Drying system for alignment film printing plate

Abstract

The invention discloses a drying system for an alignment film printing plate. The drying system comprises a crown block conveying system, a heating system and an air draft system. The crown block conveying system is erected at the tops of the hanging plate inspection chamber and the drying chamber and is used for transferring a printing plate between the hanging plate inspection chamber and the drying chamber; the interior of the drying chamber is divided into a heat supply area and a heating area, the heating system provides hot air for the heat supply area, the heat supply area conveys the hot air to the heating area and provides the hot air for printing plate surface drying, and the air draft system is installed at the top of the drying chamber and used for exhausting waste gas and regulating and controlling the indoor temperature. According to the drying system, through partition design and multi-system cooperation, pollution-free transfer and accurate drying of the printing plates are achieved, residual reagents of the printing plates are effectively removed, meanwhile, the environmental influence caused by direct exhaust gas emission is avoided, and the environmental protection property and stability of the drying procedure are improved.

Description

Technical Field

[0001] This invention relates to the field of drying alignment film printing plates. More specifically, this invention relates to a drying system for alignment film printing plates. Background Technology

[0002] Alignment film printing refers to printing on glass substrates using a PI printing press, where ink (PI liquid) is transferred to a flexible photosensitive resin plate via an anilox roller. It is a type of letterpress printing, also known as flexographic printing. In alignment film printing, after laser engraving, chemical cleaning, and plate inspection, the printing plate needs to be dried with hot air to remove residual chemicals and ensure the quality of subsequent printing. Currently, there are several problems to be solved in the drying process of alignment film printing plates, such as: cumbersome and space-consuming plate transfer methods. Existing technologies mostly use plate-mounting trolleys to transfer printing plates. To ensure the stability of the printing plates during movement, the trolley base needs to be widened and weighted, occupying an area of ​​1.8×4m, while the drying chamber space is usually 4×5m. The trolley significantly reduces the drying space, resulting in only two G8.6 plates being dried at a time, leading to low drying efficiency. Furthermore, the transfer process requires 2-3 people to push the trolley, resulting in high labor costs, and improper operation during pushing can easily cause the printing plate to shake, affecting the integrity of the plate surface. Moreover, the drying heating uniformity is poor, affecting the drying quality. The existing hot air blower in the drying room is directly exposed, and the hot air diffusion is not guided in any direction, resulting in higher temperatures at higher points in the drying space and uneven temperature distribution. Summary of the Invention

[0003] To achieve these objectives and other advantages according to the invention, a preferred embodiment provides a drying system for alignment film printing plates, comprising an overhead crane conveying system, a heating system, and an exhaust system; the overhead crane conveying system is mounted on the top of a plate inspection chamber and a drying chamber for transferring the printing plates between the two chambers; the drying chamber is internally divided into a heating zone and a cooling zone, the heating system provides hot air to the heating zone, and the heating zone supplies hot air to the cooling zone to provide hot air for drying the printing plate surface; the exhaust system is installed on the top of the drying chamber for exhausting waste gas and regulating the indoor temperature.

[0004] Preferably, the overhead crane conveying system includes a slide rail, an overhead crane, and a plate clamp; the slide rail is in several sets and interconnected, the slide rail is fixed to the ceiling frame, and each set of slide rails is equipped with a slider; the slider is welded and fixed to the overhead crane, and the overhead crane slides along the slide rail via the slider; the overhead crane and the plate clamp are detachably connected by bolts, and the plate clamp is used to fix the printing plate.

[0005] Preferably, the bottom of the drying chamber is provided with a closed heating area, and the heating system is connected to the heating area through a pipe to provide hot air to the heating area. The inner wall of the heating area is lined with heat insulation cotton. The rest of the drying chamber, excluding the heating area, is a heating area. The bottom of the heating area is lined with heat insulation cotton. Several heating walls are arranged at intervals in the heating area. The heating walls are hollow inside and are connected to the interior of the heating area to form a hot air delivery channel. The heater has ventilation holes.

[0006] Preferably, the heating wall has several strip grooves on the side near the printing plate, and several ventilation holes are opened on the strip grooves. The hot air stored in the heating area is accurately delivered to the printing plate surface in the heating area through the strip grooves, so as to realize the functional coordination between the heating area and the heating zone.

[0007] Preferably, the heating system includes a hot air blower, which is installed in a compartment on one side of the drying chamber. The other side of the compartment is the factory return air wall. The air outlet pipe of the hot air blower passes through the partition wall between the compartment and the drying chamber and extends into the heating area to continuously provide hot air to the heating area.

[0008] Preferably, the exhaust system includes an exhaust duct, the air inlet of which is connected to the heating area of ​​the drying chamber, and the temperature inside the drying chamber is controlled by adjusting the exhaust volume.

[0009] Preferably, the strip grooves of the heating wall are evenly distributed along the height direction of the heating wall, so that the hot air delivered from the heating area to the heating area evenly covers the printing plate surface.

[0010] Preferably, the ventilation holes in the strip groove are distributed in a matrix along the length of the strip groove, and the diameter of the ventilation holes gradually decreases as they move away from the heating area; a guide plate is provided at the opening of the strip groove, and the guide plate is inclined at an angle of 30°-45° with the groove wall, extending towards the printing plate side.

[0011] Preferably, each row of ventilation holes along the width of the printing plate is divided into a central area ventilation hole group located in the middle and an edge area ventilation hole group located on both sides. The central area ventilation hole group is set in the central area of ​​the printing plate, and its arrangement spacing along the length of the strip groove is 8-12mm. The edge area ventilation hole group is set in the edge transition area of ​​the printing plate, and its arrangement spacing along the length of the strip groove is 15-18mm. Moreover, the minimum hole diameter of the central area ventilation hole group is greater than the minimum hole diameter of the edge area ventilation hole group.

[0012] Preferably, a transition ventilation hole group is provided between the central area ventilation hole group and the edge area ventilation hole group. The spacing of the transition ventilation hole group decreases linearly from 18mm to 12mm along the direction closer to the central area ventilation hole group, and its hole diameter increases linearly from the minimum hole diameter of the edge area ventilation hole group to the minimum hole diameter of the central area ventilation hole group along the direction closer to the central area ventilation hole group. The ventilation hole axis of the transition ventilation hole group is inclined at 5°-8° to the length direction of the strip groove, guiding the hot air to be blown obliquely to the transition part between the central area and the edge area, avoiding airflow discontinuity between the central area and the edge area, and realizing a smooth transition of hot air flux.

[0013] The present invention has at least the following beneficial effects: the drying system of the present invention achieves pollution-free transfer and precise drying of printing plates through partition design and multi-system collaboration, effectively removes residual agents from printing plates, and avoids the environmental impact caused by direct emission of waste gas, thereby improving the environmental friendliness and stability of the drying process.

[0014] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the arrangement of steel strands in the reinforcing steel structure in this invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0017] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0018] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] like Figure 1 As shown, a preferred embodiment of the present invention provides a drying system for alignment film printing plates, including an overhead crane conveying system 1, a heating system 2, and an exhaust system 3; the overhead crane conveying system 1 is mounted on the top of the plate inspection chamber and the drying chamber 4, and is used to realize the transfer of the printing plate 5 between the plate inspection chamber and the drying chamber 4; the drying chamber 4 is divided into a heating zone 4-1 and a heating zone 4-2, the heating system 2 provides hot air to the heating zone 4-1, and the heating zone 4-1 supplies hot air to the heating zone 4-2 to provide hot air for drying the printing plate 5; the exhaust system 3 is installed on the top of the drying chamber 4 to exhaust waste gas and regulate the indoor temperature.

[0021] During operation, the alignment film printing plate 5 to be dried is first visually inspected in the plate inspection chamber to confirm that there are no scratches or stains on the plate surface. Then, the printing plate 5 is fixed in place by the clamps of the overhead crane conveyor system 1. The overhead crane conveyor system 1 is started, driving the printing plate 5 to be transferred along the track from the plate inspection chamber to the preset station in the heating area 4-2 of the drying chamber 4. During the transfer, the printing plate 5 is kept vertically suspended to avoid contact between the plate surface and other structures. Then, the inlet and outlet of the drying chamber 4 are closed, and the heating system 2 is started. The hot air generated by the heating system 2 is delivered to the heating area 4-1 through pipes. After being buffered in the heating area 4-1, the hot air is evenly diffused into the heating area 4-2 to heat and dry the surface of the printing plate 5 suspended in the heating area 4-2. During the drying process, residual reagents on printing plate 5 form waste gas. The exhaust system 3 is activated, and the exhaust fan generates negative pressure, drawing the waste gas in heating zone 4-2 out through the exhaust pipe and sending it to the subsequent waste gas treatment device. At the same time, the exhaust volume is changed by adjusting the operating power of the exhaust fan. When the temperature in drying chamber 4 is higher than the preset value, the exhaust volume is increased to introduce ambient air to lower the indoor temperature. When the temperature is lower than the preset value, the exhaust volume is decreased to maintain the indoor hot air concentration to increase the temperature.

[0022] Furthermore, according to one embodiment of the present invention, preferably, the overhead crane conveying system 1 includes a slide rail 1-1, an overhead crane 1-2, and a plate clamp 1-3; the slide rail 1-1 is in several groups and interconnected, the slide rail 1-1 is fixed to the ceiling frame, and each group of slide rail 1-1 is equipped with a slider; the slider is welded and fixed to the overhead crane 1-2, and the overhead crane 1-2 slides along the slide rail 1-1 via the slider; the overhead crane 1-2 and the plate clamp 1-3 are detachably connected by bolts, and the plate clamp 1-3 is used to fix the printing plate 5.

[0023] The slide rails 1-1 consist of four interconnected sets. The connection points between two sets of slide rails 1-1 feature a rounded transition design to prevent the slider from jamming during sliding. After the printing plate 5 is fixed, the drive motor of the overhead crane 1-2 is started. The power of the drive motor is reduced in speed by a reducer and then transmitted to the traveling wheels. The traveling wheels drive the slider to slide along the slide rails 1-1, thereby driving the overhead crane 1-2, along with the plate clamp 1-3 and the printing plate 5, to move together. When the printing plate 5 is transferred to the transition track between the plate inspection chamber and the drying chamber 4, the drive motor adjusts its direction, allowing the overhead crane 1-2 to smoothly enter the slide rail 1-1 at the top of the drying chamber 4, ultimately transferring the printing plate 5 to the preset drying position in the heating area 4-2.

[0024] Furthermore, according to one embodiment of the present invention, preferably, the bottom of the drying chamber 4 is provided with a closed heating area 4-1, the heating system 2 is connected to the heating area 4-1 through a pipe to provide hot air to the heating area 4-1, and the inner wall of the heating area 4-1 is lined with heat insulation cotton; the remaining part of the drying chamber 4 other than the heating area 4-1 is the heating area 4-2, the bottom of the heating area 4-2 is lined with heat insulation cotton, and a plurality of heating walls 8 are arranged at intervals in the heating area 4-2. The heating walls 8 are hollow inside and communicate with the interior of the heating area 4-1 to form a hot air delivery channel; and the heater has ventilation holes.

[0025] In the above implementation scheme, the hot air generated by the heating system 2 is delivered into the heating zone 4-1 through a conveying pipe. Since the heating zone 4-1 is a closed structure, the hot air gradually accumulates within the zone, forming a stable pressure environment. The insulation cotton on the inner wall of the heating zone 4-1 effectively reduces heat exchange between the hot air and the external environment, maintaining the temperature stability of the hot air. Subsequently, the hot air in the heating zone 4-1, under pressure, enters the hollow area inside the heating wall 8, which is connected to it, i.e., the hot air conveying channel. During the flow of the hot air in the hot air conveying channel, some of the hot air diffuses through the ventilation holes on the surface of the heating wall 8 into the heating zone 4-2, heating and drying the alignment film printing plate 5 suspended in the heating zone 4-2. The insulation cotton at the bottom of the heating zone 4-2 prevents heat loss from the heating zone 4-1 to the outside of the drying chamber 4, ensuring that the heat is concentrated on the heating zone 4-2. The heating walls 8 are evenly distributed, allowing the hot air to diffuse from multiple directions to all corners of the heating zone 4-2, avoiding heating dead zones.

[0026] Furthermore, according to one embodiment of the present invention, preferably, the heating wall 8 has a plurality of strip-shaped grooves on the side near the printing plate 5, and a plurality of ventilation holes are formed on the strip-shaped grooves. The hot air stored in the heating zone 4-1 is precisely delivered to the printing plate 5 in the heating zone 4-2 through the strip-shaped grooves, realizing the functional synergy between the heating zone 4-1 and the heating zone 4-2. The guiding effect of the strip-shaped grooves can achieve precise delivery, enabling the hot air to be blown directionally to the printing plate 5, avoiding irregular diffusion of the hot air; the edges of the groove openings are chamfered with a chamfer radius of 5mm to avoid sharp edges interfering with the airflow.

[0027] In this technical solution, hot air in heating zone 4-1 enters the hot air delivery channel of heating wall 8 under pressure, and then enters each strip groove through the internal connection structure of heating wall 8 and ventilation holes. Since the strip grooves are long, narrow grooves, the hot air entering the grooves converges within the grooves and is evenly distributed along the length of the grooves. It is then directionally blown through the ventilation holes at the bottom of the grooves to the surface of the alignment film printing plate 5 in heating zone 4-2. Because the extension direction of the strip grooves is parallel to the width direction of the printing plate 5 and evenly covers the height range of the printing plate 5, the hot air can be evenly blown along the width direction of the printing plate 5, ensuring that all parts of the printing plate 5 receive a uniform supply of hot air. At the same time, the guiding effect of the strip grooves reduces the diffusion loss of hot air, allowing most of the hot air to directly act on the surface of the printing plate 5, improving the utilization efficiency of the hot air. This implementation scheme achieves precise guidance and uniform distribution of hot air through the setting of strip grooves, so that the hot air storage function of heating zone 4-1 and the drying function of heating zone 4-2 can form a highly efficient synergy, effectively improving the uniformity of heating of the printing plate 5.

[0028] Furthermore, according to one embodiment of the present invention, preferably, the heating system 2 includes a hot air blower, which is disposed in a compartment 6 on one side of the drying chamber 4, and the other side of the compartment 6 is a factory return air wall 7. The air outlet pipe of the hot air blower passes through the partition wall between the compartment 6 and the drying chamber 4 and extends into the heating area 4-1 to continuously provide hot air to the heating area 4-1.

[0029] During operation, the hot air blower is started. It draws ambient temperature air from the factory through the inlet and flexible hose from the return air vent of the return air wall 7. The air is heated by the electric heating element inside the blower to form hot air at the preset temperature. Under the pressure of the blower, the hot air enters the outlet duct and is delivered to the heating zone 4-1 of the drying chamber 4. A diffuser at the end of the outlet duct allows the hot air to spread rapidly within the heating zone 4-1, preventing uneven temperature caused by localized hot air accumulation. The partition 6 isolates the hot air blower from the production area, reducing the impact of noise and vibration generated by the blower on the drying operation. The return air design of the factory's return air wall 7 enables air recycling, reducing the heating load on the blower and saving energy compared to directly drawing in outside cold air. During continuous drying operations, the hot air blower runs continuously, providing hot air to the heating zone 4-1 and ensuring that the hot air pressure and temperature within the heating zone 4-1 remain within the preset range.

[0030] Furthermore, according to one embodiment of the present invention, preferably, the exhaust system 3 includes an exhaust pipe, the air inlet of which is connected to the heating zone 4-2 of the drying chamber 4, and the temperature inside the drying chamber 4 is controlled by adjusting the exhaust volume.

[0031] During the drying process, the temperature in heating zone 4-2 is monitored in real time by a temperature sensor. When the detected temperature is higher than the preset drying temperature (e.g., 80℃), the PLC controller increases the opening of the regulating valve or increases the operating power of the exhaust fan to increase the airflow and accelerate the exhaust of hot air from heating zone 4-2. Simultaneously, ambient air from outside enters heating zone 4-2 through gaps in the drying chamber 4 or reserved ventilation openings, thus lowering the temperature. When the detected temperature is lower than the preset temperature, the controller decreases the opening of the regulating valve or reduces the operating power of the exhaust fan to decrease the airflow and reduce the loss of hot air, allowing the temperature in heating zone 4-2 to gradually rise to the preset range. The filter at the air inlet filters dust from the air, preventing dust from entering the pipes and exhaust fan, thus extending the equipment's service life. This implementation achieves precise temperature control within the drying chamber 4 through the coordination of the exhaust pipe and the regulating mechanism, while effectively exhausting the waste gas generated during the drying process. This ensures the stability of the drying quality and avoids the impact of waste gas on the working environment and personnel health.

[0032] Furthermore, according to one embodiment of the present invention, preferably, the strip grooves 9 of the heating wall 8 are evenly distributed along the height direction of the heating wall 8 and are horizontally arranged, so that the hot air supplied from the heating zone 4-1 to the heating zone 4-2 evenly covers the surface of the printing plate 5. Since the spacing between adjacent strip grooves is consistent and the hot air flow rate output from each strip groove is the same, the hot air forms a continuous and uniform airflow coverage layer in the height direction of the printing plate 5, and the upper, middle, and lower regions of the printing plate 5 can obtain the same hot air supply and heating temperature. This avoids the problem of insufficient heating at the top or bottom of the printing plate 5, or overheating in the middle, caused by uneven distribution of the strip grooves.

[0033] Furthermore, according to one embodiment of the present invention, preferably, the ventilation holes in the strip groove are distributed in a matrix along the length of the strip groove, and the diameter of the ventilation holes gradually decreases in the direction away from the heating area 4-1; a guide plate is provided at the opening of the strip groove, and the guide plate is inclined at an angle of 30°-45° with the groove wall of the strip groove, and the guide plate extends toward the printing plate 5.

[0034] Hot air from heating zone 4-1 enters the hot air delivery channel of heating wall 8 and flows to different locations within the strip groove. Due to pressure loss during delivery, the pressure of the hot air on the side furthest from heating zone 4-1 is slightly lower than on the side closest. By setting the orifice diameter of the ventilation holes on the side furthest from heating zone 4-1 to a smaller size, the local wind speed can be increased by reducing the flow cross-sectional area, compensating for the pressure loss and ensuring consistent airflow from the ventilation holes at different locations within the strip groove. After being discharged through the ventilation holes, the hot air acts on the guide vanes at the opening of the strip groove. Under the guidance of the guide vanes, the direction of the hot air outlet changes from vertical to an angled direction towards the printing plate 5, allowing the hot air to act more directly on the surface of the printing plate 5 and reducing heat diffusion loss. Simultaneously, the matrix-distributed ventilation holes ensure uniform distribution of hot air across the width of the strip groove, further improving the uniformity of hot air coverage. This embodiment compensates for the pressure loss of hot air delivery through a gradually changing aperture design and achieves precise guidance of hot air through an air guide plate. The combination of the two enables the hot air to act more evenly and efficiently on the printing plate 5, further improving the stability and uniformity of the drying effect.

[0035] Furthermore, according to one embodiment of the present invention, preferably, each row of ventilation holes along the width direction of the printing plate is divided into a central area ventilation hole group located in the middle and an edge area ventilation hole group located on both sides. The central area ventilation hole group is arranged in the central area of ​​the printing plate 5, and its arrangement spacing along the length direction of the strip groove is 8-12mm. The edge area ventilation hole group is arranged in the edge transition area of ​​the printing plate 5, and its arrangement spacing along the length direction of the strip groove is 15-18mm. Moreover, the minimum hole diameter of the central area ventilation hole group is greater than the minimum hole diameter of the edge area ventilation hole group.

[0036] Hot air is blown onto the central and edge transition areas of printing plate 5 through ventilation hole groups in the central and edge areas, respectively. Since the central area is the main working area with a large residual agent area and high requirements for drying uniformity, a smaller spacing between the ventilation holes ensures denser hot air coverage and consistent evaporation rates of the residual agent across the area. The edge transition area has a smaller residual agent area and dissipates heat faster than the central area; a larger spacing between the ventilation holes appropriately reduces the hot air supply, resulting in more synchronized drying. Simultaneously, the minimum aperture of the ventilation hole group in the central area is larger than that in the edge area, causing a slightly higher hot air flow rate in the central area to match the heat dissipation difference. This differentiated ventilation hole design ensures that the central and edge areas of printing plate 5 receive hot air tailored to their specific characteristics, avoiding inconsistent drying effects caused by differences in regional characteristics.

[0037] It should be noted that the aperture zoning design in this embodiment does not conflict with the aforementioned aperture gradient design. They represent different dimensions of layered optimization and work synergistically: the aperture of the aforementioned ventilation holes gradually decreases along the direction away from the heating area, representing a longitudinal optimization along the hot air delivery path inside the heating wall. This aims to compensate for pressure loss during hot air delivery and ensure uniform airflow across the same row of ventilation holes. In contrast, the aperture difference in this embodiment involves lateral zoning optimization along the width of the printing plate, aiming to match the different heat dissipation characteristics of different areas of the printing plate. Specifically, whether it's the ventilation hole group in the central area or the ventilation hole group in the edge area, the single row of ventilation holes within each group follows the same design, with the aperture gradually decreasing along the direction away from the heating area. However, the overall minimum aperture of the central area ventilation hole group is larger than that of the edge area ventilation hole group. This layered design, combining longitudinal gradient within the same row with lateral differences between different rows, solves two different problems: pressure attenuation and uneven heat dissipation, creating a synergistic effect and ensuring uniform hot air supply across the entire printing plate.

[0038] Furthermore, according to one embodiment of the present invention, preferably, a transition ventilation hole group is provided between the central region ventilation hole group and the edge region ventilation hole group. The spacing of the transition ventilation hole group decreases linearly from 18 mm to 12 mm along the direction closer to the central region ventilation hole group, and its hole diameter increases linearly from the minimum hole diameter of the edge region ventilation hole group to the minimum hole diameter of the central region ventilation hole group along the direction closer to the central region ventilation hole group. The ventilation hole axis of the transition ventilation hole group is inclined at 5°-8° to the length direction of the strip groove, guiding the hot air to be blown obliquely to the transition part between the central region and the edge region, avoiding airflow discontinuity between the central region and the edge region, and realizing a smooth transition of hot air flux.

[0039] In the above implementation scheme, the transition ventilation hole group outputs hot air synchronously with the central and edge ventilation hole groups. Because the spacing and diameter of the transition ventilation hole group change linearly, the output hot air flow rate also transitions linearly from a smaller value in the edge region to a larger value in the central region, avoiding abrupt changes in hot air flow rate at the junction of the two ventilation hole groups. Simultaneously, the ventilation hole axis of the transition ventilation hole group is set at a 6° angle, guiding the hot air obliquely towards the transition area between the central and edge regions, allowing the transition area to receive direct hot air supply from the transition ventilation hole group and filling any potentially weak airflow areas. This design allows for seamless connection of the hot air flow between the central, transition, and edge regions, forming a continuous and uniform airflow coverage layer, avoiding airflow discontinuities, further improving the integrity and uniformity of the hot air coverage on printing plate 5, ensuring that the drying effect of the transition area on printing plate 5 is consistent with that of the central and edge areas, and comprehensively improving the quality stability of the dried product.

[0040] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A drying system for alignment film printing plates, characterized in that, The system includes an overhead crane conveyor system, a heating system, and an exhaust system. The overhead crane conveyor system is installed on the top of the plate inspection room and the drying room to facilitate the transfer of printing plates between the two rooms. The drying room is divided into a heating zone and a heat supply zone. The heating system provides hot air to the heating zone, and the heating zone supplies hot air to the heat supply zone to dry the printing plates. The exhaust system is installed on the top of the drying room to exhaust waste gas and regulate the indoor temperature.

2. The drying system for alignment film printing plates according to claim 1, characterized in that, The overhead crane conveying system includes slide rails, an overhead crane, and a plate clamp; there are several sets of slide rails that are interconnected, and the slide rails are fixed to the ceiling frame. Each set of slide rails is equipped with a slider; the slider is welded and fixed to the overhead crane, and the overhead crane slides along the slide rail via the slider; the overhead crane and the plate clamp are detachably connected by bolts, and the plate clamp is used to fix the printing plate.

3. The drying system for alignment film printing plates according to claim 1, characterized in that, The bottom of the drying chamber is provided with a closed heating area. The heating system is connected to the heating area through pipes to provide hot air to the heating area. The inner wall of the heating area is lined with heat insulation cotton. The rest of the drying chamber, excluding the heating area, is the heating area. The bottom of the heating area is lined with heat insulation cotton. Several heating walls are set at intervals in the heating area. The heating walls are hollow inside and are connected to the interior of the heating area to form a hot air delivery channel. The heater has ventilation holes.

4. The drying system for alignment film printing plates according to claim 3, characterized in that, The heating wall has several strip grooves on the side closest to the printing plate, and several ventilation holes are opened on the strip grooves. The hot air stored in the heating area is accurately delivered to the printing plate in the heating area through the strip grooves, so as to realize the functional coordination between the heating area and the heating zone.

5. The drying system for alignment film printing plates according to claim 3, characterized in that, The heating system includes a hot air blower, which is installed in a compartment on one side of the drying chamber. The other side of the compartment is the factory return air wall. The air outlet pipe of the hot air blower passes through the partition wall between the compartment and the drying chamber and extends into the heating area to continuously provide hot air to the heating area.

6. The drying system for alignment film printing plates according to claim 1, characterized in that, The ventilation system includes a ventilation duct, the air inlet of which is connected to the heating area of ​​the drying chamber, and the temperature inside the drying chamber is controlled by adjusting the ventilation volume.

7. The drying system for alignment film printing plates according to claim 3, characterized in that, The strip grooves of the heating wall are evenly distributed along the height of the heating wall, so that the hot air delivered from the heating area to the heating area can evenly cover the printing plate surface.

8. The drying system for alignment film printing plates according to claim 4, characterized in that, The ventilation holes in the strip groove are distributed in a matrix along the length of the strip groove, and the diameter of the ventilation holes gradually decreases as they move away from the heating area; a guide plate is provided at the opening of the strip groove, and the guide plate is inclined at an angle of 30°-45° to the groove wall, extending towards the printing plate side.

9. The drying system for alignment film printing plates according to claim 8, characterized in that, Each row of ventilation holes along the width of the printing plate is divided into a central area ventilation hole group located in the middle and an edge area ventilation hole group located on both sides. The central area ventilation hole group is set in the central area of ​​the printing plate, and its arrangement spacing along the length of the strip groove is 8-12mm. The edge area ventilation hole group is set in the edge transition area of ​​the printing plate, and its arrangement spacing along the length of the strip groove is 15-18mm. Moreover, the minimum hole diameter of the central area ventilation hole group is larger than the minimum hole diameter of the edge area ventilation hole group.

10. The drying system for alignment film printing plates according to claim 9, characterized in that, A transition ventilation hole group is provided between the ventilation hole group in the central area and the ventilation hole group in the edge area. The spacing of the transition ventilation hole group decreases linearly from 18mm to 12mm along the direction closer to the ventilation hole group in the central area, and its hole diameter increases linearly from the smallest hole diameter of the ventilation hole group in the edge area to the smallest hole diameter of the ventilation hole group in the central area along the direction closer to the ventilation hole group in the central area. The ventilation hole axis of the transition ventilation hole group is inclined at 5°-8° to the length direction of the strip groove, guiding the hot air to be blown obliquely to the transition part between the central area and the edge area, avoiding airflow discontinuity between the central area and the edge area, and realizing a smooth transition of hot air flux.

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