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Operators Manual
ALS 330/430
Release 4/06 Page 11 Description
2. Description
CAUTION! - The machine is connected to mains. Only authorised personnel
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 labeller is available in a right-hand or a left-hand version. The expression right or left is
related to the direction of product transport.
The material is unwound from the label roll (3). The maximum diameter of the label roll is 300
mm. The width of the backing paper is 155mm for a 330 and 230mm for a 430 machine. The
label roll is guided by a swing away lever (4).
The dancer arm (011) keeps the material tight and the acceleration forces low. The deviator
roller (8) allows the use of inside or outside wound label web. The deviator roller (9) guides the
material to the dispensing edge. Paper brake brush (6) applies a brake force to the label web
and keeps the label web under a certain tension without disturbing the movement. At the
dispensing edge (10) the label sensor (15) is mounted. It detects the gap between the labels.
The sensor includes a light source and a light receiver. The software can adjust the sensitivity.
With this information, the machine calculates the position of the label. At the dispensing edge
(10) the label is separated from the backing paper and moved to the product. With a foam roller
(16) in front of the dispensing edge, the label is applied to the product.
The deviator rolls (5) guides the backing material to the drive roller (1).
The drive roller (1) moves the label web according to the adjusted dispensing speed.
The pressure roll (12) has to be positioned in the centre of the label web, in order to guide the
web straight on track. By means of the knurled screws, the pressure roller is held in its required
lateral position on the shaft.
With its handle the pressure roller (12) will be opened and closed. When inserting the material
the pressure roller has to be opened.
The deviator roller (17) guides the backing paper to the rewind mandrel (13). The rewind
mandrel should always be set to expanded position when mounting a new roll of labels. This
allows an easy removal of the collected backing material.
To ensure a reliable run of the label web the guides (18) have to be adjusted according to the
width of the labels in use.