Shearing mechanism in a machine for attaching a terminal to a conductor

摘要

A machine is disclosed for inserting terminals into cavities of a bobbin to terminate the ends of electrical windings. The machine includes a shear mechanism that separates the terminals from the carrier strip and then guides the terminals during insertion thereof. The shear mechanism includes a pair of links that form a toggle having a center pivot that is attached to the piston rod of an air cylinder. Movement of the toggle links in turn moves a pivoting lever that causes the shear blades to reciprocate. As the piston rod is made to extend, the links straighten and then pass center a small amount until a stop setscrew is engaged. As the links straighten the shear blades enter the die and sever the segments of carrier strip from the terminals. As the links pass over center the shear blade is partially withdrawn so that it clears features projecting from the sides of the terminals while a guide portion of the blade remains in guiding engagement with the severed terminals during insertion thereof.