Abstract: A spring guide retainer is provided for preventing buckling of a spring during spring compression as an upper die moves toward a lower die in a stamping operation. The spring guide retainer comprises a spring guide housing to hold the spring location, a spring guide holder fixed to the upper die to promote spring alignment, and a spring guide pin to maintain alignment of the spring. A screw associated with the spring guide pin is receivable through a pocket of the spring guide housing to secure the spring guide pin and the spring guide housing to the pad.

Abstract: A transferring apparatus for a transfer press machine which includes a plurality of working stations disposed in a work-transferring direction and provided with lower dies and upper dies cooperating to press workpieces, so that the workpieces are sequentially transferred between the working stations. A plurality of sets of pairs of left and right carriages are associated with one of the working stations. The spacings between adjacent twos of the sets of the carriages are adjusted in said transferring direction during operation. At least one cross bar is mounted to extend between the left and right carriages of each set and has suction cups mounted on an intermediate portion thereof for holding the workpiece. The cross bar is cyclically movable in the transferring direction and in a vertical direction. A pair of left and right guide bars vertically movably are mounted to extend along opposite sides of the working stations to provide the cyclic motion of the cross bar.

Abstract: A path for retreating movement of a cross bar from a standby position between a drawing mold and a mold of the next step to the drawing mold for holding the workpiece drawn by the drawing mold and a path for advancing movement of the cross bar holding the workpiece to the mold of the next step are formed into an upwardly smoothly curved line, and raising of a blank holder for the drawing mold is stopped temporarily for a period until the workpiece is discharged from the drawing mold by the cross bar. The paths for movement of the cross bar includes no suddenly turning portion and hence, any vibration of the cross bar due to an inertia force is prevented. Even if the paths for movement of the cross bar associated with all the molds are established in the same form, it is avoided that the cross bar or the workpiece interferes with the blank holder in the drawing mold.