JPH084835B2 - Apparatus and method for removing foreign matter on strip surface - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip foreign matter removing apparatus and method suitable for removing foreign matters on the surface of a strip in the process of producing a strip to produce a strip excellent in surface quality.

[0002]

2. Description of the Related Art Generally, in order to produce a strip having a good surface quality, it is necessary to completely remove foreign substances carried by the strip and then pass the strip through an apparatus for producing a strip such as a rolled material. As a conventional method for removing foreign matter carried in a strip, for example, a strip foreign matter removing device described in JP-A-62-144802 is known.
In this device, a strip-shaped brush is brought into contact with the strip,
The foreign matter of the strip is floated and discharged by vacuum from an exhaust port provided in the brush housing.

[0003]

The conventional strip foreign matter removing device has the following problems. (1) Since the entire housing in which the brush is installed is vacuum-sucked, a large-capacity vacuum suction capability is required and suction efficiency is low. (2) Since uneven wear occurs at the strip width end contact portion of the roll brush, it is necessary to frequently replace the roll brush. Moreover, since the brush is roll-shaped, it is large in size and requires a lot of labor and time for replacement. An object of the present invention is to solve the above-mentioned problems and to provide an apparatus and method for removing foreign matter from the surface of a strip suitable for manufacturing a strip having excellent surface quality.

[0004]

The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a diagram in which a suction port is brought close to a strip to remove foreign matter, and FIG. 2 is a diagram in which the suction port is separated from the strip and a guide plate is inserted when passing the strip. 3 is a BB sectional view of FIG. 1, FIG. 4 is a CC sectional view of FIG. 3, and FIG. 5 is a partially enlarged view of FIG. This device is a strip passage shown in FIGS. 1 and 2 (hereinafter referred to as a pass line A).
Since the configuration is vertically symmetrical with respect to -A, only the upper side will be described.

In FIG. 1, a suction port raising / lowering cylinder 3 is fixed to the housing, and a fixed suction port 4 is supported at the tip of the rod of the suction port raising / lowering cylinder 3 so as to be able to move up and down. The fixed suction port 4 is provided with a guide groove 7 in the strip plate width direction W shown in FIGS. 4 and 5, and the movable suction port 5 is supported in the guide groove 7 via a roller 16. The moving suction port moving motor 6 shown in FIG. 1 is fixed to the upper surface of the fixed suction port 4, and the pinion gear 17 fixed to the motor 6 is fixed to the moving suction port 5 shown in FIG. It is meshed with the rack shaft 9, and the moving suction port 5 moves in the strip width direction W by driving the motor 6. A suction duct 10 made of a flexible hose is fixed to the fixed suction port 4 and the movable suction port 5, and the strip S
Foreign matter on the surface can be sucked and discharged.

Brackets 19 are fixedly provided on the entire outer peripheral surface of the fixed suction port 4 and the inner surface of the movable suction port 5 shown in FIGS. 4 and 5 (only the strip plate width direction portion is shown in the drawings). In the bracket 19, an elastic support member 18 is provided.
Has been inserted. A rack shaft 21 is fixedly mounted on the support member 18, and the rack shaft 21 is meshed with a pinion gear 22 of a support member lifting motor 11 (FIG. 1) fixedly mounted on the moving suction port 5 and driven by the motor 11. , Support member 1
8, the elastic body 8 can be moved up and down.

One end of the elastic support member 18 is open, the elastic body 8 made of a brush is inserted from the open end, and the upper portion 8A of the elastic body 8 is inserted and supported in the support groove 18A. It is slidable along the support groove 18A.
In the embodiment, a brush is shown as the elastic body 8, but in addition to this,
Felt, woven cloth, sponge, rubber, vinyl and the like can be used.

A guide rail 12 is fixed to the housing 1 shown in FIGS. 2 and 3, and a guide plate 13 having a passage for the strip S is inserted into the guide rail 12 via a roller 14 so that the guide plate 13 is A guide plate moving cylinder 15 is connected to one end.

[0009]

Next, the operation will be described. The operation for removing foreign matter adhering to the surface of the strip S is as follows in the example above the pass line AA. After the suction port elevating cylinder 3 is contracted to separate the fixed suction port 5 from the pass line AA, the strip 7 is passed. Next, by extending the suction port elevating cylinder 3,
The fixed suction port 4 shown in FIG. 3 moves down, and the moving suction port 5 supported by the fixed suction port 4 also moves down. As a result, the elastic body 8 supported by the tips of the fixed suction port 4 and the moving suction port 5 contacts the strip S. By bringing the elastic body 8 into contact with the strip S, the effect of floating the foreign matter by the elastic body (brush) 8 and the sealing effect of the gap between the strip S and the fixed suction port 4 and the moving suction port 5 are improved, and the foreign matter suction / removal efficiency is improved. It is possible to improve.

In this state, the strip S is sent in the direction toward the paper surface by a drive system (not shown), so that the foreign matter adhering to the strip S is continuously removed by the elastic body 8 and the suction force. . Further, the removed foreign matter is discharged through the suction duct 10 by a dust collecting fan (not shown). Further, also for the example below the pass line AA, the same operation as described above is performed.

The movement operation of the moving suction port 5 in the strip plate width direction W when the strip plate width is changed is as follows. The pinion gear 17 shown in FIG. 3 is rotated by the moving suction port moving motor 6, and the moving suction port 5 attached to the end of the rack shaft 9 is moved in the strip width direction W of the strip S. At this time, since the movable suction port 5 moves without a gap with respect to the fixed suction port 4, the sealing property does not deteriorate.
Further, by setting the movable suction port 5 slightly inside the width end of the strip, it is possible to prevent uneven wear due to contact of the elastic body 8 with the width end of the strip.

The operations for adjusting the contact length of the elastic body 8 on the strip surface when the elastic body 8 is worn and for exchanging the elastic body are as follows. 5, the pinion gear 2 is driven by the elastic body lifting motor 11 shown in FIG.
2, the support member 18 supporting the elastic body 8 moves up and down. The elastic body 8 is supported in two rows at the tips of the fixed suction port 4 and the movable suction port 5, respectively, and each independently moves up and down, so that the contact length of the tip portion of the elastic body 8 to the strip S is increased. Can be adjusted. Normally, as shown in FIG. 4, only one row is in contact with the strip S, and the other one row is in contact with the strip S.
It is waiting at a position further away. When it becomes necessary to replace the elastic body 8 with a new one, the elastic body 8 that has been waiting can be replaced by bringing the elastic body 8 into contact with the strip S by the above operation without stopping the line. Further, the elastic body 8 can be easily removed and inserted from the support member 18 by pulling it out in FIG.

When the strip 7 is passed through the pass line AA, the strip may collide with the elastic body 8 or may hit the suction ports 4 and 5. In order to prevent this, as shown in FIG. 2, the suction port elevating cylinder 3 is contracted to separate the suction ports 4 and 5 from the pass line A-A, and then the guide plate moving cylinder 15 is extended. By moving the guide plate 13 along the guide rail 12 into the pass line AA, the strip S can be passed through the guide plate 13 in this state to solve the above problem.

In this embodiment, the rack and pinion mechanism is shown as the moving mechanism of the moving suction port 5 and the elastic support member 18, but instead of the rack and pinion mechanism,
A known mechanism such as a cylinder mechanism or a worm screw mechanism can be used.

The strip surface foreign matter removing method according to the present invention comprises a single or a plurality of suction ports movable in the width direction of the strip plate, an elastic body detachably attached to the tip of the suction port, It is characterized in that it comprises a suction port and a suction duct attached so that it can be ventilated, and the movable single or multiple suction ports are moved so as to cover an area inside the strip plate width end.

FIGS. 6A and 6B show an example of a plurality of suction ports 23 to 25 which are movable in the strip width direction W of the strip.
By moving the suction ports 23 to 25 in the plate width direction W, the suction ports 23 to 25 are moved so as to cover the area inside both ends E of the strip. FIG. 6A and FIG.
The difference from (B) is that the suction ports 23, 2 in FIG.
3 moves independently, but in FIG. 6B, when the suction port 25 is moved, the suction port 24 moves. In FIG. 6C, the single suction port 26 is swung in a plane parallel to the plane of the strip S, so that the suction port 26 is moved so as to cover the area inside the both ends E of the strip.

As shown in FIGS. 1 and 4, an elastic member 8 is detachably attached to the suction ports 23 to 26 shown in FIGS. 6 (A), 6 (B) and 6 (C), Further, a suction duct 10 is attached so as to allow ventilation. FIG. 6 (A),
As shown in (B) and (C), the elastic body comes into contact with both ends of the strip by moving the suction ports 23 to 26 so as to cover the area inside the both ends E of the strip, thereby causing uneven wear of the elastic body. Also, it is possible to prevent the deterioration of the sealing property.

[0018]

Since the suction port for sucking the foreign matter on the strip surface is provided so as to be movable in the strip width direction,
The suction port can be moved according to the strip plate width and can be located inside the strip width end. For this reason, the suction volume can be minimized and the foreign matter removal efficiency is good. Further, since the elastic body provided at the tip of the suction port can avoid contact with the strip width end, avoiding deterioration of foreign matter removal efficiency due to uneven wear of the elastic body caused by contact of the elastic body with the strip width end. The life of the elastic body can be extended.

Further, two rows of elastic bodies are detachably provided at the tip of each suction port, so that one row of the elastic bodies can be used as a spare and foreign matter can be added to another row of elastic bodies that are in contact with the strip. When replacement is necessary, for example, when the dirt enters and stains occur, the soiled brush can be replaced after the spare elastic body is brought into contact with the strip. Therefore, it is not necessary to pause the line when replacing the brush. Further, by providing the elastic body so as to be able to move up and down, the contact length between the elastic body and the strip when the elastic body is worn can be adjusted in the same manner as described above, so that it is not necessary to suspend the line for adjusting the brush position. Further, when the strip is passed through the pass line, by inserting the guide plate into the pass line, it is possible to prevent the strip from hitting the suction port or the like. According to the present invention, as described above, the foreign matter on the strip surface can be efficiently removed, and the strip having excellent surface quality can be efficiently manufactured.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, showing a state where foreign matter on the strip surface is removed.

FIG. 2 is a front view showing an embodiment of the present invention, showing a state in which a guide plate is inserted when passing a strip.

FIG. 3 is a plan view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line CC of FIG.

FIG. 5 is a partially enlarged view of FIG.

FIG. 6 is a diagram illustrating a method of the present invention.

[Explanation of symbols]

 S strip 1 housing 2 guide beam 3 suction port lifting cylinder 4 fixed suction port 5 moving suction port 6 moving suction port motor 7 guide groove 8 elastic body 9 rack shaft 10 suction duct 11 elastic body lifting motor 12 guide rail 13 guide plate 14 Guide Rolls 15 Guide Plate Cylinders 16 Rollers 17 Pinion Gears 18 Elastic Support Members 18A Elastic Support Grooves 19 Brackets 20 Support Member Lifting Cylinders 21 Rack Shafts 22 Pinion Gears 23-26 Suction Ports

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Kazuo Ikeda Kazuo Ikeda 1-1-1 Edamitsu, Hachimanto-ku, Kitakyushu, Kitakyushu, Fukuoka Inside Nippon Steel Co., Ltd. (72) Shunji Shoda Hachimanhigashi, Kitakyushu, Kitakyushu, Fukuoka 1-1-1 Kuedamitsu Shin Nippon Steel Co., Ltd. (72) Inventor Kenichi Koyama No. 3-chome, 1-chome, Saiwaicho, Hitachi, Ibaraki Prefecture Hitachi Ltd. Hitachi factory (72) Inventor Norikura Takashi Ichi, Hitachi City, Sachimachi, 3-chome, Hitachi Co., Ltd.Hitachi Plant, Hitachi Factory (72) Inventor, Shuichi Tabata 3-chome, Hitachi City, Ibaraki, Hitachi, Ltd., Hitachi Plant (72) ) Inventor Takao SAKANACHIBA, Hachimachi 3-chome, Ichiba, Ibaraki Prefecture Hitachi Ltd. Hitachi factory (56) References: Actual development Sho 64-8988 (JP, U)

Claims (4)

[Claims] 1. A housing (1) is provided with a pair of upper and lower fixed suction ports (4) capable of moving up and down, and movable suction ports (5) are provided on both sides of the fixed suction port (4) so as to be movable in the strip width direction, An elastic body (8) is detachably provided at the tips of the fixed suction port (4) and the moving suction port (5), and the suction duct (10) is ventilated with the fixed suction port (4) and the moving suction port (5).
An apparatus for removing foreign matter from the surface of a strip, wherein: 2. Removal of foreign matter on the strip surface according to claim 1, wherein two rows of elastic bodies (8) are provided at the tips of the fixed suction port (4) and the moving suction port (5) so as to be able to move up and down. apparatus. 3. A guide rail (12) for allowing a guide plate (13) to be inserted between the fixed suction port (4) and the moving suction port (5). Foreign matter removal device on the strip surface. 4. A single or a plurality of suction ports that are movable in the width direction of the strip plate, an elastic body that is detachably provided at the tip of the suction ports, and a suction port that is attachable to the suction ports. A foreign matter removing method on a strip surface, comprising a suction duct, and moving the movable single or plural suction ports so as to cover an area inside a width end of the strip plate.