JP3025720U - Ultrasonic peeling tool - Google Patents

Abstract

(57) [Abstract] [Problem] Problem that occurs when the width of the blade portion of the ultrasonic peeling tool that is fastened and fixed to the ultrasonic transducer is widened, that is,
To solve interference of resonance vibration generated in the width direction with respect to resonance vibration generated in the axial direction, increase in cutting resistance, increase in weight, etc. SOLUTION: A large end portion 28 connected and fixed to an output portion of an ultrasonic transducer and a small end portion 30 provided with a tip tool 29 having a blade portion 28a are continuously formed, and a large end portion 28 A portion other than the tip tool 29 in the small end portion 30 having a small thickness and a small cross-sectional area is referred to as a narrow width portion 1. Thereby, the width in the width direction is shortened in the narrow portion 1, so that the resonance vibration in the width direction is prevented, and the adverse effect due to the interference between the vibration generated in the axial direction and the vibration generated in the width direction does not occur. Further, the narrow end portion 1 and the large end portion 2 are formed by the narrow portion 1.
The cross-sectional area ratio with respect to 8 increases and the vibration amplitude of the tip tool 29 increases, so that the cutting resistance is reduced. Further, the narrow portion 1
The weight becomes lighter.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an ultrasonic peeling tool that is used by being fixedly connected to an ultrasonic vibrator and that is used to separate an adhered substance adhering to the surface of a workpiece from the workpiece using ultrasonic vibration.

[0002]

[Prior art]

 In buildings such as houses, a coating film or the like may be formed on the surface of the outer wall material in order to protect the outer wall material from deterioration over time due to the influence of the external environment. However, since such a coating also deteriorates with time and its protective performance deteriorates, it is necessary to remove the deteriorated coating once every several years from the outer wall material to form a new coating. Liquid honing, sand blasting, mechanical polishing, liquid coating and the like have been conventionally used as methods for removing the coating from the outer wall material. However, when these methods are carried out, there are problems that a large amount of waste such as waste liquid and dust is generated, and that disturbances such as noise and vibration are generated. Therefore, conventionally, an ultrasonic peeling device has been attracting attention as a device capable of removing the film from the outer wall material without causing such a problem. This ultrasonic peeling device peels a film from an outer wall material that is a workpiece by an ultrasonic peeling tool that is connected and fixed to an ultrasonic vibrator and vibrates ultrasonically.

An example of a conventional ultrasonic peeling device will be described with reference to FIGS. 2 and 3. FIG. 2 is a longitudinal side view of the ultrasonic peeling device shown together with a waveform diagram of ultrasonic vibration. FIG. 3 is a perspective view of the ultrasonic wave peeling tool. The ultrasonic peeling device 11 includes an apparatus main body 13 having an ultrasonic transducer 12 as a main component, and an ultrasonic peeling tool 14 connected and fixed to the ultrasonic transducer 12.

The device body 13 will be described. The ultrasonic transducer 12 is housed in a cylindrical case 15. In the ultrasonic vibrator 12, the electrostrictive element 18, the high-voltage side electrode 19, the electrostrictive element 20, and the ground side electrode 21 are sandwiched in order between the front horn 16 and the rear horn 17 in a sandwich shape. It is formed by firmly tightening with the tightening bolts 22. Such an ultrasonic transducer 12 has a flange 23 at a node position N1 of its vibration, and the flange 23 is fixedly housed in the case 15 by being fixed to the opening of the case 15 with a bolt 24. ing. A power cable 25 is drawn into the case 15, and the power cable 25 is connected to the high voltage side electrode 19 and the ground side electrode 21. Further, the front horn 16 has a horn shape that increases the vibration amplitude of the ultrasonic transducer 12, and the output part 26 at the tip thereof is positioned at the position where the vibration amplitude is maximized. A female screw 26a for connecting and fixing the ultrasonic peeling tool 14 is cut on the output portion 26.

Next, the ultrasonic peeling tool 14 will be described. The ultrasonic peeling tool 14 includes a large end portion 28 having a connecting portion 27 at the end portion that is connected and fixed to the output portion 26 of the ultrasonic transducer 12, and a large end portion 28 formed continuously from the large end portion 28. It consists of a small end 30 provided with a tip tool 29. The large end portion 28 has a female screw 27 a on the connecting portion 27, and the female screw 27 a and the female screw 26 a formed on the output portion 26 of the ultrasonic transducer 12 are screwed with the connecting screw 31 to connect the output portion 26 to the output portion 26. It is connected and fixed. The small end portion 30 is formed to have a small cross-sectional area by being gradually thinned from the node N2 position of the vibration transmitted from the ultrasonic transducer 12 to the ultrasonic peeling tool 14 via the connecting portion 27. . As a result, the boundary between the small end portion 30 and the large end portion 28 is located at the vibration node N2. The tip tool 29 has a linear blade portion 29a, and the blade portion 29a is positioned at a position where the amplitude of the vibration enlarged by the small end portion 30 is maximum. In the example shown in FIGS. 2 and 3, the tip tool 29 is integrally molded on the ultrasonic peeling tool 14, but the tip tool 29 uses a high hardness material such as cemented carbide on the ultrasonic peeling tool 14 main body. Alternatively, they may be joined and fixed by a method such as brazing.

With such a structure, when a voltage is applied to the two electrostrictive elements 18 and 20 through the high-voltage side electrode 19 and the ground side electrode 21, the electrostrictive elements 18 and 20 vibrate in the thickness direction, and the Ultrasonic vibration is generated at the output section 26 of the sound wave vibrator 12. This ultrasonic vibration is transmitted to the ultrasonic peeling tool 14 through the connecting portion 27 connected and fixed to the output portion 26. The amplitude of the ultrasonic vibration transmitted to the ultrasonic peeling tool 14 is enlarged in the small end portion 30 by the reciprocal of the cross-sectional area ratio between the small end portion 30 and the large end portion 28. As a result, the tip tool 29 vibrates at high frequency with large amplitude and acceleration. The waveform diagram in FIG. 2 shows the amplitude of the vibration generated in the ultrasonic peeling device 11 during operation. Here, the small end portion 30 that expands the amplitude of ultrasonic vibration has various forms from the conventional ones such as a step type, an exponential function type, a conical type, and a catenoidal type, depending on its shape. , The cross-sectional area is smaller than that of the large end portion 28 with the node N2 as a boundary, thereby expanding the vibration amplitude.

In order to peel the coating film from the outer wall material that is the workpiece using the ultrasonic peeling device 11, the blade portion 29a of the tip tool 29 is pressed against the coating portion, and the coating film is scraped by the blade portion 29a. At this time, the cutting resistance is significantly reduced due to the cutting resistance reduction effect of the ultrasonic vibration, and the work efficiency is improved. In addition, a large amount of waste such as waste liquid and dust is not generated during work, and many disturbances such as noise and vibration are not generated, which helps to protect the surrounding environment. Moreover, if the amount of waste and disturbance is reduced, it is not necessary to take measures such as covering the surrounding area of the building to be worked with a barrier.

Here, the length setting of the ultrasonic peeling tool 14 will be described. The length of the ultrasonic peeling tool 14 is determined by its material. In other words, as is generally known, regarding the vibration generated in the resonator, if the speed of sound of the resonator is V (m / sec), its resonance frequency is f (Hz), and its wavelength is λ (m), then λ = V / f The formula 1 is established, and the resonance phenomenon of ultrasonic waves is also restricted by this formula. Therefore, considering the ultrasonic wave peeling tool 14, the sound velocity V and the resonance frequency f in the above equation 1 are determined by the material of the ultrasonic peeling tool 14, and therefore the wavelength λ is also determined by the material of the ultrasonic peeling tool 14.

[0009]

[Problems to be solved by the device]

 In the field of ultrasonic peeling tools, there is a demand to increase the width CW of the blade portion 29a of the ultrasonic peeling tool 14 as illustrated in FIGS. 2 and 3 to improve work efficiency. However, if the entire ultrasonic peeling tool 14 is formed wide in order to widen the width CW of the blade portion 29a, various problems occur.

First, in the wide ultrasonic peeling tool 14, resonance vibration is generated also in the width direction, so that the resonance vibration in the width direction interferes with the original resonance vibration in the axial direction, resulting in poor vibration. However, there are problems such as a decrease in vibration efficiency and heat generation due to an increase in driving impedance. Generally, in the ultrasonic peeling tool 14, as the width becomes wider and approaches the length of λ / 4, a resonance phenomenon is more likely to occur in the width direction, which interferes with the original resonance in the axial direction to cause vibration failure or drive. This causes an increase in impedance.

Secondly, the wider the width CW of the blade portion 29a is, the more the cutting resistance is increased. Therefore, the burden on the operator is increased and the work efficiency is reduced.

Thirdly, if the ultrasonic peeling tool 14 is formed to have a wide width, the weight of the ultrasonic peeling tool 14 increases accordingly, which also increases the burden on the worker and lowers the work efficiency.

[0013]

[Means for Solving the Problems]

 An ultrasonic peeling tool according to a first aspect of the present invention has a large end portion having a connecting portion at an end portion that is connected and fixed to an output portion of an ultrasonic transducer, and a large end portion continuous with the large end portion rather than the large end portion. It has a small thickness, a small cross-sectional area, and a small end with a small tip part provided at the end with a tip tool having a blade at the amplitude position of the vibration transmitted from the ultrasonic transducer through the large end. Consists of a narrow width portion formed on the end portion other than the tip tool.

The ultrasonic peeling tool according to a second aspect of the present invention is such that the large end portion connected to and fixed to the output portion of the ultrasonic transducer and the large end portion that is continuous with the large end portion are more than the large end portion. An ultrasonic wave that is formed by a small thickness and a small cross-sectional area and has a tip tool that has a blade at the tip, and is driven by an ultrasonic transducer to vibrate the blade of the tip tool. In the peeling tool, the width of the small end portion other than the tip tool was narrowed.

An ultrasonic peeling tool according to a third aspect of the present invention is a large end having a connecting portion at an end that is connected and fixed to an output portion of an ultrasonic transducer, and the large end is continuous with the large end. It has a smaller thickness and a smaller cross-sectional area than the section, and has a blade at the amplitude position of the vibration transmitted from the ultrasonic transducer through the large end. And a narrow width portion formed in a portion other than the tip tool.

The ultrasonic peeling tool according to a fourth aspect of the invention has a large end portion connected to and fixed to the output portion of the ultrasonic transducer and a large end portion that is continuous with the large end portion and is larger than the large end portion. An ultrasonic wave that is formed by a small thickness and a small cross-sectional area and has a tip tool that has a blade at the tip, and is driven by an ultrasonic transducer to vibrate the blade of the tip tool. In the peeling tool, the width of the portion other than the tip tool was formed narrow.

Therefore, in the ultrasonic peeling tool according to the first to fourth aspects, even if the blade portion of the tip tool is formed wide, the occurrence of resonance vibration in the width direction is prevented in the narrow portion. Therefore, there is no adverse effect caused by the interference of the resonance vibration in the width direction with the original resonance vibration in the axial direction. In addition, the weight of the ultrasonic peeling tool is reduced by the width of the narrow portion. Further, in the ultrasonic peeling tool according to claim 1 or 2, since the narrow portion is formed, the cross-sectional area of the large end is relatively large compared to the cross-sectional area of the small end. Become. Therefore, the vibration amplitude generated in the tip tool, which is enlarged by the reciprocal of the cross-sectional area of the small end and the large end, increases, and the cutting resistance does not increase even if the blade part of the tip tool is formed wide. .

[0018]

[Embodiment of device]

 An embodiment of the present invention will be described with reference to FIG. The same parts as those described based on FIGS. 2 and 3 are designated by the same reference numerals, and the description thereof will be omitted. FIG. 1A is a front view of the ultrasonic peeling tool shown together with a waveform diagram of ultrasonic vibration, and FIG. 1B is a plan view of the ultrasonic peeling tool.

In the ultrasonic peeling tool 14 of this embodiment, the narrow portion 1 is formed on the small end portion 30. As shown in FIG. 1B, the narrow portion 1 is formed in a shape like the ultrasonic peeling tool 14 is squeezed in its width direction except for the tip tool 29. Therefore, in the ultrasonic peeling tool 14 according to the present embodiment, the width W of the large end portion 28 and the width CW of the tip tool including the blade portion 29a are formed to be the same width. Also, the width NW of the narrow portion 1 is formed narrower. Regarding the width W of the large end portion 28 and the width CW of the tip tool, the width of the ultrasonic peeling tool 14 of the present embodiment is larger than that of the conventional ultrasonic peeling tool 14 as shown in FIG. Widely formed. Specifically, the width W of the large end portion 28 and the width CW of the tip tool are set to a length of about a quarter of the wavelength λ of the ultrasonic peeling tool 14. The boundary between the large end portion 28 and the small end portion 30 is located at the node N2, the large end portion 28 has a thickness T1, and the small end portion 30 has a thickness T2. Further, the total length of the ultrasonic peeling tool 14 is set to L.

In such a configuration, the ultrasonic peeling tool 14 fastened and fixed to the apparatus main body 13 is driven by the ultrasonic vibrator 12 to resonate and vibrate with a waveform as shown in FIG. 1A. . At this time, the width W of the large end portion 28 and the width CW of the tip tool 29 provided at the small end portion 30 are set to 1 of the wavelength λ of the ultrasonic peeling tool 14, which is considered to cause resonance vibration in the width direction. Although it is set to / 4, the width NW of the narrow portion 1 is narrower than that, so that the ultrasonic peeling tool 14 does not generate resonance vibration in the width direction. Therefore, the original axial resonance vibration generated in the ultrasonic peeling tool 14 does not interfere with the resonance vibrations in the other directions, and the adverse effects caused by such interference, for example, due to poor vibration and increase in drive impedance. No reduction in vibration efficiency or heat generation. Therefore, the width CW of the tip tool 29 including the blade portion 29a can be formed to be as wide as a little less than λ / 4 to improve work efficiency.

Further, with respect to the cross-sectional area ratio of the large end portion 28 and the small end portion 30 which is understood from the relationship between the thickness T1 of the large end portion 28 and the thickness T2 of the small end portion 30, the narrow portion 1 Makes the cross-sectional area of the large end 28 relatively larger than the cross-sectional area of the small end 30. Therefore, the vibration amplitude generated in the tip tool 29, which is enlarged by the reciprocal of the cross-sectional area of the small end portion 30 and the large end portion 28, increases, and even if the blade portion 29a of the tip tool 29 is wide, its cutting resistance is increased. Does not increase. Therefore, the workability of the peeling work is improved, and the work efficiency can be improved.

Further, the weight of the ultrasonic peeling tool 14 is reduced by the width of the narrow portion 1, and even if the width W of the large end portion 28 and the width CW of the tip end tool 29 are wider than those in the conventional case, the ultrasonic peeling tool 14 is not necessary. The total weight of the rule 14 does not increase. As a result, the operator is not burdened with an increase in the weight of the ultrasonic peeling device 11, and the work efficiency can be improved in this respect as well.

In implementation, each part may be set in a dimensional relationship of width CW> width NW = width W. That is, the width W of the large end portion 28 may be set to be the same as the width NW of the narrow portion 1 and both the widths W and NW may be formed to be narrower than the width CW of the tip tool 29. With such a configuration as well, it is possible to obtain substantially the same operational effects as the present embodiment.

[0024]

[Effect of device]

 In the ultrasonic peeling tool according to the first to fourth aspects of the present invention, since the width of the front part or a part of the part other than the tip tool is formed narrow, the width of the blade part of the tip tool is widened to improve work efficiency. Even if the improvement is attempted, it is possible to prevent the interference of the resonance vibration in the width direction with the original resonance vibration in the axial direction, and the adverse effects caused by such interference, for example, due to the vibration failure or the increase of the driving impedance. It is possible to prevent a decrease in vibration efficiency and heat generation. In this case, even if the width of the blade part of the tip tool is set to a length that is approximately a quarter of the vibration wavelength of the ultrasonic peeling tool, which is said to cause resonance vibration in the width direction, Resonant vibration does not occur.

Particularly, in the invention according to claim 1 or 2, since the narrow shape of the small end portion relatively increases the cross-sectional area of the large end portion with respect to the cross-sectional area of the small end portion, It is possible to increase the vibration amplitude generated in the tip tool, which is enlarged by the reciprocal of the cross-sectional area with the large end, and thus improve the work efficiency without increasing the cutting resistance even if the tip tool is formed wide. Can be planned.

Further, since the weight is reduced by the width of the narrow portion, the worker is not burdened with the work, and the work efficiency can be improved also from this aspect.

[Brief description of drawings]

1 shows an embodiment of the present invention, (a) is a front view of an ultrasonic peeling tool shown together with a waveform diagram of ultrasonic vibration, and (b) is a plan view of the ultrasonic peeling tool.

FIG. 2 is a vertical sectional side view showing an example of a conventional ultrasonic peeling device together with a waveform diagram of ultrasonic vibration.

FIG. 3 is a perspective view of an ultrasonic peeling tool.

[Explanation of symbols]

 1 Narrow Section 12 Ultrasonic Transducer 26 Output Section 27 Connecting Section 28 Large End 29 Tip Tool 29a Blade 30 Small End N2 Node

Claims (4)

[Scope of utility model registration request] 1. A large end portion having a connecting portion at an end portion, which is connected and fixed to an output portion of an ultrasonic transducer, and a thin section which is continuous with the large end portion and has a thickness smaller than that of the large end portion. A small end formed at a small end, the tip having a blade at the amplitude position of the vibration transmitted from the ultrasonic transducer through the large end, and the tip at the small end. An ultrasonic peeling tool comprising: a narrow portion having a narrow width formed on a portion other than the tool. 2. A large end portion connected and fixed to an output portion of an ultrasonic transducer, and a thin end portion which is continuous with the large end portion and has a smaller cross-sectional area than the large end portion, is formed at the tip end portion. An ultrasonic peeling tool consisting of a small end provided with a tip tool having a blade, wherein the blade of the tip tool vibrates when driven by the ultrasonic vibrator, other than the tip tool at the small end. The ultrasonic peeling tool is characterized in that the width of the portion is formed narrow. 3. A large end portion having a connecting portion at an end portion, which is connected and fixed to an output portion of the ultrasonic transducer, and a thin cross-sectional area which is continuous with the large end portion and is thinner than the large end portion. A small end portion, which is formed small and has a blade portion at the amplitude position of the vibration transmitted from the ultrasonic transducer through the large end portion, and a small end portion provided at the end portion, An ultrasonic peeling tool comprising: a formed narrow portion. 4. A large end portion connected and fixed to an output portion of an ultrasonic transducer, and a large end portion which is continuous with the large end portion and has a smaller thickness and a smaller cross-sectional area than the large end portion. In an ultrasonic peeling tool, which comprises a small end portion provided with a tip tool having a blade portion, and in which the blade portion of the tip tool vibrates when driven by the ultrasonic transducer, the width of the portion other than the tip tool is An ultrasonic peeling tool characterized by being formed narrow.