A car tail light typically contains several plastic parts, including the lens cover, housing, and sockets for the bulbs. The lens cover is usually made of a clear or colored PMMA that is designed to be durable and withstand exposure to the elements. The housing, which holds the lens cover in place, is also typically made of plastic. The sockets for the bulbs are also usually made of plastic and are designed to securely hold the bulbs in place while allowing them to be easily replaced when necessary.

 

Mould name	Tail light mould
Plastic resin	PMMA, ASA, PC
Numbers of mould cavity	L+R
Gate and runner	Cold runner or hot runner
Core and Cavity steel	2344/2738/718/P20 steel
Mould base steel	1045 steel
Injection machine specification	Depends on mould size and part weight
Mould manufacturing time	90 days for T1 mould trial
Cycle time	50-60s
Mould life	≥ 500,000 shots

 

 

Automotive tail light plastic mould design is an indispensable part of the automotive manufacturing process. It directly affects the quality and production efficiency of car lights. Therefore, the following important matters need to be paid attention to when designing the moulds:

 

1. Geometry of tail light

The tail light mould is designed to meet the required tail light geometry and size requirements. This involves the design of the internal space, external contours and curved shapes of the mould. It is necessary to ensure that the mould can accurately replicate the required taillight shape, including lenses, reflectors, frames and other components.

 

2. Material selection

Choose a material suitable for the taillight, which is usually a transparent or translucent, high-temperature-resistant plastic. The mould material should have sufficient hardness and wear resistance to ensure the long service life of the mould. Commonly used materials include mould steel,such as P20, H13, 718, 2738, 2344 etc.

 

3. Mould structure

The structure of the taillight mould should take into account the needs of injection molding. The mould should include the mold core and mold cavity, as well as the necessary cooling system and exhaust system. The mould structure should have sufficient rigidity and stability to ensure that there are no problems such as deformation or material leakage during the molding process.

 

4. Mould surface treatment

In order to ensure the smoothness and light transmittance of the tail light surface, the mould surface should be properly treated. Common treatment methods include polishing, EDM, sandblasting, etc. to eliminate defects and roughness on the mould surface.

 

5. Maintenance and maintenance

Taillight molds require regular maintenance and upkeep during use to extend the life of the mould and maintain its accuracy. This includes regular mould cleaning, lubrication of mould parts, inspection and repair of damaged parts, etc.

 

6. Quality control

During the production process, strict quality control is carried out to ensure that each tail light meets the specified requirements. This includes dimensional measurements of molds, visual inspection and functional testing of molded products, etc.

In short, when designing and manufacturing the car taillight mould, we will pay attention to matters such as geometry, material selection, mould structure, mould surface treatment, maintenance and upkeep, and quality control.

 

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