JPH10180450A - Plasma cutting torch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by providing a handle on the outer face of a torch body, allowing it slidable and movable in the axial direction, and thereby enabling a single cutting torch to deal with difference in the thickness and the shape of a material to be cut. SOLUTION: A handle 14 for holding a torch body 11 movably in the axial direction is provided on the outer face of the torch body 11 which is formed with an insulated casing 13 surrounding the metal fittings 12 of the torch body; the body 11 after the moving is fixedly positioned by pushing the ball 17 of a locking device 16 installed inside the handle 14, into the hole 15 on the outer circumferential face of the body 11. The ball 17 is pushed into the hole 15 with a spring 18; in the case where the torch body 11 is moved in the axial direction, it is moved back and forth by hand, disengaging the ball 17 from the hole 15 and making a freely movable state. Thus, a distance is adjusted between the handle 14 and the torch tip.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma cutting torch using a working gas.

[0002]

2. Description of the Related Art A conventional plasma cutting torch is shown in FIG.
Description will be made based on (b).

In FIG. 3, reference numeral 1 denotes a torch body main body having an electrode (not shown) at the tip and a working gas passage (not shown) in a central axis direction, and an insulating outer member surrounding the torch body main body. And a torch body 2 formed of a copper or copper alloy for supplying a plasma arc from the electrode to a drawn base material (work);
Is an insulating shield cup, 4 is a handle for holding the torch body, 5 is a torch switch provided on the upper surface of the handle 4, and sends a signal for starting or stopping cutting to a cutting power source, and 6 is a torch body main body 1 This is a power cable that supplies cutting current and working gas to the power cable. And FIG.
(A) shows a plasma cutting torch in which the torch body 1 is short, which is used when the thickness of the workpiece to be cut is small and the cutting current is low. The operability is improved because the torch body 1 is short. FIG. 3 (b) shows a plasma cutting torch in which the torch body 1 has a long type, and the work is cut when the place to cut the work is narrow and the hand of the handle 4 and the person holding the handle 4 cannot be reached, or when the work becomes thicker. The current increases,
As a result, the radiant heat generated by cutting increases, and the torch body 1
It is used when it is not possible to hold the vicinity of the tip of the hand by hand.

[0004]

However, the above-described plasma cutting torch of the conventional configuration has a problem that two types of plasma cutting torches must be prepared depending on the difference in the thickness of the work and the shape of the work. .

An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to cope with a difference in plate thickness and a shape of a workpiece with one plasma cutting torch.

[0006]

In order to achieve the above object, a first means of the present invention is provided with a handle which holds a torch body and is slidable in an axial direction.

The second means of the present invention is such that a second handle slidable in the axial direction is provided on an outer peripheral portion of a first handle for holding a torch body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the structure of the first means of the present invention, the torch body can be moved in the front-rear direction with respect to the handle, and it is possible to cope with a difference in plate thickness and a shape of a work.

A second means of the present invention is provided with a second handle slidable in the axial direction on an outer peripheral portion of a first handle for holding a torch body, and moves the second handle and the torch body back and forth. Allows the distance between the tip and each handle to be set freely.

Therefore, the distance between the tip of the torch body and each handle can be adjusted with a single plasma cutting torch in response to a difference in the thickness or shape of the workpiece.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to (a) and (b) and FIGS. 2 (a) and (b).

Reference numerals 2, 3, 4, 5, 6 and the like are the same as those of the conventional example, and the configuration other than the torch body and the handle is the same as that shown in the conventional example, so that the description is omitted.

(Embodiment 1) A torch body main body 12 having an electrode (not shown) at the tip and having a working gas passage in a central axis direction, and an insulating jacket surrounding the torch body main body 12 13, a handle for holding the torch body 11 slidably in the axial direction, 15 a hole provided on the outer surface of the torch body 11 positioned in the axial direction of the handle 14, and 16 a handle 14 The hole 15 of the torch body 11 provided inside
This is a locking device having a ball 17 that engages with the presser and a spring that presses the ball 17.

In the above configuration, the torch body 11 can be moved back and forth with respect to the handle 14, and the torch body 11 after being moved is provided inside the handle 14 in the hole 15 on the outer peripheral surface of the torch body 11. Can be positioned by the ball 17 of the locking device 16 being inserted,
The force for pushing the ball 17 into the hole 15 is provided by a spring 18. When moving the torch body 11 back and forth by hand, when the torch body 11 is moved back and forth by hand, the ball 17 comes out of the hole 15 and at the same time the spring 18 contracts, so that the torch body 11 is free with respect to the handle 15. The torch body 11 can be moved, and the distance between the handle 14 and the tip 2 can be adjusted by inserting the ball 17 into another hole 15. When the number of holes 15 increases in the axial direction, the distance between the tip of the torch body 11 and the handle 14 can be adjusted in multiple stages.

In the first embodiment, the locking device 16 for the hole 15 is constituted by the ball 17 and the spring 18. However, another locking mechanism such as a leaf spring may be used.

The locking device 16 may be a locking mechanism that presses the hole 15 from outside the handle 14 through the inside of the handle 14.

As described above, according to the first embodiment, the torch body 11 can be moved back and forth with respect to the handle 14, so that a single plasma cutting torch can be used to change the thickness and shape of the workpiece. Can be handled.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described and will be described in detail with reference to FIGS.

2 (a) and 2 (b), reference numeral 20 denotes a first handle slidably provided on a torch body 21 in the axial direction, and reference numeral 22 denotes an outer peripheral portion of the first handle 20 slidably provided in the axial direction. The second handle and the second handle 22 can move in the axial direction with respect to the first handle 20, and the torch body 21 can move between the first handle 20 and the second handle 20.
It can move in the axial direction with respect to the handle 22.

FIG. 2A shows a state where the torch body 21 is extended most with respect to the second handle 22, and FIG. 2B shows a state where the torch body 21 is contracted most with respect to the second handle 22. .

According to the configuration of the second embodiment, the torch body 21 can be moved back and forth with respect to the second handle 22, so that a single plasma cutting torch can be used to change the thickness and shape of the workpiece. Can be handled.

[0022]

As is apparent from the above description, according to the first means of the present invention, a handle is provided which is movable in the axial direction of the torch body, the first handle for holding the torch body, In the second means, a slidable second handle is provided, and the torch body can be moved back and forth with respect to each handle. According to the present invention, the distance between the tip and each handle is adjusted in accordance with the difference, and the workability is significantly improved.

[Brief description of the drawings]

FIG. 1A is a partial plan sectional view of a plasma cutting torch according to a first embodiment of the present invention. FIG. 1B is a side view of the plasma cutting torch.

FIG. 2 (a) is a partial plan sectional view showing an extended state of the plasma cutting torch in the second embodiment; and (b) is a partial plan sectional view showing a contracted state of the plasma cutting torch.

FIG. 3A is a side view of a short type of the conventional plasma cutting torch. FIG. 3B is a side view of a long type of the plasma cutting torch.

[Explanation of symbols]

 11, 21 Torch body 14 Handle 20 First handle 22 Second handle

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Satoshi Saito 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A torch body formed of a torch body having an electrode at a tip and a working gas passage in a central axis direction, and an insulating jacket surrounding the torch body, and holding the torch body. A plasma cutting torch with a handle that can slide in the axial direction, and the length between the tip of the torch body and the handle can be adjusted according to the thickness and shape of the workpiece. 2. A torch body formed of a torch body having an electrode at an end and a working gas passage in a central axis direction, and an insulating jacket surrounding the torch body, and holding the torch body. With a first handle,
Plasma cutting in which a cylindrical second handle covering the outer periphery of the first handle is slidably provided in the axial direction, and the length between the tip of the torch body and each handle can be adjusted according to the thickness and shape of the work. torch.