GB819091A - Handling device for core shooting machines - Google Patents

Abstract

819,091. Moulding - machines. TIROLER ROHRENUND METALLWERKE A.G. March 18, 1957 [March 22, 1956], No. 8770/57. Class 83 (1). Core-box halves are each secured to holding means provided on a pivoted arm able to pivot about and slide up and down a vertical shaft, the holding means being movable relatively to each other for closing or opening the core-box. Split core-boxes 19, 20 are fixed to jaws 17, 18, which are opened and closed by a pneumatic cylinder 21 and are carried on an arm 11, 12, attached to a sleeve 9 rotatably and vertically adjustable on a stationary column 5. The coreboxes are moved from a resttable 22 to the table 2 of a core-blowing machine 1 where the cores are blown, and then moved back to the table 22, where they are hardened by CO 2 gas supplied through a head 24. Other handling devices 5<SP>1</SP>, 5<SP>11</SP>, .5<SP>111</SP>, Fig. 2, may be associated with the same core-blowing machine. In a modification, Figs. 7 and 8, the jaws 27, 28, carrying the core-box halves 19, 20 are opened and closed by a pneumatic cylinder 38. With both ends of the cylinder connected to exhaust, the core-box halves are opened slightly by springs 40, vibrators 86 on the arms being actuated at the same time to assist stripping. A spring also lifts the CO 2 nozzle 41 slightly so that the box opening is not interfered with, a mandrel 49 on the head remaining engaged with the core and, together with a mandrel 50, locating the core during the stripping. Thereafter the box is completely opened by the cylinder 38, and the CO 2 nozzle by the cylinder 43.