A stator and rotor core image recognition automatic alignment and shaping process

Abstract

The invention discloses an automatic alignment and shaping process for stator and rotor cores by image recognition, which comprises the following steps: S1, loading, loading the iron core to be processed; S2, identification and alignment, identifying the current angle of the iron core by a CCD camera, if the current iron core angle is correct, proceeding to the next step, if the current iron core angle is incorrect, rotating the iron core angle for correction and alignment; S3, shaping, placing the iron core in a shaping device for shaping; S4, turning over, turning the shaped iron core upside down; S5, marking, marking the back of the iron core; S6, unloading inspection, performing manual inspection on the iron core after unloading, identifying the angular position of the iron core after loading by an image recognition device, and when the angular position of the iron core is incorrect, driving the placement table to rotate to drive the iron core to correct the position to ensure the accuracy of the iron core position, thereby ensuring the accuracy and quality of subsequent stamping and shaping, and effectively improving production efficiency.

Description

Technical Field

[0001] The invention relates to the field of iron core shaping, and in particular to an automatic alignment and shaping process for stator and rotor iron cores by image recognition. Background Art

[0002] With the continuous development of society, new energy vehicles are becoming more and more popular, which has led to a sharp increase in the demand for motors used in new energy vehicles. The stator and rotor cores are the core components of the motor. The quality of the stator and rotor production and processing will have a great impact on the quality and performance of the final motor.

[0003] The stator and rotor cores are made of multiple punching sheets stacked together during the production process. After stacking, they are placed on a shaping device for pressing and shaping. The shaping device has a lower die and an upper die. The lower die has a plug rod that matches the slots in the stator and rotor punching sheets. The slots on the rotor are magnetic steel slots. The upper die moves downward under the action of a power source for pressing and shaping, during which the plug rod is inserted into the slots of the stator and rotor. This requires high accuracy in the placement of the stator and rotor. Once there is a deviation between the plug rod on the lower die and the slots of the stator and rotor, it is easy to cause damage to the mold and the stator and rotor. At present, most of the staff are required to manually adjust the placement of the stator and rotor, resulting in low production efficiency and uncontrollable accuracy in the positioning of the stator and rotor. It is also difficult to apply to automated mass production. Summary of the invention

[0004] In order to further improve production efficiency and positioning accuracy, the present application provides a stator and rotor core image recognition automatic alignment and shaping process.

[0005] The present application provides a stator and rotor core image recognition automatic alignment and shaping process, which adopts the following technical solutions:

[0006] A stator and rotor core image recognition automatic alignment and shaping process, comprising the following steps:

[0007] S1, loading, loading the iron core to be processed;

[0008] S2, identification and alignment, the current angle of the core is identified by the CCD camera. If the current core angle is correct, the next step is performed. If the current core angle is incorrect, the core angle is rotated to correct the alignment.

[0009] S3, shaping, placing the core in a shaping device for shaping;

[0010] S4, turning over, turning the iron core upside down after the shaping process;

[0011] S5, marking, marking the back of the core;

[0012] S6, material cutting inspection, manual inspection of the iron core after cutting.

[0013] Optionally, step S2 is performed using an image recognition device, the CCD camera is disposed on the image recognition device, the image recognition device also includes a placement table for placing the iron core, a driving source for driving the iron core to rotate is disposed at the bottom of the placement table, the table top of the placement table is transparent, and a light source is disposed inside the placement table.

[0014] Optionally, a positioning bar is vertically lifted and connected on the table top of the placing table, and the positioning bar is arc-shaped and has multiple positioning bars, and the multiple positioning bars surround a positioning groove adapted to the iron core.

[0015] Optionally, a driving column is vertically lifted and connected to the table top of the placement table, a linkage mechanism is provided between the driving column and the positioning bar for driving the two to move in opposite directions, and a reset member is provided on the top of the driving column to drive its end to protrude from the table top of the placement table.

[0016] Optionally, the linkage mechanism includes a gear and a rack, the gear is rotatably connected inside the placement table, and the rack is respectively engaged with two sides of the gear, one of the racks is fixed to the driving column, and the other rack is fixed to the positioning bar.

[0017] Optionally, a switch button for controlling the opening and closing of the light source is provided inside the placement table, and the switch button is located below the driving column. After the driving column moves downward due to the pressure of the iron core, the end thereof presses the switch button to turn on the light source. After the driving column moves upward and reset under the action of the reset member, the end thereof disengages from the switch button to turn off the light source.

[0018] Optionally, the top of the positioning strip has an arc-shaped guide surface, and the arc-shaped guide surface is used to guide the iron core into the positioning groove.

[0019] Optionally, the inner wall of the positioning strip on one side facing the center of the circle has an outwardly protruding portion, and the protrusion is used for making linear contact with the outer wall of the iron core.

[0020] Optionally, the end of the protrusion is a rubber portion, and the rubber portion is partially used to be inserted into a vertical groove on the outer wall of the iron core.

[0021] Optionally, a push rod for driving the iron core to move upward is provided on the placement table, and a push cylinder for driving the iron core to move upward is provided at the bottom of the push rod.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The angle position of the iron core after loading is identified by the image recognition equipment. When the angle position of the iron core is incorrect, the placement table is driven to rotate to drive the iron core to correct the position to ensure the accuracy of the iron core position, thereby ensuring the accuracy and quality of subsequent stamping and shaping, avoiding damage to the shaping mold and the iron core due to misalignment, and no manual correction and adjustment operations are required during the period, which effectively improves production efficiency and is suitable for large-scale automated production;

[0024] 2. The light source installed in the placement table can provide fill-in light effect, making the image recognition of the current state of the core by the CCD camera clearer and more accurate, thus improving the accuracy of the correct position of the core;

[0025] 3. When the iron core is placed on the placement table, the driving column is moved down and the positioning bar is moved up synchronously to position and limit the iron core, so that the iron core is well and accurately placed in the positioning groove. While achieving the centering effect, it can also avoid the position displacement of the iron core when the placement table rotates, and effectively improve the stability of the iron core when correcting the angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of the image recognition device in the embodiment of the present application.

[0028] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0029] Figure 4 It is a top view of the iron core and the positioning strip in the embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Iron core; 2. Machine body; 3. Placement table; 4. CCD camera; 5. Rotating cylinder; 6. Light source; 7. Positioning bar; 8. Positioning groove; 9. Driving column; 10. Tension spring; 11. Bump; 12. Gear; 13. Rack; 14. Spring; 15. Arc guide surface; 16. Protrusion; 17. Switch button; 18. Ejection rod; 19. Ejection cylinder. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a process for automatic alignment and shaping of stator and rotor cores by image recognition.

[0034] like Figure 1 As shown, a stator and rotor core image recognition automatic alignment and shaping process includes the following steps:

[0035] S1, loading, loading the iron core 1 by a magnetic suction manipulator to the image recognition area on the shaping equipment;

[0036] S2, identification and alignment, using the image recognition device on the shaping device to identify the current angle position of the core 1. If there is a deviation in the angle of the core 1, the core 1 is driven to rotate circumferentially to achieve automatic correction. If the angle of the core 1 is correct, go directly to the next step;

[0037] S3, shaping, after the identification and alignment, the iron core 1 is transported to the shaping area of ​​the shaping equipment by a magnetic suction manipulator, and then the upper mold on the shaping equipment is pressed down to achieve the pressing shaping of the iron core 1;

[0038] S4, turning over, after the shaping is completed, the core 1 is transported to the turning over area by a magnetic suction manipulator, and then the core 1 is turned over; S5, marking, after the turning over is completed, the core 1 is transported to the marking area to mark the back of the core 1;

[0039] S6, unloading inspection, the iron core 1 after marking is unloaded, the quality of the iron core 1 is manually inspected in the unloading area, and qualified iron cores 1 and unqualified iron cores 1 are classified.

[0040] The above process can be used to realize automatic shaping of the stator and rotor cores 1, and before shaping, the angle of the core 1 can be identified and judged by image recognition equipment to determine whether it matches, and rotation correction can be performed in time, so as to ensure that the angle of the core 1 is in the correct state during subsequent shaping, thereby ensuring the accuracy and quality of the shaping, and effectively avoiding the situation where the final shaping mold and the core 1 are damaged due to the angle deviation of the core 1. In addition, there is no need for continuous manual adjustment, which effectively reduces manpower and improves production efficiency, and is suitable for large-scale automated production.

[0041] like Figure 2 and Figure 3 As shown, the image recognition device in step S2 includes a body 2, a placement table 3 and a CCD camera 4. The placement table 3 is rotatably connected to the body 2. The body 2 has a driving source for driving it to rotate, and the driving source is a rotating cylinder 5. The placement table 3 is used for placing the iron core 1. The CCD camera 4 is located directly above the placement table 3, and the table top of the placement table 3 is transparent. The interior of the placement table 3 is provided with a light source 6. In this way, after the iron core 1 is placed on the placement table 3, it is illuminated by the light source 6 at the bottom for fill light, which effectively improves the clarity of the CCD camera 4 for image recognition, thereby further improving the accuracy of subsequent correction of the iron core 1.

[0042] like Figure 2-Figure 4As shown, a positioning bar 7 is vertically lifted and connected on the surface of the placement table 3, and there are four positioning bars 7 evenly distributed around the circumference. The positioning bars 7 are in the shape of arc bars and are integrally spliced ​​into a complete circle to form a positioning groove 8 that is adapted to the outer diameter of the iron core 1. In this way, the iron core 1 is placed in the positioning groove 8 to effectively play a role in centering and positioning, and effectively prevent the subsequent rotation of the placement table 3 from causing the position of the iron core 1 to shift.

[0043] like Figure 2 and Figure 3 As shown, a driving column 9 is also vertically slidably connected to the table surface of the placement table 3, and the top end of the driving column 9 protrudes from the table surface of the placement table 3. A reset member is provided inside the placement table 3 to drive the driving column 9 to move up and reset to the end protruding from the table surface. In this embodiment, the reset member adopts a tension spring 10, one end of the tension spring 10 is fixed to the table surface, and the other end is fixed to a protrusion 11 on the side wall of the driving column 9. In addition, a linkage mechanism for transmitting the reverse movement of the two is provided between the driving column 9 and the positioning bar 7, and the linkage mechanism includes a gear 12 and a rack 13. The gear 12 is rotatably connected to the inside of the placement table 3, and the rack 13 is provided with two gears that are respectively meshed with the two ends of the gear 12. On the side, one of the racks 13 is fixed to the driving column 9, and the other rack 13 is fixed to the positioning bar 7. In this way, when the iron core 1 is placed on the surface of the placement table 3, the driving column 9 is moved down and the positioning bar 7 is driven by the gear 12 and the rack 13 to protrude from the surface of the placement table 3 to form a positioning groove 8. When the iron core 1 is not placed, the positioning bar 7 retracts and can keep the surface of the placement table 3 flat, which is convenient for the placement of the iron core 1. The positioning bar 7 is provided with a spring 14 that drives it to retract and reset. One end of the spring 14 is fixed to the positioning bar 7, and the other end is fixed to the bottom wall of the surface of the placement table 3. With the help of the spring 14, the positioning bar 7 can be well reset.

[0044] like Figure 2 and Figure 3As shown, the top wall of the positioning strip 7 on the side close to the iron core 1 has an arc-shaped guide surface 15 formed by an inward concave shape, and the arc-shaped guide surface 15 can play a corresponding guiding and correcting role for the iron core 1 to enter the positioning groove 8. When the iron core 1 is initially placed on the placement table 3 and there is a slight deviation, the driving column 9 can guide the iron core 1 into the positioning groove 8 with the help of the arc-shaped guide surface 15 during the upward movement of the positioning strip 7 to achieve automatic correction and achieve the purpose of accurate centering. The abutment of the arc-shaped guide surface 15 and the iron core 1 is linear contact, and the small friction resistance can achieve a smoother guiding effect. In addition, in the positioning The positioning strip 7 has an outwardly protruding convex portion 16 toward the center of the circle, and the curvature of the surface of the convex portion 16 is continuously connected with the arc-shaped guide surface 15. The convex portion 16 is also in line contact with the outer wall of the core 1, reducing the contact and friction damage to the outer surface of the core 1. The end of the convex portion 16 has a certain deformation ability. In this embodiment, the end of the convex portion 16 is a rubber portion, so that during the rotation of the placement table 3, the end of the convex portion 16 can be stuck in the vertical groove of the outer wall of the core 1 to achieve a certain circumferential linkage, thereby avoiding the phenomenon of circumferential slippage, thereby better realizing the synchronous circumferential rotation of the placement table 3 and the core 1.

[0045] like Figure 2 and Figure 3 As shown, a switch button 17 for controlling the opening and closing of the light source 6 is provided on the inner bottom wall of the placement table 3, and the position of the switch button 17 corresponds to the position directly below the driving column 9, and when the driving column 9 is driven to move downward after the iron core 1 is placed on the table surface of the placement table 3, the bottom end of the driving column 9 is pressed down to trigger the switch button 17 to turn on the light source 6. At this time, fill light is used for image recognition. When the iron core 1 is not placed on the placement table 3, the driving column 9 is moved up without pressing the switch button 17. At this time, the switch button 17 is in a state of controlling the light source 6 to be turned off, thereby achieving the corresponding energy-saving purpose and avoiding the situation where the light source 6 is continuously turned on and causing a waste of electricity.

[0046] like Figure 2 As shown, a lifting rod 18 is vertically lifted on the placement table 3, and the top of the lifting rod 18 passes through the table surface of the placement table 3, and a lifting cylinder 19 for driving the lifting rod 18 to rise and fall is arranged inside the placement table 3. The lifting rod 18 and the lifting cylinder 19 are symmetrically arranged, so that when the iron core 1 completes the identification and correction, the lifting rod 18 can be driven by the lifting cylinder 19 to move up to lift the iron core 1. During this period, the driving column 9 can play an auxiliary lifting role, and only a smaller force is needed to lift the iron core 1. When the driving column 9 moves up, the linkage positioning bar 7 retracts inward so that the outer wall of the iron core 1 is not blocked, thereby making it easier to clamp and carry the iron core 1 later.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stator and rotor core image recognition automatic alignment and shaping process, characterized in that: The method comprises the following steps: S1, loading the iron core (1) to be processed; S2, identification and alignment, the current angle of the iron core (1) is identified by a CCD camera (4), if the current angle of the iron core (1) is correct, the next step is performed, if the current angle of the iron core (1) is incorrect, the angle of the iron core (1) is rotated to correct the alignment; S3, shaping, placing the iron core (1) in a shaping device for shaping; S4, turning over, turning the iron core (1) after the shaping process upside down; S5, marking, marking a mark on the back of the iron core (1); S6, material cutting inspection, performing manual inspection on the iron core (1) after cutting; In step S2, an image recognition device is used, the CCD camera (4) is arranged on the image recognition device, the image recognition device comprises a placement table (3) for placing the iron core (1), a driving source for driving the placement table (3) to rotate is arranged at the bottom, the table top of the placement table (3) is arranged transparent, and a light source (6) is arranged inside the placement table (3); A positioning bar (7) is vertically connected to the surface of the placement table (3), and the positioning bar (7) is arc-shaped and has a plurality of them. The plurality of positioning bars (7) surround a positioning groove (8) adapted to the iron core (1); The surface of the placement table (3) is also vertically connected with a driving column (9), a linkage mechanism for driving the driving column (9) and the positioning bar (7) to move the two in opposite directions is provided between the driving column (9), and a reset member for driving its end to protrude from the surface of the placement table (3) is provided at the top of the driving column (9); The linkage mechanism comprises a gear (12) and a rack (13), wherein the gear (12) is rotatably connected inside the placement platform (3), and the rack (13) is respectively meshed with two sides of the gear (12), wherein one of the racks (13) is fixed to the driving column (9), and the other rack (13) is fixed to the positioning bar (7); The placement platform (3) has a switch button (17) inside for controlling the opening and closing of the light source (6); the switch button (17) is located below the driving column (9); when the iron core (1) is placed on the placement platform (3), the driving column (9) moves downward under the pressure of the iron core (1) and the end thereof presses the switch button (17) to turn on the light source (6); when the iron core (1) is not placed on the placement platform (3), the driving column (9) moves upward under the action of a reset member and resets, and the end thereof is separated from the switch button (17), and the light source (6) is turned off.

2. The stator and rotor core image recognition automatic alignment and shaping process according to claim 1, characterized in that: The inner wall of the positioning strip (7) on one side facing the center of the circle has an outwardly protruding convex portion (16), and the convex portion (16) is used for linear contact with the outer wall of the iron core (1).

3. The stator and rotor core image recognition automatic alignment and shaping process according to claim 2, characterized in that: The end of the protrusion (16) is a rubber portion, and the rubber portion is partially used to be inserted into a vertical groove on the outer wall of the iron core (1).

4. The stator and rotor core image recognition automatic alignment and shaping process according to claim 1, characterized in that: The placing platform (3) is provided with a push rod (18) for driving the iron core (1) to move upward, and the bottom of the push rod (18) is provided with a push cylinder (19) for driving it to move upward.

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