A screening and sub-packaging mechanism of a medicine weighing device

Abstract

This utility model relates to the technical field of pharmaceutical production equipment, and discloses a screening and dispensing mechanism for a pharmaceutical weighing device. It includes a feeding hopper, an outer shell fixedly connected to the outer wall of the feeding hopper, a control panel fixedly connected to the outer wall of the outer shell, and a screening component disposed below the feeding hopper. The screening component includes a dispensing slide, and two screening hoppers are disposed below the feeding hopper. Baffles are fixedly connected to the inner walls of both screening hoppers, and discharge cylinders are fixedly connected to the outer walls of both screening hoppers. Cylinders are fixedly connected to the outer walls of both discharge cylinders, and pressure valve plates are fixedly connected to the output ends of the cylinders. The discharge cylinders are disposed inside the discharge hoppers, and the lower surface of the discharge hoppers is slidably connected to the upper surface of the dispensing slide. In this utility model, by setting two screening hoppers and discharge cylinders in cooperation, and using cylinders to drive pressure valve plates, directional material discharge is achieved. The discharge hoppers can move left and right along the dispensing slide under the drive of an electric actuator, realizing automatic switching of the discharge path.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical production equipment technology, and in particular to a screening and dispensing mechanism for a pharmaceutical weighing device. Background Technology

[0002] With the increasing demands for intelligence and precision in the pharmaceutical manufacturing industry, the accuracy and efficiency of drug weighing and dispensing are receiving more and more attention. Traditional manual dispensing methods are no longer sufficient to meet the needs of large-scale, high-precision drug production. In particular, ensuring the accurate delivery of weighed and qualified drugs, improving screening efficiency, and reducing manual intervention during the dispensing process after drug weighing have become problems that must be solved in automated pharmaceutical production lines.

[0003] Existing pharmaceutical weighing devices typically include a feeding mechanism, a weighing unit, and a dispensing and packaging assembly. The pharmaceutical product enters the weighing container from the loading container, with the feeding rate controlled by gravity or a screw conveyor. Once the set weighing value is reached, the control system activates the dispensing mechanism to complete the packaging. Some systems also integrate a vibrating feeder or a simple screening structure for roughly distinguishing different particle sizes or removing impurities. These devices have achieved a certain level of automation in basic weighing and quantitative dispensing, meeting the initial needs of ordinary pharmaceutical packaging.

[0004] However, in existing technologies, most weighing devices lack automatic screening and sorting capabilities, especially the ability to dynamically adjust the material guiding path based on weighing results. This often results in the inability to accurately distinguish between qualified and unqualified materials in real time during the packaging process, leading to mixed packaging problems. This not only affects the consistency of drug quality but also increases the workload of subsequent screening and manual intervention. Furthermore, the inability to automatically guide materials to the appropriate containers based on real-time weighing data limits the system's intelligence level and severely restricts the improvement of packaging efficiency. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a screening and dispensing mechanism for a drug weighing device, which aims to improve the existing structure's lack of automatic sorting function and dynamic adjustment of the guide path based on the weighing results, resulting in mixed loading of qualified and unqualified drugs, low dispensing efficiency, and high dependence on manual screening.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screening and dispensing mechanism for a drug weighing device, comprising a feeding hopper, an outer shell fixedly connected to the outer wall of the feeding hopper, a control panel fixedly connected to the outer wall of the outer shell, and a screening component disposed below the feeding hopper;

[0007] The screening assembly includes a material distribution chute. Two screening hoppers are arranged below the feed hopper. Baffles are fixedly connected to the inner walls of the two screening hoppers. Feed cylinders are fixedly connected to the outer walls of the two screening hoppers. Cylinders are fixedly connected to the outer walls of the two feed cylinders. A pressure valve plate is fixedly connected to the output end of the cylinder. The feed cylinder is located inside the feed hopper. The lower surface of the feed hopper is slidably connected to the upper surface of the material distribution chute. A fixing plate is fixedly connected to the lower surface of the feed hopper. An electric actuator is fixedly connected to the lower surface of the fixing plate. The output end of the electric actuator is fixedly connected to the outer wall of the material distribution chute. A base plate is arranged below the material distribution chute. A discharge box is fixedly connected to the upper surface of the base plate.

[0008] Furthermore, a connecting block is fixedly connected to the upper surface of the first fixed plate, a connecting plate is fixedly connected to the upper surface of the connecting block, a spring is fixedly connected to the upper surface of the connecting plate, a second fixed plate is fixedly connected to one end of the spring, a linear electromagnetic vibrator is fixedly connected to the upper surface of the second fixed plate, a vibrating shell is fixedly connected to the upper surface of the linear electromagnetic vibrator, and the upper surface of the vibrating shell is fixedly connected to the lower surface of the two screening hoppers.

[0009] Furthermore, the material distribution chute is located below the feed hopper, an air box is fixedly connected to the outer wall of the vibrating shell, and the lower surface of the vibrating shell is fixedly connected to the upper surface of the fixed plate.

[0010] Furthermore, a plurality of connecting posts are fixedly connected to the lower surface of the fixing plate, and one end of each connecting post is fixedly connected to the upper surface of the base plate.

[0011] Furthermore, a connecting column is fixedly connected to the upper surface of the fixing plate, and one end of the connecting column is fixedly connected to the outer wall of the hopper.

[0012] Furthermore, an air source treatment kit is fixedly connected to the upper surface of the base plate, and the vibration shell is disposed inside the outer shell.

[0013] Furthermore, a limit rod is fixedly connected to the lower surface of the fixed plate, and the vibration shell is in contact with the air box.

[0014] Furthermore, the lower surface of the cylinder is fixedly connected to the outer wall of the hopper, and the outer wall of the material distribution slide is slidably connected to the inner wall of the fixed plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by setting two screening hoppers in conjunction with the feeding cylinder, and using a cylinder to drive the pressure valve plate to achieve directional material feeding, the feeding hopper can move left and right along the material distribution slide under the drive of the electric push rod, realizing automatic switching of the feeding path. Combined with the judgment of the weighing results on the control panel, it realizes the sorting and feeding of qualified and unqualified medicines, significantly improving the dispensing efficiency, reducing the degree of manual intervention, and solving the problem that the existing structure cannot dynamically guide the dispensing path according to the weighing results and is prone to mixing qualified and unqualified materials.

[0017] 2. In this utility model, the vibration mechanism, consisting of a linear electromagnetic vibrator, a spring, and a vibrating shell, is connected to the screening hopper. It can effectively transmit high-frequency vibration to the material. Through the vibration, the pharmaceutical material is continuously pushed down and evenly distributed. Combined with the baffle in the screening hopper, continuous screening is achieved, avoiding blockage and material accumulation, ensuring smooth and stable feeding, thereby improving the uniformity and accuracy of material distribution, and improving the overall screening efficiency and equipment operation reliability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the sieving and dispensing mechanism of a pharmaceutical weighing device proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the sieving hopper part of the sieving and dispensing mechanism of a medicine weighing device proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the linear electromagnetic vibrator part of the sieving and dispensing mechanism of a medicine weighing device proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the pressure valve plate part of the sieving and dispensing mechanism of a medicine weighing device proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the electric push rod part of the sieving and dispensing mechanism of a medicine weighing device proposed in this utility model.

[0023] Legend:

[0024] 1. Feed hopper; 2. Outer shell; 3. Control panel; 4. Distributor slide; 5. Base plate; 6. Air source treatment kit; 7. Air box; 8. Vibrating shell; 9. Screening hopper; 10. Cylinder; 11. Connecting column one; 12. Discharge box; 13. Fixing plate one; 14. Connecting column two; 15. Feeding cylinder; 16. Feeding hopper; 17. Connecting block; 18. Spring; 19. Linear electromagnetic vibrator; 20. Baffle; 21. Pressure valve plate; 22. Limit rod; 23. Electric push rod; 24. Connecting plate; 25. Fixing plate two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5 This utility model provides an embodiment of a material screening and dispensing mechanism for a pharmaceutical weighing device, comprising a feeding hopper 1. The feeding hopper 1 is used to receive and introduce pharmaceutical materials to be weighed and is the inlet component of the entire device. The material flows into the screening component through the feeding hopper 1, ensuring that the material can smoothly enter the subsequent dispensing process. A housing 2 is fixedly connected to the outer wall of the feeding hopper 1, and a control panel 3 is fixedly connected to the outer wall of the housing 2. The control panel 3 is installed on the outer wall of the housing 2 and is responsible for receiving and sending control signals to control the working status of the entire device, the cylinder 10, the electric push rod 23 and other actuators, so as to realize automated operation. A screening component is arranged below the feeding hopper 1.

[0027] The screening assembly includes a material distribution chute 4 and two screening hoppers 9 below the feed hopper 1. The screening hoppers 9 receive the material falling from the feed hopper 1. Each screening hopper 9 has a baffle 20 to adjust the material flow direction and speed, ensuring uniform distribution and smooth flow into the discharge cylinder 15. Combined with the vibration generated by the vibrating shell 8, this achieves effective material screening. Baffles 20 are fixedly connected to the inner walls of both screening hoppers 9, and discharge cylinders 15 are fixedly connected to the outer walls of both screening hoppers 9. Cylinders 10 are fixedly connected to the outer walls of both discharge cylinders 15. A pressure valve plate 21 is fixedly connected to the output end of each cylinder 10. The pressure valve plate 21 is opened or closed by the push rod of the cylinder 10, controlling the flow of material from the discharge cylinder 15 into the discharge hopper. The switch 16 ensures the accuracy and timeliness of the material feeding action. The feeding cylinder 15 is set inside the feeding hopper 16. The lower surface of the feeding hopper 16 is slidably connected to the upper surface of the material distribution slide 4. The lower surface of the feeding hopper 16 is fixedly connected to the fixing plate 13. The lower surface of the fixing plate 13 is fixedly connected to the electric push rod 23. The electric push rod 23 connects the fixing plate 13 and the material distribution slide 4. The electric push rod 23 drives the material distribution slide 4 to slide left and right through the motor, realizing the automatic path switching and diversion of qualified and unqualified materials, improving the dispensing efficiency and automation level. The output end of the electric push rod 23 is fixedly connected to the outer wall of the material distribution slide 4. A base plate 5 is set below the material distribution slide 4. The upper surface of the base plate 5 is fixedly connected to the discharge box 12.

[0028] Reference Figures 1-5A connecting block 17 is fixedly connected to the upper surface of the fixed plate 13, and a connecting plate 24 is fixedly connected to the upper surface of the connecting block 17. The connecting plate 24 transmits the vibration force, ensuring the continuity of the vibration structure and guaranteeing the stable transmission of the vibration force to the screening hopper 9. A spring 18 is fixedly connected to the upper surface of the connecting plate 24, and a fixed plate 25 is fixedly connected to one end of the spring 18. A linear electromagnetic vibrator 19 is fixedly connected to the upper surface of the fixed plate 25. The linear electromagnetic vibrator 19 is the key device for generating high-frequency linear vibration, driving the vibration shell 8 to vibrate, promoting the movement and screening of materials inside the screening hopper 9, and improving screening efficiency and uniformity. The vibration shell 8 is fixedly connected to the upper surface of the linear electromagnetic vibrator 19, and the upper surface of the vibration shell 8 is fixedly connected to the lower surface of the two screening hoppers 9 and the material distribution slide 4. Below the feed hopper 1, an air box 7 is fixedly connected to the outer wall of the vibrating shell 8. The lower surface of the vibrating shell 8 is fixedly connected to the upper surface of the fixing plate 13. Multiple connecting columns 14 are fixedly connected to the lower surface of the fixing plate 13. The connecting columns 14 serve as support columns for the device, enhancing the stability and load-bearing capacity of the overall structure and preventing shaking and deformation during vibration. One end of the connecting column 14 is fixedly connected to the upper surface of the bottom plate 5. A connecting column 11 is fixedly connected to the upper surface of the fixing plate 13. One end of the connecting column 11 is fixedly connected to the outer wall of the feed hopper 16. An air source treatment kit 6 is fixedly connected to the upper surface of the bottom plate 5. The vibrating shell 8 is located inside the outer shell 2. The outer shell 2 covers the main structure of the entire screening and dispensing mechanism, playing a role in protecting the internal components and preventing external pollution and mechanical damage. It also provides a fixed support for the installation of the control panel 3 and other components, a limit rod 22 is fixedly connected to the lower surface of the fixed plate 13, the vibrating shell 8 is attached to the air box 7, the lower surface of the cylinder 10 is fixedly connected to the outer wall of the feeding hopper 16, and the outer wall of the material distribution slide 4 is slidably connected to the inner wall of the fixed plate 13. The material distribution slide 4 is used to carry and guide the material after the material is dropped from the screening hopper 9. The qualified and unqualified materials are separated by its left and right sliding action. It works with the electric push rod 23 to realize the automatic sorting of materials.

[0029] Working Principle: When the screening and dispensing mechanism of a pharmaceutical weighing device is required, the pharmaceutical material first enters the screening component from the feed hopper 1. The screening component includes two screening hoppers 9, each with a baffle 20 for blocking material. Each hopper 9 is externally connected to a discharge cylinder 15. A cylinder 10 is located next to each discharge cylinder 15. The output end of the cylinder 10 is connected to a push rod assembly, which corresponds to the pressure valve plate 21. When the cylinder 10 moves downward, the push rod assembly physically presses down on the pressure valve plate 21, opening the valve plate. The material then enters the lower discharge hopper 16 from the discharge cylinder 15, completing the discharge action. After discharge, the cylinder 10 returns to its original position, providing reset space for the pressure valve plate 21. The valve plate 21 automatically closes via a torsion spring mounted on the rotating shaft, thus completing a single material feeding cycle. To achieve automatic separation of qualified and unqualified materials, the feeding hopper 16 moves the material distribution slide 4 left and right via the electric push rod 23 below it, causing the material distribution slide 4 to slide to the left or right side of the feeding hopper 16. The control module controls the electric push rod 23 to move according to the weighing result. When the material is determined to be unqualified, the material distribution slide 4 moves to the left, and the material enters the left discharge box 12; when the material is determined to be qualified, the material distribution slide 4 moves to the right and enters the right side, thus achieving automatic sorting. This solves the problem of existing equipment lacking automatic sorting and path switching functions, resulting in mixed loading of qualified and unqualified medicines, low packaging efficiency, and reliance on manual screening.

[0030] In addition, to achieve stable material conveying and uniform feeding, the device is equipped with a vibration structure driven by a linear electromagnetic vibrator 19. The vibration structure includes a fixed plate 13, a connecting block 17, a connecting plate 24, a spring 18, a fixed plate 25, and a vibrating shell 8 connected in sequence. The linear electromagnetic vibrator 19 is installed above the fixed plate 25 and drives the vibrating shell 8 to generate high-frequency vibration. The upper surface of the vibrating shell 8 is connected to the lower surface of the two screening hoppers 9. In the working state, the vibration can be transmitted to the inside of the screening hoppers 9, causing the material to produce controllable displacement. The spring 18 plays a buffering and resetting role to ensure structural stability during vibration. Through this vibration device, the material can be continuously vibrated and propelled in the screening hoppers 9, avoiding material accumulation or blockage, ensuring smooth feeding and sufficient screening, thereby improving the uniformity and accuracy of material distribution and enhancing the overall screening efficiency and stability.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sieving and dispensing mechanism for a pharmaceutical weighing device, comprising a feeding hopper (1), characterized in that: The outer wall of the feed hopper (1) is fixedly connected to the outer shell (2), the outer wall of the outer shell (2) is fixedly connected to the control panel (3), and a screening component is provided below the feed hopper (1); The screening assembly includes a material distribution chute (4), and two screening hoppers (9) are arranged below the feed hopper (1). Baffles (20) are fixedly connected to the inner walls of both screening hoppers (9), and discharge cylinders (15) are fixedly connected to the outer walls of both screening hoppers (9). Cylinders (10) are fixedly connected to the outer walls of both discharge cylinders (15), and pressure valve plates (21) are fixedly connected to the output ends of the cylinders (10). The discharge cylinders (15) are located in the feed hoppers (4). 16) Inside, the lower surface of the feeding hopper (16) is slidably connected to the upper surface of the material distribution slide (4). A fixing plate (13) is fixedly connected to the lower surface of the feeding hopper (16). An electric push rod (23) is fixedly connected to the lower surface of the fixing plate (13). The output end of the electric push rod (23) is fixedly connected to the outer wall of the material distribution slide (4). A bottom plate (5) is provided below the material distribution slide (4). A discharge box (12) is fixedly connected to the upper surface of the bottom plate (5).

2. The sieving and dispensing mechanism of a pharmaceutical weighing device according to claim 1, characterized in that: A connecting block (17) is fixedly connected to the upper surface of the first fixed plate (13). A connecting plate (24) is fixedly connected to the upper surface of the connecting block (17). A spring (18) is fixedly connected to the upper surface of the connecting plate (24). A second fixed plate (25) is fixedly connected to one end of the spring (18). A linear electromagnetic vibrator (19) is fixedly connected to the upper surface of the second fixed plate (25). A vibrating shell (8) is fixedly connected to the upper surface of the linear electromagnetic vibrator (19). The upper surface of the vibrating shell (8) is fixedly connected to the lower surface of the two screening hoppers (9).

3. The sieving and dispensing mechanism of a pharmaceutical weighing device according to claim 2, characterized in that: The material distribution chute (4) is located below the feed hopper (1), and an air box (7) is fixedly connected to the outer wall of the vibrating shell (8). The lower surface of the vibrating shell (8) is fixedly connected to the upper surface of the fixing plate (13).

4. The screening and dispensing mechanism of the medicine weighing apparatus according to claim 3, characterized in that: Multiple connecting posts (14) are fixedly connected to the lower surface of the fixing plate (13), and one end of the connecting post (14) is fixedly connected to the upper surface of the base plate (5).

5. The screening and dispensing mechanism of the medicine weighing apparatus according to claim 2, characterized in that: A connecting column (11) is fixedly connected to the upper surface of the fixing plate (13), and one end of the connecting column (11) is fixedly connected to the outer wall of the hopper (16).

6. The screening and dispensing mechanism of the medicine weighing apparatus according to claim 2, characterized in that: An air source treatment kit (6) is fixedly connected to the upper surface of the base plate (5), and the vibration shell (8) is set inside the outer shell (2).

7. The screening and dispensing mechanism of a medicine weighing apparatus according to claim 2, characterized in that: The lower surface of the fixed plate (13) is fixedly connected to the limiting rod (22), and the vibration shell (8) is in contact with the air box (7).

8. The screening and dispensing mechanism of the medicine weighing apparatus according to claim 2, characterized in that: The lower surface of the cylinder (10) is fixedly connected to the outer wall of the hopper (16), and the outer wall of the material distribution slide (4) is slidably connected to the inner wall of the fixed plate (13).

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