Constant temperature type double-station hot core box core shooting machine

Abstract

The invention discloses a constant temperature type double-station hot core box core shooting machine, and belongs to the technical field of core shooting machines. The constant temperature type double-station hot core box core shooting machine comprises a supporting frame and a sand storage box, wherein the sand storage box is installed at the top end of the supporting frame. The constant temperature type double-station hot core box core shooting machine further comprises a position transfer mechanism, lower core box assemblies, a core ejection mechanism, sand shooting mechanisms, an upper core box assembly, a connecting pipeline and a PLC control box. The position transfer mechanism is installed between the left side inner wall and the right side inner wall of the supporting frame. The two lower core box assemblies are arranged, and the core ejection mechanism is fixedly installed at the bottoms of the lower core box assemblies. The two sand shooting mechanisms are arranged and located above the lower core box assemblies. The upper core box assembly is fixedly installed at the bottom of the sand storage box, and the PLC control box is installed on one side wall of the supportingframe. The purpose that replacement of core boxes and the sand casting work can be accomplished under the condition that the whole working process does not need to be stopped is achieved, the production efficiency is improved, and utilization is more flexible; precoated sand in sand shooting assemblies is located in the environment with the constant temperature, and therefore the quality of a moldcore product is guaranteed, the manufacturing cost is low, and maintenance is convenient.

Description

technical field [0001] The invention relates to the technical field of core shooters, in particular to a thermostatic double-station hot core box core shooter. Background technique [0002] Sand mold casting is a widely used casting form, which is to use sand to make a mold. Sand mold casting needs to put the finished part model in the sand, and then fill the sand around the model to form a mold. At present, the emergence of the core shooter has replaced the manual sand stacking method, which improves the work efficiency and ensures the quality of the product after the mold is released. [0003] With the strict requirements of the market for castings, the appearance of the product is as important as the material of the product. The coated sand core or shell made by the core shooter has an incomparable improvement in smoothness and strength. The sand removal property of the coated sand, after the coated sand is sintered at high temperature, all the compounds on the surface a...

AI Technical Summary

Problems solved by technology

Waste of human resources, the degree of automation is not high, and affect the processing efficiency, and the structure is complex, maintenance is not easy

[0006] Moreover, when using a hot core box to make cores, the temperature of the hot core box is between 140 ° C and 300 ° C. When making cores, the core shooter is located above the hot core box, so the bottom of the sand shooting bucket is easy to heat up. Usually, the hot core box resin The coated sand has a high melting point and is not sensitive to the impact of the thermal radiation and heat conduction on the bottom of the sand shooting hopper, so the usual core shooting mechanism can fully meet the requirements of the application.

However, for coated sand with a low melting point and wet sand prepared with water-based inorganic binders, the heat radiation or heat conduction at the bottom of the sand shooting bucket will significantly affect the performance of the sand, resulting in core shooting. There are many problems such as sand mouth clogging, false sand shooting, dissatisfaction with sand shooting, etc.

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