Iron core winding machine and winding method

Abstract

The invention relates to the technical field of iron core winding, one embodiment of the invention provides an iron core winding machine and a winding method.The iron core winding machine comprises a rack, an unwinding shaft and a winding shaft and further comprises an expansion device, a conversion shaft, a cutter shaft and a synchronous adjusting device, and the expansion device is arranged on the unwinding shaft; the expansion device abuts against the inner wall of the silicon steel strip coil, the conversion shaft is rotatably arranged on the rack, the number of the winding shafts is two, the conversion shaft is fixedly connected with two sets of driving parts used for driving and limiting the winding shafts, the cutter shaft is rotatably arranged on the rack, and the synchronous adjusting device is used for synchronously adjusting the distance between the multiple cutters. By means of the technical scheme, the technical problems that in the prior art, when silicon steel strip coils and wound iron cores are taken and placed, due to the fact that hoisting and adjusting spend a long time, the cutters need to be manually adjusted when iron cores of different sizes are produced at the same time, and the iron core winding efficiency is reduced are solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of iron core winding, and in particular, to an iron core winding machine and a winding method. Background Art

[0002] The core winding machine is a special equipment for winding silicon steel sheet cores. It can produce cores in shapes such as rings and rectangles. It uses silicon steel strip coils as raw materials, which are cut into appropriate widths and then wound into specific shapes.

[0003] The current core winding machine generally includes a feeding mechanism, a guiding mechanism and a winding mechanism, and controls the tension of the silicon steel sheet. It mostly uses a single slit silicon steel sheet for winding, and the single winding efficiency is low. There are also some slitting and winding machines that can directly wind the silicon steel sheet after slitting. However, when taking and placing the silicon steel coil raw material and the wound iron core, due to the heavy weight of the silicon steel strip coil, it is generally hoisted and placed by lifting equipment such as forklifts or overhead cranes, and because it is necessary to drive the unwinding of the silicon steel strip coil and the winding of the iron core, , it is necessary to adjust the position of the unwinding and winding shafts after placement to ensure the accuracy of unwinding and winding, and the silicon steel strip coil needs to be tensioned. Therefore, it takes a long time to place the silicon steel strip coil and to wind the wound iron core, which reduces the efficiency of the iron core winding to a certain extent. In addition, when producing iron cores of different sizes, the silicon steel sheets need to be cut into different widths, and the width between the shearing knives needs to be manually adjusted, which also takes up the time of the iron core winding, reducing the efficiency of the iron core winding to a certain extent. Summary of the Invention

[0004] To overcome the above-mentioned defects, the embodiments of the present disclosure provide an iron core winding machine and a winding method, which solve the technical problems in the prior art that it takes a long time to lift and adjust the silicon steel strip and the wound iron core when taking and placing the silicon steel strip, and that the cutter needs to be manually adjusted to produce iron cores of different sizes, thereby reducing the iron core winding efficiency.

[0005] According to one aspect, at least one embodiment of the present disclosure provides an iron core winding machine, comprising a frame, an unwinding shaft, and a rewinding shaft, wherein two unwinding shafts are provided, the unwinding shafts being rotatably and movably disposed on the frame, the two unwinding shafts being able to approach each other to support a silicon steel strip coil, and further comprising: An expansion device is provided on the unwinding shaft, the expansion device abuts against the inner wall of the silicon steel strip coil, and the expansion device includes: An expansion rod, the expansion rod is rotatably connected to the unwinding shaft, an expansion spring is connected between the expansion rod and the unwinding shaft, and a limiting rod is fixedly connected to the end of the expansion rod for limiting the edge of the silicon steel strip coil; A conversion shaft, the conversion shaft is rotatably arranged on the frame, the winding shaft is provided with two, the conversion shaft is fixedly connected to two sets of driving members for driving and limiting the winding shaft, the driving members include: A drive seat, wherein two drive seats are provided, and the drive seats are movably provided on the conversion shaft, and the two ends of the winding shaft are respectively slidably engaged with the two drive seats, and one of the drive seats can rotate to drive the winding shaft to rotate; A cutter shaft, the cutter shaft is rotatably mounted on the frame, and a plurality of cutting knives are slidably mounted on the cutter shaft; A synchronous adjustment device, which is used to synchronously adjust the distance between the multiple cutting blades, and the synchronous adjustment device includes: A scissor frame, comprising a plurality of central shafts, wherein a plurality of the central shafts are rotatably connected to adjustment covers, the cutting blades are located inside the adjustment covers and move synchronously with the adjustment covers, and the distance between two adjacent adjustment covers is equal; A bidirectional screw rod 1 is rotatably arranged on the frame, and two central shafts among the plurality of central shafts are threadedly connected to the two threaded sections of the bidirectional screw rod 1.

[0006] In order to assist in taking and placing the silicon steel strip coil and the reel, it also includes a support plate, two of which are provided. The support plates are upwardly arc-shaped and can be raised and lowered on the frame. The two support plates are respectively located below the unwinding shaft and the reeling shaft away from the unwinding shaft.

[0007] In order to limit the iron core during winding, a limit plate is also included. The limit plate is connected to the adjustment cover, and the limit plate is tightly attached to the outer wall of the winding shaft during winding. A movable seat is movably provided on the frame, and the conversion shaft is rotatably provided on the movable seat.

[0008] In order to reduce the obstruction of the adjustment cover to the rotation of the cutting knife, the inner wall of the adjustment cover is rotatably connected with a plurality of balls, and the balls are in contact with the side wall of the cutting knife.

[0009] In order to reduce the obstruction of the limiting plate to the rotation of the winding shaft, the limiting plate is connected to the adjusting cover through a compression spring and a telescopic rod.

[0010] A core winding method, using the above-mentioned core winding machine, comprises the following steps: S1. The support plate at the unwinding shaft is raised to a suitable height. The silicon steel strip coil is placed on the support plate by a lifting device. The two unwinding shafts are brought close to each other, driving the expansion rod to be inserted into the inner hole of the silicon steel strip coil. The limit rod contacts the edge of the silicon steel strip coil. S2. According to the production requirements of the iron core, the bidirectional screw is driven to rotate, and the distance between the two adjacent adjustment covers is adjusted through the scissor action of the scissor frame, so that the distance between the cutting knives is adapted to the width of the iron core; S3. Place the reel on the corresponding support plate. The support plate drives the reel up to the drive seat. The drive seat moves toward the reel and limits the reel. S4, passing the end of the silicon steel strip through the cutting blade and winding it on the reel, driving the unwinding shaft, the cutting blade and the reel to rotate, the cutting blade cuts the silicon steel strip into multiple sections, the reel winds the silicon steel strip into an iron core, and after the winding is completed, the iron core is welded and fixed by external welding equipment. During the winding process, the limit plate limits the iron core; S5. During the winding process, a new winding shaft is installed between another set of drive seats. After the winding is completed, the conversion shaft is rotated to exchange the positions of the two winding shafts, so that the new winding shaft is rotated to wind the iron core. During the winding process, the support plate supports the wound winding shaft, and the drive seat is away from the winding shaft to collect the iron core. The new winding shaft is installed between the drive seats to prepare for the subsequent alternation and winding of the winding shafts.

[0011] The beneficial effects of the embodiments of the present disclosure are: 1. In the present disclosure, a support plate is used to support the silicon steel strip coil or the reeling shaft during the taking and placing process, so that the unwinding shaft can be inserted into or removed from the inner hole of the silicon steel strip coil and the drive seat can be used to clamp or release the reeling shaft. The expansion spring drives the expansion rod to tighten and limit the silicon steel strip coil. At the same time, the limit rod places the silicon steel strip coil in the center position of the two unwinding shafts, so that the unwinding shaft can drive the silicon steel strip coil to rotate for unwinding, thereby reducing the time for adjusting the position of the silicon steel strip coil.

[0012] 2. In the present disclosure, the positions of the two reeling shafts are exchanged by a conversion shaft, so that one reeling shaft can be disassembled and assembled with the other reeling shaft during the winding process, thereby reducing downtime and allowing the reeling shaft to be replaced during the winding process.

[0013] 3. In the present invention, the rotation of the bidirectional screw drives the scissor frame to perform a scissor action, thereby adjusting the position of the adjustment cover, and thus adjusting the distance between the cutting knives. Under the action of the scissor frame, the distance between two adjacent cutting knives is ensured to be equal, and the cutting width of the silicon steel sheet is conveniently adjusted to adapt to the production of iron cores of different sizes.

[0014] 4. Therefore, compared with the iron core winding machine in the prior art, the present invention lifts the silicon steel strip coil and the take-up shaft through the support plate, which is convenient for the unwinding shaft to be inserted into or pulled out of the inner hole of the silicon steel strip coil, and at the same time is convenient for the drive seat to clamp or release the take-up shaft. The two sets of expansion rods and limit rods make the silicon steel strip coil in the center position of the two unwinding shafts, and the two drive seats move synchronously to make the take-up shaft in the center position, reducing the adjustment time, and the distance between the cutting knives is synchronously adjusted by the scissor action of the scissors frame. At the same time, the adjustment cover drives the limit plate to move, and limits the iron core on the take-up shaft to ensure the accuracy of winding. The two sets of drive seats are driven to rotate by the conversion shaft to convert the positions of the two take-up shafts, so that one take-up shaft can be disassembled and assembled while the other take-up shaft is winding, shortening the collection time of the iron core and improving the winding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly describes the drawings required for use in describing the embodiments of the present disclosure. Obviously, the drawings described below are merely some exemplary embodiments of the present disclosure. Those skilled in the art can, without inventive effort, derive other drawings based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0016] Figure 1 A schematic diagram of the overall first-perspective structure of an embodiment of the present disclosure; Figure 2 for Figure 1 A schematic structural diagram of the winding shaft, the conversion shaft, the movable seat and the driving member in the embodiment; Figure 3 for Figure 1 A schematic structural diagram of a cutter shaft, a cutting knife and a synchronous adjustment device in an embodiment; Figure 4 for Figure 1 A schematic structural diagram of a motor 1, a bidirectional screw 2, a movable plate and a tightening device in an embodiment; Figure 5 for Figure 1 Schematic diagram of the exploded structure of the winding shaft, the conversion shaft, the movable seat and the driving member in the embodiment; Figure 6 for Figure 1 A schematic structural diagram of a synchronous adjustment device in an embodiment of the present invention; Figure 7 for Figure 1 A schematic structural diagram of the supporting plate and the electric cylinder three in the embodiment; Figure 8 for Figure 1 A schematic structural diagram of the overall second viewing angle in an embodiment of the present invention; Figure 9 for Figure 1Schematic diagram of the local enlarged structure at A in the middle; Figure 10 for Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0017] In the picture: 1. Frame; 2. Unwinding shaft; 3. Rewinding shaft; 4. Motor 1; 5. Bidirectional screw 2; 6. Moving plate; 7. Motor 2; 8. Driving gear; 9. Driven gear; 10. Conversion shaft; 11. Electric cylinder 1; 12. Driving rack; 13. Driven gear; 14. Cutter shaft; 15. Motor 4; 16. Cutter; 17. Limit bar; 18. Support plate; 19. Electric cylinder 3; 20. Limit plate; 21. Compression spring; 22. Moving seat; 23. Electric cylinder 4 101. Expansion rod; 102. Expansion spring; 103. Limit rod; 201, driving seat; 202, supporting frame; 203, electric cylinder 2; 204, rotating seat; 205, motor 3; 206, driving gear; 207, driven gear ring; 208, driving rod; 301. Bidirectional screw 1; 302. Scissor frame; 303. Center shaft; 304. Ball bearing; 305. Adjustment block; 306. Motor 5; 307. Adjustment cover. DETAILED DESCRIPTION The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0018] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0019] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0020] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present disclosure.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] Example 1, as Figures 1 to 10As shown, it shows an iron core winding machine in one embodiment of the present disclosure, including a frame 1, a reeling shaft 2 and a reeling shaft 3, two reeling shafts 2 are provided, the reeling shafts 2 are rotatably and movably arranged on the frame 1, the reeling shafts 2 are slidably connected to the frame 1, a motor 1 4 is installed on the frame 1, the output end of the motor 1 4 is transmission-connected to a bidirectional screw 2 5, the output end of the motor 1 4 is fixedly connected to a driving bevel gear, the external fixed sleeve of the bidirectional screw 2 5 is provided with a driven bevel gear, the driven bevel gear and the driving bevel gear are meshed, and the bidirectional screw 2 5 The two threaded segments are threadedly connected with a movable plate 6, and the unwinding shaft 2 and the movable plate 6 correspond one to one. The unwinding shaft 2 is rotatably connected to the movable plate 6. The motor 1 4 can drive the bidirectional screw 2 5 to rotate, driving the two unwinding shafts 2 to move closer to or away from each other. A motor 2 7 is installed on the movable plate 6. The output end of the motor 2 7 is fixedly connected to a driving gear 8. The outer fixed sleeve of the unwinding shaft 2 is provided with a driven gear 9. The driven gear 9 and the driving gear 8 are engaged. The driving gear 8 is driven to rotate by the motor 2 7, thereby driving the driven gear 9 and the unwinding shaft 2 rotates, the two unwinding shafts 2 can approach each other to support the silicon steel strip coil, and also includes a tensioning device, a conversion shaft 10, a cutter shaft 14 and a synchronous adjustment device. Compared with the iron core winding machine in the prior art, the present invention uses a supporting plate 18 to lift the silicon steel strip coil and the winding shaft 3, which is convenient for the unwinding shaft 2 to be inserted into or pulled out of the inner hole of the silicon steel strip coil, and at the same time, it is convenient for the driving seat 201 to clamp or release the winding shaft 3. The two sets of tensioning rods 101 and the limiting rods 103 make the silicon steel strip coil in the center position of the two unwinding shafts 2. The two driving seats 201 are synchronously The step movement makes the winding shaft 3 in the center position, reducing the adjustment time, and the distance between the cutting knives 16 is synchronously adjusted by the scissor action of the scissor frame 302. At the same time, the adjustment cover 307 drives the limit plate 20 to move, and limits the iron core on the winding shaft 3 to ensure the accuracy of winding. The two sets of drive seats 201 are driven to rotate by the conversion shaft 10 to convert the positions of the two winding shafts 3, so that one winding shaft 3 can be disassembled and assembled while the other winding shaft 3 is winding, shortening the time for collecting the iron core and improving the winding efficiency.

[0024] The expansion device is arranged on the unwinding shaft 2, and the expansion device abuts against the inner wall of the silicon steel strip coil. The expansion device includes an expansion rod 101, which is rotatably connected to the unwinding shaft 2. A tensioning spring 102 is connected between the expansion rod 101 and the unwinding shaft 2. The end of the expansion rod 101 is fixedly connected with a limiting rod 103 for limiting the edge of the silicon steel strip coil. When the motor 1 4 drives the bidirectional screw 2 5 to rotate, the two unwinding shafts 2 are close to each other, thereby driving the expansion rod 101 to extend into the inner hole of the silicon steel strip coil, and the expansion rod 101 is rotatably connected to the end near the center of the unwinding shaft 2. Multiple expansion rods 101 It is inserted into the interior of the silicon steel strip coil in a conical shape. Under the action of the expansion spring 102, the expansion rod 101 is brought into contact with the edge of the inner hole of the silicon steel strip coil until the limit rod 103 contacts the edge of the silicon steel strip coil. The two limit rods 103 limit the two ends of the silicon steel strip coil so that the silicon steel strip coil is in the middle position of the two unwinding shafts 2. The unwinding shaft 2 is driven to rotate by the motor 2 7, and the silicon steel strip coil can be driven to rotate by the expansion rod 101 and the limit rod 103 to unwind. The expansion rod 101 and the limit rod 103 are in close contact and clamped with the silicon steel strip coil to prevent the silicon steel strip coil from slipping during the unwinding process.

[0025] The conversion shaft 10 is rotatably arranged on the frame 1, and an electric cylinder 11 is installed on the frame 1. The output end of the electric cylinder 11 is fixedly connected to the driving rack 12, and the end of the conversion shaft 10 is fixedly connected to the passive gear 13. The passive gear 13 and the driving rack 12 are engaged. The electric cylinder 11 can drive the driving rack 12 to move, thereby driving the passive gear 13 and the conversion shaft 10 to rotate. There are two winding shafts 3. The conversion shaft 10 is fixedly connected with two groups of driving members for driving and limiting the winding shaft 3. The driving member includes a driving seat 201. There are two driving seats 201. The driving seat 201 is movably arranged on the conversion shaft 10. The two ends of the winding shaft 3 are respectively connected to the two driving members. The seat 201 is in a sliding fit, one of the drive seats 201 can rotate to drive the winding shaft 3 to rotate, the outside of the conversion shaft 10 is fixedly connected to two support frames 202, and two electric cylinders 203 are installed on the support frames 202. The drive seat 201 and the electric cylinder 2 203 correspond one to one, and the drive seat 201 is rotatably connected to the output end of the electric cylinder 2 203. A rotating seat 204 is slidably connected to the support frame 202. The drive seat 201 is rotatably connected to the inside of the rotating seat 204, which can ensure the stability of the drive seat 201 and improve the bearing capacity of the drive seat 201 for the winding shaft 3. The output end of the electric cylinder 2 203 on one side is installed with a motor 3 205 through a mounting plate. The output of the motor 3 205 The end is fixedly connected with a driving gear 206, and the outer fixed sleeve of the driving seat 201 is provided with a passive gear ring 207. The passive gear ring 207 and the driving gear 206 are meshed. The two corresponding driving seats 201 can be driven to move closer to or away from each other by the electric cylinder 203, so that the winding shaft 3 is inserted into the interior of the driving seat 201 or removed from the interior of the driving seat 201. The driving gear 206 can be driven to rotate by the motor 3 205, thereby driving the passive gear ring 207 and the driving seat 201 to rotate, thereby driving the winding shaft 3 to rotate to wind the silicon steel strip to form an iron core. A slot is provided on the driving seat 201, and the winding shaft 3 is slidably installed in the interior of the slot. The opening of the slot is provided with a chamfer for easy winding. The reel 3 is inserted into the interior of the slot, and the interior of the slot is connected to a drive rod 208 through a spring and a telescopic rod. The drive rod 208 is polygonal, and a drive slot matching the drive rod 208 is opened at the end of the reel 3. The end of the drive rod 208 is chamfered to facilitate the insertion of the drive rod 208 into the interior of the reel 3. Under the elasticity of the spring and the telescopic action of the telescopic rod, a rigid collision between the two is avoided when the drive rod 208 is inserted into the drive slot, and the drive rod 208 is further assisted to be inserted into the interior of the reel 3. When the drive rod 208 enters the drive slot, the reel 3 can be rotated to adapt to the angle of the drive rod 208, and the drive seat 201 drives the reel 3 to rotate through the drive rod 208.

[0026] The cutter shaft 14 is rotatably arranged on the frame 1, and a motor 4 15 is installed on the frame 1. The cutter shaft 14 is fixedly connected to the output end of the motor 4 15. A plurality of cutting knives 16 are slidably installed on the cutter shaft 14. The outside of the cutter shaft 14 is fixedly connected to a limit bar 17. The cutting knife 16 is provided with a limit groove matching the limit bar 17. The cutter shaft 14 and the cutting knife 16 can be driven to rotate by the motor 4 15. The cutting knife 16 is equipped with a cutting plate. When the silicon steel strip moves between the cutting knife 16 and the cutting plate, the cutting knife 16 and the cutting plate cooperate to cut the silicon steel strip into a suitable width. The sliding of the cutting knife 16 is realized by the limit bar 17, and at the same time, the cutter shaft 14 can drive the cutting knife 16 to rotate to cut the silicon steel strip.

[0027] The synchronous adjustment device is used to synchronously adjust the distance between multiple cutting knives 16. The synchronous adjustment device includes a scissor frame 302 and a bidirectional screw 301. The scissor frame 302 includes multiple central shafts 303, wherein several central shafts 303 are rotatably connected to adjustment covers 307. The cutting knives 16 are located inside the adjustment cover 307 and move synchronously with the adjustment cover 307. The distance between two adjacent adjustment covers 307 is equal, that is, the number of central shafts 303 between two adjacent adjustment covers 307 is equal. The inner wall of the adjustment cover 307 is rotatably connected to multiple balls 304, and the balls 304 are in contact with the side walls of the cutting knives 16. The bidirectional screw 301 is rotatably set on the frame 1. Two central shafts 303 of the multiple central shafts 303 are threadedly connected to the two threaded segments of the bidirectional screw 301, and the corresponding two central shafts 303 The upper rotation is connected with an adjustment block 305, and the two adjustment blocks 305 are threadedly matched with the bidirectional screw 301. A motor 5 306 is installed on the frame 1, and the bidirectional screw 301 is fixedly connected to the output end of the motor 5 306. The motor 5 306 can drive the bidirectional screw 301 to rotate, so that the corresponding two central axes 303 are close to or away from each other, and the scissors frame 302 performs a scissors movement, so that multiple adjustment covers 307 move synchronously, and the distance between two adjacent adjustment covers 307 is equal. The distance between multiple adjustment covers 307 can be adjusted synchronously. The cutting knife 16 is located inside the adjusting cover 307, and the adjusting cover 307 drives the cutting knife 16 to move, thereby adjusting the width of the cut silicon steel sheet. The rotation of the ball 304 can limit the cutting knife 16 while reducing the obstruction to the rotation of the cutting knife 16.

[0028] The support plates 18 are arranged on the frame 1 to assist in taking and placing the silicon steel strip coil and the take-up shaft 3. The support plates 18 are arranged with two, and the support plates 18 are upwardly arc-shaped. The support plates 18 can be lifted and lowered on the frame 1. The two support plates 18 are respectively located below the unwinding shaft 2 and the take-up shaft 3 away from the unwinding shaft 2. An electric cylinder 3 19 is installed on the frame 1. The support plates 18 are fixedly connected to the output end of the electric cylinder 3 19. At the same time, in order to improve the stability of the lifting of the support plates 18, a plurality of telescopic rods are connected between the support plates 18 and the frame 1. The silicon steel strip coil and the take-up shaft 3 can be placed above the corresponding support plates 18 by means of a lifting device, and the support plates 18 can be driven by the electric cylinder 3 19 to be lifted and lowered. When the silicon steel strip coil rises to the corresponding height of the unwinding shaft 2 or the drive seat 201, the silicon steel strip coil can be installed on the unwinding shaft 2 or removed from the unwinding shaft 2, or the take-up shaft 3 can be installed between the two drive seats 201 or removed from the drive seat 201.

[0029] In order to limit the iron core in winding, a limit plate 20 is also included. The limit plate 20 is connected by a compression spring 21 and a telescopic rod and an adjustment cover 307. The limit plate 20 is tightly attached to the outer wall of the winding shaft 3 in winding. A movable seat 22 is movably provided on the frame 1. The conversion shaft 10 is rotatably provided on the movable seat 22. An electric cylinder 4 23 is installed on the frame 1. The movable seat 22 is installed on the output end of the electric cylinder 4 23. The electric cylinder 11 is installed on the movable seat 22 and moves with it. The movable seat 22 can be driven close to or away from the limit plate 20 by the electric cylinder 4 23. When the positions of the two winding shafts 3 need to be converted, When the winding shaft 3 is rotated, the electric cylinder 23 drives the movable seat 22 away from the limit plate 20, so as to avoid the limit plate 20 from obstructing the winding shaft 3 when the conversion shaft 10 drives the winding shaft 3 to rotate. After the conversion is completed, the electric cylinder 23 drives the movable seat 22 close to the limit plate 20 so that the winding shaft 3 and the limit plate 20 are in close contact. The positions of the limit plate 20 and the cutting knife 16 correspond to each other, and the two sides of the iron core during the winding process can be limited to ensure the stability of the winding. At the same time, under the elastic action of the compression spring 21 and the telescopic action of the telescopic rod, the limit plate 20 and the winding shaft 3 are in close contact, while minimizing the obstruction of the rotation of the winding shaft 3 caused by the limit plate 20.

[0030] Embodiment 2: This embodiment discloses a core winding method, which uses the above-mentioned core winding machine and includes the following steps: S1, the support plate 18 at the unwinding shaft 2 is raised to a suitable height, and the silicon steel strip is placed on the support plate 18 by the lifting equipment. The two unwinding shafts 2 are moved closer to each other, driving the tension rod 101 to be inserted into the inner hole of the silicon steel strip. The limit rod 103 contacts the edge of the silicon steel strip, limiting the silicon steel strip in the middle position between the two unwinding shafts 2; S2. According to the production requirements of the iron core, the bidirectional screw 301 is driven to rotate, and the distance between two adjacent adjustment covers 307 is adjusted through the scissor action of the scissor frame 302, so that the distance between the cutting blades 16 is adapted to the width of the iron core; S3. Place the reel 3 on the corresponding support plate 18. The support plate 18 drives the reel 3 to rise to the drive seat 201. The drive seat 201 approaches the reel 3 and limits the reel 3. The reel 3 is inserted into the slot. The drive rod 208 is inserted into the drive slot. The reel 3 is limited to the middle position between the two drive seats 201. The spool of silicon steel strip is wound on the reel 3 by the cutting blade 16 and the cutting plate, and is then wound on the reel 3, and the unwinding shaft 2, the cutting blade 14 and the reel 3 are driven to rotate, and the cutting blade 16 cuts the silicon steel strip into multiple sections. The reel 3 winds the silicon steel strip into an iron core, and after the reeling is completed, the iron core is welded and fixed by an external welding device during the reeling process. A limiting plate 20 limits the iron core in the width direction. A pressure roller can be provided on the outside of the reel 3 to press the silicon steel sheet onto the reel 3 through the pressure roller to ensure that the iron core is in a tightened state during the reeling process. At the same time, a tensioning device can be provided during the conveying process to tension the silicon steel sheet. The silicon steel sheet can be fixed on the outside of the reel 3 by welding. The cutting and fixing of the silicon steel sheet during the reeling process and after the reeling is the existing technology of the existing winding machine, not the innovation of the present disclosure, and will not be described in detail here. S5. During the winding process, a new winding shaft 3 is installed between another set of drive seats 201. After the winding is completed, the conversion shaft 10 is rotated to exchange the positions of the two winding shafts 3, so that the new winding shaft 3 is rotated to wind the iron core. During the winding process, the support plate 18 supports the wound winding shaft 3, so that the drive seat 201 is away from the winding shaft 3 to collect the iron core, and the new winding shaft 3 is installed between the drive seats 201 to prepare for the subsequent alternation and winding of the winding shaft 3.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not limiting. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all of these should be included in the scope of the claims of the present disclosure.

Claims

1. An iron core winding machine, comprising a frame (1), a reeling shaft (2) and a reeling shaft (3), characterized in that: The unwinding shafts (2) are provided with two, and the unwinding shafts (2) are rotatably and movably provided on the frame (1), and the two unwinding shafts (2) can be close to each other to support the silicon steel strip coil, and further include: An expansion device, the expansion device being arranged on the unwinding shaft (2), the expansion device being in contact with the inner wall of the silicon steel strip coil; A conversion shaft (10), the conversion shaft (10) being rotatably disposed on the frame (1), two winding shafts (3) being provided, and the conversion shaft (10) being fixedly connected to two sets of driving members for driving and limiting the winding shafts (3); A cutter shaft (14), the cutter shaft (14) being rotatably mounted on the frame (1), and a plurality of cutting knives (16) being slidably mounted on the cutter shaft (14); A synchronous adjustment device is used to synchronously adjust the distance between the plurality of cutting knives (16).

2. The iron core winding machine according to claim 1, characterized in that: The expansion device comprises: An expansion rod (101) is rotatably connected to the unwinding shaft (2), an expansion spring (102) is connected between the expansion rod (101) and the unwinding shaft (2), and a limiting rod (103) for limiting the edge of the silicon steel strip coil is fixedly connected to the end of the expansion rod (101).

3. The iron core winding machine according to claim 2, characterized in that: The driving member includes: A drive seat (201), wherein two drive seats (201) are provided, and the drive seats (201) are movably provided on the conversion shaft (10), and the two ends of the winding shaft (3) are respectively in sliding cooperation with the two drive seats (201), and one of the drive seats (201) can rotate to drive the winding shaft (3) to rotate.

4. The iron core winding machine according to claim 3, characterized in that: The synchronous adjustment device comprises: A scissor frame (302), the scissor frame (302) comprising a plurality of central shafts (303), wherein a plurality of the central shafts (303) are rotatably connected to an adjustment cover (307), the cutting knife (16) is located inside the adjustment cover (307) and moves synchronously with the adjustment cover (307), and the distance between two adjacent adjustment covers (307) is equal; A bidirectional screw rod (301) is rotatably arranged on the frame (1), and two of the central shafts (303) are threadedly connected to the two threaded sections of the bidirectional screw rod (301).

5. The iron core winding machine according to claim 4, characterized in that: It also includes a supporting plate (18), two of which are provided. The supporting plates (18) can be lifted and lowered on the frame (1), and the two supporting plates (18) are respectively located below the unwinding shaft (2) and the reeling shaft (3) away from the unwinding shaft (2).

6. The iron core winding machine according to claim 5, characterized in that: The supporting plate (18) is in an upward arc shape.

7. The iron core winding machine according to claim 6, characterized in that: The machine frame (1) further comprises a limit plate (20), wherein the limit plate (20) is connected to the adjustment cover (307), and the limit plate (20) is in close contact with the outer wall of the winding shaft (3) in the winding state. A movable seat (22) is movably provided on the frame (1), and the conversion shaft (10) is rotatably provided on the movable seat (22).

8. The iron core winding machine according to claim 7, characterized in that: The inner wall of the adjustment cover (307) is rotatably connected to a plurality of balls (304), and the balls (304) are in contact with the side wall of the cutting knife (16).

9. The iron core winding machine according to claim 8, characterized in that: The limiting plate (20) is connected to the adjustment cover (307) via a compression spring (21) and a telescopic rod.

10. A core winding method using the core winding machine according to claim 9, characterized in that: The following steps are involved: S1, the support plate (18) at the unwinding shaft (2) is raised to a suitable height, and the silicon steel strip coil is placed on the support plate (18) by a hoisting device, and the two unwinding shafts (2) are moved closer to each other, driving the expansion rod (101) to be inserted into the inner hole of the silicon steel strip coil, and the limit rod (103) contacts the edge of the silicon steel strip coil; S2. According to the production requirements of the iron core, the bidirectional screw rod (301) is driven to rotate, and the distance between two adjacent adjustment covers (307) is adjusted by the scissor action of the scissor frame (302), so that the distance between the cutting blades (16) is adapted to the width of the iron core; S3, placing the reel (3) on the corresponding support plate (18), the support plate (18) drives the reel (3) to rise to the drive seat (201), the drive seat (201) approaches the reel (3) and limits the reel (3); S4, passing the end of the silicon steel strip through the cutting knife (16) and winding it on the reel (3), driving the unwinding shaft (2), the cutting knife shaft (14) and the reel (3) to rotate, the cutting knife (16) cuts the silicon steel strip into multiple sections, the reel (3) winds the silicon steel strip into an iron core, and after the winding is completed, the iron core is welded and fixed by an external welding device. During the winding process, the limit plate (20) limits the iron core; S5. During the winding process, a new winding shaft (3) is installed between another set of drive seats (201). After the winding is completed, the conversion shaft (10) is rotated to exchange the positions of the two winding shafts (3), so that the new winding shaft (3) is rotated to wind the iron core. During the winding process, the support plate (18) supports the wound winding shaft (3), so that the drive seat (201) is away from the winding shaft (3) to collect the iron core, and the new winding shaft (3) is installed between the drive seats (201) to prepare for the subsequent alternation and winding of the winding shaft (3).

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