JPH08108155A - Method and apparatus for cleaning - Google Patents

Abstract

PURPOSE: To improve effect for cleaning a tap hole etc., by vibrating an article to be cleaned which is placed in cleaning liquid. CONSTITUTION: An article 14 to be cleaned is fixed on the upper surface 12 of a working table by a work holder 18 and placed in a cleaning tank in which cleaning liquid is stored together with a base frame 60. An air supply pipe 42 is connected with a high pressure source such as a compressor to supply compressed air to an air vibrator 22. In this way, an article 14 to be cleaned is vibrated by the air vibrator through the working table 10. Great vibrating acceleration is given to chips etc., sticking to the article 14 by the vibration so that the deposit is shaken off. The cleaning liquid is agitated by the vibration of the article 14 so that so called cavitation in which the cleaning liquid is stripped off on the surface of the article 14 takes place to generate bubbles. The entrance and exit of the cleaning liquid into and from a tap hole is made active, and then the cleaning effect is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for immersing an object to be cleaned in a cleaning liquid to remove dirt and the like adhering to the object to be cleaned.

[0002]

2. Description of the Related Art Conventionally, in the case of cleaning machined machine parts, a method of immersing a cleaning basket containing a machine part, which is an object to be cleaned, in a cleaning liquid in a cleaning tank has been generally used. Then, in order to further improve the cleaning efficiency and the cleaning effect, a cleaning device has been proposed in which a cleaning basket is rotated or swung in a cleaning tank (for example, Japanese Patent Publication No. 4-68032 and Japanese Patent Laid-Open No. 5-32032). -245449).

[0003]

However, in the conventional cleaning device, the cleaning basket accommodating the object to be cleaned is rotated or swung, but the object to be cleaned is provided with, for example, a hole or the like. And the cleaning liquid does not flow in and out of the hole smoothly,
It may not be possible to perform sufficient cleaning. In particular, when tapped holes are formed in the object to be cleaned, it is difficult to remove the cutting powder that has entered the spiral groove inside the tapped holes, and it is easy to remain after cleaning, so that a sufficient cleaning effect can be obtained. I can't.

The present invention has been made in order to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to enable good cleaning of tap holes and the like.

[0005]

In order to achieve the above object, the cleaning method according to the present invention transmits the vibration generated by the vibrator to the object to be cleaned arranged in the cleaning liquid, and the object to be cleaned itself. It is configured to vibrate and wash. When vibrating the object to be cleaned, it is desirable to cause cavitation on the surface of the object to be cleaned.

Further, a cleaning apparatus according to the present invention for achieving the above object is a cleaning apparatus having a cleaning tank in which a cleaning liquid for immersing an object to be cleaned is stored, the cleaning apparatus being disposed in the cleaning tank. It is configured to have a work table for fixing the object to be cleaned and a vibrator attached to the work table for vibrating the object to be cleaned by applying an impact force to the work table.

It is desirable to provide a cushioning material on the lower surface of the work table for absorbing the vibration of the work table due to the vibration generated by the vibrator. As the cushioning material, rubber, an air damper, a hydraulic damper, or the like can be used, but rubber is preferably used because the structure can be simplified and the cost can be reduced.
Further, as the vibrator, an air vibrator or an electromagnetic vibrator that is operated by compressed air, and further, a piezoelectric element, an ultrasonic vibrator, etc. are attached to the work table, and the piezoelectric element or the ultrasonic vibrator is vibrated to vibrate the object to be cleaned. May be transmitted.

[0008]

According to the present invention configured as described above, the object to be cleaned vibrates violently due to the vibration generated by the vibrator, and a large vibration acceleration is applied to the dirt and cuttings adhering to the object to be cleaned and shaken off. As a result, the adhered substances are easily separated from the object to be cleaned, and the chips and the like in the tap holes are also easily separated from the object to be cleaned. In particular, when cavitation is generated on the surface by vibrating the object to be cleaned, when the cleaning liquid peels from the object to be cleaned and bubbles are generated, the adhered substances such as cutting chips are also peeled together with the bubbles, so the cleaning effect Promote more. Therefore, it is possible to favorably clean the inside of the tap hole, which has been difficult to clean conventionally.

If the vibrator is attached to the work table for fixing the object to be cleaned, the vibrator can be easily attached to the object to be cleaned. Further, by disposing the cushioning material under the work table, it is possible to prevent the vibration of the work table from being transmitted to the cleaning tank or the like, and prevent fatigue damage due to the vibration of the cleaning tank or the like. Then, if the vibrator is arranged so as to be inclined with respect to the fixed surface of the object to be cleaned, a vibration component in the direction along the fixed surface and a vibration component in the direction orthogonal to the fixed surface act on the object to be cleaned, It is possible to surely clean the tapped holes and the like formed in the cleaning object regardless of the orientation thereof.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the cleaning apparatus according to the present invention,
A detailed description will be given with reference to the accompanying drawings. 2 and 3 are a perspective view and a sectional view showing the basic structure of the cleaning apparatus according to the embodiment of the present invention.

In FIG. 2, a work table 10 arranged in a cleaning tank (not shown) has an upper surface 12 to which an object to be cleaned 14 can be fixed. That is, the upper surface 12 of the work table 10 is provided with a plurality of screw holes 16 at appropriate places, and the ear portion 1 provided on the object to be cleaned 14 is provided in the screw holes 16.
Bolt 20 that penetrates work holder 18 that holds 7
Is fastened to the workpiece table 10 by tightening a nut screwed on the bolt 20.

Inside the work table 10, an air vibrator 22 as a vibrator is attached. As shown in FIG. 3, in the air vibrator 22, a plunger 26 is housed in a plunger chamber 24 formed in the work table 10 so as to be movable in the axial direction. The plunger chamber 24 is formed so as to be inclined with respect to the upper surface 12 for fixing the object to be cleaned 14 of the work table 10, and the vibration direction due to the impact force of the plunger 26 applied to the work table 10 will be described later. Top 12
And a vertical component orthogonal to the upper surface 12 are provided. Further, a plug 30 for colliding the tip striking portion 28 of the plunger 26 and giving an impact force to the work table 10 is screwed into the tip end side opening of the plunger chamber 24.

In the plunger 26, the tip striking portion 28 and the rear end striking portion 32 are smaller than the diameter of the main body portion therebetween, and as shown in FIG. When contacting the rear end surface of the work table 10, the tip side exhaust flow path 34 formed in the work table 10 communicates with the plunger chamber 24, and when the tip striking portion 28 contacts the plug 30,
The rear end side exhaust passage 36 provided in the work table 10 and the plunger chamber 24 communicate with each other. The exhaust passages 34 and 36 are provided in a flexible exhaust pipe 40 attached to the upper surface 12 of the work table 10 in order to discharge the compressed air that has driven the plunger 26 out of the cleaning tank.
And 8. Further, a flexible air supply pipe 42 for supplying compressed air for driving the plunger 26 is attached to the upper surface 12.

The air supply pipe 42 communicates with a flow path 44 formed in the work table 10, and a rear end side air supply flow path 46 in which the tip of the flow path 44 is open at the center of the rear end surface of the plunger chamber 24.
And a distal end side air supply passage 48 that is open at the center of the plunger chamber 24 in the axial direction.
Compressed air from a high-pressure source such as a compressor shown in the drawing is supplied to the plunger chamber 24 via 6, 48. Then, the rear end striking portion 32 is provided in the plunger chamber 24 in the plunger 26.
The peripheral groove 50 is formed at a position that matches the opening of the front end side air supply channel 48 when it comes into contact with the rear end surface of
A peripheral groove 52 is formed on the rear side of the peripheral groove 50 at a position separated by the stroke length of the plunger 26. Also,
The plunger 26 is provided with a passage 54 that opens to the end face of the rear end striking portion 32, one end of this passage 54 communicates with the circumferential groove 50, and compressed air from the tip side air supply passage 48 is supplied. The plunger 26 is ejected from the end face of the rear end striking portion 32.
It is designed to give the force to move to the tip side. Further, the plunger 26 is formed with a passage 56 having one end opening to the end face of the tip striking portion 28 and the other end opening to the circumferential groove 52, so that compressed air from the tip side air supply passage 48 is discharged. The force is ejected from the end surface of the tip striking portion 28 via the circumferential groove 52 and the passage 56, and a force for moving the plunger 26 rearward is applied.

On the other hand, a rear end striking portion 32 is provided between the periphery of the tip striking portion 28 and the plug 30 when not operating, to the plunger chamber 24.
A coil spring 58 for pressing the rear end wall surface is provided.
The work table 10 is a shallow box-shaped base frame 6
It is fixed on a cushioning material 62 made of rubber or the like provided in the inside of 0 to prevent the vibration of the work table 10 from being transmitted to the base frame 60 and the cleaning tank. It should be noted that reference numerals 64 and 65 shown in FIG. 3 are tapped holes formed in the article to be cleaned 14, and reference numeral 66 is a hole.

FIG. 1 shows a concrete embodiment of the present invention. In FIG. 1, the work table 10 has a pair of frame plates 70, 70 arranged in parallel at appropriate intervals. The upper end of the frame plate 70 is inclined so that the front end side (the left side in FIG. 1A) is lowered, and a base plate 72 is fixed to the inclined upper end. A pair of work fixing members 74 are provided on the upper surface of the base plate 72, and the workpiece 14 can be fixed to the work fixing members 74. Therefore, the article to be cleaned 14 is attached to the work table 10 in an inclined manner, and when the tap holes 64 and the holes 66 formed in the article to be cleaned 14 are inclined and vibrated by the air vibrator 22, The cutting chips can be easily discharged from the tap hole 64, the hole 66 and the like.

On the other hand, the lower end of the frame plate 70 is fixed to a mounting base 78 arranged so as to be embedded in the base plate 76. Further, a support plate 80 provided upright on the mounting base 78 is arranged on the back side of the frame plate 70, and the back surface of the frame plate 70 is fixed to the front surface of the support plate 80 by bolts or the like. Further, the air vibrator 22 is attached to the back side of the support plate 80.
This air vibrator 22 has the plunger 26 described above.
Are arranged so as to move horizontally, and the support plate 8
The vibration applied to the object to be cleaned 14 via the work table 10 is composed of a component in the direction along the upper surface of the object to be cleaned 14 and a component in the direction orthogonal to the upper surface of the object to be cleaned 14. The air vibrator 22 is covered with a cover 82 attached to the support plate 80. Cover 82
Is provided with a sound absorbing material 84 on its inner surface so as to absorb noise generated from the air vibrator 22. Also,
The rear end side of the cover 14 penetrates a hole provided in a support 86 provided upright on the base plate 76, and is supported by the support 86.
Vibration is prevented. Note that rubber or the like for vibration isolation may be arranged on the lower surface of the base plate 76.

The operation of the embodiment constructed as described above is as follows. First, the workpiece 14 is pressed against the article 14 to be cleaned.
It is fixed to the upper surface 12 of the work table 10 by means of 8 and is placed together with the base frame 60 in the cleaning tank in which the cleaning liquid is stored.
Then, when the air supply pipe 42 is connected to a high pressure source such as a compressor (in the case of the embodiment, the pressure is about 5 kg / cm ² ), compressed air is supplied to the air vibrator 22 and the air vibrator 22 is cleaned via the work table 10. The object 14 is vibrated.

That is, before the compressed air is supplied to the air vibrator 22, the state shown in FIG.
The front circumferential groove 50 communicates with the front air supply passage 48, and the rear circumferential groove 52 is blocked from the front air supply passage 48. Then, the compressed air 70 supplied to the air supply pipe 42 passes through the flow path 44.
Through the rear end side air supply passage 46 and the front end side air supply passage 48. Compressed air 70 that has entered the rear air supply passage 46
Flows into the rear end striking portion 32 side of the plunger chamber 24 and pushes the plunger 26 leftward in FIG. 4, which is the front end side. Further, the compressed air 70 that has flowed into the tip side air supply passage 48 enters the passage 54 from the circumferential groove 50 and is ejected from the end surface of the trailing end striking portion 32 into the plunger chamber 24. Therefore, the rear end striking portion 32 side of the plunger chamber 24 becomes high pressure by the compressed air 70, the plunger 26 moves in the left direction in the figure against the biasing force of the coil spring 58, and the end surface of the tip striking portion 28 has the plug 3.
It violently collides with 0 and becomes the state of FIG. At this time, the work table 10 is attached to the plug 3 by the collision of the plunger 26.
It vibrates due to the impact force received by 0, and vibrates the object to be cleaned 14 fixed to the upper surface 12. As shown in FIG. 3 or FIG. 1, since the plunger 26 is inclined with respect to the upper surface of the work table 10, the vibration direction of the object to be cleaned 14 is a component along the upper surface of the object to be cleaned 14. It has a component orthogonal to the upper surface.

When the plunger 26 is in the state of FIG. 4 (2), the front end side exhaust passage 34 and the plunger chamber 24 are blocked by the plunger 26, and the rear end side exhaust passage 3 is formed.
6 communicates with the plunger chamber 24, and the compressed air 70 flowing into the plunger chamber 24 from the rear end side air supply passage 46 flows to the rear end side exhaust passage 36 side. The front circumferential groove 50 is blocked from the front air supply passage 48 by the plunger 26, the ejection of the compressed air 70 from the end surface of the rear striking portion 32 is stopped, and the rear circumferential groove 52 is located at the front side. It communicates with the air supply passage 48. Therefore, the compressed air 7 from the tip side air supply passage 48 is
0 flows into the passage 56 through the circumferential groove 52, is jetted into the plunger chamber 24 from the end face of the tip striking portion 28, the tip striking portion 28 side of the plunger chamber 24 becomes high pressure, and the rear side of the plunger 26 ( The moving force acts on the right side of the figure. Therefore, the plunger 26 moves rearward due to the pressure of the compressed air 70 and the repulsive force of the coil spring 58, so that the end face of the rear end striking portion 32 becomes the rear end face of the plunger chamber 24 as shown in FIG. The work table 10 collides with the work table 10 and an impact force is applied to the work table 10 to vibrate the work table 10.

When the plunger 26 moves to the rear end side of the plunger chamber 24, the exhaust passage 34 on the front end side is moved to the plunger chamber 2
4, the compressed air 70 in the plunger chamber 24 is discharged, and the rear end side exhaust flow path 36 is shut off from the plunger chamber 24 by the plunger 26. Then, the front circumferential groove 50 communicates with the front air supply passage 48, and the rear circumferential groove 52 is blocked from the front air supply passage 48 by the plunger 26, and the initial state is restored. Below, the above-mentioned operation is compressed air 7
It is repeated until the supply of 0 is stopped.

The object to be cleaned 14 fixed to the work table 10 is
The impact force due to the collision of the plunger 26 received by the work table 10 is transmitted and vibrates violently, giving a large vibration acceleration to the chips and the like adhering to the object to be cleaned 14 to shake off the adhering object. Further, the object to be cleaned 14 vibrates violently, so that the effect of agitating the cleaning liquid is exerted, and so-called cavitation occurs in which the cleaning liquid is separated on the surface of the object to be cleaned 14 to generate bubbles. For this reason, the cleaning liquid enters and leaves the tap holes 64, 65 and the holes 66 actively, the dissolution of dirt such as oil is promoted, and when the cleaning liquid is separated from the object to be cleaned 14 and bubbles are generated. It is possible to easily remove the adhered matter such as cutting chips and the like together with the air bubbles from the article to be cleaned 14, and
The cleaning of Nos. 4 and 65 and the like can be favorably performed. In particular, by arranging the object to be cleaned 14 in an inclined manner as shown in FIG. 1, the tapped holes 64, 65, etc. are inclined and chips and the like are easily discharged from the holes.

In this embodiment, since the plunger 26 is inclined with respect to the upper surface 12 for fixing the object to be cleaned 14, the object to be cleaned 14 has a horizontal vibration component along the upper surface 12, When the tap hole is formed in the vertical direction as indicated by the reference numeral 64 even if the tap hole is formed in the horizontal direction as indicated by the reference numeral 65, the vibration component in the vertical direction orthogonal to the upper surface 12 is received. Even in such a case, the adhered substances such as cutting chips can be surely removed, and a large cleaning effect can be obtained. Further, in the embodiment, by disposing the cushioning material 62 at the lower part of the work table 10, it is possible to prevent the vibration of the work table 10 from being transmitted to the base frame 60 and the cleaning tank, and the fatigue damage due to these vibrations can be prevented. Can be prevented.

The strength of the impact force (collision speed) by the plunger 26 and the vibration frequency (the number of collisions of the plunger 26) can be adjusted by changing the pressure and supply amount of the compressed air 70. Further, in the above-described embodiment, the case where the air vibrator 22 is used as the vibrator has been described, but an electromagnetic vibrator, a vibrator using a piezoelectric element, an ultrasonic vibrator, or the like may be attached to the work table 10. Further, in the above embodiment, the cushioning material 62
Although the case where the rubber is rubber has been described, an air damper or a hydraulic damper may be used as the cushioning material 62. Further, the base frame 60 may be simply placed in the cleaning tank or may be fixed to the cleaning tank. Further, in the above embodiment, the case where the air vibrator 22 is attached to the work table 10 has been described, but the air vibrator 22 may be directly attached to the article to be cleaned 14.

[0025]

As described above, according to the present invention, the object to be cleaned itself vibrates violently due to the vibration generated by the vibrator, and a large vibration acceleration is exerted on the dirt and chips adhering to the object to be cleaned. As a result, the adhered substances are easily removed from the object to be cleaned, and the chips and the like in the tap holes are easily separated from the object to be cleaned. In particular, when cavitation is generated on the surface by vibrating the object to be cleaned, when the cleaning liquid peels from the object to be cleaned and bubbles are generated, the adherents such as facets are also peeled together with the bubbles, so the cleaning effect is improved. Promote more. Therefore, it is possible to favorably clean the inside of the tap hole, which has been difficult to clean conventionally.

Further, according to the present invention, since the vibrator is attached to the work table for fixing the object to be cleaned, the vibrator can be easily attached to the object to be cleaned. Further, according to the present invention, by arranging the cushioning material in the lower portion of the work table, it is possible to prevent the vibration of the work table from being transmitted to the cleaning tank and the like, and prevent the fatigue damage due to the vibration of the cleaning tank and the like. Then, the present invention, since the vibrator is arranged to be inclined with respect to the fixed surface of the object to be cleaned,
The vibration component in the direction along the fixed surface and the vibration component in the direction orthogonal to the fixed surface act on the object to be cleaned, and the tap hole or the like formed on the object to be cleaned can be reliably cleaned regardless of its orientation. .

[Brief description of drawings]

FIG. 1 is a side view and a front view of an example of a cleaning device according to an example.

FIG. 2 is a perspective view of the basic structure of the cleaning device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of the basic structure of the cleaning device according to the embodiment.

FIG. 4 is an explanatory diagram of an operation of the air vibrator according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Work table 14 Washed object 22 Vibrator (air vibrator) 24 Plunger chamber 26 Plunger 62 Buffer material 40 Exhaust pipe 42 Air supply pipe

Claims (5)

[Claims] 1. A cleaning method comprising: transmitting vibration generated by a vibrator to an object to be cleaned placed in a cleaning liquid to vibrate the object to be cleaned for cleaning. 2. The cleaning is performed by transmitting the vibration generated by a vibrator to the object to be cleaned placed in the cleaning liquid to vibrate the object to be cleaned to generate cavitation on the surface of the object to be cleaned. How to wash. 3. A cleaning device provided with a cleaning tank in which a cleaning liquid for immersing an object to be cleaned is provided, and a work table disposed in the cleaning tank, for fixing the object to be cleaned, and attached to the work table. And a vibrator that vibrates the object to be cleaned via a work table. 4. The cleaning apparatus according to claim 1, wherein a cushioning material that absorbs vibration of the work table is provided on a lower surface of the work table. 5. The vibrating device is provided so as to be inclined with respect to a surface of the work table on which the object to be cleaned is fixed, and a vibration direction intersects with the fixing surface. The cleaning device according to.