JPS63303692A - Machining head for laser beam machine - Google Patents

Abstract

PURPOSE:To safely perform the laser beam machining by fixing one hand of a hollow nozzle which is freely elastic in the proceeding direction of a laser beam and freely bendable in its orthogonal direction and through which the laser beam is passed on a mount part of a machining lens to eliminate the need to change it due to the burning. CONSTITUTION:The machining lens 2 is fixed on the mount 5 by a pressing nut 7 and a pressing screw 8 and installed on a main body 6. The laser beam emitted from a laser beam oscillator is condensed by the machining lens 2 and forms a focus on a place where it comes out from the nozzle 1 to perform the machining of a work. When the force is applied to the tip of the nozzle 1 at the time of moving, bellows 9 expand and contract and it is inclined and a coating 10 part is moved and the laser beam strikes thereupon and is reflected several times and comes out from the tip of the nozzle. Afterward, when the external force is eliminated, the nozzle is returned to the origin and the laser beam machining is again performed.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a processing head for a laser processing machine, and particularly relates to a processing head for a laser processing machine.
It is about Sodo.

(Prior Art) Fig. 1 is a sectional view showing, for example, a conventional machining device. In the figure, (1) is a nozzle, (2) is a processing lens that focuses laser light, and (3) is a The support that holds the lens is gold.
(4) is a screw for adjusting the nozzle position, (5) is a mount for storing the entire processed lens (2), (6) is a holding nut that holds down the processed lens (2) attached to the mount (5), (7) is a processed lens (
2) is a cap screw that fixes the parts, and (8) is the main body that holds these as a whole.

Next, the operation will be explained. The v-47J1 industrial machining head is a device for focusing the laser light guided from the V-laser oscillator onto the workpiece, and holds the machining lens (2) with a nut (6) and a retaining screw (7). It consists of a part that is fixed and held by the mount (5). This is a processed lens (
2) It can be removed for maintenance and is attached to the main body (8).

In addition, the light collected by the processing lenses (2) has a nozzle between the light collecting position and the lens, which has functions such as ejecting gas for lens protection. This nozzle (1
) is adjusted with screws (4), and the receiver is fixed with gold (3).

Processing is performed by moving the entire head over the workpiece.

[Point g while the invention is trying to solve the problem]

Since the conventional processing head for laser processing equipment is configured as described above, if some force is applied to the nozzle (1) while the laser beam is being emitted, the nozzle J%/(1) will be burnt out. There were m points where it was necessary to replace it and it was dangerous to replace it.

Jin's invention was made to eliminate the above-mentioned ta, and aims to protect the nozzle as well as the entire processing head for a Cζ laser processing device.

[Means for solving the 11 points in between] The processing head for laser processing equipment according to Jin's invention has the function of preventing the nozzle from shifting and protecting the entire equipment when an external force is applied to the nozzle. It is something that

[Function] The nozzle V according to the present invention has a portion absorbing external force in the middle lS6 portion, and returns to its original state when the external force is removed.

[Example of invention]

An embodiment of the present invention will be described below with reference to the drawings. Second
In the figure, the processed lens (2) is fixed to a mount (5) by a holding screw (6) and a holding screw (7) Gζ, and is attached to the main body (8).

The light focused by the Sarayu ζ (2) is adjusted by the screw (4) flea ζ, and the receiver is fixed by the nozzle V fixed by the metal (3).
(1) Passes through '. This nozzle (1) is equipped with a japa 9 (9) for flexibly moving the tip and a coating aQ with high reflectivity on the inside.

Next, the operation of one embodiment of Jin's invention will be described. Second
In the figure, the processed lens (2) is mounted by the retaining nut (6) and the retaining screw (7) (5).
It is attached to the main body (8). The laser light emitted from the laser oscillator is focused by the processing lens (2), and then passed through the nozzle (1).
), and processing is performed by moving the workpiece or the laser beam, but when moving, if force is applied to the tip of the nozzle (1), the bellows (9) will expand and contract. When the coating is tilted, the α0 portion of the coating moves, and the laser beam hits it, but it is reflected several times and exits from the tip of the nozzle. Thereafter, when the external force is removed, the nozzle V(1) returns to its original position and laser processing can be performed again.

Although the knee head portion has been described in the above embodiment, the same effect can be achieved for a portion that needs to be protected by the laser beam extraction portion.

In addition, by attaching a force separator νφ to the coating part, it may be possible to provide a function to output a signal that makes laser processing impossible. The grooved bottom allows it to move freely, so there is no need to replace it due to burnout.
This has the effect of allowing laser processing to be performed safely.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a processing head for a laser processing device according to an embodiment of the invention of ξ, and FIG. 2 is a sectional view showing a conventional processing head for a laser processing device. In the figure, (1) is the nozzle, (9) is the bellows, αG
is a coating. In addition, in the figures, the same reference numerals indicate the same parts. Figure 1 1: Nos”-RecI: Kuyaruguu IO: 27”

Claims (1)

[Claims] It can be expanded and contracted in the direction of travel of the laser beam, and can be bent in a direction perpendicular to the direction of travel of the laser beam, and its inner wall is coated with a high reflectance coating that reflects the laser beam. A processing head for a laser processing machine, characterized in that one side of the hollow nozzle that allows the laser light to pass through without any obstruction is fixed to a mount part that fixes a processing lens that focuses the laser light on the workpiece.