Coiled material surface defect detection equipment
By designing the surface defect detection equipment of the coil material, using the camera module to capture and control center to process images, and the positioner marks the defects, the problems of low manual detection efficiency and poor accuracy in the prior art are solved, and faster and more accurate detection effects are achieved.
Patent Information
- Application Number
- CN202421047399.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing surface defect detection of coil materials mainly relies on artificial vision, which has low efficiency, poor accuracy, and high operating strength, which can easily lead to low yield and eye fatigue.
A coil surface defect detection device is designed, including a first winding assembly, a second winding assembly and a detection assembly. The detection component consists of a detection bracket, an imaging module, a control center and a locator. The coil image is taken through the imaging module. The control center processes the image and transmits a signal to the locator. The locator marks the coil.
It improves detection speed and accuracy, reduces the operator's operation difficulty, enhances the detection effect, reduces the operator's workload, and improves the detection convenience.
Smart Images

Figure CN222812772U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of detection equipment, and in particular to a coil surface defect detection equipment. Background Art
[0002] Coiled materials include metal coils (such as steel coils, aluminum coils), plastic coils (such as PVC polyvinyl chloride coils, PE polyethylene coils, PP polypropylene coils, PU polyurethane coils), paper rolls, cloth, leather, etc.
[0003] Taking artificial leather as an example, the production process generally includes raw material preparation, mixing and modulation, coating, embossing, drying, coating treatment, cutting and molding, inspection, packaging and other steps. All processes may produce some defects on the surface of the final product. The main defects include white spots, black spots, pits, convex bulges, damage, tearing, rotten glue, dirt, streaks, lines, prints, wrinkles, etc. The minimum size of the defect is about 0.2mm.
[0004] At present, most inspection methods are manual visual inspection, which has low efficiency and is not adapted to manual visual inspection of each meter. The roll speed should not be too fast. The widest width of artificial leather roll is about 1.6m. One inspection station often requires two manual inspections. The yield is low, and very small defects are difficult for the human eye to identify. The yield is affected by subjective human factors, the work intensity is high, and the inspection station often needs to identify under strong light conditions, which makes the human eye easily fatigued for a long time. Utility Model Content
[0005] The purpose of the present application is to provide a coil surface defect detection device, which improves the detection speed and accuracy and reduces the operation difficulty for the operator compared to manual detection.
[0006] To this end, an embodiment of the present application provides a surface defect detection device for a coiled material, comprising: a first winding assembly, comprising a first winding roller; a second winding assembly, which is spaced apart from the first winding assembly, the second winding assembly comprising a second winding roller, and a coiled material is arranged between the first winding roller and the second winding roller; a detection assembly, which is arranged between the first winding assembly and the second winding assembly, the detection assembly comprising a detection bracket, a camera module, a control center and a locator, the coiled material passes through the detection bracket, the camera module is arranged on the detection bracket with the camera end facing the coiled material, the locator is arranged on the detection bracket with the output end facing the coiled material, the camera module, the locator and the control center are electrically connected; the camera module transmits the captured image to the control center, and the control center processes the image and transmits a signal to the locator so that the locator can mark the coiled material.
[0007] In a possible implementation, the camera module includes a camera and a mounting base, the camera is connected to the mounting base, and the mounting base is detachably connected to the detection bracket.
[0008] In a possible implementation, the detection bracket is provided with a slide groove along its length direction, a slider is provided in the slide groove, the slider reciprocates along the length direction of the slide groove, and the slider is detachably connected to the mounting seat.
[0009] In a possible implementation, the mounting seat is provided with an adjustment hole, the length direction of the adjustment hole is perpendicular to the length direction of the detection bracket, and also includes a fixing member, the fixing member passes through the adjustment hole and is detachably connected to the slider, and the fixing member adjusts the position of the mounting seat and the detection bracket by the position of the adjustment hole.
[0010] In a possible implementation, the detection component further includes an encoder disposed on the detection bracket, the encoder is electrically connected to the camera module and the control center, and the encoder is used to record the speed and length of the coil.
[0011] In a possible implementation, a display component is further included on the detection bracket, the display component includes a display, a mouse and a keyboard, the display is electrically connected to the control center, and the mouse, the keyboard and the display are electrically connected.
[0012] In a possible implementation, the detection assembly further includes an illuminator disposed on the detection bracket, an output end of the illuminator faces the coil, and / or the illuminator is electrically connected to the control center.
[0013] In a possible implementation manner, it further includes an alarm arranged on the detection bracket, and the alarm is electrically connected to the control center.
[0014] In a possible implementation, the alarm includes a three-color light, one color of the three-color light is used to indicate that the detection device is in a standby state, one color of the three-color light is used to indicate that the surface of the coil is normal, and one color of the three-color light is used to indicate that a defect occurs on the surface of the coil.
[0015] In a possible implementation, it further includes a protective shell, which covers the camera module, the positioner and the illuminator.
[0016] According to the coil surface defect detection device provided by the embodiment of the present application, it includes a first winding assembly, a second winding assembly and a detection assembly, the first winding assembly includes a first winding roller; the second winding assembly is arranged at an interval with the first winding assembly, the second winding assembly includes a second winding roller, and a coil is arranged between the first winding roller and the second winding roller; the detection assembly is arranged between the first winding assembly and the second winding assembly, the detection assembly includes a detection bracket, a camera module, a control center and a locator, the coil passes through the detection bracket, the camera module is arranged on the detection bracket and the camera end faces the coil, the locator is arranged on the detection bracket and the output end faces the coil, the camera module, the locator and the control center are electrically connected; the camera module transmits the image captured to the control center, the control center processes the image and transmits the signal to the locator, so that the locator can mark the coil. Compared with manual detection, the coil surface defect detection device improves the detection speed and accuracy and reduces the difficulty of operation for the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0020] Figure 1 A schematic diagram showing a coil surface defect detection device provided in an embodiment of the present application;
[0021] Figure 2 A partial view of the detection component provided in the embodiment of the present application is shown. Figure 1 ;
[0022] Figure 3 Show Figure 2 An enlarged schematic diagram of part A is shown;
[0023] Figure 4 A partial view of the detection component provided in the embodiment of the present application is shown. Figure 2 .
[0024] Description of reference numerals:
[0025] 1. First winding assembly; 11. First winding roller; 12. First bracket; 13. First driving member; 2. Second winding assembly; 21. Second winding roller; 22. Second bracket; 23. Second driving member; 31. Detection bracket; 311. Slide groove; 312. Slider; 313. Workbench; 32. Camera module; 321. Camera; 322. Mounting seat; 3221. Adjustment hole; 33. Control center; 34. Positioner; 35. Encoder; 36. Illuminator; 4. Coil; 5. Display assembly; 51. Display; 52. Mouse; 53. Keyboard; 6. Three-color light; 7. Protective shell. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0027] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0028] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.
[0029] Figure 1 A schematic diagram showing a coil surface defect detection device provided in an embodiment of the present application is shown. Figure 2 A partial view of the detection component provided in the embodiment of the present application is shown. Figure 1 , Figure 3 Show Figure 2 The enlarged schematic diagram of part A is shown. Figure 4 A partial view of the detection component provided in the embodiment of the present application is shown. Figure 2 .
[0030] like Figures 1 to 4 As shown, an embodiment of the present application provides a coil surface defect detection device including a first winding component 1, a second winding component 2 and a detection component, the first winding component 1 including a first winding roller 11; the second winding component 2 is spaced apart from the first winding component 1, the second winding component 2 includes a second winding roller 21, and a coil 4 is arranged between the first winding roller 11 and the second winding roller 21; the detection component is arranged between the first winding component 1 and the second winding component 2, the detection component includes a detection bracket 31, a camera module 32, a control center 33 and a positioner 34, the coil 4 passes through the detection bracket 31, the camera module 32 is arranged on the detection bracket 31 with the camera end facing the coil 4, the positioner 34 is arranged on the detection bracket 31 with the output end facing the coil 4, the camera module 32, the positioner 34 are electrically connected to the control center 33; the camera module 32 transmits the captured image to the control center 33, the control center 33 processes the image and then transmits the signal to the positioner 34, so that the positioner 34 can mark the coil 4.
[0031] It should be understood that the coil surface defect detection equipment includes a first winding component 1 and a second winding component 2. The first winding component 1 includes a first winding roller 11, a first bracket 12 and a first driving member 13. The first winding roller 11 is arranged at the first bracket 12. The first winding roller 11 and the first bracket 12 can be connected in a detachable manner. The first driving member 13 is also arranged at the first bracket 12. The output end of the first driving member 13 is used to connect with the first winding roller 11, so as to drive the first winding roller 11 to rotate, wherein the first driving member 13 can be a motor.
[0032] The second winding assembly 2 includes a second winding roller 21, a second bracket 22 and a second driving member 23. The second winding roller 21 is arranged at the second bracket 22. The second winding roller 21 and the second bracket 22 can be connected in a detachable manner. The second driving member 23 is also arranged at the second bracket 22. The output end of the second driving member 23 is used to connect with the second winding roller 21, so as to drive the second winding roller 21 to rotate, wherein the second driving member 23 can be a motor. The first bracket 12 and the second bracket 22 are arranged at intervals, so that the first winding assembly 1 and the second winding assembly 2 are arranged at intervals.
[0033] The coil 4 is arranged between the first winding roller 11 and the second winding roller 21, and one of the first winding roller 11 and the second winding roller 21 is used to release the coil 4, and the other is used to reel in the coil 4. In one example, the first winding roller 11 rotates to release the coil 4, and the second winding roller 21 rotates to reel in the coil 4, and the first winding roller 11 and the second winding roller 21 rotate simultaneously and at the same speed.
[0034] The detection component includes a detection bracket 31, a camera module 32, a control center 33 and a positioner 34. The detection bracket 31 is arranged between the first bracket 12 and the second bracket 22, and the detection bracket 31 is spaced apart from the first bracket 12 and the second bracket 22 respectively. A rotating roller for the coil 4 to pass through is arranged at the detection bracket 31, and a workbench 313 for the coil 4 to unfold is also arranged. The setting of the workbench 313 can facilitate the detection of the coil 4. The coil 4 passes through the rotating roller and moves at the workbench 313 during the working process.
[0035] The camera module 32 is arranged at the detection bracket 31, and the camera end of the camera module 32 faces the workbench 313, so that the camera module 32 can take pictures or videos of the coil 4. The control center 33 can be arranged at the detection bracket 31, or it can be arranged separately, which is not limited by this application. In one example, the control center 33 is arranged on the ground, and the control center 33 is an electric control cabinet, which contains a variety of control components, computers, etc., and is a storage, control and computing center for the equipment. The locator 34 is arranged at the detection bracket 31, and can be fixed or detachably connected, which is not limited by this application. The output end of the locator 34 faces the workbench 313, and the locator 34 can mark the defects of the coil 4. Among them, the locator 34 can be a red laser positioning light, or it can be an infrared sensor or other locator, which is not limited by this application.
[0036] The camera module 32 and the positioner 34 are both electrically connected to the control center 33, and the first drive member 13 and the second drive member 23 are both electrically connected to the control center 33. When in use, the first drive member 13 and the second drive member 23 drive the first winding roller 11 and the second winding roller 21 to rotate, and the coil 4 moves at the workbench 313. At this time, the camera module 32 takes a video or a real-time photo of the coil 4, and the video or photo obtained is transmitted to the control center 33. The control center 33 processes the picture to obtain a signal, and then transmits the signal to the positioner 34. If there is a defect in the coil 4, the first drive member 13 and the second drive member 23 stop working, and the positioner 34 marks the position where the defect occurs in the coil 4 for easy identification by the operator.
[0037] Compared with manual inspection, the coil surface defect inspection equipment used in this application is more accurate and has a faster inspection speed, which improves the inspection effect, reduces the operator's inspection workload, and improves the convenience of inspection.
[0038] Reference Figure 2 and Figure 3 In some optional embodiments, the camera module 32 includes a camera 321 and a mounting seat 322, the camera 321 is connected to the mounting seat 322, and the mounting seat 322 is detachably connected to the detection bracket 31. The camera module 32 includes the camera 321, and the camera 321 can be a camera or a video recorder that can be used to shoot the coil 4, and the present application does not limit it. The mounting seat 322 is detachably connected to the detection bracket 31, and can be connected by a connecting piece such as a bolt. The detachable connection between the mounting seat 322 and the detection bracket 31 can facilitate the replacement of the camera module 32, and also facilitate the adjustment of the position of the camera module 32.
[0039] Among them, the present application is provided with at least two camera modules 32, and the number can be two, three or other numbers. The present application does not impose any restrictions. The setting of at least two camera modules 32 can increase the detection range and improve the detection effect.
[0040] In some optional embodiments, the detection bracket 31 is provided with a slide groove 311 along its length direction, a slider 312 is provided in the slide groove 311, the slider 312 reciprocates along the length direction of the slide groove 311, and the slider 312 is detachably connected to the mounting seat 322. The detection bracket 31 is provided with a slide groove 311, the slide groove 311 is a T-shaped groove, and the slider 312 is a T-shaped block, so as to prevent the slider 312 from falling off the slide groove 311, the slider 312 can reciprocate along the length direction of the slide groove 311, and the mounting seat 322 is detachably connected to the slider 312, so that the position of the camera module 32 at the detection bracket 31 can be adjusted to improve the detection effect.
[0041] In some optional embodiments, the mounting seat 322 is provided with an adjustment hole 3221, the length direction of the adjustment hole 3221 is perpendicular to the length direction of the detection bracket 31, and also includes a fixing member, the fixing member passes through the adjustment hole 3221 and is detachably connected to the slider 312, and the fixing member adjusts the position of the mounting seat 322 and the detection bracket 31 at the position of the adjustment hole 3221. The mounting seat 322 is provided with an adjustment hole 3221, the adjustment hole 3221 is a long hole, the adjustment hole 3221 extends along the length direction of the mounting seat 322, and the adjustment hole 3221 is perpendicular to the detection bracket 31. The fixing member passes through the adjustment hole 3221 and is detachably connected to the slider 312, that is, when the fixing member is installed with the slider 312, the position of the fixing member in the adjustment hole 3221 can be adjusted, and the position of the camera module 32 can be further adjusted to improve the detection effect. Among them, the fixing member can be a bolt.
[0042] Furthermore, each mounting seat 322 is provided with two adjustment holes 3221 , and each adjustment hole 3221 corresponds to a fixing member, thereby improving the stability of the installation of the mounting seat 322 and the slider 312 .
[0043] In some optional embodiments, the detection component also includes an encoder 35 arranged on the detection bracket 31, the encoder 35 is electrically connected to the camera module 32 and the control center 33, and the encoder 35 is used to record the speed and length of the coil 4. The encoder 35 is connected to the detection bracket 31, and the connection method can be a detachable connection or a fixed method, which is not limited by this application. The output end of the encoder 35 faces the coil 4, and is used to record the speed and length of the coil 4. The encoder 35 is electrically connected to the camera module 32. When the encoder 35 records that the speed of the coil 4 is zero, the camera module 32 does not work to avoid the camera module 32 from shooting at the same position of the coil 4. The encoder 35 is electrically connected to the control center 33, and the speed and length of the coil 4 can be fed back to the control center 33, so that the operator can know it, and it is also convenient for the operator to control the running speed of the coil 4.
[0044] The detection bracket 31 is provided with a slide rail at the installation position of the encoder 35, and a sliding block is provided in the slide rail. The encoder 35 is detachably connected to the sliding block through a mounting plate, and a mounting hole is provided at the mounting plate. The mounting hole is a long hole, and a bolt passes through the mounting hole and is detachably connected to the sliding block. The encoder 35 can also adjust the position of the encoder 35 along the length direction of the detection bracket 31 and the length direction of the mounting hole, so that the encoder 35 can work better.
[0045] In some optional embodiments, a display assembly 5 is further included which is arranged on the detection bracket 31. The display assembly 5 includes a display 51, a mouse 52 and a keyboard 53. The display 51 is electrically connected to the control center 33, and the mouse 52 and the keyboard 53 are electrically connected to the display 51. The control center 33 can feed back the status of the whole machine to the display 51. The setting of the display assembly 5 is convenient for the operator to understand the status of the whole machine, and also convenient for the operator to operate the display 51 through the mouse 52 and the keyboard 53, and then control the control center 33 to control the whole machine.
[0046] Reference Figure 2-Figure 4 In some optional embodiments, the detection assembly further includes an illuminator 36 disposed on the detection bracket 31, and the output end of the illuminator 36 faces the coil 4. The illuminator 36 is connected to the detection bracket 31, and can be connected in a detachable or fixed manner, which is not limited in this application. The output end of the illuminator 36 faces the coil 4, so that the illuminator 36 can illuminate the coil 4, thereby improving the detection effect of the coil 4.
[0047] In some optional embodiments, the illuminator 36 is electrically connected to the control center 33, so that the illuminator 36 can be controlled by the control center 33, thereby improving the convenience of the operator's operation.
[0048] Reference Figure 1 In some optional embodiments, an alarm is further included on the detection bracket 31, and the alarm is electrically connected to the control center 33. The alarm can be an alarm light or an alarm bell or an alarm whistle that can make a sound, and the present application does not limit it. The alarm is electrically connected to the control center 33. When the coil 4 is detected to have a defect, the control center 33 sends a signal to the alarm, so that the alarm sends an alarm signal, which is convenient for the operator to know, and improves the convenience of the operator.
[0049] In some optional embodiments, the alarm includes a three-color light 6, one color of the three-color light 6 is used to indicate that the detection device is in a standby state, one color of the three-color light 6 is used to indicate that the surface of the coil 4 is normal, and one color of the three-color light 6 is used to indicate that there is a defect on the surface of the coil 4. The colors of the three-color light 6 can be red, green and yellow, and each color corresponds to a different situation. The specific color and specific situation can be set according to the operator's habits. The setting of the three-color light 6 can improve the operator's judgment of the specific situation of the present application and further improve the convenience of the operator's operation.
[0050] In some optional embodiments, a protective housing 7 is further included, and the protective housing 7 covers the camera module 32, the positioner 34 and the illuminator 36. The protective housing 7 is made of cold-rolled steel plate, bent and painted, and fixed to the detection bracket 31 by screws to prevent dust and light, and protect the important internal components.
[0051] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0052] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0053] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A coil surface defect detection device, characterized in that: include: A first winding assembly includes a first winding roller; A second winding assembly is spaced apart from the first winding assembly, the second winding assembly comprises a second winding roller, and a coil is arranged between the first winding roller and the second winding roller; A detection component is arranged between the first winding component and the second winding component, the detection component comprises a detection bracket, a camera module, a control center and a positioner, the coil passes through the detection bracket, the camera module is arranged on the detection bracket with the camera end facing the coil, the positioner is arranged on the detection bracket with the output end facing the coil, and the camera module, the positioner and the control center are electrically connected; The camera module transmits the captured image to the control center, and the control center processes the image and transmits the signal to the locator so that the locator can mark the coil.
2. The coil surface defect detection device according to claim 1, characterized in that: The camera module includes a camera and a mounting seat, the camera is connected to the mounting seat, and the mounting seat is detachably connected to the detection bracket.
3. The coil surface defect detection device according to claim 2, characterized in that: The detection bracket is provided with a slide groove along its length direction, a slider is provided in the slide groove, the slider reciprocates along the length direction of the slide groove, and the slider is detachably connected to the mounting seat.
4. The coil surface defect detection device according to claim 3, characterized in that: The mounting seat is provided with an adjustment hole, the length direction of the adjustment hole is perpendicular to the length direction of the detection bracket, and also includes a fixing piece, the fixing piece passes through the adjustment hole and is detachably connected to the slider, and the fixing piece adjusts the position of the mounting seat and the detection bracket by the position of the adjustment hole.
5. The coil surface defect detection device according to claim 1, characterized in that: The detection component also includes an encoder arranged on the detection bracket, the encoder is electrically connected to the camera module and the control center, and the encoder is used to record the speed and length of the coil.
6. The coil surface defect detection device according to claim 1, characterized in that: It also includes a display component arranged on the detection bracket, the display component includes a display, a mouse and a keyboard, the display is electrically connected to the control center, and the mouse, the keyboard and the display are electrically connected.
7. The coil surface defect detection device according to claim 1, characterized in that: The detection component further comprises an illuminator arranged on the detection bracket, the output end of the illuminator faces the coil, and / or the illuminator is electrically connected to the control center.
8. The coil surface defect detection device according to claim 1, characterized in that: It also includes an alarm arranged on the detection bracket, and the alarm is electrically connected to the control center.
9. The coil surface defect detection device according to claim 8, characterized in that: The alarm includes a three-color light, one color of the three-color light is used to indicate that the detection device is in a standby state, one color of the three-color light is used to indicate that the surface of the coil is normal, and one color of the three-color light is used to indicate that a defect occurs on the surface of the coil.
10. The coil surface defect detection device according to claim 7, characterized in that: It also includes a protective shell, which covers the camera module, the positioner and the illuminator.