Powder tabletting device

Abstract

The utility model belongs to the technical field of tablet processing, and particularly relates to a powder tabletting device which comprises a fixing shell, a lower die is arranged in the fixing shell, a plurality of tabletting grooves are formed in the top face of the lower die, a pressing die is arranged on the upper side of the lower die, a support is fixedly connected to the bottom face of the fixing shell, and a plurality of air cylinders are evenly and fixedly connected to the bottom face of the fixing shell. The output end of the air cylinder penetrates through the fixing shell and is movably connected with the lower die, a transmission assembly is arranged in an inner cavity of the fixing shell, an ejection mechanism is arranged in the tablet pressing groove, and a collecting mechanism is arranged on the side wall of the fixing shell. According to the utility model, the rotating centrifugal force of the lower die can be utilized to throw out flakes, the formed flakes collide with the collecting cover through the centrifugal force and fall onto the filter plate, and redundant powder can be filtered while the strength is detected.

Description

Powder tableting device Technical Field

[0001] This utility model belongs to the field of pharmaceutical tablet processing technology, specifically relating to powder tableting equipment. Background Technology

[0002] Direct compression tableting refers to the method of directly compressing a mixture of drugs and excipients into tablets without a granulation process. This process avoids granulation, saving time and energy, simplifying the process, and reducing the number of steps. It is suitable for drugs that are unstable in humid and hot conditions, and the resulting tablets have good disintegration properties and excellent dispersion uniformity.

[0003] In existing tableting devices, after tableting, many use a pusher plate to push out the tablets. While this method can achieve convenient material discharge, because there are many tableting slots, it is not convenient to test the strength of the tablets after tableting. If the pressure strength in a local tableting slot is insufficient, it cannot be detected quickly, thus reducing the tableting quality. Summary of the Invention

[0004] The purpose of this invention is to provide a powder tableting device that can use the centrifugal force of the rotating lower mold to throw out tablets. The formed tablets collide with the collection hood through centrifugal force and fall onto the filter plate, which can detect the strength while filtering out excess powder.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A powder tableting device includes a fixed shell, a lower mold disposed inside the fixed shell, a plurality of tableting grooves formed on the top surface of the lower mold, a pressing mold disposed on the upper side of the lower mold, a bracket fixedly connected to the bottom surface of the fixed shell, a plurality of cylinders uniformly fixedly connected to the bottom surface of the fixed shell, the output end of the cylinders penetrating the fixed shell and movably connected to the lower mold, a transmission assembly disposed in the inner cavity of the fixed shell, an ejection mechanism disposed in the tableting grooves, and a collection mechanism disposed on the side wall of the fixed shell.

[0007] The transmission assembly includes a motor fixedly connected to the bottom surface of the fixed shell. The output end of the motor passes through the fixed shell and is fixedly connected to a rotating shaft. A cylinder is fixedly connected to the bottom surface of the lower mold. Two sliders are symmetrically fixedly connected to the left and right sides of the side wall of the rotating shaft near the top. Two sliding grooves are symmetrically opened on the inner wall of the cylinder. The sliders are slidably connected to the sliding grooves.

[0008] The bottom surface of the lower mold is provided with an annular groove, and an annular block is rotatably connected in the annular groove. Both the annular groove and the annular block have an "I" shaped cross section, and the cylinder output end is fixedly connected to the annular block.

[0009] The ejection mechanism includes a top plate disposed in the tableting groove, a movable rod movably connected to the bottom surface of the tableting groove, the top ends of the movable rods being fixedly connected to the top plate, and the bottom ends of the movable rods penetrating the lower mold and being fixedly connected to the same annular plate.

[0010] The collection mechanism includes a collection cover fixedly connected to the side wall of the fixed shell. The inner cavity of the collection cover is provided with a collection shell. Two support plates are fixedly connected to the inner wall of the collection shell. A filter plate is provided on the top surface of the support plates.

[0011] The height of the collection hood is greater than the height of the lower mold.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This practical powder tableting device uses the centrifugal force of the rotating lower mold to throw out the tablets after tableting. The formed tablets collide with the collection hood through centrifugal force and fall onto the filter plate. On the one hand, the strength of the tablets can be detected by the mutual collision force, and on the other hand, the filter plate can realize the storage of tablets and the separation of residual powder, thereby improving the tableting quality. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model embodiment;

[0015] Figure 2 is a cross-sectional structural schematic diagram of this utility model embodiment;

[0016] Figure 3 is a schematic diagram of the disassembled structure of the collection mechanism in this embodiment;

[0017] Figure 4 is a schematic diagram of the transmission assembly of this utility model embodiment;

[0018] Figure 5 is a structural schematic diagram of the ejection mechanism of this utility model embodiment;

[0019] Figure 6 is an enlarged view of point A in Figure 2 of this practical embodiment.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Fixed shell; 2. Lower mold; 3. Pressing groove; 4. Pressing mold; 5. Support; 6. Cylinder; 7. Annular block; 8. Annular groove; 9. Motor; 10. Rotating shaft; 11. Cylinder; 12. Slider; 13. Slide groove; 14. Movable rod; 15. Top plate; 16. Annular plate; 17. Collection cover; 18. Collection shell; 19. Filter plate; 20. Support plate. Detailed Implementation

[0022] To make the purpose and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0023] As shown in Figures 1-6, the powder tableting device includes a fixed shell 1, a lower mold 2 is provided inside the fixed shell 1, several tableting grooves 3 are opened on the top surface of the lower mold 2, a pressing mold 4 is provided on the upper side of the lower mold 2, the pressing mold 4 is connected to an external driving device, preferably a hydraulic cylinder. This extrusion molding principle is existing technology. A bracket 5 is fixedly connected to the bottom surface of the fixed shell 1, and multiple cylinders 6 are uniformly fixedly connected to the bottom surface of the fixed shell 1. The output end of the cylinder 6 passes through the fixed shell 1 and is movably connected to the lower mold 2. A transmission component is provided in the inner cavity of the fixed shell 1, an ejection mechanism is provided in the tableting grooves 3, and a collection mechanism is provided on the side wall of the fixed shell 1.

[0024] As shown in Figures 2 and 4, the transmission assembly includes a motor 9 fixedly connected to the bottom surface of the fixed housing 1. The output end of the motor 9 passes through the fixed housing 1 and is fixedly connected to a rotating shaft 10. A cylinder 11 is fixedly connected to the bottom surface of the lower mold 2. Two sliders 12 are symmetrically fixedly connected to the left and right sides of the side wall of the rotating shaft 10 near the top. Two grooves 13 are symmetrically opened on the inner wall of the cylinder 11, and the sliders 12 are slidably connected to the grooves 13. The sliders 12 and the grooves 13 are coated with tungsten carbide to extend their service life.

[0025] In this process, when the lower mold 2 is raised and lowered, it drives the cylinder 11 to rise and fall on the rotating shaft 10. When the motor 9 drives the lower mold 2 to rotate, the rotational force can be transmitted by the slider 12 and the slide 13. The rotation can be carried out without affecting the raising and lowering. Its function is to use the centrifugal force generated by the rotation to throw the sheet-like material on the lower mold 2 out, so as to achieve rapid material discharge.

[0026] As shown in Figure 6, an annular groove 8 is provided on the bottom surface of the lower mold 2. An annular block 7 is rotatably connected in the annular groove 8. Both the annular groove 8 and the annular block 7 have an "I" shaped cross section. The "I" shaped structure can prevent the annular block 7 from detaching from the annular groove 8, further improving stability and ensuring rotational accuracy. The output end of the cylinder 6 is fixedly connected to the annular block 7.

[0027] As shown in Figures 2 and 5, the ejection mechanism includes a top plate 15 disposed within the pressing groove 3. A movable rod 14 is movably connected to the bottom surface of the pressing groove 3. The top ends of the movable rod 14 are fixedly connected to the top plate 15, and the bottom ends of the movable rod 14 penetrate the lower mold 2 and are fixedly connected to the same annular plate 16. When the lower mold 2 rotates, it drives the ejection mechanism to rotate synchronously. The ejection mechanism is always in the lowest position. When the lower mold 2 descends, the formed sheet material can be exposed above the lower mold 2. When the top plate 15 rotates in connection with the lower mold 2, the sheet material is thrown out.

[0028] As shown in Figures 2 and 3, the collection mechanism includes a collection cover 17 fixedly connected to the side wall of the fixed shell 1. A collection shell 18 is located inside the collection cover 17, and two support plates 20 are fixedly connected to the inner wall of the collection shell 18. A filter plate 19 is mounted on the top surface of the support plates 20. When the sheet-like material is thrown out by centrifugal force, it collides with the collection cover 17 to test the strength of the formed sheet-like material. If the compression force is insufficient, the sheet-like material breaks and falls through the filter plate 19 into the collection shell 18. If the strength meets the standard, the sheet-like material is collected above the filter plate 19. This also filters out any remaining excess powder. The height of the collection cover 17 is greater than the height of the lower mold 2 to shield the thrown-out sheet-like material and prevent it from falling outside the collection cover 17.

[0029] The working principle of this utility is as follows: First, the powder is filled into the tableting groove 3. Then, the external device drives the mold 4 to move downward. The powder in the tableting groove 3 is squeezed by the downward pressure of the mold 4. When the powder is squeezed into a tablet, the mold 4 is reset. Then, the cylinder 6 is started. The output end of the cylinder 6 drives the lower mold 2 to move downward through the ring block 7. The tablet is kept still by the action of the top plate 15. After the lower mold 2 descends to the appropriate position, the tablet is located on the upper side of the lower mold 2.

[0030] Next, the motor 9 is started. The output shaft of the motor 9 drives the slider 12 to rotate through the rotating shaft 10. The slider 12 fits with the groove 13 and drives the cylinder 11 to rotate. The cylinder 11 drives the lower mold 2 to rotate. The centrifugal force generated by the rotation throws out the sheet. The sheet collides with the collection cover 17 to test the strength of the formed sheet. If the compression force is insufficient, the sheet will break and fall into the collection shell 18 through the filter plate 19. If the strength meets the standard, the sheet will be collected above the filter plate 19. At the same time, it can also filter the residual excess powder, effectively improving the tableting quality.

[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A powder tableting device, characterized by: The device includes a fixed shell (1), a lower mold (2) is provided inside the fixed shell (1), a number of pressing grooves (3) are opened on the top surface of the lower mold (2), a pressing mold (4) is provided on the upper side of the lower mold (2), a bracket (5) is fixedly connected to the bottom surface of the fixed shell (1), a number of cylinders (6) are uniformly fixedly connected to the bottom surface of the fixed shell (1), the output end of the cylinder (6) passes through the fixed shell (1) and is movably connected to the lower mold (2), a transmission assembly is provided in the inner cavity of the fixed shell (1), an ejection mechanism is provided in the pressing grooves (3), and a collection mechanism is provided on the side wall of the fixed shell (1).

2. A powder tableting device according to claim 1, characterized in that: The transmission assembly includes a motor (9) fixedly connected to the bottom surface of the fixed shell (1). The output end of the motor (9) passes through the fixed shell (1) and is fixedly connected to a rotating shaft (10). A cylinder (11) is fixedly connected to the bottom surface of the lower mold (2). Two sliders (12) are symmetrically fixedly connected to the left and right sides of the side wall of the rotating shaft (10) near the top. Two grooves (13) are symmetrically opened on the inner wall of the cylinder (11). The sliders (12) are slidably connected to the grooves (13).

3. The powder tableting apparatus according to claim 1, characterized in that: The bottom surface of the lower mold (2) is provided with an annular groove (8), and an annular block (7) is rotatably connected in the annular groove (8). The cross-sections of the annular groove (8) and the annular block (7) are both "I" shaped structures, and the output end of the cylinder (6) is fixedly connected to the annular block (7).

4. The powder tableting device of claim 1, wherein: The ejection mechanism includes a top plate (15) disposed in the tablet pressing groove (3). A movable rod (14) is movably connected to the bottom surface of the tablet pressing groove (3). The top ends of the movable rod (14) are fixedly connected to the top plate (15). The bottom end of the movable rod (14) passes through the lower mold (2) and is fixedly connected to the same annular plate (16).

5. The powder tableting device of claim 1, wherein: The collection mechanism includes a collection cover (17) fixedly connected to the side wall of the fixed shell (1), and a collection shell (18) is provided in the inner cavity of the collection cover (17). Two support plates (20) are fixedly connected to the inner wall of the collection shell (18), and a filter plate (19) is provided on the top surface of the support plate (20).

6. The powder tableting apparatus according to claim 5, characterized in that: The height of the collection cover (17) is greater than the height of the lower mold (2).

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