Pulse type dust feeder

Abstract

The invention discloses an impulse type powder feeder which has a structure that an electromagnetic valve is installed on an airway tube which is communicated with the piston cylinder of a piston; a spring is sheathed on the piston rod of the piston; a horizontal through hole, an upper vertical hole and a lower vertical hole are arranged on a support and the upper vertical hole and the lower vertical hole are arranged over and under and communicated with the horizontal through hole respectively; a scraping plate on which a powder storage hole with the volume of 1mm<3> to 30mm<3> is arranged ispositioned in the horizontal through hole; the powder outlet of a powder hopper is arranged in the upper vertical hole; the powder inlet of a powder feeding pipe is arranged in the lower vertical hole; an adjusting knob and the piston are arranged at both sides of the scraping plate respectively and one end of the scraping plate is connected with the piston rod of the piston; and the center linesof the adjusting knob, the scraping plate and the piston rod of the piston are located on the same level. The impulse type powder feeder can meet the special requirements in the field of laser cladding and has the advantages of accurate and controllable powder quantity of single feeding as well as accurate and adjustable point of fall and shape of the powder.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and specifically relates to a pulse type powder feeding device, which is especially suitable for use in laser cladding, welding and electronic packaging. Background technique [0002] The rapid development of laser cladding technology has promoted the development of related technologies and equipment such as lasers, metal powder automatic powder feeders and control systems. Metal powder automatic powder feeder is a key component of laser cladding equipment. The performance of the powder feeder is directly related to the appearance and microscopic quality of the laser cladding layer. [0003] At present, there are many types of powder feeders at home and abroad, mainly including drum type powder feeder, scraper type powder feeder, rotary table type powder feeder, screw type powder feeder, electromagnetic vibration powder feeder and ultrasonic vibration powder feeder Wait. In recent year...

AI Technical Summary

Problems solved by technology

However, for the precision laser cladding process with a dimensional accuracy below the millimeter level, the powder feeding volume per unit time of the existing powder feeder is too large, which may easily cause the laser cladding area to be too large and the thickness too thick, increasing the follow-up Processing capacity

When the cladding part of the workpiece is difficult or impossible to carry out subsequent processing, the application of this type of technology is limited

At the same time, the defects on the surface of some workpieces are extremely small (such as small wear pits, cracks, small holes and corrosion pits, etc.). requirements

In addition, when changing different workpieces and cladding positions frequently, the powder feeder must be started and stopped continuously, the operation is complicated, and the accuracy of the powder feeding volume cannot be guaranteed

Therefore, the existing continuous powder feeder cannot meet the needs of the precision laser cladding process

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