CN-121993756-A - Color mixing prevention car lamp structure assembly

CN121993756ACN 121993756 ACN121993756 ACN 121993756ACN-121993756-A

Abstract

The invention discloses a color mixing prevention car lamp structure component which comprises a second color visible appearance part, a second color non-appearance part, a bending joint part, a first color injection molding area A, a first color injection molding area B, an opponent piece and an injection molding pouring gate, wherein the first color injection molding area A is provided with a window position, the injection molding pouring gate of a second color sizing material is arranged right above the window position, and the second color non-appearance part is provided with a step. A window position is arranged at the lower part of an injection gate, a die is opposite to the injection gate during injection of the second color sizing material, the impact force is removed by the die, the second color sizing material contacts the die first, a freezing layer can be formed rapidly, and the phenomenon that a first color injection region is fused under the gate due to high temperature and high speed is avoided; by adopting the multi-step design, if the injection molding areas with different colors are subjected to the impact melting, a frozen layer is formed and intercepted by the steps when the color mixture contacts the step surface of the die, so that the color mixture problem is remained in the non-appearance area, the color mixture problem of the two-color/multi-color car light mask product is fully solved, and the attractiveness and the light transmittance of the transparent area are not influenced.

Inventors

YANG ZHIHUI
LIAO RUIHAO
HUANG CHENGTIAN

Assignees

广州导新模具注塑有限公司

Dates

Publication Date: 20260508
Application Date: 20260212

Claims (8)

1. The color mixing prevention car lamp structure assembly is characterized by comprising a second color visible appearance part, a second color non-appearance part, a bending joint part, a first color injection molding area A, a first color injection molding area B, an opponent piece and an injection molding sprue, wherein two ends of the bending joint part are respectively jointed with the second color visible appearance part and the second color non-appearance part, the first color injection molding area A is arranged at the lower part of the second color non-appearance part, a window position is arranged in the middle of the first color injection molding area A, and the injection molding sprue is arranged right above the window position and is used for injection molding; The part of the second color non-appearance part, which is close to the bending joint part, is continuously provided with a first glue blocking step and a second glue blocking step which are used for blocking dark color plastic from flowing to the second color visible appearance part, and the opponent part covers the upper part of the second color non-appearance part.
2. The color mixing prevention car light structure assembly according to claim 1, wherein the plastic color of the second color visible appearance part and the second color non-appearance part is transparent, and the plastic color of the first color injection molding A area and the first color injection molding B area is non-transparent.
3. The color mixing prevention lamp structure assembly according to claim 2, wherein the first glue blocking step and the second glue blocking step are positioned between the bending joint part and the first color injection molding A area.
4. The color mixing prevention lamp structure assembly of claim 1 wherein the thickness of the second color non-appearance portion is greater than the thickness of the second color visible appearance portion and the bent engagement portion.
5. The color mixing prevention lamp structure assembly of claim 4, wherein a third glue blocking step is further arranged on a portion of the second color non-appearance portion, which is close to the bending joint portion.
6. The color mixing prevention lamp structure assembly of claim 5, wherein a fourth glue blocking step is further arranged on a portion of the second color non-appearance portion, which is close to the bending joint portion.
7. The color mixing prevention lamp structure assembly of claim 1 wherein the window position is one of circular, elliptical or polygonal in shape.
8. The color mixing prevention lamp structure assembly according to claim 1, wherein the first color injection molding zone B is arranged at the end part of the second color visible appearance part and below the second color visible appearance part.

Description

Color mixing prevention car lamp structure assembly Technical Field The invention relates to a color mixing prevention car lamp structure assembly technology, in particular to a color mixing prevention car lamp structure assembly. Background At present, along with the continuous improvement of living standard, the automobile also gradually becomes an indispensable trip tool in people's daily life, and the car light plays extremely critical role as the important subassembly of car. The existing color mixing prevention car lamp structure component has the following defects: The automobile lampshade is used as an appearance part, the requirements on surface light cleanliness and transparency are extremely high, but the problem of color mixing of a bicolor product during injection molding is easy to occur. The outer layer of the automobile lampshade is designed with transparent glue positions serving as a light-transmitting appearance area, and the periphery of the inner layer is designed with non-transparent glue positions serving as assembly glue positions. In conventional mold designs, the first shot is the opaque glue sites, the second shot is the transparent glue sites, and the middle transparent region is the clear appearance region. There are 2 ways in which transparent tape gates are typically designed: Firstly, the transparent glue position pouring gate is designed above the non-transparent glue position, but the problem led by the pouring gate is that the pouring gate can melt the formed non-transparent glue position in the process of filling glue stock, and the melted non-transparent glue stock is brought into a transparent appearance area, so that poor color mixing of products is caused, and the pouring gate is not accepted in an automobile lamp appearance part. Secondly, design the second and penetrate the glue inlet of transparent color at the printing opacity region and be the outward appearance face, design needle valve runner, can avoid the colour mixture problem in non-transparent position and transparent position, but transparent outward appearance face has the runner vestige, influences whole pleasing to the eye, and the runner probably influences optical properties because of local stress and runner printer. However, the current development trend of automobile lamps is to eliminate lamp covers with visible pouring gates, which is not consistent with the development trend of automobile lamps. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides a color mixing prevention car lamp structural component, which solves the related problems of visible pouring gates and poor color mixing of a multi-color car lamp mask. The first aspect of the invention provides a color mixing prevention car lamp structure assembly, which comprises a second color visible appearance part, a second color non-appearance part, a bending joint part, a first color injection molding area A, a first color injection molding area B, an opponent piece and an injection molding pouring gate, wherein two ends of the bending joint part are respectively jointed with the second color visible appearance part and the second color non-appearance part, the first color injection molding area A is arranged at the lower part of the second color non-appearance part, a window position is arranged in the middle of the first color injection molding area A, the injection molding pouring gate is arranged right above the window position and is used for injection molding, a first glue blocking step and a second glue blocking step which are used for blocking dark color plastic from flowing to the second color visible appearance part are continuously arranged at the part of the second color non-appearance part, and the opponent piece covers the upper part of the second color non-appearance part. In a first aspect of the present invention, as a preferred embodiment, the plastic color of the second color visible portion and the second color non-visible portion is transparent, and the plastic color of the first color injection molding region a and the plastic color of the first color injection molding region B are non-transparent. In the first aspect of the present invention, as a preferred embodiment, the first glue blocking step and the second glue blocking step are located between the bending joint portion and the first color injection molding a region. In the first aspect of the present invention, as a preferred embodiment, the thickness of the second color non-exterior portion is greater than the thickness of the second color visible exterior portion, the bending engagement portion. In the first aspect of the present invention, as a preferred embodiment, a portion of the second color non-appearance portion near the bending joint portion is further provided with a third glue blocking step. In the first aspect of the present invention, as a preferred embodiment, a portion of the second color non-appearance