Multi-station collaborative generator set soundproof box fully automatic powder coating production line

Abstract

This invention relates to a fully automated powder coating production line for multi-station collaborative generator set soundproof enclosures, encompassing the field of powder coating technology for soundproof enclosure panels. It includes an integrated base with a horizontally open powder coating box fixed above it. Inside the box are sequentially arranged pretreatment, multi-degree-of-freedom spraying, and curing / cooling units, connected by a closed-loop conveyor system. The closed-loop conveyor system consists of horizontal and arc-shaped guide rails, equipped with lifting and conveying components and steering drive components adaptable to various workpiece specifications. The pretreatment unit performs spray degreasing and convection drying; the spraying unit includes multi-degree-of-freedom spray guns; and the curing / cooling unit achieves constant-temperature curing and directional air cooling. This invention enables multi-station collaborative continuous production, improving powder coating efficiency and coating quality, adapting to large-scale standardized processing, and solving the pain points of existing equipment such as poor connection, inconvenient clamping, and uneven spraying.

Description

Technical Field

[0001] This invention relates to the field of powder coating technology for soundproof enclosure panels, specifically to a fully automated powder coating production line for soundproof enclosures of multi-station collaborative generator sets. Background Technology

[0002] Generator sets are widely used in factory backup power supply, outdoor projects, and industrial park power supply. Operating in complex outdoor environments for extended periods, they require stringent requirements for the corrosion resistance, aging resistance, and anti-corrosion properties of their accompanying soundproof enclosures. Powder coating is a key processing technique for enhancing the surface protection of the metal sheets in the soundproof enclosure and extending the equipment's lifespan.

[0003] Currently, the powder coating process for generator set soundproof enclosures mostly adopts a segmented, single-machine operation mode. The equipment for pretreatment, spraying, curing, and cooling processes is independent, resulting in a scattered layout, low equipment integration, and a large footprint. Traditional production lines use simple conveying methods, often employing linear, unidirectional conveying structures. Workpieces cannot be continuously circulated, and there are gaps between workstations, making it difficult to achieve synchronous and collaborative production across multiple workstations. Furthermore, production efficiency cannot meet the industry's mass production needs during large-scale processing.

[0004] Meanwhile, the tooling used in existing powder coating production lines has poor versatility, and the clamping structure cannot adapt to the fixing requirements of soundproof box panels of different sizes. During processing, the workpiece is prone to displacement and shaking, making it difficult to control the processing accuracy. At the process level, most production processes simplify the pretreatment of the substrate, resulting in inadequate cleaning of surface oil and impurities, and incomplete drying of moisture. This directly leads to poor adhesion of the powder coating, making it prone to peeling and corrosion during later use.

[0005] The spraying process typically uses fixed spray guns, resulting in limited adjustment flexibility. This makes it difficult to fully cover special areas such as irregularly shaped edges and internal cavities of the soundproof enclosure, leading to frequent issues like missed areas and powder accumulation, and poor product coating quality stability. Insufficient temperature control uniformity during curing results in poor coating formation, and the reliance on natural cooling leads to long production cycles, severely restricting production pace. Furthermore, conventional equipment cannot adjust the workpiece's posture at critical workstations, and the single-sided processing mode cannot meet the requirements of all-around protective powder coating. Overall processing quality is inconsistent, making it unsuitable for the current development needs of high-quality, large-scale, and automated powder coating production for generator set soundproof enclosures.

[0006] Therefore, there is an urgent need to design a fully automated powder coating production line for multi-station collaborative generator set soundproof boxes, integrating the entire process of pretreatment, flexible spraying, curing and cooling, optimizing the conveying structure, clamping structure and process layout, and solving the actual production pain points in the existing technology such as low production efficiency, poor clamping versatility, substandard pretreatment, uneven spraying, low curing and cooling efficiency, and inability to process workpieces in all directions, so as to realize integrated, automated, high-quality continuous powder coating processing of soundproof box panels. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a fully automated powder coating production line for multi-station collaborative generator set soundproof enclosures. This line solves problems such as low integration, poor station connection, inability to continuously coordinate production, poor workpiece clamping adaptability, inaccurate positioning and easy deviation, incomplete pretreatment leading to poor coating adhesion, low spraying freedom and insufficient uniformity, low curing and cooling efficiency restricting production capacity, and inability to rotate and adjust workpieces, resulting in incomplete processing.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A fully automated powder coating production line for the soundproof enclosure of multi-station collaborative generator sets, including an integrated base.

[0009] As an optimized solution, a powder coating box is fixed on the upper surface of the integrated base. The powder coating box is provided with a pretreatment unit, a multi-degree-of-freedom spraying unit and a curing and cooling unit from left to right. A closed-loop conveying system is provided between the pretreatment unit, the multi-degree-of-freedom spraying unit and the curing and cooling unit.

[0010] As an optimized solution, the multi-degree-of-freedom spraying unit includes a support platform, which is located on one longitudinal side of the integrated base and grounded at its lower end. An electrical cabinet is fixed on the upper surface of the support platform, and the back of the electrical cabinet is attached to the longitudinal outer wall of the powder coating box.

[0011] As an optimized solution, the upper part of the electrical cabinet is provided with a square mounting opening. Each horizontal inner wall of the square mounting opening is fixed with a vertically extending electric guide rail, and an electric lifting slide is slidably engaged between the two electric guide rails.

[0012] As an optimized solution, the longitudinal sidewall of the powder coating box is provided with a guide groove that communicates with the square mounting opening, and the guide groove extends vertically.

[0013] As an optimized solution, a rotary drive motor is fixed on the longitudinal outer wall of the electric lifting slide. The output shaft of the rotary drive motor passes through the electric lifting slide and the guide slot in sequence and extends into the powder coating box. A spraying turntable is fixed at the end of the output shaft of the rotary drive motor. The spraying turntable is set close to the longitudinal inner wall of the powder coating box.

[0014] As an optimized solution, a set of three-section spraying extension arms is hinged to each of the two sides of the spraying turntable. Each section of the three-section spraying extension arm is equipped with an independent drive motor to achieve independent swinging. A high-voltage electrostatic spray gun is fixed at the end of the three-section spraying extension arm.

[0015] As an optimized solution, the integrated base is a horizontally set, laterally extended square base, and four grounded support legs are fixed at the four corners of the lower surface of the integrated base.

[0016] As an optimized solution, the powder-coated box is a square box with openings on both sides laterally.

[0017] As an optimized solution, the closed-loop conveying system includes two longitudinally symmetrical transverse conveying guides and two transversely symmetrical arc-shaped conveying guides. One of the transverse conveying guides is located directly above the integrated base and fixed to the inner top surface of the powder coating box. The other transverse conveying guide is located on one longitudinal side of the powder coating box. The two transverse conveying guides and the two arc-shaped conveying guides are alternately connected end to end to form an ellipse. The cross-section of the transverse conveying guide and the two arc-shaped conveying guides is a C-shape with the opening facing downwards.

[0018] As an optimized solution, two symmetrical triangular support frames are provided on the horizontal sides of the powder coating box. The lower end of the triangular support frame is grounded, and the upper end of the triangular support frame is fixedly connected to the inner circumferential wall of the horizontal conveying guide rail and the arc-shaped conveying guide rail, respectively.

[0019] As an optimized solution, each of the transverse conveying guide rails is provided with a conveying drive assembly. The conveying drive assembly includes four symmetrical conveying support rollers in pairs. The upper and lower ends of the conveying support rollers are rotatably mounted on the inner top and inner bottom surfaces of the transverse conveying guide rail, respectively. A rotating drive seat is fixed on the upper surface of the transverse conveying guide rail, and the rotating drive seat is connected to the two conveying support rollers on the same side for transmission.

[0020] As an optimized solution, a circulating conveyor belt is sleeved between two transversely opposite conveyor support rollers, and several equally spaced conveyor push plates are fixed on the outer peripheral wall of each circulating conveyor belt.

[0021] As an optimized solution, each of the aforementioned arc-shaped conveying guide rails is also equipped with a conveying drive assembly with the same structure.

[0022] As an optimized solution, the closed-loop conveying system further includes a hoisting conveying assembly, which includes a hoisting conveying base. The hoisting conveying base is a square base with rounded corners on its four vertical edges.

[0023] As an optimized solution, the hoisting conveyor is slidably mounted in the transverse conveying guide rail and its lower surface slides close to the inner bottom surface of the transverse conveying guide rail. Each longitudinal outer wall of the hoisting conveyor is provided with a limiting groove, and the ends of the two longitudinally opposite conveying push plates extend into the limiting groove.

[0024] As an optimized solution, a rotatable top seat is rotatably mounted in the middle of the hoisting and conveying seat, and a laterally extending mounting groove is provided in the middle of the upper surface of the rotatable top seat.

[0025] As an optimized solution, a horizontally extending hoisting plate is fixed to the lower surface of the steering top seat, and two horizontally symmetrical connecting vertical plates are fixed to both sides of the lower surface of the hoisting plate. An extension cylinder is fixed to the horizontal outer wall of each connecting vertical plate, and a vertically extending clamping side plate is fixed to the extension end of each extension cylinder.

[0026] As an optimized solution, each clamping side plate has a clamping turntable rotatably mounted on the transverse inner wall near the lower end. A horizontal clamping telescopic cylinder is fixed on the inner side wall of the clamping turntable. A telescopic clamping seat is fixed at the telescopic end of the clamping telescopic cylinder. A cross positioning groove is opened on the side end face of the telescopic clamping seat.

[0027] As an optimized solution, a drive motor is fixed on the transverse inner wall near the upper end of each clamping side plate, and a drive box is fixed on the transverse outer wall of each clamping side plate. The drive box is provided with a drive mechanism that connects the clamping turntable and the drive motor.

[0028] As an optimized solution, the hoisting and conveying assembly is configured in multiple groups, with the groups arranged at intervals.

[0029] As an optimized solution, the closed-loop conveying system also includes a steering drive assembly, which includes three motor mounting brackets. The motor mounting brackets are U-shaped brackets with their openings facing downwards. The three motor mounting brackets are fixed at equal intervals along the transverse direction on the upper surface of the powder coating box and are respectively arranged corresponding to the pretreatment unit, the multi-degree-of-freedom spraying unit, and the curing and cooling unit.

[0030] As an optimized solution, a steering drive motor is fixed at the center of the upper surface of each motor mounting bracket. The output shaft end of the steering drive motor passes downward through the motor mounting bracket and is fixed with a connecting steering wheel. The connecting steering wheel is set close to the inner top surface of the motor mounting bracket.

[0031] As an optimized solution, the upper surface of the powder coating box is provided with three telescopic clearance openings corresponding to the three connecting steering wheels. Each telescopic clearance opening is provided with a vertical positioning telescopic cylinder. The upper fixed end of the positioning telescopic cylinder is fixed at the center of the lower surface of the connecting steering wheel, and the lower telescopic end of the positioning telescopic cylinder is fixed with a positioning vertical plate that matches the mounting groove.

[0032] As an optimized solution, the pretreatment unit is located on the inner transverse side of the powder coating box and includes a spray degreasing assembly. The spray degreasing assembly includes two longitudinally symmetrical suspended spray boxes. The upper ends of the two suspended spray boxes are fixed to the inner top surface of the powder coating box and are respectively located on both sides of the transverse conveying guide rail.

[0033] As an optimized solution, the suspended spray box is a J-shaped box, and several water washing spray heads are fixed horizontally on the lower inclined surface of each suspended spray box.

[0034] As an optimized solution, two longitudinally symmetrical spray water storage tanks are fixed on the upper surface of the powder coating box. The spray water storage tanks are connected to the suspended spray box, and each spray water storage tank is fixed with a booster water supply pump.

[0035] As an optimized solution, a water collection trough is provided on the upper surface of the integrated base, and the water collection trough is located directly below the two suspended spray boxes. A drain outlet connected to the water collection trough is provided on the longitudinal side wall of the integrated base.

[0036] As an optimized solution, two splash guards are provided on the horizontal sides of the water collection tank. The lower end of the splash guard is fixed to the upper surface of the integrated base, and the two longitudinal ends of the splash guard are fixed to the longitudinal inner wall of the powder coating box.

[0037] As an optimized solution, the pretreatment unit further includes a convection drying assembly, which includes two convection drying fans. The two convection drying fans are located on both sides of the spray degreasing assembly and fixed on the longitudinal sidewall of the spray coating box. Each convection drying fan has several electric heating tubes fixed inside it.

[0038] As an optimized solution, a paint distribution box is fixed in the middle of the side end face of the spraying turntable, and two feed hoses are connected to the outer walls of the paint distribution box on both sides. The ends of the feed hoses are fixedly connected to the high-pressure electrostatic spray gun.

[0039] As an optimized solution, a paint transfer box is fixed to one longitudinal side of the upper surface of the powder coating box, and a spring feed pipe is fixedly connected to the lower end of the paint transfer box. The lower end of the spring feed pipe is rotatably installed at the center of the longitudinal outer wall of the paint distribution box.

[0040] As an optimized solution, a booster pump is fixed to one side of the upper surface of the support platform. The booster pump is externally connected to a feeding pipe, and the end of the feeding pipe is fixedly connected to the paint transfer box.

[0041] As an optimized solution, a control panel is fixed to the lower half of the front of the electrical cabinet.

[0042] As an optimized solution, a glass cover is provided on the outside of the square mounting opening, and the glass cover is fixed to the upper half of the front of the electrical cabinet.

[0043] As an optimized solution, an observation port is provided on the longitudinal side wall of the middle section of the powder coating box. The observation port is located on the opposite side of the electrical cabinet. A glass window is fixed inside the observation port, through which the powder coating status of the soundproof box panel can be observed in real time.

[0044] As an optimized solution, the curing and cooling unit is located on the other side of the interior of the powder coating box, and includes two longitudinally symmetrical mounting bases, which are respectively fixed on the longitudinal inner walls on both sides of the powder coating box.

[0045] As an optimized solution, each of the mounting bases has an electric heating base fixed on the longitudinal inner wall of the side near the multi-degree-of-freedom spraying unit, and a curing heating coil is fixed on the side end face of the electric heating base.

[0046] As an optimized solution, a power supply box connected to and powered by the heating base is fixed on the longitudinal outer wall of the powder coating box.

[0047] As an optimized solution, each mounting base has two symmetrical cooling air guide plates fixed on the longitudinal outer wall near the opening end of the powder coating box. The mounting base has an air outlet located between the two cooling air guide plates.

[0048] As an optimized solution, a cooling air pump connected to the mounting base is also fixed on the longitudinal outer wall of the powder coating box.

[0049] Compared with the prior art, the beneficial effects of the present invention are: 1. Integrated layout enables multi-station collaborative continuous production. This equipment adopts an integrated base and enclosed powder coating box structure, which is stable and compact. Relying on the closed-loop conveying circuit composed of horizontal and arc-shaped conveying rails, and with multiple sets of flexibly configurable hoisting and conveying components, it realizes the uninterrupted circulation of generator set soundproof box panels, and the synchronous and coordinated operation of each processing station, effectively shortening the process interval, greatly improving the efficiency of batch powder coating of workpieces, and meeting the needs of large-scale standardized continuous production.

[0050] 2. Adaptive precision clamping structure ensures workpiece stability throughout the machining process. The hoisting and conveying components in the closed-loop conveying system form an adjustable double-sided clamping mechanism through the extension telescopic cylinder, clamping telescopic cylinder, and clamping turntable. Combined with the limiting structure of the cross positioning groove, it can accommodate the clamping and fixing of various specifications of soundproof box panels. The clamping and positioning accuracy is high, and the locking effect is reliable, effectively resisting the influence of external forces under conditions such as conveying movement, spraying and rinsing, and high-temperature curing, preventing workpiece displacement, shaking, and misalignment, and ensuring the consistency of processing dimensions and processes throughout the entire process.

[0051] 3. Complete pretreatment process design to enhance substrate surface adhesion. The pretreatment unit adopts an integrated spray degreasing and convection drying combination pretreatment structure. High-pressure spray can thoroughly remove oil, dust and impurities from the surface of the board, and wastewater is collected centrally to prevent splashing, taking into account both cleaning effect and on-site environment. Subsequent hot air drying can quickly remove moisture from the surface of the workpiece, ensuring that the substrate is dry and clean, and completely solving the problem of coating peeling and cracking caused by surface stains and moisture, significantly improving the adhesion strength between the powder coating and the board.

[0052] 4. Multi-degree-of-freedom flexible spraying structure improves spraying uniformity and coverage. The multi-degree-of-freedom spraying unit relies on a multi-dimensional adjustment mechanism consisting of an electric lifting mechanism, a rotating turntable, and a three-section extension arm. Combined with a stable pressurized feeding system and an electrostatic spraying system, the spray gun can flexibly adjust its working angle, height, and coverage area. It can effectively complete full-coverage spraying of complex areas such as the inner and outer walls, corners, and folds of soundproof enclosure panels, reducing defects such as missed areas, powder accumulation, and uneven thickness. The electrostatic adsorption effect also reduces powder waste, saving on production materials.

[0053] 5. Segmented curing and cooling design optimizes coating quality and production cycle time. The independent constant-temperature curing zone of the curing and cooling unit uses a hot coil to stably control the temperature, allowing the plastic powder to fully melt, flow, and cross-link to form a dense and corrosion-resistant protective coating, enhancing the corrosion resistance and aging resistance of the soundproof enclosure for outdoor use. The directional air-cooling structure can quickly cool and shape the cured workpiece, shorten the cooling waiting time, speed up the entire production line, and increase overall production capacity.

[0054] 6. Controllable workpiece steering function, adaptable to the all-round machining needs of complex workpieces. The steering drive component in the closed-loop conveying system can precisely control the rotation and reversal of the workpiece at key stations such as pretreatment, spraying, and curing. This enables multi-angle spraying and cleaning of the sheet material, spraying without dead angles, and uniform heating and curing in all directions. It solves the problem of incomplete processing of one side of large, soundproof, irregularly shaped components and further improves the overall processing quality. Attached Figure Description

[0055] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0056] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction; Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective; Figure 3 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction; Figure 4 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction; Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention; Figure 6 For the present invention along Figure 3 A schematic diagram of the internal structure cut along line AA. Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line; Figure 8 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the CC line; Figure 9 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the DD line in the middle; Figure 10 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the EE line; Figure 11 For the present invention along Figure 4 A schematic diagram of the internal structure cut along the FF line.

[0057] In the diagram: 1-Integrated base, 2-Supporting legs, 3-Powder coated box, 4-Horizontal conveyor rail, 5-Arc-shaped conveyor rail, 6-Triangular support frame, 7-Conveyor support roller, 8-Rotation drive seat, 9-Circulating conveyor belt, 10-Conveyor push plate, 11-Lifting conveyor seat, 12-Limiting groove, 13-Steering top seat, 14-Clamping slot, 15-Lifting horizontal plate, 16-Connecting vertical plate, 17-Extension telescopic cylinder, 18-Clamping side plate, 19-Clamping turntable, 20-Clamping telescopic cylinder, 21-Telescopic clamping seat, 22-Cross positioning groove, 23-Drive motor, 24-Drive box, 25-Motor mounting bracket, 26-Steering drive motor, 27-Connecting steering wheel, 28-Telescopic clearance opening, 29-Positioning telescopic cylinder, 30-Positioning vertical plate, 31-Suspended spray box, 32-Water washing spray head, 33-Spray water storage tank 34-Booster water pump, 35-Water collection tank, 36-Drain outlet, 37-Splash guard, 38-Convection drying fan, 39-Electric heating element, 40-Supporting platform, 41-Electric cabinet, 42-Control panel, 43-Square mounting opening, 44-Electric guide rail, 45-Electric lifting slide, 46-Guide slot, 47-Glass cover, 48-Rotation drive motor, 49-Spraying turntable, 50-Three-section 51-High-pressure electrostatic spray gun, 52-Paint distribution box, 53-Feed hose, 54-Paint transfer box, 55-Spring feed tube, 56-Booster feed pump, 57-Observation port, 58-Glass window, 59-Mounting base, 60-Heating base, 61-Curing heating coil, 62-Power supply box, 63-Cooling air guide plate, 64-Air outlet, 65-Cooling air pump, 66-Feeding pipe. Detailed Implementation

[0058] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0059] like Figures 1 to 11 As shown, the fully automatic powder coating production line for the soundproof box of the multi-station collaborative generator set includes an integrated base 1, which is a square base that is horizontally set and extends laterally. Four grounded support legs 2 are fixed at the four corners of the lower surface of the integrated base 1.

[0060] The upper surface of the integrated base 1 is fixed with a powder coating box 3. The powder coating box 3 is a square box with openings on both sides. The powder coating box 3 is provided with a pretreatment unit, a multi-degree-of-freedom spraying unit and a curing and cooling unit from left to right. A closed-loop conveying system is provided between the pretreatment unit, the multi-degree-of-freedom spraying unit and the curing and cooling unit.

[0061] The closed-loop conveying system includes two longitudinally symmetrical transverse conveying guides 4 and two transversely symmetrical arc-shaped conveying guides 5. One transverse conveying guide 4 is located directly above the integrated base 1 and fixed to the inner top surface of the powder coating box 3. The other transverse conveying guide 4 is located on one longitudinal side of the powder coating box 3. The two transverse conveying guides 4 and the two arc-shaped conveying guides 5 are connected end to end in an ellipse. The cross-section of the transverse conveying guide 4 and the two arc-shaped conveying guides 5 is a C-shape with the opening facing downwards.

[0062] Two symmetrical triangular support frames 6 are provided on the horizontal sides of the powder coating box 3. The lower end of the triangular support frame 6 is grounded, and the upper end of the triangular support frame 6 is fixedly connected to the inner circumferential wall of the horizontal conveying guide rail 4 and the arc-shaped conveying guide rail 5 respectively.

[0063] Each transverse conveying guide rail 4 is equipped with a conveying drive assembly, which includes four symmetrical conveying support rollers 7. The upper and lower ends of the conveying support rollers 7 are rotatably mounted on the inner top and inner bottom surfaces of the transverse conveying guide rail 4, respectively. A rotating drive seat 8 is fixed on the upper surface of the transverse conveying guide rail 4, and the rotating drive seat 8 is connected to the two conveying support rollers 7 on the same side for transmission.

[0064] A circulating conveyor belt 9 is fitted between two horizontally opposite conveyor support rollers 7, and several equally spaced conveyor push plates 10 are fixed on the outer peripheral wall of each circulating conveyor belt 9.

[0065] Each arc-shaped conveyor rail 5 is also equipped with a conveyor drive assembly with the same structure.

[0066] The closed-loop conveying system also includes a hoisting conveying component, which includes a hoisting conveying base 11. The hoisting conveying base 11 is a square base, and the four vertical edges of the hoisting conveying base 11 are rounded.

[0067] The hoisting conveyor seat 11 is slidably mounted in the transverse conveying guide rail 4 and its lower surface slides closely against the inner bottom surface of the transverse conveying guide rail 4. Each longitudinal outer wall of the hoisting conveyor seat 11 is provided with a limiting groove 12, and the ends of the two longitudinally opposite conveying push plates 10 extend into the limiting groove 12.

[0068] The hoisting and conveying base 11 is rotatably fitted with a steering top seat 13 in the middle, and a laterally extending mounting groove 14 is provided in the middle of the upper surface of the steering top seat 13.

[0069] A horizontally extending hoisting plate 15 is fixed to the lower surface of the steering top seat 13. Two horizontally symmetrical connecting vertical plates 16 are fixed to both sides of the lower surface of the hoisting plate 15. An extension telescopic cylinder 17 is fixed to the horizontal outer wall of each connecting vertical plate 16. A vertically extending clamping side plate 18 is fixed to the telescopic end of each extension telescopic cylinder 17.

[0070] Each clamping side plate 18 has a clamping turntable 19 rotatably mounted on its transverse inner wall near the lower end. A horizontal clamping telescopic cylinder 20 is fixed on the inner side wall of the clamping turntable 19. A telescopic clamping seat 21 is fixed to the telescopic end of the clamping telescopic cylinder 20. A cross positioning groove 22 is opened on the side end face of the telescopic clamping seat 21.

[0071] A drive motor 23 is fixed on the transverse inner wall near the upper end of each clamping side plate 18, and a drive box 24 is fixed on the transverse outer wall of each clamping side plate 18. The drive box 24 is provided with a drive mechanism that connects the clamping turntable 19 and the drive motor 23.

[0072] Depending on the actual powder coating production needs, multiple sets of hoisting and conveying components can be set at intervals.

[0073] The closed-loop conveying system also includes a steering drive assembly, which includes three motor mounting brackets 25. The motor mounting brackets 25 are U-shaped brackets with their openings facing downwards. The three motor mounting brackets 25 are fixed at equal intervals along the transverse direction on the upper surface of the powder coating box 3 and are respectively set to the pretreatment unit, the multi-degree-of-freedom spraying unit and the curing and cooling unit.

[0074] Each motor mounting bracket 25 has a steering drive motor 26 fixed at the center of its upper surface. The output shaft of the steering drive motor 26 passes downward through the motor mounting bracket 25 and is fixed with a connecting steering wheel 27. The connecting steering wheel 27 is set close to the inner top surface of the motor mounting bracket 25.

[0075] The upper surface of the powder-coated box 3 is provided with three telescopic clearance openings 28 corresponding to the three connecting steering wheels 27. Each telescopic clearance opening 28 is provided with a vertical positioning telescopic cylinder 29. The upper fixed end of the positioning telescopic cylinder 29 is fixed at the center of the lower surface of the connecting steering wheel 27, and the lower telescopic end of the positioning telescopic cylinder 29 is fixed with a positioning vertical plate 30 that matches the mounting groove 14.

[0076] The pretreatment unit is located on the inside of the powder coating box 3 on one side of the horizontal direction. It includes a spray degreasing assembly. The spray degreasing assembly includes two longitudinally symmetrical suspended spray boxes 31. The upper ends of the two suspended spray boxes 31 are fixed on the inner top surface of the powder coating box 3 and are respectively located on both sides of the horizontal conveying guide rail 4.

[0077] The suspended spray box 31 is a J-shaped box, and several water washing spray heads 32 are fixed horizontally on the lower inclined surface of each suspended spray box 31.

[0078] Two longitudinally symmetrical spray water storage tanks 33 are fixed on the upper surface of the powder coating box 3. The spray water storage tanks 33 are connected to the suspended spray box 31. Each spray water storage tank 33 is fixed with a booster water supply pump 34.

[0079] The upper surface of the integrated base 1 is provided with a water collection trough 35, which is located directly below the two suspended spray boxes 31. The longitudinal side wall of the integrated base 1 is provided with a drain outlet 36 that is connected to the water collection trough 35.

[0080] Two splash guards 37 are provided on the horizontal sides of the water collection tank 35. The lower end of the splash guard 37 is fixed to the upper surface of the integrated base 1, and the two longitudinal ends of the splash guard 37 are fixed to the longitudinal inner wall of the powder coating box 3.

[0081] The pretreatment unit also includes a convection drying assembly, which includes two convection drying fans 38. The two convection drying fans 38 are located on both sides of the spray degreasing assembly and fixed on the longitudinal side wall of the spray coating box 3. Each convection drying fan 38 has several electric heating tubes 39 fixed inside.

[0082] The multi-degree-of-freedom spraying unit includes a support platform 40, which is located on one longitudinal side of the integrated base 1 and grounded at its lower end. An electrical cabinet 41 is fixed on the upper surface of the support platform 40, and the back of the electrical cabinet 41 is attached to the longitudinal outer wall of the spraying box 3.

[0083] The lower half of the front of the electrical cabinet 41 is fixed with a control panel 42.

[0084] The upper part of the electrical cabinet 41 has a square mounting opening 43. Each horizontal inner wall of the square mounting opening 43 is fixed with a vertically extending electric guide rail 44. An electric lifting slide 45 is slidably mounted between the two electric guide rails 44.

[0085] The longitudinal side wall of the powder coating box 3 is provided with a guide groove 46 that communicates with the square mounting port 43, and the guide groove 46 extends vertically.

[0086] A glass cover plate 47 is provided on the outside of the square mounting port 43, and the glass cover plate 47 is fixed to the upper half of the front of the electrical cabinet 41.

[0087] A rotary drive motor 48 is fixed on the longitudinal outer wall of the electric lifting slide 45. The output shaft of the rotary drive motor 48 passes through the electric lifting slide 45 and the guide slot 46 in sequence and extends into the powder coating box 3. A spraying turntable 49 is fixed at the end of the output shaft of the rotary drive motor 48. The spraying turntable 49 is set close to the longitudinal inner wall of the powder coating box 3.

[0088] A set of three-section spraying extension arms 50 is hinged to each of the two sides of the spraying turntable 49. Each section of the three-section spraying extension arm 50 is equipped with an independent drive motor to achieve independent swinging. A high-voltage electrostatic spray gun 51 is fixed at the end of the three-section spraying extension arm 50.

[0089] A paint distribution box 52 is fixed in the middle of the side end face of the spraying turntable 49. Two feed hoses 53 are connected to the outer walls of the paint distribution box 52 on both sides. The ends of the feed hoses 53 are fixedly connected to the high-pressure electrostatic spray gun 51.

[0090] A paint transfer box 54 is fixed on one longitudinal side of the upper surface of the powder coating box 3. A spring feed pipe 55 is fixedly connected to the lower end of the paint transfer box 54. The lower end of the spring feed pipe 55 is rotatably installed at the center of the longitudinal outer wall of the paint distribution box 52.

[0091] A booster pump 56 is fixed on one side of the upper surface of the support platform 40. The booster pump 56 is connected to a feed pipe 66, and the end of the feed pipe 66 is fixedly connected to the paint transfer box 54.

[0092] An observation port 57 is provided on the longitudinal side wall of the middle section of the powder coating box 3. The observation port 57 is located on the opposite side of the electrical cabinet 41. A glass window 58 is fixed inside the observation port 57. The powder coating status of the soundproof box panel can be observed in real time through the glass window 58.

[0093] The curing and cooling unit is located on the other side of the interior of the powder coating box 3, and includes two longitudinally symmetrical mounting bases 59, which are respectively fixed on the longitudinal inner walls on both sides of the powder coating box 3.

[0094] Each mounting base 59 has an electric heating base 60 fixed on the longitudinal inner wall near the multi-degree-of-freedom spraying unit, and a curing heating coil 61 is fixed on the side end face of the electric heating base 60.

[0095] A power supply box 62, which is connected to the heating base 60 for power supply, is fixed on the longitudinal outer wall of the powder coating box 3.

[0096] Two symmetrical cooling air guide plates 63 are fixed on the longitudinal outer wall of each mounting base 59 near the opening end of the powder coating box 3. An air outlet 64 is provided on the mounting base 59 and is located between the two cooling air guide plates 63.

[0097] A cooling air pump 65, which is connected to the mounting base 59, is also fixed on the longitudinal outer wall of the powder coating box 3.

[0098] When using this invention: During production, the closed-loop conveyor system connects the transverse conveyor guide rail 4 with the arc-shaped conveyor guide rail 5 to form a circular conveying path. The rotating drive seat 8 drives the conveyor support roller 7 to rotate, which in turn drives the continuous movement of the circulating conveyor belt 9. Combined with the equidistantly arranged conveyor push plates 10, this provides the driving force for the hoisting conveyor components. The hoisting conveyor seat 11 is fitted inside the guide rail and, relying on the limiting groove 12, cooperates with the conveyor push plate 10, rotating synchronously with the conveyor belt. Multiple sets of hoisting conveyor components can be configured at intervals according to production capacity requirements, enabling simultaneous operation of multiple workpieces at different workstations.

[0099] The soundproof box panels to be processed are first clamped and fixed by an external hoisting mechanism. The distance between the clamping side plates 18 is adjusted by controlling the extension and telescopic cylinders 17 on both sides to adapt to different workpiece sizes. The clamping telescopic cylinder 20 extends and extends in conjunction with the clamping turntable 19 to precisely clamp the workpiece from the side. The cross positioning groove 22 can complete the limiting and positioning of the soundproof box panels (mostly right-angle plates) to avoid displacement and shaking during the spraying and curing process and ensure clamping stability.

[0100] The workpiece first enters the pre-treatment unit area via the hoisting and conveying assembly. A booster water pump 34 draws spray water, which is then pressurized and injected into the spray water storage tank 33. The spray water is then transported from the storage tank 33 to the J-shaped suspended spray boxes 31 on both sides. Finally, multiple water-washing spray heads 32 perform a comprehensive degreasing spray on the surface of the soundproof box panels, removing oil and impurities and enhancing paint adhesion. Wastewater generated during spraying falls into the bottom collection tank 35 and is collected and discharged through the drain outlet 36. A splash guard 37 prevents spillage of the spray water, maintaining a clean working environment inside the box. After degreasing, a convection drying fan 38, in conjunction with internal electric heating elements 39, generates high-temperature hot air to convectively dry the wet workpiece, rapidly evaporating moisture from the panel surface and ensuring a dry and clean surface, laying the foundation for subsequent powder coating operations.

[0101] The pre-processed workpiece is transferred to the multi-degree-of-freedom spraying unit via a closed-loop conveyor system. Operators adjust the equipment operating parameters via the control panel 42. The electric guide rail 44 drives the electric lifting slide 45 to vertically displace, which in turn drives the spraying turntable 49 to rotate via the rotation drive motor 48. Combined with the multi-segment independent swing adjustment of two sets of three-section spraying extension arms 50, the working angle, height, and working range of the high-pressure electrostatic spray gun 51 can be flexibly adjusted. The booster pump 56 is started, and the plastic powder coating is conveyed to the coating transfer box 54 via the feeding pipe 66, then to the coating distribution box 52 via the spring feeding pipe 55, and finally distributed to each high-pressure electrostatic spray gun 51 via the feeding hose 53. Based on the electrostatic spraying principle, the plastic powder is evenly atomized and adhered to the inside, outside, and corners of the soundproof box panel. During operation, operators can monitor the spraying status in real time through the opposite glass window 58, adjusting spraying parameters promptly to ensure uniform coating thickness and no missed spray defects.

[0102] After the coating is completed, the workpiece continues to enter the curing and cooling unit via the conveying system. The curing heat coils 61 mounted on the heating seats 60 on both sides release stable high temperatures, forming a constant temperature curing zone within the enclosed chamber. This allows the plastic powder adhering to the workpiece surface to fully melt, flow, and solidify, forming a dense coating and enhancing the bonding strength between the coating and the substrate. After the curing process, the cooling air pump 65 delivers cooling airflow into the mounting base 59. The airflow is discharged through the air outlet 64, and the cooling air guide plates 63 arranged above and below guide the airflow direction, providing directional air cooling for the high-temperature workpiece, rapidly reducing the overall temperature of the workpiece, and accelerating the coating setting.

[0103] During the entire process of workpiece processing, the steering drive assembly on the top of the powder coating box 3 can be activated as needed. The positioning telescopic cylinder 29 drives the positioning vertical plate 30 to move down and be inserted into the mounting groove 14 of the steering top seat 13. Together with the steering drive motor 26, it realizes the precise steering adjustment of the workpiece, which is suitable for the process requirements of complex board surface steering spray degreasing, multi-angle spraying and all-round curing.

[0104] The entire process relies on closed-loop conveying to achieve continuous and uninterrupted flow, with each workstation working synchronously and collaboratively. From pretreatment and electrostatic spraying to curing and cooling, it is completed in one go. The entire process is automated, reducing manual intervention and is suitable for batch and standardized powder coating production of generator set soundproof boxes.

[0105] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A fully automated powder coating production line for the soundproof enclosure of a multi-station collaborative generator set, characterized by: Includes an integrated base; The upper surface of the integrated base is fixed with a powder coating box. The powder coating box is provided with a pretreatment unit, a multi-degree-of-freedom spraying unit and a curing and cooling unit from left to right. A closed-loop conveying system is provided between the pretreatment unit, the multi-degree-of-freedom spraying unit and the curing and cooling unit. The multi-degree-of-freedom spraying unit includes a support platform, which is located on one longitudinal side of the integrated base and grounded at its lower end. An electrical cabinet is fixed on the upper surface of the support platform, and the back of the electrical cabinet is attached to the longitudinal outer wall of the spraying box. The upper half of the electrical cabinet has a square mounting opening. Each horizontal inner wall of the square mounting opening is fixed with a vertically extending electric guide rail. An electric lifting slide is slidably engaged between the two electric guide rails. The longitudinal sidewall of the powder coating box is provided with a guide groove that communicates with the square mounting opening, and the guide groove extends vertically. A rotary drive motor is fixed on the longitudinal outer wall of the electric lifting slide. The output shaft of the rotary drive motor passes through the electric lifting slide and the guide slot in sequence and extends into the powder coating box. A spraying turntable is fixed at the end of the output shaft of the rotary drive motor. The spraying turntable is set close to the longitudinal inner wall of the powder coating box. A set of three-section spraying extension arms is hinged to each of the two sides of the spraying turntable. Each section of the three-section spraying extension arm is equipped with an independent drive motor to achieve independent swinging. A high-voltage electrostatic spray gun is fixed at the end of the three-section spraying extension arm. The closed-loop conveying system includes two longitudinally symmetrical transverse conveying guides and two transversely symmetrical arc-shaped conveying guides. One of the transverse conveying guides is located directly above the integrated base and fixed to the inner top surface of the powder coating box. The other transverse conveying guide is located on one longitudinal side of the powder coating box. The two transverse conveying guides and the two arc-shaped conveying guides are alternately connected end to end to form an ellipse. The cross-section of the transverse conveying guide and the two arc-shaped conveying guides is a C-shape with the opening facing downwards. The powder coating box has two symmetrical triangular support frames on its horizontal sides. The lower end of the triangular support frame is grounded, and the upper end of the triangular support frame is fixedly connected to the inner circumferential wall of the horizontal conveying guide rail and the arc-shaped conveying guide rail, respectively. The closed-loop conveying system also includes a hoisting conveying assembly, which includes a hoisting conveying base. The hoisting conveying base is a square base, and the four vertical edges of the hoisting conveying base are rounded. The hoisting conveyor seat is slidably fitted inside the transverse conveying guide rail and its lower surface slides close to the inner bottom surface of the transverse conveying guide rail. Each longitudinal outer wall of the hoisting conveyor seat is provided with a limiting groove. The hoisting and conveying base is rotatably fitted with a steering top seat in the middle, and the upper surface of the steering top seat is provided with a horizontally extending mounting groove in the middle. The lower surface of the steering top seat is fixed with a horizontally extending hoisting horizontal plate. Two horizontally symmetrical connecting vertical plates are fixed on both sides of the lower surface of the hoisting horizontal plate. An extension telescopic cylinder is fixed on the horizontal outer wall of each connecting vertical plate. A vertically extending clamping side plate is fixed at the telescopic end of each extension telescopic cylinder. Each clamping side plate has a clamping turntable rotatably mounted on its transverse inner wall near the lower end. A horizontal clamping telescopic cylinder is fixed on the inner wall of the clamping turntable. A telescopic clamping seat is fixed to the telescopic end of the clamping telescopic cylinder. A cross positioning groove is opened on the side end face of the telescopic clamping seat. A drive motor is fixed on the transverse inner wall near the upper end of each clamping side plate, and a drive box is fixed on the transverse outer wall of each clamping side plate. The drive box is provided with a drive mechanism that connects the clamping turntable and the drive motor. The hoisting and conveying components are configured in multiple groups, with the groups arranged at intervals. The closed-loop conveying system also includes a steering drive assembly, which includes three motor mounting brackets. The motor mounting brackets are U-shaped brackets with their openings facing downwards. The three motor mounting brackets are fixed at equal intervals along the transverse direction on the upper surface of the powder coating box and are respectively set to correspond to the pretreatment unit, the multi-degree-of-freedom spraying unit and the curing and cooling unit. A steering drive motor is fixed at the center of the upper surface of each motor mounting bracket. The output shaft of the steering drive motor passes downward through the motor mounting bracket and is fixed with a connecting steering wheel. The connecting steering wheel is set close to the inner top surface of the motor mounting bracket. The upper surface of the powder coating box has three telescopic clearance openings corresponding to the three connecting steering wheels. Each telescopic clearance opening is equipped with a vertical positioning telescopic cylinder. The upper fixed end of the positioning telescopic cylinder is fixed at the center of the lower surface of the connecting steering wheel, and the lower telescopic end of the positioning telescopic cylinder is fixed with a positioning vertical plate that matches the mounting groove.

2. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 1, characterized in that: The integrated base is a horizontally set, laterally extended square base, and four grounded support legs are fixed at the four corners of the lower surface of the integrated base. The powder-coated box is a square box with openings on both sides.

3. The fully automated powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 2, characterized in that: Each of the transverse conveying guide rails is provided with a conveying drive assembly, which includes four symmetrical conveying support rollers in pairs. The upper and lower ends of the conveying support rollers are respectively rotatably mounted on the inner top surface and inner bottom surface of the transverse conveying guide rail. A rotating drive seat is fixed on the upper surface of the transverse conveying guide rail, and the rotating drive seat is connected and driven by the two conveying support rollers on the same side. A circulating conveyor belt is sleeved between two transversely opposite conveyor support rollers. Several equally spaced conveyor push plates are fixed on the outer peripheral wall of each circulating conveyor belt. The ends of two longitudinally opposite conveyor push plates extend into the limiting groove. Each of the aforementioned arc-shaped conveying guide rails is also equipped with a conveying drive assembly with the same structure.

4. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 3, characterized in that: The pretreatment unit is located on the inner transverse side of the powder coating box and includes a spray degreasing assembly. The spray degreasing assembly includes two longitudinally symmetrical suspended spray boxes. The upper ends of the two suspended spray boxes are fixed to the inner top surface of the powder coating box and are respectively located on both sides of the transverse conveying guide rail. The suspended spray box is a J-shaped box, and several water washing spray heads are fixed horizontally on the lower inclined surface of each suspended spray box; Two longitudinally symmetrical spray water tanks are fixed on the upper surface of the powder coating box. The spray water tanks are connected to the suspended spray box. Each spray water tank is equipped with a booster water pump. The upper surface of the integrated base is provided with a water collection trough, which is located directly below the two suspended spray boxes. The longitudinal side wall of the integrated base is provided with a drain outlet that communicates with the water collection trough. Two splash guards are provided on the horizontal sides of the water collection tank. The lower end of the splash guard is fixed to the upper surface of the integrated base, and the two longitudinal ends of the splash guard are fixed to the longitudinal inner wall of the powder coating box.

5. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 4, characterized in that: The pretreatment unit further includes a convection drying assembly, which includes two convection drying fans. The two convection drying fans are located on both sides of the spray degreasing assembly and fixed on the longitudinal side wall of the powder coating box. Each convection drying fan has several electric heating tubes fixed inside.

6. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 5, characterized in that: A paint distribution box is fixed in the middle of the side end face of the spraying turntable. Two feed hoses are connected to the outer walls of the paint distribution box on both sides. The ends of the feed hoses are fixedly connected to the high-voltage electrostatic spray gun. A paint transfer box is fixed to one longitudinal side of the upper surface of the powder coating box, and a spring feed pipe is fixedly connected to the lower end of the paint transfer box. The lower end of the spring feed pipe is rotatably installed at the center of the longitudinal outer wall of the paint distribution box. A booster pump is fixed to one side of the upper surface of the support platform. The booster pump is connected to an external feeding pipe, and the end of the feeding pipe is fixedly connected to the paint transfer box.

7. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 6, characterized in that: A control panel is fixed to the lower half of the front of the electrical cabinet; A glass cover is provided on the outside of the square mounting opening, and the glass cover is fixed to the upper half of the front of the electrical cabinet. An observation port is provided on the longitudinal side wall of the middle section of the powder coating box. The observation port is located on the opposite side of the electrical cabinet. A glass window is fixed inside the observation port, through which the powder coating status of the soundproof box panel can be observed in real time.

8. The fully automatic powder coating production line for the soundproof enclosure of a multi-station collaborative generator set according to claim 7, characterized in that: The curing and cooling unit is located on the other side of the interior of the powder coating box, and includes two longitudinally symmetrical mounting bases. The two mounting bases are respectively fixed on the longitudinal inner walls on both sides of the powder coating box. Each of the mounting bases has an electric heating base fixed on the longitudinal inner wall of the side near the multi-degree-of-freedom spraying unit, and a curing heating coil is fixed on the side end face of the electric heating base. A power supply box connected to the heating base and powered is fixed on the longitudinal outer wall of the powder coating box. Two symmetrical cooling air guide plates are fixed on the longitudinal outer wall of each mounting base near the opening end of the powder coating box. An air outlet is provided on the mounting base and the air outlet is located between the two cooling air guide plates. A cooling air pump connected to the mounting base is also fixed on the longitudinal outer wall of the powder coating box.

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