Quick-filling, equal-area and constant-pressure runner pouring gate structure

Abstract

The invention discloses a quick-filling, equal-area and constant-pressure runner pouring gate structure. The quick-filling, equal-area and constant-pressure runner pouring gate structure comprises an LED (Light Emitting Diode) support injection mold body (4), wherein the back surface of the LED support injection mold body is provided with equal-area constant-pressure type runners (3); the front surface of the LED support injection mold body is provided with product mold cavities (1); the equal-area constant-pressure type runners and the product mold cavities are communicated through conical pouring gates (2); the top parts of the conical pouring gates are communicated with the center positions of the product mold cavities; the bottom parts of the conical pouring gates are communicated with the equal-area constant-pressure type runners. The quick-filling, equal-area and constant-pressure runner pouring gate structure disclosed by the invention has the beneficial effects that PPA (Phenyl-propanolamine) resin for injection molding can be directly injected into the equal-area constant-pressure type runners in the back surface of the quick-filling, equal-area and constant-pressure runner pouring gate structure and then can be injected into the product mold cavities of an LED support through conical pouring gate paths, and quickness, equal area, constant pressure and stability are realized, so that the rate of finished products of injection molding LED supports is high, the resin utilization rate is high, and the product cost per each LED support is reduced to a large extent.

Description

technical field [0001] The invention relates to an injection mold for an LED bracket, in particular to a runner gate structure in the injection mold for an LED bracket. Background technique [0002] At present, with the increasing development of the LED bracket industry, the competition is becoming more and more fierce, and the profit of the product is continuously reduced. At present, in the injection molding process of the LED bracket, due to the structural design of the lead frame is developing to multiple rows and columns, and The widening of the lead frame has limitations, which requires that more products can be packaged on the original width of the strip, and the individual spacing of the products is smaller and denser. Due to the structural design of the LED lead frame and the design of the LED bracket injection mold have gradually become bottlenecks, the design of the injection mold for the LED bracket injection mold has a single structure, and the glue is injected ...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the yield of the existing injection-molded LED bracket is low, the utilization rate of the mold and resin is low, the product cost of the unit LED bracket is high, and the flow of the plastic melt in the cavity is not balanced during the filling process, which is This provides a fast filling equal volume constant pressure runner gate structure

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