A swing frame surface plasma spraying device

Abstract

This invention relates to a plasma spraying device for swing frame surfaces, belonging to the field of plasma spraying technology. The device includes a frame, a flipping mechanism, an adaptive mechanism, a model, a support bracket, a turning mechanism, and a control cabinet. The flipping mechanism is located on the top of the frame, fixing the swing frame with suction cup I and driven by a motor to achieve multi-angle flipping and rotation. The adaptive mechanism is located on one side of the frame, automatically adjusting the distance between the nozzle and the swing frame through the cooperation of the model and the abutment joint, and achieving horizontal and vertical adjustment of the nozzle through a screw drive. The turning mechanism is mounted on the support bracket, using suction cup II and a rotary cylinder to automatically turn the swing frame. The control cabinet enables coordinated control of all mechanisms. This invention solves the problems of unstable fixing, cumbersome angle adjustment, uneven spraying, and complex turning operations in existing devices, enabling fully automated spraying of swing frames, improving coating uniformity and production efficiency, and is suitable for batch processing of swing frames of different specifications.

Description

Technical Field

[0001] This invention belongs to the field of plasma spraying technology and relates to a plasma spraying device for the surface of a swing frame. Background Technology

[0002] As a common outdoor amusement facility and sports equipment, swing sets have metal structural components (such as columns, beams, and supports) that are exposed to the natural environment for a long time. They need to withstand various climatic conditions such as wind, sun, and rain, which can easily lead to problems such as rust and wear, seriously affecting their service life and safety. To solve this problem, the industry often uses plasma spraying technology to treat the metal surface of swing sets. This process forms a dense protective coating (such as ceramic coating or alloy coating) on ​​the surface to enhance its corrosion resistance, wear resistance, and oxidation resistance.

[0003] Currently, plasma spraying equipment used for surface treatment of swing frames has many shortcomings:

[0004] In terms of workpiece fixation, existing devices mostly use simple clamps or manual support, which are difficult to adapt to the fixation requirements of swing frames of different specifications, and the fixation stability is poor. During the spraying process, the workpiece shaking can easily lead to uneven coating thickness.

[0005] In terms of angle adjustment, the spraying angle and workpiece posture adjustment of traditional devices rely on manual operation, which is not only labor-intensive, but also makes it difficult to achieve all-round spraying of complex curved surfaces (such as pipe corners and arc-shaped connections), and is prone to spraying dead corners.

[0006] During the flipping operation, the swing frame on the painted side needs to be manually flipped over and re-fixed, which is cumbersome and poses a safety hazard. In addition, repeated disassembly and assembly can easily lead to workpiece positioning deviation and affect the connection accuracy of the coating on both sides.

[0007] Regarding nozzle distance control, the distance between the nozzle and the workpiece in existing devices is mostly a fixed value or requires manual adjustment. It cannot adaptively adjust in real time according to changes in the workpiece contour, resulting in significant differences in coating thickness at different locations and affecting the protective effect.

[0008] Therefore, we propose a plasma spraying device for the surface of a swing frame to solve the problems mentioned above. Summary of the Invention

[0009] In view of this, in order to solve the above problems, the present invention provides a plasma spraying device for the surface of a swing frame.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a plasma spraying device for a swing set surface, comprising:

[0011] frame;

[0012] A flipping mechanism, located at the top of the frame, is used to fix and drive the swing frame to flip.

[0013] The model is set on top of the frame and synchronously connected to the flipping mechanism, and its outline is consistent with the outline of the swing frame to be painted.

[0014] An adaptive mechanism is slidably mounted on one side of the frame, and a nozzle is provided on its top;

[0015] A support bracket is fixedly installed on the top of the frame;

[0016] A flipping mechanism is mounted on the support bracket;

[0017] The adaptive mechanism includes an abutment that is always in contact with the outside of the model. When the flipping mechanism drives the swing set and the model to flip, the contour change of the model drives the adaptive mechanism to move through the abutment, thereby automatically adjusting the distance between the nozzle and the surface of the swing set.

[0018] After one side is coated, the flipping mechanism is used to pick up the swing frame and flip it over so that the other side can be coated.

[0019] As a further improvement to the above technical solution:

[0020] The flipping mechanism includes a motor I, a rotating shaft I, a rotating frame, and a mounting bracket. The rotating shaft I is rotatably mounted on the top of the frame via a bearing seat. The rotating frame is fixedly connected to the outer wall of the rotating shaft I via a fixed base and a snap-fit ​​seat. The mounting bracket is located on the top of the rotating frame, and the top of the mounting bracket is provided with multiple suction cups I for adsorbing and fixing the swing frame. The motor I is fixed to one side of the frame, and its output end is fixedly connected to the rotating shaft I.

[0021] A rotating shaft II is rotatably mounted through the top of the rotating frame. The mounting bracket is fixedly mounted on the top of the rotating shaft II. An electric motor II is installed inside the rotating frame. The output end of the electric motor II is connected to the rotating shaft II to drive the mounting bracket to rotate.

[0022] The adaptive mechanism includes two slide rods, a sliding base, an adjusting rod, and a lifting bracket. The two slide rods are slidably disposed on one side of the frame. The sliding base is fixed to the top of the slide rod. The adjusting rod is slidably disposed within the two sliding bases. The lifting bracket is disposed on the top of the adjusting rod. The nozzle is fixedly disposed on the lifting bracket. A fixed bracket is fixedly disposed on the top of the adjusting rod. The abutment is fixedly disposed at the end of the fixed bracket.

[0023] The frame is equipped with a tension spring, and a limiting head is fixedly provided on one side of the frame. The two ends of the tension spring are fixedly connected to the slide rod and the limiting head respectively, so that the abutment joint always keeps in contact with the surface of the model under the tension of the tension spring.

[0024] The adaptive mechanism also includes a lead screw II, a ball nut II, and a motor V. The lead screw II is rotatably disposed between the two slide rods. The ball nut II is sleeved on the outer wall of the lead screw II and fixedly connected to the bottom of the adjusting rod. The motor V is fixed to one side of one of the slide rods, and its output end is fixedly connected to the lead screw II to drive the adjusting rod and the nozzle to move horizontally.

[0025] The lifting bracket includes a support rod, a lead screw I, a ball nut I, and a motor IV. The support rod is fixed to the top of the adjusting rod. The lead screw I is rotatably disposed inside the support rod. The ball nut I is sleeved on the outer wall of the lead screw I. The motor IV is fixed to the top of the support rod, and its output end is fixedly connected to the lead screw I. An extension rod is fixed to the outside of the ball nut I. The nozzle is fixed to the extension rod so as to drive the nozzle to rise and fall through the motor IV.

[0026] The flipping mechanism includes a mounting base, a lifting rod, a motor III, a rotary cylinder, and a suction cup II. The mounting base is fixed to the top of the support bracket. The lifting rod is slidably disposed through the mounting base. The motor III is fixed to one side of the mounting base, and its output end meshes with a rack fixed to the lifting rod via a gear to drive the lifting rod to rise and fall. The rotary cylinder is fixed to the bottom of the lifting rod, and the suction cup II is fixed to the output end of the rotary cylinder via a mounting plate.

[0027] The suction cups II are arranged in a curved shape, and their outlines are adapted to the end outlines of the swing frame.

[0028] The control cabinet is equipped with a PLC controller, which can control the rotating mechanism, adaptive mechanism and flipping mechanism to operate in coordination to achieve fully automatic spraying of the swing frame.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. The present invention discloses a plasma spraying device for a swing frame surface. By setting up a flipping mechanism, the device uses a suction cup I to adsorb and fix the swing frame, and a motor I drives a rotating shaft I to flip the rotating frame, and a motor II drives a rotating shaft II to rotate the mounting bracket. This allows for multi-angle and multi-directional posture adjustment of the swing frame. It can not only adapt to the fixing requirements of swing frames of different specifications and ensure the stability of the workpiece during the spraying process, avoiding uneven coating caused by shaking, but also replace manual operation with automated adjustment, reducing labor intensity and improving the accuracy of angle adjustment. This ensures the spraying coverage effect of complex curved surfaces (such as corners and arc-shaped connections) and reduces spraying dead angles.

[0031] 2. The plasma spraying device for a swing frame surface disclosed in this invention has an adaptive mechanism that, through the cooperation of the model and the abutment, can provide real-time feedback on contour changes and automatically adjust the distance between the nozzle and the workpiece when the swing frame is rotated by the flipping mechanism. Combined with the tension of the tension spring, it ensures that the abutment is always in contact with the model, guaranteeing the timeliness and accuracy of distance adjustment. At the same time, the transmission structure of the lead screw II and the ball nut II drives the nozzle to move left and right. The lifting bracket adjusts the nozzle height through the lead screw I and the ball nut I, so that the nozzle can move evenly along the workpiece surface, significantly improving the consistency of coating thickness, avoiding errors caused by manual adjustment, and improving the spraying quality.

[0032] 3. The plasma spraying device for the surface of a swing frame disclosed in this invention has a flipping mechanism that uses a motor III to drive a lifting rod to move up and down, and a rotary cylinder to drive a suction cup II to achieve automatic flipping of the swing frame. This eliminates the need for manual disassembly and flipping, which not only simplifies the operation process but also avoids workpiece positioning deviations caused by repeated disassembly and assembly, ensuring the connection accuracy of the coatings on both sides. The curved design of the suction cup II is adapted to the contour of the swing frame end, enhancing adsorption stability, reducing the risk of workpiece falling off during the flipping process, and improving operational safety.

[0033] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0035] Figure 1 This is a three-dimensional structural schematic diagram of a plasma spraying device for a swing frame surface according to the present invention;

[0036] Figure 2This is a schematic diagram of the flipping mechanism and frame structure of a plasma spraying device for the surface of a swing frame according to the present invention;

[0037] Figure 3 This is a schematic diagram of the flipping mechanism structure of a plasma spraying device for a swing frame surface according to the present invention;

[0038] Figure 4 This is a schematic diagram of the adaptive mechanism structure of a plasma spraying device for a swing frame surface according to the present invention;

[0039] Figure 5 This is a schematic diagram of the screw II mounting structure of a plasma spraying device for a swing frame surface according to the present invention;

[0040] Figure 6 This is a schematic diagram of the tension spring mounting structure of a plasma spraying device for a swing frame surface according to the present invention;

[0041] Figure 7 This is a schematic diagram of the flipping mechanism of a plasma spraying device for a swing frame surface according to the present invention;

[0042] Figure 8 This is a schematic diagram of the lifting support structure of a plasma spraying device for a swing frame surface according to the present invention.

[0043] Reference numerals: 1. Frame; 2. Tilting mechanism; 21. Motor I; 22. Rotating shaft I; 23. Rotating frame; 24. Mounting bracket; 25. Motor II; 26. Rotating shaft II; 27. Suction cup I; 28. Fixed base; 29. ​​Snap-fit ​​seat; 3. Support bracket; 4. Tilting mechanism; 41. Mounting base; 42. Lifting rod; 43. Motor III; 44. Rack; 45. Rotary cylinder; 46. Suction cup II; 47. Mounting plate; 5. Self-... Adaptive mechanism; 51. Slide rod; 52. Sliding base; 53. Adjusting rod; 54. Lifting bracket; 541. Support rod; 542. Lead screw I; 543. Ball nut I; 544. Extension rod; 545. Motor IV; 55. Motor V; 56. Fixed bracket; 57. Abutment joint; 58. Lead screw II; 59. Ball nut II; 591. Baffle; 592. Tension spring; 593. Limiting head; 6. Nozzle; 7. Control cabinet; 8. Model. Detailed Implementation

[0044] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0046] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] like Figure 1-8 As shown, a plasma spraying device for a swing frame includes a frame 1, which is welded from a rectangular steel structure. The bottom is fixed to the ground with expansion bolts, and the welded joints are ground to avoid sharp edges that could cause safety hazards. Reinforcing ribs are added to the joints of the overall frame to further improve operational stability. A tilting mechanism 2 is installed at the top of the frame 1. This mechanism is used to fix the swing frame and adjust its angle. The platform at the fixed position is sandblasted to increase surface friction and prevent the swing frame from slipping. On one side of the frame 1, an adaptive mechanism 5 is movable via a slide rail assembly. The slide rail surface is coated with a wear-resistant coating, and limit blocks are provided at both ends of the slide rail assembly to prevent the adaptive mechanism 5 from moving beyond its range. An adjustable-height nozzle 6 is installed on its top. The nozzle 6 is connected to the powder delivery pipe and power system of an external plasma spraying equipment. The pipe interface is sealed with a gasket. It can spray a high-temperature plasma arc carrying sprayed powder. The entire device can be equipped with an openable protective cover for safety protection.

[0048] A model 8 is mounted on top of the frame 1. The shape of model 8 matches the outline of the swing frame to be painted. It is made of lightweight alloy material with anti-corrosion treatment. It is fixed to the flipping mechanism 2 by a connector. The connector has positioning holes to ensure the precise relative position of model 8 and flipping mechanism 2, and can flip synchronously with flipping mechanism 2. The adaptive mechanism 5 works in conjunction with model 8 to automatically adjust the distance between the spray nozzle 6 and the swing frame according to the changes in the outline of model 8, ensuring the uniformity of coating thickness during the painting process.

[0049] The support bracket 3 is fixed to the top of the frame 1 with bolts. A flipping mechanism 4 is installed on the support bracket 3. After one side of the swing frame is painted, the flipping mechanism 4 can flip the swing frame to allow for painting on the other side. The control cabinet 7 is located on one side of the frame 1. Its outer shell is made of cold-rolled steel plate and coated with insulating paint. Internally, it integrates a PLC controller, relays, and a touch panel. The touch panel features a dustproof design and is connected to various electrical components in the device via wires protected by corrugated tubing, enabling automated control of the entire painting process.

[0050] The specific structure of the flipping mechanism 2 is as follows: Rotating shafts I 22 are rotatably mounted on both sides of the top of the frame 1 via bearing seats. The bearing seats are fixed to the frame 1 with bolts, and shock-absorbing pads are placed at the bottom. Both ends of the rotating shaft I 22 are fitted with bearing seats via bearings, and the bearings are filled with high-temperature grease to ensure smooth rotation. A rotating frame 23 is fixedly connected to the outer wall of the rotating shaft I 22 via a fixed base 28 and a snap-fit ​​seat 29. The fixed base 28 is welded to the rotating frame 23 and undergoes stress-relieving treatment after welding. The snap-fit ​​seat 29 is connected to the fixed base 28 with bolts. After tightening the bolts, anti-loosening adhesive is applied. The two work together to achieve synchronous rotation of the rotating frame 23 and the rotating shaft I 22. A mounting bracket 24 is provided on the top of the rotating frame 23. Multiple suction cups I 27 are evenly distributed on the top of the mounting bracket 24. Each suction cup I 27 has an elastic sealing ring on its edge and is connected to a vacuum pump via an air pipe. A valve is installed on the air pipe to individually control the negative pressure of each suction cup. During operation, this generates negative pressure to firmly adhere and fix the bottom of the swing frame. On one side of the frame 1, the motor I 21 is fixedly mounted via a motor mount. A rubber pad is placed between the motor mount and the frame 1 to reduce vibration. Its output shaft is fixedly connected to one end of the rotating shaft I 22 via a coupling. The coupling is an elastic coupling to compensate for installation errors. Starting the motor I 21 drives the rotating shaft I 22 to rotate, thereby driving the rotating frame 23 and the swing frame to rotate together, achieving different spraying angles.

[0051] A rotating shaft II 26 is rotatably mounted on the top of the rotating frame 23, penetrating its surface. A bearing is installed at the contact point between the rotating shaft II 26 and the rotating frame 23. The outer ring of the bearing is interference-fitted with the rotating frame 23, while the inner ring is transition-fitted with the rotating shaft II 26. A mounting bracket 24 is bolted to the top of the rotating shaft II 26. An electric motor II 25 is bolted inside the rotating frame 23. The output end of the electric motor II 25 is connected to the rotating shaft II 26 via a gear set. The gear meshing points of the gear set are coated with grease, and a protective cover is provided on the outside. When the electric motor II 25 starts, it drives the rotating shaft II 26 to rotate, thereby driving the mounting bracket 24 and the swing frame to rotate together. This facilitates adjustment of the spraying position of the swing frame, allowing the spray nozzle 6 to spray different sides of the swing frame.

[0052] The adaptive mechanism 5 includes two slide rods 51. Each slide rod 51 engages with a slide rail on one side of the frame 1 via a slider at its bottom. Rolling bearings are installed inside the sliders to reduce sliding friction and allow movement along the width of the frame 1. A sliding base 52 is welded to the top of each slide rod 51, with the weld surface ground smooth. A through-groove is formed inside each of the two sliding bases 52, and the inner wall of the groove is polished. Both ends of the same adjusting rod 53 are inserted into the two grooves, allowing it to slide along the length of the groove. A lifting bracket 54 is mounted on the top of the adjusting rod 53. The nozzle 6 is fixed to the lifting bracket 54 by a clamp, with a rubber pad inside the clamp to prevent scratching the nozzle 6. A fixed bracket 56 is welded to the top of the adjusting rod 53. An abutment 57, made of wear-resistant rubber, is bolted to the other end of the fixed bracket 56 and its spherical end abuts against the outer side of the model 8. When the flipping mechanism 2 flips, the model 8 flips synchronously. The abutment 57, under the action of the contour of the model 8, pushes the fixed bracket 56, thereby driving the adjusting rod 53 to move within the sliding base 52, realizing the automatic adjustment of the distance between the spray nozzle 6 and the swing frame. On one side of one of the sliding rods 51, the electric motor V 55 is fixedly installed through the motor mount, and its output end is connected to the transmission assembly to drive the adjusting rod 53 to move, thereby driving the spray nozzle 6 to move left and right to complete the spraying of different positions on the swing frame.

[0053] A tension spring 592 is installed inside the frame 1 near the slide rod 51. The surface of the tension spring 592 is galvanized to prevent rust. A limit head 593 is bolted to one side of the frame 1. The limit head 593 is made of alloy material with a smooth surface. One end of the tension spring 592 is hooked onto the hook of the slide rod 51, and the other end is connected to the hook of the limit head 593. The hook is rounded to prevent wear on the tension spring 592. Under the tension of the tension spring 592, the slide rod 51 always tends to move towards the model 8, thereby ensuring that the abutment 57 is always in close contact with the surface of the model 8, ensuring the accuracy of distance adjustment.

[0054] A lead screw II 58 is rotatably mounted between two sliding rods 51 via a bearing housing. The bearing housing is fixed to the sliding rod 51. A helical groove is formed on the outer wall of the lead screw II 58, and the groove is precision-machined by grinding. A ball nut II 59 is fitted onto the outside of the lead screw II 58, with balls embedded in the helical groove of the lead screw II 58, forming a helical transmission fit. The balls are made of high-strength alloy. The ball nut II 59 is fixed to the bottom of the adjusting rod 53 by bolts, which are hexagonal socket head cap screws for easy installation and disassembly. The output end of the motor V 55 is fixedly connected to one end of the lead screw II 58 via a coupling. When the motor V 55 starts, it drives the lead screw II 58 to rotate. Under the action of the helical transmission, the ball nut II 59 moves axially along the lead screw II 58, thereby causing the adjusting rod 53 to slide within the sliding base 52. Two baffles 591 are also fixed between the two slide rods 51 by bolts. The baffles 591 are made of thin steel plate and have been powder coated. The two baffles 591 are located on both sides of the lead screw II 58 and cooperate with the adjusting rod 53 to form a closed chamber, which encloses the lead screw II 58 and the ball nut II 59, and plays a role in dust prevention and protection, preventing the powder generated during the spraying process from entering the transmission components and affecting the running accuracy.

[0055] The lifting bracket 54 includes a support rod 541, which is bolted to the top of the adjusting rod 53. The bolts are evenly distributed to ensure uniform force distribution. An internal cavity with a smooth inner wall is provided. The lead screw I 542 is rotatably mounted in this cavity via bearings. High-precision bearings are selected to ensure transmission accuracy. A motor IV 545 is fixedly mounted on the top of the support rod 541 via a motor mount. The motor mount and the support rod 541 are positioned by a locating pin. The output shaft of the motor IV 545 is fixedly connected to the top of the lead screw I 542 via a coupling. A ball nut I 543 is fitted onto the outer wall of the lead screw I 542. The balls on the inner wall of the ball nut I 543 are embedded in a spiral groove on the outer wall of the lead screw I 542. An extension rod 544 is bolted to its outer end. The extension rod 544 extends outward through a long slot in the side wall of the support rod 541. The edge of the long slot is polished. The nozzle 6 is bolted to the end of the extension rod 544. When motor IV545 starts, it drives lead screw I542 to rotate, and ball nut I543 moves axially along lead screw I542. Through extension rod 544, it drives nozzle 6 to move up and down, thereby adjusting the height of nozzle 6 to meet the painting needs of swing frames of different specifications.

[0056] The flipping mechanism 4 includes a mounting base 41, which is bolted to the top of the support bracket 3. The bolts are high-strength bolts, and a through guide hole is provided at the top of the mounting base 41. A bronze bushing is placed inside the guide hole, through which the lifting rod 42 passes and slides. The bronze bushing has self-lubricating properties, reducing wear on the lifting rod 42 during sliding. A motor III 43 is bolted to one side of the mounting base 41. A gear is mounted on the output shaft of the motor III 43. The gear is hardened to enhance its wear resistance. A rack 44 is welded to the same side of the lifting rod 42. The teeth of the rack 44 are ground. The gear and rack 44 mesh with each other, and a protective cover is provided at the meshing point to prevent foreign objects from entering. When the motor III 43 starts, the gear rotates, causing the rack 44 to move up and down, which in turn drives the lifting rod 42 to slide up and down along the guide hole of the mounting base 41. A rotary cylinder 45 is bolted to the bottom of the lifting rod 42. A pressure regulating valve is installed at the air inlet of the rotary cylinder 45 to adjust the air pressure. The output end of the rotary cylinder 45 is fixedly connected to a mounting plate 47 via a flange. A sealing gasket is placed between the flanges. Multiple suction cups II 46 are evenly distributed on the bottom of the mounting plate 47. The suction cups II 46 are connected to a vacuum pump via air pipes, and a pressure gauge is installed on the air pipes for easy observation of the negative pressure. When the swing frame needs to be flipped, the lifting rod 42 descends to make the suction cups II 46 contact and adhere to the swing frame. Then, the rotary cylinder 45 drives the mounting plate 47 to rotate 180 degrees, flipping the swing frame. Afterward, the lifting rod 42 rises to place the swing frame back onto the flipping mechanism 2, completing the flipping operation.

[0057] Multiple suction cups II46 are arranged in a curved shape, and their curvature matches the contour of the swing frame end. The edges of the suction cups are thin and elastic, which can increase the contact area with the swing frame, improve the stability of the adsorption, prevent the swing frame from falling off or shifting during the flipping process, and ensure the continuity and safety of the spraying operation.

[0058] Both lead screw I 542 and lead screw II 58 are equipped with bellows guards.

[0059] Equipment startup and preparation: The swing frame to be sprayed is placed on the mounting bracket 24 of the flipping mechanism 2 by the robotic arm. The vacuum pump is started by the control cabinet 7 to generate negative pressure on the suction cup I 27 and make it stick tightly to the bottom of the swing frame to fix the workpiece. At the same time, the control cabinet 7 initializes each motor and sensor to ensure that the flipping mechanism 2, support bracket 3 and adaptive mechanism 5 on the frame 1 are in the initial position.

[0060] Plasma spraying operation: The external plasma equipment is started, and nozzle 6 sprays a high-temperature plasma arc carrying spray powder. Simultaneously, motor V 55 is started, driving lead screw II 58 to rotate. Ball nut II 59 drives adjusting rod 53 to move horizontally along sliding base 52 (the cavity formed by the two baffles 591 and adjusting rod 53 prevents powder from entering lead screw II 58), causing nozzle 6 to move at a uniform speed along the length of the swing frame. At the same time, the lifting bracket 54 is adjusted via control cabinet 7, and motor IV 545 is started, driving lead screw I 542 to rotate. Ball nut I 543 moves along lead screw I 542 and drives nozzle 6 up and down via extension rod 544 until nozzle 6 reaches the preset height, completing the uniform spraying of one side.

[0061] Workpiece position adjustment: According to the spraying requirements, the motor I21 is controlled by the control cabinet 7 to rotate, and the rotating shaft I22 is driven to rotate via the coupling. The rotating shaft I22 drives the rotating frame 23 to flip through the fixed base 28 and the snap-fit ​​seat 29 to adjust the tilt angle of the swing frame; the motor II25 is started, and the rotating shaft II26 drives the mounting bracket 24 to rotate through the gear set transmission to realize the circumferential position adjustment of the swing frame until the surface to be sprayed is directly facing the spray head 6.

[0062] Adaptive mechanism in place: Model 8 flips synchronously with the flipping mechanism 2. Under the tension of the tension spring 592 (the two ends of the tension spring 592 are connected to the slide rod 51 and the limiting head 593 respectively), the abutment 57 of the adaptive mechanism 5 is always in close contact with the surface of model 8. The lifting bracket 54 is adjusted by the control cabinet 7, and the motor IV 545 is started to drive the lead screw I 542 to rotate. The ball nut I 543 moves along the lead screw I 542 and drives the nozzle 6 to move up and down through the extension rod 544 until the nozzle 6 reaches the preset height. At the same time, the motor V 55 is started to drive the lead screw II 58 to rotate. The ball nut II 59 drives the adjusting rod 53 to move horizontally along the sliding base 52 (the cavity formed by the two baffles 591 and the adjusting rod 53 prevents powder from entering the lead screw II 58), so that the nozzle 6 moves at a constant speed along the length of the swing frame.

[0063] Workpiece flipping operation: After one side is sprayed, the spray head 6 stops working and resets; the control cabinet 7 starts the flipping mechanism 4, the motor III 43 runs, its output shaft gear meshes with the rack 44, driving the lifting rod 42 to descend along the guide hole of the mounting base 41 at the top of the support bracket 3, so that the suction cup II 46 contacts the end of the swing frame, and then controls the suction cup II 46 to reset upward to a safe height; the vacuum pump is started to make the suction cup II 46 adsorb the workpiece, the rotary cylinder 45 drives the mounting plate 47 to rotate 180 degrees to complete the flipping, then the lifting rod 42 descends and puts the swing frame back into the mounting bracket 24, and the suction cup I 27 fixes the workpiece again.

[0064] Spraying the other side: Repeat the above steps, adjust the angle of the swing frame after flipping by the flipping mechanism 2, and the abutment 57 of the adaptive mechanism 5 refits with the model 8. The nozzle 6 completes the spraying of the other side according to the same process. During this period, the screw drive of the lead screw II 58 and the ball nut II 59 ensures that the nozzle moves smoothly. The lifting bracket 54 can adjust the height of the nozzle 6 again as needed.

[0065] Work completion and finishing: After the spraying is completed, the spray nozzle 6 stops working and returns to the initial position, the vacuum pump is turned off, and the suction cups I 27 and II 46 release pressure; the control cabinet 7 controls each motor to reverse, so that the flipping mechanism 2, the adaptive mechanism 5, and the flipping mechanism 4 return to the initial state, the robot arm removes the sprayed swing frame from the mounting bracket 24, the power of the control cabinet 7 is turned off, and the entire work process is completed.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A plasma spraying device for the surface of a swing set, characterized in that, include: Rack (1); A flipping mechanism (2) is provided on the top of the frame (1) for fixing and driving the swing frame to flip; Model (8) is set on the top of the frame (1) and synchronously connected to the flipping mechanism (2), and its outline is consistent with the outline of the swing frame to be painted; An adaptive mechanism (5) is slidably disposed on one side of the frame (1), and a nozzle (6) is provided on its top. A support bracket (3) is fixedly installed on the top of the frame (1); A flipping mechanism (4) is mounted on the support bracket (3); The adaptive mechanism (5) includes an abutment (57) that is always in contact with the outside of the model (8). When the flipping mechanism (2) flips the swing and the model (8), the contour change of the model (8) drives the adaptive mechanism (5) to move through the abutment (57), thereby automatically adjusting the distance between the nozzle (6) and the surface of the swing. After one side is coated, the flipping mechanism (4) is used to pick up the swing frame and flip it over so that the other side can be coated. The flipping mechanism (2) includes a motor I (21), a rotating shaft I (22), a rotating frame (23), and a mounting bracket (24). The rotating shaft I (22) is rotatably mounted on the top of the frame (1) via a bearing seat. The rotating frame (23) is fixedly connected to the outer wall of the rotating shaft I (22) via a fixed base (28) and a snap-fit ​​seat (29). The mounting bracket (24) is located on the top of the rotating frame (23), and the top of the mounting bracket (24) is provided with multiple attachments for attaching and fixing the swing. The suction cup I (27) of the frame is fixed to one side of the frame (1), and its output end is fixedly connected to the rotating shaft I (22); the adaptive mechanism (5) includes two slide rods (51), a sliding base (52), an adjusting rod (53) and a lifting bracket (54). The two slide rods (51) are slidably disposed on one side of the frame (1), the sliding base (52) is fixed to the top of the slide rods (51), and the adjusting rod (53) is slidably disposed on the two sliding bases (52). Inside, the lifting bracket (54) is set on the top of the adjusting rod (53), the nozzle (6) is fixedly set on the lifting bracket (54), the top of the adjusting rod (53) is fixedly provided with a fixed bracket (56), and the abutment (57) is fixedly set at the end of the fixed bracket (56); the flipping mechanism (4) includes a mounting base (41), a lifting rod (42), a motor III (43), a rotary cylinder (45), and a suction cup II (46), the mounting base (41) is fixed to the top of the adjusting rod (53). The lifting rod (42) is slidably disposed on the mounting base (41) at the top of the support bracket (3). The motor III (43) is fixed to one side of the mounting base (41), and its output end meshes with the rack (44) fixed on the lifting rod (42) through a gear to drive the lifting rod (42) to rise and fall. The rotary cylinder (45) is fixed to the bottom of the lifting rod (42), and the suction cup II (46) is fixed to the output end of the rotary cylinder (45) through a mounting plate (47).

2. The plasma spraying device for the surface of a swing frame according to claim 1, characterized in that, The top of the rotating frame (23) is provided with a rotating shaft II (26) that rotates through it. The mounting bracket (24) is fixedly installed at the top of the rotating shaft II (26). The rotating frame (23) is provided with a motor II (25). The output end of the motor II (25) is connected to the rotating shaft II (26) to drive the mounting bracket (24) to rotate.

3. The plasma spraying device for the surface of a swing frame according to claim 2, characterized in that, The frame (1) is provided with a tension spring (592), and a limiting head (593) is fixedly provided on one side of the frame (1). The two ends of the tension spring (592) are fixedly connected to the slide rod (51) and the limiting head (593) respectively, so that the abutment (57) always keeps in contact with the surface of the model (8) under the tension of the tension spring (592).

4. The plasma spraying device for the surface of a swing frame according to claim 3, characterized in that, The adaptive mechanism (5) further includes a lead screw II (58), a ball nut II (59), and a motor V (55). The lead screw II (58) is rotatably disposed between the two slide rods (51). The ball nut II (59) is sleeved on the outer wall of the lead screw II (58) and fixedly connected to the bottom of the adjusting rod (53). The motor V (55) is fixed to one side of one of the slide rods (51), and its output end is fixedly connected to the lead screw II (58) to drive the adjusting rod (53) and the nozzle (6) to move horizontally.

5. The plasma spraying device for the surface of a swing frame according to claim 4, characterized in that, The lifting bracket (54) includes a support rod (541), a lead screw I (542), a ball nut I (543), and a motor IV (545). The support rod (541) is fixed to the top of the adjusting rod (53). The lead screw I (542) is rotatably disposed inside the support rod (541). The ball nut I (543) is sleeved on the outer wall of the lead screw I (542). The motor IV (545) is fixed to the top of the support rod (541), and its output end is fixedly connected to the lead screw I (542). An extension rod (544) is fixedly provided on the outer side of the ball nut I (543). The nozzle (6) is fixed on the extension rod (544) so ​​as to drive the nozzle (6) to rise and fall through the motor IV (545).

6. The plasma spraying device for the surface of a swing frame according to claim 5, characterized in that, Multiple suction cups II (46) are arranged in a curved shape, and their outlines are adapted to the end outlines of the swing frame.

7. The plasma spraying device for the surface of a swing set according to claim 6, characterized in that, It also includes a control cabinet (7), which is equipped with a PLC controller that can control the rotating mechanism (2), the adaptive mechanism (5), and the flipping mechanism (4) to work together to achieve fully automatic spraying of the swing frame.

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