A transformer with controllable winding tension

Abstract

The utility model discloses a transformer of coil winding tension controllable, including recessed board and transformer core, the transformer core sets up inside the recessed board, be provided with the drive clamping subassembly on the recessed board, the drive clamping subassembly is used for the clamping fixed connection of transformer core, be provided with detachable guide adjusting assembly on the recessed board. The utility model coil passes four transmission rollers in proper order, and after the guide roller enters the winding link, the second electric push rod can drive the up and down movement of adjusting roller, and the size of tension is adjusted through the wrap angle change of wire and adjusting roller, and the tension is promoted when the wrap angle increases, and the tension reduces when the wrap angle reduces, realizes the regulation of tension, and the threaded rod rotates through servo motor drive, and the movement frame of threaded block and bottom, guide roller reciprocate along the horizontal direction, can according to the length of transformer core, the number of turns of coil demand, accurate control coil in the winding position of core axial.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, specifically to a transformer with controllable coil winding tension. Background Technology

[0002] The winding quality of transformer coils directly affects the transformer's performance, with winding tension being a key parameter. If the tension is too low, the coil is prone to loosening, leading to excessive vibration and noise during operation. If the tension is too high, the wire is easily stretched and deformed, affecting insulation performance and mechanical strength.

[0003] According to application number CN202011330564.3, a dry-type transformer coil winding device for frequency conversion speed regulation is disclosed. The device drives the output shaft to rotate, and the drive chuck on the output shaft cooperates with the positioning chuck to fix and limit the wire coil. Under the drive of the output shaft, the wire coil is rotated to unwind the wire.

[0004] The coil winding structures in the above cases lack tension adjustment, resulting in excessive or insufficient tension when the coil is wound onto the core. Many coil winding devices use fixed guide wheels, meaning the guide component's position is not adjustable and the wire can only be guided along a single path. This structure causes coil winding to concentrate in specific areas of the transformer core, such as the middle of the core column, making it impossible to adjust the winding position according to the core length and coil turn requirements. Furthermore, the coil cannot be evenly wound onto the core, only in one location. The transformer core is often clamped using simple mechanical chuck structures, which are prone to uneven force leading to localized core deformation or loose clamping causing core displacement during winding. Therefore, we provide a transformer with controllable coil winding tension. Utility Model Content

[0005] The purpose of this invention is to provide a transformer with controllable coil winding tension to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transformer with controllable coil winding tension, comprising a concave plate and a transformer core, wherein the transformer core is disposed inside the concave plate, and a drive clamping assembly is provided on the concave plate for clamping and fixing the transformer core, and a detachable guide adjustment assembly is provided on the concave plate for adjusting the position of the coil, and a tension adjustment assembly is provided on the guide adjustment assembly for adjusting the tension of the coil.

[0007] Optionally, the drive clamping assembly includes two connecting blocks, which are respectively installed on the left and right sides of the concave plate. A first electric push rod is installed on the side of the two connecting blocks that is far apart from each other. The output end of the first electric push rod passes through the connecting block and extends to the outside of it to install a movable plate.

[0008] Optionally, a drive motor is installed on the left movable plate, and a movable plate is installed on the right movable plate. A rotating shaft is rotatably connected to the groove on the left side of the movable plate via a bearing. Pressure sensors are installed on the right end of the drive motor output shaft and the left end of the rotating shaft, both of which penetrate the groove and extend to the outside of it. A pressing block is installed on the opposite side of the two pressure sensors.

[0009] Optionally, the guide adjustment assembly includes a recessed block disposed on the rear side of the top of the recessed plate. A servo motor is mounted on the left side of the recessed block, and a threaded rod is mounted on the right end of the output shaft of the servo motor, which passes through the recessed block and extends to its exterior.

[0010] Optionally, the surface of the threaded rod is threadedly connected to a threaded block, the bottom of the threaded block is mounted with a movable frame, and two guide rollers are rotatably connected to the inner wall of the movable frame.

[0011] Optionally, the tension adjustment assembly includes two stabilizing blocks, each mounted on the back of one of the two recessed blocks. A mounting plate is mounted on the back of each stabilizing block, and four transfer rollers are disposed between the two mounting plates.

[0012] Optionally, the tops of the two mounting plates are fixedly connected by a mounting bracket, the top of which is equipped with a second electric push rod, the bottom end of which passes through the mounting bracket and extends to the outside of which an adjusting roller is mounted.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, the coil passes through four transfer rollers in sequence and then enters the winding stage via the guide roller. The second electric push rod can drive the adjusting roller to move up and down. By changing the wrap angle between the wire and the adjusting roller, the tension can be adjusted. When the wrap angle increases, the tension increases, and when the wrap angle decreases, the tension decreases, thus realizing the adjustment of tension. The servo motor drives the threaded rod to rotate, which in turn drives the threaded block and the bottom moving frame and guide roller to reciprocate in the horizontal direction. The winding position of the coil in the axial direction of the core can be precisely controlled according to the length of the transformer core and the number of coil turns required.

[0014] 2. By setting up a driving clamping component, this utility model can effectively clamp and fix the transformer core, avoiding excessive or insufficient clamping force, and allowing the clamped transformer core to rotate and wind the coil. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is a three-dimensional structural diagram of the guide adjustment component and tension adjustment component of this utility model; Figure 4 This is a three-dimensional structural schematic diagram of the guide adjustment component and tension adjustment component of this utility model from a bottom view.

[0016] In the diagram: 1. Concave plate; 100. Transformer core; 2. Drive clamping assembly; 21. Connecting block; 22. First electric push rod; 23. Moving plate; 24. Drive motor; 25. Movable plate; 26. Pressure sensor; 27. Extrusion block; 3. Guide adjustment assembly; 31. Concave block; 32. Servo motor; 33. Threaded rod; 34. Threaded block; 35. Moving frame; 36. Guide roller; 4. Tension adjustment assembly; 41. Stabilizing block; 42. Mounting plate; 43. Transfer roller; 44. Mounting frame; 45. Second electric push rod; 46. Adjusting roller; 5. Positioning block; 6. Positioning groove; 7. Fixing block; 8. Fastening bolt. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 A transformer with controllable coil winding tension includes a concave plate 1 and a transformer core 100. The transformer core 100 is disposed inside the concave plate 1. As the core substrate for coil winding, the transformer core 100 is a key component of the transformer's magnetic circuit. After the coil is wound on its surface, electromagnetic energy conversion can be realized.

[0019] A drive clamping assembly 2 is provided on the concave plate 1. The drive clamping assembly 2 includes two connecting blocks 21, which are respectively installed on the left and right sides of the concave plate 1. A first electric push rod 22 is installed on the side of the two connecting blocks 21 that is far apart from each other. The output end of the first electric push rod 22 passes through the connecting block 21 and is connected to the moving plate 23, providing linear driving force to push the moving plate 23 to move closer to or away from the transformer core 100 in the horizontal direction, thereby clamping or releasing the core. The output end of the first electric push rod 22 passes through the connecting block 21 and extends to the outside of it, where the moving plate 23 is installed. A drive motor 24 is installed on the left moving plate 23. The core function of the drive motor 24 is to provide rotational power, driving the clamped and fixed transformer core 100 to rotate uniformly around its own axis, providing a rotational basis for coil winding. A movable plate 25 is installed on the right moving plate 23. A rotating shaft is rotatably connected to the groove on the left side of plate 25 via a bearing. The right end of the output shaft of drive motor 24 and the left end of the rotating shaft both pass through the concave plate 1 and extend to its outside, where pressure sensors 26 are installed. The pressure sensors 26 detect the clamping pressure of the extrusion block 27 on the transformer core 100 in real time and feed the pressure data back to the control system. Extrusion blocks 27 are installed on opposite sides of the two pressure sensors 26. Two positioning blocks 5 are installed on the side of the moving plate 23 near the concave plate 1. A positioning groove 6 is opened on the side of the concave plate 1 near the positioning block 5 and corresponding to the position of the positioning block 5. The side of the positioning block 5 near the positioning groove 6 passes through the positioning groove 6 and extends into it, making sliding contact with the inner wall of the positioning groove 6. The cooperation of the positioning block 5 and the positioning groove 6 guides and limits the movement direction of the moving plate 23, ensuring that the moving plate 23 only moves in the horizontal direction close to or away from the core, without vertical or horizontal displacement.

[0020] A detachable guide adjustment assembly 3 is provided on the concave plate 1. The guide adjustment assembly 3 includes a concave block 31, which is located on the rear side of the top of the concave plate 1. The bottom of the concave block 31 and the top of the concave plate 1 are in contact with each other. A servo motor 32 is installed on the left side of the concave block 31. The servo motor 32 has extremely high speed and direction control precision, which can accurately control the rotation angle of the thread rod 33, and thus accurately control the movement distance of the thread block 34. The position feedback function of the servo motor 32 can ensure that the thread block 34 can stay in the set position, avoiding the coil winding position deviation caused by motor step loss, and meeting the winding position requirements of coils with different core lengths and different number of turns. The right end of the output shaft of the servo motor 32 passes through the concave block 31 and extends to its outside to install the thread rod 33. The thread structure has self-locking property. When the servo motor 32 stops working, the thread block 34 can stably stay in the current position without slipping, ensuring the stability of the coil position during the winding process. The left and right sides of the concave block 31 A fixing block 7 is installed on each side, and a fastening bolt 8 is provided on the fixing block 7 to be threadedly connected to the concave plate 1. The fixing block 7 and the fastening bolt 8 make it easy to install the concave block 31 onto the concave plate 1. Loosening the fastening bolt 8 and pulling the concave block 31 allows the concave block 31 to be removed from the concave plate 1, so that the guide adjustment component and the tension adjustment component 4 can be removed from the concave plate 1 for maintenance and repair. The surface of the threaded rod 33 is threadedly connected to a threaded block 34. The top of the threaded block 34 slides in contact with the top of the inner wall of the concave block 31, which plays a guiding role for the threaded block 34. The force of the rotation of the threaded rod 33 is converted into a force that drives the threaded block 34 to move left and right. A movable frame 35 is installed at the bottom of the threaded block 34. Two guide rollers 36 are rotatably connected to the inner wall of the movable frame 35. The coil passes between the two guide rollers 36, guiding the direction of the coil and accurately guiding the coil after tension adjustment to the winding position of the transformer core 100.

[0021] The guide adjustment assembly 3 is equipped with a tension adjustment assembly 4. The tension adjustment assembly 4 includes two stabilizing blocks 41, which are respectively installed on the back of the two recesses 31. A mounting plate 42 is installed on the back of the stabilizing block 41. Four transfer rollers 43 are arranged between the two mounting plates 42. The transfer rollers 43 are rotatably connected to the mounting plates 42 via a rotating shaft. The tops of the two mounting plates 42 are fixedly connected by a mounting bracket 44. A second electric push rod 45 is installed on the top of the mounting bracket 44. The second electric push rod 45 provides linear driving force to push the adjustment roller 46 to move up and down, changing the contact state between the coil and the adjustment roller 46. The bottom end of the second electric push rod 45 passes through the mounting bracket 44 and extends to the outside of it to install the adjustment roller 46. The adjustment roller 46 is located between the coil paths formed by the four transfer rollers 43. By moving up and down, it changes the wrap angle between the coil and itself, thereby adjusting the coil tension.

[0022] The first electric push rod 22, drive motor 24, pressure sensor 26, servo motor 32, and second electric push rod 45 are electrically connected to an external controller.

[0023] In use, the transformer core 100 is placed between the two pressing blocks 27 to make them coaxial, and then the first electric push rod 22 is activated. The first electric push rod 22 drives the pressing blocks 27 to move closer to the transformer core 100, so that the pressing blocks 27 clamp and fix the transformer core 100, and the pressure value is fed back by the pressure sensor 26. The free end of the coil material passes through four transfer rollers 43 in sequence, passes through the bottom of the adjusting roller 46, and the coil continues to pass between two guide rollers 36 inside the moving frame 35, and is finally fixed at the starting winding position of the transformer core 100. The second electric push rod 45 on the mounting frame 44 is activated. If it is necessary to increase the tension, the push rod extends and drives the adjusting roller 46 to move down, increasing the wrap angle between the coil and the adjusting roller 46, and increasing the tension through friction. If it is necessary to decrease the tension, the push rod retracts and drives the adjusting roller 46 to move up, decreasing the wrap angle and reducing the tension. Start the drive motor 24. The motor output shaft drives the transformer core 100 to rotate at a constant speed around its own axis through the left pressure sensor 26 and the extrusion block 27. According to the coil winding density requirements, the servo motor 32 works intermittently or continuously according to the preset program. For example, every 3-5 turns, the servo motor 32 drives the guide roller 36 to move slowly a short distance along the core axis. The moving distance matches the coil wire diameter to avoid coil overlap and ensure that the coil evenly covers the core surface and is not concentrated in a specific area.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer with controllable coil winding tension, characterized in that: The device includes a concave plate (1) and a transformer core (100). The transformer core (100) is disposed inside the concave plate (1). A drive clamping assembly (2) is provided on the concave plate (1). The drive clamping assembly (2) is used to clamp and fix the transformer core (100). A detachable guide adjustment assembly (3) is provided on the concave plate (1). The guide adjustment assembly (3) is used to adjust the position of the coil. A tension adjustment assembly (4) is provided on the guide adjustment assembly (3). The tension adjustment assembly (4) is used to adjust the tension of the coil.

2. The transformer with controllable coil winding tension according to claim 1, characterized in that: The drive clamping assembly (2) includes a connecting block (21). There are two connecting blocks (21) installed on the left and right sides of the concave plate (1). A first electric push rod (22) is installed on the side of the two connecting blocks (21) that is far away from each other. The output end of the first electric push rod (22) passes through the connecting block (21) and extends to the outside of it to install a moving plate (23).

3. The transformer with controllable coil winding tension according to claim 2, characterized in that: A drive motor (24) is installed on the left movable plate (23), and a movable plate (25) is installed on the right movable plate (23). A rotating shaft is rotatably connected to the groove on the left side of the movable plate (25) through a bearing. The right end of the output shaft of the drive motor (24) and the left end of the rotating shaft both pass through the concave plate (1) and extend to the outside of it, where pressure sensors (26) are installed. On the opposite side of the two pressure sensors (26), there are extrusion blocks (27).

4. The transformer with controllable coil winding tension according to claim 1, characterized in that: The guide adjustment assembly (3) includes a recess (31) which is located on the rear side of the top of the recess (1). A servo motor (32) is installed on the left side of the recess (31). The right end of the output shaft of the servo motor (32) passes through the recess (31) and extends to the outside of it, where a threaded rod (33) is installed.

5. The transformer with controllable coil winding tension according to claim 4, characterized in that: The threaded rod (33) has a threaded block (34) threadedly connected to its surface. A movable frame (35) is installed at the bottom of the threaded block (34). Two guide rollers (36) are rotatably connected to the inner wall of the movable frame (35).

6. The transformer with controllable coil winding tension according to claim 4, characterized in that: The tension adjustment assembly (4) includes two stabilizing blocks (41) and two recesses (31) are mounted on the back of the stabilizing blocks (41). The back of the stabilizing blocks (41) is mounted with mounting plates (42), and four transfer rollers (43) are arranged between the two mounting plates (42).

7. The transformer with controllable coil winding tension according to claim 6, characterized in that: The tops of the two mounting plates (42) are fixedly connected by a mounting bracket (44), on which a second electric push rod (45) is mounted. The bottom end of the second electric push rod (45) passes through the mounting bracket (44) and extends to the outside of it, where an adjusting roller (46) is mounted.

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