Visual inspection device and VDA connector detection method based on visual technology

Abstract

The invention relates to the technical field of visual detection, and discloses a visual detection device and a VDA connector detection method based on the visual technology.The visual detection device comprises a box body and a VDA connector part, a workbench is arranged in the box body, an industrial detection camera is fixedly installed on the inner top wall of the box body, and a conveying belt is installed on the upper surface of the workbench; shaft seats are symmetrically fixed to the two sides of the outer surface of the conveying belt. According to the visual detection device, by arranging the rotary telescopic assembly, the clamping head and the driving plate, when the conveying belt conveys a VDA connector part to a photographing area of the industrial detection camera, the driving plate pushes the clamping head to move through the rotary telescopic assembly, so that the clamping head can clamp the VDA connector part, and the VDA connector part is clamped by the clamping head in cooperation with the arrangement of the rotary part; according to the clamping device, the rotary telescopic assembly is arranged, so that the clamped VDA connector part can rotate along with the rotary telescopic assembly, the industrial detection camera can shoot different positions of the outer side face of the VDA connector part, manual clamping of the VDA connector part is not needed, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of visual detection, and specifically to a visual detection device and a VDA connector detection method based on visual technology. Background Art

[0002] A VDA connector is a connector for quick-sealing connection in the automotive manufacturing process. Before assembling and welding the various pipe body parts that make up the VDA connector, it is necessary to detect whether there are defects on the surface of the pipe body after machining. Currently, many manufacturers still use manual detection methods to detect defects in VDA connectors.

[0003] Chinese Patent CN115656196B discloses a visual detection device and a detection method for industrial part defect detection. By setting a workpiece clamping component to clamp the workpiece from both ends, and driving the workpiece to continuously rotate during the process of the workpiece clamping component clamping and transporting the workpiece, when the workpiece is detected by the defect detection vision module, the conditions of different positions on the surface of the workpiece can be detected, making the detection result more comprehensive.

[0004] The above device can be applied to the detection of VDA connectors to detect whether there are defects on the appearance of the pipe body used to assemble VDA connectors. However, using this detection device requires manual clamping of both ends of the VDA connector to the workpiece clamping component. Since the upper limit of the operation speed of the human hand is relatively low, the detection speed of the device is slow, which has a great impact on the working efficiency of the visual detection equipment and cannot fully utilize the fast detection ability of the visual detection system. Therefore, a visual detection device and a VDA connector detection method based on visual technology are proposed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a visual detection device and a VDA connector detection method based on visual technology, which have the advantages of automatically clamping the VDA connector and controlling the rotation of the VDA connector, and solve the problems mentioned in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A visual detection device includes a box body and VDA connector parts. A workbench is arranged inside the box body, and an industrial detection camera is fixedly installed on the inner top wall of the box body. A conveyor belt is installed on the upper surface of the workbench, and shaft seats are symmetrically and fixedly arranged on both sides of the outer surface of the conveyor belt; The conveyor belt is provided with an automatic clamping mechanism, which includes a rotating telescopic assembly, a clamping head and a driving plate. The rotating telescopic assembly includes a sleeve, a telescopic rod, a rotating sleeve and a telescopic spring. The two ends of the telescopic rod are respectively axially slidably sleeved with the sleeve and the rotating sleeve. The rotating sleeve is rotatably mounted on the shaft seat. The two ends of the telescopic spring are respectively fixedly connected to the outer wall of one side of the sleeve and one end of the rotating sleeve. The clamping head is fixedly connected to one end of the telescopic rod. The driving plate is arranged on both sides of the photographing area of ​​the industrial detection camera, and is used to compress the telescopic spring entering the photographing area of ​​the industrial detection camera, so that the telescopic rod pushes the clamping head to clamp the VDA joint parts. Rotating components are provided on both sides of the industrial inspection camera, and the rotating components are used to drive the sleeve to rotate; The two ends of the conveyor belt are respectively provided with a feeding mechanism and a dividing mechanism. The feeding mechanism is used to convey the VDA joint parts to the conveyor belt in the feeding direction, and the dividing mechanism is used to convey the VDA joint parts with different detection results to different directions.

[0007] Preferably, the clamping head comprises a friction disc and a conical block, one end of the friction disc is fixedly connected to one end of the telescopic rod, the conical block is fixedly mounted on the other end of the friction disc, and the diameter of the bottom of the conical block is smaller than the diameter of the inner hole of the VDA joint part.

[0008] Preferably, support bars are evenly distributed on the outer surface of the conveyor belt, the support bars and the shaft seats are staggered and arranged at equal intervals, and the VDA joint parts are placed between two adjacent support bars.

[0009] Preferably, a support spring is fixedly mounted on an inner wall of one side of the sleeve, and the other end of the support spring is fixedly connected to the telescopic rod.

[0010] Preferably, the workbench is also provided with a roller, a bracket and a driving motor, the roller is respectively connected to the two ends of the conveyor belt, and the two ends of the roller are rotatably connected to the bracket, the bracket is symmetrically arranged on both sides of the conveyor belt, and the bottom of the bracket is fixedly connected to the upper surface of the workbench, the driving motor is fixedly installed on the upper surface of the workbench, and the driving end of the driving motor is connected to the roller, and the driving plate is fixedly installed on the bracket.

[0011] Preferably, the driving plate is fixedly mounted above the bracket, and the driving plate includes an integrally formed inclined portion and a parallel portion, the length direction of the inclined portion is inclined with the conveying direction of the conveyor belt, and the length direction of the parallel portion is parallel to the conveying direction of the conveyor belt, a slide rail is fixedly mounted on one side of the driving plate, a slider is fixedly mounted on one end of the sleeve, and the slider slides in cooperation with the slide rail.

[0012] Preferably, the rotating member includes a gear and a rack, which are fitted and meshed with each other. The gear is sleeved and fixed on the sleeve, and the rack is fixedly installed on the driving plate.

[0013] Preferably, the feeding mechanism includes a base, a rotating plate, a wheel shaft, a rotating wheel and a small motor. The base is fixedly installed on one side of the upper surface of the workbench. One end of the lower surface of the rotating plate is rotatably connected to the top of the base. The wheel shaft is rotatably installed on one side of the base. The rotating wheel is fixedly installed on the wheel shaft, and an annular groove is formed on the outer surface of the rotating wheel. Oval grooves are formed on both side walls of the annular groove. A pushing plate is fixedly installed at the lower end of the rotating plate. Slide bars are fixedly installed at the bottoms of both side surfaces of the pushing plate, and the slide bars are slidably connected to the oval grooves. An inclined baffle is fixedly installed at one end of the rotating plate away from the base. Straight baffles are arranged on the side surfaces of the rotating plate and the inclined baffle. The small motor is fixedly installed inside the box body, and its driving end is in transmission connection with the wheel shaft.

[0014] Preferably, the material distributing mechanism includes a servo motor and a sliding plate. The servo motor is fixedly installed inside the box body. The sliding plate is rotatably installed at the driving end of the servo motor. A waste material interface is arranged on the upper surface of the workbench. The waste material interface is communicated with the lower surface of the workbench and is arranged below one end of the conveyor belt.

[0015] The present invention also discloses a VDA joint detection method based on vision technology, and the specific steps are as follows: Open the box doors on both sides of the upper part of the box body, and correspond the positions of the external feeding equipment and conveying equipment with the positions of the feeding mechanism and the material distributing mechanism; The VDA joint parts fall from the external feeding equipment onto the feeding mechanism, and after being sorted by the feeding mechanism, they fall onto the conveyor belt and move along with the rotation of the conveyor belt; When the VDA joint parts enter the photographing area of the industrial detection camera, the rotating and telescopic components on both sides thereof approach the VDA joint parts, so that the clamping heads clamp both ends of the VDA joint parts; The rotating and telescopic components entering the photographing area of the industrial detection camera drive the VDA joint parts to rotate under the action of the rotating member, so that the industrial detection camera can take photos of different positions on the outer side surface of the VDA joint parts; The industrial detection camera transmits the picture information to the vision detection software in the computer for detection and analysis; The qualified VDA joint parts fall onto the external conveying equipment through the material distributing mechanism for further processing, and the unqualified VDA joint parts are collected through the material distributing mechanism.

[0016] Compared with the prior art, the present invention provides a vision detection device and a VDA joint detection method based on vision technology, and has the following beneficial effects: 1. The visual inspection device, by setting a rotating and telescoping component, a clamping head, and a driving plate, after the VDA connector parts are conveyed by the conveyor belt to the photographing area of the industrial inspection camera, the driving plate pushes the clamping head to move through the rotating and telescoping component, so that the clamping head can clamp the VDA connector parts. With the setting of the rotating component, the clamped VDA connector parts can rotate with the rotating and telescoping component, and the industrial inspection camera can photograph different positions on the outer side of the VDA connector parts, eliminating the need for manual clamping of the VDA connector parts, reducing the labor intensity, and improving the work efficiency.

[0017] 2. The visual inspection device, by setting a sleeve, a telescopic rod, a rotating sleeve, and a telescopic spring, and the driving plate includes an inclined part and a parallel part. When the sleeve moves to a position on the inclined part close to the parallel part, the slider fixed at one end of the sleeve contacts the slide rail fixed on the side of the driving plate, and as the sleeve continues to move, the slide rail can push the slider to move, so that the clamping head clamps the VDA connector parts from the side. At the same time, after the clamping block realizes clamping, the gear fixed on the sleeve also moves to a position in contact with the rack, and as the sleeve continues to move, it can drive the clamping head to rotate, driving the clamped VDA connector parts to rotate, without the need to use an additional power source for driving, which can reduce costs.

[0018] 3. The visual inspection device, by setting a feeding mechanism and a support bar, enables the VDA connector parts falling on the tape to be perpendicular to the tape conveying direction and remain stationary, enabling the clamping head to effectively clamp the VDA connector parts, and also enabling the friction disk to drive the VDA connector parts to rotate along with it when the clamping head rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is one of the three-dimensional structure schematic diagrams of the visual inspection device of the present invention; Figure 2 is the three-dimensional structure schematic diagram of the visual inspection device of the present invention; Figure 3 is of the present invention Figure 2 the partial enlarged schematic diagram at A in; Figure 4 is the three-dimensional structure exploded schematic diagram of the visual inspection device of the present invention; Figure 5 is of the present invention Figure 4 the partial enlarged schematic diagram at B in; Figure 6 is of the present invention Figure 4 the partial enlarged schematic diagram at C in; Figure 7 is of the present invention Figure 4 the partial enlarged schematic diagram at D in; Figure 8This is the second three-dimensional structure schematic diagram of the visual detection device of the present invention.

[0020] In the figure: 1. Box body; 2. Workbench; 21. Scrap interface; 3. Industrial inspection camera; 4. Conveyor belt; 41. Axle seat; 42. Support bar; 43. Roller; 44. Bracket; 45. Driving motor; 5. Loading mechanism; 51. Base; 52. Rotating plate; 53. Wheel axle; 54. Runner; 541. Ring groove; 542. Oval groove; 55. Small motor; 56. Pusher plate; 561. Slide bar; 57. Inclined baffle; 6. Automatic clamping mechanism; 61. Rotary telescopic assembly; 611. Sleeve; 612. Telescopic rod; 613. Rotating sleeve; 614. Telescopic spring; 615. Support spring; 62. Clamping head; 621. Friction disc; 622. Tapered block; 63. Driving plate; 631. Inclined part; 632. Parallel part; 64. Slide rail; 65. Slide block; 7. Rotating part; 71. Gear; 72. Rack; 8. Material distribution mechanism; 81. Servo motor; 82. Slide plate; 9. VDA connector part. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1 Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 , the present invention provides a visual detection device, including a box body 1 and a VDA connector part 9. A workbench 2 is arranged inside the box body 1, and an industrial inspection camera 3 is fixedly installed on the inner top wall of the box body 1. A conveyor belt 4 is installed on the upper surface of the workbench 2, and axle seats 41 are symmetrically and fixedly arranged on both sides of the outer surface of the conveyor belt 4; An automatic clamping mechanism 6 is provided on the conveyor belt 4. The automatic clamping mechanism 6 includes a rotary telescopic assembly 61, a clamping head 62, and a driving plate 63. The rotary telescopic assembly 61 includes a sleeve 611, a telescopic rod 612, a rotating sleeve 613, and a telescopic spring 614. Both ends of the telescopic rod 612 are axially slidably sleeved with the sleeve 611 and the rotating sleeve 613 respectively. The rotating sleeve 613 is rotatably installed on the shaft seat 41. Both ends of the telescopic spring 614 are fixedly connected to one outer wall of the sleeve 611 and one end of the rotating sleeve 613 respectively. The clamping head 62 is fixedly connected to one end of the telescopic rod 612. The driving plates 63 are arranged on both sides of the photographing area of the industrial inspection camera 3 and are used to compress the telescopic spring 614 entering the photographing area of the industrial inspection camera 3, so that the telescopic rod 612 pushes the clamping head 62 to clamp the VDA connector part 9. Rotating components 7 are arranged on both sides of the industrial inspection camera 3, and the rotating components 7 are used to drive the sleeve 611 to rotate. Feeding mechanisms 5 and sorting mechanisms 8 are respectively arranged at both ends of the conveyor belt 4. The feeding mechanism 5 is used to convey the VDA connector parts 9 onto the conveyor belt 4, and the sorting mechanism 8 is used to convey the VDA connector parts 9 with different inspection results in different directions.

[0023] As can be seen from the above, when using this vision inspection device to inspect the VDA connector part 9, the inspection process is as follows: First, open the box doors on both sides of the upper part of the box body 1, and align the positions of the external feeding equipment and conveying equipment with the positions of the feeding mechanism 5 and the sorting mechanism 8; the VDA connector parts 9 fall from the external feeding equipment onto the feeding mechanism 5 in sequence, and after being sorted by the feeding mechanism 5, they fall onto the conveyor belt 4 and move as the conveyor belt 4 rotates; when the VDA connector part 9 enters the photographing area of the industrial inspection camera 3, the clamping head 62 approaches the VDA connector part 9, so that the clamping head 62 clamps both ends of the VDA connector part 9. The rotary telescopic assembly 61 entering the photographing area of the industrial inspection camera 3 drives the VDA connector part 9 to rotate under the action of the rotating component 7, so that the industrial inspection camera 3 can take pictures of different positions on the outer side of the VDA connector part 9; the industrial inspection camera 3 transmits the picture information to the vision inspection software in the computer for inspection and analysis; the qualified VDA connector parts 9 fall onto the external conveying equipment through the sorting mechanism 8 for further processing, and the unqualified VDA connector parts 9 are collected through the sorting mechanism 8.

[0024] Meanwhile, the vision detection device is provided with a rotary telescopic assembly 61, a clamping head 62 and a driving plate 63. After the VDA connector part 9 is conveyed by the conveyor belt 4 to the photographing area of the industrial detection camera 3, the driving plate 63 pushes the clamping head 62 to move through the rotary telescopic assembly 61, so that the clamping head 62 can clamp the VDA connector part 9. With the arrangement of the rotating component 7, the clamped VDA connector part 9 can rotate along with the rotary telescopic assembly 61, and the industrial detection camera 3 can photograph different positions on the outer side of the VDA connector part 9, eliminating the need for manual clamping of the VDA connector part 9, reducing the labor intensity and improving the work efficiency.

[0025] In this embodiment, since the rotary telescopic assembly 61 includes a sleeve 611, a telescopic rod 612, a rotating sleeve 613 and a telescopic spring 614, when the driving plate 63 pushes the sleeve 611, the sleeve 611 approaches the rotating sleeve 613. When the telescopic rod 612 is squeezed at one end inside the sleeve 611, the telescopic rod 612 also slides relative to the rotating sleeve 613, thereby pushing the clamping head 62 fixedly connected to the telescopic rod 612 to move. Since the automatic clamping mechanisms 6 are arranged on both sides of the conveyor belt 4, the clamping heads 62 on both sides can approach the VDA connector part 9 simultaneously, so that the VDA connector part 9 is clamped. When the VDA connector part 9 is clamped, the rotary telescopic assembly 61 can drive the VDA connector part 9 to rotate under the drive of the rotating component 7.

[0026] Embodiment 2 As Figure 2 - Figure 5 shown, the difference between this embodiment and the above embodiment is that the clamping head 62 includes a friction disc 621 and a tapered block 622. One end of the friction disc 621 is fixedly connected to one end of the telescopic rod 612, and the tapered block 622 is fixedly installed at the other end of the friction disc 621, and the diameter of the bottom of the tapered block 622 is smaller than the inner diameter of the VDA connector part 9 As can be seen from the above, when the clamping head 62 clamps the VDA connector part 9, the friction disc 621 closely adheres to the side of the VDA connector part 9 and generates a large frictional force with the VDA connector part 9, so as to be able to drive the VDA connector part 9 to rotate. The arrangement of the tapered block 622 is used to fit with the inner wall of the VDA connector part 9 to improve the fixing effect.

[0027] Support bars 42 are equidistantly distributed on the outer surface of the conveyor belt 4. The support bars 42 and the axle seats 41 are arranged alternately with equal spacing, and the VDA connector part 9 is placed between two adjacent support bars 42.

[0028] As can be seen from the above, by setting the support bars 42, the VDA joint parts 9 that fall onto the conveyor belt 4 and whose axial direction is nearly consistent with the length direction of the support bars 42 can accurately fall between the two support bars 42 after rolling, so that the two ends of the VDA joint parts 9 are oriented opposite to the friction disk 621 and the conical block 622, and because the support bars 42 and the shaft seats 41 are staggered and spaced at equal intervals, the axis of the VDA joint part 9 placed between two adjacent support bars 42 and the axis of the friction disk 621 and the conical block 622 are all on the same vertical plane perpendicular to the conveying direction of the conveyor belt 4.

[0029] A support spring 615 is fixedly mounted on an inner wall of one side of the sleeve 611 , and the other end of the support spring 615 is fixedly connected to the telescopic rod 612 .

[0030] In the present application, since one end of the telescopic rod 612 is slidably connected to the sleeve 611, by providing a support spring 615, when the sleeve 611 moves in the direction of the VDA joint part 9, the support spring 615 pushes the telescopic rod 612 so that the clamping head 62 clamps the VDA joint part 9. When the clamping head 62 is abutted against the VDA joint part 9 and the sleeve 611 continues to move, the clamping pressure of the clamping head 62 on the VDA joint part 9 can be gradually increased, thereby avoiding the situation where the clamping pressure is uncontrollable due to the integral fixation of the sleeve 611 and the telescopic rod 612, thereby avoiding the situation where the VDA joint part 9 cannot rotate with the clamping head 62 due to too loose clamping or the VDA joint part 9 is damaged due to too tight clamping.

[0031] Embodiment 3 like Figure 2 - Figure 6 As shown, the difference between this embodiment and the above embodiment is that a roller 43, a bracket 44 and a drive motor 45 are also provided on the workbench 2, the roller 43 is respectively connected to the two ends inside the conveyor belt 4 in a transmission manner, and the two ends of the roller 43 are rotatably connected to the bracket 44, the bracket 44 is symmetrically arranged on both sides of the conveyor belt 4, and the bottom of the bracket 44 is fixedly connected to the upper surface of the workbench 2, the drive motor 45 is fixedly installed on the upper surface of the workbench 2, and the driving end of the drive motor 45 is connected to the roller 43 in a transmission manner, and the drive plate 63 is fixedly installed on the bracket 44.

[0032] As can be seen from the above, the conveyor belt 4 is rotated under the control of the driving motor 45. Since the driving plate 63 is fixedly mounted on the bracket 44, the driving plate 63 cannot move.

[0033] The driving plate 63 is fixedly installed above the bracket 44, and the driving plate 63 includes an integrally formed inclined portion 631 and a parallel portion 632. The length direction of the inclined portion 631 is inclined with the conveying direction of the conveyor belt 4, and the length direction of the parallel portion 632 is parallel with the conveying direction of the conveyor belt 4. A slide rail 64 is fixedly installed on one side of the driving plate 63, and a slider 65 is fixedly installed on one end of the sleeve 611, and the slider 65 slides with the slide rail 64.

[0034] As can be seen from the above, when the slider 65 moves from one side of the inclined portion 631 to the direction of the parallel portion 632, it gradually approaches the slide rail 64. After the slider 65 contacts the slide rail 64, the slider 65 is restricted by the slide rail 64 when sliding, and is more stable.

[0035] Furthermore, the rotating component 7 includes a gear 71 and a rack 72 . The gear 71 and the rack 72 are adapted to mesh with each other. The gear 71 is sleeved and fixed on the sleeve 611 , and the rack 72 is fixedly mounted on the driving plate 63 .

[0036] As can be seen from the above, by setting the gear 71 and the rack 72, when the sleeve 611 moves to one side of the parallel portion 632, the gear 71 and the rack 72 come into contact, so that the sleeve 611 is driven by the gear 71 to rotate. Due to the setting of the slider 65 and the slide rail 64, the transmission effect between the gear 71 and the rack 72 is more stable, thereby ensuring that the clamping head 62 rotates at a uniform speed.

[0037] Embodiment 4 like Figure 5 and Figure 7 As shown, the difference between this embodiment and the above-mentioned embodiment is that the feeding mechanism 5 includes a base 51, a rotating plate 52, an axle 53, a rotating wheel 54 and a small motor 55. The base 51 is fixedly mounted on one side of the upper surface of the workbench 2, one end of the lower surface of the rotating plate 52 is rotatably connected to the top of the base 51, the axle 53 is rotatably mounted on one side of the base 51, the rotating wheel 54 is fixedly mounted on the axle 53, and an annular groove 541 is provided on the outer surface of the rotating wheel 54, and both side walls of the annular groove 541 are provided with elliptical grooves 542, a push plate 56 is fixedly mounted on the lower end of the rotating plate 52, and sliding rods 561 are fixedly mounted on the bottom of both sides of the pushing plate 56, and the sliding rods 561 are slidably connected to the elliptical grooves 542, an oblique baffle 57 is fixedly mounted on the end of the rotating plate 52 away from the base 51, and straight baffles are provided on the sides of the rotating plate 52 and the oblique baffle 57, and the small motor 55 is fixedly mounted inside the box 1, and its driving end is transmission-connected to the axle 53.

[0038] As described above, when the runner 54 rotates, the elliptical groove 542 rotates around the wheel shaft 53, causing the slide bar 561 slidably connected to the elliptical groove 542 to swing up and down, thereby causing the rotating plate 52 to swing. In cooperation with the setting of the inclined baffle 57, when the end of the rotating plate 52 away from the base 51 swings to near the highest point, the end of the inclined baffle 57 away from the rotating plate 52 tilts upward, so that the VDA connector part 9 cannot fall from the end of the inclined baffle 57 away from the rotating plate 52. When the end of the rotating plate 52 away from the base 51 swings to near the lowest point, the end of the inclined baffle 57 away from the rotating plate 52 tilts downward, and the VDA connector part 9 can stably roll onto the conveyor belt 4. During the rolling of the VDA connector part 9, it will stay and decelerate at the bending part of the rotating plate 52 and the inclined baffle 57, so that the speed of the VDA connector part 9 falling onto the conveyor belt 4 is slower. At the same time, due to the setting of the straight baffle, when the VDA connector part 9 enters the feeding mechanism 5 with both ends facing the straight baffle, it will not tilt during the rolling process.

[0039] The material distribution mechanism 8 includes a servo motor 81 and a slide plate 82. The servo motor 81 is fixedly installed inside the box body 1, and the slide plate 82 is rotatably installed at the driving end of the servo motor 81. A waste interface 21 is provided on the upper surface of the workbench 2. The waste interface 21 communicates with the lower surface of the workbench 2, and the waste interface 21 is provided below one end of the conveyor belt 4.

[0040] As described above, by controlling the servo motor 81, the inclination direction of the slide plate 82 can be changed, so that the VDA connector part 9 slides out of the box body 1 or falls into the waste interface 21. Embodiment 5 Please refer to Figure 1 - Figure 8 , the present invention also discloses a VDA connector detection method based on vision technology, and the specific steps are as follows: Open the box doors on both sides of the upper part of the box body 1, and correspond the positions of the external feeding equipment and conveying equipment with the positions of the feeding mechanism 5 and the material distribution mechanism 8; The VDA connector part 9 falls from the external feeding equipment onto the feeding mechanism 5, and after being sorted by the feeding mechanism 5, it falls onto the conveyor belt 4 and moves as the conveyor belt 4 rotates; When the VDA connector part 9 enters the photographing area of the industrial inspection camera 3, the rotating telescopic components 61 on both sides thereof approach the VDA connector part 9, so that the clamping heads 62 clamp both ends of the VDA connector part 9; The rotating telescopic components 61 entering the photographing area of the industrial inspection camera 3 drive the VDA connector part 9 to rotate under the action of the rotating component 7, so that the industrial inspection camera 3 can take photos of different positions on the outer side of the VDA connector part 9; The industrial inspection camera 3 transmits the picture information to the vision inspection software in the computer for inspection and analysis; The qualified VDA connector parts 9 fall onto the external conveying equipment through the material separating mechanism 8 for further processing, and the unqualified VDA connector parts 9 are collected through the material separating mechanism 8.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device, comprising a box and a VDA joint part, wherein a workbench is provided inside the box, and an industrial inspection camera is fixedly installed on the inner top wall of the box, characterized in that: A conveyor belt is installed on the upper surface of the workbench, and shaft seats are symmetrically fixed on both sides of the outer surface of the conveyor belt; The conveyor belt is provided with an automatic clamping mechanism, which includes a rotating telescopic assembly, a clamping head and a driving plate. The rotating telescopic assembly includes a sleeve, a telescopic rod, a rotating sleeve and a telescopic spring. The two ends of the telescopic rod are respectively axially slidably sleeved with the sleeve and the rotating sleeve. The rotating sleeve is rotatably mounted on the shaft seat. The two ends of the telescopic spring are respectively fixedly connected to the outer wall of one side of the sleeve and one end of the rotating sleeve. The clamping head is fixedly connected to one end of the telescopic rod. The driving plate is arranged on both sides of the photographing area of ​​the industrial detection camera, and is used to compress the telescopic spring entering the photographing area of ​​the industrial detection camera, so that the telescopic rod pushes the clamping head to clamp the VDA joint parts. Rotating components are provided on both sides of the industrial inspection camera, and the rotating components are used to drive the sleeve to rotate; The two ends of the conveyor belt are respectively provided with a feeding mechanism and a dividing mechanism. The feeding mechanism is used to convey the VDA joint parts to the conveyor belt in the feeding direction, and the dividing mechanism is used to convey the VDA joint parts with different detection results to different directions.

2. A visual inspection device according to claim 1, characterized in that: The clamping head includes a friction disc and a conical block, one end of the friction disc is fixedly connected to one end of the telescopic rod, and the conical block is fixedly installed on the other end of the friction disc, and the diameter of the bottom of the conical block is smaller than the diameter of the inner hole of the VDA joint part.

3. A visual inspection device according to claim 1, characterized in that: The outer surface of the conveyor belt is evenly distributed with support bars, the support bars and the shaft seats are staggered and arranged at equal intervals, and the VDA joint parts are placed between two adjacent support bars.

4. A visual inspection device according to claim 1, characterized in that: A support spring is fixedly mounted on an inner wall of one side of the sleeve, and the other end of the support spring is fixedly connected to the telescopic rod.

5. A visual inspection device according to claim 1, characterized in that: The workbench is also provided with a roller, a bracket and a driving motor. The roller is respectively connected to the two ends of the conveyor belt, and the two ends of the roller are rotatably connected to the bracket. The bracket is symmetrically arranged on both sides of the conveyor belt, and the bottom of the bracket is fixedly connected to the upper surface of the workbench. The driving motor is fixedly installed on the upper surface of the workbench, and the driving end of the driving motor is connected to the roller. The driving plate is fixedly installed on the bracket.

6. A visual inspection device according to claim 1, characterized in that: The driving plate is fixedly installed above the bracket, and the driving plate includes an integrally formed inclined portion and a parallel portion. The length direction of the inclined portion is inclined with the conveying direction of the conveyor belt, and the length direction of the parallel portion is parallel with the conveying direction of the conveyor belt. A slide rail is fixedly installed on one side of the driving plate, and a slider is fixedly installed on one end of the sleeve, and the slider slidably cooperates with the slide rail.

7. A visual inspection device according to claim 1, characterized in that: The rotating component comprises a gear and a rack, the gear and the rack are adapted to mesh with each other, the gear is sleeved and fixed on the sleeve, and the rack is fixedly mounted on the driving plate.

8. A visual inspection device according to claim 1, characterized in that: The feeding mechanism includes a base, a rotating plate, an axle, a rotating wheel and a small motor. The base is fixedly mounted on one side of the upper surface of the workbench, one end of the lower surface of the rotating plate is rotatably connected to the top of the base, the axle is rotatably mounted on one side of the base, the rotating wheel is fixedly mounted on the axle, and an annular groove is provided on the outer surface of the rotating wheel, and elliptical grooves are provided on both side walls of the annular groove, a push plate is fixedly mounted on the lower end of the rotating plate, and sliding rods are fixedly mounted on the bottom of both side surfaces of the push plate, and the sliding rods are slidably connected to the elliptical grooves, an inclined baffle is fixedly mounted on the end of the rotating plate away from the base, and straight baffles are provided on the sides of the rotating plate and the inclined baffle, the small motor is fixedly mounted inside the box, and its driving end is transmission-connected to the axle.

9. A visual inspection device according to claim 8, characterized in that: The material dividing mechanism includes a servo motor and a slide plate, the servo motor is fixedly installed inside the box, the slide plate is rotatably installed on the driving end of the servo motor, the upper surface of the workbench is provided with a waste interface, the waste interface is connected with the lower surface of the workbench, and the waste interface is arranged below one end of the conveyor belt.

10. A VDA joint detection method based on vision technology, using a visual detection device as described in any one of claims 1 to 9, characterized in that: The specific steps are: Open the doors on both sides of the upper part of the box body, and match the positions of the external loading equipment and conveying equipment with the positions of the loading mechanism and the dividing mechanism; VDA joint parts fall from the external feeding equipment to the feeding mechanism, and after being sorted by the feeding mechanism, they fall onto the conveyor belt and move with the rotation of the conveyor belt; When the VDA connector part enters the photographing area of ​​the industrial inspection camera, the rotating telescopic components on both sides of the VDA connector part are close to the VDA connector part, so that the clamping head clamps the two ends of the VDA connector part; The rotating telescopic assembly entering the photographing area of ​​the industrial inspection camera drives the VDA joint parts to rotate under the action of the rotating components, so that the industrial inspection camera can take photos of different positions on the outer side of the VDA joint parts; The industrial inspection camera transmits the image information to the visual inspection software in the computer for inspection and analysis; The qualified VDA joint parts are dropped to the external conveying equipment through the material separation mechanism for further processing, and the unqualified VDA joint parts are collected through the material separation mechanism.

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