JP5316889B2 - Ultrasonic cutter device and tool horn for ultrasonic cutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem in conventional air-cooled type ultrasonic cutter devices that, even if large amount of air is blown, no cutter bodies and cutter knives are cooled down from the inside, instead, heat is accumulated causing the frequency fluctuation of ultrasonic vibration and the decrease of vibration amplitude, resulting in the degradation of cutting performance of the cutter. <P>SOLUTION: The cutter body with an ultrasonic vibrator and a horn is surrounded by a duct member, where air flows to cool the cutter body. Cooling holes are communicatingly provided in a horn of the cutter body, and in a tool horn for fixing the cutter knife. Air having cooled the cutter body is introduced to the cooling hole in the tool horn, so as to cool the tool horn inside, the cutter knife, and the fixing portion of the cutter knife. Cooling grooves are provided from the cooling hole in the tool horn along the surface of the cutter knife, to allow the air to blow to the tip of the cutter knife. The bent portion provided in the slit for fixing the cutter knife of the tool horn is used as a stopper of the cutter knife. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to an ultrasonic cutter device and a tool horn for an ultrasonic cutter device , and in particular, an ultrasonic cutter device and an ultrasonic wave that cool a cutter blade and a heat generating portion of the tool horn that fixes the cutter blade. The present invention relates to a tool horn for a cutter device .

  Conventionally, in an ultrasonic cutter device that cuts a sheet of cloth, plastic, or the like, heat generation of a horn or heat generation of a cutter blade due to ultrasonic vibration has been a problem. When the horn or the cutter blade generates heat in the ultrasonic cutter device, the vibration frequency of the ultrasonic wave fluctuates or the amplitude decreases, and the cutter blade does not vibrate in a predetermined manner. Then, problems such as resin sticking to the cutter blade and the sharpness of the cutter blade worsening, or the screws fixing the cutter blade loosen have occurred. Therefore, an ultrasonic cutter device provided with a cooling means has been proposed so as not to cause inconvenience or failure due to heat.

  An example of the ultrasonic cutter apparatus provided with the conventional cooling means is shown in FIG. In the ultrasonic cutter device shown in FIG. 10, a cutter main body 23 including an ultrasonic transducer 21 and a horn 22 is covered with a duct member 31, and a duct 32 between the cutter main body 23 and the duct member 31 is supplied from a blower 33 to room temperature. It is air-cooled by sending air. Air from the blower 33 descends in the duct 32 as indicated by an arrow J in FIG. 10, and cools the cutter body 23 including the ultrasonic vibrator 21 and the horn 22. Thereafter, air flows toward the cutter blade 24 attached to the tip of the horn 22 as indicated by the K arrow, and cools the cutter blade 24 as indicated by the L arrow. And it discharge | releases to external air like M arrow from the clearance gap between the workpiece | work 50 which is the sheet | seat cut | disconnected with the duct member 31, and the heat | fever of the cutter main body 23 and the cutter blade 24 is exhausted.

  In the ultrasonic cutter apparatus of FIG. 10, the workpiece 50 is placed on the anvil 44 and moves along with the anvil 44 on the frame 41. In the ultrasonic cutter apparatus of FIG. 10, the anvil 44 moves from the back to the front with respect to the paper surface. The cutter body 23 with the cutter blade 24 is moved up and down by the driving means 43 while being held integrally with the holding means 42 that moves up and down on the frame 41 of the ultrasonic cutter device. The cutter body 23 with the cutter blade 24 is lowered, and the cutter blade 24 that is ultrasonically vibrated cuts the workpiece 50 on the anvil 44 (see, for example, Patent Document 1).

  However, in the conventional example of FIG. 10, (1) since the cutter body 23 is covered with the duct member 31, the apparatus becomes large. (2) Since the vicinity of the tip of the cutter blade 24 is covered with the duct member 31, the cutting operation status cannot be seen from the outside. (3) It is necessary to send a large amount of air for air cooling. (4) Although the outer surfaces of the cutter body 23 and the cutter blade 24 are cooled, the inside of the cutter body 23 and the fixed portion of the cutter blade 24 are not cooled. (5) There was a problem that the fixing screw was loosened by the heat of the fixing portion of the cutter blade 24.

As another cooling method, as shown in FIG. 11, the air nozzle 81 is directed to the cutter blade 64 attached to the tip of the cutter body 63 and air is blown from the air nozzle 81 to locally air-cool (in some cases, water-cooling). ) Has been used (see, for example, Patent Document 2).
Since the method of FIG. 11 does not use a duct member, the apparatus is simplified and is excellent in that the vicinity of the tip of the cutter blade 64 can be visually observed. However, (1) it is still necessary to send a large amount of air for air cooling. (2) Although the outer surface of the cutter blade is cooled, the inside of the cutter body 63 and the fixed portion of the cutter blade 64 are not cooled. (3) There was a problem that the fixing screw was loosened by the heat of the fixing portion of the cutter blade 64.

  As a measure for preventing the loosening of the fixing screw, a method of firmly fixing the cutter blade has been proposed. For example, as shown in FIG. 12, a groove portion 103 having a pair of opposed inner wall surfaces 102a and 102b for inserting and holding the processing blade 92 in a part of the main body 101 holding the processing blade 92 having the U-shaped groove 91. In the processing blade holder configured to be able to adjust the interval of the groove portion 103 by the screw member 110 screwed in a direction perpendicular to the groove direction of the groove portion 103, the processing blade 92 and the processing blade 92 are substantially arranged on the opposing inner wall surface of the groove portion 103. A method is known in which equal enlarged groove portions 105 are formed, the attached processing blade 92 is not slackened by vibration, and noise is prevented, and heat generation and loss due to friction are prevented in advance (for example, Patent Documents). 3).

JP 2003-266378 A JP 2001-334494 A JP 2000-326291 A

  The present invention relates to a cutter blade and a fixed portion of the cutter blade from air (air) supplied from a cooling medium supply means such as a blower, or a cooling medium such as an inert gas including argon gas (hereinafter referred to as “air”). Etc.) and by suppressing the heat generation of the cutter blade and the tool horn holding the cutter blade, the fluctuation of the ultrasonic vibration frequency and the decrease in the amplitude are suppressed, and the cutter blade has a predetermined vibration. Let The first challenge is to prevent the resin from adhering to the cutter blade and to maintain the sharpness of the cutter blade.

Moreover, this invention makes it the 2nd subject to save consumption of cooling media, such as air supplied from cooling-medium supply means, such as an air blower.
In addition, the present invention has a third object of simplifying the apparatus so that the vicinity of the cutter blade edge can be seen from the outside.
In addition, the present invention suppresses the heat generation of the cutter blade and the tool horn that fixes the cutter blade, and at the same time, makes the cutter blade easy to position and fix, and has a mounting structure that does not loosen after fixing the cutter blade. The fourth problem is to eliminate the need for state check work and retightening work.

  In order to solve these problems, the ultrasonic cutter device of the present invention surrounds only the cutter body with a duct member, supplies air from the cooling medium supply port of the duct member, and constitutes the cutter body. Cool the child and horn with air. And the inside of the horn of the cutter body part and the inside of the tool horn that fixes the cutter blade are provided to communicate with the cooling holes, respectively, and the air that has cooled the cutter body part is passed through the cooling hole of the tool horn, The inside of the tool horn, the fixed part of the cutter blade, and the cutter blade are cooled.

  This configuration prevents fluctuations in the vibration frequency and amplitude of the horn and tool horn, causes the cutter blade to vibrate in a predetermined manner, prevents resin from adhering to the cutter blade, and maintains the sharpness of the cutter blade. Has solved. In addition, the second problem of saving consumption of a cooling medium such as air is solved. Moreover, the 3rd subject of simplifying an apparatus and enabling it to visually recognize the cutter blade edge vicinity from the outside is solved.

And in the ultrasonic horn device and the tool horn for the ultrasonic cutter device of the present invention, the length of the cutter blade fixing slit of the tool horn is lengthened to refract the middle portion, and the end face of the cutter blade is attached to the refracted portion of the slit. Positioning is fixed.
With this configuration, the cooling hole on the base side of the refracted portion of the slit functions as a cooling space, so that the heat of the cutter blade and the tool horn that fixes the cutter blade can be dissipated. This solves the fourth problem that it is easy to position and fix the cutter blade, makes it difficult to loosen after fixing the cutter blade, and eliminates the need to check and retighten the cutter blade.

Moreover, in this invention, the groove | channel for cooling along the surface of a cutter blade is provided from the hole for cooling inside a tool horn, and air etc. are blown off to the cutter blade front-end | tip.
With this configuration, at the same time as solving the above-described problems, the effect of cooling the surface of the cutter blade and the tip of the cutter blade can be obtained as in the case where the air nozzle is attached.

The present invention cools the inside of the cutter body and the fixed portion of the cutter blade with air or the like, thereby suppressing the heat generation of the cutter blade and the fixed portion of the cutter blade, and reducing fluctuations in the vibration frequency and amplitude of the ultrasonic waves. It is possible to suppress the vibration and cause the cutter blade to vibrate. And adhesion of resin to a cutter blade can be prevented and the sharpness of a cutter blade can be maintained.
Further, the present invention can save consumption of a cooling medium such as air.

Further, the present invention can simplify the apparatus so that the vicinity of the cutter blade edge can be seen from the outside.
In addition, the present invention suppresses heat generation of the cutter blade and the tool horn that fixes the cutter blade, and at the same time facilitates positioning and fixing of the cutter blade, and has a mounting structure that does not loosen after the cutter blade is fixed. This eliminates the need to check and retighten the fixed state.

  In the present invention, a cooling groove is provided along the surface of the cutter blade from the cooling hole inside the tool horn so that air is blown to the tip of the cutter blade. The same cooling effect as that obtained when the air nozzle is attached to is obtained.

The side view which made one part a cross section when connecting the tool horn with a cutter blade to the cutter main body of the ultrasonic cutter apparatus concerning Embodiment 1 of this invention. The external appearance perspective view which decomposed | disassembled the tool horn of the ultrasonic cutter apparatus concerning Embodiment 1 of this invention, the cutter blade, and the fixing screw, and was seen from the downward direction. The external appearance perspective view which fixed the cutter blade to the tool horn of the ultrasonic cutter apparatus concerning Embodiment 1 of this invention, and was seen from the downward direction. (A) Side view of another tool horn according to the first embodiment of the present invention, (b) Side view of another tool horn according to the first embodiment of the present invention, (c) First embodiment of the present invention. The side view of the other tool horn concerning. The external appearance perspective view which decomposed | disassembled the tool horn, cutter blade, and fixing screw of the ultrasonic cutter apparatus concerning Embodiment 2 of this invention, and was seen from the downward direction. The external appearance perspective view which fixed the cutter blade to the tool horn of the ultrasonic cutter apparatus concerning Embodiment 2 of this invention, and was seen from the downward direction. The side view which made a part a cross section when connecting the tool horn with a cutter blade to the cutter main body of the ultrasonic cutter apparatus concerning Embodiment 2 of this invention. The side view which made a part a cross section when connecting the tool horn with a cutter blade to the cutter main body of the ultrasonic cutter apparatus concerning Embodiment 3 of this invention. The side view which made the cross section a part when connecting the tool horn with a cutter blade to the cutter main body of the ultrasonic cutter apparatus concerning Embodiment 4 of this invention. The side view which made a part of conventional ultrasonic cutter apparatus a cross section. The external appearance perspective view of the principal part of the conventional ultrasonic cutter apparatus. The disassembled perspective view of the cutter blade of the conventional ultrasonic cutter apparatus, a cutter holder, and a fixing screw.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view, partly in section, of a tool horn with a cutter blade according to a first embodiment of the present invention connected to a cutter body.
In the present invention, as shown in FIG. 1, the cutter blade 1 is clamped and fixed by the fixing screw 3 while being sandwiched between slits 2 a provided at the tip of the tool horn 2. A male screw portion 2 d is cut out on the upper end surface of the tool horn 2, and is attached to the cutter body 4 integrally. The cutter body 4 is an assembly of an ultrasonic transducer 4a, a horn 4b, and a duct member 4d. The upper end surface of the tool horn 2, that is, the lower end surface of the horn 4b facing the base side of the tool horn 2, is provided with a female screw portion to which the male screw portion 2d of the tool horn 2 is screwed. The cutter body 4 is fixed integrally. Further, a flange 4c is provided at a position that becomes a node of ultrasonic vibration of the horn 4b, and the duct member 4d is integrally fixed with a screw (not shown).

  To the cutter body 4, electric power and an ultrasonic vibration signal are supplied to an ultrasonic vibrator 4a from an ultrasonic supply means (not shown), and the horn 4b is vibrated by the ultrasonic vibrator 4a. The horn 4b has a cylindrical shape, and a through hole 5a is opened in the radial direction. A horn cooling hole 5b is opened downward along the axis of the horn 4b in a T shape with respect to the through hole 5a. . The through hole 5a and the horn cooling hole 5b correspond to the cooling hole of the present invention in the horn 4b. The duct member 4d of the cutter body 4 covers the ultrasonic transducer 4a and the horn 4b.

A cooling medium supply means such as a blower (not shown) feeds air or the like from the cooling medium supply port 4e above the duct member as indicated by an arrow A. Air or the like descends in the duct member 4d as indicated by arrow B, and descends from the through hole 5a toward the tool horn 2 through the horn cooling hole 5b as indicated by arrows C and D.
The tool horn 2 has a stepped cylindrical shape, and a tool horn cooling hole 6 communicating with the horn cooling hole 5b of the horn 4b is opened at the axial center of the tool horn 2. This tool horn cooling hole 6 corresponds to the cooling hole of the present invention in the tool horn 2. Then, air or the like sent from the horn cooling hole 5b of the horn 4b flows through the tool horn cooling hole 6 as shown by an arrow E and hits the end face of the cutter blade 1 sandwiched between the slits 2a of the tool horn 2. The air or the like that hits the end face of the cutter blade 1 takes heat of the cutter blade 1 or the fixed portion of the cutter blade and is released to the outside air.

  FIG. 2 is an external perspective view of a tool horn, a cutter blade, and a fixing screw of the ultrasonic cutter device according to the first embodiment of the present invention, as viewed from below. The cutter blade 1 has a sharpened blade surface 1a, and an end opposite to the blade surface 1a is a flat end surface 1b. The slit of the tool horn 2 is refracted halfway to form a raised portion 2b, and a slit 2a portion below the raised portion 2b and an upper heat radiation hole 2c are formed. This heat radiating hole 2c also corresponds to the cooling hole of the present invention. In addition, the slit is formed with a concave portion along the shape of the raised portion 2b on the surface facing the surface where the raised portion 2b is formed so as to ensure a slit width of a certain width or larger so that air or the like can pass through the raised portion 2b. Has been. Then, the cutter blade 1 is sandwiched between the slits 2a below, and the raised portion 2b is positioned against the flat end surface 1b of the cutter blade 1. The raised portion 2b serves as a stopper portion of the cutter blade 1. ing. An attachment hole 1c is opened in the center of the flat portion of the cutter blade 1 so that the fixing screw 3 can pass therethrough. The cutter blade 1 is provided with the mounting hole 1c instead of the conventional U-shaped groove, even if the fixing screw 3 is loosened, while the fixing screw 3 is not completely detached from the tool horn 2, the fixing screw This is because 3 is caught in the attachment hole 1c of the cutter blade 1 and the cutter blade 1 can be prevented from falling off. When the fixing screw 3 is tightened, the tip side of the tool horn 2 bends from the root of the heat radiation hole 2c. Since the slit of the tool horn 2 is sufficiently long, even if the fixing screw 3 is tightened strongly, the bending length of the portion holding the cutter blade 1 is long, and the portion holding the cutter blade 1 is not broken. The cutter blade 1 is firmly fixed to the tool horn 2.

The heat radiating hole 2c above the raised portion 2b is a space where the cutter blade 1 cannot be attached, and the air that hits the end face of the cutter blade 1 through the heat radiating hole 2c takes the heat of the cutter blade 1 and the fixed portion of the cutter blade. And then released to the outside air.
FIG. 3 shows an external perspective view when the cutter blade is fixed to the tool horn of the ultrasonic cutter device according to the first embodiment of the present invention and viewed from below. For simplicity, the cutter body 4 is not shown in FIG. As shown in FIG. 3, the air or the like flowing from the cutter body 4 as indicated by the arrow D passes through the tool horn cooling hole 6 as indicated by the arrow E and collides with the end surface 1 b of the cutter blade 1. The fixed part of the cutter blade 1 and the cutter blade 1 is cooled by air or the like sprayed on the end face 1b.

  In this invention, the means to cool the fixed part of the cutter blade 1 from the inside was newly provided. In the present invention, since the fixed portion of the cutter blade 1 and the cutter blade 1 is cooled with air or the like, the heat generated at the tip of the cutter blade 1 is dissipated at the fixed portion of the cutter blade 1 and the cutter blade 1 is fixed. I try not to go up from the part. And the heat_generation | fever of the cutter blade 1 whole can be cooled stably and can be suppressed by making the heat release amount thermally radiated in the fixed part of the cutter blade 1 larger than the heat generation amount generated at the tip of the cutter blade 1.

  In the above description, when the raised portion 2b is formed by refracting the middle of the slit of the tool horn 2, and when the portion of the slit 2a below the raised portion 2b and the upper heat radiation hole 2c are formed, the raised portion 2b. An example in which the surface of the surface is formed as a curved surface has been described. However, as to how to form the raised portion, the middle of the slit may be refracted at a right angle as shown in FIGS. 4A, 4B, and 4C, for example. FIG. 4A shows an example in which a raised portion 2d that refracts the middle of the slit into a U-shape and supports the end face 1b of the cutter blade with a flat surface is shown. FIG. 4B shows an example in which a raised portion 2e having a flat surface and a slope is provided in the middle of the slit. FIG. 4C shows an example in which a raised portion 2f having a flat surface and a curved surface is provided in the middle of the slit. If the surface that contacts the end face 1b of the raised blade of the raised portion is made flat like these raised portions 2d, 2e, and 2f, the cutter blade 1 can be positioned and fixed more reliably. Note that it is possible to easily select which of the raised portions 2d, 2e, and 2f or another slit shape is adopted by changing the processing conditions for wire cutting, for example.

  In addition, since the heat radiation hole 2c functions as a space for heat radiation, the heat of the cutter blade and the tool horn that fixes the cutter blade can be dissipated. This can efficiently dissipate heat even when the supply amount of air or the like by the cooling medium supply means such as a blower is small. In particular, when the calorific value is small, even when the supply of air or the like by the cooling medium supply means is stopped, the heat of the cutter blade 1 or the fixed portion of the cutter blade can be cooled by the heat radiation from the heat radiation hole 2c.

(Embodiment 2)
Next, an ultrasonic cutter device according to the second embodiment of the present invention will be described. In the second embodiment, in addition to the configuration of the first embodiment, a cooling groove is added along the flat portion forming the surface of the cutter blade from the cooling hole inside the tool horn, and air or the like is blown to the tip of the cutter blade. There is a feature in this point.
FIG. 5 is an external perspective view of a tool horn, a cutter blade, and a fixing screw of the ultrasonic cutter device according to the second embodiment of the present invention, as viewed from below. In the slit 2 a of the tool horn 2, cooling grooves 2 g and 2 h are provided along the flat portion of the cutter blade 1. The cooling grooves 2g and 2h can be easily formed by opening a round hole in the axial direction at the tip of the tool horn and then wire cutting the slit.

Although FIG. 5 shows the case where the cooling grooves 2g and 2h are provided from the raised portion 2b to the tip of the tool horn 2, the cooling grooves 2g and 2h are provided from above the heat radiation hole 2c to the tip of the tool horn 2. May be. In this way, air or the like sent from the tool horn cooling hole 6 can easily flow toward the cutter blade 1.
FIG. 6 shows an external perspective view of the cutter blade fixed to the tool horn of the ultrasonic cutter device according to the second embodiment of the present invention as seen from below. In FIG. 6, a flow path such as air is formed between the cooling grooves 2 g and 2 h provided in the tool horn 2 and the flat portion of the cutter blade 1 as indicated by arrows G and H. As shown in FIG. 6, air or the like flowing from a cutter body 4 (not shown) as shown by an arrow D passes through the tool horn cooling hole 6 as shown by an arrow E and collides with the end face 1b of the cutter blade. The cutter blade 1 is cooled by air or the like sprayed on the end face 1b. And the plane part and front-end | tip of the cutter blade 1 are cooled by the air etc. which flow below along the plane part of the cutter blade 1 like G arrow and H arrow.

  FIG. 7: is the side view which made the cross section a part when the tool horn with a cutter blade concerning Embodiment 2 of this invention was connected with the cutter main body. In the second embodiment of the present invention, instead of cutting out the upper end surface of the tool horn 2 to form the male screw portion, the female screw portion 2e is formed, and the female screw on the lower end surface of the horn 4b of the cutter body 4 is formed. The tool horn 2 and the horn 4b of the cutter body 4 are fixed together using a bolt 17 screwed in advance to the part. Whether to cut out the upper end surface of the tool horn 2 to form a male screw portion or to use the bolt 17 as shown in FIG. 7 may be arbitrarily selected according to the situation.

  In the ultrasonic cutter device according to the second embodiment of the present invention, air or the like is blown from the inside of the tool horn 2 to the end face 1b of the cutter blade 1 and the fixed portion of the cutter blade 1 to cool the air, and the air etc. The part is made to flow toward the tip of the cutter blade 1 along the flat portion of the cutter blade 1. Therefore, the tip portion of the tool horn 2 that fixes the cutter blade 1 and the cutter blade 1 can be cooled as a whole.

(Embodiment 3)
The ultrasonic cutter apparatus concerning Embodiment 3 of this invention is demonstrated. In Embodiment 3, the cutter body and a part of the tool horn are surrounded by a duct member, a cooling hole is provided inside the tool horn, and air is supplied from the cooling medium supply port of the duct member by a cooling medium supply means such as a blower. , The ultrasonic vibrator that constitutes the cutter body, the horn is cooled with air, etc., the air that has cooled the cutter body is passed through the cooling hole of the tool horn, the inside of the tool horn and the cutter blade, and It is characterized in that the fixed part of the cutter blade is cooled.

  FIG. 8 shows a side view of the ultrasonic cutter device according to the third embodiment of the present invention. Most of the parts are the same as the configurations of FIGS. 1 and 7 of the present invention already described, but the duct member 4d extends until it covers the upper part of the tool horn 2, and the horn 4b has no cooling holes. The tool horn 2 is characterized in that a through hole 16a is formed above the tool horn 2 and a tool horn cooling hole 16b that intersects the through hole 16a in a T shape. The tool horn through hole 16a and the tool horn cooling hole 16b correspond to the cooling holes in the third embodiment of the present invention.

  In FIG. 8, when air or the like is sent as shown by an arrow A from a cooling medium supply port 4e such as air above by a cooling medium supply means (not shown), the air or the like descends in the duct member 4d as shown by an arrow B. , Descend toward the tool horn 2. Air or the like passes through the tool horn cooling hole 16b from the through hole 16a of the tool horn 2 and blows to the upper end and the fixed portion of the cutter blade 1 as indicated by the arrow Q.

When the cooling hole is not opened in the horn 4b of the cutter body or when the amount of heat generated by the horn 4b is small, the inside of the tool horn 2 is cooled with air or the like as in the third embodiment of the present invention. Heat generation of the cutter body 4, the cutter blade 1, and the fixed portion of the cutter blade 1 can be prevented.
In FIG. 8, the duct member 4d is fixed to the flange 4c as a node of ultrasonic vibration by the horn 4b of the cutter body, as in the other embodiments already described. For this reason, the fixing structure is omitted. Since there is a gap between the lower part of the duct member 4d and the outer peripheral surface of the tool horn 2, a flexible seal member 18 such as a sponge that blocks the flow of air or the like is disposed.

(Embodiment 4)
Embodiment 4 of the present invention is characterized in that a cooling medium is directly supplied to a cooling hole provided in a tool horn. The cutter body having the ultrasonic vibrator and the horn generates little heat, and is effective for cooling the cutter blade and the fixed portion of the cutter blade with a cooling medium.
In FIG. 9, the side view which made one part a cross section when connecting the tool horn with a cutter blade to the cutter main body of the ultrasonic cutter apparatus of Embodiment 4 of this invention is shown. In FIG. 9, since the heat generation of the cutter body is small, a duct that covers the cutter body 4 is not provided, and the cooling medium supply pipe 17 is directly connected to the tool horn 2. The cooling medium supply pipe 17 may be a flexible tube or a flexible pipe, and is provided at a position that becomes a node of ultrasonic vibration of the tool horn. A radial hole 18a and an axial hole 18b are formed in the tool horn 2 to which the cooling medium supply pipe 17 is attached. These holes 18a and 18b correspond to the cooling holes of the tool horn 2 according to the present invention.

  When air or the like is supplied from a cooling medium supply device (not shown) to the cooling medium supply pipe 17 as indicated by the U arrow, the air or the like blows inside the tool horn 2 to the upper end and the fixed portion of the cutter blade 1 as indicated by the Q arrow. Other configurations are the same as those of the embodiment already described. With this configuration, the inside of the tool horn, the cutter blade, and the fixed portion of the cutter blade are cooled by the cooling medium.

The present invention can be applied to an ultrasonic cutter device that cuts a sheet such as a cloth with an ultrasonic cutter. The workpiece to be cut may be a plastic sheet or plastic plate as well as a sheet or plate other than plastic, and the present invention can be applied to an ultrasonic cutter device for these.
Further, the present invention has been described for the case of so-called air cooling in which cooling is performed with air or the like. However, a cooling medium other than a cooling medium such as air (air) or an inert gas including argon gas, for example, a liquid such as water. The present invention can also be applied to an ultrasonic cutter device that cools a cutter body and a cutter blade using a cooling medium.

  In the present invention, the heat radiation hole 2c functioning as a heat radiation space is provided above the fixed portion of the cutter blade. Therefore, even when the supply amount of air or the like by the cooling medium supply means such as a blower is small, the heat can be efficiently dissipated, and when the heat generation amount is small, the supply of air or the like by the cooling medium supply means is stopped. Even in this case, the heat of the cutter blade 1 and the fixed portion of the cutter blade can be cooled by the heat radiation from the heat radiation hole 2c.

DESCRIPTION OF SYMBOLS 1 Cutter blade 2 Tool horn 2a Slit 2b Raised part 2c Radiation hole 2g, 2h Cooling groove 3 Fixing screw 4 Cutter body 4a Ultrasonic vibrator 4b Horn 4c Flange 4d Duct member 5a Through hole 5b Horn cooling hole 6 Tool horn cooling hole

Claims (2)

A tool horn that is clamped by a cutter blade fixing slit at the tip, and fixed,
A cutter main body having an ultrasonic vibrator that is connected to a base side of the tool horn and capable of transmitting ultrasonic vibration to the tool horn;
A part of the cutter blade fixing slit of the tool horn is refracted, the refracted portion is used as a stopper portion of the cutter blade, the cooling hole on the base side of the tool horn from the refracted portion is used for heat dissipation of the cutter blade and the cutter fixing portion. An ultrasonic cutter device characterized by being a space. A tool horn that clamps and fixes a cutter blade by a cutter blade fixing slit formed at the tip,
The tool horn is connected to the base side of the tool horn with a cutter body having an ultrasonic vibrator to transmit ultrasonic vibrations , refracts a part of the cutter blade fixing slit, and refracts the refracted portion of the cutter blade. Stopper part
A tool horn for an ultrasonic cutter device, wherein a cooling hole functioning as a cooling space is formed on a base side of a refracted portion of the cutter blade fixing slit.

Images