KR20200070747A - Laser beam checking device - Google Patents

Abstract

Provided is a laser beam checking device for refining a magnetic domain of an oriented electrical steel plate, capable of arranging a mirror or a laser beam in a facility or measuring a state thereof to remarkably shorten pre-inspection time of the facility in a steel plate online state, where the steel plate is not removed from a support roll, and to eventually enhance workability in refining the magnetic domain of the oriented electrical steel plate. According to the present invention, the laser beam checking device comprises: a device body means interlinked with a laser beam irradiation device; a device moving means provided in the device body means to be able to move; and a target sheet mounting means interlinked with the device moving means while allowing the target sheet, irradiated with the laser beam generated by the laser beam irradiation device, to be mounted thereon.

Description

Laser beam checker {LASER BEAM CHECKING DEVICE}

The present invention relates to a laser beam check device, and more specifically, to facilitate the alignment or condition check of a mirror or laser beam, dramatically shortening the facility inspection time, and ultimately improving the magnetic refining operation of the oriented electrical steel sheet. It relates to a laser beam check device.

As the demand for high quality steel sheet is increasing, technology to process the surface of the steel sheet is being studied. For example, to reduce power loss and improve efficiency of electric devices such as transformers, magnetic properties with low iron loss and high magnetic flux density are improved. And grain-oriented electrical steel.

Such a grain-oriented electrical steel sheet reduces the iron loss by minimizing the magnetic domain in the direction perpendicular to the rolling direction by irradiating a mechanical method or a laser beam on the surface of the steel sheet, depending on whether or not the effect of improving the magnetic domain refinement is maintained after stress annealing. It can be divided into self-refining and permanent self-refining.

The temporary magnetic domain refinement method forms a local compressive stress part on the surface of the steel sheet to refine the magnetic domain, and the permanent magnetic domain refinement method can maintain the effect of improving iron loss even after heat treatment, and the technology based on the etching method, roll method, or laser method Is being used.

On the other hand, the method of permanent magnetic domain refinement using a laser is to refine the magnetic domain by forming molten grooves on the surface of the steel sheet by irradiating a laser beam on the surface of the steel sheet while adjusting the tension of the steel sheet.

However, when using a laser beam, there is an advantage that the groove can be quickly processed on the surface of the steel sheet, but in order to use a laser (laser beam), precise pre-inspection and management of the equipment are required.

For example, in order to accurately collect the energy of the laser beam in a Gaussian mode, it is necessary to align the laser beam and the optical element (mirror) well in advance, and it is also essential when the laser and the mirror are replaced.

Due to such contamination of the laser and the mirror, the distortion of the laser beam can easily appear, and the alignment or condition of the mirror or laser beam is checked before the magnetic domain refinement of the steel sheet.

On the other hand, after removing the steel sheet from the support roll supporting the steel sheet transport at the bottom of the facility, the target sheet (Burn Paper Target), which is a beam test sheet that can check the characteristics of the laser beam, is placed on the spot, and the laser is output at low power. Was checked to check the beam condition.

By the way, it is necessary to change the position of the target sheet as described above because it is necessary to irradiate the laser beam several times while changing the position of the mirror, and there is a need to change the position of the target sheet as described above. , Attach a target sheet on it, and irradiate the laser beam to measure the alignment or condition of the laser beam.

After all, in the conventional case, a large moving mechanism was placed on a support roll, and the alignment or measurement of the laser beam was possible only by removing the steel sheet from the support roll in advance.

In this case, after stopping the entire process, the steel plate is removed (bypass), and then the alignment or condition of the laser beam is checked, so the steel plate is removed from the support roll, and after the laser beam alignment, the steel plate is returned to the normal path. It took only a considerable period of time (at least a week or more), resulting in significant losses in the overall process.

Accordingly, there has been a demand for a technology that enables the steel sheet to be online while not removing the steel sheet from the support roll during alignment or state check (measurement) of the mirror or laser beam for magnetic domain refinement of the grain-oriented electrical steel sheet.

On the other hand, KR 10-2015-0000927 A (2015.01.06) discloses a magnetic domain refinement technology of a grain-oriented electrical steel sheet, but is not related to the required technology.

KR 10-2015-0000927 A (2015.01.06)

The present invention has been devised to solve the above-described conventional problems, and its purpose is to facilitate alignment or state measurement of mirrors or laser beams, dramatically shortening the pre-inspection time of equipment, and ultimately, of directional electrical steel sheets. It is to provide a laser beam check device to improve the self-refining operation.

As a technical aspect for achieving the above object, the laser beam checking apparatus of the present invention includes: device body means associated with a laser beam irradiation device; and device moving means provided movably on the device body means; And a target sheet mounting means connected to the device moving means, on which a target sheet to which the laser beam generated by the laser beam irradiation device is irradiated is mounted.

Preferably, the device body means may include a pair of device bodies connected to the laser beam irradiation device.

More preferably, the device moving means includes: a base plate provided between a pair of device bodies provided in the device body means; and an LG guide provided on the base plate; And, it may be configured to include; a moving block mounted on the LG Guide.

More preferably, the target seat mounting means includes: a horizontal stand and a vertical stand assembled to a moving block provided in the device moving means; And a sheet mounting member which is horizontally assembled to the vertical object and to which the target sheet is attached.

More preferably, the vertical stand may be configured to enable height adjustment of the device, including first and second vertical stands provided so as to be spaced apart from each other via a fastening means.

More preferably, it may further include a seat fixing means provided to detachably fix the target sheet to the seat mounting member.

More preferably, the seat fixing means may be provided as a plate bending structure in which the target sheet is fitted and fixed while being assembled to the sheet mounting member, and an upper surface is formed with an opening through which a laser beam passes.

More preferably, the laser beam irradiation device is provided as a facility for the magnetic domain refinement of the directional electrical steel sheet, and the device body provided in the device body means is connected to the dumper between the polygon mirror and the focus mirror of the laser beam irradiation device Can be.

According to the present invention, for example, for the self-refining of the grain-oriented electrical steel sheet, in the support roll for transporting the steel sheet to which the laser beam is irradiated, the alignment of the mirror or the laser beam in the steel sheet online state without removing the steel sheet as before Or provides an effect that enables status checking.

Accordingly, the present invention can significantly shorten the time required for aligning or checking the state of the mirror or laser beam, thereby improving workability and ultimately improving the operability of the magnetic domain refinement process of the grain-oriented electrical steel sheet. Will provide

1 is a process state diagram showing the magnetic domain refining process of the grain-oriented electrical steel sheet according to the present invention
2 is an overall configuration diagram showing a laser beam irradiation apparatus and a conventional laser beam check state, which are self-refining facilities of a grain-oriented electrical steel sheet.
Figure 3 is a process state diagram showing the bypass state of the steel sheet from the support roll when checking the existing laser beam based on Figure 2
FIG. 4 is an overall configuration diagram showing a state of using a laser beam irradiation device which is a magnetic domain refinement facility of the directional electrical steel sheet of FIG. 2 and a laser beam checking device according to the present invention.
5 is a perspective view showing a laser beam check device according to the present invention shown in FIG.
Figure 6 is a plan view of Figure 5
7 is a perspective view showing another embodiment of the apparatus of the present invention of FIG.
8 is a side view of FIG. 7
9 is a schematic view showing a state in which the device of the present invention of FIG. 5 is mounted on a dumper of a laser beam irradiation device which is a magnetic domain refinement facility of a grain-oriented electrical steel sheet.
10 is a photograph showing a target sheet irradiated with a laser beam checked using the apparatus of the present invention

Hereinafter, the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known structures or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

First, FIG. 1 shows a (permanent) magnetic domain refinement process of a grain-oriented electrical steel sheet based on a laser according to the present invention in a process state diagram.

For example, as shown in FIG. 1, the steel sheet 10 passes through the steering rolls (SRs) 20 to change its transfer direction, and then tension bridle rolls (TBR) 30 ), tension is applied.

Thereafter, the steel sheet 10 is a support roll 40 disposed directly under the laser beam irradiation apparatus 100 which is a magnetic domain refinement facility of a grain-oriented electrical steel sheet and a deflector roll 50 on both sides thereof. While passing through, the laser beam L is irradiated to the surface of the steel sheet 10 in a state in which tension is maintained, and then passes through the steering rolls (SRs) 20 and the transfer rolls 80 again. As the direction changes, it is transferred to the clean facility 60.

At this time, between the deflector roll and the exit stinger roll, a hill up formed on the surface of the steel sheet 10 (the part formed by stacking iron melted in the steel plate to a certain height or more on both sides of the groove portion) and spatter ( spatter) (a brush roll 70, which is a post-treatment facility for removing the molten iron generated on irradiation of the laser beam and solidified on the surface of the steel sheet) may be disposed.

Next, FIG. 2 shows a laser beam irradiation apparatus 100 which is a magnetic domain refinement facility of the oriented electrical steel sheet shown in FIG. 1.

That is, as shown in Figure 2, the laser beam irradiation apparatus 100 for the magnetic domain refinement of the grain-oriented electrical steel sheet, the laser beam (L) generated by the laser 110 and the quartz block (Quartz Block) 120 A polygon mirror driven by a motor 160 on a module plate 150 via a composite head 130 and a laser beam line 140 ) 170, the irradiation path is switched.

In addition, the laser beam L passing through the polygon mirror 160 passes through a dumper 180 on a module plate, and a focusing mirror 190 that moves into a moving unit 192. Finally, the vertically converted laser beam L is irradiated on the steel sheet 10 passing through the support roll 40, as shown in FIGS.

However, as described above, in the process of machining the grooves in the steel sheet 10 with the laser beam L, the distortion of the laser beam occurs due to the replacement of the laser and the mirror or their contamination, so that the actual grain-oriented electrical steel sheet Before the irradiation of the laser beam for miniaturization of the first, the operation of checking the alignment or state of the focus mirror 190 and the laser beam L must be preceded.

On the other hand, Figure 2 schematically shows the check operation of the laser beam for magnetic domain refinement of the existing grain-oriented electrical steel sheet.

That is, as shown in FIG. 2, a moving mechanism (Moving Base) moving on the support roll 40 to a position where the laser beam L that has passed through the focal mirror 190 of the laser beam irradiation apparatus 100 is irradiated ( 210), and place a target sheet (Burn Paper Target) 200 (see FIG. 10) on which the laser beam L is irradiated, and irradiate the laser beam with low power to check the alignment or state of the laser beam. .

At this time, the laser beam is irradiated several times while changing the position of the focal mirror 190 several times, so that the target sheet 200 is placed on the moving mechanism 210 capable of adjusting its position, and irradiated with multiple laser beams This is to check the alignment and condition of the laser beam.

However, although the moving mechanism 210 is schematically illustrated in the drawings, the actual size associated with the controller is 1000 mm or more, and is placed and placed on the support roll 40, so that it is position-controlled, so the steel sheet 10 is inevitable in the support roll 40. It is only possible to check the alignment or condition of the laser beam by removing the.

In addition, the irradiation distance of the laser beam L irradiated in the magnetic domain refinement process of the actual grain-oriented electrical steel sheet is approximately 400 mm, and the distance between the laser beam irradiation apparatus 100 and the support roll 40 being elevated is also narrow.

Therefore, when checking the existing laser beam, since it is necessary to remove the steel sheet 10 from the support roll 40, it is difficult to maintain the steel sheet alignment.

Accordingly, referring to FIG. 1, as shown in FIG. 3, when aligning or checking an existing mirror or laser beam, the steel sheet 10 passes through the input steering roll 20 and the tension bridle rolls 30 to support rolls ( It did not enter the Support Roll (40), and was bypassed through the transfer rolls 80 (see the arrow below the tension bridle roll 30).

After all, as in FIGS. 2 and 3, in the case of the conventional method, after stopping the entire process described in FIG. 1 and then bypassing the steel plate 10 from the support roll 40, the alignment or state of the laser beam is checked. Since it is checked, it takes at least a week or more to remove the steel sheet 10 from the support roll 40, check the laser beam, and then return the steel sheet 10 back to the normal path of FIG. 1, resulting in significant loss in the overall process This is what happens.

Thus, the laser beam check apparatus 200 according to the present invention described below, the problem in the case of based on the moving mechanism 210 on which the existing support trolley 40 and the target sheet 200 as shown in FIG. It is to solve them.

Therefore, hereinafter, the laser beam checking apparatus 300 according to the present invention will be described in detail.

However, in the following description of the present embodiment, the laser beam checking apparatus 300 of the present invention may be a facility for magnetic domain refinement of a directional electrical steel sheet, and is used for checking the laser beam irradiated from the laser beam irradiation apparatus 100 It will be described as being limited.

However, it is natural that the laser beam checking apparatus 300 of the present invention is not limited to only checking the laser beam irradiated from the laser beam irradiation apparatus 100 for permanent magnetic refinement of the oriented electrical steel sheet.

For example, there will be no problem in applying the laser beam check apparatus 300 of the present invention to other facilities or fields based on a laser beam.

First, FIG. 4 shows a state in which the laser beam checking apparatus 300 according to the present invention is used in connection with the laser beam irradiation apparatus 100 described in FIG. 2, and in FIGS. 5 to 8, the laser beam of the present invention 9, the laser beam checker 300 of the present invention shows the assembled state of the dumper 180 of the laser beam irradiation apparatus 100, and FIG. 10 shows a laser beam checker of the present invention. The target sheet 200 is shown in a photograph.

However, in the following description of the present embodiment, description of the basic operation of the laser beam irradiation apparatus 100 described in FIG. 2 is brief.

Next, referring to FIGS. 4 and 9, and as shown in FIGS. 5 and 6, the laser beam checking apparatus 300 of the present invention irradiates a laser beam for magnetic domain refinement of a grain-oriented electrical steel sheet as an example described in FIG. 2. The device body means 310 linked to the device 100, the device moving means 330 provided movably on the device body means 310, and the device moving means 330 are connected to the irradiation device ( It may be configured to include a target sheet mounting means 350 on which the target sheet 200 to which the laser beam L generated in 100) is irradiated is mounted.

More specifically, as shown in FIGS. 4 and 9, the device body means 310 is a dumper 180 between the polygon mirror 170 and the focus mirror 190 of the magnetic domain refinement facility 100 of the directional electrical steel sheet. It may include a pair of device bodies 312 assembled to.

Therefore, the pair of device bodies 312 facing each other of the laser beam checker 300 of the present invention is provided with an assembly bolt B passing through the bolt hole H provided in the dumper 180 (not shown) Si), it can be simply assembled on the dumper 180.

Next, as shown in FIGS. 4 to 6 and 9, the device moving means 330 is connected between the pair of opposing device bodies 312 connected to the dumper 180 of the laser beam irradiation device 100. It may include a base plate 332, an LM guide 334 provided on the base plate 332, and a moving block 336 mounted on the LM guide 334.

Therefore, on the base plate 332 horizontally fixed between the device bodies 312 assembled to the dumper 180, the moving block 336 is horizontally along the L guide 334 in the width direction of the steel plate 10 (of the irradiation device In the width direction), it can be precisely horizontally moved during operation.

At this time, the moving block 336 may be moved by the operator's operation, or although not specifically illustrated in the drawings, a small air cylinder or a ball screw operated by a motor or a driving gear is linked, and without manual operation, mechanically It will also be possible to move horizontally along the EL guide 334.

Next, as shown in FIGS. 4 to 6 and 9, the target sheet mounting means 350 is vertically and horizontally connected to the moving block 336 of the device moving means 330 via bolts B. The seating member to which the target sheet 200 (Burn Paper Target) to which the laser beam L is irradiated while being horizontally assembled on the horizontal stand 352 and the vertical stand 354 and the vertical stand 354 to be assembled is bonded. 356.

Therefore, as shown in Figure 9, the horizontal beam 352 assembled horizontally as a bolt (B) to the moving block 336 of the device moving means 330 in the laser beam check device 300 of the present invention as shown in Figure 9 , Vertically stretched horizontally in the dumper 180 and assembled as a bolt (B) perpendicular to the horizontal stand 352, vertically in the opening 182 of the dumper 180, the focus mirror ( 190) to extend in the same direction as the vertically irradiated laser beam (L).

And, as shown in Figures 4 to 6 and 9, since the sheet mounting member 356 is horizontally assembled to the lower end of the vertical stand 354, the sheet mounting member 356 is a direction in which the laser beam (L) is irradiated It is located orthogonally to.

After all, the target sheet 200 adhered to the sheet mounting member 356, through the operation of the laser beam checking apparatus 300 of the present invention as shown in FIG. When L) is irradiated to the target sheet 200, a trace (flame trace) is formed, and through this, alignment or a laser state of a mirror or a laser beam can be checked.

Therefore, in the conventionally described in FIG. 2, the moving mechanism 210 is mounted on the support roll 40, and the alignment or state of the beam is checked by irradiating the laser beam L on the target sheet 200, thereby supporting roll In (40), as shown in FIG. 3, the steel sheet 10 was removed and bypassed, but as shown in FIG. 4, in the present invention, in the online environment in which the steel sheet 10 is not removed regardless of the support roll 40 , It is possible to easily grasp or align the state of the laser beam through the device 300 of the present invention.

As a result, in the present invention, a considerable period of time required for laser beam alignment, which is conventionally required for steel sheet bypass, can be significantly reduced.

Moreover, since it is connected to the laser beam irradiation apparatus 100 (a dumper 180 of the magnetic domain refinement facility of the existing grain-oriented electrical steel), it is easy to use, and is irradiated to the target sheet 200 by simple manual operation or mechanical operation. It is also very easy to change the position of the laser beam.

Next, FIGS. 7 and 8 show another embodiment of the laser beam checker 300 according to the present invention.

That is, as illustrated in FIGS. 7 and 8, in the laser beam checking apparatus 300 of the present invention, the vertical stand 354 is provided with a fastening means 360 to adjust the distance between each other. ,2 can be composed of a vertical stand (354a) (354b).

For example, the fastening means 360 is provided in the first vertical stand 354a and is provided with holes 364 formed in the insertion portion 362, and the second vertical stand 354b is formed in the insertion portion It may be composed of a hollow portion 366 in which the bolt holes 368 are inserted but through which the bolts B are fitted. And, the bolt (B) can be fastened as a nut (N).

Therefore, as shown in FIGS. 7 and 8, in the laser beam checker 300 according to the present invention, the overall height adjustment of the device may be provided through the first and second vertical bands 354a and 354b.

In addition, the laser beam checking apparatus 300 of the present invention, as shown in FIGS. 7 and 8, further comprises a seat fixing means 370 provided to detachably fix the target sheet 200 to the seat mounting member 358. It can contain.

At this time, the seat fixing means 370, while being assembled to the mounting member 358, the target sheet 200 is fitted, the upper surface is a plate bending structure having an opening 372 through which the laser beam L passes. Can be provided.

Therefore, as shown in FIG. 8, without attaching the target sheet 200 to the probe member 358 of the device of the present invention with an adhesive, it is sandwiched between the sheet fixing means 370 and the probe member 358, which are the plate bending structures. In the fixed state, the laser beams L are irradiated in the longitudinal direction to align the laser beam or grasp the beam state, and when the alignment or grasp is completed, the sheet fixing means 370 can be easily taken out and separated.

Accordingly, in the case of the laser beam checker 300 for magnetic domain refinement of the grain-oriented electrical steel sheet of the present invention described so far, it is not necessary to remove the steel sheet from the support roll that gives the tension to the steel sheet, and the mirror or laser in the steel sheet online state. This will enable beam alignment and condition checking.

As a result, the present invention enables to significantly shorten the alignment and condition check time of the laser beam, thereby improving workability and preventing worker safety accidents, and ultimately improving the productivity of the magnetic domain refinement process of the oriented electrical steel sheet. Will do.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present specification and drawings are not intended to limit the technical spirit of the present invention, but to explain the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the equivalent range should be interpreted as being included in the scope of the present invention.

10....steel plate 40....support roll
100....Laser beam irradiation device 170....Polygon mirror
180....Dumper 190....Focus mirror
200.... Target sheet with laser beam irradiation (Burn Paper Target)
300....Laser beam check device of the present invention
310....Device body means 312....Device body
330....Device transport 332....Base plate
334.... LM Guide 336....Moving Block
350.... Target seat mounting means 352....
354.... Vertical stand 356.... Seat mounting member
360.... Fastening means 370.... Seat fixing means

Claims (8)

A device body means associated with the laser beam irradiation device;
A device moving means provided movably on the device body means; And,
A target sheet mounting means connected to the device moving means, on which a target sheet to which a laser beam generated by the laser beam irradiation device is irradiated is mounted;
Laser beam check device configured to include.
According to claim 1,
The device body means includes a pair of device bodies connected to the laser beam irradiation device;
Laser beam check device comprising a.
According to claim 1,
The device moving means includes: a base plate provided between a pair of device bodies provided in the device body means;
LM guide provided on the base plate; And,
A moving block mounted on the EL guide;
Laser beam check device configured to include. According to claim 1,
The target seat mounting means includes: a horizontal stand and a vertical stand assembled to a moving block provided in the device moving means; And,
A seat mounting member which is horizontally assembled to the vertical object and to which the target sheet is attached;
Laser beam check device configured to include.
The method of claim 4,
The vertical stand, the first and second vertical stand provided so as to be spaced apart from each other via a fastening means;
Further comprising a laser beam check device configured to enable the height adjustment of the device.
The method of claim 4,
A seat fixing means provided to detachably fix a target sheet to the seat mounting member;
Laser beam check device further comprising a.
The method of claim 6,
The sheet fixing means, the laser beam check device provided as a plate bending structure in which the target sheet is fitted and fixed while being assembled to the sheet mounting member, and an opening through which a laser beam passes is formed.
The method according to any one of claims 1 to 7,
The laser beam irradiation device is provided as a facility for the magnetic domain refinement of the grain-oriented electrical steel sheet,
The device body provided in the device body means is a laser beam check device linked to a dumper between a polygon mirror and a focus mirror provided in the laser beam irradiation device.

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