Two-platen clamping injection molding machines are the mainstream model in the injection molding industry (distinguished from three-platen machines). Their core advantages are a simple clamping mechanism, large mold opening stroke, wide mold space, and uniform clamping force distribution. They are suitable for the molding needs of most mass-produced plastic parts, especially in the production of medium and large-sized plastic parts, multi-cavity conventional parts, and precision plastic parts. Currently, over 80% of mass-production injection molding lines in the industry use a two-platen clamping structure. The following details its practical application from four aspects: core features, applicable scenarios, process advantages, and application precautions:

I. Core Structure and Clamping Principle of Two-Platen Clamping Injection Molding Machines
The clamping mechanism of a two-platen clamping machine consists of a moving platen, a fixed platen, tie rods, a clamping cylinder/servo motor a crank arm (the mainstream type is the servo crank arm). It lacks the intermediate platen (runner plate) found in three-platen machines. The clamping force is driven by the cylinder/motor to directly engage the moving platen with the fixed platen to achieve clamping. The tie rods only serve as guides and bear force.

The clamping force is evenly distributed on the platen, unlike the point contact of a three-platen machine. Key structural features: no intermediate plate, large mold opening stroke, wide adjustable range of template spacing, large mold capacity (maximum mold size), and low power transmission loss during mold locking/unlocking, resulting in higher operating efficiency.