00195941-03-UM SiplaceCA-EN.pdf - 第186页
3 Technical Data User Manual SIPLACE CA 3.8 Placement Heads Edition 08/2011 EN 186 3 Fig. 3.8 - 4 20 segment Collect&Place CA head - function grou ps part 2 (1) C&P component camer a, type 23, 6 x 6, digit a l (2…
User Manual SIPLACE CA 3 Technical Data
Edition 08/2011 EN 3.8 Placement Heads
185
3.8.3 20 Segment Collect&Place CA Head
3
Fig. 3.8 - 3 20 segment Collect&Place CA head - function groups part 1
(1) DP drive, 20 drives
(2) "Vacuum sensor holding circuit"
(3) Compressed air connection for 20 Venturi nozzles of the pick and place holding circuit
(4) Line for the exhaust air from the pressure control valve (7)
(5) Retract cylinder
(6) Z motor (linear motor)
(7) Pressure control valve
3 Technical Data User Manual SIPLACE CA
3.8 Placement Heads Edition 08/2011 EN
186
3
Fig. 3.8 - 4 20 segment Collect&Place CA head - function groups part 2
(1) C&P component camera, type 23, 6 x 6, digital
(2) Intermediate distributor board
(3) Star motor
(4) Handle
(5) Component sensor
(6) Star with 20 nozzles
User Manual SIPLACE CA 3 Technical Data
Edition 08/2011 EN 3.8 Placement Heads
187
3.8.3.1 Description
The 20 segment Collect&Place CA head functions according to the Collect&Place principle i.e.
that twenty components are picked up from the placement head within each cycle. At the pickup
and placement position the component sensor checks that the component is present at the noz-
zle. On their way to the placement position the components are optically centered and rotated into
the required placement angle. Finally forced air sets down the component gently and accurately
on the board.
The C&P20CA placement head is an advanced design which significantly increases the perfor-
mance of the placement head and of the whole machine. The compact structure of the C&P20CA
head makes very short cycle times possible. In this case, the star axis is at an angle to the PCB
level. This geometry allows the segments to be arranged in a very small space.
The component camera is still integrated into the C&P20CA head. This saves additional travel-
ing distances to external centering cameras. Each segment also has a separate DP drive for ro-
tating the nozzle. The nozzles are therefore no longer rotated into the correct position at a single
head station. They can be rotated into their placement position at any time and independently of
one another.
Each segment has a separate vacuum generator. This greatly reduces the time taken to switch
between vacuum and air kiss. It also allows a vacuum check to be carried out in the holding circuit
for each individual nozzle.
The Z drive for the segments is implemented with a linear motor with linear path measuring sys-
tem, and is thus extremely precise. In the pickup/placement position, the Z drive moves the seg-
ments up or down in the vertical direction.