Automated assembly cell and assembly line for producing sand molds for foundries
A mold assembly cell for sand mold production comprising a turntable wherein sand cores and other mold parts (which together cooperate to define the casting cavity of the sand mold) are automatically and progressively assembled following a sequential pre-programmed schedule by programmable robots located in proximal relationship with the turntable and a core shooting machine. The assembly turntable rotates clockwise or counterclockwise to permit placement of progressively more-complete mold packages in each of at least three assembly stations to allow the robots to reach the molds being assembled at different angles for simultaneously setting the sand cores and other parts of the mold according to said pre-programmed assembly schedule. Also a mold assembly line comprising a plurality of the foregoing assembly cells to form sand molds for casting complex-geometry aluminum parts, such as aluminum engine blocks and cylinder heads, with greater flexibility, efficiency and productivity.
1. A mold assembly cell for preparing a mold for metal casting, from sand cores and other mold components, comprising a turntable which is structured to be cyclically positionable to at least three mold assembly stations; programmable turntable robots in at least one of said assembly stations for progressively assembling said mold by securing a plurality of sand cores and/or other components of said mold to an incipient mold package and wherein said assembly stations are arranged along a circular path within said assembly cell, within close proximity to and within reaching distance of said robots, said turntable being capable of rotating in a clockwise or counter clockwise direction, wherein said turntable having cutouts towards the center of said turntable, said programmable turntable robots being positioned for handling and positioning said sand cores and/or other mold components into said incipient mold package in a predetermined assembly sequence, at said assembly stations; and means for withdrawing said incipient or complete mold package from said assembly cell for continuing its assembly in another assembly cell or for its further processing or for carrying out said metal casting.
2. A mold assembly cell according to claim 1 , further characterized by said turntable comprising a surface rotatable about a vertical shaft for stopping the rotation in three operational positions at said assembly stations, where the surrounding robots are positioned to set the sand cores and/or other mold components in the incipient mold package being assembled.
3. A mold assembly cell according to claim 1 further characterized by said turntable having a generally triangular shape.
4. A mold assembly cell according to claim 3 further characterized by said cutouts being formed on the sides of the triangular shape of the turntable to facilitate access of the robots or of operators to the incipient mold packages.