Plasma surfacing device for machining workpieces

Abstract

The application discloses a kind of plasma surfacing devices for workpiece processing, it is related to plasma surfacing technical field, including base, the top of the base is provided with tooling assembly, the output end of the tooling assembly is clamped with workpiece, the right side of the top of the base is fixedly connected with crossbeam, the top of the crossbeam is fixedly connected with horizontal guide rail.The application is used for clamping workpiece by setting tooling assembly, and integrated horizontal and longitudinal guide rail to drive connection welding assembly, the structure allows workpiece to be fixed and welding head multidirectional movement, realizes flexible multi-position welding, at the same time, welding wire roll is fixed on the front of longitudinal guide rail by connecting structure, welding wire is directly extended to the inside of welding assembly, lays the foundation for the stable conveying of welding wire, avoids the deviation of wire feeding path caused by loose structure in traditional device, overall, the design simplifies device layout, facilitates workpiece loading and unloading and welding process control, improves the convenience of operation and equipment reliability.

Description

Technical Field

[0001] This invention relates to the field of plasma cladding technology, specifically to a plasma cladding apparatus for workpiece processing. Background Technology

[0002] Plasma cladding is an advanced surface engineering technology that uses a high-energy-density plasma arc as a heat source to melt and metallurgically bond filler metal to the surface of a substrate, forming a cladding layer with specific properties. It combines the characteristics of welding metallurgy and surface modification and is mainly used for surface strengthening, repair and dimensional restoration of parts.

[0003] For example, patent application number 201911362827.6 published on the China Patent Network, entitled "A Plasma Welding Device for Welding," includes a curved surface welding device, a dual-selection cleaning device, and a high- and flat dual-purpose movement device; the top rear of the support column is bolted to a double-groove bidirectional clamp; the bottom right side of the curved surface welding device is connected to the dual-selection cleaning device. This invention addresses the problem that existing plasma welding devices can only be used for flat surface welding and are difficult to perform curved surface welding, thus often requiring the use of less efficient welding methods. This invention achieves the advantages of enabling curved surface welding, targeted cleaning of weldments, stable operation at heights, and automatic movement without the need for manual pushing or pulling to prevent falls.

[0004] However, the installation method of the welding wire inside the existing welding equipment is relatively cumbersome, mainly relying on the threaded assembly for fixation. Each time the welding wire is used up, the wire feeding part needs to be completely disassembled. This process is very time-consuming and laborious, which directly reduces the production efficiency of the equipment and the effective working time of the operators. Moreover, frequent thread disassembly and reassembly can easily lead to thread stripping and damage, increasing maintenance costs. The disassembly and reassembly process may be very inconvenient to operate inside the equipment with limited space, especially for heavy equipment or when the operating position is not good.

[0005] Secondly, the wire feeding component can only unwind, lacking an effective vertical guidance and stabilizing mechanism. When the welding wire is detached from the winding state, due to its flexibility, it will swing, droop, or entangle under the action of gravity and inertia. The swinging welding wire cannot enter the subsequent wire feeding wheel or guide tube smoothly and in a straight line, resulting in uneven wire feeding speed, sometimes fast and sometimes slow, or even momentary jamming, leading to uneven deposition, unstable arc, increased spatter, and defects such as porosity and undercut.

[0006] Therefore, it is necessary to redesign and modify the plasma welding equipment used for workpiece processing. Summary of the Invention

[0007] To address the problems mentioned in the background art, the present invention aims to provide a plasma welding apparatus for workpiece processing, which has the advantages of facilitating wire replacement and improving wire feeding stability.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a plasma cladding apparatus for workpiece processing, comprising a base;

[0009] The top of the machine base is provided with a tooling assembly, the output end of which is clamped to a workpiece. A crossbeam is fixedly connected to the right side of the top of the machine base, and a transverse guide rail is fixedly connected to the top of the crossbeam. A longitudinal guide rail is driven to the surface of the transverse guide rail, and a welding assembly is driven to the surface of the longitudinal guide rail. A welding wire roll is provided on the front side of the longitudinal guide rail, and the welding wire wound on the surface of the welding wire roll extends into the interior of the welding assembly. A connecting structure is provided on the surface of the longitudinal guide rail for connecting and fixing the welding wire roll.

[0010] In a preferred embodiment of the present invention, the connecting structure includes a bracket fixedly connected to the front of the longitudinal guide rail. The bracket is located at the top of the welding assembly. The connecting shaft of the welding wire coil overlaps the top of the bracket and is movably connected to the bracket. The left and right sides of the longitudinal guide rail are movably connected to a swing arm via a pin. The front end of the swing arm extends to the outside of the bracket and is located at the top of the connecting shaft of the welding wire coil. The swing arm presses and fixes the welding wire coil inside the bracket. A transmission structure is provided on the back of the longitudinal guide rail, and the transmission structure can control the swing angle of the swing arm.

[0011] In a preferred embodiment of the present invention, the transmission structure includes a connecting frame fixedly connected to the back of the longitudinal guide rail. A screw is movably connected to the inside of the connecting frame via a bearing. A threaded sleeve is threaded onto the surface of the screw. The threaded sleeve is located inside the swing arm. Sliding rods are fixedly connected to both sides of the threaded sleeve and are slidably connected to the swing arm. The top end of the screw passes through the connecting frame and extends to the top of the connecting frame. A rotating wheel located at the top of the connecting frame is fixedly connected to the top end of the screw. When the screw rotates, it can use the thread to push the threaded sleeve to move vertically and use the sliding rods to push the swing arm to swing. An unwinding structure is provided at the front end of the swing arm, which can control the release of the welding wire coil.

[0012] In a preferred embodiment of the present invention, the unwinding structure includes a roller movably connected to the front end of the swing arm via a pin. The roller is made of rubber, and its outer surface contacts the surface of the wire coil connecting shaft. The outer end of the roller extends through to the outside of the swing arm and is fixedly connected to a transmission wheel. Both sides of the bracket are fixedly connected to a bearing plate. The outer side of the bearing plate is movably connected to a driven wheel located at the bottom of the transmission wheel via a bearing. The driven wheel meshes with the transmission wheel. The outer side of the bearing plate is movably connected to a linkage wheel located at the bottom of the driven wheel via a bearing. The linkage wheel meshes with the driven wheel. A linkage structure is provided on the top of the machine base. The linkage structure can control the two linkage wheels to rotate synchronously while ensuring that the linkage wheels can move horizontally following the longitudinal guide rail.

[0013] As a preferred embodiment of the present invention, the linkage structure includes columns fixedly connected to both sides of the top of the base, a transmission rod movably connected to the inner side of the column via a bearing, a linkage wheel sleeved on the surface of the transmission rod and keyed to the transmission rod, the linkage wheel being able to slide on the surface of the transmission rod and rotate using the torque of the transmission rod.

[0014] As a preferred embodiment of the present invention, the tooling assembly includes a support frame fixedly connected to the top of the machine base. A drive motor is fixedly connected to one side of the support frame. The output end of the drive motor extends through to the other side of the support frame and is fixedly connected to a chuck. The workpiece is clamped on the surface of the chuck, and the drive motor can use the chuck to carry the workpiece to rotate. A drive component is provided at the output end of the drive motor, and the drive component can control the rotation of the drive rod when the drive motor is running.

[0015] As a preferred embodiment of the present invention, the driving component includes pulleys that are fixedly connected to the surfaces of the transmission motor and the transmission rod, respectively, and the surface of the pulleys is fitted with a belt.

[0016] In a preferred embodiment of the present invention, two mutually symmetrical support plates are provided on the inner side of the bearing plate, and a first guide rod and a second guide rod are respectively provided on the inner side of the bearing plate. The first guide rod is located at the top of the second guide rod. The support plates are respectively sleeved on the surfaces of the first guide rod and the second guide rod and slidably connected to them. A guide wheel is movably connected to the inner side of the support plate. The guide wheel is located on both sides of the welding wire and contacts the surface of the welding wire.

[0017] In a preferred embodiment of the present invention, the second guide rod is fixedly connected to the bearing plate, the first guide rod is movably connected to the bearing plate via a bearing, and a first helical gear sleeved on the surface of the first guide rod is movably connected to the side of the support plate near the first guide rod via a bearing. The first helical gear is keyed to the first guide rod. A second helical gear is fixedly connected to the side of the guide wheel near the support plate, passing through the support plate. The second helical gear meshes with the first helical gear.

[0018] As a preferred embodiment of the present invention, both ends of the first guide rod are fixedly connected to a first gear, and the inner end of the driven wheel extends through to the inner side of the bearing plate and is fixedly connected to a second gear. The first gear and the second gear mesh with each other, and when the driven wheel is pushed to rotate by the linkage wheel, the torque can be used to control the second gear to rotate synchronously.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. This invention uses tooling components to clamp the workpiece and integrates transverse and longitudinal guide rails for transmission connection of the welding assembly. This structure allows for workpiece fixation and multi-directional movement of the welding head, enabling flexible multi-position welding. At the same time, the welding wire coil is fixed to the front of the longitudinal guide rail through the connecting structure, and the welding wire extends directly into the welding assembly, laying the foundation for stable wire feeding and avoiding wire feeding path deviation caused by loose structure in traditional devices. Overall, this design simplifies the device layout, facilitates workpiece loading and unloading and welding process control, and improves the convenience of operation and equipment reliability.

[0021] 2. This invention uses a bracket and swing arm mechanism to fix the welding wire roll, replacing the traditional threaded fixing, which significantly simplifies the installation and disassembly of the welding wire roll: operators can quickly lock or loosen the welding wire roll with the swing arm without tools, avoiding the time waste, thread stripping or damage caused by frequent thread disassembly, reducing maintenance costs, and is especially suitable for heavy equipment with limited space, thus improving production efficiency.

[0022] 3. This invention uses a screw, a screw sleeve, a slide bar, and a rotating wheel to control the swing angle of the swing arm. The mechanical adjustment method provides precise clamping force control, ensuring that the welding wire coil is firmly fixed and not easily loosened. At the same time, it is easy to operate, requiring no external tools or complicated steps, reducing the workload of operators. Moreover, it avoids the wear problem caused by frequent adjustments of traditional threaded components, improving the durability and reliability of the device, and is especially suitable for high-intensity production environments.

[0023] 4. This invention uses rollers, transmission wheels, driven wheels and linkage wheels to control the release of the welding wire coil, and can provide an active damping effect to prevent the welding wire from becoming excessively loose, swinging or tangled due to gravity or inertia, ensuring that the welding wire is released smoothly and at a uniform speed, avoiding arc instability, increased spatter or welding defects caused by uneven wire feeding speed, while reducing welding wire waste.

[0024] 5. The present invention uses a linkage wheel connected to the surface of the transmission rod by a key, which can both rotate and slide horizontally. This allows the linkage wheel to maintain rotational power as the longitudinal guide rail moves, ensuring continuous operation of the unwinding mechanism during height changes. Regardless of how the welding position is adjusted, the linkage structure ensures stable damping release function.

[0025] 6. This invention uses a support frame, a transmission motor, a chuck, and a drive component to drive the workpiece rotation. The drive component is connected to a linkage structure, which realizes synchronous control of workpiece rotation and welding wire release. This ensures that the welding wire feed speed matches the workpiece rotation speed, avoiding uneven deposition or welding defects caused by asynchrony in traditional devices. At the same time, the modular design simplifies workpiece clamping and improves processing accuracy and efficiency.

[0026] 7. This invention uses pulleys and belts to connect the drive motor and the drive rod, transmitting the power of the drive motor to the drive rod of the linkage structure. This enables effective utilization of power, and the power transmission is simple, reliable, and low-cost. It is also easy to maintain, avoids the complexity of electronic control systems, and ensures stable torque transmission during long-term operation.

[0027] 8. The present invention uses a support plate to slide and connect a first guide rod and a second guide rod to a guide wheel. The guide wheel is set on both sides of the welding wire and contacts the surface of the welding wire, which can provide active guidance in the vertical direction. Moreover, the support plate can slide and adjust the spacing. The guide wheel clamps the welding wire and restricts its degree of freedom, preventing the welding wire from swinging, sagging or tangling under the action of gravity.

[0028] 9. This invention converts the rotation of the first guide rod into the rotation of the guide wheel by meshing the first helical gear and the second helical gear. The first helical gear is keyed to the first guide rod, and the second helical gear is fixed to the guide wheel. The guide wheel rotates while clamping the welding wire, providing auxiliary traction force and reducing the frictional resistance between the welding wire and the guide wheel. This helps the welding wire enter the welding assembly more smoothly and at a uniform speed, which not only enhances the stability of wire feeding but also extends the life of the guide wheel, especially addressing the sticking problem that easily occurs with flexible welding wire.

[0029] 10. The present invention transmits the rotational torque of the driven wheel to the first guide rod through the meshing of the first gear and the second gear, which can ensure that the rotation of the guide wheel is synchronized with the damping function of the unwinding mechanism. During unwinding, the driven wheel drives the second gear to control the rotation of the first guide rod, thereby driving the guide wheel mechanism to achieve coordinated and unified release, guidance and traction of welding wire. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0032] Figure 3 This is a rear view schematic diagram of the transmission structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the unwinding structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the tooling assembly structure of the present invention;

[0036] Figure 7 This is a top view of a partial structure of the present invention;

[0037] Figure 8 This is a top view of the guide wheel structure of the present invention;

[0038] Figure 9 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0039] Figure 10 For the present invention Figure 7 Enlarged structural diagram at point B.

[0040] In the diagram: 1. Machine base; 2. Tooling assembly; 3. Workpiece; 4. Crossbeam; 5. Transverse guide rail; 6. Longitudinal guide rail; 7. Welding assembly; 8. Welding wire coil; 9. Connecting structure; 10. Bracket; 11. Swing rod; 12. Transmission structure; 13. Connecting frame; 14. Screw; 15. Screw sleeve; 16. Slide rod; 17. Rotary wheel; 18. Unwinding structure; 19. Roller; 20. Transmission wheel; 21. Bearing plate; 22. Driven wheel; 23. Linkage wheel; 2 4. Linkage structure; 25. Column; 26. Transmission rod; 27. Bearing frame; 28. Transmission motor; 29. ​​Chuck; 30. Drive component; 31. Pulley; 32. Belt; 33. Support plate; 34. First guide rod; 35. Second guide rod; 36. Guide wheel; 37. First helical gear; 38. Second helical gear; 39. First gear; 40. Second gear; 41. Connecting block; 42. Shift fork; 43. Push rod; 44. Steering helical gear. Detailed Implementation

[0041] 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.

[0042] like Figures 1 to 10 As shown, the present invention provides a plasma cladding apparatus for workpiece processing, comprising a base 1;

[0043] The top of the machine base 1 is provided with a tooling assembly 2, and the output end of the tooling assembly 2 is clamped with a workpiece 3. A crossbeam 4 is fixedly connected to the right side of the top of the machine base 1. A transverse guide rail 5 is fixedly connected to the top of the crossbeam 4. A longitudinal guide rail 6 is connected to the surface of the transverse guide rail 5. A welding assembly 7 is connected to the surface of the longitudinal guide rail 6. A welding wire coil 8 is provided on the front side of the longitudinal guide rail 6. The welding wire wound on the surface of the welding wire coil 8 extends into the interior of the welding assembly 7. A connecting structure 9 is provided on the surface of the longitudinal guide rail 6. The connecting structure 9 is used to connect and fix the welding wire coil 8.

[0044] refer to Figure 3The connecting structure 9 includes a bracket 10 fixedly connected to the front of the longitudinal guide rail 6. The bracket 10 is located on the top of the welding assembly 7. The connecting shaft of the welding wire coil 8 overlaps the top of the bracket 10 and is movably connected to the bracket 10. The left and right sides of the longitudinal guide rail 6 are movably connected to the swing rod 11 by the pin. The front end of the swing rod 11 extends to the outside of the bracket 10 and is located on the top of the connecting shaft of the welding wire coil 8. The swing rod 11 presses and fixes the welding wire coil 8 inside the bracket 10. A transmission structure 12 is provided on the back of the longitudinal guide rail 6. The transmission structure 12 can control the swing angle of the swing rod 11.

[0045] As a technical optimization of the present invention, the welding wire coil 8 is fixed by means of a bracket 10 and a swing rod 11, which replaces the traditional thread fixing and significantly simplifies the installation and disassembly of the welding wire coil 8. Operators can quickly lock or loosen the welding wire coil 8 by means of the swing rod 11 without tools, avoiding the time waste, thread stripping or damage caused by frequent disassembly of the thread, reducing maintenance costs, and is particularly suitable for heavy equipment with limited space, thereby improving production efficiency.

[0046] refer to Figure 3 The transmission structure 12 includes a connecting frame 13 fixedly connected to the back of the longitudinal guide rail 6. A screw 14 is movably connected inside the connecting frame 13 via a bearing. A threaded sleeve 15 is threadedly connected to the surface of the screw 14. The threaded sleeve 15 is located inside the swing arm 11. Slide rods 16 located inside the swing arm 11 are fixedly connected to both sides of the threaded sleeve 15. The slide rods 16 are slidably connected to the swing arm 11. The top end of the screw 14 passes through the connecting frame 13 and extends to the top of the connecting frame 13. A rotating wheel 17 located at the top of the connecting frame 13 is fixedly connected to the top end of the screw 14. When the screw 14 rotates, it can use the thread to push the threaded sleeve 15 to move vertically and use the slide rod 16 to push the swing arm 11 to swing. An unwinding structure 18 is provided at the front end of the swing arm 11. The unwinding structure 18 can control the release of the welding wire coil 8.

[0047] As a technical optimization of the present invention, by setting screw 14, screw sleeve 15, slide bar 16 and rotating wheel 17, the swing angle of the swing arm 11 is controlled. The mechanical adjustment method provides precise clamping force control, ensuring that the welding wire coil 8 is firmly fixed and not easy to loosen. At the same time, the operation is simple, without the need for external tools or complicated steps, reducing the workload of operators. Moreover, it avoids the wear problem caused by frequent adjustment of traditional threaded components, improves the durability and reliability of the device, and is especially suitable for high-intensity production environments.

[0048] refer to Figure 5The unwinding structure 18 includes a roller 19 movably connected to the front end of the swing arm 11 via a pin. The roller 19 is made of rubber. The outer surface of the roller 19 contacts the surface of the connecting shaft of the welding wire coil 8. The outer end of the roller 19 extends through to the outside of the swing arm 11 and is fixedly connected to a transmission wheel 20. Both sides of the bracket 10 are fixedly connected to a bearing plate 21. The outer side of the bearing plate 21 is movably connected to a driven wheel 22 located at the bottom of the transmission wheel 20 via a bearing. The driven wheel 22 meshes with the transmission wheel 20. The outer side of the bearing plate 21 is movably connected to a linkage wheel 23 located at the bottom of the driven wheel 22 via a bearing. The linkage wheel 23 meshes with the driven wheel 22. The top of the base 1 is provided with a linkage structure 24. The linkage structure 24 can control the two linkage wheels 23 to rotate synchronously while ensuring that the linkage wheels 23 can move horizontally with the longitudinal guide rail 6.

[0049] As a technical optimization of the present invention, rollers 19, transmission wheels 20, driven wheels 22 and linkage wheels 23 are set to control the release of the welding wire coil 8, and can provide an active damping effect to prevent the welding wire from loosening, swinging or winding excessively due to gravity or inertia, ensuring that the welding wire is released smoothly and at a uniform speed, avoiding arc instability, increased spatter or welding defects caused by uneven wire feeding speed, and reducing welding wire waste.

[0050] refer to Figure 6 The linkage structure 24 includes columns 25 fixedly connected to both sides of the top of the base 1. A transmission rod 26 is movably connected to the inner side of the column 25 through a bearing. A linkage wheel 23 is sleeved on the surface of the transmission rod 26 and is keyed to the transmission rod 26. The linkage wheel 23 can slide on the surface of the transmission rod 26 and can rotate using the torque of the transmission rod 26.

[0051] As a technical optimization of the present invention, the linkage wheel 23 is connected to the surface of the transmission rod 26 by a key, which can both rotate and slide horizontally. This allows the linkage wheel 23 to maintain rotational power when the longitudinal guide rail 6 moves, ensuring that the unwinding mechanism can operate continuously in height changes. Regardless of how the welding position is adjusted, the linkage structure 24 ensures that the damping release function is stable.

[0052] refer to Figure 6 The tooling assembly 2 includes a support frame 27 fixedly connected to the top of the machine base 1. A drive motor 28 is fixedly connected to one side of the support frame 27. The output end of the drive motor 28 extends through to the other side of the support frame 27 and is fixedly connected to a chuck 29. The workpiece 3 is clamped on the surface of the chuck 29 and the drive motor 28 can use the chuck 29 to carry the workpiece 3 to rotate. A drive component 30 is provided at the output end of the drive motor 28. The drive component 30 can control the rotation of the transmission rod 26 when the drive motor 28 is running.

[0053] As a technical optimization of the present invention, by setting up a support frame 27, a transmission motor 28, a chuck 29 and a drive component 30 to drive the workpiece 3 to rotate, and by connecting the drive component 30 to the linkage structure 24, synchronous control of the rotation of the workpiece 3 and the release of the welding wire is realized, ensuring that the welding wire feed speed matches the rotation speed of the workpiece 3, and avoiding uneven deposition or welding defects caused by asynchrony in traditional devices; at the same time, the modular design simplifies the clamping of the workpiece 3 and improves the processing accuracy and efficiency.

[0054] refer to Figure 6 The drive component 30 includes pulleys 31 that are fixedly connected to the surfaces of the drive motor 28 and the drive rod 26, respectively, and belts 32 are fitted onto the surfaces of the pulleys 31.

[0055] As a technical optimization of the present invention, by using pulley 31 and belt 32 to connect drive motor 28 and drive rod 26, the power of drive motor 28 is transmitted to drive rod 26 of linkage structure 24, which can effectively utilize the power, and the power transmission is simple, reliable and low cost; maintenance is convenient, avoids the complexity of electronic control system, and ensures that the device can stably transmit torque during long-term operation.

[0056] refer to Figure 8 The inner side of the bearing plate 21 is provided with two symmetrical support plates 33. The inner side of the bearing plate 21 is provided with a first guide rod 34 and a second guide rod 35 respectively. The first guide rod 34 is located on top of the second guide rod 35. The support plates 33 are respectively sleeved on the surface of the first guide rod 34 and the second guide rod 35 and are slidably connected to them. The inner side of the support plate 33 is movably connected with a guide wheel 36. The guide wheel 36 is located on both sides of the welding wire and is in contact with the surface of the welding wire.

[0057] As a technical optimization of the present invention, the guide wheel 36 is slidably connected to the support plate 33 by the first guide rod 34 and the second guide rod 35. The guide wheel 36 is arranged on both sides of the welding wire and contacts the surface of the welding wire, which can provide active guidance in the vertical direction. Moreover, the support plate 33 can slide to adjust the spacing. The guide wheel 36 clamps the welding wire and restricts its degree of freedom, preventing the welding wire from swinging, drooping or tangling under the action of gravity.

[0058] refer to Figure 8 The second guide rod 35 is fixedly connected to the bearing plate 21, and the first guide rod 34 is movably connected to the bearing plate 21 through a bearing. The support plate 33 is movably connected to the side of the first guide rod 34 through a bearing, and the first helical gear 37 is sleeved on the surface of the first guide rod 34. The first helical gear 37 is keyed to the first guide rod 34. The guide wheel 36 is connected to the side of the support plate 33 through the support plate 33 and is fixedly connected to the second helical gear 38. The second helical gear 38 and the first helical gear 37 mesh with each other.

[0059] As a technical optimization of the present invention, the rotation of the first guide rod 34 is converted into the rotation of the guide wheel 36 by the meshing of the first helical gear 37 and the second helical gear 38. The first helical gear 37 is keyed to the first guide rod 34, and the second helical gear 38 is fixed to the guide wheel 36. The guide wheel 36 rotates while clamping the welding wire, providing auxiliary traction force and reducing the frictional resistance between the welding wire and the guide wheel 36. This helps the welding wire to enter the welding assembly 7 more smoothly and at a uniform speed. This not only enhances the stability of wire feeding but also extends the life of the guide wheel 36, especially addressing the sticking problem that easily occurs with flexible welding wire.

[0060] refer to Figure 9 Both ends of the first guide rod 34 are fixedly connected to the first gear 39. The inner end of the driven wheel 22 extends through to the inner side of the bearing plate 21 and is fixedly connected to the second gear 40. The first gear 39 and the second gear 40 mesh with each other. When the driven wheel 22 is pushed to rotate by the linkage wheel 23, the torque can be used to control the second gear 40 to rotate synchronously.

[0061] As a technical optimization of the present invention, by meshing the first gear 39 and the second gear 40, the rotational torque of the driven wheel 22 is transmitted to the first guide rod 34, which can ensure that the rotation of the guide wheel 36 is synchronized with the damping function of the unwinding mechanism. During unwinding, the driven wheel 22 drives the second gear 40 to control the rotation of the first guide rod 34, thereby driving the guide wheel 36 mechanism to achieve coordinated and unified release, guidance and traction of welding wire.

[0062] refer to Figure 7 Connecting blocks 41 are fixedly connected to the left and right sides of the longitudinal guide rail 6. A shift fork 42 is movably connected to the surface of the connecting block 41 via a pin. The side of the shift fork 42 away from the connecting block 41 extends to the back of the support plate 33. A push rod 43 located inside the shift fork 42 is fixedly connected to the back of the support plate 33. The push rod 43 and the shift fork 42 are slidably connected. When the shift fork 42 swings towards each other, the push rod 43 can push the support plate 33 to move towards each other on the surfaces of the first guide rod 34 and the second guide rail. A steering helical gear 44 is fixedly connected to the outer side of the swing rod 11 and the surface of the shift fork 42. The steering helical gear 44 can control the shift fork 42 to swing inward synchronously when the swing rod 11 swings.

[0063] As a technical optimization of the present invention, the shift fork 42 is movably connected to the longitudinal guide rail 6 through the connecting block 41 and is slidably connected to the support plate 33 through the push rod 43. It can dynamically compensate for the height difference of the welding wire path, always maintain a suitable clamping force, prevent the welding wire from loosening, jamming or bending due to position changes, and save the user the operation steps of manually adjusting the spacing of the support plate 33.

[0064] The working principle and usage process of this invention are as follows: The operator clamps the workpiece 3 to be welded onto the chuck 29 of the tooling assembly 2, then places a new welding wire coil 8 on top of the bracket 10 and pulls one end of the welding wire to extend it through the inner side of the guide wheel 36 into the interior of the welding assembly 7. Then, the operator manually rotates the rotating wheel 17, which drives the screw 14 to rotate, pushing the threaded sleeve 15 to rise vertically through the thread. The sliding rods 16 on both sides of the threaded sleeve 15 rise accordingly, pushing the swing rod 11 to swing around the pin axis to the top of the bracket 10. When the roller 19 at the front end of the swing rod 11 presses the connecting shaft of the welding wire coil 8 tightly onto the bracket 10, a quick and secure tool-free locking is achieved. At this time, the transmission wheel 20 on the outer side of the roller 19 and the driven wheel 22 are connected. During the intermeshing process, as the rocker arm 11 swings with the roller 19, the rotating helical gear on the outer side of the longitudinal guide rail 6 transmits the swing torque of the rocker arm 11 to the shift fork 42. The steering helical gear 44, fixed on the outer side of the rocker arm 11 and the surface of the shift fork 42, interact with each other, causing the shift fork 42 to swing in opposite directions as it moves. This swing tendency is transmitted to the support plate 33 through the push rod 43, dynamically fine-tuning the distance between the two guide wheels 36 to maintain a suitable clamping force on the welding wire, preventing the welding wire from loosening or getting stuck due to height changes. Then, the user starts the drive motor 28, which drives the chuck 29 and the workpiece 3 to rotate at a constant speed through its output end. While the drive motor 28 is running, it drives the pulley 31 and belt 32 on its output end to rotate... The drive rod 26 rotates continuously, and the drive rod 26 drives the two linkage wheels 23 mounted on it to rotate synchronously via a key connection. The rotating linkage wheels 23 mesh with and drive the upper driven wheel 22 to rotate, while the drive wheel 20 meshes with and drives the lower driven wheel 22. Therefore, the power will drive the roller 19 to rotate through the drive wheel 20. The roller 19 applies rotational damping to the welding wire coil 8 to prevent the welding wire from being released too loosely and to ensure smooth output as needed. During this process, when the longitudinal guide rail 6 moves, the linkage wheel 23 can slide along the drive rod 26 to maintain power transmission. During the rotation of the driven wheel 22, it drives the second gear 40 at its inner end. The second gear 40 meshes with and drives the first gear 39, which drives the first guide rod 34 to rotate. 4. During rotation, the first helical gear 37 is driven to rotate via a key connection. The first helical gear 37 meshes with and drives the second helical gear 38, which in turn drives the guide wheel 36 to rotate. The guide wheels 36 on the two support plates 33 begin to rotate as they move towards each other and approach the welding wire. The welding wire is drawn out from the welding wire coil 8 and passes through the gap between the two rotating guide wheels 36. The rotating guide wheels 36 not only hold the welding wire to prevent it from swinging and sagging, but also provide auxiliary traction and linear guidance for the movement of the welding wire, improving the stability of the welding wire input. The welding wire, which is stably released and precisely guided by the rotating guide wheels 36, is transported into the welding assembly 7 and precisely deposited onto the surface of the rotating workpiece 3 under the action of the plasma arc, forming a uniform and high-quality weld overlay layer.

[0065] In summary, this plasma welding device for workpiece processing, by setting up a tooling assembly 2 to clamp the workpiece 3 and integrating transverse and longitudinal guide rails 6 to drive and connect the welding assembly 7, allows the workpiece 3 to be fixed and the welding head to move in multiple directions, realizing flexible multi-position welding. At the same time, the welding wire coil 8 is fixed to the front of the longitudinal guide rail 6 through the connecting structure 9, and the welding wire extends directly into the inside of the welding assembly 7, laying the foundation for stable wire feeding and avoiding the wire feeding path deviation caused by the loose structure in traditional devices. Overall, this design simplifies the device layout, facilitates the loading and unloading of the workpiece 3 and the control of the welding process, and improves the convenience of operation and the reliability of the equipment.

[0066] 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.

[0067] 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. A plasma cladding apparatus for workpiece processing, comprising a base (1); characterized in that: A tooling assembly (2) is provided on the top of the machine base (1). A workpiece (3) is snapped onto the output end of the tooling assembly (2). A crossbeam (4) is fixedly connected to the right side of the top of the machine base (1). A transverse guide rail (5) is fixedly connected to the top of the crossbeam (4). A longitudinal guide rail (6) is driven to the surface of the transverse guide rail (5). A welding assembly (7) is driven to the surface of the longitudinal guide rail (6). A welding wire roll (8) is provided on the front of the longitudinal guide rail (6). The welding wire wound on the surface of the welding wire roll (8) extends into the interior of the welding assembly (7). A connecting structure (9) is provided on the surface of the longitudinal guide rail (6). The connecting structure (9) is used to connect and fix the welding wire roll (8). The connecting structure (9) includes a fixed... A bracket (10) is fixedly connected to the front of the longitudinal guide rail (6). The bracket (10) is located at the top of the welding assembly (7). The connecting shaft of the welding wire coil (8) overlaps the top of the bracket (10) and is movably connected to the bracket (10). The left and right sides of the longitudinal guide rail (6) are movably connected to a swing rod (11) via a pin. The front end of the swing rod (11) extends to the outside of the bracket (10) and is located at the top of the connecting shaft of the welding wire coil (8). The swing rod (11) presses and fixes the welding wire coil (8) inside the bracket (10). A transmission structure (12) is provided on the back of the longitudinal guide rail (6). The transmission structure (12) can control the swing angle of the swing rod (11). The transmission structure (12) includes a fixed connection to the longitudinal guide rail (6). The connecting frame (13) on the back of the guide rail (6) has a screw (14) movably connected inside the connecting frame (13) via a bearing. The screw (14) has a threaded sleeve (15) connected to its surface. The sleeve (15) is located inside the rocker arm (11). Both sides of the sleeve (15) are fixedly connected to a slide rod (16) located inside the rocker arm (11). The slide rod (16) is slidably connected to the rocker arm (11). The top end of the screw (14) passes through the connecting frame (13) and extends to the top of the connecting frame (13). The top end of the screw (14) is fixedly connected to a rotating wheel (17) located at the top of the connecting frame (13). When the screw (14) rotates, it can use the thread to push the sleeve (15) to move vertically and use the slide rod to move the sleeve. (16) Push the swing arm (11) to swing. The front end of the swing arm (11) is provided with an unwinding structure (18). The unwinding structure (18) can control the release of the welding wire roll (8). The unwinding structure (18) includes a roller (19) movably connected to the front end of the swing arm (11) through a pin. The roller (19) is made of rubber. The outer surface of the roller (19) is in contact with the surface of the connecting shaft of the welding wire roll (8). The outer end of the roller (19) extends to the outside of the swing arm (11) and is fixedly connected to a transmission wheel (20). Both sides of the bracket (10) are fixedly connected to a bearing plate (21). The outer side of the bearing plate (21) is movably connected to a driven wheel (22) located at the bottom of the transmission wheel (20) through a bearing.The driven wheel (22) meshes with the transmission wheel (20). A linkage wheel (23) located at the bottom of the driven wheel (22) is movably connected to the outer side of the bearing plate (21) via a bearing. The linkage wheel (23) meshes with the driven wheel (22). A linkage structure (24) is provided on the top of the base (1). The linkage structure (24) can control the synchronous rotation of the two linkage wheels (23) while ensuring that the linkage wheels (23) can move horizontally following the longitudinal guide rail (6).

2. The plasma cladding apparatus for workpiece processing according to claim 1, characterized in that: The linkage structure (24) includes columns (25) fixedly connected to the top two sides of the base (1). The inner side of the column (25) is movably connected to the transmission rod (26) through the bearing. The linkage wheel (23) is sleeved on the surface of the transmission rod (26) and is keyed to the transmission rod (26). The linkage wheel (23) can slide on the surface of the transmission rod (26) and can rotate using the torque of the transmission rod (26).

3. The plasma welding apparatus for workpiece processing according to claim 2, characterized in that: The tooling assembly (2) includes a support frame (27) fixedly connected to the top of the machine base (1). A drive motor (28) is fixedly connected to one side of the support frame (27). The output end of the drive motor (28) extends through to the other side of the support frame (27) and is fixedly connected to a chuck (29). The workpiece (3) is clamped on the surface of the chuck (29) and the drive motor (28) can use the chuck (29) to carry the workpiece (3) to rotate. The output end of the drive motor (28) is provided with a drive component (30). The drive component (30) can control the rotation of the drive rod (26) when the drive motor (28) is running.

4. The plasma cladding apparatus for workpiece processing according to claim 3, characterized in that: The drive component (30) includes pulleys (31) that are fixedly connected to the surfaces of the drive motor (28) and the drive rod (26), respectively, and a belt (32) is fitted on the surface of the pulleys (31).

5. The plasma cladding apparatus for workpiece processing according to claim 4, characterized in that: The inner side of the bearing plate (21) is provided with two mutually symmetrical support plates (33). The inner side of the bearing plate (21) is provided with a first guide rod (34) and a second guide rod (35). The first guide rod (34) is located on top of the second guide rod (35). The support plate (33) is respectively sleeved on the surface of the first guide rod (34) and the second guide rod (35) and slidably connected to them. The inner side of the support plate (33) is movably connected with a guide wheel (36). The guide wheel (36) is located on both sides of the welding wire and contacts the surface of the welding wire.

6. The plasma welding apparatus for workpiece processing according to claim 5, characterized in that: The second guide rod (35) is fixedly connected to the bearing plate (21), and the first guide rod (34) is movably connected to the bearing plate (21) via a bearing. A first helical gear (37) sleeved on the surface of the first guide rod (34) is movably connected to the side of the support plate (33) near the first guide rod (34) via a bearing. The first helical gear (37) is keyed to the first guide rod (34). The guide wheel (36) passes through the support plate (33) and is fixedly connected to the second guide rod (35) on the side near the support plate (33). Helical gear (38), the second helical gear (38) meshes with the first helical gear (37), the first guide rod (34) is fixedly connected to both ends of the first gear (39), the inner end of the driven wheel (22) passes through to the inner side of the bearing plate (21) and is fixedly connected to the second gear (40), the first gear (39) meshes with the second gear (40), when the driven wheel (22) is pushed to rotate by the linkage wheel (23), the torque can be used to control the second gear (40) to rotate synchronously.

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