Sequential curing across three joints doesn’t just cost time — it introduces a dose gap between the first bond cured and the last. The Incure LLG-3P-3 removes both problems by curing all three simultaneously.
Three Cure Points, One Exposure Interval
A three-joint assembly cured with a single-pole guide demands three sequential trigger events: three lamp activations, two repositioning steps between them, and three separate cure intervals executed one after another. The LLG-3P-3 delivers UV to all three bond points at once, in a single trigger cycle, from one lamp controller. Total exposure time drops to the equivalent of one single-pole cure instead of three, and the part never moves between bonds. For high-volume three-joint assemblies, this is the highest-throughput liquid lightguide configuration available from a single lamp.
As with any multi-pole configuration, the trade-off against a single-pole guide is that the lamp’s total UV output is split three ways rather than delivered in full to one point — worth checking against each joint’s dose requirement, particularly on assemblies where the three bond points don’t all use the same adhesive or don’t all need identical cure energy.
Solving Dose Variation, Not Just Cycle Time
Throughput is the more visible benefit, but dose uniformity is arguably the more important one for process consistency. Sequential single-pole curing introduces inter-joint dose variation whenever trigger timing, lamp warm-up state, or operator handling differs even slightly between the first bond cured and the third — a gap that widens the longer the sequential process runs. The LLG-3P-3 cures all three joints from the identical lamp cycle, at the same irradiance, at the same moment. Every bond on the part receives matched UV dose by construction, not by careful process control — which is exactly the kind of consistency that formal process validation documentation is built to confirm, since it removes an entire category of between-bond variation from the equation rather than just controlling it more tightly.
Email Us if a three-joint assembly’s sequential cure process is producing inconsistent bond results between the first and third joint.
Precision Spot Size, Compact or Standard Reach
Each of the three output poles carries the same 3 mm core used throughout the single-pole and multi-pole LLG-3-series, concentrating UV at each bond face without irradiating adjacent components — a meaningful consideration on three-joint assemblies where the joints often sit close together. The 1,000 mm minimum cable length suits compact three-station fixtures, while the 1,500 mm option accommodates layouts with more separation between the bond points and the lamp controller’s mounting position.
Total UV transmission runs up to 5 W split across the three poles, spanning 300 nm through the visible range, and the guide is compatible with mercury arc, xenon, and halogen spot curing lamps — consistent with the rest of the LLG range.
Application Fit
The LLG-3P-3 fits any assembly with exactly three bond points that would otherwise require three sequential single-pole cure cycles — multi-port connector housings, three-point structural bonds, and assemblies with three discrete seal locations are typical matches. Its throughput and dose-uniformity advantages scale directly with cycle volume: the benefit is largest on high-volume production lines where the time and consistency gains compound across every part run through the station.
The dose-uniformity case is worth weighing separately from the throughput case when evaluating a switch, because they don’t always carry equal weight for a given process. A low-volume line may see limited cycle-time benefit from consolidating three trigger events into one, but still gain real value from eliminating dose variation between the first and third bond — particularly on assemblies where all three joints carry equal structural or functional importance and a weaker third bond isn’t an acceptable trade-off for faster changeover elsewhere in the process. Operating temperature is rated −5°C to +35°C, consistent with the rest of the LLG range.
Positioning Within the Multi-Pole Range
For two simultaneous points rather than three, the bifurcated LLG-2P-3 offers the same 3 mm-per-pole precision at a shorter 750 mm minimum length. For the maximum four simultaneous points, the quad-pole LLG-4P-3 extends the same dose-uniformity logic to a fourth joint, with cable lengths up to 2,000 mm — the longest available for any multi-pole LLG configuration. For single-point curing at higher intensity or longer cable runs than any multi-pole option offers, the single-pole LLG-1P-3, LLG-1P-5, and LLG-1P-8 cover 3 mm, 5 mm, and 8 mm cores respectively.
For UV LED multi-pole spot curing rather than arc-based systems, the Incure L9000 lightguide system supports up to four lightguides from a single controller. See Incure’s lightguide selection guide for the full comparison across single-pole and multi-pole configurations, pair the LLG-3P-3 with an Incure S20 arc spot lamp for a complete mercury-arc setup, and see the LS217 lightguide simulator for tracking transmittance on each pole independently over the guide’s service life. Contact Our Team to evaluate a three-point simultaneous cure setup for your assembly.
Visit www.incurelab.com for more information.