Tablet forming die

Abstract

The utility model discloses a tablet forming die which comprises a die body, a plurality of die holes are formed in the top of the die body, a plurality of L-shaped hole grooves are evenly formed in the inner wall of one side of the die body, the L-shaped hole grooves are located under the adjacent die holes, and spring pistons are installed in the L-shaped hole grooves in a sliding mode. And the movable ends of the multiple spring pistons penetrate through the L-shaped hole grooves and are fixedly connected with ejector blocks, and a first piston is arranged in the mold body in a sealed and sliding mode. According to the utility model, through the arrangement of the L-shaped hole groove, the spring piston, the ejector block, the first piston, the guide rod, the mounting seat, the shell, the stroke hole, the second piston, the guide plate, the assembly seat, the fixed pipe, the air cylinder, the electromagnetic valve, the U-shaped elastic piston and the hopper, the whole body adopts a linkage design, and the die is subjected to ejection, discharging and feeding operations by utilizing kinetic energy generated by the up-down movement of the punch; the arrangement of a driving device is reduced, and the manufacturing cost and the use energy consumption are reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a tablet forming mold. Background Technology

[0002] Direct powder compression is a technique that involves mixing drug powder with excipients and then compressing the mixture into tablets without a granulation process. Pharmaceutical tableting dies typically consist of a punch and a die. The punch moves up and down during compression, shaping the tablets into their desired shape and size using the die.

[0003] Currently, when using tablet forming molds, additional power structures are required for punch downward movement, tablet ejection, tablet discharge, and feeding. The movement of the punch cannot be used to control the operation of the other steps, resulting in high overall manufacturing costs. Therefore, a new tablet forming mold is proposed. Utility Model Content

[0004] This utility model is a tablet forming mold proposed to overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tablet forming mold, comprising a mold body, wherein the top of the mold body is provided with a plurality of mold holes, and a plurality of L-shaped slots are uniformly provided on one side inner wall of the mold body, and the L-shaped slots are located directly below adjacent mold holes. Spring pistons are slidably installed inside the plurality of L-shaped slots, and the movable ends of the plurality of spring pistons are provided through the L-shaped slots and fixedly connected to a top block. A first piston is slidably sealed inside the mold body, and a guide rod is fixedly connected to one side of the outer surface of the first piston. An electromagnetic valve is fixedly connected through the bottom of the mold body.

[0006] The guide rod is fixedly connected to a mounting base at the end away from the first piston. A housing is fixedly connected to one side of the outer surface of the mounting base. A stroke hole extending through to the interior is opened on one side of the outer surface of the housing. A second piston is slidably sealed inside the housing. A guide plate is fixedly connected to the top of the second piston. The guide plate is disposed through the housing and slides with the seal. An assembly base is fixedly connected to the top of the guide plate. Multiple punches are evenly fixedly connected to the bottom of the assembly base.

[0007] Two fixed tubes are symmetrically fixed through one side of the outer surface of the shell, and an air cylinder is fixedly connected to the other end of each of the two fixed tubes. A U-shaped elastic piston is installed between each of the two air cylinders and the mold body.

[0008] The top of the mold body is sealed with a hopper.

[0009] Furthermore, each of the multiple spring pistons includes a T-shaped piston, and the T-shaped piston is sealed and fitted to the inner wall of the adjacent L-shaped slot. One end of the T-shaped piston passes through the adjacent L-shaped slot and is fixedly connected to the adjacent top block. A first spring is fixedly connected to the top of the T-shaped piston.

[0010] Furthermore, all of the aforementioned top blocks slide in contact with the inner wall of the adjacent mold hole.

[0011] Furthermore, the outer surface of both the mold body and the two air cylinders is provided with air holes that extend into the interior.

[0012] Furthermore, the guide rod is disposed through the mold body and slidably connected thereto.

[0013] Furthermore, each of the aforementioned punches is matched with an adjacent die hole.

[0014] Furthermore, both of the U-shaped elastic pistons include a third piston, and the third piston slides in a sealed manner with the inner wall of the adjacent air cylinder. A U-shaped rod is fixedly connected to one side of the outer surface of the third piston, and the U-shaped rod passes through the air cylinder and is slidably connected to it. The U-shaped rod is fixedly connected to the mold body, and two second springs are fixedly connected to the third piston and the air cylinder.

[0015] Furthermore, an inclined discharge trough is fixedly connected to one side of the outer surface of the housing.

[0016] The beneficial effects of this utility model are:

[0017] In use, this utility model is a tablet forming mold that uses an L-shaped slot, spring piston, top block, first piston, guide rod, mounting base, outer shell, stroke hole, second piston, guide plate, assembly base, fixing pipe, air cylinder, solenoid valve, U-shaped elastic piston and hopper. The whole is designed in a linkage manner. The kinetic energy generated by the up and down movement of the punch is used for the mold to perform ejection, discharge and loading operations, reducing the need for a drive device and reducing manufacturing costs and energy consumption. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 : A perspective view of this utility model;

[0020] Figure 2 : A cross-sectional view of this utility model;

[0021] Figure 3 : A cross-sectional view of the air cylinder of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Mold body; 2. Hopper; 3. Assembly base; 4. Guide plate; 5. U-shaped rod; 6. Mounting base; 7. Air cylinder; 8. Fixing pipe; 9. Outer shell; 10. Stroke hole; 11. Punch; 12. Mold hole; 13. Ejector block; 14. First spring; 15. T-shaped piston; 16. Second piston; 17. Air hole; 18. L-shaped slot; 19. Guide rod; 20. First piston; 21. Discharge groove; 22. Second spring; 23. Third piston. Detailed Implementation

[0024] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 3 As shown, a tablet forming mold is disclosed, comprising a mold body 1. The top of the mold body 1 has multiple mold holes 12. One inner wall of the mold body 1 has multiple L-shaped grooves 18 evenly distributed, with each L-shaped groove 18 located directly below an adjacent mold hole 12. Spring pistons are slidably mounted inside each L-shaped groove 18. The movable ends of each spring piston pass through the L-shaped groove 18 and are fixedly connected to a top block 13. Each spring piston includes a T-shaped piston 15, which is sealed and fitted against the inner wall of the adjacent L-shaped groove 18. One end of the T-shaped piston 15 passes through the adjacent L-shaped groove 18 and is fixedly connected to the adjacent top block 13. A first spring 14 is fixedly connected to the top of the T-shaped piston 15. The movement stroke of the 8 pairs of T-shaped pistons 15 is limited to ensure that when the top block 13 rises to the top, its top is at the same level as the top of the mold body 1. Multiple top blocks 13 slide against the inner wall of the adjacent mold hole 12, which is conducive to forming the tablet and also to ejecting the formed tablet. The mold body 1 has a first piston 20 that slides inside in a sealed manner. A guide rod 19 is fixedly connected to one side of the outer surface of the first piston 20. The guide rod 19 passes through the mold body 1 and is slidably connected to it. The guide rod 19 and the mold body 1 have a limiting effect to ensure the stability of the movement of the mold body 1. A solenoid valve is fixedly connected to the bottom of the mold body 1. The solenoid valve can control whether the inside of the mold body 1 located on the side of the L-shaped groove 18 is connected to the outside.

[0026] A mounting base 6 is fixedly connected to the end of the guide rod 19 away from the first piston 20. A housing 9 is fixedly connected to one side of the outer surface of the mounting base 6. A stroke hole 10 extending into the interior is opened on one side of the outer surface of the housing 9. A second piston 16 is slidably sealed inside the housing 9. A guide plate 4 is fixedly connected to the top of the second piston 16 and is disposed through the housing 9 and slides in a sealed manner. An assembly base 3 is fixedly connected to the top of the guide plate 4. Multiple punches 11 are evenly fixedly connected to the bottom of the assembly base 3. Each punch 11 is matched with an adjacent die hole 12. The punches 11 and the die hole 12 can cooperate to compress tablets.

[0027] Two fixed tubes 8 are symmetrically fixed through one side of the outer surface of the outer shell 9. The other end of each fixed tube 8 is fixedly connected to an air cylinder 7. Both air cylinders 7 are connected to the mold body 1 with a U-shaped elastic piston. Both U-shaped elastic pistons include a third piston 23. The third piston 23 is sealed and slides with the inner wall of the adjacent air cylinder 7. A U-shaped rod 5 is fixedly connected to one side of the outer surface of the third piston 23. The U-shaped rod 5 passes through the air cylinder 7 and is slidably connected to it. The U-shaped rod 5 is fixedly connected to the mold body 1. Two second springs 22 are fixedly connected to the third piston 23 and the air cylinder 7. In the absence of external force, the second springs 22 keep the third piston 23 in its original position under their own elastic force.

[0028] The top of the mold body 1 is sealed with a hopper 2, which is used for adding materials.

[0029] The outer surface of both the mold body 1 and the two air cylinders 7 is provided with air holes 17 that penetrate into the interior, which can reduce the movement resistance of the first piston 20 and the third piston 23.

[0030] An inclined discharge trough 21 is fixedly connected to one side of the outer surface of the outer casing 9.

[0031] Working principle: First, the entire assembly is installed on the existing stamping equipment. The mounting base 3 is fixedly installed on the stamping head of the stamping machine, and the mounting base 6 is fixedly installed on the worktable. The hopper 2 can be fixedly connected to the mounting base 9 or the worktable of the stamping equipment using an existing L-shaped steel plate. The installation position of the L-shaped steel plate should avoid affecting the overall use. During daily use, after the tablets are pressed, the mounting base 3 rises under the action of the stamping equipment, which will drive the guide plate 4 and the second piston 16 to rise, and at the same time drive the punch 11 to rise. When the punch 11 moves out of the die hole 12, the second piston 16 is partially higher than the stroke hole 10. At this time, the inside of the outer shell 9 is in a closed state. As the second piston 16 rises, it will force the air at the top of the outer shell 9 into the two fixed pipes 8, and then into the air cylinder 7 to push the corresponding third piston 23 away from the outer shell 9. 23. The U-shaped rod 5 drives the mold body 1 away from the outer shell 9. Since the guide rod 19 is fixed, the first piston 20 compresses the gas space inside the mold body 1. The gas enters each L-shaped slot 17 and then pushes the top block 13 up through the T-shaped piston 15, pushing the tablet out of the mold hole 12. When the tablet comes into contact with the hopper 2, it will be gradually pushed to the edge of the mold 1 until it falls onto the discharge groove 21. At this time, multiple mold holes 12 are located below the hopper 2. The solenoid valve controls the connection between the inside and outside of the mold 1. The first spring 14 drives the top block 13 to reset through the T-shaped piston 15. The powder in the hopper 2 falls into the mold hole 12 and then the tableting operation is performed again. The punch 11, the second piston 16 and other components are reset. Then the third piston 23 is reset under the action of the second spring 22 and the negative pressure, thereby driving the mold body 1 to reset through the U-shaped rod 5.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tablet forming mold, comprising a mold body (1), characterized in that: The top of the mold body (1) is provided with multiple mold holes (12), and the inner wall of one side of the mold body (1) is provided with multiple L-shaped slots (18), and the L-shaped slots (18) are located directly below the adjacent mold holes (12). Spring pistons are slidably installed inside the multiple L-shaped slots (18), and the movable ends of the multiple spring pistons are set through the L-shaped slots (18) and fixedly connected to the top block (13). The mold body (1) is sealed and slidably provided with a first piston (20), and a guide rod (19) is fixedly connected to one side of the outer surface of the first piston (20). A solenoid valve is fixedly connected to the bottom of the mold body (1). The guide rod (19) is fixedly connected to a mounting base (6) at the end away from the first piston (20). A housing (9) is fixedly connected to one side of the outer surface of the mounting base (6). A stroke hole (10) is opened on one side of the outer surface of the housing (9) and extends into the interior. A second piston (16) is sealed and slides inside the housing (9). A guide plate (4) is fixedly connected to the top of the second piston (16) and is disposed through the housing (9) and slides in a sealed manner. An assembly base (3) is fixedly connected to the top of the guide plate (4). Multiple punches (11) are evenly fixedly connected to the bottom of the assembly base (3). Two fixed tubes (8) are symmetrically fixed through one side of the outer surface of the outer shell (9), and air cylinders (7) are fixed through the other end of the two fixed tubes (8). A U-shaped elastic piston is installed between the two air cylinders (7) and the mold body (1). The top of the mold body (1) is sealed with a hopper (2).

2. The tablet forming mold according to claim 1, characterized in that: Each of the aforementioned spring pistons includes a T-shaped piston (15), and the T-shaped piston (15) is sealed and fitted to the inner wall of the adjacent L-shaped groove (18). One end of the T-shaped piston (15) passes through the adjacent L-shaped groove (18) and is fixedly connected to the adjacent top block (13). A first spring (14) is fixedly connected to the top of the T-shaped piston (15).

3. The tablet forming mold according to claim 1, characterized in that: Each of the top blocks (13) slides in contact with the inner wall of the adjacent mold hole (12).

4. The tablet forming mold according to claim 1, characterized in that: The outer surface of both the mold body (1) and the two air cylinders (7) is provided with air holes (17) that penetrate into the interior.

5. A tablet forming mold according to claim 1, characterized in that: The guide rod (19) is set through the mold body (1) and slidably connected to it.

6. A tablet forming mold according to claim 1, characterized in that: Each of the punches (11) is matched with an adjacent die hole (12).

7. A tablet forming mold according to claim 1, characterized in that: Both of the U-shaped elastic pistons include a third piston (23), and the third piston (23) slides in a sealed manner with the inner wall of the adjacent air cylinder (7). A U-shaped rod (5) is fixedly connected to one side of the outer surface of the third piston (23), and the U-shaped rod (5) passes through the air cylinder (7) and is slidably connected to it. The U-shaped rod (5) is fixedly connected to the mold body (1), and two second springs (22) are fixedly connected between the third piston (23) and the air cylinder (7).

8. A tablet forming mold according to claim 1, characterized in that: An inclined discharge trough (21) is fixedly connected to one side of the outer surface of the outer shell (9).

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