Nordson Corporation
LIQUID ADHESIVE DISPENSING SYSTEM

Abstract:

A dispenser for dispensing a liquid onto a substrate is disclosed. The dispenser includes a dispenser module including a nozzle body having an inlet, an outlet, a chamber for receiving a liquid, and a central valve body attached to the nozzle body. The central valve body defines a piston chamber. The dispenser module also includes a valve member having a piston portion disposed within the piston chamber of the central valve body and a needle portion extending form the piston portion into the chamber of the nozzle body. The dispenser also includes a heater block for heating the nozzle body, where the heater block defines a liquid passage for transporting liquid from the liquid supply to the dispenser. A first surface of the heater block directly contacts the nozzle body, and the entirety of the central valve body is spaced from the heater block. The dispenser also includes a stroke adjustment assembly comprising an adjustment rod configured to contact the valve member and a locking collar configured to alternate between an unlocked and a locked configuration.