Horizon UserManualV6 - 第306页
Paste Removal During continuous printing operations paste residue build up may occur with the same screen in use and with the squeegee option fitted. This build up can affect the print quality of the print process, ie pa…
4. Load paste onto screen.
5. Close the front printhead cover.
6. Press the System button.
7. Press Continue (F1).
Continue
8. Press Exit (F8).
Auto
Dispense
Manual
Load
Print
Directn
Exit
Software Version 6 User Manual 9.5
CONSUMABLE REPLENISHMENTS
PASTE LOADING
Paste Removal During continuous printing operations paste residue build up may occur with the
same screen in use and with the squeegee option fitted. This build up can affect
the print quality of the print process, ie paste in apertures, paste ‘tramlining’ on
the screen and residue on the squeegees.
Before loading paste the operator should ensure that any residue is cleaned off
the screen and squeegees.
To clean the screen effectively, it is recommended that the operator removes the
screen from the machine during this operation (see Operator Manual - Product
Changeover).
Remove paste from the screen and squeegees with a spatula and place in a
suitable container. Smear deposits are removed using a suitable cleaning cloth
dampened with a suitable solvent.
NOTE
Waste paste and contaminated cleaning cloths are to be disposed of in
accordance with local authority regulations.
9.6 User Manual Software Version 6
CONSUMABLE REPLENISHMENTS
PASTE LOADING
WARNING
RECOMMENDED SOLVENTS. ANY SOLVENTS USED MUST
COMPLY WITH LOCAL ENVIRONMENTAL GUIDELINES. DE
K
RECOMMEND USING SOLVENTS THAT ARE ENVIRONMENTALL
Y
FRIENDLY, IE CFC FREE AND WATER BASED. SOLVENTS USED
MUST HAVE FAST EVAPORATION RATES AND FLASHPOINT
SPECIFICATIONS GREATER THAN 39 C.°
WARNING
SOLDER PASTE AND SOLVENTS. WHEN USING OR HANDLINGAN
Y
SOLDER PASTE OR SOLVENT FORMULATION THE
MANUFACTURERS' RECOMMENDED SAFETY PRECAUTIONS
MUST BE STRICTLYADHERED TO.
WARNING
PROTECTIVE CLOTHING. APPROVED PROTECTIVE CLOTHIN
G
SHOULD BE WORN BY SOLDER PASTE AND SOLVENT HANDLERS
AT ALL TIMES TO ELIMINATE FUME INHALATION, EYE
CONTACT, SKIN CONTACTAND INGESTION.
Auto Dispense An alternative to manual loading of solder paste to the screen is given with the
provision of an automatic paste dispenser. This is mounted to the rear of the
print carriage.
The paste dispenser uses either a 1 Kg or 500g cartridge. The 500g cartridge
requires the fitting of a sleeve which is an option. This enables any loading of
paste to be carried out without the need for the operator to handle the paste.
A slug inside the cartridge, travels down the cartridge as the paste is used. A
proximity sensor fitted to the side of the dispenser detects the metal content of
the paste. When the cartridge is empty the sensor initiates a ‘Print Medium
Low. Please Replenish’ warning window to the operator.
Programming into a
Product File
The paste dispense parameters can be setup when editing a product file for a new
product, although it may be more convenient to set these after the product has
been run for a while and paste requirements have been determined.
The parameters to be edited that affect the operation of the paste dispenser are:
Paste Dispense Rate:
This determines the frequency of the cycling of the paste dispenser. The setting
is gauged by running the product and noting the number of prints before paste
replenishment is required. This can be set to any number between 0 to 100 in
increments of 1.
Paste Dispense Speed:
This determines the speed at which the paste dispenser travels across the screen
and hence the amount of paste which is dispensed. This parameter needs to be
set in conjunction with the Paste Dispense Rate. This can be set to any number
between 10mm/s and 100mm/s in increments of 1mm/s.
Software Version 6 User Manual 9.7
CONSUMABLE REPLENISHMENTS
PASTE LOADING