Multi-size punch group of pharmaceutical tablet press

Abstract

The utility model relates to the technical field of biological pharmacy, and discloses a multi-size punch group of a pharmaceutical tablet press, which comprises an upper punch mounting rack, the bottom of the upper punch mounting rack is fixedly connected with a die mounting rack, and the bottom of the die mounting rack is fixedly connected with a lower punch mounting rack. An upper punch main rod is slidably connected to the interior of the upper punch mounting frame, a buffer assembly is mounted at the bottom of the upper punch main rod, a punch head is arranged in the buffer assembly, a tabletting die is slidably connected to the interior of the die mounting frame, and a lower punch is slidably connected to the interior of the lower punch mounting frame. According to the utility model, under the cooperation of the empty groove, the buffer spring, the limiting block and the limiting groove, the excessive impact force generated when the upper punch is pressed down is effectively relieved, the impact force is prevented from directly acting on the tablet pressing die and the lower punch, the abrasion of equipment is reduced, and the uniformity and the stability of tablets in the pressing process are ensured.

Description

Technical Field

[0001] This utility model relates to the field of biopharmaceutical technology, and in particular to a multi-size punch assembly for a pharmaceutical tablet press. Background Technology

[0002] The punch assembly of a pharmaceutical tablet press is a flexible tool system that allows the production line to be quickly adjusted to adapt to the pressing of various drugs, ensuring drug consistency and quality. The punch assembly can improve production efficiency, reduce downtime, and support diverse product specifications. It is particularly suitable for large-scale production and multi-variety drug production environments. Its flexibility and adjustability are important advantages in modern pharmaceutical production.

[0003] The punch assembly of a pharmaceutical tablet press mainly consists of an upper punch, a lower punch, and a die. The upper and lower punches are located at opposite ends of the die and are responsible for pressing the drug powder. During operation, the drug powder is placed into the die cavity. Through the downward pressure of the upper punch and the support of the lower punch, the drug powder is compacted to form a tablet. Different punch sizes allow for adjustments to the size, shape, and weight of the tablets to meet different production needs, enabling the production of tablets of different specifications and ensuring the consistency of tablet pressing quality.

[0004] Existing pharmaceutical tablet presses have punch sets that can produce tablets of different sizes and ensure consistent tablet quality. However, when the upper punch presses down, excessive impact force can cause excessive compression of the lower punch and mold, which in turn accelerates the wear and deformation of equipment parts, reduces the service life of the equipment, and leads to tablet quality problems. Therefore, a multi-size punch set for pharmaceutical tablet presses is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-size punch assembly for a pharmaceutical tablet press, aiming to improve the problem in the prior art where excessive impact force during the downward pressing of the upper punch affects the quality of the tablets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-size punch assembly for a pharmaceutical tablet compressor includes an upper punch mounting bracket, a mold mounting bracket fixedly connected to the bottom of the upper punch mounting bracket, a lower punch mounting bracket fixedly connected to the bottom of the mold mounting bracket, an upper punch main rod slidably connected inside the upper punch mounting bracket, a buffer assembly installed at the bottom of the upper punch main rod, a punch head disposed inside the buffer assembly, a tableting mold slidably connected inside the mold mounting bracket, a lower punch slidably connected inside the lower punch mounting bracket, and a quick-change assembly installed inside the buffer assembly. The buffer assembly includes a connecting block slidably connected to the bottom of the upper punch main rod, and a slot is formed inside the connecting block, with the punch head slidably connected inside the slot.

[0008] As a further description of the above technical solution:

[0009] A buffer spring is provided inside the empty slot, and the buffer spring is disposed between the empty slot and the punch head.

[0010] As a further description of the above technical solution:

[0011] The quick-change assembly includes a fixed housing, which is fixedly connected inside the connecting block. A plug rod is slidably connected inside the connecting block, and a movable plate is fixedly connected to the bottom of the plug rod.

[0012] As a further description of the above technical solution:

[0013] A baffle is fixedly connected to the outside of the insertion rod, and a telescopic spring is sleeved on the outer periphery of the insertion rod;

[0014] As a further description of the above technical solution:

[0015] The bottom of the upper punch main rod is provided with a slot, and the insert rod is engaged with the slot.

[0016] As a further description of the above technical solution:

[0017] The bottom of the upper punch main rod is fixedly connected to a slider, and the top of the connecting block is provided with a sliding groove, and the slider is slidably connected inside the sliding groove;

[0018] As a further description of the above technical solution:

[0019] A limiting block is fixedly connected to the side of the punch head, and a limiting groove is formed inside the connecting block. The limiting block is slidably connected inside the limiting groove.

[0020] As a further description of the above technical solution:

[0021] The upper punch main rod, the punch head, the pressing mold, the lower punch, and the connecting block are all made of tungsten steel.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the combination of the empty groove, buffer spring, limiting block and limiting groove effectively reduces the excessive impact force generated when the upper punch presses down, avoids direct action on the tableting mold and lower punch, reduces equipment wear, extends service life, and at the same time ensures the uniformity and stability of the tablets during the pressing process.

[0024] 2. In this utility model, the combination of telescopic spring, moving plate and insert rod enables easy and quick disassembly and replacement of punch heads of different sizes, improving replacement efficiency, reducing downtime, making the production line more flexible and adaptable to diverse production needs. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the multi-size punch assembly of the pharmaceutical tablet press proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connecting block of the multi-size punch assembly of the pharmaceutical tablet press proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the fixing shell of the multi-size punch assembly of the pharmaceutical tablet press proposed in this utility model.

[0028] Legend:

[0029] 1. Upper punch mounting bracket; 2. Mold mounting bracket; 3. Lower punch mounting bracket; 4. Upper punch main rod; 5. Buffer assembly; 6. Punch head; 7. Pressing mold; 8. Lower punch; 9. Quick change assembly; 10. Connecting block; 11. Empty slot; 12. Buffer spring; 13. Limiting block; 14. Limiting slot; 15. Fixed shell; 16. Insert rod; 17. Moving plate; 18. Baffle; 19. Telescopic spring; 20. Slot; 21. Slider; 22. Slide groove. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 and Figure 2This utility model provides an embodiment of a multi-size punch assembly for a pharmaceutical tablet press, including an upper punch mounting frame 1, a mold mounting frame 2 fixedly connected to the bottom of the upper punch mounting frame 1, a lower punch mounting frame 3 fixedly connected to the bottom of the mold mounting frame 2, an upper punch main rod 4 slidably connected inside the upper punch mounting frame 1, a buffer assembly 5 installed at the bottom of the upper punch main rod 4, a punch head 6 disposed inside the buffer assembly 5, a tablet pressing mold 7 slidably connected inside the mold mounting frame 2, a lower punch 8 slidably connected inside the lower punch mounting frame 3, and a quick-change assembly 9 installed inside the buffer assembly 5; the buffer assembly 5 includes a connecting block 10, which is slidably connected to the bottom of the upper punch main rod 4 and connects the internal structure using the connecting block 10; a slot 11 is provided inside the connecting block 10, and the punch head 6 is slidably connected inside the slot 11, and moves within the slot 11 under force. A buffer spring 12 is installed inside the empty groove 11. The buffer spring 12 is located between the empty groove 11 and the punch head 6. When the punch head 6 moves, it compresses the buffer spring 12 to relieve excessive impact force.

[0032] Reference Figure 1 and Figure 3 The quick-change assembly 9 includes a fixed housing 15, which is fixedly connected inside the connecting block 10 to protect the internal structure. A rod 16 is slidably connected inside the connecting block 10. A moving plate 17 is fixedly connected to the bottom of the rod 16; the moving plate 17 moves, taking the rod 16 with it. A baffle 18 is fixedly connected to the outside of the rod 16, and a telescopic spring 19 is fitted around the outer periphery of the rod 16. The pressure generated by the cooperation of the baffle 18 and the telescopic spring 19 causes the rod 16 to move upward. A slot 20 is provided at the bottom of the upper punch main rod 4, and the rod 16 engages with the slot 20. As the rod 16 moves upward, it engages with the slot 20.

[0033] Reference Figure 1 - Figure 3 The upper punch main rod 4 has a slider 21 fixedly connected to its bottom. The top of the connecting block 10 has a groove 22, and the slider 21 is slidably connected inside the groove 22. The slider 21 and the groove 22 cooperate to limit the fixed position of the connecting block 10. The side of the punch head 6 is fixedly connected to a limit block 13, and the inside of the connecting block 10 has a limit groove 14. The limit block 13 is slidably connected inside the limit groove 14. The limit block 13 and the limit groove 14 cooperate to prevent the punch head 6 from sliding out of the connecting block 10. The upper punch main rod 4, punch head 6, pressing mold 7, lower punch 8 and connecting block 10 are all made of tungsten steel, which has extremely high hardness and wear resistance and can withstand long-term high pressure and friction.

[0034] Working principle: When the upper punch presses down, the punch head 6 first contacts the tableting mold 7 and the lower punch 8. The impact force of the downward press causes the punch head 6 to move in the slot 11, squeezing the buffer spring 12. The buffer spring 12 relieves the excess impact force, avoids damage to the tableting mold 7 and the lower punch 8, and ensures the quality of the tablets.

[0035] When it is necessary to replace the punch with a different size, the insert rod 16 is pulled outward by the moving plate 17 to disengage it from the slot 20. The currently used punch head 6 can then be slid out and removed. The slide groove 22 of the punch head 6 to be replaced is slid onto the slider 21. When the insert rod 16 is aligned with the slot 20, the pressure generated by the baffle 18 and the telescopic spring 19 causes the insert rod 16 to move upward and engage in the slot 20, thus completing the replacement of the punch head 6 and improving the work efficiency of replacing the punch head 6.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A set of punches of different sizes for a pharmaceutical tablet press, comprising a punch mounting frame (1), characterized in that: The bottom of the upper punch mounting frame (1) is fixedly connected with a die mounting frame (2), the bottom of the die mounting frame (2) is fixedly connected with a lower punch mounting frame (3), the inside of the upper punch mounting frame (1) is slidably connected with an upper punch main rod (4), the bottom of the upper punch main rod (4) is provided with a buffer assembly (5), the inside of the buffer assembly (5) is provided with a punch head (6), the inside of the die mounting frame (2) is slidably connected with a tablet die (7), the inside of the lower punch mounting frame (3) is slidably connected with a lower punch (8), and the inside of the buffer assembly (5) is provided with a quick-change assembly (9). The buffer assembly (5) comprises a connecting block (10) which is slidably connected to the bottom of the upper punch main rod (4), and the inside of the connecting block (10) is provided with a hollow groove (11), and the punch head (6) is slidably connected to the inside of the hollow groove (11).

2. The multi-size punch set of a pharmaceutical tablet press according to claim 1, wherein: The inside of the hollow groove (11) is provided with a buffer spring (12), and the buffer spring (12) is arranged between the hollow groove (11) and the punch head (6).

3. The multi-size punch set of a pharmaceutical tablet press as claimed in claim 1, wherein: The quick-change assembly (9) comprises a fixed shell (15) which is fixedly connected to the inside of the connecting block (10), and the inside of the connecting block (10) is slidably connected with a plug rod (16), and the bottom of the plug rod (16) is fixedly connected with a moving plate (17).

4. The multi-size punch set of a pharmaceutical tablet press according to claim 3, wherein: The outer side of the plug rod (16) is fixedly connected with a baffle (18), and the outer periphery of the plug rod (16) is provided with a telescopic spring (19).

5. The multi-size punch set of a pharmaceutical tablet press according to claim 3, wherein: The bottom of the upper punch main rod (4) is provided with a plug slot (20), and the plug rod (16) and the plug slot (20) are mutually clamped.

6. The multi-size punch set of a pharmaceutical tablet press according to claim 1, wherein: The bottom of the upper punch main rod (4) is fixedly connected with a sliding block (21), and the top of the connecting block (10) is provided with a sliding groove (22), and the sliding block (21) is slidably connected to the inside of the sliding groove (22).

7. The multi-size punch set of a pharmaceutical tablet press according to claim 1, wherein: The side of the punch head (6) is fixedly connected with a limiting block (13), the inside of the connecting block (10) is provided with a limiting groove (14), and the limiting block (13) is slidably connected to the inside of the limiting groove (14).

8. The multi-size punch set of a pharmaceutical tablet press according to claim 1, wherein: The upper punch main rod (4), the punch head (6), the tablet die (7), the lower punch (8) and the connecting block (10) are all made of tungsten steel material.

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