A steel strip edge monitoring device

Abstract

A strip edge monitoring device includes a vision system and a vision light source. The camera mounting frame of the vision system spans across the strip, with a camera mounted at the upper center of the frame. The vision light source is located on the lower side of the strip, directly below the camera. This strip edge monitoring device continuously monitors the position of a light source obscured by the strip through the vision system, improving the quality and safety of strip production.

Description

Technical Field

[0001] This utility model relates to the field of strip steel production technology for fully continuous strip steel production lines. Background Technology

[0002] During strip steel production, due to issues such as strip thickness and shape, the strip may deviate from its center position. This can lead to instability in the production process and safety problems such as edge cutting and strip breakage. The CPC (Center Position Alignment) device on the production line is designed to address this issue. When the strip deviates from the centerline, the device uses a mechanical structure to actively adjust in real time, ensuring the strip remains centered. Typically, the CPC is independently controlled by a PLC, and a few related signals are transmitted to the main PLC via communication.

[0003] In some cases, when the CPC experiences communication, sensor failure, mechanical failure, or signal failure, the main PLC cannot obtain the signal indicating that the CPC is operating normally, and therefore cannot perform emergency handling, leading to production safety accidents. Summary of the Invention

[0004] To address the aforementioned problems in existing strip steel production lines, this utility model provides a strip steel edge monitoring device.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a strip edge monitoring device, including a vision system 4 and a vision light source 5. The camera mounting frame 42 of the vision system 4 is installed across the strip 2, and the camera is installed at the upper center of the camera mounting frame 42; the vision light source 5 is located on the lower side of the strip 2 and is installed directly below the camera.

[0006] The camera mounting frame 42 includes two side columns 421, a crossbeam 422 is installed between the tops of the two side columns 421, a camera mounting bracket 423 is installed on one side of the crossbeam 422, a camera cover 41 is installed on the camera mounting bracket 423, a camera is installed inside the camera cover 41, a reinforcing beam 424 is installed between the two side columns 421 below the crossbeam 422, and a mounting base 425 is provided at the bottom of the column 421.

[0007] The visual light source 5 includes an upper bracket 53 and a lower bracket 54. The upper end of the lower bracket 54 is provided with bolt holes, and the lower side of the upper bracket 53 is provided with connecting ears 56. The upper bracket 53 and the lower bracket 54 are connected by connecting ears 56 and bolts 55. The light source 52 is installed on the upper bracket 53, and a protective light-concentrating plate 51 is installed on the upper bracket 53 outside the light source 52.

[0008] The length of the visual light source 5 is greater than the sum of the maximum dimension and the maximum positional offset of the strip 2.

[0009] The camera's field of view is greater than the length of the light source.

[0010] The strip edge monitoring device of this invention continuously monitors the position of light sources blocked by the strip through a vision system, thereby improving the quality and safety of strip production. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the application of the strip edge monitoring device of this utility model in a strip production line.

[0012] Figure 2 This is a side view of the strip edge monitoring device of this utility model.

[0013] Figure 3 This is the front view of the strip edge monitoring device of this utility model.

[0014] Figure 4 This is a top view of the strip edge monitoring device of this utility model.

[0015] Figure 5 This is a structural diagram of the camera mounting frame of the steel strip edge monitoring device of this utility model.

[0016] Figure 6 This is a structural diagram of the visual light source of the strip edge monitoring device of this utility model.

[0017] Figure 7 This is a side view of the visual light source of the strip edge monitoring device of this utility model.

[0018] Figure 8 This is the main view of the visual light source of the strip edge monitoring device of this utility model.

[0019] Figure 9 This is a structural diagram of the visual light source support for the strip edge monitoring device of this utility model.

[0020] Figure 10 This is a structural diagram of the visual light source support for the strip edge monitoring device of this utility model.

[0021] Figure 11 This is a structural diagram of the light source of the strip edge monitoring device of this utility model.

[0022] Figure 12 This is a structural diagram of the protective focusing plate of the visual light source of the strip edge monitoring device of this utility model.

[0023] Figure 13 This is a structural diagram of the camera cover of the vision system of the strip steel edge monitoring device of this utility model.

[0024] In the diagram: 1. CPC, 2. Strip steel, 3. Steering roller, 4. Vision system, 5. Vision light source, 6. Tension roller, 41. Camera housing, 42. Camera mounting frame, 421. Column, 422. Crossbeam, 423. Camera mounting bracket, 424. Reinforcing beam, 425. Mounting base, 51. Protective focusing plate, 52. Light source, 53. Upper bracket, 54. Lower bracket, 55. Bolt, 56. Connecting lug. Detailed Implementation

[0025] The strip edge monitoring device of this utility model consists of a vision system 4 and a vision light source 5, such as... Figure 1 As shown, this device is installed on a fully continuous strip steel production line for real-time monitoring of the strip's edge position. It is mounted between the C-direction roller 3 and the tension roller 6. The vision light source 5 is located below the strip 2, and its length is greater than the sum of the maximum dimension and maximum positional offset of the produced strip. The vision system 4 mainly consists of an industrial camera, mounted directly above the light source, with a field of view greater than the length of the light source.

[0026] like Figure 3 As shown, two sets of vision light sources 5 are installed below the strip steel 2, one set on the operating side and one set on the transmission side, equidistant from the center of the strip steel 2, with the light sources pointing vertically upwards. A camera mounting frame 42 spans the strip steel 2, with the camera mounted in the middle of the frame, pointing vertically downwards. The distance between the camera mounting frame 42 and the light sources must ensure that the camera is directly above the light sources. Figure 2-5 and Figure 13 As shown, the camera mounting frame consists of columns 421, crossbeams 422, reinforcing beams 424, mounting feet 425, and camera mounting brackets 423. The feet are made of 10mm steel plates, the camera mounting brackets are made of 60mm square steel pipes, and the columns, crossbeams, and reinforcing beams are made of 180mm I-beams. The camera mounting frame is welded together and fixed to the ground using expansion bolts. A crossbeam 422 is installed between the tops of the two columns 421. A camera mounting bracket 423 is installed on one side of the crossbeam 422. A camera housing 41 is installed on the camera mounting bracket 423, and the camera is installed inside the camera housing 41. A reinforcing beam 424 is installed between the two columns 421 below the crossbeam 422. Mounting feet 425 are provided at the bottom of the columns 421.

[0027] like Figure 6-12As shown, the light source consists of an upper bracket 53, a lower bracket 54, a light source 52, and a protective focusing plate 51. The lower bracket 54 has bolt holes at its upper end, and the upper bracket 53 has connecting ears 56 on its lower side. The upper bracket 53 and lower bracket 54 are connected by connecting ears 56 and bolts 55. The light source 52 is mounted on the upper bracket 53, and the protective focusing plate 51 is mounted on the upper bracket 53 outside the light source 52. The lower bracket 54 is mounted on the ground using feet, and the upper bracket 53 is used to mount the light source 52. The upper and lower brackets are secured with bolts. After loosening the bolts, the upper bracket 53 can be slightly adjusted to align the light source with the camera. Then, the bolts are tightened to fix the angle of the upper bracket 53, thus fixing the direction of the light source.

[0028] like Figure 11 As shown, the light source consists of an LED array, an aluminum alloy housing, angled sides, and an internal focusing plate. It is mounted on a bracket via feet, and the mounting holes at the top are used to install the protective focusing plate 51.

[0029] like Figure 12 As shown, the protective focusing plate 51 is welded from 3mm thick stainless steel and is installed on top of the light source to prevent the steel strip from directly impacting the light source.

[0030] like Figure 13 As shown, the camera housing 41 is an air-cooled stainless steel housing. Made of 304 stainless steel, the housing's interlayer is vented with compressed air for cooling, reducing the internal temperature. Simultaneously, compressed air blows across the lens surface to ensure its cleanliness.

[0031] Working principle: Light source 5 is located below strip 2. The strip 2 blocks the light source 5, forming the strip width profile. An industrial camera is positioned vertically above the light source 5, acquiring image signals in real time and transmitting them to the monitoring and control systems to obtain data such as strip width and edge position, providing information such as offset speed and offset amount. The position of the light source blocked by the strip is continuously monitored by a vision system.

Claims

1. A strip steel edge monitoring device, characterised in that: The system includes a vision system (4) and a vision light source (5). The camera mounting frame (42) of the vision system (4) is mounted across the strip steel (2), and the camera is mounted at the upper center of the camera mounting frame (42). The vision light source (5) is located on the lower side of the strip steel (2) and is mounted directly below the camera. The length of the vision light source (5) is greater than the sum of the maximum size and the maximum position offset of the strip steel (2), and the camera's field of view is greater than the length of the light source.

2. A strip edge monitoring device according to claim 1, characterised in that: The camera mounting frame (42) includes two side columns (421), a crossbeam (422) is installed between the tops of the two side columns (421), a camera mounting bracket (423) is installed on one side of the crossbeam (422), a camera cover (41) is installed on the camera mounting bracket (423), a camera is installed inside the camera cover (41), a reinforcing beam (424) is installed between the two side columns (421) below the crossbeam (422), and a mounting base (425) is provided at the bottom of the column (421).

3. A strip edge monitoring device according to claim 1, characterised in that: The visual light source (5) includes an upper bracket (53) and a lower bracket (54). The lower bracket (54) has bolt holes at its upper end, and the upper bracket (53) has connecting ears (56) on its lower side. The upper bracket (53) and the lower bracket (54) are connected by connecting ears (56) and bolts (55). A light source (52) is installed on the upper bracket (53), and a protective light-concentrating plate (51) is installed on the upper bracket (53) outside the light source (52).

Images