Material

FAQ for Experts. Answers by Experts.

47

How does the material get from the storage bin into the conveying material feedline?

Variation of material feeding: suction box with two suction points (left), controlled suction box (right)

mo describes different types of material feeding

The way the material to be conveyed is fed into a material feedline depends heavily on the type of material and the conveying principle. …


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46

How can coupling stations be monitored?

Monitored coupling table with RFID-technology - the hose couplings and the lids of the coupling holders at the coupling table are each fitted with a transponder, the read-write sensors are installed into the casing of the coupling holders

mo describes different concepts for a source-destination mapping

In issue 28 we introduced different multipoint conveying systems, including machine-related conveying systems, which are connected to the different material sources via coupling stations (or tables). …


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45

How can disturbances in the vacuum supply be avoided?

A standby pump replaces the line pump in case of disturbance or servicing

mo explains measures to maintain the vacuum

Disturbances in a conveying system can lead to expensive production downtimes. Regular maintenance of the system can help prevent disturbances. …


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44

What is to be taken into account with regard to the material discharge?

Various concepts of the material discharge flapsmo describes various concepts of the material discharge flaps

One task of the material supply is to convey material to the hopper loader on the processing machine. …


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43

How is the plastic granulate separated from the conveying air?

By increasing the line diameter of the material line (d1) to the internal diameter of the hopper loader (d2), the air speed (red arrows) decreases, while the air volume (yellow arrows) remains the same

mo reveals the secret of the “suspended plastic granule”

In the broadest sense, operation of a hopper loader can be compared with a vacuum cleaner – but with one significant difference: …


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41

How can noise emissions during material handling be reduced?

„Pipe within a pipe system“; the inner pipe is used as the material feed line, the air-filled space in-between the pipes reduces noise emissions and prevents pre-warmed, dried material from cooling

mo explains: methods for quiet conveying

The noise levels during plastic processing are caused by many different sources. In regards to material handling there are two main sources of noise: …


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40

What is a permanent central vacuum?

Example for a permanent central vacuum, installed in motan-colortronic’s new Tech Center in Friedrichsdorf: in the centre two central filters, left two side channel blowers on top of each other

mo explains the characteristics and advantages of a permanent central vacuum
For large productions with numerous material loaders and consequently many delivery points, large throughputs, frequent conveying cycles, and long conveying distances, there are two solutions for automated material supply: …


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39

Which processes are important for material conveying?

Material loader with adjustable fill level sensor (on the glass cylinder) and outlet flap with sensor

mo explains: what is important to consider for time or sensor conveying
The principle of suction conveying relies on the vacuum pump generating a vacuum that is great enough to range through the material feed lines and the material loaders to the material feed. …


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36

When is it necessary to purge material lines?

Controlled suction box

mo explains why purging can contribute to plant safety.

The point of purging is to remove or minimise transported material deposits from a material line. …


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35

What is important when choosing and installing pipe lines?

Curve diversity – gently curved glass bends combine stainless steel pipes to abstract looking technical structures with the goal of conveying granulate from the material source to the dryers and from there to the processing machines

mo describes the most important features of material feed lines

Through pipe lines and hoses from the material source to the processing machine – the distance that material has to cover during material processing can be vast for individual cases. …


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