Wire feeding device for winding transformer coil

Abstract

The invention relates to the field of transformer coil preparation, in particular to a wire feeding device for transformer coil winding, which comprises a mounting box, a wire wheel, a sliding mechanism, a rotating mechanism, a transmission part and a controller. And enameled wires are wound on the wire wheel and unwound through traction of the transmission part. The sliding mechanism drives the reel to slide axially, the rotating mechanism adjusts the rotating speed of the reel, and the sliding mechanism and the rotating mechanism are cooperatively controlled by the controller. The first camera monitors the included angle alpha between the enameled wire and the vertical plane, the second camera monitors the included angle beta between the horizontal plane, and the controller dynamically adjusts the position and the rotating speed of the wire wheel accordingly to ensure synchronization of unwinding speed and traction speed. The transmission part adopts meshing gears to drive double rubber wheels to rotate reversely, so that the traction stability is enhanced; the rotating mechanism adjusts the distance between the conical discs through the hydraulic oil pressure difference, and stepless speed change is achieved. The device solves the problems of non-uniform tension, friction damage, knotting shutdown and the like of an enameled wire in a traditional device, remarkably improves the winding efficiency and the coil quality, and is suitable for high-precision transformer production.

Description

Technical Field

[0001] The present invention relates to the field of transformer coil preparation, and particularly to a wire feeding device for winding transformer coils. Background Art

[0002] As an important device in the power system, the performance of a transformer directly depends on the accuracy and reliability of coil winding. During the manufacturing process of a transformer coil, an enameled wire needs to be unwound from a wire reel through a wire feeding device and conveyed to a winding mechanism. Traditional wire feeding devices mostly adopt a fixed wire reel combined with a mechanical transmission structure, and rely on constant tension or speed control to complete the conveyance of the enameled wire. However, such solutions have significant deficiencies: firstly, during the unwinding process of the wire reel, as the number of enameled wire layers decreases, the change in the wire reel radius makes it difficult to synchronize the unwinding speed and the traction speed of the wire, easily causing sudden changes in the tension of the enameled wire and resulting in wire breakage or damage to the insulation layer; secondly, during the conveyance of the enameled wire, the friction with the guiding components is likely to increase due to angle deviation, and surface scratches may occur after long-term use, affecting the conductivity of the coil; thirdly, the existing devices lack the ability of dynamic adjustment. When there is an axial offset of the wire reel or a fluctuation in the winding speed, it is easy to cause the enameled wire to knot and entangle, and frequent shutdowns for adjustment are required, seriously affecting production efficiency.

[0003] In addition, in the prior art, the transmission system mostly relies on mechanical gears or belts, with a limited adjustment range and difficulty in adapting to the dynamic changes in the wire reel radius, resulting in a long-term mismatch between the unwinding speed and the traction speed of the enameled wire. The core of these problems lies in the lack of real-time monitoring ability for the spatial attitude of the enameled wire and the collaborative adjustment mechanism based on multi-parameter feedback in the existing devices. Summary of the Invention

[0004] In order to solve the aforementioned technical problems, the present invention provides a wire feeding device for winding transformer coils, which solves the problems of uneven tension, friction damage, and knotting and shutdown of the enameled wire in traditional devices through the dynamic adjustment of the position and rotation speed of the wire reel by combining camera detection with a sliding mechanism and a rotating mechanism. Specifically, it is achieved through the following technical solutions.

[0005] A wire feeding device for winding transformer coils according to the present invention includes an installation box, inside which a wire reel is installed, and an enameled wire is wound around the outer surface of the wire reel; A conveying box, fixed and communicated with the installation box, with a guiding part and a transmission part inside. The guiding part is used to guide the enameled wire to unwind from the wire reel, and the transmission part is used to traction the enameled wire; A sliding mechanism configured to drive the wire reel to slide along its axial direction; A rotating mechanism configured to drive the wire reel to rotate and adjust the rotation speed of the wire reel; A first camera and a second camera, wherein the first camera monitors an angle α between the enameled wire and a vertical plane where the axis of the guide portion is located, and the second camera monitors an angle β between the enameled wire and a horizontal plane where the axis of the guide portion is located; The controller is connected to the first camera, the second camera, the sliding mechanism and the rotating mechanism signals, and adjusts the sliding stroke and the rotation speed of the wire wheel in real time based on the angle α and the angle β, so that the pulling speed of the enameled wire by the transmission part and the unwinding speed of the enameled wire from the wire wheel match.

[0006] Preferably, the sliding mechanism includes a slide rail, a first motor, a screw and a clamping block, the slide rail is fixed inside the installation box, the first motor is coaxially connected to the screw, the clamping block is slidably configured in the slide rail, the clamping block cooperates with the screw thread and is clamped with the end of the wire wheel to drive the wire wheel to slide axially.

[0007] Preferably, the wire wheel is slidably arranged on a square mounting shaft, the cross section of the square mounting shaft is square, and the shaft is driven to rotate by a second motor.

[0008] Preferably, the rotating mechanism includes two groups of symmetrically arranged first conical disks, second conical disks and a hydraulic adjustment component. The structure formed by the two groups of first conical disks and second conical disks is transmitted through a first transmission belt. The hydraulic adjustment component controls the flow of hydraulic oil through a gear pump to adjust the gap between the first conical disk and the second conical disk, thereby changing the transmission ratio to adjust the rotation speed of the reel.

[0009] Preferably, the hydraulic adjustment assembly includes two groups of symmetrically arranged hydraulic cylinders, cylindrical grooves, cylinders and rings. The ring is coaxially fixed to the second conical disk. The ring is rotatably engaged with the cylinder. The cylinder is seal-slidably configured in the cylindrical groove. The two groups of cylindrical grooves are seal-connected by a gear pump. The flow of hydraulic oil drives the cylinder to move axially to link the distance between the first conical disk and the second conical disk.

[0010] Preferably, the transmission part comprises a first driving wheel, a second driving wheel and a driving ring, the gap of the driving ring is smaller than the diameter of the enameled wire, and is driven by a second motor through a belt drive to rotate in the opposite direction to clamp and pull the enameled wire.

[0011] Preferably, the transmission part further includes a first gear and a second gear, the first gear is coaxially fixed with the first driving wheel, the second gear is coaxially fixed with the second driving wheel, and the first gear is meshed with the second gear to achieve reverse rotation.

[0012] Preferably, the guide portion comprises a mounting tube and a plurality of guide wheels, wherein the guide wheels are rotatably mounted in the through holes of the side walls of the mounting tube, and the side edges of the guide wheels are arranged at chamfered angles and are in rolling contact with the enameled wire.

[0013] Preferably, the axis of the mounting cylinder is aligned with the symmetric planes of the first driving wheel and the second driving wheel in the transmission part, so that the pulling section of the enameled wire remains horizontal.

[0014] After adopting the above technical solution, the beneficial effects of the present invention are: 1. The first camera and the second camera monitor the angle between the enameled wire and the axis of the guide part in the vertical and horizontal planes in real time, and the controller dynamically adjusts the axial sliding stroke and rotation speed of the wire wheel to ensure that the unwinding speed of the enameled wire is strictly synchronized with the pulling speed of the transmission part, eliminating the sudden change of tension caused by speed mismatch, significantly reducing the risk of enameled wire breakage or insulation wear, and avoiding unplanned downtime caused by knotting and entanglement, thereby improving continuous production efficiency.

[0015] 2. The sliding mechanism drives the clamping block to drive the wire wheel axially through the screw, and corrects the angle α to the preset range in real time; the rotating mechanism dynamically adjusts the spacing between the conical disks based on the hydraulic oil pressure difference, and changes the transmission ratio to match the wire wheel speed requirement; the two work together to adapt to the changes in the wire wheel radius as the number of unwinding layers decreases, maintain the enameled wire in a straight state, and ensure a stable conveying path.

[0016] 3. The guide part adopts a combination of mounting cylinder and chamfered guide wheel, which optimizes the contact form between the enameled wire and the guide component to rolling friction, reducing surface scratches; the transmission part drives the double rubber driving wheels to rotate in the opposite direction through symmetrical gears, increasing the contact area and friction with the enameled wire, ensuring uniform pulling and no slippage.

[0017] 4. The installation box and the conveying box are designed to be integrated, and the box door can be opened to facilitate the replacement of the reel; the controller is external and the signal is connected to each execution unit, simplifying the internal wiring. The modular structure supports quick disassembly and assembly, reduces maintenance costs, and is suitable for the compatibility requirements of reels of multiple specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a three-dimensional diagram of a wire feeding device for winding a transformer coil; Figure 2 It is a schematic diagram of the internal installation of a wire feeding device used for winding transformer coils; Figure 3 for Figure 2 A top view of Figure 4 for Figure 2 A front view of Figure 5 is a cross-sectional view along line A-A in Figure 4 ; Figure 6 is Figure 5 a partially enlarged view of Figure 7 is Figure 2 a partially enlarged view of position B in Figure 8 is Figure 3 a partially enlarged view of position C in Figure 9 is Figure 8 a longitudinal cross-sectional view of Figure 10 is Figure 8 a transverse cross-sectional view of

[0020] Explanation of reference numerals: 101 - mounting box, 102 - box door, 103 - conveying box, 104 - controller, 105 - wire reel, 106 - enameled wire, 107 - first camera, 108 - second camera; 200 - sliding mechanism, 201 - slide rail, 202 - first motor, 203 - screw, 204 - clamping block, 205 - mounting square shaft, 206 - second motor; 300 - rotating mechanism, 301 - first conical disk, 302 - second square shaft, 303 - second conical disk, 304 - first transmission belt, 305 - ring, 306 - cylinder, 307 - cylindrical groove, 308 - hydraulic cylinder, 309 - through hole, 310 - oil chamber, 311 - transmission pipe, 312 - gear pump; 400 - transmission part, 401 - first pulley, 402 - second transmission belt, 403 - second pulley, 404 - first mounting shaft, 405 - first gear, 406 - first driving wheel, 407 - second gear, 408 - second mounting shaft, 409 - second driving wheel, 410 - driving ring; 500 - guiding part, 501 - mounting cylinder, 502 - guide wheel. Detailed implementation mode

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention.

[0022] The orientation terms used in the following description are all the directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] An embodiment of the present invention provides a wire feeding device for winding a transformer coil. Refer to Figure 1 , Figure 2 , Figure 3 , which includes an installation box 101. An openable box door 102 is installed on the top of the installation box 101, which is convenient for taking, placing and installing the wire reel 105. The wire reel 105 is installed inside the installation box 101. An enameled wire 106 is tightly wound outside the wire reel 105. The enameled wire 106 is tightly arranged in layers on the outer surface of the wire reel 105. Under the guiding action of the guiding part 500 and the traction action of the transmission part 400, the enameled wire 106 is gradually unwound from the outer surface of the wire reel 105. The transmission part 400 and the guiding part 500 are installed inside the conveying box 103. One end of the conveying box 103 is fixedly connected and communicated with the side surface of the installation box 101.

[0024] The enameled wire 106 is inclined in the stage between the guiding part 500 and the wire reel 105. And a first camera 107 is arranged directly below the enameled wire 106 in this stage, which is used to monitor the angle α between the enameled wire 106 and the vertical plane where the axis of the guiding part 500 is located in real time. A second camera 108 is arranged on the side of the enameled wire 106 in this stage, which is used to monitor the angle β between the enameled wire 106 and the horizontal plane where the axis of the guiding part 500 is located in real time. Both the enameled wire 106 and the first camera 107 are fixedly installed inside the installation box 101.

[0025] A sliding mechanism 200 and a rotating mechanism 300 are also installed inside the installation box 101. The sliding mechanism 200 drives the wire reel 105 to rotate through the rotating mechanism 300, and the sliding mechanism 200 synchronously drives the transmission part 400 to convey the enameled wire 106, ensuring that the pulling of the enameled wire 106 by the transmission part 400 and the unwinding of the enameled wire 106 from the wire reel 105 are carried out synchronously. On the one hand, it avoids damaging the enameled wire 106 due to excessive pulling force, and on the other hand, it avoids shutdown caused by phenomena such as knotting and winding caused by excessive unwinding of the enameled wire 106.

[0026] The sliding mechanism 200 can also drive the wire reel 105 to reciprocate axially, so that the angle α is always within its preset range, avoiding damaging the enameled wire 106 and ensuring the smooth progress of wire feeding.

[0027] The rotating mechanism 300 can reverse calculate the remaining number of layers of the enameled wire based on the real-time data of the included angle β, and in combination with the radius of the wire wheel 105, dynamically adjust the rotation speed of the wire wheel 105, so that the unwinding speed of the enameled wire 106 matches the pulling speed of the transmission part 400, and keep the enameled wire 106 between the wire wheel 105 and the transmission part 400 in a straightened state, which will neither cause pulling damage to the enameled wire 106 nor cause knotting and winding of the enameled wire 106.

[0028] The first camera 107, the second camera 108, the sliding mechanism 200 and the rotating mechanism 300 are respectively signal-connected to the controller 104. The controller 104 is fixedly installed on the outer surface of the installation box 101. The controller 104 can obtain the included angle α and the included angle β measured by the first camera 107 and the second camera 108 in real time, and adjust the sliding stroke of the wire wheel 105 along its axis and the rotation speed of the wire wheel 105 in real time, so as to ensure that the pulling of the enameled wire 106 by the transmission part 400 and the unwinding of the enameled wire 106 from the wire wheel 105 are synchronized.

[0029] As one feasible embodiment, refer to Figure 2 、 Figure 3 The sliding mechanism 200 includes a slide rail 201. The slide rail 201 is fixedly installed inside the installation box 101. One end of the slide rail 201 is fixedly installed with a first motor 202. The first motor 202 is signal-connected to the controller 104. The output end of the first motor 202 is coaxially fixed with a screw rod 203. The screw rod 203 is rotatably installed at both ends of the slide rail 201. A clamping block 204 is slidably arranged inside the slide rail 201. The clamping block 204 is threadedly connected to the screw rod 203. The clamping block 204 can be clamped with the end of the wire wheel 105, thereby limiting the position of the wire wheel 105 along the axis.

[0030] The wire wheel 105 is slidably arranged on the outer surface of the installation square shaft 205. The installation square shaft 205 is rotatably installed inside the installation box 101. The cross-sectional shape of the installation square shaft 205 is square. The wire wheel 105 is coaxially provided with a square hole matching the cross-sectional shape of the installation square shaft 205, so that the wire wheel 105 can slide relative to the installation square shaft 205 along its axis, and the rotation of the installation square shaft 205 and the wire wheel 105 always remains synchronized.

[0031] The sliding mechanism 200 further includes a second motor 206 installed inside the installation box 101. The output end of the second motor 206 is drivingly connected to the installation square shaft 205 through the rotating mechanism 300, thereby driving the rotation of the installation square shaft 205.

[0032] In this embodiment, as the enameled wire 106 is unwound from the wire reel 105, the angle α between the enameled wire 106 and the vertical plane where the axis of the guiding portion 500 is located changes. The first camera 107 measures the angle α in real time and transmits the data to the controller 104. The controller 104 drives the screw 203 to rotate forward or backward through the first motor 202, and drives the clamping block 204 to slide along the length direction of the slide rail 201 through the threaded connection relationship between the screw 203 and the clamping block 204. During the sliding process of the clamping block 204, the wire reel 105 is driven to move along its axis, ensuring that the angle α is maintained within a preset range, thereby maintaining the conveying state of the enameled wire 106.

[0033] As one feasible embodiment, refer to Figure 4 , Figure 5 , Figure 6 , the rotating mechanism 300 includes a first conical disk 301. One side of the conical surface of the first conical disk 301 is coaxially fixed to the first end of the second square shaft 302. The second square shaft 302 is slidably disposed inside a through hole coaxially formed in the second conical disk 303. The conical surface of the first conical disk 301 and the conical surface of the second conical disk 303 are oppositely arranged. One end of the second conical disk 303 away from the first conical disk 301 is coaxially fixed to the ring 305. The ring 305 is rotatably clamped at the first end of the cylinder 306. The second end of the cylinder 306 is hermetically slidably disposed inside the cylindrical groove 307. The cylindrical groove 307 is formed at the first end of the hydraulic cylinder 308. An oil chamber 310 is provided at the second end of the hydraulic cylinder 308. The cylindrical groove 307 and the oil chamber 310 are communicated through a plurality of through holes 309.

[0034] The structure composed of the first conical disk 301, the second square shaft 302, the second conical disk 303, the first transmission belt 304, the ring 305, the cylinder 306, the cylindrical groove 307, the hydraulic cylinder 308, the through hole 309 and the oil chamber 310 is symmetrically distributed in two groups. One of the first conical disks 301 in the two groups is coaxially fixed to the output end of the second motor 206, and the other first conical disk 301 is coaxially fixed to the mounting square shaft 205.

[0035] In addition, the oil chambers 310 in the two groups are respectively fixedly connected to both ends of the transmission pipe 311. The two groups of cylindrical grooves 307, through holes 309, oil chambers 310 and the transmission pipe 311 form a closed space, and hydraulic oil is filled in this closed space. A gear pump 312 is fixedly installed on the transmission pipe 311. The gear pump 312 is signal-connected to the controller 104 and is used to drive the reciprocating flow of the hydraulic oil inside the transmission pipe 311.

[0036] A first drive belt 304 is wound in the gap between the first conical disk 301 and the second conical disk 303. Two sets of the first conical disks 301 and the second conical disks 303 are used to tension the first drive belt 304, so as to realize the synchronous rotation of the two sets of the first conical disks 301 and the second conical disks 303.

[0037] With the above structure of this embodiment, through the cooperation of two sets of the first conical disks 301, the second conical disks 303 and the first drive belt 304, power transmission is realized, so that the output end of the second motor 206 indirectly drives the rotation of the mounting square shaft 205 and the wire wheel 105.

[0038] Meanwhile, according to the change of the angle β, the controller 104 can also adjust the rotation speed of the wire wheel 105 by driving the rotation direction and the rotation amount of the gear pump 312. When the enameled wire 106 is gradually unwound from the outer surface of the wire wheel 105, the number of layers of the enameled wire 106 wound on the outer surface of the wire wheel 105 gradually decreases, that is, for each rotation of the wire wheel 105, the length of the unwound enameled wire 106 gradually shortens. Therefore, in order to ensure that the pulling conveying speed and the unwinding conveying speed of the enameled wire 106 are synchronized, at this time, it is necessary to adjust the rotation speed of the wire wheel 105 to make its rotation speed faster to meet the conveying requirements of the enameled wire 106.

[0039] Since as the enameled wire 106 is gradually unwound from the outer surface of the wire wheel 105, the number of layers of the enameled wire 106 wound on the outer surface of the wire wheel 105 gradually decreases, and at this time, the included angle β detected by the second camera 108 changes synchronously. Therefore, by changing the included angle β, adjusting the rotation speed of the wire wheel 105 in real time can meet the conveying requirements of the enameled wire 106.

[0040] When the second camera 108 detects that the included angle β changes, a signal is transmitted to the controller 104, and the controller 104 controls the gear pump 312 to rotate, so that the hydraulic oil on both sides of the gear pump 312 flows through the gear pump 312. The pressure difference generated by the flow of the hydraulic oil is transmitted to the inside of the cylindrical groove 307 through the oil chamber 310 and the through hole 309, thereby driving the cylinder 306 sealed and slidably disposed inside the cylindrical groove 307 to move along the axis of the cylindrical groove 307, resulting in a change in the distance between the two sets of the first conical disks 301 and the second conical disks 303.

[0041] When it is necessary to increase the rotational speed of the wire reel 105, the gap between a set of first tapered disks 301 and second tapered disks 303 on the side close to the wire reel 105 becomes larger. Conversely, at this time, the gap between the other set of first tapered disks 301 and second tapered disks 303 on the side far from the wire reel 105 becomes smaller. The gaps between the two sets of first tapered disks 301 and second tapered disks 303 change simultaneously, causing the trajectory shape of the first transmission belt 304 that realizes their transmission to change. On the side where the gap becomes larger, the trajectory of the first transmission belt 304 approaches the axis of the first tapered disk 301. On the side where the gap becomes smaller, the trajectory of the first transmission belt 304 moves away from the axis of the first tapered disk 301, realizing the change in the transmission ratio between the two first tapered disks 301 and second tapered disks 303, thereby completing the adjustment of the rotational speed of the wire reel 105.

[0042] As one feasible embodiment, refer to Figure 2 、 Figure 5 、 Figure 7 The transmission part 400 includes a first pulley 401. The first pulley 401 is coaxially fixed to the output end of the second motor 206. The first pulley 401 is drivingly connected to a second pulley 403 through a second transmission belt 402. The second pulley 403 is coaxially fixed to the first end of a first mounting shaft 404. The first mounting shaft 404 is rotatably installed inside the conveying box 103.

[0043] The middle part of the first mounting shaft 404 is coaxially fixed to a first gear 405. The second end of the first mounting shaft 404 is coaxially fixed to a first driving wheel 406. The first mounting shaft 404 meshes with a second gear 407. The second gear 407 is coaxially fixed to the first end of a second mounting shaft 408. The second mounting shaft 408 is rotatably installed inside the conveying box 103. The second end of the second mounting shaft 408 is coaxially fixed to a second driving wheel 409.

[0044] Drive rings 410 are fixedly installed on the outer circumferential surfaces of the first driving wheel 406 and the second driving wheel 409. An enameled wire 106 is arranged between the two drive rings 410. The drive rings 410 are made of rubber or latex, which is used to increase the friction force, so as to successfully complete the pulling of the enameled wire 106.

[0045] Among them, the first gear 405 and the second gear 407 are exactly the same gears, and the structures of the first driving wheel 406 and the second driving wheel 409 are exactly the same. With this structure, when the first driving wheel 406 and the second driving wheel 409 cooperate to complete the pulling of the enameled wire 106, their rotational speeds are the same and their rotational directions are opposite.

[0046] Among them, the gap between two driving rings 410 respectively and fixedly installed on the outer circumferential surfaces of the first driving wheel 406 and the second driving wheel 409 is smaller than the diameter of the enameled wire 106, increasing the contact area between the two driving rings 410 and the enameled wire 106, and providing greater frictional force for the conveyance of the enameled wire 106.

[0047] In the above structure of this embodiment, the second motor 206 drives the synchronous rotation of the second pulley 403 through the first pulley 401 installed on its output end, and further drives the rotation of the first gear 405 and the first driving wheel 406 through the second pulley 403. Based on the meshing relationship between the first gear 405 and the second gear 407, the second driving wheel 409 is further driven to rotate in the opposite direction relative to the first driving wheel 406 through the second gear 407. Through the cooperation of the first driving wheel 406 and the second driving wheel 409, the pulling of the enameled wire 106 is jointly completed.

[0048] Based on the above structure, the power source of the transmission part 400 and the power source of the rotating mechanism 300 are both the second motor 206. Therefore, it is ensured that the pulling of the enameled wire 106 by the transmission part 400 and the unwinding of the enameled wire 106 on the wire wheel 105 are synchronized. Further, through the adjustment of the position of the wire wheel 105 by the sliding mechanism 200 and the adjustment of the rotation speed of the wire wheel 105 by the rotating mechanism 300, the stability and synchronization of the conveyance of the enameled wire 106 are maintained, and the damage to the enameled wire 106 caused by the generation of a travel difference before and after is avoided.

[0049] As one feasible embodiment, refer to Figure 3 、 Figure 8 、 Figure 9 、 Figure 10 , the guiding part 500 includes an installation cylinder 501 and a guiding wheel 502. The installation cylinder 501 is fixedly installed inside the conveying box 103. A plurality of through holes are evenly formed in the side wall of the installation cylinder 501, and the guiding wheel 502 is rotatably installed inside the through holes. The side edges of the plurality of guiding wheels 502 are provided with chamfers, and the outer surfaces of the plurality of guiding wheels 502 are lapped with the outer surface of the enameled wire 106 inside the installation cylinder 501.

[0050] When the guiding part 500 completes the guiding of the enameled wire 106, the above structure makes the friction form between the guiding part 500 and the outer surface of the enameled wire 106 be rolling friction through the rolling of the guiding wheel 502, avoiding damage to the outer skin of the enameled wire 106, and further ensuring the performance of the transformer coil.

[0051] In addition, the installation cylinder 501 is horizontally arranged, and the axis of the installation cylinder 501 is located on the symmetry plane of the first driving wheel 406 and the second driving wheel 409. This structure ensures that the pulling section of the enameled wire 106 by the transmission part 400 remains horizontal, and the enameled wire 106 contacts the two driving rings 410 along the tangential direction, making the pulling force on the enameled wire 106 more uniform.

[0052] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, according to the above description, many modifications and variations can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and its modified use based on the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wire feeding device for winding a transformer coil, characterized in that, Comprising: An installation box (101) with a wire reel (105) installed inside, and an enameled wire (106) wound around the outer surface of the wire reel (105); A conveying box (103) fixed and communicated with the installation box (101), with a guiding part (500) and a transmission part (400) arranged inside. The guiding part (500) is used to guide the enameled wire (106) to unwind from the wire reel (105), and the transmission part (400) is used to traction the enameled wire (106); A sliding mechanism (200) for driving the wire reel (105) to slide along its axial direction; A rotating mechanism (300) for driving the wire reel (105) to rotate and adjusting the rotation speed of the wire reel (105); A first camera (107) and a second camera (108). The first camera (107) monitors the angle α between the enameled wire (106) and the vertical plane where the axis of the guiding part (500) is located, and the second camera (108) monitors the angle β between the enameled wire (106) and the horizontal plane where the axis of the guiding part (500) is located; A controller (104) is signal-connected to the first camera (107), the second camera (108), the sliding mechanism (200) and the rotating mechanism (300), and based on the angle α and the angle β, it adjusts the sliding stroke and rotation speed of the wire reel (105) in real time, so that the pulling speed of the enameled wire (106) by the transmission part (400) matches the unwinding speed of the enameled wire (106) from the wire reel (105).

2. The wire feeding device for transformer coil winding according to claim 1, characterized in that, The sliding mechanism (200) includes a slide rail (201), a first motor (202), a screw rod (203) and a clamping block (204). The slide rail (201) is fixed inside the installation box (101), the first motor (202) is coaxially connected with the screw rod (203), the clamping block (204) is slidably arranged in the slide rail (201), and the clamping block (204) is in threaded cooperation with the screw rod (203) and is clamped with the end of the wire reel (105) to drive the wire reel (105) to slide axially.

3. The wire feeding device for transformer coil winding according to claim 2, characterized in that The wire reel (105) is slidably arranged on a square installation shaft (205), and the cross-section of the installation shaft (205) is square and is connected to a second motor (206) through a rotating mechanism (300).

4. The wire feeding device for transformer coil winding according to claim 1, characterized in that, The rotating mechanism (300) includes two groups of symmetrically arranged first conical discs (301), second conical discs (303) and a hydraulic adjustment component. The structure formed by the two groups of first conical discs (301) and second conical discs (303) is driven through a first transmission belt (304). The hydraulic adjustment component controls the flow of hydraulic oil through a gear pump (312) to adjust the gap between the first conical disc (301) and the second conical disc (303), and further changes the transmission ratio to adjust the rotation speed of the wire reel (105).

5. The wire feeding device for transformer coil winding according to claim 4, characterized in that, The hydraulic adjustment assembly comprises two groups of symmetrically arranged hydraulic cylinders (308), a cylindrical groove (307), a cylinder (306) and a ring (305); the ring (305) is coaxially fixed with the second conical disk (303); the ring (305) and the cylinder (306) are rotatably engaged; the cylinder (306) is sealingly slidably arranged in the cylindrical groove (307); the two groups of cylindrical grooves (307) are sealed and connected via a gear pump (312); the flow of hydraulic oil drives the cylinder (306) to move axially, thereby linking the distance between the first conical disk (301) and the second conical disk (303) to change.

6. The wire feeding device for transformer coil winding according to claim 1, characterized in that, The transmission part (400) comprises a first driving wheel (406), a second driving wheel (409) and a driving ring (410); the gap of the driving ring (410) is smaller than the diameter of the enameled wire (106), and the driving ring (410) is driven by the second motor (206) through a belt drive to rotate in the opposite direction to clamp and pull the enameled wire (106).

7. The wire feeding device for transformer coil winding according to claim 6, characterized in that, The transmission part (400) further comprises a first gear (405) and a second gear (407), wherein the first gear (405) is coaxially fixed with the first driving wheel (406), the second gear (407) is coaxially fixed with the second driving wheel (409), and the first gear (405) and the second gear (407) are meshed to achieve reverse rotation.

8. The wire feeding device for transformer coil winding according to claim 1, characterized in that, The guide portion (500) comprises a mounting tube (501) and a plurality of guide wheels (502); the guide wheels (502) are rotatably mounted in a through hole on a side wall of the mounting tube (501); their side edges are arranged at a chamfered angle and are in rolling contact with the enameled wire (106).

9. The wire feeding device for transformer coil winding according to claim 8, characterized in that, The axis of the installation cylinder (501) is aligned with the symmetric surfaces of the first driving wheel (406) and the second driving wheel (409) in the transmission part (400), so that the pulling section of the enameled wire (106) remains horizontal.

Images