A core box with baffles for engine cooling water jacket

Abstract

The invention relates to a core box used for manufacturing an engine cooling water jacket and having separation blades. The core box comprises an upper core box, wherein guide columns are arranged at four corners of the lower end face of the upper core box; sand spraying barrels are uniformly distributed on the upper core box; the upper end faces of the sand spraying barrels are lower than the upper end face of the upper core body; rubber sleeves are arranged at the lower ends of the sand spraying barrels; the separation blades with the diameters the same as those of the upper end faces of the sand spraying barrels are stuck on the upper ends of the sand spraying barrels; four strip-shaped holes which are separated at intervals of 45 degrees are uniformly arranged on the separation blades; the upper end faces of the separation blades are leveled with the upper end face of the upper core box. Aiming at the condition that the sand spraying barrels are easy to block by core sand in the prior art, the elastic separation blades with the *-shaped strip-shaped holes are used as a method for preventing the core sand from leaking, and the sand spraying barrels and the upper core box under the sand spraying barrels are prevented form being blocked by the core sand; obstacles are removed so that the core sand can be rapidly punched into the upper core box through the sand spraying barrels, and furthermore, the combining strength and the bonding density of a mold core are improved; the mold filling force is improved, a sand hole in the mold core is reduced and the loss of an air source is reduced.

Description

technical field [0001] The invention relates to the technical field of processing equipment for water jackets, in particular to a core box with baffles for making engine cooling water jackets. Background technique [0002] Water jacket (Water Jackets) refers to the space between the inner shell of the cylinder block and the cylinder head, in which the coolant circulates to cool down the cylinder block and the cylinder head. [0003] The water jacket has dense cavities, complex structure, many parts have small cross-sectional areas, and is difficult to process. The corresponding sand core has a complex structure and is difficult to form, and has high requirements on the bonding performance of the sand core. In order to improve the strength of the sand core and prevent sand The core molding quality is not high enough to cause aluminum water to break through the sand core during casting. When using a sand shooting machine for sand shooting, it is necessary to have enough impact...

AI Technical Summary

Problems solved by technology

[0003] The water jacket has dense cavities, complex structure, many parts have small cross-sectional areas, and is difficult to process. The corresponding sand core has a complex structure and is difficult to form, and has high requirements on the bonding performance of the sand core. In order to improve the strength of the sand core and prevent sand The core molding quality is not high enough to cause aluminum water to break through the sand core during casting. When using a sand shooting machine for sand shooting, it is necessary to have enough impact force to form the sand core in an instant to ensure a strong bond between the sand cores. However, during the docking process between the sand shooting machine and the core box, core sand often flows into the core box independently, causing blockage at the entrance of the core box, affecting the rapid sand shooting of the sand shooting machine, and thus easily reducing the combination of cores strength

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