Intelligent identification and marking system for defects on surface of galvanized layer

By designing an intelligent defect identification and marking system for galvanized sheet surfaces, and utilizing a conveyor and an adjustable identification and marking mechanism, the system enables simultaneous double-sided inspection and automatic defect marking of galvanized sheets. This solves the problem of inconvenient inspection in existing technologies and improves efficiency and adaptability.

CN224581428UActive Publication Date: 2026-07-31ZHENJIANG DAQO RAILWAY EQUIP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHENJIANG DAQO RAILWAY EQUIP CO LTD
Filing Date
2025-07-09
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing galvanized layer inspection devices are not convenient for marking defect locations and cannot perform double-sided inspection, resulting in the need for manual marking later, which is inefficient.

Method used

A system comprising a first conveyor, a second conveyor, and an identification and marking mechanism was designed. The system utilizes a line scan camera and an ultraviolet laser marking machine to perform double-sided synchronous inspection and defect location marking on galvanized sheets. The system achieves adaptive inspection for different sheet thicknesses and locations through an adjustable support structure and cylinders.

Benefits of technology

It enables continuous double-sided inspection of galvanized sheets and automatic marking of defect locations, improving inspection efficiency, adapting to sheets of different thicknesses, and simplifying subsequent repair work.

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Abstract

This utility model relates to the field of defect recognition technology and discloses an intelligent defect recognition and marking system for the surface of galvanized layers. It solves the problems of existing detection systems being inconvenient for marking defect locations and for achieving double-sided inspection. The system includes a first conveyor, a second conveyor, and a recognition and marking mechanism. The recognition and marking mechanism is located between the first and second conveyors. A display screen is installed on one side of the top of the first conveyor, and a controller is installed at the bottom of the first conveyor. The recognition and marking mechanism consists of a support plate, a strip support plate, several line scan cameras, a second strip support plate, several second line scan cameras, a support base, a first ultraviolet laser marking machine, a second support base, and a second ultraviolet laser marking machine. Through this system, it is possible to detect and mark defects in the galvanized layer, and simultaneously achieve double-sided inspection.
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Description

Technical Field

[0001] This utility model belongs to the field of defect recognition technology, specifically a smart defect recognition and marking system for the surface of a galvanized layer. Background Technology

[0002] The galvanizing process of sheet metal may result in defects such as incomplete galvanizing, friction black spots, zinc dross, and air knife streaks. Therefore, after galvanizing, it is usually necessary to inspect the galvanized layer for defects. Currently, most defect detection is achieved using line scan cameras. However, existing detection devices are not convenient for marking the defect locations, and manual marking of the defect locations based on the detection coordinates is still required later, which is quite troublesome. Moreover, existing detection devices are not convenient for simultaneously inspecting the galvanized layers on both sides of the sheet metal. Therefore, this application proposes an intelligent identification and marking system for defects on the surface of the galvanized layer. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides an intelligent identification and marking system for defects on the surface of galvanized layers, which effectively solves the problems that existing detection systems are not convenient for marking defect locations and for achieving double-sided detection.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an intelligent identification and marking system for defects on the surface of a galvanized layer, comprising a first conveyor, a second conveyor, and an identification and marking mechanism, wherein the identification and marking mechanism is located between the first conveyor and the second conveyor, a display screen is provided on one side of the top of the first conveyor, and a controller is provided at the bottom of the first conveyor;

[0005] The identification marking mechanism consists of a support plate, a strip support plate 1, several line scan cameras 1, a strip support plate 2, several line scan cameras 2, a support base 1, an ultraviolet laser marking machine 1, a support base 2, and an ultraviolet laser marking machine 2. The strip support plate 1 and the strip support plate 2 are respectively connected to the top and bottom of the front of the support plate. The line scan camera 1 is fixedly connected to the bottom of the strip support plate 1, and the line scan camera 2 is fixedly connected to the top of the strip support plate 2. The support base 1 and the support base 2 are both connected to the side of the support plate near the second conveyor. The ultraviolet laser marking machine 1 is connected to the support base 1, and the ultraviolet laser marking machine 2 is connected to the support base 2.

[0006] Preferably, a limiting vertical groove is formed at the top of the front of the support plate, a lead screw is rotatably installed inside the limiting vertical groove, a handwheel is fixedly installed at the top of the lead screw, and one end of the strip support plate is slidably connected to the inside of the limiting vertical groove and threadedly connected to the lead screw.

[0007] Preferably, the support plate has a vertical through groove communicating with the limiting vertical groove on the side near the support base. An L-shaped support arm is slidably arranged inside the vertical through groove. One end of the L-shaped support arm is fixedly connected to the strip support plate and the other end of the L-shaped support arm is fixedly connected to the support base.

[0008] Preferably, a stroke cylinder is provided through the first support base, and a UV laser marking machine is fixedly connected to one end of the stroke cylinder. A stroke cylinder is provided through the second support base, and a UV laser marking machine is fixedly connected to one end of the stroke cylinder.

[0009] Preferably, both the first line scan camera and the second line scan camera are arranged in a straight line.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) In operation, by setting up a first conveyor and a second conveyor, the galvanized sheet can be continuously conveyed, thereby enabling continuous inspection and improving work efficiency;

[0012] (2) By setting up an identification and marking mechanism consisting of a support plate, a strip support plate 1, several line array cameras 1, a strip support plate 2, several line array cameras 2, a support base 1, an ultraviolet laser marking machine 1, a support base 2 and an ultraviolet laser marking machine 2, it is possible to perform double-sided synchronous defect detection on galvanized sheets and to mark the defect locations with laser.

[0013] (3) By setting a limiting vertical groove, a lead screw, a handwheel, a vertical through groove and an L-shaped support arm, the height of the line array camera one and the ultraviolet laser marking machine one can be adjusted, so as to adapt to the detection of galvanized sheets of different thicknesses. By setting a stroke cylinder one and a stroke cylinder two, the positions of the ultraviolet laser marking machine one and the ultraviolet laser marking machine two can be adjusted, so as to mark different positions of the galvanized sheets. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is one of the schematic diagrams of the intelligent identification and marking system for defects on the surface of the galvanized layer of this utility model;

[0017] Figure 2 This is the second schematic diagram of the intelligent identification and marking system for defects on the galvanized layer surface of this utility model;

[0018] Figure 3 This is a schematic diagram of the identification marking mechanism of this utility model;

[0019] In the diagram: 1. First conveyor; 2. Second conveyor; 3. Identification marking mechanism; 4. Display screen; 5. Controller; 6. Support plate; 7. Strip support plate one; 8. Linear array camera one; 9. Strip support plate two; 10. Linear array camera two; 11. Support seat one; 12. Ultraviolet laser marking machine one; 13. Support seat two; 14. Ultraviolet laser marking machine two; 15. Limiting vertical groove; 16. Lead screw; 17. Handwheel; 18. Vertical through groove; 19. L-shaped support arm; 20. Stroke cylinder one; 21. Stroke cylinder two. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1 to 3 The present invention provides an intelligent identification and marking system for defects on the surface of a galvanized layer, comprising a first conveyor 1, a second conveyor 2, and an identification and marking mechanism 3. The identification and marking mechanism 3 is located between the first conveyor 1 and the second conveyor 2. A display screen 4 is provided on one side of the top of the first conveyor 1, and a controller 5 is provided at the bottom of the first conveyor 1.

[0022] The first conveyor 1 and the second conveyor 2 transport galvanized sheets, thereby enabling continuous inspection and improving work efficiency;

[0023] The identification marking mechanism 3 consists of a support plate 6, a strip support plate 7, several line scan cameras 8, a strip support plate 9, several line scan cameras 10, a support base 11, an ultraviolet laser marking machine 12, a support base 13, and an ultraviolet laser marking machine 14. The strip support plate 7 and the strip support plate 9 are respectively connected to the top and bottom of the front of the support plate 6. The line scan camera 8 is fixedly connected to the bottom of the strip support plate 7, and the line scan camera 10 is fixedly connected to the top of the strip support plate 9. The support base 11 and the support base 13 are both connected to the side of the support plate 6 near the second conveyor 2. The ultraviolet laser marking machine 12 is connected to the support base 11, and the ultraviolet laser marking machine 14 is connected to the support base 13.

[0024] Line scan camera 18 and line scan camera 210 enable simultaneous detection of the top and bottom surfaces of galvanized sheet metal. UV laser marking machine 12 and UV laser marking machine 214 simultaneously mark the locations of detected defects according to their coordinates, facilitating subsequent repair of the defects.

[0025] A limiting vertical groove 15 is provided at the top of the front of the support plate 6. A screw rod 16 is rotatably installed inside the limiting vertical groove 15. A handwheel 17 is fixedly installed at the top of the screw rod 16. One end of the strip support plate 7 is slidably connected to the inside of the limiting vertical groove 15 and threadedly connected to the screw rod 16.

[0026] The height of the line scan camera 8 can be adjusted according to the thickness of the galvanized sheet. To adjust, turn the handwheel 17, which will drive the strip support plate 7 to rise or fall via the lead screw 16.

[0027] The support plate 6 has a vertical through groove 18 that communicates with the limiting vertical groove 15 on the side near the support base 11. An L-shaped support arm 19 is slidably arranged inside the vertical through groove 18. One end of the L-shaped support arm 19 is fixedly connected to the strip support plate 7, and the other end of the L-shaped support arm 19 is fixedly connected to the support base 11.

[0028] When adjusting the height, the L-shaped support arm 19 is raised and lowered synchronously through the strip support plate 7, the L-shaped support arm 19 drives the support base 11 to rise and fall, and the support base 11 drives the ultraviolet laser marking machine 12 to rise and fall.

[0029] A stroke cylinder 20 is installed through the support base 11, and a UV laser marking machine 12 is fixedly connected to one end of the stroke cylinder 20. A stroke cylinder 21 is installed through the support base 23, and a UV laser marking machine 24 is fixedly connected to one end of the stroke cylinder 21.

[0030] Stroke cylinder 1 20 and stroke cylinder 2 21 can drive UV laser marking machine 1 12 and UV laser marking machine 2 14 to move quickly, which can increase the marking range;

[0031] Both the Line Scan Camera 1 (8) and the Line Scan Camera 2 (10) have a linear arrangement structure, which can increase the detection range.

[0032] In operation, the system is equipped with a first conveyor and a second conveyor, enabling continuous conveying of galvanized sheets and thus continuous inspection, improving work efficiency. A marking mechanism, consisting of a support plate, a strip support plate, several line-scan cameras, a second strip support plate, several second line-scan cameras, a support base, a UV laser marking machine, a support base, and a UV laser marking machine, allows for simultaneous double-sided defect inspection of the galvanized sheets and laser marking of defect locations. A limiting vertical groove, lead screw, handwheel, vertical through groove, and L-shaped support arm allow for height adjustment of the line-scan camera and the UV laser marking machine, accommodating inspection of galvanized sheets of varying thicknesses. Stroke cylinders one and two allow for position adjustment of the UV laser marking machines, enabling marking at different locations on the galvanized sheets.

Claims

1. A system for intelligent identification and marking of defects on a galvanized layer surface, comprising a first conveyor (1), a second conveyor (2) and an identification and marking mechanism (3), characterized in that: The identification marking mechanism (3) is located between the first conveyor (1) and the second conveyor (2). A display screen (4) is provided on one side of the top of the first conveyor (1), and a controller (5) is provided at the bottom of the first conveyor (1). The identification marking mechanism (3) consists of a support plate (6), a strip support plate (7), several line scan cameras (8), a strip support plate (9), several line scan cameras (10), a support base (11), an ultraviolet laser marking machine (12), a support base (13), and an ultraviolet laser marking machine (14). The strip support plate (7) and the strip support plate (9) are respectively connected to the top and bottom of the front of the support plate (6). The line scan camera (8) is fixedly connected to the bottom of the strip support plate (7). The line scan camera (10) is fixedly connected to the top of the strip support plate (9). The support base (11) and the support base (13) are both connected to the side of the support plate (6) near the second conveyor (2). The ultraviolet laser marking machine (12) is connected to the support base (11), and the ultraviolet laser marking machine (14) is connected to the support base (13).

2. The intelligent identification and marking system for defects on the surface of a galvanized layer according to claim 1, characterized in that: The top of the front of the support plate (6) has a limiting vertical groove (15), and a screw rod (16) is rotatably installed inside the limiting vertical groove (15). A handwheel (17) is fixedly installed at the top of the screw rod (16). One end of the strip support plate (7) is slidably connected to the inside of the limiting vertical groove (15) and threadedly connected to the screw rod (16).

3. The intelligent identification and marking system for defects on the surface of a galvanized layer according to claim 2, characterized in that: The support plate (6) has a vertical through groove (18) on the side near the support base (11) that communicates with the limiting vertical groove (15). An L-shaped support arm (19) is slidably arranged inside the vertical through groove (18). One end of the L-shaped support arm (19) is fixedly connected to the strip support plate (7), and the other end of the L-shaped support arm (19) is fixedly connected to the support base (11).

4. The intelligent identification and marking system for defects on the surface of a galvanized layer according to claim 1, characterized in that: A stroke cylinder (20) is installed through the support base (11), and a UV laser marking machine (12) is fixedly connected to one end of the stroke cylinder (20). A stroke cylinder (21) is installed through the support base (13), and a UV laser marking machine (14) is fixedly connected to one end of the stroke cylinder (21).

5. The intelligent identification and marking system for defects on the surface of a galvanized layer according to claim 1, characterized in that: Both the line array camera one (8) and the line array camera two (10) are arranged in a straight line.