A carton inspection machine and its usage method

Abstract

This invention provides a carton inspection machine and its usage method, including a mounting base, a pressure cylinder, a guide side plate, a pressure drive plate, a pressure plate, and a pressure sensor. The driving end of the pressure cylinder is connected to the pressure drive plate via a hinge, and the pressure plate is installed on the bottom side of the pressure drive plate away from the pressure cylinder. The pressure cylinder can drive the pressure drive plate and the pressure plate to rise linearly and then flip to the side, thereby facilitating the observation and maintenance of the pressure plate. At least two sets of connecting columns are fixed on the top side of the pressure plate. A guide hole is opened on the pressure drive plate, and the top of the connecting column passes through the guide hole and is locked and fixed to the pressure drive plate by a locking nut. A pressure sensor is embedded and installed on the bottom side of the pressure plate. This invention not only facilitates installation and subsequent observation and maintenance, but also improves the pressure accuracy.

Description

Technical Field

[0001] This invention relates to an inspection machine, and more particularly to a carton inspection machine and its method of use. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. Depending on the materials used, there are corrugated cardboard boxes, single-layer cardboard boxes, etc. The most important function of cardboard boxes is to provide good protection, and compressive strength is a comprehensive reflection of this protective performance and is the most basic property of cardboard boxes. In recent years, many factories have gradually moved from judging the quality of cardboard boxes by touch to using various instruments to test and analyze their physical properties. Many manufacturers have also equipped themselves with various compression testing devices to test the compressive strength of cardboard boxes and have made compressive strength the most important indicator for quality acceptance. However, existing cardboard box inspection machines are generally time-consuming and labor-intensive to install and maintain. Furthermore, to achieve smooth disassembly and installation, the mounting holes must be designed to be slightly larger, inevitably resulting in connection gaps. Therefore, during the actual use of the inspection machine, due to these connection gaps, uneven pressure inevitably occurs during the pressure test, thus affecting the inspection effect and reducing the accuracy of the inspection results.

[0003] Therefore, there is an urgent need for a carton inspection machine and its usage method that not only facilitates easy installation and subsequent observation and maintenance, but also ensures quick disassembly and replacement while ensuring that the connection gap can still be flexibly reduced to a reasonable range after reconnection, thereby avoiding the phenomenon of uneven pressure caused by excessive connection gap. Summary of the Invention

[0004] The purpose of this invention is to provide a carton inspection machine and its usage method, which not only enables convenient installation and subsequent observation and maintenance, but also ensures quick disassembly and replacement while ensuring that the connection gap can still be flexibly reduced to a reasonable range after reconnection, thereby avoiding the phenomenon of uneven pressure caused by excessive connection gap.

[0005] This invention provides the following technical solution:

[0006] A carton inspection machine and its method of use include a testing table and a pressure applying mechanism. A support fixture corresponding to the pressure applying mechanism is positioned on the testing table, and a carton to be inspected is positioned on the support fixture. A support column is fixed to one side of the testing table, and a support frame corresponding to the top of the support column is fixed to the top of the support column. The pressure applying mechanism is mounted on the support frame. The pressure applying mechanism includes a mounting base, a pressure cylinder, guide side plates, a pressure driving plate, a pressure plate, and a pressure sensor. The mounting base is fixedly mounted on the support frame, and the pressure cylinder is hinged to it via two sets of hinged brackets. The driving end of the pressure cylinder is hinged to the pressure driving plate, and a pressure plate is mounted on the bottom side of the pressure driving plate away from the pressure cylinder. Two sets of guide side plates are fixed to the mounting base on both sides of the pressure driving plate, with linear guide rails mounted on one end of their opposing inner sides and track grooves opened on the other end. Two sets of linear rotating rods and two sets of right-angle rotating rods are rotatably connected to both sides of the pressure driving plate, with the tops of the two sets of linear rotating rods... Two sets of sliding blocks are fixed on the outer side, and shaft one is rotatably connected to their inner side; a set of shaft two is rotatably connected to the top of the two sets of right-angle rotating rods, and guide bearings for guiding the movement in the track groove are installed at both ends of shaft two. Two sets of auxiliary connecting rods are rotatably connected between shaft one and shaft two, and the two sets of auxiliary connecting rods are correspondingly arranged on the inner side of the two sets of right-angle rotating rods; the track groove includes a straight section and an arc section. The straight section is set parallel to the linear guide rail and is used to guide the movement when the pressure cylinder drives the pressure drive plate to descend and apply pressure. The arc section is connected between the straight section and the mounting base and is used to guide the rotation of shaft two around shaft one after the sliding block slides to the top of the linear guide rail; at least two sets of connecting columns are fixed on the top side of the pressure plate. A guide hole is opened on the pressure drive plate. After the top of the connecting column passes through the guide hole, it is locked and fixed to the pressure drive plate by a locking nut. A pressure sensor is embedded in the bottom side of the pressure plate. The pressure sensor is used to sense the pressure applied to the carton.

[0007] Preferably, multiple sets of pressure springs are provided between the pressure plate and the pressure driving plate, and the pressure springs are sleeved on the outside of the connecting column.

[0008] Preferably, the connecting column has a square cross-section and four sets of guide grooves are evenly provided on its four sides along the axial direction. The end of the connecting column is also provided with a locking end shaft that is threadedly engaged with the locking nut.

[0009] Preferably, four sets of expansion slots are provided on the four sides of the guide hole. A transverse guide block and a longitudinal guide block are arranged in the expansion slot. The longitudinal guide block is slidably connected in the expansion slot along the axial direction of the connecting column, and the transverse guide block is slidably connected in the expansion slot along the radial direction of the connecting column. An inclined sliding surface is provided on the side of the longitudinal guide block facing the connecting column, and a mating sliding surface that is slidably connected with the inclined sliding surface is provided on the side of the transverse guide block away from the connecting column. A threaded groove is provided on the side of the longitudinal guide block away from the connecting column. A rotating gear ring is built into the pressure driving plate. The inner gear ring of the rotating gear ring is threadedly connected to the four sets of threaded grooves in the longitudinal guide block, and its outer gear ring is driven by the external gear of a set of micro motors installed in the pressure driving plate.

[0010] Preferably, sliding strips are provided on both sides of the longitudinal guide block. The sliding strips are embedded in the sliding grooves in the expansion groove wall and can slide back and forth along the sliding grooves under the drive of the rotating gear ring.

[0011] Preferably, the expansion slot has two sets of outwardly protruding sliders at the opening, and the transverse guide block has sliding grooves on both sides that are slidably connected to the outside of the sliders. The transverse guide block can be extended into the guide groove of the connecting column under the drive of the longitudinal guide block.

[0012] Preferably, an auxiliary coupling is rotatably connected at the corner between the two sets of right-angle rotating rods.

[0013] The above-mentioned method for using a carton inspection machine includes the following steps:

[0014] S1: Position the carton to be inspected onto the support fixture of the corresponding size, install a pressure plate of the corresponding size on the pressure drive plate, and position the support fixture below the working area of ​​the corresponding pressure mechanism;

[0015] S2: Start the pressure cylinder. The pressure cylinder drives the pressure drive plate and the pressure plate to descend. The pressure plate is kept horizontal under the action of the linear track groove and the linear guide rail until the pressure plate presses against the carton below. The pressure sensor on the pressure plate is located between the pressure plate and the carton. It is used to sense the pressure applied by the pressure plate to the carton. The pressure sensor transmits the pressure value of the carton to the force value display. When the pressure bearing capacity of the carton reaches the maximum, the pressure cylinder is de-energized and stops descending.

[0016] S3: After the test is completed, the pressure cylinder drives the pressure drive plate and the pressure plate to rise along the linear guide rail. After rising to the top of the linear guide rail, the pressure drive plate is continuously driven. Under the action of the arc segment track groove, the pressure drive plate will drive the pressure plate to flip, so that the pressure sensor faces to the side.

[0017] Preferably, when it is necessary to maintain or replace the pressure plate and the pressure sensor on the pressure plate, or when it is necessary to reinstall the disassembled and stored pressure plate, the pressure plate is pre-aligned and placed on the support fixture with the connecting column facing upwards. The pressure cylinder drives the pressure drive plate to descend until the connecting column passes through the pressure drive plate. Then, the locking nut is used to lock it outside the locking end shaft of the connecting column. Then, the micro motor is started to rotate the rotating gear ring to drive the four sets of longitudinal guide blocks to move upwards and the transverse guide blocks to move radially towards the center of the guide hole until they are inserted into the four sets of guide grooves of the connecting column. This ensures that the connecting column can be easily connected and also eliminates the play during subsequent movement, ensuring that the connecting column moves in a straight line.

[0018] The beneficial effects of this invention are:

[0019] 1. By setting the pressure plate of the pressure application mechanism to move in an arc and then in a straight line with the pressure application drive plate, it can be ensured that after the pressure contact is made and the pressure plate is driven to rise by the pressure cylinder, the bottom side of the pressure plate can be flipped to one side, which facilitates the observation and maintenance of the pressure plate.

[0020] 2. In order to facilitate the removal and storage of the pressure plate and pressure sensor from the pressure drive plate, or for maintenance and replacement, a connecting post is provided to cooperate with the guide hole on the pressure drive plate, and the pressure plate is fixedly connected to the pressure drive plate by a lock nut.

[0021] 3. To ensure elastic collision between the pressure plate and the carton during pressure application, reducing the damage rate of the pressure plate and pressure sensor, a pressure spring can be installed around the connecting column to press against the pressure plate and the pressure driving plate. Since the guide hole is generally larger than the connecting column to allow for quick and smooth insertion, this invention eliminates the gap by using a transverse guide block driven by a rotating gear ring and a longitudinal guide block. After the connecting column is inserted into place, a micro motor is activated to drive the guide column into the guide groove of the connecting column. This flexibly reduces the movement gap of the movable connecting column and improves the pressure application accuracy. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is an exploded schematic diagram of the pressure application mechanism of the present invention;

[0024] Figure 2 This is the front view of the testing station;

[0025] Figure 3 yes Figure 2 Side view;

[0026] Figure 4 This is a schematic diagram of the structure between the pressure drive plate and the pressure plate;

[0027] Figure 5 This is a partial schematic diagram of the pressure application mechanism in Example 2;

[0028] Figure 6 This is a schematic diagram of the structure between the pressure driving plate and the pressure plate in Example 3;

[0029] Figure 7 This is a front sectional view of the connection between the connecting column and the guide hole in Embodiment 3;

[0030] Figure 8This is a top cross-sectional view of the connection between the connecting column and the guide hole in Embodiment 3;

[0031] The markings in the diagram are as follows: 1 is the testing platform, 2 is the supporting fixture, 3 is the supporting column, 4 is the supporting frame, 5 is the mounting base, 6 is the pressure cylinder, 7 is the guide side plate, 8 is the pressure drive plate, 9 is the pressure plate, 10 is the linear guide rail, 11 is the track groove, 12 is the linear rotating rod, 13 is the right-angle rotating rod, 14 is the sliding block, 15 is shaft one, 16 is shaft two, 17 is the guide bearing, 18 is the auxiliary connecting rod, 19 is the connecting column, 20 is the guide hole, 21 is the locking nut, 22 is the auxiliary connecting shaft, 23 is the pressure spring, 24 is the locking end shaft, 25 is the expansion groove, 26 is the transverse guide block, 27 is the longitudinal guide block, 28 is the rotating gear ring, 29 is the micro motor, 30 is the external gear, 31 is the sliding bar, 32 is the sliding groove, 33 is the slider, 34 is the sliding groove, and 35 is the guide groove. Detailed Implementation

[0032] Example 1

[0033] Combination Figures 1 to 4The carton inspection machine shown in this embodiment includes a testing table 1 and a pressure applying mechanism. A support fixture 2 is positioned on the testing table 1, corresponding to the pressure applying mechanism below it. A carton to be inspected is positioned on the support fixture 2. A support column 3 is fixed to one side of the testing table 1, and a support frame 4 corresponding to the top of the support column 3 is fixed to the top of the support frame 4 above the testing table 1. The pressure applying mechanism is mounted on the support frame 4. The pressure applying mechanism includes a mounting base 5, a pressure cylinder 6, a guide side plate 7, a pressure drive plate 8, a pressure plate 9, and a pressure sensor. The mounting base 5 is fixedly mounted on the support frame 4, and two sets of... A pressure cylinder 6 is hingedly fixed to the hinge bracket. The driving end of the pressure cylinder 6 is connected to a pressure driving plate 8 via a hinge. A pressure plate 9 is installed on the bottom side of the pressure driving plate 8 away from the pressure cylinder 6. Two sets of guide side plates 7 are fixed on the mounting base 5 on both sides of the pressure driving plate 8. A linear guide rail 10 is installed on one of their inner sides facing each other, and a track groove 11 is opened on the other side. Two sets of linear rotating rods 12 and two sets of right-angle rotating rods 13 are rotatably connected to both sides of the pressure driving plate 8. Two sets of sliding blocks 14 are fixed on the outer side of the top of the two sets of linear rotating rods 12, and a shaft 15 is rotatably connected to their inner side. Two sets of right-angle rotating rods 13 are rotatably connected to a second set of shafts 16. Guide bearings 17 are installed at both ends of the second set of shafts 16 to guide their movement within the track groove 11. Two sets of auxiliary connecting rods 18 are rotatably connected between the first set of shafts 15 and the second set of shafts 16, and are correspondingly arranged inside the two sets of right-angle rotating rods 13. The track groove 11 includes a straight section and an arc section. The straight section is parallel to the linear guide rail 10 and is used for guiding the movement when the pressure cylinder 6 drives the pressure drive plate 8 to descend and apply pressure. The arc section connects the straight section and the mounting base 5 and is used for guiding the movement of the sliding... After the moving block 14 slides to the top of the linear guide rail 10, the guide shaft 16 rotates around the shaft 15. At least two sets of connecting posts 19 are fixed on the top side of the pressure plate 9. The pressure driving plate 8 is provided with a guide hole 20. After the top of the connecting post 19 passes through the guide hole 20, it is locked and fixed on the pressure driving plate 8 by the locking nut 21. A pressure sensor is embedded in the bottom side of the pressure plate 9. The pressure sensor is used to sense the pressure applied to the carton. Since the technology of installing the pressure sensor on the pressure plate to sense the pressure is existing technology, it will not be described again.

[0034] Example 2

[0035] Combination Figure 5 The carton inspection machine shown in this embodiment is a further limitation based on embodiment 1. The difference from embodiment 1 is that, in order to further improve the activity stability of the two sets of right-angle rotating rods 13, an auxiliary connecting shaft 22 is rotatably connected at the corner between the two sets of right-angle rotating rods 13.

[0036] Example 3

[0037] Combination Figure 6-8The partial schematic diagram of the pressure applying mechanism of the present invention shown is a further limitation based on embodiment 2 in this embodiment. The difference from embodiment 2 is that multiple sets of pressure springs 23 are provided between the pressure plate 9 and the pressure driving plate 8, and the pressure springs 23 are sleeved on the outside of the connecting column 19.

[0038] The connecting column 19 has a square cross-section, and four sets of guide grooves are evenly provided on its four sides along the axial direction. The end of the connecting column 19 is also provided with a locking end shaft 24 that is threadedly engaged with the locking nut 21.

[0039] Four sets of expansion slots 25 are provided on the four sides of the guide hole 20. A transverse guide block 26 and a longitudinal guide block 27 are arranged in the expansion slot 25. The longitudinal guide block 27 is slidably connected to the expansion slot 25 along the axial direction of the connecting post 19. The transverse guide block 26 is slidably connected to the expansion slot 25 along the radial direction of the connecting post 19. An inclined sliding surface is provided on the side of the longitudinal guide block 27 facing the connecting post 19. A mating sliding surface that is slidably connected to the inclined sliding surface is provided on the side of the transverse guide block 26 away from the connecting post 19. A threaded groove is provided on the side of the longitudinal guide block 27 away from the connecting post 19. A rotating gear ring 28 is built into the pressure driving plate 8. The inner gear ring of the rotating gear ring 28 is threadedly connected to the four sets of threaded grooves in the longitudinal guide block 27. Its outer gear ring is driven by the outer gear 30 of a set of micro motors 29 installed in the pressure driving plate 8.

[0040] To avoid interference between the sliding connection structure of the longitudinal guide block and the transverse guide block when they slide in the expansion groove, sliding strips 31 are provided on both sides of the longitudinal guide block 27. The sliding strips 31 are embedded in the sliding grooves 32 in the groove wall of the expansion groove 25, and can slide back and forth along the sliding grooves 32 under the drive of the rotating gear ring 28.

[0041] The expansion slot 25 has two sets of outwardly protruding sliders 33 at the slot opening. The transverse guide block 26 has sliding grooves 34 on both sides that are slidably connected to the outside of the sliders 33. The transverse guide block 26 can be driven by the longitudinal guide block 27 to extend into the guide groove 35 of the connecting column 19 for a limited position.

[0042] Example 4

[0043] A method for using a carton inspection machine includes the following steps:

[0044] S1: Position the carton to be inspected onto the support fixture 2 of the corresponding size, install the pressure plate 9 of the corresponding size on the pressure drive plate 8, and position the support fixture 2 below the working area of ​​the corresponding pressure mechanism.

[0045] S2: Start the pressure cylinder 6. The pressure cylinder 6 drives the pressure drive plate 8 and the pressure plate 9 to descend. The pressure plate 9 is kept horizontal under the action of the straight section track groove 11 and the linear guide rail 10 until the pressure plate 9 presses against the carton below. The pressure sensor on the pressure plate 9 is located between the pressure plate 9 and the carton. It is used to sense the pressure applied to the carton by the pressure plate 9. The pressure sensor transmits the pressure value borne by the carton to the force value display. When the pressure bearing capacity of the carton reaches the maximum, the pressure cylinder 6 is de-energized and stops descending.

[0046] S3: After the test is completed, the pressure cylinder 6 drives the pressure drive plate 8 and the pressure plate 9 to rise along the linear guide rail 10. After rising to the top of the linear guide rail 10, the pressure drive plate 8 is continuously driven. Under the action of the arc segment track groove 11, the pressure drive plate 8 will drive the pressure plate 9 to flip, so that the pressure sensor faces to the side.

[0047] When it is necessary to maintain or replace the pressure plate 9 and the pressure sensor on the pressure plate 9, or when it is necessary to reinstall the disassembled and stored pressure plate 9, the pressure plate 9 is pre-aligned and placed on the support fixture 2 with the connecting column 19 facing upwards. The pressure cylinder 6 drives the pressure drive plate 8 to descend until the connecting column 19 passes through the pressure drive plate 8. Then, the locking nut 21 is used to lock it outside the locking end shaft of the connecting column 19. Then, the micro motor 29 is started to rotate the rotating gear ring 28 to drive the four sets of longitudinal guide blocks 27 to move upwards and the transverse guide blocks 26 to move radially towards the center of the guide hole 20 until they are inserted into the four sets of guide grooves of the connecting column 19. This ensures that the connecting column 19 can be connected easily, and also eliminates the activity gap during subsequent movement, ensuring that the connecting column 19 moves in a straight line.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A carton inspection machine, comprising an inspection table and a pressure applying mechanism, wherein a support fixture corresponding to the pressure applying mechanism is positioned on the inspection table, and a carton to be inspected is positioned on the support fixture, characterized in that, A support column is fixed on one side of the testing platform, and a support frame corresponding to the top of the support column is fixed on the top of the testing platform. The pressure applying mechanism is installed on the support frame. The pressure applying mechanism includes a mounting base, a pressure cylinder, a guide side plate, a pressure driving plate, a pressure plate, and a pressure sensor. The mounting base is fixedly mounted on the support frame, and the pressure cylinder is hingedly fixed on it through two sets of hinge brackets. The driving end of the pressure cylinder is connected to the pressure driving plate through a hinge. The pressure plate is mounted on the bottom side of the pressure driving plate away from the pressure cylinder. Two sets of guide side plates are fixed on the mounting base on both sides of the pressure drive plate. A linear guide rail is installed on one of their inner sides facing each other, and a track groove is opened on the other side. The pressure driving plate is rotatably connected to two sets of linear rotating rods and two sets of right-angle rotating rods on both sides. Two sets of sliding blocks are fixed to the outer side of the top of the two sets of linear rotating rods, and shaft one is rotatably connected to their inner side. The top ends of the two sets of right-angle rotating rods are rotatably connected to a second set of shafts. The two ends of the second set of shafts are equipped with guide bearings for guiding the movement in the track groove. The first set of shafts and the second set of shafts are rotatably connected to two sets of auxiliary connecting rods, which are correspondingly arranged on the inner side of the two sets of right-angle rotating rods. The track groove includes a straight segment and an arc segment. The straight segment is arranged parallel to the linear guide rail and is used to guide the engagement when the pressure cylinder drives the pressure drive plate to descend and apply pressure. The arc segment is connected between the straight segment and the mounting base and is used to guide the engagement of the second shaft around the first shaft after the sliding block slides to the top of the linear guide rail. At least two sets of connecting columns are fixed on the top side of the pressure plate. A guide hole is provided on the pressure driving plate. After the top of the connecting column passes through the guide hole, it is locked and fixed on the pressure driving plate by a locking nut. A pressure sensor is embedded in the bottom side of the pressure plate. The pressure sensor is used to sense the pressure applied to the carton.

2. A carton inspection machine according to claim 1, characterized in that, Multiple sets of pressure springs are provided between the pressure plate and the pressure driving plate, and the pressure springs are correspondingly sleeved on the outside of the connecting column.

3. A carton inspection machine according to claim 2, characterized in that, The connecting column has a square cross-section and four sets of guide grooves are evenly provided on its four sides along the axial direction. The end of the connecting column is also provided with a locking end shaft that is threadedly engaged with the locking nut.

4. A carton inspection machine according to claim 3, characterized in that, Four sets of expansion slots are provided on the four sides of the guide hole. A transverse guide block and a longitudinal guide block are arranged in the expansion slot. The longitudinal guide block is slidably connected to the expansion slot along the axial direction of the connecting column. The transverse guide block is slidably connected to the expansion slot along the radial direction of the connecting column. An inclined sliding surface is provided on the side of the longitudinal guide block facing the connecting column. A mating sliding surface that is slidably connected to the inclined sliding surface is provided on the side of the transverse guide block away from the connecting column. A threaded groove is provided on the side of the longitudinal guide block away from the connecting column. A rotating gear ring is built into the pressure driving plate. The inner gear ring of the rotating gear ring is threadedly connected to the four sets of threaded grooves in the longitudinal guide block. Its outer gear ring is driven by the external gear of a set of micro motors installed in the pressure driving plate.

5. A carton inspection machine according to claim 4, characterized in that, The longitudinal guide block is provided with sliding strips on both sides. The sliding strips are embedded in the sliding grooves in the expansion groove wall and can slide back and forth along the sliding grooves under the drive of the rotating gear ring.

6. A carton inspection machine according to claim 5, characterized in that, The expansion slot has two sets of outwardly protruding sliders at its opening. The transverse guide block has sliding grooves on both sides that are slidably connected to the outside of the sliders. The transverse guide block can be extended into the guide groove of the connecting column under the drive of the longitudinal guide block.

7. A carton inspection machine according to claim 1, characterized in that, An auxiliary coupling is also rotatably connected at the corner between the two sets of right-angle rotating rods.

8. A method of using a carton inspection machine, based on the carton inspection machine according to any one of claims 1-7, characterized in that, Includes the following steps: S1: Position the carton to be inspected onto the support fixture of the corresponding size, install a pressure plate of the corresponding size on the pressure drive plate, and position the support fixture below the working area of ​​the corresponding pressure mechanism; S2: Start the pressure cylinder. The pressure cylinder drives the pressure drive plate and the pressure plate to descend. The pressure plate is kept horizontal under the action of the linear track groove and the linear guide rail until the pressure plate presses against the carton below. The pressure sensor on the pressure plate is located between the pressure plate and the carton. It is used to sense the pressure applied by the pressure plate to the carton. The pressure sensor transmits the pressure value of the carton to the force value display. When the pressure bearing capacity of the carton reaches the maximum, the pressure cylinder is de-energized and stops descending. S3: After the test is completed, the pressure cylinder drives the pressure drive plate and the pressure plate to rise along the linear guide rail. After rising to the top of the linear guide rail, the pressure drive plate is continuously driven. Under the action of the arc segment track groove, the pressure drive plate will drive the pressure plate to flip, so that the pressure sensor faces to the side.

9. The method of using a carton inspection machine according to claim 8, characterized in that, When it is necessary to maintain or replace the pressure plate and the pressure sensor on the pressure plate, or when it is necessary to reinstall the disassembled and stored pressure plate, the pressure plate is pre-aligned and placed on the support fixture with the connecting column facing upwards. The pressure cylinder drives the pressure drive plate to descend until the connecting column passes through the pressure drive plate. Then, the locking nut is used to lock it outside the locking end shaft of the connecting column. Then, the micro motor is started to rotate the rotating gear ring to drive the four sets of longitudinal guide blocks to move upwards and the transverse guide blocks to move radially towards the center of the guide hole until they are inserted into the four sets of guide grooves of the connecting column. This ensures that the connecting column can be easily connected and also eliminates the play during subsequent movement, ensuring that the connecting column moves in a straight line.

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