A kind of auxiliary wheel for annular silicon steel sheet winding

Abstract

The application discloses an auxiliary wheel for winding annular silicon steel sheets, and belongs to the technical field of annular core winding equipment. The auxiliary wheel comprises a winding shaft, a bearing cabinet, and a pressing wheel body rotatably arranged on an inner cabinet. The inner cabinet is slidably arranged in a cabinet cavity of the bearing cabinet and is supported by elastic return members, so that the pressing wheel body automatically floats and gives way with the increase of the thickness of the annular silicon steel sheet. The elastic return members are adjusted by adjusting members to change the compression degree and to adjust the pressing force. The pressing wheel body is composed of two parts which are arranged in opposite directions and can move relatively, so as to adjust the effective pressing length. The side of the bearing cabinet close to the winding shaft is formed with a limiting surface to limit the outer side of the silicon steel sheet. A spot welding head with adjustable position is further arranged. The application can improve the stability and forming quality of the annular silicon steel sheet winding.

Description

Technical Field

[0001] This invention belongs to the technical field of toroidal iron core winding equipment, and particularly relates to an auxiliary wheel for winding toroidal silicon steel sheets. Background Technology

[0002] Annular silicon steel sheets are formed by continuously winding strip silicon steel sheets. During the winding process, the silicon steel sheets need to be adhered to the winding shaft one turn at a time, ultimately forming an annular iron core structure with a certain thickness and width. Because the silicon steel sheets themselves are relatively thin and usually have an insulating coating on their surface, it is necessary to ensure that the silicon steel sheets are properly compressed to make the layers adhere tightly, while avoiding excessive compression force that could cause deformation, edge warping, or coating damage to the silicon steel sheets.

[0003] In existing annular silicon steel sheet winding equipment, pressure rollers or guide rollers are usually set near the winding shaft to assist in pressing the silicon steel sheet during winding.

[0004] However, existing technologies still have the following shortcomings: First, the position or clamping force of common pressure rollers is mostly fixed. When the winding thickness of the annular silicon steel sheet gradually increases, the pressure roller cannot float and adjust well with the change in winding thickness, which easily leads to insufficient clamping in the early stage and excessive clamping in the later stage. If the clamping force is reduced to avoid damaging the silicon steel sheet, it may result in loose winding and interlayer looseness, affecting the forming quality of the subsequent iron core. Although some existing technologies can move the pressure rollers as the iron core diameter increases, their clamping force cannot be actively adjusted according to actual needs, making it difficult to adapt to silicon steel sheets of different thicknesses or winding requirements. Second, the width of annular silicon steel sheets of different specifications is not exactly the same, while the clamping range of existing auxiliary clamping structures is usually relatively fixed. When the width of the silicon steel sheet changes, the pressure roller is difficult to match the width of the silicon steel sheet, which easily leads to only local clamping and lack of edge support, resulting in warping of the silicon steel sheet edges or uneven end faces. Although existing technologies can adapt to different widths by adjusting the axial position of the pressure roller, the clamping length of the pressure roller itself remains unchanged, making it difficult to achieve uniform clamping for silicon steel sheets with significant width differences. Third, if the outward-facing side of the silicon steel sheet lacks effective restraint during winding, it is prone to outward slippage and swaying, further affecting the stability of the winding. Fourth, after the annular silicon steel sheet is wound, its tail end needs to be spot-welded for fixation. Existing equipment lacks a device that can accurately position the spot weld to the center of the tail end of the silicon steel sheet, resulting in inaccurate spot welding positions and unstable fixing effects. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an auxiliary wheel for winding annular silicon steel sheets, which features adaptive floating clamping with varying thickness, adjustable clamping force, adaptability to different silicon steel sheet widths, and an outer limiting function.

[0006] An auxiliary wheel for winding annular silicon steel sheets includes: A winding shaft is used to wind silicon steel sheets to form annular silicon steel sheets; The carrier cabinet is located on one side of the winding shaft. The carrier cabinet has a cabinet cavity, and an inner cabinet is movably installed inside the cabinet cavity. The inner cabinet can slide within the cabinet cavity in a direction close to or away from the winding shaft. The clamping wheel is rotatably mounted on the inner cabinet and is used to clamp the annular silicon steel sheet wound on the winding shaft from the outside. An elastic reset element, located between the inner cabinet and the carrier cabinet, is used to provide an elastic force to the inner cabinet in the direction of the winding axis, so that the clamping wheel body floats away from the winding axis as the thickness of the annular silicon steel sheet increases.

[0007] It also includes a clamping force adjustment mechanism, which includes an adjustment component movably disposed in the carrier cabinet, an elastic reset component disposed between the adjustment component and the inner cabinet, and a drive mechanism connected to the adjustment component for driving its movement to change the compression degree of the elastic reset component.

[0008] The effective clamping length of the clamping wheel is adjustable. The clamping wheel includes a first wheel and a second wheel arranged axially opposite to each other. The axial distance between the second wheel and the first wheel is adjustable, and the second wheel and the first wheel are circumferentially aligned through a sliding fit structure.

[0009] The second wheel is connected to a telescopic drive mechanism for driving its axial movement relative to the first wheel.

[0010] The bearing cabinet forms a limiting surface on the side near the winding shaft, which is used to limit and block the annular silicon steel sheet away from the winding shaft when the clamping wheel moves with the inner cabinet.

[0011] The sliding fit structure includes a connector disposed at the end of the first wheel body and a groove formed at the end of the second wheel body. The connector is slidably disposed in the groove, and the outer surface of the connector smoothly transitions with the outer peripheral surfaces of the first wheel body and the second wheel body.

[0012] The clamping wheel body is provided in two parts, and the two clamping wheel bodies are arranged at an axial interval along the winding shaft; the second wheel body of the two clamping wheel bodies is rotatably mounted on the same follower plate, and the follower plate is connected to a telescopic compensation structure, which is used to perform follower compensation when the second wheel body moves axially.

[0013] It also includes a spot welding head and its position adjustment mechanism. The position adjustment mechanism is set on the follower plate and is used to adjust the spot welding head to the middle position of the tail end of the annular silicon steel sheet after the annular silicon steel sheet is wound.

[0014] The position adjustment mechanism includes an adjustment rod rotatably mounted on a follower plate and a mounting block threadedly engaged with the adjustment rod. A spot welding head is mounted on the mounting block, and the adjustment rod rotates to drive the mounting block to move along its axial direction.

[0015] The cabinet cavity is equipped with a guide structure to guide the sliding of the inner cabinet; a displacement detection device is installed inside the cabinet cavity to monitor the movement distance of the inner cabinet and obtain the real-time winding thickness of the annular silicon steel sheet. Through the above technical solution, this invention has at least the following beneficial effects: The auxiliary wheel of this invention is supported by a spring and automatically moves backward as the winding thickness increases, which overcomes the problems of insufficient early clamping and excessive later clamping of existing rigid pressure wheels, and avoids deformation of silicon steel sheets or damage to the coating.

[0016] The clamping force of this invention can be actively adjusted: by adjusting the motor drive screw to change the spring preload, the clamping force can be precisely controlled, which is suitable for silicon steel sheets of different thicknesses and winding requirements. This is superior to the existing technology where the clamping force is fixed or relies solely on a single spring for passive force application.

[0017] This invention can achieve external limiting to prevent deviation: the front face of the bearing cabinet forms a limiting surface, which limits and blocks the outside of the silicon steel sheet while floating and pressing, overcoming the defects of existing rollers that only press radially and are prone to axial deviation.

[0018] The clamping length of this invention is adjustable to adapt to different widths: the auxiliary wheel is composed of upper and lower wheel bodies, and the upper wheel body can be raised and lowered relative to each other to change the overall clamping length, thereby achieving uniform clamping of the silicon steel sheet across the entire width, which is superior to the existing technology that relies solely on axial position adjustment or boss limiting.

[0019] The spot welding positioning of this invention is accurate: the position of the spot welding head is adjustable, ensuring that each spot welding is located in the middle of the tail end of the silicon steel sheet, resulting in a more stable fixing effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the auxiliary wheel used for winding annular silicon steel sheets according to the present invention; Figure 2 This is a schematic diagram showing the connection relationship between the winding shaft, the synchronization sleeve, and the moving sleeve in this invention; Figure 3 This is a schematic diagram of the overall structure of the support cabinet and auxiliary wheels in this invention; Figure 4 This is a schematic diagram of the spot welding positioning mechanism in this invention; Figure 5 This is a cross-sectional view of the internal structure of the support cabinet and the auxiliary wheel length adjustment mechanism in this invention; In the picture: 1. Winding shaft; 2. Groove; 3. Spline; 4. Synchronizing sleeve; 5. Bearing 1; 6. Moving sleeve; 7. Bearing cabinet; 8. Inner cabinet; 9. Spring; 10. Adjusting plate; 11. Nut; 12. Lead screw; 13. Adjusting motor; 14. Distance sensor; 15. Support shaft; 16. Lower wheel body; 17. Adjusting shaft; 18. Telescopic motor; 19. Threaded groove; 20. Upper wheel body; 21. Limiting shaft; 22. Connecting bridge plate; 23. Plate groove; 24. Top plate; 25. Arc plate; 26. Telescopic cabinet; 27. Center groove; 28. Threaded rod; 29. ​​Nut; 30. Spot welding head. Detailed Implementation

[0021] To better explain and facilitate understanding of the present invention, the technical solution and effects of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-5 As shown, the auxiliary wheel for winding annular silicon steel sheets provided by the present invention includes a winding shaft 1 as the main body of the device. Grooves 2 are evenly distributed on the winding shaft 1, extending axially along the winding shaft 1. Further, a spline 3 is slidably provided within the grooves 2, and the spline 3 is fixedly installed on the inner wall of a synchronizing sleeve 4. The synchronizing sleeve 4 is rotatably connected to a movable sleeve 6 via a bearing 5, meaning the synchronizing sleeve 4 can rotate freely relative to the movable sleeve 6, but the synchronizing sleeve 4 and the movable sleeve 6 are axially fixed. The movable sleeve 6 is used to connect a drive device to achieve axial movement on the winding shaft 1. A support cabinet 7 is provided on one side of the winding shaft 1, serving as the basic support component.

[0023] During operation, the winding shaft 1 is driven by a drive motor to rotate and wind the silicon steel sheet. The synchronizing sleeve 4 forms a circumferential limiting fit with the winding shaft 1 via splines 3, thus allowing the synchronizing sleeve 4 to rotate synchronously with the winding shaft 1. Since the synchronizing sleeve 4 is rotatably connected to the movable sleeve 6 via bearing 5, the movable sleeve 6 itself does not rotate with the winding shaft 1, but it can move axially along the winding shaft 1 under the drive of the drive cylinder, and drives the synchronizing sleeve 4 to move axially synchronously via bearing 5. After the annular silicon steel sheet is wound, the cylinder drives the movable sleeve 6 to move axially along the winding shaft 1. The movable sleeve 6 drives the synchronizing sleeve 4 to move via bearing 5, and the synchronizing sleeve 4 drives the splines 3 to slide within the grooves 2, thereby pushing the wound annular silicon steel sheet off the winding shaft 1, completing the unloading process.

[0024] like Figure 1 and Figure 5As shown, the support cabinet 7 is located on one side of the winding shaft 1. The support cabinet 7 has an internal cavity, within which an inner cabinet 8 is movably mounted. The inner cabinet 8 can slide within the cavity in a direction close to or away from the winding shaft 1. To ensure the smooth movement of the inner cabinet 8, a guide structure is provided within the cavity to guide its sliding. This guide structure can be a conventional linear guide, such as a guide rail assembly, a guide groove and protrusion combination structure, or a guide block and slide groove combination structure. The inner cabinet 8 is slidably mounted on the aforementioned guide structure, preventing it from easily shifting or jamming during sliding. Furthermore, two auxiliary wheels are provided on the top of the support cabinet 7 near the winding shaft 1. These two auxiliary wheels are spaced apart along the axial direction of the winding shaft 1 and are used to press the annular silicon steel sheet wound on the winding shaft 1 from the outside. Each auxiliary wheel is fixedly mounted with a support shaft 15 at its bottom. The support shaft 15 is rotatably mounted in the inner cabinet 8 through a second bearing, so that the auxiliary wheel can move as a whole with the inner cabinet 8 in the cabinet cavity, and can also rotate freely around its own axis. Thus, while pressing the annular silicon steel sheet, the outer circumference of the auxiliary wheel can roll with the movement of the silicon steel sheet, without hindering the winding movement of the silicon steel sheet, and avoiding damage to the surface coating of the silicon steel sheet by sliding friction.

[0025] The inner cabinet 8, located away from the winding shaft 1, is supported by a spring 9. Specifically, the spring 9 is positioned between the adjusting plate 10 and the inner cabinet 8, with one end abutting against the rear end of the inner cabinet 8 and the other end abutting against the adjusting plate 10. The adjusting plate 10 is slidably installed in the supporting cabinet 7 and can slide along the front-to-back direction of the cabinet cavity. As the thickness of the annular silicon steel sheet on the winding shaft 1 gradually increases, the outer circumference of the annular silicon steel sheet exerts an outward thrust on the auxiliary wheel, pushing the auxiliary wheel and the inner cabinet 8 to move away from the winding shaft 1, further compressing the spring 9. When the thickness of the annular silicon steel sheet no longer increases or winding stops, the elastic restoring force of the spring 9 pushes the inner cabinet 8 and the auxiliary wheel to move closer to the winding shaft 1, ensuring that the auxiliary wheel maintains its pressing effect on the annular silicon steel sheet. With the above structure, the auxiliary wheel can automatically move backward as the thickness of the annular silicon steel sheet increases, avoiding deformation of the silicon steel sheet caused by rigid pressing of the auxiliary wheel, and also avoiding loose winding of the silicon steel sheet due to insufficient pressing. This achieves floating pressing of the annular silicon steel sheet, making the winding process more stable.

[0026] Based on the floating clamping structure, this device is also equipped with a clamping force adjustment mechanism to achieve on-demand controllable adjustment of the clamping force. For example... Figure 5As shown, a nut 11 is fixedly mounted on the adjusting plate 10, and the inner wall of the nut 11 is provided with an internal thread. The outer wall of the lead screw 12 is provided with an external thread that matches the internal thread of the nut 11. The lead screw 12 passes through the nut 11 and is threadedly connected to the nut 11. The lead screw 12 is driven to rotate by an adjusting motor 13, which is fixedly mounted on the support cabinet 7, and its output shaft is connected to one end of the lead screw 12. Controlling the operation of the adjusting motor 13 causes the lead screw 12 to rotate, driving the nut 11 to move axially along the lead screw 12. Since the nut 11 is fixedly mounted on the adjusting plate 10, the adjusting plate 10 moves synchronously with the nut 11. After the position of the adjusting plate 10 changes, the degree of compression of the spring 9 located between the adjusting plate 10 and the inner cabinet 8 changes accordingly. Specifically, when it is necessary to increase the clamping force of the auxiliary wheel on the annular silicon steel sheet, the control motor 13 rotates forward, the lead screw 12 drives the lead screw nut 11 and the adjusting plate 10 to move closer to the inner cabinet 8, the spring 9 is further compressed, the preload of the spring 9 on the inner cabinet 8 increases, and the clamping force of the auxiliary wheel on the annular silicon steel sheet increases accordingly; conversely, when it is necessary to decrease the clamping force, the control motor 13 rotates in the reverse direction, the adjusting plate 10 moves away from the inner cabinet 8, the compression of the spring 9 decreases, the preload decreases, and the clamping force of the auxiliary wheel decreases accordingly. Through this method, the operator can flexibly adjust the clamping force of the auxiliary wheel according to silicon steel sheets of different thicknesses or winding requirements, enabling the equipment to adapt to the winding needs of silicon steel sheets of various specifications.

[0027] In a more preferred embodiment, a distance sensor 14 is installed on the inner wall of the cabinet cavity near the winding shaft 1. The distance sensor 14 is used to monitor the movement distance of the inner cabinet 8 relative to the front inner wall of the cabinet cavity in real time. Since the movement distance of the inner cabinet 8 directly corresponds to the increase in the winding thickness of the annular silicon steel sheet, each time the inner cabinet 8 moves backward a certain distance, it represents a corresponding increase in the winding thickness of the annular silicon steel sheet. The real-time winding thickness of the annular silicon steel sheet can be accurately calculated through the monitoring data of the distance sensor 14. The distance sensor 14 can transmit the monitoring data to the display terminal of the control system, allowing operators to monitor the winding progress in real time, thereby stopping the machine in time when the winding thickness reaches the predetermined value to avoid over-winding or under-winding.

[0028] As the auxiliary wheel floats and moves with the inner cabinet 8, the carrier cabinet 7 remains positioned on the side of the annular silicon steel sheet away from the winding shaft 1. A limiting surface is formed on the side of the carrier cabinet 7 closest to the winding shaft 1, extending axially along the winding shaft 1, with a width not less than the width of the annular silicon steel sheet. During winding, the annular silicon steel sheet is wound layer by layer under the drive of the winding shaft 1, its inner side adhering to the winding shaft 1 or the already wound silicon steel sheet layer, while its outer side is pressed by the auxiliary wheel. Simultaneously, the outer end of the annular silicon steel sheet is limited and blocked by the limiting surface at the front end of the carrier cabinet 7. When the annular silicon steel sheet tends to move outward, i.e., away from the winding shaft 1, or sway, the limiting surface of the carrier cabinet 7 blocks it, effectively constraining the outward displacement of the annular silicon steel sheet. This makes it less likely for the annular silicon steel sheet to move outward, sway, or have its edges warp during winding, resulting in a neater end face and better winding stability.

[0029] Furthermore, to accommodate annular silicon steel sheets of different widths, the length of the auxiliary wheel itself is also adjustable. Specifically, as shown... Figure 5 As shown, the auxiliary wheel consists of a first wheel body and a second wheel body, wherein the first wheel body is the lower wheel body 16 and the second wheel body is the upper wheel body 20. The lower wheel body 16 is fixedly connected to the support shaft 15, which is rotatably mounted in the inner cabinet 8 via a second bearing. The upper wheel body 20 is located above the lower wheel body 16 and is coaxially arranged with the lower wheel body 16. Multiple connecting bridge plates 22 are evenly installed on the top edge of the lower wheel body 16, and are evenly distributed along the circumference of the lower wheel body 16. The lower end of the connecting bridge plate 22 is fixed to the top edge of the lower wheel body 16, and the upper end is slidably disposed in a plate groove 23. The plate groove 23 is opened on the outer wall of the bottom end of the upper wheel body 20 and extends along the axial direction of the upper wheel body 20. The connecting bridge plate 22 can slide along the axial direction of the upper wheel body 20 within the plate groove 23. The distance between the upper wheel body 20 and the lower wheel body 16 can be adjusted by the sliding engagement of the connecting bridge plate 22 within the plate groove 23. Simultaneously, due to the connecting effect of the connecting bridge plate 22, the upper wheel body 20 and the lower wheel body 16 remain a single integrated structure after the distance adjustment. Preferably, the outer surface of the connecting bridge plate 22 is substantially flush with the outer circumferential surface of the lower wheel body 16 and the outer circumferential surface of the upper wheel body 20, ensuring that the outer circumferential surface of the auxiliary wheel remains flat and continuous after length adjustment. This prevents damage to the annular silicon steel sheet due to obvious steps or gaps when pressing it.

[0030] A threaded groove 19 is formed at the center of the bottom of the upper wheel body 20. The threaded groove 19 extends axially along the upper wheel body 20, and its inner wall is provided with internal threads. An adjusting shaft 17 is connected to the threaded groove 19, and the outer wall of the adjusting shaft 17 is provided with external threads that are adapted to the internal threads of the threaded groove 19. The bottom end of the adjusting shaft 17 passes through the lower wheel body 16 and the support shaft 15 and is fixedly connected to the output shaft of the telescopic motor 18, which is fixedly mounted on the inner cabinet 8. At the same time, a limiting shaft 21 is also fixedly installed at the bottom of the upper wheel body 20. The limiting shaft 21 extends axially and is movably inserted into the lower wheel body 16. The limiting shaft 21 and the lower wheel body 16 are in a sliding fit. The limiting shaft 21 can slide axially relative to the lower wheel body 16, but cannot rotate relative to the lower wheel body 16. In use, the telescopic motor 18 drives the adjusting shaft 17 to rotate. Since the upper wheel 20 is circumferentially limited by the limiting shaft 21 (which is inserted into the lower wheel 16), the upper wheel 20 cannot rotate relative to the lower wheel 16. Therefore, when the adjusting shaft 17 rotates, the threaded engagement between its external thread and the internal thread of the threaded groove 19 converts the rotational motion into axial linear motion of the upper wheel 20, causing it to rise and fall relative to the lower wheel 16. When the auxiliary wheel length needs to be increased to accommodate wider silicon steel sheets, the telescopic motor 18 drives the adjusting shaft 17 to rotate forward, causing the upper wheel 20 to move upward away from the lower wheel 16, increasing the overall length of the auxiliary wheel. When the auxiliary wheel length needs to be shortened, the telescopic motor 18 rotates in the opposite direction, causing the upper wheel 20 to move downward towards the lower wheel 16, decreasing the overall length of the auxiliary wheel. Therefore, the effective clamping length of the auxiliary wheel can be flexibly adjusted according to the actual width of the silicon steel sheet to be wound, so that the auxiliary wheel can apply uniform clamping force to the entire width range of the silicon steel sheet, effectively avoiding problems such as local clamping, lack of edge support or edge warping caused by mismatch in clamping width.

[0031] During the adjustment of the auxiliary wheel length, to prevent the free rotation of the auxiliary wheel from interfering with the adjustment action, an electromagnetic brake is fixedly installed at the bottom of the lower wheel body 16. The extendable end of the electromagnetic brake can extend and contact the support cabinet 7, thereby locking the rotation of the auxiliary wheel when the length of the auxiliary wheel needs to be adjusted. After the adjustment is completed, the electromagnetic brake resets, releasing the lock on the rotation of the auxiliary wheel, and the auxiliary wheel returns to a free rotation state.

[0032] To ensure the stability of the lifting and lowering adjustment of the upper wheel body 20 and the coordinated linkage between various components, both upper wheel bodies 20 are rotatably mounted on the top plate 24 via axles. An arc-shaped plate 25 is fixedly connected to the side of the top plate 24. The arc-shaped plate 25 is movably and retractably disposed within the telescopic cabinet 26, which is slidably mounted on the support cabinet 7. When the upper wheel body 20 rises or falls, the top plate 24 rises and falls synchronously with it, and the arc-shaped plate 25 extends or retracts relative to the telescopic cabinet 26, thus adapting to changes in the height of the upper wheel body 20. When the auxiliary wheel floats and moves with the inner cabinet 8, the telescopic cabinet 26 slides synchronously on the support cabinet 7, ensuring a stable connection between the top plate 24, the arc-shaped plate 25, and the auxiliary wheel, preventing interference with the relative movement of the components.

[0033] To achieve spot welding and fixation of the annular silicon steel sheet at the tail end after winding, this device is also equipped with a spot welding head 30. To ensure that the spot welding head 30 can perform spot welding at the middle of the tail end of the annular silicon steel sheet each time, such as... Figure 4 As shown, a central groove 27 is formed approximately in the middle of the arc-shaped plate 25, extending along the direction of the arc-shaped plate 25. A threaded rod 28 is rotatably mounted within the central groove 27, with both ends of the threaded rod 28 rotatably mounted on the end walls of the central groove 27. A nut 29 is threadedly connected to the threaded rod 28, and the nut 29 slides against the inner wall of the central groove 27, allowing the nut 29 to move along the central groove 27 when the threaded rod 28 rotates but not to rotate with the threaded rod 28. A spot welding head 30 is mounted on the nut 29 and is a retractable welding head that can extend for spot welding or retract under the action of a control signal. After the annular silicon steel sheet is wound, the operator rotates the threaded rod 28 according to the width and winding thickness of the annular silicon steel sheet, causing the nut 29 to move along the central groove 27, aligning the spot welding head 30 with the middle position of the tail end of the annular silicon steel sheet, and then controls the spot welding head 30 to extend for spot welding. With the above structure, the position of the spot welding head 30 can be flexibly adjusted according to the different specifications of the annular silicon steel sheet, ensuring that each spot welding is accurately located in the middle of the tail end of the silicon steel sheet, thus improving the accuracy and stability of spot welding fixation.

[0034] In use, first, based on the width of the annular silicon steel sheet to be wound, start the telescopic motor 18 to drive the adjusting shaft 17 to rotate, causing the upper wheel 20 to rise and fall relative to the lower wheel 16, adjusting the overall length of the auxiliary wheels to match the width of the silicon steel sheet; then, based on the thickness of the silicon steel sheet or winding requirements, start the adjusting motor 13 to drive the lead screw 12 to rotate, causing the adjusting plate 10 to move, adjusting the preload of the spring 9 to a suitable clamping force value. After the preparation work is completed, fix the starting end of the silicon steel sheet on the winding shaft 1, start the drive motor of the winding shaft 1, and the winding shaft 1 rotates to begin winding the silicon steel sheet. Under the action of the spring 9, the two auxiliary wheels press the annular silicon steel sheet being wound from the outside. As winding proceeds, the winding thickness of the annular silicon steel sheet gradually increases, and its outer circumference exerts an outward force on the auxiliary wheels, pushing the auxiliary wheels together with the inner cabinet 8 to move away from the winding shaft 1. The spring 9 is further compressed, and the auxiliary wheels achieve automatic floating and repositioning. Meanwhile, the side of the carrier cabinet 7 closest to the winding shaft 1 forms a limiting block on the outer end of the annular silicon steel sheet, preventing it from shifting outwards and swaying. The distance sensor 14 monitors the movement distance of the inner cabinet 8 in real time and transmits the data to the control system. After the predetermined thickness is reached, the rotation of the winding shaft 1 is stopped. The operator rotates the threaded rod 28 and adjusts the spot welding head 30 to the middle position of the tail end of the annular silicon steel sheet, controlling the spot welding head 30 to extend and perform spot welding for fixation. After spot welding is completed, the carrier cabinet 7 is moved away from the winding shaft 1 by the XY axis moving mechanism, so that the auxiliary wheel and the carrier cabinet 7 can make way for the unloading space. Finally, the moving sleeve 6 is driven by the cylinder to move axially along the winding shaft 1. The moving sleeve 6 drives the synchronous sleeve 4 to move through the bearing 5. The synchronous sleeve 4 drives the spline 3 to slide in the groove 2, pushing the wound annular silicon steel sheet off the winding shaft 1 to complete the unloading.

[0035] Preferably, the carrier cabinet 7 can be connected to an XY-axis moving mechanism as needed. This XY-axis moving mechanism is a conventional cross slide module, including a moving component in the X-axis direction and a moving component in the Y-axis direction perpendicular to it. The carrier cabinet 7 is mounted on the output end of the XY-axis moving mechanism. During the winding of the annular silicon steel sheet, the XY-axis moving mechanism can position the carrier cabinet 7 in a suitable working position. When the annular silicon steel sheet needs to be unloaded after winding, the XY-axis moving mechanism drives the carrier cabinet 7 to move along the X-axis and / or Y-axis directions, away from the winding shaft 1, so that the auxiliary wheels and the carrier cabinet 7 can make way for the unloading space, facilitating the movement sleeve 6 and the synchronization sleeve 4 to push the annular silicon steel sheet off the winding shaft 1. After unloading is completed, the XY-axis moving mechanism moves the carrier cabinet 7 back to the working position, ready for the next winding.

Claims

1. An auxiliary wheel for winding annular silicon steel sheets, characterized in that, include: A winding shaft is used to wind silicon steel sheets to form annular silicon steel sheets; The carrier cabinet is located on one side of the winding shaft. The carrier cabinet has a cabinet cavity, and an inner cabinet is movably installed inside the cabinet cavity. The inner cabinet can slide within the cabinet cavity in a direction close to or away from the winding shaft. The clamping wheel is rotatably mounted on the inner cabinet and is used to clamp the annular silicon steel sheet wound on the winding shaft from the outside. An elastic reset element, located between the inner cabinet and the carrier cabinet, is used to provide an elastic force to the inner cabinet in the direction of the winding axis, so that the clamping wheel body floats away from the winding axis as the thickness of the annular silicon steel sheet increases.

2. The auxiliary wheel for winding annular silicon steel sheets according to claim 1, characterized in that, It also includes a clamping force adjustment mechanism, which includes an adjustment component movably disposed in the carrier cabinet, an elastic reset component disposed between the adjustment component and the inner cabinet, and a drive mechanism connected to the adjustment component for driving its movement to change the compression degree of the elastic reset component.

3. The auxiliary wheel for winding annular silicon steel sheets according to claim 1, characterized in that, The effective clamping length of the clamping wheel is adjustable. The clamping wheel includes a first wheel and a second wheel arranged axially opposite to each other. The axial distance between the second wheel and the first wheel is adjustable, and the second wheel and the first wheel are circumferentially aligned through a sliding fit structure.

4. The auxiliary wheel for winding annular silicon steel sheets according to claim 3, characterized in that, The second wheel is connected to a telescopic drive mechanism for driving its axial movement relative to the first wheel.

5. The auxiliary wheel for winding annular silicon steel sheets according to claim 1, characterized in that, The bearing cabinet forms a limiting surface on the side near the winding shaft, which is used to limit and block the annular silicon steel sheet away from the winding shaft when the clamping wheel moves with the inner cabinet.

6. The auxiliary wheel for winding annular silicon steel sheets according to claim 3, characterized in that, The sliding fit structure includes a connector disposed at the end of the first wheel body and a groove formed at the end of the second wheel body. The connector is slidably disposed in the groove, and the outer surface of the connector smoothly transitions with the outer peripheral surfaces of the first wheel body and the second wheel body.

7. The auxiliary wheel for winding annular silicon steel sheets according to claim 1, characterized in that, The clamping wheel body is provided in two parts, and the two clamping wheel bodies are arranged at an axial interval along the winding shaft; the second wheel body of the two clamping wheel bodies is rotatably mounted on the same follower plate, and the follower plate is connected to a telescopic compensation structure, which is used to perform follower compensation when the second wheel body moves axially.

8. The auxiliary wheel for winding annular silicon steel sheets according to claim 7, characterized in that, It also includes a spot welding head and its position adjustment mechanism. The position adjustment mechanism is set on the follower plate and is used to adjust the spot welding head to the middle position of the tail end of the annular silicon steel sheet after the annular silicon steel sheet is wound.

9. The auxiliary wheel for winding annular silicon steel sheets according to claim 8, characterized in that, The position adjustment mechanism includes an adjustment rod rotatably mounted on a follower plate and a mounting block threadedly engaged with the adjustment rod. A spot welding head is mounted on the mounting block, and the adjustment rod rotates to drive the mounting block to move along its axial direction.

10. The auxiliary wheel for winding annular silicon steel sheets according to claim 1, characterized in that, The cabinet cavity is equipped with a guide structure to guide the sliding of the inner cabinet; a displacement detection device is installed in the cabinet cavity to monitor the moving distance of the inner cabinet and obtain the real-time winding thickness of the annular silicon steel sheet.

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