JP2003220648A - Ultrasonic sealing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide small-sized and lightweight ultrasonic sealing equipment which can surely weld a flange of the outer peripheral part of a package provided with a deep-bottomed vessel, or of a package provided with a vessel of which the lateral side is not tilted. <P>SOLUTION: A horn 10 having an ultrasonic vibrator 9 fixed thereto integrally is installed above an anvil 17, while the thickness of the anvil 17 is formed to be smaller than the maximum outside diameter part D of the ultrasonic vibrator 9. Consequently, the ultrasonic vibrator 9 having a large diameter is prevented from interfering with the lateral side 47a of the vessel 47, and the outer peripheral flange 49 of the package 47 can be surely welded. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved ultrasonic sealing device, and more particularly to an ultrasonic sealing device suitable for use as a surface to be welded such as a flange on the outer peripheral portion of a package including a lid and a container.

[0002]

2. Description of the Related Art An ultrasonic sealing device for sandwiching a sheet-shaped workpiece between a horn driven by an ultrasonic vibrator and an anvil to continuously perform welding work is disclosed in, for example, Japanese Patent Publication No. As disclosed in Japanese Patent No. 53332, feeding to a workpiece between an annular horn that rotates with its end face horizontal and a pressing roller (anvil) arranged above the horn and offset from the center of the horn. And an ultrasonic processing machine for performing ultrasonic welding while applying a coating, and Japanese Patent Laid-Open No. 2000-2468.
As disclosed in No. 17, a sheet-shaped workpiece between a tip surface of a substantially vertically installed cylindrical horn and a pressing roller (anvil) that rotates the end surface in a vertical plane above the horn. A continuous welding processing device or the like which holds an ultrasonic wave to carry out ultrasonic welding is already known.

[0003]

However, the ultrasonic processing machine disclosed in Japanese Patent Publication No. 62-533332 has a structure in which the workpiece is fed by utilizing the rotation of the edge of the end face of the annular horn. Therefore, since it is necessary to secure the feeding directionality and the feeding speed, the diameter of the annular horn must be increased, and there is a drawback in that the entire device becomes large.
Further, in order to vibrate a heavy horn, it is necessary to increase the size of the ultrasonic vibrator itself, which further increases the size of the entire device.

On the other hand, in the continuous welding apparatus disclosed in Japanese Patent Laid-Open No. 2000-246817, the size of the horn can be relatively small, but the feeding means for the work piece is independent of the pressing roller (anvil) and the horn. Since the size of the continuous welding processing apparatus tends to increase in the feed direction of the work piece, it is difficult to reduce the size of the apparatus.

Further, in the continuous welding processing apparatus of Japanese Unexamined Patent Publication No. 2000-246817, an ultrasonic transducer is integrally fixed to the base of a cylindrical horn, but it is necessary to vibrate the horn. Since the outer diameter of the sound wave transducer is considerably larger than the outer diameter of the horn, when the flange on the outer peripheral part of the package consisting of the lid and the container is the welding target surface,
In particular, when the bottom of the container is deep or when the side surface of the container is not inclined, the side surface of the container interferes with the large-diameter ultrasonic transducer located below the flange portion, There is a drawback that it is difficult to perform various welding operations.

Such a problem can be theoretically solved by increasing the length of the horn and offsetting the position of the ultrasonic transducer below the bottom of the container. Another problem will occur in terms of the decrease in rigidity due to the increase in the thickness and the increase in the size of the ultrasonic transducer due to the increase in the weight of the horn.

[0007]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned drawbacks of the prior art and to weld a flange on the outer peripheral portion of a package having a container with a deep bottom or a package in which the side surface of the container is not inclined. Even in such a case, it is an object of the present invention to provide a small and lightweight ultrasonic sealing device capable of reliably performing the welding work of the outer peripheral flange while keeping the container horizontally without tilting.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a horn connected to an ultrasonic transducer is ultrasonically vibrated, and is provided between the outer peripheral surface of a roller-shaped anvil facing the tip surface of the horn and the tip surface of the horn. An ultrasonic sealing device that holds a sheet-shaped work piece by welding to fix the work piece, in order to achieve the above object,
In particular, the ultrasonic transducer is integrally fixed to the base of the horn, the thickness of the anvil is made thinner than the maximum outer diameter portion of the ultrasonic transducer, and the horn is more than the anvil in the relative positional relationship between the horn and the anvil. Installed on the upper side, a rotary drive mechanism is attached to the anvil to feed the surface of the workpiece to be welded, and along the processing area formed between the tip surface of the horn and the outer peripheral surface of the anvil. An upper guide and a lower guide for guiding the surface of the workpiece to be welded are arranged on the upstream side in the feeding direction at least with respect to the installation positions of the horn and the anvil.

Since the horn is installed above the anvil in the relative positional relationship between the horn and the anvil, the flange on the outer peripheral portion of the package having a container with a deep bottom or a container not inclined on the side surface is welded. Even in such a case, there is no problem that the ultrasonic transducer having a large diameter integrally fixed to the base of the horn interferes with the side surface of the container. Further, since the thickness of the anvil is thinner than the maximum outer diameter portion of the ultrasonic transducer, more preferably, it is formed to be equal to or less than the outer diameter of the horn,
Even if the package has a deep-bottomed container or a container with no inclined side surface, the anvil does not interfere with the side surface of the container carelessly, and the flange on the outer peripheral part can be securely attached. The welding work can be performed by sandwiching the horn and the anvil. Further, since the mechanism for feeding the work piece is composed of a roller-shaped anvil that holds the work piece together with the horn and its rotation drive mechanism, the work piece is fed and welded at the same time. It is possible to reduce the size of the device particularly in the feeding direction of the workpiece, as compared with the case where a roller other than the anvil is provided side by side to form an independent feeding mechanism. Furthermore, it is not necessary to increase the length of the horn in order to avoid interference between the ultrasonic vibrator and a container with a deep bottom or a container with no slope on the side, so it is possible to reduce the size of the horn and ultrasonic vibrator. It is possible to reduce the size and weight of the device, including downsizing and lowering the output. Moreover, since the horn is made smaller and lighter, it is possible to harmonize the oscillation frequency of the ultrasonic vibrator, and it is possible to easily cope with the welding of thin objects. (Conventional 15 kHz
Where the limit was about 30 kHz, it can be tuned to about 60 kHz. ) In addition, the upper guide and the lower guide that guide the surface to be welded of the workpiece along the processing area formed between the tip surface of the horn and the outer peripheral surface of the anvil are based on at least the installation positions of the horn and the anvil. Since it is arranged on the upstream side in the feeding direction, it is possible to easily guide the welding target surface of the workpiece between the tip surface of the horn and the outer peripheral surface of the anvil, and start the welding work. .

Further, in the above-mentioned configuration, the upper guide and the lower guide may be provided by sandwiching the installation positions of the horn and the anvil from the upstream side to the downstream side in the feeding direction. In that case, a hole is bored in the lower guide so that the upper end of the outer peripheral surface of the anvil protrudes above the upper surface of the lower guide. Further, a hole for inserting the tip of the horn is bored in the upper guide, and the position of the horn is determined so that the tip surface of the horn is located above the lower surface of the upper guide.

In this way, by positioning the tip surface of the horn above the lower surface of the upper guide, the tip of the work piece that is sandwiched between the upper guide and the lower guide and guided to the processing area is the horn. Strong interference with the front end surface of the workpiece is prevented, and jamming of the workpiece, which may occur at the start stage of the welding work, is prevented. Since the surface of the workpiece to be welded is pushed into the hole of the upper guide by the anvil protruding above the upper surface of the lower guide, the tip surface of the horn located above the lower surface of the upper guide and the anvil are It is possible to hold the work piece in between and perform welding work.

Further, in addition to the above-mentioned upper guide and lower guide, a side guide for guiding the edge of the surface to be welded may be provided in parallel with the surface parallel to the rotating surface of the anvil.

By performing the welding work while pressing the edge of the welding target surface sandwiched between the upper guide and the lower guide against the side guide, the meandering of the welding target in the horizontal plane is prevented, Appropriate welding work can be performed at an offset position that is always a constant distance from the edge of the surface to be welded.

The side guides may be further provided with welding path offset amount adjusting means for adjusting the distance between the side guides and the horn and the anvil.

By adjusting the distance between the side guides and the horn and the anvil, it is possible to select an offset position at an arbitrary distance from the edge of the surface to be welded and perform appropriate welding work.

Further, the above-mentioned horn can be provided with a gap adjusting means for adjusting the distance between the tip surface of the horn and the outer peripheral surface of the anvil.

By adjusting the distance between the tip surface of the horn and the outer peripheral surface of the anvil, it is possible to carry out the optimum welding work in accordance with the thickness of the workpiece.

Further, in any of the above-mentioned constitutions, the detection means for detecting the workpiece is provided upstream of the installation direction of the horn and the anvil in the feeding direction, and the operation of this detection means is detected. It is desirable to provide automatic control means for driving the ultrasonic transducer and the rotary drive mechanism until the predetermined conditions are satisfied.

As described above, the work piece is guided between the upper guide and the lower guide along the feed direction to the working area between the tip surface of the horn and the outer peripheral surface of the anvil. Therefore, the detection means is provided on the upstream side in the feeding direction based on the installation positions of the horn and the anvil, and when the detection means operates, the automatic control of the ultrasonic transducer and the rotation drive mechanism is started by the automatic control means. As a result, automatic operation that does not require button operation by the operator is achieved, and continuous welding work for a large number of workpieces can be performed more smoothly. As the condition for stopping the operation of the ultrasonic transducer and the rotary drive mechanism, the elapsed time from the start of the operation of the detecting means, the number of rotations of the anvil or the rotary drive mechanism, or the like can be used. Further, another detecting means is provided on the downstream side in the feeding direction based on the installation positions of the horn and the anvil, and the change from the on state to the off state (passage of the work piece) of the other detecting means is detected to detect ultrasonic vibration. The child and the rotary drive mechanism may be stopped.

Further, the automatic control means described above re-detects the operating state of the detection means when the above-mentioned conditions are satisfied,
When the detection means is detecting the workpiece, it is possible to provide a failure recovery function that reversely drives the rotary drive mechanism until a predetermined condition is satisfied.

If such a construction is applied, it is possible to automatically retract the workpiece when jamming occurs and the feeding of the workpiece is stopped, and to eliminate jamming. The property is further improved. As the condition for stopping the reverse rotation drive of the rotary drive mechanism, the elapsed time from the start of the reverse rotation operation, the number of rotations of the anvil or the rotary drive mechanism, or the like can be used as described above.

[0022]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view showing a cross section of a main part of an ultrasonic sealing device 1 of an embodiment to which the present invention is applied, FIG. 2 is a right side view with reference to FIG. 1, and FIG. FIG.

As shown in FIG. 1, the ultrasonic sealing device 1 includes a main body 2 and a front panel 2 of the main body 2.
a processing unit 3 installed substantially in the center of a and a feed unit 4 installed below the processing unit 3 on the front panel 2a. Inside the main body 2, an ultrasonic sealing device is provided. The control means required for the drive control of No. 1 and the ultrasonic drive circuit are installed.

Among these, on the bottom surface 5a of the casing 5 in the processing unit 3, as shown in FIG. 1, a leaf spring member 7 whose right end is fixed to the bottom surface 5a with a rivet 6 is a fulcrum at the position of the rivet 6. Is laid horizontally so that it can swing. An ultrasonic transducer 9 is fixed to a hole formed in the central portion of the leaf spring member 7 in the longitudinal direction via a rubber bush 8 for absorbing vibration. The base of the substantially cylindrical horn 10 is integrally fixed. Further, holes corresponding to the positions where the ultrasonic transducers 9 are disposed are formed in the bottom surface 5a of the casing 5, and as shown in FIG. 1, a part of the ultrasonic transducers 9 and the horn are provided through these holes. 10 projects below the casing 5.

At a lower position on the wall surface 5b forming the left end surface of the casing 5, a gap adjusting screw 11 penetrating the wall surface 5b and protruding into the casing 5 is rotatable and axially movable. The tip of the gap adjusting screw 11 that is fixedly mounted and protrudes into the casing 5 is slidably mounted on the bottom surface 5a of the casing 5 and the left end portion of the leaf spring member 7 is supported by the tapered slope. It is screwed with the adjusting piece 12.

Further, the L-shaped support fitting 13 fixed to the rear surface of the wall surface 5c forming the front surface of the casing 5 has a guide rod 1 which vertically penetrates the left end portion of the leaf spring member 7.
4, the upper end of which is fixed, and the coil spring 15 whose both ends are supported by the L-shaped support fitting 13 and the left end of the leaf spring member 7.
Thus, the leaf spring member 7 is urged to swing counterclockwise in FIG. 1 with the position of the rivet 6 as a fulcrum.

The hole formed in the left end portion of the leaf spring member 7 for passing the lower end of the guide rod 14 is merely for positioning the lower end portion of the guide rod 14, and the fitting with the guide rod 14 is not necessary. Since it is in the loose fitting state, the guide rod 14 does not hinder the swing of the leaf spring member 7.

Further, a notch for avoiding interference with the guide rod 14 is provided at the right end portion of the height adjusting piece 12 which is movable in a direction to come in contact with and separate from the guide rod 14 by rotating the gap adjusting screw 11. It is formed in a substantially U shape so that the presence of the guide rod 14 does not hinder the movement of the height adjusting piece 12.

In the case where the leaf spring member 7 itself has a large elastic restoring force, and the leaf spring member 7 can be strongly urged to oscillate counterclockwise in FIG. 1 with the position of the rivet 6 as a fulcrum only by the elastic force. It is not always necessary to provide the L-shaped support fitting 13, the guide rod 14, and the coil spring 15. The coil spring 15 is an auxiliary biasing means.

On the other hand, inside the casing 16 of the feed unit 4, a roller-shaped anvil 17 is rotatably mounted so that the outer peripheral surface of the horn 10 disposed on the side of the processing unit 3 located above faces the outer peripheral surface. Has been.
That is, in the relative positional relationship between the horn 10 and the anvil 17, the horn 10 is installed above the anvil 17.

The anvil 17 is, as shown in FIG.
The main body 2 is mounted on a rotary output shaft 19 protruding through the front panel 2a from a motor 18 with a speed reducer, which is fixedly provided on the rear surface side of the front panel 2a, and rotates integrally with the rotary output shaft 19. It is supposed to do. The outer periphery of the tip of the rotary output shaft 19 is partially flattened, and the roller-shaped anvil 17 is fitted in the non-rotatable state to the modified tip of the rotary output shaft 19. Further, as shown in FIG. 1, the set screw 20 is screwed into the female screw portion formed at the tip of the rotation output shaft 19 penetrating the rotation center of the anvil 17 to prevent the anvil 17 from falling off. . The motor 18 with a reducer functions as a rotary drive mechanism for the anvil 17.

In this embodiment, a plurality of anvils 17 having different outer peripheral surfaces are prepared in advance, and one of the anvils 17 is selected from the anvils 17 according to the welding work, and the tip of the rotary output shaft 19 is selected. It can be attached to. The thickness of the roller-shaped anvil 17 is equal to that of the ultrasonic transducer 9
It is necessary to make the diameter smaller than the maximum outer diameter D of the horn 1. More preferably, the thickness of the anvil 17 is
It is equal to or less than the outer diameter d of 0.

Further, above the casing 16 in the feed unit 4, the surface to be welded of the workpiece is provided along the processing region formed between the tip surface of the horn 10 and the outer peripheral surface of the roller-shaped anvil 17. Lower guide 21 for guiding
Is fixedly provided on the front panel 2a side of the main body portion 2 by hanging from the upstream side to the downstream side in the feeding direction with the installation position of the horn 10 and the anvil 17 sandwiched therebetween. Similarly, in the lower portion, an upper guide 22 for guiding the surface to be welded of the workpiece along a processing region formed between the tip surface of the horn 10 and the outer peripheral surface of the roller-shaped anvil 17 is provided. It is provided so as to extend from the upstream side to the downstream side in the feeding direction with the installation position of 10 and the anvil 17 sandwiched therebetween, and fixed to the bottom surface 5a of the casing 5.

FIG. 4 is an enlarged view of the horn 10, the anvil 17, the upper guide 22 and the lower guide 21 in the vicinity of a processing region formed between the tip surface of the horn 10 and the outer peripheral surface of the roller-shaped anvil 17. It is sectional drawing which showed the relative positional relationship.

As shown in FIG. 4, the processing area referred to here means a flat and substantially horizontal minute plane formed between the tip surface of the horn 10 and the outer peripheral surface of the roller-shaped anvil 17. Then, the upper guide 22 and the lower guide 21 are
Substantially, it is arranged above and below so as to sandwich this processing region. Strictly speaking, the upper end portion of the outer peripheral surface of the anvil 17 penetrates a rectangular hole 23 formed in the lower guide 21 and projects slightly above the upper surface of the lower guide 21, and The tip of the horn 10 projects into a rectangular hole 24 formed in the upper guide 22, and the position of the tip surface thereof is restricted to a position above the lower surface of the upper guide 22.

By rotating the gap adjusting screw 11 to feed the height adjusting piece 12 and moving the height adjusting piece 12 in the direction of approaching the guide rod 14, the plate spring member 7 having the ultrasonic transducer 9 fixed thereto is moved. Since the left end portion is lifted upward along the tapered slope of the height adjusting piece 12 against the elastic restoring force of the leaf spring member 7 itself and the biasing force of the coil spring 15, it is integrated with the ultrasonic transducer 9. Fine adjustment is possible in the direction of retracting the tip end surface of the horn 10 upward. Further, if the gap adjusting screw 11 is rotated in the opposite direction to move the height adjusting piece 12 in a direction away from the guide rod 14, the leaf spring member 7 having the ultrasonic transducer 9 fixed thereto is moved. The left end portion is pushed down by the elastic restoring force of the leaf spring member 7 itself and the biasing force of the coil spring 15 along the tapered slope of the height adjusting piece 12 by the amount of decrease in the thickness of the slope, so that ultrasonic vibration is generated. Fine adjustment is possible in the direction in which the tip surface of the horn 10 integrated with the child 9 is projected downward. When the height adjusting piece 12 is separated from the guide rod 14 to the maximum extent, the horn 10
It is desirable that the tip surface of the above is flush with the lower surface of the upper guide 22.

Depending on the type and thickness of the workpiece to be welded, the amount of protrusion of the workpiece pushed into the hole 24 of the upper guide 22 by the outer peripheral surface of the anvil 17 varies. The horn 10 for the hole 24 as described above.
By adjusting the amount of plunge (removal amount in some cases) of the tip surface of the, it is possible to realize the optimum welding work according to the type and thickness of the workpiece to be welded.

The leaf spring member 7, the height adjusting piece 12, and the gap adjusting screw 11 involved in this adjusting work are gap adjusting means for adjusting the distance between the tip surface of the horn 10 and the outer peripheral surface of the anvil 17.

The horn 10 is always urged toward the anvil 17 by the elastic force of the leaf spring member 7 and the urging force of the coil spring 15 while the lowering limit is regulated by the height adjusting piece 12, so that the horn 10 is always urged. It is possible to carry out the welding work by holding the work piece with a constant force, and even if the total thickness slightly fluctuates due to the intrusion of foreign matter between the surfaces to be welded that have been polymerized, Due to the retracting operation of the horn 10 due to the increase in thickness, the welding work can be substantially continued without any trouble.

Further, in the present embodiment, as shown in FIG. 1, loosening the screw 26 loosely fitted in the elongated hole 25 provided in the mounting piece 5d integrally formed with the casing 5 of the processing unit 3 is performed. The front panel 2a of the main body 2
The entire processing unit 3 can be moved in the vertical direction within a certain range. this is,
This is a function for adjusting the separation distance between the upper guide 22 and the lower guide 21 by coping with a marked difference in the thickness of the workpiece to be welded. When this function is used, the distance between the tip surface of the horn 10 and the outer peripheral surface of the anvil 17 also changes as a result. Therefore, in a broader sense, the slot 25 and the screw 26 of the mounting piece 5d are also a kind of gap adjusting means.

The upper guide 22 is further provided with a rectangular hole 27 on the upstream side (the right side in FIG. 1) in the feed direction based on the installation positions of the horn 10 and the anvil 17, and the bottom surface 5a of the casing 5 is formed. Limit switch 28 fixed to
Lead 29 penetrates through the hole 27 and projects to the upper surface position of the lower guide 21. Since a shallow groove (not shown) is formed on the upper surface of the lower guide 21 that comes into contact with the tip of the lead 29, and the tip of the lead 29 slightly protrudes into this groove, the installation position of the horn 10 and the anvil 17 can be adjusted. The upper guide 22 and the lower guide 2 at the reference upstream position.
If the workpiece is inserted between the limit switch 28 and 1, the lead 29 can be sufficiently swung to cause the limit switch 28 to react no matter how thin the surface to be welded is. Further, even when the vertical position of the processing unit 3 is adjusted as described above, the limit switch 28 can be correctly operated by absorbing the variation in the separation distance between the upper guide 22 and the lower guide 21. The limit switch 28 is a detection unit that detects the presence of the surface to be welded of the workpiece with the lead 29 being pressed.

On the other hand, on the front panel 2a of the main body 2,
As shown in FIG. 1, the upper guide 22 and the lower guide 21.
A rectangular opening 31 is formed corresponding to the mounting position of the front panel 2 so as to overlap the opening 31.
A side guide mounting member 32 is fixedly provided on the back surface side of a. The side guide mounting member 32 is a plate-like body having arcuate cutouts for avoiding interference with the speed reducer motor 18, and as shown in FIG. It is attached to the back side of the front panel 2a in such a manner as to be slightly retracted rearward from the front panel 2a via the attachment piece.

As shown in FIG. 1, the side guide 30 mounted on the side guide mounting member 32 has a rectangular shape extending from the upstream side to the downstream side in the feeding direction with the installation position of the horn 10 and the anvil 17 interposed therebetween. It is a plate. Side guide 3
No. 0 has coil springs 34 attached to the long offset amount adjusting screws 33 loosely fitted in the holes formed at the four corners thereof as shown in FIG.
By screwing the tips of the offset amount adjusting screws 33 into the female screw parts tapped at the four corners of the front panel 2a.
It is fixed parallel to the, and more specifically parallel to the plane of rotation of the anvil 17.

Side guides 3 based on the front panel 2a
The protrusion amount of 0, in other words, the separation distance between the side guide 30 and the horn 10 and the anvil 17 based on the direction of the normal line of the front panel 2a causes the four offset amount adjusting screws 33 to rotate by the same amount. It can be adjusted arbitrarily.

The side guide mounting member 32 is the front panel 2a.
Since it is installed at a position away from the rear of the coil spring, even if the offset amount adjusting screw 33 is rotated to move the side guide 30 to be flush with the front panel 2a. There is no problem in that the bottom end 34 of the side guide 34 impedes the movement of the side guide 30.

The side guide 30 is a guide for guiding the edge of the surface to be welded on a surface parallel to the rotation surface of the anvil 17 along the feed direction of the workpiece, and the offset amount adjusting screw 33 and the coil spring 34 are Horn 10 and anvil 1
7 is a welding path offset amount adjusting means for adjusting the distance between the side guide 30 and the side guide 30.

On the front panel 2a of the main body 2, a pilot lamp 35 showing that the ultrasonic drive circuit is operating.
3, and a power switch 36 and an output adjusting volume 37 are provided on the upper surface of the main body 2, as shown in FIG.

FIG. 5 shows the control means 38 incorporated in the main body 2.
3 is a functional block diagram showing an outline of the configuration of FIG.

The control means 38 is a CPU for arithmetic processing.
39, a ROM 40 in which a control program is stored, and a RAM 41 for temporarily storing data in a calculation process
Equipped with. The limit switch 28 and the output adjusting volume 37 are connected to the input circuit 42 of the CPU 39, and the output circuit 43 includes a motor control circuit 44 for driving and controlling the motor 18 with a speed reducer and the ultrasonic transducer 9. An ultrasonic drive circuit 45 for controlling the vibration of the is connected.

Next, referring to the flowchart of FIG. 6, a CPU that functions as an automatic control means of the ultrasonic sealing device 1.
The processing operation of 39 will be described.

When the power switch 36 is operated to turn on the power, the CPU 39 first causes the limit switch 28
Whether or not the signal from the horn 10 is detected, that is, the horn 10
It is determined whether or not the welding target surface of the workpiece is inserted between the lower guide 21 and the upper guide 22 at a position on the upstream side in the feeding direction close to the installation position of the anvil 17 (step a1). .

Then, if the insertion of the surface to be welded of the workpiece is not detected, the CPU 39 repeats only the determination processing of step a1 in the same manner as described above, while the lower guide 21 and the upper guide 22 are being operated. Wait for the surface of the workpiece to be welded to be inserted.

The operator who performs the welding operation picks up the workpiece during this period, and the surface to be welded, for example, the package 48 consisting of the lid 46 and the container 47 as shown in FIG.
With the flange 49 on the outer periphery of the horn 1 as the surface to be welded,
0 and a position upstream of the installation position of the anvil 17 are inserted between the lower guide 21 and the upper guide 22.

As described above, at this stage, the distance between the lower guide 21 and the upper guide 22 is adjusted to cope with the thickness of the flange 49, and the horn 10 is adjusted according to the type and thickness of the workpiece. It is possible to adjust the position of the front end surface of the sheet and set the offset amount from the edge of the flange 49 to the welding path.

The flange 49 inserted between the lower guide 21 and the upper guide 22 is sandwiched between the lower guide 21 and the upper guide 22 so that the flange 49 is positioned exactly on the same plane as the above-mentioned processing area. By pressing the edge of the flange 49 against the side guide 30, the offset amount from the edge of the flange 49 to the welding path is set accurately.

Next, when the operator holding the package 48 slides the flange 49 against the side guide 30 and slides it to the downstream side in the feeding direction,
The tip of the flange 49 is the lead 2 of the limit switch 28.
The lead 29 is pushed up when hitting 9, and the limit switch 28 is switched from the off state to the on state. Then, the tip end of the flange 49 moves further downstream beyond the position where the lead 29 is arranged, and the tip end of the flange 49 plunges into the machining area between the horn 10 and the anvil 17. Since the tip surface of the horn 10 is retracted above the lower surface of the upper guide 22, there is almost no problem that the tip of the flange 49 is caught by the horn 10 and jammed.

The CPU 39, which has detected the changeover of the limit switch 28 in the judgment processing of step a1, sets the operation allowable time of the ultrasonic drive circuit 45 and the motor control circuit 44 in the timer T to start the time counting operation (step a2). , Step a3), the operation command according to the setting status of the output adjustment volume 37 is output to the ultrasonic drive circuit 45 to start the vibration of the ultrasonic transducer 9 and the horn 10 (step a4), and at the same time, the motor control circuit A forward rotation command is output to 44 to start the forward rotation operation of the anvil 17 attached to the motor with speed reducer 18 (step a5).

Then, the operating states of the ultrasonic drive circuit 45 and the motor with reduction gear 18 are maintained until a predetermined condition is satisfied, that is, until the operation allowable time set in the timer T elapses.

As a result, the flange 49 having the tip projecting into the processing area is automatically fed by the forward movement of the anvil 17, and the movement from right to left in FIG. 1 is started. Also, during this period, the flange 4 which is the surface to be welded
9 is ultrasonically welded to the outer peripheral portion of the lid 46 and the container 47.
The portion of the flange 49 in which the outer peripheral portion of the is overlapped is welded.

At this time, the horn 10 is urged toward the anvil 17 by the elastic force of the leaf spring member 7 and the urging force of the coil spring 15 with the lowering limit being restricted by the height adjusting piece 12. Therefore, it is possible to carry out an appropriate welding work while always holding the work piece with a constant force and without cutting through the flange 49. Further, depending on the case, there is a possibility that foreign matter may enter the portion of the flange 49 where the outer peripheral portions of the lid 46 and the container 47 are superposed and the thickness of the surface to be welded may change, but in such a case, Since the horn 10 retreats upward in accordance with the increase in the thickness, the gripping force can be slightly changed, but the substantial welding work can be continued without any trouble.

The allowable operating time set in the timer T is the time required from the tip of the flange 49 pushing up the lead 29 to the rear end of the flange 49 leaving the machining area by automatic feeding by the forward movement of the anvil 17. Is. Since this required time differs depending on the size of the package 48, specifically, the length of the flange 49, the ultrasonic drive circuit 4
5 or the motor 18 with reduction gear, when it is necessary to consider waste of electric power consumption due to excessive operation, the front panel 2
It is advisable to arrange a dip switch or the like on a to adjust the operating time of the timer. In this case, the set value of the DIP switch or the like is read in the processing of step a2.

When it is detected in step a6 that the operation permissible time set in the timer T has elapsed, the CPU 39 outputs an operation stop command to the ultrasonic wave drive circuit 45 to output the ultrasonic wave vibrator. 9 and the horn 10 are stopped to vibrate (step a7), and an operation stop command is output to the motor control circuit 44 to output the motor 18 with reduction gear.
Is stopped (step a8), and the initial standby state of waiting for another welding target surface of the workpiece to be inserted between the lower guide 21 and the upper guide 22 is restored (step a1). ).

The timing chart of FIG. 7 shows the time-series operation of the limit switch 28, the timer T, the motor control circuit 44, and the ultrasonic drive circuit 45 in the above process.

In this embodiment, the ultrasonic drive circuit 4 is based on the elapsed time from the start of the operation of the microswitch 28.
5 and the operation of the motor with speed reducer 18 are regulated, but if the increase in manufacturing cost due to the addition of a pulse coder (incremental encoder) or the like is acceptable,
Anvil 1 from the start of the operation of the microswitch 28
7 or the number of rotations of the motor 18 with reduction gear
It is also possible to regulate the operation of the motor 5 and the motor with reduction gear 18.

Further, another limit switch is provided on the downstream side in the feeding direction with reference to the installation positions of the horn 10 and the anvil 17, and the change from ON to OFF (passage of the workpiece) of the other limit switch is detected. And ultrasonic drive circuit 4
5 and the motor with reduction gear 18 may be stopped.

Next, the processing operation of the CPU 39 when the automatic control means of the ultrasonic sealing device 1 is provided with the failure recovery function will be described with reference to the flowchart of FIG.

However, the processing of steps b1 to b6 is the same as the processing of steps a1 to a6 described with reference to FIG. 6, and therefore the description thereof is omitted here.

In this embodiment, the CPU 39, which has confirmed the elapse of the operation allowable time in the process of step b6, outputs an operation stop command to the ultrasonic drive circuit 45 to stop the vibration of the ultrasonic vibrator 9 and the horn 10. After (step b
7) Then, the operating state of the limit switch 28 is detected again (step b8).

As described above, the operation allowable time set in the timer T is the time required from the tip of the flange 49 pushing up the lead 29 to the rear end of the flange 49 leaving the machining area by automatic feeding by the anvil 17. Therefore, if the feeding of the flange 49 by the anvil 17 is properly performed, the limit switch 28 should be inactive at that time.
If is kept on, it means that jamming has occurred for some reason and the feeding of the workpiece is stopped.

Therefore, when the determination result of step b8 is YES and proper feeding is confirmed, the CPU 39
Similarly to the above, after the operation stop command is output to the motor control circuit 44 to stop the operation of the motor with speed reducer 18 (step b13), another cover is again provided between the lower guide 21 and the upper guide 22. The process returns to the initial standby state of waiting for the welding target surface of the workpiece to be inserted (step b1).

On the other hand, when the judgment result in step b8 is NO and it is confirmed that jamming has occurred, the CPU 39 as the failure recovery function realizing means causes the motor control circuit 4 to operate.
4, the reverse rotation operation allowable time is reset to the timer T to start the time counting operation again (steps b9 and b10), the reverse rotation command is output to the motor control circuit 44, and the anvil 17 attached to the speed reducer motor 18 is output. The reverse rotation operation is started (step b11), and the operating state of the motor with reduction gear 18 is maintained until a predetermined condition is satisfied, that is, until the reverse rotation allowable time set in the timer T elapses.

As a result, the flange 49 sandwiched between the horn 10 and the anvil 17 is fed in the reverse direction by the reverse movement of the anvil 17, and the tip of the flange 49 is automatically moved to the position where it is removed from the machining area. Sent back to.

The reverse rotation allowable time set in the timer T is
The value may be approximately the same as the above-mentioned operation allowable time.

When it is detected by the determination processing in step b12 that the reverse rotation operation allowable time set in the timer T has elapsed, the CPU 39 causes the motor control circuit 44 to operate.
After the operation stop command is output to stop the operation of the motor with reduction gear 18 (step b13), the initial standby state is restored again (step b1).

The timing chart of FIG. 9 shows the time-series operation of the limit switch 28, the timer T, the motor control circuit 44, and the ultrasonic drive circuit 45 in the above process.

In this embodiment, the reverse rotation operation time of the motor 18 with reduction gear is regulated based on the time elapsed from the start of the reverse rotation operation. However, like the above, the reverse rotation of the anvil 17 and the motor 18 with reduction gear is reversed. Motor 18 with speed reducer
It is also possible to regulate the operation of the.

In this embodiment, the failure recovery attempt by the reverse movement of the anvil 17 is completed only once. However, this failure recovery operation is repeatedly executed until the limit switch 28 is turned off. It can also be configured as follows.

Next, with reference to FIG. 10, a processing operation in the case where the failure recovery operation is repeatedly executed until the limit switch 28 is turned off will be described with reference to FIG.

However, the processing of steps c1 to c8 is the same as the processing of steps b1 to b8 described with reference to FIG. 8, and therefore the description thereof is omitted here.

In this embodiment, when the operation state of the limit switch 28 is detected and the occurrence of jamming is confirmed in the process of step c8, the CPU 39 as the fault recovery function realizing means first retries the initial value 0. The value of the counter C is incremented by 1 (step c9),
It is opposed whether or not the value of the counter C exceeds the preset allowable number n of failure recovery operations (step c1).
0).

If the value of the counter C does not exceed the allowable number n of failure recovery operations, the CPU 39 as the failure recovery function implementing means timers the reverse operation allowable time of the motor control circuit 44 in the same manner as described above. It is reset to T and the timing operation is started again (step c11, step c1).
2) A reverse rotation command is output to the motor control circuit 44 to start the reverse rotation operation of the anvil 17 mounted on the motor 18 with a reducer (step c13), until a predetermined condition is satisfied, that is, the timer T. The operation state of the motor with speed reducer 18 is maintained until the reverse rotation operation allowance time set in step 4 is passed, and the flange 49 is fed in the reverse direction by the reverse motion of the anvil 17 (step c14) to drive the motor with speed reducer 18 Is stopped (step c15).

However, there is no guarantee that the flange 49 will be returned to the position where it is removed from the working area by such one failure recovery operation.

Therefore, in the present embodiment, after completion of one failure recovery operation in the process of step c15, the CP
U39 returns to the determination processing of step c8 again, and again confirms the operating state of the limit switch 28. If the limit switch 28 is not off,
The CPU 39 as the failure recovery function realizing means repeatedly executes the processing of step c9 to step c15 in the same manner as described above, and tries the backward feeding of the flange 49, that is, the jamming recovery work again.

This failure recovery work can be repeated a maximum of n times, and if the backward feeding of the flange 49 succeeds during this period and the determination result of step c8 is YES, the CPU 39 causes the retry counter to operate. It is determined whether or not the value of C is 0, that is, whether or not the failure recovery operation is executed once or more (step c16). When the value of the retry counter C is 0 and the failure recovery operation is not executed even once in the determination processing of step c16, the CPU 39 determines that the speed reducer with the reduction gear started in the processing of step c5. After the normal rotation operation of the motor 18 is stopped (step c17), the initial standby state is restored again (step c1).

In this case, since jamming has not occurred, it is possible to continue the welding process of the next package.

On the other hand, if the decision result in step c16 is NO and it is confirmed that the failure recovery work has been executed one or more times, the CPU 39 initializes the value of the retry counter C to 0 (step c18), Again, it returns to the initial standby state (step c1). When the failure recovery work is executed one or more times, the reverse rotation operation of the motor 18 with a speed reducer has already been stopped in the process of step c15 in the last executed failure recovery work.
It is not necessary to output the stop command for 8.

In this case, since the jamming failure is automatically restored, it is possible to continue the welding process for the next package.

If the judgment result in step c10 is YES while repeating the failure recovery work, the flange 4 is not removed even if the failure recovery work is repeated n times.
9 was not sent back properly. In this case, it means that failure recovery by automatic processing is difficult, so the CPU 39 forcibly blinks the pilot lamp 35 to notify the operator of the occurrence of an abnormality (step c19), and then, similarly to the above. The value of the retry counter C is initialized to 0 (step c18), and the initial standby state is restored again (step c1).

In this case, it is necessary to manually perform the fault recovery and then start the welding process for the next package.

The overall operation has been described above by taking the case where the welding work is performed with the flange 49 obtained by superimposing the outer peripheral portion of the lid 46 and the container 47 as the welding target surface. However, the ultrasonic sealing device 1 is not limited to this. In addition, it can be appropriately used for welding the end of a vinyl bag, welding a non-stretched polyethylene net with a polyethylene film-laminated paper, and welding a ribbon of synthetic fiber.

Next, some of the forms of the anvil 17 that can be used in each of the above-described embodiments are listed in FIG. 11, and the difference in action and effect between the forms will be briefly described.

First, the anvil 1 shown in FIG. 11 (a).
Reference numeral 7 has a protrusion having a shape similar to that of a spur gear module on the outer peripheral surface. When welding work is performed using the anvil 17, a dotted line welding locus is formed on the surface to be welded. . It is characterized by high welding strength and that it can be peeled off neatly without tearing when the welded portion is peeled off.

The anvil 17 shown in FIG. 11 (b) is
The area of the welded part is reduced by narrowing the width of the protrusions. Since the strength of the weld is lower than that of FIG. 11 (a), it is assumed that the welded part is peeled off cleanly. Suitable for

The anvil 17 shown in FIG. 11 (c) is
The X-shaped projections are continuously formed at a constant pitch in the circumferential direction of the outer peripheral surface, and are characterized in that the strength of the welded portion can be increased when the package material is A-PET or the like.

The anvil 17 shown in FIG. 11 (d) is
It is composed of the anvil body 17a and the cutter 17b, and the total thickness of the anvil body 17a and the cutter 17b is equal to the thickness of the anvil 17 shown in FIGS. 11 (a) to 11 (c). . Therefore, the outer peripheral surface of the anvil body 17a and the cutting edge formed on the outer periphery of the cutter 17b can be simultaneously positioned within the projected area of the tip surface of the horn 10, and the anvil body 17a and the tip surface of the horn 10 can be There is a feature that the welding work by the cutting and the fusing work by the outer periphery of the cutter 17b and the tip surface of the horn 10 can be performed in parallel.
Normally, the anvil 17 is attached to the rotary output shaft 19 with the anvil body 17a facing forward, and is used when the cutter 17b melts and removes an excessive protrusion of the flange 49 of the package 48. In the case where a plurality of synthetic fibers or the like are polymerized to form a decorative ribbon or the like, the cutter 17b may be attached to the rotary output shaft 19 in front. In this case, a tape-shaped material having a narrow width can be sequentially cut out from the end of a large-area material, and at the same time, the cut-out tape-shaped material can be welded to form a ribbon. The width of the ribbon is adjusted by the above-mentioned welding path offset amount adjusting means to the side guide 3
It can be set appropriately by adjusting the protrusion amount of 0.

FIG. 12 is a conceptual diagram showing the relative positional relationship among the ultrasonic transducer 9 and the horn 10, the roller-shaped anvil 17 and the package 48 during the welding work.

As shown in FIG. 12, the maximum outer diameter D of the ultrasonic transducer 9 is considerably larger than the outer diameter d of the horn 10. However, in each of the above-described embodiments, the horn 10 is Since the horn 10 is installed above the anvil 17 in the relative positional relationship with the anvil 17, the side wall 47a has a small inclination and the bottom of the container 47 is deep.
Even if the welding work is performed on the outer peripheral flange 49 of the package 48 including the side surface 4 of the package 48,
By bringing 7a close to the end surface of the anvil 17, the flange 49 can be reliably thrust into the processing area formed between the tip surface of the horn 10 and the outer peripheral surface of the anvil 17.

Therefore, the work of welding the package 48 having the container 47 having a deep side 47a with a small inclination of the side surface 47a to the flange 49 is easy, and even if the protrusion amount of the flange 49 is small, it is accurate. Welding work can be performed.

Normally, the lid 46 has a shallower bottom than the container 47. Therefore, even if the side surface 46a of the lid 46 has a small inclination, there is no concern that the side surface 46a interferes with the outer diameter portion of the ultrasonic transducer 9. Absent.

For comparison, horn 10 'and anvil 1
The ultrasonic transducer 9 ′ when the horn 10 ′ is installed below the anvil 17 ′ in the relative positional relationship with 7 ′,
The relative positional relationship between the horn 10 ′, the anvil 17 ′ and the package 48 is shown by a chain double-dashed line in FIG. 12.

In the case as shown by the chain double-dashed line in FIG.
The maximum outer diameter portion of the ultrasonic transducer 9 ′ located below the surface serving as the processing region, that is, the surface of the flange 49 is the container 47.
Of the package 48 with the container 47 having a deep bottom and a small inclination of the side surface 47a.
It is almost impossible to perform the welding work on the flange 49, and the proper welding work cannot be performed even when the protrusion amount of the flange 49 is small.

[0102]

According to the ultrasonic sealing device of the present invention, the horn is installed above the anvil in the relative positional relationship between the ultrasonic vibrator integrated horn and the anvil, which is required for welding work, and the anvil is also installed. Since the thickness of the container is made thinner than the maximum outer diameter part of the ultrasonic transducer, it is possible to weld the flange on the outer peripheral part of the package with a container with a deep bottom or a container with no slope on the side surface. Even in the case, it is possible to solve the problem that the ultrasonic transducer or anvil with a large diameter interferes with the side surface of the container to be processed, and the container has a deep bottom or the container is not inclined. Even in a package including the above, the welding work can be performed by securely holding the flange on the outer peripheral portion between the horn and the anvil. Further, since the mechanism for feeding the work piece is composed of a roller-shaped anvil that holds the work piece together with the horn and its rotation drive mechanism, the work piece is fed and welded at the same time. It is possible to reduce the size of the device particularly in the feeding direction of the workpiece, as compared with the case where a roller other than the anvil is provided side by side to form an independent feeding mechanism. Moreover, since the workpiece is mechanically automatically fed, a uniform welding operation with a constant transport speed can be achieved. Furthermore, it is not necessary to increase the length of the horn in order to avoid interference between the ultrasonic vibrator and a container with a deep bottom or a container with no slope on the side, so it is possible to reduce the size of the horn and ultrasonic vibrator. It is possible to reduce the size and weight of the device, including the reduction of power consumption and output, and to reduce the size and weight of the horn, it is possible to harmonize the oscillation frequency of the ultrasonic transducer. be able to. In addition, the upper guide and the lower guide that guide the welding target surface of the workpiece along the processing region formed between the tip surface of the horn and the outer peripheral surface of the anvil are based on at least the installation positions of the horn and the anvil. Since it is arranged on the upstream side in the feeding direction, the welding target surface of the workpiece can be easily guided between the tip surface of the horn and the outer peripheral surface of the anvil to start the welding operation.

Further, when the upper guide and the lower guide are provided from the upstream side to the downstream side in the feeding direction with the installation position of the horn and the anvil interposed, a hole is bored in the lower guide to form an anvil. The upper end of the outer peripheral surface is projected above the upper surface of the lower guide, and at the same time, a hole for allowing the tip of the horn to enter is formed in the upper guide so that the tip surface of the horn is located above the lower surface of the upper guide. Since the horn is positioned so that it is positioned, the tip of the work piece that is sandwiched between the upper guide and the lower guide and guided to the processing area does not interfere strongly with the horn tip surface. As a result, jamming of the workpiece, which may occur at the start of the welding work, is prevented.

Further, in addition to the upper guide and the lower guide, a side guide for guiding the edge of the surface to be welded is provided in parallel with the rotating surface of the anvil, so that the edge of the surface to be welded is guided to the side guide. By performing the welding work while pressing it against, it is possible to perform the appropriate welding work at an offset position at a constant distance from the edge of the surface to be welded.

Moreover, since the side guides are provided with the welding path offset amount adjusting means for adjusting the distance between the side guides and the horn and the anvil,
It becomes possible to perform an appropriate welding operation by selecting an offset position at an arbitrary distance from the edge of the surface to be welded.

Further, since the gap adjusting means for adjusting the separation distance between the tip surface of the horn and the outer peripheral surface of the anvil is additionally provided, the optimum welding work can be carried out according to the thickness of the workpiece or the like. it can.

Further, detection means for detecting the work piece is provided upstream of the horn and anvil in the feed direction with reference to the installation positions of the horn and anvil, and the operation of this detection means is detected to detect the ultrasonic transducer and the rotary drive mechanism. Since the operation of is automatically started under the automatic control means, automatic operation that does not require button operation by the operator is achieved, and continuous welding work for many workpieces is achieved. It can be done smoothly.

Moreover, since the automatic control means is provided with a fault recovery function for re-detecting the operating state of the detecting means and driving the rotary drive mechanism in the reverse direction, when the feeding of the workpiece is stopped automatically. It is possible to eliminate the jamming by retracting the workpiece.

[Brief description of drawings]

FIG. 1 is a front view showing a cross section of a main part of an ultrasonic sealing device according to an embodiment of the present invention.

FIG. 2 is a right side view showing a cross section of a main part of the ultrasonic sealing device according to the embodiment.

FIG. 3 is a plan view showing an appearance of the ultrasonic sealing device of the same embodiment.

FIG. 4 is a cross-sectional view showing an enlarged relative position of a horn and an anvil and an upper guide and a lower guide in the vicinity of a processing region.

FIG. 5 is a functional block diagram showing an outline of a configuration of control means incorporated in the ultrasonic sealing device of the same embodiment.

FIG. 6 is a flowchart showing an outline of automatic control executed by a CPU provided in the control means of the same embodiment.

FIG. 7 is a timing chart showing the operations of a limit switch, a timer, a motor control circuit, and an ultrasonic drive circuit in time series.

FIG. 8 is a flowchart showing an outline of processing when a CPU provided in the control means has a failure recovery function.

FIG. 9 is a timing chart showing the operations of a limit switch, a timer, a motor control circuit, and an ultrasonic drive circuit in time series.

FIG. 10 is a flowchart showing an outline of processing when a CPU provided in the control means is provided with a repeatable failure recovery function.

FIG. 11 is a perspective view showing some of the aspects of the anvil.

FIG. 12 is a conceptual diagram showing a relative positional relationship between an ultrasonic transducer and a horn, a roller-shaped anvil, and a package during welding work.

[Explanation of symbols]

1 Ultrasonic Sealing Device 2 Main Body 2a Front Panel 3 Machining Unit 4 Feeding Unit 5 Casing 5a of Machining Unit 5a Bottom of Casing 5b Wall 5c Forming Left End of Casing 5d Wall 5d Forming Front of Casing Mounting Piece 6 of Casing Rivet 7 Leaf spring member (part of gap adjusting means) 8 Rubber bush 9 Ultrasonic transducer 10 Horn 11 Gap adjusting screw (part of gap adjusting means) 12 Height adjusting piece (part of gap adjusting means) 13 L C-shaped support fitting 14 Guide rod 15 Coil spring 16 Feed unit casing 17 Roller-shaped anvil 17a Anvil main body 17b Cutter 18 Motor with reduction gear (rotary drive mechanism) 19 Rotation output shaft 20 Set screw 21 Lower guide 22 Upper guide 23 Lower Guide Hole 24 Upper Guide Hole 25 Slot 26 Screw 27 Rectangular hole 28 Limit switch (detection means) 29 Lead 30 Side guide 31 Opening 32 Side guide mounting member 33 Offset amount adjusting screw (welding path offset amount adjusting means) 34 Coil spring (welding path offset amount adjusting means) 35 Pilot lamp 36 Power switch 37 Output adjustment volume 38 Control means 39 CPU 40 ROM 41 RAM 42 Input circuit 43 Output circuit 44 Motor control circuit 45 Ultrasonic drive circuit 46 Lid 46a Lid side 47 Container 47a Container side 48 Package 49 Flange

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuo Suzuki             626 Fukushima-cho, Hamamatsu City, Shizuoka Prefecture             Inside the company (72) Inventor Kazuhiro Takayama             626 Fukushima-cho, Hamamatsu City, Shizuoka Prefecture             Inside the company F-term (reference) 4E067 AA19 BF00 BF03 CA01 CA05                       EB06                 4F211 AC03 AD05 AG24 AH57 AP06                       AP10 AQ03 AQ04 AR07 AR11                       TA01 TC07 TC16 TJ15 TJ22                       TJ29 TN22 TN23 TQ15                 5D107 AA12 BB01 CC04 FF03 FF05                       FF08

Claims (7)

[Claims] 1. A sheet-shaped workpiece between the outer peripheral surface of a roller-shaped anvil facing the tip end surface of the horn and the tip end surface of the horn by ultrasonically vibrating a horn connected to an ultrasonic transducer. Is an ultrasonic sealing device for welding a workpiece by holding the ultrasonic transducer integrally fixed to the base of the horn,
The thickness of the anvil is formed to be thinner than the maximum outer diameter portion of the ultrasonic transducer, and the horn is installed above the anvil in the relative positional relationship between the horn and the anvil, and the anvil has the workpiece to be processed. A rotary drive mechanism for feeding the surface of the workpiece to be welded is attached, and the surface of the workpiece to be welded is formed along the processing region formed between the tip surface of the horn and the outer peripheral surface of the anvil. An ultrasonic sealing device, wherein an upper guide and a lower guide for guiding are arranged at least on the upstream side in the feeding direction with reference to the installation positions of the horn and anvil. 2. The upper guide and the lower guide are arranged so as to hang from the upstream side to the downstream side in the feeding direction with the installation position of the horn and the anvil interposed therebetween, and the lower guide has an outer peripheral surface of the anvil. A hole for making the upper end of the horn project above the upper surface of the lower guide is formed, while a hole for making the tip of the horn project is formed in the upper guide. The ultrasonic sealing device according to claim 1, wherein a front end surface is arranged above a lower surface of the upper guide. 3. The side guide for guiding the edge of the surface to be welded is provided in parallel with the plane of rotation of the anvil along the feed direction. Ultrasonic sealing device. 4. A welding path offset amount adjusting means for adjusting a separation distance between the side guide and the horn and anvil is attached to the side guide. Ultrasonic sealing device. 5. The gap adjusting means for adjusting the distance between the tip surface of the horn and the outer peripheral surface of the anvil is attached. 4. The ultrasonic sealing device according to 4. 6. A detection means for detecting the work piece is provided upstream of the horn and the anvil in the feed direction with reference to the installation positions of the horn and anvil, and is predetermined after the operation of the detection means is detected. The automatic control means for driving the ultrasonic transducer and the rotation driving mechanism until the condition is satisfied is provided, and the ultrasonic wave according to claim 1, claim 2, claim 4, claim 4 or claim 5. Sonic sealing device. 7. The automatic control means re-detects the operating state of the detecting means when the condition is satisfied, and when the detecting means detects the workpiece, a predetermined decision is made. 7. The ultrasonic sealing device according to claim 6, further comprising a failure recovery function that reversely drives the rotary drive mechanism until the specified condition is satisfied.