JPS6221496A - Laser beam cutting and processing machine - Google Patents

Abstract

PURPOSE:To decrease the intake amt. of air except discharge gas and to improve the discharging efficiency of the discharge gas by contg. plural frog pins to be imposed with a work in a pin holder and dropping cutting pieces onto a honeycomb plate provided to enclose the frog pins. CONSTITUTION:The gas generated by melting or burning of the work 5 and the air around the work 5 are mixed and the mixture passes the meshed cavity part of the honeycomb plate 8 and is discharged through the lower space part of a holder 10, an aperture part 12, a discharge hose and blower to the outside during laser beam processing. The cut pieces 19 when formed from the work 15, fall onto the plate 8. The intake ports for the air 20, 21, etc. to be discharged from the gaps in the peripheral part, etc. of the work 5, the pieces 10 and a holder 10 is small in area; therefore, the mixing ratio of the air for discharge with a processing gas 11, etc. is kept small. The sizes of the aperture part 12, a discharge device such as discharge hose and blower, etc. are thus reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention of B focuses laser light (7) and irradiates the workpiece with
The present invention relates to a laser cutting machine that performs cutting, and particularly to an exhaust device that is effective when the workpiece is made of synthetic resin and tends to generate smoke during cutting.

[Prior art] When cutting is performed by focusing a high-energy laser beam and irradiating the workpiece with the focused beam while injecting a processing gas such as nitrogen gas from the nozzle hole,
When the workpiece is metal, gas is generated as it melts. In addition, especially when the workpiece is made of synthetic resin, a combustion phenomenon occurs during cutting, and a large amount of gas is generated compared to the case of metal. An exhaust device is provided to discharge the gas to the outside by driving a blower or the like.

[Problem that the invention seeks to solve]

In a conventional laser cutting machine such as the one shown in L, the entire processing chamber in which the laser cutting machine is installed is evacuated in order to exhaust the gas generated during processing, so a blower is required for the exhaust system. -Oh. 1 and exhaust gases become a big deal, and there are problems such as increased noise and the inability to completely exhaust the air due to the gases listed in 1-1 being mixed into the air in the chamber.

This invention has been made to solve the above-mentioned problems.It is an object of the present invention to provide a laser cutting machine that can efficiently exhaust gas and waste generated during machining using a small-capacity exhaust device. With the goal.

[Means for solving problems]

Laser cutting processing machine according to the invention of Party B [], where the workpiece to be welded is placed and multiple swordsman pinots are stored and instructed (7 swords 1) 1 pin holder - 1 is in the form of a receptacle with only a part open Formed into (7
, From the tips of the plurality of tsurugisan pins (Vi), a honeycomb plate should be provided below the tsurugisan pins surrounding the tsurugisan pins, and an L-shaped plate should be attached to the exhaust hose attached to the opening provided on one side of the holes of the tsurugisan pins. 17, so that the gas generated during heating is discharged to the outside air.

``Function'' In this invention, the gas generated during processing is discharged from the openings of the workpiece through the mesh-like voids of the honeycomb plate, and the air around the workpiece is - from the slight gap between the bottom surface of the object and the holder,
After the workpiece is cut, the gas mixes with the V gas and is discharged into the evening air through the C opening.

〔Example〕

FIG. 1 is an overall configuration diagram of a cutting machine according to an embodiment of the present invention. In the figure, (111;l:
l/- laser oscillator, (2) is the laser beam, (3) is the pend mirror that refracts the first light (2), +41 is 1/-
Processing in which the light (2) is focused and irradiated from the nozzle jL・＼・
Sol+, +51 is the object to be machined, (6) is the focused laser beam (2) and the supply pipe for the machining gas that is injected to the workpiece (5), and (7) is the workpiece. A plurality of tsurugisan pins supporting the object (5), (8) are made of a honeycomb board with a mesh-like hollow part connected to each other.
7) Tip part, l: 3J located slightly towards 1S
The holding plate (9) holds the sword pins (7) together with a part of the holder (10) shaped like a container. (11) is processed and bent ( (12) is an opening provided on the side of the holder (10), (13) is an exhaust blower, and (14) is an opening ( 12) and blower
(13) Exhaust hose connecting to (151 is the blower)
(1: Gas absorbed by () is discharged to the outside 'A' duct, (16) is the X-axis table, (17) is the Y-axis table,
(18) is a column that supports such things as machining and sodo (4).

To Party B's invention configured as above. In a laser processing machine, a laser beam (2) emitted from a laser oscillator (1) is refracted by a pend mirror (3), focused by a focusing lens provided in a processing bed (4), and is deflected by a nozzle to cause processing gas. The workpiece (5) is irradiated 17 with the injection of
The cutting process is performed by moving the X-axis table (16) and Y-axis table according to a predetermined cutting shape. During this processing, the gas generated by the melting or combustion of the workpiece (5) and the air surrounding the workpiece (5) mix and pass through the mesh-like cavity of the honeycomb plate (8). , holder (1
0), and the exhaust duct 1 via the exhaust hose (14) (7) by the suction action of the blower (13).
- (It is designed to be discharged to the outside air from 151.

Figure 2 shows the gas generated during the above processing and the workpiece (5)
(4) is a cutaway diagram for explaining the state in which air is mixed with surrounding air and discharged, and (4), (7), (8)
, (10) to (12) are the same parts as the same reference numerals in FIG. (19) is the cut piece (2
0) is the exhaust air sucked into the space of the workpiece (5) formed by this cut piece (19), and (21) is the exhaust air sucked into the space between the perforated object (5) and the holder (10). The discharge air (20) is drawn into the honeycomb through the gap between the space of the workpiece (5) and the cut piece (19) due to the action of negative pressure at the opening (12). The exhaust air (21) is discharged via the plate (8) and the workpiece (
5) and the 9L rehoneycomb plate (8) around the periphery of the holder (10), so the area of the inlet of these discharge holes fi (20) and (21) is Since it is small, the mixing ratio for the processing gas (11) etc. to be discharged is suppressed to a low level.
, a blower (13), etc., and then exhausted to the outside air.

〔Effect of the invention〕

As explained above, in the invention of O, a holder for storing a plurality of pins on which a workpiece is placed is formed into a V-shaped container, and the cut pieces are dropped onto a honeycomb plate 1- provided surrounding the pins. In this way, the intake amount of f air can be suppressed to be smaller than the target gas for #jP output, so IJ
The suction efficiency of the emitted gas is 11, which has the effect of accurately discharging the gas.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a laser cutting machine according to an embodiment of the present invention, and Fig. 2 is a sectional view for explaining the operation of discharging gas generated during processing in Fig. 1. It is. In the figure, (2) is the laser beam, (5) is the workpiece, (
7) is the Kenzan pill, (8) is the honeycomb plate, (101 is the holder, (12) is the opening, (13) is the blower 1 (14)
is an exhaust hose O. Note that the same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

[Claims] In a device that performs cutting by focusing a laser beam and irradiating it onto a workpiece, the device surrounds a plurality of pins on which the workpiece is placed, and has an upper end surface located slightly below the tips of these pins. a honeycomb plate provided as shown in FIG. A laser cutting machine that is equipped with a blower connected to an exhaust hose to exhaust gas generated during processing to the outside air.