Patent ID: 8820134
Filing Date: 2014-09-02
Classification: B21D

Abstract:
1. A panel bender for making bends on a sheet metal sheet, said panel bender comprising: a substantially C-shaped main structure provided with a fixed element and a mobile element supporting and clamping in a predetermined position on a plane a sheet metal sheet to be bent; a substantially C-shaped blade holder structure connected to said substantially C-shaped main structure, the substantially C-shaped blade holder structure being mobile inside an inner space defined by said fixed and mobile elements of said substantially C-shaped main structure by vertical guides placed at right angles with respect to a plane of said sheet metal sheet to be bent; said substantially C-shaped blade holder structure being provided with an upper blade and a lower blade configured to move into contact with a surface of said sheet metal sheet to be bent; said substantially C-shaped blade holder structure configured to move on a predetermined trajectory, whereby during movement on the predetermined trajectory said upper and lower blades deform said sheet metal sheet clamped between said fixed and mobile elements of said substantially C-shaped main structure; wherein said substantially C-shaped blade holder structure further comprises respective pairs of upper and lower wedge-shaped slides, wherein respective vertical faces of said wedge-shaped slides are connected to said vertical guides and run along said vertical guides, and wherein respective inclined faces of said wedge-shaped slides are connected to said substantially C-shaped blade holder structure; wherein said panel bender further comprises linear actuators connected at one end thereof to said substantially C-shaped main structure and at the other end thereof to said wedge-shaped slides, thereby defining movements of said wedge-shaped slides in a horizontal direction and in a vertical direction with respect to the sheet metal sheet; and wherein said panel bender further comprises a numeric control system for governing and synchronizing actuation of said linear actuators.