The invention belongs to the technical field of additive manufacturing, and discloses a
powder spreading device and additive manufacturing equipment. The
powder spreading device comprises a linear rail, a sliding part, a driving mechanism and a telescopic
pipe, wherein the linear rail extends in the first direction; the sliding part is provided with a sliding cavity extending in the first direction, an
enclosure bulkhead forming the sliding cavity is slidably connected to the linear rail, the sliding part is fixedly connected with a
powder laying
assembly, the two ends, in the first direction, of the sliding part are each provided with a first sealing part, and the first sealing parts are used for sealing gaps between the
enclosure bulkhead and the linear rail; one end of the telescopic
pipe is hermetically connected to the first sealing piece, the other end is correspondingly hermetically connected to the linear rail, and the length of the telescopic
pipe in the first direction is adjustable; the output end of the driving mechanism is connected with a sliding piece or a powder laying
assembly. According to the powder spreading device, high-temperature isolation and dust isolation can be achieved on the sliding part, the lubricating performance of the sliding part is improved, the service life of the powder spreading device is prolonged, the use reliability of the powder spreading device is improved, and the maintenance cost is reduced.