JPH10166272A - Wet blast device and polishing work method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact blast device and a polishing work method, which allow blasting work without heating a work. SOLUTION: The hand of an operator is inserted through a hand insert 21 and abrasive material is sprayed to a work held in a working tank 9 by the operator for blasting work. A mixed fluid making part makes mixed fluid with abrasive material and water, which is supplied to a mixed fluid spray nozzle in the working tank 9 by a mixed fluid guide part and sprayed to the work. Heat generated when the abrasive material collides with the work is cooled by water, thus to prevent the work from being heated. The work is prevented from high temperature rise, more effectively if it is small or formed of material, easily brittle or fired with heat, in special. The abrasive material sprayed to the work is passed through a reservoir and sprayed again from the mixed fluid spray nozzle 7 to the work. The hand insert is only for fingers, not covering an insert area for the back of a hand, which contributes to the small working tank and therefore to a small blast device as a whole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet blasting apparatus and a polishing method, and more particularly to a method of spraying an abrasive onto a workpiece such as a denture or a decorative article such as a ring used in dentistry. For example, the present invention relates to a wet blast apparatus and a polishing method for performing blast processing to remove an oxide film on the surface.

[0002]

2. Description of the Related Art Conventionally, sand blasting is performed by spraying an abrasive such as alumina oxide or glass beads onto a work having a size that can be pinched by a finger.

[0003] A conventional sand blasting apparatus has, for example, a processing tank in which an injection nozzle for injecting a work and injecting the abrasive to the work is provided therein, and for polishing the abrasive from the abrasive tank. An abrasive supply device is provided for supplying the abrasive material to the spray nozzle.

[0004] On the left and right side surfaces of the processing tank, gloves capable of inserting and removing a worker's hand into and from the processing tank are provided in a sealed state. The operator inserts his hand into the glove, grasps the work in the processing tank with one hand, grasps the spray nozzle in the processing tank with the other hand, and sprays the abrasive from the spray nozzle to the work to sandblast. I do.

[0005]

In the conventional sand blasting apparatus and the conventional sand blasting method, when the abrasive is sprayed on the work, heat is generated when the abrasive collides with the work, so that the abrasive cannot be held by hand. was there.

In addition, there is a problem that it is difficult to process a titanium alloy which is fragile or may ignite when heated by a sand blast method.

[0007] Further, the glove inserts the entire hand, so that the inside of the processing tank becomes large, so that there is a problem that the entire sandblasting apparatus becomes large. In addition, there is a problem that the glove is turned upside down when the hand is removed from the glove after the blasting, so that the glove cannot be easily removed.

The abrasive sprayed onto the workpiece scatters around the inside of the processing tank and adheres to the inner wall surface of the processing tank, so that the inside of the processing tank becomes difficult to see and the abrasive can be easily collected into the abrasive tank. difficult. For example, when an expensive abrasive such as diamond is used, there is a problem that it is difficult to efficiently reuse the diamond.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a compact wet blasting apparatus and a method of processing an abrasive, which can be blasted without heating a work. .

[0010]

In order to achieve the above object, a wet blasting device according to the present invention according to claim 1 is provided.
A mixed fluid creating section of the abrasive and water, and a processing tank for performing blasting of the work, wherein the processing tank is arranged in an upper region of the mixed fluid creating section. Things.

Therefore, the water and the abrasive sprayed in the processing tank in the upper region necessarily fall to the mixed fluid producing section in the lower region, and the recoverability of the abrasive is improved.

According to a second aspect of the present invention, there is provided a wet blasting apparatus for inserting a hand of an operator, and an abrasive is sprayed onto a workpiece held by the hand of the operator inserted from the hand inserting section. In a blasting apparatus comprising a processing tank for performing blasting, and a reservoir for the abrasive,
A mixed fluid creating section for creating a mixed fluid of abrasive and water,
And a mixed fluid introducing section for guiding the mixed fluid to a mixed fluid jet nozzle in a processing tank.

[0013] Therefore, a mixed fluid producing section creates a mixed fluid of abrasive and water, supplies the mixed fluid to the mixed fluid ejecting nozzle by the mixed fluid introducing section, and ejects the mixed fluid from the mixed fluid ejecting nozzle to the work. Therefore, the heat generated when the abrasive collides with the work is not heated because it is cooled by the water. This is particularly effective for a small work, a material that is easily embrittled by heat, or a material that is easily ignited because it prevents the work from becoming hot.

According to a third aspect of the present invention, in the wet blasting apparatus according to the first or second aspect, the mixed fluid creating section mixes an abrasive and water into a cone whose lower side is narrowed, The abrasive is stirred with water.

[0015] Therefore, the stirring in the cone whose bottom is narrowed facilitates the rise of the abrasive submerged at the bottom along the inner surface of the cone, thereby improving the stirring efficiency.

According to a fourth aspect of the present invention, in the wet blasting apparatus according to the first or second aspect, the processing tank is connected to the outside via a pipe having one end immersed in water. It is characterized by the following.

Therefore, when the air discharged from the processing tank passes through the water, the abrasive and scale are removed by the water, and the air is cleaned. The abrasive is reliably recovered and reused.

According to a fifth aspect of the present invention, there is provided the wet blast apparatus according to the first to fourth aspects, wherein a water jet nozzle for washing away the abrasive adhered to the inner surface of the processing tank is provided in the processing tank. It is characterized by having.

Therefore, since the abrasive adhered to the inner surface of the processing tank is reliably washed away, expensive abrasives such as diamonds can be reliably and efficiently recovered. It is easily cleaned at any time.

According to a sixth aspect of the present invention, in the wet blasting apparatus according to the first to fifth aspects, a discharge hole at a bottom portion in the processing tank is connected to a mixed fluid producing section. Is what you do.

Therefore, the water and abrasive sprayed into the processing tank flow out from the discharge hole at the bottom to the mixed fluid producing section, so that the abrasive is efficiently collected and reused.

According to a seventh aspect of the present invention, in the wet blasting apparatus of the first to sixth aspects, the nozzle for jetting the mixed fluid in the processing tank is held at a fixed position by an elastic body. It is a feature.

Therefore, the mixed fluid ejecting nozzle can be easily gripped by the fingers of the hand inserting portion by being located at a fixed position where the mixed fluid ejecting nozzle is easy to work, for example, near the hand inserting portion. Therefore, the nozzle for ejecting the mixed fluid can be easily directed to the work, and the work can be efficiently performed.

According to an eighth aspect of the present invention, there is provided the wet blasting apparatus according to the first to seventh aspects, wherein the mixed fluid producing section of the abrasive and water and overflow water from the mixed fluid producing section are provided. A water tank containing a water tank to be stored therein can be taken out of the blast main body.

Therefore, there are various types of abrasives such as alumina oxide, diamond, glass beads, etc.
Since the water tank can be removed from the blast main body, the abrasive can be easily replaced, and blasting can be easily performed with the abrasive corresponding to the type of the work.

According to a ninth aspect of the present invention, there is provided the wet blasting apparatus according to the first to eighth aspects, wherein an air pipe and a water pipe joint are provided on the upper part of the water tank so as to be movable up and down. It is characterized by being connectable to piping.

Therefore, since the air pipe and the water pipe of the water tank are easily attached to and detached from each pipe of the processing tank, the water tank can be taken out from the blast body. Therefore, the operation and effect described in claim 8 are provided.

According to a tenth aspect of the present invention, in the wet blasting apparatus according to the ninth aspect, one of the upper and lower joints is swingable.

Therefore, the joint can be easily attached and detached, so that the water tank can be more easily taken out from the blast body.

According to an eleventh aspect of the present invention, in the wet blasting device according to the third aspect, the hand insertion portion has an insertion portion for a thumb and another finger without an insertion region for a back of a hand. It is characterized by having.

Therefore, since the hand insertion portion is an insertion portion for fingers only, the processing tank can be made smaller, and the size of the entire blasting device can be reduced.

According to a twelfth aspect of the present invention, in the wet blasting apparatus according to the eleventh aspect, the hand insertion portion can be inserted in a manner in which the thumb and the other four are put together. Things.

Therefore, the operation is the same as that of the eleventh aspect, but it is easy to pull out the finger from the hand insertion portion after the operation is completed in the hand insertion portion in which the thumb and the other four are combined.

According to a thirteenth aspect of the present invention, there is provided the wet blasting apparatus according to the first to twelfth aspects, wherein a magnifying lens is provided at an openable / closable portion of the processing tank. It is.

Therefore, the work in the processing tank is enlarged by the magnifying lens, so that the work can be more easily viewed, and the abrasive can be accurately jetted to a portion to be processed, thereby improving the yield of the abrasive.

According to a fourteenth aspect of the present invention, there is provided the wet blasting apparatus according to the first to thirteenth aspects, further comprising a suction device for applying a negative pressure to the inside of the processing tank.

Therefore, since the inside of the processing tank is under a negative pressure,
The finger can be easily pulled out without turning the finger part of the hand insertion part upside down. In addition, even if the hand insertion part is turned over, it is immediately restored.

According to a fifteenth aspect of the present invention, there is provided a polishing method for injecting an abrasive to a work and injecting the abrasive from the spray nozzle to the work in the polishing method of the present invention. And simultaneously injecting the cooling liquid from the same direction.

Therefore, since the abrasive and the cooling liquid are both injected from the injection nozzle to the work, the heat generated when the abrasive collides with the work is cooled by the cooling liquid and is not heated. This is particularly effective for a small work, a material that is easily embrittled by heat, or a material that is easily ignited because it prevents the work from becoming hot.

According to a sixteenth aspect of the present invention, in the polishing method of the fifteenth aspect, the inside of the processing tank is always kept at a negative pressure.

Therefore, since the inside of the processing tank is under a negative pressure,
The finger can be easily pulled out without turning the finger part of the hand insertion part upside down. In addition, even if the hand insertion part is turned over, it is immediately restored.

[0042]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a wet blasting apparatus according to the present invention will be described below with reference to the drawings.

Referring to FIGS. 13 and 14, in the wet blasting apparatus 1 according to the embodiment of the present invention, the blast main body 3 forms a small, substantially rectangular parallelepiped container. On the upper part of the blast body 3, teeth or dentures used in dentistry,
A processing tank 9 for blasting by injecting an abrasive 5 such as alumina oxide, diamond, or glass beads from a mixed fluid injection nozzle 7 onto a work W such as a small article such as a decorative article is provided.

At the lower part of the blast body 3, the abrasive 5
Various devices for supplying (see FIG. 11) to the mixed fluid ejection nozzle 7 (see FIG. 11) are housed. For example, a storage unit 11 for storing the abrasive 5, a mixed fluid creating unit 13 for creating a mixed fluid of the abrasive 5 and water, and a mixed fluid introduction for guiding the mixed fluid to the mixed fluid jet nozzle 7 in the processing tank 9. Devices such as the unit 15 are stored.

A control box 17 for accommodating a control device for controlling each of the above-mentioned devices is provided on the back of the blast main body 3.
Is provided.

A lid 19 made of a transparent material having a curved shape from the front side to the ceiling is provided on the upper portion of the blast body 3.
Are provided to be freely opened and closed. The cover 19 is preferably provided with a magnifying lens so that the inside of the processing tank 9 can be seen well. By providing the magnifying lens, the work W in the processing tank 9 is enlarged, so that the work W can be more easily seen, so that the yield of the abrasive 5 can be improved.

On the left and right side surfaces of the upper part of the blast body 3, the work W put into the processing tank 9 is grasped by one hand, and the hand of the operator is inserted to hold the injection nozzle with the other hand. Hand insertion part 21 is provided. This hand insertion part 2
Reference numeral 1 denotes a glove made of a resilient material such as rubber, which has an insertion portion for a thumb and another finger without having an insertion region for the back of the hand. Alternatively, the hand insertion section 21
May be provided so that the thumb and the other four can be inserted together. In addition, the base of the hand insertion part 21 is
Is connected and fixed in a sealed state to the side wall.

Referring to FIGS. 6 to 8, the processing tank 9 is fixed in a sealed state made of a transparent material inside the upper inner wall surface of the blast body 3. A discharge hole 23 for discharging the water and the abrasive 5 sprayed from the spray nozzle 7 is provided at the bottom of the inside.

Referring also to FIGS. 4 and 5, a flat block-shaped upper joint 27 is fixed to a frame 25 fixed to the blast main body 3 between the upper and lower parts of the blast main body 3. . A discharge hole 29a is provided at the center of the upper joint 27. Around the discharge hole 29a, an injection air hole 31 communicating with the upper surface of the upper joint 27, and a stirring air communicating with the lower surface of the upper joint 27. Hole 33a, flush air hole 35a and flush water hole 3
7 a and a mixed liquid outlet hole 39 a communicating with the upper and lower surfaces of the upper joint 27. Washing water hole 37a via a hose H ₁ water injection nozzle 59 (see FIG. 12) is communicated with the injection air hole 31 and the stirring air holes 3
3a respectively rinsing air hole 35a is communicated with a compressed air supply source through the air hose _{H 2, H 3, H 4} .

More specifically, referring to FIG. 9, a connecting pipe 41 for connecting a compressed air supply source such as a compressor via an air hose (not shown) is provided at the lower portion of the back of the control box 17. The connection pipe 41 branches in three directions, and the first branch path 43a has an air hose 4
10 to the cylinder 47 (an actuation source for moving a lower joint, which will be described later, to the upper joint 27), to the injection air hole 31 of the upper joint 27 via the injection pressure adjusting valve 49. Second branch 43b
Is connected to the flushing air hole 35a of the upper joint 27 from the flushing adjustment valve 51 via the air hose 53, and is further connected to the third branch passage 43c from the stirring regulation valve 55 via the air hose 57. It is connected to the stirring air hole 33a of the joint 27.

Referring to FIG. 7 again, the bottom of the processing tank 9 is connected to the upper joint 27, and the discharge hole 23 of the processing tank 9 communicates with the discharge hole 29 a of the upper joint 27 in a sealed state. .

Further, a water jet nozzle 59 for washing away the abrasive 5 attached to the inner surface of the processing tank 9 is provided above the processing tank 9 in the processing tank 9. This water injection nozzle 5
As an example, the internal structure of 9 is similar to a sprinkler as shown in FIG. 12, and the water introduction part 61 and the nozzle part 63 for jetting water are eccentric, so that water is jetted while making one rotation. Therefore, since the jet water can wash the inner surface of the processing tank 9 evenly, the abrasive 5 can be reliably and efficiently recovered. In addition, the yield of the abrasive 5 can be improved, and the inner surface of the processing tank 9 can be easily cleaned at any time when it is difficult to see the inner surface of the processing tank 9 with the abrasive 5.

Referring again to FIGS. 4 and 5, a water tank 65 having a rectangular cross section in the embodiment of the present embodiment is accommodated in the lower part of the blast main body 3. 3 can be taken out.

More specifically, referring to FIGS. 1 to 3,
In the water tank 65, a cone 67 that forms the mixed fluid preparation unit 13 of the abrasive 5 and water and has a tapered lower side,
A water tank 69 for storing overflow water from 7 is provided.

An opening 71 on the upper surface of the water tank 65 is provided with a lower joint support 75 which is rotatable up and down via a hinge 73 provided at one side edge.
A lower joint 77 that can be connected to the above-described upper joint 27 is fixed to 5.

A discharge hole 29b is provided at the center of the lower joint 77. The discharge hole 29b is located at a position where the discharge hole 29b can communicate with the discharge hole 29a of the upper joint 27. It is arranged at a position communicating with. Further, a discharge duct 79 connected to the discharge hole 29b of the lower joint 77 protrudes downward so as to be immersed in the liquid mixture in the cone 67.

Around the discharge hole 29b of the lower joint 77, a stirring air hole 33b communicating with the upper and lower surfaces of the lower joint 77, a rinsing air hole 35b, a rinsing water hole 37b, and a mixed liquid outlet hole are provided. 39b are provided, and the respective holes are the agitating air hole 33a, the rinsing air hole 35a, and the rinsing water hole 37 of the upper joint 27 described above.
a and a position corresponding to the mixed liquid outlet hole 39a. An O-ring 81 is provided around each hole for pivotally connecting to the upper joint 27.

Referring to FIG. 1, on the lower surface of the lower joint 77, a stirring duct 83 for stirring the abrasive 5 and water in the water tank 65 by jetting air is connected to the stirring air hole 33b. The tip of the stirring duct 83 is located near the bottom of the water tank 65.

Further, a suction duct 85 for sucking a mixture of the abrasive 5 and water in the water tank 65 is provided with a lower joint 7.
7 is connected to the mixed liquid outlet hole 39b and protrudes downward so as to be immersed in the mixed liquid. A suction nozzle 87 is provided at the tip of the suction duct 85 so as to be located above the mixed solution.

Referring to FIG. 3, a sealed water storage chamber 89 is formed in the water tank 69, and a water introduction chamber 91 is formed below the bottom wall of the water storage chamber 89. Notch 9 through which water in water tank 65 flows into introduction chamber 91
3 is provided on the side wall of the water introduction chamber 91. A water inlet 95 communicating the water inlet chamber 91 and the water storage chamber 89 is provided substantially at the center of the bottom wall, and the water inlet 95 is openably and closably covered by the weight of the valve body 97. .

The upper wall of the water storage chamber 89 is provided with a flush air outlet 101 connected to the flush air hole 35b of the lower joint 77 via a hose 99. Rinse hole 37b
Water outlet 105 connected to hoses 103 via hoses 103
The washing water outlet 105 is connected to a washing water duct 107 through which water in the water storage chamber 89 flows out.

Referring to FIG. 11, the mixed fluid ejecting nozzle 7 is provided in the processing tank 9. However, in order to make it easy for the operator to grasp the mixed fluid ejecting nozzle 7, the nozzle body 109 is described above. It is preferable that the nozzle body 109 is fixed to the distal end of an elastic body 111 such as a spring that stands upright on the upper joint 27, and that the nozzle body 109 is located near the hand insertion portion 21.

In the nozzle body 109 of the mixed fluid jet nozzle 7, the mixed liquid outlet hole 3 of the upper joint 27 is provided.
9a through a mixed liquid supply pipe 113 to a mixed liquid introduction hole 115
A mixed liquid guiding chamber 117 is formed in which the mixed liquid is guided in communication with the liquid crystal guiding chamber 117. An injection nozzle 119 is provided at a front end of the mixed liquid guiding chamber 117. This injection nozzle 11
Reference numeral 9 denotes a conical inner surface 121 which is located in front of the mixed liquid guiding chamber 117 and is conically narrowed. A nozzle 123 penetrating the conical inner surface 121 is provided.

The tip of the air injection pipe 125 inserted from behind the mixed liquid guiding chamber 117 faces the inner surface 121 of the cone. The air injection pipe 125 is connected to the upper joint 2
It is connected to the injection air hole 31 of the 7 via the air supply pipe H _5, which is movable back and forth in the direction of the nozzle 123.

Referring to FIG. 8, FIG. 9 and FIG. 10, an end of an operation arm 131 is fixed to one end of a support shaft 129 supported on a side wall surface of the control box 17 via a bearing 127. A roller 135 is attached to the end of 131 so as to be in contact with the end 133 of the lower joint support 75 opposite to the hinge 73 from below. On the other hand, one end of a drive arm 137 is fixed to the other end of the support shaft 129, and the tip of the drive arm 137 is provided to engage with a piston rod 139 of a cylinder 47 fixed to the inner wall surface of the control box 17. Have been. The cylinder 47 is connected to an air supply source via an air hose 141.

Hereinafter, the operation will be described based on the above configuration.

Water is charged into the water tank 65 and the cone 67, and the abrasive 5 is further charged into the cone 67. This water tank 65
In the lower part of the blast body 3.

Next, when air is supplied to the cylinder 47 shown in FIGS. 9 and 10 to operate the cylinder 47, the drive arm 137 is operated clockwise in FIG.
8 rotates counterclockwise in FIG. 8 via the support shaft 129. The roller 135 at the tip of the operating arm 131
Pushes the end 133 of the lower joint support 75 upward, whereby the lower joint support 75 rotates clockwise in FIG. 4, and the upper surface of the lower joint 77 contacts the lower surface of the upper joint 27, Stir-air holes 33a, 33b of joint 27 and lower joint 77, flush-air holes 35a, 35b, flush-water hole 3
7a and 37b are connected to each other, and the mixed liquid outlet holes 39a and 39b are connected to each other.

From the air supply source, for example, 5 to 7 kg / cm ² of air is supplied from the stirring adjustment valve 55 to the stirring air hole 33 a of the upper joint 27 via the air hose H ₃ , The mixture is sprayed from the tip of the stirring duct 83 into the mixed liquid in the cone 67 through the hole 33b. The water of the mixed solution and the abrasive 5 are stirred by the air.

The air from the air supply source is supplied to the injection air hole 31 of the upper joint 27 through the injection pressure adjusting valve 49 via the air hose H ₂ , and the air supply pipe H ₅ is connected through the injection air hole 31. The air is injected toward the front nozzle 123 from the tip of the air injection pipe 125 in the mixed fluid injection nozzle 7 through the nozzle. Then, the mixed liquid induction chamber 1
17 has a negative pressure, so that the mixed liquid supply pipe 113 and the mixed liquid outlet holes 39 of the upper joint 27 and the lower joint 77.
The inside of the suction duct 85 becomes a negative pressure through a and 39b.

Accordingly, the well-stirred mixed liquid in the cone 67 is sucked from the suction nozzle 87 at the tip of the suction duct 85 and is sucked into the mixed-liquid guiding chamber 117 in the mixed-fluid ejecting nozzle 7. The liquid mixture in the guide chamber 117 is accelerated along the inner surface 121 of the cone together with the airflow from the tip of the air injection pipe 125, and is injected toward the workpiece W from the tip of the nozzle 123.

The surface of the work W is ground by the jetting force of the abrasive 5 in the mixed liquid, and the work W is blasted.
When the work W is a titanium alloy, the oxide film is removed and the work is mirror-finished. Since the heat generated when the abrasive 5 collides with the surface of the work W is constantly cooled by the water, the work W
Is not heated. Even if the work W is a difficult-to-cut material such as a titanium alloy, the work W can be easily ground by using the abrasive 5 such as diamond, and the work W can be easily embrittled or ignited by heat, such as a titanium alloy. It is also effective.

The mixed liquid injected from the mixed fluid injection nozzle 7 scatters around and the abrasive 5 adheres to the inner surface of the processing tank 9 so that the inside of the processing tank 9 becomes difficult to see. The water from the water injection nozzle 59 is sprayed and washed away.

More specifically, referring to FIG. 3, the water in the water tank 65 is filled with the cutout 9 in the lower part of the water tank 69.
From 3, the valve body 97 is pushed up through the water inlet 95 and flows into the water storage chamber 89. When the height of the water in the water tank 65 becomes equal to the height of the water in the water storage chamber 89 of the water tank 69, the valve body 97 sinks by its own weight and closes the water inlet 95.

The air from the air supply source is supplied from the flush adjustment valve 51 to the flush air hole 35a of the upper joint 27 via the air hose 53 (H ₄ ), and passes through the flush air hole 35b of the lower joint 77. Rinse air outlet 101 on the upper wall of water tank 69 via hose 99
From the water storage chamber 89. The water in the water storage chamber 89 is pushed down with an increase in the amount of air, so that the water in the water storage chamber 89 is moved from the washing water duct 107 to the washing water outlet 105 on the upper wall of the water tank 69. Via hose 1
03 is supplied to the washing water hole 37b of the lower joints 77 via the pushed up further through the hose H ₁ from the washing water hole 37a of the upper joint 27 to the water jet nozzle 59. Water is sprayed from the water spray nozzle 59 while rotating once like a sprinkler, and the inner surface of the processing tank 9 is washed away.

When the water in the water storage chamber 89 is completely pushed up and emptied, the air is injected from the water injection nozzle 59, and the pressure of the air in the water storage chamber 89 is reduced. A pressure sensor (not shown) for detecting the air pressure in the chamber 89 detects a decrease in the air pressure, and the supply of the air to the water storage chamber 89 is stopped by this detection signal.

The water from the mixed fluid injection nozzle 7 and the abrasive 5 and the water from the water injection nozzle 59 are supplied from the discharge hole 23 at the bottom of the processing tank 9 to the upper joint 27 and the lower joint 77.
Through the discharge ducts 79 from the discharge holes 23a and 23b.

In this process, the air discharged from the processing tank 9 passes through the mixed liquid, thereby removing the abrasive 5 and the scale, etc., in the water to clean the air. Further, water overflows from the cone 67 and flows out into the water tank 65.
Since the material is heavy and does not flow out of the cone 67, the abrasive 5 is reliably recovered and reused.

As described above, the water that has flowed into the water tank 65 again pushes up the valve body 97 from the lower notch 93 of the water tank 69 through the water inlet 95 to flow into the water storage chamber 89. Since the water in the water tank 69 is stored and reused as water for cleaning the inner surface of the processing tank 9 again, the wet blast device 1 itself becomes compact.

By stirring the inside of the cone 67 having a tapered lower portion, the abrasive 5 submerged at the bottom can be easily raised along the inner surface of the cone 67, so that the stirring efficiency can be improved.

Since the water and the abrasive 5 injected into the processing tank 9 flow out from the discharge hole at the bottom to the mixed fluid producing section 13, the abrasive 5 can be efficiently collected and reused.

Further, by positioning the mixed fluid jet nozzle 7 at a fixed position where it is easy to work, for example, in the vicinity of the hand insertion part, it is possible to easily grip the finger of the hand insertion part. Further, since the mixed fluid ejecting nozzle 7 is held by the elastic body, the mixed fluid ejecting nozzle 7 can be easily directed to the work W, and the work can be performed efficiently.

Since there are various kinds of abrasives 5 such as alumina oxide, diamond and glass beads, the water tank 65 is used.
Can be taken out from the blast main body, so that the abrasive 5 can be easily replaced, and blasting can be easily performed with the abrasive 5 corresponding to the type of the work W.

The air pipe and the water pipe of the water tank 65 are the processing tank 9
The water tank 65 can be easily removed from the blast main body.

Since the attachment / detachment of the joint is facilitated, the water tank 65 can be more easily taken out from the blast main body 3.

Since the hand insertion section 21 is an insertion section for fingers only, the size of the processing tank 9 can be reduced, so that the size of the entire apparatus can be reduced. In addition, the hand insertion section 21 in which the thumb and the other four fingers are put together can easily pull out the finger from the hand insertion section 21 after the operation is completed.

The present invention is not limited to the embodiment described above, but can be embodied in other forms by making appropriate changes.

[0088]

As can be understood from the above embodiment, according to the first aspect of the present invention, the water and the abrasive sprayed in the processing tank in the upper region are inevitably lower. Since the particles fall into the mixed fluid producing section in the region, the recoverability of the abrasive can be improved.

According to the second aspect of the present invention, a mixed fluid is formed in the mixed fluid forming section, and the mixed fluid can be jetted from the mixed fluid jetting nozzle to the work by the mixed fluid introducing section. The heat generated when the material collides with the work is cooled with water. Therefore, the work can be prevented from being heated to a high temperature, and is particularly effective for a small work, a material that is easily embrittled by heat, or a material that is easily ignited.

According to the third aspect of the present invention, by stirring the inside of the cone whose lower side becomes thinner, the abrasive material sinking at the bottom can be easily raised along the inner surface of the cone, so that the stirring efficiency is improved. Can be.

According to the fourth aspect of the present invention, the air discharged from the processing tank passes through the water, thereby removing abrasives, scales, and the like by the water, thereby making the air cleaner. Further, the abrasive can be reliably recovered and reused.

According to the fifth aspect of the present invention, since the abrasive attached to the inner surface of the processing tank is reliably washed away, expensive abrasive such as diamond can be reliably and efficiently recovered.
The yield of the abrasive can be improved. In addition, when the inner surface of the processing tank is cloudy with the abrasive material and is difficult to see, it can be easily cleaned at any time.

According to the sixth aspect of the present invention, since the water and abrasive sprayed into the processing tank flow out from the bottom discharge hole to the mixed fluid producing section, the abrasive can be efficiently recovered and reused.

According to the seventh aspect of the invention, the nozzle for ejecting the mixed fluid can be easily gripped by the finger of the hand insertion portion by positioning it at a fixed position where it is easy to work, for example, near the hand insertion portion. Further, since the mixed fluid ejecting nozzle is held by the elastic body, the mixed fluid ejecting nozzle can be easily directed to the work, and the work can be performed efficiently.

According to the invention of claim 8, since there are various types of abrasives such as alumina oxide, diamond and glass beads, the water tank can be taken out from the blast body, so that the abrasives can be easily replaced, and the work can be performed easily. Can be easily blasted with an abrasive material corresponding to the type.

According to the ninth aspect of the invention, the air pipe and the water pipe of the water tank can be easily attached to and detached from each pipe of the processing tank.
The water tank can be removed from the blast body. Therefore, there is an effect similar to that of the seventh aspect.

According to the tenth aspect of the present invention, since the joint can be easily attached and detached, the water tank can be more easily taken out from the blast main body.

According to the eleventh aspect of the present invention, since the hand insertion portion is an insertion portion for fingers only, the processing tank can be made small.
The size of the entire device can be reduced.

According to the twelfth aspect of the present invention, the effect is the same as that of the eleventh aspect, except that the hand insertion portion in the mode in which the thumb and the other four are combined allows the finger to be easily inserted from the hand insertion portion after the work is completed. Can be easily pulled out.

According to the thirteenth aspect of the present invention, the work in the processing tank is enlarged by the magnifying lens, so that the work can be more easily seen, and the yield of the abrasive can be improved.

According to the fourteenth aspect of the present invention, since the inside of the processing tank is under negative pressure, the finger can be easily pulled out without turning the finger of the hand insertion portion upside down. In addition, even if the hand insertion part is turned over, it is immediately restored.

According to the fifteenth aspect of the present invention, since the abrasive and the cooling liquid are both injected from the injection nozzle to the work, the heat generated when the abrasive collides with the work is cooled by the cooling liquid, so that the heating is performed. Not done. Therefore, the work can be prevented from being heated to a high temperature, and is particularly effective for a small work, a material that is easily embrittled by heat, or a material that is easily ignited.

According to the sixteenth aspect of the present invention, since the inside of the processing tank is under a negative pressure, the finger can be easily pulled out without turning the finger of the hand insertion portion upside down. In addition, even if the hand insertion part is turned over, it is immediately restored.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a longitudinal sectional view of a water tank and a cone portion in the water tank.

FIG. 2 shows an example of the embodiment of the present invention, and is a plan view of a water tank.

FIG. 3 shows an example of an embodiment of the present invention, and is a longitudinal sectional view of a water tank and a part of a water tank in the water tank.

FIG. 4 shows an example of the embodiment of the present invention, and is a cross-sectional view of a main part of a coupling portion between an upper joint and a lower joint in a blast main body.

FIG. 5 is a plan view showing an example of the embodiment of the present invention and viewed from an upper joint in a blast main body.

FIG. 6 shows an example of the embodiment of the present invention, and is a front view showing a cross section of a main part in a blast main body.

FIG. 7 is a right side view showing an example of the embodiment of the present invention and showing a cross section of a main part in a blast main body.

FIG. 8 is a left side view showing an example of the embodiment of the present invention and showing a cross section of a main part in a blast main body.

FIG. 9 shows an example of the embodiment of the present invention, and is a rear view showing the inside of a control box.

FIG. 10 is a sectional view of an essential part taken along line XX of FIG. 9;

FIG. 11 shows an example of the embodiment of the present invention, and is a cross-sectional view of a main part of a nozzle for jetting a mixed fluid.

FIG. 12 shows an example of the embodiment of the present invention, and is a cross-sectional view of a main part of a water injection nozzle.

FIG. 13 shows an example of an embodiment of the present invention, and is a front view illustrating the entire wet blast apparatus.

FIG. 14 is a right side view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wet blast apparatus 3 Blast main body 5 Abrasive 7 Mixed-nozzle injection nozzle 9 Processing tank 11 Storage section 13 Mixed-fluid preparation section 15 Mixed-fluid introduction section 21 Hand insertion section 23 Drain hole 27 Upper joint 59 Water injection nozzle 65 Water tank 67 cone Body 69 Water tank 73 Hinge 77 Lower joint 79 Discharge duct 83 Stirring duct 85 Suction duct 87 Suction nozzle 89 Water storage chamber 91 Water introduction chamber 93 Notch section 95 Water introduction port 97 Valve body 109 Nozzle body 111 Elastic body 123 nozzle

Claims (16)

[Claims] 1. A mixed fluid producing part of the abrasive and water,
And a processing tank for blasting the workpiece.
The wet blasting device, wherein the processing tank is arranged in a region above the mixed fluid creating section. 2. A hand insertion portion for inserting a hand of an operator, a processing tank for performing blasting by spraying an abrasive onto a work held by the hand of the operator inserted from the hand insertion portion, In a blasting apparatus comprising a storage section for the abrasive, a mixed fluid creating section for creating a mixed fluid of the abrasive and water, and a mixed fluid introduction for guiding the mixed fluid to a nozzle for ejecting a mixed fluid in a processing tank. And a wet blasting device. 3. The mixed fluid preparation unit according to claim 1, wherein the abrasive and water are mixed into a cone whose lower side becomes thinner, and the abrasive and water are agitated. The described wet blasting device. 4. The wet blasting apparatus according to claim 1, wherein the processing tank is connected to the outside via a pipe having one end immersed in water. 5. The wet blasting apparatus according to claim 1, further comprising a water jet nozzle for washing away the abrasive adhered to the inner surface of the processing tank in the processing tank. 6. The wet blasting apparatus according to claim 1, wherein a discharge hole at a bottom portion of the processing tank is connected to a mixed fluid producing section. 7. The wet blasting apparatus according to claim 1, wherein the nozzle for jetting the mixed fluid in the processing tank is held at a fixed position by an elastic body. 8. A mixed fluid producing section of the abrasive and water,
The wet blasting device according to claim 1, wherein a water tank provided with a water tank for storing overflow water from the mixed fluid creating section can be taken out from the blast main body. 9. The wet blasting apparatus according to claim 1, wherein an air pipe and a water pipe joint are provided at an upper portion of the water tank so as to be vertically movable, and can be connected to each pipe of the processing tank. 10. The wet blasting apparatus according to claim 9, wherein one of the upper and lower joints is swingable. 11. The wet blast apparatus according to claim 3, wherein the hand insertion portion has an insertion portion for a thumb and another finger without having an insertion region for a back of a hand. 12. The hand insertion part can be inserted in a manner in which a thumb and four other hands are put together.
The described wet blasting device. 13. A magnifying lens is provided on a portion of the openable and closable lid of the processing tank.
The described wet blasting device. 14. The wet blasting device according to claim 1, further comprising a suction device for making the inside of the processing tank a negative pressure. 15. In a processing method for polishing a work by injecting an abrasive to the work, when the abrasive is sprayed from the spray nozzle to the work, a cooling liquid is simultaneously sprayed from the same direction as the spray direction of the abrasive. A polishing method characterized by the above-mentioned. 16. The polishing method according to claim 15, wherein the inside of the processing tank is always kept at a negative pressure.