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6 Conveyor System 6.3 Conveyor Functionality Technical Training FSE SIPLACE TX-Series 01/2018 67 Usually, pickup is from the right and then the left conveyor lane of the previous machine, in alternation. However, if ther…

6 Conveyor System

6.3 Conveyor Functionality

66 Technical Training FSE SIPLACE TX-Series 01/2018

Board clamping unit

The distance between the top of the PCB board and the placement head is always the same for

each board, regardless of the board thickness. This has the following advantages.

●

The placement rate is not dependent on the PCB board thickness.

●

Fiducial recognition is optimized. The consistent space between the board upper edge and

the PCB camera means that the PCB camera is always focused on the upper side of the

board.

1. Conveyor rail

2. Clamping rail

3. Contact points

4. Lifting motor and mechanical device

NOTICE

TX micron 15 µm

In TX micron 15µm machines a lifting table stability reinforcer is installed to ensure a stable

position of the vacuum tooling.

Special feature:

Each vacuum tooling requires a lifting table limit that matches to the PCB thickness.

Lifting table plate

Lifting table stability reinforcer

Shuttle functionality

Single conveyor = > Dual conveyor

Usually, the following right and then left con-

veyor lane are used in alternation. However,

if a conveyor lane is blocked, the other lane

can also be used several times in succes-

sion.

Dual conveyor = > Single conveyor

6 Conveyor System

6.3 Conveyor Functionality

Technical Training FSE SIPLACE TX-Series 01/2018 67

Usually, pickup is from the right and then the

left conveyor lane of the previous machine,

in alternation. However, if there is a problem

at one lane or if there is no board available,

pickup can also be from the other lane sev-

eral times in succession. Precondition: the

same product must be produced on both

lanes.

Shuttle modes

●

Same PCB “A” in both lanes 1 and 2 machine runs in i=placement mode or asynchronous

mode.

●

Two different PCBs “A” and “B” in lane 1 “A” and lane 2 “B” machine runs in i-placement mode

or asynchronous mode.

1. Predecessor

2. Shuttle

3. Moveable rail

4. Fixed rail

For detailed information refer to the shuttle user manual.

6.3.2 Width adjustment

1. Fixed conveyor side

2. Flexible conveyor side

3. Ball screw

4. Motor with belt system

During normal production the width adjustment is set automatically upon product change by

SIPLACE Pro. Manual width adjustment is possible by means of the station software.

The width adjustment is performed with a stepping motor and two ball screws. In a dual conveyor,

different widths are possible for the two conveyor lanes.

During reference run, the conveyor rails edges will be recognized by PCB camera.

Conveyor width is measured by counting system of the motor, if the conveyor width is adjusted

manually with the machine turned off, it may happen that the actual width and the width set in the

station software no longer match and the conveyor width will have to be set.

This can be done using the "find fiducial position" in the station software.

6 Conveyor System

6.3 Conveyor Functionality

68 Technical Training FSE SIPLACE TX-Series 01/2018

6.3.3 Reference run

During the machine reference run the conveyor system is initialized. This is done after the gantry

reference run is completed. The light barrier and laser light sensitivity is measured and recorded for

use during PCB recognition.

During the reference run the software checks if the rail positions have been changed and issues an

estimated position for each rail. After that the board camera drives to each of the 4 fiducials on the

conveyor rails to determine the exact position and the exact conveyor width.