A rapid detection device for label printing defects

Abstract

The present invention discloses a rapid detection device for label printing defects, which relates to the field of defect detection. The present invention is provided with a dustproof bin, which effectively reduces the impact of external dust and other floating objects on the label and the detection head. Before the label enters the dustproof bin, the second air duct and the air guide plate are used to pre-treat the label surface to blow away some floating objects. At the same time, the first dust removal pipe absorbs the blown floating objects to prevent them from diffusing in the environment and then being adsorbed on the label or optical components again. When entering the dustproof bin, the third air duct and the exhaust trough perform a secondary cleaning on the label, further reducing the possibility of the label carrying debris. In addition, the dustproof bin continuously exhausts air to the outside to form a wind wall, blocking the entry of external floating objects, reducing the impact of dust on the optical properties of the label, making the image obtained by the detection head clearer, thereby improving the detection accuracy and being able to more accurately detect tiny defects on the label.

Description

Technical Field

[0001] The present invention relates to the field of defect detection, and in particular to a device for quickly detecting defects in label printing. Background Art

[0002] With the development of society, people are able to produce more and more commodities. In order to facilitate the circulation and unified management of commodities, people invented barcodes to identify the "identity" of each commodity. This barcode is mainly composed of black and white vertical lines. The content of the barcode is generally the company's brand logo, serial number logo, packaging logo, barcode logo, etc. The quality of barcode printing will not only affect the subsequent commodity statistics, but also reflect the level of control of a commodity provider over its own product quality. Therefore, the entire label tape needs to be inspected for defects using label printing defect rapid detection equipment after production.

[0003] The current rapid detection equipment for label printing defects is mainly based on the principle of optical detection. It uses a high-precision camera or sensor to quickly scan the label tape to obtain the image information of the label tape, and then uses advanced image processing algorithms to analyze and process the image to identify whether the text, pattern, color, etc. on the label tape meet the preset standards, thereby detecting whether there are defects in the label tape. It mainly includes a conveying system, optical detection components, image processing and analysis system and control system. It has high-precision and rapid detection efficiency and can detect a large number of label tapes in a short time, greatly improving production efficiency. With its high-resolution optical system and advanced image processing algorithm, it can detect tiny defects, and the detection accuracy can reach millimeters or even smaller levels, effectively ensuring the quality of the label tape.

[0004] However, in the actual production environment, there are often various floating dust and other floating objects in the air. Since the label belt is in a relatively open space during the transportation process, these floating objects are easily adsorbed on the label surface. At the same time, since the optical detection components are usually in a relatively exposed position, they are also prone to become the gathering place of floating dust and other floating objects. When the floating dust is adsorbed on the label, the operation of the conveying equipment makes the label belt start to move. This process is also likely to cause floating dust and other debris to float, increasing the probability of floating dust and other floating objects being adsorbed on the optical component lens. Dust and other floating objects will affect the optical properties of the label, such as color accuracy, contrast, etc. At the same time, for optical detection equipment, the originally clear The label image may become blurred due to the obstruction of floating dust, making it difficult for the detection algorithm to accurately identify the text, patterns and other information on the label, thereby increasing the risk of misjudgment and missed judgment. When floating dust is adsorbed on the detection lens of the optical detection component, it will directly affect the light transmittance and imaging quality of the lens. The floating dust on the lens surface will cause the transmitted light to scatter and attenuate, causing the acquired label image to become blurred, dim, or even distorted. This will not only reduce the accuracy of detection, making it difficult to detect tiny defects that could have been detected, but may also cause the equipment to falsely report defects, increasing unnecessary cleaning and review work. Therefore, it is necessary to optimize the existing label printing defect rapid detection equipment. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a label printing defect rapid detection device to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a label printing defect rapid detection device, comprising a mounting base, a label and a detection head, wherein the detection head is mounted on the mounting base via a mounting frame;

[0007] The side wall of the mounting seat is equipped with a detection seat corresponding to the label, and a dustproof bin is installed on the mounting seat. The detection head and the detection seat are both located in the dustproof bin, and the outer wall of the dustproof bin is provided with a mounting groove for mounting the label;

[0008] A first air duct corresponding to the detection head is installed in the dustproof bin, and a nozzle with an opening facing the detection head is installed at the end of the first air duct, and an air supply hood corresponding to the first air duct is installed on the outer wall of the dustproof bin;

[0009] The outer wall of the mounting base is provided with a second air duct for cleaning labels, and an air-permeable roller for guiding labels is rotatably mounted on the outer wall of the second air duct. An air supply slot is provided on the outer wall of the second air duct, and an air guide plate corresponding to the opening position of the air supply slot is mounted on the outer wall of the second air duct;

[0010] The outer wall of the mounting base is provided with a first dust removal pipe and a second dust removal pipe for cleaning labels, and the outer wall on the other side of the mounting base is provided with an exhaust hood connected to the first dust removal pipe and the second dust removal pipe;

[0011] A protective wheel affixed to the label is mounted on the top inner wall of the mounting groove, and a movable seat is rotatably mounted on the bottom inner wall of the mounting groove. A sealing wheel affixed to the label is rotatably mounted on the top of the movable seat. When the label is not located in the dustproof bin, the outer wall of the sealing wheel affixes to the outer wall of the protective wheel.

[0012] Exhaust slots connected to the top of the mounting slot are provided in the outer walls on both sides of the dustproof bin, and third air ducts connected to the air supply hood are installed on the outer walls on both sides of the dustproof bin.

[0013] By adopting the above technical solution, the dustproof bin effectively reduces the impact of external dust and other floating objects on the label and the detection head. Before the label enters the dustproof bin, it will be cleaned multiple times, further reducing the possibility of the label carrying debris. In addition, the dustproof bin continuously exhausts air to the outside to form a wind wall, which can block the entry of external floating objects, reduce the impact of dust on the optical properties of the label, and make the image obtained by the detection head clearer, thereby improving the detection accuracy and being able to more accurately detect tiny defects on the label.

[0014] Furthermore, a door is rotatably mounted on the outer wall of the dustproof bin, a sealing structure is provided at the position where the door and the outer wall of the dustproof bin are in contact, and an observation window is provided on the outer wall of the door.

[0015] By adopting the above technical solution and the setting of the bin door, it is convenient for the user to put the label into the dustproof bin, and it is also convenient for the user to observe and subsequently maintain the parts in the dustproof bin.

[0016] Furthermore, two groups of mounting grooves are symmetrically installed on the outer walls on both sides of the dustproof bin, and the side openings of the mounting grooves pass through the outer wall where the dustproof bin is attached to the bin door, and the inner walls of the mounting grooves are designed to be inclined toward the outer bottom of the dustproof bin.

[0017] By adopting the above technical solution, it is ensured that the label can be smoothly placed into the installation groove after the compartment door is opened. At the same time, the shape design of the installation groove can effectively reduce the probability of floating objects entering the dustproof compartment.

[0018] Furthermore, the inner diameter of the air-permeable roller is smaller than the outer diameter of the second air duct, and the distance between the inner wall of the air-permeable roller and the outer wall of the air guide plate is 1MM. The air-permeable roller is rotatably connected to the second air duct through a bearing, and the opening width on one side of the air guide plate is smaller than the opening width of the air supply slot.

[0019] By adopting the above technical solution, it is ensured that the breathable roller can rotate smoothly outside the second air duct. At the same time, the design of the air guide plate will not affect the breathable roller, ensuring that the label can be smoothly guided and the label surface can be smoothly cleaned.

[0020] Furthermore, a support roller located below the label is rotatably mounted on the outer wall of the mounting seat, and the support roller is located outside the second air duct.

[0021] By adopting the above technical solution, under the action of the supporting roller, the airflow blown out of the second air duct is prevented from affecting the subsequent movement of the label.

[0022] Furthermore, the air supply hood is connected to an external blower, and the diameter of the external interface position of the air supply hood is larger than the sum of the diameter of the first air duct, the diameter of the second air duct and the width of the two groups of the third air ducts.

[0023] By adopting the above technical solution, it is ensured that the air supply hood has the ability to synchronously supply air to the first air duct, the second air duct and the two groups of the third air ducts.

[0024] Furthermore, the first dust removal pipe and the second dust removal pipe are respectively arranged above and below the label, and the outer walls of the first dust removal pipe and the second dust removal pipe are both provided with exhaust ports for dust collection.

[0025] By adopting the above technical solution, under the action of the first dust removal pipe and the second dust removal pipe, the surrounding environment during the label transportation process is further purified, and the probability of floating objects remaining on the label is further reduced.

[0026] Furthermore, the exhaust hood is connected to an external exhaust fan, the diameter of the exhaust hood is larger than the combined width of the first dust collection pipe and the second dust collection pipe, and a section of the second dust collection pipe is located below the label, and a section with an exhaust port is located outside the label, and the positions of the exhaust ports of the first dust collection pipe and the second dust collection pipe are located in the same plane, and guide wheels attached to the labels are installed at the bottom of the first dust collection pipe and the top of the second dust collection pipe.

[0027] By adopting the above technical solution, the guide wheel can support the label, thereby preventing the suction force generated by the bottom of the first dust removal pipe and the second dust removal pipe during use from seriously affecting the movement of the label.

[0028] Furthermore, a movable groove for the movable seat and the sealing wheel to move is provided in the dustproof bin, and an elastic member for pushing the movable seat is provided in the movable groove.

[0029] By adopting the above technical solution, it is ensured that the movable seat and the sealing wheel can operate smoothly in the dustproof bin, and at the same time, under the action of the elastic member, it is ensured that the movable seat and the sealing wheel have the power to rotate toward the protection wheel.

[0030] Furthermore, the width of the bottom opening of the exhaust slot is smaller than the width inside the exhaust slot, and the inner wall of the exhaust slot near the bottom opening is designed to be inclined toward the outside of the dustproof bin, and the bottom opening of the exhaust slot is located outside the protective wheel.

[0031] By adopting the above technical solution, interference between the exhaust slot and the protection wheel is prevented, while ensuring the exhaust slot's effect of secondary cleaning of the label.

[0032] In summary, the present invention mainly has the following beneficial effects:

[0033] 1. The present invention effectively reduces the impact of external dust and other floating objects on labels and detection heads by providing a dustproof bin. Before the label enters the dustproof bin, the second air duct and the air guide plate are used to pre-treat the label surface to blow away some floating objects. At the same time, the first dust removal pipe absorbs the blown floating objects to prevent them from diffusing in the environment and then being adsorbed on the label or optical components again. When entering the dustproof bin, the third air duct and the exhaust trough perform a secondary cleaning on the label, further reducing the possibility of the label carrying debris. In addition, the dustproof bin continuously exhausts air to the outside to form a wind wall, which blocks the entry of external floating objects, reduces the impact of dust on the optical properties of the label, makes the image obtained by the detection head clearer, thereby improving the detection accuracy and being able to more accurately detect tiny defects on the label.

[0034] 2. The present invention reduces the adsorption of floating objects such as dust on the label surface and the detection head lens. The detection algorithm can more accurately identify text, patterns and other information on the label, and reduces the risk of misjudgment and missed judgment due to blurred image caused by dust obstruction. At the same time, the first air duct cleans and cools the detection head, ensuring the light transmittance and imaging quality of the detection head lens, avoiding problems such as blurred, dim or distorted image caused by scattering and attenuation of light due to dust on the lens surface, further reducing the possibility of misjudgment and missed judgment, and improving the reliability of the detection results.

[0035] 3. The effective protection and cleaning of the detection head and the stable detection environment of the present invention help to extend the service life of the equipment, reduce the number of equipment failures and maintenance caused by dust interference, improve the overall stability and operating efficiency of the equipment, and enable it to continuously and stably perform high-quality detection of labels. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 A schematic diagram of the three-dimensional structure from another perspective of the present invention;

[0038] Figure 3 This is a schematic diagram of the three-dimensional structure of the warehouse door after opening in the present invention;

[0039] Figure 4 This is a schematic diagram of the planar structure of the present invention after the door is opened;

[0040] Figure 5 This is a schematic diagram of the three-dimensional structure of the dustproof bin after side section in the present invention;

[0041] Figure 6 This is a schematic diagram of the three-dimensional structure of the air supply cover after being cut open in the present invention;

[0042] Figure 7 Schematic diagram of the three-dimensional structure of the detection head and the first air duct in the present invention;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the first air duct after side section in the present invention;

[0044] Figure 9 Schematic diagram of the three-dimensional structure of the second air duct, the first dust removal duct and the second dust removal duct in the present invention;

[0045] Figure 10 This is a schematic diagram of the three-dimensional structure of the second air duct, the first dust removal duct, and the second dust removal duct after side section in the present invention;

[0046] Figure 11 This is a schematic diagram of the three-dimensional structure of the dustproof bin after partial sectioning in the present invention;

[0047] Figure 12 For the present invention Figure 11 Enlarged view of point A in the middle;

[0048] Figure 13 It is a schematic diagram of the three-dimensional structure of the movable seat and the sealing wheel in the present invention.

[0049] In the figure: 1. Mounting base; 2. Label; 3. Detection head; 31. Mounting bracket; 4. Detection base; 5. First air duct; 51. Nozzle; 6. Dustproof bin; 61. Bin door; 7. Air supply hood; 8. Mounting slot; 9. Second air duct; 91. Air supply slot; 92. Air guide plate; 93. Support roller; 10. Breathable roller; 11. Exhaust hood; 12. First dust removal pipe; 121. Second dust removal pipe; 122. Exhaust port; 123. Guide wheel; 13. Protective wheel; 14. Movable base; 15. Sealing wheel; 16. Movable slot; 17. Exhaust slot; 18. Third air duct. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention.

[0051] The core purpose of the present invention is to provide a rapid detection device for label printing defects, which effectively solves a series of problems in existing rapid detection devices for label printing defects in actual production environments, such as floating dust and other floating objects in the air are easily adsorbed on the label surface and optical detection components, thereby leading to reduced detection accuracy, increased risks of misjudgment and missed judgment, and ensuring the efficiency and accuracy of label printing defect detection.

[0052] The following describes an embodiment of the present invention based on its overall structure.

[0053] This embodiment provides a label printing defect rapid detection device, such as Figure 1 - Figure 13 As shown, the core structure of the device is mainly composed of a mounting base 1, a tag 2 and a detection head 3;

[0054] Among them, the mounting base 1 serves as the basic supporting component of the entire equipment, providing a stable installation platform for other components. At the same time, the detection head 3 is installed on the mounting base 1 through the mounting frame 31, and its position corresponds to the detection base 4, ensuring that the detection head 3 can accurately scan and analyze the label 2 during the detection process. At the same time, the detection base 4 is installed on the side wall of the mounting base 1, and works together with the detection head 3 to provide a stable detection area for the detection of the label 2.

[0055] The dustproof bin 6 in this embodiment is installed on the mounting base 1, wrapping the detection head 3 and the detection base 4 therein to form a relatively closed detection environment. At the same time, a mounting groove 8 is opened on the outer wall of the dustproof bin 6, which is the channel for the tag 2 to enter and exit the dustproof bin 6. Its design facilitates the installation and transportation of the tag 2, and also minimizes the possibility of external dust entering the dustproof bin 6.

[0056] At the same time, the first air duct 5 in this embodiment is installed in the dustproof bin 6 and corresponds to the detection head 3. The nozzle 51 at its end opens toward the lens position of the detection head 3. The air supply hood 7 is installed on the outer wall of the dustproof bin 6 and is connected to the first air duct 5 to provide a wind source for the first air duct 5. During the operation of the equipment, the air supply hood 7 introduces the airflow of the external blower, and the airflow flows to the nozzle 51 through the first air duct 5. The airflow ejected by the nozzle 51 cleans the detection head 3 in real time to prevent floating objects from adhering to the lens of the detection head 3 during the detection process. At the same time, the airflow can also play a certain cooling role to ensure that the detection head 3 maintains stable performance during long-term work. This coordination method effectively protects the detection head 3, ensures the clarity and accuracy of the image it acquires, and thus improves the detection accuracy.

[0057] The second air duct 9 in this embodiment is installed on the outer wall of the mounting base 1. Its main function is to pre-process the label 2. The outer wall of the second air duct 9 is rotatably installed with a breathable roller 10. The inner diameter of the breathable roller 10 is smaller than the outer diameter of the second air duct 9, and the distance between its inner wall and the outer wall of the air guide plate 92 is 1MM. The opening width of one side of the air guide plate 92 is smaller than the opening width of the air supply slot 91. When the air flow enters the second air duct 9, it flows through the air supply slot 91 to the air guide plate 92. The air guide plate 92 guides the air flow to the direction of the breathable roller 10. The breathable roller 10 plays a role in the process of conveying the label 2. At the same time, the air flow passes through the breathable roller 10 and blows toward the label 2, blowing up some floating objects on the surface of the label 2. At this time, the first dust removal pipe 12 located opposite the second air duct 9 comes into play. An exhaust port 122 is opened on its outer wall. The external exhaust fan connected to the exhaust hood 11 generates suction to suck away the blown floating objects. The cooperation between the second air duct 9, the breathable roller 10, and the first dust removal pipe 12 effectively reduces dust and other debris on the surface of the label 2, reducing the risk of detection errors caused by dust affecting the optical properties of the label 2.

[0058] Furthermore, a support roller 93 located below the label 2 is rotatably mounted on the outer wall of the mounting base 1, and the support roller 93 is located on the outside of the second air duct 9. When the second air duct 9 is running, the air guide plate 92 guides the air flow toward the breathable roller 10. When the air flow passes through the breathable roller 10 and blows toward the label 2, the support roller 93 will support the label 2 at this time, thereby preventing the air flow from blowing the label 2 downward and affecting the movement of the label 2.

[0059] Exemplarily, the third air duct 18 is installed on the outer walls on both sides of the dustproof bin 6 and is connected to the air supply hood 7. It transmits the airflow provided by the air supply hood 7 to the exhaust slot 17. The exhaust slot 17 is opened in the outer walls on both sides of the dustproof bin 6 and is connected to the top of the installation slot 8. Its bottom opening is located on the outside of the protective wheel 13. The opening width is smaller than the internal width and the inner wall close to the bottom opening is inclined toward the outside of the dustproof bin 6. After the airflow enters the exhaust slot 17 through the third air duct 18, it is blown from the bottom opening of the exhaust slot 17 to the label 2 entering the installation slot 8, and the label 2 that is about to enter the dustproof bin 6 is cleaned twice. This process further prevents the label 2 from carrying floating objects, dust and other debris into the dustproof bin 6, providing a cleaner label 2 surface for subsequent precise detection in the dustproof bin 6, and effectively ensuring the accuracy of the detection.

[0060] When the label 2 is not in the dustproof bin 6, the outer wall of the sealing wheel 15 is in contact with the outer wall of the protection wheel 13, forming a relatively closed state, thereby reducing the passage of external dust and other floating objects from the installation groove 8 into the dustproof bin 6. When the label 2 needs to be installed, the movable seat 14 is manually pushed to separate the sealing wheel 15 from the protection wheel 13. At this time, the elastic member is pressurized, and the label 2 is placed between the sealing wheel 15 and the protection wheel 13, and then the bin door 61 is closed. The movable seat 14 drives the sealing wheel 15 to rotate in the direction of the protection wheel 13 under the action of the elastic member, and cooperates with the protection wheel 13 to squeeze the label 2 again. This cooperation method not only facilitates the installation of the label 2, but also effectively reduces the probability of external air entering the dustproof bin 6 during the operation of the equipment, further enhancing the dustproof effect of the dustproof bin 6, ensuring the stability of the detection environment, and being conducive to improving the detection accuracy;

[0061] At the same time, guide wheels 123 attached to the label 2 are installed at the bottom of the first dust removal tube 12 and the top of the second dust removal tube 121, so that when the floating objects are extracted from the bottom of the first dust removal tube 12 and the second dust removal tube 121, the guide wheels 123 will support the label 2, thereby preventing the suction force generated by the bottom of the first dust removal tube 12 and the second dust removal tube 121 during use from seriously affecting the movement of the label 2.

[0062] In some examples, the elastic member is a torsion spring installed in the movable groove 16, and its two ends are respectively connected to the outer wall of the movable seat 14 and the inner wall of the movable groove 16, so that when the user pushes the movable seat 14, the torsion spring will be in a stressed state. Once the user releases the restriction on the movable seat 14, the torsion spring will be released, providing the movable seat 14 with rotational power.

[0063] Of course, in other examples, the elastic member may also be a spring, elastic rod or other tool installed in the movable groove 16 and connected to the movable seat 14. In the embodiment, the specific composition of the elastic member is not directly and completely limited.

[0064] Exemplarily, the first dust removal pipe 12 and the second dust removal pipe 121 are respectively arranged above and below the tag 2, and are both connected to the exhaust hood 11. At the same time, the exhaust hood 11 is connected to the external exhaust fan. The outer walls of the first dust removal pipe 12 and the second dust removal pipe 121 are provided with exhaust ports 122, and the positions of the exhaust ports 122 of the two are located in the same plane. During the operation of the equipment, the exhaust fan works to generate suction in the exhaust hood 11, and the exhaust ports 122 of the first dust removal pipe 12 and the second dust removal pipe 121 are used to adsorb floating objects in the surrounding environment. When the first dust removal pipe 12 and the second air duct 9 pre-treat the tag 2, the first dust removal pipe 12 promptly absorbs the blown floating objects to prevent them from being adsorbed to the tag 2 again or affecting the detection head 3 after spreading in the environment;

[0065] At the same time, the top view and side view cross-sections of the second dust removal pipe 121 are both L-shaped, so that one section of the second dust removal pipe 121 is located below the label 2, and the section with the exhaust port 122 is located outside the label 2, which can comprehensively clean the floating objects around the label 2. The cooperation between the two and the exhaust hood 11 effectively purifies the air environment around the equipment, reduces the interference of dust and other debris on the label 2 and the detection process, and reduces the risk of misjudgment and missed judgment.

[0066] It should be emphasized that the number of the first cleaning components consisting of the second air duct 9, the air supply trough 91, the air guide plate 92, the support roller 93, the air permeable roller 10, the exhaust hood 11, the first dust removal pipe 12 and the second dust removal pipe 121, and the exhaust port 122 is not fixed. Multiple groups can be set on the mounting base 1, and the installation positions of the second air duct 9, the first dust removal pipe 12 and the second dust removal pipe 121 are not completely limited. Among the multiple groups of cleaning components, there can also be a group of second air ducts 9 and first dust removal pipes 12 set below the label 2 to process the other side of the label 2. This embodiment does not completely limit this.

[0067] Through the careful design and close coordination between the above components, the label printing defect rapid detection equipment of the present invention can provide a stable and clean working environment for label 2 printing defect detection in a complex production environment, significantly improve the detection accuracy, reduce the risk of misjudgment and missed judgment, and thus improve the overall level of label 2 printing quality detection.

[0068] The working principle of the present invention is as follows: when the device is used to detect the tag 2;

[0069] The first step is to make preliminary preparations. First, you need to start the external blower and exhaust fan to prevent a large amount of floating objects from floating onto the detection head 3 after the compartment door 61 is opened later. Then, open the compartment door 61 to expose the opening of the installation slot 8. At this time, insert the label 2 into the dustproof compartment 6 through the installation slot 8. During the installation process, manually push the movable seat 14 to separate the sealing wheel 15 from the protection wheel 13. At this time, the elastic member will be in a compressed state, and then place the label 2 between the sealing wheel 15 and the protection wheel 13. Then close the compartment door 61. When the user does not apply pressure to the movable seat 14, the movable seat 14 will rotate under the action of the elastic member, driving the sealing wheel 15 to rotate in the direction of the protection wheel 13, so that the sealing wheel 15 cooperates with the protection wheel 13 under the action of the movable seat 14 to squeeze the label 2 located between the sealing wheel 15 and the protection wheel 13, thereby reducing the opening size of the installation slot 8 and reducing the probability of external air entering the dustproof compartment 6.

[0070] In the second step, the winding and unwinding devices on both sides are started, and the detection head 3 starts to operate along with the winding and unwinding devices on both sides. The detection head 3 will quickly detect the label 2 passing through the detection seat 4;

[0071] During this process, the air supply hood 7 will provide wind support to the first air duct 5, the second air duct 9 and the third air duct 18. The first air duct 5 will guide the flowing wind in the direction of the nozzle 51 to clean and cool the detection head 3, and prevent floating objects from adhering to the lens of the detection head 3. The wind in the second air duct 9 will flow to the air guide plate 92 through the air supply slot 91, so that the wind is blown toward the label 2 under the guidance of the air guide plate 92, and pre-treat the surface of the label 2 that has not entered the dustproof bin 6. At the same time, the first dust removal pipe 12 opposite the second air duct 9 will suck away the floating objects blown up from the label 2 by the second air duct 9, further preventing the floating objects from floating around in the working environment. At the same time, the second dust removal pipe 121 located on the side of the label 2 will also simultaneously extract the floating objects, further preventing the floating objects from floating around in the working environment.

[0072] At the same time, the third air duct 18 receives the wind support from the air supply cover 7, and transmits the flowing air to the exhaust slot 17. The air is blown toward the label 2 below the exhaust slot 17 and into the mounting slot 8, thereby performing a secondary cleaning on the label 2 about to enter the dustproof bin 6, further preventing the label 2 entering the dustproof bin 6 from carrying floating objects, dust and other debris, and further ensuring the accuracy of subsequent detection.

[0073] Moreover, in the process of the first air duct 5 continuously blowing air into the dustproof bin 6, the bin door 61 will close the opening position of the dustproof bin 6, so that at this time there is only a gap at the position where the sealing wheel 15 and the protective wheel 13 are not attached to the label 2. As the first air duct 5 continues to blow air into the dustproof bin 6, the gas inside the dustproof bin 6 will flow outward quickly through the gap between the sealing wheel 15 and the protective wheel 13. The gas flowing here cooperates with the gas ejected from the exhaust slot 17 to form an outward-flowing wind wall, thereby blocking external floating objects and further preventing external floating objects, dust and other debris from entering the dustproof bin 6. At the same time, since the dustproof bin 6 continues to exhaust air outward, it can further prevent floating objects, dust and other debris from remaining in the dustproof bin 6 for a long time, further ensuring the accuracy of detection.

[0074] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A label printing defect rapid detection device, characterized in that: It includes a mounting base (1), a label (2) and a detection head (3); A detection seat (4) corresponding to the label (2) is installed on the side wall of the mounting seat (1), a dustproof bin (6) is installed on the mounting seat (1), the detection head (3) and the detection seat (4) are both located in the dustproof bin (6), and an installation groove (8) for installing the label (2) is opened on the outer wall of the dustproof bin (6); A first air duct (5) corresponding to the detection head (3) is installed in the dustproof bin (6), and a nozzle (51) with an opening facing the detection head (3) is installed at the end of the first air duct (5), and an air supply cover (7) corresponding to the first air duct (5) is installed on the outer wall of the dustproof bin (6); The outer wall of the mounting seat (1) is mounted with a second air duct (9) for cleaning the label (2), and a breathable roller (10) for guiding the label (2) is rotatably mounted on the outer wall of the second air duct (9), an air supply slot (91) is opened on the outer wall of the second air duct (9), and an air guide plate (92) corresponding to the opening position of the air supply slot (91) is mounted on the outer wall of the second air duct (9); The outer wall of the mounting seat (1) is provided with a first dust removal pipe (12) and a second dust removal pipe (121) for cleaning the label (2), and the outer wall on the other side of the mounting seat (1) is provided with an exhaust hood (11) connected to the first dust removal pipe (12) and the second dust removal pipe (121); A protective wheel (13) abutting the label (2) is mounted on the top inner wall of the mounting groove (8), and a movable seat (14) is rotatably mounted on the bottom inner wall of the mounting groove (8), and a sealing wheel (15) abutting the label (2) is rotatably mounted on the top of the movable seat (14), and when the label (2) is not located in the dustproof bin (6), the outer wall of the sealing wheel (15) abuts the outer wall of the protective wheel (13); Exhaust slots (17) connected to the top of the mounting slot (8) are provided in the outer walls on both sides of the dustproof bin (6), and third air ducts (18) connected to the air supply hood (7) are installed on the outer walls on both sides of the dustproof bin (6). A movable slot (16) for the movable seat (14) and the sealing wheel (15) to move is provided in the dustproof bin (6), and an elastic member for pushing the movable seat (14) is provided in the movable slot (16).

2. The label printing defect rapid detection device according to claim 1, characterized in that: A door (61) is rotatably mounted on the outer wall of the dustproof bin (6), a sealing structure is provided at a position where the door (61) and the outer wall of the dustproof bin (6) are in contact, and an observation window is provided on the outer wall of the door (61).

3. The label printing defect rapid detection device according to claim 2, characterized in that: The mounting grooves (8) are symmetrically mounted in two groups on the outer walls of both sides of the dustproof bin (6), and the side openings of the mounting grooves (8) penetrate the outer wall of the dustproof bin (6) and the bin door (61), and the inner walls of the mounting grooves (8) are designed to be inclined toward the outer bottom of the dustproof bin (6).

4. The label printing defect rapid detection device according to claim 1, characterized in that: The inner diameter of the air-permeable roller (10) is smaller than the outer diameter of the second air duct (9), and the distance between the inner wall of the air-permeable roller (10) and the outer wall of the air guide plate (92) is 1 mm. The opening width of one side of the air guide plate (92) is smaller than the opening width of the air supply slot (91).

5. The label printing defect rapid detection device according to claim 1, characterized in that: A support roller (93) located below the label (2) is rotatably mounted on the outer wall of the mounting seat (1), and the support roller (93) is located outside the second air duct (9).

6. The label printing defect rapid detection device according to claim 1, characterized in that: The air supply hood (7) is connected to an external blower, and the diameter of the external interface position of the air supply hood (7) is larger than the sum of the diameter of the first air duct (5), the diameter of the second air duct (9) and the width of the two groups of the third air duct (18).

7. The label printing defect rapid detection device according to claim 1, characterized in that: The first dust removal pipe (12) and the second dust removal pipe (121) are respectively arranged above and below the label (2), and the outer walls of the first dust removal pipe (12) and the second dust removal pipe (121) are both provided with an exhaust port (122) for collecting dust.

8. The label printing defect rapid detection device according to claim 1, characterized in that: The exhaust hood (11) is connected to an external exhaust fan, the diameter of the exhaust hood (11) is larger than the combined width of the first dust removal pipe (12) and the second dust removal pipe (121), and a section of the second dust removal pipe (121) is located below the label (2), and a section of the exhaust port (122) is located outside the label (2), and the positions of the exhaust ports (122) of the first dust removal pipe (12) and the second dust removal pipe (121) are located in the same plane.

9. The label printing defect rapid detection device according to claim 1, characterized in that: The width of the bottom opening of the exhaust slot (17) is smaller than the width of the interior of the exhaust slot (17), and the inner wall of the exhaust slot (17) close to the bottom opening is designed to be inclined toward the outside of the dustproof bin (6), and the bottom opening of the exhaust slot (17) is located outside the protective wheel (13).

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