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How to Make Dispensers See Clearly, Measure Precisely & Control Stably
Release time:2026-08-06
A reliable fully automatic dispenser relies on full-link coordination: Sensing – Measurement – Control – Protection.
Any oversight across processes—workpiece offset, needle collision, broken adhesive bead, wrong mixed glue, indexing table misalignment, pressure fluctuation, and more—will lower production yield and create hidden operational risks.
HEYI Sensor Solutions for Dispenser Applications
We dive into 7 core working procedures of fully automatic dispensers to demonstrate how HEYI’s full-range sensor solutions help dispensers achieve clear vision, precise measurement and stable control.
1. Workpiece In-Place Detection
Application Scenario
Before dispensing, the system must confirm workpieces have arrived at the dispensing station. Workpieces on conveyors or rotary tables may suffer positional deviation.
Solution: HEYI ZL-B Series Background Suppression (BGS) Photoelectric Sensors
- Adopt background suppression technology to eliminate background interference
- Wide adjustable sensing range: 2–400 mm
- Excellent performance against light/dark contrast differences; tiny blind zone of only 2–3 mm
- The dispensing workflow only initiates after the sensor triggers a signal
2. Dispensing Head Origin Position Detection
Application Scenario
PCBs and plastic housings from different batches carry height tolerance up to ±0.5 mm. Fixed needle height may lead to needle collision or adhesive stringing.
Solution: HEYI LC-S Series CMOS Laser Displacement Sensors
Mount the laser displacement sensor beside the dispensing needle. Short, medium and long detection ranges are optional, with repeat accuracy up to 10 μm.
3. Adhesive Bead Forming Inspection
Application Scenario
Post-dispensing inspection is required to verify continuous adhesive beads and detect offset tracks, air bubbles or broken glue lines.
Solution: HEYI SV Series AI Vision Sensors
Install the AI vision sensor at the post-dispensing station for real-time inspection of adhesive bead quality:
- Megapixel resolution supports high-speed inspection over long distances and wide fields of view, with auto-focus and brightness correction
- Multiple built-in inspection functions: color recognition, contour comparison, area measurement, brightness identification, position correction, width/diameter gauging, edge presence detection, pitch measurement, character and barcode reading
- Output NG alarm or reject signal upon missing glue, bead offset or broken lines to prevent defective products from flowing downstream
4. Adhesive Color Differentiation
Application Scenario
In certain dispensing processes, glue colors correspond to independent glue paths or bonding strength. It is critical to verify that the correct glue variant is in use.
Solution: HEYI EB-C21 High-Precision Intelligent Digital RGB Color Sensors
- Identifies subtle chromatic aberrations and distinguishes over 3,000 color types
- 8-channel design, capable of storing 8 color references simultaneously with 4 switch signal outputs
- Triggers an alarm for mismatched glue colors to avoid defective products caused by wrong glue mixing
5. Moving Component Position Detection
Application Scenario
Dispensers commonly use indexing tables or rotary platforms for workpiece conveyance. Sensors must verify accurate table indexing and workpiece presence at each station.
Solution: HEYI UE Series Slot Photoelectric Sensors
Install slot sensors on rotary tables and moving parts for real-time position validation:
- Equipped with two independent outputs to satisfy diverse signal requirements
- High-speed response frequency up to 2 kHz
- Compact form factor, strong anti-interference performance and outstanding stability
- A signal is triggered when light through the slot is blocked by passing workpieces for position confirmation and counting
Many customers ask: How do these sensors perform on actual mass-production dispensing lines?
The answer is straightforward: HEYI’s own manufacturing workshop deploys fully automatic dispensers integrated with self-developed sensors.
The complete solution—covering workpiece feeding confirmation, online adhesive bead quality inspection and closed-loop dispensing pressure control—has undergone long-term precision and stability validation in precision component mass production.
Backed by continuous optimization and massive operational data accumulated from our in-house production lines, HEYI delivers ready-to-deploy integrated sensor solutions for electronics, lithium battery, automotive and other manufacturing sectors.
If you require sensor selection guidance or customized solution design for dispensing equipment, feel free to contact us for professional technical support and tailored matching plans.
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