JPH05154533A - Method for passing strip through bride roll - Google Patents

Abstract

PURPOSE:To use a simple and small sized device and to drastsically shorten processing time of a strip with easy work. CONSTITUTION:After a leading rope 25 and a following rope 25 are fitted to the tip part and the edge part of the strip steel S through a connecting metal tools 22, 24 respectively, the strip steel is passed through a winch 20 at the outlet side of bridle roll 5. Thereafter, the leading rope is returned back to the inlet side with an inlet side winch 21 through the following rope and this leading rope is stored in a rope receiver 26 arranged near a bearing 14 of the bridle roll and waited.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention continuously processes strip steel,
For example, the present invention relates to a method for passing a bridle roll installed to apply tension to a steel strip in a temper rolling line or a pickling line.

[0002]

2. Description of the Related Art A bridle roll is usually installed in a continuous strip steel processing line to apply a predetermined tension to the strip steel being processed. FIG. 5 shows an example of the temper rolling line in which the bridle roll is installed in this way. In the figure, the strip steel S is rewound from the coil by the payoff reel 1 and the shape is corrected by the payoff leveler 2. Then, after the tail end of the leading strip and the tip of the trailing strip are cut by the entry side shear 3, the leading and trailing strips are connected by the welder 4. Numerals 5 and 8 are bridle rolls on the inlet side and the outlet side, and the steel strip is tempered while a predetermined tension is applied between them.
Then, temper rolling is performed, the shape is further corrected by the tension leveler 7 to form a flat steel strip, and then the connecting portion is cut and separated again by the outlet shear 9. 10 is a tension reel that winds the strip steel around the coil on the output side.

In such a continuous processing line, when the steel strip is thick, the bridle roll and the tension leveler may be bypassed without using them, and the shape may be corrected only by the skin pass mill. Therefore, when the bridle roll is used again after being bypassed, a striping operation is required each time, and the troublesomeness is a problem.

The troublesomeness of the strip passing can be applied not only to the bridle roll but also to a heat treatment furnace for continuously treating the strip steel. For example, Japanese Patent Laid-Open No. 63-310921 discloses a strip passing device for a continuous heat treatment furnace. Has been done. This equipment installs winches on the inlet side and outlet side of the furnace, hangs the wire rope between both winches, and normally makes the wire rope stand by on the furnace wall side.
After moving the wire sheave on the inlet side and the outlet side that guides the wire rope to the center of the furnace with a moving device,
The hook attached to the wire rope is engaged with the pulling metal fitting at the front end of the steel strip, and the steel strip is passed by the winch on the exit side of the furnace.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention JP-A-63-310921
The strip passing apparatus disclosed in Japanese Patent Publication has a device for moving the wire sheave in the furnace width direction, and thus the strip passing operation is very simple and effective. Since it is flat, it can be used, and it is difficult to adopt it on a bent pass line like a bridle roll.

[0006] For this reason or placed along the wire rope to the bridle roll absolutely operator intervention, work to remove from the bridle rolls to reverse it is left. In addition, since this equipment uses a single wire rope, it is necessary to make the winch drum on the input side and the winch drum on the output side have almost the same diameter so that bending resistance of the wire rope can be obtained. Moreover, the total length of the wire rope becomes long, which is a waste.

The present invention solves the above-mentioned problems of the prior art, allows the operator to intervene as much as possible even if the worker intervenes in the bridle roll passing plate, and the entry winch is small and the length of the wire rope is required. It is an object of the present invention to provide a bridle roll passing method that can be minimized.

[0008]

The present invention is a method for passing bridle rolls in a strip steel continuous processing line, in which a leading rope is attached to a central portion of the leading end of a strip steel through a connecting metal fitting. A follower rope is attached to one edge of the steel via a connecting fitting, and the leading rope is wound by a winch installed on the exit side of the bridle roll to pass the strip steel, and then both connecting fittings are removed from the strip steel and leading. Connect the rope and the follow rope, then wind the follow rope around the winch installed on the entrance side of the bridle roll and at the same time pull the follow rope back to the entrance side of the bridle roll, and then install the leading rope near each roll bearing of the bridle roll. The problem of the above-mentioned conventional technology was solved by depositing it in a receiver and making it stand by. Than it is.

[0009]

[Operation] When passing the strip, a leading rope is attached to the center of the end of the strip, and a follow rope is attached to one edge of the strip to pass the strip. Then, during the waiting time other than through the strip, the leading rope is returned to the entrance side of the bridle roll and stored in the rope receiver provided near each roll bearing of the bridle roll.

Since the follower rope is attached to one side edge of the steel strip in this way, when the leading rope is returned to the entrance side of the bridle roll and passed through the rope receiver after passing through the strip, it is close to the operator's hand, It becomes easier to support the rope bridge. Also, since the leading rope and the follow rope are different, the follow rope can be thin enough to pull the leading rope.Therefore, the winch drum on the entrance side can also be small in diameter, and the winch itself can be small, for example, the manual method. Is enough. Furthermore, the leading rope can be minimized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a bridle roll passing method according to the present invention will be described with reference to FIGS. FIG. 1 is a side view of the entrance-side or exit-side bridle rolls 5, 8 and FIG. 2 is a plan view thereof. Bridle roll is # 1 in this example
The rolls # 1 to # 4 each include a snubber roll 11. As shown in FIG. 2, these rolls # 1 to # 4 are rotatably supported by a bearing 14 (gear case side is not shown) provided in a gear case 12 that houses a distribution gear and a frame 13, and a drive shaft 15 is provided. Driven by the driving force transmitted from the motor, it is rotationally driven via the distribution gear.

The setup of the strip of the steel strip S will now be described.
Remove the leading rope 23 from the rope receiver 26, which will be described later, and wind it around the center of the bridle rolls # 1 to # 4 as shown in the figure. In this case, the leading rope 23 can be easily pulled close to the center of the roll by pulling it out of the drum of the exit winch 20 to loosen it and pushing it with a stick having a bifurcated tip.

Then, the connecting fitting 22 is connected to the tip of the leading rope 23, and the connecting fitting 22 is attached to the central portion of the end of the steel strip S. For example, as shown in FIG. 3, it is convenient to use a one-touch type connecting fitting 22 such as a fan-shaped cam 31 supported by a pin 32 at the tip of a fork 30 so as to sandwich the strip steel S. In addition, 33 is a hook and this is a leading rope
23 Disengage from the ring 23 'at the tip.

On the other hand, the follower rope 25 is also provided with a connection fitting 24 similar to that shown in FIG. 3, which is attached to the end thereof and attached to one edge of the steel strip S. After that, the output winch 20 is rotationally driven to wind the leading rope 23 and the strip steel S is passed through, and at the same time, the follow rope 25 is unwound by idling of the entrance winch 21. Then, after the tip of the steel strip S has passed the # 4 roll of the bridle roll, this is fixed.

Next, the connecting fittings 22 and 24 are removed from the steel strip and the leading rope 23 and the follow rope 25, both ropes are directly connected to each other, and this time the follow rope 25 is wound by the entry winch 21 and the leading rope 23. Pull back to the # 1 roll entry side of the bridle roll. The exit winch 20 may be a torque motor and may be driven at a variable speed, and the entrance winch 21 may be a manual system as described above.

After that, the leading rope 23 is removed from the follower rope 25, and the rope receiver 26 is put in a standby state.
In this case, since the follow rope 25 was attached to the edge of the steel strip, it was wound near the # 1 to # 4 roll ends of the bridle roll, and the leading rope 23 was also pulled close to the roll ends. The work of depositing on the rope bridge 26 can be performed at hand. Further, the rope receiver 26 is located near the # 1 to # 4 roll bearings 14 of the bridle roll, and the approximate position is shown in FIG. 1 and the state where it is attached to the frame 13 is shown in FIG. 4, but this is not particular about this shape. For example, a rope guide having a groove-shaped cross section that covers a half circumference of the bearing may be used. The rope receiver 26 is preferably provided on the working side of the line together with the entry winch 21 as shown in FIG.

The bridle roll passing method according to the present invention was carried out in a temper rolling line as shown in FIG. The strips processed by this line are 1.2 to 8.0 mm thick and 700 to 22 wide.
The bridle roll and the tension leveler are bypassed up to a thickness of 6.5 mm to 8.0 mm, and the bridle roll threading work occurs 8 times a month on average, and the time required for each bridle roll is about 3 hours. Simultaneous work on the outgoing side was required,
By carrying out the present invention, the time could be shortened to about 30 minutes.
This corresponds to a processing capacity improvement of 2400 T / month.

[0018]

When the bridle roll threading method according to the present invention is carried out, it is possible to minimize the intervention of the operator, which was difficult to mechanize in the past, and to perform the work safely and in a short time. It was possible to contribute to the improvement of productivity. Furthermore, since the leading rope is the shortest and the follower rope can be thin, the entry winch can be small and manual, and the whole device is simple and inexpensive to manufacture.

[Brief description of drawings]

FIG. 1 is an explanatory view of a method for passing a bridle roll according to the present invention, and is a drawing showing a side surface of the bridle roll.

FIG. 2 is an explanatory view of a bridle roll passing method according to the present invention, and is a plan view of the bridle roll.

FIG. 3 is a side view showing an example of a connecting fitting used in the present invention.

FIG. 4 is a drawing showing an example of a rope receiver used in the present invention.

FIG. 5 is a side view for explaining equipment arrangement of a temper rolling line in an example of a processing line using a bridle roll.

[Explanation of symbols]

 1 Payoff reel 2 Payoff leveler 3 Entry side shear 4 Welder 5 Entry side bridle roll 6 Temper rolling mill 7 Tension leveler 8 Exit side bridle roll 9 Exit side shear 10 Tension reel 11 Snubber roll 12 Gear case 13 Frame 14 Bearing 15 Drive shaft 20 Output Side winch 21 Input side winch 22 Connection fitting 23 Leading rope 24 Connection fitting 25 Follow rope 26 Rope holder

Claims (1)

[Claims] 1. A method for passing bridle rolls in a strip steel continuous processing line, wherein a leading rope is attached to a central portion of the leading end of the strip steel through a connecting metal fitting, and a connecting metal fitting is attached to one edge of the steel strip. Attach a follower rope through the lead rope and wind the steel strip through the winch installed on the exit side of the bridle roll to pass the steel strip, and then remove both connection fittings from the steel strip to connect the leading rope and the follower rope, Next, wind the follower rope around the winch installed on the entrance side of the bridle roll and at the same time pull back the leading rope to the entrance side of the bridle roll. The characteristic method of passing bridle rolls.