A finished product defect detection device based on a vision sensor and a detection method thereof

Abstract

The application discloses a finished product defect detection device based on a visual sensor and a detection method thereof. The device comprises at least two conveying devices, an outer wall detection unit between the two conveying devices, an adjusting unit on one side of one of the conveying devices, and an inner wall detection unit on the adjusting unit; a mounting bracket, and at least three limiting units arranged on the mounting bracket; the device can use multiple second visual sensors to detect the same area multiple times, thereby eliminating the influence of objective factors, improving the detection accuracy of the inner wall detection unit on the finished product, reducing detection errors, and thereby eliminating products that do not meet the predetermined standards, and avoiding unqualified products from flowing into the market.

Description

TECHNICAL FIELD

[0001] The application relates to a finished product defect detection device, in particular to a finished product defect detection device based on a visual sensor, and relates to the technical field of product detection. BACKGROUND

[0002] With the continuous improvement of automation in China, after the manufacturing work of the parts is completed, in order to avoid the damage of the inner and outer walls of the parts and ensure that the parts can meet the needs of customers, the finished products after manufacturing are needed to be detected.

[0003] However, the existing finished product detection device still has some problems. The existing detection device is mostly through a visual sensor to shoot the surface of the product, and then compare the picture with the standard picture, so as to find the defects of the detection area of the detected product. However, since the position of the existing visual detection device is relatively fixed, when the same product is detected, the position of the visual detection device is relatively fixed during data collection, which leads to too small change of independent variables between the collected data, and thus too small difference between the data, so that it is difficult to screen the collected data, resulting in inaccurate detection results.

[0004] Therefore, how to detect the predetermined area of the inner wall of the finished product for multiple times is a problem to be solved at present. SUMMARY

[0005] The application aims to provide a finished product defect detection device based on a visual sensor to solve the above problems in the prior art.

[0006] Technical scheme: a finished product defect detection device based on a visual sensor, comprising:

[0007] At least two transport devices, an outer wall detection unit between the two transport devices, an adjusting unit on one side of one of the transport devices, and an inner wall detection unit on the adjusting unit;

[0008] A mounting bracket, and at least three limiting units arranged on the mounting bracket;

[0009] At least in the working state, the outer wall detection unit detects the outer surface of the detected finished product during the process of transporting the detected finished product from one transport device to another transport device, then the limiting unit abuts against the detected finished product, and the inner wall detection unit can detect the inner wall of the detected finished product.

[0010] In a further embodiment, the outer wall detection unit comprises at least four support seats arranged on the mounting bracket, a transmission shaft arranged on the support seat, a transmission wheel sleeved on the transmission shaft, a drive gear arranged at one end of the transmission shaft, a rotating disc engaged with the four drive gears, at least two mounting frames arranged on the rotating disc, a first visual sensor arranged on the mounting frame, a transmission chain for connecting the transmission wheel, and a driving part connected to the other end of one of the transmission shafts; the detection position of the first visual sensor is adjusted to complete the detection work.

[0011] In a further embodiment, the driving part comprises a rotating motor arranged on the support seat, a first bevel gear arranged on the output end of the rotating motor, and a second bevel gear engaged with the first bevel gear.

[0012] The second bevel gear is arranged on one of the transmission shafts.

[0013] The rotating disc is in an arc structure.

[0014] At least in the working state, the detected product moves from one of the conveying devices to another conveying device, and in this process, the driving part rotates the rotating disc, thereby causing the first visual sensor to revolve around the detected product to complete the outer wall detection of the detected product. The detection area of the first visual sensor is adjusted to complete the detection work in the circumferential direction of the product.

[0015] In a further embodiment, the inner wall detection unit comprises a mounting seat, a placing groove arranged on the mounting seat, an electromagnetic device arranged in the placing groove, a magnetic rotating member arranged in the placing groove, a rotating disc connected to the magnetic rotating member, four adjusting motors arranged uniformly on the rotating disc, an adjusting screw arranged on the output end of the adjusting motor, and a group of inner wall detection parts arranged on the adjusting screw.

[0016] The rotating disc is further provided with a protruding end, the mounting seat is further provided with a limiting groove, and the protruding end is located in the limiting groove.

[0017] The electromagnetic device can drive the magnetic rotating member to rotate.

[0018] The midpoint of the adjusting screw can divide the adjusting screw into two ends, wherein the thread direction of the end close to the adjusting motor is opposite to that of the end away from the adjusting motor, thereby causing the two inner wall detection parts to approach or move away from each other when the adjusting motor moves; the distance between the two inner wall detection parts is adjusted, thereby enabling the two inner wall detection parts to perform multi-angle detection work on the same area of the detected product at the same time.

[0019] In a further embodiment, the inner wall detection unit comprises an adjusting member sleeved on the adjusting screw, a connecting frame connected with the adjusting member, a ring-shaped frame for connecting the connecting frame, and a light supplementing device and a second visual sensor arranged at intervals in the circumferential direction of the ring-shaped frame.

[0020] The planes where the two inner wall detection units are located are parallel to the plane where the mounting seat is located, and the two ring-shaped frames and the axis of the magnetic rotating member coincide with each other; a plurality of groups of data of the inner wall of the detected product can be collected, and the inner wall detection work of the detected product can be completed.

[0021] In a further embodiment, the adjusting unit comprises a base, an adjusting cylinder located on the base, an adjusting sliding block at the output end of the adjusting cylinder, an adjusting plate connected with the adjusting sliding block, and a sliding rail in the length direction of the base and in sliding connection with the adjusting sliding block.

[0022] The adjusting plate is connected with the mounting seat; the position of the inner wall detection unit in the measured product is adjusted, and the detection work of the inner wall of the measured product can be completed.

[0023] In a further embodiment, the limiting unit comprises a first adjusting assembly located on the mounting support, a second adjusting assembly located on the first adjusting assembly, a lifting cylinder connected with the second adjusting assembly, a lifting plate at the output end of the lifting cylinder, and a limiting assembly located on the lifting plate.

[0024] The first adjusting assembly and the second adjusting assembly are the same structure and are vertically placed; the position of the limiting assembly can be adjusted, and the clamping work of products of different sizes can be completed.

[0025] In a further embodiment, the first adjusting assembly comprises a set of mounting plates symmetrically mounted on the mounting support, a displacement motor provided on the mounting plate, a transmission screw connected with the output end of the displacement motor, a transmission member sleeved on the transmission screw, an adjusting seat connected with the transmission member, a set of limiting seats symmetrically mounted on the adjusting seat, and a limiting tube connected with the limiting seat and located on the mounting support.

[0026] The lifting cylinder is located on the adjusting seat in the second adjusting assembly.

[0027] During the adjusting work, the displacement motor drives the transmission member to move, so that the two transmission members located on the transmission screw move closer to each other or farther away from each other; the clamping and limiting work of the detected product of different sizes can be completed, and the inner wall detection unit can complete the detection work of the inner wall of the finished product.

[0028] In further embodiments, the limiting assembly comprises a limiting motor and an adsorption device arranged on the lifting plate, a set of third connecting rods symmetrically arranged on the lifting plate, a first connecting rod connected with the output end of the limiting motor, a second connecting rod connected with the first connecting rod, a rectangular limiting block arranged on the third connecting rod away from the limiting motor, and a limiting rod connected with the other third connecting rod;

[0029] The lifting plate is further provided with a limiting slot for the limiting rod to pass through;

[0030] The limiting rod passes through the rectangular limiting block;

[0031] The second connecting rod is connected with the third connecting rod; the position of the limiting assembly can be adjusted according to the actual size of the detected product, thereby completing the clamping and limiting work on different sizes of the detected product.

[0032] A detection method of the finished product defect detection device based on the above-mentioned visual sensor, comprising the following steps:

[0033] S1: when the surface of the detected product needs to be detected for defects, first place the detected product on one of the conveying devices, then under the movement of the conveying device, the detected product passes through the outer wall detection unit and then falls onto the other conveying device at one end;

[0034] S2: during the process of the detected product passing through the outer wall detection unit, the rotating motor starts to rotate, thereby the rotating motor in motion can drive the first bevel gear to start rotating, thereby the first bevel gear in motion can drive the second bevel gear to start rotating, thereby the second bevel gear in motion drives the transmission shaft connected therewith to start moving, then the transmission shaft in motion can drive the transmission shaft to rotate, thereby the transmission wheel in motion can drive the transmission chain to start moving, thereby the driving gear can start rotating, then the driving gear in motion can drive the rotating disc to start moving, then the rotating disc in motion can drive the mounting frame to start moving, thereby the mounting frame in motion can drive the first visual sensor to start rotating, thereby the first visual sensor can make a revolution motion around the detected product, thereby under the cooperation of the conveying device and the outer wall detection device, the detected product in the feeding process and the discharging process can be detected for at least two times of outer wall detection work;

[0035] S3: When the detected product is located on another conveying device, the conveying device stops working, at this time the displacement motor starts working, and then the moving displacement motor can drive the transmission screw rod to start moving, and then the moving transmission screw rod can drive the transmission member to start moving, and then the moving transmission member can move close to each other, and then the second adjusting assembly starts working, and the movement process is the same as above, and here it will not be described too much, and then the lifting cylinder starts working, and then the moving lifting cylinder can drive the lifting plate to start moving, and then under the cooperation of the first adjusting assembly, the second adjusting assembly and the lifting cylinder, the position adjustment work of the limiting assembly can be completed, so that the position of the limiting assembly can be adjusted according to the size of the finished product transmitted back by the first visual sensor;

[0036] S4: When the position adjustment work of the limiting assembly is completed, the limiting motor starts working at this time, and then the moving limiting motor can drive the first connecting rod to start working, and then the moving first connecting rod can drive the second connecting rod to start working, and then the moving second connecting rod can drive the third connecting rod to start rotating, and then the moving third connecting rod can drive the limiting rod to start moving, and then the limiting rod can be extended, so that one end of the limiting rod abuts against the surface of the detected finished product, and then under the cooperation of multiple limiting assemblies, the limiting work of the detected finished product is completed;

[0037] S5: When the limiting work of the detected product is completed, the adjusting cylinder starts working at this time, and then the moving adjusting cylinder drives the adjusting sliding block to start moving, and then the moving adjusting sliding block moves in the length direction of the sliding rail, and then the moving adjusting sliding block can drive the adjusting plate to start moving, and then the position of the inner wall detection unit can be adjusted, and then the inner wall detection unit can be extended into the finished product, so as to facilitate the detection work of the inner wall detection unit on the inner wall of the finished product;

[0038] S6: When the inner wall detection unit is located in the finished product, the light supplementing device and the second visual sensor start working at this time, and then the second visual sensor can complete the detection work of the inner wall of the detected product, and then the electromagnetic device is powered on, and then the powered electromagnetic device can drive the magnetic rotating member to start rotating, and then the moving magnetic rotating member can drive the rotating disc to start rotating, and then the detection area of the second visual sensor and the light supplementing area of the light supplementing device can be adjusted, and then the same area of the inner wall of the detected finished product can be detected multiple times, and the detection results are screened and removed at the same time, and then the accuracy of the detection results is ensured, in order to ensure the quantity of detection data, and then the adjusting motor starts working during the detection process, and then the distance between the two adjusting members can be adjusted through the rotation of the adjusting screw rod, and then the distance between the two inner wall detection units can be adjusted, and then at the same time, the two inner wall detection units can perform multi-angle detection work on the same area on the detected finished product, and then multiple groups of data of the inner wall of the detected product can be collected, and then the inner wall detection work of the detected product is completed;

[0039] S7: when the detection work of the detected product is completed, the two conveying devices move reversely, so that the detected product can be conveyed to another conveying device, in the process, the outer wall detection unit can perform secondary outer surface detection work on the detected product, and send the measured value to the control system;

[0040] S8: the detected product after completing the detection is taken off, and another detected product without detection is replaced, and then the above steps S1-S7 are repeated until the detection work of all detected products is completed.

[0041] Beneficial effects: the application discloses a finished product defect detection device based on a visual sensor, in order to be able to detect the specified area of the inner wall of the finished product multiple times, therefore, the device is provided with an arc-shaped frame, and a double-head light supplementing device and a double-head second visual sensor are arranged on the arc-shaped frame, according to the positional relationship between the inner wall detection part and the detected product, the light supplementing device and the second visual sensor at different positions are selected, at the same time, the distance between the two inner wall detection parts is adjusted through the cooperation between the electromagnetic device and the magnetic rotating part and through the driving adjustment of the adjusting motor, so as to adjust the detection angle between the second visual sensor and the detected product, then multiple second visual sensors can be used to detect the same area multiple times, so as to eliminate the influence of objective factors, improve the detection precision of the inner wall detection unit on the finished product, reduce the detection error, and then the products not meeting the specified standard can be removed, and the unqualified products can be prevented from flowing into the market. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a structural schematic diagram of the application.

[0043] Figure 2 is a structural schematic diagram of the limiting unit of the application.

[0044] Figure 3 is a structural schematic diagram of the limiting assembly of the application.

[0045] Figure 4 is a structural schematic diagram of the inner wall detection unit of the application.

[0046] Figure 5 is a top view of the inner wall detection unit of the application.

[0047] Figure 6 is a structural schematic diagram of the outer wall detection unit of the application.

[0048] The figure marks are: conveying device 1, mounting bracket 2, limiting unit 3, first adjusting assembly 31, mounting plate 311, displacement motor 312, transmission screw rod 313, transmission part 314, adjusting seat 315, limiting seat 316, limiting pipe 317, second adjusting assembly 32, lifting cylinder 33, lifting plate 34, limiting assembly 35, limiting motor 351, first connecting rod 352, second connecting rod 353, third connecting rod 354, limiting rod 355, limiting block 356, adsorption device 357, adjusting unit 4, base 41, adjusting cylinder 42, adjusting sliding block 43, sliding rail 44, adjusting plate 45, inner wall detection unit 5, mounting seat 51, magnetic rotating part 52, rotating disc 53, adjusting motor 54, adjusting screw rod 55, adjusting part 56, connecting frame 57, annular frame 58, light supplementing device 59, second visual sensor 510, outer wall detection unit 6, supporting seat 61, rotating motor 62, first bevel gear 63, second bevel gear 64, transmission shaft 65, transmission wheel 66, driving gear 67, rotating disc 68, mounting frame 69, first visual sensor 610. DETAILED DESCRIPTION

[0049] Through the research and analysis of the applicant, the reason for this problem (the difference between each data is too small, and it is difficult to screen the collected data, resulting in inaccurate detection results) is that the existing detection device is mostly through the visual sensor to shoot the surface of the product, and then compare the picture with the standard picture, and then find the defects of the detection area of the detected product. However, due to the relatively fixed position of the existing visual detection device, the position of the visual detection device is relatively fixed during the data collection process when detecting the same product, which leads to too small change of independent variable between the collected data, and thus the difference between each data is too small, and it is difficult to screen the collected data. In order to be able to detect the specified area of the inner wall of the finished product multiple times, an arc-shaped frame is arranged in the device, and a double-head light supplementing device and a double-head second visual sensor are arranged on the arc-shaped frame. According to the positional relationship between the inner wall detection part and the detected product, the light supplementing device and the second visual sensor at different positions are selected, and the distance between the two inner wall detection parts is adjusted through the cooperation between the electromagnetic device and the magnetic rotating part and the driving adjustment of the adjusting motor, so as to adjust the detection angle between the second visual sensor and the detected product, and thus multiple second visual sensors can be used to detect the same area multiple times, so as to eliminate the influence of objective factors, improve the detection accuracy of the inner wall detection unit for the finished product, reduce the detection error, and thus eliminate the products that do not meet the specified standard, and avoid the unqualified products flowing into the market.

[0050] A kind of finished product defect detection device based on visual sensor, including: transport device 1, mounting bracket 2, limiting unit 3, first adjusting assembly 31, mounting plate 311, displacement motor 312, transmission screw rod 313, transmission part 314, adjusting seat 315, limiting seat 316, limiting tube 317, second adjusting assembly 32, lifting cylinder 33, lifting plate 34, limiting assembly 35, limiting motor 351, first connecting rod 352, second connecting rod 353, third connecting rod 354, limiting rod 355, limiting block 356, adsorption device 357, adjusting unit 4, base 41, adjusting cylinder 42, adjusting sliding block 43, slide rail 44, adjusting plate 45, inner wall detection unit 5, mounting seat 51, magnetic rotating part 52, turntable 53, adjusting motor 54, adjusting screw rod 55, adjusting piece 56, connecting frame 57, annular frame 58, light supplementing device 59, second visual sensor 510, outer wall detection unit 6, support seat 61, rotating motor 62, first bevel gear 63, second bevel gear 64, transmission shaft 65, transmission wheel 66, drive gear 67, rotating disc 68, mounting frame 69, first visual sensor 610.

[0051] The device includes, at least two transport devices 1, outer wall detection unit 6 between the two transport devices 1, adjusting unit 4 on one side of one of the transport devices 1, and inner wall detection unit 5 on the adjusting unit 4;Mounting bracket 2, and at least three limiting units 3 provided on the mounting bracket 2;At least in working state, the detected finished product is transported from one transport device 1 to another transport device 1, and the outer wall detection unit 6 detects the outer surface of the detected finished product, then the limiting unit 3 abuts against the detected finished product, and then the inner wall detection unit 5 can detect the inner wall of the detected finished product;When the surface of the detected finished product needs to be detected, first place the detected product on one of the transport devices 1, then under the movement of the transport device 1, so that the detected finished product passes through the outer wall detection unit 6 and then falls into another transport device 1;When the detection work of the detected product is completed, the two transport devices 1 move reversely, so that the detected product can be transported to another transport device 1, and in this process, the outer wall detection unit 6 can perform secondary outer surface detection on the detected product, and send the measured value to the control system;The detected product after detection is taken off, and another undetected detected product is replaced, and then the above steps S1-S7 are repeated until the detection work of all detected products is completed;By placing the outer wall detection unit 6 between the two transport devices 1, the detected product can be detected during transportation, and the detection of the outer surface of the detected product can be completed.

[0052] The outer wall detection unit 6 comprises at least four support seats 61 arranged on the mounting bracket 2, a transmission shaft 65 arranged on the support seat 61, a transmission wheel 66 sleeved on the transmission shaft 65, a drive gear 67 arranged on one end of the transmission shaft 65, a rotating disc 68 engaged with the four drive gears 67, at least two mounting frames 69 arranged on the rotating disc 68, a first visual sensor 610 arranged on the mounting frame 69, a transmission chain for connecting the transmission wheel 66, and a driving part connected to the other end of one of the transmission shafts 65; the driving part comprises a rotating motor 62 arranged on the support seat 61, a first bevel gear 63 arranged on the output end of the rotating motor 62, and a second bevel gear 64 engaged with the first bevel gear 63; the second bevel gear 64 is arranged on one of the transmission shafts 65; the rotating disc 68 is in an arc structure; at least in the working state, the detected product moves from one conveying device 1 to another conveying device 1, in the process, the driving part drives the rotating disc 68 to rotate, and then the first visual sensor 610 rotates around the detected product to complete the outer wall detection of the detected product; in the process of the detected product passing through the outer wall detection unit 6, the rotating motor 62 starts to rotate, and then the rotating motor 62 drives the first bevel gear 63 to start rotating, and then the first bevel gear 63 drives the second bevel gear 64 to start rotating, and then the second bevel gear 64 drives the transmission shaft 65 connected thereto to start moving, and then the transmission shaft 65 drives the transmission shaft 65 to rotate, and then the transmission wheel 66 drives the transmission chain to start moving, and then the driving gear 67 starts to rotate, and then the driving gear 67 drives the rotating disc 68 to start moving, and then the rotating disc 68 drives the mounting frame 69 to start moving, and then the mounting frame 69 drives the first visual sensor 610 to start rotating, and then the first visual sensor 610 rotates around the detected product, and then under the cooperation of the conveying device 1 and the outer wall detection device, the detected product can be detected at least twice in the feeding process and the discharging process, through the outer wall detection, a plurality of groups of data of the outer surface of the detected product can be obtained, and then for the detected product with a diameter smaller than that of the ring-shaped frame 58, the inner wall detection unit 5 can also detect the outer wall of the detected product, and then the two groups of data collected by different ways can be compared, and then the detection accuracy of the outer surface of the product can be improved.

[0053] The inner wall detection unit 5 comprises a mounting base 51, a placing groove formed on the mounting base 51, an electromagnetic device located in the placing groove, a magnetic rotating part 52 located in the placing groove, a rotating disc 53 connected with the magnetic rotating part 52, four adjusting motors 54 uniformly arranged on the rotating disc 53, an adjusting screw rod 55 arranged on the output end of the adjusting motor 54, and a group of inner wall detection parts arranged on the adjusting screw rod 55; the rotating disc 53 is further provided with a protruding end, the mounting base 51 is further provided with a limiting groove, and the protruding end is located in the limiting groove; the electromagnetic device can drive the magnetic rotating part 52 to rotate; the midpoint of the adjusting screw rod 55 can divide the adjusting screw rod 55 into two ends, wherein the thread direction of the end close to the adjusting motor 54 is opposite to that of the end far from the adjusting motor 54, so that the two inner wall detection parts are close to or far away from each other when the adjusting motor 54 moves; the inner wall detection part comprises an adjusting part 56 sleeved on the adjusting screw rod 55, a connecting frame 57 connected with the adjusting part 56, an annular frame 58 for connecting the connecting frame 57, and a light supplementing device 59 and a second visual sensor 510 arranged at intervals in the circumferential direction of the annular frame 58; the second visual sensor 510 has a double-head structure, one head of the second visual sensor 510 can detect the inner wall of the detected product outside the annular frame 58 when the inner wall detection part is located in the detected product, and the other head of the second visual sensor 510 can detect the outer surface of the detected product when the inner wall detection part is sleeved on the detected product; the light supplementing device 59 also has a double-head structure, and different positions of the light supplementing device 59 are selected according to the positional relationship between the inner wall detection part and the detected product; the planes where the two inner wall detection parts are located are parallel to the plane where the mounting base 51 is located, and the axes of the two annular frames 58 and the magnetic rotating part 52 coincide with each other; when the inner wall detection unit 5 is located in the finished product, the light supplementing device 59 and the second visual sensor 510 start to work at this time, so that the second visual sensor 510 can complete the detection work of the inner wall of the detected product, then the electromagnetic device is powered on, and the powered-on electromagnetic device can drive the magnetic rotating part 52 to start rotating, then the moving magnetic rotating part 52 can drive the rotating disc 53 to start rotating, so that the detection area of the second visual sensor 510 and the light supplementing area of the light supplementing device 59 can be adjusted, and then the same area of the inner wall of the detected finished product can be detected multiple times, and the detection results are screened and removed at the same time, so as to ensure the accuracy of the detection results; in order to ensure the amount of detection data, the adjusting motor 54 starts to work during the detection process, so that the distance between the two adjusting parts 56 can be adjusted through the rotation of the adjusting screw rod 55, and then the distance between the two inner wall detection parts can be adjusted, so that the same area on the detected finished product can be detected at multiple angles at the same time, and then multiple groups of data of the inner wall of the detected product can be collected, and then the inner wall detection work of the detected product can be completed.

[0054] In further embodiments, in order to be able to detect the inner wall of the product, a light supplement device 59 is arranged on the inner wall detection unit 5, thereby providing a good shooting environment for the second visual sensor 510. However, when the inner wall of the product to be detected is smooth, the light supplement device 59 and the second visual sensor 510 in the same inner wall detection unit are both located at a predetermined position, thereby causing the second visual sensor 510 to shoot a picture of the reflected light of the light supplement device 59, and thus the picture of the second visual sensor 510 cannot clearly reflect the actual situation of the inner wall of the product to be detected.

[0055] In order to solve the above problems, at least two inner wall detection units with the same structure are arranged in the device, and the light supplement device 59 and the second visual sensor 510 on the inner wall detection unit are arranged at intervals. In order to reduce the above-mentioned situation, at least two inner wall detection units are arranged in the device, and the planes on which the two inner wall detection units are located are parallel to each other. When the reflection phenomenon occurs, the second visual sensor 510 on the same plane will receive more reflected light, thereby causing the detection result to be inaccurate. Therefore, when the light supplement device 59 on one of the inner wall detection units is working, the second visual sensor 510 on the same inner wall detection unit is not working, and the light supplement device 59 and the second visual sensor 510 on the other inner wall detection unit are in the opposite situation. Therefore, the second visual sensor 510 on the other inner wall detection unit can perform visual detection on the light supplement area of the light supplement device 59 on the remaining inner wall detection unit, thereby reducing the intensity of the reflected light which causes the information detected by the second visual sensor 510 to be inaccurate, and thus ensuring that the detection result can reflect the actual situation of the product to be detected.

[0056] When the inner wall of the finished product does not need to be detected, the diameter of the ring-shaped frame is greater than the diameter of the product to be detected. At this time, the movement of the adjusting unit 4 can be adjusted, thereby enabling the two inner wall detection units to be sleeved on a part of the product to be detected, and then enabling the inner wall detection unit to move on the axis of the product, thereby completing the detection of the outer wall of the product to be detected. The outer wall detection unit 6, when detecting, the first visual sensor 610 and the product to be detected are both in a moving state, thereby causing part of the image detected by the first visual sensor 610 to be blurred. Therefore, one of the limiting mechanisms is abutted with one end of the product to be detected and is lifted to a certain height, and then the inner wall detection unit is sleeved on the product to be detected and reciprocates in the length direction, thereby keeping the product to be detected and the inner wall detection unit in a relatively static state during the detection process. After completing the detection of a certain area, the position of the inner wall detection unit is adjusted, thereby avoiding the blurring of the image detected by the second visual sensor 510. Therefore, through the cooperation of the outer wall detection unit 6 and the inner wall detection unit 5, the product to be detected can be detected in multiple forms, thereby ensuring the accuracy of the result.

[0057] The adjusting unit 4 comprises a base 41, an adjusting cylinder 42 located on the base 41, an adjusting slide block 43 at the output end of the adjusting cylinder 42, an adjusting plate 45 connected with the adjusting slide block 43, and a slide rail 44 in the length direction of the base 41 and in sliding connection with the adjusting slide block 43; the adjusting plate 45 is connected with a mounting seat 51; after the limiting work on the detected product is completed, the adjusting cylinder 42 starts to work, the moving adjusting cylinder 42 drives the adjusting slide block 43 to start to move, the moving adjusting slide block 43 moves in the length direction of the slide rail 44, the moving adjusting slide block 43 can drive the adjusting plate 45 to start to move, the position of the inner wall detecting unit 5 can be adjusted, the inner wall detecting unit 5 can extend into the finished product, and the inner wall detecting unit 5 can detect the inner wall of the finished product; the position of the inner wall detecting unit 5 in the detected product is adjusted, and the detection work on the inner wall of the detected product can be completed.

[0058] The limiting unit 3 comprises a first adjusting assembly 31 on the mounting bracket 2, a second adjusting assembly 32 on the first adjusting assembly 31, a lifting cylinder 33 connected with the second adjusting assembly 32, a lifting plate 34 on the output end of the lifting cylinder 33, and a limiting assembly 35 on the lifting plate 34; the first adjusting assembly 31 and the second adjusting assembly 32 are vertically placed and have the same structure; the first adjusting assembly 31 comprises a set of mounting plates 311 symmetrically mounted on the mounting bracket 2, a displacement motor 312 on the mounting plate 311, a transmission screw rod 313 connected with the output end of the displacement motor 312, a transmission part 314 sleeved on the transmission screw rod 313, an adjusting seat 315 connected with the transmission part 314, a set of limiting seats 316 symmetrically mounted on the adjusting seat 315, and a limiting tube 317 connected with the limiting seat 316 and located on the mounting support; the lifting cylinder 33 is located on the adjusting seat 315 in the second adjusting assembly 32; during the adjusting work, the displacement motor 312 drives the transmission part 314 to move, so that the two transmission parts 314 on the transmission screw rod 313 move close to or away from each other; after the detected product is located on another conveying device 1, the conveying device 1 stops working, at this time the displacement motor 312 starts to work, so that the moving displacement motor 312 can drive the transmission screw rod 313 to start to move, then the moving transmission screw rod 313 can drive the transmission part 314 to start to move, and then the moving transmission part 314 can move close to each other, then the second adjusting assembly 32 starts to work, and the movement process is the same as above, which will not be described in detail here, then the lifting cylinder 33 starts to work, so that the moving lifting cylinder 33 can drive the lifting plate 34 to start to move, and then under the cooperation of the first adjusting assembly 31, the second adjusting assembly 32 and the lifting cylinder 33, the position adjustment work of the limiting assembly 35 can be completed, so that the position of the limiting assembly 35 can be adjusted according to the size of the finished product transmitted back by the first vision sensor 610; the position of the limiting assembly 35 can be adjusted according to the actual size of the detected product collected by the first vision sensor 610, so that the detected product of different sizes can be clamped and limited, and then the inner wall detection unit 5 can complete the detection work of the inner wall of the finished product, and the detected product can be located above the conveying device 1, so that the arc-shaped frame larger than the diameter of the finished product can be sleeved on the finished product, and the detection work of the outer surface of the finished product can be completed, the outer surface data of the finished product obtained by different collection methods are compared, and then the measurement of the finished product can be completed, and the measurement accuracy is improved.

[0059] The limiting assembly 35 comprises a limiting motor 351 and an adsorption device 357 arranged on the lifting plate 34, a set of third connecting rods 354 symmetrically arranged on the lifting plate 34, a first connecting rod 352 connected with the output end of the limiting motor 351, a second connecting rod 353 connected with the first connecting rod 352, a rectangular limiting block 356 arranged on the third connecting rod 354 away from the limiting motor 351, and a limiting rod 355 connected with the other third connecting rod 354; the lifting plate 34 is further provided with a limiting groove for the limiting rod 355 to pass through; the limiting rod 355 passes through the rectangular limiting block 356; the second connecting rod 353 is connected with the third connecting rod 354; when the position adjustment of the limiting assembly 35 is completed, the limiting motor 351 starts to work, and then the moving limiting motor 351 can drive the first connecting rod 352 to work, and then the moving first connecting rod 352 can drive the second connecting rod 353 to work, and then the moving second connecting rod 353 can drive the third connecting rod 354 to rotate, and then the moving third connecting rod 354 can drive the limiting rod 355 to move, and then the limiting rod 355 can be extended to abut against the surface of the detected product at one end, and then the limiting work of the detected product is completed under the cooperation of a plurality of limiting assemblies 35; the position of the limiting assembly 35 can be adjusted according to the actual size of the detected product, and then the clamping and limiting work of the detected product of different sizes can be completed.

[0060] The working principle is explained as follows: when the surface of the detected product needs to be detected, the detected product is placed on one of the conveying devices 1, and then the detected product passes through the outer wall detection unit 6 under the movement of the conveying device 1 and then falls into the other conveying device 1; during the process that the detected product passes through the outer wall detection unit 6, the rotating motor 62 starts to rotate, and then the rotating motor 62 can drive the first bevel gear 63 to rotate, and then the first bevel gear 63 can drive the second bevel gear 64 to rotate, and then the second bevel gear 64 drives the transmission shaft 65 connected thereto to move, and then the transmission shaft 65 can drive the transmission shaft 65 to rotate, and then the transmission wheel 66 can drive the transmission chain to move, and then the driving gear 67 can start to rotate, and then the driving gear 67 can drive the rotating disc 68 to move, and then the rotating disc 68 can drive the mounting frame 69 to move, and then the mounting frame 69 can drive the first visual sensor 610 to rotate, and then the first visual sensor 610 can revolve around the detected product, and then the detected product can be detected at least twice in the outer wall detection device under the cooperation of the conveying device 1 and the outer wall detection device; when the detected product is located on the other conveying device 1, the conveying device 1 stops working, and then the displacement motor 312 starts to work, and then the displacement motor 312 can drive the transmission screw 313 to move, and then the transmission screw 313 can drive the transmission member 314 to move, and then the transmission member 314 can move close to each other, and then the second adjusting assembly 32 starts to work, and the movement process is the same as above, and here it is not described in detail, and then the lifting cylinder 33 starts to work, and then the lifting cylinder 33 can drive the lifting plate 34 to move, and then the position adjusting work of the limiting assembly 35 can be completed under the cooperation of the first adjusting assembly 31, the second adjusting assembly 32 and the lifting cylinder 33, so that the position of the limiting assembly 35 can be adjusted according to the size of the product transmitted by the first visual sensor 610; when the position adjusting work of the limiting assembly 35 is completed, the limiting motor 351 starts to work, and then the first connecting rod 352 can drive the second connecting rod 353 to work, and then the second connecting rod 353 can drive the third connecting rod 354 to rotate, and then the third connecting rod 354 can drive the limiting rod 355 to move, and then the limiting rod 355 can extend, so that one end of the limiting rod 355 abuts against the surface of the detected product, and then the limiting work of the detected product can be completed under the cooperation of the limiting assemblies 35.When the position limiting work of the detected product is completed, the adjusting cylinder 42 starts to work, and the moving adjusting cylinder 42 drives the adjusting slider 43 to start to move, then the moving adjusting slider 43 moves in the length direction of the slide rail 44, and then the moving adjusting slider 43 can drive the adjusting plate 45 to start to move, thereby adjusting the position of the inner wall detection unit 5, so that the inner wall detection unit 5 can extend into the finished product, and the inner wall detection unit 5 can detect the inner wall of the finished product; when the inner wall detection unit 5 is located in the finished product, the light supplementing device 59 and the second visual sensor 510 start to work, and then the second visual sensor 510 can complete the detection work of the inner wall of the detected product, and then the electromagnetic device is powered, and then the powered electromagnetic device can drive the magnetic rotating part 52 to start to rotate, and then the moving magnetic rotating part 52 can drive the rotating disc 53 to start to rotate, thereby adjusting the detection area of the second visual sensor 510 and the light supplementing area of the light supplementing device 59, and then the same area of the inner wall of the detected product can be detected multiple times, and the detection results are screened and removed, thereby ensuring the accuracy of the detection results, in order to ensure the number of detection data, and then the adjusting motor 54 starts to work in the detection process, and then the distance between the two adjusting parts 56 can be adjusted by rotating the adjusting screw rod 55, thereby adjusting the distance between the two inner wall detection parts, and then at the same time, the two inner wall detection parts can perform multi-angle detection work on the same area of the detected product, thereby collecting multiple groups of data of the inner wall of the detected product, and then completing the inner wall detection work of the detected product; when the detection work of the detected product is completed, the two conveying devices 1 move reversely, and then the detected product can be conveyed to another conveying device 1, in this process, the outer wall detection unit 6 can perform secondary outer surface detection work on the detected product, and send the measured value to the control system; the detected product after completing the detection is taken off, and another undetected detected product is replaced, and then the above steps S1-S7 are repeated until the detection work of all detected products is completed.

[0061] The preferred embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the specific details in the above-described embodiments, and various equivalent transformations can be made to the technical solutions of the application within the technical concept of the application, and these equivalent transformations all belong to the protection scope of the application.

Claims

1. A finished product defect detection device based on a vision sensor, characterized in that, include: At least two transport devices, an outer wall detection unit located between the two transport devices, an adjustment unit located on one side of one of the transport devices, and an inner wall detection unit located on the adjustment unit; Mounting bracket, and at least three limiting units disposed on the mounting bracket; At least in the working state, during the process of the finished product being inspected being transported from one transport device to another, the outer wall inspection unit inspects the outer surface of the finished product, and then the limiting unit abuts against the finished product, so that the inner wall inspection unit can inspect the inner wall of the finished product. The inner wall detection unit includes a mounting base, a placement slot opened on the mounting base, an electromagnetic device located in the placement slot, a magnetic rotating component located in the placement slot, a turntable connected to the magnetic rotating component, four adjusting motors evenly arranged on the turntable, an adjusting screw located at the output end of the adjusting motor, and a set of inner wall detection parts located on the adjusting screw. The turntable is also provided with a protruding end, and the mounting base is also provided with a limiting groove, with the protruding end located in the limiting groove; The electromagnetic device can drive the magnetic rotating component to rotate; The adjusting screw can be divided into two equal parts by the midpoint of the adjusting screw. The thread direction of the end closer to the adjusting motor is opposite to that of the end farther away from the adjusting motor. Thus, when the adjusting motor moves, the two inner wall detection parts move closer to each other or further away from each other.

2. The finished product defect detection device based on a vision sensor according to claim 1, characterized in that: The outer wall detection unit includes at least four support seats on the mounting bracket, a drive shaft on the support seats, a drive wheel sleeved on the drive shaft, a drive gear mounted on one end of the drive shaft, a rotating disk meshing with the four drive gears, at least two mounting brackets on the rotating disk, a first vision sensor located on the mounting bracket, a drive chain for connecting the drive wheel, and a drive unit connected to the other end of one of the drive shafts.

3. The finished product defect detection device based on a vision sensor according to claim 2, characterized in that: The drive unit includes a rotary motor mounted on the support base, a first bevel gear mounted on the output end of the rotary motor, and a second bevel gear meshing with the first bevel gear. The second bevel gear is located on one of the drive shafts; The rotating disk has an arc-shaped structure; At least in the working state, the item to be inspected moves from one of the transport devices to another. During this process, the drive unit causes the turntable to rotate, which in turn causes the first vision sensor to revolve around the finished product to complete the inspection of the outer wall of the finished product.

4. The finished product defect detection device based on a vision sensor according to claim 3, characterized in that: The inner wall detection unit includes an adjusting member sleeved on the adjusting screw, a connecting frame connected to the adjusting member, an annular frame for connecting the connecting frame, and multiple supplementary lighting devices and multiple second vision sensors spaced apart in the circumferential direction of the annular frame. The planes of the two inner wall detection sections are parallel to the plane of the mounting base, and the axes of the two ring frames and the magnetic rotating parts coincide.

5. The finished product defect detection device based on a vision sensor according to claim 4, characterized in that: The adjustment unit includes a base, an adjustment cylinder located on the base, an adjustment slider connected to the output end of the adjustment cylinder, an adjustment plate connected to the adjustment slider, and a slide rail slidably connected to the adjustment slider and located in the length direction of the base. The adjustment plate is connected to the mounting base.

6. The finished product defect detection device based on a vision sensor according to claim 5, characterized in that: The limiting unit includes a first adjusting component located on the mounting bracket, a second adjusting component located on the first adjusting component, a lifting cylinder connected to the second adjusting component, a lifting plate located at the output end of the lifting cylinder, and a limiting component located on the lifting plate. The first adjustment component and the second adjustment component have the same structure and are placed vertically.

7. The finished product defect detection device based on a vision sensor according to claim 6, characterized in that: The first adjustment component includes a set of mounting plates symmetrically mounted on the mounting bracket, a displacement motor mounted on the mounting plate, a transmission screw connected to the output end of the displacement motor, a transmission component sleeved on the transmission screw, an adjustment seat connected to the transmission component, a set of limiting seats symmetrically mounted on the adjustment seat, and a limiting tube connected to the limiting seat and located on the mounting bracket. The lifting cylinder is located on the adjusting seat in the second adjusting assembly; During adjustment, the displacement motor drives the transmission components to move, thereby causing the two transmission components located on the transmission screw to move closer to or further away from each other.

8. The finished product defect detection device based on a vision sensor according to claim 7, characterized in that: The limiting component includes a limiting motor and an adsorption device disposed on the lifting plate, a set of third connecting rods symmetrically installed on the lifting plate, a first connecting rod connected to the output end of the limiting motor, a second connecting rod connected to the first connecting rod, a rectangular limiting block disposed on the third connecting rod away from the limiting motor, and a limiting rod connected to another third connecting rod. The lifting plate is also provided with a limiting groove for the limiting rod to pass through; The limiting rod passes through the rectangular limiting block; The second link is connected to the third link.

9. The detection method of the finished product defect detection device for vision sensors according to claim 8, characterized in that, Includes the following steps: S1: When it is necessary to inspect the surface of the finished product, the product to be inspected is first placed on one of the transport devices. Then, under the movement of the transport device, the finished product to be inspected passes through the outer wall inspection unit and then falls into another transport device at one end. S2: During the process of the finished product being inspected passing through the outer wall inspection unit, the rotating motor starts to rotate, which in turn drives the first bevel gear to rotate, which in turn drives the second bevel gear to rotate, which in turn drives the connected drive shaft to rotate, which in turn drives the drive chain to rotate, which in turn drives the drive gear to rotate, which in turn drives the rotating disk to rotate, which in turn drives the mounting frame to rotate, which in turn drives the first vision sensor to rotate, which in turn causes the first vision sensor to revolve around the inspected product. With the cooperation of the transport device and the outer wall inspection device, at least two outer wall inspections can be performed on the inspected product during the loading and unloading processes. S3: When the inspected item is placed on another transport device, the transport device stops working. At this time, the displacement motor starts working, and the moving displacement motor drives the transmission screw to start moving. Then the moving transmission screw drives the transmission components to start moving, and the moving transmission components can move closer to each other. Then the second adjustment component starts working, and the movement process is the same as above. Then the lifting cylinder starts working, and the moving lifting cylinder drives the lifting plate to start moving. Then, with the cooperation of the first adjustment component, the second adjustment component and the lifting cylinder, the position adjustment of the limit component can be completed, so that the position of the limit component can be adjusted according to the finished product size transmitted back by the first vision sensor. S4: After the position adjustment of the limiting components is completed, the limiting motor starts to work. The moving limiting motor can drive the first link to work, then the moving first link can drive the second link to work, then the moving second link can drive the third link to rotate, then the moving third link can drive the limiting rod to move, and then the limiting rod can extend so that one end of the limiting rod abuts against the surface of the finished product being inspected. Thus, with the cooperation of multiple limiting components, the limiting work of the finished product being inspected is completed. S5: After the limiting work of the inspected product is completed, the adjusting cylinder starts to work, and the moving adjusting cylinder drives the adjusting slider to start moving. Then the moving adjusting slider moves in the length direction of the slide rail, and the moving adjusting slider can drive the adjusting plate to start moving, thereby adjusting the position of the inner wall detection unit, so that the inner wall detection unit can extend into the finished product, making it convenient for the inner wall detection unit to perform detection work on the inner wall of the finished product. S6: When the inner wall detection unit is located inside the finished product, the supplementary lighting device and the second vision sensor start working. The second vision sensor can then complete the detection of the inner wall of the product being inspected. Then, the electromagnetic device is energized, which drives the magnetic rotating part to rotate. The moving magnetic rotating part drives the turntable to rotate, thereby adjusting the detection area of ​​the second vision sensor and the supplementary lighting area of ​​the supplementary lighting device. This allows for multiple inspections of the same area of ​​the inner wall of the finished product, while simultaneously filtering and discarding the inspection results to ensure accuracy. To ensure the quantity of inspection data, the adjusting motor starts working during the inspection process. The distance between the two adjusting parts is adjusted by rotating the adjusting screw, thereby adjusting the distance between the two inner wall detection units. At the same time, the two inner wall detection units can perform multi-angle inspections of the same area on the finished product, collecting multiple sets of data on the inner wall of the product being inspected, thus completing the inner wall inspection of the product being inspected. S7: After the inspection of the item is completed, the two transport devices move in opposite directions, so that the item can be transported to another transport device. During this process, the outer wall inspection unit can perform a second outer surface inspection of the item and send the measured values ​​to the control system. S8: Remove the tested item that has been tested and replace it with another untested item. Then repeat steps S1-S7 until all tested items have been tested.

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