Table 3-1 Safety Hazards
Hazard Area Potential Hazards
Mold Area
Area between the
platens.
See Figure 3-1 area 1
Mechanical Hazards
Crushing and / or shearing and / or impact hazards caused by:
• Movement of the platen.
• Movements of the injection barrel(s) into the mold area.
• Movements of cores and ejectors and their drive mechanisms.
• Tie bar motion.
Thermal Hazards
Burns and / or scalds due to operating temperature of:
• The mold heating elements.
• Plasticized material released from / through the mold.
Clamping
Mechanism Area
See Figure 3-1 area 2
Mechanical Hazards
Crushing and / or shearing and/or impact hazards caused by:
• Movement of the platen.
• Movement of the drive mechanism of the platen.
• Movement of the core and ejector drive mechanism.
Movement of Drive
Mechanisms Out-
side the Mold Area
and Outside the
Clamping
Mechanism Area
See Figure 3-1 area 3
Mechanical Hazards
Mechanical hazards of crushing, shearing and / or impact caused by the
movements of:
• Core and ejector drive mechanisms.
Nozzle Area
The nozzle area is
the area between the
barrel and the sprue
bushing.
See Figure 3-1 area 4
Mechanical Hazards
Crushing, shearing hazards, and / or impact hazards caused by:
• Forward movement of the plasticizing and / or injection unit including
nozzle.
• Movements of parts of the power operated nozzle shuto and their
drives.
• Over pressurization in the nozzle.
Thermal Hazards
Burns and or scalds due to operating temperature of:
• The nozzle.
• Plasticized material discharging from the nozzle.
Plasticizing and / or
Injection Unit Area
Area from the
adapter / barrel head /
end cap to the ex-
truder motor above
the sled including the
carriage cylinders.
See Figure 3-1 area 5
Mechanical Hazards
Crushing, shearing and / or drawn-into hazards caused by:
• Unintentional gravity movements e.g. for machines with plasticizing
and / or injection unit positioned above the mold area.
• The movements of the screw and / or the injection plunger in the
cylinder accessible through the feed opening.
• Movement of the carriage unit.
Thermal Hazards
Burns and or scalds due to operating temperature of:
• The plasticizing and / or injection unit.
• The heating elements e.g. heater bands.
• The plasticized material and / or vapors discharging from the vent
opening, feed throat or hopper.
Mechanical and / or Thermal Hazard
Hazards due to reduction in mechanical strength of the plasticizing and /
or injection cylinder due to overheating.
3-3SAFETY
Hot Runner User Manual
© 2020 Mold-Masters (2007) Limited. All Rights Reserved.
To Next Page
Loading...
