SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第66页
1 - 40 S tudent Guide SIPLACE HF/HF3 2 Overview Edition 09/2005 40 2.2.16.2 Nozzle changer T win head The Siplace HF is supplied with a st andard nozzl e changer for the T win head. The nozzle changer is installed in sec…
1 - 39
Student Guide SIPLACE HF/HF3
Edition 09/2005 2 Overview
39
2.2.16 TwinHead for high accuracy
2.2.16.1 Description
This Twin head developed consists of two P&P heads of same model coupled together who work
according to the Pick&Place principle.The second P&P head is rotate of 180 degree. Two compo-
nents are pick up from the feeder, on the way to placement position the component are recognize
optically and turn it into placement position. After this are put gently with the aid of controlled air
kiss and position precisely they onto the PCB board.
For the TwinHead, new nozzles (Type 5xx) were developed. However, the nozzles of the
Pick&Place head type 4xx and the nozzles of the Collect&Place heads from the type 8xx and 9xx
can use with an adapter.
Fig. 2.2 - 28 TwinHead
1. Main board on modul 1 and modul 2
2. D-Axis
3. linear motor Z-Axis
4. Incremental measurement system Z-Axis
Modul 2, rotate 180 °
concerning Modul 1.
Modul 1
1 - 40
Student Guide SIPLACE HF/HF3
2 Overview Edition 09/2005
40
2.2.16.2 Nozzle changer Twin head
The Siplace HF is supplied with a standard nozzle changer for the Twin head. The nozzle changer
is installed in section 3.
The nozzle changer for a Twin head consists of the standard module as 3 garage, each with two
nozzle and one garage for one special nozzle (see Fig. 2.2 - 29).
Fig. 2.2 - 29 Nozzle changer Twin head
1. Standard nozzle changer
2. extended nozzle changer
3. completed nozzle changer
Please Note:
The configurations mentioned above could be changed as required and magazines for standard
and special nozzles can be added one by one.
Magazin for 1
special nozzle
Magazin for 2
standard nozzle
Transport direction
1 - 41
Student Guide SIPLACE HF/HF3
Edition 09/2005 2 Overview
41
2.2.17 Conveyor system
2.2.17.1 General
The Siplace HF comes standard with a single conveyor. The dual conveyor system is available as
an option. Depending on your requirements you can choose the left or right conveyor side as a
fixed conveyor side.
In the Processing Area, the PCB board will be clamping from the botton side against the fixed
holder on the conveyor system. Therefore, the distance between the top of the PCB board and
the C&P Head will always be the same for every PCB board, regardless of the PCB thickness.
Accordingly, the placement rate is not dependent on the PCB board thickness. Furthermore, the
fiducial recognition can be optimized, because the distance between the top of the PCB board and
the PCB camera will always be the same. This will ensure the focuses will always remain the same
when the fiducial shape is imaged optically on the CCD chip of the PCB camera.
The 12 C&P head can handle components with a maximum heigh of 6 mm and the 6 C&P head
can handle components with a maximum heigh of 8,5 mm.
The conveyor system use SMEMA or SIEMENS(option) interface and can be adjusted to following
heights 830, 900, 930 or 950 mm.
The transferring of the PCB boards is checked and controlled with light barriers which consist of
a transmitter module and a receiving module. When the PCB board arrives at the placement po-
sition, it is stopped at the precise position with the aid of a Laser beam and then it is clamped from
the bottom side.
Clamping 2
The PCB will be lifted for placment components and pressed against to the PCB holder. During
start of the lifting table, the PCB is lifted and clamping with the complete transportation drive unit.
Therefore the placement level is constant and independent of the thickness from the PCB.
PCB`s with a length of 450 mm (368mm for the HS60) will be clamped and supported by the lifting
table. However, any lenght over 450 mm (368mm for HS60) will not be supported by the lifting
table.
Width Adjustment 2
The width adjustment occurs with one motor via a job from the Siplace Pro computer. Different
widths for a double conveyor for the two conveyor tracks are possible. The width adjustment oc-
curs by means of stepping motor so that the adjustment of the new PCB width can occur indepen-
dent from other machine components(e.g. axis gantry). Now we don‘t use the BERO for the width
adjustment on the conveyor side.
The width of each PCB conveyor system (Conveyor1 and 2) will be adjusted with 3 drive pins
(pneumatic cylinder), they are installed under the input , intermediate and output conveyors. The
drive pins will be move continuously and parallel to left and rihgt side with a recirculating spindle,
one belt and a step motor.