JPS592893Y2 - Bend correction device for the tip of the board - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a metal plate (hereinafter referred to as a "strip") that is continuously transported.

This invention relates to a device for straightening the curvature of the tip of a strip, which straightens the curvature of the tip of the strip when the tip of the strip is wound around the take-up reel, and quickly and reliably grips the strip onto the take-up reel.

Generally, in a rolling mill for steel plates, etc. that uses the tension prydle roll 1, the tension prydle roll 1 is
The strip 2 that comes out from the exit side is plastically deformed by bending upward as shown in FIG. There was a drawback.

For this reason, conventionally, the tip of the strip 2 was threaded by hand while holding it down with a presser bar, but this method was extremely inefficient and dangerous, so mechanization of the process was desired. It had been.

The conditions for mechanization are: (1) The bend in the tip can be corrected without stopping the threading of the strip 2.

(2) Even if the thickness and material of the strip 2 are changed variously,
Being able to deal with it.

(3) S) When the tip of the IJ tube 2 is gripped by the take-up reel 8 and winding is started, the pass line A of the wrist strip 2 changes due to the thickening of the roll, so the straightening device is placed on the surface of the strip 2. The structure must be such that it can be retracted upward to prevent contact and scratches.

(4) The structure is simple and compact, and maintenance is easy.

(5) Do not reduce work efficiency.

Due to these strict conditions, there has not yet been a device for straightening the bending of the tip of a plate that satisfies all of the above conditions.

The present invention was devised as a result of intensive research to complete a straightening device that satisfies all of these conditions.The strip coming out from the exit side of the tension pry roll is supported by a lower fixed roll and straightened from above. This invention relates to a device for straightening the bending of the tip of a plate, which has a structure in which the bending of the tip of the strip is corrected by pressing the strip with a roll, and the strip is pulled upward when the strip is wound onto a take-up reel.

More specifically, the present invention includes a lower fixed roll that supports the lower surface of the strip at the pass line of the strip coming out from the outlet side of the tension pry roll, and a lower fixed roll that supports the lower surface of the strip at the pass line behind the lower fixed roll. a straightening roll that corrects the bending of the tip end of the strip by applying more pressure; a support plate fixed to a shaft to which the straightening roll is rotatably pivoted; and a support plate fixed to the other end of the support plate. a guide plate which is attached to the tension pry roll and whose tip portion is positioned close to the bottom of the tension pry roll to guide the strip coming out from the tension pry roll to the straightening roll; The present invention provides a device for straightening the bending of a tip of a plate, characterized in that it comprises the straightening roll and a lifting device for lifting the guide plate upward.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the device for correcting the bending of the tip of a plate according to the present invention will be described in detail with reference to the drawings.

FIG. 2 is a front view of one embodiment of the device for correcting the bending of the tip of a plate according to the present invention, FIG. 3 is a front view of another embodiment of the device for correcting the bending of the tip of the plate according to the present invention, and FIG. is a perspective view of a main part in FIG. 3;

In the drawing, 3 indicates the strip 2 on the pass line A of the strip 2 coming out from the exit side of the tension pry roll 1.
This is a lower fixed roll that supports the lower surface of the strip 2, and is rotatably attached to the tension ply roll 1 side end of the lower guide plate that guides the strip 2 to the take-up reel 8.

4 presses the strip 2 from the upper surface side behind the lower fixed roll 3 of the pass line A of the strip 2.
This is a straightening roll for correcting the bending of the tip of the straightening roll 4, and support plates 5 are fixed to both sides of a shaft on which the straightening roll 4 is rotatably pivoted.

6 is a guide whose tip end 6a is positioned below the tension pry roll 1 and guides the tip of the strip 2 coming out from the exit side of the tension pry roll 1 to the straightening roll 4 without bending upward. It is a plate and is attached to the other end of the support plate 5 on the side where the straightening roll 4 is not attached to the shaft.

The straightening roll 4 and the guide plate 6 are positioned at the location shown by the solid line in FIG. 2 or 3 until the leading end of the strip 2 is gripped by the take-up reel 8. When stripping starts, the pass line A changes due to the thickening of the strip, so in order to prevent the straightening roll 4 and the guide plate 6 from coming into contact with the surface of the strip 2, the direction indicated by the dashed line in FIG. 2 or 3 is lifted into position.

Reference numeral 7 denotes an elevating device for elevating the straightening roll 4 and the guide plate 6. In the embodiment shown in FIG. 2, it is only an air or hydraulic cylinder, and as shown in FIGS. 3 and 4, it is an elevating device. Guide plate 7a that regulates the ascending and descending locus X of the end of 6
In some cases, it is equipped with.

The device for correcting the bending of the tip of a plate according to the present invention has the structure as described above, and the operation of winding up the strip 2 using the device for correcting the bending of the tip of the plate according to the present invention will be described below.

First, the lifting device 7 is operated to lower the straightening roll 4 and guide plate 6 to the position indicated by the solid line in FIG. 2 or 3.

At this time, since the tip end 6a of the guide plate 6 is positioned close to the bottom of the tension pry roll 1, the strip 2 does not pass through the gap between the guide plate 6 and the tension pry roll 1.

In this state, when the strip 2 is sent out from the exit side of the tension pry roll 1, the tip of the strip 2 tries to bend upward, but it is blocked by the lower surface of the guide plate 6, so it bends in front of the pass line A. As the strip 2 advances, its lower surface is supported by the lower fixing roll 3 and its upper surface is pressed by the straightening roll 4, so that the bending of the tip of the strip 2 is almost straightened and it is further bent downward to the front of the pass line A. move on.

A take-up reel 8 and a belt wrapper 9 are installed in front of the pass line A, and the strip 2 is gripped by the take-up reel 8.

At this time, the lifting device 7 is operated again, the straightening roll 4 and the guide plate 6 are pulled up to the position indicated by the dashed line in FIG. 2 or 3, and winding of the strip 2 is started.

During such work, no human labor is required and each work can be performed reliably and quickly.

As detailed above, the plate tip straightening device according to the present invention has a simple structure, does not cause any trouble, and is very compact, so it can be installed even in temper rolling mills where space is relatively limited. It is highly versatile and has the economical advantage of reducing labor costs, as well as being much superior in terms of safety compared to manual work. Since reel marks that occur on several inner diameter reels are corrected downward by the bend correction device, reel marks do not occur and yields are improved, which has the advantage of being of great practical value.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a state in which the tip of the strip is undergoing plastic deformation in which it bends upward, Fig. 2 is a front view of one embodiment of the device for correcting the bending of the tip of a plate according to the present invention, and Fig. 3 4 is a front view of another embodiment of the device for correcting the bending of the tip of a plate according to the present invention, and FIG. 4 is a perspective view of the main part of FIG. 3. 1... Tension pry roll, 2... Strip, 3... Lower fixing roll, 4... Straightening roll,
5... Support plate, 6... Guide plate, 6a... Tip part,
7... Lifting device, 7a... Guide plate, 8... Take-up reel, 9... Belt wrapper, A... Pass line, X... Lifting/lowering locus of the end of the guide plate.

Claims (1)

[Claims for Utility Model Registration] 1. A lower fixed roll 3 that supports the lower surface of the strip 2 at the pass line A of the strip 2 coming out from the exit side of the tension pry roll 1, and a lower fixed roll 3 at the pass line A. A straightening roll 4 presses the strip 2 from the upper surface side behind the strip 2 to correct the bending of the tip of the strip 2; A support plate 5 is attached to the other end of the support plate 5, and its tip 6a is positioned close to the bottom of the tension pry roll 1, and a strip 2 comes out from the tension pry roll 1. A guide plate 6 that guides the straightening roll 4 to the straightening roll 4, and a lifting device 7 that lifts the straightening roll 4 and the guide plate 6 upward when winding the strip 2. A device for correcting the bending of the tip of a plate. 2. The device for correcting the bending of a tip end of a plate according to claim 1, wherein the lifting device 7 is provided with a guide plate 7a that regulates the locus X in which the end of the guide plate 6 moves up and down.