Tablet press for solid preparation

Abstract

The utility model discloses a tablet press for solid preparations, and belongs to the field of solid preparation processing. A tablet press for solid preparations comprises a bearing disc with a downward pressing assembly, a material pressing groove is formed in the bearing disc, a material pressing frame is arranged on the material pressing groove, a negative pressure suction pipe is arranged on the inner wall of the material pressing frame, a negative pressure channel is formed in the middle of the bearing disc, and the negative pressure channel is communicated with the negative pressure suction pipe; according to the vacuum powder suction machine, the negative pressure suction effect generated in the negative pressure suction pipe can be utilized to suck redundant raw materials on the step shape, then the redundant raw materials are collected into the collection box of the vacuum powder suction machine for subsequent use, and then the push plate can push a formed solid preparation out of the material pressing frame. And therefore, when the excess materials are collected, the redundant excess materials can be prevented from being brought out of the material pressing groove by the push plate, the excess materials are prevented from falling onto the bearing disc, and waste of the raw materials is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of solid preparation processing, in particular to a tablet press for solid preparations. Background Art

[0002] Commonly used solid dosage forms include powders, granules, tablets, capsules, pills, films, etc., accounting for about 70% of pharmaceutical preparations. The common characteristics of solid preparations are that compared with liquid preparations, they have good physical and chemical stability, low production and manufacturing costs, and are easy to take and carry; the pre-treatment of the preparation process undergoes the same unit operation to ensure uniform mixing and accurate dosage of the drugs, and there is a close connection between the dosage forms; the drug must first dissolve in the body before it can pass through the physiological membrane and be absorbed into the blood circulation. During the preparation of solid preparations, a tablet press is required to realize the flattening preparation of the solid preparation, mainly by driving the tablet plate to move downward to realize the tableting of the raw materials inside the tabletting tank to form a solid dosage form.

[0003] After searching, the Chinese patent publication number CN219461945U discloses a tablet press for solid preparations, including a support frame, a rotating rod is rotatably installed at the bottom of the support frame, a carrying plate is installed on the top of the rotating rod, and tablet pressing assemblies are arranged at equal intervals on the outer ends of the carrying plate; the top of the support frame is connected to the connecting plate through a second telescopic rod, and the two ends of the connecting plate are connected to the support frame through guide assemblies; a connecting rod is arranged at one end of the bottom of the connecting plate, a tablet pressing plate is arranged at the bottom of the connecting rod, and a feeding pipe is arranged at the other end of the connecting plate; a raw material storage box is installed on the top of the support frame, and a feeding assembly is arranged on the top of the raw material storage box; a pushing assembly is arranged at one end of the raw material storage box, and a feeding assembly for feeding the feeding pipe is arranged at the bottom of the other end.

[0004] In the above scheme, although the excess raw materials can be moved to the storage tank through the discharge port, some of the excess materials will still accumulate between the pressing tank and the discharge port. Moreover, when the pushing block pushes out the solid preparation prepared inside the tablet pressing tank, the solid preparation will drive some of the accumulated excess materials to fall onto the supporting plate, resulting in a waste of raw materials. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that a part of residual material will be accumulated between the pressing groove and the discharge port, and when the pushing block pushes out the solid preparation prepared in the tablet pressing groove, the solid preparation will drive a part of the accumulated residual material to fall onto the carrying plate, resulting in a waste of raw materials, and a tablet pressing machine for solid preparations is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tablet press for solid preparations comprises a carrier plate with a pressing assembly, wherein the carrier plate is provided with a pressing groove, a pressing frame is provided on the pressing groove, a negative pressure suction pipe is provided on the inner wall of the pressing frame, a negative pressure channel is provided in the middle of the carrier plate, and the negative pressure channel is connected to the negative pressure suction pipe.

[0008] In order to facilitate the storage of excess raw materials, preferably, an expansion cavity is opened in the material pressing frame, the expansion cavity and the material pressing groove form a step shape, and the input end of the negative pressure suction pipe cooperates with the expansion cavity.

[0009] In order to facilitate the tableting of the raw materials, the lower pressing assembly further includes a lower pressing plate, a rotating shaft is rotatably connected to the middle of the supporting plate, an extension plate is fixedly connected to the top of the rotating shaft, the lower pressing plate is lifted and connected to one end of the extension plate, and a lowering barrel is fixedly connected to the other end of the extension plate.

[0010] In order to facilitate the control of the negative pressure channel, preferably, a blocking plate is fixedly connected to the middle of the rotating shaft extending into the negative pressure channel, and a through hole is opened on the blocking plate. When the rotating shaft rotates, the blocking plate can block the negative pressure channel.

[0011] In order to facilitate the pushing out of the formed tablets, preferably, a push rod is lifted and connected in the pressing groove, and a push plate is fixedly connected to the top of the push rod.

[0012] In order to facilitate the adsorption and collection of excess raw materials, preferably, a connecting pipe is provided on the carrier plate, the connecting pipe is fixedly connected to the input end of the vacuum powder suction machine, and the negative pressure channel is connected to the connecting pipe.

[0013] Compared with the prior art, the utility model provides a tablet press for solid preparations, which has the following beneficial effects:

[0014] 1. The tablet press for solid preparations absorbs excess raw materials on the steps by generating a negative pressure adsorption effect in the negative pressure suction tube, and then collects the excess raw materials into a collection box of a vacuum powder suction machine for subsequent use. Subsequently, the push plate can push the formed solid preparations to the outside of the pressing frame, thereby collecting the excess materials and preventing the push plate from bringing the excess materials out of the pressing trough, preventing the excess materials from falling onto the carrier plate, and preventing the waste of raw materials;

[0015] 2. The tablet press for solid preparations rotates in real time with the rotating shaft through the sealing plate, so that a negative pressure adsorption effect is generated in the negative pressure suction pipes in one group of pressing grooves to adsorb excess raw materials on the step. At this time, the negative pressure suction pipes in other pressing grooves cannot produce negative pressure adsorption effect, thereby ensuring that the raw materials in other pressing grooves are not adsorbed into the vacuum powder suction machine, thereby improving the practicality of the device.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can use the negative pressure adsorption effect generated in the negative pressure suction tube to adsorb the excess raw materials on the step, and then collect the excess raw materials into the collection box of the vacuum powder suction machine for subsequent use. Then, the push plate can push the formed solid preparation to the outside of the pressing frame, and then the residual material can be collected while preventing the push plate from bringing the excess residual material out of the pressing trough, preventing the residual material from falling onto the carrying plate, and preventing waste of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a tablet press for solid preparations proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a cross-section of a carrier plate of a tablet press for solid preparations proposed in the utility model;

[0019] Figure 3 This is a schematic diagram of a cross-section of a pressing frame of a tablet press for solid preparations proposed in the utility model;

[0020] Figure 4 The utility model is a partial schematic diagram of a tablet pressing machine for solid preparations.

[0021] In the figure: 1. carrier plate; 101. negative pressure channel; 2. pressing frame; 201. expansion chamber; 202. pressing groove; 3. negative pressure straw; 4. rotating shaft; 401. sealing plate; 402. through hole; 5. extension plate; 501. lower pressure plate; 6. push rod; 601. push plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 4A tablet press for solid preparations includes a carrier plate 1, which is usually placed in a working box or a sealed box for use, and is used for processing and tableting raw materials. The cross section of the carrier plate 1 is circular, and a plurality of groups of pressing grooves 202 are provided on the carrier plate 1, and the pressing grooves 202 are evenly distributed on the carrier plate 1 in a circumferential manner. Figure 1 Four groups are shown in FIG. 2 . In addition, a pressing frame 2 is provided on the pressing groove 202 . The cross section of the pressing frame 2 is circular, and the inner diameter of the pressing frame 2 is the same as the diameter of the pressing groove 202 .

[0026] In addition, an expansion chamber 201 is opened in the pressing frame 2, and the expansion chamber 201 and the pressing groove 202 form a step shape, which can accommodate or store excess raw materials. A negative pressure channel 101 is opened in the middle of the supporting plate 1, and a negative pressure straw 3 is fixedly connected in the expansion chamber 201, and the negative pressure channel 101 is communicated with the negative pressure straw 3.

[0027] A rotating shaft 4 is rotatably connected in the middle of the supporting plate 1, and a stepper motor or an electric motor can be installed at the bottom of the supporting plate 1 to drive the rotating shaft 4 to rotate. An extension plate 5 is also fixedly connected to the top of the rotating shaft 4. The lower pressure plate 501 can be lifted and connected to one end of the extension plate 5 through an electric telescopic rod, and a unloading barrel is fixedly connected to the other end of the extension plate 5. The unloading barrel is used for unloading raw materials. Please refer to the patent publication number: CN218962375U, which is the prior art.

[0028] The lower pressing plate 501 is driven downward by an electric telescopic rod to press the raw materials in the pressing trough 202 into tablets to make solid preparations for medicinal use. In order to facilitate the pushing out of the formed solid preparations, a push rod 6 is connected to the pressing trough 202 for lifting and lowering. The push rod 6 can be driven to move up and down by the electric telescopic rod, and a push plate 601 is fixedly connected to the top of the push rod 6 for pushing the formed solid preparations to the outside of the pressing frame 2 for collection.

[0029] It needs to be explained that the middle part of the rotating shaft 4 extends to the negative pressure channel 101 and is fixedly connected to a sealing plate 401. A through hole 402 is opened on the sealing plate 401, which can make the cavities between the sealing plates 401 interconnected. The sealing plates 401 described in the device are three groups, and the pressing grooves 202 are four groups, and the three groups of sealing plates 401 can respectively block the channels from the negative pressure channel 101 to the pressing groove 202, and the sealing plates 401 can also be set to multiple groups, but the pressing frame 2 needs to have one more group than the number of sealing plates 401, and a connecting pipe is provided on the supporting plate 1, and the connecting pipe is fixedly connected to the input end of the vacuum powder suction machine, and the negative pressure channel 101 is connected to the connecting pipe.

[0030] The principle is as follows, please refer to Figure 1As shown in the figure, the extension plate 5 on the rotating shaft 4 moves to the top of the pressing frame 2, and the lower pressing plate 501 corresponds to the pressing groove 202. A lowering barrel is also provided at the other end of the extension plate 5. Before the lower pressing plate 501 works, the rotating shaft 4 can drive the lowering barrel to fill the pressing groove 202 with raw materials respectively. At this time, the extension plate 5 is moved to the top of one group of pressing frames 2, and the electric telescopic rod is started to drive the lower pressing plate 501 to press down. In this process, the three groups of blocking plates 401 can block three groups of negative pressure channels 101. The negative pressure effect in the negative pressure channel 101 only acts on the pressing groove 202 below the lower pressing plate 501. After the lower pressing plate 501 is pressed down, the switch of the vacuum powder suction machine is then started, so that the negative pressure suction pipe 3 in the pressing groove 202 produces a negative pressure adsorption effect to adsorb the excess raw materials on the step. At this time, the negative pressure suction pipes 3 in other pressing grooves 202 cannot produce a negative pressure adsorption effect, thereby ensuring that the raw materials in other pressing grooves 202 are not adsorbed into the vacuum powder suction machine, thereby improving the practicability of the device.

[0031] Subsequently, the excess raw materials are collected in the collection box of the vacuum powder suction machine for subsequent use, and then the push plate 601 can push the formed solid preparation to the outside of the pressing frame 2, so that the residual material can be collected while preventing the push plate 601 from bringing the excess residual material out of the pressing groove 202, preventing the residual material from falling onto the carrying plate 1, and preventing the raw materials from being wasted.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tablet press for solid preparations, comprising a carrier plate (1) with a pressing assembly, wherein a pressing groove (202) is provided on the carrier plate (1), characterized in that: A material pressing frame (2) is arranged on the material pressing groove (202), a negative pressure suction pipe (3) is arranged on the inner wall of the material pressing frame (2), a negative pressure channel (101) is opened in the middle of the carrier plate (1), and the negative pressure channel (101) is connected to the negative pressure suction pipe (3).

2. A tablet press for solid preparations according to claim 1, characterized in that: An expansion chamber (201) is provided in the material pressing frame (2), the expansion chamber (201) and the material pressing groove (202) form a step shape, and the input end of the negative pressure suction tube (3) cooperates with the expansion chamber (201).

3. A tablet press for solid preparations according to claim 1, characterized in that: The pressing assembly comprises a pressing plate (501), the middle of the supporting plate (1) is rotatably connected to a rotating shaft (4), the top of the rotating shaft (4) is fixedly connected to an extension plate (5), the pressing plate (501) is lifted and connected to one end of the extension plate (5), and the other end of the extension plate (5) is fixedly connected to a lower barrel.

4. A tablet press for solid preparations according to claim 3, characterized in that: The middle portion of the rotating shaft (4) extends into the negative pressure channel (101) and is fixedly connected to a blocking plate (401). A through hole (402) is provided on the blocking plate (401). When the rotating shaft (4) rotates, the blocking plate (401) can block the negative pressure channel (101).

5. A tablet press for solid preparations according to claim 1, characterized in that: A push rod (6) is connected in a lifting manner in the material pressing groove (202), and a push plate (601) is fixedly connected to the top of the push rod (6).

6. A tablet press for solid preparations according to claim 1, characterized in that: The carrier plate (1) is provided with a connecting pipe, the connecting pipe is fixedly connected to the input end of the vacuum powder suction machine, and the negative pressure channel (101) is connected to the connecting pipe.

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