SONDERHOFF 3E PUR Dosing Cell
Cellular mixing and dosing machine for processing 2-component PUR systems
The standardized SONDERHOFF 3E PUR dosing cell is well suited for you if you want to use liquid, medium- to high-viscosity 2-component polyurethane foam systems with asymmetric mixing ratios for sealing your components.
You can also use the 3E PUR to process and dispense non-foamed 2-component material systems such as potting compounds and polyurethane-based adhesives very precisely.
The parts are positioned either manually in the work area of the dosing cell or on the optionally available shuttle/sliding table. For oversized parts, the two sliding tables can be connected to form a large work table.
Only the MK 825 BASIC precision mixing head is available for the 3E PUR. Its performance spectrum is designed for typical standard applications. In its mixing chamber, the two material components of the polyurethane system used are mixed dynamically and homogeneously and are precisely dosed according to the defined mixing ratio – a prerequisite for high quality polyurethane applications.
The CNC-controlled mixing head then ensures repeat-accurate and fully automatic formed-in-place (FIP) application to the part. The maximum mixing head travel range of the linear robot is 2,500 x 1,250 x 250 mm (x/y/z).
A manually operated lift door separates the machine operator from the work area of the dosing cell, which is thus CE-compliant.
An attractive entry-level price of the 3E PUR enables very short payback times, and the high degree of standardization usually shortens delivery times.
Optimized process evaluation and control
The new MK 825 BASIC mixing head used for the 3E PUR features innovative improvements. They ensure maximum process stability in the fully automatic dispensing of the 2K polyurethane systems used.
The sensors installed in the mixing head continuously supply measurement data that enable the machine operator to monitor critical process parameters of the dispensing job during production. The data also inform when preventive maintenance of wear parts becomes necessary.
The automatic logging of all system, material and process data always ensures the traceability of the production sequence at all times.
The new video for the SONDERHOFF 3E PUR dosing cell
Learn how easy it is to set-up and operate the 3E dispensing cell – place, plug & work!
The video also shows you the functionality of the dosing cell, where the machine components are located on the system and how the optionally available shuttle table can be attached to the dosing cell in self-assembly.
3E PUR Dosing Cell
The entry-level model for typical standard applications
Mixing head MK 825 BASIC
Linear Robot
Control cabinet
MP 2 mobile panel
Lifting door
Dosing components and material containers
Filling shot and rinse water tanks
Shuttle / sliding table (optional)
Optional refilling station
Mixing head MK 825 BASIC
MK 825 BASIC precision mixing head with high-pressure water rinsing
More information to our mixing head MK 825 BASICLinear Robot
The 3-axis linear robot ensures repeatable (±0.5 mm) guidance of the mixing head over the component being processed.
Control cabinet
The control electronics, servo and safety engineering, and the modular B & R branded "IPC control system" are installed in an air-conditioned switch cabinet.
More information to the control cabinet of the 3E PURMP 2 mobile panel
The multi-functional MP 2 Mobile Panel with touchscreen (10.1” WXGA TFT) for programming and operating the dosing machine.
More information to the operating panel of the 3E PURLifting door
Lifting door with safety monitoring for manual closing and opening of the mixing head travel area in the dosing cell ensures the CE conformity of the dosing system.
Dosing components and material containers
At the front left side are e.g. the precision gear pump, the high-pressure water unit for mixing head rinsing, and the material pressure tank for the A and B components.
More information to our dosing components and material containersFilling shot and rinse water tanks
At the front right side is the opening for removing the filling shot and rinse water tanks.
Shuttle / sliding table (optional)
Shuttle / sliding table (optional) with alternately operated manual mounting plates
More information to the shuttle table of the 3E PUROptional refilling station
The dosing cell 3E PUR can optionally be equipped with a refill station for automatic material supply.
More information to our refilling stations
The compact class for 3E applications
Place, plug & work!
Once the 3E PUR is removed from its transport container, production can start without much preparation. As soon as power, water and compressed air are connected and the two material components of the chosen 2K PUR system are filled into and prepared in the separate material pressure tanks, production can begin. With the 3E PUR, even small and medium quantities can be produced very economically.
The dosing machine is equipped with a manually operated lifting door. Accordingly, the machine is CE-compliant, so that no additional safety fences or light barriers are required. This boosts efficiency, saving space and costs.
With the dosing cell SONDERHOFF 3E PUR (Economic, Efficient & Ecological), you can get to work right away:
Place, plug & work!
MK 825 BASIC
2-component mixing head with high-pressure water rinsing and dynamic mixing
In the SONDERHOFF 3E PUR dosing cell, the MK 825 BASIC precision mixing head for 2 components with high-pressure water rinsing is used for mixing chamber cleaning. In the mixing head, the components are mixed dynamically and homogeneously and the material system is dosed onto the paart in precise quantities.
The MK 825 BASIC enables dosing from 0.2 to 3.0 g/s with infinitely adjustable, asymmetrical mixing ratios from 10 : 1 to 1 : 2 and a dosing accuracy of ±1 %.
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Direct stack injection of the components
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Electronically adjustable stirrer speed
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Special stirrer design enables gentle material mixing
- Blast air needle seat valve for drying the mixing system
- Low-drip and low-maintenance nozzle closing system STOP-DROP DVS 3
- Stroke adjustment can be easily adjusted by means of an adjusting wheel
- Material pressure measurement at the dosing valve
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2-component mixing head with high-pressure water rinsing and dynamic mixing of liquid to high-viscosity polymer reaction materials for sealing foaming, bonding and potting
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High-pressure water rinsing for ecological cleaning of the mixing chamber
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Alternative: rinsing with A-component
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Hydromechanically controlled precision valves for precise dosing
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Weight-reduced modular design, blue-gray anodized finish
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Robust and maintenance-free design made of high-strength aluminum alloy and chrome steel
The MK 825 BASIC is precisely guided within the travel range of 2,500 x 1,250 x 250 mm (x/y/z) by a 3-axis linear robot integrated in the cell.
The linear robot with toothed belt drive is characterized by good stiffness. This allows the mixing head to be guided over the part being processed with very high repeatability.
TECHNICAL DATA |
MK 825 BASIC |
| Dimensions (H x W x D) mixing head |
248 x 237 x 151 mm |
| Working pressure |
to approx. 20 bar |
| Discharge capacity |
0.2 to 3.0 g/s |
| Dosing accuracy |
±1 % |
| Mixing head weight |
approx. 5.5 kg |
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Mixing ratio |
from 10 : 1 to 1 : 2 infinitely variable |
| Selectable stirrer speed | from 1 to 4.500 U/min infinitely variable |
| Viscosity processing range |
Component A: 1.000 - 100.000 mPas (*); Component B: 200 - 1.000 mPas (*) |
* Depending on the mixing ratios, material viscosities and the selection of pumps, hoses and mixing elements.
Part handling and lift door operation
The machine operator places one or more parts on the prepared workpiece holder(s) within the working area of the dosing cell. He then closes the lifting door with a hand lever at the front of the machine. The fully automatic application of material to the part can start. For this purpose, the CNC-controlled MK 825 BASIC precision mixing head moves over the part contour.
To remove one or more parts after the dispensing process, the machine operator opens the lifting door using either the hand strap mounted there or the lever.
Dosing machine components and material pressure tanks
In the SONDERHOFF 3E PUR dosing cell, the dosing machine components are mounted on the side of the cell. This is where e.g. the precision gear pumps, compressed air connection and dryer, and the maintenance unit and high-pressure water unit for ecological mixing head cleaning are located. The double-walled material pressure tanks in the optimized sizes for the asymmetrical mixing ratios of the A and B components of the 2K polyurethane systems are also installed here.
The material pressure tanks are equipped with various sensors, indicating whether the pressure tank is empty or needs to be refilled. For the material pressure tanks, an extension with a refilling station for automating the material supply is possible on request. For that case there is an overfilling protection mechanism on the pressure tanks.
At a glance:
Compressed air connection, dryer and maintenance unit
Agitator for homogenization of the material component A
Overfilling protection for the use of an optional refilling station
High-pressure water unit for effective and ecological mixing head rinsing
Capacitive sensors for filling level regulation
Material pressure tank with optimized dimensions for asymmetrical mixing ratios
Material pressure tank with optimized dimensions for asymmetrical mixing rat
Plate gap filter for the material component B
Precision gear pumps with flow rate 0.75 ccm/rev (material component A) and 0.3 ccm/rev (material component B)
Compressed air connection, dryer and maintenance unit
Agitator for homogenization of the material component A
Overfilling protection for the use of an optional refilling station
High-pressure water unit for effective and ecological mixing head rinsing
Capacitive sensors for filling level regulation
Material pressure tank with optimized dimensions for asymmetrical mixing ratios
Material pressure tank with optimized dimensions for asymmetrical mixing rat
Plate gap filter for the material component B
Precision gear pumps with flow rate 0.75 ccm/rev (material component A) and 0.3 ccm/rev (material component B)
Material preparation for the 3E PUR:
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Material pressure tank with fill-level sensors, safety pressure valve (TÜV type-tested), overfilling protection and shut-off ball valve, with compressed air fittings and compressed air reducing valves for pre-pressure regulation of the tank pressures
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44 l material pressure tank, double-walled, chrome-nickel steel for material component A
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24 l material pressure tank, double-walled, chrome-nickel steel for material component B
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Optional: material supply through refilling stations (except the drum pumping station FPS) for containers from 20 to 1,000 liters
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Wire mesh filter cartridges and plate gap filters
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Three-phase agitator running at 99 rpm for tank A
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Automatic air loading
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Precision gear pumps: delivery rate 0.75 ccm/rev (material component A) and 0.3 ccm/rev (material component B)
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Hose package: material component A: fabric-reinforced polyamide high-pressure hose, material component B: steel-reinforced Teflon high-pressure hose, recirculation hose package
The different components of the dosing cell 3E PUR
Control Cabinet
The control cabinet is the expandable future-proof control center of the SONDERHOFF 3E PUR dosing cell with DM 50x technology. It includes the electrical distribution as well as the control and safety technology for the dosing machine and the CNC control of the 3-axis linear robot installed in the cell.
MP 2 Multi-functional Mobile Panel
The SONDERHOFF 3E PUR dosing cell is designed to enable the operator to perform a wide variety of tasks easily and safely. The system is operated via the easy-to-use, multi-functional MP 2 mobile panel with integrated 10.1“ touchscreen. This makes the contour programming of parts significantly simpler.
Optional shuttle / Sliding Table
The SONDERHOFF 3E PUR dosing cell offers an attachable shuttle/sliding table with manually shifting mounting plates as an alternative option for placement and processing of industrial parts for sealing, bonding, or potting. With this solution, a machine operator loads the two mounting plates with the parts in an alternating sequence.
Optional Automatic Refilling Stations
The 3E PUR dosing cell can optionally be equipped with a refilling station for automatic material supply. This ensures material-specific preparation, homogeneous consistency, and a continuous supply of materials to the material pressure tanks of the mixing and dosing system – without exposure to or contamination of the products to be filled.
Technical Service
The productivity of a machine is largely determined by its reliable availability. That's why we ensure that downtimes caused by faults and maintenance-related production interruptions are intelligently minimized.
Our service package includes the interplay of proactive in-house service, for example through risk analyses, as well as experienced, competent on-site service and responsive online service, keyword: Remote Collaboration. With this, we support you in the safe planning and execution of your production processes as well as predictive maintenance.
