For companies operating continuous process lines, a conveyor belt that gradually moves out of position might not seem like an immediate cause for concern. But even relatively small amounts of belt wander can develop into a much bigger problem if they are not identified and corrected.
For food and chemical manufacturers in particular, where production lines can operate continuously and downtime comes at a significant cost, effective steel belt tracking should be regarded as an important part of conveyor maintenance and production efficiency.
What happens when a steel belt starts to wander?
Steel conveyor belts naturally move laterally as they travel around a system. Some movement is normal, but excessive or uncontrolled belt wander can put additional strain on the belt, conveyor components and surrounding machinery.
If the problem is allowed to develop, the consequences can include accelerated belt wear, damage to the belt or equipment, increased maintenance requirements and, ultimately, unplanned production downtime. There can also be safety and quality implications.
A belt that is not running consistently in the correct position can affect how product is distributed across the belt. In some applications, product can be deposited close to or beyond the edge of the belt, creating waste and potentially introducing additional hazards. For a production manager or engineering team, therefore, belt tracking is about much more than simply keeping a conveyor running in a straight line.
The benefits of getting belt tracking right
Effective belt tracking helps maintain a stable belt position throughout the conveyor system. This allows manufacturers to make better use of the available belt width while reducing the stresses associated with excessive lateral movement. The potential benefits include:
- Reduced belt and equipment wear
- Lower maintenance requirements
- Less product waste
- Improved production efficiency
- Greater utilisation of the available belt width
- Reduced risk of damage to the conveyor system
- Improved operational safety
- Longer belt service life.
There is also a financial consideration. Steel conveyor belts represent a significant investment, so extending their operational life can help manufacturers get more value from that investment.
Tracking is particularly important in continuous process applications
Belt tracking can become particularly challenging in applications where belts are exposed to changing temperatures, demanding production conditions or long operating cycles.
Bake ovens, coolers and other continuous process equipment can expose steel belts to thermal expansion and contraction, for example. Without an effective tracking and tensioning system, maintaining a consistent belt position can become increasingly difficult. This is why modern tracking systems need to do more than simply react when a belt moves too far from its intended position.
How does an automatic belt tracking system work?
Continuous Process Solutions supplies a pneumatic belt tracking control and tensioning system designed for steel belt installations up to 2,000mm wide, including bake ovens, conveyors and coolers.
The system continuously monitors the lateral position of the belt using a belt positioning sensor. If the belt begins to move away from its intended position, the sensor provides a signal to a PLC, which activates the necessary correction. The result is continuous, automatic monitoring and adjustment rather than relying on operators to identify and correct belt movement manually.
The system is designed to maintain belt tension even in the event of a sudden loss of power or air supply. It also compensates for changes caused by thermal expansion and contraction, helping maintain consistent operating conditions as the conveyor heats up and cools down.
Precision matters
A tracking system is only useful if it can accurately identify where the belt is running.
The Continuous Process Solutions system is designed to provide tracking accuracy of up to ±4 mm under different environmental and operating conditions.
Its displacement transducer is fully submersible and resistant to dirt. Because there are no electrical contacts across the transducer’s positioning element, the system provides high-resolution positioning information while avoiding the wear associated with conventional contact-based components. That combination of accuracy, durability and continuous monitoring is particularly valuable in demanding industrial environments.
Prevention is better than an expensive belt repair
For manufacturers, the biggest benefit of effective belt tracking may ultimately be what it prevents.
A steel belt that is allowed to run incorrectly for an extended period can suffer unnecessary wear or damage. In the worst cases, what began as a relatively minor tracking issue can develop into an expensive repair, replacement or period of production downtime.
Regular inspection and maintenance remain essential, but automatic tracking can provide an additional layer of protection by identifying and correcting belt movement while the conveyor is operating.
For companies relying on steel belt conveyors, it is therefore worth asking a simple question: how much attention is being paid to where the belt is actually running?
Good belt tracking is not simply about protecting the conveyor. It can help manufacturers protect production, product quality, safety and the investment they have already made in their equipment.
Looking beyond reactive maintenance
Belt tracking is a good example of why preventative maintenance can be more effective than waiting for a problem to become a breakdown.
By monitoring belt position continuously and correcting movement before it develops into a more serious issue, manufacturers can take a more proactive approach to conveyor reliability. For food, chemical, pharmaceutical and other continuous process manufacturers, that can mean fewer avoidable problems, more predictable maintenance and greater confidence that the production line will keep moving. Contact us today for a discussion on your tracking and tensioning needs.