Device for application of surface pressure in dual belt presses

Claim 1

A dual band press assembly comprising: an upper and a lower press band unit each comprising a pair of rotative guide cylinders and an endless press band arranged in driven engagement about each of said pair of guide cylinders, said press band units being arranged one above the other with said endless press bands having inner surfaces engaged about said guide cylinders and outer surfaces arranged to move in pressing engagement with each other, said outer surfaces of said press bands being particularly adapted to apply surface pressure to workpieces passing therebetween; and roller assembly means provided in each of said upper and lower press band units for applying surface pressure to said endless press bands against said inner surfaces thereof, said roller assembly means comprising a plurality of longitudinal support beams arranged adjacent and parallel to each other, a plurality of spindles mounted to extend continuously between said support beams, pressure rollers arranged to be in direct contact with said inner surfaces of said endless press bands on one side of said roller assembly means, said spindles having said rollers rotatively mounted thereon and defining generally parallel axes of rotation for said rollers, said rollers being mounted in rows extending between each pair of said longitudinal support beams with each of said rows having rollers arranged offset relative to each next adjacent row, and a support plate extending across said roller assembly means provided on a side thereof opposite the side on which said rollers contact said inner surfaces of said endless press bands.