300 Ton For Rubber Shoe Sole Making Machine

The 300 Ton is the VI-AO series vertical "all-in-out" silicone/synthetic rubber injection molding machine designed for high-precision rubber parts such as shoe soles. It features sprueless (all-in-out) injection, servo-driven control for energy savings, and an anti-collision molding system.

Key specs for the 300VI-AO: clamping force 300 Ton; injection capacity ~3000 cc; injection pressure 1800 kgf/cm²; operation table size 700 × 700 mm; minimum mold thickness 100 mm; plunger stroke 400 mm; thermo-plate distance 500–600 mm; tie-bar distance 820 × 395 mm; maximum operating pressure 20 MPa; motor power 15 hp.

It is suitable for silicone and synthetic rubbers, including NBR (nitrile butadiene rubber). It is also appropriate for a wide range of automotive, electronic, and high-/low-temperature precision rubber parts.

Yes. The 300 Ton model is specifically suitable for shoe sole production thanks to its large clamping force, sprueless all-in-out system (reducing material waste), high injection capacity, and high-precision control.

"All-in-out" sprueless injection means the system injects material directly into the cavity without a traditional runner or sprue, eliminating runner waste. Benefits include lower material loss, reduced post-processing, and cleaner production—especially valuable for expensive rubber compounds.

The VI-AO series delivers high metering precision. The specification cites measuring precision for a 1000 cc injection volume up to ±0.1 g, and overall molding accuracy is stated as 5–10 times better than conventional injection machines.

The machine uses a servo-controlled system which can save up to 40% in energy compared with conventional hydraulic-only machines by optimizing pump/motor usage and minimizing idle energy consumption.

The patented anti-collision molding system prevents mold damage that can occur from misalignment or accidental collisions by detecting abnormal conditions and stopping or correcting motion to protect the mold.

The 300VI-AO requires an electrical supply for drive and heaters; approximate motor drive power is 15 hp and electric heating power is around 24 kW (varies with configuration). Exact electrical specifications and phasing should be confirmed with the factory before installation.

Cycle time depends on part size, wall thickness, material, mold design, and curing requirements. Small to medium shoe soles often range from sub-30 seconds to a few minutes. For precise production estimates, provide sample parts or part drawings so cycle time can be calculated.

For the 300 Ton model the platen/operation table is 700 × 700 mm and minimum mold thickness is 100 mm. The thermo-plate distance (500–600 mm) and tie-bar spacing (820 × 395 mm) define the maximum usable mold dimensions.

Yes. The VI-AO series includes proportional backpressure control to improve molding consistency and material homogenization during injection.

Regular maintenance includes checking hydraulic/servo systems, heaters, injection screws/plungers, mold alignment, and lubrication. The anti-collision and servo systems should be regularly inspected. Factory-recommended maintenance intervals and checks will be provided in the operation manual.

Yes. Factory or authorized service teams typically provide installation and commissioning. Operator and maintenance training can be provided—confirm scope and fees with the supplier when ordering.

Standard spare parts and technical support are normally available through the manufacturer or authorized distributors. It's recommended to order critical wear parts (seals, heaters, sensors) as spares and to confirm parts lead times and after-sales support agreements at purchase.