JP2019076934A - Stand, cutting device and cutting method - Google Patents

Abstract

To prevent damage of a stand and welding of the stand and a workpiece even when the workpiece is cut by a laser cutting machine.SOLUTION: A stand 20 on which a workpiece 5 cut by a laser cutting machine 11 is mounted includes: a top plate 30 having an opening 31; and a plurality of blocks 40 arranged so as to block a part of the opening 31. The opening 31 extends in a first direction d1 along a plate surface of the top late 30. The plurality of blocks 40 are aligned in the first direction d1. At least two blocks 40 adjacent to each other in the first direction d1 have grooves 41 that are connected to each other in the first direction d1 in a state of being aligned in the first direction d1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cutting device provided with a table on which a workpiece to be cut by a laser cutting device is placed, a table and a laser cutting device, and a cutting method using the cutting device.

  A processing apparatus for processing a work such as a thin metal plate is widely used. The processing apparatus includes a table on which a work is placed and a processing machine that processes the work. As a stand on which a work is placed, there is known a stand in which a plurality of cells (voids) are defined on a plate having an opening, as described in Patent Document 1, for example. In Patent Document 1, each cell is bounded by a metal foil. The table described in Patent Document 1 can fix the work to the table by sucking the gas in each cell through the opening of the plate in a state where the work to be processed is placed. it can. Moreover, the stand described in Patent Document 1 is used together with a laser processing machine. The laser beam can be irradiated by a laser processing machine and the workpiece fixed to the table can be perforated.

JP 2002-283089 A

  By the way, a laser cutting machine may be used as a processing machine. When a table described in Patent Document 1 and a laser cutting machine are combined to form a laser cutting device, the work is cut across a plurality of cells. That is, when cutting the workpiece, the laser light is also irradiated to the metal foils that bound each cell. When the metal foil is irradiated with laser light, the metal foil may be damaged or the metal foil and the work may be welded. That is, the laser cutting machine may cause breakage of the table or welding of the table and the work.

  The present invention has been made in consideration of the above points, and is a table for supporting a work to be cut by a laser cutting machine, which is effective in breaking the table and welding the table and the work during laser cutting. Purpose is to provide a platform that can be prevented. Another object of the present invention is to provide a cutting apparatus including the table and a laser cutting machine, and a cutting method using the cutting apparatus.

The table of the present invention is a table on which a workpiece to be cut by a laser cutting machine is placed,
A top plate having an opening,
And a plurality of blocks arranged to close a part of the opening.
The opening extends in a first direction along a plate surface of the top plate,
The plurality of blocks are arranged in the first direction,
The at least two blocks adjacent to each other in the first direction have grooves connected to each other in the first direction in a state in which the blocks are aligned in the first direction.

  In the stand of the present invention, the block may be removable from the top plate.

In the table of the present invention,
And a frame supporting the top plate,
The top plate has a plurality of plate-like members that are detachable from the underframe,
The underframe may support the plate member movably in a second direction that is not parallel to the first direction.

  The stand of the present invention may further include a dust collection box covering the opening from the side opposite to the side on which the work of the top plate is placed.

  The stand of the present invention may further include a dust collector in communication with the dust collection box.

In the table of the present invention,
It further comprises a suction member having suction holes aligned on one side,
The adsorption member may be detachably provided in the groove.

The cutting device of the present invention is
With any of the platforms mentioned above
And a laser cutting machine for cutting the work.

The cutting method of the present invention is a cutting method using the above-described cutting apparatus,
Placing the workpiece such that the workpiece overlaps the groove;
Cutting the work along the groove by the laser cutting machine.

  According to the present invention, it is possible to prevent breakage of the table supporting the workpiece and welding of the table and the workpiece at the time of laser cutting of the workpiece.

FIG. 1 is a schematic cross-sectional view of a cutting device provided with a pedestal. FIG. 2 is a top view showing the stage on which the work is placed. FIG. 3 is a top view showing the table with the work removed. FIG. 4 is a top view showing a table from which a part of the top plate has been removed. FIG. 5 is a perspective view showing a part of the opening of the base in an enlarged manner. FIG. 6 is a perspective view showing a suction member disposed in the groove of the block. FIG. 7 is a cross-sectional view showing a state in which the suction member is disposed in the groove of the block.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of easy illustration and understanding, the scale, the dimensional ratio in the vertical and horizontal directions, etc. are appropriately changed from those of the actual one and exaggerated.

  Also, “plate surface (sheet surface)” refers to the planar direction of the plate-like member (sheet-like member) to be targeted when the plate-like (sheet-like) member to be targeted is viewed from the whole and on a large scale. Refers to the matching face.

  In addition, as used herein, the terms such as “parallel”, “orthogonal”, “identical”, values of length and angle, etc., which specify the shape and geometrical conditions and their degree, etc. Without being bound by the meaning, it shall be interpreted including the extent to which the same function can be expected.

  FIG. 1 is a schematic cross-sectional view of a cutting apparatus 10 provided with a platform 20 of the present invention. FIG. 2 is a top view showing the base 20 in a state in which the work 5 is placed, and FIG. 3 is a top view showing the base 20 in a state in which the work 5 is not placed.

  The work 5 is cut by the cutting device 10. In the example shown in FIGS. 1 and 2, the work 5 is a rectangular thin plate. For example, the work 5 is a thin metal plate such as a metal mask. However, the workpiece 5 may be of any shape and material as long as it can be cut by the cutting device 10. The dimensions of the work 5 are, for example, a thickness of 10 μm to 40 μm, a width of 2 cm to 70 cm, and a length of 50 cm to 200 cm. Further, as shown in FIG. 2, on the surface of the work 5, a cutting position indicator 5a indicating the position to be cut is provided. The workpiece 5 can be cut into a predetermined size by cutting along the cutting position display 5a. In the illustrated example, the cutting position indication 5a is a straight line. That is, the work 5 is cut along a straight line. However, the cutting position indication 5a is a curve, and the work 5 may be cut along the curve.

  The cutting device 10 is a device for cutting the work 5. As shown in FIG. 1, the cutting device 10 comprises a laser cutting machine 11 and a table 20. The work 5 can be cut by irradiating the work 5 placed on the table 20 with laser light from the laser cutting machine 11.

  The laser cutting machine 11 has a laser light source (not shown). The laser cutting machine 11 can perforate the workpiece 5 by emitting the laser beam oscillated from the laser light source and irradiating the workpiece 5 with the laser beam. By continuously changing the irradiation position of the laser beam, the workpiece 5 can be perforated linearly. That is, the workpiece 5 can be cut linearly. As an example, the laser cutting machine 11 causes the galvano mirror provided inside the laser cutting machine 11 to reflect the laser light oscillated from the laser light source and applies the laser light to the work 5. By operating the galvano mirror, the reflection direction of the laser beam can be changed, and the irradiation position of the laser beam to the work 5 can be continuously changed. However, the present invention is not limited to this example, and the irradiation position of the laser beam may be continuously changed by operating the laser cutting machine 11 itself.

  The work 20 to be cut by the laser cutting machine 11 is placed on the table 20. The table 20 has a function of fixing the placed work 5 and a function of suctioning dust generated when cutting the work 5. The table 20 includes a top plate 30 having an opening 31, a plurality of blocks 40 disposed in the opening 31, and a frame 50 for supporting the top plate 30. The table-top 30 forms the upper surface of the table 20, and the work 5 is placed on the table-top 30 so as to overlap the opening 31. Moreover, the stand 20 is provided with the dust collection box 60 arrange | positioned so that the opening part 31 may be covered from the downward direction, and the dust collector 70 which can attract | suck the atmosphere in the dust collection box 60. The table 20 is in contact with almost the entire surface of the work 5 in a state where the work 5 is placed. That is, the stand 20 supports the work 5 by the surface.

  Next, each component of the stand 20 will be described.

  The top plate 30 forms an upper surface of the table 20 and forms a surface on which the work 5 is placed. The top plate 30 extends in a first direction d1 along the plate surface and a second direction d2 which is not parallel to the first direction d1. In the illustrated example, the first direction d1 and the second direction d2 are orthogonal to each other. The dimension of the top plate 30 is larger than the dimension of the work 5 assumed to be placed. For example, the length of the top plate 30 in the first direction d1 is 50 cm to 80 cm, and the length in the second direction d2 is 50 cm to 200 cm.

  The top plate 30 has a plurality of plate-like members 30a. That is, the top plate 30 is formed of a plurality of plate members 30a. In the example shown by FIG. 2 and FIG. 3, the top plate 30 has five plate-shaped members 30a1-30a5. The plate-like members 30 a are detachable from the underframe 50 of the table 20 respectively. Moreover, each plate-shaped member 30a can move on the underframe 50 in the second direction d2. The size of the top plate 30 can be adjusted by attaching and detaching the plate-like member 30 a. For example, the plate-like member 30a2 and the plate-like member 30a4 are removed from the top plate 30 shown in FIG. 3, another plate-like member 30a6 and the plate-like member 30a7 are attached, and the plate-like members 30a1 and 30a5 are moved. Thus, as shown in FIG. 4, the length of the top plate 30 in the second direction d2 can be adjusted. The size of the top plate 30 can be appropriately adjusted in accordance with the size of the workpiece 5 to be placed.

  Further, the top plate 30 has an opening 31. In the example shown in FIG. 3, the opening 31 is provided in the plate-like member 30 a 1 and the plate-like member 30 a 5 of the top plate 30. That is, the top plate 30 has two openings 31. As well shown in FIG. 3, the opening 31 extends in a first direction d1 along the surface of the top plate 30. The length of the opening 31, that is, the length along the first direction d 1 is, for example, 50 cm to 70 cm, and the width of the opening 31, that is, the length along the second direction d 2 is, for example, 5 cm to 10 cm. It is. Further, as well shown in FIG. 5, the top plate 30 is provided with a step portion 32 for holding the block 40 at the opening 31.

  However, the top plate 30 may consist of one plate-shaped member 30a not only in the illustrated example. Moreover, the opening part 31 which the top plate 30 has may be only one.

  The block 40 is arranged to close a part of the opening 31 of the top plate 30. The blocks 40 are arranged in the first direction d1. As well shown in FIGS. 3 and 5, the opening 31 has a portion where the block 40 is disposed along the first direction d1 and a gap 45 because the block 40 is not disposed. There is a part that That is, the plurality of blocks 40 are arranged in the first direction d1 while forming a gap in part. Furthermore, in other words, a part of the blocks 40 aligned in the first direction d1 in the opening 31 is not in contact with the adjacent blocks 40, and a gap 45 is formed. The blocks 40 adjacent to each other in the first direction d1 in which the gap 45 is not formed are in contact with each other.

  The block 40 has a substantially rectangular parallelepiped shape as a whole, but at least a part of the block 40 has a groove 41 as shown in FIG. The groove 41 is provided on the side on which the work 5 of the block 40 is placed. That is, the groove 41 opens toward the work 5 in a state where the work 5 is placed on the top plate 30. The work 5 is cut along the groove 41 by the laser cutting machine 11. That is, the work 5 is cut by the laser cutting machine 11 at a position facing the groove 41. In other words, the groove 41 is provided at a position corresponding to the cutting position of the work 5 to be cut by the laser cutting machine 11.

  The groove 41 is formed to cross the block 40 in the first direction d1. Therefore, the grooves 41 are open on both sides in the first direction. The grooves 41 of at least two blocks 40 adjacent to each other in the first direction d1 are arranged in the first direction d1 while the blocks 40 are arranged in the opening 31, that is, in the state where the blocks 40 are arranged in the first direction d1. Connected to each other. In other words, at least a part of the groove 41 provided in the block 40 is continuous with the first direction d1. In the example shown in FIG. 3, the grooves 41 of all the blocks 40 adjacent in the first direction d1 are connected to each other in the first direction d1. That is, the grooves 41 of the plurality of blocks 40 arranged without a gap in the first direction d1 form one elongated groove continuous in the first direction d1. The width of the groove 41, that is, the length in the direction orthogonal to the first direction d1 is, for example, 2 mm or more and 20 mm or less, and the depth of the groove 41, that is, the length along the normal direction of the plate surface is, for example, 5 mm or more It is 50 mm or less. Further, in the illustrated example, the grooves 41 are aligned in a straight line so that the work 5 is cut along the straight line. However, the grooves 41 may be aligned with the curve so that the workpiece 5 is cut along the curve.

  When the thickness of the work 5 is thin like a metal mask, if the width of the groove 41 is too large, the work 5 in a portion facing the groove 41 may sag and the work 5 may be deformed. Therefore, the width of the groove 41 is preferably made sufficiently small. That is, by reducing the width of the groove 41, the deformation of the work 5 can be prevented. As a specific example, when the thickness of the work 5 is 40 μm or less, the deformation of the work 5 can be effectively prevented if the width of the groove 41 is 8 mm or less.

  The block 40 also has a projection 42 to be held in the opening 31. As shown in FIG. 5, the projecting portion 42 abuts on the step portion 32 provided in the opening 31, whereby the block 40 is held on the top plate 30 at the opening 31. That is, each block 40 is supported by the top plate 30 at both ends in a direction not parallel to the first direction d1, particularly at both ends in a direction orthogonal to the first direction d1, and is disposed in the opening 31 . The position at which each block 40 is supported can be changed in the opening 31 along the first direction d1. Thereby, the position of the gap 45 can be adjusted along the first direction d1.

  The block 40 is detachable from the top plate 30. By attaching and detaching the block 40, the block 40 having a suitable groove 41 can be replaced in accordance with the cutting position of the work 5 to be cut by the laser cutting machine 11. Further, by attaching and detaching the block 40, the size of the formed gap 45 can be adjusted.

  As well illustrated in FIGS. 1 and 5, the surface of the block 40 on the side where the groove 41 is provided is the same as the plate surface of the top plate 30 in the state where the block 40 is disposed in the opening 31. It is a face. Therefore, even if the block 40 is disposed in the opening 31, the block 40 does not inhibit the work 5 from being placed on the plate surface of the top plate 30. The work 5 is also supported by the block 40. That is, the work support surface is formed by the top plate 30 and the block 40 of the stand 20, and the work 5 can be supported by the surface.

  The underframe 50 supports the top 30. It is preferable that the dimensions in the first direction d1 and the second direction d2 of the underframe 50 be larger than the dimensions of the top plate 30 in order to support the top plate 30 properly. As described above, the underframe 50 movably supports the plate-like member 30a of the top plate 30 in the second direction d2. The underframe 50 has a pair of guides 51 for moving the plate-like member 30a smoothly in the second direction d2. The guide 51 is disposed on the side of the underframe 50 on which the top plate 30 is disposed. The pair of guides 51 respectively extend in the second direction d2 and are provided apart from each other in the first direction d1.

  The dust collection box 60 is a box for collecting dust generated when the work 5 is cut by the laser cutting machine 11. The dust collection box 60 is disposed so as to cover the opening 31 from below as well shown in FIG. That is, the dust collection box 60 covers the opening 31 from the side opposite to the side on which the work 5 of the top plate 30 is placed. The dimensions of the dust collection box 60 in the first direction d 1 and the second direction d 2 as shown in FIG. 3 are larger than the opening 31 so as to cover the opening 31.

The dust collector 70 can suction dust and gas (air) by operating. The dust collector 70 is in communication with the dust collection box 60. Therefore, the dust collected in the dust collection box 60 is drawn to the dust collector 70 by operating the dust collector 70. In addition, the dust collector 70 sucks the gas in the gap 45 of the block 40 disposed in the opening 31 via the dust collection box 60. Therefore, by operating the dust collector 70, the work 5 placed on the top plate 30 can be adsorbed and fixed so as to overlap the opening 31. The suction flow rate of the dust collector 70 when operating the dust collector 70 is sufficiently high to enable dust collection and adsorption fixation of the work 5, but if the suction flow rate is too high, the work 5 that is suction fixed is deformed There is a possibility that it will occur. The specific suction flow rate of the dust collector 70 is, for example, 2 m ³ / min or more and 5 m ³ / min or less.

  Next, the operation of the cutting device 10 and the table 20 will be described. That is, an example of the cutting process of the workpiece 5 using the cutting device 10 will be described.

  First, in order to appropriately support the workpiece 5 on which the dimensions of the top plate 30 are placed, the plate-like members 30 a of the top plate 30 are appropriately disposed on the underframe 50 so as to be larger than the dimensions of the workpiece 5. Further, a block 40 having a groove 41 aligned with the position where the work 5 is to be cut is disposed so as to close a part of the opening 31 of the top plate 30. That is, in the opening 31, the gap 45 in which the block 40 is not disposed is formed.

  Next, the work 5 to be cut is placed on the table 20 by a transport device (not shown). The work 5 is disposed on the top plate 30 so that the position where the work 5 is cut overlaps the groove 41 of the block 40. That is, the work 5 is arranged such that the cutting position indication 5 a indicating the position at which the work 5 is cut overlaps the groove 41. The work 5 placed on the table 20 is in contact with the top plate 30 and the block 40. Therefore, the work 5 is supported by the top plate 30 and the block 40 in a plane.

  Thereafter, the dust collector 70 is operated. The atmosphere in the dust collection box 60, particularly the gas, is drawn by the dust collector 70, so that the atmosphere in the clearance 45 communicating with the internal space of the dust collection box 60, in particular, the gas in the clearance 45 is also sucked. When the gas in the gap 45 is thus sucked, the work 5 is adsorbed through the opening 31. Therefore, the work 5 is adsorbed and fixed on the opening 31 by the gas being sucked by the dust collector 70. The position at which the work 5 is adsorbed is only a position overlapping the gap 45 where the block 40 is not disposed and the groove 41 of the block 40, and the other position is supported by the top plate 30 and the block 40 in a plane. . Therefore, the deformation of the workpiece 5 due to the suction of the workpiece 5 is suppressed.

  Next, the work 5 is cut by the laser cutting machine 11. Since the position to be cut overlaps with the groove 41, the workpiece 5 is cut by the laser cutting machine 11 along the groove 41. Therefore, while the work 5 is cut by the laser cutting machine 11, the laser light which has cut the work 5 is irradiated along the groove 41, so that the stand 20 may be damaged by the laser light, or the stand 20 and the work 5 It is hard to happen welding.

  While the work 5 is being cut by the laser cutting machine 11, dust is generated. By suction by the dust collector 70, dust is sucked into the gap 45 directly or via the groove 41 of the block 40. The dust sucked into the gap 45 is sucked into the dust collector 70 through the dust collection box 60. Therefore, dust is hardly scattered around the cutting device 10.

  In the example described above, the work 5 is cut along the groove 41, but may be cut in the gap 45. In the example shown in FIG. 2, a part of the cutting position indicator 5a indicating the cutting position of the workpiece 5 extends in the second direction d2. The cut position indication 5 a extending in the second direction d 2 overlaps the gap 45. Therefore, in cutting in the gap 45, since the laser beam which has cut the work 5 is applied to the gap 45, breakage of the table 20 by the laser light and welding of the table 20 and the work 5 hardly occur.

  As described above, the table 20 of the present embodiment is a table on which the work 5 to be cut by the laser cutting machine 11 is placed, and the top plate 30 having the opening 31 and a part of the opening 31 And the openings 31 extend in a first direction d1 along the plate surface of the top plate 30, and the plurality of blocks 40 are arranged in the first direction d1. The at least two blocks 40 adjacent to each other in the first direction d1 have grooves 41 connected to each other in the first direction d1 in a state of being aligned in the first direction d1. The work 5 is cut along the groove 41 by the laser cutting machine 11. That is, the laser beam which has cut the work 5 is irradiated along the groove 41. Therefore, according to such a stand 20, even if the work 5 is cut by the laser cutting machine 11, breakage of the stand 20 and welding between the stand 20 and the work 5 can be effectively prevented.

  Further, in the platform 20 of the present embodiment, the block 40 is removable from the top plate 30. According to such a table 20, depending on the cutting position to be cut by the laser cutting machine 11, the block 40 having suitable grooves 41 can be exchanged. Further, by attaching and detaching the block 40, the size of the formed gap 45 can be adjusted.

  Furthermore, in the platform 20 of the present embodiment, the platform frame 50 supporting the top plate 30 is further provided, and the top plate 30 has a plurality of plate-like members 30 a that can be detached from the underframe 50. The plate-like member 30a is movably supported in a second direction d2 which is not parallel to the first direction d1. According to such a stand 20, the size of the top plate 30 can be appropriately adjusted in accordance with the size of the work 5 to be placed by replacing the plate-like member 30a.

  Further, in the stand 20 of the present embodiment, the dust collection box 60 covering the opening 31 from the side opposite to the side on which the work 5 of the top plate 30 is placed, and the dust collector 70 communicating with the dust collection box 60 And further comprising According to such a table 20, dust generated when the work 5 is cut by the laser cutting machine 11 can be collected and suctioned. Further, the work 5 placed on the top plate 30 can be suctioned and fixed so as to overlap the opening 31.

  Furthermore, the cutting method using the cutting device 10 of the present embodiment includes a step of arranging the work 5 so as to overlap the groove 41, a step of cutting the work 5 along the groove 41 by the laser cutting machine 11, Equipped with According to such a cutting method, since the laser beam from which the work 5 is cut is irradiated along the groove 41, even if the work 5 is cut by the laser cutting machine 11, breakage of the stand 20 or the stand 20 and the work 5 It is possible to prevent welding with the

  Note that various modifications can be made to the embodiment described above. Hereinafter, an example of a modification will be described with reference to the drawings.

  For example, a suction member 80 as shown in FIG. 6 may be provided in the groove 41 of the block 40 as shown in FIG. The suction member 80 can suction and fix the work 5 placed on the table 20. The suction member 80 is formed in a bar shape (rod shape), and is detachably provided in the groove 41. The suction member 80 has a smaller dimension than the groove 41 so that it can be provided in the groove 41. For example, the length along the second direction d2 of the suction member 80 is 5 mm or more and 20 mm or less, and the length along the normal direction of the plate surface of the suction member 80 is 5 mm or more and 20 mm or less. The length of the suction member 80 in the first direction d1 may be any length shorter than the groove 41 and longer than the work 5. Further, the suction member 80 has a plurality of suction holes 81 extending along the normal direction of the plate surface in the state of being provided in the groove 41. The suction holes 81 are, for example, cylindrical holes with a diameter of 1 mm or more and 5 mm or less, and are arranged in the first direction d1 at an interval of 1 mm or more and 10 mm or less. The suction pressure of the adsorption member 80 is, for example, 0 kPa or more and 20 kPa or less.

  As the adsorption member 80 operates, the gas inside the adsorption holes 81 is sucked, and the work 5 is adsorbed and fixed. That is, the suction member 80 can reinforce the suction fixation of the work 5 by the dust collector 70. Therefore, the adsorption and fixation of the work 5 on the table 20 can be made more reliable by the adsorption member 80.

Reference Signs List 5 work 5a cutting position indication 10 cutting device 11 laser cutting machine 20 base 30 top plate 30a plate-like member 31 opening 40 block 41 groove 45 space 50 frame 51 guide 60 dust collection box 70 dust collector 80 suction member 81 suction hole

Claims (8)

A table on which a workpiece to be cut by a laser cutting machine is placed,
A top plate having an opening,
And a plurality of blocks arranged to close a part of the opening.
The opening extends in a first direction along a plate surface of the top plate,
The plurality of blocks are arranged in the first direction,
A table, wherein at least two of the blocks adjacent in the first direction have grooves connected to each other in the first direction in a state of being aligned in the first direction.   The table according to claim 1, wherein the block is removable from the top plate. And a frame supporting the top plate,
The top plate has a plurality of plate-like members that are detachable from the underframe,
The table according to claim 1, wherein the frame supports the plate-like member so as to be movable in a second direction that is not parallel to the first direction.   The stand according to any one of claims 1 to 3, further comprising a dust collection box covering the opening from the side opposite to the side on which the work of the top plate is placed.   5. The table according to claim 4, further comprising a dust collector in communication with the dust collection box. It further comprises a suction member having suction holes aligned on one side,
The table according to claim 5, wherein the adsorption member is detachably provided in the groove. A stand according to any one of claims 1 to 6;
And a laser cutting machine for cutting a workpiece. A cutting method using the cutting device according to claim 7, wherein
Placing the workpiece such that the workpiece overlaps the groove;
Cutting the work along the groove by the laser cutting machine.

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