JP3287223B2 - Laser processing machine - Google Patents

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 object in laser processing.

[0002]

2. Description of the Related Art Heretofore, when a workpiece as a plate material is cut by a laser beam machine, a workpiece is mounted on a table called a sword mountain on which a support base is arranged in a grid pattern. In this case, the removal of the laser cut object separated from the work was taken out one by one by hand,
Alternatively, an uncut portion called a microjoint was made in the laser cut object, the entire work was lowered from the table so as not to fall off the work, and then the work was shaken etc. to separate the uncut portion and take out the laser cut material .

[0003]

In the conventional laser beam machine, first, when the operator takes out the cut pieces one by one from the table, it is necessary to take out the workpieces one by one after the machining is completed. It took time and reduced the productivity of the laser processing machine. In addition, the laser cut object remains on the sword mountain arranged in a lattice shape, but if the laser cut object is small to some extent, it does not remain on the sword mountain but is caught on the table in a form protruding from the work and performs the remaining laser processing. There was a drawback that the laser torch sometimes hit the laser cut object and was damaged. Also, using a micro joint,
When taking out, there are problems that it takes a long time to separate the microjoint as 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, the cut work is difficult to be taken out due to reduced strength, and when the work is taken out by an automatic loading / unloading machine, the shape of the cut work is also reduced. Therefore, it is necessary to consider a place where the work is hooked or a place where the work is sucked by a suction cup or the like.

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

[0006]

In order to achieve the above object, a laser beam machine according to a first aspect of the present invention provides a laser beam machine as a plate material.
And a holding device for holding vertically a torch for laser cutting of the workpiece, of the laser cutting was必
Important and unwanted objects are on opposite sides of the workpiece
In this way .

Further, the laser beam machine of the second invention uses an electromagnet device which exerts a magnetic force on the laser cut object on the side of the laser torch or on the opposite side as a means for extracting the laser cut object.

Further, the laser processing machine of the third invention uses an air nozzle or a suction cup which exerts a gas pressure on the laser cut object on the side of the laser torch or on the side opposite to the laser torch as a means for extracting the laser cut object.

In the laser processing machine according to a fourth aspect of the present invention, a hammer device for applying a mechanical impact to the laser cut object on the side of the laser torch or on the opposite side thereof is used as a means for extracting the laser cut object.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A laser processing machine according to a first aspect of the present invention cuts a laser cut object from a workpiece by a cutting means during laser cutting.
Necessary items and unnecessary items can be separated at the time of disconnection .

The laser cutting machine according to the second aspect of the present invention can separate a laser cut object from a material that is attracted by a magnetic force, such as iron, by an electromagnet device that applies a magnetic force to a force applied to the laser cut object. It has a function that can be used regardless of the shape of the object.

Further, in the laser beam machine according to the third aspect of the present invention, a force is applied to the center of the laser cut object in consideration of the shape of the cut object by an air nozzle or a suction cup which exerts gas pressure on the force applied to the laser cut object. By doing so, the workpiece can be used for a material that is not attracted by magnetic force.

The laser beam machine according to the fourth aspect of the present invention, when applying a mechanical shock to the laser cut object at the time of laser cutting, changes the shape of the laser cut object in the same manner as when utilizing the gas pressure. in the this to make the center side to the force of the cutting material in consideration is applied, it can also be used for materials that are not attracted by the magnetic force such as iron, the separation of the relatively large laser cutting material in order to use the mechanical impact By easily performing this, it has an effect of always separating the laser cut object from the work.

An embodiment of the present invention will be described below in detail with reference to FIGS. (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 can be freely extended and retracted in X, Y and Z axes. At this time, the laser beam is refracted 90 degrees by the mirror 3 in the Y-axis direction and the Z-axis direction. At the processing point, the laser beam is focused by the condenser lens contained in the laser torch 4 and the work 5 is cut by the thermal energy of the collected laser beam. The position of the mirror 3 for refracting the laser light and the output of the laser are controlled by a numerical controller (not shown). Cut into shapes. The mirror 3 moves in the X-axis and Y-axis directions by the rotation of hollow motors M that 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 loading / unloading device 10 for loading / unloading the workpiece 5, and the workpiece 5 is moved to a processing position by an automatic machine.
And the work 5 is processed.

In FIG. 2, the take-out means 11, 11 are moved on the X-axis and Y-axis planes via the ball screws 6, 7, 7 'by the rotation of the hollow motors M, M, and the laser cut object falls. It is attached so that it does. The work receiving slope 12 is provided so that the dropped laser cut object is not deformed by the impact of the fall. Further, the laser shielding plate 13 is for preventing the laser beam penetrating the work 5 from passing through the rear of the laser processing machine.

FIG. 3 is an explanatory diagram showing a procedure for selectively taking out a laser cut object. When creating a rectangular laser cutting of the potbelly-shaped hole is vacant as shown in FIG. 3, first, a potbelly hole is cut by a laser, on the opposite side of the laser torch 4 of the workpiece 5 shown the laser cutting was 3 Remove as unnecessary items. Further, the outer peripheral rectangle is cut and taken out to the laser torch side as necessary. As a result, a necessary cut object is dropped on the laser torch side of the work, and an unnecessary object is dropped on the opposite side of the laser torch, so that the unnecessary and unnecessary objects can be separated at the time of cutting. In the first embodiment,
Requisites The laser torch side and unnecessary substances are the opposite is also possible configuration of the opposite.

[0018]

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIG.

FIG. 4 shows a state in which a laser cut object is attracted by a magnetic force to remove the laser cut object from the work 5 in order to select the laser cut object. In FIG. 4, a magnetic force is generated when it is desired to draw a laser cut object using the electromagnet 14. However, a permanent magnet may be used to take out the laser cut object by bringing it closer to the cut object when necessary. The take-out means using this magnetic force can be used only for a work which can be easily attracted by a magnetic force such as iron. However, since a magnetic force is uniformly generated at the tip of the laser torch 4, it can be attracted regardless of the shape of the laser cut object. For example, in the processing patterns shown in FIGS. 5 (a) and 5 (b), in any of the patterns (a) and (b),
Can be used. That is, FIG. 5A shows a pattern in which laser cutting is completed at the top, and the laser torch 4
Attach the take-out means underneath. FIG. 5B shows a pattern in which the laser cutting is completed below, and it is preferable to mount an extraction means above the laser torch 4.

(Embodiment 3) Next, Embodiment 3 of the present invention will be described with reference to FIGS.

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

FIG. 7 also shows an extracting means for extracting a laser cut object from a workpiece by using gas pressure. This sucks air from the center of the suction cup 16 to suck and adsorb the laser cut object. Further, by sending air from the center of the suction cup 16, the laser cut object can be taken out to the laser torch side or the opposite side.

The laser cutting means utilizing the gas pressure described with reference to FIGS. 6 and 7 can take out the material which is not adsorbed by the magnet, but on the other hand, attaches the air nozzle 15 or the suction cup 16 to the laser torch 4. On the other hand, depending on whether it is mounted on the upper side or the lower side, one of the processing patterns shown in FIGS. 5A and 5B must be selected as described above.

In the case where the laser cut object is sucked and taken out by the suction cup 16, the laser cut object is sucked and carried to a necessary object takeout port and an unnecessary object takeout port, so that only the work front can be taken out. Necessary and unnecessary cuts can be sorted out.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described with reference to FIG.

FIG. 8 shows that the laser cut object is taken out behind or in front of the work 5 by mechanically hitting it. That is, by hitting the laser cut object by the hammer device 17 when the cutting is completed, the laser cut object is skipped behind or forward of the workpiece 5 to be taken out. This take-out means can reliably fly the laser cut object by the hammer device 17 and can also separate a relatively large laser cut object. The fourth embodiment can also be used for a material that is attracted by magnetic force as in the case of using gas pressure, but as described above, it is necessary to select the laser processing pattern shown in FIGS. Becomes

In the above-described embodiments, the taking-out means of Embodiments 1 to 4 use the same force when taking out the work in front of the work and when taking it out behind the work, but use different forces in the take-out direction. Is also possible. For example, by providing an electromagnet and an air nozzle on the side of the laser torch, it is possible to select a take-out direction without providing a rear take-out device.

[0029]

As described above, the laser beam machine according to the first aspect of the present invention, when performing a laser cutting process by placing a workpiece in a vertical direction, places the laser cut object on the laser torch side or the opposite side of the workpiece. Is provided with a removal means to remove
The removal of laser cuts becomes easier, the tact time of laser processing can be increased, and the laser cuts can be removed from the workpiece without fail. In addition, there is an excellent effect that it is possible to prevent the cut laser cut object from being caught by the sword and to prevent the laser torch from contacting the laser cut object in the subsequent processing.

The laser beam machine according to the second aspect of the invention has, in addition to the effects of the first aspect of the invention, an excellent effect that is optimal for laser machining a workpiece that is attracted to a magnet such as an iron plate.

Further, in addition to the effects of the first invention, the laser processing machine of the third invention provides a work which does not stick to a magnet such as an iron plate,
This provides an excellent effect in laser processing a synthetic resin work or the like.

In addition to the effects of the first invention, the laser processing machine according to the fourth aspect of the present invention can take out a cut object even when the workpiece is not attracted to a magnet such as an iron plate or when a large and heavy workpiece is laser-processed. Has an excellent effect of being easy and reliable.

[Brief description of the drawings]

FIG. 1 is a front view of a laser processing machine according to a first embodiment of the present invention.

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

FIG. 3 is a diagram showing a procedure for selectively removing a laser cut object.

FIG. 4 is a schematic side view of a main part of a laser beam machine according to a second embodiment of the present invention.

FIG. 5A is a plan view showing one 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 a main part of a laser beam machine according to a third embodiment of the present invention.

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

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

[Explanation of symbols]

 Reference Signs List 4 laser torch 5 work 11 taking-out means 14 electromagnet 15 air nozzle 16 sucker 17 hammer device

Continuation of the front page (72) Inventor Shunosuke Nakamura 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-228282 (JP, A) JP-A-5-208233 (JP) JP-A-6-99296 (JP, A) JP-A-5-57685 (JP, A) JP-A-63-180191 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB Name) B23K 26/00-26/42 B21D 45/04 B26D 7/18

Claims (4)

(57) [Claims] To hold the workpiece as claimed in claim 1] plate in the vertical direction
A holding unit that, laser for laser cutting of the workpiece
A laser processing machine provided with a torch and a take-out means for taking out necessary and unnecessary objects out of a laser cut object so that they are on opposite sides of a work. 2. The laser processing machine according to claim 1, wherein an electromagnet device that exerts a magnetic force on the laser cut object is provided on the laser torch side or on the opposite side thereof as a means for extracting the laser cut object. As extraction means 3. A laser cutting thereof, according to claim 1, wherein using the air nozzle or suction cup exerts pressure of gas to the laser torch side or laser cuttings on the opposite side thereof
Of the laser processing machine. 4. The laser beam machine according to claim 1, wherein a hammer device for applying a mechanical impact to the laser cut object is provided on a laser torch side or a side opposite to the laser torch side as a means for extracting the laser cut object.