Split type printing head for coaxial powder feeding additive manufacturing

A split type printing head for coaxial powder feeding additive manufacturing is mainly composed of an optical system, a light powder coupling device and a printing head connecting piece. The printinghead is mainly characterized in that the printing head optical system and the optical powder coupling device are in flexible connection through a flexible sleeve; when the optical system and the lightpowder coupling device move relatively, the flexible sleeve can deform elastically and can still play a sealing role. According to the utility model, the printing head optical system is prevented from being damaged in the additive manufacturing process, the reliability of the additive manufacturing equipment is improved, and the use and maintenance cost of the equipment is reduced. 一种用于同轴送粉增材制造的分体式打印头主要由3部分组成：光学系统、光粉耦合装置、打印头连接件。其主要特征为打印头光学系统和光粉耦合装置之间是通过柔性套筒相连的软连接；当光学系统和光粉耦合装置发生相对运动时，柔性套筒可发生弹性变形，仍能起到密封作用。本实用新型避免了增材制造过程中打印头光学系统被损坏，提高了增材制造装备的可靠性，降低了装备使用和维护成本。