D-serie level 1 EN - 第118页

P&P and TWIN Heads Overview TWIN Head Vacuum Generator S tuden t Guide Advanced Level 1 SIPLACE D-Series P&P and TWIN Heads EN 05/2007 7-4 7.1.3 TWIN Head V acuum Generator 7-1: Vacuum generator The vacuum genera…

P&P and TWIN Heads

Overview – Twin Head in D-Series Overview

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 P&P and TWIN Heads

7-3

7.1.2 Overview – Twin Head in D-Series

As the name implies, 2 identical placement heads have been combined to form a single unit. The TWIN

Head in the form of these 2 segments is mounted on the D3 machine.

Nozzle changer (NC) for P&P heads

Placement head D4 D3 D2 D1 D1 single head

Twin Head ---- Yes, complete

with 2 segments

---

P&P module. ---- Yes, equals one

TWIN segment

Yes or

alternatively

C&P head

High-force head ---- Option possible --- No

Controlled via ---- Processor on

head interface

--- Processor on gantry head distributor

Electrically

controlled vacuum

generator

---- Analog --- Analog

Version 5 with: ---- Rotary part connection via fixed pipe bracket with silicon tube

---- New Z-axis linear guide

D-axis zero point

correction

---- Mark for

measurement

nozzle to MA

center

---- Remember that the D1 only has PA1

and that therefore the calibration

nozzle mark must point to the output

conveyor!

The two centering pins for the nozzle

pickup point towards the back of the

head!!

Hardware - new features for P&P placement head

Camera D4

with C&P12

D1 fitted

with P&P

module

with C&P12

Standard P&P -X- --- SST33 ---

Standard P&P -D --- SST36 option SST33

FilpChip option --- SST25 --- SST25

Camera features for P&P placement head

Assembly D3 D2 D1

NC types TWIN NC 12 magazines in

series X compatibility

--- TWIN NC in 2x5 magazine

arrangement

Dual magazine X compatible --- New (higher X/Y

measurement fiducials and

eccentric fixture)

Single magazine X compatible --- New (higher fiducial and

eccentric fixture)

Nozzle changer features for P&P placement head

P&P and TWIN Heads

Overview TWIN Head Vacuum Generator

Student Guide Advanced Level 1 SIPLACE D-Series

P&P and TWIN Heads EN 05/2007

7-4

7.1.3 TWIN Head Vacuum Generator

7-1: Vacuum generator

The vacuum generator automatically controls the

vacuum, air blast and the zero balancing position

(middle position-->no vacuum and no air blast) for

the segments, with the aid of an iron core and

inductor.

Legend

1. Compressed air input

2. Exhaust to the silencer and cooling for the X-

linear motor

3. Output vacuum - vacuum is passed through

the D-axis motor shaft and then to the nozzle.

7-2: Principle of the vacuum generator

Legend

1. Compressed air input

2. Venturi nozzle

3. Plunger (iron core)

4. Plunger drive (inductor)

5. Exhaust to silencer

6. Vacuum air blast output

7-3: Filter for the vacuum system (TWIN segment version 03 shown as

example)

Legend

1. Filter for the vacuum system on the TWIN

Head.

The filter is mounted on the return unit and used as

an attenuator to control the vacuum. The filter, with

the relevant volume of metal hose, reduces

oscillation of the vacuum generator and

guaranteed an accurate vacuum and air blast

supply. The filter is serviced at regular intervals,

which must be adhered to (see maintenance

guide).

P&P and TWIN Heads

TWIN Head Placement Principle TWIN Head Pickup and Place Cycle

Student Guide Advanced Level 1 SIPLACE D-Series

EN 05/2007 P&P and TWIN Heads

7-5

7.2 TWIN Head Pickup and Place Cycle

7.2.1 TWIN Head Placement Principle

During the PCB transport time, the gantry waits at the theoretical fiducial position, to perform board

centering (and inkspot recognition) after PCB clamping. With the " Whispering down the machine"

option, gantry 3 only evaluates 2 fiducials.

The TWIN Head collects one component with module 1 and one component with module 2. These

components are then centered with the IC camera (FC camera) and are placed.

7.2.2 Preparations for Component Pickup (Module1)

Legend

1. Z-motor

2. D motor

 PCB position recognition and ink spot

recognition is performed.

 The X and Y gantry axes move to the feeder

track or pickup position.

 During gantry positioning, the D-axis rotates to

the pickup angle.

 Communication with component trolley -

feeder ready - opens the feeder pickup

window.

NOTE:

To achieve greater placement accuracy, the offset between the nozzle and the IC camera is

checked after a defined period, with the help of a fiducial. The fiducial is on a metal plate, which

is fixed between the stationary camera and the machine frame.