Glass fiber cloth drying device

Abstract

The present application relates to the technical field of glass fiber cloth processing, and particularly relates to a glass fiber cloth drying device, which comprises a drying box, a first mounting plate, a pneumatic cylinder, a lifting cover, a drying module, a conveying roller and a tension control assembly. A rack is arranged on the drying box, and the pneumatic cylinder is mounted on the rack. The movable end of the pneumatic cylinder piston rod is connected with the lifting cover used for blocking the top opening of the drying box. The drying module is symmetrically arranged on the inner side of the lifting cover and the inner side of the drying box. The glass fiber cloth passes through the symmetrically arranged drying modules. The "V" shaped path of the cloth running is formed by the guide roller frame and the rotating roller frame on both sides. The U-shaped lifting frame is driven to lift by the second electric push rod, so as to adjust the height of the rotating roller frame.

Description

Technical Field

[0001] This invention relates to the field of glass fiber cloth processing technology, and more specifically to a glass fiber cloth drying device. Background Technology

[0002] Fiberglass cloth, as a high-performance reinforcing material, is widely used in aerospace, electronic insulation, and building reinforcement. During its manufacturing process, fiberglass cloth requires a drying process to remove solvents from the impregnating resin, and this drying process directly affects the fabric's mechanical properties, surface quality, and dimensional stability. However, traditional drying equipment has the following prominent problems:

[0003] 1. Poor tension control: Fiberglass cloth is prone to deformation due to thermal expansion and contraction during the drying process, which can easily lead to tension fluctuations. Existing mechanical tensioning devices are difficult to dynamically adjust, which can easily cause the cloth to loosen and wrinkle or be overstretched and deformed.

[0004] 2. Wrinkle defects: Under high temperature conditions, the transverse shrinkage of the fiber cloth lacks active inhibition, which easily forms irreversible wrinkles.

[0005] Therefore, there is an urgent need to design a glass fiber cloth drying device that can dynamically adjust the tension and avoid wrinkles caused by lateral shrinkage of the cloth. Summary of the Invention

[0006] A fiberglass cloth drying device includes a drying chamber, a first mounting plate, a cylinder, a lifting cover, drying modules, conveying rollers, and a tension control assembly. A frame is mounted on the drying chamber, and a cylinder is mounted on the frame. The movable end of the cylinder piston rod is connected to a lifting cover for sealing the top opening of the drying chamber. Drying modules are symmetrically arranged vertically on the inner side of the lifting cover and the inner side of the drying chamber. Fiberglass cloth passes between the symmetrically arranged drying modules. First mounting plates are symmetrically arranged at both ends of the inlet and outlet of the drying chamber. Conveying rollers for inputting or outputting the fiberglass cloth into or out of the drying chamber are rotatably arranged between the first mounting plates, and the fiberglass cloth passes through the parallel conveying rollers through friction. The fiberglass cloth is tightened by conveyor rollers on both sides. A tension control assembly for adjusting the tension of the fiberglass cloth is set between the conveyor rollers on both sides. The tension control assembly includes a guide roller frame, a rotating roller frame, a U-shaped lifting frame, and a second electric push rod. An n-shaped frame is symmetrically arranged inside the drying chamber. The rotating roller frame and the U-shaped lifting frame are slidably arranged between the n-shaped frames. The U-shaped lifting frame is located below the rotating roller frame and is connected to the movable end of the piston rod of the second electric push rod installed on the drying chamber. Two guide roller frames are symmetrically arranged on both sides of the rotating roller frame and the U-shaped lifting frame. The guide roller frames and the rotating roller frame on both sides form a "V" shape. The second electric push rod drives the U-shaped lifting frame to rise and fall to adjust the height of the rotating roller frame on the n-shaped frame.

[0007] To further explain, a first gear is installed at one end of the conveyor roller that rotates through the first mounting plate. The first gears installed at the ends of the two parallel conveyor rollers mesh with each other. At least one end of the conveyor roller is connected to the output shaft of the first drive motor installed on the first mounting plate.

[0008] To further explain, the first mounting plate is divided into two parts: an upper mounting plate and a lower mounting plate. The outer wall of the lower mounting plate is provided with a first electric push rod, and the movable end of the first electric push rod is connected to the upper mounting plate.

[0009] To further explain, a pressure sensor is installed between the roller frame and the U-shaped lifting frame.

[0010] To further explain, a second mounting plate is symmetrically arranged on both sides of the glass fiber cloth conveying direction inside the drying oven. A limiting frame is provided above the second mounting plate. On the side of the limiting frame facing the glass fiber cloth, there are evenly spaced U-shaped frames. A first guide rod perpendicular to the limiting frame is provided inside the U-shaped frame. A pulling component is slidably arranged on the first guide rod. A first spring is provided between the pulling component and the inner wall of the U-shaped frame. A squeezing roller is provided between adjacent U-shaped frames. A wedge block located inside the lifting cover squeezes and cooperates with the squeezing roller. A second guide rod is slidably arranged between the two limiting frames. A second spring is wound around the second guide rod. The two ends of the second spring are respectively connected to the two limiting frames.

[0011] To further explain, the traction assembly includes a traction frame, a third electric push rod, an upper traction roller, a lower traction roller, a second gear, and a second drive motor. The traction frame is slidably mounted on the second mounting plate. The traction frame is divided into an upper traction frame and a lower traction frame, which are separable. A third electric push rod is mounted on the lower traction frame, and the movable end of the third electric push rod is connected to the upper traction frame. Two parallel upper traction rollers are horizontally mounted on the upper traction frame, and a lower traction roller is mounted on the lower traction frame. The upper and lower traction rollers form a triangle, and the distance between the upper and lower traction rollers is adapted to the thickness of the fiberglass cloth. A second gear is mounted on one end of each traction roller that rotates through the traction frame. The second gear mounted on the end of the lower traction roller meshes with the second gear mounted on the end of the upper traction roller. The output shaft of the second drive motor mounted on the lower traction frame is connected to the end of the lower traction roller.

[0012] To further explain, the traction roller and the surface of the fiberglass cloth are in frictional engagement at a 45-degree angle.

[0013] To further explain, the drying oven has a gas collection hood on one side of the inlet for the glass fiber cloth input. The gas collection hood consists of an upper hood and a lower hood. The glass fiber cloth passes between the upper and lower hoods. The upper hood is connected to the upper mounting plate via a connector. Impurity removal air knives are symmetrically arranged inside the upper and lower hoods. The impurity removal air knives are in oblique contact with the surface of the glass fiber cloth. Air blowing ports are evenly spaced on the impurity removal air knives. The air blowing ports are connected to the air pipes set on the impurity removal air knives. An air inlet pipe is set between the air pipe and the exhaust port of the circulation pump installed on the drying oven. An air suction pipe is connected between the air inlet of the circulation pump and the inner cavity of the gas collection hood.

[0014] To further explain, a filter for filtering the gas is installed between the air inlet and exhaust outlet of the circulating pump.

[0015] To further explain, an infrared temperature sensor is installed on one outer wall of the lifting cover, and the infrared temperature sensor is located above the output port of the drying oven for the output of fiberglass cloth.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The guide roller frame and the rotating roller frame on both sides form a "V" shaped path for the fabric to travel. The U-shaped lifting frame is raised and lowered by the extension and retraction of the second electric push rod, thereby adjusting the height of the rotating roller frame and realizing the dynamic adjustment of the fabric tension.

[0017] 2. When the lifting cover is closed, the wedge block squeezes the extrusion roller to drive the limit frame to move outward, thereby driving the traction assembly to move outward. The upper and lower traction rollers clamp the fiber cloth at a 45° angle and apply bidirectional tensile force to spread the fabric laterally to eliminate its wrinkles. Then, the upper and lower traction rollers rotate the fabric in opposite directions on both sides to further smooth out the surface wrinkles. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the lifting cover after it has been raised according to the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the components such as the conveyor roller, guide roller frame, and rotating roller frame in cross-sectional view of the drying box of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the conveying roller and tension control assembly in cross-sectional view of the drying oven of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the n-shaped frame, the rotating roller frame, and the pressure sensor in the cross-sectional view of the U-shaped lifting frame of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the wedge block and the pulling assembly after the lifting cover of the present invention is raised.

[0024] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the limiting frame, the extrusion roller, the second guide rod, and the traction assembly.

[0025] Figure 8 This is a three-dimensional sectional view of the traction component of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the components such as the air collection hood and the circulation pump in cross-section of the drying oven of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the air collection hood, air inlet pipe, air intake pipe, circulation pump and filter of the present invention.

[0028] Figure 11 This is a three-dimensional sectional view of the gas collection hood of the present invention.

[0029] In the attached diagrams: 1: Drying oven; 101: First mounting plate; 102: N-shaped frame; 2: Machine frame; 3: Cylinder; 4: Lifting cover; 41: Wedge block; 5: Drying module; 6: Conveying roller; 61: First gear; 7: First drive motor; 8: First electric push rod; 9: Guide roller frame; 10: Rotary roller frame; 11: U-shaped lifting frame; 12: Second electric push rod; 13: Pressure sensor; 14: Second mounting plate; 15: Limiting frame; 151: I-shaped frame; 152: ... 153: First guide rod; 16: First spring; 17: Extrusion roller; 18: Second guide rod; 19: Second spring; 10: Pulling assembly; 191: Pulling stand; 192: Third electric push rod; 193: Upper pull roller; 194: Lower pull roller; 195: Second gear; 196: Second drive motor; 20: Gas collection hood; 21: Air inlet pipe; 22: Suction pipe; 23: Circulation pump; 231: Filter; 24: Impurity removal air knife; 25: Infrared temperature sensor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0031] Example: A fiberglass cloth drying device, such as Figures 1-5As shown, the device includes a drying chamber 1, a first mounting plate 101, a cylinder 3, a lifting cover 4, a drying module 5, a conveyor roller 6, and a tension control assembly. A frame 2 is mounted on the drying chamber 1, and a cylinder 3 is mounted on the frame 2. The movable end of the piston rod of the cylinder 3 is connected to the lifting cover 4, which seals the top opening of the drying chamber 1. When the lifting cover 4 is placed on the drying chamber 1, a relatively sealed space is formed inside the drying chamber 1. Drying modules 5 are symmetrically arranged inside the lifting cover 4 and inside the drying chamber 1, with fiberglass cloth arranged symmetrically from top to bottom. The drying modules 5 pass through each other. Each drying module 5 includes a dryer for generating heat, an air nozzle for blowing heat onto the fabric, and an air duct for guiding heat to the air nozzle. The simultaneous heating of the upper and lower drying modules 5 forms a wrap-around hot air channel, ensuring uniform heating of both sides of the fiber cloth and eliminating temperature differences between the inner and outer layers. Symmetrically arranged at both ends of the inlet and outlet of the drying chamber 1 are first mounting plates 101. Parallel and rotatable conveyor rollers 6 are mounted between the first mounting plates 101 for inputting or outputting the fiberglass cloth into or out of the drying chamber 1. The fiberglass cloth rubs through the upper and lower parallel conveyor rollers 6 and is tightened by the conveyor rollers 6 on both sides. A tension control assembly for adjusting the tension of the fiberglass cloth is provided between the two conveyor rollers 6. The tension control assembly includes a guide roller frame 9, a rotating roller frame 10, a U-shaped lifting frame 11, and a second electric push rod 12. N-shaped frames 102 are symmetrically arranged inside the drying chamber 1. The rotating roller frame 10 and the U-shaped lifting frame 11 are slidably arranged between the N-shaped frames 102. The U-shaped lifting frame 11 is located below the rotating roller frame 10 and is parallel to the rotating roller frame 10. The piston rod of the second electric push rod 12 installed on the drying chamber 1 is connected to the movable end. Two guide roller frames 9 are symmetrically arranged on both sides of the rotating roller frame 10 and the U-shaped lifting frame 11. The guide roller frames 9 and the rotating roller frame 10 on both sides form a "V" shaped structure. The fabric passes through the channel between the "V" shaped structure formed by the guide roller frames 9 and the rotating roller frame 10 on both sides. The second electric push rod 12 drives the U-shaped lifting frame 11 to rise and fall to adjust the height of the rotating roller frame 10 on the n-shaped frame 102, thereby realizing the adjustment of the tension of the fabric.

[0032] like Figure 4 As shown, a first gear 61 is mounted on one end of the conveyor roller 6 that rotates through the first mounting plate 101. The first gears 61 mounted on the ends of the two parallel upper and lower conveyor rollers 6 mesh with each other. At least one end of the conveyor roller 6 is connected to the output shaft of the first drive motor 7 mounted on the first mounting plate 101. The first drive motor 7 is preferably mounted on the lower mounting plate. When the first drive motor 7 is working, it drives the lower conveyor roller 6 connected to it to work. The lower conveyor roller 6 drives the upper conveyor roller 6 to rotate in the opposite direction through the meshing first gears 61. The rotation of the upper and lower conveyor rollers 6 drives the fabric to move forward.

[0033] like Figure 4As shown, the first mounting plate 101 is divided into an upper mounting plate and a lower mounting plate. The outer wall of the lower mounting plate is provided with a first electric push rod 8. The movable end of the first electric push rod 8 is connected to the upper mounting plate. The extension movement of the first electric push rod 8 causes the upper mounting plate to move upward away from the lower mounting plate, which makes it convenient to place the fabric between the upper and lower conveying rollers 6 before starting. Then the first electric push rod 8 retracts downward so that the upper and lower conveying rollers 6 clamp the fabric. The extension and retraction movement of the first electric push rod 8 changes the distance between the upper and lower conveying rollers 6, thereby adapting to glass fiber cloth of different thicknesses or adjusting the initial clamping force.

[0034] like Figure 5 As shown, a pressure sensor 13 is installed between the roller frame 10 and the U-shaped lifting frame 11. The pressure sensor 13 is used to monitor the downward pressure value of the roller frame 10 in real time, thereby reflecting the current tension of the fabric.

[0035] like Figure 1 As shown, an infrared temperature sensor 25 is installed on one outer wall of the lifting cover 4. The infrared temperature sensor 25 is located above the output port of the drying chamber 1 for the fiberglass cloth. The infrared temperature sensor 25 monitors the surface temperature of the fiberglass cloth at the output port in real time and feeds the monitored temperature signal back to the control system. The control system dynamically adjusts the heating power of the upper and lower drying modules 5 (such as adjusting the heater power, hot air volume / temperature) according to the deviation between the actual temperature and the set drying temperature. If the temperature is too high, the heating power is reduced to prevent the cloth from being overheated and damaged; if the temperature is too low, the heating power is increased to ensure that the drying effect meets the standard.

[0036] In use, the first drive motor 7 drives the connected conveyor roller 6 to rotate, and the two meshing first gears 61 cause the other conveyor roller 6 to rotate in the opposite direction. The friction between the conveyor rollers 6 applies traction to the fabric, so that the fabric is initially stretched and passes through the drying chamber 1 at a uniform speed. The upper and lower drying modules 5, symmetrically arranged inside the lifting cover 4 and inside the drying chamber 1, form a double-sided heating channel, so that when the fiberglass cloth passes through the middle, hot air from both sides acts simultaneously to ensure uniform drying. The fiberglass cloth passes through the guide... When the fabric passes through the "V"-shaped structure formed by the guide roller frame 9 and the rotating roller frame 10 (i.e., the tension control assembly formed by the guide roller frame 9 and the rotating roller frame 10 on both sides), under the continuous traction of the right-end conveyor roller 6, the fabric tension will attempt to lift the rotating roller frame 10 upwards as it passes through the "V"-shaped path of the "V"-shaped structure formed by the guide roller frame 9 and the rotating roller frame 10 on both sides. The pressure sensor 13, located between the rotating roller frame 10 and the U-shaped lifting frame 11, can detect the pressure value applied by the rotating roller frame 10 to the U-shaped lifting frame 11 in real time (this pressure directly reflects the pressure value). The pressure sensor 13 transmits the real-time detected pressure value to the control system, which then compares the pressure value detected by the pressure sensor 13 with the preset target tension value. If the detected pressure is higher than the preset value (excessive tension), the control system drives the second electric push rod 12 to extend upward, raising the height of the U-shaped lifting frame 11 and the roller frame 10, causing the bottom of the "V" shaped path to rise and the fabric path to become smoother, thereby reducing tension. If the detected pressure is lower than the preset value (insufficient tension), the control system drives the second electric push rod 12 downward. The shrinking and lowering of the height of the U-shaped lifting frame 11 and the rotating roller frame 10 causes the bottom of the "V"-shaped path to drop, lengthening the fabric path and increasing tension. Through this closed-loop feedback adjustment, the tension of the fabric during the drying process is maintained within the set range. In addition, since the conveying rollers 6 on the left and right sides (i.e., the fabric input conveying roller 6 and the fabric output conveying roller 6) are both driven by independent first drive motors 7, the tension of the fabric can also be actively changed by adjusting the rotation speed of the conveying roller 6 at the fabric input end and the rotation speed of the conveying roller 6 at the output end.

[0037] like Figure 6 and Figure 7As shown, symmetrical second mounting plates 14 are provided on both sides of the drying oven 1, centered on the direction of fiberglass cloth transport. The second mounting plates 14 have evenly spaced "U"-shaped grooves. A corresponding limiting frame 15 is provided above the second mounting plates 14. On the side of the limiting frame 15 facing the fiberglass cloth, "U"-shaped frames 151 are evenly spaced and positioned directly above the "U"-shaped grooves. A first guide rod 152, perpendicular to the limiting frame 15, is provided inside the "U"-shaped frame 151. A pulling assembly 19 is slidably mounted on the first guide rod 152, passing through it. The lower part of the pulling assembly 19 slides within the "U"-shaped groove. A first spring 153 is provided between the pulling assembly 19 and the inner wall of the "U"-shaped frame 151, wound around the first guide rod 152. A pressing roller 16 is provided between adjacent "U"-shaped frames 151 and is located on the lifting cover. The wedge-shaped block 41 on the inner side of the lifting cover 4 is pressed and engaged with the extrusion roller 16. A second guide rod 17 is slidably arranged between the two limiting frames 15. A second spring 18 is wound around the second guide rod 17. The two ends of the second spring 18 are respectively connected to the two limiting frames 15. The second spring 18 is a tension spring. When the lifting cover 4 moves downward, the wedge-shaped block 41 presses the extrusion roller 16 to make the limiting frame 15 move outward. The second spring 18 is stretched and deformed. When the limiting frame 15 moves outward, it presses the first spring 153. As the limiting frame 15 continues to move outward, the force applied by the limiting frame 15 to the first spring 153, combined with the reaction force of the first spring 153, drives the pulling assembly 19 to move outward along the "U"-shaped slide groove, thereby stretching the fabric laterally and making the fabric stretched and tightened in the width direction. When the lifting cover 4 moves upward, the wedge-shaped block 41 moves away from the extrusion roller 16, and the second spring 18 drives the limiting frames 15 on both sides to reset.

[0038] like Figure 8As shown, the traction assembly 19 includes a traction stand 191, a third electric push rod 192, an upper traction roller 193, a lower traction roller 194, a second gear 195, and a second drive motor 196. The traction stand 191 is slidably mounted on the second mounting plate 14. The traction stand 191 is divided into an upper traction frame and a lower traction frame, which are separable. The lower traction frame is equipped with the third electric push rod 192, the movable end of which is connected to the upper traction frame. Two parallel upper traction rollers 193 are horizontally arranged on the upper traction frame, and a lower traction roller 194 is arranged on the lower traction frame. The upper traction rollers 193 and the lower traction roller 194 are connected. The lower traction roller 194 forms a triangle, and the distance between the upper traction roller 193 and the lower traction roller 194 is adapted to the thickness of the fiberglass cloth. It is worth noting that the distance between the upper traction roller 193 and the lower traction roller 194 can be adjusted by the extension and retraction of the third electric push rod 192. A second gear 195 is installed at one end of the traction roller that rotates through the traction stand 191. The second gear 195 installed at the end of the lower traction roller 194 meshes with the second gear 195 installed at the end of the upper traction roller 193. The output shaft of the second drive motor 196 installed on the lower traction stand is connected to the end of the lower traction roller 194.

[0039] The upper traction roller 193 and the lower traction roller 194 are in frictional engagement with the upper and lower surfaces of the fiberglass cloth at a 45-degree angle, respectively. This arrangement enables the upper traction roller 193 and the lower traction roller 194 to generate a pulling force in the width direction of the cloth when rotating, and this pulling force will not affect the movement of the cloth.

[0040] When the cylinder 3 drives the lifting cover 4 to move downward, the wedge block 41 moves downward and approaches the extrusion roller 16. After the extrusion roller 16 is squeezed by the wedge block 41, the limit frames 15 on both sides move away from each other, and the second spring 18 is stretched and deformed. When the limit frames 15 on both sides move away from each other, they drive the pulling frame 191 to move away from the fabric through the first spring 153. Since the upper pulling roller 193 and the lower pulling roller 194 form a tight clamping structure for the fabric, the lateral movement of the pulling frame 191 causes the upper pulling roller 193 and the lower pulling roller 194 to directly apply a lateral tensile force to the fabric, so that the fabric is stretched and tightened in the width direction. When the second drive motor 196 is working, it drives the lower pull roller 194 to rotate, and drives the upper pull roller 193 to rotate in the opposite direction through the second gear 195. The upper pull roller 193 and the lower pull roller 194 rotate and rub against both sides of the fabric. The friction generated by the continuously rotating upper and lower pull rollers 194 against the fabric surface further smooths out any wrinkles or looseness, thereby preventing wrinkles from appearing on the fabric. When the lifting cover 4 is raised (the wedge block 41 leaves the squeezing roller 16), the stretched second spring 18 contracts, pulling the two side limit frames 15 back to their original positions. The first spring 153 then pushes the pull frame 191 back to its original position, releasing the additional lateral tension on the fabric.

[0041] like Figures 9-11 As shown, a gas collecting hood 20 is provided on one side of the drying oven 1, which has an inlet for glass fiber cloth. The gas collecting hood 20 is divided into an upper hood and a lower hood. The glass fiber cloth passes through the upper hood and the lower hood. The upper hood is connected to the upper mounting plate through a connector. Impurity removal air knives 24 are symmetrically arranged inside the upper hood and the lower hood. The impurity removal air knives 24 are obliquely contacted with the surface of the glass fiber cloth. Air blowing ports are evenly spaced on the impurity removal air knives 24. The air blowing ports are connected to the air pipes provided on the impurity removal air knives 24. An air inlet pipe 21 is provided between the air pipe and the exhaust port of the circulation pump 23 installed on the drying oven 1. An air suction pipe 22 is connected between the air inlet of the circulation pump 23 and the inner cavity of the gas collecting hood 20.

[0042] like Figure 10 As shown, a filter 231 for filtering the gas is provided between the air inlet and the exhaust port of the circulating pump 23.

[0043] When the fiberglass cloth first enters the inlet of the drying chamber 1, it passes between the upper and lower covers. First, when the cloth passes through the impurity removal air knife 24, the high-speed airflow sprayed by the air knife 24 removes the fiber debris attached to the surface of the cloth. The removed impurities are blown into the inner cavity of the gas collection hood 20 by the airflow. The circulation pump 23 draws the impurity-containing gas out of the inner cavity of the gas collection hood 20 through the suction pipe 22. The impurity-containing gas is first filtered by the filter 231 set between the air inlet and the exhaust port of the circulation pump 23. The clean gas is discharged from the exhaust port of the circulation pump 23 and supplied to the impurity removal air knife 24 again through the air inlet pipe 21, forming a circulation purification system to avoid secondary pollution.

[0044] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. A glass fiber cloth drying device, characterized in that: The equipment includes a drying box (1), a frame (2) on the drying box (1), a cylinder (3) on the frame (2), and a lifting cover (4) for sealing the top opening of the drying box (1) connected to the piston rod of the cylinder (3). Drying modules (5) are symmetrically arranged on the inner side of the lifting cover (4) and the inner side of the drying box (1). Fiberglass cloth passes through the symmetrical drying modules (5). First mounting plates (101) are symmetrically arranged at both ends of the inlet and outlet of the drying box (1). Conveying rollers (6) for inputting or outputting fiberglass cloth into or out of the drying box (1) are arranged in parallel and rotatable manner between the first mounting plates (101). The fiberglass cloth passes through the parallel conveying rollers (6) and is tightened by the conveying rollers (6) on both sides. A mechanism for adjusting the fiberglass cloth is arranged between the conveying rollers (6) on both sides. The tension control assembly of the visor is tensioned. The tension control assembly includes a guide roller frame (9), a rotating roller frame (10), a U-shaped lifting frame (11), and a second electric push rod (12). An n-shaped frame (102) is symmetrically arranged inside the drying box (1). The rotating roller frame (10) and the U-shaped lifting frame (11) are slidably arranged between the n-shaped frames (102). The U-shaped lifting frame (11) is located below the rotating roller frame (10) and is connected to the movable end of the piston rod of the second electric push rod (12) installed on the drying box (1). Two guide roller frames (9) are symmetrically arranged on both sides of the rotating roller frame (10) and the U-shaped lifting frame (11). The guide roller frames (9) and the rotating roller frame (10) on both sides form a "V" shaped structure. The second electric push rod (12) drives the U-shaped lifting frame (11) to rise and fall to adjust the height of the rotating roller frame (10) on the n-shaped frame (102). The conveying roller (6) rotates through the end of the first mounting plate (101) and is equipped with a first gear (61). The first gears (61) installed at the ends of the two parallel conveying rollers (6) mesh with each other. At least one end of the conveying roller (6) is connected to the output shaft of the first drive motor (7) installed on the first mounting plate (101). The first mounting plate (101) is divided into an upper mounting plate and a lower mounting plate. The outer wall of the lower mounting plate is provided with a first electric push rod (8), and the movable end of the first electric push rod (8) is connected to the upper mounting plate. A pressure sensor (13) is installed between the roller frame (10) and the U-shaped lifting frame (11). A second mounting plate (14) is provided on both sides of the drying oven (1) symmetrically centered on the direction of glass fiber cloth transmission. A limiting frame (15) is provided above the second mounting plate (14). A U-shaped frame (151) is evenly spaced on the side of the limiting frame (15) facing the glass fiber cloth. A first guide rod (152) perpendicular to the limiting frame (15) is provided inside the U-shaped frame (151). A traction component (19) is slidably provided on the first guide rod (152). A first spring (153) is provided between the traction component (19) and the inner wall of the U-shaped frame (151). A squeezing roller (16) is provided between adjacent U-shaped frames (151). A wedge block (41) located inside the lifting cover (4) is squeezed and cooperated with the squeezing roller (16). A second guide rod (17) is slidably provided between the two limiting frames (15). A second spring (18) is wound around the second guide rod (17). The two ends of the second spring (18) are respectively connected to the two limiting frames (15). The drying oven (1) has an air collection hood (20) on one side of the inlet for glass fiber cloth input. The air collection hood (20) is divided into an upper hood and a lower hood. The glass fiber cloth passes through the upper hood and the lower hood. The upper hood is connected to the upper mounting plate through a connector. The upper hood and the lower hood are symmetrically arranged with impurity removal air knives (24). The impurity removal air knives (24) are evenly spaced with air blowing ports. The air blowing ports are connected to the air pipes on the impurity removal air knives (24). The air pipes are connected to the exhaust port of the circulation pump (23) installed on the drying oven (1) with an air inlet pipe (21). The air inlet of the circulation pump (23) is connected to the inner cavity of the air collection hood (20) with an air suction pipe (22). A filter (231) for filtering the gas is provided between the air inlet and the exhaust port of the circulating pump (23). An infrared temperature sensor (25) is installed on one outer wall of the lifting cover (4). The infrared temperature sensor (25) is located above the output port for the glass fiber cloth to be output in the drying oven (1).

2. The glass fiber cloth drying apparatus according to claim 1, characterized in that: The traction assembly (19) includes a traction stand (191), a third electric push rod (192), an upper traction roller (193), a lower traction roller (194), a second gear (195), and a second drive motor (196). The traction stand (191) is slidably mounted on the second mounting plate (14). The traction stand (191) is divided into an upper traction frame and a lower traction frame, which are separable. The lower traction frame is equipped with a third electric push rod (192), the movable end of which is connected to the upper traction frame. Two parallel upper traction rollers (193) are horizontally mounted on the upper traction frame. A lower traction roller (194) is provided on the frame. The upper traction roller (193) and the lower traction roller (194) form a triangle, and the distance between the upper traction roller (193) and the lower traction roller (194) is adapted to the thickness of the fiberglass cloth. A second gear (195) is installed at one end of the traction roller that rotates through the traction stand (191). The second gear (195) installed at the end of the lower traction roller (194) meshes with the second gear (195) installed at the end of the upper traction roller (193). The output shaft of the second drive motor (196) installed on the lower traction stand is connected to the end of the lower traction roller (194).

3. The glass fiber cloth drying apparatus according to claim 2, characterized in that: Both the upper traction roller (193) and the lower traction roller (194) are in frictional engagement with the surface of the glass fiber cloth at a 45-degree angle.

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