PURPOSE: To surely bend and pick out a gate from a base end part, by installing a pair of first rollers which upward incline a gate sticking to a package together with a lead frame, and a pair of second rollers which downward incline the gate, on the carrying-out side of a mold.
CONSTITUTION: A pair of first rollers 19 which clamp a lead frame l and upward incline a gate 5 sticking to a package 2 together with a lead frame 1, and a pair of second rollers 14 which downward incline the gate 5 are installed on the carrying-out side of a mold. When the lead frame l is carried, it is upward inclined 10-20° from the horizontal direction together with the gate 5, as the result of cooperation of both pressing parts l7b of a bending roller 17 and both abuttting parts 18b of a retaining roller 18, so that cracks are generated in the base end part of the gate 5 connected with a package 2. Next the gate 5 is downward inclined 20-25° from the horizontal direction with both gate break parts 13b of a gate break roller 13. Thereby the gate 5 is bent and picked out from the base end part where the cracks are generated.
TAKEGAWA YUJI
TOSHIBA CORP