JP3641383B2 - Ultrasonic cleaning equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ultrasonic cleaning apparatus that cleans various objects to be cleaned using ultrasonic energy.
[0002]
[Prior art]
FIG. 7 is a diagram showing an ultrasonic cleaning apparatus 1a which is a conventional technique. The ultrasonic cleaning apparatus 1a is configured by fixing an ultrasonic vibrator 5 in or outside the cleaning tank 2 in which the cleaning liquid 3 is accommodated. The object 4 to be cleaned is immersed in the cleaning liquid 3, and the ultrasonic wave 6 is irradiated from the ultrasonic vibrator 5, and the dirt adhering to the object 4 to be cleaned is removed by ultrasonic energy.
[0003]
FIG. 8 is a diagram showing a specific configuration of the ultrasonic cleaning apparatus 1a. The article 4 to be cleaned is held in the basket 7. The basket 7 is suspended from the upper part of the cleaning tank 2, and the basket 7 and the cleaning tank 2 are configured to be relatively close to each other or separated from each other. The article to be cleaned 4 held in the basket 7 is immersed in the cleaning liquid 3 together with the basket 7. Inside the cleaning tank 2, a grinder 8 assembled with a stainless steel bar or the like is arranged, and an object to be cleaned which is held in the basket 7 and immersed in the ultrasonic vibrator 5 fixed in the cleaning tank 2. 4 contact is prevented.
[0004]
The ultrasonic wave 6 irradiated from the ultrasonic vibrator 5 has a strong straightness. Therefore, the ultrasonic wave 6 is likely to hit the part of the article 4 to be cleaned facing the ultrasonic vibrator 5, but the ultrasonic wave 6 is difficult to hit the other part. Therefore, uneven cleaning occurs. Further, as shown in FIG. 9, the irradiated ultrasonic wave 6 has a node 9 a and an abdomen 9 b having a wavelength 9 depending on the oscillation frequency, so that the ultrasonic intensity varies depending on the position inside the cleaning tank 2. Therefore, uneven cleaning occurs.
[0005]
10 and 11 are diagrams showing other ultrasonic cleaning apparatuses 1b and 1c, respectively, which are conventional techniques. The ultrasonic cleaning device 1b swings the object 4 to be cleaned as indicated by the arrow 10, and the ultrasonic cleaning device 1c moves the object 4 to be moved up and down as indicated by the arrow 11, respectively. This is intended to reduce cleaning unevenness due to such a cause. The swing or lift of the article to be cleaned 4 is achieved by swinging or lifting of the basket 7.
[0006]
[Problems to be solved by the invention]
However, when washing heavy objects such as molds, it is not easy to swing or lift the suspended basket 7 while holding a heavy mold, and therefore the basket 7 is fixed in the washing tank. Is done. For this reason, as described above, the object to be cleaned 4 has a portion that is easily hit by ultrasonic waves and a portion that is hard to hit, resulting in uneven cleaning. In addition, cleaning unevenness occurs due to different ultrasonic intensities at positions in the cleaning tank.
[0007]
The objective of this invention is providing the ultrasonic cleaning apparatus which can wash | clean a comparatively heavy to-be-cleaned object uniformly.
[0008]
[Means for Solving the Problems]
The present invention includes a cleaning tank in which a cleaning liquid and an object to be cleaned are accommodated, an ultrasonic vibrator that irradiates ultrasonic waves toward the inside of the cleaning tank, and the ultrasonic vibrator within a predetermined angle range. An ultrasonic cleaning apparatus comprising: a swinging means for swinging the ultrasonic vibrator by rotating alternately and reversely .
[0009]
According to the present invention, the cleaning liquid and the object to be cleaned are accommodated in the cleaning tank, and the ultrasonic vibrator is irradiated toward the inside of the cleaning tank by operating the vibrator while swinging the ultrasonic vibrator. The Since the ultrasonic vibrator swings, the distance between the ultrasonic vibrator and the object to be cleaned changes. Therefore, it is possible to prevent the nodes and the stomach of the irradiated ultrasonic wave from hitting the same place on the object to be cleaned. In addition, a part of the irradiated ultrasonic wave hits the wall and water surface of the cleaning tank and is reflected, wraps around the surface opposite to the surface facing the ultrasonic vibrator of the object to be cleaned, and reaches the entire object to be cleaned. Ultrasound is irradiated. Therefore, uneven cleaning can be greatly reduced.
[0010]
The present invention, the swinging means is characterized by oscillating the ultrasonic transducers in the longitudinal and / or lateral.
[0011]
According to the present invention, uniform cleaning can be reliably performed by swinging the ultrasonic transducer back and forth or right and left. Further, by swinging back and forth and from side to side, cleaning without unevenness can be more reliably performed.
[0012]
According to the present invention, the swinging means includes a swinging shaft attached to the bottom surface of the ultrasonic transducer, and a swinging shaft rotation driving unit that rotates the swinging shaft alternately forward and backward within a predetermined angle range. And an ultrasonic cleaning device characterized by comprising:
[0013]
Further, in the present invention, the rocking shaft rotation driving means includes:
A drive shaft to which the rotational motion from the drive source is transmitted;
The ultrasonic cleaning apparatus includes a crank portion that converts a rotational motion of the drive shaft into a linear motion and transmits the linear motion to the swing shaft.
[0014]
In the present invention, the swinging means is
A support member provided on the bottom side of the ultrasonic transducer;
An ultrasonic cleaning apparatus comprising: one or a plurality of swing shafts attached to the ultrasonic vibrator, wherein the ultrasonic vibrator is swung by vertically moving the swing shaft. is there.
[0015]
In the present invention, the swinging means is
A central axis provided at the center of the bottom surface of the ultrasonic transducer;
One or a plurality of oscillating shafts provided at any one end or a plurality of ends of the ultrasonic transducer, and oscillating the ultrasonic transducer by moving the oscillating shaft up and down. Is an ultrasonic cleaning device characterized by
[0018]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing an ultrasonic cleaning device 21 according to an embodiment of the present invention. The ultrasonic cleaning device 21 is configured by fixing an ultrasonic vibrator 25 inside or outside a cleaning tank 22 in which a cleaning liquid 23 is accommodated. The object to be cleaned 24 is immersed in the cleaning liquid 23, and ultrasonic waves 26a and 26b are irradiated from the ultrasonic vibrator 25 to remove dirt adhered to the object 24 to be cleaned by ultrasonic energy.
[0019]
In particular, the ultrasonic cleaning device 21 includes a swinging means for the ultrasonic transducer 25. That is, a swing shaft 27 is attached to the central portion of the ultrasonic transducer 25, and the ultrasonic transducer 25 swings back and forth or left and right by rotating the shaft 27 by a predetermined angle, for example, alternately. .
[0020]
FIG. 2 is a diagram showing a specific configuration of the ultrasonic cleaning device 21. The object to be cleaned 24 is held in the basket 28. The basket 28 is suspended from the upper part of the cleaning tank 22, and the basket 28 and the cleaning tank 22 are configured to be relatively close to or away from each other. The object to be cleaned 24 held in the basket 28 is immersed in the cleaning liquid 23 together with the basket 28. Inside the cleaning tank 22, a slat stand 29 assembled with a stainless steel bar or the like is arranged, and an object to be cleaned held and immersed in the basket 28 to the ultrasonic vibrator 25 fixed in the cleaning tank 22. 24 contacts are prevented.
[0021]
FIG. 3 is a diagram showing a specific configuration of the swinging means of the ultrasonic transducer 25. The swing shaft 27 is connected to a drive shaft 30 to which a rotational motion of the motor is transmitted by a crank portion 31. The crank portion 31 converts the rotational motion of the drive shaft 30 into linear motion and transmits the linear motion to the swing shaft 27.
[0022]
By the oscillation of the ultrasonic transducer 25, the distance between the ultrasonic transducer 25 and the object to be cleaned 24 is changed, and it is possible to prevent the node or the belly of the ultrasonic wave 26a from hitting the same place of the object to be cleaned 24. . Further, a part of the irradiated ultrasonic wave 26 b hits the wall surface and the water surface of the cleaning tank 22 and is reflected, wraps around the surface of the object to be cleaned 24 opposite to the surface facing the ultrasonic transducer 25, The ultrasonic waves 26 a and 26 b are irradiated on the entire cleaning object 24. Therefore, uneven cleaning can be greatly reduced.
[0023]
FIG. 4 is a diagram showing an ultrasonic cleaning device 35 according to another embodiment of the present invention. The ultrasonic cleaning device 35 is configured in substantially the same manner as the ultrasonic cleaning device 21 and includes a swinging means for the ultrasonic transducer 25. In the device 35, the ultrasonic transducer 25 is limited in the front-rear or left-right direction. It is characterized by swinging without being performed.
[0024]
That is, a receiving central shaft 36 is provided at the center of the bottom surface of the ultrasonic transducer 25. The central shaft 36 and the ultrasonic transducer 25 are configured to be slidable. A swing shaft 37 is attached to the end of the ultrasonic transducer 25. By moving the swing shaft 37 up and down, the ultrasonic transducer 25 swings.
[0025]
The ultrasonic wave irradiated from the oscillating ultrasonic transducer 25 is not limited to the front-rear or left-right direction, and diffuses in all directions of the cleaning tank 22. Therefore, cleaning unevenness can be reduced more effectively. The swing shaft 37 is attached to an end of the ultrasonic transducer 25, for example, one arbitrary end, two opposite ends, four ends of each corner, and any other plural ends. It doesn't matter.
[0026]
FIG. 5 is a diagram showing an ultrasonic cleaning apparatus 41 which is a reference technique of the present invention for the purpose of reducing uneven cleaning of an object to be cleaned . Similar to the ultrasonic cleaning devices 21 and 35, the ultrasonic cleaning device 41 is configured by fixing the ultrasonic vibrator 25 in or outside the cleaning tank 22 in which the cleaning liquid 23 is accommodated. The object to be cleaned 24 is immersed in the cleaning liquid 23, the ultrasonic wave 26 is irradiated from the ultrasonic vibrator 25, and the dirt adhered to the object 24 to be cleaned is removed by ultrasonic energy.
[0027]
In particular, the ultrasonic cleaning device 41 is provided with a lifting / lowering means for the ultrasonic transducer 25. That is, the vertical drive shaft 42 is attached to the bottom surface of the ultrasonic transducer 25, and the ultrasonic transducer 25 is moved up and down by moving the shaft 42 up and down by a predetermined amount.
[0028]
FIG. 6 is a diagram showing a specific configuration of the raising / lowering means of the ultrasonic transducer 25. The vertical drive shaft 42 is connected by a cam 46 to a drive shaft 45 to which the rotational motion of the motor is transmitted. The cam 46 converts the rotational motion of the drive shaft 45 into a linear motion and transmits it to the vertical drive shaft 42.
[0029]
By raising and lowering the ultrasonic transducer 25, the distance between the ultrasonic transducer 25 and the object to be cleaned 24 can be changed, and the nodes and belly of the ultrasonic wave 26 can be prevented from hitting the same place of the object to be cleaned 24. Therefore, uneven cleaning can be reduced.
[0030]
The effect of the present invention is particularly remarkable when cleaning a large and heavy object 24 to be cleaned. In cleaning a large and heavy object to be cleaned 24 such as a mold, the mold is as heavy as several tens of kilograms to several tons, and it is difficult to directly put it in the cleaning tank. In addition, it is not easy to swing or lift the mold. In the present invention, since the ultrasonic vibrator 25 is swung or moved up and down instead of the object to be cleaned 24, the object to be cleaned 24 can be cleaned evenly. Further, when the ultrasonic vibrator 25 is swung, since the ultrasonic wave is reflected and diffused by the side surface of the cleaning tank 22 or the water surface, the cleaning unevenness is compared with the case where the cleaning object 24 is swung together with the basket. Can be reduced.
[0031]
【The invention's effect】
As described above, according to the present invention, the object to be cleaned is cleaned with ultrasonic waves by oscillating the ultrasonic vibrator. Therefore, the distance between the ultrasonic vibrator and the object to be cleaned is changed and irradiated. Furthermore, it is possible to prevent the nodes and belly of the ultrasonic wave from hitting the same place on the object to be cleaned. In addition, a part of the irradiated ultrasonic wave hits the wall and water surface of the cleaning tank and is reflected, wraps around the surface opposite to the surface facing the ultrasonic vibrator of the object to be cleaned, and reaches the entire object to be cleaned. Ultrasound is irradiated. Therefore, uneven cleaning can be greatly reduced.
[0032]
In addition, according to the present invention, since the ultrasonic transducer is swung back and forth or left and right, uniform cleaning can be reliably performed. In addition, since it is swung back and forth and left and right, cleaning without unevenness can be more reliably performed.
[Brief description of the drawings]
FIG. 1 is a diagram showing an ultrasonic cleaning apparatus 21 according to an embodiment of the present invention.
FIG. 2 is a diagram showing a specific configuration of the ultrasonic cleaning device 21. FIG.
FIG. 3 is a diagram showing a specific configuration of the swinging means of the ultrasonic transducer 25. FIG.
FIG. 4 is a diagram showing an ultrasonic cleaning device 35 according to another embodiment of the present invention.
FIG. 5 is a diagram showing an ultrasonic cleaning device 41 as a reference technique of the present invention.
6 is a diagram showing a specific configuration of lifting means of the ultrasonic transducer 25. FIG.
FIG. 7 is a diagram showing an ultrasonic cleaning apparatus 1a which is a conventional technique.
FIG. 8 is a diagram showing a specific configuration of the ultrasonic cleaning apparatus 1a.
9 is a diagram showing a node 9a and an antinode 9b having a wavelength 9 depending on the oscillation frequency of the ultrasonic wave 6 to be irradiated. FIG.
FIG. 10 is a diagram showing another ultrasonic cleaning apparatus 1b which is a conventional technique.
FIG. 11 is a diagram showing another ultrasonic cleaning apparatus 1c which is a conventional technique.
[Explanation of symbols]
21, 35, 41 Ultrasonic cleaning device 22 Cleaning tank 23 Cleaning liquid 24 Object 25 Ultrasonic transducers 26a, 26b Ultrasonic transducers 27, 37 Oscillating shafts 30, 45 Drive shaft 31 Crank portion 36 Center shaft 42 Vertical drive shaft 46 cam

Claims (6)

A cleaning tank for storing the cleaning liquid and the object to be cleaned;
An ultrasonic transducer for irradiating ultrasonic waves toward the inside of the cleaning tank;
An ultrasonic cleaning apparatus comprising: a swinging means for swinging the ultrasonic vibrator by rotating the ultrasonic vibrator alternately forward and reverse within a predetermined angle range . It said rocking means, the ultrasonic cleaning apparatus according to claim 1, wherein the oscillating the ultrasonic transducer back and forth and / or left and right. The oscillating means includes an oscillating shaft attached to the bottom surface side of the ultrasonic transducer, and oscillating shaft rotation driving means for rotating the oscillating shaft alternately forward and backward within a predetermined angle range. The ultrasonic cleaning apparatus according to claim 1, wherein: The rocking shaft rotation driving means includes:
A drive shaft to which the rotational motion from the drive source is transmitted;
The ultrasonic cleaning apparatus according to claim 3 , further comprising a crank portion that converts a rotational motion of the drive shaft into a linear motion and transmits the linear motion to the swing shaft. The swinging means is
A support member provided on the bottom side of the ultrasonic transducer;
3. The ultrasonic transducer according to claim 1, further comprising: one or a plurality of oscillating shafts attached to the ultrasonic transducer, wherein the ultrasonic transducer is oscillated by vertically moving the oscillating shaft. The ultrasonic cleaning apparatus as described. The swinging means is
A central axis provided at the center of the bottom surface of the ultrasonic transducer;
One or a plurality of oscillating shafts provided at any one end or a plurality of ends of the ultrasonic transducer, and oscillating the ultrasonic transducer by moving the oscillating shaft up and down. The ultrasonic cleaning apparatus according to claim 1 or 2.

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