Laser cutting equipment

Abstract

The present invention relates to laser cutting equipment, and to the following laser cutting equipment, which can prevent spatter generated in the process of cutting a product from splashing onto the product and contaminating the product, or prevent spatter from entering a product such as a battery box, thereby causing defects in the product. The laser cutting equipment according to the present invention includes: a lower clamp for supporting the lower part of one side of the cutting area of ​​the object to be laser cut; an upper clamp for supporting the upper part of one side of the cutting area of ​​the object to be laser cut; a laser nozzle for irradiating a laser toward the cutting area of ​​the object to be laser cut; and a spatter block clamp, which is arranged between the main body of the object to be laser cut and the cutting area. Therefore, it is possible to prevent spatter generated in the process of cutting a product from splashing onto the product and contaminating the product, or prevent spatter from entering a product such as a battery box, thereby causing defects in the product.

Description

Technical Field

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0101389, filed on August 12, 2020, which is hereby incorporated by reference herein in its entirety. Technical Field

[0004] The present invention relates to a laser cutting device that can prevent splashes that occur during the cutting of a product such as a battery box using a laser beam from splashing onto the product to contaminate the product, or prevent splashes from being introduced into a product such as a battery box to cause product defects. Background Art

[0005] Laser cutting of products such as battery boxes means cutting the product by applying the output of a laser beam. However, laser cutting means cutting the product according to the designed shape using a laser beam.

[0006] In the field of secondary batteries, research is underway to convert existing battery cells manufactured in pouch form into thin metal packages or metal cases, necessitating new manufacturing processes. Stamping dies are used to cut products such as metal packages and metal cases, but this presents challenges in processing complex shapes and in thin products, which can damage them. Consequently, laser cutting is being used to cut products such as thin metal packages and metal cases.

[0007] However, even in the case of laser cutting, there are problems in that spatter, which is metal fragments of the product melted by the laser beam in the cutting area, splashes onto the product, causing the product to be contaminated and thus requiring a further cleaning process, and in severe cases, spatter splashes into the product, causing product defects.

[0008] Reference Figure 1 , shows a laser beam I emitted from a laser nozzle N cutting a cutting region D-2 of a laser-cut object D. Laser-cut object D may be a thin metal battery case. In this case, spatter S, which is metallic foreign matter generated in cutting region D-2, may splash onto the main body D-1 of laser-cut object D, causing product contamination or defects. Region A is shown in a state where spatter S splashes onto the main body D-1 of laser-cut object D, causing product contamination. Numerous studies have been conducted to address this issue in laser cutting. Summary of the Invention

[0009] Technical issues

[0010] The present invention is invented to solve the above-mentioned problems, and the purpose of the present invention is to provide a laser cutting device that can prevent splashes that occur during the cutting of products such as battery boxes using a laser beam from splashing onto the product and contaminating the product, or prevent splashes from being introduced into products such as battery boxes and causing product defects.

[0011] Technical Solutions

[0012] According to the laser cutting equipment of the present invention, it includes: a lower clamp, which is configured to support the lower part of one side of the cutting area of ​​the laser cutting object; an upper clamp, which is configured to support the upper part of one side of the cutting area of ​​the laser cutting object; a laser nozzle, which is configured to emit a laser beam toward the cutting area of ​​the laser cutting object; and a spatter block clamp, which is arranged between the main body of the laser cutting object and the cutting area.

[0013] The lower clamp may include a lower recess for inserting the main body of the laser cutting object and the spatter block clamp, the spatter block clamp may have an inner recess area and be placed inside the lower recess of the lower clamp while accommodating the main body of the laser cutting object in the inner recess area; the upper clamp may cover the lower clamp and, together with the lower clamp, support the upper and lower parts of one side of the cutting area of ​​the laser cutting object to fix the laser cutting object; and the circumferential wall of the spatter block clamp forming the periphery of the inner recess area of ​​the spatter block clamp may be arranged between the main body of the laser cutting object and the cutting area.

[0014] The circumferential wall of the spatter block jig can block spatter (metal foreign matter) that flies toward the main body portion of the laser-cut object in the cutting area during cutting performed using the laser beam.

[0015] The circumferential wall of the spatter block jig may be disposed below the cutting area, and an upper portion of the circumferential wall of the spatter block jig may be formed in an upwardly tapered shape.

[0016] A circumferential wall of the lower clamp forming a periphery of the lower recess of the lower clamp may be spaced apart from a circumferential wall of the splash block clamp with the cutting area interposed therebetween.

[0017] The portion forming the periphery of the upper jig may have a right triangle-shaped cross section, and the portion forming the periphery of the lower jig may have a quadrilateral-shaped cross section.

[0018] The laser cutting object may be an L-shaped metal battery box, and the spatter block fixture may have an L-shaped inner recessed area.

[0019] A cutting area may be formed in the edge of the L-shaped metal battery case, and the upper and lower clamps may hold the portion disposed outside the cutting area in the edge by vertically pressing the portion.

[0020] The lower jig and the upper jig may respectively have lower and upper screw holes on circumferential areas provided on the periphery of the position where the laser object is placed, and the upper and lower jigs may be screwed together through the upper and lower screw holes to fix the laser cutting object.

[0021] A splash discharge hole may be formed in a portion below the cutting area provided in the lower recess of the lower jig.

[0022] The spatter discharge hole may extend in a direction in which the cutting area extends, and may be formed in plural.

[0023] Beneficial effects

[0024] According to an embodiment of the present invention, the laser cutting equipment may include: a lower clamp for supporting the lower part of one side of the cutting area of ​​the laser cutting object; an upper clamp for supporting the upper part of one side of the cutting area of ​​the laser cutting object; a laser nozzle configured to emit a laser beam toward the cutting area of ​​the laser cutting object; and a spatter block clamp, which is arranged between the main body of the laser cutting object and the cutting area, and thereby can prevent spatters that occur during the cutting of a product such as a battery box using a laser beam from splashing onto the product and contaminating the product, or prevent spatters from being introduced into a product such as a battery box and causing defects in the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a side view showing a state in which laser cutting is performed using a laser cutting apparatus according to the related art.

[0026] Figure 2 : is a side view showing a state where cutting is performed using a laser beam by the laser cutting apparatus according to Embodiment 1 of the present invention.

[0027] Figure 3 This is a perspective view showing a lower jig in a laser cutting apparatus according to a second embodiment of the present invention.

[0028] Figure 4 This is a perspective view showing a spatter block fixture in a laser cutting apparatus according to a second embodiment of the present invention.

[0029] Figure 5 This is a perspective view showing an upper jig in a laser cutting apparatus according to a second embodiment of the present invention.

[0030] Figure 61 is a perspective view showing a state in which a spatter block jig is inserted into a lower recess of a lower jig in the laser cutting apparatus according to Embodiment 2 of the present invention.

[0031] Figure 7 It is shown in Figure 6 A stereoscopic view of a state in which the upper clamp is coupled to the lower clamp in the view of FIG.

[0032] Figure 8 is a perspective view showing a laser cutting object to be cut by the laser cutting apparatus according to Embodiment 2 of the present invention.

[0033] Figure 9 is a side sectional view showing a state in which cutting is performed using a laser beam by the laser cutting apparatus according to Embodiment 2 of the present invention.

[0034] Figure 10 This is a perspective view showing a state where a product has been cut by the laser cutting apparatus according to Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0035] Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in such a manner that a person skilled in the art can easily implement the technical ideas of the present invention. However, the present invention can be implemented in different forms and is not limited to or restricted to the following embodiments.

[0036] Parts that are not relevant to the description or detailed description of related technologies that may unnecessarily obscure the main purpose of the present invention will be omitted to clearly describe the present invention, and when figure numerals are added to components of the drawings in this specification, the same or similar figure numerals are attached to the same or similar components throughout the specification.

[0037] Furthermore, the terms or words used in the present specification and claims should not be restrictively interpreted as ordinary meanings or dictionary-based meanings, but should be interpreted as meanings and concepts consistent with the scope of the present invention based on the principle that the inventor can appropriately define the concepts of the terms in order to best describe and explain his or her invention.

[0038] Implementation Method 1

[0039] Figure 2 : is a side view showing a state where cutting is performed using a laser beam by the laser cutting apparatus according to Embodiment 1 of the present invention.

[0040] Reference Figure 2The laser cutting apparatus 10 according to Embodiment 1 of the present invention may include a lower jig 11, an upper jig 13, a laser nozzle 15, and a spatter block jig 17. The lower jig 11 and the upper jig 13 may be used to support and secure the laser-cut object D. If the lower jig 11 and the upper jig 13 were not present, the object may shake while being cut using the laser beam I, and if the object shakes like this, the cutting may not be performed according to the desired design. Therefore, the lower jig 11 and the upper jig 13 may secure the object to prevent the above-mentioned problem.

[0041] The lower jig 11 may be used to support a lower portion of one side of a cutting region D- 2 of the laser-cut object D. The upper jig 13 may be used to support an upper portion of one side of a cutting region D- 2 of the laser-cut object D.

[0042] The laser nozzle 15 may be disposed above the cutting area D-2 and may emit the laser beam I from top to bottom, ie, toward the cutting area D-2 of the laser cutting object D, to cut the cutting area D-2 of the object.

[0043] In this case, the laser cutting object D may include a main body portion D-1 and a cutting area D-2 extending from the main body portion D-1. When the cutting area D-2 is cut, only the main body portion D-1 may remain as a product to be used.

[0044] The laser cutting apparatus 10 according to Embodiment 1 of the present invention may include a spatter block fixture 17 provided between the main body portion D- 1 of the laser-cut object D and the cutting region D- 2 .

[0045] When cutting is performed in the cutting area D-2 by emitting a laser beam I, splashes S, which are metal fragments of the product melted by the laser beam I in the cutting area D-2, splash onto the product (the main body in the present invention) and causes the product to be contaminated. The present invention includes a splash block fixture 17 as a component that prevents the splash S from splashing like this.

[0046] When the spatter S splashes onto the laser-cut object D, product contamination may occur, and when the spatter S splashes into the product, product defects may occur. The spatter block fixture 17 can be set between the cutting area D-2 and the laser-cut object D to prevent the spatter S from splashing onto the laser-cut object D. The spatter block fixture 17 can be particularly set between the cutting area D-2 and the main body D-1 of the laser-cut object D to prevent the spatter S from accumulating on the main body D-1 of the laser-cut object D. In this way, the laser cutting equipment 10 according to embodiment 1 of the present invention can prevent product contamination or defects caused by cutting using the laser beam I.

[0047] Reference Figure 2In the laser cutting apparatus 10 according to embodiment 1 of the present invention, the portion forming the periphery of the upper jig 13 may have a right triangle shaped cross section, and the portion forming the periphery of the lower jig 11 may have a quadrilateral shaped cross section.

[0048] The cross-section of the portion forming the periphery of the upper jig 13 may have a right triangle shape, and be positioned so that the hypotenuse 131 of the upper jig faces the laser nozzle 15. In this case, since the space in which the laser nozzle 15 and the laser beam 1 can be placed is expanded, cutting using the laser beam can be easily performed, and this can have a great advantage in moving to various directions and positions to form complex shapes. When the portion forming the periphery of the lower jig 11 has a quadrilateral cross-section, the top surface of the lower jig 11 can have a flat shape and the bottom surface of the lower jig 11 can also have a flat shape, and therefore this can give the lower jig 11 a great advantage in stably fixing and maintaining the object in the lower portion.

[0049] In addition, in the laser cutting apparatus 10 according to Embodiment 1 of the present invention, the spatter block fixture 17 may be provided below the cutting region D-2, and the upper portion of the spatter block fixture 17 may be formed in an upwardly tapered shape. In this case, the width of the spatter block fixture 17 decreases as it advances toward the cutting region D-2, and thus this shape has the advantage of allowing a large amount of space in the cutting region D-2.

[0050] Implementation Method 2

[0051] Figure 3 1 is a perspective view showing the lower jig 110 in the laser cutting apparatus 100 according to the second embodiment of the present invention. Figure 4 1 is a perspective view showing a spatter block jig 170 in the laser cutting apparatus 100 according to Embodiment 2 of the present invention. Figure 5 1 is a perspective view showing the upper jig 130 in the laser cutting apparatus 100 according to the second embodiment of the present invention. Figure 6 1 is a perspective view showing a state in which the spatter block jig 170 is inserted into the lower recess 111 of the lower jig 110 in the laser cutting apparatus 100 according to Embodiment 2 of the present invention. Figure 7 It is shown in Figure 6 A perspective view of a state in which the upper jig 130 is coupled to the lower jig 110 in FIG. Figure 8 : is a perspective view showing a laser cutting object D to be cut using the laser cutting apparatus 100 according to Embodiment 2 of the present invention. Figure 9 1 is a side sectional view showing a state in which cutting is performed using the laser beam 1 by the laser cutting apparatus 100 according to Embodiment 2 of the present invention. Figure 101 is a perspective view showing a state where a product has been cut by the laser cutting apparatus 100 according to the second embodiment of the present invention.

[0052] In Embodiment 2 of the present invention, the laser cutting object D may be an L-shaped metal battery box, and a difference from Embodiment 1 may be that the laser cutting apparatus 100 may have a shape for cutting such an L-shaped free form.

[0053] If possible, features common to Embodiment 1 will be omitted, and Embodiment 2 will be described focusing mainly on the differences.

[0054] Reference Figure 3 , the lower clamp 110 may be made of metal. The lower clamp 110 may be provided with a lower recess 111 having a downwardly concave shape. The lower recess 111 may be formed in an L-shape so as to match the shape of the laser-cut object D. The lower recess 111 is L-shaped, but may have a rounded or curved portion in a portion thereof. The circumferential wall 112 of the lower clamp 110 may be formed in the periphery of the lower recess 111. A spatter discharge hole 114 may be formed outside the lower recess 111. Due to the spatter discharge hole 114, foreign matter, spatter S may be easily discharged and removed. A lower screw hole 113 for coupling with the upper clamp 130 may be formed in the lower clamp 110.

[0055] Reference Figure 4 , the block jig for the splash S may be formed in an L-shape corresponding to the shape of the lower recess 111. In addition, the block jig may have a shape similar to the lower recess 111 of the L-shaped lower jig 110. However, the block jig may have a size smaller than that of the lower recess 111 of the lower jig 110.

[0056] An inner recessed area 171 having a downwardly concave shape may be formed in the spatter block jig 170. The laser cutting object D may be an L-shaped metal battery case, and the spatter block jig 170 may have the L-shaped inner recessed area 171. A circumferential wall 172 of the spatter block jig forming the periphery of the inner recessed area 171 may be provided.

[0057] Reference Figure 5 , the upper jig 130 may have an L-shaped through-hole G formed in a region corresponding to the lower recess 111 of the lower jig 110. An upper screw hole 133 for coupling with the lower jig 110 may be formed at the periphery of the through-hole.

[0058] Figure 6The spatter block fixture 170 is shown inserted and placed in the lower recess 111 of the lower fixture 110. The circumferential wall 172 of the spatter block fixture and the circumferential wall 112 of the lower fixture 110 can be set at a predetermined distance. The cutting area D-2 of the laser-cut object D can be set within this predetermined distance area. The spatter block fixture 170 can be set so as not to protrude higher than the height of the lower recess 111 of the lower fixture 110.

[0059] Figure 7 is Figure 6 The upper jig 130 is placed in a state covering the lower jig 110. The shape of the spatter block jig 170 is visible when looking through the L-shaped through-hole formed in the upper jig 130. The upper jig 130 and the lower jig 110 can be screwed together by screws inserted into the upper screw holes 133 and the lower screw holes 113. This can stably fix the laser cutting object D.

[0060] Figure 8 A laser cutting object D is shown. The laser cutting object D may be a battery box made of SUS metal. The laser cutting object D may include a main body portion D-1 formed in an L-shape and an edge D-3 extending from the periphery of the main body portion D-1. The area closer to the main body portion D-1 in the edge D-3 may be a cutting area D-2. In addition to the cutting area D-2 in the edge D-3, the upper clamp 130 and the lower clamp 110 can fix the object so as not to shake by holding the edge D-3 located outside the cutting area D-2.

[0061] Figure 9 It is along Figure 7 , which shows a state in which cutting is performed using the laser beam I by the laser cutting device 100 according to the embodiment 2 of the present invention. However, for better understanding, Figure 7 shows a perspective view of the object D without laser cutting, and Figure 9 is a cross-sectional view showing a state in which an object D is cut by laser.

[0062] When the laser beam I emitted from the laser nozzle 150 is focused on the cutting area D-2 of the laser-cut object D, cutting using the laser beam I is performed. In the cutting area D-2, spatter S splashes downward, and in this case, it can be seen that the circumferential wall 172 of the spatter block fixture is used to block the splashing spatter, thereby protecting the laser-cut object D (particularly, protecting the main body portion). The circumferential wall 172 of the spatter block fixture can be set between the main body portion D-1 of the laser-cut object D and the cutting area D-2. In addition, the circumferential wall 172 of the spatter block fixture can be set between the main body portion D-1 of the laser-cut object D and the circumferential wall 112 of the lower fixture 110.

[0063] Specifically, refer to Figures 3 to 9 In the laser cutting apparatus 100 according to Embodiment 2 of the present invention, the lower fixture 110 may be provided with a lower recess 111. The lower recess 111 may be formed in a downwardly concave shape for inserting the main body D-1 of the laser cutting object D and the spatter block fixture 170.

[0064] The spatter block jig 170 may further include an inner recessed area 171 having a downwardly concave shape. The inner recessed area 171 of the spatter block jig may accommodate the main body D-1 of the laser-cut object D. While accommodating the main body D-1 of the laser-cut object D in the inner recessed area 171, the spatter block jig 170 may be placed in the lower recess 111 of the lower jig.

[0065] The upper clamp 130 can cover the lower clamp 110 and, together with the lower clamp 110, support the upper and lower parts of one side of the cutting area D-2 of the laser-cut object D to fix the laser-cut object D, and the circumferential wall 172 of the spatter block clamp that forms the periphery of the inner recessed area 171 of the spatter block clamp 170 can be set between the main body D-1 of the laser-cut object D and the cutting area D-2.

[0066] With this shape, the circumferential wall 172 of the spatter block fixture can block spatter S (metal foreign matter) flying toward the main body D-1 of the laser-cut object D in the cutting area D-2 during cutting using the laser beam I.

[0067] In the laser cutting apparatus 100 according to Embodiment 2 of the present invention, the circumferential wall 172 of the spatter block fixture may be disposed below the cutting region D-2, and the upper portion of the circumferential wall 172 of the spatter block fixture may be formed in an upwardly tapered shape. In this case, the width of the circumferential wall 172 of the spatter block fixture decreases as it advances toward the cutting region D-2, and thus this shape has the advantage of allowing a large amount of space in the cutting region D-2.

[0068] The circumferential wall 112 of the lower jig forming the periphery of the lower recess 111 of the lower jig 110 is separated from the circumferential wall 172 of the spatter block jig, with the cutting area D-2 interposed therebetween, and spatter S can be discharged through this spacing therebetween. These discharged spatters S can be discharged through the spatter discharge holes 114. That is, the spatter discharge holes 114 are formed in the portion below the cutting area D-2 in the lower recess 111 of the lower jig, and thus the spatter S can be easily removed. The spatter discharge holes 114 can extend in the direction in which the cutting area D-2 extends (that is, in the direction along the periphery of the lower recess), and can be formed in plurality. When a plurality of spatter discharge holes are formed over the entire area, spatter can be removed more smoothly.

[0069] The cross-section of the portion forming the periphery of the upper jig 130 may have a right triangle shape and be positioned so that the hypotenuse 131 of the upper jig faces the laser nozzle 150. In this case, since the space in which the laser nozzle 15 and the laser beam 1 can be placed is expanded, cutting using the laser beam 1 can be easily performed, and this can have a great advantage in terms of being able to move to various directions and positions to form complex shapes. When the portion forming the periphery of the lower jig 110 has a quadrilateral cross-section, the top surface of the lower jig 110 can have a flat shape and the bottom surface of the lower jig 110 can also have a flat shape, and thus this can give the lower jig 110 a great advantage in stably fixing and maintaining the object in the lower portion.

[0070] Reference Figure 9 When the laser cutting object D is an L-shaped metal battery box, the cutting area D-2 is formed on the edge D-3 of the L-shaped metal battery box, and the upper clamp 130 and the lower clamp 110 can hold the part set outside the cutting area D-2 in the edge D-3 by vertically pressing the part.

[0071] The lower clamp 110 and the upper clamp 130 may respectively have a lower screw hole 113 and an upper screw hole 133 in a circumferential area around the position of the object where the laser beam I is placed, and are threadedly connected through the upper screw hole 133 and the lower screw hole 113 to fix the laser cutting object D.

[0072] The significance of the laser cutting apparatus 100 according to Embodiment 2 of the present invention is that the laser cutting apparatus 100 can be configured in a wider variety of implementation forms compared to the laser cutting apparatus 100 according to Embodiment 1. In Embodiment 2 of the present invention, the laser cutting object D can be an L-shaped metal battery box, and therefore, the lower jig 110, the upper jig 130, and the spatter block jig 170 of the laser cutting apparatus 100 can have shapes suitable for cutting such an L-shaped free-form shape.

[0073] Therefore, the present invention can neatly perform cutting using the laser beam I by preventing spatter S while stably supporting various shapes including an L-shape.

[0074] Although the present invention has been described through specific embodiments and drawings, the present invention is not limited thereto, and those skilled in the art to which the present invention pertains may make various changes and modifications within the technical concept of the present invention and the equivalent scope of the appended claims.

[0075] [Explanation of Reference Signs]

[0076] 10,100: Laser cutting equipment

[0077] 11,110: Lower fixture

[0078] 111: concave part

[0079] 112: Circumferential wall of the lower fixture

[0080] 113: Lower screw hole

[0081] 114: Splash discharge hole

[0082] 13,130: Upper fixture

[0083] 131: Beveled edge of upper fixture

[0084] 133: Upper screw hole

[0085] 15,150: Laser nozzle

[0086] 17,170: Splash Block Fixture

[0087] 171: Concave area

[0088] 172: Circumferential wall of the splash block fixture

[0089] S: Splash

[0090] D: Laser cutting objects

[0091] D-1: Main body

[0092] D-2: Cutting area

[0093] D-3: Edge

[0094] I: Laser beam

Claims

1. A laser cutting device comprising: a lower fixture configured to support a lower portion of one side of a cutting area of ​​a laser-cut object; an upper fixture configured to support an upper portion of one side of a cutting area of ​​the laser-cut object; a laser nozzle configured to emit a laser beam toward a cutting area of ​​the laser-cut object; and a spatter block fixture disposed between the main body of the laser-cut object and the cutting area, wherein the lower fixture comprises a lower recess for inserting the main body of the laser cutting object and the spatter block fixture, The spatter block fixture has an inner recessed area and is placed inside the lower recess of the lower fixture while accommodating the main body of the laser-cut object in the inner recessed area, The upper jig covers the lower jig and supports the upper and lower portions of one side of the cutting area of ​​the laser cutting object together with the lower jig to fix the laser cutting object, and A circumferential wall of the spatter block fixture forming a perimeter of an inner recessed region of the spatter block fixture is disposed between the main body portion of the laser-cut object and the cutting region.

2. The laser cutting device according to claim 1, wherein: The circumferential wall of the spatter block fixture blocks spatter that flies toward a main body portion of the laser-cut object in the cutting region during cutting using the laser beam.

3. The laser cutting device according to claim 2, wherein: The splashing objects are metallic foreign matter.

4. The laser cutting device according to claim 2, wherein: The circumferential wall of the spatter block fixture is disposed below the cutting area, and An upper portion of a circumferential wall of the splash block fixture is formed in an upwardly tapered shape.

5. The laser cutting device according to claim 1, wherein: A circumferential wall of the lower jig forming a periphery of the lower recess of the lower jig is spaced apart from a circumferential wall of the splash block jig, wherein the cutting area is interposed between the circumferential wall of the lower jig and the circumferential wall of the splash block jig.

6. The laser cutting device according to claim 1, wherein: The portion forming the periphery of the upper clamp has a right triangle-shaped cross section, and Here, a portion forming the periphery of the lower clamp has a quadrilateral cross section.

7. The laser cutting device according to claim 1, wherein: The laser-cut object is an L-shaped metal battery box, and The splash block fixture has an L-shaped inner recessed area.

8. The laser cutting device according to claim 7, wherein: The cutting area is formed in the edge of the L-shaped metal battery box, and The upper jig and the lower jig hold the portion in the edge by vertically pressing the portion disposed outside the cutting area.

9. The laser cutting device according to claim 1, wherein: The lower jig and the upper jig have lower screw holes and upper screw holes, respectively, on circumferential areas provided on the periphery of a position where the laser cutting object is placed, and The upper clamp and the lower clamp are threadedly connected through the upper screw hole and the lower screw hole to fix the laser cutting object.

10. The laser cutting device according to claim 1, wherein: A splash discharge hole is formed in a portion below the cutting area in the lower recess of the lower jig.

11. The laser cutting device according to claim 10, wherein: The spatter discharge hole extends in a direction in which the cutting area extends, and is formed in plural.

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