Casting machine for carbon fiber plate and control method

Abstract

The invention discloses a casting machine for a carbon fiber plate and a control method, and relates to the field of carbon fiber plate processing equipment. A casting machine for a carbon fiber plate comprises a film laminating machine installed on the casting machine through an installation frame, and further comprises a material storage box connected to the installation frame in a lifting mode; according to the device, the hydraulic telescopic rod drives the plugging block to adjust the width of a slurry flowing channel of the coating groove, carbon fiber plates with different widths can be produced according to requirements, meanwhile, the distance between the coating box and the film covering roller is adjusted through the electric telescopic rod, the thickness of a coating on release paper can be controlled, and the coating quality is improved. Therefore, the carbon fiber plates with different thicknesses are produced, the specification range of products is widened, the universality of the equipment is improved, the pressure applying plate is pushed by the air cylinder to move at a constant speed in the material storage box to apply pressure to the slurry, the slurry is promoted to uniformly and stably flow to the film laminating roller through the coating groove, and the production quality of the carbon fiber plates is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of carbon fiber plate processing equipment, and in particular, relates to a casting machine for carbon fiber plate and a control method. Background Art

[0002] Carbon fiber sheets have excellent properties such as high strength, low density, and high temperature resistance. They are widely used in many fields such as aerospace, automotive industry, and sports equipment.

[0003] In the production process of carbon fiber sheets, the casting machine is one of the key equipment. Its main function is to evenly coat the slurry containing carbon fiber on the release paper, and finally cool it to form a continuous carbon fiber sheet.

[0004] However, the existing casting machine has many inconveniences when producing carbon fiber plates of different widths and thicknesses. The coating diameter of the traditional casting machine is usually fixed. When plates of different sizes need to be produced, it is often necessary to manually replace the coating heads of different diameters, which not only consumes a lot of time and manpower, but also the adjustment accuracy is difficult to guarantee, which easily leads to unstable product quality. In view of this, the present invention is specially proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a casting machine and a control method for carbon fiber sheets that can overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] A casting machine for carbon fiber plates, including a laminating machine installed on the casting machine through a mounting frame, and also includes: a material storage box, which is connected to the mounting frame for lifting; a coating box, which is fixedly connected to the material storage box through a discharge box, wherein the two ends of the coating box are open, and two blocking blocks are symmetrically slidably connected in the coating box, and the lower end of the coating box is provided with a coating groove, and the coating groove is used in conjunction with the laminating roller of the laminating machine; a pressure plate, which is slidably connected in the material storage box; a driving unit, which is arranged on the material storage box and is used to push the pressure plate to move in the material storage box.

[0008] Preferably, an electric telescopic rod is fixedly mounted on the mounting frame, and the material storage box is fixedly connected to the output end of the electric telescopic rod. When the electric telescopic rod pushes the material storage box to move, the distance between the coating box and the coating roller can be adjusted.

[0009] Preferably, hydraulic telescopic rods are fixedly installed at both ends of the top of the coating box, and the output ends of the two hydraulic telescopic rods are fixedly connected to two blocking blocks respectively.

[0010] Preferably, the driving part comprises a cylinder, the cylinder is fixedly mounted on the material storage box, and the pressure plate is fixedly connected to the output end of the cylinder.

[0011] In order to mix the slurry, preferably, a mixing tank is fixedly installed on the mounting frame, a feeding pipe is fixedly connected to the mixing tank, the inner wall of the bottom of the mixing tank is conically arranged, a discharge pipe is fixedly connected to the bottom of the mixing tank, the mixing tank is connected to the storage box through the discharge pipe, and a solenoid valve is arranged on the discharge pipe.

[0012] In order to ensure that the slurry is fully and evenly mixed in the mixing tank, a hollow cylinder is rotatably connected in the mixing tank, and a plurality of groups of elastic rods are equidistantly fixedly connected to the hollow cylinder. A counterweight ball is fixedly installed at one end of the elastic rod away from the hollow cylinder, and each group of the elastic rods is provided with a plurality of them. A motor is fixedly installed on the mixing tank, and a bevel gear 2 is fixedly installed at one end of the hollow cylinder that passes through the top of the mixing tank, and a bevel gear 1 that meshes with the bevel gear 2 is fixedly installed on the output end of the motor.

[0013] In order to make the slurry more fully and evenly mixed in the mixing tank, further, the side wall of the lower end of the hollow cylinder is provided with a feed port, and the side wall of the upper end is provided with a discharge port. The mixing tank is rotatably connected with a rotating shaft, and the rotating shaft is located in the hollow cylinder. A spiral propulsion piece in contact with the inner wall of the hollow cylinder is fixedly installed on the rotating shaft. One end of the rotating shaft that passes through the upper end of the hollow cylinder is fixedly provided with a bevel gear three that is meshed with a bevel gear one.

[0014] In order to filter and intercept particulate impurities in the slurry during the slurry mixing process, further, a filter screen is fixedly installed in the mixing tank, the filter screen is in contact with the outer wall of the hollow cylinder, and the filter screen is located below the discharge port.

[0015] In order to introduce gas into the mixing tank and form bubbles in the slurry, the bubbles will drive the surrounding slurry to produce convection during the rising process, thereby promoting the mixing of slurries at different positions in the tank. Furthermore, a piston cylinder is fixedly installed on the mixing tank, a piston disk is slidably connected in the piston cylinder, a piston rod is rotatably connected to the piston disk, a crankshaft is fixedly installed on the rotating shaft, the crankshaft is rotatably connected to the piston rod, a conduit 1 and a conduit 2 are fixedly connected to the piston cylinder, an air nozzle is fixedly installed on the inner wall of the bottom of the mixing tank, and the piston cylinder is connected to the air nozzle through conduit 2.

[0016] A control method for a tape casting machine for a carbon fiber sheet is operated by the following steps:

[0017] Step 1: Mix the carbon fiber slurry evenly and add it into the storage box, so that the slurry flows into the coating box through the discharge box, and then the slurry can flow to the coating roller through the coating tank, and the slurry is formed into a thin film on the release paper under the rolling of the coating roller, and finally cooled to form a continuous carbon fiber sheet;

[0018] Step 2: When producing carbon fiber sheets, the slurry can be pressed by moving the pressure plate downward at a uniform speed in the storage box, so that the slurry flows evenly and stably through the coating tank to the coating roller;

[0019] Step 3: When it is necessary to change the width of the channel through which the slurry can flow in the coating tank, the width of the channel through which the slurry can flow can be adjusted by using two blocking blocks that can move synchronously in opposite directions in the coating box;

[0020] Step 4: When the distance between the coating box and the laminating roller needs to be changed, move the storage box upward or downward. When the storage box moves upward or downward, the coating box on it moves synchronously, thereby adjusting the distance between the coating box and the laminating roller.

[0021] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] The present invention drives the sealing block through the hydraulic telescopic rod to adjust the width of the slurry flow channel in the coating trough, so that carbon fiber plates of different widths can be produced according to demand. At the same time, the distance between the coating box and the coating roller is adjusted by the electric telescopic rod, so the thickness of the coating on the release paper can be controlled, thereby realizing the production of carbon fiber plates of different thicknesses, broadening the specification range of the product, and improving the versatility and production flexibility of the equipment. The cylinder drives the pressure plate to move at a uniform speed in the storage box to apply pressure to the slurry, so that the slurry is caused to flow evenly and stably through the coating trough to the coating roller, which helps to improve the production quality of the carbon fiber plate and make the formed film have uniform thickness and stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a partial structural schematic diagram of the present invention Figure 1 ;

[0025] Figure 3 It is a schematic diagram of the expansion of the coating box and the blocking block of the present invention;

[0026] Figure 4 It is a partial structural schematic diagram of the present invention Figure 2 ;

[0027] Figure 5 The present invention Figure 1 A magnified view of part A;

[0028] Figure 6 It is a front view of the material storage box, coating box and mixing tank of the present invention.

[0029] In the figure: 1. mounting frame; 2. material storage box; 201. discharge box; 202. coating box; 203. coating tank; 204. blocking block; 205. hydraulic telescopic rod; 3. electric telescopic rod; 4. pressure plate; 401. cylinder; 5. mixing tank; 501. hollow cylinder; 502. elastic rod; 503. counterweight ball; 504. motor; 505. bevel gear one; 506. bevel gear two; 6. rotating shaft; 601. spiral propulsion piece; 602. feed port; 603. discharge port; 604. filter screen; 605. bevel gear three; 7. discharge pipe; 8. piston cylinder; 801. piston disc; 802. piston rod; 803. crankshaft; 804. conduit one; 805. conduit two; 806. air nozzle. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0031] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 6 A casting machine for carbon fiber plates, including a film-casting machine installed on a film-casting machine through a mounting frame 1, and also including: a material storage box 2, which is connected to the mounting frame 1 by lifting; a coating box 202, which is fixedly connected to the material storage box 2 through a discharge box 201, wherein both ends of the coating box 202 are open, and two blocking blocks 204 are symmetrically slidably connected in the coating box 202, and a coating groove 203 is provided at the lower end of the coating box 202, and the coating groove 203 is used in conjunction with the film-coating roller of the film-coating machine; a pressure plate 4, which is slidably connected in the material storage box 2; a driving part, which is arranged on the material storage box 2 and is used to push the pressure plate 4 to move in the material storage box 2.

[0032] An electric telescopic rod 3 is fixedly mounted on the mounting frame 1, and the material storage box 2 is fixedly connected to the output end of the electric telescopic rod 3. When the electric telescopic rod 3 pushes the material storage box 2 to move, the distance between the coating box 202 and the coating roller can be adjusted.

[0033] Hydraulic telescopic rods 205 are fixedly installed at both ends of the top of the coating box 202 , and the output ends of the two hydraulic telescopic rods 205 are fixedly connected to the two blocking blocks 204 respectively.

[0034] The driving part includes a cylinder 401 , which is fixedly mounted on the material storage box 2 , and a pressure plate 4 is fixedly connected to an output end of the cylinder 401 .

[0035] When in use, the slurry containing carbon fibers is first mixed evenly and then added to the storage box 2, so that the slurry can flow into the coating box 202 through the discharge box 201, and then the slurry flowing into the coating box 202 flows to the coating roller through the coating tank 203, and the slurry is formed into a thin film on the release paper under the rolling of the coating roller, and finally cooled to form a continuous carbon fiber sheet;

[0036] At the same time, the cylinder 401 is started, and the cylinder 401 pushes the pressure plate 4 to move downward at a uniform speed in the storage box 2. During the downward movement, the pressure plate 4 can apply pressure to the slurry in the storage box 2, so that the slurry can flow evenly and stably through the coating tank 203 to the coating roller, thereby helping to improve the production quality of the carbon fiber sheet.

[0037] When producing carbon fiber sheets, when it is necessary to change the width of the channel through which the slurry flows in the coating tank 203, the hydraulic telescopic rod 205 is started. When the hydraulic telescopic rod 205 is extended or retracted, the two blocking blocks 204 can be driven to move synchronously in opposite directions in the coating box 202, so that the width of the channel through which the slurry flows in the coating tank 203 can be adjusted according to demand, and the width of the slurry covered by the coating roller on the release paper can be controlled, so that carbon fiber sheets of different widths can be produced according to demand;

[0038] When producing carbon fiber sheets, when it is necessary to change the distance between the coating box 202 and the coating roller, the electric telescopic rod 3 is started. When the electric telescopic rod 3 is extended or retracted, the material storage box 2 will move up and down with the extension or retraction of the electric telescopic rod 3, thereby driving the coating box 202 connected thereto to move synchronously, thereby adjusting the distance between the coating box 202 and the coating roller. When the distance is reduced, after the slurry flows out from the coating groove 203 of the coating box 202, the squeezing effect of the smaller gap between the coating roller and the coating box 202 is enhanced, and the thickness of the coating formed on the release paper will become thinner accordingly. On the contrary, when the distance is increased, the squeezing effect on the slurry is weakened, and a thicker coating can be formed on the release paper, so that carbon fiber sheets of different thicknesses can be produced according to demand.

[0039] Example 2: Reference Figure 1 , Figure 4 , Figure 6 , a casting machine for carbon fiber sheets, which is basically the same as Example 1, and further, a mixing tank 5 is fixedly installed on the mounting frame 1, and a feeding pipe is fixedly connected to the mixing tank 5. The inner wall of the bottom of the mixing tank 5 is conical, and a discharge pipe 7 is fixedly connected to the bottom of the mixing tank 5. The mixing tank 5 is connected to the storage box 2 through the discharge pipe 7, and a solenoid valve is provided on the discharge pipe 7.

[0040] When it is necessary to mix the slurry for producing the carbon fiber sheet, firstly, the slurry to be mixed is added into the mixing tank 5 through the feeding pipe, and the mixing operation is performed in the mixing tank 5;

[0041] At the same time, since the inner wall of the bottom of the mixing tank 5 is conical, under the action of gravity, the mixed slurry will naturally gather to the bottom and flow to the discharge pipe 7. The solenoid valve plays a switch control role. When the solenoid valve is opened, the slurry can flow into the storage box 2 through the discharge pipe 7 under the action of gravity, so as to reserve the slurry for subsequent coating operations. When the solenoid valve is closed, the slurry can be prevented from flowing out, so as to facilitate the continuation of mixing and other operations in the mixing tank 5.

[0042] Example 3: Reference Figure 1 , Figure 4 , Figure 5 , a casting machine for carbon fiber plates, which is basically the same as Example 1, and further, a hollow cylinder 501 is rotatably connected in the mixing tank 5, and a plurality of groups of elastic rods 502 are equidistantly fixedly connected to the hollow cylinder 501, and a counterweight ball 503 is fixedly installed at one end of the elastic rod 502 away from the hollow cylinder 501, and each group of elastic rods 502 is provided with a plurality of weight balls, and a motor 504 is fixedly installed on the mixing tank 5, and a bevel gear 2 506 is fixedly installed on one end of the hollow cylinder 501 that passes through the top of the mixing tank 5, and a bevel gear 1 505 meshing with the bevel gear 2 506 is fixedly installed on the output end of the motor 504.

[0043] Start the motor 504, and the motor 504 drives the hollow cylinder 501 to rotate through the meshing connection of the bevel gear 1 505 and the bevel gear 2 506. When the hollow cylinder 501 rotates, the elastic rod 502 and the counterweight ball 503 fixed thereon rotate accordingly, so that the slurry is mixed. At the same time, due to the existence of the counterweight ball 503, centrifugal force is generated during the rotation process, and the elastic rod 502 is elastically deformed due to the centrifugal force of the counterweight ball 503, thereby continuously changing the stirring range in the mixing tank 5, so that slurries at different positions and in different states are mixed with each other, thereby improving the uniformity of the slurry mixing.

[0044] Example 4: Reference Figure 1 , Figure 4 , Figure 5 , Figure 6 , a casting machine for carbon fiber plates, which is basically the same as Example 1, and further, a feed port 602 is opened on the side wall of the lower end of the hollow cylinder 501, and a discharge port 603 is opened on the side wall of the upper end, and a rotating shaft 6 is rotatably connected to the mixing tank 5, and the rotating shaft 6 is located in the hollow cylinder 501. A spiral propulsion piece 601 in contact with the inner wall of the hollow cylinder 501 is fixedly installed on the rotating shaft 6, and a bevel gear three 605 meshing with the bevel gear one 505 is fixedly installed on one end of the rotating shaft 6 that passes through the upper end of the hollow cylinder 501.

[0045] A filter screen 604 is fixedly installed in the mixing tank 5 . The filter screen 604 is in contact with the outer wall of the hollow cylinder 501 . The filter screen 604 is located below the discharge port 603 .

[0046] When the motor 504 is running, it can also drive the rotating shaft 6 to rotate through the meshing connection between the bevel gear 1 505 and the bevel gear 3 605, and the spiral propulsion piece 601 thereon rotates synchronously with the rotating shaft 6. At this time, after the slurry enters the hollow cylinder 501 from the feed port 602, the spiral propulsion piece 601 will use its spiral structure to push the slurry upward along the axial direction of the hollow cylinder 501 during the rotation process, so that the slurry flows out from the discharge port 603 and flows back into the mixing tank 5, so that the slurry can be mixed in all directions and at multiple levels in the mixing tank 5, effectively improving the efficiency and uniformity of the slurry mixing, and for slurry containing a variety of slurries of different properties (such as carbon fiber and different types of resins, etc.), it can better fuse them together, thereby improving the quality stability of the carbon fiber sheets produced subsequently;

[0047] At the same time, when the slurry flows toward the discharge port 603 in the mixing tank 5 under the push of the spiral propulsion piece 601, due to the blocking effect of the filter screen 604, the impurity particles with a particle size larger than the filter holes of the filter screen 604 will be intercepted above the filter screen 604, while the slurry that meets the requirements can pass through the filter screen 604 smoothly and continue to participate in the mixing, thereby filtering and removing impurities in the slurry and ensuring the quality of the slurry entering the subsequent production process.

[0048] Example 5: Reference Figure 1 , Figure 4 , Figure 5 , a casting machine for carbon fiber plates, which is basically the same as Example 1, and further, a piston cylinder 8 is fixedly installed on the mixing tank 5, a piston disk 801 is slidably connected in the piston cylinder 8, a piston rod 802 is rotatably connected to the piston disk 801, a crankshaft 803 is fixedly installed on the rotating shaft 6, the crankshaft 803 is rotatably connected to the piston rod 802, a conduit 1 804 and a conduit 2 805 are fixedly connected to the piston cylinder 8, an air nozzle 806 is fixedly installed on the inner wall of the bottom of the mixing tank 5, and the piston cylinder 8 is connected to the air nozzle 806 through the conduit 2 805;

[0049] When the rotating shaft 6 rotates under the drive of the motor 504, the crankshaft 803 thereon makes a circular motion. Since the crankshaft 803 is rotatably connected with the piston rod 802, during the movement of the crankshaft 803, the piston rod 802 is driven to make a reciprocating motion, thereby pushing the piston plate 801 to slide back and forth in the piston cylinder 8. When the piston plate 801 moves to the side away from the conduit 1 804, a negative pressure is formed in the piston cylinder 8, and the outside air is sucked into the piston cylinder 8 through the conduit 1 804. When the piston plate 801 moves to the side close to the conduit 1 804, the gas in the piston cylinder 8 is compressed, and then transported into the air nozzle 806 through the conduit 2 805, and sprayed into the mixing tank 5 at a certain pressure, so that bubbles are formed in the slurry. The bubbles drive the surrounding slurry to produce convection during the rising process, thereby causing the slurries at different positions in the mixing tank 5 to mix with each other, further improving the uniformity of the slurry mixing.

[0050] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent will not depart from the scope of the technical solution of the present invention.

Claims

1. A tape casting machine for carbon fiber sheets, comprising a mounting frame (1) mounted on a laminating machine of the tape casting machine, characterized in that: Also includes: A material storage box (2) connected to the mounting frame (1) in a lifting manner; The coating box (202) is fixedly connected to the material storage box (2) through the material discharge box (201). The two ends of the coating box (202) are open, two blocking blocks (204) are symmetrically slidably connected inside the coating box (202), and a coating groove (203) is provided at the lower end of the coating box (202), and the coating groove (203) is used in conjunction with a coating roller of a coating machine; A pressure plate (4) slidably connected in the material storage box (2); The driving unit is arranged on the material storage box (2) and is used to push the pressure plate (4) to move inside the material storage box (2).

2. A tape casting machine for carbon fiber sheets according to claim 1, characterized in that: An electric telescopic rod (3) is fixedly mounted on the mounting frame (1); the material storage box (2) is fixedly connected to the output end of the electric telescopic rod (3); when the electric telescopic rod (3) pushes the material storage box (2) to move, the distance between the coating box (202) and the coating roller can be adjusted.

3. A tape casting machine for carbon fiber sheets according to claim 1, characterized in that: Hydraulic telescopic rods (205) are fixedly installed at both ends of the top of the coating box (202), and the output ends of the two hydraulic telescopic rods (205) are fixedly connected to the two blocking blocks (204) respectively.

4. A tape casting machine for carbon fiber sheets according to claim 1, characterized in that: The driving part comprises a cylinder (401), the cylinder (401) is fixedly mounted on the material storage box (2), and the pressure plate (4) is fixedly connected to the output end of the cylinder (401).

5. The tape casting machine for carbon fiber sheet according to claim 1, characterized in that: A mixing tank (5) is fixedly mounted on the mounting frame (1), a feeding pipe is fixedly connected to the mixing tank (5), the inner wall of the bottom of the mixing tank (5) is arranged in a conical shape, a discharge pipe (7) is fixedly connected to the bottom of the mixing tank (5), the mixing tank (5) is connected to the material storage box (2) via the discharge pipe (7), and a solenoid valve is arranged on the discharge pipe (7).

6. A tape casting machine for carbon fiber sheets according to claim 5, characterized in that: A hollow cylinder (501) is rotatably connected inside the mixing tank (5), and a plurality of groups of elastic rods (502) are equidistantly fixedly connected to the hollow cylinder (501). A weighted ball (503) is fixedly mounted on one end of the elastic rod (502) away from the hollow cylinder (501), and each group of the elastic rods (502) is provided with a plurality of weighted balls. A motor (504) is fixedly mounted on the mixing tank (5), and a second bevel gear (506) is fixedly mounted on one end of the hollow cylinder (501) penetrating the top of the mixing tank (5), and a first bevel gear (505) meshingly connected with the second bevel gear (506) is fixedly mounted on the output end of the motor (504).

7. A tape casting machine for carbon fiber sheets according to claim 6, characterized in that: The side wall of the lower end of the hollow cylinder (501) is provided with a feed inlet (602), and the side wall of the upper end is provided with a discharge outlet (603). The mixing tank (5) is rotatably connected with a rotating shaft (6), the rotating shaft (6) is located in the hollow cylinder (501), and a spiral propulsion piece (601) in contact with the inner wall of the hollow cylinder (501) is fixedly mounted on the rotating shaft (6). One end of the rotating shaft (6) that passes through the upper end of the hollow cylinder (501) is fixedly mounted with a bevel gear three (605) that is meshed with a bevel gear one (505).

8. A tape casting machine for carbon fiber sheets according to claim 7, characterized in that: A filter screen (604) is fixedly installed in the mixing tank (5), and the filter screen (604) is in contact with the outer wall of the hollow cylinder (501). The filter screen (604) is located below the discharge port (603).

9. A tape casting machine for carbon fiber sheets according to claim 7, characterized in that: A piston cylinder (8) is fixedly mounted on the mixing tank (5), a piston plate (801) is slidably connected inside the piston cylinder (8), a piston rod (802) is rotatably connected to the piston plate (801), a crankshaft (803) is fixedly mounted on the rotating shaft (6), the crankshaft (803) is rotatably connected to the piston rod (802), a conduit 1 (804) and a conduit 2 (805) are fixedly connected to the piston cylinder (8), an air jet (806) is fixedly mounted on the inner wall of the bottom of the mixing tank (5), and the piston cylinder (8) is connected to the air jet (806) via the conduit 2 (805).

10. A control method for a tape casting machine for a carbon fiber sheet as claimed in claim 1, characterized in that: Use the following steps: Step 1: Mix the carbon fiber slurry evenly and add it to the storage box (2), so that the slurry flows into the coating box (202) through the discharge box (201), and then the slurry flows to the coating roller through the coating tank (203), and the slurry is formed into a thin film on the release paper under the rolling of the coating roller, and finally cooled to form a continuous carbon fiber sheet; Step 2: When producing carbon fiber sheets, the pressure plate (4) can be moved downward at a uniform speed in the storage box (2) to apply pressure to the slurry, so that the slurry flows evenly and stably through the coating tank (203) to the coating roller; Step 3: When it is necessary to change the width of the channel through which the slurry can flow in the coating tank (203), the width of the channel through which the slurry can flow in the coating tank (203) can be adjusted by using two blocking blocks (204) that can move synchronously in opposite directions or in opposite directions in the coating box (202); Step 4: When it is necessary to change the distance between the coating box (202) and the coating roller, move the storage box (2) upward or downward. When the storage box (2) moves upward or downward, the coating box (202) thereon moves synchronously therewith, thereby adjusting the distance between the coating box (202) and the coating roller.

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