Visual detection device for reel label

Abstract

The utility model belongs to the technical field of detection devices, and discloses a reel label visual detection device which comprises a shell formed by combining a frame and a door plate, a displayer and an alarm indicator lamp are installed on the outer side of the shell, and a visual processor and an electrical equipment compartment are installed in the shell. A visual detection device electrically connected with the visual processor is mounted in the shell, a label feeding and discharging device is mounted in the shell, the visual detection device comprises a mounting bracket, an XYZ three-axis moving module is mounted on the mounting bracket, and a camera mounting plate is mounted at the final output end of the XYZ three-axis moving module; a camera is mounted on the camera mounting plate, and a camera light source is fixed on the ZYZ axis module and can move front, back, left, right, up and down, so that the device can be suitable for detecting labels with different sizes, and large-size labels can be detected by shooting images for many times.

Description

Technical Field

[0001] This utility model belongs to the technical field of detection devices, specifically relating to a visual inspection device for roll labels. Background Technology

[0002] As a core carrier of brand image, anti-counterfeiting, and legal compliance, labels must ensure the clarity and accuracy of text (such as production date and ingredient list) and the reliability of anti-counterfeiting features (such as QR codes and laser engravings).

[0003] After the labels are printed, they need to undergo the following tests:

[0004] 1. Image and text integrity: Check whether the text and images are consistent with the design draft to avoid errors, omissions or distortions (such as missing fonts or incorrect logos).

[0005] 2. Surface defect detection: Identify appearance problems such as stains, scratches, and wrinkles.

[0006] 3. Barcode / QR code readability: Encoding compliance and scanning success rate to ensure information traceability.

[0007] Traditional inspection still relies on manual visual inspection, which is inefficient. Manual visual inspection depends on experience and is easily affected by subjective factors. The inspection standards are not uniform and cannot meet the efficiency requirements of large-scale production (the inspection volume per hour is lower than that of automated systems). Furthermore, high-precision inspection (such as microtext QR code recognition) is difficult to achieve manually. Utility Model Content

[0008] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide a roll label visual inspection device.

[0009] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0010] A roll label visual inspection device includes a housing formed by a frame and a door panel. A display and an alarm indicator are installed on the outside of the housing. A vision processor and an electrical equipment compartment are installed inside the housing. A visual inspection device electrically connected to the vision processor is installed inside the housing. A label loading and unloading device is installed inside the housing, and the position of the label loading and unloading device corresponds to the detection end of the visual inspection device.

[0011] The visual inspection device includes a mounting bracket, on which an XYZ three-axis motion module is mounted. A camera mounting plate is mounted on the final output end of the XYZ three-axis motion module, and a camera is mounted on the camera mounting plate.

[0012] The label loading and unloading device includes a base plate, on which a loading shaft, a first guide shaft, a second guide shaft, a third guide shaft, a fourth guide shaft, and a rewind shaft are mounted. Each of the loading shaft, the first guide shaft, the second guide shaft, the third guide shaft, the fourth guide shaft, and the rewind shaft is connected to a sleeve by a bearing. A leveling mechanism is installed between the first guide shaft and the second guide shaft on the base plate. A support plate is installed between the second guide shaft and the third guide shaft on the base plate. A guide strip is vertically installed on the support plate. A first motor is installed at the power end of the rewind shaft.

[0013] Furthermore, the XYZ three-axis motion module includes an X-axis motion module, a Y-axis motion module, and a Z-axis motion module. The X-axis motion module is mounted on the output end of the Y-axis motion module, and the Z-axis motion module is mounted on the output end of the X-axis motion module. A guide rail is slidably mounted on the end of the X-axis motion module, and the guide rail is parallel to the Y-axis motion module. This design enables three-axis motion while ensuring stable movement.

[0014] Furthermore, the camera mounting plate is equipped with a first reflector, and the first reflector is fixedly mounted with two light sources in an adjustable rotation angle. The two light sources are located on both sides of the camera, and a second reflector is mounted on the other end of each of the two light sources. The two light sources are fixedly mounted on the second reflector in an adjustable rotation angle. This design ensures brightness, thereby ensuring the accuracy of the detection data, and can be effectively used and detected even in relatively dark environments.

[0015] Furthermore, the leveling mechanism includes a leveling sleeve and a second motor mounted on the substrate. The output end of the second motor is connected to a leveling shaft, which is in close contact with the leveling sleeve. With this design, the visual inspection device can capture a clearer image by leveling the label paper through the effect of the leveling shaft and the leveling sleeve, thereby improving the recognition accuracy and reducing missed detections or misjudgments caused by wrinkles.

[0016] Furthermore, the housing is equipped with a keyboard and mouse tray, a design that allows for convenient placement of the mouse and keyboard.

[0017] The beneficial effects of using this utility model are as follows:

[0018] High-resolution industrial cameras capture images of label surfaces, and algorithms are used to eliminate noise and enhance edge features, improving detection accuracy. Character image recognition and image comparison technologies verify the readability and data consistency of barcodes / QR codes. Deep learning algorithms detect printing defects, identifying issues such as missing, misaligned, and blurred text, and perform real-time comparisons with standard templates to ensure content accuracy, achieving millisecond-level response. The combination of industrial cameras and AI algorithms enables millisecond-level defect identification with an accuracy rate exceeding 99%. The online real-time inspection system is embedded in the printing production line, supporting 100% full inspection, processing tens of thousands of pieces per hour, and reducing labor costs by more than 30%.

[0019] The camera light source is fixed on the ZYZ axis module and can move forward, backward, left, right, up, and down. It can be used to detect labels of different sizes. For large labels, multiple images can be taken for detection.

[0020] Equipped with a label rewinding device, the motor drives the rewinding shaft to rotate, and the label can be automatically rewound after inspection. The device can be embedded in the label printing production line for online real-time inspection, supporting 100% full inspection, with a processing capacity of tens of thousands of pieces per hour, reducing labor costs by more than 30%. Attached Figure Description

[0021] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0022] Figure 1 This is a schematic diagram of the external structure of an embodiment of the roll label visual inspection device of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal layout structure of an embodiment of the roll label visual inspection device of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a visual inspection device according to an embodiment of the present invention, which is a roll label visual inspection device.

[0025] Figure 4 This is a schematic diagram of the label loading and unloading device structure of an embodiment of the roll label visual inspection device of this utility model;

[0026] The symbols for the main components are explained below:

[0027] Frame 1; Door panel 2; Housing 3; Display 4; Alarm indicator light 5; Vision processor 6; Electrical equipment compartment 7; Vision inspection device 8; Label loading and unloading device 9; Keyboard and mouse tray 10;

[0028] Mounting bracket 81; XYZ three-axis moving module 82; camera mounting plate 83; camera 84; first reflector 85; light source 86; second reflector 87;

[0029] X-axis moving module 821; Y-axis moving module 822; Z-axis moving module 823; Guide rail 824;

[0030] Substrate 91; Feeding shaft 92; First guide shaft 93; Second guide shaft 94; Third guide shaft 95; Fourth guide shaft 96; Rewind shaft 97; Sleeve 98; Leveling mechanism 99; Pallet 910; Guide bar 911; First motor 912;

[0031] Leveling sleeve 991; second motor 992; leveling shaft 993. Detailed Implementation

[0032] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] like Figures 1-4 As shown, the present invention provides a roll label visual inspection device, which includes a housing 3 formed by a frame 1 and a door panel 2. A display 4 and an alarm indicator 5 are installed on the outside of the housing 3. A vision processor 6 and an electrical equipment compartment 7 are installed inside the housing 3. A vision inspection device 8 electrically connected to the vision processor 6 is installed inside the housing 3. A label loading and unloading device 9 is installed inside the housing 3. The position of the label loading and unloading device 9 corresponds to the detection end of the vision inspection device 8.

[0034] The visual inspection device 8 includes a mounting bracket 81, on which an XYZ three-axis motion module 82 is mounted. A camera mounting plate 83 is mounted on the final output end of the XYZ three-axis motion module 82, and a camera 84 is mounted on the camera mounting plate 83.

[0035] The label loading and unloading device 9 includes a base plate 91. The base plate 91 is equipped with a loading shaft 92, a first guide shaft 93, a second guide shaft 94, a third guide shaft 95, a fourth guide shaft 96, and a rewind shaft 97. Each of the loading shaft 92, the first guide shaft 93, the second guide shaft 94, the third guide shaft 95, the fourth guide shaft 96, and the rewind shaft 97 is connected to a sleeve 98 via bearings. A leveling mechanism 99 is installed between the first guide shaft 93 and the second guide shaft 94 on the base plate 91. A support plate 910 is installed between the second guide shaft 94 and the third guide shaft 95 on the base plate 91. Guide bars 911 are vertically installed on the support plate 910. A first motor 912 is installed at the power end of the rewind shaft 97.

[0036] The preferred XYZ three-axis motion module 82 includes an X-axis motion module 821, a Y-axis motion module 822, and a Z-axis motion module 823. The X-axis motion module 821 is mounted on the output end of the Y-axis motion module 822, and the Z-axis motion module 823 is mounted on the output end of the X-axis motion module 821. A guide rail 824 is slidably mounted on the end of the X-axis motion module 821. The guide rail 824 is parallel to the Y-axis motion module 822. This design enables three-axis movement while ensuring stable motion.

[0037] The preferred camera mounting plate 83 is equipped with a first reflector 85. The first reflector 85 is fixedly mounted with two light sources 86 in an adjustable rotation angle. The two light sources 86 are located on both sides of the camera 84. The other end of the two light sources 86 is mounted with a second reflector 87. The two light sources 86 are fixedly mounted on the second reflector 87 in an adjustable rotation angle. This design ensures brightness, thereby ensuring the accuracy of the detection data, and can be effectively used and detected even in darker environments.

[0038] The preferred leveling mechanism 99 includes a leveling sleeve 991 mounted on the base plate 91 and a second motor 992. The output end of the second motor 992 is connected to a leveling shaft 993, which is in close contact with the leveling sleeve 991. With this design, the visual inspection equipment can capture a clearer image by leveling the label paper through the effect of the leveling shaft 993 and the leveling sleeve 991, thereby improving the recognition accuracy and reducing missed detections or misjudgments caused by wrinkles.

[0039] The preferred housing 3 is equipped with a keyboard and mouse tray 10, a design that allows for convenient placement of the mouse and keyboard.

[0040] In this embodiment, when using a roll label visual inspection device, the label to be inspected is installed on the label loading and unloading device 9, and then the position of the visual inspection device 8 is controlled to align with the label on the label loading and unloading device 9. The camera 84 on the visual inspection device 8 is used to identify and inspect the label. After the inspection is completed, the label can be loaded and unloaded from the label loading and unloading device 9.

[0041] Specifically, the label is placed on the roll 98 on the feeding shaft 92, and then pulled out for a section. After passing through the roll 98 on the first guide shaft 93, the second guide shaft 94, the third guide shaft 95 and the fourth guide shaft 96 in sequence, it is wound on the roll 98 on the return shaft 97. At this time, the first motor 912 can be run to drive the sleeve 98 to rotate and check whether it can pull the roll label on the feeding shaft 92 to rotate. Then, the label tape located between the second guide shaft 94 and the third guide shaft 95 is placed between the guide strips 911 on the tray 910. Preferably, the tray 910 is located where the camera 84 acquires information. Furthermore, the leveling mechanism 99 between the first guide shaft 93 and the second guide shaft 94 can level the label tape that has passed between the leveling sleeve 991 and the leveling shaft 993. The second motor 992 gives an external force to the leveling shaft 993, which is more conducive to leveling and reduces the probability of missed detection or misjudgment caused by wrinkles.

[0042] The camera 84 is moved to the upper side of the tray 910 by the XYZ three-axis moving module 82, and the light source 86 is used to acquire data from the labels on the label tape. After acquisition, the first motor 912 runs, so that the camera can acquire the label information of the next segment, until all the label data has been detected.

[0043] The movable label tape on roll 98 allows this device to be adapted to the use of roll labels of different widths;

[0044] The following points require further explanation and optimization:

[0045] Two baffles are installed on the roll 98, which can limit the movement and offset of the label tape while also providing a certain guiding effect;

[0046] For large labels, the camera 84 can take multiple images for detection by moving the XYZ three-axis motion module 82. The operation of the XYZ three-axis motion module 82 is controlled by the PLC to coordinate the label movement and the camera's image capture.

[0047] Camera 84 uses a high-resolution industrial camera to capture images of the label surface and uses algorithms to eliminate noise, enhance edge features, and improve detection accuracy.

[0048] An annular hole is made on the first reflector 85 and the second reflector 87 to adjust the angle of the light source 86, so as to adjust the direction of the light according to actual needs and reduce the interference of reflected light on the image.

[0049] The Vision Processor 6 processing system is equipped with a high-performance vision processor. Image comparison and other technologies are used to verify the readability and data consistency of barcodes / QR codes. Deep learning algorithms are used to detect printing defects, identify problems such as missing, misaligned, and blurred text, and compare them with standard templates in real time to ensure content accuracy and achieve millisecond-level response. The industrial camera is combined with AI algorithms to achieve millisecond-level defect recognition with a detection accuracy rate of over 99%.

[0050] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A roll label visual inspection device, comprising a housing (3) formed by a frame (1) and a door panel (2), wherein a display (4) and an alarm indicator (5) are mounted on the outside of the housing (3), and a vision processor (6) and an electrical equipment compartment (7) are mounted inside the housing (3), characterized in that: The housing (3) is equipped with a vision inspection device (8) that is electrically connected to the vision processor (6), and the housing (3) is equipped with a label loading and unloading device (9), the label loading and unloading device (9) being positioned corresponding to the detection end of the vision inspection device (8); The visual inspection device (8) includes a mounting bracket (81), on which an XYZ three-axis moving module (82) is mounted. A camera mounting plate (83) is mounted on the final output end of the XYZ three-axis moving module (82), and a camera (84) is mounted on the camera mounting plate (83). The label loading and unloading device (9) includes a base plate (91). The base plate (91) is equipped with a loading shaft (92), a first guide shaft (93), a second guide shaft (94), a third guide shaft (95), a fourth guide shaft (96), and a rewind shaft (97). Each of the loading shaft (92), the first guide shaft (93), the second guide shaft (94), the third guide shaft (95), the fourth guide shaft (96), and the rewind shaft (97) is connected to a sleeve (98) by bearings. A leveling mechanism (99) is installed between the first guide shaft (93) and the second guide shaft (94) on the base plate (91). A support plate (910) is installed between the second guide shaft (94) and the third guide shaft (95) on the base plate (91). A guide strip (911) is vertically installed on the support plate (910). A first motor (912) is installed at the power end of the rewind shaft (97).

2. The roll label visual inspection device according to claim 1, characterized in that: The XYZ three-axis motion module (82) includes an X-axis motion module (821), a Y-axis motion module (822), and a Z-axis motion module (823). The X-axis motion module (821) is installed at the output end of the Y-axis motion module (822), and the Z-axis motion module (823) is installed at the output end of the X-axis motion module (821). A guide rail (824) is slidably matched at the end of the X-axis motion module (821), and the guide rail (824) is parallel to the Y-axis motion module (822).

3. The roll label visual inspection device according to claim 2, characterized in that: The camera mounting plate (83) is equipped with a first reflector (85). The first reflector (85) is fixedly mounted with two light sources (86) with adjustable rotation angle. The two light sources (86) are located on both sides of the camera (84). The other end of the two light sources (86) is equipped with a second reflector (87). The two light sources (86) are fixedly mounted on the second reflector (87) with adjustable rotation angle.

4. The roll label visual inspection device according to claim 3, characterized in that: The leveling mechanism (99) includes a leveling sleeve (991) mounted on the substrate (91) and a second motor (992). The output end of the second motor (992) is connected to a leveling shaft (993), which is in close contact with the leveling sleeve (991).

5. The roll label visual inspection device according to claim 4, characterized in that: The housing (3) is equipped with a keyboard and mouse tray (10).

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