Appearance inspection equipment

Abstract

This application relates to an appearance inspection device, which includes: a support platform and a turntable, which is disposed opposite to and rotatably connected to the support platform. The turntable has a feeding hole that extends through the turntable along its rotation axis, which is parallel to the arrangement direction of the turntable and the support platform. The feeding hole is used to assemble a light-transmitting workpiece to be inspected. A first detection component is disposed around at least a portion of the turntable along its circumference. The first detection component includes a first camera disposed on the side of the turntable away from the support platform, and a first light source and a second light source disposed between the turntable and the support platform. The first camera is configured to photograph the side of the workpiece to be inspected away from the support platform, and the first and second light sources are configured to irradiate light onto different areas of the workpiece to be inspected on the side closest to the support platform. In summary, the appearance inspection device in this embodiment allows for a larger area of ​​the workpiece to be illuminated by light, resulting in higher accuracy of the inspection results.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a visual inspection device. Background Technology

[0002] With the continuous advancement of technology, the quality requirements for various products in the production and daily life sectors are becoming increasingly stringent. Existing production technologies produce both qualified and defective products during the production process. The use of defective products reduces the quality of the final product. Workers typically select defective products from the numerous products produced for recycling.

[0003] In related technologies, inspection devices are used to detect appearance defects in manufactured products in order to identify defective products. Appearance defects include pits, cracks, sand particles, etc. The products being inspected can be transparent or opaque. However, the detection range of the inspection device is small. The inspection device can only detect defects in a small area of ​​the product to be inspected, resulting in low accuracy of the inspection results. Summary of the Invention

[0004] Therefore, it is necessary to provide an appearance inspection device to address the problem of low accuracy of current inspection results.

[0005] An appearance inspection device, comprising:

[0006] Support platform;

[0007] A turntable is disposed opposite to the support platform and is rotatably connected to the support platform; the turntable is provided with a feeding hole, which passes through the turntable along the rotation axis of the turntable. The rotation axis of the turntable is parallel to the arrangement direction of the turntable and the support platform. The feeding hole is used to assemble a light-transmitting workpiece to be inspected.

[0008] A first detection component is arranged around at least a portion of the turntable along its circumference. The first detection component includes a first camera located on the side of the turntable away from the support platform, and a first light source and a second light source located between the turntable and the support platform. The first camera is configured to photograph the side of the workpiece to be inspected away from the support platform, and the first light source and the second light source are configured to illuminate different areas on the side of the workpiece to be inspected closer to the support platform.

[0009] In one embodiment, the first light source includes a first annular light source, and the second light source includes a second annular light source, wherein the central axis of the first annular light source and the central axis of the second annular light source both coincide with the central axis of the discharge hole;

[0010] The inner diameter of the first annular light source is greater than zero, the outer diameter of the first annular light source is smaller than the diameter of the discharge hole, the inner diameter of the second annular light source is greater than or equal to the outer diameter of the first annular light source, and the inner diameter of the second annular light source is less than or equal to the inner diameter of the discharge hole.

[0011] In one embodiment, the first camera is spaced apart from the turntable;

[0012] The first detection component includes a first driving member, which is located on the side of the turntable away from the support platform. The movable end of the first driving member is connected to the first camera. The first driving member is configured to drive the first camera to move toward or away from the turntable.

[0013] In one embodiment, the appearance inspection device includes a second inspection component, and the first inspection component and the second inspection component are arranged circumferentially along the turntable;

[0014] The second detection component includes a second camera located on the side of the turntable away from the support platform and a third light source located on the side of the turntable close to the support platform. The second camera is configured to photograph the side of the workpiece to be inspected away from the support platform, and the third light source is configured to uniformly illuminate the side of the workpiece to be inspected close to the support platform.

[0015] In one embodiment, the side of the third light source closest to the turntable is a light-emitting surface, which is configured to emit light toward the workpiece to be inspected;

[0016] The second detection component includes a dimming element disposed between the light-emitting surface and the turntable. The dimming element is slidably connected to the third light source in a direction perpendicular to the axial direction of the feeding hole. The dimming element is configured to adjust the light emitted by the light-emitting surface so that the light emitted by the light-emitting surface is uniformly irradiated onto the workpiece to be inspected in the feeding hole in a direction parallel to the axial direction of the feeding hole.

[0017] In one embodiment, the second detection component includes a second driving member disposed on the side of the third light source opposite to the turntable;

[0018] The movable end of the second driving member is connected to the dimming member, and the second driving member is configured to drive the dimming member to enter or exit the gap between the light-emitting surface and the turntable in a direction perpendicular to the axial direction of the feeding hole.

[0019] In one embodiment, the second detection component includes a third drive member disposed on the side of the third light source opposite to the turntable;

[0020] The fixed end of the second driving member and the third light source are both connected to the movable end of the third driving member. The third driving member is configured to drive the second driving member and the third light source to move in a direction perpendicular to the movement direction of the dimming member and the axial direction of the feeding hole.

[0021] In one embodiment, the appearance inspection device includes a third inspection component, and the first inspection component and the third inspection component are arranged circumferentially along the turntable;

[0022] The third detection component includes a third camera disposed on the side of the turntable away from the support platform, a plurality of fourth light sources, and a plurality of light-blocking plates. The third camera is configured to photograph the side of the workpiece to be inspected away from the support platform. The plurality of fourth light sources are arranged around the outside of the third camera in a direction parallel to the rotation axis of the turntable. The plurality of fourth light sources are configured to illuminate the side of the workpiece to be inspected away from the support platform in different directions. The plurality of light-blocking plates are correspondingly disposed to the plurality of fourth light sources, and each light-blocking plate is configured to block the light reflected from the workpiece to be inspected from shining on the fourth light source corresponding to the light-blocking plate.

[0023] In one embodiment, the third detection component includes a fifth light source disposed on the side of the turntable near the support platform. The side of the fifth light source near the turntable is a light-emitting surface, which is configured to irradiate light onto the side of the workpiece to be inspected in the feeding hole near the support platform.

[0024] In one embodiment, the appearance inspection device includes a fourth inspection component, and the first inspection component and the fourth inspection component are arranged circumferentially along the turntable;

[0025] The fourth detection component includes a fourth camera disposed between the turntable and the support platform, and a sixth light source disposed on the side of the turntable away from the support platform. The sixth light source is spaced apart from the turntable. The fourth camera is configured to photograph the side of the workpiece to be inspected that is close to the support platform, and the sixth light source is configured to illuminate the side of the workpiece to be inspected that is away from the support platform.

[0026] In this embodiment of the appearance inspection equipment, the tester installs a light-transmitting workpiece into the feeding hole, and then drives the turntable to rotate relative to the support platform around its own rotation axis so that the workpiece passes through the first inspection component. During the process of the workpiece passing through the first inspection component, when the workpiece in the feeding hole on the turntable moves between the first camera and the first light source, the first light source shines light on the side of the workpiece closer to the support platform. The shone light penetrates the workpiece. The tester uses the first camera to take pictures of the area of ​​the workpiece that is shone by the light emitted by the first light source from the side of the workpiece away from the support platform in order to identify defects.

[0027] Similarly, when the workpiece to be inspected moves from the feed hole on the turntable to between the first camera and the second light source, the second light source shines light onto the side of the workpiece closest to the support platform. The shone light penetrates the workpiece, and the tester uses the first camera to photograph the area of ​​the workpiece illuminated by the light emitted by the second light source from the side of the workpiece away from the support platform to identify defects. Because the first and second light sources illuminate different areas on the side of the workpiece closest to the support platform, the first camera can perform defect detection on different areas of the workpiece from the side away from the support platform.

[0028] In summary, the appearance inspection device in this embodiment allows for a larger area of ​​the workpiece to be illuminated by light, enabling the first camera to detect defects in a larger area of ​​the workpiece, resulting in higher accuracy of the inspection results. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the appearance inspection device in one embodiment of this application.

[0031] Figure 2 for Figure 1 The appearance inspection device shown is viewed from direction A.

[0032] Figure 3 for Figure 1 The diagram shows a partial structural schematic of the appearance inspection equipment.

[0033] Figure 4 for Figure 1 The diagram shows the structure of the first inspection component in the appearance inspection device.

[0034] Figure 5 for Figure 4 A partial structural diagram of the first detection component is shown.

[0035] Figure 6 for Figure 1 The diagram shows the structure of the second inspection component in the appearance inspection device.

[0036] Figure 7 for Figure 6 A partial structural diagram of the second detection component is shown.

[0037] Figure 8 for Figure 1 The diagram shows the structure of the third inspection component in the appearance inspection equipment.

[0038] Figure 9 for Figure 1 The diagram shows the structure of the fourth inspection component in the appearance inspection equipment.

[0039] Figure 10 for Figure 1 The diagram shows the structure of the fifth inspection component in the appearance inspection equipment.

[0040] Figure 11 for Figure 1 The diagram shows the assembly of the transfer mechanism and cleaning components in the appearance inspection equipment.

[0041] Figure 12 for Figure 11 A schematic diagram of the transfer mechanism.

[0042] Figure 13 for Figure 11 A schematic diagram of the cleaning component.

[0043] Figure label:

[0044] 10 visual inspection devices;

[0045] The support platform is 100, the first light-emitting hole is 110, the second light-emitting hole is 120, the third light-emitting hole is 130, and the fourth light-emitting hole is 140.

[0046] Turntable 200, discharge hole 210;

[0047] First detection component 300, first camera 310, first light source 320, second light source 330, first driving component 340, first mounting base 350, first connecting frame 360, first connecting arm 361, second mounting base 370, second connecting frame 380, second connecting arm 381;

[0048] Second detection component 400, second camera 410, third light source 420, dimming component 430, sliding component 440, second driving component 450, third driving component 460, fourth driving component 470, third mounting base 480, fourth mounting base 490.

[0049] Third detection component 500, third camera 510, fourth light source 520, fifth light source 530, fifth drive component 540, sixth drive component 550, seventh drive component 560, fifth mounting base 570, sixth mounting base 580;

[0050] Fourth detection component 600, fourth camera 610, sixth light source 620, seventh mounting base 630, seventh light source 640, eighth mounting base 650, third connecting frame 660, third connecting arm 661, fourth connecting frame 670, fourth connecting arm 671;

[0051] Fifth detection component 700, fifth camera 710, eighth light source 720, ninth mounting base 730;

[0052] Feeding mechanism 800;

[0053] 900 feeding mechanism;

[0054] Transfer mechanism 1000, mounting bracket 1010, transfer platform 1020, eighth drive component 1030, holding component 1040, gripper 1041;

[0055] Cleaning component 1100, tenth mounting base 1110, first air blowing component 1120, second air blowing component 1130, base 1140, ninth drive component 1150, support frame 1160, first side frame 1161, second side frame 1162, support component 1170. Detailed Implementation

[0056] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0057] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0062] Please see Figures 1 to 4 , Figure 1 This illustration shows a structural schematic diagram of an appearance inspection device according to an embodiment of this application. An embodiment of the appearance inspection device 10 provided by this application includes: a support platform 100, a turntable 200, and a first inspection component 300. The turntable 200 is disposed opposite to and rotatably connected to the support platform 100. The turntable 200 is provided with a material feeding hole 210, which penetrates the turntable 200 along its rotation axis. The rotation axis of the turntable 200 is parallel to the arrangement direction of the turntable 200 and the support platform 100. The material feeding hole 210 is used to assemble light-transmitting materials. The workpiece to be inspected (not shown in the figure) is surrounded by a first detection component 300 along the circumference of the turntable 200, which is arranged around at least a portion of the turntable 200. The first detection component 300 includes a first camera located on the side of the turntable 200 away from the support platform 100, a first light source 320 and a second light source 330 located between the turntable 200 and the support platform 100. The first camera 310 is configured to photograph the side of the workpiece to be inspected away from the support platform 100, and the first light source 320 and the second light source 330 are configured to irradiate light onto different areas of the side of the workpiece to be inspected that is closer to the support platform 100.

[0063] In this embodiment of the appearance inspection device 10, the tester installs a light-transmitting workpiece to be inspected in the feeding hole 210, and then drives the turntable 200 to rotate relative to the support platform 100 around its own rotation axis so that the workpiece to be inspected passes through the first detection component 300. During the process of the workpiece to be inspected passing through the first detection component 300, when the workpiece to be inspected in the feeding hole 210 on the turntable 200 moves between the first camera 310 and the first light source 320, the first light source 320 shines light on the side of the workpiece to be inspected that is close to the support platform 100. The shone light penetrates the workpiece to be inspected. The tester uses the first camera 310 to take pictures of the area of ​​the workpiece to be inspected that is shone by the light emitted by the first light source 320 from the side of the workpiece to be inspected that is away from the support platform 100 in order to identify defects.

[0064] Similarly, when the workpiece to be inspected in the feeding hole 210 on the turntable 200 moves between the first camera 310 and the second light source 330, the second light source 330 illuminates the side of the workpiece to be inspected closest to the support platform 100. The illuminated light penetrates the workpiece. The tester uses the first camera 310 to photograph the area of ​​the workpiece to be inspected illuminated by the light emitted by the second light source 330 from the side of the workpiece to be inspected away from the support platform 100, in order to identify defects. Since the first light source 320 and the second light source 330 illuminate different areas on the side of the workpiece to be inspected closest to the support platform 100, the first camera 310 can perform defect detection on different areas of the workpiece to be inspected from the side of the workpiece to be inspected away from the support platform 100.

[0065] In summary, the appearance inspection device 10 in this embodiment allows for a larger area of ​​the workpiece to be illuminated by light, and the first camera 310 can perform defect detection on a larger area of ​​the workpiece. The appearance inspection device 10 has high accuracy in its detection results.

[0066] It should be noted that the positions of the first light source 320 and the second light source 330 can be set by the tester according to actual needs. For example, the first light source 320 can be set between the first camera 310 and the turntable 200, and the second light source 330 can be set between the turntable 200 and the support platform 100.

[0067] Please see Figures 3 to 5 In some embodiments, the first light source 320 includes a first annular light source, and the second light source 330 includes a second annular light source. The central axis of both the first and second annular light sources coincides with the central axis of the discharge hole 210. The inner diameter of the first annular light source is greater than zero, and the outer diameter of the first annular light source is smaller than the diameter of the discharge hole 210. The inner diameter of the second annular light source is greater than or equal to the outer diameter of the first annular light source, and the inner diameter of the second annular light source is less than or equal to the inner diameter of the discharge hole 210.

[0068] In this embodiment, during the process of the workpiece to be inspected passing through the first detection component 300, the operator can turn on the first ring light source and the second ring light source respectively to illuminate different areas on the side of the workpiece to be inspected that are close to the support platform 100, thereby ensuring that the first camera 310 can perform defect detection on different areas of the workpiece to be inspected from the side of the workpiece to be inspected that is away from the support platform 100.

[0069] In some embodiments, the support platform 100 is provided with a second light-emitting hole 120 on the side near the turntable 200. The second light-emitting hole 120 is arranged around at least a portion of the turntable 200 along the circumference of the turntable 200 and penetrates the support platform 100 along the arrangement direction of the turntable 200 and the support platform 100. The first light source 320 is located between the second light-emitting hole 120 and the turntable 200, and the second light source 330 is located inside the second light-emitting hole 120.

[0070] In some embodiments, the appearance inspection device 10 includes a second mounting base 370 and a second connecting frame 380. The second mounting base 370 is slidably connected to the side of the support platform 100 away from the turntable 200 in a direction perpendicular to the axial direction of the second light-emitting hole 120. The second connecting frame 380 is slidably connected to the second mounting base 370 in a direction parallel to the axial direction of the second light-emitting hole 120. A second connecting arm 381 is provided on the second connecting frame 380. The second light source 330 is slidably connected to the second connecting arm 381. The movement direction of the second mounting base 370 and the axial direction of the second light-emitting hole 120 are both intersected with the movement direction of the second light source 330.

[0071] In some embodiments, the appearance inspection device 10 includes a rotary drive module, the fixed end of which is disposed on the support platform 100, and the movable end of which is connected to the turntable 200. The rotary drive module is configured to drive the turntable 200 to rotate around its own rotation axis.

[0072] In some embodiments, the turntable 200 is provided with a plurality of feeding holes 210, the plurality of feeding holes 210 being arranged around the rotation axis of the turntable 200, and at least one feeding hole 210 is fitted with a light-transmitting workpiece to be inspected.

[0073] Please continue reading. Figures 3 to 5 In some embodiments, the first camera 310 is spaced apart from the turntable 200, and the first detection component 200 includes a first drive member 340. The first drive member 340 is located on the side of the turntable 200 away from the support platform 100. The movable end of the first drive member 340 is connected to the first camera 310. The first drive member 340 is configured to drive the first camera 310 to move toward or away from the turntable 200.

[0074] In this embodiment, the first camera 310 is driven by the first driving member 340 to move towards or away from the turntable 200, so that the distance between the first camera 310 and the workpiece to be inspected is adjustable, thereby ensuring that the workpiece to be inspected is always at the focal point of the first camera 310 and improving the clarity of the shooting results of the first camera 310.

[0075] In some embodiments, the first drive 340 is configured to drive the first camera 310 toward or away from the turntable 200 along the axial direction of the discharge hole 210.

[0076] In some embodiments, the first detection component 300 includes a first mounting base 350, which extends axially along the discharge hole 210. The first mounting base 350 is located on the side of the support platform 100 near the turntable 200 and is disposed around at least a portion of the turntable 200 along the circumference of the turntable 200. The fixed end of the first drive member 340 is connected to the first mounting base 350.

[0077] In some embodiments, the first detection component 300 includes a first connecting frame 360, which is slidably connected to the first mounting base 350 along the axial direction of the discharge hole 210. The first connecting frame 360 ​​is provided with a first connecting arm 361, and the first light source 320 is slidably connected to the first connecting arm 361 along a direction perpendicular to the axial direction of the discharge hole 210 on the side near the first camera 310.

[0078] Please see Figure 3 , Figure 6 as well as Figure 7 In some embodiments, the appearance inspection device 10 includes a second inspection component 400. The first inspection component 300 and the second inspection component 400 are arranged circumferentially along the turntable 200. The second inspection component 400 includes a second camera 410 disposed on the side of the turntable 200 away from the support platform 100 and a third light source 420 disposed on the side of the turntable 200 close to the support platform 100. The second camera 410 is configured to photograph the side of the workpiece to be inspected away from the support platform 100, and the third light source 420 is configured to uniformly illuminate the side of the workpiece to be inspected close to the support platform 100.

[0079] In this embodiment, the tester installs a light-transmitting workpiece into the feeding hole 210, and then drives the turntable 200 to rotate relative to the support platform 100 around its own rotation axis so that the workpiece passes through the second detection component 400. During the process of the workpiece passing through the second detection component 400, when the workpiece in the feeding hole 210 on the turntable 200 moves between the second camera 410 and the third light source 420, the third light source 420 evenly illuminates the side of the workpiece close to the support platform 100. The illuminated light penetrates the workpiece. The tester uses the second camera 410 to take pictures of the area of ​​the workpiece illuminated by the light emitted by the third light source 420 from the side of the workpiece away from the support platform 100 in order to identify defects.

[0080] In some embodiments, the third light source 420 includes a planar light source.

[0081] In some embodiments, a first light-emitting hole 110 is provided on the side of the support platform 100 near the turntable 200. The first light-emitting hole 110 and the second light-emitting hole 120 are arranged along the circumference of the turntable 200. The first light-emitting hole 110 penetrates the support platform 100 along the arrangement direction of the turntable 200 and the support platform 100. The third light source 420 is located on the side of the first light-emitting hole 110 away from the turntable 200. The light emitted by the third light source 420 passes through the first light-emitting hole 110 and illuminates the side of the workpiece to be inspected near the support platform 100.

[0082] Please continue reading. Figure 3 , Figure 6 as well as Figure 7 In some embodiments, the side of the third light source 420 near the turntable 200 is a light-emitting surface (not shown in the figure). The light-emitting surface is configured to emit light toward the workpiece to be inspected. The second detection component 400 includes a dimming element 430, which is disposed between the light-emitting surface and the turntable 200. The dimming element 430 is slidably connected to the third light source 420 in a direction perpendicular to the axial direction of the feeding hole 210. The dimming element 430 is configured to adjust the light emitted by the light-emitting surface so that the light emitted by the light-emitting surface is uniformly irradiated toward the workpiece to be inspected in the feeding hole 210 in a direction parallel to the axial direction of the feeding hole 210.

[0083] In this embodiment, since the dimming element 430 is slidably connected to the third light source 420 in a direction perpendicular to the axial direction of the feeding hole 210, the contact area between the dimming element 430 and the light-emitting surface is variable. The tester can increase or decrease the contact area between the dimming element 430 and the light-emitting surface by driving the dimming element 430 to move relative to the third light source 420 according to actual needs. When the dimming element 430 contacts different areas of the light-emitting surface, the light emitted from the contact area between the light-emitting surface and the dimming element 430 will penetrate the dimming element 430 and, under the adjustment of the dimming element 430, uniformly irradiate different target detection areas on the workpiece to be inspected in the feeding hole 210 in a direction parallel to the axial direction of the feeding hole 210. Finally, it penetrates the target detection areas on the workpiece to be inspected, and the orthographic projection of the target detection area of ​​the workpiece to be inspected on the light-emitting surface overlaps with the contact area between the light-emitting surface and the dimming element 430.

[0084] It should be added that, throughout the above process, the tester will use a second camera 410 to take pictures of the target detection area of ​​the workpiece from the side away from the support platform 100 in order to identify defects.

[0085] In some embodiments, the dimming element 430 may be a polarizing mirror or a diffuser.

[0086] Please continue reading. Figure 3 , Figure 6 as well as Figure 7In some embodiments, the second detection component 400 includes a second drive member 450, which is disposed on the side of the third light source 420 away from the turntable 200. The movable end of the second drive member 450 is connected to the dimming member 430. The second drive member 450 is configured to drive the dimming member 430 to enter or exit the gap between the light-emitting surface and the turntable 200 in a direction perpendicular to the axial direction of the feeding hole 210.

[0087] In this embodiment, by setting the second driving member 450 to drive the dimming member 430 to enter or exit the gap between the light-emitting surface and the turntable 200 in a direction perpendicular to the axial direction of the feeding hole 210, the contact area between the dimming member 430 and the light-emitting surface can be changed. This ensures that the light emitted from the contact area between the light-emitting surface and the dimming member 430 penetrates the dimming member 430 and, under the adjustment of the dimming member 430, is uniformly irradiated onto different target detection areas on the workpiece to be inspected in the feeding hole 210 in a direction parallel to the axial direction of the feeding hole 210. This makes it easier for the second camera 410 to take pictures of different target detection areas in the workpiece to be inspected from the side of the workpiece away from the support table 100.

[0088] In some embodiments, the second detection component 400 includes a slider 440, which is slidably connected to the third light source 420 in a direction perpendicular to the axial direction of the feeding hole 210. The movable end of the second drive component 450 is connected to the slider 440, and the dimming component 430 is connected to the slider 440. The second drive component 450 is configured to drive the slider 440 to move in a direction perpendicular to the axial direction of the feeding hole 210, so as to drive the dimming component 430 to enter or exit the gap between the light-emitting surface and the turntable 200 in a direction perpendicular to the axial direction of the feeding hole 210.

[0089] Please continue reading. Figure 3 , Figure 6 as well as Figure 7 In some embodiments, the second detection component 400 includes a third drive member 460 disposed on the side of the third light source 420 away from the turntable 200. The fixed end of the second drive member 450 and the third light source 420 are both connected to the movable end of the third drive member 460. The third drive member 460 is configured to drive the second drive member 450 and the third light source 420 to move in a direction perpendicular to the movement direction of the dimming member 430 and the axial direction of the feeding hole 210.

[0090] In this embodiment, the third driving member 460 drives the second driving member 450 and the third light source 420 to move relative to the workpiece to be inspected in the feeding hole 210 in a direction perpendicular to the movement direction of the dimming member 430 and the axial direction of the feeding hole 210.

[0091] In some embodiments, the second detection component 400 includes a fourth driving member 470 disposed on the side of the third light source 420 away from the turntable 200. The movable end of the fourth driving member 470 is connected to the third driving member 460. The fourth driving member 470 is configured to drive the third driving member 460 to move in a direction parallel to the movement direction of the dimming member 430.

[0092] In some embodiments, the second detection component 400 includes a third mounting base 480, which extends along the arrangement direction of the turntable 200 and the support platform 100. The third mounting base 480 is disposed on the side of the support platform 100 near the turntable 200. The third mounting base 480 and the first mounting base 350 are arranged circumferentially along the turntable 200. The second camera 410 is axially spaced from the turntable 200 along the discharge hole 210. The second camera 410 is slidably connected to the third mounting base 480 along the axial direction of the discharge hole 210.

[0093] In some embodiments, the second detection component 400 includes a linear drive module (not shown in the figure), the fixed end of which is disposed on the third mounting base 480, and the movable end of which is connected to the second camera 410. The linear drive module is configured to drive the second camera 410 to approach or move away from the turntable 200 in a direction parallel to the axial direction of the feed hole 210.

[0094] In some embodiments, the second detection component 400 includes a fourth mounting base 490, which is disposed on the side of the support platform 100 away from the turntable 200, and a fourth drive member 470 is slidably connected to the fourth mounting base 490 along the axial direction of the discharge hole 210.

[0095] Please see Figure 3 and Figure 8 In some embodiments, the appearance inspection device 10 includes a third inspection component 500. The first inspection component 300 and the third inspection component 500 are arranged circumferentially along the turntable 200. The third inspection component 500 includes a third camera 510 disposed on the side of the turntable 200 away from the support platform 100, a plurality of fourth light sources 520, and a plurality of light-blocking plates (not shown in the figure). The third camera 510 is configured to photograph the side of the workpiece to be inspected away from the support platform 100. The plurality of fourth light sources 520 are arranged around the outside of the third camera 510 in a direction parallel to the rotation axis of the turntable 200. The plurality of fourth light sources 520 are configured to irradiate light onto the side of the workpiece to be inspected away from the support platform 100 in different directions. The plurality of light-blocking plates are correspondingly disposed with the plurality of fourth light sources 520. Each light-blocking plate is configured to block the light reflected from the workpiece to be inspected from shining onto the fourth light source 520 corresponding to the light-blocking plate.

[0096] In this embodiment, multiple fourth light sources 520 are configured to illuminate the side of the workpiece to be inspected away from the support platform 100 in different directions, so that the third camera 510 can better capture images of the side of the workpiece to be inspected away from the support platform 100. During this process, multiple light-blocking plates are set corresponding to multiple fourth light sources 520, and each light-blocking plate blocks the light reflected from the workpiece to be inspected from shining on the fourth light source 520 corresponding to the light-blocking plate.

[0097] In some embodiments, the fourth light source 520 includes a line light source.

[0098] In some embodiments, the third camera 510 and the turntable 200 are spaced apart along the axial direction of the discharge hole 210. The third detection component 500 includes a fifth drive member 540, the movable end of which is connected to the third camera 510. The fifth drive member 540 is configured to drive the third camera 510 to approach or move away from the turntable 200 in a direction parallel to the axial direction of the discharge hole 210.

[0099] In some embodiments, the third detection component 500 includes a fifth mounting base 570, which extends along the arrangement direction of the turntable 200 and the support platform 100. The fifth mounting base 570 is disposed on the side of the support platform 100 near the turntable 200. The fifth mounting base 570 and the first mounting base 350 are arranged circumferentially along the turntable 200. The fixed end of the fifth driving member 540 is disposed on the fifth mounting base 570.

[0100] In some embodiments, each fourth light source 520 is rotatably connected to a fifth mounting base 570 and is configured to rotate about a direction parallel to the axial direction of the discharge hole 210.

[0101] In some embodiments, the third detection component 500 includes a plurality of connectors (not shown in the figure), the plurality of connectors being correspondingly disposed with a plurality of fourth light sources 520, each connector being rotatably connected to the fifth mounting base 570 about an axis parallel to the axial direction of the discharge hole 210, each fourth light source 520 being rotatably connected to the corresponding connector about an axis perpendicular to the axial direction of the discharge hole 210, and the rotation axes of each fourth light source 520 being intersecting.

[0102] In some embodiments, the third detection component 500 includes a plurality of sixth driving members 550, which are correspondingly arranged with a plurality of fourth light sources 520. The fixed end of each sixth driving member 550 is disposed on the corresponding fourth light source 520, and the movable end of each sixth driving member 550 is connected to the corresponding light-blocking plate. The sixth driving member 550 is configured to drive the corresponding light-blocking plate to rotate. The rotation axis of each fourth light source 520 and the rotation axis of the corresponding connecting member are both intersected with the rotation axis of the corresponding light-blocking plate.

[0103] Please see Figure 3 and Figure 9 In some embodiments, the third detection component 500 includes a fifth light source 530, which is located on the side of the turntable 200 near the support platform 100. The side of the fifth light source 530 near the turntable 200 is a light-emitting surface (not shown in the figure), and the light-emitting surface is configured to irradiate light toward the side of the workpiece to be inspected in the feeding hole 210 near the support platform 100.

[0104] In this embodiment, the tester installs a light-transmitting workpiece into the feeding hole 210, and then drives the turntable 200 to rotate relative to the support platform 100 around its own rotation axis so that the workpiece passes through the third detection component 500. During the process of the workpiece passing through the third detection component 500, when the workpiece in the feeding hole 210 on the turntable 200 moves between the third camera 510 and the fifth light source 530, the fifth light source 530 shines light on the side of the workpiece close to the support platform 100. The shone light penetrates the workpiece. The tester uses the third camera 510 to take pictures of the area of ​​the workpiece that is shone by the light emitted by the fifth light source 530 from the side of the workpiece away from the support platform 100 in order to identify defects.

[0105] In some embodiments, the fifth light source 530 includes a plate light source.

[0106] In some embodiments, a third light-emitting hole 130 is provided on the side of the support platform 100 near the turntable 200. The third light-emitting hole 130 penetrates the support platform 100 along the arrangement direction of the turntable 200 and the support platform 100. The third light-emitting hole 130 and the second light-emitting hole 120 are arranged circumferentially along the turntable 200. The fifth light source 530 is disposed on the side of the third light-emitting hole 130 away from the turntable 200.

[0107] In some embodiments, the third detection component 500 includes a seventh drive member 560, the movable end of which is connected to the fifth light source 530, and the seventh drive member 560 is configured to drive the fifth light source 530 to move in a direction perpendicular to the axial direction of the discharge hole 210.

[0108] In some embodiments, the third detection component 500 includes a sixth mounting base 580 located on the side of the support platform 100 away from the turntable 200, and the fixed end of the seventh drive member 560 is slidably connected to the sixth mounting base 580 in a direction parallel to the axial direction of the discharge hole 210.

[0109] Please see Figure 3 and Figure 9In some embodiments, the appearance inspection device 10 includes a fourth inspection component 600. The first inspection component 300 and the fourth inspection component 600 are arranged circumferentially along the turntable 200. The fourth inspection component 600 includes a fourth camera 610 disposed between the turntable 200 and the support platform 100, and a sixth light source 620 disposed on the side of the turntable 200 away from the support platform 100. The sixth light source 620 is spaced apart from the turntable 200. The fourth camera 610 is configured to photograph the side of the workpiece to be inspected that is close to the support platform 100, and the sixth light source 620 is configured to irradiate light toward the side of the workpiece to be inspected that is away from the support platform 100.

[0110] In this embodiment, the tester installs a light-transmitting workpiece into the feeding hole 210, and then drives the turntable 200 to rotate relative to the support platform 100 around its own rotation axis so that the workpiece passes through the fourth detection component 600. During the process of the workpiece passing through the fourth detection component 600, when the workpiece in the feeding hole 210 on the turntable 200 moves between the fourth camera 610 and the sixth light source 620, the sixth light source 620 irradiates light towards the side of the workpiece away from the support platform 100. The irradiated light penetrates the workpiece. The tester uses the fourth camera 610 to take pictures of the area of ​​the workpiece that is irradiated by the light emitted by the sixth light source 620 from the side of the workpiece that is close to the support platform 100 in order to identify defects.

[0111] In some embodiments, a fourth light-emitting hole 140 is provided on the side of the support platform 100 near the turntable 200. The fourth light-emitting hole 140 penetrates the support platform 100 along the arrangement direction of the turntable 200 and the support platform 100. The first light-emitting hole 110, the second light-emitting hole 120, the third light-emitting hole 130 and the fourth light-emitting hole 140 are arranged circumferentially along the turntable 200. The light irradiated by the sixth light source 620 toward the side of the workpiece to be inspected away from the support platform 100 penetrates the workpiece to be inspected and enters the fourth light-emitting hole 140. The fourth camera 610 is disposed on the side of the fourth light-emitting hole 140 away from the turntable 200.

[0112] In some embodiments, the fourth camera 610 is slidably connected to the support platform 100 in a direction parallel to the axial direction of the discharge hole 210.

[0113] In some embodiments, the fourth detection component 600 includes a seventh mounting base 630, which is disposed on the side of the support platform 100 away from the turntable 200, and the fourth camera 610 is slidably connected to the seventh mounting base 630 in a direction parallel to the axial direction of the discharge hole 210.

[0114] In some embodiments, the fourth detection component 600 includes a linear driver, the fixed end of which is disposed on the seventh mounting base 630, and the movable end of which is connected to the fourth camera 610. The linear driver is configured to drive the fourth camera 610 to move in a direction parallel to the axial direction of the discharge hole 210.

[0115] In some embodiments, the sixth light source 620 includes a third annular light source, the central axis of which coincides with the central axis of the discharge hole 210, the inner diameter of the third annular light source is greater than or equal to 0, and the outer diameter of the third annular light source is smaller than the aperture of the discharge hole 210.

[0116] In some embodiments, the fourth detection component 600 includes an eighth mounting base 650, which extends along the arrangement direction of the turntable 200 and the support platform 100. The eighth mounting base 650 is disposed on the side of the support platform 100 near the turntable 200. The eighth mounting base 650 and the fifth mounting base 570 are arranged circumferentially along the turntable 200. The third annular light source is axially spaced from the turntable 200 along the discharge hole 210. The third annular light source is slidably connected to the eighth mounting base 650 in a direction parallel to the axial direction of the discharge hole 210.

[0117] In some embodiments, the fourth detection component 600 includes a third connecting frame 660, which is located on the side of the turntable 200 away from the support platform 100. The third connecting frame 660 is slidably connected to the eighth mounting base 650 in a direction parallel to the axial direction of the discharge hole 210. The sixth light source 620 is connected to the third connecting frame 660.

[0118] In some embodiments, the third connecting frame 660 includes a third connecting arm 661, and the sixth light source 620 is slidably connected to the third connecting arm 661 in a direction perpendicular to the axial direction of the discharge hole 210.

[0119] In some embodiments, the third connecting arm 661 includes a seventh light source 640, and the sixth light source 620 and the seventh light source 640 are respectively configured to irradiate light onto different areas on the side of the workpiece to be inspected away from the support stage 100.

[0120] In some embodiments, the seventh light source 640 includes a fourth ring light source, the central axis of which coincides with the central axis of the third ring light source, the inner diameter of the fourth ring light source is greater than or equal to the outer diameter of the third ring light source, and the outer diameter of the fourth ring light source is less than or equal to the diameter of the discharge hole 210.

[0121] In some embodiments, the fourth detection component 600 includes a fourth connecting frame 670, which is located on the side of the turntable 200 away from the support platform 100. The fourth connecting frame 670 is slidably connected to the eighth mounting base 650 in a direction parallel to the axial direction of the discharge hole 210. The seventh light source 640 is connected to the fourth connecting frame 670.

[0122] In some embodiments, the fourth connecting frame 670 is provided with a fourth connecting arm 671, and the seventh light source 640 is slidably connected to the fourth connecting arm 671 in a direction perpendicular to the axial direction of the discharge hole 210.

[0123] In other embodiments, the second detection component 400, the first detection component 300, the third detection component 500, and the fourth detection component 600 are arranged sequentially around a portion of the turntable 200 along the circumference of the turntable 200.

[0124] In some embodiments, the appearance inspection device 10 includes a fifth inspection component 700, which is arranged with the fourth inspection component 600 in a direction perpendicular to the axial direction of the discharge hole 210.

[0125] In other embodiments, the fifth detection component 700 and the support platform 100 are spaced apart, and the arrangement direction of the fifth detection component 700 and the support platform 100 is parallel to the arrangement direction of the fifth detection component 700 and the fourth detection component 600. The fifth detection component 700 includes an eighth light source 720 and a fifth camera 710 arranged sequentially along the axial direction of the discharge hole 210. The eighth light source 720 is configured to emit light in a direction away from the fifth camera 710.

[0126] In some embodiments, the fifth detection component 700 includes a ninth mounting base 730, the ninth mounting base 730 and the support platform 100 are arranged in a direction perpendicular to the axial direction of the discharge hole 210, and the eighth light source 720 and the fifth camera 710 are slidably connected to the ninth mounting base 730 in a direction parallel to the axial direction of the discharge hole 210.

[0127] In some embodiments, the appearance inspection device 10 includes a feeding mechanism 800 and a discharging mechanism 900. The discharging mechanism 900 is located on the side of the fifth inspection component 700 away from the fourth inspection component 600. The discharging mechanism 900 is used to receive the inspected workpiece. The feeding mechanism 800 and the discharging mechanism 900 are arranged at intervals. The feeding mechanism 800 is used to provide the workpiece to be inspected. The axial direction of the discharge hole 210 and the arrangement direction of the fifth inspection component 700 and the fourth inspection component 600 are intersected with the arrangement direction of the feeding mechanism 800 and the discharging mechanism 900.

[0128] Please see Figure 1 and Figure 2 ,as well as Figures 11 to 13In some embodiments, the appearance inspection device 10 includes a transfer mechanism 1000 located between the loading mechanism 800 and the unloading mechanism 900. The transfer mechanism 1000 is configured to transport the workpiece to be inspected in the loading mechanism 800 to the discharge hole 210 of the turntable 200, and after the workpiece to be inspected passes through the fourth inspection component 600, remove the workpiece to be inspected from the discharge hole 210, transport the workpiece to be inspected through the fifth inspection component 700, and place the workpiece to be inspected into the unloading mechanism 900.

[0129] In some embodiments, the transfer mechanism 1000 includes a mounting frame 1010 and two holding components 1040. The mounting frame 1010 is located between the loading mechanism 800 and the unloading mechanism 900. Of the two holding components 1040, one holding component 1040 is located on the side of the mounting frame 1010 closer to the loading mechanism 800 and is slidably connected to the mounting frame 1010 in a direction parallel to the arrangement direction of the fifth detection component 700 and the fourth detection component 600, so as to hold the components in the loading mechanism 800... The workpiece to be inspected is transported to the discharge hole 210 of the turntable 200; of the two holding components 1040, the other holding component 1040 is located on the side of the mounting frame 1010 near the unloading mechanism 900, and is slidably connected to the mounting frame 1010 in a direction parallel to the arrangement direction of the fifth detection component 700 and the fourth detection component 600, so that after the workpiece to be inspected passes the fourth detection component 600, the workpiece to be inspected is removed from the discharge hole 210, transported to the fifth detection component 700, and placed into the unloading mechanism 900.

[0130] In some embodiments, the transfer mechanism 1000 includes two transfer platforms 1020, each of which is correspondingly configured with two support components 1040. Each support component 1040 is connected to a corresponding transfer platform and is slidably connected to the mounting bracket 1010 through the corresponding transfer platform 1020.

[0131] In some embodiments, each holding component 1040 includes two grippers 1041, which are spaced apart along a direction parallel to the arrangement direction of the fifth detection component 700 and the fourth detection component 600. Each gripper 1041 is configured to be slidably connected to the corresponding transfer platform 1020 along a direction parallel to the arrangement direction of the fifth detection component 700 and the fourth detection component 600.

[0132] In some embodiments, each transfer platform 1020 is provided with an eighth drive member 1030. The fixed end of the eighth drive member 1030 is connected to the corresponding transfer platform 1020, and the movable end of the eighth drive member 1030 is connected to the corresponding clamping component 1040. The eighth drive member 1030 is configured to drive the two grippers 1041 in the corresponding clamping component 1040 to move closer or further away from each other.

[0133] In some embodiments, the appearance inspection device 10 includes a cleaning component 1100 located between the loading mechanism 800 and the support table 100. The cleaning component 1100 is configured to remove dust from the outer surface of the workpiece to be inspected during the process of the transfer mechanism 1000 transporting the workpiece to be inspected in the loading mechanism 800 into the discharge hole 210 of the turntable 200.

[0134] In some embodiments, the cleaning assembly 1100 includes a tenth mounting base 1110, a first air blowing member 1120 and a second air blowing member 1130. The tenth mounting base 1110 is located between the feeding mechanism 800 and the support platform 100. The first air blowing member 1120 and the second air blowing member 1130 are arranged at intervals on the tenth mounting base 1110 in a direction parallel to the axial direction of the discharge hole 210. The first air blowing member 1120 is configured to blow air toward one side of the workpiece to be inspected along the axial direction of the discharge hole 210, and the second air blowing member 1130 is configured to blow air toward the other side of the workpiece to be inspected along the axial direction of the discharge hole 210.

[0135] In some embodiments, the first air blowing member 1120 is configured to be slidably connected to the tenth mounting base 1110 in a direction parallel to the axial direction of the discharge hole 210, and the first air blowing member 1120 blows air in a direction away from the second air blowing member 1130; the second air blowing member 1130 is configured to be slidably connected to the tenth mounting base 1110 in a direction parallel to the axial direction of the discharge hole 210, and the second air blowing member 1130 blows air in a direction away from the first air blowing member 1120.

[0136] In some embodiments, the cleaning component 1100 includes a base 1140 and a holding frame 1160. The base 1140 is connected to the tenth mounting base 1110. The holding frame 1160 is slidably connected to the base 1140 along the arrangement direction of the feeding mechanism 800 and the unloading mechanism 900. The transfer mechanism 1000 is configured to transport the workpiece to be inspected in the feeding mechanism 800 into the holding frame 1160, and after the dust on the surface of the workpiece to be inspected is removed, transfer the workpiece to be inspected into the discharge hole 210 of the turntable 200.

[0137] In some embodiments, the cleaning component 1100 includes a ninth drive member 1150, the fixed end of the ninth drive member 1150 is disposed on the base 1140, the movable end of the ninth drive member 1150 is connected to the support frame 1160, and the ninth drive member 1150 is configured to drive the support frame 1160 to move along the arrangement direction of the feeding mechanism 800 and the unloading mechanism 900.

[0138] In some embodiments, the support frame 1160 includes two first frame borders 1161 and two second frame borders 1162. The first frame borders 1161 extend along the arrangement direction of the fifth detection component 700 and the fourth detection component 600. The two first frame borders 1161 are arranged at intervals along the arrangement direction of the feeding mechanism 800 and the unloading mechanism 900. The second frame borders 1162 extend along the arrangement direction of the feeding mechanism 800 and the unloading mechanism 900. The two second frame borders 1162 are arranged at intervals between the two first frame borders 1161 along the arrangement direction of the fifth detection component 700 and the fourth detection component 600. Both ends of each second frame border 1162 are correspondingly connected to the two first frame borders 1161. The movable end of the ninth drive member 1150 is connected to the first frame border 1161 or the second frame border 1162.

[0139] In some embodiments, the cleaning assembly 1100 includes two clamping members 1170, which are spaced apart along the extension direction of the first frame 1161 and are correspondingly arranged with two second frames 1162. Each clamping member 1170 is slidably connected to the corresponding second frame 1162 along the extension direction of the first frame 1161, and the workpiece to be inspected is clamped between the two clamping members 1170.

[0140] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0141] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An appearance inspection device, characterized in that, include: Support platform; A turntable is disposed opposite to the support platform and is rotatably connected to the support platform; the turntable is provided with a feeding hole, which passes through the turntable along the rotation axis of the turntable. The rotation axis of the turntable is parallel to the arrangement direction of the turntable and the support platform. The feeding hole is used to assemble a light-transmitting workpiece to be inspected. A first detection component is arranged around at least a portion of the turntable along its circumference. The first detection component includes a first camera located on the side of the turntable away from the support platform, a first light source and a second light source located between the turntable and the support platform. The first camera is configured to photograph the side of the workpiece to be inspected away from the support platform, and the first light source and the second light source are configured to irradiate light onto different areas of the side of the workpiece to be inspected closer to the support platform. The first light source includes a first annular light source, and the second light source includes a second annular light source. The central axis of both the first annular light source and the second annular light source coincides with the central axis of the discharge hole. The inner diameter of the first annular light source is greater than zero, the outer diameter of the first annular light source is smaller than the diameter of the discharge hole, the inner diameter of the second annular light source is greater than or equal to the outer diameter of the first annular light source, and the inner diameter of the second annular light source is less than or equal to the inner diameter of the discharge hole. The appearance inspection equipment includes a second inspection component, and the first inspection component and the second inspection component are arranged along the circumference of the turntable; The second detection component includes a second camera located on the side of the turntable away from the support platform and a third light source located on the side of the turntable close to the support platform. The second camera is configured to photograph the side of the workpiece to be inspected away from the support platform, and the third light source is configured to uniformly illuminate the side of the workpiece to be inspected close to the support platform. The appearance inspection equipment includes a third inspection component, and the first inspection component and the third inspection component are arranged along the circumference of the turntable; The third detection component includes a third camera disposed on the side of the turntable away from the support platform, a plurality of fourth light sources, and a plurality of light-blocking plates. The third camera is configured to photograph the side of the workpiece to be inspected away from the support platform. The plurality of fourth light sources are arranged around the outside of the third camera in a direction parallel to the rotation axis of the turntable. The plurality of fourth light sources are configured to illuminate the side of the workpiece to be inspected away from the support platform in different directions. The plurality of light-blocking plates are correspondingly disposed to the plurality of fourth light sources, and each light-blocking plate is configured to block the light reflected from the workpiece to be inspected from shining on the fourth light source corresponding to the light-blocking plate. The appearance inspection device includes a fourth inspection component, and the first inspection component and the fourth inspection component are arranged along the circumference of the turntable; The fourth detection component includes a fourth camera disposed between the turntable and the support platform, and a sixth light source disposed on the side of the turntable away from the support platform. The sixth light source is spaced apart from the turntable. The fourth camera is configured to photograph the side of the workpiece to be inspected that is close to the support platform, and the sixth light source is configured to illuminate the side of the workpiece to be inspected that is away from the support platform.

2. The appearance inspection device according to claim 1, characterized in that, The first camera is spaced apart from the turntable; The first detection component includes a first driving member, which is located on the side of the turntable away from the support platform. The movable end of the first driving member is connected to the first camera. The first driving member is configured to drive the first camera to move toward or away from the turntable.

3. The appearance inspection device according to claim 1, characterized in that, The side of the third light source closest to the turntable is the light-emitting surface, which is configured to emit light toward the workpiece to be inspected; The second detection component includes a dimming element disposed between the light-emitting surface and the turntable. The dimming element is slidably connected to the third light source in a direction perpendicular to the axial direction of the feeding hole. The dimming element is configured to adjust the light emitted by the light-emitting surface so that the light emitted by the light-emitting surface is uniformly irradiated onto the workpiece to be inspected in the feeding hole in a direction parallel to the axial direction of the feeding hole.

4. The appearance inspection device according to claim 3, characterized in that, The second detection component includes a second driving member, which is located on the side of the third light source away from the turntable; The movable end of the second driving member is connected to the dimming member, and the second driving member is configured to drive the dimming member to enter or exit the gap between the light-emitting surface and the turntable in a direction perpendicular to the axial direction of the feeding hole.

5. The appearance inspection device according to claim 4, characterized in that, The second detection component includes a third driving member disposed on the side of the third light source opposite to the turntable; The fixed end of the second driving member and the third light source are both connected to the movable end of the third driving member. The third driving member is configured to drive the second driving member and the third light source to move in a direction perpendicular to the movement direction of the dimming member and the axial direction of the feeding hole.

6. The appearance inspection device according to claim 1, characterized in that, The third detection component includes a fifth light source, which is located on the side of the turntable near the support platform. The side of the fifth light source near the turntable is a light-emitting surface, which is configured to irradiate light onto the side of the workpiece to be inspected in the feeding hole near the support platform.

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