X service技术参数.pdf - 第21页

21 PCB Conveyor Single Conve yor Technical Data for the Single Conveyor *) With PCB widths > 45 0 mm make sure that the periphe ral modules are also able to process these widths. S tationar y con veyor side Right or l…

Placement area 1

Placement area 2

Output conveyor

Intermediate conveyor

Input conveyor

PCB Conveyor

Single Conveyor

Description

For placement, the PCB is

clamped from below. The dis-

tance between the top of the

PCB and the placement head

thus remains unchanged for

each PCB, and is not depen-

dent on the thickness of the

PCB. The placement rate is

also independent of the PCB

thickness.

Since the distance between

the PCB surface and the PCB

camera remains the same,

the PCB camera is always

focussed on the PCB surface

with the same level of sharp-

ness.

The PCB fiducial contours

are optimally mapped on the

CCD chip of the PCB camera.

The inline PCB conveyor

system quickly adapts to a

wide range of PCB widths.

The setting is made using the

placement program or via

the station software menu.

The width of the PCB convey-

or is monitored by an inte-

gral control circuit.

The transport height can be

modified, thus allowing the

machines to be integrated

into lines with a transport

height of 830, 900, 930 or

950 mm.

The PCB conveyors can com-

municate with the individual

machines via the SMEMA

interface.

The fixed transport side can

be located on the left or right

for both the dual conveyor

and the single conveyor.

With this conveyor, the fixed

side can be easily switched

from right to left or vice

versa.

Movement and clamping of

the PCBs are monitored and

controlled by sensors. When

the board has reached the

placement area and passed

the light barrier, it is braked.

A laser light barrier deter-

mines the position of the

board. As soon as the circuit

board has reached its target

position, the conveyor belt is

stopped and the board is

clamped from the underside.

The placement process then

starts immediately.

PCB Conveyor

Single Conveyor

Technical Data for the Single Conveyor

*) With PCB widths > 450 mm make sure that the peripheral modules are also able to process these widths.

Stationary conveyor side Right or left

PCB format

Standard (length x width)

"Long board" option

50 x 50 mm² to 450 x 508 mm²

50 x 80 mm² to 610 x 508 mm²

PCB thickness

Standard 0.3 to 4.5 mm (± 0.2 mm)

(thicker PCBs on request)

Max. PCB warpage Up: 6 mm - PCB thickness

Down: 0.3 mm + PCB thickness

PCB weight max. 3 kg

Clearance on PCB underside

Standard

Option

25 mm ± 0.2 mm

max. 40 mm ± 0.2 mm

Component-free PCB handling edge 3 mm

PCB changeover time < 2.5 s

PCB positioning accuracy ± 0.5 mm

PCB transport height 830mm ± 15mm (standard)

900mm ± 15mm (optional)

930mm ± 15mm (optional)

950mm ± 15mm (SMEMA: optional)

Type of interface SMEMA / SIEMENS

Ink spot recognition possible

Automatic width adjustment possible

Asynchronous conveyor mode

Synchronous conveyor mode

PCB Conveyor

Flexible Dual Conveyor

Description

The PCB dual conveyor can

greatly increase throughput

with shorter down times -

depending on the placement

program. It allows two PCBs

to be carried simultaneously

(synchronously) or alternate-

ly (asynchronously) through

the placement machine.

In asynchronous mode, only

one PCB in a transport track is

processed. At the same time,

another PCB in the second

transport track is moved into

the placement position. This

saves the full conveying time

of one PCB, thus considerably

increasing performance, par-

ticularly for PCBs with a short

cycle time. The placement

process starts as soon as one

PCB is transported into the

processing area.

In synchronous mode, two

PCBs are moved into the

placement position at the

same time. They are pro-

cessed as a common panel.

In this way, the top and bot-

tom of a PCB can be pro-

cessed on a single line. The

proportion of non-productive

time is reduced as two circuit

boards are always conveyed

simultaneously.