JPS61255714A - Rolling mill - Google Patents

Abstract

PURPOSE:To increase the plate passing to a strip heating device by providing between the rolling mill stands a guide device which enables the position adjustment according to the variation in a strip pass line. CONSTITUTION:The fluid pressure cylinder 6 of the outlet port guide device 4 is arranged at the lower part of a strip heating device 3 and stripper guides 8, 8 are fixed as well to the frame 7 connected to a rod. The inlet port side guides 23, 23' are arranged immediately behind the work roll of a stand 2 and the lower guide roll 26 for strip tension detecting is provided as well. At the plate passing time of a strip (s) a cylinder 9 locates to the necessary position an arm 10 and the lower guide roll 11 and at rolling time cylinders 9, 24 support the strip (s) by ascending the guide rolls 11, 26. The plate passing is thus im proved and the pass line under rolling is held constant as well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rolling device that has good sheet threadability and is capable of keeping the pass line constant during rolling.

[Prior Art] An example of a rolling mill equipped with a conventional guide device is shown in FIG. A guide device [C for guiding the strip S is provided. That is, a link e that can be rotated by a drive device is pivotally mounted on an appropriate frame d, and an arm ``, which is pivotally connected to one end of the link e, has an exit guide g of the preceding stand a.
is connected so that it can move along a guide member in a direction parallel to the traveling direction of the strip S, and the arm i pivotally connected to the other end of the link e has an inlet side guide j of the rear stand b that is connected to the strip S. A looper for detecting the tension of the strip S is connected between the stands a and b so as to be movable along a guide member k in a direction parallel to the traveling direction of the strip S. is arranged so that it can rotate up and down.

In such conventional equipment, the strip S is rolled while being guided by the exit guide g and the entrance side guide j.
If the work roll wears out or if the set of work roll diameters is changed, the strip pass line may be inclined or fluctuate up and down, making it impossible to keep the pass line constant during rolling. For this reason, stands a, b
If a strip heating device is installed between them, there is a risk that the strip S will interfere with the heating device due to a change in the pass line, and the above-mentioned guide device has poor threadability to the heating device. There was a risk that the board would be damaged.

[Problems to be Solved by the Invention] The present invention enables the strip heating device to be smoothly passed through the heating device even when the strip heating device is installed between the rolling mill stands, and the heating device is not connected during rolling. This is done in order to maintain the pass line constant in the section , thereby solving the above-mentioned problems.

[Means for Solving the Problems] In the present invention, a guide device is provided between the rolling mill stands so that the position can be adjusted in accordance with changes in the strip pass line.

[Function] Therefore, in the present invention, if the path line changes for some reason, the position of the guide device is corrected and the path line is maintained at a constant position.

[Example] Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, in which 1 is a front rolling mill stand, 2 is a rear rolling mill stand, and 3 is a stand 1.
Strip heating device installed between 2, 4 is stand 1
and the outlet guide device disposed between the strip heating device 3 and the inlet guide device 5 disposed between the strip heating device 3 and the stand 2.

At the bottom of the strip heating device 3, the axis line is the strip S.
A fluid pressure cylinder 6 of the outlet guide device 4 is disposed substantially parallel to the traveling direction of the exit guide device 4, and a frame 7 is connected to the rod tip of the fluid pressure cylinder 6. The frame 7 has a stripper guide 8.8 immediately after the work roll of the stand 1.
' is fixed, and immediately in front of the stripper guide 8, an arm 10 is fixed that can be rotated up and down by a hydraulic cylinder 9. The upper surface of the arm 10 serves as a guide surface so that the strip S can be passed smoothly, and a lower guide roll 11 for detecting the strip tension is rotatably attached to the tip of the arm 10.

Immediately before the stripper guide 8', a hydraulic cylinder 1
An arm 13 which can be rotated up and down by means 2 is fixed. The lower surface of the arm 13 serves as a guide surface so that the strip S can be passed smoothly, and an upper guide roll 14 is rotatably attached to the tip of the arm 13. Further, the upper end of the jack 15 attached to the upper part of the frame 7 comes into contact with the protrusion 16 of the arm 13, and the upper guide roll 1
4 and arm 13 can be set.

Immediately in front of the lower guide roll 11, a stripper plate 18 is provided which can be rotated up and down by the hydraulic cylinder 11. The stripper plate 18 is inserted into the strip heating device 3 so that it can guide the strip S in the strip heating device Ia. Also, the frame 1 disposed at the bottom of the strip heating device 3
A jack 20 is disposed at 9, and the upper end of the jack 20 is brought into contact with the frame 7 so that the pass line of the exit guide device W4 can be adjusted.

In the lower part of the strip heating device 3, opposite to the hydraulic cylinder 6, a hydraulic cylinder 21 of the inlet guide device 5 is arranged.
is arranged at the rod tip of the fluid pressure cylinder 21,
Frames 22 are connected. The frame 22 includes
Entrance side guide 23 immediately after the work roll of stand 2.
23' is arranged, and immediately after the entrance side guide 23,
A lower guide roll 26 for detecting strip tension is rotatably disposed so as to be able to be rotated up and down by a fluid pressure cylinder 24 via an arm 25. Further, a jack 21 is provided on the frame 19, and the upper end of the jack 27 is brought into contact with the frame 22 so that the path line of the entry guide device [5] can be adjusted.

When threading the strip S, the hydraulic cylinder 9 positions the arm 10 and the lower guide roll 11 at the required position, the hydraulic cylinder 12 closes the arm 13, and the jack 15 moves the arm 13 and the upper guide roll 14. The stripper plate 18 is positioned at the required position by the fluid pressure cylinder 17, the lower guide roll 26 is positioned at the required position by the fluid pressure cylinder 24, and the strip heating device 3 is passed from the upstream side of the rolling mill stand 1. The strip S is passed to the downstream side of the rolling mill stand 2. By threading the strip in this manner, the strip heating device 3 has good threading performance.

Also, during rolling, the lower guide rolls 11, 26 are raised by the fluid pressure cylinder 9.24, and the lower guide rolls 11, 26 are raised.
The strip S is supported by 26 and rolled. If the work roll of any stand is worn out and its diameter changes, the jack 20 or 27 is used to adjust the pass line in the strip heating device fa to a constant position.

When replacing the work roll on the stand 1.2, the fluid pressure cylinder 6.21 pulls out the outlet guide device 4 and the inlet guide device 5 to a position where they do not interfere with the work roll axle box.

Note that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] According to the rolling apparatus of the present invention, the sheet passing through the strip heating device provided between the stands is improved, and the strip pass line during rolling can be kept constant. It can produce various excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a rolling apparatus of the present invention, and FIG. 2 is an explanatory diagram of a conventional rolling apparatus. In the figure, 1.2 is a rolling mill stand, 3 is a strip heating device, 4 is an outlet guide device, 5 is an inlet guide device, 8.8'
is a stripper guide, 10 is an arm, 11 is a lower guide roll, 13 is an arm, 14 is an upper guide roll, 15 is a jack, 18 is a stripper plate, 20 is a jack, 22 is a frame, 25 is an arm, 26 is a lower guide roll , 27 indicates jealousy.

Claims (1)

[Claims] 1) A rolling machine characterized in that a guide device is provided between the rolling mill stands, the position of which can be adjusted according to changes in the strip pass line.