Tablet pollution prevention stamping die cover of tablet press

Abstract

The utility model discloses a tablet pollution prevention stamping die cover of a tablet press, belongs to the technical field of tablet press upper punch protection, and is used for solving the technical problems that in the prior art, an oil receiving ring is small in oil receiving capacity, and a plurality of upper punch exposed punch body parts cause lubricating oil to pollute tablets. The upper punch can stretch out and draw back relative to a rotary table, the cover body is connected between the rotary table and the upper punch, the cover body can stretch out or draw back in a wave shape in the axis direction of the upper punch, and a positioning ring used for being clamped with the rotary table is arranged on a turned-over edge formed at one end of the cover body. One end of the cover body is provided with a connecting section, the other end of the cover body is provided with a connecting section, the connecting section is used for being connected with the tail end of an upper punch in a sealed mode, in the working state, the cover body moves downwards along with the upper punch, and the cover body elastically stretches and can cover the outer portion of a punch body of the upper punch. The cover body elastically extends and can cover the upper punch body, and lubricating oil of the upper punch body can be effectively prevented from adsorbing dust.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for the upper punch of a tablet press, and in particular to a die cover for preventing tablet contamination in a tablet press. Background Technology

[0002] Tablet presses are used in the pharmaceutical industry to manufacture tablets. They are automated, continuous production equipment that compresses granular materials into round, irregularly shaped tablets with text, symbols, or other graphic designs. Among existing technologies, rotary tablet presses are the most widely used. When using a rotary tablet press, the upper punch needs to be frequently lubricated to ensure the machine operates normally. During operation, the lubricating oil gets heated and drips down the punch, posing a risk of contaminating the tablets.

[0003] Traditional tablet presses use an oil receiving ring added to the upper punch. The bottom of the oil receiving ring is connected to the upper punch, and the top is open to block the lubricating oil that slides down the punch. Although this can effectively prevent contamination of the tablets, the oil receiving ring has a small capacity, which often causes lubricating oil to overflow and contaminate the tablets. In addition, the upper punch has a large exposed part, and over time, the lubricating oil can easily absorb drug powder and fall onto the tablet surface, contaminating the tablets. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a tablet press die cover to prevent tablets from contaminating the die. This invention addresses the problem of small oil receiving capacity of the oil receiving ring and a large amount of exposed upper punch body, which leads to lubricating oil contaminating the tablets.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The tablet press die cover disclosed in this utility model for preventing tablet contamination includes:

[0007] An upward thrust capable of extending and retracting relative to the turntable;

[0008] A cover connecting the turntable and the upper punch;

[0009] The cover is designed to extend or retract in a wave-like shape along the axis of the upper punch. A positioning ring for engaging with the turntable is provided on the flange formed at one end of the cover. A connecting section is formed at the other end of the cover for sealing connection with the end of the upper punch. In the working state, the cover moves down with the upper punch and the cover can elastically extend to cover the outside of the upper punch body.

[0010] Furthermore, the middle part of the cover has a deformable section that can elastically expand or contract in a wave shape, and the inner wall of the deformable section does not contact the upper punch body.

[0011] Furthermore, the deformed segment is a cylinder or a cone.

[0012] Furthermore, the top of the cover has an inclined upward-extending variable diameter section, the top of the variable diameter section has a flange, and the flange has a positioning ring protruding from its upper surface.

[0013] Furthermore, the bottom end of the cover has a connecting section extending along the upward thrust axis, and the inner wall of the connecting section is provided with at least one limiting protrusion.

[0014] Furthermore, a limiting groove is provided at the end of the upper punch, which cooperates with the connecting section. The groove is provided on the side wall of the limiting groove for engaging with the limiting protrusion ring.

[0015] Furthermore, a positioning groove is provided on the lower surface of the turntable for connecting with the positioning ring.

[0016] Furthermore, the cover is made of elastic transparent rubber material.

[0017] In the above technical solution, the tablet press provided by this utility model prevents tablets from contaminating the die cover, which has the following advantages:

[0018] The cover designed in this utility model can extend or retract in a wave-like shape along the axis of the upper punch. One end of the cover is engaged with the turntable through a positioning ring, and the other end is sealed to the end of the upper punch through a connecting section, preventing lubricating oil from flowing along the upper punch and contaminating the tablets. At the same time, the cover moves down with the upper punch, and the elastic extension of the cover can cover the outside of the upper punch body, effectively preventing the lubricating oil of the punch body from adsorbing dust. The cover not only expands the protective volume, but also prevents the upper punch body from being exposed. The cover has a high coaxiality with the upper punch, and the protective effect is good, further reducing the risk of tablet contamination. In addition, compared with the existing oil receiving ring, the cover not only has a longer service life, but also helps to extend the life of the tablet press punch rod. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a cross-sectional view of the assembly state of the die cover for preventing tablet contamination in a tablet press disclosed in this utility model.

[0021] Figure 2 This is a front view of the upper punch of the die cover for preventing tablet contamination in a tablet press disclosed in this utility model.

[0022] Figure 3 This is a full sectional front view of the die cover of the tablet press disclosed in this utility model, which prevents tablet contamination.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Top punch; 101. Limiting groove; 2. Cover; 201. Variable diameter section; 202. Flanged edge; 203. Positioning ring; 204. Connecting section; 205. Limiting protrusion ring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] See Figure 1 As shown;

[0027] The utility model tablet press prevents tablet contamination of the punch die cover. The tablet press is a high-speed tablet press in the prior art where the upper punch 1 can extend and retract relative to the turntable. The cover 2 is connected between the turntable and the upper punch 1.

[0028] The structure of the cover 2 is such that it can extend or contract in a wave-like shape along the axis of the upward thrust 1;

[0029] The cover 2 has a flange 202 at one end with a positioning ring 203. The positioning ring 203 engages with the positioning groove on the lower surface of the turntable to keep the cover 2 coaxial with the upper punch 1. The other end of the cover 2 has a connecting section 204 for sealing connection with the end of the upper punch 1 to prevent lubricating oil from flowing along the upper punch 1 and contaminating the tablet. The cover 2 not only expands the protective volume, but also moves down with the upper punch 1. The elastic extension of the cover 2 can cover the outside of the upper punch 1, effectively preventing the lubricating oil of the punch body from adsorbing dust.

[0030] The cover 2 is made of elastic rubber. During assembly, the cover 2 is fitted over the upper punch 1. The lower end connecting section 204 of the cover 2 is locked and sealed with the upper punch 1 limiting groove 101. The upper end of the cover 2 is locked with the positioning groove on the lower surface of the turntable through the positioning ring 203.

[0031] In the working state, the upper punch 1 moves downward relative to the turntable, and the cover 2 extends on the punch body of the upper punch 1 to protect the outside of the punch body. The upper punch 1 moves upward relative to the turntable, and the cover 2 contracts under the compression of the upper punch 1 and the turntable.

[0032] Preferably, a deformable section is formed in the middle of the cover 2. The deformable section forms wavy folds to achieve elastic expansion or contraction, thereby reducing or increasing the effective length of the cover. The inner wall of the deformable section does not contact the upper punch 1 to avoid friction. The deformable section can be a cylinder or a cone. When it is a cone, the end with the larger diameter faces upward and is connected to the diameter-changing section 201 of the cover 2. The end with the smaller diameter of the cone is connected to the connecting section 204. That is to say, the cone is placed upside down, and the deformation is more stable.

[0033] See Figure 3 As shown:

[0034] Preferably, the top of the cover 2 has an inclined upward extending variable diameter section 201, the top of the variable diameter section 201 has a flange 202, and a positioning ring 203 protruding from its upper surface is formed on the flange 202. In this structure, the diameter of the cover 2 is expanded by the variable diameter section 201, and the positioning ring 203 protruding from the upper surface of the flange 202 makes it easy for the top of the cover 2 to accurately locate the position of the turntable positioning groove.

[0035] The bottom end of the cover 2 has a connecting section 204 extending along the axis of the upper punch 1, and the inner wall of the connecting section 204 is provided with at least one limiting protrusion 205.

[0036] See Figure 2 As shown, a limiting groove 101 is provided at the end of the upper punch 1. The limiting groove 101 cooperates with the connecting section 204. The side wall of the limiting groove 101 is provided with grooves at intervals. The grooves engage with the limiting protrusion 205 of the connecting section 204.

[0037] Preferably, a positioning groove is provided on the lower surface of the turntable for connection with the positioning ring 203. The positioning ring 203 and the positioning groove can be connected by a tight fit.

[0038] Preferably, the cover 2 is made of elastic transparent rubber material, which makes it easy to observe the internal condition of the cover 2.

[0039] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tablet press anti-pollution die cover characterized in that, include: An upper punch (1) that can extend and retract relative to the turntable, and a cover (2) connecting the turntable and the upper punch (1); The cover (2) is constructed to be able to extend or contract in a wave shape along the axis of the upper punch (1). A positioning ring (203) for engaging with the turntable is provided on the flange (202) formed at one end of the cover (2). A connecting section (204) is formed at the other end of the cover (2) for sealing connection with the end of the upper punch (1). In the working state, the cover (2) moves down with the upper punch (1). The elastic extension of the cover (2) can cover the outside of the upper punch (1).

2. The tablet press anti-pollution die cover according to claim 1, Its characteristics are: The cover (2) has a deformable section in the middle that is elastically extended or contracted in a wave shape, and the inner wall of the deformable section does not contact the upper punch (1).

3. The tablet press anti-pollution die cover of claim 2 wherein ； The deformed segment is a cylinder or a cone.

4. The tablet press anti-pollution die cover of claim 1, Its characteristics are: The top of the cover (2) has an inclined upward-extending variable diameter section (201), the top of the variable diameter section (201) has a flange (202), and the flange (202) has a positioning ring (203) protruding from its upper surface.

5. The tablet press anti-pollution die cover of claim 1, Its characteristics are: The bottom end of the cover (2) is formed with a connecting section (204) extending along the axis of the upper punch (1), and the inner wall of the connecting section (204) is provided with at least one limiting protrusion (205).

6. The tablet press anti-pollution die cover of claim 5, Its characteristics are: The upper punch (1) has a limiting groove (101) at its end, which cooperates with the connecting section (204). The limiting groove (101) has a groove on its side wall for engaging with the limiting protrusion (205).

7. The tablet press anti-pollution die cover of claim 1 wherein ； The lower surface of the turntable is provided with a positioning groove for connecting with the positioning ring (203).

8. A tablet press anti-pollution die cover according to any one of claims 1-7, characterized in that ； The cover (2) is made of elastic transparent rubber.

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