Mich. Admin. Code R. 408.16234

Current through Vol. 24-22, December 15, 2024

Section 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.

Mich. Admin. Code R. 408.16234

1979 AC; 1992 AACS; 1998-2000 AACS; 2015 AACS; 2021 MR 6, Eff. 3/26/2021