Visual inspection device for automobile seat headrest support

Abstract

The utility model discloses a visual inspection device for an automobile seat headrest support, which belongs to the technical field of visual inspection and comprises a bottom plate, a shooting support is arranged on one side of the upper end of the bottom plate, camera supports are fixed on two sides of the upper end of the shooting support, and industrial cameras are arranged at the bottom ends of the camera supports. Support bottom jacking blocks are symmetrically arranged on the two sides of the bottom end of the shooting support, and support side jacking blocks are arranged at one ends of the support bottom jacking blocks; according to the utility model, the two groups of correlation photoelectric sensors are arranged to ensure the accuracy of workpiece placement detection and improve the use quality of equipment, and meanwhile, the strip-shaped light source is adopted for side lighting to facilitate better extraction of the contours of the tooth sockets of shot pictures, and the existence and shape defects of the tooth sockets are detected through a machine vision algorithm, so that the detection efficiency is improved. When no tooth groove is detected or the tooth groove has defects, the trigger air cylinder pops up, the door plate is driven to be opened through the sliding block guide rail, and unqualified workpieces fall off from the middle.

Description

Technical Field

[0001] This utility model belongs to the field of visual inspection technology, specifically relating to a visual inspection device for an automotive seat headrest bracket. Background Technology

[0002] Car seat headrest supports play a vital role in supporting car seat headrests and improving passenger safety and comfort. The grooves on the supports serve a connecting and fixing function, making them crucial for passenger safety; therefore, quality inspection of the groove shape is essential. During the machining process, due to equipment and worker factors, grooves may be incomplete or have shape deviations, resulting in substandard car seat headrest supports. Incomplete or defective grooves in car seat headrest supports lead to substandard product quality, affecting passenger comfort and safety, and should be inspected to prevent such occurrences.

[0003] Product quality defects caused by missing or defective tooth grooves can be detected manually, but false positives can occur due to the similarity in tooth groove shapes. Therefore, visual inspection is chosen to detect them. When all tooth grooves are visually extracted and their shapes are confirmed to be consistent, it can be guaranteed that there are no quality defects in the production of car seat headrest brackets due to missing or defective tooth grooves.

[0004] Chinese Patent Application No. 202322500748.5 discloses a visual inspection device for detecting surface defects of objects, including a worktable. A slide rail is fixed to the top center of the worktable. Multiple supporting sliders are slidably connected to the slide rail. A second slide rail is located on top of each supporting slider, and a fixed slider is slidably connected to the second slide rail. A fixing clamp is installed on the top of the fixed slider. Support columns are symmetrically installed at the four corners of the top of the worktable. A light-shielding plate is fixed to one side of the upper end of each support column, and a light-shielding cloth compartment is bolted to the other side of the support column. The beneficial effect is that this invention uses the slide rail and supporting sliders to transport the object to be inspected, and utilizes the fixed slider and fixing clamp to clamp and secure the object placed on the slide rail, ensuring it is firmly fixed during transportation and less prone to displacement or falling off.

[0005] The aforementioned disclosed patent structure design is relatively complex, has high operating costs, poor object detection performance, affects the quality of equipment use, has poor applicability, is inconvenient to remove unqualified objects, and has low equipment efficiency. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a visual inspection device for automotive seat headrest supports, characterized by accurate detection, strong applicability, and high work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a visual inspection device for an automotive seat headrest bracket, comprising a base plate, a shooting bracket disposed on one side of the upper end of the base plate, camera brackets fixed on both sides of the upper end of the shooting bracket, an industrial camera disposed at the bottom end of the camera bracket, bracket bottom blocks symmetrically disposed on both sides of the bottom end of the shooting bracket, a bracket side block disposed at one end of the bracket bottom block, a headrest bracket to be inspected disposed between the bracket bottom block and the bracket side block, and a side of the headrest bracket to be inspected disposed on one side. The second headrest bracket to be tested has a horizontal through-beam photoelectric sensor on one side of the bottom top block and a vertical through-beam photoelectric sensor on one side of the side top block. Support bases are set at the four corners of the bottom of the base plate. Sliding limit blocks are symmetrically installed on the bottom surface of the base plate. A guide rail is set on one side of the sliding limit block. A cylinder fixing component is installed on one side of the guide rail. A double-outlet cylinder is installed on one side of the cylinder fixing component. Connectors are connected to both ends of the double-outlet cylinder. A door panel is installed on one side of the connector. A slider is set on the surface of the guide rail corresponding to the connector.

[0008] Preferably, a strip light source is provided on the upper surface of the base plate corresponding to the headrest bracket 1 and the headrest bracket 2 to be tested.

[0009] Preferably, the bottom end of the top block on the side of the bracket is provided with a threaded hole, which mates with the mounting hole of the base plate.

[0010] Preferably, the slider has a convex limiting block inside corresponding to the guide rail.

[0011] Preferably, the bottom of the camera bracket is provided with a waist-shaped groove corresponding to the industrial camera.

[0012] Preferably, the cylinder fixing component and the slider limiting block are both installed at the bottom end of the base plate by fastening bolts, and the connecting component and the door panel are connected by fixing bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention uses two sets of photoelectric sensors to ensure the accuracy of workpiece placement and detection, improving the quality of equipment use. Simultaneously, it employs a strip light source for side illumination, which helps to better extract the tooth groove contour from the captured image. Machine vision algorithms detect the presence and shape defects of the tooth grooves. When a missing or defective tooth groove is detected, a cylinder is triggered to pop out, causing the door panel to open via a slider guide, allowing the defective workpiece to fall out from the center. No manual removal is required, saving manpower and improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2This is a bottom view of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the motion mechanism structure of this utility model;

[0018] Figure 4 This is a flowchart of the machine vision detection algorithm for the presence or absence of tooth grooves according to this utility model.

[0019] Figure 5 This is a flowchart of the machine vision detection algorithm for determining whether the tooth groove shape is qualified according to this utility model.

[0020] In the diagram: 1. Camera bracket; 2. Industrial camera; 3. Shooting bracket; 4. Bottom top block of the bracket; 5. Side top block of the bracket; 6. Horizontal through-beam photoelectric sensor; 7. Vertical through-beam photoelectric sensor; 8. Base plate; 9. Strip light source; 10. Headrest bracket 1 to be tested; 11. Headrest bracket 2 to be tested; 12. Support base; 13. Connector; 14. Door panel; 15. Double-outlet cylinder; 16. Guide rail; 17. Slider; 18. Cylinder fixing component; 19. Slider limit block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5This utility model provides the following technical solution: a visual inspection device for an automotive seat headrest bracket, comprising a base plate 8, a shooting bracket 3 disposed on one side of the upper end of the base plate 8, camera brackets 1 fixed on both sides of the upper end of the shooting bracket 3, an industrial camera 2 disposed at the bottom end of the camera bracket 1, bracket bottom top blocks 4 symmetrically disposed on both sides of the bottom end of the shooting bracket 3, a bracket side top block 5 disposed at one end of the bracket bottom top block 4, a headrest bracket to be inspected first 10 disposed between the bracket bottom top block 4 and the bracket side top block 5, a headrest bracket to be inspected second 11 disposed on one side of the headrest bracket to be inspected first 10, and a bracket bottom... A horizontal through-beam photoelectric sensor 6 is installed on one side of the top block 4, and a vertical through-beam photoelectric sensor 7 is installed on one side of the top block 5 on the side of the bracket. Support bases 12 are installed at the four corners of the bottom of the base plate 8. Slider limit blocks 19 are symmetrically installed on the bottom surface of the base plate 8. A guide rail 16 is installed on one side of the slider limit block 19. A cylinder fixing component 18 is installed on one side of the guide rail 16. A double-outlet cylinder 15 is installed on one side of the cylinder fixing component 18. Connectors 13 are connected to both ends of the double-outlet cylinder 15. A door panel 14 is installed on one side of the connector 13. A slider 17 is installed on the surface of the guide rail 16 corresponding to the connector 13.

[0023] Specifically, a strip light source 9 is provided on the upper surface of the base plate 8 corresponding to the headrest bracket 10 and the headrest bracket 2 11 to be tested.

[0024] By adopting the above technical solution, side lighting helps to better extract the tooth groove contours of the captured image.

[0025] Specifically, the bottom end of the top block 5 on the side of the bracket is provided with a threaded hole, which mates with the mounting hole of the base plate 8.

[0026] By adopting the above technical solutions, the stability of workpiece installation is ensured, the detection accuracy is improved, and the quality of equipment use is guaranteed.

[0027] Specifically, a convex limiting block is provided inside the slider 17 corresponding to the guide rail 16.

[0028] By adopting the above technical solution, the stability of the slider 17 movement is improved, preventing it from detaching from the surface of the guide rail 16, thereby improving the quality of equipment use.

[0029] Specifically, the bottom of the camera bracket 1 is provided with a waist-shaped groove corresponding to the industrial camera 2.

[0030] By adopting the above technical solution, the installation position of the industrial camera 2 can be adjusted according to usage needs, thereby improving the applicability of the equipment.

[0031] Specifically, the cylinder fixing component 18 and the slider limiting block 19 are both installed at the bottom end of the base plate 8 by fastening bolts, and the connecting component 13 and the door panel 14 are connected by fixing bolts.

[0032] By adopting the above technical solution, the strength of the cylinder fixing component 18 and the slider limiting block 19 is guaranteed, and the stability of the equipment operation is improved.

[0033] The working principle and usage process of this utility model: When using this utility model to test the headrest bracket of a car seat, select either the headrest bracket 10 or the headrest bracket 2 11 to be tested according to the product type. The headrest bracket is positioned by bolts on one side of the bottom top block 4 and the side top block 5 of the bracket, while the strip light source 9 provides side lighting.

[0034] The horizontal through-beam photoelectric sensor 6 and the vertical through-beam photoelectric sensor 7 detect the presence or absence of a workpiece. When a workpiece is detected to be placed on the bottom plate 8, the industrial camera 2 starts to take pictures and performs detection through a visual detection algorithm.

[0035] The machine vision detection algorithm for the presence or absence of tooth grooves is as follows: First, input the captured 2D image, select 6 ROI regions of interest to be detected for tooth grooves, process them with Gaussian filtering, extract the directional gradient features, and perform template matching with the directional gradient features extracted from the tooth groove template. If the matching is successful, the tooth groove exists; if the matching fails, the tooth groove does not exist.

[0036] The visual detection algorithm for whether the tooth groove shape is qualified is as follows: First, input the captured 2D image, select 6 ROIs to be detected, stretch the contrast, extract the edges using the Canny algorithm, calculate the similarity with the standard edge, and if the similarity is within the threshold range, the product is qualified; otherwise, the product is unqualified.

[0037] When a product is defective, the double-outlet cylinder 15 pops out, and the cylinder fixing part 18 on it fixes the double-outlet cylinder 15. The moving part at the outer end of the double-outlet cylinder 15 is connected to the connecting part 13. The connecting part 13 drives the slider 17 to move. When the slider 17 moves along the guide rail 16, it is limited by the slider limit block 19, thereby driving the door panel 14 to open and causing the defective workpiece to fall out.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for a headrest bracket of a car seat comprising a base plate (8), characterized in that: The upper end of the bottom plate (8) is provided with a shooting support (3), the upper end of the shooting support (3) is fixed with a camera support (1), the bottom end of the camera support (1) is provided with an industrial camera (2), the bottom end of the shooting support (3) is symmetrically provided with a support bottom top block (4) on both sides, one end of the support bottom top block (4) is provided with a support side top block (5), a to-be-detected headrest support one (10) is arranged between the support bottom top block (4) and the support side top block (5), one side of the to-be-detected headrest support one (10) is provided with a to-be-detected headrest support two (11), one side of the support bottom top block (4) is provided with a lying type against light photoelectric sensor (6), one side of the support side top block (5) is provided with a vertical type against light photoelectric sensor (7), the bottom end of the bottom plate (8) is provided with a supporting base (12) at the four corners, the bottom end surface of the bottom plate (8) is symmetrically provided with a sliding block limiting block (19), one side of the sliding block limiting block (19) is provided with a guide rail (16), one side of the guide rail (16) is provided with a cylinder fixing piece (18), one side of the cylinder fixing piece (18) is provided with a double-outlet cylinder (15), both ends of the double-outlet cylinder (15) are connected with a connecting piece (13), one side of the connecting piece (13) is provided with a door plate (14), and the surface of the guide rail (16) is provided with a sliding block (17) corresponding to the connecting piece (13).

2. The visual inspection device of claim 1, wherein: The upper end surface of the bottom plate (8) is provided with a strip-shaped light source (9) corresponding to the to-be-detected headrest support one (10) and the to-be-detected headrest support two (11).

3. The visual inspection device of claim 1, wherein: The bottom end of the support side top block (5) is provided with a threaded hole, and the threaded hole is matched with the mounting hole of the bottom plate (8).

4. The visual inspection device of claim 1, wherein: The inside of the sliding block (17) is provided with a convex limiting block corresponding to the guide rail (16).

5. The visual inspection device of claim 1, wherein: The bottom end of the camera support (1) is provided with a waist-shaped groove corresponding to the industrial camera (2).

6. The visual inspection device of claim 1, wherein: The cylinder fixing piece (18) and the sliding block limiting block (19) are both mounted at the bottom end of the bottom plate (8) through fastening bolts, and the connecting piece (13) and the door plate (14) are connected through fixing bolts.

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