Injection Molding Machine Installation: 7 Key Considerations for a Stable Foundation

Proper installation is the first critical step to ensuring the long-term performance, accuracy, and reliability of an injection molding machine. A poorly installed machine can lead to premature wear, part quality issues, and even safety hazards. To avoid these problems, follow these seven fundamental principles during installation.

Level Ground and Adequate Load-Bearing Capacity

The machine must be installed on a perfectly level floor with a foundation capable of supporting its significant weight. This is especially crucial for large-tonnage machines. For example, for a machine with an injection volume over 8000cm³, the foundation's load-bearing capacity should meet minimum requirements such as:

Clamping Unit Area: ≥ 6.7 t/m²

Injection Unit Area: ≥ 6.0 t/m²

Hydraulic Tank Area: ≥ 3.0 t/m²

Allow Ample Space for Operation and Maintenance

Don't just consider the machine's footprint. Ensure sufficient clearance from walls for operator access, material handling, and—importantly—for future maintenance and part disassembly. Also, verify that the ceiling height allows enough space for overhead crane operation to safely lift and change molds.

Secure Anchoring with Proper Foundation Bolts

The size, depth, and spacing of the anchor bolts (foundation bolts) are machine-specific and critical for stability. Always refer to the manufacturer's specifications. These bolts are what ultimately secure the massive forces generated during the molding cycle.

Plan for Utilities: Water, Air, and Power

Before final positioning, plan the routes and connection points for all necessary utilities:

Cooling Water: Ensure sufficient flow rate and pressure for mold temperature control and hydraulic cooling.

Compressed Air: Identify the supply line drop point for pneumatic functions.

Electrical: Locate the main power supply connection point and plan for control cabinet access.

Step-by-Step Mechanical Installation (For Large Machines)

For large machines where the clamp and injection units are separate, follow a structured assembly sequence:

Position the clamping unit first.

Insert anchor bolts into their foundation holes, place leveling plates and wedges underneath the unit, and then remove the transport rails.

For the injection unit, thread the anchor bolts through its base before pouring the concrete foundation.

Once the concrete has fully cured, proceed with precise leveling and alignment. Tighten all anchor nuts securely.

Ensure full contact on all mounting surfaces and secure the leveling plates/wedges to prevent any shift.

Connect Piping and Wiring After Machine is Secured

Only after the machine frame is firmly anchored should you connect the interconnecting hydraulic lines between the clamp and injection units. Follow the hydraulic layout diagram precisely. Subsequently, connect all electrical wiring per the circuit diagrams, including connections for temperature controllers and other peripherals.

Final Assembly: Install the Hopper and Feed System

The final step is to mount the feed throat (hopper assembly) to the injection barrel. This should be done after major alignment is complete to avoid damage during the earlier rigging and leveling stages.