2results about How to "Improve core making efficiency" patented technology

The present application relates to the technical field of metal casting, and particularly discloses a core making machine, which is provided with at least two regulating systems in the circumferential direction of the side wall of a core box. During sand shooting, the exhaust adjusting branch of the regulating system controls the exhaust amount during sand shooting to avoid excessive pressure drop loss, and the negative pressure adjusting branch adjusts the vacuum degree in the cavity to increase the pressure difference between the region and other regions, improve the flowability of the sand, and facilitate compacting of the sand, thereby achieving good core making effect. During solidification and blowing, the blowing mechanism can blow triethylamine gas into the cavity through the top and side of the core box, achieve the best solidification and air intake combination, increase the air intake area, shorten the solidification time, improve the solidification efficiency, and increase the opening of the exhaust adjusting branch to increase the exhaust amount of the corresponding region and ensure smooth air intake. The present application also provides a sand shooting and solidification process control method applied to the core making machine.

The utility model discloses a kind of excavator support sand core based on coated sand shell process, it is related to pouring sand core technical field, the excavator support sand core based on coated sand shell process includes: the upper piece is the groove shape structure of one side opening, the upper piece is equipped with multiple upper sink grooves along extension direction, the upper piece is further equipped with multiple exhaust holes, multiple exhaust holes are set on the top surface of upper piece;The lower piece is the groove type structure of one side opening, the lower piece is connected with the upper piece along vertical direction, the lower piece is further provided with lower sink groove, the axis of multiple lower sink grooves and the axis of multiple upper sink grooves are collinear;Lifting appliance, the number of lifting appliance is multiple, multiple lifting appliances are respectively along the axis of upper sink groove and are set in upper piece and lower piece, and the upper piece is fixedly connected with lower piece by lifting appliance.The utility model is based on coated sand shell process, by being equipped with upper piece, lower piece is combined to obtain sand core main body, and the fixed connection and hoisting handling of upper piece and lower piece are realized by lifting appliance, realize simple operation, high efficiency of making core, the effect of good casting performance.