Large injection molding is a specialized manufacturing process for producing oversized plastic parts that cannot be made on standard machines. TuohaiTech® has the capability to mold parts up to 25kg shot weight and 1,300 tons clamping force, serving industries that require large-scale plastic components.
What Defines Large Injection Molding?
Large injection molding typically involves parts and molds that exceed standard machine capabilities:
- Part Size: Components larger than 600mm in any dimension
- Part Weight: Parts weighing more than 5kg
- Clamping Force: Machines above 800 tons
- Shot Size: Injection capacity over 10kg
- Mold Size: Molds larger than 1,200mm x 1,200mm
Challenges in Large Part Molding
Large part molding presents unique challenges that require specialized expertise:
- Warpage Control: Managing differential cooling and shrinkage across large areas
- Material Flow: Ensuring complete filling of large cavities without defects
- Clamping Requirements: Preventing mold flash with adequate clamping force
- Cooling Time: Optimizing cooling channels for cycle time efficiency
- Structural Integrity: Maintaining part strength and rigidity
- Surface Quality: Achieving consistent finish across large surfaces
Our Large Molding Capabilities
TuohaiTech® is equipped to handle the most demanding large part projects:
- Machine Capacity: 800 to 1,300 tons clamping force
- Shot Weight: Up to 25kg per shot
- Platen Size: Up to 2,000mm x 1,800mm
- Mold Weight: Accommodate molds up to 15 tons
- Part Size: Produce parts up to 1,500mm in length
- Multi-Material: Co-injection and gas-assisted molding for large parts
Applications
Automotive
Large automotive components require precision and durability:
- Bumpers and bumper beams
- Dashboard panels and instrument panels
- Door panels and interior trim
- Fender flares and body panels
- Trunk lids and tailgates
- Underbody shields and splash guards
Industrial Equipment
Industrial applications demand robust large-part solutions:
- Machine housings and enclosures
- Pallets and containers for material handling
- Covers and guards for equipment safety
- Tanks and reservoirs for fluid storage
- Ductwork and ventilation components
Consumer Products
Large consumer products benefit from injection molding efficiency:
- Appliance housings (refrigerators, washing machines)
- Furniture components and seating shells
- Sports equipment and recreational products
- Toy sets and play structures
- Storage bins and organizational systems
Engineering Solutions
We employ advanced engineering techniques for large part success:
- Sequential Valve Gating: Control material flow to eliminate weld lines and reduce warpage
- Gas-Assisted Molding: Create hollow sections to reduce weight and cooling time
- Conformal Cooling: 3D-printed cooling channels for uniform temperature distribution
- Structural Foam: Produce thick sections without sink marks
- MuCell Technology: Microcellular molding for lightweight large parts
Quality Assurance
Large parts require comprehensive quality control:
- Full dimensional inspection with portable CMM arms
- 3D scanning for complete surface analysis
- Structural testing for load-bearing components
- Environmental testing for temperature and UV resistance
- Fit and function testing with mating components
- Statistical process control for production consistency
Trust TuohaiTech® for your large injection molding projects. Our experience and equipment ensure success even for the most challenging applications.