Pill preparation device

Abstract

The invention belongs to the technical field of pill processing, and particularly relates to a pill preparation device which is composed of a plurality of rotating plates on a machine table, an upper punching die, a lower punching die, a pressure equalizing assembly and the like. A sliding cylinder of the pressure equalizing assembly is installed on a fourth rotating plate, and a first piston and a second piston in the sliding cylinder are in sealed sliding connection and are filled with first liquid. The upper punching die is fixedly connected with the second piston, and an upper pressing wheel and a lower pressing wheel of a rotating shaft on the machine table apply pressure to the first piston and the lower punching die respectively. Pressure is transmitted through the first liquid to prevent lateral abrasion of the upper punching die, the service life is prolonged, and high-quality punching is guaranteed. The sliding cylinder is detachably connected with the fourth rotating plate, so that the maintenance cost is reduced. After abrasion, the first liquid leaks, the upper punching die cannot conduct punching operation, and bad products are avoided. The liquid receiving piece collects leaked liquid and mixes the leaked liquid with the first liquid to emit fluorescence to prompt abrasion so as to facilitate maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of pill processing, and in particular relates to a pill preparation device. Background Art

[0002] Among the Tibetan medicine preparations, pills are usually the main ones. Pills refer to spherical or quasi-spherical preparations made of fine powder of medicinal materials or medicinal material extracts plus suitable adhesive excipients. At present, in order to improve the processing efficiency of pills, rotary tablet presses are usually used for processing. Spherical pills can be produced by changing the shape of the die end of the rotary tablet press into a spherical shape.

[0003] In the operation of the existing rotary tablet press, the contact force point between the upper pressing wheel and the top of the upper punch changes with the migration of the upper pressing wheel position during the contact and pressing process, so that when the upper pressing wheel just contacts and separates from the top of the upper punch, the pressure direction applied by the upper pressing wheel on the end of the punch forms a certain angle with the force surface of the top of the upper punch, which increases the degree of wear between the side of the upper punch and the upper template, and easily causes the upper punch to wear quickly, which reduces the service life of the upper punch. In addition, continuing the tableting operation after it is severely worn will also affect the stamping quality of the tableted product. Therefore, in response to the above problems, we propose a pill preparation device.

[0004] The methods described in this section are not necessarily methods that have been previously conceived or employed. Unless otherwise indicated, it should not be assumed that any method described in this section is considered to be prior art simply because it is included in this section. Similarly, unless otherwise indicated, the issues mentioned in this section should not be considered to have been recognized in any prior art. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present invention discloses a pill preparation device.

[0006] To achieve the above object, a technical solution adopted by the present invention is:

[0007] A pill preparation device comprises a first rotating plate, a second rotating plate, a third rotating plate and a fourth rotating plate which are arranged on the machine platform from top to bottom in sequence, and also comprises an upper punch and a lower punch, wherein the outer edges of the first rotating plate and the third rotating plate are respectively provided with a plurality of upper punches and lower punches, the outer edge of the second rotating plate is provided with a tabletting die groove corresponding to the upper punch and the lower punch, the fourth rotating plate is detachably connected with a pressure equalizing assembly corresponding to each position of the upper punch, the pressure equalizing assembly comprises a slide cylinder, a first piston, a second piston and a stopper, the slide cylinder is mounted on the fourth rotating plate, the first movable The plug and the second piston are sealingly and slidingly connected in the slide cylinder from top to bottom, the part of the slide cylinder between the first piston and the second piston is filled with a first liquid, the limit member is arranged at the upper end of the slide cylinder to limit the first piston from sliding upward out of the slide cylinder, the upper end of the upper punch is fixedly connected to the second piston, and a rotatable shaft is also installed on the machine platform, the shaft is fixedly connected to an upper pressure wheel located above the fourth rotating plate and a lower pressure wheel located below the first rotating plate, the upper pressure wheel is used to apply downward pressure to the first piston, and the lower pressure wheel is used to apply upward pressure to the lower punch.

[0008] Furthermore, a return spring located between the third rotating plate and the second piston is provided on the outer side of the upper punch.

[0009] Furthermore, the limit member is a circular ring structure, whose inner diameter is smaller than the inner diameter of the slide cylinder. The first piston includes a small diameter section and a large diameter section distributed up and down. The first piston is sealed and slidably connected to the inner wall of the slide cylinder through the large diameter section. The outer diameter of the small diameter section of the first piston is smaller than the inner diameter of the limit member.

[0010] Furthermore, a guide groove penetrating through the lower end of the slide cylinder is opened on the upper inner side of the slide cylinder. When the large diameter section of the first piston abuts against the lower end of the limit member, the large diameter section of the first piston will close the upper end of the guide groove. When the first piston is pressed down by the upper pressure wheel, the large diameter section of the first piston will release the closure of the upper end of the guide groove.

[0011] Furthermore, a plurality of guide grooves are arranged around the circumference of the slide cylinder.

[0012] Furthermore, a guide ring groove communicating with the guide groove is formed on the inner wall of the slide cylinder. When the large diameter section of the first piston abuts against the lower end of the limiting member, the large diameter section of the first piston will close the inner part of the guide ring groove.

[0013] Furthermore, the pressure equalizing assembly also includes a liquid contacting part, which includes an inner cylinder and an outer cylinder, the inner cylinder is arranged on the inner side of the outer cylinder at intervals, the inner cylinder and the lower end of the outer cylinder are connected to each other, the liquid contacting part is arranged on the lower side of the slide cylinder to collect the first liquid discharged from the guide groove, and the outer diameter of the inner cylinder is smaller than the inner diameter of the slide cylinder.

[0014] Furthermore, the liquid contact part is made of a transparent material, and a second liquid is contained in the liquid contact part. The first liquid and the second liquid are two fluorescent liquids that can emit fluorescence after mixing.

[0015] Furthermore, the fourth rotating plate is provided with an installation groove for installing the pressure equalizing assembly, and the upper and lower sides of the installation groove are provided with retaining spring grooves. The limit member, the slide cylinder and the liquid contact member are stacked and assembled in the installation groove from top to bottom, and retaining springs are installed in both retaining spring grooves. The retaining spring on the upper side is used to limit the limit member from detaching upward from the installation groove, and the retaining spring on the lower side is used to limit the liquid contact member from detaching downward from the installation groove.

[0016] Furthermore, the liquid contact part also includes a bottom ring plate and an intermediate cylinder, the lower end of the outer cylinder is fixedly connected to the outer periphery of the bottom ring plate, the upper end of the intermediate cylinder is fixedly connected to the inner periphery of the bottom ring plate, the lower end of the inner cylinder and the lower end of the intermediate cylinder are fixedly connected to each other, and the lower end of the inner cylinder and the lower end of the intermediate cylinder both extend downward from the mounting groove.

[0017] The present invention discloses a pill preparation device, which transmits pressure through a first liquid to prevent lateral wear of the upper punch, extend its service life, and ensure high-quality stamping operations. The slide cylinder and the fourth rotating plate are detachably connected, which greatly reduces maintenance costs. When the piston and the slide cylinder are severely worn, leakage of the first liquid will make the upper punch unable to perform stamping operations, thereby avoiding the production of defective tableting products. In addition, the device is provided with a reset spring, a guide groove and other structures, and the liquid receiving part can collect the leaked liquid, and emit fluorescence after mixing with the first liquid, so as to remind the staff of the wear condition of the upper punch so as to facilitate timely maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of a partial cross-sectional structure of an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0021] Figure 3 A top view of a local structure of an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a slide barrel in one embodiment of the present invention;

[0023] Figure 5FIG. 1 is a schematic diagram of the connection of the liquid contact parts in one embodiment of the present invention.

[0024] The meanings of the symbols in the accompanying drawings are:

[0025] Rotating shaft 1, first rotating plate 2, lower pressure wheel 21, second rotating plate 3, third rotating plate 4, fourth rotating plate 5, mounting groove 51, retaining ring groove 52, retaining ring 53, upper pressure wheel 54, upper punch 6, return spring 61, lower punch 7, pressure equalizing assembly 8, slide cylinder 81, guide groove 811, guide ring groove 812, first piston 82, second piston 83, limit piece 84, liquid contact piece 85, inner cylinder 851, outer cylinder 852, bottom ring plate 853, intermediate cylinder 854. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Reference Figure 1-Figure 5 As shown, the pill preparation device of this embodiment includes a first rotating plate 2, a second rotating plate 3, a third rotating plate 4 and a fourth rotating plate 5 which are arranged on a machine table (not numbered) from top to bottom in sequence. It also includes an upper punch 6 and a lower punch 7. The outer edges of the first rotating plate 2 and the third rotating plate 4 are respectively provided with a plurality of upper punches 6 and lower punches 7, the outer edge of the second rotating plate 3 is provided with tableting die grooves corresponding to the upper punches 6 and the lower punches 7, and the fourth rotating plate 5 is detachably connected with a pressure equalizing assembly 8 corresponding to the position of each upper punch 6, and the pressure equalizing assembly 8 includes a slide 81, a first piston 82, a second piston 83 and a stopper 84, the slide 81 is installed on the fourth rotating plate 5, the first piston 82 and the second piston 83 are sealingly slidably connected in the slide 81 from top to bottom, and the slide 8 The portion between the first piston 82 and the second piston 83 is filled with the first liquid. The stopper 84 is arranged at the upper end of the slide 81 to limit the first piston 82 from sliding upward out of the slide 81. The upper end of the upper punch 6 is fixedly connected to the second piston 83. A rotatable shaft 1 is also installed on the machine platform. The shaft 1 is fixedly connected to an upper pressing wheel 54 located above the fourth rotating plate 5 and a lower pressing wheel 21 located below the first rotating plate 2. The upper pressing wheel 54 is used to press the first piston 82 downward, and the lower pressing wheel 21 is used to press the lower punch 7 upward.

[0028] When producing tablet products, the rotating shaft 1 is driven by the driving motor to rotate, and the upper pressing wheel 54 and the lower pressing wheel 21 are driven to rotate around the rotating shaft 1. After the upper pressing wheel 54 rotates to abut against the upper end of the first piston 82, it will press down the first piston 82, and the first piston 82 will press down the second piston 83 through the first liquid at its lower end. Since the first liquid is in uniform contact with the upper end of the second piston 83, it will positively press the second piston 83 downward, so that additional lateral wear between the upper punch 6 and the slide 81 can be avoided, so that the service life of the upper punch 6 can be extended, so that it can maintain high-quality stamping operations for a long time.

[0029] It is worth mentioning that the torque is transmitted between the first piston 82 and the second piston 83 through liquid, and the liquid is difficult to compress, so there is a high transmission efficiency between the two.

[0030] After long-term operation and severe wear between the first piston 82 and the slide cylinder 81, the first liquid in the slide cylinder 81 will leak upward from the worn gap on the side of the first piston 82 during the downward pressing of the first piston 82. In this way, the first liquid cannot form pressure to apply pressure to the second piston 83, and the upper punch 6 cannot perform the punching operation, thereby avoiding the production of defective tablet products.

[0031] Similarly, after long-term operation and severe wear between the second piston 83 and the slide cylinder 81, the first liquid in the slide cylinder 81 will leak downward from the worn gap on the side of the second piston 83 during the downward pressing of the second piston 83. In this way, the first liquid cannot form pressure to apply pressure to the second piston 83, and the upper punch 6 cannot perform the punching operation, thereby avoiding the production of defective tablet products.

[0032] In this embodiment, since the slide 81 is detachably connected to the fourth rotating plate 5, it can be replaced after being worn, so there is no need to replace the entire plate. This design can greatly reduce the maintenance cost of the device.

[0033] In this embodiment, a return spring 61 is provided on the outer side of the upper punch 6 and is located between the third rotating plate 4 and the second piston 83. The return spring 61 cooperates with the third rotating plate 4 to push the second piston 83 upward so that the second piston 83, the upper punch 6 and the first piston 82 can return to their original position after the pressure is released.

[0034] In this embodiment, the limit member 84 is a circular ring structure, and its inner diameter is smaller than the inner diameter of the slide cylinder 81. The first piston 82 includes a small diameter section and a large diameter section distributed up and down. The first piston 82 is sealed and slidably connected to the inner wall of the slide cylinder 81 through the large diameter section. The outer diameter of the small diameter section of the first piston 82 is smaller than the inner diameter of the limit member 84. When the first piston 82 moves upward until the large diameter section abuts against the limit member 84, the first piston 82 is restricted from continuing to move upward, thereby restricting the first piston 82 from sliding out of the slide cylinder 81.

[0035] In this embodiment, a guide groove 811 is opened on the upper inner side of the slide 81 and passes through the lower end of the slide 81. When the large diameter section of the first piston 82 abuts against the lower end of the limit member 84, the large diameter section of the first piston 82 will close the upper end of the guide groove 811. When the first piston 82 is pressed down by the upper pressure wheel 54, the large diameter section of the first piston 82 will release the closure of the upper end of the guide groove 811.

[0036] When the first piston 82 is not pressed down by the upper pressure wheel 54, the large diameter section of the first piston 82 will remain in contact with the lower end of the limit member 84 under the pushing action of the return spring 61 to close the upper end of the guide groove 811 and prevent the first liquid on the lower side of the first piston 82 from being discharged from the guide groove 811.

[0037] After long-term operation and severe wear between the first piston 82 and the slide cylinder 81, the first liquid will be discharged upward from the wear gap on the side of the first piston 82 under the pressure of the return spring 61. Subsequently, when the first piston 82 is pressed down by the upper pressure wheel 54, the large diameter section of the first piston 82 will move down to the lower side of the guide groove 811 to release the closure of the upper end of the guide groove 811. At this time, the first liquid located on the upper side of the large diameter section of the first piston 82 can flow into the guide groove 811 and finally flow out from the lower end of the guide groove 811. In this way, when a wear gap is generated between the first piston 82 and the slide cylinder 81 and when a wear gap is generated between the second piston 83 and the slide cylinder 81, the first liquid is discharged from the lower end of the slide cylinder 81 so that the first liquid can be collected uniformly.

[0038] In this embodiment, a plurality of guide grooves 811 are circumferentially arranged around the slide cylinder 81 , so that the first liquid leaking at different positions can be guided, thereby improving the guide efficiency.

[0039] In this embodiment, the inner wall of the slide cylinder 81 is provided with a guide ring groove 812 which is in communication with the guide groove 811. When the large diameter section of the first piston 82 abuts against the lower end of the stopper 84, the large diameter section of the first piston 82 will close the inner part of the guide ring groove 812. This arrangement can guide the first liquid leaking from all positions around the slide cylinder 81, so that the first liquid leaking upward can smoothly enter the guide groove 811.

[0040] In this embodiment, the pressure equalizing assembly 8 also includes a liquid receiving part 85, which includes an inner cylinder 851 and an outer cylinder 852. The inner cylinder 851 is arranged on the inner side of the outer cylinder 852 at an interval, and the lower ends of the inner cylinder 851 and the outer cylinder 852 are connected to each other. The liquid receiving part 85 is arranged on the lower side of the slide cylinder 81 to collect the first liquid discharged from the guide groove 811. The outer diameter of the inner cylinder 851 is smaller than the inner diameter of the slide cylinder 81.

[0041] The liquid receiving part 85 can collect the first liquid flowing down the guide groove 811. In addition, since the outer diameter of the inner cylinder 851 is smaller than the inner diameter of the slide cylinder 81, the first liquid leaked from the wear gap between the second piston 83 and the slide cylinder 81 will remain along the inner wall of the slide cylinder 81, and can directly flow into the liquid receiving part 85, so that the first liquids at two places can be collected together for subsequent maintenance.

[0042] In this embodiment, the liquid contact part 85 is made of a transparent material and contains a second liquid. The first liquid and the second liquid are two fluorescent liquids that can emit fluorescence after mixing. Specifically, one is peroxide and the other is a mixture of ester compounds and fluorescent dyes.

[0043] In this way, when the first liquid leaks into the liquid receiving part 85 and mixes with the second liquid, it can emit fluorescence. The staff can know the wear condition of the upper punch 6 by observing the fluorescence, so the relevant parts can be maintained in time.

[0044] In this embodiment, a mounting groove 51 for mounting the pressure equalizing assembly 8 is opened on the fourth rotating plate 5, and the upper and lower sides of the mounting groove 51 are provided with retaining spring grooves 52. The limiting member 84, the slide cylinder 81 and the liquid contact member 85 are stacked and assembled in the mounting groove 51 from top to bottom. The two retaining spring grooves 52 are both equipped with retaining springs 53. The upper retaining spring 53 is used to limit the limiting member 84 from detaching upward from the mounting groove 51, and the lower retaining spring 53 is used to limit the liquid contact member 85 from detaching downward from the mounting groove 51. Through this arrangement, the pressure equalizing assembly 8 can be installed on the fourth rotating plate 5 to form a detachable connection with the fourth rotating plate 5.

[0045] In this embodiment, the liquid contact part 85 further includes a bottom ring plate 853 and an intermediate cylinder 854. The lower end of the outer cylinder 852 is fixedly connected to the outer periphery of the bottom ring plate 853, the upper end of the intermediate cylinder 854 is fixedly connected to the inner periphery of the bottom ring plate 853, the lower end of the inner cylinder 851 is fixedly connected to the lower end of the intermediate cylinder 854, and the lower end of the inner cylinder 851 and the lower end of the intermediate cylinder 854 both extend downward from the mounting groove 51. This arrangement allows the mixed liquid of the first liquid and the second liquid to flow to the lower side of the mounting groove 51, so that the fluorescence is effectively exposed and the illumination range of the fluorescence is increased.

[0046] In summary, the present invention discloses a pill preparation device, which transmits pressure through a first liquid to prevent lateral wear of the upper punch, extend its service life, and ensure high-quality stamping operations. The slide cylinder and the fourth rotating plate are detachably connected, which greatly reduces maintenance costs. When the piston and the slide cylinder are severely worn, leakage of the first liquid will make the upper punch unable to perform stamping operations, thereby avoiding the production of defective tableting products. In addition, the device is provided with a reset spring, a guide groove and other structures, and the liquid receiving part can collect the leaked liquid, and fluoresce after mixing with the first liquid, prompting the staff of the wear condition of the upper punch for timely maintenance.

[0047] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A pill preparation device, comprising a first rotating plate, a second rotating plate, a third rotating plate and a fourth rotating plate arranged on a machine platform from top to bottom, characterized in that: The tool is also provided with an upper punch and a lower punch, wherein the outer edges of the first rotating plate and the third rotating plate are respectively provided with a plurality of upper punches and lower punches, and the outer edge of the second rotating plate is provided with a tabletting die groove corresponding to the upper punch and the lower punch, and the fourth rotating plate is detachably connected with a pressure equalizing assembly corresponding to each position of the upper punch, and the pressure equalizing assembly comprises a slide cylinder, a first piston, a second piston and a limiter, the slide cylinder is installed on the fourth rotating plate, the first piston and the second piston are sealingly and slidingly connected in the slide cylinder from top to bottom, the part of the slide cylinder between the first piston and the second piston is filled with a first liquid, the limiter is arranged at the upper end of the slide cylinder to limit the first piston from sliding out of the slide cylinder upward, the upper end of the upper punch is fixedly connected to the second piston, and a rotatable rotating shaft is also installed on the machine platform, the rotating shaft is fixedly connected with an upper pressing wheel located above the fourth rotating plate and a lower pressing wheel located below the first rotating plate, the upper pressing wheel is used to press the first piston downward, and the lower pressing wheel is used to press the lower punch upward.

2. A pill preparation device according to claim 1, characterized in that: The outer side of the upper punch is sleeved with a return spring located between the third rotating plate and the second piston.

3. A pill preparation device according to claim 2, characterized in that: The limiting member is a circular ring structure, and its inner diameter is smaller than the inner diameter of the slide cylinder. The first piston includes a small diameter section and a large diameter section distributed up and down. The first piston is sealingly and slidingly connected to the inner wall of the slide cylinder through the large diameter section. The outer diameter of the small diameter section of the first piston is smaller than the inner diameter of the limiting member.

4. A pill preparation device according to claim 3, characterized in that: A guide groove penetrating through the lower end of the slide is provided on the inner upper part of the slide. When the large diameter section of the first piston abuts against the lower end of the limit member, the large diameter section of the first piston will close the upper end of the guide groove. When the first piston is pressed down by the upper pressure wheel, the large diameter section of the first piston will release the closure of the upper end of the guide groove.

5. A pill preparation device according to claim 4, characterized in that: A plurality of guide grooves are arranged around the slide cylinder in a circumferential direction.

6. A pill preparation device according to claim 4, characterized in that: The inner wall of the slide cylinder is provided with a guide ring groove communicated with the guide groove. When the large diameter section of the first piston abuts against the lower end of the limiter, the large diameter section of the first piston will close the inner part of the guide ring groove.

7. A pill preparation device according to any one of claims 4 to 6, characterized in that: The pressure equalizing assembly also includes a liquid contacting part, which includes an inner cylinder and an outer cylinder. The inner cylinder is arranged on the inner side of the outer cylinder at intervals. The inner cylinder and the lower end of the outer cylinder are connected to each other. The liquid contacting part is arranged on the lower side of the slide cylinder to collect the first liquid discharged from the guide groove. The outer diameter of the inner cylinder is smaller than the inner diameter of the slide cylinder.

8. A pill preparation device according to claim 7, characterized in that: The liquid contact part is made of a transparent material, and a second liquid is contained in the liquid contact part. The first liquid and the second liquid are two fluorescent liquids that can emit fluorescence after being mixed.

9. A pill preparation device according to claim 8, characterized in that: The fourth rotating plate is provided with an installation groove for installing the pressure equalizing assembly, and the upper and lower sides of the installation groove are provided with retaining spring grooves. The limit member, the slide cylinder and the liquid contact member are stacked and assembled in the installation groove from top to bottom, and retaining springs are assembled in both retaining spring grooves. The retaining spring on the upper side is used to limit the limit member from detaching upward from the installation groove, and the retaining spring on the lower side is used to limit the liquid contact member from detaching downward from the installation groove.

10. A pill preparation device according to claim 9, characterized in that: The liquid contact part also includes a bottom ring plate and an intermediate cylinder. The lower end of the outer cylinder is fixedly connected to the outer periphery of the bottom ring plate, the upper end of the intermediate cylinder is fixedly connected to the inner periphery of the bottom ring plate, the lower end of the inner cylinder and the lower end of the intermediate cylinder are fixedly connected to each other, and the lower ends of the inner cylinder and the intermediate cylinder both extend downwardly out of the mounting groove.

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