JPH0999385A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability with good condition of carry-in of a work and carry-out of a product without damaging the work and the product, to shut off the spatter of a laser beam and also, to prevent the splashing of the spatter. SOLUTION: In a laser beam machining providing a laser beam machining head 9 attaching a nozzle 9N at the tip part, a metal-made cover 23 is arranged to the tip part of the laser beam machining head 9 is arranged. A metal-made brush 25 is arranged at the tip part of the metal-made cover 23 in the condition of surrounding the nozzle 9N, and further, the material of the metal-made brush 25 is used to the one having incombustibility and refractoriness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing machine, and more particularly, to a worker who receives reflected light of a laser beam emitted toward a workpiece from a nozzle mounted on the tip of a laser processing head. The present invention relates to a laser processing machine that is designed to prevent hitting against.

[0002]

2. Description of the Related Art Conventionally, a laser beam is radiated toward a work from a nozzle attached to a tip of a laser processing head in a laser processing machine, and the work is laser-processed.

In order to prevent the reflected light of the laser beam emitted from the nozzle toward the work from hitting the worker, for example, Japanese Utility Model Laid-Open No. 61-172681 or 61-172681,
As known from Japanese Utility Model Laid-Open No. 2-70891, a protective cover is provided at the tip of the laser processing head.

[0004]

By the way, with the above-mentioned conventional means for preventing the reflected light of the laser beam from hitting the worker by the protective cover or the like, it is difficult to carry in the work or carry out the product, and the workability is improved. However, there is a problem that the scattering of the laser beam is not blocked and the scattering of the spatter cannot be completely prevented.

An object of the present invention is to carry in a work well and carry out a product well, to prevent the work and the product from being scratched, to improve the workability, to further prevent the scattering of the laser beam and prevent the scattering of the spatter. It is to provide a laser processing machine capable of performing the above.

[0006]

In order to achieve the above object, a laser beam machine according to the present invention according to claim 1 is a laser beam machine having a laser beam machining head having a nozzle attached to a tip thereof. A metal cover is provided at the tip of the processing head, and a metal brush is provided at the tip of the metal cover so as to surround the nozzle.

Therefore, since the metal cover is provided at the tip of the laser processing head and the metal brush is provided around the nozzle at the tip of the metal cover, the nozzle is directed toward the workpiece. When the workpiece is laser-processed by the laser beam irradiated more, the laser beam is blocked by the metal brush, and the spatter and the like are prevented from scattering around.

Further, since the metal brush is provided at the tip of the metal cover, it can be used for products including molding processing, and laser processing can be performed without scratching the work surface and the processed surface (upper surface) of the product. Done. Moreover, loading and unloading of workpieces and products becomes good. Thus, workability can be improved.

According to a second aspect of the present invention, there is provided the laser beam machine according to the first aspect, wherein the material of the metallic brush is nonflammable and fire resistant.

Therefore, since the metallic brush is made of nonflammable and fireproof, it can be used for a long period of time and has a long life.

[0011]

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

Referring to FIG. 3 and FIG. 4, for example, a laser punch compound machine 1 as a laser processing machine is provided with an upright gate-shaped frame 3, which is a lower frame 3D and a side. It is composed of a frame 3S and an upper frame 3U. Rotatable upper and lower turrets 5 and 7 are supported on the upper and lower frames 3U and 3D of the gate frame 3, respectively.

On the circumferences of the upper and lower turrets 5 and 7, a plurality of punches P and dies D are mounted corresponding to each other at appropriate intervals. In FIG. 3, the right ends of the upper and lower turrets 5 and 7 are punching positions P _{K for} punching. The upper frame 3U at the punching position P _K is provided with a striker (not shown) that can move up and down, and the punch P is hit by the up and down movement of the striker. A laser processing head 9 is provided so as to hang down on the upper frame 3U in the vicinity of the right side of the punching position P _K in FIGS. 3 and 4, which is the laser processing position L _K. A laser nozzle 9N is attached to the tip of the laser processing head 9.

Guide rails 11 are provided upright in front of and behind the gate frame 3 (upper and lower in FIG. 3). On the guide rail 11, a front that can move in the Y-axis direction,
Rear work tables 13F and 13R are provided.
A center work table 15 is fixed between the front work table 13F and the rear work table 13R.
Is provided. A carriage base 17 that is movable in the Y-axis direction by a Y-axis motor (not shown) is integrally provided on the right side of the front and rear work tables 13F and 13R in FIGS.

The carriage base 17 has a carriage 19 movable in the X-axis direction by an X-axis motor (not shown).
The carriage 19 is provided with a plurality of work clamps 21 for clamping the work W.

A laser oscillator 23 is arranged adjacent to the left side frame 3S of the gate-shaped frame 3. The laser beam oscillated by the laser oscillator 23 is sent to the laser processing head 9 through a laser protection tube (not shown) provided in the gate frame 3. The laser beam is radiated toward the work W from a laser nozzle 9N attached to the tip of the laser processing head 9.

With the above structure, after the work W to be processed is clamped by the work clamp 21, the carriage 1
9 by moving the carriage base 17 in the X-axis direction and the carriage base 17 in the Y-axis direction so that the desired position of the work W is punched at the punching position P _K.
To position. Then, the work P is punched by the cooperation of the punch P and the die D.
When performing laser processing on the work W, the desired position of the work W is similarly positioned at the laser processing position L _K. Next, the laser beam is irradiated toward the work W from the laser nozzle 9N attached to the tip of the laser processing head 9, whereby the work is laser-processed.

As shown in FIG. 1, the tip of the laser processing head 9 is provided with, for example, a cylindrical metal cover 23. A metallic brush 25 surrounding the laser nozzle 9N is detachably provided at the tip of the metallic cover 23. As shown in FIG. 2, for example, the metal brush 25 is composed of a ring 27 and a wire brush 29 provided on the circumference of the ring 27 and having a fine density with a wire diameter of, for example, 0.05 mmφ. Has been done. Moreover, the material of the wire brush 29 is made of non-combustible and fire-resistant metal such as tungsten.

With the above structure, a metal cover 23 is provided at the tip of the laser processing head 9 and a metal brush 25 surrounding the laser nozzle 9N of the metal cover 23 is provided.
By providing the above, the laser beam emitted from the laser nozzle 9N toward the work W is blocked, and it is possible to prevent the spatter and the like from scattering around. Therefore, the punch P, the die D, or the operator at the punching position P _K is not exposed to the laser beam, so that the protection is protected. Moreover, it is possible to carry in and out the work W and the product better than before.

Further, it becomes possible to process the work W, for example, the product W _G including the cut and raised W _K and the processed forming process as shown in FIG. Since the wire brush 29 having a small wire diameter is used as the metal brush 25, it is possible to prevent the processed surface (upper surface) of the work W or the product W _G from being scratched by the cover. Thus, the workability can be improved as compared with the conventional case.

Since the wire brush 29 is made of nonflammable and fireproof, it can be used for a long period of time and can have a long life. Moreover, at the end of life, a metal brush 2
5 can be removed and replaced with a new one.

The present invention is not limited to the examples of the above-described embodiment, but can be modified as appropriate.
It can be implemented in other aspects.

[0023]

As can be understood from the examples of the embodiment as described above, according to the invention of claim 1, a metal cover is provided at the tip of the laser processing head and the metal cover Since a metal brush is provided at the tip surrounding the nozzle, the laser beam is blocked by the metal brush when the workpiece is laser-processed by the laser beam emitted from the nozzle toward the workpiece. hand,
It is possible to prevent spatter and the like from scattering around.

Further, since the metal brush is provided at the tip of the metal cover, it can be used for products including molding processing, and laser processing can be performed without scratching the work surface and the processed surface (upper surface) of the product. It can be carried out. Moreover, loading and unloading of workpieces and products becomes better than before. Thus, the workability can be improved as compared with the conventional case.

According to the invention of claim 2, since the metal brush is made of nonflammable and fireproof, it can be used for a long period of time and can have a long life.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of the present invention, in which a metal cover having a metal brush at its tip is provided at the tip of a laser processing head.

FIG. 2 is a perspective view showing an example of a metal brush.

FIG. 3 is a plan view of a laser / punch composite machine as a laser processing machine according to the present invention.

FIG. 4 is a front view of FIG.

[Explanation of symbols]

 1 Laser / Punch Combined Machine 9 Laser Processing Head 9N Laser Nozzle 23 Metal Cover 25 Metal Brush 27 Ring 29 Wire Brush

Claims (2)

[Claims] 1. A laser processing machine comprising a laser processing head having a nozzle attached to the tip thereof, wherein a metal cover is provided on the tip of the laser processing head, and the nozzle is attached to the tip of the metal cover. A laser processing machine characterized in that a metal brush is provided in an enclosed state. 2. The laser processing machine according to claim 1, wherein the material of the metal brush is nonflammable and fire resistant.