the work W are provided. A large table for revolving these small tables is provided. A blasting chamber 12 is provided at one end of the work W mounted on the small table. Insertion slot 1
The blasting chamber 12 may be provided so as to be reciprocally movable from one end to the other end of the work W.

Alternatively, a plurality of small tables for mounting and rotating the blasting chamber 12 are provided, a large table for revolving these small tables is provided, and a work is inserted into the insertion port 14 of the blasting chamber 12 mounted on the small table. The work W may be provided so as to be freely inserted and removed, and the work W may be provided so as to reciprocate from one end of the work W to the other end.

The blasting chamber 12 may be provided with one or two insertion ports 14.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION In the following, an embodiment of a blasting machine according to the present invention will be described with respect to various devices such as an injection nozzle and a recovery tank or an abrasive tank, a dust collector and the like used in a general pneumatic blasting machine. The used one will be described as an example with reference to the drawings.

In this embodiment, the injection nozzle, the recovery tank,
Since the dust collector and the like are the same as those shown in the conventional example, the same members will be described with the same reference numerals.

In FIG. 1, a blasting machine 10 is a cylindrical body having a diameter of about 65 mm and a length of about 350 mm and having a cylindrical shape. A blasting duct 11 with 12 is provided. At one end of the blasting duct 11, an injection nozzle 21 for injecting an abrasive from the blasting chamber 12 toward the other end of the blasting duct 11 is attached via a nozzle mounting member 17. Is connected to a suction duct 13 for sucking the abrasive sprayed from the spray nozzle 21 by negative pressure.

The nozzle mounting member 17 is made of, for example, a rubber-like elastic body, and the nozzle body 23 of the spray nozzle 21 can be inserted into and removed from the nozzle mounting member 17. Alternatively, the nozzle mounting member 17 may be formed of a metal material, and a screw portion on the outer periphery of the nozzle body 23 may be screwed to the nozzle mounting member 17 via a screw portion.

The sectional shape and size of the blasting duct 11 are not particularly limited to the above example.

The blasting chamber 12 is located in front of the abrasive spraying direction from the spray nozzle 21 and forms a cylindrical body orthogonal to the longitudinal direction of the blasting duct 11, and has end walls at both ends. A processing chamber body 16 is formed.
Although the shape and size of the processing chamber body 16 are not limited,
In this embodiment, the processing chamber body 16 has a circular cross section and a diameter of about 95 mm.
mm and a cylindrical shape having a length of 155 mm.

The longitudinal ends of the processing chamber main body 16 are provided with insertion openings 14 for inserting the workpiece W therethrough. The shape of the work W is not limited, such as a flat plate shape, but is a rod shape having a circular cross section in the present embodiment, and outside air is provided between the outer circumference of the work W and the inner circumference of the insertion port 14. An intake gap that serves as an intake port 15 for intake is formed. For example, the insertion port 14 is formed in a circular shape with a diameter of 40 mm, the diameter of the workpiece W is 20 mm, and the suction gap of the suction port 15 is 10 mm.

The injection nozzle 21 is used in a general blasting machine. In this embodiment, compressed air from a compressed air supply source such as a compressor (not shown) is supplied through a compressed air supply pipe 22 to the nozzle body. 23,
When the compressed air is injected from the tip of the nozzle body 23, the inside of the nozzle body 23 becomes a negative pressure, and the negative pressure causes the fine powder abrasive material in the collection tank 70 to communicate with the nozzle body 23 via the abrasive supply pipe 25. Is sucked into the nozzle main body 23, and this fine abrasive is mixed with the compressed air and ejected from the nozzle 24.

On the other hand, the suction duct 13 is connected to a general abrasive classifier. In this embodiment, it communicates with the upper portion of the recovery tank 70 as shown in the conventional example. The abrasive that can be reused in the collection tank 70 is
And the dust is collected at the lower part of the connection pipe 74 together with the rising airflow.
Then, the air is sent to a dust collector via a discharge pipe 67 and collected, and clean air is discharged from a blower provided above the dust collector.

In this embodiment, in FIG. 1, the work W is provided so that the lower end of the work W is gripped and rotated by a work rotating device 34 (not shown). Blasting duct 1
The moving device 33 is provided so as to be able to move up and down so as to move between the insertion openings 14 and 14 between the upper end and the lower end of the work W. Therefore, the injection nozzle 21 and the suction duct 13 attached to the blasting duct 11 also move up and down together with the blasting duct 11.

The operation of the blasting machine 10 of the above embodiment will be described. The lower end of the work W is mounted on the work rotating device 34 in FIG. The blasting duct 11 is lowered by the moving device 33, and the upper end of the work W is inserted into the insertion port 14 on the lower side of the blasting chamber 12 of the blasting duct 11.

Immediately before the work W is inserted into the blasting chamber 12, the fine abrasive is sprayed from the spray nozzle 21 and the suction duct 13 connected to the blasting duct 11 is operated by the operation of the dust collector. The air is sucked through the blast processing chamber 12 through the blast processing chamber 12 so as to have a negative pressure. Therefore, the fine abrasive powder sprayed from the spray nozzle 21 is immediately sucked into the suction duct 13, and the insertion port 14 and the suction port 1 between the inner circumference of the insertion port 14 and the outer circumference of the work W are removed.
From 5, outside air is sucked into the blasting chamber 12, and the inside of the blasting chamber 12 becomes negative pressure.

Accordingly, the fine abrasive blasted from the blast nozzle 21 collides with the workpiece W and rebounds. However, since the outside air flows into the blasting chamber 12 from the insertion port 14, the fine polished abrasive rebounds. And immediately sucked into the suction duct 13, so that it does not jump out of the insertion port 14. In this state, the blasting duct 11 descends so that the upper end of the workpiece W passes through the blasting chamber 12 and passes through the upper insertion port 14. As the blasting duct 11 descends, the outer peripheral surface of the work W is gradually blasted in the blasting chamber 12 from the upper end to the lower end.

After the blasting duct 11 moves forward to the lower end of the work W and the blasting of the work W is completed,
The injection of the fine abrasive material from the injection nozzle 21 is stopped, and the blasting duct 11 is raised toward the upper end of the workpiece W. In other words, the blasting duct 11 is moved back.

While the blast processing duct 11 is moving backward, the inside of the blast processing chamber 12 is sucked through the suction duct 13, so that outside air flows into the blast processing chamber 12 from the intake port 15. Due to this air flow, the outer peripheral surface of the work W is air blown, and the fine abrasive and dust adhering to the outer peripheral surface of the work W are removed by the air flow and transferred from the suction duct 13 to the collection tank 70.

As described above, when the workpiece W inserted into the blasting chamber 12 moves from one end of the workpiece W to the other end, the fine abrasive is injected from the injection nozzle 21 to return the workpiece W. operation that stops the ejection of fine abrasive from the injection nozzle 21, the effective in achieving labor savings if automatically controlled by the controller 30 as shown in Figure 3. Re this.

For example, the aforementioned blasting duct 11
A processing duct position detecting device 31 for detecting the position of
An abrasive injection valve 32 for injecting and stopping the fine abrasive from the injection nozzle 21;
A moving device 33 for reciprocating the blasting duct 11 with respect to the workpiece W is electrically connected to the control device 30, and the control device is controlled by a detection signal of the position of the blasting duct 11 from the processing duct position detecting device 31. 30 can control the operation of the abrasive injection valve 32 and the moving device 33.

The blast device described above further includes:
As shown in FIG. 2, a plurality of small tables 26 for mounting and rotating the work W are provided, and a large table 27 for revolving these small tables 26 can be provided. Then, one end of the work W attached to the small table 26 is provided so as to be insertable into and removable from the blasting chamber 12 through the insertion opening 14 of the blasting duct 11 described above. The plurality of blasting ducts 11 are reciprocated to the end by the small table 2.
6 can be arranged.

In FIG. 2, the large table 27 is provided with eight small tables 26. Of these, four large tables 27 are located at positions corresponding to the four small tables 26 on the right in FIG.
The blasting ducts 11 are arranged so as to be reciprocally movable with respect to each work W in synchronization with the moving device 33 described above.

The suction ducts 13 connected to the blasting ducts 11 are collected in a large-diameter suction duct provided in the center hole of the large table 27. The large-diameter suction duct and the two-dot chain line in FIG. The upper collection tank 7 via the communication pipe
0, and is sent from the collection tank 70 to the dust collector via the discharge pipe 67.

Accordingly, the four blasting ducts 11 are synchronously moved forward by the above-mentioned moving device 33 with respect to the four workpieces W on the right side in FIG. 4 blasting ducts 11
And synchronously return to air blow. Next, the large table 27 is rotated by half a turn, and the four blasting ducts 11 are reciprocated as described above with respect to the other four workpieces W moved rightward on the paper of FIG. And air blow. During this time, the four workpieces W already blasted on the left side of FIG.
The work W to be taken out and then blasted is mounted on each small table 26. By repeating the above operation, a large amount of the workpiece W is efficiently blasted. The number of the small tables 26 and the number of the blasting ducts 11 can be appropriately provided as needed, and are not particularly limited.

Rotating device for large table 27 and small table 2
The rotation device 6 is electrically connected to the control device 30, and the above operation is controlled by the control device 30.

The blasting apparatus of the present invention can be provided in a cabinet of a blasting apparatus having a normal cabinet as shown in the conventional example, and thus has a wide range of application. According to this, it is not necessary to provide a normal cabinet. In both cases, little adhesion of the fine abrasive or other dust to the work or the cabinet is observed.

In the blasting machine of the present invention, the work W is mounted and rotated in the horizontal direction by the work rotating device 34, and the blasting duct 1 is moved by the moving device 33.
The workpiece 1 may be provided so as to reciprocate horizontally from one end to the other end of the work W, and the moving direction of the work W and the reciprocating direction of the blasting duct 11 are not particularly limited. For example, by installing a conveyor line facing the insertion openings 14 and 14 and moving the work, the work can be applied to a work having various shapes by preparing a blasting chamber having a shape corresponding to the work. it can.

Further, in the above-described embodiment, the workpiece W rotates at a fixed position, and the blasting duct 11
However, as another embodiment, the blasting duct 11 is fixed, and the work W is inserted into the blasting chamber 12 from the insertion opening 14 of the blasting duct 11 while rotating. The work W can be reciprocated from one end to the other end.

In another embodiment, the work W is fixed without rotating, and the work W can be inserted into the blasting chamber 12 from the insertion opening 14 of the blasting duct 11 and can be blasted. The duct 11 is provided so as to be movable from one end to the other end of the work W, and may be mounted on a duct rotating device (not shown) for rotating the blasting duct 11 as a whole around the work W.

The blasting chamber 12 may not be provided with the processing chamber main body 16 as described above, but may be simply provided with an insertion opening 14 in the side wall of the blasting duct 11. However, it is necessary to make the longitudinal direction of the processing chamber main body 16 longer than the width direction of the blast processing duct 11 and provide the insertion port 14 in one or both end walls of the processing chamber main body 16 as described above. This insertion port 14 is the injection nozzle 2
Since it is located at a position far from the jet flow of the fine abrasive material from No. 1, it is particularly desirable in that the fine abrasive material that collides with the workpiece W and rebounds does not easily jump out of the blasting chamber 12 from the insertion port 14. .

Further, only one insertion port 14 may be provided on the side wall of the blasting duct 11 or one end wall of the processing chamber body 16 in the longitudinal direction.

[0054]

Since the present invention is configured as described above, it has the following effects.

(1) Even if a fine abrasive is sprayed from a spray nozzle to a work in the blast processing chamber from one end of the blast processing duct, the fine powder is not diffused into the blast processing chamber and the fine powder is dispersed in the blast processing duct. Since the suction is immediately performed from the suction duct communicating with the other end, the visibility of the blast processing chamber corresponding to the inside of the conventional cabinet can be improved, and the sprayed fine powder abrasive does not fly out of the blast processing chamber.

(2) Since an intake port for taking in outside air is formed between the inner periphery of the insertion port provided on the side wall of the blast processing chamber and the outer periphery of the work inserted through the insertion port, the air inside the blast processing chamber is formed. Is sucked from the suction duct, so that the outside air always flows into the blasting chamber from the suction port. Therefore, fine powder such as abrasives that are ejected and rebounded by the work are blocked by the airflow passing through the intake port,
Fine powder such as abrasives does not scatter outside from the air inlet.

(3) The blasting duct of the present invention can provide an inexpensive blasting apparatus without providing a cabinet which is an ordinary large blasting chamber.

(4) For the reasons described in the above item (2), since outside air always flows around the outer periphery of the work, fine particles such as abrasives and dust adhering to the surface of the blasted work are caused by this air flow. Suctioned without spreading. Therefore, the air blow after the blast processing could be effectively applied to the work.

(5) The blasting chamber forms a cylindrical body perpendicular to the longitudinal direction of the blasting duct, and the length of the cylindrical body is formed longer than the width of the blasting duct. Since the insertion port is provided in one or both end walls, the insertion port is located at a position far from the jet flow of the abrasive from the injection nozzle 21, so that the fine powder such as the abrasive which has collided with the workpiece and rebounded from the insertion port. Does not scatter easily out of the blasting chamber.

(6) A work rotating device for rotating a work to be inserted into the blasting chamber or a duct rotating device for rotating a blasting duct around a work inserted into the blasting chamber is provided. And can be processed evenly.

(7) Since the moving device 33 for reciprocating the blasting chamber or the work so as to reciprocate from one end of the work inserted into the blasting chamber to the other end is provided, the work is uniformly processed on the surface of the work. it can.

(8) A control device for injecting the abrasive from the injection nozzle when the work or the blast processing chamber moves from one end to the other end of the work, and stopping the abrasive injection from the injection nozzle when moving backward. Is provided, the workpiece can be blasted when moving from one end to the other end of the workpiece, and when the workpiece is moved backward, the workpiece can be effectively air blown for the reason described in the above item (3).

(9) A plurality of small tables for mounting and rotating a work are provided, and a large table for revolving these small tables is provided. A blasting chamber is provided at one end of the work mounted on the small table with an insertion port of the part. The blasting chamber is provided so as to reciprocate from one end to the other end of the work, so that a plurality of works can be efficiently blasted and air blow can be efficiently performed.

(10) A plurality of small tables for mounting and rotating the blasting chamber are provided, a large table for revolving these small tables is provided, and a work is inserted into and removed from the insertion opening of the blasting chamber mounted on the small table. Freely provided,
In addition, since this work is provided so as to be reciprocally movable from one end of the work to the other end, a plurality of works can be efficiently blasted and air blow can be efficiently performed.

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a cross-sectional view of a blasting machine.

FIG. 2, showing an embodiment of the present invention, is a plan view of a large table provided with a plurality of small tables on which a blasting device is mounted.

FIG. 3 shows an embodiment of the present invention and is a block diagram of a control device.

FIG. 4 is a front view showing a conventional blasting device.

FIG. 5 is a left side view showing a conventional blast processing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Blast processing apparatus 11 Blast processing duct 12 Blast processing chamber 13 Suction duct 14 Insertion port 15 Intake port 16 Processing chamber main body 17 Nozzle mounting member 21 Injection nozzle 22 Compressed air supply pipe 23 Nozzle main body 24 Nozzle 25 Abrasive supply pipe 26 Small table 27 Large table 30 Control device 31 Processing duct position detection device 32 Abrasive material injection valve 33 Moving device 34 Work rotating device 60 Blast processing device 61 Cabinet 62 Injection nozzle 63 Loading port 65 Duct 67 Drain pipe 68 Hopper 70 Recovery tank 73 Inflow port 74 Connecting pipe 75 Communication pipe 78 Abrasive material adjuster

Claims (8)

(57) [Claims] An injection nozzle for injecting fine abrasive is provided at one end of a blasting duct, and a suction duct for sucking the fine abrasive by a negative pressure is communicated with the other end of the blasting duct. The blast processing chamber is provided in front of the abrasive jet flow jetted from the jet nozzle, and an insertion port for inserting a work in a side wall of the blast processing chamber in a direction substantially orthogonal to the abrasive jet flow in the blast processing chamber. A blast processing device, wherein an intake gap is formed between the inner periphery of the insertion opening and the outer periphery of the work to be an intake opening for taking in outside air. 2. The blasting machine according to claim 1, wherein said blasting chamber has a cylindrical body orthogonal to the longitudinal direction of the blasting duct, and has a length longer than the width of the blasting duct. Processing equipment. 3. The apparatus according to claim 1, further comprising a work rotating device for rotating a work to be inserted into the blast processing chamber, or a duct rotating device for rotating a blast processing duct around a work inserted into the blast processing chamber. Blast processing equipment. 4. A moving device 33 for reciprocating the blasting chamber or the work so as to reciprocate from one end to the other end of the work inserted into the blasting chamber. A blast processing device according to any one of the above. 5. A fine powder abrasive is sprayed from the spray nozzle when the work or the blast processing chamber is moved from one end to the other end of the work, and an abrasive is sprayed from the spray nozzle when the work or blast processing chamber is moved backward. 5. The blasting device according to claim 4, further comprising a control device for stopping the injection. 6. A plurality of small tables for mounting and rotating the work, a large table for revolving these small tables is provided, and a blasting chamber is provided at one end of the work mounted on the small table with an insertion port of the part. The blasting chamber according to any one of claims 1 to 5, wherein the blasting chamber is provided so as to reciprocate from one end to the other end of the work. Processing equipment. 7. A small table for mounting and rotating the blasting chamber, a large table for revolving these small tables is provided, and a work is inserted into and removed from an insertion opening of the blasting chamber mounted on the small table. Freely provided,
The blast processing apparatus according to any one of claims 1 to 5, wherein the work is provided so as to be reciprocally movable from one end of the work to the other end. 8. The blasting apparatus according to claim 1, wherein one or two insertion ports are provided in the blasting chamber.