Shut-off valve and
Mixing tube heating
To achieve a clean shut-off at the dosing end and to ensure reliable dosing regardless of ambient temperature, we have developed the shut-off valve and mixer heater.
These solutions enable accurate and cost effective dispensing while ensuring material viscosity remains constant in different environments.
4385 Shut-off valve
Prevents dripping of 2K material in the mixing tube after dosing
In cases of low- to medium-viscosity and non-thixotropic media, simply retracting the pistons is often not sufficient to prevent dripping. This is where our shut-off valve comes into play. It seals the outlet of the mixing tube using a small shut-off tap, ensuring a clean dispensing process without unwanted dripping.
The shut-off tap is controlled by a compact digital servo motor and automatically closes the mixing tube outlet as soon as dispensing is complete. Control is managed either via the Dispensmove dispensing machine or the 4480 control unit.
Since the shut-off tap is a consumable part, it is integrated into the shut-off valve and replaced together with the mixing tube.
5032 Mixing tube heater
Minimizing the impact of variable ambient temperatures
For 2K materials, we do not heat the 2K cartridges but rather target the mixing tube. This ensures that only the dispensed material is heated, preventing continuous heating of the entire material.
Some adhesives are sensitive to heat, as it affects their curing time. Prolonged heating can cause them to gradually harden.
Since the mixing tube presents a higher resistance, it is more effective to lower the viscosity by applying heat at this point. The mixing tube heater acts like a small instant heater, warming only the adhesive being dispensed.
The mixing tube heater consists of a heating element that is placed over the round mixing tube and secured with a knurled screw.
5034 Mixer heating
Tempering high-viscosity 2K media can be useful to improve flowability and achieve a clean break-off.
Heating reduces viscosity, which facilitates processing and improves dosing quality.
Temperature range: 0 – 60 °C.
Temperature sensor: PT 100 for precise measurement.
Temperature control: +/- 2 °C (accurate control of heating temperature).
Connection cable length: 140 cm.
Connection to heating control unit: 9-pin Sub-D connector.