JP2006212692A - Ultrasonic joining method and device therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic joining method and a device therefor where a member for holding is made needless, and the mispositioning between the device side and the member to be joined can be prevented. <P>SOLUTION: Regarding the ultrasonic joining method where, in such a manner that first and second flange parts 111, 121 formed on each one end side of first and second tubular members 110, 120 are mutually confronted, the first flange part 111 is set to an anvil 11, and, while pressurizing the second flange part 121 by a horn 12, vibration is caused, thus the first and second flanges are joined, at least either the anvil 11 or the horn 12 is provided with mispositioning prevention means 11a, 11b for preventing the mispositioning in the radial direction of either the first flange part 111 or the second flange part 121 by the setting of the shape thereof, so as to perform the joining. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ultrasonic bonding method and apparatus for bonding a metal first member by vibrating the metal first member while applying pressure to the metal second member.

  Conventionally, as a method of joining two metal members, for example, an ultrasonic joining method as shown in Patent Document 1 is known. In this ultrasonic bonding method, for example, a pipe (straight pipe) having a flange portion on one end side is used as a first member, and, for example, a header tank wall surface of a heat exchanger is used as a second member. Then, with the heat exchanger fixed with the anvil, the horn oscillates the pipe (flange portion) while applying pressure to the heat exchanger (header tank wall surface) side with a predetermined pressurizing force to cause friction, and the oxide film And the flange portion is pressure bonded to the header tank wall surface by frictional heat generated on the contact surfaces of the two.

Here, the horn is formed in a cylindrical shape so as to cover the outer peripheral surface of the pipe in contact with the outer side surface (side surface of the heat exchanger) of the flange portion, and is set from the side opposite to the flange portion of the pipe (straight pipe). It has become so. In addition, an O-ring for holding a pipe is mounted inside the horn so that a positional deviation between the pipe and the horn is prevented (FIG. 5 in Patent Document 1). Thereby, the interference by the relative slip of the member (pipe) and apparatus side (horn) at the time of pressurization vibration is suppressed, and the damage to the member side is reduced.
JP 2001-246479 A

  However, since the O-ring (holding member) is used as described above in order to prevent positional deviation between the member and the horn (device side), the number of component members on the device side increases, and as a result, the assembly portion The setting of the (O-ring groove in the horn) and the assembly of the O-ring are required, leading to high equipment costs.

  In view of the above problems, an object of the present invention is to provide an ultrasonic bonding method and apparatus capable of preventing the positional deviation between the apparatus side and a member to be bonded without using a holding member.

  In order to achieve the above object, the present invention employs the following technical means.

  In the first aspect of the present invention, the first and second flange portions (111, 121) formed on one end sides of the first and second tubular members (110, 120) are opposed to each other. The first flange portion (111) is set on the anvil (11), and the second flange portion (121) is vibrated while being pressed by the horn (12) to join the first and second flange portions (111, 121). In the ultrasonic bonding method, at least one of the anvil (11) and the horn (12) is displaced in the radial position of at least one of the first flange portion (111) and the second flange portion (121) depending on the shape setting. It is characterized in that bonding is performed by providing means for preventing misalignment (11a, 11b).

  As a result, the holding member as described in the section of the prior art is unnecessary, and the position of the first flange portion (111) or the second flange portion (121) with respect to the anvil (11) or the horn (12) at the time of joining. Misalignment can be prevented.

  As the setting shape of the position shift prevention means (11a, 11b), as in the invention according to claim 2, at least one of the first flange portion (111) or the second flange of the anvil (11) or the horn (12). An inclined portion (11a) that is provided on a surface on which at least one of the portions (121) abuts and is inclined in the radial direction of at least one of the first flange portion (111) or the second flange portion (121). Can do.

  As a result, the outer peripheral portion of the first flange portion (111) or the second flange portion (121) abuts on the inclined portion (11a) and receives a reaction force on the center side, or the first flange portion (111) or Since the position of the second flange portion (121) is substantially restrained following the inclined portion (11a), the displacement is prevented.

  Further, as the setting shape of the position shift prevention means (11a, 11b), as in the invention according to claim 3, at least one of the first flange portion (111) or the first flange of the anvil (11) or the horn (12). A groove portion (11b) is provided on the surface on which at least one of the two flange portions (121) abuts and into which at least one of the first flange portion (111) or the second flange portion (121) is inserted and fitted. You can also.

  Thereby, since the outer peripheral part of the 1st flange part (111) or the 2nd flange part (121) fits into a groove part (11b), and a position is almost restrained, position shift is prevented.

  In the invention according to claim 4, the outline of either the first flange portion (111) or the second flange portion (121) is formed to be smaller than the other outline, and the anvil (11) and The outline of the horn (12) is formed so as to be larger than the outline of the first and second flange portions (111, 121), and bonding is performed.

  Accordingly, when the second flange portion (121) is pressed against the first flange portion (111) by the horn (12), the small outline is bitten into the other side and positioned, so that the first tubular member The positional accuracy between (110) and the second tubular member (120) can be improved.

  In invention of Claim 5, the flange part (121) formed in the one end side of the tubular member (120) is made into the outer peripheral surface (131) of the hole part of the other party member (130) by the horn (12). This is an ultrasonic bonding method for bonding by oscillating while applying pressure, and at least one of the horn (12) or the outer peripheral surface (131) is prevented from being displaced in the radial direction by setting the shape of the flange (121). The position shift prevention means (132, 133) is provided to perform bonding.

  Thereby, the holding member is not required, and the displacement of the flange portion (121) with respect to the horn (12) at the time of joining can be prevented.

  In the invention according to claim 5, as the setting shape of the misalignment prevention means (132, 133), as in the invention according to claim 6, the side on which the flange portion (121) of the outer peripheral surface (131) abuts. It can be set as the inclination part (132) which is provided in this surface and inclines in the radial direction of an outer peripheral surface (131).

  As a result, the outer peripheral portion of the flange portion (121) contacts the inclined portion (132) and receives a reaction force toward the center, or the position of the flange portion (121) is substantially restrained following the inclined portion (132). As a result, displacement is prevented.

  Further, in the invention described in claim 5, as the setting shape of the position shift prevention means (132, 133), the flange portion (121) of the outer peripheral surface (131) is applied as in the invention described in claim 7. It can also be set as the groove part (133) which is provided in the surface on the side to contact and into which a flange part (121) is inserted and fitted.

  Thereby, since the outer peripheral part of a flange part (121) fits into a groove part (133) and a position is substantially restrained, position shift is prevented.

  In the invention according to claim 8, the outline of either the flange portion (121) or the outer peripheral surface (131) is formed to be smaller than the other outline, and the outline of the horn (12) is formed as the flange portion. It is characterized by being formed so as to be larger than the outline of (121) and joining.

  As a result, when the flange portion (121) is pressed against the outer peripheral surface (131) by the horn (12), the small outline cuts into the counterpart and is positioned, so that the tubular member (120) and the counterpart The positional accuracy with the member (130) can be improved.

  The invention according to claims 9 to 16 is for joining the first tubular member (110) and the second tubular member (120) or joining the tubular member (120) and the counterpart member (130). The anvil (11) and the horn (12) of the ultrasonic bonding apparatus, wherein at least one of the anvil (11) and the horn (12) is shifted in position on the member (110, 120, 130) side by shape setting. The position shift prevention means (11a, 11b, 132, 133) to prevent is provided, By this, it is set as the apparatus which enables the ultrasonic bonding method of Claims 1-8, respectively. be able to.

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.

(First embodiment)
A first embodiment according to the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view showing an ultrasonic joining apparatus 10 for joining the first pipe 110 and the second pipe 120 to form the joined pipe 100.

  As shown in FIG. 1, the first pipe 110 is a metal pipe (for example, aluminum or aluminum alloy) and corresponds to the first tubular member in the present invention, and has a circular shape on the entire circumference on one end side. The first flange portion 111 is formed. Similarly to the first pipe 110, the second pipe 120 is a metal (for example, aluminum or aluminum alloy) pipe and corresponds to the second tubular member of the present invention. A circular second flange portion 121 is formed on the entire circumference. The outer diameter of the second flange portion 121 is formed to be smaller than the outer diameter of the first flange portion 111. The pipes 110 and 120 are arranged so that the flange portions 111 and 121 face each other, and the flange portions 111 and 121 are joined by the ultrasonic joining apparatus 10 described below to form the joined pipe 10. The joint pipe 100 is suitable for use in, for example, a pipe connected to a heat exchanger for an air conditioner in which a refrigerant flows. Specifically, the first pipe 110 is joined to the main body of the heat exchanger, and the second pipe 120 is joined to the first pipe 110 by ultrasonic joining, so that the joining to the heat exchanger can be performed. It can be used as the joining pipe 100 that is easy and can ensure airtightness.

  The ultrasonic bonding apparatus 10 has an anvil 11 and a horn 12. The anvil 11 is a cylindrical member, and the first pipe 110 can be inserted inside with a predetermined gap. The outer diameter of the anvil 11 is set larger than the outer diameter of the first flange portion 111. The first pipe 110 (first flange portion 111) is received. The surface of the anvil 11 on the side on which the first flange portion 111 abuts is formed as an inclined portion 11a that is inclined in the cylindrical radial direction. The inclined portion 11a corresponds to the position shift prevention means in the present invention, and the inclination direction is a direction away from the horn 12 from the outer diameter side to the inner diameter side of the anvil 11.

  The horn 12 is a cylindrical member similar to the anvil 11, and the second pipe 120 can be inserted inside with a predetermined gap. The outer diameter of the horn 12 is larger than the outer diameter of the second flange portion 121. The second flange 121 is pressed toward the first flange 111 (white arrow in FIG. 1) and vibration is applied in the direction in which the surface of the second flange 121 expands (in FIG. 1). Solid line arrows).

  Next, a bonding method using the ultrasonic bonding apparatus 10 will be described. First, the horn 11 is raised so that the space between the anvil 11 and the horn 12 is open, and the first pipe 110 is set on the anvil 11 so that the first flange portion 111 faces upward. Further, the second pipe 120 is set so that the second flange portion 121 is placed on the upper side surface of the first flange portion 111.

  Thereafter, the horn 12 is lowered to sandwich the flange portions 111 and 121 with the anvil 11. Then, the second flange 121 is pressed against the first flange 111 by the horn 12 (approx. 10 Mp is added), and vibration is further applied in the direction in which the surface of the second flange 121 expands (amplitude is approximately 50 μm). 2), friction is caused, the oxide film is destroyed, and both flange portions 111 and 121 are joined (solid phase joining) by the frictional heat generated on both contact surfaces. And the joining pipe 100 is completed by this joining.

  In the present embodiment, since the anvil 11 is provided with the inclined portion 11a, even if the first flange portion 111 tends to be displaced in the radial direction via the second flange portion 121 due to vibration from the horn 12, the first flange portion. The outer peripheral portion of 111 comes into contact with the inclined portion 11a and receives a reaction force on the center side, so that the displacement of the first pipe 110 with respect to the anvil 11 can be prevented. The holding member as described in the section of the prior art is not necessary. Therefore, interference between the first pipe 110 and the anvil 11 can be prevented, and damage to the first pipe 110 can be eliminated.

  Moreover, since the outer diameter of the 2nd flange part 121 is made smaller than the outer diameter of the 1st flange part 111, and the outer diameter of the horn 12 is made larger than the 2nd flange part 121, at the time of the first pressurization The outer peripheral portion of the second flange portion 121 is positioned by cutting into the first flange portion 111 side. Thereby, the positional accuracy of the first pipe 110 and the second pipe 120 can be improved. Since the second pipe 120 is substantially restrained by the first pipe 110 due to the above biting, the displacement of the second pipe 120 by the horn 12 and the interference with the horn 12 can be prevented.

  In addition, as shown in FIG. 2 (Modification 1 of the first embodiment), an inclined portion 12a may be provided on the surface of the horn 12 on the side where the second flange portion 121 abuts as a displacement prevention means. good. The inclination direction of the inclined portion 12a is a direction away from the anvil 11 from the outer diameter side of the horn 12 toward the inner diameter side. Thereby, the direct position shift with respect to the 2nd pipe 120 by the horn 12 can be prevented. About the 1st flange part 111, the 1st flange part 111 will be positioned when the 2nd flange part 121 bites into the 1st flange part 111 like the said 1st Embodiment.

  Moreover, you may make it provide an inclination part (11a, 12a) in both the anvil 11 and the horn 12. FIG.

(Second Embodiment)
A second embodiment of the present invention is shown in FIG. In the second embodiment, the setting shape of the misalignment prevention means is changed with respect to the first embodiment.

  Here, the misalignment prevention means is formed as a groove 11b into which the first flange 111 is inserted and fitted on the surface of the anvil 11 on the side where the first flange 111 abuts. However, the depth dimension of the groove part 11b is made smaller than the plate | board thickness dimension of the 1st flange part 111. FIG.

  Thereby, since the outer peripheral part of the 1st flange part 111 fits into the groove part 11b, and a position is substantially restrained, the position shift by the vibration from the horn 12 can be prevented. The biting action of the second flange 121 on the first flange 111 is the same as that in the first embodiment.

  As shown in FIG. 4 (Modification 1 of the second embodiment), a groove portion 12b may be provided on the surface of the horn 12 on the side where the second flange portion 121 abuts as a displacement prevention means. good. Thereby, the direct position shift with respect to the 2nd pipe 120 by the horn 12 can be prevented. About the 1st flange part 111, the 2nd flange part 121 will be positioned by biting into the 1st flange part 111 similarly to the said 1st Embodiment.

  Moreover, you may make it provide a groove part (11b, 12b) in both the anvil 11 and the horn 12. FIG.

(Third embodiment)
A third embodiment of the present invention is shown in FIG. In the third embodiment, a thick pipe 130 is used as a mating member of the second pipe 120 with respect to the first embodiment, and a joining surface on the end side of the thick pipe 130 (the present invention). In correspondence with the outer peripheral surface of the hole portion in FIG. The inclination direction of the inclined portion 132 is a direction away from the horn 12 from the outer diameter side to the inner diameter side of the thick pipe 130.

  Further, the outer diameter of the second flange portion 121 is made smaller than the outer diameter of the thick pipe 130, and the outer diameter of the horn 12 is made larger than that of the second flange portion 121.

  When the second pipe 120 and the thick pipe 130 are joined, the thick pipe 130 is fixed by a fixing portion (not shown).

  In the present embodiment, the second flange portion 121 abuts on the inclined portion 132 and receives a reaction force on the center side at the time of joining, so that the displacement by the horn 12 is prevented. Moreover, since the outer peripheral part of the 2nd flange part 121 bites into the joint surface 131 side at the time of the first pressurization, the position shift prevention effect is further promoted.

  As shown in FIG. 6 (Modification 1 of the third embodiment), an inclined portion 12a may be provided on the surface of the horn 12 on the side where the second flange portion 121 abuts as a displacement prevention means. good. Thereby, the direct position shift with respect to the 2nd pipe 120 by the horn 12 can be prevented. Moreover, since the outer peripheral part of the 2nd flange part 121 bites into the joint surface 131 at the time of the first pressurization, the position shift prevention effect is further promoted.

  Further, the inclined portions (132, 12a) may be provided on both the anvil 11 and the horn 12.

(Fourth embodiment)
A fourth embodiment of the present invention is shown in FIG. In the fourth embodiment, the shape setting of the misregistration prevention means is changed with respect to the third embodiment.

  Here, the misalignment prevention means is formed as a groove portion 133 into which the second flange portion 121 is inserted and fitted on the joint surface 131 of the thick pipe 130. However, the depth dimension of the groove part 133 is made smaller than the plate thickness dimension of the second flange part 121.

  Thereby, since the outer peripheral part of the 2nd flange part 121 fits into the groove part 133, and a position is substantially restrained, the position shift by the vibration from the horn 12 can be prevented. Moreover, since the outer peripheral part of the 2nd flange part 121 bites into the groove part 133 at the time of the first pressurization, the position shift prevention effect is promoted further.

  As shown in FIG. 8 (Modification 1 of the fourth embodiment), a groove portion 12b may be provided on the surface of the horn 12 on the side where the second flange portion 121 abuts as a displacement prevention means. good. Thereby, the direct position shift with respect to the 2nd pipe 120 by the horn 12 can be prevented. Moreover, since the outer peripheral part of the 2nd flange part 121 bites into the joint surface 131 at the time of the first pressurization, the position shift prevention effect is further promoted.

  Moreover, you may make it provide a groove part (133, 12b) in both the anvil 11 and the horn 12. FIG.

(Other embodiments)
In each of the above embodiments, the inclination directions of the inclined portions 11a, 12a, and 132 serving as misalignment prevention means provided on the anvil 11, the horn 12, and the thick pipe 130 may be reversed. For example, in FIG. 1, you may make it the inclination direction of the inclination part 11a become a direction which approaches the horn 12 toward the inner diameter side from the outer diameter side of the anvil 11. FIG. In this case, the first flange portion 111 is deformed and deformed in accordance with the inclined portion having the reverse inclination due to the pressurization of the horn 12, and the position is substantially restrained, so that the positional deviation is prevented.

  Further, since the groove portions (11b, 12b, 133) substantially constrain the outer peripheral portion of the flange portion (111, 121) in the radial direction by fitting, the flange portion does not protrude from the groove portion or in the groove portion. As long as it does not completely enter, the surface of the groove portion that contacts the flange portion is not limited to a flat surface, and may be a curved surface.

  Further, the outer diameters of the first flange portion 111 (joint surface 131) and the second flange portion 121 may be increased on the second flange portion 121 side.

  Moreover, it is good also as a block-shaped member etc. which have a hole part instead of the 1st pipe 110 and the thick pipe 130 as the other party member of the 2nd pipe 120.

It is sectional drawing which shows the ultrasonic bonding apparatus for joining the 1st pipe and 2nd pipe in 1st Embodiment, and forming a joining pipe. It is sectional drawing which shows the ultrasonic bonding apparatus in the modification 1 of 1st Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in 2nd Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in the modification 1 of 2nd Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in 3rd Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in the modification 1 of 3rd Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in 4th Embodiment. It is sectional drawing which shows the ultrasonic bonding apparatus in the modification 1 of 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Ultrasonic bonding apparatus 11 Anvil 11a Inclined part (position shift prevention means)
11b Groove (Position displacement prevention means)
12 Horn 100 Joining pipe 110 First pipe (first tubular member)
111 1st flange part 120 2nd pipe (2nd tubular member)
121 Second flange (flange)
130 Thick pipe (mating member)
131 Bonding surface (outer peripheral surface of hole)
132 Inclined part (positional displacement prevention means)
133 Groove (Position misalignment prevention means)

Claims (16)

The first and second flange portions (111, 121) formed on one end side of each of the first and second tubular members (110, 120) are opposed to each other.
Set the first flange portion (111) on the anvil (11),
An ultrasonic joining method for joining the first and second flange portions (111, 121) by vibrating the second flange portion (121) while applying pressure by a horn (12),
A position in which at least one of the anvil (11) or the horn (12) is prevented from being displaced in the radial direction of at least one of the first flange portion (111) or the second flange portion (121) by setting the shape thereof. An ultrasonic bonding method characterized in that a slip prevention means (11a, 11b) is provided to perform the bonding.   As the shape setting, at least one of the first flange portion (111) or the second flange portion (121) of at least one of the anvil (11) or the horn (12) is brought into contact with the surface on the side where the first flange portion (111) abuts. An inclined portion (11a) that is inclined in the radial direction of at least one of the first flange portion (111) and the second flange portion (121) is provided to serve as the displacement prevention means (11a, 11b). The ultrasonic bonding method according to claim 1.   As the shape setting, at least one of the first flange portion (111) or the second flange portion (121) of at least one of the anvil (11) or the horn (12) is brought into contact with the surface on the side where the first flange portion (111) abuts. The groove portion (11b) into which at least one of the first flange portion (111) or the second flange portion (121) is inserted and fitted is provided as the displacement prevention means (11a, 11b). Item 2. The ultrasonic bonding method according to Item 1.   The outline of either the first flange portion (111) or the second flange portion (121) is formed to be smaller than the other outline, and the anvil (11) and the horn (12) The ultrasonic joining method according to claim 1, wherein the joining is performed by forming an outline larger than the outline of the first and second flange portions (111, 121). . The flange portion (121) formed on one end side of the tubular member (120) is joined to the outer peripheral surface (131) of the hole portion of the counterpart member (130) while being pressed and vibrated by the horn (12). An ultrasonic bonding method,
At least one of the horn (12) or the outer peripheral surface (131) is provided with misalignment prevention means (132, 133) for preventing radial misalignment of the flange portion (121) by setting the shape thereof, An ultrasonic bonding method comprising performing bonding.   As the shape setting, an inclined portion (132) inclined in the radial direction of the outer peripheral surface (131) is provided on the surface of the outer peripheral surface (131) on the side where the flange portion (121) abuts, so The ultrasonic bonding method according to claim 5, wherein the ultrasonic bonding method is a prevention means (132, 133).   As the shape setting, a groove portion (133) into which the flange portion (121) is inserted and fitted is provided on the surface of the outer peripheral surface (131) on the side where the flange portion (121) abuts to prevent the displacement. The ultrasonic bonding method according to claim 5, wherein the ultrasonic bonding method is a means (132, 133).   The outline of either the flange portion (121) or the outer peripheral surface (131) is formed to be smaller than the other outline, and the outline of the horn (12) is formed as the outline of the flange portion (121). The ultrasonic bonding method according to claim 5, wherein the bonding is performed so as to be larger. First and second flange portions (111, 121) formed on one end side of each of the first and second tubular members (110, 120) are arranged to face each other.
An anvil (11) for receiving the first flange portion (111);
An ultrasonic bonding apparatus having a horn (12) that joins both flange portions (111, 121) by vibrating while pressing the second flange portion (121),
At least one of the anvil (11) or the horn (12) is prevented from being displaced in the radial direction of at least one of the first flange portion (111) or the second flange portion (121) by setting its shape. An ultrasonic bonding apparatus provided with misalignment prevention means (11a, 11b).   The misalignment prevention means (11a, 11b) has, as the shape setting, at least one of the first flange portion (111) or the second flange portion (121) of the anvil (11) or the horn (12). At least one of the first flange portion (111) and the second flange portion (112) is provided on a surface on the abutting side and is inclined at least one of the radial portions (11a). The ultrasonic bonding apparatus according to claim 9.   The misalignment prevention means (11a, 11b) has, as the shape setting, at least one of the first flange portion (111) or the second flange portion (121) of the anvil (11) or the horn (12). At least one of the first flange portion (111) and the second flange portion (121) is provided on a surface on a side where at least one of the first flange portion (111) and the second flange portion (121) is inserted and fitted into a groove portion (11b). Item 10. The ultrasonic bonding apparatus according to Item 9. The outline of either the first flange part (111) or the second flange part (121) is formed to be smaller than the other outline,
The outlines of the anvil (11) and the horn (12) are formed to be larger than the outlines of the first and second flange portions (111, 121). 11. The ultrasonic bonding apparatus according to 11. A super horn having a horn (12) joined by vibrating a flange (121) formed on one end of the tubular member (120) against the outer peripheral surface (131) of the hole of the counterpart member (130) while being pressurized. A sonic bonding apparatus,
At least one of the horn (12) or the outer peripheral surface (131) is provided with a misregistration prevention means (132, 133) for preventing the radial misalignment of the flange portion (112) by setting the shape thereof. An ultrasonic bonding apparatus.   The displacement prevention means (132, 133) is provided on the surface of the outer peripheral surface (131) on the side where the flange portion (121) abuts as the shape setting, and is arranged in the radial direction of the outer peripheral surface (131). The ultrasonic bonding apparatus according to claim 13, wherein the inclined portion is an inclined portion.   The displacement prevention means (132, 133) is provided on the surface of the outer peripheral surface (131) on the side where the flange portion (121) abuts as the shape setting, and the flange portion (112) is inserted and fitted. The ultrasonic bonding apparatus according to claim 13, wherein a groove portion (133) is formed. The outline of either the flange portion (121) or the outer peripheral surface (131) is formed to be smaller than the other outline,
The ultrasonic bonding apparatus according to any one of claims 13 to 15, wherein an outline of the horn (12) is formed to be larger than an outline of the flange portion (121).

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