SIPLACE 80 F4_EN - 第13页

12 Description Due to the increasing use of c e- ramic substrates in Fli p Chip tech - nology the demands for precis e substrate centering are growi ng. The optical an d mechanic al ce- ramic substrate centering u nits o…

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

Description

Due to the increasing use of ce-

ramic substrates in Flip Chip tech-

nology the demands for precise

substrate centering are growing.

The optical and mechanical ce-

ramic substrate centering units on

the SIPLACE 80 S-20 and SIPLACE

80 F

placement systems satisfy

these demands.

Like the PCB vision module, opti-

cal centering is conducted with the

aid of reference marks (fiducials).

Depending on the contrast ratio

the machine activates the standard

lighting or the oblique lighting con-

tained in the option:

On ceramic and CM blue light

(Item No 116172).

On flexible PCBs using vision

module without IF-filter infrared

light (Item No 116173).

In certain cases, mechanical cen-

tering is required, e.g., when

placement is to continue to the

substrate edge, when handling of

the edges of the substrate is to be

particularly gentle, or when sub-

strates are scribed. In this gentle,

bounce-free procedure, the sub-

strate is fixed in place in the Y-

direction between a stop rail and a

rocking lever pneumatically cen-

tered in the X-direction.

PCB Conveyor:

Ceramic Substrate Centering (Option)

Technical Data

Substrate dimensions 2" x 2" to 4" x 7"

Substrate thickness 0.5 to 1.5 mm

Substrate model

Unscribed (no difficulty)

Scribed (after test)

Contact in conveyor 2.5 mm

Optical centering:

Field of view of the PCB

vision module

Type of lighting

with light-colored pastes

with dark pastes and short di-

stance to neighboring structu-

res (>1 mm)

5.7 x 5.7 mm

PCB vision module (standard)

Oblique lighting (option)

Fiducal mark criteria

See PCB vision module position reco-

gnition

Mechanical centering

X-/Y-centering accuracy

± 0.07 mm / 4 σ

PCB underside clearance 12 mm

Compressed air connection 5.5 bar

Optical Centering via Mechanical Centering

PCB Camera

Movable

Transport Side

Y-Fixation

Fixed

Transport

Side

Fixed

Transport

Side

Stopper

Ceramic Substrate

Movable

Transport Side

X-Center-

ing

Restrictions for Bar Code Reading

of PCB Sizes 460 x 460 mm

Description

e e

e c

The SIPLACE PCB bar code scan-

ner supports the flexible produc-

tion of SMD products and en-

hances placement reliability. It

recognizes all code types in gen-

eral use for industrial applications.

The laser scanner reads the bar

code label on the top and/or bot-

tom of each PCB moving during

transport. On the basis of the bar

code information the line computer

automatically selects the correct

placement program from the pre-

viously prepared bar code assign-

ment list and sends it to the sta-

tion. This procedure is performed

in slack time while a PCB already

in the placer is being populated. If

a number of PCBs with the same

bar code are moved in one after

the other, the program is only

transferred the first time. The fol-

lowing preconditions apply for all

products which are to be manufac-

tured with the aid of the PCB bar

code:

identical component set-up at

the individual machines in the

line

all PCBs of same width.

The bar code filter can be utilized,

if only certain information con-

tained in the bar code is relevant.

l l

l c

With a dual conveyor, the sole

purpose of the PCB bar code is to

relay the bar code via a GEM inter-

face. This is imperative for utiliza-

tion. Automatic placement pro-

gram supply is not possible.

PCB Conveyor:

PCB Bar Code for Production-Controlled Manufacturing (Option)

Technical Data

Max. PCB size

Single conveyor

Standard: (L x W) to 460 x 460 mm

Optional: (L x W) to 508 x 460 mm

(same width in all jobs of a run)

Bar-code-free PCB edge

3 mm on left and right parallel to PCB

transport direction (the additional restricti-

ons shown in figure at the bottom apply

for scanning the bar code from above)

Label dimensions

Stroke width: W: 0.19 < W ≤ 0.3 mm

(corresponds to high + medium density)

Stroke length: ≥ 4 mm*

Length of scanning window: ≤ 90 mm

Label alignment on PCB**

Parallel or at right angles to the PCB

transport direction, preferably next to

fixed conveyor side

Recommended label colors

(contrast ratio > 70%

as per DIN 66236)

Color coding: black, dark green or dark

blue

Background: white, beige, yellow, orange

Code types

Code 39, Code 128 / EAN 128,

Codabar, 2/5 IATA 2/5 industrial,

2/5 interleaved, UPC, EAN,

Pharma Code, EAN Addendum

(more upon request)

Complete bar code

Max. 25 characters

Definition of a bar code filter possible

Safety of the laser scanner

Laser diode 670 nm (red) / 1 mW

Laser protection class 2, degree of protec-

tion IP65

Station and line software from Version 401.xxx

Scan-in/analysis time

Slack time (T ≤ 1 s), as parallel to the pla-

cement of preceding PCB

* This value can only be met if the bar code label on the PCB moves through the bar code scanner at

right angles to the machine’s direction of transport.

** Depending on where the bar code label is located on the PCB, the position of the bar code scanner

can be easily adjusted in the input conveyor belt.

restricted

PCB

Transport

Direction

460