Two Common Mistakes in injection mold Design

1. Exhaust channel design

Based on calculations and known technical requirements, designers determine the appropriate hot runner configuration, size, and specifications in accordance with the product's dimensions and design. While considerable attention is often given to the product’s appearance, the design of exhaust channels can easily be overlooked.

A well-designed exhaust system helps prevent excessive mold temperature buildup. Without it, trapped gas can lead to defects such as burn marks and short shots. Therefore, exhaust design should be carefully considered from the outset.

2. The designers do not have sa trong standard consciousness

Plastic products are used across various industries, each with different precision requirements. When designing an injection mold, clients often have specific needs regarding mold dimensions and finish. As a result, designers must work meticulously and pay close attention to accuracy.

Longer mold design cycles increase tooling costs, which in turn raise expenses for the mold maker. If the client's accuracy requirements are low, designers can adopt a more flexible approach during the design stage. This improves design efficiency, reduces costs, and ultimately enhances the company's overall profitability.

3. Improper Cooling System Design

In plastic mold design, the cooling system is often overlooked due to a focus on compact structure or excessive attention to the cavity. Unreasonable cooling circuit layout, uneven channel spacing, or insufficient coolant flow rate can disrupt the thermal balance of the mold, leading to localized overheating or inadequate cooling. This directly affects the product cooling rate, resulting in extended molding cycles, warpage, or internal stress concentration. Therefore, the cooling system must be treated as a critical element from the initial design stage, involving simulation analysis and optimization to ensure uniform and efficient cooling. This helps achieve stable cycle times and consistent product quality.

In plastic mold design, exhaust channel design, and designers' awareness of standards are two critical yet easily overlooked issues. Proper exhaust design prevents mold overheating and product defects, while a clear sense of standards helps control costs and improve efficiency while meeting client requirements. Designs should be adjusted flexibly according to actual needs, thereby enhancing corporate profitability without compromising quality.