A quality inspection machine for automatic inspection of packaging printing

Abstract

This utility model relates to the field of quality inspection machine technology, and discloses a quality inspection machine for automatic inspection of packaging printing. It includes multiple support legs and two fixed plates. Support plates are fixedly connected to adjacent sides of the multiple support legs. A conveyor belt is sleeved on the outside of the support plates. Inspection components are fixedly connected to the top of the support plates. A sorting mechanism is provided at the top of the support plates. An auxiliary feeding mechanism and a guiding mechanism are provided on adjacent sides of the two fixed plates. The auxiliary feeding mechanism includes two guide pillars, which are fixedly connected to adjacent sides of the two fixed plates. In this utility model, the quantity of material fed at one time is controlled, allowing cardboard to enter the conveyor belt one by one. This dual adjustment mechanism avoids material deviation or accumulation, and also prevents cardboard from being missed, providing a stable and orderly material input for quality inspection, significantly improving inspection accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of quality inspection machine technology, and in particular to a quality inspection machine for automatic inspection of packaging printing. Background Technology

[0002] With the increasing demands for production efficiency and product quality in the modern packaging and printing industry, the market urgently needs more efficient and accurate inspection methods. At the technical level, machine vision technology, with its high-precision cameras and advanced image processing algorithms, can quickly and accurately acquire and analyze packaging and printing box image information, and accurately identify minor defects and color deviations.

[0003] A search revealed that the Chinese announcement number is CN216860939U, which relates to an automatic inspection machine for packaging printing. The machine includes an inspection table, a back plate vertically mounted on the top edge of the inspection table, a top plate on top of the back plate, and a sliding rod mounted on the bottom surface of the top plate. This invention, through the coordinated use of a mounting plate, handle, negative pressure suction cup, sliding sleeve, sliding rod, and spring rope, facilitates the removal of packaging with missing print.

[0004] The aforementioned patent describes a process where "the operator holds the handle and pulls the spring rope to make the mounting plate move the negative pressure suction cup to contact the top surface of the packaging box. Then, the negative pressure suction cup is activated by the control button, which allows the negative pressure suction cup to adhere and fix the packaging box. Finally, the packaging box is lifted and placed into the collection box through the feeding port." While this allows for quick removal of any missed plastic boxes or cardboard, it lacks a stable feeding structure. Therefore, operating on missed plastic boxes or cardboard separately would still delay the quality inspection efficiency of the plastic boxes and cardboard. To address this issue, a quality inspection machine for automatic inspection of packaging printing is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an inspection machine for automatic inspection of packaging printing, aiming to improve the problem of missing plastic boxes and cardboard in the existing inspection machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An inspection machine for automatic inspection of packaging printing includes multiple support legs and two fixed plates. Support plates are fixedly connected to adjacent sides of the multiple support legs. A conveyor belt is sleeved on the outside of the support plates. Inspection components are fixedly connected to the top of the support plates. A sorting mechanism is provided at the top of the support plates. An auxiliary feeding mechanism is provided on adjacent sides of the two fixed plates. A guiding mechanism is provided on adjacent sides of the two fixed plates.

[0008] The auxiliary feeding mechanism includes two guide columns, which are externally fixedly connected to the two fixed plates on adjacent sides. A bottom slider and a top slider are slidably connected to the two guide columns. A threaded column is internally threaded to the bottom slider, and a control handle is externally fixedly connected to the threaded column. A fixed column is fixedly connected to the rear end of the top slider, and a limit plate is externally fixedly connected to the fixed column. An adjustment component is provided on the adjacent sides of the two fixed plates.

[0009] Through the above technical solution, a quality inspection machine system integrating material transfer, automatic detection, and precise sorting is constructed. The support legs and fixed plate stably support the equipment, the support plate is equipped with a conveyor belt to realize material transportation, the quality inspection component performs quality inspection, and the auxiliary feeding mechanism, sorting mechanism and guiding mechanism work together to efficiently complete the entire process of automated processing of packaging and printing products from feeding to sorting.

[0010] As a further description of the above technical solution:

[0011] The threaded column is externally slidably connected to the inside of the control handle, the outside of the top slider is in contact with the outside of the bottom slider, and the bottom ends of the two fixing plates are fixedly connected to the top of the support plate.

[0012] The above technical solution, which combines a control handle, a threaded column, a top slider, and a bottom slider, enables convenient adjustment of the position of the limiting plate. By turning the control handle, the operator can rotate the threaded column, which in turn drives the top slider and bottom slider to slide, precisely adapting to plastic boxes and cardboard of different widths. This ensures that the material is fixed in position on the conveyor belt, significantly improving the accuracy and stability of quality inspection.

[0013] As a further description of the above technical solution:

[0014] The adjustment assembly includes a fixed box 1, which is externally fixedly connected to one side of the two fixed plates. A limiting plate is slidably connected inside the fixed box 1. A transmission rod is rotatably connected to the top of the limiting plate. A rotating column is slidably connected to the top of the transmission rod. A control block is externally fixedly connected to the rotating column.

[0015] Through the above technical solution: the control block, rotating column, transmission rod and limiting plate in the adjustment component cooperate with each other. The operator can rotate the control block to drive the rotating column to rotate, and the transmission rod will drive the limiting plate to slide in the fixed box. This can accurately control the range of flow of the box plate, avoid the simultaneous conveying of multiple materials, ensure the orderly detection of the inspection components and improve the detection efficiency.

[0016] As a further description of the above technical solution:

[0017] The external thread of the rotating column is connected to the inside of the fixed plate, and the external sliding connection of the rotating column is connected to the inside of the fixed box.

[0018] The above technical solution, with its threaded connection between the rotating column and the fixed plate, and its sliding connection with the fixed box, ensures stable support when the rotating column rotates, and also ensures that it smoothly drives the transmission rod and the limiting plate, enabling the adjustment component to operate stably for a long time and continuously and accurately control the thickness and quantity of the feed.

[0019] As a further description of the above technical solution:

[0020] The sorting mechanism includes a back plate, the bottom end of which is fixedly connected to the top end of the support plate. A motor is fixedly connected to the outside of the back plate, a threaded rod is fixedly connected to the drive end of the motor, a sliding block is threadedly connected to the outside of the threaded rod, a cylinder is fixedly connected to the top end of the sliding block, a suction cup is fixedly connected to the drive end of the cylinder, and a collection box is fixedly connected to the outside of the support leg.

[0021] Through the above technical solution: the motor drives the threaded rod to rotate in the sorting mechanism, which drives the sliding block to move horizontally. In conjunction with the cylinder and suction cup, it can accurately grab the unqualified products determined by the inspection components and transfer them to the collection box. The whole structure realizes automated sorting, greatly reduces manual intervention, and significantly improves sorting efficiency and accuracy.

[0022] As a further description of the above technical solution:

[0023] The threaded rod is externally rotatably connected to the inside of the back plate, and the externally slidably connected to the inside of the back plate.

[0024] The above technical solutions—the rotational connection between the threaded rod and the back plate, and the sliding connection between the sliding block and the back plate—ensure that the threaded rod rotates smoothly and the sliding block moves smoothly, enabling the suction cup to be accurately positioned above the defective products, thus guaranteeing the accuracy and reliability of the sorting operation.

[0025] As a further description of the above technical solution:

[0026] The guiding mechanism includes a second fixed box, which is externally fixedly connected to one side of the two fixed plates. A second sliding block is slidably connected inside the second fixed box. A rotating wheel is rotatably connected to the bottom end of the second sliding block. A telescopic column is fixedly connected to the top end of the rotating wheel. A spring is sleeved on the outside of the telescopic column.

[0027] Through the above technical solution: the rotating wheel, sliding block 2, telescopic column and spring in the guiding mechanism form an adaptive adjustment structure. When the material thickness changes, the rotating wheel is forced to drive the sliding block 2 to squeeze the spring. The spring's reverse force causes the rotating wheel to automatically adjust the pressure on the material, ensuring that the material is transported smoothly on the conveyor belt and avoiding deviation or tilting.

[0028] As a further description of the above technical solution:

[0029] The top end of the telescopic column is fixedly connected to the inside of the second fixed box, the bottom end of the spring is fixedly connected to the top end of the second sliding block, and the top end of the spring is fixedly connected to the inside of the second fixed box.

[0030] Through the above technical solution, the fixed connection between the telescopic column and the spring allows the spring to act stably on the sliding block and the rotating wheel during compression and rebound, continuously providing stable pressure regulation capability for the guiding mechanism, ensuring that materials of different thicknesses maintain a stable posture during transmission, and helping the quality inspection process to operate efficiently.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, before quality inspection, the operator adjusts the spacing of the limiting plates by rotating the control lever to match the width of the plastic box, ensuring a fixed position during conveying. At the same time, the operator adjusts the height of the limiting plates by rotating the control block to precisely control the quantity of material fed at one time, allowing the cardboard to enter the conveyor belt one by one. This dual adjustment mechanism avoids material deviation or accumulation and also prevents cardboard from being missed, providing a stable and orderly material input for quality inspection and significantly improving the accuracy and efficiency of the inspection.

[0033] 2. In this utility model, during the transmission of the plastic box board, the rotating wheel automatically adjusts the pressure according to the thickness of the cardboard. When the cardboard is thicker, the rotating wheel is pressed and drives the sliding block to move upward, and the compressed spring generates a reverse thrust, causing the rotating wheel to press down on the cardboard. When the cardboard is thinner, the spring pushes the rotating wheel to move downward. Through the linkage between the spring and the rotating wheel, adaptive flattening of cardboard of different thicknesses is achieved, ensuring that it is transported smoothly on the conveyor belt and avoiding the impact of shaking on the detection.

[0034] 3. In this utility model, when the inspection component detects a defective plastic box, the motor drives the threaded rod to rotate, causing the sliding block to move and position the suction cup above the defective product. The cylinder drives the suction cup to pick up the cardboard, and the sliding block then moves it to the designated position. After the suction cup is released, the defective product falls into the collection box. The entire process automatically completes the identification, grasping, and sorting of defective products, greatly reducing manual operation and improving sorting efficiency and accuracy. Attached Figure Description

[0035] Figure 1This is a three-dimensional schematic diagram of an automatic inspection machine for packaging printing proposed in this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of the back plate of an automatic inspection machine for packaging printing proposed in this utility model;

[0037] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 4 This is a schematic diagram of the structure of a limiting plate for an automatic inspection machine used in packaging printing, as proposed in this utility model.

[0039] Legend:

[0040] 1. Support leg; 2. Conveyor belt; 3. Support plate; 4. Inspection component; 5. Sorting mechanism; 51. Back plate; 52. Motor; 53. Threaded rod; 54. Sliding block one; 55. Cylinder; 56. Suction cup; 57. Collection box; 6. Fixing plate; 7. Auxiliary feeding mechanism; 71. Guide column; 72. Bottom slider; 73. Threaded column; 74. Top slider; 75. Control handle; 76. Fixing column; 77. Limiting plate; 78. Adjustment component; 781. Fixing box one; 782. Limiting plate; 783. Transmission rod; 784. Rotating column; 785. Control block; 8. Guide mechanism; 81. Fixing box two; 82. Sliding block two; 83. Rotating wheel; 84. Telescopic column; 85. Spring. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of an automatic quality inspection machine for packaging printing, comprising multiple support legs 1 and two fixed plates 6. The multiple support legs 1 constitute the basic support structure of the quality inspection machine, ensuring the stability of the equipment during operation. Support plates 3 are fixedly connected to adjacent sides of the multiple support legs 1. A conveyor belt 2 is sleeved on the outside of the support plates 3, serving as a material transport carrier to continuously and smoothly transport plastic boxes and cardboard to various processing stages. A quality inspection component 4 is fixedly connected to the top of the support plates 3. The quality inspection component 4 is a key component for realizing product quality inspection, capable of accurately inspecting the plastic boxes and cardboard on the conveyor belt 2. The inspection system promptly detects printing defects, dimensional deviations, and other issues. A sorting mechanism 5 is installed at the top of the support plate 3. The sorting mechanism 5 can automatically sort out unqualified products detected by the inspection component 4, separating unqualified products from qualified products. Two fixed plates 6 serve as a frame support. An auxiliary feeding mechanism 7 is installed on the adjacent side of the two fixed plates 6. The auxiliary feeding mechanism 7 can assist in the orderly feeding of plastic boxes and cardboard, ensuring a stable and efficient feeding process. At the same time, a guiding mechanism 8 is also installed on the adjacent side of the two fixed plates 6. The guiding mechanism 8 can guide and limit the plastic boxes and cardboard during the transmission process, ensuring that they are transported smoothly along the predetermined path.

[0043] Specifically, during the operation of the inspection machine, the support leg 1 provides stable support for the entire machine, preventing equipment shaking from affecting the inspection accuracy. The conveyor belt 2 continuously rotates on the support plate 3, uniformly conveying the plastic box cardboard to the area below the inspection component 4. The inspection component 4 performs real-time scanning and inspection of the passing cardboard. Once printing defects or dimensional deviations are detected, a signal is immediately sent to the sorting mechanism 5. The sorting mechanism 5 then starts and sorts the unqualified products aside. At the same time, the auxiliary feeding mechanism 7 and the guiding mechanism 8 work together to maintain the orderly feeding and stable transmission of the cardboard, ensuring a smooth and efficient inspection process.

[0044] The auxiliary feeding mechanism 7 includes two guide pillars 71, which are vertically fixedly connected to adjacent sides of two fixed plates 6. A bottom slider 72 and a top slider 74 are slidably connected to the outside of the two guide pillars 71, allowing them to slide along the guide pillars 71 for position adjustment. A threaded post 73 is threadedly connected internally to the bottom slider 72; rotation of the threaded post 73 causes relative movement between the bottom slider 72 and the top slider 74. A control handle 75 is fixedly connected externally to the threaded post 73, allowing the operator to easily drive its rotation. A fixed post 76 is fixedly connected to the rear end of the top slider 74, and a limit plate 77 is fixedly connected externally to the fixed post 76 for mounting the limit plate 77. This allows for stable positioning of the plastic box cardboard. The positioning plate 77 can be adjusted according to the width of the plastic box cardboard to ensure that each plastic box cardboard remains in a fixed position during the conveying process, thereby improving the accuracy of quality inspection. An adjustment component 78 is provided on the adjacent side of the two fixing plates 6. The adjustment component 78 can precisely control the feeding thickness of the plastic box cardboard. The external sliding connection of the threaded column 73 is inside the control handle 75, ensuring that the control handle 75 can flexibly drive the threaded column 73 to rotate. The external contact of the top slider 74 and the external contact of the bottom slider 72 achieves the fixation of the position of the positioning plate 77. The bottom ends of the two fixing plates 6 are fixedly connected to the top of the support plate 3 to ensure that the auxiliary feeding mechanism 7 is stably connected to the overall equipment.

[0045] Specifically, when the auxiliary feeding mechanism 7 is in operation, the operator rotates the control handle 75, which drives the threaded column 73 to rotate, thereby causing the bottom slider 72 and the top slider 74 to slide along the guide column 71, precisely limiting the distance between the limit plates 77 to adapt to different widths of cardboard. Then, by rotating the control block 785, the rotating column 784 is driven to rotate, which drives the limiting plate 782 to slide up and down in the fixed box 781 via the transmission rod 783, adjusting the single feeding thickness, so that the cardboard passes through one by one and enters the conveyor belt 2 in an orderly manner, avoiding accumulation that interferes with the detection.

[0046] The adjusting assembly 78 includes a fixed box 781, which is fixedly connected to one side of two fixed plates 6. A limiting plate 782 is slidably connected inside the fixed box 781, and can slide up and down within the fixed box 781 to control the thickness of the plastic box / cardboard that can pass through. A transmission rod 783 is rotatably connected to the top of the limiting plate 782, and a rotating column 784 is slidably connected to the top of the transmission rod 783. The transmission rod 783 can convert the rotation of the rotating column 784 into the up and down sliding of the limiting plate 782, thereby achieving... The position of the limiting plate 782 is adjusted by a control block 785 fixedly connected to the outside of the rotating column 784. The operator can easily drive the rotating column 784 to rotate by rotating the control block 785, thereby accurately adjusting the position of the limiting plate 782. The external thread of the rotating column 784 is connected to the inside of the fixed plate 6 to ensure that the rotating column 784 remains stable when rotating. The external sliding connection of the rotating column 784 is connected to the inside of the fixed box 781, so that the rotating column 784 can rotate smoothly in the fixed box 781 and drive the transmission rod 783 to move.

[0047] Specifically, when the adjustment component 78 is working, the operator rotates the control block 785, and the rotating column 784 rotates synchronously within the fixed plate 6 and the fixed box 781. The rotational motion is converted into the up-and-down sliding of the limiting plate 782 through the transmission rod 783. The limiting plate 782 precisely controls the thickness of the cardboard, ensuring that only one cardboard is allowed to enter the conveyor belt 2 at a time, providing a stable inspection rhythm for the inspection component 4 and preventing multiple cardboard pieces from overlapping and causing inspection omissions.

[0048] The sorting mechanism 5 includes a back plate 51, which is fixedly connected to the top of the support plate 3. A motor 52 is fixedly connected to the outside of the back plate 51, and a threaded rod 53 is fixedly connected to the drive end of the motor 52. The motor 52 serves as the power source for the sorting mechanism 5, driving the threaded rod 53 to rotate and adjust the position of the suction cup 56. The threaded rod 53 rotates under the drive of the motor 52, driving the sliding block 54 to move through the threaded transmission. The sliding block 54 is threadedly connected to the outside of the threaded rod 53, and can slide along the back plate 51 under the rotation of the threaded rod 53 to adjust the horizontal position. A cylinder 55 is fixedly connected to the top of the sliding block 54, and the cylinder 55 can... The suction cup 56 moves up and down to adsorb and release defective plastic boxes and cardboard. The suction cup 56 is fixedly connected to the drive end of the cylinder 55. The suction cup 56, in cooperation with the cylinder 55, can adsorb defective plastic boxes and cardboard and move them to a designated position. A collection box 57 is fixedly connected to the outside of the support leg 1. The collection box 57 is used to collect the sorted defective plastic boxes and cardboard for convenient subsequent unified processing. The threaded rod 53 is externally rotatably connected to the inside of the back plate 51 to ensure that the threaded rod 53 can rotate stably. The sliding block 54 is externally slidably connected to the inside of the back plate 51, so that the sliding block 54 can slide smoothly within the back plate 51 to ensure the accuracy of the sorting operation.

[0049] Specifically, after receiving a non-conforming signal from the inspection component 4, the sorting mechanism 5 starts the motor 52 to drive the threaded rod 53 to rotate, causing the sliding block 54 to slide horizontally along the back plate 51, precisely moving the suction cup 56 above the non-conforming cardboard. Subsequently, the cylinder 55 drives the suction cup 56 to press down and adsorb the cardboard, and the sliding block 54 then moves it to the collection box 57. The cylinder 55 controls the suction cup 56 to release, completing the automatic sorting of non-conforming products. The entire process requires no manual intervention, making it highly efficient and accurate.

[0050] Reference Figures 1 to 3The guiding mechanism 8 includes a fixed box 81, which is fixedly connected to one side of two fixed plates 6. A sliding block 82 is slidably connected inside the fixed box 81. A rotating wheel 83 is rotatably connected to the bottom end of the sliding block 82. The sliding block 82 can slide up and down inside the fixed box 81 to transmit the pressure on the rotating wheel 83. The rotating wheel 83 is in direct contact with the plastic cardboard on the conveyor belt 2, rotating under friction and guiding and flattening the cardboard. A telescopic column 84 is fixedly connected to the top end of the rotating wheel 83. The outer sleeve of the telescopic column 84... A spring 85 is provided, which can automatically adjust the pressure on the rotating wheel 83 according to the thickness of the plastic box cardboard, ensuring that the cardboard remains stable during the transmission process. The top end of the telescopic column 84 is fixedly connected to the inside of the fixed box 81, ensuring that the telescopic column 84 can stably extend and retract within the fixed box 81. The bottom end of the spring 85 is fixedly connected to the top end of the sliding block 82, and the top end of the spring 85 is fixedly connected to the inside of the fixed box 81, so that the spring 85 can generate elastic force between the sliding block 82 and the fixed box 81, realizing the automatic adjustment of the pressure on the rotating wheel 83.

[0051] Specifically, when the guiding mechanism 8 is running, if the plastic cardboard on the conveyor belt 2 passes under the rotating wheel 83, and the cardboard is thick, it will compress the rotating wheel 83, causing it to move upward. This will cause the sliding block 82 to slide synchronously within the fixed box 81, compressing the spring 85. The elastic force generated by the spring 85 reacts to the rotating wheel 83 through the sliding block 82, applying appropriate pressure to the cardboard, flattening and guiding it. If the cardboard is thin, the spring 85 pushes the rotating wheel 83 downward, maintaining stable support and guidance for the cardboard, ensuring that the cardboard is smoothly transported to the inspection area.

[0052] Working principle: When processing personnel need to inspect a batch of plastic box boards, they first adjust the position of the limiting plate 77 according to the horizontal width of the plastic box board. By rotating the control handle 75, the threaded post 73 rotates inside the bottom slider 72, thereby causing the top slider 74 to release its tight contact with the bottom slider 72 as the threaded post 73 rotates. At this point, the bottom slider 72 can be slid as needed, thus adjusting the position of the limiting plate 77 until the two limiting plates 77 can adapt to the size of the plastic box board, ensuring the consistency of the position of each plastic box board during subsequent conveying. This improves the quality inspection effect. At the same time, the operator can adjust the position of the limiting plate 782 according to the thickness of the plastic box. By rotating the control block 785, the rotating column 784 rotates inside the fixed box 781, thereby causing the transmission rod 783 to drive the limiting plate 782 to slide inside the fixed box 781, so as to realize the position adjustment of the limiting plate 782. This ensures that only one plastic box is pulled by the conveyor belt 2 at a time and moves with the conveyor belt 2, achieving a stable feeding operation and ensuring that the inspection component 4 can stably inspect each plastic box.

[0053] When the plastic box is conveyed at the top of the conveyor belt 2, friction and pressure are generated between the plastic box and the rotating wheel 83. If the plastic box is thick, the rotating wheel 83 will be subjected to greater compressive force. The rotating wheel 83 will slide inside the fixed box 81 through the sliding block 82. At this time, the spring 85 will be compressed, thereby continuously pushing the sliding block 82, so that the thrust is applied to the rotating wheel 83, so that the rotating wheel 83 applies appropriate pressure to the plastic box, realizing the function of automatically adjusting the pressure according to the thickness of the plastic box, pressing the plastic box flat at the top of the conveyor belt 2, and ensuring that the plastic box can be stably conveyed at the top of the conveyor belt 2.

[0054] When the inspection component 4 detects a substandard plastic box, it can start the motor 52. The motor 52 will drive the threaded rod 53 to rotate inside the back plate 51, thereby causing the sliding block 54 to slide inside the back plate 51. This adjusts the suction cup 56 to the top of the substandard plastic box. Then, the cylinder 55 is activated, which will drive the suction cup 56 to adhere to the substandard plastic box. At this time, the sliding block 54 can move the substandard plastic box. After the substandard plastic box is moved to the designated position, the suction cup 56 releases its suction on the substandard plastic box, and the substandard plastic box will fall into the collection box 57 for collection, completing the automatic sorting operation.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A quality inspection machine for automatic inspection of packaging printing, comprising multiple support legs (1) and two fixing plates (6), characterized in that: A support plate (3) is fixedly connected to one side of each of the multiple support legs (1). A conveyor belt (2) is sleeved on the outside of the support plate (3). An inspection component (4) is fixedly connected to the top of the support plate (3). A sorting mechanism (5) is provided at the top of the support plate (3). An auxiliary feeding mechanism (7) is provided on one side of each of the two fixed plates (6). A guiding mechanism (8) is provided on one side of each of the two fixed plates (6). The auxiliary feeding mechanism (7) includes two guide columns (71). The two guide columns (71) are externally fixedly connected to the adjacent side of the two fixed plates (6). The two guide columns (71) are externally slidably connected to a bottom slider (72) and a top slider (74). The bottom slider (72) is internally threadedly connected to a threaded column (73). The threaded column (73) is externally fixedly connected to a control handle (75). The rear end of the top slider (74) is fixedly connected to a fixed column (76). The fixed column (76) is externally fixedly connected to a limit plate (77). An adjustment component (78) is provided on the adjacent side of the two fixed plates (6).

2. The product inspection machine for automatic detection of packaging printing according to claim 1, characterized in that: The threaded column (73) is slidably connected to the inside of the control handle (75), the outside of the top slider (74) is in contact with the outside of the bottom slider (72), and the bottom ends of the two fixing plates (6) are fixedly connected to the top of the support plate (3).

3. The product inspection machine for automatic detection of packaging printing according to claim 1, characterized in that: The adjustment assembly (78) includes a fixed box (781), which is externally fixedly connected to one side of the two fixed plates (6). A limiting plate (782) is slidably connected inside the fixed box (781). A transmission rod (783) is rotatably connected to the top of the limiting plate (782). A rotating column (784) is slidably connected to the top of the transmission rod (783). A control block (785) is fixedly connected to the outside of the rotating column (784).

4. The product inspection machine for automatic detection of packaging printing according to claim 3, characterized in that: The external thread of the rotating column (784) is connected to the inside of the fixed plate (6), and the external sliding connection of the rotating column (784) is connected to the inside of the fixed box (781).

5. The product inspection machine for automatic detection of packaging printing according to claim 1, characterized in that: The sorting mechanism (5) includes a back plate (51), the bottom end of which is fixedly connected to the top end of the support plate (3). A motor (52) is fixedly connected to the outside of the back plate (51). A threaded rod (53) is fixedly connected to the drive end of the motor (52). A sliding block (54) is threadedly connected to the outside of the threaded rod (53). A cylinder (55) is fixedly connected to the top end of the sliding block (54). A suction cup (56) is fixedly connected to the drive end of the cylinder (55). A collection box (57) is fixedly connected to the outside of the support leg (1).

6. The kind of inspection machine for automatic detection of packaging printing according to claim 5, characterized in that: The threaded rod (53) is externally rotatably connected to the inside of the back plate (51), and the threaded rod (54) is externally slidably connected to the inside of the back plate (51).

7. The product inspection machine for automatic detection of packaging printing according to claim 1, characterized in that: The guiding mechanism (8) includes a fixed box two (81), the fixed box two (81) is fixedly connected to the outside of the two fixed plates (6) on the same side, the fixed box two (81) is slidably connected to a sliding block two (82), the bottom end of the sliding block two (82) is rotatably connected to a rotating wheel (83), the top end of the rotating wheel (83) is fixedly connected to a telescopic column (84), and a spring (85) is sleeved on the outside of the telescopic column (84).

8. The product inspection machine for automatic detection of packaging printing according to claim 7, characterized in that: The top end of the telescopic column (84) is fixedly connected to the inside of the second fixed box (81), the bottom end of the spring (85) is fixedly connected to the top end of the second sliding block (82), and the top end of the spring (85) is fixedly connected to the inside of the second fixed box (81).

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