A current transformer assembly and a coil winding device thereof

Abstract

The present application relates to the technical field of coil winding equipment, and discloses a current transformer assembly and a coil winding device thereof, which comprises a machine table, a guide chute is fixed on the machine table, the current transformer assembly comprises a shell, a coil is fixed in the shell, a sleeve hoop is arranged on the shell, a connecting screw rod is fixed on the sleeve hoop, connecting plates are symmetrically arranged on the shell, a mounting groove is arranged on the machine table, two backing plates are fixed on one side of the mounting groove on the machine table, a pneumatic cylinder two is fixed on one side of the backing plate, a pneumatic clamp is fixed on the output end of the pneumatic cylinder two, and a cutter is fixed on one side of the clamping jaw of the pneumatic clamp. Through automatic feeding and discharging, the coil is located on one side of the limiting roller after feeding, the limiting roller is moved by pushing, the limiting roller is close to the outer side of the coil, different sizes of coils are fixed, the inner roller contacts the inner side of the coil, the material supporting ring supports the coil, the coil is automatically positioned, the winding mechanism automatically winds the coil, the winding process is reliable, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of coil winding equipment technology, specifically a current transformer assembly and its coil winding device. Background Technology

[0002] A current transformer is an instrument that measures a large primary current by converting a small secondary current into a large primary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Since a current transformer contains winding coils, the coils need to be wound.

[0003] In the prior art, such as the application number CN201420193634.9, the disclosed name is: Current Transformer Coil Winding Fixture, which includes a base and a mounting platform. The base is set on the mounting platform, and a smooth rod is installed on the base. There are two smooth rods. A fixing beam is set on the smooth rod. There are two fixing beams. They are nested on the smooth rod through guide holes on the fixing beams. Columns are fixedly installed on the upper surface of the fixing beams. There are four columns. They are symmetrically and vertically installed on the fixing beams in pairs.

[0004] However, in the existing technology, such as the winding fixture mentioned in the application number, the coil fixing is not very secure and the applicability is poor. When the coils to be wound are of different sizes, it is not easy to fix the coils and the coil winding. In addition, the degree of automation in the coil winding process is low. Therefore, a current transformer assembly and its coil winding device are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a current transformer assembly and its coil winding device to solve the problems in the prior art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A coil winding device for a current transformer assembly includes a machine base, on which a feed trough for conveying the coil is fixedly installed. The current transformer assembly includes a housing, in which a coil is fixedly installed. A sleeve is provided on the housing, and a connecting screw for locking is fixed on the sleeve. Connecting plates for installation are symmetrically provided on the housing.

[0008] The machine base is provided with an installation slot. Two pads are fixed on the machine base and on one side of the installation slot. A second cylinder is fixed on one side of the pad. A pneumatic clamp is fixed at the output end of the second cylinder. A cutter is fixed on one side of the gripper of the pneumatic clamp.

[0009] Furthermore, a cylinder for transferring material is fixed on one side of the material guide groove, a discharge groove is provided between the two pads, a limiting rod for positioning the initial position of the coil is fixed in the mounting groove, oblique guide grooves are symmetrically provided on the limiting rod, and a cylinder is fixed below the mounting groove.

[0010] Furthermore, a fixture assembly slides within the mounting groove. The fixture assembly includes a support plate and a side plate. The support plate is fixed to the output end of the cylinder three, and a material support ring for supporting the coil rotates on the support plate.

[0011] The pallet has an opening groove on the side away from the side plate. The opening groove passes through the material support ring, and the end of the material support ring is slidably connected to the inclined guide groove. The opening groove cooperates with the limiting rod.

[0012] Furthermore, the pallet is provided with a shaft groove located at the center of the material support ring. The shaft groove is provided with a straight groove, and one end of the straight groove is provided with an inclined groove. The side plate is fixed to one side of the pallet. The side plate is provided with L-shaped grooves symmetrically. A movable shaft slides in the L-shaped groove, and a limiting roller for fixing the outer side of the coil rotates on the movable shaft.

[0013] Furthermore, a pull plate rotates on the moving shaft, and a cylinder four is fixed on the side plate. The output end of the cylinder four is rotatably connected to the two pull plates. A cylinder five for feeding is fixed on the side plate, and the output ends of the cylinder five and the cylinder four face the same direction.

[0014] Furthermore, a slide is fixed on the pad, one end of the slide has a through groove, a mounting seat slides on the slide, an array of shafts rotates on the mounting seat, gears are fixed on the shafts, a motor is fixed on the mounting seat, the output end of the motor is fixedly connected to the shafts, and a winding ring rotates on the mounting seat.

[0015] Furthermore, a toothed ring is fixed on the outer side of the winding ring, the toothed ring meshes with multiple gears, a limiting groove is provided on the inner side of the winding ring, a raw material wire rod is fixed on the winding ring, guide grooves are provided on both sides of the winding ring, the guide grooves are slidably connected to the mounting base, and a rectangular frame is fixed on one side of the mounting base.

[0016] Furthermore, the rectangular frame has an array of support rollers for supporting the winding ring, which rotate within the winding ring. The support rollers are slidably connected to the limiting groove, and the winding ring is provided with a through groove.

[0017] Furthermore, a stand is fixed on one side of the machine tool, and a mounting rod is fixed on the stand. The end of the mounting rod is provided with a horizontal groove, and a fixed shaft for limiting is fixed in the horizontal groove. A spring is fixed to one side of the fixed shaft. A movable frame is horizontally slidably provided in the horizontal groove, and a guide groove is provided on the movable frame. The fixed shaft is slidably installed in the guide groove.

[0018] Furthermore, one end of the spring is fixed to the end of the slide groove, an inner roller for fixing the inner side of the coil is rotatably mounted on the moving frame, a second motor is fixed on the moving frame, the output end of the second motor is fixedly connected to the inner roller, the fixed shaft is positioned and connected to the shaft groove, and one end of the moving frame is slidably connected to the inclined groove.

[0019] The beneficial effects of this invention are:

[0020] 1. The coil winding device of the present invention automatically feeds coils in sequence through automated loading and unloading operations. After loading, the coil is located on one side of the limiting roller. By pushing the limiting roller to move, the limiting roller is brought closer to the outside of the coil. The movable structure can fix coils of different sizes. Then the inner roller contacts the inner side of the coil to fix the coil. The material support ring supports the coil and improves the rotation flexibility of the coil.

[0021] 2. The coil winding device of the present invention has a simple structure. By automatically positioning the coil, the winding mechanism performs an automated winding operation on the coil. The winding process is reliable, the winding accuracy is high, and it is not easy to encounter problems such as wire jamming. Moreover, the equipment has a low failure rate, reduces the number of maintenance times, and improves production efficiency. At the same time, the winding process is rapid and it is suitable for winding coils of different sizes. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the current transformer assembly of the present invention;

[0024] Figure 2 This is a schematic diagram of the coil winding device of the present invention;

[0025] Figure 3 This is the present invention. Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 4 This is a cross-sectional structural schematic diagram of the coil winding device of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the fixture assembly of the present invention;

[0028] Figure 6 This is a schematic diagram of the slide table of the present invention;

[0029] Figure 7 This is a schematic diagram of the slide table of the present invention;

[0030] Figure 8 This is a schematic diagram of the slide table of the present invention;

[0031] Figure 9 This is a cross-sectional structural diagram of the slide table of the present invention;

[0032] Figure 10 This is a schematic diagram of the structure of the support frame of the present invention;

[0033] Figure 11 This is a partial structural cross-sectional view of the support frame of the present invention.

[0034] The attached diagram is described below:

[0035] 1. Outer shell; 2. Machine base; 3. Fixture assembly; 4. Slide table; 5. Stand; 11. Hoop; 12. Connecting plate; 13. Connecting screw; 20. Discharge chute; 21. Guide chute; 22. Cylinder 1; 23. Cylinder 3; 24. Mounting slot; 25. Pad plate; 26. Cylinder 2; 27. Pneumatic clamp; 28. Cutter; 29. ​​Limiting rod; 31. Support plate; 32. Side plate; 33. Supporting ring; 34. L-shaped groove; 35. Moving shaft; 36. Limiting roller; 37. Pulling plate; 38. Pneumatic clamp. Cylinder 4; 39. Cylinder 5; 40. Raw material rod; 41. Through groove; 42. Mounting base; 43. Shaft; 44. Gear; 45. Rectangular frame; 46. Support roller; 47. Winding ring; 48. Guide groove; 49. Limiting groove; 51. Mounting rod; 52. Horizontal groove; 53. Fixed shaft; 54. Moving frame; 55. Spring; 56. Inner roller; 57. Slide groove; 311. Open groove; 312. Shaft groove; 313. Straight groove; 400. Gear ring; 401. Through groove; 430. Motor 1. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] A current transformer assembly and its coil winding device are disclosed. The current transformer assembly is an important component in the smart grid industry. In the actual production process, the transformer needs to be wound into coils. The coil winding device performs automated coil winding and belongs to the manufacturing equipment related to power distribution system components.

[0038] A current transformer assembly, such as Figure 1 As shown, the current transformer assembly includes a housing 1, inside which a coil is installed. The housing 1 is fixedly installed on the outside of the coil. A sleeve 11 is fitted on the housing 1, and a connecting screw 13 is fixedly installed on the sleeve 11. The connecting screw 13 passes through both ends of the sleeve 11 and is threadedly connected to a nut to lock the sleeve 11. Symmetrically distributed connecting plates 12 are provided on the housing 1. The connecting plates 12 are fixedly connected to the housing 1 and are used for the installation and fixation of the current transformer assembly.

[0039] Beneficial effects:

[0040] In the actual production process, after the coil is wound, the outer shell 1 is fastened to the outside of the coil to protect the coil, prevent the coil from being immersed in water and prevent the coil from being corroded, and ensure the safety of the coil in use. Then, the outer shell 1 is fixed by the sleeve 11 to lock the structure of the outer shell 1 and prevent the outer shell 1 from loosening. The connecting plate 12 is fixedly connected and installed on the outside of the outer shell 1 to facilitate the installation of the current transformer assembly and fix the current transformer assembly in the working position.

[0041] A coil winding device for a current transformer assembly, such as Figure 2 As shown, the coil winding device includes a machine base 2, on which a guide trough 21 is fixedly installed to guide the coil of the current transformer assembly. A cylinder 22 is fixedly installed on one side of the guide trough 21. The output end of the cylinder 22 faces the winding station. The output end of the cylinder 22 extends to push the coil into the winding station for subsequent winding operations.

[0042] The machine base 2 is provided with an installation groove 24, and a jig assembly 3 is slidably provided in the installation groove 24. Two pads 25 are fixedly provided on the machine base 2 and on one side of the installation groove 24. A slide table 4 is fixedly provided on the pads 25. A stand 5 is fixedly provided on one side of the machine base 2. A discharge groove 20 is provided between the two parallel pads 25. A cylinder 26 is fixedly provided on one side of the pads 25.

[0043] like Figure 3 , Figure 4 , Figure 7 As shown, a pneumatic clamp 27 is fixedly installed at the output end of cylinder 26 to hold copper wire. A cutter 28 is fixedly installed on one side of the pneumatic clamp 27. The cutter 28 is fixedly installed on one side of the gripper of the pneumatic clamp 27 to cut the copper wire held by the gripper. A limit rod 29 is fixedly installed in the mounting groove 24. The limit rod 29 has symmetrically distributed oblique guide grooves. Cylinder 3 23 is fixedly installed below the mounting groove 24.

[0044] The output end of cylinder 23 faces the fixture assembly 3 and is used to move the fixture assembly 3 up and down to adjust the position of the coil. When the coil is parallel to the upper surface of the fixture assembly 3 and the machine base 2, the coil is fed to the surface of the fixture assembly 3. Then the output end of cylinder 23 moves upward to control the fixture assembly 3 to move upward and towards the stand 5, so that the coil moves to the winding processing area.

[0045] like Figure 5 As shown, the fixture assembly 3 includes a support plate 31 and a side plate 32. The support plate 31 is fixedly installed at the output end of the cylinder 23. The support plate 31 is vertically moved by the cylinder 23. A material support ring 33 is rotatably provided on the support plate 31. An opening groove 311 is provided on the side of the support plate 31 away from the side plate 32. The opening groove 311 passes through the material support ring 33.

[0046] In this embodiment, when the opening slot 311 is located in the coil winding processing area, in order to improve the passage of the winding assembly, after the winding assembly passes through the coil and the opening slot 311, the copper wire is evenly wound on the coil, and the winding is automated. The winding ring 47 in the winding assembly is positioned to avoid the winding ring 47 from deviating and improve the winding accuracy.

[0047] The pallet 31 has a shaft groove 312 located at the center of the material support ring 33, and a straight groove 313 is provided on the shaft groove 312. One end of the straight groove 313 is provided with an inclined groove 314. The side plate 32 is fixedly connected to one side of the pallet 31. The side plate 32 has symmetrically distributed L-shaped grooves 34. A moving shaft 35 is slidably provided in the L-shaped groove 34. A limiting roller 36 is rotatably provided on the moving shaft 35.

[0048] A pull plate 37 is rotatably mounted on the moving shaft 35, and a cylinder 38 is fixedly mounted on the side plate 32. The output end of the cylinder 38 is rotatably connected to the two pull plates 37. A cylinder 39 is fixedly mounted on the side plate 32. The output ends of the cylinder 39 and the cylinder 38 face the same direction. The cylinder 39 is used to push the coil that has been wound and processed, push the coil into the discharge groove 20, and discharge it from the discharge groove 20.

[0049] When the pallet 31 moves into the mounting groove 24, and then the limiting rod 29 is located in the opening groove 311, as the pallet 31 retracts at the output end of the cylinder 23, the pallet 31 moves back into the mounting groove 24 from top to bottom. The two ends of the material support ring 33 slide along the inclined guide groove on the limiting rod 29 until the two ends of the material support ring 33 are flush with the side wall of the opening groove 311, ensuring that the material support ring 33 automatically resets.

[0050] With the limit rod 29 limiting the material support ring 33 and the positioning plate 31 resetting accurately, the loading and unloading accuracy of the current transformer assembly coil is high. At the same time, it ensures that the initial loading position of the current transformer assembly coil is the same, improving the loading accuracy, positioning the coil, ensuring the accuracy of the winding operation of the current transformer assembly, reducing loading and unloading errors during the automated winding process, and ensuring the stability of the coil winding device during the winding process of the current transformer assembly.

[0051] like Figures 6-9 As shown, a through groove 41 is provided at one end of the slide table 4, and a mounting base 42 is slidably provided on the slide table 4. An array of shafts 43 are rotatably connected to the mounting base 42. Gears 44 are fixedly provided on the shafts 43. A motor 430 is fixedly provided at one end of the shafts 43. The output end of the motor 430 is fixedly connected to one end of the shafts 43, driving the shafts 43 and the gears 44 on them to rotate. A winding ring 47 is rotatably provided on the mounting base 42. A toothed ring 400 is fixedly provided on the outer side of the winding ring 47. The toothed ring 400 meshes with multiple gears 44.

[0052] A limiting groove 49 is provided on the inner side of the winding ring 47. A raw material wire rod 40 is fixedly installed on the winding ring 47. A copper wire roller is fitted on the raw material wire rod 40. Guide grooves 48 are provided on both sides of the winding ring 47. The guide grooves 48 are slidably connected to the mounting base 42 to support the rotation of the winding ring 47. A rectangular frame 45 is fixedly provided on one side of the mounting base 42. An array of support rollers 46 are rotatably provided on the rectangular frame 45. The support rollers 46 rotate inside the winding ring 47. The support rollers 46 are slidably connected to the limiting groove 49 to support the rotation of the winding ring 47.

[0053] In this embodiment, the number of support rollers 46 is set to four, and the number of gears 44 is set to three.

[0054] The winding ring 47 has a through groove 401. When the slide table 4 drives the mounting base 42 to move toward the fixture assembly 3, the fixture assembly 3 and the coil fixed on it are both located in the through groove 401. After the fixture assembly 3 and the coil pass through the through groove 401, the winding ring 47 rotates in the open groove 311, and the winding ring 47 drives the copper wire roller to pass through the coil. The copper wire is wound onto the coil one turn at a time in sequence.

[0055] like Figure 10 , Figure 11 As shown, an installation rod 51 is fixedly installed on the upright frame 5. A horizontal groove 52 is opened at the end of the installation rod 51. A fixed shaft 53 is fixedly installed in the horizontal groove 52. A spring 55 is fixedly connected to one side of the fixed shaft 53. A movable frame 54 is horizontally slidably installed in the horizontal groove 52. A sliding groove 57 is opened on the movable frame 54. The fixed shaft 53 is slidably installed in the sliding groove 57. One end of the spring 55 is fixedly connected to the end of the sliding groove 57. An inner roller 56 is rotatably installed on the movable frame 54.

[0056] A second motor (not shown in the figure) is fixedly installed on the movable frame 54. The output end of the second motor is fixedly connected to one end of the inner roller 56, driving the inner roller 56 to rotate.

[0057] As the support plate 31 moves upward until the fixed shaft 53 enters the shaft groove 312, during the process of the fixed shaft 53 reaching the bottom of the shaft groove 312, one end of the moving frame 54 is slidably connected to the inclined groove 314, causing the inner roller 56 at the other end of the moving frame 54 to move towards the inner wall of the coil. The cylinder 4 38 pushes the two pull plates 37 to move, causing the moving shaft 35 to move horizontally within the L-shaped groove 34. The limiting roller 36 is attached to the outer wall of the coil, and the coil is locked by the inner roller 56 and the limiting roller 36. The inner roller 56 is used to drive the coil to rotate, which is coordinated with the winding process.

[0058] After the copper wire of one coil is wound, the pneumatic clamp 27 is moved horizontally by the cylinder 26. The pneumatic clamp 27 then holds the copper wire and cuts it with the cutter 28. Then the fixture assembly 3 moves down to release the coil. The coil is then pushed to move by the cylinder 39 and enters the discharge trough 20 for automatic unloading. The next coil moves up into the winding ring 47 and rotates. At this time, the end of the copper wire is fixed by the pneumatic clamp 27. The winding ring 47 rotates four to six times, and the copper wire is wound four to six turns on the coil. Then the pneumatic clamp 27 is released from fixing the copper wire, and the copper wire is continuously wound. Coils are processed in batches in sequence.

[0059] In this embodiment, the cylinders are of model HB-DJ801, and the slides are of model uFS20-60.

[0060] The working principle is as follows:

[0061] When the coil is pushed above the support plate 31, the support plate 31 moves upward under the driving action of the cylinder 23 until the fixed shaft 53 enters the shaft groove 312. During the process of the fixed shaft 53 reaching the bottom of the shaft groove 312, one end of the moving frame 54 is slidably connected to the inclined groove 314, so that the inner roller 56 at the other end of the moving frame 54 moves toward the inner wall of the coil. The cylinder 38 pushes the two pull plates 37 to move, so that the moving shaft 35 moves horizontally in the L-shaped groove 34. The limiting roller 36 is attached to the outer wall of the coil, and the coil is locked by the inner roller 56 and the limiting roller 36.

[0062] Furthermore, the material support ring 33 supports the current transformer assembly, which facilitates the rotation of the current transformer assembly and reduces rotational resistance. Then, the inner roller 56 drives the coil to rotate, causing the coil of the current transformer assembly to rotate, and the winding ring 47 is used to perform the winding operation.

[0063] At this time, the slide table 4 drives the mounting base 42 to move towards the fixture assembly 3. The coil is located at the through slot 401 of the winding ring 47. The fixture assembly 3 and the coil fixed on it are both located at the through slot 401. After the fixture assembly 3 and the coil pass through the through slot 401, they rotate through the gear 44. The gear 44 cooperates with the gear ring 400 to carry out precise transmission, which can control the rotation accuracy of the winding ring 47, so that the winding ring 47 rotates in the opening slot 311. Under the support of the gear 44 and the support roller 46, the winding ring 47 maintains stable rotation. The winding ring 47 drives the copper wire roller to pass through the coil, and the copper wire is wound on the coil. At the same time as the winding ring 47 rotates, the coil rotates simultaneously under the drive of the inner roller 56 until the copper wire is wound on the coil one turn at a time in sequence, forming the coil of the finished current transformer assembly.

[0064] After winding is completed, the pneumatic clamp 27 is moved horizontally by the second cylinder 26. Then, the pneumatic clamp 27 clamps the copper wire and the cutter 28 cuts the copper wire. Then, the fixture assembly 3 moves down to release the fixation of the coil. The coil is pushed to move by the fifth cylinder 39 and enters the discharge groove 20 for automatic feeding. Then, the next coil moves up to the winding ring 47 and the winding ring 47 rotates. At this time, the end of the copper wire is fixed by the pneumatic clamp 27. The winding ring 47 rotates four to six times and then the copper wire is wound four to six turns on the coil. Then, the pneumatic clamp 27 is controlled to release the fixation of the copper wire and then the copper wire is continuously wound. The coils are processed in batches in sequence.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A coil winding device for a current transformer assembly, the coil winding device comprising a machine base (2), characterized in that, The machine base (2) is fixedly provided with a feed trough (21) for conveying the coil. The current transformer assembly includes a housing (1), a coil is fixed inside the housing (1), a sleeve (11) is provided on the housing (1), a connecting screw (13) for locking is fixed on the sleeve (11), and a connecting plate (12) for installation is symmetrically provided on the housing (1). The machine base (2) is provided with an installation slot (24). Two pads (25) are fixed on the machine base (2) and on one side of the installation slot (24). A cylinder (26) is fixed on one side of the pad (25). A pneumatic clamp (27) is fixed at the output end of the cylinder (26). A cutter (28) is fixed on one side of the gripper of the pneumatic clamp (27). The fixture assembly (3) slides in the mounting groove (24). The fixture assembly (3) includes a support plate (31) and a side plate (32). The support plate (31) is fixed to the output end of the cylinder (23). A material support ring (33) for supporting the coil rotates on the support plate (31). The pallet (31) has an opening groove (311) on the side away from the side plate (32). The opening groove (311) passes through the material support ring (33). The end of the material support ring (33) is slidably connected to the inclined guide groove. The opening groove (311) cooperates with the limiting rod (29). The pallet (31) is provided with a shaft groove (312), which is located at the center of the material support ring (33). The shaft groove (312) is provided with a straight groove (313), and one end of the straight groove (313) is provided with a beveled groove (314). The side plate (32) is fixed to one side of the pallet (31). The side plate (32) is provided with symmetrical L-shaped grooves (34). A movable shaft (35) slides in the L-shaped groove (34). A limiting roller (36) for fixing the outer side of the coil rotates on the movable shaft (35). A stand (5) is fixed on one side of the machine base (2), and an mounting rod (51) is fixed on the stand (5). A horizontal groove (52) is provided at the end of the mounting rod (51). A fixed shaft (53) for limiting is fixed in the horizontal groove (52). A spring (55) is fixed on one side of the fixed shaft (53). A movable frame (54) is horizontally slidably provided in the horizontal groove (52). A guide groove (57) is provided on the movable frame (54). The fixed shaft (53) is slidably installed in the guide groove (57). One end of the spring (55) is fixed to the end of the slide groove (57). An inner roller (56) for fixing the inner side of the coil is rotatably mounted on the moving frame (54). A second motor is fixed on the moving frame (54). The output end of the second motor is fixedly connected to the inner roller (56). The fixed shaft (53) is positioned and connected to the shaft groove (312). One end of the moving frame (54) is slidably connected to the inclined groove (314).

2. The coil winding device for a current transformer assembly according to claim 1, characterized in that, A cylinder (22) for transferring material is fixed on one side of the guide groove (21), a discharge groove (20) is provided between the two pads (25), a limiting rod (29) for positioning the initial position of the coil is fixed in the mounting groove (24), an inclined guide groove is symmetrically provided on the limiting rod (29), and a cylinder (23) is fixed below the mounting groove (24).

3. The coil winding device for a current transformer assembly according to claim 1, characterized in that, A pull plate (37) rotates on the moving shaft (35), and a cylinder four (38) is fixed on the side plate (32). The output end of the cylinder four (38) is rotatably connected to the two pull plates (37). A cylinder five (39) for unloading is fixed on the side plate (32). The output ends of the cylinder five (39) and the cylinder four (38) face the same direction.

4. The coil winding device for a current transformer assembly according to claim 1, characterized in that, A slide (4) is fixed on the pad (25). One end of the slide (4) is provided with a through groove (41). A mounting seat (42) slides on the slide (4). An array of shafts (43) rotates on the mounting seat (42). A gear (44) is fixed on the shaft (43). A motor (430) is fixed on the mounting seat (42). The output end of the motor (430) is fixedly connected to the shaft (43). A winding ring (47) rotates on the mounting seat (42).

5. The coil winding device for a current transformer assembly according to claim 4, characterized in that, A toothed ring (400) is fixed on the outer side of the winding ring (47), and the toothed ring (400) meshes with multiple gears (44). A limiting groove (49) is provided on the inner side of the winding ring (47). A raw material wire rod (40) is fixed on the winding ring (47). Guide grooves (48) are provided on both sides of the winding ring (47). The guide grooves (48) are slidably connected to the mounting base (42). A rectangular frame (45) is fixed on one side of the mounting base (42).

6. The coil winding device for a current transformer assembly according to claim 5, characterized in that, The rectangular frame (45) has an array of support rollers (46) for supporting the winding ring (47) rotating on it. The support rollers (46) rotate inside the winding ring (47). The support rollers (46) are slidably connected to the limiting groove (49). The winding ring (47) is provided with a through groove (401).

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