Seven-roller diamond wire gantry multi-wire cutting machine tool

The invention discloses a seven-roller diamond wire gantry multi-wire cutting machine tool which comprises a casting rack, an up-down feeding cutting sliding table, a take-up and pay-off platform and a front wire guiding mechanism. Wherein the up-and-down feeding cutting sliding table can slide on the casting rack to form a cantilever connecting structure; the two take-up and pay-off platforms are both arranged behind the casting rack, and take-up and pay-off functions are achieved. The two front wire guiding mechanisms are arranged in front of the casting machine frame and used for guiding the direction of a diamond wire. The stone cutting machine is used for cutting oversized stones, the phenomena of wire jumping, shaking and the like of diamond wires are avoided by increasing the tension force of the wire net, and the stone cutting quality and cutting efficiency can be improved; and the cutting mechanism and the take-up and pay-off mechanism are independent, so that the working shaking of the diamond wire