silcomix: LSR dosing system
Extremely precise and efficient dosing of LSR in injection moulding processes
The silcomix is a compact-designed, electrically driven piston pump metering and mixing system. It is used for continuous processing of medium to high-viscosity silicone-based media with a mixing ratio of 100:100. Metering is carried out directly from the original containers with a size of 20 or 200 l.
Features and benefits
- High energy efficiency through servo-electrically driven piston pumps
- Extremely low material waste through simultaneous drum drainage and use of special supply pumps (material residual quantity in drum < 1 %)
- User-friendly system operation thanks to 7” touch panel
- Precise adherence to mixing ratio through synchronous switching of piston pumps (SWIPSYNC)
- Compact, space-saving system design
- Compatible with pallet trucks and forklifts
- Extremely good control behavior; even small shot sizes are possible in optimal quality
- Flexible operation thanks to processing from 20 or 200l containers (on a chassis)
- Process reliability thanks to data monitoring and archiving
- Processing of abrasive media for pigment metering through special sealing technology
New mixing unit
DOPAG has developed a new mixing unit for the LSR pump silcomix. The new design is unique on the market and simplifies the operation, while ensuring shorter setup times and greater system availability.
Technical specifications
| Outflow rate | up to 1.2 or 3.6 l/min (at max. 20 or 12 double strokes per minute and at MR 100:100, depending on viscosity) | ||
| Mixing ratio | 100:100 (further ratios available on request) | ||
| Colour injection metering | up to 4 colours with a ratio of 0.2 - 5% each | ||
| Maximum working pressure | 250 bar | ||
| Material supply | 20 or 200 l | ||
| Viscosity | up to 1,000,000 mPa s (higher viscosity available on request) | ||
| Operating voltage | 400/230 VAC 3/N/PE/50/60 Hz | 480 VAC 3/PE 50/60 Hz | 200 VAC 3/PE 50/60 Hz |
| Dimensions (D x W x H), Lifter retracted | 960 x 1,320 x 1,920 mm |
SWIPSYNC
The servo-electrical drive enables synchronous switching of the piston metering pumps, regardless of the current position of the respective pump piston (switching point synchronization). This prevents deviations from the mixing ratio due to different switching points. The demand-based, automated adaptation of the volume flows of individual components by means of the lifting speed of the piston metering pumps ensures uniform drum drainage of the A and B components. The collapse in pressure flow, and thus also volume flow, is considerably reduced through a special control of the servo drives, with the time also significantly shortened.
