JPH11156580A - Reflection light preventing scrap box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate return lights and prevent a center part of a laser light with a high density from contacting with a combustible material resulting in the solution of troubles such as fuming and ignition by making a bottom part of a scrap box in a shape to prevent the laser light reflection and the build-up of the scrap right below an optical axis. SOLUTION: A processing is carried out by moving and adjusting a laser head 1 and a clamp C along a X axis and a Y axis respectively by a processing command and the like, and the scrap being cut off from a product is dropped and stored in a scrap box 3 arranged below a work table 2. A protruded peak shaped inner laid plate 4 is provided at the bottom part of the box 3, and its top part is parallel with a slit S. Therefore, since the dropped scrap is accommodated in a slanting condition, the laser lights which pass through the slit S and come in, are not reflected towards right above. Thus, the return light does not go out to the upper face of the table 2 from the slit S positioned at the upper part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scrap box for preventing reflected light in a laser processing machine of a uniaxial light moving, uniaxial material moving type or the like.

[0002]

2. Description of the Related Art In a uniaxial light moving, uniaxial material moving type laser processing machine or the like, a box-shaped scrap box for receiving a scrap at the time of laser processing is arranged below a work table and generated during laser processing. The scrap box is designed to receive the falling scraps and carry them out of the machine together with the scrap box. However, the scrap box is usually a rectangular box with casters.

[0003]

However, in the above-described conventional example, when a work such as laser cutting is performed, the scrap separated from the work passes through a slit provided on the work table and is moved downward. When the shape of the bottom of the scrap box is flat, the laser light that has passed through the slit and entered the scrap box is accommodated by being dropped into the disposed scrap box.
The bottom of the scrap box, or the surface of the scrap accumulated at the bottom, the return light of the laser light bounces upward through the slit and smokes or ignites, or causes thermal deformation of the workpiece, or the scrap box There is a problem in that the combustible material accumulated in the tank may be ignited by laser light.

The present invention has been made by paying attention to the above-mentioned point, and the return light reflected on the bottom of the scrap box at the time of laser processing passes through the slit and goes upward where the processing head or the like is located. It is an object of the present invention to provide a reflected light preventing scrap box which is prevented from coming out of the scrap box and is prevented from accumulating in a portion where a center portion of the scrap box having a high density of laser light directly hits.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) In a laser processing machine of a uniaxial light moving and a uniaxial material moving type, the bottom of a scrap box located directly below the laser processing head along a moving axis through a slit of a work table is prevented from reflecting laser light. , And a scrap preventing box formed just below the optical axis of the scrap.

(2) The laser beam anti-reflection shape is such that a mountain-shaped projection is provided at the bottom of the inner surface of the scrap box, directly below the laser beam moving axis, in parallel with the laser beam moving axis, and the scrap light is reflected. The reflected light preventing scrap box according to the above (1), wherein pooling just below the shaft is prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1 (a) is a partially cutaway side view showing a main part structure according to the present invention, FIG. 1 (b) is a partial sectional perspective view showing the main part structure, and FIG. 2 (a) is a laser beam machine. (B) is a side view showing a conventional example, and FIG. 3 (a) is a perspective view showing an example in which the angle of a chevron shape is large, and FIG.
Is a perspective view showing an example in which the angle of the chevron is small, and FIG. 4 is a perspective view showing an example in which the bottom shape of the scrap box is directly chevron.

Referring to the drawings, 1 is a laser head, 2 is a work table, 3 is a scrap box,
Reference numeral 4 denotes an angled insole, and a laser processing head 1
Is movable in parallel along a slit S provided in a direction (X axis) orthogonal to the moving direction of the material, and the material is sandwiched by clamps C and is orthogonal to the moving direction of the laser processing head 1. It is movable in the direction (Y axis).

The scrap box 3 is a work table 2
Below and just below the slit S provided on the work table 2 in parallel to the slit S, the laser beam L irradiated during processing is cut through the slit S during processing. The scrap box 3 is adapted to be received together with the scrap WS that has been cut off and the bottom of the scrap box 3 is provided with a mountain-shaped insole plate. The laser light L is disposed so as to be located directly below the center of the laser light L in parallel with S, so that the return light of the laser light L does not bounce upward and return through the slit S.

That is, applying the principle that the incident angle and the reflection angle are equal to the normal, the return light of the laser light L is reflected right above, passes through the slit S, and the laser processing head 1 and the like are disposed. In order not to fly out to the upper surface of the work table 2, the light is reflected in a lateral direction other than the direction of the slit S so as to be reflected.

The operation will be described based on the above configuration.

The work material clamped by the clamp C moves to a predetermined position along the traveling direction (Y-axis direction), and the laser processing head 1 movable in the X-axis direction orthogonal to the traveling direction is moved to a predetermined position. When the laser head 1 and the clamp C are moved along the X-axis and the Y-axis, respectively, according to a processing program command and the like, the processing is performed. The scrap WS thus collected is dropped and stored in a scrap box 3 arranged below the table 2.

At this time, as shown in FIGS. 1 (a) and 1 (b), an insole plate protruding in a mountain shape is provided at the bottom of the scrap box 3 and its top is parallel to the slit S. Since the dropped scrap WS is stored in an inclined state, the laser light that enters through the slit S does not reflect right above, and therefore the return light jumps out of the slit S located above and onto the upper surface of the table 2. It can eliminate troubles such as smoke and ignition.

Note that even if the laser beam directly enters the scrap box 3 due to the mountain-shaped projecting insole plate located immediately below the slit S, the return light does not jump out to the upper surface of the work table 2 as described above. .

Further, instead of providing the chevron-shaped projections as insole plates, the bottom of the scrap box 3 may be directly processed to be chevron-shaped projections (see FIG. 4).

Further, the size of the chevron shape and the magnitude of the angle of the chevron may be set in accordance with the size of the scrap box 3 and other conditions (see FIGS. 3A and 3B).

[0019]

According to the present invention, since the bottom of the scrap box is formed in a mountain shape, return light is eliminated, and the center portion having a high laser light density does not hit the combustible material accumulated in the scrap box. This has the effect of eliminating troubles such as smoke and ignition.

[Brief description of the drawings]

FIG. 1A is a partially cutaway side view showing a main part configuration according to the present invention, and FIG.

2A is a perspective view showing a configuration example of a laser beam machine, and FIG. 2B is a side view showing a conventional example.

3A is a perspective view showing an example of a case where the angle of the chevron shape is large, and FIG. 3B is a perspective view showing an example of a case where the angle of the chevron shape is small.

FIG. 4 is a perspective view showing an example where the bottom shape of the scrap box is directly angled;

[Explanation of symbols]

 Reference Signs List 1 laser processing head 2 work table 3 scrap box 4 chevron insole C clamp L laser beam LM laser processing machine S slit WS scrap

Claims (2)

[Claims] 1. A laser processing machine of a one-axis light moving, one-axis material moving type, wherein a bottom of a scrap box located immediately below a laser processing head through a slit of a work table along a moving axis thereof is prevented from being reflected by a laser beam. And a reflection preventing anti-reflection scrap box, wherein the anti-reflection light preventing box has a shape to prevent accumulation of the scrap immediately below the optical axis. 2. An anti-laser light reflection shape, wherein a mountain-shaped protrusion is provided at a portion located directly below a laser light moving axis at a bottom portion of an inner surface of a scrap box in parallel with the laser light moving axis, and a scrap optical axis is provided. The reflected light preventing scrap box according to claim 1, wherein pooling just below is prevented.