Bearing detector

Abstract

The utility model relates to the technical field of bearing detection, in particular to a bearing detector, which comprises a bearing runner and an image acquisition unit, a detection station is arranged on the bearing runner; the two image acquisition units are oppositely arranged on the two sides of the detection station; the image acquisition unit comprises a light source mechanism and an image acquisition part; the light source mechanism comprises first and second light source assemblies; the first light source assembly is an area light source and used for emitting first light to the bearing, and a first through hole is formed in the first light source assembly; the second light source assembly is connected with the first light source assembly, the second light source assembly is a sphere integral light source, the second light source assembly is used for emitting second light to the bearing from the first through hole, and a second through hole is formed in the second light source assembly; the image acquisition part is arranged on one side, far away from the detection station, of the light source mechanism and is used for receiving the reflected first light and the second light. The bearing detector is high in space utilization rate and high in detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing detection, in particular to a bearing detector. Background Art

[0002] Bearings are an important component in mechanical equipment. By setting bearings to support mechanical rotating bodies, the friction coefficient during movement can be reduced and the rotation accuracy can be ensured. The quality of bearings can directly affect the quality of mechanical equipment. However, in the production and manufacturing process of bearings, it is inevitable that there will be defects due to processing errors or other factors. Common defects of bearings include wear, cracks, and fractures, which are prone to appear in different positions of bearings.

[0003] In order to ensure the quality of bearings, it is usually necessary to inspect finished bearings to screen out bearings with defects. In the past, bearing inspection often relied on manual quality inspection, and the inspection accuracy was uneven. With the development of machine vision technology, bearing inspection has changed from manual inspection to image acquisition through image acquisition parts, and the detection of defects through computer image analysis, which has improved the inspection accuracy.

[0004] However, due to the unique structure of the bearing and the diversity of its defects, in order to ensure the detection rate of defects, the bearing detectors in the prior art often set up multiple light sources and cameras to illuminate the bearing from multiple angles and take photos from multiple positions to obtain qualified pictures for post-processing. This not only leads to the overall occupation of more space and low space utilization, but also leads to long detection time and low detection efficiency. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is to overcome the low space utilization and low detection efficiency of the existing bearing detector, and to provide a bearing detector with high space utilization and high detection efficiency.

[0006] The utility model provides a bearing detector, including a bearing flow channel, on which a detection station is arranged; an image acquisition unit, two image acquisition units are arranged, and the two image acquisition units are arranged on both sides of the detection station relatively along a first direction; each of the image acquisition units includes a light source mechanism and an image acquisition component; the light source mechanism includes a first light source assembly and a second light source assembly; the first light source assembly is arranged as a surface light source, and the first light source assembly is used to emit a first light ray to the bearing on the detection station, and a first through hole is provided on the first light source assembly; the second light source assembly is connected to the first light source assembly, and the second light source assembly is arranged as a spherical integrating light source, and the second light source assembly is used to emit a second light ray from the first through hole to the bearing on the detection station, and a second through hole is provided on the second light source assembly; the image acquisition component is arranged on a side of the light source mechanism away from the detection station along the first direction, and the image acquisition component is used to receive the first light ray and the second light ray reflected by the bearing on the detection station.

[0007] In one embodiment of the utility model, the first light source assembly includes a first shell, a first diffuser and a first LED; the first shell is provided with a first open cavity, the first open cavity is provided with a first mounting surface, the first diffuser is connected to the first shell, the first diffuser closes the opening of the first open cavity and forms a first accommodating space, the first LED is arranged in the first accommodating space and connected to the first mounting surface; wherein, a curve of the first diffuser and the first mounting surface on the first cross section is a first curve, the first curve is an arc curve symmetrical with respect to the first plane, the first curve includes a first arc segment, a second arc segment and a third arc segment which are smoothly closed and connected in sequence, the first arc segment and the third arc segment are both bent along the first direction toward the side away from the image acquisition component, and the second arc segment is bent along the first direction toward the side close to the image acquisition component; the first cross section is perpendicular to the second plane and the first plane respectively, and the normal vector of the second plane is parallel to the first direction.

[0008] In one embodiment of the utility model, the second light source assembly includes a second shell, a second diffuser plate and a second LED; the second shell is provided with a second open cavity, the second open cavity is provided with a second mounting surface, the second diffuser plate is connected to the second shell, the second diffuser plate closes the opening of the second open cavity and forms a second accommodating space, the second LED is arranged in the second accommodating space and connected to the second mounting surface; wherein, the curves of the second diffuser plate and the second mounting surface on the first cross section are respectively the second curve and the third curve, the second curve and the third curve are both arc curves symmetrical with respect to the third plane, the second curve includes a fourth arc segment, a fifth arc segment and a sixth arc segment which are smoothly closed and connected in sequence, the fourth arc segment and the sixth arc segment are both bent along the first direction toward the side away from the image acquisition component, the fifth arc segment is bent along the first direction toward the side close to the image acquisition component; the arc segment of the third curve is bent along the first direction toward the side close to the image acquisition component; the first cross section is perpendicular to the second plane and the third plane respectively, and the normal vector of the second plane is parallel to the first direction.

[0009] In an embodiment of the present invention, the first through hole and the second through hole are coaxially arranged, and the second through hole is arranged at the center of the second light source assembly.

[0010] In an embodiment of the present invention, the bearing flow channel is arranged obliquely.

[0011] In one embodiment of the utility model, the bearing flow channel includes a first flow channel section and a second flow channel section arranged at intervals, the inspection station is arranged between the first flow channel section and the second flow channel section, the inspection station is provided with a bearing separator that can be raised and lowered, the bearing separator is provided with a first arc portion and a second arc portion relative to each other, the first arc portion and the second arc portion are arranged in sequence along the extension direction of the bearing flow channel.

[0012] In an embodiment of the present invention, a third arc-shaped portion is further provided on the bearing separator, and two ends of the third arc-shaped portion are respectively connected to the first arc-shaped portion and the second arc-shaped portion.

[0013] In one embodiment of the utility model, a bearing positioning mechanism is further included, wherein the bearing positioning mechanism includes a positioning block that can be raised and lowered, the positioning block is arranged above the bearing flow channel, and a V-shaped positioning portion is provided on the positioning block for positioning the bearing through the V-shaped positioning portion.

[0014] In one embodiment of the utility model, the bearing positioning mechanism also includes two limit assemblies, and the two limit assemblies are respectively arranged on both sides of the detection station along the extension direction of the bearing flow channel; each of the limit assemblies includes a limit driving component and a limit component, and the limit component is connected to the driving end of the limit driving component.

[0015] In one embodiment of the utility model, the bearing flow channel includes a bearing support plate and a bearing limiter, and two bearing limiters are provided, and the two bearing limiters are respectively arranged on both sides of the bearing support plate; wherein, at least one of the bearing limiters can be relatively close to or relatively far away from the other bearing limiter.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The bearing detector described in the utility model, by arranging an image acquisition unit next to the bearing flow channel, can provide lighting and fill light for the bearing to be detected through a combined light source mechanism, so that the image acquisition component can obtain the corresponding image. The surface light source structure of the first light source component and the spherical integral light source structure of the second light source component can cooperate with each other. First, the two can provide lighting and fill light very well to meet the lighting requirements of different bearing defect detections. Secondly, the combined light source mechanism can effectively reduce the volume and improve space utilization. Finally, different detection lighting and fill light requirements can be met only by changing the brightness and darkness of the corresponding light source components. The bearing does not need to move at different workstations. Under the premise of ensuring the detection quality, the time wasted by moving the bearing between different workstations is effectively shortened, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein:

[0019] Figure 1 This is a structural schematic diagram of a bearing detector in a preferred embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of an image acquisition unit in a preferred embodiment of the utility model;

[0021] Figure 3 This is a schematic cross-sectional structural diagram of the first light source assembly in a preferred embodiment of the utility model;

[0022] Figure 4 This is a schematic cross-sectional view of the second light source assembly in a preferred embodiment of the utility model;

[0023] Figure 5It is a schematic diagram of the local structure of the bearing flow channel in the preferred embodiment of the utility model;

[0024] Figure 6 It is a structural schematic diagram of a bearing separator in a preferred embodiment of the utility model.

[0025] Description of the accompanying drawings: D1, first direction; 10, bearing flow channel; 101, first flow channel section; 102, detection station; 103, second flow channel section; 11, bearing support plate; 12, bearing limiter; 13, size adjustment member; 20, image acquisition unit; 21, first light source assembly; 211, first through hole; 212, first shell; 2121, first mounting surface; 213, first diffuser; 214, first LED; 215, first accommodating space; 22, second light source assembly; 221, second through hole; 222, second shell; 2221, second mounting surface; 223, second diffuser; 224, second L ED; 225, second accommodating space; 23, image acquisition component; 24, height adjustment pad; 301, first plane; 302, second plane; 303, third plane; 311, first arc segment; 312, second arc segment; 313, third arc segment; 321, fourth arc segment; 322, fifth arc segment; 323, sixth arc segment; 41, bearing separator; 411, first arc portion; 412, second arc portion; 413, third arc portion; 42, bearing limit cylinder; 50, bearing positioning mechanism; 51, positioning block; 511, V-shaped positioning portion; 52, positioning cylinder; 53, limit drive component; 54, limit component. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Reference Figure 1 and Figure 2 As shown, the utility model discloses a bearing detector, which includes a bearing flow channel 10 and an image acquisition unit 20.

[0028] The bearing flow channel 10 is used to transport the bearings. A testing station 102 is provided on the bearing flow channel 10. When the bearing is transported to the testing station 102, a corresponding test is performed.

[0029] The image acquisition unit 20 is used to acquire an image of the bearing located at the detection station 102, so as to analyze the acquired image in combination with a computer and the like to determine bearing defects. Specifically, two image acquisition units 20 are provided, and the two image acquisition units 20 are relatively arranged on both sides of the detection station 102 along the first direction D1, so as to simultaneously acquire images of the end faces on both sides of the bearing axial direction. Preferably, the first direction D1 is perpendicular to the extension direction of the bearing flow channel 10. Each image acquisition unit 20 includes a light source mechanism and an image acquisition component 23.

[0030] The light source mechanism includes a first light source assembly 21 and a second light source assembly 22. The first light source assembly 21 is configured as a surface light source, and the first light source assembly 21 is used to emit a first light beam to the bearing on the detection station 102. The surface structure of the light source belongs to the prior art, and its specific structure is not repeated. The first light source assembly 21 is provided with a first through hole 211. The second light source assembly 22 is connected to the first light source assembly 21; preferably, the two are connected by fasteners such as bolts. The second light source assembly 22 is configured as a spherical integral light source, and the second light source assembly 22 is used to emit a second light beam from the first through hole 211 to the bearing on the detection station 102. The spherical integral structure of the light source belongs to the prior art, and its specific structure is not repeated. The second light source assembly 22 is provided with a second through hole 221. The image acquisition component 23 is arranged on the side of the light source mechanism away from the detection station 102 along the first direction D1, and the image acquisition component 23 is used to receive the first light beam and the second light beam reflected by the bearing on the detection station 102. The image acquisition component 23 belongs to the prior art, and those skilled in the art can set a specific image acquisition component 23 according to actual needs, such as a planar array camera.

[0031] The bearing detector described in the utility model, when actually used, the bearing moves along the bearing flow channel 10. When a certain bearing moves to the detection station 102, an image is acquired by the image acquisition unit 20 located on both sides thereof. Specifically, first, the second light source assembly 22 lights up to provide illumination for the axial end face of the bearing; the second light emitted by the second light source assembly 22 passes through the first through hole 211 to illuminate the axial end face of the bearing, and after reflection, the second light passes through the first through hole 211 and the second through hole 221 in sequence, and is received by the image acquisition component 23 to obtain a first image. The axial end face defects of the bearing are analyzed by the first image in conjunction with a computer or the like. Subsequently, the first light source assembly 21 also lights up through timing control. With the cooperation of the first light source assembly 21 and the second light source assembly 22, illumination is provided for the bearing; the first light emitted by the first light source assembly 21 directly illuminates the bearing, and the second light emitted by the second light source assembly 22 passes through the first through hole 211 to illuminate the axial end face of the bearing. After reflection, the first light and the second light pass through the first through hole 211 and the second through hole 221 in sequence, and are received by the image acquisition component 23 to obtain a second image. The size of the bearing is analyzed by the second image in conjunction with a computer. Finally, the bearing that has completed the inspection continues to move along the bearing flow channel 10 to the subsequent station, and the next bearing moves to the inspection station 102 for inspection.

[0032] The bearing detector described in the utility model, by arranging an image acquisition unit 20 next to the bearing flow channel 10, can provide lighting and fill light for the bearing to be detected through a combined light source mechanism, so that the image acquisition component 23 can obtain the corresponding image. The surface light source structure of the first light source component 21 and the spherical integral light source structure of the second light source component 22 can cooperate with each other. First, the two can provide lighting and fill light very well to meet the lighting requirements of different bearing defect detections. Secondly, the combined light source mechanism can effectively reduce the volume and improve space utilization. Finally, different detection lighting and fill light requirements can be met only by changing the brightness and darkness of the corresponding light source components. The bearing does not need to move at different stations. Under the premise of ensuring the detection quality, the time wasted by moving the bearing between different stations is effectively shortened, thereby improving the detection efficiency.

[0033] Reference Figure 2 and Figure 3As shown, in the bearing detector described in the utility model, in some embodiments, the first light source assembly 21 includes a first shell 212, a first diffuser 213 and a first LED 214 (Light emitting diode). The first shell 212 is provided with a first opening cavity, and the first opening cavity is provided with a first mounting surface 2121 for mounting the first LED 214. The first diffuser 213 is connected to the first shell 212, and the first diffuser 213 closes the opening of the first opening cavity and forms a first accommodating space 215. The first LED 214 is arranged in the first accommodating space 215 and connected to the first mounting surface 2121.

[0034] The curves of the first diffuser plate 213 and the first mounting surface 2121 on the first section are the first curves, that is, the shapes of the curves of the two on the first section are the same. The first curve is an arc-shaped curve symmetrical with respect to the first plane 301, and the first curve includes a first arc segment 311, a second arc segment 312 and a third arc segment 313 that are smoothly closed and connected in sequence. The first arc segment 311 and the third arc segment 313 are both bent along the first direction D1 toward the side away from the image acquisition component 23, and the second arc segment 312 is bent along the first direction D1 toward the side close to the image acquisition component 23. Among them, the first section is perpendicular to the second plane 302 and the first plane 301 respectively, and the normal vector of the second plane 302 is parallel to the first direction D1. Preferably, the first plane 301 is parallel to the surface of the bearing support plate 11 of the bearing flow channel 10 that contacts the bearing. It should be noted that in the attached Figure 3 The figure shows a schematic diagram of a cross-sectional structure of the first light source component cut at the first cross section. In the figure, the first plane 301, the second plane 302 and the third plane 303 are indicated by dotted lines respectively; each curve is separated by a dotted line to indicate the corresponding arc segment. In the figure, the arc segment is only used for illustration to facilitate the technicians to understand the corresponding solution.

[0035] The axial end face of the bearing and its chamfer are usually not coplanar, and the chamfer is located at the edge of the bearing. Traditional surface light sources are usually planar structures. Due to the divergence of the light source of the surface light source and the size changes of bearings of different models, it is easy to cause the corresponding analysis algorithm to detect the bearing size incorrectly. To this end, the bearing detector described in the utility model optimizes the shape of the first diffuser plate 213 of the first light source assembly 21 and the installation angle of the first LED 214, and uses a first curve obtained by optimizing a polynomial curve to target the chamfer of the bearing, change the distance and angle of the first light reaching the chamfer and the end face, and achieve uniform illumination of the bearing. It can meet the size detection of bearings of different models, so that the surface brightness of bearings of different models remains uniform, thereby improving the detection accuracy and efficiency, and is particularly suitable for bearings with a size of 80mm to 100mm.

[0036] Reference Figure 2 and Figure 4 As shown, in the bearing detector of the utility model, in some embodiments, the second light source assembly 22 includes a second housing 222, a second diffusion plate 223 and a second LED 224. The second housing 222 is provided with a second opening cavity, and the second opening cavity is provided with a second mounting surface 2221 for mounting the second LED 224. The second diffusion plate 223 is connected to the second housing 222, and the second diffusion plate 223 closes the opening of the second opening cavity and forms a second accommodating space 225, and the second LED 224 is arranged in the second accommodating space 225 and connected to the second mounting surface 2221.

[0037] The curves of the second diffuser 223 and the second mounting surface 2221 on the first section are the second curve and the third curve, respectively. The second curve and the third curve are arc curves symmetrical with respect to the third plane 303. The second curve includes a fourth arc segment 321, a fifth arc segment 322 and a sixth arc segment 323 which are smoothly closed and connected in sequence. The fourth arc segment 321 and the sixth arc segment 323 are both bent along the first direction D1 toward the side away from the image acquisition component 23, and the fifth arc segment 322 is bent along the first direction D1 toward the side close to the image acquisition component 23. The arc segment of the third curve is bent along the first direction D1 toward the side close to the image acquisition component 23. Preferably, the arc segment of the third curve is a semi-ellipse; preferably, there is at least one point on the third curve, and the length of the line segment connecting the point to the two end points of the curve is greater than the length of the line segment connecting the two end points of the curve. Among them, the first section is perpendicular to the second plane 302 and the third plane 303 respectively, and the normal vector of the second plane 302 is parallel to the first direction D1. Preferably, the first plane 301 is parallel to the surface of the bearing support plate 11 of the bearing flow channel 10 that contacts the bearing. It should be noted that in the attached Figure 4 The figure shows a schematic diagram of a cross-sectional structure of the second light source component cut by the first cross section. In the figure, the second plane 302 and the third plane 303 are indicated by dotted lines respectively; the second curve is separated by a dotted line to indicate the corresponding arc segment. In the figure, the arc segment is only used for illustration to facilitate the technicians to understand the corresponding solution.

[0038] The traditional spherical light source has a large divergence angle. In actual lighting, a divergence angle that is too large will affect the lighting effect. Specifically, the brightness in the central area is usually high, while the brightness in the relatively outer area is low, resulting in uneven grayscale of the bearing image. The problem of uneven grayscale is particularly obvious when comparing images of different bearing sizes. Small-sized bearings have more grayscale than large-sized bearings, and may even be overexposed, affecting the detection quality. To this end, the bearing detector described in the utility model optimizes the shape of the second diffuser plate 223 of the second light source assembly 22 and the installation angle of the second LED 224, optimizes the light beam with an aspherical surface shape, changes the angle and propagation distance of the second light, so that it maintains uniform illumination on the axial end face of the bearing.

[0039] Reference Figure 2 As shown, in some embodiments of the bearing detector described in the utility model, the first through hole 211 and the second through hole 221 are coaxially arranged, and the second through hole 221 is arranged at the center of the second light source assembly 22. Preferably, when facing bearings of different sizes, the two through holes are coaxial with the axis of the bearing. By limiting this structure, coaxial lighting can be achieved, and uniform lighting can be effectively ensured. Preferably, the image acquisition unit can be detachably arranged on the height adjustment pad 24, and the height adjustment can be achieved by changing the height adjustment pad.

[0040] Reference Figure 5 As shown, in the bearing detector described in the utility model, in some embodiments, the bearing flow channel 10 is tilted. By tilting the bearing flow channel 10, it is possible to facilitate the bearing to slide along the flow channel by its own gravity when moving, thereby saving energy and reducing costs. Preferably, the inclination angle of the bearing flow channel 10 relative to the horizontal plane is 5 to 10 degrees. When the inclination angle is too small, less than 5 degrees, it is too gentle, the bearing movement speed is low, and the efficiency is reduced. When the inclination angle is too large, greater than 10 degrees, it is too steep. Although the bearing movement speed is increased, it also increases the difficulty of positioning the bearing. Those skilled in the art can set the inclination angle of the specific bearing flow channel 10 according to actual needs, such as 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, etc.

[0041] Further, see Figure 5 and Figure 6As shown, in the bearing detector described in the utility model, in some embodiments, the bearing flow channel 10 includes a first flow channel section 101 and a second flow channel section 103 arranged at intervals, and the detection station 102 is arranged between the first flow channel section 101 and the second flow channel section 103. A bearing separator 41 capable of lifting and lowering is provided on the detection station 102, and a first arc portion 411 and a second arc portion 412 are provided on the bearing separator 41. The first arc portion 411 and the second arc portion 412 are sequentially arranged along the extension direction of the bearing flow channel 10. Preferably, a bearing limit cylinder 42 is also provided, and the piston rod of the bearing limit cylinder 42 is connected to the bearing separator 41. Preferably, a guide column is also provided to provide guidance for lifting and lowering and improve structural stability. When performing detection, in order to ensure that a clear image is obtained, a bearing positioning mechanism 50 is usually provided. However, due to the inclination of the bearing flow channel 10, before the bearing positioning mechanism 50 positions the bearing, the bearing may be misaligned, shake, and other problems. To this end, by setting the bearing separator 41, before the bearing positioning mechanism 50 positions the bearing, the first arc portion 411 and the second arc portion 412 form a limit for the bearing along the extension direction of the bearing flow channel 10. When the limit is required, the bearing separator 41 rises and forms a limit separation; when the positioning is completed, the bearing separator 41 descends to avoid interfering with image acquisition. The arc-shaped structure of the two arc portions is particularly suitable for the circular structure of the bearing, effectively preventing displacement.

[0042] Further, see Figure 6 As shown, in some embodiments of the bearing detector of the utility model, a third arc portion 413 is further provided on the bearing separator 41, and the two ends of the third arc portion 413 are respectively connected to the first arc portion 411 and the second arc portion 412. By providing the third arc portion 413, the distance between the bearing separator 41 and the bearing to be detected can be further expanded under the premise that the bearing separator 41 is lowered, so that the light source mechanism can be used for lighting and supplementary lighting, thereby improving the detection accuracy.

[0043] Reference Figure 5 As shown, the bearing detector described in the utility model, in some embodiments, further includes a bearing positioning mechanism 50, the bearing positioning mechanism 50 includes a positioning block 51 that can be raised and lowered, the positioning block 51 is arranged above the bearing flow channel 10, and a V-shaped positioning portion 511 is provided on the positioning block 51, which is used to position the bearing through the V-shaped positioning portion 511. The structure is simple, and the bearing can be effectively positioned, and it can be adapted to bearings of different sizes. Preferably, the bearing positioning mechanism 50 also includes a positioning cylinder 52, and the piston rod of the positioning cylinder 52 is connected to the positioning block 51. After the bearing separator 41 limits the bearing, the positioning cylinder 52 drives the positioning block 51 to descend and positions the bearing through the V-shaped positioning portion 511, so as to perform image acquisition; after the acquisition is completed, the positioning cylinder 52 drives the positioning block 51 to rise.

[0044] Further, see Figure 5 As shown, in the bearing detector described in the utility model, in some embodiments, the bearing positioning mechanism 50 also includes two limit assemblies. Along the extension direction of the bearing flow channel 10, the two limit assemblies are respectively arranged on both sides of the detection station 102. Each limit assembly includes a limit drive component 53 and a limit component 54, and the limit component 54 is connected to the driving end of the limit drive component 53. Preferably, the limit drive component 53 is configured as a cylinder, and the limit component 54 is provided with an inclined surface to effectively separate the bearing to be detected and other bearings. When detection is required, the limit drive component 53 drives the limit component 54 to descend and limit the bearing; after the detection is completed, the limit drive component 53 drives the limit component 54 to rise.

[0045] Reference Figure 1 As shown, in some embodiments of the bearing detector described in the utility model, the bearing flow channel 10 includes a bearing support plate 11 and a bearing stopper 12, and two bearing stoppers 12 are provided, and the two bearing stoppers 12 are respectively arranged on both sides of the bearing support plate 11. Preferably, each bearing stopper 12 is provided with two parallel stopper rods, which can effectively form the limit of the bearing and avoid problems such as falling during the movement of the bearing. During the detection, the bearing moves on the bearing support plate 11, and its axial sides are limited by the bearing stoppers 12. Among them, at least one bearing stopper 12 can be relatively close to or relatively far away from another bearing stopper 12. By setting this structure, bearings of different axial sizes can be effectively adapted to improve versatility. Preferably, a size adjustment member 13 is provided to adjust the distance between the two bearing stoppers 12 at the same time. Preferably, the size adjustment member 13 is used to adjust the distance between the two bearing stoppers 12 through a threaded structure; of course, in some other embodiments, the distance can also be adjusted by a cylinder or a slide rail structure, which will not be repeated.

[0046] Working principle:

[0047] In the actual use of the bearing detector described in the utility model, the bearing to be detected moves along the bearing support plate 11 of the first flow channel section 101. When a certain bearing moves to the detection station 102, the bearing separator 41 and the bearing positioning mechanism 50 cooperate with each other to position and separate the bearing. After the positioning is completed, the image is acquired by the image acquisition unit 20 located on both sides.

[0048] Specifically, first, the second light source assembly 22 lights up to provide illumination for the axial end face of the bearing; the second light emitted by the second light source assembly 22 passes through the first through hole 211 to illuminate the axial end face of the bearing, and after reflection, the second light passes through the first through hole 211 and the second through hole 221 in sequence, and is received by the image acquisition component 23 to obtain a first image. The axial end face defects of the bearing are analyzed by the first image in conjunction with a computer or the like. Subsequently, the first light source assembly 21 also lights up through timing control. With the cooperation of the first light source assembly 21 and the second light source assembly 22, illumination is provided for the bearing; the first light emitted by the first light source assembly 21 directly illuminates the bearing, and the second light emitted by the second light source assembly 22 passes through the first through hole 211 to illuminate the axial end face of the bearing. After reflection, the first light and the second light pass through the first through hole 211 and the second through hole 221 in sequence, and are received by the image acquisition component 23 to obtain a second image. The size of the bearing is analyzed by the second image in conjunction with a computer or the like. Finally, the bearing that has completed the inspection continues to move along the second flow channel section 103 to the subsequent station, and at the same time, the next bearing moves to the inspection station 102 for inspection.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A bearing detector, characterized in that: include: A bearing flow channel, wherein a detection station is provided on the bearing flow channel; An image acquisition unit, wherein two image acquisition units are provided, and the two image acquisition units are arranged opposite to each other on both sides of the detection station along a first direction; each image acquisition unit comprises a light source mechanism and an image acquisition component; The light source mechanism comprises a first light source assembly and a second light source assembly; the first light source assembly is configured as a surface light source, the first light source assembly is used to emit a first light to the bearing on the detection station, and a first through hole is provided on the first light source assembly; The second light source assembly is connected to the first light source assembly, the second light source assembly is configured as a spherical integrating light source, the second light source assembly is configured to emit a second light from the first through hole to the bearing on the detection station, and a second through hole is provided on the second light source assembly; The image acquisition component is disposed along the first direction on a side of the light source mechanism away from the detection station, and the image acquisition component is used to receive the first light and the second light reflected by the bearing on the detection station.

2. The bearing detector according to claim 1, characterized in that: The first light source assembly includes a first housing, a first diffusion plate and a first LED; the first housing is provided with a first opening cavity, the first opening cavity is provided with a first mounting surface, the first diffusion plate is connected to the first housing, the first diffusion plate closes the opening of the first opening cavity and forms a first accommodation space, the first LED is arranged in the first accommodation space and connected to the first mounting surface; Among them, the curve of the first diffuser plate and the first mounting surface on the first cross-section is a first curve, the first curve is an arc curve symmetrical with respect to the first plane, the first curve includes a first arc segment, a second arc segment and a third arc segment which are smoothly closed and connected in sequence, the first arc segment and the third arc segment are both bent along the first direction toward the side away from the image acquisition component, and the second arc segment is bent along the first direction toward the side close to the image acquisition component; the first cross-section is perpendicular to the second plane and the first plane respectively, and the normal vector of the second plane is parallel to the first direction.

3. The bearing detector according to claim 1 or 2, characterized in that: The second light source assembly includes a second shell, a second diffusion plate and a second LED; the second shell is provided with a second opening cavity, the second opening cavity is provided with a second mounting surface, the second diffusion plate is connected to the second shell, the second diffusion plate closes the opening of the second opening cavity and forms a second accommodation space, the second LED is arranged in the second accommodation space and connected to the second mounting surface; Among them, the curves of the second diffuser plate and the second mounting surface on the first section are the second curve and the third curve respectively, the second curve and the third curve are both arc curves symmetrical with respect to the third plane, the second curve includes a fourth arc segment, a fifth arc segment and a sixth arc segment which are smoothly closed and connected in sequence, the fourth arc segment and the sixth arc segment are both bent along the first direction toward the side away from the image acquisition component, the fifth arc segment is bent along the first direction toward the side close to the image acquisition component; the arc segment of the third curve is bent along the first direction toward the side close to the image acquisition component; the first section is perpendicular to the second plane and the third plane respectively, and the normal vector of the second plane is parallel to the first direction.

4. The bearing detector according to claim 1, characterized in that: The first through hole and the second through hole are coaxially arranged, and the second through hole is arranged at the center of the second light source assembly.

5. The bearing detector according to claim 1, characterized in that: The bearing flow channel is arranged obliquely.

6. The bearing detector according to claim 5, characterized in that: The bearing flow channel includes a first flow channel section and a second flow channel section that are spaced apart. The inspection station is arranged between the first flow channel section and the second flow channel section. The inspection station is provided with a bearing separator that can be raised and lowered. The bearing separator is provided with a first arc portion and a second arc portion that are opposite to each other. The first arc portion and the second arc portion are arranged in sequence along the extension direction of the bearing flow channel.

7. The bearing detector according to claim 6, characterized in that: The bearing separator is further provided with a third arc portion, and two ends of the third arc portion are respectively connected to the first arc portion and the second arc portion.

8. The bearing detector according to claim 1, characterized in that: It also includes a bearing positioning mechanism, which includes a positioning block that can be raised and lowered. The positioning block is arranged above the bearing flow channel. A V-shaped positioning portion is provided on the positioning block to position the bearing through the V-shaped positioning portion.

9. The bearing detector according to claim 8, characterized in that: The bearing positioning mechanism also includes two limit assemblies, which are respectively arranged on both sides of the detection station along the extension direction of the bearing flow channel; each of the limit assemblies includes a limit driving component and a limit component, and the limit component is connected to the driving end of the limit driving component.

10. The bearing detector according to claim 1, characterized in that: The bearing flow channel includes a bearing support plate and a bearing limiter. Two bearing limiters are provided, and the two bearing limiters are respectively arranged on both sides of the bearing support plate; wherein at least one bearing limiter can be relatively close to or relatively far away from another bearing limiter.

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