D-serie level 1 EN - 第45页
Overview Gantry Assemblies S tude nt Guide Advanced Level 1 SIPLACE D-Series EN 05/2007 Overview 3-21 3.4.7 Gantry 3.4.7.1 General Precise distance measuring systems determine the p osition of the X and Y axes. This invo…
Overview
Assemblies Changeover Table Components
Student Guide Advanced Level 1 SIPLACE D-Series
Overview EN 05/2007
3-20
3.4.6.2 Overview of S-Feeder
Description: 9 different feeders are enough to process tapes with widths from 8 to 88 mm. The tape reels
on the feeder are taken up by the component trolley tape container. The cutter then cuts up the empty
tape automatically. SIPLACE feeders are known for their short cycle times and highly accurate pickup
positions.
These feeders can also be used in other SIPLACE placement machines.
In addition to the tape feeders, bulkcase feeders, linear feeders, surftape feeders, Dipflux modules,
component reject conveyors and manual trays can also be used. If a location is not occupied, a so-called
dummy feeder is inserted for safety purposes.
3-15: Overview of standard feeders
Overview
Gantry Assemblies
Student Guide Advanced Level 1 SIPLACE D-Series
EN 05/2007 Overview
3-21
3.4.7 Gantry
3.4.7.1 General
Precise distance measuring systems determine the position of the X and Y axes. This involves the
optoelectronic detection of marker lines on the incremental scales and the transmission of the track
signals to the axis control point in the control unit.
Direct drive techniques are then used to position the placement heads in the Y direction (in the X
direction also for D3 machines). This prevents the typical frictional loss which occurs when complex drive
systems are used. This solution also avoids the wear and tear which can significantly impair the accuracy
of positioning systems over time.
X-axis drive
With the help of a toothed belt, the rotary movement of the X-axis motor is directly converted into a
lengthwise movement of the placement head, in the X-direction.
Y-axis drive
A linear motor moves the placement head lengthwise, in the Y direction.
3-16: Machine gantries
Legend
1. Gantry 1
2. Gantry 2
3. Gantry 3
4. Gantry 4
The D4 placement machine is equipped with four
gantries. These are used to accurately and
independently position the four C&P heads in the
X and Y directions.
Due to their construction, the gantries are resistant
to buckling. The precise mechanical guidance of
the axes is achieved with the aid of ball bearing
units.
Overview
Assemblies Gantry
Student Guide Advanced Level 1 SIPLACE D-Series
Overview EN 05/2007
3-22
3.4.7.2 X-Axis Construction
3-17: X-axis design
Legend
The following modules are installed on the head mount:
PCB camera
Gantry head distributor
Vision board
16 bit processor board (TQ module)
Incremental encoder
C&P12 head (D4)
or with head modularity C&P12 or C&P6 head (D3/D2/D1)
1 Gantry arm 5 A.C. servo motor with toothed belt
2 Head mount 6 Trailing cable
3 Linear measuring system 7 X belt
4 X guide system 8 Bumper