Adjustable linear light source device and strip-shaped workpiece detection device

Abstract

The utility model relates to the technical field of light source structures, and discloses an adjustable linear light source device and a strip-shaped workpiece detection device, and the adjustable linear light source device comprises a first annular frame which is provided with a first detection hole, and the inner wall of the first detection hole is provided with a first linear light source; the first annular frame is provided with a first detection hole, the second annular frame is provided with a second detection hole, the center line of the first detection hole and the center line of the second detection hole coincide, a second linear light source is arranged on the inner wall of the second detection hole, and the light emitting direction of the first linear light source and the light emitting direction of the second linear light source are obliquely arranged relative to the first center line; the second annular frame is stacked on the first annular frame and rotationally connected with the first annular frame, and the second annular frame can rotate around the first center line relative to the first annular frame. According to the adjustable linear light source device and the strip-shaped workpiece detection device, the detection convenience can be improved, and heavy strip-shaped workpieces can be better detected.

Description

Technical Field

[0001] The utility model relates to the technical field of light source structures, in particular to an adjustable linear light source device and a strip-shaped workpiece detection device. Background Technique

[0002] A light source refers to a lighting element in a machine vision detection scenario, which plays a role in lighting a workpiece and can highlight the surface defect features of the workpiece. Conventional light sources include various types such as annular light sources and linear light sources; it can be understood that different light sources have different advantages.

[0003] A linear light source is used to emit light to form a strip-shaped light spot on the surface of a workpiece. Generally, the irradiation direction of the linear light source is fixed. Therefore, when detecting the appearance of a strip-shaped workpiece (such as a cable), if the position of the area to be detected on the strip-shaped workpiece changes, the linear light source needs to be reinstalled or the rotation angle of the workpiece needs to be readjusted so that the linear light source can accurately illuminate the area to be detected; whether it is to reinstall the linear light source and then adjust its position, or to adjust the rotation angle of the relatively heavy strip-shaped workpiece, it is rather troublesome.

[0004] In view of this, it is necessary to design an adjustable linear light source device and a strip-shaped workpiece detection device, which can improve the convenience of detection and can better detect relatively heavy strip-shaped workpieces.

[0005] The above information is given as background information only to assist in understanding the present disclosure, and it is not determined or admitted whether any of the above content can be used as the prior art relative to the present disclosure. Summary of the Utility Model

[0006] The utility model provides an adjustable linear light source device and a strip-shaped workpiece detection device, which can improve the convenience of detection and can better detect relatively heavy strip-shaped workpieces.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] An adjustable linear light source device includes:

[0009] A first annular frame is provided with a first detection hole, and a first linear light source is provided on the inner wall of the first detection hole;

[0010] A second annular frame is provided with a second detection hole. The center lines of the first detection hole and the second detection hole coincide. A second linear light source is provided on the inner wall of the second detection hole. The light-emitting directions of the first linear light source and the second linear light source are both inclined relative to the first center line;

[0011] The second annular frame is stacked on the first annular frame and rotatably connected to the first annular frame, and the second annular frame can rotate relative to the first annular frame about the first center line.

[0012] Optionally, an annular sliding groove is formed on the first annular frame, and an annular protrusion is provided on the second annular frame, and the annular protrusion is slidably connected to the annular sliding groove.

[0013] Optionally, a third annular frame is further included, a third detection hole is provided on the third annular frame, and the center line of the third detection hole coincides with the first center line;

[0014] A third linear light source is provided on the inner wall of the third detection hole, and the light emitting direction of the third linear light source is inclined relative to the first center line;

[0015] The third annular frame is stacked on the second annular frame, and the third annular frame can rotate relative to the second annular frame about the first center line.

[0016] Optionally, a plurality of the first linear light sources are arranged at intervals around the first center line on the inner wall of the first detection hole, and a plurality of the second linear light sources are arranged at intervals around the first center line on the inner wall of the second detection hole.

[0017] Optionally, a first driving device for driving the first annular frame to rotate about the first center line and a second driving device for driving the second annular frame to rotate about the first center line are further included.

[0018] Optionally, a first detection camera for detecting a first area to be detected of the workpiece is further included, the first detection camera is electrically connected to the first driving device, and the first driving device drives the first annular frame to rotate based on the detection image of the first detection camera, so that the light emitted by the first linear light source is always projected on the first area to be detected.

[0019] Optionally, a second detection camera for detecting a second area to be detected of the workpiece is further included, the second detection camera is electrically connected to the second driving device, and the second driving device drives the second annular frame to rotate based on the detection image of the second detection camera, so that the light emitted by the second linear light source is always projected on the second area to be detected.

[0020] Optionally, the inner wall surface of the first detection hole includes a plurality of first inclined planes connected end to end in sequence, and the first linear light source is installed on the first inclined plane;

[0021] The inner wall surface of the second detection hole includes a plurality of second inclined planes sequentially connected end to end, and the second linear light source is installed on the second inclined plane.

[0022] A strip-shaped workpiece detection device includes a surface detection component and the adjustable linear light source device as described in any one of the above. The surface detection component is used to take pictures of the strip-shaped workpiece for detection. The cross-section of the strip-shaped workpiece can be circular, rectangular, elliptical, polygonal, crescent-shaped, etc.

[0023] Optionally, four first linear light sources are provided, and four second linear light sources are provided;

[0024] The four first linear light sources are arranged in a circumferential array around the first center line, and the four second linear light sources are arranged in a circumferential array around the center line of the second detection hole.

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

[0026] In the adjustable linear light source device provided by the present utility model, a first linear light source is arranged in the first detection hole of the first annular frame, and a second linear light source is arranged in the second detection hole of the second annular frame. The first annular frame and the second annular frame are rotatably connected, and the second annular frame can rotate relative to the first annular frame around the first center line. Only by rotating the second annular frame can the second linear light source accurately illuminate the area to be detected of the strip-shaped workpiece (or only by rotating the first annular frame can the first linear light source accurately illuminate the area to be detected of the strip-shaped workpiece). Therefore, there is no need to reinstall or disassemble the adjustable linear light source device or readjust the position of the strip-shaped workpiece, effectively improving the convenience of detection and being able to better detect heavier strip-shaped workpieces.

[0027] The present utility model has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent detailed description, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed description. These accompanying drawings and detailed description are used together to explain the specific principles of the present utility model. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model 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 utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a cross-sectional structure schematic diagram of the adjustable linear light source device provided by the embodiment of the present utility model;

[0030] Figure 2 It is a schematic cross-sectional structure diagram of the adjustable linear light source device provided by an embodiment of the present utility model when detecting a workpiece;

[0031] Figure 3 It is a schematic side view of the adjustable linear light source device provided by an embodiment of the present utility model;

[0032] Figure 4 It is a schematic top view of the first annular frame provided by an embodiment of the present utility model;

[0033] Figure 5 It is a schematic diagram of the positions of the first linear light source and the second linear light source provided by an embodiment of the present utility model;

[0034] Figure 6 It is a schematic cross-sectional structure diagram of the adjustable linear light source device provided by an embodiment of the present utility model when detecting a workpiece.

[0035] Reference numerals: 1, the first annular frame; 101, the first detection hole; 11, the first linear light source; 2, the second annular frame; 201, the second detection hole; 21, the second linear light source; 102, the annular sliding groove; 202, the annular protrusion; 3, the third annular frame; 301, the third detection hole; 31, the third linear light source; 4, the first driving device; 5, the second driving device; 8, the third driving device; 6, the first detection camera; 7, the second detection camera; 1001, the first inclined plane; 2001, the second inclined plane; 100, the first center line; 200, the strip-shaped workpiece. Detailed implementation manners

[0036] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of the present application, the following is described in detail with reference to 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, so they are only examples and cannot be used to limit the protection scope of the present application.

[0037] Referring to "embodiment" in this article 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 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 the present 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 implementable technical solutions.

[0038] Unless otherwise defined, the meanings of technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0039] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. 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.

[0040] 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 relationships between these entities or operations.

[0041] Without further limitation, in this application, the expressions "including", "comprising", "having", or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the described elements. Thus, a process, method, or product that includes a series of elements may include not only those limited elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.

[0042] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "multiple" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0043] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. It is only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and does 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, it should not be construed as a limitation on the embodiments of this application.

[0044] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, terms such as "installed", "connected", "linked", "fixed", "set" should be understood in a broad sense. For example, the "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 components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0045] In view of the defects existing in the above-mentioned existing linear light source devices, based on the rich practical experience and professional knowledge in the design and manufacture of such products for many years by the applicant, and in cooperation with the application of theory, research and innovation have been actively carried out in the hope of creating a technology that can solve the defects in the prior art. Through continuous research, design, repeated sample production and improvement of the linear light source device, the present utility model with practical value has finally been created.

[0046] Please refer to Figures 1 to 5 , an adjustable linear light source device is provided in an embodiment of the present utility model, including: a first annular frame 1 provided with a first detection hole 101, and a first linear light source 11 is provided on the inner wall of the first detection hole 101; a second annular frame 2 provided with a second detection hole 201, the center lines of the first detection hole 101 and the second detection hole 201 coincide, and a second linear light source 21 is provided on the inner wall of the second detection hole 201. The light-emitting directions of the first linear light source 11 and the second linear light source 21 are both inclined relative to the first center line 100; the second annular frame 2 is stacked on the first annular frame 1 and rotatably connected to the first annular frame 1, and the second annular frame 2 can rotate relative to the first annular frame 1 around the first center line 100.

[0047] In this embodiment, the rotation angle of the first annular frame 1 or the second annular frame 2 can be directly adjusted, so that the first linear light source 11 or the second linear light source 21 can change the irradiation area and accurately irradiate the appropriate area of the strip-shaped workpiece 200 or the cable. Therefore, the situation of adjusting the position of the entire device can be avoided, and there is no need to adjust the position of the strip-shaped workpiece 200, which can make the light spot irradiate on the appropriate position faster, is beneficial to reducing the adjustment time, and improving the detection effect.

[0048] It should also be noted that the first annular frame 1 and the second annular frame 2 are rotatably connected, and the distance between the first linear light source 11 and the second linear light source 21 in the direction of the first center line 100 remains unchanged, so as to ensure that both the first linear light source 11 and the second linear light source 21 can irradiate the surface of the strip-shaped workpiece 200 well, for example, the light spots of both can be projected on the same area.

[0049] As shown Figure 6 in the figure, the first linear light source 11 may be provided with two or more.

[0050] Optionally, an annular sliding groove 102 is formed on the first annular frame 1, and an annular protrusion 202 is provided on the second annular frame 2. The annular protrusion 202 is slidably connected to the annular sliding groove 102. That is, through the cooperation between the annular sliding groove 102 and the annular protrusion 202, the rotational connection between the first annular frame 1 and the second annular frame 2 can be realized.

[0051] Optionally, the adjustable linear light source device further includes a third annular frame 3. A third detection hole 301 is provided on the third annular frame 3, and the center line of the third detection hole 301 coincides with the first center line 100. A third linear light source 31 is provided on the hole wall of the third detection hole 301, and the light-emitting direction of the third linear light source 31 is inclined relative to the first center line 100. The third annular frame 3 is stacked on the second annular frame 2, and the third annular frame 3 can rotate relative to the second annular frame 2 around the first center line 100. Specifically, the irradiation areas of the first linear light source 11, the second linear light source 21, and the third linear light source 31 may be completely the same or separated from each other, and the irradiation areas of the first linear light source 11, the second linear light source 21, and the third linear light source 31 are adjustable, so as to meet different detection requirements.

[0052] Optionally, a plurality of first linear light sources 11 are arranged at intervals around the first center line 100 on the inner wall of the first detection hole 101, and a plurality of second linear light sources 21 are arranged at intervals around the first center line 100 on the inner wall of the second detection hole 201, as Figure 5 shown in the figure, which can illuminate the entire outer circumference of the strip-shaped workpiece; or, the irradiation areas of the first linear light source 11 and the second linear light source 21 can also be made to coincide, so as to improve the illumination brightness and better meet the needs of camera detection.

[0053] Optionally, the adjustable linear light source device further includes a first driving device 4 for driving the first annular frame 1 to rotate around the first center line 100 and a second driving device 5 for driving the second annular frame 2 to rotate around the first center line 100. The first driving device 4 includes a driving motor, a synchronous belt driving wheel mounted on the output shaft of the driving motor, a synchronous belt driven wheel mounted on the first annular frame 1, and a synchronous belt tensioned around the synchronous belt driving wheel and the synchronous belt driven wheel. The structure of the second driving device 5 may be the same as that of the first driving device 4. It should also be added that the first driving device 4 and the second driving device 5 may also be driving structures of other structures.

[0054] Optionally, the adjustable linear light source device further includes a first detection camera 6 for detecting a first area to be detected of the workpiece. The first detection camera 6 is electrically connected to the first driving device 4. The first driving device 4 drives the first annular frame 1 to rotate based on the detection image of the first detection camera 6, so that the light emitted by the first linear light source 11 is always projected onto the first area to be detected.

[0055] It should be noted first that there are identification bands (also known as color bars or cable color bands) of different colors on the outer periphery of some ropes, cables or other strip-shaped workpieces 200. In the actual production process, there is a need to detect the identification bands. However, for strip-shaped workpieces 200 of different specifications, the positions of the identification bands are different. Therefore, the irradiation area needs to be adjusted. In this embodiment, the first detection camera 6 is used to identify the first area to be detected, and the identification band is in the first area to be detected. Thus, the position of the first annular frame 1 can be adjusted intelligently, and further ensure that the first linear light source 11 can accurately irradiate the appropriate area. It should also be added that a longer strip-shaped workpiece may be twisted during the conveying process. Therefore, the structure in this embodiment can better illuminate the area where the identification band is located (i.e., the first area to be detected).

[0056] Optionally, the adjustable linear light source device further includes a second detection camera 7 for detecting a second area to be detected of the workpiece. The second detection camera 7 is electrically connected to the second driving device 5. The second driving device 5 drives the second annular frame 2 to rotate based on the detection image of the second detection camera 7, so that the light emitted by the second linear light source 21 is always projected onto the second area to be detected. Similarly, based on the detection image of the second detection camera 7, the second driving device 5 can drive the second linear light source 21 to rotate to a suitable angle to ensure that another area or the same area is illuminated.

[0057] It should also be noted that the adjustable linear light source device is further provided with a third detection camera for detecting a third area to be detected of the workpiece. The third detection camera is electrically connected to the third driving device 8. The third driving device 8 drives the third annular frame 3 to rotate to a suitable angle based on the detection image of the third detection camera.

[0058] Furthermore, the adjustable linear light source device is further provided with an annular bearing ring. The first detection camera 6 and the second detection camera 7 are both installed on the annular bearing ring. The annular bearing ring surrounds the first center line 100, and the positions of the first detection camera 6 and the second detection camera 7 are slidably adjustable, so as to meet more detection needs. Generally, before detection, the positions of the first detection camera 6 and the second detection camera 7 need to be adjusted and fixed before subsequent detection.

[0059] It should also be noted that the first detection camera 6 and the second detection camera 7 are electrically connected to each other, so that the first driving device 4 can also adjust the rotation angle of the first annular frame 1 based on the detection image of the second detection camera 7, avoiding the situation that the first detection camera 6 cannot detect the identification tape or other markers, and can better adjust the rotation angle of the first annular frame 1.

[0060] Optionally, the inner wall surface of the first detection hole 101 includes a plurality of first inclined planes 1001 connected end to end in sequence, and the first linear light source 11 is installed on the first inclined plane 1001; the inner wall surface of the second detection hole 201 includes a plurality of second inclined planes 2001 connected end to end in sequence, and the second linear light source 21 is installed on the second inclined plane 2001. Specifically, the setting of the first inclined plane 1001 and the second inclined plane 2001 can make the installation of the linear light source 11 and the second linear light source 21 more convenient and stable.

[0061] Embodiment 2

[0062] A strip-shaped workpiece detection device includes a surface detection component and an adjustable linear light source device as described in Embodiment 1. The surface detection component is used to take pictures and detect the workpiece, and may include a plurality of vision detection cameras.

[0063] Optionally, there are four first linear light sources 11 and four second linear light sources 21;

[0064] The four first linear light sources 11 are arranged in a circumferential array around the first center line 100, and the four second linear light sources 21 are arranged in a circumferential array around the center line of the second detection hole 201.

[0065] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of the present application, using the content recorded in the text and drawings of the specification of the present application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. An adjustable linear light source device, characterized in that, Comprising: A first annular frame (1), provided with a first detection hole (101), and a first linear light source (11) is arranged on the inner wall of the first detection hole (101); A second annular frame (2), provided with a second detection hole (201), the center lines of the first detection hole (101) and the second detection hole (201) coincide, and a second linear light source (21) is arranged on the inner wall of the second detection hole (201), and the light-emitting directions of the first linear light source (11) and the second linear light source (21) are both inclined with respect to the first center line (100) of the first detection hole (101); The second annular frame (2) is stacked on the first annular frame (1) and is rotatably connected to the first annular frame (1), and the second annular frame (2) can rotate relative to the first annular frame (1) about the first center line (100).

2. The adjustable linear light source device according to claim 1, wherein An annular sliding groove (102) is formed in the first annular frame (1), and an annular protrusion (202) is arranged on the second annular frame (2), and the annular protrusion (202) is slidably connected to the annular sliding groove (102).

3. The adjustable linear light source device according to claim 1, characterized in that It further includes a third annular frame (3), the third annular frame (3) is provided with a third detection hole (301), and the center line of the third detection hole (301) coincides with the first center line (100); A third linear light source (31) is arranged on the hole wall of the third detection hole (301), and the light-emitting direction of the third linear light source (31) is inclined with respect to the first center line (100); The third annular frame (3) is stacked on the second annular frame (2), and the third annular frame (3) can rotate relative to the second annular frame (2) about the first center line (100).

4. The adjustable linear light source device according to claim 1, characterized in that, A plurality of the first linear light sources (11) are arranged at intervals around the first center line (100) on the inner wall of the first detection hole (101), and a plurality of the second linear light sources (21) are arranged at intervals around the first center line (100) on the inner wall of the second detection hole (201).

5. The adjustable linear light source device according to claim 1, wherein It further includes a first driving device (4) for driving the first annular frame (1) to rotate about the first center line (100) and a second driving device (5) for driving the second annular frame (2) to rotate about the first center line (100).

6. The adjustable linear light source device according to claim 5, characterized in that, It further includes a first detection camera (6) for detecting a first area to be detected of the workpiece, and the first detection camera (6) is electrically connected to the first driving device (4) so that the light emitted by the first linear light source (11) is always projected onto the first area to be detected.

7. The adjustable linear light source device according to claim 5, wherein It further includes a second detection camera (7) for detecting a second area to be detected of the workpiece, and the second detection camera (7) is electrically connected to the second driving device (5) so that the light emitted by the second linear light source (21) is always projected onto the second area to be detected.

8. The adjustable linear light source device according to claim 1, characterized in that, The inner wall surface of the first detection hole (101) includes a plurality of first inclined planes (1001) connected end to end in sequence, and the first linear light source (11) is installed on the first inclined plane (1001); The inner wall surface of the second detection hole (201) includes a plurality of second inclined planes (2001) connected end to end in sequence, and the second linear light source (21) is installed on the second inclined plane (2001).

9. A strip workpiece detection device, characterized in that, It includes a surface detection component and an adjustable linear light source device as described in any one of claims 1 to 8.

10. The strip workpiece detection device according to claim 9, characterized in that, Four of the first linear light sources (11) are provided, and four of the second linear light sources (21) are provided; The four first linear light sources (11) are arranged in a circumferential array around the first center line (100), and the four second linear light sources (21) are arranged in a circumferential array around the center line of the second detection hole (201).

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