Cleaning device for punch of tablet press

Abstract

The utility model provides a cleaning device for a punch of a tablet press, which relates to the technical field of tablet presses and comprises the tablet press, a cleaning device and a control device. The die is provided with a cavity which is in sliding fit with the punch and is used for filling powder; the first through hole is formed in the side wall of the mold and communicates with the cavity, a shell in sliding connection with the mold is arranged in the first through hole, and a cleaning part is rotationally connected to the end, close to the cavity, of the shell and used for cleaning powder on the punch; the transmission mechanism is located at the free end of the shell, is in transmission connection with the cleaning piece through the interior and is used for driving the cleaning piece to rotate. The cleaning piece located in the die cavity is driven by the transmission mechanism to rotate and clean the punch, the sticking situation of the punch is avoided, and the problem that components of a tableting formed product are mixed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tablet presses, in particular to a cleaning device for a punch of a tablet press. Background Art

[0002] Tablet press is mainly used in the research of tablet process in pharmaceutical industry. It is an automatic continuous production equipment that presses granular materials into round, special-shaped tablets with text, symbols and graphics with a diameter not exceeding 13mm.

[0003] When compressing cetirizine hydrochloride tablets, first assemble the mold sleeve and mold bottom to be used, and place the mold sheet, then pour the sample powder into the mold cavity, shake the mold to evenly distribute the sample powder in the mold cavity, and after shaking, fix the mold in the center of the tablet press by turning the screw on the tablet press, tighten the drain valve stem, press the start button, and the tablet press starts to pressurize, and the sample powder is pressed and formed by the punch on the tablet press, and it will automatically stop after the set pressure is added. After reaching the required pressure, the tablet press has completed the compression and molding of the sample powder, and then releases the drain valve stem, and turns the screw on the tablet press to push the sample out of the mold sleeve, and then removes the mold and gently removes the sample, and finally cleans and maintains the tablet press and the mold.

[0004] The tablet pressing process of the tablet press is usually carried out by a low-speed tablet press, which is not suitable for large-scale production. When a high-speed tablet press is used, continuous tablet pressing will cause product powder to stick to the punch of the tablet press, resulting in mixed components in the pressed tablets, which reduces the product quality. In addition, when cleaning the punch, the mold needs to be removed, which is a cumbersome process that wastes time and is not conducive to large-scale production of high-speed tablet presses. Utility Model Content

[0005] The utility model solves the problem of sticking of the punch on a high-speed tablet press after tablet pressing and provides a cleaning device for the punch of the tablet press. The device can clean the punch of the tablet press without removing the mold after the punch has pressed the tablet, thereby avoiding the problem of product powder sticking to the punch of the tablet press and improving production efficiency.

[0006] The technical solution adopted by the utility model is:

[0007] A cleaning device for a tablet press punch is provided, comprising:

[0008] A tablet press is used to drive a punch to press and shape the powder;

[0009] The mold has a cavity that slides with the punch and is used to fill powder; a first through hole is opened on the side wall of the mold and is connected to the cavity, a shell that is slidably connected to the mold is provided inside the first through hole, and a cleaning part is rotatably connected to one end of the shell close to the cavity for cleaning powder on the punch; a transmission mechanism is located at the free end of the shell and is transmission-connected to the cleaning part through its interior for driving the cleaning part to rotate.

[0010] In some embodiments of the utility model, a second through hole connected to the cavity is further provided on the side wall of the mold, and a collecting box slidably connected to the mold is provided inside the second through hole for collecting powder cleaned off the punch by the cleaning member.

[0011] In some embodiments of the present invention, the housing includes a first housing and a second housing, and the first housing and the second housing are connected at 90°-180°.

[0012] In some embodiments of the present invention, the transmission mechanism includes a rotating wheel and a transmission assembly, and the transmission assembly is used to transmit and connect the rotating wheel and the cleaning member, so that the rotating wheel can drive the cleaning member to rotate through the transmission assembly.

[0013] In some embodiments of the present invention, an extension portion communicating with the interior of the shell is provided on the shell, and the extension portion is arranged along a sliding direction of the shell toward the cavity.

[0014] In some embodiments of the utility model, a groove is provided on the outer wall of the shell, a fixing ring is provided on the outer wall of the mold, and an insertion rod is slidably connected to the fixing ring and engaged with the groove.

[0015] In some embodiments of the present invention, a protective pad is provided at one end of the extension portion facing the center of the cavity.

[0016] In some embodiments of the present invention, the housing is a closed cylinder.

[0017] The beneficial effects of the utility model are:

[0018] 1. After the punch completes tableting, powder will remain on the punch. To avoid mixing of the components of the subsequent punched products, the shell can be slid to slide in the first through hole. When the shell slides to a suitable position, the staff adjusts the rotation of the transmission mechanism on the shell on the outer side of the first through hole to drive the cleaning part on the other side of the shell to rotate. When the cleaning part rotates, the punch in the mold cavity can be cleaned to improve the quality of the product.

[0019] 2. By opening the first through hole connected to the mold cavity, it is unnecessary to disassemble the mold again when cleaning the punch, thereby reducing labor hours and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a cleaning device for a tablet press punch;

[0022] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 4 A top view of the collection box.

[0025] Reference numerals:

[0026] 1- Tablet press;

[0027] 2-mold, 20-cavity, 21-first through hole, 22-second through hole, 23-collection box;

[0028] 3- Punch;

[0029] 4-rotating wheel, 40-transmission assembly, 41-first shell, 42-second shell, 43-extension part, 44-cleaning part, 45-groove, 46-fixing ring, 47-insertion rod, 48-protection pad. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0032] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0033] Example

[0034] The utility model provides a cleaning device for a punch 3 of a tablet press 1, comprising:

[0035] A tablet press 1 is used to drive a punch 3 to press and shape the powder;

[0036] A die 2, the die 2 having a cavity 20 that is slidably matched with the punch 3 and is used for filling powder;

[0037] A first through hole 21 is formed on the side wall of the mold 2 and communicates with the cavity 20. A housing slidably connected to the mold 2 is disposed inside the first through hole 21. A cleaning member 44 is rotatably connected to one end of the housing close to the cavity 20 for cleaning powder on the punch 3.

[0038] The transmission mechanism is located at the free end of the shell and is transmission-connected with the cleaning member 44 through its interior to drive the cleaning member 44 to rotate.

[0039] The cleaning member 44 is a disc and a cleaning brush. The disc is rotatably connected to the housing and driven to rotate by a transmission mechanism. The cleaning brush is circumferentially arranged on the outer side wall of the disc to achieve rotational cleaning of the punch head 3.

[0040] When in use, after the tablet press 1 presses the powder in the cavity 20 on the mold 2 into tablets, the position of the punch 3 is adjusted to rise so that the position of the punch 3 in the cavity 20 is higher than the position of the first through hole 21. At this time, the position of the housing is pushed so that the housing slides inside the first through hole 21. After the housing slides to a suitable position, the cleaning member 44 is located inside the cavity 20. The transmission mechanism is adjusted to drive the cleaning member 44 at the other end of the housing to rotate, and the cleaning of the punch 3 is completed. It is worth noting that in order to adapt to the cleaning of the punch 3 by the cleaning member 44, the die curvature of the punch 3 can also be adjusted accordingly.

[0041] Furthermore, a second through hole 22 communicating with the cavity 20 is provided on the side wall of the mold 2 , and a collecting box 23 slidably connected to the mold 2 is provided inside the second through hole 22 for collecting powder cleaned off the punch 3 by the cleaning member 44 .

[0042] The second through hole 22 is located below the first through hole 21 in the vertical direction of the mold 2, so that when the punch 3 is cleaned by adjusting the shell in the first through hole 21, the collecting box 23 slidably connected in the second through hole 22 can collect the cleaned powder.

[0043] During use, the staff manually adjusts the position of the collecting box 23 in the second through hole 22. It is worth noting that when the collecting box 23 moves into the cavity 20, the contact surface between the collecting box 23 and the inner wall of the mold 2 located in the cavity 20 is tightly fitted, that is, the shapes are the same. When the collecting box 23 moves out of the cavity 20 after collecting the powder, the end of the collecting box 23 facing the center of the cavity 20 should not be located in the cavity 20 to avoid affecting the tableting of the punch 3.

[0044] Furthermore, the housing includes a first housing 41 and a second housing 42 , and the first housing 41 and the second housing 42 are connected to each other at 90°-180°.

[0045] The first shell 41 and the second shell 42 are connected end to end and are an integrally formed structure. The first shell 41 and the second shell 42 are arranged at a certain angle, and the angle is toward the top direction of the mold 2.

[0046] When in use, the first shell 41 and the second shell 42 are set at an angle, so that different cleaning positions of the punch 3 can be achieved in the vertical direction of the mold 2, and the cleaning effects brought about are also different. The larger the angle, the closer the shell is to the punch 3 in the vertical direction of the mold 2, and the cleaning is not comprehensive, but the cleaning effect of the four corners of the punch 3 is good; the smaller the angle, the farther the shell is from the punch 3 in the vertical direction of the mold 2, and the cleaning is comprehensive, but the cleaning effect of the four corners is not good.

[0047] Furthermore, the transmission mechanism includes a rotating wheel 4 and a transmission assembly 40 , and the transmission assembly 40 is used to transmit and connect the rotating wheel 4 and the cleaning member 44 , so that the rotating wheel 4 can drive the cleaning member 44 to rotate through the transmission assembly 40 .

[0048] The rotating wheel 4 is used for the staff to manually adjust the operation of the transmission assembly 40. The transmission assembly 40 is one of a belt drive, a chain drive or a gear meshing drive, and the purpose is to achieve the forward and reverse rotation of the cleaning member 44 at the other end of the shell through the forward and reverse rotation of the rotating wheel 4, so as to achieve a better cleaning effect of the punch 3.

[0049] When in use, the staff adjusts the forward and reverse rotation of the rotating wheel 4 to drive the cleaning member 44 at the other end of the shell to rotate through the transmission assembly 40 connected by transmission, so as to clean the punch head 3.

[0050] Furthermore, the shell is provided with an extension portion 43 communicating with the interior thereof, and the extension portion 43 is arranged along the sliding direction of the shell toward the cavity 20 .

[0051] The extension part 43 and the housing are integrally formed. The extension part 43 is disposed on one end of the housing facing the center of the cavity 20 and can slide unhindered with the housing in the first through hole 21. The housing and the extension part 43 form a T-shaped structure.

[0052] When in use, the extension portion 43 slides together with the shell in the first through hole 21 until the extension portion 43 and the inner wall of the mold 2 in the cavity 20 touch each other. At this time, the extension portion 43 is used to limit the position, so that the cleaning part 44 on the shell can clean the punch 3. This method is used in special cases, such as the tableting of cetirizine hydrochloride tablets. The punch 3 used is relatively small and is located in the middle of the entire cavity 20. It is necessary to use the extension portion 43 to position and clean it to avoid the punch 3 from not being cleaned properly.

[0053] Furthermore, a groove 45 is provided on the outer wall of the shell, and a fixing ring 46 is provided on the outer wall of the mold 2 . An insert rod 47 slidably connected to the fixing ring 46 and engaged with the groove 45 .

[0054] The groove 45 is formed on the outer wall of the shell facing the top of the mold 2, and when the shell slides in the first through hole 21 until the shell is no longer in the cavity 20, the groove 45 is no longer in the first through hole 21, and can be matched with the insertion rod 47 slidably connected to the fixing ring 46 provided on the outer wall of the mold 2 to fix and limit the shell.

[0055] During use, after the cleaning piece 44 has cleaned the punch 3, the shell slides in the first through hole 21 toward the outside of the mold 2 until the groove 45 is no longer located in the first through hole 21, and then the rod 47 slidably connected to the fixing ring 46 is adjusted to make the rod 47 and the groove 45 fit together to achieve a fixed limiting effect on the shell.

[0056] Furthermore, a protection pad 48 is provided at one end of the extension portion 43 facing the center of the cavity 20 .

[0057] The protective pad 48 is made of a silicone structure to prevent the extension portion 43 from causing collision damage to the inner wall of the upper cavity 20 of the mold 2 and affecting the service life of the mold 2.

[0058] When in use, the extension portion 43 slides along the first through hole 21 along with the shell. After the shell slides toward the center of the cavity 20 until the extension portion 43 touches the inner wall of the cavity 20 on the mold 2, the protection pad 48 is located between the extension portion 43 and the mold 2 to protect the inner wall of the mold 2 in the cavity 20 to prevent damage after frequent and multiple collisions.

[0059] Furthermore, the shell is a closed cylinder.

[0060] During use, the residual powder cleaned from the punch 3 by the cleaning piece will fall into the first groove 45, and the closed cylinder can prevent the powder from entering, thereby preventing the powder from being accumulated in the cylinder for a long time and affecting the operation of the internal transmission mechanism.

[0061] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. In the absence of conflicts, the embodiments of the present application and the features in the embodiments may be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cleaning device for a tablet press punch, It is characterized in that include: A tablet press, used to drive a punch to press and form powder; a mold, the mold having a cavity that slides with the punch and is used to fill the powder; a first through hole, opened on the side wall of the mold and connected to the cavity, the interior of the first through hole is provided with a shell that is slidably connected to the mold, and one end of the shell close to the cavity is rotatably connected to a cleaning piece for cleaning the powder on the punch; a transmission mechanism, located at the free end of the shell, is transmission-connected to the cleaning piece through its interior, and is used to drive the cleaning piece to rotate.

2. The cleaning device for tablet press punch according to claim 1, It is characterized in that The side wall of the mold is also provided with a second through hole connected to the cavity, and the interior of the second through hole is provided with a collecting box slidably connected to the mold for collecting powder on the punch cleaned by the cleaning member.

3. The cleaning device for tablet press punch according to claim 1 or 2, It is characterized in that The shell includes a first shell and a second shell, and the first shell and the second shell are connected to each other at an angle of 90°-180°.

4. The tablet press punch cleaning device according to claim 3, It is characterized in that The transmission mechanism comprises a rotating wheel and a transmission assembly, wherein the transmission assembly is used for transmission connection between the rotating wheel and the cleaning member, so that the rotating wheel can drive the cleaning member to rotate through the transmission assembly.

5. The tablet press punch cleaning device according to claim 4, It is characterized in that The shell is provided with an extension portion communicated with the interior thereof, and the extension portion is arranged along a sliding direction of the shell toward the cavity.

6. The cleaning device for tablet press punch according to claim 5, It is characterized in that A groove is provided on the outer wall of the shell, a fixing ring is provided on the outer wall of the mold, and an inserting rod which is slidably connected with the fixing ring and is engaged with the groove.

7. The cleaning device for tablet press punch according to claim 6, It is characterized in that A protective pad is provided at one end of the extension portion facing the center of the cavity.

8. The tablet press punch cleaning device according to claim 7, It is characterized in that The shell is a closed cylinder.

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