JP2893668B2 - 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 blast processing apparatus for processing a workpiece by injecting a fine-powder abrasive at a high speed from a blast gun. The present invention relates to a blast processing apparatus for reducing noise and smoothing the collection of fine powdery abrasive after the above-mentioned work processing.

[0002]

2. Description of the Related Art A conventional blasting apparatus includes, for example, a blast gun for spraying an abrasive, and a bed for mounting and supporting a workpiece (work) to be subjected to predetermined processing by the abrasive from the blast gun. And a hopper provided at a lower portion of the cabinet and for collecting fine powder made of the abrasive used for processing the work or grinding dust of the work processed by the abrasive. Things.

[0003]

By the way, in the above-mentioned prior art, a fine powdered abrasive is injected from a blast gun at a high speed together with compressed air. Accordingly, high frequency noise is emitted from the blast gun, and there is a problem that high frequency noise is troubled for a person who performs a processing operation using the blast processing apparatus. In addition, the abrasive that is ejected at the high speed and collides with the work, floats in the cabinet in a convection state due to its residual energy,
There is a problem that it does not smoothly fall into the lower hopper. That is, there is a problem that the abrasive is not smoothly collected after processing.

[0004] Such a suspended abrasive adheres to an inner wall of a cabinet or an inner wall of a hopper, and thus has a problem of deteriorating the collection efficiency of the abrasive. In particular, the problem of adhesion to the cabinet or hopper becomes a serious problem when dew condensation occurs on the inner wall when the present apparatus is used in a cold region or in cold weather. In order to solve such a problem, an object of the present invention is to provide a blast processing apparatus having a cabinet and a hopper which has an excellent soundproofing function and an excellent ability to collect used abrasives. ).

[0005]

Means for Solving the Problems To solve the above problems, the present invention takes the following measures. That is, a fine powdered abrasive is processed into a work (work).
A blast gun for spraying the workpiece, a bed for supporting the work, and the like, and a cabinet provided inside the cabinet, and a lower part of the cabinet for collecting abrasives, grinding debris, and the like after processing the work. The cabinet is a high-frequency blasting machine including a hopper and a collection duct that is provided continuously with the hopper and that collects the collected abrasives and grinding debris into a collection tank.
And forming at double structure wall to exert a sound blocking function and dew prevention function, in the hopper, rectification device for a laminar flow the flow of air in the lower portion in the space of the hopper and the cabinet it was decided to adopt a configuration in which a so that provided. Further, the inner wall and the hopper of the cabinet are formed of a stainless steel plate so that the abrasive and the grinding dust after the processing do not adhere to the inner wall of the cabinet or the inner wall of the hopper. .

[0006]

According to the present invention, the following effects are exhibited in the present invention. When the abrasive in the form of fine powder is ejected from the blast gun 5, compressed air (high-pressure air) is ejected from the air nozzle 51 at a high speed as shown in FIG. The negative pressure is generated by the high-speed injection of the high-pressure air from the air nozzle 51, thereby injecting the fine powder-like abrasive 7 toward the work 9.
By the way, the injection of the high-pressure air from the air nozzle 51 generates high-frequency noise. However, in the present invention, since the cabinet 1 has a double structure wall, high-frequency sound (ejection sound) is cut off, and almost no noise is transmitted to the outside of the cabinet 1.

Next, the abrasives 7 that have been sprayed, collided with the work 9 and subjected to processing, and the grinding dust 99 and the like from the work 9 become dust and float in the cabinet 1. becomes. in the present invention, the weak negative pressure from collection duct 3 is acting on and within hopper 2 above the cabinet 1, further, within the hopper 2, as shown in FIG. 1, rectification device The provision of the dust 8 allows the dust composed of the abrasive 7 and the like to be smoothly collected from the lower part of the hopper 2 to the collection duct 3. That is, by the action of the rectifying device 8 provided in the hopper 2, the air flow in the hopper 2 and within the cabinet 1,
It becomes a laminar flow state. Therefore, the dust in the floating state rides on the flow of the laminarized air and is drawn to the lower part of the hopper 2. As a result, the abrasive 7 and the like after the grinding process are layered.
It falls in a flowing state and hits the inner wall 21 of the hopper 2. Then, thereafter, it descends along the inner wall 21 and is sucked into the collection duct 3. Due to such an action, the abrasive 7 and the like in the dust state hardly adhere to the inner wall of the cabinet 1 and the inner wall of the hopper 2.

Further, since the cabinet 1 has a double structure wall, the cabinet 1 is excellent in heat insulation and heat insulation. Therefore, even when used in a cold region or in cold weather, dew condensation or the like does not occur in the cabinet 1. Therefore, the abrasive 7
Thus, the problem of adhesion to the cabinet inner wall 11 and the like is also released.

Further, since the inner wall 11 and the hopper 2 of the cabinet 1 according to the present invention are made of a stainless steel plate, the inner wall surfaces are not damaged by the flow of the abrasive 7. Further, the damaged portion does not rust due to the moisture due to the condensation. Therefore, the phenomenon that the abrasive 7 or the like adheres to the damaged portion of the inner wall surface or the rust generating portion does not occur.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The configuration of the present embodiment is processed by a blast gun 5 for spraying a fine powdery abrasive 7 at high speed with compressed air (high-pressure air), and high-speed injection of the abrasive 7 from the blast gun 5. A cabinet 1 containing a bed 6 for supporting a workpiece 9; a hopper 2 provided continuously below the cabinet 1 below the cabinet 1; and a hopper 2 provided continuously below the cabinet 1 below the cabinet 1. , The processed abrasive 7 collected by the hopper 2
It is basically composed of a collection duct 3 for collecting the like.

In such a basic configuration, as shown in FIG. 1, the cabinet 1 has a double-structured wall composed of an inner wall 11 and an outer wall 12, and the inner wall (inner wall).
11 is made of a stainless steel plate. The cabinet 1 is provided with an inspection door 4 for internal inspection, and the inspection door 4 is provided with an inspection window 41 made of transparent glass or the like. Thus, the cabinet 1 has the double structure wall 1
Since they are composed of Nos. 1 and 12, they are excellent in sound insulation function (soundproof function) and also excellent in heat insulation.

The hopper 2 formed continuously below the cabinet 1 composed of the double-structured walls 11 and 12 serves to collect the abrasive 7 and the like sprayed from the blast gun 5. In order to smoothly lower the abrasive 7 and the grinding dust 99 from the work 9 after colliding with the work 9, the surface is always formed of a stainless steel plate which is kept smooth.

[0013] Note that in the hopper 2 and subjected to space hopper 2 from the lower portion space of the cabinet 1, rectification device 8 for the flow of air in laminar flow state is provided. The rectifier device 8, as shown in FIG. 2, in which a number of holes 81 is made of a structure provided on the plate member. The size and arrangement of holes 81 formed in the rectification unit 8 is adapted as follows in this embodiment. That is, the size of the hole diameter is 5 to 8 mm, and such a hole 81 is
It has a configuration in which a large number are provided at intervals of 15 mm. The air in the lower space of the cabinet 1 and the space of the hopper 2 is drawn downward through such a large number of holes 81.

[0014] Thus, by the action of the rectifier device 8, the air flow in the lower part space and the hopper 2 of the cabinet 1 becomes a laminar flow state, so that the thereby be layers Ryuka. Incidentally, the inner wall 2 of the rectification device 8 and the hopper 2
As shown in FIG. 1, a gap 88 is provided between the hopper 2 and the inner wall 21 of the hopper 2.
The abrasive 7 that has fallen upward slides down.

A collection duct 3 is provided below the hopper 2, and the collection duct 3 is connected to a collection tank (not shown) via a cyclone (not shown) or the like. Then, a weak negative pressure is applied to the recovery duct 3 via the cyclone and the like.

Next, provided in the cabinet 1,
A blast gun 5 that injects the abrasive 7 onto the work 9 is an air nozzle 5 that injects compressed air (high-pressure air) at a high speed.
1. An ejector device formed based on an abrasive supply port 52 having an opening at a negative pressure generating portion of the air nozzle 51. Therefore, the air nozzle 5
1 in response to the high-speed injection of air from
A negative pressure is generated on the back surface of the abrasive powder, and the negative pressure causes the abrasive 7 in the form of fine powder to flow through the abrasive supply port 52.
It is to be sucked out and ejected. In addition,
The blast gun 5 can slide on the upper surface of the workpiece 9 by a blast gun moving device 55 and a motor 59 provided on the ceiling of the cabinet 1.

Further, a bed 6 is provided in the cabinet 1 for supporting a work 9 to be ground (processed) by receiving the abrasive 7 from the blast gun 5. The bed 6 holds (supports) the work 9 and can move in a direction perpendicular to the sliding movement of the blast gun 5. That is, the blast gun 5 and the work 9 can be moved relative to each other in the X and Y directions depending on the moving direction of the blast gun moving device 55 and the moving direction of the bed 6.

Next, an operation mode and the like of this embodiment having the above-described configuration will be described. First, when the abrasive 7 in the form of fine powder is ejected from the blast gun 5, compressed air (high-pressure air) is ejected from the air nozzle 51 at a high speed as shown in FIG. A negative pressure is generated in the abrasive supply port 52 by high-speed injection of high-pressure air from the air nozzle 51,
As a result, the fine powdery abrasive 7 is sucked and injected toward the work 9. By the way, the air nozzle 5
High-speed injection of high-pressure air from 1 will generate high-frequency noise. However, in this embodiment,
Since the cabinet 1 in which the blast gun 5 and the like are stored is composed of the double-structured walls 11 and 12, high-frequency sound (injection sound) is cut off.
Hardly propagates as noise to the outside. That is, in this embodiment, a soundproofing effect is exhibited.

Next, the abrasive 7 and the grinding dust 99 from the work 9 after being sprayed and colliding with the work 9 and subjected to the processing become dust and float in the cabinet 1. made, but in the present embodiment, the weak negative pressure from collection duct 3 is acting on and within hopper 2 above the cabinet 1, further, within the hopper 2, rectifying, as shown in FIG. 2 The provision of the device 8 allows the dust composed of the abrasive 7 and the like to be smoothly collected from the lower part of the hopper 2 to the collection duct 3. That is, by the action of the rectifying device 8 provided in the hopper 2, the air flow in the hopper 2 and the cabinet 1, the laminar flow state (see Fig. 1 dashed arrow shown).

Therefore, the floating dust is drawn to the lower part of the hopper 2 along with the flow of the laminarized air. As a result, the abrasive 7 or the like after the grinding process having a certain mass is made laminar and falls, and hits the inner wall 21 of the hopper 2. Then, thereafter, it descends along the inner wall 21 and is sucked into the collection duct 3. In particular, in the present embodiment, the hopper 2 is made of a stainless steel plate, and its surface (inner surface) 21 forms a smooth surface, so that the abrasive 7 smoothly moves on the inner surface. Go to By such an operation, the abrasive 7 and the like in the dust state do not adhere to the inner wall 11 of the cabinet, adhere to the inner wall 21 of the hopper 2, or the like, which is a concern in the related art.

Further, since the cabinet 1 has a double structure wall, the cabinet 1 is excellent in heat insulation and heat insulation. Therefore, even when used in a cold region or in cold weather, dew condensation or the like does not occur in the cabinet 1. Therefore, the problem that the abrasive 7 or the like adheres to the cabinet inner wall 11 or the like due to the occurrence of dew condensation, which is a concern in the related art, is also released.

Further, since the inner wall 11 and the hopper 2 of the cabinet 1 according to the present embodiment are formed of stainless steel plate, the respective inner wall surfaces are damaged (roughened) by the flow of the abrasive 7. ), And the damaged portion does not rust due to the moisture due to the condensation. Therefore, these damaged portions of the inner wall,
The phenomenon that the abrasive 7 adheres to the rust-generating portion can be avoided.

[0023]

According to the present invention, there is provided a cabinet having therein a blast gun for spraying a fine-powder-like abrasive onto a workpiece (work), a bed for supporting the workpiece, and the like; A hopper that is provided at a lower portion and collects abrasives and grinding debris after processing the work, and is provided continuously with the hopper, and collects the collected abrasives and grinding debris to a collection tank. For the blasting device consisting of a collecting duct to be formed, the cabinet is formed by a double-structured wall, and the laminar flow of air in the hopper and in the lower space of the cabinet is formed in the hopper. the rectifier device is provided for, further, since it was decided to employ a configuration which is adapted to form the inner wall and the hopper of the cabinet of stainless steel, or blast gun High-frequency noise caused by the air jet emitted becomes to be blocked by the double structure walls, it has become possible to achieve a noise reduction during blasting.

Also, since the inner wall of the cabinet and the hopper are formed of a stainless steel plate whose surfaces are always kept smooth, it is possible to prevent the abrasive or the like from adhering to the inner wall of the cabinet or the inner wall of the hopper. This makes it unnecessary to separately provide a vibrator, an air injection device, and the like for preventing the adhesion in the present device. As a result, the size of the entire apparatus can be reduced. Further, by the action of the rectification device, the flow of air within the cabinet and in the hopper
Since the laminar flow was formed and the turbulence did not occur, the adherence of the abrasive to the inner wall of the cabinet and the inner wall of the hopper was prevented. In addition, since the abrasives are collected smoothly, dust and the like do not leak out of the cabinet, and the concentration of the abrasives discharged to the outside of the cabinet is reduced to about 1/10 of the regulated value. It was started. As a result, the working environment can be improved, and the device can be used, for example, in a clean room. Moreover, the adoption of the double structure walls, heat insulation is enhanced, cold cold land and will be able to prevent the occurrence of condensation on the cabinet inner wall during cold, polishing whereby the cabinet interior wall also It has become possible to prevent the adhesion of the material.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the overall configuration of the present invention.

2 is a perspective view showing a main part configuration of a rectifying device of the present invention.

[Explanation of symbols]

1 cabinet 11 inside the wall (inner wall) 12 outer wall 2 hoppers 21 the inner wall 3 collection duct 4 inspection door 41 inspection window 5 blast gun 51 the air nozzles 52 abrasive supply port 55 blast gun moving device 59 motor 6 bed 7 abrasive 8 rectification device 81 hole 88 gap 9 work 99 grinding waste

Claims (2)

(57) [Claims] 1. A cabinet provided therein with a blast gun for spraying a fine powdered abrasive onto a work (work) and a bed for supporting the work, and a cabinet provided in a lower portion of the cabinet, In a blast processing apparatus including a hopper that collects abrasives and the like after processing a work, and a collection duct that is provided continuously with the hopper and that collects the collected abrasives and the like into a collection tank, the cabinet And a rectifier for laminarizing the flow of air in the hopper and the lower part of the cabinet in the hopper. A blast processing apparatus, wherein the blast processing apparatus is configured to prevent the abrasive from adhering to the inner wall of the cabinet and the inner wall of the hopper. . 2. A cabinet provided with a blast gun for spraying a fine-powder-type abrasive onto a workpiece (work) and a bed for supporting the workpiece, and a cabinet provided in a lower portion of the cabinet. In a blast processing apparatus including a hopper that collects abrasives and the like after processing a work, and a collection duct that is provided continuously with the hopper and that collects the collected abrasives and the like into a collection tank, the cabinet Is formed by a double-structured wall composed of an inner wall formed of a stainless steel plate and an outer wall provided with an air layer between the inner wall and the inner wall, and the hopper is formed of a stainless steel plate. A rectifying device for laminarizing the air flow in the hopper and the lower part of the cabinet, and comprising a flat plate having a number of holes. And a blast processing apparatus configured to prevent the abrasive from adhering to the inner wall of the cabinet and the inner wall of the hopper.