Method for expanding use of middle die device of copper rotor die-casting die

Abstract

The invention relates to a method for expanding the use of a middle die device of a copper rotor die-casting die and belongs to the technical field of die-casting dies. The middle die device is the middle die device of a conventional copper rotor die-casting die. According to the method, different upper cushion blocks (2), supporting columns (6) and lower cushion blocks (8) are replaced to adjust the total length, wherein the upper cushion block (2) and the lower cushion block (8) are processed to be as long as each other, or to be composed of two or more cushion blocks; the cushion blocks are the same or different in thickness, and the thickness can be decided according to the change of the product length; each part is formed and fixed by use of the overall dimension or by use of a positioning pin. The method is simple and convenient to operate; the repeated machining of the middle die is avoided; the free change of different iron core lengths of the same product can be realized; the die machining cost can be greatly reduced; the inventory pressure is reduced.

Description

Technical field: [0001] The invention relates to a method for expanding the use of a middle mold device of a copper rotor die-casting mold, which belongs to the technical field of die-casting molds. Background technique: [0002] The conventional rotor die-casting mold structure consists of a movable template, a fixed template, a movable mold insert, a middle mold insert for placing the rotor iron core steel sheet, and a static mold insert, wherein the middle mold insert for placing the rotor iron core steel sheet follows the The length of the rotor core varies. For the rotor of the same frame size, the size of the copper rings on both sides is fixed, and the length varies with the frame size or the number of poles. At present, the middle mold insert adopts the structure of upper and lower halves, and the length changes with the length of the product, which requires new processing, that is, a set of iron core length to process a set of middle mold inserts, such as the 145 fr...

AI Technical Summary

Problems solved by technology

In addition, because the middle mold insert is not in contact with the molten metal, its life is much longer than the life of the mold that is in contact with the molten metal, resulting in the processing of multiple lengths of the middle mold insert increasing the pressure on the mold inventory, resulting in a backlog of funds

For these reasons, the cost of manufacturing cast copper rotors increases

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