Specification_SIPLACE_S23HM_eng - 第10页

9 Description The demands for a precise sub- strate centering are becoming more stringent due to the increas- ing use of ceramic subst rates in the Flip Chip technology . This challenge is met by the optical and mechanic…

PCB Transport

Direction

Asynchronous

Synchronous

Description

Thanks to the reduced non-

productive times, the dual PCB

conveyor can effect a considerable

increase in the throughput, de-

pending on the program. It enables

the simultaneous (synchronous) or

alternating (asynchronous) trans-

port of two PCBs through the

placement machine.

In the case of the synchronous

type of transport it is possible, for

example, to process the top and

bottom of the PCB without using

the cluster technique.

In the case of the asynchronous

type of transport one PCB can be

moved into the placement ma-

chine during slack time while an-

other one of the same type is be-

ing populated. The portion of non-

productive time caused by the

transport of the PCB is therefore

completely eliminated. The in-

crease in placement speed to be

expected is between 10% and

30%, depending on component

load of the PCB.

Insofar as the customer is con-

cerned, switching between asyn-

chronous and synchronous dual

conveyor entails relatively little ex-

penditure. The optional ceramic

substrate centering is possible, the

PCB bar code mode is not.

PCB Conveyor:

Dual Conveyor

Asynchronous Dual PCB Conveyor

Technical Data

PCB dimensions 50 x 50 mm to 460 x 216.5 mm

Fixed conveyor edge On right (standard); on 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: possible

Automatic width adjustment Synchronous: not possible

Asynchronous: possible

Description

The demands for a precise sub-

strate centering are becoming

more stringent due to the increas-

ing use of ceramic substrates in

the Flip Chip technology. This

challenge is met by the optical and

mechanical ceramic substrate cen-

tering on the SIPLACE S-23 HM

and SIPLACE 80 F

As with the PCB vision module,

the optical centering is conducted

with the aid of reference marks.

Depending on the contrast ratio

the machine activates the standard

lighting or the oblique lighting con-

tained in 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 specific case a mechanical cen-

tering is required, e.g., when

placement is to be to the edge of

the substrate, handling of the sub-

strate edges is to be particularly

gentle or substrates are scribed.

With this gentle, bounce-free ap-

proach the substrate is fixed in the

Y-direction between a stop bar and

a rocking lever. In the X-direction it

is centered pneumatically.

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 problems)

Scribed (after test)

Contact in conveyor 2.5 mm

Optical centering:

Field of view of PCB

vision module

Type of light:

with light pastes

with dark pastes and little

distance to neighboring struc-

tures (> 1 mm)

5.7 mm x 5.7 mm

PCB vision module (standard)

Oblique lighting (option)

Reference mark criteria See PCB Vision Module Position

Recognition

Mechanical centering:

X-/Y-axis centering accuracy

± 0.07 mm / 4 s

Clearance under substrate 12 mm

Compressed air connection 5.5 bar

Optical Centering via Mechanical Centering

PCB Camera

Movable

Transport Side

Y-Fixation

Fixed

Transport

Side

Stopper

Ceramic Substrate

Movable

Transport Side

X-Center-

ing

Fixed

Transport

Side

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 manufac-

ture of SMD products and en-

hances placement reliability. It

recognizes all types of cost in gen-

eral use in industry.

The laser scanner reads the bar

code label on the top or bottom of

each PCB while it is being trans-

ported in. On the basis of the bar

code data the line computer auto-

matic selects the correct place-

ment program from the bar code

allocation list previously prepared

and sends it to the station. Once a

bar code filter has been defined,

only the data in the bar code which

has been marked as being relevant

is compared. This procedure is

performed in slack time while a

PCB already in the machine is be-

ing 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 following preconditions apply

for all products which are to be

manufactured with the aid of the

PCB bar code:

identical component set-up on

the individual machines in the

line

all of the PCBs are the same

width.

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 restric-

tions 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

placement 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

460

restricted