A pill filling device

Abstract

The application discloses a pill filling device and relates to the field of pill medicine filling equipment.The pill filling device comprises a driving system, a metering assembly, a stock bin assembly and a brush assembly.The driving system is connected with the metering plate through a motor, a crank and a connecting rod linkage, and drives the metering plate to reciprocate along the inclined guide rail mounting plate.A through-slot type metering groove is arranged in the metering plate, an adjustable metering block in the groove is matched with a metering adjustment motor through an adjusting shaft to realize accurate metering, and the metering plate is matched with a cylinder to realize anti-blocking vibration.The stock bin main body is fixed, the bottom inclined opening is matched with the metering plate, and the distance between the stock bin baffles is adjustable.A flexible brush assembly is used to replace a rigid scraper to clean the excess pills, accurate metering and stable loading and unloading of the pills are realized, the probability of pill breakage is effectively reduced, the pill filling device is suitable for pills of different specifications, and the pill filling device can realize large-scale continuous filling and meet the high-quality production requirements of the pills, and the technical problems that the pills are easily crushed, the metering accuracy is insufficient, the adaptability is poor and it is difficult to meet the large-scale high-quality production in the existing pill filling device are solved.

Description

Technical Field

[0001] This invention relates to the field of filling equipment for pill medicines, and more particularly to a pill filling device. Background Technology

[0002] Currently, the two most common pill filling technologies are counting and measuring cup filling. Counting filling can accurately control the number of pills in each unit container, so it is mainly used for pill products that are measured by the number of pills. Measuring cup filling does not require controlling the number of pills, but uses the weight of the pills in a unit container as the measurement standard. It is mainly used for pill products that are measured by weight. The working principles of the two filling methods are similar. Both methods involve driving the hopper to move back and forth to fill the pre-filled container with pills, then using a scraper to remove excess pill material from the container opening, and finally filling the qualified pills into packaging containers (such as packaging bags) to complete the subsequent sealing process.

[0003] However, existing pill filling equipment still has obvious defects in actual operation. Specifically, the hopper and metering plate of the existing filling equipment adopt a vertical feeding structure. During operation, the hopper needs to be driven to move back and forth in the front and back direction to realize the filling action. Since there is an unavoidable assembly gap between the metering plate and the hopper, the pills are easily squeezed by the gap during the filling process, which leads to the risk of breakage. At the same time, in order to scrape off the excess pills in the hopper and metering plate, stainless steel scrapers are installed on both sides of the hopper. These scrapers come into direct contact with the pills during operation, further increasing the probability of pill breakage and affecting the appearance quality and efficacy stability of the pill products. It is difficult to meet the needs of large-scale and high-quality pill production. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a pill filling device that solves the problem of pills being crushed by compression during the filling process.

[0005] The technical solution of the present invention is as follows: it includes a drive system, a metering component, a hopper component, and a brush component. The drive system consists of a motor and a crank located at the output end of the motor. A connecting rod is provided at the end of the crank, which connects to the metering component. The metering component consists of a guide rail mounting plate and a metering plate slidably mounted on the guide rail mounting plate. The guide rail mounting plate is inclined upward at the right end. A metering groove is opened in the metering plate. A lower scraper is provided at the upper part of the guide rail mounting plate to close the lower end of the metering groove. A metering block is slidably installed inside the metering groove. An adjustment shaft is connected to the left end of the metering block. A metering adjustment motor is connected to the other end of the adjustment shaft. A connecting mechanism for connecting the connecting rod is provided at the top of the metering plate. A discharge pipe is provided in the guide rail mounting plate at the end of the rightward movement path of the metering groove in the metering plate. The top of the metering groove is slidably engaged with the hopper component. The hopper assembly consists of a hopper body and a hopper baffle. The bottom of the hopper body is provided with an inclined neck-shaped part, and the neck-shaped part has an inclined opening adapted to the metering plate. The metering plate can block the opening of the hopper body. The hopper baffle is set at the opening, and there is an adjustable gap between the bottom and the hopper body. The brush assembly consists of a hexagonal rotating shaft and a scraper drive motor that drives the rotating shaft to rotate. The rotating shaft surface is evenly spaced with brushes distributed along the length of the rotating shaft.

[0006] Furthermore, the adjusting shaft is a rod-shaped mechanism with threads on its surface. A gear telescopic mechanism meshes with the metering adjusting motor and the adjusting shaft. The gear telescopic mechanism has a threaded gear that meshes with the adjusting shaft. The threaded gear and the adjusting shaft together form a worm gear mechanism. Thus, by rotating the metering adjusting motor forward and backward, and starting and stopping it, the adjusting shaft drives the metering block to move. The output mode of the metering adjusting motor is changed by the gear telescopic mechanism, thereby making the extension and retraction of the adjusting shaft more precise and ensuring that the movement of the metering block is more precise to meet the usage requirements.

[0007] Furthermore, the metering groove is a through groove that extends along the length of the metering plate and penetrates its side wall. When the metering block moves along the side wall of the metering groove, the diameter of the through section of the metering groove can be changed. The change in the diameter of the through section can increase or decrease the capacity of the metering groove, and the change in capacity directly changes the amount of pills dispensed.

[0008] Furthermore, the lower scraper is detachably mounted on the surface of the guide rail mounting plate by several bolts. The installation gap between the lower scraper and the metering plate can be adjusted by the bolts. The installation gap can be adjusted according to actual usage requirements, thereby avoiding excessive friction contact or pills entering the gap.

[0009] Furthermore, the metering plate reciprocates along the guide rail mounting plate under the drive of the connecting rod. During the reciprocating motion, when the metering plate moves to the left side (recycling side), the bottom of the metering groove on the surface of the metering plate is closed by the lower scraper, and the top is connected to the main body of the hopper; when the metering plate moves to the right side (pushing side), the bottom of the metering groove is connected to the feeding pipe, and the metering plate passes through the brush assembly during the movement.

[0010] Furthermore, the hopper baffle is vertically inserted into the hopper body from top to bottom, with a gap between the bottom of the hopper baffle and the inner wall of the hopper body. The part of the hopper baffle located outside the hopper body is equipped with adjusting bolts and a baffle. The hopper baffle can change its fixed position in the vertical direction by adjusting the bolts and the baffle, thereby adjusting the distance between the bottom of the hopper baffle and the hopper body. The distance between the hopper baffle and the hopper body determines the throughput of the pills, which can be adjusted arbitrarily by the user according to actual needs.

[0011] Furthermore, each end of the rotating shaft is provided with a connecting seat, one of which is connected to the scraper drive motor. Each face of the hexagonal rotating shaft is provided with a brush, each brush is composed of flexible bristles, and the ends of the brush bristles abut against the upper surface of the metering plate.

[0012] Furthermore, the metering plate has a rod extending along its length at the right end, and a cylinder is provided on the top side of the end of the guide rail mounting plate. The output end of the cylinder abuts against the rod. The cylinder adopts an adjustable telescopic output method. By repeatedly telescopically striking the rod at a certain frequency, the metering plate is vibrated, which prevents the pills from being blocked in the metering plate due to their own material characteristics or special circumstances. By striking the rod to drive the metering plate to vibrate, the pills can be actively expelled.

[0013] The beneficial effects of this invention are as follows: 1. This invention features an upward-sloping guide rail mounting plate on the right end, which slides in conjunction with the inclined neck-shaped opening at the bottom of the hopper body and the metering plate. This eliminates the need for reciprocating movement of the hopper, reducing the pressure on the pills caused by the assembly gap between the metering plate and the hopper. Simultaneously, a brush assembly with flexible brushes replaces the traditional stainless steel scraper. The scraper drives a motor to rotate a hexagonal shaft, using the brushes to remove excess pills from the metering plate. This avoids direct friction between the scraper and the pills, structurally reducing the risk of pill breakage and ensuring the integrity of the pills' appearance and the stability of their efficacy.

[0014] 2. This invention uses a metering block that slides within the metering tank. The metering block is connected to a metering adjustment motor via an adjustment shaft. The adjustment shaft and the metering adjustment motor are connected by a gear telescopic mechanism to form a worm gear mechanism. The position of the metering block can be precisely adjusted by rotating the metering adjustment motor in both directions, thereby changing the diameter of the metering tank and achieving precise control of the filling dosage. At the same time, the lower scraper is detachable via bolts and the installation gap can be adjusted to further ensure no leakage of the pills during the metering process and improve metering consistency.

[0015] 3. This invention uses a drive system consisting of a motor, crank, and connecting rod to stably drive the metering plate to reciprocate along the guide rail mounting plate. The inclined structure of the guide rail mounting plate assists in the feeding of the pills, preventing blockage. A rod is set at the right end of the metering plate to cooperate with an adjustable telescopic cylinder. The repeated extension and retraction of the cylinder vibrates the metering plate, ensuring that the pills are filled evenly in the metering tank. The components are structurally compatible and move in synergy, enabling continuous cyclic operation of "loading-cleaning-feeding", meeting the needs of large-scale, high-quality pill production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the drive system of the present invention.

[0018] Figure 3 This is a schematic diagram of the metering component of the present invention.

[0019] Figure 4 This is a schematic diagram of the hopper assembly of the present invention.

[0020] Figure 5 This is a schematic diagram of the brush assembly of the present invention.

[0021] Reference numerals: 1. Drive system; 11. Motor; 12. Crank; 13. Connecting rod; 2. Metering assembly; 21. Guide rail mounting plate; 22. Metering plate; 23. Metering groove; 24. Lower scraper; 25. Adjusting shaft; 26. Metering adjustment motor; 27. Feed pipe; 28. Metering block; 3. Hopper assembly; 31. Hopper body; 32. Hopper baffle; 4. Brush assembly; 41. Rotating shaft; 42. Scraper drive motor; 43. Brush. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] like Figure 1-5 As shown, a pill filling device includes a drive system 1, a metering component 2, a hopper component 3, and a brush component 4. The drive system 1 consists of a motor 11 and a crank 12 disposed at the output end of the motor 11. A connecting rod 13 is provided at the end of the crank 12, and the metering component 2 is connected through the connecting rod 13. The metering component 2 consists of a guide rail mounting plate 21 and a metering plate 22 slidably mounted on the guide rail mounting plate 21. The guide rail mounting plate 21 is inclined upward at the right end. A metering groove 23 is provided in the metering plate 22. The metering groove 23 is a through groove that extends along the length of the metering plate 22 and penetrates its side wall. When the metering block 28 moves along the side wall of the metering groove 23, it can change the diameter of the through part of the metering groove 23. The change in the diameter of the through part can increase or decrease the capacity of the metering groove 23. The change in capacity directly changes the amount of pills dispensed. A rod extending along its length is provided at the right end of the metering plate 22. A cylinder is provided on one side of the top of the end of the guide rail mounting plate 21. The output end of the cylinder abuts against the rod. The cylinder adopts an adjustable telescopic output method. By repeatedly telescopically striking the rod at a certain frequency, the metering plate 22 is vibrated, which prevents the pills from being blocked in the metering plate 22 due to their own material characteristics or special circumstances. By striking the rod to drive the metering plate 22 to vibrate, the pills can be actively discharged. The upper part of the guide rail mounting plate 21 is provided with a lower scraper 24 at the lower end of the closed metering groove 23. The lower scraper 24 is detachably mounted on the surface of the guide rail mounting plate 21 by several bolts. At the same time, the installation gap between the lower scraper 24 and the metering plate 22 can be adjusted by bolts. The installation gap can be adjusted according to actual use needs, thereby avoiding excessive friction contact or pellets entering the gap. The metering plate 22 reciprocates along the guide rail mounting plate 21 under the drive of the connecting rod 13. During the reciprocating motion, when the metering plate 22 moves to the left recycling side, the bottom of the metering groove 23 on the surface of the metering plate 22 is closed by the lower scraper 24, and the top is connected to the hopper body 31. When the metering plate 22 moves to the right ejection side, the bottom of the metering groove 23 is connected to the discharge pipe 27, and the metering plate 22 passes through the brush assembly 4 during the movement. Metering block 28 is slidably installed inside metering groove 23. The left end of metering block 28 is connected to adjustment shaft 25, and the other end of adjustment shaft 25 is connected to metering adjustment motor 26. The top of metering plate 22 is provided with a connecting mechanism for connecting rod 13. The guide rail mounting plate 21 is provided with a discharge pipe 27 at the end of the rightward movement path of metering groove 23 in metering plate 22. Adjustment shaft 25 is a rod-shaped mechanism with thread on its surface. A gear telescopic mechanism is meshed between metering adjustment motor 26 and adjustment shaft 25. The gear telescopic mechanism is provided with a threaded gear that meshes with adjustment shaft 25. The threaded gear and adjustment shaft 25 are combined to form a worm gear mechanism. Thus, by the forward and reverse rotation and start and stop of metering adjustment motor 26, adjustment shaft 25 drives metering block 28 to move. The output mode of metering adjustment motor 26 is changed by gear telescopic mechanism to make the extension and retraction of adjustment shaft 25 more precise and ensure that the movement of metering block 28 is more precise to meet the use requirements. The top of metering groove 23 is slidably fitted with hopper assembly 3. The hopper assembly 3 consists of a hopper body 31 and a hopper baffle 32. The hopper baffle 32 is vertically inserted into the hopper body 31 from top to bottom. There is a gap between the bottom of the hopper baffle 32 and the inner wall of the hopper body 31. The part of the hopper baffle 32 located outside the hopper body 31 is provided with adjusting bolts and a baffle. The hopper baffle 32 can change its fixed position in the vertical direction by adjusting the bolts and the baffle, thereby adjusting the distance between the bottom of the hopper baffle 32 and the hopper body 31. The distance between the hopper baffle 32 and the hopper body 31 determines the amount of pills that can be passed through. Users can adjust it arbitrarily according to actual needs. The bottom of the hopper body 31 is provided with an inclined neck-shaped part. The neck-shaped part has an inclined opening that matches the metering plate 22. The metering plate 22 can seal the opening of the hopper body 31. The hopper baffle 32 is set at the opening, and there is an adjustable gap between the bottom of the baffle and the hopper body 31. The brush assembly 4 consists of a hexagonal rotating shaft 41 and a scraper drive motor 42 that drives the rotating shaft 41 to rotate. The rotating shaft 41 is evenly spaced with brushes 43 distributed along the length of the rotating shaft 41. The two ends of the rotating shaft 41 are respectively provided with connecting seats. One of the connecting seats is connected to the scraper drive motor 42. Each surface of the hexagonal rotating shaft 41 is provided with brushes 43. Each brush 43 is composed of flexible bristles, and the ends of the bristles of the brush 43 abut against the upper surface of the metering plate 22.

[0024] Working principle of this invention: 1. First, according to the required pill specifications, the metering adjustment motor 26 drives the adjustment shaft 25. The gear telescopic mechanism and worm gear mechanism between the adjustment shaft 25 and the metering adjustment motor 26 drive the metering block 28 in the metering groove 23 to slide, adjust the diameter of the through part of the metering groove 23, and preset the precise filling dosage. At the same time, the installation gap between the lower scraper 24 and the metering plate 22 is adjusted by bolts, and the distance between the bottom of the hopper baffle 32 and the hopper body 31 is adjusted to ensure that it matches the pill size. Then, the pills to be filled are loaded into the hopper body 31 of the hopper assembly 3.

[0025] 2. Start the motor 11 of the drive system 1. The output end of the motor 11 drives the crank 12 to rotate. The crank 12 drives the metering plate 22 of the metering component 2 to reciprocate along the guide rail mounting plate 21 through the connecting rod 13 at the end. At the same time, start the scraper drive motor 42 of the brush component 4 to drive the hexagonal rotating shaft 41 to rotate. The brush 43 on the surface of the rotating shaft 41 rotates synchronously to prepare for cleaning.

[0026] 3. When the metering plate 22 moves to the left recovery side under the drive of the connecting rod 13, the bottom of the metering groove 23 on the metering plate 22 is closed by the lower scraper 24 on the guide rail mounting plate 21. The top of the metering groove 23 is connected to the inclined neck-shaped opening at the bottom of the hopper body 31. The pellets in the hopper body 31 fall into the metering groove 23 through the gap at the bottom of the hopper baffle 32, completing a single loading.

[0027] 4. After the filling is completed, the metering plate 22 moves to the right under the drive of the connecting rod 13. During the movement, the rotating brush 43 continuously abuts against the upper surface of the metering plate 22 to scrape off the excess pills on the edge of the metering plate 22 and the metering groove 23. At the same time, the cylinder at the top of the end of the guide rail mounting plate 21 repeatedly extends and retracts to strike the rod at the right end of the metering plate 22, causing the metering plate 22 to vibrate, ensuring that the pills in the metering groove 23 are filled evenly and without sticking.

[0028] 5. When the metering plate 22 moves to the right end, the bottom of the metering tank 23 is connected to the pre-set feeding pipe 27 in the guide rail mounting plate 21. The pre-set dose of pills in the metering tank 23 falls into the outer packaging container through the feeding pipe 27 under the action of gravity and the vibration of the metering plate 22, completing a single filling operation.

[0029] 6. Driven by the connecting rod 13, the metering plate 22 moves to the left again, repeating the above loading, cleaning and unloading steps. All structures work together to achieve large-scale continuous filling of pills.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pill filling device, comprising a drive system (1), a metering component (2), a hopper component (3), and a brush component (4), characterized in that: The drive system (1) consists of a motor (11) and a crank (12) located at the output end of the motor (11). A connecting rod (13) is provided at the end of the crank (12), and the metering component (2) is connected through the connecting rod (13). The metering component (2) consists of a guide rail mounting plate (21) and a metering plate (22) slidably mounted on the guide rail mounting plate (21). The guide rail mounting plate (21) is inclined with the right end upward. A metering groove (23) is provided in the metering plate (22). A lower scraper (24) is provided on the upper part of the guide rail mounting plate (21) to close the lower end of the metering groove (23). A metering block (28) is slidably mounted inside the metering groove (23). An adjustment shaft (25) is connected to the left end of the metering block (28). A metering adjustment motor (26) is connected to the other end of the adjustment shaft (25). A connecting mechanism for connecting the connecting rod (13) is provided on the top of the metering plate (22). A discharge pipe (27) is provided at the end of the rightward movement path of the metering groove (23) in the metering plate (22) in the guide rail mounting plate (21). The top of the metering groove (23) is slidably engaged with the hopper component (3). The hopper assembly (3) consists of a hopper body (31) and a hopper baffle (32). The bottom of the hopper body (31) is provided with an inclined neck-shaped part. The neck-shaped part has an inclined opening that is adapted to the metering plate (22). The metering plate (22) can block the opening of the hopper body (31). The hopper baffle (32) is set at the opening and has an adjustable gap between its bottom and the hopper body (31). The brush assembly (4) consists of a hexagonal rotating shaft (41) and a scraper drive motor (42) that drives the rotating shaft (41) to rotate. The rotating shaft (41) is provided with brushes (43) evenly spaced along the length of the rotating shaft (41).

2. The pill filling device according to claim 1, characterized in that: The adjustment shaft (25) is a rod-shaped mechanism with threads on its surface. A gear telescopic mechanism is meshed between the metering adjustment motor (26) and the adjustment shaft (25). The gear telescopic mechanism is equipped with a threaded gear that meshes with the adjustment shaft (25). The threaded gear and the adjustment shaft (25) together form a worm gear mechanism. Thus, by rotating the metering adjustment motor (26) forward and backward, and starting and stopping, the adjustment shaft (25) drives the metering block (28) to move.

3. The pill filling device according to claim 2, characterized in that: The metering groove (23) is a through groove that extends along the length of the metering plate (22) and penetrates its side wall. When the metering block (28) moves along the side wall of the metering groove (23), the diameter of the through part of the metering groove (23) can be changed.

4. The pill filling device according to claim 1, characterized in that: The lower scraper (24) is detachably mounted on the surface of the guide rail mounting plate (21) by several bolts, and the installation gap between the lower scraper (24) and the metering plate (22) can be adjusted by the bolts.

5. The pill filling device according to claim 1, characterized in that: The metering plate (22) reciprocates along the guide rail mounting plate (21) under the drive of the connecting rod (13). During the reciprocating motion, when the metering plate (22) moves to the left side (recycling side), the bottom of the metering groove (23) on the surface of the metering plate (22) is closed by the lower scraper (24), and the top is connected to the hopper body (31). When the metering plate (22) moves to the right side (pushing side), the bottom of the metering groove (23) is connected to the discharge pipe (27), and the metering plate (22) passes through the brush assembly (4) during the movement.

6. The pill filling device according to claim 1, characterized in that: The hopper baffle (32) is inserted vertically into the hopper body (31) from top to bottom. There is a gap between the bottom of the hopper baffle (32) and the inner wall of the hopper body (31). The part of the hopper baffle (32) located outside the hopper body (31) is provided with adjusting bolts and baffles. The hopper baffle (32) can change its fixed position in the vertical direction by adjusting the bolts and baffles, thereby adjusting the distance between the bottom of the hopper baffle (32) and the hopper body (31).

7. The pill filling device according to claim 1, characterized in that: The two ends of the rotating shaft (41) are respectively provided with connecting seats. One of the connecting seats is connected to the scraper drive motor (42). Each face of the hexagonal rotating shaft (41) is provided with a brush (43). Each brush (43) is composed of flexible bristles, and the ends of the bristles of the brush (43) abut against the upper surface of the metering plate (22).

8. A pill filling device according to claim 1, characterized in that: The metering plate (22) has a rod extending along its length at the right end. A cylinder is provided on one side of the top end of the guide rail mounting plate (21). The output end of the cylinder abuts against the rod. The cylinder adopts an adjustable telescopic output mode. By repeatedly telescopically striking the rod at a certain frequency, the metering plate (22) vibrates.

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