Online surface detection system for flaws of zinc-aluminum-magnesium board

Abstract

The utility model discloses a zinc-aluminum-magnesium board defect on-line surface detection system, which comprises an imaging device located on a conveying path of a to-be-detected board, and the to-be-detected board is provided with a first side surface and a second side surface; the imaging device comprises a pinhole light source which is arranged corresponding to a first side surface of a to-be-detected plate; the pinhole camera mechanism is arranged corresponding to the second side face of the to-be-detected plate, and the pinhole camera mechanism and the pinhole light source are located on the same light path; the surface detection light source is arranged corresponding to the first side surface and / or the second side surface of the to-be-detected plate; and the surface detection camera mechanism is arranged corresponding to the first side surface and / or the second side surface of the to-be-detected plate, and the surface detection camera mechanism and the surface detection light source are arranged on the same side. The imaging device is innovatively arranged on the conveying path of the to-be-detected plate, the pinhole light source, the pinhole camera mechanism, the surface detection light source and the surface detection camera mechanism are used for detecting the defects on the to-be-detected plate, the defects of the zinc-aluminum-magnesium plate surface are recognized, and therefore the outgoing quality of products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of zinc aluminum magnesium board surface detection, and specifically relates to a kind of zinc aluminum magnesium board surface flaw online surface detection system. BACKGROUND

[0002] In zinc aluminum magnesium, aluminize or aluminize zinc production line, plate strip quality control is the key step in production process, and plate surface defect is an important factor affecting its quality, so plate surface quality defect detection is very important for controlling and improving plate strip quality.

[0003] At present, in continuous production process, plate surface defect is observed by artificial naked eye and sampled detection;However, steel strip speed is fast, personnel cannot reliably capture defect information (such as pinhole or leakage, zinc residue point, edge crack, scratch and the like defect), and these defects not only affect the appearance of product, more seriously, reduce the corrosion resistance, wear resistance and fatigue strength and the like performance of product. When leaving factory, it cannot be effectively detected, and it is found in user use process, causes user claim, not only brings huge economic loss to company, but also seriously affects the market image of product, reduces the trust of user to product. UTILITY MODEL CONTENT

[0004] In order to overcome the above technical defects, the utility model aims at providing a kind of zinc aluminum magnesium board surface flaw online surface detection system, to solve how to identify zinc aluminum magnesium board surface flaw in background art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model discloses a kind of zinc aluminum magnesium board surface flaw online surface detection system, comprising:

[0007] Imaging device is located on the conveying path of the plate to be detected, and the plate to be detected has first side and second side;The imaging device includes:

[0008] Pinhole light source is arranged corresponding to the first side of the plate to be detected;

[0009] Pinhole camera mechanism is arranged corresponding to the second side of the plate to be detected, and the pinhole camera mechanism and the pinhole light source are in the same optical path;

[0010] Surface inspection light source is arranged corresponding to the first side and / or second side of the plate to be detected;

[0011] Surface inspection camera mechanism is arranged corresponding to the first side and / or second side of the plate to be detected, and the surface inspection camera mechanism is arranged on the same side of the surface inspection light source.

[0012] Compared with the prior art, the imaging device is arranged on the conveying path of the to-be-detected plate, the pinhole on the to-be-detected plate is detected by using the pinhole light source and the pinhole camera mechanism, the zinc residue point, the edge crack, the scratch and other defects on the to-be-detected plate are detected by using the surface detection light source and the surface detection camera mechanism, and the zinc-aluminum-magnesium plate surface flaw is recognized, so that the product quality is improved.

[0013] In an embodiment, the imaging device further comprises a first mounting bracket and a second mounting bracket, the first mounting bracket and the second mounting bracket are arranged separately, wherein,

[0014] the pinhole light source, the surface detection light source and the pinhole camera mechanism are arranged on the first mounting bracket;

[0015] the surface detection camera mechanism is arranged on the second mounting bracket.

[0016] In an embodiment, the first mounting bracket and the second mounting bracket are both provided with a mounting end.

[0017] In an embodiment, the distance between the first mounting bracket and the second mounting bracket is 300-400 mm.

[0018] In an embodiment, the imaging device further comprises a plurality of light source protection tubes and a plurality of camera protection shells, wherein,

[0019] the plurality of light source protection tubes are respectively sleeved on the periphery of the pinhole light source and the surface detection light source, and the light source protection tube is provided with a light transmission area;

[0020] the plurality of camera protection shells are respectively sleeved on the periphery of the pinhole camera mechanism and the surface detection camera mechanism, and the camera protection shell is provided with a shooting area.

[0021] In an embodiment, the surface detection light source comprises a first surface detection light source and a second surface detection light source, the first surface detection light source is arranged corresponding to the first side of the to-be-detected plate, and the second surface detection light source is arranged corresponding to the second side of the to-be-detected plate.

[0022] The surface detection camera mechanism comprises a first surface detection camera mechanism and a second surface detection camera mechanism, the first surface detection camera mechanism is arranged corresponding to the first side of the to-be-detected plate, and the second surface detection camera mechanism is arranged corresponding to the second side of the to-be-detected plate.

[0023] In an embodiment, the zinc-aluminum-magnesium plate surface defect on-line surface detection system further comprises a control device electrically connected with the pinhole camera mechanism and the surface detection camera mechanism, for acquiring image information emitted by the pinhole camera mechanism and the surface detection camera mechanism.

[0024] In an embodiment, the zinc-aluminum-magnesium plate surface defect on-line surface detection system further comprises an encoder arranged on an end surface of a transmission roller on a conveying path of the plate to be detected; the encoder is also electrically connected with the control device. BRIEF DESCRIPTION OF DRAWINGS

[0025] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0026] Figure 1 It is a side view of the zinc-aluminum-magnesium plate surface defect on-line surface detection system of the present application; (installed on the ground)

[0027] Figure 2 It is a front view of the zinc-aluminum-magnesium plate surface defect on-line surface detection system of the present application; (installed on the ground)

[0028] Figure 3 It is a top view of the zinc-aluminum-magnesium plate surface defect on-line surface detection system of the present application; (installed on the ground)

[0029] Figure 4 It is a side view of the zinc-aluminum-magnesium plate surface defect on-line surface detection system of the present application; (installed on the beam)

[0030] Figure 5 It is a schematic view of the transmission roller and the encoder.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 10 plate to be detected, 110 first side surface, 120 second side surface, 210 pinhole light source, 220 pinhole camera mechanism, 231 first surface detection light source, 232 second surface detection light source, 241 first surface detection camera mechanism, 242 second surface detection camera mechanism, 251 first mounting bracket, 252 second mounting bracket, 253 mounting end, 261 light source protection tube, 262 camera protection shell, 310 transmission roller, 320 encoder. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0034] In order to better illustrate the present application, the present application will be further described in detail below with reference to the accompanying drawings.

[0035] It should be noted that the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] The terms used in the present application are merely for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to any or all possible combinations of one or more associated listed items.

[0037] In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of "and / or" describing the associated objects means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0038] The utility model discloses a kind of zinc-aluminum-magnesium plate surface flaw online surface detection systems, comprising: imaging device, it is located on the transmission path of the plate to be detected 10, the plate to be detected 10 has first side 110 and second side 120;The imaging device includes: pinhole light source 210, it is set corresponding to the first side 110 of the plate to be detected 10;Pinhole camera mechanism 220, it is set corresponding to the second side 120 of the plate to be detected 10 and the pinhole camera mechanism 220 and the pinhole light source 210 are in the same optical path;Surface detection light source, it is set corresponding to the first side 110 and / or second side 120 of the plate to be detected 10;Surface detection camera mechanism, it is set corresponding to the first side 110 and / or second side 120 of the plate to be detected 10, and the surface detection camera mechanism and the surface detection light source are set on the same side.

[0039] Specifically, the to-be-detected plate 10 moves under the action of the conveying belt, the pinhole light source 210 emits light after being powered on, the pinhole camera mechanism 220 located in the same light path collects images of the second side 120 of the to-be-detected plate 10, in addition, the surface detection light source also emits light after being powered on, and the light is emitted to the surface (i.e. the first side 110 and / or the second side 120) of the to-be-detected plate 10, thereby illuminating and supplementing light for the surface of the to-be-detected plate 10, and then the surface detection camera mechanism collects images of the surface of the to-be-detected plate 10, so as to detect the pinholes, zinc residue points, edge cracks, scratches and other defects on the to-be-detected plate according to the collected image information, identify the surface defects of the zinc-aluminum-magnesium plate, and improve the quality of the product

[0040] Compared with the prior art, the imaging device is arranged on the conveying path of the to-be-detected plate 10, the pinhole light source 210 and the pinhole camera mechanism 220 are used to detect the pinholes on the to-be-detected plate 10, the surface detection light source and the surface detection camera mechanism are used to detect the zinc residue points, edge cracks, scratches and other defects on the to-be-detected plate 10, identify the surface defects of the zinc-aluminum-magnesium plate, and improve the quality of the product.

[0041] In the embodiment, the imaging device further comprises a first mounting bracket 251 and a second mounting bracket 252, the first mounting bracket 251 and the second mounting bracket 252 are arranged separately, wherein the first mounting bracket 251 is provided with the pinhole light source 210, the surface detection light source and the pinhole camera mechanism 220; the second mounting bracket 252 is provided with the surface detection camera mechanism. In the embodiment, the surface detection light source and the surface detection camera mechanism are arranged separately by the first mounting bracket 251 and the second mounting bracket 252, so that the surface detection light source on the first mounting bracket 251 can form a certain angle with the surface detection camera mechanism, so that the image collected by the surface detection camera mechanism can clearly see the defects on the surface; and the expandability in the later stage is considered. Further, the distance between the first mounting bracket 251 and the second mounting bracket 252 is 300mm-400mm.

[0042] Further, the first mounting bracket 251 and the second mounting bracket 252 are each provided with a mounting end 253, so as to mount the first mounting bracket 251 and the second mounting bracket 252 to the ground of the workshop or the cross beam of the workshop by the mounting end 253. For this purpose, the present application is divided into the first mounting bracket 251 and the second mounting bracket 252 mounted to the ground (at this time, the mounting end 253 is located at the lower end of the first mounting bracket 251 and the second mounting bracket 252) and the first mounting bracket 251 and the second mounting bracket 252 mounted to the cross beam (at this time, the mounting end 253 is located at the upper end of the first mounting bracket 251 and the second mounting bracket 252) according to the position of the mounting.

[0043] Further, the imaging device further comprises a plurality of light source protection tubes 261 and a plurality of camera protection shells 262, wherein the plurality of light source protection tubes 261 are respectively sleeved on the periphery of the pinhole light source 210 and the surface detection light source, the light source protection tube 261 is provided with a light transmission area, the pinhole light source 210 and the surface detection light source are protected by the light source protection tube 261, so as to avoid damage to the pinhole light source 210 and the surface detection light source after the breakage of the to-be-detected plate 10, and the pinhole light source 210 and the surface detection light source can emit light outward through the light transmission area;

[0044] A plurality of camera protection shells 262 are respectively sleeved on the periphery of the pinhole camera mechanism 220 and the surface detection camera mechanism, the camera protection shell 262 is provided with a shooting area, the pinhole camera mechanism 220 and the surface detection camera mechanism are protected by the camera protection shell 262, so as to avoid damage to the pinhole camera mechanism 220 and the surface detection camera mechanism after the breakage of the to-be-detected plate 10, and the pinhole camera mechanism 220 and the surface detection camera mechanism can collect images through the shooting area.

[0045] In an embodiment, the surface detection light source comprises a first surface detection light source 231 and a second surface detection light source 232, the first surface detection light source 231 is arranged corresponding to the first side 110 of the to-be-detected plate 10, and the second surface detection light source 232 is arranged corresponding to the second side 120 of the to-be-detected plate 10, so as to collect images of the first side 110 of the to-be-detected plate 10;

[0046] The surface detection camera mechanism comprises a first surface detection camera mechanism 241 and a second surface detection camera mechanism 242, the first surface detection camera mechanism 241 is arranged corresponding to the first side 110 of the to-be-detected plate 10, and the second surface detection camera mechanism 242 is arranged corresponding to the second side 120 of the to-be-detected plate 10, so as to collect images of the second side 120 of the to-be-detected plate 10.

[0047] Further, when the first surface inspection light source 231, the second surface inspection light source 232, the pinhole light source 210 and the pinhole camera mechanism 220 are all installed on the first mounting bracket 251, and the first surface inspection camera mechanism 241 and the second surface inspection camera mechanism 242 are all installed on the first mounting bracket 251, the first mounting bracket 251 and the second mounting bracket 252 are used to be mounted on the workshop floor;

[0048] When the second surface inspection light source 232, the pinhole light source 210 and the pinhole camera mechanism 220 are all installed on the first mounting bracket 251, and the second surface inspection camera mechanism 242 is all installed on the first mounting bracket 251, the first mounting bracket 251 and the second mounting bracket 252 are mounted on the crossbeam, and the first surface inspection light source 231 and the first surface inspection camera mechanism 241 are correspondingly arranged at other positions (for example, near the transmission roller 310). At this time, the angle between the light emitted by the first surface inspection light source 231 and the light received by the first surface inspection camera mechanism 241 is between 25° and 90°.

[0049] In an embodiment, the zinc-aluminum-magnesium plate surface defect online surface inspection system further comprises a control device, which is electrically connected with the pinhole camera mechanism 220 and the surface inspection camera mechanism, is used to acquire image information emitted by the pinhole camera mechanism 220 and the surface inspection camera mechanism, and is used to analyze and process the image information by using the control device to find out defects on the plate surface. It should be noted that, in the present application, the defects in the image information can be recognized by comparing with a standard image, can be recognized by using an algorithm learning method, or can be recognized by using other means in the art, and the processing method of the signal is not limited in the present application.

[0050] If the pinhole exists on the plate to be detected 10, the light emitted by the pinhole light source 210 will be displayed on the image. If the ten defects such as white spots, leakage, insects, chrome yellow marks, zinc residue marks, wrinkles, pinholes, black spots, edge cracks and zinc scars exist on the plate to be detected 10, the above defects will also be displayed on the image.

[0051] Further, the zinc-aluminum-magnesium plate surface defect online surface inspection system further comprises an encoder 320, which is arranged on the end surface of the transmission roller 310 on the conveying path of the plate to be detected 10. The encoder 320 is also electrically connected with the control device, so as to know the position of the defect of the plate to be detected 10 by using the encoder 320.

[0052] According to the disclosure and teaching of the above description, the skilled in the art of the present application can also change and modify the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A zinc-aluminum-magnesium sheet surface defect on-line surface inspection system, characterized by, The imaging device is located on a conveying path of a board to be detected, the board to be detected has a first side and a second side; the imaging device comprises: a pinhole light source arranged corresponding to the first side of the board to be detected; a pinhole camera mechanism arranged corresponding to the second side of the board to be detected and in the same optical path with the pinhole light source; a surface inspection light source arranged corresponding to the first side and / or the second side of the board to be detected; a surface inspection camera mechanism arranged corresponding to the first side and / or the second side of the board to be detected and on the same side with the surface inspection light source.

2. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 1, wherein: the imaging device further comprises a first mounting bracket and a second mounting bracket, the first mounting bracket and the second mounting bracket are arranged separately, wherein, the pinhole light source, the surface inspection light source and the pinhole camera mechanism are arranged on the first mounting bracket; the surface inspection camera mechanism is arranged on the second mounting bracket.

3. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 2, wherein: the first mounting bracket and the second mounting bracket are both provided with a mounting end.

4. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 2, wherein: the distance between the first mounting bracket and the second mounting bracket is 300-400 mm.

5. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 2, wherein: the imaging device further comprises a plurality of light source protection tubes and a plurality of camera protection shells, wherein, the plurality of light source protection tubes are respectively sleeved on the periphery of the pinhole light source and the surface inspection light source, and the light source protection tubes are provided with a light transmission area; the plurality of camera protection shells are respectively sleeved on the periphery of the pinhole camera mechanism and the surface inspection camera mechanism, and the camera protection shells are provided with a shooting area.

6. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to any one of claims 2-5, wherein: the surface inspection light source comprises a first surface inspection light source arranged corresponding to the first side of the board to be detected and a second surface inspection light source arranged corresponding to the second side of the board to be detected; the surface inspection camera mechanism comprises a first surface inspection camera mechanism arranged corresponding to the first side of the board to be detected and a second surface inspection camera mechanism arranged corresponding to the second side of the board to be detected.

7. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 1, further comprising a control device electrically connected with the pinhole camera mechanism and the surface inspection camera mechanism, for acquiring image information emitted by the pinhole camera mechanism and the surface inspection camera mechanism.

8. The online surface inspection system for surface defects of zinc-aluminum-magnesium plates according to claim 7, wherein: ​ ​ The zinc-aluminum-magnesium plate surface defect on-line detection system further comprises an encoder arranged on the end surface of a transmission roller on the conveying path of the plate to be detected; and the encoder is further electrically connected with the control device.

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