Defect detection device for sealing surface of oil seal

Abstract

The invention relates to the technical field of oil seal defect detection, and discloses an oil seal sealing surface defect detection device which comprises a visual detection table, the visual detection table comprises a glass detection disc, a conveying belt is arranged on the outer side of the glass detection disc, and a driving assembly is arranged at the joint of the conveying belt and the glass detection disc. A guide assembly is installed on one side of the driving assembly, after the oil seal enters the guide assembly, a sensor on a first guide shell recognizes the front face and the back face, and if the oil seal is the back face, a servo motor drives an electric push rod to drive a clamping plate to be turned over and adjusted, and after the oil seal enters a second guide shell, a hydraulic rod pushes a piston plate to extrude gas in a sliding groove; a limiting rod of a limiting assembly is driven by a flow guide groove to rotate to a vertical state, an oil seal is accurately positioned under a detection ring in cooperation with a roller of a telescopic rod, then lines are positioned through a laser detector, a second driving motor drives a gear belt to drive the oil seal to rotate, and the lines are strictly perpendicular to the circle center of a glass detection disc.

Description

Technical Field

[0001] The present invention relates to the technical field of oil seal defect detection, and in particular to a defect detection device for an oil seal sealing surface. Background Art

[0002] Oil seals are key components to ensure the sealing performance of equipment such as pipelines and valve connections. They are widely used in automobiles, hydraulic and pneumatic equipment and other fields. The quality of their sealing surfaces directly affects the reliability of mechanical equipment operation. If there are defects such as scratches, dents, and cracks, it is very easy to cause faults such as oil leakage, which in turn affects the normal operation of the equipment and even causes safety accidents. With the development of machine vision technology, oil seal defect detection systems have gradually matured, greatly improving detection efficiency, but existing detection devices still have some problems. On the one hand, since the metal surface of the oil seal has reflective properties, and the top structure is a rubber ring and a spring, and the side surface is a curved smooth metal, it is difficult to use traditional optical paths to obtain images with uniform lighting and obvious defect features on each surface, resulting in the inability to identify some defect features. On the other hand, oil seal defects may appear in different positions such as the rubber ring, spring, side wall, and bottom. Some detection systems can only detect one or part of the defects and cannot complete all-round detection.

[0003] For example, the existing Chinese patent with the announcement number CN115508370A discloses an all-round oil seal defect detection device. The loading area is arranged at the front end of the device of the present invention, and is used to transmit the oil seal to be inspected to the specified position of the inspection platform; the unloading area is arranged at the rear end of the device of the present invention, and is used to deliver the inspected oil seal to the corresponding position; the inspection platform is arranged between the loading area and the unloading area, and is used to connect the loading area and the unloading area, and is a platform for completing image acquisition and processing actions.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: in the actual transportation process of the existing technology, the oil seal may not be placed completely at the ideal angle, and there may be a slight angle deviation, which will cause the angle of the laser scanning and the angle of the camera to be inconsistent with the preset value, resulting in errors in the acquired images and scanning data, affecting the judgment of defects. For example, some inclined stripes may be misjudged as cracks. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the oil seal in the prior art may not be placed completely at an ideal angle and may have a slight angle deviation. For this reason, we propose a defect detection device for the sealing surface of the oil seal.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: a defect detection device for an oil seal sealing surface, comprising a visual inspection platform, the visual inspection platform comprising a glass inspection disk, a conveyor belt being provided on the outside of the glass inspection disk, the oil seals on the conveyor belt being unevenly arranged, a drive assembly being provided at the upper end of the connection between the conveyor belt and the glass inspection disk, and a guide assembly being installed on one side of the drive assembly. When the device is in use, the oil seal is conveyed to the glass inspection disk for visual inspection through the conveyor belt, and the oil seal is driven to rotate on the glass inspection disk through the drive assembly. At the same time, the guide assembly is used to make the distance between the oil seal and the edge of the glass inspection disk consistent, and the oil seal pattern is always perpendicular to the center of the circle, which greatly reduces the misjudgment of inclined stripes as cracks, improves the detection accuracy, and ensures reliable oil seal quality detection.

[0007] Preferably, a front and back defect camera is provided on the outside of the glass inspection plate, a thickness detection camera is provided on the outside of the glass inspection plate, a burr and size detection camera is provided on the outside of the glass inspection plate, an infrared imaging detection camera is provided on the outside of the glass inspection plate, and a hydraulic push rod is installed on the upper end of the glass inspection plate. The front and back defect cameras, thickness detection cameras, burr and size detection cameras, and infrared imaging detection cameras in the present invention belong to the existing technology in this field, and their working principles are already well-known technologies. The models are selected according to actual use. Therefore, the control method and wiring layout of the front and back defect cameras, thickness detection cameras, burr and size detection cameras, and infrared imaging detection cameras will no longer be explained in detail. The glass inspection disk is running, and the front and back defect cameras capture the front and back defects of the sealing surface, the thickness inspection camera accurately measures the thickness deviation, the burr and size inspection camera identifies edge burrs and size deviations, and the infrared imaging inspection camera penetrates the surface to detect internal bubbles and other hidden dangers. The data of each camera is analyzed synchronously. If it is judged to be unqualified, the glass inspection disk will run to the corresponding position, and the hydraulic push rod will push it to the waste area. The qualified products will enter the collection device along the conveyor belt. This process realizes all-round screening from surface to interior, from size to defects through multi-camera collaborative inspection, greatly reducing the missed detection rate, and each camera has a clear division of labor. While ensuring the inspection efficiency, the misjudgment rate is controlled below 0.5%, taking into account the comprehensiveness and efficiency of the inspection.

[0008] Preferably, a circular hole is provided in the center of the glass inspection disk, a fixed disk is provided at the lower end of the glass inspection disk, a support column is rotatably installed at the lower end of the fixed disk, a circle of gear rails is provided at the inner edge of the circular hole, and the gear rails are engaged with the driving component. When the device is in use, the driving component rotates and engages with the gear rails, thereby driving the glass inspection disk and the oil seal at its upper end to rotate along the support column as the center of the circle, driving the oil seal to be inspected by each inspection camera.

[0009] Preferably, the driving assembly includes a connecting rod, the upper end of the connecting rod is fixedly mounted with a connecting shell, a driving motor 1 is fixedly mounted inside the connecting shell, the driving end of the driving motor 1 passes through the connecting rod and is fixedly mounted to the guide plate, a conveyor belt is provided on the outside of the driving end of the driving motor 1, a rotating disk is provided on the inside of one end of the conveyor belt, a connecting plate is rotatably mounted on the lower end of the rotating disk, the connecting plate is fixedly connected to the connecting rod, the lower end of the rotating disk passes through the connecting plate and is fixedly mounted with a gear column, and the gear column is meshed with the rack.

[0010] Preferably, a guide plate is installed at the lower end of the connecting rod corresponding to the conveyor belt, and the connecting rod and the guide assembly are fixed by a fixing rod. In the process of conveying the oil seal, when the oil seal is conveyed by the conveyor belt to the glass detection plate, the oil seal falls onto the glass detection plate under the guidance of the guide plate. At this time, the drive motor is started to drive the guide plate to rotate, and the oil seal is conveyed to the glass detection plate through the guide plate and the guide plate. Since two sets of oil seals may be conveyed tightly together during transportation, the previous oil seal may be squeezed by the next oil seal when being conveyed by the guide plate and the guide plate, resulting in the previous oil seal being conveyed to the glass The position of the inspection disk changes from the preset value, resulting in the laser scanning angle and the camera shooting angle being inconsistent with the preset value, causing errors in the acquired image and scanning data, affecting the judgment of defects. Therefore, when the drive motor rotates, it synchronously drives the rotating disk to rotate, and then drives the gear column at the lower end of the rotating disk to rotate, so that the gear column drives the glass inspection disk to rotate, so that the rotation speed of the glass inspection disk and the guide disk is the same. When the oil seal is conveyed to the glass inspection disk, it is simultaneously conveyed to the inside of the guide assembly, so that the distance between the oil seal and the edge of the glass inspection disk is consistent, and the oil seal pattern is always perpendicular to the center of the circle, thereby improving the detection efficiency of the oil seal.

[0011] Preferably, the guide assembly includes a guide shell 1 and a guide shell 2, two groups of fixed plates are arranged between the guide shell 1 and the guide shell 2, servo motors are arranged on the outside of the two groups of fixed plates, the driving end of the servo motor is fixedly installed with an electric push rod, the driving end of the electric push rod is fixedly installed with a splint, the splint is fitted to the inner side of the fixed plate, and a detection sensor is installed on the upper end of the guide shell 1, model is Omron E3Z-T61-L, when the oil seal passes through the guide assembly, it is first limited by the guide shell 1, when the oil seal passes through the guide shell 1, the front and back sides of the oil seal are identified by the detection sensor, when the oil seal is on the back side, after starting the driving ends of the two groups of electric push rods to clamp it, the two groups of servo motors are started to rotate, the clamped oil seal is turned over, when the oil seal is on the front side, it is not clamped and turned over, after passing through the two groups of fixed plates, it passes through the guide shell 2, and the oil seal is rotated and aligned with the grain through the guide shell 2.

[0012] Preferably, a detection ring is installed inside the guide shell 2, and a laser detector is provided inside the detection ring. The model of the laser detector is KeyenceLK-G5000. The laser detector at the lower end of the detection ring can accurately locate the position of the texture on the upper end of the oil seal, and the internal structure of the guide shell 2 can always keep the texture of the oil seal perpendicular to the center of the glass detection disk.

[0013] Preferably, a placement groove is opened inside one side of the guide shell 2, and a drive motor 2 is arranged inside the placement groove. A gear belt is meshed with the outer side of the drive motor 2, and the gear belt is rotatably connected to the guide shell 2. A support rod is fixedly installed at the lower end of the inner part of the guide shell 2, and the support rod is arranged in a conical shape. A rotating column is rotatably installed on the upper end of the support rod.

[0014] Preferably, a slide groove and an exhaust groove are provided inside the other side of the guide shell 2, and a hydraulic rod is fixedly installed on the outer side of the guide shell 2. The driving end of the hydraulic rod passes through the guide shell 2 and is fixedly installed with a piston plate. The piston plate matches the slide groove, and multiple sets of telescopic rods are fixedly installed on one side of the piston plate, and multiple sets of rollers are provided at one end of the telescopic rod.

[0015] Preferably, a guide groove is provided inside the upper end of the guide shell 2, which is connected to the exhaust groove and the slide groove. A limit assembly is provided inside the guide groove. A photoelectric sensor is fixedly installed on the upper end of the guide shell 2, and the model is OmronE3Z-D61.

[0016] Preferably, the limit assembly includes a piston disc, the piston disc matches the guide groove, a connecting tube is fixedly installed on one side of the piston disc, a guide groove is opened on the outside of the connecting tube, a connecting column is slidably installed inside the connecting tube, a limiting column is fixedly installed on the outside of the connecting column, the limiting column matches the guide groove, and a limiting rod is fixedly installed on the outside of the connecting column. When the photoelectric sensor at the upper end of the guide shell 2 detects that the oil seal has completely entered the interior of the guide shell 2, the hydraulic rod is started to push the piston plate to slide inside the slide groove. Since the slide groove, the guide groove and the exhaust groove are in a vacuum state, the gas is squeezed by the piston plate and pushed into the interior of the guide groove to drive the piston disc forward. The plug disc cannot rotate under the restriction of the guide groove. At this time, the connecting pipe on one side of the piston disc will push the connecting column to rotate. At the same time, the limiting rod on the outside of the connecting column will synchronously rotate to the vertical guide shell 2. When the limiting rod is preset to be vertical to the guide shell 2, when the limiting rod touches the inner wall of the oil seal, the position of the oil seal is just below the detection ring. After the oil seal enters the guide shell 2, under the rotation of the glass detection disc, one end of the oil seal is first lifted by the tapered support rod. At this time, the oil seal continues to be transported. When the oil seal completely enters the guide shell 2, the piston plate is pushed to move by the hydraulic rod, driving multiple sets of telescopic rods to gradually approach the oil seal and gradually squeeze it close to the gear belt , because the limiting rod of the oil seal gradually rotates to a vertical state during the squeezing process, although the oil seal is transported along with the glass detection plate, it cannot be moved when the center of the oil seal is moved to the same horizontal line as the center of the detection ring. At this time, the oil seal will not change its position due to friction. When the telescopic rod gradually squeezes the oil seal so that it is gradually squeezed from an inclined state to a horizontal state, the oil seal is not affected by the rotation of the glass detection plate. At this time, the center of the oil seal and the center of the detection ring are in the same vertical position. The laser detector at the lower end of the detection ring is used to locate the texture of the oil seal, and the gear belt is driven by the second drive motor to rotate the oil seal. Due to the telescopic rod A roller is provided at the end. When the gear belt rotates the oil seal, the oil seal rotates immediately so that its oil seal pattern is perpendicular to the center of the glass inspection disk. After alignment, the hydraulic rod is started to move in the opposite direction, so that the oil seal gradually contacts and clamps, and at the same time the limiting rod rotates and resets. The oil seal tilts to one side under the action of the support rod. At this time, the oil seal is driven to separate from the guide shell 2 under the action of the rotational force of the glass inspection disk. Since the guide shell 2 is fan-shaped, the oil seal will not be squeezed by the inner wall of the guide shell 2 during the process of separating from the guide shell 2. When the oil seal separates from the guide shell 2, the distance between the oil seal and the edge of the glass inspection disk is also the same, which improves the detection efficiency of each detection camera.

[0017] The technical effects and advantages of the present invention are as follows: In the present invention, first, the driving motor drives the guide plate to rotate, and at the same time, the rotating plate and the gear column are linked through the transmission belt to make the glass detection plate and the guide plate rotate synchronously, and cooperate with the guide plate to avoid position deviation caused by the extrusion of the front and rear oil seals; then, the oil seal enters the guide assembly, and the sensor on the guide shell identifies the front and back sides. If it is the back side, the servo motor drives the electric telescopic rod to drive the splint to flip and adjust, so as to ensure the uniformity of the detection reference; finally, the oil seal enters the guide shell two, and after the photoelectric sensor at the upper end detects that the oil seal has completely entered, the hydraulic rod pushes the piston plate to squeeze the gas in the slide groove, and drives the limit rod of the limit assembly to rotate to a vertical state through the guide groove, and cooperates with the roller of the telescopic rod to accurately position the oil seal directly below the detection ring, and then the laser detector is used to locate the texture, and the driving motor two drives the gear belt to drive the oil seal to rotate, so that the texture is strictly perpendicular to the center of the glass detection disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components: Figure 1 This is a schematic diagram of the overall structure of the visual inspection platform of the present invention; Figure 2 This is a schematic diagram of the top view of the visual inspection platform of the present invention; Figure 3 It is a schematic diagram of the structure of the visual inspection platform of the present invention from a bottom-up perspective; Figure 4 This is a partial front structural diagram of the visual inspection platform of the present invention; Figure 5 This is a schematic structural diagram of the guide assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the guide housing 2 of the present invention; Figure 7 This is a schematic diagram of the internal explosion structure of the guide shell 2 of the present invention; Figure 8 Schematic diagram of the internal structure of the guide shell 2 of the present invention Figure 1 ; Figure 9 Schematic diagram of the internal structure of the guide shell 2 of the present invention Figure 2 ; Figure 10 It is a schematic structural diagram of the limiting component of the present invention.

[0019] Legend: 1. Visual inspection table; 11. Glass inspection plate; 111. Round hole; 112. Fixed plate; 113. Rack rail; 114. Support column; 12. Conveyor belt; 13. Drive assembly; 131. Connecting rod; 132. Connecting shell; 133. Drive motor 1; 1331. Conveyor belt; 134. Guide plate; 135. Connecting plate; 136. Rotating plate; 137. Gear column; 138. Fixed rod; 139. Guide plate; 14. Guide assembly; 141. Guide shell 1; 1411. Detection sensor; 142. Guide shell 2; 1421. Detection Ring; 1422, placement groove; 1423, drive motor 2; 1424, gear belt; 1425, support rod; 1426, guide groove; 1427, hydraulic rod; 1428, piston plate; 1429, telescopic rod; 1430, slide; 1431, exhaust groove; 143, servo motor; 144, fixing plate; 145, photoelectric sensor; 146, splint; 147, limit assembly; 1471, piston disc; 1472, connecting pipe; 1473, guide groove; 1474, connecting column; 1475, limit column; 1476, limit rod; 2, oil seal. DETAILED DESCRIPTION

[0020] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0021] Reference Figure 1-2 As shown, the present invention provides a technical solution: a defect detection device for an oil seal sealing surface, comprising a visual inspection platform 1, the visual inspection platform 1 comprising a glass inspection disk 11, a conveyor belt 12 being provided on the outer side of the glass inspection disk 11, the oil seals 2 on the conveyor belt 12 being unevenly arranged, a drive assembly 13 being provided at the upper end of the connection between the conveyor belt 12 and the glass inspection disk 11, a guide assembly 14 being installed on one side of the drive assembly 13, when the device is in use, the oil seal 2 is conveyed to the glass inspection disk 11 for visual inspection by the conveyor belt 12, and the oil seal 2 is driven to rotate on the glass inspection disk 11 by the drive assembly 13, and at the same time, the distance between the oil seal 2 and the edge of the glass inspection disk 11 is made consistent by the guide assembly 14, the lines of the oil seal 2 are always perpendicular to the center of the circle, which greatly reduces the misjudgment of inclined stripes as cracks, improves the detection accuracy, and ensures reliable quality detection of the oil seal 2.

[0022] Reference Figure 1-2As shown, in this embodiment: a front and back defect camera is provided on the outside of the glass inspection disk 11, a thickness detection camera is provided on the outside of the glass inspection disk 11, a burr and size detection camera is provided on the outside of the glass inspection disk 11, an infrared imaging detection camera is provided on the outside of the glass inspection disk 11, and a hydraulic push rod is installed on the upper end of the glass inspection disk 11. The front and back defect cameras, thickness detection cameras, burr and size detection cameras, and infrared imaging detection cameras in the present invention belong to the existing technology in this field, and their working principles are already well-known technologies. The models are selected according to actual use. Therefore, the control method and connection of the front and back defect cameras, thickness detection cameras, burr and size detection cameras, and infrared imaging detection cameras will not be explained in detail. The line is arranged, the glass inspection disk 11 is running, the front and back defect cameras capture the front and back defects of the sealing surface, the thickness detection camera accurately measures the thickness deviation, the burr and size detection camera identifies edge burrs and size deviations, and the infrared imaging detection camera penetrates the surface to detect internal bubbles and other hidden dangers. The data of each camera is analyzed synchronously. If it is judged to be unqualified, when the glass inspection disk 11 runs to the corresponding position, the hydraulic push rod pushes it to the waste area, and the qualified products enter the collection device with the conveyor belt 12. This process realizes all-round screening from surface to interior, from size to defects through multi-camera collaborative detection, greatly reducing the missed detection rate, and each camera has a clear division of labor. While ensuring the detection efficiency, the misjudgment rate is controlled below 0.5%, taking into account both comprehensiveness and efficiency of detection.

[0023] Reference Figure 2-3 As shown, in this embodiment: a circular hole 111 is opened in the center of the glass detection disk 11, a fixed disk 112 is provided at the lower end of the glass detection disk 11, and a support column 114 is rotatably installed at the lower end of the fixed disk 112. A circle of racks 113 is provided on the inner edge of the circular hole 111, and the racks 113 are engaged with the driving component 13. When the device is in use, the driving component 13 rotates and engages with the racks 113, thereby driving the glass detection disk 11 and the oil seal 2 at its upper end to rotate along the support column 114 as the center of the circle, driving the oil seal 2 to be inspected by each inspection camera.

[0024] Reference Figure 3-4 As shown, in this embodiment: the driving component 13 includes a connecting rod 131, the upper end of the connecting rod 131 is fixedly installed with a connecting shell 132, the interior of the connecting shell 132 is fixedly installed with a driving motor 133, the driving end of the driving motor 133 passes through the connecting rod 131 and is fixedly installed with a guide plate 134, a conveying belt 1331 is provided on the outer side of the driving end of the driving motor 133, a rotating disk 136 is provided on the inner side of one end of the conveying belt 1331, a connecting plate 135 is rotatably installed on the lower end of the rotating disk 136, the connecting plate 135 is fixedly connected to the connecting rod 131, the lower end of the rotating disk 136 passes through the connecting plate 135 and is fixedly installed with a gear column 137, and the gear column 137 is meshed with the rack 113.

[0025] Reference Figure 3-4 As shown, in this embodiment: a guide plate 139 is installed at the lower end of the connecting rod 131 corresponding to the conveyor belt 12, and the connecting rod 131 and the guide assembly 14 are fixed by a fixing rod 138. In the process of conveying the oil seal 2, when the oil seal 2 is conveyed by the conveyor belt 12 to the glass detection plate 11, the oil seal 2 falls onto the glass detection plate 11 under the guidance of the guide plate 139. At this time, the driving motor 133 is started to drive the guide plate 134 to rotate, and the oil seal 2 is conveyed to the glass detection plate 11 through the guide plate 134 and the guide plate 139. Since the oil seal 2 may be conveyed in two groups of oil seals 2 in close contact during transportation, the current oil seal 2 may be squeezed by the subsequent oil seal 2 when being conveyed by the guide plate 134 and the guide plate 139. This causes the position of the previous oil seal 2 being conveyed to the glass inspection disk 11 to change from the preset value, resulting in the laser scanning angle and the camera shooting angle being inconsistent with the preset value, resulting in errors in the acquired image and scanning data, affecting the judgment of defects. Therefore, when the driving motor 133 rotates, it synchronously drives the rotating disk 136 to rotate, and then drives the gear column 137 at the lower end of the rotating disk 136 to rotate, so that the gear column 137 drives the glass inspection disk 11 to rotate, so that the rotation speed of the glass inspection disk 11 and the guide disk 134 are the same. When the oil seal 2 is conveyed to the glass inspection disk 11, it is synchronously conveyed to the inside of the guide assembly 14, so that the distance between the oil seal 2 and the edge of the glass inspection disk 11 is consistent, and the texture of the oil seal 2 is always perpendicular to the center of the circle, thereby improving the inspection efficiency of the oil seal 2.

[0026] Reference Figure 3-5 As shown, in this embodiment: the guide assembly 14 includes a guide shell 141 and a guide shell 2 142, two sets of fixed plates 144 are provided between the guide shell 141 and the guide shell 2 142, and a servo motor 143 is provided on the outside of the two sets of fixed plates 144. The driving end of the servo motor 143 is fixedly installed with an electric push rod, and the driving end of the electric push rod is fixedly installed with a clamping plate 146. The clamping plate 146 is attached to the inner side of the fixed plate 144. The upper end of the guide shell 141 is installed with a detection sensor 1411, model Omron E3Z-T61-L When the oil seal 2 passes through the guide assembly 14, it first moves in a limited manner through the guide housing 141. After the oil seal passes through the guide housing 141, the front and back sides of the oil seal 2 are identified by the detection sensor 1411. When the oil seal 2 is on the back side, the driving ends of the two sets of electric push rods are started to clamp it, and then the two sets of servo motors 143 are started to rotate to clamp the oil seal 2 and turn it over. When the oil seal 2 is on the front side, it is not clamped and turned over. After passing through the two sets of fixing plates 144, it passes through the guide housing 2 142, and the oil seal 2 is rotated and aligned with the grain through the guide housing 142.

[0027] Reference Figure 5-6As shown, in this embodiment: a detection ring 1421 is installed inside the guide shell 142, and a laser detector is set inside the detection ring 1421. The model of the laser detector is KeyenceLK-G5000. The laser detector at the lower end of the detection ring 1421 can accurately locate the position of the texture on the upper end of the oil seal 2, and the internal structure of the guide shell 142 can always keep the texture of the oil seal 2 perpendicular to the center of the glass detection disk 11.

[0028] Reference Figure 5-7 As shown, in this embodiment: a placement groove 1422 is opened inside one side of the guide shell 142, and a drive motor 1423 is arranged inside the placement groove 1422. A gear belt 1424 is meshed with the outer side of the drive motor 1423. The gear belt 1424 is rotatably connected to the guide shell 142. A support rod 1425 is fixedly installed at the lower end of the inner part of the guide shell 142. The support rod 1425 is set in a cone shape, and a rotating column is rotatably installed on the upper end of the support rod 1425.

[0029] Reference Figure 7-9 As shown, in this embodiment: a slide groove 1430 and an exhaust groove 1431 are opened inside the other side of the guide shell 142, and a hydraulic rod 1427 is fixedly installed on the outer side of the guide shell 142. The driving end of the hydraulic rod 1427 passes through the guide shell 142 and is fixedly installed with a piston plate 1428. The piston plate 1428 matches the slide groove 1430. A plurality of groups of telescopic rods 1429 are fixedly installed on one side of the piston plate 1428, and a plurality of groups of rollers are provided at one end of the telescopic rod 1429.

[0030] Reference Figure 7-9 As shown, in this embodiment: a guide groove 1426 is opened inside the upper end of the guide shell 142, the guide groove 1426 is connected with the exhaust groove 1431 and the slide groove 1430, a limiting component 147 is set inside the guide groove 1426, and a photoelectric sensor 145 of model OmronE3Z-D61 is fixedly installed on the upper end of the guide shell 142.

[0031] Reference Figure 7-10As shown, in this embodiment: the limiting assembly 147 includes a piston disc 1471, the piston disc 1471 matches the guide groove 1426, a connecting pipe 1472 is fixedly installed on one side of the piston disc 1471, a guide groove 1473 is provided on the outer side of the connecting pipe 1472, a connecting column 1474 is slidably installed inside the connecting tube 1472, a limiting column 1475 is fixedly installed on the outer side of the connecting column 1474, the limiting column 1475 matches the guide groove 1473, and a limiting rod 1476 is fixedly installed on the outer side of the connecting column 1474. When the photoelectric sensor 145 at the upper end of the guide shell 142 detects that the oil seal 2 has completely entered the interior of the guide shell 142, the hydraulic rod 1427 is started at this time to push the piston plate 1428 in the inner part of the slide groove 1430 1426 and the exhaust groove 1431 are in a vacuum state, the gas is squeezed by the piston plate 1428 and pushed into the interior of the guide groove 1426, driving the piston disc 1471 to move forward. Since the piston disc 1471 cannot rotate under the restriction of the guide groove 1426, the connecting pipe 1472 on the side of the piston disc 1471 will push the connecting column 1474 to rotate. At the same time, the limiting rod 1476 on the outside of the connecting column 1474 will synchronously rotate to the vertical guide shell 2 142. When the limiting rod 1476 is preset to be vertical to the guide shell 2 142, when the limiting rod 1476 contacts the inner wall of the oil seal 2, the position of the oil seal 2 is just below the detection ring 1421. After the oil seal 2 enters the guide shell 2 142, Under the rotation of the glass detection plate 11, one end of the oil seal 2 is first lifted by the tapered support rod 1425, and the oil seal 2 is then continuously conveyed. When the oil seal 2 completely enters the guide housing 142, the piston plate 1428 is pushed to move by the hydraulic rod 1427, driving the multiple sets of telescopic rods 1429 to gradually approach the oil seal 2 and gradually squeeze it close to the gear belt 1424. Since the limiting rod 1476 gradually rotates to a vertical state during the squeezing process of the oil seal 2, although the oil seal 2 is continuously conveyed along with the glass detection plate 11, the oil seal 2 cannot be moved when it is moved to the point where the center of the circle is on the same horizontal line as the center of the detection ring 1421. At this time, the oil seal 2 will not change its position due to friction. When the telescopic rod 1429 gradually squeezes the oil seal 2, it gradually moves After the tilted state is squeezed to the horizontal, the oil seal 2 is not affected by the rotation of the glass detection disk 11. At this time, the center of the oil seal 2 is in the same vertical position as the center of the detection ring 1421. The laser detector at the lower end of the detection ring 1421 is used to locate the texture of the oil seal 2, and the gear belt 1424 is driven by the second motor 1423 to rotate the oil seal 2. Since a roller is provided at one end of the telescopic rod 1429, when the gear belt 1424 rotates the oil seal 2, the oil seal 2 rotates immediately, so that its oil seal 2 texture is perpendicular to the center of the glass detection disk 11. After alignment, the hydraulic rod 1427 is started to move in the opposite direction, so that the oil seal 2 is gradually contacted and clamped. At the same time, the limiting rod 1476 is rotated and reset. The oil seal 2 tilts to one side under the action of the support rod 1425.At this time, the rotational force of the glass inspection disk 11 drives the oil seal 2 away from the second guide housing 142. Since the second guide housing 142 is fan-shaped, the oil seal 2 is not squeezed by the inner wall of the second guide housing 142 during the process of separation. After the oil seal 2 is separated from the second guide housing 142, the distance between the oil seal 2 and the edge of the glass inspection disk 11 is also the same, which improves the inspection efficiency of each inspection camera.

[0032] Working principle: When the oil seal 2 is transported to the glass inspection disk 11 via the conveyor belt 12, it is first guided by the guide plate 139 of the drive assembly 13, and the drive motor 133 drives the guide disk 134 to rotate. At the same time, the transmission belt 1331 drives the rotating disk 136 and the gear column 137 to rotate, so that the gear column 137 engages the rack 113 of the glass inspection disk 11, allowing the glass inspection disk 11 and the guide disk 134 to rotate synchronously to prevent the oil seal 2 from being squeezed and offset; then the oil seal 2 enters the guide assembly 14, first passes through the guide shell 141, and the upper end detection sensor 1411 identifies the front and back sides. If it is the back side, the servo motor 143 drives the electric push rod to drive the clamping plate 146 to clamp and flip, and then passes through the guide shell 2 142, and the upper end photoelectric sensor 145 detects that the oil seal 2 is completely After entering, the hydraulic rod 1427 pushes the piston plate 1428 to squeeze the gas in the slide groove 1430 to the guide groove 1426, driving the limiting rod 1476 of the limiting assembly 147 to rotate and vertically position the oil seal 2, and cooperates with the telescopic rod 1429 to squeeze it to the horizontal and align it with the center of the detection ring 1421. After the laser detector locates the texture, the driving motor 2 1423 drives the gear belt 1424 to drive the oil seal 2 to rotate, so that the texture is perpendicular to the center of the glass detection disk 11. After alignment, the hydraulic rod 1427 is reset, and the oil seal 2 is driven by the glass detection disk 11 to separate from the guide shell 2 142, and finally inspected by the front and back defect cameras, thickness detection cameras, etc., the unqualified products are pushed to the waste area by the hydraulic push rod, and the qualified products enter the collection device along the conveyor belt 12 to achieve accurate and efficient detection.

[0033] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A defect detection device for an oil seal sealing surface, characterized in that: The visual inspection platform (1) comprises a glass inspection plate (11), a conveyor belt (12) is provided on the outside of the glass inspection plate (11), an oil seal (2) is provided on the upper end of the conveyor belt (12), a driving component (13) is provided at the connection between the conveyor belt (12) and the glass inspection plate (11), and a guide component (14) is installed on one side of the driving component (13); The guide assembly (14) includes a guide shell 1 (141) and a guide shell 2 (142), a detection ring (1421) is installed inside the guide shell 2 (142), a placement groove (1422) is provided inside one side of the guide shell 2 (142), a drive motor 2 (1423) is provided inside the placement groove (1422), a gear belt (1424) is meshed with the outer side of the drive motor 2 (1423), the gear belt (1424) is rotatably connected to the guide shell 2 (142), a support rod (1425) is fixedly installed at the lower end of the inner part of the guide shell 2 (142), and a slide groove (1430) and an exhaust groove (1431) are provided inside the other side of the guide shell 2 (142). A hydraulic rod (1427) is fixedly installed on the outer side of the guide shell 2 (142), and the driving end of the hydraulic rod (1427) passes through the guide shell 2 (142) and is fixedly installed with a piston plate (1428), and the piston plate (1428) matches the slide groove (1430). One side of the piston plate (1428) is fixedly installed with multiple groups of telescopic rods (1429), and one end of the telescopic rod (1429) is provided with multiple groups of rollers. A guide groove (1426) is opened inside the upper end of the guide shell 2 (142), and the guide groove (1426) is connected with the exhaust groove (1431) and the slide groove (1430), and a limiting component (147) is provided inside the guide groove (1426).

2. The oil seal surface defect detection device according to claim 1, characterized in that: A circular hole (111) is provided at the center of the glass detection disk (11), a fixed disk (112) is provided at the lower end of the glass detection disk (11), a support column (114) is rotatably mounted at the lower end of the fixed disk (112), and a circle of gear rails (113) is provided on the inner edge of the circular hole (111).

3. The oil seal surface defect detection device according to claim 2, characterized in that: The rack (113) is engaged with the drive assembly (13).

4. The oil seal surface defect detection device according to claim 3, characterized in that: The driving assembly (13) includes a connecting rod (131), a connecting shell (132) is fixedly mounted on the upper end of the connecting rod (131), a driving motor (133) is fixedly mounted inside the connecting shell (132), and a driving end of the driving motor (133) passes through the connecting rod (131) and is fixedly mounted with a guide plate (134).

5. The oil seal surface defect detection device according to claim 4, characterized in that: A transmission belt (1331) is provided on the outer side of the driving end of the driving motor (133), a rotating disk (136) is provided on the inner side of one end of the transmission belt (1331), a connecting plate (135) is rotatably mounted on the lower end of the rotating disk (136), the connecting plate (135) is fixedly connected to the connecting rod (131), the lower end of the rotating disk (136) passes through the connecting plate (135) and is fixedly mounted with a gear column (137), and the gear column (137) is meshed with the rack (113).

6. The oil seal surface defect detection device according to claim 5, characterized in that: A guide plate (139) is installed at the lower end of the connecting rod (131) corresponding to the conveyor belt (12).

7. The oil seal surface defect detection device according to claim 6, characterized in that: The connecting rod (131) and the guide assembly (14) are fixed via a fixing rod (138).

8. The oil seal surface defect detection device according to claim 1, characterized in that: Two groups of fixed plates (144) are provided between the guide shell 1 (141) and the guide shell 2 (142), and servo motors (143) are provided on the outside of the two groups of fixed plates (144). The driving end of the servo motor (143) is fixedly installed with an electric telescopic rod (1429), and the driving end of the electric telescopic rod (1429) is fixedly installed with a clamping plate (146), and the clamping plate (146) is attached to the inner side of the fixed plate (144). The upper end of the guide shell 1 (141) is installed with a detection sensor (1411).

9. The oil seal surface defect detection device according to claim 8, characterized in that: A photoelectric sensor (145) is fixedly mounted on the upper end of the second guide shell (142).

10. The oil seal surface defect detection device according to claim 1, characterized in that: The limiting assembly (147) includes a piston disc (1471), the piston disc (1471) matches the guide groove (1426), a connecting pipe (1472) is fixedly installed on one side of the piston disc (1471), a guide groove (1473) is provided on the outer side of the connecting pipe (1472), a connecting column (1474) is slidably installed inside the connecting pipe (1472), a limiting column (1475) is fixedly installed on the outer side of the connecting column (1474), the limiting column (1475) matches the guide groove (1473), and a limiting rod (1476) is fixedly installed on the outer side of the connecting column (1474).

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