JPS63235012A - Storage apparatus for strip - Google Patents

Abstract

PURPOSE:To prevent the meandering of a strip and to improve a productivity by moving a loop car and providing a winding drum loading a tension on the strip passing through a deflector roll by moving a loop car. CONSTITUTION:When the winding drum 4 is rotated by operating a motor 5, the loop car 2 is tracted at a connected point 12 of the center in its width direction, in a state that a fleet angle of a wire rope 1 is zero. In this way, the loop car 2 is always moved along the center line X of a line without being affected by a gap between a rail 9 and a flange of a wheel 10 or an elongation of the wire rope 1. Therefore, an axis center Y of a deflector roll 7a on the loop car 2 is always kept. a right angle with respect to the center line X of the line, the in the meandering width direction of the strip 8 is not caused to guide the strip 8.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention relates to a strip storage device used in equipment that continuously processes strips (steel bands) such as rolled steel plates.

<Prior art> In various processing lines, cold rolling equipment, etc., it is common to reduce the line speed (threading speed) that occurs between the central processing section of the line and its inlet section, as well as between the outlet section. In order to absorb fluctuations and achieve continuous operation of the central processing section, a strip storage device (hereinafter referred to as a looper) is used. As such a looper, a plurality of deflector rolls are arranged, a strip is wound in a meandering manner between these deflector rolls, and some of these deflector rolls are mounted on a movable trolley (
A structure has been proposed in which the strip is placed on a loop car (hereinafter referred to as a loop car) and the loop car is moved to apply tension to the strip and temporarily store a required length of strip. Conventionally, such a loop car moving device, as shown in FIGS. 3 and 4, has one end of a wire rope 1 fixed to a post 3 of a loop car 2 and the other end fixed to a winding drum 4. The loop car 2 is configured to reciprocate in the direction of arrow Z in FIG. 4 by rotating the drum 4 in forward and reverse directions and winding it up using a driving device such as a motor 5 and a speed reducer 6.

In the figure, 7a and 7b are deflector rolls, 8 is a strip, 9 is a loop car running rail, 10 is a wheel with a flange, and 11 is a base.

Since it is necessary to wind the wire rope 1 so as not to overlap each other in the axial direction of the winding drum 4, as the loop car 2 moves, the so-called A fleet angle α results. Therefore, due to the gap (backlash) between the rail 9 and the flange of the wheel 10, the axis Y of the deflector roll 7a
is inclined by an angle θ with respect to a line perpendicular to the line center X (position Y' in FIG. 3). As a result, the strip 8 may meander in the width direction on the deflector roll 7a, causing trouble in the threading process, and sometimes the strip 8 may protrude from the deflector rolls 7a, 7b, damaging the strip ends. There may be cases where the vehicle becomes inoperable. For this reason, it is necessary to always keep the gap between the rail 9 and the wheels 10 to a minimum, resulting in problems such as a decrease in production efficiency and an increase in maintenance costs.

In order to solve the above problem, as shown in FIG.
are installed rotatably, a pair of wire ropes 1' are wound around each groove 13, and one end of each wire rope 1' is connected to the looper frame or base 11 via the rope stretch adjuster 14. A moving device has been proposed in which the wire ropes 1' are fixed, while the other end is simultaneously wound on a winding drum 4, so that the fleet angles α of both wire ropes 1' are always symmetrical.

However, even with such a device, if unrestrained stretching occurs in the left and right wire ropes 1' during operation, the left and right fleet angles a become uneven, resulting in the difference shown in FIGS. 3 and 4 above. Similar to the moving device described above, there is a disadvantage that the axis of the deflector roll 7a is tilted, and adjustment of the elongation adjuster 14 requires a considerable amount of time and effort.

In addition, conventionally, the loop car moving device including the winding drum 4 is installed on the extension of the moving path of the loop car 2 (at the end of the rail 9), so maintenance of the loop car moving device is extremely difficult due to the location. It was inconvenient. Furthermore, such installation locations are often restricted due to the relationship with the installation locations of other related equipment within the line, and the cost of the equipment may increase.

<Problems to be Solved by the Invention> The present invention has been made in view of the above-mentioned conventional problems, and it is possible to reduce the fleet angle of the wire rope that occurs when moving a loop car to zero, and to avoid being affected by the elongation of the wire rope. , a strip storage device that prevents the axis of the deflector roll on the loop car from tilting, prevents the strip from meandering in the width direction, is free from restrictions on the installation location of the loop car moving device, and is easy to maintain. The purpose is to provide

Means for Solving the Problems> The strip storage device of the present invention includes a loop car having a deflector roll around which the strip is wound and movable on a rail, and a loop car having one end attached to the center in the width direction of the loop car. a number of grooves provided at the end of the rail so that the center line in the width direction of the loop car and its tangent line coincide with each other, and around which the wire rope is wound to guide the feeding of the wire rope; The present invention is characterized by comprising a winding drum to which the other end of the wire rope is attached and which winds up the wire rope and moves the loop car to apply tension to the strip passing through the deflector roll.

〉 Since the wire rope always extends between the loop car and the grooved car in line with the center line in the width direction of the loop car, even when the wire rope is wound on the winding drum and the loop car is moved, Fleet angle becomes zero. Furthermore, since the extending direction of the wire rope is regulated by the rolling wheel, the winding drum can be installed at any position other than the end of the rail.

Embodiments The strip storage device of the present invention will be specifically described based on embodiments.

FIG. 1 is a plan view showing the main parts of a strip storage device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line (■--■). It should be noted that the same or similar parts as in the prior art are given the same reference numerals, and repeated explanations will be omitted.

As shown in the figure, the connection point 12 at the center of the loop car 2 in the width direction
Attach one end of wire rope 1 to loop car 2 while attaching one end of wire rope 1 to
The other end of the wire rope 1 is attached to a winding drum 4 provided at an appropriate position in any direction (in the case shown, perpendicular to the same horizontal plane) with respect to the widthwise center line X (i.e., the line center line). It is.

Wire rope 1 from loop car 2 to winding drum 4
is wound around two grooved wheels 13a and 13b, and its feeding is guided.

The grooved wheel 13a is horizontally rotatably provided on the base 11 in contact with the center line
The wire rope 1 is extended with a fleet angle of zero.

On the other hand, the grooved wheel 13b is provided on the base 11 near the winding drum 4 via a moving device 15 so as to be horizontally rotatable. The moving device 15 includes a support base 1 on which a grooved wheel 13b is attached.
6, a base plate 17 that slidably supports the support base 16 by a guide rail 17a, and a base plate 17 that is rotatably supported by the base plate 17, extends parallel to the winding drum 4, and is attached to the support base 16. a screw shaft 18 screwed into a nut (not shown);
A sprocket 19 is attached to the end of the screw shaft 18 and connected via a chain 21 to a sprocket 20 attached to the shaft 4a of the winding drum 4. The grooved wheel 13b is moved in the same direction in synchronization with the winding, so that the fleet angle of the wire rope 1 with respect to the winding drum 4 is within a predetermined range (for example, 1.5 to 2 degrees or less). The moving device 15 can use various known reciprocating means such as a rack and pinion type, a cylinder drive type, etc., in addition to the above-mentioned screw drive type.

According to the above configuration, the winding drum 4 is
When rotated, the loop car 2 moves to the connection point 12 at the center in the width direction with the fleet angle of the wire rope 1 being zero.
It will be led by For this reason, loop car 2 is
It always moves along the line center line X without being affected by the gap between the rail 9 and the seven lunges of the wheel 10 or the elongation of the wire rope 1. Therefore, the axis Y of the deflector roll 7a on the loop car 2 is always the line center line
The strip 8 can be guided without meandering in the width direction of the strip 8 by keeping the strip 8 perpendicular to the width direction.

In addition, by interposing the grooved wheel 13a in the middle of the wire rope 1 from the loop car 2 to the winding drum 4, the loop car moving device including the winding drum 4 is located at a position where it is out of the extension of the moving path of the loop car 2. Since the loop car moving device is installed in

In the illustrated embodiment, the grooved wheel 13a is provided to be horizontally rotatable, but the grooved wheel 13a can also be rotated within a vertical plane including the line center line The loop car moving device including the winding drum 4 can also be installed at a corresponding position.

Further, the grooved wheel 13b may be omitted and the wire rope 1 from the grooved wheel 13a may be directly wound on the winding drum 4. In this case, the winding drum 4, motor 5, reducer 6, etc. is moved in the axial direction of the winding drum 4 in synchronization with the winding speed, and the fleet angle of the wire rope 1 generated between the grooved wheel 13a and the winding drum 4 is set to a predetermined value (for example, 1.5 degrees to 2 degrees). degree) or less. Further, although the above embodiment shows the loop car 2 equipped with one deflector roll 7a, the present invention can of course be applied to a loop car equipped with a plurality of deflector rolls.

<Effects of the Invention> According to the strip storage device of the present invention, it is possible to eliminate the fleet angle of one wire rope with respect to the loop car, and it is also possible to apply a traction force to the loop car at the center in the width direction. It is possible to prevent the axis of the deflector roll from tilting due to the tilting of the loop car, regardless of the elongation of the wire rope. Therefore, meandering of the strip can be prevented, production efficiency can be improved, and the effort of adjusting the gap between the wheels of the loop car and the traveling rail can be almost eliminated. Further, by interposing a grooved wheel between the loop car and the winding drum, the winding drum and its drive device can be set at any position off the extension of the loop car's travel path. Therefore, maintenance of the winding drum and its driving device can be facilitated, and the degree of freedom in designing the installation space for these driving devices can be increased.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a strip storage device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a plan view showing a conventional strip storage device. FIG. 4 is a front view thereof, and FIG. 5 is a plan view showing another conventional strip storage device. In the drawing, 1 is a wire rope, 2 is a loop car, 4 is a winding drum, 7a is a deflector roll, 8 is a strip, and 13a is a grooved wheel. Patent applicant Mitsubishi Heavy Industries, Ltd. Agent

Claims (1)

[Claims] a loop car having a deflector roll around which a strip is wound and movable on a rail; a wire rope with one end attached to the widthwise center of the loop car; and a widthwise center line of the loop car at the end of the rail. a grooved wheel, which is provided so that the wire rope and its tangent lines coincide with each other, and on which the wire rope is wound and guides the feeding of the wire rope; A strip storage device comprising: a winding drum that applies tension to the strip passing through the deflector roll by moving a loop car.