Demolding driving mechanism for casting mold

Abstract

The invention relates to a demolding driving mechanism for a casting mold. The demolding driving mechanism comprises an upper mounting plate used for positioning and dragging an upper mold, the upper mounting plate is provided with movable holes which are arranged in a long-hole-shaped mode in the internal direction and the external direction, and sliding blocks are arranged on the upper mounting plate; the demolding driving mechanism further comprises driving rods for connecting side molds, the top end of each driving rod is connected with the corresponding sliding block to form a crank arm assembly, the driving rods penetrate through the upper movable holes to extend downwards to enable the bottom ends of the driving rods to be connected with the side molds, and one crank arm assembly is used in each movable hole in a matched mode; guide portions are arranged on the upper mounting plate, each guide portion is provided with an inclined plane which inclines outwards and upwards, and each sliding block is provided with a sliding plane matched with the corresponding inclined plane and arranged on the inclined plane; the demolding driving mechanism further comprises a pushing plate located on the sliding blocks, and the pushing plate can vertically and perpendicularly push the sliding blocks. In this way, the demolding driving mechanism and the mold are connected into a whole to form a two-dimensional demolding device, and separation among the upper mold, the side molds and a casting is achieved.

Description

technical field [0001] The invention relates to a machine for casting metal castings, in particular to a demoulding driving mechanism for casting molds in the machine for casting metal castings. Background technique [0002] When casting barrel-shaped parts with complex side shapes such as automobile hubs, the casting mold used generally includes upper and lower molds arranged above and below, and side molds arranged on the periphery of the upper and lower molds. Since the casting is relatively large, the mold for casting is very large and heavy, and the pressure required for casting is involved. Generally, the structure of the casting mold for the casting of an automobile hub is relatively complicated, and in order to be able to drive the side mold, upper mold, etc. The movement of the mold or the lower mold completes the opening and closing action of the mold such as the side mold, and a drive cylinder is specially arranged on the left and right spaces of each side mold to...

AI Technical Summary

Problems solved by technology

However, during the demoulding process, due to the uneven force on the ejector pins 12 or the sticky metal solution on the ejector pins 12, the ejector pins 12 are very prone to adverse phenomena such as being stuck, broken and bent. Downtime for repairing seriously delays the production schedule, and also increases the maintenance cost and production cost of the mold

In addition, because the upper mold 1 is provided with an avoidance through hole for avoiding the ejector pin 12, this will cause the casting a to form a front at the position of the avoidance through hole and affect the quality of the casting a. quality; secondly, the ejector pin 12 will easily lead to deformation or fission of the pressed part of the casting a, directly causing the casting a to be scrapped

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