JP3009820U - Gas arc welder - Google Patents

Abstract

(57) [Abstract] [Purpose] When welding a long iron material in a gas arc welding machine, the wire feeder on which the welding wire wound on a heavy reel is mounted must be moved frequently. , A light wire feeding device in which a reel is not wound is disclosed. [Structure] A wire feeder not provided with a reel for feeding a welding wire is provided between a wire feeder on which a welding wire wound around a reel is placed and a welding torch, and each wire is provided. Synchronize the welding wire feed of the feeder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, the welding wire wound on the reel is automatically fed to the welding torch by the feeding motor, and the wire is energized from the welding power source through the contact tip, so that the gap between the base metal and the welding wire is increased. The present invention relates to a gas arc welding machine that generates an arc on a wire and melts the base metal and the welding wire itself to perform welding.

[0002]

[Prior art]

 A conventional gas arc welder will be described with reference to FIG. Hereinafter, the same devices will be denoted by the same reference numerals. A conventional gas arc welding machine is composed of a welding power source 1, a gas cylinder 2, a wire supply device 3, and a welding torch 4.

[0003]

[Problems to be solved by the device]

 In this configuration, friction between the welding wire and the wire guide tube when the welding wire passes through the wire guide tube causes a gap between the wire feeding device on which the welding wire wound on the reel is placed and the welding torch. Since the length is limited to about 5 m, when welding a long iron material, there was a problem that the wire feeder on which the welding wire wound on a heavy reel was placed could often be moved. . The task is to solve this problem.

[0004]

[Means for Solving the Problems]

 Between the wire feeder on which the welding wire wound on the reel is placed and the welding torch, the welding wire feed on the wire feeder on which the welding wire wound on this reel is placed and The gas arc welding machine is equipped with a wire feeding device that feeds synchronized welding wires.

[0005]

The gas arc welding machine of the present invention, when welding a long iron material, sends a light welding wire without moving the wire feeder on which the welding wire wound on a heavy reel is placed. Move only the wire feeder to be fed. The terminal wire from the welding power source is connected to the base material, and the switch of the welding torch is turned on (closed), so that the welding wire wound on the reel is placed on the welding wire of the wire feeder. Feeding and welding wire feeding of the wire feeding device for feeding the welding wire are synchronized, the welding wire is fed to the welding torch, and gas arc welding is performed.

[0006]

【Example】

FIG. 1 shows an embodiment of a gas arc welding machine of the present invention, in which 1 is a welding power source, and the welding power source 1 is equipped with a control device 1a. 2 in the gas cylinder, CO _2, CO ₂ mixed gas or argon gas or the like mainly composed of is filled in the gas cylinder 2. Reference numeral 2a is a gas flow rate adjuster, and when performing gas arc welding, the gas flow rate adjuster adjusts the flow rate of CO _{2 and the} like.

Reference numeral 3 denotes a wire feeding device on which the welding wire W wound on the reel 3b is placed. The wire feeding device 3 on which the welding wire W wound on the reel 3b is placed, It comprises a frame 3a, a reel 3b around which the welding wire W is wound, a welding wire feeding motor 3c, and a pair of welding wire feeding rollers 3d, 3d.

A welding torch 4 is provided with a nozzle 4 a and a switch 4 b. 5 is a base material, and the base material 5 is connected to the terminal minus from the power source 1 and the switch 4b of the welding torch 4 is turned on (closed) so that gas arc welding can be performed. It is known.

Reference numeral 6 denotes a wire feeding device for feeding the welding wire W. The wire feeding device 6 includes a frame 6a, a welding wire feeding motor 6c, and a pair of welding wire feeding rollers 6d, 6d. Etc., the reel 3b is not mounted, and therefore the frame 6a is also made small and the weight is reduced. Then, as shown in the time chart of FIG. 2, the wire feeding device 6 for feeding the welding wire W has the welding wire W of the wire feeding device 3 on which the welding wire W wound around the reel 3b is mounted. The motors 3c and 6c are arranged so as to operate in synchronism with the feeding, and are arranged in parallel as shown in the circuit diagram of FIG.

[0010]

[Effect of device]

 As described above, the gas arc welding machine of the present invention, when welding a long iron material, does not move the wire feeding device 3 on which the welding wire wound on a large and heavy reel is placed, Only the wire feeding device 6 for feeding the small and light welding wire is moved. By connecting the terminal minus from the welding power source to the base material and turning on (closing) the switch of the welding torch, the welding wire feeding device 3 on which the welding wire wound on the reel is placed. Feeding and welding wire feeding of the wire feeding device 6 that feeds the welding wire are synchronized, the welding wire is fed to the welding torch without any trouble, and gas arc welding is performed, so welding a long iron material Occasionally, the worker is very tired.

[Brief description of drawings]

FIG. 1 is a front view for explaining a gas arc welding machine of the present invention.

FIG. 2 is a time chart of the gas arc welding machine of the present invention.

FIG. 3 is a circuit diagram of a motor 3c and a motor 6c.

FIG. 4 is a front view for explaining a conventional gas arc welder.

[Explanation of sign]

1 Welding power source 1a Control device 2 Gas cylinder 3 Wire feeding device on which the welding wire W wound around the reel 3b is placed 3a Frame 3b Reel 3c Motor 3d Roller 4 Welding torch 4a Nozzle 4b switch 5 Base metal 6 Welding wire W Wire feeding device for feeding a wire 6a frame 6c motor 6d roller W welding wire F fuse

Claims (1)

[Scope of utility model registration request] 1. A welding wire of a wire feeder mounted with a welding wire wound on a reel between a wire feeder mounted with a welding wire wound on a reel and a welding torch. A gas arc welding machine comprising a wire feeding device for feeding a welding wire synchronized with the feeding.