A winding device for transformer manufacturing with tension adjustment function

Abstract

This invention discloses a winding device for transformer production with tension adjustment function, relating to the field of transformer production technology. The winding device includes a wire feeding frame, a positioning seat, and a power seat. The wire feeding frame is equipped with several fixed shafts. Compared with current transformer production winding devices, this invention achieves dynamic adjustment of wire tension, significantly improving winding accuracy. Through the cooperation of the brake disc and brake at the end of the fixed shaft on the wire feeding frame, the friction force can be adjusted in real time according to the wire feeding speed, ensuring stable wire tension during winding and effectively avoiding problems such as loose coils, excessive tightness, or coil stacking. This invention also includes a positioning mechanism with an eccentricity correction function. During the winding process, if the transformer skeleton axis deviates, the correction component can apply a fine-tuning force to the end of the transformer skeleton to automatically compensate for the eccentricity, making the transformer skeleton axis coincide with the top rod axis again.

Description

Technical Field

[0001] This invention relates to the field of transformer manufacturing technology, specifically a winding device for transformer manufacturing with tension adjustment function. Background Technology

[0002] In the transformer manufacturing process, winding is one of the core processes. The performance of the winding device directly determines the winding accuracy, electrical performance and production efficiency of the transformer coil. As the power industry continues to raise the quality requirements of transformers, traditional winding devices for transformer production have gradually revealed many technical defects in practical applications, making it difficult to meet the production needs of high precision and high efficiency.

[0003] First, existing winding devices have significant shortcomings in their wire tension adjustment methods. Most traditional devices lack a dynamic tension adjustment mechanism, relying solely on fixed damping or manual adjustment to control the wire release speed, failing to adjust the tension in real time based on the actual wire release status. Second, in traditional winding devices, when the square shaft transformer bobbin mates with the connector of the drive device, if the connector's square slot size matches the square shaft size, parallelism can be guaranteed after mating. However, the lack of adjustment clearance makes insertion of the square shaft into the slot difficult. If the square slot size is designed to be larger than the square shaft size for easier insertion, the insertion problem is solved, but the square shaft is prone to misalignment after insertion. Workers cannot quickly align the side of the square slot with the side of the square shaft, requiring repeated manual adjustments, thus affecting installation efficiency. Finally, if the transformer bobbin becomes eccentric during winding due to mechanical vibration, insufficient clamping force, or other factors, existing winding devices cannot monitor and correct the eccentricity in real time, often requiring manual intervention after machine shutdown, which further impacts production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a winding device for transformer production with tension adjustment function, so as to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a winding device for transformer production with tension adjustment function. The winding device includes a wire feeding frame, a positioning seat, and a power seat. The wire feeding frame is equipped with several fixed shafts for arranging the wire coil. Each fixed shaft has a brake disc at its end, which rotates synchronously with the fixed shaft. Each brake disc has a brake on one side, which can contact the side of the brake disc to form friction braking. When winding the transformer bobbin, if the wire feeding speed is too fast, the brake can apply pressure to the brake disc, reducing the rotational speed of the fixed shaft through friction, thereby increasing the wire tension. When the wire tension is too high, the brake reduces the pressure on the brake disc, the rotational speed of the fixed shaft increases, and the wire tension decreases accordingly, thus achieving dynamic adjustment of the feeding tension. The positioning seat contains a positioning mechanism, and the power seat contains a rotary drive component. The rotary drive component is connected to one end of the transformer bobbin through a mounting plate and a connector. The positioning mechanism is connected to the transformer bobbin... The other end is connected to the transformer bobbin, which is fixed by a connector and a positioning mechanism. The rotary drive is the power source for the rotation of the transformer bobbin. During operation, the wire is drawn out from the coil on the fixed shaft, and after tension adjustment, it is fed to the rotating transformer bobbin to complete the winding of the transformer coil. Compared with the current winding device used in transformer production, this invention has the function of dynamic adjustment of wire tension, which effectively improves the winding accuracy of the transformer coil. On the other hand, the positioning mechanism has the function of eccentric correction. That is, during the winding process, the positioning mechanism can detect the coincidence of the axis of the transformer bobbin with the axis of the positioning mechanism in real time. When there is a deviation between the axis of the transformer bobbin and the axis of the positioning mechanism, the positioning mechanism can automatically make fine adjustments to the end of the transformer bobbin so that the axis of the transformer bobbin is re-coincident with the drive axis of the rotary drive. This prevents the wire from becoming loose or the coil from stacking due to axis deviation during the winding process. At the same time, it also avoids the tedious operation of manual alignment during machine stop, which significantly improves the winding efficiency.

[0006] Furthermore, a guiding mechanism is provided between the wire feeding frame and the transformer frame to guide the wire from the wire coil and accurately feed it onto the rotating transformer frame. The guiding mechanism includes a base and a mounting frame. The mounting frame has a guide roller, a paralleling roller, and a wire laying assembly on its side. The wire output from the wire coil passes through the guide roller, the paralleling roller, and the wire laying assembly in sequence. This invention provides several guide rollers on the mounting frame. When multiple wire coils are wound onto the transformer frame simultaneously, the wire output from each wire coil corresponds to a separate guide roller. Through the independent support and steering action of the guide rollers, the multiple strands of wire that might otherwise be close together remain separated during the initial feeding stage, preventing the wires from tangling or rubbing due to the intersection of feeding paths. Damage is prevented by using a paralleling roller to straighten and gather multiple strands of wire, ensuring that the wires enter the winding assembly horizontally. The winding assembly has a spacing adjustment function, which controls the arrangement spacing of the multiple strands of wire to adapt to the winding density requirements of different coils. Finally, the base and the mounting frame in this invention are connected by a linear telescopic element, which adjusts the height of the mounting frame. This ensures that when winding transformer frames of different diameters, the paralleling roller, the winding assembly, and the winding point of the transformer frame always remain at the same horizontal height. The wire conveying path between the paralleling roller and the transformer frame always remains horizontal, thus effectively preventing lateral stress from occurring at the bending point of the wire and avoiding surface damage.

[0007] Furthermore, the cable assembly includes a cable frame and cable blocks. A limit rod is provided inside the cable frame, and a linear drive component is provided on the side of the cable frame. Several cable blocks are provided, horizontally positioned on the limit rod. The limit rod supports and guides the cable blocks. The upper end of each cable block has an arc-shaped structure, and an adjusting pin is provided on the side of each cable block. An adjusting plate is provided on the side of each cable block, and the adjusting plate has several inclined grooves. Each adjusting pin engages with one groove for linear drive. The component is connected to several adjusting pins via an adjusting plate. When it is necessary to adjust the spacing of several wire blocks, the operator only needs to activate the linear drive component. The linear drive component drives the adjusting plate to move up and down. At this time, the adjusting plate will push several adjusting pins to move, thereby causing several wire blocks to move closer or further apart, thus achieving the purpose of adjusting the spacing of several wire blocks. Through the above technical solution, the present invention can accurately adapt to the winding requirements of coils with different diameters, and avoid wire overlap by stable spacing constraints, significantly improving the coil winding effect.

[0008] Furthermore, the positioning mechanism includes a positioning sleeve with a push rod inside. A square groove is provided at the middle position of the connector, and a square shaft is provided at the middle position of the transformer skeleton in this invention. The square shaft and the square groove are adapted to each other. During the winding process, one end of the square shaft is located in the square groove, while the push rod abuts the other end of the square shaft. This ensures that the rotary drive can control the transformer skeleton to rotate around its own axis through the mounting plate and the connector. Compared with the current winding device, this invention provides a photoelectric element inside the end of the push rod near the transformer skeleton, and a laser emitting element is provided on the side of the square groove away from the transformer skeleton. The photoelectric element is arranged along the axial direction of the push rod, and the laser emitting element is arranged along the axial direction of the connector. Before the winding work begins (i.e., before the transformer skeleton is installed between the positioning mechanism and the connector), the operator can first turn on the laser emitting element and drive the mounting plate and the connector to rotate through the rotary drive. By detecting the laser signal received by the photoelectric element, the operator can detect in advance whether the axes of the push rod and the connector remain aligned during the rotation, thus avoiding the transformer skeleton from shaking or the wire winding from shifting during the subsequent winding process.

[0009] Furthermore, the square slot at the center of the connector is larger than the square shaft to facilitate its placement. A fastening block is located on each of the four sides of the square slot, and a distance measuring element is located at both ends of each fastening block. Since "two points determine a straight line," the two distance measuring elements can detect whether the side of the square slot is parallel to the side of the square shaft. Each fastening block has a telescopic groove on the side furthest from the square slot, and a spring rod is installed within each telescopic groove. The working end of the spring rod is connected to the corresponding fastening block. The end of the telescopic groove furthest from the fastening block is connected to an external air pump. The external air pump controls the fastening block's movement towards or away from the square shaft by inflating or deflating the telescopic groove. When installing the transformer frame, the transformer frame is first lifted mechanically or manually. The axis is moved to the same height as the axis of the top rod and the axis of the connector. Then, the square shaft is placed into the square groove (at this time, the spring rod is in a naturally extended state, and there is a gap between the fastening block and the square shaft). When it is detected that the side of the square shaft is tilted relative to the side of the fastening block, the connector is driven to rotate by the rotary drive until the side of the square groove is parallel to the side of the square shaft. Then, the external air pump is turned on, and the same compressed gas is injected into the four telescopic grooves. At this time, the four fastening blocks will move towards the square shaft synchronously and apply a balanced clamping force to the square shaft, thereby tightly connecting the square shaft and the connector together. Through the above technical solution, the present invention solves the problem that it is difficult to quickly and accurately align the side of the square shaft with the side of the square groove. The entire process does not require manual alignment, which effectively improves the installation efficiency and lays the foundation for subsequent stable winding.

[0010] Furthermore, the positioning mechanism also includes a correction component, which is disposed on the side of the positioning sleeve close to the transformer skeleton. The positioning sleeve has a first cavity arranged along its axial direction and three second cavities evenly distributed outside the first cavity (the three second cavities are arranged in a ring array). The end of the top rod away from the transformer skeleton is located in the first cavity, and a first compression spring is wound around this end. The correction component has a ring structure. During the winding process of the transformer skeleton, the correction component applies a correction force to the eccentric end of the transformer skeleton to ensure that the axis of the transformer skeleton and the axis of the top rod always coincide.

[0011] Furthermore, each second cavity is equipped with a liquid guide tube. One end of the liquid guide tube located in the second cavity is wound with a second compression spring. The end of the liquid guide tube extending out of the second cavity is connected to the correction component. The positioning seat is also equipped with a hydraulic supply system. The hydraulic supply system is equipped with a first output end and a second output end. The first output end is connected to the first cavity, and the second output end is connected to the three second cavities through a shunt pipe. In this invention, the hydraulic supply system supplies hydraulic oil to the first cavity through the first output end to control the extension and retraction of the push rod. The hydraulic supply system supplies hydraulic oil to the three second cavities through the second output end to control the extension and retraction of the liquid guide tube, thereby controlling the movement of the correction component. Through the above technical solution, it is convenient for workers to pick up, place, and clamp the transformer frame.

[0012] Furthermore, the end of the square shaft is provided with a threaded joint, and the calibration assembly includes a calibration ring with three receiving slots. Each receiving slot contains a calibration frame, and each receiving slot is connected to a liquid guide pipe. The hydraulic supply system is also provided with a third output end, which is connected to the three liquid guide pipes through a diversion groove and a bellows. In this invention, the first, second, and third output ends of the hydraulic supply system are all independent. When the transformer frame is fixed together with the connector, the hydraulic supply system first supplies hydraulic oil to the first cavity through the first output end. The control rod is pressed against the threaded joint of the transformer frame. Then, the hydraulic supply system supplies hydraulic oil to the three second cavities through the second output end so that the correction ring moves towards the transformer frame until the threaded joint at the end of the square shaft is inserted into the correction ring. When the transformer frame becomes eccentric during winding, the operator can supply hydraulic oil to the three guide pipes through the third output end of the hydraulic supply system so that the three correction frames extend to the same length. Under the force of the three correction frames, the position of the transformer frame is corrected and finely adjusted to ensure that the axis of the transformer frame coincides with the axis of the control rod again.

[0013] Furthermore, a third compression spring is wound around one end of the calibration frame located in the receiving groove, and a sensing pin is provided at the end of the calibration frame extending out of the receiving groove. The sensing pin is connected to the calibration frame through a fourth compression spring, and a piezoelectric piece is provided at the end of the sensing pin near the fourth compression spring. In the normal winding process of the transformer skeleton in this invention, the hydraulic supply system delivers a small amount of hydraulic oil to the three guide pipes so that the three calibration frames are close to the threaded joint of the transformer skeleton, but not in contact with the threaded joint of the transformer skeleton (while the sensing pin is in contact with the threaded joint of the transformer skeleton). At this time, the operator can monitor in real time whether the axis of the transformer skeleton is eccentric during rotation by detecting the electrical signal generated by the piezoelectric piece. When the axis of the transformer skeleton is eccentric, the hydraulic supply system increases the hydraulic oil delivered to the three guide pipes so that the three calibration frames apply a corrective force to the threaded joint of the transformer skeleton, and perform fine-tuning of the position of the transformer skeleton to ensure that the subsequent winding effect meets the standard.

[0014] Furthermore, the material hardness of the sensing pin is lower than that of the threaded joint to avoid damage to the threaded joint by the sensing pin during the winding process of the transformer frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Compared with the current winding device used in transformer production, the present invention realizes dynamic adjustment of wire tension, which greatly improves the winding accuracy. By cooperating with the brake disc at the end of the fixed shaft on the wire feeding frame, the friction can be adjusted in real time according to the wire feeding speed. When the feeding is too fast, the brake increases pressure to reduce the rotation speed of the fixed shaft to increase the tension. When the tension is too high, the brake depressurizes to increase the rotation speed to reduce the tension. By dynamically adjusting the wire tension, the tension of the wire is kept stable during the winding process, which effectively avoids problems such as loose coils, excessive tightness, or coil stacking.

[0017] 2. The present invention also includes a positioning mechanism, which fixes the transformer skeleton by cooperating with the top rod and the connector. During the winding process, if the axis of the transformer skeleton deviates, the correction component in the positioning mechanism applies a fine adjustment force to the end of the transformer skeleton to automatically compensate for the eccentricity and make the axis of the transformer skeleton and the axis of the top rod coincide again. This process does not require stopping the machine for manual alignment, which reduces winding defects and improves work efficiency. In addition, the present invention also includes a laser emitting element and a photoelectric element, which can detect whether the axes of the top rod and the connector remain coincident during rotation before winding, thus avoiding the risk of subsequent shaking in advance.

[0018] 3. Finally, the present invention includes a fastening block inside the connector and a wiring assembly on the guide mechanism. The parallelism between the square shaft and the side of the square slot can be detected by the ranging element on the fastening block. After being adjusted to parallelism with the rotary drive component, the fastening block is driven by an external air pump to apply a balanced clamping force to the square shaft of the transformer frame. This effectively solves the problem that the side of the square shaft is difficult to quickly and accurately align with the side of the square slot, laying the foundation for subsequent stable winding. The wiring assembly can freely adjust the spacing of several wiring blocks through the linear drive component, thereby accurately adapting to different coil winding densities, effectively avoiding wire overlap, and further ensuring winding uniformity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the wire feeding frame structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the guiding mechanism structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the cable assembly structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the positioning seat of the present invention;

[0024] Figure 6 This is a schematic diagram of the transformer frame structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the positioning mechanism structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the correction ring of the present invention;

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the structure of section A;

[0028] Figure 10 This is a schematic diagram of the internal structure of the connector of the present invention;

[0029] Figure 11 This is a schematic diagram showing the connection between the fastening block and the connector of the present invention;

[0030] Figure 12 This is a schematic diagram of the square shaft initially inserted into the connector according to the present invention.

[0031] In the diagram: 1. Wire feeding frame; 11. Fixed shaft; 12. Brake disc; 13. Brake; 2. Wire reel; 3. Guide mechanism; 31. Base; 32. Mounting frame; 33. Guide roller; 34. Parallel roller; 35. Wire laying assembly; 351. Wire laying frame; 352. Limiting rod; 353. Wire laying block; 354. Adjusting plate; 355. Linear drive component; 4. Positioning seat; 41. Hydraulic supply system; 42. Positioning mechanism; 421. Positioning sleeve; 422. Top rod; 4221. Photoelectric element; 423. Correction ring; 4231. Correction frame; 4232. Sensing pin; 424. Liquid guide pipe; 425. Diverter pipe; 426. Diverter groove; 5. Transformer frame; 51. Square shaft; 6. Power seat; 61. Connector; 611. Laser emitting element; 612. Fastening block; 613. Spring rod. Detailed Implementation

[0032] 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.

[0033] Example: Figures 1-12As shown, the present invention provides a technical solution: a winding device for transformer production with tension adjustment function. The winding device includes a pay-off frame 1, a positioning seat 4, and a power seat 6. The pay-off frame 1 is equipped with several fixed shafts 11, which are used to position the wire coil 2. Each fixed shaft 11 has a brake disc 12 at its end, which rotates synchronously with the fixed shaft 11. Each brake disc 12 has a brake 13 on one side, which can contact the side of the brake disc 12 to form friction braking. This braking is applied to the winding of the transformer frame 5. During wire unwinding, if the wire unwinding speed is too fast, the brake 13 can apply pressure to the brake disc 12, reducing the rotational speed of the fixed shaft 11 through friction, thereby increasing the wire tension. When the wire tension is too high, the brake 13 reduces the pressure on the brake disc 12, the rotational speed of the fixed shaft 11 increases, and the wire tension decreases accordingly, thus achieving dynamic adjustment of the unwinding tension. A positioning mechanism 42 is provided inside the positioning seat 4, and a rotary drive component is provided inside the power seat 6. The rotary drive component is connected to one end of the transformer frame 5 through a mounting plate and connector 61. The positioning mechanism 42 is connected to the transformer... The other end of the frame 5 is connected to the connector 61 and the positioning mechanism 42 to fix the transformer frame 5. The rotary drive is the power source for the rotation of the transformer frame 5. During operation, the wire is drawn out from the wire coil 2 on the fixed shaft 11, and after tension adjustment, it is fed to the rotating transformer frame 5 to finally complete the winding of the transformer coil. Compared with the current winding device used in transformer production, this invention has the function of dynamic adjustment of wire tension, which effectively improves the winding accuracy of the transformer coil. On the other hand, the positioning mechanism 42 has the function of eccentric correction. That is, during the winding process, the positioning mechanism 42 can detect the coincidence of the axis of the transformer frame 5 and the axis of the positioning mechanism 42 in real time. When there is a deviation between the axis of the transformer frame 5 and the axis of the positioning mechanism 42, the positioning mechanism 42 can automatically make fine adjustments to the end of the transformer frame 5 so that the axis of the transformer frame 5 is re-coincident with the drive axis of the rotary drive. This prevents the wire from becoming loose or the wire coils from stacking due to axis deviation during the winding process. At the same time, it also avoids the tedious operation of manual alignment during machine stop, which significantly improves the winding efficiency.

[0034] like Figures 1-4As shown, a guide mechanism 3 is provided between the wire feeding frame 1 and the transformer frame 5 to guide the wire from the wire coil 2 to be accurately conveyed onto the rotating transformer frame 5. The guide mechanism 3 includes a base 31 and a mounting frame 32. The mounting frame 32 is provided with a guide roller 33, a paralleling roller 34, and a wire laying assembly 35 on its side. The wire output from the wire coil 2 passes through the guide roller 33, the paralleling roller 34, and the wire laying assembly 35 in sequence. In this invention, several guide rollers 33 are provided on the mounting frame 32. When multiple wire coils 2 are wound onto the transformer frame 5 simultaneously, the wire output from each wire coil 2 corresponds to a separate guide roller 33. Through the independent support and steering action of the guide rollers 33, the multiple strands of wire that may have been close to each other are kept separated in the initial conveying stage, avoiding entanglement of the wires due to the intersection of the conveying paths. Friction damage is mitigated by the paralleling roller 34, which straightens and gathers multiple strands of wire, ensuring the wires enter the winding assembly 35 horizontally. The winding assembly 35 has a spacing adjustment function, controlling the spacing of the multiple strands to accommodate different coil winding density requirements. Finally, the base 31 and the mounting frame 32 are connected by a linear telescopic element, which adjusts the height of the mounting frame 32. This ensures that when winding transformer frames 5 of different diameters, the paralleling roller 34, the winding assembly 35, and the winding point of the transformer frame 5 remain at the same horizontal level. The wire's transport path between the paralleling roller 34 and the transformer frame 5 remains horizontal, effectively preventing lateral stress at bending points and avoiding surface damage.

[0035] like Figure 4As shown, the cable assembly 35 includes a cable tray 351 and cable blocks 353. A limit rod 352 is provided inside the cable tray 351, and a linear drive component 355 is provided on the side of the cable tray 351. Several cable blocks 353 are provided, horizontally positioned on the limit rod 352. The limit rod 352 supports and guides the cable blocks 353. The upper end of each cable block 353 has an arc-shaped structure, and an adjusting pin is provided on the side of each cable block 353. An adjusting plate 354 is provided on the side of each cable block 353, and several inclined grooves are provided on the adjusting plate 354. Each adjusting pin mates with one groove. The linear drive 355 is connected to several adjusting pins via an adjusting plate 354. When it is necessary to adjust the spacing of several wire guide blocks 353, the operator only needs to activate the linear drive 355. The linear drive 355 drives the adjusting plate 354 to move up and down. At this time, the adjusting plate 354 will push several adjusting pins to move, thereby causing several wire guide blocks 353 to move closer or further apart, thus achieving the purpose of adjusting the spacing of several wire guide blocks 353. Through the above technical solution, the present invention can accurately adapt to the winding requirements of coils with different diameters, and avoids wire overlap by stable spacing constraints, significantly improving the coil winding effect.

[0036] like Figures 5-10 As shown, the positioning mechanism 42 includes a positioning sleeve 421, inside which a push rod 422 is provided. A square groove is provided at the middle position of the connector 61. A square shaft 51 is provided at the middle position of the transformer frame 5 in this invention. The square shaft 51 and the square groove are compatible. During the winding process, one end of the square shaft 51 is located within the square groove, while the push rod 422 presses against the other end of the square shaft 51. This ensures that the rotary drive can control the transformer frame 5 to rotate around its own axis via the mounting plate and connector 61. Compared to current winding devices, this invention has a square shaft 51 located within the square groove at the end of the push rod 422 near the transformer frame 5. The unit is equipped with a photoelectric element 4221, and a laser emitting element 611 is arranged on the side of the square slot away from the transformer frame 5. The photoelectric element 4221 is arranged along the axis of the top rod 422, and the laser emitting element 611 is arranged along the axis of the connector 61. Before the winding work begins (i.e., before the transformer frame 5 is installed between the positioning mechanism 42 and the connector 61), the operator can first turn on the laser emitting element 611 and drive the mounting plate and the connector 61 to rotate through the rotation drive component. By detecting the laser signal received by the photoelectric element 4221, the operator can detect in advance whether the axes of the top rod 422 and the connector 61 remain aligned during the rotation, thus avoiding the shaking and wire roll misalignment of the transformer frame 5 during the subsequent winding process.

[0037] like Figures 10-12As shown, the square slot at the middle of connector 61 is larger than the square shaft 51 to facilitate the smooth insertion of the square shaft 51 into the square slot. A fastening block 612 is correspondingly provided on each of the four sides of the square slot. Each fastening block 612 has a distance measuring element at both ends. Since "two points determine a straight line," the two distance measuring elements can detect whether the side of the square slot is parallel to the side of the square shaft 51. Each fastening block 612 has a telescopic groove on the side away from the square slot, and a spring rod 613 is installed in each telescopic groove. The working end of the spring rod 613 is connected to the corresponding fastening block 612. The end of the telescopic groove away from the fastening block 612 is connected to an external air pump. The external air pump controls the fastening block 612 to move closer to or further away from the square shaft 51 by inflating or deflating the telescopic groove. When installing the transformer frame 5, the axis of the transformer frame 5 is first moved to be aligned with the top rod 422 by mechanical or manual lifting. The axis and connector 61 are aligned at the same height. Then, the square shaft 51 is placed into the square slot (at this time, the spring rod 613 is in a naturally extended state, and there is a gap between the fastening block 612 and the square shaft 51). When it is detected that the side of the square shaft 51 is tilted relative to the side of the fastening block 612 (e.g., Figure 12 As shown, the connector 61 is rotated by a rotary drive until the side of the square groove is parallel to the side of the square shaft 51. Then, the external air pump is turned on to fill the four telescopic grooves with the same compressed gas. At this time, the four fastening blocks 612 will move synchronously toward the square shaft 51 and apply a balanced clamping force to the square shaft 51, thereby tightly connecting the square shaft 51 and the connector 61 together. Through the above technical solution, the present invention solves the problem that it is difficult to quickly and accurately align the side of the square shaft 51 with the side of the square groove. No manual alignment is required throughout the process, which effectively improves the installation efficiency and lays the foundation for subsequent stable winding.

[0038] like Figures 5-9 As shown, the positioning mechanism 42 also includes a correction component, which is disposed on the side of the positioning sleeve 421 near the transformer frame 5. The positioning sleeve 421 has a first cavity arranged along its axial direction and three second cavities evenly distributed outside the first cavity (the three second cavities are arranged in a ring array). The end of the top rod 422 away from the transformer frame 5 is located in the first cavity, and a first compression spring is wound around this end. The correction component has a ring structure. During the winding process of the transformer frame 5, the correction component applies a correction force to the eccentric end of the transformer frame 5 to ensure that the axis of the transformer frame 5 always coincides with the axis of the top rod 422.

[0039] like Figures 5-9As shown, each second cavity is provided with a liquid guide pipe 424. One end of the liquid guide pipe 424 located in the second cavity is wound with a second compression spring. The end of the liquid guide pipe 424 extending out of the second cavity is connected to the correction component. The positioning seat 4 is also provided with a hydraulic supply system 41. The hydraulic supply system 41 is provided with a first output end and a second output end. The first output end is connected to the first cavity, and the second output end is connected to the three second cavities through a diverter pipe 425. In this invention, the hydraulic supply system 41 supplies hydraulic oil to the first cavity through the first output end to control the extension and retraction of the push rod 422. The hydraulic supply system 41 supplies hydraulic oil to the three second cavities through the second output end to control the extension and retraction of the liquid guide pipe 424, thereby controlling the movement of the correction component. Through the above technical solution, it is convenient for the staff to pick up, place and clamp the transformer frame 5.

[0040] like Figures 6-10 As shown, the end of the square shaft 51 is provided with a threaded joint. The calibration assembly includes a calibration ring 423 (the inner diameter of the calibration ring 423 is larger than the outer diameter of the threaded joint). The calibration ring 423 is provided with three receiving slots, each receiving slot is provided with a calibration frame 4231, and each receiving slot is connected to a liquid guide pipe 424. The hydraulic supply system 41 is also provided with a third output end, which is connected to the three liquid guide pipes 424 through a diversion groove 426 and a bellows. In this invention, the first output end, the second output end, and the third output end on the hydraulic supply system 41 are all independent. When the transformer frame 5 is fixed together with the connector 61, the hydraulic supply system 41 first delivers liquid to the first cavity through the first output end. Hydraulic oil is pressurized to control the push rod 422 to press against the threaded joint of the transformer frame 5. Then, the hydraulic supply system 41 delivers hydraulic oil to the three second cavities through the second output end so that the correction ring 423 moves toward the transformer frame 5 until the threaded joint at the end of the square shaft 51 is inserted into the correction ring 423. When the transformer frame 5 becomes eccentric during winding, the operator can deliver hydraulic oil to the three guide pipes 424 through the third output end of the hydraulic supply system 41 so that the three correction frames 4231 extend to the same length. Under the force of the three correction frames 4231, the position of the transformer frame 5 is corrected and finely adjusted to ensure that the axis of the transformer frame 5 is re-aligned with the axis of the push rod 422.

[0041] like Figures 8-10As shown, a third compression spring is wound around one end of the calibration frame 4231 located in the receiving groove, and a sensing pin 4232 is provided at the end of the calibration frame 4231 extending out of the receiving groove. The sensing pin 4232 is connected to the calibration frame 4231 through a fourth compression spring, and a piezoelectric piece is provided at the end of the sensing pin 4232 near the fourth compression spring. In the normal winding process of the transformer skeleton 5 in this invention, the hydraulic supply system 41 delivers a small amount of hydraulic oil to the three guide pipes 424 so that the three calibration frames 4231 are close to the threaded joint of the transformer skeleton 5, but not at the threaded joint of the transformer skeleton 5. In a non-contact state (while the sensing pin 4232 is in contact with the threaded joint of the transformer frame 5), the operator can monitor in real time whether the axis of the transformer frame 5 is eccentric during rotation by detecting the electrical signal generated by the piezoelectric plate. When the axis of the transformer frame 5 is eccentric, the hydraulic supply system 41 increases the hydraulic oil supplied to the three guide pipes 424 so that the three correction frames 4231 apply correction force to the threaded joint of the transformer frame 5 to correct and fine-tune the position of the transformer frame 5, so as to ensure that the subsequent winding effect meets the standard.

[0042] like Figure 10 As shown, the material hardness of the sensing pin 4232 is lower than that of the threaded joint to prevent the sensing pin 4232 from damaging the threaded joint during the normal winding process of the transformer frame 5.

[0043] The working principle of this invention is as follows: Before winding, the operator must first turn on the laser emitting element 611 and drive the mounting plate and connector 61 on the power base 6 to rotate via the rotary drive component. By detecting the laser signal received by the photoelectric element 4221, it can be determined in advance whether the axis of the top rod 422 and the connector 61 remains aligned during rotation. After the detection is completed, the axis of the transformer frame 5 is moved to be aligned with the top rod 422 by mechanical lifting or manual lifting. The axis and connector 61 are aligned at the same height. Then, the square shaft 51 is placed into the square slot. The ranging element on the fastening block 612 detects whether the side of the square shaft 51 is parallel to the side of the square slot. When the side of the square slot is parallel to the side of the square shaft 51, an external air pump drives the four fastening blocks 612 to apply a balanced clamping force to the square shaft 51, thus tightly connecting the square shaft 51 and connector 61 together. When the transformer frame 5 is fixed to the connector 61, the hydraulic supply system 41 supplies hydraulic oil to the first cavity through the first output end to control the push rod 422 to press against the threaded joint of the transformer frame 5. Then, the hydraulic supply system 41 supplies hydraulic oil to the three second cavities through the second output end to move the correction ring 423 towards the transformer frame 5 until the threaded joint at the end of the square shaft 51 is inserted. When the transformer frame 5 becomes eccentric during winding, the operator can supply hydraulic oil to the three guide pipes 424 through the third output end of the hydraulic supply system 41, so that the three correction frames 4231 extend to the same length. Under the force of the three correction frames 4231, the position of the transformer frame 5 is corrected and finely adjusted to ensure that the axis of the transformer frame 5 is re-aligned with the axis of the top rod 422. When winding the transformer frame 5, if the wire release speed is too fast, the brake 13 can apply pressure to the brake disc 12 to reduce the speed of the fixed shaft 11 through friction, thereby increasing the wire tension. When the wire tension is too high, the brake 13 reduces the pressure on the brake disc 12, the speed of the fixed shaft 11 increases, and the wire tension decreases accordingly, thereby realizing the dynamic adjustment of the release tension.

[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A winding device for transformer production with tension adjustment function, characterized in that: The winding device comprises a pay-off rack (1), a positioning seat (4) and a power seat (6), a plurality of fixed shafts (11) are arranged on the pay-off rack (1), the end of each fixed shaft (11) is provided with a brake disc (12), one side of each brake disc (12) is provided with a brake (13), the positioning seat (4) is provided with a positioning mechanism (42) in the inside, the power seat (6) is provided with a rotary driving part in the inside, the rotary driving part is connected with one end of a transformer skeleton (5) through a mounting disc and a connector (61), the positioning mechanism (42) is connected with the other end of the transformer skeleton (5), and the positioning mechanism (42) has an eccentric correction function; The middle position of the transformer skeleton (5) is provided with a square shaft (51), the positioning mechanism (42) comprises a positioning sleeve (421), the inside of the positioning sleeve (421) is provided with a jacking rod (422), the inside of the end of the jacking rod (422) close to the transformer skeleton (5) is provided with a photoelectric element (4221), the middle position of the connector (61) is provided with a square groove, one side of the square groove away from the transformer skeleton (5) is provided with a laser emitting element (611), the photoelectric element (4221) is arranged along the axis direction of the jacking rod (422), and the laser emitting element (611) is arranged along the axis direction of the connector (61); The positioning mechanism (42) further comprises a correction assembly, the correction assembly is arranged on the side of the positioning sleeve (421) close to the transformer skeleton (5), the positioning sleeve (421) is provided with a first cavity and a second cavity in the inside, the first cavity is arranged along the axis direction of the positioning sleeve (421), the end of the jacking rod (422) away from the transformer skeleton (5) is wound with a first compression spring and located in the first cavity, the second cavity is provided with three, three second cavities are uniformly arranged on the outside of the first cavity, a liquid guide pipe (424) is arranged in each second cavity, one end of the liquid guide pipe (424) in the second cavity is wound with a second compression spring, and the end of the liquid guide pipe (424) extending out of the second cavity is connected with the correction assembly; The positioning seat (4) is further provided with a hydraulic supply system (41) in the inside, the hydraulic supply system (41) is provided with a first output end and a second output end, the first output end is connected with the first cavity, and the second output end is connected with the three second cavities through a shunt pipe (425); The end of the square shaft (51) is provided with a threaded joint, the correction assembly comprises a correction ring (423), the correction ring (423) is provided with three receiving grooves in the inside, one correction frame (4231) is arranged in each receiving groove, each receiving groove is connected with a liquid guide pipe (424), the hydraulic supply system (41) is further provided with a third output end, and the third output end is connected with the three liquid guide pipes (424) through a shunt groove (426) and a bellows. The third compression spring is wound at one end of the correction frame (4231) in the receiving groove, the correction frame (4231) is provided with an induction pin (4232) at the end extending out of the receiving groove, the induction pin (4232) is connected with the correction frame (4231) through a fourth compression spring, and the induction pin (4232) is provided with a piezoelectric sheet at the end close to the fourth compression spring.

2. The winding device for transformer production with tension adjustment function according to claim 1, characterized in that: The fixed shaft (11) is provided with a wire coil (2), a guiding mechanism (3) is arranged between the wire reel (1) and the transformer skeleton (5), the guiding mechanism (3) comprises a base (31) and a mounting frame (32), the mounting frame (32) is provided with a guiding roller (33), a splicing roller (34) and a wire arranging assembly (35) at the side end, and the base (31) and the mounting frame (32) are connected through a linear expansion element.

3. The winding device for transformer production with tension adjustment function according to claim 2, characterized in that: The wire arranging assembly (35) comprises a wire arranging frame (351) and a wire arranging block (353), the wire arranging frame (351) is internally provided with a limiting rod (352), the wire arranging frame (351) is provided with a linear driving element (355) at the side end, the wire arranging block (353) is provided with a plurality of wire arranging blocks (353), the plurality of wire arranging blocks (353) are horizontally arranged on the limiting rod (352), the upper end of each wire arranging block (353) is in an arc-shaped structure, the side end of each wire arranging block (353) is provided with an adjusting pin, and the linear driving element (355) is connected with the plurality of adjusting pins through an adjusting plate (354).

4. The winding device for transformer production with tension adjustment function according to claim 1, characterized in that: The size of the square groove is greater than that of the square shaft (51), one fastening block (612) is arranged on each side of the square groove, distance measuring elements are arranged at both ends of each fastening block (612), each fastening block (612) is provided with an extension slot away from the square groove, a spring rod (613) is arranged in each extension slot, the working end of the spring rod (613) is connected with the corresponding fastening block (612), and the end, away from the fastening block (612), of the extension slot is in communication with an external air pump.

5. The winding device for transformer production with tension adjustment function according to claim 1, characterized in that: The material hardness of the induction pin (4232) is lower than that of the threaded joint.

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