Casting mould of belt pulley with groove

Abstract

The invention discloses a casting mould of a belt pulley with a groove, comprising an upper die, a lower die, die cores, mud cores and a sprue. The casting mould is characterized in that a middle die is arranged between the upper die and the lower die; positioning connections between the upper dies and the lower die as well as between the middle die and the lower die are both realized through pins or tenons; the die cores and the mud cores are positioned in the cavities of the upper die, the lower die and the middle die; the sprue is fixed in the upper die; and the die cores are a plurality of removable middle dies cores, upper dies cores and lower die cores in a shape of a grooved belt pulley, each die core is made of a metal material, and the die cores utilize an integral structure or a split structure. The casting mould has the characteristics of simple structure, low cost, high durability of the die cores, good quality of casting pieces, high casting efficiency, wide adaptability and the like.

Description

technical field [0001] The invention relates to a casting mold, in particular to a special casting mold for a belt pulley. technical background [0002] Pulleys are mainly used for long-distance transmission of power, such as the output of diesel engine power, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, and some small horsepower motorcycle power transmission. Power transmission of presses, reducers, reducers, generators, cotton gins, agricultural machinery, etc. Pulleys belong to hub parts. Generally, for larger pulleys, the manufacturing process is casting, and the material is iron; for smaller pulleys, forging is used, and the material is steel. However, since there are deep belt grooves on the outer circumference of the pulley, whether it is casting or forging, it is generally pre-cast (forged) according to the requirements of the drawings to form a cylindrical blan...

AI Technical Summary

Problems solved by technology

But, find after the inventor's investigation and research, there are some defects in this patent, the one, when this mould-casting, every casting a pulley part must use a casting mould, if the ladle of a stove can pour 500 parts, must simultaneously so It is necessary to use 500 sets of pulleys to cast the mold, not only the durability of the mold is not high, but also the casting cost is increased and the profit is reduced; the second is that it is difficult to mold the casting after the mold is cast; the third is that the quality of the casting is not good, and it is easy to produce shrinkage cavity and Trachoma and other phenomena, so this patent has not been widely promoted and applied, and has become a technical problem in the machinery industry

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