JP2759098B2 - Strip floating support device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for supporting the floating of a strip applied to, for example, a continuous plating line.

[Prior Art] FIG. 2 is a side view of a conventional strip floating support device,
FIG. 3 is a detailed view of the essential parts, and FIG. 4 is an explanatory diagram of these operations. In FIG. 2, for example, in a continuous plating line or the like, after a strip 6 is passed through a plating pot 9, the air supplied from a blower 8 is dried in a non-contact state by a 90 ° split floater 1 to dry it. The strip 6 is distributed to the floater 7 having a 90 ° bend by the pipe 2, and is dried and transported while the strip 6 is floated and supported by the jetting air. 10 is a roll.

In FIG. 3, air for floating a strip 6 is supplied to a 90 ° split floater 1 by a pipe 2.
The air is blown toward the strip 6 from the slit nozzles 3 at both ends of the floater 1 and the blowing holes 4 formed in the upper surface of the floater 1. The rib 5 provided on the upper surface of the floater 1 is for holding a pressure pocket between the strip 6 and the floater 1 so that air blown out from the slit nozzle 3 does not escape in the width direction of the strip 6. Also,
The slit nozzles 3 at both ends face each other at an angle of 30 ° in order to supply air in the longitudinal direction of the strip 6. The surface of the floater 1 is a curved surface having a radius R, and the central angle θ is 90 ° / 5. The 90 ° bend floater 7 in FIG. 2 has almost the same structure.

[Problems to be solved by the invention]

In FIG. 4, the strip 6 floats and is conveyed by the 90 ° split floater 1. However, as shown in FIG. 4, the floating height of the strip 6 is small at the slit nozzle 3 'located at the vertical portion of the floater 1. Become. This occurs because the strip 6 is sagged due to its own weight because there is no floater to be supported next, that is, the so-called catenary of the strip 6 is received only by the slit nozzle 3 'in the vertical portion.
If the air amount to the floater 1 is increased to increase the floating amount of the strip 6, the floating amount is increased as a whole, and the floating on the floater 1 becomes uneven.

Thus, in the conventional strip levitation support device, when the air amount to the floater 1 is increased to increase the levitation amount of the strip 6, the levitation amount of the strip 6 increases and the levitation becomes uneven. This causes the strip 6 to move up and down or meander, causing unstable running, causing the strip 6 to contact the floater 1 and increasing the capacity of the blower 8 to increase equipment and operating costs. I have

[Means for solving the problem]

The floating support device for a strip according to the present invention aims to solve the above-mentioned problems, and the upper surface facing the strip is curved in a convex shape and connected vertically, and is divided in the horizontal direction with respect to the running direction of the strip. A split floater provided at the top of each split floater and having an upper surface facing the strip substantially horizontally, and an apparatus for adjusting the inclination of the upper face with respect to the running direction of the strip at the bottom of the split floater And a non-contact meter on the upper surface for measuring the flying height of the strip.

[Action]

That is, in the strip floating support device according to the present invention, the upper surface of the divided floater located at the uppermost portion is installed substantially horizontally, and the inclination of this upper surface with respect to the running direction of the strip corresponds to the floating amount of the strip. Adjusted.

〔Example〕

FIG. 1 is a side view and a front view of a strip floating supporting apparatus according to an embodiment of the present invention. In the drawing, the floating support device for a strip according to the present embodiment is as shown in the drawing.
The upper surface of the uppermost floater 1a of the 90 ° split floater 1 has a shape almost horizontal to the running direction of the strip 6, so that the catenary of the strip 6 can be evenly received. A displacement sensor 13 is mounted on the upper surface of the uppermost floater 1a at substantially the same height as the ribs 5,
A support device 11 that changes the inclination of the uppermost floater 1a at the bottom
And the cylinder 12 are arranged, and the uppermost floater corresponds to the catenary according to the transfer conditions such as the tension of the strip 6.
1a The angle of the upper surface can be adjusted.

Thus, the upper surface of the uppermost floater 1a is stripped 6
Uppermost floater which bears the weight of the horizontal portion of the strip 6 by making it almost horizontal so as to follow the catenary of
Since the pressure receiving surface of the top floater 1a can be increased and the upper surface of the uppermost floater 1a cannot cope with a fixed shape due to different transport conditions such as the tension of the strip 6, the inclination of the upper surface of the uppermost floater 1a is reduced. The inclination can be optimally set for the catenary by measuring the floating amount of the strip 6 with a non-contact type displacement meter mounted on the upper surface of the uppermost floater 1a.

Note that the uppermost floater 1a is adjacent by tilting it.
Since gas blow-through occurs between the floater 1 and the 90 ° splitter, which may adversely affect the floating of the strip 6, an extendable bellows joint (not shown) is provided at the joint thereof. Further, by attaching a plurality of displacement sensors 13, it is possible to measure the catenary together with the flying height of the strip 6. As a result, the floating amount of the strip 6 in the uppermost floater 1a increases, and the uniform floating of the strip 6 over the entire floater is achieved.

〔The invention's effect〕

The strip floating support device according to the present invention is configured as described above, and the upper surface of the uppermost split floater is installed substantially horizontally, and the inclination of the upper surface with respect to the running direction of the strip is determined by the floating amount of the strip. Is adjusted accordingly, so that the flying height of the strip can be made uniform, the strip can run stably, and there is no need to increase the capacity of the blower, eliminating the high cost of equipment and operation. Is played.

[Brief description of the drawings]

1 (a) is a side view of a strip floating supporting apparatus according to an embodiment of the present invention, FIG. 1 (b) is a front view thereof, FIG. 2 is a side view of a conventional strip floating supporting apparatus, FIG. FIG. 3 is a detailed view of the main part, and FIG. 4 is an explanatory diagram of these operations. 1 ... 90 ° split floater, 1a ... top floater, 2 ... pipe, 3 ... slit nozzle, 4 ... blowout hole, 5 ... rib, 6 ... strip, 8 ... blower, 11 ... ... Support device, 12 ... Cylinder, 13 ... Displacement sensor.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Katsuhiko Iwanuma 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. 1-chome (without address) Inside Kawasaki Steel Corporation Mizushima Works

Claims (1)

(57) [Claims] An upper surface facing a strip is curved in a convex shape, and is vertically connected to each other. The upper surface facing each of the strips is located at the uppermost portion of each divided floater which is divided in a lateral direction with respect to a running direction of the strip. A split floater provided substantially horizontally, a device at the bottom of the split floater for adjusting the inclination of the upper surface with respect to the running direction of the strip, and a non-contact type measuring the floating amount of the strip on the upper surface And a device for supporting the levitation of a strip.