Ultrasonic welding clamp
By introducing a buffer component into the ultrasonic welding fixture, the problems of uneven clamping force and lack of buffer protection are solved, achieving uniform clamping and stable welding, improving welding accuracy and equipment reliability, and making it suitable for workpieces with high surface precision or brittle materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU XINBAO ULTRASONIC EQUIP
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional ultrasonic welding fixtures suffer from uneven clamping force and lack of buffer protection, which can cause workpieces to shift during the welding process, affecting accuracy and quality, and causing damage, especially to workpieces with high surface precision or brittle materials.
Design an ultrasonic welding fixture including an electric push rod, a clamping plate, and a buffer assembly. The buffer assembly consists of a buffer plate, a spring, a guide post, a stop ring, and a buffer ring. The buffer plate contacts the workpiece first, the spring deforms to disperse the clamping force, the guide post guides to ensure smooth movement of the buffer plate, the stop ring prevents dislodgement, and the buffer ring reduces hard impacts.
It achieves uniform clamping force, prevents damage to the workpiece surface, improves welding accuracy and product qualification rate, broadens the scope of application, reduces material waste and cost, extends equipment life, and reduces noise and vibration.
Smart Images
Figure CN224143724U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the technical field of ultrasonic welding, and specifically to an ultrasonic welding fixture. Background Technology
[0002] Ultrasonic welding is a highly efficient welding process that mainly uses high-frequency vibration waves to be transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects will fuse together due to mutual friction.
[0003] Traditional ultrasonic welding fixtures often suffer from uneven clamping force and lack of cushioning protection when holding workpieces. On the one hand, uneven clamping force may cause the workpiece to shift during welding, affecting welding accuracy and quality; on the other hand, the lack of cushioning protection measures can easily damage the workpiece surface during clamping, especially for workpieces with high surface precision requirements or brittle materials. Such damage can directly affect product performance and yield. Utility Model Content
[0004] This utility model mainly provides an ultrasonic welding fixture to solve the technical problems mentioned in the background art.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:
[0006] An ultrasonic welding fixture includes a welding table, an amplitude transformer is connected to the upper surface of the welding table, an ultrasonic welding head is connected to the amplitude transformer, and a clamping mechanism is connected to the bottom end of the ultrasonic welding head.
[0007] The clamping mechanism includes an electric push rod connected to the upper surface of the welding table, a clamping plate connected to the actuating end of the electric push rod, and a buffer assembly connected to the plate body of the clamping plate.
[0008] The buffer assembly includes a buffer plate connected to one side of the clamping plate and a spring connecting the buffer plate and the clamping plate.
[0009] Furthermore, the buffer plate has guide posts connected to both ends of the side surface near the clamping plate. The guide posts are inserted into the plate of the clamping plate and are inserted into the same end of the spring.
[0010] Furthermore, the clamping plate has a through hole for the guide post to pass through, and the clamping plate has a groove on the side near the buffer plate, the groove being used to accommodate the spring.
[0011] Furthermore, a termination ring is connected to one end of the guide post, and the termination ring is located at the end of the guide post that penetrates the buffer plate.
[0012] Furthermore, a buffer ring is connected to the side surface of the termination ring near the clamping plate, and the buffer ring is sleeved on the outside of the guide post.
[0013] Furthermore, the guide post has a thread at one end near the termination ring, and the guide post is connected to the termination ring via the thread.
[0014] Furthermore, strain gauges are embedded in the clamping plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] Firstly, in this invention, when clamping a workpiece, the buffer plate contacts the workpiece first. As the clamping plate continues to approach, the spring is compressed and deformed, providing a buffering effect and evenly distributing the clamping force, preventing the clamping plate from causing hard damage to the workpiece surface. This design is particularly suitable for workpieces with high surface precision requirements or brittle materials, greatly expanding the application range of welding fixtures, effectively improving the product qualification rate, and reducing material waste and cost increases caused by workpiece damage.
[0017] Secondly, the guide post, termination ring, and buffer ring of this utility model optimize the structure of the buffer assembly. The guide post provides precise guidance for the movement of the buffer plate, ensuring that it does not deviate during movement, thus ensuring uniform force on the spring and stable buffering effect. The termination ring prevents the guide post from detaching from the buffer plate, ensuring the integrity of the buffer assembly structure. The buffer ring further enhances the buffering effect, reduces hard collisions between components, lowers the risk of component wear and damage, extends the service life of the equipment, and also reduces noise and vibration caused by collisions, making the welding fixture operate more smoothly and reliably.
[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a cross-sectional view of the welding station of this utility model;
[0021] Figure 3 for Figure 2 Enlarged view of the structure of area A in the middle;
[0022] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model.
[0023] In the figure: 10, welding table; 20, amplitude transformer; 30, clamping mechanism; 31, electric push rod; 32, clamping plate; 321, through hole; 322, groove; 323, strain gauge; 33, buffer assembly; 331, buffer plate; 332, spring; 333, guide post; 334, termination ring; 335, buffer ring; 40, ultrasonic welding head. Detailed Implementation
[0024] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.
[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0027] This application provides an ultrasonic welding fixture, as shown in the schematic diagram below. Figure 1-4 As shown. The ultrasonic welding fixture includes a welding table 10, an amplitude transformer 20 connected to the upper surface of the welding table 10, an ultrasonic welding head 40 connected to the amplitude transformer 20, and a clamping mechanism 30 connected to the bottom end of the ultrasonic welding head 40;
[0028] The clamping mechanism 30 includes an electric push rod 31 connected to the upper surface of the welding table 10, a clamping plate 32 connected to the actuating end of the electric push rod 31, and a buffer assembly 33 connected to the plate body of the clamping plate 32.
[0029] The buffer assembly 33 includes a buffer plate 331 connected to one side of the clamping plate 32, and a spring 332 connected between the buffer plate 331 and the clamping plate 32.
[0030] It should be noted that in this embodiment, the welding table 10 serves as the basic support structure of the entire fixture, providing an installation platform for the amplitude transformer 20. The amplitude transformer 20 transmits and amplifies the ultrasonic energy generated by the ultrasonic generator, and then transmits it to the ultrasonic welding head 40. The electric push rod 31 in the clamping mechanism 30 extends and retracts according to control commands, and its actuator drives the clamping plate 32 to move. When the electric push rod 31 extends, the clamping plate 32 moves closer to the workpiece to be welded; when the electric push rod 31 retracts, the clamping plate 32 moves away from the workpiece. The buffer plate 331 in the buffer assembly 33 contacts the workpiece first during clamping, and the spring 332 is compressed and deformed due to the relative displacement between the buffer plate 331 and the clamping plate 32, absorbing part of the clamping force. The welding table 10 provides stable support, ensuring that the positions of each component are fixed throughout the welding process. The amplitude transformer 20 and the ultrasonic welding head 40 work together to provide the necessary ultrasonic energy for welding. The electric push rod 31 precisely controls the movement of the clamping plate 32, achieving flexible and stable clamping of workpieces of different sizes and shapes. The buffer assembly 33 acts as a buffer during clamping, preventing the clamping plate 32 from directly and rigidly contacting the workpiece and causing damage to its surface. It is especially suitable for workpieces with high surface quality requirements, effectively improving the adaptability and reliability of welding.
[0031] Optionally, such as Figure 3 and Figure 4 As shown, guide posts 333 are connected to both ends of the side surface of the buffer plate 331 near the clamping plate 32. The guide posts 333 are inserted into the plate of the clamping plate 32, and the guide posts 333 are inserted into the spring 332 at the same end.
[0032] In this embodiment, as the buffer plate 331 moves closer to or further away from the workpiece along with the clamping plate 32, the guide post 333 slides along the insertion position on the clamping plate 32. Since both ends of the guide post 333 are fixed to the buffer plate 331, when the buffer plate 331 is subjected to force and moves, the guide post 333 guides its movement, ensuring that the buffer plate 331 moves parallel, while simultaneously compressing or extending the spring 332 sleeved on the guide post 333. The guide post 333 makes the movement of the buffer plate 331 more stable and accurate, preventing the buffer plate 331 from tilting or shifting during movement, thereby ensuring that the spring 332 can be evenly stressed and stably perform its buffering function. This precise guiding mechanism improves the stability and reliability of the buffer assembly 33, ensures the consistency of the buffer protection effect on the workpiece, and helps improve welding quality.
[0033] Optionally, such as Figure 3 and Figure 4 As shown, the clamping plate 32 has a through hole 321 for the guide post 333 to pass through, and a groove 322 is provided on the side of the clamping plate 32 near the buffer plate 331. The groove of the groove 322 is used to accommodate the spring 332.
[0034] In this embodiment, the guide post 333 passes through the through hole 321 on the clamping plate 32 and serves as a guide when the buffer plate 331 moves. The groove 322 provides installation space for the spring 332. When the buffer plate 331 is subjected to the reaction force of the workpiece, causing the spring 332 to compress, the spring 332 is compressed and deformed within the groove 322. The groove 322 restricts the radial displacement of the spring 332 and prevents the spring 332 from twisting. The design of the through hole 321 and the groove 322 ensures effective cooperation between the guide post 333 and the clamping plate 32, achieving precise guidance of the buffer plate 331. On the other hand, the groove 322's containment and constraint of the spring 332 makes the spring 332 more stable during operation, reduces the risk of the spring 332 failing due to twisting, extends the service life of the spring 332, and also improves the overall working stability and reliability of the buffer assembly 33.
[0035] Optionally, such as Figure 3 and Figure 4 As shown, one end of the guide post 333 is connected to a termination ring 334, which is located at the end of the guide post 333 that penetrates the buffer plate 331.
[0036] In this embodiment, the guide post 333 penetrates the buffer plate 331, and the termination ring 334 is installed at the end of the guide post 333 that extends out of the buffer plate 331. During the movement of the buffer plate 331, when the spring 332 is stretched to its limit position, the termination ring 334 prevents the guide post 333 from dislodging from the buffer plate 331, ensuring that the guide post 333 is always connected to the buffer plate 331 and maintaining the structural integrity of the buffer assembly 33. The termination ring 334 provides a safety guarantee for the buffer assembly 33, avoiding the situation where the buffer plate 331 becomes uncontrollable or the buffer assembly 33 fails due to the guide post 333 dislodging, enhancing the stability and reliability of the buffer assembly 33 during long-term use, and ensuring the normal operation of the welding fixture.
[0037] Optionally, such as Figure 3 and Figure 4 As shown, a buffer ring 335 is connected to the side surface of the termination ring 334 near the clamping plate 32, and the buffer ring 335 is sleeved on the outside of the guide post 333.
[0038] In this embodiment, as the guide post 333 moves, the buffer ring 335 moves closer to or further away from the clamping plate 32 along with the terminating ring 334. At the moment when the clamping plate 32 and the terminating ring 334 may collide, the buffer ring 335 contacts the clamping plate 32 first, and the elastic deformation of its own material absorbs part of the impact force, reducing the hard collision between the guide post 333 and the clamping plate 32.
[0039] Optionally, such as Figure 3 and Figure 4As shown, the guide post 333 has a thread at one end near the termination ring 334, and the guide post 333 is connected to the termination ring 334 through the thread.
[0040] In this embodiment, one end of the guide post 333 is threaded, and the terminating ring 334 is connected to the guide post 333 via the thread. During installation, the terminating ring 334 is screwed onto the guide post 333 to a suitable position. When disassembly, maintenance, or replacement of components is required, the terminating ring 334 can be removed from the guide post 333 by reverse screwing. Adjusting the position of the terminating ring 334 on the guide post 333 changes the stroke of the spring 332, thereby altering the buffering effect. The threaded connection simplifies the installation and removal of the terminating ring 334, allowing workers to individually repair, replace, or adjust components such as the guide post 333, the terminating ring 334, and the buffer ring 335, reducing equipment maintenance difficulty and cost, and improving equipment maintainability.
[0041] Optionally, such as Figure 3 As shown, strain gauges 323 are embedded in the plate body of the clamping plate 32.
[0042] In this embodiment, the strain gauge 323 is embedded in the clamping plate 32. When the clamping plate 32 applies a clamping force to the workpiece, the clamping plate 32 undergoes a slight deformation, and the strain gauge 323 deforms accordingly. The resistance value of the strain gauge 323 changes due to its own deformation. By measuring the change in the resistance value of the strain gauge 323, the force on the clamping plate 32 can be calculated, and this force signal can be converted into an electrical signal output.
[0043] The specific operation method of this utility model is as follows:
[0044] When using this ultrasonic welding fixture, first place the workpiece to be welded at the designated position on the welding table 10. Then, the operator activates the electric push rod 31. Upon receiving the control command, the actuator of the electric push rod 31 begins to push the clamping plate 32 towards the workpiece. During this movement, the buffer plate 331, connected to the clamping plate 32, contacts the workpiece first. As the clamping plate 32 continues to approach, the spring 332 gradually deforms under the relative displacement of the buffer plate 331 and the clamping plate 32, thus buffering the clamping force.
[0045] During this process, the guide post 333 slides along the through hole 321 on the clamping plate 32, providing precise guidance for the movement of the buffer plate 331, ensuring its parallel movement, and making the spring 332 uniformly stressed.
[0046] Once the workpiece is clamped in place, the ultrasonic generator produces ultrasonic energy, which is transmitted and amplified by the amplitude transformer 20, and then transmitted to the ultrasonic welding head 40. The ultrasonic welding head 40 applies the ultrasonic energy to the welding area of the workpiece, causing the workpiece to be welded under high-frequency vibration and friction. After welding is completed, the electric push rod 31 moves in the opposite direction, causing the clamping plate 32 to release the workpiece, and the operator can then remove the welded product, completing one welding operation.
[0047] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.
Claims
1. An ultrasonic welding jig comprising a welding table (10), characterized in that, An amplitude transformer (20) is connected to the upper surface of the welding table (10), an ultrasonic welding head (40) is connected to the amplitude transformer (20), and a clamping mechanism (30) is connected to the bottom end of the ultrasonic welding head (40). The clamping mechanism (30) includes an electric push rod (31) connected to the upper surface of the welding table (10), a clamping plate (32) connected to the actuation end of the electric push rod (31), and a buffer assembly (33) connected to the plate body of the clamping plate (32). The buffer assembly (33) includes a buffer plate (331) connected to one side of the clamping plate (32) and a spring (332) connected between the buffer plate (331) and the clamping plate (32).
2. The ultrasonic welding fixture of claim 1, wherein, The buffer plate (331) has guide posts (333) connected to both ends of the side surface of the plate near the clamping plate (32). The guide posts (333) are inserted into the plate of the clamping plate (32), and the guide posts (333) are inserted into the spring (332) at the same end.
3. The ultrasonic welding fixture of claim 1, wherein, The clamping plate (32) has a through hole (321) for the guide post (333) to pass through, and a groove (322) is provided on the side of the clamping plate (32) near the buffer plate (331). The groove (322) is used to accommodate the spring (332).
4. The ultrasonic welding fixture of claim 3, wherein, One end of the guide post (333) is connected to a termination ring (334), which is located at one end of the guide post (333) that penetrates the buffer plate (331).
5. The ultrasonic welding fixture of claim 4, wherein, The termination ring (334) has a buffer ring (335) connected to the side surface near the clamping plate (32), and the buffer ring (335) is sleeved on the outside of the guide post (333).
6. The ultrasonic welding fixture according to claim 5, characterized in that, The guide post (333) has a thread at one end near the termination ring (334), and the guide post (333) is connected to the termination ring (334) by the thread.
7. The ultrasonic welding fixture of claim 1, wherein, Strain gauges (323) are embedded in the plate body of the clamping plate (32).