An adjustable pharmaceutical tableting die structure

Abstract

This utility model discloses an adjustable pharmaceutical tableting die structure, including an upper punch and a lower punch. A middle die frame is provided at the bottom of the upper punch. One end of a chuck is respectively engaged at both ends of the middle die frame. A slide rod is slidably sleeved at the middle of the chuck. Support seats are fixedly connected to both ends of the slide rod. The support seats are fixedly connected to both ends of a workbench frame. The workbench is mounted at the bottom of the middle die frame. Hinge seats are hinged to the bottom ends of the chucks. The hinge seats are fixedly connected to both ends of a movable plate. The movable plate is movably mounted at the bottom of the workbench frame. An external threaded cylinder is sleeved at the middle of the movable plate via a threaded structure. One end of the external threaded cylinder is rotatably connected to the bottom end of the workbench frame. An adjusting cap is fixedly connected to the other end of the external threaded cylinder. A lower punch is provided at the bottom of the adjusting cap. The chucks press and limit the middle die frame, ensuring the stability of the middle die frame's position.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical tablet manufacturing technology, specifically to an adjustable pharmaceutical tableting die structure. Background Technology

[0002] Tablets are the most common dosage form in pharmaceutical preparations, and tablet press dies are an indispensable accessory on tablet presses, which are the most commonly used tablet equipment.

[0003] The feeding and pressing mechanism of a single-punch tablet press disclosed in patent application CN103121296A includes an upper punch, a lower punch, a middle die, a feeder, and a triangular prism-shaped steel tube. The middle die has a die hole that penetrates its upper and lower end faces. The upper punch is located above the die hole of the middle die. The upper end of the lower punch is embedded in the die hole and seals the lower end opening of the die hole. The feeder is located above the middle die. The two ends of the triangular prism-shaped steel tube are connected to triangular cover plates that close the openings at both ends. A quadrilateral sidewall of the triangular prism-shaped steel tube is connected to the bottom of the feeder.

[0004] The aforementioned die structure has both the lower die and the middle die as a single piece. After the middle die is fixed in the worktable, it can only be used for stamping products of the same specifications. Furthermore, during long-term use, the bottom die will be damaged by the instantaneous impact force generated during the stamping process and needs to be disassembled and replaced. At this time, the one-piece connection method will hinder the operation. Therefore, we propose an adjustable pharmaceutical tableting die structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable pharmaceutical tableting die structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable pharmaceutical tableting die structure, comprising an upper punch and a lower punch, a middle die frame at the bottom of the upper punch, one end of a chuck being respectively engaged at both ends of the middle die frame, a sliding rod being slidably sleeved at the middle of the chuck, a support base being fixedly connected at both ends of the sliding rod, the support base being fixedly connected at both ends of a workbench frame, the workbench being mounted at the bottom of the middle die frame, hinge seats being hinged at the bottom ends of the chucks, the hinge seats being fixedly connected at both ends of a movable plate, the movable plate being movably mounted at the bottom of the workbench frame, an external threaded cylinder being sleeved at the middle of the movable plate via a threaded structure, one end of the external threaded cylinder being rotatably connected to the bottom end of the workbench frame, an adjusting cap being fixedly connected to the other end of the external threaded cylinder, and a lower punch being provided at the bottom of the adjusting cap.

[0007] Preferably, the vertical cross section of the intermediate mold frame is a cross-shaped structure.

[0008] Preferably, the center of the mold frame is provided with a mold cavity, the center of the workbench is provided with a through hole, the mold cavity, the through hole and the external threaded cylinder are coaxially arranged, the diameter of the mold cavity and the through hole are equal, and the inner diameter of the external threaded cylinder is larger than the diameter of the through hole.

[0009] Preferably, the top of the workbench is recessed with a positioning groove, which is fitted into the bottom of the middle mold frame.

[0010] Preferably, the claws are symmetrically arranged, and each claw has a guide groove extending through its middle portion. A sliding rod is slidably connected within each guide groove, and the guide groove has an arc-shaped structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The middle mold frame is clamped and limited by the chucks, which ensures the stability of the middle mold frame position;

[0013] 2. The movable plate pulls the hinged jaws, and the jaws cooperate with the fixed sliding rod to disengage the end of the jaws from the clamping engagement of the middle mold frame, making it convenient to disassemble and replace the middle mold frame. Attached Figure Description

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

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Upper punch rod, 2. Middle mold frame, 21. Mold cavity, 3. Workbench frame, 31. Positioning groove, 32. Through hole, 4. Lower punch rod, 5. Movable plate, 6. Hinge seat, 7. External threaded cylinder, 8. Adjusting cap, 9. Claw, 91. Guide groove, 10. Slide rod, 11. Support seat. Detailed Implementation

[0017] 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.

[0018] Example 1

[0019] Reference Figure 1 , 2This is the first embodiment of the present invention. This embodiment provides an adjustable pharmaceutical tableting die structure, including an upper punch 1 and a lower punch 4. The bottom of the upper punch 1 is provided with a middle die frame 2. The two ends of the middle die frame 2 are respectively engaged with one end of a claw 9. The middle part of the claw 9 is slidably sleeved with a slide rod 10. The two ends of the slide rod 10 are respectively fixedly connected to support seats 11. The support seats 11 are respectively fixedly connected to the two ends of a workbench frame 3. The workbench frame 3 is located at the bottom of the middle die frame 2. The bottom ends of the claws 9 are respectively hinged to hinge seats 6. The hinge seats 6 are respectively fixedly connected to the two ends of a movable plate 5. The movable plate 5 is movably located at the bottom of the workbench frame 3. The middle part of the movable plate 5 is sleeved with an external threaded cylinder 7 through a threaded structure. One end of the external threaded cylinder 7 is rotatably connected to the bottom end of the workbench frame 3. The other end of the external threaded cylinder 7 is fixedly connected to an adjusting cap 8. The bottom of the adjusting cap 8 is provided with a lower punch 4.

[0020] Example 2

[0021] Reference Figure 1-2 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Specifically, the vertical section of the middle mold frame 2 is a cross-shaped structure, and the bottom of the middle mold frame 2 facilitates the fitting and connection of the positioning groove 31.

[0022] Specifically, the center of the mold frame 2 is provided with a mold cavity 21, and the center of the workbench frame 3 is provided with a through hole 32. The mold cavity 21, the through hole 32 and the external threaded cylinder 7 are coaxially arranged. The diameters of the mold cavity 21 and the through hole 32 are equal, and the inner diameter of the external threaded cylinder 7 is larger than the diameter of the through hole 32.

[0023] Specifically, the top of the workbench 3 is recessed with a positioning groove 31, which fits into the bottom of the middle mold frame 2 to ensure the fixation of the middle mold frame 2 and prevent the middle mold frame 2 from shifting.

[0024] Specifically, the claws 9 are symmetrically arranged, and each claw 9 has a guide slot 91 extending through its middle section. A sliding rod 10 is slidably connected within each guide slot 91, which has an arc-shaped structure. When the movable plate 5 is raised, it causes the hinged claws 9 to rise. With the cooperation of the fixed sliding rods 10, the guide slots 91 on the claws 9 allow them to move away from the sides of the central mold frame 2 as they rise, thus disengaging them from the clamping and fixing of the central mold frame 2. This facilitates the disassembly and replacement of the central mold frame 2. After replacement, the adjusting cap 8 is manually rotated in the opposite direction, causing the fixed external threaded cylinder 7 to rotate in the opposite direction. The external threaded cylinder 7 causes the movable plate 5 to descend, which in turn pulls the claws 9 downwards. With the cooperation of the fixed sliding rods 10, the guide slots 91 on the claws 9 clamp and limit the top ends of the central mold frame 2.

[0025] The working principle and process are as follows: The workbench 3 is fixedly set on the workbench of the tablet press. The upper punch 1 and the lower punch 4 are fixedly connected to the end of the drive cylinder of the tablet press. The lower punch 4 is raised, passes through the external threaded cylinder 7 and enters the through hole 32 of the workbench 3. The medicine powder to be tableted is put into the mold cavity 21 of the middle mold frame 2. The lower punch 4 supports the medicine powder. The upper punch 1 is pressed down by the piston rod of the cylinder to realize the tableting operation. When the middle mold frame 2 needs to be disassembled and replaced, the adjusting cap 8 is manually rotated. The adjusting cap 8 drives the fixed external threaded cylinder 7 to rotate. The external threaded cylinder 7 drives the movable plate 5 to rise through the thread structure. The movable plate 5 drives the hinged claw 9 to rise. The guide slot 91 of the claw 9, with the cooperation of the fixed slide rod 10, makes the claw 9 move away from the middle mold frame 2 while it is raised. The claw 9 then disengages from the clamping and fixing of the middle mold frame 2, which facilitates the disassembly and replacement of the middle mold frame 2.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable pharmaceutical tabletting punch die structure comprising an upper punch (1), a lower punch (4), characterized in that: The bottom of the upper punch (1) is provided with a middle mold frame (2). The two ends of the middle mold frame (2) are respectively engaged with one end of the claw (9). The middle part of the claw (9) is slidably sleeved with the slide rod (10). The two ends of the slide rod (10) are respectively fixedly connected to the support seat (11). The support seat (11) is respectively fixedly connected to the two ends of the workbench frame (3). The workbench frame (3) is located at the bottom of the middle mold frame (2). The bottom end of the claw (9) is respectively hinged to the hinge seat (6). The hinge seat (6) is respectively fixedly connected to the two ends of the movable plate (5). The movable plate (5) is movably located at the bottom of the workbench frame (3). The middle part of the movable plate (5) is sleeved with the external threaded cylinder (7) through a threaded structure. One end of the external threaded cylinder (7) is rotatably connected to the bottom end of the workbench frame (3). The other end of the external threaded cylinder (7) is fixedly connected to the adjusting cap (8). The bottom of the adjusting cap (8) is provided with a lower punch (4).

2. The adjustable pharmaceutical tabletting die structure of claim 1, wherein: The vertical section of the intermediate mold frame (2) is a cross-shaped structure.

3. The adjustable pharmaceutical tableting die structure according to claim 1, characterized in that: The center of the mold frame (2) is provided with a mold cavity (21), and the center of the workbench frame (3) is provided with a through hole (32). The mold cavity (21), the through hole (32) and the external threaded cylinder (7) are coaxially arranged. The diameters of the mold cavity (21) and the through hole (32) are equal, and the inner diameter of the external threaded cylinder (7) is larger than the diameter of the through hole (32).

4. The adjustable pharmaceutical tabletting die structure of claim 1, wherein: The top of the workbench (3) is recessed with a positioning groove (31), which is fitted into the bottom of the middle mold frame (2).

5. The adjustable pharmaceutical tabletting die structure of claim 1, wherein: The claws (9) are arranged symmetrically to each other, and each claw (9) has a guide slot (91) through its middle part. The guide slot (91) is slidably connected to the slide rod (10). The guide slot (91) is an arc-shaped structure.

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