User Manual - SIPLACE Glue Feedeer.pdf - 第20页

2 General 2.2 Module Description 20 User Manual SIPLACE Glue Feeder 05/2020 2.2.8 Settings Table The following table should help you to find the optimum Glue Feeder setting for your requirements. Die to the various diffe…

2 General

2.2 Module Description

User Manual SIPLACE Glue Feeder 05/2020 19

2.2.7 System Requirements and General Restrictions

Preconditions

The Glue Feeder can only be used on SIPLACE machines with the station software from 706.1 and

in SIPLACE Pro from version 10.1 with the X Feeder interface.

Furthermore, the machine must be fitted with a connection to the safety circuit and a connection to

the compressed air supply. The following retrofit sets are available for fitting the required items:

●

Retrofit set Glue Feeder SX12 / DX12, item no. 03091006-xx

●

Retrofit kit for Glue Feeder SX4 / DX4, item no. 03091007-xx

●

Retrofit kit for Glue Feeder X-Series, item no. 03091008-xx

Restrictions

A gantry can only work with one Glue Feeder.

The Glue Feeder is not designed for use of

●

Solder paste

●

Anaerobic curing glues (such as superglue)

●

UV-curing adhesives

When using UV-curing adhesives, the user is responsible for ensuring that the nozzle opening

of the glue is not exposed to UV light.

Radiation with UV light can lead to unintentional curing of the glue in the nozzle.

●

Transparent adhesive

In some cases, it might not be possible to inspect transparent (clear) adhesives with the Vis-

ion system.

Other restrictions

●

The jet valve must not dry out i.e. be operated without adhesive.

●

Bridging the safety circuit is prohibited.

●

The Glue Feeder may only be cleaned using the cleaning agents prescribed by the glue man-

ufacturer or ASMAS.

●

The programming of glue dots which exceed the diameter of the component at any point is

prohibited (risk of contamination!)

●

When applying glue to narrow edges – even when these are within the component body - only

dispense glue dots which have been adjusted accordingly in their size, otherwise there is a

risk of glue dot division and uncontrolled spurting away of glue at the sides.

●

MELF and SOD (glass diode) components

Due to their round bodies, MELF and SOD (glass diode) components are in principle not suit-

able for glue application. The round body shape poses an increased risk of placement head

contamination. We therefore recommend that these components are not glued or only glued

after thorough assessment of the risks.

2 General

2.2 Module Description

20 User Manual SIPLACE Glue Feeder 05/2020

2.2.8 Settings Table

The following table should help you to find the optimum Glue Feeder setting for your requirements.

Die to the various different adhesives this table can not be seen as exhaustive and is only intended

as an overview data based on experience.

Pressure

jet valve

Pressure at

cartridge

Plunger setting

in mm

Temperat-

ure

(heating)

Diameter

of nozzle

Smaller

glue dots

>0.6

Larger

glue dots

<0.6

Avoid

satellite form-

ation

<0.6

Avoid

glue residues

on the nozzle

>0.6

2.2.9 Setting the Jet Plunger

NOTICE

Increased wear when pressure is higher

The jet plunger is factory set to 60N (corresponds to 0.6mm plunger setting). This setting

allows the SIPLACE Glue Feeder to process common epoxy resin-based SMD adhesives

reliably and in high quality.

After changing this setting, you may need to adjust the characteristics at the station.

Please note that higher settings (>60N) will lead to increased wear of the jet plunger and

particularly to the dispenser nozzle.

We recommend that you check the plunger setting in the following cases:

●

General check of factory setting to 0.6 mm

●

Same setting when using multiple Glue Feeders at your site

●

Optimization of glue dot quality

General check of factory setting to 0.6 mm

If the quality of the glue dots should deteriorate, despite regular maintenance, and if this can not be

remedied with the temperature and pressure settings, the plunger setting can be checked using the

plunger measuring system "Measuring system - plunger adjustment", item no. 03126592-01.

Checking and setting of the jet plunger is described in the service manual for the Glue Feeder item

no. 00197278-xx, chapter "Replacing Spare Parts", in the section about "Jet Valve P-Dot".

Same setting when using multiple Glue Feeders at one site

To avoid differences in the size and quality of the glue dots between the individual Glue Feeders,

the Glue Feeders can be checked with the plunger measurement system and adjusted, if neces-

sary.

2 General

2.2 Module Description

User Manual SIPLACE Glue Feeder 05/2020 21

Optimization of glue dot quality

If you increase the plunger setting >0.6mm (>60N ), this also increases the spring pre-tension in

the jet valve. The consequence of this is that the glue dot is dispensed with more power. This can

lead to improvements when using adhesives which have a high viscosity.

If you increase the plunger setting, less adhesive flows into the dispenser nozzle between the indi-

vidual "shots". This means that, although the number of shots remains the same, a lower volume of

adhesive is applied to the component. Depending on the viscosity of the glue and the type of

component surface, this might cause the glue dot to have a wider diameter. The cause for this is

that the glue is dispensed with greater power and therefore at a higher speed. This change must be

taken into account when setting the characteristic line, in relation to the glue dot check by the Vis-

ion system.

Furthermore, a higher plunger setting will lead to flatter glue dots, if the number of shots remains

the same. Check whether the contact between the glue dot and the board is present and increase

the number of shots where necessary.

We recommend that the plunger setting only be increased as far as really needed. Changes to the

plunger setting are only advisable if you are using other glues than those recommended by us. Ob-

serve in particular the information about increased wear of the jet plunger and at the dispenser

nozzle.

If you reduce the plunger setting <0.6mm (<60N), the characteristics will change in the opposite

direction to that described above. To make sure that the shape of your glue dot is acceptable, you

should not set the jet plunger to <0.2mm (<20N).

The jet plunger setting range is between 0.2mm and 1.5mm (20N to 150N).