Motor stator stamping die

Abstract

The motor stator stamping die comprises a material belt conveying channel, an upper die set and a lower die set, the material belt conveying channel extends in the first direction and is used for conveying a material belt, and the upper die set and the lower die set are arranged on the two sides, in the second direction, of the material belt conveying channel in parallel. A plurality of forming stations and stamping stations are sequentially arranged between the upper die set and the lower die set in the conveying direction of the material belt, the forming stations are used for cutting and punching in the material belt to form semi-finished stators, and the semi-finished stators are 1 / 4 of finished stators in the circumferential direction. The stamping station is used for pressing the semi-finished stator out of the material belt in the second direction. The punching station comprises a rotary module, the upper module and the lower module do not cooperate for punching once, the rotary module rotates by 90 degrees in the circumferential direction so that four semi-finished stators can be correspondingly spliced into a finished stator, and the stators are punched in a segmented mode, so that material waste of a cavity part in the prior art is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mold equipment, and in particular to a motor stator stamping mold. Background Art

[0002] Stamping dies are technology-intensive products. The quality, cost and efficiency of stamping parts are directly related to the design and manufacture of stamping dies. The stators and rotors of motors on the market are currently stamped by dies and stacked in sheets. The stator sheets and rotor sheets are directly stamped out of the overall shape according to the preset size. In order to improve the performance of the motor, the material of the rotor strip is better than that of the stator strip, so the stator and rotor need to be stamped separately during stamping, which leads to a large amount of waste of the strip at the center of the stator sheet and the original position where the stator was stamped out. Summary of the invention

[0003] In order to overcome the above disadvantages, the object of the present invention is to provide a motor stator stamping die to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is a motor stator stamping die, including a material strip transmission channel, an upper die set and a lower die set, wherein: The material strip transmission channel extends along a first direction and is used to transmit the material strip. The upper die set and the lower die set are arranged in parallel on both sides of the material strip transmission channel along a second direction. A plurality of forming stations and stamping stations are arranged in sequence between the upper die set and the lower die set along the material strip transmission direction. The forming station is used to cut and punch holes in the material strip to form a semi-finished stator, which is 1 / 4 of the finished stator in the circumferential direction. The stamping station is used to press the semi-finished stator out of the material strip along the second direction. The stamping station includes a rotary die set. The upper die set and the lower die set are not stamped once. The rotary die set rotates 90° along the circumferential direction to splice the four semi-finished stators into a finished stator. The first direction is perpendicular to the second direction.

[0005] The present invention provides a motor stator stamping die, a motor stator stamping die, which is sequentially provided with a plurality of forming stations and stamping stations along the material belt transmission direction, thereby realizing the continuous production of cutting, punching, semi-finished product formation and finished product splicing, and reducing the material waste of the previous hollow part by punching the stator into sections.

[0006] In some embodiments, the rotary module includes a rotary base, which is a circular cylinder extending along the second direction, including a top connecting section, a rotating section and a bottom connecting section, wherein the top connecting section and the bottom connecting section are sleeved at the upper and lower ends of the rotating section and are rotatably connected to the rotating section. The rotating section can rotate along a circumferential direction, and a driven tooth surface is arranged on the outer surface along the circumference, and the circumference surrounds the second direction.

[0007] With the above technical solution, the rotary module adopts a circular cylindrical structure, and the top connecting section and the bottom connecting section are sleeved on the upper and lower ends of the rotating section. This design makes the overall structure more compact and saves installation space. In some embodiments, the lower die set is provided with a blanking channel extending along the second direction at the stamping station, and one side of the lower die set along the third direction is provided with an opening corresponding to the blanking channel. The rotary base is arranged in the blanking channel, and the top connecting section and the bottom connecting section are both connected and fixed to the lower die set. The first direction, the second direction and the third direction are perpendicular to each other.

[0008] With the above technical solution, the rotary base is set in the blanking channel, and the top connecting section and the bottom connecting section are fixedly connected to the lower die set, realizing the organic combination of the rotary die set and the blanking channel. This integrated design not only improves the overall stability of the mold, but also reduces the need for external transmission devices. In some embodiments, the rotary module further includes an inner positioning assembly, the inner positioning assembly includes a positioning column, the positioning column extends along the second direction and is disposed on the inner side of the rotary base. The positioning column is spaced apart from the rotary base in a radial direction and is used to form an annular section with the rotary base, and the radial direction is perpendicular to the second direction.

[0009] By adopting the above technical solution, by setting the inner positioning assembly, the positioning column is spaced apart from the rotating base in the radial direction to form an annular interval, which can achieve high-precision positioning of the stamping parts. This design can effectively reduce the dimensional deviation and scrap rate caused by inaccurate positioning during the stamping process. In some embodiments, the annular area is equally divided into a first stamping area, a second empty area, a third empty area, and a fourth empty area along the circumferential direction. The first stamping area and the third empty area are arranged on both sides of the positioning column along the first direction, and the second empty area and the fourth empty area are arranged on both sides of the positioning column along the third direction. The first stamping area is close to one side of the forming station.

[0010] In some embodiments, the inner positioning assembly further includes a shaft, a fixed plate, a first mounting side plate, and a second mounting side plate. The first mounting side plate and the second mounting side plate are arranged on a side of the rotary base away from the molding station along the first direction, and are both mounted on both ends of the lower mold assembly along the third direction. One end of the fixed plate along the first direction is connected to the first mounting side plate and the second mounting side plate respectively, and the other end is arranged corresponding to the positioning column along the second direction. The shaft extends along the second direction, the top is connected to the fixed plate, and the bottom is connected to the positioning column.

[0011] By adopting the above technical solution, a stable supporting structure is formed by the combination of the shaft rod, the fixing plate, the connecting plate and the first and second mounting side plates. The positioning column can evenly withstand the punching force, reduce local stress concentration, and ensure the accuracy and stability of the mold. In some embodiments, the rotary module further includes a fixed seat, a drive motor, a driving gear and a single-sided toothed synchronous belt, wherein the fixed seat is arranged on the same side as the opening and is arranged above the opening, and includes a mounting through hole extending along the second direction. The driving gear is arranged below the fixed seat and is arranged corresponding to the driven tooth surface along the third direction. The drive motor is fixed to the top of the fixed seat, and the motor driving end at the bottom thereof passes through the mounting through hole along the second direction to be connected to the driving gear. The single-sided toothed synchronous belt is sequentially wound around the driving gear and the driven tooth surface, and is used to drive the driving gear to rotate through the drive motor, so as to drive the rotating section to rotate.

[0012] By adopting the above technical solution, the fixing seat is arranged on the same side as the opening and connected to the driving motor through the mounting through hole, so that the structure of the entire module is more compact, and a single-sided tooth synchronous belt is used to connect the driving gear and the driven tooth surface. The driving motor drives the driving gear to rotate, thereby driving the rotating section to rotate accurately, avoiding the tooth gap problem that may occur in traditional gear transmission, and improving the stability and accuracy of the transmission. In some embodiments, the rotary module also includes a loading circular frame and a lifting rotary cylinder, the loading circular frame has an opening on the top and is arranged corresponding to the rotating section along the second direction; the side wall of the loading circular frame is provided with a spiral protrusion, and the bottom of the rotating section is circumferentially provided with a spiral groove matching the size of the spiral protrusion, which is used to be tightened and fixed by the spiral protrusion and the spiral groove, so as to carry the semi-finished stator through the loading circular frame.

[0013] The lifting and rotating cylinder is arranged at the bottom of the lower mold group, and the rotating driving end at the top thereof is passed through the lower mold group and is arranged corresponding to the loading circular frame along the second direction; a positioning groove is provided at the bottom of the loading circular frame, and a positioning block is provided corresponding to the top of the rotating driving end, which is used to be clamped and fixed with the positioning groove, so as to drive the loading circular frame to rotate and move along the second direction through the lifting and rotating cylinder.

[0014] By adopting the above technical solution, the loading circular frame is tightened and fixed by the spiral protrusion and the spiral groove at the bottom of the rotating section, so that the loading circular frame can rotate synchronously with the rotating section to carry and splice four semi-finished stators and continue to stack them. At the same time, after the loading circular frame is full, the loading circular frame is rotated out and separated by the lifting rotating cylinder for subsequent transportation.

[0015] In some embodiments, the drive motor is provided with an encoder on one side along the third direction, which is used to measure the angle and direction of rotation of the drive motor through the encoder, so that the drive motor drives the rotating section to rotate 90°, and rotates the semi-finished stator located in the first stamping area to the second unloaded area, so that the first stamping area can continue to stamp and carry subsequent semi-finished stators.

[0016] By adopting the above technical solution, adding an encoder to the motor can achieve precise position control.

[0017] In some embodiments, the stamping station includes an arc punch, which is matched in size and arranged in a corresponding position with the first stamping area along the second direction. The arc punch extends along the second direction, and the top is connected to the upper die set, so as to drive the arc punch downward through the upper die set to punch the semi-finished stator located above the first stamping area along the first stamping area into the loading circular frame.

[0018] By adopting the above technical solution, the arc punch matches the size of the first stamping area and the position is set accordingly, which can achieve high-precision positioning and stamping operations, ensure the accurate forming of the semi-finished stator during the stamping process, and reduce dimensional deviations caused by inaccurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of an embodiment of a motor stator stamping die of the present invention; Figure 2 It is a partial structural schematic diagram of an embodiment of a motor stator stamping die of the present invention; Figure 3 A side cross-sectional view of an embodiment of a motor stator stamping die of the present invention; In the figure: 1. Lower die set; 10. Opening; 11. Upper die set; 2. Rotary die set; 20. Rotary base; 200. Top connecting section; 201. Rotating section; 202. Bottom connecting section; 203. Driven tooth surface; 21. Fixed seat; 22. Driving motor; 23. Driving gear; 24. Encoder; 3. Arc punch; 40. Positioning column; 41. Shaft; 42. Fixed plate; 43. First mounting side plate; 44. Second mounting side plate; 45. Annular section; 50. Loading circular frame; 51. Lifting and rotating cylinder; 52. Rotating drive end; 53. Positioning block; 54. Positioning groove. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] refer to Figures 1 to 3 , Figure 1 A three-dimensional diagram of a motor stator stamping die provided by an embodiment of the present invention is shown; Figure 2 A partial structural schematic diagram of a motor stator stamping die provided by an embodiment of the present invention is shown; Figure 3 A side sectional view of a motor stator stamping die provided by an embodiment of the present invention is shown.

[0022] like Figures 1 to 3 As shown, the technical solution adopted by the present invention is a motor stator stamping die, including a material strip transmission channel, an upper die set 11 and a lower die set 1, wherein: The material belt transmission channel is along the first direction ( Figure 1 The upper mold assembly 11 and the lower mold assembly 1 are arranged in parallel in the material belt transmission channel along the second direction ( Figure 1 The upper die set 11 and the lower die set 1 are provided with a plurality of forming stations and stamping stations in sequence along the material belt transmission direction. The forming station is used to cut and punch holes in the material belt to form a semi-finished stator. The semi-finished stator is 1 / 4 of the finished stator in the circumferential direction. The stamping station is used to press the semi-finished stator out of the material belt along the second direction. The stamping station includes a rotary die set 2. The upper die set 11 and the lower die set 1 are not stamped once. The rotary die set 2 rotates 90° along the circumferential direction to splice the four semi-finished stators into a finished stator. The first direction is perpendicular to the second direction.

[0023] The present application provides a motor stator stamping die, which is provided with a plurality of forming stations and stamping stations in sequence along the material belt transmission direction, thereby realizing the continuous production of cutting, punching, semi-finished product formation and finished product splicing, and reducing the material waste of the previous hollow part by punching the stator into sections.

[0024] In some embodiments, reference Figures 1 to 3 The rotary module 2 includes a rotary base 20, which is a circular cylinder extending along the second direction, including a top connecting section 200, a rotating section 201 and a bottom connecting section 202. The top connecting section 200 and the bottom connecting section 202 are sleeved at the upper and lower ends of the rotating section 201 and are rotatably connected to the rotating section 201. The rotating section 201 can rotate in the circumferential direction, and a driven tooth surface 203 is circumferentially arranged on the outer surface, circumferentially surrounding the second direction.

[0025] Exemplarily, the rotary module 2 adopts a circular cylindrical structure, and the top connecting section 200 and the bottom connecting section 202 are sleeved on the upper and lower ends of the rotating section 201. This design makes the overall structure more compact and saves installation space.

[0026] In some embodiments, reference Figures 1 to 3 The lower die set 1 is provided with a blanking channel extending along the second direction at the stamping station, and the lower die set 1 is provided with a blanking channel extending along the third direction ( Figure 1 An opening 10 corresponding to the blanking channel is provided on one side of the mold assembly 1 (shown in the Y direction). The rotary base 20 is provided in the blanking channel, and the top connecting section 200 and the bottom connecting section 202 are both connected and fixed to the lower mold assembly 1. The first direction, the second direction and the third direction are perpendicular to each other.

[0027] For example, the rotary base 20 is arranged in the blanking channel, and the top connecting section 200 and the bottom connecting section 202 are fixedly connected to the lower die set 1, so as to realize the organic combination of the rotary die set 2 and the blanking channel. This integrated design not only improves the overall stability of the mold, but also reduces the need for external transmission devices.

[0028] In some embodiments, reference Figures 1 to 3 The rotary module 2 further includes an inner positioning assembly, which includes a positioning column 40, which extends along the second direction and is disposed on the inner side of the rotary base 20. The positioning column 40 is radially spaced from the rotary base 20 and is used to enclose an annular section 45 with the rotary base 20, which is radially perpendicular to the second direction.

[0029] For example, by providing an inner positioning assembly, the positioning column 40 is radially spaced from the slewing base 20 to form an annular section 45, which can achieve high-precision positioning of the stamping part. This design can effectively reduce dimensional deviation and scrap rate caused by inaccurate positioning during the stamping process.

[0030] In some embodiments, reference Figures 1 to 3The annular zone 45 is equally divided into a first stamping zone, a second empty zone, a third empty zone and a fourth empty zone along the circumferential direction. The first stamping zone and the third empty zone are arranged on both sides of the positioning column 40 along the first direction, and the second empty zone and the fourth empty zone are arranged on both sides of the positioning column 40 along the third direction. The first stamping zone is close to the side of the forming station.

[0031] In some embodiments, reference Figures 1 to 3 The inner positioning assembly further includes a shaft 41, a fixing plate 42, a first mounting side plate 43, and a second mounting side plate 44. The first mounting side plate 43 and the second mounting side plate 44 are arranged on the side of the rotary base 20 away from the molding station along the first direction, and are both mounted on both ends of the lower mold assembly 1 along the third direction. One end of the fixing plate 42 along the first direction is connected to the first mounting side plate 43 and the second mounting side plate 44 respectively, and the other end is arranged corresponding to the positioning column 40 along the second direction. The shaft 41 extends along the second direction, the top is connected to the fixing plate 42, and the bottom is connected to the positioning column 40.

[0032] Exemplarily, a stable supporting structure is formed by the combination of the shaft 41, the fixing plate 42, the connecting plate and the first and second mounting side plates 44. The positioning column 40 can evenly withstand the punching force, reducing local stress concentration and ensuring the accuracy and stability of the mold.

[0033] In some embodiments, reference Figures 1 to 3 The rotary module 2 also includes a fixed seat 21, a driving motor 22, a driving gear 23 and a single-sided toothed synchronous belt. The fixed seat 21 is arranged on the same side as the opening 10 and is arranged above the opening 10, and includes a mounting through hole extending along the second direction. The driving gear 23 is arranged below the fixed seat 21 and is arranged corresponding to the driven tooth surface 203 along the third direction. The driving motor 22 is fixed to the top of the fixed seat 21, and the motor driving end at the bottom thereof is penetrated by a mounting through hole along the second direction to connect with the driving gear 23. The single-sided toothed synchronous belt is sequentially wound around the driving gear 23 and the driven tooth surface 203, and is used to drive the driving gear 23 to rotate through the driving motor 22, so as to drive the rotating section 201 to rotate.

[0034] Exemplarily, the fixing seat 21 is arranged on the same side as the opening 10 and is connected to the driving motor 22 through a mounting through hole, so that the structure of the entire module is more compact. A single-sided toothed synchronous belt is used to connect the driving gear 23 and the driven tooth surface 203. The driving motor 22 drives the driving gear 23 to rotate, thereby driving the rotating section 201 to rotate precisely, avoiding the tooth gap problem that may occur in traditional gear transmission and improving the stability and accuracy of the transmission.

[0035] In some embodiments, reference Figures 1 to 3The rotary module also includes a loading circular frame 50 and a lifting rotary cylinder 51. The loading circular frame 50 has an opening at the top and is arranged corresponding to the rotating section along the second direction. The side wall of the loading circular frame 50 is provided with a spiral protrusion, and the bottom of the rotating section is provided with a spiral groove matching the size of the spiral protrusion along the circumferential direction, which is used to be tightened and fixed by the spiral protrusion and the spiral groove, so as to carry the semi-finished stator through the loading circular frame 50. The lifting and rotating cylinder 51 is arranged at the bottom of the lower mold group, and the rotating driving end 52 at the top thereof is penetrated through the lower mold group and is arranged corresponding to the loading circular frame 50 along the second direction; a positioning groove 54 is provided at the bottom of the loading circular frame 50, and a positioning block 53 is provided correspondingly at the top of the rotating driving end 52, which is used to be clamped and fixed with the positioning groove 54, so as to drive the loading circular frame 50 to rotate and move along the second direction through the lifting and rotating cylinder 51.

[0036] Exemplarily, the loading circular frame 50 is screwed and fixed by means of a spiral protrusion and a spiral groove at the bottom of the rotating section 201, so that the loading circular frame 50 can rotate synchronously with the rotating section 201 to carry and splice four semi-finished stators and continue to stack them. At the same time, after the loading circular frame 50 is full, the rotating drive end 52 of the lifting rotating cylinder 51 rotates upward until the positioning block 53 is engaged and fixed with the positioning groove 54, and then the rotating drive end 52 rotates downward to rotate the loading circular frame 50 out and separate it from the rotating base, so as to carry out the subsequent transportation of the semi-finished stators.

[0037] In some embodiments, reference Figures 1 to 3 An encoder 24 is provided on one side of the driving motor 22 along the third direction, which is used to measure the angle and direction of rotation of the driving motor 22 through the encoder 24, so that the driving motor 22 drives the rotating section 201 to rotate 90° to reach the next sub-stamping area.

[0038] For example, an encoder 24 is added to the drive motor 22, and the encoder 24 feeds back position information, combined with a control algorithm such as a PID control algorithm, to achieve precise position control, thereby ensuring that the drive motor 22 rotates 90 degrees each time. In addition, the encoder 24 can directly output the absolute position information of the motor, so that the mechanical zero point of the drive motor 22 can be set, so that the loading circular frame can accurately rotate in the first stamping area, the second empty area, the third empty area, and the fourth empty area in sequence.

[0039] In some embodiments, reference Figures 1 to 3 The stamping station includes an arc punch 3, which is matched with the first stamping area in size and arranged in a corresponding position along the second direction. The arc punch 3 extends along the second direction, and the top is connected to the upper die set 11, which is used to drive the arc punch 3 to press down through the upper die set 11, so as to punch the semi-finished stator located above the first stamping area along the first stamping area into the loading circular frame.

[0040] Illustratively, the arc-shaped punch 3 matches the size of the first stamping area and is correspondingly arranged in position, which can achieve high-precision positioning and stamping operations, ensure the accurate forming of the semi-finished stator during the stamping process, and reduce dimensional deviations caused by inaccurate positioning.

[0041] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor stator stamping die, characterized in that: It includes a material belt transmission channel, an upper die set and a lower die set, wherein: The material strip transmission channel extends along a first direction and is used to transmit the material strip. The upper die set and the lower die set are arranged in parallel on both sides of the material strip transmission channel along a second direction. A plurality of forming stations and stamping stations are arranged in sequence between the upper die set and the lower die set along the material strip transmission direction. The forming station is used to cut and punch holes in the material strip to form a semi-finished stator, which is 1 / 4 of the finished stator in the circumferential direction. The stamping station is used to press the semi-finished stator out of the material strip along the second direction. The stamping station includes a rotary die set. The upper die set and the lower die set are not stamped together once. The rotary die set rotates 90° along the circumferential direction to splice four semi-finished stators into a finished stator. The first direction is perpendicular to the second direction.

2. The motor stator stamping die according to claim 1, characterized in that: The rotating module includes a rotating base, which is a circular cylinder extending along the second direction, including a top connecting section, a rotating section and a bottom connecting section, the top connecting section and the bottom connecting section are sleeved on the upper and lower ends of the rotating section and are rotatably connected to the rotating section; the rotating section can rotate along the circumferential direction, and the outer surface is provided with a driven tooth surface along the circumferential direction, and the circumference surrounds the second direction.

3. The motor stator stamping die according to claim 2, characterized in that: The lower die assembly is provided with a blanking channel extending along the second direction at the stamping station, and the lower die assembly is provided with an opening corresponding to the blanking channel on one side along the third direction; the rotating base is arranged in the blanking channel, and the top connecting section and the bottom connecting section are both connected and fixed to the lower die assembly; the first direction, the second direction and the third direction are perpendicular to each other.

4. The motor stator stamping die according to claim 2, characterized in that: The rotating module also includes an inner positioning component, which includes a positioning column. The positioning column extends along the second direction and is arranged on the inner side of the rotating base. The positioning column is radially spaced from the rotating base and is used to form an annular interval with the rotating base, and the radial direction is perpendicular to the second direction.

5. The motor stator stamping die according to claim 4, characterized in that: The annular area is equally divided into a first stamping area, a second unloaded area, a third unloaded area and a fourth unloaded area along the circumferential direction; the first stamping area and the third unloaded area are arranged on both sides of the positioning column along the first direction, and the second unloaded area and the fourth unloaded area are arranged on both sides of the positioning column along the third direction; the first stamping area is close to the side of the forming station.

6. The motor stator stamping die according to claim 4, characterized in that: The inner positioning assembly also includes a shaft, a fixed plate, a first mounting side plate, and a second mounting side plate; the first mounting side plate and the second mounting side plate are arranged on a side of the rotating base away from the forming station along the first direction, and are both mounted on both ends of the lower mold group along the third direction; one end of the fixed plate along the first direction is respectively connected to the first mounting side plate and the second mounting side plate, and the other end is arranged corresponding to the positioning column along the second direction; the shaft extends along the second direction, the top is connected to the fixed plate, and the bottom is connected to the positioning column.

7. The motor stator stamping die according to claim 2, characterized in that: The rotary module also includes a fixing seat, a driving motor, a driving gear and a single-sided toothed synchronous belt, wherein the fixing seat is arranged on the same side as the opening and above the opening, and includes a mounting through hole extending along the second direction; The driving gear is arranged below the fixing seat and is arranged corresponding to the driven tooth surface along the third direction; the driving motor is fixed to the top of the fixing seat, and the motor driving end at the bottom thereof passes through the mounting through hole along the second direction to be connected with the driving gear; the single-sided tooth synchronous belt is sequentially wound around the driving gear and the driven tooth surface, and is used to drive the driving gear to rotate through the driving motor, so as to drive the rotating section to rotate.

8. The motor stator stamping die according to claim 7, characterized in that: The rotary module also includes a loading circular frame and a lifting rotary cylinder. The loading circular frame is provided with an opening at the top and is arranged corresponding to the rotating section along the second direction. The side wall of the loading circular frame is provided with a spiral protrusion, and the bottom of the rotating section is provided with a spiral groove matching the size of the spiral protrusion along the circumferential direction, which is used to be tightened and fixed by the spiral protrusion and the spiral groove, so as to carry the semi-finished stator through the loading circular frame. The lifting and rotating cylinder is arranged at the bottom of the lower mold group, and the rotating driving end at the top thereof is passed through the lower mold group and is arranged corresponding to the loading circular frame along the second direction; a positioning groove is provided at the bottom of the loading circular frame, and a positioning block is provided corresponding to the top of the rotating driving end, which is used to be clamped and fixed with the positioning groove, so as to drive the loading circular frame to rotate and move along the second direction through the lifting and rotating cylinder.

9. The motor stator stamping die according to claim 8, characterized in that: The drive motor is provided with an encoder on one side along the third direction, which is used to measure the angle and direction of rotation of the drive motor through the encoder, so that the drive motor can drive the loading circular frame to rotate 90° at a fixed distance, and rotate the semi-finished stator located in the first stamping area to the second unloaded area, so that the first stamping area can continue to stamp and carry subsequent semi-finished stators.

10. The motor stator stamping die according to claim 9, characterized in that: The stamping station includes an arc-shaped punch, which is matched in size and corresponding in position to the first stamping area along the second direction; the arc-shaped punch extends along the second direction, and the top is connected to the upper die group, so as to drive the arc-shaped punch downward through the upper die group to punch the semi-finished stator located above the first stamping area along the first stamping area into the loading circular frame.

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