JP2001047113A - Device for removing foreign matter on roll surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for removing foreign matters on the surface of a roll by which the close contactness with the roll is enhanced, pressing pressure is optimally adjusted and the dust clogging in blade is effectively removed. SOLUTION: This device consists of a doctor holder 10 which is arranged along the outer surface of the roll, a supporting shaft 13 which is attached to the doctor holder 10 in parallel to the outer surface of the roll, plural doctor blades whose base parts are supported freely rotatably with the supporting shaft 13, and weights of the same number for respectively pressing the tip of each doctor blade against the surface of the roll and energizing it. The weight is fixed to a bolt studded in the base part of the doctor blade. The doctor blade is held with a supporting link 30 and the supporting link 30 is oscillated with an air cylinder connected to the base part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing foreign matter on a roll surface. If dust, dust or the like is attached to the surface of the rolling roll, fine scratches are made on the surface of the rolled plate. In particular, in the case of stainless steel sheets, minute scratches also reduce the commercial value. Therefore, foreign substances adhering to the surface of the rolling roll must be removed. The present invention relates to an apparatus for removing such foreign substances such as dust and dirt attached to the roll surface.

[0002]

2. Description of the Related Art There are the following conventional examples of an apparatus for removing foreign matter on a roll surface. Conventional Example I: Net-shaped paper is pressed against the roll surface,
A foreign object is entangled with a net. Conventional Example II: A brush roll is used to scrape foreign substances on the roll surface. Conventional Example III: Scrap foreign matter on the roll surface with a doctor knife. This Conventional Example III includes Japanese Patent Publication No. 7-73728.
No. using an integrated doctor blade described in
As disclosed in Japanese Utility Model Publication No. Sho 53-5625, a large number of small doctor blades are mounted on a single frame to be integrated, and these blades are configured to oscillate in the axial direction of a roll.

[0003]

However, each of the above-mentioned prior arts has the following problems. In Conventional Example I, although effective in removing dust and the like, it reduces the glossiness of the roll surface, and thus reduces the glossiness of the plate surface. In Conventional Example II, although there is almost no effect on the roll surface, if the roll peripheral speed is high (for example, 200 mpm or more), the dust removing effect is weak. In Conventional Example III, even if the number of blades is one or the number of blades is large, the blades are attached to one frame, so that they cannot be uniformly adhered to the roll surface. Particularly in the case of a roll with crowning, a gap is easily formed between both ends of the roll, so that there is a problem that dust and the like are clogged and the roll is scratched in the circumferential direction.

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention improves the adhesion to a roll, adjusts the pressing pressure on the roll surface optimally over the entire length of the roll, and effectively removes dust on the blade. It is an object to provide a removal device.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for removing foreign matter on a roll surface, wherein a support shaft is mounted in parallel with an outer surface of the roll, and a base portion of the support shaft is individually rotatably supported on the support shaft. A plurality of doctor blades, and urging means attached to each of the doctor blades and urging the tip of the doctor blade against the surface of the roll. According to a second aspect of the present invention, there is provided a roll surface foreign matter removing apparatus according to the first aspect, wherein a doctor holder arranged along an outer surface of the roll, a bendable support link for supporting the doctor holder, and a surface of the roll. And a reciprocating means for reciprocating the support link along the sliding shaft, the sliding shaft being slidably supporting the base of the support link. . The foreign matter removing device on the roll surface according to claim 3 is:
2. The invention according to claim 1, wherein the urging means comprises a bolt implanted at a base of the doctor blade, a weight attached to the bolt, and a nut for fixing the weight to the bolt. It is characterized by. According to a fourth aspect of the present invention, in the second aspect of the present invention, the reciprocating means is an air cylinder connected to a base of the support link.

According to the first aspect of the present invention, since there are a plurality of doctor blades, each of which is individually rotatable with respect to the support shaft, the tip of each doctor blade must be a roll even if the roll has a crown. Adhere uniformly to the surface. Further, since each doctor blade is individually pressed against the roll surface by the corresponding urging means, the adhesiveness is further improved, and foreign matter on the roll surface can be effectively removed. According to the invention of claim 2, the support link for supporting the doctor holder is moved by the reciprocating means.
Since the doctor blade is reciprocated along the sliding axis, the distal end of the doctor blade also reciprocates while being in contact with the roll surface. Therefore, dust and the like caught between the doctor blade and the roll surface can be effectively removed. Further, when the roll is replaced, the roll can be retracted so as not to be in the way. Claim 3
According to the invention of (1), the pressing force of the doctor blade can be adjusted optimally by moving the weight closer to or away from the base end of the doctor blade within the entire length of the bolt, and furthermore, the doctor blade can be individually adjusted for a plurality of doctor blades. In addition, the degree of adhesion of the doctor blade to the roll surface can be made uniform, and the foreign matter removing effect can be enhanced over the entire length of the roll. Claim 4
According to the invention, since the air cylinder is used as the means for reciprocating the support link, an accident such as oil leakage does not occur and the steel plate during rolling is not stained, so that the commercial value can be maintained high.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a foreign matter removing device according to a first embodiment of the present invention, FIG. 2 is a side view of the foreign matter removing device, FIG.
FIG. 4B is an enlarged rear view of a main part of the foreign matter removing device, FIG. 4 is a front view of the foreign matter removing device according to the second embodiment of the present invention, FIG. 5 is a side view of the foreign matter removing device, and FIG. It is a side view of the skin pass mill to which the foreign material removal device of the invention is applied.

First, a schematic configuration of a foreign matter removing apparatus of the present invention and a skin pass mill to which the apparatus is applied will be described with reference to FIG. In the figure, reference numerals 1 and 2 denote rolls of a skin pass mill, S denotes a steel plate, and 3 denotes a guide roll. The steel sheet S is guided by guide rolls 3, 3..., Passed between the rolls 1 and 2, and subjected to skin pass finishing (rolling). Brush rolls 4 and 5 for removing foreign matter such as dust are attached to the rolls 1 and 2, respectively. Each of the brush rolls 4 and 5 has a function of bringing a rotating brush into contact with the surfaces of the rolls 1 and 2 to remove dust. In addition, foreign matter removing devices A and B according to the present invention are attached to the rolls 1 and 2, respectively.

Next, the foreign matter removing devices A and B will be described. 1 and 2, reference numeral 10 denotes a doctor holder,
It is composed of bosses 11 at both ends and a connecting plate 12 for connecting them. The boss 11 is L-shaped when viewed from the side, is made of resin, is easily engaged with and disengaged from the support shaft 13, and when the doctor blade 15 is pushed along the support shaft 13, the doctor blade 15 13 so as not to hinder rotation. A support shaft 13 is passed through the boss portions 11 at both ends, and both ends of the support shaft 13 project outward from the boss portion 11, and two guides attached to the machine frame of the skin pass mill. 14 and 14. Four doctor blades 15 are attached to a spindle 13 in the doctor holder 10.

The details of the doctor blade 15 will be described with reference to FIG. The doctor blade 15 includes a blade 16, a holding block 17, and a mounting bracket 18 for mounting the blade 16 to the holding block 17. The holding block 17 incorporates two bearings 19 therein,
The doctor blade 15 is rotatably mounted on the support shaft 13 via the bearing 19. An urging means 20 for urging the blade 16 against the roll surface is attached to the doctor blade. The urging means 20 is provided with bolts 21 implanted in the holding block 17.
And weights 22 passed through the bolts 21, and lock nuts 23 and 24 for fixing the weights 22 to the bolts 21. This weight 22 is a lock nut 2
When the tightening positions of the bolts 3 and 24 are changed and the bolt 21 is moved toward the distal end, the urging force is increased, and when the bolt 21 is moved toward the proximal end, the urging force is reduced.

The description will be made again with reference to FIGS. A support link 30 is connected to the doctor holder 10. The support link 30 includes a distal link 31 and a proximal link 32, both of which are connected by pins 35 so as to be freely bent. The tip link 31 is connected to the doctor holder 1
0, and is connected to the base end link 32.
The boss 32a is connected to the sliding shaft 4 via the bearing 36.
1 is inserted. Two sliding shafts 41 are arranged in parallel and supported by brackets 42, 42 fixed to the machine frame of the skin pass mill. An air cylinder 44 is connected to the boss 32a of the proximal link 32 via a stay 43. This air cylinder 44
Constitutes the reciprocating means described in the claims. When the air cylinder 44 repeats the expansion and contraction operation, the support link 30 reciprocates on the sliding shaft 41, and as a result, the doctor blade 15 Will be translated.

As described above, according to the foreign matter removing apparatus A of the present embodiment, there are four doctor blades 15, which are individually rotatable with respect to the support shaft 13.
In addition, they are individually urged by the weights 22 so as to be in close contact with the roll surface. For this reason, the adhesiveness of each blade 16 to the roll surface is good, which means that even if the roll 1 is a crowning roll and gaps are likely to be formed at both ends of the roll, the blade 16 hits the center of the roll.
Since the blade and the blade 16 which comes into contact with the end of the roll rotate individually, good adhesion can be maintained. Therefore,
The effect of removing dust is enhanced. Furthermore, air cylinder 4
By driving the blade 4 to oscillate the blade 16, even if the dust is caught between the blade 16 and the roll surface, the dust can be wiped off, so that the dust removing effect is further enhanced.

Next, a foreign matter removing apparatus B according to a second embodiment of the present invention will be described with reference to FIGS. The foreign matter removing device B is installed on the roll 2 so as to remove dust from below. Since its basic configuration is the same as that of the foreign matter removing device A, only the differences will be described below.
The boss 11 of the doctor holder 10 is rectangular,
3 are mounted through. The blade 16 constituting the doctor blade 15 and the bolt 21 constituting the urging means
The weight 22 and the weight 22 are arranged in opposite directions about the support shaft 13. That is, the counterclockwise moment of the weight 22 presses the blade 16 against the roll surface. The support link 30 has an intermediate link 33, 34 in addition to a distal link 31 and a proximal link 32. When the support link 30 including the four links 31, 32, 33, and 34 is bent, the doctor blade 15 can be retracted when the roll is replaced. The other configuration is the same as that of the foreign matter removing device A, and therefore, the same components are denoted by the same reference numerals and description thereof will be omitted. The foreign matter removing device B of the present embodiment can also provide the same high foreign matter removing effect as the foreign matter removing device A.

[0014]

According to the first aspect of the present invention, each of the plurality of blades is rotatable with respect to the support shaft, and each of the doctor blades is individually urged by the corresponding biasing means. Since it is pressed against the roll surface, the adhesiveness is further improved, and foreign matter on the roll surface can be effectively removed. According to the second aspect of the invention, the support link is reciprocated by the reciprocating means, and the doctor blade is oscillated with the tip of the doctor blade in contact with the roll surface. For this reason,
Dirt caught between the doctor blade and the roll surface is also effectively removed. Further, when the roll is replaced, the roll can be retracted so as not to be in the way. According to the third aspect of the present invention, the pressing force of the doctor blade can be adjusted optimally by moving the weight closer to or away from the doctor blade, and furthermore, it is possible to individually adjust the plurality of doctor blades. The degree of adhesion can be made uniform, and the foreign matter removing effect can be enhanced over the entire length of the roll. According to the invention of claim 4, since the air cylinder is used as the means for reciprocating the support link, an accident such as oil leakage does not occur and the steel plate during rolling is not stained, so that the commercial value is increased. Can be maintained.

[Brief description of the drawings]

FIG. 1 is a front view of a foreign matter removing device according to a first embodiment of the present invention.

FIG. 2 is a side view of the foreign matter removing device.

FIG. 3A is an enlarged view of a main part of the foreign matter removing apparatus, and FIG.
The figure is an enlarged rear view of the main part of the foreign matter removing device.

FIG. 4 is a front view of a foreign matter removing device according to a second embodiment of the present invention.

FIG. 5 is a side view of the foreign matter removing device.

FIG. 6 is a side view of a skin pass mill to which the foreign matter removing device of the present invention is applied.

[Explanation of symbols]

 Reference Signs List 1 roll 2 roll 10 doctor holder 13 support shaft 15 doctor blade 16 blade 20 urging means 21 bolt 22 weight 30 support link 41 sliding shaft 44 air cylinder

Claims (4)

[Claims] 1. A support shaft mounted in parallel with the outer surface of a roll, a plurality of doctor blades whose bases are individually rotatably supported on the support shaft, and mounted on each of the doctor blades. A device for removing foreign matter from the surface of the roll, comprising: a biasing means for pressing the tip of the doctor blade against the surface of the roll. 2. A doctor holder arranged along the outer surface of the roll, a bendable support link for supporting the doctor holder, and a base arranged parallel to the surface of the roll to slide the base of the support link. 2. The apparatus according to claim 1, further comprising a sliding shaft movably supported, and reciprocating means for reciprocating the supporting link along the sliding shaft. 3. The urging means comprises a bolt implanted at a base of the doctor blade, a weight attached to the bolt, and a nut for fixing the weight to the bolt. The apparatus for removing foreign matter from a roll surface according to claim 1. 4. The apparatus according to claim 2, wherein said reciprocating means is an air cylinder connected to a base of said support link.