If you are evaluating automated dispensing systems for adhesive, sealant, or fluid application, the wrong choice is usually a pump that doesn't match your material, a motion platform that can't hold bead width through corners, or a station with no real bead inspection — so a slow valve drift only shows up at downstream leak or pull test. We build the station around all three problems at once.
AMD Machines has engineered custom dispensing systems for more than thirty years, with over 2,500 machines delivered. An automated dispensing system from AMD is built around your material chemistry, part geometry, target bead spec, and takt time — and integrated with the controls, vision, and traceability your customers and auditors expect.
What is an automated dispensing system?
An automated dispensing system is a production machine that meters and applies a controlled amount of adhesive, sealant, lubricant, or other fluid to a part along a programmed path — without an operator holding a gun. A robot or gantry traces the path, the pump or jet valve delivers volume, and inline inspection verifies the bead before the part leaves the station.
Compared to manual dispensing, an automated station:
- Holds bead width and volume within tight, deterministic tolerances every cycle
- Eliminates operator "extra just to be safe" overuse — typical material savings of 30–50%
- Verifies every bead with vision or laser profiling instead of spot-checking
- Logs serialized data — recipe, volume, dispense pressure, inspection result — to your MES
How an automated dispensing system works
- Part identification — barcode, DataMatrix, or RFID read at infeed loads the matching recipe; no scan, no dispense.
- Load and locate — the part lands in a nest with hardened locators, or a vision routine reads fiducials and corrects the dispense path for unit-to-unit variation.
- Pre-dispense check — surface presence, fiducial position, and (where required) plasma or wipe pretreatment are verified before material flows.
- Dispense — the robot or gantry traces the path while the pump or jet valve delivers metered volume; speed, pressure, and Z-height are coordinated through corners and contours.
- Inline bead inspection — a 2D camera or laser profiler measures width, height, position, continuity, and presence immediately after dispense.
- Sort and log — pass, rework, or reject is routed automatically; serialized record pushes to MES with every dispense parameter and inspection reading.
- Cure or handoff — UV, heat, or downstream handoff to assembly, pressing, or functional test.
Dispensing methods compared
| Method | Best for | Typical volume accuracy | Representative vendors |
|---|---|---|---|
| Progressive cavity (PC) pump | Medium-to-high viscosity (50k–500k cP): RTV silicone, FIPG, structural epoxy | ±1–2% on continuous bead | Viscotec, Nordson EFD, Graco |
| Piston dispenser | Precise shot metering: adhesive shots, lubricant dots, solder paste | ±1% or better | Nordson EFD Ultimus/7V, Techcon, Scheugenpflug |
| Jet valve | High-speed, small-volume dots: conformal coat, underfill, micro-bond | ±3–5% per drop, <±2% averaged | Nordson ASYMTEK DJ-9500, Musashi ML-5000X |
| Two-component meter-mix | Reactive 1:1 to 100:1: structural epoxy, polyurethane, 2K silicone | ±1% mix-ratio, ±1% volume | Graco PR70, Scheugenpflug DosP/DosC, Nordson EFD 2K |
| Time-pressure | Low-cost, low-viscosity work: thread lockers, low-criticality dots | ±5–10% | Nordson EFD Ultimus V, Techcon TS Series |
Many production lines combine methods — a jet valve for high-speed adhesive dots on a PCB plus a piston dispenser for a downstream potting cavity, or PC-pumped FIPG for the primary seal with 2K meter-mix for a secondary structural bond.
Key components of an AMD dispensing station
- Pump or valve — Nordson EFD, Nordson ASYMTEK, Graco, Viscotec, Scheugenpflug, Musashi, or Techcon, sized to material viscosity, shot size, and cycle time
- Material conditioning — heated hoses, jacketed valves, and material temperature controllers holding ±1 °C; chilled lines for cyanoacrylates and other temperature-sensitive chemistries
- Motion platform — see below
- Inline bead inspection — Keyence LJ-X8000 laser profiler, Cognex In-Sight 2800, or Keyence CV-X 2D vision
- Controls and HMI — Allen-Bradley CompactLogix/ControlLogix or Siemens S7-1500, with FactoryTalk View or WinCC
- Safety system — dual-channel circuits per ISO 13849, interlocked guarding, UV containment where applicable
- Sortation and data — pass/rework/reject routing, reject-bin lockout, serialized records to your MES
| Motion platform | Typical hardware | Best for |
|---|---|---|
| 6-axis robotic cell | FANUC LR Mate 200iD, M-10iD; ABB IRB 4600; KUKA KR 10 | 3D contours, large housings, panels |
| Cartesian gantry | Festo, Bosch Rexroth, IAI; ball-screw or linear motor | Flat parts: PCBs, lids, gaskets, panels |
| Fixed-station | Servo stage or rotary dial indexing under fixed valve | High-volume dedicated lines, sub-2 s dispense |
Integration, controls, and traceability
A good dispensing station is a data-producing station. Every AMD automated dispensing system ships with:
- Per-part serialized records — part ID, recipe, volume, dispense pressure, bead-inspection result, operator, timestamp
- Real-time SPC — width, height, and volume trended with rule-based alarming on the HMI
- Recipe management — barcode scan loads path, speed, volume, and inspection thresholds per part number
- MES integration — OPC UA, MQTT, ODBC/SQL, or REST push to Rockwell FactoryTalk, AVEVA, Ignition, SAP, or a custom historian
- Material monitoring — reservoir level, pressure, and temperature logged; low-level and out-of-spec alarming for unattended operation
Industries we serve
- Automotive — FIPG transmission and powertrain gaskets, structural body bonding, EV battery cell potting and cold-plate sealing
- Electronics — conformal coating, underfill, and selective adhesive bonding on PCBs and modules
- Appliances — door-liner gaskets, motor potting, and fluid-handling seal beads
- Heavy equipment — hydraulic component sealing, hose-end potting, and structural adhesive bonding
- Aerospace and defense — sensor potting, fastener locking, and FAI/PPAP-controlled bond beads
Why AMD Machines
We are not a pump reseller bolting a Nordson or Graco unit onto a frame. We engineer the entire station in-house — mechanical, electrical, controls, fluid power, vision, and data — against the part on your bench and the takt on your floor:
- 30+ years of custom automation and 2,500+ machines delivered
- Pump selection and material conditioning matched to your chemistry, not the other way around
- Inline bead inspection sized to your reject threshold with measurement-system margin
- One supplier for the assembly automation, robotic cell, and downstream test the dispenser integrates with
Have a part, a material datasheet, and a takt time? That's enough to start. Request a quote or send us your part print and we will scope the station around it.