Air conditioner outdoor unit control panel series inductor processing device

Abstract

The utility model discloses a machining device for series inductors of an air conditioner outdoor unit control panel, and relates to the technical field of welding machining. Comprising a machining platform, the machining platform is provided with a machining mechanism used for connecting an air conditioner outdoor unit control panel with an inductor in series, and the machining mechanism comprises the steps that the control panel installed on the machining platform is subjected to air blowing heat dissipation, heat on the surface of the control panel can be taken away in time, and the temperature of the control panel is controlled within a reasonable range; the problems of element aging, welding spot failure and the like caused by overheating are avoided, the electrical performance and the service life of the control panel are effectively protected, the machining device can continuously and stably operate, frequent shutdown and cooling are not needed, and then buffering rods and buffering blocks are arranged to conduct buffering on a buffering shell through damping springs and damping supporting rods; pressure generated when the welding gun makes contact with the inductor and the control panel is effectively reduced, deformation and damage of parts caused by too large pressure are prevented, and it is guaranteed that the performance and quality of the inductor and the control panel are not affected.

Description

Technical Field

[0001] This utility model relates to the field of welding processing technology, specifically to a processing device for series inductors on the control board of an air conditioner outdoor unit. Background Technology

[0002] With the rapid development of the air conditioning industry, the requirements for the performance and stability of air conditioner outdoor unit control boards are increasing. As a key electronic component in the air conditioner outdoor unit control board, the soldering quality of the series inductor directly affects the overall performance of the control board and the operational reliability of the air conditioner. In existing technologies, the soldering of series inductors in air conditioner outdoor unit control boards typically employs traditional processing equipment and processes.

[0003] The main process of machining the series inductor on the control board of the air conditioner outdoor unit is to weld the series inductor onto the control board to achieve electrical connection and enable the inductor to play a role in the circuit. The control board needs to be fixed in place.

[0004] Reference patent (Publication No.: CN210703381U, Publication Date: 2020-06-09) provides a glass breaker circuit board welding clamping device, including a base, a pair of clamping components disposed above the base, and a driving component for driving the pair of clamping components to move closer or further apart. Each clamping component includes a clamping rod perpendicular to the base, a pair of clamping heads for clamping the circuit board, a rotating shaft fixedly connected to the clamping heads, and a spring pin for fixing the rotating shaft to the clamping rod. The driving component includes a lead screw, a nut threadedly connected to the lead screw, and a servo motor for driving the lead screw to rotate. One clamping rod is fixedly connected to the base, and the other clamping rod is fixedly connected to the nut. This device allows for quick and accurate adjustment of the clamping distance and angle to adapt to different product specifications and different operator habits, ensuring product processing efficiency and accuracy.

[0005] Based on the aforementioned patents, in terms of control board fixing, some equipment uses simple mechanical clamps to hold the control board. The clamping method often only fixes the control board from both sides, which is difficult to adapt to control boards of different shapes and sizes. During the welding process, the control board is prone to movement, shaking, and bulging. At the same time, the large amount of heat generated during welding can easily accumulate on the control board, causing the control board temperature to be too high. In addition, the welding gun generates a large pressure when it comes into contact with the control board and the series inductor. Existing processing equipment lacks effective buffering measures, and this pressure can easily cause deformation or damage to the inductor and control board. Therefore, this utility model provides a processing device for series inductor of air conditioner outdoor unit control board. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a processing device for series inductors on the control board of an air conditioner outdoor unit. This device solves the problems of control board fixing, where some equipment uses simple mechanical clamps, often only fixing from both sides, making it difficult to adapt to control boards of different shapes and sizes. Furthermore, during welding, the control board is prone to movement, shaking, and bulging. Additionally, the large amount of heat generated during welding easily accumulates on the control board, causing it to overheat. Moreover, the welding torch generates significant pressure upon contact with the control board and series inductor, and existing processing equipment lacks effective buffering measures, which can easily lead to deformation or damage to the inductor and control board.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a processing device for series inductors on an air conditioner outdoor unit control board, comprising a processing platform, wherein the processing platform is provided with a processing mechanism for series inductors on the air conditioner outdoor unit control board, the processing mechanism comprising:

[0008] The mounting components include a first clamping plate that is slidably connected to the upper end of the processing platform, and the two ends of the first clamping plate are provided with limiting brackets connected by a pushing component;

[0009] The processing component includes ventilation holes evenly distributed on the inner surface of the processing platform. An exhaust pipe connected to the ventilation holes via a heat dissipation component is provided inside the ventilation holes. A buffer shell connected to the processing platform via a drive component is provided at one end of the processing platform. A welding gun connected to the buffer shell via a shock absorption component is provided inside the buffer shell.

[0010] Preferably, the processing platform has sliding grooves on both sides, the two ends of the first clamping plate are slidably connected to the sliding grooves, one end of the processing platform is fixed with a first electric push rod for pushing the first clamping plate, a transmission gear is rotatably connected to the center of the lower end of the processing platform, one end of the first clamping plate is fixed with a connecting bracket, and one end of the connecting bracket is fixed with a toothed rod that meshes with the transmission gear.

[0011] Preferably, the pushing assembly includes a second electric push rod fixed to the inner walls of both ends of the first clamping plate, the limiting bracket is fixedly connected to the telescopic end of the second electric push rod, the limiting bracket has an L-shaped structure, a third electric push rod is fixedly fixed through the limiting bracket in the vertical direction, and the telescopic end of the third electric push rod is fixed to the second clamping plate.

[0012] Preferably, the heat dissipation assembly includes a cavity seat fixed to one side wall of the processing platform, a fan for air injection fixed to one side of the cavity seat, a conduit extending into the processing platform through the cavity seat, and air outlet pipes evenly distributed on the conduit.

[0013] Preferably, the drive assembly includes a support frame fixed at one end of the upper surface of the processing platform, a first slide rail bracket fixed at the top of the support frame, a second slide rail bracket slidably connected to the first slide rail bracket via a lead screw, a slider slidably connected to the second slide rail bracket via a lead screw, a fourth electric push rod fixedly connected vertically through the slider, and a buffer housing fixedly connected to the telescopic end of the fourth electric push rod.

[0014] Preferably, the shock absorption assembly includes a positioning groove formed on the inner wall of the buffer housing, a positioning block slidably connected to the inner wall of the positioning groove, a buffer block fixed to the inner wall of the positioning block, a buffer rod fixed to the lower end of the buffer block, a welding gun fixedly connected to the lower end of the buffer rod, a shock-absorbing spring fixed to the upper end of the buffer block, and the upper end of the shock-absorbing spring fixedly connected to the buffer housing, and a damping support rod provided in the inner ring of the shock-absorbing spring, the damping support rod being fixedly connected to the upper end of the buffer block.

[0015] Beneficial effects

[0016] This utility model provides a device for processing series inductors on the control board of an air conditioner outdoor unit. Compared with the prior art, it has the following advantages:

[0017] Firstly, when welding the series inductor to the control board, the control board is first placed on the processing platform and fixed. Then, the first clamping plate is pushed by the first electric push rod, and slides along the slide groove on the processing platform. At the same time, when the first clamping plate slides, the gear block rod slides simultaneously under the action of the connecting bracket and the first clamping plate, thereby driving the transmission gear to rotate. This allows the other set of clamping plates connected to one side of the transmission gear rod to open and close simultaneously with the first clamping plate, clamping and fixing the control board from both sides. Through gear transmission, the need for push rods on both sides of the processing platform for opening and closing is reduced. With the increased footprint and the first clamping plate positioned close to both sides of the control board, the L-shaped limiting bracket extends and retracts via the second electric push rod, thereby limiting and clamping the control board on all four sides. The second clamping plate descends on the limiting bracket via the third electric push rod, pressing down and clamping the top of the control board to prevent bulging. This multi-directional, all-around clamping method ensures a tight fit to the control board, firmly fixing it regardless of any irregular shapes or protrusions. This avoids issues such as welding position deviation and incomplete soldering caused by control board movement or shaking during series inductor welding, guaranteeing welding accuracy and quality.

[0018] Secondly, the gas generated by the blower in this utility model is evenly distributed to the outlet pipe on the duct through the cavity seat, and then discharged through the ventilation holes evenly opened on the processing platform. This blows air to dissipate heat from the control board installed on the processing platform, which can promptly remove the heat from the surface of the control board and control its temperature within a reasonable range. This avoids problems such as component aging and solder joint failure caused by overheating, effectively protecting the electrical performance and service life of the control board, and enabling the processing device to operate continuously and stably without frequent shutdowns for cooling. Furthermore, the buffer rod and buffer block are cushioned on the buffer shell through shock-absorbing springs and damping support rods, effectively reducing the pressure generated when the welding gun contacts the inductor and control board, preventing excessive pressure from causing deformation and damage to parts, and ensuring that the performance and quality of the inductor and control board are not affected. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the processing platform of this utility model;

[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the bottom structure of the processing platform of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal connection structure of the ventilation hole of this utility model;

[0024] Figure 6 This is a schematic diagram of the slider drive connection structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the internal connection structure of the buffer shell of this utility model.

[0026] In the diagram: 1. Processing platform; 2. Ventilation hole; 201. Conduit; 202. Air outlet pipe; 203. Cavity seat; 204. Fan; 3. Slide groove; 301. First clamping plate; 302. First electric push rod; 4. Second electric push rod; 401. Limiting bracket; 402. Third electric push rod; 403. Second clamping plate; 5. Connecting bracket; 501. Toothed rod; 502. Transmission gear; 6. Support frame; 601. First slide rail bracket; 602. Second slide rail bracket; 603. Slider; 604. Fourth electric push rod; 605. Buffer housing; 7. Positioning groove; 701. Positioning block; 702. Buffer block; 703. Buffer rod; 704. Welding gun; 705. Shock-absorbing spring; 706. Damping support rod. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-7 This utility model provides a technical solution: a processing device for series inductors on an air conditioner outdoor unit control board, including a processing platform 1, on which a processing mechanism for processing series inductors on the air conditioner outdoor unit control board is provided, the processing mechanism including:

[0029] The mounting components include a first clamping plate 301 that is slidably connected to the upper end of the processing platform 1, and the two ends of the first clamping plate 301 are provided with limiting brackets 401 connected by a pushing component;

[0030] The processing components include ventilation holes 2 evenly distributed on the inner surface of the processing platform 1, an air outlet pipe 202 connected to the ventilation holes 2 via a heat dissipation component, a buffer housing 605 connected to one end of the processing platform 1 via a drive component, and a welding gun 704 connected to the buffer housing 605 via a shock absorption component.

[0031] In a preferred embodiment, the processing platform 1 has sliding grooves 3 on both sides, and the two ends of the first clamping plate 301 are slidably connected to the sliding grooves 3. A first electric push rod 302 for pushing the first clamping plate 301 is fixed at one end of the processing platform 1. A transmission gear 502 is rotatably connected to the center of the lower end of the processing platform 1. A connecting bracket 5 is fixed at one end of the first clamping plate 301, and a toothed rod 501 that meshes with the transmission gear 502 is fixed at one end of the connecting bracket 5. The pushing assembly includes a second electric push rod 4 fixed to the inner wall of both ends of the first clamping plate 301. The limiting bracket 401 is fixedly connected to the telescopic end of the second electric push rod 4. The limiting bracket 401 has an L-shaped structure. The third electric push rod 402 is fixedly fixed through the limiting bracket 401 in the vertical direction. The telescopic end of the third electric push rod 402 is fixed with a second clamping plate 403. When welding the series inductor to the control board, the control board is first placed on the processing platform 1 for fixing. Then, the first clamping plate 301 is pushed by the first electric push rod 302. The first clamping plate 301 slides along the slide groove 3 on the processing platform 1. At the same time, the first clamping plate When 301 slides, the toothed rod 501 slides simultaneously under the action of the connecting bracket 5 and the first clamping plate 301, thereby driving the transmission gear 502 to rotate. This allows another set of clamping plates connected to one side of the transmission gear rod 502 to open and close simultaneously with the first clamping plate 301, clamping and fixing the control plate on both sides. Through gear transmission, the increased footprint caused by having push rods on both sides of the processing platform 1 for opening and closing is reduced. Furthermore, when the first clamping plate 301 is close to both sides of the control plate, the L-shaped limiting bracket 401... The second electric push rod 4 extends and retracts, thereby limiting and clamping the four sides of the control board. The second clamping plate 403 descends on the limiting bracket 401 via the third electric push rod 402, pressing down and clamping the top of the control board to prevent it from protruding. This multi-directional and all-round clamping method can tightly fit the control board and firmly fix it regardless of whether the control board has protrusions or other irregular shapes. This avoids problems such as welding position deviation and cold solder joints caused by the movement and shaking of the control board during the series inductor welding process, ensuring welding accuracy and quality.

[0032] Through a gear transmission structure, the first clamping plate 301 is driven by only the first electric push rod 302, which in turn drives the other set of clamping plates to open and close synchronously. This eliminates the need for push rods on both sides of the processing platform 1, effectively reducing the lateral space occupied by the device. In a limited production workshop space, more equipment can be arranged, improving space utilization. The telescopic limit bracket 401 and the liftable second clamping plate 403 can be flexibly adjusted according to control plates of different sizes, shapes, and thicknesses, achieving effective clamping and fixation, thus improving the versatility and applicability of the processing device.

[0033] In a preferred embodiment, the heat dissipation assembly includes a cavity seat 203 fixed to one side wall of the processing platform 1. A fan 204 for air injection is fixed to one side of the cavity seat 203. A conduit 201 extending into the processing platform 1 is fixed through the cavity seat 203. Air outlet pipes 202 are evenly distributed on the conduit 201. When the series inductor is soldered to the control board, the control board is installed on the surface of the processing platform 1. The fan 204 operates, and the gas generated by the fan 204 is evenly distributed through the cavity seat 203 onto the air outlet pipes 202 on the conduit 201. The gas is then discharged through the ventilation holes 2 evenly opened on the processing platform 1, thereby blowing air to dissipate heat from the control board installed on the processing platform 1. This can promptly remove the heat from the surface of the control board, keeping its temperature within a reasonable range and avoiding problems such as component aging and solder joint failure due to overheating. This effectively protects the electrical performance and service life of the control board, enabling the processing device to operate continuously and stably without frequent shutdowns for cooling.

[0034] In a preferred embodiment, the drive assembly includes a support frame 6 fixed to one end of the upper surface of the processing platform 1. A first slide rail bracket 601 is fixed to the top of the support frame 6. A second slide rail bracket 602 is slidably connected to the first slide rail bracket 601 via a lead screw. A slider 603 is slidably connected to the second slide rail bracket 602 via a lead screw. A fourth electric push rod 604 is vertically fixed to the slider 603. A buffer housing 605 is fixedly connected to the telescopic end of the fourth electric push rod 604. During the horizontal adjustment phase, the control system drives the lead screw motor inside the first slide rail bracket 601 to start. The lead screw rotates, causing the second slide rail bracket 602, which is slidably connected to it, to move horizontally on the first slide rail bracket 601. By precisely controlling the number of rotations and direction of the lead screw, the second slide rail bracket 602 is moved to the horizontal coordinate of the target position. Then, the horizontal longitudinal adjustment phase begins. The lead screw motor inside the second slide rail bracket 602 operates under the command of the control system, and the lead screw drives the slider 603 on the second slide rail bracket 601. The slider 603 slides along the horizontal longitudinal direction within the rail bracket 602 until it reaches the longitudinal coordinate of the target position. After completing the horizontal positioning, vertical adjustment begins. The fourth electric push rod 604 extends and retracts under the control of the control system. Since the buffer housing 605 is fixedly connected to the extension end of the fourth electric push rod 604, and the welding gun 704 is installed below the buffer housing 605, the extension and retraction of the fourth electric push rod 604 drives the welding gun 704 to rise and fall vertically, reaching the appropriate welding height. Through the combination of screw drive and electric push rod, the welding gun 704 can be precisely adjusted in three dimensions: horizontal, longitudinal, and vertical. The screw drive has high transmission accuracy and can accurately move the welding gun 704 to the set coordinate position. Combined with the precise extension and retraction of the electric push rod in the vertical direction, the welding gun 704 can be accurately aligned with the welding point of the series inductor on the control board. There is no need for manual adjustment of the position of the welding gun 704, reducing repeated adjustments and time waste caused by human error.

[0035] In a preferred embodiment, the shock-absorbing assembly includes a positioning groove 7 formed on the inner wall of a buffer housing 605. A positioning block 701 is slidably connected to the inner wall of the positioning groove 7. A buffer block 702 is fixed to the inner wall of the positioning block 701. A buffer rod 703 is fixed to the lower end of the buffer block 702. A welding gun 704 is fixedly connected to the lower end of the buffer rod 703. A shock-absorbing spring 705 is fixed to the upper end face of the buffer block 702, and the upper end of the shock-absorbing spring 705 is fixedly connected to the buffer housing 605. A damping support rod 706 is provided on the inner ring of the shock-absorbing spring 705. The damping support rod 706 and the buffer block 702 are connected to each other. 2. The upper end is fixedly connected. When the series inductor is welded to the control board by the welding gun 704, the buffer rod 703 and the buffer block 702 are buffered on the buffer housing 605 by the shock-absorbing spring 705 and the damping support rod 706. This effectively reduces the pressure generated when the welding gun 704 contacts the inductor and the control board, prevents excessive pressure from causing deformation or damage to the parts, and ensures that the performance and quality of the inductor and the control board are not affected. In addition, the buffer block 702 slides up and down along the positioning groove 7 on the inner wall of the buffer housing 605 by the positioning block 701 to ensure stability during buffer compression.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] During operation, when welding the series inductor to the control board, the control board is first placed on the processing platform 1 for fixation. Then, the first clamping plate 301 is pushed by the first electric push rod 302, and the first clamping plate 301 slides along the slide groove 3 on the processing platform 1. At the same time, when the first clamping plate 301 slides, the toothed block rod 501 slides simultaneously under the action of the connecting bracket 5 and the first clamping plate 301, thereby driving the transmission gear 502 to rotate. This allows another set of clamping plates connected to one side of the transmission gear rod 502 to open and close simultaneously with the first clamping plate 301, clamping and fixing the control board on both sides. Through gear transmission, the increased footprint caused by setting push rods on both sides of the processing platform 1 for opening and closing is reduced. When the first clamping plate 301 is close to both sides of the control board, the L-shaped limiting bracket 401 is extended and retracted by the second electric push rod 4, thereby limiting and clamping the control board on all four sides, as well as the second clamping plate. 403 descends on the limit bracket 401 via the third electric push rod 402, pressing down and clamping the top of the control board. Then, by precisely controlling the number of rotations and direction of the lead screw, the second slide rail bracket 602 moves to the horizontal coordinate of the target position. Next, it enters the horizontal and vertical adjustment stage. The lead screw motor inside the second slide rail bracket 602 operates under the command of the control system. The lead screw drives the slider 603 to slide in the horizontal and vertical direction within the second slide rail bracket 602 until the slider 603 reaches the vertical coordinate of the target position. After completing the horizontal positioning, the vertical adjustment begins. The fourth electric push rod 604 performs telescopic movement under the control of the control system. Since the buffer shell 605 is fixedly connected to the telescopic end of the fourth electric push rod 604, and the welding gun 704 is installed below the buffer shell 605, the telescopic movement of the fourth electric push rod 604 drives the welding gun 704 to rise and fall in the vertical direction, so that it reaches the appropriate welding height.

[0038] When the series inductor is soldered to the control board using the welding gun 704, the buffer rod 703 and buffer block 702 are buffered on the buffer housing 605 by the shock-absorbing spring 705 and the damping support rod 706, which effectively reduces the pressure generated when the welding gun 704 contacts the inductor and the control board. The fan 204 is working, and the gas generated by the fan 204 is evenly distributed to the air outlet pipe 202 on the duct 201 through the cavity seat 203. The gas is then discharged through the ventilation holes 2 evenly opened on the processing platform 1, thereby blowing air to dissipate heat from the control board installed on the processing platform 1. This can remove the heat from the surface of the control board in time and keep its temperature within a reasonable range, avoiding component aging due to overheating.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A processing device for series inductors on an air conditioner outdoor unit control board, comprising a processing platform (1), characterized in that: The processing platform (1) is equipped with a processing mechanism for series inductance of the air conditioner outdoor unit control board. The processing mechanism includes: The mounting components include a first clamping plate (301) slidably connected to the upper end of the processing platform (1), and the two ends of the first clamping plate (301) are provided with limiting brackets (401) connected by a pushing component; The processing component includes ventilation holes (2) evenly opened on the inner surface of the processing platform (1), an air outlet pipe (202) connected by a heat dissipation component is provided inside the ventilation holes (2), a buffer shell (605) connected by a drive component is provided at one end of the processing platform (1), and a welding gun (704) connected by a shock absorption component is provided inside the buffer shell (605).

2. The air conditioner outdoor unit control board series inductor processing device according to claim 1, characterized in that: The processing platform (1) has sliding grooves (3) on both sides. The two ends of the first clamping plate (301) are slidably connected to the sliding grooves (3). One end of the processing platform (1) is fixed with a first electric push rod (302) for pushing the first clamping plate (301). A transmission gear (502) is rotatably connected at the center of the lower end of the processing platform (1). One end of the first clamping plate (301) is fixed with a connecting bracket (5). One end of the connecting bracket (5) is fixed with a toothed rod (501) that meshes with the transmission gear (502).

3. The air conditioner outdoor unit control board series inductor processing device according to claim 1, characterized in that: The jacking assembly includes a second electric push rod (4) fixed to the inner walls of both ends of the first clamping plate (301). The limiting bracket (401) is fixedly connected to the telescopic end of the second electric push rod (4). The limiting bracket (401) has an L-shaped structure. A third electric push rod (402) is fixedly inserted through the vertical direction of the limiting bracket (401). The telescopic end of the third electric push rod (402) is fixed to the second clamping plate (403).

4. The air conditioner outdoor unit control board series inductor processing device according to claim 1, characterized in that: The heat dissipation assembly includes a cavity seat (203) fixed to one side wall of the processing platform (1), a fan (204) for air injection is fixed to one side of the cavity seat (203), a conduit (201) extending into the processing platform (1) is fixed through the cavity seat (203), and an air outlet pipe (202) is evenly distributed on the conduit (201).

5. The air conditioner outdoor unit control board series inductor processing device according to claim 1, characterized in that: The drive assembly includes a support frame (6) fixed at one end of the upper surface of the processing platform (1). A first slide rail bracket (601) is fixed at the top of the support frame (6). A second slide rail bracket (602) is slidably connected to the first slide rail bracket (601) via a lead screw. A slider (603) is slidably connected to the second slide rail bracket (602) via a lead screw. A fourth electric push rod (604) is fixedly fixed through the slider (603) in the vertical direction. The buffer shell (605) is fixedly connected to the telescopic end of the fourth electric push rod (604).

6. The air conditioner outdoor unit control board series inductor processing device according to claim 1, characterized in that: The shock absorption assembly includes a positioning groove (7) on the inner wall of a buffer housing (605). A positioning block (701) is slidably connected to the inner wall of the positioning groove (7). A buffer block (702) is fixed to the inner wall of the positioning block (701). A buffer rod (703) is fixed to the lower end of the buffer block (702). The welding gun (704) is fixedly connected to the lower end of the buffer rod (703). A shock-absorbing spring (705) is fixed to the upper surface of the buffer block (702). The upper end of the shock-absorbing spring (705) is fixedly connected to the buffer housing (605). A damping support rod (706) is provided on the inner ring of the shock-absorbing spring (705). The damping support rod (706) is fixedly connected to the upper end of the buffer block (702).

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