JPH04143017A - Method for rewinding coil like strip - Google Patents

Abstract

PURPOSE:To prevent the generation of the surface flaw of strip by supplying the lubricant liquid to the strip on the initial stage for rewinding coil like strip. CONSTITUTION:The supplying of the lubricant liquid to the coil like strip 3 is performed by jetting the lubricant liquid from the industrial piping from the spray nozzle 7 by opening the solenoid valve with the operating signal from the operating room. The water is jetted to the side surface of the coil like strip 3 on the coil car 1 and the pay-off reel 5. This water intrude from the clearance of the strip into the inside of coil, the water film is formed on the surface of the strip, so the friction is reduced. The scratch on the surface generated by rubbing the strip each other during the top of strip is bitten with the equipment of the line and the tension is generated on the strip is prevented. As the lubricant liquid, the emulsion of water and lubricant oil, the emulsion of water and preservative oil or the lubricant oil and the preservative oil are used properly.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a method for unwinding a coiled strip to prevent surface flaws that occur when unwinding the coiled strip in various manufacturing processes that handle the coiled strip. It is related to.

(Prior Art) In various manufacturing processes that handle coiled strips, the coiled strips that have been processed are hooped and bundled and sent to the next process. In the next step, the coiled strip must be unwound and passed through the equipment for processing. In other words, the coiled strip sent from the previous process is cut from the binding hoop, and then the coiled strip is rotated by a coil extraction device on the coil car to extract the outer peripheral tip, and then inserted into a payoff reel. It is rewound and supplied to equipment in the line. For example, in the case of continuous processing, the unwound strip leading edge is sheared, welded to the trailing end of the preceding strip, and processed continuously following the preceding strip.

(Problem to be solved by the invention) By the way, when unwinding a coiled strip, if the binding hoop is cut, the elasticity of the strip will cause the outer circumference of the coil to loosen by a few turns, and in this state, if the strip is pulled, the strip will loosen. It tightens again, and this time,
Gouge flaws on the surface of the strip due to rubbing between the strips (
Scratches) may occur. The occurrence of these scratches not only deteriorates the surface quality of the next process, but also reduces the yield of the product. Note that if the tip of the strip gets caught in equipment in the line and tension is generated in the strip, the above phenomenon will not occur.

The present invention has been made in order to prevent the above-mentioned scratches, and is capable of unwinding a coiled strip to prevent scratches by supplying a lubricating fluid to the strip in the initial stage of unwinding the coiled strip. The purpose is to provide a method.

(Means for solving the problem) In order to solve the above problem, the present invention supplies a lubricating fluid to the coiled strip from the side surface thereof,
The purpose is to reduce the friction between the strips and prevent surface flaws caused by the friction between the strips. On the other hand, this is a method for unwinding a coiled strip in which a lubricating fluid is supplied from the side of the coiled strip to prevent surface flaws.

(Function) The present invention attempts to prevent surface flaws by supplying a lubricating fluid from the side of the coiled strip when the coiled strip is unwound. Emulsion of water and anti-rust oil, lubricating oil or anti-rust oil, etc. are used depending on the treatment process.

For example, in the case of a pickling line or a pickling line, water is used as the lubricating fluid because it does not cause any problems in the next process. Also, in the case of rolling lines, lubricating oil is used. If the lubricating fluid used in the previous step poses an operational problem in the next step, wipe the lubricating fluid off before entering that step.

The supply of lubricating fluid to the coiled strip is carried out by spray nozzles installed on both sides of the coil outlet device and the payoff reel, facing the sides of the coiled strip.

The number of spray nozzles may be one on each side, covering the sides of the coiled strip, or may be increased as needed.

The reason why the lubricating fluid is supplied from the side of the coiled strip is to allow the lubricating fluid to easily penetrate into the inside of the coiled strip.

The lubricating fluid supplied to the side surface of the coiled slip permeates into the coiled strip through the gap between the strips and forms a film of lubricating fluid on the strip surface. This film of lubricating fluid reduces the friction between the strips, causing the strips to rub against each other between the time the coiled stop is drawn out and the end of the strip biting into the tip of the strip or equipment in the line, creating tension on the strip. Prevents scratches on the strip surface.

The effective supply of lubricating fluid to the coiled strip is
It is sufficient to feed the binding hoop before it is cut until the tip of the strip gets caught in the equipment in the line and tension is generated in the strip, or it may be fed continuously.

The spray nozzle is connected to a lubricating fluid source by piping, and a solenoid valve is provided between the spray nozzle and the lubricating fluid source. This solenoid valve is opened and closed to supply lubricating fluid. Note that in order to supply the lubricating fluid by opening and closing the solenoid valve, it is necessary to increase the pressure of the lubricating fluid source in advance using a pump or the like. When water is used as the lubricating fluid, industrial water supplied within the factory is used, so there is no need to increase the pressure using a pump or the like.

(Example) Examples of the present invention will be described below. This example uses industrial water as the lubricating fluid.

FIG. 1 is a conceptual diagram for explaining the present invention in detail. In the figure, 1 is a coil car, and the coil car 1 is provided with rollers 2 for holding a coiled strip 3 and rotating it. 3 indicates a coiled strip, and 4 indicates the tip of the coiled strip after cutting the binding hoop. 5 is a payoff reel that rewinds the coiled strip after it has been drawn out;
6 is the mandrel. 7 is a spray nozzle, and the spray nozzle 7 is directed toward the side of the coiled strip 3 on both sides of the coil car 1 and the payoff reel 5, and -
They are installed one by one. The spray nozzle 7 is connected to a solenoid valve 8 through a pipe 9, and the parts after the solenoid valve 8 are connected to an industrial water pipe (not shown) through a pipe 9. 10 is a solenoid valve 8
This figure shows the flow of operation signals from the operator's cab.

During operation, the coiled strip 3 carried from the previous process is cut into binding hoops on a conveying table (not shown) before being placed on the coil car 1. While rotating the coiled strip, the coiled strip is transferred to a payoff reel 5 with the tip 4 of the coiled strip sticking out. At this time, the coiled strip loosens a few turns of the outer circumferential layer due to its elasticity. Thereafter, the coiled strip 3 is inserted into the mandrel 6 of the payoff reel 5, unwound, and bitten into equipment in the line.

The supply of lubricating fluid (water) to the coiled strip 3 is as follows:
A solenoid valve 8 is opened and closed by an operation signal 10 from a driver's cab (not shown), and water from an industrial water pipe (not shown) is directed toward the side of the coiled strip 3 of the coil car 1 and payoff reel 5. The liquid was sprayed from the spray nozzle 7. The lubricating fluid (water) was supplied from before the binding hoop was cut until the end of the strip caught in equipment in the line and tension was generated in the strip J-tube.

The water supplied to the coiled strip 3 enters the inside of the coiled strip 3 through the gap between the strips and forms a film of water on the surface of the strip. This film of water reduces the friction between the strips, and reduces the friction on the strip surface that occurs when the strip rubs hard between the time it is taken out and when it bites into the tip of the strip or the equipment in the line and creates tension on the strip. Prevents scratches.

The incidence of scratches is shown in Figure 2.

As is clear from Figure 2, by supplying lubricating fluid from the side of the coiled strip during unwinding, the incidence of scratches on the strip surface is reduced by 0.4 to 0.5 degrees. 0.3~0.
It decreased to around 4%.

In addition, in the examples, it is preferable to use water, an emulsion of water and lubricating oil, an emulsion of water and antirust oil, or lubricating oil or antirust oil depending on the treatment of the next process as the lubricating fluid to be supplied. .

(Effects of the Invention) As explained above, the present invention reduces the friction between the strips by supplying lubricating fluid from the side of the coiled strip when the coiled strip is unwound. This method is intended to prevent the occurrence of scratches, and by adopting this method, it is possible to reduce the occurrence of scratches on the surface of the strip when the coiled strip is unwound.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram for explaining the present invention in detail, and FIG.
The figure shows the incidence of scratches. 1 coil car, 2 roller, 3-coiled strip, 4-coiled strip tip, 5 payoff reel,
6 mandrel, 7 spray nozzle, 8 solenoid valve, 9
- Piping, 10~operation signal. Patent applicant: Kobe Steel, Ltd. Agent: Akira Kanemaru, patent attorney - Figure 1 U Figure 2

Claims (1)

[Claims] Winding of a coiled strip characterized in that a lubricating fluid is supplied from the side of the coiled strip to prevent surface flaws when the strip is sequentially unwound and passed through the coiled strip. How to return.