JPS5819362B2 - Renzokushikireikan Atsuensouchi - Google Patents

Description

[Detailed description of the invention] The present invention relates to a continuous cold rolling apparatus.

Conventional tandem rolling mills have adopted a batch method in which each coil is rolled intermittently.

With this method, unless computer control is used during sheet threading and acceleration/deceleration, off-gauge will inevitably occur.
This had the disadvantage of decreasing efficiency.

Therefore, in order to eliminate the above drawbacks, tandem input side two,
A continuous rolling method that is equipped with a strip storage device such as an accumulator or a looper and can constantly roll at high speed has been proposed and is being put into practical use.

As the continuous rolling method mentioned above, three methods have been proposed to date.

The first method is proposed in Japanese Patent Publication No. 41-11606, and this method includes an unwinding device, a shearing machine, a welding machine, a looping bit type accumulator,
The width adjusting devices are sequentially arranged from the entrance side of the rolling mill toward the first stand.

The second method is proposed in Japanese Patent Publication No. 47-11468, in which a coil unwinding device is installed near the entrance of the rolling mill in a direction opposite to the rolling direction of the rolling mill.
A shearing machine, a welding machine, and a tension lube type accumulator are installed in sequence, and a centering device is also installed between the exit side of the accumulator and the input side of the rolling mill.

The third method, proposed in Japanese Patent Publication No. 47-41667, is to install at least two or more unwinding machines, cutting machines, and welding machines on the entrance side of the rolling mill, and a looper on the top of the crane. It is.

All of the three methods mentioned above enable continuous rolling by devising the arrangement and position of each piece of equipment on the entry side of the rolling mill.

However, the three methods described above are all based on the provision of a pretreatment device for continuous cold rolling on the inlet side of the rolling mill.

For this reason, when operating equipment while looking directly at it, due to the layout of the equipment,
The entry side operation, central operation and exit side operation and the dispersion of the operation surfaces have inevitable drawbacks.

Considering the above disadvantages, if the coils are continuous, there is no need to gather preparation equipment at the entrance of the rolling mill as in conventional batch rolling mills, but rather there is an advantage of centralized control. Considering this, it is preferable to bring the preparation device to the exit side of the rolling mill.

Furthermore, the method of bringing the preparation device to the exit side, passing over the housing of the rolling mill from the exit side looper, and feeding the material into the input side of the rolling mill requires width adjustment because the distance between the exit side of the looper and the input side of the rolling mill is long. Therefore, there is no need to have a free loop, and the width can be easily adjusted.

However, even if a pretreatment device for continuous cold rolling is brought to the exit side of the rolling mill, it is not necessary to monitor the operations on the entrance side and the exit side of the rolling mill three-dimensionally and vertically. Either one cannot be monitored sufficiently, and the observer must constantly move his head up and down to monitor, resulting in extreme fatigue.

In consideration of the above points, the present invention arranges a coil unwinding device and a strip preparation device on the same floor as a tension reel on the outlet side of a rolling mill, and a coil unwinding device near the outlet side. Provided is a continuous cold rolling device in which the strip that has exited and passed through the looper is passed over the housing of the rolling mill, enters a first stand of the rolling mill, and is received at the exit side, thereby enabling continuous rolling. The purpose is to.

To explain the structure of the present invention in detail based on the embodiment shown in the drawings, the tension reel 17 on the exit side of the tandem rolling mill
, 17', etc., a coil unwinding device 1 formed of two payoff reels is installed, and a guide plate 3 is installed downstream of both reels 1atlb to reliably guide the tip of the strip 2.
, 3' and a pinch roll 4 are installed downstream thereof, and the center portions of the rear end of the leading strip 2 and the tip of the trailing strip 2 are located at the center of the line during welding, and A presser guide 5 in the width direction for making parallel the end surfaces where the end and the tip of the trailing strip abut, and a shearer 6 for shearing the edge of the strip 2 are installed.

A welding machine 7 is installed downstream of the shearing machine 6 to weld and connect the rear end of the leading strip 2 and the front end of the trailing strip 2.

A tension type looper 8 is provided downstream of this welding machine 7 to horizontally loop the strip 2, so that even at high speeds, the leading strip can be continuously supplied during the welding time between the leading strip and the trailing strip. I have to.

A first priddle roll 9 is provided on the exit side of the looper 8, a dancer roll 9' is provided between the first priddle roll 9 and the housing of the rolling mill, and a plurality of dancer rolls 9' are provided on the housing of the rolling mill. Guide roll 10,...
A steering roll is provided above the entry side of the first stand 111 of the tandem rolling mill, and a second priddle roll 13 is provided below the steering roll 12 at a location on the entry side of the first stand 111 to roll the strip 2. is supplied to the first stand 111 through the upper part of the housing.

The first priddle roll 9 and the steering roll 12
A width detector 14 is provided between the width detector 14 and the steering roll 12 so that the width detector 14 and the steering roll 12 can be moved, and the steering roll 12 is moved in the width direction based on the signal detected by the width detector 14 to adjust the width. We make it easy to do.

Further, a high-speed shearing machine 15 for shearing the strip 2 to a predetermined length is provided on the exit side of the last stand 116 of the parallel stands, and a guide plate 16, 16' for guiding the strip downstream thereof is provided.
and tension reels 17 and 17' are installed.

Incidentally, the tension reels 17, 17' are installed near the coil rewinding device 1 on the same floor surface.

Then, the tension reels 17, 17' and the rewinding device 1
A central operation room 18 is provided near the

The embodiment of the present invention is constructed as described above, and the strip 2 rewound by one reel of the reel 1 a t 1 b of the coil unwinding device 1 is guided by guide plates 3 and 3' and placed in a horizontal looper. Form a loop with 8 and get the first bride! Pass through the roller roll 9, dancer roll 9', and guide roll 10.
．． . . . passes over the housing of the rolling mill, changes direction by the steering roll 12 and the second priddle roll 13, and is sent to the first stand 11, and each stand 11 □ □ parallel to this is sent to the first stand 11. It is rolled by each roll, and wound up on one tension reel 17.

Then, the rear end of the strip 2 is cut by a shearing machine 6.
Furthermore, the tip of the next strip 2 is also cut by the shears 6,
The cut surfaces of the two are brought together and welded using a welding machine 7, and the bead at the connecting portion is removed using a trimmer (not shown) to enable continuous rolling.

The rolled strip is cut to the desired length by shears 15.

In addition, in the above-mentioned embodiment, the width adjustment device comprising the width detector 14 and the steering roll 12 is provided between the first prydle roll 9 and the second prydle roll 13.
With the side guide method that incorporates hard rolls that move in the width direction based on the signals detected by conventional width detection devices, there is a risk that the rolls may damage the edges of the board when sudden changes occur, and In the method of operating the widthwise operating roll, only the roll is in contact with the bottom surface of the coil at a very shallow contact angle, so the width correction effect is small, so free rollers are installed before and after the widthwise operating roll. However, there were drawbacks such as the need to straighten the width of the second stage with a side guide installed on the exit side, but by using a long spar 7 from the first pre-roll roll 9 to the input side of the rolling mill, a free reel was introduced. This is so that the width can be easily adjusted without providing a par.

Since the present invention has the structure and operation as in the above embodiment,
If a coil unwinding device is installed on the same floor near the station reel on the exit side, a central control room can be installed nearby, allowing all workers to be gathered in the same place and centrally controlled. A worker can monitor the situation by just slightly moving his or her head horizontally, which can minimize worker fatigue.

In addition, since the strip is supplied by being installed on the outlet side of the rolling mill and passing over the housing of the rolling mill, the spar 7 between the looper outlet side and the rolling mill inlet side can be made long, making it easy to adjust the width. The width can be easily adjusted without the need for a free loop.

[Brief explanation of drawings]

The figure is a schematic diagram showing one embodiment of a continuous cold rolling apparatus according to the present invention. In the figure, 1 is a coil unwinding device, 6 is a shearing machine, 7 is a welding machine, 8 is a horizontal looper, 11□ is the first stand, 17
, 17' are tension reels.

Claims (1)

[Claims] 1. A strip unwinding device is installed on the floor near the strip receiving device on the exit side of the rolling mill, and a shearing machine, a welding machine, and a horizontal looper are arranged in sequence following this unwinding device, and the strip is passed through the looper. After that, the strip is passed over the housing of the rolling mill to be supplied to the entrance side of the first stand of the rolling mill, and the strip is received by the receiving device. Device.