Micron Technical Reference V9 Volume 1 - 第276页

PROFLOW MODULE OVERVIEW 11.2 Technical Reference Manual Chapter Issue 2, Aug 14 The ProFlow mechanism is driven backwards and forwards across the stencil by the print carriage a pplying printable material directly onto t…

PROFLOW MODULE

OVERVIEW

Chapter Issue 2, Aug 14 Technical Reference Manual 11.1

CHAPTER 11 PROFLOW MODULE

OVERVIEW

Item Description Item Description

1 ProFlow Printhead Mechanism 3 ProFlow Transfer Head

2 ProFlow Pressure Mechanism 4 Print Carriage

PROFLOW MODULE

OVERVIEW

11.2 Technical Reference Manual Chapter Issue 2, Aug 14

The ProFlow mechanism is driven backwards and forwards across the stencil

by the print carriage applying printable material directly onto the stencil. This

alleviates the need for squeegees and a paste dispenser.

The ProFlow mechanism is raised and lowered, to the stencil by means of a

stepper motor, applying a downward force directly onto the stencil providing a

positive seal between the transfer head and stencil. This eliminates leakage of

print material above the stencil.

Paste pressure (pneumatic), is applied to the piston crosshead exerting a force

onto the print material which, in turn, forces print material into the ProFlow

conditioning chamber and into the stencil apertures.

As the unit moves across the stencil the trailing wiper, within the transfer head,

lifts the print material from the stencil surface, clearing the stencil of print

material and creating a rolling movement of material within the conditioning

chamber.

Figure 11-1 ProFlow Cross Section (with cassette option)

ProFlow Pressure

Mechanism

Transfer

Head

Stencil

Board

ProFlow Movement (Y Axis)

Wiper

Piston

Crosshead

Pneumatic

Pressure

System Pressure

Print Material

Side Chambers

Cassette

Nozzle

Cassette

Plunger

PROFLOW MODULE

OVERVIEW

Chapter Issue 2, Aug 14 Technical Reference Manual 11.3

The sensor used to detect paste is:

• ProFlow Paste Level Sensor - Giant Magneto resistive (displays to the

operator a percentage of paste remaining (time-to-go))

The sensor is fitted to the left hand side pressure mechanism pneumatic

actuator, as shown in the figure below.

Figure 11-2 ProFlow Sensor and Stepper Motor Locations

View on Rear of ProFlow Printhead Mechanism

ProFlow Home Sensor

Drive Belt

Stepper Motor

View on Front of ProFlow Pressure Mechanism (cover removed)

Pneumatic Actuator

Paste Level Sensor