US 4,899,803 AGranted

Double carriage for automatic tool change in core making machines for casting

OwnerAugustin Arana-Eranainventor

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Abstract

The carriage comprises two sets of motor-driven rollers receiving and expelling the tools or boxes of cores. The carriage further includes a rolling frame having wheels driven by a reduction motor. A further reduction motor is provided in each of two operative sectors of the carriage, which activates a corresponding group of rollers through an intermediary transmission shaft. The carriage also has handling devices for the tools in order to permit and facilitate their periodic cleaning. The handling devices each include a support on which a tiltable arm is assembled, which is activated by a hydraulic cylinder. A plate is positioned on the arm on guides. The plate has clamps to secure the tool or box of cores. The plate is moved by a hydraulic cylinder. The structure may be used for boxes of cores with vertical opening and with the boxes having a horizontal opening as well.

Claims3

Dependent claims

Double carriage for automatic tool change in core making macines for casting, comprising a supporting frame;

two sets of motor-driven rollers mounted on said frame for receiving respective tools or boxes of cores and enabling subsequent expulsion of said tools or boxes of cores, said supporting frame being provided with wheels which are adapted to run on rails positioned on the ground;
a reduction motor secured to the frame and transmitting movement to shafts of said wheels to move said carriage;
said carriage including two opoerative sectors each including an additional reduction motor positioned to said frame and adapted to drive a corresponding set of said rollers, and an intermediate shaft operatively interconnected between a corresponding additional reduction motor and a corresponding set of rollers to transmit movement from said additional reduction motor to said corresponding set of rollers, each operative sector further including an ancillary handling mechanism for the tools or boxes of cores, each handling mechanism being supported on said frame and adapted to open said tools or boxes of cores received by said rollers and after opening to place them in a suitable position for periodic cleaning.

Dependencies are inferred from the claim text.