Angle-adjustable arched light source and machine vision detection device

Abstract

The invention relates to the technical field of machine vision detection, and discloses an angle-adjustable arched light source and a machine vision detection device. The angle-adjustable arched light source comprises two arc-shaped shells, a lamp panel is arranged in the arc-shaped shell; the two arc-shaped shells are jointly connected with an angle adjusting assembly. The angle adjusting assembly comprises a pair of upper adjusting plates close to the camera side and used for adjusting the size of an observation opening and a pair of lower adjusting plates far away from the camera side and used for being matched with the upper adjusting plates to adjust the light emitting angle of the lamp panel. The arched light source is separated into the two independent arc-shaped shells, the rotating angles of the arc-shaped shells are adjusted through the angle adjusting assemblies, then the angle of emergent light of the lamp panel is adjusted, the arched light source with the adjustable irradiation angle is achieved, the detection convenience is improved, and the detection cost is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of machine vision detection, and particularly relates to an angle-adjustable arched light source and a machine vision detection device. Background Art

[0002] Machine vision refers to a technology that replaces the human eye to measure and judge workpieces. Usually, a light source is required to illuminate the workpieces, and a camera is used to obtain the surface information of the workpieces. In the application of industrial inspection, different lighting strategies are often required for different inspection requirements. For example, for low-angle light source illumination, the reflected light from the flat surface part cannot enter the lens, and the image brightness is low, while the reflected light from the uneven part enters the lens, and the image brightness is high. Therefore, it is mainly applied to projects such as surface scratch detection, surface foreign object detection, marking character detection and recognition, etc.; for high-angle light source illumination, the contour features of the flat area on the object surface can be presented, and features such as scratches and steps on the relatively messy surface can also be shown, and there are obvious differences in areas with different surface roughness or different light reflectivities.

[0003] The arched light source is a mainstream light source commonly used in machine vision detection. Through the arc-shaped structure design, when the arched light source illuminates the workpiece, the light emitted by the LED lamp is reflected by the inner arc surface and then irradiates outward from the space between the two base seats, which can concentrate the light and reduce scattering, improving the detection accuracy. However, most of the existing arched light sources have a fixed light source irradiation angle and cannot be compatible with different detection requirements. Therefore, sometimes multiple sets of arched light sources with different irradiation angles are required to cooperate with the camera to achieve the detection of a workpiece. As a result, multiple sets of arched light sources need to be manufactured, which undoubtedly greatly increases the detection cost.

[0004] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as the prior art relative to the present disclosure. Summary of the Invention

[0005] The purpose of the present invention is to provide an angle-adjustable arched light source and a machine vision detection device to solve or at least partially solve the technical problems existing in the prior art.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides an angle-adjustable arched light source, including two arc-shaped outer shells; a lamp board is arranged inside the arc-shaped outer shell;

[0008] The two arc-shaped outer shells are jointly connected with an angle adjustment component; the angle adjustment component includes a pair of upper adjustment plates near the camera side for adjusting the size of the observation port and a pair of lower adjustment plates far from the camera side for cooperating with the upper adjustment plates to adjust the light-emitting angle of the light board.

[0009] Both the upper adjustment plate and the lower adjustment plate are limiting mechanisms with chutes on their surfaces; on both end faces of the arc-shaped outer shell, guide rods capable of sliding along the chutes are respectively installed at positions corresponding to each chute, and a positioning member capable of positioning the guide rods in the chutes is further provided at one end of the guide rods far from the arc-shaped outer shell.

[0010] Optionally, the positioning member is threadedly connected to one end of the guide rod far from the arc-shaped outer shell, and can tightly fix the upper adjustment plate or the lower adjustment plate on the end face of the arc-shaped outer shell.

[0011] Optionally, one chute is respectively opened at both ends of the upper adjustment plate, and one chute is also respectively opened at both ends of the lower adjustment plate;

[0012] On the end face of the arc-shaped outer shell, insertion holes are respectively opened at positions corresponding to each guide rod, and each guide rod is respectively fixedly inserted into the corresponding insertion hole.

[0013] Optionally, the chutes on the two upper adjustment plates are all first strip-shaped through grooves with the same shape; the chutes on the two lower adjustment plates are all second strip-shaped through grooves with the same shape;

[0014] The length of the first strip-shaped through groove is greater than the length of the second strip-shaped through groove.

[0015] Optionally, the arc-shaped outer shell is in the shape of a sector ring cylinder, and a light source mounting plate is provided on the edge of the arc-shaped outer shell far from the camera side extending towards the central axis of the arc-shaped outer shell, and the light board is mounted on the light source mounting plate;

[0016] The inner wall of the arc-shaped outer shell is a reflective wall capable of reflecting light, and the light emitted by the light board can be reflected by the inner wall of the arc-shaped outer shell and emitted from the side of the arc-shaped outer shell far from the observation port.

[0017] Optionally, a plurality of heat dissipation grooves are spacedly arranged on the cylindrical surface of the arc-shaped outer shell.

[0018] Optionally, a plurality of LED lights are evenly spacedly arranged on the light board along the direction parallel to the central axis.

[0019] Optionally, the lower adjustment plate is a telescopic plate with adjustable length;

[0020] The telescopic plate includes two end plates with the chutes formed thereon, a telescopic section telescopically connected between the two end plates, and a limiting member for defining the telescopic length of the telescopic plate.

[0021] Optionally, the material of the arc-shaped housing is aluminum or aluminum alloy.

[0022] In a second aspect, the present invention provides a machine vision detection device, including an arched light source and a camera disposed opposite to the observation port of the arched light source, characterized in that the arched light source adopts an angle-adjustable arched light source as described above.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention separates the arched light source into two independent arc-shaped housings, adjusts the rotation angle of the arc-shaped housing through the angle adjustment component, and then correspondingly adjusts the angle of the emitted light of the lamp panel, realizing that a set of arched light sources can be compatible with different light source irradiation angles, which not only improves the convenience of detection, but also greatly reduces the detection cost.

[0025] The present invention has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent specific embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent specific embodiments, and these drawings and specific embodiments are jointly used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of an angle-adjustable arched light source provided by an embodiment of the present invention from one perspective.

[0028] Figure 2 is a schematic structural diagram of an angle-adjustable arched light source provided by an embodiment of the present invention from another perspective.

[0029] Figure 3 is a top view structural diagram of an angle-adjustable arched light source provided by an embodiment of the present invention.

[0030] Figure 4 is Figure 3 the sectional view taken along the line L-L of

[0031] Figure 5It is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 45 degrees.

[0032] Figure 6 It is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 90 degrees.

[0033] Figure 7 It is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at one angle.

[0034] Figure 8 It is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at another angle.

[0035] In the figure:

[0036] 10. Arc - shaped housing; 101. Observation port; 11. Jack; 12. Heat dissipation slot; 13. Lamp board; 131. LED lamp; 14. Light source mounting board; 20. Angle adjustment assembly; 21. Upper adjustment plate; 22. Lower adjustment plate; 23. Slide groove; 30. Guide rod. Detailed implementation manners

[0037] To illustrate in detail the possible application scenarios, technical principles, feasible specific solutions, achievable purposes and effects of this application, the following is a detailed description with reference to the specific embodiments listed and in conjunction with the attached drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.

[0038] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of this application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding feasible technical solutions.

[0039] Unless otherwise defined, the meanings of the technical terms used in this article are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of relevant terms in this article is only for describing specific embodiments and is not intended to limit this application.

[0040] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.

[0041] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationship, etc. between these entities or operations.

[0042] Without further limitation, in this application, the expressions such as "including", "comprising", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be additional elements in the process, method or product including the said elements. Thus, in a process, method or product including a series of elements, it can include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0043] The same as the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the recited number; expressions such as "above", "below", "within" are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way unless otherwise specifically defined.

[0044] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of this application or for the reader to understand, rather than indicating or implying 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, it should not be construed as a limitation to the embodiments of this application.

[0045] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms such as "installed", "connected", "coupled", "fixed", "set" should be understood in a broad sense. For example, the said "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 directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0046] Embodiment 1:

[0047] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention from one perspective, Figure 2 and which is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention from another perspective.

[0048] As Figure 1 shown, this embodiment provides an angle - adjustable arched light source, including two arc - shaped outer shells 10 that can be butted into an arch shape. The two arc - shaped outer shells 10 are spaced apart, and an observation port 101 is formed in the middle;

[0049] Specifically, as an optional implementation manner, in this embodiment, the arc - shaped outer shell 10 is in the shape of a sector - ring column. As Figure 2 shown, a light - source mounting plate 14 is provided on the edge of the arc - shaped outer shell 10 far from the camera side (i.e., the lower - side edge of the arc - shaped outer shell 10 in Figure 2 ) extending towards the central axis of the arc - shaped outer shell 10. The lamp board 13 is mounted on the light - source mounting plate 14;

[0050] It should be noted that the inner wall of the arc - shaped outer shell 10 is a reflective wall that can reflect light. The light emitted by the lamp board 13 can be reflected by the inner wall of the arc - shaped outer shell 10 and emitted from the side of the arc - shaped outer shell 10 far from the observation port 101 (i.e., the lower side of the angle - adjustable arched light source in Figure 2 ).

[0051] Furthermore, as Figure 1 shown, in this embodiment, the two arc - shaped outer shells 10 are commonly connected with an angle - adjustment assembly 20;

[0052] Specifically, the angle - adjustment assembly 20 includes a pair of upper adjustment plates 21 near the camera side for adjusting the size of the observation port 101 and a pair of lower adjustment plates 22 far from the camera side for cooperating with the upper adjustment plates 21 to adjust the light - emitting angle of the lamp board 13; both the upper adjustment plates 21 and the lower adjustment plates 22 are limiting mechanisms with sliding grooves 23 formed on their surfaces;

[0053] More specifically, on both end faces of the arc - shaped outer shell 10, guide rods 30 that can slide along the sliding grooves 23 are respectively installed at positions corresponding to the sliding grooves 23. A positioning member (not shown in the figure) for positioning the position of the guide rod 30 in the sliding groove 23 is further provided at one end of the guide rod 30 far from the arc - shaped outer shell 10.

[0054] In this embodiment, the arched light source is separated into two independent arc-shaped housings 10. The rotation angle of the arc-shaped housing is adjusted through the angle adjustment assembly 20, and then the angle of the light emitted by the lamp board 13 is correspondingly adjusted, realizing that a set of arched light sources can be compatible with different light source irradiation angles, which not only improves the convenience of detection but also greatly reduces the detection cost.

[0055] More specifically, as an alternative embodiment, the positioning member is threadedly connected to the end of the guide rod 30 away from the arc-shaped housing 10, and can fix the upper adjustment plate 21 or the lower adjustment plate 22 tightly against the end face of the arc-shaped housing 10.

[0056] For ease of understanding, as an alternative embodiment, as Figure 1 and Figure 2 shown, a chute 23 is respectively provided at both ends of the upper adjustment plate 21, and a chute 23 is also respectively provided at both ends of the lower adjustment plate 22;

[0057] Corresponding to the positions of the respective guide rods 30, insertion holes 11 are respectively provided on the end face of the arc-shaped housing 10, and the respective guide rods 30 are fixedly inserted into the corresponding insertion holes 11.

[0058] Therefore, the two arc-shaped housings 10 in this embodiment can be used separately or in combination;

[0059] When it is necessary to use two in combination, it is necessary to insert the guide rods 30 into the respective insertion holes 11, and combine with the chutes 23 on the upper adjustment plate 21 or the lower adjustment plate 22 to realize the relative position change between the two arc-shaped housings 10, and then the respective rotation angles can be adjusted, thereby changing the irradiation angle of the light source.

[0060] Please refer to Figure 3 and Figure 4 , Figure 3 which is a top view structural schematic diagram of an angle-adjustable arched light source provided by an embodiment of the present invention, Figure 4 is Figure 3 the sectional view taken along the line L-L of

[0061] Specifically, a plurality of LED lights 131 are uniformly spaced along the direction parallel to the central axis on the lamp board 13.

[0062] Figure 4 shows the optical path schematic diagram at the initial position (i.e., at this time, the lamp board 13 has a rotation angle of 0), which can realize low-angle light source irradiation;

[0063] If it is necessary to increase the irradiation angle of the light source, corresponding adjustment can be made through the angle adjustment assembly 20. After the angle is adjusted, the position of the guide rod 30 in the chute 23 can be positioned by the positioning member to fix the position state of the arc-shaped housing 10;

[0064] As Figure 5 and Figure 6 shown Figure 5 Fig. 0 is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 45 degrees. Figure 6 Fig. 1 is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 90 degrees.

[0065] Furthermore, the adjustment range design of the angle at which the light source irradiates can be determined by designing the stroke range of the sliding groove 23 on the adjustment plate. When a larger angle adjustment range needs to be achieved, the stroke range of the sliding groove 23 on the lower adjustment plate 22 is also larger. Therefore, as a preferred implementation manner, in this embodiment, the lower adjustment plate 22 adopts a telescopic plate with adjustable length.

[0066] Specifically, the telescopic plate includes two end plates with sliding grooves 23 formed thereon, a telescopic section telescopically connected between the two end plates, and a limiting member for limiting the telescopic length of the telescopic plate.

[0067] It should be noted that the rotation angle of the lamp board 13 is generally within 0 - 45 degrees, which can meet most detection requirements. Therefore, the lower adjustment plate 22 may also be implemented without using a longer adjustment plate or telescopic plate.

[0068] As an alternative implementation manner, as Figure 7 and Figure 8 shown Figure 7 Fig. 2 is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at one angle. Figure 8 Fig. 3 is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at another angle.

[0069] In this embodiment, the sliding grooves 23 on the two upper adjustment plates 21 are both first - shaped through slots with the same shape; the sliding grooves 23 on the two lower adjustment plates 22 are both second - shaped through slots with the same shape.

[0070] The length of the first - shaped through slot is greater than the length of the second - shaped through slot.

[0071] As a preferred implementation manner, in this embodiment, a plurality of heat - dissipation grooves 12 are arranged at intervals on the cylindrical surface of the arc - shaped housing 10.

[0072] As a preferred implementation manner, in this embodiment, the arc - shaped housing 10 is made of aluminum or aluminum alloy material with better heat - dissipation effect.

[0073] In summary, in this embodiment, the arched light source is separated into two independent arc-shaped housings, which can be used separately or in combination; when used in combination, the rotation angle of the arc-shaped housing can be correspondingly adjusted through the angle adjustment component, and then the emission angle of the light on the lamp board can be correspondingly adjusted, realizing that a set of arched light sources can be compatible with different light source irradiation angles, which not only improves the convenience of detection, but also greatly reduces the detection cost.

[0074] Embodiment 2:

[0075] This embodiment provides a machine vision detection device, including an arched light source and a camera arranged opposite to the observation port 101 of the arched light source;

[0076] As Figure 1 shown, this embodiment provides an angle-adjustable arched light source, including two arc-shaped housings 10 that can be butted into an arch shape. The two arc-shaped housings 10 are arranged at intervals, and an observation port 101 is formed in the middle; the camera can take an image of the workpiece to be detected through the observation port 101;

[0077] Specifically, as an optional implementation manner, in this embodiment, the arc-shaped housing 10 is in the shape of a sector ring column. As Figure 2 shown, a light source mounting plate 14 is provided on the edge of the arc-shaped housing 10 far from the camera side (that is, Figure 2 in, the lower edge of the arc-shaped housing 10) extending towards the central axis of the arc-shaped housing 10, and the lamp board 13 is mounted on the light source mounting plate 14;

[0078] It should be noted that the inner wall of the arc-shaped housing 10 is a reflective wall that can reflect light, and the light emitted by the lamp board 13 can be reflected by the inner wall of the arc-shaped housing 10 and emitted from the side of the arc-shaped housing 10 far from the observation port 101 (that is, Figure 2 the lower side of the angle-adjustable arched light source in).

[0079] Furthermore, as Figure 1 shown, in this embodiment, the two arc-shaped housings 10 are commonly connected with an angle adjustment component 20;

[0080] Specifically, the angle adjustment component 20 includes a pair of upper adjustment plates 21 near the camera side for adjusting the size of the observation port 101 and a pair of lower adjustment plates 22 far from the camera side for cooperating with the upper adjustment plates 21 to adjust the light emission angle of the lamp board 13; both the upper adjustment plates 21 and the lower adjustment plates 22 are limiting mechanisms with chutes 23 opened on the surface;

[0081] More specifically, on the two end faces of the arc-shaped housing 10, guide rods 30 that can slide along the chutes 23 are respectively arranged at positions corresponding to the chutes 23, and a positioning member (not shown in the figure) for positioning the position of the guide rod 30 in the chute 23 is further provided at the end of the guide rod 30 far from the arc-shaped housing 10.

[0082] In this embodiment, the arched light source is separated into two independent arc-shaped housings 10. The rotation angle of the arc-shaped housing is adjusted through the angle adjustment assembly 20, and then the angle of the emitted light of the lamp panel 13 is correspondingly adjusted, realizing that a set of arched light sources can be compatible with different light source irradiation angles, which not only improves the convenience of detection, but also greatly reduces the detection cost.

[0083] More specifically, as an alternative embodiment, the positioning member is threadedly connected to the end of the guide rod 30 away from the arc-shaped housing 10, and can fix the upper adjustment plate 21 or the lower adjustment plate 22 tightly against the end face of the arc-shaped housing 10.

[0084] For ease of understanding, as an alternative embodiment, as Figure 1 and Figure 2 shown, a chute 23 is respectively opened at both ends of the upper adjustment plate 21, and a chute 23 is also respectively opened at both ends of the lower adjustment plate 22;

[0085] Corresponding to the positions of the respective guide rods 30, insertion holes 11 are respectively opened on the end face of the arc-shaped housing 10, and the respective guide rods 30 are fixedly inserted into the corresponding insertion holes 11.

[0086] Therefore, the two arc-shaped housings 10 in this embodiment can be used separately or in combination;

[0087] When it is necessary to use two in combination, it is necessary to insert the guide rod 30 into each insertion hole 11, and combine the chute 23 on the upper adjustment plate 21 or the lower adjustment plate 22 to realize the relative position change between the two arc-shaped housings 10, and then the respective rotation angles can be adjusted, thereby changing the irradiation angle of the light source.

[0088] Please refer to Figure 3 and Figure 4 , Figure 3 is a top view structural schematic diagram of an angle-adjustable arched light source provided by an embodiment of the present invention, Figure 4 is Figure 3 the sectional view taken along the line L-L of

[0089] Specifically, a plurality of LED lights 131 are uniformly spaced along the direction parallel to the central axis on the lamp panel 13.

[0090] Figure 4 shows the optical path schematic diagram at the initial position (that is, when the lamp panel 13 is at a 0 rotation angle), which can realize low-angle light source irradiation;

[0091] If it is necessary to increase the irradiation angle of the light source, corresponding adjustment can be made through the angle adjustment assembly 20. After the angle is adjusted, the position of the guide rod 30 in the chute 23 can be positioned by the positioning member to fix the position state of the arc-shaped housing 10.

[0092] As shown in Figure 5 and Figure 6 shown, Figure 5 Figure 45 is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 45 degrees, Figure 6 Figure 90 is a schematic optical path diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at 90 degrees.

[0093] Furthermore, the adjustment range design of the illumination angle of the light source can be determined by designing the stroke range of the sliding groove 23 on the adjustment plate. When a larger angle adjustment range is required, the stroke range of the sliding groove 23 of the lower adjustment plate 22 is also larger. Therefore, as a preferred embodiment, in this embodiment, the lower adjustment plate 22 adopts a telescopic plate with adjustable length;

[0094] Specifically, the telescopic plate includes two end plates with sliding grooves 23 opened thereon, a telescopic section telescopically connected between the two end plates, and a limiting member for limiting the telescopic length of the telescopic plate.

[0095] It should be noted that the rotation angle of the lamp board 13 is generally within 0 - 45 degrees, which can meet most detection requirements. Therefore, the lower adjustment plate 22 can also be realized without using a longer adjustment plate or telescopic plate;

[0096] As an alternative embodiment, as shown in Figure 7 and Figure 8 shown, Figure 7 Figure 11 is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at one angle, Figure 8 Figure 12 is a schematic structural diagram of an angle - adjustable arched light source provided by an embodiment of the present invention at another angle;

[0097] In this embodiment, the sliding grooves 23 on the two upper adjustment plates 21 are both the first - shaped through - slots with the same shape; the sliding grooves 23 on the two lower adjustment plates 22 are both the second - shaped through - slots with the same shape;

[0098] The length of the first - shaped through - slot is greater than the length of the second - shaped through - slot.

[0099] As a preferred embodiment, in this embodiment, a plurality of heat - dissipation grooves 12 are spacedly arranged on the cylindrical surface of the arc - shaped housing 10.

[0100] As a preferred embodiment, in this embodiment, the arc - shaped housing 10 is made of aluminum or aluminum alloy material with better heat - dissipation effect.

[0101] The machine vision detection device of this embodiment has high flexibility. Its light source can adjust different illumination angles, can be compatible with different detection requirements, greatly improves the convenience of detection, and also reduces the detection cost.

[0102] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An angle-adjustable arched light source, characterized in that, It includes two arc-shaped housings (10); a lamp board (13) is arranged inside the arc-shaped housings (10); The two arc-shaped housings (10) are jointly connected with an angle adjustment assembly (20); the angle adjustment assembly (20) includes a pair of upper adjustment plates (21) near the camera side for adjusting the size of the observation port (101) and a pair of lower adjustment plates (22) far from the camera side for cooperating with the upper adjustment plates (21) to adjust the light-emitting angle of the lamp board (13); Both the upper adjustment plates (21) and the lower adjustment plates (22) are limiting mechanisms with chutes (23) on their surfaces; on the two end faces of the arc-shaped housings (10), guide rods (30) capable of sliding along the chutes (23) are respectively installed at positions corresponding to the chutes (23), and a positioning member capable of positioning the guide rods (30) in the chutes (23) is also provided at one end of the guide rods (30) far from the arc-shaped housings (10).

2. The angle-adjustable arched light source according to claim 1, wherein The positioning member is threadedly connected to one end of the guide rod (30) far from the arc-shaped housing (10), and can tightly fix the upper adjustment plate (21) or the lower adjustment plate (22) on the end face of the arc-shaped housing (10).

3. The adjustable-angle arched light source according to claim 1, wherein One chute (23) is respectively opened at both ends of the upper adjustment plate (21), and one chute (23) is also respectively opened at both ends of the lower adjustment plate (22); On the end faces of the arc-shaped housings (10), insertion holes (11) are respectively opened at positions corresponding to the guide rods (30), and the guide rods (30) are respectively fixedly inserted into the corresponding insertion holes (11).

4. The angle-adjustable arched light source according to claim 3, characterized in that, The chutes (23) on the two upper adjustment plates (21) are all first strip-shaped through slots with the same shape; the chutes (23) on the two lower adjustment plates (22) are all second strip-shaped through slots with the same shape; The length of the first strip-shaped through slot is greater than the length of the second strip-shaped through slot.

5. The angle-adjustable arched light source according to claim 1, wherein The arc-shaped housing (10) is in the shape of a sector ring cylinder, and a light source mounting plate (14) is provided on the edge of the arc-shaped housing (10) far from the camera side extending towards the central axis direction of the arc-shaped housing (10), and the lamp board (13) is mounted on the light source mounting plate (14); The inner wall of the arc-shaped housing (10) is a reflective wall capable of reflecting light, and the light emitted by the lamp board (13) can be reflected by the inner wall of the arc-shaped housing (10) and emitted from the side of the arc-shaped housing (10) far from the observation port (101).

6. The angle-adjustable arched light source according to claim 5, characterized in that, A plurality of heat dissipation slots (12) are arranged at intervals on the cylindrical surface of the arc-shaped housing (10).

7. An angle-adjustable arched light source according to claim 5, characterized in that, A plurality of LED lamps (131) are evenly arranged at intervals on the lamp board (13) along the direction parallel to the central axis.

8. The angle-adjustable arched light source according to claim 4, wherein The lower adjustment plate (22) is a telescopic plate with adjustable length; The telescopic plate includes two end plates with the chutes (23) opened thereon, a telescopic section telescopically connected between the two end plates, and a limiting member for limiting the telescopic length of the telescopic plate.

9. The angle-adjustable arched light source according to claim 1, wherein The material of the arc-shaped housing (10) is aluminum or aluminum alloy.

10. A machine vision detection device, comprising an arched light source and a camera disposed opposite an observation port (101) of the arched light source, characterized in that, The arched light source adopts an angle-adjustable arched light source as described in any one of claims 1-9.

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