JP6799867B1 - Ultrasonic roll seam device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic roll seam device capable of long-term continuous operation by suppressing the occurrence of wear and scratches of a disk-shaped anvil and a disk-shaped ultrasonic horn as much as possible. SOLUTION: The disk-shaped anvil 10 rotates in opposite directions and a disk-shaped ultrasonic horn 20 arranged to face the peripheral surface of the disk-shaped anvil 10, and the disk-shaped anvil 10 and the disk-shaped superconducting There is an ultrasonic roll seam device 100 for welding two laminated polypropylene film PPs, which are the objects to be welded, by sandwiching and transporting the PP to be welded, which is overlapped with the ultrasonic horn 20, and the disk-shaped anvil 10. A protrusion 11 is formed on the peripheral surface, and the height of the protrusion 11 is set to be slightly smaller than the thickness of the polypropylene film PP in which two sheets are stacked. [Selection diagram] Fig. 1

Description

The present invention relates to an ultrasonic roll seam device including a disk-shaped anvil and a disk-shaped ultrasonic horn facing the disk-shaped anvil, and particularly devises the shape of a protrusion formed on the peripheral surface of the disk-shaped anvil. This relates to an ultrasonic roll seam device that enables long-term continuous operation of a disk-shaped anvil and a disk-shaped ultrasonic horn.

As an ultrasonic bonding device for bonding sheet-shaped members to be bonded using ultrasonic waves, for example, the one disclosed in Patent Document 1 is known.

The ultrasonic bonding apparatus disclosed in Patent Document 1 sandwiches a member 90 to be bonded between the anvil 20 and the horns 31 and 32, and in this state, ultrasonic vibration is applied from the horns 31 and 32 to the member 90 to be bonded. By adding, the member 90 to be bonded is configured to be ultrasonically fused.

As an ultrasonic bonding device for continuously ultrasonically bonding a sheet-shaped member to be bonded as described above, an ultrasonic wave provided with a disk-shaped anvil and a disk-shaped ultrasonic horn facing the disk-shaped anvil. Roll seam devices have been proposed. In this ultrasonic roll seam device, a welding object is inserted between the disk-shaped anvil and the disk-shaped ultrasonic horn, and the disk-shaped anvil and the disk-shaped ultrasonic horn are rotated in opposite directions. At the same time, the welding target is sandwiched between the disk-shaped anvil and the disk-shaped ultrasonic horn, and in this state, ultrasonic vibration is applied from the disk-shaped ultrasonic horn to the welding target to obtain the welding target. It is configured to be ultrasonically melt-bonded while being conveyed.

Japanese Unexamined Patent Publication No. 2016-87666

However, when joining two layers of film or the like with the ultrasonic roll seam device, if the film is operated at a high load of 100 N or more or at a high speed of 20 m / min or more, the film is interposed. Despite this, there is a problem that the peripheral surface of the disk-shaped ultrasonic horn is worn or scratched by the impact load with the anvil, and proper joining cannot be performed.

Therefore, in order to ensure the welding of the welding object with a light load, a configuration in which a protrusion is formed on the peripheral surface of the disk-shaped anvil has also been proposed. However, in the case of the configuration in which the protrusion is formed on the peripheral surface of the disk-shaped anvil, the height of the protrusion is set to a height exceeding the height of the overlapped welding objects, and therefore the welding target. During the ultrasonic fusion bonding process of an object or during the adjustment of the ultrasonic roll seam device, the protrusions come into contact with the peripheral surface of the disc-shaped ultrasonic horn, which causes the peripheral surface of the disc-shaped ultrasonic horn to wear. There is a problem that the ultrasonic roll seam device becomes difficult to operate continuously for a long period of time due to scratches.

Therefore, an object of the present invention is to provide an ultrasonic roll seam device capable of long-term continuous operation by suppressing the occurrence of wear and scratches on the disc-shaped anvil and the disc-shaped ultrasonic horn as much as possible.

In order to achieve the above object, the invention of claim 1 includes a disk-shaped anvil that rotates in opposite directions and a disk-shaped ultrasonic horn that is arranged so as to face the peripheral surface of the disk-shaped anvil. There is an ultrasonic roll seam device that welds the welding object by sandwiching and transporting two overlapping objects to be welded between the disk-shaped anvil and the disk-shaped ultrasonic horn, and the disk-shaped anvil. of the circumferential surface have protrusions provided, the protrusions may exceed the thickness of one of the welding object within the two welding object the superposed, and the heavy topping two welding It has a height less than the thickness of the object, and when the width in the lateral direction is a and the height is b, the value of C = a / b is 1 to 10 .

The invention of claim 2 is characterized in that, in the invention of claim 1, the protrusion is composed of at least one row of protrusions formed linearly along the peripheral surface of the disk-shaped anvil. To do.

The invention of claim 3 is the invention of claim 1 , wherein the protrusion is composed of at least one row of protrusions formed by being curved in a wavy shape along the peripheral surface of the disk-shaped anvil. It is a feature.

The invention of claim 4 is characterized in that, in the invention of claim 1, the protrusions are composed of a large number of protrusions formed in a staggered manner along the peripheral surface of the disk-shaped anvil.

The invention of claim 5 is characterized in that, in the invention of claim 1, the protrusions are composed of a large number of flatfish-shaped protrusions formed orthogonally or inclined to the peripheral surface of the disk-shaped anvil. To do.

The invention of claim 6 is characterized in that, in the invention of claim 1, the protrusion is composed of a twill-shaped protrusion formed on the peripheral surface of the disk-shaped anvil.

The invention according to claim 7 is the invention according to claim 1 , wherein the protrusions are formed by arranging a plurality of square trapezoidal protrusions in one or more rows on the peripheral surface of the disk-shaped anvil. And.

The invention of claim 8 is characterized in that, in the invention of claim 1, the welding object is a sheet-shaped resin film laminated on two sheets.

The invention of claim 9 is characterized in that, in the invention of claim 8, the sheet-shaped resin film is a polypropylene film.

The invention of claim 10 is the invention according to any one of claims 1 to 9 , wherein the contact sensor that electrically detects the contact between the protrusion of the disk-shaped anvil and the disk-shaped ultrasonic horn is used. It is characterized by being provided.

The invention according to claim 11 is characterized in that, in the invention according to any one of claims 1 to 10, the cross-sectional shape of the disk-shaped anvil is made bellows-shaped.

According to the present invention, it has a disk-shaped anvil that rotates in opposite directions and a disk-shaped ultrasonic horn that is arranged so as to face the peripheral surface of the disk-shaped anvil, and the disk-shaped anvil and the disk-shaped super There is an ultrasonic roll seam device that welds the welding object by sandwiching and transporting the two welding objects stacked between the sound wave horn, and a protrusion is provided on the peripheral surface of the disk-shaped anvil. have been, the protrusions beyond the thickness of one of the welding object of said two weld object of extensive and high less than the thickness of said heavy topping two welding object When the width in the lateral direction is a and the height is b, the value of C = a / b is set to 1 to 10, so that the disc-shaped anvil and the disc-shaped ultrasonic horn can be used. It has the effect of being able to provide an ultrasonic roll seam device that enables long-term continuous operation by suppressing the occurrence of wear and scratches as much as possible.

FIG. 1 is a diagram showing an outline of an embodiment of an ultrasonic roll seam device according to the present invention. FIG. 2 is a side view of a main part of the ultrasonic roll seam device shown in FIG. FIG. 3 is a partial cross-sectional view illustrating a protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 4 is a partial perspective view and a cross-sectional view showing another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 5 is a partial top view and a cross-sectional view showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 6 is a partial perspective view and a main part perspective view showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 7 is a partial top view and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 8 is a partial top view and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 9 is a partial top view and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 10 is a partial top view, side view, cross-sectional view, and perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. Is. FIG. 11 is a diagram illustrating an example of a contact sensor used in the ultrasonic roll seam device described with reference to FIGS. 1 to 10. FIG. 12 is a diagram illustrating an example of the side shape of the disk-shaped anvil used in the ultrasonic roll seam apparatus described with reference to FIGS. 1 to 11.

Hereinafter, examples for carrying out the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a diagram showing an outline of an embodiment of an ultrasonic roll seam device according to the present invention, and FIG. 2 is a partial side view of the ultrasonic roll seam device shown in FIG.

In FIGS. 1 and 2, the ultrasonic roll seam device 100 according to this embodiment is used for melt-bonding, for example, two stacked sheet-shaped resin films, for example, polypropylene film PP, and is used in opposite directions. It has a rotating disk-shaped anvil 10 and a disk-shaped ultrasonic horn (hereinafter, simply referred to as a horn) 20 arranged to face the peripheral surface of the disk-shaped anvil 10.

The anvil 10 is rotationally driven by a motor 30 via a shaft 31.

The horn 20 is connected to the ultrasonic oscillator 40 via the shaft 41, and transmits the ultrasonic vibration oscillated by the ultrasonic oscillator 40 to the horn 20 via the shaft 40.

A pulley 32 is provided on the shaft 31 connected to the anvil 10, and the pulley 32 is attached to the pulley 42 provided on the shaft 41 connected to the horn 20 via the reversing mechanism 50 and the belts 33 and 43. It is connected with. Therefore, the horn 20 follows the rotation of the anvil 10 indicated by the arrow A and rotates in the direction opposite to the rotation of the anvil 10 as shown by the arrow B.

Further, the ultrasonic oscillator 40 is provided with a pressurizing device 60 that pressurizes the horn 20 downward.

In the above configuration, the two-layered polypropylene film PP, which is the object to be welded, is inserted between the anvil 10 and the horn 20, and the two-layered polypropylene film PP is pressed by the pressurizing device 60. It is sandwiched between the anvil 10 and the horn 20, and is conveyed in the direction indicated by the arrow X in FIG. 2 by the rotation of the anvil 10 and the horn 20.

Here, ultrasonic vibration is applied from the horn 20 to the two laminated polypropylene films PP, which is the object to be welded, and the two laminated polypropylene films PP are continuously melt-bonded by the ultrasonic vibration. ..

By the way, in the ultrasonic roll seam device 100 of this embodiment, in order to ensure the welding of the two laminated polypropylene films PP which are the objects to be welded, the protrusion 11 is formed on the peripheral surface of the disk-shaped anvil 10. (Protrusions 11a, 11b) are formed. The height b of the protrusion 11 is set to be slightly smaller than the thickness of the two laminated polypropylene films PP, which are the objects to be welded.

Here, when the height b of the protrusion 11 is made higher than the thickness of the two laminated polypropylene films PP which are the objects to be welded, the peripheral surface of the horn 20 is worn or damaged by the tip of the protrusion 11. As a result, there is a problem that long-term continuous operation is not possible.

However, in the ultrasonic roll seam device 100 of this embodiment, the height of the protrusion 11 formed on the peripheral surface of the anvil 10 is set to be slightly smaller than the thickness of the two laminated polypropylene films PP to be welded. Therefore, the risk of the peripheral surface of the horn 20 being worn or damaged by the tip of the protrusion 11 can be reduced as much as possible.

Further, in the ultrasonic roll seam device 100 of this embodiment, when the width in the lateral direction of the protrusion 11 formed on the peripheral surface of the anvil 10 is a and the height is b, the value of C = a / b. Is set to 1 to 10, preferably 2 to 6.

With this configuration, it is possible to reliably melt and join the welded object even with a light load and high-speed operation, and the ultrasonic roll seam device 100 can be continuously operated for a long period of time.

FIG. 3 is a cross-sectional view illustrating a protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG.

FIG. 3A shows a case where the protrusions 11a and 11b are formed on the peripheral surface of the anvil 10, and FIG. 3B shows the convex portions 12a and 12b formed on the peripheral surface of the anvil 10. Further, it shows a case where the protrusions 11a and 11b are formed on the upper surfaces of the protrusions 12a and 12b. In the case of FIG. 3A, the width a of the protrusions 11a and 11b in the lateral direction and the height b of the protrusions 11a and 11b from the peripheral surface of the anvil 10 are important, and FIG. 3B ), The width a of the protrusions 11a and 11b in the lateral direction and the height b of the protrusions 11a and 11b from above the protrusions 12a and 12b are important.

That is, in both the case of FIG. 3A and the case of FIG. 3B, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, light weighting and high speed operation However, reliable fusion bonding of the object to be welded becomes possible, and long-term continuous operation of the ultrasonic roll seam device 100 becomes possible.

In the examples shown in FIGS. 1 to 3, two rows of protrusions 11a and 11b are formed on the peripheral surface of the anvil 10, but one row or 3 is shown on the peripheral surface of the anvil 10. It may be configured to form protrusions of rows or more.

FIG. 4 is a partial perspective view (FIG. 4 (A)) and a cross-sectional view (FIG. 4) showing another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. 4 (B)).

In the ultrasonic roll seam device 100 shown in FIGS. 1 to 3, the protrusions 11a and 11b formed on the peripheral surface of the anvil 10 are formed linearly along the peripheral surface of the anvil 10 and have a cross section. Although it was formed in a rectangular shape, in the protrusions 110a and 110b shown in FIGS. 4A and 4B, one of the rising portions of the protrusions 110a and 110b is formed in a tapered shape. .. Other configurations are the same as those of the protrusions 11a and 11b shown in FIGS. 1 to 3.

Further, also in the protrusions 110a and 110b shown in FIGS. 4 (A) and 4 (B), the protrusions formed on the peripheral surface of the anvil 10 may be formed in one row or three or more rows. Further, the protrusions 110a and 110b may be formed on the protrusions formed on the peripheral surface of the anvil 10 as shown in FIG. 3B.

5 is a partial top view (FIG. 5 (A)) and a cross-sectional view (FIG. 5A) showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 5 (B).

As shown in FIGS. 5 (A) and 5 (B), the protrusions 120a and 120b shown in FIGS. 5 (A) and 5 (B) are curved in a wavy shape along the peripheral surface of the anvil 10. Is formed in two rows. Other configurations are the same as those of the protrusions 11a and 11b shown in FIGS. 1 to 3.

Therefore, the protrusions 120a and 120b shown in FIGS. 5 (A) and 5 (B) may also be configured to be formed in one row or three or more rows on the peripheral surface of the anvil 10. The portions 120a and 120b may be configured to be formed on the convex portions formed on the peripheral surface of the anvil 10 as shown in FIG. 3 (B).

Further, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation, and this ultrasonic roll seam device can be used. Enables long-term continuous operation.

FIG. 6 is a partial perspective view (FIG. 6 (A)) and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 6 (B).

In FIGS. 6 (A) and 6 (B), the protrusion 130 formed on the peripheral surface of the anvil 10 is the rectangular protrusion 130 shown in FIG. 6 (B) as shown in FIG. 6 (A). In addition, a large number of rows are formed in a flatfish pattern orthogonal to the peripheral surface of the anvil 10. In this configuration, the width a of the protrusion 130 in the lateral direction is as shown in FIG. 6 (B), and the height b of the protrusion 130 is the height from the peripheral surface of the anvil 10 (B). Will be shown in.

Also in the protrusion 130 shown in FIG. 6, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation. This enables long-term continuous operation of this ultrasonic roll seam device.

FIG. 7 is a partial top view (FIG. 7 (A)) and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 7 (B).

In FIG. 7, the protrusion 140 formed on the peripheral surface of the anvil 10 is such that the rectangular protrusion 140 shown in FIG. 7 (B) is inclined to the peripheral surface of the anvil 10 as shown in FIG. 7 (A). It is composed of a large number of rows formed in a flatfish pattern. Also in this configuration, the width a of the protrusion 140 in the lateral direction is as shown in FIG. 7 (B), and the height b of the protrusion 140 is the height from the peripheral surface of the anvil 10 (B). ) Will be shown.

Also in the protrusion 140 shown in FIG. 7, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation. This enables long-term continuous operation of this ultrasonic roll seam device.

FIG. 8 is a partial top view (FIG. 8 (A)) and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. FIG. 8 (B).

In FIG. 8, the protrusion 150 formed on the peripheral surface of the anvil 10 has the square trapezoidal protrusion 150 shown in FIG. 8 (B) on the peripheral surface of the anvil 10 as shown in FIG. 8 (A). It is composed of a large number of staggered arrangements along the line.

Also in this configuration, the width a of the protrusion 150 in the lateral direction is the length of one side of the upper surface of the square base as shown in FIG. 8 (B), and the height b of the protrusion 150 is from the peripheral surface of the anvil 10. The height of the square table is shown in FIG. 8 (B).

Also in the protrusion 150 shown in FIG. 8, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation. This enables long-term continuous operation of this ultrasonic roll seam device.

In FIG. 8, the protrusions 150 are arranged in two rows along the peripheral surface of the anvil 10, but may be arranged in one row or three or more rows.

FIG. 9 is a partial top view (FIG. 9 (A)) and a perspective view of a main part showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. It is a figure.

In FIG. 9, the protrusion 160 formed on the peripheral surface of the anvil 10 has the square trapezoidal protrusion 160 shown in FIG. 9B on the peripheral surface of the anvil 10 as shown in FIG. 9A. It is composed of a large number of alternating arrangements along the line.

Also in this configuration, the width a of the protrusion 160 in the lateral direction is the length of one side of the upper surface of the square base as shown in FIG. 9B, and the height b of the protrusion 160 is from the peripheral surface of the anvil 10. As shown in FIG. 9B, which is the height of the square table.

Also in the protrusion 160 shown in FIG. 9, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation. This enables long-term continuous operation of this ultrasonic roll seam device.

In FIG. 9, the protrusions 160 are arranged in three rows along the peripheral surface of the anvil 10, but may be arranged in one row or three or more rows.

10 is a partial top view (FIG. 10A) and a side view (FIG. 10A) showing still another example of the protrusion formed on the peripheral surface of the disk-shaped anvil of the ultrasonic roll seam device shown in FIG. 10 (B)), a cross-sectional view (FIG. 10 (C)), and a perspective view of a main part (FIG. 10 (D)).

In FIG. 10, the protrusion 170 formed on the peripheral surface of the anvil 10 has the square trapezoidal protrusion 170 shown in FIG. 10 (D) on the peripheral surface of the anvil 10 as shown in FIG. 10 (A). It is composed of many arrangements along the line.

Also in this configuration, the width a of the protrusion 170 in the lateral direction is the length of the side of the upper surface of the square base in the lateral direction as shown in FIG. 10 (B), and the height b of the protrusion 170 is the circumference of the anvil 10. As shown in FIG. 10B, which is the height of the square base from above the surface.

Also in the protrusion 170 shown in FIG. 10, by setting the value of C = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-bond the welded object even with a light load and high-speed operation. This enables long-term continuous operation of this ultrasonic roll seam device.

In FIG. 10, the protrusions 160 are arranged in three rows along the peripheral surface of the anvil 10, but may be arranged in one row or three or more rows.

FIG. 11 is a diagram illustrating an example of a contact sensor used in the ultrasonic roll seam device described with reference to FIGS. 1 to 10.

In the ultrasonic roll seam device 100 described with reference to FIGS. 1 to 10, when a protrusion is formed on the peripheral surface of the anvil 10 and the width of the protrusion in the lateral direction is a and the height is b, C. By setting the value of = a / b to 1 to 10, preferably 2 to 6, it is possible to reliably melt-join the welding target even with a light load and high-speed operation, and a configuration capable of long-term continuous operation. explained.

However, even in the ultrasonic roll seam device having the above configuration, the protrusion 11 of the disk-shaped anvil 10 is formed on the peripheral surface of the ultrasonic horn 20 during the ultrasonic fusion bonding process of the welded object or the adjustment of the ultrasonic roll seam device. In this case, the peripheral surface of the ultrasonic horn 20 may be worn or scratched, making it difficult to operate the ultrasonic roll seam device 100 continuously for a long period of time.

Therefore, in the ultrasonic roll seam device 100 of the present invention, a contact sensor 80 for electrically detecting the contact between the protrusion 11 of the anvil 10 and the horn 20 is provided, and when the protrusion 11 of the anvil 10 comes into contact with the horn 20, the contact sensor 80 is provided. For example, the operation of the ultrasonic roll seam device 100 is temporarily suspended.

That is, as shown in FIG. 11, each of the anvil 10 and the horn 10 is provided with an insulating member (not shown) that electrically insulates the anvil 10 and the horn 10 from a housing (not shown) of the ultrasonic roll seam device 100, and one end contacts the disk-shaped anvil 10. A contact detection electric circuit 70 is provided in which the other end contacts the disk-shaped ultrasonic horn 10. Then, the contact sensor 80 detects the current I flowing through the contact detection electric circuit 70 to detect the contact between the protrusion 11 of the anvil 10 and the horn 20.

That is, since the anvil 10 and the horn 10 are insulated by an insulating material (not shown), no current flows through the contact detection electric circuit 70 when the protrusion 11 of the anvil 10 is not in contact with the horn 10. However, when the protrusion 11 of the anvil 10 comes into contact with the horn 10, a current flows through the contact detection electric circuit 70, and the protrusion 11 of the anvil 10 comes into contact with the horn 20 by detecting this current with the contact sensor 80. Is detected.

Further, since the ultrasonic roll seam device 100 of the present invention is continuously operated for a long period of time, it is necessary to prevent the temperature of the anvil 10 from rising. Here, when the temperature of the anvil 10 becomes, for example, 100 degrees or more, proper joining cannot be performed due to thermal expansion of the anvil 10 or the like.

Therefore, in the ultrasonic roll seam device 100 of the present invention, bellows-like irregularities are formed on the side surface of the anvil 10 as shown in the cross-sectional view of FIG. 12 (A) and the side view of FIG. 12 (B). The unevenness promotes heat dissipation from the anvil 10, thereby suppressing the temperature rise of the anvil 10.

The present invention is not limited to the above-described embodiment, and many modifications can be made by ordinary creative abilities of those skilled in the art within the scope of the technical idea of the present invention.

10 ... Anvil 11 ... Protrusion
20 ... Horn 30 ... Motor 40 ... Ultrasonic oscillator 50 ... Inversion mechanism 60 ... Pressurizing device 70 ... Contact detection electric circuit 80 ... Contact sensor 100 ... Ultrasonic roll seam device

Claims (11)

It has a disk-shaped anvil that rotates in opposite directions and a disk-shaped ultrasonic horn that is arranged so as to face the peripheral surface of the disk-shaped anvil, and is located between the disk-shaped anvil and the disk-shaped ultrasonic horn. There is an ultrasonic roll seam device that welds the welded objects by sandwiching and transporting the two stacked objects to be welded.
Have protrusions provided on the circumferential surface of the disk-shaped anvil, said protrusions beyond the thickness of one of the welding object of said two welding object superimposed, and said heavy topping It has a height that is less than the thickness of the two welding objects, and when the width in the lateral direction is a and the height is b, the value of C = a / b is 1 to 10. and ultrasonic roll seam apparatus. The ultrasonic roll seam device according to claim 1 , wherein the protrusion is composed of at least one row of protrusions formed linearly along the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam device according to claim 1 , wherein the protrusion is composed of at least one row of protrusions formed by being curved in a wavy shape along the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam device according to claim 1 , wherein the protrusions are composed of a large number of protrusions formed in a staggered manner along the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam device according to claim 1 , wherein the protrusion is composed of a large number of flatfish-shaped protrusions formed orthogonally or inclined to the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam device according to claim 1 , wherein the protrusions are formed of twill-shaped protrusions on the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam device according to claim 1 , wherein the protrusion is formed by arranging a plurality of square trapezoidal protrusions in one or more rows on the peripheral surface of the disk-shaped anvil. The ultrasonic roll seam apparatus according to any one of claims 1 to 7, wherein the welding object is a sheet-shaped resin film laminated on two sheets. The ultrasonic roll seam device according to claim 8 , wherein the sheet-shaped resin film is a polypropylene film. The ultrasonic roll according to any one of claims 1 to 9, wherein a contact sensor for electrically detecting the contact between the protrusion of the disk-shaped anvil and the disk-shaped ultrasonic horn is provided. Seam device. The ultrasonic roll seam device according to any one of claims 1 to 10, wherein the disk-shaped anvil has a bellows-shaped cross section.

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