A high-efficiency sugar film coating machine for drug processing and coating method thereof

Abstract

This invention belongs to the field of drug coating technology and discloses a high-efficiency sugar-coating film coating machine and its coating method for drug processing. The machine includes a main body with a shell, six transfer mechanisms for moving the drug, and a coating mechanism for coating the drug. The invention employs a six-station transfer design, enabling simultaneous feeding, coating, discharging, and cleaning processes with seamless integration between them. Three independent coating stations perform layered coating of the drug. A hot air circulation system combined with the cartridge rotation function ensures uniform coating coverage for each drug, significantly improving product quality stability. The cleaning module automates the cleaning of the coating equipment. A dedicated cleaning station, combined with high-pressure water jet spray, thoroughly removes residual materials inside and outside the cartridge, and the closed-loop cleaning effectively prevents cross-contamination.

Description

Technical Field

[0001] This invention relates to the field of drug coating technology, and in particular to a high-efficiency sugar-coating film coating machine and coating method for drug processing. Background Technology

[0002] In the pharmaceutical industry, sugar coating is a crucial process in drug production, primarily used to improve drug taste, enhance stability, control release rates, and facilitate identification. Traditional sugar coating equipment mainly employs intermittent production methods, resulting in low production efficiency, poor coating uniformity, and low levels of automation. With the pharmaceutical industry's ever-increasing demands for product quality and production efficiency, existing coating equipment is no longer sufficient to meet the needs of modern pharmaceutical production.

[0003] Currently, sugar coating machines on the market generally suffer from the following technical defects: traditional equipment mostly adopts a single rotating pot design, which makes it easy for drugs to accumulate during the coating process, resulting in uneven coating. The feeding, coating, discharging and cleaning processes of existing equipment need to be carried out in separate steps, and the process conversion is time-consuming and labor-intensive, which seriously affects production efficiency. In order to address the above technical problems, it is urgent to develop a new type of high-efficiency sugar coating film coating machine. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency sugar-coating film coating machine and coating method for pharmaceutical processing, so as to solve the problems mentioned in the background art.

[0005] To address the aforementioned technical problems, the present invention adopts the following technical solution: a high-efficiency sugar coating film coating machine for pharmaceutical processing, comprising a main body, the main body including a shell, and six transfer mechanisms for driving the movement of drugs and one working mechanism for coating the drugs on the main body.

[0006] The main structure includes an internal bidirectional threaded cylinder fixedly installed inside the outer shell, a central gear rotatably installed on the outer shell, the center of the central gear slidingly installed on a central sliding shaft, a convex ball fixedly installed on the central sliding shaft, the convex ball sliding in the bidirectional internal thread of the internal bidirectional threaded cylinder, a rotating frame column rotatably installed outside the internal bidirectional threaded cylinder, a rotating frame fixedly installed on the rotating frame column, a sliding frame rotatably installed on the central sliding shaft, and an internal gear rotatably installed inside the outer shell.

[0007] The operating mechanism includes a feeding module, three coating modules, a discharging module, and a cleaning module.

[0008] Furthermore, the main structure also includes multiple guide posts fixedly installed on the outer casing, a sliding frame sliding along the guide posts, a motor fixedly installed on the outer casing, a continuous gear rotatably installed on the outer casing, the motor driving the continuous gear to rotate via belt drive, and the continuous gear driving the internal gear to rotate via belt drive.

[0009] Furthermore, a bidirectional lead screw and a rotating column are rotatably mounted on the outer casing, and a moving block is slidably mounted on the outer casing. The moving block and the bidirectional lead screw form a threaded transmission. A moving gear is slidably mounted on the rotating column. The continuous gear drives the rotating column to rotate through belt transmission, and the rotating column drives the bidirectional lead screw to rotate through gear transmission.

[0010] Furthermore, a rear docking gear and a front docking gear are rotatably mounted on the outer casing. The front docking gear drives the central gear to rotate via belt drive, and the rear docking gear drives the rotating frame column to rotate via belt drive.

[0011] Furthermore, the circulation mechanism includes a cartridge, a rotating gear, and a central rotating gear that are rotatably mounted on a rotating frame. The rotating gear is fixedly mounted at one end of the cartridge, and the rotating gear meshes with the central rotating gear. The central rotating gear meshes with the internal gear, and multiple holes are provided on the cartridge.

[0012] Furthermore, the operating mechanism includes a fan, a heating plate, and a sugar powder box that are fixedly installed on the outer casing. The heating plate is located below the fan, an air guide plate is installed inside the outer casing, and an exhaust fan is installed on the outer casing.

[0013] Furthermore, the coating module includes a sugar powder tube fixedly installed on the sugar powder box, a nozzle fixedly installed on the sugar powder tube, and the nozzle fixedly installed with a sliding frame. When the sliding frame moves to the innermost side, the nozzle is inserted into the corresponding cartridge.

[0014] Furthermore, the feeding module includes a feeding pipe fixedly installed on the outer casing, a push-in pipe and a push plate fixedly installed on the sliding frame, a docking push plate slidably installed inside the feeding pipe, a feeding hole opened on the docking push plate, a compression spring provided between the docking push plate and the feeding pipe, and a slope provided inside the push-in pipe. In the initial state, the docking push plate closes the bottom of the feeding pipe; the discharging module includes a discharging box fixedly installed on the sliding frame, with the opening of the discharging box facing upward.

[0015] Furthermore, the cleaning module includes a cleaning box fixedly installed on a sliding frame. The outer shell is provided with a water inlet and a water outlet. The water inlet is connected to an external water source. When the sliding frame moves to the innermost side, the cleaning box is fitted over the corresponding medicine cartridge.

[0016] A coating method for a high-efficiency sugar-coating film coating machine for pharmaceutical processing includes the following steps:

[0017] S1. The drug is fed into the transfer mechanism through the feeding module. The transfer mechanism rotates one-sixth of a revolution, carrying the drug to the next station.

[0018] S2. The drug is coated using three coating modules;

[0019] S3. The coated drug is removed through the discharge mechanism;

[0020] S4. The circulation module is cleaned by the cleaning module.

[0021] The advantages of this invention compared to the prior art are:

[0022] (1) The present invention adopts a six-station flow design, which realizes the synchronous operation of feeding, coating, discharging and cleaning processes, and achieves seamless connection between processes, eliminating the time waste of traditional equipment process conversion; (2) The present invention uses three independent coating stations to coat the drug in layers. By combining the hot air circulation system with the self-rotation function of the drug cartridge, it ensures that each drug can obtain uniform coating coverage and improves the stability of product quality; (3) The present invention realizes the automated cleaning of the coating equipment through the cleaning module. The dedicated cleaning station, combined with high-pressure water jet, thoroughly removes the residual materials inside and outside the drug cartridge, and the closed cleaning effectively prevents cross-contamination. Attached Figure Description

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

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 2 ;

[0027] Figure 5 This is a schematic diagram of the main structure of the present invention. Figure 3 ;

[0028] Figure 6 This is a schematic diagram of the main structure of the present invention. Figure 4 ;

[0029] Figure 7 This is a schematic diagram of the transfer mechanism in the present invention. Figure 1 ;

[0030] Figure 8 This is a schematic diagram of the transfer mechanism in the present invention. Figure 2 ;

[0031] Figure 9 This is a schematic diagram of the working mechanism in this invention;

[0032] Figure 10 This is a schematic diagram of the coating module in this invention;

[0033] Figure 11 This is a schematic diagram of the cleaning module in this invention;

[0034] Figure 12 This is a schematic diagram of the feeding module and the discharging module in this invention;

[0035] Figure 13 This is a schematic diagram of the feeding module in this invention.

[0036] Reference numerals: 101. Housing; 102. Motor; 103. Rotating column; 104. Double-acting lead screw; 105. Moving block; 106. Moving gear; 107. Rear mating gear; 108. Front mating gear; 109. Center gear; 110. Center sliding shaft; 111. Continuous gear; 112. Internal gear; 113. Rotating frame column; 114. Rotating frame; 115. Convex ball; 116. Internal double-acting threaded cylinder; 117. Sliding frame; 118. Guide Column; 201, cartridge case; 202, rotating gear; 203, intermediate gear; 301, fan; 302, heating plate; 303, exhaust fan; 304, sugar powder box; 305, sugar powder tube; 306, nozzle; 307, cleaning box; 308, water inlet; 309, water outlet; 310, discharge box; 311, push tube; 312, push plate; 313, feed tube; 314, connecting push plate; 315, compression spring; 316, air guide plate. Detailed Implementation

[0037] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0038] Example: Reference Figures 1-13 A high-efficiency sugar coating film coating machine for pharmaceutical processing includes a main body, which includes a shell 101. The main body is equipped with six transfer mechanisms for moving the drug and an operating mechanism for coating the drug.

[0039] The main structure includes an internal bidirectional threaded cylinder 116 fixedly installed inside the outer casing 101, a central gear 109 rotatably installed on the outer casing 101, the center of the central gear 109 being slidably installed on a central sliding shaft 110, a convex ball 115 fixedly installed on the central sliding shaft 110, the convex ball 115 sliding in the bidirectional internal thread of the internal bidirectional threaded cylinder 116, a rotating frame column 113 rotatably installed outside the internal bidirectional threaded cylinder 116, a rotating frame 114 fixedly installed on the rotating frame column 113, a sliding frame 117 rotatably installed on the central sliding shaft 110, and an internal gear 112 rotatably installed inside the outer casing 101.

[0040] The operating mechanism includes a feeding module, three coating modules, a discharging module, and a cleaning module.

[0041] like Figures 3-6As shown, the main body also includes multiple guide posts 118 fixedly installed on the outer shell 101, a sliding frame 117 sliding along the guide posts 118, a motor 102 fixedly installed on the outer shell 101, a continuous gear 111 rotatably installed on the outer shell 101, the motor 102 drives the continuous gear 111 to rotate through belt drive, and the continuous gear 111 drives the internal gear 112 to rotate through belt drive.

[0042] like Figures 3-6 As shown, a bidirectional lead screw 104 and a rotating column 103 are rotatably mounted on the outer casing 101. A moving block 105 is slidably mounted on the outer casing 101. The moving block 105 and the bidirectional lead screw 104 form a threaded transmission. A moving gear 106 is slidably mounted on the rotating column 103. The continuous gear 111 drives the rotating column 103 to rotate through a belt drive. The rotating column 103 drives the bidirectional lead screw 104 to rotate through a gear transmission.

[0043] like Figures 3-6 As shown, a rear docking gear 107 and a front docking gear 108 are rotatably mounted on the outer casing 101. The front docking gear 108 drives the central gear 109 to rotate via a belt drive, and the rear docking gear 107 drives the rotating frame column 113 to rotate via a belt drive.

[0044] Motor 102 drives continuous gear 111 to rotate via transmission belt. Continuous gear 111 drives internal gear 112 to rotate via transmission belt. Continuous gear 111 drives rotating column 103 to rotate via transmission belt. Rotating column 103 drives bidirectional lead screw 104 to rotate via gear transmission. The rotation of bidirectional lead screw 104 causes moving block 105 to slide along housing 101. Moving block 105, along with moving gear 106, slides along rotating column 103. Rotating column 103 drives moving gear 106 to rotate. Moving gear 106 moves towards the front mating gear 108. When moving block 105 drives moving gear 106... When gear 106 reaches the front mating gear 108, the moving gear 106 drives the front mating gear 108 to rotate. The front mating gear 108 drives the central gear 109 to rotate via belt drive. The central gear 109 drives the central sliding shaft 110 to rotate. The central sliding shaft 110 undergoes helical motion under the bidirectional internal thread engagement of the convex ball 115 and the internal bidirectional threaded cylinder 116, thereby driving the sliding frame 117 to slide along the guide post 118 toward the outer shell 101. When the moving gear 106 continues to move along the rotating post 103, the moving gear 106 will disengage from the front mating gear 108. When the sliding frame 117 reaches its innermost position, loading, coating, unloading, and cleaning of the cartridge 201 are performed. Under the action of the bidirectional external thread of the double-acting screw 104, the moving block 105 moves to its limit position and then begins to move in the opposite direction. Subsequently, the moving gear 106 meshes with the front mating gear 108 again. At this time, the front mating gear 108 drives the continuous gear 111 to rotate, thereby causing the sliding frame 117 to move away from the outer casing 101. When the moving gear 106 disengages from the front mating gear 108, the sliding frame 117 moves to its outermost position, and then the moving block... 105 continues to move with the moving gear 106. When the moving gear 106 meshes with the rear docking gear 107, the moving gear 106 drives the rear docking gear 107 to rotate. The rear docking gear 107 drives the rotating frame column 113 and the rotating frame 114 to rotate via belt drive. When the moving block 105 and the moving gear 106 move to their limit positions, they begin to move in the opposite direction. When the moving gear 106 disengages from the rear docking gear 107, the rotating frame 114 has rotated exactly one-sixth of a turn. Then the moving block 105 continues to move with the moving gear 106 toward the front docking gear 108, and so on.

[0045] like Figure 7 , Figure 8 As shown, the circulation mechanism includes a cartridge 201, a rotating gear 202, and a central gear 203 rotatably mounted on a rotating frame 114. The rotating gear 202 is fixedly mounted on one end of the cartridge 201. The rotating gear 202 meshes with the central gear 203, and the central gear 203 meshes with the internal gear 112. Multiple holes are provided on the cartridge 201.

[0046] The rotating frame 114 rotates one-sixth of a revolution each time, causing the cartridge 201 to switch between various workstations. The internal gear 112 rotates, driving the central rotating gear 203 to rotate, which in turn drives the cartridge 201 to rotate through the self-rotating gear 202.

[0047] like Figures 9-13 As shown, the working mechanism includes a fan 301, a heating plate 302 and a sugar powder box 304 fixedly installed on the outer casing 101. The heating plate 302 is located below the fan 301. An air guide plate 316 is installed inside the outer casing 101, and an exhaust fan 303 is provided on the outer casing 101.

[0048] like Figures 9-13 As shown, the coating module includes a sugar powder tube 305 fixedly installed on the sugar powder box 304, a nozzle 306 fixedly installed on the sugar powder tube 305, and the nozzle 306 fixedly installed on the sliding frame 117. When the sliding frame 117 moves to the innermost side, the nozzle 306 is inserted into the corresponding cartridge 201.

[0049] like Figures 9-13 As shown, the feeding module includes a feeding pipe 313 fixedly installed on the outer casing 101, a push-in pipe 311 and a push plate 312 fixedly installed on the sliding frame 117, a docking push plate 314 slidably installed inside the feeding pipe 313, a feeding hole provided on the docking push plate 314, a compression spring 315 provided between the docking push plate 314 and the feeding pipe 313, and a slope provided inside the push-in pipe 311. In the initial state, the docking push plate 314 closes the bottom of the feeding pipe 313. The discharging module includes a discharging box 310 fixedly installed on the sliding frame 117, with the opening of the discharging box 310 facing upward.

[0050] like Figures 9-13 As shown, the cleaning module includes a cleaning box 307 fixedly installed on the sliding frame 117. The outer shell 101 is provided with a water inlet 308 and a water outlet 309. The water inlet 308 is connected to an external water source. When the sliding frame 117 moves to the innermost side, the cleaning box 307 is fitted onto the outside of the corresponding medicine cartridge 201.

[0051] When the sliding frame 117 moves to its innermost position, the three nozzles 306 are inserted into the corresponding cartridges 201, the cleaning box 307 is inserted into the outer side of the outward-facing cartridges 201 and encloses the cartridges 201, and the discharge box 310 is inserted into the corresponding cartridges 201. When the sliding frame 117 moves inward, the push plate 312 pushes the docking push plate 314 to slide inside the feed pipe 313, the compression spring 315 is compressed, and the medicine placed in the feed pipe 313 falls into the push-in pipe 311 through the feed hole on the docking push plate 314. The sliding frame 117 pushes the push-in pipe 311 to dock with the cartridges 201, and the medicine slides into the cartridges 201 along the slope of the push-in pipe 311. The medicine is then transported through the sugar powder box 304, the sugar powder pipe 305, and the nozzles. Sugar powder is sprayed into three cartridges 201 by 306 and blown out by fan 301. After being heated by heating plate 302, the hot air is guided by air guide plate 316 and blown into the three cartridges 201 that are undergoing coating by exhaust fan 303. With the rotation of cartridge 201, the hot air melts the sugar powder onto the medicine, completing the coating. After the medicine passes through three layers of coating, it reaches discharge box 310. The cartridge 201 rotates and drops the coated medicine into discharge box 310. When the subsequent sliding frame 117 moves to the outermost position, the medicine in discharge box 310 is manually removed. Water enters through water inlet 308 and the water flow washes the cartridges 201 in cleaning box 307. The washed water is discharged from water outlet 309.

[0052] When the sliding frame 117 moves to the innermost side, the rotating frame 114 does not rotate. The drug enters the cartridge 201 through the feeding module. The three coating modules coat the drug. The discharging module removes the coated drug. The cleaning module cleans the cartridge 201 that has just been discharged. Then the sliding frame 117 moves to the outermost side, and the rotating frame 114 still does not rotate. Then the rotating frame 114 rotates one-sixth of a turn, and the sliding frame 117 does not move, causing all the cartridges 201 to rotate one-sixth of a turn and enter the next station. This process is repeated.

[0053] like Figures 1-13 As shown, a coating method using a high-efficiency sugar-coating film coating machine for pharmaceutical processing includes the following steps:

[0054] S1. The drug is fed into the transfer mechanism through the feeding module. The transfer mechanism rotates one-sixth of a revolution, carrying the drug to the next station.

[0055] S2. The drug is coated using three coating modules;

[0056] S3. The coated drug is removed through the discharge mechanism;

[0057] S4. The circulation module is cleaned by the cleaning module.

[0058] The working principle of the high-efficiency sugar coating film coating machine for pharmaceutical processing disclosed in this invention is as follows:

[0059] Motor 102 drives continuous gear 111 to rotate via a transmission belt. Continuous gear 111 drives internal gear 112 to rotate via a transmission belt. Continuous gear 111 drives rotating column 103 to rotate via a transmission belt. Rotating column 103 drives double-acting screw 104 to rotate via gear transmission. The rotation of double-acting screw 104 causes moving block 105 to slide along housing 101. Moving block 105, carrying moving gear 106, slides along rotating column 103. Rotating column 103 drives moving gear 106 to rotate. Moving gear 106 moves towards front mating gear 108. When moving block 105 carrying moving gear 106 reaches front mating gear 108, the moving... Gear 106 drives the front mating gear 108 to rotate, and the front mating gear 108 drives the central gear 109 to rotate via belt drive. The central gear 109 drives the central sliding shaft 110 to rotate. The central sliding shaft 110 performs a spiral motion under the bidirectional internal thread engagement of the convex ball 115 and the internal bidirectional threaded cylinder 116, thereby driving the sliding frame 117 to slide along the guide post 118 toward the outer shell 101. When the moving gear 106 continues to move along the rotating post 103, the moving gear 106 disengages from the front mating gear 108. At this time, the sliding frame 117 just moves to the innermost side, performing drug loading, coating, unloading, and cleaning of the cartridge 201. When the moving frame 117 moves to its innermost position, the three nozzles 306 are inserted into the corresponding cartridges 201, the cleaning box 307 is inserted into the outer side of the outward-facing cartridge 201 and encloses the cartridge 201 within it, and the discharge box 310 is inserted into the corresponding cartridge 201. When the sliding frame 117 moves inward, the push plate 312 pushes the docking push plate 314 to slide within the feed pipe 313, the compression spring 315 is compressed, and the medicine placed in the feed pipe 313 falls into the push-in pipe 311 through the feed hole on the docking push plate 314. The sliding frame 117 pushes the push-in pipe 311 to dock with the cartridge 201, and the medicine slides onto the cartridge 201 along the slope of the push-in pipe 311. In step 1, sugar powder is sprayed into three cartridges 201 through a sugar powder box 304, a sugar powder tube 305, and a nozzle 306. The hot air is then blown out by a fan 301, heated by a heating plate 302, and guided by a guide plate 316 and combined with the exhaust fan 303 to blow hot air into the three cartridges 201 that are undergoing coating. With the rotation of the cartridges 201, the hot air melts the sugar powder onto the medicine, completing the coating. After the medicine has undergone three layers of coating, it reaches the discharge box 310. The cartridges 201 rotate, causing the coated medicine to fall into the discharge box 310. When the subsequent sliding frame 117 moves to the outermost position, the medicine in the discharge box 310 is manually removed.Water enters through inlet 308, and the water flow rinses the cartridge 201 inside the cleaning box 307. The rinsed water is discharged from outlet 309. Under the action of the bidirectional external thread on the bidirectional lead screw 104, when the moving block 105 moves to its limit position, it begins to move in the opposite direction. The moving gear 106 meshes with the front docking gear 108 again. The front docking gear 108 drives the continuous gear 111 to rotate, causing the sliding frame 117 to move away from the outer shell 101. When the moving gear 106 disengages from the front docking gear 108, the sliding frame 117 moves to its outermost position. Then, the moving block 105 continues to move with the moving gear 106. When the moving gear 106 meshes with the rear docking gear 107... At this time, the moving gear 106 drives the rear docking gear 107 to rotate. The rear docking gear 107 drives the rotating frame column 113 and the rotating frame 114 to rotate via belt drive. When the moving block 105 and the moving gear 106 reach their limit positions, they begin to move in the opposite direction. When the moving gear 106 disengages from the rear docking gear 107, the rotating frame 114 has rotated exactly one-sixth of a revolution. Each time the rotating frame 114 rotates one-sixth of a revolution, the cartridge 201 switches between various positions. The internal gear 112 rotates, driving the intermediate rotating gear 203 to rotate, which in turn drives the cartridge 201 to rotate via the self-rotating gear 202. Then, the moving block 105 continues to move the moving gear 106 towards the front docking gear 108, and so on.

[0060] When the sliding frame 117 moves to the innermost side, the rotating frame 114 does not rotate. The drug enters the cartridge 201 through the feeding module. The three coating modules coat the drug. The discharging module removes the coated drug. The cleaning module cleans the cartridge 201 that has just been discharged. Then the sliding frame 117 moves to the outermost side, and the rotating frame 114 still does not rotate. Then the rotating frame 114 rotates one-sixth of a turn, and the sliding frame 117 does not move, causing all the cartridges 201 to rotate one-sixth of a turn and enter the next station. This process is repeated.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency sugar-coating film coating machine for pharmaceutical processing, comprising a main body, characterized in that: The main body includes an outer shell (101), and the main body is equipped with six circulation mechanisms for moving the drug and an operation mechanism for coating the drug. The main structure includes an internal bidirectional threaded cylinder (116) fixedly installed inside the outer shell (101), a central gear (109) rotatably installed on the outer shell (101), the center of the central gear (109) is slidably installed on the central sliding shaft (110), a convex ball (115) is fixedly installed on the central sliding shaft (110), the convex ball (115) slides in the bidirectional internal thread of the internal bidirectional threaded cylinder (116), a rotating frame column (113) is rotatably installed outside the internal bidirectional threaded cylinder (116), a rotating frame (114) is fixedly installed on the rotating frame column (113), a sliding frame (117) is rotatably installed on the central sliding shaft (110), and an internal gear (112) is rotatably installed inside the outer shell (101). The operating mechanism includes a feeding module, three coating modules, a discharging module, and a cleaning module; The main structure also includes multiple guide posts (118) fixedly installed on the outer shell (101), a sliding frame (117) sliding along the guide posts (118), a motor (102) fixedly installed on the outer shell (101), a continuous gear (111) rotatably installed on the outer shell (101), the motor (102) drives the continuous gear (111) to rotate through belt drive, and the continuous gear (111) drives the internal gear (112) to rotate through belt drive; A double-acting lead screw (104) and a rotating column (103) are rotatably mounted on the outer casing (101). A moving block (105) is slidably mounted on the outer casing (101). The moving block (105) and the double-acting lead screw (104) form a threaded transmission. A moving gear (106) is slidably mounted on the rotating column (103). A continuous gear (111) drives the rotating column (103) to rotate through a belt drive. The rotating column (103) drives the double-acting lead screw (104) to rotate through a gear drive. A rear docking gear (107) and a front docking gear (108) are rotatably mounted on the outer casing (101). The front docking gear (108) drives the center gear (109) to rotate via belt drive, and the rear docking gear (107) drives the rotating frame column (113) to rotate via belt drive.

2. The high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 1, characterized in that: The circulation mechanism includes a cartridge (201), a rotating gear (202), and a central gear (203) rotatably mounted on a rotating frame (114). The rotating gear (202) is fixedly mounted on one end of the cartridge (201). The rotating gear (202) meshes with the central gear (203), and the central gear (203) meshes with the internal gear (112). Multiple holes are provided on the cartridge (201).

3. The high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 1, characterized in that: The operating mechanism includes a fan (301), a heating plate (302) and a sugar powder box (304) fixedly installed on the outer casing (101). The heating plate (302) is located below the fan (301). A guide plate (316) is installed inside the outer casing (101), and an exhaust fan (303) is installed on the outer casing (101).

4. The high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 3, characterized in that: The coating module includes a sugar powder tube (305) fixedly installed on the sugar powder box (304), a nozzle (306) fixedly installed on the sugar powder tube (305), and the nozzle (306) is fixedly installed with the sliding frame (117). When the sliding frame (117) moves to the innermost side, the nozzle (306) is inserted into the corresponding cartridge (201).

5. The high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 4, characterized in that: The feeding module includes a feeding pipe (313) fixedly installed on the outer shell (101), a push-in pipe (311) and a push plate (312) fixedly installed on the sliding frame (117), a docking push plate (314) slidably installed inside the feeding pipe (313), a feeding hole is provided on the docking push plate (314), a compression spring (315) is provided between the docking push plate (314) and the feeding pipe (313), and a slope is provided inside the push-in pipe (311). In the initial state, the docking push plate (314) closes the bottom of the feeding pipe (313); the discharging module includes a discharging box (310) fixedly installed on the sliding frame (117), and the opening of the discharging box (310) faces upward.

6. The high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 5, characterized in that: The cleaning module includes a cleaning box (307) fixedly installed on a sliding frame (117). The outer shell (101) is provided with an inlet (308) and an outlet (309). The inlet (308) is connected to an external water source. When the sliding frame (117) moves to the innermost side, the cleaning box (307) is fitted onto the outside of the corresponding cartridge (201).

7. The coating method of a high-efficiency sugar coating film coating machine for pharmaceutical processing according to claim 1, characterized in that, The steps are as follows: S1. The drug is fed into the transfer mechanism through the feeding module. The transfer mechanism rotates one-sixth of a revolution, carrying the drug to the next station. S2. The drug is coated using three coating modules; S3. The coated drug is removed through the discharge mechanism; S4. The circulation module is cleaned by the cleaning module.

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