Planar slit coating processing device

Abstract

The utility model discloses a plane type slit coating processing device which comprises a marble machine table, a marble coating platform, a coating die head, a driving assembly used for driving the coating die head to move horizontally and vertically, a pre-coating assembly used for pre-coating of the coating die head and a cleaning assembly used for cleaning of the coating die head. The marble coating platform, the pre-coating assembly and the cleaning assembly are all arranged on the marble machine table, and the pre-coating assembly is arranged between the cleaning assembly and the marble coating platform. And the coating die head can be movably arranged on the marble machine table above the marble coating platform, the pre-coating assembly and the cleaning assembly through the driving assembly. The planar slit coating processing device disclosed by the utility model can realize automation of pre-coating, coating and cleaning, and has the advantages of high precision, good stability, high efficiency and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to liquid spraying field, especially relate to a coating device. BACKGROUND

[0002] The plane type high-precision slit coating device is a coating technology that places a substrate on a platform, presses a solution into a coating die under uniform pressure, uniformly presses out through a narrow gap of the coating die, and synchronously and uniformly translates to uniformly coat the solution on the substrate.

[0003] The plane type slit coating processing device in the prior art mostly adopts a steel coating platform, and the coating platform is prone to deformation, resulting in poor coating precision. Meanwhile, the plane type slit coating processing device in the prior art is not provided with a pre-coating device and a cleaning device for the coating die, and manual pre-coating is required before coating and manual cleaning is required after coating, which is low in automation and greatly affects the coating processing efficiency. Therefore, it is of great significance to provide a plane type slit coating processing device with high coating processing precision and high coating processing efficiency. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies and defects mentioned in the background technology, and to provide a plane type slit coating processing device with high coating processing precision and high efficiency.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0006] A plane type slit coating processing device, comprising a marble machine table, a marble coating platform, a coating die, a driving assembly for driving the coating die to move horizontally and vertically, a pre-coating assembly for pre-coating the coating die, and a cleaning assembly for cleaning the coating die, wherein the marble coating platform, the pre-coating assembly, and the cleaning assembly are all arranged on the marble machine table, the pre-coating assembly is arranged between the cleaning assembly and the marble coating platform, and the coating die is arranged on the marble machine table and can move above the marble coating platform, the pre-coating assembly, and the cleaning assembly through the driving assembly.

[0007] In the above-mentioned planar slot coating processing device, preferably, the marble coating platform is provided on the marble machine table through a leveling assembly for keeping the marble coating platform horizontal, each side of the marble coating platform is provided with a centering assembly for automatic centering of the coated substrate, a needle pick-and-place assembly is provided below the marble coating platform for picking and placing the coated substrate, and a vacuum suction assembly is provided on the surface of the marble coating platform for fixing the coated substrate. By providing the leveling assembly, the marble coating platform can be kept horizontal, and four leveling assemblies can be provided above the marble machine table and below the four corners of the marble coating platform. The leveling assembly is a conventional precision leveling assembly in the prior art. For example, the precision leveling assembly is contacted by a lifting guide rod and an adjusting nut inclined surface, the adjusting nut is rotated to move the nut, and the nut moves to drive the lifting guide rail to move up and down slightly, so that the marble coating platform is leveled by the slight up-and-down movement of the four corner points of the fine adjustment platform. The centering assembly can keep the coated substrate placed on the marble coating platform in the center position, and the centering assembly can be provided on the four sides of the marble coating platform. The centering assembly is a conventional assembly in the prior art. For example, the centering assembly includes a cylinder and a stop lever, the coated substrate is placed on the marble coating platform, and the four cylinders drive the stop lever to push the coated substrate to the center position. By providing the leveling assembly and the centering assembly, the coating accuracy can be greatly improved. The needle pick-and-place assembly is used for feeding and discharging the coated substrate, and the vacuum suction assembly is used for suction and fixation of the coated substrate. When feeding is needed, a vacuum environment is provided, and when discharging is needed, the vacuum is broken, so that the coated substrate can be discharged through the needle pick-and-place assembly. The needle pick-and-place assembly and the vacuum suction assembly can be conventional devices in the prior art.

[0008] In the above-mentioned planar slot coating processing device, preferably, a displacement sensor assembly is provided on the side of the marble coating platform close to the pre-coating assembly for adjusting the position of the coating die to keep it at the same height position as the marble coating platform. The side of the marble coating platform is provided with a displacement sensor assembly, which can be used for automatic leveling of the coating die and zero calibration, so that the coating die and the marble coating platform are kept at the same height position. The assembly can also be a conventional device, such as two displacement sensors are provided on the side of the marble coating platform, the displacement sensors are calibrated to the zero point of the coplanar position of the marble platform through a calibration block, and then the coating die is moved to contact the two displacement sensors through a vertical linear guide rail driving mechanism before coating, and the displacement sensors detect the levelness of the coating die and automatically move up and down to the zero point position of the displacement sensor, thereby completing the automatic leveling and automatic zero return of the coating die.

[0009] In the planar slot coating processing device, preferably, the driving assembly comprises a gantry column, horizontal linear guide driving mechanisms arranged on both sides of the marble platform, and vertical linear guide driving mechanisms arranged on both sides of the gantry column. The coating die is arranged on the gantry column through the vertical linear guide driving mechanisms, and the gantry column is arranged on the marble platform through the horizontal linear guide driving mechanisms. The horizontal linear guide driving mechanisms and the vertical linear guide driving mechanisms can drive the coating die to move in the horizontal direction and the vertical direction respectively, so as to adjust the horizontal position and the vertical position of the coating die. The gantry column can support and improve the structural stability and the coating precision.

[0010] In the planar slot coating processing device, preferably, the gantry column is provided with a foreign matter sensor for detecting whether there is foreign matter on the coating substrate on the marble coating platform and a laser sensor for detecting the flatness of the coating substrate placed on the marble coating platform. The gantry column crossbeam is provided with foreign matter sensors at both ends for detecting whether there is foreign matter on the coating substrate before coating. The middle of the gantry column crossbeam is provided with a laser sensor for detecting the flatness of the coating substrate placed on the marble coating platform. The above detection process is to detect while coating. When foreign matter or uneven coating substrate is detected, the coating work is stopped, the coating die automatically returns to the starting position, and the coating substrate is automatically replaced for coating.

[0011] In the planar slot coating processing device, preferably, the horizontal linear guide driving mechanism comprises a horizontal guide rail, a horizontal driving motor and a horizontal driving connecting plate. One side of the horizontal driving connecting plate is connected with the horizontal driving motor, and the other side is slidably arranged on the horizontal guide rail. The gantry column is arranged on the horizontal driving connecting plate, and the marble platform is further provided with a grating ruler parallel to the horizontal guide rail. The vertical linear guide driving mechanism comprises a vertical guide rail, a servo motor, a screw rod and a vertical connecting plate. The vertical connecting plate is slidably arranged on the vertical guide rail and connected with the screw rod. The screw rod is connected with the servo motor, and the coating die is arranged on the vertical connecting plate. The horizontal guide rail, the horizontal driving motor and the grating ruler can ensure uniform coating when the coating die moves, and avoid vibration to cause poor precision. The vertical guide rail, the servo motor and the screw rod are used for automatic alignment and leveling of the coating die, automatic lifting of the coating gap, pre-coating gap and cleaning station height.

[0012] In the above-mentioned planar slot coating processing device, preferably, the pre-coating assembly comprises a pre-coating roller, and a pre-coating driving assembly is connected to the pre-coating roller to drive the rotation of the pre-coating roller. A pre-coating roller is arranged above the middle of the marble machine for pre-coating treatment of the substrate by the coating die before coating. The pre-coating driving assembly can drive the pre-coating roller to rotate to achieve pre-coating. The structure of the above-mentioned pre-coating driving assembly is not limited, for example, a motor drives the pre-coating roller to rotate below the coating die.

[0013] In the above-mentioned planar slot coating processing device, preferably, the cleaning assembly comprises a soaking device and a spray cleaning device, the spray cleaning device is arranged above the soaking device, the spray cleaning device is movably arranged on a cleaning fixed plate by a cleaning driving assembly, the spray cleaning device comprises a spray cleaning tank, and a spray head is arranged in the spray cleaning tank. After coating is completed, the coating die is moved to a position directly above the soaking device by a horizontal linear guide rail driving mechanism, and then the coating die is moved into the spray cleaning tank by a vertical linear guide rail driving mechanism, the spray cleaning device is driven to reciprocate along the length direction of the coating die by the cleaning driving assembly (such as a motor driving a belt) to perform spray cleaning, and the spray head sprays water during the spray cleaning process. When the coating work is stopped, the coating die can be moved into the soaking device for soaking cleaning according to needs.

[0014] In the above-mentioned planar slot coating processing device, preferably, a dosing pump for coating liquid supply is connected to the coating die, and a liquid supply system is connected to the dosing pump. The liquid supply system and the dosing pump are used to provide coating liquid to the coating die.

[0015] In the above-mentioned planar slot coating processing device, preferably, a lower machine frame is arranged below the marble machine, the marble machine is arranged on the lower machine frame by an air float damping assembly, and a closed outer frame is further arranged on the marble machine, and an air purification system is arranged on the closed outer frame. The lower machine frame serves as a support structure for the overall stability, air float damping assemblies are embedded in the four corners above the lower machine frame to isolate external transmitted vibrations and reduce the vibrations generated by the overall device, thereby ensuring the precision and stability of the equipment. The specific structure of the above-mentioned air float damping assembly is not limited and can adopt conventional devices in the prior art. The closed outer frame can play an isolation role, and the air purification system can purify the harmful gases volatilized during the coating process.

[0016] The utility model discloses a planar slit coating processing device, by the overall stability support of lower frame, the air float shock attenuation component is inlaid in four corners of lower frame top, the vibration of outside transmission and the vibration of reducing self overall device are isolated, thereby guaranteeing the precision and stability of equipment, the marble machine platform is equipped with air float shock attenuation component top, and the marble machine platform is not easy to produce the deformation after fine machining compared with other material structures, is favorable to improving the processing precision height, the automatic centering assembly of precision leveling is equipped with in the middle of machine platform top, and the pin automatic lifting of taking places coating base material to marble coating platform, the displacement sensor assembly is equipped with in the side of marble coating platform, is used for coating die head automatic leveling and zero return calibration use, high precision linear guide rail, high precision linear motor drive and high precision grating ruler are equipped with on the both sides of marble machine platform top, are used for coating die head walking and even coating, can walk to pre-coating work station and cleaning work station, both sides linear guide rail top all are equipped with gantry stand, and both sides of gantry stand all are equipped with high precision guide rail, high precision screw rod and servo motor drive, are used for coating die head automatic alignment leveling, automatic lifting coating gap, pre-coating gap and cleaning work station height lifting, the front -treatment pre-coating roller is equipped with in the middle of marble machine platform top, is used for coating base material coating by coating die head automatic pre-coating treatment on pre-coating roller, the foreign matter sensor is equipped with in the both ends of gantry stand crossbeam, is used for detecting whether coating base material has foreign matter before coating, the laser sensor is equipped with in the middle of gantry stand crossbeam, is used for detecting the flatness of coating base material placed on coating platform.

[0017] The planar slit coating processing device of the utility model, specific coating method can be as follows:

[0018] The pin of marble coating platform rises, the coating base material is placed on the pin of marble coating platform by manipulator (or artificial), the coating base material is placed on the marble coating platform by the pin descending, the coating base material is positioned in the center by the automatic centering assembly, and the coating base material is adsorbed by the vacuum adsorption assembly, in this process, the coating die head is lifted to the pre-coating roller by horizontal linear guide rail drive mechanism and vertical linear guide rail drive mechanism, and the solution is pre-coated by starting the quantitative pump; The coating die head enters the starting position of coating base material after pre-coating, and the height position is adjusted by the displacement sensor assembly, and the coating is carried out by starting the quantitative pump and horizontal linear guide rail drive mechanism translation; The front end of coating die head is provided with foreign matter sensor and laser sensor for detecting foreign matter and flatness when coating walking; The coating die head returns to the pre-coating standby position after coating, and the coating base material is lifted by the pin of marble coating platform, and is taken away by manipulator (or artificial), and is circulated in turn. According to the use condition, the coating die head is automatically moved to the cleaning component for spray cleaning according to the use condition, and the coating die head can be automatically moved to the soaking device of the cleaning component for soaking cleaning in the process of not using the device.

[0019] Compared with the prior art, the marble machine table is not prone to deformation after finishing, has high machining precision, and the driving assembly can drive the coating die head to move on the marble coating platform, the pre-coating assembly and the cleaning assembly, so that the automation of pre-coating, coating and cleaning can be realized, and the device has the advantages of high precision, good stability and high efficiency.

[0020] The plane type slit coating processing device of the utility model, including marble machine table, marble coating platform, coating die head, drive assembly, pre-coating assembly and cleaning assembly, marble machine table is not prone to deformation after finishing compared with other material structures, high machining precision, through drive assembly can drive coating die head on marble coating platform, pre-coating assembly and cleaning assembly move, can realize the automation of pre-coating, coating, cleaning, with high precision, good stability, high efficiency and other advantages. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0022] Figure 1 It is the overall structure schematic view of the plane type slit coating processing device of the embodiment.

[0023] Figure 2 It is the structure schematic view of the marble machine table of the plane type slit coating processing device of the embodiment.

[0024] Figure 3 It is the structure schematic view of the marble machine table and the marble coating platform of the embodiment.

[0025] Figure 4 It is the structure schematic view of the marble coating platform of the embodiment.

[0026] Figure 5 It is the structure schematic view of the horizontal linear guide rail driving mechanism of the embodiment.

[0027] Figure 6 It is the structure schematic view of the vertical linear guide rail driving mechanism of the embodiment.

[0028] Figure 7 It is the structure schematic view of the pre-coating assembly of the embodiment.

[0029] Figure 8 It is the structure schematic view of the cleaning assembly of the embodiment.

[0030] Figure 9 It is Figure 8 It is the local enlarged view of A in the embodiment.

[0031] LEGEND

[0032] 1, marble machine table; 2, marble coating platform; 3, coating die head; 4, pre-coating assembly; 401, pre-coating roller; 402, pre-coating driving assembly; 5, cleaning assembly; 501, soaking device; 502, spray cleaning device; 5021, spray cleaning tank body; 5022, spray head; 503, cleaning driving assembly; 504, cleaning fixed plate; 6, leveling assembly; 7, centering assembly; 8, pin pick-and-place assembly; 9, vacuum adsorption assembly; 10, displacement sensor assembly; 11, gantry column; 12, horizontal linear guide rail driving mechanism; 1201, horizontal guide rail; 1202, horizontal driving motor; 1203, horizontal driving connecting plate; 1204, grating ruler; 13, vertical linear guide rail driving mechanism; 1301, vertical guide rail; 1302, servo motor; 1303, screw rod; 1304, vertical connecting plate; 14, foreign matter sensor; 15, laser sensor; 16, quantitative pump; 17, liquid supply system; 18, lower rack; 19, air floating damping assembly; 20, closed outer frame; 21, air purification system. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the following will be combined with the description, drawings and preferred embodiments to make a more comprehensive and detailed description of the present application, but the protection scope of the present application is not limited to the following specific embodiments.

[0034] It should be particularly noted that when an element is described as being "fixed to, connected to, or communicated with" another element, it can be directly fixed, connected or communicated with the other element, or indirectly fixed, connected or communicated with the other element through other intermediate connecting elements.

[0035] Unless otherwise defined, all the professional terms used in the following are the same as those commonly understood by those skilled in the art. The professional terms used in this paper are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present application.

[0036] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or can be prepared by existing methods.

[0037] Embodiment:

[0038] As Figures 1-3As shown in the figure, the planar slot coating processing device of the embodiment includes a marble machine table 1, a marble coating platform 2, a coating die head 3, a driving assembly for driving the coating die head 3 to move horizontally and vertically, a pre-coating assembly 4 for pre-coating the coating die head 3, and a cleaning assembly 5 for cleaning the coating die head 3. The marble coating platform 2, the pre-coating assembly 4 and the cleaning assembly 5 are all arranged on the marble machine table 1. The pre-coating assembly 4 is arranged between the cleaning assembly 5 and the marble coating platform 2. The coating die head 3 is arranged on the marble machine table 1 and can move above the marble coating platform 2, the pre-coating assembly 4 and the cleaning assembly 5 through the driving assembly.

[0039] As shown in the figure, Figure 4 In the embodiment, the marble coating platform 2 is arranged on the marble machine table 1 through a leveling assembly 6 for keeping the marble coating platform 2 horizontal. Each side surface of the marble coating platform 2 is provided with a centering assembly 7 for automatic centering of the coating substrate. A thimble taking and placing assembly 8 is arranged below the marble coating platform 2 for taking and placing the coating substrate. A vacuum suction assembly 9 is arranged on the surface of the marble coating platform 2 for fixing the coating substrate. Specifically, the leveling assembly 6 is arranged at each corner point of the marble coating platform 2. The centering assembly 7 is arranged on each side surface of the marble coating platform 2. The leveling assembly 6, the centering assembly 7, the thimble taking and placing assembly 8 and the vacuum suction assembly 9 can all be conventional devices.

[0040] As shown in the figure, Figure 4 In the embodiment, a displacement sensor assembly 10 is arranged on one side of the marble coating platform 2 close to the pre-coating assembly 4 for adjusting the position of the coating die head 3 to keep it at the same height position as the marble coating platform 2. Two displacement sensor assemblies 10 are arranged in the embodiment. The displacement sensor assembly 10 can be a conventional device.

[0041] As shown in the figure, Figure 5 , Figure 6 In the embodiment, the driving assembly includes a gantry column 11, horizontal linear guide rail driving mechanisms 12 arranged on both sides of the marble machine table 1, and vertical linear guide rail driving mechanisms 13 arranged on both sides of the gantry column 11. The two sides of the coating die head 3 are arranged on the gantry column 11 through the vertical linear guide rail driving mechanisms 13. The gantry column 11 is arranged on the marble machine table 1 through the horizontal linear guide rail driving mechanisms 12.

[0042] As shown in the figure, Figure 2As shown, in the embodiment, the gantry column 11 is provided with a foreign matter sensor 14 for detecting whether there is foreign matter on the coated substrate on the marble coating platform 2 and a laser sensor 15 for detecting the flatness of the coated substrate placed on the marble coating platform 2 on the side close to the marble coating platform 2. The foreign matter sensor 14 and the laser sensor 15 can detect whether there is foreign matter or whether it is kept flat during the coating process, which is beneficial to improve the coating precision. The foreign matter sensor 14 and the laser sensor 15 can be conventional devices.

[0043] In the embodiment, the horizontal linear guide rail driving mechanism 12 includes a horizontal guide rail 1201, a horizontal driving motor 1202, and a horizontal driving connecting plate 1203. One side of the horizontal driving connecting plate 1203 is connected with the horizontal driving motor 1202, and the other side is slidingly arranged on the horizontal guide rail 1201. The gantry column 11 is arranged on the horizontal driving connecting plate 1203. The marble machine platform 1 is further provided with a grating ruler 1204 parallel to the horizontal guide rail 1201. The vertical linear guide rail driving mechanism 13 includes a vertical guide rail 1301, a servo motor 1302, a screw rod 1303, and a vertical connecting plate 1304. The vertical connecting plate 1304 is slidingly arranged on the vertical guide rail 1301 and connected with the screw rod 1303. The screw rod 1303 is connected with the servo motor 1302. The coating die head 3 is arranged on the vertical connecting plate 1304.

[0044] As shown in the drawings, Figure 7 In the embodiment, the pre-coating assembly 4 includes a pre-coating roller 401. The pre-coating roller 401 is connected with a pre-coating driving assembly 402 for driving the pre-coating roller 401 to rotate. The pre-coating driving assembly 402 can be a motor-driven belt mode.

[0045] As shown in the drawings, Figure 8 , Figure 9 In the embodiment, the cleaning assembly 5 includes a soaking device 501 and a spray cleaning device 502. The spray cleaning device 502 is arranged above the soaking device 501. The spray cleaning device 502 is movably arranged on a cleaning fixed plate 504 through a cleaning driving assembly 503. The spray cleaning device 502 includes a spray cleaning tank body 5021. The spray cleaning tank body 5021 is provided with a spray head 5022. The cleaning driving assembly 503 can be a motor-driven belt mode. When the coating die head 3 needs to be cleaned, the cleaning is realized through the spray cleaning device 502. When the coating die head 3 is not used for a long time, it can be placed in the soaking device 501.

[0046] As shown in the drawings, Figure 1 , Figure 6 In the embodiment, the coating die head 3 is connected with a constant pump 16 for coating liquid supply. The constant pump 16 is connected with a liquid supply system 17.

[0047] As shown in the drawings, Figure 1 , Figure 2As shown, in the embodiment, a lower rack 18 is arranged below the marble platform 1, the marble platform 1 is arranged on the lower rack 18 through an air float damping assembly 19, and the marble platform 1 is further covered with a closed outer frame 20, and the closed outer frame 20 is provided with an air purification system 21. The air float damping assembly 19 is arranged at four corner points below the marble platform 1.

[0048] The planar slit coating processing device of the embodiment, and the specific coating method can be as follows:

[0049] The top pin of the marble coating platform 2 is raised, the coating substrate is placed on the top pin of the marble coating platform 2 by the manipulator (or manually), the coating substrate is placed flat on the marble coating platform 2 by lowering the top pin, the coating substrate is positioned and centered by the automatic centering assembly 7, and the coating substrate is adsorbed by the vacuum adsorption assembly 9. At the same time, the coating die head 3 is lifted to the pre-coating roller 401 by the horizontal linear guide rail driving mechanism 12 and the vertical linear guide rail driving mechanism 13, and the quantitative pump 16 is started to press out the solution for pre-coating. After pre-coating, the coating die head 3 enters the starting position of the coating substrate, the height position is adjusted by the displacement sensor assembly 10, the quantitative pump 16 is started, and the horizontal linear guide rail driving mechanism 12 is translated for coating. The foreign matter sensor 14 and the laser sensor 15 are arranged at the front end of the coating die head 3 to detect foreign matter and flatness during coating. After coating, the coating die head 3 returns to the pre-coating standby position, the top pin of the marble coating platform 2 lifts the coating substrate, and the coating substrate is taken away by the manipulator (or manually), and the process is repeated in sequence. According to the use condition, the coating die head 3 is automatically set to enter the cleaning assembly 5 for spray cleaning, and during the non-use of the device, the coating die head 3 can be automatically set to move to the soaking device 501 of the cleaning assembly 5 for soaking cleaning.

[0050] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A planar slot coating processing device, characterized in that, The marble machine table (1), the marble coating platform (2), the coating die (3), the driving assembly for driving the horizontal and vertical movement of the coating die (3), the pre-coating assembly (4) for the coating die (3) and the cleaning assembly (5) for the coating die (3), the marble coating platform (2), the pre-coating assembly (4) and the cleaning assembly (5) are all arranged on the marble machine table (1), the pre-coating assembly (4) is arranged between the cleaning assembly (5) and the marble coating platform (2), and the coating die (3) is arranged on the marble machine table (1) and can move above the marble coating platform (2), the pre-coating assembly (4) and the cleaning assembly (5) through the driving assembly.

2. The in-line slit coating apparatus according to claim 1, wherein The marble coating platform (2) is arranged on the marble machine table (1) by a leveling assembly (6) for keeping the marble coating platform (2) horizontal, each side of the marble coating platform (2) is provided with a centering assembly (7) for automatic centering of the coating substrate, and a thimble taking and placing assembly (8) for taking and placing the coating substrate is arranged below the marble coating platform (2), and a vacuum adsorption assembly (9) for fixing the coating substrate is arranged on the surface of the marble coating platform (2).

3. The in-line slit coating apparatus according to claim 1, wherein The side of the marble coating platform (2) close to the pre-coating assembly (4) is provided with a displacement sensor assembly (10) for adjusting the position of the coating die (3) to keep it at the same height position as the marble coating platform (2).

4. The in-line slit coating apparatus according to claim 1, wherein The driving assembly includes a gantry column (11), a horizontal linear guide driving mechanism (12) arranged on both sides of the marble machine table (1) and a vertical linear guide driving mechanism (13) arranged on both sides of the gantry column (11), and the two sides of the coating die (3) are arranged on the gantry column (11) through the vertical linear guide driving mechanism (13), and the gantry column (11) is arranged on the marble machine table (1) through the horizontal linear guide driving mechanism (12).

5. The planar slot coating processing apparatus according to claim 4, wherein The gantry column (11) is provided with a foreign matter sensor (14) for detecting whether there is foreign matter on the coating substrate on the marble coating platform (2) and a laser sensor (15) for detecting the flatness of the coating substrate placed on the marble coating platform (2) on the side close to the marble coating platform (2).

6. The in-line slit coating process apparatus according to claim 4, wherein The horizontal linear guide rail driving mechanism (12) comprises a horizontal guide rail (1201), a horizontal driving motor (1202) and a horizontal driving connecting plate (1203), one side of the horizontal driving connecting plate (1203) is connected with the horizontal driving motor (1202), the other side is slidably arranged on the horizontal guide rail (1201), the gantry stand (11) is arranged on the horizontal driving connecting plate (1203), and the marble machine table (1) is further provided with a grating ruler (1204) parallel to the horizontal guide rail (1201); the vertical linear guide rail driving mechanism (13) comprises a vertical guide rail (1301), a servo motor (1302), a screw rod (1303) and a vertical connecting plate (1304), the vertical connecting plate (1304) is slidably arranged on the vertical guide rail (1301) and connected with the screw rod (1303), the screw rod (1303) is connected with the servo motor (1302), and the coating die (3) is arranged on the vertical connecting plate (1304).

7. The in-line slit coater apparatus of claim 1, wherein The pre-coating assembly (4) comprises a pre-coating roller (401), and a pre-coating driving assembly (402) for driving the pre-coating roller (401) to rotate is connected to the pre-coating roller (401).

8. The in-line slit coater apparatus of claim 1, wherein, The cleaning assembly (5) comprises a soaking device (501) and a spray cleaning device (502), the spray cleaning device (502) is arranged above the soaking device (501), the spray cleaning device (502) is movably arranged on a cleaning fixed plate (504) through a cleaning driving assembly (503), and the spray cleaning device (502) comprises a spray cleaning tank body (5021), and a spray head (5022) is arranged in the spray cleaning tank body (5021).

9. The in-line slit coating process apparatus according to any one of claims 1 to 8, characterized in that, The coating die (3) is connected with a constant volume pump (16) for coating liquid supply, and the constant volume pump (16) is connected with a liquid supply system (17).

10. The in-line slit coating process apparatus according to any one of claims 1 to 8, characterized in that, A lower machine frame (18) is arranged below the marble machine table (1), the marble machine table (1) is arranged on the lower machine frame (18) through an air float damping assembly (19), and a closed outer frame (20) is further arranged on the marble machine table (1), and an air purification system (21) is arranged on the closed outer frame (20).

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