Rapid assembly and disassembly ultrasonic welding head and welding device

Abstract

The utility model relates to the field of ultrasonic welding, and provides a quick assembly and disassembly ultrasonic welding head and a welding device. The welding head comprises a clamping part, a welding part and a resonance groove, the clamping part is used for being fixed in a welding device, and a vibration coupling face and a positioning groove are arranged on the clamping part; the number of the vibration coupling faces is two, and the two vibration coupling faces are arranged on the two parallel side faces of the clamping part respectively. The positioning groove vertically penetrates through the two vibration coupling surfaces; the resonance groove penetrates through the welding head in the direction perpendicular to the two vibration coupling faces. The ultrasonic welding head can be tightly fixed in the welding device in a clamping mode, the repeated positioning precision of the ultrasonic welding head is high, the position does not need to be adjusted again after replacement, the replacement process is simple and rapid, and rapid assembly and disassembly can be achieved; in addition, through specific arrangement of the resonant tank, the vibration mode of the ultrasonic welding head is optimized, and the welding quality is improved; the utility model further provides a direct pressing type welding device which is high in welding efficiency and precision.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic welding, and more specifically, to a quick-loading and unloading ultrasonic welding head and a welding device. Background Art

[0002] Ultrasonic metal welding is a special method that uses the mechanical vibration energy of ultrasonic frequency to connect the same metal or dissimilar metals. The ultrasonic welding head is one of the important components of the ultrasonic metal welding device. In actual use, the ultrasonic welding head needs to be frequently replaced, such as replacing different welding heads according to the needs of different welding processes. In addition, since the ultrasonic welding head is a consumable part, it also needs to be frequently replaced.

[0003] At present, conventional ultrasonic welding heads are provided with connection threads for fastening through a threaded structure. Therefore, conventional ultrasonic welding heads need to be loaded and unloaded by means of multiple turns of helix, which is time-consuming and laborious. In addition, during installation, the torque of the helix will directly affect the final positioning of the ultrasonic welding head, and each installation requires a long time to re-calibrate and position, and the installation repeat accuracy is poor. Therefore, a new type of ultrasonic welding head is needed to solve the problems of time-consuming and laborious loading and unloading and poor installation repeat accuracy in replacing the ultrasonic welding head in the prior art. Summary of the Utility Model

[0004] The purpose of this application is to provide a quick-loading and unloading ultrasonic welding head and a welding device.

[0005] The embodiments of this application can be realized by the following technical solutions:

[0006] A quick-loading and unloading ultrasonic welding head includes a clamping part located at the upper part, a welding part located at the lower part, and a resonance groove located in the middle; the clamping part is used to be fixed in the welding device, and the clamping part is provided with a vibration coupling surface and a positioning groove; the number of the vibration coupling surfaces is two, which are respectively arranged on two mutually parallel side surfaces of the clamping part, and the side surface is parallel to the axis of the ultrasonic welding head; the positioning groove vertically penetrates through the two vibration coupling surfaces; the resonance groove penetrates through the ultrasonic welding head in a direction perpendicular to the two vibration coupling surfaces.

[0007] Furthermore, the number of the resonance grooves is one or more, and is symmetrically distributed with respect to the axis of the ultrasonic welding head; the number of the positioning grooves is one or more, and is symmetrically distributed with respect to the axis of the ultrasonic welding head.

[0008] Furthermore, the resonance groove is an open groove structure or a closed groove structure; the positioning groove is an open groove structure or a closed groove structure.

[0009] Further, the cross-section of the resonant groove along the axial direction of the welding head is any one or a combination of a circle, an oval, and a rectangle; the cross-section of the positioning groove along the axial direction of the welding head is any one or a combination of a circle, an oval, and a rectangle.

[0010] Further, the clamping portion is of a cuboid structure.

[0011] Further, a plurality of raised welding lines are provided on the bottom surface of the welding portion.

[0012] A welding device includes a vibration transmission horn, a welding head resonance fixture, a resonance rod, an ultrasonic transducer, a fastening connection stud, and the ultrasonic welding head according to any one of the above; the welding head resonance fixture includes a first chuck and a second chuck, which together form a clamping opening for accommodating the clamping portion, and the two vibration coupling surfaces of the clamping portion are respectively in contact with the inner side surfaces of the clamping opening; one end of the fastening connection stud is connected to the second end portion of the vibration transmission horn, and the other end sequentially passes through the second chuck, the positioning groove, the first chuck and is connected to the resonance rod; the ultrasonic transducer is connected to the first end portion of the vibration transmission horn, and transmits ultrasonic vibration to the ultrasonic welding head through the vibration transmission horn.

[0013] A welding device includes a vibration transmission horn, a welding head resonance fixture, an ultrasonic transducer, a fastening connection bolt, and the ultrasonic welding head according to any one of the above; the welding head resonance fixture includes a first chuck and a second chuck, which together form a clamping opening for accommodating the clamping portion, and the two vibration coupling surfaces of the clamping portion are respectively in contact with the inner side surfaces of the clamping opening; the screw end of the fastening connection bolt sequentially passes through the first chuck, the positioning groove, the second chuck and is connected to the second end portion of the vibration transmission horn; the ultrasonic transducer is connected to the first end portion of the vibration transmission horn, and transmits ultrasonic vibration to the ultrasonic welding head through the vibration transmission horn.

[0014] A welding device includes a vibration transmission horn, a welding head resonance fixture, an ultrasonic transducer, a fastening connection stud, and the ultrasonic welding head according to any one of the above; the welding head resonance fixture includes a first chuck, and the first chuck and the second end portion of the vibration transmission horn together form a clamping opening for accommodating the clamping portion, and the two vibration coupling surfaces of the clamping portion are respectively in contact with the inner side surfaces of the clamping opening; one end of the fastening connection stud is connected to the second end portion of the vibration transmission horn, and the other end passes through the positioning groove and is connected to the first chuck. The ultrasonic transducer is connected to the first end portion of the vibration transmission horn, and transmits ultrasonic vibration to the ultrasonic welding head through the vibration transmission horn.

[0015] A welding device includes a vibration transmitting horn, a welding head resonance fixture, a resonance rod, an ultrasonic transducer, a fastening connection stud, and the ultrasonic welding head described in any one of the above; the welding head resonance fixture includes a first chuck, and the first chuck and the second end of the vibration transmitting horn jointly form a clamping opening for accommodating a clamping portion, and two vibration coupling surfaces of the clamping portion are respectively abutted against the inner side surfaces of the clamping opening; one end of the fastening connection stud is connected to the second end of the vibration transmitting horn, and the other end sequentially passes through a positioning groove and the first chuck and is connected to the resonance rod; the ultrasonic transducer is connected to the first end of the vibration transmitting horn, and transmits ultrasonic vibration to the ultrasonic welding head through the vibration transmitting horn.

[0016] The quick - loading and unloading ultrasonic welding head and welding device provided by the embodiments of the present application at least have the following beneficial effects:

[0017] 1. The ultrasonic welding head provided by the present utility model changes the existing threaded connection method, and is clamped and fixed in the welding device. Compared with the repeated positioning accuracy of the existing threaded structure for clamping and fixing, it does not require re - calibration of the position after replacement, the replacement process is simple and fast, and quick loading and unloading can be achieved.

[0018] 2. The ultrasonic welding head provided by the present utility model can optimize the vibration mode of the ultrasonic welding head by setting a resonance groove structure, making the vibration amplitude distribution of the welding part more uniform, thereby improving the welding quality.

[0019] 3. The present utility model provides a direct - pressure type welding device, which is composed of the above - mentioned ultrasonic welding head and various components in cooperation. It can simultaneously and efficiently transmit ultrasonic vibration and welding pressure to the ultrasonic welding head, thereby realizing high - efficiency and high - precision ultrasonic welding with a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the welding head in Embodiment 1 of the present application;

[0021] Figure 2 It is the front view and side view of the welding head structure in Embodiment 1 of the present application;

[0022] Figure 3 It is a schematic diagram of the structure of the welding device in Embodiment 1 of the present application;

[0023] Figure 4 It is the front view and side view of the welding head structure in Embodiment 2 of the present application;

[0024] Figure 5 It is a schematic diagram of the structure of the welding device in Embodiment 2 of the present application;

[0025] Figure 6 It is the front view and side view of the welding head structure in Embodiment 3 of the present application;

[0026] Figure 7 Structural schematic diagram of the welding device according to Embodiment 3 of the present application;

[0027] Figure 8 Front view and side view of the welding head structure according to Embodiment 4 of the present application;

[0028] Figure 9 Structural schematic diagram of the welding device according to Embodiment 4 of the present application;

[0029] Reference numerals in the figure

[0030] Ultrasonic welding head 1, clamping portion 11, welding portion 12, positioning groove 13, resonance groove 14, vibration coupling surface 15, vibration transmission horn 2, resonance rod 3, welding head resonance fixture 4, first chuck 41, second chuck 42, ultrasonic transducer 5, fastener 6. Detailed implementation manners

[0031] Hereinafter, the present application will be further described based on preferred implementation manners with reference to the accompanying drawings.

[0032] In addition, for the convenience of understanding, various components in the drawings are enlarged or reduced, but this is not intended to limit the protection scope of the present application.

[0033] Singular forms of words also include plural meanings, and vice versa.

[0034] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the products in the embodiments of the present application are normally placed. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application. In addition, in the description of the present application, in order to distinguish different units, the first, second, etc. are used in this specification, but these are not limited by the manufacturing sequence and cannot be understood as indicating or implying relative importance. In the detailed description and claims of the present application, their names may be different.

[0035] The terms used in this specification are for the purpose of describing the embodiments of the present application, but are not intended to limit the present application. It should also be noted that unless otherwise clearly specified and defined, if terms such as "arranged", "connected", "coupled" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be specifically understood.

[0036] The present application provides a quick - loading and unloading ultrasonic welding head and a welding device. Figures 1-9 Structures of ultrasonic welding heads provided by different specific embodiments and welding devices equipped with such ultrasonic welding heads are respectively shown. The content of the present application will be elaborated through specific embodiments below.

[0037] Embodiment 1

[0038] Figure 1 and Figure 2 Overall structural schematic diagram, front view and side view of the ultrasonic welding head structure of Embodiment 1 of the present application are respectively shown. It can be seen from the figure that the ultrasonic welding head 1 includes a clamping part 11 located at the upper part, a welding part 12 located at the lower part, and a resonance groove 14 located in the middle part. Among them, the clamping part 11 is used to connect with other components in the welding device to fix the ultrasonic welding head 1 in the welding device. The resonance groove 14 is used to change the vibration mode of the ultrasonic welding head 1, making the vibration amplitude distribution of the welding part 12 more uniform, thereby improving the welding quality. A welding point is provided at the bottom end of the welding part 12, which presses against the welding workpiece during welding.

[0039] Further, a positioning groove 13 and vibration coupling surfaces 15 are provided on the clamping part 11. The number of the vibration coupling surfaces 15 is two, and the two vibration coupling surfaces 15 are parallel to each other and are respectively arranged on two side surfaces parallel to the axis of the ultrasonic welding head 1. During use, the two vibration coupling surfaces 15 are respectively abutted against other components in the welding device for transmitting ultrasonic vibration. Further, the positioning groove 13 vertically penetrates the two vibration coupling surfaces 15, which is used as a positioning reference during assembly and provides space for avoiding fasteners 6. Specifically, the number of the positioning grooves 13 is 1, which is an open U - shaped groove structure, that is, the cross - section of the positioning groove 13 along the axis direction of the ultrasonic welding head 1 is U - shaped, and this U - shaped cross - section is a combination of a rectangle and a circle. Further, this cross - section is symmetrical with respect to the axis of the ultrasonic welding head 1.

[0040] Further, the clamping part 11 is of a cuboid structure.

[0041] Further, the resonance groove 14 is located at the lower end of the positioning groove 13 and penetrates the ultrasonic welding head 1 along a direction perpendicular to the two vibration coupling surfaces 15. Specifically, the number of the resonance grooves 14 is 1, which is an open U - shaped groove structure, that is, the resonance groove 14 is communicated with the upper positioning groove 13, and the open groove design makes the processing and manufacturing simpler.

[0042] Further, several raised tooth - shaped welding lines are provided on the bottom surface of the welding part 12 in this embodiment to increase friction and prevent the welding part 12 from slipping relative to the welding workpiece due to ultrasonic vibration during welding. Optionally, in some other embodiments, the welding lines can also be raised dot - shaped structures, pattern structures or frosted structures.

[0043] This embodiment also provides a welding device, as Figure 3 shown, which includes the above ultrasonic welding head 1, vibration transmission horn 2, resonance rod 3, welding head resonance fixture 4, ultrasonic transducer 5 and fastener 6.

[0044] Further, the welding head resonance fixture 4 is arranged above the ultrasonic welding head 1. The lower part of the welding head resonance fixture 4 is provided with a first chuck 41 and a second chuck 42 which are mirror-symmetrically arranged. The two together form a clamping opening adapted to the clamping part 11. During use, the clamping part 11 is located between the first chuck 41 and the second chuck 42, and the two vibration coupling surfaces 15 of the clamping part 11 are respectively abutted against the inner side surfaces of the clamping opening.

[0045] Further, a first through hole and a second through hole are respectively provided on the first chuck 41 and the second chuck 42. The numbers of the first through hole and the second through hole are the same as the number of the positioning grooves 13. The first through hole and the second through hole penetrate through the first chuck 41 and the second chuck 42 respectively along the direction perpendicular to the inner side surface of the clamping opening, and are used to cooperate with the positioning grooves 13 to provide a positioning reference for the ultrasonic welding head 1 and provide a space for the fastener 6 to avoid.

[0046] Specifically, in this embodiment, the fastener 6 is a fastening connection stud. One end of it sequentially passes through the first through hole on the first chuck 41, the positioning groove 13, the second through hole on the second chuck 42 and is threadedly connected to the second end part, i.e., the output end, of the vibration transmission horn 2, and the other end is threadedly connected to the resonance rod 3. That is, the two outer side surfaces of the clamping opening are respectively abutted against the resonance rod 3 and the output end of the vibration transmission horn 2, and the clamping part 11 is fixed between the first chuck 41 and the second chuck 42 by the clamping forces provided on both sides;

[0047] Preferably, the fastening connection stud is coaxially arranged with the vibration transmission horn 2 and the resonance rod 3.

[0048] Further, the ultrasonic transducer 5 is arranged at the first end part of the vibration transmission horn 2 away from the welding head 1. That is, the output end of the ultrasonic transducer 5 is connected to the input end of the vibration transmission horn 2. The ultrasonic transducer 5 transmits ultrasonic vibration to the ultrasonic welding head 1 through the vibration transmission horn 2 to achieve ultrasonic welding.

[0049] Embodiment 2

[0050] Figure 4 Shows a structure of an ultrasonic welding head provided by Embodiment 2 of the present application. Its basic structure is the same as that of the above Embodiment 1, and the difference lies only in the number and structure of the positioning grooves 13 and the resonance grooves 14.

[0051] Specifically, in Embodiment 2, the number of positioning grooves 13 is two, which are two closed circular notch structures symmetrically arranged with respect to the axis of the ultrasonic welding head 1. The setting of multiple numbers can further increase the connection stability, and the use of closed notches has better structural strength; in Embodiment 2, the number of resonance grooves 14 is one, which is a closed oblong notch structure symmetrically arranged with respect to the axis of the ultrasonic welding head 1.

[0052] Figure 5 Fig. shows the structure of a welding device equipped with the ultrasonic welding head 1 of Embodiment 2. The difference from the welding device described in Embodiment 1 is that the welding device in this embodiment does not contain a resonance rod 3. Although the resonance rod 3 is used to assist in clamping the ultrasonic welding head 1 and can improve the efficiency of the ultrasonic welding head 1 receiving ultrasonic vibration, the resonance rod 3 is large in volume and will be in the way in some welding working conditions, affecting the effective welding space. In this Embodiment 2, the stable clamping of the ultrasonic welding head 1 and the efficient reception of ultrasonic vibration can be achieved without setting the resonance rod 3, further simplifying the device, increasing the effective welding space, and expanding the application working condition range.

[0053] Further, the fastener 6 in this embodiment is specifically a fastening connection bolt, and its screw end sequentially passes through the first through hole, the positioning groove 13, the second through hole and is threadedly connected to the output end of the vibration transmission horn 2. The clamping force provided by the fastening connection bolt fixes the clamping portion 11 of the ultrasonic welding head 1 between the jaws formed by the first chuck 41 and the second chuck 42.

[0054] Embodiment 3

[0055] Figure 6 Fig. shows the structure of an ultrasonic welding head provided in Embodiment 3 of the present application. Its basic structure is the same as that of the above Embodiment 1, and the difference lies only in the structures of the positioning groove 13 and the resonance groove 14.

[0056] Specifically, in Embodiment 3, the number of positioning grooves 13 is one, which is a closed circular notch structure symmetrically arranged with respect to the axis of the welding head 1; in Embodiment 3, the number of resonance grooves 14 is one, which is a combined notch structure of a closed rectangle and a circle symmetrically arranged with respect to the axis of the welding head 1.

[0057] Figure 7 Fig. shows the structure of a welding device equipped with the ultrasonic welding head provided in Embodiment 3, which includes an ultrasonic welding head 1, a vibration transmission horn 2, a welding head resonance fixture 4, an ultrasonic transducer 5 and a fastener 6; the welding head resonance fixture 4 is arranged above the ultrasonic welding head 1, and a first chuck 41 is arranged at the lower part of the welding head resonance fixture 4. The first chuck 41 and the second end portion, i.e., the output end, of the vibration transmission horn 2 together form a jaw adapted to the clamping portion 11. During use, the two vibration coupling surfaces 15 of the clamping portion 11 are respectively abutted against the inner side surfaces of the jaw.

[0058] Further, the first chuck 41 is provided with first through holes equal in number to the positioning grooves 13, and the first through holes penetrate the first chuck 41 in a direction perpendicular to the inner side surface of the chuck opening; further, the inner surface of the first through hole is provided with threads for connecting with the fastener 6.

[0059] Specifically, in this embodiment, the fastener 6 is a fastening connecting stud, one end of which is threadedly connected to the second end, i.e., the output end, of the vibration transmission amplitude transformer 2, and the other end passes through the positioning groove 13 and is threadedly connected to the first through hole, so as to fix the clamping portion 11 between the first chuck 41 and the output end of the vibration transmission amplitude transformer 2 by providing a clamping force.

[0060] Further, the ultrasonic transducer 5 is disposed at the first end of the vibration transmission amplitude transformer 2 away from the welding head 1, that is, the output end of the ultrasonic transducer 5 is connected to the input end of the vibration transmission amplitude transformer 2, and the ultrasonic transducer 5 transmits ultrasonic vibration to the ultrasonic welding head 1 through the vibration transmission amplitude transformer 2 to achieve ultrasonic welding.

[0061] Embodiment 4

[0062] Figure 8 Fig. shows a structure of an ultrasonic welding head provided in Embodiment 4 of the present application, whose basic structure is the same as that of Embodiment 1 above, and the difference lies only in the number and structure of the positioning grooves 13 and the resonance grooves 14.

[0063] Specifically, in Embodiment 4, the number of the positioning grooves 13 is 2, which are two open U-shaped notch structures symmetrically arranged with respect to the axis of the welding head 1; the number of the resonance grooves 14 in Embodiment 4 is 2, which are closed oval notch structures symmetrically arranged with respect to the axis of the welding head 1.

[0064] Figure 9 Fig. shows a schematic structural diagram of a welding device equipped with the ultrasonic welding head provided in Embodiment 4, which adds a resonance rod 3 on the basis of Embodiment 3 above. The number of the resonance rods 3 is the same as the number of the positioning grooves 13 to further enhance the stable clamping of the ultrasonic welding head 1 and the ultrasonic vibration receiving efficiency; specifically, the resonance rod 3 is disposed on the outer side surface of the first chuck 41.

[0065] Specifically, the fastener 6 is a fastening connecting stud, the number of which is the same as the number of the positioning grooves 13. One end of the fastening connecting stud is threadedly connected to the second end, i.e., the output end, of the vibration transmission amplitude transformer 2, and the other end sequentially passes through the positioning groove 13 and the first through hole and is threadedly connected to the resonance rod 3, so as to fix the clamping portion 11 between the first chuck 41 and the output end of the vibration transmission amplitude transformer 2 by the clamping forces provided on both sides; preferably, the resonance rod 3 and the fastener 6 are coaxially arranged.

[0066] It should be noted that the ultrasonic welding head and the welding device equipped with it in the above embodiments are some preferred assembly embodiments, and the protection scope of this application should not be limited thereby. That is, the welding heads in the above embodiments and the welding devices in other embodiments can be used in cooperation with each other.

[0067] Further, in some other specific embodiments of this application, the number of the positioning grooves 13 can be set to one or more;

[0068] Further, in some other specific embodiments of this application, the cross-section of the positioning groove 13 along the axial direction of the ultrasonic welding head 1 can be any one or a combination of a circle, an oblong, and a rectangle. It can be imagined that it can also be other shapes that are convenient for tight fixation and positioning;

[0069] Further, in some other specific embodiments of this application, the number of the resonance grooves 14 can be set to one or more;

[0070] Further, in some other specific embodiments of this application, the cross-section of the resonance groove 14 along the axial direction of the ultrasonic welding head 1 can be any one or a combination of a circle, an oblong, and a rectangle; the setting of the number and shape can be determined according to the actual situation for the purpose of achieving a better vibration amplitude distribution of the welding part.

[0071] The specific implementation manners of this application have been introduced in detail above. For those skilled in the art of this technology, without departing from the principle of this application, several improvements and modifications can still be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A quick-loading and disassembly ultrasonic welding head, characterized in that: It comprises a clamping portion (11) located at the upper part, a welding portion (12) located at the lower part, and a resonance groove (14) located in the middle part; The clamping portion (11) is used to be fixed in a welding device, and the clamping portion (11) is provided with a vibration coupling surface (15) and a positioning groove (13); The number of the vibration coupling surfaces (15) is two, which are respectively arranged on two mutually parallel side surfaces of the clamping portion (11), and the side surfaces are parallel to the axis of the ultrasonic welding head (1); the positioning groove (13) vertically penetrates the two vibration coupling surfaces (15); The resonance groove (14) penetrates the ultrasonic welding head (1) in a direction perpendicular to the two vibration coupling surfaces (15).

2. The quick-loading and disassembly ultrasonic welding head according to claim 1, characterized in that: The number of the resonant slots (14) is one or more, and they are symmetrically distributed relative to the axis of the ultrasonic welding head (1); The number of the positioning grooves (13) is one or more, and they are symmetrically distributed relative to the axis of the ultrasonic welding head (1).

3. The quick-loading and disassembly ultrasonic welding head according to claim 1, characterized in that: The resonance slot (14) is an open slot structure or a closed slot structure; The positioning groove (13) is an open groove structure or a closed groove structure.

4. The quick-loading and disassembly ultrasonic welding head according to claim 1, characterized in that: The cross section of the resonance groove (14) along the axial direction of the ultrasonic welding head (1) is any one of a circle, an oblong, and a rectangle, or a combination thereof; The cross section of the positioning groove (13) along the axial direction of the ultrasonic welding head (1) is any one of a circle, an oblong, and a rectangle, or a combination thereof.

5. The quick-loading and disassembly ultrasonic welding head according to claim 1, characterized in that: The clamping portion (11) is a rectangular parallelepiped structure.

6. The quick-loading and disassembly ultrasonic welding head according to claim 1, characterized in that: The bottom surface of the welding portion (12) is provided with a plurality of raised welding marks.

7. A welding device, characterized in that: It comprises a vibration transmission horn (2), a welding head resonance fixture (4), a resonance rod (3), an ultrasonic transducer (5), a fastening connection stud and an ultrasonic welding head (1) as claimed in any one of claims 1 to 6; The welding head resonance clamp (4) comprises a first clamp (41) and a second clamp (42), which together form a clamping opening for accommodating the clamping portion (11), and the two vibration coupling surfaces (15) of the clamping portion (11) are respectively in contact with the inner side surfaces of the clamping opening; One end of the fastening stud is connected to the second end of the vibration transmission horn (2), and the other end passes through the second clamp (42), the positioning groove (13), the first clamp (41) and is connected to the resonance rod (3) in sequence; The ultrasonic transducer (5) is connected to the first end of the vibration transmission horn (2), and transmits ultrasonic vibration to the ultrasonic welding head (1) through the vibration transmission horn (2).

8. A welding device, characterized in that: It comprises a vibration transmission horn (2), a welding head resonance fixture (4), an ultrasonic transducer (5), fastening connecting bolts and an ultrasonic welding head (1) as claimed in any one of claims 1 to 6; The welding head resonance clamp (4) comprises a first clamp (41) and a second clamp (42), which together form a clamping opening for accommodating the clamping portion (11), and the two vibration coupling surfaces (15) of the clamping portion (11) are respectively in contact with the inner side surfaces of the clamping opening; The screw end of the fastening connection bolt passes through the first clamp (41), the positioning groove (13), the second clamp (42) in sequence and is connected to the second end of the vibration transmission horn (2); The ultrasonic transducer (5) is connected to the first end of the vibration transmission horn (2), and transmits ultrasonic vibration to the ultrasonic welding head (1) through the vibration transmission horn (2).

9. A welding device, characterized in that: It comprises a vibration transmission horn (2), a welding head resonance fixture (4), an ultrasonic transducer (5), a fastening connection stud, and an ultrasonic welding head (1) as claimed in any one of claims 1 to 6; The welding head resonance clamp (4) comprises a first clamp (41), wherein the first clamp (41) and the second end of the vibration transmission and amplitude change rod (2) together form a clamping opening for accommodating the clamping portion (11), and the two vibration coupling surfaces (15) of the clamping portion (11) are respectively in contact with the inner side surface of the clamping opening; One end of the fastening stud is connected to the second end of the vibration transmission horn (2), and the other end passes through the positioning groove (13) and is connected to the first clamp (41); The ultrasonic transducer (5) is connected to the first end of the vibration transmission horn (2), and transmits ultrasonic vibration to the ultrasonic welding head (1) through the vibration transmission horn (2).

10. A welding device, characterized in that: It comprises a vibration transmission horn (2), a welding head resonance fixture (4), a resonance rod (3), an ultrasonic transducer (5), a fastening connection stud and an ultrasonic welding head (1) as claimed in any one of claims 1 to 6; The welding head resonance clamp (4) comprises a first clamp (41), wherein the first clamp (41) and the second end of the vibration transmission and amplitude change rod (2) together form a clamping opening for accommodating the clamping portion (11), and the two vibration coupling surfaces (15) of the clamping portion (11) are respectively in contact with the inner side surface of the clamping opening; One end of the fastening stud is connected to the second end of the vibration transmission horn (2), and the other end passes through the positioning groove (13) and the first clamp (41) in sequence to be connected to the resonance rod (3); The ultrasonic transducer (5) is connected to the first end of the vibration transmission horn (2), and transmits ultrasonic vibration to the ultrasonic welding head (1) through the vibration transmission horn (2).

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