A guide rail detection system and method based on double-station multi-view imaging

Abstract

The application relates to a guide rail detection system and method based on a double-station multi-view imaging, and relates to the technical field of guide rail detection. The guide rail detection system comprises multiple conveying lines which are arranged on a rack at intervals, and two detection devices. The detection device comprises a lifting frame and a lifting plate which are vertically slidably arranged on the rack and are respectively located between two adjacent conveying lines. A positioning mechanism is slidably arranged in a containing cavity and a through hole and extends upwards above the lifting frame or is retracted into the through hole. A detection mechanism is arranged for detecting the guide rail. A feeding mechanism is arranged for guiding and conveying the guide rail. The guide rail is conveyed by the conveying line and the feeding mechanism, so that the guide rail is aligned with the positioning mechanism and the detection mechanism. The positioning mechanism first positions the guide rail, then pushes the guide rail upwards to separate the guide rail from the conveying line, and then the positioning mechanism moves downwards to release the positioning. The detection mechanism detects the guide rail, thereby improving the product quality control level and the production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of guide rail inspection, and in particular to a guide rail inspection system and method based on dual-station multi-view imaging. Background Technology

[0002] In the field of automated precision manufacturing, guide rails are key basic components of precision mechanical equipment (such as CNC machine tools and industrial robots). Their machining accuracy (such as symmetry, width, depth, hole position, etc.) directly affects the performance and reliability of the whole machine.

[0003] Currently, the industry relies heavily on manual sampling or traditional contact measuring instruments (such as coordinate measuring machines) for dimensional inspection of guide rail parts. Manual sampling is inefficient and subject to human error. While traditional coordinate measuring machines offer high precision, their long cycle time makes it impossible to perform online, real-time full inspection, which is insufficient to meet the needs of modern, efficient production lines. Therefore, there is an urgent need for a high-speed, comprehensive, and automated inspection system to improve product quality control and production efficiency. Summary of the Invention

[0004] In order to enable high-speed, comprehensive and automated inspection of guide rails to improve product quality control and production efficiency, this application provides a guide rail inspection system and method based on dual-station multi-view imaging.

[0005] Firstly, this application provides a guide rail inspection system based on dual-station multi-view imaging, which adopts the following technical solution: A guide rail inspection system based on dual-station multi-view imaging includes multiple conveyor lines spaced apart on a frame and two inspection devices. The two inspection devices alternately inspect the guide rails. Each inspection device includes: The lifting frame and lifting plate are vertically slidably installed on the frame and located between two adjacent conveyor lines. The guide rail passes through the lifting plate and lifting frame in sequence. The lifting frame has a receiving cavity and a through hole communicating with the receiving cavity. The positioning mechanism is slidably disposed in the receiving cavity and the through hole and extends upward to above the lifting frame or retracts into the through hole; The inspection mechanism is set up on the lifting frame and the machine frame and inspects the guide rails from both horizontal and vertical directions; The guide rail moves to the positioning mechanism under the conveyor line's transport action, and the lifting frame and lifting plate move up so that the positioning mechanism extends above the lifting frame and abuts against one end of the guide rail for positioning and pushes the guide rail to disengage from the conveyor line. After the positioning mechanism retracts into the through hole, the detection mechanism starts to detect the guide rail. After the detection is completed, the lifting frame and lifting plate move down to place the guide rail on the conveyor line for transport. The feeding mechanism forms a placement space with the conveyor line that is aligned with the positioning mechanism and is used to guide and transport the guide rail.

[0006] By adopting the above technical solution, the feeding mechanism sequentially places the guide rails into two placement spaces for guiding and conveying, so that the guide rails can be aligned with the positioning mechanism and the detection mechanism. The lifting frame and lifting plate move upward to drive the positioning mechanism to move upward. First, the positioning mechanism is driven to move upward to above the lifting frame. After the guide rails move, they abut against the positioning mechanism for positioning. The lifting frame and lifting plate push the guide rails upward to disengage from the conveyor line. Then, the positioning mechanism moves downward to retract into the through hole to release the positioning mechanism from obstructing the detection mechanism. The detection mechanism starts to detect the guide rails. After the detection is completed, the lifting frame and lifting plate move downward to place the guide rails onto the conveyor line. The guide rails can then move forward directly under the driving action of the conveyor line.

[0007] By using a conveyor line and feeding mechanism in conjunction with a guide rail, the guide rail is aligned with the positioning and detection mechanisms, making the detection more accurate. The positioning mechanism first positions the guide rail, then pushes it upward to separate it from the conveyor line. At this point, the guide rail is positioned by gravity, and the positioning mechanism moves downward to release the positioning, exposing the entire guide rail. This allows the detection mechanism to perform more comprehensive and accurate detection of the guide rail, resulting in faster, more comprehensive, and higher-precision detection.

[0008] Simultaneously, one detection device is activated to move the guide rail upward for detection, while another detection device detects the guide rail and then moves it downward to place it on the conveyor line for transport. The two detection devices alternately detect the guide rail, which greatly saves the time spent on guide rail detection. It enables high-speed, comprehensive and automatic detection of guide rails, improving product quality control and production efficiency.

[0009] Optionally, the lower surfaces of the lifting frame and the lifting plate are connected to each other via a connecting frame, and the positioning mechanism includes: The movable plate is vertically slidably mounted on the receiving cavity; The positioning block is set on the upper surface of the moving plate and is vertically slidably installed on the through hole and abuts against the end face of the guide rail for positioning; An elastic element is provided in the receiving cavity and the moving plate and pushes the moving plate to maintain an upward tendency; A linkage component is installed on the lifting frame and connected to the moving plate; after the lifting frame moves upward, it pushes the guide rail to disengage from the conveyor line, causing the positioning block to retract into the through hole; when the lifting frame moves downward, it first drives the positioning block to move upward and then drives the positioning block to retract into the through hole.

[0010] By adopting the above technical solution, the lifting frame and the lifting plate can move simultaneously through the connecting frame. The lifting frame moves upward by the linkage component, first driving the positioning block to move above the lifting frame, and then causing the positioning block to move above the conveyor line. After the guide rail moves, it abuts against the positioning block for positioning. If the lifting frame and the lifting plate continue to move upward, the guide rail will be lifted upward and disengaged from the conveyor line. If the lifting frame continues to move upward, the positioning block will be driven to retract into the through hole. The movement of the lifting frame and the lifting plate will stop, and the detection mechanism will perform detection.

[0011] After the inspection is completed, the lifting frame and lifting plate move down, and the positioning block moves up first to position the guide rail. Then, the guide rail is placed on the conveyor line. The lifting frame continues to move down, driving the positioning block to retract into the through hole. The guide rail moves forward under the action of the conveyor line. Compared with the drive structure, the linkage component, as a mechanical structure, can more stably and accurately position and release the obstruction of the guide rail, improving the inspection effect and efficiency, thereby improving the product quality control level and production efficiency.

[0012] Optionally, the linkage component includes: The fixed block is set on the moving plate; The movable rod is horizontally slidably set on the lifting frame and has a movable surface that is in contact with each other and inclined at the end opposite to the fixed block; The linkage block is set on the frame and has two linkage sections 1 and 2 arranged vertically and connected to each other. The two linkage sections 1 are located on the upper and lower sides of the linkage section 2, respectively. The linkage wheel is rotatably mounted on the end of the moving rod near the linkage block. When the lifting frame moves to its highest point and to its lowest point, the linkage wheel abuts against the first linkage section and pushes the positioning block back into the through hole. When the linkage wheel abuts against the second linkage section, the positioning block moves up to above the lifting frame under the elastic force of the elastic element.

[0013] By adopting the above technical solution, the lifting frame moves simultaneously, driving the moving plate, the fixed block, the moving rod and the linkage wheel. The linkage wheel rolls on either the first or the second linkage section. When the linkage wheel abuts against the first linkage section, it pushes the positioning block back into the through hole. When the linkage wheel abuts against the second linkage section, the positioning block moves upward to the top of the lifting frame under the elastic force of the elastic element.

[0014] The linkage component enables the positioning block to retract into the through hole to release the obstruction when the guide rail moves to its highest position; and after the lifting frame moves down, the positioning block moves downward relative to the lifting frame to unlock the guide rail. The lifting frame does not need to move down a long distance to disengage the guide rail from the positioning block for unlocking, which greatly reduces the movement range of the lifting frame and saves time, thereby improving product quality control and production efficiency at the same time.

[0015] Optionally, the linkage block is slidably mounted on the frame, and a positioning screw that presses against the frame for positioning is threaded onto the linkage block.

[0016] By adopting the above technical solution, the position of the linkage block can be moved after the positioning screw is loosened. After the movement is completed, the positioning screw is turned to press against the frame for positioning, thereby adjusting the position of linkage section one and linkage section two, thus realizing the control of the positioning block movement at different positions, making the range of adaptation wider.

[0017] Optionally, it also includes a lifting mechanism connected to the two connecting frames, the lifting mechanism comprising: The lifting rod is rotatably mounted on the frame via a pivot and extends to two connecting frames at both ends, with two lifting holes along its length. Two lifting columns are mounted on two connecting frames and slidably installed on two lifting holes respectively; Drive assembly, used to drive the lifting rod to rotate.

[0018] By adopting the above technical solution, the drive component drives the lifting rod to rotate, and the rotation of the lifting rod drives the two lifting columns and the two connecting frames to move vertically. This enables the two detection devices to alternately detect the guide rail, making the detection process more stable and faster. At the same time, the gravity of the guide rail located at the lower position can position the guide rail located at the higher position, thereby greatly reducing the torque on the drive component. Therefore, it can greatly improve the stability and efficiency during operation, and improve the product quality control level and production efficiency.

[0019] Optionally, the driving component includes: Drive components are used to drive the rotating shaft to rotate; Two stops are set on the lower surface of both ends of the lifting rod; Two locking blocks are set on the frame and correspond to two stop blocks. The lifting rod rotates to drive the stop blocks to contact the locking blocks and is positioned by the locking blocks.

[0020] By adopting the above technical solution, the driving component starts the rotating shaft and lifting rod to rotate. The rotation of the lifting rod drives the two stop blocks to rotate, so that the stop block located at the lower position abuts against the corresponding locking block for positioning. When the lifting rod needs to rotate, the locking block unlocks, and the driving component starts the lifting rod to rotate. This further reduces the torque on the driving component, further improves the stability during operation, and improves the product quality control level and production efficiency.

[0021] Optionally, both locking blocks are electromagnets and are alternately energized to attract and position the stop blocks.

[0022] By adopting the above technical solution, the electromagnet is energized to attract and position the stop block. When rotation is required, the electromagnet at the lower position is de-energized and another electromagnet is energized. Therefore, when the driving component drives the lifting rod to rotate, it drives the stop block at the higher position to rotate downward and approach the energized electromagnet. The electromagnet can generate an attraction force on the stop block, making the stop block more quickly and stably attracted to the electromagnet for positioning. This makes the lifting rod rotate faster and more stably, improving the product quality control level and production efficiency.

[0023] Optionally, the testing organization includes: The inspection frame is mounted on the machine frame and extends above the conveyor line; Camera 1 is mounted on the lifting frame and located on the side of the positioning block away from the lifting plate, and is used to detect the guide rail in the horizontal direction. Camera 2 is mounted on the inspection frame and is used to inspect the guide rail vertically downwards; A distance detector is installed on the detection frame and is used to detect the distance between the guide rail and the second camera.

[0024] By adopting the above technical solution, camera one detects the guide rail from the side along the horizontal direction, and camera two detects the guide rail vertically downwards, thereby realizing the detection of the guide rail size. At the same time, the distance detector can control the distance between camera two and the guide rail. In addition, the positioning block positions one end of the guide rail, so that both camera one and camera two are kept at the optimal distance from the guide rail, thereby improving the product quality control level and production efficiency.

[0025] Optionally, the feeding mechanism includes: Two partitions are set on the frame and above the conveyor line, forming a placement space in conjunction with the conveyor line; Two guide plates, arranged in a figure-eight shape, are placed on one end of two partition plates and are used to guide the guide rail into the placement space.

[0026] By adopting the above technical solution, the robot arm sequentially places the guide rails onto the conveyor line, corresponding to the two placement spaces. The conveyor line drives the guide rails to move, and the two guide plates guide the guide rails into the placement spaces for transport, so that the guide rails are aligned with the positioning mechanism, thereby enabling the guide rails to be moved to the positioning mechanism for positioning, thus realizing the transport and positioning of the guide rails.

[0027] Secondly, the detection method provided in this application adopts the following technical solution: A method includes the following steps: Feeding: The feeding mechanism places the guide rails on the conveyor line for conveying and aligns them with the two detection devices respectively; Lifting and Inspection: The lifting frame and lifting plate move upward, one end of the guide rail first abuts against the positioning mechanism for positioning, then the guide rail is disengaged from the conveyor line, the positioning mechanism moves downward, and the inspection mechanism starts to inspect the guide rail; after the inspection is completed, the lifting frame and lifting plate move downward, the positioning mechanism moves upward first, the guide rail is placed on the conveyor line, the positioning mechanism moves downward and disengages from the guide rail, and the guide rail moves forward under the action of the conveyor line, thus completing the lifting and inspection of the guide rail.

[0028] By adopting the above technical solution, the feeding mechanism places the guide rail on the conveyor line for conveying and aligns it with the two detection devices respectively; the lifting frame and lifting plate move up, one end of the guide rail first abuts against the positioning mechanism for positioning, and then the guide rail is separated from the conveyor line. The positioning mechanism moves down, and the detection mechanism starts to detect the guide rail; after the detection is completed, the lifting frame and lifting plate move down, the positioning mechanism moves up first, the guide rail is placed on the conveyor line, the positioning mechanism moves down and separates from the guide rail, and the guide rail moves forward under the action of the conveyor line, thereby completing the lifting and detection of the guide rail, improving the product quality control level and production efficiency.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a conveyor line and feeding mechanism in conjunction with a guide rail, the guide rail is aligned with the positioning and detection mechanisms, resulting in more accurate detection. The positioning mechanism first positions the guide rail, then pushes it upward to detach it from the conveyor line. At this point, the guide rail is positioned by gravity, and the positioning mechanism moves downward to release the positioning, exposing the entire guide rail. This allows the detection mechanism to perform more comprehensive and accurate detection of the guide rail, resulting in faster, more comprehensive, and higher-precision detection, thus improving product quality control and production efficiency.

[0030] 2. The linkage component enables the positioning block to retract into the through hole to release the obstruction when the guide rail moves to its highest position; and after the lifting frame moves down, the positioning block moves downward relative to the lifting frame to unlock the guide rail. The lifting frame does not need to move down a long distance to disengage the guide rail from the positioning block for unlocking, which greatly reduces the movement range of the lifting frame and saves time, thereby improving product quality control and production efficiency.

[0031] 3. The lifting rod is driven to rotate by the drive assembly. The rotation of the lifting rod drives the two lifting columns and the two connecting frames to move vertically, so that the two detection devices can alternately detect the guide rail. This makes the detection process more stable and faster. At the same time, the gravity of the guide rail located at the lower position can help position the guide rail located at the higher position, thereby greatly reducing the torque on the drive assembly. Therefore, it can greatly improve the stability and efficiency during operation, and improve the level of product quality control and production efficiency. Attached Figure Description

[0032] Figure 1This is a three-dimensional structural diagram of the guide rail detection system; Figure 2 This is a partial structural diagram of the guide rail detection system; Figure 3 This is a schematic diagram of the detection device in the guide rail detection system; Figure 4 This is a partial structural diagram of the detection device in the guide rail detection system; Reference numerals: 1. Frame; 11. Conveyor line; 12. Guide rail; 13. Fixing plate; 2. Detection device; 21. Lifting frame; 211. Receiving cavity; 22. Lifting plate; 23. Guide block; 24. Connecting frame; 25. Through hole; 3. Positioning mechanism; 31. Moving plate; 32. Positioning block; 33. Elastic element; 4. Linkage assembly; 41. Fixing block; 42. Moving rod; 421. Moving surface; 43. Linkage block; 44. Linkage wheel; 45. Linkage section one; 46. Linkage section two; 5. Detection mechanism; 51. Detection frame; 52. Camera one; 53. Camera two; 54. Distance detector; 6. Feeding mechanism; 61. Separator plate; 62. Guide plate; 7. Lifting mechanism; 71. Lifting rod; 72. Lifting column; 73. Lifting hole; 8. Drive assembly; 81. Drive element; 82. Stop block; 83. Locking block. Detailed Implementation

[0033] The following provides a further detailed description of this application.

[0034] This application discloses a guide rail detection system and method based on dual-station multi-view imaging.

[0035] Reference Figure 1 The guide rail inspection system based on dual-station multi-view imaging includes multiple conveyor lines 11 spaced apart on the frame 1 and two inspection devices 2. The conveyor lines 11 are horizontally arranged and convey the guide rail 12 along its length. The conveyor lines 11 adopt the structure of the prior art, which will not be described in detail here. The two inspection devices 2 are spaced apart along the direction perpendicular to the length of the guide rail 12, and the two inspection devices 2 form two inspection stations. The two inspection stations alternately inspect the guide rail 12.

[0036] The frame 1 and the guide rail 12 are parallel in length direction. Multiple sets of fixing plates 13 are fixedly installed at intervals along the length direction on the upper surface of the frame 1. Each set of fixing plates 13 has two plates at intervals along the width direction of the frame 1. Multiple conveyor lines 11 are set on multiple sets of fixing plates 13.

[0037] Reference Figures 1-4The detection device 2 includes a lifting frame 21 and a lifting plate 22, two guide blocks 23, a positioning mechanism 3, a detection mechanism 5, a feeding mechanism 6, and a lifting mechanism 7. The lifting frame 21 and the lifting plate 22 are spaced apart along the length of the guide rail 12. The guide rail 12 moves sequentially through the lifting plate 22 and the lifting frame 21. The lifting frame 21 and the lifting plate 22 are located between two adjacent conveyor lines 11 and are both vertically slidably mounted on the fixed plate 13. The lower surfaces of the lifting frame 21 and the lifting plate 22 are fixedly connected by a connecting frame 24, which passes under the conveyor line 11. The two guide blocks 23 are spaced apart along the length of the guide rail 12 and are fixedly mounted on the upper surface of the lifting plate 22, and are always positioned against the opposite side walls of the guide rail 12.

[0038] The lifting mechanism 7 is connected to two connecting frames 24 and is used to drive the two connecting frames 24 to move simultaneously, so that one connecting frame 24 moves vertically upward and the other connecting frame 24 moves vertically downward; the lifting frame 21 has a receiving cavity 211, and the upper surface has a through hole 25 that communicates vertically with the receiving cavity 211; the positioning mechanism 3 is vertically slidably disposed on the receiving cavity 211 and the through hole 25; the detection mechanism 5 is disposed on the lifting frame 21 and the frame 1, and detects the guide rail 12 from both horizontal and vertical directions.

[0039] The guide rail 12 moves to the positioning mechanism 3 under the conveying action of the conveyor line 11. The positioning mechanism 3 extends above the lifting frame 21, and one end of the guide rail 12 abuts against the positioning mechanism 3 for positioning. The lifting frame 21 and the lifting plate 22 move upward to push the guide rail 12 away from the conveyor line 11. The positioning mechanism 3 moves downward and retracts into the through hole 25 and unlocks the guide rail 12. The detection mechanism 5 starts to detect the guide rail 12. After the detection is completed, the lifting frame 21 and the lifting plate 22 move downward to place the guide rail 12 on the conveyor line 11 for conveying. The feeding mechanism 6 forms a placement space aligned with the positioning mechanism 3 between itself and the conveyor line 11, and places the guide rail 12 into the placement space for conveying.

[0040] The lifting mechanism 7 includes a lifting rod 71, two lifting columns 72, and a drive assembly 8. A horizontal rotating shaft is rotatably mounted on the surface of the frame 1. The middle part of the lifting rod 71 is fixedly mounted on the rotating shaft, and both ends of the lifting rod 71 extend to the two connecting frames 24 respectively. At the same time, lifting holes 73 are opened at both ends of the lifting rod 71 along its own length. The two lifting columns 72 are fixedly mounted on the two connecting frames 24 and slidably mounted on the two lifting holes 73 respectively. The rotation of the lifting rod 71 drives the two connecting frames 24 to move simultaneously, so that one connecting frame 24 moves vertically upward and the other connecting frame 24 moves vertically downward.

[0041] The drive assembly 8 is used to drive the rotating shaft to rotate. The drive assembly 8 includes a drive component 81, two stops 82 and two locking blocks 83. The drive component 81 is a motor. The drive component 81 is fixedly installed on the frame 1 and its output shaft is coaxially connected to the rotating shaft. The drive component 81 starts to drive the rotating shaft and the lifting rod 71 to rotate. The two stops 82 are fixedly installed on the lower surfaces of both ends of the lifting rod 71 and are made of metal. The locking blocks 83 are fixedly installed on the upper surface of the frame 1 and are set corresponding to the two stops 82. After the lifting rod 71 rotates and drives the stops 82 to contact the locking blocks 83, the locking blocks 83 adsorb and position the stops 82.

[0042] The locking block 83 is an electromagnet, and the two locking blocks 83 are energized alternately, that is, when one locking block 83 is energized, the other locking block 83 is de-energized; when the lifting rod 71 needs to rotate, the locking block 83 that is attached to the stop block 82 is de-energized to unlock, and the other locking block 83 is energized; the driving component 81 starts to drive the lifting rod 71 and the stop block 82 to rotate. As the stop block 82 approaches the locking block 83, the stop block 82 enters the attraction range of the locking block 83, so that the stop block 82 is quickly and stably attached to the locking block 83, thereby achieving the positioning of the lifting rod 71, thus enabling the stable and rapid driving of the two connecting frames 24 to move, and the movement of the connecting frames 24 drives the positioning mechanism 3 connected to them to move.

[0043] The feeding mechanism 6 includes two partition plates 61 and two guide plates 62. A support rod extending above the conveyor line 11 is fixedly installed on the frame 1. The two partition plates 61 are spaced apart along the length direction perpendicular to the guide rail 12. The partition plates 61 and the guide rail 12 are parallel in the length direction. The two partition plates 61 and the conveyor line 11 cooperate to form a placement space for placing the guide rail 12 and guiding and positioning the guide rail 12.

[0044] Two guide plates 62 are fixedly installed on the two partition plates 61 at the ends opposite to the positioning mechanism 3, and the two guide plates 62 are in a figure-eight shape. The distance between the two guide plates 62 near the two ends of the partition plate 61 is smaller than the distance between the two ends opposite to the partition plate 61. The robot places the two guide rails 12 on the conveyor line 11 in sequence, and aligns them with the two placement spaces respectively. If they are not aligned, the two guide plates 62 guide the guide rails 12 into the placement space for alignment before conveying them, so that the two guide rails 12 are aligned with the two positioning mechanisms 3 respectively. Then the guide rails 12 move to the two guide blocks 23, and the two guide blocks 23 abut against the opposite side walls of the guide rails 12, so as to cooperate with the feeding mechanism 6 to guide and convey the guide rails 12.

[0045] The positioning mechanism 3 includes a movable plate 31, a positioning block 32, an elastic element 33, and a linkage assembly 4. The movable plate 31 is vertically slidably installed in the receiving cavity 211. The positioning block 32 is fixedly installed on the upper surface of the movable plate 31 and vertically slidably installed on the through hole 25. When the positioning block 32 extends above the lifting frame 21, the guide rail 12 moves and one end abuts against the positioning block 32 for positioning. The elastic element 33 is a spring or a sheet spring. The bottom end of the elastic element 33 is fixedly installed on the bottom of the receiving cavity 211, and the top end of the elastic element 33 is fixedly installed on the lower surface of the movable plate 31 for positioning. The elastic element 33 pushes the movable plate 31 and the positioning block 32 to maintain an upward movement trend.

[0046] The linkage component 4 is slidably mounted on the connecting frame 24 and connected to the moving plate 31. The lifting plate 22 and the lifting frame 21 move upward simultaneously. The upward movement of the lifting frame 21 drives the positioning block 32 to extend above the lifting frame 21. The guide rail 12 approaches the positioning block 32 and one end abuts against the positioning block 32 for positioning. The lifting frame 21 and the lifting plate 22 continue to move upward, first pushing the guide rail 12 to disengage from the conveyor line 11, and then driving the positioning block 32 to move downward and retract into the through hole 25, thereby unlocking the guide rail 12. The detection mechanism 5 starts to detect the guide rail 12, so that the positioning block 32 will not form an obstruction when the detection mechanism 5 is detecting, thus improving the detection accuracy and efficiency of the detection mechanism 5.

[0047] After the inspection is completed, the lifting frame 21 moves down, driving the guide rail 12 and the positioning block 32 to move down. First, the positioning block 32 is driven to extend above the lifting frame 21, so that the guide rail 12 is placed on the conveyor line 11. The lifting frame 21 and the positioning block 32 continue to move down. Through the linkage component 4, the positioning block 32 moves down relative to the lifting frame 21. The positioning block 32 is driven to move down and retract into the through hole 25. The guide rail 12 moves forward under the driving action of the conveyor line 11, thus completing the inspection of the guide rail 12. Then the inspection is repeated.

[0048] The linkage assembly 4 includes a fixed block 41, a moving rod 42, a linkage block 43, and a linkage wheel 44. The fixed block 41 is fixedly installed on the side wall of the moving plate 31. The moving rod 42 is horizontally slidably installed on the outer side wall of the lifting frame 21 and extends into the receiving cavity 211 and to one side of the fixed block 41. The moving rod 42 and the fixed block 41 have inclined and mutually fitting moving surfaces 421 at opposite ends. The moving rod 42 pushes the fixed block 41, the moving plate 31, and the positioning block 32 downward as it approaches the fixed block 41. The linkage block 43 is vertical and is vertically slidably installed on the side wall of the fixed plate 13. The moving rod 42 is located between the linkage block 43 and the fixed block 41. The linkage block 43 is threadedly connected to a positioning screw that presses against the fixed plate 13 for positioning.

[0049] On the side wall of the linkage block 43 near the moving rod 42, there are two vertically spaced linkage segments 1 45 and linkage segment 2 46. Both linkage segments 1 45 and linkage segment 2 46 are vertical. Linkage segment 2 46 is located between the two linkage segments 1 45. Linkage segment 1 45 is located on the side of linkage segment 2 46 near the moving rod 42. The connection points of linkage segments 1 45 and linkage segment 2 46 are connected to each other by inclined connecting segments.

[0050] The linkage wheel 44 is rotatably mounted on the end of the moving rod 42 near the linkage block 43. When the linkage wheel 44 abuts against the first linkage section 45, the moving rod 42 pushes the positioning block 32 and the positioning block 32 retract into the through hole 25. When the linkage wheel 44 abuts against the second linkage section 46, the positioning block 32 moves upward to the top of the lifting frame 21 under the elastic force of the elastic element 33, which is used to position the guide rail 12. At the same time, the connecting section facilitates the movement of the linkage wheel 44 between the first linkage section 45 and the second linkage section 46.

[0051] In the initial state, the lifting frame 21 and the lifting plate 22 are located below the upper surface of the conveyor line 11, the linkage wheel 44 abuts against the linkage section 45 located at the lower position, and the top of the positioning block 32 retracts into the through hole 25; the connecting frame 24 moves upward to drive the lifting frame 21, the moving rod 42, the linkage wheel 44, the elastic element 33, the moving plate 31, and the positioning block 32 to move upward, and at the same time the linkage wheel 44 rolls onto the linkage section 46 for positioning, so that the positioning block 32 moves upward above the lifting frame 21 and the conveyor line 11.

[0052] Guide rail 12 is conveyed by conveyor line 11, causing one end of guide rail 12 to abut against positioning block 32 for positioning. Then, lifting frame 21 and lifting plate 22 contact guide rail 12 and push guide rail 12 upward above conveyor line 11. Connecting frame 24 continues to move upward, causing linkage wheel 44 to roll onto linkage section 45 located at a higher position, thereby causing the top of positioning block 32 to retract into through hole 25, thus unlocking guide rail 12 without obstructing detection mechanism 5.

[0053] The detection mechanism 5 includes a detection frame 51, a first camera 52, a second camera 53, and a distance detector 54. The detection frame 51 is fixedly mounted on the fixed plate 13 and extends above the conveyor line 11. The first camera 52 is fixedly mounted on the upper surface of the lifting frame 21 and is located on the side of the positioning block 32 away from the lifting plate 22. The first camera 52 faces the guide rail 12 and illuminates and detects the guide rail 12 from a horizontal direction. The second camera 53 is fixedly mounted on the detection frame 51 and illuminates and detects the guide rail 12 vertically downwards, thereby realizing the detection of the guide rail 12 in both horizontal and vertical directions. The distance detector 54 is fixedly mounted on the detection frame 51 and is used to detect the distance between the second camera and the guide rail 12. The distance detector 54 is electrically connected to the control room, and the control room controls the start and stop of the drive unit 81, thereby maintaining a suitable distance between the guide rail 12 and the second camera 53, facilitating the second camera 53 to detect the guide rail 12 and improving the detection accuracy.

[0054] The working principle of this application embodiment is as follows: The robot places the guide rail 12 onto the conveyor line 11 in sequence and aligns it with the two placement spaces respectively. The guide rail 12 is guided and conveyed under the guidance of the guide plate 62 and the partition plate 61. The guide rail 12 is aligned with the positioning mechanism 3 and the detection mechanism 5. The drive component 8 starts to drive the lifting frame 21 and the lifting plate 22 to move upward, so that the positioning block 32 first moves upward to above the lifting frame 21. Then the lifting frame 21 and the lifting plate 22 move upward to push the guide rail 12 to disengage from the conveyor line 11. Then the positioning block 32 retracts into the through hole 25. Camera 1 52 and Camera 2 53 start to detect the guide rail 12.

[0055] After the inspection is completed, the lifting frame 21 and the lifting plate 22 move down, and the positioning block 32 moves up and abuts against the guide rail 12 for positioning. Then the guide rail 12 is placed on the conveyor line 11, and the positioning block 32 retracts into the through hole 25. The guide rail 12 continues to move forward under the action of the conveyor line 11, thereby realizing the inspection of the guide rail 12. At the same time, two inspection devices 2 form two inspection stations. The two inspection stations alternately inspect the guide rail 12, which can perform high-speed, comprehensive and automatic inspection of the guide rail 12, thereby improving the product quality control level and production efficiency.

[0056] This application discloses a detection method.

[0057] Reference Figures 1-4 The detection method includes the following steps: Feeding: The feeding mechanism 6 places the guide rail 12 on the conveyor line 11 for conveying and aligns it with the two detection devices 2 respectively; Lifting and Inspection: The lifting frame 21 and lifting plate 22 move upward, one end of the guide rail 12 first abuts against the positioning mechanism 3 for positioning, and then the guide rail 12 is disengaged from the conveyor line 11. The positioning mechanism 3 moves downward, and the inspection mechanism 5 starts to inspect the guide rail 12. After the inspection is completed, the lifting frame 21 and lifting plate 22 move downward, the positioning mechanism 3 moves upward first, the guide rail 12 is placed on the conveyor line 11, the positioning mechanism 3 moves downward and disengages from the guide rail 12, and the guide rail 12 moves forward under the action of the conveyor line 11, thereby completing the lifting and inspection of the guide rail 12.

[0058] The working principle of this application embodiment is as follows: The feeding mechanism 6 places the guide rail 12 on the conveyor line 11 for conveying and aligns it with the two detection devices 2 respectively; the lifting frame 21 and the lifting plate 22 move upward, one end of the guide rail 12 first abuts against the positioning mechanism 3 for positioning, and then the guide rail 12 is disengaged from the conveyor line 11. The positioning mechanism 3 moves downward, and the detection mechanism 5 starts to detect the guide rail 12; after the detection is completed, the lifting frame 21 and the lifting plate 22 move downward, the positioning mechanism 3 moves upward first, the guide rail 12 is placed on the conveyor line 11, the positioning mechanism 3 moves downward and disengages from the guide rail 12, and the guide rail 12 moves forward under the action of the conveyor line 11, thereby completing the lifting and detection of the guide rail 12, thereby improving the product quality control level and production efficiency.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A guide rail inspection system based on dual-station multi-view imaging, characterized in that: It includes multiple conveyor lines (11) spaced apart on the frame (1) and two detection devices (2). The two detection devices (2) alternately perform detection on the guide rail (12). The detection device (2) includes: The lifting frame (21) and the lifting plate (22) are vertically slidably mounted on the frame (1) and located between two adjacent conveyor lines (11). The guide rail (12) passes through the lifting plate (22) and the lifting frame (21) in sequence. The lifting frame (21) is provided with a receiving cavity (211) and a through hole (25) communicating with the receiving cavity (211). The lower surfaces of the lifting frame (21) and the lifting plate (22) are connected to each other through a connecting frame (24). The positioning mechanism (3) is slidably disposed in the receiving cavity (211) and the through hole (25) and extends upward to above the lifting frame (21) or retracts into the through hole (25); the positioning mechanism (3) includes a moving plate (31), a positioning block (32), an elastic element (33), and a linkage assembly (4); the moving plate (31) is vertically slidably disposed on the receiving cavity (211); the positioning block (32) is disposed on the upper surface of the moving plate (31) and vertically slidably disposed on the through hole (25) and abuts against the end face of the guide rail (12) for positioning; the elastic element (33) is disposed on the receiving cavity (211) and the moving plate (31) and pushes the moving plate (31) to maintain an upward trend; the linkage assembly (4) is disposed on the lifting frame (21) and is connected to the lifting frame (21) and is connected to the lifting frame (25). The movable plate (31) is connected; the linkage component (4) includes a fixed block (41), a movable rod (42), a linkage block (43), and a linkage wheel (44); the fixed block (41) is set on the movable plate (31); the movable rod (42) is horizontally slidably set on the lifting frame (21) and has a movable surface (421) that is mutually attached and inclined at the end opposite to the fixed block (41); the linkage block (43) is set on the frame (1) and has two vertically arranged and interconnected linkage sections one (45) and two linkage sections two (46), the two linkage sections one (45) being located on the upper and lower sides of the linkage section two (46); the linkage wheel (44) is rotatably set on the end of the movable rod (42) near the linkage block (43); The testing mechanism (5) is set on the lifting frame (21) and the frame (1) and tests the guide rail (12) from both horizontal and vertical directions; The lifting mechanism (7), connected to two connecting frames (24), includes a lifting rod (71), two lifting columns (72), and a drive assembly (8); the lifting rod (71) is rotatably mounted on the frame (1) via a rotating shaft and extends to the two connecting frames (24) at both ends, with two lifting holes (73) opened along its own length; the two lifting columns (72) are arranged on the two connecting frames (24) and are slidably mounted on the two lifting holes (73); the drive assembly (8) is used to drive the lifting rod (71) to rotate; The guide rail (12) moves to the positioning mechanism (3) under the conveying action of the conveyor line (11), and the lifting frame (21) and lifting plate (22) move upward so that the positioning mechanism (3) extends above the lifting frame (21) and abuts against one end of the guide rail (12) for positioning and pushes the guide rail (12) to disengage from the conveyor line (11). After the positioning mechanism (3) retracts into the through hole (25), the detection mechanism (5) starts to detect the guide rail (12). After the detection is completed, the lifting frame (21) and lifting plate (22) move downward to place the guide rail (12) into the through hole (25). The lifting frame (21) is placed on the conveyor line (11) for conveying; when the lifting frame (21) moves to its highest point and moves to its lowest point, the linkage wheel (44) abuts against the first linkage section (45) and pushes the positioning block (32) back into the through hole (25); when the linkage wheel (44) abuts against the second linkage section (46), the positioning block (32) moves up to above the lifting frame (21) under the elastic force of the elastic element (33); when the lifting frame (21) moves down, it first drives the positioning block (32) to move up and then drives the positioning block (32) back into the through hole (25); The feeding mechanism (6) forms a placement space with the conveyor line (11) that is aligned with the positioning mechanism (3) and is used to guide and convey the guide rail (12).

2. The guide rail inspection system based on dual-station multi-view imaging according to claim 1, characterized in that: The linkage block (43) is slidably mounted on the frame (1), and a positioning screw that presses against the frame (1) for positioning is threaded onto the linkage block (43).

3. The guide rail inspection system based on dual-station multi-view imaging according to claim 1, characterized in that: The drive assembly (8) includes: a drive component (81) for driving the rotating shaft to rotate; two stops (82) disposed on the lower surfaces of both ends of the lifting rod (71); and two locking blocks (83) disposed on the frame (1) and corresponding to the two stops (82). The lifting rod (71) rotates to drive the stops (82) to contact the locking blocks (83) and be positioned by the locking blocks (83).

4. The guide rail detection system based on dual-station multi-view imaging according to claim 3, characterized in that: Both locking blocks (83) are electromagnets and are alternately energized to attract and position the stop block (82).

5. The guide rail inspection system based on dual-station multi-view imaging according to claim 1, characterized in that: The detection mechanism (5) includes: a detection frame (51), which is set on the frame (1) and extends above the conveyor line (11); a camera (52), which is set on the lifting frame (21) and located on the side of the positioning block (32) away from the lifting plate (22) and is used to detect the guide rail (12) in the horizontal direction; a camera (53), which is set on the detection frame (51) and is used to detect the guide rail (12) vertically downward; and a distance detector (54), which is set on the detection frame (51) and is used to detect the distance between the guide rail (12) and the camera (53).

6. The guide rail inspection system based on dual-station multi-view imaging according to claim 1, characterized in that: The feeding mechanism (6) includes: two partition plates (61), which are set on the frame (1) and located above the conveyor line (11) and cooperate with the conveyor line (11) to form a placement space; and two guide plates (62), which are set on one end of the two partition plates (61) and are in a figure-eight shape and are used to guide the guide rail (12) into the placement space.

7. A detection method applied to the detection system according to any one of claims 1-6, characterized in that: Includes the following steps: Feeding: The feeding mechanism (6) places the guide rail (12) on the conveyor line (11) for conveying and aligns it with the two detection devices (2) respectively; Lifting and Inspection: The lifting frame (21) and lifting plate (22) move upward, and one end of the guide rail (12) first abuts against the positioning mechanism (3) for positioning. Then the guide rail (12) is separated from the conveyor line (11), the positioning mechanism (3) moves downward, and the inspection mechanism (5) starts to inspect the guide rail (12). After the inspection is completed, the lifting frame (21) and lifting plate (22) move downward, the positioning mechanism (3) moves upward first, the guide rail (12) is placed on the conveyor line (11), the positioning mechanism (3) moves downward and separates from the guide rail (12), and the guide rail (12) moves forward under the action of the conveyor line (11) to complete the lifting and inspection of the guide rail (12).

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