JPS6313766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a side guide of a rolling mill for aligning the center of the width of a plate or the like with the center of the width of a roll in a rolling mill.

Generally, when rolling plate materials, etc., it is necessary to align the center of the plate width with the center of the roll width of the rolling mill.
A side guide is used for this purpose. 1st
The figure is a cross-sectional view schematically showing a side guide in a conventional rolling mill. A pair of guide plates 4a, 4b are fitted with nuts 5a, 5b which are screwed onto a screw shaft 6 having a left-hand thread and a right-hand thread distributed from the center of the shaft. Above guide 3a,
3b, they are configured to be able to move equally in opposite directions with respect to the center of the roll width. Therefore, by setting the interval between the guide plates 4a and 4b in accordance with the width dimension of the plate material 20, it becomes possible to easily align the plate material 20 with the center of the roll width. However, the rolls of a rolling mill experience frictional wear during rolling, but especially when the width of the processed plate material 20 is narrower than the width of the rolls, only the center portion of the rolls will wear out, and the full width of the rolls will be adjusted each time. It has to be processed, which is uneconomical. Therefore, when rolling a plate material with a narrow width relative to the roll width, by freely moving the loading position of the plate material into the roll in the roll width direction and rolling, partial wear of the roll can be prevented, and the full width of the roll can be rolled. Measures are taken to ensure uniform wear over the roll and to reduce the number of roll corrections. Particularly, large wear occurs at the portion corresponding to the edge of the plate, so it is extremely effective when rolling a large amount of plate material of a specific width.

However, in order to move the loading position of the plate material into the rolls from the roll axis in a conventional rolling mill, the operation of the rolling mill is stopped and the axial screwing positions of the nuts 5a, 5b of the guide plates 4a, 4b are adjusted in advance. When processing plates with a wide variety of plate widths according to the rolling schedule, this will result in a decrease in productivity, such as the need for long setup man-hours. Not put into practical use. In addition, when rolling with a shift to the left and right with respect to the center of the rolls, it is difficult to process with a normal parallel roll rolling mill because the thickness accuracy in the width direction of the sheet decreases due to roll bending due to rolling reaction force. There are problems such as a limit to the board width.

The present invention has been proposed in order to solve this problem.The present invention has been proposed in order to solve this problem by moving the plate material left and right with respect to the center of the width of the plate while the rolling mill is in operation, and charging the plate material to the rolls of the rolling mill. It is an object of the present invention to provide a side guide for a rolling mill whose position can be freely set in the width direction of the rolls, and which can roll plate materials of various widths across the entire width of the rolls.

Hereinafter, the side guide for a rolling mill according to the present invention will be explained in detail based on the embodiment shown in FIGS. 2 and 3.

A frame 3 is attached to the base 2 on the entry side of the rolls 1, 1' of the rolling mill, and the rolls 1, 1' are mounted on this frame 3.
A pair of guide plates 4a and 4b are provided opposite each other and can freely move horizontally in the axial direction of the guide plate 1'. The guide plates 4a, 4b are connected to the left and right screw shafts 6 via nuts 5a, 5b which are removably fitted to the lower parts of the guide plates 4a, 4b, respectively.
a, 6b, and is mounted so as to be horizontally movable along guide portions 3a, 3b on the upper part of the frame 3.

Among the screw shafts 6a and 6b, one of the screw shafts 6a is formed into a hollow shaft, and one end is rotatably supported on the frame 3 at the center of the roll shaft, and the other end is supported on the drive side base 7 of the rolling mill. A gear 10 that meshes with a drive gear 9 connected to an output shaft of a power device such as an electric motor 8a provided in the frame 3 is fixed and rotatably supported by the frame 3. Further, the other screw shaft 6b extends inside the hollow of the screw shaft 6a toward the drive side of the rolling mill,
The end portion thereof is connected to the output shaft of a power device such as an electric motor 8b provided on the base 7, and at least both ends of the threaded portion are mounted on the frame 3 so as to be rotatably supported. Note that the electric motors 8a and 8b are capable of forward and reverse rotation.

On the other hand, at the lower part of the frame 3, a pair of shafts 11a and 11b parallel to the traveling direction The levers 13a, 13b and 14a, 14b connected with pins are fixed, and the piece body 12 is connected to the guide plate 4.
A pair of grooves 1 provided vertically on both sides of a and 4b
5a, 15b and 16a, 16b, and as the nuts 5a, 5b move horizontally, the guide plates 4a, 4b are fitted into the guide portion 3 of the frame 3.
It is configured to be able to move smoothly along lines a and 3b.

In this embodiment, the screw shafts 6a and 6b have left-hand threads and right-hand threads that are oriented in opposite directions, but screw shafts that are oriented in the same direction may also be used. Although it is fixed to the stand 2, the frame 3 can be attached to a board 20 depending on the purpose of use.
It is also possible to make it movable on the base in the forward and backward directions in the traveling direction X.

When operating the side guide of a rolling mill configured in this way, first, when dealing with changes in the width dimension of the processed plate material and the setting of an arbitrary charging position in the roll width direction, the electric motor By rotating 8a and 8b in the normal or reverse direction, both guide plates 4a and 4b can be easily set at predetermined positions. Ordinary devices and control systems are used for controlling the rotation of the electric motors 8a, 8b, detecting the positions of the guide plates 4a, 4b, etc.

As described above in detail based on the embodiments shown in the drawings, according to the side guide of the rolling mill according to the present invention, the charging position of the plate material to be charged into the rolls of the rolling mill can be adjusted by the width of the rolls. Since the direction can be set freely, plates of various widths can be rolled across the entire width of the roll. Therefore, compared to rolling with a conventional structure, it is possible to significantly reduce the number of corrections due to wear of the rolls, especially wear of the parts corresponding to the plate ends, reducing repair costs and downtime of the rolling mill. It is possible to improve productivity as a result of this.

In addition, if the guide plate drive device is installed separately on the drive side and the work side of the rolling mill, the structure will be extremely simple, but this is usually difficult because the work side of the rolling mill is equipped with a roll rearranging device, etc. Therefore, they must be installed together on the drive side as in the present invention. However, in this case, since both guide plates are driven by passing through one screw shaft and disposing the other screw shaft, it is possible to have an extremely compact structure and arrangement.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a schematic configuration of a side guide of a conventional rolling mill, Fig. 2 is a sectional view showing an embodiment of the side guide according to the present invention, and Fig. 3 is a line taken along line AA in Fig. 2. It is an arrow sectional view. In the drawing, 1 and 1' are rolls, 3 is a frame, and 3
a, 3b are guide parts, 4a, 4b are guide plates, 5a,
5b is a nut, 6a, 6b are left and right screw shafts, 7 is a base, 8a, 8b are electric motors, 9 is a driving gear, 1
0 is a gear, 11a and 11b are shafts, 12 is a piece body, 1
3a, 13b, 14a, 14b are levers, 15
a, 15b, 16a, and 16b are grooves.

Claims (1)

[Claims] 1 Two screw shafts screwed into a pair of opposing guide plates through nuts are respectively supported on the frame, one of the screw shafts is made into a hollow shaft, and a gear is fixed to one end and connected to the output shaft of the power device. At the same time, the other screw shaft is passed through the hollow shaft and extended to the drive side, and a power device is connected to the shaft end, while the two screw shafts are connected to the respective power devices. A side guide for a rolling mill, characterized in that the pair of opposing guide plates are configured to be horizontally movable by rotating forward and backward through the guide plate.