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Food SafetyEngineering R&DLatest headlines

Engineering R&D

Exploring SideDrive's unique conveyor configuration

When you think of conveyors, you think of conventional pulley-driven or drum-motor powered designs, however, this system uses small motors geared to the belt’s edge.

By Wayne Labs, Senior Contributing Technical Editor
Raw Patties

SideDrive conveyors are edge driven using Intralox belting, and allow smaller, synchronized drives to be placed where needed on the belt. Photo courtesy of SideDrive Conveyor. 

Spiral Conveyor

In the spiral conveyor shown here, drives are on the belt at the left-hand side in this photo. Photo courtesy of SideDrive Conveyor.

Raw Patties
Spiral Conveyor
June 9, 2021

And now for something completely different, to borrow from Monty Python’s creators. An edge-driven conveyor belt—or maybe call it a side-driven conveyor. And so, SideDrive Conveyor Company was born—coming up with a technology that drives a plastic conveyor belt from the edge, or side. Using Intralox belting, SideDrive Conveyor decided to veer away from the usual pulley-driven or drum-motor-driven conveyor and move the belt from its edge with a sprocketed wheel.

But why? Having grown up on a farm and being quite familiar with conveyors and having seen zillions of conveyors operating in food plants using conventional drive technology, I must admit my first reaction was one of puzzlement. And SideDrive Conveyor claims to be the first conveyor company to focus exclusively upon such a device and they say they have the most sanitary spiral in the world.

I can visualize driving a belt from the edge might have certain advantages, but I was hard pressed to figure out what they are. Maybe keep motors away from food? Maybe increase belt life through reduced wear? Well, to find out, I asked Kevin Mauger, president of the new company to explain why he says the configurations are limitless, and the possibilities are endless with this new technology. Mauger is also president of NCC Automated Systems, which has a Preferred Supplier Agreement with Intralox.

 

Kevin Mauger

Kevin Mauger, president, SideDrive Conveyor Company

 

FE: Kevin, I’m not a mechanical engineer, but rather an old electrical engineer. But we have lots of readers who are mechanical engineers and will grasp this concept. So, of course, my first question is: Why a sprocketed edge drive?

Kevin Mauger: Great question! Driving from the side allows us to put multiple drives on the same belt. By synchronizing them and driving the belt in multiple locations, this allows us to create belt paths that would normally have too much tension with a single drive. Without this, the tensile strength of the belt would be exceeded and it would break. With multiple drives, we reset the tension back to zero at each drive location, and don’t over-stress the belt. 

There are other ways of dealing with tension such as creating powered drums that rotate with the belt or bearings on the bottom of the belt. The benefits vary from one technology to the other. SideDrive is best with sanitary applications that require washdown, or layouts that require a lot of flexibility as we have less design constraints than some other solutions. 

 

FE: You claim to be the first company with such a drive. What gave you the idea? How did you come up with the idea?

Mauger: Well, we’re not. I hope we didn’t imply that. We are the first company in the world with a singular focus upon the technology. SideDrive is all that we do and we have invested heavily in R&D, engineering software automation, tooling and manufacturing processes in order to drive this technology to new levels. A few others do it, kind of, but it is not their exclusive focus. 

 

FE: Are you the key designer/innovator behind SideDrive?

Mauger: Not at all. We have an entire team of people designated to the business. My role was to create the vision for the company, set up the team, and teach them how we start up and run the business in order to be the best in the world at what they do. 

 

FE: Did Intralox already have a belt designed for side- or edge-driven functionality, or did you work out a design with Intralox?

Mauger: This basic belt has been in existence since 2005, but the side-driven version was released in 2016. 

 

FE: What are the advantages/disadvantages of using a side-driven conveyor?

Mauger: The major advantage over other traditional food-based spiral technologies is that it doesn’t require a rotating drum or cage. Not only is the drum large and expensive, but it also makes cleaning more cumbersome because it is hard to clean and access the inside of the drum. We believe that the SideDrive system is the easiest spiral in the world to clean, which helps reduce risk of food contamination, saves labor and reduces water usage.

The other advantage is that because we can put drives wherever we’d like, we can create more flexible layouts specific to each application. Belt tension is always a constraint with most conveyors, but not with ours as multiple drives satisfy this concern. 

Finally, we can design infinite length conveyors that are “transfer-less.” This benefits extremely sensitive products that cannot be transferred conveyor to conveyor well. 

The major disadvantage is that it is only a practical solution when you need multiple drives on the same belt. If you can create a conveyor with a single drive, a traditional drive arrangement will be a more cost-effective solution. 

Another disadvantage is that as of today, the belt technology is not rated to be utilized within a freezer. 

 

FE: What are good food/beverage applications for SideDrive?

Mauger: The primary applications are when a customer wants a spiral up or down and it is a sanitary application. This can be either feeding, discharging from a spiral or a cooling or curing operation. 

We can handle any food product, including direct, unpackaged products. It is also great in primary wrapped product applications when there is a risk of leakers or partially wrapped products coming down the line, creating a need to wash down the conveyors. This would otherwise create a mess on a conveyor that isn’t designed to be easily cleaned and/or food-safe. 

We are seeing a lot of interest in the following food segments: pizza, ice cream, frozen RTE meals, IQF, bakery, meat, seafood, eggs and pet food. 

It is also ideal for products that risk loss such as spillage or damage when being transported over transfers. The limitation of transfers is a great solution here.

 

FE: What kind of motor/drive/gearing setup do you need for SideDrive? How does it compare with conventionally pulley-driven systems in terms of energy, parts/components lifecycles, conveying capacities?

Mauger: Another great question! We utilize either a mechanical or electronic synchronization strategy to ensure that all sprockets are turning at the same rate. If mechanical, we utilize a common drive shaft and if electronic, we utilize electronic gearing to ensure the same. 

The concept in general uses less energy than most conveyors because we normally return the belt path on a direct shot (versus under the conveying surface), which reduces the footage of the belt, and thus the weight of the belt. Less weight to pull; less energy required. 

It also requires less energy to drive than a cage or drum-style spiral because we don’t have a large cage to drive or rotate. 

 

FE: How about washdowns? Do conveyors need to be disassembled for cleaning? What are the steps for cleaning adequately?

Mauger: This is the best part. The design is incredibly open and easy to clean and we’ve borrowed sanitary design principles that our parent company has been perfecting for 35 years. We’ve all but eliminated flat surfaces, harborage points, and the fact that our spirals don’t have drums makes it inherently more open. The wearstrip is solid UHMW, incredibly smooth and can be removed without tools. The overall frame is a cantilever style design that leaves the sides completely open for fantastic visibility and access to clean. 

 

FE: Can you place a drive mechanism on a curve, or should it be on a straight path? How do you synchronize sprocket drives where you need to have more than one drive?

Mauger: Drives can be placed on curves or on straight sections. If we can’t mechanically couple the drive sprockets, we utilize high resolution encoders (more than 1000 pulses per revolution) and electronic gearing and camming to ensure all sprockets are turning at the same rate. 

 

FE: How does loading a conveyor with SideDrive compare to loading a conventionally driven conveyor?

Mauger: Generally, we will be able to handle heavy loads for two reasons. One, it is a very heavy-duty belt, and two, we can simply include more drives as required to satisfy the tension requirements. That being said, with a traditional end drive and multiple sprockets, you can handle more load with a single drive than with an edge driven drive. So, it really depends upon the application to compare the two. Many times a traditional end driven conveyor will be more practical. 

 

FE: What did I miss on this subject?

Mauger: I don’t think you missed anything, but I’ll take the opportunity to emphasize two points: 

  1. We believe that we make the most sanitary, food-safe spiral in the world.
  2. We are the only company in the world with a singular focus on side-driven technology from Intralox.

 

FE: Is SideDrive available now? Are you looking for partners?

Mauger: Most certainly. We are 100% operational. There has been an extreme amount of interest and we are actively manufacturing products. 

KEYWORDS: conveying drive technology food safety future of food manufacturing sanitation

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Wayne labs 200px
Wayne Labs has more than 30 years of editorial experience in industrial automation. He served as senior technical editor for I&CS/Control Solutions magazine for 18 years where he covered software, control system hardware and sensors/transmitters. Labs ran his own consulting business and contributed feature articles to Electronic Design, Control, Control Design, Industrial Networking and Food Engineering magazines. Before joining Food Engineering, he served as a senior technical editor for Omega Engineering Inc. Labs also worked in wireless systems and served as a field engineer for GE’s Mobile Communications Division and as a systems engineer for Bucks County Emergency Services. In addition to writing technical feature articles, Wayne covers FE’s Engineering R&D section.

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