Precision Volumetric Auger Valve — 15 µL Minimum Dispense for Automated Assembly

Product Overview

This auger valve meters material by positive displacement to give smooth, continuous output and precise per‑event dosing. It is built for automated cells and robot end effectors where consistent 15 µL deposits and repeatable bead shape are required. The head is compact, easy to mount, and designed for quick access and cleaning to keep line downtime low.

Problem

Automated production often fails to hold small fixed deposit volumes and smooth bead shape, causing assembly rejects and rework.

Cause

Piston or pressure‑based feeds can create pulses, be sensitive to feed pressure changes, and suffer air ingress. At small deposit sizes these disturbances appear as variable volume, stringing or inconsistent bead edges.

Solution

The auger valve uses a rotating screw to move material continuously so output follows motor speed linearly. This removes pressure pulses at the nozzle, reduces sensitivity to feed fluctuations, and improves per‑event repeatability. Quick‑disconnect head and common nozzle options make tuning and cleaning straightforward.

Application

• Automated bonding: 15 µL dots and short beads for component fixation, connector bonding and assembly points.
• Potting and gap start: fixed deposits to start downstream flow for potting.
• Sealing and gasketing: repeatable deposits for small housings and enclosures.
• Small-series production and pilot lines where repeatable per‑event dosing is needed.

How It Works 

A rotating auger pushes material forward at a rate set by motor speed. For single deposits, the controller runs the motor for a set pulse to deliver 15 µL. For continuous bead work, steady rotation produces smooth, pulse‑free output. Nozzle diameter and motor pulse length determine bead width and deposited volume. Positive displacement reduces air sensitivity and improves stability at low flow rates.

How To Choose

1. Match deposit: confirm 15 µL per event is suitable for your pad or gap; pick nozzle size to match bead width.
2. Check viscosity: provide fluid viscosity at operating temperature so we can confirm auger clearance and material options.
3. Choose feed: use a pressure pot for long runs or a gravity pot for bench/short runs; maintain stable supply to avoid starvation.
4. Integration: verify motor driver compatibility and flange dimensions for robot mounting.
5. Clean and maintain: plan spare nozzles and use quick‑disconnect head for frequent changeover.
6. Test: request a bench trial for filled or high‑viscosity fluids to lock settings before production.

FAQ 

Q1: Can the valve reliably produce 15 µL each cycle?
A1: Yes. With correct nozzle selection, motor pulse timing and steady feed, typical accuracy is ±1~4%. We advise a bench tune for final production settings.

Q2: What fluid viscosities can it handle?
A2: Common adhesives up to ~150,000 cps. For heavier pastes, request a sample test to confirm flow and wear characteristics.

Q3: Is the output pulse‑free for bead applications?
A3: Continuous auger rotation gives effectively pulse‑free nozzle output for bead work. Per‑cycle dosing uses timed motor pulses for fixed deposits.

Q4: How easy is cleaning and changeover?
A4: The quick‑disconnect head gives fast access to the auger and nozzle. Keep spare nozzles and seals to minimize downtime during changeovers.

Q5: Do you offer sample testing?
A5: Yes. Send fluid data (viscosity at working temperature and SDS) and target deposit; we will run a bench test and return results and recommended settings.