conveying system

FAQ for Experts. Answers by Experts.


How can material stress be reduced during conveying?

The image illustrates the concept of the control: For a smaller material feedline (ø=45 mm) a reduced blower speed (here: 38 Hz) is sufficient; respectively, an increased blower speed is needed for larger feedline

mo explains how material can be conveyed gently
In issues 35 and 37 we described some different forms of abrasion and signs of wear, as well as listed some possible precautions to reduce wear and abrasion. …

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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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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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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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How can metallic impurities be eliminated?

The separator shown is installed directly on the extractor of the processing machine. Its sturdy design allows installation of further peripheral units, such as conveying, dosing and mixing units. Via the control unit, the separator can be adapted to the intrinsic conductivity of the material to be inspected (e.g. additives with metal oxides or rust).

mo explains the use of metal separators

Even the smallest of metal particles in the melt can cause costly damage. There is an extreme danger for nozzles and hot runner systems as well as for the tools, which means waste as well as loss of production. …

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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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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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How do the various vacuum generators differ?

Central vacuum generation station with side channel blowers and safety filters in the background

mo briefly presents the most commonly used vacuum generators in the plastics industry

Part of the heavy workers of pneumatic suction conveying – the precise term for the most important conveying method in plastic processing – are without a doubt the vacuum generators. …

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How can abrasion be minimized for vacuum conveying systems?

Specially designed for abrasive material are material lines and bends made from stainless steel, borosilicate glass, or specially hardened stainless steel

mo explains abrasion and measures to prevent abrasion

The distances the material travels in the pipe lines from the material supply to the processing machines can be gruelling – both for the material as well as the material lines. …

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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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