Patent ID: 7634935
Filing Date: 2009-12-22
Classification: B21D

Abstract:
1. A quick coupling and uncoupling device of tools to a top beam of a press brake, wherein the press brake comprises a top beam and clamping/unclamping clamps delimiting a cavity; wherein each tool presents a tool connection and can be attached to the top beam by said clamping/unclamping clamps acting on said tool connection inserted into said cavity; said clamping/unclamping clamps being movable between a clamping position and a releasing position of the tool connection; wherein the device comprises a plunger, which plunger comprises: wherein the device further presents a groove with a horizontal axis, a lower rim and an upper rim, said groove being allocated on a vertical surface of the tool connection inserted into said cavity; wherein the plunger is allocated inside the clamping/unclamping clamps with its aforesaid aperture opening up to a surface of the clamps which is opposite said groove when the tool is inserted into said cavity; wherein said cursor is of a spherical form and said groove has a V-shaped cross section; wherein the plunger is placed so as to allow the aforesaid terminal part of the cursor to enter within said groove and push against the upper rim of the groove, so as to prevent the tool from falling when the clamping/unclamping clamps are in the releasing position.