JPH0639549A - Welding torch - Google Patents

Abstract

PURPOSE:To facilitate output adjustment of a welding machine by fitting a photodetector to receive an optical signal of an optical remote control device for output adjustment to a holder of the welding torch and connecting the photodetector to a connector via a cable. CONSTITUTION:The optical remote control device 2 for output adjustment is operated toward an optical remote control device 3-6 fitted to the holder 3-1 of the welding torch 3. An output adjustment signal transmitted from the optical remote control device 2 for output adjustment is received by the optical remote control device photodetector 3-6, converted into an electrical signal and transmitted electrically to the welding power source side via a cable part 3-4. Consequently, a burden of an operator at the time of mobile welding work is reduced. In addition, an accident of disconnection of the cable is reduced. Further, a torch switch 3-3 and the optical remote control device photodetector 3-6 are connected to the connector 3-5 by the signal cable 3-4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arc welding machine for feeding a consumable electrode by using an electric motor, supplying a welding current to the consumable electrode through a current-carrying portion, and performing welding in a shield gas atmosphere. Regarding torch.

[0002]

2. Description of the Related Art Generally, a welding torch of this type has a main function of supplying a consumable electrode to a melting portion,
The output adjustment of the arc welding machine is separately performed by using a wire-type remote controller, and therefore, when welding, separate components having different functions were used.

As shown in FIG. 3, a conventional welding torch 3 includes a holder 3-1, a connecting fitting 3-2, a torch switch 3-3 attached to the holder 3-1 and a holder 3-1. Cable part 3-4 for connecting the connection fitting 3-2,
The connector 3-5 is led out from the connection fitting 3-2. Then, a remote controller 4 including a welding voltage regulator 4-1 and a welding current regulator 4-2, a connector 4-3, and a cable portion 4 connecting the connector 4-3 and the remote controller 4.
-4 constitutes a wired remote controller.

FIG. 4 shows an electric circuit diagram of a conventional welding torch and a wired remote controller. The torch switch 3-3,
The welding voltage regulator 4-1 and the welding current regulator 4-2 are electrically connected to the connectors by cables.

[0005]

The conventional welding torch does not have a function of adjusting the output of the welding machine, and a wire-type remote controller is used when adjusting the output. This wire-type remote controller uses a stretched cable when welding in a large work area, and when moving to perform welding work, the cable also needs to be moved, which is a burden on the operator. . Frequent movement of the cable is apt to cause an accidental disconnection of the cable, which requires much time for maintenance and inspection of the cable.

In consideration of the above-mentioned conventional problems, the present invention facilitates the adjustment of the output of the welding machine, reduces the burden on the operator during the moving welding work, reduces the accident of cable breakage, and performs maintenance inspection. It is an object of the present invention to provide a welding torch that also reduces the work.

[0007]

In order to achieve the above object, the present invention attaches a light receiving portion for receiving an optical signal of an optical remote controller for output adjustment to a holder of a welding torch, and
It is configured to be connected to a connector via a cable.

[0008]

In the above structure, when the output adjusting optical remote controller is operated toward the light receiving portion of the optical remote controller attached to the welding torch holder, the output adjusting signal is converted into an electric signal and sent to the welding power source side. This signal is transmitted through the cable portion of the welding torch to adjust the output of the welding machine.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A concrete configuration of an embodiment of the present invention will be described with reference to FIG. The same reference numerals as those in the conventional example are used for the same components as those in the conventional example. In FIG. 1, 3 is a welding torch,
The welding torch 3 includes a holder 3-1 and a connection fitting 3-
2, torch switch 3-3 attached to holder 3-1,
It is composed of a connector 3-5, a cable part 3-4 for connecting the holder 3-1 part and the connector 5, and an optical remote controller light receiving part 3-6 provided in the holder 3-1. 2 in the figure is an optical remote controller transmitter for output adjustment.

In the above configuration, when the output adjusting optical remote controller 2 is operated toward the optical remote controller light receiving portion 3-6 attached to the holder 3-1 of the welding torch 3, the output adjusting optical remote controller 2 transmits the signal. The output adjustment signal is received by the optical remote controller light receiving unit 3-6 and converted into an electric signal,
It is transmitted to the welding power source side via the cable section 3-4.

FIG. 2 shows an electric circuit diagram of an embodiment of the present invention. In this embodiment, the torch switch 3-3 and the optical remote controller light receiving unit 3-6 are connected to the connector by three signal cables.

[0012]

According to the embodiments of the present invention, the following effects can be obtained. (1) Since a wired remote controller is not required, the burden on the operator during moving welding work can be reduced.

(2) The number of accidents such as cable breakage and connector contact failure is reduced, and maintenance is facilitated. (3) When performing welding work in a large work area, only one extension cable is required and cost can be reduced.

(4) Since the output adjustment signal can be transmitted in series, only two cables for signal transmission are required, and it is not necessary to use a multi-core cable unlike the conventional wired remote controller.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a welding torch according to an embodiment of the present invention.

FIG. 2 is an electric circuit diagram of the welding torch.

FIG. 3 is a configuration diagram of a conventional welding torch and a wired remote controller.

FIG. 4 is an electrical circuit diagram of a conventional welding torch and a wired remote controller.

[Explanation of symbols]

 2 Optical remote control transmitter for output adjustment 3 Welding torch 3-1 Holder 3-2 Connection metal fitting 3-3 Torch switch 3-4 Cable 3-5 Connector 3-6 Optical remote control receiver

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshiyuki Tabata 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A welding torch in which a holder is provided with a light receiving portion for receiving an optical signal from an optical remote controller for output adjustment, and the light receiving portion is connected to a connector via a cable.