JPH06262238A - Fluid floating type direction changing device - Google Patents

Abstract

PURPOSE:To apply a device in a non-contact passing high speed line in which a steel belt is stably worked without flaw by winding the steel belt on a rubber pad type fluid floating device, jetting fluid from the device to float the steel belt and changing the direction of the floated steel belt. CONSTITUTION:A fluid jetting port 7 is provided on an air supplying piping 6, fluid and air A are jetted from the port 7 in the direction shown by an arrow mark, the steel belt 1 is floated, passed and the direction of the steel belt is changed while interposing the fluid in a hollow part 8 between the steel belt and the piping 6 with a rubber pad 5. Thus, the device is applied in the high speed line in which the steel belt 1 is stably worked without any flaw by non- contact passing and operators' rooms are combined by optimizing the layout of factory equipment and parallel arranging the inlet and outlet of the steel belt 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid floating type direction changing device for changing the traveling direction of a steel strip.

[0002]

2. Description of the Related Art In recent years, various processing patterns have been adopted in a steel strip processing line to impart excellent materials, or productivity is improved by connecting a pickling and rolling line or a heat treatment apparatus and a plating line. Things are being tried. In such an apparatus, the line becomes extremely long, and there is a problem in the construction and operation of the line. Therefore, it is possible to install the lines in parallel and shorten the lines to make construction and operation advantageous. When the lines are arranged in parallel as described above, it is necessary to smoothly change the strip running direction of the steel strip.

As a device for smoothly converting the passing direction of the steel strip, there is a free loop system as shown in FIG. That is, FIG. 4 is a view showing a conventional traveling direction changing means. According to this figure, a so-called free loop portion 10 is made from the steel strip 1 so that it can be twisted.
This twist changes the traveling direction by 90 °. Another conventional technique is to arrange a large number of rotating small rollers in the moving direction of the steel strip as shown in FIG.
The spiral curve 11 of the steel strip 1 is
It extends along the surface of the cylindrical body 12 with a certain spiral angle. The rotating shaft 14 of the rotating small roller 13 has the spiral curve 1
They are arranged at right angles to each other and perpendicular to the diametrical direction of the cylindrical body 13 at intervals. With this arrangement, the direction of the rotating small roller circumferential velocity at the point where the rotating small roller 13 contacts the steel strip 1 always coincides with the tangential direction of the spiral curve 11, so that the steel strip smoothly changes its traveling direction along the spiral curve 11. To do.

[0004]

In the direction changing device of the free loop system in which the above-mentioned free loop portion is formed so that the free loop portion can be twisted, when a thin material such as a steel strip is bent, the strip is broken. The movement becomes unstable and high-speed transportation cannot be performed. Further, in the so-called aeroban system in which a large number of rotating small rollers are arranged in the direction of movement of each plate and the direction is changed, even if a resin is used for the rotating small rollers, it is a thin steel strip due to the flaw problem of the steel strip. There is a problem that the final product cannot be used. It prevents the occurrence of flaws due to contact surface pressure and slip like those of small rotating rollers, and enables flawless direction conversion that can be applied to thin materials such as steel strips and surface-treated steel sheets, and also provides stable and high-speed direction conversion. It is an object of the present invention to provide a direction changing device for the purpose of enabling the above.

[0005]

SUMMARY OF THE INVENTION There is a direction changing device which solves the above-mentioned problems and can be adopted for an extremely stable high speed line. The gist of the invention is that, in a device for changing the traveling direction of a steel strip, it is wound around a rubber pad type fluid levitation device, and a fluid is jetted from the rubber pad type fluid levitation device to levitate the steel strip. A fluid levitation type direction changing device characterized in that the direction is changed.

The present invention will be described in detail below with reference to the drawings. FIG. 1 is an overall conceptual view of a fluid levitation type direction changing device with a guide strip according to the present invention. As shown in FIG. 1, the steel strip 1 travels while being supported by a support roll (not shown) while being restrained by, for example, an entrance side pinch roll 2 and an exit side pinch roll 3. In this state, the levitation type direction changing device 4 is arranged to change the direction while the steel strip 1 is levitated. This levitation type turning device 4
Is a rubber pad 5 for levitation consisting of a hollow body air supply pipe 6
It is composed of Then, the steel strip 1 that has entered from the upper portion of the levitation direction conversion device 4 is inverted, the direction thereof is changed through the levitation direction conversion device 4, and the steel strip 1 advances by the exit side pinch roll 3.

Further, by using a winding type or a pinch roll by a restraining roll, a so-called steering roll, for the front and rear entrance side pinch rolls and the exit side pinch rolls of the steel strip, it is possible to stop the front and rear, and to perform meandering control. It is possible.

FIG. 2 is a sectional view of the levitation type direction changing device according to the present invention. As shown in FIG. 2, a large number of fluid injection holes 7 are provided in the air supply pipe 6, and a fluid, for example, air A, is blown from the fluid injection holes 7 in the direction in which the fluid flows as shown by the arrow, and the rubber pad 5 is used to make the steel strip 1 The steel strip 1 is floated while passing a fluid in the hollow portion 8 of the air supply pipe 6 to change the direction. Reference numeral 9 is, for example, an arrow indicating the outflow state of air. By using the levitation rubber pad in this way, flawlessness is achieved due to the non-contact threading with the steel strip, and the fluctuation of the steel strip is tracked by the rubber elasticity and fluid elasticity, so that the levitation air is very small. It is possible to secure a so-called floating amount, which is a gap, secure a stable internal pressure due to this, improve fluid energy efficiency, and prevent flaws due to rubber contact when the line is stopped.

Further, in order to improve the followability to the fluctuation of the steel strip 1, it is also effective to dispose a pair of rubber pads, for example, in a tube shape so as to face each other as a floating pad, as shown in FIG. Reference numeral 15 is an air introduction hole, and 16 is an air ejection hole.

[0010]

As described above, by implementing the present invention, it is possible to apply to a very stable high-speed line without flaws due to the non-contact passing plate, and it is possible to realize a free layout of the remodeling line. Continuous connection is possible, and also
The operator's cab can be integrated by optimizing the factory equipment layout and arranging steel strips in and out in parallel.

[Brief description of drawings]

FIG. 1 is an overall conceptual diagram of a fluid levitation type direction changing device with a guide strip according to the present invention,

FIG. 2 is a cross-sectional view of a levitation type turning device according to the present invention,

FIG. 3 is a view showing an example of a tubular rubber pad according to the present invention,

FIG. 4 is a view showing a conventional traveling direction changing means,

FIG. 5 is a diagram showing a conventional direction changing device in which a large number of rotating small rollers are arranged in the moving direction of a steel strip.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel strip 2 Input side pinch roll 3 Output side pinch roll 4 Floating type direction changing device 5 Levitating rubber pad 6 Air supply piping 7 Fluid injection hole 8 Hollow part 9 Air outflow state 10 Free loop part 11 Spiral curve 12 Cylindrical body 13 Rotating small roller 14 Rotating shaft 15 Air introducing hole 16 Air jetting hole

Claims (1)

[Claims] 1. A device for changing the traveling direction of a steel strip, which is wound around a rubber pad type fluid levitation device and ejects fluid from the rubber pad type fluid levitation device to levitate the steel strip and change the direction of the steel strip. A fluid levitation type direction changing device characterized by the above.