Device for measuring depth of upper punch-in die and tabletting equipment

Abstract

The utility model discloses an upper punch-in die depth measuring device, which comprises an upper punch-in rod, a locking sleeve, a measuring column, a spring and a solid middle die, the upper end of the measuring column extends into the lower end of the upper punch-in rod, the locking sleeve is arranged at the lower end of the upper punch-in rod, a through hole for the lower end of the measuring column to penetrate out is arranged on the locking sleeve, and the spring is arranged between the measuring column and the upper punch-in rod. The measuring column is provided with a scale line, when the substituted upper punching rod is not pressed, the lower surface of the locking sleeve is aligned with the 0 scale of the scale line, the substituted upper punching rod is in clearance fit with the die hole of the upper punching disc, the solid middle die is arranged in the mounting hole of the middle punching disc, and the lower end of the measuring column abuts against the upper surface of the solid middle die. The device is simple in structure, is convenient to operate, facilitates the dismounting of the device from a tabletting device, and is precise in measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of tablet presses, and particularly relates to a device for measuring the depth of an upper punch entering a die and a tablet pressing device. Background Art

[0002] The existing upper punch entering die adjusting device of a tablet press can adjust the depth of the upper punch entering the die. For example, in the utility model patent with the patent application number 201820099417.1 and the patent name of a device for adjusting the depth of an upper punch entering a die, a pressure wheel is installed on the eccentric section of an eccentric shaft. The eccentric shaft is locked on a support by bolts. The cylindrical surface of the pressure wheel contacts the top plane of the punch cap of the upper punch. There is a clearance fit between the outer cylindrical surface of the punch rod of the upper punch and the round hole of the punch plate. The distance between the tip end face of the upper punch rod and the upper surface of the middle die is H, and the value of H is 2 - 6 mm. When the bolts are loosened and the eccentric shaft is rotated, the rotation center of the pressure wheel will move downward or upward, so that the value of H decreases or increases. However, the specific value of the depth H of the upper punch rod entering the die cannot be accurately measured and displayed by this device. Content of the Utility Model

[0003] The purpose of this application is to provide a device for measuring the depth of an upper punch entering a die to solve the problems raised in the above background art.

[0004] To achieve the above purpose, this application provides the following technical solutions:

[0005] A device for measuring the depth of an upper punch entering a die includes a substitute upper punch rod, a locking sleeve, a measuring column, a spring and a solid middle die. The upper end of the measuring column extends into the lower end of the substitute upper punch rod. The locking sleeve is arranged at the lower end of the substitute upper punch rod. The locking sleeve is provided with a through hole for the lower end of the measuring column to pass through. A spring is arranged between the measuring column and the substitute upper punch rod. The measuring column is provided with scale lines. When the substitute upper punch rod is in an uncompressed state, the lower surface of the locking sleeve is aligned with the 0 scale of the scale line. The substitute upper punch rod has a clearance fit with the die hole of the upper punch plate. The solid middle die is arranged in the mounting hole of the middle punch plate. The lower end of the measuring column abuts against the upper surface of the solid middle die.

[0006] Further, the upper surface of the solid middle die is flush with the upper surface of the middle punch plate, and the upper surface of the solid middle die is closed.

[0007] Further, the lower end of the substitute upper punch rod is provided with an axial blind hole corresponding to the measuring column. The spring is arranged in the blind hole. The upper and lower ends of the spring respectively abut against the bottom of the blind hole and the upper surface of the measuring column.

[0008] Further, the locking sleeve and the lower end of the substitute upper punch rod are threadedly connected.

[0009] Further, an adjusting pad is sleeved on the measuring post. The upper and lower surfaces of the adjusting pad are respectively in contact with the measuring post and the locking sleeve. The adjusting pad is used to adjust the relative positions of the measuring post and the locking sleeve.

[0010] Further, the scale lines are sequentially indicated as 0, 1, 2, 3, 4, 5, 6 from top to bottom.

[0011] A tablet pressing device includes a pressing wheel, an eccentric shaft, an upper punch plate, a middle punch plate, and the upper punch entering die depth measuring device as described above. The substitute upper punch rod is in clearance fit with the die hole of the upper punch plate. The pressing wheel is installed on the eccentric shaft, and the solid middle die is arranged in the installation hole of the middle punch plate.

[0012] In summary, the technical effects and advantages of the present utility model are as follows: The structure of the present utility model is simple, the operation is convenient, it is convenient to disassemble the upper punch entering die depth measuring device from the tablet pressing device, and the measurement is accurate. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the upper punch entering die depth measuring device in an embodiment of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the locking sleeve and the measuring post of the present utility model with the 0 scale line aligned;

[0016] Figure 3 It is a schematic structural diagram of the tablet pressing device in an embodiment of the present utility model.

[0017] In the figure: 1, pressing wheel; 2, eccentric shaft; 3, upper punch entering die depth measuring device; 31, substitute upper punch rod; 32, measuring post; 33, locking sleeve; 34, spring; 35, adjusting pad; 4, solid middle die; 5, upper guide rail plate; 6, upper punch plate; 7, middle punch plate. Detailed Embodiments

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] This embodiment provides an upper punch into die depth measuring device, as Figures 1 - 3 shown, including a substitute upper punch rod 31, a locking sleeve 33, a measuring column 32, a spring 34 and a solid center die 4. The upper end of the measuring column 32 extends into the lower end of the substitute upper punch rod 31. The locking sleeve 33 is arranged at the lower end of the substitute upper punch rod 31. The locking sleeve 33 is provided with a through hole for the lower end of the measuring column 32 to pass through. A spring 34 is arranged between the measuring column 32 and the substitute upper punch rod 31. The measuring column 32 is provided with scale lines. When the substitute upper punch rod 31 is in an uncompressed state, the lower surface of the locking sleeve 33 is aligned with the 0 scale of the scale line. The substitute upper punch rod 31 is in clearance fit with the die hole of the upper punch plate 6. The solid center die 4 is arranged in the mounting hole of the middle punch plate 7. The lower end of the measuring column 32 abuts against the upper surface of the solid center die 4.

[0023] During the measurement in this embodiment, the pressing wheel 1 moves eccentrically and presses downward on the substitute upper punch rod 31. Since the pressing wheel 1 moves eccentrically, the displacements of the substitute upper punch rod 31 moving downward are different. When the substitute upper punch rod 31 is in an uncompressed state, the lower surface of the locking sleeve 33 aligns with the 0 scale of the scale line. When the substitute upper punch rod 31 is pressed, the substitute upper punch rod 31 drives the locking sleeve 33 to move downward. Since the lower end of the measuring column 32 abuts against the solid middle die 4 and its position is fixed, the scale indicated by the locking sleeve 33 is the die insertion depth. As the pressing wheel 1 rotates, it presses down the locking sleeve 33 to indicate different scales, ensuring accurate measurement. During disassembly, the substitute upper punch rod 31 and the solid middle die 4 can be taken out from the die hole of the upper punch plate and the middle punch plate, which is convenient for disassembly and assembly.

[0024] In this embodiment, the upper surface of the solid middle die 4 is flush with the upper surface of the middle punch plate 7, and the upper surface of the solid middle die 4 is closed to limit the downward movement of the measuring column 32, which can accurately reflect the die insertion depth.

[0025] Further, a blind hole in the axial direction is provided at the lower end of the substitute upper punch rod 31 corresponding to the measuring column 32, and the spring 34 is arranged in the blind hole. The upper and lower ends of the spring 34 respectively abut against the bottom of the blind hole and the upper surface of the measuring column 32.

[0026] Further, the lower end of the locking sleeve 33 is threadedly connected to the substitute upper punch rod 31. The lower surface of the locking sleeve 33 is used to indicate the die insertion depth.

[0027] Further, an adjusting pad 35 is sleeved on the measuring column 32. The upper and lower surfaces of the adjusting pad 35 respectively fit with the measuring column 32 and the locking sleeve 33. The adjusting pad 35 is used to adjust the relative positions of the measuring column 32 and the locking sleeve 33, facilitating the alignment of the lower surface of the locking sleeve 33 with the 0 scale line of the measuring column 32 at the initial stage of measurement.

[0028] Further, the scale line is sequentially indicated as 0, 1, 2, 3, 4, 5, 6 from top to bottom. The specific setting range of the scale line can be adaptively changed according to actual use.

[0029] This embodiment also provides a tablet pressing device, as Figure 3 shown, including a pressing wheel 1, an eccentric shaft 2, an upper guide rail plate 5, an upper punch plate 6, a middle punch plate 7, and the upper punch die insertion depth measuring device 3 as described above. The substitute upper punch rod 31 is in clearance fit with the die hole of the upper punch plate 6. The pressing wheel 1 is installed on the eccentric shaft 2, and the solid middle die 4 is arranged in the installation hole of the middle punch plate 7.

[0030] Working process of this embodiment: The pressing wheel 1 is installed on the eccentric section of the eccentric shaft 2. The eccentric shaft 2 is fixed within the support block. The upper punch die depth measuring device 3 is installed within the die hole of the upper punch plate 6. The middle punch plate 7 is installed with the solid middle die 4. Rotate the upper punch plate 6, and the upper punch plate 6 rotates in a circular motion along the upper guide rail plate 5, causing the substitute upper punch rod 31 on the upper punch plate 6 to be positioned directly below the pressing wheel 1. At this time, the lower end of the measuring column 32 contacts the upper surface of the solid middle die 4. Rotate the eccentric shaft 2, and the rotation center of the pressing wheel 1 will move downward or upward, thereby reducing or increasing the die depth, i.e., the downward displacement of the substitute upper punch rod 31. When the substitute upper punch rod 31 is not under pressure, the lower surface of the locking sleeve 33 aligns with the 0 scale line of the measuring column 32. When the substitute upper punch rod 31 is subjected to a downward force, the substitute upper punch rod 31 and the locking sleeve 33 move downward, the spring 34 is compressed, and the scale line on the measuring column 32 moves upward relative to the locking sleeve 33. The scale line can reversely display the value of the die depth. When the spring 34 is compressed greatly, the upper punch die depth value is large; when the spring 34 is compressed slightly, the upper punch die depth value is small.

[0031] In summary, the structure of this embodiment is simple, the operation is convenient, it is easy to disassemble the upper punch die depth measuring device from the tablet pressing equipment, and the measurement is accurate.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for measuring the depth of a punch, characterized in that: It includes a substitute upper punch rod, a locking sleeve, a measuring column, a spring and a solid core die, the upper end of the measuring column extends into the lower end of the substitute upper punch rod, the locking sleeve is arranged at the lower end of the substitute upper punch rod, the locking sleeve is provided with a through hole for the lower end of the measuring column to pass through, a spring is arranged between the measuring column and the substitute upper punch rod, and a scale line is arranged on the measuring column. When the substitute upper punch rod is not under pressure, the lower surface of the locking sleeve is aligned with the 0 scale line, the substitute upper punch rod is matched with the mold hole gap of the upper punch plate, the solid core die is arranged in the mounting hole of the middle punch plate, and the lower end of the measuring column is against the upper surface of the solid core die.

2. The upper punching die depth measuring device according to claim 1 is characterized in that: The upper surface of the solid center die is flush with the upper surface of the middle punch plate, and the upper surface of the solid center die is closed.

3. The upper punching die depth measuring device according to claim 1, characterized in that: The lower end of the substitute upper punch rod is provided with an axial blind hole corresponding to the measuring column, the spring is arranged in the blind hole, and the upper and lower ends of the spring are respectively against the bottom of the blind hole and the upper surface of the measuring column.

4. The upper punching die depth measuring device according to claim 1, characterized in that: The locking sleeve is threadedly connected to the lower end of the upper punch rod.

5. The upper punching die depth measuring device according to claim 1, characterized in that: An adjustment pad is sleeved on the measuring column, and the upper and lower surfaces of the adjustment pad are respectively fitted with the measuring column and the locking sleeve, and the adjustment pad is used to adjust the relative position of the measuring column and the locking sleeve.

6. The upper punching die depth measuring device according to claim 1, characterized in that: The scale lines indicate 0, 1, 2, 3, 4, 5, and 6 from top to bottom.

7. A tableting device, characterized in that: It includes a pressure wheel, an eccentric shaft, an upper punch plate, a middle punch plate and an upper punch depth measuring device as described in any one of claims 1 to 6, wherein the upper punch rod is matched with the mold hole clearance of the upper punch plate, the pressure wheel is installed on the eccentric shaft, and the solid middle die is arranged in the installation hole of the middle punch plate.

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