A corrugated box printing defect detection device

Abstract

The invention discloses a device for detecting printing defects of corrugated paperboards, and the invention relates to the field of corrugated paperboard detection technology. The device for detecting printing defects of corrugated paperboards, through the arrangement of a right-angle positioning plate, can guide the corrugated paperboard body to be transported to the inside of a detection box in a central position by the cooperation of the guiding conveyor belt as the corrugated paperboard body contacts the side of the guiding conveyor belt during transportation, thereby ensuring the subsequent detection accuracy. At the same time, the guiding conveyor belt can clamp both sides of the corrugated paperboard body in the process of guiding the corrugated paperboard body, and the guiding conveyor belt can run at the same speed as the conveyor belt, thereby ensuring the transportation stability of the corrugated paperboard body while reducing the friction on both sides thereof, further improving the detection effect and detection efficiency, and can adjust the position of the guiding conveyor belt to make it suitable for guiding and positioning corrugated paperboard bodies of different sizes, thereby improving the application range of the device.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paperboard detection, in particular to a corrugated paper box printing defect detection device. Background Art

[0002] Corrugated cardboard is made into corrugated boxes through die-cutting, creasing, nailing or gluing. Corrugated boxes are the most widely used packaging products, and the amount of use has always been the first of various packaging products. In addition to protecting goods, facilitating storage and transportation, it also plays the role of beautifying and promoting goods. After the printing of corrugated cardboard is completed, it is necessary to conduct quality inspection to determine whether the printing on its surface has defects. Most of the existing corrugated boxes will use double-sided spraying, that is, spraying trademarks and patterns on the outer surface of the corrugated box, and spraying codes on the inner surface of the corrugated box. Referring to the Chinese patent, the announcement number is "CN220730078U" "A Corrugated Box Printing Defect Detection Device", which points out that at present, when detecting the printing defects of corrugated boxes, the corrugated boxes are usually fixed on the detection table, and then the detection is carried out by lifting the detector, which will result in a small detection range. However, the above-mentioned equipment still has the problems of low detection efficiency and small application range. In this regard, we propose a corrugated box printing defect detection device to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a device for detecting printing defects of corrugated paper boxes, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a corrugated paper box printing defect detection device, comprising a detection box body, a control panel is fixedly installed on the outside of the detection box body, conveyor belts are rotatably installed on both sides of the inside of the detection box body, and a corrugated paperboard body is conveyed above the conveyor belt;

[0005] Right-angle positioning plates are fixed on both sides of the interior of the detection box. The installation position of the right-angle positioning plates is located between the two conveyor belts, and the side of the right-angle positioning plates close to the corrugated cardboard body is rotatably connected to the guide conveyor belt. The guide conveyor belt is used to guide and clamp the conveyed corrugated cardboard body and can be adjusted according to the size of the corrugated cardboard body so that the corrugated cardboard body is always located in the center for output;

[0006] A scanning module and a bottom scanning device are fixedly installed inside the detection box. The scanning module and the bottom scanning device are respectively located on the upper and lower sides of the corrugated cardboard body, and are respectively used to perform image scanning on the surface of the conveyed corrugated cardboard body to determine whether the printing quality of the corrugated cardboard body is qualified.

[0007] Preferably, an adjusting rod is slidably connected to the side of the right-angle positioning plate, a load-bearing plate is fixed to the side of the right-angle positioning plate close to the corrugated cardboard body, a slide groove is provided at one end of the load-bearing plate close to the corrugated cardboard body, and a sliding adjusting rod is slidably connected inside the slide groove, a driving rod is rotatably installed at one end of the load-bearing plate away from the corrugated cardboard body, a transmission roller is fixedly sleeved on the end of the driving rod, transmission rollers are provided on the outsides of the driving rod and the sliding adjusting rod and the adjusting rod, the transmission rollers are fixedly connected to the driving rod, the transmission rollers are rotatably connected to the sliding adjusting rod and the adjusting rod, and the guide conveyor belt is rotatably connected to the outsides of multiple transmission rollers.

[0008] Preferably, a hydraulic cylinder is fixedly installed inside the right-angle positioning plate, a push plate is fixedly installed on the piston end of the hydraulic cylinder, the push plate is fixedly installed on the outside of the sliding adjustment rod, and the hydraulic cylinder is used to drive the sliding adjustment rod to slide inside the slide groove.

[0009] Preferably, a driving motor is fixedly mounted on the bottom of the right-angle positioning plate, and an output end of the driving motor is fixedly connected to the driving rod.

[0010] Preferably, a limiting slide is fixedly installed on the end of the adjusting rod, a rectangular slot is opened on the side of the right-angle positioning plate, the limiting slide is slidably installed inside the rectangular slot, and a supporting spring is fixedly installed between the limiting slide and the inner wall of the rectangular slot.

[0011] Preferably, a bottom carrier is fixedly mounted on the outer side of the guide conveyor belt.

[0012] Preferably, both sides of the conveyor belt are rotatably connected to a drive shaft, the drive shaft is rotatably installed inside the detection box, a fill light bar is fixedly installed above the bottom scanning device, and fixing plates are installed on both sides of the scanning module, and the fixing plates are fixedly installed inside the detection box.

[0013] Preferably, a cleaning component is provided inside the detection box for cleaning the surface of the conveyed corrugated cardboard body, the cleaning component includes a cleaning plate rack, an assembly rod is provided between the bottom of the cleaning plate rack and the sliding adjustment rod, the cleaning plate rack is located inside the detection box, and a collecting slot is provided at the bottom of the cleaning plate rack, a negative pressure device is fixedly installed inside the detection box, and a corrugated connecting pipe is connected between the negative pressure device and the cleaning plate rack.

[0014] Preferably, there are two assembly rods which are respectively fixedly mounted on the corresponding ends of the sliding adjustment rods, and one end of the assembly rod away from the sliding adjustment rod is slidably connected to the bottom of the cleaning plate rack.

[0015] Preferably, an elastic scraper is fixedly mounted on the outer side of the cleaning plate frame, the elastic scraper is installed obliquely and the end portion is in contact with the surface of the corrugated cardboard body.

[0016] The present invention provides a corrugated paper box printing defect detection device. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The corrugated paper box printing defect detection device, through the setting of the right-angle positioning plate, can guide the corrugated paper board body to be centered and transported to the inside of the detection box through the cooperation of the guide conveyor belt as the corrugated paper board body contacts the side of the guide conveyor belt during transportation, thereby ensuring the accuracy of subsequent detection. At the same time, the guide conveyor belt can clamp the two sides of the corrugated paper board body during the process of guiding the corrugated paper board body, and the guide conveyor belt runs at the same speed as the conveyor belt, thereby ensuring the transportation stability of the corrugated paper board body while reducing the friction on both sides thereof, further improving the detection effect and detection efficiency. By adjusting the position of the guide conveyor belt, it can be suitable for guiding and positioning corrugated paper board bodies of different sizes, thereby improving the application range of the equipment.

[0018] (2) The device for detecting printing defects of corrugated paper boxes, through the setting of a cleaning component, can complete the cleaning operation on the surface of the corrugated paper board body during the conveying process through the cooperation of an elastic scraper, and can extract and collect the cleaned dust in the form of negative pressure through the cooperation of a cleaning plate rack, thereby effectively ensuring the subsequent detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure;

[0021] Figure 3 For the present invention Figure 2 Front view;

[0022] Figure 4 It is a schematic diagram of the structure of the right-angle positioning plate and the cleaning plate frame of the present invention;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the cleaning plate frame of the present invention;

[0024] Figure 6 For the present invention Figure 5 Front view;

[0025] Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle;

[0026] Figure 8 It is a schematic diagram of the structure of the guide conveyor belt of the present invention.

[0027] In the figure: 1. detection box; 101. control panel; 2. conveyor belt; 3. drive shaft; 4. corrugated cardboard body; 5. scanning module; 501. fixing plate; 6. bottom scanning device; 601. fill light strip; 7. negative pressure device; 8. right-angle positioning plate; 801. rectangular notch; 8011. support spring; 802. load-bearing plate; 8021. slide; 8022. drive motor; 9. hydraulic cylinder; 10. guide conveyor belt; 1001. bottom carrier; 11. cleaning plate rack; 1101. corrugated connecting pipe; 1102. collecting notch; 12. elastic scraper; 13. assembly rod; 14. driving rod; 15. sliding adjustment rod; 1501. push plate; 16. adjustment rod; 1601. limit slide plate; 17. transmission roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 8 The present invention provides two technical solutions, which specifically include the following embodiments:

[0030] Embodiment 1:

[0031] In an embodiment of the present invention, a device for detecting printing defects of a corrugated paperboard box includes a detection box 1, a control panel 101 is fixedly installed on the outer side of the detection box 1, conveyor belts 2 are rotatably installed on both sides of the interior of the detection box 1, and a corrugated paperboard body 4 is conveyed above the conveyor belts 2, the control panel 101 is controlled based on an existing PLC control module, the conveyor belt 2 is an existing device, and is used to realize the conveying operation of the corrugated paperboard body 4, the corrugated paperboard body 4 is a paperboard with surface printing completed, and is formed into a carton by folding after the detection is completed;

[0032] In the embodiment of the present invention, specifically, the corrugated cardboard body 4 is often printed on both sides, and the pattern and the code are printed respectively;

[0033] In the embodiment of the present invention, further, right-angle positioning plates 8 are fixed on both sides of the interior of the detection box 1, and the installation position of the right-angle positioning plates 8 is located between the two conveyor belts 2, and the right-angle positioning plates 8 are rotatably connected to the side of the corrugated cardboard body 4 close to the corrugated cardboard body 4. The guide conveyor belt 10 is used to guide and clamp the conveyed corrugated cardboard body 4, and can be adjusted according to the size of the corrugated cardboard body 4, so that the corrugated cardboard body 4 is always located in the center position for output. The guide conveyor belt 10 is triangular in shape, with reference to Figure 1-Figure 8When the corrugated cardboard body 4 is transported by the conveyor belt 2, as the corrugated cardboard body 4 contacts the side of the guide conveyor belt 10, the guide conveyor belt 10 can guide the corrugated cardboard body 4 to be transported to the inside of the detection box 1 in a centered position, thereby ensuring the subsequent detection accuracy. At the same time, the guide conveyor belt 10 can clamp both sides of the corrugated cardboard body 4 in the process of guiding the corrugated cardboard body 4, and the guide conveyor belt 10 runs at the same speed as the conveyor belt 2, thereby ensuring the transportation stability of the corrugated cardboard body 4 while reducing the friction on both sides thereof, thereby further improving the detection effect and the protection effect;

[0034] In the embodiment of the present invention, further, a scanning module 5 and a bottom scanning device 6 are fixedly installed inside the detection box 1. The scanning module 5 and the bottom scanning device 6 are respectively located on the upper and lower sides of the corrugated cardboard body 4, and are respectively used to perform image scanning on the surface of the conveyed corrugated cardboard body 4, and are used to judge whether the printing quality of the corrugated cardboard body 4 is qualified. The scanning module 5 and the bottom scanning device 6 are both existing image scanning devices, which are used to scan the surface of the corrugated cardboard body 4 and transmit it to the terminal to realize the detection operation of its surface, so as to judge the printing quality of the surface of the corrugated cardboard body 4. Through the cooperation of the scanning module 5 and the bottom scanning device 6, the double-sided scanning operation of the corrugated cardboard body 4 can be realized;

[0035] In the embodiment of the present invention, specifically, the right-angle positioning plate 8 is slidably connected to the side with an adjusting rod 16, a load-bearing plate 802 is fixed to the side of the right-angle positioning plate 8 close to the corrugated cardboard body 4, a slide groove 8021 is provided at one end of the load-bearing plate 802 close to the corrugated cardboard body 4, and a sliding adjusting rod 15 is slidably connected inside the slide groove 8021, a driving rod 14 is rotatably installed at one end of the load-bearing plate 802 away from the corrugated cardboard body 4, a transmission roller 17 is fixedly sleeved at the end of the driving rod 14, and a transmission roller 17 is provided on the outer sides of the driving rod 14, the transmission roller 17 is fixedly connected to the driving rod 14, the transmission roller 17 is rotatably connected to the sliding adjusting rod 15 and the adjusting rod 16, the guide conveyor belt 10 is rotatably connected to the outer sides of multiple transmission rollers 17, and a liquid The hydraulic cylinder 9 has a piston end fixedly mounted with a push plate 1501, and the push plate 1501 is fixedly mounted on the outside of the sliding adjustment rod 15. The hydraulic cylinder 9 is used to drive the sliding adjustment rod 15 to slide inside the slide groove 8021; it is connected to the outside of multiple guide conveyor belts 10 through the guide conveyor belt 10. When it is necessary to guide and position the corrugated cardboard body 4 of different sizes, the operation of the hydraulic cylinder 9 can drive the sliding adjustment rod 15 to slide inside the slide groove 8021 through the push plate 1501, so that the transmission roller 17 sleeved on the outside of the sliding adjustment rod 15 moves at the same time. At this time, the guide conveyor belt 10 can be stressed, so that the corresponding transmission roller 17 and the adjustment rod 16 inside it slide on the side of the right-angle positioning plate 8 until the straight-line distance between the two guide conveyor belts 10 is adapted to the width of the corrugated cardboard body 4;

[0036] In the embodiment of the present invention, specifically, a driving motor 8022 is fixedly installed at the bottom of the right-angle positioning plate 8, and the output end of the driving motor 8022 is fixedly connected to the driving rod 14. When the conveyor belt 2 runs to convey the corrugated cardboard body 4, the operation of the driving motor 8022 can drive the corresponding driving rod 14 to run, and the cooperation of the transmission roller 17 can drive the guide conveyor belt 10 to run, so that the guide conveyor belt 10 and the conveyor belt 2 keep running at the same speed, thereby reducing the friction force on both sides of the corrugated cardboard body 4;

[0037] In the embodiment of the present invention, specifically, a limiting slide plate 1601 is fixedly installed at the end of the adjusting rod 16, a rectangular notch 801 is opened on the side of the right-angle positioning plate 8, the limiting slide plate 1601 is slidably installed inside the rectangular notch 801, and a supporting spring 8011 is fixedly installed between the limiting slide plate 1601 and the inner wall of the rectangular notch 801. When the guide conveyor belt 10 is adjusted, as the adjusting rod 16 is subjected to force, the limiting slide plate 1601 can be driven to slide inside the corresponding rectangular notch 801, and the supporting spring 8011 is used to provide supporting force for the limiting slide plate 1601;

[0038] In the embodiment of the present invention, further, a bottom carrier sheet 1001 is fixedly installed on the outer side of the guide conveyor belt 10, and the outer side of the bottom carrier sheet 1001 is provided with an arc surface, so that when the guide conveyor belt 10 is running, the bottom carrier sheet 1001 can be attached to the bottom of the side of the corrugated paperboard body 4 to provide support force and ensure the transportation stability;

[0039] In the embodiment of the present invention, specifically, both sides of the interior of the conveyor belt 2 are rotatably connected with a driving shaft 3, the driving shaft 3 is rotatably installed inside the detection box 1, and a separate motor is installed on the outside of the detection box 1 to drive the driving shaft 3 to run, thereby realizing the driving operation of the conveyor belt 2. It will not be elaborated here. A fill light bar 601 is fixedly installed above the bottom scanning device 6, and fixed plates 501 are installed on both sides of the scanning module 5. The fixed plates 501 are fixedly installed inside the detection box 1. The fill light bar 601 is operated during shooting to realize the fill light operation and ensure the clarity of the shooting.

[0040] Embodiment 2: Based on embodiment 1, further, a cleaning component is provided inside the detection box 1 for cleaning the surface of the conveyed corrugated cardboard body 4;

[0041] In the embodiment of the present invention, the cleaning assembly includes a cleaning plate frame 11, an assembly rod 13 is provided between the bottom of the cleaning plate frame 11 and the sliding adjustment rod 15, the cleaning plate frame 11 is located inside the detection box 1, and a collecting slot 1102 is provided at the bottom of the cleaning plate frame 11, a negative pressure device 7 is fixedly installed inside the detection box 1, and a corrugated connecting pipe 1101 is connected between the negative pressure device 7 and the cleaning plate frame 11;

[0042] In the embodiment of the present invention, when the corrugated cardboard body 4 is being transported, the operation of the negative pressure device 7 can generate negative pressure inside the cleaning plate rack 11 through the connection of the corrugated connecting pipe 1101, and the dust on the surface of the corrugated cardboard body 4 can be extracted through the collecting slot 1102 opened at the bottom thereof, thereby further improving the subsequent detection effect;

[0043] In the embodiment of the present invention, specifically, both sides of the cleaning plate frame 11 are provided with assembly plates, and the assembly plates are fixedly connected to the inner side of the right-angle positioning plate 8;

[0044] In the embodiment of the present invention, specifically, there are two assembly rods 13, which are respectively fixedly mounted on the ends of the corresponding sliding adjustment rods 15, and one end of the assembly rod 13 away from the sliding adjustment rod 15 is slidably connected to the bottom of the cleaning plate frame 11; when the guide conveyor belt 10 is adjusted in position, as the sliding adjustment rod 15 slides, the assembly rod 13 can be driven to slide at the bottom of the cleaning plate frame 11, and the cooperation of the assembly rod 13 can ensure the installation stability of the cleaning plate frame 11, and at the same time ensure the position adjustment of the guide conveyor belt 10;

[0045] In the embodiment of the present invention, further, an elastic scraper 12 is fixedly installed on the outer side of the cleaning plate frame 11. The elastic scraper 12 is installed at an angle and the end thereof is in contact with the surface of the corrugated cardboard body 4. Through the cooperation of the elastic scraper 12, the cleaning effect of the corrugated cardboard body 4 can be further improved, and the detection accuracy can be improved.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0047] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A corrugated paper box printing defect detection device, comprising a detection box (1), a control panel (101) fixedly mounted on the outer side of the detection box (1), characterized in that: Conveyor belts (2) are rotatably mounted on both sides of the interior of the detection box (1), and a corrugated cardboard body (4) is conveyed above the conveyor belts (2); Right-angle positioning plates (8) are fixed on both sides of the interior of the detection box (1). The installation position of the right-angle positioning plates (8) is located between the two conveyor belts (2). The side of the right-angle positioning plates (8) close to the corrugated cardboard body (4) is rotatably connected to a guide conveyor belt (10). The guide conveyor belt (10) is used to guide and clamp the corrugated cardboard body (4) being conveyed, and can be adjusted according to the size of the corrugated cardboard body (4) so ​​that the corrugated cardboard body (4) is always located in the center for output; A scanning module (5) and a bottom scanning device (6) are fixedly installed inside the detection box (1); the scanning module (5) and the bottom scanning device (6) are respectively located on the upper and lower sides of the corrugated cardboard body (4), and are respectively used to perform image scanning on the surface of the conveyed corrugated cardboard body (4) to determine whether the printing quality of the corrugated cardboard body (4) is qualified; The right-angle positioning plate (8) is slidably connected to an adjustment rod (16) on the side thereof; a load-bearing plate (802) is fixed on the side of the right-angle positioning plate (8) close to the corrugated cardboard body (4); a slide groove (8021) is provided at one end of the load-bearing plate (802) close to the corrugated cardboard body (4); a sliding adjustment rod (15) is slidably connected inside the slide groove (8021); a driving rod (14) is rotatably mounted on one end of the load-bearing plate (802) away from the corrugated cardboard body (4); a transmission roller (17) is fixedly sleeved at the end of the driving rod (14); transmission rollers (17) are provided on the outer sides of the driving rod (14) and the sliding adjustment rod (15) and the adjustment rod (16); the transmission rollers (17) are fixedly connected to the driving rod (14); the transmission rollers (17) are rotatably connected to the sliding adjustment rod (15) and the adjustment rod (16); and the guide conveyor belt (10) is rotatably connected to the outer sides of a plurality of transmission rollers (17); A hydraulic cylinder (9) is fixedly installed inside the right-angle positioning plate (8), a push plate (1501) is fixedly installed on the piston end of the hydraulic cylinder (9), and the push plate (1501) is fixedly installed on the outside of the sliding adjustment rod (15), and the hydraulic cylinder (9) is used to drive the sliding adjustment rod (15) to slide inside the slide groove (8021); A driving motor (8022) is fixedly mounted on the bottom of the right-angle positioning plate (8), and an output end of the driving motor (8022) is fixedly connected to a driving rod (14).

2. The device for detecting printing defects of corrugated paper boxes according to claim 1, characterized in that: A limiting slide plate (1601) is fixedly mounted on the end of the adjusting rod (16), a rectangular notch (801) is provided on the side of the right-angle positioning plate (8), the limiting slide plate (1601) is slidably mounted inside the rectangular notch (801), and a supporting spring (8011) is fixedly mounted between the limiting slide plate (1601) and the inner wall of the rectangular notch (801).

3. The device for detecting printing defects of corrugated paperboard according to claim 1, characterized in that: A bottom carrier sheet (1001) is fixedly mounted on the outer side of the guide conveyor belt (10).

4. The device for detecting printing defects of corrugated paperboard according to claim 1, characterized in that: Both sides of the conveyor belt (2) are rotatably connected to a driving shaft (3), and the driving shaft (3) is rotatably mounted inside the detection box (1). A fill light bar (601) is fixedly mounted above the bottom scanning device (6). Both sides of the scanning module (5) are mounted with a fixing plate (501), and the fixing plate (501) is fixedly mounted inside the detection box (1).

5. The device for detecting printing defects of corrugated paper boxes according to claim 1, characterized in that: A cleaning assembly is provided inside the detection box (1) for cleaning the surface of the conveyed corrugated cardboard body (4), the cleaning assembly comprising a cleaning plate frame (11), an assembly rod (13) being provided between the bottom of the cleaning plate frame (11) and the sliding adjustment rod (15), the cleaning plate frame (11) being located inside the detection box (1), and a collecting notch (1102) being provided at the bottom of the cleaning plate frame (11), a negative pressure device (7) being fixedly installed inside the detection box (1), and a corrugated connecting pipe (1101) being connected between the negative pressure device (7) and the cleaning plate frame (11).

6. A corrugated box printing defect detection device according to claim 5, characterized in that: There are two assembly rods (13) which are respectively fixedly mounted on the ends of corresponding sliding adjustment rods (15); one end of the assembly rod (13) away from the sliding adjustment rod (15) is slidably connected to the bottom of the cleaning plate frame (11).

7. The device for detecting printing defects of corrugated paper boxes according to claim 5, characterized in that: An elastic scraper (12) is fixedly mounted on the outer side of the cleaning plate frame (11); the elastic scraper (12) is installed at an angle and its end is in contact with the surface of the corrugated cardboard body (4).

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