METHOD AND APPARATUS FOR FUSING LEAD WIRES OF COILS TO TERMINALS

摘要

A fusing electrode (36) is mounted on a vertically movable carriage raised by a first air actuator and lowered by gravity into engagement with a commutator tang (120). During a fusing cycle, varying fusing pressure is applied to the tang (120) by means of a fast-acting second air actuator (46) having a downwardly-extending piston rod engageable with the carriage and being controlled by a programmable pressure regulating valve (66). To decrease the response time and increase the follow through of the second air actuator (46), the programmable pressure regulating valve (66) is mounted directly on top of the second air actuator (46) with its air outlet located as close to the cylinder (48) of the second actuator (46) as permitted by the air fittings connecting them. Surge tanks (82, 84, 86) associated with the programmable valve (66) ensure rapid response times.