D4操作手册.pdf - 第20页

20 Comp onent Fe eding Dummy Feeder Modules Dummy feeder m odules for compon ent change over tables from the SIPL ACE D4 The following dummy feeder modul e variants are av ailable for component change over tables from th…

Component Feeding

Bulk Case and Vibratory Stick Feeder Modules

Technical Data

Bulk case feeder modules

Packaging form Bulk case

Feeder rails Chip 0402, CO height: 0.35 mm

Chip 0402, CO height: 0.50 mm

Chip 0603, CO height: 0.45 mm

Chip 0603, CO height: 0.80 mm

Chip 0805, CO height: 0.45 mm

Chip 0805, CO height: 0.60 mm

Chip 0805, CO height: 0.85 mm

Chip 0805, CO height: 1.25 mm

Micro-Melf: 1.05 ± 0.05 mm

Mini-Melf: 1.4 ± 0.1 mm

Location 1 location for 2 different com-

ponent types

Vibratory stick feeder,

type 3

with control circuit

Number of tracks and width 3 x 9.5 mm

2 x 15 mm

1 x > 15 mm

1 x 30 mm

Location 1 location

a) Fiducial for feeder module position recognition

Description

The SIPLACE bulk case feeder

module processes bulk cases

on two tracks. It feeds rectan-

gular and round, passive

components. The PCB maga-

zines (bulk cases) are simply

replaced for refilling - with-

out stopping the machine.

The module essentially con-

sists of the basic element plus

two feeder rails and PCB mag-

azines to suit the component

type and height. The compo-

nents are separated and fed

along the rails by compressed

air.

The principle of the fixed

component table has proven

its worth, even when bulk

cases are used: the vibrations

that can occur with other

placement machine concepts

can have a highly detrimental

effect on the component

quality due to abrasion, for

example.

Even with stick magazines,

the stationary component

supply has significant advan-

tages: the universal vibratory

stick feeder can be topped up

during placement.

Bulk case feeder module

Vibratory -

stick feeder, type 3

Component Feeding

Dummy Feeder Modules

Dummy feeder modules for component changeover tables

from the SIPLACE D4

The following dummy feeder module variants are available for

component changeover tables from the SIPLACE D4:

SIPLACE dummy feeder module for 1 location

SIPLACE dummy feeder module for 6 - 10 locations

SIPLACE dummy feeder module for 11 - 20 locations

Dummy feeder module for 1 location

Dummy feeder module for

6 - 10 locations

Dummy feeder module for

11 - 20 locations

Danger

To ensure that your SIPLACE

placement machine runs

safely, a feeder must be

assigned to every location on

the component changeover

table. If you do not have

enough feeder modules, then

you should use dummy feeder

modules as space holders.

Vision Sensor Technology

PCB Position Recognition

Technical data

PCB fiducials

Local fiducials

Library memory f.

recognition of

bad panels

up to 3 (subpanels and multiple

panels)

up to 6 for the Long board option

(Optional PCB fiducials are output by

the optimization.)

up to 2 per PCB (may be of different

type)

up to 255 fiducial types per subpanel

Image analysis Edge detection method (Singular fea-

ture) based on grayscale values

Lighting method Front lighting

Fiducial recogni-

tion time

0.1 s

Field of vision 5.78 x 5.78 mm

Camera’s field of view

Pixel

Ink spot, e.g. square

Evaluation window

Geometrical Alignment

The size of the fiducial is pro-

grammed at the station com-

puter. From this time on form

and size of the fiducial is

defined and known.

With these data the PCB

vision module is able to

search and recognize the

fiducial at the predefined

position on the PCB or ceram-

ic substrate without further

assistance. For this reason it

places several small evalua-

tion windows at the assumed

border of the fiducial. Within

these evaluation windows

the vision system looks for

contrast transitions between

bright and dark. After finding

such contrasts the actual

position of the fiducial can be

assigned by comparison with

the predefined – and thus

known – shape and size.

The analysis operations can

be used to determine any off-

set with respect to the DE-

SIRED position in the X and Y

directions and the angular

position. Alternatively, a fidu-

cial may be taught as a pat-

tern.

Additional functions of the

PCB vision module are recog-

nition of the position of the

feeder modules and ceramic

substrate (optional) and

recording of the machine

data including mapping.

The bad board detector

(GOOD/SCRAP scan) is also

moved over the ink spot

using the PCB vision module.

Description

SIPLACE has a number of

vision modules and a central

vision system to evaluate the

recorded image data ensur-

ing high placement accuracy.

At the machine's X-gantry

the PCB vision module is

mounted. It is used to find

the PCB's positioning-offsets

within the conveyor system.

This vision module is also

required to measure the

machine origin and/or the

feeder module positions on

one side of the table.

Each vision module consists

of a single CCD camera with

integrated lighting and

optics. The offsets in the

position of the PCBs are

determined with the help of

at least two but generally

three reference fiducials on

the PCB. When the PCB

arrives at the placement area

the positioning system with

its PCB vision module moves

to the programmed fiducial.

The edge detection method

allows to choose predefined

fiducials from a menu (e.g.

cross, circle, square).