A vision inspection device for inspecting a component part

Abstract

The utility model relates to a kind of visual inspection device for detecting spare parts, with work platform, positioning platform, and rack;Positioning platform is equipped with positioning assembly, and detection assembly is equipped on rack, and inner cavity is equipped in positioning platform, and positioning assembly includes rotating motor, rotating plate, crank, limiting slide bar, limiting sliding block, connecting slide bar, rotating sleeve, press bar, and briquet, connecting sliding groove is equipped on positioning platform, buffer sliding slot is equipped on each briquet, buffer slide bar is equipped in each buffer sliding slot, buffer sliding block is sleeved on each buffer slide bar, the end of press bar away from rotating sleeve is rotatably connected with buffer sliding block, the bottom of each briquet is equipped with bottom sliding block, and bottom sliding block is slidably arranged in corresponding connecting sliding groove, buffer spring is sleeved on each buffer slide bar, and the two ends of buffer spring are respectively applied on buffer sliding block and the side wall of buffer sliding slot away from connecting sliding groove.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection of parts, and in particular to a visual inspection device for inspecting parts. Background Technology

[0002] With the development of machine vision technology, vision-based automated inspection devices are increasingly being applied to the quality inspection of automotive parts. These devices typically include a work platform for placing the parts to be inspected, and a frame equipped with a camera and light source. Images of the parts are captured by the camera and analyzed by image processing software, enabling rapid, non-contact assessment of part dimensions, appearance defects, and any missed machining processes.

[0003] Existing vision inspection devices still have significant limitations in practical applications, especially for automotive parts with irregular shapes or requiring multi-angle inspection, such as engine connecting rods, irregular brackets, and turbine blades. Firstly, traditional positioning fixtures are mostly rigid structures, typically only suitable for one or a few specific parts models, lacking versatility. When the production line needs to switch to different parts models, it must stop and replace or readjust the fixtures, severely impacting production efficiency and increasing equipment investment and maintenance costs. During positioning, the rigid fixture is in direct contact with the part surface; if the clamping force is not properly controlled, scratches or indentations can easily occur on the finished surface, resulting in defective products. This affects overall inspection efficiency, increases the overall inspection cycle, and impacts the later lifespan of the parts, causing considerable inconvenience. Summary of the Invention

[0004] The purpose of this invention is to provide a visual inspection device for inspecting parts. It has an ingenious structure and can locate various parts, thereby ensuring accurate, efficient and convenient inspection of parts.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a working platform, a positioning platform set on the working platform, and a frame set on the working platform; the positioning platform is provided with a positioning component that can position parts, and the frame is provided with a detection component that can visually inspect the parts on the positioning component; the positioning platform has an inner cavity; the positioning component includes a rotary motor fixed in the inner cavity, a rotating plate set in the inner cavity under the drive of the rotary motor, a curved rod symmetrically arranged on the rotating plate along the axis of the rotating plate, a limiting slide rod set on both sides of the rotating plate, a limiting slider slidably set on the limiting slide rod, a connecting slide rod set on both sides of each limiting slider, a rotating sleeve sleeved on each connecting slide rod and rotatably connected to the connecting slide rod, a pressure rod set on each rotating sleeve, and a pressure block that movably cooperates with each pressure rod; the positioning platform is provided with a connecting groove corresponding to each connecting slide rod, the extension direction of each connecting groove is parallel to the extension direction of the limiting slide rod, the connecting slide rod is L-shaped, and one end of each connecting slide rod... Fixed on the limiting slider, the other end of each connecting slider passes through and extends out of the connecting groove. The rotating sleeve is set above the positioning platform and is rotatably connected to the end of the connecting slider that extends out of the connecting groove. Each pressure block is provided with a buffer groove perpendicular to the connecting groove. Each buffer groove is provided with a buffer slider, and each buffer slider is fitted with a buffer slider. The buffer slider is slidably set in the corresponding buffer groove. The end of the pressure rod away from the rotating sleeve is rotatably connected to the buffer slider. Each pressure block is provided with a bottom slider, which is slidably set in the corresponding connecting groove. Each buffer slider is fitted with a buffer spring. The two ends of the buffer spring act on the buffer slider and the side wall of the buffer groove away from the connecting groove, respectively. Each pressure block presses the parts together through the drive of the rotating plate by the rotary motor, the sliding engagement of the limiting slider and the limiting slider, the sliding engagement of the connecting slider and the connecting groove, the rotational engagement of the rotating sleeve and the connecting slider, and the sliding engagement of the buffer slider and the buffer groove. The detection component on the frame performs visual inspection on the parts positioned on the positioning platform.

[0006] Furthermore, each pressure block has a pressure airbag on the surface opposite to the buffer groove. The pressure airbag is inflated after each pressure block presses against the component and clamps the component.

[0007] Furthermore, both sides of the aforementioned positioning platform are equipped with conveyor supports, and each conveyor support is equipped with a conveyor belt for loading or unloading parts.

[0008] Furthermore, the aforementioned detection assembly includes a drive motor fixed on a frame, a moving block horizontally slidable on the frame under the drive of the drive motor, a lifting cylinder mounted on the moving block, a lifting plate mounted on the telescopic end of the lifting cylinder, an adjusting motor mounted on the lifting plate, a drive slider slidably mounted on the lifting plate under the drive of the adjusting motor, a mounting rod rotatably mounted on the lifting plate under the drive of the drive slider, a detection camera mounted on the mounting rod, and a detection light source adapted to the detection camera. The lifting plate is provided with a rotating block and a rotating hole adapted to the rotating block. The mounting rod is rotatably connected to the lifting plate through the cooperation of the rotating block and the rotating hole. The drive slider is provided with a drive slide rod, and the mounting rod is provided with a vertically arranged drive slide groove. The drive slide rod is slidably mounted in the drive slide groove. The drive end of the adjusting motor is provided with a screw. The drive end of the screw away from the driving motor is rotatably connected to the lifting plate. The drive slider is provided with a screw hole adapted to the screw. The drive slider is slidably mounted on the lifting plate through the drive of the screw by the adjusting motor and the threaded cooperation between the screw and the screw hole, and drives the mounting rod to rotate through the cooperation of the drive slide rod and the drive slide groove.

[0009] Furthermore, the mounting rod is symmetrically provided with side curved plates coaxially arranged with the rotating hole on both sides. Each side curved plate is provided with a limiting arc groove coaxially arranged with the rotating hole. The lifting plate is provided with a limiting protrusion adapted to each limiting arc groove and slidably arranged in the corresponding limiting arc groove. The mounting rod is limited and rotatedly connected to the lifting plate through the cooperation of the rotating block and the rotating hole, and the sliding cooperation of each limiting protrusion and the limiting arc groove.

[0010] This utility model has positive effects: (1) This utility model achieves an adaptive, multi-point synchronous flexible positioning mechanism through the coordinated action of a rotating motor, a rotating plate, a crank rod, a limiting slide rod, a slider, a connecting slide rod, a rotating sleeve, a pressure rod, and a pressure block. When the rotating motor drives the rotating plate, the crank rod pushes multiple limiting sliders to move synchronously towards or away from each other, thereby driving all pressure blocks to move closer to or away from the center of the parts at the same time. The symmetrical linkage design can automatically center and is suitable for automotive parts of different sizes. In addition, the pressure block and the connecting rod are connected by a buffer spring to form a buffer clamping mechanism, which can avoid scratches or indentations on the surface of precision automotive parts caused by rigid contact, protect the surface quality of the workpiece, and effectively solve the problem of scratches or indentations on parts caused by improper clamping force control in the prior art. Through the synchronous sliding and buffering mechanism of each pressure block, the hard collision between the pressure block and the parts is greatly reduced, ensuring the safety of the parts and the service life of the pressure block. It has good adjustability and applicability, and is safe and practical.

[0011] (2) By adding a pressure airbag to the pressure block, when the pressure block moves through the mechanical structure and contacts the parts, the pressure airbag is inflated. Its internal pressure is evenly applied to the irregular or finely machined surface of the parts, eliminating the concentration of local stress and greatly reducing the risk of clamping damage to vulnerable and high-gloss automotive parts, such as aluminum alloy housings and precision shaft parts. The clamping is more stable and reliable, and it is more applicable to parts of various shapes, making it convenient and practical.

[0012] (3) By setting conveyor belts on both sides of the positioning platform, this utility model realizes the automated loading and unloading of automotive parts, which can be seamlessly connected with the automated production line, automatically transporting the parts to be inspected to the positioning platform, and automatically removing the inspected parts after inspection. This greatly reduces manual intervention, significantly improves the efficiency and continuity of the entire inspection process, and also greatly improves the degree of automation, making it highly efficient and convenient.

[0013] (4) This utility model achieves horizontal movement through a drive motor and vertical movement through a lifting cylinder. In particular, by adjusting the coordination of the motor, screw and drive slider, the pitch angle of the mounting rod, as well as the detection camera and detection light source on the mounting rod, is adjusted, so that the detection camera can take pictures of deep holes, side walls and complex curved surfaces on automotive parts with complex structures from multiple angles, effectively avoiding blind spots in detection, greatly improving the adaptability and detection coverage of the vision inspection system, and ensuring the comprehensiveness and accuracy of the detection results.

[0014] (5) The present invention provides precise auxiliary support and limit for the rotation of the mounting rod through the cooperation of the side curved plate, the limiting arc groove and the limiting protrusion, which enhances the rigidity and stability of the inspection camera mounting structure, prevents the inspection camera from shaking or drifting during the adjustment of angle or movement, and ensures the stability of the inspection camera to ensure the clarity and blur-free image obtained, thereby directly improving the accuracy and repeatability of visual inspection and ensuring the reliability of the inspection data. Attached Figure Description

[0015] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the overall structure of the visual inspection device for inspecting parts in this utility model; Figure 2 This is a schematic diagram of the connection structure between the lifting plate and the mounting rod in this utility model; Figure 3 This is a sectional view of the overall structure of the mounting rod in this utility model; Figure 4 This is a rear view of the overall structure of the pressure block in this utility model; Figure 5 This is a top view of the overall structure of the positioning platform in this utility model; Figure 6 This is a schematic diagram of the overall structure of the positioning component within the positioning platform of this utility model; The attached figures are labeled as follows: Components A, Working Platform 1, Frame 2, Positioning Platform 3, Connecting Slide 31, Conveyor Belt 4, Positioning Component 5, Rotary Motor 51, Rotating Plate 52, Crank Rod 53, Limiting Slider 54, Limiting Slide Rod 55, Connecting Slide Rod 56, Pressure Block 57, Bottom Slider 571, Buffer Slide 572, Buffer Slide Rod 573, Buffer Slider 574, Buffer Spring 575, Rotating Sleeve 58, Pressure Rod 59, Detection Component 6, Drive Motor 61, Moving Block 62, Lifting Cylinder 63, Lifting Plate 64, Adjusting Motor 65, Screw 651, Drive Slider 66, Drive Slide Rod 661, Screw Hole 662, Mounting Rod 67, Side Curved Plate 671, Limiting Arc Groove 672, Limiting Protrusion 673, Drive Slide 674, Rotating Block 675, Detection Camera 68, Detection Light Source 69, Pressure Airbag 7. Detailed Implementation

[0016] See Figures 1 to 6This utility model includes a working platform 1, a positioning platform 3 mounted on the working platform 1, and a frame 2 mounted on the working platform 1. The positioning platform 3 is equipped with a positioning component 5 for positioning part A. The frame 2 is equipped with a detection component 6 for visually inspecting part A on the positioning component 5. The positioning platform 3 has an inner cavity. The positioning component 5 includes a rotary motor 51 fixed within the inner cavity, a rotating plate 52 driven by the rotary motor 51 and mounted within the inner cavity, a curved rod 53 symmetrically arranged on the rotating plate 52 along its central axis, limiting slide rods 55 on both sides of the rotating plate 52, and sliding rods 55 on the limiting slide rods. The positioning platform 3 includes a limiting slider 54 on rod 55, connecting sliders 56 on both sides of each limiting slider 54, a rotating sleeve 58 sleeved on each connecting slider 56 and rotatably connected to it, a pressure rod 59 on each rotating sleeve 58, and a pressure block 57 that movably cooperates with each pressure rod 59. The two ends of the curved rod 53 are rotatably connected to the rotating plate 52 and the limiting slider 54, respectively. The positioning platform 3 is provided with connecting grooves 31 corresponding to each connecting slider 56. The extending direction of each connecting groove 31 is parallel to the extending direction of the limiting slider 55. The connecting sliders 56 are L-shaped, and one end of each connecting slider 56 is fixed to the limiting slider 54. The other end of each connecting slide rod 56 passes through and extends out of the connecting slide groove 31. The rotating sleeve 58 is positioned above the positioning platform 3 and is rotatably connected to the end of the connecting slide rod 56 that extends out of the connecting slide groove 31. Each pressure block 57 is provided with a buffer slide groove 572 that is perpendicular to the connecting slide groove 31. Each buffer slide groove 572 is provided with a buffer slide rod 573, and each buffer slide rod 573 is fitted with a buffer slider 574. The buffer slider 574 is slidably positioned in the corresponding buffer slide groove 572. The end of the pressure rod 59 away from the rotating sleeve 58 is rotatably connected to the buffer slider 574. Each pressure block 57 is provided with a bottom slider 571 at the bottom, and the bottom slider 571 is slidably positioned. Within the corresponding connecting groove 31, each buffer slide rod 573 is fitted with a buffer spring 575. The two ends of the buffer spring 575 act on the side wall of the buffer slider 574 and the buffer groove 572 away from the connecting groove 31, respectively. Each pressure block 57 presses against the component A through the drive of the rotating plate 52 by the rotary motor 51, the sliding engagement of the limiting slider 54 and the limiting slide rod 55, the sliding engagement of the connecting slide rod 56 and the connecting groove 31, the rotational engagement of the rotating sleeve 58 and the connecting slide rod 56, and the sliding engagement of the buffer slider 574 and the buffer groove 572. The detection component 6 on the frame 2 performs visual inspection on the positioned component A on the positioning platform 3.

[0017] Each pressure block 57 has a pressure airbag 7 on its surface away from the buffer slide groove 572. The pressure airbag 7 is inflated after each pressure block 57 presses against the component A and clamps the component A.

[0018] Both sides of the positioning platform 3 are equipped with conveyor supports, and each conveyor support is equipped with a conveyor belt 4 for loading or unloading parts A.

[0019] The detection assembly 6 includes a drive motor 61 fixed on the frame 2, a moving block 62 horizontally slidably mounted on the frame 2 under the drive of the drive motor 61, a lifting cylinder 63 mounted on the moving block 62, a lifting plate 64 mounted on the telescopic end of the lifting cylinder 63, an adjusting motor 65 mounted on the lifting plate 64, a driving slider 66 slidably mounted on the lifting plate 64 under the drive of the adjusting motor 65, a mounting rod 67 rotatably mounted on the lifting plate 64 under the drive of the driving slider 66, a detection camera 68 mounted on the mounting rod 67, and a detection light source 69 adapted to the detection camera 68. The lifting plate 64 has a rotating block 675 and a rotating hole adapted to the rotating block 675. The mounting rod 67 passes through... The drive slider 66 is rotatably connected to the lifting plate 64 through the cooperation of the rotating block 675 and the rotating hole. The drive slider 66 is provided with a drive slide rod 661, and the mounting rod 67 is provided with a vertically arranged drive slide groove 674. The drive slide rod 661 is slidably disposed in the drive slide groove 674. The drive end of the adjusting motor 65 is provided with a screw 651. The drive end of the screw 651 away from the adjusting motor 65 is rotatably connected to the lifting plate 64. The drive slider 66 is provided with a screw hole 662 adapted to the screw 651. The drive slider 66 is slidably disposed on the lifting plate 64 through the drive of the screw 651 by the adjusting motor 65 and the threaded cooperation between the screw 651 and the screw hole 662, and drives the mounting rod 67 to rotate through the cooperation of the drive slide rod 661 and the drive slide groove 674.

[0020] The mounting rod 67 has symmetrically arranged side curved plates 671 coaxially arranged with the rotating hole on both sides. Each side curved plate 671 has a limiting arc groove 672 coaxially arranged with the rotating hole. The lifting plate 64 has a limiting protrusion 673 adapted to each limiting arc groove 672 and slidably arranged in the corresponding limiting arc groove 672. The mounting rod 67 is limited and rotatedly connected to the lifting plate 64 through the cooperation of the rotating block 675 with the rotating hole and the sliding cooperation of each limiting protrusion 673 with the limiting arc groove 672.

[0021] The working principle of this utility model is as follows: During use, component A is conveyed to the positioning platform 3 via the conveyor belt 4 on one side. The rotary motor 51 drives the rotating plate 52 to rotate, and during the rotation, it drives each crank 53 to move. The crank 53 drives the limiting slider 54 to move on the limiting slide rod 55. During the sliding of the limiting slider 54, each pressure block 57 on both sides presses against component A synchronously. During the pressing process, the impact of the pressure block 57 on component A is reduced by the cooperation of the buffer slider 574 and the buffer groove 572, as well as the continuous force of the buffer spring 575. Force is applied to prevent the pressure blocks 57 from scratching the surface of component A. After each pressure block 57 presses against component A, the pressure airbags 7 are inflated. After each pressure airbag 7 is inflated, the pressure blocks 57 are fully pressed and adhered to, ensuring that the pressure blocks 57 are suitable for various components A. After component A is pressed, the drive motor 61 drives the moving block 62 and the lifting cylinder 63 on the moving block 62 to move above component A. The lifting cylinder 63 adjusts the distance between the detection camera 68 and component A by driving the lifting plate 64. When it is necessary to detect the side of component A, the drive slider 66 moves... The adjusting motor 65 drives the screw 651, and the screw 651 and screw hole 662 are threadedly fitted and slidably mounted on the lifting plate 64. Through the cooperation of the driving slide rod 661 and the driving slide groove 674, the mounting rod 67 is rotated, thereby adjusting the detection angle of the detection camera 68 and the detection light source 69. Simultaneously, the movement of the moving block 62 is used to detect the side of part A, thus improving the comprehensiveness and efficiency of the detection. After the detection is completed, each pressure bag 7 is first deflated, then the rotating motor 51 reverses, causing each pressure block 57 to detach from part A. Then, the feeding conveyor belt 4 feeds the next part A to be detected. During the process, the inspected component A is pushed to the other side of the conveyor belt 4, thereby realizing the unloading of the inspected component A. This effectively solves the problem in the existing technology where improper clamping force control can easily cause scratches or indentations on the precision-machined surface, resulting in defective products, affecting the overall inspection efficiency, increasing the overall inspection cycle, and affecting the service life of component A. It greatly improves the safety of component A during the positioning process, and also greatly reduces the scratches caused by the pressure block 57 to component A. It also improves the applicability to various shapes of component A, as well as the comprehensiveness and efficiency of component A inspection. The structure is ingenious, convenient and practical.

[0022] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A visual inspection device for inspecting parts, comprising a working platform, a positioning platform disposed on the working platform, and a frame disposed on the working platform; characterized in that: The positioning platform is equipped with a positioning component for positioning parts, and the frame is equipped with a detection component for visual inspection of the parts on the positioning component. The positioning platform has an inner cavity. The positioning component includes a rotary motor fixed in the inner cavity, a rotating plate that rotates in the inner cavity under the drive of the rotary motor, a curved rod symmetrically arranged on the rotating plate along the axis of the rotating plate, limiting slide rods arranged on both sides of the rotating plate, limiting sliders slidably arranged on the limiting slide rods, connecting slide rods arranged on both sides of each limiting slider, a rotating sleeve sleeved on each connecting slide rod and rotatably connected to the connecting slide rod, a pressure rod arranged on each rotating sleeve, and a pressure block that movably cooperates with each pressure rod. The positioning platform has connecting grooves corresponding to each connecting slide rod. The extension direction of each connecting groove is parallel to the extension direction of the limiting slide rod. The connecting slide rod is L-shaped. One end of each connecting slide rod is fixed to the limiting slider, and the other end of each connecting slide rod passes through and extends out of the connecting groove. The rotating sleeve is positioned above the positioning platform and rotatably connected to the end of the connecting slide rod that extends out of the connecting slide groove. Each pressure block has a buffer slide groove perpendicular to the connecting slide groove, and each buffer slide groove has a buffer slide rod. Each buffer slide rod is fitted with a buffer slider, which is slidably positioned in the corresponding buffer slide groove. The end of the pressure rod away from the rotating sleeve is rotatably connected to the buffer slider. Each pressure block has a bottom slider at its bottom, which is slidably positioned in the corresponding connecting slide groove. Each buffer slide rod is fitted with a buffer spring, and the two ends of the buffer spring act on the buffer slider and the side wall of the buffer slide groove away from the connecting slide groove, respectively. Each pressure block presses the parts together through the drive of the rotating plate by the rotary motor, the sliding engagement of the limit slider and the limit slide rod, the sliding engagement of the connecting slide rod and the connecting slide groove, the rotational engagement of the rotating sleeve and the connecting slide rod, and the sliding engagement of the buffer slider and the buffer slide groove. The detection component on the frame performs visual inspection on the parts positioned on the positioning platform.

2. The visual inspection device for inspecting parts according to claim 1, characterized in that: Each pressure block has a pressure airbag on its surface away from the buffer slide groove. The pressure airbag is inflated after each pressure block presses against the component and clamps the component.

3. A visual inspection device for inspecting parts according to claim 2, characterized in that: The positioning platform is equipped with conveyor supports on both sides, and each conveyor support is equipped with a conveyor belt for loading or unloading parts.

4. A visual inspection device for inspecting parts according to claim 3, characterized in that: The detection assembly includes a drive motor fixed on a frame, a moving block horizontally slidable on the frame under the drive of the drive motor, a lifting cylinder on the moving block, a lifting plate at the telescopic end of the lifting cylinder, an adjusting motor on the lifting plate, a drive slider slidably mounted on the lifting plate under the drive of the adjusting motor, a mounting rod rotatably mounted on the lifting plate under the drive of the drive slider, a detection camera mounted on the mounting rod, and a detection light source adapted to the detection camera. The lifting plate has a rotating block and a rotating hole adapted to the rotating block. The mounting rod is rotatably connected to the lifting plate through the cooperation of the rotating block and the rotating hole. The drive slider has a drive slide rod, and the mounting rod has a vertically arranged drive groove. The drive slide rod slidably is located within the drive groove. The driving end of the adjusting motor has a screw, and the end of the screw away from the driving motor is rotatably connected to the lifting plate. The drive slider has a screw hole adapted to the screw. The drive slider is slidably mounted on the lifting plate through the drive of the screw by the adjusting motor and the threaded cooperation between the screw and the screw hole, and drives the mounting rod to rotate through the cooperation of the drive slide rod and the drive groove.

5. A visual inspection device for inspecting parts according to claim 4, characterized in that: The mounting rod has symmetrically arranged side curved plates on both sides, which are coaxially arranged with the rotating hole. Each side curved plate has a limiting arc groove coaxially arranged with the rotating hole. The lifting plate has a limiting protrusion that is adapted to each limiting arc groove and slidably arranged in the corresponding limiting arc groove. The mounting rod is connected to the lifting plate by the cooperation of the rotating block and the rotating hole, and the sliding cooperation of each limiting protrusion and the limiting arc groove to limit rotation.

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