JPS63185510A - Inlet side refining method in steel band continuous process line - Google Patents

Abstract

PURPOSE:To make it possible to provide a cheap and space saving system as a whole by cutting and removing deformed parts and offgauge parts at the forward and rearward ends of a steel band before the steel band is inserted into a pay-off reel so as to eliminate the necessity of a rough shear on the inlet side in order to make a bite smooth. CONSTITUTION:Deformed parts and off-gauge parts of a coil 1 fed in a batch is cut and removed by laser beam cut, plasma cut, shear out or the like in at a laser process. Further, when the rear end of a refined coil 1' enters into a welder 5 from a pay-off reel 3, it stops at a predetermined position. Meanwhile the coil 1 in rear is shifted from a coil car 2 onto the pay-off reel 3, following the preceding coil 1', and then the steel band is at once fed out from the coil 1 and is therefore led into the welder 5 through a leveler 4 so that the rear end of the preceding coil 1' and the forward end of the posterior coil 1 are positioned and are then welded together before it is fed into a center process station.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an inlet crude purification method in a continuous processing line;
That is, it relates to the entry section of a continuous processing line in which steel strips of a certain length are connected and lengthened and processed continuously.

[Conventional technology]

Usually, a thickly rolled steel strip is wound into a coil as shown in FIG. 2, and this coiled steel strip (1) becomes the raw material for a continuous processing line that is a subsequent process.

However, as shown in Figures 2 and 3, this steel strip (1) has a deformed part (1a) with curling curls and poor shape due to rolling, and a slight thickness difference at both ends. It has an off-gauge part (1b) that is out of specification, and therefore, it is impossible to weld and connect it as is in order to input it into a continuous processing line.

To this end, the inlet section of a conventional continuous processing line was configured as shown in FIG. 4 or 5.

Figures 4 and 5 are, for example,
This figure shows an outline of the inlet section of the conventional continuous processing line for steel strips shown in the above publication.

Generally, in the entry section of a continuous processing line, such as a pickling line, it is necessary to weld leading and trailing steel strips in sequence and feed them into a central facility. Therefore, the inlet section plays an important role in determining the operational efficiency of the entire line, that is, the throughput.

In Fig. 4, reference numeral (1) is a coil that is a wound steel strip, (2) is a coil car that loads and transports this coil (1), and (3) is a coil car that transports the coil (1). Bayoff reel, (4) indicates a leveler. Also, (9)
is a rough shear for cutting the end portion, that is, the rear end portion and the tip portion, in order to remove the deformed portion (1a) and the off-gauge portion (1b) present at the rear end portion and the tip portion of the coil (1), (6) shows an end plate processing device for storing the scrap removed by this rough shear (9).

Next K (5) is a welding machine for connecting the rear end and tip of the coil (1), and (7) is a priddle roll for passing the preceding coil (1) through.

What is shown in FIG. 4 is an example using a 1-bay-off reel, which has been explained above, and FIG. 5 is an explanatory diagram of a 2-bay-off reel system.

This system is equipped with two bay-off reels (3) (3'), each of which is provided with a leveler (4) (4') and a rough shear (9'), as shown in Figure 4. different from others.

Next, the operation of this conventional device will be explained.

When the rear end of the coil (1') whose threading is controlled by the priddle roll (7) etc. leaves the mandrel of the bay-off reel (3), the coil or steel strip (
1) is stopped at a predetermined position by line control.

This stopping position is determined by the lengths of the deformed part (1a) and off-gauge part (1b) of the steel strip (1'), and the stopped steel strip (1') is cut by the rough shear (9) and its scrap is It falls into the end plate processing device (6).

Thereafter, the rear end of the steel strip (1') is transported into a welding machine (5) and the steel strip is positioned for welding.

Meanwhile, during this time, the coil (1) loaded on the coil car (2) is set on the bay-off reel (3), passes through the leveler (4), and is fed to the position of the rough shear (9). .

This stopping position is determined by the deformed portion (1a) and the off-gauge portion (1b), similarly to the preceding coil.

The steel strip (1) of the stopped coil is cut by a rough shear (9), and the scrap is dropped into an end plate processing device (6).

The steel strip (1) is then conveyed until its tip reaches a predetermined position within the welding machine (5), and is positioned for welding.

Next, the rear end and tip of the steel plates (1) (1') are welded.

After welding, the connected steel strips (1) (1') will be sent to a central facility for continuous processing.

Figure 4 shows the case where one set of bay-off reels (3) is installed, while Figure 5 shows the case where two sets of bay-off reels (3) are attached, and one set of bay-off reels (3) is installed. While sending out the coil (1) from the other bay reel (3
’) and set the coil (1’) in advance.
) is cut off to shorten the time required to feed the trailing coil (1').

Note that this is called a two-payoff frill system.

[Problem that the invention seeks to solve]

Since the conventional entry side section is constructed as described above, the deformed part (1a) and the off-gauge part (1b) as shown in Figs. 2 and 3 are cut with a rough shear and the end plates are processed. was. Therefore, a lot of time was required for rough purification.

Particularly in pickling lines in which rolled sheets are supplied in batches, a large amount of end plates are processed, which is a factor in reducing the operating efficiency of the inlet section.

Further, the installation space for the rough shear and the end plate processing device is large, which causes problems such as the entire line becoming long.

The coil shown in Japanese Patent Publication No. 59-51391 is based on a thin plate, so it is possible to correct the deformation to some extent with a leveler, but the coil fed into the pickling line has permanently deformed parts. Therefore, it is impossible to perform shape correction preprocessing using a leveler or the like. In addition, in the case of thin sheets, they are refined in processing lines such as pickling, so there is not much off-gauge part, but the pickling line receives coils that have been rolled in the previous process, so there is a large amount of off-gauge (Naru). Therefore, in the case of a pickling line, there was a problem in that it was necessary to cut a large amount of end plates.

This invention was made to solve the above-mentioned problems, and is a method for continuous processing lines for steel strips that eliminates the time required for rough refining of coils and provides an inexpensive entrance section that reduces space. The purpose is to obtain an inlet crude purification method.

[Means for solving problems]

The entry side rough refining method according to the present invention includes a cutting step in which deformed parts and off-gauge parts at the leading and rear ends of the steel strip are cut and removed for rough refining before the step of charging the steel strip into a bay-of-reel. It is equipped with the following.

[For production]

According to the method of this invention, since the steel strip is roughly refined before being attached to the bay-off reel, there is no need for rough refining work after the steel strip is set in the entry section, and the welding process and subsequent processes begin immediately. .

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment thereof.

In Figure 1, a steel strip or coil (1), a deformed part (1a
), off-gauge part (1b), coil car (2), bay-off reel (3), leveler (4), welding machine (5), and pre-drill reel (7) are the same as those shown in the conventional equipment or equivalent. It is something.

As described above, the overall configuration of the entrance section of this embodiment is different from that shown in FIG. 4, which shows the conventional device, in that the shear (9) and the end plate processing device (6) are removed. , other parts are the same.

Therefore, the coil (1) supplied in batches from another line has its tip and rear end deformed portions (1a) and off-gauge portions (1b) removed in the previous process.
Rough purification is performed in advance by cutting and removing by laser beam cutting, plasma cutting, shear cutting, etc.

Next, when the rear end of the coil (1') roughly refined as described in 5 above leaves the bay-off reel (3) and advances into the welding material (5), it stops at a predetermined position.

On the other hand, the trailing coil (1) is transferred from the coil car (2) to the bay-off reel (3) so as to follow the leading coil (1'), and immediately from the bay-off reel (3) to the steel strip (1'). ) is sent out, and the leveler (4
), the tip enters the welding machine (5), and the tip enters the welding machine (5).
) After positioning the rear end of the leading coil (1') and the tip of the trailing coil (1), the welding process begins and the welding is performed.
Next, the connected leading and trailing coil steel strips (1) (1
') is sent to the central processing section.

Note that although the above embodiment uses a one-payoff frill system, the same effect can be applied to a two-payoff frill system.

Furthermore, although the above embodiments have been described in the case of a pickling line, the same effects as in the above embodiments can be achieved in other continuous processing lines for steel strips.

〔Effect of the invention〕

As described above, according to the present invention, since the entrance rough refining method is configured such that the cutting step for rough refining is performed before the steel strip enters the continuous processing line, (1) the tip of the steel strip (2) Eliminates the need for rough shearing in the entrance section; (3) Eliminates deformation by removing the tip of the steel strip in advance. (Thus, automatic feeding, biting, and biting into the leveler can be performed smoothly, and the feeding time can be shortened. (4) The entire entry section is inexpensive and space-saving. (5) Since the time required to feed the steel strip into the welding machine can be shortened, it has the effect of shortening the total downtime of the input section, thereby providing an entry side rough refining method in a continuous processing line for steel strips. .

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of an inlet section for explaining an inlet rough refining method according to an embodiment of the present invention, and Fig. 2 shows a deformed part and an off-gauge part at the end of a coiled steel strip. 3 is a plan view of the end of FIG. 2, FIG. 4 is a configuration diagram of an example of the entrance section of the conventional 1-payoff ruffle system, and FIG. 5 is a diagram of the conventional 2-payoff ruffle system. FIG. 2 is a configuration diagram of one side of the ingress section of the payoff frill system. (1) (1') Steel strip (coil), (1a)
Deformed part, (1b)... Off-gauge part, (3) - Hibiki bay o reel, (4)... Repeller, (5)... Welding machine, (
6)... End plate processing device, (9)... Rough shear. In each figure, the same reference numerals indicate the same or corresponding parts. A3 figure

Claims (1)

[Claims] A cutting process in which deformed parts and off-gauge parts at the end of the steel strip are cut and removed for rough refining, before the process of charging the steel strip into a bay-of-reel, on the input side of a continuous processing line that processes steel strip continuously. 1. A method for rough refining on the inlet side of a continuous steel strip processing line, comprising: