Nailing machine for assembling wood pallets or the like

A nailing machine for assembling wood pallets comprising:

• at least one nailing station and advancement and guiding means which form a substantially horizontal resting surface at said nailing station, said nailing station being configured for the assembly of at least two superimposed wood pieces to be assembled by nailing to provide a pallet, said nailing station comprising at least one nailing head associated with at least one nailing stem, which can move along a substantially vertical direction with respect to said resting surface between an inactive position, in which the lower end of said at least one nailing stem is spaced from the upper surface of said at least two superimposed wood pieces, and an active position, in which the lower end of said nailing stem is moved closer to said upper surface of said at least two superimposed wood pieces, said at least one nailing head being feedable with the nails to be used for nailing, further comprising elevation variation means configured for varying the elevation of said upper surface of said two superimposed wood pieces at said nailing station, said means for varying the elevation of the upper surface being actuatable on command in order to move said upper surface to a predetermined elevation, wherein said elevation variation means comprise at least one upper abutment body for a portion of the upper surface of said two superimposed wood pieces, and at least one device for moving said resting surface configured to move on command said resting surface between a lowered position, in which the upper surface of said two superimposed wood pieces is spaced and located below said upper abutment body, and a raised position, in which said upper surface rests against said upper abutment body.