Magnetic core winding device for mutual inductor
By designing a current transformer core winding device with roller limiters and guide wheels to adjust the tension, the problems of core misalignment and slack were solved, achieving stable winding and efficient production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG YETAI SOFT MAGNETIC TECH CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-15
AI Technical Summary
Existing automatic feeding devices for transformer core winding can only simply convey the material belt, which cannot effectively solve the problems of core misalignment and slack, thus affecting production quality.
A current transformer core winding device was designed, which includes rollers, guide wheels, winding reels and servo motors. The tension is adjusted by rollers for limiting and guide wheels for adjusting, so as to ensure stable winding of the core and avoid deviation and slack.
It improves the production quality and working efficiency of the current transformer core winding device, ensures stable core winding, avoids deviation and slack, and enhances production quality and efficiency.
Smart Images

Figure CN224242350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of current transformer core winding technology, specifically a current transformer core winding device. Background Technology
[0002] The winding device can maintain constant tension, preventing the magnetic core from being too loose or too tight, thereby ensuring the stable operation of the equipment and preventing problems such as winding chaos, deformation or breakage. The quality of the current transformer magnetic core directly affects the measurement accuracy and performance of the current transformer.
[0003] The prior art discloses patent application number "CN202022459322.6", which discloses an automatic feeding device for winding current transformer cores. The device includes a side plate, a base plate fixedly installed on the lower end face of the side plate, a guide plate and a support plate fixedly installed on the upper end face of the base plate, and the guide plate and the support plate are on the same horizontal line. An active tooth is rotatably installed between the guide plate and the support plate. A movable groove is opened on the upper end face of the base plate at a position corresponding to the active tooth. A rotating tooth is rotatably installed inside the movable groove. A motor is fixedly installed on the inside of the base plate near one side. The output shaft of the motor passes through the inside of the rotating tooth. A guide wheel is provided above the active tooth. A sliding groove is opened on the front end face of the side plate at a position corresponding to the guide wheel. A slider is slidably installed inside the sliding groove.
[0004] The automatic feeding device for winding current transformer cores can only transport material strips of different sizes. In actual use, the device can usually only transport and wind up the current transformer cores. If the current transformer cores deviate, it will affect the production quality of the current transformer core winding device. Furthermore, if the current transformer cores become loose during winding, it will also reduce the production quality of the current transformer core winding device. Utility Model Content
[0005] The purpose of this invention is to provide a current transformer core winding device to solve the problems mentioned in the background art.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A current transformer core winding device includes a winding device body, a top plate fixedly connected to the upper side of the winding device body, two support plates fixedly connected to one side of the top plate, telescopic seats slidably connected to one side of each of the two support plates, a spring array connected between the two telescopic seats and the support plates, and an array of rollers rotatably connected inside each of the two telescopic seats, with the core body being conveyed between the two sets of rollers.
[0008] A rotating shaft seat is rotatably connected to one side of the top plate. A controller is fixedly installed on the front side of the main body of the winding device. An L-shaped plate is fixedly connected to the upper side of the top plate. An electric push rod is fixedly installed on one side of the L-shaped plate. A base plate is fixedly installed on one side of the electric push rod. A slide block is slidably connected to the lower side of the base plate. A guide wheel for adjusting the winding tension is rotatably connected inside the slide block. Two springs are fixedly connected between the slide block and the base plate.
[0009] Preferably, a T-shaped block is snapped onto the upper side of the rotating shaft seat, a winding reel is fixedly connected to one side of the T-shaped block, a slot for fixing the magnetic core is opened at one end of the winding reel, a retaining plate is threadedly connected to one side of the winding reel, grooves are opened at both ends of the T-shaped block, and locking rods for fixing the T-shaped block are slidably connected to both ends inside the rotating shaft seat, and springs are fixedly installed between the two locking rods and the rotating shaft seat. One side of the locking rod passes through the rotating shaft seat and extends to one side of the rotating shaft seat. An electric push rod is electrically connected to the controller. A servo motor is fixedly installed on the other side of the top plate. The output shaft of the servo motor is fastened to the rotating shaft seat, and the servo motor is electrically connected to the controller.
[0010] Preferably, a round seat is fixed on one side of each of the two clamping rods, and the other side of the clamping rod is clamped into the inside of the groove. An L-shaped positioning plate for fixing the T-shaped block is clamped on one side of the rotating shaft seat. A fastening bolt is threaded on one side of the L-shaped positioning plate, and one side of the fastening bolt passes through the L-shaped positioning plate and extends to one side of the rotating shaft seat.
[0011] Preferably, both ends of the rotating shaft seat are fixedly connected to L-shaped side plates, and the interior of the two L-shaped side plates is provided with a circular groove for fixing the circular seat. The interior of the main body of the tape winding device is rotatably connected to a movable wheel for supporting the winding reel. A U-shaped seat is fixedly provided on the upper side of the main body of the tape winding device, and a limit plate is engaged on one side of the U-shaped seat.
[0012] Preferably, a double-ended lead screw is rotatably connected inside the top plate, and two symmetrically distributed mounting brackets are threaded onto the outer surface of the double-ended lead screw. Each mounting bracket has an array of rollers rotatably connected to one side. A vertical rod is fixedly connected inside the vertical rod, and the outer surface of the vertical rod is slidably connected to the inside of the mounting bracket. One side of the double-ended lead screw passes through the top plate and extends into the interior of the top plate. A handwheel is fixedly installed on one side of the double-ended lead screw. A connecting plate is fixedly connected to one side of the top plate, and an electric push rod is fixedly installed on one side of the connecting plate. A cutter is fixedly installed on one side of the electric push rod.
[0013] Preferably, a recessed seat is fixedly connected to one side of the top plate, the recessed seat is located below the cutter, two horizontal plates for limiting the magnetic core are fixedly installed on one side of the telescopic seat, a circular plate for limiting the magnetic core is fixedly provided on one side of the roller two, and the electric push rod two is electrically connected to the controller.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model improves the stability of the current transformer core winding device during winding by limiting the winding of the magnetic core with roller one and roller two, and avoids the current transformer core from deviating. Then, the rotating shaft seat can drive the winding reel and the baffle to smoothly and reliably wind the current transformer core, so that the current transformer core completes the winding work and improves the production quality of the current transformer core winding device.
[0016] 2. This utility model allows the slide seat equipped with spring 2 to move up and down to adjust the tension of the guide wheel on the magnetic core. This can prevent the magnetic core from being too loose or the winding from being too tight, thus further improving the production quality of the current transformer magnetic core. At the same time, this snap-fit method allows for easy disassembly of the winding reel to remove the current transformer magnetic core, improving the working efficiency of the current transformer magnetic core winding device. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a utility model Figure 1 Installation diagram of roller one and roller two;
[0020] Figure 3 This is a utility model Figure 1 Installation diagram of the L-shaped positioning plate and fastening bolts;
[0021] Figure 4 This is a utility model Figure 3 A schematic diagram of the structure of the T-block, winding reel, and baffle.
[0022] Figure 5 This is a utility model Figure 4 Installation diagram of the center clamp and L-shaped positioning plate;
[0023] Figure 6 This is a utility model Figure 4 Schematic diagram of the winding reel and slot;
[0024] The attached figures are labeled as follows:
[0025] 1. Main body of the winding device; 2. Top plate; 3. Support plate; 4. Telescopic seat; 5. Roller 1; 6. Spring 1; 7. Magnetic core body; 8. Double-ended lead screw; 9. Mounting frame; 10. Roller 2; 11. Vertical rod; 12. Handwheel; 13. Winding reel; 14. Controller; 15. L-shaped plate; 16. Electric push rod 1; 17. Base plate; 18. Slide seat; 19. Spring 2; 20. Guide wheel; 21. Circular plate 22. Horizontal plate; 23. Connecting plate; 24. Electric push rod II; 25. Cutter; 26. Recessed seat; 27. Rotary shaft seat; 28. T-block; 29. Groove; 30. Slot; 31. Baffle; 32. Locking rod; 33. Spring III; 34. Round seat; 35. L-shaped positioning plate; 36. Fastening bolt; 38. L-shaped side plate; 39. Round groove; 40. Playing wheel; 41. U-shaped seat; 42. Limiting plate. Detailed Implementation
[0026] 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 scope of protection of the present utility model.
[0027] like Figures 1 to 6 As shown, a current transformer core winding device includes a winding device body 1. A top plate 2 is fixedly connected to the upper side of the winding device body 1. Two support plates 3 are fixedly connected to one side of the top plate 2. Telescopic seats 4 are slidably connected to one side of each of the two support plates 3. Springs 6 are connected in an array between the two telescopic seats 4 and the support plates 3. Rollers 5 distributed in an array are rotatably connected inside each of the two telescopic seats 4. The core body 7 is conveyed between the two sets of rollers 5. The elastic rollers 5 can elastically limit the core, allowing the core to be smoothly wound up to complete the winding work.
[0028] A rotating shaft seat 27 is rotatably connected to one side of the top plate 2. A controller 14 is fixedly installed on the front side of the main body 1 of the winding device. The controller 14 is model DATA-7133. An L-shaped plate 15 is fixedly connected to the upper side of the top plate 2. An electric push rod 16 is fixedly installed on one side of the L-shaped plate 15. A base plate 17 is fixedly installed on one side of the electric push rod 16. A slide block 18 is slidably connected to the lower side of the base plate 17. A guide wheel 20 for adjusting the winding tension is rotatably connected inside the slide block 18. Two springs 19 are fixedly connected between the slide block 18 and the base plate 17.
[0029] A T-shaped block 28 is snapped onto the upper side of the rotating shaft seat 27. A winding reel 13 is fixedly connected to one side of the T-shaped block 28. A slot 30 for fixing the magnetic core is opened at one end of the winding reel 13. A retaining plate 31 is threaded onto one side of the winding reel 13. The retaining plate 31 on the winding reel 13 can be removed by rotating the retaining plate 31, which is convenient to use. Both ends of the T-shaped block 28 are provided with grooves 29. Both ends of the rotating shaft seat 27 are slidably connected to the retaining rods 32 for fixing the T-shaped block 28. A spring 33 is fixedly installed between the two retaining rods 32 and the rotating shaft seat 27. One side of the retaining rod 32 passes through the rotating shaft seat 27 and extends to one side of the rotating shaft seat 27. An electric push rod 16 is electrically connected to the controller 14. A servo motor is fixedly installed on the other side of the top plate 2. The output shaft of the servo motor is fastened to the rotating shaft seat 27. The servo motor and the controller 14 are electrically connected. The model of the servo motor is SMBL-60P.
[0030] Both locking rods 32 are fixed with a round seat 34 on one side, and the other side of the locking rod 32 is locked inside the groove 29. One side of the rotating shaft seat 27 is locked with an L-shaped positioning plate 35 for fixing the T-shaped block 28. One side of the L-shaped positioning plate 35 is threaded with a fastening bolt 36. One side of the fastening bolt 36 passes through the L-shaped positioning plate 35 and extends to one side of the rotating shaft seat 27.
[0031] Both ends of the rotating shaft seat 27 are fixedly connected to L-shaped side plates 38. The interior of each L-shaped side plate 38 is provided with a circular groove 39 for fixing the circular seat 34. The inside of the main body 1 of the winding device is rotatably connected to a movable wheel 40 for supporting the winding reel 13. The movable wheel 40 can support the rotating winding reel 13 and rotate with the winding reel 13, making the winding reel 13 safer to use. A U-shaped seat 41 is fixedly provided on the upper side of the main body 1 of the winding device. A limiting plate 42 is engaged on one side of the U-shaped seat 41. The winding reel 13 is stored and secured by the U-shaped seat 41 and the limiting plate 42, which provides good safety.
[0032] The top plate 2 is internally connected to a double-ended lead screw 8. The outer surface of the double-ended lead screw 8 is threaded with two symmetrically distributed mounting brackets 9. Each of the two mounting brackets 9 is rotatably connected to one side of an array of rollers 10. The vertical rod 11 is internally fixedly connected to the vertical rod 11. The outer surface of the vertical rod 11 is slidably connected to the interior of the mounting bracket 9. The vertical rod 11 can be used to limit the movement trajectory of the two mounting brackets 9, ensuring that the two sets of rollers 10 can be smoothly adjusted and moved to adapt to magnetic cores of different sizes. One side of the double-ended lead screw 8 passes through the top plate 2 and extends into the interior of the top plate 2. A handwheel 12 is fixedly installed on one side of the double-ended lead screw 8. A connecting plate 23 is fixedly connected to one side of the top plate 2. An electric push rod 24 is fixedly installed on one side of the connecting plate 23. A cutter 25 is fixedly installed on one side of the electric push rod 24.
[0033] A recessed seat 26 is fixedly connected to one side of the top plate 2. The recessed seat 26 is located below the cutter 25. Two horizontal plates 22 for limiting the magnetic core are fixedly installed on one side of the telescopic seat 4. A circular plate 21 for limiting the magnetic core is fixedly provided on one side of the roller 10. The horizontal plates 22 and the circular plate 21 can also be used to limit the magnetic core to ensure that the magnetic core will not deviate. The electric push rod 24 is electrically connected to the controller 14. The model of the two electric push rods is HB-DJ801.
[0034] The working principle of the current transformer core winding device provided by this utility model is as follows:
[0035] First, the magnetic core body 7 is inserted between the two sets of rollers 5. The spring force of spring 6 allows the two sets of rollers 5 to elastically position the magnetic core body 7. Then, the magnetic core body 7 is sequentially inserted into the guide wheel 20 and the winding reel 13. Next, the magnetic core body 7 is inserted into the slot 30 of the winding reel 13 to fix its position. Then, the handwheel 12 is turned, driving the double-ended lead screw 8 to rotate. At this time, the two mounting brackets 9 on the double-ended lead screw 8 can move towards each other, thus allowing the rollers 10 on the two mounting brackets 9 to... The rollers 5 and 10 are adapted to the upper and lower sides of the positioning magnetic core body 7, so that the rollers 5 and 10 can be used together to limit the winding of the magnetic core body 7, improving the stability of the current transformer magnetic core winding device during winding and preventing the current transformer magnetic core from deviating. Then, the controller 14 is used to start the servo motor, so that the output shaft of the servo motor drives the rotating shaft seat 27 to rotate. In this way, the winding disc 13 and the baffle 31 on the rotating shaft seat 27 can smoothly and reliably wind the current transformer magnetic core, allowing the current transformer magnetic core to complete the winding work and improving the production quality of the current transformer magnetic core winding device.
[0036] By restarting the electric push rod 16 using the controller 14, when the electric push rod 16 moves the slide 18 equipped with the spring 19 upward, the elastic guide wheel 20 tightens the magnetic core body 7, preventing the magnetic core body 7 from being too loose and affecting the winding process. When the magnetic core body 7 moves the elastic guide wheel 20 downward, it can prevent the winding from being too tight, further improving the production quality of the current transformer core. Subsequently, when the work is finished, the controller 14 can start the electric push rod 24, which moves the cutter 25 downward to cut the magnetic core. The core body 7 completes the winding of the current transformer core. Then, the two round seats 34 are pulled in sequence, so that the two round seats 34 are engaged in the round grooves 39 of the two L-shaped side plates 38. In this way, the two locking rods 32 with springs 33 can move away from the T-shaped block 28. Then, the fastening bolt 36 is rotated to release the limiting of the L-shaped positioning plate 35. The L-shaped positioning plate 35 is pulled out, and the T-shaped block 28 is taken out from the inside of the rotating shaft seat 27. In this way, the current transformer core can be easily disassembled and taken out by using the locking method, which improves the working efficiency of the current transformer core winding device.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A current transformer core winding device, comprising a winding device body (1), characterized in that: The top plate (2) is fixedly connected to the upper side of the main body (1) of the tape winding device. Two support plates (3) are fixedly connected to one side of the top plate (2). Telescopic seats (4) are slidably connected to one side of each of the two support plates (3). Springs (6) are connected in an array between the two telescopic seats (4) and the support plates (3). Rollers (5) are rotatably connected in an array inside each of the two telescopic seats (4). The magnetic core body (7) is conveyed between the two sets of rollers (5). A rotating shaft seat (27) is rotatably connected to one side of the top plate (2). A controller (14) is fixedly installed on the front side of the main body (1) of the winding device. An L-shaped plate (15) is fixedly connected to the upper side of the top plate (2). An electric push rod (16) is fixedly installed on one side of the L-shaped plate (15). A base plate (17) is fixedly installed on one side of the electric push rod (16). A slide block (18) is slidably connected to the lower side of the base plate (17). A guide wheel (20) for adjusting the winding tension is rotatably connected inside the slide block (18). Two springs (19) are fixedly connected between the slide block (18) and the base plate (17).
2. The current transformer core winding device according to claim 1, characterized in that, A T-shaped block (28) is snapped onto the upper side of the rotating shaft seat (27). A winding reel (13) is fixedly connected to one side of the T-shaped block (28). A slot (30) for fixing the magnetic core is provided at one end of the winding reel (13). A retaining plate (31) is threaded onto one side of the winding reel (13). Grooves (29) are provided at both ends of the T-shaped block (28). A retaining rod (3) for fixing the T-shaped block (28) is slidably connected to both ends inside the rotating shaft seat (27). 2) A spring three (33) is fixedly installed between the two clamps (32) and the rotating shaft seat (27). One side of the clamp (32) passes through the rotating shaft seat (27) and extends to the other side of the rotating shaft seat (27). The electric push rod one (16) is electrically connected to the controller (14). A servo motor is fixedly installed on the other side of the top plate (2). The output shaft of the servo motor is tightly connected to the rotating shaft seat (27). The servo motor and the controller (14) are electrically connected.
3. The current transformer core winding device according to claim 2, characterized in that, One side of each of the two clamping rods (32) is fixed with a round seat (34), and the other side of the clamping rod (32) is clamped into the inside of the groove (29). One side of the rotating shaft seat (27) is clamped with an L-shaped positioning plate (35) for fixing the T-shaped block (28). One side of the L-shaped positioning plate (35) is threaded with a fastening bolt (36), and one side of the fastening bolt (36) passes through the L-shaped positioning plate (35) and extends to one side of the rotating shaft seat (27).
4. The current transformer core winding device according to claim 3, characterized in that, Both ends of the rotating shaft seat (27) are fixedly connected to L-shaped side plates (38). The interior of the two L-shaped side plates (38) is provided with a circular groove (39) for fixing the circular seat (34). The inside of the main body (1) of the winding device is rotatably connected to a movable wheel (40) for supporting the winding reel (13). A U-shaped seat (41) is fixedly provided on the upper side of the main body (1) of the winding device. A limit plate (42) is snapped into one side of the U-shaped seat (41).
5. The current transformer core winding device according to claim 1, characterized in that, The top plate (2) is rotatably connected to a double-ended lead screw (8). The outer surface of the double-ended lead screw (8) is threaded with two symmetrically distributed mounting brackets (9). Each of the two mounting brackets (9) is rotatably connected to an array of rollers (10). The vertical rod (11) is fixedly connected to the inside of the vertical rod (11). The outer surface of the vertical rod (11) is slidably connected to the inside of the mounting bracket (9). One side of the double-ended lead screw (8) penetrates the top plate (2) and extends into the interior of the top plate (2). A handwheel (12) is fixedly provided on one side of the double-ended lead screw (8). A connecting plate (23) is fixedly connected to one side of the top plate (2). An electric push rod (24) is fixedly provided on one side of the connecting plate (23). A cutter (25) is fixedly installed on one side of the electric push rod (24).
6. The current transformer core winding device according to claim 5, characterized in that, A recessed seat (26) is fixedly connected to one side of the top plate (2), and the recessed seat (26) is located below the cutter (25). Two horizontal plates (22) for limiting the magnetic core are fixedly installed on one side of the telescopic seat (4). A circular plate (21) for limiting the magnetic core is fixedly provided on one side of the roller (10). The electric push rod (24) is electrically connected to the controller (14).