Special injection mold for motor assembly

Abstract

The invention relates to the technical field of injection molds, and discloses a special injection mold for a motor assembly, the special injection mold comprises an upper seat and a lower seat, the lower seat is internally provided with a mounting seat, the mounting seat is internally provided with a mold body, the mounting seat is provided with a disturbance mechanism, and the disturbance mechanism comprises a gear; the reversing mechanism comprises a first flow guide block, a second flow guide block and a first flow guide plate, and a linkage assembly is arranged between the first flow guide block and the second flow guide block; the disturbance mechanism generates airflow through gear rotation, and the reversing mechanism changes the flowing direction of the airflow by adjusting the positions of the first flow guide block, the second flow guide block and the first flow guide plate. The gears which are meshed with each other rotate to drive air in the mold bodies on the two sides to flow and intersect at the gears for heat exchange, so that the temperatures of the mold bodies on the two sides are kept similar in the injection molding process, and flaws of finished products caused by difference of factors such as water content when waste plastics are used are avoided.

Description

Technical Field

[0001] This invention belongs to the field of injection mold technology, and more specifically, relates to an injection mold for motor components. Background Technology

[0002] Motor assemblies include key components such as stators, rotor insulators, terminals, housings, and interlocking frames. These components often require good electrical insulation, structural strength, high temperature resistance, and dimensional accuracy. Injection molding has become the core process for mass production of motor assemblies due to its advantages such as high production efficiency, good molding accuracy, and the ability to integrate complex structures. The injection molds used in conjunction with injection molding are key equipment for ensuring the molding quality of the assemblies and improving production efficiency.

[0003] Traditional motor component injection molding often uses virgin engineering plastics such as PEEK, PPS, and PE. While these virgin plastics can meet the performance requirements of motor components, the production process is energy-intensive, resource-intensive, and generates a large amount of plastic waste, thus burdening the environment. Against this backdrop, recycling and reusing waste plastics has become an important path to achieving green manufacturing and reducing production costs. Pre-treating waste plastics through sorting, cleaning, crushing, drying, and melt granulation before applying them to the injection molding production of motor components can not only effectively reduce plastic waste pollution but also lower raw material procurement costs. Virgin plastics have high purity, are simple to pre-treat, and have relatively relaxed requirements for mold temperature uniformity; while pre-treated waste plastics may still have issues such as moisture content and uneven composition.

[0004] Chinese patent CN220075417U discloses an injection mold for a motor assembly. The upper mold is equipped with a rotor forming cavity, a bracket forming groove, and a bracket forming area, while the lower mold is equipped with a rotor forming block, a bracket forming protrusion, and a bracket forming area. This allows for the simultaneous injection molding of a motor rotor and a sensor bracket, enabling the injection molding of two types of motor assemblies with a single mold. This eliminates the need for developing new molds, saving costs. In addition to enabling the injection molding of two types of motor assemblies, it can also simultaneously mold multiple products, resulting in high production efficiency. Through the rational arrangement of each forming cavity and forming area, the flow path of the injection molding material is optimized, ensuring the shape and dimensional accuracy of the motor assembly products. This effectively avoids defects such as cracks and bubbles during the injection molding process, ensuring consistent product quality.

[0005] However, this technical solution still has at least the following drawbacks: it cannot optimize the temperature of different molding areas, which may lead to differences in the final product quality due to temperature variations in different molding areas. Therefore, this invention is proposed. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a special injection mold for motor components. When the intermeshing gears rotate, they drive the air flow inside the mold bodies on both sides, where the air converges and exchanges heat. This keeps the mold bodies on both sides at a similar temperature during the injection process, avoiding defects in the finished product caused by differences in moisture content and other factors when using waste plastics. By setting a first guide block and a second guide block to block the air inlet and outlet channels, and opening the air inlet and outlet channels when the injection is completed, the external airflow can quickly enter the mold body through the air inlet channel, thereby carrying away the heat and dissipating it through the air outlet channel.

[0007] The technical solution adopted by this invention to solve its technical problem is:

[0008] A special injection mold for motor components includes an upper base and a lower base. A mounting seat is installed inside the lower base, and a mold body is installed inside the mounting seat. The mounting seat is provided with:

[0009] A disturbance mechanism, the disturbance mechanism including gears;

[0010] A reversing mechanism, comprising a first guide block, a second guide block, and a first guide plate, wherein a linkage component is provided between the first guide block and the second guide block;

[0011] The disturbance mechanism generates airflow through gear rotation, and the reversing mechanism changes the airflow direction by adjusting the positions of the first guide block, the second guide block, and the first guide plate.

[0012] In a preferred embodiment of the present invention, an airflow channel is provided inside the mold body, and a cavity is provided on the top of the mounting base. The disturbance mechanism and the reversing mechanism are both located in the cavity. An air outlet groove and an air inlet groove are also provided on the top of the mounting base. The air outlet groove and the air inlet groove are respectively aligned with the two ends of the airflow channel. The disturbance mechanism is located on one side of the air outlet groove and the air inlet groove so that when the gear rotates, it drives the air to enter the airflow channel from the air inlet groove and return to the disturbance mechanism through the air outlet groove.

[0013] In a preferred embodiment of the present invention, the mounting base and its connecting structure are provided in two sets, and the gears in the two sets of disturbance mechanisms mesh with each other. The disturbance mechanism also includes a rotating shaft fixedly installed at the bottom of the gear. The rotating shaft movably passes through the mounting base and the lower base and extends to the outside. The rotating shaft is driven by a motor. The motors of the two sets of disturbance mechanisms have the same rotation speed but opposite directions to adapt to the meshing gears in the two sets of disturbance mechanisms.

[0014] In a preferred embodiment of the present invention, a first guide surface is provided on one side of the first guide block, the curvature of the first guide surface is adapted to the gear, and a through groove is provided on the other side of the first guide block. The first guide block is moved to different positions so that the first guide surface or the through groove is aligned with the air inlet groove. A connecting frame is also fixedly installed on the first guide block, and the connecting frame is movably inserted into the mounting base.

[0015] In a preferred embodiment of the present invention, the second guide block is movably inserted into the mounting base, and a support rod is fixedly installed at the bottom of the second guide block. The support rod movably passes through the mounting base and the lower base. The support rod is driven by a cylinder to move up and down. A second guide surface is provided on the second guide block, and guide patterns are provided on the second guide surface.

[0016] In a preferred embodiment of the present invention, the mounting base is provided with an air inlet and an air outlet. The air inlet is connected to the air inlet groove through a through groove on the first guide block, and the air outlet is connected to the disturbance mechanism. When the gear in the disturbance mechanism rotates, it drives the outside air to enter the airflow channel from the air inlet and exit through the air outlet.

[0017] In a preferred embodiment of the present invention, the linkage component includes a stop bar, which is fixedly connected to the connecting frame. A roller ring is movably mounted on one end of the stop bar. The linkage component also includes a guide groove formed on one side of the second guide block. The stop bar is movably connected in the guide groove. When the second guide block moves, the stop bar is driven to move through the guide groove, thereby driving the first guide block to move.

[0018] In a preferred embodiment of the present invention, the reversing mechanism further includes a fixing block fixedly installed on the mounting base. A baffle is fixedly installed on one side of the fixing block. The first guide plate is fixedly installed on one side of the baffle. The two sets of reversing mechanisms are symmetrically arranged. The first guide plate is arc-shaped. One end of the baffle is tangent to one end of the first guide plate.

[0019] In a preferred embodiment of the present invention, the reversing mechanism further includes a flow-diverting component. The flow-diverting component includes a second guide plate, which includes a first guide surface, a second guide surface, and a third guide surface. The first guide surface and the third guide surface are horizontally arranged and have a height difference between them. The second guide surface is inclined and its two ends are respectively connected to the first guide surface and the third guide surface. The flow-diverting components in the two sets of the reversing mechanism are arranged upside down so that the flow-diverting components guide the airflow on both sides to different directions.

[0020] In a preferred embodiment of the present invention, the flow diversion assembly further includes a third guide plate, which is arc-shaped and fixedly installed on the side of the third guide surface near the first guide surface. The airflow flows to the third guide surface under the guidance of the first guide surface and the second guide surface, and flows towards the gear under the guidance of the third guide plate.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention uses meshing gears to drive the airflow inside the mold bodies on both sides when they rotate, and the air converges and exchanges heat at the gears, so that the mold bodies on both sides maintain a similar temperature during the injection molding process, avoiding defects in the finished product caused by differences in moisture content and other factors when using waste plastics.

[0023] This invention blocks the air inlet and outlet channels by setting a first guide block and a second guide block, and opens the air inlet and outlet channels when the injection molding is completed, so that the external airflow can quickly enter the mold body through the air inlet channel, thereby carrying away the heat and dissipating it through the air outlet channel. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a special injection mold for motor components according to the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of a special injection mold for motor components according to the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the mold body of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the air inlet and air outlet slots of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure at the guide groove of the present invention;

[0029] Figure 6 This is a schematic diagram of the gear structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure at the through groove of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure at the second guide plate of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of the guide texture of the present invention;

[0033] Figure 10 This is a schematic diagram of the side structure of the mounting base of the present invention.

[0034] Figure label:

[0035] 100. Upper seat; 101. Lower seat; 102. Mounting seat; 103. Mold body; 104. Airflow channel;

[0036] 200. Gear; 201. Shaft; 202. Air outlet; 203. Air inlet;

[0037] 300. First guide block; 301. Through groove; 302. First guide surface; 303. Connecting frame; 304. Air inlet; 305. Baffle bar; 306. Roller ring; 307. Second guide block; 308. Guide groove; 309. Second guide surface; 310. Guide pattern; 311. Support rod; 312. Air outlet;

[0038] 400. Fixing block; 401. Baffle; 402. First guide plate; 403. Second guide plate; 404. First guide surface; 405. Second guide surface; 406. Third guide surface; 407. Third guide plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0040] Example 1:

[0041] like Figures 1 to 10 As shown, a special injection mold for motor components includes an upper base 100 and a lower base 101. A mounting base 102 is installed inside the lower base 101, and a mold body 103 is installed inside the mounting base 102. The mounting base 102 is provided with:

[0042] The disturbance mechanism includes gear 200;

[0043] The reversing mechanism includes a first guide block 300, a second guide block 307, and a first guide plate 402. A linkage component is provided between the first guide block 300 and the second guide block 307.

[0044] The disturbance mechanism generates airflow by rotating the gear 200, and the reversing mechanism changes the flow direction of the airflow by adjusting the positions of the first guide block 300, the second guide block 307 and the first guide plate 402.

[0045] like Figure 3 , Figure 6As shown, in a specific embodiment, an airflow channel 104 is provided inside the mold body 103, and a cavity is provided on the top of the mounting base 102. Both the disturbance mechanism and the reversing mechanism are located within the cavity. An air outlet groove 202 and an air inlet groove 203 are also provided on the top of the mounting base 102, respectively aligned with both ends of the airflow channel 104. The disturbance mechanism is located on one side of the air outlet groove 202 and the air inlet groove 203, so that when the gear 200 rotates, it drives air from the air inlet groove 203 into the airflow channel 104, and returns to the disturbance mechanism through the air outlet groove 202. In this configuration, when air flows within the airflow channel 104, it carries away internal heat. When passing the gear 200, heat exchange occurs between the air inside the mold bodies 103 on both sides, thereby maintaining similar temperatures on both sides of the mold bodies 103 and preventing temperature differences from causing variations in the injection-molded products.

[0046] like Figure 3 , Figure 6 , Figure 10 As shown, the mounting base 102 and its connecting structure are further provided with two sets of gears 200, and the gears 200 in the two sets of disturbance mechanisms mesh with each other. The disturbance mechanism also includes a rotating shaft 201 fixedly installed at the bottom of the gear 200. The rotating shaft 201 movably passes through the mounting base 102 and the lower base 101 and extends to the outside. The rotating shaft 201 is driven by a motor. The motors of the two sets of disturbance mechanisms have the same speed but opposite directions to match the meshing gears 200 in the two sets of disturbance mechanisms. In this configuration, when the motor drives the gears 200 to rotate, the two gears 200 rotate in opposite directions and drive airflow through the gap between the teeth. The outer contours of the two gears 200 are kept apart to prevent them from contacting each other and generating excessive heat through friction when the two gears 200 rotate.

[0047] like Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, further, a first guide surface 302 is provided on one side of the first guide block 300, the curvature of which is adapted to the gear 200. A through groove 301 is provided on the other side of the first guide block 300. The first guide block 300 can be moved to different positions to align the first guide surface 302 or the through groove 301 with the air inlet groove 203. A connecting bracket 303 is also fixedly installed on the first guide block 300, and the connecting bracket 303 is movably inserted into the mounting base 102. In this configuration, when the first guide block 300 moves to a position that isolates the air inlet groove 203 from the cavity, the first guide surface 302 is in contact with the gear 200. When the first guide block 300 moves to a position that opens the air inlet groove 203, the first guide surface 302 and the gear 200 maintain a certain distance. The connecting bracket 303 is used to support the first guide block 300.

[0048] like Figure 5 , Figure 9 , Figure 10 As shown, the second guide block 307 is movably inserted into the mounting base 102, and a support rod 311 is fixedly installed at the bottom of the second guide block 307. The support rod 311 movably passes through the mounting base 102 and the lower base 101. The support rod 311 is driven by a cylinder to move up and down. A second guide surface 309 is provided on the second guide block 307, and guide patterns 310 are provided on the second guide surface 309. In this configuration, the cylinder drives the second guide block 307 to move up and down through the support rod 311 to control the exposure of the guide patterns 310. The guide patterns 310 are used to mix the airflow delivered by the gear 200, so that the airflow temperature of different parts can be mixed evenly.

[0049] like Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the mounting base 102 is further provided with an air inlet 304 and an air outlet 312. The air inlet 304 is connected to the air inlet slot 203 through the through groove 301 on the first guide block 300, and the air outlet 312 is connected to the disturbance mechanism. When the gear 200 in the disturbance mechanism rotates, it drives the outside air to enter the airflow channel 104 through the air inlet 304 and is discharged through the air outlet 312. In this configuration, when the through groove 301 connects the air inlet slot 203 and the air inlet 304, the second guide block 307 is in a lowered position to connect the air outlet 312 with the cavity where the gear 200 is located. When the first guide block 300 blocks the air inlet 304, the second guide block 307 is in an raised position to block the air outlet 312.

[0050] like Figure 5 As shown, the linkage assembly further includes a stop rod 305, which is fixedly connected to the connecting frame 303. A roller ring 306 is movably mounted on one end of the stop rod 305. The linkage assembly also includes a guide groove 308 formed on one side of the second guide block 307. The stop rod 305 is movably connected within the guide groove 308. When the second guide block 307 moves, it drives the stop rod 305 to move through the guide groove 308, thereby moving the first guide block 300. In this configuration, the width of the guide groove 308 is slightly larger than the diameter of the roller ring 306, so that the roller ring 306 cannot simultaneously contact both sides of the guide groove 308. The movable connection between the roller ring 306 and the stop rod 305 eliminates the need for the stop rod 305 to directly contact the guide groove 308, avoiding frictional wear.

[0051] like Figure 6 , Figure 8As shown, the reversing mechanism further includes a fixing block 400 fixedly installed on the mounting base 102. A baffle 401 is fixedly installed on one side of the fixing block 400, and a first guide plate 402 is fixedly installed on one side of the baffle 401. The two sets of reversing mechanisms are symmetrically arranged. The first guide plate 402 is arc-shaped, and one end of the baffle 401 is tangent to one end of the first guide plate 402 to reduce the kinetic energy attenuation of the airflow. The reversing mechanism also includes a flow splitting component, which includes a second guide plate 403. The second guide plate 403 includes a first guide surface 404, a second guide surface 405, and a third guide surface 406. The first guide surface 404 and the third guide surface 406 are horizontally arranged with a height difference between them. The second guide surface 405 is inclined and its two ends are connected to the first guide surface 404 and the third guide surface 406, respectively. The flow splitting components in the two sets of reversing mechanisms are arranged upside down so that the flow splitting components guide the airflow on both sides to different directions. In this configuration, when the airflow passes through the first guide surface 404 and the second guide surface 405, it moves toward the third guide surface 406. Due to the inclined configuration of the second guide surface 405, the airflow is guided to one side when it passes through the third guide surface 406, thus offsetting it from the opposite airflow.

[0052] like Figure 6 , Figure 8 As shown, the flow diversion assembly further includes a third guide plate 407, which is arc-shaped and fixedly installed on the side of the third guide surface 406 near the first guide surface 404. The airflow flows to the third guide surface 406 under the guidance of the first guide surface 404 and the second guide surface 405, and then flows towards the gear 200 under the guidance of the third guide plate 407. In this configuration, one end of the third guide plate 407 points towards the center of the gear 200, so that the airflow flows directly to the gear 200 after being guided by the third guide plate 407.

[0053] The implementation principle of a special injection mold for motor components in this embodiment is as follows: During injection molding, the collected waste material can be pre-treated and sent into the mold. The support rod 311 is controlled by the cylinder to drive the second guide block 307 to rise. At this time, the second guide block 307 blocks the air outlet 312. During the rise of the second guide block 307, the guide groove 308 drives the baffle 305 to move. The baffle 305 drives the connecting frame 303 to move, so that the first guide block 300 moves and blocks the air inlet 304. At the same time, the air inlet groove 203 is connected to the gear 200. At this time, the motor is started and the gear 200 is driven to rotate through the rotating shaft 201. The two gears 200 mesh with each other during rotation and drive the air to flow. The air enters the airflow channel 104 through the air inlet groove 203 from the cavity where the gear 200 is located, and returns to the cavity where the gear 200 is located through the air outlet groove 202.

[0054] When the airflow exits from the outlet slot 202 and passes the second guide plate 403, it is deflected to one side under the guidance of the first guide surface 404, the second guide surface 405 and the third guide surface 406. Since the two flow splitting components are set in an upside-down form, the two flow splitting components guide the airflow to different sides to prevent the two airflows from colliding and causing kinetic energy loss. When the airflow enters the third guide surface 406, it flows to the gear 200 under the guidance of the third guide plate 407. At this time, the continuous rotation of the gear 200 delivers the airflow to the second guide block 307. When the airflow moves to the second guide block 307, the second guide surface 309 on the side of the second guide block 307 guides the airflow to the side. The guide grooves 310 on the second guide surface 309 mix the upper and lower parts of the airflow to make its temperature uniform.

[0055] When the injection molding is completed and cooling is required, the cylinder drives the support rod 311 to descend, causing the second guide block 307 to descend. The second guide block 307 drives the stop rod 305 to move through the guide groove 308, causing the connecting frame 303 and the first guide block 300 to move. At this time, the air outlet 312 is connected to the cavity where the gear 200 is located, and the air inlet 304 is connected to the air inlet groove 203 through the through groove 301. When the gear 200 rotates, it drives the external airflow to enter the air inlet groove 203 through the air inlet 304 and the through groove 301. After passing through the airflow channel 104, it carries away the heat and enters the cavity where the gear 200 is located through the air outlet groove 202, and is discharged through the air outlet 312, achieving rapid cooling.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A special injection mold for motor components, comprising an upper base (100) and a lower base (101), wherein a mounting base (102) is installed in the lower base (101), and a mold body (103) is installed in the mounting base (102), characterized in that, The mounting base (102) is provided with: A disturbance mechanism, the disturbance mechanism including a gear (200); A reversing mechanism, comprising a first guide block (300), a second guide block (307), and a first guide plate (402), wherein a linkage component is provided between the first guide block (300) and the second guide block (307); The disturbance mechanism generates airflow by rotating the gear (200), and the reversing mechanism changes the flow direction of the airflow by adjusting the positions of the first guide block (300), the second guide block (307) and the first guide plate (402).

2. The injection mold for motor components according to claim 1, characterized in that, The mold body (103) has an airflow channel (104) inside. The top of the mounting base (102) has a cavity. The disturbance mechanism and the reversing mechanism are both located in the cavity. The top of the mounting base (102) also has an air outlet groove (202) and an air inlet groove (203). The air outlet groove (202) and the air inlet groove (203) are respectively aligned with the two ends of the airflow channel (104). The disturbance mechanism is located on one side of the air outlet groove (202) and the air inlet groove (203) so that when the gear (200) rotates, it drives the air from the air inlet groove (203) into the airflow channel (104) and returns to the disturbance mechanism through the air outlet groove (202).

3. The special injection mold for motor components according to claim 2, characterized in that, The mounting base (102) and its connecting structure are provided with two sets, and the gears (200) in the two sets of disturbance mechanisms mesh with each other. The disturbance mechanism also includes a rotating shaft (201) fixedly installed at the bottom of the gear (200). The rotating shaft (201) moves through the mounting base (102) and the lower seat (101) and extends to the outside. The rotating shaft (201) is driven by a motor. The motors of the two sets of disturbance mechanisms have the same speed and opposite directions to adapt to the meshing gears (200) in the two sets of disturbance mechanisms.

4. The injection mold for motor components according to claim 3, characterized in that, The first guide block (300) has a first guide surface (302) on one side, the curvature of the first guide surface (302) is adapted to the gear (200), and a through groove (301) is provided on the other side of the first guide block (300). The first guide block (300) can be moved to different positions so that the first guide surface (302) or the through groove (301) is aligned with the air inlet groove (203). A connecting frame (303) is also fixedly installed on the first guide block (300), and the connecting frame (303) is movably inserted into the mounting base (102).

5. The injection mold for motor components according to claim 4, characterized in that, The second guide block (307) is movably inserted into the mounting base (102), and a support rod (311) is fixedly installed at the bottom of the second guide block (307). The support rod (311) movably passes through the mounting base (102) and the lower base (101). The support rod (311) is driven by a cylinder to move up and down. A second guide surface (309) is provided on the second guide block (307), and guide patterns (310) are provided on the second guide surface (309).

6. The injection mold for motor components according to claim 5, characterized in that, The mounting base (102) is provided with an air inlet (304) and an air outlet (312). The air inlet (304) is connected to the air inlet groove (203) through the through groove (301) on the first guide block (300). The air outlet (312) is connected to the disturbance mechanism. When the gear (200) in the disturbance mechanism rotates, it drives the outside air to enter the airflow channel (104) through the air inlet (304) and is discharged through the air outlet (312).

7. The injection mold for motor components according to claim 6, characterized in that, The linkage component includes a stop bar (305), which is fixedly connected to the connecting frame (303). A roller ring (306) is movably installed at one end of the stop bar (305). The linkage component also includes a guide groove (308) opened on one side of the second guide block (307). The stop bar (305) is movably connected in the guide groove (308). When the second guide block (307) moves, it drives the stop bar (305) to move through the guide groove (308) to drive the first guide block (300) to move.

8. The injection mold for motor components according to claim 7, characterized in that, The reversing mechanism also includes a fixed block (400) fixedly installed on the mounting base (102). A baffle (401) is fixedly installed on one side of the fixed block (400). The first guide plate (402) is fixedly installed on one side of the baffle (401). The two sets of reversing mechanisms are symmetrically arranged. The first guide plate (402) is arc-shaped. One end of the baffle (401) is tangent to one end of the first guide plate (402).

9. A special injection mold for motor components according to claim 8, characterized in that, The reversing mechanism further includes a diversion component, which includes a second guide plate (403). The second guide plate (403) includes a first guide surface (404), a second guide surface (405), and a third guide surface (406). The first guide surface (404) and the third guide surface (406) are horizontally arranged and have a height difference between them. The second guide surface (405) is inclined and its two ends are connected to the first guide surface (404) and the third guide surface (406) respectively. The diversion components in the two sets of the reversing mechanism are arranged upside down so that the diversion components guide the airflow on both sides to different directions.

10. A special injection mold for motor components according to claim 9, characterized in that, The flow diversion assembly also includes a third guide plate (407), which is arc-shaped and is fixedly installed on the side of the third guide surface (406) near the first guide surface (404). The airflow flows to the third guide surface (406) under the guidance of the first guide surface (404) and the second guide surface (405), and flows towards the gear (200) under the guidance of the third guide plate (407).

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