A delivery device and method for additive manufacturing of laser cladded short straight wires

By using roller clamping and gas nozzle blowing away residual sections in the laser cladding short straight filament conveying device, the problems of jamming and falling off of short straight filaments during the conveying process are solved, continuous and stable conveying is achieved, and the forming quality of the cladding layer and the stability of the equipment are improved.

CN122184661BActive Publication Date: 2026-07-24SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV
Filing Date
2026-05-18
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing technology, short straight wires have problems such as discontinuous wire feeding, easy detachment, low alignment accuracy, easy aging of wire tubes, high maintenance costs, and uncontrollable wire feeding rate during the conveying process, which affect the forming quality of the cladding layer and the stability of the equipment.

Method used

A conveying device is adopted, which includes a wire tube with a wire feeding channel, rollers near the bottom and gas nozzles. The rollers are symmetrically arranged along the vertical plane of the wire feeding channel. The continuous and stable conveying of short straight wires is ensured by the roller clamping and straightening, the gas nozzle blowing away the residual section and the wire replenishment mechanism.

Benefits of technology

It effectively solves the problems of jamming and falling off of short straight wires, improves the continuity and forming quality of the cladding process, enhances the coupling accuracy between the wire and the laser focus, extends the service life of the equipment, and reduces maintenance costs.

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Abstract

The present application relates to the technical field of additive manufacturing, in particular to a conveying device and method for additive manufacturing laser cladding short straight wire, wherein the conveying method comprises S1, continuously feeding a plurality of short straight wires into a wire feeding channel in a head-to-tail abutting manner, so that the tail end of a previous short straight wire abuts against the front end of a subsequent short straight wire; pushing the short straight wire by a wire feeding mechanism, so that the short straight wire sequentially passes through rollers for clamping and collimation, and then enters a molten pool for laser cladding; S2, when a single short straight wire is cladded to a residual section and is about to be separated from the rollers, triggering a high-pressure gas nozzle to spray inert gas to blow the residual section away from a preset gap, and simultaneously suspending laser output and wire feeding mechanism movement; S3, feeding a next uncladded short straight wire at a set wire supplementing rate, and when the front end of the next uncladded short straight wire approaches the tail end position of the previous short straight wire, continuing the cladding process. The present application effectively solves the problems of jamming and falling off in the conveying process of short straight wire, and improves the continuity of the cladding process and the forming quality.
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