Raw paper dipping and drying integrated system based on microwave-assisted curing

Abstract

The invention provides a raw paper dipping and drying integrated system based on microwave-assisted curing, which relates to the technical field of raw paper dipping processing, and comprises a raw paper dipping pool, a raw paper drying machine arranged above the raw paper dipping pool, a drying conveyor arranged at the bottom of the raw paper drying machine, and a raw paper dipping pool fixedly connected with the bottom of the drying conveyor, the transverse deviation of the body paper can be actively corrected, slight deviation caused by equipment vibration or tension fluctuation is eliminated, an elastic tension buffering area is formed through the composite design of the fixed tensioning frame and the floating tensioning frame, the body paper passing through the interior of the microwave curing machine is tensioned, the body paper is kept in a straightened state, and the service life of the body paper is prolonged. The condition that the body paper is wrinkled and warped due to lack of tensioning is avoided, and the problems that when the microwave curing device is used for curing treatment, due to the fact that the interior of the curing device is lack of a paper shape fixing structure and lack of tensioning, the paper is prone to curling and edge warping in the curing process, the body paper is deformed, and the product quality is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of base paper impregnation processing, and in particular to a base paper impregnation and drying integrated system based on microwave-assisted curing. Background Art

[0002] Base paper impregnation is a process in which base paper is immersed in specific adhesives such as resins, flame retardants, and waterproofing agents to improve its physical and chemical properties. It is widely used in the production of functional papers such as high-temperature resistant, corrosion-resistant, and flame-retardant papers. During the impregnation process, the base paper is completely immersed in adhesives such as mixtures of melamine resins and polyethylene, and the adhesive is ensured to evenly penetrate into the fiber to enhance wear resistance and corrosion resistance. After impregnation, it needs to be dried to remove surface moisture and preliminarily solidify the adhesive. The resin is completely cross-linked through hot air circulation or roller heating to form a stable structure. The curing process is often carried out simultaneously with drying. For example, high-temperature and high-pressure equipment is used to promote resin polymerization reaction. The pre-curing degree needs to reach 40%-55% to ensure that the coating is uniform and the mechanical properties meet the standards. Some processes optimize the curing effect by adding composite additives such as quartz powder and perlite powder to improve the heat resistance, flame retardancy and mechanical strength of the paper.

[0003] The base paper impregnation equipment in the prior art is combined with base paper drying, curing and other equipment to form an integrated base paper impregnation system. After the base paper is dried, it is cured by a microwave curing device. Due to the lack of a solid structure of the paper inside the curing device and the lack of tension, the paper is prone to curling and warping during the curing process, causing the base paper to deform and affect product quality. Summary of the Invention

[0004] The present invention provides an integrated system for impregnation and drying of base paper based on microwave-assisted curing, so as to solve the problem in the prior art that the base paper impregnation equipment is combined with base paper drying, curing and other equipment to form an integrated base paper impregnation system. After the base paper is dried, it is cured by a microwave curing device. Due to the lack of a solid structure of the paper inside the curing device and the lack of tension, the paper is prone to curling and warping during the curing process, resulting in deformation of the base paper and affecting product quality.

[0005] The present invention provides an integrated system for impregnation and drying of base paper based on microwave-assisted curing, which specifically comprises: a base paper impregnation tank, a base paper dryer is arranged above the base paper impregnation tank, a drying conveyor is installed at the bottom of the base paper dryer, the bottom of the drying conveyor is fixedly connected to the base paper impregnation tank, a microwave curing machine is docked on the right side of the base paper dryer, a mechanical auxiliary tensioning mechanism is installed inside the microwave curing machine, the mechanical auxiliary tensioning mechanism consists of a fixed tensioning frame and a floating tensioning frame, the fixed tensioning frame is fixedly connected to the inner wall of the microwave curing machine, the floating tensioning frame is movably connected to the fixed tensioning frame, and a front and rear of the microwave curing machine are respectively installed with screws. A floating adjustment push cylinder is provided, and a floating pulling platform is fixedly connected to the front and rear of the floating tensioning frame respectively. The floating adjustment push cylinder push rod is connected to the floating pulling platform. A curing machine control panel is provided in front of the microwave curing machine, and a group of limit rod groups are provided on the left and right sides of the microwave curing machine respectively. The limit rod group consists of a first limit roller and a second limit roller. The first limit roller and the second limit roller are both rotatably connected to the inner wall of the microwave curing machine through bearings. The first limit roller is connected to the upper surface of the base paper in a rolling manner, and the second limit roller is connected to the lower surface of the base paper in a rolling manner. The second limit roller has a built-in pressure sensor, and the pressure sensor is connected to the curing machine control panel through a data cable.

[0006] Furthermore, an inlet roller and an outlet roller are rotatably connected above the opening of the base paper impregnation tank, and a first guide roller, a second guide roller and a third guide roller are rotatably connected inside the base paper impregnation tank through bearings. The first guide roller, the second guide roller and the third guide roller are all rollingly connected to the base paper, and the first guide roller, the second guide roller and the third guide roller are all perpendicular to the front surface of the base paper impregnation tank.

[0007] Furthermore, a circulating purification tank is set on the right side of the base paper impregnation tank through a partition. A circulating filter belt is installed inside the circulating purification tank. The circulating filter belt is tilted forward and downward. A separation partition is fixedly connected inside the circulating purification tank. The separation partition is located at the bottom front end of the circulating filter belt. The circulating filter belt is densely provided with filter holes.

[0008] Furthermore, a cleaning drum is rotatably connected inside the circulating purification tank, and the cleaning drum is fitted to the lower front end of the circulating filter belt. A filter drive is installed on the right side of the circulating purification tank by screws. The filter drive shaft is connected to and drives the cleaning drum, and the cleaning drum is connected to the circulating filter belt shaft through a chain drive.

[0009] Furthermore, a diversion outflow box and a diversion return box are fixedly connected to the inside of the base paper impregnation tank. The bottom of the diversion outflow box is connected to the diversion pump through a pipe. The input end of the diversion pump is connected to the bottom of the circulation purification tank through a pipe. A circulation outlet is opened at the rear of the diversion outflow box.

[0010] Furthermore, a diversion nozzle is installed on the top of the side of the diversion reflux box through a pipe. The diversion nozzle is located at the rear side of the circulating purification tank and above the circulating filter belt. A circulating reflux port is opened in front of the diversion reflux box.

[0011] Furthermore, a tensioning guide rod is vertically welded to the fixed tensioning frame, and three fixed tensioning rollers are rotatably connected to the top of the fixed tensioning frame through the tensioning guide rod. The three fixed tensioning rollers are balanced with each other, and the fixed tensioning rollers are perpendicular to the front surface of the microwave curing machine. The fixed tensioning rollers are rollingly connected to the upper surface of the base paper.

[0012] Furthermore, a tensioning guide hole is opened on the bottom frame of the floating tensioning frame, and the tensioning guide hole is slidably connected to the tensioning guide rod. A floating tensioning roller is rotatably connected to the top of the floating tensioning frame through a bracket. The floating tensioning roller is rollingly connected to the lower surface of the base paper, and the floating tensioning roller is perpendicular to the front surface of the microwave curing machine.

[0013] Furthermore, the floating pull-up platform is located outside the microwave curing machine, and the floating pull-up platform is slidably connected to the outer shell of the microwave curing machine. Two floating frame guide cylinders are fixedly connected above the floating pull-up platform, and the floating frame guide cylinders are perpendicular to the upper surface of the floating pull-up platform. Two buffer pressure-limiting top springs are fixedly connected to the upper surface of the floating pull-up platform.

[0014] Furthermore, the push rod of the floating adjustment push cylinder is vertically downward, and the lower end of the floating adjustment push cylinder push rod is fixedly connected to the balancing push rod. Two balancing columns are vertically welded below the balancing push rod. The balancing columns are slidably connected to the floating frame guide cylinder, and the balancing push rod is fixedly connected to the upper ends of the two buffer pressure-limiting top springs.

[0015] The present invention provides a base paper impregnation and drying integrated system based on microwave-assisted curing, which has the following beneficial effects: The present invention has the function of tightening the dried base paper during the microwave-assisted curing process. The base paper passing through the microwave curing machine is limited by the cooperation of two limit roller groups inside the microwave curing machine, so that the base paper is kept straight through the microwave curing machine. The lateral deviation of the base paper can be actively corrected to eliminate slight deviation caused by equipment vibration or tension fluctuation. The composite design of the fixed tensioning frame and the floating tensioning frame forms an elastic tension buffer zone to tension the base paper passing through the microwave curing machine and keep the base paper in a straight state, thereby avoiding wrinkles and warping of the base paper due to lack of tension. The floating tensioning frame can be adjusted by the floating adjustment push cylinder according to the tension of the base paper to adjust the tension of the base paper in a floating manner. While avoiding deformation of the base paper due to lack of tension, it also avoids tearing of the base paper due to excessive tension, thereby dynamically balancing the deformation stress of the base paper under thermal expansion, contraction and microwave irradiation. This system can not only adapt to the differentiated tension requirements of base papers of different weights and materials, but also avoid the edge stress concentration problem caused by traditional rigid tensioning, significantly improving the morphological stability of the paper during the curing process. Especially for special base papers with ultra-thin or high fiber content, this design can effectively suppress local wrinkles and warping, ensuring that the surface flatness of the finished product meets high-precision processing requirements.

[0016] In addition, the structure of the base paper impregnation tank has been improved, and the function of circulating glue in the impregnation tank has been added. The improved impregnation tank forms a directional circulating flow field in the tank by optimizing the fluid dynamics structure, so that the contact interface between the glue and the base paper is continuously updated, and the penetration ability of the resin molecules into the fiber pores is enhanced. The circulating glue breaks the concentration boundary layer easily formed in static impregnation through the alternating action of laminar flow and turbulent flow, and promotes the uniform distribution of the glue in the thickness direction of the paper. The integrated circulation filtration system adopts a modular design. Through the continuous operation of the movable filter belt, the impurity particles in the glue are automatically captured, transported and separated. The filter belt separates and intercepts impurities in the glue. The impurity collection cavity at the front end of the separation partition is combined with a detachable residue storage box, which greatly simplifies the cleaning and maintenance process. The continuous purification of the glue not only reduces the impregnation marks caused by impurity deposition, but also extends the service life of the glue, and reduces the production cost and resource waste caused by frequent replacement of the glue. In addition, the closed design of the circulation system effectively reduces solvent volatilization, improves the working environment and meets the requirements of green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2 The structural diagram on the right side of this application is shown; Figure 3 The schematic diagram of the structure inside the base paper impregnation tank of the present application is shown; Figure 4 Shows a schematic diagram of the structure inside the circulating purification pool of the present application; Figure 5 Shows a schematic structural diagram of the diversion and return box of the present application; Figure 6 It shows a schematic structural diagram of the diversion and outflow box of the present application; Figure 7 Shows a schematic structural diagram of the base paper dryer of the present application; Figure 8 Shows a schematic structural diagram of the bottom of the base paper dryer of the present application; Figure 9 Shows a schematic structural diagram of the bottom of the microwave curing machine of the present application; Figure 10 Shows this application Figure 9 A front view schematic diagram of Figure 11 Shows a structural schematic diagram of the tensioning structure of the present application; Figure 12 A schematic structural diagram of the bottom of the tensioning structure of the present application is shown; Figure 13 Shows a schematic structural diagram of the floating tensioning frame of the present application; Figure 14 The figure shows a structural diagram of the present invention when the fixed tensioning frame and the floating tensioning frame are separated.

[0020] Reference numerals: 1. Base paper impregnation tank; 101. Inlet roller; 102. Outlet roller; 103. First guide roller; 104. Second guide roller; 105. Third guide roller; 2. Circulating purification tank; 201. Separation partition; 202. Circulating filter belt; 203. Cleaning drum; 3. Filter drive; 4. Diversion outflow box; 401. Circulating outlet; 402. Diversion pump; 5. Diversion return box; 501. Circulating return outlet; 502. Diversion nozzle; 6. Base paper dryer; 601 , drying conveyor; 7, microwave curing machine; 701, first limiting roller; 702, second limiting roller; 8, fixed tensioning frame; 801, tensioning guide rod; 802, fixed tensioning roller; 9, floating tensioning frame; 901, tensioning guide hole; 902, floating tensioning roller; 903, floating pulling table; 904, floating frame guide cylinder; 905, buffer pressure limiting spring; 10, floating adjustment push cylinder; 1001, balance push rod; 1002, balance plug column; 11, curing machine control panel. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1 to 14 : The present invention proposes an integrated system for impregnation and drying of base paper based on microwave-assisted curing, comprising: a base paper impregnation tank 1, a base paper dryer 6 is provided above the base paper impregnation tank 1, a drying conveyor 601 is installed at the bottom of the base paper dryer 6, the bottom of the drying conveyor 601 is fixedly connected to the base paper impregnation tank 1, a microwave curing machine 7 is docked on the right side of the base paper dryer 6, a mechanically assisted tensioning mechanism is installed inside the microwave curing machine 7, and the mechanically assisted tensioning mechanism consists of a fixed tensioning frame 8 and a floating tensioning frame 9, the fixed tensioning frame 8 is fixedly connected to the inner wall of the microwave curing machine 7, the floating tensioning frame 9 is movably connected to the fixed tensioning frame 8, and the front and rear of the microwave curing machine 7 are respectively connected by screws. A floating adjustment push cylinder 10 is installed on the nail, and a floating pull table 903 is fixedly connected to the front and rear of the floating tensioning frame 9 respectively. The push rod of the floating adjustment push cylinder 10 is connected to the floating pull table 903. A curing machine control panel 11 is provided in front of the microwave curing machine 7. A group of limiting rods are provided on the left and right sides of the microwave curing machine 7 respectively. The limiting rod group consists of a first limiting roller 701 and a second limiting roller 702. The first limiting roller 701 and the second limiting roller 702 are both rotatably connected to the inner wall of the microwave curing machine 7 through bearings. The first limiting roller 701 is connected to the upper surface of the base paper in a rolling manner, and the second limiting roller 702 is connected to the lower surface of the base paper in a rolling manner. A pressure sensor is provided, and the pressure sensor is connected to the curing machine control panel 11 via a data line; after the base paper is impregnated in the base paper impregnation tank 1, it enters the top of the drying conveyor 601, and is conveyed by the drying conveyor 601 to pass through the base paper dryer 6 for drying. The base paper after impregnation is quickly dried by the built-in infrared heater and hot air circulation system of the base paper dryer 6, and enters the microwave curing machine 7 after preliminary curing. A base paper traction mechanism is provided at the output end of the microwave curing machine 7 to assist the base paper inside the microwave curing machine 7 to pass through and maintain a constant speed of pulling the base paper so that the base paper can be cut after curing. During post-processing steps such as curing and winding, the composite design of a fixed tensioning frame 8 and a floating tensioning frame 9 forms an elastic tension buffer zone, tensioning the base paper passing through the microwave curing machine 7 and keeping it straight, preventing wrinkles and warping due to lack of tension. The floating tensioning frame 9 can also be used to adjust the tension on the base paper via a floating adjustment cylinder 10, adjusting the tension of the base paper according to the base paper's tension. This prevents deformation of the base paper due to lack of tension and tearing due to excessive tension, dynamically balancing the deformation stresses of the base paper under thermal expansion, contraction, and microwave irradiation. This system not only adapts to the differentiated tension requirements of base papers of different weights and materials, but also avoids the edge stress concentration problem caused by traditional rigid tensioning, significantly improving the morphological stability of the paper during the curing process. This design can effectively suppress local wrinkles and warping, and improve product yield, especially for ultra-thin or high-fiber specialty base papers.

[0023] In the embodiment of the present disclosure, an inlet roller 101 and an outlet roller 102 are rotatably connected above the opening of the base paper impregnation tank 1, and a first guide roller 103, a second guide roller 104 and a third guide roller 105 are rotatably connected inside the base paper impregnation tank 1 through bearings. The first guide roller 103, the second guide roller 104 and the third guide roller 105 are all rollingly connected to the base paper, and the first guide roller 103, the second guide roller 104 and the third guide roller 105 are all perpendicular to the front surface of the base paper impregnation tank 1; by setting the guide rollers inside the base paper impregnation tank 1, the flow path of the base paper inside the base paper impregnation tank 1 is increased, the circulation length and impregnation time of the base paper inside the base paper impregnation tank 1 are increased, and the utilization efficiency of the base paper impregnation tank 1 is improved.

[0024] In the embodiment of the present disclosure, a circulating purification tank 2 is provided on the right side of the base paper impregnation tank 1 separated by a partition, and a circulating filter belt 202 is installed inside the circulating purification tank 2. The circulating filter belt 202 is densely provided with filter holes, and the circulating filter belt 202 is inclined forward and downward. A separation partition 201 is fixedly connected to the inside of the circulating purification tank 2, and the separation partition 201 is located at the bottom front end of the circulating filter belt 202. A detachable slag storage box is installed in the front cavity of the separation partition 201 for collecting impurities separated in the circulating filter belt 202.

[0025] In the embodiment of the present disclosure, a cleaning roller 203 is rotatably connected inside the circulating purification pool 2, and the cleaning roller 203 is fitted under the front end of the circulating filter belt 202. A filter drive 3 is installed on the right side of the circulating purification pool 2 by screws. The filter drive 3 is connected to and drives the cleaning roller 203 via a rotating shaft, and the cleaning roller 203 is connected to the rotating shaft of the circulating filter belt 202 via a chain drive. Through the linkage between the circulating filter belt 202 and the cleaning roller 203, the circulating filter belt 202 drives the cleaning roller 203 to roll at the end of the circulating filter belt 202 while it is running, and the outer surface of the circulating filter belt 202 is scraped by the cleaning roller 203 to assist in removing impurities on the outer surface of the circulating filter belt 202, so that the impurities fall into the detachable slag storage box in front of the separation partition 201 for storage, which is convenient for cleaning impurities.

[0026] In the embodiment of the present disclosure, the fixed tensioning frame 8 is vertically welded with a tensioning guide rod 801, and three fixed tensioning rollers 802 are rotatably connected to the top of the fixed tensioning frame 8 through the tensioning guide rod 801. The three fixed tensioning rollers 802 are balanced with each other, and the fixed tensioning rollers 802 are perpendicular to the front surface of the microwave curing machine 7. The fixed tensioning rollers 802 are rollingly connected to the upper surface of the base paper; the bottom frame of the floating tensioning frame 9 is provided with a tensioning guide hole 901, and the tensioning guide hole 901 is slidably connected to the tensioning guide rod 801. The top of the floating tensioning frame 9 The floating tensioning roller 902 is rotatably connected to the support, and the floating tensioning roller 902 is rollingly connected to the lower surface of the base paper. The floating tensioning roller 902 is perpendicular to the front surface of the microwave curing machine 7; the floating pulling platform 903 is located outside the microwave curing machine 7, and the floating pulling platform 903 is slidingly connected to the outer shell of the microwave curing machine 7. Two floating frame guide cylinders 904 are fixedly connected to the top of the floating pulling platform 903. The floating frame guide cylinders 904 are perpendicular to the upper surface of the floating pulling platform 903. The upper surface of the floating pulling platform 903 is fixedly connected to two buffer limit Pressure top spring 905; Under normal circumstances, the floating pull table 903 is pulled by the floating adjustment push cylinder 10, and is connected to the balance push rod 1001 through the buffer pressure limiting top spring 905 to maintain the position of the floating tensioning frame 9. In the process of the base paper passing through the microwave curing machine 7, the pressure in the base paper is detected by the pressure sensor built into the second limiting roller 702, and the tension of the base paper is judged and transmitted to the curing machine control panel 11 for reality. If the tension is too small, it is easy to cause the base paper to curl and deform during the curing process, and it is necessary to To increase the tension of the base paper, the floating pulling platform 903 is pulled upward by the floating adjustment push cylinder 10, so that the floating tensioning frame 9 moves upward, and the floating tensioning roller 902 moves upward, pushing the base paper upward, thereby increasing the tension in the base paper. On the contrary, if the tension of the base paper is too high, the floating adjustment push cylinder 10 can be controlled to push the floating pulling platform 903 downward, so that the floating tensioning roller 902 moves downward, reducing the pressure on the base paper, reducing the tension in the base paper, and avoiding the phenomenon of base paper tearing due to excessive tension.

[0027] In the disclosed embodiment, the push rod of the floating adjustment push cylinder 10 is vertically downward, and the lower end of the push rod of the floating adjustment push cylinder 10 is fixedly connected to the balancing push rod 1001. Two balancing columns 1002 are vertically welded below the balancing push rod 1001. The balancing columns 1002 are slidably connected to the floating frame guide cylinder 904, and the balancing push rod 1001 is fixedly connected to the upper ends of two buffer pressure-limiting springs 905; through the setting of the buffer pressure-limiting springs 905, the floating tensioning frame 9 can automatically adjust the floating tensioning frame 9 to float up and down under the action of the tightness of the original paper, which plays a buffering role and avoids the situation where the original paper is torn due to excessive fluctuations in the tensioning force.

[0028] Example 2. On the basis of Example 1, a diversion outflow box 4 and a diversion return box 5 are fixedly connected to the inside of the base paper impregnation tank 1. The bottom of the diversion outflow box 4 is connected to the diversion pump 402 through a pipeline. The input end of the diversion pump 402 is connected to the bottom of the circulation purification tank 2 through a pipeline. A circulation outlet 401 is provided at the rear of the diversion outflow box 4. A diversion nozzle 502 is installed on the top of the side of the diversion return box 5 through a pipeline. The diversion nozzle 502 is located at the rear side of the circulation purification tank 2, and the diversion nozzle 502 is located above the circulation filter belt 202. A circulation return port 501 is provided in front of the diversion return box 5. With the cooperation of the diversion outflow box 4 and the diversion return box 5, the filtered glue at the bottom of the circulation purification tank 2 is transported into the diversion pump 402. The diversion flow out of the box 4 and flows into the base paper impregnation tank 1 through the circulation outlet 401. After the glue enters the base paper impregnation tank 1, it enters the diversion reflux box 5 through the circulation reflux port 501 under pressure, and enters the diversion nozzle 502. It is filtered by the mobile phase circulation filter belt 202 at the bottom opening of the diversion nozzle 502, thereby realizing the whole process of glue circulation. The improved impregnation tank forms a directional circulation flow field in the tank by optimizing the fluid dynamics structure, so that the contact interface between the glue and the base paper is continuously updated, and the penetration ability of the resin molecules into the fiber pores is enhanced. The circulating glue breaks the concentration boundary layer that is easily formed in static impregnation through the alternating action of laminar flow and turbulent flow, and promotes the uniform distribution of the glue in the thickness direction of the paper.

[0029] The working principle of this embodiment is as follows: first, the base paper is passed through the base paper impregnation tank 1, the base paper dryer 6 and the microwave curing machine 7 through the pulling, unwinding and conveying mechanism of the base paper, and an auxiliary traction mechanism for the base paper discharge is set at the outlet position of the right end of the microwave curing machine 7. When the base paper passes through the base paper impregnation tank 1, it is impregnated with the glue inside the base paper impregnation tank 1. At the same time, the glue is guided to circulate through the diversion pump 402, the diversion outflow box 4, and the diversion return box 5, so that the contact interface between the glue and the base paper is continuously updated, and the penetration ability of the resin molecules into the fiber pores is strengthened. The circulating glue breaks the concentration boundary layer that is easily formed in static impregnation through the alternating action of laminar flow and turbulent flow, and promotes the glue in the thickness direction of the paper. The base paper is evenly distributed. After being impregnated, it is transported to the base paper dryer 6 through the drying conveyor 601. In the base paper dryer 6, hot air circulation and infrared heating are used to accelerate the drying of the impregnated base paper. The dried base paper enters the microwave curing machine 7. The microwave curing machine 7 cures the glue in the base paper. In the process of the base paper passing through the microwave curing machine 7, the pressure in the base paper is detected by the pressure sensor built into the second limiting roller 702, and the tension of the base paper is judged and transmitted to the curing machine control panel 11 for display. If the tension is too small, it is easy to cause the base paper to curl and deform during the curing process. It is necessary to increase the tension of the base paper. At this time, the floating adjustment cylinder 10 is used to adjust the pressure. The floating pulling platform 903 is pulled upward, so that the floating tensioning frame 9 moves upward, the floating tensioning roller 902 moves upward, and the base paper is pushed upward, thereby increasing the tension in the base paper. On the contrary, if the tension of the base paper is too high, the floating adjustment push cylinder 10 can be controlled to push the floating pulling platform 903 downward, so that the floating tensioning roller 902 moves downward, reducing the pressure on the base paper, reducing the tension in the base paper, and avoiding the phenomenon of base paper tearing due to excessive tension; under the cooperation of the diversion outflow box 4 and the diversion return box 5, the filtered glue at the bottom of the circulating purification pool 2 is transported into the inside of the diversion outflow box 4 through the diversion pump 402, and flows into the inside of the base paper impregnation pool 1 through the circulating outflow outlet 401, and the glue enters the base paper impregnation pool 1. After entering the paper impregnation tank 1, the water enters the guide reflux box 5 through the circulation reflux port 501 under pressure, and enters the diversion nozzle 502. The mobile phase circulates through the filter belt 202 at the bottom opening of the diversion nozzle 502 for filtration. The circulation filter belt 202 is linked with the cleaning drum 203, so that the circulation filter belt 202 drives the cleaning drum 203 to roll at the end of the circulation filter belt 202 while it is running. The cleaning drum 203 scrapes the outer surface of the circulation filter belt 202 to assist in removing impurities on the outer surface of the circulation filter belt 202, so that the impurities fall into the detachable slag storage box in front of the separation partition 201 for storage, which is convenient for cleaning impurities and improves the maintenance efficiency of the base paper impregnation system.

[0030] In this article, there are several points to note: 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0031] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0032] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. Integrated system for impregnation and drying of base paper based on microwave-assisted curing, including: A base paper impregnation tank (1) is characterized in that a base paper dryer (6) is provided above the base paper impregnation tank (1), a drying conveyor (601) is installed at the bottom of the base paper dryer (6), the bottom of the drying conveyor (601) is fixedly connected to the base paper impregnation tank (1), a microwave curing machine (7) is docked on the right side of the base paper dryer (6), a mechanical auxiliary tensioning mechanism is installed inside the microwave curing machine (7), the mechanical auxiliary tensioning mechanism consists of a fixed tensioning frame (8) and a floating tensioning frame (9), the fixed tensioning frame (8) is fixedly connected to the inner wall of the microwave curing machine (7), the floating tensioning frame (9) is movably connected to the fixed tensioning frame (8), a floating adjustment push cylinder (10) is respectively installed at the front and rear of the microwave curing machine (7) by screws, the floating tensioning frame A floating pull-up platform (903) is fixedly connected to the front and rear of (9), and the push rod of the floating adjustment push cylinder (10) is connected to the floating pull-up platform (903). A curing machine control panel (11) is provided in front of the microwave curing machine (7). A group of limiting rollers are provided on the left and right sides of the interior of the microwave curing machine (7), respectively. The limiting roller group consists of a first limiting roller (701) and a second limiting roller (702). The first limiting roller (701) and the second limiting roller (702) are both rotatably connected to the inner wall of the microwave curing machine (7) through bearings. The first limiting roller (701) is connected to the upper surface of the base paper in a rolling manner, and the second limiting roller (702) is connected to the lower surface of the base paper in a rolling manner. The second limiting roller (702) is equipped with a built-in pressure sensor, and the pressure sensor is connected to the curing machine control panel (11) through a data line.

2. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 1, characterized in that: An introduction roller (101) and an outlet roller (102) are rotatably connected above the opening of the base paper immersion tank (1), and a first guide roller (103), a second guide roller (104), and a third guide roller (105) are rotatably connected inside the base paper immersion tank (1) via bearings. The first guide roller (103), the second guide roller (104), and the third guide roller (105) are all in rolling connection with the base paper, and the first guide roller (103), the second guide roller (104), and the third guide roller (105) are all perpendicular to the front surface of the base paper immersion tank (1).

3. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 2, characterized in that: A circulating purification tank (2) is provided on the right side of the base paper impregnation tank (1) separated by a partition. A circulating filter belt (202) is installed inside the circulating purification tank (2). The circulating filter belt (202) is arranged to be inclined forward and downward. The circulating filter belt (202) is densely provided with filter holes. A separation partition (201) is fixedly connected inside the circulating purification tank (2). The separation partition (201) is located at the front bottom of the circulating filter belt (202).

4. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 3, characterized in that: A cleaning roller (203) is rotatably connected inside the circulation purification tank (2), and the cleaning roller (203) is in contact with the lower front end of the circulation filter belt (202). A filter drive member (3) is mounted on the right side of the circulation purification tank (2) via screws, and the filter drive member (3) is connected to and drives the cleaning roller (203) via a rotating shaft. The cleaning roller (203) is connected to the rotating shaft of the circulation filter belt (202) via a chain drive.

5. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 4, characterized in that: A diversion outflow box (4) and a diversion return box (5) are fixedly connected inside the base paper impregnation tank (1); the bottom of the diversion outflow box (4) is connected to a diversion pump (402) via a pipeline; the input end of the diversion pump (402) is connected to the bottom of the circulation purification tank (2) via a pipeline; and a circulation outlet (401) is provided at the rear of the diversion outflow box (4).

6. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 5, characterized in that: A diversion nozzle (502) is installed on the top of the side of the diversion return box (5) through a pipeline. The diversion nozzle (502) is located at the rear side of the circulation purification tank (2) and the diversion nozzle (502) is located above the circulation filter belt (202). A circulation return port (501) is opened in front of the diversion return box (5).

7. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 1, characterized in that: The fixed tensioning frame (8) is vertically welded with a tensioning guide rod (801), and three fixed tensioning rollers (802) are rotatably connected to the upper portion of the fixed tensioning frame (8) through the tensioning guide rod (801). The three fixed tensioning rollers (802) are mutually balanced, and the fixed tensioning rollers (802) are perpendicular to the front surface of the microwave curing machine (7). The fixed tensioning rollers (802) are rollingly connected to the upper surface of the base paper.

8. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 7, characterized in that: The bottom frame of the floating tensioning frame (9) is provided with a tensioning guide hole (901), the tensioning guide hole (901) is slidably connected to the tensioning guide rod (801), and the floating tensioning frame (9) is rotatably connected to a floating tensioning roller (902) on the top through a bracket support, the floating tensioning roller (902) is rollingly connected to the lower surface of the base paper, and the floating tensioning roller (902) is perpendicular to the front surface of the microwave curing machine (7).

9. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 8, characterized in that: The floating pull-up platform (903) is located outside the microwave curing machine (7), and the floating pull-up platform (903) is slidably connected to the outer shell of the microwave curing machine (7). Two floating frame guide cylinders (904) are fixedly connected above the floating pull-up platform (903), and the floating frame guide cylinders (904) are perpendicular to the upper surface of the floating pull-up platform (903). Two buffer pressure-limiting top springs (905) are fixedly connected to the upper surface of the floating pull-up platform (903).

10. The base paper impregnation and drying integrated system based on microwave-assisted curing according to claim 9, characterized in that: The push rod of the floating adjustment push cylinder (10) is vertically downward, and the lower end of the push rod of the floating adjustment push cylinder (10) is fixedly connected to a balancing push rod (1001), and two balancing plugs (1002) are vertically welded below the balancing push rod (1001), and the balancing plugs (1002) are slidably connected to the floating frame guide cylinder (904), and the balancing push rod (1001) is fixedly connected to the upper ends of two buffer pressure-limiting top springs (905).

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