Tech Brief: PTi's Roll Stand Lock-Out System

Minimize Chrome Roll Nip-Point Injuries

There are many safety hazards operators and maintenance personnel are routinely exposed to when operating and/or servicing sheet extrusion machinery. Of these, chrome roll nip-point juries are amongst the most hazardous. Company safety protocols include deploying essential machinery safeguards necessary to reduce avoidable loss-time injuries and, in the most extreme cases, even permanent debilitating accidents. PTi's Roll Lock-out System provides users with essential safeguards as a mechanism to reduce workplace risks and operational injuries - well aligned with plantwide safety program objectives.

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Roll Lock-Out System

The Roll Lock-Out System is PTi's own patented technology (US 9,139,393) used to improve operator safety by preventing sheet rolls from closing during cleaning, maintenance and thread-up activities. The mechanism utilizes readily accessible pull handles to engage a mechanical lockout along with redundant electrical interlock component.

Image above shows the activated and deactivated positions of the Roll Lock-Out System. 

Operational Benefits of the Roll Lock-Out System:

• protects operators servicing the chrome rolls during maintenance, cleaning and thread-up activities;

• features redundant protection via both electrical and mechanical interlocks, preventing chrome rolls from inadvertently closing when in the Lock-Out position;

• possesses heavy duty engagement for securing the mechanical stops into and out of the Lock-Out position via an industrial pivot latching mechanism;

• includes Lock-Out Tag-Out safety latch mechanism; and

• proprietary design prevents mechanical stops from rubbing on chrome roll shaft journals when secured in a normal production position.

Click the video above for a demonstration of the Roll Lock-Out System with a Heavy Gauge Rollstand.