A surface defect detection device for door and window fittings

Abstract

The application relates to the technical field of visual detection, in particular to a door and window fitting surface defect detection device which comprises two distribution areas and a conversion area, the distribution area comprises a distribution table, the upper portion of the distribution table is provided with a frame, the inside of the frame is provided with a detection camera, the conversion area is arranged between the two distribution areas, the conversion area comprises a conversion frame connected between the two distribution tables, the inside of the frame is provided with an angle adjusting assembly, the detection camera is arranged at the side of the angle adjusting assembly, the angle adjusting assembly comprises an arc plate arranged in the inside of the frame, a track is formed through the outer surface of the arc plate, a sliding tool is slidably connected in the inside of the track, the inside of the frame is provided with the angle adjusting assembly, the sliding tool drives the detection camera to smoothly move along the arc-shaped track in the process of operation of the detection camera, the position change of the detection camera is realized, the outer surface of the door and window fitting can be conveniently collected in multiple positions, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of visual inspection, in particular to a surface defect detection device for door and window accessories. Background Art

[0002] Door and window accessories are key components to ensure the normal use and function of doors and windows, including hinges, locks, pulleys, handles, etc. During the production process, the outer surface of door and window accessories needs to be inspected to check for defects to avoid interference with the installation and use of doors and windows. The visual inspection device uses an industrial camera to capture images of the accessories, and then uses image processing algorithms to quickly and accurately detect the size, shape, surface defects, etc. of the accessories.

[0003] After searching, it was found that according to the publication number CN218067685U, an online visual inspection device for surface defects of aluminum-plastic profile parts is disclosed, which includes a base plate, a lifting device body, a first motor, a guide groove, a sliding part, a detection device body and an auxiliary device. Auxiliary devices are provided on both sides of the lifting device body, and a cleaning mechanism is provided in the auxiliary device. The front end of the cleaning mechanism is connected to the cylinder, and the cylinder drive can move it to the detection device body to quickly clean its bottom. The automation effect is good and the operation is convenient. An intermittent mechanism is provided inside the cleaning mechanism, and the intermittent mechanism is driven by an independent motor. After being driven, it moves through the pulley, so that the three groups of brushes on the top rotate synchronously and intermittently to clean the detection window at the bottom of the detection device body, so as to avoid wear of the bottom of the detection window due to rapid rotation. The cleaning efficiency is high and the effect is good.

[0004] The above patent still has shortcomings in actual use. Since most door and window accessories have irregular geometric shapes and complex curves, concave-convex structures and special-shaped contours on the surface, during the appearance inspection process, the industrial camera only collects images from directly above the door and window accessories. Due to the limitations of optical imaging principles and geometric occlusion effects, it cannot cover all the details of the outer surface, which can easily lead to omissions. As functional components used on both sides, door and window accessories must meet strict quality standards on both front and back surfaces. Therefore, manual flipping of the door and window accessories is required, which not only significantly increases labor and time costs, but also easily causes fatigue errors due to repetitive manual operations, making it difficult to guarantee inspection efficiency and accuracy.

[0005] Based on this, the present invention discloses a surface defect detection device for door and window accessories. Summary of the Invention

[0006] To solve the problem raised in the background art that most door and window accessories have irregular geometric shapes and complex surface structures, and that industrial cameras are prone to missing details when only capturing images from directly above due to optical principles and occlusion effects, while both the front and back sides of the accessories need to be inspected, and manual flipping operations increase costs and affect efficiency and accuracy, the present invention provides a surface defect inspection device for door and window accessories, which includes two delivery areas and a conversion area. The delivery area includes a delivery platform, a frame is provided on the upper portion of the delivery platform, and an inspection camera is provided inside the frame. The conversion area is provided between the two delivery areas, and the conversion area includes a conversion frame connected between the two delivery platforms, and the height of the front delivery platform is higher than the rear delivery platform.

[0007] An angle adjustment component is provided inside the frame, and the detection camera is provided on the side of the angle adjustment component;

[0008] The angle adjustment assembly includes an arched plate arranged inside the frame, a track is formed through the outer surface of the arched plate, the track is designed to be arc-shaped, and a slide is slidably connected to the inside of the track;

[0009] A maintaining component is provided on the side of the arch plate, and the maintaining component is connected to the angle adjustment component and the detection camera. A reciprocating component is provided on the side of the conversion frame, and a flipping component is provided on the inner side of the conversion frame. A pushing component is provided on the side of the flipping component, and the reciprocating component drives the flipping component and the pushing component to operate alternately.

[0010] Because most door and window accessories have irregular geometric shapes and complex surface structures, industrial cameras are prone to missing details when collecting images from directly above due to optical principles and occlusion effects. In order to ensure the integrity of the inspection, it is necessary to collect images of the outer surface of door and window accessories from multiple angles.

[0011] As a further improvement of the present technical solution, the side of the slide is fixedly connected to a limiting slider, the side of the frame is provided with a hydraulic rod, the driving end of the hydraulic rod extends into the interior of the frame and is fixedly connected to a strip frame, the side of the strip frame is penetrated by a limiting slot, and the limiting slider is slidably connected to the inside of the limiting slot.

[0012] On this basis, since the outer surface of door and window accessories is not a regular planar structure, if the lens remains unchanged during the movement of the detection camera, some details may be missed. In order to synchronously deflect the lens while the detection camera moves;

[0013] As a further improvement of this technical solution, the maintaining assembly includes a center rod rotatably connected to the side of the slide, the detection camera is fixedly installed on the end of the center rod away from the slide, and a worm gear is fixedly provided on the outer surface of the center rod.

[0014] As a further improvement of the present technical solution, a support is fixedly connected to the edge of the slide, a worm is movably inserted into the middle of the support, the worm is meshingly connected to the worm wheel, the top of the worm is fixedly connected to a bevel gear, the upper surface of the arch plate is fixedly connected to a gear ring, and the bevel gear is meshingly connected to the gear ring.

[0015] In another solution, since door and window accessories are double-sided functional components, both the front and back surfaces must meet strict quality standards. Manual flipping is not only costly and repetitive, but also easily leads to reduced accuracy. To improve the efficiency of flipping, automatic flipping is implemented.

[0016] As a further improvement of the present technical solution, the reciprocating assembly includes a motor arranged on the side of the conversion frame, the driving end of the motor extends into the interior of the conversion frame and is fixedly connected to a turntable, the side of the turntable away from the motor is fixedly connected to a shift block, and the outer surface of the shift block is movably sleeved with a push rod.

[0017] As a further improvement of the present technical solution, the end of the push rod away from the shift block is movably connected to a positioning block, and two racks are provided on the side of the positioning block. The two racks are separately arranged up and down, and a side groove is provided on the inner side of the conversion frame, and the positioning block is slidably connected to the inside of the side groove.

[0018] As a further improvement of the present technical solution, the flip assembly includes a shaft rod 1 that is movably inserted into the inner side of the conversion frame, and a flap is fixedly connected to the outer surface of the shaft rod 1.

[0019] As a further improvement of this technical solution, there are two flaps and the angle between the two flaps is ninety degrees, wherein the outer surface of the flap close to the pushing component is provided with a hollow groove, and the end of the shaft rod extending into the interior of the conversion frame is fixedly sleeved with a driven wheel.

[0020] As a further improvement of the present technical solution, the pushing assembly includes a second shaft rod movably inserted into the inner side of the conversion frame, the outer surface of the second shaft rod is fixedly connected to a hollow plate, the hollow plate is arranged corresponding to the hollow groove, and the end of the second shaft rod extending into the interior of the conversion frame is fixedly sleeved with a driven wheel 2.

[0021] As a further improvement of the present technical solution, the number of tooth blocks of the driven wheel 2 is the same as that of the driven wheel 1, and both are one-fourth the number of tooth blocks of the rack.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this type of door and window accessory surface defect detection device, an angle adjustment component is set inside the frame. During the operation of the detection camera, the slide drives the detection camera to move smoothly along the arc-shaped track, thereby realizing the position change of the detection camera, facilitating multi-position image acquisition of the outer surface of the door and window accessories, and improving the accuracy of detection.

[0024] 2. In this type of surface defect detection device for door and window accessories, a maintaining component is set on the side of the slide to connect the angle adjustment component and the detection camera. When the slide slides along the track, the detection camera will rotate synchronously, thereby achieving the purpose of changing the shooting angle of the detection camera, increasing the range of image acquisition, achieving the effect of multi-angle acquisition, and avoiding omissions.

[0025] 3. In this type of door and window accessories surface defect detection device, by arranging a flip plate and a hollow plate inside the conversion frame, and utilizing the transmission of motor drive and turntable and other structures, the flip plate and the hollow plate are alternately operated, thereby achieving the effect of automatically turning over the door and window accessories, and the turned-over door and window accessories can also be pushed to facilitate the detection of the reverse side. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure inside the frame of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the angle adjustment assembly of the present invention;

[0029] Figure 4 This is a schematic structural diagram of the external connection of the arched plate of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the maintenance component of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the flip assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the flip assembly and the pushing assembly of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the push component of the present invention from a first perspective;

[0034] Figure 9 This is a schematic structural diagram of the push component from a second perspective of the present invention.

[0035] The meaning of each number in the figure is:

[0036] 1. Distribution platform; 2. Frame; 3. Conversion frame; 4. Angle adjustment assembly; 5. Maintaining assembly; 6. Detection camera; 7. Reciprocating assembly; 8. Flipping assembly; 9. Pushing assembly; 41. Hydraulic rod; 42. Arch plate; 43. Track; 44. Slide; 45. Limit slider; 46. Bar frame; 47. Limit slide; 51. Center rod; 52. Worm gear; 53. Support; 54. Worm; 55. Bevel gear; 56. Gear ring; 71. Motor; 72. Turntable; 73. Shift block; 74. Push rod; 75. Positioning block; 76. Rack; 77. Side groove; 81. Shaft rod one; 82. Flip plate; 83. Hollow groove; 84. Driven wheel one; 91. Shaft rod two; 92. Hollow plate; 93. Driven wheel two. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0038] Existing door and window accessories mostly have irregular geometric shapes and complex surface structures. When industrial cameras only capture images from directly above, they are easily missed due to optical principles and occlusion effects. Both the front and back sides of the accessories need to be inspected, and manual flipping operations increase costs and affect efficiency and accuracy.

[0039] To this end, the present invention provides a surface defect detection device for door and window accessories, see Figure 1 As shown, it includes two delivery areas and a conversion area. The delivery area includes a delivery platform 1. A frame 2 is provided on the upper portion of the delivery platform 1. A detection camera 6 is provided inside the frame 2. The conversion area is provided between the two delivery areas and includes a conversion frame 3 connected between the two delivery platforms 1. The height of the previous delivery platform 1 will be higher than the next delivery platform 1.

[0040] During operation, the door and window accessories to be inspected are placed on the first delivery platform 1. When passing through the frame 2, the inspection camera 6 collects images of the door and window accessories, and then uses the image processing algorithm to quickly and accurately detect the size, shape, surface defects, etc. of the accessories. Once an abnormality occurs, it will be marked and the staff will be reminded. If the inspection is normal, it will enter the conversion area for position flipping, and then enter the next delivery platform 1 for a second inspection, thus achieving the purpose of complete inspection of the outer surface defects of the door and window accessories.

[0041] For further information, see Figure 2 、 Figure 3 and Figure 5As shown, since most door and window accessories have irregular geometric shapes and complex surface structures, when an industrial camera only collects images from directly above, it is easy to miss details due to the limitations of optical principles and occlusion effects. In order to ensure the integrity of the inspection, it is necessary to collect images of the outer surface of the door and window accessories from multiple angles. In this application, an angle adjustment component 4 is provided inside the frame 2, and the detection camera 6 is provided on the side of the angle adjustment component 4. The angle adjustment component 4 is used to change the position of the detection camera 6;

[0042] Specifically, the angle adjustment assembly 4 includes an arched plate 42 arranged inside the frame 2, and a track 43 is formed on the outer surface of the arched plate 42. The track 43 is designed to be arc-shaped, and a slide 44 is slidably connected to the inside of the track 43. The side of the slide 44 is fixedly connected to a limit slider 45. A hydraulic rod 41 is provided on the side of the frame 2. The driving end of the hydraulic rod 41 extends into the interior of the frame 2 and is fixedly connected to a bar frame 46. A limit slot 47 is formed on the side of the bar frame 46, and the limit slider 45 is slidably connected to the inside of the limit slot 47.

[0043] During operation, when the door and window accessories are delivered to the bottom of the frame 2, it will stop briefly, and then the detection camera 6 will collect images. In this process, the hydraulic rod 41 will continue to make a complete reciprocating push and pull, and the hydraulic rod 41 will push the bar frame 46 to move. Since the slide 44 is slidably connected to the limit slide 47 through the limit slider 45, the movement of the bar frame 46 will drive the slide 44 to move, and the slide 44 will slide along the track 43 at the same time. Due to the arc design of the track 43, there will be a height difference, so the slide 44 will have an up and down displacement change, so that the limit slider 45 slides synchronously inside the limit slide 47, avoiding motion interference, ensuring that the slide 44 drives the detection camera 6 to move smoothly, and realizing the position change of the detection camera 6, which is convenient for multi-position image collection of the outer surface of the door and window accessories, and improves the accuracy of detection.

[0044] For further information, see Figures 2 to 5 As shown, since the outer surface of the door and window accessories is not a regular planar structure, if the lens of the detection camera 6 remains unchanged during movement, some details may be missed. In order to synchronously deflect the lens while the detection camera 6 moves, the present application provides a maintaining component 5 on the side of the arch plate 42, which connects the angle adjustment component 4 and the detection camera 6;

[0045] Specifically, the maintaining assembly 5 includes a central rod 51 rotatably connected to the side of the slide 44, the detection camera 6 is fixedly installed on the end of the central rod 51 away from the slide 44, a worm gear 52 is fixedly sleeved on the outer surface of the central rod 51, a support 53 is fixedly connected to the edge of the slide 44, a worm 54 is movably inserted into the middle of the support 53, the worm 54 is meshed with the worm gear 52, the top of the worm 54 is fixedly connected to the bevel gear 55, and the upper surface of the arched plate 42 is fixedly connected to the gear ring 56, and the bevel gear 55 is meshed with the gear ring 56;

[0046] During operation, as the slide 44 slides along the track 43, it will drive the maintaining component 5 to move synchronously, and the bevel gear 55 will rotate under the limit of the gear ring 56, and then drive the worm 54 to rotate inside the support 53. The rotation of the worm 54 will drive the worm wheel 52 to rotate, and the worm wheel 52 is connected to the detection camera 6 through the center rod 51, so the detection camera 6 will rotate synchronously, achieving the purpose of changing the shooting angle of the detection camera 6, improving the range of image acquisition, achieving the effect of multi-angle acquisition, and avoiding omissions. The worm wheel 52 and worm 54 are self-locking, which can prevent the detection camera 6 from rotating. At the same time, the transmission ratio of the worm 54 and the worm wheel 52 is relatively low, which can ensure that the deflection angle of the detection camera 6 is within a small range, and the image acquisition of detail positions is more accurate.

[0047] In addition, see Figures 6 to 9 As shown, since door and window accessories are functional components used on both sides, both the front and back surfaces must meet strict quality standards. Manual flipping is not only costly, but repetitive labor can also easily lead to reduced accuracy. In order to improve the efficiency of flipping and achieve automatic flipping, the present application adopts a reciprocating component 7 provided on the side of the conversion frame 3, a flipping component 8 provided on the inner side of the conversion frame 3, and a pushing component 9 provided on the side of the flipping component 8. The reciprocating component 7 drives the flipping component 8 and the pushing component 9 to operate alternately;

[0048] Specifically, the reciprocating assembly 7 includes a motor 71 arranged on the side of the conversion frame 3. The driving end of the motor 71 extends into the interior of the conversion frame 3 and is fixedly connected to a turntable 72. A shift block 73 is fixedly connected to the side of the turntable 72 away from the motor 71. A push rod 74 is movably sleeved on the outer surface of the shift block 73. The end of the push rod 74 away from the shift block 73 is movably connected to a positioning block 75. Two racks 76 are provided on the side of the positioning block 75. The two racks 76 are arranged separately up and down. A side groove 77 is opened on the inner side of the conversion frame 3. The positioning block 75 is slidably connected to the inside of the side groove 77.

[0049] Furthermore, the flip assembly 8 includes a shaft 81 that is movably inserted into the inner side of the conversion frame 3. The outer surface of the shaft 81 is fixedly connected to a flap 82. The flap 82 is provided with two pieces, and the angle between the two flaps 82 is 90 degrees. The outer surface of the flap 82 close to the pushing assembly 9 is provided with a hollow groove 83. The end of the shaft 81 that extends into the interior of the conversion frame 3 is fixedly sleeved with a driven wheel 84.

[0050] Secondly, the pushing assembly 9 includes a second shaft 91 that is movably inserted into the inner side of the conversion frame 3. The outer surface of the second shaft 91 is fixedly connected to a hollow plate 92. The hollow plate 92 is arranged corresponding to the hollow groove 83. The end of the second shaft 91 extending into the interior of the conversion frame 3 is fixedly sleeved with a second driven wheel 93. The number of teeth on the second driven wheel 93 is the same as that on the first driven wheel 84, and both are one-fourth the number of teeth on the rack 76.

[0051] When working, after the door and window accessories have passed the first round of image acquisition and detection, they will enter the position of the conversion frame 3. In the initial state, the two flaps 82 on the outer surface of the shaft rod 81 are in a position where the opening is tilted to the right. At this time, the door and window accessories can smoothly slide from the first distribution platform 1 to the upper surface of the flap 82. Then the motor 71 is operated, and the motor 71 drives the turntable 72 to rotate. During the rotation of the turntable 72, the dial block 73 is driven to make a circular motion around the center of the turntable 72, and the dial block 73 drives the push rod 74 to move during the movement. Since the positioning block 75 connected to the other end of the push rod 74 will slide within the inner limit of the side groove 77, the push rod 74 affected by the positioning block 75 can only make a straight reciprocating motion along the side groove 77 when pushed by the dial block 73, and is located at the positioning block 7 The rack 76 at the top of the 5 will mesh with the driven wheel 1 84. The rotation of the driven wheel 1 84 will drive the shaft 1 81 to rotate, and then drive the flap 82 to flip. Driven by the rack 76, the driven wheel 1 84 will flip 90 degrees, and the door and window accessories located on the flap 82 will also flip and be placed on the flap 82 with the hollow groove 83. Then, as the push rod 74 continues to push, the rack 76 at the bottom of the positioning block 75 will mesh with the transmission wheel 2. The transmission wheel 2 drives the shaft 2 91 to rotate and drive the hollow plate 92 to flip. The hollow plate 92 just passes through the inside of the hollow groove 83. Therefore, during the rotation of the hollow plate 92, the door and window accessories will be moved, causing the door and window accessories to slide onto the second distribution platform 1 for reverse detection, thereby achieving the effect of automatically flipping the door and window accessories.

[0052] It should be noted that, since the dial block 73 performs a circular motion, the push rod 74 will move back after moving to the limit position, and then when the door and window accessories are turned over and pushed to the next delivery platform 1, the push rod 74 starts to pull back the positioning block 75, and the positioning block 75 drives the rack 76 to move, and then drives the flip plate 82 and the hollow plate 92 to reset, preparing to flip and push the next door and window accessories, and so on and so forth to achieve the effect of continuous automatic flipping of door and window accessories.

[0053] In summary, multi-range acquisition is achieved by changing the position and angle of the detection camera 6, and the flipping component 8 and the pushing component 9 are used to realize automatic flipping of the door and window accessories, thereby effectively solving the existing problem that most door and window accessories have irregular geometric shapes and complex surface structures. When industrial cameras only collect images from directly above, they are restricted by optical principles and occlusion effects and are prone to missing details. Both the front and back sides of the accessories need to be inspected, and manual flipping operations increase costs and affect efficiency and accuracy.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A surface defect detection device for door and window accessories, comprising two delivery areas and a conversion area, wherein the delivery area comprises a delivery platform (1), a frame (2) is provided on the upper portion of the delivery platform (1), a detection camera (6) is provided inside the frame (2), the conversion area is provided between the two delivery areas, the conversion area comprises a conversion frame (3) connected between the two delivery platforms (1), the height of the preceding delivery platform (1) is higher than the following delivery platform (1), and the device is characterized in that: An angle adjustment component (4) is provided inside the frame (2), and a detection camera (6) is provided on the side of the angle adjustment component (4); The angle adjustment component (4) includes an arched plate (42) arranged inside the frame (2), a track (43) is provided through the outer surface of the arched plate (42), the track (43) is designed to be arc-shaped, the track (43) is slidably connected to the inside of the slide (44), the side of the slide (44) is fixedly connected to the limiting slider (45), the side of the frame (2) is provided with a hydraulic rod (41), the driving end of the hydraulic rod (41) extends into the inside of the frame (2) and is fixedly connected to the strip frame (46), the side of the strip frame (46) is provided with a limiting slide groove (47), and the limiting slider (45) is slidably connected to the inside of the limiting slide groove (47); A maintaining assembly (5) is provided on the side of the arch plate (42), the maintaining assembly (5) is connected to the angle adjustment assembly (4) and the detection camera (6), a reciprocating assembly (7) is provided on the side of the conversion frame (3), a flip assembly (8) is provided on the inner side of the conversion frame (3), a pushing assembly (9) is provided on the side of the flip assembly (8), and the reciprocating assembly (7) drives the flip assembly (8) and the pushing assembly (9) to operate alternately; The maintaining assembly (5) includes a center rod (51) on the side of a rotatably connected slide (44), the detection camera (6) is fixedly mounted on an end of the center rod (51) away from the slide (44), a worm gear (52) is fixedly sleeved on the outer surface of the center rod (51), a support (53) is fixedly connected to the edge of the slide (44), a worm (54) is movably inserted into the middle of the support (53), the worm (54) is meshed with the worm gear (52), the top of the worm (54) is fixedly connected with a bevel gear (55), the upper surface of the arch plate (42) is fixedly connected with a gear ring (56), and the bevel gear (55) is meshed with the gear ring (56); The reciprocating assembly (7) includes a motor (71) arranged on the side of the conversion frame (3), a driving end of the motor (71) extends into the interior of the conversion frame (3) and is fixedly connected to a turntable (72), a side of the turntable (72) away from the motor (71) is fixedly connected to a shift block (73), and a push rod (74) is movably sleeved on the outer surface of the shift block (73).

2. The surface defect detection device for door and window accessories according to claim 1, characterized in that: One end of the push rod (74) away from the shift block (73) is movably connected to a positioning block (75), and two racks (76) are provided on the side of the positioning block (75). The two racks (76) are separately provided up and down. A side groove (77) is provided on the inner side of the conversion frame (3), and the positioning block (75) is slidably connected to the inside of the side groove (77).

3. The surface defect detection device for door and window accessories according to claim 1, characterized in that: The flip assembly (8) comprises a shaft rod (81) movably inserted into the inner side of the conversion frame (3), and a flap (82) is fixedly connected to the outer surface of the shaft rod (81).

4. The surface defect detection device for door and window accessories according to claim 3, characterized in that: The flaps (82) are provided with two pieces and the angle between the two flaps (82) is ninety degrees, wherein the outer surface of the flap (82) close to the pushing assembly (9) is provided with a hollow groove (83), and one end of the shaft (81) extending into the interior of the conversion frame (3) is fixedly sleeved with a driven wheel (84).

5. The surface defect detection device for door and window accessories according to claim 1, characterized in that: The pushing assembly (9) includes a second shaft rod (91) that is movably inserted into the inner side of the conversion frame (3), and the outer surface of the second shaft rod (91) is fixedly connected to a hollow plate (92), and the hollow plate (92) is arranged corresponding to the hollow groove (83). One end of the second shaft rod (91) that extends into the interior of the conversion frame (3) is fixedly sleeved with a second driven wheel (93).

6. The surface defect detection device for door and window accessories according to claim 5, characterized in that: The number of tooth blocks of the driven wheel 2 (93) is the same as that of the driven wheel 1 (84), and both are one-fourth the number of tooth blocks of the rack (76).

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