A solution printing and drying apparatus

Abstract

The present application belongs to the field of inkjet printing technology, and particularly relates to a solution printing and drying device and a drying method thereof. The device comprises a drying box, a controller and a box cover arranged on the drying box, a fixing frame arranged in the drying box, side plates connected to both sides of the fixing frame, a fixing slide rail arranged between the side plates, and an inkjet printing system arranged on the fixing slide rail. The film layer is dried by using the combination of airflow blowing and heating of the object table, the problem that inkjet printing and drying cannot be integrated under a high-vacuum system is solved, a new printing processing device is provided, the equipment cost and the space occupation volume are significantly reduced, the solution printing equipment is integrated with printing and drying, the film layer can be freely dried during the printing process, and the problem of uneven film layer drying caused by the fact that some easily-dried solution systems are dried at the starting position before the ending position during printing is avoided.

Description

A solution printing and drying device Technical Field

[0001] This invention belongs to the field of inkjet printing technology, specifically relating to a solution printing and drying device and its drying method. Background Technology

[0002] Solution printing (inkjet printing) technology, as a solution processing technology that allows for precise control of the printing position, has an extremely high material utilization rate (>90%) and is widely used in various fields.

[0003] Controlling the drying rate of the printed film is an extremely important step. If the drying rate is too slow, coffee-colored rings may form on the film; if the drying rate is too fast, the film surface may become rough, leading to a decrease in device performance. Therefore, controlling the film drying rate is one of the key factors in obtaining high-performance inkjet-printed devices.

[0004] Currently, the commonly used drying process for printed films is vacuum drying. This involves placing the printed, wet film in a sealed chamber and using mechanical or molecular pumps to create a vacuum, bringing the chamber to a negative pressure state, thus removing the solvent from the wet film. The drying speed can be controlled by adjusting the vacuum rate and the magnitude of the negative pressure.

[0005] In existing inkjet printing and drying systems, the printing and drying units are often separate. This is because inkjet printing systems contain extremely delicate printing assembly components that are not suitable for storage under high vacuum; furthermore, inkjet printing systems contain the liquid required for printing, which would be extracted under high vacuum. Therefore, it is impossible to achieve integrated printing and drying in a vacuum system, increasing equipment costs and space usage. Summary of the Invention

[0006] In order to overcome the problems of existing high vacuum drying systems, such as the inability to integrate printing and drying equipment, the large space occupation of two sets of equipment, and the high cost of high vacuum equipment, the purpose of this invention is to provide a solution printing and drying equipment and drying method with low cost and small space occupation.

[0007] One object of the present invention is to provide a low-cost, space-saving solution printing and drying device. The device includes a drying chamber with a controller and a lid. A fixed frame is located inside the drying chamber, with side plates connected to both sides of the frame. A fixed slide rail is provided between the side plates, and an inkjet printing system is mounted on the slide rail. A housing surrounds the inkjet printing system, with the bottom of the system 0.1–100 mm higher than the bottom of the housing to prevent direct airflow from blowing onto the printhead during drying and causing ink clogging. A CCD camera is mounted on the inkjet printing system for observing the ink droplet ejection state, substrate defects, and printed film quality. The printing system has multiple inkjet printheads inside. An array of flow holes is arranged on the side plate. An adjustment mechanism on the fixed frame is used to adjust the size of the gas flow area within the flow holes. A ventilation plate is connected to the top of the fixed frame. A blower is installed on the top of the drying chamber. The top of the ventilation plate has a circular hole identical to the blower's outlet. An airflow channel is formed between the ventilation plate and the fixed frame. A stage for supporting the substrate is located inside the fixed frame. A heating wire electrically connected to the controller is installed on the stage. A temperature sensor electrically connected to the controller is also installed on the stage. The adjustment mechanism on the fixed frame is used to adjust the size of the gas flow area within the flow holes.

[0008] As a further preferred embodiment, the adjustment mechanism includes a connecting plate and a baffle. The baffle has two pieces and contacts the two side plates respectively. The tops of the two side plates are fixedly connected by the connecting plate. The connecting plate is slidably connected to the fixed frame. The baffle has flow holes that correspond one-to-one with the side plates.

[0009] As a further preferred embodiment, a limiting mechanism is also included, which includes a guide frame, a sliding rod, a limiting rod, and a wedge rod. The guide frame is horizontally connected to the side of the platform. Sliding rods are slidably provided on both sides of the guide frame. A limiting rod is slidably provided on the top of each sliding rod and is horizontally positioned above the platform. Each sliding rod on both sides is connected to a wedge rod extending toward the adjacent side plate. Both the side plate and the baffle are provided with vertical grooves that are interconnected. The wedge rod passes through both vertical grooves.

[0010] As a further preferred embodiment, a transmission mechanism is also included. The transmission mechanism comprises an impeller, a rubber wheel, a partition, a sliding frame, a connecting frame, and an elastic element. Impellers are rotatably connected to both sides of the ventilation plate. Partitions are connected to both sides of the top of the fixed frame. The partitions on both sides are located between the impellers on both sides. A flow gap is left between the top of the partition and the ventilation plate. Rubber wheels are connected to the ends of the impellers. Sliding frames are slidably passed through both sides of the top of the fixed frame. The sliding frames contact the adjacent rubber wheels. A connecting frame is connected to the lower part of the limiting rod. The connecting frame slides with the adjacent sliding frame. An elastic element is connected between the sliding rod and the limiting rod.

[0011] As a further preferred embodiment, an air guiding mechanism is also included. The air guiding mechanism includes an air guiding plate, a slide rail, a pusher, and an elastic element two. Multiple air guiding plates for restricting the gas flow direction are rotatably connected to the side of the two side plates that are close to each other. A slide rail is connected to the side of the two side plates that are close to each other. A pusher for pushing the air guiding plate downwards slides through the slide rail. The pusher contacts the air guiding plate. An elastic element two is connected between the air guiding plate and the side plate.

[0012] As a further preferred embodiment, it also includes an ejection mechanism, which includes a top frame and a handle. The top frame for lifting the substrate slides through the platform, and the bottom of the top frame has a handle.

[0013] As a further preferred embodiment, a temperature control mechanism is also included, which includes a heater and a second temperature sensor. The heater is installed at the top of the fixed frame for heating the area above the drying chamber, and the second temperature sensor, which is electrically connected to the controller, is installed at the top of the fixed frame.

[0014] Another object of the present invention is to provide a solution printing and drying method, which includes the following steps:

[0015] S1. Open the box cover, place the substrate on the stage, and start printing. During or after printing, adjust the size of the gas flow area in the flow hole according to the size of the substrate. Pull the connecting plate down or up to move the baffle up and down, adjust the gas flow area to a suitable size, and close the box cover.

[0016] S2. The controller controls the heating wire to heat the stage and the interior of the drying chamber. The temperature sensor feeds back the temperature signal to the controller. The controller controls the heating wire to keep the temperature inside the drying chamber and the stage within a suitable range.

[0017] S3. After the temperature reaches the preset value, select the appropriate ink and printing parameters to start printing the substrate. During or after printing, start the blower and adjust the blower speed to a suitable range so that the blower blows gas into the drying chamber. The gas, combined with the temperature inside the drying chamber and the temperature on the stage, blows the film layer to dry it, resulting in a film layer with uniform thickness and low roughness.

[0018] S4. After printing is completed, turn off the inkjet printing system. After the film is dried, turn off the blower. Control the heating wire to turn off through the controller. Open the box cover and remove the substrate from the stage.

[0019] As a further preferred embodiment, in S2, the temperature of the heating wire is precisely adjustable, with an adjustable range of 0-250°.

[0020] As a further preferred embodiment, in S3, the wind speed adjustment range of the hair dryer is 0 to 100 m / s.

[0021] The present invention has the following beneficial effects:

[0022] This invention uses a combination of airflow blowing and stage heating to dry the film layer, solving the problem that inkjet printing and drying cannot be integrated under high vacuum systems. It provides a new printing and processing device that significantly reduces equipment costs and space occupancy. With the integrated printing and drying solution printing device, film drying can be freely selected during the printing process, avoiding the problem of uneven film drying caused by some easily dryable solution systems drying at the beginning of printing before the end.

[0023] This invention, through the cooperation of a limiting mechanism and a transmission mechanism, enables the limiting rod to move downwards to limit the substrate during the film drying process, preventing the substrate from shifting randomly during the drying process and ensuring that the drying process can proceed smoothly.

[0024] The present invention, through the ejection mechanism, can lift the substrate by the top frame after the film layer is dried, making it easy to remove the substrate, thus optimizing the operation process of the device and making it convenient to use. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the structure of the present invention.

[0026] Figure 2 is a partial structural diagram of the present invention after the lid is hidden.

[0027] Figure 3 is a partial structural schematic diagram of the present invention.

[0028] Figure 4 is an exploded view of some components of the present invention.

[0029] Figure 5 is a schematic diagram showing the positions of the adjustment mechanism, the limiting mechanism, and the transmission mechanism of the present invention.

[0030] Figure 6 is a schematic diagram of the adjustment mechanism of the present invention.

[0031] Figure 7 is a cross-sectional view of the ventilation plate and adjustment mechanism of the present invention.

[0032] Figure 8 is a schematic diagram of the limiting mechanism and transmission mechanism of the present invention.

[0033] Figure 9 is a partial structural schematic diagram of the limiting mechanism and transmission mechanism of the present invention.

[0034] Figure 10 is a schematic diagram of the position of the air guiding mechanism of the present invention.

[0035] Figure 11 is a partial structural schematic diagram of the air guiding mechanism of the present invention.

[0036] Figure 12 is an enlarged view of part A of Figure 11 of the present invention.

[0037] Figure 13 is a schematic diagram showing the positions of the stage and ejection mechanism of the present invention.

[0038] Figure 14 is an exploded view of the stage and ejection mechanism of the present invention.

[0039] Figure 15 is a schematic diagram showing the positions of the fixing frame and the temperature control mechanism of the present invention.

[0040] The components are: 1-Drying oven, 2-Crate lid, 3-Blower, 4-Fixing frame, 5-Side plate, 6-Ventilation plate, 7-Platform, 8-Temperature sensor 1, 9-Adjusting mechanism, 91-Connecting plate, 92-Baffle, 10-Limiting mechanism, 101-Guide frame, 102-Slide rod, 103-Limiting rod, 104-Wedge rod, 11-Transmission mechanism, 111-Impeller roller, 112-Rubber wheel, 113-Partition, 114-Sliding mechanism. Frame, 115-Connecting frame, 116-Elastic component one, 12-Air guide mechanism, 121-Air guide plate, 122-Slide rail, 123-Push frame, 124-Elastic component two, 13-Ejection mechanism, 131-Top frame, 132-Handle, 14-Temperature control mechanism, 141-Heater, 142-Temperature sensor two, 15-Printing system, 16-CCD camera, 17-Inkjet printhead, 18-Fixed slide rail, 19-Baseboard. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0042] A solution printing and drying device, as shown in Figures 1-6, includes a drying chamber 1, a chamber lid 2, a blower 3, a fixing frame 4, side plates 5, a ventilation plate 6, a stage 7, a temperature sensor 8, an adjustment mechanism 9, an inkjet printing system 15, a CCD camera 16, an inkjet printhead 17, and a fixed slide rail 18. The chamber lid 2, made of transparent glass, is rotatably connected to the upper front side of the drying chamber 1. An electrically connected controller is installed on the drying chamber 1. The blower 3 is mounted on the top of the drying chamber 1. The gas blown by the blower 3 can be a protective gas such as nitrogen, argon, helium, or a nitrogen-argon mixture, or it can be CDA gas, oxygen, or a nitrogen-oxygen mixture. The specific gas type is not specified. The drying atmosphere is selected according to the requirements of the printing device. A fixed frame 4 is connected inside the drying chamber 1. The fixed frame 4 contains a drying chamber. The left, right, and front sides of the fixed frame 4 have openings. The cover 2 blocks the front opening of the fixed frame 4. Exhaust vents are located on the rear side of both the fixed frame 4 and the rear side of the drying chamber 1. Side plates 5 are connected to the openings on both sides of the fixed frame 4. A fixed slide rail 18 is provided between the side plates 5. An inkjet printing system 15 is mounted on the fixed slide rail 18. A CCD camera 16 is mounted on the inkjet printing system 15. The CCD camera is used to observe the ink droplet ejection state, substrate defects, and the quality of the printed film. The drying chamber 15 contains multiple sets of inkjet printheads 17. An external housing surrounds the inkjet printing system 15, with the bottom of the system 0.1–100 mm higher than the bottom of the housing to prevent direct airflow from clogging the printheads during drying. The housing is made of transparent material for easy observation of the inkjet printing process. The system can accommodate multiple sets of printheads 17, enabling simultaneous printing with different solutions. An array of flow holes is arranged on the side plate 5; these holes can be circular, elliptical, triangular, quadrilateral, pentagonal, hexagonal, etc. A blower 3 is installed on the top of the drying chamber 1, and the top of the ventilation plate 6 has a connection point with the blower 3. The ventilation plate 6 and the fixed frame 4 form an airflow channel with the same round holes as the air outlets. The air blown out by the blower 3 can enter the drying chamber through the airflow channel and the flow hole. The bottom of the fixed frame 4 is connected to a platform 7 for supporting the substrate. The platform 7 is provided with a heating wire electrically connected to the controller. Temperature sensors 8 electrically connected to the controller are evenly spaced on the platform 7. The temperature sensors 8 are distributed at the center and four corners of the platform 7 to measure the temperature at various points on the platform 7. The fixed frame 4 is provided with an adjustment mechanism 9 for adjusting the size of the gas flow area in the flow hole.

[0043] As shown in Figures 2, 5, and 6, the adjusting mechanism 9 includes a connecting plate 91 and a baffle 92. The connecting plate 91 is symmetrically slidably connected to the fixed frame 4. There is a large friction between the connecting plate 91 and the fixed frame 4. Baffles 92 are connected between the bottom left and bottom right sides of the connecting plates 91 on both sides. The baffles 92 are slidably engaged with the side plates 5. The baffles 92 have flow holes that correspond one-to-one with the side plates 5. The flow holes on the side plates 5 communicate with the flow holes on the baffles 92.

[0044] In use, open the cover 2 and place the substrate on the stage 7. Pull down the connecting plate 91, which moves the baffle 92 downward. The baffle 92 gradually blocks the flow hole on the side plate 5, thus reducing the gas flow area within the flow hole. To increase the flow hole size, pull up the connecting plate 91, which moves the baffle 92 upward. The baffle 92 gradually stops blocking the flow hole on the side plate 5, increasing the gas flow area within the flow hole. This allows for free adjustment of the gas flow area size within the flow hole. After adjusting the gas flow area to a suitable size, close the cover 2 and activate the heating wire via the controller. The heating wire heats the stage 7 and the interior of the drying chamber. During heating, the temperature sensor 8 monitors the temperature at various points on the stage 7. If the temperature is too high or too low, the temperature sensor 8 transmits a corresponding signal to the controller. The controller then controls the heating wire to increase or decrease the temperature based on the received signal, ensuring that the temperature inside the drying chamber and on the stage 7 remains at 40°C. When the substrate and stage temperature reach the preset 40°C, the inkjet printing system 15 is turned on and printing begins. Simultaneously, the blower 3 is activated, with its speed controlled at 3.5 m / s. This blower speed, combined with the size of the gas flow area, regulates the gas flow, allowing for control of different drying speeds and saving gas flow, thus achieving energy conservation. The gas blown out by the blower 3 then enters the drying chamber through the airflow channel and the flow holes on the side plate 5 and baffle 92. The gas, combined with the temperature inside the drying chamber and on the stage 7, blows across the film layer, drying it. The dried film layer has a uniform thickness and low roughness. During the process, the exhaust port can discharge gas. After printing is completed, the inkjet printing system 15 is turned off. When the film layer is dry, the blower 3 is turned off, the heating wire is turned off by the controller, the box cover 2 is opened, the substrate on the stage 7 is removed, and finally the box cover 2 is closed. By performing the above operations, this device can be used to dry the film layer. This device can effectively adjust the drying speed by using a combination of airflow blowing and stage 7 heating, and achieves the drying operation of film layer with uniform thickness and low roughness. Since the drying chamber does not require high airtightness, there is no need to use high-performance mechanical pumps, molecular pumps and other vacuum equipment, which significantly reduces the cost of inkjet printing drying.

[0045] Based on Embodiment 1, as shown in Figures 2, 5, 7, and 8, a limiting mechanism 10 is also included. The limiting mechanism 10 includes a guide frame 101, a slide rod 102, a limiting rod 103, and a wedge rod 104. The guide frame 101 is connected to both the front and rear sides of the platform 7. The slide rod 102 is symmetrically slidably connected to the guide frame 101. A limiting rod 103 for limiting the substrate is slidably connected between the slide rods 102 on the left and between the slide rods 102 on the right. A wedge rod 104 that slides through the side plate 5 and the baffle 92 is connected to the side of the slide rod 102 near the side plate 5. The side of the wedge rod 104 near the side plate 5 is shaped like a hook. After the side plate 5 moves downward, the wedge rod 104 can be moved away from the side plate 5 by squeezing the hook-shaped part of the wedge rod 104.

[0046] As shown in Figures 2, 5, 7, 8, and 9, a transmission mechanism 11 is also included. The transmission mechanism 11 includes an impeller 111, a rubber wheel 112, a partition 113, a sliding frame 114, a connecting frame 115, and an elastic element 116. Impellers 111 rotatably pass through both sides of the ventilation plate 6. Each impeller 111 consists of a rotating roller and several blades. Partitions 113 for wind protection are connected to both sides of the upper part of the fixed frame 4. The partitions 113 on both sides are located between the lower parts of the impellers 111 on both sides. A flow gap is left between the top of the partition 113 and the ventilation plate 6. The partition 113 can block part of the gas blown out by the blower 3, allowing the gas to only pass through the upper flow gap. The blades above the blade roller 111 contact each other, causing the two blade rollers 111 to rotate in opposite directions. Rubber wheels 112 are connected to both ends of the blade roller 111. Sliding frames 114 are symmetrically slidably passed through the left and right sides of the upper part of the fixed frame 4. The sliding frames 114 contact the adjacent rubber wheels 112. There is a large friction between the rubber wheels 112 and the sliding frames 114. Connecting frames 115 are connected to both the front and rear sides of the lower part of the limiting rod 103. The connecting frames 115 slide with the adjacent sliding frames 114. An elastic element 116, which is a tension spring, is connected between the slide rod 102 and the limiting rod 103.

[0047] When the baffle 92 moves downward, reducing the gas flow area, the baffle 92 pushes the two wedge rods 104 together via the hook-shaped portion of the wedge rod 104. The wedge rod 104 then moves the two limiting rods 103 together via the slide rod 102, keeping the limiting rods 103 continuously above the side of the substrate. The movement of the limiting rods 103 simultaneously moves the connecting bracket 115. When the baffle 92 moves upward, increasing the flow hole, the baffle 92 releases the hook-shaped portion of the wedge rod 104. The operator then moves the two limiting rods 103 away from each other, keeping the limiting rods 103 continuously above the side of the substrate. This operation allows the limiting rods 103 to remain above the side of the substrate when adjusting the size of the gas flow area, enabling them to adapt to different substrate sizes. When the blower 3 is activated to dry the film, the gas blown out by the blower 3 moves to the left and right sides through the airflow channel. After moving, the gas is isolated... Plate 113 blocks the flow, allowing gas to pass only through the flow gap. During gas movement, the upper blades of the two side rollers 111 push the two side rollers 111 in opposite directions, causing the rollers 111 to drive the rubber wheel 112 to rotate. The rotating rubber wheel 112, through friction, pushes the sliding frame 114 downwards. The sliding frame 114, via the connecting frame 115, pushes the limiting rod 103 downwards, stretching the elastic element 116. After the limiting rod 103 moves downwards, it can press against the substrate, limiting the substrate's position. To prevent the substrate from shifting arbitrarily during the drying process, the limiting rod 103 cannot move further downwards, causing the impeller 111 and rubber wheel 112 to stop rotating. The gas blown out by the blower 3 will continue to contact the impeller 111, causing the elastic element 116 to continue to stretch. When the drying process is completed and the blower 3 stops blowing gas, the elastic element 116 will reset, causing the limiting rod 103, connecting frame 115 and sliding frame 114 to move upwards and reset. The limiting rod 103 will then release the substrate, which can then be removed.

[0048] As shown in Figures 2, 10, 11, and 12, the system also includes an air guiding mechanism 12. The air guiding mechanism 12 includes an air guiding plate 121, a slide rail 122, a pusher 123, and an elastic element 124. The side plates 5 on both sides are rotatably connected at even intervals to the side plates that are close to each other, and the front of the side plates 5 on both sides is connected to the slide rail 122. The pusher 123 for pushing the air guiding plate 121 downwards slides through the slide rail 122. The pusher 123 contacts the air guiding plate 121, and there is a large friction between the pusher 123 and the slide rail 122. An elastic element 124 is connected between the air guiding plate 121 and the side plate 5. The elastic element 124 is a torsion spring, and the elastic force of the elastic element 124 is small.

[0049] After adjusting the size of the gas flow area, push the pusher 123 downwards. The pusher 123 will push the air guide plate 121 downwards, causing the air guide plate 121 to rotate downwards. The elastic element 124 deforms, and after the air guide plate 121 rotates downwards to the appropriate position, release the pusher 123. Due to the large friction between the pusher 123 and the slide rail 122, the pusher 123 can continuously press against the air guide plate 121. When it is necessary to rotate the air guide plate 121 upwards, pull the pusher 123 upwards. The pusher 123 releases the air guide plate 121, thereby resetting the elastic element 124 and causing the air guide plate 121 to rotate upwards and reset. By performing the above operations, the air guide plate 121 can be rotated to the appropriate angle. The air guide plate 121 can guide the gas. By changing the angle of the air guide plate 121, the direction of gas flow can be changed, which plays a role in assisting in adjusting the drying speed. It is suitable for different needs and has high practicality.

[0050] As shown in Figures 2, 13 and 14, it also includes an ejection mechanism 13, which includes a top frame 131 and a handle 132. The top frame 131 for lifting the substrate slides through the stage 7 to facilitate the removal of the dried substrate. The handle 132 is connected to the front bottom of the top frame 131.

[0051] After the film is dried, the top frame 131 is pulled upward by the handle 132, and the substrate is lifted to a suitable position by the top frame 131. The substrate is then removed, and the top frame 131 is moved downward by the handle 132 to reset it. This makes it convenient for staff to remove the substrate and is easy to use.

[0052] As shown in Figures 2 and 15, a temperature control mechanism 14 is also included. The temperature control mechanism 14 includes a heater 141 and a temperature sensor 142. The heater 141 is installed at the top inside the fixed frame 4 to heat the top of the drying chamber so that the temperature inside the drying chamber is suitable and to avoid temperature difference. The temperature sensor 142, which is electrically connected to the controller, is installed at the top inside the fixed frame 4.

[0053] During the drying process, temperature sensor 142 continuously monitors the temperature above the drying chamber. When temperature sensor 142 detects that the temperature is below or above a suitable range, it transmits a corresponding signal to the controller. The controller then controls heater 141 to increase or decrease the temperature based on the received signal, ensuring that the temperature above the drying chamber is always consistent with the temperature on the stage 7, thus avoiding temperature differences and allowing the drying process to proceed more effectively.

[0054] A solution printing and drying method, comprising the following steps:

[0055] S1. Open the box cover 2, place the substrate 19 on the stage 7, and start printing. During or after printing, adjust the size of the gas flow area in the flow hole according to the size of the substrate 19, pull down or up the connecting plate 91, move the baffle 92 up and down, adjust the gas flow area to a suitable size, and close the box cover 2.

[0056] S2. The controller controls the heating wire to heat the stage 7 and the interior of the drying chamber. The temperature sensor 8 feeds back the temperature signal to the controller. The controller controls the heating wire to keep the temperature inside the drying chamber and the stage 7 at 40°C.

[0057] S3. After the temperature reaches the preset value, select the appropriate ink and printing parameters to start printing on the substrate 19. During or after printing, start the blower 3 and adjust the wind speed of the blower 3 to 3.5m / s so that the blower 3 blows gas into the drying chamber. The gas, combined with the temperature inside the drying chamber and the temperature on the stage 7, blows the film layer to dry it, resulting in a film layer with uniform thickness and low roughness.

[0058] S4. After printing is completed, turn off the inkjet printing system 15. After the film is dried, turn off the blower 3. Control the heating wire to turn off through the controller. Open the box cover 2 and remove the substrate 19 from the stage 7.

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

Claims

1. A solution printing and drying apparatus, characterized in that, The solution printing and drying equipment includes a drying chamber (1), which is equipped with a controller and a cover (2). A fixed frame (4) is provided inside the drying chamber (1). The inside of the fixed frame (4) is a drying chamber. The left, right and front sides of the fixed frame (4) are notches. Side plates (5) are connected to both sides of the fixed frame (4). A fixed slide rail (18) is provided between the side plates (5). An inkjet printing system (15) is provided on the fixed slide rail (18). The inkjet printing system (15) is externally equipped with... The inkjet printing system (15) has a housing, and the bottom of the inkjet printing system (15) is 0.1~100mm higher than the bottom of the housing to avoid the airflow during drying directly blowing on the inkjet printhead (17) and causing ink blockage of the inkjet printhead (17). The inkjet printing system (15) is equipped with a CCD camera (16), which is used to observe the ink droplet ejection state, substrate defects, and the quality of the printed film. The inkjet printing system (15) has multiple sets of inkjet printheads (17) inside, and the side plate (5) is equipped with... The array of flow holes, the fixed frame (4) is provided with an adjustment mechanism (9) for adjusting the size of the gas flow area in the flow holes, the top of the fixed frame (4) is connected to a ventilation plate (6), the top of the drying box (1) is equipped with a blower (3), the top of the ventilation plate (6) is provided with a round hole with the same as the air outlet of the blower (3), the ventilation plate (6) and the fixed frame (4) form an airflow channel, the inner side of the fixed frame (4) is provided with a stage (7) for supporting the substrate (19), the stage ( 7) The platform (7) is equipped with a heating wire electrically connected to the controller, and a temperature sensor (8) electrically connected to the controller is installed on the platform (7); the adjustment mechanism (9) includes a connecting plate (91) and a baffle (92). The baffle (92) has two pieces and is in contact with the two side plates (5) respectively. The top of the two baffles (92) is fixedly connected to the connecting plate (91). The connecting plate (91) is slidably connected to the fixed frame (4). The baffle (92) has flow holes corresponding to the side plates (5).

2. The solution printing and drying equipment as described in claim 1, characterized in that, It also includes a limiting mechanism (10), which includes a guide frame (101), a slide rod (102), a limiting rod (103) and a wedge rod (104). The guide frame (101) is horizontally connected to the side of the platform (7). The guide frame (101) is slidably provided with slide rods (102) on both sides. The top of the slide rods (102) is slidably provided with a limiting rod (103) that is horizontally arranged above the platform (7). The slide rods (102) on both sides are respectively connected to a wedge rod (104) that extends toward the side plate (5) that is close to them. The side plate (5) and the baffle (92) are both provided with vertical grooves that are interconnected. The wedge rod (104) passes through the two vertical grooves.

3. The solution printing and drying equipment as described in claim 2, characterized in that, It also includes a transmission mechanism (11), which includes an impeller (111), a rubber wheel (112), a partition (113), a sliding frame (114), a connecting frame (115), and an elastic element (116). The ventilation plate (6) is rotatably connected to both sides of the impeller (111), and the top of the fixed frame (4) is connected to both sides of the partition (113). The partitions (113) on both sides are located between the impellers (111) on both sides, and the top of the partition (113) is perpendicular to the ventilation plate (6). There is a flow gap. The end of the blade roller (111) is connected to a rubber wheel (112). The top two sides of the fixed frame (4) are slidably connected to sliding frames (114). The sliding frames (114) are in contact with the adjacent rubber wheels (112). The lower part of the limiting rod (103) is connected to a connecting frame (115). The connecting frame (115) is slidably engaged with the adjacent sliding frame (114). An elastic element (116) is connected between the slide rod (102) and the limiting rod (103).

4. The solution printing and drying equipment as described in claim 1, characterized in that, It also includes an air guiding mechanism (12), which includes an air guiding plate (121), a slide rail (122), a pusher (123) and an elastic element (124). On the side of the two side plates (5) that are close to each other, there are multiple air guiding plates (121) for limiting the direction of gas flow. On the side of the two side plates (5) that are close to each other, there is a slide rail (122). A pusher (123) for pushing the air guiding plate (121) to swing down is slidably through the slide rail (122). The pusher (123) is in contact with the air guiding plate (121). An elastic element (124) is connected between the air guiding plate (121) and the side plate (5).

5. The solution printing and drying equipment as described in claim 1, characterized in that, It also includes an ejection mechanism (13), which includes a top frame (131) and a handle (132). The top frame (131) for lifting the substrate (19) slides through the stage (7), and the bottom of the top frame (131) has a handle (132).

6. The solution printing and drying equipment as described in claim 1, characterized in that, It also includes a temperature control mechanism (14), which includes a heater (141) and a second temperature sensor (142). The heater (141) is installed at the top inside the fixed frame (4) for heating the top of the drying chamber. The second temperature sensor (142) is installed at the top inside the fixed frame (4) and is electrically connected to the controller.

7. A solution printing and drying method based on the solution printing and drying equipment of claim 1, characterized in that, The process includes the following steps: S1. Open the box cover (2), place the substrate (19) on the stage (7), and adjust the size of the gas flow area in the flow hole according to the size of the substrate (19) during or after printing. Pull the connecting plate (91) down or up to move the baffle (92) up and down to adjust the gas flow area to a suitable size, and close the box cover (2); S2. Control the heating wire to heat the stage (7) and the interior of the drying chamber through the controller. The temperature sensor (8) feeds back the temperature signal to the controller, and the controller controls the heating wire to keep the temperature in the drying chamber and the stage (7) within a suitable range; S3. After the temperature reaches the preset value, select the appropriate ink and printing parameters to start printing the substrate (19). During or after printing, start the blower (3) and adjust the wind speed of the blower (3) to a suitable range so that the blower (3) blows the gas into the drying chamber. The gas combines the temperature inside the drying chamber and the temperature on the stage (7) to blow the film layer, so that the film layer dries and a film layer with uniform thickness and low roughness is obtained. S4. After printing is completed, turn off the inkjet printing system (15), turn off the blower (3) after the film is dried, turn off the heating wire through the controller, open the box cover (2), and remove the substrate (19) on the stage (7).

8. The solution printing and drying method as described in claim 7, characterized in that, In S2, the temperature of the heating wire is precisely adjustable, with an adjustable range of 0-250°.

9. The solution printing and drying method as described in claim 8, characterized in that, In S3, the wind speed adjustment range of the hair dryer (3) is 0~100m / s.

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