Coating film quality inspection equipment

Abstract

The utility model relates to the technical field of appearance defect inspection equipment, and discloses coating quality inspection equipment which comprises a material conveying module and an inspection module, the material conveying module is arranged below the inspection module and is suitable for driving the to-be-inspected material to move below the inspection module; the inspection module comprises a spraying module which is suitable for spraying to the surface of the to-be-inspected material; the wiping module is arranged at the downstream of the spraying module, and the wiping module is suitable for wiping the surface of the to-be-detected material; and the visual detection module is arranged at the downstream of the wiping module, and the visual detection module is suitable for acquiring image information of the surface of the to-be-detected material. According to the inspection equipment disclosed by the utility model, by spraying and wiping the surface of the material to be inspected and acquiring the surface image information, the coating quality of the surface of the material to be inspected can be accurately judged, the detection precision of coating defects on the surface of glass is improved, and the conditions of misjudgment, missed judgment, over-killing and the like are reduced; therefore, the technology meets the actual requirements in industrial production.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection equipment for appearance defects, in particular to inspection equipment for coating quality. Background Art

[0002] For the sake of aesthetics and dirt resistance, the cover plates of electronic devices such as mobile phones, watches, tablets, and computers are usually coated on the surface by vacuum coating, evaporation, sputtering, or spraying. However, it is difficult to guarantee 100% good quality by coating process, and uneven coating is prone to occur, which seriously affects user experience and brand value.

[0003] In the related technology, liquid, usually alcohol or water vapor, is sprayed on the coating surface of the material to be inspected manually, and defects are detected by naked eyes. However, manual inspection has problems such as low inspection efficiency, poor inspection effect, high over-kill and missed inspection rates, which is difficult to meet the needs of commercial production. Utility Model Content

[0004] The purpose of this application is to provide a coating quality inspection device to solve the problems of low inspection efficiency, poor inspection effect, high over-kill and missed inspection rates, and inability to meet the actual needs of commercial production caused by manual inspection and traditional inspection equipment and methods.

[0005] The utility model provides a coating quality inspection device, comprising a material transport module and an inspection module, wherein the material transport module is arranged below the inspection module, and is suitable for driving the material to be inspected to move below the inspection module; the inspection module comprises: a spray module, suitable for spraying to the surface of the material to be inspected; a wiping module, arranged downstream of the spray module, and suitable for wiping the surface of the material to be inspected; and a visual inspection module, arranged downstream of the wiping module, and suitable for acquiring image information of the surface of the material to be inspected.

[0006] In an optional embodiment, the spray module includes a spray hood and a spray valve. The spray hood is connected to the top of the material transport module, and the nozzle of the spray valve is located in the spray hood.

[0007] In an optional implementation, the wiping module includes a wiping head and a cleaning belt, and the cleaning belt is wound around the wiping head.

[0008] In an optional embodiment, the inspection device also includes a position adjustment module, the visual inspection module includes a camera, the camera is installed on the position adjustment module, and the position adjustment module is suitable for driving the camera to move in upstream and downstream directions and perpendicular to the upstream and downstream directions.

[0009] In an optional embodiment, the material transport module includes a first clamp and a conveying track, the first clamp is arranged on the conveying track, and the conveying track is suitable for driving the first clamp to reciprocate in the upstream and downstream directions.

[0010] In an optional embodiment, the inspection device further includes a first flip module. The inspection modules are provided in two groups. The two groups of inspection modules are arranged at intervals in an upstream and downstream direction. The first flip module is arranged between the two groups of inspection modules.

[0011] In an optional embodiment, the first flip module includes a second clamp and a robot arm, the second clamp is flipably mounted on the robot arm, and the robot arm is suitable for docking the second clamp with the material transport module.

[0012] In an optional embodiment, the inspection device further includes a measurement and control module, which is suitable for processing image information of the surface of the material to be inspected to obtain coating quality information of the material to be inspected.

[0013] In an optional embodiment, the inspection device further includes a material unloading module, and the material unloading module is arranged downstream of the material transport module and the inspection module.

[0014] In an optional embodiment, the inspection device further includes a scanning module, which is disposed above the material transport module and upstream of the inspection module.

[0015] In the technical solution of the utility model, the coating qualified area and coating defect area of ​​the material to be inspected show different characteristics of liquid adhesion. Specifically, after the material to be inspected is sprayed, the residual traces on the surface of the coating qualified area and the coating defect area are different; after wiping the surface of the material to be inspected, the volatilization shape and dissipation trend of the mist liquid in the coating qualified area and the coating defect area are different. Therefore, in the image information of the surface of the material to be inspected obtained by the visual inspection module, the coating qualified area and the coating defect area show different texture rules, which is convenient for quickly identifying the position and size of the coating defect area and accurately judging the coating quality of the material to be inspected.

[0016] Therefore, by utilizing the technical solution of the utility model, the material transport module and the inspection module can realize streamlined operation and improve operating efficiency; and the inspection module can accurately determine whether the coating quality of the material to be inspected is qualified, thereby improving the detection effect and reducing the over-kill and missed detection rates, so as to meet the actual needs of commercial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a coating quality inspection device according to an embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a coating quality inspection device according to an embodiment of the utility model;

[0020] Figure 3 for Figure 2 A top view of

[0021] Figure 4 It is a partial enlarged view of a material transport module and an inspection module of an embodiment of the utility model;

[0022] Figure 5 This is a picture showing the effect of using the inspection device of the embodiment of the utility model when the coating of the material to be inspected is uneven;

[0023] Figure 6 When the coating on the edge of the material to be inspected overflows, the photographic effect is obtained only after the material to be inspected is sprayed;

[0024] Figure 7 This is a photographic effect obtained by using the inspection device of an embodiment of the utility model when the coating on the edge of the material to be inspected overflows.

[0025] Description of reference numerals:

[0026] 1. Casing;

[0027] 2. Material transport module; 21. First fixture; 22. Conveying track;

[0028] 3. Inspection module; 31. Spray module; 311. Spray hood; 32. Wiping module; 321. Wiping head; 33. Visual inspection module; 331. Camera;

[0029] 4. Position adjustment module;

[0030] 5. The first flip module;

[0031] 6. Measurement and control module;

[0032] 7. Unloading module; 71. Handling module; 72. Unloading module;

[0033] 8. The second flip module;

[0034] 9. Materials to be inspected. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0042] According to an embodiment of the utility model, a coating quality inspection device is provided, which is used to inspect the coating quality of the surface of the material to be inspected 9 after coating, so as to determine the coating quality of the material to be inspected 9. It can be understood that the material to be inspected 9 can be a glass panel of electronic devices such as mobile phones, watches, tablets, computers, etc. This application does not specifically limit the material, structure and use of the material to be inspected 9, as long as there is a need for coating quality inspection.

[0043] Specifically, Figure 1-3 As shown, the inspection device includes a material transport module 2 and an inspection module 3. The material transport module 2 is arranged below the inspection module 3. The material transport module 2 is suitable for driving the material 9 to be inspected to move below the inspection module 3 so that the inspection module 3 can inspect the surface of the material 9 to be inspected.

[0044] The inspection module 3 specifically includes a spray module 31, a wiping module 32 and a visual inspection module 33. The spray module 31 is suitable for spraying on the surface of the material 9 to be inspected, and the atomized substance sprayed by the spray module 31 can be water mist or alcohol mist. The wiping module 32 is arranged downstream of the spray module 31, and the wiping module 32 is suitable for wiping the surface of the material 9 to be inspected. The visual inspection module 33 is arranged downstream of the wiping module 32, and the visual inspection module 33 is suitable for obtaining image information of the surface of the material 9 to be inspected.

[0045] It should be noted that the upstream and downstream mentioned in the present invention refer to the upstream and downstream in the flow direction of the material 9 to be inspected. Figure 2 and 3 In the figure, the direction indicated by the arrow is the flow direction of the material 9 to be inspected.

[0046] The inspection process of the inspection equipment of the present invention is as follows: the material 9 to be inspected is loaded onto the material transport module 2, and the material transport module 2 drives the material 9 to be inspected to flow under the inspection module 3, and passes through the spray module 31, the wiping module 32 and the visual inspection module 33 of the inspection module 3 in sequence; during this circulation process, the spray module 31 first sprays the surface of the material 9 to be inspected, and the wiping module 32 then wipes the sprayed surface of the material 9 to be inspected, and then the visual inspection module 33 obtains the surface image information of the material 9 to be inspected after spraying and wiping.

[0047] According to the technical solution of the utility model, the coating qualified area and the coating defect area of ​​the material to be inspected 9 show different characteristics for the adhesion characteristics of the liquid. Specifically, after the material to be inspected is sprayed, the residual traces shown by the coating qualified area and the coating defect area are different; after wiping the surface of the material to be inspected 9, the volatilization shape and dissipation trend of the mist liquid in the coating qualified area and the coating defect area are different. Therefore, in the image information of the surface of the material to be inspected 9 obtained by the visual inspection module 33, the coating qualified area and the coating defect area show different texture rules, which is convenient for quickly identifying the position and size of the coating defect area and accurately judging the coating quality of the material to be inspected. Therefore, by using the technical solution of the utility model, the material transport module 2 and the inspection module 3 can realize streamlined operation and improve the operation efficiency; and the inspection module 3 can accurately judge whether the coating quality of the material to be inspected 9 is qualified, which improves the detection effect and reduces the over-killing and missed detection rate, so as to meet the actual needs of commercial production.

[0048] Furthermore, in some embodiments, Figure 4 As shown, the material transport module 2 includes a first clamp 21 and a conveying track 22. The first clamp 21 is arranged on the conveying track 22. The conveying track 22 is suitable for driving the first clamp 21 to move back and forth in the upstream and downstream directions. It should be noted that the upstream and downstream directions mentioned in the present invention refer to the flow direction of the material 9 to be inspected. Figure 2 and Figure 3 The direction indicated by the arrow.

[0049] Specifically, the inspection device also includes a negative pressure module, and the first clamp 21 is provided with a plurality of adsorption holes, and the negative pressure module is connected to the adsorption holes on the first clamp 21, and the negative pressure module is suitable for vacuuming the first clamp 21 through the adsorption holes to vacuum adsorb the material 9 to be inspected on the first clamp 21. The conveying track 22 can be a conveyor belt track or a linear motor transmission track, etc. For example, the conveying track 22 is a conveyor belt track, which includes a conveyor belt, a conveyor wheel and a conveyor motor. The conveyor belt is wound around the conveyor wheel, and the conveyor motor can drive the conveyor belt to rotate forward or reverse through the conveyor wheel. The first clamp 21 is placed on the conveyor belt, and when the conveyor belt rotates forward or reversely, the conveyor belt can drive the first clamp 21 to move back and forth in the upstream and downstream directions.

[0050] Among them, a plurality of first clamps 21 can be provided, and the plurality of first clamps 21 can independently reciprocate in the upstream and downstream directions to alternately transport the material 9 to be inspected, reduce the waiting time of the material 9 to be inspected, and further improve the inspection efficiency. Exemplarily, two first clamps 21 are provided, and correspondingly, two groups of conveying tracks 22 are provided, and the two groups of conveying tracks 22 are sequentially arranged in the upstream and downstream directions, and the two first clamps 21 are respectively arranged on the two conveying tracks 22. Exemplarily, the two groups of conveying tracks 22 can both be conveyor belt tracks, or can both be linear motor drive tracks, or can be one group of conveyor belt tracks and one group of linear motor drive tracks, etc.

[0051] It can be understood that the present invention does not impose any specific limitation on the structure and number of the first clamp 21 and the conveying track 22 , as long as they can realize the function of transporting the material 9 to be inspected.

[0052] Furthermore, in some embodiments, Figure 4 As shown, the spray module 31 includes a spray hood 311 and a spray valve. The spray hood 311 is connected to the top of the material transport module 2, and the nozzle of the spray valve is located in the spray hood 311. The spray area of ​​the spray valve covers the cross-sectional area of ​​the material to be inspected 9, so as to quickly complete the spraying of the material to be inspected 9 and ensure the inspection efficiency. The spray hood 311 is a hood body with an open bottom, and the spray hood 311 is connected to the above-mentioned conveying track 22. The spray valve is connected to the top of the spray hood 311, and the nozzle of the spray valve faces the conveying track 22. The first clamp 21 can carry the material to be inspected 9 into the spray hood 311, so that the nozzle of the spray valve is directly opposite to the material to be inspected 9.

[0053] Specifically, the inspection device further includes a liquid storage tank, which is connected to the spray valve and is used to supply liquid to the spray valve, and the spray valve atomizes the liquid and sprays it toward the material to be inspected 9. The liquid in the liquid storage tank can be water or alcohol.

[0054] Furthermore, in some embodiments, Figure 4As shown, the wiping module 32 includes a wiping head 321 and a cleaning belt, and the cleaning belt is wound on the wiping head 321. The wiping head 321 is correspondingly arranged above the conveying track 22, and can be directly opposite to the first clamp 21. When the first clamp 21 transports the material 9 to be inspected to the bottom of the wiping head 321, the cleaning belt wound on the wiping head 321 contacts the surface of the material 9 to be inspected, and in the process of the first clamp 21 driving the material 9 to be inspected to move downstream, the wiping of the material 9 to be inspected is completed. Exemplarily, the cleaning belt can be a non-woven fabric, a dust-free cloth, etc. Exemplarily, the cleaning belt is soaked with alcohol, and after the material 9 to be inspected is wiped with the cleaning belt soaked with alcohol, the display effect of the coating defect area is better.

[0055] Further, in some embodiments, the wiping module 32 includes a mounting plate and a motor module, and the wiping head 321 and the cleaning belt are fixedly connected to the motor module through the mounting plate. The motor module is suitable for driving the wiping head 321 and the cleaning belt to move linearly through the mounting plate. Exemplarily, the mounting plate is a sheet metal part. In this embodiment, the wiping head 321 and the cleaning belt are firmly fixed above the motor module that can move in a straight line through the mounting plate, and the two are in a relatively static state, and the overall structure is stable, so as to avoid the cleaning belt from being misplaced and shaking, resulting in missing or scratching the material 9 to be inspected.

[0056] Specifically, in some embodiments, the wiping module 32 further includes a mounting plate, a feeding shaft, a receiving shaft, and a feeding motor, and the wiping head 321, the feeding shaft, the receiving shaft, and the feeding motor are all mounted on the mounting plate. The cleaning tape is tensioned and wound between the feeding shaft, the wiping head 321, and the receiving shaft, and the feeding motor is suitable for driving the feeding shaft to rotate so as to discharge the cleaning tape; and the feeding motor is suitable for driving the receiving shaft to rotate so as to retract the cleaning tape.

[0057] Further, in some embodiments, the visual inspection module 33 includes a camera 331 and a light source, and the camera 331 is located above the conveying track 22 to take a picture of the surface of the material to be inspected 9 on the first fixture 21 to obtain image information of the surface of the material to be inspected 9. One or more light sources can be provided and located on both sides of the conveying track 22 to provide sufficient light for the camera 331.

[0058] Furthermore, in some embodiments, Figure 2 and 3 As shown, the inspection device also includes a position adjustment module 4, and the camera 331 is installed on the position adjustment module 4 through a mounting structure (not shown in the figure), and the position adjustment module 4 is suitable for driving the camera 331 to move in the upstream and downstream directions and perpendicular to the upstream and downstream directions. It should be noted that in this embodiment, the direction perpendicular to the upstream and downstream refers to the height direction of the inspection device.

[0059] Specifically, the position adjustment module 4 includes an X-track and a Z-track that are slidably connected, the X-track extends in the upstream and downstream direction, the Z-track extends in the direction perpendicular to the upstream and downstream (height direction), and the above-mentioned mounting structure is slidably connected to the Z-track. The X-track adjusts the position of the camera 331 in the upstream and downstream direction through the mounting structure, and the Z-track adjusts the position of the camera 331 in the direction perpendicular to the upstream and downstream through the mounting structure.

[0060] Furthermore, in some embodiments, Figure 1 and 2 As shown, there are two groups of inspection modules 3 and material transport modules 2, and the two groups of inspection modules 3 and the two groups of material transport modules 2 are respectively arranged correspondingly, and the two groups of inspection modules 3 and the two groups of material transport modules 2 are arranged at intervals along the upstream and downstream directions. The two groups of inspection modules 3 and material transport modules 2 are respectively used to inspect the front and back sides of the material 9 to be inspected, further improving the inspection efficiency.

[0061] Specifically, the inspection device further includes a first flip module 5, which is disposed between the two inspection modules 3 and between the two material transport modules 2. The first flip module 5 can dock with the two material transport modules 2 to flip the material 9 to be inspected on the upstream material transport module 2 by 180° and place it on the downstream material transport module 2 to continue the inspection of the other side of the material 9 to be inspected, thereby realizing fully automated inspection without manual operation, which not only improves the inspection efficiency but also avoids manual damage to the surface of the material 9 to be inspected.

[0062] Furthermore, the inspection device further includes a measurement and control module 6, and each module in the device operates under the control of the measurement and control module 6. It can be understood that the measurement and control module 6 can be an industrial computer.

[0063] Specifically, in some embodiments, the first flip module 5 includes a second fixture and a mechanical arm, the second fixture can be flipped and installed on the mechanical arm, and the mechanical arm is suitable for docking the second fixture with the material transport module 2. Exemplarily, the second fixture can be a vacuum suction cup, which is connected to the negative pressure module, and the second fixture can vacuum adsorb the material to be inspected 9 under the action of the negative pressure module to fix the material to be inspected 9 on the second fixture. Exemplarily, the mechanical arm is suitable for driving the second fixture to move in the upstream and downstream directions and in the direction perpendicular to the upstream and downstream directions (height direction).

[0064] In this embodiment, the flipping process of the first flipping module 5 is as follows: the second clamp is locked in the initial position by the above-mentioned mechanical arm; the first flipping module 5 controls the mechanical arm through the measurement and control module 6, so that the mechanical arm drives the vacuum suction cup to move to the top of the material to be inspected 9 that has completed the front detection; the vacuum suction cup turns on the vacuum adsorption to fix the material to be inspected 9, so that the material to be inspected 9 maintains its original posture; after the mechanical arm drives the material to be inspected on the vacuum suction cup upward or downward away from the original product carrier (that is, the first clamp 21), the vacuum suction cup is flipped 180° in the air to realize the front and back side reversal of the material to be inspected 9; the measurement and control module 6 controls the mechanical arm to move to the first clamp 21 of the downstream material transport module 2, and then enters the back side detection process of the material to be inspected 9.

[0065] Furthermore, in some embodiments, Figure 1 and 2 As shown, the two groups of material transport modules 2, the two groups of inspection modules 3 and the first flip module 5 together form an inspection line. The inspection line can be arranged in parallel with multiple lines to further improve the inspection efficiency and realize continuous inspection operation. Exemplarily, the inspection line can be arranged in parallel with two lines.

[0066] Furthermore, in some embodiments, Figure 1 As shown, the measurement and control module 6 is suitable for processing the image information of the surface of the material to be inspected 9, specifically including the image information of the front and back of the material to be inspected 9, so as to obtain the coating quality information of the material to be inspected 9. According to the coating quality information of the measurement and control module 6, it is possible to directly determine whether the material to be inspected is a qualified product or a defective product without manual judgment, thereby further improving the accuracy of the detection.

[0067] Specifically, the measurement and control module 6 is suitable for obtaining the coating defect area on the surface of the material to be inspected 9 through the image information of the surface of the material to be inspected 9, and extracting the area size of the defect area through algorithm processing, and comparing the area size of the defect area with the range of the area size of the defect area of ​​qualified products, thereby determining whether the material to be inspected 9 is a qualified product or a defective product.

[0068] Furthermore, the inspection device further comprises a material unloading module 7, which is arranged downstream of the material transport module 2 and the inspection module 3, and is used to unload the material 9 to be inspected so as to flow into the next process. Figure 2 As shown, the material unloading module 7 includes a handling module 71 and a material unloading module 72 . The handling module 71 is arranged between the material transport module 2 and the material unloading module 72 , and the material unloading module 72 is arranged across the material transport module 2 .

[0069] Exemplarily, the handling module 71 may be a linear module, adapted to transfer the material 9 to be inspected on the transport module 2 to the unloading module 72. The unloading module 72 may be a conveyor belt, specifically two conveyor belts, the two conveyor belts being used to unload qualified products and defective products respectively.

[0070] Exemplarily, a second flip module 8 may be further provided between the material transport module 2 and the material unloading module 7 . The structure of the second flip module 8 is the same as that of the first flip module 5 , and will not be described in detail herein.

[0071] Furthermore, the inspection device also includes a scanning module, which is arranged above the material transport module 2 and upstream of the inspection module 3. Before the material 9 to be inspected is inspected, the scanning module scans the material 9 to be inspected, obtains the inspection code of the material 9 to be inspected, and transmits the inspection code to the measurement and control module 6. The orderly inspection of the material 9 to be inspected is realized through the measurement and control module 6, and the fully automated assembly line operation is realized to meet the commercial production needs. Exemplarily, the scanning module can be a barcode scanning gun, which is electrically connected to the measurement and control module 6, and the barcode scanning gun can be installed on the above-mentioned position adjustment module 4 to realize automatic scanning without manual operation.

[0072] Furthermore, if Figure 1 As shown, the inspection device also includes a casing 1, and the above-mentioned material transport module 2, inspection module 3, position adjustment module 4, first flip module 5, unloading module 7, second flip module 8, etc. are all arranged in the casing 1. The casing 1 can reduce radiation, light noise and sound noise.

[0073] The specific inspection process of the inspection equipment of the utility model is:

[0074] Loading: The material to be inspected 9 is loaded onto the material transport module 2;

[0075] Scanning: The material transport module 2 drives the material to be inspected 9 to move to the scanning position, and the scanning module scans the detection code (usually a two-dimensional barcode) on the material to be inspected 9;

[0076] Front spraying: the material transport module 2 drives the material to be inspected 9 to move to the spraying station, and the spraying module 31 sprays the front of the material to be inspected 9 (which can be alcohol or water);

[0077] Front wiping: The material transport module 2 drives the material to be inspected 9 to move to the wiping station, and the wiping module 32 wipes the front of the material to be inspected 9;

[0078] Obtaining front image information: the material transport module 2 drives the material to be inspected 9 to move to the camera station, and the visual inspection module 33 obtains the front image information of the material to be inspected 9;

[0079] Turning: The first turning structure turns the material 9 to be inspected 180° and puts it into the downstream material transport module 2;

[0080] Back side spraying: the material transport module 2 drives the material to be inspected 9 to move to the spraying station, and the spraying module 31 sprays the back side of the material to be inspected 9 (which can be alcohol or water);

[0081] Wiping the back side: the material transport module 2 drives the material to be inspected 9 to move to the wiping station, and the wiping module 32 wipes the back side of the material to be inspected 9;

[0082] Obtaining the image information of the back side: the material transport module 2 drives the material to be inspected 9 to move to the camera station, and the visual inspection module 33 obtains the image information of the back side of the material to be inspected 9;

[0083] Unloading: The unloading module 7 transports the material 9 to be inspected to the next process.

[0084] The inspection device of the utility model utilizes the different performance of liquid adhesion characteristics of the coating qualified area and the coating defect area. After spraying (preferably alcohol spraying) and wiping (preferably wiping with non-woven fabric soaked in alcohol) the coating surface of the material 9 to be inspected, the image information of the surface of the material 9 to be inspected obtained by the visual inspection module 33 can clearly show the different texture rules of the coating qualified area and the coating defect area. Figure 5-Figure 7 ,in Figure 5 The figure shows the effect of using the inspection device of the present invention when the coating of the material 9 to be inspected is uneven. Figure 5 It can be clearly seen that after spraying and wiping, the trace shape and contour size of the unevenly coated part of the material to be inspected 9 are abnormally obvious, which makes it easy for the measurement and control module 6 to process the defective area by algorithm. Figure 6 The photographic effect diagram is shown when the coating on the edge of the inspected material 9 overflows and the inspected material 9 is only sprayed; Figure 7 The following figure shows the effect of using the inspection device of the present invention when the coating on the edge of the material 9 to be inspected overflows. Figure 6 and Figure 7 It can be clearly seen that Figure 6 Water drops gather at the lower edge of the material to be inspected 9, making it difficult to accurately obtain the defect area based on the image information. Figure 7 After spraying and wiping, the outline of the defective area at the lower edge of the material to be inspected 9 is obvious, which makes it easy for the measuring mechanism to process the defective area by algorithm.

[0085] The inspection time of the workpieces in this application is as follows: 3s / piece for a single conveyor track, and 1.5s / piece for a double conveyor track. UPH (Units Per Hour) is 2400, and the system missed detection is <0.09%. This application has the advantages of high inspection efficiency and high inspection accuracy.

[0086] In summary, the use of the inspection equipment of the utility model can greatly improve the accuracy of detecting coating defects, reduce the over-kill and missed detection rates, and realize the full-process inspection of fully automated loading and unloading + spraying and wiping + testing of glass surface coating, greatly improving the efficiency of appearance inspection.

[0087] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A coating quality inspection device, characterized in that: It comprises a material transport module (2) and an inspection module (3), wherein the material transport module (2) is arranged below the inspection module (3), and the material transport module (2) is suitable for driving the material to be inspected (9) to move below the inspection module (3); The inspection module (3) comprises: A spray module (31), adapted to spray onto the surface of the material to be inspected (9); A wiping module (32) is arranged downstream of the spray module (31), and the wiping module (32) is suitable for wiping the surface of the material to be inspected (9); A visual inspection module (33) is arranged downstream of the wiping module (32), and the visual inspection module (33) is suitable for acquiring image information of the surface of the material to be inspected (9).

2. The coating quality inspection device according to claim 1, characterized in that: The spray module (31) comprises a spray hood (311) and a spray valve. The spray hood (311) is connected to the top of the material transport module (2), and the spray port of the spray valve is located in the spray hood (311).

3. The coating quality inspection device according to claim 1, characterized in that: The wiping module (32) comprises a wiping head (321) and a cleaning belt, wherein the cleaning belt is wound around the wiping head (321).

4. The coating quality inspection device according to claim 1, characterized in that: The inspection device also includes a position adjustment module (4), the visual inspection module (33) includes a camera (331), and the camera (331) is installed on the position adjustment module (4). The position adjustment module (4) is suitable for driving the camera (331) to move in the upstream and downstream directions and in the directions perpendicular to the upstream and downstream directions.

5. The coating quality inspection device according to claim 1, characterized in that: The material transport module (2) comprises a first clamp (21) and a conveying track (22), wherein the first clamp (21) is arranged on the conveying track (22), and the conveying track (22) is suitable for driving the first clamp (21) to move back and forth in upstream and downstream directions.

6. The coating quality inspection device according to any one of claims 1 to 5, characterized in that: The inspection device further comprises a first flip module (5), the inspection modules (3) are provided in two groups, the two groups of inspection modules (3) are arranged at intervals in the upstream and downstream directions, and the first flip module (5) is arranged between the two groups of inspection modules (3).

7. The coating quality inspection device according to claim 6, characterized in that: The first flip module (5) comprises a second clamp and a mechanical arm, the second clamp is flipably mounted on the mechanical arm, and the mechanical arm is suitable for docking the second clamp with the material transport module (2).

8. The coating quality inspection device according to claim 6, characterized in that: The inspection device further comprises a measurement and control module (6), wherein the measurement and control module (6) is suitable for processing image information of the surface of the material to be inspected (9) to obtain coating quality information of the material to be inspected (9).

9. The coating quality inspection device according to claim 1, characterized in that: The inspection device further comprises a material unloading module (7), wherein the material unloading module (7) is arranged downstream of the material transport module (2) and the inspection module (3).

10. The coating quality inspection device according to claim 1, characterized in that: The inspection device further comprises a scanning module, which is arranged above the material transport module (2) and upstream of the inspection module (3).

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