Lost Foam Mold for Motor Housing with Insert Quick Change Structure

Abstract

The invention belongs to the technical field of lost foam molds, and provides a motor-shell lost foam mold with an insert rapid-replacement structure. The motor-shell lost foam mold with the insert rapid-replacement structure comprises an upper mold body (12), a middle air chamber and a lower mold body (16). The middle air chamber comprises a middle air frame (14), a middle-air-frame sealing plate (15) and rapid-replacement movable blocks (9). The four rapid-replacement movable blocks (9) are located in the middle air frame (14) and move inwards to form a mold cavity in a closing mode under the effect of four air cylinders (3). The lower mold body (16) comprises a lower mold core (19), a lower-mold-core movable block (24) and a lower-mold air frame, the lower mold core (19) is a cylinder with a notch in the outer circumferential face, the lower-mold-core movable block (24) is located in the notch of the lower mold core (19), and the middle air chamber is connected with the lower mold body (16) through a spring mechanism (17). By means of the motor-shell lost foam mold, it is guaranteed that various products are produced on one mold, operation is convenient, and the foaming effect of lost foam patterns is good.

Description

technical field [0001] The invention belongs to the technical field of lost foam molds, and mainly proposes a lost foam mold of a motor casing with a quick-change structure of inserts. Background technique [0002] The difficulty of adopting the lost foam casting process for the motor shell lies in the casting of the heat sink around the motor shell (the wall thickness of the heat sink is generally 2.5-5mm, 30-60mm higher than the outer surface of the outer circle), and the same circle of the stator surface is installed in the middle. Based on the analysis of the difficulties in the lost foam casting of the motor shell above, the treatment of the uniform wall thickness of the inner shape, the design points of the lost foam mold of the motor shell are mainly reflected in the parting and processing of the cooling fins around the motor shell product , The material of the insert is selected, and the mold is pre-opened and filled. Because there are many heat sinks in the motor s...

AI Technical Summary

Problems solved by technology

Because there are many heat sinks in the motor shell, the mold inserts need to be processed by forging aluminum, which is costly, but the types of motor shells are not much different. Universal inserts can be exchanged to realize a set of molds to produce multiple products. However, due to the relatively large inserts In addition, due to the large variety of motor casings, each type of motor casing has a horizontal frame and a vertical frame, while the same type of motor casing has a horizontal frame and a vertical frame. The difference between the motor base is that the motor housing has legs and no legs, and other features are exactly the same; but in the prior art, when producing the same type of horizontal base and vertical base, it is necessary to target the same type of horizontal base The corresponding molds are made separately from the vertical machine base, which increases the production cost and the labor intensity of the workers

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