Servo-Hydraulic Multi-Cavity Molding Machine

Ningbo Yalishi(Arlex) Plastic Machinery Co., Ltd. is one of the leading manufacturers and suppliers of servo-hydraulic multi-cavity molding machine in China. Please feel free to wholesale advanced servo-hydraulic multi-cavity molding machine made in China here from our factory.

The Servo-Hydraulic Multi-Cavity Molding Machine combines fast-response servo motor drives with optimized hydraulic oil distribution to deliver uniform clamp force, repetitive injection volume control, and continuous resin plasticizing for multi-cavity tooling operations.

Servo Motor: Permanent magnet synchronous drive adjusts pump rotational speed based on real-time system torque demand, eliminating power bypass during cooling phases.

Hydraulic System: Integrated manifold blocks reduce piping length and flow resistance, maintaining fluid turbulence at lower levels during continuous cycling.

Closed-Loop Control: Pressure sensors and optical encoders continuously feed system signals back to the main controller to compensate for fluid thermal expansion.

Pressure Control: Proportional pressure regulation holds dynamic line pressure variations within ±0.5 bar to limit parting line flash across mold cavities.

Speed Control: Variable displacement control executes pre-set acceleration and deceleration curves to reduce hydraulic pressure spikes.

Response and Stability: System drive acceleration reaches target operating pressure in 50 ms while holding oil circuit temperature under 45°C under continuous load.

Clamping Force: Five-point twin-toggle mechanical structure transfers clamping load evenly across the platen area to reduce center deflection.

Platen Structure: Cast iron box platens dimensioned via Finite Element Analysis maintain structural rigidity under maximum tonnage.

Tie-Bar Spacing: Extended distance between tie-bars accommodates wide-body multi-cavity mold bases and auxiliary core-pulling fluid lines.

Mold Height: Motorized die-height adjustment uses synchronized ring gears to maintain platen alignment during mold setup routines.

Mold Installation: Standardized T-slots and mounting hole patterns simplify mold alignment and support standard quick-change systems.

Clamping Stability: Precision platen guide tracks support moving platen weight, maintaining parallel movement within 0.05 mm across the entire stroke.

Injection Speed: Managed oil delivery speed supports controlled melt front advancement in multi-cavity filling without localized gate freeze.

Injection Pressure: Multi-stage pressure delivery achieves up to 2200 bar to pack tight-tolerance mold cavities along extended runner systems.

Injection Stroke: Optical linear transducers track screw position with 0.1 mm resolution for consistent volume delivery per cycle.

Screw Diameter: Bimetallic screws in application-specific geometries manage shear heat and melt uniformity across specified resin grades.

Injection Weight: Measured shot-to-shot weight variation stays below 0.2% over consecutive production cycles.

Plasticizing Capability: Continuous hydraulic motor torque maintains screw rotation speed during cooling cycles.

Injection Pressure and Speed Control: Controller executes 10-stage velocity curves and 5-stage holding pressure steps per program settings.

Multi-Stage Injection: Position, pressure, or time-based V/P switchover points control cavity fill transitions and limit mechanical stress.

Temperature Control: Multi-zone PID heating modules maintain barrel temperatures within ±1°C using solid-state relays.

Back-Pressure Control: Digital back-pressure adjustments maintain uniform melt density and evacuate entrained gas during screw recovery.

Repeatability: High-speed signal processors sample machine feedback every millisecond to enforce cycle consistency.

Threaded Closures & Lids: Suitable for high-cavity molds requiring consistent holding pressure to maintain thread geometry.

Thin-Wall Packaging Containers: Applied in high-velocity fill setups requiring precise V/P switchover control.

Automotive Fasteners & Clips: Used for multi-cavity molds requiring stable ejector force and core-pulling synchronization.

Electrical Terminal Blocks: Suitable for small-shot multi-cavity tooling demanding precise injection stroke repeatability.

Industrial Pipe Fittings: Applied in heavy-wall multi-cavity setups requiring extended holding pressure stability

This configuration can be applied across selected general-purpose injection molding machines: 90T / 120T / 140T / 158T / 178T / 218T / 278T / 318T / 358T / 408T / 478T / 568T / 658T / 788T / 988T / 1180T / 1380T / 1680T

Quality Verification Standards

• Platen Parallelism Testing: Laser measurements verify platen alignment under zero load and full clamping force before factory release.
• Pressure Retention Monitoring: Static pressure hold tests confirm zero internal valve bypass across hydraulic manifold circuits.
• Thermal Inspection: Infrared thermography tracks heat distribution in hydraulic lines and electrical control enclosures under continuous operation.
• Kinematic Dry Run: Continuous 100,000-cycle dry run testing verifies mechanical movement stability prior to shipment.
• Shot Weight Sampling: Part weight sampling across test molds verifies standard deviation limits over consecutive production cycles.

Technical Support Capabilities

• Tooling Compatibility Review: Verification of platen dimensions, ejector pin layouts, and core-pull interfaces relative to required tonnage.
• Process Parameter Guidance: Technical assistance in setting baseline pressure, speed, and barrel temperature profiles.
• Spare Parts Availability: Supply of replacement hydraulic seals, position transducers, heating bands, and electronic control boards.
• Commissioning Documentation: Factory Acceptance Test records and installation setup diagrams provided upon delivery.

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