Drying device for screen printing plate processing

Abstract

The invention relates to the technical field of product drying, and particularly discloses a drying device for screen printing plate processing. An air supply device is installed on a drying oven, multiple layers of air channels distributed at intervals up and down are arranged in the drying oven, the air channels communicate with the air supply device, and a first sealing door installed on the drying oven is arranged at the communicating position of the air channels and the air supply device; the first sealing door is used for controlling connection and disconnection between the air duct and the air supply device; every two adjacent layers of air ducts are communicated through middle air ports, the multiple middle air ports are distributed in an S shape from top to bottom, middle sealing doors and humidity detectors which are installed on the drying oven are arranged at the middle air ports, the middle sealing doors are used for controlling opening and closing of the middle air ports, and the humidity detectors are used for detecting the air humidity at the middle air ports; a bracket used for bearing the screen printing plate is arranged in the air channel and is in a hollowed-out shape or a fence shape. According to the drying device for screen printing plate processing, the screen printing plate can be properly dried through independence of the air flue and diversion of hot air, and the drying effect of the screen printing plate is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of product drying, and in particular to a drying device for screen processing. Background Art

[0002] In the process of making printing screens, the main purpose of drying is to dry and solidify the photosensitive adhesive or other coating materials to ensure that the screen can maintain stable printing effects and print durability in the subsequent printing process.

[0003] The Chinese patent document with the authorization announcement number CN214792227U discloses a drying device dedicated to plate making, including a drying box, and air inlets and air outlets are respectively provided on the opposite side walls of the drying box, the air inlet is located below the air outlet, and a blower is installed in the air inlet; the interior of the drying box is provided with several layers of drying racks for placing screens. When the screen needs to be dried, the screen is placed on each layer of drying rack in turn, and then the blower is started to send external air into the drying box. The air is heated by the heating tube, and the screen is heated and dried from bottom to top, and finally discharged from the drying box through the air outlet. When the hot air flows, the arrangement of each layer of screens can properly guide the air, so that part of the air flows in an S shape along the surface of the screen, prolonging the air flow and improving the utilization rate of the air.

[0004] However, when hot air flows in an S-shape, its own heat will be gradually released, so when the hot air passes through the bottom screen, its temperature may be the highest, and when the hot air passes through the top screen, its temperature may be the lowest; similarly, when the hot air flows through each layer of the screen, it will take away the moisture in the screen. At the bottom screen, the relative humidity of the hot air is low, while at the top screen, due to the accumulation of moisture, the relative humidity of the hot air may be the highest. In this way, when the hot air dries layer by layer, the bottom screen may be dried first, and the top screen may be dried last. In the continuous supply of hot air, some screens may be over-dried, while others may not be dried sufficiently.

[0005] Therefore, the art needs a drying device for screen processing to solve the above problems. Summary of the invention

[0006] The present invention provides a drying device for screen processing, aiming to solve the problem of over-drying or insufficient drying of the screen in the related art.

[0007] The drying device for screen processing of the present invention comprises a drying oven, on which an air supply device for conveying hot air into the interior is installed, and is characterized in that the oven has multiple layers of air ducts spaced apart from each other, each layer of the air ducts is connected to the air supply device, and a first sealing door installed on the oven is provided at the connection point between the two, and the first sealing door is used to control the connection and disconnection between the air duct and the air supply device; two adjacent layers of air ducts are connected through an intermediate air outlet opened on the oven, and a plurality of intermediate air outlets are distributed in an S shape from top to bottom, and an intermediate sealing door and a humidity detector installed on the oven are provided at the intermediate air outlet, and the intermediate sealing door is used to control the opening and closing of the intermediate air outlet, and the humidity detector is used to detect the air humidity at the intermediate air outlet; a bracket for supporting the screen is provided in each layer of the air duct, and at least a part of the bracket is hollow or fence-shaped.

[0008] The effect is that when the hot air flows in the oven, under the guidance of the air duct and the middle air outlet, its flow path is S-shaped, thereby extending the process of the hot air in the oven and improving the utilization rate of the hot air. During the flow, the hot air takes away the moisture in the screen to achieve the drying of the screen. Since the top screen is first affected by the hot air, it will be dried first. At this time, at the middle air outlet between the top air duct and the second air duct, the humidity detector will detect that the humidity in the hot air is close to 0, thereby determining that there is no moisture in the top screen and completing the drying purpose. At this time, the humidity detector can control the first sealing door corresponding to the top air duct to close, and the middle sealing door between the top air duct and the second air duct to close, thereby the first sealing door realizes the isolation between the top air duct and the air inlet cavity, the middle sealing door realizes the isolation between the top air duct and the second air duct, and the top air duct is completely independent from the hot air flow system, avoiding the hot air from continuing to dry the top screen, and ensuring the drying effect of the top screen.

[0009] At the same time, the humidity detector can also control the first sealing door corresponding to the second layer of air duct to open, and the hot air continues to flow downward from the second layer of air duct. Similarly, the second layer of screen and subsequent screens will be dried step by step and separated one by one, avoiding deformation of the screen in the screen due to over-drying, thus protecting the screen. Therefore, the device protects each layer of screen by closing it during drying, avoiding insufficient drying of the screen and over-drying of the screen, thus ensuring the drying effect of each layer of screen.

[0010] Preferably, one end of the air duct away from the air supply device is connected to the outside world, and the oven is equipped with a temperature-controlled sealed door located at the end of the air duct away from the air supply device, and the temperature-controlled sealed door is used to control the connection and disconnection between the air duct and the outside world.

[0011] The effect is that when the air duct is separated, the temperature-controlled sealed door can be turned from a closed state to an open state, thereby realizing conduction between the air duct and the outside world. The normal temperature air outside can gradually penetrate the hot air in the air duct, thereby realizing a gradual cooling in the air duct and a slow cooling of the screen. This avoids the phenomenon of rapid cooling caused by a sudden drop in temperature when the screen encounters the outside air when it is removed after the drying work is completed. Slow cooling ensures the structural stability of the screen.

[0012] Preferably, two air guide plates are disposed in the air duct and are arranged opposite to the upper and lower sides of the bracket, and the air guide plates are inclined toward the bracket so as to guide the hot air to the bracket.

[0013] The effect is that when the hot air flows in the left and right directions in the air duct, it will become an inclined flow and flow toward the bracket under the guidance of the air guide plate, thereby producing a proper impact on the screen on the bracket, thereby improving the drying efficiency of the screen.

[0014] Preferably, the two air guide plates constitute a plate group, and the plate group is provided in plurality along the extension direction of the air duct.

[0015] The effect is that the arrangement of multiple plate groups increases the action range of the air guide plates, so that the hot air has a wider impact range on the screen, thereby accelerating the drying of the screen.

[0016] Preferably, the air guide plate is rotatably mounted on the oven, and a driving device for controlling the deflection of the air guide plate is provided on the oven. When the air guide plate is deflected, the flow direction of the hot air relative to the bracket can be controlled.

[0017] The effect is that the air guide plate can adjust the flow direction of the hot air when deflected, so that the impact angle of the hot air on the screen changes within an appropriate range, so that the impact of the hot air on the screen is more uniform and comprehensive, which not only avoids damage to the screen caused by long-term fixed-point impact, but also improves the drying efficiency of the screen.

[0018] Preferably, the driving device includes a tooth plate, a transmission gear and a power piece, the tooth plate is slidably assembled on the oven along the extension direction of the air duct, a plurality of the transmission gears are respectively fixed on the deflection shafts of a plurality of the air guide plates, and the transmission gears are meshed with the tooth plate; the power piece is installed on the oven and is used to drive the tooth plate to slide.

[0019] Preferably, the power component includes a main shaft and a power motor. The main shaft is rotatably mounted on the oven and is connected to the toothed plate through a gear rack mechanism so as to drive the toothed plate to slide when rotating. The power motor is mounted on the oven and is used to drive the main shaft to rotate.

[0020] The effect is that when the power motor drives the main shaft to rotate, the main shaft drives the toothed plate to slide through the gear rack mechanism, the toothed plate drives the transmission gear to rotate, and the transmission gear drives the air guide plate to deflect through the deflection shaft, thereby realizing the adjustment of the hot air flow direction by the air guide plate.

[0021] Preferably, the bracket includes a frame and rolling elements, the frame is installed in the air duct; a plurality of rolling elements are placed inside the frame and are spaced apart along the extension direction of the air duct, and the rolling elements are rotatably connected to the frame; a belt transmission mechanism or a chain transmission mechanism is connected between the rolling elements and the main shaft, so that when the main shaft rotates, the rolling elements can be driven to rotate.

[0022] The effect is that when the main shaft rotates, the rolling element can be driven to rotate through a belt transmission mechanism or a chain transmission mechanism. When the rolling element rotates, it can drive the screen placed thereon to slide slightly, thereby changing the contact point between the screen and the rolling element, exposing the parts of the screen that are hidden due to the contact, making it easier to be dried, thereby speeding up the drying of the screen.

[0023] Preferably, the belt transmission mechanism includes a toothed belt, a sub-gear and a main gear, the toothed belt is embedded in the frame; the multiple sub-gears are respectively fixed on the multiple rolling elements, the sub-gears are located in the toothed belt and meshed with the toothed belt, and the sub-gears on both sides tighten the two ends of the toothed belt; the main gear is fixed on the main shaft and meshed with the toothed belt.

[0024] The effect is that when the main shaft rotates, it drives the main gear to rotate, the main gear drives the toothed belt to do circular motion, and the toothed belt drives each sub-gear to rotate, thereby realizing the synchronous rotation of multiple rolling elements to make the screen slide.

[0025] Preferably, the frame is slidably mounted on the oven and is capable of drawing out the air duct, and a handle for a person to hold is provided on the frame.

[0026] The effect is that the handle can be manipulated by hand to pull out, thereby achieving the purpose of pulling the frame out of the air duct, making it easy to take out and put in the screen.

[0027] By adopting the above technical solution, the beneficial effects of the present invention are as follows: The present invention guides the hot air in the oven in an S-shaped flow through the air duct and the middle air outlet, thereby extending the hot air flow in the oven and improving the utilization rate of the hot air. During the flow, the hot air takes away the moisture in the screen, thereby drying the screen. The present invention achieves layer-by-layer isolation of the air duct from top to bottom after drying through the coordinated use of the humidity detector, the first sealing door, and the middle sealing door, thereby avoiding the hot air from continuing to dry the screen and over-drying, thereby protecting the screen and ensuring the adequacy of the screen drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the appearance of a drying device for screen processing of the present invention.

[0029] Figure 2 It is a cross-sectional schematic diagram of the drying device for screen processing of the present invention.

[0030] Figure 3 It is an axonometric schematic diagram of the bracket portion of the present invention.

[0031] Figure 4 It is a schematic structural diagram of the rolling element part of the present invention.

[0032] Figure 5 It is a schematic structural diagram of the driving device part of the present invention.

[0033] Figure 6 It is a three-dimensional schematic diagram of the driving device to the rolling element part of the present invention.

[0034] Figure 7 It is a three-dimensional schematic diagram of the main shaft part of the present invention.

[0035] Reference numerals: 100. Controller; 1. Oven; 11. Air inlet chamber; 12. Air duct; 13. Air outlet chamber; 14. Air supply device; 15. Air exhaust device; 16. First sealed door; 161. Door body; 162. Telescopic device; 17. Middle air outlet; 171. Middle sealed door; 172. Hygrometer; 18. External passage; 181. Second sealed door; 182. Hygrometer; 19. Temperature control sealed door; 2. bracket; 21. frame; 211. groove; 22. rolling element; 23. cover plate; 231. handle; 3. Wind deflector; 31. Deflection axis; 41. toothed plate; 42. transmission gear; 431. main shaft; 432. rack and pinion mechanism; 51. Toothed belt; 52. Sub-gear; 53. Main gear. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] Combine the following Figures 1 to 7 The drying device for screen processing of the present invention is described.

[0038] like Figure 1 and Figure 2As shown, the drying device for screen processing of the present invention comprises an oven 1, the interior of the oven 1 is formed with an air inlet chamber 11, an air duct 12 and an air outlet chamber 13 from left to right, and an air supply device 14 and an air exhaust device 15 are respectively installed at the left and right ends of the oven 1, the air supply device 14 is connected to the air inlet chamber 11, and the air exhaust device 15 is connected to the air outlet chamber 13. In this embodiment, both the air supply device 14 and the air exhaust device 15 can be exhaust fans, the air supply device 14 is used to draw outside air into the oven 1, and the air exhaust device 15 is used to draw the air in the oven 1 to the outside. It should be noted that an existing electric heating element can be placed in the air supply device 14, so that the air drawn into the oven 1 is hot air. In other embodiments, the inner wall of the oven 1 can also be paved with heating wires, so that the outside air can be heated after entering, thereby realizing the conversion of the outside air into hot air.

[0039] The air duct 12 has multiple layers and is evenly spaced up and down. Each layer of the air duct 12 extends in the left-right direction, and the left end of the air duct 12 is connected to the air inlet chamber 11. A first sealing door 16 is provided at the connection between the two. The first sealing door 16 includes a door body 161 and a telescopic device 162. The telescopic device 162 is embedded in the box body. The door body 161 is connected to the telescopic end of the telescopic device 162. When the telescopic device 162 performs a telescopic action to control the door body 161 to move up and down, the door body 161 can close or open the connecting area between the air duct 12 and the air inlet chamber 11, thereby controlling the connection between the air duct 12 and the air inlet chamber 11.

[0040] Two adjacent layers of air ducts 12 are connected through the middle air vents 17 opened on the oven 1. The middle air vents 17 are distributed in an S shape from top to bottom. Therefore, after the hot air from the air inlet chamber 11 enters the air duct 12, it will flow in an S shape from top to bottom along the multi-layer air ducts 12, thus extending the hot air flow and improving the utilization rate of the hot air. The middle air vent 17 is provided with a middle sealing door 171 and a humidity detector installed on the oven 1. The middle sealing door 171 is used to control the opening and closing of the middle air vent 17. Its structure is the same as the first sealing door 16 and will not be repeated here. The humidity detector is used to detect the air humidity at the middle air vent 17. Specifically, the humidity detector can directly use a hygrometer 172. It is worth noting that the bottom air duct 12 is connected to the air outlet chamber 13 through the outer channel 18. The connection point between the outer channel 18 and the bottom air duct 12 is offset from the middle air vent 17 entering the bottom air duct 12, thus ensuring the continuation of the S-shaped flow path. The connecting point between the outer duct 18 and the bottom air duct 12 is provided with a second sealed door 181 and a hygrometer 182 installed on the oven 1. The second sealed door 181 is used to control the connection between the bottom air duct 12 and the outer duct 18. The structure is the same as that of the first sealed door 16 and will not be repeated here. The hygrometer 182 is used to detect the air humidity at the connecting point between the bottom air duct 12 and the outer duct 18.

[0041] Continue to refer Figures 1 to 3Each layer of the air duct 12 is provided with a bracket 2 for supporting the screen, and the bracket 2 includes a frame 21 and a rolling member 22. The frame 21 is arranged in the air duct 12, and the left and right ends of the frame 21 are slidably assembled with the oven 1 through a guide rail structure, so that the frame 21 can be pulled out of the air duct 12. This connection method is similar to a drawer and will not be described in detail. The front side of the frame 21 has a cover plate 23, which is used to close the front opening of the air duct 12 to prevent the air duct 12 from leaking out. The side of the cover plate 23 facing away from the air duct 12 is fixed with a handle 231, which is used for a person to hold, so as to facilitate the pulling action.

[0042] The plurality of rolling elements 22 are placed inside the frame 21 and are evenly spaced along the extension direction of the air duct 12. The rolling elements 22 are arranged along the front-back direction and both ends are rotatably connected to the frame 21. The interval area between the plurality of rolling elements 22 constitutes a hollow part of the bracket 2, which is convenient for the passage of hot air, and realizes the layered flow of hot air on the upper and lower sides of the bracket 2, so that the hot air can act on the whole body of the screen.

[0043] When in use, a screen can be placed on each layer of the bracket 2, and the rolling element 22 bears the weight of the screen. The first sealing door 16, all the middle sealing doors 171 and the second sealing door 181 of the top layer are opened, and the hot air from the air inlet chamber 11 flows in from the top layer air duct 12, and then passes through each air duct 12 and the middle air outlet 17 from top to bottom in sequence. Under the guidance of the air duct 12 and the middle air outlet 17, the hot air flows in an S shape, and dries the screen and takes away the moisture in the screen during the flow. At this time, the rolling element 22 can be reciprocated, and the rolling element 22 drives the screen to slide back and forth in a small range in the left and right directions, changing the contact point of the screen and accelerating the drying of the screen. Since the top-layer screen is affected by the hot air first, it will be dried first. At this time, at the middle air outlet 17 between the top-layer air duct 12 and the second-layer air duct 12, the hygrometer 172 will detect that the humidity in the hot air is close to 0, thereby determining that there is no moisture in the top-layer screen and the drying purpose is completed. At this time, the hygrometer 172 can control the first sealing door 16 corresponding to the top-layer air duct 12 to be closed, and the middle sealing door 171 between the top-layer air duct 12 and the second-layer air duct 12 to be closed. Therefore, the first sealing door 16 realizes the isolation between the top-layer air duct 12 and the air inlet chamber 11, and the middle sealing door 171 realizes the isolation between the top-layer air duct 12 and the second-layer air duct 12. The top-layer air duct 12 is completely independent from the hot air flow system, thereby avoiding the continued drying of the top-layer screen by the hot air, and ensuring the drying effect of the top-layer screen.

[0044] At the same time, the hygrometer 172 can also control the first sealing door 16 corresponding to the second-layer air duct 12 to open, and the hot air continues to flow downward from the second-layer air duct 12. By analogy, the second-layer screen and subsequent screens will be dried step by step and separated one by one, avoiding deformation of the screen in the screen due to excessive drying, thereby protecting the screen. Therefore, the device protects each layer of screen by closing the screen during drying, avoiding insufficient drying of the screen and excessive drying of the screen, and ensuring the drying effect of each layer of the screen.

[0045] It can be understood that a controller 100 can be installed on the oven 1, and the hygrometer 172, the hygrometer 182, the first sealing door 16, the middle sealing door 171, and the second sealing door 181 are all electrically connected to the controller 100. The controller 100 is used to receive feedback information from each electronic control device, thereby controlling the movement of the corresponding equipment and realizing the diversion of the hot air.

[0046] Continue to refer Figure 2 The end of the air duct 12 away from the air supply device 14 is connected to the air outlet cavity 13, and then the air outlet cavity 13 is connected to the outside. The oven 1 is equipped with a temperature-controlled sealed door 19 located at the end of the air duct 12 away from the air supply device 14. The temperature-controlled sealed door 19 is used to control the connection between the air duct 12 and the air outlet cavity 13. The structure of the temperature-controlled sealed door 19 is the same as that of the first sealed door 16, which will not be repeated here.

[0047] When the air duct 12 is separated out, the temperature-controlled sealing door 19 can be turned from a closed state to an open state, thereby realizing the conduction between the air duct 12 and the air outlet chamber 13. The air duct 12 is connected to the outside world through the air outlet chamber 13 and the exhaust device 15. The normal temperature air of the outside world can gradually penetrate into the hot air in the air duct 12, thereby realizing the gradual cooling of the air duct 12 and the slow cooling of the screen. In this way, it is avoided that the screen encounters the outside air and the temperature drops suddenly, resulting in rapid cooling when it is pulled out with the bracket 2 after the drying work is completed. The slow cooling ensures the structural stability of the screen.

[0048] Continue to refer Figure 2 The air duct 12 is provided with a plurality of plate groups equally spaced along its extension direction, the plate group includes two air guide plates 3 opposite to the upper and lower sides of the bracket 2, and the air guide plates 3 are inclined toward the bracket 2 so as to guide the hot air to the bracket 2.

[0049] When the hot air flows in the left-right direction in the air duct 12, it will become an inclined flow under the guidance of the air guide plate 3 and flow toward the bracket 2, thereby generating a proper impact on the screen on the bracket 2, thereby improving the drying efficiency of the screen.

[0050] Continue to refer Figure 2 , Figure 5 and Figure 6The front and rear ends of the air guide plate 3 are fixed with deflection shafts 31, and the two deflection shafts 31 are rotatably mounted on the front and rear side walls of the oven 1, respectively. The oven 1 is provided with a driving device for controlling the deflection of the air guide plate 3. The air guide plate 3 can adjust the flow direction of the hot air when deflecting, so that the impact angle of the hot air on the screen changes within an appropriate range, so that the impact of the hot air on the screen is more uniform and comprehensive, which not only avoids damage to the screen caused by long-term fixed-point impact, but also improves the drying efficiency of the screen.

[0051] The driving device includes a tooth plate 41, a transmission gear 42 and a power member. The tooth plate 41 is slidably mounted on the rear side wall of the oven 1 along the extension direction of the air duct 12; a plurality of transmission gears 42 correspond to a plurality of air guide plates 3 one by one, the transmission gears 42 are fixed on the deflection shaft 31 at the rear end of the corresponding air guide plate 3, and the transmission gears 42 are meshed with the tooth plate 41; the power member is mounted on the oven 1 and is used to drive the tooth plate 41 to slide.

[0052] The power part includes a main shaft 431 and a power motor (not shown in the figure). The main shaft 431 is rotatably mounted on the rear side wall of the oven 1, and the main shaft 431 is connected to the gear plate 41 through a gear rack mechanism 432; the power motor is mounted on the rear side wall of the oven 1 and is used to drive the main shaft 431 to rotate.

[0053] When the power motor drives the main shaft 431 to rotate, the main shaft 431 drives the tooth plate 41 to slide through the gear rack mechanism 432, the tooth plate 41 drives the transmission gear 42 to rotate, and the transmission gear 42 drives the air guide plate 3 to deflect through the deflection shaft 31, thereby realizing the adjustment of the hot air flow direction by the air guide plate 3. It is worth noting that the power motor can realize the reciprocating deflection of the air guide plate 3 by forward and reverse rotation, so that the air guide plate 3 forms a reciprocating swing effect, so that the hot air dries the screen more evenly.

[0054] Continue to refer Figures 2 to 7 In order to realize the automatic rotation of the rolling element 22, a belt transmission mechanism or a chain transmission mechanism is connected between the rolling element 22 and the main shaft 431. In this way, when the main shaft 431 rotates, the rolling element 22 can be driven to rotate by the belt transmission mechanism or the chain transmission mechanism, thereby realizing a small sliding of the screen. The linkage between the rolling element 22 and the main shaft 431 improves the automation of the device, avoids manual operation of the rolling element 22, and saves time and effort.

[0055] Taking the belt transmission mechanism as an example, the belt transmission mechanism includes a toothed belt 51, a sub-gear 52 and a main gear 53. A groove 211 is provided on the rear side of the frame 21, and the toothed belt 51 is buried in the groove 211. The rear end of the rolling element 22 penetrates into the groove 211, and a plurality of sub-gears 52 are respectively fixed on the rear ends of a plurality of rolling elements 22, and the sub-gears 52 are located on the inner side of the toothed belt 51, and the sub-gears 52 are meshed with the toothed belt 51. The leftmost and rightmost sub-gears 52 tighten the left and right ends of the toothed belt 51, thereby ensuring a stable meshing relationship between the toothed belt 51 and each sub-gear 52. One end of the main shaft 431 extends into the groove 211, and the main gear 53 is fixed on this end of the main shaft 431 and meshes with the toothed belt 51.

[0056] When the main shaft 431 rotates, it drives the main gear 53 to rotate, and the main gear 53 drives the toothed belt 51 to make a circular motion, and the toothed belt 51 drives each sub-gear 52 to rotate, thereby realizing the synchronous rotation of multiple rolling elements 22 so that the screen can slide in the left and right direction.

[0057] It is worth noting that after drying, when the frame 21 is pulled out of the air duct 12, the sub-gear 52 and the tensioned toothed belt 51 will leave together with the frame 21, and at this time the toothed belt 51 will gradually disengage from the main gear 53, and the two will separate. The use of gear meshing avoids interference and restriction between the transmission components, ensuring the smooth removal of the frame 21. When the frame 21 is pushed into the air duct 12 again, the main shaft 431 can be automatically aligned with the groove 211 and inserted into the groove 211, and the main gear 53 can also re-engage with the toothed belt 51.

[0058] refer to Figures 1 to 7 The working process of the drying device for screen processing of the present invention is as follows: The first step is to place the screen. The bracket 2 is pulled out of the air duct 12, and the screen is placed on the bracket 2. The rolling element 22 supports the screen. Then the bracket 2 is pushed back into the air duct 12, thereby placing the screen in the air duct 12.

[0059] The second step is screen drying, the controller 100 controls the first sealing door 16, all the middle sealing doors 171 and the second sealing door 181 to open, and starts the air supply device 14 and the exhaust device 15. The outside air flows into the air inlet cavity, flows into the top air duct 12 after being heated, and then flows along the arrangement direction of the air duct 12 and the middle air outlet 17. The flow path of the hot air is S-shaped and flows from top to bottom. The hot air takes away the moisture in the screen during the flow, and the screen is dried.

[0060] At the same time, the power motor starts, and the power motor drives the tooth plate 41 to slide through the main shaft 431, and the tooth plate 41 drives the air guide plate 3 to deflect through the transmission gear 42, thereby realizing the adjustment of the hot air flow direction by the air guide plate 3, so that the hot air can evenly and comprehensively impact the screen, thereby improving the drying efficiency of the screen. The reciprocating deflection of the air guide plate 3 can be achieved by alternating positive and reverse rotation of the power motor, so that the air guide plate 3 forms a reciprocating swinging effect, so that the hot air keeps the screen drying uniformly.

[0061] At the same time, the main shaft 431 drives the main gear 53 to rotate, and the main gear 53 drives the sub-gears 52 to rotate through the toothed belt 51, thereby realizing the synchronous rotation of multiple rolling elements 22, and the rolling elements 22 drive the screen to slide back and forth in a small range in the left and right directions. As a result, the contact point between the screen and the rolling elements 22 will change, so that the hidden parts of the screen due to contact with the rolling elements 22 are exposed, thereby making the screen dry more comprehensively, and the reciprocating sliding of the screen also speeds up the drying of the screen.

[0062] The third step is screen protection. Since the top screen is affected by the hot air first, it will be dried first. At this time, at the middle air outlet 17 between the top air duct 12 and the second air duct 12, the hygrometer 172 will detect that the humidity in the hot air is close to 0, thereby determining that there is no moisture in the top screen and completing the drying purpose. At this time, the hygrometer 172 can control the first sealing door 16 corresponding to the top air duct 12 to be closed through the controller 100, and the middle sealing door 171 between the top air duct 12 and the second air duct 12 is closed. Therefore, the first sealing door 16 realizes the isolation between the top air duct 12 and the air inlet chamber 11, and the middle sealing door 171 realizes the isolation between the top air duct 12 and the second air duct 12. The top air duct 12 is completely independent from the hot air flow system, avoiding the continued drying of the top screen by the hot air, thereby ensuring the drying effect of the top screen.

[0063] At the same time, the hygrometer 172 can also control the first sealing door 16 corresponding to the second-layer air duct 12 to open through the controller 100, and the hot air continues to flow downward from the second-layer air duct 12. Similarly, the second-layer screen and subsequent screens will be dried step by step and separated one by one, avoiding damage to the screen due to excessive drying, thereby protecting the screen. Therefore, by closing the screen during drying, insufficient drying of the screen and excessive drying of the screen are avoided, and the drying effect of each layer of the screen is guaranteed.

[0064] In this embodiment, the telescopic device 162 can be any one of an electric push rod and a telescopic motor. The telescopic device 162 is electrically connected to the controller 100. The controller 100 controls the telescopic action of the telescopic device 162 to open and close the door 161, thereby diverting the hot air. The rolling element 22 can be a roller, a roller, a rolling shaft, etc.

[0065] In other embodiments, the power member for driving the tooth plate 41 to slide may also be an electric guide rail, an electric telescopic rod, a hydraulic rod, a pneumatic telescopic rod, etc.

[0066] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A drying device for screen processing, comprising a drying oven (1), wherein the drying oven (1) is provided with an air supply device (14) for supplying hot air to the inside thereof, characterized in that: The oven (1) has multiple layers of air ducts (12) spaced apart from each other, each layer of the air ducts (12) is connected to the air supply device (14), and a first sealing door (16) installed on the oven (1) is provided at the connection point between the two, and the first sealing door (16) is used to control the connection between the air ducts (12) and the air supply device (14); Two adjacent layers of air ducts (12) are connected via an intermediate air outlet (17) provided on the oven (1), wherein the plurality of intermediate air outlets (17) are distributed in an S-shape from top to bottom, wherein the intermediate air outlet (17) is provided with an intermediate sealing door (171) and a humidity detector installed on the oven (1), wherein the intermediate sealing door (171) is used to control the opening and closing of the intermediate air outlet (17), and the humidity detector is used to detect the air humidity at the intermediate air outlet (17); A bracket (2) for supporting a screen is provided in each layer of the air duct (12), and at least a portion of the bracket (2) is hollow or fence-shaped.

2. The drying device for screen processing according to claim 1, characterized in that: One end of the air duct (12) away from the air supply device (14) is connected to the outside world, and the oven (1) is provided with a temperature-controlled sealed door (19) located at the end of the air duct (12) away from the air supply device (14), and the temperature-controlled sealed door (19) is used to control the connection and disconnection between the air duct (12) and the outside world.

3. The drying device for screen processing according to claim 1, characterized in that: Two air guide plates (3) are arranged in the air duct (12) and are arranged opposite to each other on the upper and lower sides of the bracket (2); the air guide plates (3) are inclined toward the bracket (2) so as to guide the hot air onto the bracket (2).

4. The drying device for screen processing according to claim 3, characterized in that: The two air guide plates (3) form a plate group, and the plate group is arranged in plurality along the extension direction of the air duct (12).

5. The drying device for screen processing according to claim 3, characterized in that: The air guide plate (3) is rotatably mounted on the oven (1), and a driving device for controlling the deflection of the air guide plate (3) is provided on the oven (1). When the air guide plate (3) is deflected, the flow direction of the hot air relative to the bracket (2) can be controlled.

6. The drying device for screen processing according to claim 5, characterized in that: The driving device comprises a toothed plate (41), a transmission gear (42) and a power member; the toothed plate (41) is slidably mounted on the oven (1) along the extension direction of the air duct (12); a plurality of transmission gears (42) are respectively fixed on the deflection shafts (31) of a plurality of air guide plates (3); the transmission gears (42) are meshed with the toothed plate (41); and the power member is mounted on the oven (1) and is used to drive the toothed plate (41) to slide.

7. The drying device for screen processing according to claim 6, characterized in that: The power component comprises a main shaft (431) and a power motor; the main shaft (431) is rotatably mounted on the oven (1) and is connected to the toothed plate (41) via a gear rack mechanism (432) so as to drive the toothed plate (41) to slide when rotating; the power motor is mounted on the oven (1) and is used to drive the main shaft (431) to rotate.

8. The drying device for screen processing according to claim 7, characterized in that: The bracket (2) comprises a frame (21) and a rolling member (22); the frame (21) is installed in the air duct (12); a plurality of rolling members (22) are arranged inside the frame (21) and are spaced apart along the extension direction of the air duct (12); the rolling members (22) are rotatably connected to the frame (21); a belt transmission mechanism or a chain transmission mechanism is connected between the rolling member (22) and the main shaft (431), so that when the main shaft (431) rotates, the rolling member (22) can be driven to rotate.

9. The drying device for screen processing according to claim 8, characterized in that: The belt transmission mechanism comprises a toothed belt (51), a sub-gear (52) and a main gear (53); the toothed belt (51) is embedded in the frame (21); a plurality of sub-gears (52) are respectively fixed on a plurality of rolling elements (22); the sub-gears (52) are located inside the toothed belt (51) and mesh with the toothed belt (51); the sub-gears (52) on both sides tighten the two ends of the toothed belt (51); the main gear (53) is fixed on the main shaft (431) and meshes with the toothed belt (51).

10. The drying device for screen processing according to claim 8, characterized in that: The frame (21) is slidably mounted on the oven (1) and is capable of drawing out the air duct (12); a handle (231) for a person to hold is provided on the frame (21).

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