Rotary tablet press

Abstract

The utility model relates to the technical field of tablet presses, and discloses a rotary tablet press which comprises a collecting cabinet, a cabinet door is hinged to the end of the collecting cabinet, a working box is fixedly connected to the upper surface of the collecting cabinet, a control panel is fixedly connected to the side wall of the working box, a tablet pressing mechanism is arranged in the working box, and the control panel is fixedly connected to the side wall of the working box. A supporting frame is fixedly connected to the upper surface of the working box, and a stirring mechanism is arranged on the supporting frame. According to the rotary tablet press, the stirring mechanism is arranged and matched with rotation of a motor and cooperation of a sun gear and a planet gear, a main transmission shaft, an auxiliary transmission shaft, stirring blades fixedly connected with the main transmission shaft and a connecting plate can be effectively driven to fully stir caked medicine powder, the caked medicine powder can be crushed, meanwhile, stirring rods and a screen mesh are matched, and the stirring efficiency is improved. The medicine powder entering the tabletting mechanism can be more uniform, so that the working efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of tablet press technology, specifically a rotary tablet press. Background Technology

[0002] Currently, the most common machine for processing pharmaceutical powder into tablets is the rotary tablet press. The rotary tablet press consists of multiple sets of punches evenly distributed on a turntable that move in a circular motion along a certain trajectory, pressing granular materials into tablets through pressure rollers.

[0003] According to a rotary tablet press disclosed in the public notice (Announcement No.: CN 211616748 U), the above application can make the powder slide more smoothly. Secondly, by replacing the bushing on the outer side of the eccentric shaft with a bearing, the stability of the eccentric shaft can be improved, resulting in more stable hardness and better quality of the pressed tablets.

[0004] However, in actual use, the powder tends to clump together when added to the feed hopper, making it difficult to fall. Furthermore, the connection between the wheel axle and the bushing experiences significant wear, resulting in poor product quality. The vibration mechanism alone cannot effectively break up the clumps of powder, thus affecting production efficiency. Therefore, we propose a rotary tablet press. Utility Model Content

[0005] The purpose of this invention is to provide a rotary tablet press to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A rotary tablet press includes a collection cabinet, a cabinet door hinged to the end of the collection cabinet, a working box fixedly connected to the upper surface of the collection cabinet, a control panel fixedly connected to the side wall of the working box, a tablet pressing mechanism disposed inside the working box, a support frame fixedly connected to the upper surface of the working box, and a stirring mechanism disposed on the support frame, the stirring mechanism comprising:

[0007] A mixing drum is fixedly connected to the upper surface of a support frame. A motor is fixedly connected to the upper surface of the mixing drum. A feed inlet is provided on the side wall of the mixing drum. A conveying pipe is fixedly connected to the lower surface of the mixing drum. A protective disc is rotatably connected to the upper inner surface of the mixing drum. A main drive shaft is fixedly connected to the output end of the motor. The main drive shaft passes through and is movably connected to the center of the protective disc. A sun gear is fixedly connected to the outer surface of the main drive shaft. Planet gears mesh with the outer surface of the sun gear.

[0008] A gear ring, the outer surface of which meshes with the inner surface of the planetary gear, the sidewall of which is fixedly connected to the inner sidewall of the protective disc, a secondary drive shaft passing through and fixedly connected to the axis of the planetary gear, a connecting plate fixedly connected to the outer surface of the secondary drive shaft, a stirring blade fixedly connected to the outer surface of the main drive shaft, and a stirring rod fixedly connected to the outer surface of the main drive shaft.

[0009] Preferably, the bottom surface of the connecting plate is provided with an auxiliary mechanism, the auxiliary mechanism including a fixed shaft, the bottom surface of the connecting plate is fixedly connected to the fixed shaft, one end of the spiral spring is fixedly connected to the outer wall of the fixed shaft, the other end of the spiral spring is fixedly connected to a rotating cylinder, the outer surface of the rotating cylinder is fixedly connected to a stirring plate, and the end of the stirring plate away from the fixed shaft is fixedly connected to a silicone strip.

[0010] Preferably, the protective disk is hollow, and the sun gear, planet gears, and gear ring are disposed inside the protective disk.

[0011] Preferably, the number of the auxiliary drive shafts and connecting plates is set in multiple groups, and each group of auxiliary drive shafts and connecting plates is distributed in a circumferential array on the bottom surface of the planetary gear.

[0012] Preferably, the auxiliary mechanism is provided in multiple groups, and each group of auxiliary mechanisms is distributed in a mirror-symmetrical manner at both ends of the connecting plate.

[0013] Preferably, a screen is fixedly connected to the inner surface of the conveying pipe.

[0014] Preferably, the lower surface of the protective plate has a through hole, and the size of the through hole matches the size of the auxiliary drive shaft.

[0015] Compared with the prior art, this utility model provides a rotary tablet press, which has the following advantages:

[0016] 1. This rotary tablet press, equipped with a stirring mechanism, works in conjunction with the rotation of the motor and the cooperation of the sun gear and planetary gears to effectively drive the main drive shaft, the auxiliary drive shaft, and the stirring blades and connecting plates fixedly connected to them to fully stir the clumps of medicine powder. This can break up the clumps of medicine powder. At the same time, in conjunction with the stirring rod and the screen, the medicine powder entering the tableting mechanism can be more uniform, thereby improving the working efficiency of this equipment.

[0017] 2. This rotary tablet press, through the arrangement of the stirring plate and silicone strip, combined with the rotation of the spiral spring, can scrape off the powder adhering to the inner wall of the stirring drum due to static electricity or moisture, thereby achieving self-cleaning of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the stirring mechanism of this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the stirring mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the drive shaft of the structural pair of this utility model;

[0022] Figure 5 This is a schematic diagram of the auxiliary structure of this utility model.

[0023] In the diagram: 1. Collection cabinet; 11. Working box; 12. Cabinet door; 13. Control panel; 14. Support frame; 2. Tableting mechanism; 3. Stirring mechanism; 31. Stirring drum; 32. Motor; 33. Feed inlet; 34. Conveying pipe; 35. Main drive shaft; 36. Sun gear; 37. Planetary gear; 38. Gear ring; 39. Secondary drive shaft; 310. Connecting plate; 311. Stirring blade; 312. Stirring rod; 313. Protective disc; 4. Auxiliary mechanism; 41. Fixed shaft; 42. Scroll spring; 43. Stirring plate; 44. Silicone strip; 45. Rotary drum. Detailed Implementation

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a rotary tablet press, including a collection cabinet 1, with a cabinet door 12 hinged to the end of the collection cabinet 1, a working box 11 fixedly connected to the upper surface of the collection cabinet 1, a control plate 13 fixedly connected to the side wall of the working box 11, a tablet pressing mechanism 2 arranged inside the working box 11, a support frame 14 fixedly connected to the upper surface of the working box 11, and a stirring mechanism 3 arranged on the support frame 14. The stirring mechanism 3 includes: a stirring cylinder 31, a motor 32, a feed inlet 33, a conveying pipe 34, a main drive shaft 35, a sun gear 36, a planetary gear 37, a gear ring 38, a secondary drive shaft 39, a connecting plate 310, a stirring blade 311, a stirring rod 312, and a protective disc 313.

[0025] In one embodiment of this utility model, the stirring drum 31 is fixedly connected to the upper surface of the support frame 14, and a motor 32 is fixedly connected to the upper surface of the stirring drum 31. A feed inlet 33 is provided on the side wall of the stirring drum 31, and a conveying pipe 34 is fixedly connected to the lower surface of the stirring drum 31. A protective disc 313 is rotatably connected to the inner upper surface of the stirring drum 31. The output end of the motor 32 is fixedly connected to a main drive shaft 35. The main drive shaft 35 is movably connected through the center of the protective disc 313. A sun gear 36 is fixedly connected to the outer surface of the main drive shaft 35, and planetary gears 37 mesh with the outer surface of the sun gear 36. By providing planetary gears, the auxiliary drive shaft 39 of this stirring mechanism 3 can rotate around the main drive shaft 35. The gear ring 38 revolves around the main drive shaft 35 without affecting its own rotation. The outer surface of the gear ring 38 meshes with the inner surface of the planetary gear 37. The side wall of the gear ring 38 is fixedly connected to the inner side wall of the protective disc 313. The auxiliary drive shaft 39 is fixedly connected through the axis of the planetary gear 37. The outer surface of the auxiliary drive shaft 39 is fixedly connected to the connecting plate 310. The outer surface of the main drive shaft 35 is fixedly connected to the stirring blade 311. The outer surface of the main drive shaft 35 is fixedly connected to the stirring rod 312. By limiting the displacement of the planetary gear 37 through the gear ring 38, the auxiliary drive shaft 39 can rotate inside the stirring drum 31, which can maximize the stirring of the powder in the stirring drum 31 and improve the working efficiency of the equipment.

[0026] In addition, an auxiliary mechanism 4 is provided on the bottom surface of the connecting plate 310. The auxiliary mechanism 4 includes a fixed shaft 41. The fixed shaft 41 is fixedly connected to the bottom surface of the connecting plate 310. One end of a spiral spring 42 is fixedly connected to the outer wall of the fixed shaft 41. The other end of the spiral spring 42 is fixedly connected to a rotating drum 45. A stirring plate 43 is fixedly connected to the outer wall of the rotating drum 45. A silicone strip 44 is fixedly connected to the end of the stirring plate 43 away from the fixed shaft 41. By providing the silicone strip 44, the auxiliary mechanism 4 can scrape the inner wall of the stirring drum 31. To improve the self-cleaning ability of this equipment, the protective disc 313 is designed to be hollow, and the sun gear 36, planet gears 37, and gear ring 38 are located inside the protective disc 313. By setting the protective disc, it is possible to ensure that the powder does not enter the planet gears during normal operation, thereby affecting the normal operation of this equipment. At the same time, there are multiple sets of auxiliary drive shafts 39 and connecting plates 310, and each set of auxiliary drive shafts 39 and connecting plates 310 is arranged in a circumferential array on the bottom surface of the planet gears 37.

[0027] In this embodiment of the utility model, multiple sets of auxiliary mechanisms 4 are provided, and each set of auxiliary mechanisms 4 is distributed in a mirror symmetrical manner at both ends of the connecting plate 310. By providing multiple sets of auxiliary mechanisms 4, the silicone strip 44 can better scrape the inner wall of the stirring cylinder 31. At the same time, with the help of the spiral spring 42, the stirring cylinder 31 can be continuously scraped. At this time, a screen is fixedly connected to the inner surface of the conveying pipe 34, which can better ensure that the powder entering the tableting mechanism 2 has better uniformity, so as to make the tableting effect better. The lower surface of the protective plate 313 is provided with a through hole, and the size of the through hole matches the size of the auxiliary drive shaft 39.

[0028] In this invention, during use, the powder is fed into the mixing drum 31 through the feed inlet 33. Then, the motor 32 is started, driving the main drive shaft 35 to rotate the sun gear 36, the stirring blade 311, and the stirring rod 312. The sun gear 36 forms a planetary transmission with the fixed gear ring 38 through the meshing planet gear 37, causing the auxiliary drive shaft 39 to revolve around the main drive shaft 35 and rotate on its own axis. This drives the connecting plate 310 and the stirring plate 43 of the auxiliary mechanism 4 to agitate the powder in multiple directions under the elastic support of the spiral spring 42. The silicone strip 44 flexibly scrapes the drum wall to prevent clumping. The uniformly mixed material is filtered through the screen in the conveying pipe 34 and then enters the tableting mechanism 2. After tableting, the finished product falls into the collection cabinet 1. Finally, the entire process is controlled by the control board 13.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A rotary tablet press, comprising a collection cabinet (1), wherein a cabinet door (12) is hinged to the end of the collection cabinet (1), a working box (11) is fixedly connected to the upper surface of the collection cabinet (1), a control panel (13) is fixedly connected to the side wall of the working box (11), a tablet pressing mechanism (2) is provided inside the working box (11), and a support frame (14) is fixedly connected to the upper surface of the working box (11), characterized in that: The support frame (14) is provided with a stirring mechanism (3), which includes: A mixing drum (31) is fixedly connected to the upper surface of a support frame (14). A motor (32) is fixedly connected to the upper surface of the mixing drum (31). A feed inlet (33) is opened on the side wall of the mixing drum (31). A conveying pipe (34) is fixedly connected to the lower surface of the mixing drum (31). A protective disc (313) is rotatably connected to the upper surface inside the mixing drum (31). A main drive shaft (35) is fixedly connected to the output end of the motor (32). The main drive shaft (35) passes through and is movably connected to the center of the protective disc (313). A sun gear (36) is fixedly connected to the outer surface of the main drive shaft (35). A planet gear (37) meshes with the outer surface of the sun gear (36). A gear ring (38) has its outer surface meshing with the inner surface of a planetary gear (37). The sidewall of the gear ring (38) is fixedly connected to the inner sidewall of a protective disc (313). A secondary drive shaft (39) is fixedly connected through and fixedly connected to the axis of the planetary gear (37). A connecting plate (310) is fixedly connected to the outer surface of the secondary drive shaft (39). A stirring blade (311) is fixedly connected to the outer surface of the main drive shaft (35). A stirring rod (312) is fixedly connected to the outer surface of the main drive shaft (35).

2. The rotary tablet press according to claim 1, characterized in that: The bottom surface of the connecting plate (310) is provided with an auxiliary mechanism (4). The auxiliary mechanism (4) includes a fixed shaft (41). The bottom surface of the connecting plate (310) is fixedly connected to the fixed shaft (41). One end of the spiral spring (42) is fixedly connected to the outer wall of the fixed shaft (41). The other end of the spiral spring (42) is fixedly connected to a rotating cylinder (45). The outer wall of the rotating cylinder (45) is fixedly connected to a stirring plate (43). The end of the stirring plate (43) away from the fixed shaft (41) is fixedly connected to a silicone strip (44).

3. A rotary tablet press according to claim 1, characterized in that: The protective disk (313) is hollow, and the sun gear (36), planet gear (37), and gear ring (38) are located inside the protective disk (313).

4. A rotary tablet press according to claim 1, characterized in that: The number of the auxiliary drive shafts (39) and connecting plates (310) is arranged in multiple sets, and each set of auxiliary drive shafts (39) and connecting plates (310) is arranged in a circular array on the bottom surface of the planetary gear (37).

5. A rotary tablet press according to claim 2, characterized in that: The auxiliary mechanism (4) is provided in multiple sets, and each set of the auxiliary mechanism (4) is distributed in a mirror symmetrical manner at both ends of the connecting plate (310).

6. A rotary tablet press according to claim 1, characterized in that: A screen is fixedly connected to the inner surface of the conveying pipe (34).

7. A rotary tablet press according to claim 1, characterized in that: The lower surface of the protective disc (313) is provided with a through hole, and the size of the through hole matches the size of the auxiliary drive shaft (39).

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