Detection device

Abstract

The application relates to a detection device. It comprises a support base, a sand belt conveying mechanism and a defect detection mechanism. The sand belt conveying mechanism is arranged on the support base and is used for conveying a sand belt; the defect detection mechanism comprises a light signal emitter and a light signal receiver arranged on the support base, and the light signal emitter and the light signal receiver are arranged on opposite sides of the sand belt along the thickness direction of the sand belt; when the sand belt is in an intact state, the light signal emitted by the light signal emitter is blocked by the sand belt; when the sand belt is in a broken state, the light signal emitted by the light signal emitter is received by the light signal receiver. When the sand belt is transversely broken, the light signal emitted by the light signal emitter is no longer blocked by the sand belt and is received by the light signal receiver, so that the detection device can identify that the sand belt is in a broken state, and the state identification can be completed in a short time after the sand belt is broken. Compared with manual inspection, the detection device is faster and more accurate, and can avoid continuous damage of a photovoltaic frame caused by a broken sand belt due to detection delay.

Description

Technical Field

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

[0002] The sanding belt on the corner file is prone to lateral breakage. The transmission mechanism of the corner file continues to operate, and the broken sanding belt fragments will rub violently against the photovoltaic frame under the action of mechanical inertia, causing obvious scratches on the surface of the photovoltaic frame and resulting in appearance defects in the photovoltaic module products.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] Therefore, it is necessary to provide a detection device to address the problem that the sanding belt on the corner filing machine is prone to transverse breakage, while the transmission mechanism of the corner filing machine continues to operate. The broken sanding belt fragments, under the action of mechanical inertia, will violently rub against the photovoltaic frame, causing obvious scratches on the surface of the photovoltaic frame and resulting in appearance defects in the photovoltaic module products.

[0005] A detection device, comprising:

[0006] Support base;

[0007] A sanding belt conveyor mechanism is provided on the support base, and the sanding belt conveyor mechanism is used to convey sanding belts;

[0008] The defect detection mechanism includes a light signal transmitter and a light signal receiver disposed on the support base. The light signal transmitter and the light signal receiver are respectively disposed on opposite sides of the sanding belt along its own thickness direction. When the sanding belt is in an intact state, the light signal emitted by the light signal transmitter is blocked by the sanding belt. When the sanding belt is in a broken state, the light signal emitted by the light signal transmitter is received by the light signal receiver.

[0009] In one embodiment, the optical signal transmitter includes a first bracket and an optical signal transmitting unit. The first bracket is disposed on the support base, and the optical signal transmitting unit is movably connected to the first bracket along the width direction of the sanding belt.

[0010] In one embodiment, the first bracket has a first strip-shaped through hole extending along the width of the sanding belt, and the optical signal transmitting unit has a first mounting hole extending through it. The optical signal transmitting unit is connected to the first bracket by passing through both the first mounting hole and the first strip-shaped through hole via a first fastener.

[0011] In one embodiment, the optical signal receiver includes a second bracket and an optical signal receiving unit, the second bracket being disposed on the support base, and the optical signal receiving unit being movably connected to the second bracket along the width direction of the sanding belt.

[0012] In one embodiment, the second bracket has a second strip-shaped through hole extending along the width direction of the sanding belt, and the optical signal receiving unit has a second mounting hole extending through it. The optical signal receiving unit is connected to the second bracket by passing through both the second mounting hole and the second strip-shaped through hole via a second fastener.

[0013] In one embodiment, the detection device further includes a sanding belt tensioning mechanism, which is disposed on the support base and is used to tension the sanding belt.

[0014] In one embodiment, the sanding belt tensioning mechanism includes a tensioning wheel and a tensioning bracket. The tensioning bracket is movably mounted on the support base, and the tensioning wheel is rotatably connected to the tensioning bracket. The tensioning wheel is used to abut against the sanding belt.

[0015] In one embodiment, the tensioning bracket includes a mounting base, a movable base, and a screw. The tensioning wheel is rotatably connected to the movable base, the screw is connected to the movable base, the mounting base is disposed on the support base, the mounting base is provided with a through screw hole, and the screw is connected to the through screw hole.

[0016] In one embodiment, the movable seat is provided with a third through hole extending along the length of the screw, the support base is provided with a third mounting hole, and the movable seat is connected to the support base by passing through both the third through hole and the third mounting hole via a third fastener.

[0017] In one embodiment, the sanding belt conveyor includes a drive reel and a driven reel disposed on the support base. The drive reel is driven to rotate about its own axis. The axes of the drive reel and the driven reel are parallel to the height direction of the support base. The sanding belt is wound around both the drive reel and the driven reel.

[0018] The aforementioned detection device has its optical signal transmitter and receiver mounted on opposite sides of the abrasive belt's thickness direction, with their optical paths intersecting the belt's running path. During normal belt transport, the intact belt body precisely blocks the optical signal emitted by the transmitter, preventing the receiver from receiving the signal, and the device determines the belt is in normal condition. When the belt breaks laterally, creating a gap, the optical signal emitted by the transmitter is no longer blocked and is directly received by the receiver through the gap, allowing the detection device to identify the belt as broken. Detection by a defect inspection agency allows for rapid condition identification within a short time after belt breakage, which is faster and more accurate than manual inspection, preventing continuous damage to the photovoltaic frame caused by delayed detection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of a detection device provided in an embodiment of this application.

[0021] Figure 2 This is a three-dimensional schematic diagram of a defect detection mechanism provided in an embodiment of this application.

[0022] Figure 3 This is a three-dimensional schematic diagram of a belt tensioning mechanism provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached drawings: 100, Detection device; 1, Support base; 2, Sanding belt conveyor mechanism; 21, Driving reel; 22, Driven reel; 23, Sanding belt; 3, Defect detection mechanism; 31, Optical signal transmitter; 311, First bracket; 3111, First strip-shaped through hole; 312, Optical signal transmitting unit; 3121, First mounting hole; 313, First fastener; 32, Optical signal receiver; 321, Second bracket; 3211, Second strip-shaped through hole 322, Optical signal receiving unit; 3221, Second mounting hole; 323, Second fastener; 33, Sanding belt proximity switch; 4, Sanding belt tensioning mechanism; 41, Tensioning wheel; 42, Tensioning bracket; 421, Mounting base; 4211, First fixing hole; 422, Movable base; 4221, Third strip-shaped through hole; 423, Screw; 424, Third fastener; 425, Nut; 426, Fixing component; 427, Movable strip; 4271, Auxiliary hole. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] The sanding belt on the corner file is prone to lateral breakage. The transmission mechanism of the corner file continues to operate, and the broken sanding belt fragments will rub violently against the photovoltaic frame under the action of mechanical inertia, causing obvious scratches on the surface of the photovoltaic frame and resulting in appearance defects in the photovoltaic module products.

[0026] Please see Figure 1 To address the aforementioned problems, this application provides a detection device 100, including a support base 1, a sanding belt conveyor 2, and a defect detection mechanism 3. The sanding belt conveyor 2 is mounted on the support base 1 and is used to convey a sanding belt 23. The defect detection mechanism 3 includes a light signal transmitter 31 and a light signal receiver 32 mounted on the support base 1. The light signal transmitter 31 and the light signal receiver 32 are respectively located on opposite sides of the sanding belt 23 along its thickness direction. When the sanding belt 23 is intact, the light signal emitted by the light signal transmitter 31 is blocked by the sanding belt 23. When the sanding belt 23 is broken, the light signal emitted by the light signal transmitter 31 is received by the light signal receiver 32. It is understood that the light signal transmitter 31 and the light signal receiver 32 are respectively installed on opposite sides of the sanding belt 23 along its thickness direction, and their optical paths intersect with the running path of the sanding belt 23. When the sanding belt 23 is being transported normally, its intact body precisely blocks the light signal emitted by the light signal transmitter 31. At this time, the light signal receiver 32 cannot receive the signal, and the device determines that the sanding belt 23 is in a normal state. When the sanding belt 23 experiences a transverse break, forming a gap, the light signal emitted by the light signal transmitter 31 is no longer blocked by the sanding belt 23 and is directly received by the light signal receiver 32 through the gap. The detection device 100 can then identify that the sanding belt 23 is in a broken state. Detection by the defect detection mechanism 3 allows for state identification to be completed within a short time after the sanding belt 23 breaks, which is faster and more accurate than manual inspection, avoiding continuous damage to the photovoltaic frame caused by the broken sanding belt 23 due to detection delays.

[0027] It should be noted that the optical signal transmitter 31 and optical signal receiver 32 are mainly for detecting lateral breaks in the abrasive belt 23. A lateral break refers to a crack extending along the length of the abrasive belt 23. When a lateral break occurs in the abrasive belt 23, the abrasive belt 23 will continue to be conveyed under the action of the abrasive belt conveyor 2, and the broken fragments of the abrasive belt 23 will continue to rub against the photovoltaic frame, thereby causing wear to the photovoltaic frame.

[0028] Please see Figure 2 In some embodiments, the optical signal transmitter 31 includes a first bracket 311 and an optical signal transmitting unit 312. The first bracket 311 is disposed on the support base 1, and the optical signal transmitting unit 312 is movably connected to the first bracket 311 along the width direction of the sanding belt 23. Thus, the position of the optical signal transmitting unit 312 relative to the width direction of the sanding belt 23 can be adjusted.

[0029] In an optional embodiment, the optical signal transmitting unit 312 can be slidably connected to the first bracket 311 via a slide rail slider or a sleeve bushing.

[0030] Please see Figure 2 In some embodiments, the first bracket 311 has a first strip-shaped through hole 3111 extending along the width of the sanding belt 23, and the optical signal transmitting unit 312 has a first mounting hole 3121 extending through it. The optical signal transmitting unit 312 is connected to the first bracket 311 by a first fastener 313 passing through both the first mounting hole 3121 and the first strip-shaped through hole 3111. By connecting the first fastener 313 to different positions in the first strip-shaped through hole 3111, the position of the optical signal transmitting unit 312 relative to the width of the sanding belt 23 can be changed, resulting in a simple structure and convenient operation.

[0031] In an optional implementation, the optical signal transmitting unit 312 can be an optical fiber transmitter, a laser diode, or the like. The optical signal transmitting unit 312 is commercially available, and its specific structure will not be described in detail here.

[0032] Please see Figure 2 In some embodiments, the optical signal receiver 32 includes a second bracket 321 and an optical signal receiving unit 322. The second bracket 321 is disposed on the support base 1, and the optical signal receiving unit 322 is movably connected to the second bracket 321 along the width direction of the sanding belt 23. Thus, the position of the optical signal receiving unit 322 relative to the width direction of the sanding belt 23 can be adjusted.

[0033] In an optional implementation, the optical signal receiving unit 322 can be slidably connected to the second bracket 321 via a slide rail slider or a sleeve bushing.

[0034] Please see Figure 2In some embodiments, the second bracket 321 has a second through hole 3211 extending along the width of the sanding belt 23, and the optical signal receiving unit 322 has a second mounting hole 3221 extending through it. The optical signal receiving unit 322 is connected to the second bracket 321 by a second fastener 323 passing through both the second mounting hole 3221 and the through hole 3211. By connecting the second fastener 323 to different positions of the second through hole, the position of the optical signal receiving unit 322 relative to the width of the sanding belt 23 can be changed, resulting in a simple structure and convenient operation.

[0035] In an optional implementation, the optical signal receiving unit 322 can be an optical fiber receiver, a tunable optical receiver, or the like. The optical signal receiving unit 322 is commercially available, and its specific structure will not be described in detail here.

[0036] Please see Figure 1 In an optional embodiment, the defect detection mechanism 3 further includes a sanding belt proximity switch 33, which is mounted on the support base 1. The sanding belt proximity switch 33 is used to detect vertical breaks in the sanding belt 23.

[0037] It should be noted that a vertical fracture of the sanding belt 23 refers to a fracture extending along the width of the sanding belt 23. A vertical fracture results in a notch at the edge of the sanding belt 23, which passes sequentially through the sensing area of ​​the sanding belt proximity switch 33 as the sanding belt 23 moves. When the notch passes, the sensing area of ​​the sanding belt proximity switch 33 suddenly loses the obstruction of the sanding belt 23, and the signal jumps from a state with sanding belt 23 present to a state without sanding belt 23, indicating that a vertical fracture of the sanding belt 23 has occurred.

[0038] In an optional implementation, the belt proximity switch 33 can be an inductive proximity switch or a capacitive proximity switch, etc., which can be obtained commercially, and its structure will not be described in detail here.

[0039] In an optional embodiment, the defect detection mechanism 3 further includes a controller, which is electrically connected to the light signal transmitter 31, the light signal receiver 32, the sanding belt proximity switch 33, and the sanding belt conveyor 2. When the light signal receiver 32 receives the light signal emitted by the light signal transmitter 31, it transmits the signal to the controller, which then controls the sanding belt conveyor 2 to stop operating. When the sanding belt proximity switch 33 detects a vertical break in the sanding belt 23, it transmits the signal to the controller, causing the controller to control the sanding belt conveyor 2 to stop operating, thereby preventing the sanding belt 23 from abrading the photovoltaic frame.

[0040] In an optional embodiment, when the sanding belt 23 is conveyed in a horizontal direction, the optical signal transmitter 31 and the optical signal receiver 32 may be located on the upper and lower sides of the sanding belt 23 along its thickness direction; or, when the sanding belt 23 is conveyed in a vertical direction, the optical signal transmitter 31 and the optical signal receiver 32 may be located on the left and right sides of the sanding belt 23 along its thickness direction.

[0041] Please see Figure 1 In some embodiments, the sanding belt conveyor 2 includes a drive reel 21 and a driven reel 22 mounted on a support base 1. The drive reel 21 is driven to rotate about its own axis. The axes of the drive reel 21 and the driven reel 22 are parallel to the height direction of the support base 1. The sanding belt 23 is wound around both the drive reel 21 and the driven reel 22. This allows the sanding belt 23 to be conveyed vertically. The optical signal transmitter 31 and the optical signal receiver 32 can be located on the left and right sides of the sanding belt 23 along its thickness direction.

[0042] In an optional embodiment, there may be multiple driven reels 22, which are spaced apart on the support base 1. For example, there may be two, three, four, etc. The sanding belt 23 may be wound on both the driving reel 21 and all the driven reels simultaneously.

[0043] In an optional implementation, the controller can control the drive reel 21 to stop operating.

[0044] Please see Figure 1 In some embodiments, the detection device 100 further includes a sanding belt tensioning mechanism 4, which is mounted on the support base 1 and is used to tension the sanding belt 23. The sanding belt tensioning mechanism 4 ensures the normal transport of the sanding belt 23 and prevents it from becoming loose and wrinkled.

[0045] Please see Figure 3 In some embodiments, the sanding belt tensioning mechanism 4 includes a tensioning wheel 41 and a tensioning bracket 42. The tensioning bracket 42 is movably mounted on the support base 1, and the tensioning wheel 41 is rotatably connected to the tensioning bracket 42. The tensioning wheel 41 is used to abut against the sanding belt 23. The tensioning bracket 42 is movably mounted on the support base 1, and by moving relative to the support base 1, it drives the tensioning wheel 41 to move closer to or further away from the sanding belt 23, thereby adjusting the degree of contact between the tensioning wheel 41 and the sanding belt 23.

[0046] In an optional embodiment, the tensioning bracket 42 can be slidably connected to the support base 1 via a slider rail, or slidably connected to the support base 1 via a bushing sleeve.

[0047] Please see Figure 3In some embodiments, the tensioning bracket 42 includes a mounting base 421, a movable base 422, and a screw 423. A tensioning wheel 41 is rotatably connected to the movable base 422, and the screw 423 is connected to the movable base 422. The mounting base 421 is disposed on the support base 1 and has a through-hole. The screw 423 passes through and is connected to the through-hole. By fixing the screw 423 to different positions, the screw 423 drives the movable base 422 to move relative to the support base 1, thereby causing the movable base 422 to move the tensioning wheel 41 and adjusting the tension of the tensioning wheel 41 against the sanding belt 23.

[0048] Please see Figure 3 In an optional embodiment, the tensioning bracket 42 further includes a nut 425, which is threaded onto the screw 423 and abuts against the mounting base 421. The nut 425 further secures the screw 423 to the mounting base 421, preventing the screw 423 from loosening.

[0049] Please see Figure 3 In an optional embodiment, the mounting base 421 is provided with a first fixing hole 4211 through its own thickness direction, and the support base 1 is provided with a second fixing hole. The mounting base 421 is simultaneously provided with the first fixing hole 4211 and the second fixing hole through the fastener 426, so as to fix the mounting base 421 on the support base 1.

[0050] Please see Figure 3 In an optional embodiment, the first fixing hole 4211 may include two holes, respectively located on the left and right sides of the screw hole along the length of the mounting base 421. Correspondingly, the second fixing hole also includes two holes, each corresponding to one of the first fixing holes 4211. The fixing member 426 also includes two holes, respectively corresponding to one of the first fixing holes 4211 and the second fixing hole on the same side.

[0051] Please see Figure 3 In some embodiments, the movable seat 422 is provided with a third strip-shaped through hole 4221 extending along the length of the screw 423. The support base 1 is provided with a third mounting hole 11. The movable seat 422 is connected to the support base 1 by passing through both the third strip-shaped through hole 4221 and the third mounting hole 11 via a third fastener 424. It is understood that when the screw 423 drives the movable seat 422 to move, the third strip-shaped through hole 4221 of the movable seat 422 moves relative to the support base 1. By passing through both the third strip-shaped through hole 4221 and the third mounting hole 11 via the third fastener 424, the movable seat 422 can be fixed on the support base 1, thereby allowing the movable seat 422 to be fixed at different positions on the support base 1.

[0052] Please see Figure 3In an optional embodiment, the third strip-shaped through hole 4221 includes two holes, which are respectively disposed on both sides of the screw 423 along its axial direction. The third mounting hole 11 also includes two holes, which correspond one-to-one with the third strip-shaped through hole 4221. The third fastener 424 also includes two fasteners, which are respectively disposed on one side of the third strip-shaped through hole 4221 and the third mounting hole 11.

[0053] Please see Figure 3 In an optional embodiment, the tensioning bracket 42 further includes a movable strip 427, which has two spaced-apart auxiliary holes 4271 that are respectively connected to the two third strip-shaped through holes 4221. A third fastener 424 passes through the auxiliary holes 4271, the third strip-shaped through holes 4221, and the third mounting hole 11 in sequence to connect with the movable strip 427, the movable seat 422, and the support base 1. The movable strip 427 further increases the support stability of the movable seat 422 on the tensioning wheel 41, preventing the tensioning wheel 41 from tilting.

[0054] In summary, the detection device 100 provided in this application embodiment can detect both the transverse fracture of the sand belt 23 and the vertical fracture of the sand belt 23, thereby improving the detection effect of the sand belt 23 fracture and reducing the impact of the sand belt 23 on the photovoltaic frame.

[0055] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A detection device (100), characterized in that, include: Support base (1); A sanding belt conveyor (2) is provided on the support base (1) and is used to convey a sanding belt (23). The defect detection mechanism (3) includes a light signal transmitter (31) and a light signal receiver (32) disposed on the support base (1). The light signal transmitter (31) and the light signal receiver (32) are disposed on opposite sides of the sanding belt (23) along its own thickness direction. When the sanding belt (23) is in an intact state, the light signal emitted by the light signal transmitter (31) is blocked by the sanding belt (23). When the sanding belt (23) is in a broken state, the light signal emitted by the light signal transmitter (31) is received by the light signal receiver (32).

2. The detection device (100) according to claim 1, characterized in that, The optical signal transmitter (31) includes a first bracket (311) and an optical signal transmitting unit (312). The first bracket (311) is disposed on the support base (1), and the optical signal transmitting unit (312) is movably connected to the first bracket (311) along the width direction of the sanding belt (23).

3. The detection device (100) according to claim 2, characterized in that, The first bracket (311) has a first strip-shaped through hole (3111) extending through the width of the sanding belt (23), and the optical signal transmitting unit (312) has a first mounting hole (3121) extending through it. The optical signal transmitting unit (312) is connected to the first bracket (311) by passing through the first mounting hole (3121) and the first strip-shaped through hole (3111) simultaneously through the first fastener (313).

4. The detection device (100) according to claim 1, characterized in that, The optical signal receiver (32) includes a second bracket (321) and an optical signal receiving unit (322). The second bracket (321) is disposed on the support base (1), and the optical signal receiving unit (322) is movably connected to the second bracket (321) along the width direction of the sanding belt (23).

5. The detection device (100) according to claim 4, characterized in that, The second bracket (321) is provided with a second strip-shaped through hole (3211) through the width direction of the sanding belt (23), and the optical signal receiving unit (322) is provided with a second mounting hole (3221). The optical signal receiving unit (322) is connected to the second bracket (321) by passing through the second mounting hole (3221) and the second strip-shaped through hole (3211) through the second fastener (323).

6. The detection device (100) according to claim 1, characterized in that, The detection device (100) further includes a sanding belt tensioning mechanism (4), which is located on the support base (1) and is used to tension the sanding belt (23).

7. The detection device (100) according to claim 6, characterized in that, The sanding belt tensioning mechanism (4) includes a tensioning wheel (41) and a tensioning bracket (42). The tensioning bracket (42) is movably mounted on the support base (1). The tensioning wheel (41) is rotatably connected to the tensioning bracket (42). The tensioning wheel (41) is used to abut against the sanding belt (23).

8. The detection device (100) according to claim 7, characterized in that, The tensioning bracket (42) includes a mounting base (421), a movable base (422), and a screw (423). The tensioning wheel (41) is rotatably connected to the movable base (422), and the screw (423) is connected to the movable base (422). The mounting base (421) is provided on the support base (1), and the mounting base (421) has a through screw hole. The screw (423) is connected to the through screw hole.

9. The detection device (100) according to claim 8, characterized in that, The movable seat (422) is provided with a third strip-shaped through hole (4221), which extends along the length of the screw (423). The support base (1) is provided with a third mounting hole (11). The movable seat (422) is connected to the support base (1) by passing through both the third strip-shaped through hole (4221) and the third mounting hole (11) through a third fastener (424).

10. The detection device (100) according to any one of claims 1 to 9, characterized in that, The sanding belt conveyor (2) includes an active reel (21) and a driven reel (22) mounted on the support base (1). The active reel (21) is driven to rotate around its own axis. The axes of the active reel (21) and the driven reel (22) are parallel to the height direction of the support base (1). The sanding belt (23) is wound around both the active reel (21) and the driven reel (22).

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