A large CNC machine tool lost foam foam model paint spraying device

Abstract

The invention relates to a coating spraying device for a lost-foam-casting foam model of a large-sized numerically-controlled machine tool. The device comprises a baseplate, a mounting rack, a placement mechanism and a spraying mechanism. The upper end of the baseplate is provided with the mounting rack, the mounting rack is provided with the spraying mechanism, and the lower end of the spraying mechanism is provided with the placement mechanism. The placement mechanism is mounted on the baseplate and comprises supporting racks, a fixing suction cup, a driven gear, a drive gear, a drive motorand an auxiliary support chain. The spraying mechanism comprises a coating box, a booster pump, a connection hose, an automatic spray gun, a connection plate and an adjustment air cylinder. Accordingto the coating spraying device, through cooperation of the placement mechanism and the spraying mechanism, the foam model is sprayed, during spraying, a coating can be continuously stirred to guarantee even distribution of the coating, the automatic spray gun can move leftwards and rightwards relative to the foam model, the spray comprehensiveness is improved, the placement mechanism can make thesurface of the foam model evenly sprayed with the coating, and the consistency of the thickness of the coating of all the parts is guaranteed.

Description

technical field [0001] The invention relates to the field of casting equipment, in particular to a large-scale numerically controlled machine tool lost foam foam model paint spraying device. Background technique [0002] Lost foam casting is to bond and combine paraffin or foam models similar in size and shape to castings to form model clusters. After brushing refractory paint and drying, they are buried in dry quartz sand for vibration modeling, and poured under negative pressure to vaporize the model. , a new casting method in which liquid metal occupies the position of the model, solidifies and cools to form a casting. [0003] Lost foam casting does not require mold taking, no parting surface, and no sand core, so the casting has no flash, burr and draft angle, and reduces the dimensional error caused by the combination of cores, so it is applied to the manufacture of precision large-scale CNC In the process of machine tools. [0004] Before casting starts, in order to...

AI Technical Summary

Problems solved by technology

[0005] (1) When using mechanical equipment for spraying, the working range of the nozzle is limited, and it is impossible to ensure that the foam model can be sprayed evenly everywhere, and the paint in the paint box will precipitate with the increase of working time, resulting in the foam model everywhere after spraying. Inconsistent fire performance;

[0006] (2) When spraying manually, it is necessary to use tools or another worker to clamp and fix the foam model, which increases the input cost, and under the uncertainty of manual operation, it is difficult to ensure the uniformity and comprehensiveness of spraying It is easy to control the uneven distribution of paint on the surface of the foam model

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