Motor casing casting process and paint pool

Abstract

The application relates to the technical field of lost foam casting, and discloses a motor shell casting process and a coating pool, the motor shell casting process comprises the following steps: step one: forming a mold sample consistent with the shape of a motor shell by combining pre-expanding, shaping and bonding of foam beads; step two: bonding a plurality of shaped mold samples and a sprue together to form a mold cluster; step three: placing the mold cluster into the coating pool, immersing the mold cluster below the liquid level of the coating pool and disturbing the mold cluster to perform dip coating of refractory coating, and performing drying after coating of the mold cluster; step four: burying the mold cluster into a sand box and making a sprue on the sprue to protrude above the sand surface, and then vibrating the sand box; step five: pouring molten metal from the sprue on the sprue under the condition that the sand box is in a negative pressure state, the molten metal makes the foam gasify and gradually fill the space occupied by the foam; and step six: taking the casting out of the sand box after the molten metal cools and solidifies. The application can improve the comprehensiveness of the adhesion of the coating to the mold cluster.

Description

Technical Field

[0001] This application relates to the technical field of lost foam casting, and in particular to a casting process for motor housings and a coating pool. Background Technology

[0002] Currently, in the processing and production of motor housings, both low-pressure casting and high-pressure casting are inefficient. Lost foam casting is more commonly used. This process typically involves bonding multiple foam models of the same type together to form a cluster, coating the cluster with refractory paint and drying it, then placing the cluster in a sand box and filling it with molding sand. Finally, the sand is poured through a gating gate to vaporize and disappear the foam model, resulting in a metal casting that matches the foam model.

[0003] In lost foam casting, coatings enhance model strength, prevent model breakage during pouring, and improve the surface quality of the casting. Currently, coating the mold clusters typically involves setting up a coating tank where the mold clusters are placed for coating. Since the mold clusters float on the surface of the coating slurry, usually one or two workers are needed to rotate the mold clusters and scoop coating onto them for application. However, the surface structure of motor housings is complex, and this method can easily lead to some areas of the mold cluster being missed during coating, affecting the casting effect of the motor housing. Summary of the Invention

[0004] To improve the overall adhesion of coatings to modules, this application provides a motor housing casting process and a coating pool.

[0005] In a first aspect, this application provides a casting process for an electric motor housing, comprising the following steps: Step 1: White mold making. Foam beads are pre-expanded, molded, and glued together to form a shape that matches the motor housing. Step 2: Mold cluster assembly, which involves bonding multiple molded patterns together with the sprue to form a mold cluster; Step 3: Apply coating. Place the mold cluster into the coating tank, immerse the mold cluster below the surface of the coating tank, and agitate the mold cluster to apply the refractory coating. After coating, dry the mold cluster. Step 4: Embedding and compacting the sand box. Embed the mold cluster into the sand box and make the gate on the gating system protrude from the surface of the molding sand. Then compact the sand box. Step 5: Pouring and displacement. Under negative pressure in the sand box, molten metal is poured into the gating from the gate on the gating system. The molten metal vaporizes the foam and gradually fills the space occupied by the foam. Step Six: Remove the casting. After the molten metal cools and solidifies, remove the casting from the sand box.

[0006] By employing the above technical solution, the overall coating coverage of the mold clusters is improved and the probability of the mold clusters not adhering to the coating is reduced by immersing and agitating them in the coating tank. Simultaneously, the coating in the tank is agitated to ensure a uniform coating concentration.

[0007] Secondly, this application provides a coating tank for implementing the coating step in the above-mentioned motor housing casting process, employing the following technical solution: A paint tank includes: a tank body, a rotating shaft, a connecting seat, a power component, a drive component, and a limiting component. The tank body has an upward-facing loading cavity. The connecting seat is rotatably mounted on the rotating shaft. The limiting component has two sets installed on opposite sides of the rotating shaft. The limiting component has a storage cavity for placing a mold cluster. The storage cavity is in communication with the external environment. The pool has a rotating position and a loading / unloading position. The power component is installed in the pool and connected to the connecting seat to drive the connecting seat and the rotating shaft to move up and down in the pool, so that the rotating shaft moves to the rotating position or the loading / unloading position. When the rotating shaft moves to the rotating position, the placement cavity is immersed in the slurry in the pool, and the rotating shaft cooperates with the driving component, which can drive the rotating shaft and the limiting component to rotate in the pool; when the rotating shaft moves to the upper and lower material positions, the two sets of limiting components are distributed vertically, and the placement cavity of one set of limiting components moves upward away from the pool.

[0008] By adopting the above technical solution, the mold cluster is placed in the placement cavity, and the rotating shaft drives the limiting component and the mold cluster to move below the liquid surface of the pool, so that the mold cluster is completely immersed in the slurry in the pool. The driving component drives the limiting component and the mold cluster to rotate in the pool, causing the mold cluster to agitate, allowing the coating to adhere to all parts of the mold cluster, improving the overall adhesion of the coating, and stirring and mixing the slurry in the pool to achieve a uniform coating concentration. When the rotating shaft moves to the loading / unloading position, the mold cluster can be picked up and placed. While one limiting component is being loaded / unloaded, the other limiting component keeps the mold cluster submerged in the coating, extending the immersion time of the mold cluster, resulting in more comprehensive coating and improved processing efficiency.

[0009] Optionally, the driving component includes a rotation source and a snap-fit ​​strip. The rotation source is mounted on the pool body and cooperates with the snap-fit ​​strip to drive the snap-fit ​​strip to rotate. The snap-fit ​​strip abuts against the inner wall of the pool body. The inner wall of the pool body is also provided with a guide strip that extends vertically and is opposite to the snap-fit ​​strip. The end of the rotation shaft has a snap-fit ​​groove. When the snap-fit ​​strip rotates to the point where its length extends vertically, the rotation shaft slides up and down on the guide strip and the snap-fit ​​strip through the snap-fit ​​groove. When the rotation shaft is opposite to the rotation position, the rotation shaft is fully engaged with the snap-fit ​​strip.

[0010] By adopting the above technical solution, the rotating shaft, in cooperation with the guide strip and the locking strip, restricts its rotation during vertical movement, thereby improving the stability of the limiting components during mold loading and unloading. Furthermore, when the rotating shaft is fully engaged with the locking strip, the rotation source drives the locking strip to rotate, which in turn drives the rotating shaft to rotate together, allowing the positions of the two limiting components to change alternately.

[0011] Optionally, each set of limiting components includes an isolation fence, a receiving fence, and a limiting fence. The isolation fence is connected to the rotation shaft. Each set of limiting components has two receiving fences and two limiting fences. The two receiving fences are respectively installed on opposite sides of the isolation fence, and the two limiting fences are respectively installed on opposite sides of the isolation fence. The limiting fences and the receiving fences correspond one-to-one, and the limiting fences are further away from the rotation shaft than the receiving fences. When the extension plate of the limiting fence is parallel to the extension plate of the receiving fence and both are perpendicular to the extension plate of the isolation fence, the storage cavity is formed in the space enclosed by the isolation fence, the receiving fence and the limiting fence, and when the rotating shaft is opposite to the upper and lower material positions, the extension plate of the isolation fence is vertically arranged.

[0012] By adopting the above technical solution, the isolation fence, the receiving fence, and the limiting fence together enclose and form a storage cavity, so that the module can be placed into the storage cavity from the side of the receiving fence and the limiting fence away from the isolation fence.

[0013] Optionally, the limiting fence is hinged to the isolation fence, and the limiting fence and the pool body have a linkage component. When the rotating shaft moves to the rotating position, the limiting fence is rotated to be perpendicular to the isolation fence by the linkage component. When the rotating shaft moves to the loading / unloading position, the limiting fence is rotated to be parallel to the isolation fence by the linkage component.

[0014] By adopting the above technical solution, when the limiting fence rotates to be perpendicular to the isolation fence, the limiting fence restricts the module, making it difficult for the module to detach from the placement cavity during rotation within the pool. When the limiting fence is parallel to the isolation fence, the module is placed on the receiving fence and away from the liquid surface of the pool, allowing excess paint on the module to drip back into the pool through the receiving fence, while paint dripping from the limiting fence is less likely to fall onto the module.

[0015] Optionally, the linkage component includes An adjusting seat is movable on the end face of the isolation fence facing the inner end wall of the pool. The direction of movement of the adjusting seat is perpendicular to the extension plate surface of the isolation fence. One side of the adjusting seat has a guide slope. A fixing seat is provided on the end wall of the isolation fence and is opposite to the adjusting seat; A reset element is disposed between the adjusting seat and the fixed seat, and is used to give the adjusting seat a tendency to move away from the fixed seat; A linkage component, disposed between the adjusting seat and the limiting rail, is used to rotate the limiting rail in conjunction with the movement of the adjusting seat; and A connecting rod is attached to the inner wall of the pool. When the rotating shaft moves upward from the rotating position to the loading / unloading position, the abutting rod abuts against the guide slope, thereby driving the adjusting seat to gradually move closer to the reset member; and the adjusting seat has a clearance groove, which is used to allow the abutting rod to make way when the rotating shaft rotates at the rotating position.

[0016] By adopting the above technical solution, through the cooperation of the abutment rod, the adjusting seat and the reset component, the adjusting seat moves to one side of the isolation fence when the rotating axis moves upward, and moves to the other side when the rotating axis moves downward, so as to adjust the rotation angle of the limiting fence.

[0017] Optionally, the linkage includes a gear and a rack, the gear corresponds one-to-one with the limiting fence and is connected to the end of the corresponding limiting fence, the gears on two limiting fences in the same group of limiting components mesh with each other, and the rack is connected to the adjusting seat and meshes with one of the gears.

[0018] By adopting the above technical solution, when the abutment rod pushes the adjusting seat to move, it drives the rack to move, and through the movement of the gear, it drives the gear to rotate, thereby driving the limit fence to rotate.

[0019] Optionally, the reset component includes a spring and a guide rod. The guide rod is connected to the adjusting seat and slides along the extension plate perpendicular to the isolation fence onto the fixed seat. The spring abuts between the adjusting seat and the fixed seat and is sleeved on the outer wall of the guide rod.

[0020] By adopting the above technical solution, the guide rod cooperates with the fixed seat to guide the movement direction of the adjusting seat, and the spring provides the elastic force to reset the adjusting seat.

[0021] Optionally, the reset component further includes a locking block disposed at the end of the guide rod away from the adjusting seat, the locking block preventing the guide rod from disengaging from the fixing seat in the direction closer to the adjusting seat.

[0022] By adopting the above technical solution, the anti-detachment block restricts the guide rod from detaching from the fixed seat, thereby improving the stability of the adjusting seat.

[0023] Optionally, the inner walls of the pool body at both ends are inclined in the same direction from top to bottom.

[0024] By adopting the above technical solution, during the process of the rotating shaft driving the limiting component and the mold cluster to rotate in the pool, the inclination of the inner wall of the pool can drive the mold cluster to move, thereby increasing the stroke of the mold cluster in the pool and making it easier for the coating to adhere to the mold cluster more fully.

[0025] In summary, this application includes at least one of the following beneficial effects: 1. When coating the mold cluster, immerse the mold cluster below the surface of the coating tank and agitate it to allow the coating to adhere to all parts of the mold cluster, thereby improving the overall adhesion of the coating to the mold cluster. At the same time, the coating is stirred during the agitation of the mold cluster to equalize the coating concentration in the coating tank and improve the quality of coating adhesion to the mold cluster.

[0026] 2. By setting two sets of limiting components and rotating the rotating shaft to drive the two sets of limiting components to change positions, when loading and unloading one set of limiting components, the other set of limiting components with the mold cluster is completely immersed in the pool, thereby improving the efficiency of coating the mold cluster. Furthermore, the complete immersion of the mold cluster in the pool makes it less likely for coating to be missed on the surface of the mold cluster, thus improving the overall adhesion of coating to the mold cluster. 3. When the receiving fence drives the mold cluster upward away from the slurry in the pool, the limiting fence moves away from the position opposite to the mold cluster so that the mold cluster can drain excess paint into the pool. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the motor housing structure; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this application; Figure 3 This is a schematic diagram of the limiting component in Embodiment 2 of this application; Figure 4 This is a half-sectional view of Embodiment 2 of this application; Figure 5 yes Figure 3Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the structure of the limiting fence adjusted to a vertical state in Embodiment 2 of this application; Figure 7 This is a schematic diagram of the structure of the limiting fence adjusted to a horizontal state in Embodiment 2 of this application; Figure 8 yes Figure 6 A magnified structural diagram at point B in the middle.

[0028] Explanation of reference numerals in the attached drawings: 1. Pool body; 2. Rotating shaft; 3. Connecting seat; 4. Power component; 41. Cylinder; 42. Connecting rod; 43. Extension rod; 5. Driving component; 51. Rotation source; 52. Snap-fit ​​strip; 6. Limiting component; 61. Isolation fence; 62. Receiving fence; 63. Limiting fence; 7. Loading chamber; 8. Storage chamber; 9. Guide strip; 10. Snap-fit ​​groove; 11. Adjusting seat; 12. Guide slope; 13. Fixed seat; 14. Reset component; 141. Spring; 142. Guide rod; 143. Anti-detachment block; 15. Linkage component; 151. Gear; 152. Rack; 16. Abutment rod; 17. Relief groove; 18. Hinge seat; 19. Rotating position; 20. Loading / unloading position. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0030] Example 1: This application discloses a casting process for motor housings. It includes the following steps: Step 1: White mold making. First, use steam to pre-foam the foam particles, making them expand to more than 30 times their original size. Then, ventilate and dry the foam particles to mature them. After drying, inject the foam particles into the lost foam mold cavity and heat them to make the foam particles expand again and fuse together to form models of different parts of the motor housing. Then, glue the models together to make them look like the whole motor housing.

[0031] Step 2: Mold cluster assembly, which involves bonding multiple molded patterns together with the gating system to form a mold cluster.

[0032] Step 3: Apply coating. Place the mold cluster into the coating tank, immersing it below the surface of the coating liquid and agitating it to apply the refractory coating. After coating, place the mold cluster into a drying room with circulating hot air at 45-55℃ for drying.

[0033] Step 4: Compacting the sand box. Place the sand box on the vibrating table. First, fill the bottom of the sand box with a layer of base sand, then put the mold cluster into the sand box. Add sand to the sand box until the molding sand is close to the bottom of the gating gate. Vibrate the vibrating table throughout the sand adding process to compact the molding sand.

[0034] Step 5: Casting and replacement. The surface of the sand box is sealed with a plastic film. Then, the sand box is evacuated to make the sand particles compact. Then, under negative pressure, molten metal is poured into the sand box from the gate on the gating system. The molten metal vaporizes the mold cluster and gradually fills the space occupied by the foam.

[0035] Step Six: Removal of parts. After the molten metal cools and solidifies, the sand box is flipped over so that the casting and molding sand fall out of the sand box together and separate from each other. The molding sand enters the sand treatment system for recycling, and the casting enters the shot blasting machine to remove the surface coating.

[0036] Example 2: This application discloses a coating tank, suitable for use in... Figure 1 The motor housing shown in the example is coated with paint as described in Example 1. The mold cluster is formed by bonding together a gating system and multiple motor housing patterns. (Refer to...) Figure 2 The paint tank includes a tank body 1, a rotating shaft 2, a connecting seat 3, a power component 4, a driving component 5, and a limiting component 6.

[0037] Reference Figure 2 and Figure 3 The pool body 1 is square in shape and has an upward-facing loading cavity 7. The pool body 1 is filled with refractory coating slurry in the loading cavity 7. The rotating shaft 2 is round in shape. There are two connecting seats 3, which are respectively rotatably sleeved on the two ends of the rotating shaft 2 that are far apart from each other. There are two sets of limiting members 6, which are respectively distributed on opposite sides of the rotating shaft 2. The limiting members 6 are hollow in shape. Each set of limiting members 6 has a storage cavity 8. The storage cavity 8 is connected to the outside through the hollow part of the limiting member 6, and the storage cavity 8 is used to place the mold cluster.

[0038] Reference Figure 3 and Figure 4 The rotating shaft 2 and the connecting seat 3 are both located inside the pool body 1. The axis of the rotating shaft 2 is parallel to the length direction of the pool body 1. The power component 4 is connected between the connecting seat 3 and the pool body 1 to drive the rotating shaft 2 to move up and down, so that the rotating shaft 2 can move to the rotating position 19 and the upper and lower material positions 20. The rotating position 19 is located in the middle of the pool body 1, and the upper and lower material positions 20 are located near the top opening of the pool body 1. When the rotating shaft 2 moves up and down, two sets of limiting components 6 are distributed vertically.

[0039] The drive component 5 is installed at the rotation position 19 of the pool body 1. When the rotating shaft 2 moves to the rotation position 19, it cooperates with the drive component 5. The drive component 5 can drive the rotating shaft 2 to rotate 180° to exchange the positions of the two sets of limiting components 6.

[0040] During coating, the rotating shaft 2 is first moved to the upper / lower material position 20. At this time, the placement cavity 8 of the upper limiting member 6 is above the liquid surface of the pool 1, and the placement cavity 8 of the lower limiting member 6 is immersed in the coating slurry of the pool 1. The upper limiting member 6 is used to pick up and put down the mold clusters. Then, the rotating shaft 2 is moved down to the rotating position 19. At this time, the placement cavities 8 of both sets of limiting members 6 are immersed in the coating slurry of the pool 1. After the rotating shaft 2 is rotated 180° by the driving member 5, the positions of the two sets of limiting members 6 are swapped. The above operation is then repeated so that when the mold clusters of one set of limiting members 6 are picked up and put down, the mold clusters of the other set of limiting members 6 are immersed in the coating slurry of the pool 1 and move in the pool 1 with the movement of the limiting members 6.

[0041] Reference Figure 2 and Figure 3 Specifically, regarding the power component 4, there are two sets of power components 4, which are respectively located at opposite ends of the pool body 1 along its length. Each set of power components 4 includes a cylinder 41, a connecting rod 42, and an extension rod 43. The cylinder body of the cylinder 41 is detachably mounted to the outer wall of the end of the pool body 1 by bolts. The piston rod of the cylinder 41 is positioned upward and extends vertically. The extension rod 43 is fixed to the connecting seat 3 and extends vertically upward. The two ends of the connecting rod 42, which are far apart from each other, are respectively connected to the piston rod of the cylinder 41 and the top of the extension rod 43. When the piston rod of the cylinder 41 retracts downward, the rotating shaft 2 is located at the rotation position 19. When the piston rod of the cylinder 41 extends upward, it drives the rotating shaft 2 to move upward to the upper or lower material position 20.

[0042] Reference Figure 4 and Figure 5 Regarding the drive unit 5, there are two sets of drive units 5, which are respectively installed at opposite ends of the pool body 1 along its length. Each set of drive units 5 includes a rotation source 51 and a retaining strip 52. The rotation source 51 is a rotating motor, which is installed on the outer wall of the end of the pool body 1. The output end of the rotation source 51 rotates through the pool wall of the pool body 1 and is connected to the center of the retaining strip 52. One side of the retaining strip 52 abuts against the inner wall of the pool body 1. In addition, an O-ring (not shown in the figure) is fitted on the output end of the rotation source 51 to prevent the slurry in the pool body 1 from overflowing from the output end of the rotation source 51.

[0043] The snap-fit ​​strip 52 is a straight strip. The rotation source 51 rotates 180° each time. When the rotation source 51 stops rotating, the length of the snap-fit ​​strip 52 extends vertically. A guide strip 9 is fixed to the inner wall of the end of the pool body 1. The guide strip 9 is a straight strip and extends vertically. The top of the guide strip 9 is close to the top of the pool body 1, and the bottom of the guide strip 9 is close to the snap-fit ​​strip 52. When the snap-fit ​​strip 52 rotates to the vertical extension position, the orthographic projection of the guide strip 9 is consistent with and coincides with the orthographic projection of the snap-fit ​​strip 52.

[0044] A retaining groove 10 is radially formed on the end wall of the rotating shaft 2, passing through opposite sides of the rotating shaft 2. The retaining groove 10 can cooperate with the guide strip 9 and the retaining strip 52. When the rotating shaft 2 is in the rotating position 19, the rotating shaft 2 is sleeved on the retaining strip 52 through the retaining groove 10, and the two ends of the retaining strip 52 that are far apart from each other extend out of opposite sides of the rotating shaft 2. At this time, the rotating source 51 drives the retaining strip 52 to rotate, which can drive the rotating shaft 2 to rotate together. After the retaining strip 52 stops rotating, the piston rod of the cylinder 41 extends upward, which can drive the rotating shaft 2 to move upward from the retaining strip 52 until it slides onto the guide strip 9, so as to prevent the rotating shaft 2 from rotating after it is disengaged from the retaining strip 52.

[0045] Reference Figure 3 and Figure 4 Regarding the limiting components 6, each set of limiting components 6 includes an isolation fence 61, a receiving fence 62, and a limiting fence 63. The isolation fence 61, the receiving fence 62, and the limiting fence 63 are all square grid-shaped. The isolation fence 61 is fixed to the outer wall of the middle section of the rotating shaft 2. The length extension direction of the isolation fence 61 is parallel to the axial direction of the rotating shaft 2. The extension plate surface of the isolation fence 61 extends radially along the rotating shaft 2. The isolation fences 61 in the two sets of limiting components 6 are mirror symmetrical along the rotating shaft 2.

[0046] Each set of limiting components 6 contains two receiving fences 62. The two receiving fences 62 are fixed to the opposite sides of the isolation fence 61. The length extension direction of the receiving fence 62 is consistent with the length extension direction of the isolation fence 61, and the extension plate surface of the receiving fence 62 is perpendicular to the extension plate surface of the isolation fence 61.

[0047] The isolation fence 61 has hinge seats 18 fixed at both ends on the side away from the rotation axis 2. Each set of limiting members 6 contains two limiting fences 63, which are hinged to opposite sides of the hinge seats 18 via hinge shafts. The axis of the hinge shaft of the limiting fence 63 is parallel to the axis of the rotation axis 2. The limiting fences 63 correspond one-to-one with the receiving fences 62. The limiting fences 63 are further away from the rotation axis 2 than the corresponding receiving fences 62, and there is a linkage component between the limiting fences 63 and the pool body 1.

[0048] Reference Figure 4 and Figure 6When the rotating shaft 2 moves from the rotating position 19 to the loading / unloading position 20, the extended plates of the isolation fence 61 are both in a vertical state. The linkage component drives the two limiting fences 63 to rotate until the extended plates of the limiting fences 63 are parallel to the extended plates of the isolation fence 61. At this time, the extended plates of the receiving fence 62 are in a horizontal state, and the lower surface of the receiving fence 62 in the upper limiting member 6 is higher than the liquid level of the pool 1. In this state, the coated mold clusters in the upper limiting member 6 are placed on the receiving fence 62 to drain excess coating into the pool 1, while the coating slurry falling from the vertically set limiting fences 63 is less likely to fall onto the mold clusters, and the mold clusters can be removed and placed.

[0049] Reference Figure 4 and Figure 7 When the rotating shaft 2 moves from the upper / lower material position 20 to the rotating position 19, the linkage component drives the two limiting fences 63 to rotate in opposite directions until the extension plate surface of the limiting fence 63 is parallel to the extension plate surface of the opposite receiving fence 62. At this time, the isolation fence 61, the receiving fence 62 and the limiting fence 63 on the same side together form the storage cavity 8. The side of the limiting fence 63 and the receiving fence 62 away from the isolation fence 61 is close to the inner wall of the pool body 1, so that when the isolation fence 61, the receiving fence 62 and the limiting fence 63 rotate around the rotating shaft 2, the mold cluster is not easy to detach from the opening on the side of the storage cavity 8 away from the isolation fence 61. In addition, the inner wall of the pool body 1 located below the rotation position 19 is a semi-circular arc coaxial with the output end of the rotation source 51, and the radius of the arc part of the pool body 1 is greater than the width of the isolation fence 61, the receiving fence 62 and the limiting fence 63, so that the receiving fence 62 and the limiting fence 63 do not interfere with the inner wall of the pool body 1 when the rotation shaft 2 rotates, and the side of the receiving fence 62 and the limiting fence 63 away from the isolation fence 61 is closer to the inner wall of the pool body 1.

[0050] Reference Figure 4 and Figure 6 The linkage assembly has two sets, each cooperating with one end of the isolation fence 61 that are far apart from each other along its own length. Each set of linkage assemblies includes an adjusting seat 11, a fixing seat 13, a resetting component 14, a linkage component 15, and an abutment rod 16. The fixing seat 13 is a square strip and is fixed to the end face of the isolation fence 61 facing the inner end wall of the pool body 1, and the length extension direction of the fixing seat 13 is parallel to the width direction of the isolation fence 61.

[0051] Reference Figure 6 and Figure 7The adjusting seat 11 abuts against the end face of the isolation fence 61 facing the inner end wall of the pool body 1, and the adjusting seat 11 corresponds to the fixed seat 13. The adjusting seat 11 can move towards or away from the fixed seat 13 in a direction perpendicular to the extension plate surface of the isolation fence 61. The side of the adjusting seat 11 facing the fixed seat 13 is a plane parallel to the fixed seat 13, and the side of the adjusting seat 11 away from the fixed seat 13 is a guide slope 12, which extends inclinedly away from the fixed seat 13 in a direction close to the rotation axis 2.

[0052] Reference Figure 6 and Figure 8 Multiple reset members 14 are provided, and are evenly spaced along the length of the fixed base 13 between the adjusting base 11 and the fixed base 13. Each reset member 14 includes a spring 141, a guide rod 142, and an anti-detachment block 143. One end of the guide rod 142 is fixed to the side of the adjusting base 11 facing the fixed base 13, and the other end of the guide rod 142 slides through the fixed base 13 along a direction perpendicular to the surface of the isolation fence 61 to guide the movement of the adjusting base 11. The anti-detachment block 143 is fixed to the end of the guide rod 142 away from the adjusting base 11, and the cross-sectional dimension of the anti-detachment block 143 is larger than that of the guide rod 142. Spring 141 is sleeved on the outer wall of guide rod 142, and the opposite ends of spring 141 abut against the opposite side of adjusting seat 11 and fixed seat 13. The elastic force of spring 141 gives adjusting seat 11 a tendency to move away from fixed seat 13. When anti-disengagement block 143 abuts against the side of fixed seat 13 away from adjusting seat 11, spring 141 is still in a compressed state.

[0053] Reference Figure 2 and Figure 4 The abutment rod 16 is fixed to the inner wall of the pool body 1 and extends along the length of the pool body 1, and the abutment rod 16 is always located on the upper side of the rotating shaft 2.

[0054] Reference Figure 4 and Figure 8 The end of the abutment rod 16 away from the inner wall of the pool body 1 never contacts the fixed seat 13, the spring 141, or the anti-detachment block 143. The adjusting seat 11 has a clearance groove 17 on the side facing away from the isolation fence 61. When the rotating shaft 2 is in the rotating position 19 and the isolation fence 61 rotates around the rotating shaft 2, the adjusting seat 11 makes way for the abutment rod 16 through the clearance groove 17, so that the abutment rod 16 does not interfere with the adjusting seat 11.

[0055] When the isolation fence 61 rotates to extend its own extension plate vertically, the abutment rod 16 is opposite to the guide slope surface 12 of the adjustment seat 11 in the upper limit member 6. As the isolation fence 61 gradually moves upward, the abutment rod 16 abuts against the guide slope surface 12, causing the adjustment seat 11 to gradually move closer to the fixed seat 13. Meanwhile, as the isolation fence 61 gradually moves downward, the spring 141 will cause the adjustment seat 11 to gradually move away from the fixed seat 13.

[0056] Reference Figure 6 and Figure 8 The linkage 15 is disposed between the adjusting seat 11 and the limiting barrier 63, so as to drive the limiting barrier 63 to rotate as the adjusting seat 11 moves toward or away from the fixed seat 13. Specifically, the linkage 15 includes a gear 151 and a rack 152. Each linkage assembly has two gears 151, and the two gears 151 are coaxially fixed to the ends of the hinge shafts of the two limiting barriers 63. The two gears 151 have the same number of teeth and mesh with each other, and the two gears 151 have different heights in the vertical direction.

[0057] The rack 152 is fixed to the top of the adjusting seat 11. The teeth of the rack 152 are distributed along the length direction perpendicular to the fixed seat 13, and the rack 152 meshes with the lower gear 151 of the two gears 151. When the rotating shaft 2 is in the rotating position 19, the abutment rod 16 is opposite to the relief groove 17 of the adjusting seat 11, and the extension plate of the limiting fence 63 is in a horizontal state.

[0058] Reference Figure 4 and Figure 8 When the rotating shaft 2 moves upward to the material loading position 20, the abutment rod 16 pushes the adjusting seat 11 towards the fixed seat 13, causing the rack 152 to move together with the adjusting seat 11, so as to drive the gear 151 meshing with the rack 152 to rotate, and the two meshing gears 151 rotate in opposite directions, thereby causing the two limiting fences 63 to rotate upward and towards each other until the extension plates of the two limiting fences 63 extend vertically.

[0059] Furthermore, the inner walls of the pool body 1 at both ends are inclined from top to bottom along the same direction and angle, preventing the inclined inner walls of the pool body 1 from contacting each other during the vertical movement of the isolation fence 61, the receiving fence 62, and the limiting fence 63. During the rotation of the module cluster around the rotation axis 2 within the pool body 1, the inclined auxiliary module cluster on the inner end wall of the pool body 1 moves along the length of the pool body 1 to increase the degree of disturbance of the module cluster within the pool body 1.

[0060] The implementation principle of the coating tank in this embodiment is as follows: First, the rotating shaft 2 is moved to the upper and lower material positions 20, so that the limiting fence 63 in the upper limiting member 6 extends vertically onto the plate surface, allowing the mold cluster on the receiving fence 62 in the upper limiting member 6 to be removed and a new mold cluster to be placed on it. Then, the rotating shaft 2 is moved to the rotating position 19, so that the mold cluster is confined between the limiting fence 63 and the receiving fence 62. Then, the rotating shaft 2 is rotated to change the positions of the upper and lower limiting members 6, so that the newly placed mold cluster is immersed in the coating slurry for coating.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A casting process for an electric motor housing, characterized in that, Includes the following steps: Step 1: White mold making. Foam beads are pre-expanded, molded, and glued together to form a shape that matches the motor housing. Step 2: Mold cluster assembly, which involves bonding multiple molded patterns together with the sprue to form a mold cluster; Step 3: Apply coating. Place the mold cluster into the coating tank, immerse the mold cluster below the surface of the coating tank, and agitate the mold cluster to apply the refractory coating. After coating, dry the mold cluster. Step 4: Embedding and compacting the sand box. Embed the mold cluster into the sand box and make the gating gate on the gating system protrude from the surface of the molding sand. Then compact the sand box. Step 5: Pouring and displacement. Under negative pressure in the sand box, molten metal is poured into the gating from the gate on the gating system. The molten metal vaporizes the foam and gradually fills the space occupied by the foam. Step Six: Remove the casting. After the molten metal cools and solidifies, remove the casting from the sand box. The paint tank includes a tank body (1), a rotating shaft (2), a connecting seat (3), a power component (4), a driving component (5), and a limiting component (6). The tank body (1) has an upward-facing loading cavity (7). The connecting seat (3) is rotatably mounted on the rotating shaft (2). The limiting component (6) has two sets and is respectively installed on opposite sides of the rotating shaft (2). The limiting component (6) has a storage cavity (8) for placing the mold clusters. The storage cavity (8) is connected to the external environment. The pool body (1) has a rotating position (19) and an upper and lower material position (20). The power component (4) is installed in the pool body (1) and connected to the connecting seat (3) to drive the connecting seat (3) and the rotating shaft (2) to move up and down in the pool body (1), so that the rotating shaft (2) moves to the rotating position (19) or the upper and lower material position (20). When the rotating shaft (2) moves to the rotating position (19), the placement cavity (8) is immersed in the slurry of the pool body (1), and the rotating shaft (2) cooperates with the driving member (5). The driving member (5) can drive the rotating shaft (2) and the limiting member (6) to rotate in the pool body (1). When the rotating shaft (2) moves to the upper and lower material positions (20), the two sets of limiting members (6) are distributed vertically, and the placement cavity (8) of one set of limiting members (6) moves upward away from the pool body (1).

2. The motor housing casting process according to claim 1, characterized in that: The driving component (5) includes a rotation source (51) and a snap-fit ​​strip (52). The rotation source (51) is installed on the pool body (1) and cooperates with the snap-fit ​​strip (52) to drive the snap-fit ​​strip (52) to rotate. The snap-fit ​​strip (52) abuts against the inner wall of the pool body (1). The inner wall of the pool body (1) is also provided with a guide strip (9) that extends vertically and is opposite to the snap-fit ​​strip (52). The end of the rotating shaft (2) has a snap-fit ​​groove (10). When the snap-fit ​​strip (52) rotates to the point where its length extends vertically, the rotating shaft (2) slides up and down on the guide strip (9) and the snap-fit ​​strip (52) through the snap-fit ​​groove (10). When the rotating shaft (2) is opposite to the rotating position (19), the rotating shaft (2) is fully engaged with the snap-fit ​​strip (52).

3. The motor housing casting process according to claim 2, characterized in that: Each set of limiting components (6) includes an isolation fence (61), a receiving fence (62), and a limiting fence (63). The isolation fence (61) is connected to the rotating shaft (2). Each set of limiting components (6) has two receiving fences (62) and two limiting fences (63). The two receiving fences (62) are respectively installed on opposite sides of the isolation fence (61), and the two limiting fences (63) are respectively installed on opposite sides of the isolation fence (61). The limiting fences (63) correspond one-to-one with the receiving fences (62), and the limiting fences (63) are further away from the rotating shaft (2) than the receiving fences (62). When the extension plate of the limiting fence (63) is parallel to the extension plate of the receiving fence (62) and both are perpendicular to the extension plate of the isolation fence (61), the storage cavity (8) is formed in the space enclosed by the isolation fence (61), the receiving fence (62) and the limiting fence (63), and when the rotating shaft (2) is opposite to the upper and lower material positions (20), the extension plate of the isolation fence (61) is vertically arranged.

4. The motor housing casting process according to claim 3, characterized in that: The limiting fence (63) is hinged to the isolation fence (61), and there is a linkage component between the limiting fence (63) and the pool body (1). When the rotating shaft (2) moves to the rotating position (19), the limiting fence (63) is rotated to be perpendicular to the isolation fence (61) by the linkage component. When the rotating shaft (2) moves to the upper and lower material positions (20), the limiting fence (63) is rotated to be parallel to the isolation fence (61) by the linkage component.

5. The motor housing casting process according to claim 4, characterized in that: The linkage component includes The adjusting seat (11) moves on the end face of the isolation fence (61) facing the inner end wall of the pool body (1). The moving direction of the adjusting seat (11) is perpendicular to the extension plate surface of the isolation fence (61). The adjusting seat (11) has a guide slope (12) on one side. A fixed seat (13) is provided on the end wall of the isolation fence (61) and is opposite to the adjusting seat (11); A reset member (14) is disposed between the adjusting seat (11) and the fixed seat (13) to give the adjusting seat (11) a tendency to move away from the fixed seat (13); A linkage component (15) is disposed between the adjusting seat (11) and the limiting fence (63) for rotating the limiting fence (63) in conjunction with the movement of the adjusting seat (11); as well as Abutting rod (16) is connected to the inner wall of the pool body (1); When the rotating shaft (2) moves upward from the rotating position (19) to the loading / unloading position (20), the abutting rod (16) abuts against the guide slope (12) to drive the adjusting seat (11) to move gradually closer to the reset member (14); and the adjusting seat (11) has a clearance groove (17), which is used to make way for the abutting rod (16) when the rotating shaft (2) rotates at the rotating position (19).

6. The motor housing casting process according to claim 5, characterized in that: The linkage (15) includes a gear (151) and a rack (152). The gear (151) corresponds one-to-one with the limiting fence (63) and is connected to the end of the corresponding limiting fence (63). The gears (151) on the two limiting fences (63) in the same group of limiting components (6) mesh with each other. The rack (152) is connected to the adjusting seat (11) and meshes with one of the gears (151).

7. The motor housing casting process according to claim 5, characterized in that: The reset component (14) includes a spring (141) and a guide rod (142). The guide rod (142) is connected to the adjusting seat (11) and slides along the extension plate perpendicular to the isolation fence (61) on the fixed seat (13). The spring (141) abuts between the adjusting seat (11) and the fixed seat (13) and is sleeved on the outer wall of the guide rod (142).

8. The motor housing casting process according to claim 7, characterized in that: The reset component (14) further includes a stop block (143) disposed at the end of the guide rod (142) away from the adjusting seat (11), the stop block (143) restricting the guide rod (142) from disengaging from the fixed seat (13) in the direction closer to the adjusting seat (11).

9. The motor housing casting process according to claim 1, characterized in that: The inner walls of the pool body (1) at both ends are inclined in the same direction from top to bottom.

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