Electrostatic spray and cure apparatus for electromagnetic wave absorbing powder paint

Abstract

The application discloses electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coating and relates to the technical field of electrostatic spraying equipment. A track structure and a displacement structure are arranged in a cross joint. The displacement structure comprises a displacement unit and a radial driving unit. The displacement unit is arranged on the track structure and moves up and down along the track structure to drive the radial driving unit to displace synchronously. The radial driving unit comprises a combination plate and a cylinder structure. The cross joint is taken as a spraying object. The track structure and the displacement structure are arranged in the cross joint. The displacement unit of the displacement structure can move up and down along the track structure to drive the radial driving unit to displace synchronously. The distance between the spraying structure and the inner wall of the cross joint is adjusted by the cylinder structure. The spraying structure is moved at different positions by the displacement structure. The coating accumulation near the inlet of the spraying gun, the insufficient spraying and even the omission in deep areas during traditional handheld spraying can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic spraying equipment, in particular to electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coating. Background Art

[0002] A cross joint is a uniquely shaped connector, typically consisting of four ports arranged in a cross shape. It enables the intersection of pipes, rods, or other components in different directions. In fluid transport systems, it redirects and evenly distributes the flow of media. In mechanical structures, it transmits force and motion, and accommodates multi-directional stress and strain. Its unique geometry makes it widely used in numerous engineering fields, providing a critical connection hub for the construction of complex systems.

[0003] A Chinese patent with authorization announcement number CN215964205U discloses an electrostatic spray gun that is easy to replace the nozzle. The nozzle is easy to replace: through the cooperation of the card bead in the docking block and the arc-shaped card groove of the nozzle, and the design of the tightening cover, the tightening cover can be rotated to release the restriction on the card bead, thereby facilitating the removal of the nozzle for replacement. However, each time the nozzle is replaced, the tightening cover needs to be manually rotated, which is relatively cumbersome, and frequent removal of the tightening cover may cause thread wear, affecting the stability of the connection.

[0004] Traditional spraying equipment is mostly designed as a handheld spray gun, applying coating to the exterior surface of a workpiece. This approach can meet basic coating requirements to a certain extent for workpieces with conventional flat surfaces or simple curves. However, when it comes to workpieces with unique structures, such as those with complex internal cavities, channels, or unusual contours, traditional handheld spray equipment exposes serious limitations.

[0005] For example, for some special workpieces with cross-shaped internal cavities, such as specific industrial connectors or functional components, the internal channels are narrow and crisscrossed, making it difficult for traditional handheld spray guns to penetrate these internal spaces for precise spraying. The size and shape of the spray gun nozzle and the instability of the operator's hand-held operation make it impossible to ensure that the paint evenly covers all the internal walls of the workpiece during the spraying process. Paint often accumulates near the spray gun inlet, while deep areas far from the inlet are insufficiently sprayed or even omitted. This not only leads to huge differences in the electromagnetic wave absorption performance of the product in different parts, making it impossible to achieve the expected functional effect, but also due to the uneven coating, it may cause a series of quality problems, such as local corrosion and stress concentration, which seriously affect the mechanical properties and service life of the workpiece.

[0006] To this end, the present invention proposes an electrostatic spraying and curing device for electromagnetic wave absorbing powder coating to solve the above problems. Summary of the Invention

[0007] In view of the above problems in the prior art, the present invention is proposed.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: an electrostatic spraying and curing device for electromagnetic wave absorbing powder coating, comprising a spraying device and a cross joint, the spraying device comprising a track structure and a displacement structure arranged in the cross joint, the displacement structure comprising a displacement unit and a radial drive unit, the displacement unit being arranged on the track structure and moving up and down along the track structure to drive the radial drive unit to synchronously displace, the radial drive unit comprising a combination plate and a cylinder structure, a spraying structure being installed at the end of the combination plate, the cylinder structure connecting the spraying structure and driving the spraying structure to move in the combination plate to adjust the distance between the spraying structure and the inner wall of the cross joint, a linkage unit being provided between the displacement unit and the combination plate, the cylinder structure acting in the combination plate to stretch the combination plate, the combination plate in the expanded state being connected to the linkage unit, and the displacement structure acting on the combination plate through the linkage unit to drive the spraying structure located at the end of the combination plate to rotate.

[0009] As a preferred embodiment of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings according to the present invention, the track structure includes a base box, and a square support plate and a support roller are supported on the upper portion of the base box. The support roller extends through one end of the square support plate and is connected to an end plate. A clamping structure is connected to the surface of the end plate. The clamping structure clamps and adjusts the position of the cross joint so that the support roller is located at the center of the cross joint.

[0010] A support motor is also provided in the base box, and the output end of the support motor passes through the upper wall of the base box and is connected to the support roller. The support motor acts on the end plate and the clamping structure through the support roller to drive the cross joint to rotate through the clamping structure.

[0011] As a preferred embodiment of the electrostatic spraying and curing device for electromagnetic wave absorbing powder coating of the present invention, the track structure further comprises a track plate, and the displacement unit is acted upon by the end plate and rises along the track plate;

[0012] The displacement unit includes a track wheel connected to the track plate, and there are two track wheels. The two track wheels are provided with a wheel axle, and a tripod is rotated on the surface of the wheel axle. The track wheel is connected to the tripod through the wheel axle, and the track wheel is connected to the combination plate through the wheel axle and the tripod so that the combination plate is displaced synchronously with the track wheel.

[0013] As a preferred embodiment of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings of the present invention, the wheel axle comprises a front wheel axle and a rear wheel axle, the rear wheel axle is fixedly connected to the track wheel, a set of tripods are sleeved on the rear wheel axle, and a limit plate is provided at the connection between the rear wheel axle and the tripods; the front wheel axle comprises a front half axle and a rear half axle, the rear half axle is fixed to the surface of the track wheel;

[0014] The two groups of track wheels are respectively equipped with a group of built-in motors, one group of built-in motors is a permanent magnet DC motor, and the other group of built-in motors is a linear motor. The linear motor passes through the rear half wheel axle of one group of track wheels and is connected to the front half wheel axle, and the permanent magnet DC motor is fixed on the rear wheel axle of the other group of track wheels.

[0015] As a preferred embodiment of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings according to the present invention, the combined plate comprises a front plate, an intermediate plate, and a rear plate, a push rod is provided between the front plate and the intermediate plate, a connecting rod is provided between the intermediate plate and the rear plate, the cylinder structure is provided on the side of the intermediate plate, and the cylinder structure and the linear motor are connected through the intermediate plate and the linkage unit to change the gap between the front plate, the intermediate plate, and the rear plate;

[0016] A set of tripods nested with the rear wheel axle is fixedly connected to the rear end plate, and another set of tripods nested with the front half wheel axle is engaged with the bottom end of the middle plate, and a linear groove for linear movement of the tripod is provided at the bottom end of the middle plate.

[0017] As a preferred embodiment of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings according to the present invention, the front end plate is provided with a clamping guide structure, the clamping guide structure includes two groups of clamping units, a straight plate is provided between the two groups of clamping units, and the two groups of clamping units are integrally connected by the straight plate, the clamping units include a clamping plate and a displacement plate, a deflection unit is provided between the clamping plate and the displacement plate, and two groups of racks are fixed on the surface of the front end plate, and the two groups of deflection units are respectively engaged with the two groups of racks;

[0018] The deflection unit includes a driving plate, with circular gears and positioning shafts respectively embedded at both ends of the driving plate. The driving plate is fixed to the clamping plate through the positioning shaft, and the driving plate is rotated on the displacement plate through the circular gear.

[0019] As a preferred embodiment of the electrostatic spraying and curing device for electromagnetic wave absorbing powder coatings of the present invention, the linkage unit includes an axial propulsion structure, wherein a set of pulleys are provided within the axial propulsion structure, and a belt is embedded in the surface of the pulley, wherein the belt is in contact with the front half-wheel shaft, and the pulley is connected to the two sets of front half-wheel shafts via the belt, and the front half-wheel shaft drives the pulley to rotate via the belt;

[0020] The axial pushing structure includes a frame plate fixed to the surface of the tripod rod, a lifting plate is provided in the frame plate, and the pulley is rotatably installed in the lifting plate.

[0021] As a preferred solution of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings described in the present invention, one end of the push rod between the front end plate and the middle plate passes through the middle plate and is connected to the tripod rod, and the other end passes through the front end plate and is fixed to the displacement plate.

[0022] As a preferred embodiment of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings of the present invention, the end plate comprises an upper end plate and a lower end plate, the upper end plate and the lower end plate are connected by a telescopic assembly, and the support roller passes through the square support plate and is fixed to the lower end plate;

[0023] The clamping structure includes an upper clamping member and a lower support member, the upper clamping member is fixed to the upper plate of the end head, and the lower support member is fixed to the lower plate of the end head. When the telescopic assembly shrinks the distance between the upper plate of the end head and the lower plate of the end head, the lower support member moves toward the upper clamping member to drive the upper clamping member to open and close.

[0024] As a preferred solution of the electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings described in the present invention, the upper clamping member includes an upper center plate, multiple groups of upper round rollers are fixed on the upper center plate, the surface of the upper round roller is rotatably connected to an upper rotating plate, and a spherical connector is fixed to the end of the upper rotating plate away from the upper center plate, the upper rotating plate is connected to the upper support plate through the spherical connector, the lower support member abuts against the upper rotating plate to support the upper rotating plate so that the upper rotating plate rotates on the upper round roller, and the rotating upper rotating plate adjusts the position of the upper support plate to drive the upper support plate to abut against the inner wall of the cross joint.

[0025] Beneficial effects of the present invention: The present invention takes a cross joint as the spraying object, and is provided with a track structure and a displacement structure inside, wherein the displacement unit of the displacement structure can move up and down along the track structure to drive the radial drive unit to synchronously displace, and the cylinder structure is used to adjust the distance between the spray structure and the inner wall of the cross joint, and the displacement structure drives the movement of the spray structure at different positions, thereby avoiding the accumulation of paint near the inlet of the spray gun during traditional hand-held spraying, insufficient spraying in deep areas or even omissions, and ensuring that all wall surfaces inside the cross joint can be evenly covered with electromagnetic wave absorbing powder coating; at the same time, the coordinated cooperation of the track structure and the displacement structure enables the spray structure to smoothly penetrate into the complex internal channels inside the cross joint and the special structure of the cross-shaped cavity, overcoming the shortcomings of traditional hand-held spray guns due to the nozzle The displacement unit can overcome the limitations of size, shape and unstable operation that make it difficult to reach the internal space, and realize all-round and dead-angle spraying of special-structure workpieces, meet the spraying needs of special-shaped workpieces, and broaden the range of sprayable workpieces; in addition, the linkage unit is arranged between the displacement unit and the combination plate. After the cylinder structure stretches and connects the combination plate, the displacement structure can drive the spraying structure at the end of the combination plate to rotate with the help of the linkage unit, so that the spraying structure can penetrate into the complex channels and cavities inside the cross joint, realizing all-round, multi-angle and uniform spraying operations, overcoming the limitations of traditional handheld spraying equipment that are difficult to penetrate into the internal space, cannot accurately control the spraying angle and ensure spraying uniformity, effectively ensuring the electromagnetic wave absorption of various parts of special-structure workpieces such as cross joints, and improving the overall quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 Schematic diagram of the overall structure of the spraying device in the present invention;

[0028] Figure 2 Schematic diagram of the structural details of the cross joint in the present invention;

[0029] Figure 3 Schematic diagram of the structural details of the clamping structure in the present invention;

[0030] Figure 4 It is a schematic diagram of the structural details of the base box in the present invention;

[0031] Figure 5 Schematic diagram of the structural details of the end plate in the present invention;

[0032] Figure 6 Structure details of the combination plate in the present application;

[0033] Figure 7 Structure details of the displacement unit in the present application;

[0034] Figure 8 Structure details of the front axle in the present application;

[0035] Figure 9 Structure details of the displacement plate in the present application;

[0036] Figure 10 Structure details of the driving plate in the present application;

[0037] Figure 11 Structure details of the linkage unit in the present application;

[0038] Figure 12 Structure details of the axial pushing structure in the present application;

[0039] Figure 13 Structure details of the clamping structure in the present application;

[0040] Figure 14 Structure details of the upper clamping member in the present application;

[0041] Figure 15 Structure details of the clamping structure in the present application.

[0042] 1. The present invention relates to a plurality of rotating shafts, wherein the plurality of rotating shafts are connected to each other, and the plurality of rotating shafts are connected to each other. The plurality of rotating shafts are connected to each other, and the plurality of rotating shafts are connected to each other. , straight plate; 329, positioning shaft; 330, linkage unit; 331, belt; 332, pulley; 333, axial pushing structure; 3331, frame plate; 3332, elastic telescopic ring plate; 3333, lifting plate; 340, combination plate; 341, middle plate; 342, front end plate; 343, rear end plate; 344, connecting rod; 345, pushing rod; 350, cylinder structure; 400, powder feeding structure; 410, powder feeding pipe; 420, nozzle; 500, track structure; 510, base box; 520, support roller; 530, support motor; 540, square support plate; 541, square through groove; 542, support cylinder; 550, track plate; 560, end plate; 561, end upper plate; 562, end lower plate; 563, telescopic assembly. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0046] Example 1

[0047] Reference Figures 1-15FIG. 1 shows a first embodiment of the present invention, which provides an electrostatic spraying and curing device for electromagnetic wave absorbing powder coating, including a spraying device, a curing device, and a cross joint 100. The spraying device is installed on a plane and sprays the cross joint 100. The curing device is used to cure the coating on the surface of the cross joint 100. The spraying device includes a track structure 500 and a displacement structure 300 arranged in the cross joint 100. The cross joint 100 has a central cavity that is interconnected and cross-shaped. The displacement structure 300 includes a displacement unit 310 and a radial drive unit. The displacement unit 310 is arranged on the track structure 500 and moves up and down along the track structure 500. , to drive the radial drive unit to displace synchronously. The radial drive unit includes a combination plate 340 and a cylinder structure 350. A spraying structure is installed at the end of the combination plate 340. The cylinder structure 350 is connected to the spraying structure and drives the spraying structure to move in the combination plate 340 to adjust the distance between the spraying structure and the inner wall of the cross joint 100. A linkage unit 330 is provided between the displacement unit 310 and the combination plate 340. The cylinder structure 350 acts on the combination plate 340 to stretch the combination plate 340. The combination plate 340 in the expanded state is connected to the linkage unit 330. The displacement structure 300 acts on the combination plate 340 through the linkage unit 330 to drive the spraying structure located at the end of the combination plate 340 to rotate.

[0048] like Figure 3-Figure 5 As shown, the track structure 500 includes a base box 510, and a square support plate 540 and a support roller 520 are supported on the upper part of the base box 510. The support roller 520 passes through one end of the square support plate 540 and is connected to an end plate 560. The surface of the end plate 560 is connected to a clamping structure 200. The clamping structure 200 clamps and adjusts the position of the cross joint 100 so that the support roller 520 is located in the center of the cross joint 100.

[0049] Among them, such as Figure 4 、 Figure 5 、 Figure 13-15 As shown in the figure, which is the first embodiment of the present invention, the end plate 560 includes an upper end plate 561 and a lower end plate 562. The upper end plate 561 and the lower end plate 562 are connected by a telescopic component 563. The support roller 520 passes through the square support plate 540 and is fixed to the lower end plate 562.

[0050] Exemplarily, the telescopic assembly 563 includes a small spring and a stretching rod located inside the small spring, and both ends of the small spring and the stretching rod are fixed to the end upper plate 561 and the end lower plate 562 respectively.

[0051] Exemplarily, the stretching rod is configured as a non-elastic telescopic rod, and is used to guide the end upper plate 561 and the end lower plate 562 when they move relative to each other, so that the movement direction remains along the axial direction of the support roller 520.

[0052] The clamping structure 200 includes an upper clamping member 210 and a lower support member 220 . The upper clamping member 210 is disposed on the terminal upper plate 561 and linearly displaces synchronously with the terminal upper plate 561 . The lower support member 220 is disposed on the terminal lower plate 562 .

[0053] Exemplarily, the upper clamping member 210 includes an upper center plate 211, on which multiple groups of upper round rollers 212 are fixed, and the surfaces of the upper round rollers 212 are rotatably connected to the upper rotating plate 213, and a spherical connector 214 is fixed to the end of the upper rotating plate 213 facing away from the upper center plate 211, and the upper rotating plate 213 is connected to the upper support plate 215 through the spherical connector 214, and the lower support member 220 abuts against the upper rotating plate 213.

[0054] Specifically, the upper center plate 211 is a hexagonal plate, and the number of upper circular rollers 212 and upper rotating plates 213 is multiple groups, and the multiple groups of upper circular rollers 212 correspond to the six sides of the upper center plate 211, and the multiple groups of upper rotating plates 213 correspond to the multiple groups of upper circular rollers 212, and the upper rotating plates 213 rotate on the surface of the upper circular rollers 212.

[0055] Illustratively, a connection between the upper support plate 215 and the spherical connector 214 forms a ball-and-socket joint structure, and the upper support plate 215 rotates on the surface of the spherical connector 214 .

[0056] Illustratively, the lower support member 220 includes a lower center plate 221 , on which a plurality of lower round rollers 222 are fixed, and a lower fixing plate 223 is fixedly connected to the surface of the lower round rollers 222 .

[0057] Specifically, the lower center plate 221 is also set as a hexagonal plate, and the number of lower circular rollers 222 and lower fixed plates 223 is multiple groups, and the multiple groups of lower circular rollers 222 correspond to the six sides of the lower center plate 221, and the multiple groups of lower fixed plates 223 correspond to the multiple groups of lower circular rollers 222, and the lower center plate 221 is fixed on the surface of the lower circular rollers 222.

[0058] Working principle: When the telescopic component 563 is only subjected to the gravity of the end plate 561 and the upper clamping member 210, the telescopic component 563 is in a slightly compressed state, the lower fixed plate 223 abuts against the surface of the upper rotating plate 213, and the upper clamping member 210 is in a slightly open and closed state. The cross joint 100 is placed downward from the top of the track structure 500, and the cross joint 100 is moved down to the top of the upper support plate 215 slightly higher than the top of the cross joint 100. When the track structure 500 is manually pressed, the cross joint 100 is pressed downward. At the top, the pressing force is much smaller than the gravity of the cross joint 100 itself, so that the telescopic component 563 is in a more compressed state. The upper clamping member 210 is opened and closed due to the contact of the lower support member 220, and the upper support plate 215 is against the inner wall of the cross joint 100. Observe the fit between the upper support plate 215 and the cross joint 100. After the upper support plate 215 and the cross joint 100 are tightly fitted, release the pressure on the top of the track structure 500, and the position of the cross joint 100 is fixed.

[0059] Specifically, the telescopic assembly 563 begins to shrink under the force, the end upper plate 561 moves toward the end lower plate 562, the distance between the end upper plate 561 and the end lower plate 562 is reduced, and the lower fixed plate 223 applies an upward force to the upper rotating plate 213, causing the upper rotating plate 213 to rotate around the axis of the upper round roller 212, driving the upper clamping member 210 to open and close.

[0060] As the upper rotating plate 213 rotates, the position of the upper support plate 215 connected by the spherical connector 214 also changes accordingly, and the upper support plate 215 gradually approaches the inner wall of the cross joint 100 until it is tightly against the inner wall of the cross joint 100. The upper support plate 215 is connected to the upper rotating plate 213 by the spherical connector 214, so that the upper support plate 215 can be adjusted slightly so that the upper support plate 215 is completely and tightly fitted on the inner wall of the cross joint 100. At this time, the downward pressure of the track structure 500 is no longer provided. Since the gravity of the cross joint 100 is much greater than the downward pressure provided by the track structure 500, under the action of the gravity of the cross joint 100, the upper support plate 215 is tightly fitted on the inner wall of the cross joint 100. The upper support plate 215 provides the cross joint 100 with a support force away from the center and a friction force to overcome gravity, so as to firmly clamp the cross joint 100.

[0061] Example 2

[0062] Reference Figures 1-15 , which is a second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that the spraying structure includes a powder feeding structure 400, a powder feeding pipe 410 and a nozzle 420. The powder coating is transported to the nozzle 420 by the powder feeding pipe 410 and sprayed out by the nozzle 420.

[0063] For example, a support motor 530 is also provided in the base box 510. The output end of the support motor 530 passes through the upper wall of the base box 510 and is connected to the support roller 520. The support motor 530 acts on the end plate 560 and the clamping structure 200 through the support roller 520 to drive the cross joint 100 to rotate through the clamping structure 200.

[0064] Exemplarily, the track structure 500 further includes track plates 550 disposed on both sides of the square support plate 540. The two sets of track plates 550 are symmetrical with respect to the square support plate 540. A square through-slot 541 is defined in the square support plate 540. The displacement unit 310 passes through the square through-slot 541 and is moved upward along the track plates 550 by the action of the track plates 550.

[0065] like Figure 6-Figure 8 As shown, the displacement unit 310 includes a track wheel 311 connected to the track plate 550, and there are two track wheels 311. The two track wheels 311 are provided with a wheel axle 312, and a tripod 313 is rotated on the surface of the wheel axle 312. The track wheel 311 is connected to the tripod 313 through the wheel axle 312, and the track wheel 311 is connected to the combination plate 340 through the wheel axle 312 and the tripod 313 so that the combination plate 340 is displaced synchronously with the track wheel 311.

[0066] For example, Figure 4 As shown, a group of supporting cylinders 542 are installed on the surface of the square supporting plate 540. The supporting cylinders 542 are used to support the tripod 313 and limit the lowest position of the tripod 313. At the same time, the lowest position of the track wheel 311 is limited by the tripod 313.

[0067] Illustratively, a circular groove for the support roller 520 to pass through is provided on the combined plate 340 , and the combined plate 340 is guided by the support roller 520 and moves along the axis of the support roller 520 .

[0068] Exemplarily, there are two groups of tripods 313 , which are arranged on both sides of the square support plate 540 , and are respectively connected to both sides of the square through slot 541 of the combination plate 340 .

[0069] Exemplarily, the axle 312 includes a front axle 3121 and a rear axle 3122. The rear axle 3122 is fixedly connected to the track wheel 311. A set of tripods 313 are sleeved on the rear axle 3122. A limiting plate 314 is configured at the connection between the rear axle 3122 and the tripod 313. The limiting plate 314 is used to limit the position of the tripod 313 on the rear axle 3122.

[0070] The front wheel axle 3121 includes a front half wheel axle 31211 and a rear half wheel axle 31212 , and the rear half wheel axle 31212 is fixed to the surface of the track wheel 311 .

[0071] Each of the two sets of track wheels 311 is equipped with a set of built-in motors 315. The two sets of built-in motors 315 are placed opposite to each other. One set of built-in motors 315 is a permanent magnet DC motor, and the other set of built-in motors 315 is a linear motor. The linear motor passes through the rear half wheel axle 31212 on the surface of one set of track wheels 311 and is connected to the front half wheel axle 31211. The permanent magnet DC motor is fixed on the rear wheel axle 3122 on the surface of the other set of track wheels 311.

[0072] For example, since the permanent magnet DC motor has a permanent magnet inside to generate a magnetic field, the rotor of the built-in motor will generate resistance due to the magnetic field of the permanent magnet, forming a self-locking effect, that is, when the permanent magnet DC motor no longer rotates, the displacement structure 300 hovers on the track structure 500.

[0073] Exemplarily, the combined plate 340 includes a front end plate 342 , a middle plate 341 and a rear end plate 343 . A push rod 345 is provided between the front end plate 342 and the middle plate 341 , and a connecting rod 344 is provided between the middle plate 341 and the rear end plate 343 .

[0074] A set of tripods 313 nested with the rear wheel axle 3122 is fixedly connected to the rear end plate 343, and another set of tripods 313 nested with the front half wheel axle 31211 is engaged with the bottom end of the middle plate 341, and a linear groove for linear movement of the tripod 313 is provided at the bottom end of the middle plate 341.

[0075] Working principle: This device is equipped with a control system, which is equipped with information such as spraying trajectory, spraying speed, and spraying position.

[0076] The permanent magnet DC motor in the displacement unit 310 starts working. According to the preset spraying trajectory and spraying requirements, the permanent magnet DC motor works in conjunction with the rear wheel shaft 3122 to control the track wheel 311 to rise or fall along the track plate 550, thereby driving the entire displacement structure 300 to move to the specified spraying height position to ensure that the nozzle 420 can be accurately aligned with the area to be sprayed on the inner wall of the cross joint 100.

[0077] When the support motor 530 outputs power, it drives the support roller 520 to rotate. The support roller 520 passes through the square support plate 540 and connects to the end plate 560, thereby driving the end plate 560 to rotate. Furthermore, track plates 550 are provided on both sides of the square support plate 540, and the support roller 520 is installed inside the track plates 550, providing guidance for the track wheels 311 of the displacement unit 310 to move up and down.

[0078] The end plate 560 cooperates with the clamping structure 200 to clamp the cross joint 100, and the end plate 560 drives the cross joint 100 to rotate as the support roller 520 rotates, so that all surfaces of the cross joint 100 along the axial direction of the support roller 520 can face the spraying structure for spraying.

[0079] Example 3

[0080] Reference Figures 1-15 As shown in FIG. 3 , it is the third embodiment of the present invention. This embodiment is based on the above two embodiments, except that Figure 10-12 As shown, the cylinder structure 350 is arranged on the side of the middle plate 341 , and the cylinder structure 350 and the linear motor are used to change the gaps between the front plate 342 , the middle plate 341 and the rear plate 343 through the middle plate 341 and the linkage unit 330 .

[0081] The front end plate 342 is provided with a clamping guide structure 320, which includes two sets of clamping units. A straight plate 326 is provided between the two sets of clamping units, and the two sets of clamping units are integrally connected by the straight plate 326. The clamping units include a clamping plate 321 and a displacement plate 322. A deflection unit is provided between the clamping plate 321 and the displacement plate 322. Two sets of racks 324 are fixed to the surface of the front end plate 342, and the two sets of deflection units are respectively engaged with the two sets of racks 324.

[0082] The deflection unit includes a driving plate 323 , at both ends of which are respectively embedded circular gears 325 and positioning shafts 329 . The driving plate 323 is fixed to the clamping plate 321 via the positioning shafts 329 , and is rotated on the displacement plate 322 via the circular gears 325 .

[0083] Exemplarily, the positioning shaft 329 and the driving plate 323 are rotatably connected, and the circular gear 325 and the driving plate 323 are fixedly connected.

[0084] Exemplarily, the connecting rod 344 between the middle plate 341 and the rear end plate 343 is a non-elastic telescopic rod, and the connecting rod 344 is driven by an external force to achieve extension or contraction of length.

[0085] Exemplarily, one end of the push rod 345 between the front end plate 342 and the middle plate 341 passes through the middle plate 341 and is connected to the tripod rod 313 , and the other end passes through the front end plate 342 and is fixed to the displacement plate 322 .

[0086] like Figure 10-12As shown, the linkage unit 330 includes an axial pushing structure 333, in which a group of pulleys 332 are provided, and a belt 331 is nested on the surface of the pulley 332, and the belt 331 is in contact with the front half-wheel shaft 31211. The pulley 332 is connected to the two groups of front half-wheel shafts 31211 through the belt 331, and the front half-wheel shaft 31211 drives the pulley 332 to rotate through the belt 331.

[0087] Exemplarily, a limit plate 314 is fixed at the connection between the belt 331 and the front half axle 31211 , and the limit plate 314 prevents the belt 331 from falling off or shifting from the surface of the front half axle 31211 .

[0088] Exemplarily, the axial pushing structure 333 includes a frame plate 3331 fixed to the surface of the tripod rod 313 , a lifting plate 3333 is provided in the frame plate 3331 , and the pulley 332 is rotatably installed in the lifting plate 3333 .

[0089] A plurality of elastic telescopic ring plates 3332 are fixedly connected to the frame plate 3331 , and the elastic telescopic ring plates 3332 are fixed to the lifting plate 3333 . The elastic telescopic ring plates 3332 extend or contract to push the lifting plate 3333 up and down, and a rectangular long groove for the lifting plate 3333 to move is opened in the frame plate 3331 .

[0090] Exemplarily, when the cylinder structure 350 acts on the middle plate 341 through the push plate, the middle plate 341 moves toward or away from the rear end plate 343 to change the gap between the middle plate 341 and the rear end plate 343 , and the connecting rod 344 passively extends or shortens.

[0091] Exemplarily, the linear motor drives the tripod 313 sleeved on the front half wheel shaft 31211 to move away from the rear end plate 343 , and the tripod 313 pushes the displacement plate 322 to move through the push rod 345 .

[0092] Working principle: The cylinder structure 350 acts on the middle plate 341 through the push plate to drive the middle plate 341 away from the rear end plate 343. The middle plate 341 applies force to the front end plate 342 to make the front end plate 342 extend forward. The nozzle 420 extends into another channel of the cross joint 100. The tripod rod 313 connected to the front half wheel axle 31211 follows the displacement of the middle plate 341, and the distance between the middle plate 341 and the rear end plate 343 increases.

[0093] The linear motor drives the tripod 313 sleeved on the front half wheel shaft 31211, and the tripod 313 pushes the push rod 345 to move. The moving push rod 345 pushes the displacement plate 322 to move, and the displacement plate 322 drives the front end plate 342 to move away from the middle plate 341 through friction, and the gap between the front end plate 342 and the middle plate 341 increases.

[0094] When the tripod rod 313 connected to the front half wheel shaft 31211 moves, it drives the track wheel 311 to move from the bottom of the middle plate 341 toward the front end plate 342, and moves to the gap between the front end plate 342 and the middle plate 341. The elastic telescopic ring plate 3332 in the linkage unit 330 stores energy to push the lifting plate 3333 to rise, thereby pushing the pulley 332 to move upward, and the pulley 332 pushes open the gap between the front end plate 342 and the middle plate 341.

[0095] Exemplarily, the maximum gap distance between the front end plate 342 and the middle plate 341 is greater than the width of the pulley 332 .

[0096] Exemplarily, the opposite end surfaces of the front end plate 342 and the middle plate 341 are arranged in the form of arc surfaces.

[0097] When the belt 331 is tightened on the upward pulley 332 and the two sets of front half-wheel shafts 31211, the output end of the permanent magnet DC motor drives the front half-wheel shaft 31211 to rotate, and transmits it to the pulley 332 through the belt 331, the pulley 332 and the belt 331 move, and the moving pulley 332 and the belt 331 drive the push rod 345 to rotate through friction. The rotating push rod 345 drives the front end plate 342 to rotate through the displacement plate 322, and the nozzle 420 on the rotating front end plate 342 rotates, but the rotation of the nozzle 420 is reciprocating left and right rotation rather than continuous unidirectional rotation.

[0098] The end plate 560 cooperates with the clamping structure 200 to clamp the cross joint 100, and the end plate 560 drives the cross joint 100 to rotate along with the rotation of the support roller 520, so that the inner wall of the radial channel of the cross joint 100 along the support roller 520 can face the spraying structure for spraying.

[0099] When the pulley 332 pushes open the gap between the front end plate 342 and the middle plate 341, the front end plate 342 moves away from the middle plate 341, and the gap between the middle plate 341 and the front end plate 342 is squeezed by the pulley 332 and increases. The positions of the clamping plate 321 and the displacement plate 322 relative to the rear end plate 343 remain unchanged, but the clamping plate 321 moves toward the rear end plate 343 relative to the front end plate 342, and the front end plate 342 moves away from the rear end plate 343 relative to the clamping plate 321. The rack 324 on the surface of the front end plate 342 moving away from the rear end plate 343 engages with the circular gear 325 to drive the driving plate 323 to swing upward at a certain angle. The upward swinging driving plate 323 supports the clamping plate 321 to change the angle of the spraying structure so that the spraying structure can spray different surfaces of the inner wall of the cross joint 100.

[0100] Through the synergistic effect of the cylinder structure 350, the linkage unit 330 and the clamping guide structure 320 in the displacement structure 300, the present invention can spray the inner wall of the cross joint 100 at different height positions and different radial depths. Whether entering different channels of the cross joint 100 or at different positions in the same channel, the spraying structure can evenly cover the paint on the inner wall of the cross joint 100, avoiding dead corners and uneven thickness of spraying.

[0101] The present invention drives the cross joint 100 to rotate by supporting the motor 530, and at the same time the displacement unit 310 can control the displacement of the spraying structure in the up and down directions. The two cooperate with each other so that each surface of the inner wall of the cross joint 100 can pass through the spraying area in sequence and in an orderly manner, ensuring the comprehensive spraying of the entire inner wall, greatly improving the integrity and uniformity of the spraying, and being conducive to the electromagnetic wave absorbing powder coating forming a stable and uniform coating on the inner wall of the cross joint 100.

[0102] After completing the initial spraying operation on the inner wall of the entire cross joint 100, the present invention can conveniently push it into the curing treatment area for curing. Afterwards, the cured cross joint 100 can be placed back into the equipment for additional spraying, such as processing the area blocked by the clamping structure 200, so as to meet the complex spraying process requirements, adapt to different production processes and product quality standards, and improve the utilization rate of the equipment and the qualified rate of the product.

[0103] The present invention has the ability to perform spraying operations in multiple channels of the cross joint 100. Through the forward extension, retraction and angle adjustment of the displacement structure 300, the spraying channels can be flexibly switched and the spraying quality in each channel can be ensured. It can meet the needs of the cross joint 100 with a complex internal structure for electromagnetic wave absorbing powder coating spraying, broaden the application range of the equipment, and is suitable for the spraying processing of a variety of products with similar structures.

[0104] Of course, the above contents are only preferred embodiments of the present invention and should not be considered as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent of the present invention.

[0105] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0106] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0107] Finally: 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Electrostatic spraying and curing equipment for electromagnetic wave absorbing powder coatings, characterized in that: The invention comprises a spraying device and a cross joint (100), wherein the spraying device comprises a track structure (500) and a displacement structure (300) arranged in the cross joint (100), wherein the displacement structure (300) comprises a displacement unit (310) and a radial driving unit, wherein the displacement unit (310) is arranged on the track structure (500) and moves up and down along the track structure (500) to drive the radial driving unit to synchronously displace, and wherein the radial driving unit comprises a combination plate (340) and a cylinder structure (350), wherein the spraying structure is installed at the end of the combination plate (340), and the cylinder structure (350) is provided. 50) connected to the spraying structure and driving the spraying structure to move in the combined plate (340) to adjust the distance between the spraying structure and the inner wall of the cross joint (100), a linkage unit (330) is provided between the displacement unit (310) and the combined plate (340), the cylinder structure (350) acts on the combined plate (340) to stretch the combined plate (340), the combined plate (340) in the expanded state is connected to the linkage unit (330), and the displacement structure (300) acts on the combined plate (340) through the linkage unit (330) to drive the spraying structure located at the end of the combined plate (340) to rotate; The track structure (500) further includes a track plate (550), and the displacement unit (310) is acted upon by the track plate (550) and rises along the track plate (550); The displacement unit (310) includes a track wheel (311) that cooperates with the track plate (550) and is connected thereto. The number of the track wheels (311) is two, and the two track wheels (311) are provided with a wheel axle (312). A three-prong (313) is rotatably provided on the surface of the wheel axle (312). The track wheel (311) is connected to the three-prong (313) via the wheel axle (312), and the track wheel (311) is connected to the combination plate (340) via the wheel axle (312) and the three-prong (313), so that the combination plate (340) is displaced synchronously with the track wheel (311). The wheel axle (312) comprises a front wheel axle (3121) and a rear wheel axle (3122); the rear wheel axle (3122) is fixedly connected to the track wheel (311); a set of tripods (313) is sleeved on the rear wheel axle (3122); and a limiting piece (314) is arranged at the connection between the rear wheel axle (3122) and the tripod (313); the front wheel axle (3121) comprises a front half wheel axle (31211) and a rear half wheel axle (31212); the rear half wheel axle (31212) is fixed to the surface of the track wheel (311); A set of built-in motors (315) are respectively configured in the two sets of track wheels (311), one set of built-in motors (315) is a permanent magnet DC motor, and the other set of built-in motors (315) is a linear motor. The linear motors penetrate the rear half wheel axle (31212) on the surface of one set of track wheels (311) and are connected to the front half wheel axle (31211), and the permanent magnet DC motors are fixed on the rear wheel axle (3122) on the surface of the other set of track wheels (311); The linkage unit (330) includes an axial propulsion structure (333), wherein a group of pulleys (332) are provided in the axial propulsion structure (333), and a belt (331) is embedded on the surface of the pulley (332), wherein the belt (331) is in contact with the front half-wheel shaft (31211), and the pulley (332) is connected to the two groups of front half-wheel shafts (31211) via the belt (331), and the front half-wheel shaft (31211) drives the pulley (332) to rotate via the belt (331); The axial pushing structure (333) includes a frame plate (3331) fixed to the surface of the tripod (313), a lifting plate (3333) is provided in the frame plate (3331), and the pulley (332) is rotatably mounted in the lifting plate (3333).

2. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 1, characterized in that: The track structure (500) includes a base box (510), and a square support plate (540) and a support roller (520) are supported on the upper part of the base box (510); the support roller (520) passes through one end of the square support plate (540) and is connected to an end plate (560); the surface of the end plate (560) is connected to a clamping structure (200); the clamping structure (200) clamps and adjusts the position of the cross joint (100) so that the support roller (520) is located at the center of the cross joint (100); A support motor (530) is further provided in the base box (510), and an output end of the support motor (530) passes through the upper wall of the base box (510) and is connected to the support roller (520). The support motor (530) acts on the end plate (560) and the clamping structure (200) through the support roller (520), so as to drive the cross joint (100) to rotate through the clamping structure (200).

3. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 2, characterized in that: The combined plate (340) includes a front end plate (342), an intermediate plate (341), and a rear end plate (343); a push rod (345) is provided between the front end plate (342) and the intermediate plate (341); a connecting rod (344) is provided between the intermediate plate (341) and the rear end plate (343); the cylinder structure (350) is provided on a side of the intermediate plate (341); the cylinder structure (350) and the linear motor are connected to the intermediate plate (341) and the linkage unit (330) to change the gap between the front end plate (342), the intermediate plate (341), and the rear end plate (343); A set of tripods (313) nested with the rear wheel axle (3122) is fixedly connected to the rear end plate (343), and another set of tripods (313) nested with the front half wheel axle (31211) is engaged with the bottom end of the middle plate (341), and a linear groove for linear movement of the tripods (313) is provided at the bottom end of the middle plate (341).

4. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 3, characterized in that: The front end plate (342) is provided with a clamping guide structure (320), the clamping guide structure (320) includes two groups of clamping units, a straight plate (326) is provided between the two groups of clamping units, and the two groups of clamping units are connected in an integral manner through the straight plate (326), the clamping units include a clamping plate (321) and a displacement plate (322), a deflection unit is provided between the clamping plate (321) and the displacement plate (322), and two groups of racks (324) are fixed on the surface of the front end plate (342), and the two groups of deflection units are respectively engaged with the two groups of racks (324); The deflection unit comprises a driving plate (323), with circular gears (325) and positioning shafts (329) respectively embedded at both ends of the driving plate (323). The driving plate (323) is fixed to the clamping plate (321) via the positioning shaft (329), and the driving plate (323) is rotated on the displacement plate (322) via the circular gears (325).

5. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 4, characterized in that: One end of the push rod (345) between the front end plate (342) and the middle plate (341) passes through the middle plate (341) and is connected to the tripod rod (313), while the other end passes through the front end plate (342) and is fixed to the displacement plate (322).

6. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 5, characterized in that: The end plate (560) comprises an upper end plate (561) and a lower end plate (562), wherein the upper end plate (561) and the lower end plate (562) are connected via a telescopic assembly (563), and the support roller (520) passes through the square support plate (540) and is fixed to the lower end plate (562); The clamping structure (200) comprises an upper clamping member (210) and a lower support member (220), wherein the upper clamping member (210) is fixed to the upper plate (561) of the terminal, and the lower support member (220) is fixed to the lower plate (562) of the terminal. When the telescopic assembly (563) shrinks the distance between the upper plate (561) of the terminal and the lower plate (562) of the terminal, the lower support member (220) moves toward the upper clamping member (210) to drive the upper clamping member (210) to open and close.

7. The electrostatic spraying and curing device for electromagnetic wave absorbing powder coating according to claim 6, characterized in that: The upper clamping member (210) includes an upper center plate (211), and a plurality of upper round rollers (212) are fixed on the upper center plate (211). The surfaces of the upper round rollers (212) are rotatably connected to an upper rotating plate (213), and a spherical connector (214) is fixed to one end of the upper rotating plate (213) away from the upper center plate (211). The upper rotating plate (213) is connected to an upper supporting plate (215) via the spherical connector (214). The lower supporting member (220) abuts against the inner surface of the upper rotating plate (213) to support the upper rotating plate (213) so that the upper rotating plate (213) rotates on the upper round rollers (212). The rotating upper rotating plate (213) adjusts the position of the upper supporting plate (215) to drive the upper supporting plate (215) to abut against the inner wall of the cross joint (100).

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