Winding and impregnating device

Abstract

The application discloses a kind of winding impregnation devices, comprising: impregnation tank, suitable for glue liquid;Gluing mechanism, including the frame above the impregnation tank, each fiber spreading press roller and glue roller that are rotationally connected on the frame around its own axis, the axis of the fiber spreading press roller and the axis of the glue roller are parallel to each other, and the fiber spreading press roller is located on the travel route of fiber bundle, the lower part of the glue roller is suitable for being immersed in the glue liquid in the impregnation tank, the fiber spreading press roller is suitable for applying pressure to the fiber bundle between the fiber spreading press roller and the glue roller, so that the glue liquid on the glue roller is adhered to the fiber bundle.The winding impregnation device provided by the application can improve the wettability of the glue liquid of the particle-filled epoxy composition to the fiber bundle and the uniform dispersibility of the particle-filled epoxy composition in the fiber bundle by applying pressure to the fiber bundle between the fiber spreading press roller and the glue roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of winding impregnation device, and particularly relates to a winding impregnation device. BACKGROUND

[0002] The winding of the conductor is one of the key structures in the dry-type air-core reactor, and is usually formed by wet winding of the untwisted glass fiber and the liquid epoxy composition.

[0003] The existing impregnation device is an important equipment in the wet winding forming process, and includes the fiber gluing and the glue scraping. However, the traditional equipment is only suitable for the resin system without the powder filler, and cannot realize the good dispersion and impregnation of the high-thermal-conductivity particle filled epoxy composition in the fiber bundle, so that the thermal conductivity of the winding and sealing material is not improved, and even the particle filler is accumulated on the surface of the fiber bundle, which seriously affects the material performance.

[0004] Therefore, it is necessary to design a winding impregnation device. SUMMARY

[0005] Therefore, the present application aims to overcome the defects that the high-thermal-conductivity particle filled epoxy composition cannot be well dispersed and impregnated in the fiber bundle in the impregnation process of the existing impregnation device, so as to provide a winding impregnation device.

[0006] To solve the above technical problems, the technical scheme of the present application is as follows:

[0007] A winding impregnation device comprises:

[0008] An impregnation tank adapted to contain the glue solution;

[0009] A gluing mechanism comprising a rack above the impregnation tank, a fiber spreading pressure roller and a gluing roller each rotationally connected to the rack, the axis of the fiber spreading pressure roller and the axis of the gluing roller being parallel to each other, and the fiber spreading pressure roller being located on the running route of the fiber bundle, the lower part of the gluing roller being adapted to be immersed in the glue solution in the impregnation tank, and the fiber spreading pressure roller being adapted to apply pressure to the fiber bundle between the fiber spreading pressure roller and the gluing roller so that the glue solution on the gluing roller is adhered to the fiber bundle.

[0010] Further, the fiber spreading pressure roller is provided with at least two and is arranged in intervals along the running direction of the fiber bundle.

[0011] Further, the fiber spreading pressure roller is connected to the end of a supporting arm of the frame, and the end of the supporting arm is provided with a rotary pressure regulator adapted to adjust the distance between the fiber spreading pressure roller and the sizing roller to adjust the pressure of the fiber bundle between the fiber spreading pressure roller and the sizing roller.

[0012] Further, the pressure of the fiber bundle between the fiber spreading pressure roller and the sizing roller is continuously adjustable between 0-60N.

[0013] Further, the inlet end and the outlet end of the sizing mechanism are both provided with line pressure rollers, and the two line pressure rollers are adapted to apply downward pressure to the fiber bundle to make the fiber bundle press down on the upper surface of the sizing roller.

[0014] Further, the line pressure rollers are adjustable in position along the sliding track to adjust the distance between the line pressure rollers and the sizing roller.

[0015] Further, a heating device is arranged below the sizing tank and is adapted to keep the temperature of the glue liquid between 25±0.5℃ and 80±0.5℃.

[0016] Further, a stirring device is arranged at the bottom of the sizing tank and is adapted to stir the glue liquid in the sizing tank.

[0017] Further, the outlet end of the sizing mechanism is further provided with a transmission roller and a glue scraping plate in sequence along the running direction of the fiber bundle, and the glue scraping plate is arranged above the sizing tank and is adapted to scrape off the excess glue liquid on the fiber bundle.

[0018] Further, the glue scraping plate has a plurality of scraping knife edges arranged in an up-and-down staggered manner to make the fiber bundle run in a "W" shape between the plurality of glue scraping plates.

[0019] Further, the height of the scraping knife edges of the plurality of glue scraping plates in the vertical direction is adjustable.

[0020] Further, the inlet end and the outlet end of the sizing mechanism are both provided with limiting rollers and limiting grooves, and the limiting groove has a plurality of passages for the fiber bundle to pass through; at the inlet end, the fiber bundle runs to the sizing roller through the passage on the limiting groove after being guided by the limiting roller; at the outlet end, the fiber bundle is guided by the passage on the limiting groove and then sent out by the limiting roller.

[0021] The technical scheme of the present application has the following advantages:

[0022] 1. The winding impregnation device provided by the present application can take the glue liquid in the impregnation tank out of the tank in the form of sticking during the rotation of the glue roller, the fiber spreading roller located on the fiber bundle travel route can apply pressure to the fiber bundle located between the fiber spreading roller and the glue roller to spread the fiber bundle on the surface of the glue roller, and the glue liquid stuck on the glue roller can be uniformly adhered to the surface of the fiber bundle in the form of rolling glue and infiltrate into the fiber bundle under the action of external pressure, so that the particle-filled epoxy composition in the glue liquid can also infiltrate into the fiber bundle and be uniformly distributed in the fiber bundle, and the composite heat conduction effect of the particle-filled epoxy composition and the fiber bundle is greatly improved without causing the decrease of production efficiency.

[0023] 2. The winding impregnation device provided by the present application, the fiber spreading roller is at least two and is arranged at intervals along the travel direction of the fiber bundle, so that the fiber bundle will experience at least two independent spreading processes on the surface of the glue roller during the gluing process, and the wettability of the glue liquid containing the particle-filled epoxy composition to the fiber bundle and the dispersion uniformity of the particle-filled epoxy composition in the fiber bundle can be further improved.

[0024] 3. The winding impregnation device provided by the present application, the fiber spreading roller is connected to the end of a support arm of the support, the end of the support arm is provided with a rotary pressure regulator, the distance between the fiber spreading roller and the glue roller can be adjusted by the rotary pressure regulator, and the pressure applied to the fiber bundle between the fiber spreading roller and the glue roller can be adjusted, so that the pressure value can be appropriately adjusted according to the viscosity of different glue liquids to adjust the spreading degree of the fiber bundle, improve the wettability of the glue liquid containing the particle-filled epoxy composition to the fiber bundle and the dispersion uniformity of the particle-filled epoxy composition in the fiber bundle, and better control the fiber breakage.

[0025] 4. The winding impregnation device provided by the present application, the yarn inlet end and the yarn outlet end of the glue roller are provided with pressure rollers, the pressure rollers can slide to adjust the position along the sliding track to change the distance between the pressure rollers and the glue roller, so that the distance between the pressure rollers and the glue roller can be adjusted according to the wettability of the glue liquid to the fiber bundle during the impregnation process, and then the contact travel of the fiber bundle and the glue roller is adjusted, and correspondingly, the travel length of the glue liquid wetting the fiber bundle can be changed to adapt to different glue liquids. In addition, the fiber bundle can be preliminarily impregnated with lubricity before being extruded by the fiber spreading roller and the glue roller, so as to reduce the breakage rate caused by friction, and the fiber bundle tension can also be adjusted.

[0026] 5. The winding and impregnating device provided by the present application, the scraping knife edges of the plurality of scraping plates are staggered up and down to make the fiber running between the plurality of scraping plates in a "W" shape, which can not only scrape the excess glue on the upper and lower surfaces of the fiber bundle, but also increase the scraping strength compared with the fiber bundle running straight between the scraping plates, and minimize the excess glue.

[0027] 6. The winding and impregnating device provided by the present application, the height of the scraping knife edges of the plurality of scraping plates in the vertical direction is adjustable, so that the fiber glue content and the yarn breakage rate can be reasonably controlled by adjusting the height of the scraping knife edges in the vertical direction. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 is a sectional view of the winding and impregnating device of the present application;

[0030] Figure 2 is a top view of the winding and impregnating device of the present application.

[0031] Explanation of reference signs:

[0032] 1, workbench; 2, impregnating tank; 3, glue applying mechanism; 4, thread pressing roller; 5, scraping plate; 6, control panel; 7, heating device; 8, glue applying roller; 9, fiber spreading and pressing roller; 10, motor-driven rotating rotor; 11, sliding track; 12, limiting roller; 13, limiting groove; 14, transmission roller; 15, supporting arm; 16, rotary pressure regulator. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict between them.

[0037] Embodiment

[0038] Please refer to Figure 1 and Figure 2 It is shown that the present embodiment provides a winding impregnation device, which comprises a workbench 1, an impregnation tank 2 filled with glue, a gluing mechanism 3, two line pressing rollers 4, a plurality of glue scraping plates 5, a control panel 6, two limiting rollers 12, two limiting grooves 13, a stirring device, and a heating device 7. The stirring device and the heating device 7 have their own control units, which can be controlled and parameterized through the control panel 6.

[0039] The transmission of the winding impregnation device in the present embodiment is passive, that is, the take-up roller driven by the motor other than the yarn outlet end pulls the fiber bundle to move to realize rolling gluing and prepare the preformed impregnated fiber. In this way, the cost increase and power consumption caused by the use of motor-driven rollers can be avoided, and the stability of the device is also improved.

[0040] The winding impregnation device in the present embodiment can be used to manufacture dry-type hollow bridge arm reactor, dry-type hollow smoothing reactor and other high-voltage electrical equipment with fiber particle filled type epoxy composition based encapsulation structure.

[0041] The gluing mechanism 3 comprises a frame above the impregnation tank 2, which is fixed on the workbench 1. The gluing mechanism 3 further comprises a fiber spreading pressure roller 9 and a gluing roller 8, which are respectively connected to the frame in a rotation manner around their own axes. The axes of the fiber spreading pressure roller 9 and the gluing roller 8 are parallel to each other, and the fiber spreading pressure roller 9 is located on the running route of the fiber bundle. The lower part of the gluing roller 8 is adapted to be immersed in the glue solution in the impregnation tank 2, and the gluing roller 8 will bring the glue solution in the impregnation tank 2 up during rotation. The fiber spreading pressure roller 9 is adapted to apply pressure to the fiber bundle between the fiber spreading pressure roller 9 and the gluing roller 8 to spread the fiber bundle on the surface of the gluing roller 8. In this way, the glue solution adhered to the gluing roller 8 can be uniformly adhered to the surface of the fiber bundle in a rolling gluing manner and infiltrate into the fiber bundle under external pressure, so that the particle-filled epoxy composition in the glue solution can also infiltrate into the fiber bundle and be uniformly distributed in the fiber bundle, achieving a substantial improvement in the composite thermal conductivity effect of the particle-filled epoxy composition and the fiber bundle, and without causing a decrease in production efficiency. The fiber spreading pressure roller 9 has at least two and is arranged in a spaced manner along the running direction of the fiber bundle. In this embodiment, the fiber spreading pressure roller 9 has two, and specifically, is arranged on the opposite sides of the highest point of the gluing roller 8. In addition, the fiber spreading pressure roller 9 is connected to the end of a support arm 15 of the frame, and the end of the support arm 15 is provided with a rotary pressure regulator 16, which is adapted to adjust the distance between the fiber spreading pressure roller 9 and the gluing roller 8 to adjust the pressure applied to the fiber bundle between the fiber spreading pressure roller 9 and the gluing roller 8, and the pressure applied to the fiber bundle between the fiber spreading pressure roller 9 and the gluing roller 8 is continuously adjustable between 0-60N. The pressure value information of the fiber bundle between the fiber spreading pressure roller 9 and the gluing roller 8 is displayed on the control panel 6, so that the pressure value can be appropriately adjusted according to the viscosity of different glue solutions to adjust the spreading degree of the fiber bundle, improve the wettability of the glue solution containing the particle-filled epoxy composition to the fiber bundle and the dispersion uniformity of the particle-filled epoxy composition in the fiber bundle, and obtain better impregnation effect, while better controlling the fiber breakage.

[0042] Two pressure line rollers 4 are respectively arranged at the yarn feeding end and the yarn discharging end outside the sizing mechanism 3, and the two pressure line rollers 4 are adapted to apply downward pressure to the fiber bundle so as to press the fiber bundle downward across the upper surface of the sizing roller 8. In the embodiment, the shaft center of the pressure line roller 4 and the shaft center of the sizing roller 8 are located on the same horizontal line, and the two pressure line rollers 4 are respectively slidably arranged on a sliding track 11, the guiding direction of the sliding track 11 is horizontal, and the pressure line roller 4 is further provided with a locking member for realizing the locking or unlocking of the position of the pressure line roller 4. Specifically, the locking member is a bolt arranged on both sides of the pressure line roller 4, and the adjustment and locking of the position of the pressure line roller 4 are realized by the tightness of the bolt. During the dipping process, the position of the pressure line roller 4 on the sliding track 11 is adjusted according to the difficulty of the fiber bundle being dipped by the glue solution, so as to adjust the distance between the pressure line roller 4 and the sizing roller 8, and then adjust the contact stroke of the fiber bundle and the sizing roller 8. If the pressure line roller 4 moves towards the sizing roller 8, the contact stroke becomes larger, and the dipping stroke of the glue solution on the fiber becomes longer, which is beneficial to the dipping of the fiber and the dispersion uniformity of the particle-filled epoxy composition with high viscosity in the fiber bundle, so as to achieve better dipping effect. In the embodiment, the adjustable range of the pressure line roller 4 is ±50mm, and in addition, a scale is arranged on the sliding track 11, so as to increase the visibility and accuracy of the adjustment. In addition, the fiber bundle can be preliminarily dipped with certain lubricity before being extruded by the fiber spreading pressure roller 9 and the sizing roller 8, so as to reduce the yarn breakage rate caused by friction, and also has a certain adjusting effect on the tension of the fiber bundle. Of course, the connecting line of the shaft center of the pressure line roller 4 and the shaft center of the sizing roller 8 can be an oblique line, the connecting line of the shaft center of the two pressure line rollers 4 can also be an oblique line, and the guiding direction of the sliding track 11 can also be inclined.

[0043] The heating device 7 is arranged below the dipping tank 2, and in the embodiment, the heating device 7 is an internal circulating water bath type heating device 7 outside the dipping tank 2. The heating temperature is controlled by the control panel 6, and the glue solution temperature is maintained at 25±0.5℃ to 80±0.5℃, so as to effectively control the viscosity of the glue solution.

[0044] The stirring device is arranged at the bottom of the dipping tank 2, and the stirring device is adapted to stir the glue solution in the dipping tank 2. Specifically, the stirring device includes a motor-driven rotating rotor 10, the paddle is a double-layer turbine type (of course, it can also be a single-layer turbine type), and the number is 4-8, and in the embodiment, it is 6. Through the arrangement of the stirring device, the settling speed of the particle type epoxy composition in the glue solution can be reduced. That is, through the internal circulating water bath type heating device 7 and the motor-driven rotating rotor 10, the effective control of the viscosity of the glue solution is realized, and the settling problem of the particle type epoxy composition in the glue solution is solved.

[0045] A plurality of glue scraping plates 5 are arranged at the yarn outlet end of the glue applying mechanism 3, and a transmission roller 14 is arranged between the glue scraping plates 5 and the presser roller 4. The glue scraping plates 5 are arranged above the glue tank 2. In this embodiment, the glue scraping plates 5 are arranged vertically. The glue scraping plates 5 are adapted to scrape off the excess glue liquid on the fiber bundle. The scraping edges of the plurality of glue scraping plates 5 are staggered in the vertical direction so that the fiber bundle forms a "W" shape when passing between the plurality of glue scraping plates 5. The height of the scraping edges of the plurality of glue scraping plates 5 in the vertical direction can be adjusted. The number of glue scraping plates 5 is 5-7, and in this embodiment, the number is 6. The glue scraping plates 5 can be removed according to the need. The chamfer of the scraping edge is R2-R4, and in this embodiment, the chamfer of the scraping edge is R3. The height of each glue scraping plate 5 can be continuously adjusted within a range of ±20 mm by means of bolt connection, so as to change the glue scraping force and achieve reasonable control of the glue content and the yarn breakage rate.

[0046] One limiting roller 12 and one limiting groove 13 form a group, two limiting rollers 12 and two limiting grooves 13 form two groups, and the two groups of limiting rollers 12 and limiting grooves 13 are arranged at the yarn inlet end and the yarn outlet end, respectively. The limiting rollers 12 and limiting grooves 13 in each group are close to each other, and the distance therebetween is 20-30 mm. In addition, the limiting grooves 13 are closer to the glue roller 8 in the horizontal direction than the limiting rollers 12. The fiber bundle passes along the lower surface of the limiting roller 12, and the limiting groove 13 limits the movement of the fiber bundle in the direction perpendicular to the movement direction of the fiber bundle. Generally, 5-8 limiting grooves 13 can be arranged, i.e., 5-8 fiber bundles can be simultaneously dipped in glue.

[0047] The fiber bundle is arranged on the glue roller 8, and the two ends are located below the limiting rollers 12 at the yarn inlet end and the yarn outlet end, respectively. Then, the winding and dipping device in this embodiment is started. The glue roller 8 will be pulled by the fiber bundle and rotate in the direction indicated by the arrow A, so as to dip the fiber bundle in glue. Figure 1From the perspective, the counterclockwise rotation, due to the bottom of the rubber roller 8 is immersed in the glue tank 2, in the process of rotation of the rubber roller 8, will constantly bring the glue tank 2 in the form of "dipping" to the fiber bundle and rubber roller 8 contact travel area, the rubber roller 8 constantly in the process of rotation, the yarn frame 1-8 line density of 2400tex-4800tex no twist glass fiber bundle (of course, also can be other material fiber bundle) in the right side of the yarn end through the limiting roller 12 and limiting groove 13 after again to the right side of the fiber spreading pressure roller 9 and rubber roller 8 between the right side of the fiber spreading pressure roller 9 to the right side of the fiber spreading pressure roller 9 and rubber roller 8 between the fiber bundle exert pressure to make the fiber bundle spread, so as to realize the glue of the particle filled epoxy composition on the fiber bundle spread on the surface of the rubber roller 8, and the particle filled epoxy composition in the glue can be more evenly distributed in the spread of the fiber bundle;

[0048] The fiber bundle is continuously pulled into the left side of the fiber spreading pressure roller 9 and the rubber roller 8 between the left side of the fiber spreading pressure roller 9 and the rubber roller 8 between the fiber bundle again to exert pressure to make the fiber bundle spread on the surface of the rubber roller 8, so as to realize the glue of the particle filled epoxy composition on the fiber bundle spread on the surface of the rubber roller 8, and the particle filled epoxy composition in the glue can be more evenly distributed in the spread of the fiber bundle;

[0049] The fiber bundle is continuously pulled into the left side of the fiber spreading pressure roller 9 and the rubber roller 8 between the left side of the fiber spreading pressure roller 9 and the rubber roller 8 between the fiber bundle again to exert pressure to make the fiber bundle spread on the surface of the rubber roller 8, so as to realize the glue of the particle filled epoxy composition on the fiber bundle spread on the surface of the rubber roller 8, and the particle filled epoxy composition in the glue can be more evenly distributed in the spread of the fiber bundle;

[0050] After the fiber bundle passes through the limiting groove 13 on the passage guide and then is sent out by the limiting roller 12.

[0051] In addition, in the present embodiment, the limiting groove 13 of the yarn end, the limiting roller 12 of the yarn end, the glue scraping plate 5, the transmission roller 14, the fiber spreading pressure roller 9 and the rubber roller 8, the pressure roller 4 are all above the glue tank 2, so that the excess glue can be dropped back to the glue tank 2 for recycling, avoiding the waste of glue.

[0052] Further, all the rollers are made of metal material, and both ends are connected with the workbench 1 through rolling bearings with end sealing structure. Of course, all the rollers can also be made of plastic material, or the form of metal and plastic cooperation, preferably the plastic is fiber reinforced nylon or polytetrafluoroethylene.

[0053] Further, both ends of all the rollers are provided with metal counterweight structure to reduce the required traction of the fiber bundle during operation, reduce the broken filament phenomenon caused by large tension, and avoid the cost increase and power consumption caused by the form of motor driven roller.

[0054] Obviously, the above embodiments are only examples for clearly illustrating, but not limit the embodiments. For those skilled in the art, based on the above description, other different forms of changes or variations can also be made. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A wrapping impregnation device, characterized in that, The application relates to a sizing device for sizing fiber bundles, comprising: a sizing tank (2) adapted to contain sizing liquid; a sizing mechanism (3) comprising a frame located above the sizing tank (2), a fiber spreading pressure roller (9) and a sizing roller (8) each connected to the frame in a rotatable manner about their own axes, the axes of the fiber spreading pressure roller (9) and the sizing roller (8) being parallel to each other, the fiber spreading pressure roller (9) being located on the running path of the fiber bundle, the lower part of the sizing roller (8) being adapted to be immersed in the sizing liquid in the sizing tank (2), the fiber spreading pressure roller (9) being adapted to apply pressure to the fiber bundle between the fiber spreading pressure roller (9) and the sizing roller (8) so that the sizing liquid on the sizing roller (8) adheres to the fiber bundle; the fiber spreading pressure roller (9) is connected to the end of a support arm (15) of the frame, the end of the support arm (15) being provided with a rotary pressure regulator (16) adapted to adjust the distance between the fiber spreading pressure roller (9) and the sizing roller (8) so as to adjust the pressure applied to the fiber bundle between the fiber spreading pressure roller (9) and the sizing roller (8); the pressure applied to the fiber bundle between the fiber spreading pressure roller (9) and the sizing roller (8) is continuously adjustable between 0 and 60 N.

2. The wrapping and impregnating device according to claim 1, characterized in that the fiber spreading pressure roller (9) is provided with at least two rollers, and the rollers are arranged in a spaced manner along the running direction of the fiber bundle.

3. The wrapping and impregnating device according to claim 1, characterized in that the entry end and the exit end of the sizing mechanism (3) are each provided with a pressure roller (4) adapted to apply downward pressure to the fiber bundle so that the fiber bundle is pressed onto the upper surface of the sizing roller (8).

4. The wrapping and impregnating device according to claim 3, characterized in that a sliding track (11) is further provided, and the pressure roller (4) can be adjusted in position along the sliding track (11) so as to adjust the distance between the pressure roller (4) and the sizing roller (8).

5. The wrapping and impregnating device according to any one of claims 1 to 4, characterized in that a heating device (7) is arranged below the sizing tank (2) and adapted to keep the temperature of the sizing liquid between 25+ / -0.5 DEG C and 80+ / -0.5 DEG C.

6. The wrapping and impregnating device according to claim 5, characterized in that a stirring device is arranged at the bottom of the sizing tank (2) and adapted to stir the sizing liquid in the sizing tank (2).

7. The wrapping and impregnating device according to claim 1, characterized in that a driving roller (14) and a sizing plate (5) are further arranged in sequence at the exit end of the sizing mechanism (3) along the running direction of the fiber bundle, the sizing plate (5) is located above the sizing tank (2), and the sizing plate (5) is adapted to remove the excess sizing liquid on the fiber bundle.

8. The wrapping and impregnating device according to claim 7, characterized in that the sizing plate (5) has a plurality of sizing blades, and the sizing blades of the plurality of sizing plates (5) are arranged in an up-and-down staggered manner, so that the running direction of the fiber bundle between the plurality of sizing plates (5) is in a "W" shape.

9. The wrapping and impregnating device according to claim 8, characterized in that the height of the sizing blades of the plurality of sizing plates (5) in the vertical direction is adjustable.

10. The wrapping and impregnating device according to claim 1, characterized in that, The yarn feeding end and the yarn discharging end of the sizing mechanism (3) are respectively provided with a limiting roller (12) and a limiting groove (13), the limiting groove (13) has a plurality of passages for the fiber bundle to pass through; at the yarn feeding end, the fiber bundle is guided by the limiting roller (12) and then passes through the passages on the limiting groove (13) to reach the sizing roller (8); at the yarn discharging end, the fiber bundle is guided by the passages on the limiting groove (13) and then discharged outward by the limiting roller (12).

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