JPH0133213Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a caliber shift device for a rolling mill.

Conventional structure and its problems In a conventional rolling mill, when changing the caliber of the rolling rolls, the rolling mill main body replacement cylinder device is activated to move the rolling mill main body, thereby changing the rolling mill body to the predetermined caliber. are matched online.

With this conventional configuration, caliber shifting is performed using a large-capacity rolling mill body replacement cylinder device, making fine adjustments difficult and taking a relatively long time to match a given caliber online. There are drawbacks.

OBJECT OF THE INVENTION The object of the present invention is to provide a caliber shift device for a rolling mill that eliminates the above-mentioned conventional drawbacks.

Structure of the Invention In order to achieve the above object, the caliber shift device for a rolling mill of the present invention is provided with a large-capacity rolling mill main body replacement cylinder device connected to a trolley for moving the rolling mill main body in and out. a caliber shift drive that matches a predetermined caliber of the rolling rolls of the rolling mill main body online via the rolling mill main body replacement cylinder device by moving the cart by small distances with the replacement cylinder device being reduced; It is equipped with a device.

Embodiment and Operation An embodiment of the present invention will be described below based on the drawings. 1 is a rolling mill body disposed on a sole plate 2, which includes wheels 4 on a guide rail 3;
It has a rolling roll 6 with a caliber 5. 7 is a pinion stand, the drive shaft of which is connected to each rolling roll 6 via a universal joint 8. The roll-side shaft 8A and stand-side shaft 8B of the universal joint 8 are spline-fitted to each other, allowing the universal joint 8 to expand and contract during caliber shifting. 9
is a cylinder device for replacing the rolling mill main body, the tip of its piston rod is connected to the rolling mill main body 1 via a coupler 10, and the wheels 11 disposed on the cylinder main body are placed on a guide plate 12. There is. A piston rod support cart 13 is movably placed on the guide rail 3 via wheels 14 and whose upper end is connected near the tip of the piston rod of the cylinder device 9; 15 is movably disposed on the sole plate 2; The cylinder main body of a cylinder device 9 is connected to a bracket on the caliber shift cart by a pin 16.
Reference numeral 17 denotes a spindle carrier disposed on the sole plate 2, to which the roll side shaft 8A of the universal joint 8 is connected. Even if 18 is a caliber shift drive device whose main body is fixed to a fixed body and whose spindle 18A is connected to the caliber shift truck 15, a worm mechanism consisting of a combination of a worm gear and a worm wheel is used, for example. For this reason, the caliber shift drive device 18 moves the spindle 18A forward and backward by minute distances. Further, the drive device 18 is provided with a stroke measuring device for measuring the amount of expansion and contraction of the spindle 18A.

Hereinafter, the effects of the above configuration will be explained. First, when replacing the rolling mill main body 1, the spindle carrier 17 is clamped using a clamping device (not shown).
This clamps the rolling mill main body 1 to the sole plate 2 and releases the clamping of the rolling mill main body 1 to the sole plate 2. Next, the piston rod of the cylinder device 9 is extended. As a result, the rolling mill main body 1 is
pushed in the direction. Next, the connection by the coupler 10 is released, and the piston rod of the cylinder device 9 is connected to the new rolling mill main body 1. Next, reduce the piston rod. Then, the new rolling mill main body 1 is pulled in the direction of arrow B and becomes in the state shown in the figure.

Next, in the case of caliber shift, the drive device 18 is operated to move the spindle 18A in and out as appropriate, and move the rolling mill main body 1 in the direction of arrow A or B via the caliber shift cart 15 and cylinder device 9. let Then, the amount of movement of the spindle 18A is measured by a stroke measuring device, and when the stroke of the spindle 18A reaches a predetermined value,
The drive device 18 is immediately stopped. This causes the predetermined caliber 5 to match the on-line O.
It is assumed that the coupler 10 is one with almost no backlash.

Effects of the invention As described above, according to the invention, in addition to the cylinder device for replacing the rolling mill main body, a dedicated drive device for caliber shift is provided. can be matched online accurately and quickly.

[Brief explanation of the drawing]

The figure is a side view showing an embodiment of the present invention. 1... Rolling mill main body, 5... Caliber, 6... Roll roll, 9... Cylinder device for replacing the rolling mill main body, 15... Caliber shift trolley, 18... Caliber shift drive device, O... Online .

Claims (1)

[Scope of utility model registration request] A large-capacity rolling mill main body replacement cylinder device for moving the rolling mill main body in and out is provided connected to a trolley, and the aforementioned rolling mill main body replacement cylinder device is moved in small distances at a time with the rolling mill main body replacement cylinder device being contracted. A caliber shift device for a rolling mill, characterized in that a caliber shift drive device is provided to match a predetermined caliber of a roll of a rolling mill main body online via a cylinder device for replacing the rolling mill main body.