Continuous automatic pug mixer

Abstract

The invention provides a continuous automatic sand mixing machine, comprising a sand mixing packing auger, a dry sand bin and an enclosed resin quantitative device; the material inlet of the sand mixing packing auger is connected with the lower mouth of the dry sand bin; the lower mouth of the dry sand bin is provided with a proportion control valve and a sand adding valve; the material outlet ofthe sand mixing packing auger is provided with a funnel; the shell of the sand mixing packing anger is provided with a resin feeding valve; the enclosed resin quantitative device is connected with theresin feeding valve on the sand mixing packing auger by a delivery pipe; the sand adding valve and the resin feeding valve are connected with the same electromagnetic control valve. The sand adding valve and the resin feeding valve are controlled by the same electromagnetic control valve, thus ensuring the synchronous adding of the dry sand and the resin and ensuring the normal proportion and thestrength of sand core. The adopted enclosed resin quantitative device has an anti-oxidation function and can ensure that the resin flux is stable, the quantification is exact and the material inlet of the resin is not blocked.

Description

technical field [0001] The invention relates to a sand mixer in the casting production process, and belongs to the technical field of sand mixers in foundry machinery. Background technique [0002] In the whole process of casting production, the production of sand core is an important link. The sand core must not only have sufficient strength, accurate size, and clear outline, but also have good collapsibility. The equipment required for the whole process includes a sand mixer, a core shooter and a triethylamine gas generator. The sand mixer mixes two components of phenolic resin and polyisocyanate resin and sand into core sand according to the ratio. And add the prepared core sand into the shooting cavity of the core shooting machine. The performance of these equipment is directly related to the production quality and efficiency of castings. The main problems of sand mixers currently used in foundry production are that the resin feeding quantity is unstable, the resin out...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the sand mixer in the existing casting production process, and provides a continuous automatic sand mixer with stable feeding amount and capable of ensuring the quality of core sand

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