Automatic weighing device for medicine powder

Abstract

The utility model discloses an automatic weighing device for medicine powder, and relates to the technical field of medicine powder weighing. The device comprises a bottom plate, a rotating rod is rotatably connected to the top end of the bottom plate, a rotating disc is fixedly connected to the top end of the rotating rod, through grooves distributed in a central symmetry mode are formed in the rotating disc, and positioning cylinders are slidably clamped in the through grooves; a servo motor drives a second gear to rotate, the second gear is connected with a first gear in a meshed mode, meanwhile, a rotating rod, a rotating disc and a material receiving barrel are driven to rotate, and an arc-shaped groove is used for guiding movement of a guide column, so that the material receiving barrel moves upwards along with a positioning barrel while rotating feeding is conducted; and when moving to the position under the discharging opening of the discharging barrel, the medicine powder moves to the highest point, and at the moment, the discharging opening of the discharging barrel is located in the barrel opening of the material receiving barrel, so that contact between the medicine powder and air in the falling process is reduced to the maximum extent during discharging, dust is reduced, and pollution to the environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical powder weighing technology, specifically to an automatic pharmaceutical powder weighing device. Background Technology

[0002] In the pharmaceutical production process, the accurate weighing of pharmaceutical powder is a key step in ensuring the quality and safety of pharmaceuticals. With the continuous development of automation technology, automatic weighing devices for pharmaceutical powder have gradually replaced the traditional manual weighing method, improving weighing efficiency and accuracy.

[0003] However, when traditional pharmaceutical powders fall from the storage bin into the weighing container through the discharge port, the powders rub against the air during the fall, generating a large amount of dust. This not only pollutes the production environment but may also harm the respiratory system of operators. To address these issues, the inventors have proposed an automatic pharmaceutical powder weighing device. Utility Model Content

[0004] In order to solve the problem that dust generated during automatic weighing of pharmaceutical powders can easily diffuse into the air, the purpose of this utility model is to provide an automatic weighing device for pharmaceutical powders.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic weighing device for pharmaceutical powder, comprising a base plate, a rotating rod rotatably connected to the top of the base plate, a turntable fixedly connected to the top of the rotating rod, a centrally symmetrically distributed through groove on the turntable, a positioning cylinder slidably engaged inside the through groove, a receiving cylinder placed inside the positioning cylinder, an annular frame fixedly connected to the top of the base plate and below the turntable, an arc-shaped groove on the inner side of the annular frame, a fixing rod fixedly connected to the bottom end of the positioning cylinder, a guide post fixedly connected to one side of the bottom of the fixing rod, the guide post movably engaged in the arc-shaped groove, a feeding cylinder provided on the top side of the base plate near the turntable, the feeding port of the feeding cylinder corresponding to the position of the positioning cylinder, and the turntable slidably engaged at the top of the annular frame for stable support of the turntable.

[0006] Preferably, a gear one is fixedly connected to the outer side of the rotating rod, a servo motor is fixedly installed on the top of the base plate near the rotating rod, and a gear two is fixedly connected to the drive end of the servo motor, with the gear two meshing with the gear one.

[0007] Preferably, a support plate is slidably engaged inside the positioning cylinder, the receiving cylinder is placed on top of the support plate, two symmetrically distributed springs are fixedly connected to the bottom end of the support plate, and a displacement sensor is fixedly installed inside the bottom end of the positioning cylinder.

[0008] Preferably, the bottom end of the bearing plate is fixedly connected to two symmetrically distributed guide rods, the spring is movably sleeved on the outside of the guide rods, and the bottom ends of the guide rods extend movably to the bottom of the positioning cylinder and are fixedly connected to a limit block.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. A servo motor drives gear two to rotate, which meshes with gear one, simultaneously driving the rotating rod, turntable, and receiving cylinder to rotate. An arc groove guides the movement of the guide column, so that while the receiving cylinder rotates to feed material, it moves upward with the positioning cylinder. When it moves to the highest point, it is directly below the discharge port of the discharge cylinder. At this point, the discharge port of the discharge cylinder is located inside the opening of the receiving cylinder. This minimizes the contact between the medicine powder and the air during the falling process, thereby reducing dust generation and environmental pollution.

[0011] 2. As the weight of the receiving cylinder increases, it pushes the bearing plate to move towards the side of the spring and compresses the spring. By utilizing the relationship between the spring's elastic coefficient and deformation, the loading amount of the medicine powder in the receiving cylinder is obtained. When the bearing plate comes into contact with the displacement sensor, the receiving stops, thereby realizing the quantitative weighing operation of the equipment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a partial cross-sectional view of the present invention.

[0016] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Base plate; 2. Rotating rod; 3. Turntable; 4. Through groove; 5. Positioning cylinder; 6. Receiving cylinder; 7. Annular frame; 8. Arc groove; 9. Fixing rod; 10. Guide column; 11. Gear 1; 12. Servo motor; 13. Gear 2; 14. Bearing plate; 15. Guide rod; 16. Spring; 17. Limit block; 18. Displacement sensor; 19. Feeding cylinder. Detailed Implementation

[0018] 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.

[0019] Example: Figure 1-4 As shown, this utility model provides an automatic weighing device for pharmaceutical powder, including a base plate 1, a rotating rod 2 rotatably connected to the top of the base plate 1, a turntable 3 fixedly connected to the top of the rotating rod 2, a centrally symmetrically distributed through groove 4 on the turntable 3, a positioning cylinder 5 slidably engaged inside the through groove 4, a receiving cylinder 6 placed inside the positioning cylinder 5, an annular frame 7 fixedly connected to the top of the base plate 1 and below the turntable 3, an arc-shaped groove 8 opened on the inner side of the annular frame 7, a fixing rod 9 fixedly connected to the bottom end of the positioning cylinder 5, a guide post 10 fixedly connected to one side of the bottom of the fixing rod 9, the guide post 10 movably engaged in the arc-shaped groove 8, and a feeding cylinder 19 is provided on the top side of the base plate 1 near the turntable 3, the feeding port of the feeding cylinder 19 corresponding to the position of the positioning cylinder 5.

[0020] Gear 11 is fixedly connected to the outer side of the rotating rod 2. A servo motor 12 is fixedly installed on the top of the base plate 1 near the rotating rod 2. Gear 23 is fixedly connected to the drive end of the servo motor 12. Gear 213 and gear 11 are meshed together.

[0021] By adopting the above technical solution, the servo motor 12 drives the gear 13 to rotate, and the gear 13 meshes with the gear 11, thereby driving the rotating rod 2 and the turntable 3 to rotate, thus realizing the automatic alternating material receiving operation of the receiving cylinder 6.

[0022] The positioning cylinder 5 has a sliding clamp to the bearing plate 14 inside. The receiving cylinder 6 is placed on the top of the bearing plate 14. Two symmetrically distributed springs 16 are fixedly connected to the bottom of the bearing plate 14. A displacement sensor 18 is fixedly installed at the bottom inside the positioning cylinder 5.

[0023] By adopting the above technical solution, when the receiving cylinder 6 is receiving the medicine powder, as the weight of the receiving cylinder 6 increases, it pushes the bearing plate 14 to move towards one side of the spring 16 and compresses the spring 16. By utilizing the relationship between the elastic coefficient and the deformation of the spring 16, the loading amount of medicine powder in the receiving cylinder 6 is obtained. When the bearing plate 14 comes into contact with the displacement sensor 18, the receiving stops, thereby realizing the quantitative weighing operation of the equipment.

[0024] Two symmetrically distributed guide rods 15 are fixedly connected to the bottom end of the bearing plate 14, and springs 16 are movably sleeved on the outside of the guide rods 15.

[0025] By adopting the above technical solution and setting the guide rod 15, the vertical movement of the bearing plate 14 can be guided, thereby improving the stability of the bearing plate 14 during vertical movement.

[0026] The bottom ends of the guide rods 15 extend movably to the bottom of the positioning cylinder 5 and are fixedly connected to the limit block 17.

[0027] By adopting the above technical solution and setting the limit block 17, the movement of the bearing plate 14 can be limited, thereby improving the stability of the equipment.

[0028] The turntable 3 is slidably attached to the top of the annular frame 7 to provide stable support for the turntable 3.

[0029] By adopting the above technical solution, the turntable 3 is slidably attached to the top of the annular frame 7, and the turntable 3 provides stable support for the annular frame 7, thereby ensuring the stability of the turntable 3 when it rotates.

[0030] Working principle: When automatically weighing medicine powder, the receiving cylinder 6 is placed inside the corresponding positioning cylinder 5, and then the servo motor 12 drives the gear 13 to rotate. The gear 13 meshes with the gear 11, which in turn drives the rotating rod 2, the turntable 3 and the receiving cylinder 6 to rotate. The arc groove 8 guides the movement of the guide column 10, so that the receiving cylinder 6 moves upward with the positioning cylinder 5 while rotating to feed the medicine. When it moves to the highest point, it moves directly below the discharge port of the discharge cylinder 19. At this time, the discharge port of the discharge cylinder 19 is located inside the opening of the receiving cylinder 6. This minimizes the contact between the medicine powder and the air during the falling process, thereby reducing the generation of dust.

[0031] Meanwhile, when the receiving cylinder 6 is receiving the medicine powder, as the weight of the receiving cylinder 6 increases, it pushes the bearing plate 14 to move towards one side of the spring 16 and compresses the spring 16. By using the relationship between the elastic coefficient and the deformation of the spring 16, the loading amount of medicine powder in the receiving cylinder 6 is obtained. When the bearing plate 14 comes into contact with the displacement sensor 18, the receiving stops, thereby realizing the quantitative weighing operation of the equipment.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An automatic weighing device for pharmaceutical powder, comprising a base plate (1), characterized in that: A rotating rod (2) is rotatably connected to the top of the base plate (1). A turntable (3) is fixedly connected to the top of the rotating rod (2). A centrally symmetrical through groove (4) is provided on the turntable (3). A positioning cylinder (5) is slidably engaged inside the through groove (4). A receiving cylinder (6) is placed inside the positioning cylinder (5). An annular frame (7) is fixedly connected to the top of the base plate (1) and below the turntable (3). An arc groove (8) is provided on the inner side of the annular frame (7). A fixing rod (9) is fixedly connected to the bottom end of the positioning cylinder (5). A guide post (10) is fixedly connected to one side of the bottom of the fixing rod (9). The guide post (10) is movably engaged in the arc groove (8). A discharge cylinder (19) is provided on the top of the base plate (1) near the turntable (3). The discharge port of the discharge cylinder (19) corresponds to the position of the positioning cylinder (5).

2. The automatic weighing device for pharmaceutical powder as described in claim 1, characterized in that, Gear 1 (11) is fixedly connected to the outer side of the rotating rod (2). A servo motor (12) is fixedly installed on the top of the base plate (1) near the rotating rod (2). Gear 2 (13) is fixedly connected to the drive end of the servo motor (12). Gear 2 (13) and gear 1 (11) are meshed together.

3. The automatic weighing device for pharmaceutical powder as described in claim 1, characterized in that, The positioning cylinder (5) has a support plate (14) slidably attached inside. The receiving cylinder (6) is placed on the top of the support plate (14). Two symmetrically distributed springs (16) are fixedly connected to the bottom of the support plate (14). A displacement sensor (18) is fixedly installed inside the bottom of the positioning cylinder (5).

4. The automatic weighing device for pharmaceutical powder as described in claim 3, characterized in that, The bottom end of the bearing plate (14) is fixedly connected to two symmetrically distributed guide rods (15), and the spring (16) is movably sleeved on the outside of the guide rods (15).

5. The automatic weighing device for pharmaceutical powder as described in claim 4, characterized in that, The bottom ends of the guide rods (15) extend movably to the bottom of the positioning cylinder (5) and are fixedly connected to the limit block (17).

6. The automatic weighing device for pharmaceutical powder as described in claim 1, characterized in that, The turntable (3) is slidably engaged at the top of the annular frame (7) to provide stable support for the turntable (3).

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