SG_FSE_SiplaceHF_HF3_00193901-05_eng.pdf - 第410页

1 - 24 S tudent Guide SIPLACE HF/HF3 9 Modular convey or Edition 09/2005 24 Fig. 9.2 - 13 Diagrams PCB braking Due to the automatical teachin g of the Slow PCB approach the time to reach the stopper po sition is constant…

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Student Guide SIPLACE HF/HF3

Edition 09/2005 9 Modular conveyor

Fig. 9.2 - 12 Focussing the laser beam

Please Note:

When you move the paper, the beam must follow along the edge of the PCB as accurately as pos-

sible, with minimal deflection to the left and right.

9.2.7 Setting the light barrier in the placement area

Function: 9

– Switching on the laser light barrier

– Starting the PCB braking, see Fig. 9.2 - 13.

The light barrier in the placement area can be mounted in three different positions. The light barrier

is fitted in the direction to the input conveyer. The light barrier then trigger the LASER stopper and

slow down the PCB movement. The

slow PCB approach is teached automatically via soft-

ware.The travel profile for braking the PCB (see Fig. 9.2 - 13) is started in good time to allow the

PCB to be stopped reliably at the laser light barrier after no more than 100 ms.

Paper

PCB with the laser

beam parallel to it

Visible

laser beam

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Student Guide SIPLACE HF/HF3

9 Modular conveyor Edition 09/2005

Fig. 9.2 - 13 Diagrams PCB braking

Due to the automatical teaching of the Slow PCB approach the time to reach the stopper position

is constant irrespective of the PCB weight. The transport time keeps constant.

Direction of PCB transport

Time (t)

< 100 ms

Light barrier

Laser

Travel profile

braking process

Start End

Placement areaInput belt

2nd board

Time (t)

Speed (v)

150 ms

Laser

Travel profile

braking process

Start End

Input belt

1st board

Speed (v)

Placement area

Light barrier

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Student Guide SIPLACE HF/HF3

Edition 09/2005 9 Modular conveyor

9.2.8 Setting the light barrier in the input,- intermediate- and output conveyer

Function: 9

– Recognizing and stopping the PCB boards.

– PCB monitoring in the input conveyer, that means

Is a PCB recognized in the input conveyer and this PCB appears on the station GUI, then the

machine closes the interface to the previous station. With PCB boards with outbreaks it can

happen that the PCB, is stoped, however, the signal of the light barrier goes out and the inter-

face to the previous station is opened again. Then the next PCB would move into the input con-

veyer with the PCB still lying in the input conveyer. With PCB monitoring the PCB is moved

backwards and once again forwards, untill the light barrier switches.

Assembly position for the receivers in the input-,intermediate- and output conveyer 9

The receivers can be assembled in four different positions, this is necessary if you have LP‘s with

outbreaks and for small and wide PCB‘s. For normal PCB boards you can use the standard posi-

tion 3/4 of the receiver. If you have wide PCB‘s it make sense to use the position 1 or 2, because

the stop distance is longer.

– The receivers are fixed with two screws on the conveyer rail.

– Three drillings are in the conveyer rail, so there are two positions for mounting the receiver.

– Another two positions are posibile by turning around the sensor bracket at the receiver. (see

chapt.Fig. 9.2 - 14)

Fig. 9.2 - 14 Assemble position for the light barrier receivers

Example for Assemble position 3

1 2

Transport direction

Example for Assemble position 1