Combined light source and visual inspection device

Abstract

The utility model relates to the technical field of light source structures, and discloses a combined light source and a visual inspection device, which comprise an annular fixing plate with an inspection through hole; the at least three supporting plate groups are arranged on one side of the bottom of the annular fixing plate, and all the supporting plate groups are arranged around the circumference of the detection through hole in an array mode; and each supporting plate set is rotatably provided with one arc-shaped linear light source, the arc-shaped linear light sources emit light downwards in an inclined mode so that arc-shaped linear light spots can be formed on the surface of a workpiece, and the light emitting angle of the arc-shaped linear light sources can be adjusted. The combined light source and the visual detection device can meet the detection requirements of dents on the surfaces of different workpieces.

Description

TECHNICAL FIELD

[0001] The utility model relates to light source structure technical field especially relates to a combination light source and visual inspection device. BACKGROUND

[0002] Light source refers to the lighting element in the machine vision detection scene, and the main function is to illuminate the workpiece and highlight the surface defect features of the workpiece. The conventional light source includes a variety of types such as a ring light source and a linear light source. It can be understood that different light sources have different advantages.

[0003] At present, when the indentation on the surface of the workpiece is detected, since the extension direction of the indentation on the surface of the workpiece is various, it is usually necessary to configure multiple sets of linear light sources to more completely detect the indentation defects. On the actual detection production line, two sets of linear light sources with different installation angles are generally configured to detect the indentation of different extension directions on the surface of the workpiece. However, the light emitting angle of the above linear light source is not adjustable, which leads to a narrow detection range.

[0004] Therefore, it is necessary to design a combination light source and visual inspection device to better detect the surface indentation on different workpieces.

[0005] The above information is given as background information only to assist with an understanding of the present disclosure, and does not constitute admission or recognition that any of the above information constitutes prior art with respect to the present disclosure. UTILITY MODEL CONTENT

[0006] The utility model provides a combination light source and visual inspection device to better detect the surface indentation on different workpieces.

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

[0008] A combination light source comprises:

[0009] A ring-shaped fixed plate has a detection through hole;

[0010] At least three groups of support plate groups are arranged on one side of the bottom of the ring-shaped fixed plate, and all the support plate groups are arranged in a circumferential array around the detection through hole.

[0011] An arc-shaped linear light source is rotatably installed on each group of support plate groups, the arc-shaped linear light source emits light downwardly and obliquely to form an arc-shaped linear light spot on the surface of the workpiece, and the light emitting angle of the arc-shaped linear light source is adjustable.

[0012] Optionally, the support plate group comprises a first support plate and a second support plate which are arranged obliquely; the farther away from the ring-shaped fixed plate, the greater the distance between the first support plate and the second support plate.

[0013] Both ends of the arc linear light source are rotatably connected with the first support plate and the second support plate through rotating shafts.

[0014] Optionally, the rotating shafts are damping shafts.

[0015] Optionally, the first support plate and the second support plate are both provided with arc-shaped grooves arranged around the rotating shafts, and the arc linear light source is provided with limiting columns inserted into the arc-shaped grooves.

[0016] Optionally, line light spots projected on the workpiece surface by two adjacent arc linear light sources intersect with each other.

[0017] Optionally, the arc linear light source comprises an arc-shaped shell, an arc-shaped light collecting rod and an arc-shaped light plate.

[0018] The arc-shaped shell has an arc-shaped groove, the arc-shaped light plate is installed in the arc-shaped groove, and the arc-shaped light collecting rod is installed at the groove opening of the arc-shaped groove and clamped by the two side groove walls of the arc-shaped groove.

[0019] Optionally, the arc linear light source further comprises a sealing plate used for sealing the end of the arc-shaped groove, the sealing plate is detachably connected with the end of the arc-shaped shell, and the sealing plate is provided with a rotating hole for inserting the rotating shaft and a positioning mounting hole for inserting the limiting column.

[0020] Optionally, the limiting column is detachably inserted into the positioning mounting hole, and the limiting column protrudes from the sealing plate.

[0021] Optionally, the arc-shaped light collecting rod has a circular cross section.

[0022] Optionally, the first support plate and the second support plate are both elastic plates, and the first support plate and the second support plate elastically clamp the two ends of the arc linear light source.

[0023] A visual detection device comprises the combined light source according to any one of the above and a detection camera mounted on one side of the top of the annular fixing plate.

[0024] The lens of the detection camera is directly opposite the detection through hole.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The combined light source and the visual detection device provided by the utility model have the characteristics and advantages that the light emitting angle of different arc linear light sources can be adjusted, the arc linear light sources can be inclined to different light emitting angles according to the detection requirements of different workpieces, the detection requirements of different workpiece surface dents can be better met, the workpiece surface dents can be more accurately detected, and the detection application range is effectively improved.

[0027] 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

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used 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 also obtain other drawings according to these drawings without creating creative labor.

[0029] Figure 1 It is the mounting structure schematic view of the combined light source provided by the utility model embodiment;

[0030] Figure 2 It is the overhead schematic view of the combined light source provided by the utility model embodiment;

[0031] Figure 3 It is Figure 2 The A-A cross section structure schematic view of the combined light source in;

[0032] Figure 4 It is the explosion structure schematic view of the arc linear light source provided by the utility model embodiment;

[0033] Figure 5 It is the three-dimensional schematic view of the arc linear light source provided by the utility model embodiment;

[0034] Figure 6 It is the three-dimensional structure schematic view of the arc linear light source when hiding one end sealing plate provided by the utility model embodiment.

[0035] Reference: 1, annular fixing plate; 101, detection through hole; 2, support plate group; 201, arc-shaped groove; 21, first support plate; 22, second support plate; 3, arc-shaped linear light source; 301, rotating shaft; 35, sealing plate; 351, rotating hole; 352, mounting hole; 302, limiting column; 31, arc-shaped shell; 32, arc-shaped light rod; 33, arc-shaped lamp plate; 34, arc-shaped groove. DETAILED DESCRIPTION

[0036] To make the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects achieved, etc. of the present application clear, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0037] In this paper, 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 places in the specification does not necessarily refer to the same embodiment, and does not particularly limit its independence or association with 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 solution.

[0038] Unless otherwise defined, the meaning of the technical terms used herein is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms in this paper is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0039] In the description of the present application, the word "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 this paper generally represents that the associated objects before and after are a kind of "or" logical relationship.

[0040] In the present application, such as "first" and "second", the words 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.

[0041] 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.

[0042] In the present application, the terms "greater than", "less than", "exceed" and the like are understood as not including the number itself, and 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.

[0043] In the description of the embodiments of the present application, the spatial-related terms used, such as "center", "lengthwise", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "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 used to facilitate the description of the specific embodiments of the present application or to facilitate the reader's understanding, 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.

[0044] 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.

[0045] Embodiment one

[0046] In view of the defects of the existing light source, the applicant, based on years of practical experience and professional knowledge in designing and manufacturing such products, actively researches and innovates, hoping to create a technology that can solve the defects in the prior art, making the combined light source more practical. After continuous research, design, and repeated trial and improvement of the sample, the practical new type is finally created.

[0047] Please refer to Figures 1 to 6 The embodiment of the present application provides a combined light source, which comprises a ring-shaped fixing plate 1, a support plate group 2 and an arc-shaped linear light source 3. The ring-shaped fixing plate 1 has a detection through hole 101, and the ring-shaped fixing plate 1 serves as a support. At least three groups of support plate groups 2 are arranged on one side of the bottom of the ring-shaped fixing plate 1, and all the support plate groups 2 are arranged in a circumferential array around the detection through hole 101; the support plate group 2 serves to support the arc-shaped linear light source 3. The arc-shaped linear light source 3 is rotatably mounted on each support plate group 2, and the arc-shaped linear light source 3 is inclined downward to form an arc-shaped linear light spot on the surface of the workpiece, and the light emitting angle of the arc-shaped linear light source 3 is adjustable.

[0048] In the actual detection process, the arc-shaped linear light source 3 can be rotated according to the detection needs, and the light emitting angle of the arc-shaped linear light source 3 can be adjusted, so that the light emitting angle is at a suitable light emitting angle. In addition, the arc-shaped linear light source 3 arranged in a circumferential array around the detection through hole 101 makes the inclination angle of the linear light spot passing through the surface of the workpiece more diverse, so that the surface indentation defect of the workpiece can be better detected. It should be particularly noted that the light emitting angle of each arc-shaped linear light source 3 is individually adjustable. It should be further pointed out that the arc-shaped linear light source 3 is provided with at least three, and the three arc-shaped linear light sources 3 are all mounted on one side of the bottom of the ring-shaped fixing plate 1.

[0049] The combined light source in the embodiment can better detect the surface indentation defect of the workpiece, can effectively reduce the possibility of missed detection, can adapt to the detection of workpieces of various specifications, and has a larger detection application range.

[0050] Optionally, the support plate group 2 comprises a first support plate 21 and a second support plate 22 which are both inclined; the farther away from the ring-shaped fixing plate 1, the greater the distance between the first support plate 21 and the second support plate 22; and the two ends of the arc-shaped linear light source 3 are rotatably connected with the first support plate 21 and the second support plate 22 through rotating shafts 301.

[0051] Specifically, the first support plate 21 and the second support plate 22 which are inclined can better match the installation needs of the arc-shaped linear light source 3, so that the installation of the arc-shaped linear light source 3 is simpler, that is, the arc-shaped linear light source 3 can be squeezed into a suitable position, and the installation is simple and convenient.

[0052] Optionally, the rotating shaft 301 is a damping shaft. In this way, the arc-shaped linear light source 3 can be directly rotated to a suitable angle, i.e. the light emitting angle of the arc-shaped linear light source 3 can be directly changed, which is simple and convenient to adjust.

[0053] Optionally, the first support plate 21 and the second support plate 22 are both provided with an arc-shaped groove 201 arranged around the rotating shaft 301, and the arc-shaped linear light source 3 is provided with a limiting column 302 extending into the arc-shaped groove 201. The arc-shaped groove 201 limits the rotating angle of the arc-shaped linear light source 3, so that the light emitted by the arc-shaped linear light source 3 can always be projected on the workpiece in the detection station.

[0054] Optionally, the line light spots projected on the surface of the workpiece by the two adjacent arc-shaped linear light sources 3 intersect, so that the line light spots form a ring-shaped line light spot, thereby enabling the concave defect in each direction to be well displayed, which is beneficial to improving the detection accuracy.

[0055] Optionally, the arc-shaped linear light source 3 comprises an arc-shaped shell 31, an arc-shaped light collecting rod 32 and an arc-shaped lamp plate 33; the arc-shaped shell 31 has an arc-shaped groove 34, the arc-shaped lamp plate 33 is installed in the arc-shaped groove 34, and the arc-shaped light collecting rod 32 is installed at the slot opening of the arc-shaped groove 34 and is clamped by the two opposite side walls of the arc-shaped groove 34. The arc-shaped lamp plate 33 comprises an arc-shaped circuit board and a plurality of LED lamp beads arranged along the arc.

[0056] Optionally, the arc-shaped linear light source 3 further comprises a sealing plate 35 for sealing the end of the arc-shaped groove 34, the sealing plate 35 is detachably connected with the end of the arc-shaped shell 31, and the sealing plate 35 is provided with a rotating hole 351 for inserting the rotating shaft 301 and a positioning mounting hole 352 for inserting the limiting column 302. Preferably, the sealing plate 35 also limits the end of the arc-shaped lamp plate 33, avoiding the shaking of the arc-shaped lamp plate 33 during the rotation of the arc-shaped linear light source 3, and improving the fixing effect of the arc-shaped lamp plate 33.

[0057] Optionally, the limiting column 302 is detachably inserted into the positioning mounting hole 352, and the limiting column 302 protrudes from the sealing plate 35.

[0058] Optionally, the first support plate 21 and the second support plate 22 are both elastic plates, and the first support plate 21 and the second support plate 22 elastically clamp the two ends of the arc-shaped linear light source 3, so as to keep the light emitting angle of the arc-shaped linear light source unchanged.

[0059] Optionally, the cross section of the arc-shaped light collecting rod 32 is circular.

[0060] Embodiment two

[0061] The embodiment discloses a visual detection device, which comprises a combined light source as in the first embodiment and a detection camera installed on one side of the top of the annular fixing plate 1; the lens of the detection camera is directly opposite the detection through hole 101.

[0062] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of the present application, the patent protection scope of the present application should not be limited. Any technical solution obtained by replacing or modifying the equivalent structure or equivalent process based on the essential concept of the present application, using the content described in the specification and drawings of the present application, 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 combination light source, characterized in that, The utility model relates to a combined light source for workpiece surface detection, comprising: a ring-shaped fixed plate (1) having a detection through hole (101); at least three groups of support plate groups (2) arranged on one side of the bottom of the ring-shaped fixed plate (1), and all the support plate groups (2) being arranged in a circumferential array around the detection through hole (101); an arc-shaped linear light source (3) rotatably mounted on each group of support plate groups (2), the arc-shaped linear light source (3) being inclined downward to emit light to form an arc-shaped linear light spot on the surface of a workpiece, and the light emitting angle of the arc-shaped linear light source (3) being adjustable.

2. The combined light source according to claim 1, characterized in that The support plate groups (2) comprise first support plates (21) and second support plates (22) which are both arranged obliquely; the farther away from the ring-shaped fixed plate (1), the greater the distance between the first support plates (21) and the second support plates (22). Both ends of the arc-shaped linear light source (3) are rotatably connected to the first support plates (21) and the second support plates (22) through rotating shafts (301).

3. The combined light source according to claim 2, characterized in that The rotating shafts (301) are damping shafts.

4. The combined light source according to claim 2, characterized in that The first support plates (21) and the second support plates (22) are both provided with arc-shaped grooves (201) arranged around the rotating shafts (301), and the ends of the arc-shaped linear light source (3) are provided with limiting columns (302) inserted into the arc-shaped grooves (201).

5. The combined light source according to claim 1, characterized in that The linear light spots projected on the surface of a workpiece by two adjacent arc-shaped linear light sources (3) intersect.

6. The combined light source according to claim 1, characterized in that The arc-shaped linear light source (3) comprises an arc-shaped shell (31), an arc-shaped light collecting rod (32), and an arc-shaped lamp plate (33). The arc-shaped shell (31) has an arc-shaped groove (34), the arc-shaped lamp plate (33) is mounted in the arc-shaped groove (34), and the arc-shaped light collecting rod (32) is mounted at the opening of the arc-shaped groove (34) and clamped by the two side groove walls of the arc-shaped groove (34).

7. The combined light source according to claim 6, characterized in that The arc-shaped linear light source (3) further comprises a sealing plate (35) used for sealing the ends of the arc-shaped groove (34), the sealing plate (35) is detachably connected to the ends of the arc-shaped shell (31), and the sealing plate (35) is provided with a rotating hole (351) for inserting a rotating shaft (301) and a positioning mounting hole (352) for inserting a limiting column (302).

8. The combined light source according to claim 7, characterized in that The limiting column (302) is detachably inserted into the positioning mounting hole (352), and the limiting column (302) protrudes from the sealing plate (35).

9. The combined light source according to claim 2, characterized in that, The first support plates (21) and the second support plates (22) are both elastic plates, and the first support plates (21) and the second support plates (22) elastically clamp both ends of the arc-shaped linear light source (3).

10. A vision inspection apparatus characterized by comprising: The utility model further comprises a detection camera mounted on one side of the top of the ring-shaped fixed plate (1), and the lens of the detection camera faces the detection through hole (101). The lens of the detection camera faces the detection through hole (101).

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