JPH06676A - Machining head for thermal cutting device - Google Patents

Abstract

PURPOSE:To facilitate the automation of products sorting, etc., by enlarging cutting width and easily separating products from scrap. CONSTITUTION:The machining head 5 of a laser beam machine 1 is provided with a laser head 11 by which a workpiece is irradiated with a laser beam LB. Simultaneously, adjacent to the laser head 11, a plasma head 15 equipped with a nozzle 17 is provided by which a cutting medium is irradiated in parallel with the axial center of the laser head 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing head of a thermal cutting processing apparatus, and more particularly to a thermal cutting processing apparatus in which the processing head is provided with two axes of a laser head and a cutting medium head for irradiating a cutting medium. Processing head.

[0002]

2. Description of the Related Art Conventionally, in a thermal cutting apparatus such as a laser processing machine, when laser processing is performed, micro joint processing is often performed because the laser cutting width (spot diameter) is small.

[0003]

By the way, in the above-mentioned processing method by the conventional laser processing machine, it is necessary to perform a work for separating the micro joint portion as a post-work, and since the cutting width is small if the separation is made, There was a problem that it was very difficult to sort scraps and products. In addition, there is a problem that the cut product becomes slanted and does not drop and hits the laser head and breaks the laser head. Further, in the laser compound processing machine combined with the turret punch press, the product is often entangled in the work shooter. Therefore, a sensor was provided in the work shooter as a countermeasure, but this increased the equipment cost.

For this reason, it is only necessary to facilitate the separation of the product and the scrap, but the current laser cutting width is 0.1 to 0.
With a width of about 2 mm, the wider the cutting width, the more difficult the processing becomes.

In order to solve the above problems, an object of the present invention is to provide a processing head of a thermal cutting processing apparatus in which a cutting width is increased to easily separate a product from a scrap, and automation of product sorting and the like is facilitated. To do.

[0006]

In order to achieve the above object, the present invention provides a machining head of a thermal cutting machine,
A laser head for irradiating a laser beam is provided on this machining head, and a cutting medium head for irradiating a cutting medium is provided adjacent to the laser head in parallel with the axis of the laser head to configure the machining head of the thermal cutting machine. .

[0007]

By adopting the processing head of the thermal cutting processing apparatus of the present invention, a laser head for irradiating the processing head with laser light and a cutting medium head for adjoining the laser head and performing, for example, plasma irradiation as a cutting medium are provided. With the provision, the cutting width can be widened by the biaxial processing of laser cutting and plasma cutting, and the product and the scrap can be easily separated.

[0008]

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

First, the overall construction of a laser processing machine according to an embodiment of the present invention will be briefly described.

Referring to FIG. 5, a laser beam machine 1 as a thermal cutting apparatus has a gate-shaped frame 3 having an upper frame 3U having a Y-axis direction (vertical direction with respect to the drawing in FIG. 5) and a Z direction. A processing head 5 is provided which is movable in the axial direction (vertical direction in FIG. 5). A laser oscillator 7 for irradiating the laser beam LB from the processing head 5 is provided on the bed adjacent to the frame 3.

Further, a work table 9 is provided which is movable in the X-axis direction (left and right direction in FIG. 5) through the gate-shaped frame 3, and this work table 9 is provided.
The work W is placed on top.

With the above structure, the work W is placed on the work table 9, the work table 9 is moved in the X-axis direction, and at the same time, the laser oscillator 7 causes, for example, He, N ₂ , C.
A laser beam LB made of a mixed gas of O ₂ is oscillated and is irradiated onto the work W together with an assist gas such as oxygen from the machining head 5 along a path indicated by a chain double-dashed line. Then, by moving the machining head 5 in the Y-axis and Z-axis directions,
The work W is subjected to a heat cutting process in a desired shape.

Next, the processing head 5, which is the main part of this embodiment, will be described in more detail.

Referring to FIGS. 1 and 2, a laser head 11 having a laser nozzle 11N at its tip is provided at the center of the processing head 5, and a condenser lens 13 is mounted inside the processing head 5. , The laser beam LB is a condenser lens 1
The laser nozzle 1 of the laser head 11 is focused by 3
The surface of the work W is irradiated from 1N. Further, the processing head 5 is provided with a plasma head 15 which is adjacent to the laser head 11 and which irradiates a cutting medium, for example, plasma in parallel with the axis of the laser head 11, and a tip of the plasma head 15. A nozzle 17 is attached to the.

Further, a gear 19 is integrally mounted on the outer periphery of the processing head 5, a pinion 21 meshes with the gear 19, the pinion 21 is fitted to an output shaft 25 of an electric motor 23, and the electric motor 23 is It is fixed to the frame 3 side.

With the above construction, the operation is as shown in FIG.
In addition, the center of the laser nozzle 11N provided in the laser head 11 and the center of the nozzle 17 mounted in the plasma head 15 are processed by driving the electric motor 23 so that the gear 19 is rotated by the pinion 21. Since the head 5 rotates, the center deviation of the nozzles 11N and 17 with respect to the cutting direction can be set appropriately.

For example, as shown in FIG. 4, when the product WG is processed by the laser head 11, the cutting width A dimension is about 0.1 to 0.2 mm, and at the same time, the plasma head 15 is cut. When plasma processing is performed with the nozzle 17 provided, a cutting width B of about 1 to 2 mm is obtained, and a total cutting width C of 1.1 to 2.2 mm is obtained.

For this reason, the cutting width is greatly expanded as compared with the conventional case, and the product WG can obtain the cutting surface accuracy by the laser processing, and the processing by the plasma does not need to make a good cutting simply by expanding the cutting width.

Therefore, the product and the scrap are easily separated from each other, and the product is not caught obliquely,
It is possible to prevent the processing head 5 from being hit and broken.
Further, by simply lifting the skeleton, the product can be easily separated from the product, and as a result, the product sorting and the like can be easily automated.

Further, by having two processing axes for laser processing and plasma processing, it is possible to selectively switch and cut according to the object to be processed. For example, a thick plate or a processed product that does not require precision is a plasma. It is possible to perform machining on one axis.

FIG. 3 shows another embodiment, which is different from the above-mentioned first embodiment in that the machining head is fixed,
The plasma head is rotated, and the same members are designated by the same reference numerals and the description thereof is omitted.

The laser nozzle 11 is provided at the center of the processing head 27.
N is provided, and the condenser lens 1 is provided inside the processing head 27.
3, the laser beam LB is condensed by the condensing lens 13 and is irradiated onto the surface of the work W from the laser nozzle 11N. Further, a plasma head 29, which is adjacent to the laser head 27 and radiates, for example, plasma, which is a cutting medium parallel to the axis of the laser head 27, is provided on the processing head 27. The rotary wheel 33 is rotatably mounted on the processing head 27 via a bearing 35.

Then, the pinion 21 meshes with the tooth portion 31 provided on the rotary wheel 33, the pinion 21 is fitted to the output shaft 25 of the electric motor 23, and the electric motor 23 is fixed to the frame 3 side. A nozzle 17 is provided at the tip of the plasma head 29. With the above configuration, the center of the laser nozzle 11N and the center of the nozzle 17 mounted on the plasma head 29 are rotated by the electric motor 23 so that the tooth portion 31 is rotated by the pinion 21 and the rotary wheel 33 having the tooth portion 31 is rotated. Rotates. Since the plasma head 29 provided on the rotary wheel 33 rotates around the laser head 27, the deviation of the centers of the nozzles 11N and 17 can be set appropriately.

Thus, the operation and effect are the same as those of the first embodiment described above, and the same effect can be exhibited.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. For example, in this embodiment, plasma is used as the cutting medium, but YAG
A laser, a gas, a water jet, or the like can be used, and a head for irradiating plasma is provided on one axis, but a multi-head can be used without limiting the number.

[0026]

As will be understood from the above description of the embodiments, according to the present invention, since the structure is as described in the claims, the cutting medium is irradiated adjacent to the laser head. It is possible to widen the cutting width by providing a cutting medium head that performs the above-mentioned processing, and by slightly shifting the processing axis. As a result, products and scraps can be easily separated, and automation of product sorting and the like becomes easy.

[Brief description of drawings]

FIG. 1 is a side view of a processing head showing a main part of the present invention.

FIG. 2 is a bottom view seen from below in FIG.

FIG. 3 is a sectional view of a processing head showing another embodiment.

FIG. 4 is an operation explanatory view.

FIG. 5 is a side view showing a schematic configuration of a laser processing machine according to an embodiment of the present invention.

[Explanation of symbols]

 1 Laser Processing Machine (Heat Cutting Processing Device) 5 Processing Head 11 Laser Head 11N Laser Nozzle 15 Plasma Head 17 Nozzle

Claims (1)

[Claims] 1. A cutting head for a thermal cutting apparatus, comprising a laser head for irradiating a laser beam to the processing head, and irradiating a cutting medium adjacent to the laser head and parallel to the axis of the laser head. A processing head of a thermal cutting processing device, characterized by comprising a medium head.