Low-stress rotating lamination device for stator and rotor cores

Abstract

This utility model discloses a low-stress rotary lamination device for stator and rotor cores, specifically relating to the field of stator and rotor core technology. It includes a base with a mounting cavity on its surface. A servo motor is fixedly installed inside the mounting cavity. A lamination stage is located on the top of the base, and a positioning mechanism is located on one side of the lamination stage. The positioning mechanism includes a threaded groove on the surface of the lamination stage, with a positioning post threadedly connected inside the threaded groove. Multiple guide posts are threadedly connected to the surface of the lamination stage. A rotating stage is located at the bottom of the lamination stage, with a positioning groove on its surface. This utility model improves positioning efficiency and accuracy, and double-reinforces the lamination stage and rotating stage to ensure a stable connection, providing reliable assurance for lamination accuracy. Furthermore, it achieves precise drive of the rotating shaft, reducing friction during rotation, lowering stress generation, and improving the accuracy and stability of the lamination stage's position adjustment.

Description

Technical Field

[0001] This utility model relates to the field of stator and rotor core technology, and more specifically, to a low-stress rotating lamination device for stator and rotor cores. Background Technology

[0002] In the field of motor manufacturing, the stator and rotor cores are one of the core components of a motor. The rotor core is usually made up of several rotor laminations. The lamination process seems simple, but it actually requires extremely high precision. The quality of the laminations directly affects the performance and lifespan of the motor. Because the length of the mandrel in the existing mechanism is not adjustable, the stacking size of the rotor core can only be finely adjusted to a certain extent, making it impossible to make significant adjustments to the stacking size of the core. Moreover, the mandrel is not easy to remove after the rotor core is stacked and pressed.

[0003] A search revealed that Chinese Patent Publication No. CN115800655A discloses a stator and rotor core stacking device. This mechanism, through the setting of an adjustment mechanism, can adjust the distance between the first fixed plate and the second fixed plate, thereby adjusting the distance between the pressure plate and the support plate, and thus adjusting the stacking height of the rotor laminations. Furthermore, by rotating the second knob, the threaded push rod can be driven to extend into the fixed groove, thereby pushing the first fixed plate out of the fixed groove, thus facilitating the removal of the adjustment mechanism and the stacked rotor laminations.

[0004] However, in actual use, this structure is mainly installed through the cooperation of the fixing groove and the first fixing plate. Although the first fixing plate can be easily removed by pushing out the threaded rod, when the rotational force is applied to the component, a gap is easily generated between the fixing groove and the first fixing plate, which leads to relative displacement between the stacking stage and the rotating components. This causes the rotation angle of the stacking stage to be out of sync with the rotating components, and the stacked silicon steel sheets and the silicon steel sheets to be stacked to be misaligned in the circumferential direction, which directly damages the coaxiality and perpendicularity of the stacking, and ultimately affects the stacking accuracy. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a low-stress rotating lamination device for stator and rotor cores to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A low-stress rotating lamination device for stator and rotor cores includes a base, a mounting cavity is formed on the surface of the base, a servo motor is fixedly installed inside the mounting cavity, a lamination stage is provided on the top of the base, and a positioning mechanism is provided on one side of the lamination stage. The positioning mechanism includes a threaded groove formed on the surface of the stacking table, a positioning post being threadedly connected inside the threaded groove, a plurality of guide posts being threadedly connected to the surface of the stacking table, and a rotating table being provided at the bottom of the stacking table. The rotary table has a positioning groove on its surface, a positioning ring is inserted into the positioning groove, the positioning ring has multiple positioning holes on its surface, a positioning rod is inserted into the positioning holes, and a fixing ring is inserted into the stacking table. The fixing ring is connected to the stacking table by bolts. The top of the positioning column is conical, the positioning ring is fixedly connected to the top of the stacking table, and one end of the fixing ring is fixedly connected to the rotating table.

[0007] By adopting the above technical solution: the conical top of the positioning column facilitates the quick insertion of silicon steel sheets, the guide column can effectively limit the offset of silicon steel sheets, improve positioning efficiency and accuracy, and the bolted connection between the positioning ring and the positioning rod and the fixing ring double reinforces the stacking table and the rotating table, ensuring that the connection between the two is stable and providing a reliable guarantee for the stacking accuracy.

[0008] As a further description of the above technical solution: the base is provided with a rotating mechanism, the rotating mechanism includes a rotating shaft fixedly installed at the output end of the servo motor, a first gear is fixedly installed on the surface of the rotating shaft, a second gear is meshed on the surface of the first gear, a rotating shaft is fixedly installed inside the second gear, a fixed plate is fixedly installed on the top of the base, and the fixed plate is connected to the rotating shaft by a ball bearing. The fixed plate has a sliding groove inside, and a T-shaped slip ring is slidably arranged inside the sliding groove. One end of the T-shaped slip ring and the rotating shaft are both connected to the bottom of the rotating table.

[0009] By adopting the above technical solutions, precise driving of the rotating shaft is achieved, the ball bearings of the fixed plate reduce rotational friction, and the T-shaped slip ring slides in the slide groove, ensuring the smooth rotation of the rotary table, improving the accuracy and stability of the stacking table position adjustment, and contributing to efficient and high-quality stacking.

[0010] As a further description of the above technical solution: a support frame is fixedly provided on one side of the base, a hydraulic cylinder is fixedly installed on the top of the support frame, and a pressure head is fixedly provided at the output end of the hydraulic cylinder; A rubber layer is fixedly provided at the bottom of the pressure head, and multiple pressure sensors are embedded in the surface of the pressure head. A controller is fixedly provided on one side of the support frame. Multiple positioning cylinders are fixedly installed at the bottom of the pressure head. Positioning pins are slidably installed inside the positioning cylinders. Springs are fixedly installed inside the positioning cylinders, and one end of the springs is connected to the positioning pins.

[0011] By adopting the above technical solution, the positioning pin inside the positioning cylinder can reposition the silicon steel sheet under the action of the spring, improving the stacking accuracy. Moreover, the rubber layer at the bottom of the pressure head can reduce damage to the silicon steel sheet and ensure the stacking quality.

[0012] The technical effects and advantages of this utility model are as follows: 1. By setting up a positioning mechanism, compared with the existing technology, the cooperation between the positioning ring and the positioning rod, combined with the bolt connection of the fixing ring, forms a double fixing structure, which greatly improves the connection stability between the stacking table and the rotary table, avoids relative displacement between the two, ensures synchronous movement during rotation and adjustment, and lays the foundation for stacking accuracy. Moreover, when placing silicon steel sheets, the guide column quickly achieves preliminary positioning to prevent large deviations. The conical top design of the positioning column reduces the difficulty of inserting silicon steel sheets, speeds up the positioning speed, and reduces the squeezing and friction between silicon steel sheets caused by inaccurate positioning, thereby reducing stress and significantly improving the preliminary positioning efficiency. The combination of double positioning and stable connection reduces the error in the stacking process, ensures the quality of iron core stacking, and improves the overall operation efficiency. 2. By setting up a rotating mechanism, compared with the existing technology, the servo motor drives the rotating shaft to rotate precisely through the meshing transmission of the rotating shaft, the first gear and the second gear, so as to achieve precise adjustment of the position of the stacking table and ensure the accuracy of the stacking position. Moreover, the ball bearing in the fixed plate reduces the rotation friction of the rotating shaft, making the rotation smoother and reducing the stress caused by excessive frictional resistance. The T-shaped slip ring slides in the slide groove and works in conjunction with the rotating shaft to ensure the rotation of the rotating table is stable and avoids shaking during the rotation process. This reduces the stress caused by shaking between silicon steel sheets. In addition, in conjunction with the pressing mechanism, after rotation adjustment, it can quickly enter the pressing stage, reduce the positioning adjustment time, improve the overall operation efficiency, and at the same time, stable rotation reduces stress generation and ensures the quality of iron core stacking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the positioning mechanism of this utility model.

[0015] Figure 3 This is a schematic diagram of the disassembled structure of the positioning mechanism of this utility model.

[0016] Figure 4 This is a cross-sectional schematic diagram of the rotating mechanism of this utility model.

[0017] Figure 5 This is a schematic diagram showing the detailed cross-sectional structure of the pressure head of this utility model.

[0018] The attached figures are labeled as follows: 1. Base; 2. Mounting cavity; 3. Servo motor; 4. Stacking stage; 5. Positioning column; 6. Guide column; 7. Rotary table; 8. Positioning ring; 9. Positioning rod; 10. Fixing ring; 11. Rotating shaft; 12. First gear; 13. Second gear; 14. Rotating shaft; 15. Fixing disc; 16. T-shaped slip ring; 17. Support frame; 18. Hydraulic cylinder; 19. Pressure head; 20. Pressure sensor; 21. Controller; 22. Positioning cylinder; 23. Positioning pin; 24. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] The embodiments disclosed in this application are as follows: Figure 1-5 The low-stress rotating lamination device for stator and rotor cores shown includes a base 1, an installation cavity 2 is provided on the surface of the base 1, a servo motor 3 is fixedly installed inside the installation cavity 2, a lamination stage 4 is provided on the top of the base 1, and a positioning mechanism is provided on one side of the lamination stage 4. The positioning mechanism includes a threaded groove on the surface of the stacking table 4, a positioning post 5 is threadedly connected inside the threaded groove, a plurality of guide posts 6 are threadedly connected to the surface of the stacking table 4, and a rotating table 7 is provided at the bottom of the stacking table 4. The surface of the rotary table 7 is provided with a positioning groove, and a positioning ring 8 is inserted into the positioning groove. The surface of the positioning ring 8 is provided with multiple positioning holes, and a positioning rod 9 is inserted into the positioning holes. A fixing ring 10 is inserted into the stacking table 4, and the fixing ring 10 is connected to the stacking table 4 by bolts. The top of the positioning column 5 is conical, the positioning ring 8 is fixedly connected to the top of the stacking table 4, and one end of the fixing ring 10 is fixedly connected to the rotating table 7. Since the rotating platform 7 at the bottom of the stacking platform 4 is fixedly connected to the top of the stacking platform 4 through the positioning ring 8, and the positioning rod 9 is inserted into the positioning hole on the surface of the positioning ring 8, the relative position between the stacking platform 4 and the rotating platform 7 is fixed through the cooperation of the positioning rod 9 and the positioning hole. Moreover, one end of the fixing ring 10 is fixedly connected to the rotating platform 7, and the other end is inserted into the stacking platform 4 and connected by bolts, which further enhances the connection stability between the stacking platform 4 and the rotating platform 7. Then the operator places the silicon steel sheet on the stacking table 4, so that the hole on the silicon steel sheet matches the guide post 6. The guide post 6 performs preliminary positioning of the silicon steel sheet to prevent the silicon steel sheet from shifting significantly during the stacking process. Since the top of the positioning post 5 is conical, it is easy for the silicon steel sheet to quickly find the positioning post 5 and fit on it, further improving the efficiency of preliminary positioning.

[0021] Reference Figure 2-3 As shown, the base 1 is equipped with a rotating mechanism, which includes a rotating shaft 11 fixedly mounted on the output end of the servo motor 3. A first gear 12 is fixedly mounted on the surface of the rotating shaft 11. A second gear 13 meshes with the surface of the first gear 12. A rotating shaft 14 is fixedly mounted inside the second gear 13. A fixed plate 15 is fixedly mounted on the top of the base 1. The fixed plate 15 and the rotating shaft 14 are connected by a ball bearing. The fixed plate 15 has a sliding groove inside, and a T-shaped slip ring 16 is slidably arranged inside the sliding groove. One end of the T-shaped slip ring 16 and the rotating shaft 14 are both connected to the bottom of the rotating table 7. When the position of the stacking stage 4 needs to be adjusted, the controller 21 controls the servo motor 3 in the mounting cavity 2 to start. The output end of the servo motor 3 drives the rotating shaft 11 to rotate, and the first gear 12 on the surface of the rotating shaft 11 rotates accordingly. The first gear 12 meshes with the second gear 13, thereby driving the rotating shaft 14 inside the second gear 13 to rotate. The rotating shaft 14 rotates in the fixed plate 15 through ball bearings. At the same time, the T-shaped slip ring 16 in the sliding groove inside the fixed plate 15 drives the rotating table 7 to rotate together with the rotating shaft 14, realizing the rotation adjustment of the stacking stage 4. The sliding setting of the T-shaped slip ring 16 ensures the stability of the rotation process of the rotating table 7.

[0022] Reference Figure 4-5 As shown, a support frame 17 is fixedly installed on one side of the base 1, a hydraulic cylinder 18 is fixedly installed on the top of the support frame 17, and a pressure head 19 is fixedly installed at the output end of the hydraulic cylinder 18. A rubber layer is fixedly provided at the bottom of the pressure head 19, and multiple pressure sensors 20 are embedded in the surface of the pressure head 19. A controller 21 is fixedly provided on one side of the support frame 17. Multiple positioning cylinders 22 are fixedly installed at the bottom of the pressure head 19. Positioning pins 23 are slidably installed inside the positioning cylinders 22. Springs 24 are fixedly installed inside the positioning cylinders 22. One end of the springs 24 is connected to the positioning pins 23. After the silicon steel sheet is positioned and rotated, the controller 21 controls the hydraulic cylinder 18 at the top of the support frame 17 to work. The output end of the hydraulic cylinder 18 drives the pressure head 19 to descend. The positioning pin 23 in the positioning cylinder 22 at the bottom of the pressure head 19 contacts the silicon steel sheet first under the action of the spring 24, and repositions the silicon steel sheet to ensure the accuracy of the stacking. Subsequently, the pressure head 19 continues to descend to apply pressure to the silicon steel sheet. The pressure sensor 20 embedded on the surface of the pressure head 19 detects the pressing pressure in real time and transmits the signal to the controller 21. The controller 21 adjusts the output force of the hydraulic cylinder 18 according to the preset pressure value to ensure uniform pressing pressure and avoid stress caused by excessive pressure. The rubber layer at the bottom of the pressure head 19 can reduce damage to the silicon steel sheet during the pressing process.

[0023] Working principle of this utility model: This utility model is a low-stress rotating lamination device for stator and rotor iron cores. When the device is in use, the rotating platform 7 at the bottom of the lamination platform 4 is fixedly connected to the top of the lamination platform 4 through the positioning ring 8. The positioning ring 8 has a positioning rod 9 inserted into the positioning hole on its surface. The relative position between the lamination platform 4 and the rotating platform 7 is fixed by the cooperation of the positioning rod 9 and the positioning hole. Moreover, one end of the fixing ring 10 is fixedly connected to the rotating platform 7, and the other end is inserted into the lamination platform 4 and connected by bolts, which further enhances the connection stability between the lamination platform 4 and the rotating platform 7. Then the operator places the silicon steel sheet on the stacking table 4, so that the hole on the silicon steel sheet matches the guide post 6. The guide post 6 performs preliminary positioning of the silicon steel sheet to prevent the silicon steel sheet from shifting significantly during the stacking process. Since the top of the positioning post 5 is conical, it is easy for the silicon steel sheet to quickly find the positioning post 5 and fit on it, further improving the efficiency of preliminary positioning. When the position of the stacking stage 4 needs to be adjusted, the controller 21 controls the servo motor 3 in the mounting cavity 2 to start. The output end of the servo motor 3 drives the rotating shaft 11 to rotate. The first gear 12 on the surface of the rotating shaft 11 rotates accordingly. The first gear 12 meshes with the second gear 13, thereby driving the rotating shaft 14 inside the second gear 13 to rotate. The rotating shaft 14 rotates in the fixed plate 15 through ball bearings. Meanwhile, the T-shaped slip ring 16 in the internal groove of the fixed plate 15, together with the rotating shaft 14, drives the rotating table 7 to rotate, realizing the rotational adjustment of the stacking table 4. The sliding setting of the T-shaped slip ring 16 ensures the stability of the rotating table 7 during rotation. After the silicon steel sheet is positioned and rotated, the controller 21 controls the hydraulic cylinder 18 at the top of the support frame 17 to work. The output end of the hydraulic cylinder 18 drives the pressure head 19 to descend. The positioning pin 23 in the positioning cylinder 22 at the bottom of the pressure head 19 contacts the silicon steel sheet first under the action of the spring 24, and repositions the silicon steel sheet to ensure the accuracy of the stacking. Subsequently, the pressure head 19 continues to descend to apply pressure to the silicon steel sheet. The pressure sensor 20 embedded on the surface of the pressure head 19 detects the pressing pressure in real time and transmits the signal to the controller 21. The controller 21 adjusts the output force of the hydraulic cylinder 18 according to the preset pressure value to ensure uniform pressing pressure and avoid stress caused by excessive pressure. The rubber layer at the bottom of the pressure head 19 can reduce damage to the silicon steel sheet during the pressing process. The pressure sensor (20) can be a PT124G-111 model, which has high accuracy and fast response and can accurately detect the pressing pressure. The controller (21) can be a PLC controller S7-1200 series, which has strong computing power and good stability. It can effectively receive the pressure sensor signal and regulate the hydraulic cylinder pressure to ensure stable operation of the device. After one pressing is completed, the hydraulic cylinder 18 drives the pressure head 19 to rise, and the operator places the next silicon steel sheet. The above steps are repeated until the stacked sheets reach the required thickness.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-stress rotating lamination arrangement for a stator and rotor core, comprising a base (1), characterized in that: The base (1) has an installation cavity (2) on its surface. A servo motor (3) is fixedly installed inside the installation cavity (2). A stacking platform (4) is provided on the top of the base (1). A positioning mechanism is provided on one side of the stacking platform (4). The positioning mechanism includes a threaded groove on the surface of the stacking table (4), a positioning post (5) is threaded inside the threaded groove, and a plurality of guide posts (6) are threaded on the surface of the stacking table (4). A rotating table (7) is provided at the bottom of the stacking table (4). The surface of the rotary table (7) is provided with a positioning groove, and a positioning ring (8) is inserted into the inside of the positioning groove. The surface of the positioning ring (8) is provided with multiple positioning holes, and a positioning rod (9) is inserted into the inside of the positioning hole. A fixing ring (10) is inserted into the inside of the stacking table (4), and the fixing ring (10) is connected to the stacking table (4) by bolts.

2. The stator-rotor core low-stress rotary lamination arrangement of claim 1, wherein: The top of the positioning column (5) is conical, the positioning ring (8) is fixedly connected to the top of the stacking table (4), and one end of the fixing ring (10) is fixedly connected to the rotating table (7).

3. The stator-rotor core low-stress rotary lamination arrangement of claim 1, wherein: The base (1) is provided with a rotating mechanism inside. The rotating mechanism includes a rotating shaft (11) fixedly installed at the output end of the servo motor (3). A first gear (12) is fixedly installed on the surface of the rotating shaft (11). A second gear (13) meshes on the surface of the first gear (12). A rotating shaft (14) is fixedly installed inside the second gear (13). A fixed plate (15) is fixedly installed on the top of the base (1). The fixed plate (15) and the rotating shaft (14) are connected by ball bearings.

4. The stator-rotor core low-stress rotary lamination arrangement of claim 3, wherein: The fixed plate (15) has a sliding groove inside, and a T-shaped slip ring (16) is slidably arranged inside the sliding groove. One end of the T-shaped slip ring (16) and the rotating shaft (14) are both connected to the bottom of the rotating table (7).

5. The stator-rotor core low-stress rotary lamination arrangement of claim 1, wherein: A support frame (17) is fixedly installed on one side of the base (1), and a hydraulic cylinder (18) is fixedly installed on the top of the support frame (17). A pressure head (19) is fixedly installed at the output end of the hydraulic cylinder (18).

6. The stator-rotor core low-stress rotary lamination arrangement of claim 5, wherein: A rubber layer is fixedly provided at the bottom of the pressure head (19), and multiple pressure sensors (20) are embedded in the surface of the pressure head (19). A controller (21) is fixedly provided on one side of the support frame (17).

7. The stator-rotor core low-stress rotary lamination arrangement of claim 6, wherein: The bottom of the pressure head (19) is fixedly provided with multiple positioning cylinders (22), and a positioning pin (23) is slidably provided inside the positioning cylinder (22). A spring (24) is fixedly provided inside the positioning cylinder (22), and one end of the spring (24) is connected to the positioning pin (23).

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