A casting device for producing motor housing

Abstract

The invention relates to the technical field of motor housing casting, and discloses a casting device for motor housing production, comprising a processing table, a bottom mold installed on the top of the processing table, and a top mold movably covering the top of the bottom mold, two sets of lifting transmission components arranged opposite to each other are installed on the top of the left and right ends of the bottom mold, the two sets of lifting transmission components are connected by forward and reverse driving components, and the lifting transmission directions of the left and right lifting transmission components are opposite, wherein the left lifting transmission component carries the top mold to move vertically during lifting transmission to complete the mold opening and closing process, and the right lifting transmission component acts on the powder loading component and the ventilation component during lifting transmission, so that the powder loading component completes automatic loading or spraying, and completes the switching of the exhaust and feeding paths of the ventilation component, so as to alternately cool the mold cavity of the bottom mold for heat exchange or apply film to the mold cavity, and adopts an integrated automated processing method to significantly improve the surface finish of the casting, improve the demoulding efficiency and the quality of the product.

Description

Technical Field

[0001] The invention relates to the technical field of motor housing casting, and more specifically to a casting device for producing a motor housing. Background Art

[0002] The motor housing is usually made of aluminum alloy. Aluminum alloy has the advantages of light weight, good thermal conductivity, and strong corrosion resistance. It is suitable for the manufacture of motor housings. The casting process is a key link in the production of motor housings. Common casting methods include die casting, sand casting, metal mold casting, etc. Among them, metal mold casting has good surface finish and dimensional accuracy and is widely used. In the metal mold casting process, the use of coatings is a vital link. The coating not only protects the metal mold and prevents the metal liquid from directly contacting the mold surface, but also helps the surface finish of the casting and facilitate demolding. In the casting process, the selection and use of coatings need to be determined according to the specific casting requirements and casting characteristics. For example, for parts that are difficult to open or prone to tearing the casting, graphite coatings with good lubricity should be used.

[0003] After each round of mold opening and part removal, the processing step of applying the isolation layer (graphite coating) in the mold cavity is completed by an independent spraying system or manual coating, which undoubtedly increases the production cost and prolongs the casting cycle.

[0004] Therefore, the present invention proposes a casting device for the production of motor housings, which can significantly improve the surface finish of the casting, improve the demolding efficiency and the quality of the final product by alternating casting molding and coating lubrication and adopting an integrated automated processing method. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a casting device for the production of motor housings to solve the problem existing in the above-mentioned background technology of how to combine the processing steps of casting molding and coating lubrication and adopt an integrated automated production method to improve demolding efficiency and product quality.

[0006] The present invention provides the following technical solutions: a casting device for producing motor housings, comprising a processing table, a bottom mold installed on the top of the processing table, and a top mold movably covering the top of the bottom mold, two sets of lifting transmission components arranged opposite to each other are installed on the top of the left and right ends of the bottom mold, the two sets of lifting transmission components are connected by forward and reverse drive components, and the lifting transmission directions of the left and right lifting transmission components are opposite, wherein the left lifting transmission component carries the top mold to move vertically during lifting transmission to complete the mold opening and closing process, and the right lifting transmission component acts on the powder loading component and the ventilation component during lifting transmission, so that the powder loading component completes automatic loading or spraying, and completes the switching of the exhaust and feeding paths of the ventilation component, so as to alternately cool the mold cavity of the bottom mold for heat exchange or apply film to the mold cavity;

[0007] The lifting transmission assembly comprises a track, a rack and a balance stopper, wherein the track is fixedly mounted on the top wall of the end of the bottom mold, the inner side of the track is slidably connected to the balance stopper, and the end of the balance stopper away from the track is connected to the rack;

[0008] The powder loading assembly comprises a powder collecting pipe, a piston rod, a connecting frame, a discharge one-way valve, a feed one-way valve and a powder conveying pipe, wherein the powder collecting pipe is fixedly mounted on a track, a piston rod is movably inserted in the powder collecting pipe, the rod body of the piston rod movably penetrates the top wall of the powder collecting pipe and is fixedly connected to the connecting frame, and the connecting frame is fixedly mounted below the rack and the balance limiter, a discharge one-way valve and a feed one-way valve in communication with the powder collecting pipe are arranged at the bottom end, wherein the feed one-way valve is in communication with a graphite powder supply source through the powder conveying pipe, and the powder loading assembly further comprises a push rod, the top end of which is fixedly connected to the connecting frame;

[0009] The ventilation assembly includes an air collecting box, a powder collecting box, an air circuit switching member and a connecting pipe, wherein the air collecting box is fixedly mounted on the outer wall of the bottom mold on the same side as the powder loading assembly, a powder collecting box covered in a groove on the side wall of the bottom mold is fixedly mounted in the air collecting box, an air circuit switching member is rotatably arranged in the powder collecting box, a connecting pipe is fixedly connected to the side wall of the air collecting box away from the bottom mold, and the connecting pipe is communicated with the fan;

[0010] The bottom end of the push rod extends downward and is inserted into the insert tube of the top wall of the air collecting box. When the push rod is lifted upward to the maximum height, the bottom end of the push rod still does not completely separate from the insert tube.

[0011] Furthermore, the air circuit switching component includes a positioning shaft, a swivel, a first connecting arm, a first sealing disk, a second connecting arm, a second sealing disk, a force plate, a spring and an elastic telescopic rod, wherein one end of the positioning shaft is fixedly assembled in the groove of the bottom mold, and the other end thereof is rotatably sleeved on the swivel, and the end side of the swivel is fixedly connected to the first sealing disk through the first connecting arm, and the first connecting arm is fixedly connected to the second sealing disk through the second connecting arm, and a force plate located below the push rod is also fixedly installed on the first connecting arm, wherein the force plate is elastically connected to the top wall of the air collecting box through a spring, and an elastic telescopic rod is also fixedly installed below the swivel.

[0012] Furthermore, the ventilation duct of the bottom mold and the air injection holes of the powder collecting box are respectively located on the rotation trajectory of the first sealing disk and the second sealing disk, and the spray port of the bottom mold is located on the rotation trajectory of the elastic telescopic rod. The sealing plug of the elastic telescopic rod is conical and fits with the spray port.

[0013] Furthermore, the forward and reverse drive assembly includes a vertical plate, a transmission shaft, a gear and a reversible motor, wherein the vertical plate is fixedly mounted on the top wall of the processing table, the transmission shaft is rotatably sleeved on the vertical plate through a bearing, and one end of the transmission shaft is fixedly connected to the output shaft of the reversible motor through a coupling, and the other end of the transmission shaft is fixedly sleeved on the gear, and the gear is located between the left and right racks and meshes with them.

[0014] Furthermore, the balance limit member includes a sliding rod, a U-shaped connecting rod and a guide wheel, wherein one end of the sliding rod is fixedly connected to the bottom end of the rack, and the other end of the sliding rod is slidably connected in the slide groove of the track, and the two sides of the sliding rod close to one end of the track are fixedly connected with the U-shaped connecting rod, the end of the U-shaped connecting rod is rotatably connected to the guide wheel, and the guide wheel is slidably set in the slide rail of the side wall of the track.

[0015] Furthermore, a mold cavity is provided in the middle of the bottom mold, and the mold cavity is the outer contour of the motor housing. When the top wall of the top mold fits coplanar with the bottom mold, the inner liner body of the top mold can be embedded in the mold cavity of the bottom mold, and the mold cavity of the bottom mold and the inner liner body of the top mold are combined to form a mold cavity, which is 1 / 2 the shape of a motor housing, and the top wall of the top mold is provided with an injection hole connected to the mold cavity.

[0016] Furthermore, ventilation ducts are provided in the bottom mold at the front and rear sides of the mold cavity, and the ventilation ducts pass through the bottom mold horizontally from left to right but are not connected to the mold cavity.

[0017] Furthermore, a groove is provided on the side wall of the bottom mold near one end of the ventilation component, and a spray port communicating with the mold cavity is provided at the bottom of the groove.

[0018] Technical effects and advantages of the present invention:

[0019] The present invention is provided with a lifting transmission assembly, a forward and reverse driving assembly, a powder loading assembly and a ventilation assembly, which is beneficial to switching the direction of the forward and reverse driving assemblies to change the lifting direction of the left and right racks, thereby realizing the alternating action on the top mold and the powder loading assembly and the ventilation assembly. When the left rack carries the top mold to complete the mold closing, the right rack pulls the piston rod and the push rod upward through the connecting frame, so that the graphite powder is sucked into the powder collecting pipe through the powder conveying pipe and the feed one-way valve, and automatic feeding is completed. At the same time, the air path switching part loses the pressure of the push rod and rotates elastically, so that the path for conveying the paint is closed, and finally the airflow enters the ventilation duct only through the air collecting box. , continuous ventilation airflow exchanges heat with the molten metal in the cavity to accelerate cooling and molding; on the contrary, when the left rack carries the top mold to open the mold, the right rack pushes the piston rod and the push rod downward through the connecting frame, so that the graphite powder in the powder collecting tube is sprayed into the powder collecting box through the discharge one-way valve, and at the same time, the air path switching part is pressed by the push rod and rotates elastically, so that the path for conveying the coating is opened, and finally the graphite powder enters the bottom mold under the blowing of the airflow. Through the alternation of casting molding and coating lubrication, and the use of an integrated automated processing method, the surface finish of the casting can be significantly improved, the demoulding efficiency and the quality of the final product can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the structure and its local cross-section.

[0022] Figure 3 For the present invention Figure 2 A further schematic cross-sectional view of the structure.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the remaining structure after removing the powder loading component and the ventilation component.

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point B in the middle.

[0026] Figure 7 For the present invention Figure 3 Schematic diagram of the connection structure between the midsole mold, the lifting transmission assembly, the powder applying assembly and the ventilation assembly.

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C in the middle.

[0028] The accompanying drawings are marked as follows: 1. processing table; 2. bottom mold; 3. top mold; 4. lifting transmission assembly; 401. track; 402. rack; 403. balance limiter; 4031. slide bar; 4032. U-shaped connecting rod; 4033. guide wheel; 5. forward and reverse drive assembly; 501. vertical plate; 502. transmission shaft; 503. gear; 504. reversible motor; 6. powder loading assembly; 601. powder collecting pipe; 602. piston rod; 603. connecting frame; 604. discharge One-way valve; 605, feed one-way valve; 606, powder conveying pipe; 607, push rod; 7, ventilation assembly; 701, air collecting box; 702, powder collecting box; 703, air path switching component; 7031, positioning shaft; 7032, swivel; 7033, first connecting arm; 7034, first sealing disk; 7035, second connecting arm; 7036, second sealing disk; 7037, force plate; 7038, spring; 7039, elastic telescopic rod; 704, connecting pipe. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The casting device for motor housing production involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0030] Reference Figure 1-8 The present invention provides a casting device for producing a motor housing, comprising a processing table 1, a bottom mold 2 installed on the top of the processing table 1, and a top mold 3 movably covering the top of the bottom mold 2, two sets of lifting transmission components 4 arranged opposite to each other are installed on the top of the left and right ends of the bottom mold 2, the two sets of lifting transmission components 4 are connected by a forward and reverse driving component 5, and the lifting transmission directions of the left and right lifting transmission components 4 are opposite, and the lifting directions of the left and right racks 402 are reversed by switching the driving direction of the forward and reverse driving component 5, thereby realizing the alternating effect on the top mold 3 and the powder loading component 6 and the ventilation component 7, wherein the left lifting transmission component 4 can carry the top mold 3 to move vertically during the lifting transmission to complete the mold opening and closing process, and the right lifting transmission component 4 acts on the powder loading component 6 and the ventilation component 7 during the lifting transmission, so that the powder loading component 6 completes automatic feeding or spraying, and completes the switching of the exhaust and feeding paths of the ventilation component 7, so as to alternately cool the mold cavity of the bottom mold 2 for heat exchange or apply film to the mold cavity.

[0031] In this embodiment, it should be specifically explained that a mold cavity is provided in the middle of the bottom mold 2, and the mold cavity is the outer contour of the motor housing. When the top wall of the top mold 3 is coplanar with the bottom mold 2, the liner body of the top mold 3 can be embedded in the mold cavity of the bottom mold 2, and the mold cavity of the bottom mold 2 and the liner body of the top mold 3 are enclosed to form a mold cavity, which is 1 / 2 the shape of the motor housing. The top wall of the top mold 3 is provided with an injection hole connected to the mold cavity. When the top mold 3 covers the top opening of the bottom mold 2, the metal melt in the syringe can be injected into the mold cavity through the injection hole on the top wall of the top mold 3 to complete the metal mold casting;

[0032] The bottom mold 2 is also provided with ventilation ducts on both sides of the front and rear of the mold cavity. The ventilation ducts penetrate the bottom mold 2 horizontally from left to right but are not connected to the mold cavity. When the air flows out through the ventilation ducts, the continuous ventilation airflow exchanges heat with the molten metal in the mold cavity, thereby accelerating the molding speed of the motor housing casting.

[0033] A groove is provided on the side wall of the bottom mold 2 near one end of the ventilation assembly 7, and a spray port communicating with the cavity is provided at the bottom of the groove. During the injection molding process, the spray port is blocked by the sealing plug of the elastic telescopic rod 7039 to prevent the molten material in the cavity from leaking;

[0034] The viewing angles mentioned in this article are customized and are divided based on the normal viewing angle.

[0035] Reference Figure 2-3 and Figure 5-6 The lifting transmission assembly 4 includes a track 401, a rack 402 and a balance stopper 403, wherein the track 401 is fixedly mounted on the top walls of the left and right ends of the bottom mold 2, the inner side of the track 401 is slidably connected to the balance stopper 403, and the end of the balance stopper 403 away from the track 401 is connected to the rack 402;

[0036] The forward and reverse drive assembly 5 includes a vertical plate 501, a transmission shaft 502, a gear 503 and a reversible motor 504, wherein the vertical plate 501 is fixedly mounted on the top wall of the processing table 1, the transmission shaft 502 is rotatably sleeved on the vertical plate 501 through a bearing, and one end of the transmission shaft 502 is fixedly connected to the output shaft of the reversible motor 504 through a coupling, and the other end of the transmission shaft 502 is fixedly sleeved with the gear 503, and the gear 503 is located between the left and right racks 402 and meshed with them, wherein the setting position of the gear 503 can at least meet the lifting and lowering requirements of the rack 402, for example, when the left rack 402 carries the top mold 3 to close the mold, the right rack 402 pulls the piston rod 602 and the push rod 607 upward through the connecting frame 603, and the piston rod 602 is pulled upward and moved along the inner cavity of the powder collecting tube 601 to complete automatic loading, and the push rod 607 removes the pressure on the force plate 7037, so that the path for conveying paint is closed.

[0037] In this embodiment, it should be specifically explained that the balance limit member 403 includes a slide bar 4031, a U-shaped connecting rod 4032 and a guide wheel 4033, wherein one end of the slide bar 4031 is fixedly connected to the bottom end of the rack 402, and the other end of the slide bar 4031 is slidably connected in the slide groove of the track 401, and the two sides of the slide bar 4031 close to one end of the track 401 are fixedly connected with the U-shaped connecting rod 4032, and the end of the U-shaped connecting rod 4032 is rotatably connected with the guide wheel 4033, and the guide wheel 4033 is slidably set in the slide rail of the side wall of the track 401. Through the setting of the balance limit member 403, it is ensured that the rack 402 can move vertically stably and smoothly along the track 401 under the transmission of the gear 503.

[0038] Reference Figure 2-4 and Figure 7-8 The powder loading assembly 6 includes a powder collecting pipe 601, a piston rod 602, a connecting frame 603, a discharge one-way valve 604, a feed one-way valve 605 and a powder conveying pipe 606, wherein the powder collecting pipe 601 is fixedly mounted on the track 401, and a piston rod 602 is movably inserted in the powder collecting pipe 601, and the rod body of the piston rod 602 movably penetrates the top wall of the powder collecting pipe 601 and is fixedly connected to the connecting frame 603, and the connecting frame 603 is fixedly mounted below the rack 402 and the balance limiter 403, and a discharge one-way valve 604 and a feed one-way valve 605 communicating therewith are arranged at the bottom end of the powder collecting pipe 601, wherein the feed one-way valve 605 is connected to a supply source of graphite micro powder through the powder conveying pipe 606;

[0039] The powder loading assembly 6 also includes a push rod 607, the top of which is fixedly connected to the connecting frame 603, and the bottom of which extends downward and is inserted into the insert tube on the top wall of the gas collecting box 701. When the push rod 607 is lifted up to the maximum height, the bottom of the push rod 607 is still not completely pulled out of the insert tube, which enables the push rod 607 to be smoothly inserted into the inner cavity of the gas collecting box 701 and press the force plate 7037, and on the other hand, the push rod 607 and the insert tube are wrapped into a sealed structure to prevent the airflow received by the gas collecting box 701 from leaking out.

[0040] The ventilation assembly 7 includes an air collecting box 701, a powder collecting box 702, an air circuit switching member 703 and a connecting pipe 704, wherein the air collecting box 701 is fixedly mounted on the outer wall of the bottom mold 2 on the same side as the powder loading assembly 6, the air collecting box 701 is fixedly equipped with a powder collecting box 702 covered in the groove of the side wall of the bottom mold 2, the air circuit switching member 703 is rotatably arranged in the powder collecting box 702, and the side wall of the air collecting box 701 away from the bottom mold 2 is fixedly connected with a connecting pipe 704, and the connecting pipe 704 is connected to the fan;

[0041] The gas circuit switching component 703 includes a positioning shaft 7031, a swivel 7032, a first connecting arm 7033, a first sealing disk 7034, a second connecting arm 7035, a second sealing disk 7036, a force plate 7037, a spring 7038 and an elastic telescopic rod 7039, wherein one end of the positioning shaft 7031 is fixedly assembled in the groove of the bottom mold 2, and the other end thereof is rotatably sleeved on the swivel 7032, and the end side of the swivel 7032 is fixedly connected to the first sealing disk 7034 through the first connecting arm 7033, and the first connecting arm 7033 is fixedly connected to the second sealing disk 7036 through the second connecting arm 7035, and a force plate 7037 located below the push rod 607 is also fixedly installed on the first connecting arm 7033, wherein the force plate 7037 is elastically connected to the top wall of the air collecting box 701 through the spring 7038, and an elastic telescopic rod 7039 is also fixedly installed below the swivel 7032.

[0042] In this embodiment, it should be specifically explained that the ventilation duct of the bottom mold 2 and the air injection hole of the powder collecting box 702 are respectively located on the rotation track of the first sealing disk 7034 and the second sealing disk 7036, and the injection port of the bottom mold 2 is located on the rotation track of the elastic telescopic rod 7039. When the force plate 7037 is pressed by the push rod 607, the first sealing disk 7034, the second sealing disk 7036 and the elastic telescopic rod 7039 arranged on the rotating ring 7032 can be rotated by the positioning shaft 703 1 is the axis that rotates downward, so that the path for conveying the paint is opened, that is, the first sealing disk 7034 blocks the ventilation duct, and the second sealing disk 7036 withdraws from blocking the air injection hole of the powder collecting box 702, and the sealing plug of the elastic telescopic rod 7039 also leaves the injection port on the side wall of the bottom mold 2, so that the connecting pipe 704 receives the air flow of the fan through the air collecting box 701 and the air injection hole and passes into the powder collecting box 702, and finally carries the graphite powder in the powder collecting box 702 and blows it into the mold cavity of the bottom mold 2 through the injection port;

[0043] The sealing plug of the elastic telescopic rod 7039 is conical and fits with the injection port, so that when it rotates with the swivel 7032, it can move out along the inclined surface of the injection port. On the contrary, when it enters the injection port, it can completely seal the injection port to prevent the metal melt in the cavity from leaking out.

[0044] Working principle of the present invention:

[0045] Start the reversible motor 504, and the output shaft of the reversible motor 504 drives the transmission shaft 502 and the gear 503 connected thereto in sequence to rotate coaxially counterclockwise through the coupling, so that the two racks 402 meshing with the left and right sides of the gear 503 move opposite to each other, wherein the left rack 402 slides smoothly downward along the track 401 by virtue of the balancing limiter 403 connected thereto, causing the top mold 3 connected to the bottom end of the rack 402 to vertically descend until the top mold 3 covers the top opening of the bottom mold 2. At this time, a cavity for casting the motor housing is formed between the bottom mold 2 and the top mold 3, and molten metal can be injected into the cavity by virtue of the injection hole on the top wall of the top mold 3. At the same time, the right rack 402 slides smoothly upward along the track 401 by virtue of the balancing limiter 403 connected thereto, causing the rack 402 to pull up the piston rod 602 and the push rod 607 through the connecting frame 603, wherein the active When the plug rod 602 is pulled outward along the powder collecting tube 601, negative pressure is formed inside the powder collecting tube 601, so that the graphite powder of the feeding source is sucked into the powder collecting tube 601 through the powder conveying tube 606 and the feeding one-way valve 605, and the material is automatically fed to wait for the material to be fed during the coating and lubrication operation. At the same time, the push rod 607 removes the pressure on the force plate 7037, and then the rotating ring 7032 rotates clockwise to reset with the positioning shaft 7031 as the axis under the elastic force of the spring 7038, until the sealing plug of the elastic telescopic rod 7039 blocks the injection port of the side wall of the bottom mold 2, and the second sealing disk 7036 blocks the air injection hole of the powder collecting box 702, and the first sealing disk 7034 removes the obstruction to the ventilation duct, so that the airflow of the fan received by the connecting pipe 704 enters the ventilation duct only through the air collecting box 701, and the continuous ventilation airflow exchanges heat with the metal melt in the cavity to accelerate cooling and molding;

[0046] After the molten metal in the cavity is formed, the reversible motor 504 is driven again and the output direction is switched. At this time, the output shaft of the reversible motor 504 drives the transmission shaft 502 and the gear 503 to rotate coaxially clockwise through the coupling, so that the racks 402 on the left and right sides change their moving direction, that is, the left rack 402 drives the top mold 3 to rise, so that the top opening of the bottom mold 2 is exposed, which is convenient for taking out the motor housing formed in the bottom mold 2, and the right rack 402 gradually pushes the piston rod 602 and the push rod 607 downward through the connecting frame 603, which compresses the inner cavity of the powder collecting tube 601 on the one hand, so that the graphite powder in the powder collecting tube 601 is sprayed into the powder collecting box 702 through the discharge one-way valve 604, and on the other hand The push rod 607 presses the force plate 7037 downward, causing the rotating ring 7032 to rotate counterclockwise with the positioning shaft 7031 as the axis and the tension spring 7038 until the first sealing disk 7034 blocks the ventilation duct, and the second sealing disk 7036 withdraws from the obstruction of the air injection hole of the powder collecting box 702, and the sealing plug of the elastic telescopic rod 7039 also leaves the injection port on the side wall of the bottom mold 2, so that the connecting pipe 704 receives the air flow of the fan through the air collecting box 701 and the air injection hole and passes into the powder collecting box 702, and finally carries the graphite powder in the powder collecting box 702 through the injection port and blows it into the mold cavity of the bottom mold 2, so that the inner wall of the mold cavity can be attached with graphite powder to form an isolation layer, so as to prepare for the next wheel casting;

[0047] By alternating the casting and coating lubrication mentioned above and adopting an integrated automated processing method, the surface finish of the casting can be significantly improved, and the demoulding efficiency and the quality of the final product can be improved.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or modifications within the technical scope disclosed by the present invention; according to the technical plan and its improved conception of the present invention, all of which should be included under the protection of the present invention.

Claims

1. A casting device for producing a motor housing, comprising a processing table (1), a bottom mold (2) mounted on the top of the processing table (1), and a top mold (3) movably covering the top of the bottom mold (2), characterized in that: Two sets of lifting transmission components (4) arranged opposite to each other are installed at the top of the left and right ends of the bottom mold (2). The two sets of lifting transmission components (4) are connected to each other through a forward and reverse driving component (5), and the lifting transmission directions of the left and right lifting transmission components (4) are opposite. During the lifting transmission, the left lifting transmission component (4) carries the top mold (3) to move vertically to complete the mold opening and closing process, while during the lifting transmission, the right lifting transmission component (4) acts on the powder loading component (6) and the ventilation component (7), so that the powder loading component (6) completes automatic material loading or spraying, and completes the switching of the exhaust and material feeding paths of the ventilation component (7), so as to alternately cool the mold cavity of the bottom mold (2) or apply film to the mold cavity; The lifting transmission assembly (4) comprises a track (401), a rack (402) and a balancing stopper (403), wherein the track (401) is fixedly mounted on the top wall of the end of the bottom mold (2), the inner side of the track (401) is slidably connected to the balancing stopper (403), and the end of the balancing stopper (403) away from the track (401) is connected to the rack (402); The powder loading assembly (6) comprises a powder collecting pipe (601), a piston rod (602), a connecting frame (603), a discharge one-way valve (604), an inlet one-way valve (605) and a powder conveying pipe (606), wherein the powder collecting pipe (601) is fixedly mounted on the track (401), a piston rod (602) is movably inserted into the powder collecting pipe (601), and the rod body of the piston rod (602) movably penetrates the top wall of the powder collecting pipe (601) and is fixedly connected to the connecting frame (603). , and the connecting frame (603) is fixedly assembled below the rack (402) and the balance stopper (403); the bottom end of the powder collecting pipe (601) is provided with a discharge check valve (604) and a feed check valve (605) which are in communication therewith, wherein the feed check valve (605) is in communication with a graphite micro powder supply source via a powder conveying pipe (606); the powder loading assembly (6) further comprises a push rod (607), the top end of which is fixedly connected to the connecting frame (603); The ventilation assembly (7) comprises an air collecting box (701), a powder collecting box (702), an air path switching component (703) and a connecting pipe (704), wherein the air collecting box (701) is fixedly mounted on the outer wall of the bottom mold (2) on the same side as the powder loading assembly (6), the air collecting box (702) is fixedly mounted inside the air collecting box (701) and covered in the groove of the side wall of the bottom mold (2), the air path switching component (703) is rotatably arranged inside the powder collecting box (702), the side wall of the air collecting box (701) away from the bottom mold (2) is fixedly connected with a connecting pipe (704), and the connecting pipe (704) is connected to the fan; the bottom end of the push rod (607) extends downward and is inserted into the insert tube of the top wall of the air collecting box (701), and when the push rod (607) is lifted up to the maximum height, the bottom end of the push rod (607) is still not completely pulled out of the insert tube; The gas path switching member (703) comprises a positioning shaft (7031), a rotating ring (7032), a first connecting arm (7033), a first sealing disk (7034), a second connecting arm (7035), a second sealing disk (7036), a force plate (7037), a spring (7038) and an elastic telescopic rod (7039), wherein one end of the positioning shaft (7031) is fixedly assembled in a groove of the bottom mold (2), and the other end thereof is rotatably sleeved on the rotating ring (7032), and the end side of the rotating ring (7032) is connected to the bottom mold (2) by the first connecting arm (7035). The connecting arm (7033) is fixedly connected to a first sealing disk (7034), and the first connecting arm (7033) is fixedly connected to a second sealing disk (7036) via a second connecting arm (7035); a force-bearing plate (7037) located below the push rod (607) is also fixedly mounted on the first connecting arm (7033), wherein the force-bearing plate (7037) is elastically connected to the top wall of the air collecting box (701) via a spring (7038); and an elastic telescopic rod (7039) is also fixedly mounted below the rotating ring (7032); The ventilation duct of the bottom mold (2) and the air injection holes of the powder collecting box (702) are respectively located on the rotation trajectory of the first sealing disk (7034) and the second sealing disk (7036), while the injection port of the bottom mold (2) is located on the rotation trajectory of the elastic telescopic rod (7039), and the sealing plug of the elastic telescopic rod (7039) is conical and fits with the injection port.

2. A casting device for producing a motor housing according to claim 1, characterized in that: The forward and reverse drive assembly (5) comprises a vertical plate (501), a transmission shaft (502), a gear (503) and a reversible motor (504), wherein the vertical plate (501) is fixedly mounted on the top wall of the processing table (1), the transmission shaft (502) is rotatably sleeved on the vertical plate (501) via a bearing, one end of the transmission shaft (502) is fixedly connected to an output shaft of the reversible motor (504) via a coupling, and the other end of the transmission shaft (502) is fixedly sleeved to the gear (503), and the gear (503) is located between the left and right racks (402) and meshes with them.

3. A casting device for producing a motor housing according to claim 1, characterized in that: The balancing limiter (403) comprises a sliding rod (4031), a U-shaped connecting rod (4032) and a guide wheel (4033), wherein one end of the sliding rod (4031) is fixedly connected to the bottom end of the rack (402), and the other end of the sliding rod (4031) is slidably connected in a slide groove of the track (401), and the two sides of the sliding rod (4031) close to one end of the track (401) are fixedly connected with the U-shaped connecting rod (4032), and the end of the U-shaped connecting rod (4032) is rotatably connected with the guide wheel (4033), and the guide wheel (4033) is slidably arranged in a slide rail of a side wall of the track (401).

4. A casting device for producing a motor housing according to claim 1, characterized in that: A mold cavity is provided in the middle of the bottom mold (2), and the mold cavity is the outer contour of the motor housing. When the top wall of the top mold (3) is coplanar with the bottom mold (2), the inner liner body of the top mold (3) can be embedded in the mold cavity of the bottom mold (2), and the mold cavity of the bottom mold (2) and the inner liner body of the top mold (3) are enclosed to form a mold cavity, which is 1 / 2 the shape of the motor housing. The top wall of the top mold (3) is provided with an injection hole that communicates with the mold cavity.

5. A casting device for producing a motor housing according to claim 1, characterized in that: The bottom mold (2) is also provided with ventilation ducts located at the front and rear sides of the mold cavity, and the ventilation ducts pass through the bottom mold (2) horizontally from left to right but are not connected to the mold cavity.

6. A casting device for producing a motor housing according to claim 1, characterized in that: A groove is provided on the side wall of the bottom mold (2) close to one end of the ventilation component (7), and a spray port communicating with the mold cavity is provided at the bottom of the groove.

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