Specification-SIPLACE-S25HM-eng - 第15页

13 PCB Axle Conveyor belt Clamp Description S-25 HM (Type 2) features a new tec hn iqu e for c onv eyo rs. T he PCB is clamped from the bottom to the top side of the conveyor. Thi s of- fers seve ral advantages: § Higher…

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 machine.

In the asynchronous mode of

transport a PCB is moved into the

machine in “slack time” while an-

other of the same PCB 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 placed on the PCB.

PCB Conveyor:

Dual Conveyor

Technical Data

PCB dimensions See table on page 3

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

Asynchronous and Synchronous Transport on Dual Conveyor

Transport mode Asynchronous Synchronous

View

Placement program

per conveyor

same or different same or different

PCB width

per conveyor

same same or different

Ink spot recognition possible not possible

Automatic width adjustment possible not possible

Dual Conveyor with Asynchronous Transport

PCB Transport

Direction

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