Patent ID: 8360120

Claim:
A two-sided planer comprising: a base including a working platen; a plurality of adjusting shafts being disposed adjacent to said working platen; said base further including a lower plane pivoted on said working platen; said lower plane being served as a reference line for said working platen to be longitudinally divided into a front working area and a rear working area; an adjusting base having adjusting holes disposed corresponding to said adjusting shafts for being penetrated by said adjusting shaft; said adjusting base being mounted above said working platen; an accommodating room being concavely disposed on one side of said adjusting base facing said working platen; a pre-pressing plate, at least one pressing shaft, an upper plane, and a progressing shaft being sequentially pivoted within said accommodating room along a longitudinal direction of said working platen; wherein, said pre-pressing plate is arranged at said front working area; said pressing shaft, said upper plane, and said progressing shaft are arranged at said rear working area; and a floated pressing unit being pivoted within said accommodating room of said adjusting base; said floated pressing unit being further situated between said pre-pressing plate and said pressing shaft and is arranged at said front working area; said floated pressing unit including an axle shaft, plural pressing rings and plural elastic propping elements; wherein, said axle shaft, pivoted to said adjusting base, radially defines a plurality of horizontal cross-sections, each of which has a plurality of receiving recesses disposed around an outer surface of said axle shaft; said pressing rings being respectively superimposed on said axle shaft with respect to said cross-sections; a certain spacing being defined between an inner surface of said pressing ring and said axle shaft; said elastic propping elements being received in said receiving recesses; one end of said elastic propping element protruding from said receiving recess to elastically prop against said inner surface of said pressing ring.