Retainer ring for welding wire

A retainer ring for a welding wire, comprising:

• a pressure plate which is disposed on a welding wire stack wound in a storage container, presses the welding wire stack, and has a central portion in which an opening is formed;
• and
• a plurality of guide wings provided on an outer circumferential portion of the pressure plate to be in contact with an inner wall of the storage container and formed of a flexible material of which a shape is deformable,
• wherein:
• a plurality of insertion parts are formed on the outer circumferential portion of the pressure plate;
• and
• the guide wings are insertion-coupled to the insertion parts,
• wherein:
• each of the insertion parts includes a recessed base part on which at least one protrusion is formed and a cover part forming an insertion space with the base part;
• and
• each of the guide wings includes a coupling part in which at least one through hole coupled to the protrusion is formed and which is positioned in the insertion part and a protruding part which extends substantially horizontally outward from the insertion part and is in contact with the inner wall of the storage container, and
• wherein a protrusion part is formed on a distal end of a lower surface of the protruding part for reducing a contact area between the lower surface of the protruding part and the inner wall of the storage container.