6241f - 第22页
Page 14 GS-394-02 Tool Kits • A kit containing basic hand tools and common hardware items is included with each machine. • An optional Site Calibration Tool Kit contains special tools required for machine calibration, on…
Page 13GS-394-02
Chain-to-Chain Transfer
The chain-to-chain system transfers components from the sequenc-
ing chain to the insertion head chain. The design minimizes set-ups
and adjustments and uses a servo motor belt drive system, with
position feedback encoder, to provide a highly reliable component
transfer. Automatic belt tensioning assures that belts are properly
adjusted.
Low Part Sensing/Display
The low part sensing feature provides the operator with a visual
alarm display whenever any input tape station nears empty within
each add-on module. Each input station contains a roller-type sensor
flag assembly that interrupts a light beam when the tape runs out.
The main machine tower light illuminates, and an audible alarm is
sounded, when a low part condition is sensed. The tower light is
reset when a new reel or box of components is installed and the
sensor is reset on top of the new tape. In addition, an error message
is displayed on the monitor to inform the operator of the location of
the low part condition.
Scrap Tape Removal
The two scrap tapes from each dispense head drop down into the
removable scrap bins located beneath the dispense heads. These
scrap bins are open on both ends so that tape can be swept through
all add-on modules and removed in one location.
Machine Status Light/Audible Alarm
The machine status light/audible alarm indicates the status of
machine operation. Each of the lights are user configurable via the
machine software.
• Red
• Yellow
• Green
• Blue
• Audible alarm
Page 14 GS-394-02
Tool Kits
• A kit containing basic hand tools and common hardware items
is included with each machine.
• An optional Site Calibration Tool Kit contains special tools
required for machine calibration, only one kit is required per
customer site.
Add-On Sequencer Module
The capacity of each add-on module is 20 dispensing stations, for
processing 20 discrete component types or values. Each station must
be equipped with a dispensing head. An unused dispensing station
does not affect normal machine operation, but must contain a blank
dispensing head.
All add-on sequencer modules are identical. Interface cables and
pneumatic connections are “daisy-chained” from module to module.
This speeds installation and simplifies trouble-shooting.
When a head runs out of components, a “pop-up” screen is displayed
on the monitor, indicating which head needs to be reloaded.
Dispensing Heads with Optical Refire
The VCD/Sequencer 8 uses rotary dispensing heads to cut and drop
components on the sequencer chain. Rotary dispensing heads are
available in two models: 5mm (0.200") pitch and 10mm (0.400")
pitch, with optical refire for each of the pitch variables.
Dispensing heads are not included with add-on modules and must be
ordered separately to meet individual machine requirements.
Optional Features
Page 15GS-394-02
The rotary dispensing head has several unique features:
• High operating speed of 25,000 cycle/hour.
• Input tape class changeover requires 30 seconds by adjusting
the input tape guides.
• Only one cut component is staged during component load,
reducing scrap and simplifying changeover.
• Symmetrical cutter provides two cutting surfaces for an
increased life.
• Low friction assembly requires minimal lubrication.
• Tape guide setting with lead screw allows fine adjustment of
tape guides.
• Detent provides a method of determining component position.
The optical refire circuit in the dispensing head senses a missing
component from the input tape and recycles (refires) the dispensing
head index mechanism to bring a component into position for
programmed dispensing. Because of its ability to cycle through
blank areas of the input tape, it reduces the need for operator
attention, thus increasing the effective output rate. This refire
feature is most useful when processing pre-inspected component
reels, in which gaps are left because of the removal of defective
components.
Each refire dispensing head is equipped with a light source and an
optical sensor. As a taped component is indexed into position for
dispensing onto the conveyor chain, one of its leads interrupts the
light beam.
If the light beam is not interrupted, a “part missing” signal is
generated causing the dispensing head to automatically index on the
next machine cycle which requires a part from that head. This
“refire” action repeats until a component is detected at the dispens-
ing position or a programmed maximum count is reached. Any
missing components in the input tape will cause refiring of the
dispensing head, reducing effective machine cycle rate.