Synchronous powder feeding device for laser cladding machining

Abstract

The invention provides a synchronous powder feeding device for laser cladding machining. The synchronous powder feeding device comprises a large-size powder storage chamber, a small-size powder storage chamber, a powder hopper, a motor and a shell; the large-size powder storage chamber and the small-size powder storage chamber are connected through a plastic hose I, and a solenoid valve is arranged between the large-size powder storage chamber and the small-size powder storage chamber; the upper end of a powder feeding shaft is communicated with the small-size powder storage chamber; the lower end of the powder feeding shaft is arranged above a rotating shaft, and an interval is reserved between the lower end of the powder feeding shaft and the rotating shaft; the powder feeding shaft can adjust a distance between the powder feeding shaft and the rotating shaft through an adjusting device; the rotating shaft is connected with an output shaft of the motor, and the rotating shaft is supported on the shell through a bearing; the upper end of the powder hopper is communicated with the shell; and the lower end of the powder hopper is connected with a nozzle through a plastic hose II. According to the synchronous powder feeding device provided by the invention, a powder falling amount can be adjusted by controlling a distance between the lower end of the powder feeding shaft and the rotating shaft. Particularly, when the powder feeding amount is large, a phenomenon of discontinuous powder feeding caused by limit on the distance between the lower end of the powder feeding shaft and the rotating shaft can be avoided. Furthermore, the time interval of two times of connection of the solenoid valve can be set, so that automatic feeding can be realized, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a synchronous powder feeding device for laser cladding processing. Background technique [0002] In the laser synchronous powder feeding cladding process, the processing quality mainly depends on the following parameters: processing speed, powder delivery rate per unit time, laser power density distribution, spot diameter and powder delivery speed; among them, powder delivery rate per unit time and powder delivery rate The speed is determined by the conveying characteristics of the powder feeder. The powder feeder is one of the core components in the laser cladding technology. It transports the set powder to the laser molten pool according to the processing technology. The performance of the powder feeder directly affects the quality of the cladding layer and the size of the processed parts, so the development of a high-performance powder feeder is particularly important for laser...

AI Technical Summary

Problems solved by technology

On the other hand, in the disclosed powder feeding devices, gas powder feeding is mostly used for powder feeding. During laser cladding processing, when the amount of powder conveyed exceeds a certain amount, if the applied gas pressure is unstable, it is easy to cause powder The accumulation makes the continuity, consistency and uniformity of powder feeding unsatisfactory

In addition, the structure of the existing cladding device is relatively complex and expensive, so it is necessary to develop a powder feeding device with a simple structure, easy to understand, easy to operate, and economical and applicable

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