OEM Lighting Mould High Quality LED Lighting Lamp Outer Cover

Description

PC cover of the LED lighting lamp

LED lighting outer cover PC cover injection molding processing technology and application

1. Product Overview
The PC cover product is the outer cover of a unit light on an LED lighting lamp. LED lighting consists of three groups (or five groups of small unit lights, choose according to your needs.

The PC cover of the LED lighting cover is made of engineering plastic polycarbonate. It is an integral part of the appearance of the entire lighting product. The thickness is 2mm, and the light transmittance cannot be less than 88}. It can be used outdoors for 30,000 hours (nearly three years). The light transmittance after half field cannot be less than 85), and it has good temperature resistance (-40~1000C), acid resistance and weather resistance. It won’t turn yellow after 30,000 hours outdoors. There should be no shrinkage, air marks or silver threads on the product surface. Defects such as blooming, halos, vibration lines and deformations are very demanding.

2. Material selection
The PC cover of the outer cover of the LED lighting lamp is made of transparent polycarbonate PC material.

3Equipment selection

The injection mold has a central side door for the material.
The calculation formula of clamping force is:
F0≥F=P module A minute Xl 00
Rated clamping force of fuel injection machine
P mold—average pressure in the mold (average melt pressure in the cavity MPa)
Point: The sum of the projected areas of the injection molded product, slides and gates
F-The force generated by the injection pressure in the cavity (N)

According to the average pressure in the medium-viscosity plastic mold and the accuracy of the product required by the P mold, the average pressure is 34.3 (MPa). The size of the injection molded product in the average pressure test of the mold is (80% of the length is 27.36 (MPa) point A = (projected area of product * 2) + projected area of gate, runner, etc. = (256 * 2) + 65 = 577 (cm2)

F=P mold A points*100=27.36(MPa)X577(cm2)X*100=1578672(N)=1578(kN)

4 process design

4.1 Drying of raw materials
PC will absorb a certain amount of moisture at room temperature. If used directly for molding, the quality of the product will be seriously affected. Therefore, drying is required before PC injection molding.