What is Draft Angle Injection Molding ?
The draft angle in injection molding refers to the angle between the vertical surfaces of the mold and the direction of mold opening. This angle is crucial for the success of injection molding as it affects the ability to smoothly eject the product from the mold. Here are some key points about draft angles in injection molding:
Purpose:
The presence of draft angles allows the mold to smoothly eject the molded part during opening, preventing damage to the product or mold.
It helps reduce friction between the product and mold surface, minimizing the risk of sticking or tearing.
Design Principles:
Typically, the draft angle should range from 1° to 3°, depending on the geometry of the product, material, and specific requirements of the injection molding process.
Larger draft angles facilitate easier ejection from the mold but may increase the dimensions of the molded part.
Designing draft angles for injection molding requires consideration of specific product requirements and mold design to ensure optimal molding effects and product quality.
Impact:
Insufficient draft angles in product design may lead to the product getting stuck or damaged during ejection from the mold.
Larger draft angles can reduce mold wear and help extend the mold’s lifespan.
Application:
When designing products for injection molding, engineers typically consider draft angles to ensure smooth ejection from the mold.
The size and location of draft angles are usually considered during product design and accurately implemented in mold design.
Therefore, the draft angle in injection molding is an important design consideration that directly impacts production efficiency and quality. By correctly designing and implementing draft angles, smooth injection molding processes and high-quality molded products can be ensured.
