A powder tabletting filling mechanism

Abstract

The utility model proposes a kind of powder tabletting filling mechanism, it is related to powder tabletting filling technical field, including blanking baffle, the one side of blanking baffle is provided with the smooth push plate that propelling and cleaning drug powder, the one side of smooth push plate is provided with the filling hopper that exports drug powder, the upper portion of filling hopper is provided with the push medicine rod that is cleaned inside it.The utility model has the advantages of: setting the feeding seat that drug powder is separated in the hopper bottom of material punching mechanism, and setting the pressure detection sheet that separated drug powder volume is weighed in the inside of feeding seat, quantitative separation is carried out to drug powder according to the demand of filling by pressure detection sheet, and the filling of drug powder is realized to drug powder by the cooperation of smooth push plate and filling hopper under the action of gravity after quantitative, the amount of drug powder of filling can be accurately controlled and adjusted, it is convenient to control filling of a variety of specifications of medicine, improve the convenience of powder tabletting filling.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical powder tableting technology, and in particular to a pharmaceutical powder tableting mechanism. Background Technology

[0002] Pharmaceutical powder tableting is a process that uses mechanical pressure to compress drug powder (or a mixture of powders containing excipients) into tablets of a specific shape, hardness, and size. It is one of the most commonly used technologies in solid dosage form production. Its core principle is to use pressure to tightly bind powder particles, forming structurally stable tablets that are easy to store, transport, and take. The pharmaceutical powder tableting machine is the core equipment in pharmaceutical powder tableting production, suitable for production and experimental use in the pharmaceutical, chemical, pharmacy, and hospital industries. The filling mechanism of the tableting machine is a crucial component; its function is to stably and uniformly fill the die holes (mold) of the mold, directly affecting the weight variation, content uniformity, and production stability of the tablets.

[0003] However, existing filling mechanisms are not convenient for adjusting the filling amount when compressing tablets of different volumes, and are not convenient for filling drugs of various specifications, making them relatively inconvenient to use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a powder tableting and filling mechanism to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a pharmaceutical powder tableting and filling mechanism, including a hopper installed on a tableting machine. A feeding seat for controlling the filling of pharmaceutical powder is provided at the bottom of the hopper. A pressure detection plate for weighing the pharmaceutical powder is provided inside the feeding seat. The pressure detection plate is signal-connected to a microcontroller unit for signal processing and automated control, wherein the microcontroller unit is controlled by a PLC system. The microcontroller unit is signal-connected to a discharge baffle for isolating the pharmaceutical powder. A smooth pusher plate for pushing and cleaning the pharmaceutical powder is provided on one side of the discharge baffle. A filling hopper for discharging pharmaceutical powder is provided on one side of the smooth pusher plate. A push rod for cleaning the interior of the filling hopper is provided above the filling hopper. A scraper for scraping the bottom of the push rod is fixedly installed at the bottom of the push rod.

[0006] Preferably, as described in any of the above embodiments, the top of the hopper is provided with a fixed bracket to support it, the inside of the hopper is provided with a medicine storage cavity for storing medicine powder, the top of the medicine storage cavity is provided with a sealing plug that engages and seals with the hopper, and the top of one end of the feeding seat is provided with a support sleeve that accommodates the push rod and is located on one side of the hopper.

[0007] The above technical solution is adopted: the hopper (made of stainless steel) is fixed to the tablet press frame by a fixed bracket (welded angle steel). The internal drug storage chamber (polished inner wall) stores the drug powder to avoid clumping and blockage. The top sealing plug (silicone sealing ring) locks the hopper to achieve a seal and prevent the drug powder from getting damp or contaminated. The support sleeve at one end of the feeding seat (the inner diameter matches the push rod) guides the push rod to ensure its vertical lifting and lowering and to prevent the drug powder from being pushed off course.

[0008] Preferably, in any of the above embodiments, the pressure detection plate includes a pressure sensor connected to a microcontroller unit and a load plate that carries the powder. The pressure sensor is fixedly installed inside the feeding base, and the detection end of the pressure sensor is fixedly installed with the load plate located inside the feeding base.

[0009] The above technical solution is adopted: the load plate (food-grade stainless steel) receives the medicine powder falling from the hopper, and its bottom surface is rigidly connected to the detection end of the pressure sensor, converting the gravity of the medicine powder into an electrical signal. The signal is processed by the micro-control unit and the weight of the medicine powder is displayed in real time. When the set value is reached (which can be adjusted by the PLC system), the micro-control unit triggers the discharge baffle to close, realizing the quantitative separation of medicine powder.

[0010] Preferably, in any of the above embodiments, the discharge baffle includes an electric telescopic rod connected to a microcontroller unit and an isolation plate that blocks and seals the hopper. The electric telescopic rod is fixedly installed inside the feeding seat, and one end of the electric telescopic rod is fixedly installed with an isolation plate that moves inside the feeding seat. The isolation plate is attached to the bottom surface of the hopper.

[0011] Using the above technical solution: the microcontroller controls the extension and retraction of the electric telescopic rod according to the signal from the pressure detection plate. In the initial state, the isolation plate (made of polytetrafluoroethylene) is detached from the bottom of the hopper, and the powder falls freely. When the powder weight reaches the standard, the telescopic rod pushes the isolation plate to fit against the bottom of the hopper, blocking the feeding channel and ensuring accurate metering.

[0012] Preferably, in any of the above embodiments, the smooth push plate includes a pneumatic telescopic rod connected to a microcontroller unit and a scraper seat for pushing the powder. The pneumatic telescopic rod is fixedly installed at one end of the feeding seat, and a scraper seat that moves inside the feeding seat is fixedly installed at one end of the pneumatic telescopic rod. The bottom surface of the scraper seat is in contact with the top surface of the load plate. The filling hopper is fixedly connected to the bottom of one end of the feeding seat. The filling hopper is located on one side of the pressure detection plate and is coaxially distributed with the support sleeve.

[0013] Using the above technical solution: After the powder is quantified, the micro-control unit activates the pneumatic telescopic rod, which drives the scraper seat (made of polyoxymethylene, with its bottom surface in contact with the load plate) to slide along the load plate, pushing the powder to the filling hopper (conical structure with smooth inner wall). The filling hopper is coaxial with the support sleeve, guiding the powder to fall vertically into the mold and preventing it from scattering.

[0014] Preferably, in any of the above embodiments, the push rod includes an electric push rod connected to a microcontroller unit and a medicine tray that pushes the powder inside the filling hopper. The electric push rod is fixedly installed on the top of the support sleeve, and the output end of the electric push rod is fixedly installed with a medicine tray that moves inside the support sleeve.

[0015] The above technical solution is adopted: the electric push rod (servo drive) is controlled by the micro-control unit, which drives the medicine tray (diameter matched with the filling hopper) to descend along the support sleeve, pressing the medicine powder in the filling hopper into the mold hole. The pushing depth can be preset by the PLC system to adapt to tablets of different thicknesses. After pushing is completed, the medicine tray quickly rises to avoid medicine powder residue.

[0016] Preferably, in any of the above embodiments, the scraper includes a drive motor connected to the microcontroller unit and a blade for cleaning the surface of the medicine tray. The drive motor is fixedly installed inside the medicine tray, and the output end of the drive motor is fixedly installed with a blade that fits against the bottom surface of the medicine tray.

[0017] Using the above technical solution: During the medicine tray's recovery process, the microcontroller unit triggers the drive motor to rotate the blade (food-grade rubber). The edge of the blade fits tightly against the bottom surface of the medicine tray, scraping off residual powder and sweeping it into the filling hopper, ensuring consistent dosage each time.

[0018] The microcontroller unit is the core of the control system. It links all structures according to the process of "storage-quantification-feeding-pushing-cleaning". The hopper stores the medicine, the pressure detection tablet is weighed, and the discharge baffle closes after the standard is reached. The smooth push plate feeds the medicine to the filling hopper, the push rod pushes the medicine powder into the mold, and the scraper cleans the medicine tray residue. The whole process is automated. The filling amount can be flexibly adjusted through the PLC system to adapt to the production of tablets of various specifications.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. A feeding seat for separating drug powder is set at the bottom of the hopper of the feeding mechanism, and a pressure detection plate for weighing the separated drug powder is set inside the feeding seat. The pressure detection plate can be used to quantitatively separate the drug powder according to the filling requirements, and the quantitative drug powder is filled by the smooth push plate and the filling hopper in combination with gravity. It can accurately control and adjust the filling amount of drug powder, which is convenient for filling various specifications of drugs and improves the convenience of drug powder tableting.

[0021] 2. A discharge baffle is installed at the top of the feeding seat and the bottom of the hopper to isolate the two. The discharge baffle is opened and closed according to the filling requirements and the detection data feedback of the pressure detection plate, so as to facilitate the precise filling and separation of the powder and ensure the accuracy of the powder filling. A push rod and scraper are installed at the corresponding position of the filling hopper to assist the powder filling and ensure the stability of the filling.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model;

[0026] Figure 3 This is a cross-sectional structural diagram of the feeding seat according to an embodiment of the present utility model;

[0027] Figure 4 This is a cross-sectional structural diagram of the push rod according to an embodiment of the present utility model;

[0028] Among them: 1-hopper, 2-feeding seat, 3-pressure detection plate, 31-pressure sensor, 32-load plate, 4-discharge baffle, 41-electric telescopic rod, 42-isolation plate, 5-smooth push plate, 51-pneumatic telescopic rod, 52-scraper seat, 6-filling hopper, 7-push rod, 71-electric push rod, 72-medicine tray, 8-scraper, 81-drive motor, 82-blade, 9-fixed bracket. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0030] like Figure 1-4As shown, an embodiment of the present invention provides a powder tableting and filling mechanism, including a hopper 1 installed on a tablet press. A feeding seat 2 for controlling the filling of powder is located at the bottom of the hopper 1. A pressure detection plate 3 for weighing the powder is located inside the feeding seat 2. The pressure detection plate 3 is signal-connected to a microcontroller unit for signal processing and automated control, wherein the microcontroller unit is controlled by a PLC system. The microcontroller unit is signal-connected to a discharge baffle 4 for isolating the powder. A smooth pusher plate 5 for pushing and cleaning the powder is located on one side of the discharge baffle 4. A filling hopper 6 for discharging powder is located on one side of the smooth pusher plate 5. A pusher rod 7 for cleaning the interior of the filling hopper 6 is located above the filling hopper 6. A scraper 8 for scraping the bottom of the pusher rod 7 is fixedly installed at the bottom of the pusher rod 7.

[0031] Preferably, the top of the hopper 1 is provided with a fixed bracket 9 to support it, the inside of the hopper 1 is provided with a medicine storage chamber for storing medicine powder, the top of the medicine storage chamber is provided with a sealing plug that engages and seals with the hopper 1, and the top of one end of the feeding seat 2 is provided with a support sleeve that accommodates the push rod 7 and is located on one side of the hopper 1.

[0032] The above technical solution is adopted: the hopper 1 (made of stainless steel) is fixed to the tablet press frame by the fixed bracket 9 (welded angle steel). The internal drug storage chamber (polished inner wall) stores the drug powder to avoid clumping and blockage. The top sealing plug (silicone sealing ring) locks the hopper to achieve a seal and prevent the drug powder from getting damp or contaminated. The support sleeve at one end of the feeding seat 2 (the inner diameter matches the push rod 7) guides the push rod to ensure its vertical lifting and lowering and avoids the drug powder being pushed off course.

[0033] Preferably, in any of the above schemes, the pressure detection plate 3 includes a pressure sensor 31 connected to the microcontroller unit and a load plate 32 that carries the powder. The pressure sensor 31 is fixedly installed inside the feeding base 2, and the detection end of the pressure sensor 31 is fixedly installed with the load plate 32 located inside the feeding base 2.

[0034] The above technical solution is adopted: the load plate 32 (food grade stainless steel) receives the medicine powder falling from the hopper, and its bottom surface is rigidly connected to the detection end of the pressure sensor 31 to convert the gravity of the medicine powder into an electrical signal. The signal is processed by the micro-control unit to display the weight of the medicine powder in real time. When the set value is reached (which can be adjusted by the PLC system), the micro-control unit triggers the discharge baffle 4 to close, thereby realizing the quantitative separation of the medicine powder.

[0035] Preferably, the discharge baffle 4 includes an electric telescopic rod 41 connected to the microcontroller unit and an isolation plate 42 that blocks and seals the hopper 1. The electric telescopic rod 41 is fixedly installed inside the feeding seat 2, and an isolation plate 42 that moves inside the feeding seat 2 is fixedly installed at one end of the electric telescopic rod 41. The isolation plate 42 is attached to the bottom surface of the hopper 1.

[0036] Using the above technical solution: the microcontroller unit controls the extension and retraction of the electric telescopic rod 41 according to the signal of the pressure detection plate 3. In the initial state, the isolation plate 42 (made of polytetrafluoroethylene) is detached from the bottom surface of the hopper 1, and the powder falls freely. When the weight of the powder reaches the standard, the telescopic rod pushes the isolation plate to fit against the bottom surface of the hopper, blocking the feeding channel and ensuring accurate quantitative measurement.

[0037] Preferably, the smooth push plate 5 includes a pneumatic telescopic rod 51 connected to the microcontroller unit and a scraper seat 52 for pushing the powder. The pneumatic telescopic rod 51 is fixedly installed at one end of the feeding seat 2. The scraper seat 52, which moves inside the feeding seat 2, is fixedly installed at one end of the pneumatic telescopic rod 51. The bottom surface of the scraper seat 52 is in contact with the top surface of the load plate 32. The filling hopper 6 is fixedly connected to the bottom of one end of the feeding seat 2. The filling hopper 6 is located on one side of the pressure detection plate 3 and is coaxially distributed with the support sleeve.

[0038] Using the above technical solution: After the powder is quantified, the micro-control unit starts the pneumatic telescopic rod 51, which drives the scraper seat 52 (made of polyoxymethylene, with its bottom surface in contact with the load plate 32) to slide along the load plate, pushing the powder to the filling hopper 6 (conical structure with smooth inner wall). The filling hopper is coaxial with the support sleeve, guiding the powder to fall vertically into the mold and preventing it from scattering.

[0039] Preferably, in any of the above embodiments, the push rod 7 includes an electric push rod 71 connected to the microcontroller unit and a medicine tray 72 that pushes the medicine powder inside the filling hopper 6. The electric push rod 71 is fixedly installed on the top of the support sleeve, and the output end of the electric push rod 71 is fixedly installed with the medicine tray 72 that moves inside the support sleeve.

[0040] The above technical solution is adopted: the electric push rod 71 (servo drive) is controlled by the micro-control unit, which drives the medicine tray 72 (diameter matched with the filling hopper) to descend along the support sleeve, pressing the medicine powder in the filling hopper into the mold hole. The pushing depth can be preset by the PLC system to adapt to tablets of different thicknesses. After pushing is completed, the medicine tray quickly rises to avoid medicine powder residue.

[0041] Preferably, in any of the above embodiments, the scraper 8 includes a drive motor 81 connected to the microcontroller unit and a blade 82 for cleaning the surface of the medicine tray 72. The drive motor 81 is fixedly installed inside the medicine tray 72, and the output end of the drive motor 81 is fixedly installed with the blade 82 that is in contact with the bottom surface of the medicine tray 72.

[0042] Using the above technical solution: During the recovery process of the medicine tray 72, the micro-control unit triggers the drive motor 81 to drive the blade 82 (food-grade rubber) to rotate. The edge of the blade is in close contact with the bottom surface of the medicine tray to scrape off the residual powder and sweep it into the filling hopper 6, ensuring that the dosage is consistent each time.

[0043] The working principle of the pharmaceutical powder tableting and filling mechanism of this utility model is as follows:

[0044] The hopper 1 is fixed by the fixed bracket 9. The medicine powder in the storage chamber enters the feeding seat 2 through the bottom. The load plate 32 of the pressure detection plate 3 receives the medicine powder. The pressure sensor 31 transmits the weight signal to the microcontroller unit. When the set weight is reached, the microcontroller unit controls the electric telescopic rod 41 of the feeding baffle 4 to push the isolation plate 42 to close the bottom of the hopper. Then, the pneumatic telescopic rod 51 of the smooth push plate 5 drives the scraper seat 52 to push the medicine powder to the filling hopper 6. The electric push rod 71 of the push rod 7 drives the medicine tray 72 to push the medicine powder in the filling hopper into the mold. The drive motor 81 of the scraper 8 drives the blade 82 to scrape off the medicine powder remaining in the medicine tray.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. A feeding seat 2 for separating and feeding drug powder is set at the bottom of the hopper 1 of the feeding mechanism. A pressure detection plate 3 for weighing the separated drug powder is set inside the feeding seat 2. The pressure detection plate 3 can be used to quantitatively separate the drug powder according to the filling requirements. The quantitative drug powder is then filled by the smooth push plate 5 and the filling hopper 6 in combination with gravity. This allows for precise control and adjustment of the amount of drug powder filled, which is convenient for filling various specifications of drugs and improves the convenience of drug powder tableting.

[0047] 2. A discharge baffle 4 is installed at the top of the feeding seat 2 and the bottom of the hopper 1 to isolate the two. The discharge baffle 4 is opened and closed according to the filling requirements and the detection data feedback of the pressure detection plate 3, so as to facilitate the precise filling and separation of the medicine powder and ensure the accuracy of the medicine powder filling. A push rod 7 and scraper 8 are installed at the corresponding position of the filling hopper 6 to push the medicine powder and assist the medicine powder filling, ensuring the stability of the filling.

Claims

1. A pharmaceutical powder tableting and filling mechanism, comprising a hopper (1) installed on a tablet press, wherein a feeding seat (2) for controlling the filling of pharmaceutical powder is provided at the bottom of the hopper (1), characterized in that: The feeding seat (2) is equipped with a pressure detection plate (3) for weighing the powder. The pressure detection plate (3) is connected to a microcontroller unit for signal processing and automatic control. The microcontroller unit is connected to a discharge baffle (4) driven by an electronic control system and used to isolate the powder. A smooth pusher plate (5) driven by a pneumatic system and used to push and clean the powder is provided on one side of the discharge baffle (4). A filling hopper (6) for discharging the powder is provided on one side of the smooth pusher plate (5). A pusher rod (7) driven by an electronic control system and used to clean the inside of the filling hopper (6) is provided above the filling hopper (6). A scraper (8) driven by a motor and used to scrape the bottom of the pusher rod (7) is fixedly installed at the bottom.

2. The pharmaceutical powder tableting and filling mechanism as described in claim 1, characterized in that: The top of the hopper (1) is provided with a fixed bracket (9) to support it. The inside of the hopper (1) is provided with a medicine storage chamber for storing medicine powder. A sealing plug that engages and seals with the hopper (1) is provided above the medicine storage chamber. A support sleeve that accommodates the push rod (7) and is located on one side of the hopper (1) is provided at the top of one end of the feeding seat (2).

3. The pharmaceutical powder tableting and filling mechanism as described in claim 2, characterized in that: The pressure detection plate (3) includes a pressure sensor (31) connected to the microcontroller unit and a load plate (32) that carries the powder. The pressure sensor (31) is fixedly installed inside the feeding seat (2), and the detection end of the pressure sensor (31) is fixedly installed with the load plate (32) located inside the feeding seat (2).

4. The powder tableting and filling mechanism as described in claim 3, characterized in that: The discharge baffle (4) includes an electric telescopic rod (41) connected to the microcontroller unit and an isolation plate (42) that blocks and seals the hopper (1). The electric telescopic rod (41) is fixedly installed inside the feeding seat (2). One end of the electric telescopic rod (41) is fixedly installed with an isolation plate (42) that moves inside the feeding seat (2). The isolation plate (42) is attached to the bottom surface of the hopper (1).

5. The tableting and filling mechanism for pharmaceutical powder as described in claim 4, characterized in that: The smooth push plate (5) includes a pneumatic telescopic rod (51) connected to the microcontroller unit and a scraper seat (52) for pushing the powder. The pneumatic telescopic rod (51) is fixedly installed at one end of the feeding seat (2). The scraper seat (52) that moves inside the feeding seat (2) is fixedly installed at one end of the pneumatic telescopic rod (51). The bottom surface of the scraper seat (52) is in contact with the top surface of the load plate (32). The filling hopper (6) is fixedly connected to the bottom of one end of the feeding seat (2). The filling hopper (6) is located on one side of the pressure detection plate (3) and is coaxially distributed with the support sleeve.

6. The pharmaceutical powder tableting and filling mechanism as described in claim 5, characterized in that: The push rod (7) includes an electric push rod (71) connected to the microcontroller unit and a medicine tray (72) that pushes the powder inside the filling hopper (6). The electric push rod (71) is fixedly installed on the top of the support sleeve, and the output end of the electric push rod (71) is fixedly installed with a medicine tray (72) that moves inside the support sleeve.

7. A pharmaceutical powder tableting and filling mechanism as described in claim 6, characterized in that: The scraper (8) includes a drive motor (81) connected to the microcontroller unit and a blade (82) for cleaning the surface of the medicine tray (72). The drive motor (81) is fixedly installed inside the medicine tray (72), and the output end of the drive motor (81) is fixedly installed with a blade (82) that fits against the bottom surface of the medicine tray (72).

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