Frame multi-surface visual inspection equipment

Abstract

The utility model discloses a multi-surface visual inspection device for a frame. The multi-surface visual inspection device comprises a feeding conveying line, an end detection station, a multi-surface detection station and a waste discharge output station, wherein the end detection station, the multi-surface detection station and the waste discharge output station are sequentially arranged along the feeding conveying line; an end visual detection module is arranged at the end detection station; the multi-face detection station is provided with a turnover mechanism for clamping the two ends of the frame to turn over and a plurality of first cameras located above the feeding conveying line. According to the utility model, all-around defect detection can be carried out on the frame, and the detection efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of frame defect detection equipment, and particularly relates to a multi-faceted visual detection equipment for frames. Background Technique

[0002] Strip-shaped profiles are applied to many products, such as window frames, photovoltaic module frames, and board edge frames. Currently, there is a frame for photovoltaic modules that needs to detect the defects on its outer peripheral surface before stacking after production to prevent defective products from being applied to subsequent photovoltaic modules. The traditional frame surface defect detection is carried out by manual visual inspection, which has low efficiency and there are missed inspection situations.

[0003] In the prior art, patent CN108357896A discloses a flipping mechanism and a detection equipment for the surface of profiles. In order to realize the automatic detection of defects on multiple surfaces of the frame, a plurality of flipping mechanisms are arranged side by side to cooperate with the conveying mechanism to realize the position switching between four detection stations of the frame, and the flipping mechanism is used to realize the automatic flipping of the frame. A plurality of cameras are arranged at each of the four detection stations. In this detection equipment, the number of cameras is relatively large, increasing the cost, and there are many detection stations, which makes the length of the whole detection equipment longer, the overall volume of the equipment increases, and only a single frame can be detected at each detection station, so the detection efficiency needs to be improved.

[0004] Therefore, it is necessary to provide a new multi-faceted visual detection equipment for frames to solve the above technical problems. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a multi-faceted visual detection equipment for frames, which can perform all-round defect detection on the frame with high detection efficiency.

[0006] The utility model realizes the above purpose through the following technical solutions: A multi-faceted visual detection equipment for frames, which includes a feeding conveyor, an end detection station, a multi-faceted detection station and a waste discharging and output station arranged in sequence along the feeding conveyor; an end visual detection module is arranged at the end detection station; a flipping mechanism for clamping both ends of the frame and flipping it and a plurality of first cameras located above the feeding conveyor are arranged at the multi-faceted detection station.

[0007] Further, the end visual detection module includes a second camera located on the side of the end of the frame, a third camera located above the end of the frame, and a fourth camera located below the end of the frame; a first stop module for ensuring the stable position of the frame at the end detection station is also arranged at the end detection station.

[0008] Further, a rectifying station is arranged upstream of the end detection station, and a rectifying mechanism and a material blocking mechanism for ensuring that only one frame is input to the end detection station each time are arranged at the rectifying station.

[0009] Further, the material blocking mechanism includes a third stopping module that blocks the frame on the loading conveyor line at the first frame position, a first sensor for detecting whether there is a frame at the first frame position, a second sensor for detecting whether there is a frame at the second frame position, a material blocking plate located above the second frame position or above the junction of the first frame position and the second frame position, and a first air cylinder that drives the material blocking plate to move downward when both the first sensor and the second sensor sense signals. The first frame position coincides with the rectifying station or is located upstream of the rectifying station, and the second frame position is adjacent to the first frame position and is located on the upstream side of the first frame position.

[0010] Further, a plurality of frame bearing positions are arranged in the multi-faceted detection station section, and a second stopping module is arranged at the multi-faceted detection station; the second stopping module includes a third air cylinder, a first support plate driven by the third air cylinder to move up and down, and a plurality of blocking blocks arranged on the first support plate and distributed corresponding to each frame bearing position; a fourth sensor for detecting the presence or absence of a frame is arranged at each frame bearing position.

[0011] Further, the flipping mechanism includes two first sub-modules, which are oppositely arranged on both sides of the loading conveyor line; the first sub-module includes a first motor, a second support plate driven by the first motor to move perpendicular to the loading conveyor line, a second motor fixed on the second support plate, a third support plate driven by the second motor to move up and down, a plurality of first frame clamping components rotatably arranged on the third support plate, and a third motor fixed on the third support plate and driving the first frame clamping components to rotate around a horizontal axis.

[0012] Further, the first frame clamping component is rotatably arranged on the third support plate through a horizontal rotating shaft, a driven gear is arranged on the horizontal rotating shaft, a driving gear is arranged at the rotating end of the third motor, and a rack extending along the conveying direction of the loading conveyor line is horizontally slidably arranged on the third support plate. The driven gear and the driving gear are both meshed with the rack.

[0013] Further, a material receiving and transfer mechanism is provided at the waste discharging and output station, which receives a set of frames on the turning mechanism at the multi-faceted inspection station and then moves to the waste discharging and output station, and a transition conveyor line that receives the qualified frames on the material receiving and transfer mechanism and outputs them to the next workstation; the material receiving and transfer mechanism includes a fourth motor, a second bracket driven by the fourth motor to move between the multi-faceted inspection station and the waste discharging and output station, and a number of frame cavities provided on the second bracket.

[0014] Further, the second bracket includes a connecting beam extending perpendicular to the direction of the feeding conveyor line and a pair of support rods perpendicular to the connecting beam. One end of the support rod is fixed on the connecting beam and the other end projects out. A number of limiting blocks are provided on the support rod, and the frame cavities are formed between adjacent two limiting blocks; the height of the support rod at the multi-faceted inspection station is higher than the height of the feeding conveyor line; either the transition conveyor line or the material receiving and transfer mechanism is configured with a lifting function.

[0015] Further, a waste removing and handling mechanism is provided at the waste discharging and output station to remove defective products on the material receiving and transfer mechanism; a waste discharging and output line is provided in the upper space on the output side of the transition conveyor line; the waste removing and handling mechanism includes a fifth motor, a fourth support plate driven by the fifth motor to move parallel to the feeding conveyor line, a sixth motor fixed on the fourth support plate, a fifth support plate driven by the sixth motor to move up and down, and a number of second frame clamping assemblies provided on the fifth support plate.

[0016] Compared with the prior art, the beneficial effects of a multi-faceted vision inspection device for frames of the present utility model are as follows: it can perform all-round defect detection on the frames, improve production efficiency, and meet the process requirements. Specifically:

[0017] (1) By providing a feeding conveyor line, continuous input of the frames is realized. An end vision inspection module and vision cameras for middle section inspection are arranged along the feeding conveyor line. The end vision inspection module realizes defect detection of each set surface in the end area of the frame, and a turning mechanism is provided at the middle section inspection station. The turning mechanism is used to realize multi-faceted turning of the frame and cooperate with multiple first cameras in the middle section to realize defect detection of multiple set surfaces in the middle section of the frame, and further can realize multi-surface defect detection of the entire length section of the frame, ensuring product quality;

[0018] (2) By using the material receiving and transferring mechanism in cooperation with the transition conveyor line, after the flipping mechanism lifts the frame to be detected to the detection height, the subsequent group of frames to be detected can enter the multi-faceted detection station. After the multi-faceted detection is completed, during the descent of the flipping mechanism, the detected frame can be transferred to the material receiving and transferring mechanism, and then transported by the material receiving and transferring mechanism to the waste discharging station. After waste discharging, it is output to the subsequent workstations. The flipping mechanism descends to the material taking height to clamp the next group of frames to be detected and then lifts them to the detection height for multi-faceted detection. This process saves the input time for the next group of frames to be detected to enter the multi-faceted detection station, greatly improving the detection output efficiency of the frame; Description of the Drawings

[0019] Figure 1 Structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 Structural schematic diagram of the stop structure arranged on both sides of the feeding conveyor line in an embodiment of the present utility model;

[0021] Figure 3 Partial structural schematic diagram of the material blocking mechanism in an embodiment of the present utility model;

[0022] Figure 4 Structural schematic diagram of the end vision detection module and the flipping mechanism in an embodiment of the present utility model;

[0023] Figure 5 Structural schematic diagram of the flipping mechanism in an embodiment of the present utility model;

[0024] Figure 6 Three-dimensional structural schematic diagram of the transition conveyor line section in an embodiment of the present utility model;

[0025] Figure 7 Side view structural schematic diagram of the transition conveyor line section in an embodiment of the present utility model;

[0026] The numbers in the figures represent:

[0027] 100 - Frame multi-faceted vision detection device;

[0028] 200 - Frame;

[0029] 1 - Alignment mechanism, 11 - Second cylinder, 12 - Alignment block, 13 - Slide rail;

[0030] 2 - Material blocking mechanism, 21 - Third stop module, 22 - First sensor, 23 - Second sensor, 24 - Material blocking plate, 25 - First cylinder;

[0031] 3 - End vision detection module, 31 - Second camera, 32 - Third camera, 33 - Fourth camera, 34 - First bracket;

[0032] 4 - First gear stop module, 41 - Third sensor;

[0033] 5 - Flipping mechanism, 51 - First motor, 52 - Second support plate, 53 - Second motor, 54 - Third support plate, 55 - First frame clamping assembly, 56 - Third motor, 57 - Driven gear, 58 - Driving gear, 59 - Rack;

[0034] 6 - First camera;

[0035] 7 - Second gear stop module, 71 - Third cylinder, 72 - First support plate, 73 - Blocking block, 74 - Fourth sensor;

[0036] 8 - Transition conveyor line, 81 - Lifting mechanism;

[0037] 9 - Scrap removal and handling mechanism, 91 - Fifth motor, 92 - Fourth support plate, 93 - Sixth motor, 94 - Fifth support plate, 95 - Second frame clamping assembly;

[0038] 10 - Material receiving and transfer mechanism, 101 - Fourth motor, 102 - Second bracket, 1021 - Connecting beam, 1022 - Support rod, 103 - Frame cavity, 104 - Limit partition;

[0039] 20 - Waste discharge output line; 30 - Loading conveyor line. Specific implementation mode

[0040] Example 1:

[0041] Please refer to Figures 1 - 7, this embodiment is a multi-faceted vision inspection device 100 for a frame, which includes a feeding conveyor line 30, an alignment station, an end detection station, a multi-faceted detection station, and a waste discharging and output station arranged in sequence along the conveying direction of the feeding conveyor line 30. Among them, the alignment station, the end detection station, and the multi-faceted detection station are arranged in the conveying section of the feeding conveyor line 30, and the waste discharging and output station is arranged on the conveying end side of the feeding conveyor line 30; an alignment mechanism 1 is arranged at the alignment station, and a material blocking mechanism 2 is provided to ensure that only one frame is input to the end detection station each time; an end vision detection module 3 and a first stop module 4 for ensuring the stable position of the frame at the end detection station are arranged at the end detection station; a flipping mechanism 5 for clamping both ends of the frame and flipping it, several first cameras 6 located above the feeding conveyor line 30 and with an image acquisition range covering the entire length area of the frame, and a second stop module 7 for positioning and blocking a group of frames at the multi-faceted detection station are arranged at the multi-faceted detection station; a transition conveyor line 8 connected to the feeding conveyor line 30 and a waste removal and handling mechanism 9 located above the transition conveyor line 8 are arranged at the waste discharging and output station; a material receiving and transfer mechanism 10 is movably arranged between the multi-faceted detection station and the waste discharging and output station.

[0042] The material blocking mechanism 2 includes a third stop module 21 that blocks the frame on the feeding conveyor line 30 at the first frame position, a first sensor 22 for detecting whether there is a frame at the first frame position, a second sensor 23 for detecting whether there is a frame at the second frame position, a material blocking plate 24 located above the second frame position or above the junction of the first frame position and the second frame position, and a first air cylinder 25 that drives the material blocking plate 24 to move downward when both the first sensor 22 and the second sensor 23 sense signals. The first frame position coincides with the alignment station or is located upstream of the alignment station, and the second frame position is adjacent to the first frame position and is located upstream of the first frame position.

[0043] The alignment mechanism 1 includes a pair of second air cylinders 11 located on both sides of the feeding conveyor line 30 and an alignment block 12 driven by the second air cylinders 11 to move perpendicular to the feeding conveyor line 30. If the first frame position coincides with the alignment station, the alignment mechanism 1 aligns the frame at the first frame position. If the first frame position is located upstream of the alignment station, the alignment mechanism 1 aligns both ends of the frame 4 at the alignment station downstream of the first frame position, and at the alignment station, a stop module and a sensor for detecting whether the frame is in place are configured. In this embodiment, the first frame position coincides with the alignment station.

[0044] The feeding conveyor line 30 continuously inputs the frames. The input frames are first blocked by the third stop module 21 in the material blocking mechanism 2. When the first sensor 22 detects a frame signal and the second sensor 23 does not detect a frame signal, the baffle 24 still remains at a high position; when both the first sensor 22 and the second sensor 23 detect a frame signal, the baffle 24 drops to a low position to block the frame at the second frame position, ensuring that only one frame is fed into the end detection station each time; after the first sensor 22 detects a frame signal, two alignment blocks 12 extend simultaneously to align the two ends of the frame 200, providing a position accuracy basis for the subsequent visual inspection of the frame ends.

[0045] After the frame 200 is aligned, it is fed into the end detection station and blocked by the first stop module 4. A third sensor 41 for detecting whether the frame is in place is also provided at the end detection station. The end vision detection module 3 includes a second camera 31 located on the side of the frame end, a third camera 32 located above the frame end, and a fourth camera 33 located below the frame end. Defect detection is performed on the outer side of the frame end and the inner side of the bottom plate by the three cameras in three directions simultaneously.

[0046] A number of frame bearing positions are provided at the multi-surface detection station. The second stop module 7 includes a third cylinder 71, a first support plate 72 driven by the third cylinder 71 to move up and down, and a number of blocking blocks 73 provided on the first support plate 72 and distributed corresponding to each frame bearing position. A fourth sensor 74 is provided at each frame bearing position. After the frame completes the end defect detection, it is conveyed to the multi-surface detection station by the feeding conveyor line 30. When the fourth sensor 74 at each frame bearing position detects a frame, the second stop module 7 rises, and the blocking blocks 73 are used to limit the position of the frames at each frame bearing position. Then the feeding conveyor line 30 is conveyed forward by a set distance, so that each frame realizes the position alignment of a set number of frames only by relying on the blocking blocks 73, so that the subsequent flipping mechanism 5 can accurately clamp and flip the set number of frames as a whole, and cooperate with the first camera 6 to perform multi-surface defect detection on the main section of the frame length.

[0047] The flipping mechanism 5 includes two first sub-modules, which are oppositely arranged on both sides of the loading conveyor line 30; the first sub-module includes a first motor 51, a second support plate 52 driven by the first motor 51 to move perpendicular to the loading conveyor line 30, a second motor 53 fixed on the second support plate 52, a third support plate 54 driven by the second motor 53 to move up and down, a plurality of first frame clamping assemblies 55 rotatably arranged on the third support plate 54 and corresponding to each of the frame bearing positions, and a third motor 56 fixed on the third support plate 54 and driving the first frame clamping assemblies 55 to rotate around a horizontal axis.

[0048] In this embodiment, the first frame clamping assembly 55 is rotatably arranged on the third support plate 54 through a horizontal rotating shaft. A driven gear 57 is arranged on the horizontal rotating shaft, a driving gear 58 is arranged at the rotating end of the third motor 56, and a rack 59 extending along the conveying direction of the loading conveyor line 30 is horizontally slidably arranged on the third support plate 54. The driven gear 57 and the driving gear 58 are both meshed with the rack 59. By driving the driving gear 58 to rotate by the third motor 56, the rack 59 is further driven to horizontally slide, and then the driven gear 57 is driven to rotate, so that the first frame clamping assembly 55 can clamp both ends of the frame and perform multi-angle flipping movements.

[0049] In other embodiments, the first frame clamping assembly 55 can also be rotatably arranged on the third support plate 54 through a horizontal rotating shaft. A synchronous pulley is arranged on the horizontal rotating shaft and connected to the rotating end of the third motor 56 through a synchronous belt to achieve rotational transmission.

[0050] In order to improve the versatility of the equipment in this embodiment and make it applicable to the vision inspection and palletizing of frames with various different length specifications, all the cameras in the end vision inspection module 3 are arranged on a first bracket 34. The first bracket 34 is connected to the second support plate 52. Driven by the first motor 51, the end vision inspection module 3 moves horizontally synchronously with the first frame clamping assembly 55. On the one hand, the position is automatically adjusted according to the frame length specification, and on the other hand, the position is switched between the initial position and the working position.

[0051] At the same time, the alignment mechanism 1 is integrally slidably arranged on a slide rail 13 and is locked and fixed by a locking member after the position is adjusted. When the frame length specification changes, the position of the alignment mechanism 1 can also be flexibly adjusted.

[0052] Under normal circumstances, the flip mechanism 5 clamps a group of frames on the feeding conveyor line 30 and lifts them to the detection height position. After the detection is completed, they need to be put back on the feeding conveyor line 30, and then transported out by the feeding conveyor line 30. At the same time, the next group of frames gradually enters the multi-faceted detection station. If a group of frames needs to enter the multi-faceted detection station area, the feeding conveyor line 30 needs to move multiple times with a set time interval and equal steps, which is very time-consuming, and then the next group of frames can be detected. However, if the above conventional settings are followed, there will be a long waiting time between the detection of the previous group of frames and the detection of the next group of frames, resulting in low efficiency.

[0053] In order to save the time for the next group of frames to gradually enter the multi-faceted inspection station, the present embodiment is provided with a transition conveyor line 8 and a material receiving and transferring mechanism 10. The material receiving and transferring mechanism 10 is mainly used to receive a group of frames on the flip mechanism 5 at the multi-faceted inspection station, and then move to the waste discharge output station, and after the waste removal and handling mechanism 9 discharges the waste, the frames are transferred to the transition conveyor line 8, and the transition conveyor line 8 transports the qualified frames to the subsequent workstation.

[0054] The material receiving and transferring mechanism 10 includes a fourth motor 101, a second bracket 102 driven by the fourth motor 101 to move between the multi-faceted inspection station and the waste discharge output station, and a plurality of frame hole grooves 103 arranged on the second bracket 102. In order to ensure that the second bracket 102 enters the multi-faceted inspection station to receive the frame group on the flipping mechanism 5 without affecting the frame on the feeding conveyor line 30 entering the multi-faceted inspection station area, the second bracket 102 is optimized in the present embodiment. The second bracket 102 includes a connecting beam 1021 extending perpendicularly to the direction of the feeding conveyor line 30 and a pair of support rods 1022 arranged perpendicularly to the connecting beam 1021. One end of the support rod 1022 is fixed to the connecting beam 1021 and the other end is cantilevered. A plurality of limit spacers 104 are arranged on the support rod 1022. Two adjacent limit spacers are arranged on the support rod 1022. A frame hole groove 103 is formed between the spacer blocks 104; the height of the support rod 1022 at the multi-sided inspection station is higher than the height of the loading conveyor line 30, so that when the support rod 1022 takes over the frame at the multi-sided inspection station, the next group of frames can be transported to the multi-sided inspection station area through the loading conveyor line 30 at the same time; after the support rod 1022 takes over the frame and moves it to the waste discharge output station, the flipping mechanism 5 can be lowered to the height position of the loading conveyor line 30, clamp the next group of frames and lift them up to the inspection height for multi-sided defect inspection, thereby eliminating the waiting time for the input of the next group of frames and improving the production rhythm.

[0055] In order to transfer the frame between the material receiving and transferring mechanism 10 and the transition conveying line 8, in this embodiment, the transition conveying line 8 is arranged on a lifting mechanism 81. After the material receiving and transferring mechanism 10 carries the frame and moves to the waste discharging and outputting station, the lifting mechanism 81 drives the transition conveying line 8 to rise and lift the frame on the material receiving and transferring mechanism 10. Then, the material receiving and transferring mechanism 10 moves to the multi-faceted inspection station, and the transition conveying line 8 descends to the output height position to output the frame. In other embodiments, a lifting mechanism can also be configured on the material receiving and transferring mechanism 10. For example, if the second bracket 102 is arranged on this lifting mechanism, the frame can also be transferred to the transition conveying line 8 by the descent of the second bracket 102. After the transition conveying line 8 sends away the frame, the second bracket 102 rises to a high position and then horizontally moves to the multi-faceted inspection station. For example, in another embodiment, the material receiving and transferring mechanism 10 includes a fourth motor 101, a third bracket (not marked in the figure) driven by the fourth motor 101 to move between the multi-faceted inspection station and the waste discharging and outputting station, a fourth cylinder (not marked in the figure) fixed on the third bracket, a second bracket 102 driven by the fourth cylinder to move up and down, and a plurality of frame cavities 103 arranged on the second bracket 102.

[0056] To improve the production beat, it is preferred to configure the lifting mechanism on the transition conveying line 8. After the transition conveying line 8 rises to lift the frame, the material receiving and transferring mechanism 10 can horizontally transfer to the multi-faceted inspection station to receive the next group of frames without waiting for the transition conveying line 8 to complete the frame output task.

[0057] Above the output side of the transition conveying line 8, there is a waste discharging and outputting line 20. The waste removing and handling mechanism 9 includes a fifth motor 91, a fourth support plate 92 driven by the fifth motor 91 to move parallel to the feeding conveying line 30, a sixth motor 93 fixed on the fourth support plate 92, a fifth support plate 94 driven by the sixth motor 93 to move up and down, and a plurality of second frame clamping components 95 arranged on the fifth support plate 94. At the waste discharging and outputting station, the waste removing and handling mechanism 9 clamps out the unqualified frames on the second bracket 102 and then places them on the waste discharging conveying line 20 to achieve the waste removing operation.

[0058] The working process of a multi-faceted visual inspection device 100 for a frame in this embodiment is as follows: The input end of the feeding conveyor 30 continuously inputs frames 200. When the frame 200 reaches the alignment station, it is stopped by the material blocking mechanism 2, and the positions of both ends of the frame are aligned by the alignment mechanism 1. Then, when it reaches the end detection station, it is stopped by the first stop module 4, and multiple cameras in the end vision detection module 3 perform defect detection on multiple set surfaces at the end. After that, when it reaches the multi-faceted detection station, after a set number of frames are in place at the multi-faceted detection station, it is stopped by the second stop module 7. The flipping mechanism 5 clamps both ends of a group of frames, rises to the detection height position, and uses multiple first cameras 6 to detect the middle section of the frame. After each surface is inspected, the flipping mechanism 5 clamps both ends of the frame and flips it by 90° to perform defect detection on the next surface until all set surfaces are detected. During the multi-faceted detection process, the material receiving and transfer mechanism 10 horizontally moves below the flipping mechanism 5 and is also located above the feeding conveyor 30. After the detection is completed, the flipping mechanism 5 descends, transfers a group of frames to the material receiving and transfer mechanism 10. After the material receiving and transfer mechanism 10 receives the frames, it horizontally moves to the waste discharging and output station. The flipping mechanism 5 continues to descend to the material taking height position, clamps the next group of frames to be detected, rises to the detection height position, and performs the next round of detection. When the material receiving and transfer mechanism 10 reaches the waste discharging and output station, the waste removing and handling mechanism 9 takes out the unqualified frames according to the detection results and places them on the waste discharging output line 20. The qualified frames continue to be retained on the material receiving and transfer mechanism 10. Then, the transition conveyor 8 rises to receive the qualified frames, and the material receiving and transfer mechanism 10 returns to the multi-faceted detection station again to receive the next group of detected frames. After the transition conveyor 8 receives the qualified frames, it descends to the output height position and conveys the qualified frames to the next workstation.

[0059] For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A multi-faceted visual inspection device for a frame, characterized in that: It includes a loading conveyor line, an end detection station, a multi-faceted detection station and a waste discharge output station which are sequentially arranged along the loading conveyor line; the end detection station is provided with an end visual detection module; the multi-faceted detection station is provided with a flipping mechanism for flipping the two ends of the clamping frame and a plurality of first cameras located above the loading conveyor line.

2. The frame multi-faceted visual inspection device according to claim 1, characterized in that: The end visual inspection module includes a second camera located on the side of the frame end, a third camera located above the frame end, and a fourth camera located below the frame end; the end inspection station is also provided with a first stop module to ensure that the frame is in a stable position at the end inspection station.

3. The frame multi-faceted visual inspection device according to claim 1, characterized in that: A return station is arranged upstream of the end detection station, and a return mechanism and a material blocking mechanism are arranged at the return station to ensure that only one frame is input into the end detection station at a time.

4. The frame multi-faceted visual inspection device according to claim 3, characterized in that: The material blocking mechanism includes a third stop module that blocks the frame on the loading conveyor line at the first frame position, a first sensor that detects whether there is a frame at the first frame position, a second sensor that detects whether there is a frame at the second frame position, a material blocking plate located above the second frame position or above the junction of the first frame position and the second frame position, and a first cylinder that drives the material blocking plate to move downward when both the first sensor and the second sensor sense signals, the first frame position coincides with the return station or is located upstream of the return station, and the second frame position is adjacent to the first frame position and is located on the upstream side of the first frame position.

5. The frame multi-faceted visual inspection device according to claim 1, characterized in that: A plurality of frame bearing positions are arranged in the multi-sided inspection station section, and a second stop module is arranged at the multi-sided inspection station; the second stop module includes a third cylinder, a first support plate driven by the third cylinder to move up and down, and a plurality of blocking blocks arranged on the first support plate and distributed corresponding to each of the frame bearing positions; a fourth sensor for detecting the presence or absence of a frame is arranged at each of the frame bearing positions.

6. The frame multi-faceted visual inspection device according to claim 1, characterized in that: The flipping mechanism includes two first sub-modules, which are relatively arranged on both sides of the loading conveyor line; the first sub-module includes a first motor, a second support plate driven by the first motor to move perpendicular to the loading conveyor line, a second motor fixed on the second support plate, a third support plate driven by the second motor to move up and down, a plurality of first frame clamping assemblies rotatably arranged on the third support plate, and a third motor fixed on the third support plate and driving the first frame clamping assemblies to rotate around a horizontal axis.

7. The frame multi-faceted visual inspection device according to claim 6, characterized in that: The first frame clamping assembly is rotatably arranged on the third support plate via a horizontal rotating shaft, a driven gear is arranged on the horizontal rotating shaft, a driving gear is arranged on the rotating end of the third motor, a rack extending along the conveying direction of the feeding conveyor line is horizontally slidably arranged on the third support plate, and the driven gear and the driving gear are both meshed with the rack.

8. The frame multi-faceted visual inspection device according to claim 1, characterized in that: The waste discharge output station is provided with a material receiving and transferring mechanism which receives a group of frames on the flipping mechanism at the multi-sided inspection station and then moves them to the waste discharge output station, and a transition conveyor line which receives qualified frames on the material receiving and transferring mechanism and outputs them to the next station; the material receiving and transferring mechanism includes a fourth motor, a second bracket driven by the fourth motor to move between the multi-sided inspection station and the waste discharge output station, and a plurality of frame hole grooves arranged on the second bracket.

9. The frame multi-faceted visual inspection device according to claim 8, characterized in that: The second bracket includes a connecting beam extending perpendicularly to the direction of the loading conveyor line and a pair of support rods arranged perpendicularly to the connecting beam, one end of the support rod is fixed on the connecting beam and the other end is cantilevered out, a plurality of limiting spacers are arranged on the support rod, and the frame hole groove is formed between two adjacent limiting spacers; the height of the support rod at the multi-faceted inspection station is higher than the height of the loading conveyor line; either the transition conveyor line or the material receiving and transferring mechanism is configured with a lifting function.

10. The frame multi-faceted visual inspection device according to claim 8, characterized in that: A waste rejection and transport mechanism for removing defective products from the material receiving and transferring mechanism is arranged at the waste discharge output station; a waste discharge output line is arranged in the upper space on the output side of the transition conveyor line; the waste rejection and transport mechanism includes a fifth motor, a fourth support plate driven by the fifth motor to move parallel to the loading conveyor line, a sixth motor fixed on the fourth support plate, a fifth support plate driven by the sixth motor to move up and down, and a plurality of second frame clamping assemblies arranged on the fifth support plate.

Images