Generator stator slotted vane coating spray room, conveying device and control method

Abstract

The invention relates to the technical field of part paint spraying, aims to solve the problems of non-uniform coating, large paint mist harm, conveying accumulated paint pollution, complicated maintenance and difficulty in large-scale production caused by manual or simple equipment for coating stator slot pieces, and provides a generator stator slot piece coating spraying room, a conveying device and a control method. Comprising a spraying room body, a spraying robot, automatic paint supply equipment and a ventilation and purification assembly. The conveying device comprises a conveying chain mechanism and a detachable supporting assembly. The control method comprises the steps of conveying, synchronous coating, purification, delayed conveying, fault alarming and liquid level linkage pump stopping. The device has the beneficial effects that the automation degree is high, the coating quality is stable, the environment friendliness is high, workpieces are not prone to pollution, maintenance is convenient and fast, and large-scale production is facilitated.

Description

Technical Field

[0001] This invention relates to the field of component painting technology, and more specifically, to a generator stator slot coating spray booth, conveying device, and control method. Background Technology

[0002] The stator ventilation slots of a generator are key components that ensure heat dissipation and stable operation of the generator. They are in a humid, hot, and dusty working environment for a long time, and require anti-corrosion coating to improve their durability. Currently, stator slot coating mostly relies on manual or simple semi-automatic equipment. Manual spraying is prone to uneven coating thickness and missed areas due to differences in operation, and the paint mist is a great health hazard to operators. Simple equipment lacks efficient paint mist purification and precise workpiece positioning mechanisms, making it difficult to balance coating quality stability and production efficiency, and failing to meet the needs of large-scale production. Summary of the Invention

[0003] The present invention aims to provide a generator stator slot coating spray booth, conveying device and control method to solve the problems of existing stator slot coating relying on manual labor or simple equipment, uneven coating, great harm of paint mist, easy accumulation of paint on the conveying device to contaminate the workpiece, cumbersome maintenance and inability to adapt to large-scale and efficient production.

[0004] The embodiments of the present invention are implemented as follows: This invention provides a generator stator slot coating spray booth, which includes a spray booth body, a spraying robot, an automatic paint supply device, and a ventilation and purification component; The main body of the spray booth is equipped with an inlet and outlet for the stator laminations to enter and exit; The aforementioned spraying robot is located inside the main body of the spray booth and is connected to an automatic paint supply system to obtain coating paint. The aforementioned ventilation and purification components include a static pressure air supply ceiling, an H13 high-efficiency filter, a water curtain structure, and an exhaust gas extraction pipe. The aforementioned static pressure air supply ceiling and the aforementioned H13 high-efficiency filter are respectively installed on the top of the main body of the spray booth. The aforementioned water curtain structure includes a water curtain plate, a water curtain pump, a spray pipe, and a water storage tank. The water curtain plate is located inside the main body of the spray booth near the spraying area. One end of the aforementioned exhaust gas extraction pipe is connected to the interior of the main body of the spray booth and is located at the top of the spray pipe. The other end of the aforementioned exhaust gas extraction pipe is connected to an exhaust gas treatment center.

[0005] In operation, the automatic paint supply equipment continuously supplies paint to the spraying robot inside the spray booth. The stator slots enter through the inlet and outlet of the spray booth and are transported to the spraying area by the conveying device. Simultaneously, the ventilation and purification components are activated, and external air, after being treated, enters the spray booth through the static pressure air supply ceiling and the H13 high-efficiency filter, providing clean airflow for the spraying operation. The paint mist generated when the spraying robot coats the stator slots is partially intercepted by the water curtain plate near the spraying area inside the spray booth and further sprayed by the spray pipe, efficiently capturing the paint mist. The other part is drawn to the exhaust gas treatment center by the exhaust pipe located at the top of the spray pipe, achieving efficient purification of the paint mist. After the stator slots are coated, they are transported out of the spray booth through the inlet and outlet, ensuring coating quality and working environment safety throughout the process.

[0006] Optionally: A cleaning water tank is provided on the outside of the discharge end of the main body of the spray booth. The cleaning water tank is located below the conveyor chain mechanism. The conveyor chain mechanism corresponding to the cleaning water tank is sunken and located below the water level of the cleaning water tank.

[0007] With this setup, the aforementioned conveyor chain mechanism will continuously have paint adhering to it during use. Since the aforementioned conveyor chain mechanism passes through the aforementioned cleaning water tank, it is convenient to clean the conveyor chain mechanism simultaneously during operation without disassembling the conveyor chain or cleaning it in situ in the spray booth. This not only ensures thorough cleaning to avoid residual paint contaminating subsequent stator plates, but also simplifies the cleaning operation, reduces interference with the spray booth coating operation, and further improves the overall operation and maintenance efficiency of the production line.

[0008] Optionally, the outlet of the water curtain pump is connected to the water curtain plate and the spray pipe respectively via pipes.

[0009] With this configuration, the water in the water storage tank can be stably drawn by the water curtain pump and transported through pipelines to the top of the water curtain plate to form a complete water curtain and to the spray pipe for further spraying and settling of the exhaust gas, effectively capturing paint mist in the spray booth; moreover, the structure is simple and the pipeline is compact, which can reduce the risk of water leakage and facilitate system inspection and maintenance.

[0010] Optionally, the water storage tank is equipped with a liquid level sensor, which is electrically connected to the water curtain pump and is used to trigger the water curtain pump to stop operating when the liquid level in the water storage tank is lower than a preset value.

[0011] With this setup, the liquid level sensor is linked to the water curtain pump. When the liquid level is lower than the preset value, the water curtain pump will automatically stop. This not only avoids damage from the water curtain pump running dry and extends its lifespan, but also prevents the water curtain pump from being interrupted due to lack of water, thus ensuring the environmentally friendly operation of the spray booth.

[0012] Optionally: The top of the aforementioned static pressure air supply ceiling is connected to an air supply duct, and the end of the air supply duct away from the aforementioned static pressure air supply ceiling is connected to a filter assembly. An exhaust fan is provided at the port of the air supply duct near the aforementioned filter assembly. The interior of the aforementioned filter assembly is provided with an F8 medium-efficiency filter bag, an F5 medium-efficiency filter bag, a G4 pre-filter, a wet curtain paper, and louvers in sequence.

[0013] With this setup, the exhaust fan can drive airflow through the aforementioned air supply duct to the aforementioned static pressure air supply ceiling; the aforementioned F8 medium-efficiency filter bag, the aforementioned F5 medium-efficiency filter bag, and the aforementioned G4 primary filter in the aforementioned filter assembly can filter out impurities in the air layer by layer; the aforementioned wet curtain paper assists in humidity adjustment; and the aforementioned louvers regulate airflow, which not only ensures the cleanliness of the air entering the spray booth and avoids contamination of the coating, but also stabilizes the air supply and optimizes the spraying environment.

[0014] Optionally, the aforementioned filter assembly is mounted on an elevated steel platform, with a staircase on one side of the platform. Safety railings are installed along the edges of the steel platform.

[0015] With this configuration, the filter components are placed on the elevated steel platform, which saves ground space and avoids interference with other equipment in the spray booth. The steel platform is equipped with stairs to facilitate personnel access for maintenance of the filter components, and the safety railings at the edges prevent personnel from falling, thus balancing space utilization and operational safety.

[0016] Optionally: The water storage tank is located at the bottom of the inner conveyor chain mechanism. The water storage tank is equipped with a collection ramp for receiving sprayed materials or impurities. The collection ramp has a discharge trough. The bottom surface of the water storage tank corresponding to the discharge trough has an inclined surface. The water curtain pump is installed at the lowest point of the inclined surface.

[0017] With this configuration, the water storage tank is located at the bottom of the conveyor chain, allowing it to collect spraying waste nearby. The collection ramp, in conjunction with the discharge trough, can collect the waste, and the inclined bottom surface guides the water to flow to the lowest point, facilitating stable water intake by the water curtain pump. This not only improves waste collection efficiency but also ensures stable water supply to the pump and reduces equipment failures.

[0018] Optionally, an exhaust fan is provided at the inlet end of the above-mentioned exhaust gas extraction pipe.

[0019] With this configuration, the exhaust fan can enhance the negative pressure suction in the exhaust gas extraction pipe, accelerating the intake of paint mist that is not intercepted by the water curtain in the main body of the spray booth and transporting it to the exhaust gas treatment center, thereby improving the paint mist discharge efficiency. At the same time, it can maintain a stable airflow direction in the main body of the spray booth, preventing paint mist from lingering and spreading in the spray booth, and further ensuring a clean spraying environment and the health of operators.

[0020] In one embodiment of this invention: a conveying device is also provided, including a conveyor chain mechanism and a detachable support assembly; The aforementioned conveyor chain mechanism is a stainless steel mesh belt conveyor chain, and the aforementioned spray booth main body's inlet and outlet; The aforementioned detachable support assembly includes a fixed component and a movable support component. The fixed component is fixedly installed on the chain link of the aforementioned conveyor chain mechanism. The movable support component is fixed to the fixed component by a combination of nuts and buckles. The surface of the movable support component is provided with a triangular support structure for supporting the stator slot laminations. The inner and outer sides of the movable support component are both brushed surfaces, and a through drainage hole is also provided on them.

[0021] In use, the stator slot pieces are placed on the detachable support assembly of the conveyor chain mechanism, and are stably supported by the triangular support structure on the surface of the movable support. Then, the conveyor chain mechanism starts, carrying the stator slot pieces through the inlet and outlet of the spray booth body, and accurately transporting them to the spraying area. During the spraying process, the brushed surface of the movable support reduces paint adhesion, and the through-holes can drain residual paint or condensate in time, preventing paint accumulation from contaminating the stator slot pieces. When the movable support needs maintenance or replacement, it can be removed from the fixed part simply by disassembling the nut and clip, which is convenient and does not affect the overall operation of the conveyor chain mechanism.

[0022] Optionally, the apex angle of the above-mentioned triangular support structure is 60° to 90°, and two adjacent movable support members are spaced apart on the above-mentioned conveyor chain mechanism.

[0023] This design, with its angle setting, allows the triangular support structure to stabilize the stator slots while reducing the contact area and minimizing the risk of paint contamination of the workpiece. The spaced distribution of adjacent movable support components allows for the adaptation to slots of different sizes, ensuring conveying stability.

[0024] Optionally: the above-mentioned fasteners are made of stainless steel, and the above-mentioned movable support is made of aluminum alloy, with an anti-stick coating on the surface.

[0025] With this design, the aforementioned fasteners are made of stainless steel for corrosion resistance and durability, while the aforementioned movable support components are made of lightweight aluminum alloy for easy disassembly. The addition of an anti-stick coating reduces paint adhesion, thus reducing pollution and facilitating replacement, ensuring the stable application of the detachable support components.

[0026] In one embodiment of this invention: a generator stator lamination coating control method is also provided, based on the above-mentioned coating spray booth and the above-mentioned conveying device, including the following steps: Step 1: Preset the encoder pulse signal threshold of the conveyor chain mechanism from the inlet of the spray booth body to the spraying position inside the spray booth body, and fix the encoder on the drive shaft of the conveyor chain mechanism. Step 2: When the stator slot passes through the inlet of the main body of the spray booth, the photoelectric sensor at the inlet is triggered. The photoelectric sensor generates a signal according to the contact disconnection logic and transmits it to the control unit. Step 3: After receiving the signal, the control unit starts the encoder to record the pulse signals of the conveyor chain mechanism's movement and feeds them back to the control unit in real time. Step four: When the pulse signal reaches the preset threshold, the control unit stops the movement of the above-mentioned conveyor chain mechanism and starts the above-mentioned spraying robot to perform coating operations on the stator slots.

[0027] Optionally: In step S4, after the painting robot completes the painting operation, the distance between two adjacent workpieces on the conveyor chain mechanism is adjusted by a preset threshold, and the adjustment range of the distance between two adjacent workpieces is 300mm to 1200mm.

[0028] This setup allows for sufficient spacing between workpieces to prevent cross-contamination during spraying, and also enables adjustment of production cycle time to meet capacity requirements by adjusting different spacings.

[0029] Optionally, the photoelectric sensor is a through-beam photoelectric sensor, and its sensing distance is adjustable in the range of 50mm to 300mm.

[0030] With this setup, the through-beam photoelectric sensor can achieve accurate sensing and avoid false triggering caused by paint mist interference in the spraying environment; the adjustable sensing distance of 50mm to 300mm can adapt to the detection needs of stator slots of different sizes, improving the adaptability of positioning control.

[0031] Optionally, the control unit is also equipped with a fault alarm module. When the error of the pulse signal fed back by the encoder for three consecutive times exceeds 5%, the fault alarm module will issue an audible and visual alarm.

[0032] With this configuration, the fault alarm module can monitor the encoder pulse signal error in real time. When the error exceeds 5% three times in a row, an audible and visual alarm will be triggered. This will help detect abnormalities in the conveyor positioning in a timely manner, prevent misalignment of the coating due to positioning deviation, reduce the scrap of workpieces, and ensure the stable operation of the production line.

[0033] In summary, the generator stator slot coating spray booth, conveying device and control method disclosed in this invention have the advantages of high automation, stable coating quality, strong environmental protection, easy workpiece contamination, convenient maintenance and easy adaptation to large-scale production. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is an end cross-sectional view of a generator stator slot coating spray booth according to an embodiment of the present invention; Figure 2 This is a partially enlarged view of a generator stator slot coating spray booth according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a conveying device according to an embodiment of the present invention; Figure 4 This is a bottom view of a conveying device according to an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the fixing method of the fixing member and the movable support member in an embodiment of the present invention; Figure 6 This is a side view of a generator stator slot coating spray booth according to an embodiment of the present invention.

[0036] Icons: 1-Spray booth main body, 2-Spraying robot, 3-Ventilation and purification components, 4-Static pressure air supply ceiling, 5-H13 high-efficiency filter, 6-Water curtain structure, 7-Exhaust gas extraction pipe, 8-Water curtain plate, 9-Water curtain pump, 10-Spray pipe, 11-Water storage tank, 12-Conveyor chain mechanism, 13-Removable support components, 14-Fixed parts, 15-Modible support parts, 16-Triangular support structure, 17-Drain hole, 18-Air supply duct, 19-Filter components, 20-F8 medium-efficiency filter bag, 21-F5 medium-efficiency filter bag, 22-G4 primary filter, 23-Wet curtain paper, 24-Veneers, 25-Steel platform, 26-Staircase, 27-Safety railing, 28-Collection ramp, 29-Discharge trough, 30-Inclined surface, 31-Cleaning water tank, 32-Exhaust fan. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0039] Example See Figure 1 and Figure 2 This embodiment proposes a generator stator slot coating spray booth, including a spray booth body 1, a spraying robot 2, an automatic paint supply device (not shown in the figure) and a ventilation and purification component 3; The main body of the spray booth 1 is equipped with an inlet and outlet for the stator laminations to enter and exit (not shown in the figure); The painting robot 2 is located inside the main body of the spray booth 1 and is connected to the automatic paint supply equipment to obtain the paint. The ventilation and purification component 3 includes a static pressure air supply well 4, an H13 high-efficiency filter 5, a water curtain structure 6, and an exhaust gas extraction pipe 7. The static pressure air supply well 4 and the H13 high-efficiency filter 5 are respectively installed on the top of the spray booth body 1. The water curtain structure 6 includes a water curtain plate 8, a water curtain pump 9, a spray pipe 10, and a water storage tank 11. The water curtain plate 8 is located inside the spray booth body 1 near the spraying area. One end of the exhaust gas extraction pipe 7 is connected to the interior of the spray booth body 1 and is located at the top of the spray pipe 10. The other end of the exhaust gas extraction pipe 7 is connected to the exhaust gas treatment center (not shown in the figure).

[0040] During operation, the automatic paint supply equipment continuously supplies paint to the spraying robot 2 inside the spray booth body 1. The stator slots enter through the inlet and outlet of the spray booth body 1 and are transported to the spraying area by the conveying device. At the same time, the ventilation and purification components 3 are activated, and the outside air, after being treated, enters the spray booth body 1 through the static pressure air supply ceiling 4 and the H13 high-efficiency filter 5, providing clean airflow for the spraying operation. When the spraying robot 2 coats the stator slots, part of the paint mist generated is intercepted by the water curtain plate 8 (the water curtain pump 9 supplies water to the water curtain plate 8 through pipes to form a water curtain) inside the spray booth body 1 near the spraying area, and is further sprayed by the spray pipe 10, which efficiently captures the paint mist in the spray booth. The other part is drawn to the exhaust gas treatment center by the exhaust gas extraction pipe 7 located at the top of the spray pipe 10, achieving efficient purification of the paint mist. After the stator slots are coated, they are transported out of the spray booth body 1 through the inlet and outlet, ensuring the coating quality and the safety of the working environment throughout the process.

[0041] See Figure 1 , Figure 2 and Figure 6A cleaning water tank 31 is provided on the outer side of the discharge end of the spray booth body 1. The cleaning water tank 31 is located below the conveyor chain mechanism 12. The conveyor chain mechanism 12 corresponding to the cleaning water tank 31 is sunken and located below the water level of the cleaning water tank 31. Paint will continuously adhere to the conveyor chain mechanism 12 during use. Since the conveyor chain mechanism 12 passes through the cleaning water tank 31, it is convenient to clean the conveyor chain mechanism 12 simultaneously during operation without disassembling the conveyor chain or cleaning it in situ in the spray booth. This ensures thorough cleaning to avoid residual paint contaminating the subsequent stator slots, simplifies the cleaning operation, reduces interference with the spray booth coating operation, and further improves the overall operation and maintenance efficiency of the production line.

[0042] The outlet of the water curtain pump 9 is connected to the water curtain plate 8 and the spray pipe 10 through pipes. In this way, the water curtain pump 9 can stably draw water from the water storage tank 11, transport it through the pipes to the top of the water curtain plate 8 to form a complete water curtain, and transport it to the spray pipe 10 to further spray and settle the exhaust gas, effectively capturing paint mist in the spray booth; and the structure is simple and the pipeline is compact, which can reduce the risk of water leakage and facilitate system inspection and maintenance.

[0043] See Figure 1 and Figure 2 In this embodiment, a liquid level sensor (not shown in the figure) is installed in the water storage tank 11. The liquid level sensor is electrically connected to the water curtain pump 9. When the liquid level in the water storage tank 11 is lower than a preset value, the water curtain pump 9 is triggered to stop running. The liquid level sensor is linked to the water curtain pump 9. When the liquid level is lower than the preset value, the water curtain pump 9 is automatically stopped. This can not only avoid the water curtain pump 9 from running dry and being damaged, thus extending the life of the water curtain pump 9, but also prevent the water curtain pump 9 from being interrupted due to lack of water and the paint mist from being unable to be effectively purified, thus ensuring the environmentally friendly operation of the spray booth.

[0044] See Figure 1 , Figure 2 and Figure 6 In this embodiment, an air supply duct 18 is connected to the top of the static pressure air supply ceiling 4. A filter assembly 19 is connected to the end of the air supply duct 18 away from the static pressure air supply ceiling 4. An exhaust fan 32 is provided at the port of the air supply duct 18 near the filter assembly 19. The filter assembly 19 contains, in sequence, an F8 medium-efficiency filter bag 20, an F5 medium-efficiency filter bag 21, a G4 primary filter 22, a wet curtain paper 23, and louvers 24. The exhaust fan 32 can drive airflow through the air supply duct 18 to the static pressure air supply ceiling 4. The F8 medium-efficiency filter bag 20, the F5 medium-efficiency filter bag 21, and the G4 primary filter 22 in the filter assembly 19 can filter out impurities in the air layer by layer. The wet curtain paper 23 assists in humidity adjustment, and the louvers 24 regulate the airflow. This ensures the cleanliness of the air entering the spray booth, avoids contamination of the coating, stabilizes the air supply, and optimizes the spraying environment.

[0045] See Figure 1 and Figure 2In this embodiment, the filter assembly 19 is mounted on an elevated steel platform 25, and a staircase 26 is provided on one side of the steel platform 25. Safety railings 27 are provided at the edges of the steel platform 25. The placement of the filter assembly 19 on the elevated steel platform 25 saves ground space and avoids interference with other equipment in the spray booth. The staircase 26 on the steel platform 25 facilitates personnel access for maintenance of the filter assembly 19, and the safety railings 27 at the edges prevent the risk of personnel falling, thus balancing space utilization and operational safety.

[0046] See Figure 1 and Figure 2 In this embodiment, the water storage tank 11 is located at the bottom of the inner conveyor chain mechanism 12. The water storage tank 11 is equipped with a collection ramp 28 for receiving sprayed materials or impurities. The collection ramp 28 has a discharge trough 29. The bottom surface of the water storage tank 11 corresponding to the discharge trough 29 has an inclined surface 30. The water curtain pump 9 is installed at the lowest point of the inclined surface 30. The water storage tank 11 is located at the bottom of the conveyor chain and can receive sprayed waste nearby. The collection ramp 28, together with the discharge trough 29, can collect waste. The inclined bottom surface guides the water to flow to the lowest point, which facilitates the stable water intake of the water curtain pump 9. This not only improves the waste collection efficiency but also ensures the stable water supply of the pump and reduces equipment failure.

[0047] See Figure 1 and Figure 2 In this embodiment, the inlet end of the exhaust gas extraction pipe 7 is equipped with an exhaust fan (not shown in the figure). The exhaust fan can enhance the negative pressure suction in the exhaust gas extraction pipe 7, accelerate the intake of paint mist that is not intercepted by the water curtain in the spray booth body 1 into the pipe and transport it to the exhaust gas treatment center, thereby improving the paint mist discharge efficiency. At the same time, it can maintain the stable airflow direction in the spray booth body 1, avoid paint mist from lingering and spreading in the spray booth, and further ensure the cleanliness of the spraying environment and the health of the operators.

[0048] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In one embodiment of this invention: a conveying device is also provided, including a conveyor chain mechanism 12 and a detachable support assembly 13; The conveyor chain mechanism 12 is a stainless steel mesh belt conveyor chain that runs through the inlet and outlet of the main body 1 of the spray booth and is used to convey stator laminations. The detachable support assembly 13 includes a fixed member 14 and a movable support member 15. The fixed member 14 is fixedly installed on the chain link of the conveyor chain mechanism 12. The movable support member 15 is fixed to the fixed member 14 by a combination of nuts and buckles. The surface of the movable support member 15 is provided with a triangular support structure 16 for supporting the stator slot plates. The inner and outer sides of the movable support member 15 are both brushed surfaces, and a ø15mm through drainage hole 17 is also provided on it.

[0049] In use, the stator slot pieces are placed on the detachable support component 13 of the conveyor chain mechanism 12 (stainless steel mesh belt conveyor chain), and are stably supported by the triangular support structure 16 on the surface of the movable support component 15. Then, the conveyor chain mechanism 12 starts, carrying the stator slot pieces through the inlet and outlet of the spray booth body 1, and accurately conveying them to the spraying area. During the spraying process, the brushed surface of the movable support component 15 can reduce paint adhesion, and the ø15mm through-hole drainage hole 17 can drain residual paint or condensate in time, avoiding paint accumulation and contamination of the stator slot pieces. When the movable support component 15 needs maintenance or replacement, it can be removed from the fixed component 14 simply by disassembling the nut and buckle. The operation is convenient and does not affect the overall operation of the conveyor chain mechanism 12.

[0050] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The apex angle of the triangular support structure 16 is 60° to 90°, and two adjacent movable support members 15 are spaced apart on the conveyor chain mechanism 12. The angle setting enables the triangular support structure 16 to reduce the contact area while stably supporting the stator slot, thereby reducing the risk of paint contamination of the workpiece. The spaced distribution of adjacent movable support members 15 can accommodate slots of different sizes, ensuring the stability of the conveying process.

[0051] The fastener 14 is made of stainless steel, and the movable support 15 is made of aluminum alloy. Both are coated with an anti-stick coating (not shown in the figure). The stainless steel fastener 14 is corrosion-resistant and durable, while the aluminum alloy movable support 15 is lightweight and easy to disassemble. The anti-stick coating reduces paint adhesion, which reduces pollution and facilitates replacement, ensuring the stable application of the detachable support assembly 13.

[0052] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In one embodiment of this invention, a generator stator lamination coating control method is also provided, based on a coating spray booth and a conveying device, comprising the following steps: Step 1: Preset the pulse signal threshold of the encoder (not shown in the figure) of the conveyor chain mechanism 12 from the inlet of the spray booth body 1 to the spraying position inside the spray booth body 1. The encoder is fixed on the drive shaft (not shown in the figure) of the conveyor chain mechanism 12. Step 2: When the stator laminations pass through the inlet of the spray booth body 1, the photoelectric sensor at the inlet (not shown in the figure) is triggered. The photoelectric sensor generates a signal according to the contact disconnection logic and transmits it to the control unit (not shown in the figure). Step 3: After receiving the signal, the control unit starts the encoder to record the pulse signal of the conveyor chain mechanism 12 movement and feeds it back to the control unit in real time. Step four: When the pulse signal reaches the preset threshold, the control unit stops the conveyor chain mechanism 12 from moving and simultaneously starts the painting robot 2 to paint the stator slots.

[0053] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In step S4, after the painting robot 2 completes the painting operation, the distance between two adjacent workpieces on the conveyor chain mechanism 12 is adjusted by a preset threshold. The adjustment range of the distance between two adjacent workpieces is 300mm to 1200mm. By adjusting the workpiece distance, the workpieces can maintain a sufficient distance to prevent mutual contamination during painting. The production cycle can also be adjusted by adjusting different distances to meet the production capacity requirements.

[0054] The photoelectric sensor is a through-beam photoelectric sensor with an adjustable sensing distance of 50mm to 300mm. Through-beam photoelectric sensors provide accurate sensing and can avoid false triggering caused by paint mist interference in the spraying environment. The adjustable sensing distance of 50mm to 300mm can adapt to the detection needs of stator slots of different sizes, improving the adaptability of positioning control.

[0055] The control unit is also equipped with a fault alarm module (not shown in the figure). When the error of the encoder's pulse signal feedback exceeds 5% for three consecutive times, the fault alarm module will issue an audible and visual alarm. The fault alarm module can monitor the encoder pulse signal error in real time. When the error exceeds 5% for three consecutive times, an audible and visual alarm will be triggered. This can detect abnormalities in conveying and positioning in a timely manner, avoid misalignment of coating due to positioning deviation, reduce workpiece scrap, and ensure the stable operation of the production line.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A generator stator slot coating spray booth, characterized in that: It includes the main body of the spray booth (1), the spraying robot (2), the automatic paint supply equipment and the ventilation and purification components (3); The main body of the spray booth (1) is provided with an inlet and outlet for the stator laminations to enter and exit; The spraying robot (2) is located inside the spray booth body (1) and is connected to the automatic paint supply equipment to obtain the coating paint; The ventilation and purification component (3) includes a static pressure air supply ceiling (4), an H13 high-efficiency filter (5), a water curtain structure (6), and an exhaust gas extraction pipe (7). The static pressure air supply ceiling (4) and the H13 high-efficiency filter (5) are respectively installed on the top of the spray booth body (1). The water curtain structure (6) has a water curtain plate (8), a water curtain pump (9), a spray pipe (10) and a water storage tank (11). The water curtain plate (8) is located inside the spray booth body (1) near the spraying area. One end of the exhaust gas extraction pipe (7) is connected to the interior of the spray booth body (1) and is located at the top of the spray pipe (10). The other end of the exhaust gas extraction pipe (7) is connected to the exhaust gas treatment center.

2. The generator stator slot coating spray booth according to claim 1, characterized in that: The main body (1) of the spray booth is provided with a cleaning water tank (31) on the outside of the discharge end. The cleaning water tank (31) is located below the line of the conveyor chain mechanism (12). The conveyor chain mechanism (12) corresponding to the cleaning water tank (31) is sunken and located below the water level of the cleaning water tank (31).

3. The generator stator slot coating spray booth according to claim 1, characterized in that: The outlet of the water curtain pump (9) is connected to the water curtain plate (8) and the spray pipe (10) through pipes respectively.

4. A conveying device, characterized in that: Includes a conveyor chain mechanism (12) and a detachable support assembly (13); The conveyor chain mechanism (12) is a stainless steel mesh belt conveyor chain, and it passes through the inlet and outlet of the spray booth body (1) as described in claim 1; The detachable support assembly (13) includes a fixed part (14) and a movable support part (15). The fixed part (14) is fixedly installed on the chain link of the conveyor chain mechanism (12). The movable support part (15) is fixed to the fixed part (14) by a combination of nuts and buckles. The surface of the movable support part (15) is provided with a triangular support structure (16) for supporting the stator slot laminations. The inner and outer sides of the movable support part (15) are both brushed surfaces, and a through drainage hole (17) is also provided on it.

5. A conveying device according to claim 4, characterized in that: The apex angle of the triangular support structure (16) is 60° to 90°, and two adjacent movable support members (15) are spaced apart on the conveyor chain mechanism (12).

6. A conveying device according to claim 4, characterized in that: The fixing component (14) is made of stainless steel, and the movable support component (15) is made of aluminum alloy and has an anti-stick coating on its surface.

7. A method for controlling the coating of generator stator laminations, characterized in that, Based on the coating spray booth of claim 1 and the conveying device of claim 4, the process includes the following steps: Step 1: Preset the encoder pulse signal threshold of the conveyor chain mechanism (12) from the inlet of the spray booth body (1) to the spraying position inside the spray booth body (1), and fix the encoder on the drive shaft of the conveyor chain mechanism (12); Step 2: When the stator slot passes through the inlet of the spray booth body (1), the photoelectric sensor at the inlet is triggered. The photoelectric sensor generates a signal according to the contact disconnection logic and transmits it to the control unit. Step 3: After receiving the signal, the control unit starts the encoder to record the pulse signal of the conveyor chain mechanism (12) movement and feeds it back to the control unit in real time; Step 4: When the pulse signal reaches the preset threshold, the control unit stops the movement of the conveyor chain mechanism (12) and starts the painting robot (2) to paint the stator slot.

8. The generator stator lamination coating control method according to claim 7, characterized in that: In step S4, after the painting robot completes the painting operation, the distance between two adjacent workpieces on the conveyor chain mechanism is adjusted by a preset threshold. The adjustment range of the distance between two adjacent workpieces is 300mm to 1200mm.

9. The generator stator lamination coating control method according to claim 7, characterized in that: The photoelectric sensor is a through-beam photoelectric sensor, and its sensing distance is adjustable from 50mm to 300mm.

10. The generator stator lamination coating control method according to claim 7, characterized in that: The control unit is also equipped with a fault alarm module. When the error of the pulse signal fed back by the encoder exceeds 5% for three consecutive times, the fault alarm module will issue an audible and visual alarm.

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