A pharmaceutical cartoning machine deviation rectifying device and method

Abstract

The application is suitable for the technical field of medicine boxing machine components, and provides a pharmaceutical boxing machine deviation rectifying device and method, which comprises two rack arranged at intervals, two rotating rollers arranged at intervals arranged between the racks, a conveying belt installed between the two rotating rollers, a connecting shaft fixedly installed on each rotating roller, the connecting shaft being rotatably installed on the racks on both sides, a first servo motor fixedly installed on the racks, a deviation rectifying mechanism installed between the two racks, and an adjusting assembly, which is used for adjusting the position of the rotating wheel. The deviation rectifying mechanism adjusts the horizontal position of the rotating wheel through a bidirectional screw rod and a movable seat, can be suitable for packaging boxes of different width specifications, and the electric push rod drives the first supporting plate to move up and down, so that the height of the rotating wheel can be adjusted to adapt to packaging boxes of different height specifications. After the movable seat drives the electric push rod and the first supporting plate to be roughly positioned, the electric push rod is accurately adjusted, so that the rotating wheel can accurately rectify packaging boxes of different specifications.

Description

Technical Field

[0001] This invention belongs to the technical field of pharmaceutical cartoning machine components, and particularly relates to a correction device and method for a pharmaceutical cartoning machine. Background Technology

[0002] The alignment device of a pharmaceutical cartoning machine is a key component of an automated pharmaceutical packaging production line. It is mainly used to ensure that packaging materials (such as cardboard boxes, instruction manuals, aluminum foil, etc.) remain accurately aligned during high-speed movement, avoiding packaging errors, material waste, or product damage caused by misalignment.

[0003] A packaging box printing transmission positioning and correction mechanism with publication number CN111959108B is disclosed, which specifically includes a bracket, a motor mounted on the side of the bracket, two transmission rollers rotatably disposed on the inner side of the bracket via bearings, and a conveyor belt sleeved on the two transmission rollers. The rotating shaft of one of the transmission rollers is connected to the transmission shaft of the motor. Two fixing plates are symmetrically fixed on the end side of the bracket, and a main positioning plate is symmetrically fixed on the two fixing plates. At the same time, a number of secondary positioning plates with gradually decreasing spacing and smooth inward bending are connected to the main positioning plates, and the bottom of the main positioning plates and the secondary positioning plates are both attached to the transmission belt.

[0004] However, existing pharmaceutical cartoning machines need to transport packaging boxes of different specifications during operation. Because the correction device cannot adapt to the specifications of the packaging boxes, manual adjustment of the correction device parameters (such as roller position) is required when changing packaging box specifications, which is time-consuming and significantly impacts multi-variety, small-batch production. To solve these problems, it is essential to design a correction device and method for pharmaceutical cartoning machines. Summary of the Invention

[0005] This invention provides a correction device and method for a pharmaceutical cartoning machine, which aims to solve the problem that current pharmaceutical cartoning machines need to transport packaging boxes of different specifications during operation, but the correction device cannot be adaptively adjusted according to the specifications of the packaging boxes.

[0006] The present invention is implemented as follows: a correction device for a pharmaceutical cartoning machine includes two spaced-apart frames, two spaced-apart rotating rollers between the frames, a conveyor belt installed between the two rotating rollers, the conveyor belt rotating along the two rotating rollers, and a tensioning mechanism provided at the lower end of the conveyor belt for tensioning the conveyor belt.

[0007] Each of the rotating rollers is fixedly mounted with a connecting shaft, which is rotatably mounted on the frames on both sides. A first servo motor is fixedly mounted on the frame, and the output shaft of the first servo motor is fixedly connected to the connecting shaft on one side. A synchronous belt mechanism is mounted on the frame, and the synchronous belt mechanism is connected to the two rotating rollers. The two rotating rollers are driven by the synchronous belt mechanism. A correction mechanism is installed between the two frames. The correction mechanism is located above the conveyor belt and is used to correct the deviation of the packaging box above the conveyor belt. The correction mechanism includes two symmetrically distributed first support plates, which are located above the conveyor belt and between the two frames. Rollers are rotatably mounted on each of the first support plates. A correction wheel is fixedly mounted at the lower end of each roller. The correction mechanism also includes an adjustment component for adjusting the position of the correction wheel.

[0008] As a preferred embodiment, the adjustment assembly includes two spaced-apart movable seats, on which two spaced-apart electric push rods are fixedly mounted. The output ends of the electric push rods are fixedly connected to a first support plate. Two spaced-apart guide rods are fixedly mounted between the two frames. The guide rods pass through the two movable seats, and the movable seats slide along the guide rods.

[0009] As a preferred embodiment, a bidirectional lead screw is rotatably mounted between the two frames. The bidirectional lead screw passes through the two movable seats and is threadedly connected to the movable seats. A second servo motor is fixedly mounted on the frame, and the output shaft of the second servo motor is fixedly connected to the bidirectional lead screw.

[0010] As a preferred embodiment, the frame is provided with multiple mounting holes, and the frame is connected to an external cartoning machine by screws. Both ends of the roller are fixedly installed with baffles.

[0011] As a preferred embodiment, the tensioning mechanism includes a base plate connected to an external cartoning machine by screws. A movable frame is provided at the upper end of the base plate, and vertical rods pass through both ends of the movable frame. The lower ends of the vertical rods are fixedly connected to the base plate. The movable frame slides up and down along the vertical rods. A tensioning roller is rotatably installed inside the movable frame. A hydraulic rod is fixedly installed on the base plate, and the output end of the hydraulic rod is fixedly connected to the movable frame.

[0012] As a preferred embodiment, the first servo motor, hydraulic rod, electric push rod, and second servo motor are all electrically connected to an external control device.

[0013] As a preferred embodiment, the conveyor belt is equipped with a shaking mechanism, which is used to drive different positions on the conveyor belt to undulate.

[0014] As a preferred embodiment, the shaking mechanism includes a second support plate fixedly mounted on a frame on one side. Multiple eccentric rollers are arranged equidistantly within the conveyor belt. An eccentric shaft is fixedly mounted on each eccentric roller and rotatably mounted on the second support plate. The eccentric rollers rotate around the eccentric shaft and are used to push the conveyor belt. A first bevel gear is fixedly mounted at one end of the eccentric shaft. A drive shaft is rotatably mounted on the second support plate. Multiple equidistant second bevel gears are fixedly mounted on the drive shaft, and the second bevel gears mesh with the first bevel gears respectively. A third servo motor is fixedly mounted on the second support plate, and the output shaft of the third servo motor is fixedly connected to the drive shaft.

[0015] As a preferred embodiment, the surfaces of the plurality of eccentric rollers and the plurality of rotating wheels are all polished.

[0016] A method for correcting deviations in a pharmaceutical cartoning machine includes the following steps: S1: Start the first servo motor, whose output shaft drives the connected shaft and the rotating roller to rotate. Through the transmission of the synchronous belt mechanism, the other rotating roller rotates synchronously, thereby driving the conveyor belt to rotate along the two rotating rollers, realizing the conveying of the packaging box on the conveyor belt. S2: According to the packaging box specifications, the external control device controls the rotation of the second servo motor. The output shaft of the second servo motor drives the bidirectional lead screw to rotate. Since the bidirectional lead screw is threadedly connected to the movable seat, and the movable seat can only slide along the guide rod under the restriction of the guide rod, the two movable seats can move towards or away from each other, so as to roughly adjust the horizontal position of the wheel. After that, the external control device controls the electric push rod to perform telescopic movement, precisely adjust the position of the first support plate, and then precisely adjust the position of the roller and wheel installed on the first support plate, so that the wheel can adapt to the correction requirements of packaging boxes of different specifications.

[0017] S3: When the packaging box deviates during conveyor belt transport, the roller contacts the side of the packaging box. Since the roller can rotate, it exerts a reverse force on the packaging box as it continues to be transported, causing the packaging box to return to the correct transport position. At the same time, the external control device controls the third servo motor to start. The output shaft of the third servo motor drives the drive shaft to rotate, and multiple second bevel gears on the drive shaft rotate accordingly. The second bevel gears drive the first bevel gear to rotate, and the first bevel gear drives the eccentric shaft to rotate. The eccentric shaft drives the eccentric roller to rotate eccentrically around the eccentric shaft. Multiple eccentric rollers sequentially push the conveyor belt, causing different positions on the conveyor belt to undulate, making the packaging box vibrate slightly, which helps the packaging box adjust its position and prevents it from sticking together.

[0018] Compared with related technologies, the pharmaceutical cartoning machine correction device and method provided by the present invention have the following beneficial effects: 1. The correction mechanism adjusts the horizontal position of the rotating wheel through a two-way lead screw and a movable seat, making it suitable for packaging boxes of different widths. The electric push rod moves the first support plate up and down, adjusting the height of the rotating wheel to accommodate packaging boxes of different heights. After the movable seat roughly positions the electric push rod and the first support plate, the electric push rod is then precisely adjusted so that the rotating wheel can accurately correct the deviation of packaging boxes of different sizes, improving the versatility and correction effect of the device.

[0019] 2. The device ensures stable and accurate conveying of packaging boxes by setting up a shaking mechanism. The conveyor belt is equipped with a shaking mechanism. The third servo motor drives the drive shaft to rotate. Through the meshing of the second bevel gear and the first bevel gear, the eccentric roller rotates eccentrically around the eccentric shaft, which in turn pushes the conveyor belt, causing different positions on the conveyor belt to undulate. This causes the packaging box to vibrate slightly, which helps it adjust its position during the conveying process, prevents it from sticking to the conveyor belt, and improves the stability and accuracy of the conveying. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a partial enlarged schematic diagram of the correction mechanism in this invention; Figure 5 This is an enlarged schematic diagram of a portion of the structure at the conveyor belt in this invention; Figure 6 This is an exploded view of the conveyor belt and eccentric roller in this invention; Figure 7 For the present invention Figure 6 Enlarged diagram of point A in the diagram.

[0021] In the diagram: 1. Frame; 2. Rotary roller; 3. Conveyor belt; 4. Connecting shaft; 5. First servo motor; 6. First support plate; 7. Roller; 8. Rotary wheel; 9. Movable seat; 10. Electric push rod; 11. Guide rod; 12. Bidirectional lead screw; 13. Second servo motor; 14. Baffle plate; 15. Base plate; 16. Movable frame; 17. Vertical rod; 18. Tensioning roller; 19. Hydraulic rod; 20. Synchronous belt mechanism; 21. Second support plate; 22. Eccentric roller; 23. Eccentric shaft; 24. First bevel gear; 25. Drive shaft; 26. Second bevel gear; 27. Third servo motor. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] A preferred embodiment of the pharmaceutical cartoning machine correction device and method provided by the present invention is as follows: Figures 1 to 7 As shown: A correction device for a pharmaceutical cartoning machine includes two spaced-apart frames 1, two spaced-apart rotating rollers 2 between the frames 1, a conveyor belt 3 between the two rotating rollers 2, the conveyor belt 3 rotating along the two rotating rollers 2, and a tensioning mechanism at the lower end of the conveyor belt 3 for tensioning the conveyor belt 3. Each of the rollers 2 is fixedly mounted with a connecting shaft 4, which is rotatably mounted on the two side frames 1. A first servo motor 5 is fixedly mounted on the frame 1, and the output shaft of the first servo motor 5 is fixedly connected to the connecting shaft 4 on one side. A synchronous belt mechanism 20 is mounted on the frame 1, which is connected to the two rollers 2. The two rollers 2 are driven by the synchronous belt mechanism 20. A correction mechanism is installed between the two frames 1. The correction mechanism is set above the conveyor belt 3 and is used to correct the packaging box above the conveyor belt 3. The correction mechanism includes two symmetrically distributed first support plates 6, which are set above the conveyor belt 3 and located between the two frames 1. Rollers 7 are rotatably mounted on each of the first support plates 6. A correction wheel 8 is fixedly mounted at the lower end of the roller 7. The correction mechanism also includes an adjustment component for adjusting the position of the wheel 8.

[0025] The adjustment assembly includes two spaced-apart movable seats 9, on which two spaced-apart electric push rods 10 are fixedly mounted. The output ends of the electric push rods 10 are fixedly connected to the first support plate 6. Two spaced-apart guide rods 11 are fixedly mounted between the two frames 1, passing through the two movable seats 9, and the movable seats 9 slide along the guide rods 11. A bidirectional lead screw 12 is rotatably mounted between the two frames 1, passing through the two movable seats 9 and threadedly connected to them. A second servo motor 13 is fixedly mounted on the frame 1, and its output shaft is fixedly connected to the bidirectional lead screw 12. The frame 1 has multiple mounting holes and is connected to an external cartoning machine by screws. Baffles 14 are fixedly mounted at both ends of the roller 2. The multiple mounting holes on the frame 1 and the screw connection to the external cartoning machine achieve a fixed installation of the entire correction device with the external cartoning machine. The baffles 14 fixedly mounted at both ends of the roller 2 prevent the conveyor belt 3 from slipping off the roller 2 during rotation, ensuring stable operation of the conveyor belt 3.

[0026] In this embodiment, the first servo motor 5 is started, and its output shaft drives the connecting shaft 4 and the rotating roller 2 connected to it to rotate. Through the transmission of the synchronous belt mechanism 20, the other rotating roller 2 rotates synchronously, thereby driving the conveyor belt 3 to rotate along the two rotating rollers 2, so as to realize the conveying of the packaging box on the conveyor belt 3.

[0027] The overall adjustment principle of the correction mechanism is to change the position of the movable seat 9, which drives the first support plate 6 to move up and down via the electric push rod 10, thereby adjusting the height position of the rotating wheel 8 to adapt to the correction needs of packaging boxes of different heights. When it is necessary to adjust the horizontal position of the rotating wheel 8, the second servo motor 13 is started, and its output shaft drives the bidirectional lead screw 12 to rotate. Since the bidirectional lead screw 12 is threadedly connected to the movable seat 9, and the movable seat 9 can only slide along the guide rod 11 under the restriction of the guide rod 11, the rotation of the bidirectional lead screw 12 will cause the two movable seats 9 to move towards or away from each other, thus adapting to the correction needs of packaging boxes of different widths.

[0028] After the movable seat 9 moves the electric push rod 10 and the first support plate 6 to a suitable position, the electric push rod 10 can extend and retract to further precisely adjust the position of the first support plate 6, and then precisely adjust the position of the roller 7 and the rotating wheel 8 installed on the first support plate 6, so that the rotating wheel 8 can accurately correct the deviation of packaging boxes of different sizes. When the packaging box deviates during the conveyor belt 3, the rotating wheel 8 will contact the side of the packaging box. Since the rotating wheel 8 can rotate, during the continued conveying of the packaging box, the rotating wheel 8 will exert a reverse force on the packaging box, so that the packaging box returns to the correct conveying position, thus realizing the deviation correction function.

[0029] In a further preferred embodiment of the present invention: The tensioning mechanism includes a base plate 15 connected to an external cartoning machine by screws. A movable frame 16 is provided at the upper end of the base plate 15. Vertical rods 17 pass through both ends of the movable frame 16. The lower ends of the vertical rods 17 are fixedly connected to the base plate 15. The movable frame 16 slides up and down along the vertical rods 17. A tensioning roller 18 is rotatably installed inside the movable frame 16. A hydraulic rod 19 is fixedly installed on the base plate 15. The output end of the hydraulic rod 19 is fixedly connected to the movable frame 16. The first servo motor 5, the hydraulic rod 19, the electric push rod 10, and the second servo motor 13 are all electrically connected to an external control device.

[0030] The external control device can precisely control the actions of these components according to preset programs and actual production needs. For example, when changing to different specifications of packaging boxes, the external control device can control the rotation of the second servo motor 13 according to the specifications of the packaging box, adjust the position of the rotating wheel 8 through the bidirectional lead screw 12 and the movable seat 9, and simultaneously control the electric push rod 10 to make fine adjustments so that the rotating wheel 8 is in a suitable position for correcting the packaging box of that specification; control the hydraulic rod 19 to adjust the tension of the conveyor belt 3 to ensure the normal operation of the conveyor belt 3; control the third servo motor 27 to start or stop the shaking mechanism, and adjust the frequency and amplitude of the shaking; and control the speed of the first servo motor 5 to adapt to the conveying speed requirements of the packaging boxes under different production rhythms. Through this centralized control method, the entire pharmaceutical cartoning machine's correction device is automated and intelligently operated, improving production efficiency and product quality.

[0031] The conveyor belt 3 is equipped with a shaking mechanism to drive different positions on the conveyor belt 3 to undulate. The shaking mechanism includes a second support plate 21 fixedly mounted on a frame 1 on one side. Multiple eccentric rollers 22 are evenly distributed within the conveyor belt 3. An eccentric shaft 23 is fixedly mounted on each eccentric roller 22 and rotatably mounted on the second support plate 21. The eccentric rollers 22 rotate around the eccentric shaft 23 and push the conveyor belt 3. A first bevel gear 24 is fixedly mounted at one end of the eccentric shaft 23. A drive shaft 25 is rotatably mounted on the second support plate 21. Multiple second bevel gears 26 are fixedly mounted on the drive shaft 25, and the second bevel gears 26 mesh with the first bevel gears 24 respectively. A third servo motor 27 is fixedly mounted on the second support plate 21, and the output shaft of the third servo motor 27 is fixedly connected to the drive shaft 25. The surfaces of the multiple eccentric rollers 22 and multiple rotating wheels 8 are all polished. After polishing, the surfaces of the eccentric rollers 22 and rotating wheels 8 become smoother. For the eccentric roller 22, the smooth surface reduces friction with the conveyor belt 3, allowing the eccentric roller 22 to rotate more smoothly and transmit power to the conveyor belt 3 more effectively, achieving stable undulating motion. It also reduces wear on the conveyor belt 3, extending its service life. For the roller 8, the smooth surface reduces friction when in contact with the side of the packaging box. During the correction process, it provides sufficient counterforce to return the packaging box to the correct position while preventing damage to the box surface due to excessive friction, ensuring the quality and appearance integrity of the packaging box.

[0032] In this embodiment, an external control device controls the extension and retraction of the hydraulic rod 19. When the conveyor belt 3 needs tension, the output end of the hydraulic rod 19 extends, pushing the movable frame 16 to slide upward along the vertical rod 17. The movable frame 16 drives the tensioning roller 18 to move upward, lifting the conveyor belt 3 and tensioning it. When the conveyor belt 3 needs to be relaxed, the output end of the hydraulic rod 19 retracts, pulling the movable frame 16 to slide downward along the vertical rod 17. The movable frame 16 drives the tensioning roller 18 to move downward, relaxing the conveyor belt 3. In this way, the tension of the conveyor belt 3 can be flexibly adjusted according to the actual situation, ensuring stable operation of the conveyor belt 3 and avoiding the impact of excessively loose or tight conveyor belt 3 on the conveying and correction of packaging boxes.

[0033] An external control device starts the third servo motor 27, whose output shaft drives the drive shaft 25 to rotate. Multiple second bevel gears 26 on the drive shaft 25 then rotate. Since the second bevel gears 26 mesh with the first bevel gear 24, their rotation drives the first bevel gear 24, which in turn drives the eccentric shaft 23. The eccentric shaft 23 then drives the eccentric roller 22 to rotate eccentrically around it. These multiple eccentric rollers 22 sequentially push against the conveyor belt 3, causing undulating motion at different positions on the conveyor belt 3. This undulating motion creates slight vibrations in the packaging boxes on the conveyor belt 3, helping them to better adjust their position during transport. It also prevents the packaging boxes from sticking together due to prolonged close contact with the conveyor belt 3, improving the stability and accuracy of the packaging box transport.

[0034] A method for correcting deviations in a pharmaceutical cartoning machine includes the following steps: S1: Start the first servo motor 5, whose output shaft drives the connected shaft 4 and the rotating roller 2 to rotate. Through the transmission of the synchronous belt mechanism 20, the other rotating roller 2 rotates synchronously, thereby driving the conveyor belt 3 to rotate along the two rotating rollers 2, so as to realize the conveying of the packaging box on the conveyor belt 3. S2: According to the packaging box specifications, the external control device controls the second servo motor 13 to rotate. The output shaft of the second servo motor 13 drives the bidirectional lead screw 12 to rotate. Since the bidirectional lead screw 12 is threadedly connected to the movable seat 9, and the movable seat 9 can only slide along the guide rod 11 under the restriction of the guide rod 11, the two movable seats 9 can move towards or away from each other, so as to roughly adjust the horizontal position of the rotating wheel 8. After that, the external control device controls the electric push rod 10 to perform telescopic movement, precisely adjust the position of the first support plate 6, and then precisely adjust the position of the roller 7 and the rotating wheel 8 installed on the first support plate 6, so that the rotating wheel 8 can adapt to the correction requirements of packaging boxes of different specifications.

[0035] S3: When the packaging box deviates during conveying on the conveyor belt 3, the roller 8 contacts the side of the packaging box. Since the roller 8 is rotatable, during the continued conveying of the packaging box, the roller 8 exerts a reverse force on the packaging box, causing the packaging box to return to the correct conveying position. At the same time, the external control device controls the third servo motor 27 to start. The output shaft of the third servo motor 27 drives the drive shaft 25 to rotate. The multiple second bevel gears 26 on the drive shaft 25 rotate accordingly. The second bevel gears 26 drive the first bevel gear 24 to rotate. The first bevel gear 24 drives the eccentric shaft 23 to rotate. The eccentric shaft 23 drives the eccentric roller 22 to rotate eccentrically around the eccentric shaft 23. The multiple eccentric rollers 22 sequentially push the conveyor belt 3, causing different positions on the conveyor belt 3 to undulate, causing the packaging box to vibrate slightly, assisting the packaging box in adjusting its position and preventing it from sticking together.

[0036] It is worth noting that the circuits, electronic components, and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0037] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A correction device for a pharmaceutical cartoning machine, characterized in that, It includes two spaced frames (1), two spaced rollers (2) are arranged between the frames (1), a conveyor belt (3) is installed between the two rollers (2), the conveyor belt (3) rotates along the two rollers (2), and a tensioning mechanism is provided at the lower end of the conveyor belt (3) for tensioning the conveyor belt (3). Each of the rotating rollers (2) is fixedly mounted with a connecting shaft (4), which is rotatably mounted on the frame (1) on both sides. A first servo motor (5) is fixedly mounted on the frame (1), and the output shaft of the first servo motor (5) is fixedly connected to the connecting shaft (4) on one side. A synchronous belt mechanism (20) is mounted on the frame (1), which is connected to the two rotating rollers (2). The two rotating rollers (2) are driven by the synchronous belt mechanism (20). A guide is installed between the two frames (1). The correction mechanism is set above the conveyor belt (3) and is used to correct the packaging box above the conveyor belt (3). The correction mechanism includes two symmetrically distributed first support plates (6). The first support plates (6) are set above the conveyor belt (3) and located between two frames (1). Rollers (7) are rotatably installed on each of the first support plates (6). A wheel (8) for correction is fixedly installed at the lower end of the roller (7). The correction mechanism also includes an adjustment component for adjusting the position of the wheel (8).

2. The pharmaceutical cartoning machine correction device as described in claim 1, characterized in that, The adjustment assembly includes two spaced movable seats (9), on which two spaced electric push rods (10) are fixedly installed. The output end of the electric push rods (10) is fixedly connected to the first support plate (6). Two spaced guide rods (11) are fixedly installed between the two frames (1). The guide rods (11) pass through the two movable seats (9), and the movable seats (9) slide along the guide rods (11).

3. The pharmaceutical cartoning machine correction device as described in claim 2, characterized in that, A bidirectional lead screw (12) is rotatably mounted between the two frames (1). The bidirectional lead screw (12) passes through the two movable seats (9) and is threadedly connected to the movable seats (9). A second servo motor (13) is fixedly mounted on the frame (1). The output shaft of the second servo motor (13) is fixedly connected to the bidirectional lead screw (12).

4. The pharmaceutical cartoning machine correction device as described in claim 1, characterized in that, The frame (1) has multiple mounting holes and is connected to an external cartoning machine by screws. Both ends of the roller (2) are fixedly installed with baffles (14).

5. The pharmaceutical cartoning machine correction device as described in claim 1, characterized in that, The tensioning mechanism includes a base plate (15) connected to an external cartoning machine by screws. A movable frame (16) is provided at the upper end of the base plate (15). Vertical rods (17) pass through both ends of the movable frame (16). The lower end of the vertical rods (17) is fixedly connected to the base plate (15). The movable frame (16) slides up and down along the vertical rods (17). A tensioning roller (18) is rotatably installed inside the movable frame (16). A hydraulic rod (19) is fixedly installed on the base plate (15). The output end of the hydraulic rod (19) is fixedly connected to the movable frame (16).

6. The pharmaceutical cartoning machine correction device as described in claim 1, characterized in that, The first servo motor (5), the hydraulic rod (19), the electric push rod (10), and the second servo motor (13) are all electrically connected to an external control device.

7. The pharmaceutical cartoning machine correction device as described in claim 1, characterized in that, The conveyor belt (3) is equipped with a shaking mechanism, which is used to drive different positions on the conveyor belt (3) to undulate.

8. The pharmaceutical cartoning machine correction device as described in claim 7, characterized in that, The shaking mechanism includes a second support plate (21) fixedly mounted on a frame (1) on one side. The conveyor belt (3) is provided with a plurality of equidistant eccentric rollers (22). An eccentric shaft (23) is fixedly mounted on the eccentric rollers (22). The eccentric shaft (23) is rotatably mounted on the second support plate (21). The eccentric rollers (22) rotate around the eccentric shaft (23) and are used to push the conveyor belt (3). A first bevel gear (24) is fixedly mounted on one end of the eccentric shaft (23). A drive shaft (25) is rotatably mounted on the second support plate (21). A plurality of equidistant second bevel gears (26) are fixedly mounted on the drive shaft (25). The second bevel gears (26) mesh with the first bevel gears (24) respectively. A third servo motor (27) is fixedly mounted on the second support plate (21). The output shaft of the third servo motor (27) is fixedly connected to the drive shaft (25).

9. The pharmaceutical cartoning machine correction device as described in claim 8, characterized in that, The surfaces of the plurality of eccentric rollers (22) and the plurality of rotating wheels (8) are all polished.

10. A method for correcting the deviation of a pharmaceutical cartoning machine, using the correction device for a pharmaceutical cartoning machine as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Start the first servo motor (5), whose output shaft drives the connecting shaft (4) and the rotating roller (2) connected to it to rotate. Through the transmission of the synchronous belt mechanism (20), the other rotating roller (2) rotates synchronously, thereby driving the conveyor belt (3) to rotate along the two rotating rollers (2) to realize the conveying of the packaging box on the conveyor belt (3); S2: According to the packaging box specifications, the external control device controls the second servo motor (13) to rotate. The output shaft of the second servo motor (13) drives the bidirectional lead screw (12) to rotate. Since the bidirectional lead screw (12) is threadedly connected to the movable seat (9), and the movable seat (9) can only slide along the guide rod (11) under the restriction of the guide rod (11), the two movable seats (9) move towards each other or away from each other, so as to roughly adjust the horizontal position of the wheel (8). After that, the external control device controls the electric push rod (10) to perform telescopic movement, precisely adjust the position of the first support plate (6), and then precisely adjust the position of the roller (7) and the wheel (8) installed on the first support plate (6), so that the wheel (8) can adapt to the correction requirements of different packaging boxes. S3: When the packaging box deviates during conveying on the conveyor belt (3), the wheel (8) contacts the side of the packaging box. Since the wheel (8) can rotate, during the continued conveying of the packaging box, the wheel (8) gives the packaging box a reverse force, so that the packaging box returns to the correct conveying position. At the same time, the external control device controls the third servo motor (27) to start. The output shaft of the third servo motor (27) drives the drive shaft (25) to rotate. Multiple second bevel gears (26) on the drive shaft (25) rotate accordingly. The second bevel gears (26) drive the first bevel gear (24) to rotate. The first bevel gear (24) drives the eccentric shaft (23) to rotate. The eccentric shaft (23) drives the eccentric roller (22) to rotate eccentrically around the eccentric shaft (23). Multiple eccentric rollers (22) push the conveyor belt (3) in turn, so that different positions on the conveyor belt (3) produce undulating motion, causing the packaging box to vibrate slightly, assisting the packaging box in adjusting its position and preventing it from sticking together.

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