00196693-03_UM_SX4DX4_SR706_EN.pdf - 第337页

User Manual SIPLACE SX4/DX4 6 Station extensions From software version SC.706.xx V ersion 06/2012 EN 6.12 Support Pin 337 6.12 Support Pin Item no. 001 19680-xx Support Pin Wide boards tend to deflect dur ing placement s…

6 Station extensions User Manual SIPLACE SX4/DX4

6.10 PCB alignment From software version SC.706.xx Version 06/2012 EN

336

6.10 PCB alignment

Item no. 00119678-xx PCB alignment, dual conveyor

6.10.1 Description

PCBs to be processed sometimes have a length to width ratio of 1:2 or worse. This means that

the shorter side of the PCB points in the direction of travel. During travel, such PCBs may twist

slightly and, as a result, the fiducials no longer lie within the PCB vision camera's search window.

In this case, the "PCB alignment" option ensures that these PCBs are realigned precisely at the

stopping position.

If PCBs with recesses in the direction of travel are processed, this may result in different process-

ing

positions on machines with mechanical stoppers and on machines that monitor this position with

laser light barriers. The "PCB alignment" option ensures that the PCBs are stopped at the same

position on all PCB conveyors. The "PCB alignment" option is available for both single and dual

conveyors.

The PCB is transported into the placement area until the laser light barrier triggers the stop signal

for the PCB conveyor. The lifting table with the PCB stops then moves up into a position in which

the PCB is not yet clamped and can still be moved by the conveyor belts. The two PCB stops are

level with the PCB, and the PCB supports (magnetic pins) are already in contact with the PCB.

The two conveyor belts move the PCB against the PCB stops and align them at the same time.

The lifting table then moves into its top end position, clamps the PCB and releases it from the PCB

stops so as not to affect the placement process. After the placement process, the lifting table and

PCB alignment are lowered and the PCB is moved on.

6.11 Siemens interface

Item no. 00116808-xx SIPLACE interface

The conveyor interface on the placement machines from the X series is configured to the SMEMA

standard. It is, however, still possible to use this interface in accordance with the Siemens stan-

dard. This is a significant benefit when an SX/DX or X series machine is to be integrated into older

SIPLACE

lines, in which case it would not be necessary to retrofit the older machines to conform to the

SMEMA standard.

Simply configure the conveyor interface of the SX/DX or X series machines to the Siemens stan-

dard and

connect the machines using the associated interface cable.

User Manual SIPLACE SX4/DX4 6 Station extensions

From software version SC.706.xx Version 06/2012 EN 6.12 Support Pin

337

6.12 Support Pin

Item no. 00119680-xx Support Pin

Wide boards tend to deflect during placement such that, under certain circumstances, the compo-

nents can no longer be placed with the desired accuracy. Highly curved PCBs also affect the

placement accuracy. This problem can be easily rectified by fitting magnetic pin supports on the

lifting table.

Fig. 6.12 - 1 Magnetic pin support

6 Station extensions User Manual SIPLACE SX4/DX4

6.13 Vacuum pump From software version SC.706.xx Version 06/2012 EN

338

6.13 Vacuum pump

Item no. 00119787-xx vacuum pump for X series and SX/DX

6.13.1 Safety instructions for vacuum pumps

WARNING 6

 Please observe the safety instructions in the operating manual supplied!

6.13.2 Description

Each Collect&Place head has its own vacuum generator, which supplies the holding and place-

ment circuit with the required vacuum. The vacuum generator for the placement heads functions

according to the Venturi principle. When operated together with a vacuum pump, the SpeedStar

(C&P20) can reduce the compressed air consumption considerably. The running costs will fall ac-

cording to the energy costs incurred.

PLEASE NOTE 6

The compressed air consumption values with the vacuum pump can be found in section 3.2.4

page 102

The vacuum pump is already present as a standard component in the SIPLACE DX4.

6.14 Long board option (LBO)

The "Long board" option allows you to place boards which exceed the specified board length.

PLEASE NOTE 6

The function of this option depends on the board geometry.

Item no. 00519873-xx "Long board" option for dual conveyor SX

Item no. 00120623-xx "Long board 550 mm" option for single conveyor DX4

Item no. 00120624-xx "Long board 380 mm" option for single conveyor DX4