D3操作手册 - 第19页

19 PCB Conveyor Single Conve yor Technical Data for the Single Conveyor S tationary con veyor side Right o r left PCB format Standar d (length x w idth) Wide board configuration Long board op tion Long board option in Wi…

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 sys-

tem 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 con-

veyor is monitored by an in-

tegral control circuit.

The machine 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 of the in-

dividual machines communi-

cate via the SMEMA interface

(optional Siemens 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.

When the board has reached

the placement area and

passed the light barrier, it is

braked. A laser light barrier

determines the position of

the board. As soon as the cir-

cuit board has reached its tar-

get position, the conveyor

belt is stopped and the board

is clamped from the under-

side. The placement process

then starts immediately.

PCB Conveyor

Single Conveyor

Technical Data for the Single Conveyor

Stationary conveyor side Right or left

PCB format

Standard (length x width)

Wide board configuration

Long board option

Long board option in Wide board configuration

50 x 50 mm² to 450 x 460 mm²

50 x 50 mm² to 450 x 508 mm²

50 x 80 mm² to 610 x 460 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

(pass-through height)

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

Bad fiducial detection possible

Automatic width adjustment possible

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

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 while 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, particularly for

PCBs with a short cycle time.

The placement process starts

as soon as one PCB is trans-

ported 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.

With the flexible dual convey-

or, one conveyor track may

spread further than the stan-

dard width of 216 mm in sin-

gle conveyor mode. The

side panels of the second

conveyor track are moved

fully together and the second

conveyor track is disabled.

This allows overwide PCBs to

be processed in machines

with a dual conveyor.