Methods for additively manufacturing composite parts

A method of additively manufacturing a composite part, the method comprising:

• engaging a non-resin component and pushing the non-resin component into a delivery guide by a feed mechanism;
• separately injecting a first part of a thermosetting resin and a second part of the thermosetting resin into the delivery guide;
• mixing the first part of the thermosetting resin and the second part of the thermosetting resin within the delivery guide;
• and
• applying the first part of the thermosetting resin and the second part of the thermosetting resin to the non-resin component to create a continuous flexible line within the delivery guide while pushing the non-resin component into the delivery guide and pushing the continuous flexible line out of the delivery guide, wherein the continuous flexible line comprises the non-resin component and a thermosetting resin component that comprises at least some of the first part of the thermosetting resin and at least some of the second part of the thermosetting resin that was injected into the delivery guide;
• and
• depositing, via the delivery guide, a segment of the continuous flexible line along a print path;
• and
• wherein:
• the delivery guide comprises:
• a first inlet that receives the non-resin component;
• a second inlet that receives the first part of the thermosetting resin ;
• a third inlet that receives the second part of the thermosetting resin;
• an outlet, through which the continuous flexible line is dispensed from the delivery guide;
• a line passage that extends from the first inlet to the outlet;
• and
• an internal mixing structure, configured to operatively combine the first part and the second part of the thermosetting resin within the delivery guide;
• and
• the internal mixing structure comprises at least one mixing guide, positioned within the delivery guide and configured to intermix the first part and the second part of the thermosetting resin.