APPARATUS AND METHOD OF REDUCING RESIDUAL STRESS OF LEAD FRAME USING LASER BEAMS BY ANNEALING ONLY LEAD OF LEAD FRAME

摘要

In the apparatus of the present, in order to reduce the residual stress present in finished lead frame punching press, it is related to reducing the device and method of residual stress in lead frame using laser beam in one embodiment; It leads to lead frame driving device, for lead frame to be moved to driving unit from frame and power supply; Laser generator, for irradiating the laser beam for focusing on the lead portion of movable part of the lead frame; The sensing device D of lead portion when is moved to by the presence of driving device lead frame, its driving laser generator removal S for sense lead frame. When detection device detects lid, remaining trees in the lid, when lead is not detected, it is characterised in that the control device including the operation for stopping laser generator.