Expandable polystyrene secondary foaming molding die for LED lampshade

Abstract

The invention discloses an expandable polystyrene secondary foaming molding die for an LED lampshade. An upper die frame (1) is provided with a feeding pipe (3), and the feeding pipe (3) penetrates the upper die frame (1) and an upper die plate (6) to be communicated with a cavity (7). A discharging opening in the bottom end of the feeding pipe (3) is located in the top face of the cavity (7). A first cooling system is further arranged on the upper die frame (1). A second cooling system is arranged on a lower die frame (15). A first steam heating system is arranged in the upper die frame (1). A second steam heating system is arranged in the lower die frame (15). The lower die frame (15) and a lower die plate (8) are further provided with an ejection mechanism which is driven by an air cylinder and used for ejecting the molded LED lampshade. Due to the fact that the cooling systems and the heating systems are arranged on the molding die, the upper die frame and the lower die frame can be cooled and heated rapidly; and furthermore, the die structure is simple through the air pressure ejection mechanism.

Description

technical field [0001] The invention relates to the technical field of foam molding molds, in particular to an expandable polystyrene secondary foam molding mold for LED lampshades. Background technique [0002] LED light is a solid-state semiconductor device that can convert electrical energy into visible light, and it can directly convert electricity into light. The heart of the LED is a semiconductor wafer. The semiconductor wafer is composed of two parts, one is a P-type semiconductor, and the other is an N-type semiconductor. When the current acts on the wafer through a wire, electrons will be pushed to the P area. In the P region, electrons recombine with holes, and then energy will be emitted in the form of photons, which is the principle of LED light emission. The LED lampshade is a kind of LED accessories, which is to better gather the light, make the light more concentrated and softer, and avoid direct glare from the LED light. The main function of the milky whit...

AI Technical Summary

Problems solved by technology

[0004] 1) The mold structure lacks a cooling structure, and cooling cannot be achieved quickly;

[0005] 2) There is a lack of heating system in the mold structure, which cannot quickly realize heating;

[0006] 3) There is generally an ejector mechanism in the form of ejector rods in the mold structure, which includes multiple ejector rods, a mechanism for driving the ejector rods, and a reset mechanism for resetting the ejector rods. Therefore, the entire mold structure will become complicated, and at the same time its The demoulding stability and reliability are poor, resulting in low demoulding efficiency;

[0007] 4) The mold is made of ordinary alloy steel, although the thermal strength and wear resistance are good, but for the foam material of the LED lampshade, its fatigue resistance is poor and it lacks toughness

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