Drying equipment for display screen production

Abstract

The drying equipment for display screen production comprises a box body and an L-shaped positioning clamp, the two ends of the box body are each provided with two in-out notches, transmission mechanisms are movably installed at the two ends of the box body, the outer sides of the transmission mechanisms are movably sleeved with heat-resisting flexible conveying belts, and a protection box is fixedly installed at the top of the box body; a sealing partition plate is fixedly installed in the protection box, and an air exhaust mechanism is arranged in the protection box. According to the scheme, the roller supporting mechanism plays a role in supporting the heat-resistant flexible conveying belt and transferring airflow in a balanced mode, the airflow penetrates through the hollow branch pipes and takes out heat generated by the electric heating wires, and the airflow is exhausted through the air outlet holes; therefore, hot air flow is promoted to be in uniform contact with the display screen at the top of the heat-resistant flexible conveying belt through the air holes so as to assist in uniform drying, the effect of synchronous supporting and uniform air flow guiding is provided relatively stably, and the uniformity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen production and drying equipment, in particular to a drying equipment for display screen production. Background Art

[0002] Display screens refer to various electronic devices that present images, text, videos and other information through display technology. They need to be cured, dried or solvent removed through a drying process during the production process to ensure performance and quality. Core features: A variety of materials, including glass substrates, flexible films (such as PI films), PCB boards, optical adhesives (OCA), coating materials (such as photoresists, phosphors), etc. Key to the process: Drying is a key link in display screen manufacturing (such as panel lamination, coating, and printing). Parameters such as temperature, time, and airflow need to be controlled to avoid material deformation, bubbles, or performance degradation. Application areas: Covering the production of various display technologies such as LCD, OLED, Mini / MicroLED, such as mobile phone screens, TV screens, and car screens.

[0003] During the production of display screens, the production process contains solvents or adhesives used for the display screens. If these liquids are not dried, they will evaporate inside the display screen during use, affecting the quality of the product. Drying equipment is used in this process. However, when using existing drying equipment, a single drying equipment is difficult to adapt to the drying operations of multiple materials and cannot dry display video accessories or display screen bodies of different sizes. The thermal efficiency of traditional hot air drying furnaces is only 60%-70%, and a large amount of heat is dissipated through the exhaust vents, thereby reducing the drying efficiency and wasting a lot of heat. Based on this, a drying equipment for display screen production is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a drying device for display screen production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drying device for display screen production, comprising a box body and an L-shaped positioning clamp, two entry and exit slots are provided at both ends of the box body, a transmission mechanism is movably installed at both ends of the box body, a heat-resistant flexible conveyor belt is movably sleeved on the outer side of the transmission mechanism, a protection box is fixedly installed on the top of the box body, a sealing partition is fixedly installed inside the protection box, an exhaust mechanism is provided inside the protection box, an air filter mechanism is provided inside the protection box, a synchronous hydraulic telescopic mechanism is provided on the top of the box body, a plurality of roller support mechanisms are movably installed inside the box body, and two sealing mechanisms are fixedly installed on the outer sides of both ends of the box body.

[0006] A plurality of ventilation holes are provided inside the heat-resistant flexible conveyor belt, and synchronous transmission tooth grooves are provided on the inner walls on both sides of the heat-resistant flexible conveyor belt. Embedded nuts are fixedly installed inside the ventilation holes.

[0007] The roller support mechanism includes a hollow branch tube, a plurality of air outlet holes are opened inside the hollow branch tube, and the outer sides of both ends of the hollow branch tube are movably sleeved with concave brackets through bearings, and the concave brackets are symmetrically fixedly installed on the inner wall of the box body, and the outer side of the hollow branch tube is fixedly sleeved with a hollow stainless steel mesh roller, and the outer sides of both ends of the hollow stainless steel mesh roller are fixedly sleeved with a synchronous gear sleeve, and the inner sides of both ends of the hollow branch tube are sleeved with sealed bearings, and the inner sides of the sealed bearings are sleeved with output pipes, and the opposite ends of the output pipes are fixedly installed with electric heating wires;

[0008] The number of the L-shaped positioning clips is four in a group, the inner side of the top of the L-shaped positioning clip is an arc surface, the bottom of the L-shaped positioning clip is fixedly installed with a bottom mounting piece, and a plurality of bolt holes are opened inside the bottom mounting piece. The L-shaped positioning clip and the bottom mounting piece are both made of flexible materials.

[0009] Preferably, the transmission mechanism includes two transmission rollers, and the outer sides of both ends of the two transmission rollers are movably connected to support frames through bearings, and the support frames are fixedly installed on the outer sides of both ends of the box body. One end of the two transmission rollers is transmission-connected to a synchronous servo motor, and the synchronous servo motor is fixedly installed on the outer side of the support frame. The outer sides of both ends of the two transmission rollers are fixedly connected to transmission roller gear sleeves, and the specifications and dimensions of the transmission roller gear sleeves are adapted to the specifications and dimensions of the synchronous transmission tooth grooves. The heat-resistant flexible conveyor belt is movably connected to the outer sides of the transmission rollers, and the heat-resistant flexible conveyor belt is transmission-connected to the transmission rollers through the synchronous transmission tooth grooves and the transmission roller gear sleeves, and the diameter of the transmission rollers is greater than 50 mm.

[0010] Preferably, the synchronous hydraulic telescopic mechanism includes four hydraulic telescopic rods, which are fixedly sleeved through the box and extend to the interior of the box, the input ends of the four hydraulic telescopic rods are connected with hydraulic transmission pipes, the opposite ends of the hydraulic transmission pipes are connected with oil output cylinders, the hydraulic transmission pipes are symmetrically and evenly distributed on the outside of the protection box, the inner side of the oil output cylinder is movably sleeved with a sealing piston, the top of the sealing piston is fixedly installed with an electric telescopic rod, the top of the electric telescopic rod is fixedly installed with a mounting bracket, the mounting bracket and the oil output cylinder are both fixedly installed on the top cover of the protection box by bolts, the output end of the electric telescopic rod movably penetrates the oil output cylinder and extends to the interior of the oil output cylinder, and the telescopic end of the hydraulic telescopic rod is located at the top of the box inner cavity.

[0011] Preferably, a fixing ring is fixedly sleeved on the outer side of the protection box, a sealing top cover is movably mounted on the top of the protection box, and the sealing top cover is fixed to the top of the protection box by bolts passing through the fixing ring.

[0012] Preferably, the two sealing mechanisms each include two fixed plates, two synchronous electric telescopic rods are fixedly installed on opposite sides of the two fixed plates, the output ends of the two synchronous electric telescopic rods are fixedly installed with mounting strips, silicone sealing strips are fixedly installed on opposite sides of the mounting strips, side reinforcement frames are fixedly installed inside the silicone sealing strips, the mounting strips and silicone sealing strips are both in movable contact with the outer side walls of the box body, middle reinforcement frames are fixedly installed on the outsides of both ends of the box body, middle sealing strips are fixedly installed on the outsides of the middle reinforcement frames, the positions of the middle sealing strips and silicone sealing strips correspond to the positions of the inlet and outlet slots, and the silicone sealing strips and middle sealing strips are located at the top and bottom of the heat-resistant flexible conveyor belt.

[0013] Preferably, the air holes are evenly distributed in a rectangular array inside the heat-resistant flexible conveyor belt, the specifications and dimensions of the bolt hole two are compatible with the specifications and dimensions of the air holes and the embedded nuts, and the heat-resistant flexible conveyor belt is one of a Teflon (PTFE) conveyor belt, a silicone conveyor belt and a glass fiber coated conveyor belt.

[0014] Preferably, the air extraction mechanism includes an air extraction pump, the output end of the air extraction pump is connected to two air outlet pipes, the diversion parts of the two air outlet pipes are connected to the exhaust pipe, the diversion parts of the two air outlet pipes are movably installed with electromagnetic valve 2, the exhaust pipe is fixedly passed through the protection box and extends to the outside of the protection box, the interior of the exhaust pipe is provided with an electromagnetic valve 1, the air extraction pump is fixedly installed at the bottom of the inner cavity of the protection box, the input end of the air extraction pump is connected to the air extraction pipe, the air extraction pipe is fixedly passed through the sealing partition and extends to one side of the sealing partition, the two air outlet pipes are fixedly passed through the sealing partition and the protection box and extend to the interior of the box, the two air outlet pipes are connected to a connecting cross pipe at one end away from the air extraction pump, the two ends of the connecting cross pipe are sealed, and the connecting cross pipe is fixedly installed on the inner wall of the box.

[0015] Preferably, the roller support mechanism is linearly and evenly distributed inside the box, one end of the output pipe is fixedly installed on the connecting transverse pipe, and the output pipe is connected to the inside of the connecting transverse pipe, the synchronous gear sleeve and the hollow stainless steel mesh roller are movably sleeved on the inner side of the synchronous transmission tooth groove and the heat-resistant flexible conveyor belt, the output pipe is linearly connected on the opposite side of the connecting transverse pipe, and the air outlet holes are circumferentially and linearly evenly distributed inside the hollow branch pipe.

[0016] Preferably, the air filter mechanism includes a mounting angle plate, the mounting angle plate is fixedly mounted on the inner wall of the protective box, a plurality of filter cartridges are fixedly sleeved on the inner side of the mounting angle plate, a stainless steel fine mesh frame is movably sleeved on the bottom of the inner cavity of the filter cartridge, an adsorption filter pad is movably placed on the top of the stainless steel fine mesh frame, a hollow air-permeable limit cover is threadedly connected to the top of the filter cartridge, the bottom end of the mounting angle plate is connected to a pressure-equalizing pipe, the mounting angle plates are linearly and evenly distributed on the top of the pressure-equalizing pipe, the bottom of one end of the pressure-equalizing pipe is connected to a plurality of corrugated pipes, and the corrugated pipe The bellows is fixed through the protective box and extends to the top of the inner cavity of the box. The bottom end of the bellows is connected to the air guide cover. The bottom of the air guide cover is fixedly installed with a bottom mounting plate. The four corners of the bottom mounting plate are fixed to the output end of the hydraulic telescopic rod. A number of bolt holes are opened inside the bottom mounting plate. The bolt holes are evenly distributed in a rectangular array inside the bottom mounting plate. The two air outlet pipes are both movably passed through the interior of the bottom mounting plate. The adsorption and filtration pad layer includes a honeycomb activated carbon pad, a zeolite molecular sieve pad and an activated carbon fiber pad from bottom to top.

[0017] Preferably, the top of the L-shaped positioning clip is provided with an arc surface, and the four L-shaped positioning clips are symmetrically and evenly distributed in a rectangular shape. A control panel is installed on the front of the box, and a temperature and humidity sensor is provided at the bottom of the inner cavity of the box.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the device is in use, the user docks the equipment with the production conveyor belt, places the display screen to be operated on the top of the heat-resistant flexible conveyor belt, and starts the transmission mechanism. The transmission mechanism drives the heat-resistant flexible conveyor belt for transmission, and the roller support mechanism supports the heat-resistant flexible conveyor belt to maintain a relatively stable position. When the display screen moves to the inside of the box, the inside of the box has been preheated before, the electric heating wire starts heating, and the air flow circulates through the exhaust mechanism, and then the sealing mechanism extends to seal the inlet and outlet slots and the top and bottom of the heat-resistant flexible conveyor belt, thereby reducing air leakage, and the air filter mechanism absorbs and filters the air flow inside the box to reduce the backflow of the drying solution, and during operation, the air flow inside the box is pumped and controlled and vacuumed according to demand. The overall preheating is uniform, the structural distribution is perfect, the drying efficiency is improved, and the air flow circulation and reduction are realized inside the drying box, which reduces the heat overflow, and can adapt to the drying operations of various materials and display screens of different sizes within a certain range, indirectly improving the working efficiency;

[0019] 2. In this solution, when the exhaust mechanism circulates the air flow inside the box, the air in the area of the air filter mechanism on one side of the sealed partition is exhausted, and the space of the air filter mechanism here is negative pressure. The air flow is extracted from the box through the air filter mechanism, and after being filtered, it is output to the inside of the air outlet pipe through the exhaust pump, and is guided to the inside of the connecting cross pipe through the exhaust pipe, so that the air flow is output to the roller support mechanism through the connecting cross pipe, thereby realizing air circulation between the box and the protective box to reduce heat overflow. If quasi-vacuum drying is required, after the air flow drying cycle, the solenoid valve 2 is closed and the solenoid valve 1 is opened, thereby prompting the exhaust pump to extract the air flow and discharge it through the exhaust pipe, thereby generating a quasi-vacuum effect inside the box, thereby meeting the needs of vacuum drying. The overall structure is convenient for air circulation and drying, increases the drying efficiency, and makes the structure relatively stable.

[0020] 3. The roller support mechanism of this scheme supports and evenly transmits the airflow to the heat-resistant flexible conveyor belt. When the airflow is transported to the inside of the connecting horizontal pipe, the airflow is transported to the inside of the output pipe through positive pressure, and the output pipe is kept stable by the sealed bearing. The airflow passes through the hollow branch pipe and takes out the heat generated by the electric heating wire, and the airflow is discharged through the air outlet, and is evenly guided by the hollow cooperation of the hollow stainless steel mesh roller, thereby prompting the hot airflow to pass through the air holes and evenly contact the display screen on the top of the heat-resistant flexible conveyor belt to assist in uniform drying. It is relatively stable and convenient to provide synchronous support and uniform airflow guidance, thereby increasing uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front three-dimensional appearance structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the three-dimensional appearance structure of the present invention when viewed from the rear and upward.

[0023] Figure 3 This is a schematic diagram of the three-dimensional appearance structure of the L-shaped positioning clip assembly of the present invention.

[0024] Figure 4 It is a front cross-sectional schematic diagram of the internal structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the internal structure of the present invention in a top view and a cross-section.

[0026] Figure 6 It is a schematic diagram of the internal structure of the present invention from the right side.

[0027] Figure 7 It is a schematic diagram of the left side sectional structure of the present invention.

[0028] Figure 8 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0029] Figure 9 For the present invention Figure 4 Enlarged structural diagram at point B in the middle.

[0030] Figure 10 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.

[0031] Figure 11 For the present invention Figure 4 Enlarged structural diagram at point D in the middle.

[0032] Figure 12 For the present invention Figure 6 Enlarged structural diagram at E in the middle.

[0033] Figure 13 For the present invention Figure 12 Enlarged structural diagram at F in the middle.

[0034] In the figure: 1. Box body; 101. Inlet and outlet slots; 2. Transmission mechanism; 201. Synchronous servo motor; 202. Support frame; 203. Transmission support roller; 204. Transmission roller gear sleeve; 3. Heat-resistant flexible conveyor belt; 301. Air vent; 302. Synchronous transmission tooth groove; 303. Embedded nut; 4. Synchronous hydraulic telescopic mechanism; 401. Hydraulic telescopic rod; 402. Hydraulic transmission pipe; 403. Mounting frame; 404. Electric telescopic rod; 405. Oil output cylinder; 406. Sealing piston; 5. Protective box; 501. Fixed ring; 502. Sealing top cover; 503. Sealing partition; 6. Sealing mechanism; 601. Fixed plate; 602. Synchronous electric telescopic rod; 603. Mounting strip; 604. Silicone sealing strip; 605. Middle sealing strip; 606. Middle reinforcement frame; 607. Side reinforcement frame; 7. Control panel; 8. Exhaust mechanism; 80 1. Exhaust pipe; 802. Air pump; 803. Air outlet pipe; 804. Air exhaust pipe; 805. Solenoid valve 2; 806. Solenoid valve 1; 807. Connecting cross pipe; 9. Roller support mechanism; 901. Hollow branch pipe; 902. Air outlet; 903. Hollow stainless steel mesh roller; 904. Synchronous gear sleeve; 905. Output pipe; 906. Sealed bearing; 907. Concave bracket; 908. Electric heating wire; 10. Gas Filter mechanism; 1001, pressure-equalizing tube; 1002, mounting angle plate; 1003, filter cartridge; 1004, air guide cover; 1005, bottom mounting plate; 1006, bellows; 1007, hollow breathable limit top cover; 1008, stainless steel fine mesh; 1009, adsorption filter pad; 1010, bolt hole one; 11, L-shaped positioning clip; 1101, curved surface; 1102, bottom mounting piece; 1103, bolt hole two. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1-13 The present invention provides a technical solution: a drying device for display screen production, comprising a box body 1 and an L-shaped positioning clamp 11, two entry and exit slots 101 are provided at both ends of the box body 1, transmission mechanisms 2 are movably installed at both ends of the box body 1, and a heat-resistant flexible conveyor belt 3 is movably sleeved on the outer side of the transmission mechanism 2, a protection box 5 is fixedly installed on the top of the box body 1, a sealing partition 503 is fixedly installed inside the protection box 5, an exhaust mechanism 8 is provided inside the protection box 5, an air filter mechanism 10 is provided inside the protection box 5, a synchronous hydraulic telescopic mechanism 4 is provided on the top of the box body 1, a plurality of roller support mechanisms 9 are movably installed inside the box body 1, and two sealing mechanisms 6 are fixedly installed on the outer sides of both ends of the box body 1.

[0037] A plurality of ventilation holes 301 are provided inside the heat-resistant flexible conveyor belt 3 , and synchronous transmission tooth grooves 302 are provided on the inner walls on both sides of the heat-resistant flexible conveyor belt 3 . Embedded nuts 303 are fixedly installed inside the ventilation holes 301 .

[0038] The roller support mechanism 9 includes a hollow branch pipe 901, and a plurality of air outlet holes 902 are opened inside the hollow branch pipe 901. The outer sides of both ends of the hollow branch pipe 901 are movably connected to concave brackets 907 through bearings. The concave brackets 907 are symmetrically fixedly installed on the inner wall of the box body 1. The outer side of the hollow branch pipe 901 is fixedly connected to a hollow stainless steel mesh roller 903. The outer sides of both ends of the hollow stainless steel mesh roller 903 are fixedly connected to synchronous gear sleeves 904. The inner sides of both ends of the hollow branch pipe 901 are connected to sealed bearings 906. The inner side of the sealed bearing 906 is connected to an output pipe 905. The opposite end of the output pipe 905 is fixedly installed with an electric heating wire 908.

[0039] The number of L-shaped positioning clips 11 is in a group of four. The inner side of the top of the L-shaped positioning clip 11 is an arc surface. The bottom of the L-shaped positioning clip 11 is fixedly installed with a bottom mounting part 1102. Several bolt holes 1103 are opened inside the bottom mounting part 1102. Both the L-shaped positioning clip 11 and the bottom mounting part 1102 are made of flexible materials.

[0040] The working principle of the above technical solution is: when in use, the user docks the equipment with the production conveyor belt, places the display screen to be operated on the top of the heat-resistant flexible conveyor belt 3, and starts the transmission mechanism 2. The transmission mechanism 2 drives the heat-resistant flexible conveyor belt 3 for transmission, and supports the heat-resistant flexible conveyor belt 3 through the roller support mechanism 9 to maintain a relatively stable position. When the display screen moves to the inside of the box 1, the inside of the box 1 has been preheated before, the electric heating wire 908 starts heating, and the air flow circulates through the exhaust mechanism 8, and then the sealing mechanism 6 extends to prompt the inlet and outlet slots 101 and the top and bottom of the heat-resistant flexible conveyor belt 3 to be sealed, thereby reducing air leakage, and the air filter mechanism 10 adsorbs and filters the air flow inside the box 1 to reduce the reflux of the drying solution, and during operation, the air flow inside the box 1 is pumped and controlled and vacuumed according to needs. The overall preheating is uniform and the structural distribution is perfect, which improves the drying efficiency, and the air flow circulation and reduction are realized inside the drying box, which reduces the heat overflow, and can adapt to the drying operations of various materials and display screens of different sizes within a certain range, indirectly improving the working efficiency.

[0041] In another embodiment, Figures 1-8 As shown, the transmission mechanism 2 includes two transmission rollers 203, and the outer sides of both ends of the two transmission rollers 203 are movably connected to the support frame 202 through bearings, and the support frame 202 is fixedly installed on the outer sides of the two ends of the box body 1. One end of the two transmission rollers 203 is transmission-connected to the synchronous servo motor 201, and the synchronous servo motor 201 is fixedly installed on the outer side of the support frame 202. The outer sides of both ends of the two transmission rollers 203 are fixedly connected with the transmission roller gear sleeve 204, and the specifications and dimensions of the transmission roller gear sleeve 204 are adapted to the specifications and dimensions of the synchronous transmission tooth groove 302. The heat-resistant flexible conveyor belt 3 is movably connected to the outer side of the transmission roller 203, and the heat-resistant flexible conveyor belt 3 is transmission-connected to the transmission roller 203 through the synchronous transmission tooth groove 302 and the transmission roller gear sleeve 204, and the diameter of the transmission roller 203 is greater than 50 mm.

[0042] When the transmission mechanism 2 is transmitting, the synchronous servo motor 201 starts to drive the transmission support roller 203 to rotate, and the transmission support roller 203 drives the heat-resistant flexible conveyor belt 3 to transmit through the engagement of the transmission roller gear sleeve 204 and the synchronous transmission tooth groove 302. The groove engagement between the transmission roller gear sleeve 204 and the transmission support roller 203 and the synchronous transmission tooth groove 302 and the heat-resistant flexible conveyor belt 3 can not only play the role of transmission support, but also play the role of positioning and limiting, thereby keeping the moving position of the heat-resistant flexible conveyor belt 3 stable and cooperating with the heat-resistant flexible conveyor belt 3 to perform moving operations. The diameter of the transmission support roller 203 determines the bending radius of the heat-resistant flexible conveyor belt 3, which is convenient for cooperating with flexible materials for transmission operations and reducing damage. For example, when a stainless steel hollow conveyor belt is padded with a buffer pad on the outside, it will not affect the transmission, and it is convenient for transmission.

[0043] In another embodiment, Figures 1-12 As shown, the synchronous hydraulic telescopic mechanism 4 includes four hydraulic telescopic rods 401, which are fixedly sleeved through the box body 1 and extend to the interior of the box body 1. The input ends of the four hydraulic telescopic rods 401 are connected to hydraulic transmission pipes 402, and the opposite ends of the hydraulic transmission pipes 402 are connected to oil output cylinders 405. The hydraulic transmission pipes 402 are symmetrically and evenly distributed on the outside of the protection box 5. The inner side of the oil output cylinder 405 is movably sleeved with a sealing piston 406. The top of the sealing piston 406 is fixedly installed with an electric telescopic rod 404, and the top of the electric telescopic rod 404 is fixedly installed with a mounting bracket 403. The mounting bracket 403 and the oil output cylinder 405 are both fixedly installed on the top cover of the protection box 5 by bolts. The output end of the electric telescopic rod 404 movably penetrates the oil output cylinder 405 and extends to the interior of the oil output cylinder 405, and the telescopic end of the hydraulic telescopic rod 401 is located at the top of the inner cavity of the box body 1.

[0044] When the air inlet part of the air filter mechanism 10 located at the top of the inner cavity of the box body 1 needs to be adjusted in height, the oil output cylinder 405, the hydraulic transmission pipe 402 and the hydraulic telescopic rod 401 are filled with hydraulic oil. At this time, the electronically controlled telescopic rod 404 extends and drives the sealing piston 406 to move inside the oil output cylinder 405, thereby pushing the hydraulic oil inside the oil output cylinder 405 and transmitting it to the inside of the hydraulic telescopic rod 401 through the hydraulic transmission pipe 402, thereby causing the hydraulic telescopic rod 401 to extend, making it easier to adjust the air inlet end position of the air filter mechanism 10. This setting facilitates the synchronization of the extension and retraction of the hydraulic telescopic rod 401. The hydraulic transmission pipe 402 is of the same length at the position of the oil output cylinder 405, thereby promoting equal pressure everywhere, facilitating the synchronous extension of the hydraulic telescopic rod 401, and maintaining the stable position adjustment of the air inlet end of the air filter mechanism 10. This facilitates the use of the structure, and the adjustability increases the convection efficiency of the air flow pumping.

[0045] In another embodiment, Figures 1-10 As shown, a fixing ring 501 is fixedly sleeved on the outer side of the protection box 5, and a sealing top cover 502 is movably installed on the top of the protection box 5. The sealing top cover 502 is fixed to the top of the protection box 5 by bolts passing through the fixing ring 501.

[0046] The fixing ring 501 and the sealing top cover 502 are fixed by bolts and seal the top of the protection box 5, and the oil output cylinder 405 and the mounting bracket 403 are fixedly installed on the top of the sealing top cover 502, and the hydraulic transmission pipe 402 is a flexible hydraulic oil delivery pipe, which is convenient for repairing and maintaining the internal structure of the protection box 5 when the sealing top cover 502 and the fixing ring 501 are separated, thereby facilitating the maintenance of the internal structure and indirectly increasing the convenience of use. At the same time, the sealing partition 503 separates the inside of the protection box 5 and is sealed with the sealing top cover 502, thereby dividing the protection box 5 into two areas, facilitating the installation of the exhaust mechanism 8 and the air filter mechanism 10 respectively, and facilitating the separation of the air circulation components, thereby indirectly increasing the service life of the exhaust pump 802.

[0047] In another embodiment, Figures 1-13 As shown, the two sealing mechanisms 6 each include two fixed plates 601, two synchronous electric telescopic rods 602 are fixedly installed on the opposite sides of the two fixed plates 601, the output ends of the two synchronous electric telescopic rods 602 are fixedly installed with mounting strips 603, the opposite sides of the mounting strips 603 are fixedly installed with silicone sealing strips 604, the inside of the silicone sealing strips 604 is fixedly installed with side reinforcement frames 607, the mounting strips 603 and the silicone sealing strips 604 are both in active contact with the outer side walls of the box body 1, the outer sides of both ends of the box body 1 are fixedly installed with middle reinforcement frames 606, the outer sides of the middle reinforcement frames 606 are fixedly installed with middle sealing strips 605, the positions of the middle sealing strips 605 and the silicone sealing strips 604 correspond to the positions of the inlet and outlet slots 101, and the silicone sealing strips 604 and the middle sealing strips 605 are located at the top and bottom of the heat-resistant flexible conveyor belt 3.

[0048] When the sealing mechanism 6 seals the inlet and outlet slots 101, the synchronous electric telescopic rod 602 extends synchronously to drive the installation strip 603 to move, and prompts the silicone sealing strip 604 to move relatively. The silicone sealing strip 604 moves to the top and bottom positions of the heat-resistant flexible conveyor belt 3 and continues to squeeze. Since the inner side of the heat-resistant flexible conveyor belt 3 contacts the middle sealing strip 605, it continues to extend, thereby prompting the silicone sealing strip 604 and the heat-resistant flexible conveyor belt 3 and the middle sealing strip 605 to be squeezed and sealed, thereby blocking the inlet and outlet of the inlet and outlet slots 101, reducing the overflow of air flow, and combining the structural support of the middle reinforcement frame 606 and the side reinforcement frame 607 to prompt the outer side to produce deformation sealing while reducing deformation, and provide stable support for the inlet and outlet of the inlet and outlet slots 101, and reduce the deformation caused by air pressure, so as to facilitate auxiliary operations and sealing.

[0049] In another embodiment, Figures 1-13As shown, the air holes 301 are evenly distributed in a rectangular array inside the heat-resistant flexible conveyor belt 3, the specifications and dimensions of the bolt hole 1103 are compatible with the specifications and dimensions of the air holes 301 and the embedded nuts 303, and the heat-resistant flexible conveyor belt 3 adopts one of Teflon PTFE conveyor belt, silicone conveyor belt and glass fiber coated conveyor belt.

[0050] The function of the air hole 301 is to provide ventilation and provide a bolt installation hole position for the bolt hole 2 1103, realizing a one-hole dual-purpose structure. The material used for the heat-resistant flexible conveyor belt 3 takes into account both heat resistance and flexibility, and is convenient for cooperating with the roller support mechanism 9 to provide stable support for the display screen. First, the Teflon PTFE conveyor belt has a temperature resistance range of -73℃-260℃ and can work at 260℃ for a long time. It has non-stickiness: the surface is smooth and not easy to adhere to dust, oil or chemicals that may be produced during the drying process. It is suitable for display production environments with high cleanliness requirements. Corrosion resistance: resistant to strong acids, strong alkalis and most chemical solvents, suitable for scenes that may come into contact with corrosive gases or liquids during the drying process. Second, silicone conveyor belts, temperature resistance range: -60℃-200℃, some improved types can withstand short-term high temperatures of 250℃, with softness and elasticity: the surface is soft, and the friction on conveyed objects such as flexible screens and films is small, not easy to cause scratches or damage, anti-stickiness: slightly sticky, can absorb light and small objects such as small pieces of glass, but requires regular cleaning to prevent accumulation of pollutants, insulation: good insulation performance, suitable for the drying environment of electrostatically sensitive electronic components, convenient for the application of drying lines for flexible display screens.

[0051] In another embodiment, Figure 4-12 As shown, the air extraction mechanism 8 includes an air extraction pump 802, the output end of the air extraction pump 802 is connected to two air outlet pipes 803, the diversion parts of the two air outlet pipes 803 are connected to the exhaust pipe 801, and the diversion parts of the two air outlet pipes 803 are movably installed with electromagnetic valves 805. The exhaust pipe 801 is fixedly passed through the protection box 5 and extends to the outside of the protection box 5. The interior of the exhaust pipe 801 is provided with an electromagnetic valve 806. The air extraction pump 802 is fixedly installed at the bottom of the inner cavity of the protection box 5 The input end of the vacuum pump 802 is connected to an exhaust pipe 804, which is fixedly passed through the sealed partition 503 and extends to one side of the sealed partition 503. The two exhaust pipes 803 are fixedly passed through the sealed partition 503 and the protective box 5 and extend to the interior of the box body 1. The ends of the two exhaust pipes 803 away from the vacuum pump 802 are connected to a connecting transverse pipe 807. Both ends of the connecting transverse pipe 807 are sealed, and the connecting transverse pipe 807 is fixedly installed on the inner wall of the box body 1.

[0052] When the vacuum mechanism 8 circulates the air flow inside the box body 1, the vacuum pump 802 is started and the air flow in the area of the air filter mechanism 10 on one side of the sealing partition 503 is exhausted. The space of the air filter mechanism 10 is at a negative pressure. The air flow is extracted from the inside of the box body 1 through the air filter mechanism 10, and after filtering, it is output to the inside of the air outlet pipe 803 through the vacuum pump 802, and is guided to the inside of the connecting cross pipe 807 through the air outlet pipe 803, thereby outputting the air flow to the roller support mechanism 9 through the connecting cross pipe 807, thereby realizing the air flow circulation between the box body 1 and the protective box 5 to reduce heat overflow. If vacuum drying is required, after the air flow drying cycle, close the solenoid valve 2 805 and open the solenoid valve Door 806, thereby prompting the vacuum pump 802 to extract the air flow and discharge it through the exhaust pipe 801, thereby generating a vacuum-like effect inside the box 1, thereby meeting the needs of vacuum drying. If the vacuum pump 802 adopts an air pump device that can output air flow in both directions, it can be reversed and circulated inside the box 1 and the box 1 and the protective box 5, thereby prompting the structure to reverse the air flow when needed. The vacuum pump 802 is a structure in which the air flow bin and the motor are separated. If a high drying temperature condition occurs, in order to cope with this extreme condition, a sealing structure is used to separate the motor part of the vacuum pump 802 from the hot air flow space. The overall structure facilitates air circulation and drying, increases the drying efficiency, and makes the structure relatively stable.

[0053] In another embodiment, Figure 4-13 As shown, the roller support mechanism 9 is linearly and evenly distributed inside the box body 1, one end of the output pipe 905 is fixedly installed with the connecting transverse pipe 807, and the output pipe 905 is connected to the inside of the connecting transverse pipe 807, the synchronous gear sleeve 904 and the hollow stainless steel mesh roller 903 are movably connected to the inner side of the synchronous transmission tooth groove 302 and the heat-resistant flexible conveyor belt 3, the output pipe 905 is linearly connected on the opposite side of the connecting transverse pipe 807, and the air outlet holes 902 are circumferentially and linearly evenly distributed inside the hollow branch pipe 901.

[0054] The roller support mechanism 9 supports and evenly transmits the airflow to the heat-resistant flexible conveyor belt 3. When the airflow is transported to the inside of the connecting horizontal pipe 807, the airflow is transported to the inside of the output pipe 905 by positive pressure, and the output pipe 905 is kept stable by the sealed bearing 906. The airflow passes through the hollow branch pipe 901 and takes out the heat generated by the electric heating wire 908, and the airflow is discharged through the air outlet 902, and is evenly guided by the hollow cooperation of the hollow stainless steel mesh roller 903, thereby promoting the hot air flow to pass through the air vent 301 and make uniform contact with the display screen on the top of the heat-resistant flexible conveyor belt 3, thereby assisting uniform drying. The meshing connection between the synchronous gear sleeve 904 and the hollow stainless steel mesh roller 903 and the heat-resistant flexible conveyor belt 3 and the synchronous transmission tooth groove 302 maintains a relatively stable synchronous support effect, and the hollow branch pipe 901 is relatively stable under the support of the concave bracket 907 through the bearing, which makes the structure relatively stable and facilitates the provision of synchronous support and uniform airflow guidance, thereby increasing uniformity.

[0055] In another embodiment, Figure 4-12 As shown, the air filter mechanism 10 includes a mounting angle plate 1002, which is fixedly mounted on the inner wall of the protective box 5, and a plurality of filter cartridges 1003 are fixedly sleeved on the inner side of the mounting angle plate 1002. A stainless steel fine mesh frame 1008 is movably sleeved on the bottom of the inner cavity of the filter cartridge 1003, and an adsorption filter pad 1009 is movably placed on the top of the stainless steel fine mesh frame 1008. A hollow breathable limit top cover 1007 is threadedly connected to the top of the filter cartridge 1003. The bottom end of the mounting angle plate 1002 is connected to a pressure equalizing pipe 1001, and the mounting angle plates 1002 are linearly and evenly distributed on the top of the pressure equalizing pipe 1001. The bottom of one end of the pressure equalizing pipe 1001 is connected to a plurality of bellows 1006. The bellows 1006 is fixed through the protective box 5 and extends to the top of the inner cavity of the box body 1. The bottom end of the bellows 1006 is connected to the air guide cover 1004. The bottom of the air guide cover 1004 is fixedly installed with a bottom mounting plate 1005. The four corners of the bottom mounting plate 1005 are fixed to the output end of the hydraulic telescopic rod 401. A number of bolt holes 1010 are opened inside the bottom mounting plate 1005. The bolt holes 1010 are evenly distributed in a rectangular array inside the bottom mounting plate 1005. The two air outlet pipes 803 are both movable through the interior of the bottom mounting plate 1005. The adsorption and filtration pad layer 1009 includes a honeycomb activated carbon pad, a zeolite molecular sieve pad and an activated carbon fiber pad from bottom to top.

[0056] When the air filter mechanism 10 filters the air flow inside the box 1, the air flow enters the opposite side of the air guide cover 1004 and the bottom mounting plate 1005 through the bolt hole 1010 due to the negative pressure, and enters the inner wall of the equalizing tube 1001 through the guide of the bellows 1006. The large-size equalizing pressure connection guide of the equalizing tube 1001 prompts the air flow to pass through the interior of several filter cartridges 1003, first through the stainless steel fine mesh frame 1008 for preliminary filtration, and then passes through the honeycomb activated carbon pad, zeolite molecular sieve pad and activated carbon fiber pad in turn to remove the dry air in the air flow. The gas is adsorbed and filtered, and the design of multiple bellows 1006 and mounting angle plate 1002 reduces the filter pressure resistance and the frequency of maintenance and replacement, which is convenient for auxiliary operations. The bolt hole 1010 is designed to provide installation holes for other equipment when air flows through, such as infrared drying IR drying and ultraviolet UV curing related equipment, as well as top heating equipment, which is convenient for expanding the heating structure according to needs and increasing the use effect of the structure. One of the activated carbon granular / honeycomb principle: using a porous structure with a specific surface area of >1000m 2 / g physical adsorption to capture organic molecules, suitable for low and medium concentration VOCs <1000mg / m 3 , such as flexible screen PI substrate drying waste gas, ink drying waste gas, the second molecular sieve zeolite, principle: through the screening effect of crystal micropores and polar adsorption selective capture molecules such as 13X type molecular sieve pore size of about Applicable scenarios: High-temperature exhaust gas > 80°C or high-humidity environments with relative humidity > 80%, such as high-temperature glass substrate drying lines. Its triple activated carbon fiber (ACF) works by directly exposing the micropores of fibrous activated carbon to the surface, resulting in an adsorption rate 10-100 times faster than granular activated carbon. It is suitable for low-concentration, high-volume exhaust gas, such as in continuous drying lines for flexible screens, or for scenarios requiring rapid response. The stainless steel mesh of the fine-grained stainless steel grid 1008, with a pore size of 0.1mm, removes large particles of adhesive mist. The interchangeable structure of the adsorption filter pad 1009 allows for different adsorption materials to be configured according to the display drying process, facilitating modification and customization, enhancing the drying effect for different screens and increasing overall stability.

[0057] In another embodiment, Figure 1-Figure 3 As shown, the top of the L-shaped positioning clip 11 is provided with an arc surface 1101, and the four L-shaped positioning clips 11 are evenly distributed in a rectangular shape. A control panel 7 is installed on the front of the box 1, and a temperature and humidity sensor is provided at the bottom of the inner cavity of the box 1.

[0058] The L-shaped positioning clip 11 is screwed through the bolt hole 2 1103 to the inside of the air vent 301 and the embedded nut 303, and the four L-shaped positioning clips 11 are installed on the top of the heat-resistant flexible conveyor belt 3 in a predetermined size, which is convenient for limiting the size of the display screen that needs to be fixed and positioned, thereby playing a positioning role and increasing the use effect of the structure, making it convenient to deal with the drying operation of display screens of different sizes within a certain range, and increasing the use effect. The control panel 7 is an existing structure, which is convenient for programming to increase the effect of automatic control, and is convenient for cooperating with the drying operation.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for display screen production, comprising a housing (1) and an L-shaped positioning clamp (11), characterized in that: Two inlet and outlet slots (101) are provided at both ends of the box (1), a transmission mechanism (2) is movably installed at both ends of the box (1), a heat-resistant flexible conveyor belt (3) is movably sleeved on the outer side of the transmission mechanism (2), a protection box (5) is fixedly installed on the top of the box (1), a sealing partition (503) is fixedly installed inside the protection box (5), an air extraction mechanism (8) is provided inside the protection box (5), an air filter mechanism (10) is provided inside the protection box (5), a synchronous hydraulic telescopic mechanism (4) is provided on the top of the box (1), a plurality of roller support mechanisms (9) are movably installed inside the box (1), and two sealing mechanisms (6) are fixedly installed on the outer sides of both ends of the box (1); The heat-resistant flexible conveyor belt (3) is provided with a plurality of ventilation holes (301) inside, the inner walls on both sides of the heat-resistant flexible conveyor belt (3) are provided with synchronous transmission tooth grooves (302), and embedded nuts (303) are fixedly installed inside the ventilation holes (301); The roller support mechanism (9) comprises a hollow branch pipe (901), a plurality of air outlet holes (902) are provided inside the hollow branch pipe (901), the outer sides of both ends of the hollow branch pipe (901) are movably sleeved with concave brackets (907) through bearings, the concave brackets (907) are symmetrically fixedly installed on the inner wall of the box body (1), the outer side of the hollow branch pipe (901) is fixedly sleeved with a hollow stainless steel mesh roller (903), the outer sides of both ends of the hollow stainless steel mesh roller (903) are fixedly sleeved with a synchronous gear sleeve (904), the inner sides of both ends of the hollow branch pipe (901) are sleeved with sealed bearings (906), the inner sides of the sealed bearings (906) are sleeved with an output pipe (905), and the opposite ends of the output pipe (905) are fixedly installed with an electric heating wire (908); The number of the L-shaped positioning clips (11) is four in a group. The inner side of the top of the L-shaped positioning clip (11) is an arc surface. The bottom of the L-shaped positioning clip (11) is fixedly installed with a bottom mounting piece (1102). The inside of the bottom mounting piece (1102) is provided with a plurality of bolt holes (1103). The L-shaped positioning clip (11) and the bottom mounting piece (1102) are both made of flexible materials.

2. A drying device for display screen production according to claim 1, characterized in that: The transmission mechanism (2) comprises two transmission rollers (203), the outer sides of both ends of the two transmission rollers (203) are movably connected to support frames (202) through bearings, the support frames (202) are fixedly mounted on the outer sides of both ends of the box (1), one end of the two transmission rollers (203) is transmission-connected to a synchronous servo motor (201), the synchronous servo motor (201) is fixedly mounted on the outer sides of the support frames (202), and the two transmission rollers (203) are ) are fixedly sleeved on the outer sides of both ends thereof with transmission roller gear sleeves (204), the specifications and dimensions of the transmission roller gear sleeves (204) are adapted to the specifications and dimensions of the synchronous transmission tooth grooves (302), the heat-resistant flexible conveyor belt (3) is movably sleeved on the outer sides of the transmission support roller (203), the heat-resistant flexible conveyor belt (3) is transmission-sleeved with the transmission support roller (203) through the synchronous transmission tooth grooves (302) and the transmission roller gear sleeves (204), and the diameter of the transmission support roller (203) is greater than 50 mm.

3. The drying equipment for display screen production according to claim 1, characterized in that: The synchronous hydraulic telescopic mechanism (4) comprises four hydraulic telescopic rods (401), each of the four hydraulic telescopic rods (401) being fixedly sleeved and penetrating the box (1) and extending into the interior of the box (1), the input ends of the four hydraulic telescopic rods (401) being connected to a hydraulic transmission pipe (402), the opposite ends of the hydraulic transmission pipe (402) being connected to an oil output cylinder (405), the hydraulic transmission pipes (402) being symmetrically and evenly distributed on the outside of the protection box (5), and the inner side of the oil output cylinder (405) being movably sleeved with a sealing piston (406), an electric telescopic rod (404) is fixedly mounted on the top of the sealing piston (406), a mounting frame (403) is fixedly mounted on the top of the electric telescopic rod (404), the mounting frame (403) and the oil output cylinder (405) are both fixedly mounted on the top cover of the protection box (5) by bolts, the output end of the electric telescopic rod (404) movably passes through the oil output cylinder (405) and extends to the interior of the oil output cylinder (405), and the telescopic end of the hydraulic telescopic rod (401) is located at the top of the inner cavity of the box body (1).

4. The drying equipment for display screen production according to claim 1, characterized in that: A fixing ring (501) is fixedly sleeved on the outer side of the protection box (5), and a sealing top cover (502) is movably mounted on the top of the protection box (5). The sealing top cover (502) is fixed to the top of the protection box (5) by means of bolts passing through the fixing ring (501).

5. The drying equipment for display screen production according to claim 1, characterized in that: The two sealing mechanisms (6) each comprise two fixing plates (601), two synchronous electric telescopic rods (602) are fixedly mounted on opposite sides of the two fixing plates (601), mounting strips (603) are fixedly mounted on the output ends of the two synchronous electric telescopic rods (602), silicone sealing strips (604) are fixedly mounted on opposite sides of the mounting strips (603), a side reinforcement frame (607) is fixedly mounted inside the silicone sealing strips (604), the mounting strips (603) and the silicone The rubber sealing strips (604) are in active contact with the outer side walls of the box body (1), and the outer sides of both ends of the box body (1) are fixedly installed with middle reinforcement frames (606), and the outer sides of the middle reinforcement frames (606) are fixedly installed with middle sealing strips (605), and the positions of the middle sealing strips (605) and the silicone sealing strips (604) correspond to the positions of the inlet and outlet slots (101), and the silicone sealing strips (604) and the middle sealing strips (605) are located at the top and bottom of the heat-resistant flexible conveyor belt (3).

6. The drying equipment for display screen production according to claim 1, characterized in that: The ventilation holes (301) are evenly distributed in a rectangular array inside the heat-resistant flexible conveyor belt (3); the specifications and dimensions of the second bolt hole (1103) are compatible with the specifications and dimensions of the ventilation holes (301) and the embedded nuts (303); and the heat-resistant flexible conveyor belt (3) is a Teflon (PTFE) conveyor belt, a silicone conveyor belt, and a glass fiber coated conveyor belt.

7. The drying equipment for display screen production according to claim 3, characterized in that: The air extraction mechanism (8) includes an air extraction pump (802), the output end of the air extraction pump (802) is connected to two air outlet pipes (803), the diversion parts of the two air outlet pipes (803) are connected to the exhaust pipe (801), the diversion parts of the two air outlet pipes (803) are movably installed with electromagnetic valve 2 (805), the exhaust pipe (801) is fixedly passed through the protection box (5) and extends to the outside of the protection box (5), the interior of the exhaust pipe (801) is provided with electromagnetic valve 1 (806), the air extraction pump (802) is fixedly installed at the bottom of the inner cavity of the protection box (5), and the exhaust pipe (801) is provided with an electromagnetic valve 1 (806). The input end of the air extraction pump (802) is connected to an air extraction pipe (804), the air extraction pipe (804) is fixedly passed through the sealing partition (503) and extends to one side of the sealing partition (503), the two air outlet pipes (803) are fixedly passed through the sealing partition (503) and the protection box (5) and extend to the interior of the box body (1), and the ends of the two air outlet pipes (803) away from the air extraction pump (802) are connected to a connecting transverse pipe (807), both ends of the connecting transverse pipe (807) are blocked, and the connecting transverse pipe (807) is fixedly installed on the inner wall of the box body (1).

8. The drying equipment for display screen production according to claim 7, characterized in that: The roller support mechanism (9) is linearly and evenly distributed inside the box (1); one end of the output pipe (905) is fixedly mounted on the connecting transverse pipe (807), and the output pipe (905) is connected to the inside of the connecting transverse pipe (807); the synchronous gear sleeve (904) and the hollow stainless steel mesh roller (903) are movably sleeved on the inner side of the synchronous transmission tooth groove (302) and the heat-resistant flexible conveyor belt (3); the output pipe (905) is linearly connected on the opposite side of the connecting transverse pipe (807); and the air outlet holes (902) are circumferentially and linearly evenly distributed inside the hollow branch pipe (901).

9. The drying equipment for display screen production according to claim 7, characterized in that: The air filter mechanism (10) comprises a mounting angle plate (1002), the mounting angle plate (1002) being fixedly mounted on the inner wall of the protection box (5), a plurality of filter cartridges (1003) being fixedly sleeved on the inner side of the mounting angle plate (1002), a stainless steel fine mesh frame (1008) being movably sleeved on the bottom of the inner cavity of the filter cartridge (1003), an adsorption filter pad (1009) being movably placed on the top of the stainless steel fine mesh frame (1008), a hollow breathable limit top cover (1007) being threadedly connected to the top of the filter cartridge (1003), a pressure equalizing pipe (1001) being connected to the bottom end of the mounting angle plate (1002), the mounting angle plates (1002) being linearly and evenly distributed on the top of the pressure equalizing pipe (1001), and a plurality of bellows (1006) being connected to the bottom end of one end of the pressure equalizing pipe (1001). ), the bellows (1006) is fixedly passed through the protection box (5) and extends to the top of the inner cavity of the box body (1), the bottom end of the bellows (1006) is connected to the air guide cover (1004), the bottom of the air guide cover (1004) is fixedly installed with a bottom mounting plate (1005), the four corners of the bottom mounting plate (1005) are fixed to the output end of the hydraulic telescopic rod (401), a plurality of bolt holes (1010) are opened inside the bottom mounting plate (1005), the bolt holes (1010) are uniformly distributed in a rectangular array inside the bottom mounting plate (1005), the two air outlet pipes (803) are both movable and passed through the inside of the bottom mounting plate (1005), and the adsorption filter pad layer (1009) includes a honeycomb activated carbon pad layer, a zeolite molecular sieve pad layer and an activated carbon fiber pad layer from bottom to top.

10. The drying equipment for display screen production according to claim 9, characterized in that: The top end of the L-shaped positioning clip (11) is provided with an arc surface (1101), and the four L-shaped positioning clips (11) are evenly distributed in a rectangular shape. A control panel (7) is installed on the front of the box (1), and a temperature and humidity sensor is provided at the bottom of the inner cavity of the box (1).

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