Hub blank defect sorting equipment based on machine vision

Abstract

The invention discloses hub blank defect sorting equipment based on machine vision, and relates to the technical field of hub detection.The hub blank defect sorting equipment comprises a conveying mechanism, a detection mechanism, an illumination mechanism, an adjusting mechanism, a cleaning mechanism and a lifting mechanism, the detection mechanism is arranged at the top end of the conveying mechanism, and the illumination mechanism is arranged outside the detection mechanism; the adjusting mechanism is arranged at the top end of the illumination mechanism, the cleaning mechanism is arranged at the bottom end of the detection mechanism, and the lifting mechanism is arranged in the middle of the conveying mechanism. According to the automatic sorting device for the hubs, the hubs on the conveying mechanism are visually detected through the detection mechanism, and after detection is completed, the conveying path of the conveying mechanism is adjusted through the lifting mechanism, so that automatic sorting after the hubs are detected is completed, the working convenience is improved, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wheel hub inspection technology, and in particular to a wheel hub blank defect sorting device based on machine vision. Background Technology

[0002] With the rapid development of the automotive industry, wheel hubs, as a key component of vehicles, have their manufacturing quality directly affecting driving safety and performance.

[0003] In the wheel hub production process, defects such as cracks, porosity, inclusions, and deformation may exist after the blanks are cast or forged. Traditional manual inspection methods are inefficient, subjective, and prone to missed or false detections due to fatigue, making it difficult to meet the high precision and efficiency requirements of modern intelligent manufacturing. Moreover, the lighting methods of traditional vision inspection systems are limited and cannot adapt to the needs of wheel hub defect detection. Uneven light distribution can easily lead to misjudgments. Furthermore, sorting mechanisms often use a single conveyor path and lack dynamic adjustment capabilities, making it impossible to achieve efficient separation of qualified and defective products, which affects the production line cycle time. Therefore, we propose a wheel hub blank defect sorting equipment based on machine vision. Summary of the Invention

[0004] The purpose of this invention is to provide a machine vision-based wheel hub blank defect sorting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a machine vision-based wheel hub blank defect sorting device, comprising: Conveying mechanism; A testing mechanism is located at the top of the conveying mechanism; A lighting mechanism, wherein the lighting mechanism is disposed outside the detection mechanism; An adjustment mechanism is provided at the top of the lighting mechanism; A cleaning mechanism is located at the bottom of the detection mechanism; A lifting mechanism is located in the middle of the conveying mechanism.

[0006] Preferably, the conveying mechanism includes: The first electric conveyor roller, wherein the detection mechanism is disposed at the top of the first electric conveyor roller; The second electric conveyor roller, and the lifting mechanism is connected to the second electric conveyor roller; The fourth electric conveyor roller has a third electric conveyor roller fixedly connected to its top end. The lifting mechanism is used to move the second electric conveyor roller and align it with the third and fourth electric conveyor rollers.

[0007] Preferably, the lifting mechanism includes: A base, with a top seat provided on top of the base; A fixed plate is symmetrically fixedly connected between the base and the top seat, and the second electric conveying roller is slidably disposed between the two fixed plates; The slider is symmetrically fixedly connected to both sides of the second electric conveying roller. A groove is provided on one side of the fixed plate, and the outer wall of the slider is slidably connected to the inner wall of the groove.

[0008] Preferably, a first lead screw is rotatably connected to the inner wall of the slide, a threaded hole is provided at the top of the slider, the outer wall of the first lead screw is threadedly connected to the inner wall of the threaded hole, a first servo motor is installed at the top of the top seat, the output end of the first servo motor is drivenly connected to the top of one of the first lead screws, and a synchronization mechanism is provided inside the base.

[0009] Preferably, the synchronization mechanism includes: The movable cavity is located inside the base, and the bottom end of the first lead screw passes through the top end of the base and is rotatably connected to the bottom end of the inner wall of the movable cavity. A sprocket, which is fixedly sleeved on the end of the first lead screw and located inside the movable cavity; A chain, the chain drive being connected between two sprockets.

[0010] Preferably, the outer wall of the fixing plate is provided with a plurality of ball holes, and a rolling ball is movably engaged on the inner wall of the ball holes, with the outer wall of the rolling ball fitting against the inner wall of the sliding groove.

[0011] Preferably, the testing organization includes: A fixing frame is fixedly connected to the top end of the first electric conveyor roller; A connecting block is disposed inside the fixing frame, and the lighting mechanism is disposed on the outer wall of the connecting block; A visual camera, which is mounted at the bottom of the connecting block; A glass cover is fixedly connected to the bottom end of the connecting block.

[0012] Preferably, the lighting mechanism includes: A connecting frame, which is fixedly connected to the outer wall of the connecting block in a circular array; An illumination lamp has a rotating groove at its top, and rotating shafts are symmetrically fixed to the outer wall of the illumination lamp. The rotating shafts are rotatably connected to the inner wall of the rotating groove, and the adjustment mechanism is located at the top of the illumination lamp.

[0013] Preferably, the adjustment mechanism includes: A movable cover is disposed above the connecting block, and the outer wall of the movable cover has a frustum-shaped inclined surface. The cleaning mechanism is disposed at the bottom end of the movable cover. The roller is symmetrically fixed to the top of the illumination lamp with connecting plates, and the roller is rotatably connected between the two connecting plates; The second lead screw is rotatably connected between the fixed frame and the connecting block; An internally threaded tube is fixedly inserted into the top of the movable cover, and the outer wall of the second lead screw is threadedly connected to the inner wall of the internally threaded tube. The second servo motor is mounted on the top of the fixed frame, and the output end of the second servo motor is connected to the top of the second lead screw. A fixed rod is fixedly connected between the bottom end of the fixed frame and the top end of the connecting block. The top end of the movable cover has a movable hole, and the fixed rod is inserted into the inner wall of the movable hole.

[0014] Preferably, the cleaning mechanism includes: A fixed tube is fixedly connected to the outer wall of the connecting block, and an exhaust hole is provided at the end of the fixed tube; A piston block, wherein the piston block is disposed on the inner wall of the fixed tube; A connecting rod, the bottom end of which is fixedly connected to the top end of the piston block, and the top end of which is fixedly connected to the top end of the inner wall of the movable cover.

[0015] Compared with the prior art, the technical effects of the present invention are as follows: This invention uses a detection mechanism to visually inspect the wheel hubs on the conveying mechanism. After the inspection is completed, the conveying path of the conveying mechanism is adjusted by a lifting mechanism, thereby completing the automatic sorting of the wheel hubs after inspection, which improves the convenience and efficiency of the work. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the side cross-sectional structure of the inclined surface of the frustum of the present invention.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the roller of the present invention.

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the movable cover of the present invention.

[0020] Figure 5 This is a top-view cross-sectional view of the fixed tube structure of the present invention.

[0021] Figure 6 For the present invention Figure 1 A magnified schematic diagram of the structure at point A.

[0022] Figure 7This is a schematic cross-sectional view of the slider structure of the present invention.

[0023] Figure 8 This is a schematic diagram of the front cross-sectional structure of the base of the present invention.

[0024] In the diagram: 101, First electric conveyor roller; 102, Second electric conveyor roller; 103, Third electric conveyor roller; 104, Fourth electric conveyor roller; 201, Base; 202, Top seat; 203, Fixing plate; 204, Slider; 205, First lead screw; 206, Threaded hole; 207, Movable cavity; 208, Sprocket; 209, Chain; 210, First servo motor; 301, Ball hole; 302, Rolling ball; 401, Fixing frame; 402 403. Connecting block; 404. Vision camera; 505. Glass cover; 506. Illumination lamp; 507. Connecting frame; 508. Rotating shaft; 609. Movable cover; 6000. Frustum inclined surface; 601. Connecting plate; 602. Roller; 701. Internally threaded tube; 702. Second lead screw; 703. Second servo motor; 801. Fixed rod; 802. Movable hole; 901. Fixed tube; 902. Vent hole; 903. Piston block; 904. Connecting rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides, for example Figures 1-8 The machine vision-based wheel hub blank defect sorting equipment shown includes a conveying mechanism, an inspection mechanism, a lighting mechanism, an adjustment mechanism, a cleaning mechanism, and a lifting mechanism. The inspection mechanism is located at the top of the conveying mechanism, the lighting mechanism is located outside the inspection mechanism, the adjustment mechanism is located at the top of the lighting mechanism, the cleaning mechanism is located at the bottom of the inspection mechanism, and the lifting mechanism is located in the middle of the conveying mechanism. The inspection mechanism performs visual inspection on the wheel hubs on the conveying mechanism. After the inspection is completed, the lifting mechanism adjusts the conveying path of the conveying mechanism to complete the automatic sorting of wheel hubs after inspection, thereby improving the convenience and efficiency of the work.

[0027] The conveying mechanism includes a first electric conveying roller 101, a second electric conveying roller 102, and a fourth electric conveying roller 104. A detection mechanism is located at the top of the first electric conveying roller 101. A lifting mechanism is connected to the second electric conveying roller 102. A third electric conveying roller 103 is fixedly connected to the top of the fourth electric conveying roller 104. The lifting mechanism is used to move the second electric conveying roller 102 to align with the third electric conveying roller 103 and the fourth electric conveying roller 104. The wheel hub is detected at the top of the first electric conveying roller 101. After detection, the wheel hub moves with the first electric conveying roller 101. 1. Move to the top of the second electric conveyor roller 102. If the hub is qualified, the lifting mechanism will drive the second electric conveyor roller 102 to descend, so that the second electric conveyor roller 102 is aligned with the fourth electric conveyor roller 104, and the second electric conveyor roller 102 will move the qualified hub onto the fourth electric conveyor roller 104. If the hub is unqualified, the lifting mechanism will drive the second electric conveyor roller 102 to rise, so that the second electric conveyor roller 102 is aligned with the third electric conveyor roller 103, and the second electric conveyor roller 102 will move the unqualified hub onto the third electric conveyor roller 103.

[0028] The lifting mechanism includes a base 201, a fixed plate 203, and a slider 204. A top seat 202 is provided above the base 201. The fixed plate 203 is symmetrically fixed between the base 201 and the top seat 202. A second electric conveying roller 102 is slidably disposed between the two fixed plates 203. The slider 204 is symmetrically fixed to both sides of the second electric conveying roller 102. A groove is provided on one side of the fixed plate 203. The outer wall of the slider 204 is slidably connected to the inner wall of the groove. A first lead screw 205 is rotatably connected to the inner wall of the groove. A threaded hole 206 is provided at the top of the slider 204. The outer wall of the first lead screw 205 is threadedly connected to the inner wall of the threaded hole 206. A first servo motor 210 is installed at the top of the top seat 202. The output end of the first servo motor 210 is connected to the top of one of the first lead screws 205. A synchronization mechanism is provided inside the base 201. The synchronization mechanism includes a movable cavity 207, a sprocket 208, and a chain 209. 207 is located inside the base 201. The bottom end of the first lead screw 205 passes through the top end of the base 201 and is rotatably connected to the bottom end of the inner wall of the movable cavity 207. The sprocket 208 is fixedly sleeved on the end of the first lead screw 205 and located inside the movable cavity 207. The chain 209 is connected between the two sprockets 208. The outer wall of the fixed plate 203 has multiple ball holes 301. The inner wall of the ball holes 301 is movably fitted with a ball 302. The outer wall of the ball 302 is fitted with the inner wall of the slide groove. The first servo motor 210 drives the corresponding first lead screw 205 to rotate. Then, under the connection of the chain 209 and the two sprockets 208, the two first lead screws 205 will rotate synchronously. Then, under the meshing of the outer wall of the first lead screw 205 with the inner wall of the threaded hole 206, the slider 204 moves in the slide groove. The setting of the ball 302 makes the slider 204 move more smoothly in the slide groove, thereby improving the smoothness of the lifting mechanism.

[0029] The detection mechanism includes a fixed frame 401, a connecting block 402, a vision camera 403, and a glass cover 404. The fixed frame 401 is fixedly connected to the top of the first electric conveyor roller 101. The connecting block 402 is located inside the fixed frame 401. The lighting mechanism is located on the outer wall of the connecting block 402. The vision camera 403 is installed at the bottom of the connecting block 402. The glass cover 404 is fixedly connected to the bottom of the connecting block 402. The vision camera 403 is used to photograph and detect the hub at the top of the first electric conveyor roller 101.

[0030] The lighting mechanism includes a connecting frame 502 and an illumination lamp 501. The connecting frame 502 is fixedly connected to the outer wall of the connecting block 402 in a circular array. The top of the illumination lamp 501 has a rotating groove. The outer wall of the illumination lamp 501 is symmetrically fixedly connected to a rotating shaft 503. The rotating shaft 503 is rotatably connected to the inner wall of the rotating groove. An adjustment mechanism is set at the top of the illumination lamp 501. When the vision camera 403 detects the first electric conveyor roller 101, the hub on the first electric conveyor roller 101 is illuminated by multiple illumination lamps 501, thereby increasing the accuracy of the detection.

[0031] The adjustment mechanism includes a movable cover 601, rollers 604, an internally threaded tube 701, a second lead screw 702, a second servo motor 703, and a fixed rod 801. The movable cover 601 is positioned above the connecting block 402, and its outer wall has a frustum-shaped inclined surface 602. The cleaning mechanism is located at the bottom of the movable cover 601. Connecting plates 603 are symmetrically fixedly connected to the top of the illumination lamp 501. The rollers 604 are rotatably connected between the two connecting plates 603. The second lead screw 702 is rotatably connected between the fixed frame 401 and the connecting block 402. The internally threaded tube 701 is fixedly inserted into the top of the movable cover 601, and the outer wall of the second lead screw 702 is threadedly connected to the inner wall of the internally threaded tube 701. The second servo motor 703 is mounted on the top of the fixed frame 401. The output end of the servo motor 703 is connected to the top end of the second lead screw 702. The fixed rod 801 is fixedly connected between the bottom end of the fixed frame 401 and the top end of the connecting block 402. The top end of the movable cover 601 is provided with a movable hole 802. The fixed rod 801 is inserted into the inner wall of the movable hole 802. The second servo motor 703 drives the second lead screw 702 to rotate. Through the engagement between the outer wall of the second lead screw 702 and the inner wall of the internal threaded tube 701, the movable cover 601 is lowered. The truncated cone inclined surface 602 on the outer wall of the movable cover 601 presses against the roller 604. As the movable cover 601 is lowered, multiple illumination lamps 501 rotate simultaneously, so that the illumination lamps 501 irradiate from the side of the hub to the center of the hub, thus ensuring the detection accuracy.

[0032] The cleaning mechanism includes a fixed pipe 901, a piston block 903, and a connecting rod 904. The fixed pipe 901 is fixedly connected to the outer wall of the connecting block 402, and an exhaust hole 902 is provided at the end of the fixed pipe 901. The piston block 903 is disposed on the inner wall of the fixed pipe 901. The bottom end of the connecting rod 904 is fixedly connected to the top end of the piston block 903, and the top end of the connecting rod 904 is fixedly connected to the top end of the inner wall of the movable cover 601. When the movable cover 601 descends, it will drive the connecting rod 904 to descend. The descending of the connecting rod 904 causes the piston block 903 to descend, thereby allowing the exhaust port 902 to exhaust air onto the bottom surface of the glass cover 404. This blows away the floating dust at the bottom of the glass cover 404, preventing it from affecting the imaging of the vision camera 403 and further ensuring the detection accuracy. The fixing tube 901 is only fixed to one side of the connecting block 402, so that the air blown out of the exhaust port 902 will not blow against each other, thus ensuring that the floating dust at the bottom of the glass cover 404 can be blown away stably and ensuring the stability of the cleaning mechanism.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A machine vision-based wheel hub blank defect sorting device, characterized in that, include: Conveying mechanism; A testing mechanism is located at the top of the conveying mechanism; A lighting mechanism, wherein the lighting mechanism is disposed outside the detection mechanism; An adjustment mechanism is provided at the top of the lighting mechanism; A cleaning mechanism is located at the bottom of the detection mechanism; A lifting mechanism is located in the middle of the conveying mechanism.

2. The machine vision-based wheel hub blank defect sorting equipment according to claim 1, characterized in that, The conveying mechanism includes: The first electric conveyor roller (101) has the detection mechanism located at the top of the first electric conveyor roller (101); The second electric conveyor roller (102) is connected to the lifting mechanism; The fourth electric conveyor roller (104) has a third electric conveyor roller (103) fixedly connected to its top end. The lifting mechanism is used to move the second electric conveyor roller (102) to align with the third electric conveyor roller (103) and the fourth electric conveyor roller (104).

3. The machine vision-based wheel hub blank defect sorting equipment according to claim 2, characterized in that, The lifting mechanism includes: A base (201) is provided above the base (201); A fixing plate (203) is symmetrically fixed between the base (201) and the top seat (202), and the second electric conveying roller (102) is slidably disposed between the two fixing plates (203); The slider (204) is symmetrically fixedly connected to both sides of the second electric conveying roller (102). A groove is provided on one side of the fixed plate (203). The outer wall of the slider (204) is slidably connected to the inner wall of the groove.

4. The machine vision-based wheel hub blank defect sorting equipment according to claim 3, characterized in that, The inner wall of the slide is rotatably connected to a first lead screw (205). The top of the slider (204) is provided with a threaded hole (206). The outer wall of the first lead screw (205) is threadedly connected to the inner wall of the threaded hole (206). The top of the top seat (202) is equipped with a first servo motor (210). The output end of the first servo motor (210) is connected to the top of one of the first lead screws (205) for transmission. The base (201) is provided with a synchronization mechanism inside.

5. The machine vision-based wheel hub blank defect sorting equipment according to claim 4, characterized in that, The synchronization mechanism includes: The movable cavity (207) is located inside the base (201). The bottom end of the first lead screw (205) passes through the top end of the base (201) and is rotatably connected to the bottom end of the inner wall of the movable cavity (207). A sprocket (208) is fixedly sleeved on the end of the first lead screw (205) and located inside the movable cavity (207); A chain (209) is driven between two sprockets (208).

6. The machine vision-based wheel hub blank defect sorting equipment according to claim 3, characterized in that, The outer wall of the fixing plate (203) is provided with a plurality of ball holes (301), and a ball (302) is movably mounted on the inner wall of the ball hole (301). The outer wall of the ball (302) is fitted to the inner wall of the slide groove.

7. The machine vision-based wheel hub blank defect sorting equipment according to claim 2, characterized in that, The testing institutions include: A fixing frame (401) is fixedly connected to the top of the first electric conveying roller (101); A connecting block (402) is disposed inside the fixing frame (401), and the lighting mechanism is disposed on the outer wall of the connecting block (402); A visual camera (403) is mounted on the bottom of the connecting block (402); A glass cover (404) is fixedly connected to the bottom end of the connecting block (402).

8. The machine vision-based wheel hub blank defect sorting equipment according to claim 7, characterized in that, The lighting mechanism includes: A connecting frame (502) is fixedly connected to the outer wall of the connecting block (402) in a ring array; An illumination lamp (501) has a rotating groove at its top. A rotating shaft (503) is symmetrically fixed to the outer wall of the illumination lamp (501). The rotating shaft (503) is rotatably connected to the inner wall of the rotating groove. The adjustment mechanism is located at the top of the illumination lamp (501).

9. The machine vision-based wheel hub blank defect sorting equipment according to claim 8, characterized in that, The adjustment mechanism includes: A movable cover (601) is disposed above the connecting block (402). The outer wall of the movable cover (601) is provided with a frustum-shaped inclined surface (602). The cleaning mechanism is disposed at the bottom end of the movable cover (601). The roller (604) is symmetrically fixedly connected to the top of the illumination lamp (501) with a connecting plate (603), and the roller (604) is rotatably connected between the two connecting plates (603). The second lead screw (702) is rotatably connected between the fixed frame (401) and the connecting block (402); An internally threaded tube (701) is fixedly inserted into the top of a movable cover (601), and the outer wall of the second lead screw (702) is threadedly connected to the inner wall of the internally threaded tube (701). The second servo motor (703) is mounted on the top of the fixed frame (401), and the output end of the second servo motor (703) is connected to the top of the second lead screw (702) for transmission. A fixed rod (801) is fixedly connected between the bottom end of the fixed frame (401) and the top end of the connecting block (402). The top end of the movable cover (601) is provided with a movable hole (802), and the fixed rod (801) is inserted into the inner wall of the movable hole (802).

10. The machine vision-based wheel hub blank defect sorting equipment according to claim 9, characterized in that, The cleaning mechanism includes: A fixed tube (901) is fixedly connected to the outer wall of the connecting block (402), and an exhaust hole (902) is provided at the end of the fixed tube (901). Piston block (903), the piston block (903) is disposed on the inner wall of the fixed tube (901); The bottom end of the connecting rod (904) is fixedly connected to the top end of the piston block (903), and the top end of the connecting rod (904) is fixedly connected to the top end of the inner wall of the movable cover (601).

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