Paint removing device and paint removing method for hairpin wire of stator of flat wire motor

Abstract

The invention relates to the technical field of motor production, in particular to a flat wire motor stator hairpin wire paint removing device and a paint removing method. Comprising a laser, a conduction optical fiber, an optical isolator output head, a beam expander, a scanning range adjusting structure, a scanning speed adjusting structure, a focusing lens and a dust collection structure. The laser is used for emitting laser beams; one end of the conductive fiber is connected with the laser; the output head of the optical isolator is connected with the other end of the conduction optical fiber; the scanning range adjusting structure is located on a light path of the laser beam led out by the optical isolator output head; the scanning speed adjusting structure is used for adjusting the scanning speed of the laser beam in a certain direction; the focusing lens is located on a light path of the laser beam reflected by the scanning speed adjusting structure; the dust collection structure is located between the focusing lens and the hairpin line to be depainted. The paint removing device is simple in structure and convenient to operate, the paint removing efficiency of the hairpin wire of the stator of the flat wire motor can be greatly improved, and the paint removing quality and effect are improved.

Description

Technical Field

[0001] The invention relates to the technical field of motor production, and in particular to a paint removal device and a paint removal method for a stator hairpin wire of a flat wire motor. Background Art

[0002] Flat copper wire is an important component of the new energy Hair-pin hairpin motor. During the production process of the motor, the flat copper wire needs to be welded to the motor. Before welding, the insulating paint layer of the flat copper wire at the welding part needs to be removed. The paint layer cleaning needs to be done without residue and without affecting the substrate, otherwise it will reduce the subsequent welding quality and cause defects.

[0003] The paint removal of hairpin wire is a key process of wire forming. There are two commonly used paint removal processes for hairpin wires. One is mechanical paint removal, such as a device for removing the insulating paint layer of enameled flat wire, which includes a cutting mechanism for cutting off the insulating paint layer. The cutting mechanism includes a tool that moves toward or away from the enameled flat wire, and there is a gap in the middle of the tool. The tool includes: a guide part, which is symmetrically distributed on both sides of the gap and is used to limit the enameled flat wire in the gap between the two guide parts; a cutting part, which is symmetrically distributed on both sides of the gap, and the cutting part is protruding from the guide part facing one side of the gap, and the protruding cutting part is used to punch the enameled flat wire located in the gap; wherein the guide part is protruding from the cutting part facing one side of the enameled flat wire, and a fillet or cut corner is provided at the end of the guide part for guiding the enameled flat wire into the gap. The above scheme can ensure the position accuracy of the copper wire during paint removal by constructing a special paint removal device, thereby performing fast and high-precision paint removal. However, there are also some problems with mechanical paint removal. The mechanical paint removal process is prone to unstable paint removal effect due to tool wear and slight fluctuations in the mechanical structure when removing the paint, and causes certain damage to the copper substrate.

[0004] Another is laser paint removal, such as the prior art called a multi-head laser cleaning device, which includes multiple laser cleaning heads for laser processing the processed surface of the product; a product channel for the product to pass through, and the product has multiple processed surfaces distributed 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 to each other, and there is a certain angle between the processing widths of the two oppositely arranged laser cleaning heads; 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, which uses multiple laser cleaning heads to simultaneously process the outer surface of the wire. The device uses multiple laser cleaning heads to simultaneously process multiple processed surfaces of the product circumferentially, is suitable for wire paint removal, and can effectively avoid cross-fire between laser cleaning heads.

[0005] Compared with mechanical paint removal, although the one-time investment of laser paint removal is higher, the maintenance, debugging and compatibility of the later equipment are better than mechanical paint removal, so more and more companies choose laser paint removal. Currently, there are two commonly used laser paint removal technology routes: 1. Carbon dioxide laser paint removal plus fiber laser paint removal. The fastest cycle of this technology route can reach 0.8s, but two sets of laser systems are required to realize the paint removal function (i.e., a multi-head laser cleaning device described above), and the carbon dioxide lasers used for paint removal must all use imported light sources, which are relatively expensive; 2. Fiber laser paint removal. The cycle of this technology route can reach 1.5s at the fastest according to the conventional configuration, but due to the limitation of the galvanometer scanning speed, the paint removal cycle has reached a bottleneck. As the number of layers of the flat wire motor hairpin stator winding continues to increase, the number of hairpin wires has doubled, so there is an urgent need for a more efficient laser paint removal method to meet the mass production cycle requirements of multi-layer flat wire motor stators. Summary of the invention

[0006] The purpose of the present application is to solve the deficiencies of the above-mentioned 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 the present application is: a device for removing paint from a stator hairpin wire of a flat wire motor, comprising:

[0008] A laser, wherein the laser is used to emit a laser beam;

[0009] A transmission optical fiber, one end of which is connected to a laser for transmitting a laser beam;

[0010] An optical isolator output head, which is located at the other end of the transmission optical fiber and is connected to output the laser beam;

[0011] A beam expander, which is located on the optical path of the laser beam output from the optical isolator output head and is used to expand the laser beam;

[0012] A scanning range adjustment structure, wherein the scanning range adjustment structure is located on the optical path of the laser beam derived from the beam expander and is used to adjust the scanning range of the laser beam;

[0013] A scanning speed adjustment structure, wherein the scanning speed adjustment structure is used to adjust the scanning speed of the laser beam in a certain direction;

[0014] A focusing lens, which 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 to be depainted;

[0015] A dust suction structure is provided between the focusing lens and the hairpin line to be depainted and is used for sucking dust and smoke generated by depainting.

[0016] According to a flat wire motor stator hairpin wire paint removal device provided by the present application, the scanning speed adjustment structure includes a multi-faceted prism; the multi-faceted prism is located in the optical path of the laser light beam reflected by the scanning range adjustment structure, the multi-faceted prism is rotatable around the X-axis and its outer side is a plurality of reflective mirror columnar structures, the multi-faceted prism is used to adjust the scanning speed of the laser light beam in the Y direction; the Y direction is the travel direction of the hairpin wire; the X direction is the horizontal direction perpendicular to the Y direction.

[0017] According to a flat wire motor stator hairpin wire paint removal device provided by the present application, the number of reflective mirror surfaces of the multi-faceted prism is 6 to 30, and the rotation speed of the multi-faceted prism around the X-axis is 100 rpm to 20,000 rpm.

[0018] According to a flat wire motor stator hairpin wire paint removal device provided in the present application, the scanning range adjustment structure includes:

[0019] An X-axis scanning mirror, wherein the X-axis scanning mirror is located on the optical path of the laser beam derived from the beam expander, and the X-axis scanning mirror is a reflective mirror that can be deflected around the Y-axis to adjust the X-direction scanning range of the laser beam;

[0020] The Y-axis scanning mirror is located on the optical path of the laser beam reflected by the X-axis scanning mirror. The Y-axis scanning mirror 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 a flat wire motor stator hairpin wire paint removal device provided by the present application, the scanning angle range of the X-axis scanning lens is -16° to +16°.

[0022] According to a flat wire motor stator hairpin wire paint removal device provided by the present application, the scanning angle range of the Y-axis scanning lens is -12.5° to +12.5°.

[0023] The present application also provides a method for removing paint from a stator hairpin wire of a flat wire motor, wherein the method adopts any of the above-mentioned devices for removing paint from a stator hairpin wire of a flat wire motor to remove paint, and comprises:

[0024] A laser beam is generated by a laser, and the laser beam is sequentially focused onto the card hairline to be depainted after passing through a transmission optical fiber, an optical isolator output head, a beam expander, a scanning range adjustment structure, a scanning speed adjustment structure and a focusing lens;

[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, so as to set the paint removal range of the hairpin line for paint removal.

[0026] According to a method for removing paint from a stator hairpin wire of a flat wire motor provided by the present application, the method for adjusting the scanning trajectory of a laser beam focal point based on a scanning range adjustment structure includes: adjusting the laser beam focal point to move in a straight line along the Y direction based on a Y-axis scanning lens in the scanning range adjustment structure, and after completing a Y-direction straight line movement trajectory, using an X-axis scanning lens in the scanning range adjustment structure to adjust the laser beam focal point to move in the X direction to the starting point of the next Y-direction straight line movement trajectory, starting to scan the next Y-direction straight line movement trajectory, and performing the process in sequence until all scanning range movements are completed.

[0027] According to a method for removing paint from a stator hairpin wire of a flat wire motor provided in the present application, the scanning range includes a middle area in the middle of the Y direction and transition areas on both sides of the middle area in the Y direction; based on the scanning range adjustment structure, only the middle area is scanned first, and after the scanning of the middle area is completed, the combined area including the transition area and the middle area is scanned.

[0028] According to a method for removing paint from a flat wire motor stator hairpin wire provided in the present application, the width of the transition area along the Y direction is 0 mm to 3 mm.

[0029] The advantages of the present application are as follows: 1. The paint removal device of the present 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 hairpin line, greatly improve the paint removal efficiency, and greatly facilitate the paint removal operation of the hairpin line;

[0030] 2. The present application adopts a rotatable multi-faceted prism to adjust the scanning speed of the laser beam, which can greatly increase the scanning speed of the laser beam. It has a simple structure, is easy to use, and is extremely easy to control and operate;

[0031] 3. The multi-faceted prism of the present application can increase the paint removal scanning speed geometrically through 6 to 30 reflective mirrors and a rotation speed of 100 rpm to 20,000 rpm, greatly improving production efficiency;

[0032] 4. The scanning range adjustment structure of the present application includes an X-axis scanning lens and a Y-axis scanning lens, which has a simple structure and is extremely convenient for adjusting the X-axis range and the Y-axis range, and can effectively control the trajectory of the laser beam, thereby improving the paint removal effect of the hairpin line;

[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 depainted on the hairpin line, and can fully perform the depainting operation on the hairpin line;

[0034] 6. The present application also provides a paint removal method, which is simple, has a high paint removal efficiency, and has an excellent paint removal effect;

[0035] 7. The present application adopts the method of moving along the Y-direction straight line trajectory to perform the paint removal operation, and cooperates with the scanning speed adjustment structure to adjust the Y-direction scanning speed, which can greatly improve the efficiency of laser paint removal and make the entire paint removal process simpler;

[0036] 8. The present application sets transition areas on both sides of the Y direction of the paint removal area. The reserved transition areas can avoid the problem of carbonization of the paint removal edge. The number of paint removal times in the transition area is less than that in the middle area. The transition area connects the insulating paint layer retention area and the middle area, which greatly improves the paint removal effect and paint removal quality.

[0037] 9. This application sets a width range for the transition area, and makes corresponding selections based on different paint removal requirements, which can effectively ensure the quality and effect of paint removal.

[0038] The paint removal device of the present application has a simple structure and is easy to operate. It can greatly improve the efficiency of paint removal of the stator hairpin wire of a flat wire motor, improve the quality and effect of paint removal, and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 : A schematic diagram of the structure of the paint removal device of the present application;

[0040] Figure 2 : Schematic diagram of the middle area and transition area on the card issuing line of the present application (viewed from top);

[0041] Figure 3 : Schematic diagram of the movement trajectory of the laser beam focus point in the middle area of ​​the card issuance line of the present application (viewed from top);

[0042] Figure 4 : Schematic diagram of the movement trajectory of the laser beam focus point in the middle area and transition area of ​​the card issuance line of the present application (viewed from top);

[0043] Among them: 1—laser; 2—transmission optical fiber; 3—optical isolator output head; 4—beam expander; 5—X-axis scanning lens; 6—Y-axis scanning lens; 7—polygonal prism; 8—focusing lens; 9—dust suction structure; 10—hairpin wire. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0045] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] The present application relates to a paint removal device for a flat wire motor stator hairpin wire. The paint removal device of the present application is used to remove the insulating paint layer on the flat wire motor stator hairpin wire. The paint removal device of the present application integrates a scanning range adjustment structure and a scanning speed adjustment structure. The scanning range adjustment structure is used to adjust the scanning range of the laser beam to ensure that the laser beam can accurately operate on the range to be painted on the hairpin wire. The scanning speed adjustment structure can adjust the scanning speed of the laser beam in a certain direction, so that the scanning speed of the laser beam in a certain direction is greatly improved, thereby improving the paint removal efficiency of the paint removal device on the hairpin wire. The paint removal device of the present application has a simple structure and is easy to operate. It can greatly improve the efficiency of paint removal on the flat wire motor stator hairpin wire and improve the quality and effect of paint removal.

[0049] Specifically, Figure 1As shown, a flat wire motor stator hairpin wire paint removal device includes a laser 1, a transmission optical 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 suction 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 above power; one end of the transmission optical fiber 2 is connected to the laser 1 for transmitting the laser beam; the optical isolator output head 3 is connected to the other end of the transmission optical fiber 2 for exporting the laser beam; the beam expander 4 is in the optical path of the optical isolator output head 3 to export the laser beam The above is used to expand the laser beam, and the beam expander 4 is a 1.5-fold beam expander; the scanning range adjustment structure is located on the optical path of the laser beam derived from the beam expander 4 and is used 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 depainted, and 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 depainted and is used to suck dust and smoke generated by depainting, and the dust suction structure 9 is a suction structure with a fan, and its wind speed is 30m / s.

[0050] In actual operation, a laser 1 is used to generate a laser beam, which is focused on a hairpin line 10 to be depainted after passing through a transmission optical 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; the scanning trajectory and the scanning speed of the focal point of the laser beam are adjusted based on the scanning range adjustment structure and the scanning speed adjustment structure, so as to set the depainting range for the hairpin line 10 for depainting; during the depainting process, the dust and smoke generated are sucked out by a dust suction structure 9.

[0051] In some embodiments of the present application, the present embodiment optimizes the above-mentioned scanning speed adjustment structure, specifically, Figure 1 As shown, the scanning speed adjustment structure includes a multifaceted prism 7, which is located in the optical path of the laser light beam reflected by the scanning range adjustment structure. The multifaceted prism 7 is rotatable around the X-axis and has a plurality of reflective mirror columnar structures on its outer side. The multifaceted prism 7 is used to adjust the scanning speed of the laser light beam in the Y direction, which is the direction of travel of the hairpin line; the X direction is a horizontal direction perpendicular to the Y direction.

[0052] The multifaceted prism 7 has a plurality of reflecting mirrors. The multifaceted prism 7 rotates around the X-axis. The reflecting mirrors on the outside thereof will continuously reflect the laser beam emitted from the scanning range adjustment structure. The laser reflected from the scanning range adjustment structure is emitted along the Y direction. During the rotation of the multifaceted prism 7, the reflecting mirrors are always parallel to the X-axis. The angle between the reflecting mirrors and the Y direction is constantly changing. Under the action of the reflecting mirrors, the focal point of the laser beam on the hairpin line constantly changes in the Y direction. The speed at which the focal point moves along the Y direction on the hairpin line is positively correlated with the rotation speed of the multifaceted prism 7. The faster the rotation speed of the multifaceted prism 7, the faster the moving speed of the focal point of the laser light on the hairpin line, that is, the faster the scanning speed. Therefore, in practical applications, the scanning speed can be adjusted by adjusting the rotation speed of the multifaceted prism 7.

[0053] The number of reflecting mirror surfaces of the polygonal prism 7 of this embodiment is 6 to 30, and the rotation speed of the polygonal prism 7 around the X-axis is 100rpm to 20000rpm, and the corresponding line scanning speed is 10m / s to 200m / s. In actual application, the polygonal prism 7 with a suitable structure and a suitable rotation speed can be selected according to actual needs.

[0054] In other embodiments of the present application, the present embodiment optimizes the above-mentioned scanning range adjustment structure. Specifically, 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 derived from the beam expander 4. The X-axis scanning lens 5 is a reflecting mirror that can be deflected around the Y-axis to adjust the X-direction 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 reflecting mirror that can be deflected around the X-axis to adjust the Y-direction scanning range of the laser beam. The scanning angle range of the Y-axis scanning lens 6 is -12.5° to +12.5°.

[0055] After being emitted from the beam expander 4 , the laser beam enters the X-axis scanning lens 5 , and 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] The present application also optimizes a specific paint removal method. The method for adjusting the scanning trajectory of the laser beam focal point based on the scanning range adjustment structure described above is: based on the Y-axis scanning lens 6 in the scanning range adjustment structure, the laser beam focal point is adjusted to move along the Y-direction straight line. After completing a Y-direction straight line movement trajectory, the X-axis scanning lens 5 in the scanning range adjustment structure is used to adjust the laser beam focal point to move along the X-direction to the starting point of the next Y-direction straight line movement trajectory, and the scanning of the next Y-direction straight line movement trajectory is started, and this is performed in sequence until the movement of all scanning ranges is completed.

[0057] like Figures 2 to 4 As shown, the area between the shadow areas is the paint removal area of ​​the hairpin line, and the focal point of the laser beam moves in a straight line in the paint removal area until all the paint removal areas are completely covered. The movement mode of the focal point of this embodiment is linear movement, with the Y end of the paint removal area on the X side as the starting point of the first Y-direction linear movement trajectory, and then moves along the Y direction to the other end of the paint removal area on the X side, and when the focal point moves to the Y end of the paint removal area on the X side, the first Y-direction linear movement trajectory is completed; then, under the adjustment of the X-axis scanning lens 5, the focal point moves along the X direction to the starting point of the second Y-direction linear movement trajectory, and the starting point of the second Y-direction linear movement trajectory is adjacent to the end point of the first Y-direction linear movement trajectory, and then the focal point moves along the Y direction to the end point of the second Y-direction linear movement trajectory until the second Y-direction linear movement trajectory is completed; and this is carried out in sequence until all the paint removal areas are completely covered.

[0058] The movement of the focus point in this embodiment is a zigzag reciprocating movement, and the spacing between adjacent Y-direction straight line movement tracks is 0.002mm to 0.2mm (such as Figures 3-4 The W shown in the figure actually requires that the edges of adjacent Y-direction linear motion tracks should overlap or just touch each other to ensure that the insulating paint layer on the paint removal area can be completely removed. The focal point of the laser beam is a circular spot with a certain width. When the focal point moves along the Y-direction straight line, a straight line with a certain width of ablation will be formed on the paint removal area, which is the Y-direction linear motion track mentioned above.

[0059] Furthermore, this embodiment further limits the movement of the laser beam focal point. This embodiment limits the scanning range (i.e., the paint removal area described above, such as Figure 1 C) is divided into a middle area in the middle of the Y direction (such as Figure 2 The A part shown in FIG. 1 and the transition area from the middle area Y to both sides (as shown in FIG. Figure 2 B shown), that is, the paint removal area C = A + 2B. Based on the scanning range adjustment structure, only the middle area is scanned first, and after the scanning of the middle area is completed, the combined area including the transition area and the middle area is scanned.

[0060] Assume that the Y-direction width of the middle area is M, the Y-direction width of the transition area is L, and the Y-direction width of the entire scanning range is M+2L. In actual operation, the middle area is first scanned, and the focal point of the laser beam is taken from the Y-direction end of the X-direction side of the middle area as the starting point of the first middle area straight line track, and then moves along the Y direction to the Y-direction end of the X-direction side of the middle area, and the Y-direction end of the X-direction side of the middle area is the end point of the first middle area straight line track. The length of the first middle area straight line track is M. After the movement of the first middle area straight line track is completed, it moves along the X direction to the starting point of the second middle area straight line track under the action of the X-axis scanning lens 5. The end point of the first middle area straight line track and the starting point of the second middle area straight line track are adjacent to each other and are on the same side of the Y direction, and then moves along the Y direction to the end point of the second middle area straight line track until the movement of the second middle area straight line track is completed, and this is performed in sequence until the first scan of the middle area is completed; it can be selected whether to perform a second scan or a third scan according to the removal of the insulating paint layer in the middle area... until the scanning of the insulating paint layer in the middle area meets the set requirements;

[0061] Then, the transition area and the middle area are superimposedly scanned, that is, the paint removal area is scanned as a whole, and the focal point of the laser beam is from the Y direction end of the paint removal area X direction (that is, the end of the transition area X direction on one side away from the middle area) as the starting point of the first combined area straight line trajectory, and then moves along the Y direction to the Y direction end of the paint removal area X direction (that is, the end of the transition area X direction on the other side away from the middle area), and the Y direction end of the paint removal area X direction is the end point of the first combined area straight line trajectory. The length of the first combined area straight line trajectory is M+2L, and the first combined area straight line trajectory is completed. After the movement of the track, 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 track, the end point of the first combined area straight track and the starting point of the second combined area straight track are adjacent to each other and on the same side in the Y direction, and then moves along the Y direction to the end point of the second combined area straight track until the movement of the second combined area straight track is completed, and this is performed in sequence until the first scan of the paint removal area is completed; it can be selected whether to perform a second scan or a third scan according to the removal condition of the insulating paint layer in the paint removal area, until the scanning of the insulating paint layer in the paint removal area meets the set requirements;

[0062] When scanning the paint removal area, not only the transition area is scanned, but also the middle area is scanned again. That is to say, as long as there is a transition area, the number of scans of the middle area is greater than the number of scans of the transition area. The final result is that the ablation condition of the paint layer in the transition area is different from the ablation condition of the paint layer in the middle area.

[0063] In specific implementation, the middle area can be scanned first, and after completing one scan of the middle area, the paint removal area can be scanned, and after completing one scan of the paint removal area, the middle area can be scanned again, and the scanning can be performed alternately until the set paint removal effect is achieved; or the middle area can be scanned multiple times first, and then the paint removal area can be scanned multiple times until the set paint removal effect is achieved. The appropriate process can be selected according to the actual situation.

[0064] Generally speaking, the width of the transition region along the Y direction is 0 mm to 3 mm. When the width of the transition region is 0 mm, there is no transition region.

[0065] like Figure 1 As shown, the Y direction of this application is Figure 1 The left and right directions in the present application are X-direction. Figure 1 In the direction perpendicular to the paper, the moving direction of the stator hairpin wire of the flat wire motor of the present application is the Y direction.

[0066] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A paint removal device for stator hairpin wire of a flat wire motor, characterized in that: include, A laser (1), wherein the laser (1) is used to emit a laser beam; A transmission optical fiber (2), one end of which is connected to the laser (1) for transmitting the laser beam; An optical isolator output head (3), the optical isolator output head (3) being connected to the other end of the transmission optical fiber (2) and used for exporting a laser beam; A beam expander (4), the beam expander (4) being located on the optical path of the laser beam outputted from the optical isolator output head (3) and used for expanding the laser beam; A scanning range adjustment structure, the scanning range adjustment structure is located on the optical path of the laser beam derived from the beam expander (4) and is used to adjust the scanning range of the laser beam; A scanning speed adjustment structure, wherein the scanning speed adjustment structure is used to adjust the scanning speed of the laser beam in a certain direction; A focusing lens (8), the focusing lens (8) being located on the optical path of the laser beam reflected by the scanning speed adjustment structure, and being used to focus the laser beam onto the hairpin line to be depainted; A dust suction structure (9) is located between the focusing lens (8) and the hairpin line to be depainted and is used for sucking dust and smoke generated by depainting.

2. A paint removal device for a flat wire motor stator hairpin wire according to claim 1, characterized in that: The scanning speed adjustment structure comprises a multifaceted prism (7); the multifaceted prism (7) is located on the optical path of the laser beam reflected by the scanning range adjustment structure, the multifaceted prism (7) is rotatable around an X-axis, and the outer side of the multifaceted prism (7) is a plurality of reflective mirror columnar structures, and the multifaceted prism (7) is used to adjust the scanning speed of the laser beam in the Y direction; the Y direction is the direction in which the hairpin line travels; and the X direction is a horizontal direction perpendicular to the Y direction.

3. A paint removal device for stator hairpin wire of a flat wire motor as claimed in claim 2, characterized in that: The number of reflecting mirror surfaces 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.

4. A paint removal device for a flat wire motor stator hairpin wire according to claim 1, characterized in that: The scanning range adjustment structure includes: An X-axis scanning mirror (5), the X-axis scanning mirror (5) being located on the optical path of the laser beam derived from the beam expander (4), and the X-axis scanning mirror (5) being a reflective mirror surface that can be deflected about a Y-axis to adjust the X-direction scanning range of the laser beam; The Y-axis scanning mirror (6) is located on the optical path of the laser beam reflected by the X-axis scanning mirror (5). The Y-axis scanning mirror (6) is a reflecting mirror surface that can be deflected around the X-axis to adjust the Y-axis scanning range of the laser beam.

5. A paint removal device for stator hairpin wire of a flat wire motor as claimed in claim 4, characterized in that: The scanning angle range of the X-axis scanning lens (5) is -16° to +16°.

6. A paint removal device for stator hairpin wire of a flat wire motor as claimed in claim 4, characterized in that: The scanning angle range of the Y-axis scanning lens (6) is -12.5° to +12.5°.

7. A method for removing paint from the stator hairpin wire of a flat wire motor, characterized in that: The paint removal method adopts any one of the flat wire motor stator hairpin wire paint removal devices as claimed in claims 1 to 6 to remove paint, comprising: A laser beam is generated by a laser (1), and the laser beam is sequentially passed through a transmission optical 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) before being focused onto a hairpin line to be depainted; 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, so as to set the paint removal range of the hairpin line for paint removal.

8. A method for removing paint from a stator hairpin wire of a flat wire motor as claimed in claim 7, characterized in that: The method for adjusting the scanning trajectory of the laser beam focal point based on the scanning range adjustment structure comprises: adjusting the laser beam focal point to move along the Y direction straight line based on the Y-axis scanning lens (6) in the scanning range adjustment structure, and after completing a Y-direction straight line movement trajectory, adjusting the laser beam focal point to move along the X direction to the starting point of the next Y-direction straight line movement trajectory using the X-axis scanning lens (5) in the scanning range adjustment structure, and starting to scan the next Y-direction straight line movement trajectory, and performing the above steps in sequence until the movement of all scanning ranges is completed.

9. A method for removing paint from a stator hairpin wire of a flat wire motor as claimed in claim 8, characterized in that: The scanning range includes a middle area in the middle of the Y direction and transition areas on both sides of the middle area in the Y direction; based on the scanning range adjustment structure, only the middle area is scanned first, and after the scanning of the middle area is completed, the combined area including the transition area and the middle area is scanned.

10. A method for removing paint from a stator hairpin wire of a flat wire motor as claimed in claim 9, characterized in that: The width of the transition area along the Y direction is 0 mm to 3 mm.

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