Screw conveyor for the weighing of vials

Abstract

The application discloses a spiral conveying device for medicine bottle filling and weighing, relates to the technical field of medicine filling, and comprises a first conveying belt and a second conveying belt which are oppositely and intervally arranged and used for conveying medicine bottles, wherein a spiral material conveying device is arranged at the opposite end of the first conveying belt and the second conveying belt, that is, the spiral material conveying device is arranged between the first conveying belt and the second conveying belt, the spiral material conveying device is used for filling medicines into the medicine bottles, and the spiral material conveying device comprises a discharging box, a feeding hopper fixedly arranged on the top of the discharging box, a rack fixedly connected to the discharging box and a material conveying auger rotatably arranged in the discharging box. The discharging opening of the spiral material conveying device is directly aligned with the medicine bottle on the weighing device, the medicines are directly filled into the bottle from the material conveying mechanism, the adhesion loss of the medicines on the inner wall of the intermediate container is greatly eliminated, the cross contamination risk caused by the deterioration of residual materials is avoided, the structure is more simple, cleaning is more convenient, and the strict requirement of the equipment cleanliness in the pharmaceutical production quality management specification is met.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical filling technology, and more specifically, to a screw conveyor device for weighing pharmaceutical bottles. Background Technology

[0002] In the pharmaceutical manufacturing industry, especially in the bottling and filling process of granular or powdered drugs, precise control of the filling volume is a key step in ensuring drug quality and medication safety. Currently, the filling and weighing detection technologies for medicine bottles are mainly divided into the following two categories: Currently, a quantitative filling device for granular pharmaceuticals disclosed in Chinese Patent No. CN202421788673.3 uses a screw conveyor mechanism to transport the medicine to an independent quantitative hopper. The medicine is weighed by a weighing element inside the quantitative hopper, and after the weighing reaches the standard, a flipping mechanism pours the medicine from the quantitative hopper into the filling hopper below, finally entering the medicine bottle through the filling port. While this technology can achieve quantitative filling, it has the following shortcomings: First, the medicine needs to undergo a two-stage transfer between the quantitative hopper and the filling hopper. During this process, medicine is prone to adhering to the inner wall of the hopper, causing material loss and creating unsanitary dead corners that are difficult to clean, posing a risk of cross-contamination. This does not meet the strict requirements of Good Manufacturing Practice (GMP) for equipment cleanliness; second, the weighing... Separating the weighing and filling processes leads to uncertainty in the actual amount of medicine entering the bottle and the weighing value, affecting the final filling accuracy. Another example is a bottle weighing and detection device disclosed in Chinese Patent No. CN202420470916.2, which places the weighing scale under a conveyor belt and dynamically weighs the bottles as they move along the belt. While this technology achieves online weighing, its core flaw lies in the fact that the weighing scale directly bears the dynamic interference from the conveyor belt's tension, vibration, and unevenness at the belt joint. These interference signals are superimposed on the bottle's weight signal, resulting in a significant decrease in weighing accuracy. Furthermore, this type of device lacks an active centering mechanism for the bottles, making them prone to deviation on the conveyor belt, further introducing measurement errors and making it difficult to guarantee the reliability and stability of the weighing results. Summary of the Invention

[0003] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a screw conveyor device for weighing medicine bottles that achieves both lossless and contamination-free direct filling during the medicine filling process, while ensuring high accuracy and stability of weighing detection. Specifically, by directly aligning the outlet of the screw conveyor with the medicine bottle located on the weighing device, the medicine is directly poured into the bottle from the conveying mechanism, greatly eliminating the adhesion loss of medicine on the inner wall of the intermediate container and avoiding the risk of cross-contamination caused by the deterioration of residual materials. The structure is simpler and cleaning is more convenient, fully meeting the stringent requirements for equipment cleanliness in pharmaceutical production quality management standards. Simultaneously, two screw feeding rollers are used to precisely guide and convey the medicine bottle, stably transporting it to the weighing device flush with the conveying platform for static weighing. Compared to the method in comparative literature where the weighing scale is placed across the conveyor... By employing a dynamic weighing method below the conveyor belt, this application completely eliminates the dynamic interference of conveyor belt tension, vibration, and uneven belt joints during weighing of medicine bottles. Simultaneously, the forced guiding effect of the spiral feeding roller effectively prevents the medicine bottles from deviating, significantly improving the accuracy and stability of weighing detection. Combined with the integration of the weighing device and the discharge port via a sliding plate, and driven by a telescopic cylinder, a closed-loop control system integrating filling, weighing, and rejection is constructed. When the weighing device detects a defective medicine bottle, the PLC controller immediately instructs the telescopic cylinder to drive the sliding plate to shift, aligning the discharge port with the defective bottle for automatic rejection. Compared to existing technologies that only provide alarms or require manual intervention, this application achieves online automatic sorting of defective products, effectively preventing them from flowing into the next process, significantly improving production efficiency and product qualification rate, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a screw conveyor for weighing medicine bottles, comprising a first conveyor belt and a second conveyor belt, and a screw conveying device disposed at opposite ends of the first conveyor belt and the second conveyor belt, and further comprising a conveying platform disposed below the screw conveying device; Two spiral feeding rollers are rotatably mounted above the conveying platform. One end of each spiral feeding roller is connected to a drive mechanism. The drive mechanism drives the two spiral feeding rollers to rotate together and convey the medicine bottle to one side. The space formed between the medicine bottle and the two spiral feeding rollers is adapted to the space through which the medicine bottle is conveyed to one side. A sliding plate is slidably disposed on the top of the conveying platform. A weighing device is disposed inside the sliding plate. A discharge port is disposed on the sliding plate near the weighing device. A telescopic cylinder is connected to one side of the sliding plate and is fixedly connected to the conveying platform. The material feeding channel is fixedly installed on the conveying platform and located directly below the discharge port of the screw conveyor device. The material feeding channel is internally connected to the discharge port. During processing, the medicine bottle is first conveyed to the input end of the screw conveyor roller via a conveyor belt, and then conveyed to the bottom of the discharge end of the screw conveyor device. At this time, the medicine bottle is also at the top of the weighing device, and the filling and weighing operations are completed simultaneously. If the filling is not qualified, the sliding plate is moved by the telescopic rod, thereby controlling the discharge port on the sliding plate to move to the bottom of the defective medicine bottle. The medicine bottle is then rejected by the discharge channel and removed from the subsequent processing procedures.

[0005] Preferably, the drive mechanism includes an output wheel fixedly connected to one end of the spiral feed roller, an input wheel being driven by a transmission belt, and a mounting plate being rotatably connected to the input wheel via a rotating shaft. The mounting plate is fixedly connected to the corresponding first or second conveyor belt.

[0006] Preferably, a tensioning pulley is provided on one side of the transmission belt, and an adjusting bolt is threadedly connected to one side of the tensioning pulley. The adjusting bolt is rotatably disposed within the mounting plate, and the tensioning pulley is slidably disposed in a limiting groove machined within the mounting plate to adjust the tension of the transmission belt.

[0007] Preferably, both ends of the spiral feed roller are rotatably connected to mounting seats, and the mounting seats are fixedly connected to the corresponding first conveyor belt and second conveyor belt by bolts respectively.

[0008] Preferably, the top of the conveying platform is provided with at least one chute, and the sliding plate is slidably connected in the chute; under normal conditions, the sliding plate and the weighing device inside the chute are flush with the top of the conveying platform, and the medicine bottle is transferred to the top of the weighing device by the spiral feeding roller for filling and weighing.

[0009] Preferably, a discharge head is threadedly connected to the discharge port at the lower end of the screw conveyor, and a flow monitor is also provided on the discharge head for monitoring the amount of material discharged each time.

[0010] Preferably, the screw conveyor includes a feeding box, a feed hopper fixedly installed on the top of the feeding box, a frame fixedly connected to the feeding box, and a conveying auger rotatably installed inside the feeding box.

[0011] Preferably, the feeding head is threadedly connected to the discharge port at the lower end of the feeding box, and the discharge end of the feeding head is directly opposite the inlet end of the feeding channel.

[0012] Preferably, both ends of the spiral feeding roller are provided with guide plates, and the two guide plates are respectively fixedly connected to the first conveyor belt and the second conveyor belt for guiding the input and output of medicine bottles.

[0013] Preferably, it also includes a PLC controller, and both the flow monitor and the weighing device are electrically connected to the PLC controller. Through the cooperation of the flow monitor and the weighing device, the accuracy of the filling weighing data is improved.

[0014] The technical effects and advantages of this invention are as follows: This application allows the medicine to be directly poured into the bottle from the conveying mechanism by aligning the discharge port of the spiral conveying device directly with the medicine bottle located on the weighing device. This greatly eliminates the adhesion and loss of medicine on the inner wall of the intermediate container, avoids the risk of cross-contamination caused by the deterioration of residual materials, and has a simpler structure and is easier to clean. It fully complies with the stringent requirements of Good Manufacturing Practices for pharmaceutical equipment cleanliness.

[0015] This application employs two spiral feeding rollers to precisely guide and transport the medicine bottles, stably conveying them to a weighing device flush with the conveyor platform for static weighing. Compared to the dynamic weighing method in the comparative literature where the weighing scale is positioned below the conveyor belt, this application completely eliminates the dynamic interference of conveyor belt tension, vibration, and uneven belt joints during weighing. At the same time, the forced guiding effect of the spiral feeding rollers effectively prevents the medicine bottles from deviating, significantly improving the accuracy and stability of the weighing detection.

[0016] This application integrates a weighing device and a feeding port via a sliding plate, and with the assistance of a telescopic cylinder, constructs a closed-loop control system that combines filling, weighing, and rejection. When the weighing device detects a defective medicine bottle, the PLC controller immediately instructs the telescopic cylinder to move the sliding plate, aligning the feeding port with the defective bottle for automatic rejection. Compared to existing technologies that can only trigger alarms or require manual intervention, this application achieves online automatic sorting of defective products, effectively preventing them from flowing into the next process and significantly improving production efficiency and product qualification rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the position and structure of the sliding plate and the weighing device of the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the local structure; Figure 4 for Figure 1 A magnified schematic diagram of the drive mechanism; Figure 5 This is a schematic diagram of the structure of the present invention under the condition of rejecting unqualified drugs after filling inspection; Figure 6 This is a top view of the structure of the present invention in the conveying state.

[0018] The attached figures are labeled as follows: 1. First conveyor belt; 2. Second conveyor belt; 3. Screw conveyor; 4. Discharge head; 5. Flow monitor; 6. Conveying platform; 7. Chute; 8. Sliding plate; 9. Weighing device; 10. Discharge port; 11. Discharge channel; 12. Telescopic cylinder; 13. Screw feed roller; 14. Mounting base; 15. Mounting plate; 16. Input wheel; 17. Output wheel; 18. Drive belt; 19. Tensioner wheel; 20. Adjusting bolt; 21. Guide plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] As attached Figures 1 to 6 The diagram shows a screw conveyor for weighing medicine bottles. The device includes a first conveyor belt 1, a second conveyor belt 2, a screw conveyor 3, a conveying platform 6, two screw feeding rollers 13, a sliding plate 8, and a discharge channel 11.

[0021] Please refer to Figure 1 and Figure 6 The first conveyor belt 1 and the second conveyor belt 2 are arranged at intervals to transport medicine bottles. A screw conveyor device 3 is arranged at one end of each of the first and second conveyor belts, spanning between them. The screw conveyor device 3 is used to fill medicine bottles. In one specific embodiment, the screw conveyor device 3 includes a feeding box, a feed hopper fixedly mounted on top of the feeding box, a frame fixedly connected to the feeding box, and a conveying auger (such as...) rotating within the feeding box. Figure 2 and Figure 5 As shown in the diagram, the conveying auger is driven by a motor to rotate, conveying granular or powdered medicines downwards from the feed hopper.

[0022] Furthermore, referring to Figure 1 The discharge port at the lower end of the screw conveyor 3 is threaded with a discharge head 4. The discharge head 4 is also equipped with a flow monitor 5 for real-time monitoring of the discharge amount each time. By replacing the discharge head 4 with different diameters, it can adapt to different specifications of medicine bottles and filling speeds. The flow monitor 5 can provide real-time feedback on the discharge flow rate, providing data support for subsequent precise control.

[0023] Please refer to Figure 1 and Figure 5The conveying platform 6 is located below the screw conveyor 3 and serves as a working platform for weighing and rejecting medicine bottles. The top of the conveying platform 6 is provided with at least one slide groove 7 (preferably two parallel slide grooves in this embodiment) to guide the movement of the sliding plate 8.

[0024] Please refer to Figure 2 , Figure 3 and Figure 5 The sliding plate 8 is slidably connected in the slide groove 7, and its bottom is slidably engaged with the slide groove 7. A weighing device 9 is embedded inside the sliding plate 8. The upper surface of the weighing device 9 is flush with the top of the conveying platform 6 in the initial state. A through discharge port 10 is opened on the sliding plate 8 near the weighing device 9. A telescopic cylinder 12 (such as a hydraulic cylinder or an electric push rod) is connected to one side of the sliding plate 8. The cylinder body of the telescopic cylinder 12 is fixedly connected to the side wall of the conveying platform 6. When the telescopic rod of the telescopic cylinder 12 extends or retracts, it can drive the sliding plate 8 to slide back and forth along the slide groove 7 on the conveying platform 6.

[0025] Please refer to Figure 5 The feeding channel 11 is fixedly installed on the conveying platform 6 and is located directly below the discharge port of the screw conveyor 3 (specifically, the discharge end of the feeding head 4). Importantly, the feeding channel 11 and the feeding port 10 on the sliding plate 8 are spatially connected: when the sliding plate 8 is in the first position (i.e., the normal working position), the feeding port 10 is offset from the feeding channel 11, and the weighing device 9 is located directly below the feeding head 4; when the sliding plate 8 is driven to the second position (i.e., the rejection position) by the telescopic cylinder 12, the feeding port 10 moves exactly to the direct below the feeding head 4 and connects with the inlet of the feeding channel 11.

[0026] Please refer to Figure 1 , Figure 4 and Figure 6 Two spiral feeding rollers 13 are rotatably mounted above the conveying platform 6, and the axes of the two spiral feeding rollers 13 are parallel, forming a conveying channel that matches the shape of the medicine bottle. Each spiral feeding roller 13 has a mounting base 14 rotatably connected to both ends by bearings. The mounting base 14 is fixedly connected to the frame of the corresponding first conveyor belt 1 and second conveyor belt 2 by bolts, thereby stably mounting the spiral feeding roller 13 above the conveying platform 6.

[0027] Each spiral feed roller 13 is connected to a drive mechanism at one end, which drives the two spiral feed rollers 13 to rotate synchronously. For a specific driving method, please refer to [reference needed]. Figure 4The drive mechanism includes an output wheel 17, an input wheel 16, and a transmission belt 18, all fixedly connected to one end of the spiral feed roller 13. The input wheel 16 is rotatably connected to a mounting plate 15 via a shaft. The mounting plate 15 is fixedly connected to the frame corresponding to the first conveyor belt 1 or the second conveyor belt 2. The output wheel 17 is connected to the input wheel 16 via the transmission belt 18. In actual operation, when the drive rollers of the first conveyor belt 1 and the second conveyor belt 2 rotate, they will drive the input wheel 16 to rotate. The input wheel 16 transmits power to the output wheel 17 via the transmission belt 18, thereby driving the spiral feed roller 13 to rotate. This power extraction method eliminates the need for a separate drive motor for the spiral feed roller 13, simplifying the structure and reducing costs (unless, of course, a separate drive motor is required for processing needs).

[0028] To improve transmission reliability, such as Figure 4 As shown, a tensioning pulley 19 is provided on one side of the transmission belt 18, and an adjusting bolt 20 is threadedly connected to one side of the tensioning pulley 19. The adjusting bolt 20 is rotatably mounted within the mounting plate 15, and the tensioning pulley 19 is slidably mounted in a limiting groove machined within the mounting plate 15. By rotating the adjusting bolt 20, the tensioning pulley 19 can be pushed to move along the limiting groove, thereby changing the tension of the transmission belt 18 and preventing the transmission belt 18 from slipping or becoming too tight.

[0029] In addition, such as Figure 1 and Figure 6 As shown, guide plates 21 are also provided at both ends of the spiral feeding roller 13. The two guide plates 21 are fixedly connected to the frame of the first conveyor belt 1 and the second conveyor belt 2 respectively, and are used to guide the medicine bottles smoothly from the first conveyor belt 1 into the conveying channel between the two spiral feeding rollers 13, and after filling and weighing, guide the medicine bottles to the second conveyor belt 2 for output.

[0030] The device also includes a PLC controller (not shown in the figure). The flow monitor 5 and the weighing device 9 are both electrically connected to the PLC controller. The PLC controller is also used to control the start and stop of the screw conveyor 3, the action of the telescopic cylinder 12, and the operation of the first conveyor belt 1 and the second conveyor belt 2.

[0031] Working principle: During the feeding process, empty medicine bottles are conveyed by the first conveyor belt 1 to the input end of the spiral feeding roller 13. Guided by the guide plate 21, the medicine bottles enter the conveying channel between the two spiral feeding rollers 13. As the two spiral feeding rollers 13 rotate synchronously, the spiral patterns on their surfaces push the medicine bottles to move smoothly along the top of the conveying platform 6 towards the spiral conveying device 3. Due to the precise guiding effect of the spiral feeding rollers 13, the medicine bottles are accurately conveyed to the predetermined position, that is, directly above the weighing device 9 and directly below the unloading head 4. When the medicine bottles reach the designated position, the spiral conveying device... When set to 3, the conveying auger rotates, transporting the medicine from the feed hopper to the discharge head 4, and then filling it into the medicine bottle through the discharge end of the discharge head 4. During this process, the medicine bottle remains stationary on the weighing device 9 (since the weighing device 9 is flush with the conveying platform 6, the bottom of the medicine bottle is completely supported by the weighing device 9). The weighing device 9 detects the total weight of the medicine bottle and its contents in real time and transmits the weight signal to the PLC controller in real time. At the same time, the flow monitor 5 also monitors the discharge flow rate in real time and transmits the flow rate signal to the PLC controller. The PLC controller, based on the preset filling weight target value and in conjunction with the weighing device... The real-time feedback signal of PLC 9 precisely controls the start and stop of the screw conveyor 3, realizing precise closed-loop control of "filling and weighing simultaneously, stopping when the quantity is reached". If the PLC controller determines that the filling weight of the current medicine bottle meets the preset standard, after weighing, the two screw conveyor rollers 13 continue to rotate, pushing the qualified medicine bottle out from the other end of the conveying channel. Under the guidance of the guide plate 21, the medicine bottle is transferred to the second conveyor belt 2 and enters the subsequent packaging process. If the PLC controller determines that the filling weight of the current medicine bottle does not meet the preset standard (e.g., overweight or underweight), the PLC controller immediately... The command is issued to extend or retract the telescopic rod of the telescopic cylinder 12, driving the sliding plate 8 to move along the slide groove 7, so that the discharge port 10 on the sliding plate 8 moves directly below the discharge head 4 (at this time, the defective medicine bottle is exactly above the discharge port 10). Then, the discharge port 10 connects with the discharge channel 11, and the defective medicine bottle falls into the discharge port 10 due to loss of support and is discharged through the discharge channel 11 and collected in the waste area. After the rejection is completed, the telescopic cylinder 12 drives the sliding plate 8 to reset, so that the weighing device 9 returns to directly below the discharge head 4, waiting for the arrival of the next medicine bottle.

[0032] It should be further added that the screw conveyor 3, screw conveyor roller 13, weighing device 9, discharge port 10, etc. can be set up in one or more sets on the screw conveyor roller 13 conveying line according to the needs. The more sets are set up, the higher the filling efficiency will be. Those skilled in the art can set them up according to actual needs, which will not be described in detail here.

[0033] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A screw conveyor for weighing medicine bottles, comprising a first conveyor belt (1) and a second conveyor belt (2) and a screw conveying device (3) disposed at opposite ends of the first conveyor belt (1) and the second conveyor belt (2), characterized in that: It also includes a conveying platform (6), which is located below the screw conveyor (3); Two spiral feeding rollers (13) are rotatably arranged above the conveying platform (6). One end of each spiral feeding roller (13) is connected to a driving mechanism. The driving mechanism drives the two spiral feeding rollers (13) to rotate together and convey the medicine bottle to one side. A sliding plate (8) is slidably disposed on the top of the conveying platform (6). A weighing device (9) is disposed inside the sliding plate (8). A discharge port (10) is disposed on the side of the sliding plate (8) near the weighing device (9). A telescopic cylinder (12) is connected to one side of the sliding plate (8). The telescopic cylinder (12) is fixedly connected to the conveying platform (6). The material feeding channel (11) is fixedly installed on the conveying platform (6) and located directly below the discharge port of the spiral conveying device (3). The material feeding channel (11) is internally connected to the discharge port (10).

2. The screw conveyor device for weighing medicine bottles according to claim 1, characterized in that: The drive mechanism includes an output wheel (17) fixedly connected to one end of the spiral feed roller (13). The output wheel (17) is connected to an input wheel (16) via a transmission belt (18). The input wheel (16) is rotatably connected to a mounting plate (15) via a rotating shaft. The mounting plate (15) is fixedly connected to the corresponding first conveyor belt (1) or second conveyor belt (2).

3. A screw conveyor device for weighing medicine bottles according to claim 2, characterized in that: A tensioning wheel (19) is provided on one side of the transmission belt (18), and an adjusting bolt (20) is threadedly connected to one side of the tensioning wheel (19). The adjusting bolt (20) is rotatably disposed in the mounting plate (15), and the tensioning wheel (19) is slidably disposed in the limiting groove formed in the mounting plate (15) to adjust the tension of the transmission belt (18).

4. A screw conveyor device for weighing medicine bottles according to claim 2, characterized in that: Both ends of the spiral feed roller (13) are rotatably connected to mounting bases (14), and the mounting bases (14) are fixedly connected to the corresponding first conveyor belt (1) and second conveyor belt (2) by bolts respectively.

5. A screw conveyor for weighing medicine bottles according to any one of claims 1 to 4, characterized in that: At least one chute (7) is provided on the top of the conveying platform (6), and the sliding plate (8) is slidably connected in the chute (7). Under normal conditions, the sliding plate (8) and the weighing device (9) inside the chute (7) are flush with the top of the conveying platform (6), and the medicine bottle is transferred to the top of the weighing device (9) by the spiral feeding roller (13) for filling and weighing.

6. A screw conveyor device for weighing medicine bottles according to claim 1, characterized in that: The screw conveyor (3) has a feed head (4) threadedly connected to the discharge port at the lower end. The feed head (4) is also equipped with a flow monitor (5) for monitoring the amount of material fed each time.

7. A screw conveyor device for weighing medicine bottles according to claim 6, characterized in that: The spiral conveying device (3) includes a feeding box, a feed hopper fixedly installed on the top of the feeding box, a frame fixedly connected to the feeding box, and a conveying auger rotatably installed inside the feeding box.

8. A screw conveyor for weighing medicine bottles according to claim 7, characterized in that: The feeding head (4) is threadedly connected to the discharge port at the lower end of the feeding box, and the discharge end of the feeding head (4) is directly opposite the feed end of the feeding channel (11).

9. A screw conveyor device for weighing medicine bottles according to claim 1, characterized in that: Both ends of the spiral feeding roller (13) are provided with guide plates (21). The two guide plates (21) are fixedly connected to the first conveyor belt (1) and the second conveyor belt (2) respectively, for guiding the input and output of medicine bottles.

10. A screw conveyor device for weighing medicine bottles according to claim 1, characterized in that: It also includes a PLC controller, and the flow monitor (5) and the weighing device (9) are both electrically connected to the PLC controller.

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