HRP20161592T1 - Automatic machine to bend electro-velded meshes - Google Patents

Claims (7)

1. An automatic device for bending electro-welded nets, which are formed from longitudinal and transverse wires (1), having different lengths and/or different pitch distances, and the machine contains at least one bending unit (U) provided with a plurality of pins for bending (2, 2-1, 2-2), driven in a vertical direction, said bending pins are adapted to be spaced apart by a distance equal to the pitch of the web (R) being bent and a plurality of bending arms (3, 4, 4-1), is driven with 2-axis motion to bend the wires around the bending pins, said bending unit (U) is mounted on the main body (10) of the machine and is capable of moving in a direction transverse to the direction in which moves the web (R), said bending unit (U) is also capable of rotating about its vertical axis (W), indicated that the bending pins (2, 2-1, 2-2) are driven with their respective drives ( 8) which are located in the bending unit (U), which are adapted to be selectively and independently driven in accordance with the appropriate program via the control unit, and the bending arms (3, 4, 4.-1) are connected to the bending unit (U) via the articulated kinematic mechanism (11-13, 16-19) and adjusted are to be selectively and independently driven in accordance with said respective program through said control unit to operate with respective bending pins. 2. Automatic device for bending electro-welded nets, according to claim 1, characterized in that the drives (8) are suitable for driving the pins for bending in the vertical direction (2, 2-1, 2-2) via the corresponding bearings (5,6) , 6-1) which are held in their position by guides (7), said vertical displacement is adjusted to allow lifting of the bending pins (2, 2-1, 2-2) above the work surface. 3. Automatic device for bending electro-welded nets, according to claim 1, characterized by the fact that the specified articulated kinematic mechanism is provided with an activator (11), whose shaft (13) drives, via a lever (12), a piston rod (16), which is rotatably connected on the counter-acting arm (17) which is hinged to the bending unit (U). 4. Automatic device for bending electro-welded nets, according to claim 3, characterized in that each lever (12) is integrally connected to the specified shaft (13) by means of a connecting pin (14) controlled by a dial device (15). 5. Automatic device for bending electro-welded nets, according to claim 3, characterized in that the pin (18) is adapted to enable rotation between the lever (12) and the connecting rod (16), while the pivot (19) is adapted to enable rotation between the connecting rod (16) and oppositely acting arm (17). 6. Automatic device for bending electro-welded nets, according to claim 2, characterized in that the bearings (6, 6-1) holding the bending pins (2-1, 2-2) are provided on their upper surface with positioning slots (30), in which a plurality of selectively engaged detent pins (22) are actuated by means of springs and are engaged by their respective bending pins (2-1, 2-2), said detent pins (22) being actuated with respective motorized arms ( 24-27), which are hinged to the retaining rod (28) fixed to the main body (10) of the machine. 7. Automatic device for bending electro-welded nets, according to claim 1, characterized by the fact that two bending units (U1, U2) are provided, placed on a stand (P) that is located along the longitudinal axis of the net (R) that can be moved by two rails (G) held by the body (10) of the machine, the rails (G) are made on both sides of the net (R) and in the same direction as the longitudinal axis of the net (R).