Quantitative glue sealing device for step motor stator enameled wire

Abstract

This invention relates to a quantitative sealing device for enameled wire in stepper motor stators, belonging to the technical field of motor stator processing equipment. It includes an enameled wire storage rack, a sealing and coating platform, and a winding machine spindle. Enameled wire is wound and connected on the enameled wire storage rack, which is fixedly installed at the bottom of the sealing and coating platform. Guide wheels are installed on the side of the sealing and coating platform. A tensioning component is fixedly installed at the front end of the platform, a sealing and coating component is installed in the middle, a quantitative cleaning component is installed at the middle and rear ends, and a traction component is fixedly installed at the rear end. In this invention, by sequentially integrating the tensioning component, sealing and coating component, and quantitative cleaning component on the sealing and coating platform, online continuous sealing operation is achieved. After sealing, excess adhesive is directly scraped off the surface of the enameled wire by the quantitative cleaning component, precisely controlling the adhesive layer thickness and achieving quantitative sealing. This effectively improves the uniformity and consistency of the adhesive layer on the enameled wire, ensuring stable insulation performance of the stator after sealing.

Description

Technical Field

[0001] This invention relates to the technical field of motor stator processing equipment, and in particular to a quantitative sealing device for enameled wire of stepper motor stator. Background Technology

[0002] Stepper motors are becoming increasingly popular and their applications are expanding, finding widespread use across various industries. With varying usage scenarios, higher requirements are being placed on certain applications. For example, medical equipment requires strict noise control for stepper motors; during the production of stepper motor stators, the enameled wire wound around the stator core needs to be sealed with adhesive to improve the insulation, moisture resistance, and structural stability of the wire, ensuring the electrical performance and lifespan of the stator.

[0003] In existing technologies, the sealing of enameled wires is mostly done offline by dipping: the enameled wire is first wound into stator windings, and then the entire winding is immersed in adhesive to complete the coating. This method is cumbersome, has low production efficiency, and the thickness of the adhesive layer after dipping is difficult to control. Excess adhesive on the surface can easily cause uneven adhesive layer thickness, affecting the assembly accuracy and insulation consistency of the stator.

[0004] To address the shortcomings of existing technologies, this invention provides a quantitative sealing device for enameled wire of a stepper motor stator, which solves the technical problems of existing enameled wire sealing devices, such as the inability to quantitatively control the thickness of the adhesive layer, poor wire tension stability, ineffective recovery of excess adhesive, and insufficient production continuity. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. The purpose of the present invention is to provide a quantitative sealing device for the enameled wire of a stepper motor stator to solve the problems mentioned in the background art.

[0006] To address the aforementioned problems, this invention provides a quantitative sealing device for enameled wire in a stepper motor stator, comprising an enameled wire storage rack, a sealing coating platform, and a winding machine spindle. Enameled wire is wound and connected on the enameled wire storage rack, which is fixedly installed at the bottom of the sealing coating platform. Guide wheels are mounted on the side of the sealing coating platform. A tensioning component is fixedly installed at the front end of the sealing coating platform, a sealing coating component is installed in the middle, a quantitative cleaning component is installed at the middle and rear ends, and a traction component is fixedly installed at the rear end. After being output from the enameled wire storage rack, the enameled wire passes sequentially through the tensioning component, the sealing coating component, the quantitative cleaning component, and the traction component after being redirected by the guide wheels. The sealing coating component is used to apply adhesive to the surface of the enameled wire, and the quantitative cleaning component is used to scrape off excess adhesive from the surface of the enameled wire to control the adhesive layer thickness. The traction component includes a traction wheel, which corresponds to the position of the winding machine spindle and is used to transport the quantitatively coated enameled wire to the winding machine spindle.

[0007] Furthermore, a fixed roller with a vertically arranged axis is vertically fixed on the enameled wire storage rack, and the enameled wire is evenly wound around the outer circumference of the fixed roller.

[0008] Furthermore, the guide wheel is located between the enameled wire storage rack and the tensioning assembly, and is situated above the wire outlet side of the enameled wire storage rack, for converting the vertically output enameled wire from the enameled wire storage rack into a horizontally transported wire to the tensioning assembly.

[0009] Furthermore, the tensioning assembly includes a tensioning frame, a fixed pulley fixedly installed at the front end of the tensioning frame, and two movable pulleys arranged vertically at the rear end of the tensioning frame. The bottom of the tensioning frame is fixedly connected to the sealing coating platform by bolts. Both the fixed pulley and the movable pulley are rotatably mounted on the tensioning frame via bearings. The tensioning frame has vertical grooves on both sides of the movable pulleys. The axles of the movable pulleys are provided with positioning pins at both ends. The positioning pins pass through the grooves on the corresponding sides and can be adjusted up and down along the grooves. The positioning pins are provided with locking parts to fix the movable pulleys in the set positions of the grooves. The enameled wire is wound around the fixed pulley and the two movable pulleys in sequence. The tension of the enameled wire is adjusted by adjusting the position of the movable pulleys.

[0010] Furthermore, the sealing coating assembly includes a glue storage box, a lid, and a clamping roller; the sealing coating platform has an inner groove adapted to the glue storage box, and the glue storage box is embedded and installed on the sealing coating platform through the inner groove, with glue filling the interior of the glue storage box; the lid is hinged to the top side of the glue storage box via a hinge, and magnetic rings are fixedly installed at both ends of the inner edge of the lid, the magnetic rings being used to magnetically adhere to the metal opening of the glue storage box to achieve lid closure and positioning; the clamping roller is rotatably installed at the center position of the glue storage box, with the lower part of the clamping roller immersed below the glue surface, and the enameled wire passes under the clamping roller, with the glue being coated onto the surface of the enameled wire by the clamping roller.

[0011] Furthermore, the quantitative cleaning component includes a waste liquid recovery tank, a tank cover, and a filter brush; the waste liquid recovery tank is embedded and fixed on the sealing coating platform, and the tank cover is hinged to the top side of the waste liquid recovery tank via a hinge; the filter brush is arranged along the wire routing direction on the inner wall of the waste liquid recovery tank, and the bristles of the filter brush face the surface of the enameled wire and elastically abut against the surface of the enameled wire, for uniformly scraping off excess adhesive from the surface of the enameled wire, and the scraped-off excess adhesive drips into the waste liquid recovery tank for collection.

[0012] Furthermore, the traction assembly also includes a traction mounting frame, a traction drive motor, and a driven pressure roller; the traction mounting frame is vertically fixed to the rear end of the sealing coating platform, the traction wheel is rotatably mounted on the traction mounting frame and is connected to the output end of the traction drive motor; the driven pressure roller is rotatably mounted on the traction mounting frame and elastically pressed against the wheel surface of the traction wheel, the enameled wire is clamped between the traction wheel and the driven pressure roller, and the rotation of the traction wheel drives the enameled wire to travel at a uniform speed.

[0013] Furthermore, the bottom of the waste liquid recovery tank is provided with a drain port, which is connected to a recovery pipeline for discharging and recovering the residual glue waste liquid that has been cleaned up.

[0014] Furthermore, the sealing and coating platform is provided with guide ceramic eyes between the tensioning component and the sealing and coating component, between the sealing and coating component and the quantitative cleaning component, and between the quantitative cleaning component and the traction component. Each guide ceramic eye is arranged coaxially along the enameled wire routing direction to limit the routing path of the enameled wire and ensure the coaxiality of the routing.

[0015] Furthermore, the glue storage box is equipped with a liquid level sensor, which is connected to an external alarm unit. When the glue level is lower than a set threshold, a glue replenishment reminder is triggered.

[0016] This invention offers the following advantages: By sequentially integrating a tensioning component, a sealing and coating component, and a quantitative cleaning component on a sealing and coating platform, online continuous coating operations are achieved; after coating, excess adhesive on the enameled wire is directly scraped off by the quantitative cleaning component, precisely controlling the adhesive layer thickness and achieving quantitative sealing. This effectively improves the uniformity and consistency of the adhesive layer on the enameled wire, ensuring stable insulation performance of the stator after sealing, while preventing residual adhesive from being carried into subsequent processes and causing equipment contamination; the tensioning component adopts a structure with a fixed pulley and an adjustable movable pulley. The size of the wrap angle can be changed by the movable pulley moving up and down along the slide groove, allowing for flexible adjustment. The tension of the enameled wire can be adjusted flexibly; multiple sets of coaxially arranged guide ceramic eyes limit the wire path, effectively avoiding problems such as loose wire routing and deviation, ensuring the stability of the enameled wire position during glue application and scraping, and further improving the stability of sealing quality; the quantitative cleaning component integrates a filter brush and a waste liquid recovery tank, and the scraped excess glue drips directly into the recovery tank for collection, and can be centrally recovered through the bottom drain interface external pipeline, reducing glue waste and lowering equipment cleaning and maintenance costs; at the same time, a liquid level sensor is installed in the glue storage box to monitor the glue level in real time, and trigger a glue replenishment reminder in time when glue is low, ensuring the continuity of production operations. Attached Figure Description

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Figure 1 This is a schematic cross-sectional view of the enameled wire storage rack in this invention;

[0019] Figure 2 This is a schematic diagram of the encapsulation coating assembly in this invention;

[0020] Figure 3 This is a schematic diagram of the tensioning component in this invention;

[0021] Figure 4 This is a schematic diagram of the quantitative cleaning component in this invention;

[0022] Figure 5 This is a schematic diagram of the traction component in this invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Enamelled wire storage rack; 111. Fixed roller; 2. Sealing and coating platform; 201. Inner groove; 211. Guide wheel; 3. Winding machine main shaft; 4. Enamelled wire; 5. Tensioning assembly; 51. Tensioning frame; 510. Slide groove; 52. Fixed pulley; 53. Moving pulley; 531. Positioning pin; 6. Sealing and coating assembly; 61. Glue storage box; 62. Box cover; 621. Magnetic ring; 63. Pressure wheel; 64. Liquid level sensor; 7. Quantitative cleaning assembly; 71. Waste liquid recovery tank; 711. Drainage interface; 72. Tank cover; 73. Filter brush; 8. Traction assembly; 81. Traction wheel; 82. Traction mounting frame; 83. Traction drive motor; 84. Driven pressure wheel; 9. Guide ceramic eye. Detailed Implementation

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0025] like Figures 1 to 5 In one embodiment of the stepper motor stator enameled wire quantitative sealing device of the present invention, the stepper motor stator enameled wire quantitative sealing device of this embodiment includes an enameled wire storage rack 1, a sealing coating platform 2, and a winding machine spindle 3;

[0026] The enameled wire storage rack 1 is fixedly installed below the bottom of the sealing and coating platform 2. A fixed roller 111 is vertically arranged on the enameled wire storage rack 1 with its axis perpendicular to the fixed axis. The enameled wire 4 is spirally and evenly wound around the outer circumference of the fixed roller 111 to form a continuously unwound wire coil. A guide wheel 211 is rotatably installed on the side of the sealing and coating platform 2, directly above the fixed roller 111. The groove of the guide wheel 211 is adapted to the diameter of the enameled wire 4. After the enameled wire 4 is output upward from the fixed roller 111, it is wrapped in the groove of the guide wheel 211. The guide wheel 211 changes the direction of the vertically output enameled wire 4 to a horizontal path and smoothly conveys it to the tensioning assembly 5 on the top surface of the sealing and coating platform 2.

[0027] The top surface of the sealing and coating platform 2 is arranged sequentially along the wiring direction as follows: a tensioning component 5 at the front end, a sealing and coating component 6 in the middle, a quantitative cleaning component 7 at the middle and rear ends, and a traction component 8 at the rear end. At the same time, guide ceramic eyes 9 are installed between the tensioning component 5 and the sealing and coating component 6, between the sealing and coating component 6 and the quantitative cleaning component 7, and between the quantitative cleaning component 7 and the traction component 8. The center holes of all guide ceramic eyes 9 are arranged coaxially along the wiring direction, and the enameled wire 4 is sequentially passed through the center holes of each guide ceramic eye 9. The hard and smooth inner hole of the guide ceramic eye 9 limits the wiring path of the enameled wire 4, avoids left and right offset of the wiring, and ensures the coaxiality of the wiring at each process position.

[0028] The tensioning assembly 5 includes a tensioning frame 51, a fixed pulley 52, and two movable pulleys 53. The tensioning frame 51 is a vertical double-sided plate frame structure, and its bottom is fixedly connected to the top surface of the sealing coating platform 2 by locking bolts. The fixed pulley 52 is rotatably mounted on the upper front end of the tensioning frame 51 via axles and bearings. The two movable pulleys 53 are arranged vertically at intervals at the rear end of the tensioning frame 51, and are rotatably connected via axles and bearings. The two side plates of the tensioning frame 51 have through grooves 510 vertically corresponding to the installation positions of the movable pulleys 53. The two ends of the axles of the movable pulleys 53 extend outward to form positioning pins 531. The positioning pins 531 on both sides are inserted into the corresponding grooves 510, so that the movable pulleys 53 can slide up and down along the grooves 510 to adjust their positions. The outer ends of the positioning pins 531 are provided with locking nuts as locking elements. After adjusting the height of the movable pulleys 53, tightening the locking nuts will fix the movable pulleys 53 in the set positions of the grooves 510.

[0029] During operation, the enameled wire 4 is output from the guide wheel 211 and enters the tensioning assembly 5. It passes through the upper part of the fixed pulley 52, the lower part of the lower movable pulley 53, and the upper part of the upper movable pulley 53 in sequence before being output. By adjusting the position of the two movable pulleys 53, the wrap angle and travel distance of the enameled wire 4 on the pulleys can be changed, thereby adjusting the tension of the enameled wire 4 to adapt to the tension requirements of different wire diameters and different conveying speeds, ensuring that the wire is in a stable tension state throughout the entire travel.

[0030] The sealing coating assembly 6 includes a glue storage box 61, a box cover 62, and a pressure wheel 63. The sealing coating platform 2 has a downwardly recessed groove 201 at its middle end. The size of the groove 201 is adapted to the shape of the glue storage box 61. The glue storage box 61 is embedded in the groove 201 from top to bottom, achieving detachable fixation, which facilitates disassembly, glue application, cleaning, and maintenance. The glue storage box 61 is a rectangular box structure with an open top, which contains insulating sealing glue. One side of the box cover 62 is hinged to one side edge of the top of the glue storage box 61. The box cover 62 can be flipped open and closed around the hinge. Magnetic rings 621 are fixedly embedded at both ends of the inner edge of the box cover 62. The edge of the box opening of the glue storage box 61 is made of metal. When the box cover 62 is closed, the magnetic rings 621 are magnetically attracted to the box opening, achieving the closed positioning of the box cover 62 and reducing glue evaporation and foreign matter falling into the glue.

[0031] The clamping roller 63 is mounted at the center of the inner cavity of the glue storage box 61 via a roller axle. The lower part of the clamping roller 63 is immersed below the glue liquid surface, while the upper part of the roller is above the glue liquid surface. After the enameled wire 4 enters the sealing and coating assembly 6 through the front guide ceramic eye 9, it passes around the bottom groove of the clamping roller 63. The clamping roller 63 rotates synchronously with the conveying of the enameled wire 4, and the glue adhering to the roller surface is evenly coated on the outer peripheral surface of the enameled wire 4, completing the glue coating operation.

[0032] A liquid level sensor 64 is fixedly installed on the lower inner wall of the glue storage box 61. The liquid level sensor 64 is connected to the alarm unit of the equipment through a line, which can monitor the glue level in the glue storage box 61 in real time. The liquid level sensor is set at a height of 40mm from the bottom of the box on the inner wall of the glue storage box. When the glue level is lower than this height, an alarm is triggered. The glue volume corresponding to this threshold is about 20% of the volume of the glue storage box, which can ensure continuous glue application for 20 minutes. The alarm unit includes an audible and visual alarm, which emits an audible and visual reminder when the liquid level is lower than the set threshold.

[0033] The quantitative cleaning component 7 includes a waste liquid recovery tank 71, a tank cover 72, and a filter brush 73; the middle and rear ends of the sealing coating platform 2 are provided with corresponding installation slots, and the waste liquid recovery tank 71 is embedded and fixed in the installation slots. The waste liquid recovery tank 71 is a tank structure with an open top; one side of the tank cover 72 is hinged to one side edge of the top of the waste liquid recovery tank 71 by a hinge, and can be flipped open and closed for daily protection and maintenance cleaning.

[0034] At least two sets of filter brushes 73 are arranged and fixed on the inner wall of the waste liquid recovery tank 71 along the routing direction of the enameled wire 4. The bristles of each set of filter brushes 73 extend towards the surface of the enameled wire 4, and the ends of the bristles elastically abut against the outer peripheral surface of the enameled wire 4. After the enameled wire 4 is coated with glue, it enters the quantitative cleaning component 7 and passes through the filter brushes 73 in sequence. The bristles evenly scrape off the excess glue on the surface of the enameled wire 4, controlling the glue layer thickness within the set range to achieve quantitative sealing. The scraped-off excess glue drips downward under the action of gravity and flows into the bottom of the waste liquid recovery tank 71 for collection.

[0035] The bottom center of the waste liquid recovery tank 71 is provided with a drain port 711. The drain port 711 extends downward to the bottom surface of the sealant coating platform 2 and can be connected to an external recovery pipeline to collect the residual glue waste liquid for centralized discharge and recovery, which facilitates the recycling of glue and equipment cleaning, and reduces consumable costs.

[0036] The traction assembly 8 includes a traction wheel 81, a traction mounting frame 82, a traction drive motor 83, and a driven pressure wheel 84. The traction mounting frame 82 is vertically fixed to the top rear end of the sealing coating platform 2. The traction wheel 81 is rotatably mounted on the lower inner side of the traction mounting frame 82 via a rotating shaft. The traction drive motor 83 is fixedly mounted on the outer side of the traction mounting frame 82, and its output shaft is connected to the rotating shaft of the traction wheel 81 to drive the traction wheel 81 to rotate at a uniform speed. The driven pressure wheel 84 is rotatably mounted on the upper inner side of the traction mounting frame 82 via a rotating shaft, and the mounting seat of the driven pressure wheel 84 has a spring-type elastic pressing structure, so that the driven pressure wheel 84 is elastically pressed against the wheel surface of the traction wheel 81.

[0037] After quantitative cleaning, the enameled wire 4 is output from the rear guide ceramic eye 9 and passes through the clamping gap between the traction wheel 81 and the driven pressure wheel 84. The driven pressure wheel 84 presses the enameled wire 4 firmly onto the wheel surface of the traction wheel 81. The rotational friction of the traction wheel 81 drives the enameled wire 4 forward at a uniform speed, providing stable conveying power for the entire wire. The output side of the traction wheel 81 corresponds to the position of the winding machine main shaft 3. The quantitatively sealed enameled wire 4 is directly conveyed to the winding machine main shaft 3 for stator winding operations.

[0038] In use, the present invention is as follows: the traction drive motor 83 starts, driving the traction wheel 81 to rotate, pulling the enameled wire 4 at a constant speed; the enameled wire 4 is released upward from the fixed roller 111 of the enameled wire storage rack 1, and after being reversed by the guide wheel 211, it enters the tensioning assembly 5 horizontally; within the tensioning assembly 5, it passes around the fixed pulley 52 and the movable pulley 53, and the movable pulley 53 maintains a stable tension force through a preset position, and then it is positioned by the guide ceramic eye 9 and enters the sealing coating assembly 6; within the glue storage box 61, the enameled wire 4 is pulled from the pressure wheel The wire passes under 63, and the glue carried by the wheel is evenly coated on the surface of the enameled wire. After being coated with glue, the enameled wire 4 enters the quantitative cleaning component 7 through the guide ceramic eye 9. Multiple sets of filter brushes 73 scrape off the excess glue on the surface, control the glue layer thickness at the set value, and the scraped-off excess glue is collected in the waste liquid recovery tank 71. After quantitative sealing, the enameled wire 4 enters the traction component 8 through the guide ceramic eye 9, is clamped and conveyed by the traction wheel 81 and the driven pressure wheel 84, and is finally output to the winding machine main shaft 3, completing the entire process of online quantitative sealing.

[0039] In summary, this device, through the coordinated operation of tensioning, gluing, quantitative gluing, and conveying components, achieves continuous online quantitative gluing of enameled wires. The glue layer thickness is uniform and controllable, the wire routing is stable, and excess glue can be recycled, effectively improving the quality and efficiency of stepper motor stator gluing operations.

[0040] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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; and these 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. A quantitative sealing device for enameled wire of a stepper motor stator, comprising an enameled wire storage rack (1), a sealing coating platform (2), and a winding machine spindle (3), characterized in that, Enamelled wire (4) is wound and connected on the enamelled wire storage rack (1). The enamelled wire storage rack (1) is fixedly installed at the bottom of the sealing coating platform (2). Guide wheels (211) are installed on the side of the sealing coating platform (2). A tensioning component (5) is fixedly installed at the front end of the sealing coating platform (2), a sealing coating component (6) is installed at the middle end, a quantitative cleaning component (7) is installed at the middle and rear ends, and a traction component (8) is fixedly installed at the rear end. After the enamelled wire (4) is output from the enamelled wire storage rack (1), it passes through the guide wheels (211) and then through the guide wheels (211). 11) The wire passes through the tensioning assembly (5), the sealing coating assembly (6), the quantitative cleaning assembly (7), and the traction assembly (8) in sequence. The sealing coating assembly (6) is used to apply glue to the surface of the enameled wire (4), and the quantitative cleaning assembly (7) is used to scrape off excess glue from the surface of the enameled wire (4) to control the thickness of the glue layer. The traction assembly (8) includes a traction wheel (81), which is positioned corresponding to the winding machine spindle (3) and is used to transport the enameled wire (4) after quantitative glue application to the winding machine spindle (3).

2. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The enameled wire storage rack (1) is vertically fixed with a fixed roller (111) arranged vertically along its axis, and the enameled wire (4) is evenly wound around the outer periphery of the fixed roller (111).

3. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The guide wheel (211) is located between the enameled wire storage rack (1) and the tensioning assembly (5), and is located above the wire output side of the enameled wire storage rack (1). It is used to change the direction of the enameled wire (4) output vertically from the enameled wire storage rack (1) to be horizontally transported to the tensioning assembly (5).

4. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The tensioning assembly (5) includes a tensioning frame (51), a fixed pulley (52) fixedly installed at the front end of the tensioning frame (51), and two movable pulleys (53) arranged vertically at the rear end of the tensioning frame (51). The bottom of the tensioning frame (51) is fixedly connected to the sealing coating platform (2) by bolts. The fixed pulley (52) and the movable pulleys (53) are rotatably mounted on the tensioning frame (51) by bearings. The tensioning frame (51) has vertical grooves (510) on both sides of the movable pulleys (53). The movable pulley (53) has a positioning pin (531) at both ends of its axle. The positioning pin (531) passes through the corresponding groove (510) and can be adjusted up and down along the groove (510). The positioning pin (531) is equipped with a locking element to fix the movable pulley (53) in the set position of the groove (510). The enameled wire (4) winds around the set pulley (52) and the two movable pulleys (53) in sequence. The tension of the enameled wire is adjusted by adjusting the position of the movable pulley (53).

5. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The sealing coating assembly (6) includes a glue storage box (61), a lid (62), and a pressure wheel (63); the sealing coating platform (2) has an inner groove (201) adapted to the glue storage box (61), the glue storage box (61) is embedded in the sealing coating platform (2) through the inner groove (201), and the inside of the glue storage box (61) is filled with glue; the lid (62) is hinged to the top side of the glue storage box (61) by a hinge, and the lid... (62) Magnetic rings (621) are fixedly installed at both ends of the inner edge. The magnetic rings (621) are used to magnetically attach to the metal box opening of the glue storage box (61) to realize the closing and positioning of the box cover (62). The pressing wheel (63) is rotatably installed at the center position of the glue storage box (61), and the lower part of the pressing wheel (63) is immersed below the glue liquid surface. The enameled wire (4) passes under the pressing wheel (63) and the glue is coated onto the surface of the enameled wire (4) through the pressing wheel (63).

6. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The quantitative cleaning component (7) includes a waste liquid recovery tank (71), a tank cover (72), and a filter brush (73). The waste liquid recovery tank (71) is embedded and fixed on the sealing coating platform (2). The tank cover (72) is hinged to the top side of the waste liquid recovery tank (71) via a hinge. The filter brush (73) is arranged along the wire routing direction of the enameled wire on the inner wall of the waste liquid recovery tank (71), and the bristles of the filter brush (73) face the surface of the enameled wire (4) and elastically abut against the surface of the enameled wire (4) to uniformly scrape off excess glue from the surface of the enameled wire (4). The scraped-off excess glue drips into the waste liquid recovery tank (71) for collection.

7. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, The traction assembly (8) also includes a traction mounting frame (82), a traction drive motor (83), and a driven pressure roller (84); the traction mounting frame (82) is vertically fixed at the rear end of the sealing coating platform (2), the traction wheel (81) is rotatably mounted on the traction mounting frame (82) and is connected to the output end of the traction drive motor (83); the driven pressure roller (84) is rotatably mounted on the traction mounting frame (82) and is elastically pressed against the wheel surface of the traction wheel (81), the enameled wire (4) is clamped between the traction wheel (81) and the driven pressure roller (84), and the enameled wire (4) is driven to run at a uniform speed by the rotation of the traction wheel (81).

8. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 6, characterized in that, The bottom of the waste liquid recovery tank (71) is provided with a drain port (711), which is connected to a recovery pipeline for discharging and recovering the residual glue waste liquid that has been cleaned up.

9. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 1, characterized in that, Guide ceramic eyes (9) are provided on the sealing coating platform (2) between the tensioning component (5) and the sealing coating component (6), between the sealing coating component (6) and the quantitative cleaning component (7), and between the quantitative cleaning component (7) and the traction component (8). Each guide ceramic eye (9) is arranged coaxially along the enameled wire routing direction to limit the routing path of the enameled wire (4) and ensure the coaxiality of the routing.

10. The quantitative sealing device for the enameled wire of the stepper motor stator according to claim 5, characterized in that, The glue storage box (61) is equipped with a liquid level sensor (64), which is connected to an external alarm unit. When the glue level is lower than the set threshold, a glue replenishment reminder is triggered.

Images