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TECHNI CAL REFEREN CE MECH ANICA L DETAIL Chapter Issue 8 Dec 02 ProFlow Manual 1.19 Rechargeable T ransfe r Head The rechargeabl e transfer head option is fully c om pati ble with t he ProFlo w hardware and of fers the …

TECHNICAL REFERENCE

MECHANICAL DETAIL

1.18 ProFlow Manual Chapter Issue 8 Dec 02

Retention System The retention system, is sited on the underside of the transfer head and consists

of:

• Secondary Grid - stainless steel (Single Conditioning Chamber Units only)

• Wipers - 200/300 titanium coated step edged (2 positions)

• Skis - Vulcanized Rubber (2 positions)

• Wiper Retaining Strips (2 positions)

Figure 1-12 Retention System

Maintenance In order to maintain and clean the unit, all items of the retention system can be

easily dismantled. Wipers and skis are inevitably prone to wear over prolonged

use.

300 micron titanium wipers are available where additional ProFlow system

pressure transfer is required. These are available for all transfer head sizes.

For ink/adhesive printing, mylar wipers are available for all transfer head sizes.

A specially designed transfer head maintenance stand is supplied with ProFlow

to be used during cleaning and maintenance operations of the retention system.

Information on the removal and replacement of these items is detailed in the

Consumable Replenishments chapter of the machine manual.

Wiper

Secondary Grid (Stainless Steel)

Wiper

Wiper Retaining Strip

Ski

Transfer Head Inverted

Note

Single conditioning unit

type transfer head.

TECHNICAL REFERENCE

MECHANICAL DETAIL

Chapter Issue 8 Dec 02 ProFlow Manual 1.19

Rechargeable

Transfer Head

The rechargeable transfer head option is fully compatible with the ProFlow

hardware and offers the alternative of using ProFlow without changing the

format new material is supplied in, ie material not in ProFlow cassettes can still

be used with ProFlow.

Elements of the rechargeable transfer head comprise:

• Conditioning Chamber (single or dual chamber)

• Diaphragm Retainer

• Diaphragm

• Filling Ports (3 in number, 1 for 150mm transfer head)

• Retention System

• Cover

• Recharging Nozzles (2 in number)

Figure 1-13 Rechargeable Transfer Head

The rechargeable transfer head is constructed in much the same way as the

cassette transfer head. The main difference being that a diaphragm, held in

position by a diaphragm retainer, replaces the cassette. The transfer head is

fitted to the pressure mechanism unit in the same way as the cassette transfer

head unit, (Cassette Transfer Head section of this chapter refers).

Print material is initially filled into the paste chamber through the stainless steel

grid of the retention system (single conditioning chamber units), or the nozzle

system of the dual conditioning chamber type. General recharging is performed

by using the 3 filling ports sited on the front side of the transfer head. The filling

ports are sealed using bayonet connector caps.

NOTE

For detailed procedures of print material filling refer to the Consumable Replen-

ishments chapter of the machine manual or the ProFlow Best Working Practices

guide (DEK Part No. 171280).

Filling Port

Bayonet Cap

Diaphragm

Diaphragm Retainer

Recharging Nozzles

Filling Port

Bayonet Cap

Filling Port

Bayonet Cap

Transfer Head (Showing Diaphragm)

TECHNICAL REFERENCE

MECHANICAL DETAIL

1.20 ProFlow Manual Chapter Issue 8 Dec 02

Recharging Recharging the rechargeable transfer head is carried out using the following

standard cartridge:

• 'Semco' type - 500g or 1kg sizes

NOTE

Maximum cartridge diameter should not exceed 43.6mm

These cartridges are utilized by using either of the following:

• Manual 'Mastic' Gun

• Pneumatic Gun (optional)

NOTE

When using a 500g cartridge, an adaptor (supplied) is fitted between the

cartridge and rear of the gun.

WARNING

SOLDER PASTE AND SOLVENTS. WHEN USING OR HANDLING ANY SOLDER

PASTE OR SOLVENT FORMULATION THE MANUFACTURERS’ RECOMMEND

SAFETY PRECAUTIONS MUST BE STRICTLY ADHERED TO.

Manual Mastic Gun The standard cartridge, as listed above, can be fitted to a general purpose

mastic gun as shown in the Mastic Gun and Cartridge figure.

Figure 1-14 Mastic Gun and Cartridge

NOTE

For detailed procedures of print material filling refer to the Consumable Replen-

ishments chapter of the machine manual or the ProFlow Best Working Practices

guide (DEK Part No. 171280).