Abstract:
Press brake (1) comprising a top tool (2) and a bottom tool (3), for bending or pressing workpieces between said opposing tools; a displaceable upper beam (4), wherein the top tool (2) is mounted upon; a bottom beam (5), wherein the bottom tool (3) is mounted upon; a load bearing frame (61) mounted extending transversally, comprising a concave opening, wherein the bottom beam (5) is mounted on the bottom part; force means (7) mounted between the upper beam (4) and the upper part of the load bearing frame (61) for opposing the upper and lower tools (2, 3); an alignment frame (62) mounted extending transversally, comprising a concave opening, wherein the bottom beam (5) is mounted on the bottom part of the alignment frame (62); sliding means (8) mounted between the upper beam (4) and the upper part of the alignment frame (62).
Abstract:
A multi-platen press having a stationary press table, a movable press table and a simultaneous closing device, the same stroke between the stationary and movable press tables being maintained by having at least one cylinder on each corner of the movable press table, and by having a separate control device associated with each of the cylinders. The control devices are mounted on the press adjacent the corner of the movable table to which its respective cylinder is connected, and each control device is independently adjustable toward or away from the stationary press table. The control devices are each actuated by the movable table to stop the operation of its associated cylinder when the corresponding corner of the movable table reaches a specified distance from the stationary table.