Car Back Fender 

Surface Finishing of Back Fender– Polish / Texture

We use 600# sandpaper or similar particle-size abrasive tools to finely grind the product’s surface to remove surface roughness and imperfections, achieve a smooth and even finish, and enhance the gloss and finish of the exterior of the rear splash guard. After completing the polishing, we then texture the product to enhance the visual appeal and decorative effect of the back fender.

Parting Line Design of Back Fender

When designing the product DFM, our designers take into consideration the mold formability, demolding shrinkage and deformation, structural strength, design style as well as the subsequent processing and assembly to ensure the molding quality and production efficiency of the product. Below red is the back fender parting line.

Draft Angle Analysis of Back Fender

Draft angle analysis is a critical step in the design of plastic products to determine if the product geometry is suitable enough for mold making so that the molded part can be smoothly removed during demolding.

Sub-Insert Design of Back Fender

Sub-Insert is a key component of a mold, used to form the interior or sidewall structure of a product. It is usually used to manufacture products with complex shapes, such as automotive parts, appliance housings, etc.. The design of the sub-insert has a direct impact on the molding quality and productivity of the product. The red line is the insert line.

Ejector Design of Back Fender

The pink Ø8 ejector pin is an 8 mm diameter ejector pin that is typically used for the demolding process of smaller cavities in injection molds. The red Ø10 ejector pin is a 10 mm diameter ejector pin, which is used for the demolding of larger cavities in injection molds. These two ejector pins are used in different parts of a precision mold to ensure a smooth and efficient demolding process.

Gate Type & Location & Size of Back Fender

The mold configuration combines 1X YUDO hot runner nozzles with cold runner systems and tunnel gates, optimizing the plastic molding process for higher productivity and consistent quality. The YUDO hot runner nozzle uses advanced heating control to maintain a stable temperature for the molten plastic, enhancing the product’s appearance and dimensional accuracy. The cold runner system efficiently delivers the material to the cavity, minimizing waste and accommodating various plastics and complex geometries. Tunnel gates enable trace-free injection, reducing the need for post-molding surface treatments and streamlining production. This setup delivers a reliable, high-performance solution for injection molding.

Reasonable mold layout design needs to take into account factors such as the injection molding machine, mold, cooling system, operating space and molded product removal to ensure the efficient operation of the production process and the quality of the final product.

Before delivery, we will fully maintain and clean the molds to make sure the surface of the molds are smooth and internal impurities. Then anti-shock material and protective padding are packed and put into wooden crates and labeled with model and quantity information.