JPH09314372A - Laser processing machine - Google Patents

Abstract

(57) Abstract: It is an object of the present invention to provide a laser processing machine which automates the taking out of a laser cut product in laser processing and further suppresses the contact between the laser cut product and the laser torch. A laser processing machine for performing laser processing of a work as a plate material, wherein when the work 5 is installed in a vertical direction and cutting is performed, the laser cut object is a laser torch side with respect to the work 5 or vice versa. Removal means 1 to remove to the side
Laser processing machine equipped with 1.

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 for automatically removing a laser cut product in laser processing.

[0002]

2. Description of the Related Art Conventionally, when a work as a plate material is cut by a laser beam machine, the work is placed on a table, which is called a sword mountain, in which support bases are arranged in a grid pattern. In this case, did the laser cuttings separated from the work be taken out one by one by hand?
Alternatively, an uncut portion called a micro joint was made on the laser cut product, so that it did not fall from the work, the whole work was lowered from the table, and then the work was shaken to separate the uncut part and the laser cut product was taken out. .

[0003]

In the conventional laser processing machine, first, when the operator takes out the cut objects one by one from the table, the work is taken out one by one after the processing is completed. It took time and lowered the productivity of the laser processing machine. Also, the laser cutting remains on the sword mountain arranged in a grid pattern, but if the laser cutting is small to some extent, it does not remain on the sword mountain and is caught on the table in a form protruding from the work, and the remaining laser processing is performed. Sometimes, the laser torch hits the laser cut object and is damaged. Also using a micro joint,
In the case of taking out, there are problems that it takes time to separate the micro-joint portion, which is a post-process of laser processing, and it can be used only in the case of a thin plate.

Further, when the work is manually lowered from the table, it is difficult to take out the cut work due to its reduced strength, and the shape of the cut work is also taken out when the work is taken in and out by an automatic machine. It was necessary to consider the place where the work is hooked or the place where the work is sucked by a suction cup.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a laser processing machine which facilitates taking out a cut product.

[0006]

In order to achieve the above object, a laser beam machine according to the first aspect of the present invention, when a laser cutting machine is installed in a vertical direction of a work to perform a laser cutting process, a laser cut product is attached to a work. The laser torch side or the opposite side is provided with a take-out means for selectively taking off.

The laser beam machine according to the second aspect of the present invention uses an electromagnet device, which exerts a magnetic force on the laser cut product, on the side of the laser torch or on the opposite side thereof, as a means for taking out the laser cut product.

Further, the laser beam machine according to the third invention uses an air nozzle or a suction cup for exerting a gas pressure on the laser cut object on the side of the laser torch or on the opposite side thereof as a means for taking out the laser cut object.

Further, the laser beam machine according to the fourth aspect of the present invention uses, as a means for taking out the laser cut product, a hammer device for exerting a mechanical impact on the laser cut product on the laser torch side or the opposite side.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The laser beam machine according to the first aspect of the present invention has an action of separating a laser-cut object from a work by laser-cutting means.

Further, the laser cutting machine according to the second aspect of the present invention can separate the laser cut product in the material that is attracted by the magnetic force such as iron by the electromagnet device that exerts a magnetic force on the force applied to the laser cut product. It has the effect that it can be used regardless of the shape of the object.

Further, in the laser beam machine according to the third aspect of the invention, a force is applied to the center side of the laser cut product in consideration of the shape of the cut product by an air nozzle or a suction cup that exerts a gas pressure on the force applied to the laser cut product. By doing so, it is possible to use it even for a material whose work is not attracted by magnetic force.

Further, in the laser processing machine of the fourth invention, when a mechanical impact is exerted on a laser cutting object during laser cutting, the shape of the laser cutting object is changed as in the case of using gas pressure. By considering the force to be applied to the center side of the cut object, it can be used for materials that are not attracted by magnetic force such as iron, and it is easy to separate relatively large laser cut objects due to mechanical impact. By doing so, it has an effect of surely separating the laser cut object from the work.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 8. (Embodiment 1) First, Embodiment 1 of the present invention will be described with reference to FIGS.

In FIG. 1, a laser beam output from a laser oscillator 1 is guided to a processing point through a laser duct 2 which is expandable and contractible in X-axis, Y-axis and Z-axis. At this time, the laser light is refracted by 90 degrees in the Y-axis direction and the Z-axis direction by the mirror 3. At the processing point, the laser light is focused by the condenser lens housed in the laser torch 4, and the work 5 is cut by the thermal energy of the condensed laser light. The position of the mirror 3 for refracting the laser light and the output of the laser are controlled by a numerical control device (not shown), and by issuing a machining program to the numerical control device, the work 5 can be arbitrarily set. Cut into shapes. The mirror 3 is moved in the X-axis and Y-axis directions by the rotation of hollow motors M, which rotate the X-axis ball screw 6 and the ball screw 7. In FIG. 1, the X axis is a direction perpendicular to the direction in which laser light is emitted from the laser oscillator 1, the Y axis is a vertical direction, and the Z axis is a direction perpendicular to the X axis and the Y axis. The work 5 is suspended by the upper holding device 8, and the work 5 is pulled by the lower holding device 9. The upper holding device 8 and the lower holding device 9 are provided in a carry-in / carry-out device 10 for carrying out and carrying in the work 5, and the work 5 is moved to a processing position by an automatic machine.
Is carried in and the work 5 is processed.

In FIG. 2, the take-out means 11, 11 are moved by the rotation of the hollow motors M, M onto the planes of the X-axis and the Y-axis via the ball screws 6, 7, 7 ', and the laser cut object falls. It is installed so that Further, the work receiving slope 12 is arranged so that the dropped laser cutting product is not deformed by the impact due to the drop. The laser shield plate 13 is for preventing the laser light penetrating the work 5 from passing to the rear of the laser processing machine.

3 (a) and 3 (b) are explanatory views showing a procedure for selectively taking out the laser cut product. When making a rectangular laser-cut object having a daruma-shaped hole as shown in FIG. 3 (a), first the daruma-hole is cut by a laser, and the laser-cut object is processed by the work 5 shown in FIG. 3 (b). Is taken out as an unwanted matter in the direction of arrow a on the opposite side of the laser torch 4. Further, the outer peripheral rectangle is cut, and it is taken out as a necessary object in the direction of arrow B on the laser torch side. As a result, the necessary cut object is dropped on the laser torch side of the work and the unnecessary object is dropped on the opposite side of the laser torch, and the necessary object and the unnecessary object can be separated at the time of cutting. In the first embodiment, the necessary object is on the laser torch side (arrow B direction) and the unnecessary object is on the opposite side (arrow A direction), but the opposite configuration is also possible.

Further, when it is not necessary to separate the necessary material and the unnecessary material, it is possible to arrange the laser cutting material on either the laser torch side or the opposite side of the work 5. .

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG.

FIG. 4 shows that the laser cut product is attracted by magnetic force and is taken out from the work 5 in order to select the laser cut product. In FIG. 4, the electromagnet 14 is used to generate a magnetic force when it is desired to draw the laser cut product, but a permanent magnet may be used to bring the product closer to the cut product when necessary. The take-out means utilizing this magnetic force can be used only for a work easily attracted by a magnetic force such as iron. However, since the magnetic force is uniformly generated at the tip of the laser torch 4, it can be adsorbed regardless of the shape of the laser cut product. For example, in the processing patterns shown in FIGS. 5A and 5B, in any of the patterns of FIGS. 5A and 5B,
Can be used. That is, FIG. 5A shows a pattern in which laser cutting is completed at the upper side.
The take-out means is installed below. Further, FIG. 5B shows a pattern in which the laser cutting is completed at the lower side, and it is advisable to mount the take-out means above the laser torch 4.

(Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 6 shows a take-out means for selecting a laser cut product of a synthetic resin work which is not attracted by magnetic force. That is, by ejecting air from the air nozzle 15 when the laser cutting is completed, the laser cut object can be taken out from the work 5 to the laser torch side or the opposite side.

Further, FIG. 7 also shows a take-out means for taking out the laser cut product from the work by utilizing the pressure of gas. This sucks in air from the center of the suction cup 16 to suck the laser-cut object and adsorb it. Further, by feeding air from the center of the suction cup 16, the laser cut product can be taken out to the laser torch side or the opposite side.

Regarding the means for taking out the laser-cut material using the pressure of the gas described with reference to FIGS. 6 and 7, while the material not adsorbed by the magnet can be taken out, the air nozzle 15 or the suction cup 16 is attached to the laser torch 4. As described above, it is necessary to select one of the processing patterns shown in FIGS. 5 (a) and 5 (b) depending on whether it is mounted on the upper side or the lower side.

Further, in the case of adsorbing and taking out the laser-cut material by the suction cup 16, the laser-cut material is adsorbed and carried to an outlet for the required material and an outlet for the unnecessary material so that only the front surface of the workpiece can be ejected. It is possible to sort out the necessary cut products and unnecessary cut products.

(Fourth Embodiment) Next, a fourth embodiment of the present invention will be described with reference to FIG.

FIG. 8 shows that the laser cut product is mechanically struck to take out the work 5 to the rear or the front. That is, when the cutting is completed, the laser cutting object is hit by the hammer device 17, so that the laser cutting object is ejected to the back or front of the work 5. The take-out means can surely fly the laser cut product by the hammer device 17, and can separate the relatively large laser cut product. Note that the fourth embodiment can also be used for a material that is attracted by a magnetic force as in the case where the pressure of gas is used, but as described above, it is necessary to select the laser processing pattern of FIGS. 5A and 5B. Becomes

As described above, the take-out means of the first to fourth embodiments uses the same force when taking out the work forward and when taking it out behind the work, but uses different forces in the take-out direction. Is also possible. For example, by providing the electromagnet and the air nozzle on the side of the laser torch, it is possible to select the take-out direction without providing a device for taking out at the rear.

[0029]

As described above, the laser beam machine according to the first aspect of the present invention, when the workpiece is installed in the vertical direction and laser cutting is performed, the laser cutting object is placed on the laser torch side or the opposite side of the workpiece. It is equipped with a means for removing
It becomes easier to take out the laser cut product, the takt time of laser processing can be increased, and the laser cut product can be taken out from the work without fail. It has an excellent effect that it is possible to prevent the cut laser cut object from being caught on the sword mountain and contacting the laser torch and the laser cut object in the subsequent processing.

In addition to the effect of the first invention, the laser processing machine of the second invention has an excellent effect that is optimal for laser processing a work that is attracted to a magnet such as an iron plate.

In addition to the effect of the first invention, the laser processing machine of the third invention,
It has an excellent effect on laser processing a synthetic resin work or the like.

Further, in addition to the effect of the first invention, the laser processing machine of the fourth invention takes out a cut product even in a work which is not attracted to a magnet such as an iron plate, or when laser processing a large and heavy work. It has an excellent effect that it is easy and reliable.

[Brief description of drawings]

FIG. 1 is a front view of a laser beam machine according to Embodiment 1 of the present invention.

FIG. 2 is a side view of the laser processing machine according to the first embodiment.

FIG. 3 is a diagram showing a procedure for selectively taking out a laser cut product.

FIG. 4 is a schematic side view of essential parts of a laser beam machine according to Embodiment 2 of the present invention.

FIG. 5A is a plan view showing an example of a laser cutting pattern. FIG. 5B is a plan view showing two examples of a laser cutting pattern.

FIG. 6 is a schematic side view of essential parts of a laser beam machine according to a third embodiment of the present invention.

FIG. 7 is a schematic side view of an essential part showing a similar example of the third embodiment.

FIG. 8 is a schematic side view of essential parts of a laser beam machine according to the fourth embodiment.

[Explanation of symbols]

 4 Laser torch 5 Work piece 11 Extracting means 14 Electromagnet 15 Air nozzle 16 Sucker 17 Hammer device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hidenosuke Nakamura Inventor Hidenosuke Nakamura 1006, Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A laser beam machine for laser-working a work as a plate material, wherein when the work is installed in a vertical direction and laser-cutting is performed, the laser-cut object is on the laser torch side of the work or vice versa. A laser beam machine equipped with a take-out means for selectively removing the side. 2. A laser processing machine using an electromagnet device for exerting a magnetic force on the laser cut product on the side of the laser torch or on the opposite side thereof as a means for taking out the laser cut product. 3. A laser processing machine using, as a means for taking out a laser cut product, an air nozzle or a suction cup for exerting a gas pressure on the laser cut product on the laser torch side or the opposite side. 4. A laser beam machine using, as a means for taking out a laser cut product, a hammer device which exerts a mechanical impact on the laser cut product on the laser torch side or the opposite side.