Three-phase asynchronous motor and method for manufacturing same

Abstract

The application relates to a three-phase asynchronous motor and a manufacturing method thereof, and belongs to the technical field of motors. The motor comprises a motor body and a heat dissipation end arranged at the tail of the motor body and used for dissipating heat of the motor body. The heat dissipation end comprises a heat dissipation fan and a rear cover covering the heat dissipation fan. The motor body is circumferentially provided with heat dissipation fins. The motor further comprises a driving screw rotatably arranged at the bottom of the motor body and a cleaning mechanism slidably installed on the driving screw and abutting against the heat dissipation fins and used for cleaning the surface of the heat dissipation fins. The rear cover is provided with an air outlet for guiding hot air blown by the heat dissipation fan, and the air outlet is rotatably provided with a driving fan driven by the hot air. The driving fan is connected with the driving screw to drive the driving screw to rotate and drive the cleaning mechanism to move. Dust on the heat dissipation fins of the motor can be removed through the above structure, and the heat dissipation efficiency of the heat dissipation fins is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a three-phase asynchronous motor and a manufacturing method thereof. Background Art

[0002] A three-phase asynchronous motor is a type of electric motor that is powered by a 380V three-phase AC current. Its rotor and stator rotating magnetic fields rotate in the same direction but at different speeds, resulting in a slip.

[0003] A three-phase asynchronous motor typically consists of a motor body with a rotor and stator inside and a heat sink mounted at its rear end. The heat sink has a cooling fan. The motor body is circumferentially and longitudinally provided with heat sink fins to dissipate heat during operation. During motor operation, static electricity is generated on the surface of the heat sink. Static electricity attracts small, light objects, making the heat sink susceptible to attracting dust particles. When dust particles adhere to the heat sink, they hinder heat transfer, reducing the heat dissipation efficiency. Summary of the Invention

[0004] In order to remove dust on the surface of the heat sink and improve the heat dissipation efficiency of the heat sink, the present invention provides a three-phase asynchronous motor and a manufacturing method thereof.

[0005] In a first aspect, the present invention provides a three-phase asynchronous motor, which adopts the following technical solution:

[0006] A three-phase asynchronous motor comprises a motor body and a heat dissipation end arranged at the tail of the motor body and used for dissipating heat from the motor body, the heat dissipation end comprising a heat dissipation fan and a rear cover covering the heat dissipation fan, the motor body is circumferentially provided with heat dissipation fins, and further comprises a driving screw rotatably arranged at the bottom of the motor body and a cleaning mechanism slidably mounted on the driving screw and abutting against the heat dissipation fins for cleaning dust accumulated on the surface of the heat dissipation fins; the rear cover has an air outlet for the heat dissipation fan to guide hot air to be blown out, and the air outlet is rotatably provided with a driving fan driven by hot air; the driving fan is connected to the driving screw to drive the driving screw to rotate and then drive the cleaning mechanism to move.

[0007] By adopting the above technical solution, the hot air generated by the cooling fan is used as power to drive the driving fan, which in turn drives the cleaning mechanism to remove dust from the heat sink. Since the cooling fan can rotate whenever the motor is running, the cleaning mechanism can always remove dust without consuming additional electricity, which is more convenient. In addition, since the cleaning mechanism is driven by wind power, the cleaning frequency is not high, which is less likely to cause damage to the cleaning mechanism and extend the life of the cleaning mechanism.

[0008] Optionally, a reversing mechanism for changing the rotation direction of the driving screw is provided between the driving fan and the driving screw, the reversing mechanism comprising a reversing rod and a first gear wheel and a second gear wheel mounted on the reversing rod; the first gear wheel and the second gear wheel are both used to connect the driving fan and the driving screw and are switched for forward and reverse rotation;

[0009] The cleaning mechanism has a toggle block, the reversing rod is arranged parallel to the driving screw, and the reversing rod has a first abutment portion and a second abutment portion at both ends of the toggle block respectively; when the toggle block moves, it abuts against the first abutment portion and the second abutment portion respectively to drive the reversing rod to move and then switch between the first gear wheel and the second gear wheel.

[0010] By adopting the above technical solution and setting a reversing mechanism, the cleaning mechanism can clean back and forth on the heat sink without manual adjustment of the cleaning direction of the cleaning mechanism, which is more convenient.

[0011] Optionally, the cleaning mechanism includes a cleaning ring sleeved on the outside of the motor body and a driving block that slides vertically on the cleaning ring and is threadedly connected to the driving screw; the cleaning ring is provided with a brush; the toggle block is located at the bottom of the cleaning ring and the toggle block is provided with an installation groove along the length direction of the driving screw, and the driving block is located in the installation groove; the bottom of the toggle block abuts against the reversing rod, and the reversing rod is provided with arc protrusions at intervals along the length direction.

[0012] By adopting the above technical solution, when the cleaning mechanism moves, due to the presence of the arc protrusion, the cleaning mechanism can vibrate up and down while cleaning, so that the brush can better clean the heat sink.

[0013] Optionally, the cleaning ring is hollow inside and has dust suction holes circumferentially arranged toward the inner wall of the motor body; the cleaning ring is provided with a negative pressure tube running through it along the length direction of the driving screw, one end of the negative pressure tube is close to the air outlet and is trumpet-shaped, and the negative pressure tube is provided with air inlets spaced apart along the length direction; a dust box for collecting dust is provided on the cleaning ring.

[0014] By adopting this technical solution, when the brush sweeps dust off the heat sink, the negative pressure generated by the air outlet causes the dust suction holes to draw the dust into the cleaning ring and drop it into the dust collection box. Furthermore, when the cleaning mechanism vibrates up and down, the dust in the cleaning ring is evenly shaken off and dropped into the dust collection box, preventing it from accumulating in the cleaning ring.

[0015] Optionally, one end of the driving screw has a gear wheel mounting portion with a polygonal cross-section, and both the first gear wheel and the second gear wheel slide on the gear wheel mounting portion.

[0016] In a second aspect, the present application provides a method for manufacturing a three-phase asynchronous motor, which adopts the following technical solution:

[0017] A method for manufacturing a three-phase asynchronous motor, applied to a three-phase asynchronous motor, comprising:

[0018] Acquire surface image information of the motor housing and establish a three-dimensional model based on the surface image information;

[0019] Determine the shell convex surface features and shell concave surface features based on the three-dimensional model analysis;

[0020] Controlling a preset blowing device to blow air from top to bottom along the circumference of the housing convex surface features at a preset blowing power to remove dust;

[0021] Determine the concave feature position and concave feature angle according to the three-dimensional model and the concave feature of the shell;

[0022] The blowing device is controlled to extend into the concave characteristic position at the concave characteristic angle, and the blowing power is used to blow the dust first, and then the concave characteristic position is sucked with the preset suction power to remove the dust;

[0023] After dust removal, the motor housing is painted using the pre-set immersion paint method and allowed to dry.

[0024] By adopting this technical solution, the motor housing needs to be dusted before being dipped in paint. Dust on the convex surface of the housing can be directly blown away by the system. For dust within the concave surface of the housing, the system first blows air and then sucks air to remove dust from the concave surface.

[0025] Optional dipping methods include:

[0026] Determine the motor housing height based on the three-dimensional model;

[0027] Determining the immersion depth of the motor housing into the preset paint bucket according to the motor housing height and the preset immersion amount;

[0028] According to the immersion depth value, the preset lifting device is controlled to immerse the motor housing into the paint bucket;

[0029] After the preset immersion time, the hoisting device is controlled to hoist the motor housing a certain distance at a preset test height, and two images of the upper end surface of the motor housing are successively obtained within a preset unit time interval;

[0030] Determine the downstream velocity of the paint feature according to the upper end surface image, the preset paint feature, and the unit interval time;

[0031] Match the lifting speed of the motor housing to the downstream speed;

[0032] Control the motor housing to immerse it again in the paint bucket, and control the lifting device at a lifting speed to slowly lift the motor housing.

[0033] By adopting the above technical solution, after the paint immersion of the motor housing is completed, the system first performs pre-lifting to determine the downstream speed of the paint that may appear on the surface of the motor housing, and matches the lifting speed of the motor housing by the downstream speed to ensure that the paint can always be located below the paint liquid level when the motor housing is lifted, thereby reducing the occurrence of paint on the surface of the motor housing.

[0034] Optionally, after the motor is slowly lifted, there is still a small amount of paint on the motor housing surface. The paint treatment methods include:

[0035] After the motor housing is lifted out of the paint bucket, the paint immersion image information of the motor housing surface is obtained;

[0036] Determine the paint feature position and paint falling path based on the paint dipping image information and the paint feature, and determine the paint feature type based on the paint feature's downstream velocity. The paint feature types include solidified paint and paint in the process of downstream.

[0037] Based on the paint hanging process in the downstream process, the estimated path of the paint hanging feature is determined according to the paint dipping image information and the paint hanging falling path;

[0038] Controlling a preset scraper device to press down with a preset cutoff width on the estimated passing path to form a cutoff line so that the paint feature stops flowing down, and controlling a preset suction device to extract the flowing paint at the cutoff line;

[0039] The scraper device is controlled to move upward with the cutoff line as the starting point, the estimated passing path and the paint characteristic path as the route, and the cutoff width to scrape off the paint on the surface of the motor housing where the paint flows down.

[0040] By adopting the above technical solution, when a paint feature appears to be flowing down, the system first presses out a cut-off line so that the paint will not continue to flow down, then absorbs the flowing paint, and finally removes the path through which the paint feature flows and then repairs it, so that the paint feature is less likely to affect the surface of the motor housing.

[0041] Optionally, also include:

[0042] After the paint feature is scraped off, the paint image information at the paint feature position is obtained;

[0043] Determine the scraping area and the length of the scraping area according to the paint image information and the preset exposed features of the motor;

[0044] A preset spray mask is matched to the scraped area according to its length, the spray mask having a spray blank area longer than the scraped area and corresponding to the scraped area, and a portion of the spray blank area that exceeds the length of the scraped area is used as a contrasting color block area;

[0045] Using the cutoff line as a reference, the spray mask is placed in front of the scraping area. The cutoff line is aligned with the bottom edge of the spray blank area. The preset spraying device is controlled to spray the scraping area through the spray blank area, and the color of the scraping area is obtained in real time.

[0046] Stop painting when the color of the scraped area matches the color of the motor housing in the contrasting color block area.

[0047] By adopting the above technical solution, when spraying the scraped area, a suitable spray mask is selected to cover it, so that the paint is not easy to touch the outside of the scraped area, and by contrasting the color block area for color comparison, the color of the scraped area after re-spraying is consistent with the motor housing.

[0048] Optionally, the paint treatment method for the concave feature position on the motor housing includes:

[0049] According to the concave feature position, concave feature angle and the preset static placement of the motor housing, the paint-accumulated concave features where paint cannot be discharged are screened out from all the housing concave features;

[0050] Determine the depth of the concave surface feature from the three-dimensional model according to the paint accumulation concave surface feature;

[0051] Determine a paint accumulation area in the paint accumulation concave feature according to the concave feature depth and the concave feature angle;

[0052] Controlling a preset suction device to extend into the paint accumulation area of ​​the paint accumulation concave surface feature to extract the paint, and recycling the extracted paint to inject it into the preset painting equipment;

[0053] According to the concave surface features of the paint accumulation, a preset suction filter cotton ball is matched, and the preset blowing device is controlled to put the suction filter cotton ball on the end of the blowing head in the preset material storage basket, and the blowing device is controlled to extend the blowing head into the concave surface features of the paint accumulation for blowing.

[0054] In summary, this application includes at least one of the following beneficial technical effects:

[0055] The hot air generated by the cooling fan is used as a driving force to drive the driving fan, which in turn drives the cleaning mechanism to remove dust from the heat sink. Since the cooling fan can rotate when the motor is running, the cleaning mechanism can always remove dust without consuming additional electricity, which is more convenient. In addition, the cleaning mechanism is driven by wind power, so the cleaning frequency is not high, which is less likely to cause damage to the cleaning mechanism and extend the life of the cleaning mechanism.

[0056] When the brush sweeps the dust off the heat sink, the negative pressure generated by the air outlet causes the dust suction holes to draw the dust into the cleaning ring and drop it into the dust collection box. By providing the arc-shaped protrusion, the cleaning mechanism can vibrate up and down while cleaning, allowing the brush to clean the heat sink more effectively. Moreover, when the cleaning mechanism vibrates up and down, the dust in the cleaning ring is evenly shaken off and dropped into the dust collection box, and is not easily accumulated in the cleaning ring.

[0057] After the paint dipping of the motor housing is completed, the system first performs a pre-lifting to determine the downstream speed of the paint that may appear on the surface of the motor housing, and matches the lifting speed of the motor housing by the downstream speed to ensure that the paint can always be located below the paint liquid level when the motor housing is lifted, thereby reducing the generation of paint on the surface of the motor housing; when a paint feature that is flowing down appears, the system first presses out a cut-off line so that the paint will not continue to flow down, and then absorbs the flowing paint, and finally removes the path through which the paint feature flows and then repairs it, so that the paint feature is not easy to affect the surface of the motor housing; when spraying the scraped area, it is covered by selecting a suitable spray mask so that the paint is not easy to touch the outside of the scraped area, and the color is compared by comparing the color block area so that the color of the scraped area after re-spraying is consistent with the motor housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a schematic diagram of the overall structure of a three-phase asynchronous motor according to an embodiment of the present invention;

[0059] Figure 2 is an exploded view of the motor body and heat dissipation end of an embodiment of the present invention;

[0060] Figure 3 Schematic diagram of the cleaning mechanism and driving structure of an embodiment of the present invention;

[0061] Figure 4 is a cross-sectional view of a reversing mechanism according to an embodiment of the present invention;

[0062] Figure 5 This is a flow chart of a method for manufacturing a three-phase asynchronous motor according to an embodiment of the present invention;

[0063] Figure 6 is a method flow chart of the paint dipping method according to an embodiment of the present invention;

[0064] Figure 7 is a method flow chart of a paint treatment method according to an embodiment of the present invention;

[0065] Figure 8 This is a flow chart of a method for repairing a place where paint flows down the drain according to an embodiment of the present invention;

[0066] Figure 9 4 is a flow chart of a method for treating a concave feature position with paint according to an embodiment of the present invention.

[0067] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Motor body; 2. Heat dissipation end; 21. Cooling fan; 22. Back cover; 23. Air outlet; 3. Heat sink; 4. Cleaning mechanism; 41. Cleaning ring; 411. Dust suction hole; 42. Driving block; 43. Brush; 44. Toggle block; 441. Mounting slot; 45. Ash box; 46. Negative pressure pipe; 461. Air vent; 5. Driving screw; 51. Threaded section; 52. Gear wheel mounting part; 6. Driving fan; 7. Reversing mechanism; 71. Reversing rod; 711. Arc protrusion; 72. First gear wheel; 73. Second gear wheel; 74. First abutment portion; 75. Second abutment portion. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0069] The embodiment of the present application discloses a three-phase asynchronous motor.

[0070] Reference Figure 1 and Figure 2 A three-phase asynchronous motor includes a motor body 1 and a heat sink 2 mounted at the rear of the motor body 1. The motor body 1 houses a stator and a rotor, which are the motor's operating units. The heat sink 2 includes a cooling fan 21 and a rear cover 22 that covers the cooling fan 21 at the rear of the motor body 1. The heat sink 2 is used to dissipate heat from the motor during operation.

[0071] To improve the heat dissipation efficiency of the motor, the motor body 1 is also provided with circumferentially spaced heat sinks 3. The heat sinks 3 are long and arranged along the length of the motor body 1. Because the heat sinks 3 generate static electricity and attract dust during motor operation, the motor is also provided with a cleaning mechanism 4 for cleaning dust from the heat sinks 3 and a drive structure for driving the cleaning mechanism 4.

[0072] Reference Figure 1 and Figure 3 The cleaning mechanism 4 includes a cleaning ring 41 and a driving block 42. The cleaning ring 41 is annular and is mounted on the outside of the motor body 1. The cleaning ring 41 has a brush 43 on the inner circumference of the motor body 1. The brush 43 extends between adjacent heat sinks 3 and abuts against the heat sink 3 to clean dust on the heat sink 3.

[0073] The bottom of the cleaning ring 41 is integrally connected to a toggle block 44, and the toggle block 44 has a square through-slot 441 extending along the length of the motor body 1. The driving block 42 is vertically slidably mounted in the mounting slot 441.

[0074] Reference Figure 2 and Figure 3 The driving structure includes a driving screw 5, a driving fan 6 and a reversing mechanism 7 arranged between the driving screw 5 and the driving fan 6.

[0075] The drive screw 5 is rotatably mounted at the bottom of the motor body 1 and extends along its length. The drive screw 5 comprises a screw segment and a gear wheel mounting portion 52 connected to the threaded segment 51 and located at one end of the drive screw 5. The gear wheel mounting portion 52 has a polygonal cross-section. The threaded segment 51 of the drive screw 5 extends through and is threadedly connected to the drive block 42. As the drive screw 5 rotates, the drive block 42 moves horizontally on the drive screw 5, driving the cleaning ring 41 to sweep away dust.

[0076] The heat dissipation end 2 has an air outlet 23 at the bottom side of the rear cover 22, and the air outlet 23 is used to blow out the hot air guided by the heat dissipation fan 21. The driving fan 6 is rotatably installed at the air outlet 23 and can rotate under the blowing of the hot air.

[0077] Reference Figure 3 and Figure 4 The reversing mechanism 7 is used to change the rotation direction of the driving screw 5 so that the cleaning mechanism 4 can reciprocate and clean on the motor body 1. The reversing mechanism 7 includes a reversing rod 71, a first gear wheel 72 and a second gear wheel 73.

[0078] Reference Figure 1 、 Figure 3 and Figure 4 The reversing rod 71 is horizontally slidably mounted on the bottom of the motor body 1 and is located below the drive screw 5 and the cleaning ring 41. The reversing rod 71 is arranged parallel to the drive screw 5. The reversing rod 71 has a first abutting portion 74 and a second abutting portion 75, which are respectively located on either side of the toggle block 44. When the toggle block 44 moves on the drive screw 5 under the drive block 42, the toggle block 44 can abut against the first abutting portion 74 or the second abutting portion 75, thereby driving the reversing rod 71 to move horizontally.

[0079] The first gear wheel 72 and the second gear wheel 73 are both fixedly mounted on the reversing rod 71 and can move synchronously with the reversing rod 71. The first gear wheel 72 and the second gear wheel 73 are both sleeved on the gear wheel mounting portion 52 of the driving screw 5 and are adapted to the polygonal cross-section of the gear wheel mounting portion 52. The first gear wheel 72 and the second gear wheel 73 can also be respectively connected to the driving fan 6 for switchable use.

[0080] When the first gear wheel 72 is connected to the driving fan 6, the second gear wheel 73 is separated from the driving fan 6, and the first gear wheel 72 serves as an intermediate transmission member between the driving fan 6 and the driving screw 5. At this time, the driving screw 5 rotates forward, and the cleaning mechanism 4 moves forward on the motor body 1.

[0081] When the toggle block 44 moves forward until it abuts against the first abutment portion 74 and drives the reversing rod 71 to move, the first gear wheel 72 and the second gear wheel 73 switch positions. At this time, the second gear wheel 73 is connected to the driving fan 6, and the first gear wheel 72 is separated from the driving fan 6. The driving screw 5 is reversed, and the cleaning mechanism 4 moves in the opposite direction on the motor body 1.

[0082] When the toggle block 44 moves in the reverse direction until it contacts the second contact portion 75 and drives the reversing rod 71 to move, the first gear wheel 72 and the second gear wheel 73 switch positions again, driving the screw rod 5 to rotate forward.

[0083] Reference Figure 3 Furthermore, to collect and dispose of dust swept from the heat sink 3, a cleaning ring 41 is hollow and has dust collection holes 411 spaced circumferentially along the inner wall of the cleaning ring 41 facing the motor body 1. Brushes 43 sweep dust from the heat sink 3 and draw it into the hollow cavity through the dust collection holes 411. A dust collection box 45 is provided at the bottom of the cleaning ring 41, into which dust entering through the dust collection holes 411 falls for collection.

[0084] Reference Figure 1 、 Figure 2 and Figure 3 To ensure suction in the dust collection hole 411, a negative pressure tube 46 is provided along the length of the drive screw 5, extending through the cleaning ring 41. Air inlets 461 are spaced apart along the length of the negative pressure tube 46. The air inlets 461 communicate with the dust collection hole 411 through the hollow interior of the cleaning ring 41. The end of the negative pressure tube 46 is located near the air outlet 23 of the heat dissipation end 2, and the end of the negative pressure tube 46 is shaped like a bell. As the air outlet 23 blows outward, negative pressure is generated, allowing air to enter the dust collection hole 411 and flow out through the interior of the cleaning ring 41 and the air inlets 461, exiting from one end of the negative pressure tube 46.

[0085] Reference Figure 1 and Figure 3 Furthermore, arc protrusions 711 are provided at intervals on the top of the reversing rod 71 along the length direction, and the bottom of the toggle block 44 of the cleaning mechanism 4 abuts against the top of the reversing rod 71. When the cleaning mechanism 4 moves horizontally for cleaning, the toggle block 44 causes the cleaning mechanism 4 to vibrate slightly up and down under the action of the arc protrusion 711, so that the brush 43 cleans the heat sink 3 more thoroughly, and the dust in the inner cavity of the cleaning ring 41 can be evenly shaken down into the dust box 45 under the vibration.

[0086] Based on the same inventive concept, an embodiment of the present invention provides a method for manufacturing a three-phase asynchronous motor. In this embodiment, the system pre-treats the surface of the motor housing through steps such as dust removal, varnishing, and drying, and handles any abnormalities that may occur on the motor housing after varnishing.

[0087] Reference Figure 5 A method for manufacturing a three-phase asynchronous motor comprises the following steps:

[0088] Step S100: acquiring surface image information of the motor housing, and establishing a three-dimensional model according to the surface image information.

[0089] Surface image information refers to the overall appearance of the motor housing, captured by a camera around the motor housing. Before surface treatment, the motor housing is placed on a processing platform, where a camera captures a complete image of the motor housing.

[0090] The three-dimensional model refers to the spatial three-dimensional model data of the motor housing size and structural parameters obtained by analyzing and processing the surface image information. The three-dimensional model is stored in the system database.

[0091] Step S101: determining the convex surface features and the concave surface features of the shell according to the three-dimensional model analysis.

[0092] The convex surface feature of the housing refers to the surface on the motor housing that bulges outward, and the concave surface feature of the housing refers to the hole on the motor housing that is concave inward, such as a threaded hole.

[0093] By analyzing the three-dimensional model of the motor housing, the location of the housing convex surface features and the location of the housing concave surface features can be directly determined from the three-dimensional model.

[0094] Step S102: controlling a preset blowing device to blow air from top to bottom along the circumferential direction to the convex surface features of the shell at a preset blowing power to remove dust.

[0095] For the convex surface of the housing, since its surface is protruding outward, the blowing device is used to blow air directly to the surface to blow away the dust. The blowing method is to blow air from top to bottom and circumferentially, so that the dust is not easy to fall on the surface of the motor housing again.

[0096] The blowing power is the power of the blowing device set by the technician when blowing dust, which will not be described here.

[0097] Step S103: determining the concave surface feature position and the concave surface feature angle according to the three-dimensional model and the concave surface feature of the shell.

[0098] Since dust easily accumulates in the concave surface features of the shell and is difficult to blow out by direct air, targeted treatment is required.

[0099] The concave feature position refers to the position of the housing concave feature on the motor housing, and the concave feature angle refers to the concave angle of the housing concave feature on the motor housing.

[0100] The concave feature position and concave feature angle can be obtained by directly analyzing the shell concave features in the three-dimensional model.

[0101] Step S104: controlling the blowing device to extend into the concave characteristic position at the concave characteristic angle, first blowing air with a blowing power to raise dust, and then sucking air from the concave characteristic position at a preset suction power to remove dust.

[0102] When the concave feature position and concave feature angle are determined, the system controls the blowing device to extend into the concave feature position, first blowing to lift up the dust inside the concave feature of the shell, and then performing dust suction to suck away the lifted dust and the dust still adsorbed in the concave feature of the shell.

[0103] The suction power is the power of the blowing device set by the technician when being used for suction, and will not be described in detail here. In the present embodiment, the suction power is greater than the blowing power.

[0104] Step S105: After dust removal, the motor housing is painted using a preset dipping method, and the motor housing is dried.

[0105] After dust removal is completed, the surface of the motor housing is painted to protect the motor surface, and finally the paint on the surface of the motor housing is dried. In this embodiment, the system paints the motor housing by a dipping method, which will not be described in detail here and will be described in detail in subsequent embodiments.

[0106] Reference Figure 6 , the varnish dipping method comprises the following steps:

[0107] Step S200: determining the motor housing height according to the three-dimensional model.

[0108] The motor housing height refers to the overall height of the motor housing when it is placed in the paint bucket. The motor housing height can be directly measured and analyzed from the 3D model.

[0109] Step S201: determining an immersion depth of the motor housing into a preset paint bucket according to the motor housing height and a preset immersion amount.

[0110] When the motor housing is immersed in the paint bucket, the top of the motor housing needs to be located a certain distance below the paint liquid level to ensure that the surface of the motor housing can be completely painted. This distance is the immersion amount. The immersion amount is a reference value set by technicians and will not be elaborated here.

[0111] The immersion depth value refers to the depth of the motor housing immersed in the paint bucket, which refers to the height difference between the bottom of the motor housing and the paint liquid surface.

[0112] The immersion depth value is the sum of the motor housing height and the immersion volume.

[0113] Step S202: controlling a preset hoisting device to immerse the motor housing into the paint bucket according to the immersion depth value.

[0114] Since the motor housing is heavy, it needs to be hoisted by a hoisting device, which is used to lift the motor housing and place it into the paint bucket.

[0115] After determining the immersion depth value, the system controls the lifting device to immerse the motor housing into the specified position of the paint bucket.

[0116] Step S203: After the preset immersion time, the hoisting device is controlled to hoist the motor housing a certain distance at a preset test height, and two images of the upper end surface of the motor housing are successively acquired within a preset unit time interval.

[0117] The immersion time is the time set by the technicians for the motor housing to be immersed in the paint. After soaking for the immersion time, the paint can fully adhere to the surface of the motor housing, which will not be elaborated here.

[0118] In this embodiment, after the motor housing is lifted from the paint bucket, the paint on the motor housing surface will flow downward, forming paint hanging. To reduce the occurrence of paint hanging, it is necessary to first understand the speed of the paint flowing downward on the motor housing surface. This can be determined by first lifting the motor housing a short distance and observing the paint hanging on the motor housing.

[0119] The test height is the height to which the technicians pre-lift the motor housing in order to determine the paint flow rate, which will not be described in detail here.

[0120] The upper end surface image refers to the surface image of the motor housing exposed to the paint liquid surface during the pre-lift test after paint immersion, captured by a camera. Paint residue will appear in this upper end surface image. In this embodiment, two upper end surface images must be acquired sequentially to determine the change in characteristic parameters between the two images. The unit interval is the time interval between the two upper end surface images, set by the technician, and is not detailed here.

[0121] Step S204: determining the downstream velocity of the paint hanging feature according to the upper end surface image, the preset paint hanging feature and the unit interval time.

[0122] The positions of the same paint feature at different times can be determined in two successive upper end surface images, and the downstream velocity of the paint feature can be determined based on the distance between different positions in the two upper end surface images and the unit interval time.

[0123] Step S205: Matching the lifting speed of the motor housing according to the downstream speed.

[0124] Because the motor housing's lifting speed is no greater than the paint feature's downward flow speed, the paint feature is always located at or below the paint liquid level when it is formed, preventing the paint from flowing onto the motor housing surface. In this embodiment, the motor housing's lifting speed is consistent with the paint feature's downward flow speed.

[0125] Step S206: Control the motor housing to be immersed in the paint bucket again, and control the hoisting device to slowly lift the motor housing at a lifting speed.

[0126] After the lifting speed of the motor housing is determined, the motor housing is lifted at the lifting speed so that no paint hanging features are formed on the surface of the motor housing.

[0127] Reference Figure 7 Although the lifting speed of the motor housing is controlled, due to various interference factors, a small amount of paint still remains on the surface of the motor housing after the motor is slowly lifted. The paint treatment method includes the following steps:

[0128] Step S300: After the motor housing is lifted out of the paint bucket, paint immersion image information of the motor housing surface is obtained.

[0129] The paint immersion image information refers to the image of the motor housing surface obtained by the camera when the motor housing is finished being dipped in paint and lifted out of the paint bucket. At this time, there may be paint hanging features on the surface of the motor housing, and the paint hanging features can appear in the paint immersion image information.

[0130] Step S301: Determine the paint feature position and paint falling path according to the paint dipping image information and the paint feature, and determine the paint feature type according to the downstream speed of the paint feature. The paint feature type includes solidified paint and paint in the downstream process.

[0131] The paint feature position refers to the position of the paint feature on the surface of the motor housing, and the paint falling path refers to the path that the paint feature has passed when flowing down the surface of the motor housing.

[0132] The paint feature position and the paint falling path can be obtained by identifying and analyzing the paint features in the paint immersion image information.

[0133] In this embodiment, the paint feature may be solidified and no longer flowing downward, or it may be flowing downward. The paint feature type is judged by the downstream speed of the paint feature. The paint feature with a speed of 0 is the solidified paint, and the paint feature with a speed not 0 is the paint in the process of flowing downward.

[0134] The system uses different methods to process different types of paint features.

[0135] Step S302: Based on the paint being flown downstream, an estimated path of the paint feature is determined according to the paint dipping image information and the paint falling path.

[0136] The estimated passing path refers to the route that the paint feature that is in the downstream process may pass through when it continues to flow downstream. The estimated passing path continues the direction of the paint falling path and continues to extend downward. Therefore, when the paint falling path is determined, the estimated passing path of the paint feature when it continues to flow downstream can be determined from the paint immersion image information.

[0137] Step S303: Control the preset scraper device to press down with a preset cutoff width on the estimated passing path to form a cutoff line so that the paint feature stops flowing down, and control the preset suction device to extract the flowing paint at the cutoff line.

[0138] The scraper device is used to remove paint features.

[0139] The cut-off width is the width of the scraping line set by the technician when scraping off the paint features using the scraper device, and will not be described in detail here.

[0140] In this embodiment, a scraper device first presses down on the estimated path to create a cutoff line. This cutoff line divides the estimated path in two, preventing paint particles from flowing further down the cutoff line and instead converging there. Once the paint particles have accumulated at the cutoff line, a suction device removes them, allowing the removed paint to be reused.

[0141] Step S304: starting from the cutoff line, taking the estimated path and the paint characteristic path as the route and controlling the scraper device to move upward according to the cutoff width to scrape off the paint on the surface of the motor housing where the paint flows downstream.

[0142] The paint thickness along the paint feature path is greater than the normal paint thickness of the motor housing due to paint flow through the paint feature. Therefore, all paint along the paint feature path needs to be scraped off. The estimated path, which has already been crossed by the paint feature, and the paint feature path need to be scraped off. The scraping starts at the cutoff line and the scraping path width is the cutoff width. The scraping path is the estimated path and the paint feature path.

[0143] For the solidified paint feature, since there is no estimated passing path, the lowest end of the paint feature path is used as the truncation line, the truncation width is used as the scraping width, and the paint feature is directly scraped along the paint feature path.

[0144] Reference Figure 8 After scraping off the paint where the paint flows, a blank area will appear. The blank area needs to be repaired. The repair method includes the following steps:

[0145] Step S400: After the paint feature is scraped off, the paint image information at the paint feature position is obtained.

[0146] The paint image information refers to the surface image of the motor housing obtained by the camera after the paint features are removed. The image of the exposed motor housing that is not covered by paint will appear in the paint image information.

[0147] Step S401: determining a scraping area and a length of the scraping area according to the paint image information and preset exposed features of the motor.

[0148] Exposed motor features are those surfaces of the motor housing that are not painted.

[0149] The scraped area refers to the area on the motor housing surface left uncovered by the scraper after the paint features have been removed. This area is not covered with paint and will require repainting in subsequent processes. The scraped area length refers to the length of the motor housing surface left uncovered by the scraper. Both the scraped area and the scraped area length can be determined by image recognition and analysis of exposed motor features in the paint image data.

[0150] Step S402: Matching a preset spray mask corresponding to the scraped area length, the spray mask having a spray blank area longer than the scraped area length and corresponding to the scraped area, and the portion of the spray blank area that exceeds the scraped area length is used as a contrasting color block area.

[0151] In this embodiment, when painting the scraped area, a spray mask is placed between the motor housing and the painting tool to prevent paint from being sprayed onto the already painted motor housing. The spray mask has multiple, long, blank slots spaced apart, which serve as the blank areas for painting. The blank areas vary in length and have a uniform width, the cutoff width. Once the length of the scraped area is determined, the system selects a matching blank area for painting based on the length of the scraped area. The blank area for painting should be slightly longer than the length of the scraped area.

[0152] The contrasting color block area is used for color contrast. When painting the scraped-off area, the finished color must match the already painted motor housing surface color. Therefore, constant comparison is necessary during painting. By selecting a blank area on the paint mask that is longer than the scraped-off area, the area beyond the scraped-off area becomes the contrasting color block area. This area does not need to be painted and is used solely for color contrast.

[0153] Step S403: Using the cutoff line as a reference, the spray mask is placed in front of the scraped area, the cutoff line is aligned with the bottom edge of the spray blank area, and the preset spraying device is controlled to spray paint the scraped area through the spray blank area, and the color of the scraped area is obtained in real time.

[0154] After determining the paint mask, place it in front of the scraped area, aligning the blank area with the bottom of the scraped area, with the top serving as the contrasting color block. Use the paint sprayer to paint the blank area, excluding the contrasting color block, while always comparing the paint color to the motor housing color in the contrasting color block. The scraped area color refers to the color of the scraped area after painting. The color of the scraped area will gradually deepen after repeated painting.

[0155] Step S404: When the color of the scraped area is consistent with the color of the motor housing in the contrasting color block area, stop spraying paint.

[0156] The standard for completing the spraying of the scraped area is that the color of the scraped area is consistent with the color of the motor housing in the contrasting color block area. When the two colors are consistent, remove the spray mask.

[0157] Reference Figure 9 After the motor housing is lifted from the paint bucket, in addition to the paint features that may appear on the motor surface, paint may also accumulate on the concave feature locations of the motor housing and prevent it from flowing out. The concave feature locations in this embodiment specifically refer to threaded holes. When the paint in the threaded holes solidifies, it will affect the normal use of the threaded holes. Therefore, the paint on the concave feature locations needs to be treated. The paint treatment method for the concave feature locations on the motor housing includes the following steps:

[0158] Step S500: selecting paint-accumulated concave features from which paint cannot be discharged from all the concave features of the housing according to the concave feature positions, concave feature angles, and the preset static placement configuration of the motor housing.

[0159] Paint accumulation refers to concave features on the housing where paint accumulates. Whether paint accumulates on these features and prevents them from flowing out is affected by the location and angle of the concave feature, as well as the static placement of the motor housing. When the motor housing is static, concave features with an upward angle may contain paint residue.

[0160] Step S501: determining the depth of the concave surface feature from the three-dimensional model according to the paint accumulation concave surface feature.

[0161] The concave feature depth refers to the depth of the paint-accumulated concave feature where paint remains. The concave feature depth can be obtained by measuring and analyzing the specific paint-accumulated concave feature in the three-dimensional model.

[0162] Step S502: determining a paint accumulation area in the paint accumulation concave feature according to the concave feature depth and the concave feature angle.

[0163] The paint accumulation area refers to the location of residual paint within a concave paint accumulation feature. Paint does not remain entirely at the bottom of the concave paint accumulation feature. Instead, the paint accumulates at the lowest angle within the concave paint accumulation feature, while paint at higher angles typically flows out. The paint accumulation area can be determined by analyzing the concave paint accumulation feature based on its depth and angle.

[0164] Step S503: controlling a preset suction device to extend into the paint accumulation area in the paint accumulation concave surface feature to extract the paint, and recycling the extracted paint to inject it into the preset paint spraying equipment.

[0165] After determining the paint accumulation area in the paint accumulation concave feature, the system controls the suction device to extend into the paint accumulation area in the paint accumulation concave feature according to the specific concave feature angle and concave feature depth to suck away the paint. The sucked away paint can be recovered to the painting equipment and sprayed again into the scraping area.

[0166] Step S504: Match the preset suction filter cotton ball according to the paint accumulation concave surface feature, control the preset blowing device to put the suction filter cotton ball on the end of the blowing head in the preset material storage basket, and control the blowing device to extend the blowing head into the paint accumulation concave surface feature for blowing.

[0167] After the residual paint is sucked away, some paint still adheres to the inner wall of the paint accumulation concave feature, specifically the thread of the threaded hole in this embodiment, and will affect the normal tightening of the bolt after solidification.

[0168] In this embodiment, a material storage basket is placed on one side of the workbench, and a suction filter cotton ball is placed in the storage basket. After the paint in the concave paint-accumulated feature is sucked away by the suction device, the blowing device removes the suction filter cotton ball from the storage basket and places it over the end of the blowing head. The blowing head is then inserted into the concave paint-accumulated feature. The suction filter cotton ball then blocks the outlet of the concave paint-accumulated feature. The blowing device then blows air, and paint adhering to the inner wall of the concave paint-accumulated feature is blown onto the suction filter cotton ball for disposal.

[0169] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A three-phase asynchronous motor, comprising a motor body (1) and a heat dissipation end (2) provided at the rear of the motor body (1) and used to dissipate heat from the motor body (1), the heat dissipation end (2) comprising a heat dissipation fan (21) and a rear cover (22) covering the heat dissipation fan (21), a heat dissipation fin (3) being provided in the circumferential direction of the motor body (1), and characterized in that: The motor body (1) further comprises a driving screw (5) rotatably arranged at the bottom of the motor body (1) and a cleaning mechanism (4) slidably mounted on the driving screw (5) and in contact with the heat sink (3) for cleaning dust accumulated on the surface of the heat sink (3); the rear cover (22) has an air outlet (23) for the heat dissipation fan (21) to guide hot air to blow out, and the air outlet (23) is rotatably provided with a driving fan (6) driven by hot air; the driving fan (6) is connected to the driving screw (5) to drive the driving screw (5) to rotate and then drive the cleaning mechanism (4) to move; The cleaning mechanism (4) has a toggle block (44), and the cleaning mechanism (4) also includes a cleaning ring (41) sleeved on the outside of the motor body (1) and a driving block (42) vertically sliding on the cleaning ring (41) and threadedly connected to the driving screw (5); the cleaning ring (41) has a brush (43); the toggle block (44) is located at the bottom of the cleaning ring (41) and the toggle block (44) is penetrated along the length direction of the driving screw (5) to open a mounting groove (441), and the driving block (42) is located in the mounting groove (441).

2. A three-phase asynchronous motor according to claim 1, characterized in that: A reversing mechanism (7) for changing the rotation direction of the driving screw (5) is provided between the driving fan (6) and the driving screw (5), and the reversing mechanism (7) comprises a reversing rod (71) and a first gear wheel (72) and a second gear wheel (73) mounted on the reversing rod (71); the first gear wheel (72) and the second gear wheel (73) are both used to connect the driving fan (6) and the driving screw (5) and are switched for forward and reverse rotation; The reversing rod (71) is arranged in parallel with the driving screw (5), and the reversing rod (71) has a first abutting portion (74) and a second abutting portion (75) at both ends of the toggle block (44); when the toggle block (44) moves, the reversing rod abuts against the first abutting portion (74) and the second abutting portion (75) to drive the reversing rod (71) to move, and then the first gear wheel (72) and the second gear wheel (73) are switched for use.

3. A three-phase asynchronous motor according to claim 2, characterized in that: The bottom of the toggle block (44) abuts against the reversing rod (71), and the reversing rod (71) is provided with arc protrusions (711) at intervals along the length direction.

4. A three-phase asynchronous motor according to claim 3, characterized in that: The cleaning ring (41) is hollow inside and has a dust suction hole (411) circumferentially provided on the inner wall of the motor body (1); a negative pressure tube (46) is provided through the cleaning ring (41) along the length direction of the driving screw (5); one end of the negative pressure tube (46) is close to the air outlet (23) and is in a bell-shaped shape; air inlet (461) is provided at intervals along the length direction of the negative pressure tube (46); and a dust collecting box (45) for collecting dust is provided on the cleaning ring (41).

5. A three-phase asynchronous motor according to claim 2, characterized in that: One end of the driving screw rod (5) has a gear wheel mounting portion (52) with a polygonal cross section, and the first gear wheel (72) and the second gear wheel (73) both slide on the gear wheel mounting portion (52).

6. A method for manufacturing a three-phase asynchronous motor, applied to a three-phase asynchronous motor as claimed in any one of claims 1 to 5, characterized in that: include: Acquire surface image information of the motor housing and establish a three-dimensional model based on the surface image information; Determine the shell convex surface features and shell concave surface features based on the three-dimensional model analysis; Controlling a preset blowing device to blow air from top to bottom along the circumference of the housing convex surface features at a preset blowing power to remove dust; Determine the concave feature position and concave feature angle according to the three-dimensional model and the concave feature of the shell; The blowing device is controlled to extend into the concave characteristic position at the concave characteristic angle, and the blowing power is used to blow the dust first, and then the concave characteristic position is sucked with the preset suction power to remove the dust; After dust removal, the motor housing is painted using the pre-set immersion paint method and allowed to dry.

7. The method for manufacturing a three-phase asynchronous motor according to claim 6, characterized in that: Dipping methods include: Determine the motor housing height based on the three-dimensional model; Determining the immersion depth of the motor housing into the preset paint bucket according to the motor housing height and the preset immersion amount; According to the immersion depth value, the preset lifting device is controlled to immerse the motor housing into the paint bucket; After the preset immersion time, the hoisting device is controlled to hoist the motor housing a certain distance at a preset test height, and two images of the upper end surface of the motor housing are successively obtained within a preset unit time interval; Determine the downstream velocity of the paint feature according to the upper end surface image, the preset paint feature, and the unit interval time; Match the lifting speed of the motor housing to the downstream speed; Control the motor housing to immerse it again in the paint bucket, and control the lifting device at a lifting speed to slowly lift the motor housing.

8. The method for manufacturing a three-phase asynchronous motor according to claim 7, characterized in that: After the motor is slowly lifted, there is still a small amount of paint on the surface of the motor housing. The methods for dealing with the paint include: After the motor housing is lifted out of the paint bucket, the paint immersion image information of the motor housing surface is obtained; Determine the paint feature position and paint falling path based on the paint dipping image information and the paint feature, and determine the paint feature type based on the paint feature's downstream velocity. The paint feature types include solidified paint and paint in the process of downstream. Based on the paint hanging process in the downstream process, the estimated path of the paint hanging feature is determined according to the paint dipping image information and the paint hanging falling path; Controlling a preset scraper device to press down with a preset cutoff width on the estimated passing path to form a cutoff line so that the paint feature stops flowing down, and controlling a preset suction device to extract the flowing paint at the cutoff line; The scraper device is controlled to move upward with the cutoff line as the starting point, the estimated passing path and the paint characteristic path as the route, and the cutoff width to scrape off the paint on the surface of the motor housing where the paint flows down.

9. The method for manufacturing a three-phase asynchronous motor according to claim 8, characterized in that: Also includes: After the paint feature is scraped off, the paint image information at the paint feature position is obtained; Determine the scraping area and the length of the scraping area according to the paint image information and the preset exposed features of the motor; A preset spray mask is matched to the scraped area according to its length, the spray mask having a spray blank area longer than the scraped area and corresponding to the scraped area, and a portion of the spray blank area that exceeds the length of the scraped area is used as a contrasting color block area; Using the cutoff line as a reference, the spray mask is placed in front of the scraping area. The cutoff line is aligned with the bottom edge of the spray blank area. The preset spraying device is controlled to spray the scraping area through the spray blank area, and the color of the scraping area is obtained in real time. Stop painting when the color of the scraped area matches the color of the motor housing in the contrasting color block area.

10. The method for manufacturing a three-phase asynchronous motor according to claim 7, characterized in that: Methods for painting concave features on motor housings include: According to the concave feature position, concave feature angle and the preset static placement of the motor housing, the paint-accumulated concave features where paint cannot be discharged are screened out from all the housing concave features; Determine the depth of the concave surface feature from the three-dimensional model according to the paint accumulation concave surface feature; Determine a paint accumulation area in the paint accumulation concave feature according to the concave feature depth and the concave feature angle; Controlling a preset suction device to extend into the paint accumulation area of ​​the paint accumulation concave surface feature to extract the paint, and recycling the extracted paint to inject it into the preset painting equipment; According to the concave surface features of the paint accumulation, a preset suction filter cotton ball is matched, and the preset blowing device is controlled to put the suction filter cotton ball on the end of the blowing head in the preset material storage basket, and the blowing device is controlled to extend the blowing head into the concave surface features of the paint accumulation for blowing.

Images