A roll-to-roll glue dipping and roller pressing integrated equipment

Abstract

The present invention discloses a roll-to-roll glue dipping and rolling integrated equipment, which relates to the technical field of fuel cell production, and includes an unwinding system, a glue dipping system, a drying system, a continuous rolling system and a winding system connected in sequence; wherein the unwinding system is used to unfold the carbon fiber paper base paper coil and output the material strip; the glue dipping system is used to dip the material strip into glue slurry; the drying system is used to dry the glue slurry attached to the material strip; the continuous rolling system is used to adjust the thickness of the glue solidified on the material strip; the winding system is used to rewind the material strip to form a carbon fiber paper glue-carrying coil. The present invention can not only continuously perform glue dipping, drying and hot rolling processing on the carbon fiber paper base paper coil, but also make the glue uniformly distributed on the material strip and reduce the defects of the glue surface layer, which can effectively improve the overall production efficiency and production quality of carbon fiber paper.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cell production, and in particular to a roll-to-roll glue dipping and rolling integrated equipment. Background Art

[0002] Proton exchange membrane fuel cells have the advantages of small size and weight, high energy density, fast startup speed, safe and reliable operation, etc. They are the most promising type of fuel cells. Proton exchange membrane fuel cells are mainly composed of proton membrane, catalyst layer, gas diffusion layer and bipolar plate. Among them, the gas diffusion layer plays the role of supporting the catalyst layer and stabilizing the electrode structure, and also provides gas channels, electron channels and drainage channels for electrode reactions.

[0003] Carbon fiber paper is a material widely used in gas diffusion layers. It uses chopped carbon fiber as the main raw material and is manufactured through processes such as preforming, impregnation, hot pressing, carbonization and graphitization. It has a uniform porous thin layer structure and excellent electrical conductivity, chemical stability and thermal stability.

[0004] Traditional carbon fiber paper is mainly processed by dipping glue and hot pressing one by one in the form of sheet-like base paper materials (sheets), resulting in relatively low overall production efficiency of carbon fiber paper. Therefore, some researchers connected the unwinding mechanism, dipping tank, drying mechanism, rolling mechanism and winding mechanism to form a coil production system to achieve efficient and continuous processing of the rolled base paper materials of carbon fiber paper (carbon fiber paper base paper coils). However, the coil production system is not perfect, which easily leads to uneven distribution of the adhesive attached to the carbon fiber paper and many surface defects of the adhesive, which seriously affects the production quality of carbon fiber paper. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art. The present invention provides a roll-to-roll glue dipping and rolling integrated equipment. Through the cooperation of an ultrasonic water tank, a liquid control mechanism, a bubble isolation plate, a vertical oven, a horizontal oven, a rubber-coated roller and a heating roller, not only can the carbon fiber paper base paper coil be continuously dipped in glue, dried and hot rolled, but the glue can also be evenly distributed on the material belt and the defects of the surface layer of the glue can be reduced, which can effectively improve the overall production efficiency and production quality of carbon fiber paper.

[0006] The present invention provides a roll-to-roll glue dipping and rolling integrated equipment, comprising an unwinding system, a glue dipping system, a drying system, a continuous rolling system and a winding system connected in sequence; wherein the unwinding system is used to unwind a carbon fiber paper base paper roll and output a material strip; the glue dipping system is used to dip the material strip into glue slurry; the drying system is used to dry the glue slurry attached to the material strip; the continuous rolling system is used to adjust the thickness of the glue solidified on the material strip; the winding system is used to rewind the material strip to form a carbon fiber paper glue-carrying roll;

[0007] The dipping system includes an ultrasonic water tank, and a first guide roller and a liquid control mechanism arranged above the ultrasonic water tank, wherein the first guide roller is located at the material belt input side of the ultrasonic water tank, and the first guide roller is used to receive the material belt output by the unwinding system; the liquid control mechanism is located at the material belt output side of the ultrasonic water tank, and the liquid control mechanism is used to remove excess glue slurry on the material belt;

[0008] The ultrasonic water tank is used to hold the adhesive slurry; an ultrasonic vibration plate is provided at the bottom of the ultrasonic water tank, and the ultrasonic vibration plate is used to disperse the adhesive slurry; a liquid inlet and a liquid outlet are provided at the bottom of the ultrasonic water tank, the liquid inlet is located at the material belt input side of the ultrasonic water tank, and the liquid outlet is located at the material belt output side of the ultrasonic water tank; a bubble isolation plate is provided inside the ultrasonic water tank, and a holding space is formed between the bubble isolation plate and the inner wall of the ultrasonic water tank, and the liquid inlet is located in the holding space;

[0009] The drying system comprises at least one vertical oven and a plurality of horizontal ovens, wherein the at least one vertical oven is located at the front end of the plurality of horizontal ovens, the vertical oven is used to vertically pass through the material belt and dry, and the horizontal oven is used to horizontally pass through the material belt and dry;

[0010] The continuous rolling system includes a rolling frame, and the rolling frame is provided with at least two rolling assemblies in sequence along the conveying direction of the material strip. Any of the rolling assemblies includes a rubber-coated roller and a heating roller arranged opposite to each other, and a rolling gap is formed between the rubber-coated roller and the heating roller. The rolling gaps of all the rolling assemblies constitute a continuous rolling path, and the continuous rolling path is used to pass the material strip.

[0011] Specifically, the inside of the ultrasonic water tank is provided with a second guide roller, a power roller and a third guide roller in sequence along the conveying direction of the material belt, and the material belt is passed through and wound from under the second guide roller, over the power roller and under the third guide roller in sequence.

[0012] Specifically, the bottom of the ultrasonic water tank gradually slopes downward from the material belt input side to the material belt output side.

[0013] Specifically, the ultrasonic water tank is connected to a liquid storage tank, which is used to store glue slurry; a liquid level detection sensor and a concentration detection sensor are arranged inside the ultrasonic water tank, and the liquid storage tank automatically replenishes the glue slurry into the ultrasonic water tank based on the feedback of the liquid level detection sensor and the concentration detection sensor.

[0014] Specifically, the liquid control mechanism includes a liquid control frame, and the liquid control frame is sequentially provided with a scraper group and a metering roller group along the conveying direction of the material belt, and the scraper group includes a first scraper and a second scraper, and a scraper gap is formed between the first scraper and the second scraper, and the scraper gap is used to pass the material belt;

[0015] The metering roller group comprises a first metering roller and a second metering roller, a liquid squeezing gap is formed between the first metering roller and the second metering roller, and the liquid squeezing gap is used to pass the material belt;

[0016] A quantitative cylinder and a quantitative base are arranged on the liquid control frame, the output end of the quantitative cylinder points to the quantitative base, and the quantitative base is driven by the quantitative cylinder to move on the liquid control frame; a first pressure sensor is arranged on the output end of the quantitative cylinder; both ends of the first quantitative roller are rotatably arranged on the liquid control frame, and both ends of the second quantitative roller are rotatably arranged on the corresponding quantitative base, and the liquid extrusion gap is driven by the quantitative cylinder to become smaller.

[0017] Specifically, the liquid control frame is provided with a first pneumatic scraper and a second pneumatic scraper, the first pneumatic scraper is used to remove the residual slurry on the surface of the first quantitative roller, and the second pneumatic scraper is used to remove the residual slurry on the surface of the second quantitative roller;

[0018] The first pneumatic scraper includes a first push cylinder fixedly arranged on the liquid control frame and a third scraper fixedly arranged on the output end of the first push cylinder, and the third scraper is driven by the first push cylinder to approach or move away from the first metering roller;

[0019] The second pneumatic scraper includes a second pushing cylinder fixedly arranged on the liquid control frame and a fourth scraper fixedly arranged on the output end of the second pushing cylinder. The fourth scraper is driven by the second pushing cylinder to approach or move away from the second metering roller.

[0020] Specifically, both ends of the rubber-coated roller are rotatably set on a sliding plate, and the sliding plate is slidably set on the rolling frame; both ends of the heating roller are rotatably set on a fixed plate, and the fixed plate is fixedly set on the rolling frame; any of the sliding plates is connected to a rolling actuator, and the sliding plate is driven by the rolling actuator to move on the rolling frame; the rolling gap is driven by the rolling actuator to increase or decrease; the sliding plate and the rolling actuator are connected based on a second pressure sensor.

[0021] Specifically, a plurality of first floating rollers are provided on one side of the continuous rolling path, and the plurality of first floating rollers are used to adjust the tension of the material strip passing through the continuous rolling path; and / or

[0022] A plurality of second floating rollers are arranged on the other side of the continuous rolling path, and the plurality of second floating rollers are used to adjust the tension of the material strip passing through the continuous rolling path.

[0023] Specifically, a belt connecting device is provided on the roller frame, and the belt connecting device includes a plurality of sprockets rotatably arranged on the roller frame, and chains passed through the sprockets, the chains are connected end to end to form a chain loop, part of the chain loop is located beside the continuous rolling path, and the chain loop is used to lead the head end of the material belt out along the continuous rolling path.

[0024] Specifically, at least one hot roller scraper is arranged beside any of the heating rollers, and the hot roller scraper is used to remove impurities on the surface of the heating roller;

[0025] A receiving basin is arranged below any of the hot roller scrapers, and the receiving basin is used to receive impurities scraped off by the hot roller scraper.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The roll-to-roll glue dipping and rolling integrated equipment of the present invention is sequentially connected with an unwinding system, a glue dipping system, a drying system, a continuous rolling system and a winding system, wherein the glue dipping system includes an ultrasonic water tank, a liquid control mechanism and a bubble isolation plate, etc. The ultrasonic water tank can effectively disperse the glue slurry, which is conducive to making the glue slurry evenly attached to the material belt; the liquid control mechanism can remove the excess glue slurry on the material belt to prevent the excess glue from accumulating on the material belt and affecting the surface morphology and distribution uniformity of the glue; the bubble isolation plate can intercept the bubbles generated when the glue slurry is injected into the liquid inlet in the accommodation space, thereby preventing the bubbles from adhering to the material belt, and can effectively reduce the defects on the surface of the glue;

[0028] The drying system includes a vertical oven and a horizontal oven. Through the cooperation of the two, the rubber material attached to the material belt can be evenly distributed during the drying process to avoid uneven rubber material loading on the front and back sides of the material belt.

[0029] The continuous rolling system includes at least two rolling assemblies, and any rolling assembly includes a rubber-coated roller and a heating roller, which can not only adjust the thickness of the rubber cured on the material belt, but also improve the thickness uniformity of the rubber and improve the surface morphology of the rubber;

[0030] In summary, the present invention, through the cooperation of an ultrasonic water tank, a liquid control mechanism, a bubble isolation plate, a vertical oven, a horizontal oven, a rubber-coated roller and a heating roller, can not only continuously perform rubber dipping, drying and hot rolling processing on the carbon fiber paper base paper coil, but also make the rubber evenly distributed on the material belt and reduce the defects of the rubber surface layer, and also lay the foundation for the subsequent high-temperature carbonization and high-temperature graphitization of the coil, thereby effectively improving the overall production efficiency and production quality of the carbon fiber paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 Schematic diagram of the overall structure of a roll-to-roll glue dipping and rolling integrated equipment according to an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of the cross-sectional structure of the dipping system in an embodiment of the present invention;

[0034] Figure 3 is a schematic cross-sectional structure diagram of a liquid control mechanism in an embodiment of the present invention;

[0035] Figure 4 is a schematic diagram of the overall structure of a drying system in an embodiment of the present invention;

[0036] Figure 5 is a schematic cross-sectional structure diagram of a continuous roller pressing system in an embodiment of the present invention;

[0037] Figure 6 is a schematic diagram of the overall structure of a rolling assembly in an embodiment of the present invention;

[0038] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0039] In the attached drawings, 1, unwinding system; 2, dipping system; 210, ultrasonic water tank; 211, second guide roller; 212, power roller; 213, third guide roller; 214, liquid inlet; 215, liquid outlet; 216, ultrasonic vibration plate; 217, bubble isolation plate; 218, temperature control coil; 220, first guide roller; 230, liquid control mechanism; 231, liquid control frame; 232, scraper group; 2321, first scraper; 2322, second scraper; 233, quantitative roller group; 2331, first quantitative roller; 2332, second quantitative roller; 234, quantitative cylinder; 235, quantitative base; 236, first pressure sensor; 237, first pneumatic scraper; 2371, first push cylinder; 2372, third scraper; 238, second pneumatic scraper; 2381. second push cylinder; 2382. fourth scraper; 240. liquid storage tank; 3. drying system; 310. vertical oven; 320. horizontal oven; 4. continuous rolling system; 41. rolling frame; 410. rolling assembly; 411. rubber-coated roller; 412. heating roller; 413. sliding plate; 414. fixed plate; 415. rolling actuator; 416. second pressure sensor; 420. gap adjustment mechanism; 421. gap adjustment bracket; 422. linear guide; 423. wedge block; 424. screw; 425. wedge seat; 431. first floating roller; 432. second floating roller; 440. belt connecting device; 441. sprocket; 442. chain; 451. hot roller scraper; 452. receiving basin; 5. winding system; 6. deviation correction and traction system. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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 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.

[0041] The present invention provides a roll-to-roll glue dipping and rolling integrated equipment. Figure 1 The overall structural schematic diagram of the roll-to-roll glue dipping and rolling integrated equipment in an embodiment of the present invention is shown, including an unwinding system 1, a glue dipping system 2, a drying system 3, a continuous rolling system 4 and a winding system 5 connected in sequence; wherein the unwinding system 1 is used to unwind the carbon fiber paper base paper roll and output the material strip; the glue dipping system 2 is used to dip the material strip into glue slurry; the drying system 3 is used to dry the glue slurry attached to the material strip; the continuous rolling system 4 is used to adjust the thickness of the glue solidified on the material strip; the winding system 5 is used to rewind the material strip to form a carbon fiber paper glue-loaded roll.

[0042] The roll-to-roll glue dipping and rolling integrated equipment of the present invention can continuously perform glue dipping, drying and rolling processing on the rolled base paper material (roll material) of carbon fiber paper through the unwinding system 1, the glue dipping system 2, the drying system 3, the continuous rolling system 4 and the winding system 5 which are connected in sequence. The production efficiency is high and the foundation is also laid for the subsequent high-temperature carbonization and high-temperature graphitization of the roll material, thereby effectively improving the overall production efficiency of the carbon fiber paper.

[0043] In some specific embodiments, the unwinding system 1 includes an unwinding base and an unwinding frame movably arranged on the unwinding base, and the unwinding frame is provided with an unwinding servo motor, an unwinding shaft, an unwinding tension detection roller and an unwinding floating roller, the unwinding shaft is used to install the first coil, and the unwinding shaft is driven by the unwinding servo motor to unfold the first coil; the unwinding tension detection roller and the unwinding floating roller are used to pass through the material belt, the unwinding tension detection roller is used to detect the tension of the material belt, the unwinding floating roller is used to adjust the tension of the material belt, the unwinding floating roller adjusts its position according to the tension feedback of the unwinding tension detection roller, and the unwinding servo motor adjusts its speed according to the tension feedback of the unwinding tension detection roller. The unwinding system 1 adopts a double closed-loop control mode composed of an unwinding servo motor, an unwinding tension detection roller and an unwinding floating roller, so that when the roll-to-roll dipping and roller-pressing integrated equipment is started or stopped, the tension stability of the material belt can be better guaranteed, thereby preventing the material belt from breaking due to uneven force.

[0044] Specifically, the unwinding base is provided with an unwinding correction sensor and an unwinding correction actuator. The unwinding correction sensor is used to detect the edge position of the material strip, and the unwinding correction actuator adjusts the overall position of the unwinding frame according to the feedback of the unwinding correction sensor, so that the unwinding system 1 can have an automatic correction function.

[0045] Figure 2The cross-sectional structure diagram of the dipping system in the embodiment of the present invention is shown, the dipping system 2 includes an ultrasonic water tank 210, and a first guide roller 220 and a liquid control mechanism 230 arranged above the ultrasonic water tank 210, the first guide roller 220 is located at the material belt input side of the ultrasonic water tank 210, and the first guide roller 220 is used to receive the material belt output by the unwinding system 1; the liquid control mechanism 230 is located at the material belt output side of the ultrasonic water tank 210, and the liquid control mechanism 230 is used to remove excess glue slurry on the material belt to avoid The accumulation of excess rubber on the material belt affects the surface morphology and distribution uniformity of the rubber; the ultrasonic water tank 210 is used to hold the rubber slurry, and the interior of the ultrasonic water tank 210 is sequentially provided with a second guide roller 211, a power roller 212 and a third guide roller 213 along the conveying direction of the material belt. The material belt is sequentially passed through the bottom of the second guide roller 211, the top of the power roller 212 and the bottom of the third guide roller 213, so that the material belt can be fully immersed in the rubber slurry and can be quickly infiltrated by the rubber slurry.

[0046] See also Figure 2 The bottom of the ultrasonic water tank 210 is provided with a liquid inlet 214 and a liquid outlet 215. The liquid inlet 214 is located at the material belt input side of the ultrasonic water tank 210, and the liquid outlet 215 is located at the material belt output side of the ultrasonic water tank 210. The bottom of the ultrasonic water tank 210 gradually tilts downward from the material belt input side to the material belt output side. The inclined bottom design is convenient for discharging the rubber slurry after production, and is also convenient for cleaning the ultrasonic water tank 210 after production.

[0047] See also Figure 2 An ultrasonic vibration plate 216 is disposed at the bottom of the ultrasonic water tank 210. The ultrasonic vibration plate 216 is used to disperse the adhesive slurry to ensure that the adhesive slurry system is uniform, so that the adhesive slurry carried by the material belt is more uniform.

[0048] In some specific embodiments, see Figure 2 A bubble isolation plate 217 is provided inside the ultrasonic water tank 210, and a containing space is formed between the bubble isolation plate 217 and the inner wall of the ultrasonic water tank 210, and the liquid inlet 214 is located in the containing space; the bubble isolation plate 217 has mesh holes, which can not only allow the rubber slurry to pass through, but also intercept the bubbles generated when the rubber slurry is injected into the liquid inlet 214 in the containing space, thereby preventing the bubbles from adhering to the material belt, which can effectively reduce the defects on the rubber surface.

[0049] In some specific embodiments, see Figure 2A temperature control coil 218 is disposed at the bottom of the ultrasonic water tank 210. The temperature control coil 218 is used to control the temperature of the adhesive slurry, so that the temperature of the adhesive slurry can be adjusted according to specific needs.

[0050] In some specific embodiments, see Figure 2 The ultrasonic water tank 210 is connected to a liquid storage tank 240, and the liquid storage tank 240 is used to store glue slurry; a liquid level detection sensor and a concentration detection sensor are arranged inside the ultrasonic water tank 210, and the liquid storage tank 240 automatically replenishes the glue slurry into the ultrasonic water tank 210 according to the feedback of the liquid level detection sensor and the concentration detection sensor, which has a high degree of automation and is conducive to improving production efficiency.

[0051] In some specific embodiments, the ultrasonic water tank 210 is provided with a circulating filtration device, which is used to remove material strip debris in the adhesive slurry, thereby preventing fiber fluff of the base paper material from contaminating the adhesive slurry, thereby facilitating ensuring the adhesive impregnation effect of the material strip and reducing defects on the surface of the material strip.

[0052] Figure 3 A schematic cross-sectional structure diagram of a liquid control mechanism in an embodiment of the present invention is shown, wherein the liquid control mechanism 230 comprises a liquid control frame 231, wherein the liquid control frame 231 is provided with a scraper blade group 232 and a metering roller group 233 in sequence along the conveying direction of the material belt, wherein the scraper blade group 232 comprises a first scraper 2321 and a second scraper 2322, wherein a scraper gap is formed between the first scraper 2321 and the second scraper 2322, and wherein the scraper gap is used for passing the material belt; when the material belt loaded with adhesive slurry passes through the scraper gap, excess adhesive slurry on both sides of the material belt will be removed by the first scraper 2321 and the second scraper 2322.

[0053] See also Figure 3 The metering roller group 233 includes a first metering roller 2331 and a second metering roller 2332. A liquid squeezing gap is formed between the first metering roller 2331 and the second metering roller 2332, and the liquid squeezing gap is used to pass the material belt; when the material belt loaded with rubber slurry passes through the liquid squeezing gap, the first metering roller 2331 and the second metering roller 2332 will squeeze the material belt to squeeze out excess rubber slurry and control the liquid carrying rate of the material belt within a reasonable range.

[0054] See also Figure 3The liquid control frame 231 is provided with a quantitative cylinder 234 and a quantitative base 235. The output end of the quantitative cylinder 234 points to the quantitative base 235. The quantitative base 235 is driven by the quantitative cylinder 234 to move on the liquid control frame 231. The output end of the quantitative cylinder 234 is provided with a first pressure sensor 236. The two ends of the first quantitative roller 2331 are rotatably arranged on the liquid control frame 231, and the two ends of the second quantitative roller 2332 are rotatably arranged on the corresponding quantitative base 235. The extrusion gap is driven by the quantitative cylinder 234 to become smaller. The quantitative cylinder 234 is equipped with a precision electrical proportional valve to ensure that it outputs uniform pressure to the quantitative base 235, so that the second quantitative roller 2332 can roll the material strip smoothly, ensuring the stability of the dipping amount of the material strip.

[0055] In some specific embodiments, see Figure 3 The liquid control frame 231 is provided with a first pneumatic scraper 237 and a second pneumatic scraper 238. The first pneumatic scraper 237 is used to remove the residual slurry on the surface of the first quantitative roller 2331, and the second pneumatic scraper 238 is used to remove the residual slurry on the surface of the second quantitative roller 2332, which is beneficial to ensure the working effect of the quantitative roller group 233; the first pneumatic scraper 237 includes a first pushing cylinder 2371 fixedly arranged on the liquid control frame 231 and a third scraper 2372 fixedly arranged on the output end of the first pushing cylinder 2371. The third scraper 2372 is driven by the first pushing cylinder 2371 to approach or move away from the first quantitative roller 2331, so as to ensure the working effect of the quantitative roller group 233. The third scraper 2372 is used to adjust the distance between the third scraper 2372 and the surface of the first metering roller 2331, so as to ensure that the third scraper 2372 can fully remove the residual slurry on the surface of the first metering roller 2331; the second pneumatic scraper 238 includes a second pushing cylinder 2381 fixedly arranged on the liquid control frame 231 and a fourth scraper 2382 fixedly arranged on the output end of the second pushing cylinder 2381, and the fourth scraper 2382 is driven by the second pushing cylinder 2381 to approach or move away from the second metering roller 2332, so as to facilitate the adjustment of the distance between the fourth scraper 2382 and the surface of the second metering roller 2332, so as to ensure that the fourth scraper 2382 can fully remove the residual slurry on the surface of the second metering roller 2332.

[0056] Figure 4The overall structural diagram of the drying system in the embodiment of the present invention is shown, the drying system 3 includes at least one vertical oven 310 and multiple horizontal ovens 320, the at least one vertical oven 310 is located at the front end of the multiple horizontal ovens 320, the vertical oven 310 is used to vertically pass through the material belt and dry it, and the horizontal oven 320 is used to horizontally pass through the material belt and dry it. Through the cooperation of the vertical oven 310 and the horizontal oven 320, it can be ensured that the rubber attached to the material belt is evenly distributed during the drying process, avoiding the situation where the rubber load on the front and back sides of the material belt is uneven.

[0057] For details, please refer to Figure 4 The drying system 3 includes a first vertical oven, a first horizontal oven, a second horizontal oven, a third horizontal oven and a fourth horizontal oven connected in sequence along the conveying direction of the material belt, so that the material belt is first dried vertically in the first vertical oven, and then dried horizontally in the four horizontal ovens 320 in sequence, ensuring that the rubber load on both sides of the material belt is uniform during the drying process.

[0058] Figure 5 The cross-sectional structure diagram of the continuous rolling system in the embodiment of the present invention is shown, wherein the continuous rolling system 4 comprises a rolling frame 41, and the rolling frame 41 is provided with at least two rolling assemblies 410 in sequence along the conveying direction of the material belt; Figure 6 Schematic diagram of the overall structure of the rolling assembly in the embodiment of the present invention is shown, any of the rolling assemblies 410 includes a rubber-coated roller 411 and a heating roller 412 arranged opposite to each other, and a rolling gap is formed between the rubber-coated roller 411 and the heating roller 412; see Figure 5 , the rolling gaps of all rolling assemblies 410 form a continuous rolling path, and the continuous rolling path is used to pass the material strip; please refer to Figure 6 The two ends of the rubber-coated roller 411 are rotatably set on the sliding plate 413, and the sliding plate 413 is slidably set on the rolling frame 41; the two ends of the heating roller 412 are rotatably set on the fixed plate 414, and the fixed plate 414 is fixedly set on the rolling frame 41; any of the sliding plates 413 is connected to a rolling actuator 415, and the sliding plate 413 is driven by the rolling actuator 415 to move on the rolling frame 41; the rolling gap is driven by the rolling actuator 415 to increase or decrease; the rubber-coated roller 411, the heating roller 412 and the rolling actuator 415 in each rolling assembly 410 cooperate with each other to adjust the thickness of the rubber solidified on the material belt, improve the thickness uniformity of the rubber, and improve the surface morphology of the rubber.

[0059] For details, please refer to Figure 6 The sliding plate 413 and the rolling actuator 415 are connected based on a second pressure sensor 416, and the rolling pressure can be fed back in real time.

[0060] When the rolling actuator 415 is a rolling cylinder, a gap adjustment mechanism 420 is further provided between the rubber-coated roller 411 and the heating roller 412. Figure 7 Shows Figure 6 The enlarged structural diagram of the middle A area shows that the gap adjustment mechanism 420 includes a gap adjustment bracket 421, a linear guide 422 fixedly arranged on the gap adjustment bracket 421, a wedge 423 slidably arranged on the linear guide 422, a screw 424 rotatably arranged on the gap adjustment bracket 421, and a wedge seat 425 cooperating with the wedge 423, wherein the screw 424 passes through the wedge 423, and the wedge 423 is driven by the screw 424 to slide on the linear guide 422; the gap adjustment bracket 421 is arranged on the fixed plate 414 or the sliding plate 413, and the wedge seat 425 is correspondingly fixedly arranged on the sliding plate 413 or the fixed plate 414; the contact surface between the wedge 423 and the wedge seat 425 is inclined, and the gap size between the rubber-coated roller 411 and the heating roller 412 can be adjusted by changing the position of the wedge 423, so as to achieve the purpose of controlling the thickness of the material belt (with rubber material attached) after rolling.

[0061] The roller pressing cylinder is also equipped with a precision electrical proportional valve with adjustable pressure accuracy to ensure uniform roller pressing pressure.

[0062] When the roller actuator 415 is a roller electric cylinder, the movement stroke of the sliding plate 413 can be directly and accurately controlled, that is, the gap size between the rubber-coated roller 411 and the heating roller 412 can be directly and accurately controlled. At this time, there is no need to set a gap adjustment mechanism 420 between the rubber-coated roller 411 and the heating roller 412.

[0063] In some specific embodiments, see Figure 5 , the roller pressing frame 41 is provided with a first roller pressing assembly, a second roller pressing assembly, a third roller pressing assembly, a fourth roller pressing assembly and a fifth roller pressing assembly in sequence along the conveying direction of the material belt, and the rubber-coated roller 411 and the heating roller 412 thereof have multiple arrangement modes. Optionally, in the first roller pressing assembly, the second roller pressing assembly and the fourth roller pressing assembly, the heating roller 412 is at the top and the rubber-coated roller 411 is at the bottom; in the third roller pressing assembly and the fifth roller pressing assembly, the heating roller 412 is at the bottom and the rubber-coated roller 411 is at the top. Optionally, in the first roller pressing assembly, the third roller pressing assembly and the fifth roller pressing assembly, the heating roller 412 is at the top and the rubber-coated roller 411 is at the bottom; in the second roller pressing assembly and the fourth roller pressing assembly, the heating roller 412 is at the bottom and the rubber-coated roller 411 is at the top. Optionally, in the first rolling assembly, the third rolling assembly and the fifth rolling assembly, the heating roller 412 is at the bottom and the rubber-coated roller 411 is at the top; in the second rolling assembly and the fourth rolling assembly, the heating roller 412 is at the top and the rubber-coated roller 411 is at the bottom.

[0064] In some specific embodiments, see Figure 5 , a plurality of first floating rollers 431 are provided on one side of the continuous rolling path, and the plurality of first floating rollers 431 are used to adjust the tension of the material strip passing through the continuous rolling path; and / or

[0065] A plurality of second floating rollers 432 are disposed on the other side of the continuous rolling path, and the plurality of second floating rollers 432 are used to adjust the tension of the material strip passing through the continuous rolling path.

[0066] The first floating roller 431 and the second floating roller 432 can both be powered by a pneumatic cylinder or an electric cylinder to achieve an upward and downward floating adjustment of their positions, thereby tensioning the material belt.

[0067] Specifically, there are five first floating rollers 431, and the five first floating rollers 431 are distributed on the lower side of the continuous rolling path; and / or

[0068] There are three second floating rollers 432 , and the three second floating rollers 432 are distributed on the upper side of the continuous rolling path.

[0069] In some specific embodiments, see Figure 5 The roller frame 41 is provided with a belt connecting device 440, which includes a plurality of sprocket wheels 441 rotatably arranged on the roller frame 41, and a chain 442 wound around the sprocket wheels 441, the chain 442 is connected end to end to form a chain ring, part of the chain ring is located beside the continuous roller path, and the chain ring is used to lead the head end of the material belt along the continuous roller path. When connecting the belt, the head end of the material belt is fixed on the chain ring at the front end of the continuous roller path, and then the sprocket wheel 441 is driven to drive the chain ring to lead the material belt along the continuous roller path, which is convenient and quick.

[0070] In some specific embodiments, see Figure 5 At least one hot roller scraper 451 is arranged beside any of the heating rollers 412. The hot roller scraper 451 is used to remove impurities on the surface of the heating roller 412, which is conducive to keeping the surface of the heating roller 412 clean, thereby ensuring the rolling effect of the material strip; a receiving basin 452 is arranged below any of the hot roller scrapers 451. The receiving basin 452 is used to receive impurities scraped off by the hot roller scraper 451. On the one hand, the impurities can be collected for easy cleaning; on the other hand, the impurities can be prevented from falling on the material strip, which is conducive to keeping the material strip clean. The hot roller scraper 451 can be powered by a cylinder or an electric cylinder to approach or move away from the surface of the heating roller 412.

[0071] Specifically, the heating rollers 412 at the front end of the continuous rolling path are prone to be adhered to more impurities, so two hot roller scrapers 451 are arranged opposite to each other beside these heating rollers 412 to quickly remove the impurities on the surface of the heating rollers 412.

[0072] In some specific embodiments, see Figure 1 The drying system 3 and the continuous rolling system 4 are connected via a deviation-correcting traction system 6, which is used to adjust the running trajectory of the material belt to avoid the material belt from being skewed, which is beneficial for the continuous rolling of the material belt; moreover, the deviation-correcting traction system 6 can also control the tension of the material belt section during the drying process.

[0073] In some specific embodiments, the winding system 5 includes a winding base and a winding frame movably arranged on the winding base, and the winding frame is provided with a winding servo motor, a winding shaft, a winding tension detection roller and a winding floating roller, the winding shaft is used to install the head end of the material tape, and the winding shaft is driven by the winding servo motor to rewind the material tape; the winding tension detection roller and the winding floating roller are used to pass through the material tape, the winding tension detection roller is used to detect the tension of the material tape, the winding floating roller is used to adjust the tension of the material tape, the winding floating roller adjusts its own position according to the tension feedback of the winding tension detection roller, and the winding servo motor adjusts its own speed according to the tension feedback of the winding tension detection roller; the winding system 5 adopts a double closed-loop control mode composed of a winding servo motor, a winding tension detection roller and a winding floating roller, so that when the roll-to-roll glue dipping roller pressing integrated equipment is started or stopped, the tension stability of the material tape can be better guaranteed, thereby preventing the material tape from breaking due to uneven force.

[0074] Specifically, the winding base is provided with a winding correction sensor and a winding correction actuator. The winding correction sensor is used to detect the edge position of the material strip, and the winding correction actuator adjusts the overall position of the winding frame according to the feedback of the winding correction sensor, so that the winding system 5 can have an automatic correction function.

[0075] The working process of the roll-to-roll glue dipping and rolling integrated equipment of the present invention is as follows:

[0076] First, phenolic resin, deionized water, graphite powder, etc. are prepared into a glue slurry and injected into a liquid storage tank 240; then, the roll-shaped base paper material of the carbon fiber paper is installed on the unwinding shaft, the material tape is manually threaded, and the head end of the material tape is installed on the winding shaft; then, the roll-to-roll glue dipping and roller pressing integrated equipment is started, the glue slurry in the liquid storage tank 240 is automatically injected into the ultrasonic water tank 210, and the unwinding system 1 unwinds and continuously outputs the material tape, and the material tape enters the ultrasonic water tank 210 for glue dipping after the tension control and deviation correction of the unwinding system 1; then, the glued material tape passes through the liquid control mechanism 230 to remove the excess slurry on the surface, and then enters the vertical oven 310 and the horizontal oven 320 for continuous drying; then, the material tape after drying enters the deviation correction and traction system 6 to complete the deviation correction and tension control; then, the material tape enters the continuous roller pressing system 4 to complete the hot pressing and curing; finally, the winding system 5 completes the winding, stops the roll-to-roll glue dipping and roller pressing integrated equipment, and manually unloads the coil.

[0077] The roll-to-roll glue dipping and rolling integrated equipment of the present invention can continuously perform glue dipping, drying and rolling processing on the rolled base paper material (roll material) of carbon fiber paper through the unwinding system 1, the glue dipping system 2, the drying system 3, the continuous rolling system 4 and the winding system 5 which are connected in sequence, and can automatically control the tension, correct the deviation, replenish the glue slurry, etc. It has a high degree of automation and high production efficiency, and also lays the foundation for the subsequent high-temperature carbonization and high-temperature graphitization of the roll material, thereby effectively improving the overall production efficiency of the carbon fiber paper.

[0078] At the same time, the present invention can make the rubber material evenly distributed on the material belt and reduce the defects of the rubber material surface layer through the cooperation of the ultrasonic water tank 210, the bubble isolation plate 217, the circulating filtering device, the liquid control mechanism 230, the vertical oven 310, the horizontal oven 320, the rubber-coated roller 411, the heating roller 412, the hot roller scraper 451 and the material receiving basin 452, so as to effectively improve the production quality of carbon fiber paper.

[0079] The above is a detailed introduction to a roll-to-roll glue dipping and roller pressing integrated equipment provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in the field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A roll-to-roll dipping and rolling integrated equipment, characterized in that: It includes an unwinding system, a dipping system, a drying system, a continuous rolling system and a winding system connected in sequence; wherein the unwinding system is used to unwind the carbon fiber paper base paper coil and output the material strip; the dipping system is used to dip the material strip into the adhesive slurry; the drying system is used to dry the adhesive slurry attached to the material strip; the continuous rolling system is used to adjust the thickness of the adhesive cured on the material strip; the winding system is used to rewind the material strip to form a carbon fiber paper adhesive coil; The dipping system includes an ultrasonic water tank, and a first guide roller and a liquid control mechanism arranged above the ultrasonic water tank, wherein the first guide roller is located at the material belt input side of the ultrasonic water tank, and the first guide roller is used to receive the material belt output by the unwinding system; the liquid control mechanism is located at the material belt output side of the ultrasonic water tank, and the liquid control mechanism is used to remove excess glue slurry on the material belt; The ultrasonic water tank is used to hold the adhesive slurry; an ultrasonic vibration plate is provided at the bottom of the ultrasonic water tank, and the ultrasonic vibration plate is used to disperse the adhesive slurry; a liquid inlet and a liquid outlet are provided at the bottom of the ultrasonic water tank, the liquid inlet is located at the material belt input side of the ultrasonic water tank, and the liquid outlet is located at the material belt output side of the ultrasonic water tank; a bubble isolation plate is provided inside the ultrasonic water tank, and a holding space is formed between the bubble isolation plate and the inner wall of the ultrasonic water tank, and the liquid inlet is located in the holding space; The liquid control mechanism comprises a liquid control frame, and the liquid control frame is provided with a scraper blade group and a metering roller group in sequence along the conveying direction of the material belt, and the scraper blade group comprises a first scraper and a second scraper, and a scraper gap is formed between the first scraper and the second scraper, and the scraper gap is used to pass the material belt; The metering roller group comprises a first metering roller and a second metering roller, a liquid squeezing gap is formed between the first metering roller and the second metering roller, and the liquid squeezing gap is used to pass the material belt; The liquid control frame is provided with a quantitative cylinder and a quantitative base, the output end of the quantitative cylinder points to the quantitative base, and the quantitative base moves on the liquid control frame driven by the quantitative cylinder; a first pressure sensor is provided on the output end of the quantitative cylinder; both ends of the first quantitative roller are rotatably provided on the liquid control frame, and both ends of the second quantitative roller are rotatably provided on the corresponding quantitative base, and the liquid squeezing gap is driven by the quantitative cylinder to become smaller; The liquid control frame is provided with a first pneumatic scraper and a second pneumatic scraper, wherein the first pneumatic scraper is used to remove residual slurry on the surface of the first quantitative roller, and the second pneumatic scraper is used to remove residual slurry on the surface of the second quantitative roller; The first pneumatic scraper includes a first push cylinder fixedly arranged on the liquid control frame and a third scraper fixedly arranged on the output end of the first push cylinder, and the third scraper is driven by the first push cylinder to approach or move away from the first metering roller; The second pneumatic scraper comprises a second push cylinder fixedly arranged on the liquid control frame and a fourth scraper fixedly arranged on the output end of the second push cylinder, and the fourth scraper is driven by the second push cylinder to approach or move away from the second metering roller; The drying system comprises at least one vertical oven and a plurality of horizontal ovens, wherein the at least one vertical oven is located at the front end of the plurality of horizontal ovens, the vertical oven is used to vertically pass through the material belt and dry, and the horizontal oven is used to horizontally pass through the material belt and dry; The continuous rolling system includes a rolling frame, and the rolling frame is provided with at least two rolling assemblies in sequence along the conveying direction of the material strip. Any of the rolling assemblies includes a rubber-coated roller and a heating roller arranged opposite to each other, and a rolling gap is formed between the rubber-coated roller and the heating roller. The rolling gaps of all the rolling assemblies constitute a continuous rolling path, and the continuous rolling path is used to pass the material strip.

2. The roll-to-roll dipping and rolling integrated equipment according to claim 1, characterized in that: A second guide roller, a power roller and a third guide roller are sequentially arranged inside the ultrasonic water tank along the conveying direction of the material belt, and the material belt is passed through and wound from below the second guide roller, above the power roller and below the third guide roller in sequence.

3. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: The bottom of the ultrasonic water tank is gradually inclined downward from the material belt input side to the material belt output side.

4. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: The ultrasonic water tank is connected to a liquid storage tank, which is used to store glue slurry; a liquid level detection sensor and a concentration detection sensor are arranged inside the ultrasonic water tank, and the liquid storage tank automatically replenishes the glue slurry into the ultrasonic water tank based on the feedback of the liquid level detection sensor and the concentration detection sensor.

5. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: The two ends of the rubber-coated roller are rotatably set on a sliding plate, and the sliding plate is slidably set on the rolling frame; the two ends of the heating roller are rotatably set on a fixed plate, and the fixed plate is fixedly set on the rolling frame; any of the sliding plates is connected to a rolling actuator, and the sliding plate is driven by the rolling actuator to move on the rolling frame; the rolling gap is driven by the rolling actuator to increase or decrease; the sliding plate and the rolling actuator are connected based on a second pressure sensor.

6. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: A plurality of first floating rollers are arranged on one side of the continuous rolling path, and the plurality of first floating rollers are used to adjust the tension of the material strip passing through the continuous rolling path; and / or A plurality of second floating rollers are arranged on the other side of the continuous rolling path, and the plurality of second floating rollers are used to adjust the tension of the material strip passing through the continuous rolling path.

7. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: The roller frame is provided with a belt connecting device, which includes a plurality of sprockets rotatably arranged on the roller frame, and chains passed through the sprockets, the chains are connected end to end to form a chain loop, part of the chain loop is located beside the continuous rolling path, and the chain loop is used to lead the head end of the material belt out along the continuous rolling path.

8. The roll-to-roll glue dipping and rolling integrated equipment according to claim 1, characterized in that: At least one hot roller scraper is arranged beside any of the heating rollers, and the hot roller scraper is used to remove impurities on the surface of the heating roller; A receiving basin is arranged below any of the hot roller scrapers, and the receiving basin is used to receive impurities scraped off by the hot roller scraper.

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