JPH02243455A - Control system for home position stop of coil tail end - Google Patents

Abstract

PURPOSE:To improve operation efficiency and stable in quality by detecting a flexible value of a coil between a deflector roll and a tension reel through photographed image data, and performing stop control over the tension reel. CONSTITUTION:Deflection 3a or 3b of a coil 3 between a defector roll 5 in front of a shear cutter 1 and a tension reel 2 is photographed by a camera 10 of a deflection detector 9, and a deflection value of the coil 3 is detected by a computer 13 from the image data. Then, an error due to deflection of a stop position of a coil tail end after cutting by the shear cutter 1 is compensated, whereby stop control over the tension reel 2 is performed on the basis of output of a pulse generator 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention relates to a coil tail end fixed position stop control method for stopping the coil tail end at a predetermined position after shear cutting in steel process line outlet processing. .

[Conventional technology]

FIG. 2 is an explanatory diagram showing a conventional coil tail end fixed position stop control system in a conventional iron and steel process line tapping disclosed in, for example, Japanese Utility Model Application Publication No. 61-203649. In the figure,
Reference numeral 1 denotes a shear cutting device installed at the exit side of the process line, which cuts the coil according to instructions from a computer or an operator. 2 is a tension reel for winding the threaded coil 3 processed in the process line; 4 is the coil being wound on the tension reel 2; 5 is a deflector roll necessary for winding the coil 3 on the tension reel 2;
6 is a pulse generator that outputs an interrupt signal to the computer once every rotation of the tension reel 2; 7 is a pulse generator that outputs an interrupt signal to the computer once every rotation of the tension reel 2; Output pulse generator, 8, tension reel 2 n degrees (n = 1 to 380)
This is a pulse generator that generates a signal that is counted up each time it rotates, and a control mechanism that controls the tail end of the coil after shear cutting is stopped at the fixed position value by the stiff pulse generators 6 to 8. .

The purpose of determining the stopping position of the tail end of the coil is as follows:
This is to facilitate binder operation after the tension reel is removed.

Next, the operation will be explained.

When stopping the tail end of the coil after shear cutting at the fixed position value, the calculator actually measures the circumference length CA mentioned above for each rotation of the tension reel 2 from when the tension reel 2 deceleration command is output until the stop command is output. , its increment value ΔC is determined.

At this time, the circumferential length CA is determined by the outputs of the pulse generator 6 provided on the tension reel 2 and the pulse generator turf provided on the deflector roll 5. Further, the increment value ΔC is the difference in the circumferential length of each rotation of the tension reel 2, and is constant.

FIG. 3 is a diagram showing the relationship between the shear cut end point and the stop position of the tension reel 2.

From the vertical component A and horizontal component B of the distance #W from the center point of the tension reel 2 to the center point of the deflector roll 5 in FIG. 2, the radius r of the deflector roll 5, and the cutting point of the shear cutting device 1. Distance lI to the contact point of deflector roll 5! ! lLI is a constant determined by the configuration of the device, and the outer diameter R of the coil 4 wound on the tension reel 2 is determined from the circumferential length CA measured above.
When the angles α, β, γ, δ, and ε are determined as shown in Fig. 3, the distance between the circumference length Cr (actual measurement length) at the end of shear cutting and the fixed stop position of the tension reel 2 after shear cutting is completed is determined. The distance 11fL is: L=L, +L, +L3+L4 =L, +r, α+ A +B -R-r.

+R(β+γ) ・----(1) Also, and substituting W2=A2+82-2ABcos 90° into the above formula, L3 = +B (Rrl) 2L
4:2πRx(β+γ)/2π=R(β+γ). Here, π γ=−−δ, and when the above equations (2), (3), and (4) are substituted into equation (1), it becomes.

If we summarize the above and calculate L by substituting constants for each, we obtain a linear equation as shown in FIG.

If the actual distance is 11L and the outer diameter of the coil 4 is D, then L=a-D+b (6)
=a πD+b =a' c+b. Here, C=πD indicates the circumferential length at the outer diameter.

Then, by determining the amount of pulses of the pulse generator 8 that winds the distribution plate coil with the length of the distance ML, and when the counter amount of the pulse generator 8 reaches that amount of pulses, a stop command is issued to the tension reel 2. The tail end of the coil after shear cutting can be stopped at a fixed position.

(Problem to be Solved by the Invention) The conventional coil tail end fixed position stop control system is as described above, and the length of the coil 3 between the deflector roll 5 and the tension reel 2 is treated as a fixed length. Therefore, the coil 3a in Fig. 2.

If the coil tail end is shear cut in a bent state as shown in 3b, the coil tail end will not stop at the regular position even if the computer outputs the fixed position stop command as described above. It is necessary to return the coil to its normal position or apply tension to the tension reel 2 to eliminate the deflection of the coil, resulting in a problem in that work efficiency and productivity are reduced, and quality improvement and labor savings cannot be achieved.

This invention was made to solve the above-mentioned problems, and even if the coil is bent between the deflector roll and the tension reel, the tail end of the coil after shear cutting can always be stopped at a fixed position. The object of the present invention is to provide a coil tail end fixed position stop control system that improves work efficiency, productivity, and quality, and saves labor.

(Means for Solving the Problems) In the coil tail end fixed position 1# method according to the present invention, the tail end of the shear cut f& of the coil wound on the tension reel on the exit side of the steel process line stops at a predetermined position. In the coil tail end fixed position stop IIJN method for controlling the stop of the tension reel so as to control the tension reel, the amount of deflection of the coil between the deflector roll provided on the exit side of the process line and the tension reel is determined by image data obtained by imaging the coil. is detected based on the amount, and the stop control of the H tension reel is performed in consideration of the detected amount.

(Function) In the coil tail end fixed position stop control method of this invention, even if the coil is deflected between the deflector roll and the tension reel, the deflection debris of the coil is detected based on the image data of the coil, and the detected amount is taken into consideration. The tension reel is then controlled to stop.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention, and the same reference numerals as in FIG. 2 above indicate the same components. In the figure, 1 is a shear cutting device installed at the exit side of a steel process line, 2 is a tension reel for winding a threaded coil 3, 4 is a coil wound on the tension reel 2,
5 is a deflector roll; 6 to 8 are pulse generators for tension reel stop control provided on the tension reel 2 and the deflector roll 5; 9 is a deflection amount detection device provided on the exit side of the process line; Coil 3.3a, 3b between tension reel 2
It is comprised of a camera 10 that images the image data, a conversion device 11 that converts the image data numerically, and an output device 12 that outputs the numerically converted detection data of the deflection amount of the coil. 1
Reference numeral 3 denotes a computer that calculates a correction pulse amount for stop control of the tension reel 2 based on the detection data from the output device 12, and also performs overall control.

Next, the operation will be explained.

The @-taking operation of the coil 3 processed in the process line and the stopping operation of the tension reel 2 are the same as before, so the explanation will be omitted. but,
The amount of deflection is detected from the image data of the deflected coils 3a, 3b, and the stop control of the tension reel 2 is performed in consideration of the detected amount.

In other words, the coil 3 wound on the tension reel 2 on the exit side of the process line is monitored by the deflection amount detection device 9, and the calculator detects the amount of winding for each equipment when the amount of winding on the tension reel 2 reaches the planned amount. A stop command is output to stop the output side of the process line, a deflection detection command is set to the deflection detection device 9, and deflection detection data is input from the output device 12. Then, based on this detection data, a shear cutting command is outputted to the shear cutting device l in an electrical sequence, and when a shear cutting completion signal is input, the tension reel 2
A winding start command is output to each piece of equipment. At this time, the expected pulse amount from the deflection amount and the outer shape of the coil 4 of the tension reel 2 to the fixed position where the tail end of the coil stops is set for the pulse generator 8 provided in the tension reel 2, and An interrupt signal when the expected pulse amount is reached outputs a command to stop the tension reel 2 at a fixed position to each piece of equipment.

In this way, the amount of deflection of the coil between the deflector roll 5 and the tension reel 2 before shear cutting is accurately detected using image data, and the error caused by the deflection of the stopping position of the tail end of the coil after shear cutting is detected using the detected amount. Since the correction is made, the tail end of the coil can always be stopped at a fixed position regardless of the outer diameter and size of the coil 4 of the tension reel 2. Therefore, the operator can check the stop position after stopping, and the tail end of the coil can always be stopped at a fixed position. Manual adjustment to the fixed position of the end and work to apply tension to the coil 3 between the deflector roll 5 and the tension reel 2 before shear cutting are no longer necessary, improving work efficiency and production efficiency, stabilizing quality and saving labor. can be achieved. Furthermore, since the operation after shear cutting is automatic, it is possible to reliably move on to the next binder operation process without inducing operator errors.

〔Effect of the invention〕

As described above, according to the present invention, the amount of deflection of the coil between the deflector roll and the tension reel is detected based on image data, and the stop control of the tension reel is performed in consideration of the detected amount. Even if the coil bends between the deflector roll and the tension reel, the tail end of the coil after shear cutting can be automatically stopped at the fixed position, improving work efficiency and productivity, and ensuring stable quality. This has the effect of making it possible to save labor.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a conventional method, FIG. 3 is an explanatory diagram showing the relationship between the shear cut end point and the stop position of the tension reel, and FIG. 4 is a characteristic diagram showing the relationship between the distance to the fixed position stop position of the tension lean after shear cutting and the outer diameter of the coil. 1---Shear cutting device 2---Tension reel 3---Threading coils 3a, 3b---Deflected coil 4---Wound coil 5--- --- Deflector rolls 6 to 8 --- Pulse generator 9 ... Deflection amount detection device 10 --- Camera 11 --- Conversion device 12 --- - Output device 13-----1 computer Note that in the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a coil tail end fixed position stop control method that controls the stop of the tension reel so that the tail end of the coil wound on the tension reel on the exit side of the steel process line after shear cutting stops at a predetermined position, the process line The amount of deflection of the coil between the deflector roll provided on the exit side and the tension reel is detected based on image data obtained by imaging the coil, and the stop control of the tension reel is performed in consideration of the detected amount. A coil tail end fixed position stop control system.