| 摘要 |
<p>The improvements consist in using as blocking means for a slide (1), a plurality of permanent magnets (11) arranged in the dolly or sliding base (12) for said slide (1) so that said permanent magnets (11) appropriately fixe in their respective housings and in variable number and arrangement as a function of the characteristics of each slide (1) are capable of locking the slide (1) with respect to the corresponding support (5) when the guides (3) leave the orifices (2) of the slide during the mold opening operation, so that said orifices or housings (2) remain at the precise position required to receive said guides (3) when subsequently closing the mold. Said permanent magnets (11) may also be arranged, besides of placing them on the sliding base (12), on the side guides for the slide (1) and on the safety stop for said slide, in the case where such a stop exists. <IMAGE></p> |
