A tablet rotary press
By designing a vibration motor and a cover plate cleaning column, the problems of tablet fragility and residual powder in the mold are solved, achieving tablet firmness and automatic cleaning, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-07-07
AI Technical Summary
Existing rotary tablet presses are prone to causing brittle holes due to excessive voids in the raw drug during tableting, and also result in a large amount of residual drug powder in the mold, affecting tablet quality and production efficiency.
The use of a vibration motor reduces the gaps between powder particles, and the combination of a cover plate and a cleaning column design enables self-cleaning and collection functions, reducing dust and improving tablet firmness.
High-frequency vibration reduces powder voids, enhances tablet firmness, and enables automatic cleaning and powder recovery, thereby reducing production costs.
Smart Images
Figure CN224465346U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the pharmaceutical field, specifically, it relates to a rotary tablet press. Background Technology
[0002] Tablets are solid dosage forms made by pressing or coating active pharmaceutical ingredients and excipients. They have advantages such as precise dosage, high stability, portability, and low production cost.
[0003] The prior art (publication number: CN220409746U) discloses a rotary tablet press, including an operating table, an installation ring fixedly installed on the upper part of the operating table, a turntable rotatably installed on one side of the installation ring, multiple pressing tubes symmetrically installed on both sides of the upper part of the turntable, and a fixing block and a collection box respectively provided on both sides of the installation ring.
[0004] Existing technologies use a rotating mechanism to compress and discharge the raw drug. While these technologies can compress tablets, the presence of numerous voids in the raw drug during compression results in brittle, porous tablets. Furthermore, a significant amount of drug powder remains in the molds after use.
[0005] In view of this, this utility model is proposed. Utility Model Content
[0006] To solve the aforementioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0007] A rotary tablet press, comprising:
[0008] The base plate has a support plate fixedly connected to the top of its rear wall. The support plate is an inverted L-shaped frame. An electric cylinder is fixedly connected to the top of the support plate. Support legs and a motor are installed at the bottom of the base plate.
[0009] The powder carrier box is fixedly connected to the top side wall of the base plate by a bracket installed at the bottom. The powder carrier box is a rectangular box with a hollow interior. A round tube is installed on the top of the powder carrier box. A discharge pipe is symmetrically fixedly connected to the side wall of the powder carrier box. The discharge pipe is an L-shaped round tube with its opening facing downward.
[0010] The tableting structure is located on top of the base plate and is used to make tablets. The tableting structure includes: a fixed platform, a vibrating motor, a turntable, a tableting tube, a cap, a tableting column, a discharge column, and a cleaning column. The fixed platform is fixedly connected to the top of the base plate, the vibrating motor is fixedly connected to the top of the fixed platform, the turntable is rotatably connected to the top of the fixed platform, the tableting tube is fixedly connected to the top of the turntable, the cap is movably connected to the bottom of the support plate, the tableting column is fixedly connected to the bottom of the cap, the discharge column is also fixedly connected to the bottom of the cap, and the cleaning column is also fixedly connected to the bottom of the cap.
[0011] In a preferred embodiment of this utility model, the fixed platform is cylindrical, and a circular groove is provided through the top of the fixed platform. A circular rod is rotatably connected in the circular groove of the fixed platform. The top of the circular rod is fixedly connected to the center of the bottom of the turntable. The motor can drive the circular rod to rotate. A slot adapted to the size of the vibration motor is provided on the side of the top of the fixed platform near the powder box. The vibration motor is fixedly connected in the slot on the top of the fixed platform. The vibration motor is located directly below the opening of the discharge pipe.
[0012] In a preferred embodiment of this utility model, the turntable is a hollow circular box with an open top, the tableting tube is a circular tube, and multiple identical tableting tubes are arranged in a circular array on the top of the turntable. The bottom of each tableting tube can pass through the wall of the turntable, and the bottom opening of the turntable can be aligned with the top opening of the tableting tube. The pressure cap is a disc with an opening on the side wall, and the opening on the pressure cap wall is located directly above the turntable. The bottom of the electric cylinder can be fixedly connected to the center of the top of the pressure cap. The tableting column and the discharge column are cylindrical with the same diameter, the discharge column is longer than the tableting column, and the tableting column is located at the rear. The cleaning column is a rubber cylinder with an annular groove on the arc surface, and the cleaning column is located at the bottom front of the pressure cap. The tableting column, the discharge column, and the cleaning column can all be inserted into the tableting tube cavity.
[0013] In a preferred embodiment of the present invention, a cover plate is fixedly connected to the bottom opening of the symmetrical turntable wall. The cover plate is capsule-shaped and can be placed on the top opening of the tableting tube.
[0014] In a preferred embodiment of this utility model, an arc-shaped opening is provided on one side of the front wall of the platform, the opening position of the platform wall is opposite to the position of the turntable, and a receiving pipe is fixedly connected to the arc-shaped opening of the platform wall.
[0015] In a preferred embodiment of this utility model, the receiving pipe is a U-shaped pipe, and one end of the receiving pipe can be connected to the arc-shaped opening on the wall of the fixed platform.
[0016] In a preferred embodiment of the present invention, a powder collection groove is provided on the top of the front wall of the fixed platform. The powder collection groove is semi-capsule shaped and the bottom surface of the powder collection groove is inclined. The powder collection groove is located directly below the cleaning column.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] 1. By setting up a tableting structure, the high-frequency vibration of the vibrating motor can reduce the gaps between the drug powders during tablet production, thereby making the tablets produced by this solution more solid. In addition, the cover plate can reduce dust and mist when the drug powder is discharged, and the cleaning column can achieve self-cleaning of the tableting tube after discharge, thus eliminating the need for manual cleaning of the tableting tube.
[0019] 2. By setting up a receiving pipe, it is easy to collect the tablets after they are made, and the powder collection trough can collect the cleaned-up powder, which facilitates the recycling of the powder and indirectly reduces the cost of making tablets.
[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0021] In the attached diagram:
[0022] Figure 1 This is a perspective view of the present utility model;
[0023] Figure 2 This is a perspective view of the structure below the support plate of this utility model;
[0024] Figure 3 This is an exploded view of the powder carrier box and the base plate of this utility model;
[0025] Figure 4 This is an exploded view of the turntable and the fixed platform of this utility model;
[0026] Figure 5 This is a perspective view of the bottom of the cover of this utility model.
[0027] In the diagram: 20. Base plate; 21. Support plate; 22. Electric cylinder; 23. Powder container; 24. Discharge pipe; 30. Fixed platform; 31. Vibration motor; 32. Powder collection trough; 33. Collection pipe; 34. Turntable; 35. Tableting tube; 36. Cover plate; 40. Press cap; 41. Tableting column; 42. Discharge column; 43. Cleaning column. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0029] like Figure 1 and Figure 2 As shown, a rotary tablet press includes: a base plate 20, a support plate 21 fixedly connected to the top of the rear wall of the base plate 20, the support plate 21 being an inverted L-shaped frame, an electric cylinder 22 fixedly connected to the top of the support plate 21, and a support leg and a motor installed at the bottom of the base plate 20.
[0030] The powder carrier box 23 is fixedly connected to the top side wall of the base plate 20 via a bracket installed at the bottom. The powder carrier box 23 is a rectangular box with a hollow cavity. A round tube is installed on the top of the powder carrier box 23. A discharge pipe 24 is symmetrically fixedly connected to the side wall of the powder carrier box 23. The discharge pipe 24 is an L-shaped round tube with its opening facing downward. The motor and electric cylinder 22 are both electrically connected to the power supply. In use, the powder is added into the cavity of the powder carrier box 23 through the round tube at the top. This is existing technology, so it will not be described in detail here.
[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the tableting structure is located on top of the base plate 20 for making tablets. The tableting structure includes: a fixed platform 30, a vibration motor 31, a turntable 34, a tableting tube 35, a pressure cap 40, a tableting column 41, a discharge column 42, and a cleaning column 43. The fixed platform 30 is fixedly connected to the top of the base plate 20, the vibration motor 31 is fixedly connected to the top of the fixed platform 30, the turntable 34 is rotatably connected to the top of the fixed platform 30, the tableting tube 35 is fixedly connected to the top of the turntable 34, the pressure cap 40 is movably connected to the bottom of the support plate 21, the tableting column 41 is fixedly connected to the bottom of the pressure cap 40, the discharge column 42 is also fixedly connected to the bottom of the pressure cap 40, and the cleaning column 43 is also fixedly connected to the bottom of the pressure cap 40.
[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the fixed platform 30 is cylindrical, with a circular groove extending through its top. A circular rod is rotatably connected within this groove, and the top of the rod is fixedly connected to the center of the bottom of the turntable 34. A motor can drive the rod to rotate. A slot adapted to the size of the vibration motor 31 is provided on the side of the fixed platform 30 near the powder carrier 23. The vibration motor 31 is fixedly connected within this slot on the top of the fixed platform 30, located directly below the opening of the discharge pipe 24. The turntable 34 is a hollow circular box with an open top. The tableting tube 35 is cylindrical, and multiple identical tableting tubes 35 are arranged in a circular array on the top of the turntable 34. The bottom of each tableting tube 35 can pass through the wall of the turntable 34, and the bottom opening of the turntable 34 can be aligned with the top opening of the tableting tube 35. The pressure cap 40 is a disc with openings on its side walls. The opening is located directly above the turntable 34. The bottom of the electric cylinder 22 can be fixedly connected to the center of the top of the pressure cap 40. The tableting column 41 and the discharge column 42 are cylindrical with the same diameter. The length of the discharge column 42 is greater than that of the tableting column 41. The tableting column 41 is located at the rear. The cleaning column 43 is a rubber cylinder with an annular groove on the arc surface. The cleaning column 43 is located at the bottom front of the pressure cap 40. The tableting column 41, the discharge column 42 and the cleaning column 43 can all be inserted into the cavity of the tableting tube 35. A cover plate 36 is fixedly connected to the bottom opening of the symmetrical turntable 34 wall. The cover plate 36 is a capsule-shaped plate. The cover plate 36 can be placed on the top opening of the tableting tube 35. An arc-shaped opening is opened on one side of the front wall of the fixed platform 30. The opening position of the fixed platform 30 wall is opposite to the position of the turntable 34. A receiving pipe 33 is fixedly connected to the arc-shaped opening of the fixed platform 30 wall.
[0033] In practical use, the powder-carrying box 23 first discharges the powder in its cavity through the discharge pipe 24 into the corresponding tableting tube 35 directly below it. Then, the power is turned on, and the vibration motor 31 emits high-frequency vibration. At this time, the discharged powder will be above the vibration motor 31, and the vibration motor 31 can reduce the gaps in the powder. Then, the motor drives the turntable 34 to rotate through the round rod. When the turntable 34 rotates, it drives the tableting tube 35 loaded with powder to move downwards towards the tableting column 41. When the tableting tube 35 moves, it can move the powder in its cavity along the top of the fixed platform 30. When the tableting tube 35 moves to the bottom of the tableting column 41, the electric cylinder 22 drives the pressure cover 40 to move downwards. The moving pressure cover 40 drives the tableting column 41, the discharge column 42, and the cleaning column 43 to move downwards simultaneously into the corresponding cavity of each tableting tube 35. When the tableting column 41 is inserted into the tableting tube 35, it will compact the powder in the cavity of the tableting tube 35 to form a tablet. Then, the cap 40 is retracted upwards by the electric cylinder 22, and the motor drives the turntable 34 to rotate again. At this time, the tableting tube 35 carrying tablets will move to below the discharge column 42, and then the cap 40 moves downwards again. The falling discharge column 42 will push the tablets in the cavity of the tableting tube 35 down, and the pushed tablets will fall into the opening of the fixed platform 30. Then, it moves with the arc-shaped opening to the cavity of the receiving tube 33. After discharging, the tableting tube 35 will be driven by the turntable 34. Rotate to the bottom of the cleaning column 43, and the cleaning column 43 will be inserted into the tableting tube 35 when it moves downward. The wall of the cleaning column 43 will contact the inside of the tableting tube 35 and scrape the inner wall of the tableting tube 35, thereby scraping off the powder inside the tableting tube 35. The scraped-off powder will fall into the powder collection tank 32. During the process of making tablets in one tableting tube 35, the other tableting tubes 35 will also make tablets simultaneously. The cover plate 36 can cover the dust and mist raised when the powder enters the tableting tube 35.
[0034] In summary, by setting up a tableting structure, the high-frequency vibration of the vibrating motor 31 can reduce the gaps between the drug powders during tablet production, thereby making the tablets produced by this solution more solid. Furthermore, the cover plate 36 can reduce dust and mist when the drug powder is discharged, and the cleaning column 43 can achieve self-cleaning of the cavity of the tableting tube 35 after discharge, thus eliminating the need for manual cleaning of the cavity of the tableting tube 35.
[0035] like Figure 4 As shown, the receiving pipe 33 is a U-shaped pipe, and one end of the receiving pipe 33 can be connected to the arc-shaped opening on the wall of the fixed platform 30. A powder receiving trough 32 is provided on the top of the front wall of the fixed platform 30. The powder receiving trough 32 is a semi-capsule-shaped trough. The bottom surface of the powder receiving trough 32 is inclined. The powder receiving trough 32 is located directly below the cleaning column 43.
[0036] In actual use, the tablets that are pushed down will fall into the opening of the fixed platform 30, and then move into the cavity of the receiving tube 33 along the arc-shaped opening;
[0037] In summary, by setting up the receiving pipe 33, it is convenient to collect the tablets after they are made, and by using the powder collection trough 32, the cleaned-up powder can be collected, which facilitates the recycling of the powder and indirectly reduces the cost of making tablets.
[0038] Working principle: First, the powder-carrying box 23 discharges the powder in its cavity through the discharge pipe 24 into the corresponding tableting tube 35 directly below it. Then, the power is turned on, and the vibration motor 31 emits high-frequency vibration. At this time, the discharged powder will be above the vibration motor 31, and the vibration motor 31 can reduce the gaps in the powder. Then, the motor drives the turntable 34 to rotate through the round rod. When the turntable 34 rotates, it will drive the tableting tube 35 loaded with powder to move downwards towards the tableting column 41. When the tableting tube 35 moves, it can drive the powder in its cavity to move along the top of the fixed platform 30. When the tableting tube 35 moves to the bottom of the tableting column 41, the electric cylinder 22 will drive the pressure cover 40 to move downwards. The moving pressure cover 40 will drive the tableting column 41, the discharge column 42 and the cleaning column 43 to move downwards simultaneously into the corresponding tableting tube 35 cavity. When the tablet is placed inside the compression tube 35, it is compacted with the powder inside the compression tube 35 to form a tablet. Then, the cap 40 is driven by the electric cylinder 22 to retract upwards. Then, the motor drives the turntable 34 to rotate again. At this time, the compression tube 35 carrying the tablet will move to the bottom of the discharge column 42. Then, the cap 40 moves downwards again. At this time, the falling discharge column 42 will push the tablet inside the compression tube 35 down. The pushed tablet will fall into the opening of the fixed platform 30 and then move to the cavity of the receiving tube 33 along the arc-shaped opening. Then, the compression tube 35 after discharge will be driven by the turntable 34 to rotate to the bottom of the cleaning column 43. When the cleaning column 43 moves downwards, it will insert into the compression tube 35. The wall of the cleaning column 43 will contact the inside of the compression tube 35 and scrape the inner wall of the compression tube 35, thereby scraping off the powder inside the compression tube 35. The scraped-off powder will fall into the powder collection tank 32.
[0039] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A rotary tablet press, characterized in that, include: The base plate (20) has a support plate (21) fixedly connected to the top of the rear wall surface of the base plate (20). The support plate (21) is an inverted L-shaped frame. An electric cylinder (22) is fixedly connected to the top of the support plate (21). Support legs and a motor are installed at the bottom of the base plate (20). The powder carrier box (23) is fixedly connected to the top side wall of the base plate (20) by a bracket installed at the bottom. The powder carrier box (23) is a rectangular box with a hollow cavity. A round tube is installed on the top of the powder carrier box (23). A discharge pipe (24) is symmetrically fixedly connected to the side wall of the powder carrier box (23). The discharge pipe (24) is an L-shaped round pipe with its opening facing downward. The tableting structure is set on the top of the base plate (20) for making tablets. The tableting structure includes: a fixed platform (30), a vibration motor (31), a turntable (34), a tableting tube (35), a cap (40), a tableting column (41), a discharge column (42), and a cleaning column (43). The fixed platform (30) is fixedly connected to the top of the base plate (20), the vibration motor (31) is fixedly connected to the top of the fixed platform (30), the turntable (34) is rotatably connected to the top of the fixed platform (30), the tableting tube (35) is fixedly connected to the top of the turntable (34), the cap (40) is movably connected to the bottom of the support plate (21), the tableting column (41) is fixedly connected to the bottom of the cap (40), the discharge column (42) is also fixedly connected to the bottom of the cap (40), and the cleaning column (43) is also fixedly connected to the bottom of the cap (40).
2. The tablet rotary tablet press according to claim 1, characterized in that, The fixed platform (30) is cylindrical, and a circular groove is opened through the top of the fixed platform (30). A circular rod is rotatably connected in the circular groove of the fixed platform (30). The top of the circular rod is fixedly connected to the center of the bottom of the turntable (34). The motor can drive the circular rod to rotate. A slot adapted to the size of the vibration motor (31) is opened on the side of the fixed platform (30) near the powder box (23). The vibration motor (31) is fixedly connected in the slot on the top of the fixed platform (30). The vibration motor (31) is located directly below the opening of the discharge pipe (24).
3. A rotary tablet press according to claim 1, characterized in that, The turntable (34) is a hollow circular box with an open top. The tablet compression tube (35) is cylindrical. Multiple identical tablet compression tubes (35) are arranged in a circular array on the top of the turntable (34). The bottom of each tablet compression tube (35) can pass through the wall of the turntable (34). The bottom opening of the turntable (34) can be aligned with the top opening of the tablet compression tube (35). The pressure cap (40) is a disc with an opening on the side wall. The opening on the wall of the pressure cap (40) is located directly above the turntable (34). The electric cylinder (22) The bottom of the tube can be fixedly connected to the center of the top of the pressure cap (40). The tableting column (41) and the discharge column (42) are cylindrical with the same diameter. The length of the discharge column (42) is greater than that of the tableting column (41). The tableting column (41) is located at the rear. The cleaning column (43) is a rubber cylinder with an annular groove on the arc surface. The cleaning column (43) is located at the bottom front of the pressure cap (40). The tableting column (41), the discharge column (42) and the cleaning column (43) can all be inserted into the cavity of the tableting tube (35).
4. A rotary tablet press according to claim 1, characterized in that, A cover plate (36) is fixedly connected to the bottom opening of the wall of the symmetrical turntable (34). The cover plate (36) is capsule-shaped and can be placed on the top opening of the tableting tube (35).
5. A rotary tablet press according to claim 1, characterized in that, An arc-shaped opening is provided on one side of the front wall of the fixed platform (30). The opening position of the fixed platform (30) is opposite to the position of the turntable (34). A receiving pipe (33) is fixedly connected to the arc-shaped opening of the fixed platform (30).
6. A rotary tablet press according to claim 5, characterized in that, The receiving pipe (33) is a U-shaped pipe, and one end of the receiving pipe (33) can be connected to the arc-shaped opening on the wall of the fixed platform (30).
7. A rotary tablet press according to claim 5, characterized in that, The front wall of the fixed platform (30) is provided with a powder collection groove (32). The powder collection groove (32) is a semi-capsule shaped groove. The bottom surface of the powder collection groove (32) is inclined. The powder collection groove (32) is located directly below the cleaning column (43).
Citation Information
Patent Citations
Rotary tablet medicine pressing machine
CN220409746U