Shield tail brush plasma welding workbench

Abstract

The invention provides a shield tail brush plasma welding workbench which comprises a device body and further comprises a feeding device on one side of the device body, and a carding mechanism is arranged at the feeding end of the feeding device. The carding mechanism comprises a carding frame arranged at the feeding end of the feeding device, an air cylinder is installed on the carding frame, a telescopic base is arranged at the output end of the air cylinder, a walking assembly is arranged on the telescopic base, a vibration assembly is arranged on the walking assembly, and a carding assembly is arranged at the top end of the walking assembly. Automatic attaching type carding of shield tail brush steel wire bundles is achieved, the walking assembly moves along a preset track, the vibration assembly exerts bidirectional vibration to scatter and uniformize steel wire tension, the carding assembly completes gridding carding and stretching shaping, the problems that manual carding is low in efficiency, damage is prone to occurring, and forming is uneven are effectively solved, and the working efficiency is improved. And a reliable guarantee is provided for subsequent high-quality welding.

Description

Technical Field

[0001] This invention relates to the field of plasma welding technology, and in particular to a plasma welding workbench for a shield tail brush. Background Technology

[0002] The tail brush is a brush-shaped seal on a tunnel boring machine (TBM), installed at the rear end of the machine. By injecting a certain amount of viscous grease filler between the tail brushes, a seal is achieved between the TBM and the tunnel lining segments. The tail brush plays a crucial role in preventing groundwater, outer soil, and grout from flowing into the tunnel; its quality directly affects the progress, quality, and safety of the tunnel boring project. After the tail brush is assembled, the base plate and pins are welded together using a welding device.

[0003] Chinese patent CN202511490296.4 discloses a semi-automatic plasma arc welding worktable, comprising: a T-slot worktable, in which a fixed-fit slider is slidably installed; a notch is formed on the front side of the top face of the fixed-fit slider; a columnar limiting groove is formed on the front side of the bottom face of the inner end of the notch; an insertion hole is formed at the axial center of the bottom surface of the inner end of the columnar limiting groove, penetrating the bottom end face of the fixed-fit slider; a thin-film pressure sensor is mounted around the inner circumferential surface of the insertion hole adjacent to the bottom opening. Based on the auxiliary monitoring structure of the insertion post, rubber block, and thin-film pressure sensor, this worktable can simultaneously trigger an early warning if the workpiece, while clamped, is subjected to external impact or other factors causing slight displacement. This solves the technical problem of the widely used plasma arc welding T-slot worktables in the current industrial manufacturing field, which cannot monitor the workpiece clamping state.

[0004] This solution can monitor and warn of the workpiece clamping status, but it does not provide a dedicated integrated solution for combing, positioning and welding of workpieces with multi-bundle steel wire structures, such as shield tail brushes. In particular, it lacks an automated combing and forming auxiliary device for the steel wire bundles, which affects the assembly accuracy and efficiency before welding. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a shield tail brush plasma welding workbench that achieves the combing function through a combing mechanism in conjunction with a feeding device, thereby solving the problem of low assembly accuracy and efficiency before welding.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A plasma welding workbench for shield tail brushes includes a device body and a feeding device on one side of the device body. The feeding end of the feeding device is equipped with a combing mechanism. A device base is mounted on the device body, and a main unit is mounted on the device base. An integrated control system is mounted on the main unit. A turntable is movably connected to the device base, and multiple workstations are arranged on the turntable, with workpieces placed on each workstation. The combing mechanism includes a combing frame located at the feeding end of the feeding device. A cylinder is mounted on the combing frame, and a telescopic seat is located at the output end of the cylinder. A traveling component is mounted on the telescopic seat, and a vibration component is mounted on the traveling component. A combing component is located at the top of the traveling component.

[0008] The main unit is equipped with a ventilation fan on top. A motor a is installed inside the base of the device. A drive gear a is fixedly connected to the top of the output shaft of the motor a. A gear ring that meshes with the drive gear a is fixedly connected to the bottom of the turntable. A riveting device is installed under one set of the workstations. Multiple sets of rivets are installed on the output end of the riveting device. A rivet clamp is installed on another set of the workstations. A welding assembly is also installed inside the base of the device. The workpiece includes a base plate positioned on the workstation. A pressure plate is installed inside the base plate. A steel wire bundle is installed inside the pressure plate. The base plate, pressure plate, and steel wire bundle are stacked. The steel wire bundle is bent under pressure. Riveting holes are opened on the workstations.

[0009] The welding assembly includes an X-axis displacement unit disposed within the base of the device, a Z-axis displacement unit disposed on the X-axis displacement unit, and a plasma welding torch disposed on the Z-axis displacement unit.

[0010] The feeding device includes a base frame located on one side of the device body, a motor b installed on one side of the base frame, a bottom conveyor belt on the base frame, a top frame on the base frame, two sets of L-shaped limiting plates fixedly connected to the top frame, and multiple sets of top conveying rollers movably connected under each of the two sets of L-shaped limiting plates.

[0011] The walking assembly includes: a bracket mounted on the telescopic seat; a linear slide fixedly connected to one side of the bracket; an input shaft movably connected to one end of the linear slide; a transmission box mounted on the linear slide; a linear lead screw fixedly connected to one end of the input shaft; a nut slider movably connected to the linear slide; a spring square tube fixedly connected to the nut slider; a connector located at the bottom end of the spring square tube, which is fixedly connected to the nut slider; a telescopic rod movably connected to the top end of the spring square tube; a connecting rod located at the top end of the telescopic rod; and a U-shaped connecting plate fixedly connected to one side of the connecting rod.

[0012] The walking assembly further includes: a walking slider, which is fixedly connected to one side of the U-shaped connecting plate; a guide rail, which is fixedly connected to the bracket, and the guide rail is provided with a first stroke segment and a second stroke segment for guidance along its extension direction, the arrangement of the first stroke segment and the second stroke segment being adapted to the processing trajectory of the bending section of the workpiece; and a guide bar, which is provided on the inner wall of the guide rail.

[0013] The vibration assembly includes: a drive shaft movably connected to the outside of the spring square tube; a bevel gear a fixedly connected to the top of the drive shaft; a rotating wheel movably connected to the outside of the spring square tube; a bevel gear b disposed on one side of the rotating wheel and meshing with the bevel gear a; gear teeth, multiple sets of gear teeth disposed on the outer wall of the rotating wheel; tooth notches, tooth notches formed in the gaps between the multiple sets of gear teeth; a rack a fixedly connected to the telescopic rod; and a rack notch located in the lower half of the rack a.

[0014] The vibration assembly further includes: a structural plate disposed on one side of the U-shaped connecting plate; a square tube connecting plate fixedly connected to the underside of the structural plate; a turntable movably connected to the structural plate; a rotating shaft disposed on one side of the turntable; a drive gear b fixedly connected to the other end of the rotating shaft; a connecting rod disposed on the other side of the turntable; a pin fixedly connected to the turntable; a sliding groove formed on the connecting rod; a half gear disposed at the bottom end of the connecting rod; a rack b fixedly connected to the top end of the telescopic rod, the rack b meshing with the drive gear b; a rack movably connected to one side of the structural plate, the rack meshing with the half gear; and a traction plate disposed on the rack.

[0015] The combing assembly includes: a U-shaped seat, which is movably connected to one side of the U-shaped connecting plate; a transverse toothed plate, with multiple sets of transverse toothed plates fixedly connected inside the U-shaped seat; transverse teeth, which are disposed at one end of the transverse toothed plate; a first movable plate, with multiple sets of first movable plates movably connected inside the multiple sets of transverse toothed plates; and a first screw, which is connected through to one end of the multiple sets of first movable plates.

[0016] The combing assembly further includes: longitudinal toothed plates, multiple sets of which are fixedly connected to the first movable plate; longitudinal teeth a, which are disposed on the longitudinal toothed plates; longitudinal teeth b, which are disposed at one end of the longitudinal toothed plates; a second movable plate, multiple sets of which are movably connected to the multiple sets of transverse toothed plates; a clamping plate, which is fixedly connected to one side of the second movable plate; a notch, multiple sets of which are formed on the clamping plate; a second screw, which is connected through to one end of the multiple sets of second movable plates; a lifting slide, which is movably connected to the U-shaped seat; an adjusting slider, which is movably connected to the lifting slide; and an adjusting screw, which is movably connected to one end of the lifting slide.

[0017] The beneficial effects of this invention are as follows:

[0018] (1) This invention effectively solves the key problems of low efficiency, easy damage, and difficulty in uniformly sorting and preforming complex curved shapes of steel wire bundles by setting up a special sorting mechanism that integrates a walking component, a vibration component, and a sorting component, and making them work together. Specifically, the walking component drives the sorting component to follow a trajectory adapted to the curved section of the steel wire bundle through the cooperation of the guide rail and the walking slider; the vibration component converts the walking power into the composite reciprocating vibration of the sorting component in the vertical and horizontal directions through mechanical transmission, which efficiently breaks up the internally entangled steel wires and evenly distributes the tension; the sorting component realizes the fine sorting and plastic fixation of the steel wire bundle through the grid-like interlacing and breaking of the transverse toothed plate and the stretching and shaping of the end clamping plate. This integrated sorting solution significantly improves the sorting quality, consistency and efficiency, and lays a solid foundation for subsequent high-precision welding.

[0019] (2) This invention uses a multi-station rotary table and integrates a feeding device, a combing mechanism, a riveting device, a nail clamp, and a welding component to build a fully automated workstation from raw material feeding, wire combing, component pre-fixing to final welding. This solves the problems of scattered processes, poor positioning accuracy, and low production efficiency in the traditional shield tail brush production. The rotary table rotates precisely under the drive of motor a, and sequentially sends the workpiece to the combing, riveting, and welding stations, realizing seamless connection and precise positioning between processes. The riveting device and nail clamp complete the mechanical pre-fixation of the base plate, pressure plate, and wire bundle before welding, ensuring the absolute stability of the component position during welding. This integrated design greatly improves the automation level, reliability, and consistency of product size in the production process.

[0020] (3) This invention solves the problems of large heat input, severe deformation and unstable weld quality of traditional welding methods by configuring a precision welding assembly consisting of an X-axis displacement unit, a Z-axis displacement unit and a plasma welding gun, and applying it to workpieces that have been automatically combed and pre-fixed. Under the control of the integrated control system, the welding assembly can drive the plasma welding gun to perform high-precision displacement and perform local and rapid plasma arc welding on the riveting pre-fixed area. This method has high energy density and small heat-affected zone, which can effectively control welding deformation and achieve high-strength and high-sealing fusion of the base plate, pressure plate and the end of the wire bundle, thereby ensuring the long-term sealing performance and service life of the shield tail brush product under harsh working conditions, and realizing high-quality and high-efficiency automated welding production. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the side structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall disassembled structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the turntable structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the feeding device of the present invention;

[0026] Figure 6 This is a partial structural diagram of the combing mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the walking component structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the vibration component structure of the present invention;

[0029] Figure 9 This is a partial structural diagram of the vibration component of the present invention;

[0030] Figure 10 This is a schematic diagram of the overall structure of the components of this invention;

[0031] Figure 11 This is a schematic diagram of a partial structure of the component of the present invention;

[0032] Figure 12 This is a schematic diagram of the horizontal toothed plate split structure of the present invention;

[0033] Figure 13 This is a schematic diagram of the shield tail brush structure of the present invention.

[0034] The reference numerals in the accompanying drawings of this application are as follows: 1. Device body; 101. Device base; 102. Main unit; 103. Integrated control system; 104. Ventilation fan; 105. Turntable; 1051. Workstation; 1052. Motor a; 1053. Drive gear a; 1054. Gear ring; 106. Workpiece; 1061. Base plate; 1062. Pressure plate; 1063. Steel wire bundle; 1064. Bending section; 1065. Rivet hole; 107. Riveting device; 1071. Rivet; 108. Rivet pliers; 109. Welding assembly; 1091. X-axis displacement unit; 1092. Z-axis 1. Displacement unit; 2. Plasma welding torch; 3. Feeding device; 4. Base frame; 5. Motor b; 6. Bottom conveyor belt; 7. Top frame; 8. L-shaped limiting plate; 9. Top conveyor roller; 10. Combing mechanism; 11. Combing frame; 22. Cylinder; 33. Telescopic seat; 4. Walking assembly; 5. Support frame; 6. Linear slide; 7. Input shaft; 8. Transmission box; 9. Linear screw; 10. Nut slider; 11. Spring square tube; 12. Connecting part; 13. Telescopic rod; 14. Connecting rod; 15. Connecting rod; 16. Connecting rod; 17. Connecting rod; 18. Connecting rod; 19. Connecting rod; 10. Displacement unit; 10. Plasma welding torch; 10. Plasma welding torch; 10. Feeding device; 10. Base frame; 10. Motor b; 10. Bottom conveyor belt; 10. Bottom frame; 10. Top frame; 10. L-shaped limiting plate; 19. Top conveyor roller; 10. Top conveyor roller; 10. Combing mechanism; 10. Combing frame; 10. L-shaped limiting plate; 19. L-shaped limiting plate; 10. L-shaped connecting rod; 10. L-shaped connecting rod; 19. L-shaped connecting rod; 10 ...0. L-shaped connecting rod; 10. L-shaped connecting rod; 10. L-shaped connecting rod 3142. Connecting rod; 315. U-shaped connecting plate; 316. Traveling slider; 317. Guide rail; 3161. First stroke section; 3162. Second stroke section; 3163. Guide bar; 32. Vibration assembly; 321. Drive shaft; 3211. Bevel gear a; 322. Rotary wheel; 3221. Bevel gear b; 3222. Gear teeth; 3223. Tooth notch; 323. Rack a; 3231. Rack notch; 324. Structural plate; 3241. Square tube connecting plate; 325. Turntable; 3251. Rotating shaft; 3252. Drive gear b; 3253. Connecting rod; 3254. 3255. Pin; 3256. Slide groove; 3257. Half gear; 328. Rack b; 329. Tooth bar; 3271. Traction plate; 330. Combing assembly; 331. U-shaped seat; 332. Transverse toothed plate; 3321. Transverse tooth; 333. First movable plate; 3331. First screw; 334. Longitudinal toothed plate; 3341. Longitudinal tooth a; 3342. Longitudinal tooth b; 335. Second movable plate; 3351. Clamping plate; 3352. Notch; 3353. Second screw; 336. Lifting slide; 3361. Adjusting slider; 3362. Adjusting lead screw. Detailed Implementation

[0035] 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.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Example 1: As Figures 1-5 As shown, this embodiment provides a shield tail brush plasma welding workbench. The shield tail brush plasma welding workbench includes a device body 1 and a feeding device 2 on one side of the device body 1. The feeding end of the feeding device 2 is provided with a combing mechanism 3. A device base 101 is provided on the device body 1. A main unit 102 is provided on the device base 101. An integrated control system 103 is provided on the main unit 102. A turntable 105 is movably connected to the device base 101. Multiple workstations 1051 are provided on the turntable 105. Workpieces 106 are placed on the multiple workstations 1051.

[0039] A ventilation fan 104 is installed on the top of the main unit 102. A motor a1052 is installed inside the device base 101. A drive gear a1053 is fixedly connected to the top of the output shaft of the motor a1052. A gear ring 1054 that meshes with the drive gear a1053 is fixedly connected to the bottom of the turntable 105. A riveting device 107 is installed under one set of workstations 1051. Multiple sets of rivets 1071 are installed on the output end of the riveting device 107. On another set of workstations 1051... The device is equipped with a nail clamp 108 and a welding assembly 109 is also provided in the base 101. The workpiece 106 includes a base plate 1061 positioned on the work station 1051. A pressure plate 1062 is provided in the base plate 1061 and a steel wire bundle 1063 is provided in the pressure plate 1062. The base plate 1061, the pressure plate 1062 and the steel wire bundle 1063 are stacked. The steel wire bundle 1063 is compressed to form a bent section 1064. A rivet hole 1065 is provided on the work station 1051.

[0040] The welding assembly 109 includes an X-axis displacement unit 1091 disposed in the device base 101, a Z-axis displacement unit 1092 disposed on the X-axis displacement unit 1091, and a plasma welding torch 1093 disposed on the Z-axis displacement unit 1092.

[0041] In this embodiment, the drive gear a1053 is driven to rotate by the motor a1052. The gear ring 1054 meshes with the drive gear a1053 to drive the turntable 105 to rotate, realizing the intermittent rotation of the turntable 105. The workpiece 106 is sent to different positions. When the workpiece 106 rotates to the riveting device 107, the rivet 1071 is pressed into the rivet hole 1065 of the workpiece 106 to complete the positioning and preliminary connection. When it rotates to the welding assembly 109, the plasma welding gun 1093 is driven to move by the X-axis displacement unit 1091 and the Z-axis displacement unit 1092. The plasma welding gun 1093 performs plasma welding on the workpiece 106. Before welding, the workpiece 106 is pressure-positioned by the initial pressure structure of the rivet clamp 108 to maintain the stability of the subsequent plasma welding. After welding, the excess rivets 1071 are cut off.

[0042] The feeding device 2 includes a base frame 201 located on one side of the device body 1. A motor b202 is installed on one side of the base frame 201. A bottom conveyor belt 203 is installed on the base frame 201. A top frame 204 is installed on the base frame 201. Two sets of L-shaped limiting plates 205 are fixedly connected to the top frame 204. Multiple sets of top conveying rollers 206 are movably connected to the bottom of each of the two sets of L-shaped limiting plates 205.

[0043] In this embodiment, the motor b202 and belt drive the bottom conveyor belt 203 and multiple sets of top conveyor rollers 206 to rotate synchronously. The workpiece 106 is fed and transported through contact with the top and bottom of the conveyor belt, ensuring that the workpiece 106 is fed to the workstation 1051 in a suitable processing posture, thus improving production efficiency. This embodiment is essentially a plasma arc welding machine (equipment).

[0044] Example 2: Figures 6-13 As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0045] The combing mechanism 3 includes a combing frame 301 located at the feeding end of the feeding device 2. A cylinder 302 is installed on the combing frame 301. A telescopic seat 303 is provided at the output end of the cylinder 302. A walking component 31 is provided on the telescopic seat 303. A vibration component 32 is provided on the walking component 31. A combing component 33 is provided at the top of the walking component 31.

[0046] The walking assembly 31 includes: a bracket 311, which is mounted on a telescopic seat 303; a linear slide 312, which is fixedly connected to one side of the bracket 311; an input shaft 3121, which is movably connected to one end of the linear slide 312; a transmission box 3122, which is mounted on the linear slide 312; a linear lead screw 3123, which is fixedly connected to one end of the input shaft 3121; and a nut slider 3124, which is movably connected to the linear slide 312. Spring square tube 313, fixedly connected to nut slider 3124; connector 3131, located at the bottom end of spring square tube 313, fixedly connected to nut slider 3124 via connector 3131; telescopic rod 314, movably connected to the top end of spring square tube 313; connecting rod 3141, located at the top end of telescopic rod 314; U-shaped connecting plate 3142, fixedly connected to one side of connecting rod 3141.

[0047] The traveling assembly 31 also includes: a traveling slider 315, which is fixedly connected to one side of the U-shaped connecting plate 3142; a guide rail 316, which is fixedly connected to the bracket 311, and the guide rail 316 is provided with a first stroke segment 3161 and a second stroke segment 3162 for guidance along its extension direction, the arrangement of the first stroke segment 3161 and the second stroke segment 3162 being adapted to the processing trajectory of the bending segment 1064 of the workpiece 106; and a guide bar 3163, which is provided on the inner wall of the guide rail 316.

[0048] In this embodiment, the cylinder 302 drives the telescopic seat 303 to extend and retract, thereby providing power to push the combing assembly 33 into the steel wire bundle 1063 of the workpiece 106 for combing. The input shaft 3121 drives the linear lead screw 3123 to rotate. The connection between the nut slider 3124 and the linear lead screw 3123, as well as the guidance of the linear slide seat 312, drives the walking slider 315. The walking slider 315 drives the combing assembly 33 on the spring square tube 313 and the telescopic rod 314 to move. During the movement, the top of the telescopic rod 314 is fixedly connected to the walking slider 315. When the displacement occurs, the walking slider 315 slides along the guide rail 316. The guide rail 316 guides and restricts the telescopic rod 314 to descend along the first stroke segment 3161 and the second stroke segment 3162 of the guide rail 316, so that the combing assembly 33 moves repeatedly along the pre-bending direction of the steel wire bundle 1063 of the workpiece 106, thereby realizing the movement of the combing stroke.

[0049] The vibration assembly 32 includes: a drive shaft 321, which is movably connected to the outside of the spring square tube 313; a bevel gear a3211, which is fixedly connected to the top of the drive shaft 321; a rotating wheel 322, which is movably connected to the outside of the spring square tube 313; a bevel gear b3221, which is located on one side of the rotating wheel 322 and meshes with the bevel gear a3211; gear teeth 3222, with multiple sets of gear teeth 3222 located on the outer wall of the rotating wheel 322; tooth notches 3223, which are formed in the gaps between the multiple sets of gear teeth 3222; a rack a323, which is fixedly connected to the telescopic rod 314; and a rack notch 3231, which is located in the lower half of the rack a323.

[0050] The vibration assembly 32 further includes: a structural plate 324, which is disposed on one side of the U-shaped connecting plate 3142; a square tube connecting plate 3241, which is fixedly connected to the underside of the structural plate 324; a turntable 325, which is movably connected to the structural plate 324; a rotating shaft 3251, which is disposed on one side of the turntable 325; a drive gear b 3252, which is fixedly connected to the other end of the rotating shaft 3251; a connecting rod 3253, which is disposed on the other side of the turntable 325; and a pin 3254. A pin 3254 is fixedly connected to a turntable 325; a slide 3255 is formed on a connecting rod 3253; a half gear 3256 is located at the bottom end of the connecting rod 3253; a rack b326 is fixedly connected to the top end of a telescopic rod 314 and meshes with a drive gear b3252; a rack 327 is movably connected to one side of a structural plate 324 and meshes with a half gear 3256; and a traction plate 3271 is located on the rack 327.

[0051] In this embodiment, the transmission shaft 321 rotates when the input shaft 3121 rotates via gear transmission within the transmission box 3122. This rotation, through the meshing of bevel gear b3221 and bevel gear a3211 on the rotating wheel 322, causes the rotating wheel 322 to rotate. During rotation, a set of teeth 3222 on the outer side of the rotating wheel 322 meshes with the rack a323, causing the rack a323 to move up and down a short distance. When the rotating wheel 322 rotates to the tooth notch 3223, the rack a323 moves up and down to the rack notch 3231, causing the rack a323 to disengage. After disengagement, it is reset by the spring return force within the spring square tube 313, thus achieving the reciprocating up and down vibration of the telescopic rod 314 and the combing assembly 33 in the vertical direction. The reciprocating up and down movement of the telescopic rod 314 drives the rack b326 to reciprocate, and the drive gear b3252 interacts with the rack... The meshing of b326 drives the rotating shaft 3251 and the turntable 325 to reciprocate. The rotation, through the movable connection between the pin 3254 on the turntable 325 and the connecting rod 3253, drives the half gear 3256 to reciprocate. The meshing of the half gear 3256 and the rack 327 drives the rack 327 to reciprocate and extend. The rack 327 drives the combing assembly 33 to reciprocate and extend on the U-shaped connecting plate 3142 through the traction plate 3271. This achieves the reciprocating and extending vibration of the combing assembly 33 in the horizontal direction. The reciprocating movement in two directions breaks up the internal entanglement and separates the steel wires that are attached to each other, distributes the tension more evenly, reduces damage and wire breakage, and avoids the situation where the force is concentrated on a few steel wires that bear all the tension when combing in only one direction, which may cause them to be overstretched or even broken. This significantly improves the efficiency of the overall process.

[0052] The combing component 33 includes: a U-shaped seat 331, which is movably connected to one side of a U-shaped connecting plate 3142; a transverse toothed plate 332, with multiple sets of transverse toothed plates 332 fixedly connected inside the U-shaped seat 331; transverse teeth 3321, which are located at one end of the transverse toothed plate 332; a first movable plate 333, with multiple sets of first movable plates 333 movably connected inside the multiple sets of transverse toothed plates 332; and a first screw 3331, which is connected through to one end of the multiple sets of first movable plates 333.

[0053] The combing assembly 33 further includes: longitudinal toothed plates 334, multiple sets of longitudinal toothed plates 334 fixedly connected to the first movable plate 333; longitudinal teeth a3341, longitudinal teeth a3341 disposed on the longitudinal toothed plates 334; longitudinal teeth b3342, longitudinal teeth b3342 disposed at one end of the longitudinal toothed plates 334; a second movable plate 335, multiple sets of second movable plates 335 movably connected within multiple sets of transverse toothed plates 332; and a clamping plate 3351, clamping plate 3351 fixedly connected to the second movable plate 333. One side of the movable plate 335; notches 3352, multiple sets of notches 3352 are formed on the clamping plate 3351; second screw 3353, the second screw 3353 is connected through to one end of multiple sets of second movable plates 335; lifting slide 336, the lifting slide 336 is movably connected to the lower part of the U-shaped seat 331; adjusting slider 3361, the adjusting slider 3361 is movably connected to the lifting slide 336; adjusting screw 3362, the adjusting screw 3362 is movably connected to one end of the lifting slide 336.

[0054] In this embodiment, the horizontal displacement of the telescopic seat 303 applies pressure, allowing multiple sets of evenly distributed longitudinal toothed plates 334 to be inserted into the wire bundle 1063. This causes the wire bundle 1063 to be divided into multiple segments laterally. After insertion, the adjusting screw 3362 drives the adjusting slider 3361 to adjust its position left and right, causing the push block on the adjusting slider 3361 to move below the first screw 3331. The push block pushes the first screw 3331 upward, thereby pushing the multiple sets of longitudinal toothed plates 334 on the multiple sets of first movable plates 333 upward. This further divides each segment of the transverse wire bundle 1063 longitudinally, causing the wire bundle 1063 at the insertion point to be dispersed. With the drive of the walking component 31, the wire bundle moves along the wire bundle. The outline of 1063 is combed to effectively separate the steel wires that are stuck, crossed, or bent in the horizontal and vertical directions. When the combing is finished, the combing component 33 is driven to the end of the steel wire bundle 1063 by the walking component 31. The adjusting screw 3362 drives the adjusting slider 3361 to move to the right below the second screw 3353, and pushes the second screw 3353 upward by the pushing block. The second screw 3353 drives the clamping plates 3351 on the multiple sets of second movable plates 335 to move upward, thereby clamping the bottom end of the steel wire bundle 1063. The walking component 31 is continuously driven to travel a certain distance to apply a certain tension to the bottom end of the steel wire bundle 1063. After being stored for a period of time, it helps the steel wire to become plastic and reduces the impact of the steel wire elasticity.

[0055] Work steps

[0056] Step 1, Loading and Automated Combing Process: The robotic arm places the lower end of workpiece 106 onto the bottom conveyor belt 203, and the upper end of workpiece 106 is engaged under the L-shaped limiting plate 205 to complete the initial loading. The combing mechanism 3 is activated. First, the cylinder 302 drives the telescopic seat 303 to extend and retract, pushing and inserting the combing component 33, which is installed at the top of the walking component 31, into the steel wire bundle 1063 of workpiece 106. The walking component 31 starts working, and its input shaft 3121 drives the linear screw 3123 to rotate, driving the nut slider 3124 to move along the linear slide 312, thereby driving the nut slider 3124 to move along the linear slide 312. The fixedly connected spring square tube 313, telescopic rod 314 and the entire combing assembly 33 generate horizontal displacement. During this process, the walking slider 315 fixed to the top of the telescopic rod 314 slides along the guide rail 316 fixed on the bracket 311. The guide rail 316 is provided with a first stroke section 3161 and a second stroke section 3162. Its arrangement is adapted to the processing trajectory of the bending section 1064 of the wire bundle 1063. The walking slider 315 moves along this specific trajectory, forcing the combing assembly 33 to move horizontally while being able to rise and fall according to the predetermined bending direction of the wire bundle 1063, so as to achieve a close-fitting combing movement for complex contours.

[0057] Simultaneously, the vibration assembly 32 is activated, and the gear transmission within the transmission box 3122 transmits the rotation of the input shaft 3121 to the transmission shaft 321. Through the meshing of bevel gear a3211 and bevel gear b3221, the rotating wheel 322 rotates. The teeth 3222 on the outer wall of the rotating wheel 322 periodically mesh and disengage with the rack a323 fixed on the telescopic rod 314 at the tooth notch 3223 and rack notch 3231. Combined with the spring return force inside the spring square tube 313, this drives the telescopic rod 314 and the combing assembly 33 to generate short-range, high-frequency reciprocating vibrations in the vertical direction. On the other hand, the vertical reciprocating motion of the telescopic rod 314 drives the rack b326 at its top to move synchronously. The rack b326 interacts with the drive gear b3211. 52 meshes, driving the rotating shaft 3251 and the turntable 325 to reciprocate. The pin 3254 on the turntable 325 slides in the groove 3255 of the connecting rod 3253, causing the half gear 3256 at the bottom of the connecting rod 3253 to reciprocate. The half gear 3256 then drives the meshing rack 327 and the traction plate 3271 to reciprocate in the horizontal direction. The traction plate 3271 finally drives the U-shaped seat 331 of the combing assembly 33 to reciprocate horizontally on the U-shaped connecting plate 3142, generating horizontal vibration. This two-dimensional vibration, which combines vertical and horizontal, aims to effectively break up the entanglement inside the wire bundle 1063 and separate the wires that are close to each other, so that the tension distribution is more uniform and avoids the risk of local overload and wire breakage caused by unidirectional strong combing.

[0058] The combing component 33 performs specific combing actions: Upon initial insertion, multiple sets of transverse toothed plates 332 fixed within the U-shaped seat 331 and longitudinal toothed plates 334 fixed on the first movable plate 333 are inserted into the steel wire bundle 1063. Firstly, it is divided into multiple strands transversely. By rotating the adjusting screw 3362, the adjusting slider 3361 is moved, causing the pushing block on it to push the first screw 3331 upwards, thereby pushing the multiple sets of first movable plates 333 and the longitudinal toothed plates 334 upwards. Each strand of transverse steel wire bundle 1063 is then further subdivided longitudinally, achieving a finely meshed disintegration of the steel wire bundle 1063. Combined with the conforming trajectory movement driven by the walking component 31 and the two-dimensional vibration of the vibration component 32, it efficiently combs away horizontally and vertically adhered, crossed, or bent steel wires. When combing to the end, the adjusting slider 3361 moves below the second screw 3353, pushing it upwards, causing multiple sets of second movable plates 335 and their clamping plates 3351 to move upwards and clamp the wires. Holding the end of the steel wire bundle 1063, the walking component 31 continues to drive it for a distance, applying a controllable tensile force to the steel wire bundle 1063 through the clamping plate 3351 and holding it for a moment. This helps to plastically shape the steel wire and reduce the impact of its elastic recoil on subsequent processes. Subsequently, driven by the motor b202 and via belt transmission, the bottom conveyor belt 203 and multiple sets of top conveyor rollers 206 rotate synchronously. Through contact with the workpiece 106 from above and below, the workpiece 106 is automatically loaded and transported, ensuring that the workpiece 106 is transported to the workstation 1051 in a precise posture that fits the subsequent processing. This process solves the key problems in the production of shield tail brushes, such as low efficiency of manual combing of steel wire bundle 1063, easy damage to steel wires, and difficulty in achieving uniform combing and pre-forming of complex curved shapes. Through fully automated conforming trajectory walking, two-dimensional composite vibration combing, and end stretching and shaping, the combing quality, efficiency, and consistency are significantly improved, laying a solid foundation for subsequent high-precision welding.

[0059] Step 2, Rotation Positioning and Riveting Pre-fixing Process: After the workpiece 106 has been combed, the motor a1052 in the base 101 of the integrated control system 103 starts, driving the drive gear a1053 on its output shaft to rotate. The drive gear a1053 meshes with the gear ring 1054 fixedly connected to the bottom of the turntable 105, thereby driving the entire turntable 105 to perform precise intermittent rotational motion. The turntable 105 is equipped with multiple workstations 1051. By rotating, the workstations 1051 carrying the combed workpiece 106 are sequentially sent to different positions. When the workstation 1051 rotates to below the riveting device 107, the riveting device 107 starts, simultaneously pressing multiple sets of rivets 1071 on its output end into the rivet holes 1065 of the workpiece 106. These rivet holes 1065 penetrate the stacked workpiece. The base plate 1061, pressure plate 1062, and combed steel wire bundle 1063 are pre-fixed. The pressing in of rivets 1071 achieves mechanical interlocking and preliminary firm connection between these three key components. At the same time, the nail clamps 108 set on another station 1051 can assist in pressurizing and positioning the workpiece 106, further ensuring the stability of the components before welding. This process solves the problem of easy displacement and unreliable positioning of the stacked components of the shield tail brush base plate 1061, pressure plate 1062 and steel wire bundle 1063 before welding. Through the precise indexing rotation of the turntable 105 and automated riveting, the components are quickly and accurately pre-fixed, which greatly ensures the absolute stability of the position of the workpiece 106 during subsequent plasma welding, and improves the reliability of the welding process and the consistency of product dimensions.

[0060] Step 3: Plasma Welding and Final Forming Process: After the pre-fixed riveting workpiece 106 is completed, it continues to rotate with the turntable 105 to the welding position. At this time, the welding assembly 109 located in the device base 101 begins to work. Its X-axis displacement unit 1091 and Z-axis displacement unit 1092 move in coordination under the command of the integrated control system 103, accurately positioning and driving the plasma welding gun 1093 to move. The plasma welding gun 1093 scans and welds above the connection area where the rivet 1071 is located, according to the preset path. The high-temperature plasma arc partially melts and fuses the base plate 1061, pressure plate 1062, and the end of the steel wire bundle 1063 fixed by the rivet 1071 into one, forming a high-strength, high-sealing permanent weld, and finally completing the shield tail core brushing. After the core component is welded and formed, excess rivets 1071 protruding from the surface of the workpiece 106 can be cut off by rivet pliers 108 as needed. In addition, the ventilation fan 104 set on the top of the main unit 102 can dissipate heat inside the main unit 102 during the welding process to ensure the stable operation of the electrical control system. This process solves the problems of large heat input, severe deformation, unstable weld quality and low efficiency of traditional welding methods. Through high energy density and high precision plasma arc welding technology, local rapid deposition is achieved, the heat-affected zone is small, welding deformation is strictly controlled, and the weld strength and sealing performance are high. This ensures the long-term sealing performance and service life of the shield tail brush product under harsh working conditions and realizes high-quality and high-efficiency automated welding production.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shield tail brush plasma welding workbench, comprising a device body (1), characterized in that, It also includes a feeding device (2) on one side of the device body (1), and the feeding end of the feeding device (2) is provided with a combing mechanism (3). The device body (1) is provided with a device base (101), the device base (101) is provided with a host (102), the host (102) is provided with an integrated control system (103), the device base (101) is movably connected with a turntable (105), the turntable (105) is provided with multiple workstations (1051), and workpieces (106) are placed on the multiple workstations (1051). The combing mechanism (3) includes a combing frame (301) located at the feeding end of the feeding device (2). A cylinder (302) is installed on the combing frame (301). A telescopic seat (303) is provided at the output end of the cylinder (302). A walking component (31) is provided on the telescopic seat (303). A vibration component (32) is provided on the walking component (31). A combing component (33) is provided at the top of the walking component (31).

2. The plasma welding workbench for shield tail brushes according to claim 1, characterized in that, A ventilation fan (104) is provided on the top of the host (102). A motor a (1052) is installed in the device base (101). A drive gear a (1053) is fixedly connected to the top of the output shaft of the motor a (1052). A gear ring (1054) that meshes with the drive gear a (1053) is fixedly connected to the bottom of the turntable (105). A riveting device (107) is provided under one set of the workstations (1051). Multiple sets of rivets (1071) are provided on the output end of the riveting device (107). A nail clamp (108) is provided on another set of the workstations (1051). A welding assembly (109) is also provided in the device base (101). The workpiece (106) includes a base plate (1061) positioned on the work station (1051), a pressure plate (1062) is provided inside the base plate (1061), a steel wire bundle (1063) is provided inside the pressure plate (1062), the base plate (1061), the pressure plate (1062) and the steel wire bundle (1063) are stacked, the steel wire bundle (1063) is pressed to form a bent section (1064), and a rivet hole (1065) is provided on the work station (1051).

3. The plasma welding workbench for shield tail brushes according to claim 2, characterized in that, The welding assembly (109) includes an X-axis displacement unit (1091) disposed in the device base (101), a Z-axis displacement unit (1092) disposed on the X-axis displacement unit (1091), and a plasma welding torch (1093) disposed on the Z-axis displacement unit (1092).

4. The plasma welding workbench for shield tail brushes according to claim 1, characterized in that, The feeding device (2) includes a base frame (201) located on one side of the device body (1), a motor b (202) installed on one side of the base frame (201), a bottom conveyor belt (203) provided on the base frame (201), a top frame (204) provided on the base frame (201), two sets of L-shaped limiting plates (205) fixedly connected on the top frame (204), and multiple sets of top conveying rollers (206) movably connected under each of the two sets of L-shaped limiting plates (205).

5. A plasma welding workbench for a shield tail brush according to claim 1, characterized in that, The walking assembly (31) includes: a bracket (311) mounted on the telescopic seat (303); a linear slide (312) fixedly connected to one side of the bracket (311); an input shaft (3121) movably connected to one end of the linear slide (312); a transmission box (3122) mounted on the linear slide (312); a linear lead screw (3123) fixedly connected to one end of the input shaft (3121); and a nut slider (3124) movably connected to the linear slide (312). The spring square tube (313) is fixedly connected to the nut slider (3124); the connector (3131) is located at the bottom end of the spring square tube (313), and the spring square tube (313) is fixedly connected to the nut slider (3124) through the connector (3131); the telescopic rod (314) is movably connected to the top end of the spring square tube (313); the connecting rod (3141) is located at the top end of the telescopic rod (314); and the U-shaped connecting plate (3142) is fixedly connected to one side of the connecting rod (3141).

6. A plasma welding workbench for shield tail brushes according to claim 5, characterized in that, The walking assembly (31) further includes: a walking slider (315), which is fixedly connected to one side of the U-shaped connecting plate (3142); a guide rail (316), which is fixedly connected to the bracket (311), and the guide rail (316) is provided with a first stroke segment (3161) and a second stroke segment (3162) for guidance along its extension direction, the arrangement of the first stroke segment (3161) and the second stroke segment (3162) being adapted to the processing trajectory of the curved section (1064) of the workpiece (106); and a guide strip (3163), which is provided on the inner wall of the guide rail (316).

7. A plasma welding workbench for shield tail brushes according to claim 5, characterized in that, The vibration assembly (32) includes: a drive shaft (321), which is movably connected to the outside of the spring square tube (313); a bevel gear a (3211), which is fixedly connected to the top end of the drive shaft (321); a rotating wheel (322), which is movably connected to the outside of the spring square tube (313); and a bevel gear b (3221), which is disposed on one side of the rotating wheel (322). 21) meshes with the bevel gear a (3211); gear teeth (3222), multiple sets of gear teeth (3222) are provided on the outer wall of the rotating wheel (322); tooth notch (3223), the tooth notch (3223) is formed in the gap between multiple sets of gear teeth (3222); rack a (323), the rack a (323) is fixedly connected to the telescopic rod (314); rack notch (3231), the rack notch (3231) is provided in the lower half of the rack a (323).

8. A plasma welding workbench for shield tail brushes according to claim 7, characterized in that, The vibration assembly (32) further includes: a structural plate (324), which is disposed on one side of the U-shaped connecting plate (3142); a square tube connecting plate (3241), which is fixedly connected to the underside of the structural plate (324); a turntable (325), which is movably connected to the structural plate (324); a rotating shaft (3251), which is disposed on one side of the turntable (325); a drive gear b (3252), which is fixedly connected to the other end of the rotating shaft (3251); a connecting rod (3253), which is disposed on the other side of the turntable (325); and a pin (3254), which is a pin... A column (3254) is fixedly connected to the turntable (325); a slide groove (3255) is formed on the connecting rod (3253); a half gear (3256) is located at the bottom end of the connecting rod (3253); a rack b (326) is fixedly connected to the top end of the telescopic rod (314), and the rack b (326) meshes with the drive gear b (3252); a rack (327) is movably connected to one side of the structural plate (324), and the rack (327) meshes with the half gear (3256); and a traction plate (3271) is located on the rack (327).

9. A plasma welding workbench for shield tail brushes according to claim 5, characterized in that, The combing component (33) includes: a U-shaped seat (331), which is movably connected to one side of the U-shaped connecting plate (3142); a transverse toothed plate (332), which is fixedly connected to the U-shaped seat (331); a transverse tooth (3321), which is disposed at one end of the transverse toothed plate (332); a first movable plate (333), which is movably connected to the multiple sets of transverse toothed plates (332); and a first screw (3331), which is connected through to one end of the multiple sets of first movable plates (333).

10. A plasma welding workbench for a shield tail brush according to claim 9, characterized in that, The combing assembly (33) further includes: a longitudinal toothed plate (334), multiple sets of the longitudinal toothed plates (334) being fixedly connected to the first movable plate (333); a longitudinal tooth a (3341), the longitudinal tooth a (3341) being disposed on the longitudinal toothed plate (334); a longitudinal tooth b (3342), the longitudinal tooth b (3342) being disposed at one end of the longitudinal toothed plate (334); a second movable plate (335), multiple sets of the second movable plates (335) being movably connected within multiple sets of the transverse toothed plates (332); and a clamping plate (3351), the clamping plate (3351) being fixedly connected to the second movable plate (333). One side of the movable plate (335); a notch (3352), multiple sets of the notches (3352) are formed on the clamping plate (3351); a second screw (3353), the second screw (3353) is connected through to one end of multiple sets of the second movable plates (335); a lifting slide (336), the lifting slide (336) is movably connected to the U-shaped seat (331); an adjusting slider (3361), the adjusting slider (3361) is movably connected to the lifting slide (336); an adjusting screw (3362), the adjusting screw (3362) is movably connected to one end of the lifting slide (336).

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