JPH0419012A - Strip surface flaw removing device - Google Patents

Abstract

PURPOSE:To provide a surface flaw removing device of such a type that a traveling part travels along a guide rail by arranging so that the traveling part travels round the axis of a strip while guided by a guide rail, and furnishing this traveling part with a flaw removing tool, which is movable in the direction of approaching or going apart from the strip and which is contacted with the strip surface when having approached. CONSTITUTION:The base part 1 is equipped with a ring shaped guide rail 10 going one turn around the axis of a wire W, and a flaw removing tool 3 is borne by a holder part 23 of a traveling part through a pivot 30 with possibility of revolving in the direction of arrows A1 and A2, and is revolved by a motor 24 round the pivot 30 to move in the direction as approaching or going apart from the wire W. The traveling part 2 travels along the guide rail 10 when wheel 41 is rotated by a motor 42. The motor 24 is operated, and the tool 3 is revolved in the direction of arrow A1 round the pivot 30 as approaching the wire W along the length of the wire W, and the cutting edge 32 is contacted with the wire W outside surface, which is thus cut in with the cutting edge 32, and flaws on the wire W surface are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a strip surface flaw removing device for removing surface flaws from strip materials such as rods, wire rods, etc.

[Prior Art] A wire rod surface flaw removing device that removes surface flaws from a wire rod is equipped with a rotor having a central hole, as disclosed in Torakai Publication No. 63-41418. The wire is passed through the central hole, and the rotor is equipped with a flaw removal tool that points in the centripetal direction of the wire, and the rotor is rotated by a stepping motor mechanism in response to a flaw signal detected by the flaw detection means. Then, place the flaw removal tool facing the flaw on the wire rod.
There is a known method in which the flaw removal tool is then moved forward in the centripetal direction of the wire and is brought into contact with the outer surface of the wire, thereby cutting the outer surface of the wire with the blade at the tip of the flaw removal tool.

In addition, as a surface flaw removing device for wire rods, JP-A-63-34
As disclosed in Japanese Patent No. 012, a plurality of cutting tools oriented in the centripetal direction of the wire are placed in standby radially around the wire, and the cutting tools are activated by a flaw signal of the wire detected by a flaw detection means. There is a known method in which the wire is advanced in the centripetal direction of the wire and the outer surface of the wire is cut by the blade of the cutting tool.

[Problems to be Solved by the Invention] The present invention uses a method different from the above-mentioned surface scratch removal device, that is, a guide rail portion extending at least in an arc around the axis of the strip is provided to remove scratches on the strip. An object of the present invention is to provide a surface flaw removing device in which a running section runs along a guide rail section.

[Means for Solving the Problems] A surface flaw removing device for a strip according to the present invention includes a guide rail disposed near a strip running in the length direction and extending at least in an arc shape around the axis of the strip. a base having a section, a running section disposed on the base and traveling around the axis of the strip guided by the guide rail section, and a running section disposed on the running section that moves in the direction toward and away from the strip. and at least one flaw removal tool that can be applied to the surface of the strip in close proximity.

The guide rail section provided at the base extends at least in an arc shape around the axis of the strip, and guides the running section. Therefore, the guide part can have a structure in which it makes one turn around the axis of the strip material, or a structure in which it makes many turns around the axis of the strip material in a spiral shape. In addition, the guide rail part can be configured to go around the axial center of the strip material approximately half a circle, or approximately 1/3 turn around the axial center of the strip material. A plurality of them are arranged in series along the length of the strip with phase shifts. Note that the phase angle can be selected as appropriate. The shape and structure of the guide rail portion can be selected as appropriate, and may be a concave rail shape or a convex rail shape, a so-called molar rail structure, or a structure in which an appropriate number of rolling elements such as rollers and balls are arranged in a row. You can also. Further, the structure of the guide rail portion may be an inner gear structure or an outer gear structure with continuous teeth. In the case of such a gear structure, the retention of the running position of the running section can be improved by the meshing of the teeth of the gear with the southern part. The guide rail portion may also be provided with a low friction portion in order to reduce friction when the traveling portion travels. The low-friction portion may be a solid lubricant layer made of, for example, fluororesin, nylon resin, graphite, molybdenum disulfide, or the like.

The running section is guided by the guide rail section and runs around the axis of the strip. The running section can be of a trolley type. A motor drive method can be adopted as a method for driving the traveling section. As for the motor drive method, a built-in method in which the motor is built into the running section, and an external method in which the motor is installed outside the running section can be adopted. When the built-in method is adopted, an electrode section is provided on the guide rail section or other part of the base, and a brush section is provided on the running section, so that when the running section runs, the brush section of the running section slides against the electrode section. A configuration may be adopted in which power is supplied from the electrode section to a motor built in the traveling section as the electrode section contacts and slides.

In addition, in the device of the present invention, a lock part that locks the running part can be provided at the position where the running part has traveled.If you look at the lock part, even if an external force is applied, the displacement of the running part can be suppressed. be able to.

As the lock part, a mechanism that attracts and locks using electromagnetic force or a mechanism that locks using a locking claw can be adopted.

The flaw removing tool is for removing flaws from the strip material, and can employ, for example, a bit type or a wire brush type.

The flaw removal tool can be configured such that the amount of protrusion of the eave removal part can be adjusted as necessary. The flaw removal tool can be pivoted along the length of the traveling strip H in the direction toward and away from the strip. If the flaw removal tool is made to be able to rotate like this, the rotation form of the flaw removal tool may be an arc shape, a perfect circle or an ellipse, or other short circular or elliptical shapes. In this case, it is possible to displace the turning center area of the flaw removing tool by a required amount or adjust the length of the eaves remover.

In the apparatus of the present invention, as shown in the block diagram of FIG.
a gap detection means for detecting a gap between the guide rail part and the running part; a flaw detection means for detecting the position of a flaw in the strip;
a traveling means for causing the traveling section to travel along the guide rail section;
The present invention may be configured to include a tool operating means for moving the flaw removal tool toward or away from the strip, an identification means for performing an identification process on the strip, and a control means. The gap amount detection means can be, for example, a method of detecting the gap amount using electrostatic capacitance or a magnetic method of detecting the gap amount using magnetism.

The traveling means can be configured using a mechanism in which a drive motor causes wheels or gears to travel along a guide rail section.

The tool operating means can be configured using a drive motor mechanism or a cylinder mechanism. The identification means can be configured using a marking device that sprays paint. Here, a gap signal from the gap detection means is input to the control means, and the control means operates the tool actuating means in accordance with the gap signal to control the amount by which the flaw removal tool approaches the strip. Furthermore, the flaw signal from the paper detection means is input to the control means, which operates the traveling means in response to the flaw signal to bring the flaw removal tool face to face with the flaw in the strip material, and also determines that the flaw is always deep based on the flaw signal. If so, the identification means is activated to perform identification processing of the strip.

Typical strips that can be removed using the apparatus of the present invention include wire rods and rods, and the cross-sectional shape thereof is usually circular, but is not limited to this, and may also be solid or hollow. Regardless of the shape or material.

[Function] In the surface flaw inspection device of the present invention, when removing surface flaws from a strip, the running section is caused to run along the guide rail section depending on the position of the flaw. Furthermore, the flaw is removed by applying the flaw removing tool to the flaw.

Once the surface flaws on the strip have been removed, the flaw removal tool is removed from the outer surface of the strip.

[First Embodiment] Hereinafter, a surface scratch removing apparatus of the present invention will be explained according to a first embodiment shown in FIGS. 1 to 5. The apparatus of this embodiment removes surface flaws from a wire running in the longitudinal direction.

As shown in FIGS. 1 and 2, the base 1 is disposed near the wire W. As shown in FIGS. The base 1 has a ring shape that goes around the axis of the wire W once with a predetermined radius of curvature. At the base 1,
A ring-shaped guide rail portion 10 that goes around the axis of the wire W once is provided. The guide rail section 10 has an electrode plate 1
0c is provided.

The running section 2 is guided by a guide rail section 10 and runs around the axis of the wire W. The running section 2 includes a platform section 20, wheels 21, a first motor 22 for rotating the wheels 21, a holding section 23, a second motor 24, and a brush section 25.

The brush portion 25 and the electrode plate 10c are in sliding contact, and as a result, the first
Power is supplied to the motor 22, the second motor 24, etc. When the first motor 22 rotates, the wheels 21 rotate and the running section 2 runs along the guide sill section 10. The reference position of the traveling section 2 is set at a position corresponding to the bottom section 10c of the guide rail section 10. Therefore, when the traveling section 2 is not in operation, it is waiting at the reference position as shown in FIG.

In this embodiment, a gap sensor 60 for detecting the gap 1 between the running section 2 and the guide rail section 10 is provided in the running section 2. The gap sensor 60 can be of a type that detects the gap φ using capacitance, or of a magnetic type that detects the amount of gap using magnetism.

The flaw removal tool 3 is held in the holding part 23 of the running part 2 via a pivot shaft 30 so as to be able to rotate in the directions of arrows A1 and A2.Here, when the second motor 24 is driven, the transmission mechanism of the enclosure is activated. The flaw removing tool 3 is configured to pivot around a pivot shaft 30 via the pivot shaft 30 .

Then, the flaw removing tool 3 moves toward and away from the wire W.

Furthermore, the base 1 is equipped with a second running section 4.

Similarly to the traveling section 2, the second traveling section 4 also has a platform section 40, a wheel 41, a third motor 42 for rotating the wheel 41, a roller 43 in a free state, and an enclosure transmission mechanism that moves the roller 43 in the directions of arrows C1 and C2. It has a fourth motor 44 that moves the motor forward and backward through the motor. Then, the wheels 41 are rotated by the third motor 42 built into the running section 2, so that the running section 2 moves along the guide rail section 10.

Next (FIG. 3 shows a schematic diagram in which the surface flaw removing device of this embodiment is applied to a wire rod manufacturing line. As shown in FIG. ,
A pre-straightening device 51 that ensures the straightness of the wire rod W, a shot blast processing device 52 that removes scale from the surface of the wire rod W, a machine 53 for presetting, a drawing die 54 for the first stage, a flaw detector that detects flaws on the surface of the wire rod W. A device 55, a second-stage drawing die 56, a marker 57 for marking the wire W with paint, and a winding drum 58 for converging the wire W are arranged in series. A base 1 of the surface flaw removing apparatus of this embodiment is installed between the two. Note that the flaw detection device 55 is a device that employs an eddy current flaw detection method, and detects flaws by dividing the outer surface of the wire W into 24 parts in the circumferential direction. Therefore, if a flaw is found in the third region of the 24 circumferentially divided regions of the wire W, the flaw detector 55 outputs a flaw signal of the third region, and the flaw detector 55 outputs a flaw signal of the third region. The flaw signal of 55 is input to the control system M6 which has CPtJ as a component.

Further, when a flaw is found in the fifth region of the 24 circumferentially divided regions of the wire W, the flaw detection device 55 outputs a flaw signal of the fifth region to the control device 6.

As shown in FIG. 3, the signal from the gap sensor 60 is output to the control wJ device 6, and the control device M6
The motor 22.2 of the traveling section 2
4. Controlling the driving of the motors 42 and 44 of the second traveling section 4.

(Function of the Example) Next, the function of the surface scratch removing device of the present example will be explained along with its usage method. First, as can be understood from FIG. 3, the wire W wound around the supply stand 50 is rewound and reworked into the wire W using the reworking device 5, and then the wire W is reworked using the shot blasting device 52. The surface scale is removed, and the tip of the wire VJW is cut to a predetermined length using a cutting machine 53, and then the wire +JW is drawn out using a drawing die 54 to form and cover.

Then, flaws on the wire W are detected by the flaw detection device 55, and if any flaws are detected, the outer surface of the wire W is cut using the surface flaw removal device of this embodiment in accordance with the procedure described later to remove the flaws. When surface flaws are removed, cutting marks are formed and the roundness of the wire rod W is reduced, so the wire rod W with reduced roundness is pulled out using a die 56
The wire rod W is further pulled out to reduce its diameter and increase the roundness of the wire W, and
It is wound up using the winding tram 5B.

Now, the case where the surface flaw removing device of this embodiment removes and covers flaws formed on the surface of the wire W will be described. In this case, the flaw signal from the flaw detection device 55 is detected by the flaw detection device 6.
, the first motor 22 is driven in response to the flaw signal to rotate the wheel 21 and rotate the wheel 21 between the running section 2 and the guide rail section 10.
For example, it turns around the cross section of the wire W in the τ-arrow 81 direction shown in FIG.

At this time, if the flaw detection device 55 outputs a defect number in the third area, the first motor 22 rotates by an angle corresponding to the third area, and therefore the running section 2 rotates at an angle corresponding to the third area. The angle θ is the one that just travels.

In addition, whether the flaw signal in the fifth area is detected from the flaw detection device N55 or the control device 6
If input is input to , the first motor 22 rotates by an angle corresponding to the fifth region, and therefore the traveling section 2 travels by an angle corresponding to the fifth region.

Next, in response to the flaw signal from the flaw detection device 55, the second W control device 6 is activated.
The motor 24 is driven to rotate the paper removal tool 3 about the support shaft 30 in the direction of arrow A1. That is, the paper removing tool 3 is rotated along the length direction of the wire W in a direction approaching the wire W, and the blade portion 32 is brought into contact with the outer surface of the wire W. As a result, the outer surface of the wire W is cut and cut by the blade portion 32, and therefore, flaws on the surface of the wire W are removed.

At this time, the second running section 4 is also guided by the control device 6 (the guide rail section 10G) and runs, so that the second running section 4 is located on the opposite side of the running section 2 via the wire W. The fourth motor 44 is driven to move the roller 43 in the direction of the arrow C1.As a result, the portion of the wire W on the opposite side to the blade portion 32 (the outer surface 1) is supported by the roller 43, and cutting is performed well.
This is done. In addition, the running section 2 and the second running section 4 or 4
controlled to avoid collisions.

By the way, when the flaw detection device 55 no longer outputs the flaw signal, the control device 64, 1 second motor 24 is further driven to move the paper removal tool 3 away from the outer surface of the wire rod W, that is, further move the arrow △] direction to separate the blade portion 32 of the paper removal tool 3 from the outer surface of the wire W. Furthermore, regulation 61
The device 6 causes the first motor 22 to commute and causes the traveling section 2 to move to a predetermined reference position. Similarly, when the flaw detection device 55 no longer outputs the flaw signal, the control device 6 controls the fourth motor 4.
4 to work, move roller 43 in the direction of arrow C2, and line! 1W, and at the same time, the third motor 42 is operated to return the second traveling section 4 to its original position.

Further, when a flaw signal is output from the flaw detection device 55, the same operation as described above is repeated to cause the traveling section 2 and the second traveling section 4 to travel.

Next, the operation of the CPU constituting the control device 6 will be explained with reference to a flowchart showing a cutting routine in FIG.

That is, as shown in FIG. 5, in step 5100, it is determined whether or not the wire W has flaws. If there is a flaw, the depth of the flaw is determined based on the flaw signal from the flaw detector 55 in step 8102.

If the depth of the flaw is so deep that it cannot be cut by the blade portion 32 of the flaw removing tool 3, the marker 57 is driven to the drive shaft 11 and the wire W is marked in step 5200, and then the process returns to the main routine.

If the depth of the flaw is within a predetermined value and can be removed by cutting with the flaw removal tool 3, the position of the flaw in the circumferential direction of the wire W is detected in step 5104. and step 510
At step 6, the first motor 22 is driven to cause the traveling section 2 to travel toward the flaw, and the third motor 42 is driven to cause the second traveling section 4 to travel. Then, in step S107, it is determined whether the traveling section 2 and the second traveling section 4 have traveled to the position indicated by the flaw signal of the flaw detection device @55. If the running section 2 and the second running section 4 are running at the position indicated by the flaw signal of the flaw detection device 55,
In step 3108, the second motor 24 is driven to rotate the flaw removing tool 31 in the direction of arrow A to apply the blade part 32 to the flaw in the wire W, and the fourth motor 44 is driven to move the roller 43 onto the wire W. Apply to the outside. In step 5IIO, it is determined that the blade portion 32 is cutting against a flaw in the wire W.

Further, in step S1]2, it is determined whether there is a flaw in the wire WG. If no flaw exists, step 811
4, the second motor 24 is driven, the flaw removal tool 3 is further rotated to separate the blade part 32 from the outer surface of the wire W, and the fourth motor 44 is reversed ljl to separate the roller 43 from the wire W. Then, in step 5116, it is determined whether the blade portion 32 is separated from the wire W. Further, in step 8118, the first motor 22 is driven to return the running section 2 to its original reference position, and the third motor 42 is driven to return the second running section 4 to its original position. In step 3120, it is determined whether the running section 2 and the second running section 4 have returned to their original positions. Running () part 2,
If the second traveling section 4 has returned to its original position, step 51
At step 22, the flaw removal tool and roller 43 continue to be in a standby state.

As a result of the determination in step 3100 described above, if there is no flaw in the wire W, then in step 5202 the running section 2, the second
It is determined whether the traveling section 4 is in a standby state. If it is not in the standby state, jump to step 5114 and step 51
14. Execute step 8116, and if it is in the standby state, return to the main routine.

(Effects of Example) As described above, in this example, the guide rail part 10 that goes around the axis of the wire W is provided, the running part 2 runs along the guide rail part 10, and the running part 2 1, which faces the flaws on the wire rod W. Therefore, the flaw removal tool 3 installed in the running section 2 can face the flaws on the wire rod W, and the flaw removal process on the wire rod W can be performed. Furthermore, in this embodiment, the running portion 2 is not continuous in the circumferential direction of the wire W;
It is easier to run than a system that rotates a continuous rotor in the circumferential direction. In addition, in this embodiment, the second running section 4 equipped with the rollers 43 that support the wire rod W when removing defects from the wire rod W can be run along the guide rail section 10.
3 to securely support the wire rod W and eliminate scratches 1q
Ru.

By the way, in the conventional surface scratch claw devices disclosed in the above-mentioned Utility Model Application Publication No. 63-41418 and Japanese Patent Application Publication No. 63-34012, as schematically shown in FIG. Dance line IJW from the outside of W
The cutting tool 10 is oriented in the centripetal direction of the paper.
00 is advanced in the centripetal direction of the wire W, that is, in the direction of the arrow Y. Here, when the cutting tool 1000 is advanced in the centripetal direction by ΔfJ8 from the position S9 where it starts contacting the outer surface of the wire W, the cutting depth of the cutting tool 1000 is Δh8, and here, ΔfJB and Δh8 are equal values. (ΔJ)8=Δh8). In the conventional device mentioned above,
The amount of advance Δg8 of the cutting tool 1000 directly affects the cutting tool 1.
The amount of cut Δh8 is 000. Therefore, there is a problem that the cutting tool 1000 easily enters the wire rod W by impact. Therefore, the wear and tear on the cutting edge portion of the cutting tool 1000 is large.

In this regard, in this embodiment, as schematically shown in FIG.
It turns along an imaginary line N around . Here, when the position where the blade part 32 of the paper removal tool 3 starts contacting the outer surface of the wire vJW is set to 81, the blade part 32 rotates along the length direction of the wire rod W from position S1 to position S2, Blade part 32 or △, l
When moving forward by l'l, the blade portion 32 descends by Δh1, and the wire W is cut by Δh1. Here, Δf
△h] is a smaller value than J1 (ΔJ)1>Δh1
). Therefore, in this embodiment, the cutting amount of the blade portion 32 can be made smaller than the amount of advance of the blade portion 32.

Therefore, the blade portion 32 is drawn along the imaginary line N1. :Even if it is moved forward, the blade part 32 can be smoothly inserted into the wire W, and the reaction force on the blade part 32 can be reduced accordingly, so that the impact when cutting the wire W can be minimized. be able to. Therefore, wear and tear on the blade portion 32 can be reduced, and it is advantageous to reduce the required rigidity of the blade portion 32.

In addition, in this embodiment, as schematically shown by the solid line in FIG.
4, the blade part 32 turns along the length direction of the wire W from position S3 to position S4, and when the blade part 32 moves forward by Δp2, the blade at the tip of the paper removal tool 3 Part 32 is △
It descends by h2 and the wire W is cut by Δh2. Here, as shown in FIG. 4, Δh2 is a much smaller value than ΔR2 (Δg2>>△h2>.Moreover, even if Δ, i!1 and Δ12 mentioned above are the same size, Δh2
is a smaller value than Δh1 (Δh2 × Δh1).

Therefore, in this embodiment, as the blade portion 31 approaches the vertical position S4 and the cutting depth becomes deeper, the blade portion 32 is
Even if it is advanced by J2, the cutting amount Δh2 of the blade portion 32 becomes extremely small (Δ12)Δh2).

Furthermore, in this embodiment, as shown schematically in FIG.
Ka△, Il! When moving forward by 3, the blade portion 32 at the tip of the paper removing tool 3 rises by Δh3.

Here, even if ΔI2 and Δ13 are the same size, Δh
3 is a larger value than Δh2 (Δh3>Δh2).

Therefore, in this embodiment, as the blade part 32 approaches the position S6 and floats away from the wire W, the advantage is that the blade part 32 can be quickly retracted from the wire W.

[Other Examples] A second embodiment of the invention is shown in FIGS. 6 and 7.

The second embodiment has basically the same configuration as the first embodiment,
However, the blade portion 32 of the paper removal tool 3 is of a type that moves forward and backward along the centripetal direction of the wire W, that is, in the directions of arrows B1 and B2.

A third practical example of the present invention is shown in FIGS. 8 and 9.

The third embodiment has basically the same configuration as the second embodiment,
However, the guide rail section 10 has a half-ring shape, and the 9th
As shown in the figure, the guide rail sections 10 are arranged in series along the length of the wire W. Each guide rail part 10
is equipped with running section 2.

A fourth embodiment of the present invention is shown in FIGS. 10 and 11. The fourth embodiment has the same basic structure as the first actual seat example. are arranged in series in the longitudinal direction of the wire rod W. Each guide rail section 10 is equipped with a running section 2.

A fifth embodiment of the present invention is shown in FIGS. 12 and 13. Fifth
The embodiment has basically the same configuration as the first practical example, except that the guide rail section 10 is in the shape of an inner gear with an internal tooth section 10f directed inward, and the running section 2 has wheels instead of wheels. It is equipped with 26 gears. and the motor 2 of the traveling section 2
When 2 is driven, the gear 26 rotates while meshing with the internal toothed portion 10f, and the traveling portion 2 travels along the guide rail portion 10.

Similarly, the second traveling section 4 is equipped with a gear 46 instead of wheels, and when the third motor 42 of the second traveling section 4 is driven, the gear 46 rotates while meshing with the internal toothed section 10f. A second running section 4 runs along a guide rail section 10.

The same effects as in the first embodiment can be obtained in the second to fifth embodiments described above.

However, the surface flaw removal apparatus of the present invention is not limited to the above-mentioned embodiments. For example, the flaw detection equipment used in the first embodiment may be a magnetic flaw detection method, a radiographic method, an ultrasonic method, etc. [Effects of the Invention] According to the device of the present invention, the running section equipped with the flaw removal tool runs along the guide rail section. It is configured to do this.

Therefore, the flaw removal tool installed in the running section can be brought to face the flaw on the strip, and the flaw removal process on the strip can be performed.

Further, in the present invention, when the flaw removal tool is rotated along the length direction of the strip, the depth of cut Δh can be made smaller than the advance amount Δ9 of the flaw removal tool. Therefore, the flaw removal tool can be inserted into the strip material smoothly, and the reaction force and impact when cutting the strip material can be minimized. Therefore, it is advantageous to reduce the wear and tear of the flaw removal tool and to reduce the rigidity of the flaw removal tool.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention, and FIG. 1 shows the main parts of the surface flaw removing device, and is a sectional view taken along the line X-X in FIG. 2, and FIG. is a front view of the main parts of the surface flaw removing device, and FIG. 3 is a configuration diagram of a line to which the surface flaw removing device is applied.
Figure 4 is a side view schematically showing the main parts of the flaw removal tool in a rotated state, and Figure 5 is the control i! 3 is a flowchart showing the operation of the CPU of the I device. 6 and 7 show a second embodiment of the present invention, and FIG.
The figure is a sectional view of the main part, and Figure 7 is a front view of the main part. 8 and 9 show a third embodiment of the present invention, and FIG.
The figure is a front view of the main part, and FIG. 9 is a sectional view of the main part. 1st
0 and 11 show the fourth embodiment of the present invention, and the first embodiment
FIG. 0 is a front view of the main part, and FIG. 11 is a sectional view of the main part. 12 and 13 show a fifth embodiment of the present invention,
FIG. 12 is a front view of the main part, and FIG. 13 is a front view of the main part. FIG. 14 is a block diagram applicable to the device of the present invention. FIG. 15 is a side view showing the operating mode of a conventional flaw removal tool. In the figure, 1 is the base, 10 is the guide rail part, 2 is the running part, 3
indicates a scratch removal tool.

Claims (3)

[Claims] (1) A base having a guide rail section disposed near the strip running in the length direction and extending at least in an arc around the axis of the strip, and a base disposed on the base and guided by the guide rail. a running part that runs around the axis of the strip; and a running part that is disposed in the running part and is movable in a direction toward and away from the strip, and is applied to the surface of the strip as it approaches. 1. An apparatus for removing surface defects on a strip, characterized in that it is comprised of at least one defect removal tool. (2) The surface flaw removing device for a strip according to claim 1, wherein the flaw removing tool is rotatable along the length of the strip. (3) The apparatus for removing surface flaws on a strip according to claim 1, wherein the guide rail portion is configured to go around the strip once.