Plastic-coated rotor two-color injection mold

Abstract

The invention discloses a two-color injection mold for a plastic-coated rotor with high yield and good precision, which comprises a bottom plate, which is sequentially provided with a group of shim irons, a lower mounting plate, an upper mounting plate, a lower template, an upper template, and inside the upper mounting plate There is a support plate for the activity, a lower mold core in the lower template, a lower mold core fixedly connected with the support plate in the lower mold core, an auxiliary push plate in the middle of the lower installation plate, and a driving pusher in the lower installation plate. A mechanism for the auxiliary push plate to move in the vertical direction. The auxiliary push plate is fixed with a base, and the base is provided with a number of interval forming blocks on the bottom surface of the interval column in the forming workpiece, and the middle forming core is vertically fixed on the lower mounting plate. Rod, the bottom of the upper template is provided with an upper mold core, the upper mold core is provided with a side forming part forming the outer side of the spacer column, the upper mold core and the lower mold core are provided with a lower mold core sleeve, and the upper mounting plate is under the support plate A vertical spring installation groove is provided, and a spring pushing against the support plate is arranged in the spring installation groove, and a return lever is vertically fixed on the support plate.

Description

technical field [0001] The invention relates to a hot runner injection mold, in particular to a double-color injection mold for a plastic-coated rotor. Background technique [0002] The rotor of the motor includes an inner iron core and an outer iron core. There are several plastic spacing columns between the inner iron core and the outer iron core. noise in the process. In the traditional rotor injection molding process, two sets of molds are used. First, the injection molding process is completed in the first set of molds, and then the workpiece is transferred to the second set of molds to complete the end surface rubber injection process. This processing method has low processing accuracy. Second, in order to avoid flashing and burrs, the cavity of the second set of molds needs to have a very high degree of fit with the workpiece, but this often causes the workpiece to be compressed, causing micro cracks to appear in the injection molding part, resulting in the scrapping...

AI Technical Summary

Problems solved by technology

In the traditional rotor injection molding process, two sets of molds are used. First, the injection molding process is completed in the first set of molds, and then the workpiece is transferred to the second set of molds to complete the end surface rubber injection process. This processing method has low processing accuracy. Second, in order to avoid flashing and burrs, the cavity of the second set of molds needs to have a very high fit with the workpiece, but this often causes the workpiece to be under pressure, causing micro cracks to appear in the injection molding part, resulting in the scrapping of the workpiece

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