Description
2-5
Part 1602966−05
E 2015 Nordson Corporation
Lance Assemblies
One, two, or three lance assemblies are attached to the lift assembly. Up to
nine in-line powder pumps can be mounted on each lance assembly. The
pumps are installed in the lance ports, and held into place with a retaining
rod. If a lance pump port is not used, it is plugged with a plug module.
FLUIDIZED
1
2
IN−LINE PUMP
ATOMIZING AIR
FLOW AIR
POWDER
Figure 2-3 Lance Assembly
1. Fluidizing latch block assembly 2. Fluidizing bars
Lift Assembly
The lift assembly uses a locking air cylinder to raise and lower the lance
assemblies in and out of the feed hoppers or powder boxes:
S If a feed hopper is selected as the powder source, the lance is lowered
until it is a set distance above the fluidizing plate, as determined by the
position of a proximity sensor on the lift cylinder.
S If a powder box is selected, the lance is lowered until the level sensor on
the lance contacts the powder, and then lowered gradually as the
powder is used.
The cylinder motion and locking action are controlled by three solenoid
valves that are part of the control manifold on the roof of the feed center.
The lift cylinder has a spring-actuated locking mechanism released by air
pressure. The cylinder is locked when the air line is vented; unlocked when
pressurized. The cylinder also uses a balancing air circuit, which applies air
pressure to both sides of the piston to prevent lurching when restarting
motion after a locked stop.
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