JPH05337532A - Fluid floating direction changing device - Google Patents

Abstract

PURPOSE:To enable non-flaw direction changing and stable high speed direction changing in a high speed line for a thin material such as a steel strip and a surface treated steel plate. CONSTITUTION:In a device by which the direction of propagation of the steel strip 1 is changed, the steel strip 1 is superposed with an endless guide strip 2 which is moved at the same speed to the speed of the strip 1, the steel strip 1 and guide strip 2 are wound on a floating direction changing device 3 and floated to change the direction by jetting a fluid from the floating direct changing device 3. Then, the steel strip 1 and guide strip 2 are separated and the direction of the steel strip 1 is changed. Thus, this method is applicable in a non-flaw extremely stable high speed line by non contact passing. Further, continuation of a modified line is possible and the optimization of factory layout and the overall control of an operating room by a prallel positioning of the steel strips at the entrance and exit is realised.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid floating 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 12 of the steel strip 1 is
It is along the surface of the cylindrical body 11 with a certain spiral angle. The rotating shaft 14 of the rotating small roller 13 has the spiral curve 1
They are arranged orthogonally to 2 and perpendicularly to the diametrical direction of the cylindrical body 11 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 12, so that the steel strip smoothly changes its traveling direction along the spiral curve 12. 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, high-speed direction conversion. An object of the present invention is to provide a direction changing device aiming to enable 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, in an apparatus for converting the traveling direction of a steel strip, superposed on an endless guide strip that travels at the same speed as the steel strip, and wound around the levitation direction conversion apparatus from the levitation direction conversion apparatus. A fluid levitation direction changing device characterized in that a fluid is ejected to float a steel strip and a guide strip to change the direction, and then separate the steel strip and the guide strip to change the direction of the steel strip. ..

[0006]

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 direction changing device with a guide strip according to the present invention. As shown in Figure 1,
The steel strip 1 is superposed on an endless guide strip 2 which travels at the same speed while being constrained by an entrance-side pinch roll 5 and an exit-side pinch roll 6, and travels while the steel strip 1 is supported by a support roll 4. The support roll 4 applies tension to the guide strip in the direction of the arrow by controlling the tension with a torque motor or the like. In this state, the flying direction changing device 3 is set to, for example, 4
Individually arranged, the steel strip and the guide strip are floated while the direction is changed. The steel strip 1 is superposed on a lower portion of an endless guide strip 2 which runs at the same speed as the steel strip via a support roll 4.

Next, the flying direction changing device 3-1 changes the direction together with the guide strip 2, and the guide strip and the steel strip that have entered from the lower part of the floating direction changing device are reversed so that the steel strip becomes the upper part and the guide strip becomes the lower part. And second
The steel strip and the guide strip are turned over again via the levitation direction changing device 3-2, the steel strip becomes the lower part, and the guide strip becomes the upper part to change the direction of the steel strip. 3, the steel strip 1 is advanced by the exit side pinch roll 6. If the guide strip 2 and the steel strip 1 are separated from each other by the flying direction changing device 3-2, 90 °
It will be used as a direction changing device.

On the other hand, the guide strip is separated from the steel strip from the third levitation direction changing device 3-3, is changed in direction by the fourth levitation direction changing device 3-4, and again travels endlessly via the support roll 4. It joins the steel strip.
In this way, the tension of the endless guide strip is controlled to a constant value by the support roll.
The entrance-side pinch roll 5 and the exit-side pinch roll 6 convey the steel strip 1 and have the same speed as the steel strip while matching the speed with the flying direction changing device group.

FIG. 2 is a sectional view of the flying direction changing device according to the present invention. As shown in FIG. 2 (A) or (B), a large number of fluid injection holes 9 are provided in the header 7, and a fluid, for example, air is blown from the fluid injection holes 9 in the direction of the fluid flow as shown by the arrow, so that the side seal is formed. By means of 8, fluid is interposed between the guide strip 2 and the header 7, and the guide strip 2 is floated while passing through it to change the direction.

FIG. 3 is a view showing a method of changing the direction for returning the guide strip by the flying direction changing device according to the present invention. 1 is an example in which four levitation direction conversion devices are provided, but as shown in FIG. 3, the required number of levitation direction conversion devices can be reduced respectively.
To achieve the purpose of changing the direction of the guide strip 2 by using three floating direction changing devices in FIG. 3A, three in FIG. 3B, and two in FIG. 3C. Can be done.

As described above, the steel strip is not in contact with the header 7 and is overlapped with the guide strip to change the strip passing direction. Conventionally, when the steel strip is directly floated, the strip width is changed every time the strip width changes. There was a need for countermeasures for blowing out the fluid from the levitation direction changing device, but this countermeasure is not necessary and even if the strip width of the steel strip is changed by always raising the guide strip with a constant width. , The measures for it became unnecessary. Further, since the guide strip having a constant width floats, the fixed side seal can be arranged at an optimum position, and the meandering control and the floating effect are improved.

Further, depending on the conditions, since a resin-based guide strip can be used, a flaw of the steel strip does not occur, and by adopting a floating direction changing device,
The power for driving the guide strip is unnecessary or very small, the frictional force for floating is almost zero, and it can move following the steel strip lightly. In the present invention, an example in which the steel plates on the inlet side and the outlet side are constrained by pinch rolls is shown, but other methods such as a side guide may be used,
It goes without saying that no particular restraint means is required as long as the passing plates in the front and rear devices are stable.

[0013]

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
This has many industrial advantages such as optimization of the factory equipment layout and the comprehensive arrangement of the operator's cab by arranging steel strips in and out in parallel.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of a flying direction changing device according to the present invention.

FIG. 3 is a diagram showing how to change the direction of the guide strip by the flying direction changing device according to the present invention.

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel strip 2 Guide strip 3 Floating direction conversion device 4 Support roll 5 Input side pinch roll 6 Output side pinch roll 7 Header 8 Side seal 9 Fluid injection hole 10 Free loop part 11 Cylindrical body 12 Helical curve 13 Rotating small roller 14 Rotating shaft

Claims (1)

[Claims] 1. A device for converting the traveling direction of a steel strip, which is superposed on an endless guide strip traveling at the same speed as the steel strip and wound around a floating direction changing device to eject a fluid from the floating direction changing device. And the guide strip is floated to change the direction, and then the steel strip and the guide strip are separated to change the direction of the steel strip.