CN219870989U - Surface defect detecting device - Google Patents

Abstract

The utility model relates to the technical field of machine vision detection, in particular to a surface defect detection device, which comprises: the device comprises a control module, a shell, an image projection module and an image acquisition module; the control module is positioned outside the shell and is respectively and electrically connected with the image projection module and the image acquisition module; the control module is configured to: controlling an image projection module to project a preset image to a surface to be detected, and controlling an image acquisition module to acquire a target detection image reflected by the surface to be detected after the preset image is projected; wherein the preset image includes an image of a repeating pattern in a preset direction. According to the surface defect detection device provided by the utility model, the control module of the surface defect detection device is arranged outside the shell, so that a plurality of sets of image projection modules and image acquisition modules can share one control module, and the cost is reduced; the shell is not required to be disassembled when the control module is debugged, so that the debugging is convenient; and also reduces the operating noise of the surface defect detecting device.

Description

Surface defect detecting device

Technical Field

The utility model relates to the technical field of machine vision detection, in particular to a surface defect detection device.

Background

A surface defect detecting device is generally a device for detecting whether a surface to be detected has defects such as scratches, bumps, and the like, for example: automotive paint, furniture paint, and the like.

At present, a surface defect detection device mostly comprises a shell, an industrial control module arranged in the shell, and a display screen and a camera which are simultaneously arranged on the shell. The device mainly projects a preset image to the surface to be detected, a camera collects an image reflected by the surface to be detected of the projected preset image, and whether the surface has defects or not is obtained by analyzing the collected image.

However, since the components of such devices are integrated within the housing, and a corresponding number of industrial control modules or control modules are required to control each set of image projection modules and image acquisition modules, the cost of producing and manufacturing the surface defect detection device is high, and debugging of the device is inconvenient.

Disclosure of Invention

The utility model aims to provide a surface defect detection device, which is characterized in that a control module is externally arranged, and a plurality of sets of image projection modules and image acquisition modules are controlled by the same control module, so that the cost of each surface defect detection device is reduced, and the surface defect detection device can be conveniently debugged.

The utility model provides a surface defect detection device, comprising: the device comprises a control module, a shell, an image projection module and an image acquisition module, wherein the image projection module and the image acquisition module are arranged on the shell; the control module is positioned outside the shell and is respectively and electrically connected with the image projection module and the image acquisition module; the shell is internally provided with a first chamber and a second chamber which are distributed along a first direction, wherein the second chamber comprises a first subchamber, a second subchamber and a third subchamber which are distributed along a second direction; wherein the first direction is not parallel to the second direction; the second chamber has an opening; the image projection module is arranged on the shell, covers the first subchamber, the second subchamber and the third subchamber, and is configured to project a preset image to the surface to be detected under the control of the control module; the image acquisition module is arranged in the first cavity and is configured to acquire a target detection image reflected by the surface to be detected after the preset image is projected under the control of the control module; wherein the preset image includes an image of a repeating pattern in a preset direction.

According to the surface defect detection device, the control module of the surface defect detection device is arranged outside the shell, so that the combination of the plurality of sets of image projection modules and the image acquisition module can share one control module, the number of the control modules is reduced on the premise of ensuring the efficiency and the detection precision, and the cost is further reduced. And when the control module is required to be debugged, the shell is not required to be disassembled, so that the surface defect detection device is convenient to debug. In addition, the control module is arranged outside, so that the overall noise of the surface defect detection device during working is reduced. In addition, the first chamber, the first subchamber, the second subchamber and the third subchamber which are divided according to the first direction and the second direction in the shell are reasonably planned, so that the space inside the shell is reasonably planned, and the distribution of electronic elements inside the shell is more uniform and reasonable.

Optionally, the target detection image includes a first sub-image and a second sub-image; the image acquisition module comprises a first image acquisition unit and a second image acquisition unit; the field of view of the first image acquisition unit covers the first sub-image and is configured to acquire the first sub-image under the control of the control module; the field of view of the second image acquisition unit covers the second sub-image and is configured to acquire the second sub-image under the control of the control module.

According to the surface defect detection device, the image acquisition module is configured into the corresponding sub-images in the plurality of acquisition target detection images, so that the image acquisition range is enlarged, and the efficiency of detecting the surface to be detected is improved.

Optionally, the housing comprises a first shell plate; the image projection module and the image acquisition module are distributed on the first shell plate according to a first direction; the first image acquisition units and the second image acquisition units are distributed on the first shell plate according to a second direction perpendicular to the first direction.

According to the surface defect detection device, the first image acquisition unit, the second image acquisition unit and the image projection module are distributed on the same side face of the shell, the distribution direction of the image acquisition module and the image projection module is perpendicular to the distribution direction of the first image acquisition unit and the second image acquisition unit, and the size of the surface defect detection device is reduced under the condition that the size of the image acquisition range is ensured as much as possible.

Optionally, the apparatus further comprises a hub; the first connecting end of the hub is connected with the first image acquisition unit, the second connecting end of the hub is connected with the second image acquisition unit, and the third connecting end of the hub is connected with the control module.

According to the surface defect detection device, the hub is configured for the surface defect detection device, so that the number of ports of the control module is reduced.

Optionally, the field of view of the image acquisition module is located on one side of the first shell plate; the hub is located on the other side of the first shell plate.

According to the surface defect detection device, the hub is arranged on the side, opposite to the first shell plate, of the acquisition view field of the image acquisition module, so that the space required by arranging the hub is saved, and the size of the surface defect detection device is reduced.

Optionally, the apparatus further comprises a power module for supplying power; the power module is configured to supply power to elements in the surface defect detection device; the device comprises a control module, an image projection module, a first image acquisition unit and a second image acquisition unit, wherein the element comprises a first image acquisition unit and a second image acquisition unit; and the two ends are respectively arranged in the first subchamber, the second subchamber and the third subchamber.

According to the surface defect detection device, the distribution mode of the power module and the concentrator on the shell improves the utilization rate of the space provided by the shell, and the weight distribution of the surface defect detection device is more uniform.

Optionally, the control module comprises a control unit and an operation unit; the control unit is connected with the operation unit; the control unit is configured to: controlling the image projection module to project a preset image to the surface to be detected; and controlling the image acquisition module to acquire the target detection image; the arithmetic unit is configured to receive and analyze the image to be analyzed from the image acquisition module.

According to the surface defect detection device, the control unit and the operation unit respectively execute control and operation analysis, so that the stability and the detection efficiency of the surface defect detection device are improved.

Optionally, the device further comprises a heat dissipation module; the heat dissipation module is arranged on the shell and is configured to: radiating heat for the image projection module and/or the image acquisition module; the shell also comprises a second shell plate connected with the edge of the first shell plate; the heat dissipation module comprises a first heat dissipation unit and a second heat dissipation unit; the first heat dissipation units and the second heat dissipation units are distributed on the second shell plate according to a preset direction; the preset direction is parallel to the plane where the image projection module is located.

According to the surface defect detection device, the heat dissipation module for dissipating heat of the image projection module is configured for the surface defect detection device, so that the heat dissipation efficiency of the image projection module is improved, and the working stability of the surface defect detection device is improved. Further, each heat radiating unit in the heat radiating module is arranged at the edge of the image projection module and distributed along the direction in the plane where the heat radiating unit is located, so that the heat radiating area of the heat radiating module on the image projection module is increased, and further the heat radiating efficiency is further improved.

Optionally, the shell is provided with a heat dissipation hole; the heat dissipation holes are configured to dissipate heat for the image projection module and/or the image acquisition module through heat exchange between the inside and the outside of the shell; the housing further includes a third shell plate opposite the first shell plate; the heat dissipation holes are formed in the third shell plate, and the projection of the heat dissipation holes on the plane where the first shell plate is located in the projection of the image projection module and/or the image acquisition module on the plane where the first shell plate is located.

According to the surface defect detection device, the heat dissipation efficiency is improved by configuring the heat dissipation holes for the image projection module and/or the image acquisition module. Further, the radiating holes are arranged on the shell plate opposite to the image projection module, and the projection is positioned in the projection range of the image projection module and/or the image acquisition module, so that the radiating holes face the image projection module and/or the image acquisition module as much as possible, and the radiating efficiency is further improved.

Optionally, the surface to be detected comprises an automotive paint.

According to the surface defect detection device, the surface defect detection device provided by the utility model is applied to detection of the automobile paint surface, so that debugging in the detection process of the automobile paint surface is facilitated. Meanwhile, the heat dissipation efficiency of the surface defect detection device is improved, and the working stability is improved.

In summary, according to the surface defect detection device provided by the utility model, the control modules of the surface defect detection device are arranged outside the shell, so that the combination of the plurality of sets of image projection modules and the image acquisition module can share one control module, the number of the control modules is reduced on the premise of ensuring the detection efficiency and the detection precision, and the cost is further reduced; the surface defect detection device is convenient to debug, and the overall noise during working is reduced. By configuring a plurality of image acquisition units, the range of image acquisition is enlarged, and the efficiency of detecting the surface to be detected is improved. In addition, the layout mode of the hub and the power module in the surface defect detection device saves the space occupied by the hub and the power module, reduces the size of the surface defect detection device, and ensures that the weight distribution of the device is more uniform. In addition, through configuration heat dissipation module and louvre, improved surface defect detection device's radiating efficiency, and then improved the stability of during operation. Especially, the surface defect detection device is applied to defect detection of the automobile paint surface, so that the convenience in debugging of the device in the detection process and the working stability are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a functional block diagram of a first surface defect detecting device according to an embodiment of the present utility model;

FIG. 2 is a functional block diagram of a second surface defect detecting device according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of a first preset image according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a second preset image according to an embodiment of the present utility model;

fig. 5 is a schematic diagram of a third preset image according to an embodiment of the present utility model;

fig. 6 is a schematic diagram of a fourth preset image according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of a fifth preset image according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of a sixth preset image according to an embodiment of the present utility model;

FIG. 9 is a functional block diagram of a third surface defect detecting device according to an embodiment of the present utility model;

FIG. 10 is a partial perspective view of a third surface defect inspection apparatus according to an embodiment of the present utility model;

FIG. 11 is a functional block diagram of a fourth surface defect detecting device according to an embodiment of the present utility model;

fig. 12 is a partial perspective view of a fourth surface defect detecting device according to an embodiment of the present utility model.

Icon: 100. a surface defect detecting device; 110. a control module; 111. a control unit; 112. an arithmetic unit; 120. a housing; 121. a first shell plate; 122. a second shell plate; 123. a third shell plate; 124. a first chamber; 125. a second chamber; 1251. a first subchamber; 1252. a second subchamber; 1253. a third subchamber; 130. an image projection module; 140. an image acquisition module; 141. a first image acquisition unit; 142. a second image acquisition unit; 150. a hub; 160. a power module; 170. a heat dissipation module; 171. a first heat dissipation unit; 172. a second heat dissipation unit; 180. and the heat dissipation holes.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a functional block diagram of a first surface defect detecting device 100 according to an embodiment of the utility model. The surface defect detecting device 100 provided by the utility model comprises: the device comprises a control module 110, a shell 120, an image projection module 130 and an image acquisition module 140, wherein the image projection module 130 and the image acquisition module 140 are arranged on the shell 120. The control module 110 is located outside the housing 120 and is electrically connected to the image projection module 130 and the image acquisition module 140, respectively. The housing 120 has a first chamber 124 and a second chamber 125 disposed therein along a first direction, the second chamber 125 including a first sub-chamber 1251, a second sub-chamber 1252, and a third sub-chamber 1251 disposed therein along a second direction; wherein the first direction is not parallel to the second direction. The image projection module is disposed on the housing and covers the first sub-chamber 1251, the second sub-chamber 1252, and the third sub-chamber 1251. And is configured to project a preset image to the surface to be inspected under the control of the control module 110. The image acquisition module 140 is disposed in the first chamber 124 and configured to acquire a target detection image reflected by the surface to be measured after the preset image is projected under the control of the control module 11. Wherein the preset image includes an image of a repeating pattern in a preset direction.

The surface defect detection device 100 provided by the utility model can detect polished surfaces of workpieces, optical elements, automobiles, furniture and the like besides automobile paint surfaces and furniture paint surfaces. Wherein the image projection module 130 may comprise an industrial display screen and the image acquisition module 140 may comprise a camera. The field of view of the image acquisition module 140 may partially or fully cover the surface to be measured. Of course, the image capturing module 140 and/or the image projecting module 130 may be adjustably mounted on the housing 120, and the angle can be adjusted accordingly according to the detection requirement.

The control module 110 may be disposed on an outer surface of the housing 120 or may be disposed at a distance from the housing 120. The connection between the control module 110 and the image projection module 130 and the image acquisition module 140 may be a wired connection or a wireless connection. The control module 110 may be used for analyzing the acquired image and outputting a detection result of the surface to be detected through analysis, in addition to controlling the image acquisition module 140 and the image projection module 130. Of course, the control module 110 may not participate in analyzing the acquired image.

The first direction and the second direction may be perpendicular to each other or may not be perpendicular to each other. The length of the first chamber 124 in the second direction may be equal to the length of the first chamber 124 in the second direction. The first chamber 124 may be used to house the image capturing module 140, taking as an example an image capturing module a camera, which may be wholly or partially located in the first chamber 124, but the lens of the camera is required to capture a preset image of the outside world, especially the surface to be measured, when projected.

The first, second, and third sub-chambers 1251, 1252, and 1251 are arranged in a second direction, and in the second direction, the arrangement order thereof may be "first, second, third, and third sub-chambers 1251, and 1252", "third, and 1251, first and second sub-chambers 1251, … …", which is not particularly limited in the present utility model.

Referring to fig. 2, fig. 2 is a functional block diagram of a second surface defect detecting device 100 according to an embodiment of the utility model. Under the condition that the control module 110 is external, one control module 110 can be connected with the combination of the plurality of sets of image projection modules 130 and the image acquisition module 140 at the same time according to actual requirements, so that the number of the control modules 110 is saved on the premise of ensuring the detection efficiency and the precision. The combination of the image projection modules 130 and the image acquisition modules 140 may be 2, 3, 4, 5, etc., which is not particularly limited in the present utility model.

Referring to fig. 3, fig. 4, fig. 5, fig. 6 and fig. 8, fig. 3 is a schematic diagram of a first preset image according to an embodiment of the present utility model; FIG. 4 is a schematic diagram of a second preset image according to an embodiment of the present utility model; FIG. 5 is a schematic diagram of a third preset image according to an embodiment of the present utility model; FIG. 6 is a schematic diagram of a fourth preset image according to an embodiment of the present utility model; fig. 7 is a schematic diagram of a fifth preset image according to an embodiment of the present utility model; fig. 8 is a schematic diagram of a sixth preset image according to an embodiment of the present utility model. The image of the repeating pattern in the predetermined direction may be an image of the repeating pattern in a vertical or horizontal direction or an image of the repeating pattern in a radial direction of the center of the image. The preset image may be, for example, a vertical stripe image as shown in fig. 4 and 6, a horizontal stripe image as shown in fig. 3 and 5, a ring-shaped light wave image as shown in fig. 7 and 8, an interference pattern, etc., and particularly, regarding an image repeated in a preset direction, the size of the repeated image may be identical or not identical, and as described in fig. 7 and 8, the repeated ring-shaped light wave may be gradually narrowed or gradually widened, as previously described, and the embodiment of the present utility model is not particularly limited.

In the implementation process, the control module 110 of the surface defect detection device 100 is arranged outside the shell 120, so that the combination of the plurality of sets of image projection modules 130 and the image acquisition module 140 can share one control module 110, and the number of the control modules 110 is reduced on the premise of improving the detection efficiency, thereby reducing the cost; when the control module 110 needs to be debugged, the shell 120 does not need to be disassembled, so that the surface defect detection device 100 is convenient to debug. In addition, the external arrangement of the control module 110 also reduces overall noise during operation of the surface defect detection device 100. In addition, the first chamber 124, the first sub-chamber 1251, the second sub-chamber 1252 and the third sub-chamber 1251, which are defined in the housing 120 according to the first direction and the second direction, reasonably plan the space inside the housing 120, so that the electronic components inside the housing 120 are distributed more uniformly and reasonably.

Referring to fig. 9, fig. 9 is a functional block diagram of a third surface defect detecting device 100 according to an embodiment of the present utility model; in an alternative embodiment, the object-detection image comprises a first sub-image and a second sub-image. The image acquisition module 140 includes a first image acquisition unit 141 and a second image acquisition unit 142. The field of view of the first image acquisition unit 141 covers the first sub-image and is configured to acquire the first sub-image under the control of the control module 110. The field of view of the second image acquisition unit 142 covers the second sub-image and is configured to acquire the second sub-image under the control of the control module 110.

The target detection image may further include a third sub-image, a fourth sub-image, a fifth sub-image, and the like, where the images may be corresponding portions of several portions divided by the target detection image, and also are located at different positions on the surface to be detected.

Accordingly, the image capturing module 140 further includes a third image capturing unit, a fourth image capturing unit, a fifth image capturing unit, and so on, which may be a camera. Different image acquisition units correspondingly acquire sub-images at different positions on the surface to be detected.

In the implementation process, the image acquisition module 140 is configured to acquire corresponding sub-images in the target detection images, so that the image acquisition range is enlarged, and the efficiency of detecting the surface to be detected is improved.

With continued reference to fig. 11, in an alternative embodiment, the housing 120 includes a first shell plate 121. The image projection module 130 and the image acquisition module 140 are distributed over the first housing plate 121 in a first direction. Wherein the first image capturing unit 141 and the second image capturing unit 142 are distributed over the first casing plate 121 in a second direction perpendicular to the first direction.

The first shell 121 may be one of a plurality of shells of the housing 120. Illustratively, the housing 120 is in a rectangular parallelepiped shape, and the first shell plate 121 may be a shell plate corresponding to one face of the rectangular parallelepiped. Accordingly, the first direction may be the direction in which the "length" is located among the "length", "width", and "height" of the rectangular parallelepiped, and the second direction may be the direction in which the "width" is located.

That is, the center point of the image capturing module 140 including the first and second image capturing units 141 and 142 is parallel to the first direction with the line connecting the center point of the image projection module 130; the center point of the first image capturing unit 141 and the center point of the second image capturing unit 142 are connected in parallel to the second direction.

The image capturing module 140 is a rectangular display screen, and the image capturing module 140 includes a plurality of cameras, and the plurality of cameras may be distributed on one side of the long side along the direction of the long side of the rectangle, or on one side of the wide side along the direction of the wide side of the rectangle.

In the above implementation process, the first image capturing unit 141, the second image capturing unit 142 and the image projection module 130 are distributed on the same side of the housing 120, and the distribution directions of the image capturing module 140 and the image projection module 130 are perpendicular to the distribution directions of the first image capturing unit 141 and the second image capturing unit 142, so that the size of the surface defect detecting device 100 is reduced under the condition that the size of the image capturing range is ensured as much as possible.

With continued reference to fig. 9, fig. 3 in an alternative embodiment, the apparatus further includes a hub 150. The hub 150 has a first connection terminal connected to the first image capturing unit 141, a second connection terminal connected to the second image capturing unit 142, and a third connection terminal connected to the control module 110.

In the case that the image capturing module 140 further includes the third image capturing unit, the fourth image capturing unit, and the fifth image capturing unit … …, the hub 150 further includes the third connecting end, the fourth connecting end, and the fifth connecting end … …, and is connected to the third image capturing unit, the fourth image capturing unit, and the fifth image capturing unit … …, respectively.

In the above implementation, by configuring hub 150 for surface defect inspection device 100, the number of ports used by control module 110 is reduced.

Referring to fig. 10, fig. 10 is a partial perspective view of a third surface defect detecting device 100 according to an embodiment of the utility model. In an alternative embodiment, the field of view of the image acquisition module 140 is located on one side of the first housing plate 121. Hub 150 is located on the other side of first housing plate 121.

The image acquisition module 140 may be mounted on the first shell 121, and the field of view of image acquisition is located on the side of the outer surface of the first shell 121. Accordingly, hub 150 may be located on the side of the inner surface of first housing plate 121.

In the above implementation, by disposing hub 150 on the side of the acquisition field of view of image acquisition module 140 opposite to first housing plate 121, space required for disposing hub 150 is saved, and the size of surface defect detecting device 100 is reduced.

Please continue to refer to fig. 4. In an alternative embodiment, the apparatus further comprises a power module 160 for supplying power. The power module 160 is configured to supply power to the components in the surface defect detection apparatus 100. The components include a control module 110, an image projection module 130, a first image acquisition unit 141, and a second image acquisition unit 142.

That is, the power module 160 supplies power to each element of the surface defect detecting device 100 that needs to be supplied with power.

The power module 160 and the hub 150 are disposed on two sides of the housing 120120 in the first sub-chamber 1251, the second sub-chamber 1252 and the third sub-chamber 1251, respectively.

Illustratively, the first sub-chamber 1251, the second sub-chamber 1252 and the third sub-chamber 1251 are arranged in the second direction in the order of "the first sub-chamber 1251, the second sub-chamber 1252 and the third sub-chamber are accommodated", and then the power module 160 and the hub 150 may be respectively located in the first sub-chamber 1251 and the third sub-chamber 1251, and the other arrangements are the same.

In the above implementation process, the above-mentioned distribution manner of the power module 160 and the hub 150 on the housing 120 improves the utilization rate of the space provided by the housing 120, and further makes the weight distribution of the surface defect detecting device 100 more uniform.

Referring to fig. 11, fig. 11 is a functional block diagram of a fourth surface defect detecting device 100 according to an embodiment of the utility model. In an alternative embodiment, the control module 110 includes a control unit 111 and an operation unit 112. The control unit 111 is connected to the arithmetic unit 112. The control unit 111 is configured to: controlling the image projection module 130 to project a preset image to the surface to be detected; and controlling the image acquisition module 140 to acquire the target detection image. The arithmetic unit 112 is configured to receive and analyze the image to be analyzed from the image acquisition module 140.

The above-described operation unit 112 includes, but is not limited to, a power box.

In the above implementation process, the control unit 111 and the operation unit 112 perform control and operation analysis, respectively, so as to improve the stability and detection efficiency of the surface defect detection device 100.

Please continue to refer to fig. 10. In an alternative embodiment, surface defect detection device 100 further includes a heat dissipation module 170. The heat dissipation module 170 is disposed on the housing 120 and configured to: heat is dissipated for the image projection module 130 and/or the image acquisition module 140. The housing 120 further includes a second shell 122 connected to the first shell 121 at an edge thereof. The heat dissipation module 170 includes a first heat dissipation unit 171 and a second heat dissipation unit 172. The first heat radiating units 171 and the second heat radiating units 172 are distributed on the second shell plate 122 in a predetermined direction. The preset direction is parallel to the plane of the image projection module 130.

Taking the case 120 of a rectangular parallelepiped shape as an example, the second shell 122 may be a shell adjacent to the first shell 121, and in the case 120 of a rectangular parallelepiped shape, the shell adjacent to the first shell 121 is generally surrounded at its edge. In this manner, the first heat dissipating unit 171 and the second heat dissipating unit 172 can be located at the edge of the image projection module 130, and the heat dissipating module 170 may further include a third heat dissipating unit, a fourth heat dissipating unit, and the like. The heat dissipating units may be heat dissipating fans.

The plane in which the image projection module 130 is located may be a plane in which a surface having the largest area is located among the surfaces formed by the outer contours thereof. Taking an industrial display as an example, the plane on which the image projection module 130 is located may be the plane on which the screen display surface of the industrial display is located.

In the above implementation process, by configuring the surface defect detection device 100 as the heat dissipation module 170 for dissipating heat of the image projection module 130, the heat dissipation efficiency of the image projection module 130 is improved, so that the working stability of the surface defect detection device 100 is improved. Further, each heat dissipation unit in the heat dissipation module 170 is disposed at the edge of the image projection module 130 and distributed along the direction in the plane where the heat dissipation unit is located, so that the area of the heat dissipation module 170 for dissipating heat from the image projection module 130 is increased, and further, the heat dissipation efficiency is further improved.

Referring to fig. 12 in conjunction with fig. 10, fig. 12 is a partial perspective view of a fourth surface defect detecting device 100 according to an embodiment of the present utility model. In an alternative embodiment, the housing 120 is provided with heat dissipation holes 180. The heat dissipation holes 180 are configured to dissipate heat from the image projection module 130 and/or the image capture module 140 through heat exchange between the inside and outside of the housing 120. The housing 120 further includes a third housing plate 123 opposite the first housing plate 121. The heat dissipation hole 180 is formed on the third shell 123, and the projection of the heat dissipation hole 180 on the plane of the first shell 121 is located within the projection of the image projection module 130 on the plane of the first shell 121.

The heat dissipation hole 180 may be a hole with a relatively large size, or may be a plurality of holes with a relatively small size. The heat dissipation hole 180 is disposed on the third shell plate 123 opposite to the first shell plate 121, and the projection of the heat dissipation hole 180 is located within the projection range of the image projection module 130 and/or the image acquisition module 140, so that the heat dissipation hole 180 faces the image projection module 130 and/or the image acquisition module 140 as much as possible.

In the above implementation process, by configuring the heat dissipation holes 180 for the image projection module 130 and/or the image acquisition module 140, the heat dissipation efficiency is improved. Further, by disposing the heat dissipation hole 180 on the shell plate opposite to the image projection module 130, and the projection is located within the projection range of the image projection module 130 and/or the image acquisition module 140, the heat dissipation hole 180 faces the image projection module 130 and/or the image acquisition module 140 as much as possible, so as to further improve the heat dissipation efficiency.

In an alternative embodiment, the surface to be inspected comprises an automotive paint.

In the process of detecting the defects of the paint surface of the automobile, the properties of each surface of the automobile to be painted, such as radian of the surface, color and area of the painted paint, and the like, are different. Therefore, when performing defect detection on different automotive paint surfaces, debugging of the detection device may be involved. The industrial control module of the detection device is integrated inside the housing 120, which brings inconvenience to debugging of the detection device.

In the implementation process, the surface defect detection device 100 provided by the utility model is applied to the detection of the automobile paint surface, so that the debugging in the detection process of the automobile paint surface is facilitated. Meanwhile, by improving the heat radiation efficiency of the surface defect detecting device 100, the stability of the operation is also improved.

In summary, according to the surface defect detecting device 100 provided by the embodiments of the present utility model, the control module 110 of the surface defect detecting device 100 is disposed outside the housing 120, so that the combination of the plurality of sets of image projection modules 130 and the image acquisition module 140 can share one control module 110, and the number of control modules 110 is reduced on the premise of ensuring the detecting efficiency and the detecting precision, thereby reducing the cost; it also facilitates the debugging of the surface defect detecting apparatus 100 and reduces the overall noise during operation. By configuring a plurality of image acquisition units, the range of image acquisition is enlarged, and the efficiency of detecting the surface to be detected is improved. In addition, the layout of the hub 150 and the power module 160 in the surface defect detecting device 100 saves the space occupied by the hub and the power module, reduces the size of the surface defect detecting device 100, and makes the weight distribution of the device more uniform. In addition, by configuring the heat dissipation module 170 and the heat dissipation hole 180, the heat dissipation efficiency of the surface defect detecting device 100 is improved, and thus the stability during operation is improved. Especially, the surface defect detection device 100 is applied to defect detection of the automobile paint surface, and the convenience of debugging the device in the detection process and the working stability are improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A surface defect inspection apparatus, comprising: the device comprises a control module, a shell, an image projection module and an image acquisition module;

the control module is positioned outside the shell and is respectively and electrically connected with the image projection module and the image acquisition module;

the shell is internally provided with a first chamber and a second chamber which are distributed along a first direction, wherein the second chamber comprises a first subchamber, a second subchamber and a third subchamber which are distributed along a second direction; wherein the first direction is not parallel to the second direction;

the image projection module is arranged on the shell, covers the first subchamber, the second subchamber and the third subchamber, and is configured to project a preset image to the surface to be detected under the control of the control module;

the image acquisition module is arranged in the first cavity and is configured to acquire a target detection image reflected by the surface to be detected after the preset image is projected under the control of the control module;

wherein the preset image includes an image of a repeating pattern in a preset direction.

2. The surface defect detection apparatus of claim 1, wherein the target detection image comprises a first sub-image and a second sub-image;

the image acquisition module comprises a first image acquisition unit and a second image acquisition unit;

the field of view of the first image acquisition unit covers the first sub-image and is configured to acquire the first sub-image under the control of the control module;

the field of view of the second image acquisition unit covers the second sub-image and is configured to acquire the second sub-image under the control of the control module.

3. The surface defect inspection apparatus of claim 2 wherein the housing comprises a first shell plate;

the image projection module and the image acquisition module are distributed on the first shell plate according to a first direction;

the first image acquisition units and the second image acquisition units are distributed on the first shell plate according to a second direction perpendicular to the first direction.

4. The surface defect inspection apparatus of claim 3, further comprising a hub;

the first connecting end of the hub is connected with the first image acquisition unit, the second connecting end of the hub is connected with the second image acquisition unit, and the third connecting end of the hub is connected with the control module.

5. The surface defect inspection apparatus of claim 4 wherein the field of view of the image acquisition module is located on one side of the first skin;

the hub is located on the other side of the first shell plate.

6. The surface defect detection apparatus of claim 4, further comprising a power module for supplying power;

the power module is configured to supply power to elements in the surface defect detection device; the device comprises a control module, an image projection module, a first image acquisition unit and a second image acquisition unit, wherein the element comprises a first image acquisition unit and a second image acquisition unit;

the power module and the hub are respectively arranged at the two ends of the first subchamber, the second subchamber and the third subchamber.

7. The surface defect detection apparatus according to claim 1, wherein the control module includes a control unit and an arithmetic unit;

the control unit is connected with the operation unit;

the control unit is configured to: controlling the image projection module to project a preset image to the surface to be detected; and controlling the image acquisition module to acquire the target detection image;

the arithmetic unit is configured to receive and analyze an image to be analyzed from the image acquisition module.

8. The surface defect inspection apparatus of claim 3, further comprising a heat dissipation module;

the heat dissipation module is arranged on the shell and is configured to: radiating heat for the image projection module and/or the image acquisition module;

the shell also comprises a second shell plate connected with the edge of the first shell plate;

the heat dissipation module comprises a first heat dissipation unit and a second heat dissipation unit;

the first heat dissipation units and the second heat dissipation units are distributed on the second shell plate according to a preset direction; the preset direction is parallel to the plane where the image projection module is located.

9. The surface defect detection apparatus according to claim 3, wherein the housing is provided with a heat radiation hole;

the heat dissipation holes are configured to dissipate heat for the image projection module and/or the image acquisition module through heat exchange between the inside and the outside of the shell;

the housing further includes a third shell plate opposite the first shell plate;

the heat dissipation holes are formed in the third shell plate, and the projection of the heat dissipation holes on the plane where the first shell plate is located in the projection of the image projection module and/or the image acquisition module on the plane where the first shell plate is located.

10. The surface defect detection apparatus as claimed in any one of claims 1 to 9, wherein the surface to be detected comprises an automotive paint.