Plate cleaning device and cleaning method thereof

Abstract

The invention discloses a plate cleaning device and a cleaning method thereof.The plate cleaning device comprises a cleaning mechanism and a vacuum pressure tank, the cleaning mechanism comprises a spray head unit used for spraying a chemical reagent to a plate and a brushing unit used for brushing the chemical reagent sprayed to the surface of the plate to the edge of the plate, and the brushing unit is located behind the spray head unit; the spray head unit comprises an upper atomization spray head and a lower atomization spray head which are located above and below the plate respectively, the upper atomization spray head and the lower atomization spray head are both connected with the vacuum pressure tank, and the vacuum pressure tank is used for providing chemical reagents for the upper atomization spray head and the lower atomization spray head and applying stable pressure to the upper atomization spray head and the lower atomization spray head; the brushing unit comprises an upper side brush and a lower side brush which are located above and below the plate correspondingly, and the upper side brush and the lower side brush can make contact with the surface of the plate. According to the cleaning device and the cleaning method, the application efficiency and the uniformity of the chemical reagent of the plate are improved, the waste of the chemical reagent is reduced, and the negative influence on the environment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plate processing, and in particular to a plate cleaning device and a cleaning method thereof. Background Art

[0002] Edge banding machine is a kind of equipment used to attach edge banding strips to the edge of the board, which is widely used in furniture manufacturing and woodworking industries. Before edge banding, the board needs to be sprayed with a separator to prevent the overflowing hot melt adhesive from bonding with the board. After edge banding, a cleaner needs to be sprayed to remove the residual glue and separator during edge banding. Therefore, in the edge banding process, separators and cleaners play a vital role.

[0003] At present, the common method of applying chemical reagents on boards is to use manual spraying. However, traditional spraying devices have some problems and limitations, such as uneven spraying, excessive waste of chemical reagents, and possible environmental pollution. The unevenness of manual spraying during the application of chemical reagents may cause excessive amounts in some areas and insufficient amounts in other areas, affecting the quality and aesthetics of the edge banding. In addition, a large amount of manpower and material resources are required to manually clean the final board to meet the product's shipping appearance standards, increasing manufacturing costs and placing a burden on the environment. Summary of the invention

[0004] In view of the above defects in the prior art, one of the present inventions provides a plate cleaning device to improve the application efficiency and uniformity of chemical reagents, reduce the waste of chemical reagents, and reduce the negative impact on the environment.

[0005] One of the present invention is implemented by the following technical solution:

[0006] A plate cleaning device comprises a cleaning mechanism and a vacuum pressure tank, wherein the cleaning mechanism comprises a nozzle unit for spraying chemical reagents onto the plate and a brushing unit for brushing the chemical reagents sprayed on the surface of the plate to the edge of the plate, wherein the brushing unit is located at the rear of the nozzle unit, and the nozzle unit comprises an upper atomizing nozzle and a lower atomizing nozzle respectively located above and below the plate, wherein the upper atomizing nozzle and the lower atomizing nozzle are both connected to the vacuum pressure tank, wherein the vacuum pressure tank is used to provide chemical reagents to the upper atomizing nozzle and the lower atomizing nozzle and to apply stable pressure to the two, and wherein the brushing unit comprises an upper brush and a lower brush respectively located above and below the plate, and wherein the upper brush and the lower brush can contact the surface of the plate.

[0007] Furthermore, the cleaning mechanism also includes a control electrical box, and the upper atomizing nozzle and the lower atomizing nozzle are electrically connected to the control electrical box.

[0008] Furthermore, it also includes a travel switch and a delay unit, the travel switch is used to detect the induction signal of the plate passing and send the induction signal to the control electrical box, the delay unit sets a delay value according to the position of the travel switch to the position of the nozzle unit, the control electrical box receives the induction signal and controls the nozzle unit to spray chemical reagents according to the delay value.

[0009] Furthermore, the upper brush and the lower brush are both wool felt brush strips, and each wool felt brush strip is a non-powered brush strip.

[0010] Furthermore, the upper brush and the lower brush are both provided with elastic components, so that the upper brush and the lower brush are in elastic contact with the surface of the plate.

[0011] Furthermore, the atomization radius of the upper atomization nozzle and the lower atomization nozzle are both adjustable.

[0012] Furthermore, the vacuum pressure tank includes at least two liquid outlets, an air inlet and a pressure valve interface, at least two of the liquid outlets are respectively connected to the upper atomizing nozzle and the lower atomizing nozzle through the first air pipe, the air inlet is connected to the air source through the second air pipe, the pressure valve interface is installed with a pressure regulating valve, and each first air pipe is installed with a liquid flow meter and a one-way valve.

[0013] Furthermore, it also includes lifting mechanisms respectively arranged above and below the plate, each lifting mechanism includes a beam arranged along the moving direction of the plate, a lifting rod arranged on the beam and a driving mechanism for driving the lifting rod to lift and lower, and a fixed plate is provided at one end of the lifting rod close to the plate, the fixed plate of the upper lifting mechanism is installed with an upper atomizing nozzle and an upper side brush, and the fixed plate of the lower lifting mechanism is installed with a lower atomizing nozzle and a lower side brush.

[0014] Furthermore, it also includes a polishing wheel unit, which is used to clean the chemical reagents on the surface of the plate after the plate is painted.

[0015] The second aspect of the present invention provides a plate cleaning method to ensure that the entire edge of the plate can be evenly infiltrated with chemical reagents and achieve the purpose of high utilization of chemical reagents. At the same time, the width of chemical reagent infiltration is guaranteed, avoiding problems such as plate surface contamination caused by sputtering.

[0016] The second aspect of the present invention is implemented by the following technical solution:

[0017] A plate cleaning method, comprising the plate cleaning device described above, the cleaning method is as follows:

[0018] The delay value is preset according to the distance from the position of the travel switch to the position of the nozzle unit;

[0019] Set the spraying parameters of the sprinkler unit, including the duration of each spraying and the interval between spraying;

[0020] The travel switch detects the induction signal of the end of the plate passing by, and according to the preset delay value, the control box controls the nozzle unit to start spraying, and the nozzle unit sprays the chemical reagent on the surface of the plate according to the set spraying parameters;

[0021] After the spray head unit reaches the spraying time, it moves to the brushing unit, which evenly brushes the chemical reagent sprayed on the board surface to the edge of the board;

[0022] After the chemical reagents are applied, the plate passes through a polishing wheel unit to remove the chemical reagents remaining on the surface of the plate.

[0023] Compared with the prior art, the beneficial effects of the present invention include at least:

[0024] (1) The cleaning device of the present invention first sprays the chemical reagent onto the surface of the plate in an atomized manner by the nozzle unit, so that the surface of the plate is evenly covered with the chemical reagent, and then the chemical reagent sprayed on the surface of the plate is brushed onto the edge of the plate by the brush unit at the rear, ensuring that the edge of the plate can be evenly infiltrated with the chemical reagent and achieving the purpose of high utilization rate of the chemical reagent. At the same time, the brush unit ensures the width of the chemical reagent infiltration, improves the application efficiency and uniformity of the chemical reagent of the edge banding machine, reduces the waste of chemical reagents, and reduces the negative impact on the environment. No manpower investment is required, and the degree of automation is improved.

[0025] (2) The present invention can realize uniform and accurate coating of chemical reagents on the surface of the plate through the cleaning method of the nozzle unit and the brush unit coordinated with the setting of the delay value and the spraying parameters, which greatly saves the use of chemical reagents and solves the problem of over-spraying in traditional manual spraying, which wastes a large amount of chemical reagents, increases manufacturing costs and burdens the environment. At the same time, it can easily control the width of the chemical reagent infiltration, and solves the problem of wide spraying range in traditional spraying, in which the excessively wide part cannot be cleaned away by the polishing wheel of the edge banding machine, resulting in oil residue on the surface and affecting the appearance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is one of the schematic diagrams of a plate cleaning device according to an embodiment of the present invention;

[0027] Figure 2 This is a second schematic diagram of a plate cleaning device according to an embodiment of the present invention;

[0028] In the figure: 1. Plate; 2. Upper atomizing nozzle; 3. Lower atomizing nozzle; 4. Upper side brush; 5. Lower side brush; 6. Control electric box; 7. Crossbeam; 8. Lifting rod; 9. Fixed plate. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0030] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0031] like Figure 1 and Figure 2 As shown, a plate cleaning device provided by the present invention includes a cleaning mechanism and a vacuum pressure tank, wherein the cleaning mechanism includes a nozzle unit for spraying chemical reagents onto the plate 1 and a brushing unit for brushing the chemical reagents sprayed on the surface of the plate 1 to the edge of the plate 1, wherein the brushing unit is located at the rear position of the nozzle unit, and the nozzle unit includes an upper atomizing nozzle 2 and a lower atomizing nozzle 3 respectively located above and below the plate 1, wherein the upper atomizing nozzle 2 and the lower atomizing nozzle 3 are both connected to the vacuum pressure tank, wherein the vacuum pressure tank is used to provide chemical reagents to the upper atomizing nozzle 2 and the lower atomizing nozzle 3 and apply stable pressure to the two, and the brushing unit includes an upper brush 4 and a lower brush 5 respectively located above and below the plate 1, and the upper brush 4 and the lower brush 5 can contact the surface of the plate 1.

[0032] In this embodiment, the plate 1 is carried and conveyed by a conveying mechanism, which may be a conveyor belt. Therefore, the speed of the plate 1 can be controlled by setting the conveying speed of the conveyor belt. The direction of movement of the plate 1 is as follows: Figure 1As shown by the arrow, the brushing unit is located at the rear of the spray head unit, that is, the plate 1 first passes through the spray head unit and then passes through the brushing unit; the upper atomizing spray head 2 and the lower atomizing spray head 3 are respectively arranged above and below the plate 1, and chemical reagents can be sprayed on the upper surface and the lower surface of the plate 1 at the same time. The upper atomizing spray head 2 and the lower atomizing spray head 3 are provided with chemical reagents by a vacuum pressure tank, and the vacuum pressure tank can apply stable pressure to the upper atomizing spray head 2 and the lower atomizing spray head 3 to ensure that the upper atomizing spray head 2 and the lower atomizing spray head 3 will not have empty spraying phenomenon. The upper brush 4 and the lower brush 5 are respectively arranged above and below the plate 1, and the chemical reagents sprayed on the upper surface and the lower surface of the plate 1 can be brushed to the edge of the plate 1 at the same time, thereby improving the brushing efficiency. The chemical reagents sprayed to the end of the plate surface are evenly brushed to the entire edge of the plate 1 by the upper brush 4 and the lower brush 5, so that the chemical reagents can be evenly and accurately applied to the plate surface, thereby saving the use of chemical reagents and improving the edge sealing effect. The present invention first sprays the chemical reagent onto the surface of the plate 1 in an atomized manner by the nozzle unit, so that the surface of the plate 1 can be evenly covered with the chemical reagent, and then the chemical reagent sprayed on the surface of the plate 1 is brushed onto the edge of the plate 1 by the rear brushing unit, ensuring that the entire edge of the plate 1 can be evenly infiltrated with the chemical reagent and achieving the purpose of high utilization rate of the chemical reagent. At the same time, the brushing unit ensures the width of the chemical reagent infiltration, avoids problems such as plate surface pollution caused by sputtering, improves the application efficiency and uniformity of the chemical reagent of the edge banding machine, reduces the waste of chemical reagents, and reduces the negative impact on the environment. No manpower investment is required, and the degree of automation is improved.

[0033] As a preferred embodiment, the cleaning mechanism further includes a control electrical box 6 , and the upper atomizing nozzle 2 and the lower atomizing nozzle 3 are both electrically connected to the control electrical box 6 .

[0034] In this embodiment, by setting the control electric box 6, the duration of each spraying of the upper atomizing nozzle 2 and the lower atomizing nozzle 3 and the interval time of the spraying can be set, that is, every time the plate 1 passes a certain distance, the control electric box 6 will start the corresponding atomizing nozzle to spray, that is, the point spraying function, so that the entire edge of the plate 1 can be evenly infiltrated with the chemical reagent, and the purpose of high utilization rate of the chemical reagent is achieved. Among them, the duration of each spraying of the atomizing nozzle is determined according to the continuous wetting condition of the actual chemical reagent after brushing.

[0035] As a preferred embodiment, it also includes a travel switch and a delay unit, the travel switch is used to detect the induction signal of the plate 1 passing through and send the induction signal to the control electrical box 6, the delay unit sets a delay value according to the position of the travel switch to the position of the nozzle unit, the control electrical box 6 receives the induction signal and controls the nozzle unit to spray chemical reagents according to the delay value.

[0036] In this embodiment, when the travel switch senses that the plate 1 passes through, the delay value pre-set by the delay unit accurately determines the delay time for the plate 1 to reach the position of the nozzle unit. At this time, the control box 6 controls the nozzle unit to start, so that the nozzle unit sprays on time; specifically, the upper atomizing nozzle 2 and the lower atomizing nozzle 3 of this embodiment spray the plate 1 for 0.5S (at this time, the plate 1 stops moving). After the spraying is completed, the conveying mechanism continues to convey the plate 1 forward. When the plate 1 passes through the brushing unit, the upper brush 4 and the lower brush 5 evenly brush the chemical reagent sprayed to the end of the plate surface to the edge of the plate 1. It can be understood that, under normal circumstances, the chemical reagent sprayed within 0.5S is only enough to soak a certain length of the plate 1. Therefore, when encountering a longer plate 1, every time a certain distance is passed, the control box 6 will control the nozzle unit to start spraying, that is, the point spraying function, and so on, to ensure that the entire edge of the plate 1 can be evenly soaked with the chemical reagent, and to achieve the purpose of high utilization of the chemical reagent.

[0037] As a preferred embodiment, the upper brush 4 and the lower brush 5 are both wool felt brush strips, and each wool felt brush strip is a non-powered brush strip. In this embodiment, the wool felt brush strip is made of thin, straight and soft wool, the hair is slender and neat, the bristles are loose, and the chemical liquid is easy to volatilize and not easy to harden. At the same time, the wool felt brush strip as a brushing structure is also environmentally friendly and durable. The upper brush 4 and the lower brush 5 are both non-powered brush strips, and no power device is required to implement the brushing work. During the transportation process of the plate 1, the plate 1 is brushed as it moves forward, saving costs.

[0038] As a preferred embodiment, the upper brush 4 and the lower brush 5 are both provided with elastic components, so that the upper brush 4 and the lower brush 5 are in elastic contact with the surface of the plate 1 .

[0039] In this embodiment, elastic components are provided on both the upper brush 4 and the lower brush 5 so that the brushes will not exert too much pressure on the board surface and brush the liquid out of the board, thereby avoiding waste of chemical reagents.

[0040] As a preferred embodiment, the atomization radius of the upper atomizing nozzle 2 and the lower atomizing nozzle 3 are adjustable. By adjusting the atomization radius of the upper atomizing nozzle 2 and the lower atomizing nozzle 3, it is convenient to adjust and form atomization spaces of different ranges to adapt to plates 1 of different widths, with strong flexibility.

[0041] As a preferred embodiment, the vacuum pressure tank includes at least two liquid outlets, an air inlet and a pressure valve interface, at least two of the liquid outlets are respectively connected to the upper atomizing nozzle 2 and the lower atomizing nozzle 3 through a first air pipe, the air inlet is connected to the air source through a second air pipe, the pressure valve interface is installed with a pressure regulating valve, and each first air pipe is installed with a liquid flow meter and a one-way valve.

[0042] In this embodiment, the upper atomizing nozzle 2 and the lower atomizing nozzle 3 are connected to the corresponding liquid outlet through the first air pipe, wherein the first air pipe is preferably made of PTFE material, which has high chemical stability and excellent chemical corrosion resistance, such as resistance to strong acids, strong alkalis, strong oxidants, etc., and has outstanding heat resistance, cold resistance and wear resistance. A one-way valve is arranged on the first air pipe to ensure that the liquid in the pipe will not flow back and delay the spraying effect of the nozzle; a liquid flow meter is arranged on the first air pipe to monitor the liquid flow and realize quantitative spraying; the air inlet is connected to an external air source through the second air pipe to provide pressure to the vacuum pressure tank. At the same time, by setting a pressure regulating valve, on the one hand, the size of the liquid output from the vacuum pressure tank can be controlled to avoid excessive pressure causing excessive infiltration to produce liquid dripping and corroding the device; on the other hand, the amount of liquid applied to the plate 1 can also be controlled to avoid the problem of waste of chemical reagents and excessive oil printing on the plate surface.

[0043] As a preferred embodiment, it also includes lifting mechanisms respectively arranged above and below the plate 1, each lifting mechanism includes a beam 7 arranged along the moving direction of the plate 1, a lifting rod 8 arranged on the beam 7 and a driving mechanism for driving the lifting rod 8 to lift and lower, and a fixed plate 9 is provided at one end of the lifting rod 8 close to the plate 1, and the fixed plate 9 of the upper lifting mechanism is installed with an upper atomizing nozzle 2 and an upper brush 4, and the fixed plate 9 of the lower lifting mechanism is installed with a lower atomizing nozzle 3 and a lower brush 5.

[0044] In this embodiment, in order to adapt to the cleaning of panels of different thicknesses, the nozzle unit and the brush unit are lifted and lowered by a lifting mechanism, and specifically, the driving mechanism drives the lifting rod 8 to move up and down in the vertical direction to change the height of the nozzle unit and the brush unit to the panel surface, so as to adapt to panels of different thicknesses. Preferably, the driving mechanism can be a pneumatic cylinder or an oil cylinder.

[0045] As a preferred embodiment, a polishing wheel unit is also included, and the polishing wheel unit is used to remove the chemical reagent on the surface of the plate 1 after the plate 1 is painted. Through the polishing action of the polishing wheel unit, the glue and other stains on the surface of the plate 1 can be cleaned, ensuring the cleanliness of the surface of the plate 1 and eliminating the subsequent manual cleaning process.

[0046] The present invention also provides a plate cleaning method, comprising the plate cleaning device described above, and the cleaning method is as follows:

[0047] Set the delay value according to the distance from the position of the travel switch to the position of the sprinkler unit;

[0048] Set the spraying parameters of the sprinkler unit, including the spraying duration of each sprinkler unit and the spraying time interval of the sprinkler unit;

[0049] The travel switch detects the induction signal of the end of the plate 1 passing through, and sends the induction signal to the control box 6. The control box 6 controls the spray head unit to start spraying according to the preset delay value. The spray head unit sprays the chemical reagent on the surface of the plate 1 according to the set spraying parameters;

[0050] After the spray head unit reaches the spraying time of each time, it moves to the brushing unit, and the brushing unit evenly brushes the chemical reagent sprayed on the board surface to the edge of the board 1;

[0051] After the chemical reagent is applied, the plate 1 passes through a polishing wheel unit to remove the chemical reagent remaining on the surface of the plate 1.

[0052] In the present invention, the plate 1 is conveyed by a conveyor belt, and a delay value is set according to the conveying speed of the conveyor belt and the distance from the position of the travel switch to the position of the nozzle unit. The travel switch detects the induction signal passing through the end of the plate 1, and the control box 6 receives the induction signal to start timing. When the pre-set delay value is reached, the control box 6 controls the nozzle unit to start spraying chemical reagents, thereby realizing spraying of chemical reagents from the end of the plate 1. The upper atomizing nozzle 2 and the lower atomizing nozzle 3 of the nozzle unit spray the plate 1 according to the set spraying parameters. After each spraying time is reached, the plate 1 moves to the brushing unit, and the upper brush 4 and the lower brush 5 of the brushing unit brush the chemical reagents sprayed on the surface of the plate 1 to the edge of the plate 1. Then, the brushing effect of the chemical reagents on the surface of the plate 1 and the wetting of the plate surface are observed, and then the above operation is repeated for the plate 1 according to the set spraying interval time and each spraying time until the entire edge of the plate 1 is evenly coated with the chemical reagents.

[0053] The cleaning method of the present invention realizes uniform and accurate coating of chemical reagents on the entire edge of the plate 1 by cooperating with the nozzle unit and the brush unit in combination with the setting of the travel switch, the delay value, and the spraying parameters, thereby greatly saving the use of chemical reagents and solving the problems of over-spraying in traditional manual spraying, wasting a large amount of chemical reagents, increasing manufacturing costs and burdening the environment. At the same time, through the setting of the brush unit, the width of the chemical reagent infiltration can be easily controlled, solving the problem of a wide spraying range in traditional spraying, in which the excessively wide part cannot be cleaned away by the polishing wheel of the edge banding machine, resulting in oil residue on the surface and affecting the appearance of the product.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A plate cleaning device, characterized in that , comprising a cleaning mechanism and a vacuum pressure tank, the cleaning mechanism comprising a nozzle unit for spraying chemical reagents onto a plate (1) and a brushing unit for brushing the chemical reagents sprayed on the surface of the plate (1) to the edge of the plate (1), the brushing unit being located at the rear of the nozzle unit, the nozzle unit comprising an upper atomizing nozzle (2) and a lower atomizing nozzle (3) respectively located above and below the plate (1), the upper atomizing nozzle (2) and the lower atomizing nozzle (3) being connected to the vacuum pressure tank, the vacuum pressure tank being used to provide chemical reagents to the upper atomizing nozzle (2) and the lower atomizing nozzle (3) and applying a stable pressure to the two, the brushing unit comprising an upper brush (4) and a lower brush (5) respectively located above and below the plate (1), and the upper brush (4) and the lower brush (5) being able to contact the surface of the plate (1).

2. The plate cleaning device according to claim 1, characterized in that: The cleaning mechanism further comprises a control electrical box (6), and the upper atomizing nozzle (2) and the lower atomizing nozzle (3) are both electrically connected to the control electrical box (6).

3. The plate cleaning device according to claim 2, characterized in that: It also includes a travel switch and a delay unit, wherein the travel switch is used to detect an induction signal of a plate (1) passing through and send the induction signal to a control electrical box (6), and the delay unit sets a delay value according to the position of the travel switch to the position of the nozzle unit, and the control electrical box (6) receives the induction signal and controls the nozzle unit to spray chemical reagents according to the delay value.

4. The plate cleaning device according to claim 1, characterized in that: The upper brush (4) and the lower brush (5) are both wool felt brush strips, and each wool felt brush strip is a non-powered brush strip.

5. The plate cleaning device according to claim 1, characterized in that: The upper brush (4) and the lower brush (5) are both provided with elastic components, so that the upper brush (4) and the lower brush (5) are in elastic contact with the surface of the plate (1).

6. The plate cleaning device according to claim 1, characterized in that: The atomization radii of the upper atomization nozzle (2) and the lower atomization nozzle (3) are both adjustable.

7. The plate cleaning device according to claim 1, characterized in that: The vacuum pressure tank comprises at least two liquid outlets, an air inlet and a pressure valve interface, wherein at least two of the liquid outlets are respectively connected to an upper atomizing nozzle (2) and a lower atomizing nozzle (3) via a first air pipe, the air inlet is connected to an air source via a second air pipe, a pressure regulating valve is installed on the pressure valve interface, and a liquid flow meter and a one-way valve are installed on each of the first air pipes.

8. The plate cleaning device according to claim 1, characterized in that: The invention also comprises lifting mechanisms respectively arranged above and below the plate (1), each lifting mechanism comprising a crossbeam (7) arranged along the moving direction of the plate (1), a lifting rod (8) arranged on the crossbeam (7), and a driving mechanism for driving the lifting rod (8) to move up and down, a fixing plate (9) being arranged at one end of the lifting rod (8) close to the plate (1), an upper atomizing nozzle (2) and an upper brush (4) being installed on the fixing plate (9) of the upper lifting mechanism, and a lower atomizing nozzle (3) and a lower brush (5) being installed on the fixing plate (9) of the lower lifting mechanism.

9. The plate cleaning device according to claim 1, characterized in that: It also comprises a polishing wheel unit, which is used to clean the chemical reagent on the surface of the plate (1) after the plate (1) is painted.

10. A plate cleaning method, characterized in that: The plate cleaning device comprises any one of claims 1 to 9, wherein the cleaning method is as follows: The delay value is preset according to the distance from the position of the travel switch to the position of the nozzle unit; Set the spraying parameters of the sprinkler unit, including the duration of each spraying and the interval between spraying; The travel switch detects the induction signal of the end of the plate (1) passing through, and controls the electrical box (6) to control the spray head unit to start spraying according to the preset delay value, and the spray head unit sprays the chemical reagent on the surface of the plate (1) according to the set spraying parameters; After the spray head unit reaches the spraying time of each time, it moves to the brushing unit, and the brushing unit evenly brushes the chemical reagent sprayed on the board surface to the edge of the board (1); After the chemical reagent is applied, the plate (1) passes through a polishing wheel unit to clean the chemical reagent remaining on the surface of the plate (1).

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