Specification_SIPLACE_F5_eng.pdf - 第11页

10 Description On SIPLACE F 5 the in- line con- veyor system guarantees a qui ck adjustment to new PCB widths. The change is made either at the station via menu funct ion or from the line computer via the aut o- matic wi…

Description

Full Flip Chip handling capability on

the part of the SIPLACE F

is en-

sured by a flux dispenser installed

directly next to the revolver head.

Immediately before the placement

head places the Flip Chip, the

mounting location on the PCB is

wetted with low-viscosity flux by

means of a dispensing needle.

The flux dispenser option essen-

tially comprises one stepping mo-

tor with piston, injector and valve

to change the operating mode (fill /

dispense injector) plus one storage

tank. The stepping motor positions

the piston over the storage tank to

be filled or over the Flip Chip

mounting location on the PCB for

emptying.

The purpose of a programmable

waiting time until PCB transport is

to allow the low-viscosity flux suf-

ficient time to dry so that the Flip

Chip(s) will not shift position while

the PCB is being moved out. A

new PCB conveyor control with

adjustable acceleration and delay

ramps makes programming the

waiting time largely superfluous.

Placement Heads:

Flux Dispenser for Full Flip Chip Capability (Option)

Technical Data

Programmable amount 2 µl to 100 µl

Smallest application incre-

ment

1 µl

Content of syringe 1 ml

Content of flux reservoir 100 ml

Volume to be applied at the

mounting location

Varies by Flip Chip size as well as wetting

properties of flux and substrate material

Flip Chip down holding time

after placement 0 to 5 s

Increment down holding

time

0.01 s

Minimum waiting time prior

to PCB transport 0 to 40 s

Increment waiting time 1 s

Dispensing cycle time 1.5 s including positioning

Rinse cycle 1 to 10 x contents of syringe

Filling level 1 Warning

Filling level 2 Empty (causes machine stop)

Accuracy of dispenser

needle positioning

± 0.05 mm

Description

On SIPLACE F

the in-line con-

veyor system guarantees a quick

adjustment to new PCB widths.

The change is made either at the

station via menu function or from

the line computer via the auto-

matic width adjustment unit. Ce-

ramic substrates are also trans-

ported and, if necessary, fastened

in place via the optional ceramic

substrate centering unit.

As standard, the SIPLACE place-

ment systems are available with a

single conveyor system.

PCB Conveyor:

Single Conveyor

Technical Data

PCB dimensions

50 x 50 mm to 460 x 460 mm

(optional 460 x 508 mm)

PCB thickness 0.5 to 4.5 mm

Max. PCB warpage

Top: 4.5 mm - PCB thickness

Bottom: 0.5 mm + PCB thickness

PCB underside clearance

Standard: 25 mm,

Option: max. 40 mm

PCB conveyor height

830 ± 15 mm (Standard)

900 ± 15 mm (Option)

930 ± 15 mm (Option)

950 ± 15 mm (Option) SMEMA

Fixed conveyor edge On right (standard); on left (option)

Type of interface Siemens (standard); SMEMA (option)

Component-free PCB

handling edge 3 mm

PCB changing time 2.5 s

PCB Conveyor

PCB

Transport Direction

Description

Thanks to reduced non-productive

times the dual PCB conveyor can

substantially increase the through-

put, depending on the program. It

makes it possible to transport two

PCBs through the placer simulta-

neously (synchronous) or alter-

nately (asynchronous).

In the synchronous type of trans-

port it is possible, for example, to

finish the top and bottom of the

PCB in a single line without using

cluster technology.

In the asynchronous type of trans-

port a PCB is moved into the

placer in “slack time” while an-

other of the same type is being

populated. The non-productive

time caused by the PCB transport

is therefore completely eliminated.

The increase in placement speed

to be anticipated is between 10

and 30%, depending on the com-

ponents to be placed on the PCB.

The client can switch between

asynchronous and synchronous

dual conveyor with little effort. The

optional ceramic substrate center-

ing is possible, but the PCB bar

code reading process is not.

PCB Conveyor:

Dual Conveyor

Technical Data

PCB dimensions 50 x 50 mm to 460 x 216.5 mm

Fixed conveyor edge Right (standard), left (option)

Placement program per conveyor

Synchronous: same or different

Asynchronous: same

PCB width

per conveyor

Synchronous: same or different

Asynchronous: same

Ink spot recognition

Synchronous: not possible

Asynchronous: same

Automatic width adjustment

Synchronous: not possible

Asynchronous: possible

Asynchronous Dual Conveyor

Asynchronous Synchronous