Generator stator punching sheet painting equipment and technology

Abstract

The invention relates to the technical field of stator punching sheet painting, and particularly discloses a generator stator punching sheet painting device and process. A conveying mechanism; the painting mechanism comprises a painting roller, a paint uniformizing roller and a scraper, the painting roller is a rubber roller, and the paint uniformizing roller is a stainless steel roller; the paint feeding mechanism comprises a paint storage box, a pump body, a paint feeding pipe and a connecting pipe; the exhaust mechanism comprises a fan, a heating piece, a first branch pipe and a second branch pipe, the first branch pipe is arranged on the outer side of the connecting pipe in a sleeving mode, a first exhaust pipe is arranged on the first branch pipe, a second exhaust pipe is arranged on the second branch pipe, and the fan, the first branch pipe and the second branch pipe are sequentially connected. According to the painting device, the first exhaust pipe blows air outwards, so that paint on the painting roller can be distributed more uniformly; the second exhaust pipe blows air outwards, so that the paint is not easy to accumulate at the scraper; the blown air is hot air, so that the flowability of the paint can be enhanced; therefore, the uniformity of the thickness of the paint film on the painting roller can be ensured, and the painting effect is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of stator punching plate painting, and in particular to a generator stator punching plate painting device and process. Background Art

[0002] The stator core of the motor is made of stacked stator laminations. The stator laminations are key components in the motor. Their materials, inner circle dimensions, outer circle dimensions, slot size, etc. have a direct impact on the energy consumption, working efficiency, noise and service life of the motor. Therefore, in order to reduce the eddy current loss of the motor stator laminations, it is necessary to coat the surface with paint to protect the lamination material from corrosion and play a certain role in insulation protection, thereby reducing the eddy current loss of the motor stator laminations.

[0003] The stator laminations are usually painted by immersion painting, that is, during the painting process, the upper and lower paint rollers are completely soaked in paint, and when the stator lamination passes between the two paint rollers, the paint is applied on both sides of the stator lamination. This method can only be used for organic paints with strong fluidity, which have less inorganic components and strong fluidity. When inorganic water-soluble paints are used, since the main components of water-soluble inorganic paints are solid inorganic substances with poor fluidity, the high viscosity and low fluidity of inorganic paints make it difficult to form a smooth coating after dipping, and defects such as orange peel and flow marks are prone to occur, thus affecting the painting effect. Summary of the invention

[0004] In order to facilitate the application of water-soluble inorganic paint on stator punchings, the present application provides a generator stator punching painting device and process.

[0005] In a first aspect, the present application provides a generator stator punching painting device, which adopts the following technical solution: A generator stator punching sheet painting device comprises a housing and a conveying mechanism arranged on the housing, comprising a feeding assembly and a discharging assembly for conveying the stator punching sheet; The painting mechanism comprises a paint roller, a paint leveling roller and a scraper, wherein the paint roller is a rubber roller, the paint leveling roller is a stainless steel roller, two paint rollers and two paint leveling rollers are provided, and the scraper is pressed against the paint roller and the paint leveling roller; The paint feeding mechanism comprises a paint storage box, a pump body, a paint feeding pipe and a connecting pipe which are connected in sequence, wherein the connecting pipe is arranged along the axis direction of the paint roller, and a plurality of drainage pipes are arranged on the connecting pipe, and the openings of the drainage pipes face the gap between the paint roller and the paint leveling roller; The exhaust mechanism includes a fan, a heating element, a first branch pipe and a second branch pipe, wherein the first branch pipe is sleeved on the outer side of the connecting pipe, a cavity is provided between the first branch pipe and the connecting pipe, a first exhaust pipe is provided on the first branch pipe, the opening of the first exhaust pipe faces the gap between the paint roller and the paint leveling roller, the second branch pipe is arranged along the length direction of the scraper, a second exhaust pipe is provided on the second branch pipe, the opening of the second exhaust pipe faces the gap between the scraper and the paint roller, the fan, the first branch pipe and the second branch pipe are connected in sequence, and the heating element is provided on the air outlet side of the fan so that the fan discharges hot air to the outside through the first exhaust pipe and the second exhaust pipe.

[0006] By adopting the above technical scheme, two paint rollers paint both sides of the stator punching sheet at the same time, thereby improving the painting efficiency; the paint leveling roller is used to scrape off excess paint on the paint roller, ensure that the paint film thickness on the surface of the paint roller is uniform, and reduce coating defects; the first branch pipe and the first exhaust pipe can blow air into the gap between the paint roller and the paint leveling roller, so that the fallen paint can flow along the axis direction of the paint roller, thereby achieving uniform distribution of the fallen paint, and the paint can be more evenly coated on the paint roller; the second branch pipe and the second exhaust pipe can blow air into the gap between the scraper and the paint roller, accelerate the flow of paint at the scraper to both ends, thereby reducing the paint accumulated at the scraper, and ensuring the scraping effect of the scraper; because the incoming wind is hot air, the fallen paint can be heated, thereby improving the fluidity of the inorganic water-soluble paint, which helps to ensure the uniform application of subsequent paint.

[0007] Optionally, a plurality of the second exhaust pipes are provided, the second exhaust pipes are arranged at intervals along the length direction of the second branch pipe, the second exhaust pipes are arranged at an angle, and the opening directions of the second exhaust pipes at both ends of the second branch pipe are facing away from each other.

[0008] By adopting the above technical solution, the inclined second exhaust pipe can enhance the guiding effect of the paint at the scraper, so that the paint scraped off by the scraper can flow to both ends faster, thereby reducing the paint accumulated at the scraper.

[0009] Optionally, the feeding assembly includes a conveying roller and a first driving member, the conveying roller is provided with a cavity inside, and both ends of the conveying roller are rotatably connected with a rotating joint, one of the rotating joints is connected to the inside of the first branch pipe, and the other rotating joint is connected to the inside of the second branch pipe, and the first driving member is used to drive the conveying roller to rotate.

[0010] By adopting the above technical scheme, the conveying roller can be used to convey the stator punching sheet; after the hot air in the first branch pipe flows into the cavity inside the conveying roller, the conveying roller can be heated up, and the heated conveying roller can preheat the stator punching sheet to be painted, reduce the temperature difference between the stator punching sheet and the paint, thereby reducing the stress caused by thermal expansion and contraction, and helping to improve the bonding strength between the paint and the stator punching sheet; in addition, preheating can also remove moisture and condensate on the surface of the stator punching sheet, further enhancing the adhesion of the paint; after the hot air heats up the conveying roller, the temperature of the hot air is reduced, so the temperature of the wind discharged through the second branch pipe and the second exhaust pipe is lower, which helps to reduce the temperature rise of the scraper. The curing speed of the paint increases with the increase in temperature, so reducing the temperature rise can avoid the temperature of the scraper being too high, which causes the paint attached to the scraper to solidify, thereby ensuring the use effect of the scraper.

[0011] Optionally, a water inlet pipe is provided on the paint inlet pipe, the water inlet pipe is connected to a water source, and a valve body is provided on the water inlet pipe.

[0012] By adopting the above-mentioned technical scheme, clean water or cleaning liquid can be introduced into the paint inlet pipe, and then the clean water or cleaning liquid can be discharged through the drain pipe on the connecting pipe, so as to spray the surface of the paint roller and the paint leveling roller, wash off the paint on the paint roller and the paint leveling roller, and achieve cleaning; the clean water or cleaning liquid flowing into the paint inlet pipe and the connecting pipe can also wash off the paint attached to the inner wall of the paint inlet pipe and the connecting pipe, so as to avoid the continuous accumulation and solidification of the paint on the inner wall, which affects the flow of the paint; the paint inlet pipe and the connecting pipe in the present application can not only allow the paint to flow, but also allow the introduction of clean water or cleaning liquid for cleaning, which helps to simplify the structure.

[0013] Optionally, a mounting hole is provided on the connecting pipe, a block is slidably provided in the mounting hole, a spring is connected between the block and the connecting pipe, the spring makes the block press against the inner wall of the mounting hole, a water pipe is provided between the first branch pipe and the second branch pipe, a three-way valve is provided between the first branch pipe and the water pipe, and the three-way valve is respectively connected to the first branch pipe, the water pipe and a rotating joint near one end of the first branch pipe.

[0014] By adopting the above technical solution, the water pressure can be increased during spray cleaning, and the water pressure can make the block slide out of the mounting hole to open the mounting hole. At this time, the clean water in the connecting pipe can flow into the first branch pipe, and then flow into the second branch pipe through the water pipe, and then be discharged through the second exhaust pipe on the second branch pipe, spraying the scraper to wash off the paint attached to the scraper, thereby achieving spray cleaning of the scraper; the setting of the three-way valve can adjust the connection state of the first branch pipe. During painting, the three-way valve connects the first branch pipe with the rotary joint at the end of the conveying roller, so that hot air can be conveyed to the conveying roller; during cleaning, the three-way valve connects the first branch pipe with the water pipe, so that the clean water in the first branch pipe can flow into the second branch pipe through the water pipe.

[0015] Optionally, a one-way valve is connected to the rotary joint close to the second branch pipe.

[0016] By adopting the above technical solution, the one-way valve can prevent the clean water in the second branch pipe from flowing into the conveying roller, thereby ensuring the normal operation of the conveying roller.

[0017] Optionally, the discharging assembly includes a rotating rod and a second driving member, the rotating rod is rotatably connected to the shell, a plurality of tooth rollers are coaxially arranged on the rotating rod, the top side of the tooth rollers is used to receive the bottom wall of the stator punching sheet, and the second driving member is used to drive the rotating rod to rotate.

[0018] By adopting the above technical solution, the rotating gear roller can convey the stator punching sheet after painting; because the linear speed of the tooth top of the gear roller is the same as the moving speed of the stator punching sheet, and the contact area between the gear roller and the stator punching sheet is small, the paint layer on the lower surface of the stator punching sheet is not easily damaged during the conveying process, which helps to ensure the painting effect.

[0019] Optionally, a water tank is provided on the shell below the rotating rod, and the gear roller is located in the water tank.

[0020] By adopting the above technical solution, the water tank can be used to clean the gear roller, prevent paint from accumulating on the gear roller, and reduce equipment maintenance costs.

[0021] Optionally, a receiving pan for receiving fallen paint is provided on the shell.

[0022] By adopting the above technical solution, the receiving tray can collect the paint that falls during the painting process, reduce paint waste, and reduce production costs; it can also prevent paint dripping from contaminating equipment and the working environment, and improve the cleanliness and service life of the equipment.

[0023] In a second aspect, the present application provides a process, which adopts the following technical solution: A treatment method, using any of the above-mentioned generator stator punching painting equipment, comprises the following steps: a. The pump body transports the paint to the connecting pipe, and the paint in the connecting pipe is discharged through the drain pipe and falls into the gap between the paint roller and the paint leveling roller; b. The paint roller and the paint leveling roller rotate in the same direction, and the paint leveling roller scrapes off the excess paint on the paint roller, so that a paint film is formed on the surface of the paint roller. The scraped paint adheres to the paint leveling roller and is then scraped off by the scraper; c. The feeding assembly feeds the stator punching sheet into between two paint rollers; d. The two paint rollers rotate in opposite directions, the paint film on the surface of the upper paint roller is applied to the upper surface of the stator punching sheet, and the paint film on the surface of the lower paint roller is applied to the lower surface of the stator punching sheet; e. Use a scraper to scrape off the paint on the paint roller; f. The discharging assembly transports the stator punching sheets to the next process.

[0024] By adopting the above technical solution, the paint roller and the paint leveling roller cooperate with each other to achieve uniform painting of the stator punching sheets, which helps to improve the painting efficiency and quality.

[0025] In summary, this application includes the following beneficial technical effects: 1. The paint roller is a rubber roller. The elasticity of the rubber roller enables it to better adapt to the unevenness of the surface of the stator punching sheet. Even if the fluidity of the paint is poor, it can achieve more uniform coating through the deformation and pressure distribution of the roller body, thereby facilitating the uniform coating of the water-soluble inorganic paint on the stator punching sheet.

[0026] 2. The first branch pipe and the first exhaust pipe blow air outwards, which can make the paint between the paint roller and the paint leveling roller more evenly distributed, helping to ensure the uniformity of the paint film thickness on the surface of the paint roller; the second branch pipe and the second exhaust pipe blow air outwards, which can accelerate the flow of paint between the scraper and the paint roller to both ends, making it difficult for the paint to accumulate on the scraper, helping to ensure the scraping effect of the scraper.

[0027] 3. The wind blown out from the first branch pipe and the first exhaust pipe is hot air, which can enhance the fluidity of the paint and help the paint flow smoothly; the wind blown out from the second branch pipe and the second exhaust pipe is cooled and has a lower temperature, so it is not easy to make the scraper temperature too high and cause the paint on the scraper surface to solidify.

[0028] 4. After the hot air in the first branch pipe flows into the conveying roller, the temperature of the conveying roller can be increased. The conveying roller can preheat the stator punching sheet, thereby reducing the temperature difference between the stator punching sheet and the paint, which helps to ensure the paint application effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a cross-sectional view of an embodiment of the present application; Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 It is a schematic diagram used to show the connection relationship between the pipelines in the embodiment of the present application; Figure 5 is a cross-sectional view from another perspective of the embodiment of the present application; Figure 6 yes Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 is a structural schematic diagram of an embodiment of the present application for showing the position of the second branch pipe; Figure 8 yes Figure 7 The enlarged schematic diagram of the center C; Fig. 9 yes Figure 5 Enlarged schematic diagram of point D in the middle.

[0030] Figure numerals: 1, shell; 2, feed assembly; 21, conveying roller; 211, rotary joint; 3, discharge assembly; 31, rotating rod; 311, gear roller; 4, painting mechanism; 41, paint roller; 42, paint roller; 43, scraper; 5, paint feeding mechanism; 51, paint storage box; 52, paint feeding pipe; 53, connecting pipe; 531, drain pipe; 532, mounting hole; 533, limit rod; 6, exhaust mechanism; 61, the first A branch pipe; 611, horizontal pipe; 6111, first exhaust pipe; 612, vertical pipe; 62, second branch pipe; 621, second exhaust pipe; 63, fan; 64, heating element; 7, water inlet pipe; 71, valve body; 8, stopper; 81, connecting block; 9, spring; 10, water pipe; 11, three-way valve; 12, one-way valve; 13, air inlet pipe; 14, water tank; 15, receiving plate; 16, water tank; 17, stator punching sheet. DETAILED DESCRIPTION

[0031] The following combination Figure 1-Figure 9 This application is described in further detail.

[0032] The present application embodiment discloses a generator stator punching plate painting device. Figure 1 and Figure 2 The generator stator punching and painting equipment comprises a housing 1 and a conveying mechanism, a painting mechanism 4 and a paint feeding mechanism 5 arranged on the housing 1 .

[0033] Reference Figure 2The conveying mechanism includes a feed assembly 2 and a discharge assembly 3, which are respectively located on both sides of the housing 1. The feed assembly 2 includes a conveying roller 21 and a first driving member. The conveying roller 21 is provided with a plurality of rollers and is evenly spaced. Both ends of the conveying roller 21 are rotatably connected to the side wall of the housing 1. The first driving member includes a motor, a sprocket and a transmission chain. The first driving member is connected to the conveying roller 21 in a transmission manner, so that the first driving member drives the conveying roller 21 to operate, and the conveying roller 21 can drive the stator punching sheet 17 on the top surface to move, thereby conveying the stator punching sheet 17 to the painting station.

[0034] The discharging assembly 3 includes a rotating rod 31 and a second driving member. The rotating rod 31 is parallel to the conveying roller 21. There are multiple rotating rods 31 arranged evenly at intervals. Both ends of the rotating rod 31 are rotatably connected to the side wall of the shell 1. Each rotating rod 31 is coaxially fixedly connected with a toothed roller 311. There are multiple toothed rollers 311 arranged evenly at intervals along the length direction of the rotating rod 31. The toothed roller 311 is a circular sheet structure with a tooth structure. The second driving member includes a motor, a sprocket and a transmission chain. The second driving member is connected to the rotating rod 31 in a transmission manner. Therefore, the second driving member drives the rotating rod 31 to rotate, which can make the toothed roller 311 rotate. The toothed roller 311 can drive the stator punching 17 on the top surface to move, so that the painted stator punching 17 is transported to the subsequent baking device.

[0035] Furthermore, a water tank 14 is fixedly connected to the housing 1, and the number of the water tanks 14 is the same as the number of the rotating rods 31, each water tank 14 corresponds to a rotating rod 31, and the water tank 14 is located below the corresponding rotating rod 31. The water tank 14 is filled with water, and the bottom end of the gear roller 311 is immersed in the water in the water tank 14, so as the gear roller 311 rotates, the water-soluble paint adhered to the gear roller 311 can be dissolved into the water in the water tank 14, thereby cleaning the gear roller 311 and preventing the paint adhered to the gear roller 311 from causing adverse effects on the stator punching 17 after painting.

[0036] Reference Figure 2 The painting mechanism 4 includes a paint roller 41, a paint leveling roller 42 and a scraper 43. The paint roller 41 is a rubber roller, and the paint leveling roller 42 is a stainless steel roller. The elasticity of the rubber roller enables it to better adapt to the unevenness of the surface of the stator punching sheet 17. Even if the fluidity of the paint is poor, it can achieve more uniform coating through the deformation and pressure distribution of the roller body. There are two paint rollers 41, which are arranged up and down; both ends of the paint roller 41 are rotatably connected to the side wall of the housing 1. After the stator punching sheet 17 passes between the two paint rollers 41, the paint film on the paint roller 41 can be transferred to the upper and lower sides of the stator punching sheet 17.

[0037] There are two paint leveling rollers 42, and each paint leveling roller 42 corresponds to a paint roller 41. The paint leveling rollers 42 are arranged at intervals on one side of the paint roller 41, and both ends of the paint leveling rollers 42 are rotatably connected to the side wall of the housing 1. The paint leveling rollers 42 and the corresponding paint rollers 41 rotate in the same direction, so the linear speeds of the paint leveling rollers 42 and the paint rollers 41 at the edges close to each other are in opposite directions. When the paint leveling rollers 42 rotate, the excess paint on the paint rollers 41 can be scraped off, so that a paint film with a specific thickness is formed on the paint rollers 41, and then this paint film is applied to the stator punching sheets 17 to ensure the uniformity of the paint.

[0038] Four scrapers 43 are provided, and each paint roller 41 and each paint leveling roller 42 correspond to one scraper 43. Both ends of the scraper 43 are rotatably connected to the side wall of the housing 1. Under normal conditions, the tip of the scraper 43 abuts against the corresponding paint roller 41 or paint leveling roller 42, so that the scraper 43 can scrape off the excess paint on the paint roller 41 or paint leveling roller 42, and the scraped paint falls from both ends of the scraper 43 along the length direction of the scraper 43. The housing 1 is provided with a motor for driving the scraper 43 to rotate. In the standby state, the paint roller 41 and the paint leveling roller 42 are spaced apart from the scraper 43. At this time, the paint roller 41 and the paint leveling roller 42 continue to rotate, so that the paint on the surface of the paint roller 41 and the paint leveling roller 42 is in a moving state, and the paint is not easy to solidify. In addition, the wear of the scraper 43 on the paint roller 41 and the paint leveling roller 42 can be reduced in the standby state, thereby ensuring the service life of the equipment.

[0039] The shell 1 is provided with a reduction motor for driving the paint roller 41 and the paint leveling roller 42 to rotate, so that the rotation speed of each paint roller 41 and the paint leveling roller 42 can be adjusted as needed; by adjusting the rotation speed difference between the paint leveling roller 42 and the paint roller 41, the thickness of the paint film on the surface of the paint roller 41 can be adjusted, and the greater the rotation speed difference, the thinner the paint film formed on the paint roller 41.

[0040] The housing 1 includes an upper housing and a lower housing, and the upper housing is vertically slidably connected to the lower housing. The upper paint roller 41 and the paint leveling roller 42 are both rotatably connected to the upper housing, and the corresponding reduction motor is also arranged on the upper housing; a cylinder is arranged on the lower housing, and the cylinder is arranged vertically, and the piston rod end of the cylinder is fixedly connected to the upper housing. Therefore, the upper paint roller 41 and the paint leveling roller 42 can be driven by the cylinder to move up a certain distance, and the equipment is idle and in standby state.

[0041] The housing 1 is also fixedly connected with a receiving tray 15 , and the painting mechanism 4 is located above the receiving tray 15 , so that excess paint can fall into the receiving tray 15 , thereby avoiding waste of paint.

[0042] Reference Figure 3 and Figure 4, the paint feeding mechanism 5 is provided with two groups, and corresponds to the upper and lower paint rollers 41 respectively. Taking the paint feeding mechanism 5 corresponding to the upper paint roller 41 as an example, the paint feeding mechanism 5 includes a paint storage box 51, a pump body, a paint feeding pipe 52 and a connecting pipe 53. The paint storage box 51 is fixedly connected to the shell 1, and the paint storage box 51 is filled with paint; the pump body is fixedly connected to the paint storage box 51, the input end of the pump body is connected to the inside of the paint storage box 51, and the output end of the pump body is connected to the paint feeding pipe 52. One end of the paint feeding pipe 52 away from the pump body extends to the gap between the paint roller 41 and the paint leveling roller 42. The connecting pipe 53 is fixedly connected to the end of the paint feeding pipe 52, and the connecting pipe 53 is arranged along the axial direction of the paint roller 41. Both ends of the connecting pipe 53 are closed, and the connecting pipe 53 is connected to the paint inlet pipe 52; a plurality of drain pipes 531 are evenly spaced along the length direction of the connecting pipe 53, and the opening of the drain pipe 531 faces the gap between the paint roller 41 and the paint leveling roller 42. Therefore, after the pump body is started, the paint in the paint storage box 51 can flow into the connecting pipe 53 through the paint inlet pipe 52, and then be discharged through the drain pipe 531. Since a plurality of drain pipes 531 are provided, the paint can flow into the gap between the paint roller 41 and the paint leveling roller 42 more evenly, which helps to ensure the uniformity of the paint film on the paint roller 41.

[0043] Reference Figure 4 , Figure 5 and Figure 6 , an exhaust mechanism 6 is also provided in the shell 1, and the exhaust mechanism 6 is provided with two groups, and corresponds to the upper and lower paint rollers 41 respectively. Taking the exhaust mechanism 6 corresponding to the upper paint roller 41 as an example, the exhaust mechanism 6 includes a fan 63, a heating element 64, a first branch pipe 61 and a second branch pipe 62. The first branch pipe 61 is arranged in a T-shape, and the first branch pipe 61 is fixedly connected to the shell 1; the first branch pipe 61 includes a horizontal pipe 611 and a vertical pipe 612, and the vertical pipe 612 is vertically fixedly connected to the middle part of the horizontal pipe 611, and the vertical pipe 612 and the horizontal pipe 611 are internally connected. The vertical pipe 612 is coaxially sleeved on the outside of the paint inlet pipe 52, and the horizontal pipe 611 is coaxially sleeved on the outside of the connecting pipe 53. A cavity is formed between the inner wall of the vertical pipe 612 and the outer wall of the paint inlet pipe 52, and between the inner wall of the horizontal pipe 611 and the outer wall of the connecting pipe 53. The transverse tube 611 is fixedly connected with a first exhaust pipe 6111, and a plurality of first exhaust pipes 6111 are provided and evenly spaced along the length direction of the transverse tube 611. The opening of the first exhaust pipe 6111 faces the gap between the paint roller 41 and the paint leveling roller 42. Therefore, the paint in the gap between the paint roller 41 and the paint leveling roller 42 can be blown through the first exhaust pipe 6111, so that the paint flows along the axis direction of the paint roller 41, thereby further improving the uniformity of the paint.

[0044] Reference Figure 3 , two second branch pipes 62 are provided, and they correspond to the two scrapers 43 respectively. Figure 7 and Figure 8 , the second branch pipe 62 is arranged along the axis direction of the paint roller 41, and a second exhaust pipe 621 is fixedly connected to the second branch pipe 62. A plurality of second exhaust pipes 621 are arranged evenly spaced along the length direction of the second branch pipe 62, and the opening of the second exhaust pipe 621 faces the scraper 43. Therefore, the scraper 43 can be blown by the second exhaust pipe 621, so that the paint between the scraper 43 and the paint roller 41 can flow to the two ends of the scraper 43 more quickly, and then flow from the end of the scraper 43 to the receiving plate 15, so as to avoid the paint at the scraper 43 from accumulating and adhering to the scraper 43, affecting the scraping effect of the scraper 43. Further, the second exhaust pipe 621 is arranged in an inclined manner, and the inclination directions of the second exhaust pipes 621 at the two ends of the second branch pipe 62 are opposite, and the openings of the second exhaust pipes 621 at the two ends of the second branch pipe 62 face the side away from each other; thus, the paint at the scraper 43 can be blown to the two ends more quickly.

[0045] Reference Figure 4 The fan 63 is fixedly connected to the housing 1, and the vertical pipe 612 is provided with an air inlet pipe 13, and the air outlet side of the fan 63 is connected to the air inlet pipe 13; the heating element 64 is a heating wire, and the heating wire is arranged on the air outlet side of the fan 63, so that the wind blown out by the fan 63 can flow into the vertical pipe 612 and the horizontal pipe 611 after being heated by the heating wire, and then a part of the wind is discharged through the first exhaust pipe 6111 on the horizontal pipe 611. The two second branch pipes 62 are both connected to the horizontal pipe 611, so another part of the wind in the horizontal pipe 611 can flow into the second branch pipe 62, and then be discharged through the second exhaust pipe 621 on the second branch pipe 62. Since the transported wind is hot wind, the hot wind in the first branch pipe 61 can heat and raise the temperature of the paint in the paint inlet pipe 52 and the connecting pipe 53, thereby improving the fluidity of the paint, so that the paint can flow more smoothly and is not easy to be blocked.

[0046] Although hot air can improve the fluidity of the paint, it will also increase the curing speed of the paint. The hot air discharged through the first exhaust pipe 6111 blows the paint in the gap between the paint roller 41 and the paint leveling roller 42. After the paint here adheres to the paint roller 41 and the paint leveling roller 42, it will be smeared on the stator punching sheet 17 or scraped off by the scraper 43. Therefore, it is not easy for the hot air to cure the paint on the paint roller 41 and the paint leveling roller 42; and the second exhaust pipe 621 continues to blow hot air to the scraper 43, which will increase the temperature of the scraper 43 and easily accelerate the curing of the paint near the surface of the scraper 43. In order to weaken this effect, the hot air flowing from the cross pipe 611 into the second branch pipe 62 can be cooled.

[0047] Reference Figure 2 and Figure 4, two conveying rollers 21 near the paint roller 41 are provided with cavities inside, one of which is aligned with the exhaust mechanism 6 above, and the other conveying roller 21 corresponds to the exhaust mechanism 6 below. Rotary joints 211 are provided at both ends of the conveying roller 21, and the rotary joints 211 and the conveying roller 21 are rotatably connected. One of the rotary joints 211 is connected to the inside of the transverse pipe 611, and the other rotary joint 211 is connected to the inside of the second branch pipe 62. Therefore, a part of the hot air in the transverse pipe 611 is discharged through the first exhaust pipe 6111, and the other part of the hot air first flows into the cavity inside the conveying roller 21, so that the conveying roller 21 is heated up, and then the air in the conveying roller 21 flows into the second branch pipe 62, and then is discharged through the second exhaust pipe 621; therefore, when this part of the air flows through the conveying roller 21, part of the heat will be transferred to the conveying roller 21, so that the temperature of the hot air is reduced, so as to avoid the temperature of the scraper 43 being too high, which will accelerate the curing speed of the paint. After the conveying roller 21 is heated up, the stator punching sheet 17 can be preheated by the conveying roller 21 , thereby reducing the temperature difference between the stator punching sheet 17 and the paint, which helps to ensure the bonding strength between the paint and the stator punching sheet 17 .

[0048] Furthermore, a coiled tube may be provided between the conveying roller 21 and the second branch tube 62 , and a heat sink may be provided on the outer side of the coiled tube, thereby further enhancing the cooling effect on the hot air in the conveying roller 21 and reducing the temperature rise of the scraper 43 .

[0049] In order to facilitate the cleaning of the paint on the paint roller 41 and the paint leveling roller 42 after painting, a water inlet pipe 7 is fixedly connected to the paint inlet pipe 52. A water tank 16 is provided on one side of the housing 1, and the water inlet pipe 7 is connected to the water tank 16. A valve body 71 is provided on the water inlet pipe 7. A water pump is provided on the water tank 16, and the water inlet end of the water pump is connected to the inside of the water tank 16, and the water outlet end of the water pump is connected to the water inlet pipe 7. Therefore, after the valve body 71 is opened and the water pump is started, the water or cleaning liquid in the water tank 16 can flow into the paint inlet pipe 52 through the water inlet pipe 7, and the water in the paint inlet pipe 52 flows into the connecting pipe 53, and then is discharged through the drain pipe 531, so as to spray the gap between the paint roller 41 and the paint leveling roller 42; at this time, the paint roller 41 and the paint leveling roller 42 are in a state of continuous rotation, so the paint on the paint roller 41 and the paint leveling roller 42 can be washed away to prevent the paint from solidifying and affecting subsequent use.

[0050] Reference Fig. 9Further, a mounting hole 532 is provided at one end of the connecting pipe 53, and a stopper 8 is slidably provided in the mounting hole 532 along its own axial direction. The stopper 8 is in the shape of a truncated cone, and the inner wall of the mounting hole 532 is a truncated cone surface adapted to the stopper 8. A limiting rod 533 is fixedly connected to the outer wall of one end of the connecting pipe 53, and a connecting block 81 is fixedly connected to the stopper 8. A through hole is provided on the connecting block 81 for the limiting rod 533 to pass through, and the connecting block 81 is slidably penetrated in the limiting rod 533. A spring 9 is fixedly connected between the connecting block 81 and the end of the limiting rod 533, and the spring 9 makes the stopper 8 press against the inner wall of the mounting hole 532 to block the mounting hole 532. When the water pressure inside the connecting pipe 53 increases, the stopper 8 can slide to the outside of the mounting hole 532, and the mounting hole 532 is opened at this time, so that the water in the connecting pipe 53 can flow into the horizontal pipe 611 through the mounting hole 532.

[0051] Reference Figure 4 A water pipe 10 is also connected between the transverse pipe 611 and the second branch pipe 62. A three-way valve 11 is provided at one end of the water pipe 10 close to the transverse pipe 611, and the three-way valve 11 is provided with an inlet and two outlets. The inlet of the three-way valve 11 is connected to the interior of the transverse pipe 611, one of the outlets of the three-way valve 11 is connected to the rotary joint 211 at the end of the conveying roller 21, and the other outlet of the three-way valve 11 is connected to the water pipe 10. Therefore, during the painting process, the three-way valve 11 connects the cross pipe 611 with the rotary joint 211, and hot air can be introduced into the conveying roller 21 for heat exchange; when cleaning is required after the painting is completed, the three-way valve 11 connects the cross pipe 611 with the water pipe 10. At this time, the water in the connecting pipe 53 flows into the cross pipe 611 through the installation hole 532, and the water in the cross pipe 611 can flow into the second branch pipe 62 through the water pipe 10, and then be discharged through the second exhaust pipe 621, so as to rinse the scraper 43 and clean the scraper 43.

[0052] Furthermore, a one-way valve 12 is connected to the rotary joint 211 near the second branch pipe 62, and the flow direction of the fluid in the one-way valve 12 is from the conveying roller 21 to the second branch pipe 62, thereby preventing the water in the water pipe 10 from flowing into the cavity inside the conveying roller 21. A one-way valve 12 is also provided on the side of the vertical pipe 612 near the fan 63, and the flow direction of the fluid in the one-way valve 12 is from the fan 63 to the vertical pipe 612, thereby preventing the water in the vertical pipe 612 from flowing back into the fan 63.

[0053] The implementation principle of the generator stator punching painting equipment in the embodiment of the present application is: the paint flows into the connecting pipe 53 through the paint inlet pipe 52, and then is discharged outward through the drain pipe 531. The fallen paint flows into between the paint roller 41 and the paint leveling roller 42. As the paint roller 41 and the paint leveling roller 42 rotate, the paint can be evenly coated on the paint roller 41 to form a layer of paint film on the paint roller 41.

[0054] The stator punching sheet 17 to be painted is placed on the top surface of the conveying roller 21, and the conveying roller 21 drives the stator punching sheet 17 to move horizontally. When the stator punching sheet 17 passes between the two paint rollers 41, the paint film on the paint roller 41 is applied to the stator punching sheet 17. The painted stator punching sheet 17 is conveyed to the baking device by the rotating toothed roller 311.

[0055] During the continuous discharge of the paint, hot air is continuously introduced into the first branch pipe 61, so that the paint in the paint inlet pipe 52 and the connecting pipe 53 is heated up, thereby improving the fluidity of the paint; a part of the hot air in the first branch pipe 61 is discharged through the first exhaust pipe 6111, and blows the paint between the paint roller 41 and the paint leveling roller 42, so that the paint is more evenly distributed on the paint roller 41; another part of the hot air in the first branch pipe 61 flows into the cavity inside the conveying roller 21, and then flows into the second branch pipe 62, and then is discharged through the second exhaust pipe 621 on the second branch pipe 62, blowing the paint at the scraper 43, accelerating the flow of paint in the gap between the scraper 43 and the paint roller 41 to both ends, thereby reducing the paint accumulated at the scraper 43.

[0056] After the painting process is completed, the state of the three-way valve 11 is adjusted so that the transverse pipe 611 is connected to the water pipe 10. At this time, the valve body 71 is opened, and clean water is transported to the paint inlet pipe 52 through the water inlet pipe 7, and the clean water is discharged through the drain pipe 531 on the connecting pipe 53, spraying the rotating paint roller 41 and the paint leveling roller 42, and the paint on the paint roller 41 and the paint leveling roller 42 can be washed off; at the same time, due to the large water pressure in the connecting pipe 53, the block 8 can slide outward, the mounting hole 532 is opened, and the clean water in the connecting pipe 53 flows into the transverse pipe 611 through the mounting hole 532, and then flows into the second branch pipe 62 through the water pipe 10, and then discharged through the second exhaust pipe 621 on the second branch pipe 62, so as to spray the scraper 43 and wash off the paint on the scraper 43.

[0057] After the cleaning process is completed, the water supply is stopped, and the block 8 is pressed against the inner wall of the mounting hole 532 by the spring 9. The valve body 71 is closed, and the state of the three-way valve 11 is adjusted so that the horizontal pipe 611 and the rotary joint 211 at the end of the conveying roller 21 are connected.

[0058] This embodiment also discloses a process, comprising the following steps: Step a. The pump body transports the paint to the connecting pipe 53 . The paint in the connecting pipe 53 is discharged through the drain pipe 531 and falls into the gap between the paint roller 41 and the paint leveling roller 42 .

[0059] Step b: Hot air is introduced into the first branch pipe 61 to heat the paint in the paint inlet pipe 52 and the connecting pipe 53 to increase the fluidity of the paint.

[0060] Step c. The hot air in the first branch pipe 61 is discharged through the first exhaust pipe 6111 to blow the paint between the paint roller 41 and the paint leveling roller 42, so that the paint is distributed more evenly.

[0061] Step d. The paint roller 41 and the paint leveling roller 42 rotate in the same direction, and the paint leveling roller 42 scrapes off the excess paint on the paint roller 41 , so that a paint film is formed on the surface of the paint roller 41 . The scraped paint adheres to the paint leveling roller 42 and is then scraped off by the scraper 43 .

[0062] Step e. The feeding assembly 2 feeds the stator punching sheet 17 between the two paint rollers 41 .

[0063] Step f. The two paint rollers 41 rotate in opposite directions, the paint film on the surface of the upper paint roller 41 is coated on the upper surface of the stator punching sheet 17 , and the paint film on the surface of the lower paint roller 41 is coated on the lower surface of the stator punching sheet 17 .

[0064] Step g. The scraper 43 scrapes off the paint on the paint roller 41 .

[0065] Step h. The hot air in the first branch pipe 61 flows into the conveying roller 21, flows into the second branch pipe 62 after cooling, and then is discharged through the second exhaust pipe 621, accelerating the flow of paint between the scraper 43 and the paint roller 41 to both ends.

[0066] Step i. The discharging assembly 3 transports the stator punching sheet 17 to the next process.

[0067] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A generator stator punching and painting equipment, characterized in that: include: A housing (1) and a conveying mechanism arranged on the housing (1), comprising a feeding assembly (2) and a discharging assembly (3) for conveying stator punching sheets (17); A paint coating mechanism (4), comprising a paint coating roller (41), a paint leveling roller (42) and a scraper (43), wherein the paint coating roller (41) is a rubber roller, the paint leveling roller (42) is a stainless steel roller, two of each of the paint coating roller (41) and the paint leveling roller (42) are provided, and the scraper (43) is pressed against the paint coating roller (41) and the paint leveling roller (42); A paint feeding mechanism (5) comprising a paint storage box (51), a pump body, a paint feeding pipe (52) and a connecting pipe (53) which are connected in sequence, wherein the connecting pipe (53) is arranged along the axial direction of the paint roller (41), and a plurality of drainage pipes (531) are arranged on the connecting pipe (53), and the openings of the drainage pipes (531) face the gap between the paint roller (41) and the paint leveling roller (42); The exhaust mechanism (6) comprises a fan (63), a heating element (64), a first branch pipe (61) and a second branch pipe (62), wherein the first branch pipe (61) is sleeved on the outside of the connecting pipe (53), a cavity is provided between the first branch pipe (61) and the connecting pipe (53), a first exhaust pipe (6111) is provided on the first branch pipe (61), an opening of the first exhaust pipe (6111) faces a gap between the paint roller (41) and the paint leveling roller (42), and the second branch pipe (62) The second branch pipe (62) is arranged along the length direction of the scraper (43), and a second exhaust pipe (621) is arranged on the second branch pipe (62). The opening of the second exhaust pipe (621) faces the gap between the scraper (43) and the paint roller (41). The fan (63), the first branch pipe (61) and the second branch pipe (62) are connected in sequence. The heating element (64) is arranged on the air outlet side of the fan (63), so that the fan (63) discharges hot air to the outside through the first exhaust pipe (6111) and the second exhaust pipe (621).

2. The generator stator punching and painting equipment according to claim 1 is characterized in that: A plurality of second exhaust pipes (621) are provided, and the second exhaust pipes (621) are arranged at intervals along the length direction of the second branch pipe (62). The second exhaust pipes (621) are arranged obliquely, and the opening directions of the second exhaust pipes (621) at both ends of the second branch pipe (62) are oriented toward sides away from each other.

3. The generator stator punching and painting equipment according to claim 1 is characterized in that: The feeding assembly (2) comprises a conveying roller (21) and a first driving member, wherein a cavity is provided inside the conveying roller (21), and both ends of the conveying roller (21) are rotatably connected to rotary joints (211), wherein one of the rotary joints (211) is connected to the inside of a first branch pipe (61), and the other rotary joint (211) is connected to the inside of a second branch pipe (62), and the first driving member is used to drive the conveying roller (21) to rotate.

4. The generator stator punching sheet painting equipment according to claim 3 is characterized by: The paint inlet pipe (52) is provided with a water inlet pipe (7), the water inlet pipe (7) is connected to a water source, and a valve body (71) is provided on the water inlet pipe (7).

5. The generator stator punching sheet painting equipment according to claim 4 is characterized in that: The connecting pipe (53) is provided with a mounting hole (532), a stopper (8) is slidably provided in the mounting hole (532), a spring (9) is connected between the stopper (8) and the connecting pipe (53), the spring (9) causes the stopper (8) to press against the inner wall of the mounting hole (532), a water pipe (10) is provided between the first branch pipe (61) and the second branch pipe (62), a three-way valve (11) is provided between the first branch pipe (61) and the water pipe (10), and the three-way valve (11) is respectively connected to the first branch pipe (61), the water pipe (10) and a rotary joint (211) close to one end of the first branch pipe (61).

6. The generator stator punching sheet painting equipment according to claim 5, characterized in that: A one-way valve (12) is connected to the rotary joint (211) on the side close to the second branch pipe (62).

7. The generator stator punching and painting equipment according to claim 1 is characterized by: The discharging assembly (3) comprises a rotating rod (31) and a second driving member, wherein the rotating rod (31) is rotatably connected to the housing (1), a plurality of toothed rollers (311) are coaxially arranged on the rotating rod (31), the top side of the toothed rollers (311) is used to receive the bottom wall of the stator punching sheet (17), and the second driving member is used to drive the rotating rod (31) to rotate.

8. The generator stator punching sheet painting equipment according to claim 7 is characterized by: A water tank (14) is provided on the housing (1) below the rotating rod (31), and the toothed roller (311) is located in the water tank (14).

9. The generator stator punching sheet painting equipment according to claim 1, characterized in that: The housing (1) is provided with a receiving pan (15) for receiving fallen paint.

10. A process for applying the generator stator punching and painting equipment according to any one of claims 1 to 9, characterized in that: The process comprises the following steps: a. The pump body transports the paint to the connecting pipe (53), and the paint in the connecting pipe (53) is discharged through the discharge pipe (531) and falls into the gap between the paint roller (41) and the paint leveling roller (42); b. The paint roller (41) and the paint leveling roller (42) rotate in the same direction, and the paint leveling roller (42) scrapes off the excess paint on the paint roller (41), so that a paint film is formed on the surface of the paint roller (41), and the scraped paint adheres to the paint leveling roller (42) and is then scraped off by the scraper (43); c. The feeding assembly (2) feeds the stator punching sheet (17) between two paint rollers (41); d. The two paint rollers (41) rotate in opposite directions, the paint film on the surface of the upper paint roller (41) is applied to the upper surface of the stator punching sheet (17), and the paint film on the surface of the lower paint roller (41) is applied to the lower surface of the stator punching sheet (17); e. scraping the paint on the paint roller (41) with a scraper (43); f. The discharging assembly (3) transports the stator punching sheet (17) to the next process.

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