1000 Ton Injection Molding Machine

The 1000-ton hydraulic injection molding machine provides heavy-duty clamping force for large-scale industrial and automotive component manufacturing. Built for high-rigidity molding requirements, this machine handles deep-draw parts, thick-walled products, and multi-cavity structural components weighing up to 5,500 grams per shot.

It integrates a high-response servo-hydraulic system, heavy-duty platen design, and a multi-stage injection controller. This configuration minimizes platen deflection under maximum clamping pressure, ensuring tight dimensional tolerances across large surface areas.

Box-Type Platen Design: Finite Element Analysis (FEA) optimized ductile iron platens evenly distribute clamping force across the mold face, reducing flash formation and mold wear.
Five-Point Twin-Toggle Clamping Mechanism: Delivers fast mold movement cycles with mechanical locking rigidity at peak tonnage.
Variable-Frequency Servo Drive System: Matches hydraulic output directly to machine phase requirements, reducing energy consumption by 30% to 50% compared to fixed-displacement pumps.
Hardened Nitrided Screw & Barrel: Bimetallic treatment extends wear resistance when processing glass-fiber reinforced polymers (up to 30% GF).
Multi-Zone PID Temperature Control: Ceramic heating bands maintain barrel zone accuracy within +/-1 degree C.
Linear Guide Rails on Injection Unit: Reduces friction during carriage movement, improving injection repeatability and nozzle alignment precision.

The machine operates on a hydro-mechanical clamping cycle paired with a reciprocating screw injection unit:
Mold Closure & Locking: The servo motor drives a high-pressure gear pump to actuate the double-toggle mechanism. The toggles extend to lock the movable platen against the tie bars, generating 1,000 tons of mechanical clamping force.
Plasticization & Metering: The hydraulic motor rotates the screw to convey, melt, and shear raw polymer granules through the heated barrel. Backpressure is regulated via a proportional valve to ensure melt density uniformity.
Injection & Packing: Dual injection cylinders push the screw forward, driving molten plastic into the mold cavity at pressures up to 180 MPa. The controller switches from velocity to pressure control (V/P switchover) based on position, pressure, or time.
Cooling & Mold Opening: As the part cools inside the temperature-regulated mold cavity, the screw rotates to prepare the next plastic shot. The clamping cylinder retracts the toggle system with multi-stage speed profiles to prevent part shock during ejection.
Ejection: Hydraulic core pulls retract, and the central ejector pin array pushes the finished part clear of the core side.

Platen Rigidity & Mold Protection
Platen deformation under 1,000 tons of clamping pressure causes uneven wall thickness and parting-line flash. The box-structure platen maintains center-line deflection under 0.08 mm at maximum load. Low-pressure mold protection actively monitors platen position via digital encoders; if resistance is detected within 50 mm of mold touch, clamping halts within 15 milliseconds to prevent mold damage.
Injection Repeatability
The injection unit utilizes closed-loop proportional valve feedback for injection speed and pressure control. Screw position sensing via optical linear scales delivers shot-size precision within +/-0.1 mm, ensuring part weight variation remains below 0.25% across continuous 24-hour production runs.
Hydraulic System Stability
A bypass off-line oil filtration unit maintains hydraulic fluid cleanliness to NAS Class 8 standards. The water-cooled oil heat exchanger keeps operating oil temperatures between 35 degrees C and 50 degrees C, preserving seal integrity and preventing valve sticking during ambient summer spikes up to 45 degrees C.

This machine processes commodity, engineering, and reinforced thermoplastic resins:
Polypropylene (PP) & Polyethylene (HDPE/LDPE): Optimized for large packaging, crates, and thin-wall structural parts.
Acrylonitrile Butadiene Styrene (ABS) & PC/ABS Blends: Used for automotive interior trim and appliance housings requiring high surface finish quality.
Polyamide (PA6 / PA66 with up to 35% Glass Fiber): Requires the optional bimetallic barrel screw set to resist abrasive wear during technical component production.
Unplasticized Polyvinyl Chloride (U-PVC): Requires custom hard-chrome plated screw geometry and dedicated barrel fan cooling for thermal stability.

Screw Geometry Options
Standard A-Screw (105 mm): Higher injection pressure (up to 195 MPa); recommended for thin-wall molding or hard-to-flow resins (PC, PA).
Standard B-Screw (115 mm): Balanced pressure and volume ratio; suitable for general automotive and industrial parts.
Standard C-Screw (125 mm): Maximum shot volume (up to 5,500 g); ideal for polyolefin (PP/PE) thick-walled parts where lower injection pressure suffices.
Optional Modules
Hydraulic Core Pulling: Dual or quadruple directional control valves for complex molds with moving side cores.
Sequential Valve Gate (SVG) Controller: Integrated 4 to 8-zone pneumatic/hydraulic controller for hot runner systems to eliminate weld lines on large automotive parts.
Accumulator-Assisted High-Speed Injection: Nitrogen accumulators increase injection speed up to 300 mm/s for thin-wall packaging applications.
Bimetallic Alloy Barrel & Screw: Tungsten carbide coating for processing recycled resins or high-percentage mineral/glass fills.

Machining Precision: Platen surfaces are milled on 5-axis CNC machining centers to ensure parallel accuracy within 0.05 mm per meter.
Tie Bar Treatment: Structural tie bars are forged from 40Cr steel, quenched and tempered, then chrome-plated to a surface hardness of HRC 55-60.
Ultrasound & Magnetic Inspection: All cast platens undergo ultrasonic flaw detection to ensure zero internal voids or casting cracks before machining.
Factory Acceptance Testing (FAT): Each unit undergoes a 24-hour dry-run cycle test followed by a full-load pressure holding test at 100% rated tonnage prior to shipment.

Machine configurations are customizable to integrate into automated workcells:
Robot Interface: Standardized Euromap 67 or Euromap 12 connectors for top-entry or side-entry part removal robots.
Specialized Cylinder Units: Tailored L/D ratios (up to 24:1) for specialty color blending or direct compounding.
Extended Daylight & Stroke: Custom frame extensions for deep-draw molds requiring extra opening stroke.

To receive an accurate technical proposal and commercial quote, provide the following specifications:
Part Drawings / Dimensions: 3D CAD files (.STEP / .IGS) or 2D drawings indicating part dimensions, wall thickness, and projected surface area.
Resin Type & Grade: Polymer material grade, melt flow index (MFI), and percentage of filler material (e.g., glass fiber, talc, recycled content).
Production Cycle Requirements: Target cycle time and daily output volume requirements.
Existing Mold Parameters: Outer mold dimensions (L x W x H), minimum/maximum mold height, hot runner valve gate requirements, and core pull requirements.
Factory Infrastructure: Local power supply voltage (e.g., 400V/50Hz/3Phase or 480V/60Hz/3Phase) and available cooling water capacity.

Hot Tags: 1000 ton injection molding machine, China 1000 ton injection molding machine manufacturers, suppliers, factory