Optical screening machine for product appearance defect detection

Abstract

The invention discloses an optical screening machine for product appearance defect detection, and particularly relates to the field of product appearance detection.The optical screening machine comprises an upper cabinet body, a middle cabinet body and a lower cabinet body, a supporting plate is arranged between the upper cabinet body and the middle cabinet body, a speed reducer body is arranged in the middle of the supporting plate, and the power end of the speed reducer body is connected with a detection disc; a first detection device and a second detection device are arranged on the side wall of the detection disc, the first detection device and the second detection device arranged in the upper cabinet body are used for detecting products in all directions, the first detection device moves through a first sleeve, a first movable part, a second sleeve, a second movable part, a third sleeve and a third movable part, and the first detection device and the second detection device are arranged in the upper cabinet body. The first optical detector faces the side wall of the product so as to detect the side wall of the product, the second detection device drives the second optical detector to face the upper portion and the lower portion of the product through the lifting assembly and the adjusting assembly, and the first detection device and the second detection device can conduct all-around detection on the passing product.

Description

Technical Field

[0001] The present invention relates to the field of product appearance detection, and more specifically, to an optical screening machine for detecting product appearance defects. Background Art

[0002] Optical screening machines are advanced equipment that use optical imaging technology, machine vision technology and image processing technology to automatically identify, measure, screen and classify materials. They are widely used in food processing, pharmaceutical manufacturing, chemical industry and electronic manufacturing. Existing optical screening machines include several independently set detection cameras, which perform 360-degree all-round and high-precision detection of the products to be inspected.

[0003] After searching, the Chinese patent with publication number CN119146184A discloses an optical screening machine, including a frame and a working platform, the working platform is used to install the equipment required for detection, and the optical screening machine also includes a vibration reduction device, which is fixed on the frame and includes a plurality of vibration dampers. The working platform is connected to each vibration damper to reduce the vibration transmitted from the frame to the working platform. By adding the vibration reduction device between the working platform and the frame of the optical screening machine, most of the vibrations transmitted by the frame and generated by the equipment itself are absorbed and weakened by the vibration reduction device, which can effectively reduce the vibration of the working platform.

[0004] Regarding the above technology, the inventor believes that some products to be inspected are irregular in shape and usually require more inspection cameras to ensure the inspection quality. However, the space for installing inspection cameras in the optical screening machine is limited. Therefore, multiple optical screening machines are needed to inspect the products to be inspected, which is inefficient and costly. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In order to overcome the above defects of the prior art, an embodiment of the present invention provides an optical screening machine for product appearance defect detection to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an optical screening machine for product appearance defect detection, comprising an upper cabinet, a middle cabinet and a lower cabinet, characterized in that: the upper cabinet, the middle cabinet and the lower cabinet are connected to each other to form a detection cabinet, a support cabinet is provided on one side of the detection cabinet, a feeding device is provided on the top of the support cabinet, and the feeding device passes through a cavity opened in the middle cabinet and is connected to a detection plate;

[0009] A support plate is provided between the upper cabinet and the middle cabinet, a reducer body is provided in the middle part of the support plate, a power end of the reducer body is connected to the detection plate, and detection equipment 1 and detection equipment 2 are respectively provided on the side walls of the detection plate;

[0010] The detection device 1 includes a base arranged on the surface of the support plate, and sleeve 1, movable part 1, sleeve 2, movable part 2, sleeve 3 and movable part 3 which are connected to each other are arranged above the base, and an optical detector 1 is arranged at one end of the movable part 3 away from the sleeve 3;

[0011] The second detection equipment includes a fixed plate arranged on the inner wall of the upper cabinet, two groups of fixed blocks are arranged on the surface of the fixed plate, and fixed columns and screw rods are arranged between the two groups of fixed blocks, sliders are arranged on the surfaces of the fixed columns and the screw rods, and threaded holes for threaded connection to the screw rods are opened inside the sliders, a carrying plate is arranged on one side of the slider, and an adjustment component is arranged on the top of the carrying plate, and the adjustment component is connected to the second optical detector.

[0012] In a preferred embodiment, a reducer support is provided at the middle portion of the top end of the support plate, and the reducer body is provided inside the reducer support.

[0013] In a preferred embodiment, connecting grooves are provided at both ends of the movable part one and the movable part two, a connecting groove is provided at one end of the movable part three, one end of the sleeve one is movably connected to the base, and the other end of the sleeve one is sleeved inside the connecting groove provided by the movable part one, a sleeve two is provided between the connecting grooves provided by the movable part one and the movable part two, and a sleeve three is provided between the connecting grooves provided by the movable part two and the movable part three.

[0014] In a preferred embodiment, two groups of through holes are opened on the surface of the fixed block located below, and bearings are arranged inside each group of through holes. A driving device 1 is arranged on the surface of the fixed plate, and the power end of the driving device 1 is connected to the corresponding bearing inner ring, and the other end of the bearing inner ring is connected to a power wheel, a force wheel is arranged on one side of the power wheel, and a conductive belt is sleeved between the force wheel and the power wheel, the top end of the force wheel is connected to another group of bearing inner rings, and the top end of the bearing inner ring is connected to the screw.

[0015] In a preferred embodiment, a through hole is provided in the middle part of the rotating disk, and a second driving device is arranged at the bottom of the rotating disk. The power end of the second driving device passes through the through hole and is connected to a workbench. A rack is movably provided on the surface of the workbench, and one end of the rack is connected to a movable plate. A push-pull device is provided on one side of the workbench, and the power end of the push-pull device is connected to the movable plate.

[0016] In a preferred embodiment, a carrier is provided in the middle part of the workbench, and two groups of through holes are opened on the surface of the carrier, and a rotating shaft 1 and a rotating shaft 2 are respectively provided inside the two groups of through holes, a gear is provided at one end of the rotating shaft 1, and the gear is meshed with the rack, a rotating wheel 1 is provided at the other end of the rotating shaft 1, and a rotating wheel 2 and a rotating wheel 3 are respectively provided at both ends of the rotating shaft 2, and a rotating wheel 4 is movably provided on the side corresponding to the workbench and the rotating wheel 3, wherein a transmission belt 1 is sleeved between the rotating wheel 1 and the rotating wheel 2, and a transmission belt 2 is sleeved between the rotating wheel 3 and the rotating wheel 4.

[0017] In a preferred embodiment, a slide rail is provided at the top of the workbench, a sliding member is movably provided on the surface of the slide rail, and a connecting rod is provided between the sliding member and the second surface of the transmission belt, a driving device three is provided at the top of the sliding member, and an optical detector two is provided at the power end of the driving device three.

[0018] In a preferred embodiment, a plurality of groups of threaded holes are provided on the surface of the fixing plate, and corresponding threaded holes are provided on the inner wall of the upper cabinet at positions corresponding to the threaded holes, and bolts are provided between every two groups of corresponding threaded holes.

[0019] In a preferred embodiment, a cavity is formed at the bottom of the middle cabinet, a drawer cabinet is disposed inside the cavity, and a control keyboard is disposed inside the drawer cabinet.

[0020] In a preferred embodiment, locking universal wheels are provided at four ends of the bottom of the lower cabinet and the bottom of the supporting cabinet.

[0021] (III) Beneficial effects

[0022] The present invention provides an optical screening machine for product appearance defect detection, which has the following beneficial effects:

[0023] The present invention conveys the product to the surface of the inspection disk through the feeding equipment, and drives the inspection disk to rotate through the reducer body so as to inspect the product. The present invention performs all-round inspection on the product through the inspection device 1 and the inspection device 2 arranged inside the upper cabinet, wherein the inspection device 1 is arranged through the sleeve 1, movable part 1, sleeve 2, movable part 2, sleeve 3 and movable part 3 that move with each other, and directs the optical detector 1 toward the side wall of the product to inspect the side wall of the product. The inspection device 2 drives the optical detector 2 toward the top and bottom of the product through the lifting component and the adjustment component. Since the turntable is made of transparent material, when the optical detector 2 is facing the bottom of the product, it can inspect the bottom of the product. In summary, the present invention can perform all-round inspection on the passing products through the inspection device 1 and the inspection device 2, thereby improving the inspection efficiency and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the main viewing angle is shown.

[0026] Figure 3 It is a schematic diagram of the structure inside the upper frame of the present invention.

[0027] Figure 4 It is a structural schematic diagram of the detection device 1 of the present invention.

[0028] Figure 5 It is a schematic structural diagram of the detection device 2 of the present invention.

[0029] Figure 6 for Figure 5 A schematic diagram of the structure from a top view perspective is shown.

[0030] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention.

[0031] Figure 8 for Figure 7 A schematic diagram of the structure from another perspective is shown.

[0032] Fig. 9 for Figure 7 A schematic diagram of the structure from a top-down perspective is shown.

[0033] The accompanying drawings are marked as follows: 1, upper cabinet; 2, middle cabinet; 3, lower cabinet; 4, locking universal wheel; 5, support cabinet; 6, feeding equipment; 7, reducer support; 8, reducer body; 9, detection plate; 10, detection device one; 11, detection device two; 12, support plate; 13, base; 14, sleeve one; 15, movable part one; 16, sleeve two; 17, movable part two; 18, sleeve three; 19, movable part three; 20, optical detector one; 21, fixed plate; 22, fixed column; 23, fixed block; 24, driving device one; 25, Screw rod; 26, slider; 27, adjustment component; 28, power wheel; 29, conduction belt; 30, force wheel; 31, driving device 2; 32, carrier plate; 33, workbench; 34, push-pull device; 35, movable plate; 36, rack; 37, gear; 38, bearing member; 39, shaft 1; 40, wheel 1; 41, wheel 2; 42, transmission belt 1; 43, shaft 2; 44, wheel 3; 45, wheel 4; 46, transmission belt 2; 47, connecting rod; 48, sliding member; 49, driving device 3; 50, optical detector 2. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention provides an optical screening machine for product appearance defect detection, comprising an upper cabinet 1, a middle cabinet 2 and a lower cabinet 3, wherein the upper cabinet 1, the middle cabinet 2 and the lower cabinet 3 are connected to form a detection cabinet, a support cabinet 5 is provided on one side of the detection cabinet, a feeding device 6 is provided on the top of the support cabinet 5, and the feeding device 6 passes through a cavity opened in the middle cabinet 2 and is connected to a detection plate 9;

[0036] A support plate 12 is provided between the upper cabinet 1 and the middle cabinet 2, a reducer body 8 is provided in the middle part of the support plate 12, the power end of the reducer body 8 is connected to the detection plate 9, and the side walls of the detection plate 9 are respectively provided with a detection device 10 and a detection device 2 11;

[0037] The detection device 10 includes a base 13 disposed on the surface of a support plate 12, and a sleeve 14, a movable part 15, a sleeve 2 16, a movable part 2 17, a sleeve 3 18 and a movable part 3 19 connected to each other are disposed above the base 13, and an optical detector 20 is disposed at one end of the movable part 3 19 away from the sleeve 3 18;

[0038] The detection device 2 11 includes a fixed plate 21 arranged on the inner wall of the upper cabinet 1, two groups of fixed blocks 23 are arranged on the surface of the fixed plate 21, and a fixed column 22 and a screw rod 25 are arranged between the two groups of fixed blocks 23, a slider 26 is arranged on the surface of the fixed column 22 and the screw rod 25, and a threaded hole for threaded connection with the screw rod 25 is opened inside the slider 26, a supporting plate 32 is arranged on one side of the slider 26, and an adjustment component 27 is arranged on the top of the supporting plate 32, and the adjustment component 27 is connected to the optical detector 2 50.

[0039] Based on the above, the above scheme is further refined and introduced in combination with the following specific working methods. See the following description for details.

[0040] like Figure 2 As shown; a reducer support 7 is provided in the middle part of the top of the support plate 12, and the reducer body 8 is provided inside the reducer support 7. Furthermore, the reducer body 8 is supported by the reducer support 7, and then the reducer body 8 is used to drive the detection disk 9 to rotate so as to detect the product.

[0041] like Figure 4As shown; both ends of movable part 15 and movable part 2 17 are provided with connecting grooves, and one end of movable part 3 19 is provided with a connecting groove, one end of the sleeve 14 is movably connected to the base 13, and the other end of the sleeve 14 is sleeved inside the connecting groove provided by the movable part 15, and a sleeve 2 16 is provided between the connecting grooves provided by the movable part 15 and the movable part 2 17, and a sleeve 3 18 is provided between the connecting grooves provided by the movable part 17 and the movable part 3 19. Furthermore, the connecting grooves provided by the movable part 15, the movable part 2 17 and the movable part 3 19 are movably connected with the sleeve 14, the sleeve 2 16 and the sleeve 3 18, so that the detection device 10 can drive the optical detection instrument 20 to move on the side wall of the product through movement, so as to detect the side wall of the product.

[0042] like Figure 6 As shown; two groups of through holes are opened on the surface of the fixed block 23 located at the bottom, and bearings are arranged inside each group of through holes. A driving device 24 is arranged on the surface of the fixed plate 21. The power end of the driving device 24 is connected to the corresponding bearing inner ring, and the other end of the bearing inner ring is connected to a power wheel 28. A force wheel 30 is arranged on one side of the power wheel 28, and a conductive belt 29 is sleeved between the force wheel 30 and the power wheel 28. The top of the force wheel 30 is connected to another group of bearing inner rings, and the top of the bearing inner ring is connected to the screw rod 25. Further, the power wheel 28 is driven to rotate by the driving device 24, and the power wheel 28 drives the force wheel 30 to rotate through the conductive belt 29, and the force wheel 30 drives the screw rod 25 to rotate, thereby driving the slider 26 to rise and fall, so as to adjust the height of the adjustment component 27, so that the detection device 2 11 can detect the top and bottom of the product.

[0043] like Figure 7 As shown; a through hole is provided in the middle part of the rotating disk, and a driving device 2 31 is provided at the bottom of the rotating disk. The power end of the driving device 2 31 is connected to a workbench 33 through the through hole. A rack 36 is movably provided on the surface of the workbench 33, and one end of the rack 36 is connected to a movable plate 35. A push-pull device 34 is provided on one side of the workbench 33, and the power end of the push-pull device 34 is connected to the movable plate 35. Further, the movable plate 35 is pushed to move horizontally by the push-pull device 34, so as to drive the rack 36 to move horizontally.

[0044] like Figure 8As shown; a bearing member 38 is provided in the middle part of the workbench 33, and two groups of through holes are opened on the surface of the bearing member 38, and a rotating shaft 1 39 and a rotating shaft 2 43 are respectively provided inside the two groups of through holes, and a gear 37 is provided at one end of the rotating shaft 1 39, and the gear 37 is meshed with the rack 36, and a rotating wheel 1 40 is provided at the other end of the rotating shaft 1 39, and a rotating wheel 2 41 and a rotating wheel 3 44 are respectively provided at both ends of the rotating shaft 2 43, and a rotating wheel 4 45 is movably provided on one side of the workbench 33 and the rotating wheel 3 44, wherein, A transmission belt 1 42 is sleeved between the wheel 1 40 and the wheel 2 41, and a transmission belt 2 46 is sleeved between the wheel 3 44 and the wheel 4 45. Furthermore, the rack 36 is moved horizontally to drive the gear 37 to rotate, and the gear 37 is used to drive the shaft 1 39 to rotate. The rotation of the shaft 1 39 drives the wheel 1 40 and the wheel 2 41 to rotate. The wheel 2 41 drives the shaft 2 43 to rotate, and then the shaft 2 43 drives the wheel 3 44 and the wheel 4 45 to rotate, thereby completing the transmission structure.

[0045] like Fig. 9 As shown; a slide rail is provided at the top of the workbench 33, a slide member 48 is movably provided on the surface of the slide rail, and a connecting rod 47 is provided between the slide member 48 and the surface of the transmission belt 2 46, a driving device 3 49 is provided at the top of the slide member 48, and an optical detector 2 50 is provided at the power end of the driving device 3 49. Furthermore, the slide member 48 and the transmission belt 2 46 are connected by the connecting rod 47, and the slide member 48 is driven to move horizontally by the transmission belt 2 46, thereby driving the driving device 3 49 to move horizontally, so as to prevent the optical detector 2 50 from touching the detection disk 9 when the adjustment component 27 is raised or lowered, and then the driving device 3 49 is used to drive the optical detector 2 50 to rotate, so as to detect the top and bottom of the product.

[0046] like Figure 2 As shown; a plurality of groups of threaded holes are provided on the surface of the fixing plate 21, and corresponding threaded holes are provided on the inner wall of the upper cabinet 1 at the corresponding positions of the threaded holes, and bolts are provided between every two groups of corresponding threaded holes. Furthermore, the threaded holes provided on the surface of the fixing plate 21 are threadedly connected with the bolts to fix the fixing plate 21 to the side wall of the upper cabinet 1.

[0047] like Figure 1 As shown; a cavity is opened at the bottom of the middle cabinet 2, a pull-out cabinet is arranged inside the cavity, and a control keyboard is arranged inside the pull-out cabinet. Further, the parameters can be modified through the control keyboard.

[0048] like Figure 1 As shown; locking universal wheels 4 are provided at the four ends of the bottom of the lower cabinet 3 and the bottom of the supporting cabinet 5. Further, the locking universal wheels 4 are used to enable the detection cabinet and the supporting cabinet 5 to move freely.

[0049] In summary, the workflow of the present invention is:

[0050] The present invention conveys the product to the surface of the detection disk 9 through the feeding device 6, and drives the detection disk 9 to rotate through the reducer body 8 so as to detect the product. The present invention performs all-round detection of the product through the detection device 10 and the detection device 2 11 arranged inside the upper cabinet 1, wherein the detection device 10 is movable with each other through the sleeve 14, the movable part 15, the sleeve 2 16, the movable part 2 17, the sleeve 3 18 and the movable part 3 19 set, and the optical detector 1 20 is directed to the side wall of the product to detect the side wall of the product. The detection device 2 11 drives the optical detector 2 50 to the top and bottom of the product through the lifting component and the adjustment component 27. Since the turntable is made of transparent material, when the optical detector 2 50 is directed to the bottom of the product, the bottom of the product can be detected. In summary, the present invention can perform all-round detection of the passing products through the detection device 10 and the detection device 2 11, thereby improving the detection efficiency and lowering the cost.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical screening machine for detecting product appearance defects, comprising an upper cabinet (1), a middle cabinet (2) and a lower cabinet (3), characterized in that: The upper cabinet (1), the middle cabinet (2) and the lower cabinet (3) are connected to each other to form a detection cabinet, a support cabinet (5) is provided on one side of the detection cabinet, a feeding device (6) is provided on the top of the support cabinet (5), and the feeding device (6) passes through a cavity opened in the middle cabinet (2) and is connected to the detection plate (9); A support plate (12) is provided between the upper cabinet (1) and the middle cabinet (2), a reducer body (8) is provided in the middle part of the support plate (12), a power end of the reducer body (8) is connected to a detection plate (9), and a detection device 1 (10) and a detection device 2 (11) are respectively provided on the side walls of the detection plate (9); The detection device (10) comprises a base (13) arranged on the surface of a support plate (12), and a sleeve (14), a movable part (15), a sleeve (16), a movable part (17), a sleeve (18) and a movable part (19) which are connected to each other are arranged above the base (13), and an optical detector (20) is arranged at one end of the movable part (19) away from the sleeve (18); The second detection device (11) comprises a fixing plate (21) arranged on the inner wall of the upper cabinet (1), two groups of fixing blocks (23) are arranged on the surface of the fixing plate (21), and a fixing column (22) and a screw rod (25) are arranged between the two groups of fixing blocks (23), a sliding block (26) is arranged on the surface of the fixing column (22) and the screw rod (25), and a threaded hole for threaded connection with the screw rod (25) is opened inside the sliding block (26), a bearing plate (32) is arranged on one side of the sliding block (26), and an adjusting component (27) is arranged on the top of the bearing plate (32), and the adjusting component (27) is connected to the second optical detector (50).

2. An optical screening machine for product appearance defect detection according to claim 1, characterized in that: A reducer support member (7) is provided at the middle portion of the top end of the support plate (12), and a reducer body (8) is provided inside the reducer support member (7).

3. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: Both ends of the movable part 1 (15) and the movable part 2 (17) are provided with connecting grooves, and one end of the movable part 3 (19) is provided with a connecting groove. One end of the sleeve 1 (14) is movably connected to the base (13), and the other end of the sleeve 1 (14) is sleeved inside the connecting groove provided by the movable part 1 (15). The sleeve 2 (16) is provided between the connecting grooves provided by the movable part 1 (15) and the movable part 2 (17), and the sleeve 3 (18) is provided between the connecting grooves provided by the movable part 2 (17) and the movable part 3 (19).

4. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: The surface of the fixing block (23) located at the bottom is provided with two groups of through holes, and a bearing is arranged inside each group of through holes. The surface of the fixing plate (21) is provided with a driving device (24), and the power end of the driving device (24) is connected to the corresponding bearing inner ring, and the other end of the bearing inner ring is connected to a power wheel (28), and a force wheel (30) is arranged on one side of the power wheel (28), and a conductive belt (29) is sleeved between the force wheel (30) and the power wheel (28), and the top end of the force wheel (30) is connected to another group of bearing inner rings, and the top end of the bearing inner ring is connected to the screw rod (25).

5. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: A through hole is provided in the middle of the rotating disk, and a second driving device (31) is provided at the bottom of the rotating disk. The power end of the second driving device (31) passes through the through hole and is connected to a workbench (33). A rack (36) is movably provided on the surface of the workbench (33), and one end of the rack (36) is connected to a movable plate (35). A push-pull device (34) is provided on one side of the workbench (33), and the power end of the push-pull device (34) is connected to the movable plate (35).

6. The optical screening machine for product appearance defect detection according to claim 5, characterized in that: A bearing member (38) is provided in the middle part of the workbench (33), and two groups of through holes are opened on the surface of the bearing member (38), and a rotating shaft (39) and a rotating shaft (43) are respectively provided inside the two groups of through holes. A gear (37) is provided at one end of the rotating shaft (39), and the gear (37) is meshed with the rack (36). A rotating wheel (40) is provided at the other end of the rotating shaft (39), and a rotating wheel (41) and a rotating wheel (44) are respectively provided at both ends of the rotating shaft (43). A rotating wheel (45) is movably provided on one side of the workbench (33) corresponding to the rotating wheel (44), wherein a transmission belt (42) is sleeved between the rotating wheel (40) and the rotating wheel (41), and a transmission belt (46) is sleeved between the rotating wheel (44) and the rotating wheel (45).

7. An optical screening machine for product appearance defect detection according to claim 6, characterized in that: The top of the workbench (33) is provided with a slide rail, a sliding member (48) is movably provided on the surface of the slide rail, and a connecting rod (47) is provided between the sliding member (48) and the surface of the transmission belt, a driving device three (49) is provided at the top of the sliding member (48), and an optical detector two (50) is provided at the power end of the driving device three (49).

8. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: The surface of the fixing plate (21) is provided with a plurality of groups of threaded holes, and corresponding threaded holes are provided on the inner wall of the upper cabinet (1) at positions corresponding to the threaded holes, and bolts are provided between every two groups of corresponding threaded holes.

9. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: A cavity is provided at the bottom of the middle cabinet body (2), a drawer cabinet is arranged inside the cavity, and a control keyboard is arranged inside the drawer cabinet.

10. The optical screening machine for product appearance defect detection according to claim 1, characterized in that: The bottom of the lower cabinet (3) and the four ends of the bottom of the supporting cabinet (5) are provided with locking universal wheels (4).

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