A rear-mounted height-adjustable core support

Abstract

The invention relates to a core support for sand mold casting, which is used for a rear-mounted height-adjustable core support in sand mold casting. It includes a first support seat, a second support seat and a connecting adjustment screw. It is disassembled and connected with the first support seat and the second support seat, and the first support seat and the second support seat move inward or outward at the same time by rotating the connection adjustment screw to achieve the function of height adjustment. Fully realize the stable support of the core support for the mold / core where it needs to be supported, the operation is simple, and the leak-proof performance of the casting is further improved; it does not cause damage to the surface coating of the core and itself; the component design of the support seat and the adjusting screw is added. In addition to its height adjustment function, making adjustment screws with several standard heights can realize the application of any wall thickness in a wide range and reduce production costs.

Description

technical field [0001] The invention relates to a core support for sand mold casting, in particular to a post-mounted core support with adjustable height used in sand mold casting. Background technique [0002] In the casting production process, the core support mainly plays the role of supporting the sand core or part of the metal components of the mold when the mold is assembled. When the sand core cannot maintain its correct position through its own structure and positioning during the pouring process, use a core support with a certain thickness, shape and surface treatment to maintain the correct position of the sand core in the cavity. Effectively prevent the sand core from shaking due to buoyancy during the pouring process, causing choking fire, floating core and skin penetration and other casting defects. [0003] Before the molten metal is solidified, the core support is required to have sufficient strength, and must not be melted prematurely to lose its supporting ...

AI Technical Summary

Problems solved by technology

However, for some sand cores that need to be provided with core supports on the side, they need to be supported after the core assembly is completed. Because the actual wall thickness often deviates from the theory, the theoretical height of the core support is usually slightly larger or smaller, and the actual production Smaller core supports are often used, and the rivets on one side are bent and smashed into the cores on both sides. Using this method, a casting needs core supports of various sizes, which not only has a great impact on on-site production organization and cost control Large, and the operation is complicated, it will inevitably lead to the destruction of the coating layer on the surface of the core and even the surface sand falling into the cavity when it is smashed in, and its support stability during the pouring process is also greatly reduced

[0005] At present, there is no tooling that overcomes the above defects

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