Composite board powder laying device

The utility model relates to the technical field of metal processing, and discloses a composite board powder laying device which comprises two symmetrically-arranged base plates which are fixedly connected through a connecting rod. A powder spreading cylinder is clamped between the two base plates, a rotating shaft which is eccentrically arranged with the powder spreading cylinder is formed at one end of the powder spreading cylinder, one base plate is sleeved with the rotating shaft in an inserted mode, an eccentric locking mechanism is arranged at the other end of the powder spreading cylinder, and scale marks are arranged at the bottom of one base plate. The position of the lowermost end of the powder laying barrel can be adjusted through the eccentrically arranged powder laying barrel, so that powder layers with different thicknesses can be laid, and different working condition requirements can be met; and the lowest end position of the powder spreading cylinder can be visually expressed through the scale