Intralox Engineering Manual. Uploaded by andrew_ferrier Manual for design and selection of Intralox modular belt. Ideal for food grade type applications. Intralox. Modular Plastic Conveyor Belts. Belt Selection Guide. July . Design Engineers — Intralox has design the Intralox Engineering Manual. Conveyor Belting. Engineering Manual. WARRANTY. Intralox, Inc. warrants products of its own manufacture for a period of one year from date of shipment to the.

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Documents Flashcards Grammar checker. Design Guidelines Typical Components Product Line ThermoDrive Typical Components Technical Information and Application The recommendations provided in this document have proven successful for most installations; however, extreme or unique conveyor designs should be reviewed by an Intralox enhineering.

There are two important considerations: There should be loose belt on the return path. Actual number manal type of limiters A may vary from what is pictured. Desired location of containment block D may vary from what is pictured. ThermoDrive belting is not to be tensioned. Consult with the Intralox Technical Support Group for conveyor design and belt specification assistance prior to ordering.

This service is available at no additional charge to ensure you receive the best performance from this conveyance solution and receive engimeering Intralox Performance Guarantee.

Contact Intralox Technical Support Group for recommendations specific to your application. This dimension will fig. Special consideration must be given to any intermittent joint in the support rail. At the joint, ensure each end is chamfered to allow for smooth transitions and to avoid catchpoints.

An example of joint stagger is shown in Fig. enggineering

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Break all sharp corners on the carryway rails. The angled surfaces can be effective in removing gritty or abrasive material from the underside of the belt. This arrangement is also good for heavily loaded applications. Standard flat wearstrips can be manuual to form the C fig. Contact Intralox Technical Support Group for recommendations C -Conventional – 2 in 51 mmmaximum – 6 in mm specific to your application.

Intraalox to do so will cause interference between the drive bars and the leading edge of the downstream rail, resulting in rough belt operation and possible damage to the belt or rail. Belt Support Wearstrip types and sizes Intralox can provide the following wearstrip material types: Englneering UHMW wearstrips should be attached with plastic bolts and nuts in slotted holes to allow for intrlox and contraction with temperature changes.

Contact Customer Service for ordering assistance. Carryway types Intralox recommends the following material types for use as carryway support rails: Thermal expansion and contraction Installation of Intralox flat and angle wearstrips should allow for thermal expansion and contraction. The use of slots when mounting will accommodate changes in dimensions due to thermal expansion. Be cautious to account for gaps between wearstrips when changes in length occur from thermal expansion.

For reference, see Figure 2. The clearance should be determined from thermal expansion calculations.

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It is recommended that wearstrip joining locations be staggered for smooth belt operation. Since a belt installed properly will be loose on the conveyor, belt sag in the returnway should be expected.

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In order to properly control the shape and location of this sag while ensuring the belt is not pre-tensioned, the belt must have sufficient support in the returnway. Catenary sag, when implemented correctly, is critical intalox On many conveyors, a combination of continuous and intermittent supports is desirable.

When using continuous support rails: Further, to accommodate fluctuations in belt length, at least one open span is required in the returnway. This is especially true in longer conveyors shaft to shaft length over 25 ft [7. B Full-length rail support in the returnway is not recommended A because there is no room to accommodate changes in length accumulation zone needed. A should not exceed 72 in mm. Doing so, in any direction, will lead to belt damage, including premature failure of ThermoDrive belting.

In general, we recommend 3 ft 0. This accumulation zone needs to be closer to the infeed for inclines and closer to the drive end for horizontal conveyors.

In cases where obstacles exist and the accumulation zone needs to be located around the obstacle, be sure to adjust your returnway support to avoid contact with these obstacles.

ThermoDrive® Technical Manual

The solution for this situation could be different roller spacing, a short set of rails, or even shoes. As you eliminate dynamic elements rollers and replace them with static rails, shoesfriction will increase in the returnway. The belt should be installed so that it has an appropriate amount of sag for all unsupported spans Fig. Depth of catenary sag will vary as the span of return rollers is adjusted e.

Depth of sag will vary during belt operation according to belt speed, temperature change, and product load fluctuations. Ensure zero pre-tension in the conveyor. Returnway rollers and shoes commonly have flanged shoulders to assist in containing the belt.

Belt Support 11 Returnway with Flights Given that all of the above recommendations for the returnway still apply, the following are recommendations more specific to belts with flights. Flighted belts always need an indent of at least 1. It is possible to return on degree flights. Never return on scooped or degree flights. Center Notches When using a center notch in the belt, the following recommendations apply to both the carryway and returnway of the conveyor: Break all sharp edges.

Contact TSG for applicationspecific recommendations. Belt Length Fluctuation One of the principal functions of the returnway is to properly accommodate the increase or decrease in the length of the belt while operating. Therefore, conveyors should be designed to incorporate a suitable location within the returnway where the temporary length change of the ThermoDrive belt can be accommodated. The natural location of belt accumulation is immediately following the drive sprockets Fig.

The path the belt takes through the returnway will need to be free of obstructions or catch points for example: A belt which contracts due to cold temperatures may cause overtensioning and excessive shaft loads if surplus belt is not provided.

Elongation strain under load All belts will elongate if load is applied.

It should be noted that under most conveyor conditions, only the carryway length needs to be considered when determining belt elongation. This becomes critical when ThermoDrive belting is made to length at a temperature other than the one at which it will actually run. If this calculation is not done properly, the length of the ThermoDrive belt may be significantly wrong. Determining the temporary fluctuation in belt length relative to temperature. ThermoDrive Polyurethane Belt Length: Horizontal A to B Formula: When using adjustable idle shafts: In every case, ensure that the belt path is completely free from obstructions such as cross members, bolts, wiring, etc.


In most cases, the actual shape of catenary curve is not important, but the conveyor designer is interested in the excess belt stored in the returnway section.

The excess belt in each section, X, is found from: When using continuous rail supports in the returnway, length changes may be accommodated by creating an open span in the rails. Regardless of returnway belt support method, typically, one 6 ft 1. It is quite possible that multiple catenary sag sections may be required to properly store belt, though remember that sag will not distribute evenly—it generally will collect in the longest sections and where belt tension is lowest.

In most applications, this change in belt length will be relatively insignificant and will thus require nothing more than a designated location for accumulation as needed.

However, a horizontal conveyor ft The drive bars on the bottom surface of ThermoDrive belting extend to the edge of the belt, allowing for the lateral rigidity required to effectively contain the belt. Conveyor side rails, frames, containment blocks, or flanged rollers Fig.

Recommended clearance between the belt guide and the edge of the belt is a minimum of 0. The flange height of a return roller should be. Chamfer both sides of containment block-leading and trailing ends Fig 2. Minimum length of containment block should be 6 in mm.

When containment blocks are used, spacing should fall into the range of ft 1. Applications where side loading is present need longer containment blocks.

Full-length containment rails are preferred at areas where side loading or diverting product occur. All hardware should be countersunk below the level of the belt. Drive shafts should be square with conveyor frame best practice. Framework 15 ThermoDrive belting has been designed as an optimal hygienic solution to greatly reduce the time and effort required to clean the belt.

In order to fully realize the benefits of this hygienic solution, the conveyor should be designed to allow for a loosely fitted ThermoDrive belt. The loose fit will allow the belt to be simply lifted and cleaned in place or, depending upon the conveyor design, easily removed from the conveyor so that the conveyor may be easily cleaned. The framework configuration should allow for appropriate sanitation and maintenance as required in the specific application.

Further, if the conveyor design requires ThermoDrive belting to be delivered open-ended, an access window of no less than 24 in mm can be included to accommodate a ThermoDrive splicer. If the conveyor is designed to accept an endless belt, then a splicer and splicer window is not required. Further adjustment is not required. In most cases, the standard 1.