Double-layer tablet press

Abstract

The utility model relates to the technical field of pharmaceutical tablet pressing equipment, in particular to a double-layer tablet pressing machine which comprises a base, a workbench is rotatably mounted on the base, a plurality of medicine injection holes are annularly arrayed in the upper end face of the workbench, a mounting groove is formed in the lower end of each medicine injection hole, a supporting rod is rotatably mounted in each mounting groove, and a tension spring is arranged between each supporting rod and the corresponding mounting groove. A tray matched with the medicine injection hole is arranged at the tail end of the supporting rod, an ejector rod is arranged at the bottom end of the tray, and an inclined medicine discharging table is arranged on one side of the workbench. During use, when the medicine injection hole carrying tablets is transferred to the medicine discharging table, the tension spring pulls the tray to be transferred, the tablets are transferred from the medicine injection hole, and the tablets are shaken off from the tray to the medicine discharging table. The tray, the supporting rod and the like are all arranged in the workbench in a hidden mode, the number of external components is reduced, then the occupied area of equipment inside and outside the shell is reduced, more distribution space is reserved for other components, it is avoided that the attractiveness is affected due to equipment accumulation, the equipment installation gap is larger, and follow-up maintenance and replacement are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of pharmaceutical tablet pressing equipment, and in particular to a double-layer tablet pressing machine. Background Art

[0002] At present, tablets have become one of the dosage forms with many varieties, large output, wide application, convenient use and storage, and stable quality. Double-layer tablets require that each layer contains particles composed of different excipients or different drugs.

[0003] The equipment for producing double-layer tablets is a rotary double-layer tablet press, which mainly includes a rotary table, two sets of material filling systems, a tablet pressing device, and a tablet discharging device. The two sets of material filling systems fill the same medicine hole on the rotary table one by one, and the tablet pressing device pre-presses and then presses the tablets, and finally presses the tablets out through the tablet discharging device.

[0004] Most of the existing tablet ejection devices use the top ring at the end of the hydraulic rod to push the tablet out of the medicine hole. This is installed together with the tablet pressing device, the drug injection system, and the drive of the dust sweeping mechanism in the machine housing, which is too tight and not very beautiful. It is also inconvenient for workers to reach out and operate the subsequent maintenance. In addition, during the tablet pressing process, even if there is a dust suction mechanism, dust is inevitably generated. Dust can easily penetrate into the telescopic end of the hydraulic rod, causing blockage; and the infiltrated dust will also cause the inner wall of the fixed end of the hydraulic rod to constantly rub against the outer wall of the extended end, which will shorten the service life of the hydraulic rod over the years.

[0005] To this end, the present application provides a double-layer tablet press, which is equipped with a hidden tablet discharging mechanism to reduce the space occupied in the casing and make the equipment layout clearer. Utility Model Content

[0006] The purpose of the present application is to solve the problems existing in the prior art and to propose a double-layer tablet press.

[0007] In order to achieve the above purpose, this application adopts the following technical solutions:

[0008] A double-layer tablet press comprises a base, on which a workbench is rotatably mounted, a plurality of injection holes are arranged in a circular array on the upper end surface of the workbench, a mounting groove is arranged at the lower end of each injection hole, a support rod is rotatably mounted in the mounting groove, a tension spring is arranged between the support rod and the mounting groove, a tray matching the injection hole is arranged at the end of the support rod, a push rod is arranged at the bottom end of the tray, an inclined medicine placing table is arranged on one side of the workbench, one side of the medicine placing table is in cross section, and the other side and the surface of the workbench are provided with an arc surface.

[0009] Preferably, a plurality of wedge-shaped platforms are arrayed on the lower medicine platform.

[0010] Preferably, a universal ball is universally mounted on the bottom end of the push rod.

[0011] Preferably, two arc-shaped clamping plates are provided at intervals on the outer edge surface of the tray, and two arc-shaped sealing plates are provided at the bottom end of the injection hole in the gap between the two clamping plates.

[0012] Preferably, the interval between the center lines of the two clamping plates is less than 180°.

[0013] Preferably, the arc length of the two clamping plates is less than half of the circumference of the tray.

[0014] Preferably, the medicine dispensing table and the medicine injection machine are arranged alternately.

[0015] Compared with the prior art, the present application provides a double-layer tablet press, which has the following beneficial effects:

[0016] When in use, two groups of injection machines inject different powder particles alternately. The particles fall onto the tray, and then are compressed by the tablet pressing device, and the tablets are extruded and formed on the tray. As the workbench rotates, the injection hole carrying the tablet is transferred to the lower medicine table area. Under the action of the tension spring, the support rod deflects, the tray shifts, and the tablet is transferred from the injection hole; and because the ejector rod falls from the side of the lower medicine table section to the lower medicine table, the ejector rod will have impact vibration, thereby shaking the tablet off the tray, and sliding down from the lower medicine table and falling into the collector. The ejector rod that falls on the lower medicine table will be transferred to the end surface of the base along the arc surface of the lower medicine table for the next cycle.

[0017] The tray, support rods, etc. are all hidden inside the workbench, reducing the number of external components, and then reducing the area occupied by the equipment inside and outside the shell, leaving more distribution space for other components, which not only avoids the accumulation of equipment and affects the aesthetics, but also makes the equipment installation gap larger, which is convenient for subsequent maintenance and replacement. In addition, no additional power is required for film output, and it can continue to operate by itself. There is no need to increase the waiting time for film output, which improves production efficiency.

[0018] Other advantages, objectives and features of the present application will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of this application.

[0020] Figure 2 This is a three-dimensional schematic diagram of the present application after removing the workbench.

[0021] Figure 3 This is the front view of the application.

[0022] Figure 4 For this application Figure 3 Schematic diagram of the cross section at AA.

[0023] Figure 5 For this application Figure 4 Local schematic diagram of point A.

[0024] Figure 6 This is a three-dimensional schematic diagram of the tray connection of this application.

[0025] In the figure: 1. base; 2. workbench; 3. injection hole; 4. medicine dispensing table; 5. mounting slot; 6. support rod; 7. tension spring; 8. tray; 9. push rod; 10. wedge table; 11. universal ball; 12. clamping plate; 13. sealing plate. DETAILED DESCRIPTION

[0026] The following will be combined with the attached examples of the present application Figure 1-6 , the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0027] In order to solve the problems existing in the prior art, the present embodiment provides a double-layer tablet press, including a base 1, on which a workbench 2 is rotatably mounted, and the upper end surface of the workbench 2 is provided with a ring array with a plurality of injection holes 3, and the lower end of each injection hole 3 is provided with a mounting groove 5 that passes through the bottom end of the base 1, and a support rod 6 is rotatably mounted in the mounting groove 5, and a tension spring 7 is provided between the support rod 6 and the mounting groove 5, and a tray 8 that cooperates with the injection hole 3 is provided at the end of the support rod 6, and a top rod 9 is provided at the bottom end of the tray 8, and an inclined medicine lowering table 4 is provided on one side of the workbench 2, and one side of the medicine lowering table 4 is in cross section, and the other side and the surface of the workbench 2 are provided with an arc surface.

[0028] Details of the principles of this program:

[0029] A double-layer tablet press comprises a base 1, which is fixed in a casing via fasteners. A rotating shaft runs through the axis of the base 1, a workbench 2 is fixed on the rotating shaft, and the rotating shaft is connected by a motor and a transmission assembly arranged in the casing, thereby driving the workbench 2 to rotate at equal intervals. Two injection machines and a vacuum cleaner are suspended above the workbench 2 at intervals, and the two injection machines are arranged adjacent to each other.

[0030] There are a number of injection holes 3 in a circular array on the upper end face of the workbench 2, and the injection holes 3 pass through the workbench 2. The injection tube of the injection machine is suspended directly above the injection hole 3. A mounting groove 5 is provided at the lower end of each injection hole 3, and the mounting groove 5 passes through the bottom end of the workbench 2 and is open at the lower end. A support rod 6 is rotatably installed in the mounting groove 5, and a tension spring 7 is connected to the bottom end of the middle part of the support rod 6. A mounting plate is provided at the bottom opening of the mounting groove 5, and the bottom end of the tension spring 7 is installed on the mounting plate. A tray 8 that cooperates with the injection hole 3 is provided at the end of the support rod 6, and a sink groove is provided on the end face of the tray 8, and the tray 8 blocks the bottom end of the injection hole 3. A top rod 9 is provided at the bottom end of the tray 8, and an inclined medicine lowering platform 4 is provided on one side of the workbench 2. The medicine lowering platform 4 has a cross-section on one side and an arc surface on the other side and the surface of the workbench 2.

[0031] When in use, two groups of injection machines inject different powder particles alternately. The particles fall onto the tray 8, and then are pressed by the tablet pressing device, and the tablets are extruded and formed on the tray 8. In this process, the ejector 9 is against the surface of the base 1 so that the tray 8 always tightly blocks the injection hole 3. As the workbench 2 rotates, the injection hole 3 carrying the tablet is transferred to the area of ​​the lower medicine table 4. The lower medicine table 4 sinks relative to the workbench 2. Under the action of the tension spring 7, the support rod 6 deflects, and the tray 8 is transferred to drive the tablet to be transferred from the injection hole 3; and because the ejector 9 falls from the side of the cross section of the lower medicine table 4 to the lower medicine table 4, the ejector 9 will have impact vibration, thereby shaking the tablet off the tray 8, and sliding down from the lower medicine table 4 and falling into the collector. The ejector 9 that falls on the lower medicine table 4 will be transferred to the end face of the base 1 along the curved surface of the lower medicine table 4 for the next cycle.

[0032] In this embodiment, the tray 8, support rod 6, etc. are all hidden in the workbench 2, reducing the number of external components, thereby reducing the area occupied by the equipment inside and outside the shell, leaving more distribution space for other components, avoiding equipment accumulation and affecting the aesthetics, and making the equipment installation gap larger, which is convenient for subsequent maintenance and replacement. In addition, no additional power is required for film output, and it can continue to operate by itself. There is no need to increase the waiting time for film output, which improves production efficiency.

[0033] In this embodiment, a vacuum cleaner is also provided on the side of the medicine dispensing table 4, through which the residual medicine powder in the medicine injection hole 3 is collected to prevent the residual medicine powder from falling onto the table surface when the push rod 9 moves along the curved edge of the medicine dispensing table 4, and is pushed by the bottom end of the push rod 9 to fall into the contact surface between the workbench 2 and the base 1.

[0034] In a further embodiment of the present invention, a plurality of wedge-shaped platforms 10 are arranged on the medicine placing platform 4, so that the ejector rod 9 performs multiple falling vibrations to ensure that the tablets fall from the tray 8.

[0035] In a further embodiment of the present invention, a universal ball 11 is universally mounted on the bottom end of the push rod 9 to reduce the friction between the push rod 9 and the surface of the base 1 and improve the smoothness of the movement of the push rod 9.

[0036] In a further embodiment of the present scheme, in order to prevent the tablets from being stuck in the tray 8 or the injection hole 3, two arc-shaped clamping plates 12 are provided at intervals on the outer edge of the tray 8, and two arc-shaped sealing plates 13 are provided at the gap between the two clamping plates 12 at the bottom of the injection hole 3. The tray 8 is against the bottom of the injection hole 3, and the clamping plates 12 and the sealing plates 13 are interlaced to form a closed ring, which is a container for tablet molding. After the tablets are extruded and formed, when the tablets are moved to the lower medicine table 4, under the action of the tension spring 7, the push rod 9 drives the tray 8 to fall, and the two clamping plates 12 clamp the tablets out of the ring, and then vibrate on the lower medicine table 4 to shake the tablets off.

[0037] In a further embodiment of the present invention, the interval between the center lines of the two clamping plates 12 is less than 180°, so as to avoid the two clamping plates 12 being symmetrically arranged to clamp the tablets, thereby preventing the tablets from falling off and ensuring stable tablet feeding.

[0038] In a further embodiment of the present invention, the arc length of the two clamping plates 12 is less than half of the circumference of the tray 8. This prevents the clamping plates 12 from being too long and causing the tablets to be too tightly clamped, thus affecting the tablets' detachment.

[0039] In a further embodiment of the present invention, the medicine dispensing platform 4 and the medicine injecting machine are arranged alternately to avoid the problem of medicine injection when the tray 8 is separated from the medicine injection hole 3.

[0040] In this solution, the rotational horizontal plane of the support rod 6 is not lower than the end surface of the tablet after forming, so as to avoid the injection hole 3 or the sealing plate 13 abutting against or clamping the tablet when the tray 8 deflects, so that the tablet cannot fall off.

[0041] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and application concept of the present application, which should be covered by the protection scope of the present application.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. Double-layer tablet press, characterized in that: The invention comprises a base (1), on which a workbench (2) is rotatably mounted, a plurality of injection holes (3) are arranged in a circular array on the upper end surface of the workbench (2), a mounting groove (5) is arranged at the lower end of each injection hole (3), a support rod (6) is rotatably mounted in the mounting groove (5), a tension spring (7) is arranged between the support rod (6) and the mounting groove (5), a tray (8) matching the injection hole (3) is arranged at the end of the support rod (6), a top rod (9) is arranged at the bottom end of the tray (8), and an inclined lower medicine table (4) is arranged on one side of the workbench (2), one side of the lower medicine table (4) is in a cross-section, and the other side is provided with an arc surface with the surface of the workbench (2).

2. The double-layer tablet press according to claim 1, characterized in that: A plurality of wedge-shaped platforms (10) are arranged in an array on the lower medicine platform (4).

3. The double-layer tablet press according to claim 1, characterized in that: A universal ball (11) is universally mounted on the bottom end of the push rod (9).

4. The double-layer tablet press according to claim 1, characterized in that: Two arc-shaped clamping plates (12) are arranged at intervals on the outer edge surface of the tray (8), and two arc-shaped sealing plates (13) are arranged at the bottom end of the injection hole (3) in the gap between the two clamping plates (12).

5. The double-layer tablet press according to claim 4, characterized in that: The interval between the center lines of the two clamping plates (12) is less than 180°.

6. The double-layer tablet press according to claim 5, characterized in that: The arc length of the two clamping plates (12) is less than half the circumference of the tray (8).

7. The double-layer tablet press according to claim 1, characterized in that: The medicine dispensing platform (4) and the medicine injecting machine are arranged alternately.

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