Printing quality detection device

Abstract

The utility model discloses a printing quality detection device, and belongs to the technical field of printing quality detection, and the technical scheme is characterized in that the printing quality detection device comprises a box body, and the box body is provided with a feeding port and a discharging port; the conveying assembly is connected with the box body, the conveying starting end of the conveying assembly is located at the feeding port, and the conveying tail end of the conveying assembly is located at the discharging port; the detection assembly is connected with the box body and can detect whether the packaging boxes conveyed by the conveying assembly have printing defects or not, and the detection assembly is electrically connected with a control module; the feeding box is connected with the box body and can contain packaging boxes, an output port is formed in the feeding box, and the output port communicates with the feeding port; the lifting assembly is connected with the bottom of the feeding box, can support the packaging box in the feeding box and is close to the output port; the feeding assembly is connected with the box body, the packaging box can be conveyed to the conveying assembly to be conveyed, and the effect of improving the production efficiency and the detection precision is achieved.

Description

Technical Field

[0001] This application relates to the field of printing quality inspection technology, and in particular to a printing quality inspection device. Background Technology

[0002] With the rapid development of the social economy and the continuous improvement of people's living standards, the requirements for product packaging are also increasing. To meet consumers' demands for aesthetically pleasing products, companies invest considerable effort in the design and production of packaging boxes. Among these factors, printing quality, as one of the most important factors determining the final visual effect of the packaging box, is undeniably crucial. This is especially true for pharmaceutical packaging boxes, which contain important information such as usage instructions. If printing problems lead to errors or omissions in this information, it could pose a potential threat to patients' health, potentially leading to more serious social problems.

[0003] Currently, on pharmaceutical packaging box production lines, printing quality inspection usually relies on manual visual inspection or simple machine-assisted inspection. These traditional methods are not only inefficient, but also easily affected by human factors, resulting in a high rate of missed detections. Utility Model Content

[0004] To improve production efficiency and testing accuracy, this utility model provides a printing quality testing device.

[0005] The printing quality inspection device provided by this utility model adopts the following technical solution:

[0006] A printing quality inspection device includes a housing, the housing having an inlet and an outlet;

[0007] A conveying assembly is connected to the housing, with the conveying start end of the conveying assembly located at the feed inlet and the conveying tail end of the conveying assembly located at the discharge outlet.

[0008] A detection component is connected to the housing and is capable of detecting whether there are printing defects in the packaging boxes transported by the conveying component. The detection component is electrically connected to a control module.

[0009] A feeding box is connected to the box body and can hold packaging boxes. The feeding box has an output port that is connected to the feeding port.

[0010] The lifting component is connected to the bottom of the feeding box and can lift the packaging box inside the feeding box and bring it closer to the output port;

[0011] The feeding assembly, connected to the box body, is able to deliver the packaging box onto the conveying assembly for transport.

[0012] By adopting the above technical solution, when it is necessary to inspect the printing quality of packaging boxes, the packaging boxes are in sheet form and have not been folded into a box. Several sheet-like packaging boxes are stacked in a feeding box, and the lifting component, feeding component, conveying component, and detection component are activated. The lifting component moves the packaging boxes closer to the feeding component, and the feeding component delivers the top packaging box to the conveying component, continuing the operation. Several packaging boxes are conveyed from the inlet to the outlet by the conveying component. During this process, the detection component performs real-time inspection of the printed surface of the packaging boxes to ensure that the printing quality of each packaging box meets the standards. The inspection results are processed by the control module, and if printing defects are detected, appropriate measures are taken in a timely manner. This printing quality inspection device can automatically complete the feeding, conveying, and inspection of packaging boxes on the production line, significantly improving production efficiency and inspection accuracy.

[0013] Preferably, the detection component includes a camera and a light source. The camera is connected to the top of the box and is used to photograph the printed surface of the packaging box. The light source is connected to the box and is used to illuminate the packaging box. Both the camera and the light source are electrically connected to the control module.

[0014] By adopting the above technical solution, the camera is connected to the top of the box, which can clearly capture the printed surface of the packaging box from above, ensuring image quality; the illumination lamp can provide stable lighting for the packaging box during the inspection process, improving the inspection accuracy and reliability; both the camera and the illumination lamp are electrically connected to the control module, realizing automated control and improving inspection efficiency and accuracy.

[0015] Preferably, the conveying assembly includes a first conveying roller, a second conveying roller, a conveyor belt, and a conveying motor. The first conveying roller and the second conveying roller are arranged horizontally and parallel to each other. Both the first conveying roller and the second conveying roller are rotatably connected to the housing. The first conveying roller is located at the feed inlet of the housing, and the second conveying roller is located at the discharge outlet of the housing. The conveyor belt is sleeved on the first conveying roller and the second conveying roller and abuts against both of them. The conveying motor is connected to the housing, and the drive shaft of the conveying motor passes through the housing and is fixedly connected to the first conveying roller.

[0016] By adopting the above technical solution, in actual use, when the packaging box enters the box body from the inlet, the conveyor motor drives the first conveyor roller to rotate, thereby driving the conveyor belt. At this time, the first conveyor roller located at the inlet smoothly transports the packaging box to the outlet. Because the first and second conveyor rollers are horizontal and parallel, the stability and reliability of the conveyor belt are ensured, reducing the occurrence of packaging box tilting or jamming due to unstable conveying, thus improving the working efficiency and stability of the entire testing device. Simultaneously, the conveyor belt design ensures that the packaging box remains flat during transport, guaranteeing accurate detection of the printed surface of the packaging box by subsequent testing components.

[0017] Preferably, the conveyor belt includes a first belt and a second belt, which are spaced apart along a direction perpendicular to the conveying direction. A sensor is disposed between the first belt and the second belt, located below the detection component, for detecting whether a packaged box passes by. The sensor is fixedly connected to the box body via a fixing rod, and is electrically connected to the control module.

[0018] By adopting the above technical solution, the first and second belts are spaced apart perpendicular to the conveying direction, creating an uncovered area on the conveyor belt. Sensors are installed within this area to accurately detect whether a package has passed by, thus enabling real-time monitoring of the package. Simultaneously, the sensors are electrically connected to the control module, allowing for timely feedback signals when a package is detected passing by, further improving the accuracy and efficiency of detection.

[0019] Preferably, the lifting assembly includes a first cylinder and a lifting plate. The first cylinder is connected to the feeding box, and the lifting plate is disposed inside the feeding box and connected to the drive shaft of the first cylinder. The lifting plate is used to stack several packaging boxes.

[0020] By adopting the above technical solution, the first cylinder can drive the lifting plate to move up and down, thereby lifting multiple packaging boxes in the feeding box layer by layer, so that the packaging boxes can approach the feeding component and the output port in an orderly manner, ensuring that each packaging box can be smoothly transported to the conveying component, thus improving the degree of automation and work efficiency.

[0021] Preferably, a limiting roller is rotatably connected to the top of the feeding box, and the limiting roller abuts against the uppermost packaging box to limit the position of the packaging box.

[0022] By adopting the above technical solution, the limiting roller abuts against the topmost packaging box, reducing the possibility of the packaging box tilting or shifting during the feeding process, so that the packaging box enters the conveying component neatly and orderly, improving the feeding accuracy and stability.

[0023] Preferably, the feeding assembly includes a mounting frame, a feeding roller, and a feeding motor. The mounting frame is connected to the housing. The feeding roller is horizontally arranged and rotatably connected to the mounting frame. The feeding motor is connected to the mounting frame, and the drive shaft of the feeding motor is connected to one end of the feeding roller.

[0024] The vertical distance between the lowest point of the feeding roller and the lowest point of the output port is 'a', where 'a' is greater than or equal to the thickness of one packaging box and less than the thickness of two packaging boxes. When the feeding roller comes into contact with the packaging box, it can drive the packaging box to slide out of the output port.

[0025] By adopting the above technical solution, the feeding motor is started, which drives the feeding roller to rotate. The feeding roller can accurately take out a single packaging box from the feeding box and send it to the conveying component, ensuring that only one packaging box is conveyed at a time, reducing the jamming problem caused by multiple overlapping boxes.

[0026] Preferably, the housing is connected to a temporary storage plate, which is located at the discharge port and is used to temporarily store the packaging boxes delivered by the conveying assembly.

[0027] By adopting the above technical solution, the temporary storage plate can be temporarily stored after the packaging box has been tested, thereby improving the continuous working capability of the equipment.

[0028] Preferably, the housing is connected to a pressing assembly, which includes a second cylinder and a guide rod. The second cylinder is connected to the housing and electrically connected to the control module. The guide rod is connected to the second cylinder. A gap is left between the temporary storage plate and the conveying assembly, and the guide rod is directly opposite the gap between the temporary storage plate and the conveying assembly.

[0029] By adopting the above technical solution, when a printing defect is detected in the packaging box, the control module activates the second cylinder. Before the defective box is conveyed to the temporary storage plate, the guide rod presses down on the box, causing it to exit through the gap between the temporary storage plate and the conveying assembly. This achieves automated control and improves the efficiency and stability of the detection device.

[0030] In summary, this utility model has the following beneficial effects:

[0031] 1. When the printing quality of packaging boxes needs to be inspected, the boxes are in sheet form and not folded into a box. Several sheet-like packaging boxes are stacked in the feeding box. The lifting component, feeding component, conveying component, and inspection component are activated. The lifting component moves the packaging boxes closer to the feeding component, which then sends the topmost packaging box onto the conveying component, continuing this process. Several packaging boxes are conveyed from the inlet to the outlet by the conveying component. During this process, the inspection component performs real-time inspection of the printed surface of the packaging boxes to ensure that the printing quality of each packaging box meets the standards. The inspection results are processed by the control module. If printing defects are detected, appropriate measures are taken promptly. This printing quality inspection device can automatically complete the feeding, conveying, and inspection of packaging boxes on the production line, significantly improving production efficiency and inspection accuracy.

[0032] 2. When a printing defect is detected in the packaging box, the control module activates the second cylinder. Before the defective box is conveyed to the temporary storage plate, a guide rod presses down on the box, causing it to exit through the gap between the temporary storage plate and the conveying assembly. This achieves automated control and improves the efficiency and stability of the detection device. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a printing quality inspection device.

[0034] Figure 2 This is a structural schematic diagram of the conveying component.

[0035] Figure 3 This is a structural diagram of the lifting assembly.

[0036] Figure 4 This is a structural diagram of the feeding assembly.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Housing; 11. Feed inlet; 12. Discharge outlet; 13. Temporary storage plate; 14. Support leg; 15. Waste box; 2. Conveying assembly; 21. First conveyor roller; 22. Second conveyor roller; 23. Conveyor belt; 231. First belt; 232. Second belt; 24. Conveyor motor; 3. Detection assembly; 31. Camera; 32. Illuminator; 4. Sensor; 41. Fixing rod; 5. Loading box; 51. Output port; 52. Limiting roller; 6. Lifting assembly; 61. First cylinder; 62. Lifting plate; 7. Loading assembly; 71. Mounting frame; 72. Loading roller; 73. Loading motor; 8. Auxiliary roller; 81. Synchronization assembly; 9. Pressing assembly; 91. Second cylinder; 92. Guide rod. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0040] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0041] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0042] A printing quality inspection device, referring to Figure 1 , Figure 2 and Figure 3 The system includes a housing 1, a conveying assembly 2, a detection assembly 3, a loading box 5, a lifting assembly 6, and a loading assembly 7. The housing 1 has an inlet 11 and an outlet 12. The conveying assembly 2 is connected to the housing 1, with its conveying start at the inlet 11 and its conveying end at the outlet 12. The detection assembly 3 is connected to the housing 1 and can detect printing defects in the packaging boxes transported by the conveying assembly 2. The detection assembly 3 is electrically connected to a control module. The loading box 5 is connected to the housing 1 and can hold the packaging boxes. The loading box 5 has an outlet 51, which communicates with the inlet 11. The lifting assembly 6 is connected to the bottom of the loading box 5 and can lift the packaging boxes inside the loading box 5 and bring them closer to the outlet 51. The loading assembly 7 is connected to the housing 1 and can deliver the packaging boxes to the conveying assembly 2 for transport.

[0043] Several sheet-like packaging boxes are stacked in the feeding box 5, and the lifting assembly 6, feeding assembly 7, conveying assembly 2, and detection assembly 3 are activated. The lifting assembly 6 moves the packaging boxes closer to the feeding assembly 7, and the feeding assembly 7 delivers the topmost packaging box to the conveying assembly 2, continuing the operation. Several packaging boxes are conveyed from the inlet 11 to the outlet 12 by the conveying assembly 2. During this process, the detection assembly 3 performs real-time detection on the printed surface of the packaging boxes to ensure that the printing quality of each packaging box meets the standards. The detection results are processed by the control module, and if printing defects are detected, appropriate measures can be taken in a timely manner. This printing quality detection device can automatically complete the feeding, conveying, and detection of packaging boxes on the production line, significantly improving production efficiency and detection accuracy.

[0044] Reference Figure 2 The inlet 11 and outlet 12 are located on two opposite side walls of the housing 1.

[0045] Reference Figure 2The conveying assembly 2 includes a first conveying roller 21, a second conveying roller 22, a conveyor belt 23, and a conveyor motor 24. Both the first and second conveying rollers 21 and 22 are horizontally and parallel to each other. The first conveying roller 21 is located at the inlet 11 and rotatably connected to the housing 1. The second conveying roller 22 is located at the outlet 12 and rotatably connected to the housing 1. The conveyor belt 23 is fitted onto the first and second conveying rollers 21 and abuts against both. The conveyor motor 24 is fixedly connected to the outer wall of the housing 1, and its drive shaft passes through the housing 1 and is fixedly connected to the first conveying roller 21.

[0046] When the packaging box enters the box 1 from the inlet 11, the conveyor motor 24 drives the first conveyor roller 21 to rotate, thereby driving the conveyor belt 23 to run, and then smoothly conveying the packaging box to the outlet 12.

[0047] Reference Figure 2 The conveyor belt 23 includes a first belt 231 and a second belt 232, which are spaced apart perpendicular to the conveying direction. A first conveyor roller 21 is fixedly connected to a first limiting block, which is located between the first belt 231 and the second belt 232 and is used to limit the movement of the first belt 231 and the second belt 232. A second conveyor roller 22 is fixedly connected to a second limiting block, which is located between the first belt 231 and the second belt 232 and is used to limit the movement of the first belt 231 and the second belt 232.

[0048] Reference Figure 3 The detection component 3 is located inside the housing 1. The detection component 3 includes a camera 31 and a lamp 32. The camera 31 is fixedly connected to the top of the housing 1 and electrically connected to the control component. The lamp 32 is fixedly connected to the side wall of the housing 1 and electrically connected to the control module.

[0049] The illumination lamp 32 provides stable lighting for the packaging box during inspection, improving inspection accuracy and reliability. The camera 31 is connected to the top of the box 1, enabling clear imaging of the printed surface of the packaging box from above, ensuring image quality. The camera 31 transmits the images to the control module, which analyzes the images captured by the camera 31 to check for printing defects.

[0050] Reference Figure 2 A sensor 4 is disposed between the first belt 231 and the second belt 232. The sensor 4 is located below the camera 31 and is fixedly connected to a fixing rod 41. The first end of the fixing rod 41 passes through the upper and lower belt surfaces of the first belt 231 and is fixedly connected to the housing 1. The second end of the fixing rod 41 passes through the upper and lower belt surfaces of the second belt 232 and is fixedly connected to the housing 1.

[0051] The first belt 231 and the second belt 232 are arranged at intervals perpendicular to the conveying direction, so that an uncovered area is formed on the conveyor belt 23. A sensor 4 is installed in this area, which can accurately detect whether the packaging box has passed through, thereby realizing real-time monitoring of the packaging box.

[0052] Reference Figure 3 The top of the feeding box 5 is open. The output port 51 is located on the side wall of the feeding box 5, and the lowest point of the output port 51 is flush with the top of the conveyor belt 23.

[0053] Reference Figure 3 The lifting assembly 6 includes a first cylinder 61 and a lifting plate 62. The first cylinder 61 is fixedly connected to the bottom of the loading box 5, and the drive shaft of the first cylinder 61 passes through the loading box 5 and is fixedly connected to the lifting plate 62. The lifting plate 62 is located inside the loading box 5, and its perimeter matches the inner wall of the loading box 5. The lifting plate 62 is slidably connected to the loading box 5. The lifting plate 62 is used to stack several packaging boxes, with the bottom of the topmost packaging box higher than the lowest point of the output port 51.

[0054] The first cylinder 61 can drive the lifting plate 62 to move up and down, thereby lifting multiple packaging boxes in the feeding box 5 layer by layer, so that the packaging boxes can approach the limiting roller 52 and the output port 51 in an orderly manner.

[0055] Reference Figure 2 and Figure 4 The top of the feeding box 5 is rotatably connected to a limiting roller 52. The length direction of the limiting roller 52 is parallel to the length direction of the first conveying roller 21. The limiting roller 52 is used to abut against the topmost packaging box.

[0056] The limiting roller 52 works in conjunction with the lifting assembly 6 to limit the top packaging box, so that the packaging box enters the conveying assembly 2 neatly and orderly, improving the feeding accuracy and stability.

[0057] Reference Figure 1 and Figure 4 The feeding assembly 7 includes a mounting frame 71, a feeding roller 72, and a feeding motor 73. The mounting frame 71 is fixedly connected to the housing 1. The feeding roller 72 is horizontally arranged, and its length is parallel to the length direction of the first conveying roller 21. The feeding roller 72 is rotatably connected to the mounting frame 71, and the feeding motor 73 is fixedly connected to the mounting frame 71. The drive shaft of the feeding motor 73 passes through the mounting frame 71 and is fixedly connected to the feeding roller 72.

[0058] Reference Figure 3 and Figure 4The lowest point of the feeding roller 72 and the lowest point of the limiting roller 52 are on the same horizontal plane. The vertical distance between the lowest point of the feeding roller 72 and the lowest point of the output port 51 is 'a', which is greater than or equal to the thickness of one packaging box and less than the thickness of two packaging boxes. When the feeding roller 72 comes into contact with the topmost packaging box, it can drive the topmost packaging box to slide out of the output port 51.

[0059] The lowest point of the feeding roller 72 is on the same horizontal plane as the lowest point of the limiting roller 52, which facilitates the feeding roller 72 in removing the packaging box from under the limiting roller 52. In addition, the feeding roller 72 can accurately remove a single packaging box from the feeding box 5 and send it to the conveying assembly 2, ensuring that only one packaging box is conveyed at a time, reducing the jamming problem caused by multiple overlapping boxes.

[0060] Reference Figure 2 and Figure 4 It also includes an auxiliary roller 8, which is located inside the housing 1 and above the conveyor belt 23. The length direction of the auxiliary roller 8 is parallel to the length direction of the feeding roller 72, and both ends of the auxiliary roller 8 are rotatably connected to the housing 1. The end of the feeding roller 72 away from the motor passes through the mounting bracket 71 and is fixedly connected to the synchronization component 81. One end of the auxiliary roller 8 extends out of the housing 1 and is connected to the synchronization component 81 to achieve synchronous rotation of the feeding roller 72 and the auxiliary roller 8.

[0061] When the packaging box comes into contact with the conveyor belt 23, the auxiliary roller 8 can abut against the packaging box again and transport the packaging box synchronously with the conveyor belt 23 to increase the stability of the packaging box transportation.

[0062] Reference Figure 4 The synchronization component 81 includes a first wheel, a second wheel, and a timing belt. The first wheel is fixedly connected to the feeding roller 72, the second wheel is fixedly connected to the auxiliary roller 8, and the timing belt is sleeved on the first wheel and the second wheel and abuts against both the first wheel and the second wheel.

[0063] Reference Figure 2 The housing 1 is fixedly connected to a temporary storage plate 13, which is horizontally set and used to temporarily store the packaging boxes conveyed by the conveyor belt 23.

[0064] Reference Figure 2 The housing 1 is fixedly connected to a pressing assembly 9, which includes a second cylinder 91 and a guide rod 92. The second cylinder 91 is fixedly connected to the housing 1, and the guide rod 92 is fixedly connected to the second cylinder 91. A gap is left between the temporary storage plate 13 and the conveyor belt 23, and the guide rod 92 is aligned with the gap between the temporary storage plate 13 and the conveyor belt 23.

[0065] When a printing defect is detected in the packaging box, the control module controls the second cylinder 91 to start. Before the packaging box with printing defects is conveyed to the temporary storage plate 13, the guide rod 92 presses down on the packaging box, so that the packaging box with printing defects is output from the gap between the temporary storage plate 13 and the conveying component 2.

[0066] Reference Figure 2 The box body 1 is rectangular in shape with an opening at the bottom. Four legs 14 are fixedly connected to the bottom of the box body 1, and the four legs 14 are respectively located at the four corners of the box body 1. A waste box 15 is placed in the box body 1. The waste box 15 has an opening at the top and is located below the pressing component 9, which can collect packaging boxes with printing defects.

[0067] Reference Figure 2 , Figure 3 and Figure 4 In this embodiment, the conveying motor 24, the first cylinder 61, the feeding motor 73, and the second cylinder 91 are all electrically connected to the control module to realize the automated control of the device.

[0068] The operating principle of this application is as follows: Several sheet-like packaging boxes are stacked in the feeding box 5, and the lifting assembly 6, feeding assembly 7, conveying assembly 2, and detection assembly 3 are activated through the control module. The lifting assembly 6 moves the packaging boxes closer to the feeding assembly 7, and the feeding assembly 7 delivers the topmost packaging box to the conveying assembly 2, continuing the operation. When the packaging box contacts the conveyor belt 23, the auxiliary roller 8 can again abut against the packaging box and synchronously convey the packaging box with the conveyor belt 23 to increase the stability of the packaging box transportation.

[0069] The conveying assembly 2 transports the packaging box from the inlet 11 to the outlet 12. During this process, the camera 31 captures high-quality images of the packaging box. The control module receives and analyzes the images captured by the camera 31, and controls the action of the pressing assembly 9 based on the analysis results, thereby achieving automated printing quality inspection. The entire device is compact in structure and easy to operate, significantly improving inspection efficiency and accuracy, reducing manual intervention, lowering the missed inspection rate, and enhancing production efficiency and product quality.

[0070] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A print quality detection apparatus characterized by comprising: Including box (1), the box (1) is provided with feed inlet (11) and discharge outlet (12); Conveying assembly (2) is connected with the box (1), the conveying assembly (2) is located in the feed inlet (11), the conveying tail end of the conveying assembly (2) is located in the discharge outlet (12); Detection assembly (3) is connected with the box (1) and can detect whether the packaging box transported by the conveying assembly (2) exists printing defect, the detection assembly (3) is electrically connected with control module; The loading box (5) is connected with the box (1) and can hold the packaging box, the output port (51) is communicated with the feed inlet (11); Lifting assembly (6) is connected with the bottom of the loading box (5), which can hold the packaging box in the loading box (5) and approach the output port (51); The loading assembly (7) is connected with the box (1), which can send the packaging box to the conveying assembly (2) and transport.

2. The printed quality detection device according to claim 1, characterized in that: The detection assembly (3) includes camera (31) and spotlight (32), the camera (31) is connected with the top of the box (1), which is used for shooting the printing surface of the packaging box, the spotlight (32) is connected with the box (1), which can illuminate the packaging box, the camera (31) and the spotlight (32) are electrically connected with the control module.

3. The print quality detection apparatus of claim 1, wherein: The conveying assembly (2) includes first conveying roller (21), second conveying roller (22), conveying belt (23) and conveying motor (24), the first conveying roller (21) and the second conveying roller (22) are horizontally and parallelly arranged, the first conveying roller (21) and the second conveying roller (22) are rotatably connected with the box (1), the first conveying roller (21) is located in the feed inlet (11) of the box (1), the second conveying roller (22) is located in the discharge outlet (12) of the box (1), the conveying belt (23) is sleeved on the first conveying roller (21) and the second conveying roller (22), and abuts against the first conveying roller (21) and the second conveying roller (22), the conveying motor (24) is connected with the box (1), the driving shaft of the conveying motor (24) penetrates through the box (1) and is fixedly connected with the first conveying roller (21).

4. A print quality detection device according to claim 3, characterised in that: The conveying belt (23) includes first belt (231) and second belt (232), the first belt (231) and the second belt (232) are spaced apart along the direction perpendicular to the conveying direction, a sensor (4) is arranged between the first belt (231) and the second belt (232), the sensor (4) is arranged below the detection assembly (3) and is used for detecting whether there is a packaging box passing, the sensor (4) is fixedly connected with the box (1) through a fixed rod (41), and the sensor (4) is electrically connected with the control module.

5. The print quality detection apparatus of claim 1, wherein: The lifting assembly (6) comprises a first cylinder (61) connected with the feeding box (5) and a lifting plate (62) arranged inside the feeding box (5) and connected with a driving shaft of the first cylinder (61), and the lifting plate (62) is used for stacking several packaging boxes.

6. A print quality detection device according to claim 5, characterised in that: A limiting roller (52) is rotationally connected to the top of the feeding box (5), and the limiting roller (52) abuts against the uppermost packaging box to limit the packaging box.

7. A print quality detection device according to claim 5 or 6, characterised in that: The feeding assembly (7) comprises a mounting frame (71), a feeding roller (72) and a feeding motor (73), the mounting frame (71) is connected with the box body (1), the feeding roller (72) is horizontally arranged and rotationally connected with the mounting frame (71), the feeding motor (73) is connected with the mounting frame (71), and a driving shaft of the feeding motor (73) is connected with one end of the feeding roller (72). The distance between the lowest part of the feeding roller (72) and the lowest part of the output port (51) in the vertical direction is a, a is greater than or equal to the thickness of one packaging box and less than the thickness of two packaging boxes, and when the feeding roller (72) abuts against the packaging box, the packaging box can be driven to slide out of the output port (51).

8. The print quality detection apparatus of claim 1, wherein: The box body (1) is connected with a temporary storage plate (13) located at the discharge port (12) and used for temporarily storing the packaging boxes sent out by the conveying assembly (2).

9. A print quality detection apparatus according to claim 8, characterised in that: The box body (1) is connected with a pressing assembly (9), the pressing assembly (9) comprises a second cylinder (91) and a guide rod (92), the second cylinder (91) is connected with the box body (1), the second cylinder (91) is electrically connected with the control module, the guide rod (92) is connected with the second cylinder (91), a gap is left between the temporary storage plate (13) and the conveying assembly (2), and the guide rod (92) is opposite to the gap between the temporary storage plate (13) and the conveying assembly (2).

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