Device for detecting apparent defects of transmission belt

Abstract

The invention discloses transmission belt appearance defect detection equipment which comprises a rotary feeding device, a feeding mechanism, a material level detection mechanism, a tensioning mechanism, a movable material receiving mechanism, a discharging mechanism and a visual detection structure. The rotary feeding device comprises a base, a lower supporting column and an upper supporting column. The lower supporting column is fixedly arranged on the base, the upper supporting column is rotationally connected with the lower supporting column, and the feeding mechanism comprises a feeding frame, a feeding motor, a feeding sliding block, a feeding sliding way, a material level detection switch, a feeding sliding block, a feeding sliding rail, a feeding telescopic rod, a material level detection rotating block and a light spring. The semi-automatic feeding and discharging device has the beneficial effects that semi-automatic feeding and discharging can be achieved, manual work is partially replaced, and the labor intensity is relieved. The transmission belt comprises but is not limited to a poly V-belt, a synchronous belt, a V-belt and the like used in a transmission system, and the line scanning camera is used for replacing manpower to detect the defects of the transmission belt, so that the omission ratio is reduced, the detection efficiency is improved, and the detection quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission belt detection equipment, and in particular relates to a loading and unloading device. Background Art

[0002] Mechanical transmission is an important part of the industrial foundation. Common mechanical transmission mechanisms include gear transmission, belt transmission, chain transmission, and mechanical continuously variable transmission. In terms of economy and ease of operation, the belt transmission system is the most competitive transmission method. The actual application of belt transmission is to transmit the power or motion generated by the rotation of the motor or engine to the mechanical equipment through the belt transmission system. From giant motors as large as several thousand kilowatts to micro motors as small as less than a few watts or even a few microwatts, from general machinery to automatic equipment, there are applications of belt transmission. According to statistics, in the transmission system with motor as power input, the primary transmission uses belt transmission as high as 50% to 60%. With the advancement of belt transmission technology, it has gradually begun to be used in some precision transmission fields, including 3D printers, robots and other precision machinery.

[0003] There are multiple inspection links in the entire process of transmission belt production, and the final product inspection is the most important and determines the quality of the final product. At present, the surface defect detection of transmission belts in the final link is mostly done manually. To address this problem, an automatic detection device for transmission belt surface defects has been developed, and a matching transmission belt loading and unloading mechanism has been designed in the device. Summary of the invention

[0004] Aiming at the problem that there is no matching loading and unloading mechanism for transmission belt in the prior art, a transmission belt appearance defect detection device is provided.

[0005] A transmission belt appearance defect detection device, It includes a rotary loading device, a feeding mechanism, a material level detection mechanism, a tensioning mechanism, a mobile material receiving mechanism, a material unloading mechanism, and a visual detection structure; The rotary loading device comprises a base, a lower support and an upper support; The lower support is fixed on the base, and the upper support is rotatably connected to the lower support. The feeding mechanism includes a feeding rack, a feeding motor, a feeding slider, a feeding slideway, a material level detection switch, a feeding slider, a feeding slide rail, a feeding telescopic rod, a material level detection rotating block, and a light spring; The feeding slide is arranged on the feeding frame, the feeding slider is connected to the feeding slide in a forward and backward sliding manner, the feeding motor is arranged on the feeding frame, a sprocket is arranged on the feeding frame, a sprocket is arranged on the output shaft of the feeding motor, chains are arranged on the two sprockets, the chain and the feeding slider are fixedly connected, and the feeding motor is installed forward and reversely to drive the feeding slider to slide forward or backward on the feeding slide; The material level detection rotating block includes a lever, a rotating block, a rotating shaft, a detection counterweight block, and a bearing; The rotating shaft is installed on the feeding frame and is located below the front end of the feeding slideway. The bearing is installed on the rotating shaft, and the rotating block is installed on the bearing. A lever is installed at one end of the rotating block, and a detection counterweight is installed at the other end. The material level detection switch is arranged on the feeding rack for sensing and detecting the counterweight block; The push cylinder is arranged on the feeding frame, the rod end of the push cylinder is provided with a feeding slide block, and the feeding slide block is slidably connected with the feeding slide rail.

[0006] The feeding slider has a hole that runs through the front and back, with a small hole diameter at the front and a large hole diameter at the back. A baffle is provided at the rear end of the telescopic rod. The telescopic rod is inserted into the through hole of the feeding slider, and the baffle is engaged at the intersection of the large and small holes to prevent the telescopic rod from sliding out from the front end. A light spring is provided in the large hole of the feeding slider, and the other end of the light spring is pressed tightly against the end surface of the baffle of the telescopic rod. The rear end of the large hole of the feeding slider is blocked to block the rear end of the light spring. A mobile material receiving mechanism, including a mobile frame, a fixed frame, a ball screw driving mechanism, a slider guide mechanism, a support leg, and a material receiving motor; The mobile frame is slidably arranged on the fixed frame through a slider guide mechanism, and the material receiving motor is arranged on the fixed frame, and the mobile frame is driven to slide left and right on the fixed frame through a ball screw driving mechanism; The tensioning mechanism includes a tensioning frame, a tensioning motor, a large tensioning wheel, a small tensioning wheel, a side tensioning wheel, a double-axis cylinder, and a tensioning slide block; The tensioning frame is arranged on the mobile frame, the tensioning slider is slidably arranged on the tensioning frame, the tensioning motor is arranged on the tensioning frame, the tensioning motor drives the tensioning slider to slide up and down through the ball screw nut, the large tensioning wheel is fixedly arranged on the tensioning frame, and the small tensioning wheel is fixedly arranged on the tensioning slider; The double-axis cylinder is arranged on the mobile frame, and a side tensioning wheel is arranged at the end of the extended rod thereof to tension the belt from the side; The unloading mechanism includes a retaining ring, an unloading lever, an unloading shaft, a rotating arm, an unloading bracket, an unloading cylinder, and a swing arm. The unloading bracket is installed on the mobile frame, the unloading shaft is rotatably arranged on the unloading bracket, one end of the swing rod is connected to the unloading shaft, the other end of the swing rod is connected to the unloading lever, the retaining ring is arranged at the connection between the swing rod and the unloading lever, the tail end of the unloading cylinder is rotatably arranged on the mobile frame, the rod end of the unloading cylinder is rotatably connected to the rotating arm, and the other end of the rotating arm is fixedly connected to the unloading shaft; The unloading auxiliary cylinder is installed on the mobile frame through a bracket, and the rod end of the unloading auxiliary cylinder is connected to the push plate; The visual inspection structure is installed on the mobile frame to detect surface defects of the belt.

[0007] The transmission belt appearance defect detection device further comprises a first locking ring, a second locking ring, a first stopper, a second stopper and a locking handle. The first locking ring is fixedly installed on the lower pillar by bolts and nuts, the second locking ring is fixedly installed on the upper pillar by bolts and nuts, the first stopper is fixedly set on the first locking ring, and the second stopper is fixedly set on the second locking ring. The front end of the locking handle is a screw, which passes through the holes of the first stopper and the second stopper, and then the nut is tightened to fix the two.

[0008] Among them, the transmission belt appearance defect detection equipment and the unloading mechanism are each provided with one set on the left and the right, and are symmetrically arranged on both sides of the large tensioning wheel.

[0009] Among them, the transmission belt appearance defect detection equipment also has two unloading auxiliary cylinders, one on the left and one on the right, which are arranged on both sides of the large tensioning wheel.

[0010] Among them, the transmission belt appearance defect detection equipment, the visual detection structure includes a single light source adjustment frame and a double light source adjustment frame installed on the outside of the transmission belt, a belt inner side detection structure installed on the inside of the transmission belt, and a combination of three line scan cameras and a camera slide; The single light source adjustment frame is provided with a fixing frame on one side where the camera slide is installed, and an industrial visual strip light source is installed on the side away from the fixing frame; The dual light source adjustment frame has a camera slide and a fixed frame installed at one end, and two industrial visual strip light sources installed at the other end. The light emitted by the two industrial visual strip light sources is projected onto the transmission belt. A camera slide is installed at one end of the inner side detection structure, and an industrial visual strip light source is installed at the other end. One end of the inner side detection structure with a reflector extends into the inner side of the transmission belt; The single light source adjustment frame and the double light source adjustment frame are respectively installed on the mobile frame.

[0011] Among them, the transmission belt appearance defect detection equipment, the inner side detection structure of the belt includes a base plate, the camera slide is installed on the top of the base plate, and the inner side detection structure of the belt is provided with a light source fixing part for fixing the industrial vision strip light source; the inner side detection structure of the belt is provided with a reflector fixing plate, the lower edge of the reflector fixing plate is fixed on the base plate, the reflector fixing plate is provided with a horizontal plate structure for installing the reflector B, and the reflector A is installed at a corner of the reflector fixing plate; the inner side detection structure of the belt is also provided with a camera mounting plate for adjusting the height of the line scan camera; the reflector A and the reflector B both have an angle of degrees with the inner side of the transmission belt, and the base plate is installed on the movable frame.

[0012] Among them, the transmission belt appearance defect detection equipment, the dual light source adjustment frame includes a light source adjustment frame base plate and a dual light source splint connected to each other, the connection part of the two has three holes evenly spaced apart for adjusting the position of the light source adjustment frame base plate, one side of the light source adjustment frame base plate is connected to the camera slide, and the other side is connected to the fixed frame; the dual light source splint is symmetrically distributed on the left and right, and two arc-shaped ones are also provided on the dual light source splint for installing light source fixing parts, the light source fixing parts are provided with through holes and light source grooves for installing industrial vision strip light sources, and the light emitted by the industrial vision strip light source is made to irradiate the transmission belt at an angle of degrees by adjusting the light source fixing parts.

[0013] Among them, the transmission belt appearance defect detection equipment, the camera slide includes an upper base plate and a lower base plate embedded together, the upper base plate and the lower base plate are both provided with through holes, a line scan camera and a pad are installed on the upper base plate, the lower base plate is installed on the bottom plate of the light source adjustment frame or the bottom plate of the inner side detection structure of the belt, a columnar slide is installed between the upper base plate and the lower base plate to enable the upper base plate and the lower base plate to slide relative to each other, a hinge with a slide is installed on one side of the camera slide, the fixing column is installed in the slide, a spiral micro-rod fixing groove is installed on the lower base plate, a spiral micro-rod is threadedly connected to the spiral micro-rod in the spiral micro-rod fixing groove, and a baffle for preventing the spiral micro-rod from extending is installed on the upper base plate.

[0014] Among them, the transmission belt appearance defect detection equipment, the fixed frame includes a vertical plate, the vertical plate is provided with two rows of long through holes, the bottom of the long through holes is connected with a support rod, the extended end of the support rod is connected with a fixing clamp and extends to the inside thereof, a threaded hole is provided in the fixing clamp, and the gap on the fixing clamp is reduced by inserting a stud, and the dual light source adjustment frame or the inner side detection structure of the belt is fixed on the fixing clamp.

[0015] Among them, the transmission belt appearance defect detection equipment, the industrial visual strip light source has a light source wiring port at one end, and a high-density LED array light bar and a scattering plate at the other side.

[0016] Beneficial effects of the present invention: 1. Semi-automatic loading and unloading can be realized, which partially replaces manual labor and reduces labor intensity. The transmission belts described in the present invention include but are not limited to multi-V belts, synchronous belts, V belts, etc. used in transmission systems.

[0017] 2. A line scan camera with simple structure, low cost, high flexibility, wide dynamic range and high cost performance is used to detect defects on the surface of the transmission belt, which improves the efficiency and speed of image data transmission; a strip light source is used for lighting, and the angle between the light source and the transmission belt is 45 degrees, which reduces the segmentation and recognition difficulty of the image processing algorithm, improves the positioning and measurement accuracy, and ensures the detection efficiency. The present invention uses a line scan camera instead of manual transmission belt defect detection, which reduces the missed detection rate, improves the detection efficiency, and ensures the detection quality.

[0018] 3. Industrial vision bar light sources can distinguish the target information of the measured transmission belt from the background information, and can obtain high-quality, high-contrast images, thereby reducing the difficulty of the image processing algorithm and improving the accuracy and reliability of the system. Using a bar light source for lighting, the light source and the transmission belt are at an angle of 45 degrees, or a smaller angle can be used. This can effectively avoid the strong reflection caused by frontal illumination, and can also achieve high-brightness lighting on the edge. This lighting method is a very widely used lighting method in dimensional measurement and appearance inspection. This can greatly reduce the segmentation and recognition difficulty of the transmission belt surface defect image processing algorithm, improve positioning and measurement accuracy, and thus improve the comprehensive performance of transmission belt surface defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural principle diagram of an embodiment of the present invention; Figure 2 It is a schematic diagram of the rotating device of the present invention; Figure 3 It is a schematic diagram of the feeding mechanism of the present invention; Figure 4 It is a schematic diagram of the feeding mechanism of the present invention; Figure 5 It is a schematic diagram of the material level detection mechanism of the present invention; Figure 6 It is a schematic diagram of the telescopic rod of the present invention; Figure 7 It is a schematic diagram of the material unloading mechanism of the present invention; Figure 8 It is a schematic diagram of the tensioning mechanism of the present invention; Fig. 9 It is a schematic diagram of the mobile material receiving mechanism of the present invention; Fig.10 It is a schematic diagram of the auxiliary mechanism for material feeding of the present invention; Fig.11 It is a schematic diagram of the rotary locking device of the present invention; Fig.12 It is a schematic diagram of the visual detection structure; Fig.13 It is a structural schematic diagram of a camera slide; Fig.14is a schematic diagram of the structure of the fixing frame; Fig.15 It is a structural diagram of an industrial visual strip light source; Fig.16 It is a structural schematic diagram of a dual light source adjustment frame; Fig.17 It is a structural schematic diagram of the inner detection structure. DETAILED DESCRIPTION

[0020] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0021] See also Figure 1-Figure 17 , this embodiment provides a transmission belt appearance defect detection device.

[0022] like Figure 1 As shown, it includes a rotary loading device 001, a feeding mechanism, a material level detection mechanism, a tensioning mechanism, a mobile material receiving mechanism, a material unloading mechanism, and a visual detection structure.

[0023] The rotary loading device 001 includes a base 101 , a lower support 102 , an upper support 105 , a first locking ring 103 , a second locking ring 104 , a first stopper 108 , a second stopper 109 and a locking handle 107 .

[0024] The lower pillar 102 is fixedly arranged on the base 101, the upper pillar 105 is rotatably connected to the lower pillar 102, the first locking ring 103 is fixedly installed on the lower pillar 105 by bolts and nuts, the second locking ring 104 is fixedly installed on the upper pillar 105 by bolts and nuts, the first stopper 108 is fixedly arranged on the first locking ring 103, the second stopper 109 is fixedly arranged on the second locking ring 104, the front end of the locking handle 107 is a screw, after passing through the holes of the first stopper 108 and the second stopper 109, the nut is tightened to fix the two.

[0025] The first stopper 108 and the second stopper 109 can play a role of limiting during the rotation process, and only rotate a specific angle of 90 degrees. After being in place, the locking handle 107 is used to lock.

[0026] like Figure 1 As shown, when loading, the upper support 105 rotates 90 degrees counterclockwise. At this time, the feeding mechanism is outside, and the staff puts the transmission belts on the feeding mechanism one by one. After the manual loading is completed, the upper support 105 rotates 90 degrees clockwise again and returns to Figure 1position and start automatic loading.

[0027] like Figure 3 , 4 As shown, the feeding mechanism includes a feeding frame 300, a feeding motor 301, a feeding slider 302, a feeding slide 303, a material level detection switch 304, a feeding slider 305, a feeding slide rail 306, a feeding telescopic rod 307, a material level detection rotating block 308, and a lightweight spring 309.

[0028] The feeding slide 303 is arranged on the feeding rack 300, the feeding slider 302 is connected to the feeding slide 303 for forward and backward sliding, the feeding motor 301 is arranged on the feeding rack 300, a sprocket is arranged on the feeding rack 300, a sprocket is arranged on the feeding motor 301, chains are arranged on the two sprockets, the chain and the feeding slider 302 are fixedly connected, and the feeding motor 301 is installed forward and reverse to drive the feeding slider 302 to slide forward or backward on the feeding slide 303.

[0029] like Figure 4 As shown, the transmission belts are hung one by one on the feeding slide 303, and the feeding motor 301 rotates to drive the feeding slider 302 to push the transmission belt forward along the feeding slide 303.

[0030] The material level detection rotating block 308 includes a lever 3081 , a rotating block 3082 , a rotating shaft 3083 , a detection counterweight block 3084 , and a bearing 3085 .

[0031] The rotating shaft 3083 is mounted on the feeding rack 300 and is located at the lower front end of the feeding slideway 303. The bearing 3085 is mounted on the rotating shaft 3083. The rotating block 3082 is mounted on the bearing 3085. The lever 3081 is mounted on one end of the rotating block, and the detection counterweight 3084 is mounted on the other end. The material level detection switch 304 is set on the feeding rack 300 for sensing and detecting the counterweight 3084.

[0032] like Figure 4 , 5 As shown, the weight of the detection counterweight block is relatively large. In the absence of a transmission belt, the front lever 3081 tilts up. As the feeding motor 301 rotates to feed and push the transmission belt, the transmission belt slides from the feeding slideway 303 to the lever 3081. Under the action of the weight of the transmission belt, the rotating block 3082 rotates. After the material level detection switch 304 detects the counterweight block 3084, it receives a signal and instructs the feeding motor 301 to stop. The transmission belt falls onto the feeding telescopic rod 307.

[0033] like Figure 4 As shown, the pushing cylinder 002 is arranged on the feeding rack 300, and the feeding slider 305 is arranged at the rod end of the pushing cylinder 002, and the feeding slider 305 is slidably connected with the feeding slide rail 306.

[0034] like Figure 6 As shown, the feeding slider 305 has a hole running through the front and back, the front hole diameter is small, and the rear hole diameter is large. The rear end of the telescopic rod 307 is provided with a baffle, and the telescopic rod 307 is inserted into the through hole of the feeding slider 305. The baffle is engaged at the intersection of the large and small holes to prevent the telescopic rod 307 from sliding out from the front end. A lightweight spring 309 is arranged in the large hole of the feeding slider 305, and the other end of the lightweight spring is pressed tightly against the end face of the baffle of the telescopic rod 307. The rear end of the large hole of the feeding slider 305 is blocked to block the rear end of the lightweight spring 309.

[0035] When the front end of the telescopic rod 307 receives pressure, it will slide to the left, compressing the light spring. When there is no pressure, the light spring will bounce the telescopic rod 307 back.

[0036] like Fig. 9 As shown, the mobile material receiving mechanism includes a mobile frame 601, a fixed frame 602, a ball screw drive mechanism 604, a slider guide mechanism 605, a support leg 606, and a material receiving motor 007.

[0037] The movable frame 601 is slidably arranged on the fixed frame 602 through a slider guide mechanism 605 , and the material receiving motor 007 is arranged on the fixed frame 602 , and the movable frame 601 is driven to slide left and right on the fixed frame 602 through a ball screw driving mechanism 604 .

[0038] like Figure 8 As shown, the tensioning mechanism includes a tensioning frame 500 , a tensioning motor 501 , a large tensioning wheel 502 , a small tensioning wheel 503 , a side tensioning wheel 504 , a double-axis cylinder 506 , and a tensioning slider 507 .

[0039] The tensioning frame 500 is arranged on the movable frame 601, the tensioning slider 507 is slidably arranged on the tensioning frame 500, the tensioning motor 501 is arranged on the tensioning frame 500, the tensioning motor 501 drives the tensioning slider 507 to slide up and down through the ball screw nut, the large tensioning wheel 502 is fixedly arranged on the tensioning frame 500, and the small tensioning wheel 503 is fixedly arranged on the tensioning slider 507.

[0040] The double-axis cylinder 506 is arranged on the moving frame 601, and the side tensioning wheel 504 is arranged at the end of the extended rod thereof to tension the transmission belt from the side.

[0041] like Fig. 9 As shown, after the push cylinder 002 extends, the receiving motor 007 of the mobile receiving mechanism starts, and the mobile frame 601 slides to the left together with the tensioning mechanism. The large tensioning wheel 502 moves toward the telescopic rod 307, and the telescopic rod 307 retracts due to being squeezed. The upper edge of the large tensioning wheel 502 is slightly lower than the telescopic rod, and the transmission belt on the telescopic rod just slides onto the upper edge of the large tensioning wheel, completing the transmission belt receiving.

[0042] Then, driven by the tensioning motor 501, the small tensioning wheel 503 and the tensioning slider 507 slide downward along the tensioning frame 500. When the small tensioning wheel 503 slides downward, the transmission belt is tensioned on the large tensioning wheel and the small tensioning wheel. The double-axis cylinder 506 extends, and the side tensioning wheel 504 presses the transmission belt from the side. After the mobile material receiving mechanism completes the material receiving, it moves to the right and the transmission belt is inspected by the visual system. The feeding cylinder retracts and waits for the next transmission belt. A driving motor is provided on the tensioning frame to drive the large tensioning wheel to rotate, and the transmission belt is inspected during the rotation. Because the camera is fixed, the transmission belt needs to be rotated.

[0043] The material unloading mechanism includes a retaining ring 401 , a material unloading lever 402 , a material unloading rotating shaft 403 , a rotating arm 406 , a material unloading bracket 405 , a material unloading cylinder 404 , and a swing rod 407 .

[0044] The unloading bracket 405 is installed on the mobile frame 601, the unloading shaft 403 is rotatably set on the unloading bracket 405, one end of the rocker arm 407 is connected to the unloading shaft 403, the other end of the rocker arm 407 is connected to the unloading lever 402, the retaining ring 401 is set at the connection between the rocker arm 407 and the unloading lever 402, the tail end of the unloading cylinder 404 is rotatably set on the mobile frame 601, the rod end of the unloading cylinder 405 is rotatably connected to the rotating arm 406, and the other end of the rotating arm 406 is fixedly connected to the unloading shaft 403.

[0045] The material unloading auxiliary cylinder 702 is installed on the moving frame 601 through a bracket 703 , and the rod end of the material unloading auxiliary cylinder 702 is connected to the push plate 703 .

[0046] like Figure 1 As shown, the unloading mechanism has one set on the left and one set on the right, which are symmetrically arranged on both sides of the large tension wheel. The unloading shaft 403 is arranged parallel to the shaft of the large tension wheel. When the unloading cylinder 404 is recovered, the shaft 403 is driven to rotate, so that the unloading lever 402 extends to the front end of the large tension wheel. The unloading lever points vertically to the large tension wheel, waiting to connect the transmission belt. The two sets on the left and right are for distinction. When the test is qualified, one set is used, and when the test is unqualified, the other set is used, so as to classify qualified products and unqualified products.

[0047] There are also two unloading auxiliary cylinders 702, one on each side, which are arranged on both sides of the large tension wheel. After the transmission belt detection is completed, the small tension wheel slides upward and the transmission belt is loosened. At this time, the two unloading auxiliary cylinders 702 simultaneously push the transmission belt forward, causing the transmission belt to fall off and fall on the unloading lever 402.

[0048] Then, the unloading cylinder 404 extends to rotate the unloading shaft 403 counterclockwise, and the lever moves away from the center position, pushing the transmission belt on the unloading lever 402 to the outside of the equipment. During the rotation of the lever, the transmission belt will fall off the lever and fall into the material receiving box.

[0049] In order to facilitate the falling off, the lever and the swing arm are at an obtuse angle. The retaining ring 401 prevents the transmission belt from getting stuck at the connection. At this point, the unloading of a transmission belt is completed.

[0050] See also Figure 12-Figure 17 The visual inspection structure includes a line scan camera 91, a camera slide 92, a fixing frame 93, a single light source adjustment frame 94, an industrial vision strip light source 95, a dual light source adjustment frame 97, and an inner side inspection structure 98.

[0051] The line scan camera 91 is mounted on the camera slide 92, and the camera slide 92 is mounted on the single light source adjustment frame 94, the dual light source adjustment frame 97 and the inner side detection structure 98, which are used to adjust the focal length of the line scan camera 91. The single light source adjustment frame 94 is mounted with a fixing frame 93 on the other side of the camera slide 92, and an industrial visual strip light source 95 is mounted away from the fixing frame 93, and a slot for adjusting the position is stored at the other end of the fixing frame 93. The dual light source adjustment frame 97 is mounted with the camera slide 92 and the fixing frame 93 at one end, and two industrial visual strip light sources 95 can be mounted at the other end at the same time, and the angle of the industrial visual strip light source 95 is adjusted so that the light hits the transmission belt 99. The inner side detection structure 98 of the belt includes a base plate 9801, a camera slide 92 of a line scan camera 91 is installed at one end of the base plate 9801, and a light source fixing plate 9802 is stored at the other end to install an industrial vision strip light source 95. A bracket is installed on the other side of the base plate 9801 to support the inner side detection structure 98 of the belt. The end of the inner side detection structure 98 of the belt with a reflector extends into the inner side of the transmission belt 99. The transmission belt 99 is embedded in the grooves on the large tension wheel 502 and the small tension wheel 503. The rotation of the tension wheel drives the transmission belt 99 to rotate, thereby enabling the line scan camera 91 to perform defect detection.

[0052] The single light source adjustment frame 94 , the double light source adjustment frame 97 , and the bottom plate 9801 are respectively mounted on the moving frame 601 .

[0053] like Fig.13As shown, the camera slide 92 is composed of an upper bottom plate 9201 and a lower bottom plate 9202, both of which are provided with through holes. The upper bottom plate 9201 is provided with a line scan camera 91 and a pad 9806, and the lower bottom plate 9202 is provided with a light source adjustment frame bottom plate 9701 or a bottom plate 9801 with an inner detection structure. A columnar slide 9203 is provided between the upper bottom plate 9201 and the lower bottom plate 9202, so that the upper and lower bottom plates can slide relative to each other. There is a belt slide on one side of the camera slide 92. The hinge of the track, the fixed column 9204 is installed in the slide, the lower base plate 9202 is provided with a spiral micro-rod fixing groove 9205, which allows the spiral micro-rod 9207 to extend, and the upper base plate 9201 is also provided with a baffle 9206. The spiral micro-rod 9207 is connected to the baffle 9206, and the extension or shortening drives the upper and lower base plates to move relative to each other. At the same time, the single light source adjustment frame 94, the dual light source adjustment frame 97 and the fixed frame 93 are combined to adjust the line scan camera 91 so that the camera line of sight is perpendicular to the surface of the transmission belt 99.

[0054] like Fig.14 As shown, the fixing frame 93 includes a vertical plate 9301, which is provided with two rows of long through holes 9306. A support rod 9302 is connected to the vertical plate 9301 below the long through holes 9306. The extended end of the support rod 9302 is threadedly connected to a fixing clamp 9303 and extends into the interior thereof. The support rod 9302 can be rotated to adjust the fixing clamp 9303. By inserting a stud into the first threaded hole 9305, the gap 9304 of the fixing clamp 9303 can be reduced, thereby fixing the direction of the fixing clamp 9303. The dual light source adjustment frame 97 and the inner detection structure 98 are fixed above the fixing clamp 9303 for fixing and adjusting the positions of the camera and the light source.

[0055] like Fig.15 As shown, the industrial visual strip light source 95 has a light source connection port 9501 at one end for supplying electric energy, and a high-density LED array light bar 9503 and a scattering plate 9503 are provided on the other side. The industrial visual strip light source 95 is provided with two symmetrical second threaded holes 9502 for fixing the industrial visual strip light source 95. The angle of the light source and the transmission belt 99 at 45 degrees can greatly reduce the segmentation and recognition difficulty of the image processing algorithm for the surface defects of the transmission belt 99, improve the positioning and measurement accuracy, and thus improve the comprehensive performance of the surface defect detection of the transmission belt 99. The scattering plate 9503 on the industrial visual strip light source 95 can improve the directionality of the visual light source, reduce the brightness of the light source, reduce the directivity of the visual light source, and make the lighting softer and more uniform. By utilizing the function of the scattering plate 9503, the light source of the general direct angle is transformed into a diffuse light source, providing a better diffusion effect, and obtaining a uniform and stable diffuse light irradiation area.

[0056] like Fig.16As shown, the dual light source adjustment frame 97 includes a light source adjustment frame base plate 9701 connected to a dual light source clamp 9702, and its connection portion has three equidistant holes for adjusting the position of the light source adjustment frame base plate 9701, making the installation more flexible. One side of the light source adjustment frame base plate 9701 is connected to the camera slide 92 for fixing the camera slide 92, and the other side is installed with a fixing frame. The dual light source clamp 9702 is symmetrically distributed on the left and right, and is further provided with two arc-shaped passages 9703 for installing a light source fixing part 9704. The light source fixing part 9704 is provided with a through hole and a light source groove for installing an industrial vision strip light source 95. The light source fixing part 9704 is adjusted and installed so that the light source light is irradiated at a 45-degree angle with the transmission belt 99.

[0057] like Fig.17 As shown, the inner detection structure 98 includes a bottom plate 9801, the upper bottom surface of the bottom plate 9801 is used to install the camera slide 92, and the lower bottom surface is used to install other fixed structures. The light source fixing member 9802 in the inner detection structure 98 is used to fix the industrial visual strip light source 95, so that the light source and the reflector B9805 are at an angle of 45 degrees. The lower side of the reflector fixing plate 9803 in the inner detection structure 98 is fixed on the bottom plate 9801, and the reflector fixing plate 9803 has a horizontal plate structure for installing the reflector B9805. A reflector A9804 is installed at a corner of 03, and a camera mounting plate 9806 is formed on the inner side detection structure 98 of the belt for adjusting the height of the line scan camera 91. When installing the inner side detection structure 98 of the belt, one end with the reflector should be extended into the inner side of the transmission belt, so that the reflector A9804 and the reflector B9805 are at an angle of 45 degrees to the inner side of the transmission belt 99, reflecting the light to the surface of the transmission belt 99. At the same time, the image information on the surface of the transmission belt 99 is also reflected to the line scan camera 91, completing the visual detection in the narrow inner space of the transmission belt 99.

[0058] like Fig.13 , 14 As shown in Figures 15 and 16, the camera slide 92 is provided with an upper base plate 9201 and a lower base plate 9202, which are provided with a plurality of through holes, so that the line scan camera 91 and the light source adjustment frame base plate 9701 can be installed in different positions, which is flexible and changeable. The light source adjustment frame base plate 9701 is installed on the double light source clamp plate 9702, and the light source fixing part 9704 is installed between the double light source clamp plates 9702. The camera slide 92, the double light source clamp plate 9702, the light source adjustment frame base plate 9701, the fixing frame 93 and the line scan camera 91 form a whole for transmission belt surface defect detection.

[0059] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “up”, “down”, “left”, “right”, “clockwise” and “counterclockwise” are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0060] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A transmission belt appearance defect detection device, characterized in that: It includes a rotating loading device (001), a feeding mechanism, a material level detection mechanism, a tensioning mechanism, a mobile material receiving mechanism, a material unloading mechanism, and a visual detection structure; The rotary loading device (001) comprises a base (101), a lower support (102), and an upper support (105); The lower support (102) is fixedly mounted on the base (101), and the upper support (105) is rotatably connected to the lower support (102). The feeding mechanism comprises a feeding frame (300), a feeding motor (301), a feeding slider (302), a feeding slideway (303), a material level detection switch (304), a feeding slider (305), a feeding slide rail (306), a feeding telescopic rod (307), a material level detection rotating block (308), and a light spring (309); The feeding slideway (303) is arranged on the feeding frame (300), the feeding slider (302) is connected to the feeding slideway (303) by sliding forward and backward, the feeding motor (301) is arranged on the feeding frame (300), a sprocket is arranged on the feeding frame (300), a sprocket is arranged on the output shaft of the feeding motor (301), chains are arranged on the two sprockets, the chain and the feeding slider (302) are fixedly connected, and the feeding motor (301) is installed forward and reverse to drive the feeding slider (302) to slide forward or backward on the feeding slideway (303); The material level detection rotating block (308) comprises a lever (3081), a rotating block (3082), a rotating shaft (3083), a detection counterweight block (3084), and a bearing (3085); The rotating shaft (3083) is mounted on the feeding frame (300) and is located below the front end of the feeding slideway (303). The bearing (3085) is mounted on the rotating shaft (3083). The rotating block (3082) is mounted on the bearing (3085). A lever (3081) is mounted on one end of the rotating block, and a detection counterweight (3084) is mounted on the other end. The material level detection switch (304) is arranged on the feeding rack (300) and is used for sensing and detecting the counterweight block (3084); The push cylinder (002) is arranged on the feeding frame (300), the rod end of the push cylinder (002) is provided with a feeding slider (305), and the feeding slider (305) is slidably connected with the feeding slide rail (306); The feeding slider (305) is provided with a hole running through the front and back, the front hole diameter is small, and the rear hole diameter is large. The rear end of the telescopic rod (307) is provided with a baffle. The telescopic rod (307) is inserted into the through hole of the feeding slider (305). The baffle is engaged at the intersection of the large and small holes to prevent the telescopic rod (307) from sliding out from the front end. A light spring (309) is arranged in the large hole of the feeding slider (305). The other end of the light spring is pressed tightly against the end surface of the baffle of the telescopic rod (307). The rear end of the large hole of the feeding slider (305) is blocked to block the rear end of the light spring (309). The mobile material receiving mechanism comprises a mobile frame (601), a fixed frame (602), a ball screw driving mechanism (604), a slider guide mechanism (605), a support leg (606), and a material receiving motor (607); The movable frame (601) is slidably arranged on the fixed frame (602) through a slider guide mechanism (605); the material receiving motor (007) is arranged on the fixed frame (602); and the movable frame (601) is driven to slide left and right on the fixed frame (602) through a ball screw drive mechanism (604); The tensioning mechanism comprises a tensioning frame (500), a tensioning motor (501), a large tensioning wheel (502), a small tensioning wheel (503), a side tensioning wheel (504), a double-axis cylinder (506), and a tensioning slider (507); The tensioning frame (500) is arranged on the movable frame (601), the tensioning slider (507) is slidably arranged on the tensioning frame (500), the tensioning motor (501) is arranged on the tensioning frame (500), the tensioning motor (501) drives the tensioning slider (507) to slide up and down through the ball screw nut, the large tensioning wheel (502) is fixedly arranged on the tensioning frame (500), and the small tensioning wheel (503) is fixedly arranged on the tensioning slider (507); The double-axis cylinder (506) is arranged on the mobile frame (601), and a side tensioning wheel (504) is arranged at the end of the extended rod thereof to tension the belt from the side; The material discharging mechanism comprises a retaining ring (401), a material discharging lever (402), a material discharging rotating shaft (403), a rotating arm (406), a material discharging bracket (405), a material discharging cylinder (404), and a swing rod (407). The unloading bracket (405) is installed on the mobile frame (601), the unloading shaft (403) is rotatably arranged on the unloading bracket (405), one end of the swing rod (407) is connected to the unloading shaft (403), the other end of the swing rod (407) is connected to the unloading lever (402), the retaining ring (401) is arranged at the connection between the swing rod (407) and the unloading lever (402), the tail end of the unloading cylinder (404) is rotatably arranged on the mobile frame (601), the rod end of the unloading cylinder (405) is rotatably connected to the rotating arm (406), and the other end of the rotating arm (406) is fixedly connected to the unloading shaft (403); The material unloading auxiliary cylinder (702) is installed on the moving frame (601) through a bracket (703), and the rod end of the material unloading auxiliary cylinder (702) is connected to the push plate (703); The visual inspection structure is mounted on the moving frame (601) for inspecting the surface defects of the belt.

2. The transmission belt appearance defect detection device according to claim 1, characterized in that: It also includes a first locking ring (103), a second locking ring (104), a first stopper (108), a second stopper (109) and a locking handle (107). The first locking ring (103) is fixedly mounted on the lower pillar (105) by means of bolts and nuts, the second locking ring (104) is fixedly mounted on the upper pillar (105) by means of bolts and nuts, the first stopper (108) is fixedly mounted on the first locking ring (103), the second stopper (109) is fixedly mounted on the second locking ring (104), the front end of the locking handle (107) is a screw rod, which passes through the holes of the first stopper (108) and the second stopper (109), and then the nut is tightened to fix the two.

3. The transmission belt appearance defect detection device according to claim 1, characterized in that: The unloading mechanism has one set on each side, which is symmetrically arranged on both sides of the large tensioning wheel.

4. The transmission belt appearance defect detection device according to claim 1, characterized in that: There are also two auxiliary cylinders (702) for unloading, one on each side, which are arranged on both sides of the large tension wheel.

5. The transmission belt appearance defect detection device according to claim 1, characterized in that: The visual detection structure comprises a single light source adjustment frame (94) and a double light source adjustment frame (97) installed on the outside of the transmission belt (99), an inner belt detection structure (98) installed on the inside of the transmission belt, and a combination of three line scan cameras (91) and a camera slide (92); The single light source adjustment frame (94) is provided with a fixing frame (93) on one side where the camera slide (92) is installed, and an industrial visual strip light source (95) is installed on the side away from the fixing frame (93); The dual light source adjustment frame (97) has a camera slide (92) and a fixed frame (93) mounted on one end, and two industrial visual strip light sources (95) mounted on the other end, wherein the light emitted by the two industrial visual strip light sources (95) hits the transmission belt (99) at a 45-degree angle; A camera slide (92) is installed at one end of the inner belt detection structure (98), and an industrial visual strip light source (95) is installed at the other end; one end of the inner belt detection structure (98) with a reflector (9804, 9805) extends into the inner side of the transmission belt (99); The single light source adjustment frame (94) and the double light source adjustment frame (97) are respectively mounted on the movable frame 601.

6. The transmission belt appearance defect detection device according to claim 5, characterized in that: The belt inner side detection structure (98) comprises a bottom plate (9801), the camera slide (92) is mounted on the top of the bottom plate (9801), the belt inner side detection structure (98) is provided with a light source fixing member (9802) for fixing the industrial visual strip light source (95); the belt inner side detection structure (98) is provided with a reflector fixing plate (9803), the lower edge of the reflector fixing plate (9803) is fixed on the bottom plate (9801), and the reflector fixing plate (9803) is provided with a horizontal plate structure for installing a reflector B (9805), and a reflector A (9804) is installed at a corner of the reflector fixing plate (9803); the inner side detection structure (98) is also provided with a camera mounting plate (9806) for adjusting the height of the line scan camera (91); the reflector A (9804) and the reflector B (9805) are both at an angle of 45 degrees to the inner side of the transmission belt (99), and the bottom plate 9801 is installed on the movable frame 601.

7. The transmission belt appearance defect detection device according to claim 6, characterized in that: The dual light source adjustment frame (97) comprises a light source adjustment frame bottom plate (9701) and a dual light source clamping plate (9702) connected to each other, and the connection portion of the two has three holes distributed at equal intervals for adjusting the position of the light source adjustment frame bottom plate (9701), one side of the light source adjustment frame bottom plate (9701) is connected to the camera slide (92), and the other side is connected to the fixing frame (93); the dual light source clamping plate (9702) is symmetrically distributed on the left and right, and the dual light source clamping plate (9702) is also provided with two arc-shaped holes (9703) for installing a light source fixing member (9704), and the light source fixing member (9704) is provided with a through hole and a light source groove for installing an industrial vision strip light source (95), and by adjusting the light source fixing member (9704), the light emitted by the industrial vision strip light source (95) is irradiated at an angle of 45 degrees to the transmission belt (99).

8. The transmission belt appearance defect detection device according to claim 7, characterized in that: The camera slide (92) comprises an upper base plate (9201) and a lower base plate (9202) which are embedded together. Through holes are provided on the upper base plate (9201) and the lower base plate (9202). A line scan camera (91) and a pad (9806) are installed on the upper base plate (9201). The lower base plate (9202) is installed on a light source adjustment frame base plate (9701) or a base plate with an inner detection structure (9801). A columnar The slideway (9203) enables the upper base plate (9201) and the lower base plate (9202) to slide relative to each other. A hinge with a slideway is installed on one side of the camera slide (92). The fixing column (9204) is installed in the slideway. A spiral micro-rod fixing groove (9205) is installed on the lower base plate (9202). The spiral micro-rod fixing groove (9205) is internally threadedly connected with a spiral micro-rod (9207). A baffle (9206) for preventing the spiral micro-rod (9207) from extending is installed on the upper base plate (9201).

9. The transmission belt appearance defect detection device according to claim 8, characterized in that: The fixing frame (93) includes a vertical plate (9301), the vertical plate (9301) is provided with two rows of long through holes (9306), a support rod (9302) is connected below the long through holes (9306), an extended end of the support rod (9302) is connected to a fixing clamp (9303) and extends into the interior thereof, a threaded hole (9305) is provided in the fixing clamp (9303), and a gap (9304) on the fixing clamp (9303) is reduced by inserting a stud, and the dual light source adjustment frame (97) or the inner detection structure (98) is fixed on the fixing clamp (9303).

10. The transmission belt appearance defect detection device according to claim 9, characterized in that: The industrial visual strip light source (95) has a light source connection port (9501) at one end, and a high-density LED array light bar (9503) and a scattering plate (9503) at the other side.

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