JPH03248717A - Dry dust removing device for tension leveller - Google Patents

Abstract

PURPOSE:To improve the productivity by composing the subject device of the dust removing means consisting of the endless belt of the woven cloth, etc., for removing the dust stuck on the strip to the outside of the line while wiping the dust while moving to the width direction, and the dust discharging means to discharge the dust stuck on the outside of the line. CONSTITUTION:The dust stuck on the leveller roll 2, 2' is wiped and removed by pressing the end edge of the belt of woven cloth, etc., to the upper and lower leveller rolls 2, 2' or by utilizing the rotating brush roll 14, etc. And the endless belt 101, 111, 121 of the woven cloth, etc., respectively brought in sliding contact with the upper and lower surfaces of the strips S at the exit side, at least, of the upper and lower leveller roll 2, 2' are set, and this endless belt are brought to move to the width direction of the strip S. The dust stuck on the strip S is carried while being wiped and removed with this endless belt and can be completely discharged to the outside of the line. Therefore, the need for the rust preventing means like wet dust removing is eliminated and the line velocity can be made high.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a tensioner used in processing lines such as pickling lines and plating lines to correct the shape of hot strips and strips such as plated steel strips. This relates to a leveler dry dust removal device.

<Prior art> In order to correct the shape of a hot strip or a strip such as a galvanized steel plate, upper and lower leveler rolls are placed slightly apart in the traveling direction of the strip while tension is applied to the strip in progress. A tensigon leveler is used to correct and flatten defects such as ear and belly expansion. An example of this tension leveler is shown in FIG.

In FIG. 4, the strip S is progressing in the direction of arrow X. The tension leveler A usually includes an elongation unit 1 for imparting elongation strain to the strip, and a correction unit B mainly responsible for shape correction.

When straightening the strip S with this tension leveler A,
The processing of the tension leveler A causes peeling of scale, plated metal, etc., and the peeled powder adheres to the leveler roll and causes scratches on the strip, and also remains attached to the strip surface and bites the downstream leveler roll. It also causes scratches on the strip. Therefore, dust removal measures are particularly important in the extension unit 1 disposed on the inlet side of the tension leveler A. This extension unit 1 is
In the example shown in FIG. 4, the structure includes a lower leveler roll 2, an upper leveler roll 2', a lower backup roll 3A3B, upper backup rolls 3C, 3D, and support rolls 4, 5. The strips are placed a little apart from each other, and the strips are pressed down from above and below to apply elongation strain.

In the case of the tension roller A configured in this manner, dust removal in the extension unit 1 is particularly important as described above, but no effective measures have been proposed.

Conventionally, as a dustproof measure for Tensijin levelers, for example, Japanese Patent Application Laid-Open No. 51-117157 and Japanese Patent Laid-Open No. 56-11783 have been proposed.
There is a technique disclosed in Publication No. 0. All of these methods are wet methods, but a dry method is also used in which dust is blown away using an air blower or the like.

<Problems to be Solved by the Invention> The technology disclosed in Japanese Patent Laid-Open No. 117157/1983 uses emulsion type cleaning water as water for cleaning dust, and is disclosed in Japanese Patent Laid-Open No. 117830/1983. The technology described is that an emulsion type cleaning solution is
This method was developed because it had a negative impact on the post-processing of the strip, and is a method that simply uses water as the washing water.

In the former case, as already mentioned, defects occur in the post-process, and in the latter case, only water is used, so there is a rust prevention problem for products that are shipped as is after straightening, and countermeasures are important.

In addition, dry methods such as air blowing have insufficient ability to remove dust and cannot straighten the strip at high speed to prevent scratches, and in this case, rolls are often assembled to prevent scratches. It is necessary to replace the leveler roll and install a clean leveler roll.

The present invention solves the problems in the conventional technology,
To provide a dust removal device for a tension leveler which can completely prevent indentation of a strip and straighten the strip by increasing the line speed.

<Means for Solving the Problems> That is, the present invention is a dry dust removal device for a tension leveler, which includes a dust-proofing means for wiping off dust attached to the upper and lower rollers of the tension leveler, and a dust-proofing means for wiping off dust attached to the upper and lower rollers of the tension leveler, at least on the exit side of the upper and lower rollers. a dust removal means consisting of an endless belt made of woven cloth or the like that slides on the upper and lower surfaces of the strip and moves in the width direction of the strip to wipe off dust attached to the strip and discharge it out of the line;
The problems of the conventional technology have been solved by developing a dust removal device for a tension 9-leveler, which is comprised of a dust removal means for wiping off dust adhering to the endless belt outside the line.

Further, in the present invention, the dust removal means for wiping and removing dust attached to the leveler roll uses a brush roll provided at the strip exit side edge of the endless heald that is in contact with the leveler roll, or at the strip exit side of the leveler roll. , -i advantageously the above problem can be solved.

Function> The dry type dust removal device for a tensile leveler according to the present invention wipes and removes dust attached to the leveler roll by pressing the edge of a belt of woven cloth or the like with the upper and lower leveler rolls, or by using a rotating brush roll or the like. Further, at least on the exit side of the upper and lower leveler rolls, an endless belt made of woven fabric or the like is provided in sliding contact with the upper and lower surfaces of the strip, respectively,
Since the endless belt is moved in the width direction of the strip, the dust adhering to the strip moves while being wiped away by the endless belt, and can be completely removed from the line.

Furthermore, the dust attached to the endless belt and discharged outside the line is removed from the endless heald by a dust removal means such as a brush roll, and collected by a dust collector.

Therefore, the endless belt is always fed into the line in a clean state.

In this way, in the present invention, dust is prevented from adhering to the leveler roll, and dust adhering to the strip is prevented from being conveyed as it is to the subsequent processing process, so there is no possibility of indentations occurring in the strip. There is no need to use cleaning water that affects post-processing, such as water.
Rust prevention measures are not required.

<Example> FIGS. 1 to 3 are drawings showing an example of a dust removal device for a tension leveler according to the present invention. FIG. 1 is a side view of an extension unit in the first embodiment, and FIG. FIG. 3 is an explanatory diagram of a cross section of a line.

In FIG. 1, the lower leveler roll 2 is in contact with the lower back unrolls 3A and 3B and is rotating in the direction of the arrow. Similarly, the upper leveler roll 2' is also rotating in the direction of the arrow while in contact with the upper backup rolls 3C and 3D. And the lower leveler roll 2 is directed upward,
The upper rehera roll 2' has strips S in the downward direction.
is rolled down, and the shape of the strip S is corrected while applying an elongation strain to the strip S.

In this case, as mentioned above, the peeling powder of scale and plated metal adheres to the reherer roll 2.2' and is sent to the next straightening unit while remaining attached to the strip S, and in any case, it is pushed onto the strip S. Defects occur.

In the present invention, a dust removing means 1O is provided on the exit side of the lower reherer roll 2. The dust removing means 10 is mainly composed of an endless belt 101 made of woven cloth, felt, etc., and a guide plate 102 for pressing the endless belt 101 against the lower surface of the strip S and guiding and holding the belt.

In the example shown in FIG. 1, the lower end edge 103 of the endless belt 101 on the strip S entry side is brought into contact with the leveler roll 2 as a means 15 for removing dust adhering to the leveler roll 2. Furthermore, if possible, the lower surface of the endless belt 101 should also come into sliding contact with the backup roll 3B.

On the other hand, a dust removing means 11 is similarly provided on the exit side of the upper leveler roll 2'. This dust removal means 11 is also mainly composed of an endless belt 111 and a guide plate 112, and the strip S entry side edge 113 of the endless heald 111 is brought into contact with the leveler roll 2' to remove dust attached to the leveler roll 2'. This is a dust removal means 16.

Furthermore, it is also effective to make the strip exit side upper end edge 114 of the endless heald 111 slide into contact with the bank unroll 3D as shown in the figure.

In this way, the dust removal means 10, 1 on the upper and lower surfaces of the strip S
1, and each endless belt 101.
Since the strip entry side edge of 111 is used as a dust removal means 15.16 for dust adhering to the leveler roll 2.2', the dust adhering to the strip S is wiped off by the endless belt 101, 111 and removed from the line. As the dust moves and is discharged, the dust adhering to the leveler roll 2.2' is also wiped off by the strip entrance edge of the endless bell (101, 111), so it remains attached to the strip S and the leveler roll 2.2'. Never.

Further, in this embodiment, a dust removal means 12 is also provided on the entrance side of the upper reherer roll. This dust removing means 12 also has an endless belt 12 similar to the dust removing means 10.11 described above.
1. Although mainly constituted by a guide plate 122, this dust removing means 12 only removes dust peeled off by the lower leveler roll 2 and attached to the upper surface of the strip S, and is not necessarily necessary.

Note that the guide plates 102, 112, and 122 all slide into endless belt 101 by sliding contact with the strip S.
．． In order to receive the thrust in the traveling direction of the strip S applied to the strips 111 and 121, it is necessary to provide a collar on each outlet side.

Another embodiment is shown in FIG. 2. In this example, the entrance edge 113 of the endless belt 111 of the dust removing means 11 on the upper surface of the strip S shown in FIG. 1 is used to remove dust attached to the upper leveler roll 2'. The two are provided separately without being used as means 16'.

That is, as a dust removal means 16' for the upper leveler roll 2', the brush roll 14 is rotationally driven by a drive device not shown, and is pressed by the upper leveler roll 2' to wipe away dust attached to the upper leveler roll 2'. A dust removing means 11' for removing only dust on the upper surface of the strip S is provided.

This dust removal means 11' is also an endless bell) 111
It mainly consists of a 'guide plate 112', and may be similar to each of the dust removal means 10, 11, and 12 described above.

Further, the dust removing means 10 on the lower surface of the strip S, the dust removing means 12 provided on the inlet side of the upper leveler roll 2', and the dust removing means 15 on the lower work roll 2 are as explained in the embodiment shown in FIG. Therefore, the explanation will be omitted.

Next, the endless belt and the dust removal means 17 outside the line will be explained with reference to FIG. FIG. 3 shows a cross section of the line, in particular the dust removal means 10, 11, installed above and below the strip S. This is only shown.

Here, the endless belt 101.111 is made of woven cloth or felt to a predetermined thickness and width, and the head pulley 20.20' is rotationally driven by a drive device not shown.
and a rotatable end pulley 21.21', and is guided by a guide pulley 22.22'. The guide Fi, 102.112 is also supported outside the line by a support 105.115, the support 105,
Although 115 is not shown, each endless held 10
1.111 The endless belt 101.111 is pressed against the strip S with an appropriate force using a spring or the like provided on the outside in the width direction.

Next, a description will be given of the dust removal means I7 for removing dust attached to the endless bell number 01.111 and discharged outside the line.
Each brush roll 24.
24' is installed, and the brush roll 2424' is rotationally driven by a drive device not shown, and is pressed against the endless belt 101.111.
Wipe off the dust attached to 111. The dust removed from the endless bell 01.111 by the brush roll 24.24' of the dust removal means 17 is then removed from the hood 25.
, is sucked in by the exhaust air @21 through the duct 26, and then collected by the dust collector 28.

Incidentally, if necessary, a brush roll is also provided on the back side of the endless belt 101, 111, and dust is collected using a hood. Further, the dust removal means 12 is also similar to the above description.

In the above embodiment, an example was described in which the lower leveler roll 2 was installed on the inlet side of the upper leveler roll 2', but if the upper leveler roll 2' was installed on the inlet side of the lower leveler roll 2, as described above, is upside down.

In addition, each brush roll 14, 24, 24' does not necessarily have to be a brush roll, and may be a simple brush or one that presses the edge of an old belt chopstick. Of course, by using them together, the dust removal effect can be further improved.

By implementing the present invention, the adhesion of scale and metal powder to the strip strip and leveler roll that occurred when the tension leveler was operated using the conventional dry dust removal method has completely disappeared, resulting in the occurrence of scratches on the strip. Moreover, the recombination cycle of the leveler roll is doubled from about 7 times of 20,000 tons to about 7 times of about 40,000 tons, and the line speed of the conventional dry dust removal type tension leveler is no more than 180 m/sin. We were able to improve the speed from what we had before to a maximum of 500m/win.

<Effects of the Invention> As described above, according to the present invention, a dry type mechanical dust removal method is adopted as a dust removal device for a tension leveler in a strip processing line, so that anti-corrosion measures as in wet dust removal can be achieved. In addition, the frequency of leveler roll replacement in the conventional dry dust removal method using only air blow etc. can be halved, and the line speed can be made extremely high, so the process can be omitted and
The productivity improvement chain has a huge effect.

[Brief explanation of drawings]

1 to 3 are explanatory diagrams of an embodiment of a dust removal device for a tension leveler according to the present invention, FIG. 1 is a side view of an extension unit in the first embodiment, and FIG. 2 is a side view of another embodiment. Figure 3 is an explanatory diagram of the cross section of the line, and Figure 4 is an explanatory diagram of the cross section of the line.
The figure is an explanatory diagram of an example of a tension leveler. ■...Tension repeller extension unit, 212'.
...Leveler roll, 3.3'...Huck up roll, 10, 11.12...Dust removal means, 101, 111
．． 121...Endless Held, 102, 112.
122...Guide plate, 14, 24.24'...
Brush roll, 15, 16.16'...Dust removal means, 17...Dust removal means.

Claims (3)

[Claims] (1) A dry dust removal device for a tension leveler, which includes a dust removal means for wiping off dust attached to the upper and lower leveler rolls of the tension leveler, and a dust removal means that slides into contact with the upper and lower surfaces of the strip at least on the exit side of the upper and lower leveler rolls, and a dust removal means consisting of an endless belt made of woven cloth or the like that moves in the width direction to wipe off the dust attached to the strip and discharge it outside the line; and a dust removal means for wiping off the dust attached to the endless belt outside the line. A tension leveler dry type dust removal device comprising a dust removal means. (2) The tension leveler according to claim 1, characterized in that the dust removal means for wiping off dust adhering to the leveler roll is the strip entry side edge of the endless belt that is in contact with the leveler roll. Dry dust removal equipment. (3) The dry type dust removing device for a tension leveler as set forth in claim 1, wherein the dust removing means for wiping off dust adhering to the leveler roll is a brush roll provided on the strip exit side of the leveler roll.