Essence and Key Points for medical injection mould Design

Precision and meticulousness are crucial for success in the design process of medical injection moulds. The following points require special attention:

Gate Design: Should be cleverly placed in areas with thicker product walls to ensure a smooth injection process and complete filling. At the same time, the location should be concealed, not affecting the product's appearance and function, with edges or bottoms being preferred choices.

Cold Slug Management: Design cold slug wells near the gate and equip them with pullers to facilitate smooth mold release of the runner.

Multi-Point Gating Strategy: For large or flat products, adopting multi-point gating can effectively prevent warping and short shots.

Flow Path Optimization: The gate position should minimize the plastic's flow path in the mold, reducing pressure loss and facilitating mold venting.

Core Protection: Avoid placing gates next to slender cores to prevent direct impact from the plastic flow, which could cause deformation.

Gate Size Customization: Based on product characteristics (size, shape, structure, and plastic type), initially set a small gate size and adjust according to mold trial results.

Weld Line Management: Predict weld line positions through mold flow analysis, assess their impact on the product, and improve if necessary by adding cold slug wells.

Symmetric Gating Principle: For multi-cavity molds with the same product, adopt symmetric gating; when different products share a mold, prioritize placing the larger product near the main runner.