JPS61253120A - Winding method for strip free from uneven edge - Google Patents

Abstract

PURPOSE:To make even wound strip edges from the beginning of winding and to prevent the quality degradation during handling of a wound coil by detecting a misaligned quantity of a strip coming in a winder and aligning the side guide center line with the center line of the strip. CONSTITUTION:A snaking detector 8 detects a misaligned quantity (b) of a strip 4 against the center line of a device when a top detector 7 detects the strip 4 coming in the winder 1. A drive side stroke value SD and a workside stroke value SW are operated using an internal measure width (a) between initial side guides 3 and a strip width (c) detected by a position detector 6 to actuate a hydraulic cylinder 5 and to make side guides 3 approach to the edge of the approaching strip 4 evenly. Unevenness of wound edges does not occur and edge crushing and broken legs during handling of a strip are eliminated to prevent the quality degradation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for preventing strip edges from being uneven in the inner winding portion of a coil during winding in a hot strip mill.

(Prior Art) As shown in FIG. 2, the conventional hot strip mill has a strip winding method in which there is a side id 3 in front of the pinch roll 2 that centers the meandering strip 4 on the fin center. To prevent winding failure due to stalling, the side guide 3's side plate is set wider than the width of the strip lip, and after the strip tip passes through the side guide 3 and bites into the pinch roll 2, the side guide 3 is stripped. It is customary to center the strip with a widthwise movement (seat stroke).

(Problem to be Solved by the Invention) Therefore, the tip of the +7 knob is in a free state r), and it bites into the pinch roll 2 in a meandering state, and the strip center starts winding in an eccentric state with respect to the fin center. . After that, it will be forcibly centered on the line center by the seat stroke of the side guide 3, but the inner winding portion of the coil will correspond to the length that has been threaded until the seat stroke is completed. In this case, the eccentricity of the strip appears as a telescopic amount, and the strip edges become irregular.

#S4 Figure shows a cross-sectional view of the coil, but (a) is incorrect.
It is a coil with a new so-called telescope,
Figure (b) shows a normal coil. After the sheet stroke is completed, the centering of the strip is maintained, no telescoping occurs, and the edges are aligned. This inner winding part of the coil may be crushed or bent during transportation to the subsequent process or when the coils are stacked and temporarily placed, resulting in a defective coil. It causes a decline in sex.

Conventionally, various methods have been known for operating this type of side guide, such as those described in VT Lean Publication No. 54-9141, Japanese Unexamined Patent Publication No. 55-144326, and Japanese Unexamined Patent Publication No. 10316-1983. , all of them relate to setting the opening degree of the side guide, and there is no proposal to solve the unevenness of the strip edges during the side guide stroke.

SUMMARY OF THE INVENTION An object of the present invention is to solve this problem by properly operating the side guides depending on the condition of the tip end of the strip, thereby eliminating edge irregularities in the inner winding portion of the coil.

(Measures for solving the problem #li) The gist of the present invention is to measure the eccentricity of the strip, and to wind the strip by aligning the side guide center with the strip center.
This is a method for winding an IJ tube.

(Operation, Example) The present invention will be specifically described below using an example shown in the drawings.

FIG. 2 is a plan view of an example of equipment for implementing the present invention, and FIG. 3 is a side view thereof, in which 1 is a winder, 2 is a pinch roll, and 3 is a side guide for guiding both sides of the running strip 4. It is.

Each of the side guides 3 has its own hydraulic cylinder 5, and is also equipped with a position detector 6 for detecting its position in the width direction. In front of the side guide 3, a tip detector 7 for detecting the tip of the strip and a meandering detector 8 for detecting the meandering amount (eccentricity) of the strip are installed.A rolling mill (not shown) is located on the right side of Figure 0. .

FIG. 1 shows the operating procedure for carrying out the invention. The start timing is determined by the start timing setter 9 so that the stroke starts when the end of the strip is bitten into the pinch roll 2 by the signal from the tip detection 'n7, and the initial width of the side guide is set. Setting device 10, meandering detector 8 and plate width signal device 11 (respective signals a and b%
The short stroke amount of one side plate (drive side) and the other side plate (work side) of the side guide 3 calculated in advance by step C) is calculated by the side guide operation pattern transmitter 12 within the same time. , set the movement pattern in chronological order.

That is, drive side seat stroke amount So = (ac)/2 + b ・=C1) work side seat stroke amount Sw ”(ac)/2 b =・(2) These are the side side seat stroke amounts. - Stroke Control -
The signal from the side guide movement pattern transmitter IZ is input to the next side guide stroke drive servo system.

The side guide 1 stroke drive servo system feeds back the side guide 3 according to this signal via the servo controller 13, servo amplifier 14, hydraulic servo valve 15, hydraulic cylinder 5, position detector 6, and detection amplifier 16. Control and match the side guide center to the strip center.

After completing the sit stroke, the side guide position described above is maintained up to the tail end of the strip.

Note that this description is based on one example, and the present invention is not limited to this example.

For example, in this example, the tip detector 7 and the meandering detector 8 were provided on the front side of the side guide 3, but their positions are not particularly specified as long as they are between this position and the pinch roll.

(Effects of the Invention) According to the present invention, the movement of the strip tip in the width direction due to the sheet stroke is eliminated, the occurrence of uneven inner winding of the coil is prevented, and the edges of the strip are aligned from beginning to end from the tip to the tail end.

[Brief explanation of drawings]

Fig. 1 is a control block diagram showing a side guide stroke operation method according to the present invention, Fig. 2 is a plan view showing an example of equipment for implementing the invention, and Fig. 3 is a side view of the equipment shown in Fig. 2. , FIG. 4 is a diagram showing a cross section of a coil with irregular end faces (FIG. 4(a)) and a normal coil cross section (FIG. 4(b)). DESCRIPTION OF SYMBOLS 1... Winder, 2... Vinci roll, 3... Side guide, 4... Strip, 5... Hydraulic cylinder, 6... Position detector, 7... Tip detector , 8...
・Meandering detector, 9...Start timing setting device, 10・
...Side guide initial width setting device, 11... Board width signal device, 12... Side guide operation pattern transmitter, 13.
... Servo controller, 14... Servo amplifier,
15... Hydraulic servo valve, 16... Detection amplifier.

Claims (1)

[Claims] (1) A method for winding a strip without edge irregularities, which is characterized by measuring the eccentricity of the strip and winding the strip by aligning the strip center with the side guide center.