JPH06304651A - Method for unwinding strip in continuous strip processing equipment - Google Patents

Abstract

PURPOSE:To process a strip, while the defects of the strip is removed, by leaving a divided and remaining undispensed coiled strip as it is and, after dispensing into a processing equipment a different strip from a different pay-off reel, newly dispensing into the processing equipment. CONSTITUTION:A strip 25 which is being dispensed from a pay-off reel 1 into a processing equipment 5 is suspended in the middle, the strip 25 is divided into two by a cutting device 19, while a different strip 26 is dispensed from a different pay-off reel 2 into the processing equipment 5, the defective part of the divided and remaining undispensed coil 23 is cut off by the cutting device 19, and after the different strip 26 is dispensed from the different pay-off reel 2 into the processing equipment 5, the undispensed coil 23 is newly dispensed into the processing equipment 5. Consequently, the time consuming replacement of a coil is unnecessitated, and a drop in productivity is prevented without reducing a passing speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip dispensing method for continuously stripping strips in a strip continuous processing facility such as a continuous annealing line.

[0002]

2. Description of the Related Art At least two payoff reels for winding a coiled strip into a processing facility while rewinding it, and a welding device for connecting a previously stripped-out leading strip and a succeeding strip to be dispensed from now on, In a strip continuous processing facility having a cutting device capable of cutting the strip being dispensed on the upstream side of the facility, it has been generally known that a plurality of payoff reels are alternately used to continuously dispense the strip into the processing facility. Has been done.

The appearance of the coil made of the material to be passed through the equipment is inspected before it is passed, and when it is judged that the coil cannot be passed because a defect such as a crack in the middle of the coil is found. It has been generally practiced in the past that, after removing the defective portion with another equipment, the strip continuous processing equipment is passed through again.

Further, for example, when a defect such as a baldness which cannot be seen by a visual inspection is found in the middle of paying out the strip and the defective part cannot be passed through as it is, the defective part is removed by a cutting device installed in the strip continuous processing facility. Since it takes time to cut off, the strip is cut in the middle of paying out, and the remaining unpaid coil is once taken out from the pay-off reel and after removing the defective part with another facility,
It is generally practiced to pass the strip continuous processing equipment again.

[0005]

However, when a defect is found in the coil middle part by visual inspection after the payoff reel is mounted, or when a defect is found in the middle of paying out the strip, the payoff reel is replaced with the unpaid coil. It is necessary to pull out from the coil saddle in front of the payoff reel, but to do this, it is necessary to rearrange the succeeding coils already prepared on the coil saddle in front of the payoff reel and make an empty space for the unpaid coil sent back. There is.

Since the rearrangement work of these coils takes time, until the rearrangement work is completed, the unpaid coil is removed from the pay-off reel, and the next coil is mounted on the pay-off reel, the continuous strip processing equipment is operated. There was a problem that the plate speed had to be reduced and the productivity was lowered.

Further, since the defective portion is removed by another equipment, it takes time until the unpaid coil can pass through the strip continuous processing equipment again, and the defective portion is removed. Therefore, there is a problem that the equipment cost becomes high because it is necessary to have another equipment.

The present invention has been made in view of the above-mentioned problems of the prior art, and its main purpose is to improve the productivity of strip continuous processing equipment without increasing the equipment cost. Especially.

[0009]

SUMMARY OF THE INVENTION According to the present invention, at least two or more payoff reels are provided for unwinding a coiled strip into a processing facility while rewinding the coiled strip, and a preceding strip already dispensed. In a strip continuous processing facility that has a welding device that connects the following strip to be dispensed and a cutting device that can cut the strip that is being dispensed, in the process of dispensing the strip that is being dispensed from a payoff reel into the processing facility. Discontinue payout at 2, and divide into two by the cutting device, and of the divided strips, the strip that has already been dispensed into the processing facility is the other strip whose end is dispensed from another payoff reel. The remaining undivided coil is welded to the end of The strips in the strip continuous processing facility are characterized in that they are dispensed from the other payoff reels into the processing facility without being taken out from the payoff reel as they are, and then again into the processing facility. Method is provided.

[0010]

In this way, the payout of the strip being paid out from a certain pay-off reel into the processing equipment is stopped halfway, and the strip is divided into two by the cutting device,
While paying out another strip from another pay-off reel into the processing facility, the defective part of the remaining unpaid coil that has been divided is cut off by the cutting device, and another strip from another pay-off reel into the processing facility. After paying out, the unpaid coils are again paid out into the processing equipment, which eliminates the need for time-consuming coil rearrangement and reduces productivity by reducing the strip running speed of the strip continuous processing equipment. The strip can be continuously processed without causing

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings.

FIG. 2 shows a schematic structure of a continuous annealing line for strips to which the present invention is applied. A pay-off reel 1 and a pay-off reel 2 are installed at this line entrance. These payoff reels 1, 2 to strip 3
Is continuously supplied, but after the leading end and the end of the strip are cut and aligned by the cutting device 19, the leading end of the latter strip is superposed on the end of the previous strip by the welding machine 4 and welded. The strips are continuously supplied to the cleaning device 5.

The cutting device 19 is generally widely installed as a double-cut shear type device capable of separately cutting the strips fed from the payoff reels 1 and 2, and the strips are fed from one of the payoff reels. While paying out, the tip end of the coil mounted on one payoff reel can be cut at the same time. Strip 3 supplied to cleaning device 5
Is cleaned, the amount of supply of which is adjusted by the entrance looper device 6, and then fed into the treatment equipment for performing the annealing treatment. Then, the heating furnace 7, the soaking furnace 8, the primary cooling furnace 9,
The strip 3 which has been annealed according to a predetermined heat cycle through the overaging furnace 10 and the secondary cooling furnace 11 is sent to the skin pass mill 13 after the delivery amount is adjusted by the delivery side looper device 12.

After being temper-rolled by the skin pass mill 13, a coil is wound on either one of the tension reels 15 and 16 as take-up reels arranged before and after the strip 3 through the delivery shear 14 in the conveying direction. Is wound up as.

In each heat treatment furnace (7 to 11), a large number of hearth rolls 17 are provided for applying appropriate tension to the strip 3 so that the strip 3 can run continuously.
12, heat treatment furnace zone (7-11), and skin pass mill 1
Before and after 3, bridle rolls 18 are provided.

FIG. 3 shows an inlet portion of the line when the present invention is applied to a continuous strip annealing line having a strip payout device and a strip production control device.

The payoff reels 1 and 2 installed at the line entrance are equipped with a coil shell 23 and a coil shell 24, respectively, and in the strip continuous processing facility, from the coil shell 23 mounted on the payoff reel 1. Strip former 25 has been paid out. The rotation of the payoff reels 1 and 2 and the rotation of the bridle roll 18 are controlled by a strip payout controller 21.

The strip payout control device 21 has an input terminal device 22 and can input the position at which the strip is divided. This is because it is possible to automatically stop the payout of the strip former 25 by inputting the division position.

By inputting the division position, the strip shell 25
In order to automatically stop the payout of the strip, the strip payout control device 21 inputs a position to divide the strip shell 25 in advance, and the strip payout control device 21 attaches the payout amount of the strip shell 25 to the bridle roll 18. The payout amount is measured by the revolution counter 20, and when the input division position of the strip upper 25 and the measured payout amount of the strip upper 25 match, the strip payout control device 21 stops the rotation of the payoff reel 1 and the bridle roll 18. .

In this way, the strip pay-out control device 21 automatically stops the pay-out of strips at the defective position, whereby the work of the operator of the continuous strip processing equipment can be greatly reduced.

Further, the strip production control device 28 is
Production schedule for the strips inside it and welder 4
The welding completion signal from automatically recognizes which coil of material has begun to be dispensed into the strip continuous processing facility. The strip production management device 28 has an input terminal device 29 and can input that the strip is divided and passed. Based on the information that a particular strip is divided and passed, the strip production control device 28 automatically changes the strip passing order, and the strip production control device 28 automatically produces the strip. This is to correct the achievement. This can greatly reduce the work of the operator of the strip continuous processing equipment. For that purpose, inputting that a certain material coil is divided and passed through is input from the input terminal device 29 to the strip production control device 28 at least before the tips of the remaining divided material coils are welded. By this input, the strip production control device 28 can register the specific material coils for several divisions in the production schedule, so that the operator of the strip continuous processing equipment can operate the strip production control device 28. It is now possible to correctly rearrange the order of strips on the production schedule of strips inside the strip, and the strip production control device 28
Automatically recognizes which coil of material has begun to be discharged into the continuous strip processing equipment by the strip production schedule and the welding completion signal from the welding machine 4 even when the strip is divided and passed. can do.

FIG. 1 shows the operating procedure in the preferred embodiment of the present invention.

In the state of step 1 shown in the uppermost portion of FIG. 1, the coil-off shell 23 and the coil-hole 24 are mounted on the pay-off reels 1 and 2 installed at the line entrance, respectively, and are installed in the strip continuous processing facility. The strip shell 25 is paid out from the coil shell 23 mounted on the pay-off reel 1.

In the second step 2 shown in FIG. 1, in order to remove the defective portion of the strip shell 25, the payout of the strip shell 25 is temporarily stopped, and the strip shell 25 is cut by the cutting device 19, and the coil shell 25 is cut. While the payout of the strip shell 25 from 23 is interrupted, the tip of the strip shell 26 dispensed from the coil shell 24 mounted on the payoff reel 2 and the end of the cut strip shell 25 are welded by the welding machine 4. However, it is shown.

Here, when the payout of the strip shell 25 is temporarily stopped, the strip shell 2 is input from the input terminal 22.
When the division position of 5 is input, the strip payout control device 21 automatically stops the payout of the strip shell 25.

In the third step 3 shown in FIG. 1, the rest of the coil shell 23 is mounted on the payoff reel 1, and the coil B 24 mounted on the payoff reel 2 is
It shows that the strip B 26 is being dispensed into the strip continuous processing facility. The defective portion of the strip shell 25 is cut off by the cutting device 19 at the same time as the strip B 26 is being discharged into the continuous strip processing facility.

The payout of the strip upper 25 is temporarily stopped, the strip upper 25 is cut by the cutting device 19, the payout of the strip upper 25 from the coil upper 23 is interrupted, and the coil second 24 attached to the payoff reel 2 is stopped.
The time required to weld the tip of the strip B 26 discharged from the end and the end of the cut strip instep 25 with the welding machine 4 and to start passing the strip again is about 3 minutes. As shown in the figure, if the loop amount of the strip stored in the inlet looper device installed in the strip continuous processing facility is reduced while the inlet side is stopped, it is possible to reduce the strip running speed in the central and outlet sides. The operation of continuous strip processing equipment can be continued.

In step 4 shown at the bottom of FIG. 1, after the strip B 26 is completely discharged, the end of the strip B 26 and the tip of the remaining coil of the coil shell 23 are welded by the welding machine 4, and the pay-off reel is used. From the remaining coil of the coil shell 23 that is still attached to 1, the strip coil shell 2
The state where 5 is paid out is shown. Here, the strip Otsu 26 does not necessarily have to be completely paid out, and similarly to the case of the strip Otsu 25, the strip Otsu 26 is cut by the cutting device 19 and the remaining strip Otsu 26 is removed from the middle of the strip Otsu 26. The tip end may be welded by the welding machine 4 and the strip former 25 may be discharged.

[0029]

As is apparent from the above description, according to the strip payout method in the strip continuous processing equipment of the present invention, even if a defect is found in the strip during the strip payout, the continuous strip processing equipment It is possible to process the strip while removing defects of the strip in the facility without lowering the strip passing speed, and it is possible to increase the productivity without increasing the facility cost. From the above, the effect of the present invention is great.

[Brief description of drawings]

FIG. 1 is a flow chart showing changes in the state of equipment in an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a continuous annealing line for carrying out the present invention.

FIG. 3 is a block diagram showing an inlet portion of a continuous annealing line to which the present invention is applied.

[Explanation of symbols]

1, 2: Payoff reel 3: Strip 4: Welding machine 5: Cleaning device 6: Entry side looper device 7: Heating furnace 8: Soaking furnace 9: Primary cooling furnace 10: Overaging furnace 11: Secondary cooling furnace 12: Delivery side looper device 13: Skin pass mill 14: Delivery side shear 15, 16: Tension reel 17: Hearth roll 18: Bridle roll 19: Cutting device 20: Rotation meter 21: Strip dispensing control device 22: Input for strip dispensing control device Terminal 23: Coil A 24: Coil B 25: Strip A 26: Strip B 27: Welding point 28: Strip production control device 29: Input terminal for strip production control device

Claims (1)

[Claims] 1. A welding device for connecting at least two pay-off reels for unwinding a coil-shaped strip into a processing facility while rewinding the coiled strip, and a preceding strip already dispensed and a following strip to be dispensed. In a strip continuous processing facility that has a cutting device on the upstream side of the facility that can cut the strip being dispensed, the strip being dispensed from a payoff reel into the processing facility is stopped while the strip is being dispensed, and the stripping device cuts the strip into two. The part of the divided strip that has already been dispensed into the processing facility is welded at its end to the tip of another strip dispensed from another pay-off reel, and the strip is split. The remaining unpaid coiled strip is the payoff reel. A strip payout method in a strip continuous processing facility, which comprises paying out another strip from another payoff reel into the processing facility without removing it, and then paying it out again into the processing facility.