DE7619060U1 - PULLEY ESPECIALLY FOR BELT CONVEYORS - Google Patents

Description

Reese GmbH & Co. KG Minden / Westf.

", _N _. . ,, May 21, 1976

3260 Rinteln 6

Attorney's File: 158,201

Roller insbocondero for belt! Ördoror.

The invention relates to a transport roller for belt conveyors
and / or roller conveyors. Such support rollers are used in the supporting framework of stationary or mobile conveyor systems. If they run in the lower run, they are also referred to as lower rolls.

The known traq rollers either have a fixed axis or a so-called cap bearing. The role jacket consists either of seamlessly drawn tube or aerolltcm, qoschwoißnn sheet metal. As Lnqcr are predominantly Deep groove ball bearings are used, which are protected against wear and tear by means of appropriate lip seals or labyrinth seals. and, water entry are protected.

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The known support rollers of this type are generally made of a non-corrosion-free metal. Although attempts have been made from time to time to achieve protection against corrosion by wrapping the roller with a plastic film or the like, this protection is not
of long duration, especially when transporting
coarse-grained and heavy goods a piercing of the
Protective film cannot be avoided. To mitigate shock it is known to provide the support rollers with rubber cushion rings, but this is relatively expensive, so that such impact-protected support rollers only in the area
Good delivery point are used.

The invention is based on the object of creating a shock-proof, absolutely corrosion-resistant support roller.

This object is achieved according to the invention in that The roll body is made up of two layers of an inner core material with a high composite capability and an outer, foamed one Plastic jacket is built up.

The invention shows the new possibility of manufacturing a support roller completely from a composite material, the outer component of which is elastic and thus shock-absorbing and one with the inner component
enters into an intimate bond. Through this composite high shear strength is given zwischan the two material components, which also allows a high load capacity of the roller body when the individual components materials -κ in itself only a reduced capacity possess.

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.M's preferred embodiment of the invention is described as Composite material the combination of a core material made of cardboard with foamed polyurethane used. The cardboard is conveniently wrapped as a Rohrkörpor, in which the support roller bearings are inserted at the end. The tubular body thus fixes the idler roller bearings and becomes foamed together with the roller bearings.

The result is a roller that is constructed from inexpensive basic materials. The tubular body made of cardboard and the foamed polyurethane have im Composite has a good load-bearing capacity, even then, when the size of the diameter of the rolling body is essentially determined by the strength of the foamed polyurethane given is. The crosslinked, insoluble and infusible polyurethane has excellent abrasion resistance. Because the core tube including the roller bearings is completely foamed in the polyurethane there are also no problems whatsoever with regard to j \ orrosions £ tiiit.iykeiΐ. uei iicutüi Ti "unroll. This cjilt: especially if the core material consists of cardboard.

Other embodiments of the support roller according to the invention are also possible. Used as the core material of the composite If a plastic is chosen, then it should at least be used when foaming the plastic jacket enter into a connection with this in the surface. For example, the core material can consist of polyethylene, on which a sheath of any thickness made of polyurethane is foamed. As a composite is also

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It is possible to combine a metal core with a foamed polyurethane jacket, but then the Metal core must be provided with a rough surface, so that again the intimate bond between the core material and jacket material is achieved.

It is an advantage of the new support roller that the size of the diameter of the roller body is substantially reduced the strength of the foamed plastic jacket is given. The strength of the foam jacket is, on the one hand, a measure for the impact resistance of the roller body and for others can produce support rollers with any desired roller diameter by varying the thickness of the foam jacket without the need for a structural change to the core and the roller bearing. Since that Core material, for example as a tubular body, is already available as rod material, it is just as easily possible to produce any desired roll length.

Iif olgencä vriri ~ ir. Aucfuhruncrrbeiipi ^ l ^ «τ- ττ-r-F-i described in more detail with reference to the drawing.

In Fig. 1, the left-hand end of an invention-based device Support roller with a fixed axis 2 is shown. On the fixed axis sits a deep groove ball bearing 3, which on his / outer ring carries a hub housing 4 made of deep-drawn sheet steel.

The needle housing 4 also accommodates the sealing devices 5, which are essentially used as dirt and serve to protect water. The sealing device 5 is shown symbolically and can be used in the practical

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Embodiments be designed in the usual way, ί

for example, multiple labyrinth seals f

I or lip ring seals can be used. Before the f

A sealing device sits a further sealing bush 6, \ the hard axis 2 relative tightly encloses and by means of the cap plate is inserted into the hub body 4. 7 The sealing bush 6 also has the further task of keeping a through opening for the fixed axis 2 free when the roller body is foamed.

On the inner part of the hub housing 4, the inner tubular body 8 is pushed, for example made of wound Paper can exist. As can be seen from the illustration according to FIG. 1, the tubular body is common with the hub housing 4 and the bearing parts arranged in this foamed with a plastic jacket 9, which also - as can be seen at 10 - fully encloses the end faces of the bearings, so that the entire roller body is embedded in the foam material in a corrosion-resistant manner.

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Claims (8)

I W ft * I. t ι · «as claims 1. Support roller for belt conveyors and / or roller conveyors, characterized in that the roller body is constructed in two layers from an inner core material (8) of high bondability and an outer foamed plastic jacket (9). 2. Support roller according to claim 1, characterized in that the combination of a core material made of cardboard with foamed polyurethane is used as the composite material. 3. Carrying roller according to claim 1, characterized in that a plastic is selected as the Kerrvnaterial which, when foaming the plastic jacket, at least in the surface with this a connection. 4. Support roller according to claim 3, characterized in that the core material consists of polyethylene and the foamed shell consists of polyurethane. 5. Conveyor roller according to claim 1, characterized in that the combination of a metal core with a rough surface and a foamed shell made of polyurethane is used as the composite material. 7619060 12/16/78 • ti) «» / I »►
■ t * 6. Support roller according to one of the preceding claims, characterized in that the core material of the supporting roller bearings (3) is fixed and foamed together with the supporting roller bearings. 7. Support roller in particular with a fixed axis according to one of claims 1-5, characterized in that a tubular body (8) is used as the core material, into which the support roller bearings (3) are inserted. 8. Support roller according to one of the preceding claims, characterized in that the size of the diameter of the roller body is given essentially by the thickness of the foamed plastic jacket (9). 7619060 12/16/76