Molds for turbines of automotive turbochargers

Abstract

The invention relates to the technical field of molds and particularly relates to a mold for a worm wheel of an automobile worm wheel supercharger. The mold comprises a fixed mold bottom plate, a stripping plate, a fixed mold plate, a fixed mold core, line assemblies, a movable mold core, a movable mold plate, a movable mold base plate, square iron, a top needle plate, a bottom needle plate and a movable mold bottom plate, wherein the line assemblies are arranged at the peripheries of the mold cores; each line assembly comprises a line push seat, a line slide seat, a line upper insert, a line lower insert, line guide blocks, a line stopping block and an inclined guide column; each line push seat is mounted on the movable mold base plate and the upper part of the line push seat is inserted into the corresponding line slide seat; each line slide seat is provided with an inclined groove; each line lower insert is embedded into the corresponding inclined groove from the front end of each line slide seat; each line upper insert is embedded into the top surface of the corresponding line lower insert from the rear end of the corresponding line lower insert; the line guide blocks are fixedly arranged on the two sides of a corresponding slide groove; the line stopping blocks are stopped and pressed at the rear ends of the corresponding line inserts; and the inclined guide columns obliquely penetrate through the movable mold base plate from the fixed mold plate. The mold is used for forming the high-precision and high-quality worm wheel, and the dynamic balance precision of the worm wheel is improved.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a mould for a turbine of an automobile turbocharger. Background technique [0002] The turbocharger is an important part of a modern engine. Under the influence of environmental protection, energy crisis and other factors, the application of the turbocharger has developed rapidly. The turbocharger is a key part of the turbocharger. It The function is to absorb the exhaust energy of the engine, convert heat energy and pressure energy into mechanical work, drive the coaxial compressor impeller to rotate at high speed, absorb fresh air from the atmosphere, pressurize it and press it into the engine cylinder, so as to increase engine power and save energy. oil and to improve discharge purposes. [0003] figure 1 Shown is the structure of the turbine, including the hub, blades and cover. The hub in the middle is connected to the rotating shaft. A plurality of blades are evenly distri...

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Problems solved by technology

[0004] The turbine works at high temperature, and the working conditions are relatively harsh. Since it is a high-speed rotating part, it must be carefully balanced before assembly. Due to the continuous increase in engine power density, the required turbocharger speed is also corresponding The higher the speed of the turbocharger, the higher the requirements for the dynamic balance accuracy of the turbine. The blades, hub and cover of the turbine adopt an integrated structure, and the space on the turbine for dynamic balance and weight removal is limited. It is required to continuously improve the quality of the turbine and reduce the initial unbalance of the turbine as much as possible. As can be seen from the figure, the turbine has a high-precision complex surface, and it is difficult for ordinary molds to guarantee its molding size and quality.

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