00198171-02_Technical_Training_FSE_TX-Series_EN - 第65页

6 Conveyor System 6.3 Conveyor Functionality Technical Training FSE SIPLACE TX-Series 01/2018 65 For full specification details see the User Manual delivered with your machine. Extract conveyor specification for TX micro…

6 Conveyor System

6.2 Specification

64 Technical Training FSE SIPLACE TX-Series 01/2018

T - Transport direction

1. Fixture of additional fiducial bar to machine

frame

2. Fixture rail on the vacuum tool in Y direc-

tion

3. Additional fiducial bar for lane 2 in X direc-

tion

4. Vacuum tool on lane 2

5. Additional fiducial bar for lane 1 in X direc-

tion

6. Vacuum tool on lane 1

TX micron vacuum tooling

Vacuum tooling SIPLACE TX micron 15µm with Y-fiducial bar. This vacuum tool is necessary to

ensure the accuracy on customer side with the new ACT board (100x250mm).

1. X-fiducial bar

2. Vacuum tooling location

3. Y-fiducial bars

The TX micron machines will be equipped with two X-fiducial bars parallel to the conveyor close

outside of the conveyor rails on the standard conveyor.

1. Two X-fiducial bars used for increased ac-

curacy during placement process.

6.2 Specification

Extract conveyor specification for TX

Dual conveyor standard (L X W) 50 x 45mm to 375mm x 260mm

Dual conveyor single lane mode (L X W) 50 x 45mm to 375mm x 460mm

Standard PCB thickness 0.3 mm to 4.5mm

Maximum PCB weight 2 kg

Clearance below PCB 25 mm

Maximum PCB warpage 2 mm

6 Conveyor System

6.3 Conveyor Functionality

Technical Training FSE SIPLACE TX-Series 01/2018 65

For full specification details see the User Manual delivered with your machine.

Extract conveyor specification for TX micron

Dual conveyor flexible 20µm /25µm (L X W) 50 mm x 55 mm to 375mm x 260mm

Dual conveyor flexible 15µm (L X W) 50 mm x 55 mm to 250mm x 100mm

Dual conveyor single lane mode 20µm /25µm (L X W) 50 mm x 55 mm to 375mm x 460mm

Standard PCB thickness 0.3 mm to 4.5mm

Maximum PCB weight 2 kg

Clearance below PCB 25 mm

Maximum PCB warpage 2.5 mm

6.3 Conveyor Functionality

6.3.1 TX Board monitoring and clamping

1. Input section light barrier sensor

2. Second light barrier sensor in PA (option)

3. PA light barrier sensor

4. Laser sensor

5. Output section light barrier sensor

6. Amplifier for light barrier sensor

Board recognition

●

Board recognition is monitored and controlled by fiber optic sensors consisting of a control

unit with transmitter and receiver.

●

Each lane has 3 sets of fiber optic sensors in the Input, PA and Output sections.

●

Each lane has one laser beam sensor in PA.

●

Additional fiber optic sensors for second board stop in PA as option.

Board stopping in placement area

●

When the PCB reaches the placement area, the PCB is detected by an interruption to the light

beam and the speed of the conveyor belt is reduced.

●

About 100ms later, a laser beam recognizes the front edge of the slowly approaching board

and the board will be stopped.

Only for machines with vacuum tooling:

●

When the PCB reaches the placement area, the PCB is detected by an interruption to the light

beam on the vacuum tooling.

●

The conveyor belt changes its direction and the PCB is driven backwards and stopped, when

the PCB reaches the in the station SW defined position (value "Offset PCB sensor back-

wards").

●

Afterwards the lifting table (plate) raised and the vacuum is switched on. When the vacuum

value is reached, the placement process can be started.

Board clamping

●

When the board is stopped, the lifting table (plate) is raised by the lifting motor and clamps the

board.

●

Clamping status is checked using the current and encoder system of the conveyor belt motor.

This function is done by the transport control boards.

●

The PCB will be clamped from the bottom side against a fixed edge on the conveyor system.

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