Fiber yarn heating machine for polyester fiber spinning process

The present invention provides a fiber yarn heating machine for a polyester fiber spinning process. The machine structurally comprises a feed hole, a heating spiral extrusion cavity, a setting structure, a cooler, a case, a rotating motor, a display controller, a gearbox and a winder. By arranging a cutting setter, polyester fibers are processed by a triangular ring knife, so that an outer ring ofan extruded polyester fiber spun yarn is in the concave-convex shape; then the polyester fiber spun yarn enters a slotted hole along a support guide frame, the incoming polyester fiber spun yarn is shaped by a shaping knife rest on the left side, and scratches outside the polyester fiber spun yarn are eliminated, so that the exterior of the polyester fiber spun yarn is the smooth surface; then the polyester fiber spun yarn enters a protective seat through a through hole, so that the effect of eliminating burrs of the polyester fiber spun yarn is achieved and the burrs are prevented from affecting the appearance of th