KR20230023143A - Smoke suction apparatus and method thereof - Google Patents

Abstract

According to an embodiment of the present invention, a smoke suction apparatus, which sucks smoke generated in the process of cutting a plate by a laser cutting unit, comprises: a suction unit which is installed spaced apart in the lateral direction of the moving direction of a laser cutting unit, and as it moves in the direction of movement of the laser cutting unit, sucks smoke generated from the cutting part of the plate when the laser is irradiated to the plate of the laser cutting unit.

Description

Smoke suction apparatus and smoke suction method {Smoke suction apparatus and method thereof}

The present invention relates to a smoke suction device and a smoke suction method, and more particularly, to a smoke suction device and a smoke suction method for simultaneously laser cutting a plate from the side of a laser cutting unit and simultaneously sucking in smoke generated from a cut portion of a plate. will be.

In general, in the process of cutting out a unit substrate from a mother substrate, a processing tool such as a laser irradiation nozzle or a cutter wheel held in a scribing head is scribed along a line to be broken, and the thickness direction of the substrate 30 is scribed. Cracks penetrating into the scribe or full cut scribe lines are processed in a lattice shape, and unit substrates are cut out along these scribe lines.

During the scribe line processing by the processing tool, fine dust separated from the substrate 30 scatters. This dust contaminates the tool periphery and adheres to the unit product to be cut, causing quality deterioration or generation of defective products.

In order to solve this problem, the smoke suction device 10 is used to inhale fine dust and/or smoke generated during laser cutting. Conventionally, a device for inhaling fine dust or smoke generated during cutting by a laser is used.

Referring to FIGS. 1 and 2 , a process of inhaling smoke or fine dust generated in the process of cutting a unit substrate from a mother substrate 30 will be described below.

Referring to FIG. 1 , a conventional smoke suction device 10 includes a first suction part 11 and a second suction part 12 .

The first suction part 11 is spaced apart from the rear end of the laser cutting part 20 on the same axis as the moving direction of the laser cutting part 20 . The second suction part 12 is spaced apart from the front end of the laser cutting part 20 on the same axis as the moving direction of the laser cutting part 20 . That is, the second suction part 12, the laser cutting part 20 and the first suction part 11 are arranged in a line along the traveling direction.

The conventional smoke suction device 10 sucks smoke generated from a cut portion of a substrate when the laser cutting unit 20 is operated in front and behind the laser cutting unit 20 .

However, while the smoke generated while the laser cuts the substrate 30 stays in the space provided between the first suction part 11 and the second suction part 12, the smoke is scattered to the substrate 30, and the substrate ( 30), foreign substances are generated on the surface of the substrate 30.

Since these foreign substances degrade the quality of the substrate 30, a cleaning process for the product is additionally performed.

Korean Patent Publication No. 2000-0050098 discloses a laser processing machine dust collector that effectively collects various harmful gases generated during processing in a laser processing machine.

The present invention provides a smoke suction device and a smoke suction method capable of preventing smoke from scattering to the surface of a plate by sucking smoke generated from the cut portion of the plate at the same time as laser cutting the plate from the side of the laser cutting part. aims to do

A smoke suction device according to an embodiment of the present invention is a smoke suction device for sucking in smoke generated in the process of cutting a plate by a laser cutting unit, and is installed spaced apart in a lateral direction of a moving direction of the laser cutting unit, It is characterized in that it includes a suction part that moves in the moving direction and sucks smoke generated from the cutting part of the plate when the laser is irradiated to the plate of the laser cutting part.

Suction unit according to a preferred embodiment of the present invention, a suction pipe passage through which vacuum pressure is applied; And it is characterized in that it comprises a suction port provided in the suction pipe to look in the lateral direction of the laser cutting unit.

In a preferred embodiment of the present invention, the suction pipe, the vertical pipe arranged in parallel with the laser cutting portion; A horizontal tube having a suction port and spaced apart in the lateral direction of the laser cutting unit; And it is characterized in that it consists of a connecting pipe connecting the vertical pipe and the horizontal pipe.

In a preferred embodiment of the present invention, the vertical tube is provided with a vertical tube control unit that expands or shortens the length of the vertical tube along the longitudinal direction of the vertical tube, and the vertical tube control unit is positioned in the vertical direction of the suction tube relative to the laser cutting unit. It is characterized by controlling.

Here, the vertical tube control unit is characterized in that it adjusts the length of the vertical tube within the range of 0mm to 20mm.

In a preferred embodiment of the present invention, the horizontal pipe is provided with a horizontal pipe control unit that expands or shortens the length of the horizontal pipe along the longitudinal direction of the horizontal pipe, and the horizontal pipe control unit is positioned in the left and right direction of the suction pipe relative to the laser cutting unit. It is characterized by controlling.

Here, the horizontal pipe control unit is characterized in that it adjusts the length of the horizontal pipe within the range of 0mm to 50mm.

In a preferred embodiment of the present invention, the suction unit is rotatably installed at the end of the horizontal pipe at a predetermined angle, characterized in that it further comprises an angle adjusting unit for adjusting the angle of the suction port.

Here, the angle adjusting unit is characterized in that it adjusts the angle of the inlet within the range of 0 to 90 degrees with respect to the horizontal pipe.

According to one embodiment of the present invention, the connecting pipe is characterized in that it has a shape bent with a predetermined curvature.

According to another embodiment of the present invention, the connection pipe is provided in a bellows type, characterized in that the position of the suction pipe is adjusted in the vertical direction or the left and right direction.

In a preferred embodiment of the present invention, the inlet is characterized in that it is provided with a wide width within the width range of the horizontal pipe along the longitudinal direction of the horizontal pipe.

Here, the inlet is characterized in that it has a width range within the range of 100mm to 200mm.

In a preferred embodiment of the present invention, the inlet is characterized in that the end of the inlet is inclined from top to bottom along the longitudinal direction of the vertical pipe.

Here, the inclination angle (θ) of the tip of the inlet is characterized in that it is within the range of 5 degrees to 10 degrees.

In a preferred embodiment of the present invention, the suction pipe is characterized in that it is bent in a nieun (b) shape.

In a preferred embodiment of the present invention, the suction pipe is characterized by having an L-shaped bent shape.

On the other hand, the smoke suction method according to a preferred embodiment of the present invention is characterized in that the smoke generated during cutting of the plate is sucked from the side of the laser cutting unit by using a smoke suction device. .

In the present invention, at the same time as the laser cutting the plate on the side of the laser cutting unit, the laser sucks the smoke generated from the cut portion of the plate in the process of cutting the plate, so that the smoke can be prevented from scattering to the surface of the plate.

Accordingly, the present invention can improve the quality of the plate by preventing foreign matter due to the transfer of smoke generated from the cut portion of the plate to the surface of the plate when the plate is cut by a laser.

In addition, while conventionally, a cleaning process for foreign matter transferred to the plate is performed separately, the present invention prevents the occurrence of foreign matter due to smoke generated during laser cutting of the plate, thereby providing a separate cleaning process for removing foreign matter from the plate. By not performing the process, production efficiency and production cost can be reduced.

1 and 2 are diagrams for explaining a process of inhaling smoke generated from a cut portion of a plate during laser cutting using a conventional smoke suction device.
3 and 4 are diagrams for explaining a process of inhaling smoke generated from a cut portion of a plate during laser cutting using a smoke suction device according to an embodiment of the present invention.
5 is a view for explaining the installation state diagram of the inlet to the laser cutting unit.
6 schematically illustrates a perspective view of a suction unit according to an embodiment of the present invention.
7 schematically illustrates a side view of a suction unit according to an embodiment of the present invention.
Figure 8 (a) is a view for explaining the vertical tube control unit, Figure 8 (b) is a view for explaining the horizontal tube control unit.
9 is an image comparing the state of a cut portion of a plate between a case of inhaling smoke using a conventional suction device and a case of inhaling smoke using the smoke inhalation device of the present invention.

Hereinafter, a smoke inhalation device and a smoke inhalation method according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

The smoke suction device 100 according to an embodiment of the present invention sucks smoke generated in the process of cutting the plate 30 by the laser cutting unit 20 in the lateral direction of the laser cutting unit 20. It is an inhalation device.

That is, the smoke suction device 100 is installed spaced apart in the lateral direction of the moving direction of the laser cutting unit 20, and moves in the moving direction of the laser cutting unit 20, while the plate 30 of the laser cutting unit 20 When the furnace is irradiated with a laser, the smoke generated from the cut portion of the plate 30 is sucked.

The smoke suction device 100 includes a suction part composed of a suction pipe 110, an angle adjusting part 120, and a suction port 125.

The suction pipe 110 is a passage through which vacuum pressure is applied. Suction pipe 110 is provided with a suction port 125 at the end. The suction pipe 110 has a bent shape in a nieun (b) shape. Alternatively, the suction pipe 110 has an L-shaped bent shape.

5 to 8, the suction pipe 110 includes a vertical pipe 111, a connection pipe 112 and a horizontal pipe 113. Here, the connecting pipe 112 is a tubular member connecting the vertical pipe 111 and the horizontal pipe 113. The connecting pipe 112 has a shape bent with a predetermined curvature.

As shown in FIG. 5 , the vertical tube 111 is arranged parallel to the laser cutting unit 20 . That is, they are arranged parallel to the laser irradiation direction of the laser cutting unit 20 .

Referring to FIG. 8 (a), the vertical tube 111 is provided with a vertical tube control unit 111c that expands or shortens the length of the vertical tube 111 along the longitudinal direction of the vertical tube 111. The vertical tube control unit 111c adjusts the vertical position of the suction tube 110 relative to the laser cutting unit 20 .

The vertical pipe 111 is composed of a first vertical pipe 111a and a second vertical pipe 111b inserted into the first vertical pipe 111a. The vertical pipe control unit 111c adjusts the distance between the first vertical pipe 111a and the second vertical pipe 111b. Here, the vertical pipe control unit 111c may adjust the overall length of the vertical pipe 111 within a range of 0 mm to 20 mm.

The horizontal tubes 113 are spaced apart from each other in the lateral direction of the laser cutting unit 20 . The horizontal pipe 113 is connected to the vertical pipe 111 by a connecting pipe 112. A suction port 125 is provided in the horizontal pipe 113 .

Referring to FIG. 8 (b), the horizontal pipe 113 is provided with a horizontal pipe control unit 113c for extending or shortening the length of the horizontal pipe 113 along the longitudinal direction of the horizontal pipe 113. The horizontal tube control unit 113c adjusts the position of the suction tube 110 in the left and right directions relative to the laser cutting unit 20 .

The horizontal pipe 113 is composed of a first horizontal pipe 113a and a second horizontal pipe 113b inserted into the first horizontal pipe 113a. The horizontal tube control unit 113c adjusts the distance between the first horizontal tube 113a and the second horizontal tube 113b. Here, the horizontal pipe control unit 113c may adjust the overall length of the horizontal pipe 113 within a range of 0 mm to 50 mm.

An angle adjusting unit 120 is installed at the end of the horizontal pipe 113. The angle adjusting unit 120 is rotatably installed at a predetermined angle on the horizontal pipe 113 to adjust the angle of the inlet 125. Here, the angle adjusting unit 120 may adjust the angle of the inlet 125 within a range of 0 degrees to 90 degrees with respect to the horizontal pipe 113 .

As shown in FIGS. 3 to 5 , the inlet 125 is preferably provided on the horizontal tube 113 so as to face the lateral direction of the laser cutting unit 20 .

The inlet 125 is provided with a wide width within the width range of the horizontal pipe 113 along the longitudinal direction of the horizontal pipe 113. Here, the inlet 125 has a width ranging from 100 mm to 200 mm.

The end of the inlet 125 is inclined from top to bottom along the longitudinal direction of the vertical pipe 111. Here, the inclination angle (θ) of the tip of the inlet 125 is within a range of 5 degrees to 10 degrees.

In the smoke suction device 100 having the above structure, the suction port 125 is disposed toward the side of the laser cutting part 20 . In the smoke suction device 100, the position of the suction port 125 relative to the plate 30 can be adjusted by the vertical pipe control unit 111c of the suction pipe 110, and the laser cutting unit 20 can be adjusted by the horizontal pipe control unit 113c. ) It is possible to adjust the position of the inlet 125 for.

Meanwhile, referring to FIG. 9 , in another embodiment of the present invention, in the smoke suction device 100a, the connection pipe 112a of the suction pipe 110a may be provided in a bellows type. At this time, the vertical and horizontal position adjustment of the suction pipe 110a relative to the laser cutting part 20 can be performed by the connection pipe 112a. Configurations other than the connection pipe 112a are the same as those of the smoke suction device 100 according to the above-described embodiment, so descriptions of the same components, such as the vertical pipe, the horizontal pipe, the suction port, and the angle adjusting unit, will be omitted. .

On the other hand, when the position adjustment of the laser cutting unit 20 and the plate 30 of the smoke suction device 100 is completed, the smoke suction device 100 moves in the traveling direction of the laser cutting unit 20, Smoke generated in the process of cutting the plate 30 is sucked by the laser irradiated from the unit 20 . At this time, the smoke suction device 100 is operated to suck smoke immediately when smoke is generated in the lateral direction of the laser cutting unit 20 .

Accordingly, the present invention prevents the smoke from scattering to the surface of the plate by inhaling the smoke generated from the cutting part of the plate in the process of laser cutting the plate at the same time as the laser cutting of the plate from the side of the laser cutting unit. can

Accordingly, the present invention can prevent foreign matter from being formed on the surface of the plate as the smoke generated from the cut portion of the plate is transferred to the surface of the plate when the plate is cut by the laser.

Hereinafter, the smoke suction speed between the smoke suction device according to an embodiment of the present invention and the smoke suction device according to the prior art will be compared, and a surface image of the plate after cutting will be examined.

Table 1 shows the smoke intake rate (data of Experiments 1 and 2) of the prior art smoke intake device 10 and the smoke intake device 100 of the present invention at each position (#1 to #8). It is a comparison of smoke inhalation rates (data from experiments 3 and 4).

Experiment number #One #2 #3 #4 #5 #6 #7 #8 maximum average One conventional 18.68 18.34 18.64 18.25 18.94 18.36 18.95 18.66 18.95 18.6 2 conventional 18.46 18.41 18.88 18.15 18.72 18.27 18.62 18.34 18.88 18.48 3 the present invention 47.7 45.39 49.19 48.44 47.04 44.76 46.72 46.07 49.19 46.87 4 the present invention 48.35 50.52 51.87 48.29 50.82 51.93 51.45 51 51.93 50.53

Unit: m/s

At the first position (#1), the conventional smoke suction device 10 sucks smoke at 18.68 m/s (Experiment 1) and 18.46 m/s (Experiment 2). At the first position (#1), the smoke suction device 100 of the present invention sucks smoke at 47.7 m/s (Experiment 3) and 48.35 m/s.

At the second position (#), smoke is conventionally inhaled at 18.34 m/s (Experiment 1) and 18.41 m/s (Experiment 2). At the first position (#1), the smoke suction device 100 of the present invention sucks smoke at 45.39 m/s (Experiment 3) and 50.52 m/s.

In Experiment 1, the smoke suction speed of the conventional smoke suction device 10 at the first position (#1) to the eighth position (#8) is 18.6 m/s.

In Experiment 2, the smoke suction speed of the conventional smoke suction device 10 at the first position (#1) to the eighth position (#8) is 18.48 m/s.

In Experiment 3, the speed at which the smoke suction device 100 of the present invention inhales smoke at the first position (#1) to the eighth position (#8) is 46.87 m/s.

In Experiment 4, the smoke suction speed of the smoke suction device 100 of the present invention at the first position (#1) to the eighth position (#8) was 50.53 m/s.

Through experiments 1 to 4, it can be seen that the smoke suction device according to an embodiment of the present invention has a smoke suction efficiency that is about 2.5 times higher than that of the conventional smoke suction device 10.

In the prior art (see FIGS. 1 and 2), the smoke suction device 10 is disposed before and after the moving direction of the laser cutting unit 20, and sucks smoke generated from the plate during operation of the laser cutting unit in front and behind the laser cutting unit. However, at this time, the smoke stays in the space provided between the first suction part 11 and the second suction part 12, and the smoke is scattered to the plate, so that foreign substances are formed on the cutting part of the plate (see before improvement in FIG. 10). this will arise

Compared to the prior art, the smoke suction device 100 of the present invention moves from the lateral direction of the laser cutting unit 20 to the moving direction of the laser cutting unit, and removes the smoke generated from the plate 30 into the laser cutting unit 20. By inhaling from the lateral direction, it is possible to prevent smoke from scattering to the plate 30.

In addition, compared to the prior art, the present invention sucks the smoke generated at the cutting portion of the plate 30 by the laser cutting unit 20 at a speed of about 2.5 times faster than in the prior art, so that the smoke generated at the cutting portion is removed from the plate ( 30) to prevent scattering.

Therefore, when the plate 30 is cut by the laser, the present invention prevents foreign matter due to the transfer of smoke generated from the cut portion of the plate 30 to the surface of the plate 30 (image after improvement in FIG. 10) , the quality of the plate 30 can be improved.

Accordingly, in the prior art, a cleaning process for foreign matter transferred to the plate 30 is performed separately, whereas in the present invention, foreign matter due to smoke generated during laser cutting of the plate 30 does not exist, so that the plate 30 Since a separate cleaning process for removing foreign substances is not performed, production efficiency and production costs can be reduced.

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features.

Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting.

The scope of the present invention is indicated by the claims to be described later rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof are included in the scope of the present invention. should be interpreted

100: smoke suction device
110: suction pipe 111: vertical pipe
112: connector 113: horizontal tube
120: angle adjustment unit 125: inlet

Claims (18)

A smoke suction device for inhaling smoke generated in the process of cutting a plate by a laser cutting unit,
A suction unit spaced apart in the lateral direction of the moving direction of the laser cutting unit and moving in the moving direction of the laser cutting unit, sucking in smoke generated from the cut portion of the plate when the laser is irradiated to the plate of the laser cutting unit. A smoke inhalation device comprising: The method of claim 1, wherein the suction unit,
A suction pipe that is a passage through which vacuum pressure is applied; and
and a suction port provided in the suction pipe to face the lateral direction of the laser cutting unit. The method of claim 2, wherein the suction pipe,
a vertical tube arranged in parallel with the laser cutting unit;
a horizontal tube provided with the inlet and spaced apart from each other in a lateral direction of the laser cutting unit; and
A smoke suction device, characterized in that composed of a connecting pipe connecting the vertical pipe and the horizontal pipe. According to claim 3,
The vertical pipe is provided with a vertical pipe control unit for extending or shortening the length of the vertical pipe along the longitudinal direction of the vertical pipe,
The smoke suction device according to claim 1 , wherein the vertical pipe control unit adjusts a vertical position of the suction pipe relative to the laser cutting unit. According to claim 4,
The smoke suction device according to claim 1 , wherein the vertical pipe control unit adjusts the length of the vertical pipe within a range of 0 mm to 20 mm. According to claim 3,
The horizontal pipe is provided with a horizontal pipe control unit for extending or shortening the length of the horizontal pipe along the longitudinal direction of the horizontal pipe,
The smoke suction device according to claim 1 , wherein the horizontal pipe control unit adjusts the position of the suction pipe in the left and right direction with respect to the laser cutting unit. According to claim 6,
The smoke suction device according to claim 1, wherein the horizontal pipe control unit adjusts the length of the horizontal pipe within a range of 0 mm to 50 mm. The method of claim 3, wherein the suction unit,
The smoke suction device further comprises an angle adjusting unit rotatably installed at an end of the horizontal pipe at a predetermined angle to adjust an angle of the suction port. According to claim 8,
The smoke suction device according to claim 1 , wherein the angle adjuster adjusts the angle of the inlet within a range of 0 to 90 degrees with respect to the horizontal pipe. According to claim 3,
The smoke suction device, characterized in that the connecting pipe has a shape bent with a predetermined curvature. According to claim 3,
The smoke suction device, characterized in that the connection pipe is provided in a bellows type, and adjusts the position of the suction pipe in a vertical direction or a left and right direction. According to claim 3,
The smoke suction device according to claim 1, wherein the suction port is provided with a wide width within a width range of the horizontal pipe along the longitudinal direction of the horizontal pipe. According to claim 12,
The smoke suction device, characterized in that the suction port has a width range within the range of 100mm to 200mm. According to claim 3,
The smoke suction device according to claim 1 , wherein an end of the inlet is inclined from top to bottom along the longitudinal direction of the vertical pipe. 15. The method of claim 14,
The smoke suction device, characterized in that the inclination angle of the tip of the suction port is in the range of 5 degrees to 10 degrees. According to claim 2,
The smoke suction device, characterized in that the suction pipe is bent in a nieun (b) shape. According to claim 2,
The smoke suction device, characterized in that the suction pipe has an L-shaped bent shape. A smoke inhalation method characterized in that the smoke generated during the cutting of the plate is inhaled from the side of the laser cutting unit by using the smoke inhalation device of claim 1.

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