JP2001025883A - Ultrasonic seam welding machine and ultrasonic seam welding method using the machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently weld a work to be welded by ultrasonic seam welding. SOLUTION: The ultrasonic seam welding machine is constituted in a manner such that plural pressurizing part 17 are formed by providing projecting parts 17a on an outer peripheral side face 12a of a disc shape horn 12, a vibration apparatus 13 placed in the horizontal direction, is connected to a center of the horn 12, and the apparatus 13 is rotatable around the horizontal axis and movable in the horizontal direction, while, an anvil 14 is movable up and down. For welding the work to be welded set on the anvil 14, the anvil 14 is moved upward, the work to welded is pressurized to the projecting part of a couple of the pressurizing part vibrating at an ultrasonic frequency, and the horn is moved horizontally as it is rotated. Thus, the work to be welded are welded continuously by the ultrasonic seam welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic seam welding machine and an ultrasonic seam welding method using the welding machine. This makes it possible to easily cope with the wear of the workpiece and the change of the workpiece.

[0002]

2. Description of the Related Art Conventionally, ultrasonic seam welding is sometimes used for joining plate materials such as aluminum and copper. Ultrasonic seam welding is a process in which the outer peripheral side of a disk-shaped horn is pressed against the workpiece, ultrasonic vibration is applied to the horn in this state, and the horn is rotated and advanced in the welding direction while rotating. Objects are joined continuously.

FIGS. 6A and 6B show a conventional ultrasonic seam welding.
The state which joined Z2 is shown. The ultrasonic seam welding machine 1 connects a disk-shaped horn 2 and a vibrator 3 for generating ultrasonic vibration, and rotates the horn 2 and the vibrator 3 about a horizontal axis of the vibrator 3 in a horizontal direction. I try to move. On the other hand, the plate material Z which is the workpiece
1, the anvil 4 on which the Z2 is placed can be moved up and down so that the work to be welded can be raised to a position where it is pressed against the outer peripheral side surface 2a of the horn 2.

In order to perform ultrasonic seam welding by the ultrasonic seam welding machine 1, the anvil 4 is raised, then ultrasonic vibration is generated in the vibrator 3, and one end side Z2a of the plate material Z2 is rotated while the horn 2 is rotated. To the other end side Z2b, the plate materials Z1 and Z2 are continuously joined to each other. As described above, since the ultrasonic seam welding machine 1 continuously performs welding, the workpiece can be welded and joined in a short time.

[0005] When a bus bar, a flat cable, or the like, which is a conductive material used in an electric circuit or the like, is joined to each other, a single-point welding ultrasonic welding machine 1 'shown in FIGS. 7A and 7B is used. May be used. The above ultrasonic welding machine 1 '
Are the respective conductors D of the flat cable FC to be welded.
The horn 2 ′ having a width slightly smaller than the width of the flat cable FC is pressed against the bus bar B and the conductor D of the flat cable FC placed on the anvil 4 ′ by superposition, and the ultrasonic vibration of the vibrator 3 causes each member to move. Are sequentially joined. As described above, since the ultrasonic welding machine 1 'performs welding for each member, the degree of ultrasonic vibration, welding time, and the like can be confirmed and set for each welding, and reliable welding can be performed.

[0006]

In the ultrasonic seam welding machine 1 described above, since the horn 2 uses the entire periphery of the outer peripheral side surface 2a as a pressing surface in welding, it is necessary to grasp the use position as the pressing surface. , And uneven wear occurs on the outer peripheral side surface 2a due to a difference in frequency of use and the like, and a required pressing force and a contact area cannot be obtained, so that there is a problem that welding cannot be performed reliably.
In addition, since the horn 2 is rotated to perform continuous welding, it is not possible to check the welding condition and control the setting of the welding time for each of the welding locations, so that there is a problem of lack of reliability in welding. There is also.

Further, the ultrasonic seam welding machine 1 uses the horn 2 to press one end of an object to be welded on the outer peripheral side surface 2a when starting welding, and the other end of the object to be welded after continuous welding is completed. At the moment when the horn 2 further separates, the pressing force applied to the workpiece becomes extremely large, and the both ends of the workpiece become crushed, thereby deteriorating the finished state and appearance of the welding. In addition, the work to be welded is shown in FIG.
Is the conductor D of the bus bar B and the flat cable FC, and the rib L of the resin Z integrally formed with the bus bar B is erected from each member.
And the rib L interfere with each other to prevent welding.

On the other hand, in the ultrasonic welding machine 1 'of single point welding, since each member is welded, the time required for welding to the ultrasonic seam welding machine 1 becomes longer, and the efficiency of the welding process is increased. There is a problem that it is difficult to achieve this.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and combines the shape of the tip of a horn used for single-point welding with the outer peripheral side surface of a disk-shaped horn to provide a conventional ultrasonic wave for single-point welding. The primary task is to reduce the time required for welding as compared to a welding machine. Further, a second object is to make it possible to cope with welding joining of various kinds of objects to be welded by devising a shape provided on the outer peripheral side surface.

[0010]

In order to solve the above-mentioned problems, the present invention is directed to a state in which a second workpiece is superimposed on a first workpiece consisting of a plurality of members arranged at intervals on an anvil. In an ultrasonic seam welding machine that presses a horn that vibrates ultrasonically to weld a first workpiece and a second workpiece, the horn has a disk shape, and each of the first workpieces has an outer peripheral side surface. A pressing portion having a plurality of convex portions arranged in parallel with the members is provided, and an end of the vibrator is connected to the center of the disk surface, and a means for rotating the vibrator about a central axis is provided. On the other hand, either the vibrator or the anvil has means for moving in a direction perpendicular to the central axis, and the first welded portion and the second welded portion superimposed on the anvil at the convex portion of the horn. Lift each member from one end to the other while rotating the horn. It provides an ultrasonic seam welding machine, characterized in that it is configured to weld joint is moved to either the vibrator or the anvil.

As described above, the pressing portion having a plurality of convex portions is provided on the outer peripheral side surface of the horn, and the front end surface of the convex portion is pressed against the work to be welded, and the ultrasonic seam welding is performed. Point welding can be performed continuously, and a long welding time, which is a disadvantage of conventional single point welding, can be reduced. Further, the pressing surface used for welding becomes clear, and the degree of wear of the pressing surface of the horn, which has been difficult with conventional ultrasonic seam welding, can be easily confirmed and managed.

Each of the plurality of protrusions has a width dimension smaller than the width of each member of the work to be welded. Pressing from the upper surface on one end side of each member without climbing further, and also separating from the upper surface on the other end side instead of the end on the other end side when separating, it is possible to reduce the pressing force by the convex portion. It is possible to prevent the finished state of the welded portion from being deteriorated. Further, by rounding both corners of the convex portion, the influence on the workpiece at the start of pressing and at the time of separation can be further reduced.

Further, since the convex portions in the pressing portion are depressed between the juxtaposed convex portions, even when the ribs are erected between the members of the work to be welded, the horn is set so that the ribs fit in the depressed portions. By rotating and moving, the interference between the rib and the horn can be avoided, and ultrasonic seam welding can be performed regardless of the type of the workpiece. The rotation of the horn and the movement of the vibrator or the anvil can be performed independently.

Further, a plurality of sets of the pressing portions are provided at predetermined intervals over the entire outer peripheral side surface of the horn, and when the tip end surfaces of the convex portions of one set of pressing portions are worn, the horn is rotated. In this case, welding is performed by using another set of pressing portions. By doing so, even if the tip surface that becomes the pressing surface of the convex part is worn and the horn needs to be replaced, the horn is rotated by the required angle and immediately welded with the other unused pressing part. Can be performed, and the time required for horn replacement or the like can be reduced. The method of providing these sets of pressing portions is, for example, a total of 1
Two are provided.

[0015] Further, the convex portion of the pressing portion for each of the sets is provided so as to correspond to each member of the first type of the workpiece, and the pressing portions of the pair corresponding to the type of the first type of the workpiece. The horn is rotated and used for welding. By providing the various pressing portions as described above, the horn is required even when the type of the workpiece to be welded is changed and the dimensions and the intervals of the members constituting the workpiece are different. Since the welding can be performed using the pressing portion corresponding to the workpiece to be rotated by the angle rotation, the setup can be changed in a short time when the type of the workpiece is changed.

Further, according to the present invention, an ultrasonic seam welding machine is used to move one of the vibrator and the anvil while rotating the vibrator, and thereby each of the convex portions of the pair of pressing portions of the horn is moved. The ultrasonic seam welding method is characterized in that the members from the one end side to the other end side of the first workpiece and the second workpiece on the anvil are sequentially welded and joined together.

As described above, by moving the vibrator or the like so as to press the convex portion of the pressing portion of the horn against the work to be welded, it is possible to easily perform positioning at the start of welding and the like.
By moving the vibrator while rotating from this state, the convex portion of the pressing portion can be sequentially pressed against the workpiece to perform welding efficiently. The ultrasonic vibration may be generated continuously or intermittently for welding. In the case of continuous generation, welding can be performed in a very short time as in the case of conventional ultrasonic seam welding. In the case of occurrence, welding time and the like can be confirmed for each welding similarly to the conventional single-point welding, so that reliable welding can be performed. Even in the case where the ultrasonic vibration is generated intermittently, the welding is advanced by the rotation and movement of the horn, so that the welding time can be reduced as compared with the conventional single-point welding.

Further, the first workpiece is a bus bar,
An ultrasonic seam welding method is also provided in which the second workpiece is a flat cable, and the bus bar and the flat cable are welded and joined. According to this method, the bus bar and the flat cable formed of a plurality of members can be securely welded without any trouble.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. In the ultrasonic horn welding machine 10 of the present embodiment shown in FIGS. 1A and 1B, a horn 12 is connected to a vibrator 13 that generates ultrasonic vibration, and the horn 12 is rotated by driving a rotation motor 11. Then, the horn 12 and the vibrator 13 are moved in the horizontal direction by driving the moving motor 21. Further, the anvil 14 on which the workpiece is placed can be vertically moved vertically by first and second cylinders 15 and 16 attached below.

As shown in FIGS. 2 (A) and 2 (B), the horn 12 has a disk shape and has a thickness capable of obtaining a required rigidity and a welding length. In the present embodiment, the outermost peripheral portion of the disk is used. Is 60 mm in diameter and 5 mm in thickness. A plurality of convex portions 17a are juxtaposed on the outer peripheral side surface 12a of the horn 12.
Is formed.

Each of the projections 17a of the pressing portion 17 is set to be slightly smaller than the width of each member of the first workpiece to be described later, and has a size corresponding to each member interval. In this embodiment, the width of the projection 17a is 1 mm, and the interval is 0.9 mm. Also,
The depressions 17b between the projections 17a are made deeper than the height of the ribs erected from the members of the first workpiece to prevent interference with the ribs when the horn is pressed. The height is set to 1 mm. Further, a knurling process is performed on the distal end surface 17c of each convex portion 17a serving as a pressing surface at the time of welding so that irregularities are formed in a substantially mesh shape, and both corners of the distal end surface 17c are rounded.

The projections 17a are provided in a number corresponding to the number of members of the first workpiece.
Are arranged side by side to form a set of pressing portions 17. In addition, the convex portion 17a located at one end of the pressing portion 17
In the case of -1, only the left end side is slightly extended to be slightly wider than the width described above, thereby facilitating the alignment of the workpiece and the projection 17a-1. A plurality of sets of the pressing portions 17 having the convex portions 17a are provided at required intervals over the entire circumference of the outer peripheral side surface 12a of the horn 12, and in the present embodiment,
A total of 12 sets of pressing portions 17 are provided at intervals of 30 °.

As shown in FIGS. 1A and 1B, the horn 12 having the pressing portion 17 is connected to one end of the vibrator 13 at the center on one side of the disk surface. The vibrator 13 has a cylindrical cover 13 having a required rigidity on the outer peripheral surface.
The support brackets 18A and 18B are provided upright from the movable bottom plate 19 and have bearings so as to be rotatable about the central axis of the columnar shape. The vibrator 13 has a built-in booster including a vibrator and a constant-speed / constant-amplitude oscillator, and a constant-pressure variable power supply for supplying required power. 13b is a vibrator 13
In order to cope with the rotation, a slip ring is used to connect to the outside.

A rotating motor 11 for rotating the horn 12 is fixed to the support bracket 18A, and a driving pulley 11a is attached to a motor shaft of the rotating motor 11. The rotation motor 11
Is connected to a motor rotation control device (not shown) so that the motor rotation can be appropriately controlled. The motor rotation control device is connected to a control device such as a sequencer for controlling the entire movement of the ultrasonic seam welding machine 10, and controls the motor rotation in association with the movement of the anvil 14 and the like.

A belt 27 is hung on the outer peripheral surface of the driving pulley 11a of the rotation motor 11 and the cover 13a of the vibrator 13 to transmit the driving force of the rotation motor 11 to rotate the horn 12. I have to. The rotation motor 11 can rotate in both clockwise and counterclockwise directions.

Further, a slide unit 25 meshed with a ball screw 24 is attached to the moving bottom plate 19, and one end of the ball screw 24 is
Is connected to a moving motor 21 fixed to a top surface 22a of the first motor through a bracket 26. When the moving motor 21 rotates, the ball screw 24 also rotates, and accordingly, the slide unit 25 moves in the axial direction of the ball screw 24, so that the horn 12 and the vibrator 13 move the moving bottom plate 1.
9 along a rail 23 provided on the lower surface of the vibrator 13.
To move horizontally in the direction perpendicular to the axis. The movement motor 21 is also connected to the motor rotation control device, similarly to the rotation motor 11. The moving motor 21 can also rotate in both clockwise and counterclockwise directions, so that the horn 12 and the like can move left and right along the rail 23.

On the other hand, the anvil 14 has a rigidity that can withstand the pressing with the horn 12, and has an upper surface 14a having an area on which a required number of workpieces can be placed. The anvil 14 is provided with a work holder 14b for positioning and fixing the work to be welded on the upper surface 14a, and a sensor (not shown) is provided on the work holder 14b to check the presence or absence of the work to be welded. I can do it. Further, the anvil 14 can be moved up and down in two stages by first and second cylinders 15 and 16 located below. As shown in FIG. 1 (B), the first cylinder 15 located on the lower side is used for vertical movement when placing an object to be welded on the anvil 14 and the second cylinder 16 located on the upper side. Is used for pressing the work to be welded on the anvil 14 against the horn 12 while the rod 15a of the lower first cylinder 15 is stretched.

An ultrasonic seam welding method using the ultrasonic seam welding machine 10 shown in FIGS. 3A to 3D is as follows. First, a bus bar B as a first workpiece to be welded comprising a plurality of members arranged side by side on the anvil 14 is provided.
The conductors of the flat cable FC, which is the second workpiece, are superimposed on the conductors 10. The bus bar B10 is formed integrally with the resin Z on which the rib L is erected, and each member B10-
The conductors D-1 to D-6 of the flat cable FC are placed on the conductors D-1 to D-6.
Is placed and fixed by the work holder 14b, and the first cylinder 15 is operated to raise the anvil 14 to a required position.

In this state, as shown in FIG. 3A, the horn 12 is driven by the moving motor 21 so that the center of the horn 12 is located right above the conductor D-1 at the left end of the flat cable FC. To the above position, and the wide convex portion 17a-1 on one end side of the pair of pressing portions 17 is located at the lowermost end, and the distal end surface 17c is located on the upper surface 14a of the anvil 14.
The horn 12 is rotated by the rotation motor 11 so as to face in parallel with the horn 12.

In the above state, the ultrasonic vibration is generated by the vibrator 13 so that the horn 12 is ultrasonically vibrated. Then, as shown in FIG. To the conductive part D-1
Is pressed until it is pressed, and the member B10-1 at the left end of the bus bar B10 and the conductor D-1 are subjected to ultrasonic seam welding. At this time, since welding is performed only on the convex portion 17a-1, it is easy to confirm the welding state, and the welding time and the like can be appropriately adjusted.

When the welding is completed as described above, the generation of the ultrasonic vibration is stopped and, as shown in FIG. 3C, the horn 12 is moved to the arrow R side in the figure by driving the rotation motor 11. Rotate and move motor 21
Is driven to move the horn 12 in the direction of the arrow X. When the protrusion 17a-1 separates from the conductor D-1, the width of the protrusion 17a-1 is set to a size that does not protrude from the other end, which is the separation side of the conductive pair D-1, and the front end surface is set. Since the corner of 17c is rounded, excessive pressing force is applied to the conductor D
−1 to prevent deterioration of the finish of the welded portion.

Further, when the horn 12 is rotated, the rib L standing upright between the members of the bus bar B10 is accommodated in the recess 17b of the pressing portion 17, so that the horn 12 rotates without interfering with the rib L. And can move.

By the rotation and movement of the horn 12, as shown in FIG. 3D, the second convex portion 17a-2 from the left.
Presses the second conductor D-2 to generate ultrasonic vibration again, and the second member B10-2 of the bus bar B10.
And ultrasonic seam welding. The convex portion 17a-2
Also starts pressing the conductor D-2, since the width dimension of the convex portion 17a-2 is smaller than the width of the conductor D-2, so that it does not ride on one end of the pressing side, and Since the pressing is started, it is possible to prevent the conductor D-1 from being crushed due to an excessive pressing force.

By repeating the above welding sequentially, the conductor D-6 of the flat cable FC located at the right end and the member B10-6 at the right end of the bus bar B10 are subjected to ultrasonic seam welding in the same manner as described above, and are connected to the bus bar B10. Flat cable FC is joined. After welding is completed, the rods of the first and second cylinders 15 and 16 are retracted, the anvil 14 is lowered, the work holder 14b is released, and the bus bar B10 and the flat cable FC that are welded and joined are taken out. I have. By performing the welding by rotating and moving the horn 12 in this way, the conventional single-point welding takes about 1.5 to 2 seconds to weld at one location, and is reduced to less than 1 second.

The welding by the ultrasonic seam welding machine 10 is not limited to the above-described embodiment. For example, a cylinder or the like is provided on the vibrator 13 so that the horn 12 can press the workpiece to the workpiece. Alternatively, both the vibrator 13 and the anvil 14 may be moved up and down, respectively. Further, instead of moving the vibrator 13 horizontally, the anvil 14 may be moved horizontally in the direction perpendicular to the axis of the vibrator 13. Also, ultrasonic vibration
As described above, the horn 12 may be generated not only intermittently but also continuously, and the horn 12 may be rotated and moved faster than the above, so that the welding time may be further reduced.

Further, the first workpiece and the second workpiece to be welded are not limited to the bus bar and the flat cable, but may be the bus bar and the bus bar, the flat cables, the bus bar and the terminal, and the flat cable. It can also be applied to welding of terminals, bus bars and electric wires, flat cables and electric wires. In addition, by stacking a plurality of the first to-be-welded parts and the second to-be-welded parts on the anvil 14 in the traveling direction of the horn 12 so as to correspond to the intervals of the pressing parts 17 of each set, A plurality of sets of objects to be welded can be continuously welded using the set of pressing portions 17.

Further, when the welding is performed as described above, the tip surface 17c of the convex portion 17a of the pair of pressing portions 17-1 is worn, and it is impossible to perform reliable welding, as shown in FIG.
The horn 12 is rotated by a required angle to use another set of pressing portions 17-2 having the unworn projections 17a. By doing so, the labor and time required for replacing the horn 12 can be reduced. For example, when the horn is provided with 12 sets of pressing sections, even if one set of pressing sections is worn, 12 times can be dealt with only by turning the horn without replacing the horn itself. Further, since the wear is limited to the tip end surface of the convex portion 17a, the degree of wear can be easily controlled, so that the reliability of the welding state can be improved, and the horn itself can be used without waste and the life can be extended.

FIG. 5 shows a modified horn 12 '. The horn 12 'also has a plurality of sets of pressing portions 17' formed by providing projections 17a 'on the outer peripheral side surface 12a' as in the conventional case. It is formed so as to correspond to every two welded objects. Specifically, when the work to be welded is composed of four members Y-1 to Y-4, the first set of pressing portions 17-1 'is connected to the four projections 17-1.
a 'and three depressions 17b', and when another workpiece is wide and composed of six members Y-1 'to 6', a second set of pressing parts 17-2 ' Are formed by a convex portion 17a 'having six wide end surfaces and a concave portion 17b' having five wide openings. Thus, a plurality of sets of pressing portions 17 '(17-1') corresponding to different types of workpieces are to be welded.
Etc.) are provided on the entire periphery of the outer peripheral side surface 12a '.

In order to perform ultrasonic seam welding with the horn 12 ', the horn 12' is rotated by a required angle to weld the first set of pressing portions 17 when welding a workpiece consisting of the members Y-1 to Y-4. -1 'is positioned at the lowermost position, and the pressing portion 17-
1 'is used for welding. Also, members Y-1 ′ to 6 ′
When welding a workpiece consisting of the horn 12 ', the horn 12' is rotated by a required angle so that the second set of pressing portions 17-2 'is positioned at the lowermost position and used for welding.

As described above, by appropriately providing a pressing portion corresponding to each type of welding on the entire circumference of the horn, even if the type of the workpiece is changed, the rotation of the horn can cope with the above-mentioned model change. As a result, the labor and time required for exchanging the horn and the like can be reduced. In addition, even if the pressing portion for each type is provided, if there is room to provide the pressing portion on the outer peripheral side surface of the horn, a plurality of pressing portions that are frequently used are provided so as to cope with the wear of the convex portion. Is also good. Further, if the width of each member is different for the same workpiece, the pressing portions of the same set may be formed with different projections correspondingly.

[0041]

As is clear from the above description, by using the present invention, a pressing portion having a convex portion is formed on the horn, and the horn is moved while rotating, so that the conventional single-point welding can be performed. The welding time can be reduced. In addition, even if ribs are provided upright between the members of the workpiece due to the depressions between the projections, welding can be performed without interference. Further, since the contact portion at the time of welding is limited to the tip end surface of the convex portion, the degree of wear can be easily controlled, and the horn can be reliably used until its service life, and ultrasonic vibration is generated intermittently. In such a case, management settings such as welding time can be made in the same manner as in conventional single-point welding. In the case of continuously generating ultrasonic vibration, the welding time can be further reduced. In addition, the influence of excessive pressing force and the like when the convex portion is pressed against and separated from the work to be welded can be prevented by the size of the convex portion and the rounded diagonal shape of the tip end surface.

Further, by providing a plurality of sets of pressing portions all around the outer peripheral side surface of the horn, even if the protruding portions are worn, it is possible to use a pressing portion having an unused protruding portion only by rotating the horn. Therefore, it is not necessary to replace the horn every time wear occurs, and the labor and time required for replacement can be reduced.
Further, by providing a plurality of sets of pressing portions corresponding to various workpieces on the outer peripheral side surface of the horn, even if the type of the workpiece to be welded changes, it becomes possible to respond only by rotating the horn, It is also possible to reduce the trouble of changing the setups due to the change of the type of the workpiece.

[Brief description of the drawings]

FIG. 1 is an ultrasonic seam welding machine according to the present invention,
(A) is a top perspective view, and (B) is an overall side view.

FIG. 2 is a horn used in the ultrasonic seam welding machine of the present invention, wherein (A) is a front view and (B) is an enlarged view of a main part.

FIGS. 3A, 3B, 3C and 3D are schematic diagrams of a welding method using the ultrasonic seam welding machine of the present invention.

FIG. 4 is a schematic view showing a change of a pressing portion of a horn.

FIG. 5 is a front view showing a horn of a modified example.

FIGS. 6A and 6B are perspective views showing conventional ultrasonic seam welding.

FIG. 7 shows conventional ultrasonic welding of single point welding, and (A)
Is a perspective view, and (B) is a sectional view.

[Explanation of symbols]

 1,10 Ultrasonic seam welding machine 2,12 Horn 3,13 Vibrator 4,14 Anvil 11 Rotating motor 17 Pressing part 17a Convex part 17b Depressed part 21 Moving motor 27 Belt B, B10 Bus bar FC Flat cable D Conductor L rib

Claims (5)

[Claims] An ultrasonic vibration horn is pressed in a state in which a second workpiece is overlapped on a first workpiece consisting of a plurality of members arranged at intervals on an anvil, and the first workpiece is pressed. And an ultrasonic seam welding machine for welding the second workpiece and the horn, wherein the horn has a disk shape and has a plurality of convex portions arranged on the outer peripheral side surface in parallel with each member of the first workpiece. And a means for connecting the end of the vibrator to the center of the disk surface and having means for rotating about the central axis of the vibrator, while one of the vibrator or the anvil is Means for moving in a perpendicular direction, each member from one end to the other end of the first welded portion and the second welded portion superimposed on the anvil at the convex portion of the horn, the horn is rotated While moving either the vibrator or the anvil An ultrasonic seam welding machine having a configuration for welding and joining. 2. A plurality of sets of the pressing portions are provided at a required interval over the entire outer peripheral side surface of the horn.
2. The ultrasonic seam welding machine according to claim 1, wherein when a tip end surface of the convex portion of one set of pressing portions is worn, the horn is rotated and welded and joined by using another set of pressing portions. . 3. The convex portion of the pressing portion for each set is provided so as to correspond to each member of the first welded object of a different type, and the pressing portion of the set corresponding to the type of the first welded object is provided. The ultrasonic seam welding machine according to claim 2, wherein the horn is rotated to be used for welding. 4. An ultrasonic seam welding machine according to claim 1, wherein one of the vibrator and the anvil is moved while rotating the vibrator, The respective horns of the pair of pressing portions of the horn are sequentially welded to join each member from one end side to the other end side of the first workpiece and the second workpiece on the anvil. Sonic seam welding method. 5. The ultrasonic seam welding method according to claim 4, wherein the first workpiece is a bus bar, and the second workpiece is a flat cable, and the bus bar and the flat cable are welded to each other.