HMD 320M8-SPV High-Speed Thin-Wall Injection Molding Machine

The HMD 320M8-SPV extends the SPV5 platform into the 320-ton class, incorporating all series hallmarks: servo-hydraulic drive with high-speed hydraulic accumulators, strengthened platen with high-rigidity structure, nitride-treated links for robustness and stability, alloy metallic tie bars with enhanced strength, and self-lubrication steel and copper bushes. The parallel movement hydraulic system enables charging on fly, minimizing dry cycle time. The double rod injection cylinder and linear guide injection unit reduce friction for reliable high-speed performance. The 320T clamping force provides a meaningful step up from the 308T model, accommodating medium-sized container molds and higher-cavity-count cup lid molds where the smaller platens become limiting. This model is well-suited for manufacturers who need flexibility to run both smaller high-cavity molds and medium-sized container molds on a single machine platform.

The 3,200 kN clamping unit features a platen sized to accommodate molds for medium containers and high-cavity cup lids. The tie bar distance provides clearance for mold widths that exceed the 270-308T platforms. Mold opening stroke and maximum daylight are scaled appropriately for the deeper part geometries served by this tonnage class. Ejector force of 77 kN handles stripper plate and pin ejection systems. The strengthened platen design, a defining feature of the SPV5 series, distributes clamping force uniformly to prevent deflection across the mold surface. This is particularly important for cup lid molds where thin wall sections and snap-fit features require precise dimensional control. The toggle clamping mechanism with nitride-treated links provides consistent force application throughout millions of cycles.

The HMD 320M8-SPV employs a dual pump motor system operating at 17.5-19 MPa system pressure. The parallel movement capability allows the machine to begin plasticizing while the clamping unit is still closing, recovering valuable cycle time. The servo-hydraulic drive delivers energy savings of approximately 35 percent compared to conventional hydraulic systems. The regenerated hydraulic system minimizes overload on the mechanical structure and hydraulic motors, extending component life. Heater power is distributed across 6 independently controlled temperature zones for precise barrel temperature management. Electrical components include Omron contactors and Schneider limit switches. The INOVA controller from Italy provides 10-inch color LED display with real-time process monitoring, shot-to-shot data logging, and recipe storage for quick changeover between different mold configurations.

The 320T tonnage class represents a sweet spot where manufacturers can serve both small-part high-cavity applications and medium-container production. In the competitive landscape, Chinese mid-range machines like Haitian Mars V 320T ($50,000-70,000) offer general-purpose servo-hydraulic performance. European machines like the Engel e-mac 300T ($200,000-400,000) or Arburg Allrounder 320A ($300,000+) deliver superior precision and energy efficiency. The HWAMDA HMD 320M8-SPV ($80,000-120,000 estimated) occupies the value position with dedicated thin-wall features that generic mid-range machines lack. The SPV5's strengthened platen, high-speed accumulator system, and parallel movement hydraulics are specifically engineered for thin-wall cycling speeds that general-purpose servo machines cannot consistently achieve. The integrated turnkey supply model further differentiates HWAMDA from both budget and premium competitors.