A coating machine capable of increasing capacity

Abstract

The application discloses a coating machine capable of increasing capacity, which comprises a machine box, a rotating cylinder arranged in the machine box and used for coating materials, a material bin fixedly arranged on the machine box and located on one side of an opening end of the rotating cylinder, an adjusting plate horizontally movably arranged in the material bin and capable of moving towards or away from the rotating cylinder in the material bin, and the adjusting plate moves towards the rotating cylinder and abuts against the rotating cylinder when the capacity of the rotating cylinder is increased, a power assembly arranged on the machine box and in transmission connection with the rotating cylinder and used for driving the rotating cylinder to rotate. In the application, in order to increase the capacity of the rotating cylinder, the adjusting plate is abutted against the opening end of the rotating cylinder, so that the materials cannot overflow from the opening end of the rotating cylinder, and the capacity of the rotating cylinder is increased, and a large-size rotating cylinder does not need to be additionally replaced.

Description

Technical Field

[0001] This invention relates to the field of coating machine technology, and more particularly to a coating machine capable of increasing capacity. Background Technology

[0002] A coating machine is a highly efficient, energy-saving, safe, and clean mechatronic device capable of organic film coating, water-soluble film coating, and sustained-release / controlled-release coating of tablets, pills, and candies. The capacity of the coating machine's pot determines its output; therefore, increasing output requires increasing the pot capacity. Current market models allow for adjusting output by changing pots of different capacities for the same coating process. However, this necessitates replacing pots of corresponding capacities, a cumbersome and time-consuming process that impacts production schedules. Furthermore, to accommodate pots of varying sizes, manufacturers design the machine's dimensions to accommodate maximum output, resulting in exceptionally large machines that occupy valuable cleanroom space and increase manufacturing costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a coating machine that can increase capacity.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A coating machine capable of increasing capacity, including a casing;

[0006] A rotating drum, rotatably mounted inside the casing, is used for coating materials;

[0007] The material bin is fixedly installed on the chassis and located on one side of the opening end of the rotating cylinder;

[0008] An adjusting plate, disposed within the material hopper, is capable of moving closer to or further away from the rotating cylinder within the material hopper; when the capacity of the rotating cylinder increases, the adjusting plate moves closer to the rotating cylinder and comes into contact with the rotating cylinder.

[0009] A power unit, mounted on the chassis, is connected to the rotating cylinder for driving the rotating cylinder to rotate.

[0010] Preferably, the rotating cylinder includes a cylinder body, one end of which is fixedly provided with a mounting plate, which is connected to the power assembly; the other end of the cylinder body is an open end, and an installation ring is fixedly provided at the open end of the cylinder body, one end of which extends into the material bin, and when the rotating cylinder increases its capacity, the adjusting plate abuts against the installation ring.

[0011] Preferably, the adjusting plate is fixedly provided with a slot on the side near the rotating cylinder. The slot has an arc-shaped structure, and the shape of the slot is adapted to the shape of the mounting ring. The mounting ring can be locked in the slot.

[0012] Preferably, a compression strip is slidably disposed in the slot, and a plurality of compression springs are disposed between the compression strip and the adjusting plate.

[0013] Preferably, a telescopic component is fixedly provided on the side of the material bin away from the rotating cylinder, and the movable end of the telescopic component is fixedly connected to the adjusting plate for driving the adjusting plate to move within the material bin.

[0014] Preferably, a guide rod is fixedly provided on the adjusting plate, and the guide rod is slidably disposed on the material bin.

[0015] Preferably, the material bin has a door hinged to the side away from the rotating cylinder, and the telescopic component is fixedly mounted on the door.

[0016] Preferably, the power assembly includes a drive motor, which is fixedly mounted on the chassis, and the output shaft of the drive motor passes through the chassis and is fixedly connected to the rotating cylinder.

[0017] Preferably, the material silo is fixedly provided with an inlet pipe and an outlet pipe. The inlet pipe is located at the upper end of the material silo, and one end of the inlet pipe extends into the rotating cylinder. The outlet pipe is located at the lower end of the material silo and is used for discharging materials.

[0018] Preferably, a spraying assembly is also provided, the spraying assembly including a spraying pipe disposed on the material silo, one end of the spraying pipe extending into the rotating cylinder, and the spraying pipe being provided with multiple nozzles for spraying the spray agent into the rotating cylinder.

[0019] The beneficial effects of adopting the above technical solution are as follows:

[0020] 1. In this invention, an adjusting plate is horizontally movable on the material bin. When the tablet material is coated, the adjusting plate is moved to one side of the rotating drum until the adjusting plate abuts against one end of the rotating drum. At this time, the adjusting plate can block the end of the rotating drum to prevent the material from overflowing from the rotating drum, thereby increasing the capacity of the rotating drum of the coating machine and enabling the rotating drum to hold more material.

[0021] 2. In this invention, the adjusting plate is provided with a slot that matches the mounting ring, and a compression strip is slidably arranged in the slot. A compression spring is provided between the compression strip and the adjusting plate. Therefore, when the rotating cylinder is blocked, the compression spring can play a buffering role and effectively prevent hard collision between the adjusting plate and the rotating cylinder, which would cause damage. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of the adjustment plate of the present invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the rotating cylinder of the present invention;

[0026] Figure 5 This is a perspective view of another embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of the fixing frame of the present invention.

[0028] In the diagram: 1 is the chassis, 2 is the rotating cylinder, 3 is the material hopper, 4 is the adjusting plate, 5 is the cylinder body, 6 is the mounting plate, 7 is the mounting ring, 8 is the slot, 9 is the extrusion strip, 10 is the extrusion spring, 11 is the telescopic component, 12 is the guide rod, 13 is the hopper door, 14 is the drive motor, 15 is the feed pipe, 16 is the discharge pipe, 17 is the spray pipe, 18 is the spray nozzle, 19 is the mixing blade, 20 is the air inlet pipe, 21 is the exhaust pipe, 22 is the hot air pipe, 23 is the fixed frame, 24 is the electric telescopic rod, 25 is the moving plate, and 26 is the connecting hose. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1 to 4 As shown, a coating machine capable of increasing capacity includes a casing 1, which is a closed cubic structure. A rotating cylinder 2 is rotatably installed inside the casing 1. The rotating cylinder 2 is horizontally rotatable, with one end being an open end for material entry and exit. During rotation, the rotating cylinder 2 can coat and mix the material. A material bin 3 is fixedly installed on one side of the casing 1, located on one side of the open end of the rotating cylinder 2. An adjusting plate 4 is horizontally movable inside the material bin 3, capable of moving horizontally towards or away from the rotating cylinders 2. A power assembly is also installed on the casing 1, which is connected to one end of the rotating cylinder 2 for driving the rotating cylinder 2 to rotate inside the casing 1.

[0033] In this invention, materials are conveyed from the material bin 3 into the rotating drum 2. The power assembly drives the rotating drum 2 to rotate within the housing 1, thereby ensuring uniform mixing of the materials in the rotating drum 2. Since the rotating drum 2 is horizontally positioned with its open end located at one end, as shown in the drum of a drum washing machine, once a certain amount of material is added to the rotating drum 2 and the accumulated height of the material exceeds the lowest point of the opening end of the rotating drum 2, the material overflows from the opening end. Therefore, in order to increase the capacity of the rotating drum 2 without replacing it with a larger size, an adjusting plate 4 can be horizontally moved within the material bin 3. The adjusting plate 4 is set vertically. When it is necessary to increase the capacity of the rotating cylinder 2, the adjusting plate 4 can be moved to one side of the rotating cylinder 2 until the adjusting plate 4 abuts against the opening end of the rotating cylinder 2. The adjusting plate 4 can block the opening end of the rotating cylinder 2, so that even if the material accumulation height exceeds the lowest point of the opening end of the rotating cylinder 2, it will not overflow from the rotating cylinder 2, thereby increasing the capacity of the rotating cylinder 2 and enabling the coating machine to process more material. When the coating is completed and the material is discharged, simply move the adjusting plate 4 away from the rotating cylinder 2 to separate the adjusting plate 4 from the rotating cylinder 2, and the material will be discharged from the rotating cylinder 2.

[0034] It should be noted that the reference Figure 3 As shown, the adjusting plate 4 has a semi-circular structure and is located in the lower half of the rotating cylinder 2. When the adjusting plate 4 comes into contact with the rotating cylinder 2, it can block the lower half of the opening end of the rotating cylinder 2, thereby increasing the capacity of the rotating cylinder 2 and preventing material overflow. The upper half of the opening end of the rotating cylinder 2 has an open structure, which makes it easy to add material into the rotating cylinder 2.

[0035] refer to Figure 4 As shown, in one embodiment of the present invention, the rotating cylinder 2 includes a cylinder body 5. The cylinder body 5 has a chamber for mixing materials inside. A mounting plate 6 is fixedly installed at one end of the cylinder body 5. The mounting plate 6 is connected to the power assembly and can also be used to seal one end of the cylinder body 5. The other end of the cylinder body 5 is an open end. A mounting ring 7 is fixedly installed at the open end of the cylinder body 5. One end of the mounting ring 7 extends into the material bin 3. When the capacity of the rotating cylinder 2 increases, the adjusting plate 4 abuts against the mounting ring 7. In this embodiment, the cylinder body 5, the mounting plate 6, and the mounting ring 7 are integrally formed. The diameter of the cylinder body 5 is larger than the diameter of the mounting ring 7. Therefore, when materials are added to the rotating cylinder 2 and stored in the cylinder body 5, when the material accumulation height reaches the lowest point of the mounting ring 7, the material can overflow from the mounting ring 7. To avoid overflow, the adjusting plate 4 abuts against one end of the mounting ring 7 to seal the mounting ring 7, allowing the rotating cylinder 2 to hold more materials.

[0036] It should be noted that the mounting ring 7 extends into the material hopper 3 after passing through the side plate of the housing 1. The mounting ring 7 is rotatably mounted in the housing 1, and the housing 1 serves to support the rotation of the mounting ring 7. In order to make the rotation of the mounting ring 7 more stable, a bearing is provided between the mounting ring 7 and the housing 1 to facilitate the rotation of the mounting ring 7.

[0037] refer to Figure 3 As shown, in one embodiment of the present invention, a slot 8 is fixedly provided on the side of the adjusting plate 4 near the rotating cylinder 2. The slot 8 has an arc-shaped structure, and its shape is adapted to the shape of the mounting ring 7. The mounting ring 7 can be locked in the slot 8. A pressing strip 9 is slidably arranged in the slot 8, and multiple pressing springs 10 are arranged between the pressing strip 9 and the adjusting plate 4. In this embodiment, the shape of the slot 8 is adapted to the shape of the mounting ring 7. Therefore, when it is necessary to seal the rotating cylinder 2, as the adjusting plate 4 moves towards one side of the rotating cylinder 2, the mounting ring 7 is locked in the slot 8 until the end of the mounting ring 7 abuts against the pressing strip 9. The pressing springs 10 can play a buffering role to prevent equipment damage during the collision. At the same time, the pressing springs 10 can press the pressing strip 9 towards the side of the mounting ring 7, so that the pressing strip 9 and the end of the mounting ring 7 are always tightly fitted, thus playing a sealing role.

[0038] It should be noted that the extrusion strip 9 has a wear-resistant layer on the side near the rotating cylinder 2. If it is made of polytetrafluoroethylene, it has strong wear resistance and a low coefficient of friction, so it will not affect the rotation of the rotating cylinder 2.

[0039] refer to Figure 1 and Figure 2 As shown, in one embodiment of the present invention, a telescopic member 11 is fixedly installed on the side of the material bin 3 away from the rotating cylinder 2. The movable end of the telescopic member 11 is fixedly connected to the adjusting plate 4, which is used to drive the adjusting plate 4 to move within the material bin 3. A guide rod 12 is fixedly installed on the adjusting plate 4, and the guide rod 12 is slidably installed on the material bin 3. The telescopic member 11 can be one of a cylinder, a hydraulic cylinder, or an electric push rod. In this embodiment, a cylinder is preferred. The piston rod of the cylinder is fixedly connected to the adjusting plate 4. The extension and retraction of the piston rod of the cylinder can drive the adjusting plate 4 to slide horizontally within the material bin 3. The guide rod 12 is arranged parallel to the piston rod of the cylinder. The guide rod 12 can play a guiding role, enabling the adjusting plate 4 to slide in the horizontal direction. At the same time, it can also limit and fix the adjusting plate 4 to prevent the adjusting plate 4 from rotating out of position due to friction during the rotation of the rotating cylinder 2.

[0040] In one embodiment of the present invention, a door 13 is hinged to the side of the material bin 3 away from the rotating cylinder 2, and a telescopic member 11 is fixedly installed on the door 13. In this embodiment, the door 13 is made of a transparent material, such as an acrylic plastic sheet, to facilitate observation of the internal situation. The material bin 3 is used to convey and discharge materials into the rotating cylinder 2, and also to seal the chassis 1. When the door 13 is closed, the inside of the chassis 1 is sealed, thereby preventing material dust from leaking out of the chassis 1. When the door 13 is opened, it is convenient to inspect the inside of the chassis 1.

[0041] In one embodiment of the present invention, the power assembly includes a drive motor 14, which is a geared motor. The drive motor 14 is fixedly mounted on the housing 1, and its output shaft passes through the housing 1 and is fixedly connected to the rotating cylinder 2. In this embodiment, a bearing is provided between the output shaft of the drive motor 14 and the housing 1 to facilitate the rotation of the output shaft of the drive motor 14. The output shaft of the drive motor 14 passes through the side plate of the housing 1 and is fixedly connected to the mounting plate 6 of the rotating cylinder 2. The output shaft of the drive motor 14 and the rotating cylinder 2 are coaxially arranged, so the drive motor 14 can drive the rotating cylinder 2 to rotate inside the housing 1, thereby mixing the material inside the rotating cylinder 2.

[0042] In one embodiment of the present invention, a feed pipe 15 and a discharge pipe 16 are fixedly provided on the material bin 3. The feed pipe 15 is located at the upper end of the material bin 3, and one end of the feed pipe 15 extends into the rotating cylinder 2. The discharge pipe 16 is located at the lower end of the material bin 3 and is used for discharging materials. In this embodiment, the feed pipe 15 is fixedly installed on the material bin 3. The upper end of the feed pipe 15 extends to the outside of the material bin 3, and the lower end extends into the rotating cylinder 2. The part of the feed pipe 15 inside the material bin 3 is inclined and is inserted into the rotating cylinder 2 from the open end. The adjusting plate 4 is semi-circular. Therefore, after the adjusting plate 4 and the rotating cylinder 2 come into contact, the upper half of the open end of the rotating cylinder 2 is open. The feed pipe 15 is inserted from the open structure of the rotating cylinder 2. Therefore, the feed pipe 15 will not obstruct the movement of the adjusting plate 4, and the material is directly conveyed from the feed pipe 15 to the rotating cylinder 2 for material mixing. The discharge pipe 16 is located at the lower end of the material bin 3. After the material coating and mixing is completed, as the adjusting plate 4 separates from the rotating cylinder 2, the material is conveyed from the rotating cylinder 2 to the material bin 3 and discharged from the discharge pipe 16.

[0043] It should be noted that multiple spiral stirring blades 19 are fixedly arranged on the inner wall of the rotating cylinder 2 along the circumferential direction. When the material is coated and stirred, the stirring blades 19 can make the material mix more evenly. When the material is discharged, the drive motor 14 drives the rotating cylinder 2 to rotate in the opposite direction, and the stirring blades 19 can discharge the material in the rotating cylinder 2 to prevent the material from remaining in the rotating cylinder 2.

[0044] Furthermore, the lower end of the material bin 3 has a funnel-shaped structure, and the discharge pipe 16 is connected to the lowest point of the material bin 3. Therefore, during the discharge process, after the material falls from the rotating drum 2 into the material bin 3, the material can be completely discharged from the material bin 3, preventing material residue.

[0045] In one embodiment of the present invention, a spraying assembly is also provided, including a spraying pipe 17 disposed on the material hopper 3. One end of the spraying pipe 17 extends into the rotating cylinder 2, and a plurality of nozzles 18 are provided on the spraying pipe 17 for spraying aerosol into the rotating cylinder 2. The output ends of the nozzles 18 face downwards from the rotating cylinder 2. In this embodiment, since the adjusting plate 4 has a semi-circular structure, after the adjusting plate 4 abuts against the rotating cylinder 2, the spraying pipe 17 can extend into the rotating cylinder 2 from above the adjusting plate 4. During the rotation of the rotating cylinder 2, the aerosol in the spraying pipe 17 is sprayed out from the nozzles 18, which can coat the material in the rotating cylinder 2.

[0046] Furthermore, the chassis 1 is also equipped with an air inlet pipe 20 and an exhaust pipe 21, both of which are fitted with filter cotton for filtering air. In this embodiment, both the air inlet pipe 20 and the exhaust pipe 21 are located at the upper end of the chassis 1. The exhaust pipe 21 is used to discharge air from the chassis 1 and the rotating cylinder 2. The filter cotton in the exhaust pipe 21 can filter the air discharged from the chassis 1 and the rotating cylinder 2, preventing sprays or powders from entering the air and causing pollution. The air inlet pipe 20 is used to draw air from the outside into the chassis 1. The filter cotton in the air inlet pipe 20 is used to prevent dust and other impurities in the outside air from entering the chassis 1 and causing pollution to the materials. The air in the chassis 1 is circulated through the air inlet pipe 20 and the exhaust pipe 21, and the inside of the chassis 1 is kept in a slightly negative pressure state, preventing harmful substances from leaking out.

[0047] In one embodiment of the present invention, a hot air pipe 22 is also provided on the casing 1. The hot air pipe 22 extends into the casing 1 and is located below the rotating cylinder 2. The portion of the hot air pipe 22 inside the casing 1 has multiple air outlets, which are positioned facing one side of the rotating cylinder 2. The cylinder wall of the rotating cylinder 2 has multiple holes evenly distributed. The diameter of the holes is smaller than the diameter of the material inside the rotating cylinder 2, thereby preventing the material from falling out of the holes. In this embodiment, hot air is introduced into the hot air pipe 22. The hot air can be discharged from the air outlets and blown to one side of the rotating cylinder 2. The discharged hot air can heat the material inside the rotating cylinder 2, thereby accelerating the drying of the spray on the surface of the material and improving the coating efficiency.

[0048] refer to Figure 5 and Figure 6As shown, in another embodiment of the present invention, unlike the previous embodiment, a fixed frame 23 is fixedly installed on the material bin 3. The fixed frame 23 has an L-shaped structure, and the horizontal section of the fixed frame 23 extends into the interior of the rotating cylinder 2. An electric telescopic rod 24 is fixedly installed on the fixed frame 23. A movable plate 25 is fixedly connected to the movable end of the electric telescopic rod 24. The movable plate 25 is located below the fixed frame 23. The extension and retraction of the movable end of the electric telescopic rod 24 can drive the movable plate 25 to move downward or upward. The spray pipe 17 can be fixedly installed on the movable plate 25 by binding. The spray pipe 17 is provided with multiple nozzles 18 for spraying the rotating cylinder. The material inside the spray tube 17 is coated with an aerosol. The input end of the spray tube 17 is connected to a connecting hose 26, which is connected to an external medicine container for conveying the aerosol. The connecting hose 26 has a deformation effect, so the moving plate 25 can move up and down without restriction. In this embodiment, as the capacity of the rotating cylinder 2 is increased, the amount of material accumulated inside the rotating cylinder 2 increases, resulting in a higher accumulation height. Therefore, it is necessary to adjust the distance between the spray tube 17 and the material to achieve the optimal spraying height. In this embodiment, the distance between the spray tube 17 and the material can be adjusted by moving the spray tube 17 up and down with an electric telescopic rod 24.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coating machine capable of increasing capacity, characterized in that, Including the chassis (1); Rotating cylinder (2) is rotatably installed inside the casing (1) for coating materials; The material bin (3) is fixedly installed on the chassis (1) and located on one side of the opening end of the rotating cylinder (2); An adjusting plate (4) is provided inside the material bin (3) and can move closer to or further away from the rotating cylinder (2) inside the material bin (3); when the capacity of the rotating cylinder (2) increases, the adjusting plate (4) moves closer to the rotating cylinder (2) and abuts against the open end of the rotating cylinder (2); The power unit is mounted on the chassis (1) and is connected to the rotating cylinder (2) for driving the rotating cylinder (2) to rotate.

2. A coating machine capable of increasing capacity according to claim 1, characterized in that, The rotating cylinder (2) includes a cylinder body (5), one end of which is fixedly provided with an mounting plate (6), which is connected to the power assembly; the other end of the cylinder body (5) is an open end, and an mounting ring (7) is fixedly provided at the open end of the cylinder body (5), one end of which extends into the material bin (3). When the rotating cylinder (2) increases its capacity, the adjusting plate (4) abuts against the mounting ring (7).

3. A coating machine capable of increasing capacity according to claim 2, characterized in that, The adjusting plate (4) is fixedly provided with a slot (8) on the side near the rotating cylinder (2). The slot (8) is an arc-shaped structure. The shape of the slot (8) is adapted to the shape of the mounting ring (7). The mounting ring (7) can be locked in the slot (8).

4. A coating machine capable of increasing capacity according to claim 3, characterized in that, A compression strip (9) is slidably disposed in the slot (8), and a plurality of compression springs (10) are disposed between the compression strip (9) and the adjusting plate (4).

5. A coating machine capable of increasing capacity according to claim 1, characterized in that, A telescopic component (11) is fixedly installed on the side of the material bin (3) away from the rotating cylinder (2). The movable end of the telescopic component (11) is fixedly connected to the adjusting plate (4) to drive the adjusting plate (4) to move within the material bin (3).

6. A coating machine capable of increasing capacity according to claim 5, characterized in that, A guide rod (12) is fixedly installed on the adjusting plate (4), and the guide rod (12) is slidably installed on the material bin (3).

7. A coating machine capable of increasing capacity according to claim 5, characterized in that, The material silo (3) has a door (13) hinged on the side away from the rotating cylinder (2), and the telescopic component (11) is fixedly installed on the door (13).

8. A coating machine capable of increasing capacity according to claim 1, characterized in that, The power assembly includes a drive motor (14), which is fixedly mounted on the housing (1). The output shaft of the drive motor (14) passes through the housing (1) and is fixedly connected to the rotating cylinder (2).

9. A coating machine capable of increasing capacity according to claim 1, characterized in that, The material silo (3) is fixedly provided with a feed pipe (15) and a discharge pipe (16). The feed pipe (15) is located at the upper end of the material silo (3), and one end of the feed pipe (15) extends into the rotating cylinder (2). The discharge pipe (16) is located at the lower end of the material silo (3) and is used for discharging materials.

10. A coating machine capable of increasing capacity according to claim 1, characterized in that, A spraying assembly is also provided, which includes a spraying pipe (17) disposed on the material silo (3). One end of the spraying pipe (17) extends into the rotating cylinder (2). The spraying pipe (17) is provided with multiple nozzles (18) for spraying the spray agent into the rotating cylinder (2).

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