A release paper coating, spraying and drying device

Abstract

The present invention relates to the technical field of release paper production equipment, and particularly relates to a release paper coating, spraying and drying device, which includes a conveyor line. A preheating and feeding assembly for preheating the release paper is arranged at the feeding end of the conveyor line. A drying assembly is arranged on the conveyor line at the discharging end of the preheating and feeding assembly. A drying channel communicating with the preheating and feeding assembly is formed between the drying assembly and the conveyor line. An output detection assembly for detecting the drying quality of the release paper is arranged on the conveyor line at the discharging end of the drying channel; Heat insulation parts are respectively arranged above both sides of the conveyor line along its length direction. Both heat insulation parts are located in the drying channel. A low-temperature drying area is formed between the two heat insulation parts and the conveyor line; Two heat insulation parts are arranged in the rear section of the drying channel to insulate and partition the two side edges of the conveyor line. When the release paper passes through the rear section of the drying channel, the two side areas thereof enter the relatively low-temperature drying area, avoiding problems such as edge warping and embrittlement.

Description

Technical Field

[0001] The present invention relates to the technical field of release paper production equipment, and particularly relates to a release paper coating spraying and drying device. Background Art

[0002] During the production process of release paper, a plastic coating layer needs to be coated on the surface. However, the plastic coating layer after coating cannot be quickly cooled, and a drying device is required to complete the drying process. When the existing drying device dries the release paper, the problem of local over-drying is likely to occur. In particular, the areas at the two side edges of the release paper can be dried more quickly compared to other middle areas. Often, after the release paper completes the entire drying process, there are certain over-drying problems at the two side edges of the release paper, which seriously affects the quality of the release paper.

[0003] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of the present invention is to provide a release paper coating spraying and drying device, which reasonably divides the drying cavity to effectively avoid the problem of over-drying at the two side edges of the release paper.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A release paper coating spraying and drying device includes a conveyor line. A preheating feeding component for preheating the release paper is arranged at the feeding end of the conveyor line. A drying component is arranged on the conveyor line at the discharging end of the preheating feeding component. A drying channel communicating with the preheating feeding component is formed between the drying component and the conveyor line. An output detection component for detecting the drying quality of the release paper is arranged on the conveyor line at the discharging end of the drying channel. The output detection component is electrically connected to the preheating feeding component and the drying component respectively. Heat insulation parts are respectively arranged above the two sides of the conveyor line along its length direction. Both of the two heat insulation parts are located in the drying channel, and a low-temperature drying area is formed between the two heat insulation parts and the conveyor line.

[0007] In the release paper coating spraying and drying device, the drying component includes a plurality of hot air devices distributed along the length direction of the conveyor line. The hot air devices are located above the conveyor line, and the air outlets of the hot air devices face the conveying surface of the conveyor line. An air distribution cover is arranged at the air outlet of the hot air device. A buffer cavity is arranged in the air distribution cover, and a plurality of air outlet holes are arranged at the bottom of the buffer cavity.

[0008] In the described release paper coating, spraying and drying device, a first air zone is formed at the bottom of the buffer chamber. Second air zones are respectively arranged on both sides of the first air zone close to the heat insulation part. The number of air outlet holes at the bottom of the first air zone is greater than that of the air outlet holes at the bottom of the second air zone.

[0009] In the described release paper coating, spraying and drying device, a first air distribution plate is arranged along the length direction in the drying channel. The first air distribution plate is located between the air distribution cover and the conveying line. A plurality of wind blocking blocks are distributed along the length direction on the first air distribution plate, and air outlet channels are formed between adjacent wind blocking blocks; the two heat insulation parts are respectively arranged on both sides of the top of the first air distribution plate, and at least part of both sides of the air outlet channel is located below the two heat insulation parts.

[0010] In the described release paper coating, spraying and drying device, the length of the heat insulation part is less than that of the first air distribution plate, and the heat insulation part is located at one end of the first air distribution plate close to the output detection component.

[0011] In the described release paper coating, spraying and drying device, the cross-sectional area of the heat insulation part gradually increases along the transmission direction of the conveying line, and a wind guiding surface inclined towards the central axis direction of the conveying line is arranged at the top of the heat insulation part.

[0012] In the described release paper coating, spraying and drying device, the preheating feeding component includes an exhaust cover and a hot air component. The exhaust cover is arranged at the feeding end of the conveying line. An exhaust port is arranged at the top of the exhaust cover, and an exhaust component is arranged on the exhaust port. The hot air component is arranged below the conveying surface of the conveying line, and the air outlet of the hot air component faces the conveying surface of the conveying line. A second air distribution plate is arranged between the hot air component and the conveying surface of the conveying line.

[0013] In the described release paper coating, spraying and drying device, a sealing cover is arranged at the inlet end of the exhaust cover, and the sealing cover extends outwards towards the feeding end of the conveying line.

[0014] In the described release paper coating, spraying and drying device, the output detection component includes a discharging machine frame. The discharging machine frame is arranged at the discharging end of the conveying line. A cold air component, a first image shooting component and a second image shooting component are sequentially arranged in the discharging machine frame above the conveying line along the transmission direction of the conveying line. The first image shooting component and the second image shooting component are respectively electrically connected to the preheating feeding component and the drying component.

[0015] In the release paper coating, spraying and drying device described above, the cold air assembly includes two cold air blowers that are opposite to each other in position, and the two cold air blowers are respectively arranged on the discharge rack; the first image shooting assembly includes a first transverse movement module, a first sliding frame is slidably connected to the first transverse movement module, and a first shooting unit and a first light emitting unit are respectively arranged on the first sliding frame; the second image shooting assembly includes a second transverse movement module, a second sliding frame is slidably connected to the second transverse movement module, and a second shooting unit and a second light emitting unit are respectively arranged on the second sliding frame; the first shooting unit and the second shooting unit are respectively located on both sides above the conveying line, and the first shooting unit and the second shooting unit are respectively electrically connected to the preheating feeding assembly and the drying assembly.

[0016] Beneficial effects:

[0017] The present invention provides a release paper coating, spraying and drying device. The preheating feeding assembly moderately heats the bottom of the release paper, which can significantly improve the drying speed of the upper coating liquid of the release paper, and can also ensure the uniformity and consistency of the drying process, thereby greatly improving the production efficiency. The drying assembly adopts an efficient hot air circulation system to comprehensively dry the preheated release paper semi-finished product, ensuring that the plastic coating layer dries quickly and evenly. And two heat insulation parts are arranged at the rear section of the drying channel to effectively insulate and partition the two sides of the conveying line, reducing the drying temperature on both sides at the rear section of the drying channel. When the release paper passes through the rear section of the drying channel, the two side areas enter a relatively low-temperature drying area, avoiding quality problems such as edge warping and embrittlement caused by too fast drying, thereby effectively improving the overall production quality of the release paper and ensuring that the product reaches the best state in each link. In addition, the output detection assembly controls the drying assembly by shooting the image of the upper surface of the release paper and combining the feedback signal, and timely eliminates drying defects to improve the production quality of the release paper. Description of the drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the release paper coating, spraying and drying device provided by the present invention Figure 1 ;

[0019] Figure 2 It is a schematic diagram of the overall structure of the release paper coating, spraying and drying device provided by the present invention Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the internal structure of the drying assembly in the release paper coating, spraying and drying device provided by the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the first air distribution plate and the air distribution cover in the release paper coating, spraying and drying device provided by the present invention;

[0022] Figure 5 Schematic diagram of the disassembled structure of the preheating feeding assembly in the release paper coating, spraying and drying device provided by the present invention;

[0023] Figure 6 Schematic diagram of the disassembled structure of the output detection assembly in the release paper coating, spraying and drying device provided by the present invention.

[0024] Description of main component symbols: 1 - conveyor line, 11 - first temperature sensor, 12 - second temperature sensor, 13 - third temperature sensor, 2 - preheating feeding assembly, 21 - exhaust cover, 22 - hot air assembly, 23 - exhaust assembly, 24 - second air distribution plate, 25 - sealing cover, 3 - drying assembly, 31 - hot air device, 32 - air distribution hood, 321 - buffer chamber, 322 - air outlet hole, 33 - first air distribution plate, 331 - wind blocking block, 4 - output detection assembly, 41 - discharge rack, 42 - cold air assembly, 421 - cold air blower, 43 - first image capturing assembly, 431 - first transverse movement module, 432 - first sliding rack, 433 - first capturing unit, 434 - first light emitting unit, 44 - second image capturing assembly, 441 - second transverse movement module, 442 - second sliding rack, 443 - second light emitting unit, 5 - heat insulation part. Detailed implementation manners

[0025] The present invention provides a release paper coating, spraying and drying device. To make the purpose, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "middle part", "inner side", "outer side", etc. are the orientation or positional relationships of the present invention based on the drawings, which are only for the convenience of describing the present invention and simplifying the description. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0027] Please refer to Figures 1 to 6, the present invention provides a release paper coating spray drying device, including a conveyor line 1, and a preheating feeding component 2 for preheating the release paper is arranged at the feeding end of the conveyor line 1; the preheating feeding component 2 is used to preheat the bottom of the release paper after film laminating or coating to a certain extent, so that the release paper can reach the effect of uniform heating in advance before entering the drying component 3, effectively accelerating the drying rate of the film laminating liquid on the upper layer of the release paper; a drying component 3 is arranged at the discharging end of the conveyor line 1 located at the preheating feeding component 2, and a drying channel communicating with the preheating feeding component 2 is formed between the drying component 3 and the conveyor line 1. An output detection component 4 for detecting the drying quality of the release paper is arranged at the discharging end of the conveyor line 1 located in the drying channel, and the output detection component 4 is electrically connected with the preheating feeding component 2 and the drying component 3 respectively; the drying component 3 is used to dry the preheated release paper semi-finished product, so that the plastic film laminating layer covering the surface of the release paper is quickly dried. In addition, when the release paper passes through the drying channel, it will enter the output detection component 4. The output detection component 4 compares the captured surface image with the standard reference image by taking pictures of the upper surface of the release paper, so as to judge whether the drying quality of the release paper meets the quality requirements. If there is a deviation in the surface image of the release paper, a corresponding signal can be fed back to the drying component 3 to complete the feedback control to eliminate the drying defects of the release paper; heat insulation parts 5 are respectively arranged above both sides of the conveyor line 1 along its length direction, and both heat insulation parts 5 are located in the drying channel. A low-temperature drying area is formed between the two heat insulation parts 5 and the conveyor line 1; since the drying rate of the two side edges of the release paper is faster than that of the remaining middle area during the drying process, two heat insulation parts 5 are arranged at the rear section of the drying channel to insulate and partition the two side edges of the conveyor line 1, so as to reduce the drying temperature on both sides of the rear section of the drying channel, so that the two side areas of the release paper can enter the low-temperature drying area when passing through the rear section, avoiding the problem of over-drying of the two side edges of the release paper after drying, and effectively improving the production quality of the release paper.

[0028] In actual use, the preheating feeding component 2 preheats the bottom of the release paper to a certain extent. The preheating method can not only effectively accelerate the drying rate of the coating liquid on the upper layer of the release paper, but also ensure the uniformity and consistency of the drying process, thereby significantly improving production efficiency; the drying component 3 adopts an efficient hot air circulation system to perform a full range of drying treatment on the preheated release paper semi-finished product, so that the plastic coating layer covering the surface of the release paper can be quickly and evenly dried. At the same time, considering that the drying rate of the two side edges of the release paper during the drying process is faster than that of the remaining middle area, this uneven drying phenomenon is likely to cause the problem of over-drying on the two side edges, affecting the product quality. Therefore, by setting two insulation parts 5 in the rear section of the drying channel, the two side edges of the conveyor line 1 are effectively insulated and partitioned to reduce the drying temperature on both sides of the rear section of the drying channel. When the release paper passes through the rear section, the two side areas can enter the relatively low temperature drying area to avoid quality problems such as edge warping and brittleness caused by over-fast drying, thereby effectively improving the overall production quality of the release paper and ensuring that the product reaches the optimal state in all links. In addition, the output detection component 4 is used to capture an image of the upper surface of the release paper, and the feedback signal is used to feedback control the drying component 3 to eliminate the drying defects of the release paper in time, ensuring that each piece of release paper meets high quality standards.

[0029] like Figures 1 to 6 As shown, further, the drying component 3 includes a plurality of hot air devices 31 distributed along the length direction of the conveyor line 1, the hot air devices 31 are located above the conveyor line 1, and the air outlet of the hot air device 31 faces the conveying surface of the conveyor line 1; by arranging a plurality of hot air devices 31 at intervals in the length direction of the conveyor line 1, the hot air in the drying channel can be evenly distributed to avoid thermal faults in the drying channel; the air outlet of the hot air device 31 is provided with a uniform wind hood 32, a buffer cavity 321 is provided in the uniform wind hood 32, and a plurality of air outlet holes 322 are provided at the bottom of the buffer cavity 321; the uniform wind hood 32 is used to slow down the hot air flow rate of the hot air device 31 to avoid sharp peaks in the hot air, so that the hot air outlet forms relatively dispersed hot air to fill the space of the drying channel.

[0030] In this embodiment, through a plurality of hot air devices 31 distributed along the length direction of the conveyor line 1, it can be ensured that the articles on the conveyor line 1 are continuously baked by hot air during the moving process, so as to achieve uniform and efficient drying. The hot air device 31 is located above the conveyor line 1, and the air outlet faces the conveying surface. Such a layout enables the hot air to directly act on the surface of the articles, improving the drying efficiency. The setting of the air distribution hood 32 further optimizes the distribution of hot air. The buffer chamber 321 in the air distribution hood 32 can slow down the flow rate of hot air, reducing heat loss and damage to the surface of the articles caused by too fast wind speed. At the same time, a plurality of air outlet holes 322 at the bottom of the buffer chamber 321 can evenly disperse the hot air to each area on the conveying surface, ensuring that all parts of the articles can be fully dried.

[0031] As Figures 1 to 6 shown, further, a first air zone is formed at the bottom of the buffer chamber 321, and second air zones are respectively arranged on both sides of the first air zone close to the heat insulation part 5. The number of air outlet holes 322 at the bottom of the first air zone is greater than the number of air outlet holes 322 at the bottom of the second air zone.

[0032] In this embodiment, by arranging the first air zone and the second air zone in the buffer chamber 321 and adjusting the number of air outlet holes 322, precise control of the air flow output by the hot air device 31 is achieved. In the first air zone, due to the relatively large number of air outlet holes 322, the air flow is more intensive, which can provide a stronger drying effect and effectively improve the drying effect on the middle area of the release paper. In the second air zone, which is located on both sides of the first air zone and has a relatively small number of air outlet holes 322, the air flow is relatively sparse, which helps to form a gentle air flow environment during the drying process, reducing the baking temperature on both sides of the release paper and avoiding the problem of over-drying at the edges of the release paper due to too strong hot air flow.

[0033] In addition, the second air zone cooperates with the heat insulation part 5 to effectively reduce the drying temperature in the drying channel, making the hot air flow rate and hot air temperature in the low-temperature drying zone reach a relatively gentle level, effectively isolating the heat exchange between the middle area and the two side areas of the drying channel, achieving precise control of the drying process of the release paper, ensuring the uniformity of the entire drying process, forming a special drying partition according to the drying characteristics of the release paper, and avoiding the problem of over-drying at the edges of the release paper.

[0034] As Figures 1 to 6 shown, further, a first air distribution plate 33 is arranged along the length direction in the drying channel. The first air distribution plate 33 is located between the air distribution hood 32 and the conveyor line 1. A plurality of wind blocking blocks 331 are distributed along the length direction on the first air distribution plate 33, and air outlet channels are formed between adjacent wind blocking blocks 331; the two heat insulation parts 5 are respectively arranged on both sides of the top of the first air distribution plate 33, and at least part of both sides of the air outlet channel is located below the two heat insulation parts 5.

[0035] In this embodiment, by providing the first air distribution plate 33 and distributing a plurality of wind blocking blocks 331 along its length direction, the hot air flow can be effectively and evenly distributed. The air outlet channels formed between adjacent wind blocking blocks 331 enable the hot air to blow more evenly onto the release paper on the conveyor line 1, avoiding problems such as local overheating or uneven drying, and improving the drying efficiency and quality.

[0036] Secondly, two heat insulation parts 5 are respectively arranged on both sides of the top of the first air distribution plate 33. The heat insulation parts 5 are used to block at least part of the hot air flow on both sides of the air outlet channel to a certain extent, effectively slowing down the air flow velocity on both sides of the air outlet channel, thereby reducing the drying temperature on both sides of the drying channel. In addition, when the hot air flow hits the heat insulation part 5, an impact air flow will be formed, and the impact air flows on both sides will dissipate into the horizontal plane above the air outlet channel, thus also having a certain air distribution effect on the air flow blown down from the middle, avoiding the too fast air flow velocity of the hot air flow, and significantly improving the working efficiency, drying quality and heat energy utilization rate of the drying device.

[0037] In one embodiment, the wind blocking block 331 is trapezoidal, and a flow stopping groove is arranged on the surface of the wind blocking block 331 facing the conveyor line 1; the trapezoidal wind blocking block 331 improves the smoothness of the air flow during flow, and at the same time, the flow stopping groove is arranged at the bottom of the wind blocking block 331 to eliminate the problem of the backflow of the hot air flow.

[0038] In one embodiment, the conveyor line 1 includes at least one first temperature sensor 11, at least one second temperature sensor 12, and at least one third temperature sensor 13. The first temperature sensor 11 is disposed between the first air distribution plate 33 and the air distribution hood 32. The second temperature sensor 12 is disposed between the first air distribution plate 33 and the conveying surface of the conveyor line 1. The third temperature sensor 13 is disposed below the conveying surface of the conveyor line 1. The first temperature sensor 11, the second temperature sensor 12, and the third temperature sensor 13 are respectively electrically connected to each of the hot air devices 31. During use, the first temperature sensor 11 is used to monitor the upper layer temperature of the drying channel in real time, the second temperature sensor 12 is used to monitor the middle layer temperature of the drying channel in real time, and the third temperature sensor 13 is used to monitor the lower layer temperature of the drying channel in real time. Thus, the temperature of the hot air device 31 is precisely controlled using the upper layer temperature, the middle layer temperature, and the lower layer temperature. The upper layer temperature is the outlet air temperature of the air distribution hood 32. By monitoring the outlet air temperature of the air distribution hood 32, it is possible to preliminarily check whether the overall temperature of the drying channel is appropriate. The middle layer temperature is the drying temperature of the upper surface of the release paper. By monitoring this temperature, the drying condition of the upper surface of the release paper can be intuitively reflected. The lower layer temperature is the drying temperature of the lower surface of the release paper. By monitoring this temperature, the temperature condition of the lower surface of the release paper can be intuitively reflected. Through the regulation of the temperature of the hot air device 31 from a macroscopic perspective by the three temperatures, dynamic adjustment of the temperature of the drying channel is achieved.

[0039] As Figures 1 to 6 shown, further, the length of the heat insulation portion 5 is less than the length of the first air distribution plate 33, and the heat insulation portion 5 is located at one end of the first air distribution plate 33 close to the output detection assembly 4. Through the above arrangement, the heat insulation portion 5 can perform temperature control according to the drying process of the release paper. When the release paper is in the front section of the drying channel, all areas are dried at a unified temperature. When the release paper enters the rear section of the drying channel, since the drying rate of the two side edges of the release paper is greater than that of the middle region of the release paper, the heat insulation portion 5 is used to reduce the drying temperature and the hot air rate of the two side edges in the rear section, so as to keep the drying consistency between the middle region and the edge region of the release paper.

[0040] In one embodiment, the length of the heat insulation portion 5 is half of the length of the first air distribution plate 33.

[0041] As Figures 1 to 6As shown in the figure, further, the cross-sectional area of the heat insulation part 5 gradually increases along the transmission direction of the conveyor line 1, and a wind guiding surface inclined towards the central axis direction of the conveyor line 1 is arranged at the top of the heat insulation part 5; by gradually increasing the cross-sectional area of the heat insulation part 5 along the transmission direction of the conveyor line 1, the area of the low-temperature drying area can be increased in a gradient manner. In this way, the two side edges of the release paper can be cooled and dried in a gradient manner, so that the drying effect of the release paper is more uniform and more tends to be linear. In addition, by using the wind guiding surface to improve the diversion effect of the heat insulation part 5, the hot air flows on both sides can escape more smoothly to the middle area of the drying channel, further optimizing the drying process.

[0042] As Figures 1 to 6 shown in the figure, further, the preheating and feeding assembly 2 includes an exhaust cover 21 and a hot air assembly 22. The exhaust cover 21 is arranged at the feeding end of the conveyor line 1. An exhaust port is arranged at the top of the exhaust cover 21, and an exhaust assembly 23 is arranged on the exhaust port. The hot air assembly 22 is arranged below the conveying surface of the conveyor line 1, and the air outlet of the hot air assembly 22 faces the conveying surface of the conveyor line 1. A second air distribution plate 24 is arranged between the hot air assembly 22 and the conveying surface of the conveyor line 1; by arranging the hot air assembly 22 below the feeding end of the conveyor line 1, the preheating treatment of the release paper can be realized. When the release paper enters the exhaust hood along the conveyor line 1, the hot air blown out by the hot air assembly 22 will contact the bottom surface of the release paper after being evenly distributed by the second air distribution plate 24, so as to realize the preheating of the release paper and avoid problems such as curling and blistering caused by a large temperature difference when the release paper enters the drying assembly 3; at the same time, in order to avoid the too high temperature of the upper layer of the inner cavity of the exhaust hood, the upper layer air of the inner cavity is exhausted through the exhaust port at the top of the exhaust hood, so that the temperature of the upper layer of the inner cavity of the exhaust hood can be quickly cooled. When the temperature of the upper layer of the inner cavity of the exhaust hood is too high, the air in the inner cavity of the exhaust hood can be sucked by the exhaust assembly 23 to achieve the effect of rapid cooling, and the exhaust assembly 23 can also block the air in the external environment from flowing back into the exhaust hood.

[0043] It should be noted that the hot air assembly 22 can be an existing heating assembly such as a hot air blower and an electric heating wire; the exhaust assembly 23 can be an existing fan assembly.

[0044] As Figures 1 to 6As shown in the figure, further, a sealing cover 25 is provided at the inlet end of the exhaust hood 21, and the sealing cover 25 extends outward toward the feeding end of the conveyor line 1; the outwardly extending sealing cover 25 is used to achieve a sealed connection with the front coating and laminating equipment. The output end of the coating and laminating equipment is docked through the sealable cover 25, and the sealing cover 25 covers the output end of the coating and laminating equipment, thereby preventing the semi-finished release paper from being contaminated by dust during transmission. If too much dust adheres to the plastic laminating layer on the surface of the release paper, it will seriously affect the finished product quality of the release paper.

[0045] In one embodiment, the sealing cover 25 is a bellows-type sealing cover 25, and the foldable and stretchable characteristics of the bellows-type sealing cover 25 are used to meet the installation requirements of different models of coating and laminating equipment.

[0046] As Figures 1 to 6 shown in the figure, further, the output detection assembly 4 includes a discharge frame 41. The discharge frame 41 is arranged at the discharge end of the conveyor line 1. Inside the discharge frame 41 and above the conveyor line 1, a cold air assembly 42, a first image capturing assembly 43, and a second image capturing assembly 44 are sequentially arranged along the transmission direction of the conveyor line 1. The first image capturing assembly 43 and the second image capturing assembly 44 are electrically connected to the preheating feeding assembly 2 and the drying assembly 3 respectively.

[0047] In this embodiment, when the dried release paper enters the discharge frame 41, the cold air assembly 42 above the conveyor line 1 will appropriately cool down the release paper in a high-temperature state, so that the surface of the release paper is quickly solidified, improving the shooting accuracy of the first image capturing assembly 43 and the second image capturing assembly 44, and avoiding the hot air flow generated by high temperature from affecting the shooting quality of the first image capturing assembly 43 and the second image capturing assembly 44. The first capturing assembly and the second capturing assembly continuously capture the surface of the release paper from different angles to real-time judge the drying quality of the laminating layer on the surface of the release paper, and judge the finished product quality of the middle area and the edge area of the release paper from multiple angles. If it is found that the image of the middle area of the release paper is abnormal, it means that there may be problems of incomplete drying or over-drying in the middle area of the release paper. At this time, a signal needs to be timely fed back to the preheating feeding assembly 2 and / or the drying assembly 3 to adjust the overall heating temperature. Similarly, if it is found that the image of the edge area of the release paper is abnormal, it means that there may be problems of incomplete drying or over-drying in the edge area of the release paper. At this time, a signal also needs to be timely fed back to the preheating feeding assembly 2 and / or the drying assembly 3 to adjust the overall heating temperature.

[0048] As Figures 1 to 6As shown in the figure, further, the cold air assembly 42 includes two air coolers 421 which are opposite in position, and the two air coolers 421 are respectively arranged on the discharge rack 41; the first image shooting assembly 43 includes a first transverse movement module 431, a first sliding frame 432 is slidably connected to the first transverse movement module 431, and a first shooting unit 433 and a first light emitting unit 434 are respectively arranged on the first sliding frame 432; the second image shooting assembly 44 includes a second transverse movement module 441, a second sliding frame 442 is slidably connected to the second transverse movement module 441, and a second shooting unit (not shown in the figure) and a second light emitting unit 443 are respectively arranged on the second sliding frame 442; the first shooting unit 433 and the second shooting unit are respectively located on both sides above the conveyor line 1, and the first shooting unit 433 and the second shooting unit are respectively electrically connected to the preheating and feeding assembly 2 and the drying assembly 3.

[0049] In this embodiment, two air coolers 421 which are opposite in position are used to form a dissipated cold air flow above the conveyor line 1. When the two air coolers 421 spray cold air flows relatively, the two cold air flows will collide. During the collision process, the flow rates of the two cold air flows are effectively slowed down, avoiding the blowing of the release paper by the high-speed air flow. At the same time, the collided cold air flows will form a dissipated air flow, so as to form a low-temperature area in the discharge rack 41, and the low-temperature area is used to appropriately cool the release paper, so that the coating layer on the surface of the release paper can be quickly solidified, improving the acquisition accuracy of the image; in addition, the first transverse movement module 431 and the second transverse movement module 441 are used to adjust the horizontal positions of the first shooting unit 433 and the second shooting unit, so as to obtain the surface image of the release paper from different angles. When in use, the positions of the first shooting unit 433 and the second shooting unit are arranged in a staggered manner to ensure the diversity of the shooting angles. During the shooting process, the first light emitting unit 434 and the second light emitting unit 443 are used for supplementary lighting to improve the imaging quality of the first shooting unit 433 and the second shooting unit.

[0050] In one embodiment, the output detection assembly 4 further includes a controller, and the first shooting unit 433 and the second shooting unit are respectively electrically connected to the preheating and feeding assembly 2 and the drying assembly 3 through the controller; the controller can be an existing microprocessor, a single-chip microcomputer controller and other existing controllers.

[0051] It should be noted that the first shooting unit 433 and the second shooting unit can be existing high-speed cameras; the first light emitting unit 434 and the second light emitting unit 443 can be existing LED lights.

[0052] In summary, by moderately heating the bottom of the release paper, the preheating feeding component 2 significantly accelerates the drying speed of the upper coating liquid and ensures the uniformity and consistency of the drying process, thus greatly improving the production efficiency. The drying component 3 adopts an efficient hot air circulation system to comprehensively dry the preheated release paper semi-finished product, ensuring that the plastic coating layer dries quickly and evenly. The two heat insulation parts 5 arranged at the rear section of the drying channel effectively conduct heat insulation zoning on both side edges of the conveyor line 1, reducing the drying temperature on both sides at the rear section of the drying channel. When the release paper passes through the rear section of the drying channel, the two side areas enter a relatively low-temperature drying area, avoiding quality problems such as edge warping and embrittlement caused by too fast drying, thus effectively improving the overall production quality of the release paper and ensuring that the product reaches the best state in each link. In addition, the output detection component 4 controls the drying component 3 by taking pictures of the upper surface image of the release paper and combining with the feedback signal, and timely eliminates drying defects to improve the production quality of the release paper.

[0053] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions and inventive concepts of the present invention, and all such changes or substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. A release paper coating, spraying and drying device, characterized in that, It includes a conveyor line. A preheating feeding component for preheating the release paper is arranged at the feeding end of the conveyor line. A drying component is arranged at the discharging end of the conveyor line where the preheating feeding component is located. A drying channel communicating with the preheating feeding component is formed between the drying component and the conveyor line. An output detection component for detecting the drying quality of the release paper is arranged at the discharging end of the conveyor line where the drying channel is located. The output detection component is electrically connected to the preheating feeding component and the drying component respectively; Heat insulation parts are respectively arranged above both sides of the conveyor line along its length direction. Both of the two heat insulation parts are located in the drying channel. A low-temperature drying area is formed between the two heat insulation parts and the conveyor line; The drying component includes a plurality of hot air devices distributed along the length direction of the conveyor line. The hot air devices are located above the conveyor line, and the air outlets of the hot air devices face the conveying surface of the conveyor line. An air distribution cover is arranged at the air outlet of the hot air device. A buffer cavity is arranged in the air distribution cover. A plurality of air outlet holes are arranged at the bottom of the buffer cavity; A first air area is formed at the bottom of the buffer cavity. Second air areas are respectively arranged on both sides of the first air area close to the heat insulation parts. The number of air outlet holes at the bottom of the first air area is greater than that of the air outlet holes at the bottom of the second air area; The cross-sectional area of the heat insulation part gradually increases along the transmission direction of the conveyor line, and a wind guiding surface inclined towards the central axis direction of the conveyor line is arranged at the top of the heat insulation part.

2. The release paper coating, spraying and drying device according to claim 1, characterized in that, A first air distribution plate is arranged along the length direction in the drying channel. The first air distribution plate is located between the air distribution cover and the conveyor line. A plurality of wind blocking blocks are distributed along the length direction on the first air distribution plate. An air outlet channel is formed between adjacent wind blocking blocks; The two heat insulation parts are respectively arranged on both sides of the top of the first air distribution plate, and at least part of both sides of the air outlet channel is located below the two heat insulation parts.

3. The release paper coating, spraying and drying device according to claim 2, characterized in that, The length of the heat insulation part is less than that of the first air distribution plate, and the heat insulation part is located at one end of the first air distribution plate close to the output detection component.

4. The release paper coating, spraying and drying device according to claim 1, characterized in that, The preheating feeding component includes an exhaust cover and a hot air component. The exhaust cover is arranged at the feeding end of the conveyor line. An exhaust port is arranged at the top of the exhaust cover. An exhaust component is arranged on the exhaust port. The hot air component is arranged below the conveying surface of the conveyor line, and the air outlet of the hot air component faces the conveying surface of the conveyor line. A second air distribution plate is arranged between the hot air component and the conveying surface of the conveyor line.

5. A release paper coating, spraying and drying device according to claim 4, characterized in that, A sealing cover is arranged at the inlet end of the exhaust cover. The sealing cover extends outwards towards the feeding end of the conveyor line.

6. The release paper coating, spraying and drying device according to claim 1, wherein, The output detection component includes a discharging machine frame. The discharging machine frame is arranged at the discharging end of the conveyor line. A cold air component, a first image shooting component and a second image shooting component are sequentially arranged in the discharging machine frame above the conveyor line along the transmission direction of the conveyor line. The first image shooting component and the second image shooting component are electrically connected to the preheating feeding component and the drying component respectively.

7. The release paper coating, spraying and drying device according to claim 6, characterized in that, The cold air assembly includes two air coolers that are opposite to each other in position, and the two air coolers are respectively arranged on the discharge rack; the first image capturing assembly includes a first transverse movement module, a first sliding frame is slidably connected to the first transverse movement module, and a first capturing unit and a first lighting unit are respectively arranged on the first sliding frame; the second image capturing assembly includes a second transverse movement module, a second sliding frame is slidably connected to the second transverse movement module, and a second capturing unit and a second lighting unit are respectively arranged on the second sliding frame; the first capturing unit and the second capturing unit are respectively located on both sides above the conveyor line, and the first capturing unit and the second capturing unit are respectively electrically connected to the preheating and feeding assembly and the drying assembly.

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