Visual inspection device for strip punching

Abstract

This utility model discloses a visual inspection device for punching holes in strip materials, including a main control system comprising an industrial all-in-one machine and a display screen, with an inspection platform formed on the industrial all-in-one machine; a servo positioning platform for positioning the strip material along the X and Y axes; a clamping mechanism located on the upper part of the inspection platform for fixing the strip material; and an imaging system electrically connected to the main control system, with its imaging lens perpendicularly aligned with the surface of the strip material. This utility model's visual inspection device for punching holes in strip materials has a simple structure, combining visual inspection technology and an automated control system. By employing image acquisition and processing algorithms, it can achieve accurate and rapid inspection of punched holes in strip materials, thereby significantly improving inspection efficiency and accuracy, and effectively reducing the missed detection rate. Simultaneously, the introduction of the automated control system ensures real-time monitoring and immediate feedback of the inspection process, further enhancing the reliability and stability of quality control.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a visual inspection device for punching holes in strip materials. Background Technology

[0002] In strip punching inspection technology, traditional manual inspection cannot guarantee accurate inspection and is prone to defects such as missed inspections, incorrect hole spacing, and foreign objects inside the holes. In current production practice, traditional manual inspection methods have revealed many shortcomings in the quality control of strip punching. Specifically, the subjectivity, speed, and accuracy limitations of manual inspection, as well as the hole spacing deviations and foreign object problems caused by operator errors, all negatively impact production efficiency and product quality. These problems not only increase the company's production costs but may also lead to quality issues during subsequent processing and use.

[0003] Based on the above-mentioned technical problems, those skilled in the art urgently need to develop a visual inspection device for strip punching that is simple in structure, improves detection efficiency and accuracy, and effectively reduces the rate of missed detections. Utility Model Content

[0004] The purpose of this invention is to provide a visual inspection device for punching strips that has a simple structure, improves detection efficiency and accuracy, and effectively reduces the rate of missed detections.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The present invention relates to a visual inspection device for punching strips, the device comprising: The main control system includes an industrial all-in-one machine and a display screen, wherein a detection platform is formed on the industrial all-in-one machine; Servo positioning platform, used to achieve X-axis and Y-axis positioning of strip material; A clamping mechanism, located at the upper end of the detection platform, is used to fix the strip material; The detection device also includes: An imaging system is electrically connected to the main control system, and the imaging lens of the imaging system is vertically aligned with the surface of the strip.

[0006] Furthermore, the servo positioning platform includes a servo motor, a synchronous belt, and a linear guide rail, and the output end of the servo motor has a matching reducer.

[0007] Furthermore, the clamping mechanism includes a pneumatic gripper, a pressure sensor, and a solenoid valve. The pneumatic gripper is controlled by the solenoid valve, and the clamping force is fed back in real time by the pressure sensor.

[0008] Furthermore, the imaging system includes an industrial camera, a coaxial light source, and a fixed-focus lens, wherein, The industrial camera is an area array camera, and the axis of the fixed-focus lens is perpendicular to the surface of the strip.

[0009] The visual inspection device for punching strips provided by this utility model, as described above, has the following beneficial effects: This utility model presents a simple visual inspection device for strip punching, combining visual inspection technology with an automated control system. By employing image acquisition and processing algorithms, it achieves accurate and rapid inspection of strip punching, significantly improving inspection efficiency and accuracy while effectively reducing the false negative rate. Simultaneously, the introduction of the automated control system ensures real-time monitoring and immediate feedback of the inspection process, further enhancing the reliability and stability of quality control. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0011] Figure 1 A schematic diagram of the overall structure of the visual inspection device for punching strips provided in this embodiment of the utility model; Figure 2 A flowchart illustrating the operation of the visual inspection device for punching strips provided in this embodiment of the utility model.

[0012] Explanation of reference numerals in the attached figures: 1. Industrial all-in-one machine; 2. Display screen; 3. Clamping mechanism; 4. Imaging system; 101. Testing platform. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0014] See Figures 1-2 As shown; The present invention relates to a visual inspection device for punching strips, the device comprising: The main control system includes an industrial all-in-one machine 1 and a display screen 2, wherein a detection platform 101 is formed on the industrial all-in-one machine 1; Servo positioning platform, used to achieve X-axis and Y-axis positioning of strip material; The clamping mechanism 3 is located at the upper end of the detection platform 101 and is used to fix the strip material; The detection device also includes: Imaging system 4 is electrically connected to the main control system, and the imaging lens of imaging system 4 is vertically aligned with the surface of the strip.

[0015] As a further description of this embodiment, the servo positioning platform includes a servo motor, a synchronous belt, and a linear guide rail, and the output end of the servo motor has a matching reducer. The servo motor drives the positioning platform (accuracy ±0.02mm) through the synchronous belt.

[0016] As a further description of this embodiment, the clamping mechanism 3 includes a pneumatic gripper, a pressure sensor, and a solenoid valve. The pneumatic gripper is controlled by the solenoid valve and the clamping force is fed back in real time by the pressure sensor to prevent the strip from deforming.

[0017] As a further description of this embodiment, the imaging system 4 includes an industrial camera, a coaxial light source, and a fixed-focus lens, wherein, The industrial camera is an area array camera, and the axis of the fixed-focus lens is perpendicular to the surface of the strip.

[0018] Customized light source: Coaxial light source, which illuminates evenly through a diffuser plate, eliminating reflection interference and highlighting defects inside the hole (such as burrs and iron filings).

[0019] The main control system set up in this embodiment mainly includes the following two parts: (1) Hardware: Industrial all-in-one machine 1, integrating gigabit network port (to connect camera), interface (to connect servo driver), IO control board (to control solenoid valve and alarm device), equipped with 10.1-inch display screen 2.

[0020] (2) Software: Detection software developed based on Hikvision's visual algorithm library, including: Image preprocessing module (denoising, contrast enhancement); Feature extraction module (hole location, edge detection, hole diameter measurement); Defect detection module (hole spacing calculation, foreign object identification algorithm in hole, convolutional neural network model based on deep learning training).

[0021] The auxiliary modules include: (1) Alarm device: red LED warning light + buzzer, which is triggered synchronously in case of abnormality.

[0022] (2) Industrial control cabinet: integrates power filter and circuit breaker, with protection level of IP54, suitable for industrial environment.

[0023] The working principle of the strip punching visual inspection device provided in this embodiment is as follows: Positioning: The servo driver receives instructions from the main control system and drives the positioning platform to move to the designated inspection station, where the pneumatic grippers clamp the strip (positioning time < 2 seconds). Image acquisition: The light source is turned on (pulse width 10ms), the camera is exposed synchronously, and the image of the punching area of ​​the strip is acquired (single image acquisition time < 20ms), and transmitted to the main control system via gigabit network; Image processing and analysis: includes the following steps: Step 1, Preprocessing: Median filtering is used to remove noise, and histogram equalization is used to enhance contrast; Step 2, Hole location identification: Extract the hole outline using the edge detection algorithm (Canny operator), calculate the center coordinates and radius, compare with the standard template, and determine whether the hole diameter is qualified (tolerance ±0.05mm). Step 3, hole spacing calculation: Calculate the spacing between adjacent holes based on the center coordinates, with an allowable error of ±0.1mm; Step 4, In-hole inspection: Identify foreign objects inside the hole through regional grayscale analysis (defects are judged when the grayscale value difference is >50), and eliminate interference by combining morphological filtering.

[0024] Results output and control: Pass: The main control system sends a signal to the device; Abnormality: The alarm device is triggered, the screen displays the defect type (such as "hole spacing out of tolerance" or "foreign object in hole"), and the servo system locks the positioning platform, waiting for manual handling.

[0025] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A visual inspection device for punching holes in strip materials, characterized in that, The detection device includes: The main control system includes an industrial all-in-one machine (1) and a display screen (2), wherein a detection platform (101) is formed on the industrial all-in-one machine (1). Servo positioning platform, used to achieve X-axis and Y-axis positioning of strip material; A clamping mechanism (3) is located at the upper end of the detection platform (101) and is used to fix the strip material; The detection device also includes: The imaging system (4) is electrically connected to the main control system, and the imaging lens of the imaging system (4) is vertically aligned with the surface of the strip.

2. The visual inspection device for punching strips according to claim 1, characterized in that, The servo positioning platform includes a servo motor, a synchronous belt, and a linear guide rail, and the output end of the servo motor has a matching reducer.

3. The visual inspection device for punching strips according to claim 1, characterized in that, The clamping mechanism (3) includes a pneumatic gripper, a pressure sensor and a solenoid valve. The pneumatic gripper is controlled by the solenoid valve and the clamping force is fed back in real time by the pressure sensor.

4. The visual inspection device for punching strips according to claim 1, characterized in that, The imaging system (4) includes an industrial camera, a coaxial light source, and a fixed-focus lens, wherein, The industrial camera is an area array camera, and the axis of the fixed-focus lens is perpendicular to the surface of the strip.

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