A multi-layer drying system for thermal plate paper processing and a method of using the same

Abstract

The application discloses a kind of multilayer drying system for heat-sensitive plate paper processing and its using method, it is related to drying system field, including drying oven, several groups of drying module are vertically arranged in drying oven, drying module includes several drying components and heated air components, drying component includes guide roller and plugging unit, several drying holes are opened in guide roller, heated air component can discharge heated air through drying hole, plugging unit includes same direction plugging shell, reverse plugging shell, support shaft and operating shaft.The drying effect of composite fabric is better, the drying power consumption is reduced, and the length of the drying oven is reduced, the floor area of the drying oven is reduced, the economy is improved, the direction of the heated air discharge is constantly changed, the hot air distribution in the drying oven is more uniform, the drying time of the composite fabric is accelerated, the energy efficiency is improved, the heated air is prevented from being directly sprayed at close range to the composite material, the heat-sensitive composite material is prevented from overheating and failing, and the drying effect is improved.

Description

Technical Field

[0001] This invention relates to the field of drying systems, and in particular to a multi-layer drying system for thermal paper processing and its method of use. Background Technology

[0002] Thermal paper is a special type of paper coated with a thermal coating that changes color when heated, enabling the printing of text and images. It is widely used in thermal printers, thermal fax machines, label printers, and other equipment, commonly for printing receipts, labels, tickets, and other similar items. The processing of thermal paper typically involves the following steps: Coating: The thermal coating is evenly applied to the base paper. This step requires precise control of the coating thickness and uniformity to ensure the quality of the thermal paper; Drying: The coated thermal paper needs to undergo a drying process to remove moisture and solvents, allowing the thermal coating to cure; Lamination: Some thermal papers require lamination with other materials (such as plastic film) to increase the paper's strength and durability.

[0003] Chinese patent application CN114440442A discloses a drying device, comprising: a housing assembly having an air inlet, a first receiving cavity, a second receiving cavity, and an air outlet, wherein the air inlet communicates with the air outlet through the first receiving cavity; a fan assembly disposed within the first receiving cavity for conveying airflow from the air inlet to the air outlet; a heating device disposed within the first receiving cavity for heating the airflow entering the first receiving cavity; and electrical components disposed within the first receiving cavity; wherein the first and second receiving cavities are independently configured, and the second receiving cavity is used to accommodate accessories, including an air outlet pipe, effectively solving the problem in the prior art where users or workers are prone to electric shock accidents due to contact with electrical components when operating internal parts of the drying device;

[0004] Chinese patent application CN107726612A discloses a heating and drying oven, including a rectangular cavity structure. One end face of the oven along its length has an air outlet for hot air, and the other side has an air duct for fan-driven airflow. A speed control switch for adjusting the fan speed and heater power is installed on the upper surface of the oven. A mounting plate is horizontally installed inside the oven, and a radiator composed of multiple sets of vertically arranged aluminum fins is mounted on the horizontal platform of the mounting plate. This radiator can be used for heating and drying in enclosed industrial spaces or for domestic heating. By installing the heater inside the radiator and then using a fan to blow air through the radiator to the outside of the oven, the entire heater dissipates heat more quickly, and the fan can instantly remove the heat.

[0005] The above embodiments and prior art also have the following drawbacks:

[0006] Because thermal paper is highly sensitive to temperature, it cannot be dried using high-temperature gases. This results in a longer drying time and a longer drying process, leading to a longer drying chamber with a larger footprint and lower thermal efficiency. The longer drying chamber requires multiple hot air outlets, but the distance between the hot air outlets and the thermal paper is large, and the air outlet angle is fixed, resulting in uneven distribution of hot air inside the drying chamber and reduced drying efficiency.

[0007] Therefore, this application provides a multi-layer drying system for thermal paper processing and its usage method to meet the requirements. Summary of the Invention

[0008] The purpose of this application is to provide a multi-layer drying system for thermal paper processing and its usage method, which has a better drying effect on composite fabrics, reduces drying power consumption, reduces the length of the drying chamber, reduces the floor space of the drying chamber, improves economy, continuously changes the direction of the heated air exhaust to make the hot air distribution in the drying chamber more uniform, speeds up the drying time of composite fabrics, improves energy efficiency, prevents heated air from being sprayed directly onto the composite material at close range, prevents the thermally sensitive composite material from overheating and failing, and improves the drying effect.

[0009] To achieve the above objectives, this application provides the following technical solution: a multi-layer drying system for thermal paper processing, including a drying box, wherein several drying modules are vertically arranged inside the drying box, each drying module includes several drying components and a heating air component, each drying component includes a guide roller and a sealing unit, the guide roller has several drying holes, and the heating air component can discharge heating air through the drying holes;

[0010] The sealing unit includes a co-directional sealing shell, a reverse sealing shell, a support shaft, and an operating shaft. The co-directional sealing shell is sleeved on the reverse sealing shell. The guide roller is fixedly connected to the support shaft and is coaxial with the support shaft. When the support shaft rotates, it can drive the operating shaft to rotate around the support shaft. Both the co-directional sealing shell and the reverse sealing shell are rotatably connected to the support shaft. When the operating shaft rotates, it can drive the co-directional sealing shell and the reverse sealing shell to rotate in opposite directions.

[0011] The drying assembly also includes a locking unit, which includes a locking plate that can be moved to switch between a locked state, an operating state, and an adjustment state.

[0012] In the locked state, the locking plate can lock the support shaft and the operating shaft;

[0013] In operation, both the support shaft and the operating shaft are capable of rotation;

[0014] In the adjustment state, the locking plate locks the operating axis.

[0015] Preferably, the locking unit further includes a support locking block and a support fixing block. The support fixing block is fixedly installed on the support shaft, and the support locking block is fixedly installed on the side of the locking plate near the support fixing block. The support locking block is fixed with a support locking protrusion, and the support fixing block is fixed with a support fixing protrusion.

[0016] When the locking plate is in the locked state, the support locking block abuts against the support fixing block.

[0017] Preferably, the locking unit further includes an operation locking block and an operation fixing block. The operation fixing block is fixedly installed on the operation shaft, and the operation locking block is fixedly installed on the side of the locking plate near the operation fixing block. An operation locking protrusion is fixed on the operation locking block, and an operation fixing protrusion is fixed on the operation fixing block.

[0018] When the locking plate is in the locked state, the operation locking block abuts against the operation fixing block.

[0019] Preferably, the locking unit further includes a connecting fixing ring and a connecting locking block. The connecting fixing ring is fixedly installed on the side wall of the drying oven, and the connecting locking block is fixedly installed on the side of the locking plate near the connecting fixing ring. A connecting fixing protrusion is fixed on the connecting fixing ring, and a connecting locking protrusion is fixed on the connecting locking block.

[0020] When the locking plate is in the locked state, the connecting locking block abuts against the connecting fixing ring.

[0021] Preferably, the locking unit further includes an adjusting locking block and an adjusting fixing block. The adjusting fixing block is fixedly mounted on the operating shaft, and the adjusting locking block is fixedly mounted on the side of the locking plate near the adjusting fixing block. The adjusting fixing block is fixed with an adjusting fixing protrusion, and the adjusting locking block is fixed with an adjusting locking protrusion.

[0022] When the locking plate is in the adjustment state, the adjustment locking block abuts against the adjustment fixing block;

[0023] The locking plate is sleeved on the operating shaft and the support shaft and slides in cooperation with the operating shaft and the support shaft;

[0024] When the locking plate is in the operating state, the locking plate is located between the operating fixing block and the adjusting fixing block.

[0025] Preferably, the drying assembly further includes two fixed side plates, which are rotatably connected to both sides of the guide roller. The support shaft is fixedly mounted on the fixed side plates, and the operating shaft is rotatably connected to the fixed side plates. The drying assembly also includes a rotating unit, which includes a locking threaded rod, a locking rotating block, a supporting rotating block, and an operating rotating block. The locking threaded rod is rotatably connected to the corresponding fixed side plate. The locking plate is sleeved on the locking threaded rod and threadedly connected to it. The locking rotating block is fixedly mounted on the locking threaded rod and has an anti-slip groove. The supporting rotating block is fixedly mounted on the support shaft, and the operating rotating block is fixedly mounted on the operating shaft.

[0026] Preferably, the sealing unit further includes a reverse driving gear, a reverse driven gear, a co-directional driving pulley, a co-directional driven pulley, and a co-directional belt. The reverse driving gear is fixedly mounted on the operating shaft, the reverse driven gear is rotatably connected to the support shaft, a reverse rod is fixedly mounted on the reverse driven gear, the reverse rod is fixedly mounted on the reverse sealing shell, the co-directional driving pulley is fixedly mounted on the operating shaft, the co-directional driven pulley is rotatably connected to the support shaft, the co-directional belt is connected to the co-directional driving pulley and the co-directional driven pulley, a co-directional rod is fixedly mounted on the co-directional driven pulley, and the co-directional rod is fixedly mounted on the co-directional sealing shell.

[0027] Preferably, the drying assembly further includes a drying air pipe, which is rotatably connected and communicates with the guide roller. The guide roller has a vent on the fixed side plate corresponding to the drying air pipe. The heating air assembly includes a drying main pipe, a drying air pump, and a heating wire. The drying air pipes in several drying assemblies are all fixed and communicated with the drying main pipe. The output end of the drying air pump is fixed and communicated with the drying main pipe. The heating wire is fixedly installed inside the drying main pipe.

[0028] Preferably, the drying module further includes several driving components, each including a drive motor and a drive belt. The drive motor is fixedly installed on one side of the drying chamber. The drive belt includes a drive pulley, a drive driven pulley, and a drive belt. The drive pulley is fixedly installed at the output end of the drive motor, and the drive driven pulley is fixedly installed on the corresponding guide roller. The drive belt connects to the drive pulley and the drive driven pulley. A feed inlet is provided on one side of the drying chamber, and a discharge outlet is provided on the other side. An exhaust vent is provided at the top of the drying chamber. An exhaust pipe is fixedly installed at the top of the drying chamber and communicates with the exhaust vent. An exhaust hood is fixedly installed at the top of the drying chamber and communicates with the exhaust pipe. An exhaust air pump is fixedly installed at the top of the drying chamber and communicates with the exhaust hood.

[0029] A multi-layer drying method for thermal paper processing, using the aforementioned multi-layer drying system for thermal paper processing, includes the following steps:

[0030] The composite material is fed into the drying oven and passes through multiple guide rollers in sequence.

[0031] The heating air assembly introduces heated air into the guide roller, and the heated air is discharged through the drying holes on the guide roller to dry the composite material near the guide roller.

[0032] The co-directional sealing shell and the reverse sealing shell are located inside the guide roller and abut against the guide roller. The guide roller rotates on the co-directional sealing shell and the reverse sealing shell. The co-directional sealing shell and the reverse sealing shell block the guide roller toward the drying hole of the composite material, so that the heated air inside the guide roller will not be sprayed toward the contact part between the composite material and the guide roller.

[0033] When the wrap angles between different guide rollers and composite materials are different, move the locking plate to the operating state, rotate the operating shaft, and the operating shaft will drive the same-direction sealing shell to rotate in the same direction. At the same time, the operating shaft will also drive the opposite-direction sealing shell to rotate in the opposite direction, so that the same-direction sealing shell and the opposite-direction sealing shell move and unfold in opposite directions, thereby increasing the sealing range and adapting to different wrap angles between composite materials and guide rollers.

[0034] When the contact positions between the guide roller and the composite material are different, move the locking plate to the adjustment state, the operating shaft is locked, rotate the support shaft, the support shaft drives the operating shaft to rotate around the support shaft, the operating shaft cannot rotate on its own, thus driving the same-direction sealing shell and the opposite-direction sealing shell to rotate in the same direction, changing the position of the same-direction sealing shell and the opposite-direction sealing shell inside the guide roller, changing the sealing direction, so that it corresponds to the contact position between the guide roller and the composite material.

[0035] When the guide roller rotates to dry the composite material, the locking plate is moved to the locked state, locking the support shaft and the operating shaft so that the sealing direction and sealing range of the same-direction sealing shell and the reverse sealing shell will not change.

[0036] In summary, the technical effects and advantages of this invention are as follows:

[0037] 1. In this invention, the composite material is guided to move in the drying box by vertically multi-layered guide rollers, which increases the movement path of the composite fabric in the drying box, increases the drying time of the composite fabric in the drying box, improves the drying effect of the composite fabric, reduces drying power consumption, reduces the length of the drying box, reduces the floor space of the drying box, and improves economy.

[0038] 2. In this invention, heated air is discharged through the drying holes on the guide roller. As the composite fabric moves on the guide roller, the discharged heated air can quickly contact the composite fabric. Moreover, the drying holes on the guide roller rotate continuously, constantly changing the direction of the discharged heated air, making the hot air distribution in the drying box more uniform, accelerating the drying time of the composite fabric, and improving energy efficiency.

[0039] 3. In this invention, the heating air sprayed towards the contact part between the composite material and the guide roller is blocked by the sealing unit inside the guide roller, which prevents the heating air from being sprayed directly onto the composite material at close range, prevents the heat-sensitive composite material from overheating and failing, and improves the drying effect.

[0040] 4. In this invention, the unidirectional sealing shell and the reverse sealing shell in the sealing unit move and unfold in opposite directions, increasing the sealing range of the hot air discharged from the guide roller, so that different wrap angles of the composite material and the guide roller can be sealed. The unidirectional sealing shell and the reverse sealing shell can rotate in the same direction, changing the position of the unidirectional sealing shell and the reverse sealing shell, thereby adapting to different contact parts between the composite material and the guide roller and improving adaptability. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0043] Figure 2 This is a second three-dimensional structural schematic diagram of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of the drying main pipe, drying air pump, and heating wire in this invention;

[0045] Figure 4 This is a schematic diagram of the drying box and guide rollers in this invention;

[0046] Figure 5 This is a schematic diagram of the drying box and exhaust hood in this invention;

[0047] Figure 6 For the present invention Figure 5 Enlarged view of section A;

[0048] Figure 7 This is a schematic diagram of the guide roller structure in this invention;

[0049] Figure 8 For the present invention Figure 7 Enlarged view of section B;

[0050] Figure 9 This is a schematic diagram of the structure of the support shaft and the operating shaft in this invention;

[0051] Figure 10 For the present invention Figure 9 Enlarged view of section C;

[0052] Figure 11 This is a schematic diagram of the structure of the guide roller and the drying air pipe in this invention;

[0053] Figure 12 For the present invention Figure 11 Enlarged view of section D.

[0054] In the diagram: 1. Drying chamber; 2. Drying assembly; 21. Guide roller; 22. Sealing unit; 221. Same-direction sealing shell; 222. Reverse sealing shell; 223. Support shaft; 224. Operating shaft; 225. Reverse drive gear; 226. Reverse driven gear; 227. Same-direction drive pulley; 228. Same-direction driven pulley; 229. Same-direction belt; 23. Locking unit; 231. Locking plate; 232. Support locking block; 233. Support fixing block; 234. Operating locking block; 235. Operating fixing block; 236. Connecting fixing ring; 237. Connecting locking block; 238. Adjusting locking block; 239. Adjusting fixing block; 24. Rotating unit; 241. Locking threaded rod; 242. Locking rotating block; 243. Supporting rotating block; 244. Operating rotating block; 25. Drying air pipe; 3. Heating air assembly; 31. Drying main pipe; 32. Drying air pump; 33. Heating wire; 4. Fixing side plate; 5. Drive assembly; 51. Drive motor; 52. Drive belt; 6. Exhaust pipe; 7. Exhaust hood; 8. Exhaust air pump. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Example 1: Reference Figures 1-10 The multi-layer drying system for thermal paper processing shown includes a drying box 1, in which several drying modules are vertically arranged. Each drying module includes several drying components 2 and a heating air component 3. The drying component 2 includes a guide roller 21 and a sealing unit 22. Several drying holes are opened on the guide roller 21. The heating air component 3 can discharge heating air through the drying holes.

[0057] The sealing unit 22 includes a co-directional sealing shell 221, a reverse sealing shell 222, a support shaft 223, and an operating shaft 224. The co-directional sealing shell 221 is sleeved on the reverse sealing shell 222. The guide roller 21 is fixedly connected to the support shaft 223 and is coaxial with the support shaft 223. When the support shaft 223 rotates, it can drive the operating shaft 224 to rotate around the support shaft 223. The co-directional sealing shell 221 and the reverse sealing shell 222 are both rotatably connected to the support shaft 223. When the operating shaft 224 rotates, it can drive the co-directional sealing shell 221 and the reverse sealing shell 222 to rotate in opposite directions.

[0058] The drying assembly 2 also includes a locking unit 23, which includes a locking plate 231. The locking plate 231 can be moved to switch between a locked state, an operating state, and an adjustment state.

[0059] In the locked state, the locking plate 231 can lock the support shaft 223 and the operating shaft 224;

[0060] In operation, both the support shaft 223 and the operating shaft 224 can rotate;

[0061] In the adjustment state, the locking plate 231 locks the operating shaft 224.

[0062] The composite material is introduced into the drying chamber 1 and passes through multiple guide rollers 21 in sequence. Heating air assembly 3 introduces heating air into the guide rollers 21, which then exits through drying holes, drying the composite material near the guide rollers 21. Co-directional sealing shells 221 and reverse sealing shells 222 are located inside the guide rollers 21 and abut against them. The guide rollers 21 rotate on the co-directional sealing shells 221 and reverse sealing shells 222, sealing the drying holes of the guide rollers 21 towards the composite material, preventing the heating air inside the guide rollers 21 from spraying onto the contact area between the composite material and the guide rollers 21. When the wrap angles between different guide rollers 21 and the composite material are different, the locking plate 231 is moved to the operating state, and the operating shaft 224 is rotated. The operating shaft 224 drives the co-directional sealing shells 221 to rotate in the same direction, and simultaneously drives the reverse sealing shells 222 to rotate in the same direction. Conversely, the unidirectional sealing shell 221 and the reverse sealing shell 222 move and unfold in opposite directions, increasing the sealing range and adapting to different wrap angles between the composite material and the guide roller 21. When the contact positions between the guide roller 21 and the composite material are different, the locking plate 231 is moved to the adjustment state, the operating shaft 224 is locked, the support shaft 223 is rotated, and the support shaft 223 drives the operating shaft 224 to rotate around the support shaft 223. The operating shaft 224 cannot rotate on its own, thus driving the unidirectional sealing shell 221 and the reverse sealing shell 222 to rotate in the same direction, changing the position of the unidirectional sealing shell 221 and the reverse sealing shell 222 within the guide roller 21, changing the sealing direction, so that it corresponds to the contact position between the guide roller 21 and the composite material. When the guide roller 21 rotates to dry the composite material, the locking plate 231 is moved to the locking state, locking the support shaft 223 and the operating shaft 224, so that the sealing direction and sealing range of the unidirectional sealing shell 221 and the reverse sealing shell 222 will not change.

[0063] The composite material is guided to move within the drying chamber 1 by the vertically multi-layered guide rollers 21, which increases the movement path of the composite fabric within the drying chamber 1, increases the drying time of the composite fabric within the drying chamber 1, improves the drying effect of the composite fabric, reduces drying power consumption, and reduces the length of the drying chamber 1, thereby reducing the floor space occupied by the drying chamber 1 and improving economic efficiency.

[0064] Heated air is discharged through the drying holes on the guide roller 21. As the composite fabric moves on the guide roller 21, the discharged heated air can quickly contact the composite fabric. Furthermore, the drying holes on the guide roller 21 rotate continuously, constantly changing the direction of the discharged heated air, making the hot air distribution in the drying chamber 1 more uniform, accelerating the drying time of the composite fabric, and improving energy efficiency.

[0065] The sealing unit 22 blocks the heating air sprayed towards the contact part between the composite material and the guide roller 21 within the guide roller 21, preventing the heating air from being sprayed directly onto the composite material at close range, preventing the heat-sensitive composite material from overheating and failing, and improving the drying effect.

[0066] The unidirectional sealing shell 221 and the anti-directional sealing shell 222 in the sealing unit 22 move and unfold in opposite directions, increasing the sealing range of the hot air discharged from the guide roller 21, so that different wrap angles of the composite material and the guide roller 21 can be sealed. The unidirectional sealing shell 221 and the anti-directional sealing shell 222 can rotate in the same direction, changing their positions, thereby adapting to different contact parts between the composite material and the guide roller 21 and improving adaptability.

[0067] At the corner of the composite material, the wrap angle between the composite material and the corresponding guide roller 21 increases and the different corners are different. The contact points with the guide roller 21 are different. By adjusting the sealing range and sealing position, it is possible to adapt to different wrap angles and contact positions between the composite material and the guide roller 21, so that the contact position between the composite material and the guide roller 21 will not be overheated by the heating air directly sprayed from the corresponding guide roller 21.

[0068] Example 2, refer to Figures 1-10 Unlike the above embodiments, the locking unit 23 also includes a support locking block 232 and a support fixing block 233. The support fixing block 233 is fixedly installed on the support shaft 223, and the support locking block 232 is fixedly installed on the side of the locking plate 231 near the support fixing block 233. A support locking protrusion is fixed on the support locking block 232, and a support fixing protrusion is fixed on the support fixing block 233.

[0069] When the locking plate 231 is in the locked state, the supporting locking block 232 abuts against the supporting fixing block 233.

[0070] When the locking plate 231 is in the locked state, the supporting locking block 232 and the supporting fixing block 233 abut against each other, the supporting locking protrusion and the supporting fixing protrusion mesh with each other, the supporting fixing block 233 cannot rotate, and thus the supporting shaft 223 cannot rotate.

[0071] Example 3, referring to Figures 1-10 Unlike the above embodiments, the locking unit 23 also includes an operation locking block 234 and an operation fixing block 235. The operation fixing block 235 is fixedly installed on the operation shaft 224, and the operation locking block 234 is fixedly installed on the side of the locking plate 231 near the operation fixing block 235. An operation locking protrusion is fixed on the operation locking block 234, and an operation fixing protrusion is fixed on the operation fixing block 235.

[0072] When the locking plate 231 is in the locked state, the operating locking block 234 abuts against the operating fixing block 235.

[0073] When the locking plate 231 is in the locked state, the operating locking block 234 and the operating fixing block 235 abut against each other, and the operating locking protrusion and the operating fixing protrusion mesh with each other. The operating fixing block 235 cannot rotate, so the operating shaft 224 cannot rotate.

[0074] Example 4, refer to Figures 1-10 Unlike the above embodiments, the locking unit 23 also includes a connecting fixing ring 236 and a connecting locking block 237. The connecting fixing ring 236 is fixedly installed on the side wall of the drying oven 1, and the connecting locking block 237 is fixedly installed on the side of the locking plate 231 near the connecting fixing ring 236. A connecting fixing protrusion is fixed on the connecting fixing ring 236, and a connecting locking protrusion is fixed on the connecting locking block 237.

[0075] When the locking plate 231 is in the locked state, the connecting locking block 237 abuts against the connecting fixing ring 236.

[0076] When the locking plate 231 is in the locked state, the connecting locking protrusion and the connecting fixing protrusion engage with each other, preventing the locking plate 231 from rotating. The locking plate 231 also locks the supporting fixing block 233 and the operating fixing block 235, thereby preventing the supporting shaft 223 and the operating shaft 224 from rotating. This ensures that the positions of the same-direction sealing shell 221 and the opposite-direction sealing shell 222 do not change, thus improving stability.

[0077] Example 5, refer to Figures 1-10 Unlike the above embodiments, the locking unit 23 also includes an adjusting locking block 238 and an adjusting fixing block 239. The adjusting fixing block 239 is fixedly installed on the operating shaft 224, and the adjusting locking block 238 is fixedly installed on the locking plate 231 on the side near the adjusting fixing block 239. The adjusting fixing block 239 is fixedly provided with an adjusting fixing protrusion, and the adjusting locking block 238 is fixedly provided with an adjusting locking protrusion.

[0078] When the locking plate 231 is in the adjustment state, the adjusting locking block 238 abuts against the adjusting fixing block 239;

[0079] The locking plate 231 is sleeved on the operating shaft 224 and the support shaft 223 and slides in cooperation with the operating shaft 224 and the support shaft 223;

[0080] When the locking plate 231 is in the operating state, the locking plate 231 is located between the operating fixing block 235 and the adjusting fixing block 239.

[0081] The movement of the locking plate 231 causes the support locking block 232, the operation locking block 234 and the connecting locking block 237 to move, thereby releasing them from locking the operation shaft 224 and the support shaft 223. At this time, rotating the operation shaft 224 can cause the same-direction sealing shell 221 and the opposite-direction sealing shell 222 to move in opposite directions, increasing the sealing range.

[0082] Then, the locking plate 231 continues to move, and the adjusting locking block 238 on the locking plate 231 abuts against the adjusting fixing block 239. The adjusting locking protrusion engages with the adjusting fixing protrusion, locking the adjusting fixing block 239, thereby locking the operating shaft 224. At this time, the support shaft 223 is rotated, and the support shaft 223 drives the operating shaft 224 to rotate around the support shaft 223, causing the same-direction sealing shell 221 and the reverse sealing shell 222 to rotate in the same direction and change their positions, adjusting the sealing position. Moreover, the operating shaft 224 will not rotate during the movement, so it will not cause the sealing range of the same-direction sealing shell 221 and the reverse sealing shell 222 to change.

[0083] Example 6, refer to Figures 1-10 Unlike the above embodiments, the drying assembly 2 also includes two fixed side plates 4, which are rotatably connected to both sides of the guide roller 21. The support shaft 223 is fixedly installed on the fixed side plate 4, and the operating shaft 224 is rotatably connected to the fixed side plate 4. The drying assembly 2 also includes a rotating unit 24, which includes a locking threaded rod 241, a locking rotating block 242, a supporting rotating block 243, and an operating rotating block 244. The locking threaded rod 241 is rotatably connected to the corresponding fixed side plate 4. The locking plate 231 is sleeved on the locking threaded rod 241 and threadedly connected to the locking threaded rod 241. The locking rotating block 242 is fixedly installed on the locking threaded rod 241 and has an anti-slip groove. The supporting rotating block 243 is fixedly installed on the supporting shaft 223, and the operating rotating block 244 is fixedly installed on the operating shaft 224.

[0084] Rotate the locking threaded rod 241, and the locking plate 231 moves on the locking threaded rod 241, so that the locking plate 231 switches between the locked state, the operating state and the adjustment state.

[0085] Example 7, referring to Figures 1-10 Unlike the above embodiments, the sealing unit 22 further includes a reverse driving gear 225, a reverse driven gear 226, a co-directional driving pulley 227, a co-directional driven pulley 228, and a co-directional belt 229. The reverse driving gear 225 is fixedly mounted on the operating shaft 224, the reverse driven gear 226 is rotatably connected to the support shaft 223, a reverse rod is fixedly mounted on the reverse driven gear 226, the reverse rod is fixedly mounted on the reverse sealing shell 222, the co-directional driving pulley 227 is fixedly mounted on the operating shaft 224, the co-directional driven pulley 228 is rotatably connected to the support shaft 223, the co-directional belt 229 is connected to the co-directional driving pulley 227 and the co-directional driven pulley 228, a co-directional rod is fixedly mounted on the co-directional driven pulley 228, and the co-directional rod is fixedly mounted on the co-directional sealing shell 221.

[0086] When the operating shaft 224 rotates, it drives the reverse drive gear 225 to rotate, which in turn drives the reverse driven gear 226 to rotate in the opposite direction. The reverse driven gear 226 drives the reverse sealing shell 222 to rotate on the support shaft 223 via the reverse rod. At the same time, the operating shaft 224 drives the same-direction drive pulley 227 to rotate, which in turn drives the same-direction belt 229 to rotate. The same-direction belt 229 causes the same-direction driven pulley 228 to rotate, which in turn drives the same-direction sealing shell 221 to rotate via the same-direction rod. This causes the reverse sealing shell 222 and the same-direction sealing shell 221 to rotate in opposite directions, thus adjusting the sealing range.

[0087] Example 8, referring to Figures 1-10 Unlike the above embodiments, the drying assembly 2 also includes a drying air pipe 25, which is rotatably connected to and communicates with the guide roller 21. The guide roller 21 has a vent on the fixed side plate 4 on the side corresponding to the drying air pipe 25. The heating air assembly 3 includes a drying main pipe 31, a drying air pump 32, and a heating wire 33. The drying air pipes 25 in several drying assemblies 2 are all fixed and communicated with the drying main pipe 31. The output end of the drying air pump 32 is fixed and communicated with the drying main pipe 31. The heating wire 33 is fixedly installed inside the drying main pipe 31.

[0088] The drying air pump 32 introduces external gas into the drying main pipe 31, the heating wire 33 heats the gas in the drying main pipe 31, the drying main pipe 31 introduces the heated gas into the drying air pipe 25, the drying air pipe 25 introduces the heated air into the guide roller 21 and discharges it through the drying hole.

[0089] Example 9, referring to Figures 1-10 Unlike the above embodiments, the drying module also includes several drive components 5. Each drive component 5 includes a drive motor 51 and a drive belt 52. The drive motor 51 is fixedly installed on one side of the drying chamber 1. The drive belt 52 includes a drive pulley, a drive driven pulley, and a drive belt. The drive pulley is fixedly installed at the output end of the drive motor 51. The drive driven pulley is fixedly installed on the corresponding guide roller 21. The drive belt is connected to the drive pulley and the drive driven pulley. A feed inlet is provided on one side of the drying chamber 1, and a discharge outlet is provided on the other side. An exhaust port is provided on the top of the drying chamber 1. An exhaust pipe 6 is fixedly installed on the top of the drying chamber 1 and communicates with the exhaust port. An exhaust hood 7 is fixedly installed on the top of the drying chamber 1 and communicates with the exhaust pipe 6. An exhaust air pump 8 is fixedly installed on the top of the drying chamber 1 and communicates with the exhaust hood 7.

[0090] The drive motor 51 drives the drive pulley to rotate, which in turn drives the drive belt to rotate. The drive belt causes the drive pulley to rotate, which in turn drives the corresponding guide roller 21 to rotate, thereby moving the composite material. The guide roller 21 rotates on the drying air pipe 25 but does not cause the drying air pipe 25 to rotate.

[0091] The exhaust air pump 8 draws the gas in the drying chamber 1 out through the exhaust pipe 6 and the exhaust hood 7, so that the humid gas evaporated in the drying chamber 1 is discharged, thereby reducing the humidity in the drying chamber 1 and improving the drying efficiency.

[0092] A multi-layer drying method for thermal paper processing, using the aforementioned multi-layer drying system for thermal paper processing, includes the following steps:

[0093] The composite material is fed into the drying oven 1 and passes through multiple guide rollers 21 in sequence;

[0094] The heating air assembly 3 introduces heating air into the guide roller 21, and the heating air is discharged through the drying holes on the guide roller 21 to dry the composite material near the guide roller 21.

[0095] The co-directional sealing shell 221 and the reverse sealing shell 222 are located inside the guide roller 21 and abut against the guide roller 21. The guide roller 21 rotates on the co-directional sealing shell 221 and the reverse sealing shell 222. The co-directional sealing shell 221 and the reverse sealing shell 222 seal the guide roller 21 toward the drying hole of the composite material, so that the heating air inside the guide roller 21 will not be sprayed toward the contact part between the composite material and the guide roller 21.

[0096] When the wrap angles between different guide rollers 21 and the composite material are different, move the locking plate 231 to the operating state, rotate the operating shaft 224, and the operating shaft 224 drives the same-direction sealing shell 221 to rotate in the same direction. At the same time, the operating shaft 224 also drives the opposite-direction sealing shell 222 to rotate in the opposite direction, so that the same-direction sealing shell 221 and the opposite-direction sealing shell 222 move and unfold in opposite directions, thereby increasing the sealing range and adapting to different wrap angles between the composite material and the guide roller 21.

[0097] When the contact position between the guide roller 21 and the composite material is different, move the locking plate 231 to the adjustment state, the operating shaft 224 is locked, rotate the support shaft 223, the support shaft 223 drives the operating shaft 224 to rotate around the support shaft 223, the operating shaft 224 cannot rotate on its own, thereby driving the same-direction sealing shell 221 and the opposite-direction sealing shell 222 to rotate in the same direction, changing the position of the same-direction sealing shell 221 and the opposite-direction sealing shell 222 in the guide roller 21, changing the sealing direction, so that it corresponds to the contact position between the guide roller 21 and the composite material;

[0098] When the guide roller 21 rotates to dry the composite material, the locking plate 231 is moved to the locked state, locking the support shaft 223 and the operating shaft 224, so that the sealing direction and sealing range of the same-direction sealing shell 221 and the opposite-direction sealing shell 222 will not change.

[0099] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer drying system for thermal paper processing, comprising a drying chamber, characterized in that: The drying chamber is vertically arranged with several sets of drying modules. Each drying module includes several drying components and a heating air component. Each drying component includes guide rollers and a sealing unit. The guide rollers have several drying holes. The heating air component can discharge heated air through the drying holes. The sealing unit includes a co-directional sealing shell, a reverse sealing shell, a support shaft, and an operating shaft. The co-directional sealing shell is sleeved on the reverse sealing shell. The guide roller is fixedly connected to the support shaft and is coaxial with the support shaft. When the support shaft rotates, it can drive the operating shaft to rotate around the support shaft. Both the co-directional sealing shell and the reverse sealing shell are rotatably connected to the support shaft. When the operating shaft rotates, it can drive the co-directional sealing shell and the reverse sealing shell to rotate in opposite directions. The drying assembly also includes a locking unit, which includes a locking plate that can be moved to switch between a locked state, an operating state, and an adjustment state. In the locked state, the locking plate can lock the support shaft and the operating shaft; In operation, both the support shaft and the operating shaft are capable of rotation; In the adjustment state, the locking plate locks the operating axis.

2. The multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The locking unit further includes a support locking block and a support fixing block. The support fixing block is fixedly installed on the support shaft, and the support locking block is fixedly installed on the side of the locking plate near the support fixing block. The support locking block is fixed with a support locking protrusion, and the support fixing block is fixed with a support fixing protrusion. When the locking plate is in the locked state, the support locking block abuts against the support fixing block.

3. The multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The locking unit further includes an operation locking block and an operation fixing block. The operation fixing block is fixedly installed on the operation shaft, and the operation locking block is fixedly installed on the side of the locking plate near the operation fixing block. An operation locking protrusion is fixed on the operation locking block, and an operation fixing protrusion is fixed on the operation fixing block. When the locking plate is in the locked state, the operation locking block abuts against the operation fixing block.

4. The multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The locking unit further includes a connecting fixing ring and a connecting locking block. The connecting fixing ring is fixedly installed on the side wall of the drying oven, and the connecting locking block is fixedly installed on the side of the locking plate near the connecting fixing ring. A connecting fixing protrusion is fixed on the connecting fixing ring, and a connecting locking protrusion is fixed on the connecting locking block. When the locking plate is in the locked state, the connecting locking block abuts against the connecting fixing ring.

5. A multi-layer drying system for thermal paper processing according to claim 3, characterized in that: The locking unit further includes an adjusting locking block and an adjusting fixing block. The adjusting fixing block is fixedly installed on the operating shaft, and the adjusting locking block is fixedly installed on the side of the locking plate near the adjusting fixing block. The adjusting fixing block is fixed with an adjusting fixing protrusion, and the adjusting locking block is fixed with an adjusting locking protrusion. When the locking plate is in the adjustment state, the adjustment locking block abuts against the adjustment fixing block; The locking plate is sleeved on the operating shaft and the support shaft and slides in cooperation with the operating shaft and the support shaft; When the locking plate is in the operating state, the locking plate is located between the operating fixing block and the adjusting fixing block.

6. The multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The drying assembly further includes two fixed side plates, which are rotatably connected to both sides of the guide roller. The support shaft is fixedly mounted on the fixed side plates, and the operating shaft is rotatably connected to the fixed side plates. The drying assembly also includes a rotating unit, which includes a locking threaded rod, a locking rotating block, a supporting rotating block, and an operating rotating block. The locking threaded rod is rotatably connected to the corresponding fixed side plate. The locking plate is sleeved on the locking threaded rod and threadedly connected to it. The locking rotating block is fixedly mounted on the locking threaded rod and has an anti-slip groove. The supporting rotating block is fixedly mounted on the support shaft, and the operating rotating block is fixedly mounted on the operating shaft.

7. The multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The sealing unit further includes a reverse driving gear, a reverse driven gear, a co-directional driving pulley, a co-directional driven pulley, and a co-directional belt. The reverse driving gear is fixedly mounted on the operating shaft, the reverse driven gear is rotatably connected to the support shaft, a reverse rod is fixedly mounted on the reverse driven gear, and the reverse rod is fixedly mounted on the reverse sealing shell. The co-directional driving pulley is fixedly mounted on the operating shaft, the co-directional driven pulley is rotatably connected to the support shaft, the co-directional belt is connected to the co-directional driving pulley and the co-directional driven pulley, a co-directional rod is fixedly mounted on the co-directional driven pulley, and the co-directional rod is fixedly mounted on the co-directional sealing shell.

8. A multi-layer drying system for thermal paper processing according to claim 6, characterized in that: The drying assembly also includes a drying air pipe, which is rotatably connected to and communicates with the guide roller. The guide roller has a vent on the fixed side plate corresponding to the drying air pipe. The heating air assembly includes a drying main pipe, a drying air pump, and a heating wire. The drying air pipes in several drying assemblies are all fixed and connected to the drying main pipe. The output end of the drying air pump is fixed and connected to the drying main pipe. The heating wire is fixedly installed inside the drying main pipe.

9. A multi-layer drying system for thermal paper processing according to claim 1, characterized in that: The drying module also includes several drive components, each including a drive motor and a drive belt. The drive motor is fixedly mounted on one side of the drying chamber. The drive belt includes a drive pulley, a drive driven pulley, and a drive belt. The drive pulley is fixedly mounted on the output end of the drive motor, and the drive driven pulley is fixedly mounted on the corresponding guide roller. The drive belt connects the drive pulley and the drive driven pulley. A feed inlet is located on one side of the drying chamber, and a discharge outlet is located on the other side. An exhaust vent is located on the top of the drying chamber. An exhaust pipe is fixedly mounted on the top of the drying chamber and communicates with the exhaust vent. An exhaust hood is fixedly mounted on the top of the drying chamber and communicates with the exhaust pipe. An exhaust air pump is fixedly mounted on the top of the drying chamber and communicates with the exhaust hood.

10. A multi-layer drying method for processing thermal paper, using the multi-layer drying system for processing thermal paper as described in any one of claims 1-9, characterized in that: Includes the following steps: The composite material is fed into the drying oven and passes through multiple guide rollers in sequence. The heating air assembly introduces heated air into the guide roller, and the heated air is discharged through the drying holes on the guide roller to dry the composite material near the guide roller. The co-directional sealing shell and the reverse sealing shell are located inside the guide roller and abut against the guide roller. The guide roller rotates on the co-directional sealing shell and the reverse sealing shell. The co-directional sealing shell and the reverse sealing shell block the guide roller toward the drying hole of the composite material, so that the heated air inside the guide roller will not be sprayed toward the contact part between the composite material and the guide roller. When the wrap angles between different guide rollers and composite materials are different, move the locking plate to the operating state, rotate the operating shaft, and the operating shaft will drive the same-direction sealing shell to rotate in the same direction. At the same time, the operating shaft will also drive the opposite-direction sealing shell to rotate in the opposite direction, so that the same-direction sealing shell and the opposite-direction sealing shell move and unfold in opposite directions, thereby increasing the sealing range and adapting to different wrap angles between composite materials and guide rollers. When the contact positions between the guide roller and the composite material are different, move the locking plate to the adjustment state, the operating shaft is locked, rotate the support shaft, the support shaft drives the operating shaft to rotate around the support shaft, the operating shaft cannot rotate on its own, thus driving the same-direction sealing shell and the opposite-direction sealing shell to rotate in the same direction, changing the position of the same-direction sealing shell and the opposite-direction sealing shell inside the guide roller, changing the sealing direction, so that it corresponds to the contact position between the guide roller and the composite material. When the guide roller rotates to dry the composite material, the locking plate is moved to the locked state, locking the support shaft and the operating shaft so that the sealing direction and sealing range of the same-direction sealing shell and the reverse sealing shell will not change.

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