Sealing ring detection device and detection method based on visual detection

Abstract

The application relates to the technical field of sealing ring detection, in particular to a sealing ring detection device and method based on visual detection, which comprises a base and a disc rotatingly installed on the base, the disc is provided with annular light transmission glass to form an annular transparent area for bearing the sealing ring; further comprising: a detection station arranged on the side of the base, two cameras are arranged on the detection station, the two cameras are respectively located above and below the light transmission glass, and are used for shooting the sealing ring in the annular transparent area and located on the detection station; by arranging a disc with an annular transparent area as a bearing body of the sealing ring, the rotation of the disc makes the sealing ring pass through the detection station one by one, when the sealing ring is located on the detection station, the opposite moving mechanism can make the sealing ring deform and drive the sealing ring to run, the crack on the sealing ring can be more obviously exposed due to the elastic deformation, so that the crack is obviously shown in the image, and the accuracy of computer recognition is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing ring detection, in particular to a sealing ring detection device and method based on visual detection. BACKGROUND

[0002] A sealing ring is a key component widely used in mechanical equipment, pipeline connection and other fields, mainly used to prevent the leakage of liquid or gas and ensure the sealing and safety of the system. Due to the complex working environment, the quality of the sealing ring is directly related to the operating efficiency and safety of the equipment.

[0003] In actual production process, the sealing ring may have cracks due to material defects, improper processing technology or external force, etc. If these cracks are not discovered in time, they may lead to sealing failure and even cause equipment failure or safety accidents. Therefore, special detection equipment is usually provided on the production line of the sealing ring to ensure product quality.

[0004] At present, the common detection method is to take pictures and analyze the surface of the sealing ring by combining a camera with visual detection technology. This method has the advantages of non-contact and high efficiency, and has been widely used in industrial production. However, the existing detection method still has certain limitations: when the sealing ring reaches the detection position of the camera, it is usually in a natural state. Since the sealing ring itself has elasticity, there is a certain elastic shrinkage force inside it. This force may make the crack difficult to open in the natural state, resulting in that the crack is not obvious in the image, thereby affecting the recognition accuracy of the computer and making it difficult to ensure the accuracy of the detection result. SUMMARY

[0005] The purpose of the present application is to provide a sealing ring detection device and method based on visual detection to solve the problems raised in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] The sealing ring detection device based on visual detection comprises a base and a disc rotatingly installed on the base, and a ring-shaped light-transmitting glass is arranged on the disc to form an annular transparent area for carrying the sealing ring.

[0008] The sealing ring detection device based on visual detection further comprises:

[0009] A detection station is arranged on the side of the base, and two cameras are arranged on the detection station, which are located above and below the light-transmitting glass respectively, and are used for taking pictures of the sealing ring in the annular transparent area and located on the detection station.

[0010] The opposite moving mechanism arranged on the detection station can apply pressure to the sealing ring between the two cameras, promote the deformation of the sealing ring, and drive the sealing ring to operate in place.

[0011] As a further scheme of the present application, the detection station is fixed with a first mounting frame, the opposite moving mechanism comprises two driving discs movably arranged on the first mounting frame and located at the upper part of the disc, the two driving discs can synchronously and uniformly rotate, and the extension line of the center line of the two driving discs passes through the center of the disc; the first mounting frame is provided with two groups of displacement components connecting the two driving discs, the lower part of the movable seat is provided with a first motor, and the driving disc is fixedly installed at the end of the output shaft of the first motor;

[0012] The driving disc is provided with a plurality of first arc-shaped blocks and second arc-shaped blocks which are equidistantly and staggeredly distributed along the circumference, the plurality of first arc-shaped blocks and the plurality of second arc-shaped blocks can move along the radial direction of the driving disc to perform expansion or contraction action, and when in the expansion state, an annular structure with an outer diameter larger than that of the driving disc is formed.

[0013] As a further scheme of the present application, the displacement component comprises a slide way fixedly installed on the first mounting frame and two sliding gaskets symmetrically and slidably embedded in the slide way, the sliding gaskets are fixedly connected with movable seats, the driving disc is arranged below the movable seats, the first mounting frame is further hingedly connected with a gas cylinder, and the movable end of the gas cylinder is hingedly connected with the movable seat.

[0014] A plurality of guide grooves are equidistantly arranged on the driving disc along the circumference, the guide grooves are arranged along the radial direction of the driving disc, a guide block is slidably embedded in each guide groove, a vertical plate is fixed on each guide block, the first arc-shaped block is slidably connected with the vertical plate, and the second arc-shaped block is fixed with the vertical plate, and the bottom of the movable seat is further provided with a power component connected with the vertical plate.

[0015] As a further scheme of the present application, the power component comprises an electric push rod fixed to the bottom of the movable seat and a connecting plate fixed to the movable end of the electric push rod, the connecting plate is rotatably connected with a sliding sleeve slidably arranged on the output shaft, a sliding fitting part is arranged between the sliding sleeve and the vertical plate, and an extension arm group is arranged between the first arc-shaped block and the sliding fitting part.

[0016] The sliding fitting part comprises a transmission plate fixed with the vertical plate and two supporting arms fixed with the sliding sleeve, a column body is fixed between the two supporting arms, the column body penetrates through a through slot on the transmission plate and is in sliding connection with the transmission plate, the through slot comprises a vertical segment and an inclined segment connected with each other, when the column body enters the inclined segment from the vertical segment, the vertical plate can be caused to move close to the output shaft, and the telescopic arm group comprises a guide arm fixed with the sliding sleeve and a second follower arm fixed with the first arc-shaped block and in sliding sleeve fitting with the guide arm.

[0017] As a further scheme of the present application, the side of the base is further provided with a cleaning station, a second mounting frame is fixed on the cleaning station, and a cleaning mechanism is arranged on the second mounting frame.

[0018] An assembly plate is rotatably arranged on the second mounting frame, and two brush rollers are movably arranged on the assembly plate and located on the upper and lower portions of the annular transparent area respectively, and the brush rollers are connected with elastic trigger structures arranged on the assembly plate.

[0019] A third motor is arranged on the second mounting frame, and an output end of the third motor is connected with a rotating shaft of the assembly plate, when the third motor drives the assembly plate to rotate and causes the brush rollers to be separated from the disc, the elastic trigger structures are moved, the two brush rollers are moved away from each other, and two sets of combing assemblies arranged on the assembly plate are contacted respectively.

[0020] As a further scheme of the present application, a sliding groove is arranged on the assembly plate, an assembly seat is slidably arranged in the sliding groove, the brush rollers are rotatably arranged on the assembly seat, and a second motor is further arranged on the side of the assembly seat away from the brush rollers, and an output end of the second motor is connected with rotating shafts of the brush rollers.

[0021] The assembly seat is connected with the elastic trigger structures.

[0022] As a further scheme of the present application, the combing assembly comprises an arc-shaped plate fixedly arranged on the assembly plate, and a plurality of comb teeth are arranged on the inner wall of the arc-shaped plate.

[0023] As a further scheme of the present application, the elastic trigger structure comprises a stand column fixed on the side of the assembly plate through a protruding block and a connecting block slidably arranged on the stand column and fixed with the assembly seat, a spring is sleeved on the outer periphery of the stand column, and two ends of the spring are connected with the protruding block and the connecting block respectively.

[0024] The assembly seat is fixedly connected with a first follower arm, a ball is arranged on the end of the first follower arm away from the assembly seat, and the ball is in abutment with an arc-shaped limiting piece fixed on the second mounting frame.

[0025] As a further scheme of the present application: the arc-shaped limiting piece is concentric with the rotating shaft of the assembly plate, and a first plane and a second plane with height difference are formed on the side of the arc-shaped limiting piece facing the ball, the first plane and the second plane are smoothly connected through a slope, and in the process that the brush roller is separated from the disc, the ball rolls along the first plane and the second plane in turn, and drives the assembly seat to drive the brush roller to move towards the arc-shaped plate.

[0026] The method for detecting the sealing ring by using the sealing ring detection device based on visual detection comprises the following steps:

[0027] Step one: the sealing ring is conveyed to the annular transparent area at the feeding station;

[0028] Step two: the disc rotates, and the sealing ring reaches the detection station;

[0029] Step three: the plurality of first arc-shaped blocks and second arc-shaped blocks are in the expanded state, and the two driving discs simultaneously move towards the sealing ring and contact the sealing ring to make the sealing ring deform;

[0030] Step four: the plurality of first arc-shaped blocks and second arc-shaped blocks are switched to the contracted state, and the two driving discs are synchronously and uniformly rotated to make the sealing ring keep the deformed state and run in situ, and the sealing ring is imaged by the two cameras;

[0031] Step five: the images imaged by the cameras are separated to obtain the detection result.

[0032] Compared with the prior art, the present application has the following advantages:

[0033] The present application sets a disc with an annular transparent area as a carrier of the sealing ring, utilizes the rotation of the disc to make the sealing ring pass through the detection station one by one, and when the sealing ring is located at the detection station, the opposite moving mechanism can make the sealing ring deform and drive the sealing ring to run;

[0034] Specifically, the two driving discs move towards the sealing ring to make the sealing ring deform, and then are synchronously and uniformly rotated, so that the sealing ring runs in situ under the action of the pressure, and in this process, the cracks on the sealing ring can be more obviously exposed due to elastic deformation and are imaged by the cameras, compared with the means of imaging and detecting the sealing ring in a natural state, the present application can effectively break the elastic shrinkage force of the sealing ring during detection, promote the opening of the cracks, make the cracks obviously appear in the image, and help the accuracy of computer recognition, and the opposite moving mechanism can also drive the sealing ring to run, so that the cracks on the circumferential direction of the sealing ring can be exposed, and the comprehensiveness of detection is ensured.

[0035] Secondly, a plurality of ring body structures capable of expanding to form an outer diameter greater than the driving disc are arranged on the driving disc, and the driving disc applies pressure to the sealing ring, so that when the sealing ring deforms, the ring body structure is located on the upper surface of the sealing ring. Therefore, during the process of the driving disc starting to apply pressure to the sealing ring to deform the sealing ring, the ring body structure can effectively limit the sealing ring in the vertical direction, avoiding the phenomenon of bulging of the sealing ring during deformation, irregular deformation, and further problems of the sealing ring unable to rotate in place when the two driving discs rotate synchronously and in the same direction, providing a guarantee for the smoothness of detection.

[0036] In addition, by setting the cleaning station, the rotation of the two brush rollers is used to clean the light transmission glass in real time, avoiding the misjudgment of the detection result and affecting the image analysis process caused by dust, thereby providing effective guarantee for the accurate detection of the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A perspective view of an embodiment of the sealing ring detection device based on visual detection.

[0038] Figure 2 A structural schematic view of an embodiment of the sealing ring detection device based on visual detection.

[0039] Figure 3 A structural schematic view of an embodiment of the sealing ring detection device based on visual detection from another angle.

[0040] Figure 4 A structural schematic view of an embodiment of the sealing ring detection device based on visual detection from another angle.

[0041] Figure 5 A front view of an embodiment of the sealing ring detection device based on visual detection.

[0042] Figure 6 A structural schematic view of the facing movement mechanism in an embodiment of the sealing ring detection device based on visual detection.

[0043] Figure 7 A structural schematic view of the facing movement mechanism in an embodiment of the sealing ring detection device based on visual detection from another angle.

[0044] Figure 8 A structural schematic view of the cleaning mechanism in an embodiment of the sealing ring detection device based on visual detection.

[0045] Figure 9 A structural schematic view of the cleaning mechanism in an embodiment of the sealing ring detection device based on visual detection. Figure 8 An enlarged view of the structure at A in the middle.

[0046] Figure 10A schematic view of a guide mechanism in an embodiment of the sealing ring detection device based on visual detection.

[0047] Figure 11 A schematic view of a state change of the sealing ring during detection in an embodiment of the sealing ring detection device based on visual detection.

[0048] Figure 12 A schematic view of the expansion state of the plurality of first and second arc-shaped blocks in an embodiment of the sealing ring detection device based on visual detection.

[0049] Figure 13 An exploded view of the structure of the power assembly in an embodiment of the sealing ring detection device based on visual detection.

[0050] In the figure: 1, base; 2, disc; 201, light-transmitting glass; 3, first mounting frame; 4, camera; 5, driving disc; 501, guide block; 6, first motor; 601, output shaft; 7, slide; 8, sliding gasket; 9, movable seat; 10, air cylinder; 11, second mounting frame; 12, assembly plate; 1201, sliding groove; 13, brush roller; 14, arc-shaped plate; 15, second motor; 17, protruding block; 18, stand column; 19, connecting block; 20, spring; 21, assembly seat; 2101, first follower arm; 2102, ball; 22, arc-shaped limiting member; 2201, first plane; 2202, second plane; 23, third mounting frame; 24, guide rail; 25, sliding block; 26, guide; 2601, inclined portion; 2602, arc-shaped portion; 27, third motor; 28, electric push rod; 29, connecting plate; 30, sliding sleeve; 3001, guide arm; 3002, branch arm; 3003, column body; 31, first arc-shaped block; 3101, second follower arm; 32, second arc-shaped block; 33, transmission plate; 3301, vertical section; 3302, inclined section; 34, stand plate. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0052] In addition, elements in the present application can be referred to or described as "fixed" or "set up" on another element, which can be directly on the other element or can exist with a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or can exist with a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0053] Please refer to Figures 1-13 In the embodiment of the present application, the sealing ring detection device based on visual detection includes a base 1 and a disc 2 rotatably installed on the base 1, and the disc 2 is provided with a ring-shaped light-transmitting glass 201 to form a ring-shaped transparent area for carrying the sealing ring.

[0054] The sealing ring detection device based on visual detection further includes:

[0055] A detection station is arranged on the side of the base 1, and two cameras 4 are arranged on the detection station, which are located above and below the light-transmitting glass 201 respectively, and are used for photographing the sealing ring in the ring-shaped transparent area and located on the detection station.

[0056] A facing moving mechanism is arranged on the detection station, which can apply pressure to the sealing ring between the two cameras 4, promote the deformation of the sealing ring, and drive the sealing ring to run in place.

[0057] It should be noted that in actual operation, in order to realize automatic detection, the device will also be equipped with an upper feeding station and a lower feeding station, both of which can adopt a rotating disc type. Specifically, the upper feeding station is used to feed the sealing ring to be detected to the ring-shaped transparent area, so that the sealing rings are distributed equidistantly along the circumference of the ring-shaped transparent area. The lower feeding station is used to transfer the sealing ring that has completed detection from the ring-shaped transparent area. Specifically, the lower feeding station can classify the qualified products and unqualified products according to the detection results. The upper feeding station and the lower feeding station can adopt mature existing technologies, and therefore, the present application will not be described in detail.

[0058] In operation, the disc 2 rotates intermittently. When a sealing ring reaches between the two cameras 4, the disc 2 stops, and the facing moving mechanism works to apply force to the sealing ring, so that the sealing ring deforms. Then, the facing moving mechanism drives the sealing ring to run by using friction. The two cameras 4 photograph the sealing ring from above and below respectively, and send the photographing results to a computer for analysis.

[0059] The application sets a disc 2 with a ring-shaped transparent area as a bearing body of the sealing ring, utilizes rotation of the disc 2 to make the sealing ring pass through the detection station one by one, and when the sealing ring is located at the detection station, the facing moving mechanism can make the sealing ring deform and drive the sealing ring to run, so that the crack on the sealing ring can be more obviously exposed due to the elastic deformation of the sealing ring during the running process and be shot by the camera 4, compared with the means of shooting and detecting the sealing ring in the natural state, the application can effectively break the elastic shrinkage force of the sealing ring during detection, promote the opening of the crack, make the crack obviously appear in the image, help the accuracy of computer recognition, and the facing moving mechanism can also drive the sealing ring to run, so that the cracks on the circumference of the sealing ring can be exposed, and the comprehensiveness of detection is ensured.

[0060] Please refer again to Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 12 , the detection station is fixed with a first mounting frame 3, the facing moving mechanism includes two drive discs 5 movably arranged on the first mounting frame 3 and located at the upper part of the disc 2, the two drive discs 5 can synchronously and identically rotate, and the extension line of the center line of the two drive discs 5 passes through the center of the disc 2; the first mounting frame 3 is provided with two groups of displacement assemblies connecting the two drive discs 5, the lower part of the movable seat 9 is provided with a first motor 6, and the drive disc 5 is fixedly installed at the end of the output shaft 601 of the first motor 6.

[0061] Among them, the drive disc 5 is provided with a plurality of first arc-shaped blocks 31 and second arc-shaped blocks 32 distributed equidistantly and staggered along the circumference, a plurality of first arc-shaped blocks 31 and a plurality of second arc-shaped blocks 32 can move along the radial direction of the drive disc 5 to perform expansion or contraction action, and when in the expanded state, an annular structure with an outer diameter larger than that of the drive disc 5 is formed.

[0062] It should be pointed out that the extension line of the center line of the two drive discs 5 passes through the center of the disc 2, the purpose of such arrangement is that when the sealing ring reaches the detection station, the two drive discs 5 approach each other, the directions of the forces applied by the two drive discs 5 to the sealing ring are opposite and collinear, so that the sealing ring can smoothly deform, avoiding the problem that the sealing ring cannot effectively deform due to the misalignment of the forces applied by the two drive discs 5 to the sealing ring.

[0063] The shifting assembly comprises a slide 7 fixedly installed on the first mounting frame 3 and two sliding pads 8 symmetrically slidingly fitted in the slide 7, and the sliding pads 8 are fixedly connected with a movable seat 9, the driving disc 5 is arranged below the movable seat 9, and the first mounting frame 3 is further hingedly connected with a pneumatic cylinder 10, and the movable end of the pneumatic cylinder 10 is hingedly connected with the movable seat 9.

[0064] A plurality of guide grooves are equidistantly arranged on the driving disc 5 in a circumferential direction, the guide grooves are arranged along the radial direction of the driving disc 5, and one guide block 501 is slidingly fitted in each guide groove, a vertical plate 34 is fixed on each guide block 501, the first arc-shaped block 31 is slidingly connected with the vertical plate 34, the second arc-shaped block 32 is fixed with the vertical plate 34, and the bottom of the movable seat 9 is further provided with a power assembly connected with the vertical plate 34.

[0065] In one embodiment, four guide grooves are equidistantly arranged on the driving disc 5 in a circumferential direction, and correspondingly, four guide blocks 501 are arranged and slidingly arranged in the four guide grooves, and one vertical plate 34 is fixed on each guide block 501.

[0066] Please refer to Figure 12 The power assembly comprises an electric push rod 28 fixed on the bottom of the movable seat 9 and a connecting plate 29 fixed on the movable end of the electric push rod 28, the connecting plate 29 is rotationally connected with a sliding sleeve 30 slidingly arranged on the output shaft 601, and a sliding fitting part is arranged between the sliding sleeve 30 and the vertical plate 34, and an extension arm group is arranged between the sliding fitting part and the first arc-shaped block 31.

[0067] In one embodiment (corresponding to the number of guide grooves in the above embodiment), the sliding fitting part is provided with four groups, each group of the sliding fitting part comprises a transmission plate 33 fixed with the vertical plate 34 and two branch arms 3002 fixed with the sliding sleeve 30, a column body 3003 is fixed between the two branch arms 3002, the column body 3003 is arranged in a through groove in the transmission plate 33 in a penetrating manner and is slidingly connected with the transmission plate 33, the through groove comprises a vertical segment 3301 and an inclined segment 3302 connected with each other, when the column body 3003 enters the inclined segment 3302 from the vertical segment 3301, the vertical plate 34 is caused to move close to the output shaft 601, and the extension arm group comprises a guide arm 3001 fixed with the sliding sleeve 30 and a second follower arm 3101 fixed with the first arc-shaped block 31 and slidingly fitted with the guide arm 3001.

[0068] Specifically, when the sealing ring reaches the inspection station, that is, when the sealing ring is between the two cameras 4, and at this time the two drive disks 5 are respectively located on both sides of the sealing ring, the movable end of the cylinder 10 extends. Under the guidance of the slide 7 and the sliding pad 8, the movable end of the cylinder 10 pushes the movable seat 9 to move. Specifically, the two movable seats 9 on the first mounting bracket 3 move closer to each other, and the two drive disks 5 move closer to the sealing ring at the same time. Finally, the two drive disks 5 apply pressure to the sealing ring, so that the sealing ring no longer maintains its natural circular state. Subsequently, the first motor 6 works, driving the drive disks 5 to rotate. It should be noted that the two drive disks 5 rotate synchronously and in the same direction. Thus, the sealing ring located between the two drive disks 5 can operate in place. Under the pressure of the drive disks 5, any cracks that may exist on the sealing ring can be clearly exposed, ensuring the effectiveness and comprehensiveness of the inspection.

[0069] Furthermore, with attachment Figure 12 Taking the state shown as an example, at this time, the ring structure formed by multiple first arc blocks 31 and multiple second arc blocks 32 is in an expanded state. After the two drive disks 5 approach each other, the edge of the drive disk 5 contacts the sealing ring, while the ring structure is located on the upper surface of the sealing ring. Therefore, when the drive disk 5 starts to apply pressure to the sealing ring to deform it, the ring structure can effectively limit the sealing ring in the vertical direction, avoiding the phenomenon of bulging when the sealing ring is deformed, and the problem of irregular deformation that makes it difficult to perform detection effectively.

[0070] After the sealing ring has deformed, the electric push rod 28 drives the sliding sleeve 30 to slide upward on the output shaft 601 via the connecting plate 29. Correspondingly, the column 3003 slides along the vertical section 3301 toward the inclined section 3302. The sliding sleeve 30 drives the first arc-shaped block 31 to slide upward on the vertical plate 34 via the guide arm 3001 and the second follower arm 3101 until the first arc-shaped block 31 moves above the second arc-shaped block 32. Then, the column 3003 enters the inclined section 3302 and connects with the transmission... The movable plate 33 slides together, causing the transmission plate 33 and the upright plate 34 to gradually move toward the output shaft 601. As a result, the first arc block 31 and the second arc block 32 move closer to the output shaft 601, causing the annular structure to switch from an expanded state to a contracted state. Specifically, after the multiple first arc blocks 31 and multiple second arc blocks 32 have completed their contraction, there is no obstruction problem for the camera 4 above the disk 2, ensuring that the camera 4 can perform comprehensive image acquisition and detection of the sealing ring.

[0071] Please refer to it again. Figure 10After the sealing ring is released, before passing through the inspection station, it passes through a guide mechanism located on the base 1. The guide mechanism includes a third mounting bracket 23 fixed on the base 1, a guide rail 24 fixed on the third mounting bracket 23, and two sliders 25 slidably fitted on the guide rail 24. Each slider 25 is fixedly connected to a guide member 26. The guide member 26 includes a connected inclined portion 2601 and an arc-shaped portion 2602. The arc-shaped portion 2602 is concentric with the disc 2, and a gap is reserved between the two arc-shaped portions 2602 to form a limiting channel. The sealing ring is released into the annular transparent area. After the disk 2 rotates, the sealing ring will first pass through the inclined part 2601. Under the guidance of the inclined part 2601, the sealing ring will enter the limiting channel. It should be noted that the limiting channel is used to regulate the position of the sealing ring, ensuring that after the sealing ring reaches the detection station, the sealing ring is located at the midpoint of the line connecting the centers of the two drive disks 5. In this way, when the two drive disks 5 move towards the sealing ring synchronously, they can contact the sealing ring at the same time, avoiding one drive disk 5 from contacting the sealing ring in advance and causing the sealing ring to shift, which would make it difficult for the sealing ring to deform smoothly and operate in place.

[0072] It should also be noted that the distance between the two sliders 25 can be adjusted by a two-way lead screw. In practical applications, the guide 26 can be replaced and the positions of the two sliders 25 can be adjusted according to the different specifications of the sealing rings in different production batches, so as to ensure that the sealing rings can accurately reach the inspection station for accurate inspection.

[0073] Please refer to it again. Figure 3 , Figure 8 as well as Figure 9 The base 1 also has a cleaning station on its side, located between the loading station and the unloading station. A second mounting bracket 11 is fixed to the cleaning station, and a cleaning mechanism is provided on the second mounting bracket 11. The cleaning mechanism includes:

[0074] The assembly plate 12 is rotatably mounted on the second mounting bracket 11 and two brush rollers 13 are movably disposed on the assembly plate 12 and respectively located at the upper and lower parts of the annular transparent area. The brush rollers 13 are connected to the elastic triggering structure provided on the assembly plate 12.

[0075] The third motor 27 is mounted on the second mounting bracket 11 and its output end is connected to the rotating shaft of the assembly plate 12. When the third motor 27 drives the assembly plate 12 to rotate, causing the brush roller 13 to disengage from the disc 2, the elastic trigger structure moves, and the two brush rollers 13 move away from each other and respectively contact the two combing components set on the assembly plate 12.

[0076] Further, the assembling plate 12 is provided with a sliding groove 1201, and an assembling base 21 is slidingly embedded in the sliding groove 1201, the brush roller 13 is rotatably installed on the assembling base 21, and a second motor 15 connected to a rotating shaft of the brush roller 13 is further installed on a side of the assembling base 21 away from the brush roller 13; the assembling base 21 is connected to the elastic trigger structure. The carding assembly comprises an arc-shaped plate 14 fixedly installed on the assembling plate 12, and a plurality of card teeth are arranged on an inner wall of the arc-shaped plate 14.

[0077] Further, during long-term operation of the device, dust is inevitably accumulated on the disc 2, and then the dust is captured in image acquisition by the camera 4, and the presence of the dust also causes the dust to adhere to the sealing ring, and then the dust easily causes misjudgment of the detection result during detection.

[0078] To this end, during work, the bristles on the two brush rollers 13 respectively contact upper and lower surfaces of the annular transparent area, the second motor 15 drives the brush roller 13 to rotate, so that the brush roller 13 can realize effective cleaning of the light-transmitting glass 201, ensure the cleanliness of the light-transmitting glass 201, and avoid the influence of accumulated dust on the judgment of the detection result.

[0079] Please refer to Figure 9 again, the elastic trigger structure comprises a stand column 18 fixed to a side of the assembling plate 12 through a protruding block 17, a connecting block 19 slidingly arranged on the stand column 18 and fixed to the assembling base 21, a spring 20 sleeved on an outer periphery of the stand column 18, and two ends of the spring 20 are respectively connected to the protruding block 17 and the connecting block 19; the assembling base 21 is fixedly connected with a first follow-up arm 2101, an end of the first follow-up arm 2101 away from the assembling base 21 is provided with a ball 2102, and the ball 2102 abuts against an arc-shaped limiting piece 22 fixed to the second mounting frame 11. The arc-shaped limiting piece 22 is concentric with a rotating shaft of the assembling plate 12, and a side of the arc-shaped limiting piece 22 facing the ball 2102 is formed with a first plane 2201 and a second plane 2202 having a height difference, the first plane 2201 and the second plane 2202 are smoothly connected through an inclined surface, and during disengagement of the brush roller 13 from the disc 2, the ball 2102 rolls along the first plane 2201 and the second plane 2202 in sequence, and drives the assembling base 21 to drive the brush roller 13 to move towards the arc-shaped plate 14.

[0080] Specifically, as the running time of the device increases, the dust accumulated on the brush roller 13 increases, which reduces the cleaning effect of the brush roller 13 on the transparent glass 201, and the bristles on the brush roller 13 become disordered, and some of the bristles may be entangled and knotted, resulting in uneven contact with the surface of the transparent glass 201 and causing cleaning dead angles;

[0081] To this end, the third motor 27 drives the assembly plate 12 to rotate, so that the brush roller 13 is separated from the disc 2, and in this process, the first follower arm 2101 is deflected together, and the ball 2102 is rolled from the first plane 2201 to the second plane 2202, and since there is a height difference between the first plane 2201 and the second plane 2202, the ball 2102 is attached to the first plane 2201 and the second plane 2202. Figure 9 As an example, the first plane 2201 is lower than the second plane 2202, and then, after the deflection of the brush roller 13 ends, the height of the brush roller 13 changes, specifically, when the ball 2102 passes through the transition slope between the first plane 2201 and the second plane 2202, the first follower arm 2101 is caused to move upward with the assembly seat 21, and correspondingly, the brush roller 13 is close to the arc-shaped plate 14, and then, the brush roller 13 rotates, and the comb teeth on the inner wall of the arc-shaped plate 14 can effectively comb the bristles on the brush roller 13, restoring the cleaning ability of the brush roller 13 on the transparent glass 201, and also removing the dust accumulated on the brush roller 13.

[0082] As another embodiment of the present application, a method for detecting a sealing ring by using the sealing ring detection device based on visual detection is also provided, which comprises the following steps:

[0083] Step one, the sealing ring is conveyed to the annular transparent area at the feeding station;

[0084] Step two, the disc 2 rotates, and the sealing ring reaches the detection station;

[0085] Step three, the plurality of first arc-shaped blocks and second arc-shaped blocks are in an expanded state, and the two driving discs 5 simultaneously move towards the sealing ring and contact the sealing ring to cause the sealing ring to deform;

[0086] Step four, the plurality of first arc-shaped blocks and second arc-shaped blocks are switched to a contracted state, and the two driving discs 5 are synchronously and synchronously rotated to make the sealing ring keep the deformed state and run in place, and the two cameras 4 collect images of the sealing ring;

[0087] Step five, the images collected by the cameras 4 are separated to obtain a detection result.

[0088] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0089] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A sealing ring detection device based on visual detection, comprising a base and a disc rotatably mounted on the base, the disc being provided with a ring-shaped light-transmitting glass to form an annular transparent area for carrying the sealing ring; characterized in that Further comprising: a detection station arranged on the side of the base, the detection station being provided with two cameras, the two cameras being respectively located above and below the light-transmitting glass, and being used for shooting the sealing ring located in the annular transparent area and at the detection station; a facing moving mechanism arranged on the detection station, the facing moving mechanism being capable of exerting pressure on the sealing ring located between the two cameras, promoting the deformation of the sealing ring, and driving the sealing ring to operate in situ; the detection station is fixed with a first mounting frame, the facing moving mechanism comprises two drive discs movably arranged on the first mounting frame and located at the upper portion of the disc, the two drive discs are capable of synchronous and same-direction rotation, and the extension line of the center line of the two drive discs passes through the center of the disc; the first mounting frame is provided with two groups of displacement assemblies connecting the two drive discs; the displacement assembly comprises a slide fixedly mounted on the first mounting frame and two sliding gaskets symmetrically and slidingly fitted in the slide, and the sliding gaskets are fixedly connected with movable seats, the lower portion of the movable seat is provided with a first motor, and the drive disc is fixedly mounted on the output shaft of the first motor; wherein, a plurality of first arc-shaped blocks and second arc-shaped blocks are equidistantly and staggeredly distributed along the circumference of the drive disc, the plurality of first arc-shaped blocks and the plurality of second arc-shaped blocks are movable along the radial direction of the drive disc to perform expansion or contraction action, and when in the expanded state, an annular structure with an outer diameter larger than that of the drive disc is formed, and the annular structure is located on the upper surface of the sealing ring.

2. The seal inspection apparatus based on visual inspection according to claim 1, wherein the drive disc is arranged below the movable seat, and the first mounting frame is further hingedly connected with a gas cylinder, and the movable end of the gas cylinder is hingedly connected with the movable seat; a plurality of guide grooves are equidistantly arranged along the circumference of the drive disc, the guide grooves are arranged along the radial direction of the drive disc, and a guide block is slidingly fitted in each guide groove, a vertical plate is fixed on each guide block, the first arc-shaped block is slidingly connected with the vertical plate, and the second arc-shaped block is fixed with the vertical plate, and the bottom of the movable seat is further provided with a power assembly connected with the vertical plate.

3. The visual inspection-based seal ring inspection apparatus according to claim 2, characterized by, the power assembly comprises an electric push rod fixed to the bottom of the movable seat and a connecting plate fixed to the movable end of the electric push rod, the connecting plate is rotatably connected with a sliding sleeve slidingly arranged on the output shaft, a sliding fitting member is arranged between the sliding sleeve and the vertical plate, and an extension arm group is arranged between the sliding fitting member and the first arc-shaped block; the sliding fitting member comprises a transmission plate fixed with the vertical plate and two supporting arms fixed with the sliding sleeve, a column is fixed between the two supporting arms, the column penetrates through a through groove arranged on the transmission plate and is slidingly connected with the transmission plate, the through groove comprises a vertical segment and an inclined segment connected with each other, and when the column enters the inclined segment from the vertical segment, the vertical plate is driven to move close to the output shaft, and the extension arm group comprises a guide arm fixed with the sliding sleeve and a second follower arm fixed with the first arc-shaped block and slidingly fitted with the guide arm.

4. The visual inspection-based seal ring inspection apparatus according to claim 1, characterized by, The side of the base is also provided with a cleaning station, a second mounting frame is fixed on the cleaning station, a cleaning mechanism is arranged on the second mounting frame, and the cleaning mechanism comprises: an assembly plate rotatably arranged on the second mounting frame, and two brush rollers movably arranged on the assembly plate and located at upper and lower portions of the annular transparent area respectively, the brush rollers are connected with elastic trigger structures arranged on the assembly plate; a third motor is arranged on the second mounting frame, and an output end of the third motor is connected with a rotating shaft of the assembly plate, when the third motor drives the assembly plate to rotate and the brush rollers are separated from the disc, the elastic trigger structures are moved, the two brush rollers are moved away from each other, and the two brush rollers contact two sets of carding assemblies arranged on the assembly plate respectively.

5. The visual inspection-based seal ring inspection apparatus according to claim 4, characterized by, The assembly plate is provided with a sliding groove, an assembly seat is slidably arranged in the sliding groove, the brush rollers are rotatably arranged on the assembly seat, and a second motor whose output end is connected with rotating shafts of the brush rollers is further arranged on a side of the assembly seat away from the brush rollers. The assembly seat is connected with the elastic trigger structures.

6. The visual inspection-based seal ring inspection apparatus according to claim 5, wherein The carding assembly comprises an arc-shaped plate fixedly arranged on the assembly plate, and a plurality of comb teeth are arranged on an inner wall of the arc-shaped plate.

7. The visual inspection-based seal ring inspection apparatus according to claim 6, characterized by, The elastic trigger structure comprises a stand fixed to a side of the assembly plate through a protruding block, and a connecting block slidably arranged on the stand and fixed with the assembly seat, a spring is sleeved on an outer periphery of the stand, and two ends of the spring are connected with the protruding block and the connecting block respectively. The assembly seat is fixedly connected with a first follow-up arm, a ball is arranged on an end of the first follow-up arm away from the assembly seat, and the ball abuts against an arc-shaped limiting piece fixed to the second mounting frame.

8. The visual inspection-based seal ring inspection apparatus according to claim 7, wherein The arc-shaped limiting piece is concentric with the rotating shaft of the assembly plate, a first plane and a second plane with height difference are formed on a side of the arc-shaped limiting piece facing the ball, the first plane and the second plane are smoothly connected through an inclined surface, and during the process that the brush rollers are separated from the disc, the ball rolls along the first plane and the second plane in sequence, and the assembly seat drives the brush rollers to move towards the arc-shaped plate.

9. A method of detecting a seal ring by using the seal ring detection apparatus based on visual inspection according to claim 1, wherein The method comprises the following steps: In step one, the sealing ring is conveyed to the annular transparent area at the feeding station; In step two, the disc is rotated, and the sealing ring reaches the detection station; In step three, a plurality of first arc-shaped blocks and second arc-shaped blocks are in an expanded state, two driving discs simultaneously move towards the sealing ring, and after contacting the sealing ring, the sealing ring is deformed; In step four, the plurality of first arc-shaped blocks and second arc-shaped blocks are switched to a contracted state, the two driving discs are synchronously and uniformly rotated, the sealing ring is kept in a deformed state and runs in situ, and the sealing ring is imaged by two cameras; In step five, the images collected by the cameras are separated, and a detection result is obtained.

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