Contact tube assembly and strip

Abstract

The invention provides a contact tube assembly and a strip submerged arc surfacing machine head, relates to the field of strip surfacing equipment, and solves the problem of unstable welding quality in the prior art. The contact tube mounted on the strip submerged arc surfacing machine head comprises an integral electrode, a single-petal electrode, an electrode connecting plate, an electrode pressing plate and an electrode pressing mechanism, wherein the electrode connecting plate is connected with the integral electrode and the electrode pressing plate, the electrode pressing plate is connected with the single-petal electrode through a conductive cable, and the integral electrode and the single-petal electrode are oppositely arranged and used for clamping a welding strip; the electrode pressing mechanism comprises a lever mechanism and a first elastic piece, the lever mechanism is fixedly connected with the electrode connecting plate, one end of the lever mechanism is connected with the first elastic piece, the other end of the lever mechanism is connected with the single-petal electrode, and the electrode pressing mechanism is used for pushing the single-petal electrode to the integral electrode to clamp the welding strip. The contact tube assembly provided by the invention enables the welding strip to be in good contact with the electrode, and the welding quality is improved.

Description

technical field [0001] The invention relates to the field of strip surfacing equipment, in particular to a conductive tip assembly and a strip submerged arc surfacing machine head. Background technique [0002] At present, the welding strip used in strip surfacing generally has the problem of uneven thickness, and the existing strip submerged arc surfacing machine head cannot adjust the gap at the contact tip, and cannot adjust the pressing force and adjustment of the welding strip at the end. Stable contact, this situation will cause the welding quality of the ribbon conveying to be less stable. [0003] When the existing strip surfacing equipment is welding, the welding strip is sent into the wide and fixed matching area between the welding strip driving wheel and the pressing wheel, and the welding strip driving wheel transmits the power from the DC motor and the reducer, and is compressed The handwheel adjusts the pressing wheel assembly, adjusts the pressing force of t...

AI Technical Summary

Problems solved by technology

[0002] At present, the welding strip used in strip surfacing generally has the problem of uneven thickness, and the existing strip submerged arc surfacing machine head cannot adjust the gap at the contact tip, and cannot adjust the pressing force and adjustment of the welding strip at the end. Stable contact, this situation will cause the welding quality of the ribbon conveying to be less stable

[0003] When the existing strip surfacing equipment is welding, the welding strip is sent into the wide and fixed matching area between the welding strip driving wheel and the pressing wheel, and the welding strip driving wheel transmits the power from the DC motor and the reducer, and is compressed The handwheel adjusts the pressing wheel assembly, adjusts the pressing force of the pressing wheel on the welding belt, and relies on the friction between the driving wheel and the pressing wheel to make the welding belt move vertically downward. To ensure normal belt feeding, the driving wheel and the pressing The pressure exerted by the wheel on the welding strip is moderate, too tight will cause indentations on the surface of the welding strip and affect the welding quality, and too loose will cause the welding strip to slip and cause the supply to be cut off. The tightening wheel needs to be adjusted manually, and the adjustment requirements for the debugging personnel are relatively high, which also leads to more time spent on assembly and debugging, and may require multiple adjustments to meet the production requirements

The electrode has serious heat during the welding process and is easily deformed, resulting in the inability to stably compress the welding strip

The arc burning point is generally in an irregular swimming state, which will lead to an unbalanced heating state at both ends of the welding strip, resulting in poor weld formation and slag inclusions at the edge

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