Double-tile composite coating device for corrugated board printing

Abstract

The utility model relates to the technical field of corrugated board printing, in particular to a double-tile composite coating device for corrugated board printing, which comprises a bottom plate, a first supporting plate is arranged on one side of the top of the bottom plate, and a first coating roller is rotatably connected to the opposite side of the first supporting plate. A glue collecting groove is formed in the position, located over the first coating roller, of the opposite side of the first supporting plate, a second coating roller is arranged in the position, located over the glue collecting groove, of the opposite side of the first supporting plate, and one end of the first coating roller and one end of the second coating roller are sleeved with a first driving mechanism; a gluing mechanism is arranged on the opposite side of the first supporting plate and located over the second coating roller, and a second supporting plate is arranged in the middle of the top of the bottom plate. According to the improved design of the coating device, the first coating roller and the second coating roller, glue can be uniformly coated on two pieces of corrugated paper at the same time, and the drying box can ensure that all parts of the corrugated paper board can be fully heated, so that the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated board printing technical field, concretely is a double tile composite coating device for corrugated board printing. BACKGROUND

[0002] Corrugated board printing is a common printing process, which is the process of transferring ink to the surface of corrugated board through printing plate. Corrugated board has good cushioning performance and printing suitability, so it is widely used in packaging, printing and other fields. Corrugated board printing usually adopts offset printing, flexographic printing, gravure printing and other printing methods, and the specific selection depends on the requirements of printed matter, cost and production efficiency and other factors. The surface of corrugated board is relatively rough, so it is necessary to select ink with strong adhesion and fast drying speed. Excessive printing pressure can easily cause corrugated board deformation, affecting printing quality.

[0003] Coating device is a kind of equipment for coating a layer of special material on the surface of material, which has been widely used in many industrial fields. There are many kinds of coating devices, such as doctor blade coating machine, comma coating machine and roll coating machine. The working principle of coating device is to apply coating to coating roller through certain way, and then through the contact between coating roller and material surface, the coating is uniformly coated on the surface of material. Coating device has very wide application range, including paper, film, metal foil, plastic and other materials.

[0004] The inventor found that the prior art has the following problems in the process of realizing the utility model: 1. The existing coating device can only perform coating operation on single corrugated board, and it is difficult to perform synchronous coating operation on two corrugated boards, so its production efficiency is low; 2. The existing coating device is a single mechanism for coating corrugated board, and after the glue is attached to the surface of corrugated board, it lacks timely drying, which affects product quality. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a double -deck composite coating device for corrugated paperboard printing provides, to solve the coating device of existing in above -mentioned background art can only be to single corrugated paperboard coating operation, and it is difficult to carry out synchronous coating operation to two corrugated paperboard, and its production efficiency is lower and the coating device of existing is often realized to the single mechanism of corrugated paperboard coating operation, and its glue is attached to the surface of corrugated paperboard after, lack timely drying, thereby influence product quality problem. To realize above -mentioned purpose, the utility model provides the following technical scheme: a double -deck composite coating device for corrugated paperboard printing, including the bottom plate, one side of the bottom plate top is equipped with the first support board, the opposite side of first support board is rotatably connected with first coating roller, the opposite side of first support board is located the top of first coating roller and is equipped with the glue collection groove, the opposite side of first support board is located the top of glue collection groove and is equipped with the second coating roller, one end of first coating roller and second coating roller is sleeved with first drive mechanism, the opposite side of first support board is located the top of second coating roller and is equipped with the glue spreading mechanism, the middle part of the top of bottom plate is equipped with the second support board, the opposite side of second support board is rotatably connected with the roll roller, one end of roll roller is sleeved with second drive mechanism, the other side of bottom plate top is equipped with the drying box.

[0006] Further preferably, the first coating roller is divided into a first upper coating roller and a first lower coating roller, the outer wall of the first upper coating roller is attached to the bottom of the glue spreading mechanism, the left and right ends of the first upper coating roller and the first lower coating roller are rotatably connected to the opposite sides of the first support board, the second coating roller is divided into a second upper coating roller and a second lower coating roller, the outer wall of the second lower coating roller is immersed into the inside of the glue collection groove, the left and right ends of the second upper coating roller and the second lower coating roller are rotatably connected to the opposite sides of the first support board

[0007] Further preferably, the first drive mechanism includes a first motor, a transmission main wheel, a transmission follower and a first belt, the transmission main wheel is sleeved on the outer wall of the end of the first lower coating roller, the transmission follower is respectively sleeved on the outer wall of the end of the first upper coating roller, the second upper coating roller and the second lower coating roller, the first motor is inserted into one end of the first lower coating roller, and the first belt is sleeved on the outer wall of the transmission main wheel and the transmission follower.

[0008] Further preferably, the glue spreading mechanism includes bristles and a glue storage box, the glue storage box is erected on the top of the first support board, the bottom of the glue storage box is provided with a plurality of bristles, and the bristles are attached to the outer wall of the upper coating roller.

[0009] Further preferably, the roll roller is divided into an upper roll roller and a lower roll roller, and the left and right ends of the upper roll roller and the lower roll roller are rotatably connected to the opposite sides of the second support board.

[0010] Further preferably, the second driving mechanism comprises a second motor, a driving gear and a driven gear, the driving gear and the driven gear are sleeved on the outer wall of the end of the lower rolling roller and the upper rolling roller respectively, and the second motor is connected to one end of the lower rolling roller.

[0011] Further preferably, the front opening of the drying box is slidably connected with a blocking door, the rear opening of the drying box is provided with a blocking curtain, the top wall of the drying box is provided with a fan in the interlayer, the top wall of the drying box is provided with a plurality of through grooves, the left and right sides of the drying box are internally embedded with electric heating pipes, and the opposite sides of the electric heating pipes are provided with isolation nets.

[0012] Compared with the prior art, the drying box has the advantages that:

[0013] In the utility model, the design of the first coating roller and the second coating roller can uniformly coat glue on two corrugated papers at the same time, thereby greatly improving coating efficiency and shortening production cycle, and the two coating rollers can coat the upper and lower surfaces of the corrugated paper respectively, ensure the uniformity of coating quality, and the design of the first coating roller and the second coating roller can complete double corrugated coating at one time, reduce coating times, improve production efficiency, thereby better ensuring the uniformity and stability of coating quality, reducing the influence of human factors on coating quality, and reducing coating errors.

[0014] In the utility model, the combination of the electric heating pipe and the fan can quickly heat air and uniformly blow hot air to the corrugated board, ensure that each part of the corrugated board can be fully heated, thereby improving drying efficiency, the isolation net can prevent the corrugated board from directly contacting the electric heating pipe and avoid overheating damage, and the blocking curtain and the blocking door can realize the opening and closing of the opening of the drying box, facilitate the entry and output of the corrugated paper, and the sliding design of the blocking door makes the corrugated board. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a first coating roller structure schematic view of the utility model;

[0017] Figure 3 It is a rolling roller structure schematic view of the utility model;

[0018] Figure 4 It is a drying box structure schematic view of the utility model.

[0019] In the figure: 1, the bottom plate; 2, the first support plate; 3, the first coating roller; 301, the first upper coating roller; 302, the first lower coating roller; 4, the glue collecting groove; 5, the second coating roller; 501, the second upper coating roller; 502, the second lower coating roller; 6, the first driving mechanism; 601, the first motor; 602, the transmission main wheel; 603, the transmission from the wheel; 604, the first belt; 7, the glue coating mechanism; 701, the brush; 702, the glue storage box; 8, the second support plate; 9, the rolling roller; 901, the upper rolling roller; 902, the lower rolling roller; 10, the second driving mechanism; 1001, the second motor; 1002, the driving gear; 1003, the driven gear; 11, the drying box; 1101, the door; 1102, the curtain; 1103, the fan; 1104, the through slot; 1105, the electric heating pipe; 1106, the isolation net. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] Please refer to Figures 1 to 4 The present application provides a technical scheme: a double corrugated composite coating device for corrugated paperboard printing, comprising a bottom plate 1, one side of the top of the bottom plate 1 is provided with a first support plate 2, the opposite side of the first support plate 2 is rotatably connected with a first coating roller 3, the opposite side of the first support plate 3 is provided with a glue collecting groove 4 directly above the first coating roller 3, the opposite side of the first support plate 3 is provided with a glue collecting groove 4 directly above the first coating roller 3, the top of the bottom plate 1 is provided with a second support plate 8, the opposite side of the second support plate 8 is rotatably connected with a rolling roller 9, one end of the rolling roller 9 is sleeved with a second driving mechanism 10, the other side of the top of the bottom plate 1 is provided with a drying box 11.

[0022] In the present embodiment, as Figure 1 and Figure 2As shown, the first coating roller 3 is divided into a first upper coating roller 301 and a first lower coating roller 302, the outer wall of the first upper coating roller 301 is attached to the bottom of the glue coating mechanism 7, the left and right ends of the first upper coating roller 301 and the first lower coating roller 302 are rotatably connected to the opposite sides of the first support plate 2, the second coating roller 5 is divided into a second upper coating roller 501 and a second lower coating roller 502, the outer wall of the second lower coating roller 502 is immersed into the inside of the glue collecting groove 4, and the left and right ends of the second upper coating roller 501 and the second lower coating roller 502 are rotatably connected to the opposite sides of the first support plate 2; It should be noted that the operator can first pass two corrugated papers between the first upper coating roller 301 and the first lower coating roller 302 and the second upper coating roller 501 and the second lower coating roller 502, and start the first driving mechanism 6 to drive the first coating roller 3 and the second coating roller 5 to rotate, during which the upper and lower corrugated papers will be in contact with the outer wall of the first upper coating roller 301 and the second lower coating roller 502, respectively, during which the first upper coating roller 301 can transfer the glue on its surface to the surface of the corrugated paper through the glue coating mechanism 7, and the second lower coating roller 502 can transfer the glue attached from the inside of the glue collecting groove 4 to the surface of the corrugated paper in contact with it, and then the first coating roller 3 and the second coating roller 5 push the upper and lower corrugated papers to move forward synchronously, until reaching the rolling roller 9, in actual use, the design of the first coating roller 3 and the second coating roller 5 can uniformly coat glue on two corrugated papers at the same time, thereby greatly improving the coating efficiency and shortening the production cycle, and the two coating rollers can coat the upper and lower surfaces of the corrugated paper respectively, ensuring the uniformity of the coating quality, and the design of the first coating roller 3 and the second coating roller 5 can complete double corrugated coating at one time, reducing the coating times and improving the production efficiency, thereby better ensuring the uniformity and stability of the coating quality, reducing the influence of human factors on the coating quality, and reducing the coating error.

[0023] In this embodiment, as shown in Figure 1 and Figure 2As shown, the first driving mechanism 6 comprises a first motor 601, a transmission main wheel 602, transmission slave wheels 603 and a first belt 604, the transmission main wheel 602 is sleeved on the outer wall of the end of the first lower coating roller 302, the transmission slave wheels 603 are respectively sleeved on the outer wall of the end of the first upper coating roller 301, the second upper coating roller 501 and the second lower coating roller 502, the first motor 601 is inserted into one end of the first lower coating roller 302, and the first belt 604 is sleeved on the outer wall of the transmission main wheel 602 and the transmission slave wheels 603; it should be noted that after the operator passes two corrugated papers through between the first upper coating roller 301 and the first lower coating roller 302 and between the second upper coating roller 501 and the second lower coating roller 502, the operator can start the first motor 601 to drive the first lower coating roller 302 inserted with the first motor 601 and the transmission main wheel 602 sleeved on the outer wall of the end of the roller body to rotate, at the same time, the first belt 604 sleeved on the outer wall of the transmission main wheel 602 drives the three transmission slave wheels 603 arranged on the positive direction thereof to rotate together, so as to drive the first upper coating roller 301, the second upper coating roller 501 and the second lower coating roller 502 sleeved with the transmission slave wheels 603 to rotate synchronously, thereby pushing the two corrugated papers to move synchronously, in actual use, the first motor 601 as a power source transmits power to the transmission slave wheels 603 through the transmission main wheel 602 and the first belt 604, so as to drive the first upper coating roller 301, the second upper coating roller 501 and the second lower coating roller 502 to rotate synchronously, and the synchronous rotation of different rollers can ensure the uniformity of coating of the corrugated paper, thereby ensuring the production quality of the final product, and at the same time, by adjusting the rotating speed of the first motor 601, the rotating speed of the multiple rollers in the first coating roller 3 and the second coating roller 5 can be adjusted, so as to adjust the overall coating speed, so as to adapt to different production requirements.

[0024] In this embodiment, as Figure 2As shown, the glue applying mechanism 7 includes bristles 701 and glue storage boxes 702, the glue storage boxes 702 are arranged on the opposite side of the first support plate 2, the bottom of the glue storage boxes 702 is provided with a plurality of bristles 701, the bristles 701 are attached to the outer wall of the first upper coating roller 301; it should be noted that when the operator drives the first coating roller 3 and the second coating roller 5 to rotate through the first driving mechanism 6, the first upper coating roller 301 in the first coating roller 3 will be in contact with the bristles 701 in the glue applying mechanism 7 during rotation, at the same time, the glue stored in the glue storage boxes 702 will flow out through the gap between the bottom and the bristles 701 to soak the bristles 701, so that the glue can be coated on the outer wall of the first upper coating roller 301 during contact with the first upper coating roller 301, so that the first upper coating roller 301 can perform the glue applying operation when in contact with the corrugated board, in actual use, the design of the bristles 701 can uniformly coat the glue in the glue storage boxes 702 on the outer wall of the first upper coating roller 301, ensuring the coating quality, and the glue applying mechanism 7 can work automatically and continuously, without manual glue application, improving the production efficiency, while avoiding errors during manual glue application, ensuring the production quality of the final product, and the bristles 701 in the glue applying mechanism 7 can also ensure the uniform thickness of the glue coating on the first upper coating roller, avoiding local over-thickness or under-thickness.

[0025] In this embodiment, as shown in the figure, Figure 3 As shown, the rolling roller 9 is divided into an upper rolling roller 901 and a lower rolling roller 902, the left and right ends of the upper rolling roller 901 and the lower rolling roller 902 are rotatably connected to the opposite sides of the second support plate 8; it should be noted that when the first upper coating roller 301 in the first coating roller 3 pushes the two corrugated boards coated with glue to the rolling roller 9, the upper and lower corrugated boards will pass through between the upper rolling roller 901 and the lower rolling roller 902 at the same time and contact each other, during which the glue on the contact surface of the upper and lower corrugated boards is slowly bonded together under the extrusion of the upper rolling roller 901 and the lower rolling roller 902, thereby forming a complete corrugated board, and then the upper rolling roller 901 and the lower rolling roller 902 push the bonded corrugated board forward to the drying box 11, in actual use, through the extrusion of the upper rolling roller 901 and the lower rolling roller 902, the glue can penetrate better into the fibers of the corrugated board, enhancing the bonding strength of the board, making it more firm, and at the same time, the glue on the surfaces of the upper and lower corrugated boards can be more uniformly bonded together, thereby improving the bonding effect, and during the rolling process, the protrusions and depressions on the surface of the corrugated board can be smoothed, making the surface of the board more flat and smooth, thereby facilitating subsequent processing operations and improving the quality of the product.

[0026] In this embodiment, as shown in the figure, Figure 3As shown, the second driving mechanism 10 comprises a second motor 1001, a driving gear 1002 and a driven gear 1003, the driving gear 1002 and the driven gear 1003 are sleeved on the outer wall of the end of the lower and upper compression rollers 902 and 901 respectively, and the second motor 1001 is connected to one end of the lower compression roller 902. It should be noted that when the two corrugated paperboards are pushed to the compression roller 9, the operator can start the second motor 1001 to drive the lower compression roller 902 connected thereto to rotate, at the same time, the driving gear 1002 sleeved on the outer wall of the end of the lower compression roller 902 is also driven to rotate, and the upper compression roller 901 connected thereto is also rotated at the same time through the driven gear 1003 engaged therewith, so that the two corrugated paperboards passing through the upper and lower compression rollers 901 and 902 continue to move forward after being bonded together. In actual use, the second motor 1001 can provide stable power for the compression roller 9 through the gear transmission of the driving gear 1002 and the driven gear 1003, so as to ensure the smooth progress of the compression process, and by adjusting the rotating speed of the second motor 1001, the rotating speed of the compression roller 9 can be accurately controlled, so as to accurately control the bonding speed of the corrugated paperboard. At the same time, the second driving mechanism 10 can realize the automation of the compression process, reduce the manual intervention, and improve the production efficiency.

[0027] In this embodiment, as shown in Figure 4As shown, the front side opening of the drying box 11 is slidably connected with a blocking door 1101, the rear side opening of the drying box 11 is provided with a blocking curtain 1102, the top wall interlayer of the drying box 11 is provided with a fan 1103, the top wall of the drying box 11 is provided with a plurality of through grooves 1104, the left and right sides of the drying box 11 are internally embedded with electric heating pipes 1105, and the opposite sides of the electric heating pipes 1105 are provided with isolation nets 1106; it should be noted that when the rolling roller 9 pushes the corrugated paperboard adhered together to the drying box 11, the operating personnel can simultaneously start the electric heating pipes 1105 on the left and right sides of the inner wall of the drying box 11, so that the electric heating pipes 1105 heat the air inside the entire drying box 11, and then the blocking door 1101 is slid upward and pulled out, so that the corrugated paperboard can enter the inside of the drying box 11 from the front side opening thereof, and at the same time, the operating personnel can open the fan 1103, so that the fan blades of the fan 1103 rotate and drive the hot air in the drying box 11 to pass through the through grooves 1104 and blow to the surface of the corrugated paperboard, so as to dry the corrugated paperboard, and the dried corrugated paperboard will continue to pass through the blocking curtain 1102 arranged at the rear side opening of the drying box 11 and be output outward, in actual use, the combination of the electric heating pipes 1105 and the fan 1103 can quickly heat the air and blow the hot air to the corrugated paperboard uniformly, so as to ensure that each part of the corrugated paperboard can be fully heated, thereby improving the drying efficiency, the isolation net 1106 can prevent the corrugated paperboard from directly contacting the electric heating pipe 1105 and avoid overheating damage, and the blocking curtain 1102 and the blocking door 1101 can realize the opening and closing of the opening of the entire drying box 11, facilitate the entry and output of the corrugated paper from the opening, and the sliding design of the blocking door 1101 makes the entry of the corrugated paperboard more convenient and improves the work efficiency.

[0028] The use method and advantages of the utility model are as follows:

[0029] As Figure 1 , Figure 2 , Figure 3 And Figure 4As shown, first, the operator can first pass two corrugated paper from between the first upper coating roller 301 and the first lower coating roller 302, and the second upper coating roller 501 and the second lower coating roller 502, and then start the first motor 601 to drive the first lower coating roller 302 and the transmission main wheel 602 sleeved on the outer wall of the end of the roller body to rotate. At the same time, the first belt 604 sleeved on the outer wall of the transmission main wheel 602 drives the three transmission from the wheel 603 arranged on the positive side thereof to rotate together, so that the first upper coating roller 301, the second upper coating roller 501 and the second lower coating roller 502 sleeved with the transmission from the wheel 603 rotate synchronously, and the upper and lower corrugated paper is pushed to move synchronously. During this period, the upper and lower corrugated paper will be in contact with the outer wall of the first upper coating roller 301 and the second lower coating roller 502, respectively. During this period, the first upper coating roller 301 is in contact with the brush 701, so that the glue stored in the glue storage box 702 is evenly coated on the outer wall of the first upper coating roller 301. The first upper coating roller 301 transfers the glue to the surface of the corrugated paper, and the second lower coating roller 502 transfers the glue attached from the glue collection groove 4 to the surface of the corrugated paper in contact therewith. Then the first coating roller 3 and the second coating roller 5 push the upper and lower corrugated paper to move forward synchronously until reaching the rolling roller 9. The upper and lower corrugated paper will pass through the upper rolling roller 901 and the lower rolling roller 902 at the same time and contact each other. At the same time, the second motor 1001 is started to drive the lower rolling roller 902 inserted therewith to rotate. At this time, the driving gear 1002 is also driven to rotate together, and the upper rolling roller 901 is sleeved with the driving gear 1003 and the driving gear 1003 to rotate at the same time, so that the two corrugated paper passing through the upper rolling roller 901 and the lower rolling roller 902 continue to move forward after being bonded together, and when reaching the drying box 11, the operator can simultaneously start the electric heating pipe 1105 on the left and right inner walls of the drying box 11. The electric heating pipe 1105 heats the air inside the entire drying box 11, and then slides the door 1101 upwards to pull it out, so that the corrugated board can enter the inside from the front opening of the drying box 11. At the same time, the operator can open the fan 1103, so that the fan 1103 rotates and drives the hot air in the drying box 11 to pass through the through slot 1104 and blow to the surface of the corrugated board, so as to dry it. The corrugated board after drying will continue to pass through the blocking curtain 1102 arranged at the rear opening of the drying box 11 and output outward.

[0030] The basic principle, main features and advantages of the present application are shown and described above. The technical personnel in the industry should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A double web composite coating device for corrugated paperboard printing comprising a base plate (1), characterized in that: One side of the top of the bottom plate (1) is provided with a first support plate (2), the opposite side of the first support plate (2) is rotatably connected with a first coating roller (3), the opposite side of the first support plate (2) is provided with a glue collecting groove (4) above the first coating roller (3), the opposite side of the first support plate (2) is provided with a second coating roller (5) above the glue collecting groove (4), one end of the first coating roller (3) and the second coating roller (5) is sleeved with a first driving mechanism (6), the opposite side of the first support plate (2) is provided with a glue coating mechanism (7) above the second coating roller (5), the middle of the top of the bottom plate (1) is provided with a second support plate (8), the opposite side of the second support plate (8) is rotatably connected with a rolling roller (9), one end of the rolling roller (9) is sleeved with a second driving mechanism (10), the other side of the top of the bottom plate (1) is provided with a drying box (11).

2. A double web composite coating device for printing corrugated paperboard according to claim 1, characterized in that: The first coating roller (3) is divided into a first upper coating roller (301) and a first lower coating roller (302), the outer wall of the first upper coating roller (301) is attached to the bottom of the glue coating mechanism (7), the left and right ends of the first upper coating roller (301) and the first lower coating roller (302) are rotatably connected to the opposite side of the first support plate (2), the second coating roller (5) is divided into a second upper coating roller (501) and a second lower coating roller (502), the outer wall of the second lower coating roller (502) is immersed into the inside of the glue collecting groove (4), the left and right ends of the second upper coating roller (501) and the second lower coating roller (502) are rotatably connected to the opposite side of the first support plate (2).

3. A double web composite coating device for printing corrugated paperboard according to claim 2, characterized in that: The first driving mechanism (6) comprises a first motor (601), a transmission main wheel (602), a transmission from wheel (603) and a first belt (604), the transmission main wheel (602) is sleeved on the outer wall of the end of the first lower coating roller (302), the transmission from wheel (603) is respectively sleeved on the outer wall of the end of the first upper coating roller (301), the second upper coating roller (501) and the second lower coating roller (502), the first motor (601) is inserted into one end of the first lower coating roller (302), and the first belt (604) is sleeved on the outer wall of the transmission main wheel (602) and the transmission from wheel (603).

4. A double web composite coating device for printing corrugated paperboard as claimed in claim 2, wherein: The glue coating mechanism (7) comprises a brush (701) and a glue storage box (702), the glue storage box (702) is arranged on the opposite side of the first support plate (2), a plurality of brushes (701) are arranged on the bottom of the glue storage box (702), and the brushes (701) are attached to the outer wall of the first upper coating roller (301).

5. A double wall compound coating device for printing corrugated paperboard according to claim 1, characterized in that: The rolling roller (9) is divided into an upper rolling roller (901) and a lower rolling roller (902), the left and right ends of the upper rolling roller (901) and the lower rolling roller (902) are rotatably connected to the opposite side of the second support plate (8).

6. A double web composite coating device for printing corrugated paperboard according to claim 5, characterized in that: The second driving mechanism (10) comprises a second motor (1001), a driving gear (1002) and a driven gear (1003), the driving gear (1002) and the driven gear (1003) are sleeved on the end outer wall of the lower rolling roller (902) and the upper rolling roller (901) respectively, and the second motor (1001) is inserted into one end of the lower rolling roller (902).

7. A double wall compound coating device for printing corrugated paperboard according to claim 1, characterized in that: The front side opening of the drying box (11) is slidably connected with a blocking door (1101), the rear side opening of the drying box (11) is provided with a blocking curtain (1102), the top wall interlayer of the drying box (11) is provided with a fan (1103), a plurality of through grooves (1104) are formed in the top wall of the drying box (11), electric heating pipes (1105) are embedded in the left and right sides of the drying box (11), and isolation nets (1106) are arranged on the opposite sides of the electric heating pipes (1105).

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