Motorcycle front shock absorber hollow aluminum cylinder sub-die-casting pouring machine

Abstract

The invention discloses a motorcycle front shock absorber hollow aluminum cylinder sub-die-casting pouring machine, which is characterized in that bottom pouring type pouring is matched with a core pulling system capable of moving up and down, so that a core rod can freely move up and down in a mold to complete core pulling and resetting operation; molten aluminum in a pressure chamber is slowly pushed through a piston of a forced filling oil cylinder capable of moving up and down, so that bottom pouring type pouring is achieved, the bottom pouring type pouring is matched with forming operation of a core rod mold, the pouring efficiency is improved, meanwhile, the yield is greatly improved, and waste of materials is reduced; semi-automatic production is controlled through a PLC program, one operator can operate 3-4 casting machines at the same time, the productivity is nearly one time higher than the current industry level, and the casting production cost is greatly reduced; an H13 mold core is embedded in a ductile iron mold frame, the mold core boundary dimension considers the occupation requirements of aluminum cylinder blank cavities of different lengths and different appearances, only the mold core needs to be detached and replaced when aluminum cylinder blanks of different models are poured, production and adjustment are convenient and fast, good economic benefits and quite remarkable technical progress are achieved, and large-scale production is facilitated.

Description

technical field [0001] The invention relates to the field of casting and forming, in particular to a sub-die-casting pouring machine for a hollow aluminum cylinder of a motorcycle front shock absorber. Background technique [0002] The aluminum cylinder is the key part of the front shock absorber of the motorcycle. It is not only the structural part of the shock absorption performance but also the main part of the safety guarantee. Its main quality requirements are that the cylinder body does not leak shock absorber oil, and the axial tensile strength and radial resistance The bending strength reaches or even exceeds the product design index. Pore defects such as air holes, slag holes, concentrated shrinkage holes and dense pinholes are not allowed in the surface polishing of the cylinder. After finishing the inner hole of the cylinder section, the surface roughness reaches Ra0. About 15, the appearance is beautiful, that is, the parting surface of the full length of the cyl...

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is to provide a sub-die-casting machine for the hollow aluminum cylinder of the front shock absorber of the motorcycle. Stability, large material loss, low production efficiency, high labor intensity, high production cost, and serious environmental pollution

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