Lightweight welding head structure of thick aluminum wire bonding machine

The utility model discloses a light-weight welding head structure of a thick aluminum wire bonding machine, which is decoupled by a lead welding head module which is formed by compositing a traditional four-degree-of-freedom structure into a whole, and an X-axis driving mechanism and a Y-axis driving mechanism are decoupled through an X-axis guide rail and a Y-axis guide rail. When the welding head moves in the X-axis direction, the Y-axis driving mechanism does not move along with the welding head, and when the welding head moves in the Y-axis direction, the X-axis driving mechanism does not move along with the welding head. The Z-axis driving mechanism and the rotary driving mechanism are decoupled through the spline shaft, the rotary driving mechanism cannot ascend and descend along with the welding head when the welding head ascends and descends in the Z-axis direction, and the Z-axis driving mechanism cannot rotate along with the welding head when the welding head rotates; the whole welding machine head