Metal electrical arc spraying coater portable electric arc spraying gun and special pressing plate triangular notch electric nozzle

Abstract

The invention provides a portable wire arc spray gun of metal wire arc spraying machine, which includes a handle, a wire feeding mechanism, a spray gun part, etc; the wire feeding device of the wire arc spray gun consists of a retaining wire static clamp head and a wire feeding dynamic clamp head; the wires arranged on a crank shaft linked with a motor ad clamped by the clamp head are evenly fed to the spray gun part. The invention also provides a pressure plate triangular hole conductive nozzle specially used for the spray gun part, to improve the conductivity and wire feeding stability of the conductive nozzle. The portable wire arc spray gun of the invention is not only applicable to large-capacity equipments and large space spray painting operation, but also applicable to spray painting operation on the inner wall of small containers or in the small space, with the manufacturing cost and processing precision one third lower than those of the current general products.

Description

technical field [0001] The invention belongs to the field of metal thermal spraying, and in particular relates to the technical improvement of a portable arc spray gun device of a metal arc spraying machine. Background technique [0002] At present, in the field of metal thermal spraying, constant-speed wire feeders are usually used at home and abroad to feed wires. The power of the constant-speed wire feeder motor is transmitted to the wire through the friction of the reduction mechanism and the rollers. There are many intermediate links and large energy losses. The process of feeding wire is similar to rolling steel bars. From the perspective of energy transfer, the efficiency is very low. It is only a small part of it that is really used to overcome the advancing resistance of the wire. This type of constant speed wire feeder is not compact enough, bulky, heavy, and has a short service life, so it is not suitable for working on the inner wall of a small container and in ...

AI Technical Summary

Problems solved by technology

This type of constant-speed wire feeder is not compact enough, bulky, heavy, and has a short service life, so it is not suitable for working on the inner wall of a small container and in a limited space; in addition, because its driving gear is made of insulating materials, it is easy to wear

The constant-speed wire-feeding mechanism of arc spraying machine commonly used at home and abroad has been fundamentally improved in the working principle and structural design. However, failures often occur during the spraying operation, and the force and static friction resistance is large. The wire pressing roller is easy to damage the surface of the wire, and even presses into traces. The phenomenon of staying and waiting, and the power loss of the motor is large, which affects the quality of the arc spraying coating

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