JPH09206977A - Laser beam machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of machining defects of a work by providing the lower end of a pallet held a means for cleaning a work on a lower pallet at the lower end part of an upper pallet and allowing cut chips to fall down on the work thereby removing them. SOLUTION: With cutting completed on a work 3, the upper pallet 2a is carried out and moved onto the lower pallet 2b. When the lower pallet 2b is carried in into the loser beam machine, the cut chips 13 that fell on the work 3 on the lower pallet 2b are cleaned and removed with a brush 10 being a cleaning means 7, then falling on a collecting means 9 and being collected. Thus, the cut chips are cleaned and removed; therefore, the occurrence of machining defects of the work are prevented, enhancing productivity.

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 pallet changer device for loading and unloading a pallet on which a work is loaded.

[0002]

2. Description of the Related Art Conventionally, workpieces are loaded on a pallet,
A laser processing machine that performs laser processing is known. In this laser processing machine, the work that has been processed is carried out together with the pallet, and the next pallet is carried in for processing. As a laser processing machine having a pallet changer device for loading and unloading pallets of this type, Japanese Patent Laid-Open No. 6-19
There was a device shown in Japanese Patent No. 8483.

FIG. 6 is a side view showing the structure of a conventional device. In the figure, 1 is a laser processing machine for cutting and processing a work 3, a flat plate-shaped work 3 loaded on a pallet 2 is positioned at a processing position, and a laser beam is emitted from a processing head 4 of the laser processing machine 1. It is configured to output and cut the work 3 into a desired shape.

Usually, the work of loading the work 3 before cutting on the pallet 2 of the laser processing machine 1, the work 3 after cutting, that is, the product cut into a desired shape and the residual material such as scraps are processed. The work of taking it out from the top of the pallet 2 set in the laser processing machine 1 was difficult and required a considerable amount of time. For this reason, there is a problem in that productivity cannot be improved because laser cutting processing by the laser processing machine 1 cannot be performed during these setup operations.

To solve this problem, a pallet changer device 5 is used. By using the pallet changer device 5, the above-described setup work and the like can be performed outside the laser processing machine 1, so that the operating rate of the laser processing machine 1 can be increased and the productivity can be improved.

The pallet changer device 5 carries the pallet 2 in and out of the laser processing machine 1, and a pallet loading / unloading device 6 is provided corresponding to the laser processing machine 1. The pallet loading / unloading device 6 has a holding portion for holding the pallets 2 in a plurality of upper and lower tiers, that is, two tiers in the configuration shown in FIG. 6, and the upper pallet 2a and the lower pallet 2b have a lower pallet 2b as shown. In / out position and upper pallet 2a
It has the function of moving up and down to and from the in and out positions.

Further, the pallet loading / unloading device 6 moves the pallet 2 in the horizontal direction at each position, and transfers the pallet 2 between the laser beam machine 1 and the pallet loading / unloading device 6, that is, carries it in / out. It also has a function.

Therefore, by using the pallet loading / unloading device 6 of the pallet changer device 5 to perform the raising, lowering, and horizontal moving operations of the pallets 2a and 2b in sequence and in combination, the upper pallet 2a and the lower pallet 2b are carried out. Can be alternately put in and taken out from the laser processing machine 1, that is, the pallet changer can be operated.

By the way, in the case of laser cutting by the laser processing machine 1, the sheet-shaped flat plate work 3 itself is directly loaded (loaded) on the laser processing machine 1 by a magnet or a suction pad without using the pallet 2.
There is also a device for unloading the work 3 after cutting. However, in the case of such a device, a slight uncut portion (micro joint) is added to the cutting line (cutting line) to prevent the processed product cut into the desired shape and the residual material from separating during unloading. Was. For this reason, as a post-process, the time and effort for removing the micro joint have been generated.

As shown in FIG. 6, the method of stacking the work 3 on the pallet 2 and performing the cutting process realizes the above-described micro jointless (no) process that does not require the micro joint. It is a thing. The part of the pallet 2 that supports the work 3 is configured by a grid-like crosspiece or net having a finer mesh than the processed product cut into a desired shape, as in the case of processing the work 3 without using the pallet 2. ing. With this configuration, the processed product without the micro joint can be taken out without dropping from the supporting portion. Further, a part of the residual material and the waste material (cutting chips) are not supported by the supporting portion and fall to the lower side of the pallet 2.

The method of dropping the processed product from the support portion has problems such as scratches on the product and difficulty in sorting the product and the waste material, and therefore is not applied in many cases.

[0012]

The conventional laser processing machine is constructed as described above, and the cut product remains on the pallet 2 and remains after processing such as holes, waste material, etc. The cutting tip) is configured to drop below the pallet 2 and be collected by the laser processing machine 1 side. However, the cutting tip is caught by the work supporting portion of the pallet 2, and the pallet 2 is unloaded.
On the pallet loading / unloading device 6 side, that is, at the holding portion of the pallet 2, it may fall below the pallet 2.

In particular, when the cutting work of the work 3 on the upper pallet 2a is completed and the work 3 is carried out and moved to the lower pallet 2b on which the new work 3 is loaded, it is caught on the work supporting portion of the upper pallet 2a. The cutting tip will drop on the upper surface of the work 3 on the lower pallet 2b. Therefore, if the lower pallet 2b is carried into the laser processing machine 1 side as it is and the cutting process is performed, there is a problem that a processing defect occurs. Further, on the side of the pallet loading / unloading device 6 as well, there is a problem that the cutting chips that have dropped onto the lower part of the device, that is, the lower part of the holding part of the pallet and its surroundings are scattered, which makes cleaning difficult.

The present invention has been made in order to solve the above-mentioned problems of the conventional apparatus, and obtains a laser processing machine which prevents the occurrence of processing defects of the work and reduces the labor of cleaning the cutting tip. The purpose is to

[0015]

A laser beam machine according to the present invention is a laser beam machine for cutting a work loaded on a pallet by a laser, and a pallet held in a plurality of upper and lower stages is used as a laser beam machine. In a laser processing machine provided with a pallet changer device for loading and unloading, a cleaning means for cleaning the upper surface of the work on the pallet held in the lower stage is provided at the lower end of the pallet held in the upper stage.

The cleaning means is operated when the pallet held in the lower stage is carried into the laser processing machine.

Further, a collecting means for collecting the cleaning material cleaned by the cleaning means is provided below the pallets held in a plurality of upper and lower stages.

Further, in a laser processing machine for cutting a work loaded on a pallet by a laser, a laser processing machine provided with a pallet changer device for loading and unloading pallets held in a plurality of upper and lower stages into the laser processing machine. Cleaning means for cleaning the upper surface of the work on the pallet is provided between the holding portion of the pallets held in a plurality of upper and lower stages and the processing position of the work of the laser processing machine.

The cleaning means is operated when the pallet is carried into the laser processing machine.

Further, a recovery means for recovering the cleaned cleaning material is provided below the cleaning means.

Further, the cleaning means is a brush.

Further, the cleaning means is an air blow nozzle for blowing air.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment of the Invention Hereinafter, one embodiment of the present invention,
This will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view showing the overall configuration of this embodiment. In the figure, the same or corresponding parts as those of the conventional device shown in FIG. 6 are designated by the same reference numerals.

In the figure, 1 is a laser beam machine for cutting, 2a and 2b are pallets, 3 is a flat work, 4
Is a processing head, 5 is a pallet changer device, and 6 is a pallet loading / unloading device. 2a is the upper pallet, 2
Reference numeral b denotes a lower pallet. In this embodiment, an example of two upper and lower tiers is shown, but it may be held in a plurality of upper and lower tiers.

The cutting operation by laser light in the apparatus shown in FIG. 1 is the same as that of the conventional apparatus described above, and the upper and lower pallets 2a and 2b are alternately carried in and out of the laser processing machine 1, It operates so as to process and cut the works 3 stacked on the pallets 2a and 2b.

In the figure, 7 is the upper pallet 2
Cleaning means for the upper surface of the work 3 provided at the lower end of a, and 8 is the upper surface of the work 3 provided between the holding portions of the upper and lower pallets 2a, 2b and the processing position of the work 3 of the laser processing machine 1. The cleaning means 9 is a cutting tip recovery means.

FIG. 2 is a side view showing the structure of the embodiment in which the cleaning means 7 is provided at the lower end of the upper pallet 2a.

In the figure, numeral 7 is a cleaning means provided at the lower end of the upper pallet 2a for cleaning the upper surface of the work 3 on the lower pallet 2b. The cleaning means 7 is attached to the lower end of the upper pallet 2a so that the hinge plate 11 having the brush 10 attached to the tip thereof rotates. Reference numeral 12 is a stopper that limits the rotational movement of the hinge plate 11.

13 drops from the upper pallet 2a,
It is a cutting chip placed on the upper surface of the work 3 of the lower pallet 2b. In addition, 9 is a collecting means for the cutting chips 13 provided on the lower side of the pallets 2a, 2b which are held in two stages above and below.

Next, the operation of the embodiment shown in FIGS. 1 and 2 will be described. First, the upper pallet 2a is set on the laser processing machine 1, and the work 3 on the pallet 2a is
Laser cutting processing is performed. At this time, the work 3 before cutting is loaded on the lower pallet 2b. When the cutting work of the work 3 on the pallet 2a is completed and the process moves to the next operation, that is, when the pallet changing operation is performed, the upper pallet 2a is unloaded in the direction of arrow B in the drawing, and the upper pallet 2b is moved upward. Move to.

After that, the lower pallet 2b is carried in on the laser processing machine 1 side in the direction of arrow A in the figure. At this time,
It catches on the support part of the work 3 of the upper pallet 2a,
Holding portions for pallets 2a, 2b, that is, pallet loading / unloading device 6
On the side, the cutting tip 13 dropped on the upper surface of the work 3 of the lower pallet 2b is cleaned and removed by the brush 10 of the cleaning means 7 and dropped to the recovery means 9 to be recovered.

When the laser cutting process on the work 3 of the lower pallet 2b is completed and the pallet 2b is carried out under the upper pallet 2a, the product cut and processed on the work 3 becomes the pallet 2b. The work may be caught on the work support part and may be carried out while being tilted. in this case,
The hinge plate 11 is rotated in the direction of the arrow shown in the drawing so that the product does not collide with the cleaning means 7 and cause problems such as damage, so that the product is operated so as to avoid the collision. That is, the rotation of the hinge plate 11 is restricted by the stopper 12 only when cleaning is required, and the cleaning means 7 operates and operates effectively. The cutting tip 13 caught on the supporting portion of the work 3 of the lower pallet 2b does not cause any problem even if it falls in the holding portion of the pallet 2b, and falls directly to the collecting means 9 and is collected.

The cleaning means 7 includes a hinge plate 11
Although the cleaning means 7 is rotated by means of a rack / pinion or the like, a configuration is added in which the cleaning means 7 is vertically moved or rotated by using a driving means. Clean the top surface of
It may be configured to be separated from the work 3 when unnecessary.

Embodiment 2 of the Invention Next, another embodiment of the laser beam machine according to the present invention will be described with reference to FIGS.

FIG. 3 is a side view showing the structure of another embodiment. In the figure, reference numeral 8 denotes a cleaning means provided between the pallet loading / unloading device 6, that is, a holding portion of the pallets 2a and 2b held in two upper and lower stages, and the processing position of the work 3 of the laser processing machine 1. This cleaning means 8 has a brush 10 at the tip.
The hinge plate 11 to which is attached rotates and is attached to the end of the laser processing machine 1 by the support 15 together with the stopper 12 that limits the rotation of the hinge plate 11. In addition, 9 is a collecting means of the cutting tip 13 falling from the work 3, and is constituted by a box or the like.

Next, the operation of the embodiment shown in FIGS. 1 and 3 will be described. In this embodiment, as shown by the arrow in the drawing, when the pallet 2 is carried in to the laser processing machine 1 side (the direction of the arrow), the cleaning means 8 is activated and the cutting tip 13 on the upper surface of the work 3 is cut. Is cleaned before being loaded into the laser processing machine 1, dropped and collected. The action of the stopper 12 in the cleaning means 8,
The vertical movement or rotation of the cleaning means 8 is the same as in the embodiment shown in FIGS. 1 and 2.

Third Embodiment of the Invention Further, another embodiment of the laser processing machine according to the present invention will be described with reference to FIGS. FIG. 4 is a side view showing the structure of another embodiment, in which the cleaning means 7 shown in FIG. 2 is constituted by an air blow nozzle 17 and its piping 16. 5 is a side view showing the structure of another embodiment, and FIG.
The cleaning means 8 shown in (1) is composed of an air blow nozzle 17 and its piping 16. A plurality of the air blow nozzles 17 are installed in a direction perpendicular to the plane of the drawing, and blow air onto the entire upper surface of the work 3 on the pallets 2a and 2b. Further, as shown in the drawing, the air blowing direction of the air blow nozzle 17 is set in the direction of the cutting tip 13 on the work 3, and the air pipe 1
Reference numeral 6 is connected to an air source such as a compressor via a solenoid valve or the like.

The cleaning means 7 and 8 constructed in this way are
The cutting tip 13 is cleaned by the force of air blown from the air blow nozzle 17 and is dropped. The dropped cutting chips 13 are collected by the collecting means 9 such as a box. Further, the air blown out from the air blow nozzle 17 is supplied from the air source through the pipe 16, but the turning on / off of the air can be carried out by interlocking with the operation of carrying in / out the pallets 2a, 2b to / from the laser processing machine 1. Good. Since the air blow nozzle 17 is installed away from the upper surface of the work 3, there is no obstacle when the pallet having the processed products 14 as shown in FIG. 5 is carried out from the laser processing machine 1. .

Although the cleaning means 7 and 8 use the brush 10 and the air blow nozzle 17, the cleaning tip 7 may be sucked or adsorbed. Further, a box is shown as the collecting means 9 for the cutting tip 13 which is the cleaning object, but the shooter-shaped toshite cutting tip 13 is shown.
May be collected, or the cutting chips 13 may be collected by a conveyor structure.

[0040]

As described above, the laser beam machine according to the present invention is a laser beam machine for cutting a work loaded on a pallet with a laser, and a pallet held in a plurality of upper and lower stages can be used as a laser beam machine. In a laser processing machine provided with a pallet changer device for loading and unloading, since a cleaning means for cleaning the upper surface of the work on the pallet held in the lower stage was provided at the lower end of the pallet held in the upper stage, it dropped from the pallet in the upper stage, The cutting tip placed on the work of the lower pallet can be cleaned by cleaning means,
There is an effect that the occurrence of machining defects of the work can be prevented and the productivity can be improved.

Further, according to the present invention, since the cleaning means is operated when the pallet held in the lower stage is carried into the laser processing machine, there is an effect that the upper surface of the work can be cleaned efficiently.

Further, according to the present invention, since the recovery means for recovering the cleaning material cleaned by the cleaning means is provided under the pallet held in a plurality of upper and lower stages, the cutting chips are prevented from scattering and the cutting chips are prevented. Is easy to collect, and there is an effect that the maintenance property can be improved.

Further, according to the present invention, there is provided a laser processing machine for cutting a work loaded on a pallet by a laser, and provided with a pallet changer device for carrying in and out the pallets held in a plurality of upper and lower stages to the laser processing machine. In the laser processing machine, a cleaning means for cleaning the upper surface of the work on the pallet is provided between the holding part of the pallet held in the upper and lower stages and the processing position of the work of the laser processing machine.
The cutting chip placed on the work of the pallet can be cleaned by the cleaning means, and the work and the processed product can be easily handled, and the productivity can be improved.

Further, according to the present invention, since the cleaning means is operated when the pallet is carried into the laser processing machine, there is an effect that the upper surface of the work can be efficiently cleaned.

Further, in the present invention, since the recovery means for recovering the cleaned material is provided below the cleaning means, the cutting chips are prevented from scattering, the cutting chips are easily recovered, and the maintenance property is improved. There is an effect that can be improved.

Further, in the present invention, since the cleaning means is a brush, there is an effect that the cleaning means can be made inexpensive and simple.

Further, in the present invention, since the cleaning means is an air blow nozzle for blowing air, it is possible to perform cleaning without contact with the work, and the cut product may interfere with or collide with the cleaning means. It has the effect of preventing it.

[Brief description of drawings]

FIG. 1 is a side view showing the overall configuration of an embodiment of a laser processing machine according to the present invention.

FIG. 2 is a side view showing the structure of an embodiment of the laser processing machine of the present invention.

FIG. 3 is a side view showing the structure of another embodiment of the laser beam machine according to the present invention.

FIG. 4 is a side view showing the structure of another embodiment of the laser beam machine according to the present invention.

FIG. 5 is a side view showing the structure of another embodiment of the laser beam machine according to the present invention.

FIG. 6 is a side view showing a configuration of a conventional laser processing machine.

[Explanation of symbols]

1 laser processing machine, 2 pallets, 2a upper pallet, 2b lower pallet, 3 work, 4 processing head, 5 pallet changer device, 6 pallet loading / unloading device, 7 cleaning means, 8 cleaning means, 9 recovery means, 1
0 brush, 11 hinge plate, 12 stopper,
13 cutting tips, 14 cutting products, 15 supports, 1
6 air pipes, 17 air blow nozzles.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B23K 37/00 B23K 37/00 A B23Q 7/00 B23Q 7/00 E (72) Inventor Shuichi Sawai 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd.

Claims (8)

[Claims] 1. A laser beam machine for cutting a work loaded on a pallet with a laser beam, the laser beam machine having a pallet changer device for loading and unloading pallets held in a plurality of upper and lower stages to and from the laser beam machine. In the laser processing machine, a cleaning means for cleaning the upper surface of the work on the pallet held in the lower stage is provided at the lower end of the pallet held in the upper stage. 2. The laser processing machine according to claim 1, wherein the cleaning means is operated when the pallet held in the lower stage is carried into the laser processing machine. 3. The laser beam machine according to claim 1, further comprising: a collecting unit provided below the pallets held in a plurality of upper and lower stages to collect the cleaning material cleaned by the cleaning unit. 4. A laser beam machine for cutting a work loaded on a pallet with a laser beam, the laser beam machine having a pallet changer device for loading and unloading pallets held in a plurality of upper and lower stages into and out of the laser beam machine. In the laser, cleaning means for cleaning the upper surface of the work on the pallet is provided between the holding portion of the pallet held in the upper and lower stages and the processing position of the work of the laser processing machine. Processing machine. 5. The laser processing machine according to claim 4, wherein the cleaning means is operated when the pallet is carried into the laser processing machine. 6. The laser processing machine according to claim 4, further comprising a recovery unit provided below the cleaning unit for recovering the cleaned cleaning material. 7. The laser beam machine according to claim 1, wherein the cleaning means is a brush. 8. The laser beam machine according to claim 1, wherein the cleaning means is an air blow nozzle for blowing air.