Winding device with tension adjusting function for transformer production

Abstract

The invention discloses a winding device with a tension adjusting function for transformer production, and relates to the technical field of transformer production, the winding device comprises a pay-off rack, a positioning seat and a power seat, the pay-off rack is provided with a plurality of fixed shafts, and the fixed shafts are arranged on the positioning seat; compared with an existing winding device for transformer production, dynamic adjustment of wire tension is achieved, winding precision is greatly improved, friction force can be adjusted in real time according to the wire pay-off speed through cooperation of the brake disc at the end of the fixed shaft on the pay-off frame and the brake, it is ensured that the tension degree of the wire is stable in the winding process, and the winding efficiency is improved. The winding machine is further provided with a positioning mechanism, the positioning mechanism has an eccentricity correction function, in the winding process, if the axis of the transformer framework deviates, fine adjustment force can be applied to the end of the transformer framework through a correction assembly, so that eccentricity is automatically compensated, and the winding accuracy is improved. And the axis of the transformer framework and the axis of the ejector rod coincide again.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer production, and particularly relates to a winding device with tension adjustment function for transformer production. BACKGROUND

[0002] In the process of transformer production, winding is one of the core processes, and the performance of the winding device directly determines the winding precision, electrical performance and production efficiency of the transformer coil. With the continuous improvement of the quality requirements of the power industry on transformers, the traditional winding device for transformer production gradually exposes many technical defects in actual application, and it is difficult to meet the production requirements of high precision and high efficiency.

[0003] Firstly, the wire tension adjustment mode of the existing winding device has obvious defects. Most traditional devices lack a dynamic tension adjustment mechanism, and only control the unwinding speed through fixed damping or manual adjustment, which cannot adjust the tension in real time according to the actual unwinding state of the wire. Secondly, in the traditional winding device, when the connector of the square shaft transformer framework cooperates with the driving device, if the size of the square slot of the connector is consistent with the size of the square shaft, although the parallelism after cooperation can be ensured, it is difficult to operate when the square shaft is inserted into the square slot because there is no adjustment gap. If the size of the square slot is designed to be larger than the size of the square shaft for easy insertion, although the insertion problem is solved, the square shaft is easy to deviate after being inserted, and it is difficult for the workers to quickly align the side surface of the square slot with the side surface of the square shaft, so manual adjustment needs to be repeated, which further affects the installation efficiency. Finally, in the winding process, if the transformer framework is eccentric due to mechanical vibration, insufficient pressing force and other factors, the existing winding device cannot realize real-time monitoring and eccentric correction, and often needs to be manually processed after stopping, which further affects the production efficiency. SUMMARY

[0004] The present application aims to provide a winding device with tension adjustment function for transformer production to solve the problems in the prior art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a winding device with tension adjusting function for transformer production, the winding device comprises a pay-off rack, a positioning seat and a power seat, a plurality of fixing shafts are arranged on the pay-off rack, the fixing shafts are used for arranging the wire coils, the end of each fixing shaft is provided with a brake disc, the brake disc rotates synchronously with the fixing shaft, a brake is arranged on one side of each brake disc, the brake can contact the side surface of the brake disc to form friction braking, when winding the transformer framework, if the wire pay-off speed is too fast, the brake can apply pressure to the brake disc, the rotation speed of the fixing shaft is reduced through the friction force, so that the wire tension is increased; when the wire tension is too large, the brake reduces the pressure on the brake disc, the rotation speed of the fixing shaft is restored, and the wire tension is reduced, so as to realize dynamic adjustment of the pay-off tension, the positioning mechanism is arranged in the positioning seat, the rotary driving piece is arranged in the power seat, the rotary driving piece is connected with one end of the transformer framework through the mounting disc and the connector, the positioning mechanism is connected with the other end of the transformer framework, the transformer framework is fixed through the connector and the positioning mechanism, the rotary driving piece is the power source for the rotation of the transformer framework, in work, the wire is drawn out from the wire coil on the fixing shaft, is conveyed to the rotating transformer framework after tension adjustment, and finally the winding of the transformer coil is completed, compared with the winding device for transformer production at present, the winding device has the wire tension dynamic adjustment function on the one hand, the winding precision of the transformer coil is effectively improved, on the other hand, the positioning mechanism has the eccentricity correction function, that is, the axis of the transformer framework coincides with the axis of the positioning mechanism in real time through the positioning mechanism during the winding process of the transformer framework, when there is deviation between the axis of the transformer framework and the axis of the positioning mechanism, the positioning mechanism can automatically fine tune the end of the transformer framework, so that the axis of the transformer framework coincides with the driving axis of the rotary driving piece again, prevents the wire from being wound loosely, the turns are stacked and other phenomena caused by the axis deviation during the winding process, and simultaneously avoids the tedious operation of manual alignment during shutdown, and the winding work efficiency is significantly improved.

[0006] Further, the guiding mechanism is arranged between the pay-off rack and the transformer skeleton for guiding the wire to be precisely conveyed to the rotating transformer skeleton after being output from the wire coil, the guiding mechanism comprises a base and a mounting rack, the side end of the mounting rack is provided with a guide roller, a splicing roller and a wire arranging assembly, the wire output from the wire coil passes through the guide roller, the splicing roller and the wire arranging assembly in sequence, the mounting rack is provided with a plurality of guide rollers, when a plurality of wire coils are used to simultaneously wind the wire to the transformer skeleton, the wire output from each wire coil corresponds to a guide roller, the independent support and turning of the guide rollers enable the multiple wires that may be close to each other to be kept in a separated state in the initial conveying stage, so as to avoid the winding or friction damage of the wires due to the crossing of the conveying path, the splicing roller is used to regulate and converge the multiple wires, and the wires are ensured to enter the wire arranging assembly in a horizontal state, the wire arranging assembly has a spacing adjusting function, the spacing of the multiple wires is controlled by the wire arranging assembly to adapt to the winding density requirements of different coils, finally, the base and the mounting rack are connected by a linear expansion element, the height of the mounting rack is adjusted by the linear expansion element, so as to ensure that the splicing roller, the wire arranging assembly and the winding point of the transformer skeleton always keep the same horizontal height when winding the wires to the transformer skeletons of different diameters, and the conveying path of the wires between the splicing roller and the transformer skeleton always keeps horizontal, so as to effectively prevent the lateral stress of the wires at the bending point and avoid the skin damage phenomenon.

[0007] Further, the wire arranging assembly comprises a wire arranging rack and a wire arranging block, the wire arranging rack is internally provided with a limiting rod, the side end of the wire arranging rack is provided with a linear driving element, a plurality of wire arranging blocks are arranged on the limiting rod in a horizontal manner, the limiting rod supports and guides the plurality of wire arranging blocks, the upper end of each wire arranging block is in an arc structure, and the side end of each wire arranging block is provided with an adjusting pin, the side end of the wire arranging block is provided with an adjusting plate, a plurality of inclined grooves are arranged on the adjusting plate, each adjusting pin is matched with a groove, the linear driving element is connected with the plurality of adjusting pins through the adjusting plate, when it is necessary to adjust the spacing of the plurality of wire arranging blocks, the operator only needs to start the linear driving element, the adjusting plate is driven to move up and down by the linear driving element, at this time, the adjusting plate drives the plurality of adjusting pins to move, and in turn drives the plurality of wire arranging blocks to move close to or away from each other, so as to achieve the purpose of adjusting the spacing of the plurality of wire arranging blocks, through the above technical scheme, on the one hand, the winding requirements of different diameter coils can be accurately adapted, and on the other hand, the overlapping of the wire turns is avoided through stable spacing constraint, and the winding effect of the coil is significantly improved.

[0008] Further, the positioning mechanism comprises a positioning sleeve, a top rod is arranged inside the positioning sleeve, a square slot is arranged at the middle position of the connector, a square shaft is arranged at the middle position of the transformer framework in the application, the square shaft and the square slot are matched, in the winding process, one end of the square shaft is located in the square slot, and the other end of the square shaft is pressed by the top rod, so as to ensure that the rotary drive part can control the transformer framework to rotate around the axis by the mounting disc and the connector, compared with the current winding device, an optoelectronic element is arranged inside the end of the top rod close to the transformer framework, a laser emitting element is arranged on the side of the square slot away from the transformer framework, the optoelectronic element is arranged along the axis direction of the top rod, and the laser emitting element is arranged along the axis direction of the connector, when the winding work has not started (that is, the transformer framework is not installed between the positioning mechanism and the connector), the staff can first start the laser emitting element, and drives the mounting disc and the connector to rotate through the rotary drive part, through detecting the laser signal received by the optoelectronic element, the staff can find out in advance whether the axis of the top rod and the connector always keeps coincident in the rotating process, so that the shaking and turn displacement of the transformer framework in the subsequent winding process are avoided.

[0009] Further, the size of the square slot arranged at the middle position of the connector is greater than the size of the square shaft, so that the square shaft can be smoothly put into the square slot, one fastening block is arranged on each of the four sides of the square slot, one distance measuring element is arranged at each end of each fastening block, because "two points determine a straight line", so that whether the side of the square slot and the side of the square shaft are parallel can be detected through the two distance measuring elements, a telescopic slot is arranged on the side of each fastening block away from the square slot, a spring rod is arranged in each telescopic slot, the working end of the spring rod is connected with the corresponding fastening block, and the end of the telescopic slot away from the fastening block is connected with an external air pump in communication. The fastening block is controlled to move close to or away from the square shaft through the air charge and discharge of the external air pump. In the installation of the transformer framework, the axis of the transformer framework is first moved to the same height as the axis of the top rod and the axis of the connector through mechanical lifting or manual lifting and the like, then the square shaft is put into the square slot (at this time, the spring rod is in a natural stretching state, and a gap is left between the fastening block and the square shaft), when it is detected that the side of the square shaft is in an inclined state relative to the side of the fastening block, the connector is driven to rotate through the rotary drive part until the side of the square slot is parallel to the side of the square shaft, then the external air pump is started, the same compressed gas is filled into the four telescopic slots through the external air pump, at this time, the four fastening blocks will move synchronously to the square shaft, and balanced clamping force is applied to the square shaft, so that the square shaft and the connector are tightly connected together. Through the above technical scheme, the problem that the side of the square shaft is difficult to quickly and accurately align with the side of the square slot is solved, manual alignment is not needed throughout the process, the installation efficiency is effectively improved, and a foundation is laid for subsequent stable winding.

[0010] Further, the positioning mechanism further comprises a correction assembly arranged on one side of the positioning sleeve close to the transformer skeleton, the positioning sleeve is internally provided with a first cavity arranged along the axial direction thereof, and three second cavities (the three second cavities are arranged in a ring array) uniformly distributed outside the first cavity, the end of the ejector pin away from the transformer skeleton is located in the first cavity, and the end is wound with a first compression spring, the correction assembly is in a ring structure, and during the winding process of the transformer skeleton, the correction assembly applies a correction force to the eccentric end of the transformer skeleton to ensure that the axis of the transformer skeleton is always coincident with the axis of the ejector pin.

[0011] Further, a liquid guide pipe is arranged in each second cavity, one end of the liquid guide pipe in the second cavity is wound with a second compression spring, the end of the liquid guide pipe extending out of the second cavity is connected with the correction assembly, and a hydraulic supply system is further arranged in the positioning seat, the hydraulic supply system 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, in the application, the hydraulic supply system delivers hydraulic oil to the first cavity through the first output end to control the extension and contraction of the ejector pin, and the hydraulic supply system delivers hydraulic oil to the three second cavities through the second output end to control the extension and contraction of the liquid guide pipes and the movement of the correction assembly, thereby facilitating the workers to take, place and clamp the transformer skeleton.

[0012] Further, the end of the square shaft is provided with a threaded joint, the correction assembly comprises a correction ring, the correction ring is internally provided with three receiving grooves, one correction frame is arranged in each receiving groove, each receiving groove is connected with a liquid guide pipe, and the hydraulic supply system is further provided with a third output end, the third output end is connected with the three liquid guide pipes through a shunt groove and a bellows, in the application, the first output end, the second output end and the third output end of the hydraulic supply system are independent, when the transformer skeleton and the connector are fixed together, the hydraulic supply system first delivers hydraulic oil to the first cavity through the first output end to control the ejector pin to abut against the threaded joint of the transformer skeleton, then the hydraulic supply system delivers hydraulic oil to the three second cavities through the second output end to move the correction ring in the direction of the transformer skeleton until the threaded joint of the end of the square shaft is inserted into the correction ring, when the transformer skeleton is eccentric during the winding process, the operator can deliver hydraulic oil to the three liquid guide pipes through the third output end of the hydraulic supply system to make the three correction frames extend by the same length, and the position of the transformer skeleton is corrected and fine-adjusted under the action force of the three correction frames to ensure that the axis of the transformer skeleton is coincident with the axis of the ejector pin again.

[0013] Further, the correction frame is wound with a third compression spring at one end in the receiving groove, and the correction frame is provided with a sensing pin at one end extending out of the receiving groove, the sensing pin is connected with the correction frame through a fourth compression spring, and the sensing pin is provided with a piezoelectric sheet at one end close to the fourth compression spring; in the normal winding process of the transformer skeleton, the hydraulic supply system delivers a small amount of hydraulic oil into the three liquid guide pipes, so that the three correction frames are close to the threaded joints of the transformer skeleton, but are in a non-contact state with the threaded joints of the transformer skeleton (at the same time, the sensing pin is in a contact state with the threaded joints of the transformer skeleton), at this time, the operator can monitor in real time whether the axis of the transformer skeleton appears eccentric phenomenon in the rotating process by detecting the electric signal generated by the piezoelectric sheet, when the axis of the transformer skeleton appears eccentric phenomenon, the hydraulic supply system increases the hydraulic oil delivered into the three liquid guide pipes, so that the three correction frames exert a correction force on the threaded joints of the transformer skeleton, and the position of the transformer skeleton is corrected and fine-tuned, so as to ensure that the effect of subsequent winding meets the standard.

[0014] Further, the material hardness of the sensing pin is lower than that of the threaded joint, so as to avoid that the sensing pin damages the threaded joint in the winding process of the transformer skeleton.

[0015] Compared with the prior art, the beneficial effects of the present application are: 1、The present application realizes dynamic adjustment of wire tension, greatly improves winding precision, and realizes real-time adjustment of friction according to wire unwinding speed through cooperation of the brake disc at the end of the fixed shaft and the brake, when unwinding too fast, the brake is pressurized to reduce the rotating speed of the fixed shaft to increase tension, when tension is too large, the brake is depressurized to increase the rotating speed to reduce tension, through dynamic adjustment of wire tension, the stability of tension of the wire in the winding process is ensured, and problems such as loose, too tight or turn stacking of the coil are effectively avoided; 2、The present application is also provided with a positioning mechanism, the positioning mechanism fixes the transformer skeleton through cooperation of the jack and the connector, in the winding process, if the axis of the transformer skeleton deviates, the correction assembly in the positioning mechanism exerts a fine tuning force on the end of the transformer skeleton to automatically compensate for eccentricity, so that the axis of the transformer skeleton and the axis of the jack are re-coincided, the process does not need to stop for manual alignment, winding defects are reduced, and work efficiency is improved, in addition, the present application is also provided with a laser emitting element and a photoelectric element, whether the axes of the jack and the connector remain coincided in rotation can be detected before winding, and subsequent shaking risk is avoided in advance; 3、Finally, the application is provided with a fastening block in the connector, and a wire arranging assembly is arranged on the guide mechanism, the parallelism of the square shaft and the side surface of the square slot can be detected through the distance measuring element on the fastening block, and after the parallelism is adjusted through the rotary driving element, the fastening block is driven by the external air pump to apply balanced clamping force to the square shaft of the transformer skeleton, effectively solving the problem that the side surface of the square shaft is difficult to quickly and accurately align with the side surface of the square slot, laying a foundation for subsequent stable winding, and the wire arranging assembly can freely adjust the spacing of the several wire arranging blocks through the linear driving element, thereby accurately adapting to different coil winding densities, effectively avoiding coil turn overlapping, and further ensuring the uniformity of winding. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the wire unwinding frame structure of the application; Figure 3 It is a schematic diagram of the guide mechanism structure of the application; Figure 4 It is a schematic diagram of the wire arranging assembly structure of the application; Figure 5 It is a schematic diagram of the internal structure of the positioning seat of the application; Figure 6 It is a schematic diagram of the transformer skeleton structure of the application; Figure 7 It is a schematic diagram of the positioning mechanism structure of the application; Figure 8 It is a schematic diagram of the internal structure of the correction ring of the application; Figure 9 It is a schematic diagram of the Figure 8 A structure of the application; Figure 10 It is a schematic diagram of the internal structure of the connector of the application; Figure 11 It is a schematic diagram of the connection between the fastening block and the connector of the application; Figure 12 It is a schematic diagram of the initial insertion of the square shaft into the connector of the application.

[0017] In the figure: 1, pay-off stand; 11, fixed shaft; 12, brake disc; 13, brake; 2, wire coil; 3, guide mechanism; 31, base; 32, mounting stand; 33, guide roller; 34, wire combing roller; 35, wire arranging assembly; 351, wire arranging stand; 352, limiting rod; 353, wire arranging block; 354, adjusting plate; 355, straight line driving part; 4, positioning seat; 41, hydraulic supply system; 42, positioning mechanism; 421, positioning sleeve; 422, ejector rod; 4221, photoelectric element; 423, correction ring; 4231, correction stand; 4232, inductive pin; 424, liquid guide pipe; 425, shunt pipe; 426, shunt groove; 5, transformer skeleton; 51, square shaft; 6, power seat; 61, connector; 611, laser emitting element; 612, fastening block; 613, spring rod. DETAILED DESCRIPTION

[0018] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

[0019] Embodiment: as Figures 1-12As shown, the present application provides a technical scheme, a winding device with tension adjusting function for transformer production, the winding device comprises a pay-off rack 1, a positioning seat 4 and a power seat 6, a plurality of fixing shafts 11 are arranged on the pay-off rack 1, the fixing shafts 11 are used for arranging the wire coil 2, the end of each fixing shaft 11 is provided with a brake disc 12, the brake disc 12 rotates synchronously with the fixing shaft 11, and one side of each brake disc 12 is provided with a brake 13, the brake 13 can be in contact with the side of the brake disc 12 to form friction braking, when winding the transformer framework 5, if the wire pay-off speed is too fast, the brake 13 can apply pressure to the brake disc 12, the rotation speed of the fixing shaft 11 is reduced through the friction force, so that the wire tension is increased; when the wire tension is too large, the brake 13 reduces the pressure on the brake disc 12, the rotation speed of the fixing shaft 11 is restored, and the wire tension is reduced, so that the dynamic adjustment of the pay-off tension is realized, the positioning mechanism 42 is arranged in the positioning seat 4, the rotary driving part is arranged in the power seat 6, the rotary driving part is connected with one end of the transformer framework 5 through the mounting disc and the connector 61, the positioning mechanism 42 is connected with the other end of the transformer framework 5, the transformer framework 5 is fixed through the connector 61 and the positioning mechanism 42, the rotary driving part is the power source for the rotation of the transformer framework 5, in work, the wire is drawn out from the wire coil 2 on the fixing shaft 11, is conveyed to the rotating transformer framework 5 after tension adjustment, and finally the winding of the transformer coil is completed, compared with the winding device for transformer production at present, on the one hand, the winding device has the wire tension dynamic adjustment function, effectively improves the winding precision of the transformer coil, on the other hand, the positioning mechanism 42 has the eccentricity correction function, that is, the axis of the transformer framework 5 coincides with the axis of the positioning mechanism 42 in real time through the positioning mechanism 42 during the winding process of the transformer framework 5, when there is deviation between the axis of the transformer framework 5 and the axis of the positioning mechanism 42, the positioning mechanism 42 can automatically fine-tune the end of the transformer framework 5, so that the axis of the transformer framework 5 coincides with the driving axis of the rotary driving part again, prevents the wire from being wound loosely, the turns from being stacked and other phenomena caused by the axis deviation during the winding process, simultaneously avoids the tedious operation of manual alignment during shutdown, and significantly improves the winding work efficiency.

[0020] As Figures 1-4As shown, the reel stand 1 and the transformer skeleton 5 are provided with a guide mechanism 3 for guiding the wire from the wire coil 2 to be accurately conveyed to the rotating transformer skeleton 5, the guide mechanism 3 comprises a base 31 and a mounting frame 32, the mounting frame 32 is provided with a guide roller 33, a splicing roller 34 and a wire arranging assembly 35 at the side end, the wire output from the wire coil 2 passes through the guide roller 33, the splicing roller 34 and the wire arranging assembly 35 in sequence, the mounting frame 32 is provided with a plurality of guide rollers 33, when a plurality of wire coils 2 are used to wind the transformer skeleton 5 at the same time, the wire output from each wire coil 2 corresponds to a guide roller 33 independently, through the independent support and turning effect of the guide roller 33, the originally close multiple wires can be kept in a separated state in the initial conveying stage, avoiding the winding or friction damage of the wire due to the cross of the conveying path, through the splicing roller 34, the multiple wires are regularized and converged, and the wire is ensured to enter the wire arranging assembly 35 in a horizontal state, the wire arranging assembly 35 has a spacing adjustment function, the arrangement spacing of the multiple wires is controlled through the wire arranging assembly 35, so as to adapt to the winding density requirements of different coils, finally, the base 31 and the mounting frame 32 in the application are connected through a linear expansion element, the height of the mounting frame 32 is adjusted through the linear expansion element, so as to ensure that the splicing roller 34, the wire arranging assembly 35 and the winding point of the transformer skeleton 5 always keep the same horizontal height when winding the transformer skeleton 5 with different diameters, the conveying path of the wire between the splicing roller 34 and the transformer skeleton 5 always keeps horizontal, so as to effectively prevent the lateral stress of the wire at the bending point, avoiding the skin damage phenomenon.

[0021] As 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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 mechanism (42) is arranged in the positioning seat (4), the rotary driving part is arranged in the power seat (6), the rotary driving part is connected with one end of the transformer skeleton (5) through the mounting disc and the 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.

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 guide mechanism (3) is arranged between the pay-off rack (1) and the transformer skeleton (5), the guide mechanism (3) comprises a base (31) and a mounting frame (32), the side end of the mounting frame (32) is provided with a guide roller (33), a splicing roller (34) and a wire arranging assembly (35), 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 side end of the wire arranging frame (351) is provided with a linear driving part (355), a plurality of wire arranging blocks (353) are arranged, 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 structure, the side end of each wire arranging block (353) is provided with an adjusting pin, and the linear driving part (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 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 end of the jacking rod (422) close to the transformer skeleton (5) is internally 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).

5. The winding device for transformer production with tension adjustment function according to claim 4, 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 of the four sides of the square groove, distance measuring elements are arranged at the two ends of each fastening block (612), each fastening block (612) is provided with an expansion slot on the side away from the square groove, a spring rod (613) is arranged in each expansion slot, the working end of the spring rod (613) is connected with the corresponding fastening block (612), and the end of the expansion slot away from the fastening block (612) is connected with an external air pump in communication.

6. The winding device for transformer production with tension adjustment function according to claim 4, characterized in that: The positioning mechanism (42) further comprises a correction assembly arranged on one side of the positioning sleeve (421) close to the transformer frame (5), the positioning sleeve (421) is provided with a first cavity and a second cavity, the first cavity is arranged along the axis direction of the positioning sleeve (421), one end of the ejector rod (422) away from the transformer frame (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 outside the first cavity, a liquid guide pipe (424) is arranged in each second cavity, one end of the liquid guide pipe (424) located in the second cavity is wound with a second compression spring, and one end of the liquid guide pipe (424) extending out of the second cavity is connected with the correction assembly.

7. The winding device for transformer production with tension adjustment function according to claim 6, characterized in that: The positioning seat (4) is further 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 with the first cavity, and the second output end is connected with the three second cavities through a shunt pipe (425).

8. The winding device for transformer production with tension adjustment function according to claim 7, characterized in that: 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, one correction frame (4231) is arranged in each receiving groove, each receiving groove is connected with a liquid guide pipe (424), and the hydraulic supply system (41) is further provided with a third output end, the third output end is connected with the three liquid guide pipes (424) through a shunt groove (426) and a bellows.

9. The winding device for transformer manufacturing with tension adjustment function according to claim 8, characterized in that: One end of the correction frame (4231) located in the receiving groove is wound with a third compression spring, one end of the correction frame (4231) extending out of the receiving groove is provided with a sensing pin (4232), the sensing pin (4232) is connected with the correction frame (4231) through a fourth compression spring, and one end of the sensing pin (4232) close to the fourth compression spring is provided with a piezoelectric sheet.

10. The winding device for transformer manufacturing with tension adjustment function according to claim 9, characterized in that: The material hardness of the sensing pin (4232) is lower than that of the threaded joint.

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