JPH0359770B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for continuously winding rolled material in a continuous rolling line, and is intended to wind up rolled material without stopping the rolling line.

Generally, the rolling operation is carried out by feeding the rolled material one by one to a rough rolling mill and a finishing rolling mill, and winding it into a coil shape using a coiler.

FIG. 1 shows an outline of a conventional hot rolling line.

An intermediate roller table 3 for guiding the rolled material is provided between the rough rolling mill 1 and the finishing rolling mill 2, and a runout table 5 and a cooling device 6 are provided downstream of the finishing rolling mill 2. Further downstream, a first pinch roll 7, a first coiler 8, a second pinch roll 9, and a second coiler 10 are arranged. When the rolled material 11 is supplied to the rolling line to the rough rolling mill 1, the rough rolled material 11 is transferred to the finishing mill 2.
sent to. Rolled material 1 passed through finish rolling mill 2
1 is cooled by a cooling device 6, passes through a first pinch roll 7, and is wound up by a first coiler 8. After being wound up by the first coiler 8 , the rolled material 11 passes through the second pinch rolls 9 and is wound up by the second coiler 10 . Therefore, in the above method, it is necessary to adjust the tip shape of the rolled material and to insert the rolled material between the upper and lower rolls of the rolling mill, etc. between supplying the preceding rolled material and supplying the trailing rolled material. During this time, there is a problem that there is a period of time when no rolling work is performed, resulting in low effective utilization of the equipment and poor productivity.

In order to effectively solve the above-mentioned problems, the present invention has been made regarding the divisional winding of rolled material among the recently proposed continuous equipment. A continuous winding method is provided in which the rolled material is sequentially guided to a branch line by the fluid pressure of a high-pressure fluid and wound around a coiler provided in front of the branch line, and the material is rolled from rolling to winding in a continuous rolling operation. The purpose is to efficiently utilize equipment and improve productivity.

The gist of the present invention to achieve such an object is to divide the downstream part of the running line for rolled material into a plurality of branch lines, and to provide a coiler in front of the terminal end of each branch line so that the rolled material reaches each branch line. Then, the rolled material is guided to one branch line by the fluid pressure of high-pressure fluid, and wound by one coiler passing through this one branch line. During this winding, the rolled material is cut on the upstream side of the branch line. , a method for continuously winding a rolled material, characterized in that the cut rolled material is guided to another branch line by the fluid pressure of a high-pressure fluid, and then guided to another coiler via the other branch line. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for continuously winding a rolled material according to the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows an outline of a hot rolling line for carrying out the method of the present invention, and FIG. 3 shows an enlarged view of the direction switching portion in FIG. 2.

Between the rough rolling mill 1 and the finishing rolling mill 2, an intermediate roller table 3 for guiding the rolled material and a running welding machine 4 for joining the rolled material are provided. A runout table 5 and a cooling device 6 are provided. A pinch roll 20, a shear 21, an intermediate runout table 22, and a pair of upper and lower switching pinch rolls 23 are arranged in this order on the rolling downstream side of the cooling device 6, and the upper pinch roll 23a is controlled by a cylinder 24 in the rolling pass line X direction. It is possible to travel back and forth. Rolling pass line X downstream of switching pinch roll 23
Jet nozzles 25, 25a, which are high-pressure fluid supply means, are provided above and below with the jet nozzles 25, 25a in between, and downstream of the jet nozzles 25, 25a, a guide is provided for the rolled material 11 whose course is changed by the jet flow of the jet nozzles 25, 25a. A fixed guide 26 is provided. The fixed guide 26 is provided with an upper passage 26a and a lower passage 26b with the rolling pass line X in between. A first intermediate pinch roll 27 and a second intermediate pinch roll 28 are provided above and below the rolling pass line X downstream of the fixed guide 26, and the fixed guide 26 and the first and second intermediate pinch rolls 27, 28 The first with multiple roles in between
A guide table 29 and a second guide table 30 are provided. Further, on the downstream side of the first guide table 29, a first runout table 31, a first coiler pinch roll 32, and a first coiler 33 are arranged in order, and on the downstream side of the second guide table 30, a second A runout table 34 and a second coiler pinch roll 35 are arranged in this order, with the first coiler pinch roll 32 from the first guide table 29 and the second coiler pinch roll 34 from the second guide table 30.
Each branch line is made up of the above.

In other words, the rolled material 11 that has passed through the pinch rolls 23
After being changed course by the jet flow from the jet nozzles 25, 25a and passing through the fixed guide, it is moved by the intermediate pinch rolls 27, 28 by the guide tables 29, 30.
It is guided by the coilers 33 and 35 and wound up.

Next, the above structure and a method of continuously winding a rolled material in a rolling line will be explained.

First, the upper pinch roll 23a is moved back to the upstream side, and a jet stream is ejected from the lower jet nozzle 25a. When the tip of the rolled material 11 passes through the switching pinch rolls 23 in this state, the tip of the rolled material 11 will be directed slightly upward, and the jet nozzle 25a will further direct the tip of the rolled material 11 toward the fixed guide 23.
It passes through the first guide table 29 and the first intermediate pinch roll 27 . The rolled material 11 that has passed through the first intermediate pinch rolls 27 is guided to a first runout table 31, guided to a first coiler pinch roll 32, and then wound around a first coiler 33. 1st coiler 3
3, when the winding is almost completed, the rolled material 11 is cut by the shear 21, and the rolled material 11, which has become the preceding material, is cut off by the shear 21.
A is wound up and the winding at the first coiler 33 is completed. On the other hand, after the rear end of the rolled material 11a that was cut and became the leading material passes through the fixed guide 26, the upper pinch roll 23a is advanced downstream to stop the jet flow from the jet nozzle 25a, and at the same time, the jet nozzle 25 jets the jet flow. let

The rolled material 11 that was cut in this state and became the trailing material
When the tip of the rolled material 11 passes through the switching pinch roll 23, the rolled material 11 is directed slightly downward, and is further guided into the lower passage 26b of the fixed guide 26 by the jet nozzle 25, and passes through the second guide table 30 to the second intermediate Passes through pinch rolls 28. Second
The rolled material 11 that has passed through the intermediate pinch rolls 28 is guided to a second run-out table 33, led to a first coiler pinch roll 34, and then wound around a second coiler 35. During the winding by the second coiler 35, the first coiler 33 is replaced to prepare for the next winding. When the second coiler 35 almost finishes winding, the rolled material 11 is cut again by the shear 21, and the rear end of the rolled material 11a, which becomes the cut preceding material, passes through the fixed guide 26, and then the upper switching pinch roll 23a is moved back to the upstream side again, the jet nozzle 25 stops the jet flow, and at the same time the jet nozzle 25a jets the jet flow.

By repeating the process of alternately switching and guiding the rolled material 11 cut during winding to the first guide table 29 and the second guide table 30 as described above,
The rolled material 11 can be continuously wound around the coiler without stopping the rolling line. In addition, Sear 2
Rolled material 11a that was cut by 1 and became the preceding material
is accelerated by the intermediate run-out table 22 to maintain a distance from the rolled material 11 which has become the following material. Further, in each of the runout tables 31 and 33, the rear end of the rolled material 11a is decelerated to prevent the rear end of the rolled material 11a from jumping up, and to prevent the rear end from catching up with the front, so-called tucking. It is prevented. Acceleration and deceleration of these runout tables 22, 31, and 33 are appropriately determined according to the thickness of the rolled material 11.

The above embodiment is applied to winding of rolled material on a hot rolling line, but it is of course also applicable to winding of rolled material on a cold rolling line. In addition, although two branch lines were provided to provide two coilers, it is also possible to provide three or more, and the jet nozzles 25 and 25a were used to alternately perform jetting to guide the rolled material. , 25a are operated at the same time with different injection flow pressures, etc., but the present invention is not limited to the above embodiment.

As described above in detail based on one embodiment, according to the present invention, the rolled material is guided to the branch line by the jet flow pressure of the high-pressure fluid, so even if the thickness of the rolled material changes. Since the rolled material can be guided easily and reliably by changing the jet pressure, it can be applied to rolled materials of various thicknesses. Therefore, it has become possible to continuously wind up the rolled material without stopping the rolling line, allowing continuous rolling to be carried out efficiently, increasing the effective utilization of equipment, and improving productivity.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of a conventional hot rolling line, Figure 2
The figure is a schematic diagram of a hot rolling line for carrying out the method of the present invention, and FIG. 3 is an enlarged view of the direction switching portion of the rolled material in FIG. 2. In the drawing, 21 is a shear, 22 is an intermediate runout table, 23 and 23a are switching pinch rolls,
25, 25a are jet nozzles, 29 is a first guide table, 30 is a second guide table, and 32 is a first guide table.
Coiler pinch rolls, 33 is a first coiler, 34 is a second coiler pinch roll, and 35 is a second coiler.

Claims (1)

[Claims] 1. The downstream part of the running line for rolled material is divided into a plurality of branch lines, and a coiler is provided in front of the terminal end of each branch line so that the rolled material reaches each branch line, and the rolled material is exposed to high pressure fluid. The rolled material is guided to one branch line by fluid pressure, and wound by one coiler passing through this one branch line. During this winding, the rolled material is cut on the upstream side of the branch line, and the cut rolled material is passed through high-pressure fluid. A continuous winding method for a rolled material, characterized in that the material is guided to another branch line by fluid pressure, and is guided to another coiler via the other branch line.