Injection molding venting is a critical process step. The effective venting design ensures the surface quality of plastic parts, preventing defects such as short shots, burn marks, and gas traps, but also extends mold lifespan and enhances production efficiency.

In injection molding, the sequential timing control of hot runner systems is primarily used to precisely manage the opening/closing sequence of each parting line (or valve pin and bushing) and heating temperatures. This ensures uniform cavity filling, prevents cold slug blockages, and avoids over-packing.

During the injection molding process, gas accumulation inside the mold is one of the primary causes of product defects. If these gases cannot be promptly expelled, they can lead to quality issues such as short shots, burn marks, bubbles, and visible weld lines.

The heat treatment objectives (stress relief, pre-hardening, hardening, tempering, nitriding, etc.) and process parameters vary significantly across mold materials due to differences in chemical composition and application.

In the design and manufacturing of injection molds, locating pins (Locating Pin) are deceptively simple yet critically important precision components. Through their unique geometric structures and mechanical characteristics, locating pins plays multiple roles in mold clamping, demolding, and repetitive operations.

The core of plastic gear mold manufacturing lies in achieving ​​high precision, high wear resistance, and ease of maintenance​​.

Return pins are core functional components of the ejection system in injection molds. Their performance affects mold cycling efficiency, product demolding quality, and equipment safety.

This guide outlines critical factors for TPU injection molding, covering material properties, pretreatment, mold design, process parameters, and solutions to common defects.

A sub gate, also known as a hidden gate, refers to a gate design where the gate is cleverly positioned within the internal structure or inconspicuous areas of the product during mold design. This ensures no visible gate marks on the product surface after molding. This design not only enhances product aesthetics but also optimizes melt flow and cavity filling, meeting the demands of high-quality manufacturing.

Glass fiber-reinforced material injection molding is a process that enhances the mechanical properties (e.g., rigidity, heat resistance, wear resistance) of products by incorporating reinforcing materials like glass fibers into standard injection molding.