A lost foam casting equipment and process for reducing the surface roughness of a motor shell

Abstract

The application provides a lost foam casting equipment for reducing surface roughness of a motor shell and a process thereof, and belongs to the technical field of lost foam casting. The application solves the problem that the lost foam casting equipment is difficult to uniformly coat an EPS white mold in a coating process. The lost foam casting equipment for reducing surface roughness of a motor shell and the process thereof comprise a rack, two sliding cavities are formed in the rack, a lead screw is rotationally connected in the sliding cavity, the other end of the lead screw is fixedly connected with a first pulley, two first pulleys are connected through a first belt, a first motor and an arc-shaped object table are fixedly connected to the rack, the output shaft end of the first motor is fixedly connected with one of the first pulleys, a first threaded seat is threadedly connected to the lead screw, the first threaded seat is slidingly connected with the sliding cavity, a U-shaped stand is fixedly connected between the two first threaded seats, and the arc-shaped object table is located below the U-shaped stand. The application has the effect of improving the uniformity of coating of the EPS white mold in the coating process.

Description

Technical Field

[0001] This invention belongs to the field of lost foam casting technology, and relates to a lost foam casting equipment, particularly a lost foam casting equipment and process for reducing the surface roughness of motor housings. Background Technology

[0002] Lost foam casting (also known as solid casting) is a type of casting that uses foam plastic molds with binder-free dry sand combined with vacuum technology. It involves bonding and assembling foam models similar in size and shape to the casting into a model cluster, brushing on refractory coating and drying it, then embedding it in dry quartz sand and vibrating it to shape it. Under negative pressure, the foam is poured in, causing the model to vaporize, the liquid metal to occupy the model's position, and after solidification and cooling, the casting is formed.

[0003] A search revealed a Chinese patent document disclosing a device for lost foam casting [Application No.: 201911246378.9; Publication No.: CN110918905A]. This device includes an immersion tank, with fixed blocks fixedly connected to the four corners of the bottom of the immersion tank. Support legs are fixedly connected to the bottom of each of the four fixed blocks. Support seats are fixedly connected to the left and right sides of the immersion tank near the bottom and to the front and back. Support seats are also fixedly connected to the front and back of the immersion tank near the bottom and to the center. This invention, through the design of a load-bearing frame, a first electric telescopic rod, an immersion tank, partitions, and partitions, makes it more convenient and faster for workers to immerse multiple small lost foam pieces. It eliminates the need for manual force to press the lost foam pieces into the immersion tank, saving workers' energy and solving the problem of excessive time spent on immersion in traditional lost foam casting processes.

[0004] The patent discloses a method of opening the door frame via a hinge, then systematically placing the smaller lost foam pattern to be soaked into the soaking tank using partitions and dividers. After placement, the door frame is closed and secured with fasteners. At this point, the first electric telescopic rod switch is turned on, causing the first electric telescopic rod to retract and submerge the support frame into the soaking tank. Simultaneously, the drive motor switch is turned on, and the drive motor rotates, using a stirring blade to evenly stir the special liquid in the soaking tank, improving the soaking effect of the lost foam pattern. When the soaking tank is completely submerged, the special liquid enters the soaking tank through the through-holes and filter screen to render the lost foam pattern. However, this soaking method for coating EPS white molds can result in uneven coating thickness. If the coating thickness is too thin, it is prone to cracking when filling the sand box, resulting in poor coating protection. If the coating thickness is too thick, it will adhere to the surface of the motor housing after the model is cast and cooled, making it difficult to detach on its own and increasing the difficulty of cleaning the coating. Therefore, it is essential to ensure that the coating is evenly applied to the surface of the EPS white mold when applying it. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a lost foam casting equipment and process for reducing the surface roughness of motor housings. The technical problem this invention aims to solve is: how to improve the uniformity of coating in the coating process of EPS white molds.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A lost foam casting device for reducing the surface roughness of a motor housing includes a frame with two sliding cavities. A lead screw is rotatably connected within each cavity, and a first pulley is fixedly connected to the other end of the lead screw. The two first pulleys are connected by a first belt. A first motor and an arc-shaped platform are fixedly connected to the frame. The output shaft of the first motor is fixedly connected to one of the first pulleys. A first threaded seat is threaded onto the lead screw and slidably connected to the sliding cavity. A U-shaped upright is fixedly connected between the two first threaded seats. The arc-shaped platform is located below the U-shaped upright. A drive frame is connected to the U-shaped upright via an adjusting assembly. Two L-shaped clamps are connected to the drive frame via a drive assembly. Multiple vertical guide rollers are rotatably connected to the L-shaped clamps. An arc-shaped frame is fixedly connected to the bottom side of the L-shaped clamps, and multiple horizontal guide rollers are rotatably connected within the arc-shaped frame. A paint mixer and a paint... The system includes a paint tank equipped with a spraying assembly. Two mounting rollers are connected to the paint tank via a tilting assembly. Multiple drive sleeves are fixedly connected to the mounting rollers, and multiple round-headed baffles are fixedly connected to the drive sleeves. Multiple mounting cavities are formed within the mounting rollers, and reciprocating springs are fixedly connected to each cavity. A guide block is fixedly connected to the other end of each reciprocating spring and slides within the mounting cavity. A paint brush is fixedly connected to the other end of the guide block, located on the outer periphery of the drive sleeves. Multiple soft brush blades are fixedly connected to the paint brush. A second pneumatic slide and an intelligent drying chamber are fixedly connected to the frame. A second pneumatic slide base is slidably connected to the second pneumatic slide, and a drying frame is fixedly connected to the second pneumatic slide base. Multiple drying rods are fixedly connected to the drying frame. A switch assembly is installed on the intelligent drying chamber, and a photoelectric diameter gauge is fixedly connected to the inner wall of the intelligent drying chamber. A data panel is fixedly connected to the front of the intelligent drying chamber.

[0008] The working principle of this invention is as follows: The manufactured EPS (Expanded Polystyrene) white mold for the motor housing is placed on an arc-shaped platform. Water and high-temperature resistant coating are added to a coating mixer and mixed to produce a coating of appropriate concentration. This mixture is then poured into a coating tank, ensuring the coating level is higher than the mounting rollers for use. The drive frame is moved above the EPS white mold using an adjusting component. The drive component controls the two L-shaped clamps to move away from each other. Under the action of the adjusting component, the two L-shaped clamps move downwards to the sides of the EPS white mold. Then, the drive component controls the two L-shaped clamps to move closer together, moving them into the interior of the EPS white mold, so that the vertical guide rollers on the L-shaped clamps abut against the ends of the EPS white mold, and the horizontal guide rollers on the arc-shaped frame... The EPS white mold's inner wall abuts against the paint tank. At this time, the EPS white mold can rotate between the two L-shaped clamps. The first motor starts, and under the action of the first belt, it drives the two first pulleys to rotate synchronously. Then, through the lead screw and the first threaded seat, it drives the U-shaped stand to move above the paint tank. The adjusting component drives the EPS white mold to move down into the paint tank, located between the two mounting rollers, and abuts against the round-headed baffle on the drive sleeve. At this time, the lower half of the EPS white mold is immersed in the paint liquid. The flipping component drives the two mounting rollers to rotate in the same direction, thereby causing the round-headed baffle to rotate the EPS white mold. Under the action of the reciprocating spring and the guide block, multiple soft brush blades on the paint brush can enter... The coating is applied through the gaps in the outer wall of the EPS white mold. During rotation, multiple vertical and horizontal guide rollers slide relative to the EPS white mold, improving the smoothness of its rotation and allowing it to move up and down, creating a vibration effect that promotes uniform coating. Furthermore, during rotation, the spraying assembly sprays coating onto the outer wall of the EPS white mold, further enhancing the coating's effectiveness and uniformity. After the first coating is completed, the drive assembly and lead screw move the EPS white mold above the drying frame and place it on the drying rod. Then, the second pneumatic slide moves the drying frame into the intelligent drying chamber. Finally, the switching assembly activates the intelligent drying system. The openings on both sides of the drying chamber are closed, and the drying operation begins. After the first drying is completed, the outer diameter of the EPS white mold is measured using a photoelectric diameter gauge, and the outer diameter data of the EPS white mold before coating is compared with the data panel to analyze whether its coating thickness meets the mm requirement. Then, the EPS white mold is sent to the coating tank for a second coating, and then sent back to the intelligent drying chamber for a second drying. After drying, the outer diameter of the EPS white mold is measured again using a photoelectric diameter gauge, and its coating thickness is analyzed to see if it meets the mm thickness requirement. After the test is completed, the EPS white mold is moved to the right side of the intelligent drying chamber, and the staff removes it for subsequent processing.Based on the above principles, the uniformity of coating during the EPS white mold process is improved, resulting in a smoother surface after coating. This improves the production quality of the EPS white mold and helps reduce the surface roughness after subsequent motor housing casting, thereby enhancing the overall molding quality of the motor housing.

[0009] The adjustment assembly includes a first pneumatic slide table, which is fixedly connected to a U-shaped upright. A first pneumatic slide block is slidably connected to the first pneumatic slide table, and a hydraulic rod is fixedly connected to the first pneumatic slide block. The output end of the hydraulic rod is fixedly connected to the drive frame.

[0010] With the above structure, during operation, the first pneumatic slide table drives the drive frame to move above the position of the EPS white mold through the first pneumatic slide block. Then, the hydraulic rod drives the drive frame to move downward, so that the two L-shaped clamps are located at the left and right ends of the EPS white mold. Then, under the action of the drive assembly, the EPS white mold is clamped, but not completely clamped, and the EPS white mold can rotate between the two L-shaped clamps.

[0011] The drive assembly includes a third motor, which is fixedly connected to the drive frame. A main bevel gear is fixedly connected to the output shaft end of the third motor. A bidirectional threaded rod is rotatably connected inside the drive frame. A secondary bevel gear is fixedly connected to the middle of the bidirectional threaded rod. The main bevel gear and the secondary bevel gear mesh. Two second threaded seats are threadedly connected to the bidirectional threaded rod. The second threaded seats are fixedly connected to an L-shaped clamp.

[0012] With the above structure, when gripping the EPS white mold, the third motor drives the bidirectional threaded rod to rotate through the meshing of the main bevel gear and the secondary bevel gear. Under the action of the two second threaded seats, the two L-shaped clamping plates are driven to move away from each other. Then, the hydraulic rod drives the drive frame to move downward, so that the two L-shaped clamping plates are located at the left and right ends of the EPS white mold. Then, the third motor reverses to bring the two L-shaped clamping plates closer to each other and make the vertical guide roller abut against the end of the EPS white mold. At this time, it is not completely clamped, and the EPS white mold can rotate between the two L-shaped clamping plates, which facilitates the coating process.

[0013] The spraying assembly includes a spray box, two mounting plates fixedly connected to the paint tank, the two mounting plates fixedly connected to the spray box, a material pump fixedly connected to the spray box, a feeding pipe and a suction pipe fixedly connected to the feeding pump, the other end of the suction pipe extending into the paint tank, the other end of the feeding pipe fixedly connected to the spray box, and multiple spray heads fixedly connected to the spray box.

[0014] With the above structure, during the process of rotating the coating on the EPS white mold, the material pump sucks the coating from the paint tank into the spray box through the suction pipe and the delivery pipe, and then sprays the coating onto the outer periphery of the EPS white mold through multiple spray heads, thereby improving the uniformity of the coating on the EPS white mold.

[0015] The flipping assembly includes two drive shafts, both of which are rotatably connected to the paint tank. The mounting roller is fixedly connected to the drive shaft. A second pulley is fixedly connected to the other end of the drive shaft. The two second pulleys are connected by a second belt. A second motor is fixedly connected to the paint tank. The output shaft of the second motor is fixedly connected to one of the second pulleys.

[0016] With the above structure, when the EPS white mold moves into the paint tank and is positioned between the two mounting rollers, contacting the round-headed baffle on the drive sleeve, the second motor is activated. Under the action of the second belt, the two second pulleys rotate in the same direction, thereby driving the two mounting rollers to rotate. This causes multiple drive sleeves to flip, allowing the round-headed baffle to move the outer wall of the EPS white mold, causing it to rotate. Consequently, the mold rotates within the paint liquid surface. Due to the uneven outer wall of the EPS white mold, it also moves up and down during rotation, creating a vibration effect. Furthermore, with the paint brush and multiple soft brushes working together, this helps to improve the overall coverage and uniformity of the paint.

[0017] A drive column and a micro air pump are fixedly connected to the drying frame. The bottom side of the inner wall of the drying frame has a sloping structure. A stroke cavity is opened in the drive column. The left and right ends of the bottom side of the stroke cavity are respectively opened as a first exhaust port and a first air inlet. The micro air pump is fixedly connected to the first exhaust port and the first air inlet through an air pipe. A piston plate is slidably connected in the stroke cavity. An inner slide cylinder is fixedly connected to the piston plate. The inner slide cylinder is slidably connected to the stroke cavity. A slide rod is slidably connected in the inner slide cylinder. Limit strips are fixedly connected to the left and right sides of the stroke cavity and the left side of the inner wall of the inner slide cylinder. A support frame is fixedly connected to the other end of the slide rod. A first spring is fixedly connected in the support frame. A scraper is fixedly connected to the other end of the first spring. The scraper is slidably connected to the support frame. The bottom side of the scraper abuts against the drying frame. A material feeding assembly is provided in the drying frame.

[0018] Using the above structure, after the EPS white mold is coated, it is moved above the drying frame and placed on the drying rod. Excess coating on the EPS white mold surface drips into the drying frame for collection. A micro air pump delivers gas from the first air inlet to the inside of the stroke chamber, pushing the piston plate to move the inner slide cylinder to the left. This, in turn, moves the slide rod to push the support frame to the left. When both the inner slide cylinder and the slide rod are at their leftmost positions, they abut against the limit strip, creating gaps between the inner slide cylinder and the stroke chamber, and between the slide rod and the inner slide cylinder. This allows the mold to move to the right under the action of the micro air pump, thereby moving the scraper. During this movement, the scraper is controlled by the first spring... Under the action of the pump, the material is always in contact with the bottom side of the inner wall of the drying frame, which facilitates the scraping of the collected paint. With the cooperation of the discharge component, the paint is discharged into the paint pool for recycling, reducing resource waste. After cleaning, the micro air pump delivers gas from the first exhaust port to the inside of the stroke chamber, thereby pushing the piston plate to move the inner slide cylinder to the right. When the inner slide cylinder moves to the rightmost side and abuts against the limit strip, the gas enters the inside of the inner slide cylinder, thereby pushing the slide rod to move the support frame to the right, and then driving the scraper back to the initial position. Under the action of the inclined structure on the bottom side of the inner wall of the drying frame, the scraper retracts into the inside of the support frame. Through the design of this structure, the space occupied by the drive column can be reduced.

[0019] The inner slide cylinder has a second exhaust port on its right side, and the first air inlet is connected to the second exhaust port. The inner slide cylinder also has a second air inlet on its left side, and the second air inlet is connected to the first exhaust port.

[0020] With the above structure, when the micro air pump is working, gas is delivered into the stroke chamber through the air pipe and the first air inlet. The gas then enters the inner slide cylinder through the second exhaust port on the piston plate, thereby pushing the slide rod to the left to abut against the limiting strip inside the inner slide cylinder. When the gas enters the stroke chamber from the first exhaust port, the gas pushes the inner slide cylinder to the right through the piston plate. When the inner slide cylinder moves to the far right and abuts against the limiting strip, the gas enters the inner slide cylinder from the second air inlet on the left side, thereby pushing the slide rod to the right to fit against the right side of the inner wall of the inner slide cylinder, thus returning it to its initial position.

[0021] The feeding assembly includes a second spring, with an L-shaped rod fixedly connected to the other end of the second spring. The L-shaped rod abuts against the scraper plate. A straight rod is fixedly connected to the L-shaped rod, and a discharge nozzle is fixedly connected to the other end of the straight rod via a connecting block. A discharge port is opened on the bottom side of the discharge nozzle, and a feeding hole is opened on the left side of the drying frame. The discharge nozzle is located inside the feeding hole.

[0022] With the above structure, the paint collected inside the drying frame flows out through the discharge hole, running down the left outer wall of the frame and dripping downwards. Furthermore, due to manufacturing defects, the bottom of the outer wall may be uneven and tilted, causing the dripping paint to flow down the left side and remain on the bottom surface. This paint then drips onto the frame during frame movement, making cleaning difficult. Therefore, when cleaning the paint collected inside the drying frame, as the scraper moves to the left, the pressure of the scraper on the L-shaped rod to the right is released, and the L-shaped rod, under the action of the second spring... The machine moves downwards to the left, causing the straight rod to push the discharge nozzle to the outside of the discharge port, positioning the discharge nozzle and discharge port above the paint tank. Under the action of the scraper, the paint collected in the drying frame is discharged from the discharge port into the paint tank for recycling, reducing resource waste. After cleaning, the scraper returns to its initial position, squeezing the L-shaped rod to the right, causing it to move to the right. This, in turn, drives the discharge nozzle back into the discharge port via the straight rod, sealing the discharge port and preventing paint from flowing directly out of the discharge port and remaining on the outer wall of the drying frame, falling onto the frame and causing contamination.

[0023] The switch assembly includes a pneumatic telescopic rod, which is fixedly connected to the intelligent drying chamber. The output end of the pneumatic telescopic rod is fixedly connected to two chamber door panels via a T-shaped plate. Door slots are provided on both the left and right sides of the intelligent drying chamber, and the chamber door panels are slidably connected to the door slots.

[0024] With the above structure, after the second pneumatic slide moves the drying frame into the intelligent drying chamber, the pneumatic telescopic rod drives the T-shaped plate to move relative to each other, thereby causing the two chamber door panels to slide down along the door groove, so that the bottom side of the chamber door panel fits against the frame, which can close the openings on the left and right sides of the intelligent drying chamber, which is beneficial to improving the drying effect of EPS white mold.

[0025] A lost foam casting process includes the following steps:

[0026] S1: Place the manufactured EPS white mold of the motor housing on the curved platform. With the combined action of the adjusting component, drive frame, drive component and two L-shaped clamps, the EPS white mold is moved to the top of the paint tank.

[0027] S2: Move the EPS white mold into the paint pool, between the two mounting rollers, and make contact with the round-headed baffle on the drive sleeve. At this time, the lower half of the EPS white mold is immersed in the paint liquid. Under the action of the flipping component, mounting rollers, drive sleeve, and round-headed baffle, the EPS white mold is driven to rotate. With the cooperation of the paint brush, multiple soft brushes, and spraying components, the EPS white mold is coated with paint evenly to complete the first coating, making the coating thickness about 1mm.

[0028] S3: After the coating is completed, it is moved to the drying rack and placed on the drying rack. The drying frame is moved into the intelligent drying chamber by the second pneumatic slide. Then, the openings on the left and right sides of the intelligent drying chamber are closed by the switch assembly, and the drying operation begins. The drying temperature is 40℃ and the drying time is 2 hours to complete the first drying.

[0029] S4: After the first drying, the outer diameter of the EPS white mold is measured using a photoelectric diameter gauge and compared with the diameter before coating. The thickness of the first coating is analyzed through the data panel to see if it meets the 1mm thickness requirement. Then it is sent into the coating tank for the second coating. After coating, it is sent into the intelligent drying chamber for drying. The drying temperature is 50℃ and the drying time is 4 hours.

[0030] S5: After the second drying is completed, the outer diameter of the EPS white mold is measured again using a photoelectric diameter gauge. After the coating thickness is analyzed by the data panel to be about 2mm, the two sides of the intelligent drying chamber are opened by the switch assembly. The second pneumatic slide moves the drying frame to the right side of the intelligent drying chamber, where the staff removes it for subsequent processing.

[0031] Compared with existing technologies, this lost foam casting equipment and process for reducing the surface roughness of motor housings has the following advantages:

[0032] 1. Place the prepared EPS white mold for the motor housing on the curved platform. Add water and high-temperature resistant paint to the paint mixer and mix to prepare paint of appropriate concentration. Then pour it into the paint tank, ensuring the paint level is higher than the mounting roller for use. Move the drive frame above the EPS white mold using the adjusting component. Use the drive component to control the two L-shaped clamps to move away from each other. Under the action of the adjusting component, move the two L-shaped clamps downward to both sides of the EPS white mold. Then, the drive component controls the two L-shaped clamps to move closer together, moving them into the interior of the EPS white mold, so that the vertical guide rollers on the L-shaped clamps abut against the end of the EPS white mold, and the horizontal guide rollers on the curved frame abut against the interior of the EPS white mold. When the walls are in contact, the EPS white mold can rotate between the two L-shaped clamps. The first motor starts, and under the action of the first belt, it drives the two first pulleys to rotate synchronously. Then, through the lead screw and the first threaded seat, it drives the U-shaped stand to move above the paint tank. The adjusting component drives the EPS white mold to move down into the paint tank, located between the two mounting rollers, and in contact with the round-headed baffle on the drive sleeve. At this time, the lower half of the EPS white mold is immersed in the paint liquid. The flipping component drives the two mounting rollers to rotate in the same direction, thereby causing the round-headed baffle to rotate the EPS white mold. Under the action of the reciprocating spring and the guide block, multiple soft brush blades on the paint brush can enter the EPS white mold. The coating is applied in the gaps between the outer walls of the mold. During rotation, multiple vertical and horizontal guide rollers slide relative to the EPS white mold, improving the smoothness of its rotation and allowing it to move up and down, creating a vibration effect that promotes uniform coating. Furthermore, during rotation, the spraying assembly sprays coating onto the outer walls of the EPS white mold, further enhancing the coating's effectiveness and uniformity. After the first coating is completed, the drive assembly and lead screw move the EPS white mold above the drying frame and place it on the drying rod. Then, the second pneumatic slide moves the drying frame into the intelligent drying chamber. Finally, the switching assembly activates the intelligent drying system. The openings on both sides of the chamber are closed, and the drying process begins. After the first drying, a photoelectric diameter gauge is used to measure the outer diameter of the EPS white mold, and the outer diameter data of the EPS white mold before coating is compared with the data panel to analyze whether the coating thickness meets the requirements in mm. Then the EPS white mold is sent to the coating tank for the second coating, and then sent to the intelligent drying chamber for the second drying. After drying, the outer diameter of the EPS white mold is measured again with a photoelectric diameter gauge, and the coating thickness is analyzed to see if it meets the thickness requirements in mm. After the test is completed, the EPS white mold is moved to the right side of the intelligent drying chamber, and the staff removes it for subsequent processing.Based on the above principles, the uniformity of coating during the EPS white mold process is improved, resulting in a smoother surface after coating. This improves the production quality of the EPS white mold and helps reduce the surface roughness after subsequent motor housing casting, thereby enhancing the overall molding quality of the motor housing.

[0033] 2. After the EPS white mold is coated, move it above the drying frame and place it on the drying rod. Excess coating on the EPS white mold surface will drip into the drying frame for collection. A micro air pump delivers gas from the first air inlet to the inside of the stroke chamber, thereby pushing the piston plate to move the inner slide cylinder to the left. This, in turn, moves the slide rod to push the support frame to the left. When both the inner slide cylinder and the slide rod are at their leftmost positions, they abut against the limit strip, creating gaps between the inner slide cylinder and the stroke chamber, and between the slide rod and the inner slide cylinder. This allows the mold to move to the right under the action of the micro air pump, which in turn moves the scraper. During this movement, the scraper is controlled by the first spring. The scraper plate remains in contact with the bottom side of the inner wall of the drying frame, facilitating the scraping of collected paint. With the assistance of the discharge assembly, the paint is discharged into the paint tank for recycling, reducing resource waste. After cleaning, a micro-pump delivers gas from the first exhaust port into the stroke chamber, pushing the piston plate to move the inner slide cylinder to the right. When the inner slide cylinder reaches its rightmost position and contacts the limit strip, gas enters the inner slide cylinder, pushing the slide rod to move the support frame to the right. This, in turn, causes the scraper plate to return to its initial position. Furthermore, the inclined structure on the bottom side of the inner wall of the drying frame causes the scraper plate to retract into the support frame. This design reduces the space occupied by the drive column.

[0034] 3. Because the paint collected inside the drying frame flows out through the discharge hole and drips down the left outer wall of the frame, and due to manufacturing quality issues, the bottom of the outer wall may be uneven and tilted, causing the dripping paint to flow down the left side of the outer wall and remain on the bottom surface. This paint drips onto the machine frame during frame movement, making cleaning difficult. Therefore, when cleaning the paint collected inside the drying frame, as the scraper moves to the left, the pressure of the scraper on the L-shaped rod to the right is released, and the L-shaped rod, under the action of the second spring, moves back towards the machine. The machine moves to the left, causing the straight rod to push the discharge nozzle to the outside of the discharge port, positioning the discharge nozzle and discharge port above the paint tank. Under the action of the scraper, the paint collected in the drying frame is discharged from the discharge port into the paint tank for recycling, reducing resource waste. After cleaning, the scraper returns to its initial position, squeezing the L-shaped rod to the right, causing it to move to the right. This, in turn, drives the discharge nozzle back into the discharge port via the straight rod, sealing the discharge port and preventing paint from flowing directly out of the discharge port and remaining on the outer wall of the drying frame, falling onto the frame and causing contamination. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0036] Figure 2 This is a three-dimensional structural diagram of the coating mechanism in this invention.

[0037] Figure 3 This is a three-dimensional structural diagram of the driving frame in this invention.

[0038] Figure 4 This is a connection diagram of the mounting roller and the drive sleeve in this invention.

[0039] Figure 5 This is a three-dimensional structural diagram of the drying frame in this invention.

[0040] Figure 6 yes Figure 4 Side sectional view.

[0041] Figure 7 This is a front sectional view of the drive frame in this invention.

[0042] Figure 8 This is a front sectional view of the drying frame in this invention.

[0043] Figure 9 yes Figure 8 Enlarged view of the structure at point A in the middle.

[0044] Figure 10 yes Figure 8 Enlarged view of the structure at point B.

[0045] Figure 11 This is a side sectional view of the intelligent drying chamber in this invention.

[0046] In the diagram, 1. Frame; 2. Slide cavity; 3. Lead screw; 301. First threaded seat; 4. First pulley; 41. First belt; 5. First motor; 6. U-shaped upright; 7. First pneumatic slide; 71. First pneumatic slide block; 8. Hydraulic rod; 9. Drive frame; 10. Paint mixer; 11. Paint tank; 12. Second motor; 13. Second pulley; 131. Second belt; 14. Mounting roller; 141. Mounting cavity; 142. Reciprocating spring; 143. Guide block; 15. Drive sleeve; 151. Round head baffle; 16. Paint brush; 161. Soft brush; 17. Spray box; 171. Mounting plate; 18. Feed pump; 181. Feed pipe; 182. Suction pipe; 19. Spray head; 20. Third motor; 21. Bidirectional threaded rod; 211. Second screw... 21. Bevel gear; 22. Main bevel gear; 221. Secondary bevel gear; 23. L-shaped plate; 231. Vertical guide roller; 24. Arc-shaped frame; 241. Horizontal guide roller; 25. Second pneumatic slide table; 26. Drying frame; 27. Drying rod; 28. Drive column; 281. Stroke cavity; 282. Inner slide cylinder; 283. Slide rod; 284. Piston plate; 285. Limiting strip; 29. ​​Miniature air pump; 30. Support frame; 31. Scraper; 311. First spring; 32. Second spring; 33. L-shaped rod; 34. Straight rod; 341. Connecting block; 35. Discharge nozzle; 351. Discharge port; 36. Intelligent drying chamber; 361. Door slot; 37. Pneumatic telescopic rod; 371. T-shaped plate; 38. Chamber door panel; 39. Arc-shaped storage platform; 40. Photoelectric diameter gauge; 401. Data panel. Detailed Implementation

[0047] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0048] like Figures 1-11As shown, this lost foam casting equipment and process for reducing the surface roughness of motor housing includes a frame 1. Two sliding cavities 2 are formed on the frame 1. A lead screw 3 is rotatably connected within each sliding cavity 2. A first pulley 4 is fixedly connected to the other end of the lead screw 3. The two first pulleys 4 are connected by a first belt 41. A first motor 5 and an arc-shaped platform 39 are fixedly connected to the frame 1. The output shaft of the first motor 5 is fixedly connected to one of the first pulleys 4. A first threaded seat 301 is threaded onto the lead screw 3 and slidably connected to the sliding cavity 2. A U-shaped support 6 is fixedly connected between the two first threaded seats 301. The arc-shaped platform 39 is located below the U-shaped support 6. A drive frame 9 is connected to the U-shaped support 6 via an adjusting assembly. The drive frame 9 is connected to the drive assembly... Two L-shaped clamps 23 are connected, and multiple vertical guide rollers 231 are rotatably connected to the L-shaped clamps 23. An arc frame 24 is fixedly connected to the bottom side of the L-shaped clamps 23, and multiple horizontal guide rollers 241 are rotatably connected inside the arc frame 24. A paint mixer 10 and a paint tank 11 are fixedly connected to the frame 1. A spraying assembly is provided on the paint tank 11. Two mounting rollers 14 are connected to the paint tank 11 through a flipping assembly. Multiple drive sleeves 15 are fixedly connected to the mounting rollers 14, and multiple round-headed baffles 151 are fixedly connected to the drive sleeves 15. Multiple mounting cavities 141 are opened inside the mounting rollers 14, and reciprocating springs 142 are fixedly connected to the mounting cavities 141. A guide block 143 is fixedly connected to the other end of the reciprocating spring 142, and the guide block 143 slides with the mounting cavity 141. Next, a paint brush 16 is fixedly connected to the other end of the guide block 143. The paint brush 16 is located on the outer periphery of the drive sleeve 15. Multiple soft brush pieces 161 are fixedly connected to the paint brush 16. A second pneumatic slide table 25 and an intelligent drying chamber 36 are fixedly connected to the frame 1. A second pneumatic slide block is slidably connected to the second pneumatic slide table 25. A drying frame 26 is fixedly connected to the second pneumatic slide block. Multiple drying rods 27 are fixedly connected inside the drying frame 26. A switch assembly is provided on the intelligent drying chamber 36. A photoelectric diameter gauge 40 is fixedly connected to the inner wall of the intelligent drying chamber 36. A data panel 401 is fixedly connected to the front side of the intelligent drying chamber 36. In this embodiment, the manufactured motor housing EPS white mold is placed on the curved surface platform 39, and water and high-temperature resistant paint are added to the paint mixing... The coating is mixed in mixer 10 to produce a coating of appropriate concentration, and then poured into coating tank 11 so that the coating level is higher than the mounting roller 14 for use. The drive frame 9 is moved above the EPS white mold by adjusting the assembly. The drive assembly controls the two L-shaped clamping plates 23 to move away from each other. Under the action of the adjusting assembly, the two L-shaped clamping plates 23 move downwards to both sides of the EPS white mold. Then, the drive assembly controls the two L-shaped clamping plates 23 to move closer together, moving them into the interior of the EPS white mold, so that the vertical guide rollers 231 on the L-shaped clamping plates 23 abut against the end of the EPS white mold, and the horizontal guide rollers 241 on the arc frame 24 abut against the inner wall of the EPS white mold. At this time, the EPS white mold can rotate between the two L-shaped clamping plates 23. The first motor 5 is started.Under the action of the first belt 41, the two first pulleys 4 are driven to rotate synchronously, which in turn drives the U-shaped upright 6 to move above the paint tank 11 through the lead screw 3 and the first threaded seat 301. The adjusting component drives the EPS white mold to move downward to the inside of the paint tank 11, between the two mounting rollers 14, and abuts against the round-headed baffle 151 on the drive sleeve 15. At this time, the lower half of the EPS white mold is immersed in the paint liquid. The flipping component drives the two mounting rollers 14 to rotate in the same direction, thereby causing the EPS white mold to rotate through the round-headed baffle 151. Under the action of the reciprocating spring 142 and the guide block 143, Multiple soft brush blades 161 on the paint brush 16 can enter the gaps on the outer wall of the EPS white mold to apply paint. During rotation, multiple vertical guide rollers 231 and horizontal guide rollers 241 slide relative to the EPS white mold, thereby improving the smoothness of the EPS white mold's rotation and allowing the EPS white mold to move up and down, creating a certain vibration effect, which is more conducive to the uniformity of the paint. Furthermore, during the rotation of the EPS white mold, the spraying component can spray paint onto the outer wall of the EPS white mold, further improving the paint effect and uniformity. After the first coating is completed, the drive component and lead screw 3 are used to move the EPS white mold to the drying area. The drying frame 26 is placed on top of the drying rack 27, and then the drying frame 26 is moved into the intelligent drying chamber 36 by the second pneumatic slide 25. Then, the openings on the left and right sides of the intelligent drying chamber 36 are closed using the switch assembly, and the drying operation begins. After the first drying is completed, the outer diameter of the EPS white mold is detected by the photoelectric diameter gauge 40, and the outer diameter data of the EPS white mold before coating is compared by the data panel 401 to analyze whether its coating thickness meets the requirement of 1mm. Then, the EPS white mold is sent to the coating tank 11 for a second coating, and then sent back into the intelligent drying chamber 36. 6. A second drying process is performed. After drying, the outer diameter of the EPS white mold is again measured using a photoelectric diameter gauge 40, and its coating thickness is analyzed to ensure it meets the 2mm thickness requirement. After the test, the EPS white mold is moved to the right side of the intelligent drying chamber 36, where it is removed by staff for subsequent processing. This principle improves the uniformity of the coating process on the EPS white mold, resulting in a smoother surface after coating. This improves the production quality of the EPS white mold and helps reduce surface roughness after subsequent motor housing casting, thus improving the overall quality of the motor housing.

[0049] The adjustment assembly includes a first pneumatic slide 7, which is fixedly connected to a U-shaped support 6. A first pneumatic slide block 71 is slidably connected to the first pneumatic slide 7, and a hydraulic rod 8 is fixedly connected to the first pneumatic slide block 71. The output end of the hydraulic rod 8 is fixedly connected to the drive frame 9. In this embodiment, during operation, the first pneumatic slide 7 drives the drive frame 9 to move above the position of the EPS white mold through the first pneumatic slide block 71. Then, the hydraulic rod 8 drives the drive frame 9 to move downward, so that the two L-shaped clamping plates 23 are located at the left and right ends of the EPS white mold. Then, under the action of the drive assembly, the EPS white mold is clamped, but not completely clamped, and the EPS white mold can rotate between the two L-shaped clamping plates 23.

[0050] The drive assembly includes a third motor 20, which is fixedly connected to the drive frame 9. A main bevel gear 22 is fixedly connected to the output shaft end of the third motor 20. A bidirectional threaded rod 21 is rotatably connected inside the drive frame 9. A secondary bevel gear 221 is fixedly connected to the middle of the bidirectional threaded rod 21. The main bevel gear 22 and the secondary bevel gear 221 mesh. Two second threaded seats 211 are threadedly connected to the bidirectional threaded rod 21. The second threaded seats 211 are fixedly connected to an L-shaped clamping plate 23. In this embodiment, when gripping the EPS white mold, the third motor 20, through the main bevel gear... The meshing of wheel 22 and secondary bevel gear 221 drives the bidirectional threaded rod 21 to rotate. Under the action of the two second threaded seats 211, the two L-shaped clamping plates 23 are driven to move away from each other. Then, the hydraulic rod 8 drives the drive frame 9 to move downward, so that the two L-shaped clamping plates 23 are located at the left and right ends of the EPS white mold. Then, the third motor 20 reverses to make the two L-shaped clamping plates 23 move closer to each other and make the vertical guide roller 231 abut against the end of the EPS white mold. At this time, it is not completely clamped. The EPS white mold can rotate between the two L-shaped clamping plates 23, which facilitates the coating process.

[0051] The spraying assembly includes a spray box 17. Two mounting plates 171 are fixedly connected to the paint tank 11. The two mounting plates 171 are fixedly connected to the spray box 17. A material pump 18 is fixedly connected to the spray box 17. A feeding pipe 181 and a suction pipe 182 are fixedly connected to the material pump 18. The other end of the suction pipe 182 extends into the paint tank 11. The other end of the feeding pipe 181 is fixedly connected to the spray box 17. Multiple spray nozzles 19 are fixedly connected to the spray box 17. In this embodiment, during the process of rotating the EPS white mold with paint, the material pump 18 sucks the paint inside the paint tank 114 into the spray box 17 through the suction pipe 182 and the feeding pipe 181. Then, the paint is sprayed onto the outer periphery of the EPS white mold through the multiple spray nozzles 19, thereby improving the uniformity of the paint on the EPS white mold.

[0052] The flipping assembly includes two drive shafts, both of which are rotatably connected to the paint tank 11. Mounting rollers 14 are fixedly connected to the drive shafts. A second pulley 13 is fixedly connected to the other end of each drive shaft. The two second pulleys 13 are connected by a second belt 131. A second motor 12 is fixedly connected to the paint tank 11. The output shaft of the second motor 12 is fixedly connected to one of the second pulleys 13. In this embodiment, when the EPS white mold moves into the paint tank 11 and is located between the two mounting rollers 14, abutting against the round-headed baffle 151 on the drive sleeve 15, the first... When the second motor 12 is turned on, the two second pulleys 13 rotate in the same direction under the action of the second belt 131, thereby driving the two mounting rollers 14 to rotate, which in turn drives the multiple drive sleeves 15 to flip, so that the round-headed baffle 151 can move the outer wall of the EPS white mold to rotate, and then rotate in the paint liquid surface. Due to the structure of the EPS white mold, its outer wall is uneven, and it will also move up and down during the rotation, thus producing a vibration effect. In addition, with the paint brush 16 and multiple soft brushes 161 working together, it is beneficial to improve the coverage and uniformity of the paint.

[0053] A drive column 28 and a miniature air pump 29 are fixedly connected to the drying frame 26. The bottom side of the inner wall of the drying frame 26 has a sloping structure. A stroke cavity 281 is opened in the drive column 28. The left and right ends of the bottom side of the stroke cavity 281 are respectively opened as a first exhaust port and a first air inlet. The miniature air pump 29 is fixedly connected to the first exhaust port and the first air inlet through an air pipe. A piston plate 284 is slidably connected in the stroke cavity 281. An inner slide cylinder 282 is fixedly connected to the piston plate 284 and is slidably connected to the stroke cavity 281. A slide rod 283 is slidably connected in the inner slide cylinder 282. Limiting strips 2 are fixedly connected to the left and right sides of the stroke cavity 281 and the left side of the inner wall of the inner slide cylinder 282. 85. A support frame 30 is fixedly connected to the other end of the slide rod 283. A first spring 311 is fixedly connected inside the support frame 30. A scraper 31 is fixedly connected to the other end of the first spring 311. The scraper 31 is slidably connected to the support frame 30. The bottom side of the scraper 31 abuts against the drying frame 26. A material feeding component is provided inside the drying frame 26. In this embodiment, after the EPS white mold is coated, the EPS white mold is moved above the drying frame 26 and placed on the drying rod 27. Then, the excess coating on the surface of the EPS white mold will drip into the interior of the drying frame 26 for collection. The micro air pump 29 delivers gas from the first air inlet to the interior of the stroke cavity 281. This causes the piston plate 284 to move the inner slide cylinder 282 to the left, which in turn causes the slide rod 283 to move the support frame 30 to the left. When both the inner slide cylinder 282 and the slide rod 283 have moved to the leftmost position, they abut against the limit strip 285, thus creating gaps between the inner slide cylinder 282 and the stroke cavity 281, and between the slide rod 283 and the inner slide cylinder 282. This allows the inner slide cylinder 282 to move to the right under the action of the micro air pump 29, which in turn moves the scraper plate 31. During the movement, the scraper plate 31, under the action of the first spring 311, remains in contact with the bottom side of the inner wall of the drying frame 26, facilitating the scraping of the collected paint and its discharge with the assistance of the discharging assembly. The waste is recycled in the paint tank 11 to reduce resource waste. After cleaning, the micro air pump 29 delivers gas from the first exhaust port to the inside of the stroke chamber 281, thereby pushing the piston plate 284 to move the inner slide cylinder 282 to the right. When the inner slide cylinder 282 moves to the rightmost position and abuts against the limit bar 285, the gas enters the inside of the inner slide cylinder 282, thereby pushing the slide rod 283 to move the support frame 30 to the right, and then driving the scraper 31 back to the initial position. Under the action of the inclined structure on the bottom side of the inner wall of the drying frame 26, the scraper 31 retracts into the inside of the support frame 30. Through the setting of this structure, the space occupied by the drive column 28 can be reduced.

[0054] A second exhaust port is provided on the right side of the inner slide cylinder 282, and the first air inlet is connected to the second exhaust port. A second air inlet is provided on the left side of the inner slide cylinder 282, and the second air inlet is connected to the first exhaust port. In this embodiment, when the micro air pump 29 is working, it delivers gas into the stroke chamber 281 through the air pipe and the first air inlet. The gas then enters the interior of the inner slide cylinder 282 through the second exhaust port on the inner slide cylinder 282 and the piston plate 284, thereby pushing the slide rod 283 to the left to move to the position of the piston rod 283. The limiting strip 285 inside the inner slide cylinder 282 abuts against it; when gas enters the stroke chamber 281 from the first exhaust port, the gas pushes the inner slide cylinder 282 to the right through the piston plate 284. When the inner slide cylinder 282 moves to the far right and abuts against the limiting strip 285, the gas enters the interior of the inner slide cylinder 282 from the second air inlet on the left side of the inner slide cylinder 282, thereby pushing the slide rod 283 to the right to fit against the right side of the inner wall of the inner slide cylinder 282, thus returning it to its initial position.

[0055] The feeding assembly includes a second spring 32, with an L-shaped rod 33 fixedly connected to the other end of the second spring 32. The L-shaped rod 33 abuts against the scraper 31. A straight rod 34 is fixedly connected to the L-shaped rod 33, and the other end of the straight rod 34 is fixedly connected to a discharge nozzle 35 via a connecting block 341. A discharge port 351 is opened on the bottom side of the discharge nozzle 35. A feeding hole is opened on the left side of the drying frame 26, and the discharge nozzle 35 is located in the feeding hole. In this embodiment, the paint collected inside the drying frame 26 will flow out through the feeding hole and flow along the outer wall of the left side of the drying frame 26 and drip down. In addition, due to the manufacturing quality of the drying frame 26, the bottom side of the outer wall of the drying frame 26 may be uneven and tilted, causing the dripping paint to flow along the left side of the outer wall to the bottom side and remain on the bottom surface. As a result, during the movement of the drying frame 26, the paint drips onto the frame 1, making it inconvenient to clean. Therefore, during the drying process... When cleaning the paint collected inside the drying frame 26, the scraper 31 moves to the left, releasing the pressure of the scraper 31 on the L-shaped rod 33 to the right. Under the action of the second spring 32, the L-shaped rod 33 moves to the left, thereby driving the straight rod 347 to push the discharge nozzle 35 to the left to the outside of the discharge port, so that the discharge nozzle 35 and the discharge port 351 are located above the paint pool 11. Thus, under the action of the scraper 31, the paint collected inside the drying frame 26 is discharged from the discharge port 351 into the paint pool 11 for recycling and reducing resource waste. After cleaning, the scraper 31 returns to its initial position, thereby squeezing the L-shaped rod 33 to the right, causing it to move to the right. This causes the straight rod 347 to drive the discharge nozzle 35 back to the inside of the discharge port, sealing the discharge port and preventing the paint inside the drying frame 26 from flowing directly out of the discharge port and remaining on the outer wall of the drying frame 26, and falling onto the frame 1 and causing pollution.

[0056] The switching assembly includes a pneumatic telescopic rod 37, which is fixedly connected to the intelligent drying chamber 36. The output end of the pneumatic telescopic rod 37 is fixedly connected to two chamber door panels 38 through a T-shaped plate 371. Door slots 361 are provided on both the left and right sides of the intelligent drying chamber 36, and the chamber door panels 38 are slidably connected to the door slots 361. In this embodiment, when the second pneumatic slide 25 moves the drying frame 26 into the interior of the intelligent drying chamber 36, the pneumatic telescopic rod 37 drives the T-shaped plate 371 to move relative to each other, thereby causing the two chamber door panels 38 to slide down along the door slots 361, so that the bottom side of the chamber door panels 38 fits against the frame 1, which can close the openings on the left and right sides of the intelligent drying chamber 36, which is beneficial to improving the drying effect of EPS white mold.

[0057] A lost foam casting process includes the following steps:

[0058] S1: Place the manufactured EPS white mold of the motor housing on the curved platform 39. With the combined action of the adjustment component, drive frame 9, drive component and two L-shaped clamps 23, the EPS white mold is moved above the paint tank 11.

[0059] S2: Move the EPS white mold into the paint pool 11, between the two mounting rollers 14, and abut against the round-headed baffle 151 on the drive sleeve 15. At this time, the lower half of the EPS white mold is immersed in the paint liquid. Under the action of the flipping component, the drive sleeve 15 of the mounting rollers 14, and the round-headed baffle 151, the EPS white mold is driven to rotate. With the cooperation of the paint brush 16, multiple soft brushes 161, and the spraying component, the EPS white mold is coated with paint evenly to complete the first coating, so that the coating thickness is about 1mm.

[0060] S3: After the coating is completed, it is moved onto the drying rod 27 and placed there. The drying frame 26 is moved into the intelligent drying chamber 36 by the second pneumatic slide 25. Then, the openings on the left and right sides of the intelligent drying chamber 36 are closed by the switch assembly, and the drying operation begins. The drying temperature is 40℃ and the drying time is 2 hours to complete the first drying.

[0061] S4: After the first drying, the outer diameter of the EPS white mold is detected by photoelectric diameter measuring instrument 40 and compared with the diameter before coating. The thickness of the first coating is analyzed by data panel 401 to see if it meets the thickness requirement of 1mm. Then it is sent into the coating tank 11 for the second coating. After coating, it is sent into the intelligent drying chamber 36 for drying. The drying temperature is 50℃ and the drying time is 4 hours.

[0062] S5: After the second drying is completed, the outer diameter of the EPS white mold is detected again using the photoelectric diameter gauge 40. After the coating thickness is analyzed by the data panel 401 and found to be about 2mm, the two sides of the intelligent drying chamber 36 are opened by the switch assembly. The second pneumatic slide 25 moves the drying frame 26 to the right side of the intelligent drying chamber 36, and the staff removes it for subsequent processing.

[0063] The working principle of this invention is as follows: The manufactured EPS white mold for the motor housing is placed on the curved platform 39. Water and high-temperature resistant paint are added to the paint mixer 10 for mixing to produce a paint of appropriate concentration. The paint is then poured into the paint tank 11, ensuring the paint level is higher than the mounting roller 14 for use. The drive frame 9 is moved above the EPS white mold via the first pneumatic slide 7. The third motor 20 drives the bidirectional threaded rod 21 to rotate through the meshing of the main bevel gear 22 and the secondary bevel gear 221. Under the action of the two second threaded seats 211, the two L-shaped clamping plates 23 are driven to move away from each other. Under the action of the adjusting component, the two L-shaped clamping plates 23 are moved downward to both sides of the EPS white mold. Then, the third motor 20 reverses to make the two L-shaped clamping plates... The plates 23 move closer together and into the interior of the EPS white mold, so that the vertical guide rollers 231 on the L-shaped clamping plate 23 abut against the end of the EPS white mold, and the horizontal guide rollers 241 on the arc frame 24 abut against the inner wall of the EPS white mold. At this time, the EPS white mold can rotate between the two L-shaped clamping plates 23. The first motor 5 starts and, under the action of the first belt 41, drives the two first pulleys 4 to rotate synchronously. Then, through the lead screw 3 and the first threaded seat 301, it drives the U-shaped upright 6 to move above the paint tank 11. The hydraulic rod 8 drives the EPS white mold to move downward into the interior of the paint tank 11, between the two mounting rollers 14, and abut against the round-headed baffle 151 on the drive sleeve 15. At this time, the lower half of the EPS white mold is immersed in the paint liquid. The second motor... When 12 is activated, the two second pulleys 13 rotate in the same direction under the action of the second belt 131, thereby driving the two mounting rollers 14 to rotate. This, in turn, causes the EPS white mold to rotate via the round-headed baffle 151. Under the action of the reciprocating spring 142 and the guide block 143, multiple soft brush blades 161 on the paint brush 16 can enter the gaps on the outer wall of the EPS white mold to apply paint. During the rotation, multiple vertical guide rollers 231 and horizontal guide rollers 241 slide relative to the EPS white mold, thereby improving the smoothness of the EPS white mold rotation and allowing the EPS white mold to move up and down, creating a certain vibration effect, which is more conducive to the uniform application of paint. During the rotation of the EPS white mold, the material pump 18 delivers material through the feeding pipe 181 and the suction pipe 182. Paint from the paint tank 114 is drawn into the spray box 17, and then sprayed onto the outer periphery of the EPS white mold via multiple spray heads 19, further improving the paint's effect and uniformity. After painting, the EPS white mold is moved above the drying frame 26 using the drive assembly and lead screw 3, and placed on the drying rod 27. Then, the drying frame 26 is moved into the intelligent drying chamber 36 via the second pneumatic slide 25. The pneumatic telescopic rod 37 drives the T-shaped plate 371 to move relative to each other, thereby causing the two chamber door panels 38 to slide downwards along the door groove 361, so that the bottom side of the chamber door panels 38 fits against the frame 1, thus closing the openings on the left and right sides of the intelligent drying chamber 36, and starting the drying operation. After the first drying is completed,The outer diameter of the EPS white mold is measured using a photoelectric diameter gauge 40, and the data before coating is compared with the outer diameter data of the EPS white mold through the data panel 401 to analyze whether its coating thickness meets the requirement of 1mm. Then, the EPS white mold is sent to the coating tank 11 for a second coating, and then sent to the intelligent drying chamber 36 for a second drying. After drying, the outer diameter of the EPS white mold is measured again using the photoelectric diameter gauge 40, and its coating thickness is analyzed to see if it meets the requirement of 2mm. After the test, the EPS white mold is moved to the right side of the intelligent drying chamber 36, and the staff removes it for subsequent processing. After the coating of the EPS white mold is completed, the EP The EPS white mold is moved above the drying frame 26 and placed on the drying rod 27. The paint on the EPS white mold surface drips into the drying frame 26 for collection. When the micro air pump 29 is working, it delivers gas through the air pipe and the first air inlet into the stroke chamber 281. The gas then enters the inner slide cylinder 282 through the second exhaust port on the inner slide cylinder 282 and the piston plate 284, thus pushing the slide rod 283 to the left to abut against the limiting strip 285 inside the inner slide cylinder 282. This pushes the support frame 30 to the left, thereby moving the scraper plate 31. During this movement, the scraper plate 31, under the action of the first spring 311, remains in contact with the drying frame. The bottom side of the inner wall of frame 26 is in contact with the wall to facilitate scraping off the collected paint. When the scraper 31 moves to the left, the pressure of the scraper 31 on the L-shaped rod 33 to the right is released. Under the action of the second spring 32, the L-shaped rod 33 moves to the left, thereby driving the straight rod 347 to push the discharge nozzle 35 to the left to the outside of the discharge port 351, so that the discharge nozzle 35 is above the paint tank 11. Thus, under the action of the scraper 31, the paint collected in the drying frame 26 is discharged from the discharge port 351 into the paint tank 11 for recycling and reducing resource waste. After cleaning, the micro air pump 29 delivers gas from the first exhaust port to the inside of the stroke chamber 281. The gas passes through the piston plate 28. 4. Push the inner slide cylinder 282 to the right. When the inner slide cylinder 282 moves to the far right and abuts against the limiting strip 285, gas enters the interior of the inner slide cylinder 282 from the second air inlet on the left side. This pushes the slide rod 283 to the right and it comes into contact with the right side of the inner wall of the inner slide cylinder 282. This causes the scraper plate 31 to return to its initial position, thus squeezing the L-shaped rod 33 to the right and causing it to move to the right. This, in turn, drives the discharge nozzle 35 back to the inside of the discharge port through the straight rod 347, sealing the discharge port and preventing the paint inside the drying frame 26 from flowing directly out of the discharge port and remaining on the outer wall of the drying frame 26, falling onto the frame 1 and causing pollution.

[0064] In summary, by using the coordinated use of components such as adjustment components, drive components, spraying components, mounting rollers, drive sleeves, flipping components, drive columns, micro air pumps, feeding components, photoelectric diameter gauges, and data panels, the uniformity of coating in the coating process of EPS white molds can be improved.

[0065] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A lost foam casting apparatus for reducing the surface roughness of an electric motor housing, comprising a frame (1), characterized in that, The frame (1) has two sliding cavities (2), and a lead screw (3) is rotatably connected inside the sliding cavity (2). The other end of the lead screw (3) is fixedly connected to a first pulley (4). The two first pulleys (4) are connected by a first belt (41). A first motor (5) and an arc-shaped platform (39) are fixedly connected to the frame (1). The output shaft of the first motor (5) is fixedly connected to one of the first pulleys (4). A first threaded seat (301) is threaded onto the lead screw (3). The first threaded seat (301) is slidably connected to the sliding cavity (2). A U-shaped... The upright frame (6) and the curved platform (39) are located below the U-shaped upright frame (6). The U-shaped upright frame (6) is connected to the drive frame (9) through the adjustment assembly. The drive frame (9) is connected to two L-shaped clamps (23) through the drive assembly. Multiple vertical guide rollers (231) are rotatably connected to the L-shaped clamps (23). The bottom side of the L-shaped clamps (23) is fixedly connected to the curved frame (24). Multiple horizontal guide rollers (241) are rotatably connected inside the curved frame (24). The frame (1) is fixedly connected to the paint mixer (10) and the paint tank (11). The paint tank (11) is equipped with a spraying assembly. 1) Two mounting rollers (14) are connected by a flipping assembly. Multiple drive sleeves (15) are fixedly connected to the mounting rollers (14). Multiple round-headed baffles (151) are fixedly connected to the drive sleeves (15). Multiple mounting cavities (141) are opened inside the mounting rollers (14). A reciprocating spring (142) is fixedly connected inside the mounting cavity (141). A guide block (143) is fixedly connected to the other end of the reciprocating spring (142). The guide block (143) is slidably connected to the mounting cavity (141). A paint brush (16) is fixedly connected to the other end of the guide block (143). The paint brush (16) is located on the drive sleeve. (15) On the outer periphery, multiple soft brushes (161) are fixedly connected to the paint brush (16). A second pneumatic slide (25) and an intelligent drying chamber (36) are fixedly connected to the frame (1). A second pneumatic slide is slidably connected to the second pneumatic slide (25). A drying frame (26) is fixedly connected to the second pneumatic slide. Multiple drying rods (27) are fixedly connected inside the drying frame (26). A switch assembly is provided on the intelligent drying chamber (36). A photoelectric diameter measuring instrument (40) is fixedly connected to the inner wall of the intelligent drying chamber (36). A data panel (401) is fixedly connected to the front side of the intelligent drying chamber (36). A drive column (28) and a micro air pump (29) are fixedly connected to the drying frame (26). The bottom side of the inner wall of the drying frame (26) is sloping. A stroke cavity (281) is opened in the drive column (28). The left and right ends of the bottom side of the stroke cavity (281) are respectively provided with a first exhaust port and a first air inlet. The micro air pump (29) is fixedly connected to the first exhaust port and the first air inlet through an air pipe. A piston plate (284) is slidably connected in the stroke cavity (281). An inner slide cylinder (282) is fixedly connected to the piston plate (284). The inner slide cylinder (282) is slidably connected to the stroke cavity (281). Next, a sliding rod (283) is slidably connected inside the inner sliding cylinder (282). Limiting strips (285) are fixedly connected to the left and right sides of the stroke cavity (281) and the left side of the inner wall of the inner sliding cylinder (282). A support frame (30) is fixedly connected to the other end of the sliding rod (283). A first spring (311) is fixedly connected inside the support frame (30). A scraper (31) is fixedly connected to the other end of the first spring (311). The scraper (31) is slidably connected to the support frame (30). The bottom side of the scraper (31) abuts against the drying frame (26). A feeding component is provided inside the drying frame (26). The inner slide (282) has a second exhaust port on the right side, and the first air inlet is connected to the second exhaust port. The inner slide (282) has a second air inlet on the left side, and the second air inlet is connected to the first exhaust port.

2. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The adjustment assembly includes a first pneumatic slide (7), which is fixedly connected to a U-shaped stand (6). A first pneumatic slide (71) is slidably connected to the first pneumatic slide (7), and a hydraulic rod (8) is fixedly connected to the first pneumatic slide (71). The output end of the hydraulic rod (8) is fixedly connected to the drive frame (9).

3. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The drive assembly includes a third motor (20), which is fixedly connected to the drive frame (9). The output shaft of the third motor (20) is fixedly connected to a main bevel gear (22). A bidirectional threaded rod (21) is rotatably connected inside the drive frame (9). A secondary bevel gear (221) is fixedly connected to the middle of the bidirectional threaded rod (21). The main bevel gear (22) meshes with the secondary bevel gear (221). Two second threaded seats (211) are threadedly connected to the bidirectional threaded rod (21). The second threaded seats (211) are fixedly connected to the L-shaped clamp (23).

4. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The spraying assembly includes a spray box (17), two mounting plates (171) are fixedly connected to the paint tank (11), the two mounting plates (171) are fixedly connected to the spray box (17), the spray box (17) is fixedly connected to a feed pump (18), the feed pump (18) is fixedly connected to a feed pipe (181) and a suction pipe (182), the other end of the suction pipe (182) extends into the paint tank (11), the other end of the feed pipe (181) is fixedly connected to the spray box (17), and multiple spray heads (19) are fixedly connected to the spray box (17).

5. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The flipping assembly includes two drive shafts, both of which are rotatably connected to the paint tank (11). The mounting roller (14) is fixedly connected to the drive shaft. The other end of the drive shaft is fixedly connected to a second pulley (13). The two second pulleys (13) are connected by a second belt (131). A second motor (12) is fixedly connected to the paint tank (11). The output shaft end of the second motor (12) is fixedly connected to one of the second pulleys (13).

6. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The feeding assembly includes a second spring (32), and an L-shaped rod (33) is fixedly connected to the other end of the second spring (32). The L-shaped rod (33) abuts against the scraper (31). A straight rod (34) is fixedly connected to the L-shaped rod (33). The other end of the straight rod (34) is fixedly connected to a discharge nozzle (35) through a connecting block (341). A discharge port (351) is opened on the bottom side of the discharge nozzle (35). A feeding hole is opened on the left side of the drying frame (26). The discharge nozzle (35) is located in the feeding hole.

7. The lost foam casting equipment for reducing the surface roughness of a motor housing according to claim 1, characterized in that, The switch assembly includes a pneumatic telescopic rod (37), which is fixedly connected to the intelligent drying chamber (36). The output end of the pneumatic telescopic rod (37) is fixedly connected to two chamber door panels (38) through a T-shaped plate (371). Door slots (361) are provided on both the left and right sides of the intelligent drying chamber (36), and the chamber door panels (38) are slidably connected to the door slots (361).

8. A casting process for a lost foam casting apparatus for reducing the surface roughness of a motor housing as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Place the manufactured EPS white mold of the motor housing on the curved platform (39). Under the combined action of the adjustment component, drive frame (9), drive component and two L-shaped clamps (23), the EPS white mold is moved to the top of the paint tank (11). S2: Move the EPS white mold into the paint pool (11), between the two mounting rollers (14), and into contact with the round-headed baffle (151) on the drive sleeve (15). At this time, the lower half of the EPS white mold is immersed in the paint liquid. Under the action of the flipping component, the mounting roller (14), the drive sleeve (15), and the round-headed baffle (151), the EPS white mold is driven to rotate. With the cooperation of the paint brush (16), multiple soft brushes (161), and the spraying component, the EPS white mold is uniformly coated to complete the first coating, so that the coating thickness is about 1 mm. S3: After the coating is completed, it is moved to the drying rack (27) and placed there. The drying frame (26) is moved into the intelligent drying chamber (36) by the second pneumatic slide (25). Then, the openings on the left and right sides of the intelligent drying chamber (36) are closed by the switch assembly, and the drying operation begins. The drying temperature is 40°C and the drying time is 2 hours to complete the first drying. S4: After the first drying is completed, the outer diameter of the EPS white mold is detected by photoelectric diameter measuring instrument (40) and compared with the diameter before coating. The thickness of the first coating is analyzed by data panel (401) to see if it meets the thickness requirement of 1mm. Then it is sent into the coating tank (11) for the second coating. After coating, it is sent into the intelligent drying chamber (36) for drying. The drying temperature is 50℃ and the drying time is 4 hours. S5: After the second drying is completed, the outer diameter of the EPS white mold is detected again using a photoelectric diameter gauge (40). After the coating thickness is analyzed to be about 2mm through the data panel (401), the two sides of the intelligent drying chamber (36) are opened through the switch assembly. The second pneumatic slide (25) moves the drying frame (26) to the right side of the intelligent drying chamber (36), and the staff takes it away and then carries out the subsequent processing.

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