Product Descriptions
General Overview - Positioning of the BOY 2C M System
The BOY 2C M is an independent second injection unit developed by Dr. BOY for multi-component (2K) injection applications requiring high shot volumes. Compared to the BOY 2C XS and 2C S models, it offers significantly higher plasticizing capacity and increased injection performance.
This system enables the addition of a second injection process without mechanical modification of the main injection molding machine. As a result, existing production infrastructure is preserved while enabling hard-soft combinations, functional overmolding, and advanced technical 2K parts.
Independent Hydraulic Drive and Control Architecture
The BOY 2C M injection unit is equipped with its own fully independent hydraulic drive and control system. This architecture ensures:
- No impact on the performance of the main injection molding machine
- Independent process parameters for the second component
- Synchronized and stable operation throughout the injection cycle
The drive unit and control panel are positioned next to the main machine. Thanks to its fixed caster design, the BOY 2C M can be easily moved and connected to different BOY injection molding machines or even machines from other manufacturers.
Flexible Positioning Options and Efficient Use of Space
The BOY 2C M can be installed in various configurations depending on the application:
- Vertical or inclined top mounting on horizontal machines
- Horizontal positioning next to the mold (L-position)
- Compact layouts for space-saving production cells
This flexibility allows the second component to be injected from the most suitable location, especially in large and complex molds. The open-nozzle plasticizing unit is connected to the injection unit via adjustable high-pressure hoses with lengths of 6 m or 10 m, providing maximum freedom in mold design and machine layout.
Plasticizing Unit - SP 215 Technical Capacity
The BOY 2C M is equipped with the SP 215 plasticizing unit for processing thermoplastic materials. This unit ensures stable melt quality and high injection performance for large second-component applications.
SP 215 plasticizing unit technical data:
Screw diameters:
- 28 mm
- 32 mm
- 38 mm
Screw L/D ratios:
- 22.7 / 20 / 16.7
Maximum theoretical stroke volume:
- 76.9 cm³
- 100.5 cm³
- 141.8 cm³
Maximum theoretical shot weight (PS):
- 70.0 g
- 91.4 g
- 129.0 g
Injection force:
- 172 kN
Theoretical injection rate:
- 84.0 g/s
- 110.0 g/s
- 155.0 g/s
Maximum specific injection pressure:
- 2800 bar
- 2143 bar
- 1520 bar
Maximum screw stroke:
- 125 mm
Nozzle contact force:
- 31 kN
Nozzle retraction stroke:
- 215 mm
Screw torque:
- 280 Nm (162 cm³ - 130 bar)
- 350 Nm (204 cm³ - 130 bar)
Screw speed:
- 410 rpm (162 cm³)
- 325 rpm (204 cm³)
Screw recovery force:
- 29.7 kN
Heating power (nozzle + barrel):
- 8430 W
These values allow stable and repeatable processing of high-viscosity or high-volume second components.
Control System - Procan ALPHA Integration
The BOY 2C M is equipped with Dr. BOY's advanced Procan ALPHA control system. The TFT display of the second injection unit can be positioned next to the main machine's operator panel using a 10 m connection cable.
Control capabilities include:
- 8-stage injection speed control
- 8-stage holding pressure control
- Injection start based on pressure, stroke, or time
- Closed-loop injection and back-pressure control
- Precise speed management via ramped transitions
- Cold-start protection
- Intrusion-injection control
This structure ensures that both injection units operate reliably under a single, synchronized process logic.
Energy Efficiency and Hydraulic System
The BOY 2C M features a servo motor pump-driven hydraulic system. Thanks to the electronically controlled variable-displacement pump:
- Energy is consumed only when required
- Heat generation and oil degradation are reduced
- Noise levels are significantly lowered
- Stable performance is maintained during long production runs
Hydraulic system technical data:
- Hydraulic system pressure: 180 bar
- Oil tank capacity: 70 liters
General Technical Data and Dimensions
BOY 2C M general technical data:
- Installed drive power / total installed power: 16.6 / 29.2 kW
- Footprint: 2.35 m²
- Dimensions (L × W × H): 2205 × 1067 × 1770-2050 mm
- Net weight (without oil): 1105 kg
- Gross weight (pallet / crate): 1175 / 1405 kg
These values demonstrate that the BOY 2C M delivers high capacity within a compact and efficient production footprint.
Application Areas
The BOY 2C M is widely used in the following applications:
- Hard-soft (2K) injection molded parts
- Large-volume overmolding applications
- Electrical and electronic housings
- Automotive supplier components
- Functional coating and sealing applications
- Technical and industrial multi-component parts
Conclusion - Why Choose the BOY 2C M?
The BOY 2C M multi-component injection unit offers a high-end solution for producing large and functional 2K parts, thanks to its high shot volume, powerful injection performance, independent hydraulic drive, and flexible positioning options. The ability to convert existing injection molding machines into multi-component systems optimizes investment costs while maximizing process flexibility.
For applications requiring high second-component volumes, process reliability, and long-term production stability, the BOY 2C M clearly represents Dr. BOY's engineering philosophy in the field of advanced multi-component injection molding.
