1. The hydraulic press is provided with a screw-down platform, and a slide plate is arranged below the screw-down platform.
2. The slide plate is provided with a slideway and a pulley, and the upper end of the pulley is provided with a mold.
3. The position of the upper die corresponds to the installation position of the lower platen, and the upper die on the pulley moves to the installation position of the lower platen through the slide plate.