Adjustable mold for pharmaceutical tablet press

Abstract

The utility model discloses an adjustable die for a pharmaceutical tablet press, which relates to the technical field of pharmacy and comprises a bottom plate, a base is fixedly arranged on the bottom plate, a lower punching die is arranged above the base, and a buffer component used for relieving impact force of the lower punching die on the base is arranged on the base. The base is provided with an adjusting assembly used for changing the elastic force coefficient of the spring, and a medicine discharging assembly used for pushing the medicine out of the round hole is arranged below the multiple medicine lower dies. The adjusting assembly can adjust the spring to have different elastic force coefficients, the medicine upper die and the medicine lower die extrude medicine powder, the downward movement distance of the medicine upper die is fixed, and the different elastic force coefficients of the spring determine the extrusion force between the medicine upper die and the medicine lower die. The elastic force coefficient of the spring is adjusted according to the medicine powder with different adhesion degrees, it is ensured that the medicine powder with different adhesion degrees can be tableted without scattering, and the application range of the device is wide.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical technology, and in particular to an adjustable mold for a pharmaceutical tablet press. Background Technology

[0002] Pharmaceutical tablet presses are core equipment in the pharmaceutical industry used to compress granular or powdered materials into tablets, and are widely used in pharmaceuticals, health products, food, and chemical industries.

[0003] Different drug powders have different viscosity, and the stamping pressure must also be changed during stamping to avoid the drug failing to form or becoming loose due to excessive or insufficient stamping pressure. However, the existing tablet press mold structure is relatively fixed, making it difficult to adjust and limiting its applicability. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that it is difficult to adjust the viscosity of different pharmaceutical powders, and to propose an adjustable mold for a pharmaceutical tablet press.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0006] An adjustable mold for a pharmaceutical tableting machine includes a base plate, a base fixedly mounted on the base plate, a lower punch above the base plate, a plurality of circular holes on the lower punch plate, and a drug lower die slidably mounted in each of the plurality of circular holes. A drug ejection assembly for ejecting the drug from the circular holes is located below the plurality of drug lower dies. An upper punch is located above the base plate, and a buffer assembly for mitigating the impact force of the upper punch on the lower punch is located on the base plate. The buffer assembly contains two pairs of springs, and an adjustment assembly for changing the spring force coefficient is located on the base plate. A plurality of drug upper dies are fixedly mounted on the lower surface of the upper punch, and a first power shaft is fixedly mounted on the upper surface of the upper punch. Two pairs of fixing rods are fixedly mounted on the base plate, and both pairs of fixing rods are slidably connected to the lower punch.

[0007] Preferably, the buffer assembly includes two pairs of sliding grooves, two pairs of sliders, and two pairs of round rods. The two pairs of sliding grooves are all formed on the base, and the two pairs of sliders are slidably disposed in the two pairs of sliding grooves respectively. The lower ends of the two pairs of round rods are threaded and threadedly connected to the two pairs of sliders. The upper ends of the two pairs of round rods are slidably connected to the lower punch, and the lower ends of the two pairs of springs are fixedly connected to the two pairs of sliders respectively.

[0008] Preferably, the adjustment assembly includes two pairs of gears, a toothed belt, and a motor. The two pairs of gears are rotatably mounted inside the base. The two pairs of gears are respectively fixedly connected to the lower ends of two pairs of round rods. The toothed belt is sleeved on the two pairs of gears and meshes with the gears. The motor is fixedly mounted inside the base, and the motor output shaft is fixedly connected to one of the gears.

[0009] Preferably, two pairs of limiting rods are fixedly provided on the base, and both pairs of limiting rods are slidably connected to the lower punch.

[0010] Preferably, the dispensing assembly includes a fixed plate and a pair of cylinders. The fixed plate is fixedly disposed at the lower end of multiple drug lower dies, and the pair of cylinders are both fixedly disposed on the lower surface of the lower punch. The output ends of the pair of cylinders are both fixedly connected to the fixed plate.

[0011] Preferably, a storage basket is slidably mounted on the lower punch, and a second power shaft is fixedly mounted on one side of the storage basket.

[0012] Preferably, a collection box is fixedly provided on the base plate, with one side of the collection box closely attached to the side of the lower punch.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the adjusting component can adjust the spring to have different elastic coefficients. The upper and lower molds of the medicine extrude the medicine powder. The downward movement distance of the upper mold is fixed. The different elastic coefficients of the springs determine the amount of extrusion force between the upper and lower molds of the medicine. The elastic coefficient of the springs is adjusted according to the different viscosity of the medicine powder to ensure that the tablets can be compressed without falling apart for medicine powders with different viscosity, making the device applicable to a wide range of applications.

[0015] 2. In this utility model, the second power shaft drives the storage basket to slide towards the round hole. The side of the storage basket away from the second power shaft pushes the medicine on the upper surface of the lower punch into the collection box. The storage basket stops briefly, and the cylinder drives the fixing plate and multiple medicine lower molds to move downward to their original positions. The medicine powder in the storage basket falls into multiple round holes. The feeding of finished tablets and the feeding of medicine powder are completed by the movement of the storage basket alone, which is highly efficient. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the lower punch of this utility model;

[0019] Figure 3 This is a cross-sectional view of the base structure of this utility model;

[0020] Figure 4This is a schematic diagram showing the positional relationship between the slider, the round rod, and the gear of this utility model.

[0021] The numbers in the diagram are as follows: 1. Base plate; 11. Base; 12. Lower punch; 13. Round hole; 14. Lower medicine die; 15. Upper punch; 16. Upper medicine die; 17. First power shaft; 18. Fixed rod; 2. Slide groove; 21. Slider; 22. Round rod; 23. Spring; 3. Gear; 31. Toothed belt; 32. Motor; 4. Limiting rod; 5. Fixed plate; 51. Cylinder; 6. Storage basket; 61. Second power shaft; 7. Collection box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example: This example provides an adjustable mold for a pharmaceutical tableting machine. See [link to example]. Figure 1-4 Specifically, the base plate 1 is fixedly provided with a base 11, a lower punch 12 is provided above the base 11, a plurality of round holes 13 are provided on the lower punch 12, a medicine lower die 14 is slidably provided in each of the plurality of round holes 13, a medicine dispensing component is provided below the plurality of medicine lower dies 14 for dispensing medicine out of the round holes 13, an upper punch 15 is provided above the base 11, a buffer component is provided on the base 11 for relieving the impact of the upper punch 15 on the lower punch 12, two pairs of springs 23 are provided in the buffer component, an adjustment component is provided on the base 11 for changing the spring force coefficient of the springs 23, a plurality of medicine upper dies 16 are fixedly provided on the lower surface of the upper punch 15, a first power shaft 17 is fixedly provided on the upper surface of the upper punch 15, and two pairs of fixing rods 18 are fixedly provided on the base plate 1, both pairs of fixing rods 18 are slidably connected to the lower punch 12;

[0025] The spring force coefficient of the spring 23 in the buffer assembly is adjusted by the adjustment component. The powder is filled into the multiple round holes 13. The first power shaft 17 is connected to the power unit. The power unit drives the upper punch 15 to move downward through the first power shaft 17. The upper punch 15 drives the multiple upper drug dies 16 to move downward. The multiple upper drug dies 16 are inserted into the multiple round holes 13 respectively. The upper drug dies 16 drive the lower drug dies 14 and the lower punch 12 to move downward together. During this process, the upper drug dies 16 and the lower drug dies 14 squeeze the powder. The downward movement distance of the upper drug dies 16 is fixed. The different spring force coefficients of the spring 23 determine the squeezing force between the upper drug dies 16 and the lower drug dies 14. The spring force coefficient of the spring 23 is adjusted according to the powder with different viscosity to ensure that the tablets can be compressed without falling apart for powders with different viscosity. After the tableting process is completed, the dispensing component pushes the medicine out of the round holes 13.

[0026] The buffer assembly includes two pairs of sliding grooves 2, two pairs of sliders 21 and two pairs of round rods 22. The two pairs of sliding grooves 2 are all opened on the base 11. The two pairs of sliders 21 are slidably arranged in the two pairs of sliding grooves 2 respectively. The lower ends of the two pairs of round rods 22 are threaded and threadedly connected to the two pairs of sliders 21. The upper ends of the two pairs of round rods 22 are slidably connected to the lower punch 12. The lower ends of the two pairs of springs 23 are fixedly connected to the two pairs of sliders 21 respectively.

[0027] The lower die 12 moves downward, compresses the spring 23, and the spring 23 buffers the punching force between the upper die 15 and the lower die 12. The round rod 22 is inserted into the lower die 12.

[0028] The adjustment assembly includes two pairs of gears 3, a toothed belt 31, and a motor 32. The two pairs of gears 3 are rotatably mounted in the base 11. The two pairs of gears 3 are fixedly connected to the lower ends of the two pairs of round rods 22 respectively. The toothed belt 31 is sleeved on the two pairs of gears 3 and meshes with the gears 3. The motor 32 is fixedly mounted in the base 11, and the output shaft of the motor 32 is fixedly connected to one of the gears 3.

[0029] Motor 32 drives a gear 3 to rotate, which drives other gears 3 to rotate via toothed belt 31. The two pairs of gears 3 drive two pairs of round rods 22 to rotate, and the round rods 22 drive the slider 21 to move up and down along the slide groove 2, so that the slider 21 compresses the spring 23 to different degrees, which in turn changes the elastic coefficient of the spring 23 in the current state. The greater the compression, the greater the elastic coefficient, which increases or decreases the punching force between the upper punch 15 and the lower punch 12, ensuring that the tablets can be compressed without breaking apart for powders of different viscosities.

[0030] Two pairs of limiting rods 4 are fixedly provided on the base 11, and both pairs of limiting rods 4 are slidably connected to the lower punch 12;

[0031] The limit rod 4 restricts the highest position of the lower punch 12 and works in conjunction with the buffer assembly.

[0032] The dispensing assembly includes a fixed plate 5 and a pair of cylinders 51. The fixed plate 5 is fixedly installed at the lower end of multiple drug lower molds 14, and the pair of cylinders 51 are both fixedly installed on the lower surface of the lower punch 12. The output ends of the pair of cylinders 51 are both fixedly connected to the fixed plate 5.

[0033] After the drug tableting process is completed, the cylinder 51 pushes the fixed plate 5 upward through the output end. The fixed plate 5 drives multiple lower drug molds 14 to move upward. The multiple lower drug molds 14 push the tableted drug out of the round hole 13. The upper end of the lower drug mold 14 is completely flush with the upper surface of the lower punch 12.

[0034] A storage basket 6 is slidably mounted on the lower punch 12, and a second power shaft 61 is fixedly mounted on one side of the storage basket 6;

[0035] The second power shaft 61 is connected to an external power unit. The power unit drives the second power shaft 61 to move towards the side of the round hole 13. The second power shaft 61 drives the storage basket 6 to slide towards the side of the round hole 13. The side of the storage basket 6 away from the second power shaft 61 pushes the medicine on the upper surface of the lower punch 12 away from the medicine lower die 14. After all the medicine is pushed away, the storage basket 6 stops briefly. The cylinder 51 drives the fixing plate 5 and multiple medicine lower dies 14 to move downward to the original position. The medicine powder in the storage basket 6 falls into multiple round holes 13. The round holes 13 then drive the storage basket 6 back to the original position.

[0036] A collection box 7 is fixedly installed on the base plate 1, with one side of the collection box 7 closely attached to one side of the lower punch 12;

[0037] The storage basket 6 pushes the medicine away from the medicine lower mold 14, and the medicine falls into the collection box 7 for centralized collection.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable mold for a pharmaceutical tablet press, comprising a base plate (1), characterized in that: A base (11) is fixedly mounted on the base plate (1). A lower punch (12) is mounted above the base (11). The lower punch (12) has multiple round holes (13). A lower medicine die (14) is slidably mounted in each of the multiple round holes (13). A medicine ejection assembly for ejecting medicine from the round holes (13) is located below the multiple lower medicine dies (14). An upper punch (15) is mounted above the base (11). The base (11) is equipped with a mechanism to alleviate the pressure of the upper punch (15) on the lower medicine die. The lower punch (12) has a buffer assembly for impact force, and the buffer assembly is provided with two pairs of springs (23). The base (11) is provided with an adjustment assembly for changing the elastic coefficient of the springs (23). The lower surface of the upper punch (15) is fixedly provided with multiple upper drug molds (16). The upper surface of the upper punch (15) is fixedly provided with a first power shaft (17). The base plate (1) is fixedly provided with two pairs of fixing rods (18). Both pairs of fixing rods (18) are slidably connected to the lower punch (12).

2. The adjustable die for pharmaceutical tablet press according to claim 1, wherein: The buffer assembly includes two pairs of grooves (2), two pairs of sliders (21), and two pairs of round rods (22). The two pairs of grooves (2) are all opened on the base (11). The two pairs of sliders (21) are slidably arranged in the two pairs of grooves (2). The lower ends of the two pairs of round rods (22) are threaded and threadedly connected to the two pairs of sliders (21). The upper ends of the two pairs of round rods (22) are slidably connected to the lower punch (12). The lower ends of the two pairs of springs (23) are fixedly connected to the two pairs of sliders (21).

3. The adjustable die for pharmaceutical tablet presses according to claim 2, characterized in that: The adjustment assembly includes two pairs of gears (3), a toothed belt (31), and a motor (32). The two pairs of gears (3) are rotatably mounted in the base (11). The two pairs of gears (3) are fixedly connected to the lower ends of two pairs of round rods (22). The toothed belt (31) is sleeved on the two pairs of gears (3) and meshes with the gears (3). The motor (32) is fixedly mounted in the base (11). The output shaft of the motor (32) is fixedly connected to one of the gears (3).

4. The adjustable die for pharmaceutical tablet presses of claim 1, wherein: Two pairs of limiting rods (4) are fixedly provided on the base (11), and both pairs of limiting rods (4) are slidably connected to the lower punch (12).

5. The adjustable die for pharmaceutical tablet presses of claim 1, wherein: The dispensing assembly includes a fixed plate (5) and a pair of cylinders (51). The fixed plate (5) is fixedly disposed at the lower end of multiple drug lower molds (14). The pair of cylinders (51) are both fixedly disposed on the lower surface of the lower punch (12). The output ends of the pair of cylinders (51) are both fixedly connected to the fixed plate (5).

6. The adjustable die for pharmaceutical tablet presses of claim 1, wherein: A storage basket (6) is slidably mounted on the lower punch (12), and a second power shaft (61) is fixedly mounted on one side of the storage basket (6).

7. The adjustable die for pharmaceutical tablet presses of claim 1, wherein: A collection box (7) is fixedly provided on the base plate (1), and one side of the collection box (7) is closely attached to one side of the lower punch (12).

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