A motor coil winding machine

Abstract

This invention discloses a motor coil winding machine, including a base, an inlet device, a conveying assembly, a cable guide assembly, a damping assembly, and a coil winding unit, with each assembly arranged sequentially along the cable conveying direction. The cable guide assembly includes a guide drum, a shaft, and a drive component. Multiple guide blocks are axially arranged inside the guide drum, and top beads are embedded in the wire passage holes of the guide blocks. An adjustable pre-tensioning structure is formed by a wire column and a spring, allowing the top beads to roll and press against the cable surface during the rotation of the guide drum, achieving dynamic straightening of the cable's bending points. The straightened cable enters the damping assembly, which consists of a pressure roller, a bearing roller, and a damper, where a stable tension is applied to the cable under the guidance of an annular groove. This invention, through the synergistic effect of the rotational straightening structure and the constant tension control structure, can stably straighten the cable before winding and maintain a constant tension, preventing cable springback or slack, and improving coil winding quality and production stability.

Description

Technical Field

[0001] This invention relates to the field of motor coil winding equipment technology, specifically to a motor coil winding machine. Background Technology

[0002] Motor coil winding machines are key processing devices in motor manufacturing equipment. They are mainly used to wind enameled wire and other conductor materials onto a coil frame or stator core according to a predetermined winding path and number of turns, thereby forming the motor coil structure. During the coil winding process, the straightness, tension stability, and smoothness of the cable directly affect the coil arrangement quality and electrical performance. Therefore, winding equipment usually needs to be equipped with auxiliary structures such as cable guiding, conveying, straightening, and tension control to ensure the stability and consistency of the winding process.

[0003] In existing technologies, coil winding machines typically use guide rollers or fixed aligning rollers to align the cable and apply tension to the cable using tensioning rollers or damping devices. For example, in some winding equipment, the cable passes through multiple sets of fixed aligning rollers or a linearly arranged set of guide rollers before entering the winding mechanism to correct the cable's bending to a certain extent, while a tensioning mechanism maintains the tension required for winding. However, since traditional aligning structures are mostly fixed roller structures, during long-term operation, the cable and aligning rollers are mostly in sliding friction contact, which can easily cause wear or scratches to the insulation layer on the surface of the enameled wire. Especially under high-speed winding conditions, tiny particles adhering to the surface of the aligning rollers may also become embedded in the cable insulation layer, affecting the coil insulation performance and product reliability.

[0004] On the other hand, existing straightening mechanisms typically employ a fixed-direction straightening method. When the cable passes through the straightening wheel set, it is only subjected to straightening in a limited direction. For cables with bending memory, it is difficult to achieve continuous straightening in multiple directions, resulting in some residual bending remaining. Furthermore, if a stable tension control structure is lacking between the straightening and winding mechanisms, the cable is prone to springback, slack, or tension fluctuations when entering the winding area. This leads to insufficiently tight interlayer arrangement of the wound coils, and even collapse or skipped wires, affecting winding accuracy and product consistency.

[0005] Therefore, how to provide a structurally sound method that can effectively straighten cables without damaging their insulation layer, and apply stable tension to the cables after straightening so that they enter the winding mechanism in a stable straight state, thereby improving the winding quality and production efficiency of motor coils, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This invention aims to address the problems in existing motor coil winding equipment where the cable straightening structure often uses fixed straightening rollers or guide wheel sets. This straightening direction is singular and mostly involves sliding friction contact, easily causing scratches or wear on the enameled wire insulation. Furthermore, the lack of a stable tension control structure between the straightening and winding mechanisms leads to cable springback or slack when entering the winding area, affecting coil winding quality and consistency. Therefore, this invention provides a motor coil winding machine that, by incorporating a rotating cable straightening assembly and a damping assembly in conjunction before the winding mechanism, dynamically straightens the cable and maintains stable tension before it enters the winding mechanism, thereby improving coil winding accuracy and production stability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a motor coil winding machine, comprising a base, a positive cable assembly, a damping assembly, and an inlet device, a conveying assembly, and a coil winding machine unit fixed to the surface of the base. The inlet device, the conveying assembly, the positive cable assembly, the damping assembly, and the coil winding machine unit are arranged sequentially along the cable conveying direction, and are used to guide, convey, straighten, and control the tension of the cable during the coil winding process. Through the above structural arrangement, the cable undergoes sequential guidance, stable conveying, straightening, and constant tension control before entering the coil winding machine unit, thereby ensuring that the cable enters the winding area in a stable straight state.

[0008] In a preferred embodiment, the cable assembly is further configured as follows: the guide tube includes a guide drum, shafts fixed to both ends of the guide drum, and a drive unit for driving the guide drum to rotate. The guide drum is rotatably mounted on the base surface via the shafts. A plurality of guide blocks are sequentially arranged axially on the inner side of the guide drum. A plurality of symmetrically arranged screw holes are formed on the surface of the guide drum on both sides of the guide blocks. Each screw hole contains a threaded post and a spring, with the spring abutting against both sides of the guide block. The drive unit drives the guide drum to rotate, causing the guide blocks to rotate synchronously around the cable axis, thereby continuously straightening the cable under the action of the guide blocks. Simultaneously, the threaded post and spring form an adjustable pre-tension structure to adapt to the straightening requirements of cables of different specifications.

[0009] In a preferred embodiment, the guide block is further configured such that a wire-passing hole is formed on its surface, and a top bead is embedded inside the wire-passing hole. When the guide wire drum rotates, the guide block rotates synchronously with the guide wire drum, and the top bead rolls against the cable surface, thereby gradually straightening the bent parts of the cable. The rolling contact between the top bead and the cable reduces friction and avoids scratching the cable insulation layer, while simultaneously forming a multi-point straightening path, improving the cable straightening effect.

[0010] In a preferred embodiment, the drive component is further configured such that the guide wire drum rotates continuously. When the cable passes through the inner side of the guide wire drum and the shaft cylinder, the guide wire drum rotates synchronously with the guide block, so that the cable is continuously subjected to rotational straightening during the passage. This structure enables the cable to undergo a continuous dynamic straightening process when passing through the straightening mechanism, thereby effectively eliminating cable bending memory.

[0011] In a preferred embodiment, the threaded rod is further configured such that it is threaded onto the inner side of the guide drum, and the surface of the threaded rod has an internal hexagonal hole. The two ends of the spring are respectively in movable contact with the ends of the threaded rod and the guide block. The spring compression can be adjusted by rotating the threaded rod, thereby changing the preload pressure applied to the cable by the guide block, enabling the device to adapt to the straightening requirements of cables of different diameters.

[0012] In a preferred embodiment, the cable introducer is further configured such that: the introducer includes a dual guide roller structure arranged symmetrically in both the transverse and axial directions to guide the cable entering the device, ensuring a stable transport path for the cable before it enters the conveying assembly; the conveying assembly is used to laterally clamp and transport the cable, enabling it to stably enter the cable assembly. The cooperation between the introducer and the conveying assembly ensures that the cable maintains a stable position before entering the straightening structure, thereby improving straightening accuracy.

[0013] In a preferred embodiment, the damping assembly is further configured as follows: the damping component includes a fixed base, a pressure wheel, a damper, and a bearing wheel. A pressure plate is rotatably mounted on the top surface of the fixed base, the pressure wheel is rotatably mounted on the surface of the pressure plate, and the bearing wheel is fixed to the shaft end of the damper. The pressure wheel and the bearing wheel abut against each other and have an annular groove for guiding the cable. Through the clamping structure formed between the pressure wheel and the bearing wheel, a stable tension is applied to the cable under the action of the damper, so that the cable maintains a constant tension state before entering the coil winding unit.

[0014] In a preferred embodiment, the top bead embedded in the wire-passing hole of the guide block is made of high-hardness wear-resistant ceramic material or silicon nitride ceramic, and its surface is mirror-polished. By using high-hardness wear-resistant material, the friction between the top bead and the cable can be reduced and the wear resistance can be improved, thereby achieving cable straightness while avoiding damage to the enameled wire insulation layer.

[0015] In a preferred embodiment, the guide tube and guide block are further configured to be made of high-strength aluminum alloy or stainless steel, and their inner surfaces and the areas in contact with the cable are subjected to hard anodizing or hard chrome plating. This surface treatment reduces frictional resistance and improves structural wear resistance, allowing the cable to achieve a uniform micro-rolling effect during the straightening process, thereby further eliminating residual bending in the cable.

[0016] In a preferred embodiment, the annular groove surfaces of the pressure wheel and bearing wheel in the damping assembly are covered with polyurethane or wear-resistant rubber composite material and treated with surface texture. When the cable passes through this structure, the covering material provides moderate elastic cushioning, allowing the cable to maintain stable tension while avoiding damage to the insulation layer, thereby improving the stability of cable transmission.

[0017] The beneficial effects achieved by this invention are as follows: 1. In this invention, multiple guide blocks are driven to rotate synchronously by the guide wire drum in the positive cable assembly. Combined with the rolling and pressing of the high-hardness wear-resistant ceramic top ball embedded in the wire hole, and the adjustable preload of the wire column and spring, the online dynamic and damage-free elimination of cable bending points is achieved. Compared with the traditional fixed metal straightening roller, it effectively avoids scratches or embedded particles in the enameled wire insulation layer, and significantly improves the surface quality and electrical insulation reliability of the cable.

[0018] 2. In this invention, the straight cable output from the positive cable assembly immediately enters the damping assembly. The annular grooves of the pressure wheel and the bearing wheel (with surfaces covered by polyurethane or wear-resistant rubber composite material) apply a stable constant tension under the action of the damper, forming a front-to-back synergistic mechanism of "dynamic straightening + instant tension control". This avoids cable springback or slackness, ensuring that the coil layers are tightly arranged and without collapse after entering the coil winding unit, thereby improving winding accuracy and finished product consistency.

[0019] 3. In this invention, the wire guide drum and guide block are made of high-strength aluminum alloy or stainless steel and are treated with hard anodizing / hard chrome plating, resulting in low surface roughness. Combined with the low friction characteristics of the adjustable spring and ceramic top ball, it can achieve "one machine for multiple uses" to adapt to different wire diameter specifications. The overall structure is compact (arranged sequentially along the cable conveying direction), reducing the equipment footprint and manual intervention. At the same time, it reduces the scrap rate and increases the winding speed under high-speed winding, significantly improving the overall production efficiency and economy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention; Figure 2 This is a schematic diagram of the inlet, delivery assembly, and positive cable assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the positive cable assembly structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the surface structure of the guide block according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the guide wire drum and shaft drum according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a damping component structure according to an embodiment of the present invention.

[0021] Figure label: 100. Base; 110. Inlet device; 120. Conveying assembly; 130. Coil winding unit; 200. Straight cable assembly; 210. Guide wire drum; 220. Shaft cylinder; 230. Drive component; 240. Guide block; 211. Wire column; 212. Spring; 241. Top ball; 300 Damping assembly; 310 Fixing base; 320 Pressure roller; 330 Damper; 340 Bearing roller; 311 Pressure plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0024] The following describes, with reference to the accompanying drawings, some embodiments of a motor coil winding machine provided by the present invention.

[0025] Combination Figures 1-6 As shown, the present invention provides a motor coil winding machine, comprising a base 100, a cable assembly 200, a damping assembly 300, and an inlet device 110, a conveying assembly 120, and a coil winding machine unit 130 fixed to the surface of the base 100. The inlet device 110, the conveying assembly 120, the cable assembly 200, the damping assembly 300, and the coil winding machine unit 130 are arranged sequentially along the cable conveying direction. Through the above structural arrangement, the cable undergoes sequential guidance, conveying, straightening, and tension control before entering the coil winding machine unit 130, thereby ensuring that the cable maintains a stable straight state and constant tension during the winding stage, thus improving the winding accuracy and consistency of the motor coil.

[0026] In this embodiment, as Figure 2 , Figure 3 and Figure 5 As shown, the cable assembly 200 includes a guide tube 210, shaft cylinders 220 fixed to both ends of the guide tube 210, and a drive unit 230 for driving the guide tube 210 to rotate. The guide tube 210 is rotatably mounted on the surface of the base 100 via the shaft cylinders 220. The drive unit 230 is disposed at one end of the guide tube 210 and is connected to the guide tube 210 for driving the guide tube 210 to rotate around its axis. When the drive unit 230 is working, the guide tube 210 rotates stably under the support of the shaft cylinders 220, thereby driving the internal guide structure to move synchronously, so that the cable is subjected to a continuous and uniform straightening effect during the passage.

[0027] Furthermore, such as Figure 3 and Figure 5 As shown, a plurality of guide blocks 240 are sequentially arranged along the axial direction on the inner side of the wire guide drum 210. These guide blocks 240 are spaced apart along the axial direction of the wire guide drum 210, forming a continuous guiding channel for the cable to pass through. A plurality of screw holes are formed on the surface of the wire guide drum 210, symmetrically arranged on both sides of each guide block 240. A wire post 211 and a spring 212 are respectively provided inside each screw hole. The spring 212 is positioned between the wire post 211 and the guide block 240, abutting against both sides of the guide block 240. This structural arrangement allows the guide blocks 240 to maintain a stable position inside the wire guide drum 210 under the action of the spring 212, while simultaneously applying an elastic preload to the guide blocks 240.

[0028] In this embodiment, the threaded rod 211 is threadedly installed inside the guide drum 210, and an internal hexagonal adjustment hole is provided at the end of the threaded rod 211. The operator can rotate the threaded rod 211 using a tool to adjust the compression of the spring 212, thereby changing the pressure applied to the cable by the guide block 240 to accommodate the cable straightening requirements of different diameter specifications. The two ends of the spring 212 are respectively in contact with the ends of the threaded rod 211 and the guide block 240, allowing the guide block 240 to maintain a pre-tensioned state while possessing a certain degree of elastic floating capability, thus improving the stability of the straightening process.

[0029] Furthermore, such as Figure 3 and Figure 4 As shown, the guide block 240 has a cable passage hole on its surface for the cable to pass through, and a top bead 241 is embedded inside the cable passage hole. The top bead 241 is in contact with the outer surface of the cable. When the guide drum 210 rotates, the guide block 240 rotates synchronously with the guide drum 210 around the cable axis. The top bead 241 presses against the outer surface of the cable in a rolling contact manner, thereby gradually straightening the bending points of the cable. By arranging multiple guide blocks 240 sequentially along the axial direction, a multi-point rolling pressing path is formed when the cable passes through the inside of the guide drum 210, achieving continuous straightening of the cable bending state.

[0030] In this embodiment, the top bead 241 is preferably made of high-hardness wear-resistant ceramic material or silicon nitride ceramic, and its surface is mirror-polished, with a hardness of not less than HRA85. Because ceramic materials have high hardness and wear resistance, during the rotation of the wire guide drum 210, the top bead 241 can reduce friction and wear when it rolls against the cable surface, thereby achieving regular cable bending points while avoiding scratches or damage to the enameled wire insulation layer.

[0031] Furthermore, in terms of material structure, the guide tube 210 and the guide block 240 are preferably made of high-strength aluminum alloy or stainless steel. Their inner surfaces and the contact area between the guide block 240 and the cable are subjected to hard anodizing or hard chrome plating to achieve a surface roughness of Ra≤0.2μm. Through the above surface treatment, the friction between the cable and the guide structure can be further reduced. Combined with the adjustable preload structure formed by the wire column 211 and the spring 212, a uniform micro-rolling effect is formed during the cable rotation and straightening process, thereby improving the straightening quality and reducing residual bending memory.

[0032] In this embodiment, as Figure 6 As shown, the damping assembly 300 is located downstream of the cable assembly 200 and is used to apply stable tension to the straightened cable. The damping assembly 300 includes a fixed base 310, a pressure roller 320, a damper 330, and a bearing roller 340. The fixed base 310 is mounted on the surface of the base 100, and a pressure plate 311 is rotatably mounted on its top surface. The pressure roller 320 is rotatably mounted on the surface of the pressure plate 311. The damper 330 is located on one side of the fixed base 310, and the bearing roller 340 is fixedly mounted on its shaft end, so that the bearing roller 340 can provide stable damping force under the action of the damper 330.

[0033] In this structure, the pressure roller 320 and the bearing roller 340 are arranged in abutment against each other, and both surfaces are provided with annular grooves for cable guidance. When the shaped cable passes through the annular groove, it is clamped between the pressure roller 320 and the bearing roller 340, and a stable constant tension conveying state is formed under the damping action provided by the damper 330, thereby preventing the cable from springing back or slack before entering the winding unit 130.

[0034] Furthermore, the annular groove surfaces of the pressure roller 320 and the bearing roller 340 are preferably covered with polyurethane or wear-resistant rubber composite material, and the friction stability is improved through surface texturing treatment. When the cable passes through this structure, the covering material can provide moderate elastic cushioning, protecting the cable insulation layer while maintaining stable tension and preventing crushing or abrasion.

[0035] In this embodiment, as Figure 1 and Figure 2 As shown, the cable introducer 110 is located at the front end of the device and is used to smoothly introduce the cable into the equipment. The cable introducer 110 includes a double guide roller structure arranged symmetrically in the transverse and axial directions, which can initially guide the cable entering the equipment and maintain a stable conveying path for the cable before entering the conveying assembly 120. The conveying assembly 120 is located after the cable introducer 110 and includes a clamping and conveying mechanism for clamping and conveying the cable. By laterally clamping the cable, the cable can be stably introduced into the cable assembly 200.

[0036] Working principle and usage process of this invention: The motor coil winding machine of the present invention forms a complete closed-loop system of “guiding-clamping conveying-dynamic regularization-constant tension control-precision winding” by means of an inlet device 110, a conveying component 120, a positive cable component 200, a damping component 300 and a coil winding machine unit 130 arranged sequentially along the cable conveying direction.

[0037] Its core working principle is as follows: Cable guiding and conveying stage: The cable is first guided smoothly by the double guide roller structure of the inlet 110, and then laterally clamped and conveyed by the conveying component 120 to ensure that the cable is stable in position and without lateral deviation when it enters the subsequent components.

[0038] Dynamic alignment stage: The cable enters the guide drum 210. The drive unit 230 drives the guide drum 210 and the shaft cylinders 220 fixed at both ends to rotate synchronously. Multiple guide blocks 240 arranged axially along the inner side of the drum 210 rotate synchronously around the cable axis with the drum. A high-hardness wear-resistant ceramic top bead 241 is embedded in the wire passage hole of each guide block 240. The thread column 211 applies a controllable axial preload to the guide block 240 through the internal hexagonal hole adjusting spring 212, so that the top bead 241 continuously presses against the cable surface. During rotation, the top bead 241 forms a multi-point, dynamic, 360° rolling pressing path for the cable in a rolling manner, eliminating the bending points and residual bending memory of the cable in real time. At the same time, due to the low coefficient of friction and mirror-polished surface, scratches or damage to the enameled wire insulation layer are avoided.

[0039] Constant tension control stage: The straightened cable immediately enters the damping assembly 300. A pressure plate 311, rotatably mounted on the top surface of the fixed base 310, cooperates with the pressure roller 320. An annular groove (coated with polyurethane or wear-resistant rubber composite material) is formed on the surface of the bearing roller 340. The two plates abut against each other and, under the action of the damper 330, apply a stable constant tension to the cable. This tension can be precisely controlled through adjustment to prevent cable rebound or slack.

[0040] Winding stage: The cable, after dynamic alignment and constant tension control, enters the coil winding unit 130 to complete the winding of the high-precision motor coil. Because the preceding components have eliminated bending and maintained stable tension, the wound coil has tight interlayers, neat arrangement, and no collapse or skipped wires, significantly improving the electrical performance and consistency of the coil.

[0041] The key to the overall principle lies in the synergistic effect of the rotational dynamic rolling regularization of the positive cable assembly 200 and the instantaneous constant tension control of the damping assembly 300: after regularization eliminates bending memory, stable tension is immediately applied, avoiding the problems of easy scratching or tension fluctuation in traditional fixed regularization, and achieving the integrated effect of high-speed, damage-free, and precise winding.

[0042] The typical usage process of this invention is as follows: Preparation stage: Place the cable raw material in a suitable position, adjust the gap between the guide rollers of the inlet device 110 and the conveying assembly 120 to adapt to the cable specifications; adjust the preload of the spring 212 in the cable assembly 200 through the internal hexagonal hole of the wire column 211 so that the top bead 241 reaches the appropriate clamping force; adjust the damper 330 of the damping assembly 300 to ensure that the annular groove of the pressure roller 320 and the bearing roller 340 provides the target constant tension.

[0043] Cable threading: The cable is sequentially threaded through the double guide rollers of the inlet 110, the clamping mechanism of the conveying assembly 120, the wire guide drum 210 and the wire passage hole of the internal guide block 240 of the positive cable assembly 200, the pressure roller 320 and the bearing roller 340 annular groove of the damping assembly 300, and finally led to the winding head or mold of the coil winding unit 130.

[0044] Start-up: Start the drive unit 230 to make the guide drum 210 and guide block 240 start rotating; at the same time, start the conveying assembly 120 and the coil winding unit 130. The cable is clamped and conveyed forward by the conveying assembly 120 under the guidance of the inlet 110. When it enters the main cable assembly 200, it is dynamically rolled and regulated. Then it enters the damping assembly 300 for constant tension control. Finally, it is precisely wound into a motor coil by the winding unit 130.

[0045] Operation monitoring and adjustment: During operation, the spring preload can be finely adjusted in real time via the threaded rod 211, or the damper 330 can be adjusted to maintain stable tension, depending on the cable material, wire diameter, or winding speed. The rolling clamping of the top bead 241 and the annular groove of the damping assembly work together to ensure the consistency of cable surface quality and tension.

[0046] Completion and Shutdown: After reaching the set number of winding turns, the coil winding unit 130 will automatically or manually stop. Remove the wound coil and check the coil layer tightness and surface quality.

[0047] Through the above-described working principle and process, this invention achieves a compact structure, multi-functionality (adapting to various wire diameters), and efficient, damage-free production, making it particularly suitable for the high-speed precision winding requirements of motor coils.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor coil winding machine, characterized in that, include: The base (100), the positive cable assembly (200), the damping assembly (300), and the guide (110), the conveying assembly (120), and the coil winding unit (130) fixed to the surface of the base (100) are arranged sequentially along the cable conveying direction for guiding and conveying the cable during coil winding. The positive cable assembly (200) includes a wire guide drum (210), a shaft cylinder (220) fixed at both ends of the wire guide drum (210), and a driving component (230) for driving the wire guide drum (210) to rotate. The wire guide drum (210) is rotatably mounted on the surface of the base (100) through the shaft cylinder (220). A plurality of guide blocks (240) are arranged axially on the inner side of the wire guide drum (210). A plurality of screw holes are symmetrically arranged on both sides of the guide blocks (240) on the surface of the wire guide drum (210). Each screw hole is provided with a wire post (211) and a spring (212) inside. The spring (212) abuts against both sides of the guide block (240). The damping assembly (300) includes a fixed base (310), a pressure wheel (320), a damper (330), and a bearing wheel (340) fixed to the shaft end of the damper (330). A pressure plate (311) is rotatably mounted on the top surface of the fixed base (310). The pressure wheel (320) is rotatably mounted on the surface of the pressure plate (311). The surfaces of the pressure wheel (320) and the bearing wheel (340) abut against each other and are provided with an annular groove for cable guidance.

2. The motor coil winding machine according to claim 1, characterized in that, The guide block (240) has a wire hole on its surface, and a top bead (241) is embedded in the inner side of the wire hole. During the rotation of the guide block (240), the top bead (241) presses against the surface of the cable to eliminate the bending points on the surface of the cable.

3. The motor coil winding machine according to claim 1, characterized in that, The drive unit (230) is used to drive the guide wire drum (210) to rotate. When the cable passes through the inside of the guide wire drum (210) and the shaft cylinder (220), the guide wire drum (210) and the guide block (240) continue to rotate.

4. A motor coil winding machine according to claim 1, characterized in that, The threaded rod (211) is threadedly installed inside the guide tube (210). The surface of the threaded rod (211) has an internal hexagonal hole. The two ends of the spring (212) are in movable contact with the ends of the threaded rod (211) and the guide block (240).

5. A motor coil winding machine according to claim 1, characterized in that, The inlet (110) includes a double guide roller structure arranged laterally and axially symmetrically for guiding cable transport, and the transport assembly (120) is used for laterally clamping and transporting the cable.

6. A motor coil winding machine according to claim 1, characterized in that, The positive cable assembly (200) and the damping assembly (300) are arranged sequentially along the cable conveying direction, and the straightened cable directly enters the constant tension channel formed by the pressure wheel (320), the bearing wheel (340) and the damper (330).

7. A motor coil winding machine according to claim 1, characterized in that, The top bead (241) embedded in the wire hole of the guide block (240) is made of high-hardness wear-resistant ceramic material or silicon nitride ceramic, and its surface is mirror polished.

8. A motor coil winding machine according to claim 1, characterized in that, The wire guide drum (210) and the guide block (240) are made of high-strength aluminum alloy or stainless steel. Their inner surfaces and the contact area between the guide block (240) and the cable are treated with hard anodizing or hard chrome plating, and the surface roughness Ra≤0.2μm.

9. A motor coil winding machine according to claim 1, characterized in that, The annular groove surfaces of the pressure wheel (320) and bearing wheel (340) of the damping assembly (300) are covered with polyurethane or wear-resistant rubber composite material and are treated with surface texture.

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