Motorized Drive Roller (MDR)

✓ Operator friendly

  • increased safety - low torque verses conventional motors

  • no sprockets or chains reduce pinch points

  • photo sensors in side frame reduce catch points

  • low noise improves working environment

  • powder coat conductive paint reduces sharp edges

✓ Operations friendly

  • reliable - failures typically effect only a single zone

  • flexible - built-in variable speed, accel and decel

  • modular - easy reconfiguration

  • clean - no grease or oil

  • true zero-pressure accumulation

  • low energy use - 50-75% less than other systems

  • low over-all cost of ownership 

✓ Maintenance friendly

  • fewer spare parts

  • low cost spare parts

  • short repair times

  • consistent operation and repair across modules

  • 24 volt DC typically doesn't require an electrician

  • most repairs can be done by a single person

  • maintenance staff typically can carry parts with them 

Read More about Hilmot MDR Controls

 

Motorized Drive Roller : Energy Savings

Because of the Run On Demand feature a substantial savings in power consumption costs can be achieved. Based on a 400' long roller conveyor, the following electrical costs were formulated for a period of one year (24/7 for 50 weeks). Remember, energy cost savings will increase as energy costs escalate!

 

• Conveyor System with standard electric motordrive - 5620 watts / 1000 = 5.62 kW 5.62 kW x 8400 yearly operating hours = 47,208 kWh 47,208 kWh x .0697 rate = $3290.40

 

• Conveyor System with MDR - 24VDCdrive 2290 watts / 1000 = 2.29 kW 2.29 kW x 8400 yearly operating hours = 19,236 kWh 19,236 kWh x .0697 rate = $1340.75

$3290.40 - $1340.75 = $1949.65 or 59% YEARLY SAVINGS!

 

More Details

Hilmot MDR is a modular conveyor system utilizing a 24 volt DC motorized roller. This fast advancing technology uses a self-contained motorized drive system, completely enclosed within a roller, to power a segment or zone of the conveyor. Rollers adjoining the motorized roller are slave-driven from it.

 

This technology is the most revolutionary since the advent of the line-shaft conveyor in the late '60s. Its impact is currently expanding rapidly as more users and manufacturers begin to see the benefits of this technology. The relationship between tangential force product weight and product characteristics has been at the root of conveyor technology for the past 30 years. This natural extension places Hilmot at the forefront of applying this new technology.

 

Hilmot MDR has many beneficial features. All the modules have a frame depth profile of 6-1/4. Since every motorized roller can be individually controlled, every segment of the system becomes a potential zero-pressure zone. This includes curves and transfers. Hilmot MDR eliminates the modularity restrictions of conventional conveyor. Each individual module can have its own drive and controls. The following is a list of built-in features and their benefit.

 

  • Modular design improves layout/easy to reconfigure

  • Run on demand/less noise, wear, and energy

  • Non-contact zero pressure/product protection

  • Compact low profile/multi-level usage

  • Reversible/less hardware required

  • No scheduled maintenance/lower operating cost

  • Improves working environment (quieter, safer, better ergonomics and cleaner operation)

  • Lower power consumption

  • Low voltage/safety and lower cost

  • Simple installation/lower cost

  • Soft start and stop/low G-forces

  • Simplifies conveyor operations

  • Improves material flow

  • Variable speed/versatility to suit each requirement

  • Choice of control level to meet needs and budget

Description Of Accumulation

An MDR conveyor with accumulation is composed of several 'Zones', as shown in the illustration. Each zone is powered by a motorized drive roller. The drive rollers are controlled by a communications network, allowing the zones to communicate with each other to achieve the desired accumulation method. The rollers in a zone do not rotate until the product has been detected in the adjacent upstream zone. In other words, the rollers in Zone 1 do not rotate until the photo-eye in Zone 2 detects a product. The rollers in Zone 2 do not rotate until the photo-eye in Zone 3 detects a product.

 

There are two types of accumulation release: Singulation release and Slug release. Singulation release allows one product to be released at a time after the downstream zone has cleared. Slug release allows a predetermined amount of product to be released at one time after the downstream zone has cleared. Slug release is typically used in Palletizing or Machine loading conditions. The type of release to be used is usually determined at design time.

Accumulation begins when a product is forced to remain in Zone 1. The photo eye in Zone 1 detects the product and turns off the motorized drive roller in Zone 1, stopping all the rollers in that zone. When a second product is detected by the photo-eye in Zone 2, the motorized drive roller in Zone 2 is turned off, stopping all the rollers in that zone. This accumulation sequence is repeated for each succeeding zone as long as the product in Zone 1 is forced to remain in position.

When the product in Zone 1 can be released, the motorized drive roller is turned on and the product moves down the conveyor system. When the product clears the photo-eye in Zone 1, the motorized drive roller in Zone 2 is turned on and the product moves from Zone 2 to Zone 1. This release sequence is repeated for each succeeding zone as long as the product is not intentionally stopped in any given zone. The subsequent gap between products is approximately equal to one zone length. This accumulation sequence may be started anywhere along the length of the conveyor.

The MDR accumulation is a true zero--pressure accumulation. This means that the product being conveyed never comes in contact with any other product, provided it is dimensionally compatible with the zone (product length is less than the zone length).

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Hilmot, LLC | 11925 W Carmen Ave Milwaukee, WI 53225  | 414-446-4900

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