Synchronous material supporting device of numerical control bending machine

The invention discloses a synchronous material supporting device of a numerical control bending machine. The device comprises a bending head, a bending female die, a fixing base, a linkage block, a guide groove, a fixing block, a blind hole, a first tension spring, a guide groove cavity, a first spring, a connecting plate, a movable base, a fixing shaft, an inner cavity, a first arc guide groove, a second tension spring, a connector, an arc guide hole, an arc pipe, a first arc guide block, a buffer device, a supporting table, second arc guide block, a first arc rack, a connecting gear, a rack wheel, a pinion, an second arc rack and a second arc guide groove. The device is reasonable and simple in structure, low in production cost and convenient to mount. The angle generated by a plate during bending can be synchronously amplified to the material supporting table through amplification transmission mechanisms such as the large gear and the small gear, and therefore, it is guaranteed that the material supporting