Compact detection device

Abstract

The utility model relates to the technical field of visual inspection, and discloses a compact detection device which is used for detecting a workpiece from one side of the bottom and comprises a shell, a camera and a planar coaxial light source, the shell is provided with a V-shaped light through hole, and a total reflection surface is arranged at the bent part of the light through hole; the camera is inserted into one end of the light through hole, and the planar coaxial light source is mounted at the other end of the light through hole; the plane coaxial light source inclines upwards to emit light to irradiate the surface of a workpiece, light reflected by the workpiece penetrates through the plane coaxial light source to be emitted into the light through hole, and the light is reflected by the fully reflecting face to be emitted to the camera. The compact detection device provided by the utility model can be installed in a small space to detect one side of the bottom of a workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to visual inspection technical field especially relates to a compact detection device. BACKGROUND

[0002] Machine vision detection technology refers to the image extraction device, for example camera, replaces the human eye and judges a detection technology of measurement, has inestimable value in the aspect of detecting defects, has been widely applied in each industry. In the machine vision detection process, the influence of detection light source to detection result is very important, and detection light source is point light source, strip light source, ring light source, tunnel light source and the like.

[0003] The overall volume of the existing light source and detection camera is large, so it is difficult to install on the bottom side of the workpiece to detect the surface of the workpiece, and it is difficult to meet the needs of actual use.

[0004] Therefore, it is necessary to design a compact detection device that can be installed in a small space to detect the bottom side of the workpiece.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or acknowledge whether any of the above content can be used as prior art with respect to the present disclosure. INVENTION CONTENTS

[0006] The utility model provides compact detection device, can install in small space to the bottom side of workpiece is detected.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] A compact detection device for detecting workpieces from the bottom side, comprising a housing, a camera and a planar coaxial light source;

[0009] The housing has a V-shaped light passage hole, and a total reflection surface is arranged at the bending part of the light passage hole;

[0010] The camera is inserted into one end of the light passage hole, and the planar coaxial light source is installed at the other end of the light passage hole; the planar coaxial light source is inclined upward to emit light on the surface of the workpiece, and the reflected light of the workpiece passes through the planar coaxial light source and enters the light passage hole, and the light is reflected by the total reflection surface and shot to the camera.

[0011] Optionally, the planar coaxial light source comprises a transparent plate, a ring light source arranged on the outer periphery of the transparent plate and a light reflection layer arranged on the top surface of the transparent plate, and the light reflection layer is composed of a plurality of arc convex points.

[0012] The arc-shaped convex points reflect the light rays of the annular light source entering the transparent plate, so that the light rays are downwardly projected on the surface of the workpiece.

[0013] Optionally, the total reflection surface is opposite to the planar coaxial light source, the total reflection surface is parallel to the planar coaxial light source, and the angle between the center line of the lens of the camera and the total reflection surface is 45 degrees.

[0014] Optionally, the shell has a first side and a second side which are perpendicular to each other.

[0015] The first side is parallel to a horizontal plane, and the second side is supported on a wall.

[0016] Optionally, the camera is detachably inserted into an end aperture of the light transmission hole.

[0017] Optionally, the total reflection surface is a plane.

[0018] Optionally, the total reflection surface is a convex surface.

[0019] Optionally, the light transmission hole comprises a vertical through hole and an inclined through hole which communicates with the vertical through hole.

[0020] The vertical through hole and the inclined through hole are in end communication to form a V-shaped structure.

[0021] Compared with the prior art, the compact detection device has the following beneficial effects:

[0022] The compact detection device provided by the utility model has the advantages that the V-shaped light transmission hole is arranged in the shell, the camera is inserted into one end of the light transmission hole, the planar coaxial light source can provide detection light, and the camera can take a photo of the workpiece illuminated by the planar coaxial light source through the total reflection surface.

[0023] The utility model has other characteristics and advantages, which will be obvious from the drawings and subsequent specific embodiments incorporated herein or will be described in detail in the drawings and subsequent specific embodiments incorporated herein, which are used together to explain the specific principles of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0025] Figure 1 is a cross-sectional structure schematic view of a compact detection device provided by an embodiment of the present application;

[0026] Figure 2 is a cross-sectional schematic view of another compact detection device provided by an embodiment of the present application.

[0027] Reference signs: 1, shell; 101, first side; 102, second side; 11, light hole; 111, vertical through hole; 112, inclined through hole; 12, total reflection surface; 2, camera; 3, planar coaxial light source; 31, transparent plate; 32, ring light source. DETAILED DESCRIPTION

[0028] In order to describe possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects that can be achieved, etc. of the present application in detail, the following will be described in detail in combination with specific embodiments listed and with reference to the drawings. The embodiments described in the present document are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0029] In this document, the term "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, each technical feature mentioned in each embodiment can be combined in any way to form a corresponding implementable technical scheme.

[0030] Unless otherwise defined, the meanings of the technical terms used in the present document are the same as those commonly understood by those skilled in the art to which the present application belongs; the use of related terms in the present document is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0031] In the description of the present application, the phrase "and / or" is a description of the logical relationship between the objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in the present document generally represents that the associated objects before and after are a "or" logical relationship.

[0032] In the present application, such as "first" and "second", the phrases are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary and secondary or order relationship between the entities or operations.

[0033] In the present application, the terms "comprise", "contain", "include", or other similar phrases used in the statements mean to encompass the non-exclusive inclusion, and the terms do not exclude the presence of additional elements in the process, method or product comprising the stated elements, so that the process, method or product comprising a series of elements can not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0034] In the present application, the terms "greater than", "less than", "exceed" and the like are understood as not including the number itself; the terms "above", "below", "within" and the like are understood as including the number itself. In addition, in the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, for example, "multiple groups", "multiple times" and the like, unless otherwise explicitly specified.

[0035] In the description of the embodiments of the present application, the spatial-related terms used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or the drawings, and are only for the convenience of describing the specific embodiments of the present application or for the reader to understand, and do not indicate or imply that the indicated device or component must have a particular position, a particular orientation, or be constructed or operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0036] Unless otherwise explicitly specified or limited, in the description of the embodiments of the present application, the terms "mount", "connect", "connect", "fix", "set", and the like should be understood in a broad sense. For example, the "connection" can be a fixed connection, or a detachable connection, or an integral setting; it can be a mechanical connection, or an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which the present application belongs, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In view of defects in the prior art detection device, the applicant, based on many years of rich practical experience and professional knowledge in designing and manufacturing such products, actively researched and innovated, hoping to create a technology that can solve the defects in the prior art, making the compact detection device more practical. After continuous research, design, and repeated trial samples and improvement, the present utility model is finally created.

[0038] Please refer to Figure 1 The utility model discloses a compact detection device for detecting workpieces from the bottom side, comprising a shell 1, a camera 2 and a plane coaxial light source 3.

[0039] The shell 1 has a V-shaped light hole 11, and a total reflection surface 12 is arranged at the bending part of the light hole 11; the camera 2 is inserted into one end of the light hole 11, and the plane coaxial light source 3 is installed at the other end of the light hole 11; the plane coaxial light source 3 is inclined upward to emit light on the surface of the workpiece, and the reflected light of the workpiece passes through the plane coaxial light source 3 and enters the light hole 11, and the light is reflected by the total reflection surface 12 and shot to the camera 2.

[0040] In this embodiment, by skillfully setting the structure of the shell 1 and arranging the total reflection surface 12 in the V-shaped light hole 11, the camera 2 can shoot the bottom surface image of the workpiece through the total reflection surface 12, so as to detect the defects of the workpiece and judge whether the workpiece is qualified.

[0041] It should be further pointed out that the plane coaxial light source 3 in this embodiment can allow the reflected light of the workpiece to pass through, so that the camera 2 can take the reflected light after being reflected by the total reflection surface 12, thereby detecting the bottom surface of the workpiece.

[0042] Optionally, the plane coaxial light source 3 comprises a transparent plate 31, an annular light source 32 arranged on the outer periphery of the transparent plate 31, and a light reflection layer arranged on the top surface of the transparent plate 31, the light reflection layer is composed of a plurality of arc convex points; the arc convex points reflect the light of the annular light source 32 entering the transparent plate 31, so that the light is shot downward on the surface of the workpiece.

[0043] Specifically, the arc convex points occupy a small area relative to the top surface of the transparent plate 31, which can effectively allow the reflected light of the workpiece to pass through. The transparent plate 31 can be a glass plate or a flat plate made of other transparent materials.

[0044] Optionally, the total reflection surface 12 is opposite to the plane coaxial light source 3, the total reflection surface 12 is parallel to the plane coaxial light source 3, and the angle between the center line of the lens of the camera 2 and the total reflection surface 12 is 45°. The total reflection surface 12 is parallel to the plane coaxial light source 3, so that the total reflection surface 12 can better reflect the light, and the imaging effect of the camera 2 is improved.

[0045] Optionally, the housing 1 has a first side 101 and a second side 102 perpendicular to each other; the first side 101 is parallel to the horizontal plane, and the second side 102 is in contact with the wall. In the actual installation process, the first side 101 needs to be parallel to the horizontal plane, and the second side 102 is the side in contact with the wall, so that the housing 1 is more stably fixed on the wall.

[0046] Optionally, the camera 2 is detachably inserted into the end aperture of the light passage hole 11. As shown in the figure, the camera 2 is vertically arranged, and the lens part is inserted into the light passage hole 11, and the camera is easy to disassemble and replace. Figure 1

[0047] Optionally, the total reflection surface 12 is a plane.

[0048] In another specific embodiment, please refer to Figure 2 the total reflection surface 12 is a convex surface. The convex total reflection surface 12 can collect images of a larger area of the workpiece, which has obvious advantages in detecting larger volume workpieces.

[0049] Optionally, the light passage hole 11 includes a vertical through hole 111 and an inclined through hole 112 connected with the vertical through hole 111; the vertical through hole 111 and the inclined through hole 112 are connected at the ends to form a V-shaped structure.

[0050] Finally, it needs to be pointed out that although the above-mentioned embodiments have been described in the specification and drawings of the present application, it cannot limit the patent protection scope of the present application. Any equivalent structure or equivalent flow replacement or modification based on the essential concept of the present application, using the content described in the specification and drawings, and directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, etc., are all included in the patent protection scope of the present application.​

Claims

1. A compact detection device, characterized in that, A device for detecting workpiece from bottom side, comprising a housing (1), a camera (2) and a planar coaxial light source (3); The housing (1) has a V-shaped light hole (11), and a total reflection surface (12) is arranged at the bending part of the light hole (11); The camera (2) is inserted into one end of the light hole (11), and the planar coaxial light source (3) is installed at the other end of the light hole (11); the planar coaxial light source (3) is inclined upward to irradiate the workpiece surface, and the reflected light of the workpiece passes through the planar coaxial light source (3) and enters the light hole (11), and the light is reflected by the total reflection surface (12) and irradiates the camera (2).

2. The compact detection device of claim 1, wherein, The planar coaxial light source (3) comprises a transparent plate (31), a ring-shaped light source (32) arranged at the outer periphery of the transparent plate (31), and a light reflection layer arranged on the top surface of the transparent plate (31), wherein the light reflection layer is composed of a plurality of arc-shaped convex points; The arc-shaped convex points reflect the light of the ring-shaped light source (32) entering the transparent plate (31), so that the light is downwardly irradiated on the surface of the workpiece.

3. The compact detection device of claim 1, wherein, The total reflection surface (12) is opposite to the planar coaxial light source (3), the total reflection surface (12) is parallel to the planar coaxial light source (3), and the center line of the lens of the camera (2) and the total reflection surface (12) form an angle of 45°.

4. The compact detection device of claim 1, wherein, The housing (1) has a first side (101) and a second side (102) perpendicular to each other; The first side (101) is parallel to the horizontal plane, and the second side (102) is supported on the wall.

5. The compact detection device of claim 1, wherein, The camera (2) can be detachably inserted into one end of the light hole (11).

6. The compact detection device of claim 1, wherein, The total reflection surface (12) is a plane.

7. The compact detection device of claim 1, wherein, The total reflection surface (12) is a convex surface.

8. The compact detection device of claim 1, wherein, The light hole (11) comprises a vertical through hole (111) and an inclined through hole (112) communicating with the vertical through hole (111); The vertical through hole (111) and the inclined through hole (112) are communicated at the end to form a V-shaped structure.

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