Ultrasonic high-positioning full-wave welding head

Abstract

The application discloses an ultrasonic high-avoidance full-wave welding head, relates to the field of ultrasonic metal welding, and comprises a mounting shaft for welding head mounting, a pair of welding arms for workpiece welding avoidance is connected to the middle position of the mounting shaft, and the pair of welding arms is symmetrically arranged on the mounting shaft; a transition section is arranged at the connection position of the welding arm and the mounting shaft; a full-wave welding head body is connected to the end of the welding arm away from the mounting shaft; a welding tooth is arranged at the end of the full-wave welding head body away from the welding arm; a plurality of support positions are arranged on the surface of the mounting shaft; and the welding arm is located between the support positions. The application is combined with the structure of "avoidance + symmetry + stability", solves the welding interference problem of complex workpieces, guarantees the welding precision and stability under high-frequency vibration, has certain scene adaptability, and can be widely applied to the fields of electronic components, plastic assemblies, wire harness terminals and the like which require high-precision and interference-free welding, and has the advantages of practicability and durability.

Description

Technical Field

[0001] This application relates to the technical field of ultrasonic metal welding, and in particular to an ultrasonic high-avoidance full-wave welding head. Background Technology

[0002] Ultrasonic welding, as a highly efficient and environmentally friendly joining technology, is widely used in joining materials such as plastics and metals. With the increasing complexity of industrial product designs and the diversification of workpiece structures, such as the growing number of workpieces with protrusions, grooves, or irregular shapes, traditional ultrasonic welding heads, due to structural limitations, struggle to meet the welding requirements of these complex workpieces. They are also prone to collisions or scratches with non-welding areas during the welding process, affecting welding accuracy and quality.

[0003] In existing technologies, welding heads are usually integrated. When performing ultrasonic welding on workpieces with protrusions, grooves, or irregular structures, existing general-purpose ultrasonic welding heads are typically used. However, during the welding process between a general-purpose ultrasonic welding head and a workpiece with protrusions, grooves, or irregular structures, the protrusions, grooves, or irregular structures on the workpiece will come into contact with the welding head, interfering with the welding process. This can cause the welding head to collide with non-welding areas, damaging the welding head and thus affecting the welding quality and precision of the workpiece. Utility Model Content

[0004] In view of the above-mentioned prior art, in order to solve the problem that when using a general ultrasonic welding head to weld with workpieces with protrusions, grooves or irregular structures, the protrusions, grooves or irregular structures on the workpiece will come into contact with the welding head, causing interference between the welding head and the workpiece, causing the welding head to collide with non-welding areas and damage the welding head, thereby affecting the welding quality and accuracy of the workpiece, this application provides an ultrasonic high-avoidance full-wave welding head.

[0005] This application provides an ultrasonic high-avoidance full-wave welding head, which adopts the following technical solution: An ultrasonic high-avoidance full-wave welding head includes a mounting shaft for mounting the welding head. A pair of welding arms for workpiece welding avoidance are connected to the middle of the mounting shaft, and the pair of welding arms are symmetrically arranged on the mounting shaft. A transition section is provided at the connection between the welding arm and the mounting shaft. The end of the welding arm away from the mounting shaft is connected to the full-wave welding head body. The end of the full-wave welding head body away from the welding arm is provided with welding teeth. Multiple sets of support positions are provided on the surface of the mounting shaft. The welding arm is located between the support positions, and the distance from the support position to the welding arm is equal.

[0006] By adopting the above technical solution, the welding arm is positioned in the middle of the mounting shaft, providing a clearance area between the full-wave welding head and the mounting shaft. This prevents the welding head from colliding or scraping against the non-welding area of ​​the workpiece during high-frequency vibration welding, ensuring that the welding action is precisely applied to the target position. At the same time, the welding arms are symmetrically positioned on the mounting shaft, and the clearance space on both sides of the full-wave welding head is completely balanced. Whether the workpiece requires clearance on one side or simultaneous welding on both sides, the clearance effect is consistent, reducing welding deviations caused by insufficient space on one side. Furthermore, the multiple sets of support positions on the surface of the mounting shaft can serve as stable support points for the welding head and the equipment. On the one hand, this fixes the working posture of the welding head, preventing the welding head from shifting due to vibration during welding. On the other hand, it can transfer some vibration energy to the equipment frame, reducing unnecessary vibration of the welding head itself and further ensuring welding accuracy.

[0007] Preferably, the length of the welding arm is in the range of 40-80mm, and the mounting shaft is integrally formed with the welding arm, with the central axis of the welding arm being perpendicular to the central axis of the mounting shaft.

[0008] By adopting the above technical solution, the mounting shaft and welding arm are designed as a single piece without any additional connection interface. Vibration energy can be directly and losslessly transmitted to the welding arm along the continuous metal material. The welding arm is perpendicular to the central axis of the mounting shaft and its length is controlled between 40-80mm, so that the body of the full-wave welding head extends radially outward along the mounting shaft to form sufficient axial clearance space.

[0009] Preferably, the mounting shaft is configured as two segments, the welding arm is disposed between the two segments of the mounting shaft, and the welding arm is detachably connected to the two segments of the mounting shaft, and the two welding arms are integrally formed.

[0010] By adopting the above technical solution, through the segmented mounting shaft and detachable welding arm, it is possible to adapt to workpieces of different sizes and different symmetrical welding points by replacing the integrated welding arm of different specifications, without the need to customize the entire welding head, thus reducing the investment cost of multi-variety production equipment. At the same time, when the welding arm or the full-wave welding head body is worn or damaged, only the welding arm assembly needs to be disassembled and replaced, without replacing the entire mounting shaft, thus reducing spare parts costs and downtime maintenance time.

[0011] Preferably, the mounting shaft includes a first connecting section, a welding head connecting section, and a second connecting section. Both the first connecting section and the second connecting section are connected and fixed to the welding head connecting section by threads. The welding arm is integrally formed and connected to the welding head connecting section on the mounting shaft.

[0012] By adopting the above technical solution, the first and second connecting sections are universal interface sections, and the welding head connecting section is a replaceable functional section. Different specifications of welding head connecting sections can be quickly replaced according to the welding spacing and avoidance requirements of the workpiece, adapting to multi-variety production, reducing equipment investment costs. The welding arm and welding head connecting section are integrally formed without additional connecting structures to block the flow. The 40-80mm radial extension can avoid complex workpieces with deeper cavities and multiple interference structures.

[0013] Preferably, the surface of the welding head connecting section of the mounting shaft is provided with a flat part for workpiece avoidance, and the flat part is located in the middle of the welding head connecting section on the mounting shaft.

[0014] By adopting the above technical solution, the "flat position" on the welding head connection section of the mounting shaft is essentially achieved by "local flattening" to process the central area of ​​the cylindrical surface into a plane or a gently curved surface, forming a "recessed space" in the middle of the welding head connection section of the mounting shaft. This provides clearance space for the non-welding areas on both sides of the workpiece, avoiding workpiece displacement caused by unilateral clearance, and at the same time avoiding rigid collision between the workpiece and the welding head connection section during the welding process.

[0015] Preferably, both ends of the mounting shaft away from the welding arm are provided with fixing screws for connecting the balancer or ultrasonic frequency tuner and generator, and the fixing screws are detachably connected to the mounting shaft.

[0016] By adopting the above technical solution, the detachable fixing screws at both ends of the mounting shaft serve as standardized connection interfaces. One end is connected to the balancer via the fixing screw, allowing the balancer to offset the weight of the welding head itself through mechanical tension or support force, thus maintaining axial force balance of the welding head during operation and avoiding vibration deviation or welding pressure deviation caused by weight. The other end is connected to the ultrasonic frequency tuner / generator via the fixing screw, ensuring a stable transmission path of ultrasonic energy from the generator → frequency tuner → mounting shaft, with no energy loss due to loose connections.

[0017] Preferably, the fixing screw is provided with an elastic washer, and the elastic washer is located between the mounting shaft and the frequency tuner or balancer.

[0018] By adopting the above technical solution and setting elastic shims, the elasticity of the shims can automatically compensate for unevenness of the mounting surface or assembly errors, ensuring that the welding head and equipment components always maintain a tight fit, avoiding vibration offset or energy emission caused by gaps, and ensuring the stability of ultrasonic energy transmission. At the same time, in the high-frequency ultrasonic vibration environment, the elastic shims can absorb vibration energy through their own elastic expansion and contraction, reducing the rigid impact between the welding head and the frequency tuner or balancer, and reducing vibration transmission loss.

[0019] Preferably, the welding head arm, the full-wave welding head body, and the welding teeth are arranged in the same direction on the mounting shaft, and the welding head arm, the full-wave welding head body, and the welding teeth are arranged horizontally or vertically on the mounting shaft.

[0020] By adopting the above technical solutions, the consistent direction ensures efficient transmission of ultrasonic energy, providing a stable guarantee for welding quality; the dual horizontal / vertical setting frees the welding head from the limitation of installation direction, and can be adapted to different equipment layouts and workpiece shapes, greatly reducing the cost for enterprises to customize multiple specifications of welding heads due to "scenario differences".

[0021] Preferably, the welding teeth can be selected as circular teeth, conical teeth, electrical discharge etching teeth, rectangular teeth, inverted teeth, or elliptical teeth.

[0022] By adopting the above technical solutions, a variety of tooth patterns are available, including round, conical, electrical discharge etching, rectangular, inverted, and elliptical, which can be flexibly matched according to different metal materials, thicknesses, and welding requirements to meet the needs of diverse welding scenarios.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. This welding head, through a combination of "avoidance + symmetry + stability" structure, not only solves the welding interference problem of complex workpieces, but also ensures welding accuracy and stability under high-frequency vibration. It also has a certain degree of scene adaptability and can be widely used in fields such as electronic components, plastic components, and wire harness terminals that require high-precision, interference-free welding, taking into account both practicality and durability. 2. By setting the length of the welding arm between 40-80mm, the welding arm can drive the full-wave welding head body to maintain a reasonable distance from the mounting shaft. This avoids common protrusions and clips on the workpiece, and prevents the welding head from being suspended too far due to excessive welding arm length, which would affect operational stability. This allows the welding arm to be selected and designed according to the actual welding needs. 3. By using the "flat position in the middle of the mounting shaft" design, the "spatial interference problem between complex workpieces and the mounting shaft" is precisely solved without "weakening structural performance". At the same time, the workpiece positioning process is simplified, it is compatible with automated production scenarios, and the application range of the welding head is further expanded. 4. With a segmented mounting shaft and a detachable welding arm, it is possible to adapt to workpieces of different sizes and with different symmetrical welding points by replacing the integrated welding arm of different specifications. There is no need to customize the entire welding head, which reduces the investment cost of multi-variety production equipment. At the same time, when the welding arm or the full-wave welding head body is worn or damaged, only the welding arm assembly needs to be disassembled and replaced, without replacing the entire mounting shaft, reducing spare parts costs and downtime maintenance time. Attached Figure Description

[0024] Figure 1This is a schematic diagram of the welding head and equipment installation structure; Figure 2 This is a three-dimensional schematic diagram of the integrated structure of the ultrasonic high-avoidance full-wave welding head; Figure 3 This is a schematic diagram of the split two-section structure of the ultrasonic high-avoidance full-wave welding head. Figure 4 yes Figure 3 A frontal sectional perspective of a three-dimensional view; Figure 5 This is a three-dimensional structural diagram of a split-section ultrasonic high-avoidance full-wave welding head; Figure 6 This is a schematic diagram of the installation and assembly structure of the ultrasonic high-avoidance full-wave welding head, equipment fixture, ultrasonic frequency modulator, and generator. Figure 7 It is a 3D diagram showing the connection between the ultrasonic high-avoidance full-wave welding head and the balancer and frequency modulator. Figure 8 These are three-dimensional diagrams of different forms of ultrasonic high-avoidance full-wave welding heads.

[0025] Reference numerals: 1. Mounting shaft; 1-1. First connecting section; 1-2. Welding head connecting section; 1-3. Second connecting section; 1-4. Flat part; 2. Welding arm; 3. Transition section; 4. Full-wave welding head body; 5. Welding teeth; 6. Support position; 7. Fixing screw; 8. Elastic washer. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail.

[0027] This application discloses an ultrasonic high-avoidance full-wave welding head.

[0028] Reference Figure 1 and Figure 2An ultrasonic high-avoidance full-wave welding head includes a mounting shaft 1 for mounting the welding head to the equipment. A pair of welding arms 2 are fixedly connected to the middle of the mounting shaft 1. The welding arms 2 are used for workpiece avoidance during welding, and the pair of welding arms 2 are symmetrically arranged on the mounting shaft 1, making the welding arms 2 symmetrical about the central axis of the mounting shaft 1. This means that the avoidance space on both sides of the welding head body is completely balanced. Whether the workpiece needs avoidance on one side or simultaneous welding on both sides, the avoidance effect can be guaranteed to be uniform, reducing welding deviation caused by insufficient space on one side. A transition section 3 is provided at the connection between the welding arm 2 and the mounting shaft 1. The transition section 3 can avoid the stress concentration problem caused by the right angle connection. Under high-frequency vibration, the right angle connection is prone to cracking due to repeated stress, while the transition section 3 can disperse the vibration stress, extend the fatigue life of the welding arm 2 and the mounting shaft 1, and reduce the risk of welding head fracture. The side of the welding arm 2 away from the mounting shaft 1 is connected to the full-wave welding head body 4. The end of the full-wave welding head body 4 away from the welding arm 2 is provided with welding teeth 5, so that the welding teeth 5 contact the workpiece. The welding head, acting as a "full-wave welding head," efficiently transmits the energy from the ultrasonic generator from the mounting shaft 1 to the full-wave welding head body 4, and then acts on the workpiece through the welding teeth 5. Compared with half-wave or partial vibration welding heads, it has less energy loss and more uniform temperature and pressure in the welding area, reducing the problems of "false welding" and "over-welding" caused by uneven energy distribution in the workpiece. At the same time, multiple sets of support positions 6 are provided on the surface of the mounting shaft 1 for supporting the working of the welding head. The welding arm 2 is located between the multiple sets of support positions 6, and the distance from the support positions 6 to the welding arm 2 is the same, so that the multiple sets of support positions 6 are symmetrically distributed about the welding arm 2. The support positions 6 on the mounting shaft 1 cooperate with the mounting fixture support structure on the equipment, so that the multiple sets of support positions 6 on the surface of the mounting shaft 1 are symmetrical about the welding arm 2, which can serve as "stable support points" for the welding head and the equipment. On the one hand, it can fix the working posture of the welding head and avoid the welding head displacement caused by vibration during the welding process; on the other hand, it can transfer some vibration energy to the equipment frame, reduce unnecessary vibration of the welding head itself, and further ensure welding accuracy.

[0029] refer to Figure 2 The value of welding arm 2 is 40-80mm. According to the welding avoidance requirements of the workpiece, the value of welding arm 2 can be taken within this range, so that the distance from the end of the full wave welding head body 4 away from welding arm 2 to the mounting shaft 1 is more than 55-60mm, so that the welding avoidance height can reach more than 55-60mm, which is significantly higher than the avoidance height of ordinary half wave welding head design. This greatly expands its application range, can easily adapt to irregular workpieces with three-dimensional structure, and expands the equipment's welding adaptability to complex products. At the same time, the vertical center axis of welding arm 2 and full wave welding head body 4 coincides with the vertical symmetry line of mounting shaft 1, and the connection between welding arm 2 and full wave welding head body 4 is treated with transition. The alignment of the central axis with the line of symmetry means that the force center of the welding head body, the force transmission center of the welding arm 2, and the support center of the mounting shaft 1 are all on the same vertical line. During ultrasonic vibration, the energy will be transmitted vertically to the welding tooth 5 along this "central line" without generating lateral force due to "center offset". At the same time, during the welding process, the connection between the full-wave welding head body 4 and the welding arm 2 is the "force transmission node of high-frequency vibration". If it is a right-angle connection, the stress generated by the vibration will be concentrated at the right-angle inflection point, which is prone to cracks or even breakage after long-term use. The transition treatment can disperse the stress to a larger contact area, reduce the stress concentration coefficient by 40%-60%, and significantly extend the service life of the welding head.

[0030] refer to Figure 3 and Figure 4 The mounting shaft 1 is set in two sections, with the welding arm 2 located between the two sections of the mounting shaft 1. The welding arm 2 is detachably connected to the mounting shaft 1. The welding arm 2 is connected to the two sections of the mounting shaft 1 by a screw connection, so that the welding arm 2 is threaded between the two sections of the mounting shaft 1. At the same time, the welding arm 2 can also be connected to the two sections of the mounting shaft 1 by other connection methods such as bolt connection, snap-fit ​​limit connection, pin positioning connection, and conical surface fit + lock nut connection, as long as the welding arm 2 and the mounting shaft 1 can be stably fixed. The two welding arms 2 are integrally formed and symmetrical.

[0031] During assembly, the integrally formed double welded arm 2 is first fixed to the two sections of mounting shaft 1 with a detachable structure. The standardized interface of the mounting shaft 1 is used to connect with the ultrasonic equipment, eliminating the need for overall machining of the extra-long mounting shaft 1, reducing assembly difficulty. The double welded arm 2 is symmetrically distributed between the two sections of mounting shaft 1. Combined with the design perpendicular to the mounting shaft 1, it extends radially along the mounting shaft 1 to form sufficient clearance space, which can avoid interference structures in the middle or around the workpiece.

[0032] refer to Figure 5 The mounting shaft 1 includes a first connecting section 1-1, a welding head connecting section 1-2, and a second connecting section 1-3. The first connecting section 1-1 and the second connecting section 1-3 have threaded grooves at their ends near the welding head connecting section 1-2. Both ends of the welding head connecting section 1-2 are fixedly connected with threaded posts. The first connecting section 1-1 and the second connecting section 1-3 are installed on the welding head connecting section 1-2 through the cooperation of the threaded posts and the threaded grooves, so that the welding arm 2 is connected to the welding head connecting section 1-2. The first connecting section 1-1 is used to connect an ultrasonic frequency tuner or generator. The second connecting section 1-3 can be used as a spare connecting end or an auxiliary fixing end for connecting balancers, heat dissipation components, etc. The welding connecting sections can centrally arrange the structures related to the welding arm 2, which can improve the positioning effect of the welding arm 2.

[0033] During assembly, the welding head connecting section 1-2 is first fastened to the first connecting section 1-1 and the second connecting section 1-3 respectively through threaded posts. The adjustable orientation of the threaded connection is used to calibrate the verticality and symmetry of the welding arm 2, ensuring that the welding teeth 5 on both sides are on the same working plane. At the same time, the first connecting section 1-1 and the second connecting section 1-3 are standardized structures and can be adapted to different equipment interfaces through threads. The welding head connecting section 1-2 is a functional section and its size can be customized according to the workpiece requirements. Different specifications of welding head connecting section 1-2 can be quickly replaced according to the welding spacing and avoidance requirements of the workpiece without replacing the entire mounting shaft 1, which is suitable for multi-variety production and reduces equipment investment costs.

[0034] refer to Figures 5 to 7 The mounting shaft 1 has fixing screws 7 at both ends away from the welding arm 2 for connecting to the ultrasonic frequency modulator and generator. The fixing screws 7 are detachably connected to the mounting shaft 1, which makes it easier to connect the welding head to the external ultrasonic frequency modulator and generator, shortens the replacement and debugging time, and greatly improves the effective working time of the equipment. The fixing screws 7 are fitted with elastic washers 8, which are located between the mounting shaft 1 and the external ultrasonic frequency modulator or balancer. The elasticity of the elastic washers 8 can automatically compensate for the unevenness or error of the mounting surface, ensuring that the welding head and the equipment parts always keep in close contact, avoiding vibration offset or energy emission caused by gaps, and ensuring the stability of ultrasonic energy transmission. At the same time, in the high-frequency ultrasonic vibration environment, the elasticity of the elastic washers 8 can absorb vibration energy through their own elastic expansion and contraction, reducing the rigid impact between the welding head and the frequency modulator or balancer, and simplifying the loss of vibration transmission.

[0035] Flat positions 1-4 are provided on the surface of the mounting shaft 1. Flat positions 1-4 are used to avoid obstruction during welding. Flat positions 1-4 are located in the middle of the welding head connection section 1-2 on the mounting shaft 1. There are four flat positions 1-4. Flat positions 1-4 are distributed in the upper, lower and front and back positions of the welding head connection section 1-2 on the mounting shaft 1. Welding arm 2 is located on flat positions 1-4.

[0036] Specifically, the flat parts 1-4 on the mounting shaft 1 are locally flattened by the welding head transition tube of the mounting shaft 1, and the central area of ​​the surface of the mounting shaft 1 is processed into a plane or a balanced curved surface, forming a recessed space in the middle of the mounting shaft 1. This provides clearance space for the non-welding areas on both sides of the workpiece, avoiding workpiece displacement caused by unilateral clearance, and also avoiding rigid collision between the workpiece and the mounting shaft 1 during the welding process.

[0037] refer to Figure 8The welding arm 2, the full-wave welding head body 4, and the welding teeth 5 are arranged in the same direction on the mounting shaft 1. The welding arm 2, the full-wave welding head body 4, and the welding teeth 5 are arranged in either a horizontal or vertical direction on the mounting shaft 1. This allows the horizontal or vertical width of the full-wave welding head body 4 to be changed according to requirements, enabling the welding head to adapt to different workpieces for welding and expanding the application range of the welding head. Furthermore, the shape of the full-wave welding head body 4 can also be changed according to requirements.

[0038] refer to Figures 1-8 The welding teeth 5 can be selected from circular, conical, EDM, rectangular, inverted, or elliptical tooth shapes. It offers a variety of tooth shape options, including circular, conical, EDM, rectangular, inverted, and elliptical, which can be flexibly matched according to different metal materials, thicknesses, and welding requirements to meet the needs of diverse welding scenarios. All welding head bodies are made of high-speed powder steel, and the welding teeth 5 are machined by turning, milling, and wire cutting. Finally, according to the tooth shape characteristics, the welding teeth 5 are ground by a grinding machine, or the circular teeth are machined by EDM and the electrodes are used to create the EDM pattern to ensure the accuracy and quality of the welding.

[0039] The implementation principle of this application embodiment is as follows: In implementation, the mounting shaft 1 is fitted with the mounting fixture on the equipment to install the mounting shaft 1 and the welding head. The support mechanism on the fixture is fitted with the support position 6 on the mounting shaft 1 to provide stable support for the welding head. Then, the fixing screws 7 on both ends of the mounting shaft 1 are connected and fixed to the frequency modulator and the balancer. The frequency modulator is connected and fixed to the ultrasonic generator. The ultrasonic generator works to generate ultrasonic amplitude, which drives the mounting shaft 1 to vibrate. The amplitude of the mounting shaft 1 drives the full-wave welding head body 4 on the welding arm 2 to vibrate, which in turn drives the welding teeth 5 to vibrate. Welding teeth 5 make contact with the workpiece through frictional contact with the contact amplitude. The force point is located in the area of ​​maximum amplitude of the welding head. Compared with half-wave welding head, the force is more uniform and the welding area is larger, which improves welding efficiency and quality. At the same time, the welding arm 2 drives the full-wave welding head body 4 to insert into or contact the workpiece surface, so that the mounting shaft 1 reaches the workpiece at a certain distance. This provides a clearance space for irregularly shaped workpieces such as grooved or convex parts, reduces contact with non-welding areas of the workpiece, and effectively avoids welding interference. The clearance height of the full-wave welding head body 4 can reach 55-60mm or more, which greatly expands the application range. In practice, when one end of the welding head is severely worn, the welding head is rotated so that the full-wave welding head body 4 at the other end of the welding head is rotated to the working position to weld the workpiece, reducing the probability of welding head replacement and minimizing the impact on welding work. When using a two-section mounting shaft 1 in conjunction with an integrated double welding arm 2 or a three-section mounting shaft 1, the head can be replaced by disassembling the integrated double welding arm 2 and the full-wave welding head body 4 or the welding head connecting section 1-2 on the three-section mounting shaft 1, without the need for complete disassembly, saving maintenance time and improving replacement efficiency.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ultrasonic high-avoidance full-wave welding head, characterized in that, The device includes a mounting shaft (1) for mounting a welding head. A pair of welding arms (2) for workpiece welding avoidance are connected to the middle position of the mounting shaft (1). The pair of welding arms (2) are symmetrically arranged on the mounting shaft (1). A transition section (3) is provided at the connection between the welding arm (2) and the mounting shaft (1). A full-wave welding head body (4) is connected to the end of the welding arm (2) away from the mounting shaft (1). Welding teeth (5) are provided at the end of the full-wave welding head body (4) away from the welding arm (2). Multiple sets of support positions (6) are provided on the surface of the mounting shaft (1). The welding arm (2) is located between the support positions (6), and the distance from the support position (6) to the welding arm (2) is equal.

2. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The length of the welding arm (2) is in the range of 40-80mm, and the mounting shaft (1) and the welding arm (2) are integrally formed. The central axis of the welding arm (2) is perpendicular to the central axis of the mounting shaft (1).

3. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The mounting shaft (1) is configured as two sections, and the welding arm (2) is disposed between the two sections of the mounting shaft (1). The welding arm (2) is detachably connected to the two sections of the mounting shaft (1), and the two welding arms (2) are integrally formed.

4. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The mounting shaft (1) includes a first connecting section (1-1), a welding head connecting section (1-2), and a second connecting section (1-3). The first connecting section (1-1) and the second connecting section (1-3) are both connected and fixed to the welding head connecting section (1-2) by threads. The welding arm (2) is integrally formed and connected to the welding head connecting section (1-2) on the mounting shaft (1).

5. The ultrasonic high-avoidance full-wave welding head according to claim 4, characterized in that, The welding head connecting section (1-2) of the mounting shaft (1) has a flat part (1-4) for workpiece avoidance, and the flat part (1-4) is located in the middle of the welding head connecting section (1-2) on the mounting shaft (1).

6. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The mounting shaft (1) is provided with fixing screws (7) at both ends away from the welding arm (2) for connecting the balancer or ultrasonic frequency tuner and generator. The fixing screws (7) are detachably connected to the mounting shaft (1).

7. The ultrasonic high-avoidance full-wave welding head according to claim 6, characterized in that, An elastic washer (8) is provided on the fixing screw (7), and the elastic washer (8) is located between the mounting shaft (1) and the frequency tuner or balancer.

8. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The welding arm, the full-wave welding head body (4), and the welding teeth (5) are arranged in the same direction on the mounting shaft (1), and the welding arm, the full-wave welding head body (4), and the welding teeth (5) are arranged in either a horizontal or a vertical direction on the mounting shaft (1).

9. The ultrasonic high-avoidance full-wave welding head according to claim 1, characterized in that, The welding teeth (5) can be selected as circular teeth, conical teeth, electric spark etched teeth, rectangular teeth, inverted teeth or elliptical teeth.

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