Motor card forming apparatus and process

Abstract

The present application belongs to the technical field of motor coil processing, and provides a motor hairpin forming equipment and process, which comprises a conveying mechanism, an outward expansion forming mechanism, an end forming mechanism and an arc forming mechanism; the outward expansion forming mechanism, the end forming mechanism and the arc forming mechanism are sequentially arranged along the conveying path of the conveying mechanism. The present application arranges multiple stations along the conveying mechanism, i.e. end forming, outward expansion forming and arc forming of the hairpin, and the hairpin to be processed is transferred among the above three stations through the conveying mechanism, so that the three stations work simultaneously, and the efficiency of the equipment can be improved; the present application adopts the mold of the end forming mechanism, the outward expansion forming mechanism and the arc forming mechanism to uniformly form the same shape part (end shape) of different hairpins, and the different parts adopt the forming form of CNC, which can be compatible with all hairpins, and the land area and economic cost are well saved as a large number of molds are not needed.

Description

Technical Field

[0001] This invention belongs to the field of motor coil processing technology, and specifically relates to a motor hairpin forming equipment and process. Background Technology

[0002] With the increasing application of flat wire stators for motors, many manufacturers have invested in the research and development of flat wire stator products. Due to patent constraints, the new solutions launched by various manufacturers generally adopt a hairpin expansion structure to adapt to diverse winding requirements. However, this expansion hairpin poses a certain challenge to flexible manufacturing. In the current mainstream flexible 3D molding production solutions, one type uses a mold forming process to complete 3D molding in a single stamping operation. A mold library is used to equip each type of hair clip with a dedicated mold, thus enabling the manufacturing of different hair clips. The other type is a one-step molding method similar to a spring machine. However, existing technologies have significant limitations: in the mold forming method, one mold can only be used for the 3D molding of one type of hair clip. To cover all hair clips with the same mold base, a mold library must be used to integrate and install all molds, and a servo system must be used for mold switching. This not only significantly increases equipment costs and floor space, but also requires improvement in flexibility. As for the spring machine molding method, its core problem lies in the difficulty of ensuring hair clip consistency and molding efficiency. Summary of the Invention

[0003] To address the problems in the background art, this invention proposes a motor hairpin forming equipment and process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A motor hairpin forming device includes a conveying mechanism, an outward forming mechanism, an end forming mechanism, and an arc forming mechanism; The outward expansion forming mechanism, the end forming mechanism, and the arc forming mechanism are sequentially arranged along the conveying path of the conveying mechanism; The outward expansion forming mechanism is equipped with a U-shaped hair clip to be processed, which is used to perform outward expansion forming processing on the U-shaped hair clip to be processed; The end forming mechanism is equipped with a U-shaped hair clip that has been expanded and formed, and is used to perform end forming processing on the U-shaped hair clip that has been expanded and formed. The arc forming mechanism is equipped with a U-shaped hair clip after end forming processing, and is used to process the arc of the U-shaped hair clip after end forming processing.

[0005] Preferably, the U-shaped hair clip includes a U-shaped segment and a vertical segment integrally connected to both ends of the U-shaped segment; After the outward expansion forming process, the plane containing the two vertical sections forms an obtuse angle with the plane containing the U-shaped section, forming a bending structure at the boundary between the two vertical sections and the U-shaped section; After end forming, a Z-shaped structure is formed in the middle of the U-shaped segment; After the arc is processed, the U-shaped hairpin is projected from the open end to the closed end. The U-shaped segment is a two-segment connected and symmetrical arc structure.

[0006] Preferably, the outward expansion forming mechanism includes an outward expansion forming base, a first servo unit, a second servo unit, an outward expansion forming mold, a pre-outward expansion fixture, and a post-outward expansion fixture; The upper surface of the outwardly expanded molding base is provided with a sliding groove; The first servo unit is mounted on the upper surface of the outwardly expanded base, and its end is connected to the second servo unit; The second servo unit is slidably mounted in the groove, and its end is connected to the outward expansion forming mold, which is used to clamp the U-shaped segment; The pre-expansion clamp is fixedly installed on the surface of the expansion forming base; The expanded rear clamp is slidably mounted on the surface of the expanded forming base and faces the expanded front clamp. The expanded front clamp and the expanded rear clamp are used to clamp the vertical section.

[0007] Preferably, the pre-expansion fixture and the post-expansion fixture are located below the expansion forming mold.

[0008] Preferably, the end forming mechanism includes an end forming base, an adapter plate, end grippers, a pre-end forming mold, and a post-end forming mold; The adapter plate is mounted on top of the end molding base; The end grippers are mounted on the lower surface of the adapter plate; Both the pre-forming mold and the post-forming mold are slidably mounted on the lower surface of the end gripper. During end forming, the pre-end forming mold and the post-end forming mold move toward each other and squeeze the U-shaped segment (501) until the end forming process is completed.

[0009] Preferably, the end face of the mold before end forming is a first Z-shaped surface, and the end face of the mold after end forming is a second Z-shaped surface. The first Z-shaped surface and the second Z-shaped surface are used to form the Z-shaped structure after extruding the U-shaped segment.

[0010] Preferably, the arc forming mechanism includes an arc forming base, a third servo unit, a fourth servo unit, a fifth servo unit, an arc forming gripper, a front arc forming fixture, and a rear arc forming fixture. The third servo unit is mounted on the top of the arc-shaped base; the fourth servo unit is mounted at the end of the third servo unit for controlling the coordinates of the fourth servo unit in the first direction. The fourth servo unit is equipped with a fifth servo unit at its end, which is used to control the coordinates of the fifth servo unit in a second direction, which is perpendicular to the first direction. The fifth servo unit is equipped with an arc-shaped forming gripper at its end, which is used to control the rotation angle of the arc-shaped forming gripper. The arc-shaped clamping claw is used to clamp a vertical segment of the U-shaped hair clip; The pre-curved forming clamp and the post-curved forming clamp are movably mounted on the side of the curved forming base to jointly clamp the other vertical section of the U-shaped hair clip.

[0011] Preferably, a first cylinder is installed at one end of the pre-curved forming fixture; a second cylinder is installed at one end of the post-curved forming fixture. The first cylinder is used to drive the arc forming pre-clamp to slide; The second cylinder is used to drive the arc-shaped fixture to slide.

[0012] Preferably, the conveying mechanism is further provided with a loading station and a unloading station; the loading station is located before the outward expansion forming mechanism along the conveying direction of the conveying mechanism, and the unloading station is located after the arc forming mechanism.

[0013] A hair clip forming process for an electric motor, used in the aforementioned hair clip forming equipment, is characterized by comprising the following steps: The U-shaped hair clip to be processed is clamped using an outward expansion forming mechanism, and the U-shaped hair clip to be processed is outward expansion forming. The U-shaped hairpin, after being expanded and formed, is clamped on the end forming mechanism, and the end forming process is performed on the U-shaped hairpin after being expanded and formed. The U-shaped hairpin with the end forming process is clamped using an arc forming mechanism to process the arc of the U-shaped hairpin with the end forming process.

[0014] The beneficial effects of this invention are: 1. The present invention sets up multiple workstations along the conveying mechanism, namely the end forming, outward expansion forming and arc forming of the hair clip. The hair clip to be processed is transferred between the above three workstations through the conveying mechanism. The three workstations work at the same time, which can improve the efficiency of the equipment. 2. This invention uses molds such as end forming mechanism, outward expansion forming mechanism and arc forming mechanism to uniformly form the same shape part (end shape) of different hair clips. Different parts are formed by CNC forming, which can be compatible with all hair clips. Since there is no need to set up a large number of molds, it saves a lot of floor space and economic costs.

[0015] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a motor hairpin forming device according to the present invention is shown; Figure 2 A molding process diagram of the U-shaped hair clip of the present invention is shown; Figure 3 A schematic diagram of the external expansion forming mechanism of the present invention is shown; Figure 4a A schematic diagram of the end forming mechanism of the present invention is shown; Figure 4b It shows Figure 4a A bottom view; Figure 5a A schematic diagram of the arc forming mechanism of the present invention is shown; Figure 5b A front view of the arc forming mechanism of the present invention is shown; Figure 6 A flowchart of a motor hairpin forming process according to the present invention is shown.

[0018] In the diagram: 1. Conveying mechanism; 2. Outward expansion forming mechanism; 201. Outward expansion forming base; 2011. Slide groove; 202. First servo unit; 203. Second servo unit; 204. Outward expansion forming mold; 205. Outward expansion front fixture; 206. Outward expansion rear fixture; 3. End forming mechanism; 301. End forming base; 302. Adapter plate; 303. End gripper; 304. End forming front mold; 3041. First Z-shaped surface; 305. End forming rear mold; 30 51. Second Z-shaped surface; 4. Curved forming mechanism; 401. Curved forming base; 402. Third servo unit; 403. Fourth servo unit; 404. Fifth servo unit; 405. Curved forming gripper; 406. Curved forming front fixture; 407. Curved forming rear fixture; 408. First cylinder; 409. Second cylinder; 4010. Adapter block; 5. U-shaped hairpin; 501. U-shaped segment; 502. Vertical segment; 503. Bending structure; 504. Z-forming structure. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a motor hairpin forming device includes a conveying mechanism 1, an outward expansion forming mechanism 2, an end forming mechanism 3, and an arc forming mechanism 4.

[0021] Specifically, the conveying mechanism 1 has five stations along the conveying path, labeled A, B, C, D, and E, where station A is the loading station and station E is the unloading station. Stations B, C, and D are then sequentially equipped with an outward expansion forming mechanism 2, an end forming mechanism 3, and an arc forming mechanism 4. These three mechanisms are the main mechanisms for processing motor hair clips. The hair clips to be processed are transferred between stations B, C, and D via the conveying mechanism 1. The simultaneous operation of these three stations improves equipment efficiency.

[0022] like Figure 2 As shown in the figure, it illustrates the target... Figure 1 The equipment processes U-shaped hair clips 5. From Figure 2 As can be clearly seen, the U-shaped hairpin 5 consists of two parts: a U-shaped segment 501 and a vertical segment 502, with the vertical segment 502 and the two ends of the U-shaped segment 501 being integrally connected. Different parts of the U-shaped hairpin 5 can be machined using CNC (Computer Numerical Control), while identical parts can be machined using the equipment at the aforementioned five workstations. The processing of the U-shaped hair clip 5 is carried out according to the following steps: First, step a) loads the flat U-shaped hair clip 5; then, the U-shaped hair clip 5 to be processed (flat) is clamped onto the outward expansion forming mechanism 2 to complete the outward expansion forming process, forming a bending structure 503 at the boundary between the U-shaped segment 501 and the vertical segment 502; next, the U-shaped hair clip 5 after the outward expansion forming process is transferred to the end forming mechanism 3 and clamped and fixed for end forming (Z forming) processing, forming a Z forming structure 504 in the middle position of the U-shaped segment 501; then, the U-shaped hair clip 5 after the end forming process is clamped onto the arc forming mechanism 4 to process its arc; after the above process, the final formed U-shaped hair clip 5 can be obtained.

[0023] It should be noted that after the outward expansion forming process, the plane where the two vertical segments 502 are located forms an obtuse angle with the plane where the U-shaped segment 501 is located; after the end forming process, the U-shaped segment 501 forms a characteristic end; after the curvature processing, projecting from the open end of the U-shaped hairpin 5 to the closed end, the U-shaped segment 501 is a two-segment connected and symmetrical arc structure.

[0024] like Figure 3 As shown, the outward expansion forming base 201 is a welding base, and a groove 2011 is formed on the upper surface of the base. The first servo unit 202 is installed on the upper surface of the outward expansion forming base 201, and its end is connected to the second servo unit 203. During operation, the first servo unit 202 can adjust the position of the second servo unit 203 by means of its own servo motor and other drive components, thereby providing an accurate position control basis for the subsequent movement of the outward expansion forming mold 204.

[0025] The second servo unit 203 is slidably mounted in the slide groove 2011, allowing it to move flexibly along the track of the slide groove 2011. Its end is connected to the outward expansion forming mold 204. The main function of the outward expansion forming mold 204 is to clamp the U-shaped segment 501. During the process of the first servo unit 202 adjusting the position of the second servo unit 203, the second servo unit 203 can move the outward expansion forming mold 204 within the slide groove 2011, thereby driving the outward expansion forming mold 204 to perform the outward expansion forming operation on the U-shaped segment 501.

[0026] The pre-expansion clamp 205 is fixedly mounted on the surface of the expansion forming base 201, maintaining a fixed position to provide a stable reference for clamping operations. The post-expansion clamp 206 is movably mounted on the surface of the expansion forming base 201, with its mounting direction facing the pre-expansion clamp 205. Furthermore, both the pre-expansion clamp 205 and the post-expansion clamp 206 are located below the expansion forming mold 204.

[0027] During operation, the pre-expansion clamp 205 and the post-expansion clamp 206 cooperate to clamp the vertical section 502. Specifically, the post-expansion clamp 206 can be adjusted according to the actual position of the vertical section 502, forming a clamping force with the pre-expansion clamp 205. This ensures that the vertical section 502 can be clamped during the expansion forming operation of the U-shaped section 501, preventing the vertical section 502 from shifting position due to the expansion force of the U-shaped section, thereby ensuring the accuracy and stability of the entire forming process.

[0028] It should be noted that during operation, the outward expansion forming mold 204 wraps around the U-shaped segment 501, and the first servo unit 202 and the second servo unit 203 work together to complete the flaring action. Moreover, the simultaneous action of the two ensures that the U-shaped hairpin 5 can move downward at the same time as it bends outward to compensate for the shortening of the vertical distance of the U-shaped hairpin 5.

[0029] like Figure 4a As shown, the end forming mechanism 3 consists of an end forming base 301, a transition plate 302, an end gripper 303, a pre-end forming mold 304, and a post-end forming mold 305. The transition plate 302 is bolted to the top of the end forming base 301, and the end gripper 303 is mounted on the lower surface of the transition plate 302. Both the pre-end forming mold 304 and the post-end forming mold 305 are slidably mounted on the lower surface of the end gripper 303. During the end forming operation, the pre-end forming mold 304 and the post-end forming mold 305 move towards each other, compressing the U-shaped segment 501 until the end forming process is completed.

[0030] Alternatively, in another embodiment, the pre-forming mold 304 is slidably mounted on the lower surface of the end gripper 303, while the post-forming mold 305 is fixed to the lower surface of the end gripper 303. During the end forming operation, the pre-forming mold 304 gradually moves toward the post-forming mold 305, extruding the U-shaped segment 501 until the end forming process is completed.

[0031] like Figure 4b As shown, the facing surfaces of the pre-forming mold 304 and the post-forming mold 305 are both Z-shaped surfaces, specifically the first Z-shaped surface 3041 (the end face of the pre-forming mold 304) and the second Z-shaped surface 3051 (the end face of the post-forming mold 305). When the two surfaces approach each other, they can cooperate. When the U-shaped segment 501 is squeezed by the two Z-shaped surfaces, it will form a shape like... Figure 2 Step c corresponds to Z-shaped structure 504.

[0032] As an optional embodiment, the Z-shaped surface can be configured as a stepped structure, or a... Figure 4b The auxiliary block, when engaged with the pre-forming mold 304 or the post-forming mold 305, keeps the end faces of the two staggered in the length direction, and then is fixed.

[0033] like Figure 5a As shown, the arc forming mechanism 4 includes an arc forming base 401, a third servo unit 402, a fourth servo unit 403, a fifth servo unit 404, an arc forming gripper 405, a front arc forming fixture 406, and a rear arc forming fixture 407.

[0034] The third servo unit 402 is fixedly mounted on the top of the arc-forming base 401, and the fourth servo unit 403 is slidably mounted on the upper surface of the third servo unit 402. Therefore, the main function of the third servo unit 402 is to drive the fourth servo unit 403 to slide through a structure such as a cylinder, thereby controlling the coordinates of the fourth servo unit 403 in the first direction (X-axis direction). A fifth servo unit 404 is slidably mounted on one side of the fourth servo unit 403. The fifth servo unit 404 is driven to slide through a structure such as a cylinder, thereby controlling the coordinates of the fifth servo unit 404 in the second direction (Y-axis direction), which is perpendicular to the first direction. An arc-forming gripper 405 is mounted at the end of the fifth servo unit 404 to control the rotation angle of the arc-forming gripper 405. The arc-forming gripper 405 is used to clamp one vertical segment 502 of the U-shaped hair clip 5. The arc-forming pre-clamp 406 and arc-forming post-clamp 407 are slidably mounted on the side of the arc-forming base 401 to jointly clamp the other vertical segment 502 of the U-shaped hair clip 5.

[0035] Furthermore, such as Figure 5b As shown, a first cylinder 408 and a second cylinder 409 are also installed on the surface of the arc-forming base 401 facing the U-shaped hairpin 5. The telescopic shaft of the first cylinder 408 is connected to the arc-forming pre-clamp 406. When the telescopic shaft of the first cylinder 408 extends, it can drive the arc-forming pre-clamp 406 to slide until it clamps the U-shaped hairpin 5 and a vertical section 502. In addition, the telescopic shaft of the second cylinder 409 is rotatably connected to a transition block 4010. The transition block 4010 is triangular, and its three ends are respectively rotatably connected to the telescopic shaft of the second cylinder 409, the connecting rod rotatably connected to the arc-forming post-clamp 407, and the support fixedly installed on the arc-forming base 401. When the cylinder shaft of the second cylinder 409 extends, it drives the transition block 4010 to swing. Then, the transition block 4010 drives the arc-forming post-clamp 407 to slide through the connecting rod, thereby clamping the vertical section 502 together with the arc-forming pre-clamp 406.

[0036] It should be noted that during the arc forming process, the pre-arc forming clamp 406 and the post-arc forming clamp 407 jointly clamp and fix one vertical segment 502 of the U-shaped hair clip 5 to be formed, while the arc forming jaw 405 clamps the other vertical segment 502 of the hair clip. The third servo unit 402 and the fourth servo unit 403 can adjust the horizontal coordinate of the arc forming jaw 405 through servo motors and other structures. The fifth servo unit 404 can adjust the rotation angle of the arc forming jaw 405 in the horizontal plane through servo motors and other structures (at this time, one vertical segment 502 is fixed, and the other vertical segment 502 rotates relative to it). The various structures cooperate with each other to bend the U-shaped segment 501 into a certain arc, thus completing the angle forming of the hair clip. like Figure 6The image shows a hairpin forming process for an electric motor, used in the aforementioned hairpin forming equipment, comprising the following steps: S1: Load the material at station A and install the U-shaped hair clip 5 to be processed onto the conveyor mechanism.

[0037] S2: At station B, the outward expansion forming mechanism 2 clamps the U-shaped hair clip 5 to be processed, and performs outward expansion forming on the U-shaped hair clip 5. Specifically, at this time, the U-shaped hair clip 5, the U-shaped segment 501, and the vertical segment 502 are coplanar. The two vertical segments 502 are clamped by the outward expansion front clamp 205 and the outward expansion rear clamp 206, while the outward expansion front clamp 205 clamps the U-shaped end 501. Subsequently, the first servo unit 202 pushes the second servo unit 203 to... Figure 2 The middle right side moves, while the second servo unit 203 drives the outward expansion clamp 205 to move towards... Figure 2 Moving downwards and inwards, based on the vector synthesis during operation, the final outward expansion clamp 205 drives the U-shaped segment 501 towards... Figure 2 Move it to the lower right so that the plane containing the U-shaped segment 501 and the vertical segment 502 forms an obtuse angle, resulting in an outwardly expanded U-shaped hairpin 5.

[0038] S3: At station C, the U-shaped hairpin 5 after the outward expansion molding process is clamped on the end forming mechanism 3, and the end forming process of the U-shaped hairpin 5 after the outward expansion molding process is performed to obtain the Z-shaped structure 504.

[0039] S4: At station D, the arc forming mechanism 4 clamps the U-shaped hairpin 5 after end forming processing, and processes the arc of the U-shaped hairpin 5 after end forming processing. Specifically, the servo motors of the third servo unit 402 and the fourth servo unit 403 are used to adjust the position of the arc forming jaw 405, and then the arc forming jaw 405 is used to clamp one vertical segment 502 of the U-shaped hairpin 5. At the same time, the arc forming pre clamp 406 and the arc forming post clamp 407 are used to clamp the other vertical segment 502 of the U-shaped hairpin 5. Then, the servo motor of the fifth servo unit 404 is used to rotate the arc forming jaw 405, so that the U-shaped segment 501 is bent to a certain arc.

[0040] S5: The material is cut at station E to obtain the final U-shaped hair clip 5.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor hairpin forming device, characterized in that, It includes a conveying mechanism (1), an outward expansion forming mechanism (2), an end forming mechanism (3), and an arc forming mechanism (4); The outward expansion forming mechanism (2), the end forming mechanism (3) and the arc forming mechanism (4) are arranged sequentially along the conveying path of the conveying mechanism (1); The outward expansion forming mechanism (2) is equipped with a U-shaped hair clip (5) to be processed, which is used to perform outward expansion forming on the U-shaped hair clip (5) to be processed; The end forming mechanism (3) is equipped with a U-shaped hair clip (5) after the outward expansion forming process, which is used to perform end forming processing on the U-shaped hair clip (5) after the outward expansion forming process; The arc forming mechanism (4) clamps the U-shaped hair clip (5) after end forming processing, and is used to process the arc of the U-shaped hair clip (5) after end forming processing; the arc forming mechanism (4) includes an arc forming base (401), a third servo unit (402), a fourth servo unit (403), a fifth servo unit (404), an arc forming gripper (405), an arc forming front clamp (406), and an arc forming rear clamp (407); The third servo unit (402) is mounted on the top of the arc-shaped base (401); the fourth servo unit (403) is mounted at the end of the third servo unit (402) for controlling the coordinates of the fourth servo unit (403) in the first direction; The fourth servo unit (403) is equipped with a fifth servo unit (404) at its end, which is used to control the coordinates of the fifth servo unit (404) in a second direction, the second direction being perpendicular to the first direction; The fifth servo unit (404) is equipped with an arc-shaped forming gripper (405) at its end, which is used to control the rotation angle of the arc-shaped forming gripper (405). The arc-shaped clamping claw (405) is used to clamp a vertical segment (502) of the U-shaped hair clip (5); The arc-forming pre clamp (406) and arc-forming post clamp (407) are movably installed on the side of the arc-forming base (401) to jointly clamp the other vertical section (502) of the U-shaped hairpin (5); The U-shaped hair clip (5) includes a U-shaped segment (501) and a vertical segment (502) integrally connected to both ends of the U-shaped segment (501); After the outward expansion forming process, the plane where the two vertical sections (502) are located forms an obtuse angle with the plane where the U-shaped section (501) is located, and a bending structure (503) is formed at the boundary between the two vertical sections (502) and the U-shaped section (501); After end forming, a Z-shaped structure (504) is formed in the middle of the U-shaped segment (501); After the arc processing is performed, the U-shaped hairpin (5) is projected from the open end to the closed end. The U-shaped segment (501) is a two-segment connected and symmetrical arc structure.

2. The motor hairpin forming equipment according to claim 1, characterized in that, The outward expansion forming mechanism (2) includes an outward expansion forming base (201), a first servo unit (202), a second servo unit (203), an outward expansion forming mold (204), an outward expansion front fixture (205), and an outward expansion rear fixture (206); The upper surface of the outwardly expanded molding base (201) is provided with a sliding groove (2011); The first servo unit (202) is mounted on the upper surface of the outwardly expanded base (201) and its end is connected to the second servo unit (203); The second servo unit (203) is slidably installed in the slide groove (2011) and its end is connected to the outward expansion forming mold (204), which is used to clamp the U-shaped segment (501); The pre-expansion clamp (205) is fixedly installed on the surface of the expansion forming base (201); The expanded rear clamp (206) is slidably mounted on the surface of the expanded forming base (201) and faces the expanded front clamp (205). The expanded front clamp (205) and the expanded rear clamp (206) are used to clamp the vertical section (502).

3. The motor hairpin forming equipment according to claim 2, characterized in that, The pre-expansion fixture (205) and post-expansion fixture (206) are located below the expansion forming mold (204).

4. The motor hairpin forming equipment according to claim 1, characterized in that, The end forming mechanism (3) includes an end forming base (301), a transition plate (302), an end gripper (303), a pre-end forming mold (304), and a post-end forming mold (305); The adapter plate (302) is mounted on top of the end forming base (301); The end gripper (303) is mounted on the lower surface of the adapter plate (302); Both the pre-forming end mold (304) and the post-forming end mold (305) are slidably mounted on the lower surface of the end gripper (303); During end forming, the pre-end forming mold (304) and post-end forming mold (305) move toward each other and squeeze the U-shaped segment (501) until the end forming process is completed.

5. The motor hairpin forming equipment according to claim 4, characterized in that, The end face of the pre-forming mold (304) is a first Z-shaped surface (3041), and the end face of the post-forming mold (305) is a second Z-shaped surface (3051). The first Z-shaped surface (3041) and the second Z-shaped surface (3051) are used to extrude the U-shaped segment (501) to form the Z-shaped structure (504).

6. The motor hairpin forming equipment according to claim 1, characterized in that, A first cylinder (408) is installed at one end of the pre-curved forming fixture (406); a second cylinder (409) is installed at one end of the post-curved forming fixture (407). The first cylinder (408) is used to drive the arc forming pre-clamp (406) to slide; The second cylinder (409) is used to drive the arc-shaped fixture (407) to slide.

7. A motor hairpin forming device according to any one of claims 1-6, characterized in that, The conveying mechanism (1) is also provided with a loading station and a unloading station; along the conveying direction of the conveying mechanism (1), the loading station is located before the outward expansion forming mechanism (2), and the unloading station is located after the arc forming mechanism (4).

8. A motor hairpin forming process, used in the motor hairpin forming equipment according to any one of claims 1-7, characterized in that, Includes the following steps: The U-shaped hair clip (5) to be processed is clamped using the outward expansion forming mechanism (2), and the U-shaped hair clip (5) to be processed is outwardly expanded and formed. The U-shaped hairpin (5) after the outward expansion forming process is clamped on the end forming mechanism (3) and the end forming process is performed on the U-shaped hairpin (5) after the outward expansion forming process; The U-shaped hairpin (5) after end forming is clamped using the arc forming mechanism (4) to process the arc of the U-shaped hairpin (5) after end forming.

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