JP2015157301A - Method for detecting positional deviation of paper sleeve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect positional deviation of a paper sleeve to be fitted to an inner diameter of a coil without relying on a visual inspection of an operator when the coil consisting of a metal belt wound like the coil is fitted to a delivery reel.SOLUTION: When a coil is fitted to a delivery reel, in detecting a positional deviation amount in a width direction of a paper sleeve to be fitted to a coil inner diameter part, a center position in the width direction of the coil is calculated from detection timing of both ends while the coil is moving in the width direction by the first work detection sensor and a detection value of the coil car position detector by using a coil car position detector, first and second work detection sensors installed near an end of the width direction of the coil after the coil is inserted into the delivery reel, the center position in the width direction of the paper sleeve is calculated from detection timing of both ends in the width direction of the paper sleeve by the second work detection sensor and a detection value of the coil car position detector, and a positional deviation amount in the width direction of the paper sleeve is calculated by difference between them.

Description

  In the present invention, when a metal strip wound in a coil shape (hereinafter referred to as a coil) is inserted into a discharge reel on the entry side of a metal strip treatment facility such as a continuous annealing facility or a continuous plating facility in a steel cold rolling process line. In particular, the present invention relates to a method for detecting the amount of displacement in the width direction of a paper sleeve inserted for protecting a metal band at the inner diameter of a coil.

  In continuous annealing equipment and continuous plating equipment in a steel cold rolling process line, if the inner diameter sleeve is not used when winding the coil in the previous process, the coil is placed on the delivery reel (mandrel) on the entry side of the equipment in the next process. Before carrying and loading, it is necessary to attach a paper sleeve to the coil inner diameter in advance for the purpose of protecting the metal band at the coil inner diameter. The paper sleeve is generally attached manually by an operator.

  At this time, if the paper sleeve is displaced in the width direction after the coil is inserted, troubles such as meandering of the metal strip and slip of the coil inner diameter may occur. At the time of mounting and when the coil has been inserted into the pay-out reel, the operator has visually confirmed whether or not a positional deviation in the width direction of the paper sleeve has occurred.

  However, due to the recent trend of automation and unmanned equipment, there is a case where the operator cannot check the positional deviation of the paper sleeve after inserting the coil in a timely manner. It is difficult to prevent.

  The present invention has been made in view of such circumstances, and when a coil made of a metal strip wound in a coil shape is inserted into a discharge reel, the positional deviation of the paper sleeve mounted on the inner diameter of the coil is adjusted by the operator. It is an object of the present invention to provide a paper sleeve misalignment detection method that can be detected without relying on visual inspection.

  In order to solve the above-described problems, the present invention is a coil made of a metal band wound in a coil shape on the entry side of a metal band treatment facility, and the inner diameter thereof is inserted to protect the metal band of the coil inner diameter portion. A paper sleeve is a method of detecting the amount of displacement in the width direction of a paper sleeve when the paper sleeve is transported and loaded onto a pay-out reel by a coil car, the coil car position detector for detecting the position of the coil car, and the coil Using the first and second workpiece detection sensors installed near the ends in the coil width direction after being inserted into the pay-out reel, and providing the first workpiece detection sensor at a position where the coil can be detected; The second workpiece detection sensor is provided at a position where the paper sleeve can be detected, and the detection timing of the both ends of the coil moving in the width direction by the first workpiece detection sensor and the coil From the detection value of the ruker position detector, the center position in the width direction of the coil is obtained, and from the detection timing of the both ends in the width direction of the paper sleeve by the second work detection sensor and the detection value of the coil car position detector The paper sleeve is characterized in that the center position in the width direction of the paper sleeve is obtained, and the amount of displacement in the width direction of the paper sleeve is obtained from the difference between the center position in the width direction of the coil and the center position in the width direction of the paper sleeve. A sleeve misalignment detection method is provided.

  In the present invention, a photoelectric sensor and / or a distance meter can be used as the first and second workpiece detection sensors.

  According to the present invention, since the positional deviation of the paper sleeve can be automatically detected, a trouble due to the positional deviation of the paper sleeve can be surely prevented without depending on the visual observation of the operator.

It is a figure which shows the procedure which mounts the coil formed by winding a metal strip in a coil shape to a payout reel. It is the front view and side view which show the mounting state of a paper sleeve. It is a side view which shows the mounting state of a paper sleeve, and the state which the paper sleeve shifted | deviated at the time of coil insertion to a mandrel. 4A and 4B are diagrams for explaining an implementation state of the paper sleeve misregistration detection method according to the embodiment of the present invention. FIG. 4A is a side view and FIG. 4B is a front view. It is a figure which shows the example of calculation of the deviation | shift amount of a paper sleeve.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a diagram showing a procedure for mounting a coil formed by winding a metal strip in a coil shape onto a payout reel. First, the coil 1 is placed on the coil car 2 (FIG. 1A), the operator 3 attaches the paper sleeve 4 to the inner diameter portion of the coil 1 (FIG. 1B), and then the coil car 2 is conveyed to the delivery reel 6. The coil 1 is inserted into the mandrel 5 (FIG. 1 (c)). The attached state of the paper sleeve 4 at this time is as shown in the front view and the side view of FIGS.

  At this time, as shown in FIG. 3B, when the operator attaches the paper sleeve 4 to the inner diameter portion of the coil 1, as shown in FIG. When the coil car 2 is conveyed to the pay-out reel 6 and the coil 1 is mounted on the mandrel 5, the paper sleeve 4 may be displaced.

  In the embodiment of the present invention, such a shift is detected without depending on the operator. 4A and 4B are diagrams for explaining an implementation state of the paper sleeve misregistration detection method according to the embodiment of the present invention. FIG. 4A is a side view and FIG. 4B is a front view.

  In this embodiment, two types of transmission photoelectric sensors 7a, 7b and 8a, 8b are used as workpiece detection sensors capable of detecting the presence or absence of workpieces, in the vicinity of the tip of the mandrel 5 of the pay-out reel 6 (the coil after being loaded into the mandrel). Provided near the end in the width direction. One photoelectric sensor 7a, 7b is provided at a height position where the coil 1 mounted on the payout reel 6 can be detected, and the other photoelectric sensor 8a, 8b is provided at a height position where the paper sleeve can be detected. Although not shown, a coil car position detector for detecting the position of the coil car 2 is also provided.

  With this configuration, when the coil 1 is transported to the delivery reel 6 by the coil car 2 and loaded into the mandrel 5, the timing when the coil 1 shields the photoelectric sensors 7a and 7b and the timing when the light passes, and the coil car By using the detection value of the position detector together, the positions of both ends of the coil 1 can be recognized. Then, the center position in the width direction of the coil 1 can be recognized by calculating the average value of the light-shielded timing position and the light-transmitted timing position.

  On the other hand, when the coil 1 is transported to the pay-out reel 6 and loaded into the mandrel 5 by the coil car 2, the timing when the paper sleeve 4 shields the photoelectric sensors 8a and 8b, the timing when the light passes, and the detection by the coil car position detector. By using the values together, the both end positions of the paper sleeve 4 can be recognized. Then, the center position in the width direction of the paper sleeve 4 can be recognized by calculating the average value of the light-shielded timing position and the light-transmitted timing position.

  Then, by calculating the difference between the center positions of the coil 1 and the paper sleeve 4, it is possible to detect the shift amount in the width direction of the paper sleeve 4.

  If this deviation exceeds the preset allowable value range (for example, FIG. 3B), an action such as an alarm or automatic dispensing stop is automatically performed so that the coil is not dispensed from the dispensing reel. Can be done.

  As described above, since the positional deviation of the paper sleeve can be automatically detected, a trouble due to the positional deviation of the paper sleeve can be surely prevented without depending on the visual observation of the operator.

Next, an example of calculating the deviation of the paper sleeve will be described with reference to FIG.
FIG. 5 shows a coil detection timing (photoelectric sensor) when the coil car 2 on which the coil 1 is mounted is conveyed to the right side as shown in FIG. 4B and the inner diameter portion of the coil 1 is discharged and loaded into the mandrel 5 of the reel. 7a, 7b light shielding and light transmission timing), paper sleeve detection timing (photoelectric sensor 8a, 8b light shielding and light transmission timing), coil car position X1 when the right end of coil 1 is detected, and coil car position X2 when the left end of coil 1 is detected. The coil car position Y1 when the right end of the paper sleeve 4 is detected and the coil car position Y2 when the left end of the paper sleeve 4 is detected are shown. A distance from the detection of the left end of the coil 1 to the coil car stop position is A. Further, in FIG. 5, the optical axes of the transmission photoelectric sensors 7a and 7b shown in FIG. 4 and the optical axes of the transmission photoelectric sensors 8a and 8b are made to coincide with each other in the direction perpendicular to the coil car horizontal plane.

  At this time, the center position in the width direction of the coil 1 is determined by {(X1 + A) + (X2 + A)} / 2 based on the coil car position X1 when the right end of the coil 1 is detected and the coil car position X2 when the left end of the coil 1 is detected. .

  Further, the center position in the width direction of the paper sleeve 4 is {(Y1 + A) + (Y2 + A)} / 2 by the coil car position Y1 when the right end of the paper sleeve 4 is detected and the coil car position Y2 when the left end of the paper sleeve 4 is detected. It is obtained by

  Accordingly, the difference between the center position {(X1 + A) + (X2 + A)} / 2 in the width direction of the coil 1 and the center position {(Y1 + A) + (Y2 + A)} / 2 in the width direction of the paper sleeve 4 results in the coil 1 and the paper sleeve. 4 can be obtained, but since the distance A from the time of detecting the left end of the coil 1 to the coil car stop position is the same, [{(X1 + A) + (X2 + A)} / 2] − [{(Y1 + A) + (Y2 + A)} / 2] = {(X1 + X2) / 2} − {(Y1 + Y2) / 2}, and without obtaining A, the center position in the width direction (X1 + X2) of the coil car position when the left and right ends of the coil 1 are detected The difference between the coil 1 and the paper sleeve 4 can be obtained from the difference between the / 2 and the center position (Y1 + Y2) / 2 in the width direction of the coil car position when the left and right ends of the paper sleeve 4 are detected.

In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible.
For example, although an example in which a transmissive photoelectric sensor is used as the workpiece detection sensor has been described in the above embodiment, a reflective photoelectric sensor may be used. In addition to the photoelectric sensor, a distance meter may be used, and the photoelectric sensor and the distance meter may be used in combination. A laser distance meter can be used as the distance meter.

  When the coil width is wide, a plurality of workpiece detection sensors may be installed in the coil width direction (coil loading direction).

  Furthermore, the sensor position for detecting the left and right ends of the coil 1 in the coil car traveling direction need not coincide with the sensor position for detecting the left and right ends of the paper sleeve. A shift amount of 4 can be obtained.

  That is, if the distance from the left end detection of the coil 1 to the coil car stop position is A and the distance from the paper sleeve left end detection to the coil car stop position is B, the center position in the width direction of the coil 1 is {(X1 + A) + ( X2 + A)} / 2, and the center position in the width direction of the paper sleeve 4 is found by {(Y1 + B) + (Y2 + B)} / 2.

  Here, the difference between the center position in the width direction of the coil 1 and the center position in the width direction of the paper sleeve 4 is [{(X1 + A) + (X2 + A)} / 2] − [{(Y1 + B) + (Y2 + B)} / 2. ] = {(X1 + X2) / 2}-{(Y1 + Y2) / 2} + (AB), and C = AB, so that the center position in the width direction of the coil 1 and the width direction of the paper sleeve 4 The difference from the center position is {(X1 + X2) / 2} − {(Y1 + Y2) / 2} + C, and the sensor position for detecting the left and right ends of the coil 1 and the sensor position for detecting the left and right ends of the paper sleeve 4 are different. If the difference C is known, the difference between the center position in the width direction of the coil 1 and the center position in the width direction of the paper sleeve 4 is known, and the amount of deviation between the coil 1 and the paper sleeve 4 can be obtained.

DESCRIPTION OF SYMBOLS 1 Coil 2 Coil car 3 Operator 4 Paper sleeve 5 Mandrel 6 Delivery reel 7a, 7b, 8a, 8b Work detection sensor

Claims (2)

On the entry side of the metal strip processing equipment, a coil made of a metal strip wound in a coil shape and a paper sleeve inserted in the inner diameter for protecting the metal strip at the inner diameter portion of the coil are conveyed to a discharge reel by a coil car. And detecting the amount of displacement in the width direction of the paper sleeve when
Using a coil car position detector that detects the position of the coil car, and first and second workpiece detection sensors installed in the vicinity of the end in the coil width direction after the coil is inserted into the payout reel,
The first work detection sensor is provided at a position where the coil can be detected, and the second work detection sensor is provided at a position where the paper sleeve can be detected,
From the detection timing of both ends of the coil moving in the width direction by the first workpiece detection sensor and the detection value of the coil car position detector, the center position in the width direction of the coil is obtained,
From the detection timing of both ends in the width direction of the paper sleeve by the second workpiece detection sensor and the detection value of the coil car position detector, the center position in the width direction of the paper sleeve is obtained,
A paper sleeve misalignment detection method, comprising: obtaining a paper sleeve width misalignment amount based on a difference between the coil width center position and the paper sleeve width center position.   2. The paper sleeve misregistration detection method according to claim 1, wherein the first and second workpiece detection sensors are photoelectric sensors and / or distance meters.

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