JP2005144548A - Contact chip and welding torch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact chip capable of realizing a low price and reducing the exchange cost. <P>SOLUTION: A plurality of cut-in slits are formed in a welding torch side of a connection part of the welding torch and a contact chip, the outer circumference thereof is tightened by a spring or the like. When the contact chip is changed, the slits are opened. The male screw working of the contact chip is not formed, but straight working or tapering is performed instead. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a contact chip that is inexpensive and can be easily replaced in a short time.

Conventionally, connection (replacement) of the welding torch and the contact tip is carried out by turning a female screw on the contact tip side and a female screw on the welding torch side and rotating itself.

In consumable electrode wire type gas shield welding, there is a contact tip for the purpose of feeding and welding position aiming. During welding, the material is always exposed to extremely high temperature due to the relationship between power supply to the consumable electrode wire and arc caused by welding. Since the consumable electrode wire passes through the inner diameter of the contact tip while softening occurs, the inner diameter hole is deformed due to friction and electric corrosion caused by power feeding, and welding becomes unstable. .

In such a case, the connection (exchange) of the welding torch and the contact tip is performed by turning the male screw on the contact tip side and the male screw on the welding torch side, so that excessive labor and time are required.

The ratio of time and labor is also high in the processing of male screws for contact tips and female screws for welding torches.

This raises the price of contact chip products and results in higher work costs.

The present invention is intended to address these problems of the prior art, and an object of the present invention is to provide a contact tip and a welding torch capable of reducing the contact tip price and the replacement cost.

Means to solve the problem

In order to achieve the above object, the contact tip and the welding torch according to the present invention are characterized in that the number of contact tip processing steps and the contact tip replacement step can be reduced.

Further, the contact tip is characterized in that a connection portion with the welding torch is processed straight or tapered (without screws).

Also, the connection part of the welding torch with the contact tip has a plurality of interrupt slits, and the outer periphery is tightened and connected by a spring or the like.

The invention's effect

According to the present invention, the contact tip and the welding torch can be reduced in the number of man-hours required for replacing the contact tip to the welding torch and the total cost can be reduced by reducing the male threading of the contact tip.

BEST MODE FOR CARRYING OUT THE INVENTION Best modes (examples) for carrying out the present invention will be described with reference to the accompanying drawings.
Fig. 1 is an assembly drawing of contact tip and welding torch (main body side omitted)
Fig. 2 shows the difference in the shape of the contact tip in Fig. 1. Fig. 3 shows the details of the connection part of the welding torch with the contact tip. Figs.
Fig. 6 shows the inner tube inserted from the opposite side of the welding torch

溶接トーチの反対側から挿入されるインナーチューブの外観図である。 FIG. 3 is an external view of assembly of a contact tip and a welding torch (main body side omitted). It is a contact chip shape difference of FIG. It is a connection part detailed external view with the contact tip of a welding torch.

It is an external view of the inner tube inserted from the opposite side of a welding torch.

Explanation of symbols

1 is the tip of the welding torch (for connection to the contact tip)
2 and 3 are 2 types of contact tips (3 small contact tips)
4 is a set groove such as a spring 5 is a tightening interrupting slit 6 for contact with the contact tip 6 is a processing hole 7 for connecting to the contact tip, 8 is a tip connecting portion 9 of the contact tip welding torch, and a welding torch 9 of the inner tube Is used as a depth stopper when connecting contact tips.

Claims (3)

Contact tip is characterized in that it can be attached to a welding torch (tip body) without using a screw-in method, but an insertion and tightening method, so that the connecting part is straight or tapered, making it easy to replace and reducing processing costs. A welding torch which can be connected to the contact tip of claim 1 by straightening or tapering the inside of the tip body tip and inserting a plurality of interrupts in this portion and tightening with a spring or O-ring. In the case of a small-diameter contact chip, the contact chip is created with the same outer diameter with cutting and hole machining as the main component.

Images