Medicine tablet pressing machine

Abstract

The invention relates to the technical field of tablet presses, and discloses a medicine tablet press which comprises a frame, an upper die, a middle die and a lower die which are parallel to one another are rotationally arranged in the frame, a power device used for driving the upper die, the middle die and the lower die to rotate synchronously is arranged on the frame, and a plurality of first mounting holes are evenly formed in the middle die in the circumferential direction. The frame is further provided with a feeding device used for feeding the sheet dies one by one, the upper die is evenly provided with a plurality of second mounting holes in the circumferential direction, the second mounting holes are provided with upper punches through first reset springs, the lower die is evenly provided with a plurality of third mounting holes in the circumferential direction, and the third mounting holes are provided with lower punches. An upper pressing disc is installed on the frame through a first support, a lower pressing disc is further fixedly installed on the frame through a second support, a tablet pressing protruding section and a material ejecting protruding section are arranged on the lower pressing disc, the lower pressing disc is synchronously arranged, so that the upper punch and the lower punch apply pressure to powder in a tablet die synchronously, the pressure is balanced, and tablets are prevented from being broken.

Description

Technical Field

[0001] The invention relates to the technical field of tablet presses, in particular to a tablet press for pharmaceutical tablets. Background Art

[0002] A tablet press is a device used to make tablets. It presses raw drug powder or granules into tablets of fixed shape and size through pressure. This device is usually used in the pharmaceutical industry to improve the efficiency and quality of drug production and can produce tablets of different specifications and shapes.

[0003] The existing pharmaceutical tablet press generally applies pressure through the upper punch of the upper punch plate to impact the middle punch die in the middle punch plate, and cooperates with the lower punch of the lower punch plate to achieve powder compaction. The defect is generally that the pressure applied only by the upper punch will cause uneven pressure on the upper and lower surfaces of the tablet, which can easily cause the tablet to crack. The existing technology of using the upper punch for punching alone can refer to the Chinese patent application with application number CN202321389724.0 and the name of a tablet pharmaceutical tablet press, and can also refer to the Chinese patent application with application number CN202321756096.5 and the name of a tablet pharmaceutical rotary pressing machine. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the above-mentioned related art at least to a certain extent.

[0005] To this end, the present invention specifically provides the following technical solutions:

[0006] A pharmaceutical tablet press comprises a frame, on which an upper die, a middle die and a lower die are rotatably arranged in parallel with each other, a power device for driving the upper die, the middle die and the lower die to rotate synchronously is arranged on the frame, a plurality of mounting holes 1 are evenly arranged on the middle die in a circumferential direction, a tablet die is mounted on the mounting hole 1, a feeding device for feeding materials into the tablet die one by one is also arranged on the frame, a plurality of mounting holes 2 are evenly arranged on the upper die in a circumferential direction, an upper punch is mounted on the mounting hole 2 through a reset spring 1, a plurality of mounting holes 3 are evenly arranged on the lower die in a circumferential direction, and the mounting hole 3 is mounted A lower punch is provided, an upper pressure plate is installed on the frame through a bracket one, a lower pressure plate is fixedly installed on the frame through a bracket two, the lower pressure plate has a tablet pressing convex section and a material ejecting convex section, a medicine ejecting plate is provided between the upper die and the middle die, the bottom edge of the medicine ejecting plate contacts the upper surface of the middle die, the upper surface of the medicine ejecting plate is flush with the bottom edge of the upper punch when it is at the highest position on the upper die, a sliding groove is connected to the outer edge of the medicine ejecting plate, the sliding groove is fixedly connected to the frame through a bracket three, a collecting box is provided at the bottom end of the sliding groove, and the collecting box is fixed on the frame.

[0007] Preferably, the bracket 1 includes a fixed seat 1 and a sliding seat 1, the fixed seat 1 is fixedly installed on the frame, a plurality of locking bolts 1 are installed on the fixed seat 1, the sliding seat 1 is slidably embedded in the locking bolt 1 through a strip sliding hole 1, a pressure spring 1 is arranged between the top of the fixed seat 1 and the top of the sliding seat 1, a limiting rod 1 is fixedly installed on the bottom end of the fixed seat 1, and the sliding seat 1 is fixedly connected to the upper pressure plate through a pillar 1.

[0008] Preferably, the bracket 2 includes a fixed seat 2 and a sliding seat 2, the fixed seat 2 is fixedly installed on the frame, a plurality of locking bolts 2 are installed on the fixed seat 2, the sliding seat 2 is slidably embedded on the locking bolts 2 through a strip sliding hole 2, a pressure spring 2 is arranged between the bottom end of the fixed seat 2 and the bottom end of the sliding seat 2, a limiting rod 2 is fixedly installed on the top end of the fixed seat 1, and the sliding seat 2 is fixedly connected to the lower pressure plate through a pillar 2.

[0009] Preferably, the feeding device comprises a feeding box, the feeding box is fixedly mounted on the top of the frame, and a material guide pipe is fixedly connected to the top of the feeding box.

[0010] Preferably, the power device includes a motor seat, which is fixedly mounted on the bottom end of the frame, and a driving motor is mounted on the motor seat. The output shaft of the driving motor is fixedly connected to a driving shaft, and the upper mold, the middle mold and the lower mold are fixedly sleeved on the driving shaft.

[0011] Preferably, a cleaning box is fixedly connected to one side of the medicine ejection plate away from the second sliding seat, a slide groove is provided in the cleaning box, an extrusion column is installed in the slide groove through a second return spring, a cleaning sponge column is fixedly connected to the bottom end of the extrusion column, and a rubber cleaning surface is provided on the top end of the extrusion column.

[0012] Preferably, a mounting seat is fixedly installed at the bottom end of the frame, a separation tank is installed on the mounting seat, the top of the separation tank is connected to an exhaust pipe, and a fan for making the exhaust pipe present a negative pressure is also fixedly installed on the top of the separation tank, the exhaust pipe is connected to the sliding groove through a first exhaust flexible branch pipe, a partition is fixedly installed in the separation tank, a plurality of cut-off pipes are connected and installed at the bottom of the partition, an air outlet is connected and installed at the bottom end of the separation tank, and the bottom end of the air outlet is higher than the lowest end of the cut-off pipe.

[0013] Preferably, the cleaning box is connected to the exhaust pipe through a second exhaust flexible branch pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention synchronously sets the lower pressing plate so that the upper punch and the lower punch synchronously press the powder in the tablet die, thereby balancing the pressure and preventing the tablet from breaking. In addition, the present invention also sets a material ejecting protrusion section, which can eject the tablet and then automatically eject it through the medicine ejecting plate, making the device more automated.

[0016] The present invention also pre-compresses the tablets uniformly up and down through the pre-tightening force applied by the first bracket and the second bracket, and the pre-compressed tablets are less likely to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 This is an overall structural diagram from one angle of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the separation tank of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure excluding the sliding groove, medicine plate and collecting box;

[0021] Figure 4 It is a schematic diagram of the internal structure of the collection box of the present invention;

[0022] Figure 5 It is a schematic diagram of the internal structure of the upper mold, the middle mold and the lower mold of the present invention;

[0023] Figure 6 For the present invention Figure 3 Another angle diagram of the structure

[0024] In the figure:

[0025] 1. Frame; 2. Upper die; 3. Middle die; 4. Lower die; 5. Sheet die; 6. Reset spring 1; 7. Upper punch; 8. Lower punch; 9. Upper pressure plate; 10. Lower pressure plate; 11. Sheet pressing convex section; 12. Ejecting convex section; 13. Pill removing plate; 14. Sliding groove; 15. Bracket 3; 16. Collecting box; 17. Fixed seat 1; 18. Sliding seat 1; 19. Locking bolt 1; 20. Strip sliding hole 1; 21. Pressure spring 1; 22. Pillar 1; 23. Fixed seat 2; 24. Sliding seat 2; 25. Locking bolt 2; 26 1. Two strip slide holes; 27. Two pressure springs; 28. Two pillars; 29. ​​One limit rod; 30. Two limit rods; 31. Feed box; 32. Feed guide pipe; 34. Motor seat; 35. Drive motor; 36. Drive shaft; 37. Cleaning box; 38. Slide; 39. Two reset springs; 40. Extrusion column; 44. Cleaning sponge column; 45. Mounting seat; 46. Separation tank; 47. Exhaust pipe; 48. Fan; 49. First exhaust flexible branch pipe; 50. Partition; 51. Cutting pipe; 52. Air outlet; 53. Second exhaust flexible branch pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] like Figures 1 to 6 As shown, the present invention provides a pharmaceutical tablet press, comprising a frame 1, on which an upper die 2, a middle die 3 and a lower die 4 are rotatably arranged in parallel with each other, a power device for driving the upper die 2, the middle die 3 and the lower die 4 to rotate synchronously is arranged on the frame 1, a plurality of mounting holes 1 are evenly arranged on the middle die 3 in a circumferential direction, a tablet die 5 is installed on the mounting hole 1, a feeding device for feeding materials to the tablet die 5 one by one is also arranged on the frame 1, a plurality of mounting holes 2 are evenly arranged on the upper die 2 in a circumferential direction, an upper punch 7 is installed on the mounting hole 2 through a reset spring 1, a plurality of mounting holes 3 are evenly arranged on the lower die 4 in a circumferential direction, a lower punch 7 is installed on the mounting hole 3 Punch 8, an upper pressure plate 9 is installed on the frame 1 through a bracket 1, and a lower pressure plate 10 is fixedly installed on the frame 1 through a bracket 2. The lower pressure plate 10 has a tabletting convex section 11 and a material ejecting convex section 12. A medicine removing plate 13 is arranged between the upper die 2 and the middle die 3, and the bottom edge of the medicine removing plate 13 contacts the upper surface of the middle die 3. The upper surface of the medicine removing plate 13 is flush with the bottom edge of the upper punch 7 when it is at the highest position on the upper die 2. The outer edge of the medicine removing plate 13 is connected with a sliding groove 14, and the sliding groove 14 is fixedly connected to the frame 1 through a bracket 3 15. A collecting box 16 is arranged at the bottom end of the sliding groove 14, and the collecting box 16 is fixed on the frame 1.

[0031] The present invention feeds the materials through a feeding device, and then the upper pressing plate 9 and the lower pressing plate 10 work together to apply pressure from both ends to evenly press the powder in the tablet mold 5. Then the ejecting protrusion 12 can further raise the lower punch 8 to eject the pressed powder. Then the middle mold 3 continues to rotate, so that the tablets are knocked down to the sliding groove 14 by the medicine ejecting plate 13, and are collected in the sliding groove 14 after being decelerated and then collected in the collection box 16.

[0032] The bracket of the present invention includes a fixed seat 17 and a sliding seat 18. The fixed seat 17 is fixedly installed on the frame 1. A plurality of locking bolts 19 are installed on the fixed seat 17. The sliding seat 18 is slidably nested on the locking bolts 19 through a strip sliding hole 20. A pressure spring 21 is arranged between the top of the fixed seat 17 and the top of the sliding seat 18. A limiting rod 29 is fixedly installed on the bottom end of the fixed seat 17. The sliding seat 18 is fixedly connected to the upper pressure plate 9 through a pillar 22.

[0033] The bracket 2 of the present invention includes a fixed seat 23 and a sliding seat 24. The fixed seat 23 is fixedly installed on the frame 1. A plurality of locking bolts 25 are installed on the fixed seat 23. The sliding seat 24 is slidably nested on the locking bolts 25 through a strip sliding hole 26. A pressure spring 27 is arranged between the bottom end of the fixed seat 23 and the bottom end of the sliding seat 24. A limiting rod 230 is fixedly installed on the top end of the fixed seat 17. The sliding seat 24 is fixedly connected to the lower pressure plate 10 through a pillar 28.

[0034] The feeding device of the present invention comprises a feeding box 31 , which is fixedly mounted on the top of the frame 1 , and a material guide pipe 32 is fixedly connected to the top of the feeding box 31 .

[0035] The power device of the present invention includes a motor base 34, which is fixedly mounted on the bottom end of the frame 1. A driving motor 35 is mounted on the motor base 34. The output shaft of the driving motor 35 is fixedly connected to a driving shaft 36. The upper mold 2, the middle mold 3 and the lower mold 4 are fixedly sleeved on the driving shaft 36.

[0036] The medicine ejector plate 13 of the present invention is fixedly connected to a cleaning box 37 on one side away from the sliding seat 24, a slide groove 38 is provided in the cleaning box 37, an extrusion column 40 is installed in the slide groove 38 through a return spring 2 39, a cleaning sponge column 44 is fixedly connected to the bottom end of the extrusion column 40, and a rubber cleaning surface is provided on the top end of the extrusion column 40.

[0037] A mounting seat 45 is fixedly installed at the bottom end of the frame 1 of the present invention, and a separation tank 46 is installed on the mounting seat 45. The top of the separation tank 46 is connected to an exhaust pipe 47, and a fan 48 for making the exhaust pipe 47 present a negative pressure is also fixedly installed at the top of the separation tank 46. The exhaust pipe 47 is connected to the sliding groove 14 through a first exhaust flexible branch pipe 49. A partition 50 is fixedly installed in the separation tank 46, and a plurality of cut pipes 51 are connected and installed at the bottom of the partition 50. The bottom end of the separation tank 46 is connected and installed with an air outlet 52, and the bottom end of the air outlet 52 is higher than the lowest end of the cut pipe 51.

[0038] The cleaning box 37 of the present invention is connected to the exhaust pipe 47 through the second exhaust flexible branch pipe 53.

[0039] The working principle of the present invention is:

[0040] First, by controlling the opening and closing of the valve in the guide pipe 32, the powder in the feeding box 31 is fed into the tablet mold 5 through the guide pipe 32. During the feeding stage, the lower punch 8 is located at the lowest position on the lower mold 4 and the upper surface of the lower punch 8 just contacts the bottom surface of the tablet mold 5, thereby closing the bottom of the tablet mold 5 to prevent leakage of the powder. At this time, the driving motor 35 on the machine base 34 rotates by driving the driving shaft 36, so the upper mold 2, the middle mold 3 and the lower mold 4 fixedly mounted on the driving shaft 36 will rotate synchronously, and then the lower punch 8 and the upper punch 7 corresponding to the tablet mold 5 will also rotate synchronously until the lower punch 8 and the upper punch 7 contact the lower pressing plate 10 and the upper pressing plate 9 respectively through rotation;

[0041] Before the lower punch 8 and the upper punch 7 contact the lower pressure plate 10 and the upper pressure plate 9 respectively by rotating, since the pressure spring 21 on the bracket 1 is in a compressed state, the pressure spring 21 will press the sliding seat 18 downward, and the strip sliding hole 20 on the sliding seat 18 can slide down slightly along the locking bolt 19. Because the upper pressure plate 9 is slightly pressed downward by the pressure spring 21, and the limit rod 29 is used to prevent the sliding seat 18 from sliding excessively, the same bracket 2 also adopts the same principle to make the lower pressure plate 10 slightly lifted under the action of the pressure spring 27, so that the bottom end of the lower punch 8, and thus the lifting and pressing of the two will squeeze the lower punch 8 and the upper punch 7 through the lower pressure plate 10 and the upper pressure plate 9 respectively, thereby realizing the pre-pressing of a pressing piece of the lower punch 8 and the upper punch 7.

[0042] Then, after the pre-pressing is completed under the pressure of the pressure spring 1 21 and the pressure spring 2 27, the bulges on the surface of the lower pressure plate 10 and the upper pressure plate 9 will cause the lower punch 8 and the upper punch 7 to continue to squeeze, thereby completing the entire pressing process. After the pressing is completed, the upper punch 7 is reset by the reset spring 1 6, and the lower punch 8 continues to lift up when passing through the ejection convex section 12 until the tablet is ejected. After the tablet is ejected, the middle mold 3 continues to rotate. Since the medicine plate 13 is fixed to the frame 1, the tablet will collide with the medicine plate 13 under the rotation of the middle mold 3. Since the medicine plate 13 is inclined, the tablet will be guided to the sliding groove 14 and finally to the The collecting box 16, since there is usually residual powder around the tablet mold 5 when feeding, when the tablet slides in the sliding groove 14, since the tablet is in motion, it will be more efficient and thorough to suck out the powder on its surface through the first exhaust flexible branch pipe 49, and the powder will enter the exhaust pipe 47 through the first exhaust flexible branch pipe 49. Part of the powder will fall onto the partition 50 under the action of gravity, and part of it will pass through the cut tube 51, and the bottom end of the cut tube 51 is lower than the air outlet 52, so as to form a high and low staggered air duct between the bottom end of the cut tube 51 and the air outlet 52, so as to facilitate part of the powder to be deposited to the bottom of the separation tank 46 under the action of gravity.

[0043] Most of the medicine powder remaining around the sheet mold 5 will be sucked away by the first exhaust soft branch pipe 49 under the guidance of the medicine removing plate 13, and then the middle mold 3 continues to rotate until the sheet mold 5 enters the cleaning box 37. The cleaning box 37 is made of rubber material, which can better fit the surface of the middle mold 3, thereby creating and maintaining a relatively stable air duct. The inner side of the cleaning box 37 is open, and the airflow enters from the inner side of the cleaning box 37 and then is sucked out from the outer side of the cleaning box 37 and finally enters the separation tank 46 through the second exhaust soft branch pipe 53.

[0044] In order to clean the powder residue on the punch surfaces of the lower punch 8 and the upper punch 7, the upper punch 7 is squeezed against the extrusion column 40 during its rotation, so that the rubber cleaning surface of the extrusion column 40 is used to wipe the surface of the upper punch 7, and then the extrusion column 40 is pressed downward, so that the cleaning sponge column 44 at the lower end of the extrusion column 40 is displaced downward. During the displacement of the cleaning sponge column 44, the lower punch 8 is contacted to clean the side wall of the sheet mold 5, and the cleaned powder is extracted.

[0045] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0046] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A pharmaceutical tablet press, comprising a frame (1), wherein an upper die (2), a middle die (3) and a lower die (4) are rotatably arranged in parallel with each other on the frame (1), wherein a power device for driving the upper die (2), the middle die (3) and the lower die (4) to rotate synchronously is arranged on the frame (1), wherein a plurality of mounting holes (1) are evenly arranged on the circumference of the middle die (3), wherein a tablet die (5) is mounted on the mounting hole (1), and wherein a feeding device for feeding materials into the tablet die (5) one by one is also arranged on the frame (1), wherein the feeding device is characterized in that: The upper die (2) is provided with a plurality of mounting holes 2 evenly arranged in the circumferential direction, and the mounting holes 2 are provided with upper punches (7) via return springs 1 (6); the lower die (4) is provided with a plurality of mounting holes 3 evenly arranged in the circumferential direction, and the mounting holes 3 are provided with lower punches (8); an upper pressure plate (9) is provided on the frame (1) via bracket 1; a lower pressure plate (10) is also fixedly provided on the frame (1) via bracket 2; the lower pressure plate (10) is provided with a sheeting protrusion section (11) and a material ejection protrusion section (12); the upper die (2) and the middle die (3) are connected to each other. A medicine-pickling plate (13) is arranged between the middle mold (3), the bottom edge of the medicine-pickling plate (13) contacts the upper surface of the middle mold (3), the upper surface of the medicine-pickling plate (13) is flush with the bottom edge of the upper punch (7) when it is at the highest position on the upper mold (2), the outer edge of the medicine-pickling plate (13) is connected to a sliding groove (14), the sliding groove (14) is fixedly connected to the frame (1) through a bracket three (15), and a collecting box (16) is arranged at the bottom end of the sliding groove (14), and the collecting box (16) is fixed on the frame (1).

2. A pharmaceutical tablet press according to claim 1, characterized in that: The bracket 1 comprises a fixed seat 1 (17) and a sliding seat 1 (18), wherein the fixed seat 1 (17) is fixedly mounted on the frame (1), a plurality of locking bolts 1 (19) are mounted on the fixed seat 1 (17), and the sliding seat 1 (18) is slidably nested on the locking bolts 1 (19) through a strip sliding hole 1 (20), a pressure spring 1 (21) is arranged between the top of the fixed seat 1 (17) and the top of the sliding seat 1 (18), a limiting rod 1 (29) is fixedly mounted on the bottom end of the fixed seat 1 (17), and the sliding seat 1 (18) is fixedly connected to the upper pressure plate (9) through a support 1 (22).

3. A pharmaceutical tablet press according to claim 2, characterized in that: The bracket 2 comprises a fixed seat 2 (23) and a sliding seat 2 (24); the fixed seat 2 (23) is fixedly mounted on the frame (1); a plurality of locking bolts 2 (25) are mounted on the fixed seat 2 (23); the sliding seat 2 (24) is slidably nested on the locking bolts 2 (25) through a strip-shaped sliding hole 2 (26); a pressure spring 2 (27) is arranged between the bottom end of the fixed seat 2 (23) and the bottom end of the sliding seat 2 (24); a limiting rod 2 (30) is fixedly mounted on the top end of the fixed seat 1 (17); the sliding seat 2 (24) is fixedly connected to the lower pressure plate (10) through a pillar 2 (28).

4. A pharmaceutical tablet press according to claim 1, characterized in that: The feeding device comprises a feeding box (31), the feeding box (31) is fixedly mounted on the top of the frame (1), and a material guide pipe (32) is fixedly connected to the top of the feeding box (31).

5. A pharmaceutical tablet press according to claim 2, characterized in that: The power device comprises a motor seat (34), the motor seat (34) is fixedly mounted on the bottom end of the frame (1), a driving motor (35) is mounted on the motor seat (34), an output shaft of the driving motor (35) is fixedly connected to a driving shaft (36), and the upper mold (2), the middle mold (3) and the lower mold (4) are fixedly sleeved on the driving shaft (36).

6. A pharmaceutical tablet press according to claim 5, characterized in that: A cleaning box (37) is fixedly connected to the side of the medicine expelling plate (13) away from the second sliding seat (24), a sliding groove (38) is arranged in the cleaning box (37), an extrusion column (40) is installed in the sliding groove (38) through a second return spring (39), a cleaning sponge column (44) is fixedly connected to the bottom end of the extrusion column (40), and a rubber cleaning surface is arranged on the top end of the extrusion column (40).

7. A pharmaceutical tablet press according to claim 6, characterized in that: A mounting seat (45) is fixedly installed at the bottom end of the frame (1), and a separation tank (46) is installed on the mounting seat (45). The top end of the separation tank (46) is connected to an exhaust pipe (47), and a fan (48) for making the exhaust pipe (47) present a negative pressure is also fixedly installed at the top end of the separation tank (46). The exhaust pipe (47) is connected to the sliding groove (14) through a first exhaust flexible branch pipe (49). A partition (50) is fixedly installed in the separation tank (46), and a plurality of cut pipes (51) are connected and installed at the bottom of the partition (50). An air outlet (52) is connected and installed at the bottom end of the separation tank (46), and the bottom end of the air outlet (52) is higher than the lowest end of the cut pipe (51).

8. A pharmaceutical tablet press according to claim 7, characterized in that: The cleaning box (37) is connected to the exhaust pipe (47) via a second exhaust flexible branch pipe (53).

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