FRITSCH Pick and Place machine.pdf - 第30页
30 Con v e y or systems F ast and easy Especially in small series the stand- and changeo ver times should be reduced to a minim um. Theref ore the conv e yor of the placeALL® range was optimized. The justage of the PCB w…
29
Feeder storage rack
The feeder trolley makes it possible to safely store all
feeder units that are not required for the current
assembly process near to the placement machine. Whilst
the machine is producing, the operator can already get
the feeders needed for the next project on the feeder
trolley. After product change the feeder are simple
plugged from the trolley to the machine.
The different racks make it possible to stock up all
materials, like rolls, tubes or small components needed
for production. The mounted wheels allow an easy and
smart moving of the trolley.
The feeder trolley has the following racks:
2 x racks with 25 slots for feeders
1 x rack for small parts
All in all, the routes to be made can be shortened,
flexibility increased and the operator relieved.
Table feeder storage
Portable or at the working place mountable feeder com-
partments enable the solid and vertical storage of feeder
which are not in use at the machine.
Feeder set-up stations
An external feeder set-up station enables a set-up of
feeders irrespective of the machine. Thereby the set-up of
a new project can be carried out at the same time as the
current project is still being assembled.
Feeder racks
Feeder racks are required to use tape or tube feeders
on the machine. Each rack ensures the communication to
the individual feeders. Depending on the type of
machine, different feeder racks can be mounted.
Feeder adapter
The feeder adapter allows the use of belt and bar
feeders using a sub-D connection on present machines.
The adapter allows the set-up of the feeders in the
software and thereby emulates the additional functions
on present machines.
Feeder systems
30
Conveyor systems
Fast and easy
Especially in small series the stand- and changeover
times should be reduced to a minimum. Therefore the
conveyor of the placeALL® range was optimized. The
justage of the PCB width as well as the positioning of the
supporter pins below the circuit can be done without
tools. Depending on application and local conditions the
best conveyor for optimal transportation can be chosen:
• 1 Zone-Conveyor
• 3 Zone-Conveyor
• Batch-Conveyor from left or right
SMEMA Interface
Each conveyor has the standard SMEMA interface. Thus,
machines can easily be integrated into any production
lines or even combined with a loader and unloader to
automate partial the pick & place process.
Stressless motion
To bring sensitive PCBs such as ceramic subtrates
or partial assembled PCBs safely to the placement
position, the PCBs are slowly moved through a ramp
of deceleration to the stopper and so the mechanical
load is reduced to a minimum. All conveyors are fully
programmable. The rate of feed, ramps and waiting times
can be adapted to the application.
Customization
By request the conveyor can be equipped with a
customized intake for workholding xture. This enables
to handle even heavy or customized workholding xture
in the placeALL
®
.
Standalone
Batch-System
Inline-System
31
Dispensing systems
Dispensing modul
While the production of prototypes and small series it
is an advantage to bring glue or solder paste with the
help of a machine on the PCBs and than to assemble it.
Several dispensing systems are available and with the
double dispenser module it is possible to handle two
various uids.
Time-pressure dispenser valve
The simple means of attaching the valve makes it
particularly robust and low-maintenance. The adjustable
pressure affects the cartridge after a short period.
The desired amount can easily be set in the software.
Normally for solder paste or glue for rough structures.
Precision dispenser valve
In the case of the precision dispenser valve, additional
parameters such as temperature and the ll level of the
cartridge are collected.
The processor control regulates these values, the
pressure and the time of the dispensing impulse in order
to achieve the highest repeat accuracy. This enables the
safe dispensing of amounts from 0.001 to 10 mm³.
By this Fine-Pitch components down to a pitch of 0.5
mm can be safely dispensed.
Jet-Dispensing-System
The very fast piezo dispenser valve dispenses amounts at
a very high speed. In the case of a dispensing frequency
of up to 150 dots/second, it is possible to constantly
apply very small amounts (up to 2nl).
The high dispensing frequency enables the dispensing of
smallest amounts as well as larger with only one head
dispensing.
Screw dispenser valve
Suitable for the accurate dispensing of medium-viscose
media such as SMD adhesive, soldering paste or silver
conductive adhesive.
The medium is transported with as little application of
pressure as possible. The actual dispensing is carried out
by being transported by the spindles. This means the
application of pressure of the material is kept as low as
possible.