Description; Mechanics - Avery Dennison ALS 221 User Manual

Operators Manual
ALS 221

2. Description

CAUTION! - The machine is connected to mains. Only authorised person-
nel may open the cover. Operation without this cover is not allowed.
This chapter explains the structure and the function of the labeller. The expressions used are
explained here.

2.1 Mechanics

The machine is available in a right- or a left-hand version. The expression right or left is related
to the direction of product transport. In the following a right hand machine is explained. For the
left hand version all explanations have to be mirrored. The dispensing mechanics of the ma-
chine are shown below.
The label material is unwound from roller (003). The maximum diameter of the label roll is 300
mm. The maximum width is 100 mm. The material roll is guided by 2 removable plate's (002).
The guide plate in front has to be pressed against the label roll. Behind the cap (004) of unwind
mandrel (003) an adjustment screw for the brake is located. The unwind brake avoids after run
of the label roll when the label drive stops.
Note: For labels longer than 100 mm and in "side labelling applications" it is recommended to
use the optional available kit dancer arm controlled unwind brake. This device avoids uncon-
trolled after run of label material. The brake should not be fixed too tight, otherwise the motor
may stall or the material web gets broken.
The dancer arm (011) keeps the material tight and the acceleration forces low. The deviator
roller (008) makes sure that the material is guided correctly. The material is guided to the dis-
pensing edge via the deviator roller (009).
The brush (006) keeps the material tight without disturbing the movement. At the dispensing
edge (010) the label sensor (007) is mounted. The label sensor detects the gaps between la-
bels. The label sensor comprises of a light source and a light receiver. The sensitivity can be
adjusted by the operators panel.
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