Rod member extrusion-molding system and extrusion-molding method therefor

A rod member extrusion-molding system, comprising:

• an extrusion-molding machine extruding a rod member;
• a delivery line receiving the extruded rod member;
• a transfer conveyor receiving the rod member from the delivery line, and transferring the received rod member;
• a measurement device measuring an outer diameter of the rod member when the rod member passes through a measurement position defined on the delivery line, and outputting a measurement result;
• and
• a control device performing feedback control for a transfer speed of the rod member by the transfer conveyor, based on the measurement result of the measurement device,
• wherein supposing that the delivery line is divided into an upstream section at the extrusion-molding machine side and a downstream section at the transfer conveyor side with respect to the measurement position, the delivery line includes
• a first roller conveyor forming a part of the upstream section at least directly upstream of the measurement device, and guiding delivery of the rod member, and
• a second roller conveyor forming the downstream section, and guiding the delivery of the rod member.