| 摘要 |
<p>In a machine for automatically producing flaskless foundry molds by a blow squeeze method between opposed power-operated pattern plates in an opening in a slider which then moves to displace the aperture to a position in which the mold can be ejected, the slider is replaced by two sliders moving in parallel paths on opposite sides of a fixed bolster plate so that two single-sided molds are produced back-to-back, one in each slider. These may be a cope and a drag and may then be assembled together in pairs. Each slider may have two apertures and the molds may be ejected alternately on opposite sides to produce two lines of alternate copes and drags.</p> |
