A ball nose appearance defect optical inspection apparatus

Abstract

The application provides a ball tooth appearance defect optical detection device, which comprises an optical detection system, a plurality of detection stations for placing ball teeth respectively, and top surface detection devices, top end detection devices and a plurality of appearance detection devices corresponding to the plurality of detection stations respectively, wherein the top of the ball tooth is contracted, the top surface detection device comprises a top surface camera for focusing on the outer periphery of the top of the ball tooth to shoot a first top image, the first top image at least comprises a clear ball tooth top outer periphery image, the top end detection device comprises a top end camera for focusing on the top end of the ball tooth to shoot a second top image, the second top image at least comprises a clear ball tooth top end image, and the top end image and the top outer periphery image of the same ball tooth form a complete top image. The segmented shooting mode of the top end combined with the outer periphery makes the top defect detection result not affected by the reflection of the top end and the compression of the outer periphery image, and clear and complete defect detection of the whole top of the ball tooth is stably realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of detection equipment, and particularly relates to a ball tooth appearance defect optical detection equipment. BACKGROUND

[0002] Hard alloy ball tooth is a high-hardness industrial part made of tungsten carbide as the main raw material through powder metallurgy process, and has excellent wear resistance and impact toughness. Its main application fields include oil drilling (roller bit, down-the-hole drill), mine exploitation (quarrying, mining, tunnel engineering), road maintenance and snow plow snow removal equipment, and can be adapted to roller bit, geological drilling tool and other equipment.

[0003] In the production process, cracks, scratches and other defects may appear on the surface of the ball tooth, which will affect its physical properties and lead to substandard product quality. In order to ensure the quality of the ball tooth leaving the factory, optical detection equipment is needed to screen and recycle the ball tooth with appearance defects. The existing optical detection equipment has multiple detection stations, which can respectively detect the length, bottom defect, top defect, diameter, shank defect and chamfer defect of the ball tooth by photographing. After detection, the equipment can automatically classify and collect qualified ball tooth and unqualified ball tooth.

[0004] However, due to the structure of the ball tooth, the bottom is usually cylindrical and the top is semicircular or conical, which leads to a large area of light spot (as shown in Figure 1 ) on the top when the top is detected by camera photographing, which seriously interferes with the detection result of the top. The light spot can be avoided by moving the camera closer to the ball tooth top for photographing detection, but lens distortion will cause the image of the ball tooth top to be compressed too much, which cannot fully capture the defects on the top of the ball tooth.

[0005] The research purpose of the present application is to design a ball tooth appearance defect optical detection equipment to solve the above problems of the prior art. SUMMARY

[0006] The present application provides a ball tooth appearance defect optical detection equipment, which can effectively solve the above problems.

[0007] The present application is implemented as follows:

[0008] A ball tooth appearance defect optical detection equipment comprises:

[0009] An optical detection system comprises several detection stations for placing the tines, and top surface detection devices, top end detection devices, and several appearance detection devices corresponding to the detection stations respectively, the top of the tine is tapered, the top surface detection device comprises several reflective baffles for covering the outside of the tine top, several circumferential light sources for irradiating the periphery of the tine top inside the reflective baffles, and a top surface camera corresponding to the middle of the reflective baffles for focusing on the periphery of the tine top to take a first top image, the first top image at least includes a clear image of the periphery of the tine top, the top end detection device comprises a reflective cover with a central hole for covering the periphery of the tine top, a top end light source corresponding to the central hole of the reflective cover for irradiating the tine top, and a top end camera corresponding to the central hole of the reflective cover for focusing on the tine top to take a second top image, the second top image at least includes a clear image of the tine top, and the top end image and the periphery image of the same tine form a complete top image.

[0010] Further, the tine top is tapered with a rounded corner at the top end, the top end detection device and the top surface detection device are located on the right side of the detection station, the top end image at least includes half of the tine top near the top, and the periphery image at least includes the other half of the tine top near the bottom, the top end detection device further comprises a top end detection moving seat driven by a top end detection driving mechanism to move left and right, the reflective cover, the top end light source, and the top end camera are all arranged on the top end detection moving seat, the reflective cover is a half-spherical shape with an opening facing left and a central hole in the right end, the top end light source and the top end camera are arranged in sequence on the right side of the reflective cover and correspond to the central hole of the reflective cover, the top surface detection device further comprises a top surface detection moving seat driven by a top surface detection driving mechanism to move left and right, several reflective baffles, several circumferential light sources, and the top surface camera are all arranged on the top surface detection moving seat, the several reflective baffles correspond to the front and back sides of the tine, the several circumferential light sources correspond to the upper side, the lower side, the front side, and the back side of the tine, and two detection stations corresponding to the top end detection device and the top surface detection device are respectively provided with light shielding baffles located on the front and back sides of the tine.

[0011] Further, the several detection stations include size stations, top surface stations, top end stations, bottom stations and column body stations distributed in sequence from back to front, the top surface detection devices and the top end detection devices correspond to the top surface stations and the top end stations respectively, the several appearance detection devices include size detection devices, bottom detection devices and column body detection devices corresponding to the size stations, the bottom stations and the column body stations respectively, the size detection devices, the bottom detection devices and the column body detection devices respectively include size cameras for photographing and detecting the length of the ball tooth, bottom cameras for photographing and detecting defects of the bottom of the ball tooth and column body cameras for photographing and detecting defects of the column body of the ball tooth, and the column body stations are used for placing the ball tooth and driving the ball tooth to rotate.

[0012] Further, the feeding system includes a vibrating disc and a vibration driving device for driving the vibrating disc to vibrate and feed, the inner wall of the vibrating disc is provided with a spiral track spirally rising upward, inner and outer tracks distributed inside and outside and arranged in an arc shape, the first trigger plate is arranged on the upper end of the spiral track and rotates up and down, the outer track is located outside the spiral track and is connected to the upper end of the spiral track and the outside of the first trigger plate at one end and is provided with a rejection device for screening and rejecting ball teeth with forward bottoms at the other end, one end of the inner track is located below the first trigger plate and the other end is located above the spiral track, the outer side of the vibrating disc is provided with a discharge track connected to the other end of the outer track and the optical detection system, and the optical detection system further includes a carrying mechanism for carrying several ball teeth from back to front and moving along the several detection stations in sequence; the several ball teeth are laid along the spiral track and spirally rise upward under the centrifugal vibration of the vibrating disc, when the ball tooth with a forward top is output from the upper end of the spiral track, the center of gravity is backward and the first trigger plate is pressed downward before the ball tooth rolls outward under the centrifugal vibration to the outer track; when the ball tooth with a forward bottom is output from the upper end of the spiral track, the center of gravity is forward and the first trigger plate is pressed downward before the ball tooth rolls outward under the centrifugal vibration to fall into the inner track.

[0013] Further, the inner track and the outer track are of the same height and separated by an arc-shaped partition, the ejecting device comprises a second trigger plate horizontally rotating in the other end of the outer track, an ejecting mechanism arranged outside the outer track and having an output end corresponding to the rear side of the second trigger plate, and an ejecting port penetrating the partition and communicating with the outer track and the inner track, the second trigger plate is arranged outside the partition and has an inner end abutting the partition and a free outer end, the second trigger plate forms an extrusion port between the outer side wall of the outer track and the other end of the second trigger plate, and the second trigger plate forms a discharging channel in front of the extrusion port, the discharging channel gradually increases in width away from the extrusion port, when the top of the ball tooth is transported to the extrusion port, the top of the ball tooth is extruded into the extrusion port and the extrusion port is expanded to the discharging channel, the second trigger plate is inwardly swung, when the bottom of the ball tooth is transported to the extrusion port, the bottom of the ball tooth cannot be extruded into the extrusion port and pushes the second trigger plate, the second trigger plate is outwardly swung, and the output end of the ejecting mechanism drives the ball tooth with the bottom forward through the ejecting port and into the inner track.

[0014] Further, the ejecting port is provided with a rotating plate driven by a rotating drive device, the rotating plate is controlled by an electromagnet device to attract the ball tooth or release the ball tooth, the ejecting mechanism is provided with a telescopic end penetrating the outer side wall of the outer track and corresponding to the rear side of the second trigger plate, the inner track is located above the spiral track and is provided with a discharging port located at the rear side of the ejecting port, and the other end of the inner track is located above the spiral track, the ball tooth falling into one end of the inner track is transported along the inner track to the discharging port and then falls into the spiral track, when the bottom of the ball tooth is transported to the extrusion port and the second trigger plate is pressed to swing outwardly, the telescopic end of the ejecting mechanism slightly pushes the ball tooth with the bottom forward inwardly, the ball tooth is attracted by the rotating plate and rotated to the inner track to be released.

[0015] Further, the spiral track is provided with a material buffering member extending in an arc shape from the outside to the inside in the spiral direction, a plurality of ball teeth are slowed down and sequentially spirally ascend and advance after being guided by the material buffering member, the first trigger plate is hinged to the upper end of the spiral track and is provided with a first torsional spring at the hinge position for driving the first trigger plate to remain horizontal, the inner end of the second trigger plate is hinged to the side wall of the vibrating disc and is provided with a second torsional spring at the hinge position for driving the second trigger plate to remain at an initial swing angle and an angle sensor for detecting the swing angle of the second trigger plate.

[0016] Further, the optical detection system further comprises a docking mechanism, the docking mechanism comprises a feeding channel docking with the discharge track, a feeding station docking with the discharge end of the feeding channel and located at the rear side of the detection stations, the feeding station comprises a first V-shaped groove for placing the ball teeth and opening upward, and a second V-shaped groove located at the front end of the first V-shaped groove and opening backward, the conveying mechanism comprises a plurality of clamping jaws for conveying the ball teeth to move along the feeding station and the detection stations in sequence; during the process that the feeding channel outputs the ball teeth to the first V-shaped groove, the top end of the ball teeth is limited in the second V-shaped groove.

[0017] Further, the optical detection system further comprises a docking mechanism, the docking mechanism comprises a feeding channel docking with the discharge track, a feeding station docking with the discharge end of the feeding channel and located at the rear side of the detection stations, the feeding station comprises a first V-shaped groove for placing the ball teeth and opening upward, and a second V-shaped groove located at the front end of the first V-shaped groove and opening backward, the conveying mechanism comprises a plurality of clamping jaws for conveying the ball teeth to move along the feeding station and the detection stations in sequence; during the process that the feeding channel outputs the ball teeth to the first V-shaped groove, the top end of the ball teeth is limited in the second V-shaped groove.

[0018] Further, the optical detection system further comprises a docking mechanism, the docking mechanism comprises a feeding channel docking with the discharge track, a feeding station docking with the discharge end of the feeding channel and located at the rear side of the detection stations, the feeding station comprises a first V-shaped groove for placing the ball teeth and opening upward, and a second V-shaped groove located at the front end of the first V-shaped groove and opening backward, the conveying mechanism comprises a plurality of clamping jaws for conveying the ball teeth to move along the feeding station and the detection stations in sequence; during the process that the feeding channel outputs the ball teeth to the first V-shaped groove, the top end of the ball teeth is limited in the second V-shaped groove.

[0019] The beneficial effects of the present application are:

[0020] 1. Through the setting of the top surface detection device and the top end detection device, the top end of the ball tooth top can be uniformly illuminated by the reflector and the top end light source at close range, and a clear ball tooth top end photo can be taken by the top end camera for defect detection. The outer periphery of the ball tooth top can be uniformly illuminated by the several reflector baffles and the several circumferential light sources, and a clear ball tooth top outer periphery photo can be taken by the top camera for defect detection. The top end image and the top outer periphery image can cover the whole ball tooth top, so that the top defect detection result is not affected by the top end reflection and the outer periphery image compression through the segmented shooting mode of the top end combined with the outer periphery, and clear and complete defect detection of the whole ball tooth top is stably realized. In order to ensure that the whole ball tooth top can be clearly and completely defect detected, the top end image at least includes half of the ball tooth top near the cone top, and the top outer periphery image at least includes the other half of the ball tooth top near the cone bottom, so as to ensure that the defect detection of the top end image and the top outer periphery image can cover the defect detection of all areas of the ball tooth top. In order to improve the defect detection adaptability of the top end detection device and the top surface detection device.

[0021] 2. The ball tooth is fed by the vibration disc. On this basis, the first trigger plate, the outer track and the inner track are set, so that the several ball teeth are laid and spirally ascend along the spiral track under the centrifugal vibration of the vibration disc. When the ball tooth top outputs the upper end of the spiral track forward, the center of gravity is backward and the first trigger plate is pressed downward before rolling outward under the centrifugal vibration to the outer track. When the ball tooth bottom outputs the upper end of the spiral track forward, the center of gravity is forward and the first trigger plate is pressed downward before rolling outward under the centrifugal vibration to fall into the inner track. Thus, the first selection of the ball tooth direction is realized by the cooperation of the first trigger plate, the outer track and the inner track, the probability of the ball tooth top forward in the outer track is greatly improved, and the ball tooth with the bottom forward is selected into the inner track and dropped and turned over to the spiral track for re-feeding. On this basis, the situation of too many ball teeth with the bottom forward in continuous arrangement can be avoided, the frequency pressure of the second selection and rejection of the subsequent rejection device is reduced, the accuracy and stability of the second selection are ensured, so that the ball tooth output from the discharge track is unified to the top forward through the two selections and rejections, and the ball tooth direction stability of the input optical detection system is ensured.

[0022] 3. By configuring the second trigger plate and the shaving port, when the ball teeth are conveyed to the extrusion port with the tip facing forward, the tip of the ball teeth squeezes into and expands the extrusion port to the discharge channel, and the second trigger plate swings inward. When the ball teeth are conveyed to the extrusion port with the bottom facing forward, the bottom of the ball teeth cannot squeeze into the extrusion port and presses forward against the second trigger plate, causing the second trigger plate to swing outward. The output end of the rejection mechanism drives the ball teeth with the bottom facing forward inward through the rejection port into the inner track. This utilizes the characteristic that the tip of the ball teeth can contract and squeeze into the extrusion port, enabling precise mechanical orientation screening via the second trigger plate. Compared to image recognition detection screening, this is simpler, more accurate, and more stable, greatly reducing the risk of misjudgment and improving the screening stability of the rejection device. Furthermore, due to the first screening by the first trigger plate, most of the ball teeth input to the second trigger plate are tip-forward, with occasional bottom-forward ball teeth mistakenly entering the outer track. Therefore, only a few bottom-forward ball teeth appear intermittently, which significantly reduces the rejection frequency of the rejection mechanism, improving rejection stability and avoiding errors caused by excessively high rejection frequency.

[0023] 4. The design of the discharge port ensures that the ball teeth falling to one end of the inner track are transported along the inner track to the discharge port and then fall onto the spiral track. This prevents the ball teeth with their bottoms facing forward from moving to the rejection port and causing interference, and allows the ball teeth with their bottoms facing forward to fall from a certain height into the spiral track and flip over, increasing the probability of changing their orientation and reducing the probability of repeated incorrect orientation feeding. At the same time, the design of the steering plate and the pushing cylinder ensures that when the ball teeth with their bottoms facing forward are transported to the extrusion port and the second trigger plate is pressed outward, the extension end of the pushing cylinder gently pushes the ball teeth with their bottoms facing forward inward. The ball teeth are then attracted by the electromagnetic induction of the steering plate and rotated to the inner track where the power is cut off and released. Thus, when it is necessary to reject the ball teeth, the pushing cylinder is controlled to gently push the ball teeth inward until they can be attracted by the magnetic induction of the steering plate. This design makes the ball teeth less stressed and prevents them from colliding with the steering plate, thus avoiding damage to the appearance of the ball teeth during rejection and greatly improving the stability of the rejection device in rejecting ball teeth.

[0024] 5. By adding a buffer component, the ball teeth on the spiral track can slow down as much as possible and rise in a staggered queue, thus giving the first and second trigger plates a certain amount of reset time and preventing the ball teeth from crowding and causing the first and second trigger plates to fail in their screening function. The docking mechanism not only allows the feeding channel to stably dock with the discharge track, but also ensures that during the process of the ball teeth being output from the feeding channel to the first V-groove, the top of the ball teeth pushes forward to the limit position within the second V-groove, thereby improving the accuracy of the ball tooth position after feeding into the optical detection system and paving the way for precise handling by the subsequent conveying mechanism.

[0025] 6. By using the dual-circulation pushing of the first and second feeding sections, a two-stage discharge method is achieved, in which the ball teeth are first pushed to the other end of the two rotating rollers and then pushed out to the sorting device. This reduces the reset stroke of the feeding plate, thereby improving the reciprocating motion efficiency of the feeding plate. This avoids the efficiency of ball teeth input to the two rotating rollers due to the long stroke reset of the feeding plate, ensuring the ball teeth discharge efficiency while improving the column defect detection efficiency. Attached Figure Description

[0026] Figure 1 A photograph of the top of the ball tooth taken using existing technology.

[0027] Figure 2 The first top image shows the defective parts circled in the image.

[0028] Figure 3 This is the second top image, with the defective area circled in the image.

[0029] Figure 4 This is a schematic diagram of the structure of an optical inspection device for surface defects in spherical teeth.

[0030] Figure 5 A schematic diagram of the structure of the optical inspection system without the column inspection device.

[0031] Figure 6 This is a schematic diagram of the top surface detection device and the top end detection device.

[0032] Figure 7 for Figure 6 A structural diagram from another perspective.

[0033] Figure 8 This is a schematic diagram of the docking mechanism.

[0034] Figure 9 This is a schematic diagram of the column detection device and the discharge device.

[0035] Figure 10 This is a schematic diagram of the discharge device and the rotating roller.

[0036] Figure 11 This is a schematic diagram of the feeding system.

[0037] Figure 12 This is a schematic diagram of the vibratory feeder.

[0038] Figure 13 for Figure 12 A magnified view of a portion of point A in the middle.

[0039] Figure 14 for Figure 12 A magnified view of a section at point B.

[0040] Figure 15A structural schematic diagram of the sorting device.

[0041] Figure 16 A Figure 15 A local enlarged view at C.

[0042] Reference signs:

[0043] 1, optical detection system; 11, detection station; 111, size station; 112, top surface station; 113, top end station; 114, bottom station; 115, column body station; 1151, rotating roller; 12, top surface detection device; 121, reflective baffle; 122, circumferential light source; 123, top surface camera; 124, top surface detection moving seat; 13, top end detection device; 131, reflective cover; 132, top end light source; 133, top end camera; 134, top end detection moving seat; 14, light shielding baffle; 15, size detection device; 151, size camera; 16, bottom detection device; 161, bottom camera; 17, column body detection device; 171, column body camera; 18, carrying mechanism; 181, clamping jaw; 19, butt joint mechanism; 191, feeding channel; 192, feeding station; 1921, first V-shaped groove; 1922, second V-shaped groove;

[0044] 2, vibration disc; 21, spiral track; 211, material buffering piece; 22, inner track; 221, material falling port; 23, outer track; 24, first trigger plate; 25, rejection device; 251, second trigger plate; 252, rejection mechanism; 253, rejection port; 254, extrusion port; 255, discharge channel; 256, turning plate; 26, discharge track; 27, partition plate;

[0045] 3, discharge device; 31, pushing piece; 311, first pushing part; 312, second pushing part; 32, lifting driving mechanism; 33, pushing driving seat;

[0046] 4, sorting device; 41, material receiving conveying line; 42, discharging table; 43, discharge conveying line; 431, discharging port; 44, unqualified material box; 45, discharging driving mechanism; 451, discharging cylinder; 452, material pushing part; 453, material blocking piece;

[0047] 5, ball tooth. DETAILED DESCRIPTION

[0048] Referring to Figures 1-16 the drawings, an optical detection device for ball tooth appearance defects comprises:

[0049] The optical detection system 1 comprises a plurality of detection stations 11 for placing the tines 5 respectively, and a top surface detection device 12, a top end detection device 13, and a plurality of appearance detection devices corresponding to the plurality of detection stations 11 respectively. The top end of the top of the tine 5 is contracted, the top surface detection device 12 comprises a plurality of reflective baffles 121 for covering the outside of the top of the tine 5, a plurality of circumferential light sources 122 arranged inside the plurality of reflective baffles 121 and used for irradiating the outer periphery of the top of the tine 5, and a top surface camera 123 corresponding to the middle part of the plurality of reflective baffles 121 and used for focusing on the outer periphery of the top of the tine to take a first top image, the first top image at least comprising a clear image of the outer periphery of the top of the tine 5. The top end detection device 13 comprises a reflective cover 131 with a middle hole for covering the outer periphery of the top end of the tine 5, a top end light source 132 corresponding to the middle hole of the reflective cover 131 and used for irradiating the top end of the tine 5, and a top end camera 133 corresponding to the middle hole of the reflective cover 131 and used for focusing on the top end of the tine to take a second top image, the second top image at least comprising a clear image of the top end of the tine 5. The top end image and the top periphery image of the same tine 5 form a complete top image. Specifically, the first top image is as shown in Figure 2 , and the second top image is as shown in Figure 3 .

[0050] The above structure is provided with the top surface detection device 12 and the top end detection device 13, so that the reflective cover 131 and the top end light source 132 can uniformly illuminate the top end of the top of the tine 5 at a close distance, and the top end camera 133 can focus on and take a clear photo of the top end of the tine 5 for defect detection. The plurality of reflective baffles 121 and the plurality of circumferential light sources 122 can uniformly illuminate the outer periphery of the top of the tine 5, and the top surface camera can focus on and take a clear photo of the outer periphery of the top of the tine 5 for defect detection. The top end image and the top periphery image can cover the whole top of the tine 5, so that the segmented photographing mode of the top end combined with the outer periphery can make the top defect detection result not affected by the top end reflection and the outer periphery image compression, and stable clear and complete defect detection of the whole top of the tine 5 can be achieved.

[0051] Specifically, in the embodiment, the top of the ball tooth 5 is provided as a conical shape with a rounded top end, and the top end detection device 13 and the top surface detection device 12 are both located on the right side of the detection station 11. Therefore, in order to ensure that the entire top of the ball tooth 5 can be clearly and completely detected for defects, the top end image includes at least half of the top of the ball tooth 5 near the top end of the cone, and the top outer peripheral image includes at least the other half of the top of the ball tooth 5 near the bottom of the cone, so as to ensure that the defect detection of the top end image and the top outer peripheral image can cover the defect detection of all areas of the top of the ball tooth 5. In order to improve the defect detection adaptability of the top end detection device 13 and the top surface detection device 12, the top end detection device 13 further includes a top end detection moving seat 134 driven by a top end detection driving mechanism to move left and right horizontally, and the reflector cover 131, the top end light source 132, and the top end camera 133 are all arranged on the top end detection moving seat 134. The reflector cover 131 is provided as a semi-spherical shape with an opening facing left and a hole in the middle of the right end. The top end light source 132 and the top end camera 133 are sequentially arranged on the right side of the reflector cover 131 and correspond to the hole in the middle of the reflector cover 131. The top surface detection device 12 further includes a top surface detection moving seat 124 driven by a top surface detection driving mechanism to move left and right horizontally, and a plurality of reflector baffles 121, a plurality of circumferential light sources 122, and the top surface camera 123 are all arranged on the top surface detection moving seat 124. The plurality of reflector baffles 121 correspond to the front and back sides of the ball tooth 5, and the plurality of circumferential light sources 122 correspond to the upper side, the lower side, the front side, and the back side of the ball tooth 5. Two detection stations 11 of the top end detection device 13 and the top surface detection device 12 are respectively provided with light-shielding baffles 14 located on the front and back sides of the ball tooth 5. The above structure, through the arrangement of the top end detection moving seat 134 and the top surface detection moving seat 124, enables the focal length of the top end camera 133 and the top surface camera 123 to move and adjust when the size of the ball tooth 5 changes, thereby improving the defect detection adaptability of the top end detection device 13 and the top surface detection device 12. Moreover, through the position layout of the reflector cover 131 and the top end light source 132, the top end of the ball tooth 5 is uniformly and specifically illuminated, thereby improving the clarity of the top end image. Through the position layout of the plurality of reflector baffles 121 and the plurality of circumferential light sources 122, the top outer periphery of the ball tooth 5 is uniformly and specifically illuminated, thereby improving the clarity of the top outer peripheral image.

[0052] In order to comprehensively detect the appearance defects of the buttons 5, a plurality of the detection stations 11 include size stations 111, top surface stations 112, top end stations 113, bottom stations 114, and shaft stations 115 distributed in sequence from back to front, the top surface detection devices 12 and the top end detection devices 13 correspond to the top surface stations 112 and the top end stations 113 respectively, a plurality of the appearance detection devices include size detection devices 15, bottom detection devices 16, and shaft detection devices 17 corresponding to the size stations 111, the bottom stations 114, and the shaft stations 115 respectively, the size detection devices 15, the bottom detection devices 16, and the shaft detection devices 17 respectively include size cameras 151 for photographing and detecting the lengths of the buttons 5, bottom cameras 161 for photographing and detecting the bottom defects of the buttons 5, and shaft cameras 171 for photographing and detecting the shaft defects of the buttons 5, the shaft stations 115 are used for placing the buttons 5 and driving the buttons 5 to rotate.

[0053] Because the top and bottom of the tines 5 are different in shape, and the top needs to be detected in sections, the tines 5 input into the optical detection system 1 need to be consistent in orientation, so as to improve the moving efficiency of the tines 5 on the several detection stations 11 and ensure the accuracy of the detection results. Specifically, in the embodiment, the tines 5 need to be input into the optical detection system 1 with the top forward, therefore, in order to improve the feeding stability of the optical detection system 1, the tine 5 appearance defect optical detection equipment further comprises a feeding system, which comprises a vibrating disc 2 and a vibration driving device for driving the vibrating disc 2 to vibrate and feed, the inner wall of the vibrating disc 2 is provided with a spiral track 21 spirally rising, an inner track 22 and an outer track 23 distributed inside and outside and arranged in an arc shape, a first trigger plate 24 is rotatably arranged on the upper end of the spiral track 21, the outer track 23 is located outside the spiral track 21 and is connected to the upper end of the spiral track 21 and the outer side of the first trigger plate 24 at one end, and is provided with a rejection device 25 for screening and rejecting the tines 5 with the bottom forward at the other end, one end of the inner track 22 is located below the first trigger plate 24, and the other end is located above the spiral track 21, and a discharge track 26 connected to the other end of the outer track 23 and the optical detection system 1 is arranged outside the vibrating disc 2, and the optical detection system 1 further comprises a carrying mechanism 18 for carrying several tines 5 from back to front and moving along the several detection stations 11 in turn; the above structure realizes the feeding of the tines 5 through the arrangement of the vibrating disc 2, and on this basis, through the arrangement of the first trigger plate 24, the outer track 23 and the inner track 22, the several tines 5 are laid and spirally raised along the spiral track 21 under the centrifugal vibration of the vibrating disc 2, when the tines 5 with the top forward are output from the upper end of the spiral track 21, the center of gravity is backward and falls into the inner track 22 under the first trigger plate 24 before rolling outward under the centrifugal vibration; when the tines 5 with the bottom forward are output from the upper end of the spiral track 21, the center of gravity is forward and falls into the inner track 22 under the first trigger plate 24 before rolling outward under the centrifugal vibration; thereby, the first screening of the orientation of the tines 5 is realized through the cooperation of the first trigger plate 24, the outer track 23 and the inner track 22, the probability of the tines 5 with the top forward input into the outer track 23 is greatly improved, and the tines 5 with the bottom forward are screened into the inner track 22 and dropped and turned over to the spiral track 21 for re-feeding. On this basis, the situation that too many tines 5 with the bottom forward are arranged in series can be avoided, the frequency pressure of the second screening and rejection by the rejection device 25 is reduced, the accuracy and stability of the second screening are ensured, thereby, through the two screenings and rejections, it is ensured that the tines 5 output from the discharge track 26 are all with the top forward, and the orientation stability of the tines 5 input into the optical detection system 1 is ensured.

[0054] In order to improve the stability of the screening and removing of the tine 5 by the removing device 25, the inner track 22 and the outer track 23 have the same height and are separated by the arc-shaped partition plate 27, the removing device 25 comprises a second trigger plate 251 horizontally rotating arranged in the other end of the outer track 23, a removing mechanism 252 arranged outside the outer track 23 and the output end corresponding to the rear side of the second trigger plate 251, a removing port 253 penetratingly arranged on the partition plate 27 and communicating the outer track 23 and the inner track 22, the second trigger plate 251 is arranged outwardly and the inner end abuts against the partition plate 27, the outer end is a free end and is arranged with a gap with the outer side wall of the outer track 23 to form an extrusion port 254, the second trigger plate 251 forms a discharging channel 255 in front of the extrusion port 254 between the outer side wall and the other end of the outer track 23, and the width of the discharging channel 255 gradually increases away from the extrusion port 254; the above structure is arranged by the second trigger plate 251 and the extrusion port, so that when the top of the tine 5 is conveyed to the extrusion port 254, the top of the tine 5 is extruded into and pried open the extrusion port 254 to the discharging channel 255, and the second trigger plate 251 is arranged inwardly; when the bottom of the tine 5 is conveyed to the extrusion port 254, the bottom of the tine 5 cannot be extruded into the extrusion port 254 and presses the second trigger plate 251 forwardly, the second trigger plate 251 is arranged outwardly, and the output end of the removing mechanism 252 drives the tine 5 with the bottom forwardly to be input into the inner track 22 through the removing port 253. Thus, by using the characteristics that the top of the tine 5 can be extruded into the extrusion port 254, the second trigger plate 251 is used for accurate mechanical screening, which is simpler, more accurate and more stable than image recognition detection screening, greatly reduces the risk of misjudgment, and improves the screening stability of the removing device 25. On this basis, due to the first screening by the first trigger plate 24, most of the tines 5 input into the second trigger plate 251 have the top forward, and the tine 5 with the bottom forward is occasionally misinput into the outer track 23, therefore, the tine 5 with the bottom forward only has a few and appears intermittently, which greatly reduces the removing frequency of the removing mechanism 252, improves the removing stability, and avoids the situation that the removing frequency is too fast and the error occurs.

[0055] In order to further improve the stability of the rejection device 25 to the ball tooth 5, the rejection port 253 is provided with a steering plate 256 driven by a rotary drive device (not shown in the figure), which is controlled by an electromagnetic device (not shown in the figure) to magnetically attract or release the ball tooth 5. The rejection mechanism 252 is provided with a telescopic end that penetrates the outer side wall of the outer track 23 and corresponds to the rear side of the second trigger plate 251. The inner track 22 is located above the spiral track 21 and is provided with a discharge port 221 located at the rear side of the rejection port 253. The other end of the inner track 22 is located above the spiral track 21. The above structure is set by the discharge port 221, so that the ball tooth 5 falling into one end of the inner track 22 is conveyed along the inner track 22 to the discharge port 221 and then falls into the spiral track 21, thereby avoiding the interference of the bottom forward ball tooth 5 moving to the rejection port 253 caused by the first trigger plate 24, and allowing the bottom forward ball tooth 5 to fall from a certain height into the spiral track 21 and then be turned over, improving the probability of changing the orientation and reducing the probability of repeated error orientation feeding. At the same time, through the setting of the steering plate 256 and the pushing cylinder, when the bottom forward ball tooth 5 is conveyed to the extrusion port 254 and the second trigger plate 251 is pressed outward, the telescopic end of the pushing cylinder gently pushes the bottom forward ball tooth 5 inward, which is magnetically attracted by the steering plate 256 and rotated to the inner track 22 to release the power. Therefore, when the ball tooth 5 needs to be rejected, the pushing cylinder can be controlled to gently push the ball tooth 5 inward until it can be magnetically attracted by the steering plate 256. This setting makes the ball tooth 5 bear less force and avoids collision with the steering plate 256, thereby avoiding damage to the appearance of the ball tooth 5 during the rejection process, greatly improving the stability of the rejection device 25 to the ball tooth 5.

[0056] In order to improve the stability of the ball tooth 5 on the screw track 21, the screw track 21 is provided with a slow feeding part 211 extending arcuately from outside to inside in the screw direction. After being blocked and guided by the slow feeding part 211, the several ball teeth 5 slow down and then spiral up and forward in sequence, so that the ball teeth 5 on the screw track 21 can slow down and queue up as much as possible through the slow feeding part 211, thereby giving the first trigger plate 24 and the second trigger plate 251 a certain reset time, avoiding the crowding of the ball teeth 5 causing the screening failure of the first trigger plate 24 and the second trigger plate 251. Specifically, the first trigger plate 24 is hinged to the upper end of the screw track 21, and a first torsional spring is arranged at the hinge for driving the first trigger plate 24 to remain horizontal. The inner end of the second trigger plate 251 is hinged to the side wall of the vibration disc 2, and a second torsional spring for driving the second trigger plate 251 to remain at an initial outward swing angle and an angle sensor for detecting the swing angle of the second trigger plate 251 are arranged at the hinge. The torsional force of the first torsional spring is greater than the weight of the top of the ball tooth 5 and less than the weight of the column body of the ball tooth 5. The torsional force of the second torsional spring is less than the forward driving force of the ball tooth 5. The angle sensor sends a signal to the corresponding control system when the second trigger plate 251 swings outward, and the control system controls the rejection device 25 to reject the ball tooth 5 with the bottom forward.

[0057] In order to improve the stability of the ball tooth 5 output by the vibration disc 2 after being fed to the optical detection system 1, the optical detection system 1 further comprises a docking mechanism 19. The docking mechanism 19 comprises a feeding channel 191 docking with the discharge track 26, and a feeding station 192 located at the discharge end of the feeding channel 191 and behind the several detection stations 11. The feeding station 192 comprises a first V-shaped groove 1921 for placing the ball tooth 5 with the opening facing upward, and a second V-shaped groove 1922 located at the front end of the first V-shaped groove 1921 with the opening facing backward. The conveying mechanism 18 comprises several clamping jaws 181 for conveying the several ball teeth 5 to move along the feeding station 192 and the several detection stations 11 in sequence. The above structure, through the setting of the docking mechanism 19, not only enables the feeding channel 191 to stably dock with the discharge track 26, but also enables the ball tooth 5 to be limited in the second V-shaped groove 1922 when the ball tooth 5 is fed to the first V-shaped groove 1921, thereby improving the accuracy of the position of the ball tooth 5 after being fed to the optical detection system 1, and laying a foundation for the accurate conveying of the subsequent conveying mechanism 18.

[0058] In order to classify and recycle the ball teeth 5 after detection, the ball tooth 5 appearance defect optical detection equipment further comprises a discharging system, the shank station 115 comprises two front and rear parallel and same direction rotating rotating rollers 1151, the discharging system comprises a discharging device 3 and a sorting device 4, the discharging device 3 comprises a push piece 31 vertically arranged between one end of the two rotating rollers 1151, a lifting driving mechanism 32 and a pushing driving seat 33 for driving the push piece 31 to lift up and down and move left and right, the left and right sides of the push piece 31 are convex to form a first pushing part 311 and a second pushing part 312, and the other end of the two rotating rollers 1151 is connected with the sorting device 4; the above structure is provided with the discharging device 3, so that a plurality of ball teeth 5 are sequentially input onto the two rotating rollers 1151 and are located between the first pushing part 311 and the second pushing part 312, the push piece 31 is used for the cyclic pushing action of moving to the other end of the two rotating rollers 1151, descending, moving and rising to reset to one end of the two rotating rollers 1151, in the cyclic pushing process, the first pushing part 311 is used for pushing the ball teeth 5 located between the first pushing part 311 and the second pushing part 312 to the other end of the two rotating rollers 1151, and the second pushing part 312 is used for pushing the ball teeth 5 located at the other end of the two rotating rollers 1151 to the sorting device 4. Thus, through the double cyclic pushing of the first pushing part 311 and the second pushing part 312, the two-stage discharging method of pushing the ball teeth 5 to the other end of the two rotating rollers 1151 first and then to the sorting device 4 is realized, the reset stroke of the push piece 31 can be reduced, the reciprocating motion efficiency of the push piece 31 is improved, so as to avoid the long stroke reset of the push piece 31 affecting the efficiency of the ball teeth 5 inputting into the two rotating rollers 1151, and the shank defect detection efficiency is improved while the ball teeth 5 discharging efficiency is ensured.

[0059] In order to facilitate the classification and recycling of the buttons 5 with different defects, the sorting device 4 comprises a left and right extending receiving and conveying line 41, a discharging table 42 connected to the feeding end of the receiving and conveying line 41 and the other end of the two rotating rollers 1151 and arranged obliquely, a discharging conveying line 43 connected to the receiving and conveying line 41 and extending forward and backward, a plurality of unqualified material boxes 44 distributed in sequence from front to back, a discharging port 431 corresponding to the plurality of unqualified material boxes 44 is arranged on one side of the discharging conveying line 43, and a discharging driving mechanism 45 corresponding to the plurality of discharging ports 431 is arranged on the other side. The discharging driving mechanism 45 comprises a discharging cylinder 451, a pushing part 452 transversely extending through the other end of the discharging conveying line 43, and a blocking part 453 connected to the pushing part 452 and downwardly folded to block the discharging port 431. The above structure is provided with a plurality of unqualified material boxes 44 and a discharging driving mechanism 45, so that when the unqualified buttons 5 are conveyed to the corresponding discharging port 431 through the discharging conveying line 43, the corresponding pushing part 452 is transversely extended to drive the blocking part 453 to be transversely extended to the corresponding unqualified material box 44 to open the discharging port 431, and the unqualified buttons 5 are pushed to fall into the unqualified material box 44 through the discharging port 431. Therefore, through the arrangement of the blocking part 453 and the pushing part 452, only when the buttons 5 with corresponding serial numbers need to be discharged into the corresponding unqualified material box 44, the corresponding discharging port 431 is opened and the buttons 5 are pushed into the unqualified material box 44, so that the classification and recycling of buttons 5 with different types of defects are stably realized, and the qualified buttons 5 are directly output by the discharging conveying line 43 and then collected, thereby improving the efficiency of the classification and discharging of the buttons 5.

[0060] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A ball-end appearance defect optical inspection apparatus characterized by comprising: The application relates to an optical detection system (1) comprising a plurality of detection stations (11) for placing tines (5), and top surface detection devices (12), top end detection devices (13), and a plurality of appearance detection devices corresponding to the detection stations (11), respectively, wherein the top end of the tine (5) is contracted, the top surface detection device (12) comprises a plurality of reflective baffles (121) for covering the outside of the top of the tine (5), a plurality of circumferential light sources (122) arranged inside the reflective baffles (121) and used for irradiating the outer periphery of the top of the tine (5), and top surface cameras (123) corresponding to the middle part of the reflective baffles (121) and used for focusing on the outer periphery of the top of the tine to shoot a first top image, wherein the first top image at least comprises a clear image of the outer periphery of the top of the tine (5), the top end detection device (13) comprises a reflective cover (131) with a middle hole and used for covering the outer periphery of the top end of the tine (5), a top end light source (132) corresponding to the middle hole of the reflective cover (131) and used for irradiating the top end of the tine (5), and a top end camera (133) corresponding to the middle hole of the reflective cover (131) and used for focusing on the top end of the tine to shoot a second top image, wherein the second top image at least comprises a clear image of the top end of the tine (5), and the top end image and the top periphery image of the same tine (5) form a complete top image. The feeding system comprises a vibrating disc (2) and a vibration driving device for driving the vibrating disc (2) to vibrate and feed, the inner wall of the vibrating disc (2) is provided with a spiral track (21) spirally ascending, an inner track (22) and an outer track (23) which are distributed inside and outside and are arranged in an arc shape, the upper end of the spiral track (21) is provided with a first trigger plate (24) which rotates up and down, the outer track (23) is located outside the spiral track (21) and is connected to the upper end of the spiral track (21) and the outside of the first trigger plate (24) at one end and is provided with a rejection device (25) for screening and rejecting tines (5) with the bottom facing forward at the other end, one end of the inner track (22) is located below the first trigger plate (24), and the other end is located above the spiral track (21), the outer side of the vibrating disc (2) is provided with a discharge track (26) connected to the other end of the outer track (23) and the optical detection system (1), and the optical detection system (1) further comprises a carrying mechanism (18) for carrying a plurality of tines (5) from back to front and moving along a plurality of detection stations (11) in sequence, a plurality of tines (5) are laid along the spiral track (21) and spirally ascend under the centrifugal vibration of the vibrating disc (2), when the top of the tine (5) is output from the upper end of the spiral track (21) with the front, the center of gravity is backward and falls into the inner track (22) under the first trigger plate (24) before rolling outward under the centrifugal vibration, when the bottom of the tine (5) is output from the upper end of the spiral track (21) with the front, the center of gravity is forward and falls into the inner track (22) under the first trigger plate (24) before rolling outward under the centrifugal vibration. ​ 2. A ball-end appearance defect optical inspection apparatus as set forth in claim 1, characterized by The top of the ball tooth (5) is provided with a top end rounded cornered conical shape, the top end detection device (13) and the top surface detection device (12) are located on the right side of the detection station (11), the top end image at least includes half of the top of the ball tooth (5) near the top of the cone, the top periphery image at least includes the other half of the top of the ball tooth (5) near the bottom of the cone, the top end detection device (13) further comprises a top end detection moving seat (134) driven by a top end detection driving mechanism to move left and right, the reflector cover (131), the top end light source (132) and the top end camera (133) are arranged on the top end detection moving seat (134), the reflector cover (131) is provided as a semi-spherical shape with an opening facing left and a hole in the middle of the right end, the top end light source (132) and the top end camera (133) are sequentially arranged on the right side of the reflector cover (131) and correspond to the hole in the middle of the reflector cover (131), the top surface detection device (12) further comprises a top surface detection moving seat (124) driven by a top surface detection driving mechanism to move left and right, a plurality of reflector baffles (121), a plurality of circumferential light sources (122) and the top surface camera (123) are arranged on the top surface detection moving seat (124), a plurality of reflector baffles (121) correspond to the front and rear sides of the ball tooth (5), a plurality of circumferential light sources (122) correspond to the upper side, the lower side, the front side and the rear side of the ball tooth (5), two detection stations (11) corresponding to the top end detection device (13) and the top surface detection device (12) are respectively provided with light shielding baffles (14) located on the front and rear sides of the ball tooth (5).

3. A ball-end appearance defect optical inspection apparatus as set forth in claim 1, wherein A plurality of detection stations (11) include size stations (111), top surface stations (112), top end stations (113), bottom stations (114) and column body stations (115) distributed in sequence from back to front, the top surface detection device (12) and the top end detection device (13) correspond to the top surface stations (112) and the top end stations (113) respectively, a plurality of appearance detection devices include size detection devices (15), bottom detection devices (16) and column body detection devices (17) corresponding to the size stations (111), the bottom stations (114) and the column body stations (115) respectively, the size detection devices (15), the bottom detection devices (16) and the column body detection devices (17) respectively include size cameras (151) for photographing and detecting the length of the ball tooth (5), bottom cameras (161) for photographing and detecting defects of the bottom of the ball tooth (5) and column body cameras (171) for photographing and detecting defects of the column body of the ball tooth (5), the column body stations (115) are used for placing the ball tooth (5) and driving the ball tooth (5) to rotate.

4. A ball-end appearance defect optical inspection apparatus as set forth in claim 1, wherein The inner track (22) and the outer track (23) are of the same height and are separated by an arc-shaped partition (27), the ejecting device (25) comprises a second trigger plate (251) horizontally rotatingly arranged in the other end of the outer track (23), an ejecting mechanism (252) arranged outside the outer track (23) and having an output end corresponding to the rear side of the second trigger plate (251), an ejecting port (253) penetratingly arranged on the partition (27) and communicating the outer track (23) and the inner track (22), the second trigger plate (251) is arranged with an outer swing and an inner end abutting the partition (27), and an outer end being a free end and being arranged with a gap with the outer side wall of the outer track (23) to form an extrusion port (254), the outer side wall of the second trigger plate (251) and the other end of the outer track (23) form a discharging channel (255) located in the front side of the extrusion port (254), and the discharging channel (255) gradually increases in width in the direction away from the extrusion port (254); when the top of the ball tooth (5) is conveyed to the front of the extrusion port (254), the top of the ball tooth (5) is extruded into and pried open the extrusion port (254) to the discharging channel (255), and the second trigger plate (251) swings inward; when the bottom of the ball tooth (5) is conveyed to the front of the extrusion port (254), the bottom of the ball tooth (5) cannot be extruded into the extrusion port (254) and presses the second trigger plate (251) forward, the second trigger plate (251) swings outward, and the output end of the ejecting mechanism (252) drives the ball tooth (5) with the bottom forward inward through the ejecting port (253) into the inner track (22).

5. A ball-end appearance defect optical inspection apparatus as claimed in claim 4, characterized in that, The ejecting port (253) is provided with a rotating plate (256) driven by a rotating driving device to rotate laterally, the rotating plate (256) is controlled by an electromagnet device to magnetically attract the ball tooth (5) or release the ball tooth (5), the ejecting mechanism (252) is provided with a telescopic end penetrating the outer side wall of the outer track (23) and corresponding to the rear side of the second trigger plate (251), the inner track (22) is located above the spiral track (21) and is provided with a discharging port (221) penetratingly arranged at the rear side of the ejecting port (253), and the other end of the inner track (22) is located above the spiral track (21) with a gap; the ball tooth (5) falling to one end of the inner track (22) is conveyed along the inner track (22) to the discharging port (221) and then falls to the spiral track (21); when the bottom of the ball tooth (5) is conveyed to the front of the extrusion port (254) and the second trigger plate (251) swings outward under pressure, the telescopic end of the ejecting mechanism (252) slightly pushes the ball tooth (5) with the bottom forward inward, and the ball tooth (5) is magnetically attracted by the rotating plate (256) under power and rotates to the inner track (22) to be released under power.

6. A ball-end appearance defect optical inspection apparatus as set forth in claim 4, wherein The spiral track (21) is provided with a material slowing member (211) extending in an arc shape from outside to inside in the spiral direction, a plurality of the tines (5) are slowed down and spirally ascend and advance in turn after being blocked and guided by the material slowing member (211), the first trigger plate (24) is hinged to the upper end of the spiral track (21) and a first torsional spring for driving the first trigger plate (24) to keep horizontal is arranged at the hinge, the inner end of the second trigger plate (251) is hinged to the side wall of the vibrating disc (2) and a second torsional spring for driving the second trigger plate (251) to keep an initial outward swing angle and an angle sensor for detecting the swing angle of the second trigger plate (251) are arranged at the hinge.

7. A ball-end appearance defect optical inspection apparatus as claimed in claim 1, wherein The optical detection system (1) further comprises a docking mechanism (19), the docking mechanism (19) comprises a feeding channel (191) for docking the discharge track (26), a feeding station (192) for docking the discharge end of the feeding channel (191) and located at the rear side of a plurality of the detection stations (11), the feeding station (192) comprises a first V-shaped groove (1921) for placing the tine (5) with an opening facing upwards, a second V-shaped groove (1922) located at the front end of the first V-shaped groove (1921) with an opening facing backwards, the conveying mechanism (18) comprises a plurality of clamping jaws (181) for conveying a plurality of the tines (5) to move along the feeding station (192) and a plurality of the detection stations (11) in turn; during the process that the feeding channel (191) outputs the tine (5) to the first V-shaped groove (1921), the top end of the tine (5) is limited in the second V-shaped groove (1922).

8. A ball-end appearance defect optical inspection apparatus as set forth in claim 3, wherein Further comprising a discharging system, the column body station (115) comprises two front and rear parallel and same direction rotating rotating rollers (1151), the discharging system comprises a discharging device (3) and a sorting device (4), the discharging device (3) comprises a pushing piece (31) vertically arranged between one end of the two rotating rollers (1151), a lifting driving mechanism (32) and a pushing driving seat (33) for driving the pushing piece (31) to lift up and down and move left and right, the left and right sides of the pushing piece (31) are convex to form a first pushing part (311) and a second pushing part (312), the other end of the two rotating rollers (1151) is connected with the sorting device (4); a plurality of the tines (5) are sequentially input into the two rotating rollers (1151) and located between the first pushing part (311) and the second pushing part (312), the pushing piece (31) is used for the circular pushing action of moving to the other end of the two rotating rollers (1151), descending, moving and rising to reset to one end of the two rotating rollers (1151), in the circular pushing process, the first pushing part (311) is used for pushing the tine (5) located between the first pushing part (311) and the second pushing part (312) to the other end of the two rotating rollers (1151), and the second pushing part (312) is used for pushing the tine (5) located at the other end of the two rotating rollers (1151) to the sorting device (4).

9. A ball-end appearance defect optical inspection apparatus as claimed in claim 8, characterized by, The sorting device (4) comprises a left and right extending receiving conveying line (41), a discharging table (42) which is connected with the feeding end of the receiving conveying line (41) and the other end of the rotating roller (1151) and is arranged obliquely, a discharging conveying line (43) which is connected with the receiving conveying line (41) and extends forward and backward, a plurality of unqualified material boxes (44) which are distributed forward and backward in sequence, a discharging port (431) corresponding to the plurality of unqualified material boxes (44) is arranged on one side of the discharging conveying line (43), a discharging driving mechanism (45) corresponding to the plurality of discharging ports (431) is arranged on the other side, the discharging driving mechanism (45) comprises a discharging cylinder (451), a pushing part (452) which is penetrated through the other end of the discharging conveying line (43) and is transversely telescopic to the discharging cylinder (451), and a blocking part (453) which is connected with the pushing part (452) and is folded downward to shield the discharging port (431); when the unqualified ball tooth (5) is conveyed to the corresponding discharging port (431) through the discharging conveying line (43), the corresponding pushing part (452) is transversely extended to drive the blocking part (453) to be transversely extended to the corresponding unqualified material box (44) to open the discharging port (431), and the unqualified ball tooth (5) is pushed to fall into the unqualified material box (44) through the discharging port (431).

Images