JP2000015473A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser beam machine capable of dropping a product from a shooter table and surely recovering it, and at the same time capable of surely collecting spatter and assistant gas generated during laser machining to assure safety and improve working circumstances. SOLUTION: A work is positioned just below a laser beam machining head, cutting is executed by irradiating laser beam from a laser head, and then a cut off product S is made to slip down out of a shooter table 21 coming turned about and is carried out. In this occasion, by an air blowing means 37, the air is blown against the under surface of the work from the down side of a cartridge 27 to prevent the work from adhering to the shooter table 21.

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, and more particularly, to a laser beam machine having a characteristic in a product shooter portion.

[0002]

2. Description of the Related Art FIGS. 6 (A) and 6 (B) show the essential parts of a conventional laser / punch compound machine. The processing machine 1 will be described. Since the laser beam machine 1 is already well known, only its outline will be described.

The laser beam machine 1 has a carriage base 3 which can be moved and positioned in the Y-axis direction, and a carriage 5 which can be moved and positioned in the X-axis direction in the carriage base 3. The work W is provided by a pair of clampers 7 which are provided at the intervals 5 so as to be adjustable.
To grip.

At the time of machining, in the case of punching, the work W is positioned on the machining table 9 by the carriage base 3 and the carriage 5 at the punch center 11, and the punch P provided on the upper turret 13 and the lower turret are provided. The punching process is performed in cooperation with a die D provided at 15.

In laser processing, the work W is moved and positioned to the laser center 19 immediately below the laser processing head 17, and the laser light is irradiated from the laser processing head 17 onto the work W to perform cutting. On the processing table 9 below the laser processing head 17, a shooter table 21 for collecting the cut product S is rotatably provided.

Referring to FIGS. 7A and 7B, a product obtained by cutting a workpiece W placed on a processing table 9 by a laser beam emitted from a laser processing head 17 in a laser processing machine 1. In S, the shooter table 21 is tilted by the air cylinder 23 to slide down on the shooter table 21. Dust and the like generated during the cutting process are collected by a dust collector (not shown) through a dust collecting pipe 25. At the center of the shooter table 21, a cartridge 27 for guiding a sputter SP generated by laser processing downward is provided through the shooter table 21. Also, referring to FIG. In 1, spatters SP scattered on the upper surface of the work W during processing are prevented from scattering by the head cover 29.

[0007]

However, referring to FIG. 9, in cutting by the laser beam machine 1, the cutting width (kerf width α) is, for example, 0.15 mm to 0.2 mm.
Therefore, depending on the thickness of the work W and the complicated product shape (see FIG. 10), there is a problem that the product S may be caught on the work W and not separated from the shooter table 21 without being separated.

In the above-mentioned collection of the product S, as shown in FIG.
Since the negative pressure of the dust collector remains in the cartridge 27 when it is carried out from the cartridge 1, there is a problem that the small product S may be sucked onto the cartridge 27 and not fall from the shooter table 21.

When the product S does not stick to the cartridge 27 and does not drop, even if the dust collector is stopped, it takes time for the blower to stop. There is a problem that automatic driving is hindered because of its stability.

Further, as shown in FIG. 8, when the spatter SP generated during the laser processing scatters between the work W and the shooter table 21, the cartridge 27
Therefore, there is a problem that the die D becomes dirty and the processing table 9 is damaged because dust cannot be collected.

Further, there is a problem that a fire may be caused by igniting the oxygen gas contained in the oil or the assist gas attached to the work W by the spatter SP, or the working environment may be deteriorated by dust.

An object of the present invention is to pay attention to the above-mentioned prior art, and it is possible to reliably recover a product by dropping it from a shooter table and to reliably remove spatter and assist gas generated during laser processing. Another object of the present invention is to provide a laser beam machine capable of collecting data and improving safety and improving the working environment.

[0013]

According to a first aspect of the present invention, there is provided a laser processing machine, wherein a laser beam is applied to a workpiece positioned immediately below a laser processing head by a laser beam. A laser processing machine that releases a cut product from the cartridge of a shooter table that is rotatably provided directly below the laser processing head and drops the cut product by the opened shooter table. And air blowing means for blowing air from below the cartridge of the chute table in the open state to slide down the product on the chute table.

Therefore, the work is positioned directly below the laser processing head, the laser processing head irradiates a laser beam to perform cutting processing, and the cut product is dropped from the rotated shooter table and carried out. At this time, air is blown to the lower surface of the work from below the cartridge by the air blowing means to prevent the work from adhering to the shooter table.

According to a second aspect of the present invention, there is provided a laser beam machine.
In the laser processing machine described above, a dust collection pipe that is provided below the cartridge to support the cartridge at the time of operation and to be lowered and lowered at the time of unloading the product to open the shooter table, A guide rail horizontally provided at the upper end of the pipe, and rotatably provided at the lower end of the cartridge to movably support the lower end of the cartridge along the guide rail when the dust collection pipe descends. And a roller.

Accordingly, when the dust collecting pipe supporting the shooter table from below is lowered and the shooter table is rotated downward, the rollers provided below the cartridge of the shooter table are rotated by the rollers of the dust collecting pipe. It moves along the guide rail provided at the upper end.

According to a third aspect of the present invention, there is provided a laser processing machine which irradiates a laser beam to a work positioned just below a laser processing head and drops the cut product from a shooter table provided rotatably downward. A laser processing machine, which is provided around the shooter table and has a plurality of dust collecting ducts provided around the shooter table and provided with a large number of holes for dust collection on an upper surface thereof. .

Therefore, when the work is positioned directly below the laser processing head and the laser processing head irradiates the laser beam to perform cutting processing, the upper surface of the chute surrounding dust collecting duct provided around the chute table is provided. Dust and assist gas are sucked from the hole.

The laser beam machine according to the fourth aspect is the third aspect of the invention.
In the laser processing machine described above, a heat-resistant sheet for preventing scattering of spatter and assist gas generated during laser processing is provided around the chute dust collecting duct.

Therefore, the heat-resistant sheet provided on the outer circumference of the dust collecting duct around the shooter prevents spatters generated during the cutting process by the laser beam and scattering of the assist gas after use.

According to a fifth aspect of the present invention, there is provided a laser processing machine in which a sputter generated during a cutting process performed by irradiating a laser beam to a work positioned just below a laser processing head is rotatably provided directly below the laser processing head. A laser processing machine that releases the cut product from the cartridge of the shooter table to the lower side, drops the cut product by the opened shooter table, and carries out the product, and is provided to adsorb the product to the shooter table. It is characterized by comprising suction means.

Accordingly, the work is positioned directly below the laser processing head, and the spatter generated when the laser processing head irradiates the laser beam to perform cutting processing is released downward from the cartridge provided on the shooter table. When the cutting is completed, the product is separated from the workpiece by rotating the shooter table downward in a state where the suction means provided on the shooter table sucks the product.

The laser beam machine according to claim 6 is a laser beam machine according to claim 5.
In the above described laser beam machine, the suction means is a high static pressure dust collector connected to the cartridge.

Accordingly, when the cutting is completed, the product is separated from the workpiece by rotating the shooter table downward with the high static pressure dust collector connected to the cartridge of the shooter table adsorbing the product.

[0025]

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

FIGS. 1A and 1B show a laser processing machine 1.
Is shown in FIG. In addition,
Since the outline of the laser beam machine 1 has already been described with reference to FIG. 6, the same portions are denoted by the same reference numerals, and a duplicate description will be omitted.

Referring to FIGS. 1A and 1B, a shooter table 21 is provided at a part of the processing table 9 of the laser processing machine 1 so as to be rotatable about a pin 31 downward. This shooter table 21 has a cartridge 2
7 are provided. A dust collection pipe 25 is provided below the cartridge 27, and an air cylinder 23 is provided.
It can move up and down freely.

A roller 3 is provided below the cartridge 27.
The roller 33 is reciprocally movable back and forth along an upper surface of a guide rail 35 provided horizontally at the upper end of the dust collecting pipe 25 in the front-rear (left-right in FIG. 1) direction. It is provided in.

On the other hand, below the pin 31 on the front side (left side in FIG. 1) of the dust collection pipe 25, an air blow nozzle 37 as an example of air blowing means for blowing air toward the upper right direction in FIG. 1 is provided. It is provided in a direction toward the cartridge 27 when the shooter table 21 rotates downward.

With the above configuration, when the dust collection pipe 25 is lowered by the air cylinder 23 to drop the product S, the roller 3 provided below the cartridge 27 is provided.
3 is a guide rail 35 provided on the dust collection pipe 25
Move forward along. When the dust collecting pipe 25 is lowered and the lower end of the cartridge 27 is displaced from the dust collecting pipe 25, the air blow nozzle 37 blows air upward from below the cartridge 27 to release the product S from the shooter table 21. And drop it.

From the above results, when the product S is dropped from the shooter table 21, air is blown from below the cartridge 27, so that the product S is prevented from being attracted to the cartridge 27 due to the negative pressure of the dust collection, and is reliably prevented. The product S can be dropped from the shooter table 21. When the shooter table 21 is opened downward, the blower of the dust collector (not shown) may be braked and stopped quickly.

Next, referring to FIG. 2, a chute-around dust collection duct 39 is provided in a rectangular shape around the entire circumference of the chute table 21, and the inside of the chute-around dust collection duct 39 is provided. Is provided with the shooter table 21 rotatably downward. A large number of holes 41 are provided on the upper surface of the chute-around dust collection duct 39, and dust is collected by a dust collector (not shown) via the dust collection duct 43.

Referring to FIG. 3, in order to collect dust from each hole 41 as uniformly as possible, a dust collecting duct 39 around the shooter is used.
Is provided with a partition 45 therein. Also, referring to FIG. 4, on the outer peripheral upper part of the chute-around dust collecting duct 39,
A heat-resistant sheet 47 that blocks spatter and assist gas during laser processing is provided over the entire circumference.

With the above configuration, dust is collected not only by the cartridge 27 but also by the dust collecting duct 39 around the shooter during laser processing, and the heat-resistant sheet 47 blocks sputter and assist gas.

From the above results, the lower turret is used to prevent the heat-resistant sheet 47 from blocking the spatter and scattering to the lower surface of the work W, and to collect the spatter whose power has become weaker by the duster duct 39 around the shooter. In addition, it is possible to prevent dirt in the die D inside 15 and to prevent the fire and the working environment from being deteriorated by sucking the assist gas. A hole may be provided on the entire surface of the shooter table 21 to collect dust.

Next, referring to FIG.
A high static pressure dust collector 49 is used as a dust collector connected to the dust collection pipe 25 on the lower side of 7. Conventionally, for example, a cartridge diameter of 25 mm, a dust collector 0.75 kw, and an air volume of 3 m ³ /
min, a static pressure of 250 mm H ₂ O was used, but here, for example, a cartridge diameter of 25 mm,
Dust collector 3.7 kw, air volume 8 m ³ / min, static pressure 1000
A high static pressure dust collector 49 of mmH ₂ O is used.

With the above configuration, during cutting by the laser, dust is collected and the product S is loaded into the cartridge 2.
Suction to the 7 side. The product S is also sucked when the shooter table 21 is rotated downward after the cutting process is completed, and the product S is separated from the workpiece W by rotating the product S together with the shooter table 21 downward.

From the above results, it is ensured that the product W is sucked into the rotating shooter table 21 so that the work W
Can be separated from the shooter table 21
, The product S can be unloaded reliably.

In order to surely separate the product S from the work W, the work W is vibrated while the shooter table 21 is rotated downward, or air is blown from above the product S toward the product S. Alternatively, it is also possible to blow a processing assist gas from above the product S.

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes.

[0041]

As described above, in the laser beam machine according to the first aspect of the present invention, the workpiece is positioned immediately below the laser beam head, and the laser beam is irradiated from the laser beam head to perform the cutting process. The product is dropped from the rotated shooter table and carried out.At this time, air is blown from below the cartridge by the air blowing means to the lower surface of the work to prevent the work from adhering to the shooter table. Can be carried out reliably, and stable automatic operation can be performed.

In the laser processing machine according to the second aspect of the present invention,
When the dust collection pipe supporting the shooter table is lowered and the shooter table is rotated downward, the roller provided below the cartridge of the shooter table is provided at the upper end of the dust collection pipe. Since it moves along the guide rail, the shooter table that slides down the product can be reliably supported.

In the laser processing machine according to the third aspect of the present invention,
When the workpiece is positioned directly below the laser processing head and the laser processing head irradiates laser light to perform cutting processing, dust or assist from the hole on the upper surface of the chute around dust collection duct provided around the chute table Since gas or the like is sucked, it is possible to prevent fire, prevent deterioration of working environment, and prevent contamination of machines.

In the laser beam machine according to the fourth aspect of the present invention,
The heat-resistant sheet provided on the outer circumference of the dust collecting duct around the shooter prevents the spatter generated during the cutting process by the laser beam and the scattering of assist gas etc. after use, so that fire prevention, deterioration of the work environment, It is possible to prevent contamination of the machine.

In the laser processing machine according to the fifth aspect of the present invention,
The workpiece is positioned directly below the laser processing head, and the spatter generated when cutting is performed by irradiating laser light from the laser processing head is released downward from the cartridge provided on the shooter table. Since the suction means provided in the apparatus rotates the shooter table downward in a state in which the product is sucked, the product can be separated from the workpiece and the product can be reliably carried out.

In the laser processing machine according to the sixth aspect of the present invention,
When the cutting is completed, the high static pressure dust collector connected to the cartridge of the shooter table rotates the shooter table downward in a state where the product is adsorbed, so that the product can be separated from the work and the product can be reliably carried out.

[Brief description of the drawings]

FIGS. 1A and 1B are sectional views showing a shooter table portion of a laser beam machine according to the present invention.

FIG. 2 is a sectional view showing a shooter table portion of the laser beam machine according to the present invention.

FIG. 3 is a perspective view showing a dust collection duct around a shooter table.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is a sectional view showing a dust collector of a laser beam machine using a high static pressure dust collector.

FIGS. 6A and 6B are a plan view and a cross-sectional view showing a laser punch combined machine as a conventional laser processing machine.

FIGS. 7A and 7B are cross-sectional views showing the falling and unloading of a product in a conventional laser beam machine.

FIG. 8 is a cross-sectional view showing a head cover and the like for preventing scattering of spatter during laser processing.

FIG. 9 is an explanatory diagram showing a state in which a product after cutting is hooked on a work.

FIG. 10 is an example of a product having a complicated shape.

[Explanation of symbols]

 1 Laser Processing Machine 17 Laser Processing Head 21 Shooter Table 25 Dust Collection Pipe 27 Cartridge 33 Roller 35 Guide Rail 37 Air Blow Nozzle (Air Blowing Means) 39 Dust Collection Duct Around Shooter 41 Hole 47 Heat Resistant Sheet 49 High Static Pressure Dust Collector (Suction Means) ) W Work S Product

Claims (6)

[Claims] 1. A sputter generated during a cutting process performed by irradiating a laser beam onto a work positioned immediately below a laser processing head from a cartridge of a shooter table rotatably provided directly below the laser processing head. A laser processing machine that discharges a cut product by dropping it by an opened shooter table while discharging the cut product downward, and blows air from below the cartridge of the opened shooter table to blow the cut product onto the shooter table. A laser processing machine comprising air blowing means for sliding down a product. 2. A dust collection pipe, which is provided below the cartridge to support the cartridge at the time of operation and to be lowered when the product is carried out so as to move up and down to open the shooter table. A guide rail horizontally provided at an upper end portion, and a roller rotatably provided at a lower end portion of the cartridge to movably support the lower end of the cartridge along the guide rail when the dust collection pipe descends. The laser beam machine according to claim 1, further comprising: 3. A laser processing machine which irradiates a laser beam onto a work positioned just below a laser processing head and cuts a product from a shooter table provided rotatably downward to carry out the product. A laser processing machine, comprising: a chute-around dust collection duct provided around the chute table and provided with a number of holes for dust collection on an upper surface. 4. Around the chute surrounding dust collection duct,
4. The laser processing machine according to claim 3, further comprising a heat-resistant sheet for preventing scattering of spatter and assist gas generated during laser processing. 5. A sputter generated during a cutting process performed by irradiating a laser beam onto a work positioned immediately below a laser processing head from a cartridge of a shooter table rotatably provided directly below the laser processing head. A laser processing machine for releasing the cut product by dropping it by an opened shooter table while discharging the cut product downward, comprising suction means provided to suck the product to the shooter table. Laser processing machine characterized by the above-mentioned. 6. The laser beam machine according to claim 5, wherein said suction means is a high static pressure dust collector connected to said cartridge.