Product Descriptions
General Overview - Industrial Positioning of the BOY 25 E VV
The BOY 25 E VV is one of the most recent and optimized models in Dr. BOY's family of fixed lower platen injection molding machines, specifically developed for insert molding applications. Designed to replace the previous BOY 22 A VV model, it offers higher machine speeds, improved dynamics, and shorter dry cycle times.
The BOY 25 E VV is engineered for a wide range of applications, from manual insert placement to fully automated overmolding solutions, including robot integration and inline production cells. Thanks to the fixed lower platen concept, maximum process reliability and repeatability are ensured during insert placement.
Fixed Lower Platen Concept - Process Reliability in Insert Molding
The most distinctive technical feature of the BOY 25 E VV is its fixed lower platen design. This concept provides several critical advantages:
- Complete prevention of insert displacement during mold closing
- Safe execution of both manual and automated insert placement
- High positional accuracy of inserts during mold closing
- Minimization of scrap and quality defects
The fixed lower platen is particularly advantageous for applications involving metal inserts, electrical contacts, pins, bushings, and other precision components that are overmolded with plastic.
Clamping Unit - 250 kN Fixed Lower Platen Design
The BOY 25 E VV is equipped with a compact yet industrially robust clamping unit.
Clamping unit technical data:
- Clamping force: 250 kN
- Tie-bar spacing (horizontal × vertical): 254 × 254 mm
- Maximum daylight between platens: 400 mm
- Maximum adjustable mold opening stroke: 200 mm
- Minimum mold height: 200 mm
- Maximum mold weight on moving platen: 150 kg
- Mold opening force: 17.6 kN
- Mold closing force: 17.6 kN
- Maximum ejector stroke: 80 mm
- Ejector forward / return force: 18.1 / 12 kN
These values provide a well-balanced structure for small and medium-sized insert molds.
Injection Unit - SP 69 and SP 82 Thermoplastic Units
The BOY 25 E VV is available with different injection units and screw diameters for thermoplastic processing. This flexibility allows both micro-injection and applications requiring relatively higher shot volumes.
Injection unit options and technical data:
Available screw diameters:
- 22 mm
- 24 mm
- 28 mm
- 32 mm
Injection-related technical data (depending on screw diameter):
- Maximum theoretical stroke volume: 30.4 - 76.5 cm³
- Maximum theoretical shot weight (PS): 27.7 - 69.5 g
- Injection force: 87 kN
- Theoretical injection rate: 52.6 - 111.2 g/s
- Maximum specific injection pressure: 1,076 - 2,277 bar
- Maximum screw stroke: 80 - 95 mm
- Nozzle contact force: 24 kN
- Nozzle retraction stroke: 205 mm
- Screw torque: 180 - 290 Nm
- Screw speed: 250 - 400 rpm, continuously adjustable
- Screw recovery force: 38 kN
- Heating power (nozzle + barrel): 3,550 - 5,800 W
These parameters ensure stable melt flow even at high filling speeds and with sensitive insert geometries.
High Injection Speed and Differential Injection
Thanks to differential injection technology, the BOY 25 E VV can achieve higher injection speeds. This feature provides a significant process advantage, especially for:
- Thin-walled insert parts
- Overmolding of metal or textile inserts
- LSR and special elastomer applications
Ergonomics and Operator-Friendly Design
The machine design has been optimized with operator ergonomics in mind:
- Comfortable working height
- Short access distance to the mold area
- Reduced operator fatigue during manual insert placement
- Easy part removal and insert placement with the mold open
These characteristics make the BOY 25 E VV highly suitable for semi-automated production environments.
Automation and Integration Capability
The BOY 25 E VV offers excellent compatibility with automation systems:
- Y-table systems
- Robots and handling solutions
- Light curtain safety systems
- Open-mold part removal and insert placement
- Inline production cells
The machine frame allows space-saving mounting of peripheral equipment.
Energy Efficiency and General Technical Data
The BOY 25 E VV stands out for its low energy consumption.
General technical data:
- Installed drive power: 7.4 kW
- Total installed power: 11.0 - 13.2 kW (400 V)
- EUROMAP 6 dry cycle time: 1.75 s (178 mm stroke)
- Hydraulic system pressure: 185 / 180 bar
- Oil tank capacity: 65 liters
Machine Dimensions and Weight
The BOY 25 E VV features an extremely compact design.
Physical dimensions:
- Dimensions (L × W × H): 1,849 × 742 × 2,790 mm
- Footprint: 1.37 m²
- Net weight (without oil): 780 kg
- Gross weight: 855 - 1,100 kg
BOY 25 E VH - Alternative Configuration with Horizontal Injection
For applications where center injection is not possible or where runner marks must be minimized, the BOY 25 E VH model is available. With its horizontal injection unit:
- Injection can be performed from the parting line
- Runner marks are less visible
- The need for complex hot runner systems is reduced
- Runnerless or low-scrap production becomes possible
Application Areas
The BOY 25 E VV is widely used in the following applications:
- Technical parts with metal inserts
- Electrical and electronic contacts
- LSR overmolding applications
- Sensor and connector production
- Textile or nonwoven insert molding
- Medical and precision industrial components
Conclusion - Why Choose the BOY 25 E VV?
The BOY 25 E VV injection molding machine provides an exceptionally reliable production platform for insert and overmolding applications, thanks to its fixed lower platen concept, high injection speeds, ergonomic design, and low energy consumption. Its compact structure, automation-ready architecture, and wide range of injection unit options make it ideal for both manual and fully automated production.
For applications that demand process reliability, repeatability, and long-term production stability in insert molding, the BOY 25 E VV clearly reflects Dr. BOY's engineering philosophy in a powerful and efficient injection molding solution.
