JPS586720A - Pinch roller device - Google Patents

Abstract

PURPOSE:To reduce vibration during plate-material biting, etc., by arranging a worm jack and a screw-down device differently in a rolling direction, and thus reducing the overall height of a frame above a pinch roller part. CONSTITUTION:During plate-material conveyance, the extents of opening of upper and lower pinch rollers 15 and 13 are set less than the plate thickness of a roughly rolled plate material A previously by warm jacks 19, and a roller 15 is lowered through a coupling beam 17 and stoppers by an air pressure cylinder 18. In this state, a plate material A is conveyed to be bit between rollers 15 and 13, and the roller 15 is driven by a motor. Thus, descaling operation, etc., is carried out, but since this device has the reduced overall height of the frame, the rigidity of the frame is increased and the vibration amplification degree is decreased, thus, frame vibration during the plate-material biting is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is arranged before and after a rough rolled plate descaling device in a hot finishing strip steel rolling facility, for example, and the position of the upper pinch roller can be arbitrarily adjusted according to changes in plate thickness. This invention relates to the pinch roller device described above, particularly to a pinch roller device that has been improved in terms of anti-vibration function.

Generally, in hot finishing strip steel rolling equipment, a device is used that descales the surface school of a rough rolled plate material before finishing rolling using high pressure water jet. For example, one pinch roller device is installed before and after such a descaling device, and a pair of upper and lower pinch rollers holds and conveys the plate material.

In such a pinch roller device, for example,
As shown in the figure, each end of a pair of upper and lower pinch rollers 1.2 is supported by a frame 5 via bearings 3.4, and the bearing 3 of the upper pinch roller 1 is controlled by a cylinder type lowering device, for example, a pneumatic cylinder 6. I try to keep it down. By the way, since the opening degree of the upper and lower pinch rollers 1.2 is normally set smaller than the minimum plate thickness, it is difficult to adjust the bite of the plate material when the range of plate thicknesses is large using only the pneumatic cylinder 6 or the like. Therefore, in the past, a worm jack 7 was provided in addition to the pneumatic cylinder 6, and this worm jack 7 was given the function of adjusting the opening of the upper vinyl roller 1, so that the thick plate material A could be reliably caught. I have to.

However, in the conventional device, the pneumatic cylinder 6 and the worm jack 7 are arranged in an overlapping arrangement in the downward direction of the upper pinch row 21, that is, in a coaxial arrangement. For example, the left and right bearings 3 of the upper pinch roller 1 are connected to these connecting beams 8,
It is connected to a worm jack 7 via a pneumatic cylinder 6.

With this configuration, the pneumatic cylinder melo and the worm jack 7 are arranged coaxially, so the frame that supports them becomes bulky, and the high height above the pinch roller part makes it difficult to pinch. There was a drawback that the vibrations generated when the plate material A was bitten by the rollers 1 and 2 were greatly amplified at the upper part of the frame 5, and the vibration of the entire apparatus became large.

The present invention has been made in view of these circumstances, and uses a lowering device such as a pneumatic cylinder and an opening adjustment W worm jack, and reduces the height of the frame that supports these, and reduces the height of the plate material. It is an object of the present invention to provide a pinch roller device that can reduce vibrations during jamming.

The basic structure of the present invention to achieve such an object is to arrange the worm jack and the rolling device differently in the rolling direction, thereby lowering the height of the frame that supports them, and reducing the pinch roller portion. The objective is to reduce the overall height of the upper frame, increase frame rigidity, and reduce vibration amplification.

The present invention will be explained below based on the embodiments shown in FIGS. 3 and 4.

The frame 10 has a lower frame 11 stacked on top of each other.
and an upper frame i2, and the lower pinch roller 13 is fixed to the lower frame 12 via left and right bearings 14. The upper pinch roller 15 is supported by the lower frame 11 via left and right bearings 16 so as to be movable up and down, and is connected to a cylinder type lowering device, for example, a pneumatic cylinder 18 via a connecting beam 17 that is an intermediate member. In addition, the connecting beam 17
connects the left and right bearings 16 of the upper pinch roller 15 above it, and is movable up and down on the lower frame 11. Further, the pneumatic cylinder 18 is fixed on the upper frame 12. On the other hand, the worm jack 19 is arranged differently from the pneumatic cylinder 18 in the lowering direction, and
It is fixed to a fixed beam 20 constituting the. and,
The drive unit 19A of the worm jack 19 is connected to a stopper 22 at the upper end of the vertical beam 21, which is provided upright on the connecting beam 17.
The upper pinch roller 15 is supported so as to be able to be pushed up, and the opening degree to the lower pinch roller 13 can be adjusted.

Therefore, when conveying the plate material, the upper and lower pinch rollers 13.1 are
The opening degree of 5 is set by the worm jack 19 so that the thickness of the rough rolled plate material A is also reduced by, for example, 10.
The upper pinch roller 15 is lowered by the pneumatic cylinder 18 via the connecting beam 17 and the stopper 22 .

In this state, the plate material At is conveyed so as to be caught between the upper and lower pinch rollers 13 and 15, and the lower pinch roller 15 is driven by a motor (not shown).

In this way, descaling operations etc. are performed. According to the above-mentioned configuration, the pneumatic cylinder 18 and the worm jack 19 are arranged differently in the pinch roller pressing direction, and the worm jack 1
9 is connected to each bearing 16 of the upper pinch roller 15 via a connecting beam 17, which is an intermediate member, so that the overall height of the frame can be lowered, which is different from the conventional coaxial arrangement. In addition to increasing the rigidity, the degree of vibration amplification is reduced by reducing the length from the pinch roller portion to the upper end of the frame, and it is possible to reduce vibration of the frame when the plate material is caught.

In the above embodiment, the worm jack 19 was placed above the connecting beam 17, but by providing the worm jack 19 at a higher position than the pinch rollers 13 and 15, the worm jack 19 can be easily removed from the plate material A without requiring a special cover or the like. Wormjacking due to the scale that occurs and the water that emanates 19
This is an example of an effective way to prevent scale and water from adhering to the water tank, and in cases where scale and water tank adhesion can be prevented with an appropriate cover, etc., place the worm jack 19 near the pinch roller or in a lower place. May be placed.

For example, as shown in FIGS. 4 and 5, the worm jack 19 is fixed to the lower frame 11 via the bracket 23, and the driving portion 19A of the worm jack 19 is directly connected to the lateral protrusion of the connecting beam 17, which is an intermediate member. It may be made to abut on the end so that it can be pushed up. In short, any device may be used as long as it can reduce the height of the entire frame by differentiating the arrangement of the rolling device and the worm jack with respect to the pinch roller's rolling direction.

Note that if the pneumatic cylinder is provided with a remote-controlled pressure reducing valve, the pressing force of the upper pinch roller can be freely controlled.

Further, in the above embodiment, the worm jack 1.9 was connected to the connecting beam 17, but this worm jack is not limited to the connecting beam, but may be connected to an intermediate member provided at the connection between the upper pinch roller 15 and the rolling down device 18. Bye.

Furthermore, since the height of the frame can be reduced if the arrangement in the rolling direction is different, the arrangement of the rolling device 18 and the worm jack 19 may be reversed to that of the previous embodiment.

As described above, according to the present invention, vibration can be prevented by reducing the frame height, and the present invention is effective as a pinch roller device attached to a plate material conveying device, for example, a descaling device.

[Brief explanation of drawings]

Fig. 1 and Fig. 2 show a conventional example, Fig. 1 is a side view, Fig. 2 is a front view of Fig. 1, and Fig. 3 and Fig. 4 show an embodiment of the present invention. 3 is a side view, FIG. 4 is a front view of FIG. 3, and FIGS. 5 and 6 show other embodiments of the present invention. The figure corresponds to FIG. 4. ,.

Claims (1)

[Claims] 1. Each end of a pair of upper and lower pinch rollers is supported by a frame via bearings, and a cylinder type reduction device provides a predetermined reduction edge to each bearing of the upper pinch roller, and a worm jack is used to provide an opening between each pinch roller. In the pinch roller device, the cylinder-type rolling device and the worm jack are arranged differently with respect to the rolling direction of the upper pinch roller, and either the rolling device or the worm jack is set to the upper pinch roller. 1. A pinch roller device, which is connected to each bearing of the roller, and the other is connected to a member disposed in the middle of the connecting portion.