JP2001096387A - Laser machining torch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser machining torch in which a proper torch can be selected from a pencil type and pistol type according to the shape of workpiece, switching of one to another is easy, and the operability of a switch for lasing is improved. SOLUTION: A pistol type grip 2 is provided so as to be freely foldable on a peaked cylindrical laser machining torch body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention covers an optical fiber for guiding a laser beam generated by a laser oscillator, and irradiates a workpiece with a laser beam radiated from the tip of the optical fiber to perform welding, fusing, etc. The present invention relates to a handy type laser processing torch for performing the following.

[0002]

2. Description of the Related Art A conventional handy type torch of this type is generally of a pencil type as shown in FIG. The torch (01) has a tip-shaped cylindrical torch body attached to the tip of a flexible torch lead (02) containing an optical fiber cable for guiding laser light, a hose for assist gas supply, etc. (not shown). (03) is attached. Hold the torch body (03) in the manner of holding a pencil, apply the nozzle (04) at the tip to the processing surface (06) of the work (05), and apply laser light from the tip of the nozzle (04). And an assist gas are released, and processing such as welding and fusing is performed on the processing surface (06).

[0003]

The conventional pencil-type torch as described above is convenient when the work is to be performed while the work is horizontal, but when the work surface is vertical or inclined. The wrist (0) holding the torch body (03)
In 7), there is a problem that the load of the torch lead (02) or the like is applied, the operability is deteriorated, and the wrist (07) is easily fatigued. Therefore, as disclosed in, for example, Japanese Patent Application Laid-Open No. 9-155582, there is a torch of a pistol type as a whole.

[0004] However, a pistol-type torch is convenient when the work surface is vertical, but when the work surface is horizontal, it is rather inconvenient to use and the support of the torch becomes unstable. However, there is a problem in that the slab is easy to shake.

[0005] In view of the above-mentioned problems of the prior art, the present invention selects and uses a torch from two types, a pencil type and a pistol type, according to the situation of a workpiece. An object of the present invention is to provide a torch for laser processing in which the switching is easy and the operability of a switch for laser emission mounted on the torch main body is improved.

[0006]

According to the present invention, the above-mentioned problem is solved as follows. (1) A pistol-type grip is foldably provided on a torch body having a pointed cylindrical shape.

(2) In the above item (1), a switch for enabling laser emission is provided on the torch main body, and when the grip is protruded to the side, the switch is operated by a part of the grip. To do.

FIG. 1 and FIG. 2 show an embodiment of the present invention.

A front end surface of a gutter-shaped pistol-type grip (2) which can be fitted from below the pointed cylindrical torch body (1) is held by a torch body (3) with a pivot (3) facing left and right.
(1), the grip (2) is fitted to the lower half of the torch body (1) as shown in FIG. 1 and the torch is folded as shown in FIG. With respect to the main body (1), it can be turned to a use position at a right angle or an inclination angle close thereto.

An elastic tongue (4) extending in the longitudinal direction is connected to the grip (2) in front of the pivot (3). The elastic tongue (4) is connected to the torch body (1). By overcoming the hemispherical protrusion (5) provided on the side, grip
(2) can be moved between the folded position and the use position, and the grip (2) is stably held in both positions.

The torch body (1) has a nozzle (6) at the tip and an optical fiber cable for guiding laser light, an assist gas supply hose, and a push button type switch ( 7) is connected to a laser generator (not shown) via a flexible torch lead (8) in which a signal line (all not shown) and the like are accommodated.

As shown in FIG. 2, when the grip (2) is turned downward to the use position, the front edge of the grip (2) is operated by pressing the switch (7).

The switch (7) has a role of a firing switch for enabling laser emission or a main switch for operating the laser generator.

Open the grip (2) by rotating it,
When the tip (6) is brought into contact with or close to a work (not shown) in a state where (7) is operated, laser light and assist gas are emitted from the nozzle (6), and The work can be welded or blown.

Since the grip (2) is of a foldable type, there is no risk of the grip (2) being lost when not in use, and in the folded state, the torch body (1) can be used as a pencil type.

The fact that the nozzle (6) has come into contact with the work or that the nozzle (6) has come close to the work is determined by the torch body
A touch sensor or a proximity sensor (both not shown) provided at the distal end of (1) detects it. A specific configuration for emitting a laser beam or the like only when these sensors are operated in a state where the switch (7) is operated is described in, for example, Japanese Patent Publication No. No. 24943, Utility Model Registration No. 3015467
It is disclosed in the gazette published in the issue.

[0017]

According to the first and second aspects of the present invention, the torch main body having a pointed cylindrical shape alone is suitably used as a pencil-type torch, particularly for welding or fusing a horizontal surface of a workpiece. When working on the vertical surface of the workpiece, a pistol-type grip is protruded on the side of the torch main body, so that the wrist is not fatigued and stable in a comfortable posture. Can work.

Further, when the grip is not used, there is no risk of the grip being lost, and the torch body can be used as a pencil type torch with the grip folded.

According to the second aspect of the present invention, when the pistol-type grip is opened from the torch main body, the switch is automatically operated, which is convenient.

[Brief description of the drawings]

FIG. 1 is a side view of a state in which a grip according to an embodiment of the present invention is folded.

FIG. 2 is a side view when the grip is used.

FIG. 3 is a side view showing a usage state of a conventional pencil-type torch.

[Explanation of symbols]

 (1) Torch body (2) Grip (3) Axis (4) Elastic tongue (5) Projection (6) Nozzle (7) Switch (8) Torch lead

Claims (2)

[Claims] 1. A torch for laser processing, wherein a pistol-type grip is foldably provided on a torch body having a pointed cylindrical shape. 2. The torch body according to claim 1, wherein a switch for enabling laser emission is provided on the torch main body, and the switch is operated by a part of the grip when the grip is protruded to the side. Torch for laser processing.