Stamping die for stator and rotor

Abstract

The utility model relates to a stator and rotor stamping die, and relates to the technical field of stamping dies, the stator and rotor stamping die comprises an upper die and a lower die which are matched with each other, and a rotor stamping assembly and a stator stamping assembly are sequentially arranged in the upper die and the lower die; the rotor stamping assembly and the stator stamping assembly are the same in structure and each comprise a blanking male die arranged on the upper die and a blanking female die arranged on the lower die, a rotary shaft sleeve is arranged below the blanking female die, a stacking cavity used for storing a stator or a rotor is formed in the middle of the rotary shaft sleeve, and the blanking female die is arranged on the upper portion in the stacking cavity. The rotary shaft sleeve is rotationally connected with the lower die, and a driving motor for driving the rotary shaft sleeve to rotate is arranged on one side of the lower die. The punching device has the advantages that the finished product quality of stators and rotors is improved, the punching forming precision is improved, the overall structure is compact, and operation is easy and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of stamping dies, and in particular to a stator and rotor stamping die. Background Art

[0002] The stator and rotor of the motor are formed by stacking a number of punching sheets, which are formed by stamping out plates. It is necessary to punch out plug-in bumps and plug-in grooves on the plates, punch out shaft holes, cut off gap excess material, and cut off the outer circle. The formed punching sheets are plugged and stacked through plug-in bumps and plug-in grooves. This process is completed manually, which is labor-intensive, inefficient, and costly.

[0003] With the rapid development of science and technology and economy, the application of high-speed stamping dies in the field of manufacturing motor stators and rotors has become more and more common. High-speed stamping dies have high production efficiency and stable product quality. Compared with manual production, they greatly reduce the workload of staff, liberate labor and reduce labor costs.

[0004] When the high-speed stamping die is stamping, the sheet enters the interior of the high-speed stamping die, and the high-speed stamping die stamps the sheet into a stator or rotor and stacks them together. However, when the thickness of the sheet is uneven, the thickness of the stamped stator or rotor is uneven. When multiple stator or rotor sheets are stacked, the heights on both sides of the stator or rotor will be different, affecting the production quality. Utility Model Content

[0005] In order to solve the problems in the prior art that the existing high-speed stamping dies have low stamping accuracy and the stamped stators or rotors have low quality, the present application provides a stator and rotor stamping die.

[0006] A stator rotor stamping die provided in the present application adopts the following technical solution: a stator rotor stamping die, comprising a matching upper die and a lower die, wherein a rotor stamping assembly and a stator stamping assembly are sequentially arranged inside the upper die and the lower die, wherein the rotor stamping assembly has the same structure as the stator stamping assembly and both comprise a blanking punch arranged on the upper die and a blanking die arranged on the lower die, wherein a rotary sleeve is arranged below the blanking die, wherein a stacking cavity for storing a stator or a rotor is opened in the middle of the rotary sleeve, wherein the blanking die is arranged above the inside of the stacking cavity, wherein the rotary sleeve is rotatably connected to the lower die, and a driving motor for driving the rotary sleeve to rotate is arranged on one side of the lower die.

[0007] Optionally, a detection pin is provided on one side of the blanking punch, and a detection hole matching with the detection pin is provided on the upper end surface of the rotary sleeve to detect whether the workpiece is in place to ensure the stamping accuracy.

[0008] Optionally, a support sleeve is provided on the outer side of the rotating sleeve, the support sleeve is fixedly connected to the lower mold, and a bearing is provided between the support sleeve and the rotating sleeve to reduce the friction between the support sleeve and the rotating sleeve and improve the stability of rotation.

[0009] Optionally, a driven wheel is provided on the fixed sleeve below the rotating sleeve, a driving wheel is provided on the output shaft of the driving motor, and the driving wheel is transmission-connected with the driven wheel to realize the rotational drive of the rotating sleeve.

[0010] Optionally, the driving motor adopts a servo motor to accurately control the angle and speed of rotation of the rotary sleeve.

[0011] Optionally, a buckle point ejector pin is arranged in the middle of the blanking punch so as to fix and buckle the two stators or rotors together through the buckle points.

[0012] Optionally, a feed guide plate is provided on the upper end surface of the lower die, and a positioning component for positioning the rotary sleeve is provided on one side of the feed guide plate to ensure accurate positioning of the rotary sleeve during the stamping process.

[0013] Optionally, the positioning assembly includes a positioning pin, a positioning block and a stop block are provided on the upper surface of the lower mold, the positioning pin is movably inserted into the positioning block and the stop block, a wedge-shaped groove is provided on the positioning pin at the connection with the positioning block, a locking pin matching the wedge-shaped groove is inserted in the vertical direction on one side of the positioning block, a retaining ring is provided on the outer side of the part of the positioning pin located between the positioning block and the stop block, a spring is provided between the retaining ring and the positioning block, and both ends of the spring are fixedly connected to the positioning block and the retaining ring respectively.

[0014] Optionally, at least one set of outer guide pillar assembly and inner guide pillar assembly is arranged between the upper die and the lower die to improve the stability and stamping accuracy of the upper die and the lower die during stamping.

[0015] Optionally, a locking ring for clamping and limiting the stator or the rotor is arranged inside the stacking cavity in the middle of the rotating sleeve to prevent the stator or the rotor from shifting in position during the stamping process.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] In the present application, a rotatable rotary sleeve is arranged inside the lower die, and during the stamping process, the rotary sleeve is driven by a driving motor to rotate the stator or rotor after the stamping to compensate for the thickness of the stator or rotor, so that the thickness of the stacked stator or rotor is uniform, thereby improving the finished product quality of the stator and rotor, improving the stamping accuracy, and the overall structure is compact and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a stator-rotor stamping die in an embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of a rotor stamping assembly of a stator rotor stamping die in an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of a stator stamping assembly of a stator rotor stamping die in an embodiment of the present application.

[0021] Figure 4 It is a schematic diagram of the rotating shaft sleeve structure of a stator rotor stamping die in an embodiment of the present application.

[0022] Figure 5 It is a schematic diagram of the structure of a positioning component of a stator-rotor stamping die in an embodiment of the present application.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. upper die; 2. lower die; 3. rotor stamping assembly; 4. stator stamping assembly; 5. blanking punch; 6. upper cover plate; 7. detection pin; 8. feed guide plate; 9. support sleeve; 10. rotary shaft sleeve; 11. driven wheel; 12. outer guide column assembly; 13. inner guide column assembly; 14. drive motor; 15. driving wheel; 16. positioning assembly; 17. buckle point ejector pin; 18. stacking cavity; 19. detection hole; 20. positioning hole; 21. bayonet pin; 22. retaining ring; 23. wedge groove; 24. positioning pin; 25. positioning block; 26. stopper; 27. blanking die. DETAILED DESCRIPTION

[0024] The following is an explanation of the implementation of the present application by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0025] See also Figure 1-5 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions for the implementation of this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0026] The following is combined with Figure 1-5 This application is described in further detail.

[0027] This embodiment discloses a stator rotor stamping die.

[0028] Reference Figure 1 A stator rotor stamping die comprises a matching upper die 1 and a lower die 2, an upper cover plate 6 is arranged below the upper die 1, a feed guide plate 8 is arranged on the upper surface of the lower die 2, a rotor stamping assembly 3 and a stator stamping assembly 4 are arranged in sequence along the length direction of the upper die 1 and the lower die 2, during the stamping process, the workpiece is arranged between the upper cover plate 6 and the feed guide plate 8, the workpiece moves along the length direction of the upper die 1 and the lower die 2 and passes through the rotor stamping assembly 3 and the stator stamping assembly 4 in sequence, first enters the rotor stamping assembly 3 to stamp a smaller rotor and then enters the stator stamping assembly 4 to stamp a larger stator.

[0029] Reference Figure 2 and Figure 4 The rotor stamping assembly 3 includes a rotor blanking punch arranged on the upper die 1, the rotor blanking punch penetrates the upper cover plate 6, a rotor blanking die is arranged on the lower die 2 corresponding to the rotor blanking punch, the rotor blanking die is arranged inside the rotor rotating shaft sleeve, a stacking cavity 18 for accommodating the rotor is opened inside the rotor rotating shaft sleeve, a rotor locking ring inside the stacking cavity 18, a support sleeve 9 is arranged on the outer side of the upper rotor rotating shaft sleeve, the support sleeve 9 is fixedly connected to the lower die 2, a rotary bearing and a plane bearing are arranged between the rotor rotating shaft sleeve and the support sleeve 9, a driven wheel 11 is arranged on the outer fixed sleeve at the bottom of the rotor rotating shaft sleeve, a driving motor 14 is arranged on one side of the lower die 2, a driving wheel 15 is connected to the output shaft of the driving motor 14, and the driving wheel 15 is connected to the driven wheel 11 through a gear transmission or a belt transmission. A detection pin 7 is arranged on one side of the rotor blanking punch, and the rotor rotating shaft sleeve A detection hole 19 is provided on the upper end surface corresponding to the detection pin 7. When the rotor is stamped, the workpiece enters between the rotor blanking punch and the rotor blanking die, the upper die 1 moves downward, and the rotor blanking punch and the detection pin 7 move downward driven by the upper die 1. If the detection pin 7 is blocked by the workpiece, it means that the workpiece has been moved into place for stamping. If the detection pin 7 enters the inside of the detection hole 19, it means that the workpiece has not been delivered into place and the stamping is stopped. During stamping, the rotor blanking punch cooperates with the rotor blanking die to stamp out the rotor on the workpiece, and the rotor falls into the stacking cavity 18 in the rotor rotating shaft sleeve 10. When stamping is performed again, the driving motor 14 drives the rotor rotating shaft sleeve 10 to rotate a set angle through the driving wheel 15 and the driven wheel 11, and then the upper die 1 and the lower die 2 are stamped again. The thicknesses between the two adjacent rotors compensate each other, so that the overall thickness of the stacked rotor is uniform.

[0030] Reference Figure 3 and Figure 4The stator stamping assembly 4 includes a stator blanking punch arranged on the upper die 1, a buckle point ejector 17 is arranged in the middle of the stator blanking punch, the stator blanking punch passes through the upper cover plate 6, and a stator blanking die is arranged on the lower die 2 corresponding to the stator blanking punch. The stator blanking die is arranged inside the stator rotating shaft sleeve, and a stacking cavity 18 for accommodating the stator is opened inside the stator rotating shaft sleeve, and a stator locking ring inside the stacking cavity 18 is arranged. A support sleeve 9 is sleeved on the upper outer side of the stator rotating shaft sleeve, and the support sleeve 9 and the stator rotating shaft sleeve are connected. The lower die 2 is fixedly connected, a rotary bearing and a plane bearing are arranged between the stator rotary shaft sleeve and the support sleeve 9, a driven wheel 11 is arranged on the fixed sleeve on the outer side of the bottom of the stator rotary shaft sleeve, a driving motor 14 is arranged on one side of the lower die 2, a driving wheel 15 is connected to the output shaft of the driving motor 14, and the driving wheel 15 is connected to the driven wheel 11 through a transmission connection in a gear transmission or a belt transmission, a detection pin 7 is arranged on one side of the stator blanking punch, and a detection hole 19 is arranged on the upper end surface of the stator rotary shaft sleeve corresponding to the detection pin 7. When the stator is stamped, the workpiece enters between the stator blanking punch and the stator blanking die, the upper die 1 moves downward, and the stator blanking punch and the detection pin 7 move downward under the drive of the upper die 1. If the detection pin 7 is blocked by the workpiece, it means that the workpiece is in place for stamping. If the detection pin 7 enters the inside of the detection hole 19, it means that the workpiece is not delivered in place and the stamping is stopped. During stamping, the stator blanking punch and the stator blanking die cooperate to stamp out the stator on the workpiece. The stator falls into the stacking cavity 18 in the stator rotating shaft sleeve 10, and the buckle point ejector 17 in the middle of the stator blanking punch presses the stator buckle point to buckle the two adjacent stators through the buckle point. When stamping again, the driving motor 14 drives the stator rotating shaft sleeve 10 to rotate a set angle through the driving wheel 15 and the driven wheel 11, and then the upper mold 1 and the lower mold 2 are stamped again. The thicknesses between the two adjacent stators compensate each other, so that the overall thickness of the stacked stator is uniform.

[0031] Reference Figure 3 , Figure 4 and Figure 5A positioning assembly 16 is arranged on one side of the stator stamping assembly 4. The positioning assembly 16 includes a positioning pin 24. The positioning pin 24 penetrates the feed guide plate 8 and extends to one side of the stator rotating shaft sleeve. A plurality of positioning holes 20 matching the positioning pin 24 are arranged on the side of the stator rotating shaft sleeve. A positioning block 25 and a stopper 26 are arranged on the upper surface of the lower die 2. The positioning pin 24 is movably inserted inside the positioning block 25 and the stopper 26. A wedge-shaped groove 23 is arranged at the connection between the positioning pin 24 and the positioning block 25. A bayonet 21 matching the wedge-shaped groove 23 is inserted on one side of the positioning block 25 in the vertical direction. A spring for resetting the bayonet 21 is arranged between the bayonet 21 and the positioning block 25. A retaining ring 22 is arranged on the outer side of the portion of the positioning pin 24 between the positioning block 25 and the stopper 26. A spring is arranged between the retaining ring 22 and the positioning block 25. The two ends of the spring are fixedly connected to the positioning block 25 and the retaining ring 22 respectively. When the stator is stamped, the driving motor 14 drives the stator rotating sleeve to rotate a set angle. When the stator rotating sleeve is rotated into place, the upper mold 1 moves downward, and the upper mold 1 presses the bayonet 21 downward. The bayonet 21 disengages from the wedge-shaped groove 23 on the positioning pin 24. The positioning pin 24 moves axially toward one side of the stator rotating sleeve under the action of the spring. The end of the positioning pin 24 enters the positioning hole 20 on the side of the stator rotating sleeve. The positioning pin 24 positions the stator rotating sleeve to prevent the stator rotating sleeve from shifting in position during the stamping process. When the stamping is completed, the upper mold 1 moves upward, and the bayonet 21 moves upward and resets, and drives the positioning pin 24 to move in the opposite direction through the wedge-shaped groove 23 to reset. The positioning pin 24 disengages from the positioning hole 20, and the stator rotating sleeve can rotate freely.

[0032] Reference Figure 2 and Figure 3 A plurality of outer guide pillar assemblies 12 and inner guide pillar assemblies 13 are arranged between the upper die 1 and the lower die 2. When stamping, the outer guide pillar assemblies 12 and the inner guide pillar assemblies 13 guide the upper die 1 to improve the stability of the movement of the upper die 1 and thus improve the stamping accuracy.

[0033] In summary, in the present application, a rotatable rotary sleeve is arranged inside the lower die, and during the stamping process, the rotary sleeve is driven by a driving motor to rotate to rotate the stator or rotor after stamping to compensate for the thickness of the stator or rotor, so that the thickness of the stacked stator or rotor is uniform, the quality of the finished product of the stator and rotor is improved, the stamping precision is improved, and the overall structure is compact and easy to operate. Therefore, the present application effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0034] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present application shall still be included in the protection scope of the present application.

Claims

1. A stator rotor stamping die, comprising an upper die (1) and a lower die (2) that match each other, wherein a rotor stamping component (3) and a stator stamping component (4) are sequentially arranged inside the upper die (1) and the lower die (2), characterized in that: The rotor stamping assembly (3) and the stator stamping assembly (4) have the same structure and both include a blanking punch (5) arranged on the upper die (1) and a blanking die (27) arranged on the lower die (2); a rotary sleeve (10) is arranged below the blanking die (27); a stacking cavity (18) for storing a stator or a rotor is provided in the middle of the rotary sleeve (10); the blanking die (27) is arranged above the inside of the stacking cavity (18); the rotary sleeve (10) is rotatably connected to the lower die (2); and a driving motor (14) for driving the rotary sleeve (10) to rotate is arranged on one side of the lower die (2).

2. A stator rotor stamping die according to claim 1, characterized in that: A detection pin (7) is provided on one side of the blanking punch (5), and a detection hole (19) matching with the detection pin (7) is provided on the upper end surface of the rotary shaft sleeve (10).

3. The stator rotor stamping die according to claim 1, characterized in that: A support sleeve (9) is provided on the outer side of the upper side of the rotary sleeve (10); the support sleeve (9) is fixedly connected to the lower die (2); and a bearing is provided between the support sleeve (9) and the rotary sleeve (10).

4. The stator rotor stamping die according to claim 1, characterized in that: A driven wheel (11) is disposed on the fixed sleeve below the rotary sleeve (10), and a driving wheel (15) is disposed on the output shaft of the drive motor (14), wherein the driving wheel (15) is drivingly connected to the driven wheel (11).

5. The stator rotor stamping die according to claim 4, characterized in that: The driving motor (14) is a servo motor.

6. The stator rotor stamping die according to claim 1, characterized in that: A buckling point ejector pin (17) is arranged in the middle of the blanking punch (5).

7. The stator rotor stamping die according to claim 1, characterized in that: A feed guide plate (8) is provided on the upper end surface of the lower die (2), and a positioning component (16) for positioning the rotary shaft sleeve (10) is provided on one side of the feed guide plate (8).

8. The stator rotor stamping die according to claim 7, characterized in that: The positioning assembly (16) comprises a positioning pin (24), a positioning block (25) and a stopper (26) are arranged on the upper surface of the lower mold (2), the positioning pin (24) is movably inserted inside the positioning block (25) and the stopper (26), a wedge-shaped groove (23) is arranged on the connection between the positioning pin (24) and the positioning block (25), a latching pin (21) matching the wedge-shaped groove (23) is inserted in the vertical direction on one side of the positioning block (25), a retaining ring (22) is arranged on the outer side of the portion of the positioning pin (24) located between the positioning block (25) and the stopper (26), a spring is arranged between the retaining ring (22) and the positioning block (25), and two ends of the spring are respectively fixedly connected to the positioning block (25) and the retaining ring (22).

9. The stator rotor stamping die according to claim 1, characterized in that: At least one set of outer guide pillar assembly (12) and inner guide pillar assembly (13) is arranged between the upper die (1) and the lower die (2).

10. The stator rotor stamping die according to claim 1, characterized in that: A locking ring for clamping and limiting the stator or the rotor is arranged inside the stacking cavity (18) in the middle of the rotary shaft sleeve (10).

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