JPH0510171B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to a coil comprising a number of at least partially driven rollers for receiving a coil of wire supplied from a coiler for cooling and delivery to a bundling device. This article relates to a transport roll gang and its operating method.

BACKGROUND ART In the field of wire rod manufacturing, wire rods that come out of a rolling mill are generally first water-cooled. The guide tube of the coiler then forms an upright or slightly forwardly inclined coil, which then falls in a fan-like manner onto a horizontal coil transport roll gang.

On this roll gang, the wire is subjected to the desired metallurgical cooling.

For metallurgical technical reasons, in relation to the quality of the materials,
A slow cooling rate is required (1°C/sec).

To obtain this value, the rollgang must be operated at very low speeds when collecting the coils. In other words, a relatively large amount of hot coils is deposited. The stack of coils thus formed is then cooled by passing it through an adiabatic rollgang closed on all sides at a constant rollgang speed.

At the end of the rollgang, the stack of coils falls over one or more stages, is loosened, and is then widened between the coils (reducing the height of the coil stack) by a conveying mechanism operating at relatively high speeds. ,
It is supplied to the next bundling device.

Problems to be Solved by the Invention In the above-mentioned operation mode, the rolling mill down time (generally 5 seconds) increases several times, and the production efficiency decreases significantly. The reason why it is necessary to increase the rolling mill down time is that with normal rolling mill down time, the estimated coil formed may reach a point where the distance from the coiler is only approximately 500 mm. This distance must be at least 1800mm.

This degree of spacing is necessary to prevent stacks of coils from moving in and out of each other, and to ensure that the bundles can be bundled together in a bundling device without problems or failures.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a roll gang as mentioned at the beginning, which can shorten rolling mill downtime and thereby increase production efficiency.

Means of the present invention for solving the problems The gist of the roll gang for coil conveyance of the present invention that solves the above problems is that the roll gang is divided into at least two main sections in relation to its drive, and the first main section is divided into two main sections. has a number of rollers driven synchronously with one another, and the second section has a number of rollers with freewheels that are driven in whole or in part.

The gist of the operating method of the conveyor roll gang of the present invention is as follows.
The main section of
Immediately before the starting end of the length of the rolled coil is placed, the braking is performed again to the collection speed, and the second section is driven at a high speed compared to the collection speed.

Advantageous embodiments of the invention are described in the dependent claims.

Effect: By synchronous acceleration of the first section of the roll gang, it is possible to achieve a spacing of approximately 1800 mm between the coiler and the coil stack without increasing the mill downtime.

Embodiments As shown in the drawings, the roll gang for conveying coils according to the present invention has two main sections: a first section having a plurality of sections 1-14, and a second section having a plurality of sections 15-17. Consists of.

The coiler is designated by 18, the bundling device by 19 and the cooling device by 20.

The coiler 18 feeds the wire coils onto a roll gang that transports them at low speed to cause the coils to accumulate.

As the end of the wire length of one rolling pass passes the coiler, sections 1-14 of the roll gang are accelerated to a speed such that they convey the wire by approximately 1800 mm during normal mill downtime. Each section 1-14 is driven synchronously with each other. When the beginning of the new bar reaches the coiler 18, the rollgang rotates again at the collecting speed.

Categories 15 to 17 have a speed greater than this collection speed.
150-200%, so that during rolling or coiling, between sections 14 and 15 the stacking spacing of the coils is sufficiently large.

When the coil pile reaches section 15 at the collection speed, this section 15 is rotating at 150-200% of the collection speed, so if the weight of the coil pile is sufficiently on section 15, the coil The deposition of is accelerated to the feed rate.

The rollers of sections 13 and 14 are each equipped with a freewheel, so that the acceleration of the coil deposition to the feed rate is effected without slipping or damage to the material.

Each stack of coils can be considered as a rigid body, and if a freewheel is arranged in sections 13-16, the roller can be accelerated to the speed of the stack of coils itself.

According to this mode of operation, the stack of coils is always passed over the stages at the same speed to the next relatively fast transport mechanism.

Effects of the Present Invention According to the present invention, the stack of coils can be transported without problems without increasing the downtime of the rolling mill or the coiler, thereby increasing production efficiency.

[Brief explanation of the drawing]

The drawing is a schematic illustration of one embodiment of the invention. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 16, 17...Division, 18...Coiler, 19...Bundling device, 20...Cooling device.

Claims (1)

[Claims] 1. A coil conveying roll gang comprising a number of at least partially driven rollers for receiving wire coils supplied from a coiler for cooling and delivery to a bundling device, wherein the roll gang It is divided into at least two main sections 1-14; 15-17 in connection with the drive, the first main section 1-14 comprising a number of rollers driven synchronously with one another, and Second section 1
5 to 17 are provided with a large number of rollers equipped with free wheels and driven in whole or in part. 2. The roll gang for conveying coils according to claim 1, wherein the last roller of the first section is provided with a freewheel. 3 First section 1-1 formed as a cooling section
3. The coil conveying roll gang according to claim 2, wherein section 4 has a longer length than second sections 15-17. 4. A number of at least partially driven rollers for receiving the wire coils supplied from the coiler for cooling and delivery to the bundling device, which are divided in relation to the drive into at least two main sections. , a coiler of the type in which the first main section comprises a number of rollers driven synchronously with one another and the second section comprises a number of rollers with free wheels and driven in whole or in part. In the operating method of the coil conveying roll gang placed after the first main section 1 to 14, the first main section 1 to 14 is accelerated synchronously immediately after the end of one rolled coil length is placed, and at the latest during the next one rolling. The coiler is installed after the coiler, characterized in that the braking is performed again to the collection speed immediately before the starting end of the coil length is placed, and the second sections 15 to 17 are driven at a high speed compared to the collection speed. How to operate a roll gang for conveying coils.