An automated visual inspection mechanism for hot stamping sheet metal

Abstract

This utility model discloses an automated visual inspection mechanism for hot stamping sheet metal, including a three-axis robot, a top surface inspection device, and a bottom surface inspection device. The three-axis robot is used to clamp products from the loading station onto a transport device, which is used to transport the products. The top surface inspection device includes a gantry frame and a matrix of second visual inspection devices distributed on the top wall of the gantry frame. A second strip light source is provided adjacent to the second visual inspection devices. The bottom surface inspection device includes a carrier and a lifting device. The carrier includes a horizontal bar and a vertical bar extending from the horizontal bar toward the transport device. The upper wall of the carrier is provided with spaced-apart first visual inspection devices, the relative tilt angle of which can be adjusted. The inner wall of the carrier is provided with a first strip light source. The carrier is mounted on the lifting device, which is used to drive the carrier to move vertically.

Description

Technical Field

[0001] This utility model relates to the field of visual inspection equipment, and in particular to an automated visual inspection mechanism for hot stamping sheet metal. Background Technology

[0002] Visual inspection is the use of machines to replace human eyes for measurement and judgment. Visual inspection refers to the process of using machine vision products (i.e., image acquisition devices, which are divided into CMOS and CCD) to convert the captured target into image signals, which are then transmitted to a dedicated image processing system. Based on pixel distribution and information such as brightness and color, the signals are converted into digital signals. The image system performs various operations on these signals to extract the features of the target, and then controls the operation of on-site equipment based on the judgment results.

[0003] In one design, the hot-pressed product is transported to the inspection position for a full inspection of the product's appearance, holes, and other features.

[0004] However, the product is relatively large in size, so how to detect the bottom is one of the key design considerations, and the lighting setup is one of the key points.

[0005] Meanwhile, the key to the design is how to achieve full inspection in one go and ensure the accuracy of lighting and visual images. Utility Model Content

[0006] The main purpose of this invention is to propose an automated visual inspection mechanism for hot stamping sheet metal, which aims to achieve visual inspection of large components and thus improve inspection efficiency.

[0007] To achieve the above objectives, this utility model proposes an automated visual inspection mechanism for hot stamping sheet metal, comprising:

[0008] A three-axis robotic arm is used to grip products at the loading station and transfer them to a transport device, which is used to transport the products.

[0009] A top surface inspection device, comprising a gantry frame, a second visual inspection device matrix distributed on the top wall of the gantry frame, and a second strip light source positioned adjacent to the second visual inspection device;

[0010] A bottom surface detection device includes a carrier and a lifting device. The carrier includes a horizontal bar and a vertical bar extending from the horizontal bar toward the transport device. The upper wall of the carrier is provided with spaced-apart first visual detection devices, the relative tilt angle of which can be adjusted. The inner wall of the carrier is provided with a first strip light source. The carrier is mounted on the lifting device, which is used to drive the carrier to move vertically.

[0011] In practical design, the gantry frame and carrier work together to achieve visual inspection of the bottom and top surfaces of the product. Multiple first and second visual inspection devices are used to process multiple positions or multiple image data. Simultaneously, the combination of a strip light source and the visual inspection devices allows for adjustment of the relative image acquisition point according to the product's height (improving image acquisition accuracy and reducing noise through lighting adjustments).

[0012] The detection points can be captured by a single vision detection device multiple times or by multiple vision detection devices capturing images once, thereby obtaining different image data and enabling the detection of the bottom and top surfaces of the product, effectively improving the detection accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the testing equipment;

[0014] Figure 2 Schematic diagram of bottom surface detection device Figure 1 ;

[0015] Figure 3 Schematic diagram of bottom surface detection device Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the transportation equipment;

[0017] Figure 5 This is a schematic diagram of the drive unit;

[0018] Figure 6 This is a schematic diagram of the top surface detection device.

[0019] In the picture,

[0020] 1 is a transport device.

[0021] 2 is the base, 21 is the horizontal rod, 22 is the vertical rod, and 23 is the guide wheel.

[0022] 31 is the first visual detection device, and 32 is the first bar light source.

[0023] 4 is the first swing rod, and 5 is the transparent cover.

[0024] 6 is the conveyor platform, 61 is the guide rail, and 62 is the slider.

[0025] 7 represents the drive unit, 70 represents the gearbox, 71 represents the rack, 72 represents the gear, and 73 represents the worm gear.

[0026] 8 represents the gantry frame, 81 represents the second visual inspection device, and 82 represents the second strip light source.

[0027] 100 is the product. Detailed Implementation

[0028] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 6 As shown, an automated visual inspection mechanism for hot stamping sheet metal includes,

[0032] A three-axis robot is used to pick up the product 100 from the loading station and place it onto the transport device 1, which is used to transport the product 100.

[0033] A top surface detection device, comprising a gantry frame 8 and a second visual detection device 81 matrixed on the top wall of the gantry frame 8, wherein a second strip light source 82 is provided adjacent to the second visual detection device 81.

[0034] The bottom surface detection device includes a carrier 2 and a lifting device. The carrier 2 includes a horizontal bar and a vertical bar 22 extending from the horizontal bar 21 toward the transport device 1. The upper wall of the carrier 2 is provided with spaced-apart first visual detection devices 31, and the relative tilt angle of the first visual detection devices 31 can be adjusted. The inner wall of the carrier 2 is provided with a first strip light source 32. The carrier 2 is mounted on the lifting device, and the lifting device is used to drive the carrier 2 to move vertically.

[0035] In the actual design, the gantry 8 and the carrier 2 work together to achieve visual inspection of the bottom and top surfaces of the product 100. Multiple first visual inspection devices 31 and second visual inspection devices 81 are used to process multiple positions or multiple image data. Simultaneously, the combination of a strip light source and the visual inspection devices allows adjustment of the relative image acquisition point according to the product's height (improving image acquisition accuracy and reducing noise through lighting).

[0036] The detection points can be captured by a single vision detection device multiple times or by multiple vision detection devices capturing images once, thereby obtaining different image data and enabling the detection of the bottom and top surfaces of the product, effectively improving the detection accuracy.

[0037] Specifically, the first visual inspection device 31 and the second visual inspection device 81 are multi-view CCD cameras.

[0038] In this embodiment of the utility model, the carrier 2 is pivotally mounted with a first swing rod 4, and the other end of the first swing rod 4 is pivotally mounted with a first visual detection device 31;

[0039] The gantry is pivotally mounted with a second swing rod, and the other end of the second swing rod is pivotally mounted with a second visual inspection device 81. Depending on the product and its position, the relative tilt angle can be adjusted according to actual needs to obtain images of the product at different positions and improve inspection accuracy.

[0040] Specifically, the lifting device is a telescopic motor.

[0041] In this embodiment of the utility model, the carrier 2 is provided with a plurality of downwardly extending guide posts, and a guide rod is provided around the guide post. The guide rod is provided with a guide wheel 23 that cooperates with the guide post. The guide wheel 23 abuts against the wall of the guide post, thereby adjusting the relative horizontal position of the carrier 2 according to different needs.

[0042] Specifically, the carrier 2 is provided with a transparent cover 5 around its periphery. The transparent cover 5 is used to enclose the first vision device, thereby protecting the first vision device and reducing the contamination of the lens by foreign objects.

[0043] In this embodiment of the present invention, the transport device 1 includes a transport platform 6, guide devices disposed on both sides of the transport platform 6, and a drive device 7 disposed on the transport platform 6.

[0044] The drive device 7 is used to drive the conveying platform 6 to move along the length direction of the guide device.

[0045] Specifically, the guiding device includes guide rails 61 and sliders 62 on both sides, the sliders are located on both sides of the conveying platform 6, the driving device 7 includes a drive motor located in the middle of the conveying platform 6 and a gearbox connected to the drive motor, the gearbox 70 has worm gears 73 connected to the gearbox 70 on both sides, and the worm gears 73 rotate in the same direction.

[0046] A rack 71 is provided above the guide rail 61, and a gear 72 that meshes with the rack 71 is provided at the end of the worm 73. When the drive motor drives the gearbox 70 to rotate, it drives the worm to rotate, thereby realizing the meshing of the gear along the length direction of the rack, thereby realizing the displacement of the conveying platform 6, and thus moving the product to the position of the first vision inspection device 31.

[0047] In this embodiment of the invention, the upper wall of the conveying platform 6 is provided with a plurality of spaced positioning posts, and the product tray is provided with positioning holes that cooperate with the positioning posts.

[0048] The upper end of the positioning post is wedge-shaped, which facilitates the loading and unloading of products.

[0049] Specifically, the second strip light source 82 can adjust its relative tilt angle through the cooperation of the arc groove and the pin, thereby realizing the angle adjustment of the second strip light source.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An automated vision inspection mechanism for hot-stamped sheet metal, characterized by, include, A three-axis robotic arm is used to grip products at the loading station and transfer them to a transport device, which is used to transport the products. A top surface inspection device, comprising a gantry frame, a second visual inspection device matrix distributed on the top wall of the gantry frame, and a second strip light source positioned adjacent to the second visual inspection device; A bottom surface detection device includes a carrier and a lifting device. The carrier includes a horizontal bar and a vertical bar extending from the horizontal bar toward the transport device. The upper wall of the carrier is provided with spaced-apart first visual detection devices, the relative tilt angle of which can be adjusted. The inner wall of the carrier is provided with a first strip light source. The carrier is mounted on the lifting device, which is used to drive the carrier to move vertically.

2. The automated visual inspection mechanism for hot stamping sheet metal as described in claim 1, characterized in that: The first visual inspection device and the second visual inspection device are multi-view CCD cameras.

3. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The carrier is pivotally mounted with a first swing arm, and the other end of the first swing arm is pivotally mounted with a first visual detection device; The gantry is equipped with a second swing arm, and a second visual inspection device is pivotally mounted on the other end of the second swing arm.

4. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The lifting device is a telescopic motor.

5. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The carrier is provided with multiple downwardly extending guide posts, and guide rods are provided around the periphery of the guide posts. The guide rods are provided with guide wheels that cooperate with the guide posts, and the guide wheels abut against the wall surface of the guide posts.

6. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The carrier is surrounded by a transparent cover, which is used to enclose the first vision device.

7. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The transport device includes a conveying platform, guide devices located on both sides of the conveying platform, and a drive device located on the conveying platform. The drive device is used to move the conveyor platform along the length of the guide device.

8. The automated vision inspection mechanism for hot-stamped sheet metal of claim 7, wherein: The guiding device includes guide rails and sliders on both sides, the sliders being located on both sides of the conveying platform. The driving device includes a drive motor located in the middle of the conveying platform and a gearbox connected to the drive motor. Worms connected to the gearbox are located on both sides of the gearbox, and the worms rotate in the same direction. A rack is provided above the guide rail, and a gear that meshes with the rack is provided at the end of the worm gear.

9. The automated vision inspection mechanism for hot-stamped sheet metal of claim 7, wherein: The upper wall of the conveying platform is provided with a plurality of positioning posts spaced apart, and the upper end of the positioning posts is wedge-shaped.

10. The automated vision inspection mechanism for hot-stamped sheet metal of claim 1, wherein: The second strip light source can adjust its relative tilt angle, and the gantry and the second strip light source are respectively provided with mutually cooperating arc grooves and pins.

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