Expansion sleeve's production mould

The utility model discloses an expansion sleeve's production mould, expansion sleeve includes has the vertical grooved sheet system of rolling up to form by the punching press, the mould is including each other merciful and peaceful public mould benevolence of matched with master model, in the step -by -step removal of sheet between it is located to the in -process that opens and shuts of the merciful and peaceful public mould benevolence of master model, the punching of the connecting strip symmetry at center is followed to the sheet expansion sleeve through setting up first coil stock portion, second coil stock portion, the third coil stock portion in the mould, realizes the multistage gentle coil stock to the sheet, has prevented that the phenomenon of card material, disconnected material from taking place, and it is more equitable to set up, to last blank portion, realizes having realized continuous punching press to the blank collection of setting at the expansion sleeve's of the symmetry of connecting strip both sides sheet, has improved production efficiency.