An arc welding device for computer mainframe case accessories

Abstract

The present application relates to electric arc welding device technical field, specifically to a kind of computer mainframe box fittings electric arc welding device, including automatic electric arc welding machine base, wire feeding mechanism being installed in the one side of automatic electric arc welding machine base and electric arc welding torch, by integrating electric arc welding torch with processing assembly in the two ends of rectangular frame, cooperate with the realization of in situ polishing finishing of tungsten electrode welding needle by driving reversing assembly and telescopic component, cylinder is driven by driving rack and transmission gear engagement transmission to drive electric arc welding torch rotation around rotation shaft and switch position, first electric telescopic rod drives sleeve head along connecting pipe telescopic avoidance, second electric telescopic rod drives polishing wheel feeding to complete symmetrical grinding, without stopping machine disassembly welding torch and take out tungsten electrode offline processing, can reduce dismounting positioning error, shorten auxiliary working hours, stability welding arc and weld penetration consistency, improve the operation efficiency of automatic electric arc welding machine and batch processing quality stability, adapt to the continuous production needs of computer mainframe box sheet metal fittings in intelligent manufacturing equipment.

Description

Technical Field

[0001] This invention relates to the field of arc welding equipment technology, specifically to an arc welding device for computer host chassis accessories. Background Technology

[0002] The welding of various sheet metal parts for computer chassis is generally completed using automatic arc welding machines. This type of equipment is a core processing device in the field of intelligent manufacturing equipment for thin-plate welding processes. It mainly consists of a base, a multi-axis robotic arm, an arc welding torch, a wire feeding mechanism, and a control unit. During operation, the control unit presets the welding trajectory and process parameters, driving the robotic arm to move the arc welding torch along the workpiece joint. The high temperature generated by the arc melts the base material and filler wire, while simultaneously supplying shielding gas to isolate the molten pool from oxidation. This process sequentially completes the welding of various parts such as the chassis base plate, reinforcing ribs, and mounting studs. It enables programmed and automated continuous processing and is widely used in the large-scale production of chassis sheet metal parts.

[0003] Existing automated arc welding equipment used for computer chassis components suffers from tip deformation, deflection, and wear on the tungsten electrode tip during continuous welding operations due to arc erosion and spatter adhesion. This leads to arc divergence and arc length fluctuations, directly impacting weld quality and penetration stability. Current equipment lacks in-situ grinding capabilities; after wear occurs, the machine must be stopped, the welding torch chuck disassembled, the tungsten electrode removed for offline grinding and repair, and then re-clamped and recalibrated. This process is cumbersome, time-consuming, and prone to clamping and positioning errors, making it difficult to ensure consistency in batch welding. It fails to meet the requirements of continuous and efficient operation for intelligent manufacturing equipment, thus hindering the production efficiency and finished product quality stability of chassis sheet metal components. Summary of the Invention

[0004] The purpose of this invention is to provide an arc welding device for computer chassis accessories, in order to solve the problems mentioned in the background art of existing automatic arc welding devices for computer chassis accessories, which do not have in-situ grinding function, require offline repair after tungsten electrode wear, are prone to positioning errors during reassembly, are cumbersome and inefficient, are difficult to ensure batch welding consistency, and cannot meet the continuous and efficient operation requirements of intelligent manufacturing equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an arc welding device for computer chassis accessories, comprising an automatic arc welding machine base, a wire feeding mechanism mounted on one side of the automatic arc welding machine base, and an arc welding torch. A robotic arm is mounted on the top of the automatic arc welding machine base. A connecting seat is fixed to the execution end of the robotic arm. A mounting frame is fixed to one side of the connecting seat. A rectangular frame is fixed to the bottom of the mounting frame. The arc welding torch is vertically disposed inside one end of the rectangular frame. A processing component is disposed at the other end of the rectangular frame. A drive reversing component is disposed outside the arc welding torch. A rotating frame is fixed to the side of the rectangular frame near the arc welding torch. A wire guiding mechanism is mounted on one side of the rotating frame. A tungsten inert gas (TIG) needle is vertically clamped at the bottom of the arc welding torch. Several air jet pipes are arranged around the outside of the TIG needle. A telescopic component is disposed at the bottom of the arc welding torch.

[0006] Furthermore, the drive reversing assembly includes a mounting sleeve, two rotating shafts, and a cylinder. The mounting sleeve is fitted and fixed to the outside of the arc welding gun. The two rotating shafts are symmetrically fixed to the outside of both sides of the mounting sleeve. The cylinder is fixedly installed on the outside of one side of the rectangular frame. One end of each rotating shaft is rotatably installed through the outside of one side of the rectangular frame.

[0007] Furthermore, a transmission gear is fixedly fitted onto one end of one of the rotating shafts, and a drive rack is meshed with one side of the transmission gear. One end of the drive rack is fixedly connected to the output end of the cylinder.

[0008] Furthermore, the telescopic assembly includes a connecting pipe, a sleeve head, and a first electric telescopic rod. The connecting pipe is fixedly installed outside the bottom end of the arc welding gun, the sleeve head is slidably installed outside the bottom end of the connecting pipe, and the first electric telescopic rod is vertically fixed outside one side of the connecting pipe. Both the connecting pipe and the sleeve head cover the outside of the tungsten inert welding needle.

[0009] Furthermore, each of the sleeve heads has a positioning block fixed on the outside of each jet pipe, each jet pipe is fixedly connected to the positioning block on the corresponding side, and an annular conduit is fixedly connected between the input ends of several jet pipes. A guide block is fixed on the outside of the connecting pipe near each positioning block.

[0010] Furthermore, each of the guide blocks has a guide rod vertically penetrating and slidably installed inside, and the bottom end of each guide rod is fixedly connected to the top end of the corresponding positioning block. The output end of the first electric telescopic rod is fixedly connected to one side of one of the positioning blocks.

[0011] Furthermore, the processing assembly includes a fixed base, a mounting base, two grinding wheels, and a second electric telescopic rod. The fixed base is fixed to the outside of the rectangular frame, the mounting base is located on the inside of the rectangular frame, the two grinding wheels are symmetrically inclined and located on the outside of the mounting base away from the fixed base, and the second electric telescopic rod is fixedly installed on the outside of the fixed base away from the mounting base.

[0012] Furthermore, the output end of the second electric telescopic rod is fixedly connected to one side of the mounting base. The mounting base is fixedly installed with a drive motor on one side corresponding to each grinding wheel. The output end of the drive motor is fixedly connected to the middle of a grinding wheel on the corresponding side. The top of the mounting base is provided with a liquid injection assembly.

[0013] Furthermore, the liquid injection assembly includes a liquid storage tank, a suction rod, a suction cylinder, and two semi-circular nozzle tubes. The liquid storage tank is fixed to one side of the mounting bracket. The suction rod is horizontally arranged at the top of the mounting base. The suction cylinder is sleeved on the outside of the suction rod. The two semi-circular nozzle tubes are fixedly installed on the outside of one side of the mounting base by a bracket. The output ends of multiple nozzles inside each semi-circular nozzle tube face the outside of a grinding wheel on the corresponding side.

[0014] Furthermore, a connecting frame is fixedly installed at the top of the mounting base, and the top of the connecting frame is fixedly connected to one end of the suction rod. A piston block is fixed at the other end of the suction rod. The piston block is slidably and sealed inside the suction cylinder. A one-way inlet valve pipe and a one-way outlet valve pipe are connected and fixedly connected at the end of the suction cylinder away from the connecting frame. The input end of the one-way inlet valve pipe passes through and is sealed and fixed inside the storage tank. The output end of the one-way outlet valve pipe is connected to a stretching pipe. The output end of the stretching pipe is fixedly connected to one end of a three-way pipe. The input ends of the two semi-circular nozzle pipes are fixedly connected to the other two ends of the three-way pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The automatic arc welding machine of this invention belongs to the field of thin plate welding processing equipment in intelligent manufacturing equipment. By integrating an arc welding gun and processing components at both ends of a rectangular frame, and cooperating with a drive reversing component and a telescopic component, in-situ grinding and trimming of the tungsten electrode welding needle is achieved. The cylinder drives the arc welding gun to rotate around the rotating shaft to switch the work position through the meshing of the drive rack and transmission gear. The first electric telescopic rod drives the sleeve head to extend and retract along the connecting pipe to avoid collisions. The second electric telescopic rod drives the grinding wheel to feed and complete symmetrical grinding. There is no need to stop the machine to disassemble the welding gun and remove the tungsten electrode for offline processing. This can reduce disassembly and positioning errors, shorten auxiliary time, stabilize the consistency of welding arc and weld penetration, improve the operating efficiency and batch processing quality stability of the automatic arc welding machine, and adapt to the continuous production needs of computer host box sheet metal parts in intelligent manufacturing equipment.

[0017] 2. This invention, by equipping the processing component with a liquid injection component, relies on the feed and retraction actions of the mounting base to link the suction rod and piston block to reciprocate within the suction cylinder. Combined with one-way inlet and one-way outlet valves, it achieves automatic suction and discharge of cooling and lubricating liquid. After being diverted through the stretching tube and the three-way pipe, the liquid is sprayed onto the surface of the grinding wheel through a semi-circular nozzle. This removes grinding heat, reducing the risk of tungsten electrode annealing, washes away grinding debris to maintain the cutting sharpness of the grinding wheel, and simultaneously coats the workpiece surface with tungsten powder to prevent contamination. This component requires no additional independent drive, has a compact structure and good synchronization, and can improve the integration and processing precision of automatic arc welding machines, better adapting to the precision and continuous operation requirements of intelligent manufacturing equipment for welding equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the connector and mounting bracket of the present invention;

[0020] Figure 3 This is a side view of the mounting bracket and rectangular frame of the present invention.

[0021] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 5 This is a three-dimensional structural diagram of the mounting base and grinding wheel of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the connecting pipe and sleeve head of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the suction cylinder and one-way liquid inlet valve pipe of the present invention;

[0025] Figure 8 This is a three-dimensional structural diagram of the mounting base and connecting frame of the present invention;

[0026] Figure 9 For the present invention Figure 7 Enlarged structural diagram at point B;

[0027] Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the suction cylinder and piston block of the present invention.

[0028] In the attached diagram, the components represented by each number are as follows: 1. Automatic arc welding machine base; 2. Robotic arm; 3. Wire feeding mechanism; 4. Connecting seat; 5. Mounting bracket; 6. Rectangular frame; 7. Mounting sleeve; 8. Arc welding torch; 9. Connecting pipe; 10. Sleeve head; 11. Tungsten inert gas (TIG) welding needle; 12. Rotating frame; 13. Wire guiding mechanism; 14. Positioning block; 15. Air jet pipe; 16. Annular guide tube; 17. Guide block; 18. Guide rod; 19. First electric extension... 20. Telescopic rod; 21. Rotating shaft; 22. Transmission gear; 23. Drive rack; 24. Cylinder; 25. Fixed base; 26. Mounting base; 27. Drive motor; 28. Grinding wheel; 29. ​​Second electric telescopic rod; 30. Storage tank; 31. Connecting frame; 32. Suction rod; 33. Suction cylinder; 34. Piston block; 35. One-way inlet valve pipe; 36. One-way outlet valve pipe; 37. Tensioning pipe; 38. Semi-circular nozzle pipe; 39. T-connector pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1 - Figure 7 An arc welding device for computer chassis accessories includes an automatic arc welding machine base 1, a wire feeding mechanism 3 installed on one side of the automatic arc welding machine base 1, and an arc welding torch 8. A robotic arm 2 is mounted on the top of the automatic arc welding machine base 1. A connecting seat 4 is fixed to the execution end of the robotic arm 2. A mounting frame 5 is fixed to one side of the connecting seat 4. A rectangular frame 6 is fixed to the bottom of the mounting frame 5. The arc welding torch 8 is vertically arranged inside one end of the rectangular frame 6. A processing component is arranged at the other end of the rectangular frame 6. A drive reversing component is arranged on the outside of the arc welding torch 8. A rotating frame 12 is fixed on the side of the rectangular frame 6 near the arc welding torch 8. A wire guiding mechanism 13 is mounted on one side of the rotating frame 12. A tungsten inert gas (TIG) needle 11 is vertically clamped at the bottom of the arc welding torch 8. Several air jet pipes 15 are arranged around the outside of the TIG needle 11. A telescopic component is arranged at the bottom of the arc welding torch 8.

[0031] The drive reversing assembly includes a mounting sleeve 7, two rotating shafts 20 and a cylinder 23. The mounting sleeve 7 is fitted and fixed to the outside of the arc welding gun 8. The two rotating shafts 20 are symmetrically fixed to the outside of both sides of the mounting sleeve 7. The cylinder 23 is fixedly installed on the outside of one side of the rectangular frame 6. One end of each rotating shaft 20 is rotatably installed through the outside of one side of the rectangular frame 6.

[0032] One end of one of the rotating shafts 20 is fitted with a transmission gear 21, and a drive rack 22 is meshed with one side of the transmission gear 21. One end of the drive rack 22 is fixedly connected to the output end of the cylinder 23.

[0033] The telescopic assembly includes a connecting pipe 9, a sleeve head 10, and a first electric telescopic rod 19. The connecting pipe 9 is fixedly installed on the outside of the bottom end of the arc welding gun 8. The sleeve head 10 is slidably installed on the outside of the bottom end of the connecting pipe 9. The first electric telescopic rod 19 is vertically fixed on the outside of one side of the connecting pipe 9. Both the connecting pipe 9 and the sleeve head 10 cover the outside of the tungsten inert welding needle 11.

[0034] Each sleeve head 10 has a positioning block 14 fixed on the outside of each jet pipe 15. Each jet pipe 15 is fixedly connected to the positioning block 14 on the corresponding side. A ring-shaped conduit 16 is fixedly connected between the input ends of several jet pipes 15. A guide block 17 is fixed on the outside of the connecting pipe 9 near each positioning block 14. When the device is made, an air inlet is set on the ring-shaped conduit 16 and connected to the protective air source through a retractable hose.

[0035] Each guide block 17 has a guide rod 18 vertically running through it and slidingly installed inside. The bottom end of each guide rod 18 is fixedly connected to the top end of the corresponding positioning block 14. The output end of the first electric telescopic rod 19 is fixedly connected to one side of one of the positioning blocks 14.

[0036] The processing assembly includes a fixed base 24, a mounting base 25, two grinding wheels 27 and a second electric telescopic rod 28. The fixed base 24 is fixed to the outside of the rectangular frame 6, the mounting base 25 is located on the inside of the rectangular frame 6, the two grinding wheels 27 are symmetrically inclined and located on the outside of the mounting base 25 away from the fixed base 24, and the second electric telescopic rod 28 is fixedly installed on the outside of the fixed base 24 away from the mounting base 25.

[0037] The output end of the second electric telescopic rod 28 is fixedly connected to one side of the mounting base 25. The mounting base 25 is fixedly mounted with a drive motor 26 on one side of each grinding wheel 27. The output end of the drive motor 26 is fixedly connected to the middle of a grinding wheel 27 on the corresponding side.

[0038] In this embodiment, the automatic arc welding machine belongs to the field of intelligent manufacturing equipment and is a special arc welding equipment for processing sheet metal parts for computer host cases. Its working principle is as follows:

[0039] During welding operations, the chassis components to be processed are clamped and fixed at the work station. The robotic arm 2 on the base 1 of the automatic arc welding machine moves the connecting seat 4, mounting frame 5 and rectangular frame 6 at the end according to the preset welding trajectory, so that the tungsten electrode welding needle 11 at the bottom of the arc welding gun 8 is aligned with the joint position of the workpiece. The wire feeding mechanism 3 feeds the filler wire to the welding area through the wire guiding mechanism 13 on the rotating frame 12. Several air jet pipes 15 deliver shielding gas to the molten pool area. After the welding power source ignites the arc between the tungsten electrode welding needle 11 and the workpiece, the high temperature of the arc melts the base material and the welding wire to form a weld and complete the welding process. During the process, the robotic arm 2 drives the arc welding gun 8 to move continuously along the joint, realizing the automated welding operation of the chassis components.

[0040] After welding has been performed for a period of time, the tip of the tungsten inert welding needle 11 will be deformed and worn due to arc erosion and spatter adhesion. When it needs to be repaired, the first electric telescopic rod 19 is activated. The output end of the first electric telescopic rod 19 drives the positioning block 14 on the corresponding side to move upward. The positioning block 14 drives the guide rod 18 to slide vertically upward along the inside of the guide block 17, which in turn drives the sleeve head 10 to slide upward and retract along the outer wall of the connecting pipe 9, so that the tip of the tungsten inert welding needle 11 is exposed from the inside of the sleeve head 10. This avoids the grinding wheel 27 from contacting and colliding with the sleeve head 10, the air jet pipe 15 and the annular guide tube 16 during the subsequent grinding process, which would cause damage to the surrounding components.

[0041] Then, cylinder 23 is activated. The output end of cylinder 23 pushes the drive rack 22 to move in a straight line. The drive rack 22 meshes with the transmission gear 21, which drives the transmission gear 21 to rotate around the axis of the rotating shaft 20. The rotating shaft 20 rotates synchronously and drives the arc welding gun 8 to rotate around the axis of the rotating shaft 20 through the mounting sleeve 7. This causes the tungsten electrode welding needle 11 at the bottom of the arc welding gun 8 to turn to the processing component side at the other end of the rectangular frame 6 until the tip of the tungsten electrode welding needle 11 is aligned with the center position between the two symmetrically inclined grinding wheels 27.

[0042] During the grinding operation, the second electric telescopic rod 28 is activated, and its output end extends forward to push the mounting base 25 toward the tungsten inert welding needle 11. The two grinding wheels 27 are fed synchronously with the mounting base 25. When the working surfaces of the grinding wheels 27 on both sides are in contact with the outer walls of the tip of the tungsten inert welding needle 11, the second electric telescopic rod 28 maintains the feed pressure. Then, the two drive motors 26 are activated synchronously, driving the grinding wheels 27 on the corresponding sides to rotate at high speed. The tip of the tungsten inert welding needle 11 is symmetrically ground and trimmed from both sides to remove the ablated and deformed parts of the tip and the adhering spatter particles, restoring the regular cone angle and surface finish of the tungsten tip. This overhaul process can be completed directly at the original workstation of the equipment without stopping the machine to disassemble the clamping structure of the arc welding gun 8, or removing the tungsten electrode welding needle 11 for offline processing. This effectively shortens the auxiliary operation time and avoids clamping and positioning errors caused by repeated disassembly and assembly. It helps to stabilize the welding arc shape, improve the consistency of weld penetration, ensure the quality stability of batch welding operations of automatic arc welding machines, and adapt to the continuous production needs of intelligent manufacturing equipment.

[0043] After grinding and finishing, the second electric telescopic rod 28 drives the mounting base 25 to retract, and the two grinding wheels 27 simultaneously disengage from the tip of the tungsten inert gas (TIG) welding needle 11. Subsequently, the cylinder 23 reverses its action, pulling the drive rack 22 to move in the opposite direction. Through the meshing transmission gear 21 and the rotating shaft 20, the arc welding torch 8 rotates in the opposite direction around the axis of the rotating shaft 20, resetting to the initial welding position. Then, the first electric telescopic rod 19 extends downward, driving the positioning block 14, guide rod 18, and sleeve head 10 to move downward and reset. The sleeve head 10 is then repositioned over the outside of the TIG welding needle 11, and the air jet pipe 15 resets to the working position simultaneously with the sleeve head 10. The device can then continue welding operations. The entire position switching and finishing process can be fully automated without manual intervention in disassembly and assembly, effectively improving the operating efficiency of the automatic arc welding machine, reducing the time ratio of auxiliary processes, and ensuring the positional accuracy of the TIG welding needle 11 after reset, reducing the impact on the accuracy of subsequent welding trajectories. This is suitable for the large-scale continuous processing needs of chassis sheet metal parts.

[0044] When using this device, a displacement sensor can be added to the side of the mounting base 25 near the grinding wheel 27, and a position sensor can be added to the rectangular frame 6 at the rotation position corresponding to the arc welding gun 8. The displacement sensor is used to detect the feed distance of the grinding wheel 27 in real time, accurately control the grinding amount and grinding pressure, and avoid excessive grinding that causes the tungsten electrode to wear out too quickly. The position sensor is used to confirm the rotation angle and position of the arc welding gun 8, ensure the switching accuracy between the welding position and the grinding position, improve the reliability of the automated operation of the automatic arc welding machine, and better adapt to the continuous and efficient production needs of intelligent manufacturing equipment.

[0045] Example 2: Please refer to Figure 7 - Figure 10This embodiment further describes Example 1, and the top of the fixing base 24 is provided with a liquid injection component.

[0046] The liquid injection assembly includes a liquid storage tank 29, a suction rod 31, a suction cylinder 32, and two semi-circular nozzle tubes 37. The liquid storage tank 29 is fixed to one side of the mounting bracket 5. The suction rod 31 is horizontally arranged at the top of the mounting base 25. The suction cylinder 32 is sleeved on the outside of the suction rod 31. The two semi-circular nozzle tubes 37 are fixedly installed on the outside of one side of the mounting base 25 by brackets. The output ends of multiple nozzles inside each semi-circular nozzle tube 37 face the outside of a grinding wheel 27 on the corresponding side.

[0047] A connecting bracket 30 is fixedly installed at the top of the mounting base 25. The top of the connecting bracket 30 is fixedly connected to one end of the suction rod 31. A piston block 33 is fixedly installed at the other end of the suction rod 31. The piston block 33 is sealed and slidably installed inside the suction cylinder 32. A one-way liquid inlet valve pipe 34 and a one-way liquid outlet valve pipe 35 are connected and fixedly connected at the end of the suction cylinder 32 away from the connecting bracket 30. The input end of the one-way liquid inlet valve pipe 34 passes through and is sealed and fixed inside the storage tank 29. The output end of the one-way liquid outlet valve pipe 35 is connected to a stretching pipe 36. The output end of the stretching pipe 36 is fixedly connected to one end of the three-way pipe 38. The input ends of the two semi-circular nozzle pipes 37 are fixedly connected to the other two ends of the three-way pipe 38.

[0048] In this embodiment, the liquid injection component and the grinding feed action are mechanically linked, providing cooling and chip removal assistance for the in-situ grinding process of the tungsten electrode in the automatic arc welding machine. It is a supporting structure for the precision improvement of arc welding equipment in intelligent manufacturing equipment, and its working principle is as follows:

[0049] When the second electric telescopic rod 28 pushes the mounting base 25 to feed towards the tungsten electrode welding needle 11 and the grinding wheel 27 approaches the tip of the tungsten electrode to perform grinding operations, the connecting bracket 30 fixed at the top of the mounting base 25 moves forward synchronously with the mounting base 25, pushing the suction rod 31 into the suction cylinder 32. The piston block 33 at the end of the suction rod 31 slides along the inner wall of the suction cylinder 32 towards the valve, squeezing the cooling and lubricating liquid stored in the cylinder. The pressurized cooling and lubricating liquid flows out through the one-way drain valve pipe 35, enters the stretching pipe 36, and is then transported through the stretching pipe 36 to the three-way pipe 38. The three-way pipe 38 evenly distributes the liquid to the two semi-circular nozzle pipes 37, and finally through the semi-circular nozzle pipes... Multiple nozzles on 37 spray evenly onto the surface of the corresponding grinding wheel 27, working synchronously with the grinding process. On one hand, they remove the heat generated by grinding friction, reducing the temperature of the contact area between the grinding wheel 27 and the tungsten electrode 11, reducing the annealing and softening of the metallographic structure of the tungsten electrode tip caused by high temperature, and helping to maintain the tip hardness and geometric accuracy of the tungsten electrode 11. On the other hand, they wash away the tungsten powder and grinding debris embedded in the working surface of the grinding wheel 27, maintaining the cutting sharpness of the abrasive grains and improving the consistency of the cone angle during continuous grinding. At the same time, the moist liquid encapsulates the ultrafine tungsten powder particles generated by grinding, preventing the tungsten powder from drifting and settling onto the surface of the chassis components below, thus helping to keep the workpiece plate surface clean.

[0050] Meanwhile, a liquid recovery mechanism with an existing structure can be installed at the corresponding position below the two grinding wheels 27. The semi-enclosed flow guide structure can collect the excess liquid and the mixture containing grinding debris thrown out by the rotating grinding wheels 27. After being treated by a simple filtration unit, it can be returned to the storage tank 29 for recycling. This can reduce the liquid splashing and dripping onto the lower chassis components and causing panel contamination, reduce the consumption of cooling and lubricating liquid, reduce material waste, improve the economy and cleanliness of the auxiliary process of the automatic arc welding machine, and better adapt to the high-efficiency and clean production requirements of intelligent manufacturing equipment.

[0051] When the grinding operation is completed, the second electric telescopic rod 28 drives the mounting base 25 to retract, and the grinding wheel 27 disengages from the tungsten inert welding needle 11, the connecting frame 30 moves synchronously in the opposite direction with the mounting base 25, pulling the suction rod 31 to extend outward to the outside of the suction cylinder 32. The piston block 33 slides along the inner wall of the suction cylinder 32 to the side away from the valve, so that a negative pressure is formed inside the suction cylinder 32. The cooling and lubricating liquid in the storage tank 29 is sucked into the suction cylinder 32 through the one-way liquid inlet valve pipe 34, completing the liquid inlet energy storage process for the next grinding operation.

[0052] This liquid injection component achieves automatic liquid spraying and automatic liquid absorption and energy storage by relying on the linear motion of grinding feed and retraction. It does not require additional independent drive components, has a compact structure and good motion synchronization, and can be directly integrated into the end actuator of the automatic arc welding machine without occupying additional working space. It helps to improve the integration level and operational reliability of the automatic arc welding machine, and better adapts to the precision and continuous operation requirements of intelligent manufacturing equipment for welding equipment.

[0053] 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 a process, method, article, or apparatus.

[0054] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An arc welding device for computer chassis accessories, comprising an automatic arc welding machine base (1), a wire feeding mechanism (3) mounted on one side of the automatic arc welding machine base (1), and an arc welding torch (8), characterized in that: The automatic arc welding machine base (1) is equipped with a robotic arm (2) at its top end. The robotic arm (2) is fixed with a connecting seat (4) at its execution end. A mounting frame (5) is fixed on one side of the connecting seat (4). A rectangular frame (6) is fixed at the bottom end of the mounting frame (5). The arc welding gun (8) is vertically arranged inside one end of the rectangular frame (6). A processing component is provided at the other end of the rectangular frame (6). A drive reversing component is provided on the outside of the arc welding gun (8). A rotating frame (12) is fixed on the side of the rectangular frame (6) near the arc welding gun (8). A wire guide mechanism (13) is assembled on one side of the rotating frame (12). A tungsten electrode welding needle (11) is vertically clamped at the bottom end of the arc welding gun (8). Several air jet pipes (15) are arranged around the outside of the tungsten electrode welding needle (11). A telescopic component is provided at the bottom end of the arc welding gun (8).

2. The arc welding device for computer host chassis accessories according to claim 1, characterized in that: The drive reversing assembly includes a mounting sleeve (7), two rotating shafts (20) and a cylinder (23). The mounting sleeve (7) is fitted and fixed on the outside of the arc welding gun (8). The two rotating shafts (20) are symmetrically fixed on the outside of the two sides of the mounting sleeve (7). The cylinder (23) is fixedly installed on the outside of one side of the rectangular frame (6). One end of each rotating shaft (20) is rotatably installed through the outside of one side of the rectangular frame (6).

3. The arc welding device for computer host chassis accessories according to claim 2, characterized in that: One end of one of the rotating shafts (20) is fitted with a transmission gear (21), and a drive rack (22) is meshed with one side of the transmission gear (21). One end of the drive rack (22) is fixedly connected to the output end of the cylinder (23).

4. The arc welding device for computer host chassis accessories according to claim 1, characterized in that: The telescopic assembly includes a connecting pipe (9), a sleeve head (10), and a first electric telescopic rod (19). The connecting pipe (9) is fixedly installed outside the bottom end of the arc welding gun (8). The sleeve head (10) is slidably installed outside the bottom end of the connecting pipe (9). The first electric telescopic rod (19) is vertically fixed outside one side of the connecting pipe (9). Both the connecting pipe (9) and the sleeve head (10) are covered outside the tungsten inert welding needle (11).

5. The arc welding device for computer host chassis accessories according to claim 4, characterized in that: The sleeve head (10) is fixed with a positioning block (14) on the outside of each jet pipe (15). Each jet pipe (15) is fixedly connected to the positioning block (14) on the corresponding side. A ring conduit (16) is fixedly connected between the input ends of several jet pipes (15). A guide block (17) is fixed on the outside of the connecting pipe (9) near each positioning block (14).

6. The arc welding device for computer host chassis accessories according to claim 5, characterized in that: Each of the guide blocks (17) has a guide rod (18) that is vertically inserted and slidably installed inside. The bottom end of each guide rod (18) is fixedly connected to the top end of the corresponding positioning block (14). The output end of the first electric telescopic rod (19) is fixedly connected to one side of one of the positioning blocks (14).

7. The arc welding device for computer host chassis accessories according to claim 1, characterized in that: The processing assembly includes a fixed base (24), a mounting base (25), two grinding wheels (27) and a second electric telescopic rod (28). The fixed base (24) is fixed to the outside of the rectangular frame (6), the mounting base (25) is located on the inside of the rectangular frame (6), the two grinding wheels (27) are symmetrically inclined and located on the outside of the mounting base (25) away from the fixed base (24), and the second electric telescopic rod (28) is fixedly installed on the outside of the fixed base (24) away from the mounting base (25).

8. The arc welding device for computer host chassis accessories according to claim 7, characterized in that: The output end of the second electric telescopic rod (28) is fixedly connected to one side of the mounting base (25). The mounting base (25) is fixedly installed with a drive motor (26) on one side corresponding to each grinding wheel (27). The output end of the drive motor (26) is fixedly connected to the middle of a grinding wheel (27) on the corresponding side. The top of the fixed base (24) is provided with a liquid injection assembly.

9. The arc welding device for computer host chassis accessories according to claim 8, characterized in that: The liquid injection assembly includes a liquid storage tank (29), a suction rod (31), a suction cylinder (32), and two semi-circular nozzle tubes (37). The liquid storage tank (29) is fixed on one side of the mounting bracket (5). The suction rod (31) is horizontally arranged at the top of the mounting base (25). The suction cylinder (32) is sleeved on the outside of the suction rod (31). The two semi-circular nozzle tubes (37) are fixedly installed on the outside of one side of the mounting base (25) by the bracket. The output ends of multiple nozzles inside each semi-circular nozzle tube (37) face the outside of a grinding wheel (27) on the corresponding side.

10. The arc welding device for computer host chassis accessories according to claim 9, characterized in that: A connecting frame (30) is fixedly installed at the top of the mounting base (25). The top of the connecting frame (30) is fixedly connected to one end of the suction rod (31). A piston block (33) is fixed at the other end of the suction rod (31). The piston block (33) is sealed and slidably installed inside the suction cylinder (32). A one-way liquid inlet valve pipe (34) and a one-way liquid outlet valve pipe (35) are connected and fixed at the end of the suction cylinder (32) away from the connecting frame (30). The input end of the one-way liquid inlet valve pipe (34) passes through and is sealed and fixed inside the storage tank (29). The output end of the one-way liquid outlet valve pipe (35) is connected to a stretching pipe (36). The output end of the stretching pipe (36) is fixedly connected to one end of the three-way pipe (38). The input ends of the two semi-circular nozzle pipes (37) are fixedly connected to the other two ends of the three-way pipe (38).

Images