JPH09168894A - Worktable of plasma/laser beam machine or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a worktable having a space saving and high efficient dust collecting chamber in the lower part of the worktable of a plasma/laser beam machine, etc. SOLUTION: A dust infiltration preventing lid 13 also serving as a baffle plate and a hopper 8 with each inhaling port 14a just under the lid are arranged in the lower part of the worktable 1 with a plasma torch or laser working head H in the upper part. A duct inner wall 15 is provided vertically and downward from the middle part of the slope of the hopper 8, a duct 16 is formed between the inner wall and the outer wall of the dust collecting chamber 1a, each inhaling port 14b is provided on the duct inner wall 15 and a dust collecting port is provided on the outer wall. Also, a convective air space 17 is formed in each slope and duct inner wall 15, and a refuse collecting caster carriage 10 is arranged under the bottom opening 9 of the hopper 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work table for a plasma or laser processing machine or the like, and more particularly to a dust collecting duct,
The present invention relates to a work table integrated with a hopper.

[0002]

2. Description of the Related Art When, for example, a sheet metal work is cut (fused) by using a plasma processing machine or a laser processing machine, a dross, a fume or the like is discharged from a processing head portion such as a plasma torch or a laser head on a work table. Conventionally, for example, a dust collecting chamber as shown in the schematic view of FIG. 3 is provided in the lower part of the work table, and is configured to be guided from the dust collecting port to a separate dust collector through a duct. It had been.

In FIG. 3, 20 is a work table, W
Indicates a sheet metal work, and H indicates a processing head such as a plasma torch or a laser head. A dust collecting chamber 20a is formed below the work table 20, an appropriate air guide plate 21 is provided directly below the work W, a chip conveyor 22 is provided below the work guide W, and a dust collector 23 (not shown) is provided on one side. It has a dust collecting port 24 that is guided through a duct. The streamlined arrows in the figure represent the direction of the air flow in the dust collection chamber 20a.

[0004]

However, in the conventional example as described above, the vicinity 2 on the side opposite to the dust collecting port 24 is provided.
In No. 5, because the suction is bad, the dust collection efficiency is extremely low,
Alternatively, since it is almost empty and no hopper or the like is provided, high-cost equipment such as a chip conveyor 22 for collecting debris by the processing head H is required.

The present invention has been made in view of the above situation, and improves the dust collection efficiency in the dust collection chamber below the work table, and saves space and dust by arranging ducts inside the hopper. It is an object of the present invention to provide a work table structure of a plasma / laser processing machine of this kind, which can achieve high efficiency and the like.

[0006]

Therefore, in the present invention, a processing head is provided on the upper surface of a work table such as a plasma or laser processing machine, and a dust collecting chamber is provided on the lower surface of the work table. In addition, a hopper member having a bottom opening is provided, and a duct portion is formed between an inner wall of the duct extending below an intermediate portion of each inclined surface of the hopper member and an outer wall of the dust collecting chamber. A plurality of suction ports are formed on the upper side of the duct and the inner wall of the duct, and the duct part is provided with a dust collecting port, or, further, below the bottom opening of the hopper member. By disposing a trolley, and by configuring the outer wall of the dust collection chamber to be provided with a dust intrusion prevention lid member that also serves as a baffle plate, directly above the hopper member top.
It is intended to achieve the above object.

[0007]

With the above-described structure of the present invention, diffusion and suction of fumes and debris generated during machining of a workpiece are extremely efficient on average, and space saving of the dust collecting chamber and improvement of dust collecting efficiency are achieved. You can

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
A detailed description is given based on an example:

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall perspective view around a work table of an embodiment of a plasma cutting machine of this kind according to the present invention, FIG.
FIG. 2 shows a plan view (a) and a vertical cross-sectional view (b) of the construction of the dust collecting chamber (duct) section below the work table. In this plasma cutting machine, a workpiece is fixed, and a plasma torch as a processing head H is arranged so as to be movable in the X and Y axis directions.

(Structure) In FIG. 1, reference numeral 1 denotes a work table, on the upper surface of each of which is mounted a parallel crosspiece 3a for mounting a work W, which is held by a work clamp 2 provided at an appropriate position on the upper surface side. A plurality of free bearings 3 are arranged.

On the left and right sides of the work table 1 in the Y direction, a pair of guides L / guides R 4L / 4R are arranged in parallel in the X direction. Inside the guide L 4L, a motor-driven ball screw (not shown) is extended in the X direction, and the left leg portion of the portal frame 5 meshes with the ball screw so that the free bearing table 1 It is possible to reciprocate in the X direction while straddling and being guided by both guides 4L / 4R.

A Y-direction guide 6 is provided in the gate-shaped frame 5, a motor-driven ball screw (not shown) is provided therein to extend in the Y-direction, and a carriage 7 carrying a plasma torch H is installed.
Can reciprocate on the guide 6 in the Y direction.

The lower dust collecting chamber (duct) of FIG. 2 according to the present invention.
1a is formed on the lower surface of the work table 1 and is provided with a hopper member 8 having a bottom surface opening 9. Immediately below the hopper member 8 is a slag collecting caster carriage 10 (11 indicates the caster) on the floor surface. Arranged and push handle 1
2, it can be manually pulled out / moved in the Y direction.

2 (a) and 2 (b), a dust intrusion prevention lid 1 also serving as a wind guide plate is provided above the dust collection chamber 1a.
3 is provided, a hopper 8 having an opening 9 at the bottom is disposed directly below the suction port 3, and suction ports 14a are provided immediately below the lid 13 above the hopper 8.

Further, a duct inner wall 15 is provided at an intermediate portion of each inclined surface of the hopper portion 8 to form a duct portion 16 between the outer wall of the dust collecting chamber 1a and the peripheral surface of the bottom, and each duct inner wall 15 portion. Each suction port 14b is bored in each of the above. Further, with the above-described structure, the convection space 17 is formed in each lower portion of each inclined surface of the hopper 8 and each duct inner wall portion 15.

A dust collecting port 18 is provided on one surface of the outer wall of the dust collecting chamber 1 so as to circulate in the duct portion 16, and is connected to a separately placed dust collector 19 through a duct (not shown). There is.

(Operation) Due to the dust collecting chamber 1a (duct) structure below the work table 1 of the present embodiment, fumes and the like generated during processing of the plasma torch H (or laser head etc.) are shown in FIG. ), As indicated by the arrow streamline, the table 1 collides with the floor of the caster truck 10 on the lower surface of the table 1,
As they ascend while diffusing in the horizontal direction, they temporarily accumulate in the convection space 17 and enter the duct 1 from each suction port 14b.
It is inhaled into 6.

Further, since the upper part of the hopper 8 also has the respective suction ports 14a with the combined air guide plate 13, the work W is cut off at the upper part of the hopper 8 and does not flow downward, and the fumes directed upward flow in the direction of dotted arrows. As shown by the line, it is sucked into the duct 16 and a very high dust collection efficiency is obtained with a space-saving configuration.

(Other Embodiments) In the above embodiment, the example of the plasma cutting machine of the two-axis moving type in which the work W is fixed to the work table 1 has been described, but the present invention is not limited to this. Of course.

[0020]

As described above, according to the present invention, in order to process fumes and slag generated at the time of cutting work of a sheet metal work such as a plasma processing machine or a laser processing machine,
In the lower part of the processing table, a dust intrusion prevention lid that also serves as a baffle plate is provided above the hopper having openings on the upper side, and an inner wall of the duct having openings is provided in the middle of each inclined surface of the hopper to provide a duct part around the periphery. And the caster truck for collecting dust was placed directly under the opening of the bottom of the hopper, it was possible to obtain a high dust collection efficiency in an extremely space-saving manner.

[Brief description of the drawings]

FIG. 1 is an overall perspective view around a work table according to an embodiment.

FIG. 2 is a plan view and a vertical sectional view of the configuration of a dust collecting chamber of the embodiment.

[Fig. 3] Example of conventional dust collection chamber

[Explanation of symbols]

 1, 20 Work table 1a, 20a Lower dust collection chamber 2 Work clamp 3 Free bearing 4L X direction guide L 4R X direction guide R 5 Gate frame 6 Y direction guide 7 Carriage 8 Hopper 9 Opening 10 Slag collecting caster truck 11 Casters 12 Handwheel 13 Dust intrusion prevention lid 14a, 14b Suction port 15 Duct inner wall 16 Duct part 17 Convection space 18,24 Dust collection port 19,23 Dust collector 21 Baffle plate 22 Chip conveyor H Processing head (plasma torch, leather) head)

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B23Q 11/00 B23Q 11/00 Q

Claims (3)

[Claims] 1. A plasma or laser processing machine has a processing head on the upper surface of a work table, a dust chamber is provided on the lower surface of the work table, and a hopper member having a bottom opening is provided. A duct portion is formed between an inner wall of the duct extending downward from an intermediate portion of each inclined surface of the hopper member and an outer wall of the dust collecting chamber, and a plurality of suction ports are provided on the upper side of the hopper member and the inner wall of the duct. A work table for a plasma or laser processing machine or the like, characterized in that a dust collecting port is provided in the duct portion. 2. The work table of the plasma or laser processing machine according to claim 1, further comprising a slag collecting cart disposed below the bottom opening of the hopper member. 3. The plasma according to claim 1, further comprising an air guide plate / dust intrusion prevention lid member provided on an outer wall of the dust collection chamber, directly above the top of the hopper member. Or a work table such as a laser beam machine.