Visual inspection device and workpiece inspection line

Abstract

The utility model relates to machine vision detection technical field discloses a kind of visual inspection device and workpiece detection line, including first camera assembly, second camera assembly and light splitting component;Light splitting component includes first installation shell, second installation shell, light splitting lens and reflecting lens;Light splitting lens is installed in first installation shell, reflecting lens is installed in second installation shell, first installation shell and second installation shell are detachably connected, first camera assembly is fixedly connected with first installation shell, and second camera assembly is fixedly connected with second installation shell;First installation shell has for the light inlet to workpiece, the light of light inlet is divided into first light beam and second light beam by light splitting lens, first light beam passes through light splitting lens and is directed to first camera assembly, second light beam is reflected by light splitting lens and is directed to reflecting lens and is reflected by reflecting lens and is injected into second camera assembly.The utility model discloses visual inspection device and workpiece detection line, easy to assemble, and can better detect workpiece.

Description

Technical Field

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

[0002] With the development of technology, machine vision inspection technology has been widely used in industrial production. Machine vision can perform a comprehensive inspection of the appearance of workpieces, including scratches, burrs, defects, dirt, and cracks, etc.

[0003] Current machine vision inspection systems can generally only obtain image information within a set magnification range after taking pictures of the workpiece. This magnification range is determined by the structure of the corresponding camera component. High-magnification image information and low-magnification image information conflict with each other. That is, if the camera component wants to obtain high-magnification image information, it cannot obtain low-magnification image information, which affects the range of machine vision inspection. If multiple camera components are set up, there will be problems such as complicated installation and difficulty in positioning adjacent cameras.

[0004] Therefore, it is necessary to design a vision inspection device and workpiece inspection line that is easy to assemble and can better inspect workpieces.

[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 visual inspection device and a workpiece inspection line, which are easy to assemble and can better inspect workpieces.

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

[0008] A visual inspection device includes a first camera assembly, a second camera assembly, and a beam splitter assembly;

[0009] The beam splitting assembly includes a first mounting housing, a second mounting housing, a beam splitting lens, and a reflecting lens; the beam splitting lens is installed in the first mounting housing, the reflecting lens is installed in the second mounting housing, the first mounting housing and the second mounting housing are detachably connected, the first camera assembly is fixedly connected to the first mounting housing, and the second camera assembly is fixedly connected to the second mounting housing;

[0010] The first mounting housing has a light inlet for facing the workpiece. The light from the light inlet is split into a first beam and a second beam by the beam splitter. The first beam passes through the beam splitter and is directed toward the first camera assembly. The second beam is reflected by the beam splitter and is directed toward the reflector and then reflected by the reflector into the second camera assembly.

[0011] Optionally, the first mounting shell has a first cylindrical portion, the second mounting shell has a second cylindrical portion, and the first cylindrical portion is rotatably fitted onto the second cylindrical portion;

[0012] The first cylindrical portion has a fixing hole into which a fastener can be screwed to fix the second cylindrical portion.

[0013] Optionally, a ring light source for illuminating the workpiece is fixedly connected to one side of the bottom of the first mounting housing, and the center line of the ring light source coincides with the center of the first camera assembly.

[0014] Optionally, the first camera assembly includes a first camera and a first lens, the second camera assembly includes a second camera and a second lens, and the magnification of the first camera assembly is different from that of the second camera assembly.

[0015] Optionally, the reflecting mirror is triangular in shape and has an inclined reflecting surface, which is parallel to the beam splitter.

[0016] The second mounting housing has a positioning cavity for accommodating the reflective lens.

[0017] Optionally, the first mounting shell includes a top plate, a bottom plate, and four side plates, which are connected end to end in sequence to form a connecting frame. The top plate, the bottom plate, and the connecting frame form a receiving cavity for accommodating the beam splitter.

[0018] Both of the opposite side plates are provided with oblique slots for securing the beam splitter.

[0019] Optionally, the top plate is provided with a first threaded connection for detachable connection with the first camera assembly.

[0020] Optionally, the base plate is provided with a second threaded connection for connecting the annular light source.

[0021] Optionally, the annular light source further includes a perimeter, an annular light panel, an annular diffuser plate, and a top connecting plate;

[0022] The top of the perimeter is fixedly connected to the top plate. Both the annular lamp plate and the annular diffuser plate are installed in the perimeter, and the annular diffuser plate is installed on the light-emitting side of the annular lamp plate.

[0023] A workpiece inspection line includes a vision inspection device as described in any of the preceding claims.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The visual inspection device and workpiece inspection line provided by this utility model include a beam-splitting component comprising a first mounting shell and a second mounting shell, which are detachably connected. Therefore, the first camera assembly and the first mounting shell can be assembled first, followed by the assembly of the second mounting shell and the second camera assembly, and finally the first and second mounting shells can be connected. This allows light entering from the light inlet to be split into a first beam and a second beam. The first beam passes through a beam-splitting lens and enters the first camera assembly, while the second beam passes through a reflecting lens and enters the second camera assembly. In this embodiment, the first and second camera assemblies can acquire image information of the workpiece at different magnifications to achieve better inspection results. Furthermore, the detachable connection between the first and second mounting shells facilitates the assembly of both the first and second camera assemblies, reducing the possibility of the second camera assembly colliding with the first camera assembly during assembly and lowering the assembly difficulty.

[0026] 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

[0027] 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.

[0028] Figure 1 This is a front view schematic diagram of the visual inspection device provided in this embodiment of the utility model;

[0029] Figure 2 This is a top view schematic diagram of the visual inspection device provided in this embodiment of the utility model;

[0030] Figure 3 This is a cross-sectional structural schematic diagram of the visual inspection device provided in this embodiment of the utility model;

[0031] Figure 4 This is a three-dimensional structural schematic diagram of the visual inspection device provided in this embodiment of the utility model;

[0032] Figure 5 This is an exploded view of the visual inspection device provided in this embodiment of the present invention.

[0033] Reference numerals: 1. First camera assembly; 11. First camera; 12. First lens; 21. Second camera; 22. Second lens; 2. Second camera assembly; 3. Beam splitter assembly; 3001. First threaded connection; 3002. Second threaded connection; 301. Top plate; 302. Side plate; 303. Bottom plate; 31. First mounting shell; 311. First cylindrical part; 312. Second cylindrical part; 313. Fixing hole; 32. Second mounting shell; 33. Beam splitter lens; 34. Reflecting lens; 4. Ring light source; 41. Periphery; 42. Ring light panel; 43. Ring diffuser plate; 44. Top connecting plate. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Example 1

[0044] In view of the aforementioned deficiencies in existing visual inspection devices, the applicant, based on years of extensive 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 shortcomings of the existing technology and make the visual 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.

[0045] Please refer to Figures 1 to 5 This utility model provides a visual inspection device, including a first camera assembly 1, a second camera assembly 2, and a beam splitter assembly 3.

[0046] The beam splitter assembly 3 includes a first mounting housing 31, a second mounting housing 32, a beam splitter lens 33, and a reflector lens 34. The first mounting housing 31 is used to support the first camera assembly 1, and the second mounting housing 32 is used to support the second camera assembly 2. The beam splitter lens 33 is installed in the first mounting housing 31, and the reflector lens 34 is installed in the second mounting housing 32. The first mounting housing 31 and the second mounting housing 32 are detachably connected. The first camera assembly 1 is fixedly connected to the first mounting housing 31, and the second camera assembly 2 is fixedly connected to the second mounting housing 32.

[0047] The first mounting housing 31 has a light inlet facing the workpiece. The light from the light inlet is split into a first beam and a second beam by a beam splitter 33. The first beam passes through the beam splitter 33 and is directed toward the first camera assembly 1. The second beam is reflected by the beam splitter 33 and directed toward a reflecting lens 34 and then reflected by the reflecting lens 34 into the second camera assembly 2.

[0048] In this embodiment, the visual detection device includes a beam splitting component 3 comprising a first mounting shell 31 and a second mounting shell 32, which are detachably connected. Therefore, the first camera assembly 1 and the first mounting shell 31 can be assembled first to fix the first camera assembly 1 and the first mounting shell 31 together, and then the second mounting shell 32 and the second camera assembly 2 can be assembled to fix the second mounting shell 32 and the second camera assembly 2 together. Finally, the first mounting shell 31 and the second mounting shell 32 are connected so that the light entering from the light inlet can be split into a first beam and a second beam. The first beam enters the first camera assembly 1 through a beam splitter, and the second beam enters the second camera assembly 2 through a reflector.

[0049] In this embodiment, the first camera assembly 1 includes a first camera 11 and a first lens 12, and the second camera assembly 2 includes a second camera 21 and a second lens 22. The magnification of the first camera assembly 1 and the second camera assembly 2 are different. The first camera assembly 1 and the second camera assembly 2 can acquire image information of the workpiece at different magnifications to achieve better detection results. Furthermore, the detachable connection between the first mounting shell 31 and the second mounting shell 32 makes it easier to assemble the first camera assembly 1 and the second camera assembly 2, reducing the possibility of the second camera assembly 2 colliding with the first camera assembly 1 during assembly and lowering the assembly difficulty.

[0050] It should also be noted that the first mounting shell 31 and the second mounting shell 32 can be connected by detachable methods such as threaded connection or rotary snap-fit, which will not be elaborated here.

[0051] Preferably, during actual installation, the first mounting shell 31 has a first cylindrical portion 311, the second mounting shell 32 has a second cylindrical portion 312, and the first cylindrical portion 311 is rotatably fitted onto the second cylindrical portion 312. The first cylindrical portion 311 is provided with a fixing hole 313 for fasteners to be screwed into to fix the second cylindrical portion 312.

[0052] When the first camera assembly 1 and the first mounting housing 31 are fixedly connected, and the second mounting housing 32 and the second camera assembly 2 are fixedly connected, the first cylindrical portion 311 can be rotatably fitted onto the second cylindrical portion 312, so that the center lines of the first camera assembly 1 and the second camera assembly 2 are perpendicular to each other. Then, the second cylindrical portion 312 is rotated relative to the first cylindrical portion 311 to keep the relative positions of the first camera assembly 1 and the second camera assembly 2 correct. Finally, fasteners are screwed into the fixing holes 313 on the first cylindrical portion 311 to fix the first cylindrical portion 311 and the second cylindrical portion 312 to each other. Generally, at least two fixing holes 313 can be provided, and three, four or even more fixing holes 313 can also be provided.

[0053] In this embodiment, during installation, it is not necessary to maintain the relative positions of the first camera assembly 1 and the second camera assembly 2 from the beginning. The screw-on structure between the first mounting shell 31 and the second mounting shell 32 can effectively reduce the possibility of collision between the first camera assembly 1 and the second camera assembly 2 during installation.

[0054] Optionally, a ring light source 4 for illuminating the workpiece is fixedly connected to one side of the bottom of the first mounting housing 31, and the center line of the ring light source 4 coincides with the center of the first camera assembly 1. The ring light source 4 can better illuminate the workpiece.

[0055] Optionally, the reflecting lens 34 is triangular prism-shaped and has an inclined reflecting surface parallel to the beam splitter 33; the second mounting housing 32 has a positioning cavity for accommodating the reflecting lens 34. In this embodiment, the second mounting housing 32 positions the reflecting lens 34 through the contoured positioning cavity, which can effectively improve the positioning accuracy.

[0056] Optionally, the first mounting housing 31 includes a top plate 301, a bottom plate 303, and four side plates 302. The four side plates 302 are connected end-to-end to form a connecting frame. The top plate 301, the bottom plate 303, and the connecting frame form a receiving cavity for accommodating the beam splitter 33. Each of the two opposite side plates 302 has an oblique slot for clamping the beam splitter 33. The opposite ends of the beam splitter 33 are respectively inserted into an oblique slot, thereby positioning the beam splitter 33.

[0057] Optionally, the top plate 301 is provided with a first threaded connection portion 3001 for detachable connection with the first camera assembly 1. The first threaded connection portion 3001 has a light-transmitting hole through which light can pass, and the outer wall of the first threaded connection portion 3001 is provided with connecting threads.

[0058] Optionally, the base plate 303 is provided with a second threaded connection portion 3002 for connecting the ring light source 4.

[0059] Optionally, the ring light source 4 also includes a perimeter 41, a ring light plate 42, a ring diffuser plate 43, and a top connecting plate 44; the top of the perimeter 41 is fixedly connected to the top plate 301, the ring light plate 42 and the ring diffuser plate 43 are both installed in the perimeter 41, and the ring diffuser plate 43 is installed on the light-emitting side of the ring light plate 42.

[0060] Example 2

[0061] A workpiece inspection line includes the visual inspection device described in Embodiment 1.

[0062] 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 visual inspection device, characterized in that, It includes a first camera assembly (1), a second camera assembly (2), and a beam splitter assembly (3); The beam splitter assembly (3) includes a first mounting housing (31), a second mounting housing (32), a beam splitter lens (33), and a reflector lens (34); the beam splitter lens (33) is mounted in the first mounting housing (31), the reflector lens (34) is mounted in the second mounting housing (32), the first mounting housing (31) and the second mounting housing (32) are detachably connected, the first camera assembly (1) is fixedly connected to the first mounting housing (31), and the second camera assembly (2) is fixedly connected to the second mounting housing (32); The first mounting housing (31) has a light inlet facing the workpiece. The light from the light inlet is split into a first beam and a second beam by the beam splitter (33). The first beam passes through the beam splitter (33) and is directed toward the first camera assembly (1). The second beam is reflected by the beam splitter (33) and directed toward the reflector (34), and then reflected by the reflector (34) into the second camera assembly (2).

2. The visual inspection device according to claim 1, characterized in that, The first mounting shell (31) has a first cylindrical portion (311), the second mounting shell (32) has a second cylindrical portion (312), and the first cylindrical portion (311) is rotatably mounted on the second cylindrical portion (312); The first cylindrical part (311) has a fixing hole (313) for fasteners to be screwed in to fix the second cylindrical part (312).

3. The visual inspection device according to claim 1, characterized in that, A ring light source (4) for illuminating the workpiece is fixedly connected to one side of the bottom of the first mounting housing (31), and the center line of the ring light source (4) coincides with the center of the first camera assembly (1).

4. The visual inspection device according to claim 1, characterized in that, The first camera assembly (1) includes a first camera (11) and a first lens (12), and the second camera assembly (2) includes a second camera (21) and a second lens (22). The magnification of the first camera assembly (1) is different from that of the second camera assembly (2).

5. The visual inspection device according to claim 1, characterized in that, The reflective lens (34) is triangular in shape and has an inclined reflective surface, which is parallel to the beam splitter (33). The second mounting housing (32) has a positioning cavity for accommodating the reflective lens (34).

6. The visual inspection device according to claim 3, characterized in that, The first mounting shell (31) includes a top plate (301), a bottom plate (303) and four side plates (302). The four side plates (302) are connected end to end in sequence to form a connecting frame. The top plate (301), the bottom plate (303) and the connecting frame form a receiving cavity for accommodating the beam splitter (33). Both of the opposite side plates (302) are provided with oblique slots for securing the beam splitter (33).

7. The visual inspection device according to claim 6, characterized in that, The top plate (301) is provided with a first threaded connection (3001) for detachable connection with the first camera assembly (1).

8. The visual inspection device according to claim 6, characterized in that, The base plate (303) is provided with a second threaded connection part (3002) for connecting the ring light source (4).

9. The visual inspection device according to claim 8, characterized in that, The ring light source (4) also includes a perimeter (41), a ring light panel (42), a ring diffuser (43), and a top connecting plate (44); The top of the perimeter (41) is fixedly connected to the top plate (301). The annular lamp plate (42) and the annular diffuser plate (43) are both installed in the perimeter (41), and the annular diffuser plate (43) is installed on the light-emitting side of the annular lamp plate (42).

10. A workpiece inspection line, characterized in that, It includes the visual inspection device as described in any one of claims 1 to 9.

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