Accurate automatic coiling calculation method for uncoiler

Abstract

The application discloses a precise automatic coil feeding calculation method of a decoiler, which comprises a decoiler, a sensor, a steel coil and two material supporting rollers, the decoiler is provided with a mandrel, the sensor is provided with a sensing line, the steel coil is provided with a highest point position line, a center point position line and a lowest point position line, and the horizontal center line of the two material supporting rollers is used as a reference line; the height position of the mandrel of the decoiler is uniquely determined and known, and the distance of a feeding trolley upwardly rising and touching the sensor is known, the present position of the center point of the steel coil is calculated by using a trigonometric function relationship, and the position relationship between the steel coil and the mandrel of the decoiler is obtained; and the algorithm is applied to a setting program of an automatic device, so that accurate feeding can be automatically performed.

Description

Technical Field

[0001] This invention relates to a precise automatic winding calculation method for an uncoiler. Background Technology

[0002] Uncoiling machines are a prerequisite for both the traditional shearing industry and the emerging blanking line industry. Only by uncoiling the steel coils or aluminum coils coming out of the steel mill can subsequent processing stages be carried out.

[0003] The uncoiler process is as follows: a trolley carrying the steel coil delivers the coil to the uncoiler mandrel, and the uncoiler then continues the uncoiling operation. In most cases, the process of the trolley delivering the coil to the uncoiler mandrel is performed by human observation, resulting in low automation and poor accuracy. This invention addresses these problems by developing this algorithm. Summary of the Invention

[0004] To address the aforementioned technical problems, the objective of this invention is to propose a precise automatic winding calculation method for an uncoiler.

[0005] The technical solution of the present invention is implemented as follows: a precise automatic winding calculation method for an uncoiler, comprising an uncoiler, a sensor, a steel coil and two support rollers. The uncoiler has a mandrel, the sensor has a sensing line, and the steel coil has a highest point position line, a center point position line and a lowest point position line, with the horizontal center line of the two support rollers as the reference line.

[0006] The distance between the induction line and the baseline is H;

[0007] The distance between the induction line and the line at the highest point is h;

[0008] The radius of the receiving roller is r;

[0009] The center distance between the two receiving rollers is half of a;

[0010] The radius of the steel coil is R;

[0011] The distance between the lowest point line and the baseline is x;

[0012] Equation 1 can be obtained:

[0013] H = h + 2R + x

[0014] Equation 2 is obtained from the right angle theorem:

[0015] (R+r) 2 =a 2 +(R+x) 2

[0016] Solving equation 2 yields equation 3:

[0017] 2Rr+r 2 =a2 +2Rx+x 2

[0018] Equation 4 is obtained by transforming Equation 1:

[0019] x = H - 2R - h

[0020] Substituting the value of x in equation 4 into equation 3, we obtain equation 5:

[0021] 2Rr+r 2 =a 2 +2R(H-2R-h)+(H-2R-h) 2

[0022] Simplifying equation 5 yields equation 6:

[0023]

[0024] By calculating R+x, the relative position of the steel coil and the uncoiler mandrel can be determined, thus enabling accurate feeding of the steel coil.

[0025] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0026] The precise automatic coil loading calculation method of the present invention calculates the current position of the center point of the steel coil by using trigonometric functions based on the unique and known height position of the mandrel of the uncoiler and the distance of the feeding trolley to touch the sensor as it rises. This yields the positional relationship between the steel coil and the mandrel of the uncoiler. By applying this algorithm to the setting program of the automated equipment, accurate automatic loading can be achieved. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0028] Appendix Figure 1 This is a model diagram of the unwinding machine. Detailed Implementation

[0029] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "straight", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] As attached Figure 1 As shown, the present invention discloses a precise automatic coil loading calculation method for an uncoiler, comprising an uncoiler, a sensor, a steel coil, and two support rollers. The uncoiler has a mandrel, the sensor has a sensing line 1, the steel coil has a highest point position line 2, a center point position line 3, and a lowest point position line 4, and the two support rollers are generally mounted on a loading trolley, with the horizontal center line of the two support rollers as the reference line 5; the plane projection point of the center line of the sensor is A, the plane projection point of the center line of any support roller is B, and the plane projection point of the midpoint between the two support rollers is C.

[0032] The distance between induction line 1 and reference line 5 is H; the distance between induction line 1 and the highest point position line 2 is h; the radius of the material receiving roller is r; half of the center distance between the two material receiving rollers is a; the radius of the steel coil is R; and the distance between the lowest point position line 4 and reference line 5 is x.

[0033] The known parameters include: H - sensor height; h - the distance between the highest point of the steel coil and the sensor height; r - the radius of the support roller; a - the center distance between the two support rollers, BC distance.

[0034] Unknown parameters include: R - the radius of the steel coil; x - the height of the lowest point of the steel coil relative to the baseline.

[0035] From the above, we can obtain Equation 1:

[0036] H = h + 2R + x

[0037] In right triangle ABC, equation 2 is obtained by the right angle theorem:

[0038] (R+r) 2 =a 2 +(R+x) 2

[0039] Solve equation 2:

[0040] R 2 +2Rr+r 2 =a 2 +R 2 +2Rx+x 2

[0041] Equation 3 is obtained:

[0042] 2Rr+r 2 =a 2 +2Rx+x 2

[0043] Equation 4 is obtained by transforming Equation 1:

[0044] x = H - 2R - h

[0045] Substituting the value of x in equation 4 into equation 3, we obtain equation 5:

[0046] 2Rr+r 2 =a 2 +2R(H-2R-h)+(H-2R-h) 2

[0047] Equation 5 can be resolved as follows:

[0048] 2Rr+r 2 =a 2 +2RH-4R 2 -2RH+H 2 -2H(2R-h)+(2R-h) 2

[0049] 2Rr+r 2 =a 2 +2RH-4R 2 -2RH+H 2 -4RH+2Hh+4R 2 -4Rh+h 2

[0050] 2Rr+r 2 =a 2 -2RH-6Rh+H 2 +2Hh+h 2

[0051] 2Rr + 2RH + 6Rh = a 2 -r 2 +H 2 +2Hh+h 2

[0052] R(2r+2H+6h)=a 2 -r 2 +H 2 +2Hh+h 2

[0053] Equation 6 is obtained:

[0054]

[0055] Equation 6 contains only one unknown, R, so a unique solution can be obtained. By calculating R+x, the relative position of the steel coil and the uncoiler mandrel can be determined, thus enabling accurate feeding of the steel coil.

[0056] By substituting the above algorithm into the program of the automated coiling equipment, the program can automatically calculate the feeding parameters for coiling and perform automatic coiling operations; for example, using a lifting device to drive the feeding trolley to automatically align with the mandrel of the uncoiler; or controlling the mandrel of the movable uncoiler to automatically align with the center of the steel coil on the feeding trolley.

[0057] Based on the above algorithm, this application provides data tables for Embodiment 1 and Embodiment 2:

[0058] Table 1: Data on the height difference between the position of the steel coil and the mandrel of the uncoiler

[0059]

[0060] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A precise automatic winding calculation method for an uncoiler, characterized in that: It includes an uncoiler, a sensor, a steel coil and two support rollers. The uncoiler has a mandrel, the sensor has a sensing line (1), and the steel coil has a highest point position line (2), a center point position line (3) and a lowest point position line (4), with the horizontal center line of the two support rollers as the reference line (5). The distance between the induction line (1) and the reference line (5) is H; The distance between the induction line (1) and the highest point position line (2) is h; The radius of the receiving roller is r; The center distance between the two receiving rollers is half of a; The radius of the steel coil is R; The distance between the lowest point position line (4) and the baseline (5) is x; Equation 1 can be obtained: H = h + 2R + x Equation 2 is obtained from the right angle theorem: (R+r) 2 =a 2 +(R+x) 2 Solving equation 2 yields equation 3: 2Rr+r 2 =a 2 +2Rx+x 2 Equation 4 is obtained by transforming Equation 1: x = H - 2R - h Substituting the value of x in equation 4 into equation 3, we obtain equation 5: 2Rr+r 2 =a 2 +2R(H-2R-h)+(H-2R-h) 2 Equation 5 is simplified to obtain Equation 6: By calculating R+x, the relative position of the steel coil and the uncoiler mandrel can be determined, thus enabling accurate feeding of the steel coil.

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