Automatic winding equipment for square wire air-core coil

Abstract

The invention discloses automatic winding equipment for a square wire air core coil. The automatic winding equipment comprises a workbench, a coaxial rotating mechanism, a first winding shaft, a second winding shaft, a wire arranging mechanism, a wire pressing mechanism, a winding mold, a mold sleeve and a telescopic moving mechanism. The coaxial rotating mechanism is used for driving the first winding shaft and the second winding shaft to rotate synchronously; the wire pressing mechanism is used for positioning and winding the square wire on the wire spool; the winding die is used as a forming carrier for winding a coil in a preset shape by a square wire, and a corresponding coil structure can be formed according to the shape of the winding die. The coaxial rotating mechanism drives the first winding shaft and the second winding shaft to rotate synchronously, the wire outlet position and the mold inlet angle of the square wire are adjusted in cooperation with a three-axis moving module in the wire arranging mechanism, the conveying process of the square wire is controlled, the square wire is not prone to being twisted or turned over in the wire winding process, and the production efficiency of the square wire is improved. Therefore, stable and automatic winding of similar round wires is achieved, and the winding quality and the applicability of equipment are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of coil winding equipment, and more particularly to an automatic winding equipment for square hollow coils. Background Technology

[0002] A coil is an electromagnetic component formed by continuously winding conductive wire along a predetermined trajectory. It is widely used in wireless communication, automotive electronics, high-frequency filtering, inductive transmission, and air-core magnetic torque converters, among many other fields. Currently, the wire used for winding coils is typically round wire with a circular cross-section. However, with increasing requirements for conductivity and winding density in related products, some coils are beginning to use square or rectangular wire to improve space utilization and coil performance. However, compared to round wire, square wire is more prone to twisting, flipping, and shifting during transport and winding. Existing coil winding methods... Most equipment is designed for round wires. When winding square wires, it is prone to phenomena such as flipping, twisting, and misalignment, resulting in uneven wire laying and wire piling, which affects the winding quality of the product. At the same time, the existing equipment has relatively insufficient reliability in positioning and clamping the beginning and end of square wires. During wire winding and switching, loosening, deviation, or abnormal winding can easily occur, which affects product yield and processing efficiency. In addition, after the coil is wound, the demolding and material removal process is usually quite complicated. It is easy to squeeze or pull the formed coil during demolding, which affects the forming quality of the coil and production efficiency.

[0003] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic winding device for square wire hollow coils that can prevent square wire from twisting and turning and achieve stable automatic winding.

[0005] To achieve this objective, the present invention adopts the following technical solution: an automatic winding device for square hollow coils, comprising a worktable, a coaxial rotating mechanism, a first winding shaft, a second winding shaft, a wire laying mechanism, a wire pressing mechanism, a winding mold, a mold sleeve, and a telescopic moving mechanism; The workbench is provided with a base, which has a U-shaped structure. The first winding shaft and the second winding shaft are rotatably disposed on both sides of the base. The coaxial rotating mechanism is disposed inside the base and is simultaneously connected to the first winding shaft and the second winding shaft to drive the first winding shaft and the second winding shaft to rotate synchronously. The first winding shaft has a winding disc at its end, and the wire pressing mechanism is provided on the first winding shaft. The wire pressing mechanism is used to position and wind the square wire onto the winding disc. The winding mold is disposed on the second winding shaft. The winding mold is used to form and wind square wire. The mold sleeve is disposed on the second winding shaft, and the mold sleeve is provided with a mold channel for the winding mold to extend and retract. The extension and retraction mechanism is connected to the mold sleeve to drive the mold sleeve to move laterally in the horizontal direction, so as to drive the winding mold to extend or retract the mold channel. The wire laying mechanism includes a three-axis moving module, a wire pressing bracket, and a wire feeding clamp. The wire pressing bracket is connected to the moving end of the three-axis moving module, and the wire feeding clamp is disposed on the wire pressing bracket. The three-axis moving module is used to drive the wire feeding clamp to move along the X-axis, Y-axis, and Z-axis directions so that the wire feeding clamp can wind the square wire onto the winding mold.

[0006] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the coaxial rotation mechanism includes a drive motor, a transmission shaft, a first pulley assembly, and a second pulley assembly. The transmission shaft is horizontally arranged inside the base, and the drive motor is connected to the transmission shaft to drive the transmission shaft to rotate. One end of the transmission shaft is connected to the first winding shaft through the first pulley assembly, and the other end is connected to the second winding shaft through the second pulley assembly.

[0007] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the winding reel is provided with a winding guide groove, which is used to guide the square wire to be wound on the pressing mechanism.

[0008] Using the above technical solution, in the automatic winding device for square wire hollow coils, the wire pressing mechanism includes a transverse pushing component, a wire pressing disc, a sliding sleeve, a first spring, and wire pressing pins. The sliding sleeve is slidably disposed on a first winding shaft inside the winding disc and is connected to the wire pressing disc. The first spring is disposed on the first winding shaft and is used to apply an elastic pressing force to the sliding sleeve toward the winding disc. A plurality of wire pressing pins are spaced apart along the circumferential direction of the wire pressing disc. The transverse pushing component is disposed on the base, and its movable end is connected to the sliding sleeve. The transverse pushing component is used to drive the sliding sleeve to slide along the extension direction of the first winding shaft, so as to drive the wire pressing disc to move axially along the first winding shaft and cause the wire pressing pins to clamp the square wire onto the winding disc or release the clamping of the square wire.

[0009] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the pressure plate is provided with a first pressure groove and a second pressure groove along the circumference. The first pressure groove is used to clamp and position the winding start end of the square wire, and the second pressure groove is used to clamp and position the winding end of the square wire, so that the square wire is wound between the winding plate and the winding mold.

[0010] Using the above technical solution, in the automatic winding equipment for square hollow coils, the telescopic moving mechanism includes a linear screw module, a clamping arm, and a moving guide assembly. The mold sleeve is slidably mounted on the second winding shaft. The movable end of the linear screw module is connected to the mold sleeve through a connecting block to drive the mold sleeve to move axially along the second winding shaft. The moving guide assembly is mounted on the base and connected to the clamping groove on the mold sleeve through the clamping arm.

[0011] Using the above technical solution, the telescopic movement mechanism in the automatic winding equipment for square hollow coils further includes a second spring. The second spring is disposed between the mold sleeve and the second winding shaft. The second spring is used to apply a spring force to the mold sleeve to move in the direction of the first winding shaft.

[0012] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the three-axis moving module includes an X-axis moving module, a Y-axis moving module, and a Z-axis moving module. The Z-axis moving module is mounted on the base, and its movable end is connected to the X-axis moving module. The movable end of the X-axis moving module is connected to the Y-axis moving module, and the movable end of the Y-axis moving module is connected to the wire pressing bracket.

[0013] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the wire pressing bracket is provided with several clamping blocks, which are arranged sequentially along the conveying direction of the square wire to guide and clamp the square wire.

[0014] Using the above technical solution, in the automatic winding equipment for square wire hollow coils, the wire feeding clamp is provided with a rectangular channel for the square wire to pass through.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a coaxial rotating mechanism to simultaneously drive the first and second winding shafts to rotate synchronously. This allows the winding disc at the end of the first winding shaft to engage with the winding mold on the second winding shaft for winding, preventing wire slack, misalignment, or winding instability caused by unilateral driving and improving winding stability. Simultaneously, the three-axis moving module in the wire feeding mechanism drives the wire pressing bracket and the wire feeding clamp to adjust in the X, Y, and Z axes. This allows the wire feeding clamp to adjust the exit position and entry angle of the square wire in real time according to the contour of the winding mold, thereby controlling the conveying process of the square wire and preventing it from twisting, flipping, or shifting during winding, thus improving winding quality. Furthermore, the square wire can be wound into square, circular, or other shaped coil structures according to the structure of the winding mold, improving the applicability of the equipment. In addition, a telescopic moving mechanism drives the mold sleeve to move relative to the winding mold, allowing the winding mold to retract into the mold channel after winding, achieving automatic coil demolding. This avoids squeezing or pulling the coil during material handling, thereby improving demolding reliability and increasing production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the coaxial rotation mechanism of the present invention; Figure 4 This is a schematic diagram of the wiring mechanism of the present invention; Figure 5 This is a schematic diagram of the wire feeding clamp structure of the present invention; Figure 6 This is a schematic diagram of the wire pressing mechanism of the present invention; Figure 7This is a schematic diagram of the crimping mechanism of the present invention from another perspective; Figure 8 This is a schematic diagram of the mold sleeve structure of the present invention; Figure 9 This is a schematic diagram of the winding mold installation structure of the present invention; Figure 10 This is a schematic diagram of the second spring mounting structure of the present invention. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 10As shown, this embodiment of the invention provides an automatic winding device for square wire hollow coils, including a worktable 1, a coaxial rotating mechanism 2, a first winding shaft 31, a second winding shaft 32, a wire laying mechanism 4, a wire pressing mechanism 5, a winding mold 6, a mold sleeve 7, and a telescopic moving mechanism 8. The worktable 1 is provided with a base 10, which has a U-shaped structure. The first winding shaft 31 and the second winding shaft 32 are rotatably mounted on both sides of the base 10. The coaxial rotating mechanism 2 is located inside the base 10 and is simultaneously connected to the first winding shaft 31 and the second winding shaft 32 to drive them to rotate synchronously. A winding disc 311 is provided at the end of the first winding shaft 31. The wire pressing mechanism 5 is located on the first winding shaft 31 and is used to position and wind the square wire onto the winding disc 311. The winding mold 6 is mounted on the second winding shaft 32. The winding mold 6 is used to shape and wind square wire. The mold sleeve 7 is mounted on the second winding shaft 32, and the mold sleeve 7 is provided with a mold channel 70 for the winding mold 6 to extend and retract. The telescopic movement mechanism 8 is connected to the mold sleeve 7 to drive the mold sleeve 7 to move laterally in the horizontal direction, so as to drive the winding mold 6 to extend or retract the mold channel 70. The wire feeding mechanism 4 includes a three-axis moving module 41, a wire pressing bracket 42, and a wire feeding clamp 43. The wire pressing bracket 42 is connected to the moving end of the three-axis moving module 41. The wire feeding clamp 43 is mounted on the wire pressing bracket 42. The three-axis moving module 41 is used to drive the wire feeding clamp 43 to move in the X-axis, Y-axis, and Z-axis directions, so that the wire feeding clamp 43 winds the square wire onto the winding mold 6.In this embodiment, the pressing mechanism 5 positions the beginning of the square wire on the winding disc 311 at the end of the first winding shaft 31. Then, the coaxial rotation mechanism 2 drives the first winding shaft 31 and the second winding shaft 32 to rotate synchronously. The winding disc 311 and the pressing mechanism 5 on the first winding shaft 31 side are mainly used for clamping and stabilizing the beginning of the square wire. The winding mold 6 on the second winding shaft 32 side serves as the winding forming carrier. Synchronous rotation of both avoids the square wire from becoming loose, shifting, or unstable due to asynchronous traction during single-sided driving. Simultaneously, the wire feeding mechanism 4, through the three-axis moving module 41, drives the pressing bracket 42 and the wire feeding clamp 43 to perform linkage adjustment in the X, Y, and Z axes, enabling the wire feeding clamp 43 to adjust the exit position of the square wire in real time according to the contour of the winding mold 6. The entry angle of the die controls the conveying process of the square wire, preventing it from twisting, flipping, or shifting during winding. It also ensures the wire adheres appropriately to the surface of the winding die 6, improving winding stability and quality. During continuous winding, the pressing mechanism 5 maintains stable force on the square wire at the winding reel 311 by pressing and releasing it, reducing loosening at the beginning or end and wire shifting. After the coil is wound, the telescopic movement mechanism 8 activates, and the die sleeve 7 moves laterally in the horizontal direction, causing the winding die 6 to retract relative to the die channel 70. This achieves automatic demolding, preventing squeezing, pulling, or deformation of the formed coil during demolding and material handling. This facilitates the smooth removal of the finished coil from the winding die 6 and improves demolding reliability and production efficiency.

[0023] like Figure 3 As shown, the coaxial rotation mechanism 2 further includes a drive motor 21, a transmission shaft 22, a first pulley assembly 23, and a second pulley assembly 24. The transmission shaft 22 is horizontally disposed within the base 10. The drive motor 21 is connected to the transmission shaft 22 to drive the transmission shaft 22 to rotate. One end of the transmission shaft 22 is connected to the first winding shaft 31 via the first pulley assembly 23, and the other end is connected to the second winding shaft 32 via the second pulley assembly 24. In this way, the first winding shaft 31 and the second winding shaft 32 can maintain stable synchronous rotation during the winding process, avoiding the speed error or phase deviation problems that occur when using independent drive.

[0024] like Figure 6 and Figure 7 As shown, the winding disc 311 is further provided with a winding guide groove 3110, which is used to guide the square wire to be wound on the pressing mechanism 5. In this way, the square wire can smoothly transition to the position of the pressing mechanism 5 along a preset path when the winding disc 311 rotates. The pressing mechanism 5 presses and positions the square wire, reducing the jumping or deflection of the square wire in the initial stage of winding, thereby ensuring the stability of the subsequent winding process.

[0025] like Figures 8 to 10 As shown, the pressing mechanism 5 further includes a lateral pushing component 51, a pressing disc 52, a sliding sleeve 53, a first spring 54, and pressing pins 55. The sliding sleeve 53 is slidably disposed on the first winding shaft 31 inside the winding disc 311, and the sliding sleeve 53 is connected to the pressing disc 52. The first spring 54 is disposed on the first winding shaft 31 and is used to apply an elastic pressing force to the sliding sleeve 53 toward the winding disc 311. A plurality of pressing pins 55 are spaced apart along the circumferential direction of the pressing disc 52. The lateral pushing component 51 is disposed on the base 10, and its movable end is connected to the sliding sleeve 53. The lateral pushing component 51 is used to drive the sliding sleeve 53 to slide along the extension direction of the first winding shaft 31, so as to drive the pressing disc 52 to move along the axial direction of the first winding shaft 31, and cause the pressing pins 55 to clamp the square wire onto the winding disc 311 or release the clamping of the square wire. When the lateral pushing component 51 is not driven, the first spring 54 applies an elastic clamping force to the sliding sleeve 53 toward the winding reel 311, thereby causing the pressure plate 52 and the pressure pin 55 to automatically move closer to the winding reel 311, so that the pressure pin 55 reliably presses the square wire onto the winding reel 311, achieving stable clamping of the beginning of the square wire; when it is necessary to release the square wire or switch wires, the lateral pushing component 51 drives the sliding sleeve 53 to move along the extension direction of the first winding shaft 31, so that the pressure plate 52 overcomes the elastic force of the first spring 54 and moves axially away from the winding reel 311, thereby driving the pressure pin 55 to simultaneously retract from the square wire, so that the square wire is released from clamping and completed.

[0026] like Figure 6 and Figure 7As shown, the pressure plate 52 is further provided with a first pressure groove 521 and a second pressure groove 522 along the circumferential direction. The first pressure groove 521 is used to clamp the winding start end of the positioning square wire, and the second pressure groove 522 is used to clamp the winding end of the positioning square wire, so that the square wire is wound between the winding plate 311 and the winding mold 6. A first pressure groove 521 is provided on the pressure plate 52 to clamp and position the beginning of the square wire in a predetermined position, so that the square wire will not slip or deviate in the initial stage of winding, thereby ensuring that the subsequent winding process proceeds stably according to the preset path. As the winding process continues, the square wire gradually forms a coil structure on the winding mold 6. It should be noted that the coil structure can be a square coil, a circular coil, or a coil of other shapes. When the predetermined number of turns is reached, the end of the square wire needs to be fixed to prevent the square wire from unwinding or deforming due to springback or slack after the coil is completed. At this time, by providing a second pressure groove 522, the winding end of the square wire can be clamped and positioned, so that the end of the square wire is stably fixed on the winding plate 311 after the winding is completed, thereby ensuring the stability of the overall coil structure.

[0027] like Figure 8 and Figure 9 As shown, the telescopic moving mechanism 8 further includes a linear screw module 81, a clamping arm 82, and a moving guide assembly 83. The mold sleeve 7 is slidably mounted on the second winding shaft 32. The movable end of the linear screw module 81 is connected to the mold sleeve 7 via a connecting block to drive the mold sleeve 7 to move axially along the second winding shaft 32. The moving guide assembly 83 is mounted on the base 10 and connected to the clamping groove 71 on the mold sleeve 7 via the clamping arm 82. During the winding operation, the winding mold 6 can wind the coil to form a coil structure of a preset shape. After winding, the mold sleeve 7 moves axially along the second winding shaft 32, which can change the relative position between the mold sleeve 7 and the winding mold 6 after winding, allowing the winding mold 6 to retract relative to the mold channel 70. This achieves automatic demolding of the coil winding, avoiding deformation of the coil due to compression or interference during demolding, simplifying the material handling process, and improving the automation level and production efficiency of the equipment.

[0028] like Figure 10As shown, the telescopic movement mechanism 8 further includes a second spring 84, which is located between the mold sleeve 7 and the second winding shaft 32. The second spring 84 applies a spring force to the mold sleeve 7 to move towards the first winding shaft 31. Under the action of this spring force, the mold sleeve 7 maintains a certain position relative to the second winding shaft 32, so that the winding mold 6 extends out of the mold channel 70 and is in the working position, thereby providing a forming support structure for the winding of the square wire, so that the square wire is wound around the outer contour of the winding mold 6 to form a coil structure of a preset shape. When the winding is finished and demolding is required, the linear screw module 81 drives the mold sleeve 7 to move along the direction of the second winding shaft 32 against the spring force of the second spring 84, so that the mold sleeve 7 is displaced relative to the winding mold 6, thereby causing the winding mold 6 to retract into the mold channel 70, providing a space for the formed coil to be removed, and thus realizing the smooth demolding of the coil.

[0029] like Figure 1 and Figure 4 As shown, the three-axis moving module 41 further includes an X-axis moving module 411, a Y-axis moving module 412, and a Z-axis moving module 413. The Z-axis moving module 413 is disposed on the base 10, and its movable end is connected to the X-axis moving module 411. The movable end of the X-axis moving module 411 is connected to the Y-axis moving module 412, and the movable end of the Y-axis moving module 412 is connected to the wire pressing bracket 42. By superimposing the Z-axis moving module 413, X-axis moving module 411, and Y-axis moving module 412, the wire pressing bracket 42 and the wire feeding clamp 43 can move flexibly in three-dimensional space. This ensures that the square wire always enters the winding mold 6 area at a suitable position and angle during the winding process, thus stabilizing the feeding process of the square wire and preventing it from twisting, flipping, or shifting during the winding process. At the same time, it can adapt to different winding trajectories at each side and corner of the winding mold 6, reducing the swaying, displacement, or wire piling phenomenon of the square wire during the winding process, thereby improving the stability of the square wire winding process and the winding quality of the coil.

[0030] like Figure 4 As shown, the wire pressing bracket 42 is further provided with a plurality of clamping blocks 421. The clamping blocks 421 are arranged sequentially along the conveying direction of the square wire to guide and clamp the square wire. In this way, the square wire can be kept on the predetermined conveying trajectory, reducing the swaying phenomenon of the square wire during the conveying process. At the same time, it can also keep the square wire in a stable tension state when the winding shaft rotates and pulls, avoiding the problem of wire skipping or uneven wire laying due to tension fluctuations, thereby improving the wire laying stability and forming quality of the square wire during the winding process.

[0031] like Figure 5As shown, the wire feeding fixture 43 is further provided with a rectangular channel 430 for the square wire to pass through. By setting a rectangular channel 430 on the wire feeding fixture 43 that matches the cross-sectional shape of the square wire, the square wire can be guided and limited, so that the square wire always maintains a predetermined direction when passing through the wire feeding fixture 43, thereby preventing the square wire from rotating during the conveying process, and allowing the square wire to form a coil structure of a preset shape along the outer contour of the winding mold 6.

[0032] Components not described in detail in this article are existing technologies and will not be elaborated upon here.

[0033] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic winding device for square hollow wire coils, characterized in that, It includes a worktable, a coaxial rotating mechanism, a first winding shaft, a second winding shaft, a wire laying mechanism, a wire pressing mechanism, a winding die, a die sleeve, and a telescopic moving mechanism; The workbench is provided with a base, which has a U-shaped structure. The first winding shaft and the second winding shaft are rotatably disposed on both sides of the base. The coaxial rotating mechanism is disposed inside the base and is simultaneously connected to the first winding shaft and the second winding shaft to drive the first winding shaft and the second winding shaft to rotate synchronously. The first winding shaft has a winding disc at its end, and the wire pressing mechanism is provided on the first winding shaft. The wire pressing mechanism is used to position and wind the square wire onto the winding disc. The winding mold is disposed on the second winding shaft. The winding mold is used to form and wind square wire. The mold sleeve is disposed on the second winding shaft, and the mold sleeve is provided with a mold channel for the winding mold to extend and retract. The extension and retraction mechanism is connected to the mold sleeve to drive the mold sleeve to move laterally in the horizontal direction, so as to drive the winding mold to extend or retract the mold channel. The wire laying mechanism includes a three-axis moving module, a wire pressing bracket, and a wire feeding clamp. The wire pressing bracket is connected to the moving end of the three-axis moving module, and the wire feeding clamp is disposed on the wire pressing bracket. The three-axis moving module is used to drive the wire feeding clamp to move along the X-axis, Y-axis, and Z-axis directions so that the wire feeding clamp can wind the square wire onto the winding mold.

2. The automatic winding device for square hollow coils according to claim 1, characterized in that, The coaxial rotation mechanism includes a drive motor, a transmission shaft, a first pulley assembly, and a second pulley assembly. The transmission shaft is horizontally disposed within the base. The drive motor is connected to the transmission shaft to drive the transmission shaft to rotate. One end of the transmission shaft is connected to the first winding shaft via the first pulley assembly, and the other end is connected to the second winding shaft via the second pulley assembly.

3. The automatic winding device for square hollow coils according to claim 1, characterized in that, The winding reel is provided with a winding guide groove, which is used to guide the square wire to be wound on the pressing mechanism.

4. The automatic winding device for square hollow coils according to claim 2, characterized in that, The pressing mechanism includes a lateral pushing component, a pressing disc, a sliding sleeve, a first spring, and pressing pins. The sliding sleeve is slidably disposed on a first winding shaft inside the winding disc and is connected to the pressing disc. The first spring is disposed on the first winding shaft and is used to apply an elastic pressing force to the sliding sleeve toward the winding disc. A plurality of pressing pins are spaced apart along the circumferential direction of the pressing disc. The lateral pushing component is disposed on the base, and its movable end is connected to the sliding sleeve. The lateral pushing component is used to drive the sliding sleeve to slide along the extension direction of the first winding shaft, thereby driving the pressing disc to move axially along the first winding shaft and causing the pressing pins to clamp the square wire onto the winding disc or release the clamping of the square wire.

5. The automatic winding device for square hollow coils according to claim 4, characterized in that, The pressure plate is provided with a first pressure groove and a second pressure groove along the circumference. The first pressure groove is used to clamp the starting end of the positioning square wire and the second pressure groove is used to clamp the winding end of the positioning square wire, so that the square wire is wound between the winding plate and the winding mold.

6. The automatic winding device for square hollow coils according to claim 1, characterized in that, The telescopic moving mechanism includes a linear screw module, a clamping arm, and a moving guide assembly. The mold sleeve is slidably mounted on the second winding shaft. The movable end of the linear screw module is connected to the mold sleeve via a connecting block to drive the mold sleeve to move axially along the second winding shaft. The moving guide assembly is mounted on the base and is connected to the clamping groove on the mold sleeve via the clamping arm.

7. The automatic winding device for square hollow coils according to claim 1, characterized in that, The telescopic movement mechanism further includes a second spring, which is disposed between the mold sleeve and the second winding shaft. The second spring is used to apply a spring force to the mold sleeve to move toward the first winding shaft.

8. The automatic winding device for square hollow coils according to claim 1, characterized in that, The three-axis moving module includes an X-axis moving module, a Y-axis moving module, and a Z-axis moving module. The Z-axis moving module is mounted on the base, and its movable end is connected to the X-axis moving module. The movable end of the X-axis moving module is connected to the Y-axis moving module, and the movable end of the Y-axis moving module is connected to the wire pressing bracket.

9. The automatic winding device for square hollow coils according to claim 8, characterized in that, The wire pressing bracket is provided with several clamping blocks, which are arranged sequentially along the conveying direction of the square wire to guide and clamp the square wire.

10. The automatic winding device for square hollow coils according to claim 8, characterized in that, The wire feeding fixture is provided with a rectangular channel for square wires to pass through.

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