Automatic cutter used for cutting thermal insulation board of refrigerator car

The invention discloses an automatic cutter used for cutting a thermal insulation board of a refrigerator car. The automatic cutter comprises a supporting frame, a conveying supporting system, a cutting supporting system, a rack, a dust collecting system and a control system, wherein the control system is fixedly arranged at one side of the supporting frame; the dust collecting system is arranged at the other side of the supporting frame; single-side longitudinal cutter systems which are oppositely mounted are arranged on positions at the two sides above the supporting frame; grooved rollers are fixedly arranged on the front-to-rear bottom and the right-to-left bottom of the supporting frame; one single-side longitudinal cutter system is arranged at each of the front end and the rear end of the supporting frame; and a width cutter, a step groove cutter and a width step cutter are fixedly arranged below a combined cutter tool rest. The automatic cutter used for cutting the thermal insulation board of the refri