Linear vibration friction welding equipment

Abstract

The invention provides linear vibration friction welding equipment, and relates to the field of automobile thermoplastic structural part welding equipment. The linear vibration friction welding equipment comprises a welding equipment box, a control part is integrated in the welding equipment box, and a touch display screen is fixedly installed on the outer side of the welding equipment box. According to the invention, through the arrangement of the control part, various parameters related to friction heat can be coordinated, the condition that the parameters are adjusted independently is avoided, and the speed sensor on the inner wall of the mobile platform can feed back the operation condition of the mobile platform, help the control part to adjust the related parameters and reduce the defects of weld bubbles, cracks and the like; the quality consistency during batch welding is improved, an operator can conveniently adjust equipment parameters through a touch display screen, a pressurization air cylinder of a pressurization driving assembly is matched with a control part, pressurization parameters and other welding parameters can be coordinated, and the welding effect is further optimized.

Description

Technical Field

[0001] This invention relates to the field of welding equipment for automotive thermoplastic structural parts, and in particular to a linear vibration friction welding device. Background Technology

[0002] In the automotive industry, thermoplastic materials such as PP6A-6T nylon are widely used in the manufacture of core structural components such as cylinder head covers and oil pans for large commercial vehicles due to their high strength, aging resistance, and impact resistance. These components need to withstand the high temperatures and vibrations of the engine, requiring extremely high precision in welding, weld sealing, and strength, which directly affects the engine's performance in preventing oil leaks and gas flow.

[0003] Currently, linear vibration friction welding equipment on the market still has certain limitations in practical applications. Existing vibration welding equipment lacks precise and coordinated control of key frictional heat parameters; the adjustments of each parameter are independent and lack linkage, resulting in poor controllability of welding parameters. This easily leads to defects such as bubbles and cracks in the weld, seriously affecting the strength and sealing of the weld joint, and reducing the consistency of welding quality in mass production. Furthermore, the vibrating unit experiences high energy loss during operation and insufficient vibration frequency stability, easily exhibiting frequency drift. In addition, when welding heavy components for large commercial vehicles, the low reset accuracy of the vibration mechanism easily causes workpiece displacement after welding, failing to meet the high-precision assembly requirements of subsequent workpieces and engine blocks, thus restricting the assembly quality of heavy components. Moreover, the working environment is poor; the high-speed friction of the workpiece contact surface and the operation of the vibration mechanism during linear vibration friction welding generate severe noise pollution, which directly diffuses into the working environment, seriously affecting the health of operators over a long period. Therefore, those skilled in the art provide a linear vibration friction welding device to solve the problems mentioned in the background. Summary of the Invention

[0004] The purpose of this application is to provide a linear vibration friction welding device to solve the problems of high energy loss and insufficient frequency stability of the vibrating part, as well as low reset accuracy after welding of heavy-duty components for commercial vehicles, which easily causes workpiece displacement and fails to meet the high-precision assembly requirements with the engine block.

[0005] The linear vibration friction welding equipment provided in this application adopts the following technical solution: A linear vibration friction welding equipment includes a welding equipment box, the inside of which is integrated with a control unit, a touch screen is fixedly installed on the outside of the welding equipment box, a switch control base is fixedly installed on the outside of the welding equipment box, a welding cavity is opened inside the welding equipment box, a sound insulation plate is fixedly connected inside the welding cavity, an upper base is fixedly installed on the top inner side of the sound insulation plate, a vibration component is arranged below the upper base, a high-frequency servo driver is fixedly installed on the outside of the upper base, the high-frequency servo driver and the vibration component are electrically connected, an upper fixture is arranged below the upper base, a lower fixture is arranged below the upper fixture, two symmetrical side positioning plates are fixedly connected to the upper surface of the lower fixture, two symmetrical clamping plates are arranged between the two side positioning plates, and a pressure driving component is arranged inside the welding equipment box; The vibration assembly includes a stator base fixedly connected to the bottom surface of the upper base. Multiple low-loss electronic coils are fixedly installed on the inner side of the stator base. A stator block is fixedly connected to the outer side of each low-loss electronic coil. A moving platform is slidably connected to the outer side of the stator base. A moving block is fixedly connected to the inner side of the moving platform. Return springs are fixedly connected to both sides of the moving platform, and the other end of the return spring is fixedly connected to the inner wall of the sound insulation plate. The input terminal of the high-frequency servo driver is electrically connected to an external power supply. Through the above technical solution, by setting up a control unit, the operating data of the vibration component and the pressure drive component can be collected in real time. The parameters are adjusted through a closed-loop control algorithm to ensure the stability of the welding process of large parts. Then, by using a low-loss electronic coil in conjunction with the mover block, the energy loss of the vibration component during operation can be reduced. At the same time, by using a high-frequency servo driver in conjunction with the vibration component, the stability of the vibration frequency can be improved and frequency drift can be reduced. Finally, the return spring can assist the moving platform in resetting, improving the problem of insufficient resetting accuracy of the vibration mechanism, thereby reducing the displacement of the workpiece after welding and facilitating the subsequent assembly of the workpiece with the engine cylinder block.

[0006] Furthermore, the control unit includes a microprocessor and a welding parameter database. The touch screen and the switch control base are both electrically connected to the control unit. A speed sensor is fixedly installed on the inner wall of the mobile platform and is electrically connected to the control unit. Through the above technical solution, the control unit can coordinate various parameters related to frictional heat, avoiding independent adjustment of each parameter. The touch screen facilitates operators to adjust equipment parameters, and the speed sensor can provide feedback on the operation of the moving platform, helping the control unit to adjust relevant parameters, reducing defects such as weld bubbles and cracks, and improving the quality consistency during batch welding.

[0007] Furthermore, the moving block and the low-loss electronic coil are close to each other, a track groove is provided on the outer side of the stator base, the outer side of the moving platform is slidably connected to the inner wall of the track groove, and a first guide telescopic rod is provided on the inner side of each reset spring. The fixed part of the first guide telescopic rod is fixedly connected to the inner side of the sound insulation plate, and the telescopic part of the first guide telescopic rod is fixedly connected to the outer side of the moving platform. Through the above technical solution, the moving block is close to the low-loss electronic coil, which can better transmit power and reduce energy waste. Then, the track groove can guide the movement of the moving platform, making the moving platform move more smoothly. Then, the first guide telescopic rod can limit the deformation of the reset spring, avoid the reset spring from deforming, further improve the reset effect of the moving platform, and reduce the displacement of the workpiece after welding.

[0008] Furthermore, the upper fixture includes an upper base plate fixedly connected to the bottom surface of the mobile platform. A placement frame is fixedly connected to the bottom surface of the upper base plate. Two symmetrical first electric push rods are fixedly connected to the bottom surface of the upper base plate. The first electric push rods are electrically connected to the control unit. A clamping plate is fixedly connected to the output end of each of the two first electric push rods. Openings for the clamping plates to pass through are provided on both sides of the upper base plate. The above technical solution utilizes the placement frame to place the workpiece to be welded above. Then, the first electric push rod can drive the clamping plate to move, thereby clamping and fixing the workpiece above, preventing the workpiece from loosening during vibration welding and reducing weld defects.

[0009] Furthermore, a clamping drive assembly is provided on the inner side of the lower fixture. The clamping drive assembly includes a component cavity opened on the inner side of the lower fixture. A bidirectional screw is rotatably connected to the inner side of the component cavity. Moving blocks are threaded to the outer sides of the threaded grooves on both sides of the bidirectional screw. The outer sides of the two moving blocks are respectively fixedly connected to the outer sides of the two clamping plates. A servo motor is fixedly embedded on the outer side of the lower fixture, and the output end of the servo motor is fixedly connected to the end of the bidirectional screw. Through the above technical solution, the servo motor can drive the bidirectional screw to rotate, and the rotation of the bidirectional screw can drive the moving block to move, which in turn drives the fixture plate to move, thereby achieving the clamping and fixing of the workpiece to be welded below. With the side positioning plate, the positioning of the workpiece below can be more stable, reducing displacement during welding and facilitating subsequent assembly with the engine cylinder block.

[0010] Furthermore, the upper surface of the lower fixture has two symmetrical guide grooves, and the inner wall of the guide grooves is connected to the inner wall of the component cavity. The outer sides of the two moving blocks are slidably connected to the inner walls of the two guide grooves respectively. The above technical solution utilizes the guide groove to guide the movement of the moving block, ensuring smooth movement of the moving block, avoiding displacement of the moving block that could cause positional deviation of the fixture plate, ensuring the clamping effect of the fixture plate on the workpiece below, and reducing workpiece displacement during welding.

[0011] Furthermore, the pressurization drive assembly includes a pressurization cylinder, which is electrically connected to the control unit. The outer side of the pressurization cylinder is fixedly connected to the bottom surface of the sound insulation plate, and the output end of the pressurization cylinder is fixedly connected to the bottom surface of the lower fixture. Four rectangular arrays of second guide telescopic rods are fixedly connected to the inner wall of the sound insulation plate, and the telescopic ends of the second guide telescopic rods are fixedly connected to the bottom surface of the lower fixture. Through the above technical solution, the pressurizing cylinder of the pressurizing drive component can drive the lower fixture to move up and down, thereby pressurizing the contact surface of the upper and lower workpieces. In conjunction with the control unit, the pressurizing parameters can be coordinated with other welding parameters to reduce defects such as weld bubbles and cracks. Then, the second guide telescopic rod can guide the movement of the lower fixture, making the movement of the lower fixture more stable, ensuring uniform pressurization, and improving welding quality.

[0012] Furthermore, the welding equipment box has a placement opening on its outer side, and mounting rods are fixedly embedded on both the left and right sides of the placement opening. Multiple safety sensors arranged at equal intervals are fixedly connected to the side of the two mounting rods that are close to each other. The safety sensors are electrically connected to the control unit. The above technical solution utilizes the function of safety sensors to detect the condition at the placement opening, preventing operators from accidentally touching the inside of the equipment during welding and protecting their safety. The safety sensors work in conjunction with the control unit to automatically open the soundproof door when an abnormality is detected, preventing injury to operators and improving the safety of equipment operation.

[0013] Furthermore, door cavities are provided on both the upper and lower sides of the placement opening. Soundproof doors are slidably connected to the inner sides of both door cavities. Observation glass is installed on the outer sides of both soundproof doors. Sealing and soundproofing strips are fixedly connected to the sides of the two soundproof doors that are close to each other. The two sealing and soundproofing strips are staggered and made of rubber. Two symmetrical second electric push rods are fixedly installed on the inner side of the soundproofing plate. Connecting plates are fixedly connected to the output ends of the two second electric push rods. The outer sides of the two connecting plates are respectively fixedly connected to the outer sides of the two soundproof doors. Both second electric push rods are electrically connected to the control unit. Through the above technical solutions, the placement opening can be sealed by utilizing the soundproof door. With the help of sealing soundproof strips and soundproof panels, the noise diffusion generated during welding can be reduced, the working environment can be improved, and the health of operators can be protected. At the same time, the rubber sealing soundproof strips can improve the sealing and sound insulation effect, and the staggered arrangement can further enhance the sound insulation and sealing performance. Beneficial effects

[0014] In summary, this application includes at least one of the following beneficial technical effects: This invention provides a linear vibration friction welding device. By setting up a control unit, it can coordinate various parameters related to frictional heat, avoiding the situation where the adjustment of each parameter is independent. The speed sensor on the inner wall of the moving platform can provide feedback on the operation of the moving platform, helping the control unit to adjust relevant parameters, reducing defects such as weld bubbles and cracks, and improving the quality consistency during batch welding. Then, the touch screen allows the operator to adjust the equipment parameters. The pressurization cylinder of the pressurization drive component, in conjunction with the control unit, can coordinate the pressurization parameters with other welding parameters, further optimizing the welding effect.

[0015] This invention provides a linear vibration friction welding device. By setting up a vibration component, in which a low-loss electronic coil works in conjunction with a moving block, the energy loss of the vibration component during operation can be reduced. Then, by using a high-frequency servo driver in conjunction with the vibration component, the stability of the vibration frequency can be improved. The track groove can guide the moving platform, making the moving platform move more smoothly. Then, by using the cooperation of a return spring and a first guide telescopic rod, the problem of insufficient return accuracy of the vibration mechanism can be improved, reducing workpiece displacement after welding and facilitating the subsequent assembly of the workpiece with the engine cylinder block.

[0016] This invention provides a linear vibration friction welding device. By combining sound insulation panels, sound insulation doors, and sealing sound insulation strips, the noise generated during the welding process can be blocked inside the welding cavity, reducing noise diffusion and improving the working environment. At the same time, the rubber sealing sound insulation strips are staggered, which can improve the sealing and sound insulation effect, prevent noise from directly diffusing into the external environment, and protect the health of the operators. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the vibration component, high-frequency servo driver, and upper fixture of the present invention; Figure 4 This is a schematic diagram of the internal structure of the vibration assembly of the present invention; Figure 5 This is a three-dimensional structural diagram of the clamping drive assembly, pressurizing cylinder, and second guide telescopic rod of the present invention; Figure 6 This is a schematic diagram of the internal structure of the clamping drive assembly of the present invention; Figure 7 This is a three-dimensional structural diagram of the soundproof door of the present invention.

[0018] The components include: 1. Welding equipment box; 2. Touch screen display; 3. Switch control base; 4. Welding cavity; 5. Sound insulation board; 6. Upper base; 7. Vibration assembly; 701. Stator base; 702. Low-loss electronic coil; 703. Stator block; 704. Moving platform; 705. Moving block; 706. Track groove; 707. Return spring; 708. First guide telescopic rod; 8. High-frequency servo driver; 9. Upper fixture; 901. Upper base plate; 902. Placement frame; 903. First electric push rod. ; 904, clamping plate; 10, lower jig; 11, clamping drive assembly; 1101, assembly cavity; 1102, bidirectional screw; 1103, servo motor; 1104, moving block; 1105, guide groove; 12, side positioning plate; 13, clamping plate; 14, pressurizing cylinder; 15, second guide telescopic rod; 16, mounting rod; 17, safety sensor; 18, door cavity; 19, soundproof door; 20, observation glass; 21, sealing and soundproofing strip; 22, second electric push rod; 23, connecting plate. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0020] Example 1: A linear vibration friction welding device, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a welding equipment box 1, which integrates a control unit. This control unit collects real-time operating data from the vibration assembly 7 and the pressure drive assembly, and adjusts parameters using a closed-loop control algorithm to ensure stable welding of large components. A touchscreen display 2 is fixedly mounted on the outside of the welding equipment box 1. This display allows for the visual setting, modification, and storage of welding parameters, supports multiple recipe calls, and displays real-time welding progress, operating status at each stage, parameter curves, and fault information, facilitating operator monitoring and debugging and improving operational convenience. A switch control base 3 is fixedly installed on the outside. The switch control base 3 includes special switches such as an emergency stop switch, a clamping switch, and a start switch, which are used to control the operation of the vibration welding equipment. The emergency stop switch can stop the machine in case of an emergency. The welding equipment box 1 has a welding cavity 4 inside. A sound insulation plate 5 is fixedly connected inside the welding cavity 4. An upper base 6 is fixedly installed on the top inner side of the sound insulation plate 5. A vibration component 7 is arranged below the upper base 6. A high-frequency servo driver 8 is fixedly installed on the outside of the upper base 6. The high-frequency servo driver 8 and the vibration component 7 are electrically connected.

[0021] Reference Figure 3 and Figure 4The vibration assembly 7 includes a stator base 701 fixedly connected to the bottom surface of the upper base 6. Multiple equidistantly arranged low-loss electronic coils 702 are fixedly mounted on the inner side of the stator base 701. A stator block 703 is fixedly connected to the outer side of each low-loss electronic coil 702. A moving platform 704 is slidably connected to the outer side of the stator base 701. A moving block 705 is fixedly connected to the inner side of the moving platform 704. Return springs 707 are fixedly connected to both sides of the moving platform 704, and the other end of each return spring 707 is fixedly connected to the inner wall of the sound insulation plate 5. The return springs 707 and the low-loss electronic coils 702 are optimized using a finite element analysis program. The low-loss electronic coils 702 are wound with high-conductivity copper material, and the number of coil turns and wire diameter are optimized using FEM to reduce power loss and improve energy conversion. To improve efficiency and ensure the vibration frequency remains stable within an adjustable range of 20-200Hz, the aforementioned return spring 707 is made of high-strength elastic alloy. The spring stiffness and deformation stroke are adapted to the vibration frequency through finite element analysis, effectively buffering vibration impact while ensuring the smoothness of linear vibration. The input terminal of the high-frequency servo driver 8 is electrically connected to the external power supply. By using the low-loss electronic coil 702 in conjunction with the mover block 705, the energy loss of the vibration component 7 during operation can be reduced. At the same time, by using the high-frequency servo driver 8 in conjunction with the vibration component 7, the stability of the vibration frequency can be improved, reducing frequency drift. Then, the return spring 707 can assist the moving platform 704 in resetting, improving the problem of insufficient resetting accuracy of the vibration mechanism, thereby reducing the displacement of the workpiece after welding and facilitating the subsequent assembly of the workpiece with the engine cylinder block.

[0022] Reference Figure 4 The mover block 705 and the low-loss electronic coil 702 are close to each other. The outer side of the stator base 701 is provided with a track groove 706. The outer side of the moving platform 704 is slidably connected to the inner wall of the track groove 706. Each return spring 707 is provided with a first guide telescopic rod 708 on its inner side. The fixed part of the first guide telescopic rod 708 is fixedly connected to the inner side of the sound insulation plate 5, and the telescopic part of the first guide telescopic rod 708 is fixedly connected to the outer side of the moving platform 704. The mover block 705 and the low-loss electronic coil 702 are close to each other, which can better transmit power and reduce energy waste. Then, the track groove 706 can guide the movement of the moving platform 704, making the movement of the moving platform 704 more stable. Then, the first guide telescopic rod 708 can limit the deformation of the return spring 707, avoid the return spring 707 from deforming, further improve the return effect of the moving platform 704, and reduce the displacement of the workpiece after welding.

[0023] Reference Figure 2 and Figure 3An upper fixture 9 is provided below the upper base 6. The upper fixture 9 includes an upper base plate 901 fixedly connected to the bottom surface of the moving platform 704. A placement frame 902 is fixedly connected to the bottom surface of the upper base plate 901. Two symmetrical first electric push rods 903 are fixedly connected to the bottom surface of the upper base plate 901. The first electric push rods 903 are electrically connected to the control unit. The output ends of the two first electric push rods 903 are fixedly connected to clamping plates 904. Openings for the clamping plates 904 to pass through are provided on both sides of the upper base plate 901. The placement frame 902 can be used to place the workpiece to be welded above. Then, the first electric push rods 903 can drive the clamping plates 904 to move, thereby clamping and fixing the workpiece above, avoiding loosening of the workpiece during vibration welding, and reducing weld defects.

[0024] Reference Figure 2 , Figure 5 and Figure 6 A lower fixture 10 is provided below the upper fixture 9. A clamping drive assembly 11 is provided inside the lower fixture 10. The clamping drive assembly 11 includes a component cavity 1101 opened inside the lower fixture 10. A bidirectional screw 1102 is rotatably connected to the inner side of the component cavity 1101. Moving blocks 1104 are threadedly connected to the outer sides of the threaded grooves on both sides of the bidirectional screw 1102. The outer sides of the two moving blocks 1104 are respectively fixedly connected to the outer sides of the two clamping plates 13. A servo motor 1103 is fixedly embedded in the outer side of the lower fixture 10, and the output end of the servo motor 1103 is fixedly connected to the end of the bidirectional screw 1102. The servo motor 1103 can drive the bidirectional screw 1102 to rotate. The rotation of the bidirectional screw 1102 can drive the moving blocks 1104 to move, thereby driving the clamping plates 13 to move, realizing the clamping and fixing of the workpiece to be welded below. With the cooperation of the side positioning plate 12, it can... To ensure more stable positioning of the workpiece below, reduce displacement during welding, and facilitate subsequent assembly with the engine block, two symmetrical guide grooves 1105 are provided on the upper surface of the lower fixture 10. The inner wall of the guide grooves 1105 is connected to the inner wall of the component cavity 1101. The outer sides of the two moving blocks 1104 are slidably connected to the inner walls of the two guide grooves 1105 respectively. The guide grooves 1105 guide the movement of the moving blocks 1104, ensuring smooth movement of the moving blocks 1104 and preventing the moving blocks 1104 from shifting, which would cause the position deviation of the clamping plate 13. This ensures the clamping effect of the clamping plate 13 on the workpiece below and reduces displacement of the workpiece during welding. Two symmetrical side positioning plates 12 are fixedly connected to the upper surface of the lower fixture 10, and two symmetrical clamping plates 13 are provided between the two side positioning plates 12. A pressure drive assembly is provided inside the welding equipment box 1.

[0025] Reference Figure 1The control unit includes a microprocessor and a welding parameter database. This control unit can issue commands and provide status feedback. It also integrates a fault alarm module to respond promptly to abnormal conditions and prevent batch defects. The touchscreen display 2 and the switch control base 3 are both electrically connected to the control unit. A speed sensor is fixedly installed on the inner wall of the moving platform 704 and is electrically connected to the control unit. Utilizing the control unit, various parameters related to frictional heat can be coordinated, avoiding independent adjustments to each parameter and improving the controllability of welding parameters. The touchscreen display 2 allows operators to easily adjust equipment parameters. The speed sensor then provides feedback on the operating status of the moving platform 704, helping the control unit adjust relevant parameters, reducing defects such as weld bubbles and cracks, and improving the quality consistency during batch welding.

[0026] Example 2: A linear vibration friction welding device, referring to... Figure 2 and Figure 5 The pressurization drive assembly includes a pressurization cylinder 14, which applies stable pressure to the upper and lower workpieces. This pressure, combined with the vibration assembly 7, generates frictional heat, meeting the heavy-duty load-bearing requirements of large commercial vehicle cylinder head covers and oil pans. The pressurization direction is perpendicular to the linear vibration direction of the vibration assembly 7, ensuring uniform friction on the contact surfaces of large parts and preventing insufficient local melting that could affect sealing. The pressurization cylinder 14 is electrically connected to the control unit. The outer side of the pressurization cylinder 14 is fixedly connected to the bottom surface of the sound insulation plate 5, and the output end of the pressurization cylinder 14 is fixedly connected to the bottom surface of the lower fixture 10. A pressure sensor is fixedly installed inside the contact portion between the output end of the pressurization cylinder 14 and the lower fixture 10, and this pressure sensor is electrically connected to the control unit. The pressure sensor collects data in real time. Pressure data is fed back to the control unit to form a pressure closed-loop control, ensuring stable pressure during welding and adapting to the melting pressure requirements of PP6A-6T nylon material. The inner wall of the sound insulation plate 5 is fixedly connected with four rectangular arrays of second guide telescopic rods 15, and the telescopic ends of the second guide telescopic rods 15 are fixedly connected to the bottom surface of the lower fixture 10. The pressure cylinder 14 of the pressure drive assembly can drive the lower fixture 10 to move up and down, thereby pressurizing the contact surface of the upper and lower workpieces. In conjunction with the control unit, the pressure parameters can be coordinated with other welding parameters to reduce defects such as weld bubbles and cracks. Then, the second guide telescopic rods 15 can guide the movement of the lower fixture 10, making the movement of the lower fixture 10 more stable, ensuring uniform pressure, and improving welding quality.

[0027] Reference Figure 1 and Figure 2The welding equipment box 1 has a placement opening on its outer side. Mounting rods 16 are fixedly embedded on both sides of the placement opening. Multiple safety sensors 17 are fixedly connected to the side of the two mounting rods 16 that are close to each other. The safety sensors 17 are electrically connected to the control unit. By utilizing the function of the safety sensors 17, the situation at the placement opening can be detected to prevent operators from accidentally touching the inside of the equipment during the welding process, thus protecting the safety of the operators. The safety sensors 17 work together with the control unit to automatically open the soundproof door 19 when an abnormality is detected, thus preventing injury to the operators and improving the safety of equipment operation.

[0028] Reference Figure 2 and Figure 7 The welding equipment box 1 has door cavities 18 on both the upper and lower sides of the placement opening. Soundproof doors 19 are slidably connected to the inner sides of both door cavities 18, and observation glass 20 is installed on the outer sides of both soundproof doors 19. Sealing soundproof strips 21 are fixedly connected to the sides of the two soundproof doors 19 that are close to each other. The welding equipment box 1 is made of soundproof steel plate, forming a double-layer soundproof structure with the internal soundproof plate 5, wrapping around the vibration component 7 and the outside of the workpiece welding area. This can reduce welding noise from above 85dB to below 60dB, optimizing the working environment and protecting the hearing health of operators. The two sealing soundproof strips 21 are staggered and are made of rubber. The soundproof panel 5 is made of rubber and has two symmetrical second electric push rods 22 fixedly installed on its inner side. The output ends of the two second electric push rods 22 are fixedly connected to the connecting plates 23. The outer sides of the two connecting plates 23 are respectively fixedly connected to the outer sides of the two soundproof doors 19. The two second electric push rods 22 are electrically connected to the control unit. By utilizing the soundproof doors 19, the placement opening can be closed. In conjunction with the sealing soundproof strips 21 and the soundproof panel 5, the noise diffusion generated during welding can be reduced, the working environment can be improved, and the health of the operators can be protected. At the same time, the rubber sealing soundproof strips 21 can improve the sealing and soundproofing effect. The staggered arrangement can further enhance the soundproofing and sealing performance.

[0029] The implementation principle of this application embodiment is as follows: When using the vibration friction welding equipment, firstly, the operator starts the equipment through the switch control seat 3, sets the relevant welding parameters with the help of the touch screen 2, and transmits the parameter information to the control unit and coordinates with the welding parameter database. Then, the workpieces to be welded are placed on the placement frame 902 of the upper fixture 9 and the lower fixture 10 respectively. At this time, the safety sensor 17 detects the situation at the placement opening in real time. If the operator does not retract his arm in time, the safety sensor 17 detects an abnormality. The control unit receives the data and controls the soundproof door 19 to always be open to ensure personnel safety. The control unit controls the first electric push rod 903 to drive the clamping plate 904 to move and clamp and fix the upper workpiece. At the same time, it controls the servo motor 1103 to start, drives the bidirectional screw 1102 to rotate, and the moving block 1104 moves along the guide groove 1105, driving the clamping plate 13 to cooperate with the side positioning plate 12 to clamp and position the lower workpiece. After the positioning is completed, the control unit controls the second electric push rod 22 to drive the soundproof door 19 to close through the connecting plate 23. The sealing soundproof strip 21 cooperates with the soundproof plate 5 to block the diffusion of noise. Then, the control unit controls the high-frequency servo driver 8 to start, converting the industrial frequency AC power into high-frequency electrical energy adapted to the vibration component 7, and precisely adjusting the output power to ensure that the vibration component receives stable energy input and that the vibration component 7 operates stably. At this time, the high-frequency electrical energy is delivered to the low-loss electronic coil 702, which works with the mover block 705 to drive the moving platform 704 to vibrate linearly along the track groove 706. While vibrating, the speed sensor feeds back the operation of the moving platform 704 to the control unit, which adjusts the relevant parameters in real time. When the vibration is completed, the control unit triggers the vibration component 7 to be de-energized. At this time, the reset spring 707 and the first guide telescopic rod 708 assist the moving platform 704 to move smoothly and reset. At the same time, the control unit controls the pressurizing cylinder 14 to start, driving the lower fixture 10 to rise along the second guide telescopic rod 15, applying pressure to the contact surface of the upper and lower workpieces. At this time, the vibration component 7 causes the contact surface of the workpieces to generate heat through friction, achieving fusion bonding. Finally, after the welding is completed, each component resets in sequence, the soundproof door 19 opens, and the operator takes out the welded workpiece, completing the entire welding operation.

Claims

1. A linear vibration friction welding device, comprising a welding equipment housing (1), characterized in that: The welding equipment box (1) integrates a control unit inside. A touch screen display (2) is fixedly installed on the outside of the welding equipment box (1). A switch control base (3) is fixedly installed on the outside of the welding equipment box (1). A welding cavity (4) is opened inside the welding equipment box (1). A sound insulation board (5) is fixedly connected inside the welding cavity (4). An upper base (6) is fixedly installed on the inner top of the sound insulation board (5). A vibration component (7) is arranged below the upper base (6). A high-frequency servo driver (8) is fixedly installed on the outside of the upper base (6). The high-frequency servo driver (8) and the vibration component (7) are electrically connected. An upper fixture (9) is provided below the upper base (6). A lower fixture (10) is provided below the upper fixture (9). Two symmetrical side positioning plates (12) are fixedly connected to the upper surface of the lower fixture (10). Two symmetrical clamping plates (13) are provided between the two side positioning plates (12). A pressure driving component is provided inside the welding equipment box (1). The vibration assembly (7) includes a stator base (701) fixedly connected to the bottom surface of the upper base (6). Multiple low-loss electronic coils (702) arranged at equal intervals are fixedly installed on the inner side of the stator base (701). A stator block (703) is fixedly connected to the outer side of each low-loss electronic coil (702). A moving platform (704) is slidably connected to the outer side of the stator base (701). A moving block (705) is fixedly connected to the inner side of the moving platform (704). A return spring (707) is fixedly connected to both sides of the moving platform (704), and the other end of the return spring (707) is fixedly connected to the inner wall of the sound insulation plate (5). The input end of the high-frequency servo driver (8) is electrically connected to an external power supply.

2. The linear vibration friction welding equipment according to claim 1, characterized in that: The control unit includes a microprocessor and a welding parameter database. The touch screen (2) and the switch control base (3) are both electrically connected to the control unit. A speed sensor is fixedly installed on the inner wall of the mobile platform (704), and the speed sensor is electrically connected to the control unit.

3. The linear vibration friction welding equipment according to claim 1, characterized in that: The moving block (705) and the low-loss electronic coil (702) are close to each other. The stator base (701) has a track groove (706) on its outer side. The outer side of the moving platform (704) is slidably connected to the inner wall of the track groove (706). Each reset spring (707) has a first guide telescopic rod (708) on its inner side. The fixed part of the first guide telescopic rod (708) is fixedly connected to the inner side of the sound insulation plate (5). The telescopic part of the first guide telescopic rod (708) is fixedly connected to the outer side of the moving platform (704).

4. The linear vibration friction welding equipment according to claim 1, characterized in that: The upper fixture (9) includes an upper base plate (901) fixedly connected to the bottom surface of the mobile platform (704). A placement frame (902) is fixedly connected to the bottom surface of the upper base plate (901). Two symmetrical first electric push rods (903) are fixedly connected to the bottom surface of the upper base plate (901). The first electric push rods (903) are electrically connected to the control unit. The output ends of the two first electric push rods (903) are fixedly connected to clamps (904). Openings for the clamps (904) to pass through are provided on both sides of the upper base plate (901).

5. The linear vibration friction welding equipment according to claim 1, characterized in that: The lower fixture (10) is provided with a clamping drive assembly (11) on its inner side. The clamping drive assembly (11) includes a component cavity (1101) opened on the inner side of the lower fixture (10). A bidirectional screw (1102) is rotatably connected to the inner side of the component cavity (1101). Moving blocks (1104) are threadedly connected to the outer sides of the threaded grooves on both sides of the bidirectional screw (1102). The outer sides of the two moving blocks (1104) are respectively fixedly connected to the outer sides of the two clamping plates (13). A servo motor (1103) is fixedly embedded on the outer side of the lower fixture (10), and the output end of the servo motor (1103) is fixedly connected to the end of the bidirectional screw (1102).

6. The linear vibration friction welding equipment according to claim 5, characterized in that: The upper surface of the lower fixture (10) has two symmetrical guide grooves (1105), and the inner wall of the guide groove (1105) is connected to the inner wall of the component cavity (1101). The outer sides of the two moving blocks (1104) are respectively slidably connected to the inner walls of the two guide grooves (1105).

7. The linear vibration friction welding equipment according to claim 1, characterized in that: The pressurization drive assembly includes a pressurization cylinder (14), which is electrically connected to the control unit. The outer side of the pressurization cylinder (14) is fixedly connected to the bottom surface of the sound insulation plate (5), and the output end of the pressurization cylinder (14) is fixedly connected to the bottom surface of the lower fixture (10). The inner wall of the sound insulation plate (5) is fixedly connected to four rectangular arrays of second guide telescopic rods (15), and the telescopic ends of the second guide telescopic rods (15) are fixedly connected to the bottom surface of the lower fixture (10).

8. The linear vibration friction welding equipment according to claim 1, characterized in that: The welding equipment box (1) has a placement opening on the outside. Mounting rods (16) are fixedly embedded on both the left and right sides of the placement opening. Multiple safety sensors (17) are fixedly connected to each other on the side of the two mounting rods (16) that are close to each other. The safety sensors (17) are electrically connected to the control unit.

9. A linear vibration friction welding device according to claim 8, characterized in that: The upper and lower sides of the placement opening are provided with door cavities (18). The inner sides of the two door cavities (18) are slidably connected with soundproof doors (19). The outer sides of the two soundproof doors (19) are equipped with observation glass (20). The sides of the two soundproof doors (19) that are close to each other are fixedly connected with sealing soundproof strips (21). The two sealing soundproof strips (21) are staggered. The sealing soundproof strips (21) are made of rubber. The inner side of the soundproof plate (5) is fixedly installed with two symmetrical second electric push rods (22). The output ends of the two second electric push rods (22) are fixedly connected with connecting plates (23). The outer sides of the two connecting plates (23) are respectively fixedly connected to the outer sides of the two soundproof doors (19). The two second electric push rods (22) are electrically connected to the control unit.

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