Flat wire motor stator hairpin wire paint removal device and paint removal method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHIXIN TECH CO LTD
- Filing Date
- 2024-11-11
- Publication Date
- 2026-07-21
Smart Images
Figure CN119657569B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of motor manufacturing technology, specifically to a device and method for removing paint from the stator hairpin wire of a flat wire motor. Background Technology
[0002] Flat copper wire is an important component of the new energy hairpin hairpin motor. During the motor manufacturing process, flat copper wire needs to be soldered onto the motor. Before soldering, the insulating varnish layer of the flat copper wire at the soldering point needs to be removed. The varnish layer cleaning needs to be thorough and without residue, so as not to affect the substrate. Otherwise, it will reduce the subsequent soldering quality and cause defects.
[0003] Hairpin wire coating removal is a crucial process in wire forming. Currently, there are two commonly used coating removal processes for hairpin wire: mechanical and mechanical. Mechanical coating removal, such as the device for removing the insulating varnish layer from enameled flat wire, includes a cutting mechanism for cutting the insulating varnish layer. The cutting mechanism includes blades that move towards or away from the enameled flat wire, with a gap in the middle. The blades include: guide parts symmetrically distributed on both sides of the gap, used to confine the enameled flat wire within the gap between the two guide parts; and cutting parts symmetrically distributed on both sides of the gap, with the cutting part protruding from the guide part on the side facing the gap, used to cut the enameled flat wire located in the gap. The guide part protrudes from the cutting part on the side facing the enameled flat wire, and has a rounded or chamfered corner at its end for guiding the enameled flat wire into the gap. This solution, by constructing a dedicated coating removal device, can ensure the positional accuracy of the copper wire during coating removal, thus achieving rapid and high-precision varnish removal. However, mechanical coating removal also has some problems. Due to blade wear and minor fluctuations in the mechanical structure, the coating removal effect is prone to instability during mechanical coating removal, and it can also cause some damage to the copper substrate.
[0004] Another method is laser paint removal. For example, existing technology, such as a multi-head laser cleaning device, includes multiple laser cleaning heads for laser processing of the product's surfaces; a product channel for the product to pass through, and the product having multiple processing surfaces distributed circumferentially around itself; each of the laser cleaning heads is arranged circumferentially around the product channel, wherein at least two of the laser cleaning heads are arranged opposite each other, and the processing areas of the two oppositely arranged laser cleaning heads have a certain angle between them; a flat wire motor processing production line is also provided, including the above-mentioned cleaning device; a multi-head laser cleaning method is also provided, using multiple laser cleaning heads to simultaneously process the outer surface of the wire. This device, by simultaneously processing multiple processing surfaces circumferentially around the product with multiple laser cleaning heads, is suitable for wire paint removal and can effectively avoid laser beams between the laser cleaning heads.
[0005] Compared to mechanical paint removal, although laser paint removal requires a higher initial investment, its subsequent equipment maintenance, debugging, and compatibility are superior, leading to a growing number of companies choosing laser paint removal. Currently, commonly used laser paint removal technologies fall into two categories: 1. Carbon dioxide laser paint removal combined with fiber laser paint removal. This technology can achieve a cycle time as fast as 0.8 seconds, but requires two laser systems to perform the paint removal function (i.e., the multi-head laser cleaning device mentioned above), and the carbon dioxide lasers used for paint removal must all use imported light sources, resulting in higher costs; 2. Fiber laser paint removal. This technology can achieve a cycle time as fast as 1.5 seconds with conventional configurations, but the paint removal cycle time has reached a bottleneck due to the limitation of the galvanometer scanning speed. With the increasing number of layers in the hairpin stator windings of flat wire motors and the exponential increase in the number of hairpin wires, a more efficient laser paint removal method is urgently needed to meet the cycle time requirements of mass production of multi-layer flat wire motor stators. Summary of the Invention
[0006] The purpose of this application is to address the shortcomings of the aforementioned background technology and to provide a device and method for removing paint from the stator hairpin wire of a flat wire motor.
[0007] The technical solution of this application is: a device for removing paint from the stator hairpin wire of a flat wire motor, comprising,
[0008] A laser for emitting a laser beam;
[0009] A conductive optical fiber, one end of which is connected to a laser to conduct the laser beam;
[0010] An optical isolator output head, located at the other end of a conductive optical fiber, is connected to guide a laser beam.
[0011] A beam expander is positioned in the optical path of the laser beam output from the output head of the optical isolator to expand the laser beam.
[0012] A scanning range adjustment structure is located on the optical path of the laser beam exported by the beam expander and is used to adjust the scanning range of the laser beam.
[0013] A scanning speed adjustment structure is used to adjust the scanning speed of a laser beam in a certain direction;
[0014] A focusing lens is positioned in the optical path of the laser beam reflected by the scanning speed adjustment structure, and is used to focus the laser beam onto the hairpin line to be coated.
[0015] A dust-collecting structure is positioned between the focusing lens and the hairpin wire to be removed, used to extract dust and fumes generated during the paint removal process.
[0016] According to the present application, a device for removing paint from the stator hairpin wire of a flat wire motor is provided. The scanning speed adjustment structure includes a multifaceted prism. The multifaceted prism is located in the optical path of a laser beam reflected by the scanning range adjustment structure. The multifaceted prism is rotatable around the X-axis and its outer side has multiple reflective cylindrical structures. The multifaceted prism is used to adjust the scanning speed of the laser beam in the Y-axis. The Y-axis is the direction of hairpin wire travel. The X-axis is a horizontal direction perpendicular to the Y-axis.
[0017] According to the present application, a flat wire motor stator hairpin wire paint removal device is provided, wherein the number of reflective surfaces of the multifaceted prism is 6 to 30, and the rotation speed of the multifaceted prism around the X-axis is 100 rpm to 20000 rpm.
[0018] According to the present application, a device for removing paint from the stator hairpin wire of a flat wire motor includes a scanning range adjustment structure comprising:
[0019] X-axis scanning lens, which is located in the optical path of the laser beam exported by the beam expander. The X-axis scanning lens is a reflective mirror that can be deflected around the Y-axis to adjust the X-axis scanning range of the laser beam.
[0020] The Y-axis scanning lens is located in the optical path of the laser beam reflected by the X-axis scanning lens. The Y-axis scanning lens is a reflective mirror that can be deflected around the X-axis to adjust the Y-axis scanning range of the laser beam.
[0021] According to the present application, a flat wire motor stator hairpin wire paint removal device is provided, wherein the scanning angle range of the X-axis scanning lens is -16° to +16°.
[0022] According to the present application, a flat wire motor stator hairpin wire paint removal device is provided, wherein the scanning angle range of the Y-axis scanning lens is -12.5° to +12.5°.
[0023] This application also provides a method for removing the varnish from the stator hairpin wire of a flat wire motor. The method employs any of the aforementioned flat wire motor stator hairpin wire varnish removal devices, and includes the following steps:
[0024] A laser beam is generated by a laser, and the laser beam passes sequentially through a transmission fiber, an optical isolator output head, a beam expander, a scanning range adjustment structure, a scanning speed adjustment structure, and a focusing lens before being focused onto the hairpin line to be coated.
[0025] The scanning trajectory and scanning speed of the laser beam focal point are adjusted based on the scanning range adjustment structure and the scanning speed adjustment structure, thereby setting the paint removal range for the hair clip line.
[0026] According to the method for removing paint from the stator hairpin wire of a flat wire motor provided in this application, the method for adjusting the scanning trajectory of the laser beam focal point based on the scanning range adjustment structure includes: adjusting the laser beam focal point to move linearly along the Y direction based on the Y-axis scanning lens in the scanning range adjustment structure; after completing one Y-axis linear movement trajectory, adjusting the laser beam focal point to move along the X direction to the starting point of the next Y-axis linear movement trajectory using the X-axis scanning lens in the scanning range adjustment structure, and starting to scan the next Y-axis linear movement trajectory, and so on, until all scanning range movements are completed.
[0027] According to the method for removing paint from the stator hairpin wire of a flat wire motor provided in this application, the scanning range includes an intermediate region in the middle of the Y direction and a transition region on both sides of the intermediate region in the Y direction; based on the scanning range adjustment structure, only the intermediate region is scanned first, and after the scanning of the intermediate region is completed, the combined region including the transition region and the intermediate region is scanned.
[0028] According to the method for removing paint from the stator hairpin wire of a flat wire motor provided in this application, the width of the transition area along the Y direction is 0mm to 3mm.
[0029] The advantages of this application are: 1. The paint removal device of this application uses a scanning speed adjustment structure to adjust the scanning speed of the laser beam, which can greatly increase the scanning speed of the laser beam, greatly reduce the paint removal cycle of the hair clip, greatly improve the paint removal efficiency, and greatly facilitate the paint removal operation of the hair clip.
[0030] 2. This application uses a rotatable multifaceted prism to adjust the scanning speed of the laser beam, which can greatly improve the scanning speed of the laser beam. Its structure is simple, easy to use, and extremely easy to control.
[0031] 3. The multifaceted prism of this application can geometrically increase the paint removal scanning speed through 6 to 30 reflective mirrors and a rotation speed of 100 rpm to 20,000 rpm, thereby greatly improving production efficiency.
[0032] 4. The scanning range adjustment structure of this application includes an X-axis scanning lens and a Y-axis scanning lens. Its structure is simple and it is extremely convenient to adjust the X-axis range and Y-axis range. It can effectively control the trajectory of the laser beam and improve the paint removal effect of the hairpin thread.
[0033] 5. This application limits the scanning angle range of the X-axis scanning lens and the Y-axis scanning lens to ensure that the moving trajectory of the laser beam focal point can fully cover the area to be painted on the hairpin line, and can fully remove the paint from the hairpin line;
[0034] 6. This application also provides a method for removing paint. The method of removing paint in this application is simple, has extremely high efficiency in removing paint, and has excellent paint removal effect.
[0035] 7. This application uses a linear movement along the Y-axis to perform the paint removal operation. Combined with the scanning speed adjustment structure, the scanning speed in the Y-axis can be adjusted, which can greatly improve the efficiency of laser paint removal and make the entire paint removal process simpler.
[0036] 8. This application sets transition areas on both sides of the paint removal area in the Y direction. The reserved transition area can avoid the problem of carbonization at the paint removal edge. The number of paint removals in the transition area is less than that in the middle area. The transition area connects the area where the insulating varnish layer is retained and the middle area, which greatly improves the paint removal effect and the paint removal quality.
[0037] 9. This application sets the width range of the transition area, allowing for appropriate selection based on different paint removal requirements, which can effectively ensure the quality and effect of paint removal.
[0038] The paint removal device of this application has a simple structure and is easy to operate. It can significantly improve the efficiency of paint removal from the stator hairpin wire of flat wire motor, and improve the quality and effect of paint removal. It has great promotional value. Attached Figure Description
[0039] Figure 1 : A schematic diagram of the paint removal device of this application;
[0040] Figure 2 : A schematic diagram of the middle and transition areas of the card issuance line in this application (top view);
[0041] Figure 3 : A schematic diagram of the movement trajectory of the laser beam focusing point in the middle area of the card issuing line in this application (top view);
[0042] Figure 4 This application presents a schematic diagram of the laser beam focusing point movement trajectory in the middle and transition areas of the card issuing line (top view).
[0043] Wherein: 1—Laser; 2—Guiding fiber; 3—Optical isolator output head; 4—Beam expander; 5—X-axis scanning lens; 6—Y-axis scanning lens; 7—Multifaceted prism; 8—Focusing lens; 9—Dust collection structure; 10—Hairpin wire. Detailed Implementation
[0044] The embodiments of this application are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0045] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0047] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0048] This application relates to a device for removing the varnish from the stator hairpin wire of a flat wire motor. The device integrates a scanning range adjustment structure and a scanning speed adjustment structure. The scanning range adjustment structure adjusts the scanning range of the laser beam to ensure precise operation on the area of the hairpin wire to be varnished. The scanning speed adjustment structure adjusts the scanning speed of the laser beam in a specific direction, significantly increasing the scanning speed and thus improving the varnish removal efficiency. This device has a simple structure, is easy to operate, and can significantly improve the efficiency, quality, and effect of varnish removal from the stator hairpin wire of a flat wire motor.
[0049] Specifically, such as Figure 1As shown, a device for removing paint from the stator hairpin wire of a flat wire motor includes a laser 1, a conductive fiber 2, an optical isolator output head 3, a beam expander 4, a scanning range adjustment structure, a scanning speed adjustment structure, a focusing lens 8, and a dust collection structure 9. The laser 1 is used to emit a laser beam. The laser 1 is a pulsed laser with a laser emission power of 1000W. The laser 1 can also be a continuous fiber laser, and the power is not limited to the power mentioned above. One end of the conductive fiber 2 is connected to the laser 1 to conduct the laser beam. The optical isolator output head 3 is located at the other end of the conductive fiber 2 and is connected to guide the laser beam. The beam expander 4 is located in the optical path through which the laser beam is guided by the optical isolator output head 3. The beam expander 4 is used to expand the laser beam by 1.5 times. The scanning range adjustment structure is located on the optical path of the laser beam output by the beam expander 4 to adjust the scanning range of the laser beam. The scanning speed adjustment structure is used to adjust the scanning speed of the laser beam in a certain direction. The focusing lens 8 is located on the optical path of the laser beam reflected by the scanning speed adjustment structure and is used to focus the laser beam onto the hairpin line 10 to be painted. The focal length of the focusing lens 8 is 254mm. The dust suction structure 9 is located between the focusing lens 8 and the hairpin line 10 to be painted and is used to suck up the dust and smoke generated during the paint removal process. The dust suction structure 9 is a suction structure with a fan and a wind speed of 30m / s.
[0050] In actual operation, a laser beam is generated by laser 1. The laser beam passes sequentially through the transmission fiber 2, the output head of the optical isolator 3, the beam expander 4, the scanning range adjustment structure, the scanning speed adjustment structure, and the focusing lens 8 before being focused onto the hairpin 10 to be painted. The scanning trajectory and scanning speed of the laser beam focal point are adjusted based on the scanning range adjustment structure and the scanning speed adjustment structure, thereby setting the paint removal range for the hairpin 10. During the paint removal process, the dust and fumes generated are sucked up by the dust suction structure 9.
[0051] In some embodiments of this application, the scanning speed adjustment structure described above has been optimized, specifically, as follows: Figure 1 As shown, the scanning speed adjustment structure includes a multifaceted prism 7, which is located in the optical path of the laser beam reflected by the scanning range adjustment structure. The multifaceted prism 7 is rotatable around the X-axis and has multiple reflective cylindrical structures on its outer side. The multifaceted prism 7 is used to adjust the scanning speed of the laser beam in the Y-axis, where the Y-axis is the direction of hairpin line travel; the X-axis is a horizontal direction perpendicular to the Y-axis.
[0052] The multifaceted prism 7 has multiple reflecting mirrors. As it rotates around the X-axis, its outer reflecting mirrors continuously reflect the laser beam emitted from the scanning range adjustment structure. The laser beam reflected from the scanning range adjustment structure is emitted along the Y-axis. During the rotation of the multifaceted prism 7, the reflecting mirrors remain parallel to the X-axis, while the angle between the reflecting mirrors and the Y-axis constantly changes. Under the influence of the reflecting mirrors, the focal point of the laser beam reflected onto the hairpin line continuously changes along the Y-axis. The speed at which the focal point moves along the Y-axis on the hairpin line is positively correlated with the rotational speed of the multifaceted prism 7. The faster the multifaceted prism 7 rotates, the faster the focal point moves along the hairpin line, i.e., the faster the scanning speed. Therefore, in practical applications, the scanning speed can be adjusted by changing the rotational speed of the multifaceted prism 7.
[0053] In this embodiment, the number of reflective mirrors of the multifaceted prism 7 is 6 to 30, and the rotation speed of the multifaceted prism 7 around the X-axis is 100 rpm to 20,000 rpm, corresponding to a line scan speed of 10 m / s to 200 m / s. In practical applications, a multifaceted prism 7 with a suitable structure and a suitable rotation speed can be selected according to actual needs.
[0054] In other embodiments of this application, the scanning range adjustment structure described above has been optimized, specifically, as follows: Figure 1 As shown, the scanning range adjustment structure includes an X-axis scanning lens 5 and a Y-axis scanning lens 6. The X-axis scanning lens 5 is located in the optical path of the laser beam emanating from the beam expander 4. The X-axis scanning lens 5 is a reflective mirror that can deflect around the Y-axis to adjust the X-axis scanning range of the laser beam. The scanning angle range of the X-axis scanning lens 5 is -16° to +16°. The Y-axis scanning lens 6 is located in the optical path of the laser beam reflected by the X-axis scanning lens 5. The Y-axis scanning lens 6 is a reflective mirror that can deflect around the X-axis to adjust the Y-axis scanning range of the laser beam. The scanning angle range of the Y-axis scanning lens 6 is -12.5° to +12.5°.
[0055] The laser beam is emitted from the beam expander 4 and enters the X-axis scanning lens 5. The X-axis scanning lens 5 reflects the laser beam to the Y-axis scanning lens 6, and the Y-axis scanning lens 6 reflects the laser beam and transmits it to the multifaceted prism 7.
[0056] This application also optimizes the specific paint removal method. The method described above for adjusting the scanning trajectory of the laser beam focal point based on the scanning range adjustment structure is as follows: the laser beam focal point is adjusted to move linearly along the Y direction based on the Y-axis scanning lens 6 in the scanning range adjustment structure. After completing one Y-axis linear movement trajectory, the laser beam focal point is adjusted to move along the X direction to the starting point of the next Y-axis linear movement trajectory using the X-axis scanning lens 5 in the scanning range adjustment structure, and the scanning of the next Y-axis linear movement trajectory begins. This process is repeated until all scanning range movements are completed.
[0057] like Figures 2-4 As shown, the area between the shaded regions is the paint removal area for the hair clip. The focal point of the laser beam moves in a straight line within the paint removal area until it has completely traversed all the paint removal areas. In this embodiment, the focal point moves in a straight line. The starting point of the first Y-axis straight-line movement trajectory is the Y-end of the X-axis side of the paint removal area. Then, it moves along the Y-axis towards the other Y-end of the X-axis side of the paint removal area. When the focal point moves to the Y-end of the X-axis side of the paint removal area, the first Y-axis straight-line movement trajectory is completed. Then, under the adjustment of the X-axis scanning lens 5, the focal point moves along the X-axis to the starting point of the second Y-axis straight-line movement trajectory. The starting point of the second Y-axis straight-line movement trajectory is adjacent to the ending point of the first Y-axis straight-line movement trajectory. Then, the focal point moves along the Y-axis towards the ending point of the second Y-axis straight-line movement trajectory until the second Y-axis straight-line movement trajectory is completed. This process is repeated until all the paint removal areas are completely traversed.
[0058] In this embodiment, the movement of the focal point is a zigzag reciprocating movement, and the spacing between adjacent Y-axis linear movement trajectories is 0.002mm to 0.2mm (e.g., Figures 3-4 As shown in the diagram (W), the requirement is that the edges of adjacent Y-axis linear movement trajectories must overlap or just touch to ensure that the insulating varnish layer on the varnish removal area can be completely removed. The focal point of the laser beam is a circular spot with a certain width. As the focal point moves along the Y-axis, it will form a wide ablation line on the varnish removal area, which is the Y-axis linear movement trajectory mentioned above.
[0059] Furthermore, this embodiment further limits the movement of the laser beam focal point. This embodiment defines the scanning range (i.e., the paint removal area mentioned above, such as...) Figure 1 As shown in Figure C), the region is divided into the middle area in the Y direction (e.g., Figure 2 Part A shown) and the transition areas on both sides of the middle region Y (such as Figure 2 (As shown in part B), that is, the paint removal area C = A + 2B. Based on the scanning range adjustment structure, only the middle area is scanned first. After the middle area is scanned, the combined area containing the transition area and the middle area is scanned.
[0060] Assume the Y-axis width of the intermediate region is M, the Y-axis width of the transition region is L, and the Y-axis width of the entire scanning range is M+2L. In actual operation, the intermediate region is scanned first. The focal point of the laser beam starts at the Y-axis end of the intermediate region's X-axis side as the starting point of the first intermediate region straight line trajectory. Then, it moves along the Y-axis towards the other Y-axis end of the intermediate region's X-axis side, with the latter being the ending point of the first intermediate region straight line trajectory. The length of the first intermediate region straight line trajectory is M. After completing the movement of the first intermediate region straight line trajectory, under the action of the X-axis scanning lens 5, it moves along the X-axis to the starting point of the second intermediate region straight line trajectory. The ending point of the first and second intermediate region straight line trajectories are adjacent and on the same Y-axis side. Then, it moves along the Y-axis towards the ending point of the second intermediate region straight line trajectory until the movement of the second intermediate region straight line trajectory is completed. This process is repeated until the first scan of the intermediate region is complete. A second or third scan can be performed based on the removal status of the insulating varnish layer in the intermediate region, and so on, until the scanning of the insulating varnish layer in the intermediate region meets the set requirements.
[0061] Then, a superimposed scan of the transition and intermediate regions is performed, i.e., a complete scan of the paint removal area. The focal point of the laser beam starts from one end of the X-axis of the paint removal area in the Y-axis direction (i.e., the end of the transition area on one side away from the intermediate region in the X-axis direction), which serves as the starting point of the first combined region straight line trajectory. Then, it moves along the Y-axis towards the other end of the X-axis of the paint removal area in the Y-axis direction (i.e., the end of the transition area on the other side in the X-axis direction away from the intermediate region in the X-axis direction). The other end of the X-axis of the paint removal area in the Y-axis direction is the ending point of the first combined region straight line trajectory. The length of the first combined region straight line trajectory is M+2L, thus completing the first combined region straight line. After the trajectory is moved, under the action of the X-axis scanning lens 5, it moves along the X-direction to the starting point of the second combined area straight trajectory. The ending point of the first combined area straight trajectory and the starting point of the second combined area straight trajectory are adjacent to each other on the same side of the Y-direction. Then it moves along the Y-direction towards the ending point of the second combined area straight trajectory until the movement of the second combined area straight trajectory is completed. This process is repeated until the first scan of the paint removal area is completed. A second scan or a third scan can be performed based on the removal status of the insulating varnish layer in the paint removal area, until the scan of the insulating varnish layer in the paint removal area meets the set requirements.
[0062] When scanning the paint stripping area, not only the transition area is scanned, but the intermediate area is also scanned again. In other words, as long as the transition area exists, the number of scans for the intermediate area is greater than the number of scans for the transition area. The final result is that the paint layer ablation in the transition area is different from that in the intermediate area.
[0063] In practice, the intermediate area can be scanned first, followed by the paint removal area. This process can be repeated, alternating between the two areas, until the desired paint removal effect is achieved. Alternatively, the intermediate area can be scanned multiple times, followed by the paint removal area, again until the desired effect is achieved. The appropriate procedure can be selected based on the specific circumstances.
[0064] Generally, the width of the transition region along the Y direction is 0mm to 3mm. When the width of the transition region is 0mm, there is no transition region.
[0065] like Figure 1 As shown, the Y-direction of this application Figure 1 The left and right directions in this application, the X direction refers to... Figure 1 In the direction perpendicular to the paper, the moving direction of the stator hairpin wire of the flat wire motor in this application is Y-axis.
[0066] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.
Claims
1. A method for removing paint from the stator hairpin wire of a flat wire motor, characterized in that: The method employs a flat wire motor stator hairpin wire paint removal device, which includes... Laser (1), said laser (1) is used to emit a laser beam; A conductive fiber (2) is provided, one end of which is connected to a laser (1) for transmitting a laser beam. Optical isolator output head (3), which is located at the other end of the conductive fiber (2) and connected to export the laser beam; Beam expander (4), the beam expander (4) is located on the optical path of the laser beam output head (3) of the optical isolator and is used to expand the laser beam; A scanning range adjustment structure is located on the optical path of the laser beam exported by the beam expander (4) to adjust the scanning range of the laser beam; A scanning speed adjustment structure is used to adjust the scanning speed of a laser beam in a certain direction; A focusing lens (8) is located in the optical path of the laser beam reflected by the scanning speed adjustment structure, and is used to focus the laser beam onto the hairpin line to be painted. A dust-collecting structure (9) is located between the focusing lens (8) and the hairpin wire to be removed, and is used to suck up the dust and smoke generated during the paint removal process. The method includes: A laser beam is generated by a laser (1). The laser beam passes through a transmission fiber (2), an optical isolator output head (3), a beam expander (4), a scanning range adjustment structure, a scanning speed adjustment structure, and a focusing lens (8) in sequence and is then focused onto the hair clip line to be painted. The scanning trajectory and scanning speed of the laser beam focal point are adjusted based on the scanning range adjustment structure and the scanning speed adjustment structure, thereby setting the paint removal range for hair clip lines and removing the paint. The method for adjusting the scanning trajectory of the laser beam focal point based on the scanning range adjustment structure includes: adjusting the laser beam focal point to move linearly along the Y direction based on the Y-axis scanning lens (6) in the scanning range adjustment structure; after completing one Y-axis linear movement trajectory, adjusting the laser beam focal point to move along the X direction to the starting point of the next Y-axis linear movement trajectory using the X-axis scanning lens (5) in the scanning range adjustment structure, and starting to scan the next Y-axis linear movement trajectory, and so on, until all scanning ranges are moved; the scanning range includes the middle region in the middle of the Y direction and the transition region on both sides of the middle region in the Y direction; based on the scanning range adjustment structure, only the middle region is scanned first, and after the middle region is scanned, the combined region containing the transition region and the middle region is scanned.
2. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 1, characterized in that: The scanning speed adjustment structure includes a multifaceted prism (7); the multifaceted prism (7) is located in the optical path of the laser beam reflected by the scanning range adjustment structure. The multifaceted prism (7) is a columnar structure with multiple reflective surfaces on its outer side that can rotate around the X-axis. The multifaceted prism (7) is used to adjust the scanning speed of the laser beam in the Y-axis; the Y-axis is the direction of hairpin line travel; the X-axis is a horizontal direction perpendicular to the Y-axis.
3. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 2, characterized in that: The number of reflective mirrors of the multifaceted prism (7) is 6 to 30, and the rotation speed of the multifaceted prism (7) around the X-axis is 100 rpm to 20000 rpm.
4. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 1, characterized in that: The scanning range adjustment structure includes, X-axis scanning lens (5), the X-axis scanning lens (5) is located in the optical path of the laser beam exported by the beam expander (4), and the X-axis scanning lens (5) is a reflective mirror that can be deflected around the Y-axis to adjust the X-axis scanning range of the laser beam; Y-axis scanning lens (6), the Y-axis scanning lens (6) is located in the optical path of the laser beam reflected by the X-axis scanning lens (5), and the Y-axis scanning lens (6) is a reflective mirror that can be deflected around the X-axis to adjust the Y-axis scanning range of the laser beam.
5. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 4, characterized in that: The scanning angle range of the X-axis scanning lens (5) is -16° to +16°.
6. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 4, characterized in that: The scanning angle range of the Y-axis scanning lens (6) is -12.5° to +12.5°.
7. The method for removing paint from the stator hairpin wire of a flat wire motor as described in claim 1, characterized in that: The width of the transition region along the Y direction is 0mm to 3mm.