Enterprise Overview

ZHEJIANG SOUND MACHINERY MANUFACTURE CO., LTD, established in 1955, is a leading Chinese manufacturer of injection molding machines affiliated with ZHEJIANG ARTIKING GROUP CO., LTD. Recognized as a national high-tech enterprise, the company holds over 180 patents and operates advanced manufacturing bases, including the DEQING SOUND base with a 133,000 m² facility and annual capacity exceeding 6,000 machines. Their product portfolio includes diverse injection molding machine series with clamping forces from 1,000KN to 60,000KN and shot weights from 100g to 550,000g, serving over 60 countries worldwide.

Application Areas

The machines are widely used across industries such as household appliances, automotive components, deep cavity products, and logistics items like pallets.

Product Features and Advantages

• Compact Dual-Plate Design: Saves floor space and reduces investment costs compared to three-plate machines.
• Adjustable Large Mold Opening Stroke: No structural limits, customizable per process needs.
• Modular and Flexible Configuration: Mechanical, hydraulic, and electrical modules enable tailored solutions.
• Intelligent Control System: Fast response, precise control, digital analysis, and IoT factory integration support.
• High Precision: Mold open/close accuracy ±0.1mm, injection position ±0.2mm, product repeatability ≤0.5‰, suitable for robotic automation.
• Stable Clamping Unit: High rigidity and parallelism reduce deformation, extend machine/mold life, and enable energy-saving short dry cycles.
• Non-Contact Tie Bars: Frictionless design reduces energy use and protects molds while maintaining cleanliness.
• Injection Unit: Single-cylinder, compact, low inertia, high precision with European screw technology and stable temperature control.
• Control System: Austria KEBA system specialized for dual-plate machines, ensuring stable, reliable, and user-friendly operation.
• Hydraulic Mold Unit: Proportional valve control with independent cooling and filtration for stable oil temperature and safety.

Technical Specifications and Configurations

Clamping Units

• Clamping forces range from 4,500KN to 24,000KN across models DP450 to DP2400.
• Key parameters include tie bar spacing, mold height limits (min 350mm to max 1800mm), ejector stroke (230-450mm), ejector force (2,000-3,800kN), platen daylight (2,550-3,800mm), toggle stroke, and maximum mold weight (16-60 tons).

Injection Units

• Screw diameters vary from 80mm to 140mm with L/D ratios between 19.8 and 25.5.
• Theoretical shot volumes range from 2,262 cm³ to 45,616 cm³; shot weights from 2,081g to 41,967g.
• Injection pressures typically max at 240 bar; injection speeds around 90-110 mm/s; injection rates vary widely (528 cm³/s to over 2,800 cm³/s).
• Screw rotation speeds range from 75 to 165 rpm; plasticizing capacities from 528 cm³/s to 2,702 cm³/s.
• Heating zones usually 7 or 8; nozzle forces between 129 kN and 241 kN.
• Power requirements include pump power from 48 kW to 276.6 kW and heating power from 54 kW to 220 kW.

Machine Dimensions and Weight

• Machine sizes scale with model, e.g., DP1100 measures approximately 9.4x3.2x2.8 m, weighing 40-44 tons; DP2400 up to 17x4.5x4.5 m, weighing 123-129 tons.
• Oil tank capacities range from 850 L to 4,000 L.

Additional Notes

• Machine size and configuration depend on clamping and injection unit combinations; dimensions are indicative.
• Technical specifications are subject to change without notice.
• Detailed mold platen dimensions and mounting hole patterns are provided for precise mold installation.

Advanced Models and Features

Models DP2800, DP3300, and DP4000 offer clamping forces from 28,000 to 40,000 kN with corresponding injection units (SP32800 to SP92500). These machines feature:

• Injection pressures from ~1,199 to 1,876 bar and injection speeds between 50 mm/s and 87 mm/s.
• Plasticizing capacities and heating zones (8-9 zones) tailored for large-scale production.

Machine Components and Control Systems

Injection Components

• Insulated barrels with support, multi-stage speed and pressure controls, prevention of screw reversal, and back pressure control.
• Advanced features include injection position transducers, linear guides, proportional back pressure, auto purge, ceramic heaters, and high-efficiency screws.

Clamping Components

• Mold protection, auto mold height adjustment, differential mold opening, and safety interlocks (electric/hydraulic).
• Safety doors with mechanical self-locking and crashworthy switches; T-slot mold platens with Euromap interfaces for robotic integration.
• Ejector systems with multi-stage control and pull-back center pins.

Control Systems

• KEBA2000 professional controller with 12-inch display, mold data saving, multi-stage speed/pressure control, electric leakage protection, and compliance with GB safety standards.

Hydraulic Systems

• Features include oil level and temperature alarms, independent hydraulic cooling and filtration, solenoid valve LED indicators, and synchronized mold/ejector/core pulling functions.
• Optional hydraulic core pulling devices depending on model.

Additional Features and Options

• Injection parts options: bi-metal barrels, hard screws/barrels, chrome screws, special mixing screws, and self-locked nozzles.
• Sequential injection with multiple channels (6-24), pneumatic sequential injection with accumulator, and mold cavity pressure holding without sensors.
• Accessories: stainless steel hoppers, hopper dryers, autoloaders, feeding plates, mold cooling quick joints, hydraulic core pulling overlays.
• Clamping options: hot runner controls (8-24 channels), core pulling overlays, air blast systems, ejector check valves, magnetic mold platens, hydraulic clamping boards.
• Control upgrades: KEBA 8000/5000 controllers, larger displays (15" and 21"), multiple Euromap interfaces for robots and mold devices.
• Safety and monitoring: mold protection imaging, heating short circuit detection, electric box air conditioning, LED lighting, UPS for controllers, CE and SPI safety compliance.

Summary of Critical Parameters and Best Practices

• Machine size and performance depend on clamping and injection unit combinations; parameters are indicative.
• Multi-stage control of injection speed, pressure, and back pressure is essential for molding precision and screw protection.
• Safety interlocks and monitoring systems ensure operator safety and machine reliability.
• Hydraulic and electric synchronization enhances mold operation efficiency and reduces cycle times.
• Advanced control systems and interfaces facilitate automation and robotic integration.
• Regular monitoring of hydraulic oil levels, temperature, and filter status is recommended for system health.

Note: All technical data are subject to change without prior notice by Sound Machinery.