JPH02142696A - Dust collector for laser beam machine - Google Patents

Abstract

PURPOSE:To efficiently execute the dust collection by providing plural air nozzles for forming a solid air curtain provided on the periphery of a laser machining table, and a dust collector which penetrates the air curtain and opens a dust suction port in its inside, and brings dust to suction treatment. CONSTITUTION:Plural air nozzles 1 are provided at a suitable interval on the inside periphery of a table 6, and an air curtain 2 for surrounding solidly a table opening part and a dust collector dust suction port 5 is formed on the upper part of the table. The air nozzle of a long side on the side opposite to the dust suction port executes an operation for not only blowing out air to the oblique upper part but also pushing dust 3 into the dust suction port 5. A dust collector 4 treats dust sucked from the dust suction port 5 by a filter, etc. A work 6-1 is placed on a sword tip 6-2 provided projectingly on the laser working table 6. At the time of laser machining, dust generated from the work 6-1 is collected by a synergetic effect of a push effect of air and a pull effect of the dust collector. In such a way, dust does not escape to the outside but can be collected efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dust collector for processing dust generated during processing with a laser processing machine.

[Conventional technology]

Conventionally, in a laser processing machine, as shown in the perspective view of FIG. Dust 3 generated from a workpiece set on a processing table 6 attached and partitioned on a movable horizontal processing table 9 is removed through a plurality of inward openings 13 bored at equal intervals in a rectangular duct surrounding the processing table 6. After passing through a dust collector duct 12, the dust is sucked into a large 111 machine 11.

[Problem to be solved by the invention]

However, such devices have the following problems.

(1) The amount of air sucked into the dust collector is very large because it is determined by the table area as the opening area, so the volume of the dust collector becomes large, and the floor area and cost l-,! 'It is not necessarily practical in terms of J sound etc.

(2) When the flat workpiece covers the top of the table,
Dust blown under the workpiece is trapped inside the table and can be sucked in, but dust floating on the top of the workpiece escapes upward and cannot be completely collected.

(3) Since the air volume is large, the diameter of the piping assembled to the table must be large, which increases the amount of table M, resulting in disadvantageous space and poor appearance.

(4) As a means to solve this problem, if the entire laser processing machine is covered with acrylic, etc., the dust collector will be small, but it will cause problems such as poor material handling and environmental problems for the workers inside. It has low practicality due to its poor quality and cost.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a sanitary laser processing machine dust collector that is small, lightweight, and capable of collecting all generated dust at a low cost.

[Means to solve the problem]

To this end, the present invention provides a plurality of air nozzles that are arranged along the four circumferences of a laser processing table and form a three-dimensional air curtain that uses ejected air to shield the upper end opening of the table from outside air, and the three-dimensional air curtain. The present invention is characterized by comprising a dust collector having a dust suction port opening inside the table and sucking dust generated from the workpieces on the table.

[Effect]

According to this type of device, even if the dust is light and flies upward, it is surrounded three-dimensionally by an air curtain and is contained within it, and by placing the dust collection port of the dust collector duct inside this, , the trapped dust can be sucked in and disposed of without escaping.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the entire structure, and FIG. 2 is a cross-sectional view of FIG. 1.

In the above figure, the same reference numbers as in FIG.
In order to form an air curtain 2 above the table that three-dimensionally surrounds the table opening and the dust collector suction port 5, the air nozzles on the long side opposite to the dust suction port are arranged at appropriate intervals on the inner circumference of the table. Air is ejected diagonally upward as shown by the arrow,
It also acts to push the dust 3 into the dust suction port 5. A dust collector 4 is disposed near the rear end of the processing table 6, and its dust suction port 5 opens into the space formed by the air curtain 2, and the sucked dust is processed with a filter or the like. Reference numeral 6 denotes a laser processing table, and a workpiece 6-1 is placed on a plurality of blade points 6-2 protruding from the table vertically and horizontally. Reference numeral 10 denotes an air pipe which introduces air supplied from an air source into the air nozzle 1 and blows it out.

In such a device, during laser processing, the workpiece 6
The dust 3 generated from -1 floats up from the surface of the workpiece, or is slammed against the bottom of the table from the workpiece cutting opening by the jet force of the assist gas emitted from the processing head 8, and eventually reaches the table opening and attempts to escape. do.

At that time, in this device, the top surface of the table is shielded from the outside R1 by the air curtain, so the dust does not escape to the outside, but is trapped inside, and due to the bushing effect of the air and the suction of the dust collector 4. The dust is collected in the dust collector 4 due to the synergistic effect with the pull effect caused by the force.

Since most of the dust is as light as cigarette smoke, the amount of air flow from the air curtain is relatively small.
and can be pushed into a dust collector.

〔Effect of the invention〕

According to such a device, the following effects can be achieved.

(1) The air curtain surrounds the space directly above the table opening, preventing dust from escaping to the outside.

(2) Trapped dust can be efficiently collected by the bushing effect of the air and the pull effect of the dust collector.

(3) Therefore, the device is simple, the capacity of the dust collector is small, and it is economical, requiring only 4 degrees of floor space.

(4) Dust is trapped inside the table and sucked out by a dust collector, ensuring worker hygiene.

In short, according to the present invention, a plurality of air nozzles are arranged along the four circumferences of a laser processing table and form a three-dimensional air curtain that uses ejected air to shield the upper end opening of the table from outside air; Equipped with a dust collector with a dust suction port that penetrates through the curtain and suctions the dust generated from the workpieces on the table, it is small, lightweight, and low-cost and hygienic because it collects all the generated dust. From getting the laser processing machine dust collector,
The present invention is extremely useful industrially.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG. 1. FIG. 3 is an overall perspective view showing a known laser processing machine dust collector. ■...Air nozzle, 2...Air curtain, 3...
Dust, 4... Dust collector, 5... Dust suction port, 6... Processing table, 6-1... Workpiece, 6-2... Sword tip, 7
... Column, 8... Processing head, 9... Movable horizontal processing table, 10... Air piping. Agent Masa Tsukamoto, Patent Attorney Figure 1 Figure 3 Figure 2

Claims (1)

[Scope of Claims] A plurality of air nozzles that are arranged along the four circumferences of a laser processing table and form a three-dimensional air curtain that uses ejected air to shield the upper end opening of the table from outside air; and the three-dimensional air curtain. A dust collection device for a laser processing machine, comprising: a dust collector having a dust suction port opening in the interior thereof to suck and process dust generated from the workpieces on the table.