Table 3-5 E-Multi Injection Unit Safety Hazard Details
Hazard Type Potential Hazards
Mechanical Hazards
Body Crushing
Hazard
End of motor moves back during operation. A hazard may exist between
the end of the injection unit motor assembly and a nearby solid obstacle.
Ensure proper guarding as part of integration.
During installation of the E-Multi injection unit onto a mold, a crushing
hazard exists between the adapter plate and the mounting surface of the
mold.
A crushing hazard exists between nozzle and mold melt inlet during
carriage forward motion.
Shearing Hazard A possible shearing hazard exists between the edge of the injection guard
and the injection housing during injection.
Cutting Hazard For horizontally-mounted machines with a high center line height, a
person's head could hit the end of the injection unit causing a cut. Ensure
proper guarding.
Entanglement Hazard
(Belt Drive)
A person could become entangled in the drive belt or screw of the injection
unit. Always keep guards in place.
Entanglement Hazard The open feed port could present an entanglement hazard. Always keep
guards in place.
Cutting or Severing
Hazard
For units equipped with a servo carriage, a severing hazard may exist
between the barrel assembly and support beam when the carriage moves
forward and the hard stop extension in the trunnion slot is not installed.
High Pressure Fluid
or High Temperature
Molten Material
Splashing Hazard
High pressure uid or high temperature molten material may spray from
the nozzle. Always use personal protective equipment (PPE).
High pressure material or high temperature molten material may spray
from a blocked feed port. Always use personal protective equipment.
Loss of Stability Injection unit could fall over if improperly installed on stand.
Injection unit could fall over if transported on stand castors.
Injection unit could fall from top of mold if not properly secured.
Injection unit could fall over if stored vertically on the oor or a table
without adequate support.
Trip Hazard Controller cables are a tripping hazard on the oor between the controller
and the press or E-Multi injection unit.
Stored Energy There could be stored energy in compressed material which is not
released when the machine is powered o.
When installed vertically and powered o, there is stored energy in the
injection assembly which could move downwards.
Electrical Hazard
Contact of Persons
with High Voltage
Heaters, servo motors and electrical components in the controller could
come in contact with a person. Do not remove covers when energized.
Thermal Hazards
Possible Contact of
Persons with High
Temperature Material
The injection barrel could result in burns.
Melted material during routine purging could cause burns.
Hot material or gases could be released from the feed port when clearing
a blockage.
The electric servo motors could overheat presenting a hot surface which
could cause burns to someone touching it.
3.11 E-Multi Injection Unit Safety Hazards
3-16
© 2020 Mold-Masters (2007) Limited. All Rights Reserved.
SAFETY
E-Multi Controller User Manual
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