Ultrasonic welding device for FPC board and Busbar
The ultrasonic welding device, driven by dual cylinders and controlled by a closed loop, solves the problem of weld head deformation caused by uneven welding stress, achieving high-precision and low-deformation welding results, and improving production efficiency and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BRANSON ULTRASONICS SHANGHAI
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional ultrasonic welding equipment results in uneven stress distribution at the welding head during the welding process, leading to deformation of the welding head.
The system employs a dual-cylinder drive mechanism, combined with components such as vertical positioning blocks, axial positioning stops, and node support screws. Through graded actions and closed-loop control, it ensures uniform distribution of welding stress, achieving high-precision and low-deformation welding.
It improves welding precision and efficiency, reduces the risk of weld joint deformation, and enhances the applicability and production efficiency of the equipment.
Smart Images
Figure CN224254444U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ultrasonic welding technology, and in particular to an ultrasonic welding device for FPC boards and Busbars. Background Technology
[0002] Ultrasonic welding equipment is a device that uses high-frequency ultrasonic vibration energy for welding. By converting ultrasonic energy into mechanical vibration, it generates localized high temperatures and pressures at the workpiece contact surfaces, causing the material surfaces to melt and bond together, forming a strong welded joint. Ultrasonic welding is suitable for joining materials such as plastics and metals, and has advantages such as fast welding speed, no need to add solder, and a small heat-affected zone.
[0003] A search revealed that Chinese Publication No. CN217224026U discloses an ultrasonic welding machine, comprising a base, a guide assembly, a welding assembly, and a drive assembly. The base includes a base plate and a support frame, with the support frame mounted on the base plate. The guide assembly includes a guide rail, a slider mounting plate, and an extension block. The guide rail is fixed to the support frame, the slider mounting plate is connected to the guide rail, and the extension block is fixed to the slider mounting plate. The welding assembly includes a welding table, a tool head, an amplitude transformer, and a transducer. The welding table is mounted on the base plate, one end of the amplitude transformer is connected to the tool head, and the other end is connected to the transducer. The tool head, amplitude transformer, and transducer are fixed to the slider mounting plate. The drive assembly is mounted on the support frame and includes a drive cylinder and a displacement sensor. One end of the drive cylinder is connected to the tool head, and the displacement sensor is electrically connected to the drive cylinder and the slider mounting plate. The drive cylinder drives the tool head to move along the guide rail toward the welding table, and the displacement sensor controls the movement distance of the tool head to prevent excessive force and cracking when welding thin materials.
[0004] Traditional ultrasonic welding devices often suffer from uneven stress distribution at the welding head during use, leading to deformation of the welding head. To address this issue, an ultrasonic welding device for FPC boards and Busbars is proposed. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides an ultrasonic welding device for FPC boards and Busbars, which aims to improve the problem of uneven welding stress distribution in the welding joint in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An ultrasonic welding apparatus for FPC boards and Busbars includes a mounting plate, a drive mechanism mounted on the inner wall of the mounting plate, a welding mechanism mounted on one side of the drive mechanism, and a control mechanism mounted on the outside of the mounting plate.
[0008] The welding mechanism includes a placement frame, a modulator barrel clamp mounted at the bottom of the placement frame, a custom welding head mounted on one side of the modulator barrel clamp, two vertical positioning blocks mounted on one side of the placement frame, a node support screw threaded to the top of the placement frame, adjusting level screws threaded to both sides of the modulator barrel clamp, a transducer mounted on one side of the modulator barrel clamp, an axial positioning stop block for the barrel mounted on one side of the modulator barrel clamp, and a limiting component mounted on one side of the mounting plate.
[0009] The above technical solution achieves welding positioning and pressure control through dual-cylinder drive. After the execution cylinder pushes the moving plate along the slide rail for coarse positioning, the welding cylinder drives the customized welding head to press down precisely. The transducer converts the high-frequency electrical signal into mechanical vibration, which is amplified by the amplitude modulator barrel clamp and transmitted to the welding head. Molecular diffusion and bonding occur at the FPC / Busbar interface. The vertical positioning block and the axial positioning stop block work together to limit lateral displacement. The horizontal screw is adjusted to optimize the vibration transmission angle, and the node support screw disperses the welding stress. The control mechanism collects pressure and displacement data in real time and ensures stable welding energy density through closed-loop adjustment, thus achieving high-precision, low-deformation ultrasonic welding.
[0010] As a further description of the above technical solution:
[0011] The driving mechanism includes an actuating cylinder, the actuating cylinder is fixedly connected to the inner wall of the mounting plate, the driving end of the actuating cylinder is fixedly connected to a moving plate, the bottom of the moving plate is fixedly connected to a welding cylinder, the driving end of the welding cylinder is fixedly connected to an adjusting plate, both sides of the adjusting plate are threaded with connecting bolts, and the bottom of the connecting bolts is fixedly connected to the top of the placement frame.
[0012] Through the above technical solution: the drive mechanism drives the moving plate to move vertically through the execution cylinder, realizing the rapid positioning of the welding mechanism. The execution cylinder first pushes the moving plate for coarse positioning, and then the welding cylinder drives the customized welding head to complete the precision pressing action through the adjustment plate. The connecting bolts rigidly connect the placement frame and the adjustment plate, providing stable support while allowing fine adjustment of the parallelism of the welding head through the threaded connection. The execution cylinder and the welding cylinder work together in stages. In the coarse adjustment stage, the cylinder quickly approaches the workpiece, and in the fine adjustment stage, the pressure is precisely controlled. The rigid structure of the placement frame disperses the welding stress, ensuring uniform distribution of welding head pressure and interface bonding quality during the welding process.
[0013] As a further description of the above technical solution:
[0014] The limiting component includes two slide rails, the slide rails are fixedly connected to the inner wall of the mounting plate, and two sliding blocks are slidably connected to the outside of the slide rails. The two sliding blocks are respectively fixedly connected to one side of the movable plate and the placement frame.
[0015] The above technical solution involves a high-precision guiding system consisting of a slide rail and a sliding block. The rigid fixation of the slide rail ensures that the moving plate and the placement frame move along the set trajectory. The split sliding block design enables independent sliding control of the two mechanisms. The low friction characteristics reduce multi-axis motion interference and ensure welding positioning accuracy and motion stability.
[0016] As a further description of the above technical solution:
[0017] The control mechanism includes a support plate, the bottom of which is mounted on the top of the mounting plate. A frame box is mounted on the top of the support plate. A control valve is mounted on one side of the support plate, and a grating ruler is provided on one side of the mounting plate.
[0018] The above technical solution involves using a grating ruler to monitor the displacement of the moving plate in real time, transmitting the data to the control system inside the frame box, and combining it with the welding pressure feedback to drive the control valve to adjust the air pressure, thereby achieving dynamic closed-loop control of the cylinder's action speed and welding pressure, ensuring the positioning accuracy and pressure stability of the welding head.
[0019] As a further description of the above technical solution:
[0020] The bottom of the node support screw is threaded to the top of the custom welding head, and a pressure sensor is provided on the top of the placement frame.
[0021] The above technical solution involves: node support screws rigidly connecting the welding head to the placement frame; a multi-point support structure dispersing welding stress; a pressure sensor monitoring the dynamic pressure of the welding head in real time; and a closed-loop feedback mechanism combined with the control mechanism to dynamically adjust the cylinder pressure to maintain stable energy density at the welding interface.
[0022] As a further description of the above technical solution:
[0023] The transducer is externally fixedly connected to a locking clamp, the top of which is fixedly connected to the bottom of the placement frame;
[0024] Through the above technical solution, the locking clamp fixes the transducer to the placement frame through a rigid connection, forming a stable vibration transmission node, suppressing the lateral resonance offset when the transducer is working, reducing energy loss, ensuring that high-frequency vibration is efficiently transmitted to the welding head along the axial direction, and improving the welding energy utilization rate and interface bonding strength.
[0025] As a further description of the above technical solution:
[0026] A welding station is mounted on the outside of the mounting plate, and a nut is connected to the external thread of the connecting bolt;
[0027] The above technical solution provides a reference positioning surface for the workpiece and forms a double fixing structure with the anti-loosening nut of the connecting bolt. The preload of the threaded pair maintains the rigid connection between the adjusting plate and the placement frame, preventing the bolt from rotating and loosening under high-frequency vibration conditions, and ensuring the welding alignment accuracy and energy transmission path stability.
[0028] As a further description of the above technical solution:
[0029] Two springs are mounted on the outside of the actuator cylinder, and the other end of the springs is mounted on the top of the placement frame;
[0030] Through the above technical solution: the spring forms an elastic buffer system when driven by the cylinder, absorbing the impact load of the high-speed movement of the moving plate. At the same time, it provides reverse support force through the anchor point at the top of the placement frame, maintaining the stability of the mechanism when the welding head vibrates at high frequency, reducing the wear of the slide rail and ensuring positioning accuracy.
[0031] This utility model has the following beneficial effects:
[0032] 1. In this utility model, the overall pressing height is controlled by an actuating cylinder, the pressing height of the welding head is controlled by a welding cylinder, the acceleration and force of the welding head are controlled by a pressure sensor, and the node support prevents the welding head from shifting, thereby forming an efficient and stable welding system, protecting the welding head from bending and deformation, and making the welding stress more uniform.
[0033] 2. This utility model enhances the applicability of the welding device. It adopts a double-headed bullhorn-shaped longitudinal welding head for welding multi-layer foil materials. The length of the welding head swing arm can be customized according to requirements. Furthermore, the integrated welding device can directly weld a whole piece of material onto the target substrate, resulting in a high degree of automation, reduced production costs, and improved production efficiency. Attached Figure Description
[0034] Figure 1 This is a three-dimensional schematic diagram of the ultrasonic welding device for FPC boards and Busbars proposed in this utility model.
[0035] Figure 2 This is a schematic diagram of the connecting bolts of the ultrasonic welding device for FPC boards and Busbars proposed in this utility model.
[0036] Figure 3 This is a schematic diagram of the welding mechanism of the ultrasonic welding device for FPC boards and Busbars proposed in this utility model.
[0037] Figure 4This is a schematic diagram of the grating ruler structure of the ultrasonic welding device for FPC boards and Busbar proposed in this utility model.
[0038] Legend:
[0039] 1. Mounting plate; 2. Drive mechanism; 21. Actuating cylinder; 22. Moving plate; 23. Welding cylinder; 24. Adjusting plate; 25. Connecting bolt; 3. Welding mechanism; 31. Amplifier barrel clamp; 32. Custom welding head; 33. Vertical positioning block; 34. Node support screw; 35. Adjusting level screw; 36. Transducer; 37. Barrel axial positioning stop; 38. Placement frame; 39. Limiting component; 391. Slide rail; 392. Sliding block; 4. Control mechanism; 41. Support plate; 42. Frame box; 43. Control valve; 44. Grating ruler; 5. Welding table; 6. Spring; 7. Pressure sensor. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] Reference Figures 2 to 3 This utility model provides an embodiment of an ultrasonic welding device for FPC boards and busbars, including a mounting plate 1. A drive mechanism 2 is mounted on the inner wall of the mounting plate 1. The drive mechanism 2 employs dual-cylinder coordinated control, achieving dynamic coordination of coarse and fine adjustments through graded actions to improve positioning efficiency. A welding mechanism 3 is mounted on one side of the drive mechanism 2. The welding mechanism 3 adopts a modular design, with a placement frame 38 and an amplitude modulator barrel clamp 31 forming a rigid structure, adaptable to the welding requirements of workpieces of different sizes. A control mechanism 4 is mounted on the outside of the mounting plate 1, integrating an automated control system. Multi-dimensional parameter feedback enables closed-loop adjustment of the welding process. The welding mechanism 3 includes a placement frame 38, which is made of lightweight and high-strength material to reduce motion inertia while ensuring structural stability. An amplitude modulator barrel clamp 31 is installed at the bottom of the placement frame 38. The amplitude modulator barrel clamp 31 has a built-in resonant amplification structure that can amplify the high-frequency vibration output by the transducer 36 to the micron-level amplitude, thereby improving welding efficiency. A custom welding head 32 is installed on one side of the amplitude modulator barrel clamp 31. The custom welding head 32 is made of high-hardness alloy material and has a special geometric design to optimize pressure distribution, making it suitable for precision welding of ultra-thin multilayer materials.
[0042] Two vertical positioning blocks 33 are installed on one side of the placement frame 38. The vertical positioning blocks 33 form a precision fit gap with the workpiece reference edge, which effectively suppresses the lateral displacement during the welding process. The top of the placement frame 38 is threaded with a node support screw 34. The node support screw 34 disperses the welding reaction force through a multi-point support structure, reducing the risk of weld head deformation. Both sides of the amplitude modulator barrel clamp 31 are threaded with adjusting horizontal screws 35. The adjusting horizontal screws 35 can finely adjust the lateral angle of the barrel, ensuring that the vibration energy is uniformly transmitted to the welding surface. A transducer 36 is installed on one side of the amplitude modulator barrel clamp 31. The transducer 36 has a built-in piezoelectric ceramic component. It maintains the stability of the resonant frequency through constant preload, ensuring efficient energy conversion. A barrel axial positioning block 37 is installed on one side of the amplitude modulator barrel clamp 31. The barrel axial positioning block 37 adopts a limiting structure to constrain lateral displacement and prevent multi-layer material stacking misalignment.
[0043] A limiting component 39 is installed on one side of the mounting plate 1. The limiting component 39 cooperates with the sliding block 392 through a high-precision slide rail 391 to achieve multi-axis independent motion control and eliminate linkage interference. The limiting component 39 includes two slide rails 391. The slide rails 391 adopt a smooth drive design to ensure the stability of the displacement trajectory during high-speed movement. The slide rails 391 are externally fixedly connected to the inner wall of the mounting plate 1. The inner wall of the mounting plate 1 is preset with a precision positioning reference to ensure the flatness and perpendicularity of the slide rails 391. Two sliding blocks 392 are externally slidably connected to the slide rails 391. The sliding blocks 392 are made of a low-friction coefficient material, which is suitable for wide temperature range conditions and extends service life. The two sliding blocks 392 are respectively fixedly connected to one side of the moving plate 22 and the placement frame 38. The movable plate 22 and the placement frame 38 adopt a split connection design to realize independent control of multi-axis movement. The bottom thread of the node support screw 34 is connected to the top of the custom welding head 32. The node support screw 34 and the groove on the top of the welding head cooperate to decompose the welding stress to the frame body. The top of the placement frame 38 is equipped with a pressure sensor 7, which monitors the dynamic pressure of the welding head in real time and realizes the dynamic balance of welding pressure through rapid feedback. The external fixed connection of the transducer 36 is a locking hoop. The locking hoop has a built-in damping structure to effectively suppress transverse harmonic vibration and improve energy transfer efficiency. The top of the locking hoop is fixedly connected to the bottom of the placement frame 38. The locking hoop and the placement frame 38 form a suspended node matching structure to reduce resonant energy loss.
[0044] Specifically, this ultrasonic welding device achieves high-precision welding of FPC / Busbar through dual-cylinder coordinated drive and multi-modal closed-loop control. The actuator cylinder 21 of the drive mechanism 2 first pushes the moving plate 22 to quickly and coarsely adjust it to the preset height along the slide rail 391. Then, the welding cylinder 23 dynamically adjusts the downward pressure of the customized welding head 32 with a resolution of 0.02N based on the feedback of the 24-bit ADC signal from the pressure sensor 7. The transducer 36 converts the 20kHz electrical signal into high-frequency mechanical vibration, which is amplified to an amplitude of 8μm by the built-in titanium alloy resonant ring of the amplitude modulator barrel clamp 31. Combined with the adjustment of the horizontal screw 35, the vibration transmission angle is finely adjusted to make the energy density of the welding surface uniformly distributed. The vertical positioning block 33 The axial positioning stop 37 of the barrel forms a lateral constraint of ±0.005mm. The node support screw 34 disperses the welding stress to the reinforcing rib structure of the placement frame 38 through three-point support. The control mechanism 4 collects 4096 linear displacement data every 0.5ms through the grating ruler 44. Combined with the low friction coefficient sliding block 392 of the slide rail 391, it realizes multi-axis independent movement. The DSP controller dynamically corrects the welding pressure, amplitude and standing wave frequency. When the impedance fluctuation is detected to be >3%, the control valve 43 switches the gas path emergency protection within 10ms. The suspended node matching structure of the locking clamp reduces energy loss by 12%. Finally, the process indicators of welding speed of 150 points / minute and yield of 99.6% are achieved.
[0045] refer to Figure 1 , Figure 2 and Figure 4 The drive mechanism 2 includes an actuator cylinder 21, which is externally fixedly connected to the inner wall of the mounting plate 1. This rigid connection ensures the stability of the actuator cylinder 21 during vertical movement, preventing axial displacement due to vibration and providing a precise reference plane for the subsequent welding mechanism 3. A moving plate 22 is fixedly connected to the drive end of the actuator cylinder 21. Two springs 6 are mounted externally on the actuator cylinder 21. The springs 6 and the placement frame 38 form an elastic support system, providing a reverse buffer force when the moving plate 22 rises and falls rapidly, reducing the instantaneous impact load on the slide rail 391 and extending the service life of the guide rail. The other end of the springs 6 is mounted on the placement frame 38. At the top of the mounting plate 22, a welding cylinder 23 is fixedly connected to the bottom. The spring fixing point set at the top of the placement frame 38 and the slide rail 391 form an independent suspension system, so that the welding cylinder 23 is not disturbed by the movement of the XY axis when performing high-frequency vibration welding. An adjustment plate 24 is fixedly connected to the drive end of the welding cylinder 23. Both sides of the adjustment plate 24 are threaded with connecting bolts 25. The parallelism of the custom welding head 32 is finely adjusted by the connecting bolts 25 with a precision of ±0.05mm, ensuring that the ultrasonic vibration energy is evenly distributed at the welding point. A welding table 5 is installed on the outside of the mounting plate 1, and nuts are threaded on the outside of the connecting bolts 25.
[0046] The welding station 5 features an anodized surface and, in conjunction with the grating ruler 44, achieves sub-micron level alignment accuracy for the FPC / Busbar. An anti-loosening nut design prevents rotation of the threaded pair due to high-frequency vibration. The bottom of the connecting bolt 25 is fixedly connected to the top of the placement frame 38. The control mechanism 4 includes a support plate 41. The placement frame 38 and the support plate 41 form a composite load-bearing structure, dispersing the welding impact force to the six reinforcing ribs of the mounting plate 1, increasing system rigidity by 37%. The bottom of the support plate 41 is mounted on the top of the mounting plate 1, and a rack board box 42 is mounted on the top of the support plate 41. The rack board box 42 integrates a DSP controller, which is controlled by the grating ruler 44. The collected displacement data is used to calculate the acceleration curve of the welding cylinder 23 in real time to achieve dynamic PID adjustment. A control valve 43 is installed on one side of the support plate 41, and a grating ruler 44 is installed on one side of the mounting plate 1. The control valve 43 adopts a two-position five-way solenoid valve group. When the pressure sensor 7 detects an impedance abnormality of >5%, the air path can be switched within 15ms to make the welding head retract threemm in an emergency. After receiving the high-frequency electrical signal, the transducer 36 generates ultrasonic vibration. The amplitude is amplified by the amplitude modulator barrel clamp 31. The amplitude modulator barrel clamp 31 has a built-in titanium alloy resonant ring, which amplifies the vibration amplitude of the transducer 36 by 2.8 times. At the same time, the locking clamp suppresses the resonant noise of >5kHz.
[0047] Adjusting the horizontal screw 35 finely adjusts the lateral angle of the barrel. The actuator cylinder 21 and the welding cylinder 23 adopt a staged action. The staged drive strategy enables the coarse positioning speed to reach 120mm / s. In the fine positioning stage, the pressing speed is controlled at 0.8mm / s±5% through the proportional valve, shortening the welding cycle by 22%. The node support screw 34 contacts the groove of the welding head. The barrel axial positioning block 37 ensures accurate lateral pushing. The node support screw 34 adopts a three-point contact design to distribute the welding stress to the tungsten carbide contact surface of the barrel axial positioning block 37, achieving a lateral positioning accuracy of ±0.01mm. The control system integrated in the frame board box 42 corrects parameters through the data of the grating ruler 44. The system collects the 4096-line encoded signal of the grating ruler 44 every 0.5ms. Combined with the 24-bit ADC data of the pressure sensor 7, it realizes closed-loop control of welding energy density.
[0048] Specifically, the welding system employs a dual-cylinder staged drive and closed-loop control strategy. First, the execution cylinder 21 drives the moving plate 22 to rapidly descend along the slide rail 391 to a preset safe height. At this point, the elastic support system of the spring 6 effectively buffers the impact load. Then, the welding cylinder 23, through the precision thread adjustment of the adjusting plate 24, drives the custom welding head 32 to precisely press down at a speed of 0.8 mm / s ± 5%. The pressure sensor 7 monitors the contact pressure in real time. The transducer 36 converts the 20 kHz electrical signal into mechanical vibration, which is amplified 2.8 times by the amplitude modulator barrel clamp 31 and transmitted to the welding head, generating molecular diffusion at the FPC / Busbar interface. The grating ruler 44 feeds back 4096 linear displacement data every 0.5ms. Combined with the 24-bit ADC signal of the pressure sensor 7, the DSP controller dynamically adjusts the gas source pressure and vibration parameters to achieve closed-loop control of welding energy density. When an impedance abnormality is detected, the control valve 43 switches the gas path within 15ms to cause the welding head to retract urgently. The node support screw 34 and the axial positioning block 37 of the tungsten carbide barrel work together to maintain a lateral accuracy of ±0.01mm. The axial positioning block 37 of the barrel is finely adjusted by adjusting the horizontal screw 35 to ensure uniform distribution of vibration energy. Ultimately, the process indicators of a 22% increase in welding speed and a reduction in the rate of false welds to 0.3% are achieved.
[0049] Working principle: After the cylinder 21 is started, it drives the moving plate 22 to move vertically along the slide rail 391, which drives the welding cylinder 23 to descend to the preset height. The grating ruler 44 monitors the displacement in real time to ensure that the welding mechanism 3 accurately reaches the initial position. At this time, the FPC plate on the welding table 5 is aligned with the busbar. The vertical positioning block 33 and the barrel axial positioning block 37 work together to limit the lateral displacement of the welding head and ensure the perpendicularity of the welding surface. The welding cylinder 23 drives the customized welding head 32 to press down through the adjusting plate 24. The pressure sensor 7 feeds back the welding head contact pressure to the control valve 43 in real time. The spring 6 provides buffer force. Combined with the proportional valve, the air source pressure is dynamically adjusted to keep the acceleration of the welding head stable within the preset range to avoid false welding or material overload. The node support screw 34 contacts the groove of the welding head to disperse the welding stress and prevent the welding head from bending and deforming.
[0050] After receiving a high-frequency electrical signal, the transducer 36 generates ultrasonic vibrations. The amplitude is amplified by the amplitude modulator barrel clamp 31 and then transmitted to the custom welding head 32. The welding surface of the welding head forms high-frequency frictional heat in the contact area with the FPC / Busbar, causing the molecules of the interface metal layer to diffuse and bond. The horizontal screw 35 is adjusted to finely adjust the lateral angle of the barrel to ensure uniform distribution of vibration energy and reduce spatter. The actuator cylinder 21 and the welding cylinder 23 adopt a staged action. The actuator cylinder 21 quickly and coarsely adjusts the body height to a safe clearance position, and the welding cylinder 23 finely adjusts the downward pressure of the welding head. When the length of the welding head swing arm reaches a certain value, the moving plate 22 and the placement frame 38 move independently through the sliding block 392 to avoid interference of XY axis movement and realize continuous welding of long workpieces.
[0051] The integrated control system within the frame board box 42 uses displacement data from the grating ruler 44 and feedback values from the pressure sensor 7 to correct welding parameters in real time. If an impedance abnormality is detected, the control valve 43 switches the two-position five-way solenoid valve air path, causing the welding head to retract urgently. The locking and clamping structures outside the transducer 36 suppress resonance offset and ensure consistent energy density on the welding surface. Through dual-cylinder staged action, node support, and dynamic pressure adjustment, the welding speed is increased and the rate of false welds is reduced. Meanwhile, the custom-designed longitudinal horn-shaped welding head 32 is suitable for welding multi-layer foil materials, and the axial positioning stop 37 of the barrel makes the lateral pushing more precise, reduces the range of connection impedance fluctuations, and meets the durability requirements of multiple temperature cycles.
[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An ultrasonic welding apparatus for FPC boards and busbars, comprising a mounting plate (1), characterized in that: The inner wall of the mounting plate (1) is equipped with a drive mechanism (2), a welding mechanism (3) is installed on one side of the drive mechanism (2), and a control mechanism (4) is installed on the outside of the mounting plate (1). The welding mechanism (3) includes a placement frame (38), a modulator barrel clamp (31) is installed at the bottom of the placement frame (38), a custom welding head (32) is installed on one side of the modulator barrel clamp (31), two vertical positioning blocks (33) are installed on one side of the placement frame (38), a node support screw (34) is threaded to the top of the placement frame (38), adjusting level screws (35) are threaded to both sides of the modulator barrel clamp (31), a transducer (36) is installed on one side of the modulator barrel clamp (31), a barrel axial positioning stop (37) is installed on one side of the modulator barrel clamp (31), and a limiting component (39) is installed on one side of the mounting plate (1).
2. The ultrasonic welding apparatus for FPC boards and Busbars according to claim 1, characterized in that: The drive mechanism (2) includes an actuating cylinder (21), the actuating cylinder (21) is fixedly connected to the inner wall of the mounting plate (1), the driving end of the actuating cylinder (21) is fixedly connected to a moving plate (22), the bottom of the moving plate (22) is fixedly connected to a welding cylinder (23), the driving end of the welding cylinder (23) is fixedly connected to an adjusting plate (24), both sides of the adjusting plate (24) are threaded with connecting bolts (25), and the bottom of the connecting bolts (25) is fixedly connected to the top of the placement frame (38).
3. The ultrasonic welding apparatus for FPC boards and busbars according to claim 2, characterized in that: The limiting component (39) includes two slide rails (391), the slide rails (391) are fixedly connected to the inner wall of the mounting plate (1), and the slide rails (391) are slidably connected to two sliding blocks (392), the two sliding blocks (392) are respectively fixedly connected to one side of the moving plate (22) and the placement frame (38).
4. The ultrasonic welding apparatus for FPC boards and Busbars according to claim 1, characterized in that: The control mechanism (4) includes a support plate (41), the bottom of which is mounted on the top of the mounting plate (1), a rack plate box (42) is mounted on the top of the support plate (41), a control valve (43) is mounted on one side of the support plate (41), and a grating ruler (44) is provided on one side of the mounting plate (1).
5. The ultrasonic welding apparatus for FPC boards and Busbars according to claim 1, characterized in that: The bottom of the node support screw (34) is threaded to the top of the custom welding head (32), and a pressure sensor (7) is provided on the top of the placement frame (38).
6. The ultrasonic welding apparatus for FPC boards and Busbars according to claim 1, characterized in that: The transducer (36) is externally fixedly connected to a locking clamp, the top of which is fixedly connected to the bottom of the placement frame (38).
7. The ultrasonic welding apparatus for FPC boards and busbars according to claim 2, characterized in that: The mounting plate (1) is equipped with a welding station (5) on its exterior, and the connecting bolt (25) is threaded with a nut on its exterior.
8. The ultrasonic welding apparatus for FPC boards and busbars according to claim 2, characterized in that: Two springs (6) are mounted on the outside of the actuator cylinder (21), and the other end of the springs (6) is mounted on the top of the placement frame (38).