JPH0616918Y2 - Bend floater consisting of multiple divided units - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is a bend composed of a plurality of divided units for adjusting a jet fluid pressure for supporting a strip-shaped body in a non-contact state. Regarding floaters.

<Prior Art> A contact type guide such as a guide roll is generally used as a means for changing the direction of a running strip at a predetermined angle (for example, 90 °). Such a contact type guide is applied to, for example, a strip. In this case, the strip surface is damaged in the unsolidified strip surface in the continuous hot dip galvanizing line, or the strip surface is picked up on the guide (hearth roll in the furnace) in the continuous processing line with a built-in direct heating furnace. However, there are drawbacks such as the generation of push flaws, and for this reason, non-contact supporting devices have been conventionally proposed.

For example, the apparatus main body is configured to be tiltable in the width direction of the belt-shaped body, and the flow rate of the ejected fluid is adjusted by a plurality of pressure chambers divided in the width direction of the belt-shaped body to be supported. No. 002676), an extra opening is sealed according to the width of the strip (see Japanese Patent Laid-Open No. 164937/1982), the strip support surface of the device is inclined with respect to the horizontal plane, A device that prevents the strip from moving sideways (JP-A-63-1).
No. 76435).

<Problems to be Solved by the Invention> The devices disclosed in the above publications each have good stripability with respect to a change in the shape of the strip in the strip width direction and displacement of the running position such as meandering. It is possible to prevent the horizontal movement of the belt-like body by sealing the excess opening.

However, in such a conventional technique, the fluid cannot be sufficiently trapped on the lower surface of the strip-shaped body on the inlet side and the outlet side of the bend floater for supporting and changing the direction of the traveling strip-shaped body in a non-contact manner. The fluid was ejected from the bend floater in an amount sufficient to secure the floating amount of the portion.

Therefore, there is a problem that an excessive amount of fluid is ejected in the central portion of the bend floater.

The present invention relates to a bend floater that changes the direction of a strip or the like in a non-contact state. The bend floater is composed of a plurality of divided units so as to secure a sufficient floating amount of the strip and reduce the amount of ineffective fluid. Is intended to provide.

<Means for Solving the Problems> According to the present invention in order to achieve the above object, a fluid is jetted to the lower surface of a traveling strip to support the strip in a non-contact state, and the traveling direction thereof. In the bend floater for converting the, a guide surface having an arcuate cross section is formed on the outer surface,
In addition, the inside has a chamber divided into at least three chambers in the moving direction of the strip, and an independent pipe for fluid supply is connected to each of the divided chambers, and a fluid is provided on the guide surface corresponding to each chamber. There is provided a bend floater composed of a plurality of divided units, which is provided with a nozzle for ejecting air, and a regulating valve for regulating each fluid pressure in each of the pipe systems.

The present invention will be described in more detail below with reference to an embodiment shown in FIGS. 1 and 2.

The drawing shows a state in which a strip 3 floated and supported by a fluid ejected from a nozzle 2 provided on the surface of a chamber 1 is turned by a bend floater 4 by 90 ° and passed.

The angle of direction change by the bend floater 4 is
It can be turned in any direction without being limited to 90 °.

In FIG. 2, a guide surface 5 having an arcuate cross section is formed on the outer peripheral surface of the chamber 1, and the inside is divided into at least three chambers 1a, 1b, 1c in the moving direction of the sleet top 3.

The guide surface 5 is provided with a large number of slit-shaped ejection nozzles 2 or through holes of an appropriate size in the circumferential direction.

Independent pipes 6a, 6b, 6c for fluid supply are connected to the chambers 1a, 1b, 1c, respectively. An adjustment valve 7 for adjusting the flow rate is provided in each of the pipes 6,
The pressure of the fluid supplied to each chamber 1 can be adjusted individually. Reference numeral 8 is a booster for supplying a fluid.

According to the device of the present invention, the strip 3 is redirected along the guide surface 5, with the nozzle 2 of the guide surface 5
By ejecting the fluid from the strip 3, the strip 3 is supported in a non-contact state with the guide surface. At this time, the flow rate of the fluid ejected from the nozzle 2 is adjusted in each chamber 1 divided in the moving direction of the strip 3 according to the position, shape, etc. of the strip 3, and the fluid flow rate is adjusted for each pipe 6. Valve 7
Is adjusted so that fluids having different flow rates, that is, pressures, are ejected in each chamber 1.

In this way, the strip 3 can be turned without contacting the strip 3 on the inlet and outlet sides of the bend floater 4 and without ejecting an excessive flow rate of fluid at the middle portion of the bend floater 4.

The ejection nozzle 2 is not limited to the slit in the plate width direction, and may be a slit in the plate passing direction or a through hole having an appropriate size.

In addition, in order to cope with cases such as when the bend floater is passed through at a high line speed and high temperature, a mechanism for adjusting the temperature of the fluid ejected from the bend floater is provided to eject the fluid that has been preheated to the same extent as the passing strip. When there is no cold air, it is preferable to blow cold air or the like.

<Examples> The present invention will be specifically described below based on Examples.

(Example 1) A bend floater shown in Fig. 1 is provided at a portion where a steel strip having a plate thickness of 0.9 mm and a strip width of 1200 mm is vertically lifted in the middle of a conveying system and is then turned 90 ° in a non-contact state. The sheet was continuously conveyed for 20 hours at a conveying speed of 100 m / min, but it was stably conveyed without the occurrence of meandering.

The fluid ejected from the bend floater was air at room temperature.

For comparison, when the conveyance was carried out in exactly the same manner as in the above-mentioned example except that a bend floater in which the chamber was not divided was used, several meandering occurred. In addition, as a result of comparing the power consumptions of the air supply blowers, in Example 1, about 1
The amount of power consumption has been reduced by 0%.

<Effects of the Invention> Since the present invention is configured as described above, in a bend floater that supports strips or other strips in a non-contact state, the strips can be stably transported and simple equipment is used. This has the effect of reducing the amount of ineffective fluid and saving energy consumption.

[Brief description of drawings]

FIG. 1 is a sectional view of a bend floater showing an example of the present invention. FIG. 2 is a perspective view of the bend floater of the present invention. Explanation of reference numerals 1 ... Chamber, 2 ... Nozzle, 3 ... Strip, 4 ... Bend floater, 5 ... Guide surface, 6, 6a, 6b, 6c ... Piping, 7 ... Regulator valve, 8 ... Booster

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ryoichi Ide Creator 1 Ryoichi Mizushima Kawasaki-dori, Kurashiki City, Okayama Prefecture (no address) Inside the Mizushima Works, Kawasaki Steel Co., Ltd. 4-6-22 Mitsubishi Heavy Industries, Ltd. Hiroshima Works (72) Inventor, Etsuro Hirai 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima Mitsubishi Heavy Industries Ltd.

Claims (1)

[Scope of utility model registration request] 1. A bend floater for injecting a fluid onto a lower surface of a traveling belt to support the belt in a non-contact state and to change its traveling direction, a guide surface having an arc-shaped cross section is formed on an outer surface thereof. And, the inside has a chamber divided into at least three chambers in the moving direction of the strip, and an independent pipe for fluid supply is connected to each of the divided chambers, and a guide surface corresponding to each chamber is provided. Is a nozzle for ejecting fluid, and a regulating valve for regulating the pressure of each fluid is further provided in each of the piping systems. A bend floater composed of a plurality of divided units.