A glass fiber winding device and a constant speed winding method

Abstract

The application discloses a glass fiber winding device and a constant-speed winding method in the technical field of filament material conveying, and aims to solve the problem that the existing technology is complex and difficult to control stably by detecting the tension of glass fiber to change the winding speed. It comprises a machine table, the two sides of the machine table are respectively provided with a first mounting frame and a second mounting frame, a winding device is rotatably arranged on the first mounting frame, a first driving device for driving the winding device to rotate is further arranged on the first mounting frame, two clamping rollers with mutually flush surfaces are rotatably arranged on the second mounting frame, a second driving device for driving one of the clamping rollers to rotate is further arranged on the second mounting frame, and a line pressing assembly is further arranged on the machine table. The application is used for stable take-up in the glass fiber winding process, can realize stable provision of yarn drawing force and speed in the glass fiber winding process without adopting a complex tension detection feedback system, so as to ensure the upstream wire drawing preparation effect to be stable, and further ensure the finished product quality.

Description

Technical Field

[0001] This invention relates to a glass fiber winding device and a uniform speed winding method, belonging to the field of filament material handling technology. Background Technology

[0002] During the winding process of glass fiber material, the downstream end continues to prepare glass fiber to continuously supply the product to the roll. However, as the roll continues to wind, the diameter of the winding surface on the outer surface of the roll gradually increases. Therefore, even if the rotation speed of the roll is kept constant, the actual winding linear speed will gradually increase during winding. When the wire is thin and the diameter of the take-up roll varies greatly, the change in linear speed is very subtle, and in the end, the winding speed may even change by a factor of two. This change in linear speed can easily lead to insufficient cooling, sticking, and uneven coating (lubricant, film-forming agent, etc.) in the upstream fiber drawing process. In cases of material disturbances, the filament arrangement and tension can become disordered, ultimately leading to frequent filament breakage (flying filament) and poor roll forming, resulting in low product yield. Therefore, how to maintain stable film formation of the sizing agent during glass fiber drawing under high-frequency, short-cycle speed disturbances has become an urgent technical problem to be solved. In order to balance the linear speed and tension of the drawing process, a relatively complex tension detection system is usually designed to adjust the winding linear speed through negative feedback. However, this method not only has a complex detection structure configuration, but also requires frequent changes to the speed control signal, which not only has high design costs, but is also prone to control errors, affecting normal production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a glass fiber winding device and a uniform speed winding method for stable take-up during the glass fiber winding process. It can stably provide drawing force and speed during the glass fiber winding process without the need for a complex tension detection and feedback system, thereby ensuring the stability of the upstream drawing preparation effect and thus guaranteeing the quality of the finished product.

[0004] To achieve the above objectives, the present invention employs the following technical solution: The present invention provides a fiberglass winding device, comprising a machine base, with a first mounting frame and a second mounting frame respectively arranged on both sides of the machine base. A winder is rotatably mounted on the first mounting frame, and a first driving device for driving the winder to rotate is also provided on the first mounting frame. Two clamping rollers with their surfaces aligned are rotatably mounted on the second mounting frame, and a second driving device for driving one of the clamping rollers to rotate is also provided on the second mounting frame. A wire pressing assembly is also provided on the machine base. The wire pressing assembly includes a positioning bracket, with a vertically oriented sliding groove on the positioning bracket. A U-shaped sliding piece is slidably arranged in the sliding groove, and a counterweight pulley is rotatably mounted on the U-shaped sliding piece. Multiple photoelectric sensors are also arranged vertically on the positioning bracket for detecting the height position of the counterweight pulley.

[0005] Specifically, the machine platform is provided with several sets of fixed pulleys that are paired with each other. A third driving device is provided between each pair of adjacent fixed pulleys in each set. A movable pulley is fixedly provided at the movable end of the third driving device. The third driving device is used to drive the movable pulley to move closer to or away from the position of the corresponding set of fixed pulleys.

[0006] Specifically, a take-up deflection assembly is provided on the machine platform at the upstream end of the winder and the downstream end of the fixed pulley. The take-up deflection assembly includes a linear motion module and an adjusting pulley fixedly installed at the movable end of the linear motion module. The linear motion module is used to drive the adjusting pulley to reciprocate in the axial direction of the winder.

[0007] Specifically, a defect detection component is provided on the machine platform, located upstream of the adjusting pulley and downstream of the fixed pulley. The defect detection component includes a bottom light source fixedly installed on the machine platform. A mask for creating a darkroom environment is provided on the bottom light source. Cable bundlers are provided on both sides of the bottom light source and the mask. The cable bundlers are provided with guide holes for glass fiber to pass through. A camera with a lens portion and the bottom light source is provided on the mask.

[0008] Specifically, both sides of the second mounting frame are provided with slide rails arranged in the vertical direction, and sliders are slidably arranged on both slide rails. One of the clamping rollers, which is not connected to the second drive device, is rotatably arranged on the two opposing sliders. Adjustment plates are provided on the second mounting frame and on the upper and lower sides of each slider. Each adjustment plate is threaded with an adjustment bolt for adjusting the position of the slider.

[0009] Specifically, a coating roller is rotatably mounted on the second mounting frame. The coating roller includes a rolling part that directly contacts the surface of the lower clamping roller. The surface of the rolling part is provided with a groove, and an annular sponge layer with a surface protruding from the surface of the rolling part is provided in the groove. The annular sponge layer is used to coat the glass fiber with a wetting agent at the position located on the surface of the lower clamping roller.

[0010] Specifically, the second mounting frame is equipped with a sizing agent supply device, which is used to drip sizing agent onto the position of the annular sponge. A recovery tank is provided on the second mounting frame and below the coating roller, and a circulation pipe is provided below the recovery tank to connect to the sizing agent supply device.

[0011] Specifically, a guide wire is rotatably mounted on the second mounting frame and located upstream of the clamping roller. The second mounting frame is provided with an arc groove. One end of the guide wire is equipped with a connecting shaft that can move within the arc groove. A locking nut is threaded onto the connecting shaft.

[0012] On the other hand, the present invention provides a glass fiber uniform speed winding method, which uses the above-mentioned glass fiber winding device, and the method includes: The glass fiber filaments are held by opposing clamping rollers and conveyed downstream; The winder rotates to wind the glass fiber filaments located downstream of the clamping roller onto the surface of the winder. The height position of the counterweight pulley is detected in real time. When the counterweight pulley is lower than the preset safe position height, the rotation speed of the winder is increased until the counterweight pulley is at the safe position height. When the counterweight pulley is higher than the preset safe position height, the rotation speed of the winder is decreased until the counterweight pulley is at the safe position height.

[0013] Specifically, when the height of the counterweight pulley is not within the preset safe position range, and before changing the rotational speed of the winding machine, the adjustment method of the counterweight pulley is changed by judging whether the height position of the movable pulley is at the limit position: When the actual height of the counterweight pulley is lower than the preset safe height: ① If the movable pulley is at its lowest position, increase the speed of the winder until the counterweight pulley is within the safe height range. At the same time, slowly increase the height of the movable pulley, keeping the counterweight pulley within the safe height range, until the movable pulley is raised to the middle position of the range of motion. ②If the movable pulley is not in the lowest position, the third drive device drives the movable pulley to slowly descend until the height of the counterweight pulley is raised to a safe position. When the actual height of the counterweight pulley is higher than the preset safe height: ③ If the movable pulley is at its highest position, reduce the speed of the winder until the counterweight pulley is within the safe height range. At the same time, slowly lower the height of the movable pulley, keeping the counterweight pulley within the safe height range, until the movable pulley is lowered to the middle position of its range of motion. ④ If the movable pulley is not in the highest position, the third drive device drives the movable pulley to rise slowly until the height of the counterweight pulley is raised to a safe position.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: This invention sets up opposing clamping rollers at the front end of the traditional fiber winding process, thereby using the rotation of the clamping rollers to provide a stable drawing force for the clamped filaments, and realizes the automatic winding process at the rear end. In this method, since the rotation speed of the clamping rollers is constant and the outer surface diameter does not increase due to the winding of glass fiber, uniform drawing can be carried out at the rated rotation speed and tension, which helps to ensure the stable preparation of glass fiber in the upstream process, thereby reducing the flying filament phenomenon caused by uneven process and helping to control product quality. This device provides an additional means to reduce the frequency of speed control requirements. By using the coordinated movement of multiple sets of movable pulleys to balance the position of the counterweight pulley, the movable pulleys can be moved to maintain the normal tension of the fiberglass thread when the linear speed on the surface of the winder changes due to winding problems. This avoids repeated adjustments to the motor speed due to the high-frequency position changes of the counterweight pulley, resulting in a lower motor control frequency. This helps to ensure the stability of the winding system and avoids unstable control phenomena caused by sudden increases or decreases in speed requirements. This device uses a supplementary lighting camera structure to detect defects in the fiberglass. It can also adjust the pressure of the two clamping rollers according to the degree of defects, thereby determining the most suitable conveying pressure or adjusting the surface material of the clamping rollers. This helps to further reduce the probability of defects such as fiberglass shavings and ensure product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the glass fiber winding device provided in an embodiment of the present invention; Figure 2 This is the present invention. Figure 1 Enlarged view of section A of the fiberglass winding device provided in the embodiment; Figure 3 This is the present invention. Figure 1 Enlarged view of section B of the fiberglass winding device provided in the embodiment; Figure 4 This is the present invention. Figure 1 Enlarged view of the structure at point C of the glass fiber winding device provided in the embodiment; Figure 5 This is the present invention. Figure 1 Enlarged view of the structure at point D of the glass fiber winding device provided in the embodiment; Figure 6 This is a front view of the glass fiber winding device provided in an embodiment of the present invention; Figure 7 This is the present invention. Figure 6A cross-sectional view of the glass fiber winding device provided in the embodiment along the EE direction; Figure 8 This is the present invention. Figure 7 Enlarged view of the structure at point F of the glass fiber winding device provided in the embodiment; Figure 9 This is a side view of the glass fiber winding device provided in an embodiment of the present invention; Figure 10 This is the present invention. Figure 9 A cross-sectional view of the glass fiber winding device provided in the embodiment in the GG direction; Figure 11 This is the present invention. Figure 10 Enlarged view of the structure at point H of the glass fiber winding device provided in the embodiment; Figure 12 This is the present invention. Figure 10 Enlarged view of section I of the fiberglass winding device provided in the embodiment; Figure 13 This is the present invention. Figure 10 Enlarged view of the structure at point J of the fiberglass winding device provided in the embodiment; Figure 14 This is the present invention. Figure 10 Enlarged view of the structure at point K of the glass fiber winding device provided in the embodiment; Reference numerals: 1. Machine base; 2. First mounting frame; 3. Winder; 4. First drive unit; 5. Second mounting frame; 6. Clamping roller; 7. Second drive unit; 8. Positioning bracket; 9. U-shaped slide plate; 10. Counterweight pulley; 11. Photoelectric sensor; 12. Fixed pulley; 13. Third drive unit; 14. Moving pulley; 15. Adjusting pulley; 16. Linear movement module; 17. Bottom surface light source; 18. Mask; 19. Wire bundler; 20. Coating roller; 2001. Rolling part; 2002. Annular sponge layer; 21. Slide rail; 22. Slider; 23. Adjusting plate; 24. Adjusting bolt; 25. Wire guide; 26. Arc groove; 27. Locking nut; 28. Wetting agent supply device; 29. ​​Recovery tank. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1:

[0019] This invention provides a fiberglass winding device for stable fiber winding. It eliminates the need for a complex tension detection and feedback system, enabling stable drawing force and speed during fiber winding, thus ensuring stable upstream fiber drawing and production quality. To achieve the device's structural functions, it includes a machine base 1. Specifically, a first mounting frame 2 and a second mounting frame 5 are respectively provided on both sides of the machine base 1. A winder 3 is rotatably mounted on the first mounting frame 2, and a first driving device 4 for driving the winder 3 to rotate is also provided on the first mounting frame 2. The winder 3 can be a drum-type conveyor or a rotating rod type (see reference). Figure 1As shown, to avoid excessive lateral offset of the glass fiber, multiple grooves can be provided at the end of the rotating rod. By constraining the glass fiber within these grooves, the lateral take-up distance is shortened, thus avoiding excessive variation in linear speed. To make the upstream glass fiber drawing process more stable, two clamping rollers 6 with their surfaces aligned can be rotatably mounted on the second mounting frame 5. A second driving device 7 for driving one of the clamping rollers 6 to rotate is also provided on the second mounting frame 5. Both the second driving device 7 and the first driving device 4 can be driven by motors to rotate the corresponding structural components. When the motor drives one clamping roller 6 to rotate, the other clamping roller 6 can rotate at the same surface linear speed through the friction generated by the pressure. At this time, by feeding the glass fiber between the two clamping rollers 6, the clamping pressure and friction can be used to drive the glass fiber to move. The drawing speed is no longer affected by the surface diameter of the winder 3, and can continuously supply the winder 3 with constant tension and speed, ultimately achieving the winding of the fiberglass thread by the winder 3. In this method, stable drawing speed and other conditions can be provided for the preparation of upstream fiberglass filaments, thereby effectively ensuring the quality of upstream fiberglass filament products. However, an additional problem of winding speed mismatch arises between the winder 3 and the clamping roller 6. If the downstream fiberglass of the winder 3 and the clamping roller 6 are directly connected, a speed mismatch in the winder 3 may lead to fiberglass breakage or warping during winding. Therefore, under normal circumstances, the winder 3 still needs to match the rotation speed to ensure that the fiberglass thread is taut and wound. However, if the linear speed of the winder 3 is repeatedly adjusted, the purpose of the clamping roller 6 is lost. Therefore, as a further feature of this embodiment, a wire pressing assembly is also provided on the machine 1, referring to... Figure 8 , Figure 10 and Figure 14As shown, specifically, the wire pressing assembly here includes a positioning bracket 8. A vertically oriented groove is provided on the positioning bracket 8, and a U-shaped slide plate 9 is slidably arranged in the groove. At this time, a counterweight pulley 10 is rotated on the U-shaped slide plate 9 so that the fiberglass wire can reconnect with the winder 3 through the counterweight pulley 10. At the same time, multiple photoelectric sensors 11 are also arranged vertically on the positioning bracket 8 to detect the height position of the counterweight pulley 10. With this configuration, when the winder 3 rotates at the rated speed, a slight mismatch in linear speed will be reflected as a change in the height of the counterweight pulley 10. By monitoring the height of the counterweight pulley 10 through the photoelectric sensors 11, if it is within the safe height range, there is no need to adjust the speed of the winder 3. Adjustment is only required when the position of the counterweight pulley 10 is abnormal. This method effectively reduces the speed control frequency required by the winder 3 and provides excellent control over the fiberglass conveying speed and tension, resulting in a more stable winding effect. Compared to a negative feedback system for detecting and judging fiberglass tension, its configuration is simpler and more conducive to intuitive judgment and operation. In the above embodiments, it is important to note that the combination of the U-shaped slide 9 and the counterweight pulley 10 should always generate a gravity or pressure lower than the maximum load-bearing capacity of the fiberglass during vertical movement to avoid damage to the fiberglass caused by the structure itself. When the clamping rollers 6 convey fiberglass, at least one of the clamping rollers 6 has an elastic layer design on its surface to prevent pressure damage to the fiberglass material caused by the rigid structure, which could lead to other quality problems. As a preferred embodiment, the lower clamping roller 6 can be configured as a rigid roller to provide a stable support surface for the fiberglass, preventing damage to the fiberglass structure due to unstable pressure. At locations where the fiberglass does not pass, grooves can be configured with flexible layers inside to press against the surface of the upper clamping roller 6 (both surfaces are flexible layers), ensuring that the two do not easily slide relative to each other and thus ensuring that their linear velocities are the same.

[0020] The fiberglass winding device provided in this embodiment of the invention, in order to prevent the counterweight pulley 10 from rushing out of the safe position at a high frequency, which would require the first drive device 4 to continuously change its rotation speed at a high frequency, can therefore be provided on the machine base 1 with several sets of fixed pulleys 12 that are paired with each other, as shown in the figure. Figure 10 As shown, a third drive device 13 can be configured between each pair of adjacent fixed pulleys 12, and a movable pulley 14 can be fixedly mounted on the movable end of the third drive device 13. In this configuration, the third drive device 13 is used to drive the movable pulley 14 closer to or further away from the corresponding pair of fixed pulleys 12. Figure 10In this configuration, multiple such structures can be installed downstream of the clamping roller 6 and upstream of the winder 3. After the counterweight pulley 10 moves out of the safe position, the third drive device 13 (such as a vertically positioned cylinder assembly) can be used to drive the movable pulley 14 to move up and down accordingly. This allows the counterweight pulley 10 to remain at a safe height without changing the speed of the winder 3. When all the movable pulleys 14 have moved to their limit positions and still cannot prevent the counterweight pulley 10 from moving out of the safe height, the speed of the winder 3 can be adjusted. During the adjustment process, the positions of these movable pulleys 14 are reset. This allows the movement margin of the movable pulleys 14 to be replenished during a single adjustment, thereby effectively extending the time required for the next speed adjustment and greatly increasing the adjustment frequency of the winder 3's speed. This helps to ensure system stability and reduce the speed control error rate. Furthermore, through the above configuration, the counterweight pulley 10 can be regarded as a small buffer for high-speed response, and the multiple sets of movable pulleys 14 can be regarded as a large buffer for low-speed response. This allows sufficient buffer space and response time to wait for the rewinding when the winder 3 needs to be replaced when it is full. At this time, the length of the stored fiber corresponding to the range of motion of the movable pulley 14 should be greater than or equal to the length of the glass fiber continuously conveyed by the clamping roller 6 during the full rewinding of the winder 3. This allows the excess glass fiber to be temporarily stored through the multiple sets of movable pulleys 14 while the fiber is continuously supplied, until the rewinding action is completed. This is conducive to the truly continuous production of the glass fiber drawing process and avoids the situation of temperature fluctuations in the drawing furnace and the generation of waste products caused by frequent start-ups and shutdowns of the equipment. The rewinding action can be carried out manually or automatically. When using an automated rewinding structure, the specific rewinding structure is not further limited here.

[0021] This invention provides a fiberglass winding device. To achieve stable winding of the fiberglass thread and avoid the problem of uneven winding on the sides due to localized thick winding of the fiberglass, a winding deflection component is installed on the machine base 1, located upstream of the winder 3 and downstream of the fixed pulley 12. This component can be configured according to... Figure 3 The winding deflection component is configured to include a linear motion module 16 and an adjusting pulley 15 fixedly mounted on the movable end of the linear motion module 16. In this case, the linear motion module 16 is configured to drive the adjusting pulley 15 to move back and forth along the axis of the winder 3.

[0022] This invention provides a fiberglass winding device. To facilitate the assessment of product defects based on actual production conditions and thus allow for adjustments to the configuration of upstream components, a defect detection component is installed on the machine 1, upstream of the adjusting pulley 15 and downstream of the fixed pulley 12. Figure 13As shown, the defect detection assembly includes a bottom light source 17 fixedly mounted on the machine base 1. A mask 18 for creating a darkroom environment is mounted on the bottom light source 17. Wire bundlers 19 are mounted on both sides of the bottom light source 17 and the mask 18, with guide holes for fiberglass to pass through, allowing the fiberglass wires to pass over the bottom light source 17. A camera (not shown) with a lens mounted on the mask 18, positioned opposite the upper part of the bottom light source 17, is used to emphasize the dark filaments generated by the fiberglass, facilitating the camera to capture and form a product inspection image. Sufficient contrast between light and dark layers is used to determine the defect type. In this configuration, the camera can be configured as a high-speed linear scan camera or an area scan camera, and is equipped with a stroboscopic source control synchronized with the camera's exposure sequence. The controller, i.e., the bottom light source 17, is a strobe light source whose flash frequency is synchronized with the frame rate of the camera to freeze the moving glass fiber image. As another preferred embodiment, a lens can also be set at the bottom of the camera to achieve better imaging effect. For example, the concave lens can be used to widen the field of view to increase the length of glass fiber illuminated in a single shot, which means that the shooting frequency can be reduced during the dynamic movement of the glass fiber, thereby reducing the total amount of data. In this embodiment, an interleaved convex lens can also be set on the side of the concave lens near the camera to magnify the refracted glass fiber image. At this time, the convex axis of the convex lens should be parallel to the glass fiber transport direction, while the axis of the concave lens should be parallel to the glass fiber. The matching position and matching angle of the lens are not further limited here.

[0023] This invention provides a fiberglass winding device. To determine the quality of the fiberglass product based on imaging results and adjust the pressure between the two clamping rollers 6 to ensure appropriate pressure on the fiberglass, vertically arranged slide rails 21 can be provided on both sides of the second mounting frame 5. (Refer to...) Figure 4 as well as Figure 6 As shown, sliders 22 can be slidably mounted on both slide rails 21. The clamping roller 6, which is not in an active driving state (i.e., not connected to the second drive device 7), is rotatably mounted on the two opposing sliders 22. Adjusting plates 23 are mounted on the second mounting bracket 5, located on the upper and lower sides of each slider 22, and adjusted according to… Figure 4As shown, each adjusting plate 23 is threaded with an adjusting bolt 24 for adjusting the position of the slider 22. By adjusting the upper and lower adjusting bolts 24, the height position of the clamping roller 6 can be precisely changed, thereby changing the pressure on the glass fiber. This facilitates the control of the clamping state of the glass fiber and achieves feedback adjustment of the glass fiber state, avoiding defects such as fly filaments caused by pressure loss. In some other embodiments, the slider 22 can be additionally configured to be driven only by a corresponding push rod (such as a hydraulic push rod). By combining the above-mentioned camera to judge the generation of fly filaments, the pressure or pushing force generated by the equipment on the glass fiber during operation can be dynamically controlled, and the optimal applied pressure can be adjusted according to the repeated judgment results to avoid excessive pressure and significant damage to the glass fiber itself.

[0024] This invention provides a fiberglass winding device. To reduce damage to the fiberglass material caused by friction on the surfaces of the pulleys, a coating roller 20 is rotatably mounted on the second mounting frame 5 at a position before the fiberglass material contacts the pulleys. Figure 2The design shown includes a coating roller 20 comprising a rolling portion 2001 that directly contacts the surface of the lower clamping roller 6. The rolling portion 2001 rotates at the same linear velocity as the lower clamping roller 6. A groove (annular ring surrounding the rolling portion 2001) is provided on the surface of the rolling portion 2001, and an annular sponge layer 2002 with a surface protruding from the surface of the rolling portion 2001 is provided within the groove. This allows the annular sponge layer 2002 to make compression contact with the surface of the lower clamping roller 6 during rolling. This contact allows the wetting agent adsorbed by the annular sponge layer 2002 to coat the surface of the glass fiber, thereby protecting the glass fiber and reducing the adverse effects caused by pulley friction after the glass fiber enters the pulley. This further improves the quality of the glass fiber product. The sponge layer 2002 is used to coat the glass fiber with sizing agent on the surface of the lower clamping roller 6. This coating method, which uses extrusion to spread the sizing agent, avoids the problems of high anti-clogging requirements of spray coating and easy fuzzing of sizing coating. The sizing agent is automatically applied during rotation. In this method, the annular sponge layer 2002 is squeezed by the clamping roller 6, which causes the sizing agent it has absorbed to seep out and coat the glass fiber surface. When the extrusion contact ends, the annular sponge layer 2002 rebounds and resets, and draws in sizing agent again from the sizing agent supply device 28, thereby achieving automatic replenishment, effectively controlling the amount of sizing agent used and avoiding additional losses. It should be noted that the coating roller 20 should be set at the surface position (wrap angle range) of the glass fiber covered by the lower clamping roller 6 to avoid generating other twisting forces of the glass fiber that would cause additional frictional losses. Because the annular sponge layer 2002 rebounds rapidly after being removed from the extrusion surface of the clamping roller 6, this rebound can easily cause the sizing agent to be reabsorbed into the capillaries of the sponge layer. As a preferred configuration, a baffle (not shown in the figure) can be additionally installed between the clamping roller 6 and the annular sponge layer 2002. This baffle is used to compress the annular sponge layer 2002 downstream of the contact surface, thereby suppressing its rapid rebound. This baffle can be configured with permeation holes or permeation channels that guide downwards onto the glass fiber to ensure that the sizing agent is fully wetted on the surface of the glass fiber under extrusion. To achieve automatic supply and automatic recovery of the sizing agent to the annular sponge layer 2002, a sizing agent supply device 28 is installed on the second mounting frame 5. The sizing agent supply device 28 is used to drip the sizing agent onto the annular sponge layer. (See reference...) Figure 2 as well as Figure 11 In order to recover excess wetting agent, a recovery tank 29 can be provided on the second mounting frame 5 and below the coating roller 20. A circulation pipe is provided below the recovery tank 29 to connect to the wetting agent supply device 28.

[0025] The fiberglass winding device provided in this embodiment of the invention, in order to avoid abnormal lifting of the fiberglass filaments due to differences in the angle position of the fiberglass supply filaments caused by the clamping roller 6 after clamping, can have a guide wire 25 rotatably installed on the second mounting frame 5 and upstream of the clamping roller 6. (See reference...) Figure 12 As shown, an arc groove 26 is provided on the second mounting bracket 5. At this time, a connecting shaft that can move in the arc groove 26 is installed at one end of the wire guide 25. A locking nut 27 is threadedly connected to the connecting shaft to adjust the wire angle of the wire guide 25. Example 2:

[0026] This invention provides a method for uniform-speed fiberglass winding, offering a means to stabilize fiberglass tension without requiring detection. It employs the fiberglass winding device described in Embodiment 1, and the method includes: The glass fiber filaments are clamped by the relatively arranged clamping rollers 6 and conveyed downstream. At this time, the clamping rollers 6 provide stable pressure and extraction speed, and the winder 3 matches the extraction speed to configure the basic rotation speed. The winding device 3 rotates to wind the glass fiber filaments located downstream of the clamping roller 6 onto the surface of the winding device 3. To prevent the winding device 3 from loosening the winding or directly breaking the glass fiber, the height position of the counterweight pulley 10 is detected in real time. When the counterweight pulley 10 is lower than the preset safe position height, the rotation speed of the winding device 3 is increased until the counterweight pulley 10 is at the safe position height. Or, when the counterweight pulley 10 is higher than the preset safe position height, the rotation speed of the winding device 3 is decreased until the counterweight pulley 10 is at the safe position height. By adjusting the counterweight pulley 10 to always be in the safe position, the stability of the winding is ensured.

[0027] The fiberglass uniform speed winding method provided in this embodiment of the invention can control the speed change of the winder 3 at a lower frequency, thereby effectively improving the stability of winding and reducing control problems caused by frequent changes in winding speed. Here, when the height of the counterweight pulley 10 is not within the preset safe position height range, and before changing the rotation speed of the winder 3, an additional control adjustment method is inserted. This method changes the adjustment mode of the counterweight pulley 10 by judging whether the height position of the movable pulley 14 is at the limit position. When the actual height of the counterweight pulley 10 is lower than the preset safe height: ① If the movable pulley 14 is at its lowest position, increase the rotation speed of the winder 3 until the counterweight pulley 10 is within the safe height range. At the same time, slowly increase the height of the movable pulley 14, keeping the counterweight pulley 10 within the safe height range, until the movable pulley 14 is raised to the middle position of the range of motion. (When adjusting, when changing the rotation speed of the winder 3, the movable pulley 14 needs to be moved at a speed lower than the rate of change of the linear velocity of the winder 3. The direction of position change of the counterweight pulley 10 should be monitored in real time. If the counterweight pulley 10 starts to move towards the safe position range, the movement of the movable pulley 14 should be paused. After the counterweight pulley 10 stabilizes in the safe position, the movable pulley 14 should be slowly reset to the middle position.) ② If the movable pulley 14 is not in the lowest position, the third drive device 13 drives the movable pulley 14 to slowly descend until the height of the counterweight pulley 10 is raised to a safe height range (when the movable pulley 14 has been lowered to the lowest position but the counterweight pulley 10 is still not in a safe height range, the method in ① is used to assist). When the actual height of the counterweight pulley 10 is higher than the preset safe height: ③ If the movable pulley 14 is at its highest position, reduce the rotation speed of the winder 3 until the counterweight pulley 10 is within the safe height range, and at the same time slowly lower the height of the movable pulley 14, keeping the counterweight pulley 10 within the safe height range until the movable pulley 14 is lowered to the middle position of the range of motion. ④ If the movable pulley 14 is not in the highest position, the third drive device 13 drives the movable pulley 14 to rise slowly until the height of the counterweight pulley 10 is raised to the safe height range (when the movable pulley 14 is raised to the highest position but the counterweight pulley 10 is still not in the safe height range, the method of ③ is used for assistance).

[0028] In this method, by adjusting the position and height of the movable pulley 14, stable winding of the winding device 3 can be achieved without frequently controlling its rotation speed. If multiple sets of movable pulleys 14 are used ( Figure 10 (As shown in two sets), or stable winding can be achieved without controlling the speed of the winder 3 to change.

[0029] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for uniformly winding glass fiber, characterized in that: The fiberglass winding device used includes a machine base (1), on which a first mounting frame (2) and a second mounting frame (5) are respectively provided on both sides. A winder (3) is rotatably mounted on the first mounting frame (2), and a first driving device (4) for driving the winder (3) to rotate is also provided on the first mounting frame (2). Two clamping rollers (6) with their surfaces aligned are rotatably mounted on the second mounting frame (5), and a second driving device (7) for driving one of the clamping rollers (6) to rotate is also provided on the second mounting frame (5). A pressing assembly is also provided on the machine base (1), and the pressing assembly includes a positioning bracket (8). A slide groove is provided on the positioning bracket (8) in the vertical direction, and a U-shaped slide plate (9) is slidably mounted in the slide groove. A counterweight pulley (10) is rotatably mounted on the U-shaped slide plate (9). Multiple photoelectric sensors (11) are also arranged on the positioning bracket (8) in the vertical direction to detect the height position of the counterweight pulley (10). The machine (1) is provided with several sets of fixed pulleys (12) that are opposite each other. A third drive device (13) is provided between each pair of adjacent fixed pulleys (12). A movable pulley (14) is fixedly provided at the movable end of the third drive device (13). The third drive device (13) is used to drive the movable pulley (14) to move closer to or away from the position of the corresponding set of fixed pulleys (12). The method includes: The glass fiber filaments are clamped by the opposing clamping rollers (6) and conveyed downstream; The winder (3) rotates to wind the glass fiber filament located downstream of the clamping roller (6) onto the surface of the winder (3). The height position of the counterweight pulley (10) is detected in real time. When the counterweight pulley (10) is lower than the preset safe position height, the rotation speed of the winder (3) is increased until the counterweight pulley (10) is at the safe position height. When the counterweight pulley (10) is higher than the preset safe position height, the rotation speed of the winder (3) is decreased until the counterweight pulley (10) is at the safe position height. When the height of the counterweight pulley (10) is not within the preset safe position height range, and before changing the rotation speed of the winding machine (3), the adjustment method of the counterweight pulley (10) is changed by judging whether the height position of the movable pulley (14) is at the limit position: When the actual position height of the counterweight pulley (10) is lower than the preset safe position height: ① If the movable pulley (14) is at its lowest position, increase the rotation speed of the winder (3) until the counterweight pulley (10) is within the safe position height range, and at the same time slowly increase the height of the movable pulley (14) until the movable pulley (14) is raised to the middle position of the range of motion while keeping the counterweight pulley (10) within the safe position height range. ②If the position of the movable pulley (14) is not at the lowest position, the third drive device (13) drives the movable pulley (14) to slowly descend until the height of the counterweight pulley (10) is raised to a safe position. When the actual position height of the counterweight pulley (10) is higher than the preset safe position height: ③ If the movable pulley (14) is at its highest position, reduce the rotation speed of the winder (3) until the counterweight pulley (10) is within the safe position height range, and at the same time slowly reduce the height of the movable pulley (14) until the movable pulley (14) is lowered to the middle position of the range of motion while keeping the counterweight pulley (10) within the safe position height range. ④ If the position of the movable pulley (14) is not at the highest position, the third drive device (13) drives the movable pulley (14) to rise slowly until the height of the counterweight pulley (10) is raised to a safe position.

2. The glass fiber uniform speed winding method according to claim 1, characterized in that, A take-up deflection assembly is provided on the machine (1), located upstream of the winder (3) and downstream of the fixed pulley (12). The take-up deflection assembly includes a linear motion module (16) and an adjusting pulley (15) fixedly installed at the movable end of the linear motion module (16). The linear motion module (16) is used to drive the adjusting pulley (15) to reciprocate in the axial direction of the winder (3).

3. The glass fiber uniform speed winding method according to claim 2, characterized in that, A defect detection component is provided on the machine base (1), upstream of the adjusting pulley (15) and downstream of the fixed pulley (12). The defect detection component includes a bottom light source (17) fixedly installed on the machine base (1). A mask (18) for forming a darkroom environment is provided on the bottom light source (17). Cable bundlers (19) are provided on both sides of the bottom light source (17) and the mask (18). A guide hole for glass fiber to pass through is provided on the cable bundler (19). A camera with a lens part and the bottom light source (17) is provided on the mask (18).

4. The glass fiber uniform speed winding method according to claim 3, characterized in that, The second mounting bracket (5) is provided with slide rails (21) arranged vertically on both sides. Slider (22) is slidably arranged on both slide rails (21). One of the clamping rollers (6) not connected to the second drive device (7) is rotatably arranged on the two opposite sliders (22). Adjustment plates (23) are provided on the second mounting bracket (5) and on the upper and lower sides of each slider (22). Each adjustment plate (23) is threaded with an adjustment bolt (24) for adjusting the position of the slider (22).

5. The glass fiber uniform speed winding method according to claim 2, characterized in that, The second mounting bracket (5) is also rotatably provided with a coating roller (20), which includes a rolling part (2001) that directly contacts the surface of the lower clamping roller (6). The surface of the rolling part (2001) is provided with a groove and an annular sponge layer (2002) with a surface protruding from the surface of the rolling part (2001) is provided in the groove. The annular sponge layer (2002) is used to coat the glass fiber with a wetting agent at the position on the surface of the lower clamping roller (6).

6. The glass fiber uniform speed winding method according to claim 5, characterized in that, The second mounting frame (5) is provided with a wetting agent supply device (28), which is used to drip wetting agent into the position of the annular sponge. The second mounting frame (5) is provided with a recovery tank (29) located below the coating roller (20), and a circulation pipe is provided below the recovery tank (29) to connect to the wetting agent supply device (28).

7. The glass fiber uniform speed winding method according to claim 1, characterized in that, A guide wire (25) is rotatably mounted on the second mounting frame (5) and located upstream of the clamping roller (6). A circular arc groove (26) is provided on the second mounting frame (5). A connecting shaft that can move within the circular arc groove (26) is installed at one end of the guide wire (25). A locking nut (27) is threaded onto the connecting shaft.

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