JP2000343268A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently collect dust dispersed in the upper direction of a work and corrosive gas escaped in the upper direction of the work by executing suction from upper direction of the work through a dust collecting duct. SOLUTION: The device is constituted so that a dust collecting hood 25 is provided to cover around a machining head 23 on a y-axis carriage 13, a dust collecting duct 27 is provided extending in the direction of y-axis and penetrating through the interior of the dust collecting hood 25, and only a part which is provided, in accordance with moving of the machining head 23, penetrating through the dust collecting duct 27 and located in the dust collecting hood 25 in a duct cover 35 is constituted to locally and successively open the opening part 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser beam machine having a sufficient dust collecting function.

[0002]

2. Description of the Related Art A conventional laser beam machine is disclosed in
This prior art will be briefly described below.

[0003] The above-mentioned laser beam machine is based on a bed extending in the x-axis direction, and a portal frame is provided upright at the center of the bed. A table for supporting the work is provided on the bed so as to be movable in the x-axis direction, and a y-axis carriage is provided on the horizontal portion of the portal frame so as to be movable in the y-axis direction. The y-axis carriage is provided with a processing head for irradiating the work with laser light. Below the table, a dust collection duct for sucking dust and corrosive gas is provided extending in the y-axis direction. Above the dust collection duct, a plurality of openings are juxtaposed in the x-axis direction. A cover member is provided at each opening so that a cover member located vertically below (immediately below) the processing head among the plurality of cover members opens the corresponding opening.

Accordingly, the table supporting the work is moved in the x-axis direction, and the y-axis carriage is moved in the y-axis direction to move the machining head integrally in the y-axis direction. Thereby, the work can be moved in the x-axis direction and the y-axis direction relative to the processing head, and the processed portion of the work is positioned at a predetermined processing position (for example, a vertical lower position of a nozzle of the processing head). I can do it. Then, by irradiating the processing head with laser light, desired processing (for example, drilling processing) can be performed on the processed portion of the work. In addition, by irradiating the laser beam with the processing head, the workpiece is moved relative to the processing head along the direction of the workpiece,
For example, a slit cutting process can be performed.

[0005] During laser processing, by opening a corresponding opening of a selected one of the plurality of lid members, dust and corrosive gas generated by the processing are passed through the opening selected from below the work. To collect dust and corrosive gas.

[0006]

By the way, during laser processing, especially before a through hole is formed in a work, dust may scatter upward in the work or corrosive gas may flow upward in the work. However, when the workpiece is sucked from below by a dust collecting duct as in a conventional laser beam machine, the dust and corrosive gas cannot be sufficiently collected. Therefore, there is a problem that the working environment is harmed by the dust scattered in the upward direction of the work, and rust and the like are generated on the processing head and its peripheral devices by the corrosive gas flowing in the upward direction of the work, thereby shortening the life.

[0007]

According to the first aspect of the present invention, a table for supporting a work is provided so as to be movable in the x-axis direction, and a y-axis carriage is provided above the table in the y-direction.
A machining head for irradiating a laser beam to the work is provided on the y-axis carriage;
A dust collection hood is provided on the shaft carriage so as to cover the periphery of the processing head, and a dust collection duct for sucking dust and corrosive gas is provided extending in the y-axis direction and penetrating through the dust collection hood. An opening is provided in the duct so as to extend in the y-axis direction, and a duct cover covering the opening is provided so as to extend in the y-axis direction. Only a portion of the duct cover located in the dust collecting hood according to the movement of the processing head. Is characterized in that the opening is locally opened.

Here, the phrase that only the portion of the duct cover located in the dust collecting hood sequentially opens the opening locally according to the movement of the processing head means that a portion of the located portion opens the opening. In addition, the entire portion may be open at the opening.

According to the first aspect of the present invention,
The table supporting the work is moved in the x-axis direction, and the y-axis carriage is moved in the y-axis direction to move the machining head integrally in the y-axis direction. As a result, the work can be moved in the x-axis direction and the y-axis direction relative to the processing head, and the processed portion of the work is positioned at a predetermined processing position (for example, a position vertically below the nozzle of the processing head). I do. Then, by irradiating the processing head with laser light, desired processing (for example, drilling processing) can be performed on the processed portion of the work. Further, by irradiating the laser beam and moving the work relative to the processing head along the direction of the processing target portion, it is possible to perform a slit cutting process on the work.

On the other hand, only the portion of the duct cover located in the dust collecting hood is sequentially opened locally in accordance with the movement of the processing head, so that the inside of the dust collecting hood is partially opened through the dust collecting hood. And the inside of the dust collection duct. Further, when the dust collecting hood is moved in the y-axis direction together with the y-axis carriage, the opening can be locally and continuously opened corresponding to the position of the dust collecting hood in the y-axis direction. During the movement, the inside of the dust collecting hood and the inside of the dust collecting duct can be always communicated through a part of the opening. Accordingly, dust and corrosive gas can be sucked from above the work through a part of the opening by the dust collection duct, particularly before the through-hole is formed in the work during laser processing.

According to the second aspect of the invention, in addition to the effect of the first aspect, the opening is provided above the dust collecting duct, and the opening in the duct cover is moved according to the movement of the processing head. A first support for pushing up the duct cover into the dust collecting hood so that only the portion located in the dust collecting hood sequentially opens the opening locally.
In addition to providing a support, a pair of second supports for supporting the duct cover from above are provided on both sides of the first support in the dust collecting hood.

According to the second aspect of the present invention,
The same operation as the operation according to the first aspect of the present invention is achieved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIGS. 1 to 3, a laser beam machine 1 according to an embodiment of the present invention has an x-axis direction (in other words, a left-right direction, a front-back direction in FIG. The bed 3 is extended in the direction, that is, diagonally downward left and diagonally upward right in FIG. 3), and a gate-shaped frame 5 is erected at the center of the bed 3. The bed 3 is provided with a work table 7 for supporting a plate-shaped work W. The work table 7 is moved in the x-axis direction by driving an x-axis servo motor 9.
The work table is provided with fixing means (not shown) for fixing the plate-shaped work W.

The horizontal portion 5a of the gate-shaped frame 5 has a y-axis direction (in other words, a front-rear direction, a right-left direction in FIG. 1, a front-back direction in FIG. 2, a diagonally lower right and a diagonally upper left in FIG. 3). Direction), a pair of y-axis guides 11 are provided. The y-axis carriage 13 is provided on the pair of y-axis guides 11 so as to be movable in the y-axis direction by driving a y-axis servomotor 15. The y-axis carriage 13 is provided with a pair of z-axis guides 17 extending in the z-axis direction (in other words, up and down directions, that is, up and down directions in FIGS. 1 to 3). Carriage 19 is z
It is provided so as to be movable in the z-axis direction by driving the axis servomotor 21. The z-axis carriage 19 is provided with a processing head 23 for irradiating the work W with laser light from above.

Next, the main part of the embodiment of the present invention will be described.

A dust collecting hood 25 is integrally provided below the y-axis carriage 13 and covers the periphery of the processing head 23 during processing. A dust collecting duct 27 for sucking dust and corrosive gas is provided integrally with a horizontal portion 5a of the portal frame 5 via a support bracket 29. The dust collecting duct 27 extends in the y-axis direction. And passes through the inside of the dust collecting hood 25. The dust collection duct 27 is connected to a suction device 31 provided at an appropriate position on the left side of the bed 3.

An opening 33 is provided above the dust collecting duct 27.
Are provided extending in the y-axis direction, and a duct cover 35 is provided extending in the y-axis direction so as to cover the periphery of the opening. Here, the front end of the duct cover 35 is fixed to the upper front end of the dust collection duct 27, and the rear end of the duct cover 35 is fixed to the upper rear end of the dust collection duct 27. According to the movement of the processing head 23, only the portion of the duct cover 35 located in the dust collecting hood 25 is sequentially opened.
A first support roller 37 that supports the duct cover 35 so as to push up the dust cover 35 is rotatably provided in the dust collection hood 25, and a first support roller in the dust collection hood 27. A pair of second support rollers 39 that support the duct cover 35 so as to press the duct cover 35 from above are provided rotatably on both front and rear sides of the roller 37. here,
The first support roller 37 and the pair of second support rollers 39 have x
Each is rotatable about an axis of rotation in the axial direction. In addition, when only the portion of the duct cover 35 located in the dust collecting hood 25 sequentially opens the opening portion 33 in accordance with the movement of the processing head 23, as shown in FIG. In addition to opening the portion 33 locally, the entire portion where the portion is located may open the opening 33 locally.

Next, the operation of the embodiment of the present invention will be described with reference to the drawings.

The table supporting the plate-like work W is moved in the x-axis direction by driving the y-axis servo motor 9 and the y-axis carriage 13 is moved in the y-axis direction by driving the y-axis servo motor 15 for machining. The head 23 is moved in the y-axis direction. As a result, the work W is
3, the workpiece W can be moved in the x-axis direction and the y-axis direction, and the workpiece to be processed is positioned at a predetermined processing position (in the embodiment of the present invention, the nozzle opening of the processing head 23). Vertically below). The work head 23 irradiates the work W with laser light from above in a state where the position of the work head 23 in the z-axis direction is adjusted by driving the z-axis servo motor 21. A desired processing (for example, a drilling processing) can be performed on the portion to be processed. Further, the processing head 2
By irradiating the workpiece W with the laser beam and moving the workpiece W relative to the processing head along the direction of the workpiece, the workpiece W can be slit-cut.

On the other hand, only the portion of the duct cover 35 located inside the dust collecting hood 25 sequentially opens the opening 33 in accordance with the movement of the processing head 23, so that the dust is collected through a part of the opening 33. Hood 25 and dust collection duct 2
7 can communicate with each other. Further, when the dust collection hood 25 is moved in the y-axis direction together with the y-axis carriage 13, the opening 33 can be locally and continuously opened corresponding to the position of the dust collection hood 25, and the y-axis carriage 13 can be opened. During the movement, the inside of the dust collecting hood 25 and the inside of the dust collecting duct 27 can be communicated via a part of the opening 33. Therefore, during machining, particularly before machining the through-hole in the work W, the opening 33 in the dust collection duct 27 from above the work W.
Dust and corrosive gas can be sucked through a part of the.

As described above, according to the embodiment of the present invention, dust and corrosive gas can be sucked from above the work W through a part of the opening 33 by the dust collection duct 27 during machining. As a result, it is possible to sufficiently collect dust scattered in the upward direction of the work W to improve the working environment, and to sufficiently collect dust of corrosive gas flowing in the upward direction of the work W. Rust and the like of the device 23 and its peripheral devices can be suppressed to improve the life.

Since only the portion of the duct cover 35 located inside the dust collecting hood 25 sequentially opens the opening 33 in accordance with the movement of the processing head 23, the open portion of the entire opening 33 is opened. And the dust collection efficiency of the dust collection duct 27 can be increased.

The present invention is not limited to the above-described embodiment of the invention. For example, instead of providing the opening 33 above the dust collecting duct 27, the opening 33 may be provided on the left side or below the dust collecting duct 27. Appropriate changes such as the provision of the opening 33 can be made. Further, as shown in JP-A-2-46989, a means capable of collecting dust from below the work W may be added. .

[0025]

According to the first aspect of the present invention, the dust and the corrosive gas can be sucked from above the work through a part of the opening by the dust collection duct during the processing.
Thoroughly collect dust scattered in the upward direction of the work,
In addition to the effect of improving the working environment, it is possible to sufficiently collect the corrosive gas flowing in the upward direction of the work, suppress the generation of rust and the like on the processing head and its peripheral devices, and improve the life.

Further, only the portion of the duct cover located in the dust collecting hood sequentially opens the opening in accordance with the movement of the processing head 23, so that the area of the open portion of the entire opening is small, The dust collection efficiency of the dust collection duct can be increased.

According to the invention described in claim 2, according to claim 1
Has the same effects as the effects of the invention described in (1).

[Brief description of the drawings]

FIG. 1 is a left side view of a main part of a laser beam machine according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of the laser beam machine according to the embodiment of the present invention.

FIG. 3 is a perspective view of the laser beam machine according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 laser processing machine 7 work table 13 y-axis carriage 23 processing head 25 dust collecting hood 27 dust collecting duct 33 opening 35 duct cover 37 first support roller 39 second support roller

Claims (2)

[Claims] 1. A table for supporting a work is provided so as to be movable in an x-axis direction, a y-axis carriage is provided so as to be movable in a y-axis direction above the table, and a laser beam is applied to the work on the y-axis carriage. A processing head for irradiation is provided, a dust collecting hood is provided on the y-axis carriage so as to cover the periphery of the processing head, and a dust collecting duct for sucking dust and corrosive gas is extended in the y-axis direction. The duct is provided with an opening extending in the y-axis direction, and a duct cover covering the opening is provided extending in the y-axis direction. A laser processing machine characterized in that only a portion located in a dust collecting hood is configured to sequentially open the opening locally. 2. The method according to claim 1, wherein the opening is provided above the dust collecting duct, and only a portion of the duct cover located in the dust collecting hood is sequentially opened locally according to the movement of the processing head. For this reason, a first support for supporting the duct cover to be pushed up is provided in the dust collecting hood, and a pair of first supports for supporting the duct cover from above in both sides of the first support in the dust collecting hood. The laser processing machine according to claim 1, further comprising a second support.