Product Descriptions
General Overview - Industrial Positioning of the BOY 35 E VV
The BOY 35 E VV is an advanced injection molding machine positioned in the small to medium tonnage segment of Dr. BOY's insert molding machine portfolio. It combines high precision, high speed, and process reliability in a compact and efficient design. The basic machine concept is largely derived from the horizontal BOY 35 E model; however, by rotating the injection and clamping unit by 90 degrees into a vertical configuration, it is specifically optimized for insert molding applications.
Thanks to its fixed lower platen design, insert components remain securely positioned during mold closing. This feature significantly enhances process safety in both manual and fully automated insert placement operations.
Fixed Lower Platen Concept - Stability and Repeatability in Insert Molding
The defining characteristic of the BOY 35 E VV is its fixed lower platen, which provides critical advantages in insert molding processes:
- Secure positioning of inserts during mold closing
- Precise placement of metal, plastic, textile, or electronic inserts
- Minimization of internal stresses and positional deviations within the molded part
- Reduced scrap rates and stable part quality
When combined with automation in serial production, this design ensures high repeatability from cycle to cycle.
Clamping Unit - 350 kN Four Tie-Bar Design
The BOY 35 E VV is equipped with a classic four tie-bar Dr. BOY clamping unit. Despite its compact dimensions, this structure offers industrial-grade rigidity and supports a wide range of mold configurations.
Clamping unit technical data:
- Clamping force: 350 kN
- Tie-bar spacing (horizontal × vertical): 280 × 254 mm
- Maximum daylight between platens: 500 mm
- Maximum adjustable mold opening stroke: 300 mm
- Minimum mold height: 200 mm
- Maximum mold weight on moving platen: 220 kg
- Mold opening force: 29.5 kN
- Mold closing force: 21.4 kN
- Maximum ejector stroke: 80 mm (optional 130 mm or 150 mm)
- Ejector forward / return force:
- 23.8 / 15.8 kN
- Optional: 49.9 / 35.0 kN
These values provide sufficient rigidity and stability for insert molds and multi-component tooling.
Injection Unit - SP 96 Thermoplastic Injection Platform
The BOY 35 E VV is supplied with the SP 96 standard injection unit for thermoplastic processing. Multiple screw diameters allow the machine to cover a broad range of part sizes and materials.
Available screw diameters:
- 24 mm
- 28 mm
- 32 mm
Injection unit technical data:
- Screw L/D ratios: 22 / 18.6 / 16.3
- Maximum theoretical stroke volume: 43 / 58.5 / 76.5 cm³
- Maximum theoretical shot weight (PS): 39.1 / 53.2 / 69.5 g
- Injection force: 101 kN
- Theoretical injection rate: 68.7 / 93.5 / 122.2 g/s
- Maximum specific injection pressure: 2231 / 1639 / 1255 bar
- Maximum screw stroke: 95 mm
- Nozzle contact force: 48 kN
- Nozzle retraction stroke: 205 mm
- Screw torque: 180 / 290 Nm
- Screw speed: 10-250 / 10-400 rpm, continuously adjustable
- Screw recovery force: 44 kN
- Heating power (nozzle + barrel): 5800 W
- Material hopper capacity: 20 liters
These parameters ensure stable melt flow in thin-walled insert parts and applications requiring high filling speeds.
High-Speed Injection and Differential Injection Option
When combined with injection units 16 and 45, the BOY 35 E VV supports high-speed injection functionality. This capability offers significant process advantages, particularly for:
- Thin-walled parts
- Technical components with metal inserts
- LSR and elastomer overmolding
- MIM and hotmelt applications
BOY 35 E VH - Injection from the Parting Line
The BOY 35 E VH is an alternative version of the BOY 35 E VV that combines a vertical clamping unit with a horizontally oriented injection unit. This configuration allows injection directly from the parting line.
Advantages of this design include:
- No visible injection marks on decorative surfaces
- Reduced need for complex and costly hot runner systems
- Runnerless or low-scrap production
- Simplified mold design
Automation and Integration Capability
The BOY 35 E VV provides extensive options for automation integration:
- Y-table systems
- Robot and handling solutions
- Light curtain safety systems
- Automation mounted directly on the machine table
- Direct mounting of 2K injection units on the machine table
The open table design allows easy integration of peripheral equipment.
Control System and Process Management
The BOY 35 E VV is equipped with Procan ALPHA control technology, offering:
- 8-stage injection speed control
- 8-stage holding pressure control
- Closed-loop injection and back-pressure control
- PID-controlled heating zones
- Comprehensive production and process monitoring functions
This control architecture ensures a high level of process stability and repeatability.
Energy Efficiency and General Technical Data
The BOY 35 E VV delivers energy-efficient production thanks to its compact hydraulic design and integrated oil tank.
General technical data:
- Installed drive power: 7.4 kW
- Total installed power: 13.2 kW (400 V)
- EUROMAP 6 dry cycle time: 1.5 s (196 mm stroke)
- Hydraulic system pressure: 210 bar
- Oil tank capacity: 65 liters
Machine Dimensions and Weight
The BOY 35 E VV offers a compact footprint within its class.
Physical dimensions:
- Dimensions (L × W × H): 2047 × 815 × 2835 mm
- Footprint: 1.67 m²
- Net weight (without oil): 1420 kg
- Gross weight: 1495 - 1740 kg
Application Areas
The BOY 35 E VV is widely used in the following applications:
- Technical parts with metal inserts
- Electrical and electronic components
- LSR and elastomer overmolding
- MIM and powder injection processes
- Hotmelt and special bonding applications
- Multi-component injection molding
Conclusion - Why Choose the BOY 35 E VV?
The BOY 35 E VV injection molding machine delivers high process reliability for insert and overmolding applications through its fixed lower platen concept, high injection speeds, broad automation compatibility, and versatile material processing capabilities. Its compact design, powerful injection unit, and flexible configuration options make it suitable for both manual and fully automated production.
For applications requiring precision, repeatability, and long-term production stability in insert molding, the BOY 35 E VV clearly reflects Dr. BOY's engineering philosophy in a robust and efficient injection molding platform.
