Specification-SIPLACE-S25HM-eng - 第16页

14 Description Two methods of ceramic substrate centering are available: Optical centerin g Optical centerin g Optical centerin g Optical centerin g Like the PCB vision module, opti- cal centering of cerami c substrate i…

PCB

Axle

Conveyor

belt

Clamp

Description

S-25 HM (Type 2) features a new

technique for conveyors. The PCB

is clamped from the bottom to the

top side of the conveyor. This of-

fers several advantages:

§ Higher real placement rate

§ Better PCB recognition (camera

focus point)

§ Shorter PCB change time

§ Easier change of fixed conveyor

edge right/left also in field

§ Quicker learning function, as the

PCB height does not effect the

Z-stroke

The conveyor can be ordered with

a fixed rail on right or left. As stan-

dard the SIPLACE placement sys-

tems are available with a single

conveyor system.

The dual conveyor has another

advantage: It is already prepared

for a retrofit to Flexible Dual

Conveyor mode, which allows the

handling of PCBs with a maximum

width of up to 380 mm. For this

feature SW 505 is required, which

will be available at the beginning

of 2004.

PCB Conveyor:

Single and Dual Conveyor for S-25 HM (Type 2)

Technical Data

Single conveyor See table on page 11

Dual conveyor See table on page 12

Clamping of PCB

Flexible Dual Conveyor

Modus 2: Single Conveyor

Modus 1: Dual Conve

Description

Two methods of ceramic substrate

centering are available:

Optical centering

Optical centeringOptical centering

Optical centering

Like the PCB vision module, opti-

cal centering of ceramic substrate

is conducted with the aid of refer-

ence marks (fiducials). Depending

on the contrast ratio the machine

activates the standard lighting or

the oblique lighting contained in

the option:

§ On ceramic and CM blue light.

§ On flexible PCBs using vision

module without IF-filter infrared

light.

Mechanical centering

Mechanical centeringMechanical centering

Mechanical centering

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

centered in the X-direction.

PCB Conveyor:

Ceramic Substrate Centering (Option)

Technical Data

Substrate dimensions 50 x 50 mm

to 101.6 x 177.8 mm

2" x 2" to 4" x 7"

Substrate thickness 0.5 to 4.5 mm

Substrate model Unscribed (no difficulty)

Scribed (after test)

Contact in conveyor 2.5 mm

Substrate bottom 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

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 machine 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.

PCB Conveyor:

PCB Bar Code for Production-Controlled Manufacturing (Option)

Technical Data

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

protection IP65

Station and line software from Version 502.xxx

Scan-in/analysis time

Slack time (T

≤ 1 s), as parallel to the

placement of preceding PCB

a) 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.

b) 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.

460 460

18.5 3

118

restricted

PCB

Transport

Direction

460