Lost foam casting method for motor casing containing cooling runner

Abstract

The invention discloses an evanescent mode casting method for a motor shell internally provided with a cooling runner, and belongs to the technical field of motor shell machining. The evanescent mode casting method specifically comprises the following steps that S1, the needed motor shell is divided into multiple sections along the axis, and forming of a multi-section motor shell white mold is achieved; s2, the spliced side of each section of the motor shell white mold is subjected to gluing treatment, and a glue material for gluing is selected as a hot melt adhesive; s3, sequentially splicing the glued sides of all the sections of the motor shell white mold to realize integral forming of the motor shell white mold; specifically, one side, facing the adjacent section of motor shell white mold, of one section of motor shell white mold is fixedly connected with an insertion block, one side, facing the insertion block, of the adjacent section of motor shell white mold is provided with an insertion groove matched with the insertion block in an insertion mode, and after the two adjacent sections of motor shell white molds are spliced, the insertion block is matched in the insertion groove in an insertion mode. And S4, after the formed motor shell white mold is infiltrated into the fireproof coating, the motor shell white mold is taken out and dried. The method has the effect that the forming quality of the motor shell after final casting is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of motor shell processing, in particular to a lost foam casting method of a motor shell containing a cooling flow channel. Background Art

[0002] The motor housing, also known as the motor protective cover, motor housing or motor frame, is a metal housing used to protect the motor, stator and other electrical parts inside the motor. Its main function is to prevent foreign matter from invading the motor and protect the internal parts from mechanical collision and damage. At the same time, the motor housing can also provide support and fixation for the motor to ensure normal and reliable operation of the motor.

[0003] In the prior art, in order to ensure the stability of the internal motor, a cooling channel is usually opened in the motor casing of a larger volume. When the motor casing is in use, water is circulated in the cooling channel for cooling, so that the internal motor can finally operate reliably and stably. The motor casing with a cooling channel is usually produced by lost foam, that is, a foam plastic white mold consistent with the shape of the molded part is first produced, and then the white mold is placed in a sand box and buried in the sand. After the dry sand is tightly attached to the white mold, molten metal is poured into the sand box through a pouring pipe. The white mold is vaporized by the high temperature of the metal solution, and is replaced by the metal solution. After cooling, a molded workpiece consistent with the shape of the white mold is obtained.

[0004] The shape of the motor housing with cooling channels is usually more complicated. Therefore, a foam plastic white mold consistent with the shape of the motor housing with cooling channels usually needs to be injection molded with multiple arc-shaped mold pieces through a mold. After the multiple arc-shaped mold pieces are injection molded, glue is applied to both sides of each arc-shaped mold piece and the arc-shaped mold pieces are bonded together to obtain a motor housing of the desired shape.

[0005] With regard to the above-mentioned prior art, when the arc-shaped mold pieces are glued and fixed, the relative positions of two adjacent arc-shaped mold pieces are easily offset, which is not convenient for ensuring the molding quality of the motor housing after final casting. Summary of the invention

[0006] In order to ensure the molding quality of the motor housing after final casting, the present application provides a lost foam casting method for a motor housing containing a cooling flow channel.

[0007] The present application provides a lost foam casting method for a motor housing containing a cooling channel, which adopts the following technical solution: A lost foam casting method for a motor housing containing a cooling flow channel comprises the following specific steps: S1, dividing the required motor housing into multiple sections along the axis, and forming the multiple sections of the motor housing white mold by means of a mold; S2, applying glue to one side of each section of the motor housing white mold where the white mold is spliced, wherein the glue material used for the application is hot melt glue; S3, sequentially splicing the glued sides of each section of the motor housing white mold to achieve the overall forming of the motor housing white mold; specifically, a plug-in block is fixedly connected to one side of a section of the motor housing white mold facing an adjacent section of the motor housing white mold, and a plug-in block is provided on one side of the adjacent section of the motor housing white mold facing the plug-in block. The plug-in block is plugged into the plug-in slot, and after the adjacent two sections of the motor shell white mold are spliced, the plug-in block is plugged into the plug-in slot; S4, the molded motor shell white mold is impregnated with refractory coating, then taken out and dried; S5, the dried molded motor shell white mold is placed in a sand box, and the molded motor shell white mold is buried with dry sand, a pouring pipe is placed, and the dry sand in the sand box is vibrated and compacted, and then the sand box is vacuumed; S6, molten metal is poured into the sand box through the pouring pipe; S7, after the sand box is cooled, the casting formed in the sand box is taken out, the pouring pipe is removed, and the molded motor shell is obtained after shot blasting.

[0008] By adopting the above technical scheme, the multi-section motor shell white mold divided along the axis of the motor shell makes the structure of the single-section motor shell white mold annular, and the single-section motor shell arranged in an annular manner is easy to be placed stably and the end portion is flat, thereby facilitating the gluing treatment on one side of the single-section motor shell splicing. At the same time, the cooperation between the plug-in block and the plug-in slot plays a limiting role in the position of the two adjacent sections of the motor shell white mold after splicing, so as to ensure the relative stability of the two adjacent sections of the motor shell white mold after splicing, so that the position of the two adjacent sections of the motor shell white mold is not easily offset after splicing, thereby facilitating ensuring the molding quality of the motor shell after the final casting. At the same time, the setting of the two adjacent sections of the motor shell white mold being bonded and fixed by hot melt adhesive makes it easier for the adhesive to be completely vaporized when the molten metal is poured, so that the two sections of the motor shell white mold after splicing can be better integrated, thereby finally obtaining a molded motor shell of better quality.

[0009] Optionally, in step S3, a connecting groove is provided in an annular manner on one side of a section of the motor casing white mold facing an adjacent section of the motor casing white mold, and the connecting groove extends to the inner wall of the section of the motor casing white mold where the section is located. A connecting portion that is plug-matched with the connecting groove and is in an annular manner is fixedly connected to the side of the adjacent section of the motor casing white mold facing the connecting groove. After the two adjacent sections of the motor casing white mold are spliced ​​together, the connecting portion is inserted into the connecting groove.

[0010] By adopting the above technical solution, the cooperation between the connecting portion and the connecting groove plays a further limiting role on the position of the two adjacent sections of the motor housing white mold after splicing, which is beneficial to further ensure the relative stability of the two adjacent sections of the motor housing white mold after splicing.

[0011] Optionally, in step S2, one side of a spliced ​​section of the motor housing white mold is glued by a gluing device. Specifically, the gluing device includes a supporting seat, a gluing motion mechanism and a gluing gun. The supporting seat is used to place one section of the motor housing white mold. The gluing motion mechanism includes a frame and a three-axis motion module. The three-axis motion module is installed on the frame and is used to drive the gluing gun to move along the x-axis, y-axis and z-axis directions. The gluing gun is used to glue one side of a spliced ​​section of the motor housing white mold. The gluing gun is connected to the glue box through a gluing hose.

[0012] By adopting the above technical solution, the setting of the three-axis motion module driving the glue gun to move in the x-axis, y-axis and z-axis directions is beneficial to ensuring the working efficiency of the glue gun when applying glue to one side of the bonding of one section of the motor housing white mold, thereby facilitating the rapid and stable implementation of gluing on one side of the bonding of one section of the motor housing white mold.

[0013] Optionally, the rubber-coated hose is coated with a sponge insulation layer.

[0014] By adopting the above technical solution, the sponge insulation layer plays a further role in heat preservation when the glue is sent from the glue box to the glue gun through the glue hose for gluing, which is beneficial to further ensure the gluing quality after the hot melt glue is applied.

[0015] Optionally, a plurality of circularly distributed positioning rods are provided on the top of the bearing seat, each of the positioning rods is sleeved with a positioning sleeve, and when the bearing seat places one section of the motor housing white mold, each of the positioning sleeves abuts against the inner wall of one section of the motor housing white mold.

[0016] By adopting the above technical solution, each positioning sleeve plays a role in limiting the position of one section of the motor housing white mold when it is placed on the bearing seat, which is beneficial to ensure the stability of the position of one section of the motor housing white mold when it is subjected to the gluing process.

[0017] Optionally, each section of the motor case white mold is provided with two supporting parts, and the two supporting parts are arranged in a plane on the side away from the section of the motor case white mold where the two supporting parts are located. Two pressing parts are arranged on the top of the supporting seat. When the supporting seat places one section of the motor case white mold, the two pressing parts respectively abut against the planes of the two supporting parts of one section of the motor case white mold.

[0018] By adopting the above technical solution, the pressing cooperation between the plane of the support part and the two pressing parts of the bearing seat plays a further circumferential limiting role when one section of the motor housing white mold is placed on the bearing seat, which is beneficial to further ensure the stability of the position of one section of the motor housing white mold during the glue coating process.

[0019] Optionally, in step S2, when one side of a section of the motor housing white mold is spliced ​​with glue, cold air or hot air is blown to the side of the section of the motor housing white mold through an air supply mechanism.

[0020] By adopting the above technical scheme, when one section of the motor casing white mold is being coated with glue, hot air is blown to one side of the spliced ​​section of the motor casing white mold through the air supply mechanism, so that the hot melt adhesive can maintain a suitable bonding temperature for a long time after coating, which is convenient for subsequent bonding with the other end of the motor casing white mold. At the same time, after the two sections of the motor casing white mold are bonded, cold air is blown to the splicing position of the two sections of the motor casing white mold through the air supply mechanism, so as to facilitate the rapid cooling of the hot melt adhesive, and then quickly achieve stable splicing of the two sections of the motor casing white mold.

[0021] Optionally, the air supply mechanism includes a fixed ring, a lifting assembly, a blower and a rotating assembly. The lifting assembly is used to drive the fixed ring to move in a vertical direction. The blowers are provided in multiple numbers and are evenly distributed around the axis of the fixed ring. The rotating assembly is used to drive each blower to rotate around its own axis. The blower is used to blow cold air or hot air to one side of a section of the motor housing white mold coated with glue.

[0022] By adopting the above technical scheme, the hair dryers evenly distributed around the axis of the fixing ring facilitate uniform blowing of the hot melt adhesive after it is applied, thereby further enhancing the gluing quality after the two sections of the motor housing white mold are bonded and fixed by ensuring the consistency of the state of the hot melt adhesive after the hot melt adhesive is evenly applied.

[0023] Optionally, the lifting assembly includes a lifting motor, a lifting screw and a lifting guide rod, the lifting screw is vertically rotatably installed on the frame, the lifting screw is passed through a fixing ring and cooperates with a thread of the fixing ring, the lifting motor is used to drive the lifting screw to rotate, the lifting guide rod is vertically fixedly installed on the frame, the lifting guide rod is passed through the fixing ring along the vertical direction and cooperates with the fixing ring for sliding.

[0024] By adopting the above technical solution, when the lifting motor drives the lifting screw to rotate, the fixed ring moves in the vertical direction under the limiting action of the lifting guide rod, thereby facilitating the adjustment of the height position of the fixed ring and facilitating the hair dryer to blow air to one section of the motor housing white mold at different heights, and has strong applicability.

[0025] Optionally, the rotating assembly includes a rotating motor, a driving wheel, a rotating ring gear and a rotating rod, the rotating ring gear is rotatably mounted on a fixed ring, the driving wheel is coaxially rotatably mounted on the fixed ring and meshes with the rotating ring gear, the rotating motor is used to drive the driving wheel to rotate, the rotating rod is fixedly mounted on the top of the rotating ring gear and has multiple rotating rods evenly distributed circumferentially around the axis of the rotating ring gear; the hair dryer includes a blowing fixed part, a blowing rotating part and a blowing head, the blowing fixed part is fixedly mounted on the fixing ring, the blowing rotating part is coaxially rotatably mounted on the blowing fixed part, the blowing head is installed on the outer circumferential surface of the blowing rotating part, the inner circumferential surface of the blowing rotating part is provided with a plurality of arc-shaped driving grooves evenly distributed circumferentially around its own axis, the rotating rod is slidably matched with the arc-shaped driving groove, and when the rotating rod slides in the arc-shaped driving groove, the blowing rotating part rotates around its own axis.

[0026] By adopting the above technical solution, when the rotating motor drives the driving wheel to rotate, the rotating ring gear drives the rotating rods to rotate together. When each rotating rod rotates, it realizes sliding in the arc-shaped driving groove, and then drives each blowing rotating part to rotate around its own axis, and finally realizes the adjustment of the rotation angle of the blowing head, which is convenient for the blowing head to achieve blowing treatment of one section of the motor shell white mold at different angles, which is conducive to further enhancing applicability.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The cooperation between the plug-in block and the plug-in slot plays a role in limiting the position of the two adjacent sections of the motor housing white mold after splicing, so as to ensure the relative stability of the two adjacent sections of the motor housing white mold after splicing, so that the position of the two adjacent sections of the motor housing white mold is not easily offset after splicing, thereby ensuring the molding quality of the motor housing after final casting.

[0028] 2. The setting of bonding and fixing two adjacent sections of the motor housing white mold with hot melt adhesive makes it easier for the adhesive to be completely vaporized when the molten metal is poured, so that the two sections of the motor housing white mold after splicing can be better integrated, thereby finally obtaining a molded motor housing with better quality.

[0029] 3. Each positioning sleeve serves to limit the position of one section of the motor housing white mold when it is placed on the bearing seat, thereby facilitating the stability of the position of one section of the motor housing white mold when the white mold is subjected to the gluing process.

[0030] 4. The hair dryers evenly distributed around the axis of the fixing ring facilitate uniform blowing of the hot melt adhesive after it is applied, thereby further enhancing the gluing quality after the two sections of the motor housing white mold are bonded and fixed by ensuring the consistency of the state of the hot melt adhesive after the hot melt adhesive is evenly applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the motor housing white mold in the embodiment of the present application.

[0032] Figure 2 It is an exploded schematic diagram of the overall structure of the motor housing white mold in the embodiment of the present application.

[0033] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0034] Figure 4 It is an exploded schematic diagram of the overall structure of the white mold of the motor housing in the embodiment of the present application from another perspective.

[0035] Figure 5 It is a schematic diagram of the overall structure of the glue coating device in the embodiment of the present application.

[0036] Figure 6 yes Figure 5 A partial enlarged schematic diagram of part B.

[0037] Figure 7 It is a schematic diagram of the connection relationship between the supporting seat and the first white mold in the embodiment of the present application.

[0038] Description of reference numerals: 1. First white mold; 2. Second white mold; 3. Third white mold; 4. Cooling channel hole; 5. Top end cover; 6. Bottom end cover; 7. Channel connecting hole; 8. Water inlet hole; 9. Water outlet hole; 10. Support part; 11. Plug-in block; 12. Plug-in slot; 13. Connection slot; 14. Connection part; 15. Bearing seat; 16. Rack; 17. X-axis linear module; 18. Y-axis linear module; 19. Z-axis linear module ; 20. Mounting plate; 21. Glue gun; 22. Glue hose; 221. Sponge insulation layer; 23. Positioning rod; 24. Positioning sleeve; 25. Pressing part; 26. Fixed ring; 27. Lifting motor; 28. Lifting screw; 29. ​​Lifting guide rod; 30. Rotating motor; 31. Driving wheel; 32. Rotating gear ring; 33. Rotating rod; 34. Blowing fixed part; 35. Blowing rotating part; 36. Blowing head. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] The present application discloses a method for lost foam casting of a motor housing containing a cooling channel. Figure 1 The lost foam casting method of a motor housing containing a cooling channel includes the following specific steps: S1, dividing the required motor housing into multiple sections along the axis, and forming the multiple-section motor housing white mold through a mold.

[0041] S2, gluing is performed on one side of each section of the motor housing white mold, and the glue material used for gluing is hot melt glue.

[0042] S3, sequentially splicing one side of each section of the motor housing white mold after gluing, to achieve overall forming of the motor housing white mold.

[0043] S4, the white mold of the formed motor housing is impregnated with the refractory coating, then taken out and dried.

[0044] S5, putting the dried white mold of the motor housing into a sand box, and burying the white mold of the motor housing with dry sand, placing a pouring pipe, vibrating and compacting the dry sand in the sand box, and then vacuuming the sand box.

[0045] S6, pouring molten metal into the sand box through the pouring pipe.

[0046] S7, after the sand box is cooled, the casting formed in the sand box is taken out, the pouring pipe is removed and shot blasting is performed to obtain a molded motor housing.

[0047] Specifically, refer to Figure 1 and Figure 2 In step S1, the number of divisions of the required motor shell is not specifically limited. In the embodiment of the present application, three sections are selected. The white molds of each section of the motor shell are respectively set as the first white mold 1, the second white mold 2 and the third white mold 3. One side of the axial direction of the three sections of the motor shell white mold is provided with cooling flow channel holes 4 that are arranged along the axial direction of the three sections of the motor shell white mold. There are multiple cooling flow channel holes 4 evenly distributed around the circumference of the axis of each section of the motor shell white mold. After the first white mold 1, the second white mold 2 and the third white mold 3 are spliced, the cooling flow channel holes 4 distributed along the axis of the first white mold 1 are connected.

[0048] Reference Figure 2 and Figure 3 The top and bottom of the spliced ​​first white mold 1, the second white mold 2 and the third white mold 3 are respectively fixed by bonding with a top end cover 5 and a bottom end cover 6. The top end cover 5 and the bottom end cover 6 are both provided with a flow channel connecting hole 7 on the side close to each other. There are multiple flow channel connecting holes 7 distributed circumferentially around the axis of the surface where they are located. Two adjacent cooling flow channel holes 4 adjacent to each other in the circumferential direction are connected with the same flow channel connecting hole 7. The side wall of one section of the motor housing white mold is provided with a water inlet hole 8 and a water outlet hole 9 connected with its own cooling flow channel hole 4. The water inlet hole 8 and the water outlet hole 9 are distributed circumferentially around the surface where they are located. After water is passed through the first white mold 1, the second white mold 2, the third white mold 3, the top end cover 5 and the bottom end cover 6, the water flow passed in circulates in each flow channel connecting hole 7 along the axis direction of the motor housing white mold and the circumferential direction of the motor housing white mold, and finally facilitates the molding casting, that is, the molding motor housing, to realize the circulation cooling of the internal components.

[0049] More specifically, refer to Figure 1 and Figure 3Each section of the motor housing white mold is integrally fixed with two support parts 10, and the two support parts 10 are arranged in a plane on the side away from the section of the motor housing white mold where they are located, so that when each section of the motor housing white mold is placed horizontally on the ground, the two support parts 10 are in contact with the ground to achieve stable support for each section of the motor housing white mold.

[0050] Reference Figure 3 and Figure 4 , a support portion 10 of one section of the motor housing white mold is fixedly connected with a plug-in block 11 on one side of the support portion 10 of an adjacent section of the motor housing white mold, that is, equivalent to the embodiment of the present application, the top of the support portion 10 of the first white mold 1 and the top of the support portion 10 of the second white mold 2 are both fixedly connected with the plug-in block 11; an adjacent section of the motor housing white mold is provided with a plug-in groove 12 that is plug-matched with the plug-in block 11 on the side facing the plug-in block 11, that is, equivalent to the embodiment of the present application, the bottom of the support portion 10 of the second white mold 2 and the bottom of the support portion 10 of the third white mold 3 are provided with a plug-in groove 12 that is plug-matched with the plug-in block 11; after the two adjacent sections of the motor housing white mold are spliced, the plug-in blocks 11 of the first white mold 1 and the second white mold 2 are respectively plug-matched in the plug-in grooves 12 of the second white mold 2 and the third white mold 3. In the embodiment of the present application, the shapes of the plug-in block 11 of the first white mold 1 and the plug-in slot 12 of the second white mold 2 are set to be rectangular, and the shapes of the plug-in block 11 of the second white mold 2 and the plug-in slot 12 of the third white mold 3 are set to be circular, so as to facilitate the rapid and correct assembly of the first white mold 1, the second white mold 2 and the third white mold 3.

[0051] Reference Figure 2 and Figure 4 To further facilitate the assembly of two adjacent sections of the motor shell white mold in step S3, a connecting groove 13 is provided in an annular manner on one side of one section of the motor shell white mold facing the adjacent section of the motor shell white mold, that is, the tops of the first white mold 1 and the second white mold 2 are both provided with an annular connecting groove 13, and the connecting groove 13 extends to the inner wall of the section of the motor shell white mold where the section is located; a connecting portion 14 that is plugged into and matched with the connecting groove 13 and is arranged in an annular manner is fixedly connected to the side of the adjacent section of the motor shell white mold facing the connecting groove 13, that is, the bottoms of the second white mold 2 and the third white mold 3 are both fixedly connected with the connecting portion 14 that is plugged into and matched with the connecting groove 13 and is arranged in an annular manner; after the two adjacent sections of the motor shell white mold are spliced, the connecting portion 14 is inserted into the connecting groove 13, thereby further limiting the position of the two adjacent sections of the motor shell white mold after splicing, which is conducive to further ensuring the relative stability of the two adjacent sections of the motor shell white mold after splicing.

[0052] Specifically, refer to Figure 5 and Figure 6In step S2, one side of the motor housing white mold splicing is glued by a glue coating device, wherein the glue coating device specifically includes a bearing seat 15, a glue coating motion mechanism and a glue coating gun, the glue coating motion mechanism includes a frame 16 and a three-axis motion module, the three-axis motion module includes an x-axis linear module 17, a y-axis linear module 18 and a z-axis linear module 19, the y-axis linear module 18 is installed on the slider of the x-axis linear module 17, and the z-axis linear module 19 is installed on the slider of the y-axis linear module 18, so that the x-axis linear module 17 is horizontally arranged on the frame 16 and drives the y-axis linear module 18 to move horizontally along the x-axis direction, and the y-axis linear module 18 drives the z-axis linear module 19 to move horizontally along the y-axis direction.

[0053] Reference Figure 5 The slider of the z-axis linear module 19 is fixedly connected to the mounting plate 20, and the glue gun 21 is installed on the mounting plate 20 and connected to the glue box through the glue hose 22 (the glue box is not shown in the figure), so that the three-axis motion module finally drives the glue gun 21 to move along the x-axis, y-axis and z-axis directions, so that the glue gun 21 can realize the glue application on one side of the splicing of the motor housing white mold. The glue hose 22 is wrapped with a sponge insulation layer 221 by tape wrapping, so as to further insulate the glue when the glue is fed from the glue box to the glue gun 21 through the glue hose 22 for gluing, thereby further ensuring the gluing quality after the hot melt glue is applied.

[0054] Reference Figure 5 and Figure 7 The bearing seat 15 is fixedly mounted on the frame 16 and is located at the bottom of the glue gun 21. A plurality of circularly distributed positioning rods 23 are arranged on the top of the bearing seat 15. Each positioning rod 23 is sleeved with a positioning sleeve 24. The material of the positioning sleeve 24 is selected to be rubber. Two pressing parts 25 are also arranged on the top of the bearing seat 15. The bearing seat 15 is used to place one section of the motor shell white mold. When the bearing seat 15 places one section of the motor shell white mold, each positioning sleeve 24 abuts against the inner wall of one section of the motor shell white mold, and the two pressing parts 25 abut against the planes of the two supporting parts 10 of one section of the motor shell white mold, so as to achieve stable positioning of the position of one section of the motor shell white mold, thereby facilitating the subsequent stable gluing process of one section of the motor shell white mold.

[0055] Further, refer to Figure 5 and Figure 6In step S2, when one side of the motor housing white mold splicing is subjected to glue coating, cold air or hot air is blown to one side of the motor housing white mold splicing through the air supply mechanism. The air supply mechanism includes a fixed ring 26, a lifting assembly, a blower and a rotating assembly. The lifting assembly includes a lifting motor 27, a lifting screw 28 and a lifting guide rod 29. The lifting screw 28 is vertically rotatably mounted on the frame 16 and fixedly connected to the output end of the lifting motor 27. The lifting motor 27 is mounted on the frame 16. The lifting screw 28 is inserted through the fixed ring 26 and threadedly matched with the fixed ring 26. The lifting guide rod 29 is vertically fixedly mounted on the frame 16. The lifting guide rod 29 is inserted through the fixed ring 26 in the vertical direction and slidably matched with the fixed ring 26. When the lifting motor 27 drives the lifting screw 28 to rotate, the fixed ring 26 moves in the vertical direction under the limiting action of the lifting guide rod 29, thereby adjusting the height position of the fixed ring 26.

[0056] Reference Figure 6 The rotating assembly includes a rotating motor 30, a driving wheel 31, a rotating ring gear 32 and a rotating rod 33. The rotating ring gear 32 is rotatably mounted on the fixed ring 26. The driving wheel 31 is coaxially rotatably mounted on the fixed ring 26 and meshes with the rotating ring gear 32. The rotating motor 30 is mounted on the fixed ring 26. The driving wheel 31 is fixedly mounted on the output end of the rotating motor 30. The rotating rod 33 is fixedly mounted on the top of the rotating ring gear 32 and is evenly distributed circumferentially around the axis of the rotating ring gear 32.

[0057] Reference Figure 5 and Figure 6 The hair dryer includes a blowing fixed portion 34, a blowing rotating portion 35 and a blowing head 36. The blowing fixed portion 34 is fixedly installed on the fixing ring 26, the blowing rotating portion 35 is coaxially rotatably installed on the blowing fixed portion 34, and the blowing head 36 is installed on the outer circumferential surface of the blowing rotating portion 35. The inner circumferential surface of the blowing rotating portion 35 is provided with a plurality of arc-shaped driving grooves uniformly distributed circumferentially around its own axis. The rotating rod 33 slides with the arc-shaped driving groove. When the rotating motor 30 drives the driving wheel 31 to rotate, the rotating gear ring 32 drives each rotating rod 33 to rotate around its own axis together, thereby making the rotating rod 33 slide in the arc-shaped driving groove. When the rotating rod 33 slides in the arc-shaped driving groove, the blowing rotating portion 35 rotates around its own axis, thereby finally realizing the adjustment of the rotation angle of the blowing head 36, so that the blowing head 36 can realize the blowing treatment of one section of the motor shell white mold at different angles, and has strong applicability. The adjustment of the height position of the fixing ring 26 makes it convenient for the hair dryer to blow air to one section of the motor casing white mold at different height positions. When the hair dryer blows hot air, the hot melt adhesive can maintain a suitable bonding temperature for a long time after being applied, which is convenient for subsequent bonding with the other end of the motor casing white mold; after the two sections of the motor casing white mold are bonded, the hair dryer blows cold air to the splicing position of the two sections of the motor casing white mold, thereby facilitating the rapid cooling of the hot melt adhesive, and then quickly realizing the stable splicing of the two sections of the motor casing white mold.

[0058] The implementation principle of a lost foam casting method for a motor shell containing a cooling flow channel in an embodiment of the present application is as follows: during the production and processing of the motor shell, the multi-section motor shell white mold divided along the axis of the motor shell makes the structure of the single-section motor shell white mold annular, and the annularly arranged single-section motor shell is easy to be placed stably and the end is flat, thereby facilitating the gluing treatment on one side of the single-section motor shell splicing. At the same time, the cooperation between the plug-in block 11 and the plug-in slot 12 plays a limiting role in the position of the two adjacent sections of the motor shell white mold after splicing, which is convenient for ensuring the relative stability of the two adjacent sections of the motor shell white mold after splicing, so that the position of the two adjacent sections of the motor shell white mold is not easily offset after splicing, thereby facilitating ensuring the molding quality of the motor shell after the final casting. At the same time, the setting of bonding and fixing the two adjacent sections of the motor shell white mold with hot melt adhesive makes it easier for the adhesive to be completely vaporized when the molten metal is poured, thereby making the two sections of the motor shell white mold after splicing better able to fuse, thereby finally obtaining a molded motor shell of better quality.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lost foam casting method for a motor housing containing a cooling channel, characterized in that: The method comprises the following specific steps: S1, dividing the required motor housing into multiple sections along the axis, and forming the multiple sections of the motor housing white mold by using a mold; S2, applying glue to one side of the spliced ​​white mold of each section of the motor housing, and the glue material used for the coating is hot melt glue; S3, sequentially splicing one side of each section of the motor housing white mold after gluing, to achieve overall forming of the motor housing white mold; Specifically, a plug-in block (11) is fixedly connected to one side of a motor housing white mold facing an adjacent motor housing white mold, and a plug-in slot (12) for plugging and matching with the plug-in block (11) is provided on the side of the adjacent motor housing white mold facing the plug-in block (11); after the two adjacent motor housing white molds are spliced, the plug-in block (11) is plug-fitted into the plug-in slot (12); S4, impregnating the formed motor housing white mold with the refractory coating, taking it out and drying it; S5, putting the dried white mold of the motor housing into a sand box, burying the white mold of the motor housing with dry sand, placing a pouring pipe, vibrating and compacting the dry sand in the sand box, and then vacuuming the sand box; S6, pouring molten metal into the sand box through a pouring pipe; S7, after the sand box is cooled, the casting formed in the sand box is taken out, the pouring pipe is removed and shot blasting is performed to obtain a molded motor housing.

2. The lost foam casting method of a motor housing containing a cooling channel according to claim 1, characterized in that: In step S3, a connecting groove (13) arranged in an annular manner is provided on one side of a motor housing white mold section facing an adjacent motor housing white mold section, the connecting groove (13) extending to the inner wall of the motor housing white mold section where the section is located, and a connecting portion (14) arranged in an annular manner and pluggable with the connecting groove (13) is fixedly connected to the side of the adjacent motor housing white mold section facing the connecting groove (13), and after the adjacent two motor housing white mold sections are spliced, the connecting portion (14) is inserted into the connecting groove (13).

3. The lost foam casting method of a motor housing containing a cooling channel according to claim 1, characterized in that: In step S2, a glue coating process is performed on one side of a spliced ​​section of a motor housing blank mold by means of a glue coating device. Specifically, the glue coating device comprises a bearing seat (15), a glue coating motion mechanism and a glue coating gun. The bearing seat (15) is used to place one side of a motor housing blank mold. The glue coating motion mechanism comprises a frame (16) and a three-axis motion module. The three-axis motion module is mounted on the frame (16) and is used to drive a glue coating gun (21) to move along the x-axis, y-axis and z-axis directions. The glue coating gun (21) is used to coat one side of a spliced ​​section of a motor housing blank mold. The glue coating gun (21) is connected to a glue material box via a glue coating hose (22).

4. The lost foam casting method of a motor housing containing a cooling channel according to claim 3, characterized in that: The rubber-coated hose (22) is coated with a sponge insulation layer (221).

5. The lost foam casting method of a motor housing containing a cooling channel according to claim 3, characterized in that: A plurality of circularly distributed positioning rods (23) are arranged on the top of the bearing seat (15), each positioning rod (23) is sleeved with a positioning sleeve (24), and when the bearing seat (15) is placed on one section of the motor housing white mold, each positioning sleeve (24) abuts against the inner wall of one section of the motor housing white mold.

6. The lost foam casting method of a motor housing containing a cooling channel according to claim 5, characterized in that: Each section of the motor housing white mold is provided with two supporting parts (10), and the two supporting parts (10) are arranged in a plane on the side away from the section of the motor housing white mold where the two supporting parts (10) are located. The top of the bearing seat (15) is provided with two pressing parts (25), and when the bearing seat (15) is placed on one section of the motor housing white mold, the two pressing parts (25) respectively contact the planes of the two supporting parts (10) of one section of the motor housing white mold.

7. The lost foam casting method of a motor housing containing a cooling channel according to claim 3, characterized in that: In step S2, when one side of a section of the motor housing white mold is being glued, cold air or hot air is blown toward the one side of the motor housing white mold through the air supply mechanism.

8. The lost foam casting method of a motor housing containing a cooling channel according to claim 7, characterized in that: The air supply mechanism comprises a fixed ring (26), a lifting assembly, a blower and a rotating assembly. The lifting assembly is used to drive the fixed ring (26) to move in a vertical direction. The blowers are provided in a plurality and are evenly distributed around the axis of the fixed ring (26). The rotating assembly is used to drive each blower to rotate around its own axis. The blower is used to blow cold air or hot air to one side of a section of the motor housing white mold glue coating.

9. The lost foam casting method of a motor housing containing a cooling channel according to claim 7, characterized in that: The lifting assembly comprises a lifting motor (27), a lifting screw (28) and a lifting guide rod (29); the lifting screw (28) is vertically rotatably mounted on the frame (16); the lifting screw (28) is passed through a fixing ring (26) and threadedly engaged with the fixing ring (26); the lifting motor (27) is used to drive the lifting screw (28) to rotate; the lifting guide rod (29) is vertically fixedly mounted on the frame (16); the lifting guide rod (29) is passed through the fixing ring (26) in a vertical direction and slidably engaged with the fixing ring (26).

10. The lost foam casting method of a motor housing with internal cooling channel according to claim 7, characterized in that: The rotating assembly comprises a rotating motor (30), a driving wheel (31), a rotating ring gear (32) and a rotating rod (33); the rotating ring gear (32) is rotatably mounted on a fixing ring (26); the driving wheel (31) is coaxially rotatably mounted on the fixing ring (26) and meshes with the rotating ring gear (32); the rotating motor (30) is used to drive the driving wheel (31) to rotate; a plurality of rotating rods (33) are fixedly mounted on the top of the rotating ring gear (32) and are evenly distributed in the circumferential direction around the axis of the rotating ring gear (32); the hair dryer comprises a blowing fixing portion (34), a blowing fixing portion (35), a blowing fixing portion (36), a blowing fixing portion (37), a blowing fixing portion (38), a blowing fixing portion (39), a blowing fixing portion (40), a blowing fixing portion (41), a blowing fixing portion (42), a blowing fixing portion (43), a blowing fixing portion (44), a blowing fixing portion (45), a blowing fixing portion (46), a blowing fixing portion (47), a blowing fixing portion (48), a blowing fixing portion (49), a blowing fixing portion (41), a blowing fixing portion (49), a blowing fixing portion (41), a blowing fixing portion (43), a blowing fixing portion (44), a blowing fixing portion (45), a blowing fixing portion (46), a blowing fixing portion (47), a blowing fixing portion (48), a blowing fixing portion (49), a blowing fixing portion (49), a blowing fixing portion (49), The present invention relates to a wind rotating part (35) and a blowing head (36), wherein the blowing fixed part (34) is fixedly mounted on the fixing ring (26), the blowing rotating part (35) is coaxially rotatably mounted on the blowing fixed part (34), the blowing head (36) is mounted on the outer peripheral surface of the blowing rotating part (35), the inner peripheral surface of the blowing rotating part (35) is provided with a plurality of arc-shaped driving grooves uniformly distributed circumferentially around its own axis, the rotating rod (33) is slidably matched with the arc-shaped driving groove, and when the rotating rod (33) slides in the arc-shaped driving groove, the blowing rotating part (35) rotates around its own axis.

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