JP2000288782A - Method and device for dust collecting of work working device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean an environment around a device by dust-collecting without leaking a hurtful gas, a dust, etc., generated in working a work to the outside of a device. SOLUTION: In working a work by the energy emitted from a working head, an air wall is made by the air injected from an air injection pole 21 arranged at the outer periphery of a working machine so as to encircle the working machine. By rotating a fan 27 of a dust collecting part 29 arranged at the upper part of the working machine, the dust generated in working the work is blown up upward to collect duct.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting method and a dust collecting apparatus for a work processing apparatus, such as a plasma processing apparatus, a laser processing apparatus, and a gas cutting apparatus, for processing a work using energy emitted from a processing head. More specifically, it is an object of the present invention to provide a dust collecting method and a dust collecting device for a work processing apparatus capable of removing harmful gas and dust generated during processing.

[0002]

2. Description of the Related Art Conventionally, in a workpiece processing apparatus such as a plasma processing apparatus, a laser processing apparatus, and a gas cutting apparatus, when a workpiece is processed by energy emitted from a processing head, harmful gas and dust are generated. Environmental measures have been taken to collect dust.

[0003] For example, as shown in FIG. 7, in a plasma processing apparatus, the outer periphery of a work table is partitioned by a partition 101.
A duct 103 is provided on one side of the partition wall 101 and connected to a dust collector.
There is proposed a dust collector in which dust generated during work processing is forcibly sucked by the blower 105 by providing the air blower 105.

In this dust collector, a plasma torch 107
The dust generated when processing the work W positioned on the cutting table 109 of the work table by the plasma arc generated by the plasma arc can be forcibly drawn into the work table surrounded by the partition wall 101 by the blower 105. Therefore, harmful gas and dust can be collected.

[0005] In addition, as shown in FIG. 8, the processing machine is covered with a dome 111, and a dust collector 113 is connected to the dome 111, and harmful gas and dust generated during processing are collected by the dust collector 113.

[0006] In the dust collector having such a configuration, since the entire processing machine is covered with the dome 111, harmful gas and dust generated during processing can be collected without leaking to the outside of the processing machine. Therefore, there is no adverse effect on the environment around the processing device.

[0007]

However, in the dust collecting apparatus shown in FIG. 7, even if harmful gas and dust in the work table surrounded by the partition wall 101 can be efficiently collected, as shown in FIG. In addition, it is difficult to collect dust and the like due to blow-up from the work W. Further, dust leaking from a gap between the work table and the work W and a skeleton portion of the work W is hard to collect.

Further, in the dust collecting apparatus shown in FIG. 8, although the outflow of dust and the like can be prevented,
Opening and closing operations of the dome 111 are required, which is troublesome.

In view of the above, the present invention has been proposed to solve the above-described problems, and it is possible to remove harmful gas and dust generated during processing and to easily carry in and out a work. It is an object of the present invention to provide a dust collecting method and a dust collecting device for a work processing apparatus that can perform the above-described operations.

[0010]

According to the present invention, there is provided an air blowing means for forming a wall made of air so as to surround a processing machine, and a dust collecting section provided with a fan at an upper portion of the processing machine.

By forming a wall made of air so as to surround the processing machine, harmful gas or dust generated during processing does not leak out of the processing machine. In addition, the gas and dust generated inside the wall surrounded by the air wall are raised by the fan of the dust collection section provided at the top of the processing machine, and collected into the dust collection section, and the dust flows out to the outside. Can be prevented.

In addition, since the processing machine is not covered with a partition wall or a dome, but is covered with a wall made of air, in other words, an air curtain, the processing machine is not hindered when loading and unloading the work, so that the work can be easily performed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.
In the present embodiment, the present invention is applied to a dust collector of a plasma processing apparatus that generates a plasma arc from the tip of a torch and cuts a workpiece or the like.

As shown in FIGS. 1 and 2, the plasma processing apparatus includes a work clamper 3 for clamping a work (not shown) on a work table 1. The work clamper 3 clamps the work and positions and fixes the work on the work table 1.

As shown in FIGS. 1 and 2, a plasma torch 7 serving as a processing head is movably provided above the work table 1. The plasma torch 7 is guided by a guide rail 17 provided on the floor surface 9 on a frame 11 erected on the floor surface 9 and is movable in the X direction by an X-axis driving servomotor 13. The beam member 15 is provided. And
The plasma torch 7 includes a Y-axis driving servomotor 1
9 makes it movable in the Y direction along the beam member 15.

In the plasma processing apparatus having the above configuration,
After the work clamped by the work clamper 3 is positioned at a predetermined position on the work table 1, the plasma torch 7 is sent to a predetermined position on the work by the X-axis driving servomotor 13 and the Y-axis driving servomotor 19, The work is cut by the plasma arc emitted from the plasma torch 7.

In this embodiment, as shown in FIG. 1 and FIG. 2, air ejection means is an air ejection means for forming a wall (air curtain) by air so as to surround the plasma processing apparatus constructed as described above. Pole 2
Numerals 1 are respectively set up at four corners on the outer periphery of the plasma processing apparatus.

As shown in FIG. 3, the air jetting pole 21 is formed as a hollow cylindrical body into which air is introduced, and jets air at a predetermined interval in the height direction. Nozzles 23 are provided. An air supply hose 25 connected to an air supply source (not shown) is connected to the base end of the air ejection pole 21. The air supply hose 25 is supplied from the air supply source through the air supply hose 25. Air A is supplied into the pole.

The height of the air ejection pole 21 is preferably at least higher than the height of the plasma processing apparatus in order to prevent harmful gas and dust from leaking outside the plasma processing apparatus. In addition, the number and arrangement position of the nozzles 23 are not particularly limited as long as an air curtain that can cover the outer periphery of the plasma processing apparatus with the air A jetted from each nozzle 23 is formed.

As shown in FIG. 5, the air A jetted from each of the air jetting poles 21 forms a wall made of air, that is, an air curtain so as to surround the plasma processing apparatus. That is, in FIG. 5, the air A from the air ejection pole 21 (referred to as a first pole for convenience) provided at the upper left side of the plasma processing apparatus is used to convert the air A from the air ejection pole 21 provided at the lower left side (similarly to the first pole). 2), and the air A from the second pole is ejected toward an air ejection pole 21 (similarly, a third pole) provided at the lower right side of the plasma processing apparatus. The air A from the third pole is jetted toward an air jetting pole 21 (similarly, a fourth pole) provided on the upper right side of the plasma processing apparatus, and the air A from the fourth pole is converted into the first air. Blow air toward the pole.

As described above, by forming the wall by air so as to surround the outer periphery of the plasma processing apparatus, the outer periphery of the plasma processing apparatus is covered by the partition. Here, the work W can be easily taken in and out because the wall is made of air.

A dust collector 29 having a fan 27 is provided above the plasma processing apparatus, as shown in FIGS. The dust collecting unit 29 has a roof shape that covers the upper part of the plasma processing apparatus.
It is provided on each of the air ejection poles 21.
The fan 27 is provided on the ceiling of the dust collecting section 29 and plays a role of sowing harmful gas and dust generated at the time of processing a work and drawing it into the dust collecting section 29. The collected dust is sent to and trapped in a dust collector (not shown) having a vacuum mechanism.

Next, in order to collect harmful gas and dust generated during work processing using the dust collecting apparatus having the above-described structure, the following operation is performed.

First, the dust collector is operated by the plasma processing apparatus and the fan 27 is rotated. In addition, air A is ejected from the nozzle 23 of each air ejection pole 21 to form a wall made of air so as to surround the plasma processing apparatus.

If the workpiece is cut by the plasma processing apparatus, it is possible to prevent harmful gas or dust generated during the processing from flowing out of the plasma processing apparatus by the air curtain. Further, dust and the like that blow upward during work processing are soared upward by the fan 27, collected by the dust collection unit 29, and finally trapped in the dust collector.

As described above, the air curtain is formed so as to surround the outer periphery of the plasma processing apparatus to prevent the dust and the like from flowing out of the plasma processing apparatus. Since the dust is collected, it is possible to surely collect the dust or the like that blows upward during work processing. Therefore, the environment around the plasma processing apparatus can be kept clean.

When the processing of the work is completed, the supply of the air to be blown from the air blowing pole 21 is stopped, the processed work is taken out, and the work to be processed next is supplied to the work table.

As described above, the specific embodiments to which the present invention is applied have been described. However, the present invention is not limited to the above-described embodiments, and various changes can be made.

For example, since the air ejecting pole 21 is excellent in installation easiness, its installation position is appropriately changed, and the air blowing direction from the air ejecting pole 21 and the suction fan 27 are used in FIGS. As shown in FIG. 5, a swirling flow soaring upward in the air curtain is generated. If such a swirling flow is generated, it becomes easier to collect harmful gas and dust.

Also, taking advantage of the ease of installation of the air jetting pole 21, when two plasma processing apparatuses are arranged side by side as shown in FIG. The pole 21 may be shared to simplify the device configuration.

In the above embodiment, the plasma processing apparatus has been described as an example. However, the same effects can be obtained by applying the present invention to a work processing apparatus that generates dust and fumes, such as a laser processing apparatus and a gas cutting apparatus.

[0032]

The present invention is embodied in the form described above and has the following effects.

According to the dust collecting method of the work processing apparatus of the present invention, a wall made of air is formed so as to surround the processing machine by air jetted from air jetting means provided on the outer periphery of the processing machine. By rotating the fan of the dust collection section provided at the top of the work, dust generated during processing of the work is soared upward to collect the dust, so that harmful gas and dust blown up during work processing. Dust can be collected without leaking to the outside of the apparatus, and the environment around the apparatus can be cleaned. Further, since the wall is made of air, the work is not obstructed even when the work is carried in and out, and the work can be easily taken in and out, thereby improving workability.

Further, according to the dust collecting method of the work processing apparatus of the present invention, since the swirling flow is generated inside the wall surrounded by the air wall, it is possible to further collect harmful gas and dust. It becomes easier and the dust collection efficiency is improved.

On the other hand, according to the dust collecting apparatus of the work processing apparatus of the present invention, an air blowing means for forming a wall made of air is provided so as to surround the processing machine, and a dust collecting section having a fan above the processing machine. , Dust can be collected without leaking harmful gas or dust generated during work processing to the outside of the apparatus, and the apparatus configuration can be simplified.

Further, according to the dust collecting apparatus of the work processing apparatus of the present invention, a plurality of air ejecting means are provided, and the direction of the air ejected from each of the air ejecting means is turned in one direction on the wall by the air. The direction in which the flow is generated makes it easier to collect harmful gas and dust, and the dust collection efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a front view schematically illustrating a dust collector of a work processing apparatus according to an embodiment.

FIG. 2 is a plan view schematically showing an arrangement position of an air ejection pole.

FIG. 3 is a main part perspective view showing a state in which air is jetted from an air jetting pole.

FIG. 4 is a front view schematically showing a state in which a swirling flow is generated in the air curtain.

FIG. 5 is a plan view schematically showing a state in which a swirling flow is generated in the air curtain.

FIG. 6 is a front view schematically illustrating a dust collector in which a common air ejection pole is installed in two work processing apparatuses.

FIG. 7 is a sectional view schematically showing a conventional dust collector.

FIG. 8 is a perspective view schematically showing a conventional dust collecting device in which a work processing device is covered with a dome.

9 is a cross-sectional view schematically showing a state in which dust and the like are blown up at the time of processing a workpiece in the dust collecting device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work table 7 Plasma torch 21 Air ejection pole 23 Nozzle 27 Fan 29 Dust collecting part

Claims (4)

[Claims] In processing a workpiece with energy emitted from a processing head, air blown from air blowing means provided on the outer periphery of the processing machine forms a wall with air so as to surround the processing machine. A dust collecting method for a work processing apparatus, comprising: rotating a fan of a dust collecting section provided at an upper part of the machine to fly up dust generated during processing of the work so as to collect the dust. 2. The dust collecting method for a work processing apparatus according to claim 1, wherein a swirling flow is generated inside the wall surrounded by the air. 3. An air ejection means for forming a wall by air so as to surround a processing machine for processing a workpiece by energy emitted from a processing head, and a dust collecting section having a fan is provided on an upper portion of the processing machine. A dust collector for a work processing device. 4. A method according to claim 1, wherein a plurality of said air jetting means are provided, and a direction of air jetting jetted from each air jetting means is a direction for generating a flow in such a manner that said wall is swirled in one direction by said air. A dust collector for a work processing apparatus according to claim 3.