Edge wire breakage prevention monitoring device of push-pull pickling line

Abstract

The utility model discloses a push-pull type pickling line edge wire breakage prevention monitoring device, and relates to the technical field of strip steel pickling lines, the push-pull type pickling line edge wire breakage prevention monitoring device comprises a light shield which is erected between a drying section and an edge wire cutting section of a pickling line and shields strip steel below, and only the bottom of the light shield is provided with an opening; the light source belt is mounted in the strip steel conveying line, is opposite to the light shield in position and is positioned below the strip steel; the two identification cameras are mounted and erected in the light shielding shell, are located at the two ends in the light shielding shell and can identify the length X1 of the lower light source strip; the partition plate is installed in the light shield and divides the light shield into two downward parts, the recognition camera is located above the partition plate, and an installation hole is formed in the position, right opposite to the recognition camera, of the partition plate; and the convex lens is mounted in the mounting hole. The device has the effects that the probability of strip steel edge wire breakage is reduced, and the product quality of strip steel passing through the pickling unit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strip steel pickling unit, in particular to a push-pull type pickling unit edge wire breakage monitoring device. BACKGROUND

[0002] The existing push-pull type pickling unit will cut the edge wire of the strip steel after hot rolling, thereby improving the quality of the strip steel product.

[0003] After hot rolling, the strip steel generally has a camber, and there is also a certain amount of deviation in the strip steel, thereby causing the width of the cut edge wire to change dynamically. After the edge wire is cut, it will be curled by the edge wire roller. The edge wire will have a certain tension during the curling process. Generally speaking, the speed of the edge wire roller has a certain proportional relationship with the conveying speed of the strip steel. However, due to the different thicknesses of the edge wire and the different positions of the edge wire on the edge wire roller during winding, the tension generated will also change. The change in the width of the edge wire will change the degree of stress, thereby causing the edge wire to be pulled off. When this situation occurs, it is necessary to stop the machine, and it will take about 5 minutes to resume production, which will seriously affect the quality of the pickling of the strip steel.

[0004] Although the existing edge wire curling motor can adjust the speed of the edge wire winding through the torque sensor to balance the tension value of the edge wire, thereby reducing the probability of edge wire breakage. However, due to the existence of the camber, the thickness of the edge wire will change, and when the width of the edge wire is small, the edge wire will also be pulled off. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to improve the problem that the existing pickling unit edge wire curling method is easy to cause the edge wire to be pulled off and cause the pickling unit to stop, and reduce the quality of the strip steel production. The present application provides a push-pull type pickling unit edge wire breakage monitoring device.

[0006] The push-pull type pickling unit edge wire breakage monitoring device provided by the present application adopts the following technical scheme:

[0007] A push-pull type pickling unit edge wire breakage monitoring device, comprising

[0008] A light shield is erected between the drying section and the edge wire cutting section of the pickling unit, shields the strip steel below, and only the bottom is open;

[0009] A light source strip is installed in the strip steel conveying line and is opposite to the light shield and located below the strip steel;

[0010] The recognition camera is arranged in the light shielding shell and positioned at two ends of the light shielding shell, capable of recognizing the length X1 of the light source below, and the speed value required by the strip steel conveying is obtained through a formula input into the control system to adjust the conveying speed of the strip steel in real time;

[0011] The partition plate is arranged in the light shielding shell and divides the light shielding shell into two downward parts, the recognition camera is positioned above the partition plate, and a mounting hole is arranged opposite the recognition camera;

[0012] The convex lens is arranged in the mounting hole.

[0013] Optionally, the light shielding shell extends downward to abut against the frame of the strip steel conveying device at both sides of the strip steel.

[0014] Optionally, the part of the light shielding shell above the strip steel is horizontally extended and provided with a light shielding plate.

[0015] Optionally, the light shielding shell is divided into two parts capable of being buckled by a vertical plane perpendicular to the conveying direction of the strip steel, the recognition camera and the partition plate are arranged in one of the two parts, the two parts of the light shielding shell are fixed by bolts after being buckled, and the part of the light shielding shell provided with the recognition camera is fixed and arranged.

[0016] Optionally, the top of the light shielding shell is fixedly provided with a buckle plate, and the buckle plate is provided for the wire to pass through.

[0017] Optionally, the frame of the strip steel conveying line is provided with two stabilizing rollers, and the two stabilizing rollers are positioned at both sides of the light shielding shell and are in pressure contact with the upper surface of the strip steel.

[0018] Optionally, the circumferential outer wall of the stabilizing roller is made of rubber.

[0019] Optionally, the bottom of the mounting hole can hold the convex lens, the light shielding plate is provided with a pressure ring plate arranged by bolts, and the bottom of the pressure ring plate is in abutment with the edge part of the upper surface of the convex lens.

[0020] As described above, the present application has at least one of the following beneficial technical effects:

[0021] 1. The shadow of the strip steel is presented on the light source lamp and is reflected into the recognition lens by the convex lens, the recognition lens processes the image and calculates the width of the edge wire cut on this side of the strip steel, then the control system is used to calculate the speed adjustment of the strip steel conveying line and change the conveying speed of the strip steel conveying line in real time, so that the conveying speed of the strip steel conveying line is adapted to the winding speed of the edge wire, thereby reducing the probability of the strip steel edge wire being broken, and the light shielding shell can effectively reduce the error of the strip steel shadow recognition;

[0022] 2. The light shielding plate can effectively reduce the penetration of external light sources at the edge of the light shielding shell without contacting the strip steel, thereby improving the recognition accuracy of the recognition camera on the strip steel shadow.

[0023] 3. The setting of the stabilizing roller can reduce the remaining disturbance of the strip by pressing the strip at both ends of the light shielding shell, reduce the error of strip width identification, and the material setting of the stabilizing roller can also effectively absorb the vibration of the strip. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0025] Figure 2 is a partial schematic diagram showing the position of the light source strip;

[0026] Figure 3 is a partial exploded view showing the position of the identification camera;

[0027] Figure 4 is a partial cross-sectional view showing the convex lens.

[0028] In the figure, 1, light shield; 11, partition; 111, mounting hole; 112, compression ring plate; 12, light shield plate; 13, buckle plate; 2, light source strip; 3, identification camera; 4, convex lens; 5, stabilizing roller. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figures 1-4 The present application will be further described in detail.

[0030] The embodiment of the present application discloses a push-pull type pickling unit edge wire breakage monitoring device.

[0031] Reference Figure 1 , Figure 2 and Figure 3 The push-pull type pickling unit edge wire breakage monitoring device comprises a light shield 1, a light source strip 2, an identification camera 3, a convex lens 4 and a stabilizing roller 5. The light shield 1 is erected at a position between the drying end and the edge wire cutting section of the pickling unit, used for shielding the strip below, and the light shielding shell is only provided with an opening at the bottom. The light shield 1 extends downward at both sides of the strip to abut against the frame body of the strip conveying equipment. The part of the light shielding shell bottom above the strip is horizontally extended and provided with a light shield plate 12.

[0032] Reference Figure 3 and Figure 4The light source strip 2 is installed in the strip conveying line and is located below the strip opposite to the light shield 1. The identification camera 3 is two and is installed in the light shield and is located at the two ends of the light shield. The lens of the identification camera 3 is downwardly arranged and is located directly above the light source strip 2. The identification camera 3 is a CCD camera in this embodiment and can identify the length X1 of the light source strip 2 below. The required rotating speed value of the strip conveying is obtained through a formula input into the control system and the strip conveying speed is adjusted in real time. The light shield 1 is provided with a partition plate 11 which divides the light shield 1 into two parts and the identification camera 3 is located above the partition plate 11. The partition plate 11 is provided with a mounting hole 111 at the position opposite to the identification camera 3 and the convex lens 4 is placed in the mounting hole 111. The mounting hole 111 can hold the convex lens 4. The light shield 1 is divided into two parts which can be buckled by a vertical plane perpendicular to the conveying direction of the strip. The identification camera 3 and the partition plate 11 are located in one of the two parts. The two parts of the light shield 1 are buckled and fixed by bolts. The part of the light shield 1 provided with the identification camera 3 is fixed and arranged. The buckle plate 13 is located on the light shield provided with the identification camera 3. Two stabilizing rollers 5 are installed on the frame of the strip conveying line and are located on both sides of the light shield 1 and are in pressure contact with the upper surface of the strip. The circumferential outer wall of the stabilizing roller 5 is made of rubber.

[0033] The light shield 1 is divided into two parts which can be buckled by a vertical plane perpendicular to the conveying direction of the strip. The identification camera 3 and the partition plate 11 are located in one of the two parts. The two parts of the light shield 1 are buckled and fixed by bolts. The part of the light shield 1 provided with the identification camera 3 is fixed and arranged. The buckle plate 13 is located on the light shield provided with the identification camera 3. Two stabilizing rollers 5 are installed on the frame of the strip conveying line and are located on both sides of the light shield 1 and are in pressure contact with the upper surface of the strip. The circumferential outer wall of the stabilizing roller 5 is made of rubber.

[0034] The light source strip 2 is installed in the strip conveying line and is located below the strip opposite to the light shield 1. The identification camera 3 is two and is installed in the light shield and is located at the two ends of the light shield. The lens of the identification camera 3 is downwardly arranged and is located directly above the light source strip 2. The identification camera 3 is a CCD camera in this embodiment and can identify the length X1 of the light source strip 2 below. The required rotating speed value of the strip conveying is obtained through a formula input into the control system and the strip conveying speed is adjusted in real time. The light shield 1 is provided with a partition plate 11 which divides the light shield 1 into two parts and the identification camera 3 is located above the partition plate 11. The partition plate 11 is provided with a mounting hole 111 at the position opposite to the identification camera 3 and the convex lens 4 is placed in the mounting hole 111. The mounting hole 111 can hold the convex lens 4. The light shield 1 is divided into two parts which can be buckled by a vertical plane perpendicular to the conveying direction of the strip. The identification camera 3 and the partition plate 11 are located in one of the two parts. The two parts of the light shield 1 are buckled and fixed by bolts. The part of the light shield 1 provided with the identification camera 3 is fixed and arranged. The buckle plate 13 is located on the light shield provided with the identification camera 3. Two stabilizing rollers 5 are installed on the frame of the strip conveying line and are located on both sides of the light shield 1 and are in pressure contact with the upper surface of the strip. The circumferential outer wall of the stabilizing roller 5 is made of rubber.

[0035] Wherein, the strip steel width value monitored by the recognition camera 3 is X1, and the edge wire width X can be obtained by subtracting the preset strip steel cutting width value X2:

[0036]

[0037] The obtained X value is brought into the following formula, and the strip steel conveying speed value V to be adjusted can be obtained, which is also related to the material of the strip steel.

[0038] When the strip steel material is SPHC, the formula is:

[0039] V = 50X - 190

[0040] When the strip steel material is structural steel, the formula is:

[0041] V = 34X - 70

[0042] When the strip steel material is boron-containing C material, the formula is:

[0043] V = 54X - 220

[0044] Wherein, when the speed V of the strip steel conveying belt is greater than 185 m / min, the value of V is kept at 185 m / min.

[0045] As can be seen from the formula, after the edge wire width is increased through the self-adaptive adjustment of the edge wire roll winding speed by the torque sensor and the preset maximum tension of the system, the strip steel conveying speed is increased, which can improve the conveying efficiency of the strip steel and also ensure that the edge wire will not be broken. When the edge wire width is reduced, the tension value is unchanged, but the probability of edge wire breakage will increase. At this time, the strip steel conveying speed is reduced through formula calculation, thereby reducing the amount of edge wire provided, and the speed of the edge wire roll is also adaptively reduced, thereby ensuring the conveying efficiency of the strip steel while reducing the probability of edge wire breakage.

[0046] The implementation principle of the push-pull type pickling unit edge wire breakage prevention monitoring device is that the recognition camera 3 in the light shielding shell identifies the projection image of the strip steel reflected by the convex lens 4, and then calculates the width value of the current strip steel. After the system calculates the corresponding edge wire width, it is brought into the system formula to calculate the appropriate conveying speed of the strip steel at this time, and then cooperates with the winding speed of the edge wire roll to effectively reduce the probability of edge wire breakage and improve the product quality of the strip steel after passing through the pickling unit. The setting of the light shielding cover 1, the light shielding plate 12 and the partition plate 11 can effectively reduce the influence of external light sources on the monitoring of the strip steel width, and the stable roller 5 can reduce the disturbance of the strip steel, thereby improving the accuracy of the strip steel width monitoring.

[0047] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A push-pull pickling line edge wire breakage monitoring device, characterized by: Comprising A light shield (1) is erected at a position between a drying section and a side wire cutting section of a pickling unit, shields the strip below, and is only provided with an opening at the bottom; A light source belt (2) is installed in the strip conveying line and is located below the strip opposite the light shield (1); Two identification cameras (3) are installed in the light shield and are located at the two ends of the light shield, can identify the length X1 of the light source belt (2) below, and can obtain the required rotating speed value of the strip conveying through a formula input into the control system to adjust the strip conveying speed in real time; A partition plate (11) is installed in the light shield (1) to divide the light shield (1) into two downward parts, the identification cameras (3) are located above the partition plate (11), and an installation hole (111) is provided opposite the identification cameras (3); A convex lens (4) is installed in the installation hole (111).

2. The breakage monitoring device for push-pull pickling line according to claim 1, characterized in that: The light shield (1) extends downward to the frame of the strip conveying equipment at both sides of the strip.

3. The breakage monitoring device for push-pull pickling line according to claim 1, characterized in that: The part of the light shield above the strip is horizontally provided with a light shield plate (12).

4. The breakage monitoring device for push-pull pickling line according to claim 1, characterized in that: The light shield (1) is divided into two parts that can be buckled by a vertical plane perpendicular to the conveying direction of the strip, the identification cameras (3) and the partition plate (11) are located in one of the two parts, the two parts of the light shield (1) are fixed by bolts after buckling, and the part of the light shield (1) where the identification cameras (3) are installed is fixed and erected.

5. The breakage monitoring device for push-pull pickling line according to claim 1, characterized in that: A buckle plate (13) is fixed at the top of the light shield, and the buckle plate (13) is used for the wire belt to pass through.

6. A breakage monitoring device for a push-pull pickling line according to claim 1, characterized in that: Two stabilizing rollers (5) are installed on the frame of the strip conveying line, and the two stabilizing rollers (5) are located at both sides of the light shield (1) and are pressed against the upper surface of the strip.

7. A breakage monitoring device for a push-pull pickling line according to claim 6, characterized in that: The circumferential outer wall of the stabilizing roller (5) is made of rubber.

8. The breakage monitoring device for push-pull pickling line according to claim 1, characterized in that: The bottom of the installation hole (111) can hold the convex lens (4), the light shield plate (12) is provided with a pressing ring plate (112) installed by bolts, and the bottom of the pressing ring plate (112) is tightly pressed against the upper surface edge of the convex lens (4).

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