Self-hardening sand mixing device

Abstract

The invention discloses a self-hardening sand mixing device which comprises a vertical column, a sand introducing hopper and a crossbeam. The left end of a sand mixing cylinder is fixed to a sand mixing cylinder seat provided with a cylinder seat supporting shaft; a sand mixing cylinder discharging pipe is arranged on the lower portion of the right end of the sand mixing cylinder; a crossbeam fixing seat is arranged on the end face of the right end of the sand mixing cylinder; a sand mixing screw rod shaft is arranged in a sand mixing cylinder cavity; the left end of the sand mixing screw rod shaft is connected with a sand mixing screw rod shaft driving mechanism; the right end of the sand mixing screw rod shaft is supported on the crossbeam fixing seat; and the sand mixing screw rod shaft driving mechanism is fixed to the left side of the sand mixing cylinder seat. The sand introducing hopper is supported on the upper portion of the left end of the sand mixing cylinder. The left end of the crossbeam is fixed to the sand introducing hopper, the right end of the crossbeam is fixed to the crossbeam fixing seat, and a hardener introduction mechanism and a resin introduction mechanism are arranged on the crossbeam. The self-hardening sand mixing device is characterized by further comprising a material flow adjusting control mechanism which is arranged on the crossbeam fixing seat and electrically connected with the hardener introduction mechanism and the resin introduction mechanism. The strength of molding sand meets the requirement of strength gradual decreasing from inside to outside, the cost is saved, the molding sand gas volume is reduced, and the probability of gas hole generating of a casting is reduced.

Description

technical field [0001] The invention belongs to the technical field of casting molding equipment, and in particular relates to a self-hardening sand mixing device. Background technique [0002] The aforementioned self-setting sand mixing device is called a sand mixer, which is used to mix the liquid resin as a binder and the liquid curing agent as a reaction accelerator with the sand material as an aggregate to form molding sand, and directly introduce the molding sand into the sand. Box forming boxes are used for molding cores, which are widely used in the manufacture of castings such as glass moulds. [0003] In the published Chinese patent literature, various technical information about self-setting sand mixing devices can be seen, typically such as the "sand mixing auger for resin self-setting sand equipment" recommended by document A).CN201530049U. The positive significance of this patent lies in; Set the curing agent nozzle at the curing agent injection port and the r...

AI Technical Summary

Problems solved by technology

Thereby it is shown that there is a great irrationality or blindness in adopting a single strength, that is, the same strength molding sand method in the prior art, and the result is a waste of curing agent and resin

In addition, because the price of curing agent and resin is much more expensive than that of sand material, which leads to an increase in molding cost; and because the larger the amount of curing agent and resin is, the greater the amount of gas generated in the molding sand, so the casting even produces pores. The higher the probability, the more difficult it is to reuse the molding sand and the greater the impact on the environment

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