JP2010149425A - Vibration welding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration welding apparatus which allows an increase in degrees of freedom in the vibration direction, attaching direction of a tool, and attaching direction when attaching resin parts to be welded to the tool, by reversing a vibration body or the tool by 90°. <P>SOLUTION: Provided is the vibration welding apparatus 1, wherein two resin parts are abutted on each other under pressure, and friction heat due to vibration is generated on the abutting faces so as to perform welding, and the vibration welding apparatus 1 includes: the vibration body 11 reciprocatingly linearly vibrating; a table 12 which is set facing the vibration body and displaceable in the direction facing the vibration body; a vibration side tool (upper tool 13) holding one of the resin parts and attached to the vibration body to vibrate together with the vibration body; and a resting side tool (lower tool 14) holding the other resin part and attached to the table, and further includes a reverse means reversing at least one of the vibration body, vibration side tool and resting side tool by 90° on a plane orthogonal to the facing direction of the vibration body and the table. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vibration welding apparatus, and more specifically, by reversing a vibrating body or jig by 90 °, the vibration direction, the attachment direction of the jig, and the attachment when attaching a resin part to be welded to the jig. The present invention relates to a vibration welding apparatus capable of improving the degree of freedom of direction and the like.

  2. Description of the Related Art A vibration welding apparatus is known in which two resin parts are brought into contact with each other while being pressurized, and frictional heat due to vibration is generated on the contact surface to weld the two resin parts. Conventionally, in such a device, the vibration is a reciprocating linear vibration in only one direction. Therefore, when designing a resin part to be welded and its jig, the vibration during welding as well as the product dimensions and the allowable product dimensions of the device. It was also necessary to consider the direction.

Under such circumstances, a welding apparatus that can vibrate in two orthogonal directions using two electromagnetic vibrators has been proposed (see, for example, Patent Document 1). Since this apparatus can vibrate in two directions, the degree of freedom in designing products and jigs is higher than that of an apparatus that vibrates in only one direction. However, since this apparatus includes two upper and lower electromagnetic vibrators, the structure becomes complicated and the cost is high.
Moreover, in such an apparatus, when attaching a jig to an apparatus, it is necessary to attach a jig according to the direction at the time of welding, and set up a jig in the direction according to the direction. It was necessary to keep.

Japanese Patent Laid-Open No. 5-116220

  The present invention has been made in view of the above-described present situation, and when a vibrating body or jig is inverted by 90 °, the vibration direction, the mounting direction of the jig, and the resin part to be welded are attached to the jig. An object of the present invention is to provide a vibration welding apparatus capable of improving the degree of freedom of the mounting direction and the like.

The present invention is as follows.
1. A vibration welding apparatus that abuts two resin parts while applying pressure, generates frictional heat due to vibration on the contact surface, and welds the two resin parts,
A vibrating body having a vibration source and vibrated by being vibrated by the vibration source;
A table provided to face the vibrating body and displaceable in a direction to face the vibrating body;
A vibration-side jig that is fixedly attached to the vibrating body so as to hold one of the two resin parts and vibrate with the vibrating body;
A stationary side jig that holds the other resin part of the two resin parts and is fixedly attached to the table;
The vibration is a vibration due to a reciprocating linear motion in one direction in a plane orthogonal to the direction in which the vibrating body and the table face each other.
The apparatus further comprises reversing means for reversing at least one of the vibrating body, the vibration side jig, and the stationary side jig by 90 ° in a plane orthogonal to the direction in which the vibrating body and the table face each other. Vibration welding equipment.
2. The reversing means has a stationary reversing mechanism for reversing the stationary jig. The vibration welding apparatus as described.
3. The stationary-side reversing mechanism includes a rotating member that rotatably supports the stationary-side jig about the reversing axis, a reversing drive source that applies a driving force for reversing, and the reversing drive. And 2. a power transmission member that transmits a driving force of a source to the rotating member. The vibration welding apparatus described in 1.
4). The reversing means has a vibration side reversing mechanism for reversing at least one of the vibrating body and the vibration side jig. To 3. The vibration welding apparatus according to any one of the above.
5. The vibration-side reversing mechanism includes a rotating member that rotatably supports at least one of the vibrating body and the vibration-side jig around the reversing axis, and a reversing drive that applies a driving force for reversing. And a power transmission member that transmits a driving force of the reversing drive source to the rotating member. The vibration welding apparatus as described.
6). The reversing means further includes position holding means for holding a position after reversal. To 5. The vibration welding apparatus according to any one of the above.

According to the vibration welding apparatus of the present invention, the reversing means for reversing at least one of the vibration body, the vibration side jig, and the stationary side jig by 90 ° in a plane orthogonal to the direction in which the vibration body and the table face each other is provided. ing. Thereby, freedom degree, such as a vibration direction, the attachment direction to the apparatus of a jig | tool, and the attachment direction at the time of attaching the resin component to weld to a jig | tool, can be improved.
Further, when the reversing means has a stationary side reversing mechanism for reversing the stationary side jig, the direction of the stationary side jig after being attached to the table can be reversed by 90 °, so that it is attached to the table. The direction of the stationary jig before performing is not limited, and it is not necessary to set up the direction of the jig in accordance with the position at the time of welding. Further, even when the direction in which the resin parts to be welded are different from the direction of the jig used for welding, the direction of the jigs can be reversed and matched.
Further, the stationary-side reversing mechanism includes a rotating member that rotatably supports the stationary-side jig around the reversing axis, a reversing drive source that applies a driving force for reversing, and the reversing And a power transmission member that transmits the driving force of the driving source to the rotating member, a stationary side reversing mechanism with a simple configuration can be obtained.
Further, when the reversing means has a vibration side reversing mechanism for reversing at least one of the vibrating body and the vibration side jig, the vibration direction, the attachment direction of the jig to the apparatus, and the resin part to be welded are cured. The attachment direction or the like when attaching to the tool can be set to a desired direction, and when used in combination with the stationary side reversing mechanism, vibration welding with a higher degree of freedom can be realized.
Further, the vibration side reversing mechanism includes a rotating member that rotatably supports at least one of the vibrating body and the vibration side jig around the reversing axis, and a reversing that provides a driving force for the reversing. And a power transmission member that transmits the driving force of the reversing drive source to the rotating member, a vibration side reversing mechanism having a simple configuration can be obtained.
Further, when the reversing unit further includes a position holding unit that holds the position after the reversing, the position of the vibrating body, the vibration side jig, or the stationary side jig after the reversing can be reliably held.

  The vibration welding apparatus according to the present embodiment is a vibration welding apparatus in which two resin parts are brought into contact with each other while being pressed, and frictional heat due to vibration is generated on the contact surface to weld the two resin parts. A vibration body, a table, a vibration-side jig, and a stationary-side jig described below are provided, and a reversing unit is further provided.

As long as the “vibrating body” has a vibration source and is vibrated by the vibration source, its structure, shape, form, etc. are not particularly limited. The vibration of the vibrating body is vibration caused by a reciprocating linear motion in one direction in a plane orthogonal to a direction facing a table to be described later.
Examples of the vibration source include an electromagnetic vibration generator, a vibration motor, and an ultrasonic vibration generator.

  As long as the “table” is provided so as to face the vibrating body and can be displaced in a direction facing the vibrating body, its structure, displacement form, etc. are not particularly limited. The table is displaced in a direction facing the vibrating body, thereby bringing the two resin parts into contact with each other while applying pressure. Examples of the displacement form include displacement by a hydraulic cylinder, displacement by an air cylinder, displacement by a servo motor, and the like.

The “vibration side jig” has a structure as long as it holds one resin part of the two resin parts and is fixedly attached to the vibrating body so as to vibrate together with the vibrating body. The shape, material, attachment form, etc. are not particularly limited.
As long as the “stationary side jig” holds the other resin part of the two resin parts and is fixedly attached to the table, its structure, shape, material, attachment form, etc. Is not particularly limited.

  As long as the “reversing means” reverses at least one of the vibrating body, the vibration side jig, and the stationary side jig by 90 ° in a plane orthogonal to the direction in which the vibrating body and the table face each other. The structure, inversion form, etc. are not particularly limited. The inversion means can have, for example, a stationary side inversion mechanism and / or a vibration side inversion mechanism.

The “stationary reversing mechanism” is not particularly limited in its structure, reversing form, etc., as long as the stationary jig is reversed. The stationary side reversing mechanism can include, for example, a rotating member, a reversing drive source, and a power transmission member.
The “vibration-side reversing mechanism” is not particularly limited in its structure, reversal form, etc., as long as at least one of the vibrating body and the vibration-side jig is reversed. The vibration-side reversing mechanism can include, for example, a rotating member, a reversing drive source, and a power transmission member, similarly to the stationary-side reversing mechanism. As a reversal form of the vibration side reversing mechanism, (1) a form in which the vibration body and the vibration side jig are reversed, (2) a form in which only the vibration body is reversed, and (3) a form in which only the vibration side jig is reversed. can do.

The “rotating member” is not particularly limited as long as the stationary jig is rotatably supported around the reversing axis. For example, a rotating shaft or a rotating table provided rotatably via a bearing. Etc.
The “reversing drive source” is not particularly limited as long as the driving force for reversal is applied, and examples thereof include a hydraulic cylinder, an air cylinder, and a motor.
The “power transmission member” is not particularly limited as long as it transmits the driving force of the reversing drive source to the rotating member. Examples thereof include a lever, a belt, a gear, a rack, an index cam drive, and a Geneva drive. Can do.

  Here, the inversion means can further include a position holding means for holding the position after the inversion. The position holding mode by the position holding means is not particularly limited. For example, a mode in which a pin is inserted and held in a position holding hole provided in the rotating member (see, for example, FIG. 3), hydraulic pressure The form etc. which hold | grip and hold | maintain the member of the side rotated by clamping means, such as a clamp, can be mentioned.

Hereinafter, the present invention will be specifically described with reference to the drawings.
(1) Configuration of Vibration Welding Apparatus The vibration welding apparatus 1 according to the present embodiment abuts the upper member 2 and the lower member 3 that are two resin parts while applying pressure, and frictional heat due to vibration is caused on the contact surface. And the members 2 and 3 are welded. As shown in FIGS. 1 and 2, the vibration welding apparatus 1 includes a vibrating body 11, a table 12, an upper jig 13 (illustrated as a vibration side jig according to the present invention), and a lower side jig. Tool 14 (illustrated as a stationary side jig according to the present invention). Further, a vibration side reversing mechanism 15 and a stationary side reversing mechanism 16 (illustrated as reversing means according to the present invention) are further provided, and these are housed in the main body frame 17.

  As shown in FIG. 1, the main body frame 17 has side plates 17 a and 17 b provided on both side surfaces, and a plurality of beams 17 c that connect them. The side plates 17a and 17b are provided with notches 17d and 17e so that the parts and jigs to be welded can be conveyed linearly in the X direction in FIG. A top plate 17f is provided on the upper side between the side plates 17a and 17b. The top plate 17f is fixed to the left and right side plates 17a and 17b through brackets 17g.

The vibrating body 11 is provided on the lower surface side of the top plate 17 f of the main body frame 17. The vibrating body 11 is provided with a pair of electromagnetic coils (not shown) therein, and vibrates by reciprocating linearly moving in one horizontal direction by alternately applying a high frequency current to the electromagnetic coils.
An upper jig 13 is detachably attached to the bottom surface side of the vibrating body 11. The upper jig 13 corresponds to the outer shape on the upper surface side of the upper member 2 so that the lower member can hold the upper member 2 which is one of the two resin components joined by vibration welding. It has a concave holding portion 13a.

  A table 12 is provided below the vibrating body 11 so as to face the vibrating body 11. The table 12 is supported at its four corners by an elevating mechanism 18, and is thereby moved up and down and displaced in the direction of the vibrator 11. The lifting mechanism 18 has a servo motor 18a, two feed screws 18b driven by the servo motor 18a, and two guides 18c. The upper ends of the two feed screws 18b and the two guides 18c are attached to the table 12, respectively. Then, the table 12 is moved up and down by driving the feed screw 18b by the servo motor 18a and guiding the guide 18c. Further, the servo motor 18a changes the driving torque when the upper member 2 and the lower member 3 are brought into contact with each other by raising and lowering the table 12, and arbitrarily applies the pressure applied to the contact surface. Can be varied.

  On the upper surface side of the table 12, a base 12a rotated by a stationary side reversing mechanism 16 described later is provided. The lower jig 14 is detachably attached to the base 12a. The lower jig 14 is provided on the lower surface side of the lower member 3 so as to hold the lower member 3 which is one of the two resin components joined by vibration welding on the upper surface side. A concave holding portion 14a corresponding to the outer shape is provided.

The stationary-side reversing mechanism 16 is provided on the lower surface side of the table 12, and as shown in FIG. 3, the upper end side is fixed to the base 12a and extends downward through the table 12 (according to the present invention). It is exemplified as such a rotating member. The rotating shaft 16a pivotally supports the base 12a via a bearing 16b. A lever 16c is provided on the lower end side of the rotating shaft 16a, and one end thereof is fixed to the rotating shaft 16a. As shown in FIG. 4, the lever 16c is provided so as to extend in the centrifugal direction of the rotary shaft 16a, and the rod of the cylinder 16d is connected to the tip side thereof. With such a mechanism, the lower jig 14 attached to the base 12a is inverted by 90 ° about the axis A shown in FIG.
Further, as shown in FIG. 3, the stationary-side reversing mechanism 16 includes position holding means 16e having a cylinder and a pin attached to the tip of the rod, and holds the position of the base 12a after reversing. To do. The position holding means 16e holds the position by inserting a pin into a hole 12b provided at the end of the base 12a by driving the cylinder.

  The vibration side reversing mechanism 15 has the same mechanism as the stationary side reversing mechanism 16 described above, and reverses the vibration body 11 and the upper jig 13 attached thereto by 90 °. Thereby, the vibration direction of the vibrating body 11 can be selected to either the X direction or the Y direction in FIG. Further, the vibration side reversing mechanism 15 has position holding means (not shown) similar to the stationary side reversing mechanism 16 described above, and a pin is placed in a position holding hole (not shown) provided in the vibrating body 11. Insert and hold the position of the vibrator 11.

(2) Operation of Vibration Welding Device Next, the operation of the vibration welding device 1 having the above configuration will be described.

First, attachment / detachment of the upper jig 13 and the lower jig 14 will be described.
First, when attaching the jigs 13 and 14, as shown in FIG. 5 (a), the lower jig 14 with the upper jig 13 placed on the upper surface thereof is used as the base of the table 12. Attach to 12a. At this time, it is not necessary to attach the lower jig 14 and the upper jig 13 according to the welding direction, and the jigs may be attached in a 90 ° inverted state. In that case, after the lower jig 14 is fixed to the base 12a, it is reversed by the stationary-side reversing mechanism 16. At this time, the direction of the vibrating body 11 is selected in advance according to the vibration direction of the members 2 and 3 to be welded using the jigs 13 and 14. That is, for example, when the current vibration direction in FIG. 5A is the X direction and the vibration direction at the time of welding is the Y direction, the vibration body 11 vibrates in the Y direction by the vibration-side reversing mechanism 15. As shown in FIG. In addition, when the direction of the upper jig 13 placed on the lower jig 14 is different from the direction in which the upper jig 13 is attached to the vibrating body 11, the direction is adjusted in advance by the stationary side reversing mechanism 16. Keep it.

Next, as shown in FIG. 5B, the lifting mechanism 18 raises the table 12, the lower jig 14, and the upper jig 13 placed on the lower jig 14 to raise the upper jig 13. The upper surface side of the upper jig 13 is brought into contact with the lower surface side of the vibrating body 11, and the upper jig 13 is attached in this state.
Finally, as shown in FIG. 5C, the lower jig 14 and the table 12 are lowered. Accordingly, the lower jig 14 is attached to the table 12 side, and the upper jig 13 is attached to the vibrating body 11.
When removing the jigs 13 and 14, the above procedure is executed in reverse.

Subsequently, the joining of two members by vibration welding will be described.
First, as shown in FIG. 6A, the upper member 2 is fixed to the holding portion 13 a of the upper jig 13, and the lower member 3 is fixed to the holding portion 14 a of the lower jig 14. Then, as shown in FIG. 6B, the table 12, the lower jig 14, and the lower member 3 are raised by the lifting mechanism 18. As a result, the upper member 2 and the lower member 3 come into contact with each other and are pressurized. In this pressurized state, the vibrating body 11 is vibrated to cause friction on the contact surface between the upper member 2 and the lower member 3. Thereby, the resin of the contact surface is in a molten state. At this time, the positions of the upper jig 13 and the lower jig 14 are held by the position holding means of the vibration-side reversing mechanism 15 and the stationary-side reversing mechanism 16 so that no deviation occurs due to vibration. Furthermore, even if the contact surface between the upper member 2 and the lower member 3 is in a molten state, the elevated state is maintained by the lifting mechanism 18. When the vibration is stopped when a predetermined time has elapsed, the contact surfaces of the upper member 2 and the lower member 3 that have been in a molten state are solidified again, and the upper member 2 and the lower member 3 are joined. .
Finally, as shown in FIG. 6C, when the table 12 is lowered, the upper member 2 and the lower member 3 which are joined and integrated together are also lowered.

Here, when the present apparatus 1 is incorporated in a production line, as shown in FIG. 7A, the members 2 and 3 placed on the lower jig 14 after the completion of welding are shown in FIG. As shown in FIG. 7B, the direction may be reversed by 90 ° by using the stationary side reversing mechanism 16 to be carried out from the apparatus 1.
In addition, even if the allowable product size of the apparatus is limited, the jig can be installed only in the longitudinal direction (X direction), and the direction of vibration is the direction orthogonal to the longitudinal direction (Y direction), This can be dealt with by reversing the vibration body 11 using the vibration-side reversing mechanism 15 and vibrating the vibration body 11 in the Y direction.

(3) Effects of Embodiment As described above, according to the vibration welding apparatus 1 of the present embodiment, since the vibration side reversing mechanism 15 and the stationary side reversing mechanism 16 are provided, the vibration direction and the jig mounting direction are welded. The attachment direction when the resin component is attached to the jig can be set to a desired direction, and vibration welding with a high degree of freedom can be realized. Specifically, since the vibration body 11 can be reversed by the vibration side reversing mechanism 15 and the vibration direction can be changed by 90 °, compared with a conventional vibration welding apparatus that can vibrate only in one direction, The degree of freedom when designing products and jigs can be increased. Further, since the direction of the lower jig 14 after being attached to the table 12 can be reversed by 90 ° by the stationary side reversing mechanism 16, the direction of the lower jig 14 before being attached to the table 12 is limited. It is not necessary to arrange the orientation of the jig in accordance with the position at the time of welding. Further, when the upper jig 13 is attached, the vibrating body reversing mechanism 15 reverses the vibrating body 11 in accordance with the state in which the lower jig 14 is installed, and aligns the direction of the upper jig 13. 13 or by the stationary side reversing mechanism 16 to reverse the upper jig 13 placed on the lower jig 14 in accordance with the vibration direction of the vibrating body 11 and to replace the upper jig 13. It can be attached. Moreover, after welding at the time of carrying out from the apparatus 1 using the inversion mechanism, the direction of the jigs 13 and 14 is inverted in accordance with the direction of the members 2 and 3 carried into the apparatus 1 using the inversion mechanism. Since the direction of the members 2 and 3 can be reversed, when the apparatus 1 is incorporated in a production line, it is not necessary to provide a reversing step separately, and the tact time and the production line length are shortened. Production efficiency can be improved.

Further, in this embodiment, the vibration side reversing mechanism 15 and the stationary side reversing mechanism 16 are the rotating shaft 16a as a rotating member that rotatably supports the lower jig 14 around the reversing axis, and driving for reversing. Since the reversing drive source for applying force has the cylinder 16d and the lever 16c as the power transmission member for transmitting the driving force of the cylinder 16d to the rotating shaft 16a, a reversing mechanism with a simple configuration can be obtained. At the same time, reliable reversal can be realized.
Furthermore, in the present embodiment, the vibration side reversing mechanism 15 and the stationary side reversing mechanism 16 have the position holding means 16e that retains the position after reversal. The position of can be reliably held.

In the present invention, the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. That is, in the above-described embodiment, the vibration side reversing mechanism 15 and the stationary side reversing mechanism 16 are provided. However, the present invention is not limited to this. For example, only one of the vibration side reversing mechanism 15 or the stationary side reversing mechanism 16 is provided. It may be.
In the above embodiment, the vibration body 11 or the vibration side reversing mechanism 15 for reversing the vibration body 11 and the upper jig 13 attached thereto is used. However, the present invention is not limited to this. A reversing mechanism for reversing only the tool or a reversing mechanism for reversing only the vibrating body and not reversing the vibration side jig may be used.

Furthermore, in the said Example, it was set as the reversing mechanism 15 and 16 which rotates the rotating shaft 16a using the lever 16c and the cylinder 16d, and it reverses, However, It is not limited to this, For example, the gear fixed to the rotating shaft And a rack provided at the end of the rod of the cylinder, and a reversing mechanism that rotates and rotates the rotating shaft, a reversing mechanism that includes a motor and an index cam mechanism, a reversing mechanism that includes a motor and a Geneva mechanism, A reversing mechanism using a direct motor may be used.
In the above embodiment, the reversing mechanism for reversing 90 ° is not limited to this. For example, a reversing mechanism capable of reversing freely at four positions of 90 °, 180 °, 170 °, 360 °. It is good.

It is a perspective view which shows the vibration welding apparatus which concerns on a present Example. It is a partial expanded front view of the vibration welding apparatus which concerns on a present Example. It is sectional drawing which shows the stationary side inversion mechanism which concerns on a present Example. It is the II arrow directional view of FIG. It is explanatory drawing explaining the effect | action of the vibration welding apparatus which concerns on a present Example, (a) The state in which the lower jig | tool which mounted the upper jig | tool was attached to the table, (b) The upper jig | tool is a vibrating body. (C) shows a state where the upper jig and the lower jig are respectively attached. It is explanatory drawing explaining the effect | action of the vibration welding apparatus which concerns on a present Example, (a) The state in which the upper member and the lower member were each hold | maintained at the upper jig | tool and the lower jig | tool, (b) Two members mutually The state of contact and (c) the state of joining by vibration welding are shown. It is explanatory drawing explaining the effect | action of the vibration welding apparatus which concerns on a present Example, (a) The state where joining by vibration welding was completed, (b) The state which engaged / disengaged two members from the jig | tool is each shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1; Vibration welding apparatus, 11; Vibrating body, 12; Table, 12a; Base, 12b; Hole, 13: Upper jig, 13a; Holding part, 14: Lower jig, 14a: Holding part, 15; Reversing mechanism, 16; stationary side reversing mechanism, 16a; rotating shaft, 16b; bearing, 16c; lever, 16d; cylinder, 16e; position holding means, 17; body frame, 17a, 17b; 17e; Notch, 17f; Top plate, 17g; Bracket, 18; Elevating mechanism, 18a; Servo motor, 18b; Feed screw, 18c; Guide, 2; Upper member, 3: Lower member, A;

Claims (6)

A vibration welding apparatus that abuts two resin parts while applying pressure, generates frictional heat due to vibration on the contact surface, and welds the two resin parts,
A vibrating body having a vibration source and vibrated by being vibrated by the vibration source;
A table provided to face the vibrating body and displaceable in a direction to face the vibrating body;
A vibration-side jig that is fixedly attached to the vibrating body so as to hold one of the two resin parts and vibrate with the vibrating body;
A stationary side jig that holds the other resin part of the two resin parts and is fixedly attached to the table;
The vibration is a vibration due to a reciprocating linear motion in one direction in a plane orthogonal to the direction in which the vibrating body and the table face each other.
The apparatus further comprises reversing means for reversing at least one of the vibrating body, the vibration side jig, and the stationary side jig by 90 ° in a plane orthogonal to the direction in which the vibrating body and the table face each other. Vibration welding equipment.   The vibration welding apparatus according to claim 1, wherein the reversing unit includes a stationary side reversing mechanism for reversing the stationary side jig.   The stationary-side reversing mechanism includes a rotating member that rotatably supports the stationary-side jig around the reversing axis, a reversing drive source that applies a driving force for reversing, and the reversing drive. The vibration welding apparatus according to claim 2, further comprising: a power transmission member that transmits a driving force of a source to the rotating member.   4. The vibration welding apparatus according to claim 1, wherein the reversing unit includes a vibration side reversing mechanism that reverses at least one of the vibrating body and the vibration side jig. 5.   The vibration-side reversing mechanism includes a rotating member that rotatably supports at least one of the vibrating body and the vibration-side jig around the reversing axis, and a reversing drive that applies a driving force for reversing. The vibration welding apparatus according to claim 4, further comprising: a power source; and a power transmission member that transmits a driving force of the reversing drive source to the rotating member.   The vibration welding apparatus according to claim 1, wherein the reversing unit further includes a position holding unit that holds a position after the reversal.

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