Surface detection device

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a surface detection device which is used for detecting a to-be-detected workpiece with a groove in the top. The first strip-shaped light source is rotatably mounted on the mounting frame and is used for emitting light to the outer side surface of the to-be-detected workpiece; the high-brightness strip-shaped light source is rotatably mounted on the mounting frame, is positioned on one side of the top of the first strip-shaped light source, and is used for emitting light to the peripheral fillet of the top of the to-be-detected workpiece and the groove wall of the groove; the plane coaxial light source is mounted on one side of the top of the mounting frame, and the plane coaxial light source is located on one side of the top of the highlight strip-shaped light source and used for emitting light to a groove of a workpiece to be detected; and the detection camera is used for photographing a to-be-detected workpiece, and the detection camera is mounted on one side of the top of the planar coaxial light source. The surface detection device provided by the utility model can detect the workpiece to be detected with a groove at the top more accurately and quickly.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection technology, and in particular to a surface inspection device. Background Technology

[0002] In the field of machine vision inspection technology, the light source is one of the important components, and the quality of the light source will directly affect the inspection efficiency and accuracy.

[0003] Existing surface inspection light sources generally use a coaxial light source to illuminate the top surface of the workpiece from top to bottom. Then, the inspection camera captures the image of the top surface of the workpiece and determines whether there are surface defects. The above-mentioned surface inspection light source has poor inspection effect on workpieces with grooves on the top. It can only provide good illumination to the bottom wall of the groove and cannot accurately highlight defects on the inner wall surface of the groove, the surrounding rounded corners, and the outer surface of the workpiece. Therefore, it is necessary to perform multiple inspections at other inspection stations, resulting in low inspection efficiency.

[0004] Therefore, there is a need to design a surface inspection device that can more accurately and quickly inspect workpieces with grooves on the top.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a surface inspection device that can more accurately and quickly inspect workpieces with grooves on the top.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A surface inspection device for inspecting a workpiece with a groove on its top, comprising:

[0009] Mounting rack;

[0010] The first strip light source is rotatably mounted on the mounting bracket and is used to emit light onto the outer surface of the workpiece to be tested;

[0011] A high-brightness strip light source is rotatably mounted on the mounting bracket and located on the top side of the first strip light source, used to emit light to the peripheral rounded corners and groove walls of the top of the workpiece to be tested;

[0012] A planar coaxial light source is installed on the top side of the mounting bracket, and the planar coaxial light source is located on the top side of the high-brightness strip light source, for projecting light into the groove of the workpiece to be tested;

[0013] An inspection camera is used to take pictures of the workpiece to be inspected, and the inspection camera is installed on the top side of the planar coaxial light source.

[0014] Optionally, a first rotating shaft is mounted on the first strip light source, the mounting bracket is provided with a first rotating hole for matching the first rotating shaft, and a first adjusting arc hole is provided on the mounting bracket around the first rotating hole. A first sliding column that can slide along the first adjusting arc hole is also mounted on the first strip light source.

[0015] A second rotating shaft is installed on the high-brightness strip light source, and a second rotating hole for matching the second rotating shaft is provided on the mounting bracket. A second adjusting arc hole is provided around the second rotating hole on the mounting bracket, and a second sliding column that can slide along the second adjusting arc hole is also installed on the high-brightness strip light source.

[0016] Optionally, the first strip light source includes a first housing, a first lamp plate installed in the first housing, and a diffuser plate installed on the light-emitting side of the first lamp plate, wherein the diffuser plate is fixedly connected to the first housing;

[0017] The high-brightness strip light source includes a second housing, a second lamp plate installed in the second housing, and a focusing rod installed on the light-emitting side of the second lamp plate, wherein the focusing rod is fixedly connected to the second housing.

[0018] Optionally, the first strip light source is pivotally connected to the mounting frame via a first rotating shaft, and a first rotation drive device is mounted on the mounting frame, the first rotation drive device being connected to the first rotating shaft in a transmission manner.

[0019] Optionally, the surface inspection device further includes a first connecting rod, a second connecting rod, and a telescopic rod assembly; the first strip light source is pivotally connected to the mounting frame via a first rotating shaft, and the first rotating shaft is fixedly connected to the first connecting rod;

[0020] The high-brightness strip light source is pivotally connected to the mounting frame via a second rotating shaft, and the second rotating shaft is fixedly connected to the cylinder of the telescopic rod assembly;

[0021] The two ends of the second link are respectively hinged to the telescopic shaft of the telescopic rod assembly and the first link.

[0022] Optionally, the mounting bracket is further equipped with a mounting block, on which a pressure bar for pressing the second connecting rod is detachably mounted.

[0023] Optionally, the end of the pressure rod used to press the second connecting rod is fitted with an elastic sleeve, and the elastic sleeve abuts against the second connecting rod.

[0024] Optionally, the telescopic pole assembly is an electrically operated telescopic pole.

[0025] Optionally, the detection camera includes a camera body, a lens body, and a camera mounting base fixedly connected to the mounting bracket;

[0026] The lens body is mounted on the camera body, and the camera body is fixedly connected to the camera mount.

[0027] Optionally, four of each of the first bar light source and the high-brightness bar light source are provided.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The surface inspection device provided by this utility model, through a clever structural combination, allows the first strip light source to illuminate the outer side of the workpiece to be tested, the high-brightness strip light source to illuminate the top periphery rounded corner of the workpiece to be tested, and the planar coaxial light source to illuminate the groove of the workpiece; in addition, a small portion of the light from the high-brightness strip light source will illuminate the groove wall, thereby enabling the inspection camera to simultaneously inspect the top of the workpiece, the inner wall of the groove, the bottom wall of the groove, and the outer peripheral surface of the workpiece in one photograph, and the high-brightness spot of the high-brightness strip light source can better reflect whether there are surface defects on the top periphery rounded corner of the workpiece, enabling the surface inspection device to inspect the workpiece to be tested more accurately and quickly.

[0030] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a front view schematic diagram of the surface detection device provided in this embodiment of the utility model;

[0033] Figure 2 yes Figure 2 A schematic diagram of the AA cross-sectional structure of the intermediate surface detection device;

[0034] Figure 3 This is a perspective view of the surface detection device provided in an embodiment of the present invention;

[0035] Figure 4This is an exploded view of the surface detection device provided in this embodiment of the present invention;

[0036] Figure 5 This is a three-dimensional structural diagram of the mounting bracket, the first strip light source, and the high-brightness strip light source in another surface inspection device provided in this embodiment of the utility model.

[0037] Reference numerals: 1. Mounting bracket; 101. First adjustment arc-shaped hole; 102. Second adjustment arc-shaped hole; 2. First strip light source; 21. First rotating shaft; 22. First sliding column; 23. First housing; 24. First lamp panel; 25. Diffuser plate; 3. High-brightness strip light source; 31. Second rotating shaft; 32. Second sliding column; 33. Second housing; 34. Second lamp panel; 35. Focusing rod; 4. Planar coaxial light source; 5. Detection camera; 51. Camera body; 52. Lens body; 53. Camera mounting base; 61. First connecting rod; 62. Second connecting rod; 63. Telescopic rod assembly; 71. Mounting block; 72. Pressure rod; 73. Elastic sleeve. Detailed Implementation

[0038] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0039] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0040] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0041] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0042] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0043] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0044] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0045] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0046] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0047] In view of the deficiencies of existing surface inspection devices, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a device that can overcome the deficiencies of the existing technology and make the surface inspection device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value has finally been created.

[0048] Please refer to Figures 1 to 5 This utility model provides a surface inspection device for inspecting a workpiece with a groove on its top, comprising:

[0049] Mounting bracket 1 is used to support and position the first strip light source 2, the high-brightness strip light source 3, the planar coaxial light source 4, and the planar coaxial light source 4.

[0050] The first strip light source 2 is rotatably mounted on the mounting bracket 1 and is used to emit light onto the outer surface of the workpiece to be tested. The first strip light source 2 can be rotated to adjust the light emission angle so that the light shines on the outer surface of the workpiece to be tested.

[0051] The high-brightness bar light source 3 is rotatably mounted on the mounting bracket 1 and located on the top side of the first bar light source 2. It is used to emit light to the peripheral rounded corners and groove walls of the top of the workpiece to be tested. The high-brightness bar light source 3 can be rotated to adjust the light emission angle so that the light shines on the outer surface of the workpiece to be tested.

[0052] A planar coaxial light source 4 is mounted on the top side of the mounting bracket 1, and is located on the top side of the high-brightness strip light source 3, used to emit light into the groove of the workpiece to be measured; such as Figure 2 In this embodiment, the planar coaxial light source 4 emits light vertically downwards to illuminate the workpiece to be tested.

[0053] The inspection camera 5 takes pictures of the workpiece under test through the planar coaxial light source 4. The inspection camera 5 is installed on the top side of the planar coaxial light source 4.

[0054] In this embodiment, the surface inspection device, through a clever structural combination, illuminates the outer side of the workpiece by the first strip light source 2, illuminates the top periphery rounded corner of the workpiece by the high-brightness strip light source 3, and illuminates the groove of the workpiece by the planar coaxial light source 4. In addition, a small portion of the light from the high-brightness strip light source 3 will illuminate the groove wall, so that the inspection camera 5 can simultaneously inspect the top rounded corner of the workpiece, the inner wall of the groove, the bottom wall of the groove, and the outer periphery of the workpiece in one photograph. Furthermore, the high-brightness spot of the high-brightness strip light source 3 can better reflect whether there are surface defects on the top periphery rounded corner of the workpiece, enabling the surface inspection device to inspect the workpiece more accurately and quickly.

[0055] It should also be noted that, for workpieces of different heights, the tilt angle of the first strip light source 2 and the tilt angle of the high-brightness strip light source 3 can be adjusted to provide better illumination to the outer surface and top rounded corner of the workpiece, thereby further improving the applicability of the surface inspection device.

[0056] Optionally, a first rotating shaft 21 is mounted on the first strip light source 2, and a mounting bracket 1 is provided with a first rotating hole for matching the first rotating shaft 21. A first adjusting arc-shaped hole 101 is provided on the mounting bracket 1 around the first rotating hole, and a first sliding post 22 that can slide along the first adjusting arc-shaped hole 101 is also mounted on the first strip light source 2. A second rotating shaft 31 is mounted on the high-brightness strip light source 3, and a second rotating hole 31 is provided on the mounting bracket 1 for matching the second rotating shaft 31. A second adjusting arc-shaped hole 102 is provided on the mounting bracket 1 around the second rotating hole, and a second sliding post 32 that can slide along the second adjusting arc-shaped hole 102 is also mounted on the high-brightness strip light source 3. In this embodiment, the first strip light source 2 can be rotated around the first rotating shaft 21 to a suitable angle, and then locked. Similarly, the high-brightness strip light source 3 can be rotated around the second rotating shaft 31 to a suitable angle, and then locked. Preferably, the first sliding post 22 can be a screw threadedly connected to the first strip light source 2. In this case, there is no need to set other locking components to lock the first strip light source 2, and the first sliding post 22 can directly lock the first strip light source 2. Similarly, the second sliding post 32 can also be a screw.

[0057] Optionally, the first strip light source 2 includes a first housing 23, a first lamp plate 24 installed in the first housing 23, and a diffuser plate 25 installed on the light-emitting side of the first lamp plate 24, with the diffuser plate 25 fixedly connected to the first housing 23; the high-brightness strip light source 3 includes a second housing 33, a second lamp plate 34 installed in the second housing 33, and a focusing rod 35 installed on the light-emitting side of the second lamp plate 34, with the focusing rod 35 fixedly connected to the second housing 33. In this embodiment, after being focused by the focusing rod 35, the light spot formed by the high-brightness strip light source 3 is significantly brighter and more concentrated, illuminating the peripheral rounded corners of the workpiece under test, so that the surface defects in the peripheral rounded corner area are obliquely displayed in the image of the inspection camera 5.

[0058] Optionally, the first strip light source 2 is pivotally connected to the mounting frame 1 via a first rotating shaft 21, and a first rotary drive device is mounted on the mounting frame 1, the first rotary drive device being drive-connected to the first rotating shaft 21; and / or: the high-brightness strip light source 3 is pivotally connected to the mounting frame 1 via a second rotating shaft 31, and a second rotary drive device is mounted on the mounting frame 1, the second rotary drive device being drive-connected to the second rotating shaft 31. In this embodiment, both the first rotary drive device and the second rotary drive device can be motors. The first adjusting arc-shaped hole 101 also has a limiting function.

[0059] Optionally, the surface inspection device further includes a first connecting rod 61, a second connecting rod 62, and a telescopic rod assembly 63; the first strip light source 2 is pivotally connected to the mounting frame 1 via a first rotating shaft 21, and the first rotating shaft 21 is fixedly connected to the first connecting rod 61; the high-brightness strip light source 3 is pivotally connected to the mounting frame 1 via a second rotating shaft 31, and the second rotating shaft 31 is fixedly connected to the cylinder of the telescopic rod assembly 63; the two ends of the second connecting rod 62 are respectively hinged to the telescopic shaft of the telescopic rod assembly 63 and the first connecting rod 61. In this embodiment, the first connecting rod 61 can slide against the mounting frame 1.

[0060] It should be noted that when the adjuster adjusts the position of the second linkage 62, the light emission angles of the first strip light source 2 and the high-brightness strip light source 3 can be changed simultaneously, allowing the adjuster to quickly and simultaneously adjust the light emission directions of the first strip light source 2 and the high-brightness strip light source 3. The position of the second linkage 62 can be adjusted manually by the adjuster, or it can be automatically adjusted along with the rotation of the first linkage 61, etc.

[0061] It should also be noted that for workpieces of different sizes, the extension length of the telescopic shaft of the telescopic rod assembly 63 can be adjusted, and the rate of change of the light emission angle of the first strip light source 2 and the high-brightness strip light source 3 will change accordingly. Furthermore, during the rotation of the first rotating shaft 21, the light spot formed by the high-brightness strip light source 3 sweeps across a wider peripheral rounded corner, while the light spot formed by the first strip light source 2 sweeps vertically across the outer surface of the workpiece being measured. For example, when the first rotary drive device drives the first rotating shaft 21 to rotate, the light emission angles of both the high-brightness strip light source 3 and the first strip light source 2 change.

[0062] It should be further explained that the assembly structure of the first rotary drive device driving the first rotating shaft 21 to rotate, the assembly structure of the first connecting rod 61, the second connecting rod 62 and the telescopic rod assembly 63, and the assembly structure of the first adjusting arc hole 101 and the first sliding column 22 can coexist.

[0063] Optionally, a mounting block 71 is also mounted on the mounting bracket 1, and a pressure rod 72 for pressing the second connecting rod 62 is detachably mounted on the mounting block 71. Specifically, the presence of the pressure rod 72 ensures that the second connecting rod 62 remains in contact with the mounting bracket 1. It should be noted that if there is a large gap between the second connecting rod 62 and the mounting bracket 1, it will affect the stability of the second connecting rod 62, as well as the rotation angle of the first strip light source 2 and the high-brightness strip light source 3.

[0064] Optionally, the end of the pressure rod 72 used to press the second connecting rod 62 is fitted with an elastic sleeve 73, the elastic sleeve 73 abuts against the second connecting rod 62, so as to ensure that the elastic sleeve 73 abuts against the second connecting rod 62 and the second connecting rod 62 fits against the mounting bracket 1.

[0065] Optionally, the telescopic rod assembly 63 is an electrically operated telescopic rod, capable of electrically adjusting the extension length of the telescopic shaft.

[0066] Optionally, the detection camera 5 includes a camera body 51, a lens body 52, and a camera mounting base 53 fixedly connected to the mounting bracket 1; the lens body 52 is mounted on the camera body 51, and the camera body 51 is fixedly connected to the camera mounting base 53.

[0067] Optionally, four of each of the first bar light source 2 and the high-brightness bar light source 3 are provided.

[0068] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A surface inspection device, characterized in that, For detecting workpieces with a groove on the top, including: Mounting bracket (1); The first strip light source (2) is rotatably mounted on the mounting bracket (1) and is used to emit light onto the outer surface of the workpiece to be tested; A high-brightness strip light source (3) is rotatably mounted on the mounting bracket (1) and located on the top side of the first strip light source (2) to emit light to the peripheral rounded corners and groove walls of the top of the workpiece to be tested; A planar coaxial light source (4) is installed on the top side of the mounting bracket (1), and the planar coaxial light source (4) is located on the top side of the high-brightness strip light source (3) for emitting light into the groove of the workpiece to be tested; The inspection camera (5) is used to take pictures of the workpiece to be tested. The inspection camera (5) is installed on the top side of the planar coaxial light source (4).

2. The surface detection device according to claim 1, characterized in that, The first strip light source (2) is equipped with a first rotating shaft (21), the mounting bracket (1) is provided with a first rotating hole for matching the first rotating shaft (21), and the mounting bracket (1) is provided with a first adjusting arc hole (101) around the first rotating hole. The first strip light source (2) is also equipped with a first sliding column (22) that can slide along the first adjusting arc hole (101). The high-brightness strip light source (3) is equipped with a second rotating shaft (31), the mounting bracket (1) is provided with a second rotating hole for matching the second rotating shaft (31), and the mounting bracket (1) is provided with a second adjusting arc hole (102) around the second rotating hole. The high-brightness strip light source (3) is also equipped with a second sliding column (32) that can slide along the second adjusting arc hole (102).

3. The surface detection device according to claim 1, characterized in that, The first strip light source (2) includes a first housing (23), a first lamp plate (24) installed in the first housing (23), and a diffuser plate (25) installed on the light-emitting side of the first lamp plate (24). The diffuser plate (25) is fixedly connected to the first housing (23). The high-brightness strip light source (3) includes a second housing (33), a second lamp plate (34) installed in the second housing (33), and a focusing rod (35) installed on the light-emitting side of the second lamp plate (34). The focusing rod (35) is fixedly connected to the second housing (33).

4. The surface detection device according to claim 1, characterized in that, The first strip light source (2) is pivotally connected to the mounting frame (1) via the first rotating shaft (21), and the mounting frame (1) is equipped with a first rotation drive device, which is connected to the first rotating shaft (21) in a transmission manner.

5. The surface detection device according to claim 1, characterized in that, It also includes a first link (61), a second link (62), and a telescopic rod assembly (63); The first strip light source (2) is pivotally connected to the mounting bracket (1) via a first rotating shaft (21), and the first rotating shaft (21) is fixedly connected to the first connecting rod (61); The high-brightness strip light source (3) is pivotally connected to the mounting frame (1) via a second rotating shaft (31), and the second rotating shaft (31) is fixedly connected to the cylinder of the telescopic rod assembly (63); The two ends of the second link (62) are respectively hinged to the telescopic shaft of the telescopic rod assembly (63) and the first link (61).

6. The surface inspection device according to claim 5, characterized in that, The mounting bracket (1) is also equipped with a mounting block (71), and a pressure rod (72) for pressing the second connecting rod (62) is detachably mounted on the mounting block (71).

7. The surface detection device according to claim 6, characterized in that, The end of the pressure rod (72) used to press the second connecting rod (62) is fitted with an elastic sleeve (73), and the elastic sleeve (73) abuts against the second connecting rod (62).

8. The surface inspection device according to claim 5, characterized in that, The telescopic pole assembly (63) is an electric telescopic pole.

9. The surface detection device according to claim 1, characterized in that, The detection camera (5) includes a camera body (51), a lens body (52), and a camera mounting base (53) fixedly connected to the mounting bracket (1); The lens body (52) is mounted on the camera body (51), and the camera body (51) is fixedly connected to the camera mount (53).

10. The surface detection device according to claim 1, characterized in that, There are four of each of the first strip light source (2) and the high-brightness strip light source (3).

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