Die casting mold for manufacturing fan blades

Abstract

The invention discloses a die casting mold for manufacturing fan blades. The die casting mold comprises a sprue gate, a fixed mold plate, a fixed mold core, a movable mold core and a movable mold plate. The fixed mold core and the movable mold core are combined with each other to form a cavity, a runner which is communicated with the cavity is arranged at the end, which corresponds to the cavity, of the sprue gate, a sprue spreader is arranged in the runner, an extrusion device is arranged between the fixed mold core and the movable mold core and comprises an extrusion pin and a cylinder, the cylinder provides extrusion power for the extrusion pin, and one end of the extrusion pin is positioned in the runner; a slider core pulling mechanism which can drive the extrusion pin to be pulled out of the runner is arranged between the fixed mold plate and the movable mold plate. The die casting mold has the advantages that after the die casting mold is closed, the fan blades can be primarily extruded by a pressure cylinder of a die casting machine, then secondary pressurization feeding and pressing compensation can be carried out by the extrusion pin on the basis of primary extrusion, accordingly, the density of the fan blades can be guaranteed, defects such as air holes, loosening and sinking can be prevented, and the forming quality of the fan blades can be effectively improved.

Description

technical field [0001] The invention relates to a die-casting mold, in particular to a die-casting mold for manufacturing wind blades. Background technique [0002] Wind blades are an important part of mechanical components such as motors, and are also one of the very important parts in the defense industry. The existing methods of processing wind blades mainly include stamping, blank CNC processing and die-casting. Among them, the die-casting method can form wind blades with more complex curved surfaces, and the forming efficiency is relatively fast, so it is widely used in the manufacturing and processing of wind blades middle. [0003] The wind blade is a slender piece, and the quality requirements are usually impact resistance, high overall density, no pores, no looseness, and no depression within the range from the end of the round handle of the wind blade wire mesh to 1 / 3 of the blade. However, the pressure of the die-casting machine to press the molten liquid into t...

AI Technical Summary

Problems solved by technology

However, the pressure of the die-casting machine to press the molten liquid into the mold cavity is not enough to ensure the quality of the wind blades. There are many defects in the formed wind blades, and it is difficult to meet the quality requirements of customers. None of the methods can meet the quality requirements of no porosity, no porosity, and no dents, and the molding quality of the wind blade castings is poor.

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