| 摘要 |
<p>A mold making machine for producing molds for cast welding rods has a vertical frame with an open area in the bottom thereof for the reception of a sand filled flask and motion imparting means on the upper end thereof, first and second pressure plates positioned in the vertical frame for vertical movement, the motion imparting means connected to said first pressure plate and a plurality of spaced pointed small diameter rods attached to the first pressure plate in depending relation thereto and arranged for registry with a plurality of spaced openings in said second pressure plate which is positioned therebelow, interconnecting means between the first and second pressure plates arranged to permit limited relative movement thereof whereby the first pressure plate upon being moved downward by said motion imparting means engages the second pressure plate therebelow and moves the same downwardly into the sand filled flask when the pointed rods have engaged the sand therein so as to form elongated small diameter spaced vertical cavities therein. This invention is distinguishable from others by reason of the arrangement of the pressure plates, one having the pointed rods and the other having openings through which the rods extend.</p> |
