Mich. Admin. Code R. 408.16234 - Injection molding machinery
Rule 6234.
(1)
An injection molding machine, except for one with a movable table that is
subject to the provisions of subrule (4) of this rule, shall be equipped with a
safety gate or guard that is designed and constructed to prevent an employee
from reaching into the point of operation, except when the gate is
open.
(2) A horizontal injection
molding machine shall have the safety gate interlocked to stop or prevent
mold-closing by any 2 of the following:
(a) An
electrical mold-closing control.
(b) Hydraulic or pneumatic valves that
control mold closing.
(c) A
mechanical device that prevents mold closing.
(d) A second electrical mold closing control
(all electrical horizontal injection molding machines).
(3) A vertical clamp injection molding
machine shall have a mechanical restraint device to prevent unintentional
gravity descent of the mold, and shall have the safety gate interlocked to stop
or prevent mold-closing by any 2 of the following:
(a) An electrical mold closing
control.
(b) Hydraulic or pneumatic
valves that control mold closing.
(c) A second electrical mold closing control
(all electrical vertical injection molding machines).
(4) An injection molding machine that uses a
movable table to hold the lower mold shall be provided with a guard or device
that is designed and constructed to deny an operator access to the point of
operation during machine cycle.
(5)
An injection molding machine shall be equipped with a fixed or an interlocked
movable or removable guard, or other device that is designed and constructed to
prevent an employee from reaching into the clamping mechanism.
(6) When purging an injection molding
machine, an employee shall be protected from the purging splatter by a shield
that is fixed, portable, or worn on the employee. The same shielding shall be
used when servicing a heated runner manifold nozzle.
(7) An injection molding machine that uses an
extruding machine that has an exposed feed screw shall have the screw guarded
as prescribed by
R
408.16233(4).
(8) Employers engaged in mold changes on
injection molding machines shall comply with General Industry Safety Standard
Part 85. "The Control of Hazardous Energy Sources," (Lockout/Tagout), as
referenced in
R
408.16202.
Notes
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