Rotary stamping die of motor iron core

Abstract

The utility model relates to the field of motor iron cores, and discloses a rotary stamping die of a motor iron core, which comprises a lower die and an upper die, the lower die is arranged below the upper die, a rotating body is movably assembled at the middle position in the lower die, an iron core piece is embedded at the top end of the rotating body, and the bottom end of the rotating body is fixedly connected to a transmission wheel in the lower die. The right side of the outer wall of the lower die is fixedly connected with a servo motor, and an output shaft of the servo motor is fixedly sleeved with a driving wheel. According to the rotary stamping die for the motor iron core, the servo motor is arranged, when stamping is conducted every time, the servo motor drives the driving wheel to rotate by 90 degrees, and therefore torque is transmitted to the transmission wheel through the transmission belt, the rotating body and the iron core piece above are driven to rotate by 90 degrees, the upper die is continuously opened and closed for three times, stamping of the iron core piece is completed, and the stamping efficiency is improved through rotary stamping. Accuracy deviation caused by non-uniform thickness of the material of the iron core piece can be avoided, the final performance of the motor is improved, and the problem of accuracy deviation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor iron cores, in particular to a rotary stamping die for motor iron cores. Background Art

[0002] The motor core is one of the core components of the motor. Stamping is typically used, where the core material is repeatedly pressed through a die to create the desired shape. Traditionally, the core material is typically silicon steel sheets. However, this process requires a high degree of uniformity in the core thickness, otherwise it can affect the motor's ultimate performance.

[0003] Currently, the most common motor core stamping dies on the market typically use a straight-up punching method. Due to the thickness variations of silicon steel coils during production, the uneven thickness of dozens of core sheets becomes more pronounced. Because the core does not rotate, the pressure distribution during the stamping process is uneven, which can easily lead to errors in the shape and size of the core pieces, affecting the motor's operating stability and performance.

[0004] Therefore, a rotary stamping die for a motor core is needed to solve the above technical defects. Utility Model Content

[0005] The purpose of the present utility model is to provide a rotary stamping die for a motor core, so as to solve the problem of accuracy deviation mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary stamping die for a motor core, comprising a lower die and an upper die, a lower die being arranged below the upper die, a rotating body being movably assembled in the middle position of the lower die, an iron core piece being embedded in the top of the rotating body, the bottom end of the rotating body being fixedly connected to a transmission wheel inside the lower die, a servo motor being fixedly connected to the right side of the outer wall of the lower die, a drive wheel being fixedly sleeved on the output shaft of the servo motor, a transmission belt being connected between the drive wheel and the transmission wheel, and a boss being installed at the bottom end of the upper die.

[0007] Preferably, each time the servo motor rotates 90°, the protrusion matches the iron core piece.

[0008] Preferably, a suction cylinder is fixedly connected to the left side of the outer wall of the upper mold, a pumping plate groove is opened on the left side of the inner side of the upper mold, a piston rod is provided at the output end of the suction cylinder, a pumping plate is fixedly connected to the right side of the piston rod, the pumping plate moves in the pumping plate groove, and a sleeve is provided on the left side of the top end of the lower mold, and the sleeve extends outward and is connected to the micro switch.

[0009] Preferably, a groove is provided at the bottom end of the draw plate, a spring sleeve rod is embedded at the bottom end of the groove, a detection needle is fixedly connected to the bottom end of the spring sleeve rod, and the position of the bottom end of the detection needle matches the insert sleeve.

[0010] Preferably, the front and rear ends of the rotating body are both provided with clamping cylinders, the clamping cylinders are fixed to the front and rear ends of the lower mold, the output ends of the clamping cylinders are fixedly connected to clamping plates, and the clamping plates match the shape of the rotating body.

[0011] Preferably, two groups of the clamping cylinders are provided, and the clamping cylinders are connected to the clamping plates by bolts.

[0012] Preferably, side grooves are respectively opened on both sides of the bottom end of the upper mold, and inclined rods are fixed in the side grooves. Spring grooves are respectively opened on both sides of the top end of the lower mold, and springs are fixedly connected to the inner walls of the spring grooves. The springs are fixedly connected to the clamping blocks, and the clamping blocks are symmetrically distributed about the center point of the iron core piece.

[0013] Preferably, the oblique rod is arranged obliquely, and when the upper mold and the lower mold are closed, the oblique rod and the clamping block are in conflict.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the rotary stamping die for the motor iron core not only realizes rotary stamping, avoids the accuracy deviation caused by the uneven thickness of the iron core material, improves the final performance of the motor, realizes the closing accuracy detection before stamping, protects the die, but also realizes automatic positioning and clamping;

[0015] (1) A servo motor, a driving wheel, a rotating body, a transmission belt, and a transmission wheel are provided, and a rotating body is installed at the lower die of the mold. During stamping, each time a stamping is performed, the driving wheel is driven by the servo motor to rotate 90 degrees, thereby transmitting torque to the transmission wheel through the transmission belt, driving the rotating body and the upper core member to rotate 90 degrees. The upper mold is opened and closed three times in succession to complete the punching of the core member. Through rotary stamping, the accuracy deviation of the core member due to uneven thickness can be avoided, thereby improving the final performance of the motor;

[0016] (2) The mold is provided with a pulling cylinder, a piston rod, a draw plate, a detection needle, a sleeve, a micro switch, a spring sleeve rod, and a groove. The mold is provided with a pulling cylinder on one side of the upper mold. When the upper mold is closed, the piston rod pulls the draw plate outward, causing the detection needle to be dislocated from the bottom of the groove. Due to the dislocation and squeezing of the draw plate, the detection needle is pressed down and contacts the sleeve. If the upper mold and the lower mold are closed in place, stamping can be carried out. If the upper mold and the lower mold are not closed in place, the detection needle cannot accurately contact the sleeve, the micro switch will alarm, and the stamping will stop immediately to protect the mold. By providing a spring sleeve rod on the detection needle, the detection needle can automatically rebound upward when the mold is opened;

[0017] (3) By arranging the inclined rod, the clamping block, the clamping cylinder, the inclined rod and the spring, when the upper die and the lower die are closed, the inclined rods on both sides of the bottom of the upper die will contact the clamping block during the pressing process of the upper die, and push the clamping block to clamp the iron core piece horizontally, while the clamping cylinders at both ends drive the clamping plate to clamp the rotating body, thereby clamping the iron core piece to prevent it from deflecting during stamping. When the upper die rises to open the die, the inclined rod rises, and the clamping block moves outward under the rebound action of the spring to release the clamping, thereby realizing automatic positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the clamping cylinder of the present utility model;

[0020] Figure 3 This is a side view of the structure of the insert sleeve of the present invention;

[0021] Figure 4 This is a schematic diagram of the front view structure of the detection needle of the present utility model.

[0022] In the figure: 1. Upper die; 2. Plate drawer groove; 3. Plate drawer; 4. Groove; 5. Piston rod; 6. Drawing cylinder; 7. Side groove; 8. Inclined rod; 9. Protruding head; 10. Core piece; 11. Clamping block; 12. Spring groove; 13. Spring; 14. Servo motor; 15. Driving wheel; 16. Transmission belt; 17. Transmission wheel; 18. Clamping cylinder; 19. Rotating body; 20. Insert; 21. Detection needle; 22. Lower die; 23. Clamping plate; 24. Micro switch; 25. Spring sleeve rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4The utility model provides an embodiment: a rotary stamping die for a motor core, comprising a lower die 22 and an upper die 1, wherein the lower die 22 is provided below the upper die 1, a rotating body 19 is movably assembled in the middle position of the lower die 22, an iron core piece 10 is embedded in the top of the rotating body 19, the bottom end of the rotating body 19 is fixedly connected to the transmission wheel 17 inside the lower die 22, a servo motor 14 is fixedly connected to the right side of the outer wall of the lower die 22, the output shaft of the servo motor 14 is fixedly sleeved with a driving wheel 15, a transmission belt 16 is connected between the driving wheel 15 and the transmission wheel 17, a convex head 9 is installed at the bottom end of the upper die 1, and the servo motor 14 rotates 90 degrees each time, and the convex head 9 matches the iron core piece 10;

[0025] Specifically, if Figure 1 As shown, the mold is equipped with a rotating body 19 at the lower mold 22. During stamping, the servo motor 14 drives the driving wheel 15 to rotate 90° each time the stamping is performed, thereby transmitting torque to the driving wheel 17 through the transmission belt 16, driving the rotating body 19 and the upper core member 10 to rotate 90°. The upper mold 1 opens and closes three times in succession to complete the punching of the core member 10. Through rotary stamping, the accuracy deviation caused by the uneven thickness of the material of the core member 10 can be avoided, thereby improving the final performance of the motor.

[0026] A suction cylinder 6 is fixedly connected to the left side of the outer wall of the upper mold 1, and a pumping plate groove 2 is opened on the left side of the upper mold 1. A piston rod 5 is provided at the output end of the suction cylinder 6, and a pumping plate 3 is fixedly connected to the right side of the piston rod 5. The pumping plate 3 moves in the pumping plate groove 2. A sleeve 20 is provided on the left side of the top of the lower mold 22. The sleeve 20 extends outward and is connected to the micro switch 24. A groove 4 is opened at the bottom end of the pumping plate 3. A spring sleeve rod 25 is embedded at the bottom end of the groove 4. A detection needle 21 is fixedly connected to the bottom end of the spring sleeve rod 25. The bottom end position of the detection needle 21 matches the sleeve 20.

[0027] Specifically, if Figure 1 、 Figure 3 and Figure 4 As shown, the mold is provided with a suction cylinder 6 on one side of the upper mold 1. When the upper mold 1 is closed, the piston rod 5 pulls the drawer plate 3 outward, causing the detection needle 21 to be dislocated from the bottom of the groove 4. Due to the dislocation and extrusion of the drawer plate 3, the detection needle 21 will be pressed down and contact the sleeve 20. If the upper mold 1 and the lower mold 22 are closed in place, stamping can be carried out. If the upper mold 1 and the lower mold 22 are not closed in place, the detection needle 21 cannot accurately contact the sleeve 20, the micro switch 24 will alarm, and the stamping will be stopped immediately to protect the mold.

[0028] The front and rear ends of the rotating body 19 are both provided with a clamping cylinder 18, which is fixed to the front and rear ends of the lower die 22. The output end of the clamping cylinder 18 is fixedly connected to a clamping plate 23, which matches the shape of the rotating body 19. The clamping cylinder 18 is provided with two groups, and the clamping cylinder 18 and the clamping plate 23 are connected by bolts. Side grooves 7 are respectively provided on both sides of the bottom end of the upper die 1, and an inclined rod 8 is fixed in the side groove 7. Spring grooves 12 are respectively provided on both sides of the top end of the lower die 22, and a spring 13 is fixedly connected to the inner wall of the spring groove 12. The spring 13 is fixedly connected to the clamping block 11. The clamping block 11 is symmetrically distributed about the center point of the iron core member 10, and the inclined rod 8 is tilted. When the upper die 1 and the lower die 22 are closed, the inclined rod 8 and the clamping block 11 conflict;

[0029] Specifically, if Figure 1 and Figure 2 As shown, when the upper mold 1 and the lower mold 22 are closed, the inclined rods 8 on both sides of the bottom of the upper mold 1 will come into contact with the clamping block 11 during the downward pressing process of the upper mold 1, and push the clamping block 11 to horizontally clamp the iron core member 10, while the clamping cylinders 18 at both ends drive the clamping plates 23 to clamp the rotating body 19, thereby clamping the iron core member 10 during stamping to prevent it from shifting. When the upper mold 1 rises to open the mold, the inclined rods 8 rise back, and the clamping block 11 moves outward under the rebound action of the spring 13 to release the clamping.

[0030] Working principle: When the upper die 1 and the lower die 22 are closed, the inclined rods 8 on both sides of the bottom of the upper die 1 will conflict with the clamping block 11 during the downward pressing process of the upper die 1, and push the clamping block 11 to clamp the iron core member 10 horizontally, while the clamping cylinders 18 at both ends drive the clamping plates 23 to clamp the rotating body 19, thereby clamping the iron core member 10 to prevent it from deflecting during stamping. The mold is provided with a suction cylinder 6 on one side of the upper die 1. When the upper die 1 is closed, the piston rod 5 pulls the draw plate 3 outward, causing the detection needle 21 to be dislocated from the bottom of the groove 4. Due to the dislocation and extrusion of the draw plate 3, the detection needle 21 is pressed down to contact the insert 20. If the upper die 1 and the lower die 22 are closed to If the upper die 1 and the lower die 22 are not closed in place, the detection needle 21 cannot accurately contact the sleeve 20, the micro switch 24 will alarm, and the stamping will be stopped immediately to protect the mold. During stamping, each time the stamping is performed, the servo motor 14 drives the drive wheel 15 to rotate 90°, thereby transmitting torque to the drive wheel 17 through the transmission belt 16, driving the rotating body 19 and the upper core member 10 to rotate 90°. The upper die 1 opens and closes three times in succession to complete the punching of the core member 10. Through rotary stamping, the accuracy deviation caused by the uneven thickness of the material of the core member 10 can be avoided, thereby improving the final performance of the motor.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A rotary stamping die for a motor core, comprising a lower die (22) and an upper die (1), characterized in that: A lower die (22) is provided below the upper die (1), a rotating body (19) is movably mounted in the middle position of the lower die (22), an iron core piece (10) is embedded in the top of the rotating body (19), the bottom end of the rotating body (19) is fixedly connected to the transmission wheel (17) inside the lower die (22), a servo motor (14) is fixedly connected to the right side of the outer wall of the lower die (22), the output shaft of the servo motor (14) is fixedly sleeved with a driving wheel (15), a transmission belt (16) is connected between the driving wheel (15) and the transmission wheel (17), and a convex head (9) is installed at the bottom end of the upper die (1).

2. The rotary stamping die for a motor core according to claim 1, characterized in that: Each time the servo motor (14) rotates 90°, the protrusion (9) matches the iron core (10).

3. The rotary stamping die for a motor core according to claim 1, characterized in that: A suction cylinder (6) is fixedly connected to the left side of the outer wall of the upper mold (1), a plate extraction groove (2) is opened on the left side inside the upper mold (1), a piston rod (5) is provided at the output end of the suction cylinder (6), a plate extraction plate (3) is fixedly connected to the right side of the piston rod (5), and the plate extraction plate (3) moves in the plate extraction groove (2), and a sleeve (20) is provided on the left side of the top end of the lower mold (22), and the sleeve (20) extends outward and is connected to a micro switch (24).

4. The rotary stamping die for a motor core according to claim 3, characterized in that: The bottom end of the draw plate (3) is provided with a groove (4), the bottom end of the groove (4) is embedded with a spring sleeve rod (25), the bottom end of the spring sleeve rod (25) is fixedly connected with a detection needle (21), and the bottom end position of the detection needle (21) matches the insert sleeve (20).

5. The rotary stamping die for a motor core according to claim 1, characterized in that: The front and rear ends of the rotating body (19) are both provided with clamping cylinders (18), and the clamping cylinders (18) are fixed to the front and rear ends of the lower mold (22). The output end of the clamping cylinder (18) is fixedly connected with a clamping plate (23), and the clamping plate (23) is in conformity with the shape of the rotating body (19).

6. The rotary stamping die for a motor core according to claim 5, characterized in that: The clamping cylinders (18) are provided in two groups, and the clamping cylinders (18) are connected to the clamping plates (23) via bolts.

7. The rotary stamping die for a motor core according to claim 1, characterized in that: Side grooves (7) are respectively provided on both sides of the bottom end of the upper mold (1), and oblique rods (8) are fixed in the side grooves (7). Spring grooves (12) are respectively provided on both sides of the top end of the lower mold (22), and springs (13) are fixedly connected to the inner walls of the spring grooves (12). The springs (13) are fixedly connected to the clamping blocks (11), and the clamping blocks (11) are symmetrically distributed about the center point of the iron core member (10).

8. The rotary stamping die for a motor core according to claim 7, characterized in that: The inclined rod (8) is arranged at an angle, and when the upper die (1) and the lower die (22) are closed, the inclined rod (8) and the clamping block (11) are in conflict with each other.

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