Release paper coating, spraying and drying device

Abstract

The invention relates to the technical field of release paper production equipment, in particular to a release paper coating, spraying and drying device which comprises a conveying line, a preheating feeding assembly used for preheating release paper is arranged at the feeding end of the conveying line, and a drying assembly is arranged at the position, located at the discharging end of the preheating feeding assembly, of the conveying line. A drying channel communicating with the preheating feeding assembly is formed between the drying assembly and the conveying line, and an output detection assembly used for detecting the drying quality of the release paper is arranged at the position, located at the discharging end of the drying channel, of the conveying line. Heat insulation parts are arranged above the two sides of the conveying line in the length direction of the conveying line, 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 conveying line; two heat insulation parts are arranged on the rear section of the drying channel to conduct heat insulation partition on the edges of the two sides of the conveying line. When the release paper passes through the rear section of the drying channel, the areas on the two sides of the release paper enter the relatively low-temperature drying area, and the problems of edge warping, embrittlement and the like are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of release paper production equipment, in particular to a release paper coating spray drying device. Background Art

[0002] During the production process, release paper needs to be coated with a layer of plastic film on its surface. However, the plastic film cannot be cooled quickly after coating, so it needs to be dried using a drying device. Existing drying devices are prone to partial over-drying when drying release paper, especially the areas on the edges of the release paper can be dried faster than other areas in the middle. Often, after the release paper completes the entire drying process, both edges of the release paper have a certain degree of over-drying, which seriously affects the quality of the release paper.

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

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a release paper coating spray drying device, which reasonably divides the drying chamber to effectively avoid the problem of over-drying of the two side edges of the release paper.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A release paper coating spray drying device comprises a conveyor line, wherein a preheating feed component for preheating release paper is arranged at the feed end of the conveyor line, a drying component is arranged at the discharge end of the conveyor line located at the preheating feed component, a drying channel connected to the preheating feed 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 discharge end of the conveyor line located at the drying channel, and the output detection component is electrically connected to the preheating feed component and the drying component respectively; heat insulation parts are respectively arranged above both sides of the conveyor line along the length direction thereof, two of the heat insulation parts are both located in the drying channel, and a low-temperature drying area is formed between the two heat insulation parts and the conveyor line.

[0006] In the release paper coating spray drying device, the drying component includes a plurality of hot air devices distributed along the length direction of the conveyor line, the hot air device is located above the conveyor line, and the air outlet of the hot air device faces the conveying surface of the conveyor line, the air outlet of the hot air device is provided with a uniform wind hood, a buffer cavity is provided in the uniform wind hood, and a plurality of air outlet holes are provided at the bottom of the buffer cavity.

[0007] In the release paper coating spray drying device, a first wind zone is formed at the bottom of the buffer chamber, and second wind zones are respectively arranged on both sides of the first wind zone close to the insulation part, and the number of air outlet holes at the bottom of the first wind zone is greater than the number of air outlet holes at the bottom of the second wind zone.

[0008] In the release paper coating spray drying device, a first air uniforming plate is arranged in the drying channel along its length direction, the first air uniforming plate is located between the air uniforming hood and the conveying line, a plurality of wind shield blocks are distributed on the first air uniforming plate along its length direction, and an air outlet channel is formed between adjacent wind shield blocks; the two heat insulation parts are respectively arranged on both sides of the top of the first air uniforming plate, and both sides of the air outlet channel are at least partially located below the two heat insulation parts.

[0009] In the release paper coating spray drying device, the length of the heat insulation portion is smaller than the length of the first air uniforming plate, and the heat insulation portion is located at one end of the first air uniforming plate close to the output detection component.

[0010] In the release paper coating spray drying device, the cross-sectional area of ​​the heat insulation portion gradually increases along the transmission direction of the conveyor line, and the top of the heat insulation portion is provided with an air guide surface inclined toward the central axis direction of the conveyor line.

[0011] In the release paper coating spray drying device, the preheating feeding component includes an exhaust cover and a hot air component, the exhaust cover is arranged on the feeding end of the conveyor line, the top of the exhaust cover is provided with an exhaust port, the exhaust port is provided with an exhaust component, 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, and a second air uniforming plate is provided between the hot air component and the conveying surface of the conveyor line.

[0012] In the release paper coating spray drying device, a sealing cover is provided at the inlet end of the exhaust cover, and the sealing cover extends outwardly toward the feed end of the conveying line.

[0013] In the release paper coating spray drying device, the output detection component includes a discharging rack, and the discharging rack is arranged on the discharging end of the conveyor line. The discharging rack is located above the conveyor line and is provided with a cold air component, a first image capturing component and a second image capturing component in sequence along the transmission direction of the conveyor line. The first image capturing component and the second image capturing component are electrically connected to the preheating feeding component and the drying component, respectively.

[0014] In the release paper coating spray drying device, the cold air component includes two cold air fans positioned opposite to each other, and the two cold air fans are respectively arranged on the discharging frame; the first image shooting component includes a first transverse movement module, and the first transverse movement module is slidably connected to a first sliding frame, and the first sliding frame is respectively provided with a first shooting unit and a first light-emitting unit; the second image shooting component includes a second transverse movement module, and the second transverse movement module is slidably connected to a second sliding frame, and the second sliding frame is respectively provided with a second shooting unit and a second light-emitting unit; 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 component and the drying component.

[0015] Beneficial effects: The present invention provides a release paper coating spray drying device. The preheating feed component 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 component adopts an efficient hot air circulation system to fully dry the preheated release paper semi-finished product to ensure that the plastic coating layer is dried quickly and evenly. In addition, two insulation parts are set at the rear section of the drying channel to effectively insulate the edges on both sides of the conveyor line and reduce the drying temperature on both sides of the rear section of the drying channel. When the release paper passes through the rear section of the drying channel, the areas on both sides enter the relatively low temperature drying area to avoid quality problems such as edge warping and brittleness caused by excessive drying, thereby effectively improving the overall production quality of the release paper and ensuring that the product reaches the best state in all links. In addition, the output detection component takes the image of the upper surface of the release paper and controls the drying component in combination with the feedback signal to eliminate drying defects in time to improve the production quality of the release paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the release paper coating spray drying device provided by the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the release paper coating spray drying device provided by the present invention is shown in FIG. Figure 2 ; Figure 3 A schematic diagram of the internal structure of the drying component in the release paper coating spray drying device provided by the present invention; Figure 4 A schematic structural diagram of the first air uniforming plate and the air uniforming hood in the release paper coating spray drying device provided by the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the preheating feed assembly in the release paper coating spray drying device provided by the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the output detection component in the release paper coating spray drying device provided by the present invention.

[0017] Explanation 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 uniform air plate, 25- sealing cover, 3- drying assembly, 31- hot air device, 32- uniform air cover, 321- buffer chamber, 322- air outlet, 33- first uniform air plate, 331- wind shield, 4- output detection assembly, 41- discharge rack, 42- cold air assembly, 421- cold air fan, 43- first image shooting assembly, 431- first transverse movement module, 432- first sliding frame, 433- first shooting unit, 434- first light-emitting unit, 44- second image shooting assembly, 441- second transverse movement module, 442- second sliding frame, 443- second light-emitting unit, 5- heat insulation part. DETAILED DESCRIPTION

[0018] The present invention provides a release paper coating spray drying device. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "middle", "inner side", "outer side", etc. are directions 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", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0020] See also Figures 1 to 6The present invention provides a release paper coating spray drying device, comprising a conveyor line 1, wherein a preheating feed component 2 for preheating the release paper is provided at the feed end of the conveyor line 1; the preheating feed component 2 is used to preheat the bottom of the release paper after coating or coating to a certain extent, so that the release paper can achieve the effect of uniform heating in advance before entering the drying component 3, and the drying rate of the coating liquid on the release paper is effectively accelerated; a drying component 3 is provided at the discharge end of the preheating feed component 2 on the conveyor line 1, and the drying component 3 is provided at the discharge end of the preheating feed component 2. A drying channel connected to the preheating feeding component 2 is formed between the component 3 and the conveying line 1. An output detection component 4 for detecting the drying quality of the release paper is arranged on the discharge end of the drying channel on the conveying line 1. The output detection component 4 is electrically connected to the preheating feeding component 2 and the drying component 3 respectively; the preheated release paper semi-finished product is dried by the drying component 3, so that the plastic coating 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, which takes an image of the upper surface of the release paper and compares the captured surface image with the standard reference image to determine whether the drying quality of the release paper meets the quality requirements. If the surface image of the release paper deviates, the corresponding signal can be fed back to the drying component 3 to complete feedback control to eliminate the drying defects of the release paper; insulation parts 5 are respectively provided on the upper sides of the conveyor line 1 along its length direction, and the two insulation parts 5 are both located in the drying channel, and a low-temperature drying area is formed between the two insulation parts 5 and the conveyor line 1; because the drying rate of the two side edges of the release paper during the drying process is faster than the drying rate of the remaining middle area, two insulation parts 5 are provided in the rear section of the drying channel to insulate the two side edges of the conveyor line 1 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, thereby avoiding the problem of over-drying of the two side edges of the release paper after the drying process, and effectively improving the production quality of the release paper.

[0021] 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.

[0022] 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.

[0023] In this embodiment, by means of a plurality of hot air devices 31 distributed along the length direction of the conveyor line 1, it can be ensured that the items on the conveyor line 1 are continuously baked by hot air during the movement, thereby achieving 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 items, thereby improving the drying efficiency. The setting of the uniform wind hood 32 further optimizes the distribution of the hot air. The buffer chamber 321 in the uniform wind hood 32 can slow down the flow rate of the hot air, reduce heat loss and surface damage of the items caused by excessive wind speed. At the same time, the multiple air outlets 322 at the bottom of the buffer chamber 321 can evenly disperse the hot air to various areas on the conveying surface, ensuring that all parts of the items can be fully dried.

[0024] like Figures 1 to 6 As shown, further, a first wind zone is formed at the bottom of the buffer cavity 321, and second wind zones are respectively arranged on both sides of the first wind zone close to the insulation part 5, and the number of air outlet holes 322 at the bottom of the first wind zone is greater than the number of air outlet holes 322 at the bottom of the second wind zone.

[0025] In this embodiment, the buffer chamber 321 achieves precise control of the airflow output by the hot air device 31 by arranging the first air zone and the second air zone and adjusting the number of air outlet holes 322. In the first air zone, due to the large number of air outlet holes 322, the airflow is denser, which can provide a stronger drying effect and effectively improve the drying effect of the middle area of ​​the release paper. The second air zone is located on both sides of the first air zone and has a small number of air outlet holes 322, so the airflow is relatively sparse, which helps to form a soft airflow environment during the drying process, reduce the baking temperature on both sides of the release paper, and avoid the problem of over-drying of the edges of the release paper due to excessive hot air flow.

[0026] In addition, the second wind zone cooperates with the insulation part 5 to effectively reduce the drying temperature of the drying channel, so that the hot air flow rate and hot air temperature in the low-temperature drying zone reach a relatively soft level, effectively isolating the heat exchange between the middle area and the two side areas of the drying channel, and realizing precise control of the release paper drying process, ensuring the uniformity of the entire drying process, and forming special drying partitions according to the drying characteristics of the release paper to avoid the problem of over-drying of the edges of the release paper.

[0027] like Figures 1 to 6 As shown, further, a first air uniforming plate 33 is arranged in the drying channel along its length direction, the first air uniforming plate 33 is located between the air uniforming hood 32 and the conveying line 1, and a plurality of wind shielding blocks 331 are distributed on the first air uniforming plate 33 along its length direction, and an air outlet channel is formed between adjacent wind shielding blocks 331; the two heat insulating parts 5 are respectively arranged on both sides of the top of the first air uniforming plate 33, and both sides of the air outlet channel are at least partially located below the two heat insulating parts 5.

[0028] In this embodiment, by providing a first wind uniforming plate 33 and distributing a plurality of wind shielding blocks 331 thereon along the length direction, the hot air flow can be effectively and evenly distributed. The air outlet channel formed between adjacent wind shielding blocks 331 enables the hot air to be blown more evenly to the release paper on the conveyor line 1, avoiding the problem of local overheating or uneven drying, and improving the drying efficiency and quality.

[0029] Secondly, the two insulation parts 5 are respectively arranged on both sides of the top of the first uniform air plate 33. The 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 insulation part 5, an impact airflow will be formed, and the impact airflows on both sides will escape into the upper horizontal plane of the air outlet channel, thereby also having a certain uniform air effect on the airflow blown down from the middle, avoiding the hot air flow from flowing too fast, and significantly improving the working efficiency, drying quality and thermal energy utilization rate of the drying device.

[0030] In one embodiment, the wind shield block 331 is trapezoidal in shape, and a stop groove is provided on the side of the wind shield block 331 facing the conveyor line 1; the trapezoidal wind shield block 331 is used to improve the smoothness of the airflow during flow, and at the same time, a stop groove is provided at the bottom of the wind shield block 331 to eliminate the backflow problem of the hot air flow.

[0031] 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 arranged between the first uniform air plate 33 and the uniform air cover 32, the second temperature sensor 12 is arranged between the first uniform air plate 33 and the conveying surface of the conveyor line 1, and the third temperature sensor 13 is arranged 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 electrically connected to each of the hot air devices 31 respectively; when in use, the first temperature sensor 11 is used to monitor the upper temperature of the drying channel in real time, and the second temperature sensor 12 is used to monitor the upper temperature of the drying channel in real time. The middle layer temperature of the drying channel is monitored in real time, and the third temperature sensor 13 is used to monitor the lower layer temperature of the drying channel in real time, so that the upper layer temperature, the middle layer temperature and the lower layer temperature are used to accurately control the temperature of the hot air device 31. The upper layer temperature is the outlet temperature of the uniform air hood 32. By monitoring the outlet temperature of the uniform air hood 32, it is possible to check in advance 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. The temperature control of the hot air device 31 is regulated from a macroscopic perspective by three temperatures, thereby realizing dynamic adjustment of the temperature of the drying channel.

[0032] like Figures 1 to 6 As shown, further, the length of the heat insulation part 5 is less than the length of the first uniform air plate 33, and the heat insulation part 5 is located at one end of the first uniform air plate 33 close to the output detection component 4; through the above-mentioned arrangement, the temperature of the heat insulation part 5 can be controlled according to the drying process of the release paper, and all areas of the release paper are dried at a uniform temperature when the release paper is in the front section of the drying channel. 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 area of ​​the release paper, the heat insulation part 5 is used to reduce the drying temperature and hot air rate of the two side edges of the rear section, so that the middle area and edge area of ​​the release paper maintain dry consistency.

[0033] In one embodiment, the length of the heat insulation portion 5 is half the length of the first air uniforming plate 33 .

[0034] like Figures 1 to 6As shown, further, the cross-sectional area of ​​the heat insulation part 5 gradually increases along the transmission direction of the conveyor line 1, and the top of the heat insulation part 5 is provided with an air guide surface inclined toward the central axis direction of the conveyor line 1; 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 zone can be increased in a gradient manner. This method can cool and dry the two side edges of the release paper in a gradient manner, so that the drying effect of the release paper is more uniform and more linear. In addition, by using the air guide surface to improve the flow guiding effect of the heat insulation part 5, the hot air flow on both sides can be more smoothly dissipated to the middle area of ​​the drying channel, further optimizing the drying process.

[0035] like Figures 1 to 6 As shown, further, the preheating feeding component 2 includes an exhaust cover 21 and a hot air component 22, the exhaust cover 21 is arranged on the feeding end of the conveyor line 1, the top of the exhaust cover 21 is provided with an exhaust port, the exhaust port is provided with an exhaust component 23, the hot air component 22 is arranged below the conveying surface of the conveyor line 1, and the air outlet of the hot air component 22 faces the conveying surface of the conveyor line 1, and a second uniform air plate 24 is provided between the hot air component 22 and the conveying surface of the conveyor line 1; by arranging the hot air component 22 below the feeding end of the conveyor line 1, the preheating treatment of the release paper can be realized, and when the release paper enters the exhaust cover along the conveyor line 1, the hot air The hot air blown out by component 22 will contact the bottom surface of the release paper after being evenly distributed by the second air uniformizing plate 24, thereby preheating the release paper and preventing the release paper from curling, bubbling and other problems due to the drastic temperature difference after entering the drying component 3; at the same time, in order to prevent the upper layer temperature of the exhaust hood cavity from being too high, the exhaust port on the top of the exhaust hood is used to exhaust the upper layer of the air in the cavity, so that the upper layer temperature of the exhaust hood cavity is quickly cooled down. When the upper layer temperature of the exhaust hood cavity is too high, the exhaust component 23 can be used to draw the air in the exhaust hood cavity to achieve a rapid cooling effect, and the exhaust component 23 can also prevent the air in the external environment from flowing back into the exhaust hood.

[0036] It should be noted that the hot air component 22 can be an existing heating component such as a hot air blower, a heating wire, etc.; the exhaust component 23 can be an existing fan component.

[0037] like Figures 1 to 6As shown, further, a sealing cover 25 is provided at the inlet end of the exhaust cover 21, and the sealing cover 25 extends outwardly toward the feed end of the conveyor line 1; the sealing cover 25 extending outwardly is used to realize a sealed connection with the front-end coating and laminating equipment, and the sealing cover 25 is connected to the output end of the coating and laminating equipment to complete the docking. The sealing cover 25 is arranged on the output end of the coating and laminating equipment to prevent the release paper semi-finished product from being contaminated by dust during transportation. If the plastic laminating layer on the surface of the release paper is contaminated with too much dust, it will seriously affect the quality of the finished release paper.

[0038] In one embodiment, the sealing cover 25 is an accordion-type sealing cover 25, and the foldable and stretchable characteristics of the accordion-type sealing cover 25 are used to meet the installation requirements of different types of coating and laminating equipment.

[0039] like Figures 1 to 6 As shown, further, the output detection component 4 includes a discharging frame 41, and the discharging frame 41 is arranged on the discharging end of the conveyor line 1. The discharging frame 41 is located above the conveyor line 1 and is provided with a cold air component 42, a first image capturing component 43 and a second image capturing component 44 in sequence along the transmission direction of the conveyor line 1. The first image capturing component 43 and the second image capturing component 44 are electrically connected to the preheating feeding component 2 and the drying component 3, respectively.

[0040] In this embodiment, after the dried release paper enters the discharge rack 41, the cold air component 42 located above the conveyor line 1 will appropriately cool down the release paper that is in a high-temperature state, so that the surface of the release paper can be quickly solidified, thereby improving the shooting accuracy of the first image shooting component 43 and the second image shooting component 44, and preventing the hot air flow generated by the high temperature from affecting the shooting quality of the first image shooting component 43 and the second image shooting component 44. The first shooting component and the second shooting component continuously shoot the surface of the release paper from different angles to judge the drying quality of the surface coating layer of the release paper in real time, and judge the finished product quality of the middle area and edge area of ​​the release paper from multiple angles. If the image in the middle area of ​​the release paper is found to be abnormal, it means that the middle area of ​​the release paper may not be completely dried or over-dried. At this time, it is necessary to promptly feedback the signal to the preheating feeding component 2 and / or the drying component 3 to adjust the overall heating temperature. Similarly, if the image in the edge area of ​​the release paper is found to be abnormal, it means that the edge area of ​​the release paper may not be completely dried or over-dried. At this time, it is also necessary to promptly feedback the signal to the preheating feeding component 2 and / or the drying component 3 to adjust the overall heating temperature.

[0041] like Figures 1 to 6As shown, further, the cold air component 42 includes two cold air fans 421 in opposite positions, and the two cold air fans 421 are respectively arranged on the discharging frame 41; the first image shooting component 43 includes a first transverse moving module 431, and the first transverse moving module 431 is slidably connected with a first sliding frame 432, and the first sliding frame 432 is respectively provided with a first shooting unit 433 and a first light-emitting unit 434; the second image shooting component 44 includes a second transverse moving module 441, and the second transverse moving module 441 is slidably connected with a second sliding frame 442, and the second sliding frame 442 is respectively provided with a second shooting unit (not shown in the figure) and a second light-emitting unit 443; 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 feeding component 2 and the drying component 3.

[0042] In this embodiment, two oppositely positioned cold air fans 421 are used to form a dissipated cold air flow above the conveyor line 1. When the two cold air fans 421 spray cold air flows relative to each other, the two cold air flows will collide with each other. During the collision, the flow rates of the two cold air flows are effectively slowed down to prevent the release paper from being blown by high-speed air flows. At the same time, the cold air flows after the collision will form a dissipated air flow, so that a low-temperature zone is formed in the discharge frame 41. The release paper is properly cooled by the low-temperature zone so that the coating layer on the surface of the release paper can be quickly solidified, thereby improving the image acquisition accuracy. In addition, the first transverse moving module 431 and the second transverse moving module 441 are used to adjust the horizontal positions of the first shooting unit 433 and the second shooting unit 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 kept staggered to ensure that the shooting angles can be diverse. During the shooting process, fill light is provided by the first light emitting unit 434 and the second light emitting unit 443 to improve the imaging quality of the first shooting unit 433 and the second shooting unit.

[0043] In one embodiment, the output detection component 4 also includes a controller, and the first shooting unit 433 and the second shooting unit are electrically connected to the preheating feeding component 2 and the drying component 3 respectively through the controller; the controller can be an existing controller such as an existing microprocessor, a single-chip microcomputer controller, etc.

[0044] It should be noted that the first shooting unit 433 and the second shooting unit may be existing high-speed cameras; the first light-emitting unit 434 and the second light-emitting unit 443 may be existing LED lights.

[0045] In summary, by moderately heating the bottom of the release paper, the preheating feed component 2 significantly speeds up the drying speed of the upper coating liquid and ensures the uniformity and consistency of the drying process, thereby greatly improving production efficiency. The drying component 3 adopts an efficient hot air circulation system to comprehensively dry the preheated release paper semi-finished product to ensure that the plastic coating layer is dried quickly and evenly. The two insulation parts 5 set in the rear section of the drying channel effectively insulate the edges on both sides of the conveyor line 1, reducing the drying temperature on both sides of the rear section of the drying channel. When the release paper passes through the rear section of the drying channel, the areas on both sides enter the relatively low temperature drying area, avoiding quality problems such as edge warping and brittleness caused by excessive drying, thereby effectively improving the overall production quality of the release paper and ensuring that the product reaches the best state in all links. In addition, the output detection component 4 takes the image of the upper surface of the release paper and controls the drying component 3 in combination with the feedback signal to eliminate drying defects in time to improve the production quality of the release paper.

[0046] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. A release paper coating spray drying device, characterized in that: It comprises a conveyor line, wherein a preheating feed component for preheating release paper is arranged at the feed end of the conveyor line, a drying component is arranged at the discharge end of the conveyor line located at the preheating feed component, a drying channel connected with the preheating feed 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 discharge end of the conveyor line located at the drying channel, and the output detection component is electrically connected with the preheating feed component and the drying component respectively; heat insulation parts are arranged respectively on the upper sides of the conveyor line along the length direction thereof, two of the 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.

2. A release paper coating spray drying device according to claim 1, characterized in that: The drying component includes a plurality of hot air devices distributed along the length direction of the conveying line, the hot air devices are located above the conveying line, and the air outlets of the hot air devices face the conveying surface of the conveying line, the air outlets of the hot air devices are provided with a uniform wind hood, a buffer cavity is provided in the uniform wind hood, and a plurality of air outlet holes are provided at the bottom of the buffer cavity.

3. A release paper coating spray drying device according to claim 2, characterized in that: A first wind zone is formed at the bottom of the buffer cavity, and second wind zones are respectively arranged on both sides of the first wind zone close to the insulation portion, and the number of air outlet holes at the bottom of the first wind zone is greater than the number of air outlet holes at the bottom of the second wind zone.

4. A release paper coating spray drying device according to claim 2, characterized in that: A first air uniforming plate is arranged in the drying channel along its length direction, the first air uniforming plate is located between the air uniforming hood and the conveying line, a plurality of wind shielding blocks are distributed on the first air uniforming plate along its length direction, and an air outlet channel is formed between adjacent wind shielding blocks; the two heat insulating parts are respectively arranged on both sides of the top of the first air uniforming plate, and both sides of the air outlet channel are at least partially located below the two heat insulating parts.

5. The release paper coating spray drying device according to claim 4, characterized in that: The length of the heat insulation portion is smaller than the length of the first air uniforming plate, and the heat insulation portion is located at one end of the first air uniforming plate close to the output detection component.

6. The release paper coating spray drying device according to claim 1, characterized in that: The cross-sectional area of ​​the heat insulation portion gradually increases along the transmission direction of the conveyor line, and the top of the heat insulation portion is provided with an air guide surface inclined toward the central axis direction of the conveyor line.

7. The release paper coating spray drying device according to claim 1, characterized in that: The preheating feed assembly includes an exhaust cover and a hot air assembly, the exhaust cover is arranged on the feed end of the conveyor line, the top of the exhaust cover is provided with an exhaust port, the exhaust port is provided with an exhaust assembly, the hot air assembly is arranged below the conveying surface of the conveyor line, and the air outlet of the hot air assembly faces the conveying surface of the conveyor line, and a second air uniforming plate is provided between the hot air assembly and the conveying surface of the conveyor line.

8. The release paper coating spray drying device according to claim 7, characterized in that: A sealing cover is provided at the inlet end of the exhaust cover, and the sealing cover extends outwardly toward the feed end of the conveying line.

9. The release paper coating spray drying device according to claim 1, characterized in that: The output detection component includes a discharging rack, which is arranged on the discharging end of the conveyor line. A cold air component, a first image capturing component and a second image capturing component are sequentially arranged in the discharging rack above the conveyor line and along the transmission direction of the conveyor line. The first image capturing component and the second image capturing component are electrically connected to the preheating feeding component and the drying component, respectively.

10. A release paper coating spray drying device according to claim 9, characterized in that: The cold air component includes two cold air fans positioned opposite to each other, and the two cold air fans are respectively arranged on the discharging frame; the first image shooting component includes a first transverse movement module, and the first transverse movement module is slidably connected with a first sliding frame, and the first sliding frame is respectively provided with a first shooting unit and a first light-emitting unit; the second image shooting component includes a second transverse movement module, and the second transverse movement module is slidably connected with a second sliding frame, and the second sliding frame is respectively provided with a second shooting unit and a second light-emitting unit; 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 component and the drying component.

Images