Magnetically-driven quantitative plate mechanism for sterile paper box filling equipment and use method of magnetically-driven quantitative plate mechanism

Abstract

The invention belongs to the technical field of quantification of sterile paper box filling machines, and particularly relates to a magnetic driving type quantification plate mechanism for sterile paper box filling equipment and a using method. Comprising two quantitative plates arranged oppositely and threaded rods arranged on the sides, away from each other, of the two quantitative plates, a limiting assembly is connected between the two threaded rods, a magnetic driving assembly is further arranged on the threaded rod between each quantitative plate and the limiting assembly, and a reset assembly is connected to the magnetic driving assembly. The adjusting process of the quantitative plate mechanism is effectively simplified, and paper boxes of different specifications can be quickly adapted without disassembling a large number of rack components; the positions of the quantitative plates on the two sides are consistent by synchronously adjusting the limiting assembly, and the accuracy of the perfusion amount is greatly improved; a connecting rod transmission structure easy to wear is abandoned, the stability of equipment operation is remarkably improved, the service life of the whole machine is prolonged, and the later maintenance cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of quantitative technology for aseptic carton filling machines, specifically relating to a magnetically driven quantitative plate mechanism and its usage method for aseptic carton filling equipment. Background Technology

[0002] Controlling the filling volume of an aseptic carton filling machine is a crucial step in ensuring product quality and stability. Aseptic carton filling equipment using a composite filling tube typically employs a valve-based filling and carton-sealing method: after the carton is transported to the designated station, liquid is injected into the carton through the filling tube. Subsequently, the equipment applies a pressure seal at a preset position on the top of the carton, while simultaneously diverting excess liquid to adjacent upstream cartons, thus ensuring consistent filling volume across all cartons.

[0003] However, during the actual filling process, after the liquid is injected into the cardboard box, the side walls will bulge outward and deform under the influence of gravity. This deformation will cause the actual filling volume inside the cardboard box to exceed the standard value after sealing, seriously affecting the stability of the filling volume.

[0004] Patent 2025209797111 discloses a metering device suitable for aseptic carton filling equipment, the core of which is a metering plate mechanism ( Figure 7 The method involves using a cylinder-driven linkage assembly to compress and support the two side walls of the cardboard box, thereby suppressing box deformation and achieving precise control of the filling volume. However, this solution has significant drawbacks: Since most filling machines require multiple components to work together quickly to complete complex actions such as filling, sealing, metering, paper feeding, and cutting, their structures are compact and complex. The metering plate mechanism is often located inside the frame. When adjusting the metering standard according to the cardboard box specifications, a large number of components need to be disassembled to complete the adjustment. Furthermore, during the adjustment process, the two metering plates need to be adjusted separately, making synchronous adjustment impossible and easily leading to different adjustment degrees, affecting metering accuracy. The metering plate mechanism is controlled by a separate cylinder, resulting in a large number of cylinders used in the filling machine. The linkage mechanism has a large range of motion, and under long-term reciprocating motion, it is prone to wear and malfunctions, affecting the stability and service life of the equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a magnetically driven quantitative plate mechanism and its usage method for aseptic carton filling equipment. This solves the problems of existing aseptic carton filling machines where the quantitative plate mechanism requires disassembly of multiple parts for adjustment, the inability to adjust both sides synchronously affecting accuracy, and the easy wear and tear of connecting rods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a magnetically driven quantitative plate mechanism for aseptic carton filling equipment, comprising two quantitative plates arranged opposite each other, threaded rods disposed on opposite sides of the two quantitative plates, a limiting component connected between the two threaded rods, and a magnetic driving component disposed on the threaded rod between each quantitative plate and the limiting component, and a reset component connected to the magnetic driving component.

[0007] Furthermore, the magnetic drive assembly includes a first magnet fixing block, a second magnet fixing block, and a push block sequentially sleeved on the threaded rod. The first magnet fixing block contains a first magnet, and the second magnet fixing block contains a second magnet. The polarities of the first magnet and the second magnet are repulsive.

[0008] Furthermore, the first magnet fixing block and the second magnet fixing block are slidably connected to the threaded rod, and the push block is fixedly connected to the threaded rod.

[0009] Furthermore, the reset assembly includes a push block bearing disposed on the push block, an arc-shaped push rod abutting against the push block bearing, a push rod bearing disposed at the end of the arc-shaped push rod, and a limiting seat connected to the push rod bearing. The arc-shaped push rod is disposed between the push block and the metering plate, and the other end of the arc-shaped push rod is rotatably connected to the frame.

[0010] Furthermore, The frame is equipped with a push rod seat, the arc-shaped push rod is rotatably connected to the push rod seat, and the first magnet fixing block is fixedly connected to the push rod seat; The limiting seat is connected to a power mechanism, and the limiting seat reciprocates with the power mechanism.

[0011] Furthermore, the limiting component includes a flexible steel wire shaft and flexible shaft connecting blocks at both ends of the flexible steel wire shaft, with the two flexible shaft connecting blocks respectively threaded to the ends of the two threaded rods.

[0012] Furthermore, the flexible shaft connecting block is made of magnetic material; A positive clamp is also fitted on the threaded rod, and a guide rod is provided on the metering plate. The positive clamp is fitted on the guide rod and is fixedly connected to the frame.

[0013] Furthermore, any of the aforementioned metering plates is also equipped with a pressure detection component for detecting the liquid filling volume; The pressure detection component is a pressure sensor, which is located on the same side of the metering plate as the threaded rod, and is used to detect the pressure on the metering plate.

[0014] Instructions for using the magnetically driven quantitative plate mechanism in aseptic carton filling equipment: (1) The two quantitative plates are close to each other and clamp the sides of the cardboard box wall. A cardboard box filled with liquid material and sealed at the bottom but not at the top is conveyed between two metering plates. The magnetic drive component generates a repulsive force, which pushes the two metering plates closer to each other through the threaded rod. This causes the metering plates to press against the side wall of the cardboard box, keeping it vertical and squeezing excess material into the upper cardboard box. This ensures that the cardboard box is not filled with too much liquid material. At the same time, the limiting component limits the movement distance of the metering plates, ensuring that the metering plates do not excessively compress the cardboard box. (2) The two metering plates are far apart from each other when releasing the paper box. After the top of the cardboard box is sealed, the reset component pushes the threaded rod to move the two metering plates away from each other, releasing the cardboard box and cutting off the top of the cardboard box, completing one action. The next cardboard box moves between the two metering plates, and the above actions are repeated to achieve cyclic production. (3) Pressure detection component detects filling volume When the two metering plates press against the side wall of the carton, the pressure on the metering plates is detected by the pressure detection component to obtain the material liquid level height, which is used to determine whether the filling volume is normal and can be adjusted in time. (4) Adjust the limiting components to suit different types of cardboard boxes. Rotate the flexible shaft connecting block to synchronously adjust the distance between the two flexible shaft connecting blocks and the first magnet fixing block that is close to them, thereby adjusting the moving distance of the two quantitative plates when they approach each other, adapting to the clamping of paper boxes of different sizes.

[0015] Furthermore, The specific steps of (1) include: A cardboard box filled with liquid material, with its bottom sealed and its top unsealed, is conveyed between two metering plates. Due to the repulsive force between the first magnet in the first magnet fixing block and the second magnet in the second magnet fixing block, the second magnet fixing block slides away from the first magnet fixing block, thereby pushing the push block fixed on the threaded rod to move, bringing the two metering plates closer together. The metering plates press against the side wall of the cardboard box to keep it vertical, squeezing excess material into the upper cardboard box, ensuring that the cardboard box is not filled with excessive liquid material. Since the flexible shaft connecting block is located at the end of the threaded rod, it moves along with the threaded rod. The flexible shaft connecting block is made of magnetic material, which can maintain the repulsive force between the first magnet and the second magnet during the movement. When the flexible shaft connecting block moves to contact the first magnet fixing block, it cannot move further, limiting the continued movement of the metering plate and ensuring that the metering plate does not excessively compress the cardboard box. Alternatively, the specific steps of (2) include: After the top of the cardboard box is sealed, the power mechanism drives the limit seat to move away from the metering plate. The push rod bearing at the lower end of the arc-shaped push rod moves accordingly, and the arc-shaped push rod rotates. When the arc-shaped push rod contacts the push block bearing on the push block, the push rod pushes the push block bearing to drive the threaded rod to move, so that the second magnet fixing block moves closer to the first magnet fixing block, and the flexible shaft connecting block moves away from the first magnet fixing block. The two metering plates move away from each other, releasing the cardboard box. The top of the cardboard box is cut off, completing one action. The next cardboard box moves between the two metering plates, and the above actions are repeated to achieve cyclic production.

[0016] The beneficial technical effects of this invention are as follows: This invention effectively simplifies the adjustment process of the quantitative plate mechanism, allowing for quick adaptation to different paper box specifications without disassembling a large number of frame components; it ensures consistent position of the quantitative plates on both sides by synchronously adjusting the limiting components, significantly improving the accuracy of the filling volume; and it eliminates the easily worn linkage transmission structure, significantly enhancing the stability of equipment operation, extending the service life of the entire machine, and reducing subsequent maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is an enlarged schematic diagram of part A in an embodiment of the present invention; Figure 3 This is a schematic diagram of the quantitative plate according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the quantitative plate in the open state according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the quantitative plate in the closed state according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the lower horizontal sealing plate in an existing aseptic carton filling device. Figure 7 This is a schematic diagram of the quantitative plate mechanism in the prior art.

[0018] 1. Measuring plate, 2. Threaded rod, 3. Guide rod, 4. Positive clamp, 5. First magnet fixing block, 6. Second magnet fixing block, 7. Push block, 8. Push rod seat, 9. Push block bearing, 10. Arc-shaped push rod, 11. Push rod bearing, 12. Limiting seat, 13. Flexible steel wire shaft, 14. Flexible shaft connecting block, 15. Flexible shaft sheath, 16. Flexible shaft fixing block, 17. Flexible shaft fixing bracket, 18. Pressure sensor, 202. Lower horizontal sealing plate. Detailed Implementation

[0019] The specific implementation method will be further described below with reference to the accompanying drawings. Example 1

[0020] like Figure 1-5As shown, the magnetically driven metering plate mechanism 1 for aseptic carton filling equipment includes two opposing metering plates 1, and threaded rods 2 on opposite sides of the two metering plates 1. The threaded rods 2 are perpendicularly fixed to the metering plates 1. A limit assembly is connected between the two threaded rods 2 to limit the movement distance of the metering plates 1 and ensure that the movement distance of the two metering plates 1 is the same. A magnetic drive assembly is also provided on the threaded rod 2 between each metering plate 1 and the limit assembly to drive the relative movement of the two metering plates 1. A reset assembly is connected to the magnetic drive assembly to push the two metering plates 1 away from each other. A positive clamp 4 is also sleeved on the threaded rod 2. A guide rod 3 is provided on the metering plate 1. The positive clamp 4 is sleeved on the guide rod 3 and is fixedly connected to the frame. The guide rod 3 is used to ensure that the metering plates 1 do not rotate.

[0021] The magnetic drive assembly includes a first magnet fixing block 5, a second magnet fixing block 6, and a push block 7 sequentially sleeved on the threaded rod 2, wherein the push block 7 is closest to the metering plate 1. The first magnet fixing block 5 contains a first magnet, and the second magnet fixing block 6 contains a second magnet. The polarities of the first and second magnets are opposite. The first magnet fixing block 5 and the second magnet fixing block 6 are slidably connected to the threaded rod 2, and the push block is fixedly connected to the threaded rod 2. A push rod seat 8 is provided on the frame, and the first magnet fixing block 5 is fixedly connected to the push rod seat 8. The reset assembly includes a push block bearing 9 mounted on the push block 7, an arc-shaped push rod 10 abutting against the push block bearing 9, a push rod bearing 11 located at the end of the arc-shaped push rod 10, and a limiting seat 12 connected to the push rod bearing 11. The arc-shaped push rod 10 is located between the push block 7 and the metering plate 1. One end of the arc-shaped push rod 10 is rotatably connected to the frame, and the other end is rotatably connected to the push rod seat 8. A power mechanism is connected to the limiting seat 12, and the limiting seat 12 reciprocates with the power mechanism.

[0022] The limiting assembly includes a flexible steel shaft 13 and flexible shaft connecting blocks 14 at both ends of the flexible steel shaft 13. The two flexible shaft connecting blocks 14 are threadedly connected to the ends of two threaded rods 2, respectively. The flexible shaft connecting blocks 14 are made of magnetic material; the distance between the flexible shaft connecting blocks 14 and the first magnet fixing block 5 is adjustable, and this distance is the moving distance of the metering plate 1. The flexible steel shaft 13 is provided with a flexible shaft sleeve 15 and a flexible shaft fixing block 16, and the flexible steel shaft 13 is fixed by a flexible shaft fixing bracket 17. Since the flexible steel shaft 13 itself has torque, during adjustment, the torque of the flexible steel shaft 13 can be released as needed, so that the distance between the two ends of the flexible steel shaft 13 and the first magnet fixing block 5 can be adjusted synchronously.

[0023] Each of the metering plates 1 is further provided with a pressure detection component for detecting the liquid filling volume; the pressure detection component is a pressure sensor 18, which is located on the same side of the metering plate 1 as the threaded rod 2, and is used to detect the pressure on the metering plate 1, thereby obtaining the liquid height in the carton and detecting the filling volume in real time.

[0024] When the two metering plates 1 are moving away from each other, the power mechanism pushes the limiting seat 12 to move outward, causing the arc-shaped push rod 10 to rotate. Initially, the arc-shaped push rod 10 does not contact the push block bearing 9 on the push block 7. After rotating a certain distance, the arc-shaped push rod 10 contacts the push block bearing 9, thereby pushing the push block 7 to move the metering plate 1. The two metering plates 1 move away from each other until the first magnet fixing block 5 and the second magnet fixing block 6 are in contact, and the pushing force of the power mechanism is much greater than the repulsive force of the first magnet and the second magnet. When the two metering plates 1 are close to each other, the power mechanism pulls the limiting seat 12 to move inward. At this time, the arc-shaped push rod 10 rotates, but it cannot push the push block 7 to move, and cannot move the metering plate 1. At this time, the magnetic drive assembly is needed to drive the metering plate 1. The repulsive force between the first magnet fixing block 5 and the second magnet fixing block 6, which are in contact with each other, pushes the first magnet fixing block 5 and the second magnet fixing block 6 away from each other. The second magnet fixing block 6 pushes the push block 7 to move the metering plate 1 closer to each other. The flexible shaft connecting block 14 also moves along with it. The magnetism of the flexible shaft connecting block 14 can compensate for the magnetic loss that occurs when the first magnet and the second magnet move away from each other. When the flexible shaft connecting block 14 comes into contact with the first magnet fixing block 5, it cannot move further. The metering plate 1 moves to its limit. At this time, the push block bearing 9 and the arc-shaped push rod 10 do not come into contact. Therefore, by adjusting the distance between the flexible shaft connecting block 14 and the first magnet fixing block 5, the moving distance of the metering plate 1 can be adjusted, which is suitable for metering different specifications of paper boxes.

[0025] Instructions for using the magnetically driven quantitative plate mechanism 1 in aseptic carton filling equipment: (1) The two quantitative plates 1 are close to each other and clamp the two sides of the cardboard box wall. A cardboard box filled with liquid material, with its bottom sealed and its top unsealed, is conveyed between two metering plates 1. Due to the repulsive force between the first magnet in the first magnet fixing block 5 and the second magnet in the second magnet fixing block 6, the second magnet fixing block 6 slides away from the first magnet fixing block 5, thereby pushing the push block 7 fixed on the threaded rod 2 to move, so that the two metering plates 1 move closer to each other. The metering plates 1 press against the side wall of the cardboard box to keep it vertical, squeezing the excess material into the upper cardboard box, ensuring that the cardboard box is not filled with too much liquid material. Since the flexible shaft connecting block 14 is located at the end of the threaded rod 2, the flexible shaft connecting block 14 moves with the threaded rod 2. The flexible shaft connecting block 14 is made of magnetic material, which can maintain the repulsive force between the first magnet and the second magnet during the movement. When the flexible shaft connecting block 14 moves to contact the first magnet fixing block 5, it cannot continue to move, restricting the continued movement of the metering plate 1 and ensuring that the metering plate 1 does not excessively squeeze the cardboard box. (2) The two metering plates 1 are far apart from each other when releasing the paper box. After the top of the cardboard box is sealed, the power mechanism drives the limit seat 12 to move away from the metering plate 1. The push rod bearing 11 at the lower end of the arc-shaped push rod 10 moves accordingly, and the arc-shaped push rod 10 rotates. When the arc-shaped push rod 10 contacts the push block bearing 9 on the push block 7, the arc-shaped push rod 10 pushes the push block bearing 9 to drive the threaded rod 2 to move, so that the second magnet fixing block 6 moves closer to the first magnet fixing block 5, and the flexible shaft connecting block 14 moves away from the first magnet fixing block 5. The two metering plates 1 move away from each other, the cardboard box is released, and the top of the cardboard box is cut off, completing one action. The next cardboard box moves between the two metering plates 1, and the above actions are repeated to achieve cyclic production.

[0026] (3) Pressure detection component detects filling volume When the two metering plates 1 press against the side wall of the carton, the pressure on the metering plate 1 is detected by the pressure detection component to obtain the material liquid level height, which is used to determine whether the filling volume is normal and can be adjusted in time. (4) Adjust the limiting components to suit different types of cardboard boxes. Rotate the flexible shaft connecting block 14 to synchronously adjust the distance between the two flexible shaft connecting blocks 14 and the first magnet fixing block 5 that is close to them, thereby adjusting the moving distance of the two quantitative plates 1 when they approach each other, so as to adapt to the clamping of paper boxes of different sizes.

[0027] The two opposite sides of the cardboard box are supported by the magnetically driven quantitative plate mechanism of this application, and the other two opposite sides are supported by the clamping plate driven by the cylinder.

[0028] Figure 6 The diagram shows the structure of the pre-filled plate 1 mechanism in the prior art. This structure uses a linkage action, which is prone to damage. Furthermore, the distance between the two pre-filled plates 1 is difficult to adjust, making it unsuitable for filling production of various sizes of paper boxes. Example 2

[0029] The similarities between this application and Embodiment 1 will not be repeated here; the differences are as follows: The power mechanism can be driven by the power mechanism of other components, without the need for additional settings. Figure 7 As shown, for example, the limiting seat 12 is fixed to the lower horizontal sealing plate 202 of the frame, and the movement of the lower horizontal sealing plate 202 drives the limiting seat 12 to move.

[0030] The above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made based on the essence of the content of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A magnetically driven metering plate mechanism for aseptic carton filling equipment, characterized in that: It includes two quantitative plates arranged opposite each other, threaded rods on opposite sides of the two quantitative plates, a limit assembly connecting the two threaded rods, a magnetic drive assembly on the threaded rod between each quantitative plate and the limit assembly, and a reset assembly connected to the magnetic drive assembly.

2. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 1, characterized in that: The magnetic drive assembly includes a first magnet fixing block, a second magnet fixing block, and a push block sequentially sleeved on the threaded rod. The first magnet fixing block contains a first magnet, and the second magnet fixing block contains a second magnet. The polarities of the first magnet and the second magnet are repulsive.

3. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 2, characterized in that: The first magnet fixing block and the second magnet fixing block are slidably connected to the threaded rod, and the push block is fixedly connected to the threaded rod.

4. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 2, characterized in that: The reset assembly includes a push block bearing on the push block, an arc-shaped push rod abutting against the push block bearing, a push rod bearing at the end of the arc-shaped push rod, and a limiting seat connected to the push rod bearing. The arc-shaped push rod is located between the push block and the metering plate, and the other end of the arc-shaped push rod is rotatably connected to the frame.

5. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 4, characterized in that: The frame is equipped with a push rod seat, the arc-shaped push rod is rotatably connected to the push rod seat, and the first magnet fixing block is fixedly connected to the push rod seat; The limiting seat is connected to a power mechanism, and the limiting seat reciprocates with the power mechanism.

6. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 1, characterized in that: The limiting component includes a flexible steel wire shaft and flexible shaft connecting blocks at both ends of the flexible steel wire shaft. The two flexible shaft connecting blocks are respectively threaded to the ends of two threaded rods.

7. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 6, characterized in that: The flexible shaft connecting block is made of magnetic material; A positive clamp is also fitted on the threaded rod, and a guide rod is provided on the metering plate. The positive clamp is fitted on the guide rod and is fixedly connected to the frame.

8. The magnetically driven metering plate mechanism for aseptic carton filling equipment according to claim 1, characterized in that: Any of the aforementioned metering plates is further provided with a pressure detection component for detecting the liquid filling volume; The pressure detection component is a pressure sensor, which is located on the same side of the metering plate as the threaded rod, and is used to detect the pressure on the metering plate.

9. The method of using the magnetically driven metering plate mechanism for aseptic carton filling equipment according to any one of claims 1-8, characterized in that: (1) The two quantitative plates are close to each other and clamp the sides of the cardboard box wall. A cardboard box filled with liquid material and sealed at the bottom but not at the top is conveyed between two metering plates. The magnetic drive component generates a repulsive force, which pushes the two metering plates closer to each other through the threaded rod. This causes the metering plates to press against the side wall of the cardboard box, keeping it vertical and squeezing excess material into the upper cardboard box. This ensures that the cardboard box is not filled with too much liquid material. At the same time, the limiting component limits the movement distance of the metering plates, ensuring that the metering plates do not excessively compress the cardboard box. (2) The two metering plates are far apart from each other when releasing the paper box. After the top of the cardboard box is sealed, the reset component pushes the threaded rod to move the two metering plates away from each other, releasing the cardboard box and cutting off the top of the cardboard box, completing one action. The next cardboard box moves between the two metering plates, and the above actions are repeated to achieve cyclic production. (3) Pressure detection component detects filling volume When the two metering plates press against the side wall of the carton, the pressure on the metering plates is detected by the pressure detection component to obtain the material liquid level height, which is used to determine whether the filling volume is normal and can be adjusted in time. (4) Adjust the limiting components to suit different types of cardboard boxes. Rotate the flexible shaft connecting block to synchronously adjust the distance between the two flexible shaft connecting blocks and the first magnet fixing block that is close to them, thereby adjusting the moving distance of the two quantitative plates when they approach each other, adapting to the clamping of paper boxes of different sizes.

10. The method of using the magnetically driven quantitative plate mechanism for aseptic carton filling equipment according to claim 9, characterized in that: The specific steps of (1) include: A cardboard box filled with liquid material, with its bottom sealed and its top unsealed, is conveyed between two metering plates. Due to the repulsive force between the first magnet in the first magnet fixing block and the second magnet in the second magnet fixing block, the second magnet fixing block slides away from the first magnet fixing block, thereby pushing the push block fixed on the threaded rod to move, bringing the two metering plates closer together. The metering plates press against the side wall of the cardboard box to keep it vertical, squeezing excess material into the upper cardboard box, ensuring that the cardboard box is not filled with excessive liquid material. Since the flexible shaft connecting block is located at the end of the threaded rod, it moves along with the threaded rod. The flexible shaft connecting block is made of magnetic material, which can maintain the repulsive force between the first magnet and the second magnet during the movement. When the flexible shaft connecting block moves to contact the first magnet fixing block, it cannot move further, limiting the continued movement of the metering plate and ensuring that the metering plate does not excessively compress the cardboard box. Alternatively, the specific steps of (2) include: After the top of the cardboard box is sealed, the power mechanism drives the limit seat to move away from the metering plate. The push rod bearing at the lower end of the arc-shaped push rod moves accordingly, and the arc-shaped push rod rotates. When the arc-shaped push rod contacts the push block bearing on the push block, the arc-shaped push rod pushes the push block bearing to drive the threaded rod to move, so that the second magnet fixing block moves closer to the first magnet fixing block, the flexible shaft connecting block moves away from the first magnet fixing block, the two metering plates move away from each other, the cardboard box is released, the top of the cardboard box is cut off, and one action is completed. The next cardboard box moves between the two metering plates, and the above actions are repeated to achieve cyclic production.

Images