DE1266713B - Intermediate roller - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

£ JEk

GERMAN Wj9®k PATENT OFFICE

EDITORIAL

Int. Cl .:

D06c

Number:
File number:
Registration date:
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German class: 8b-20

1266 713
T19683 VII a / 8 b
February 16, 1961
April 25, 1968

Applicant:

Eduard Küsters, machine factory,

4150 Krefeld, Gladbacher Str. 457

The invention relates to an intermediate roller

for roller assemblies for the treatment of webs, in particular textile webs or paper webs under pressure, their jacket made of polyamide plastic or super polyamide plastic or a similar other plastic is made.

It is known, for example, the surface smoothing of paper in roller units or Make calenders in which the paper webs or sheets of paper have a series of rollers run through, which alternately consist of hard rolls (steel rolls) and elastic rolls, d. H. Soft rolling, or rollers with a paper or cotton covering.

For the treatment of papers in calenders, it has already been proposed that the covering of the elastic Rollers made of macromolecular polyhydrocarbons, preferably of high molecular weight Polyethylene. Rubber covers are also used for the soft rolls of calenders and plastic, including polyamide plastic, are known.

All previously known proposals for these rollers, in which plastic to form the working roller circumference is used, have a supporting core or mandrel for the plastic. Here the plastic is subject to a condition caused by the load-bearing core or mandrel Flexing work, as a result of which these rollers, at least in the long run, cannot be granted any success. Apart from that of this, the application of the covering or coating to a core or mandrel is proportionate awkward and expensive.

Primarily to remedy the aforementioned inconveniences and to take advantage of the favorable properties of polyamide plastic or super polyamide plastic in roller units for pressure treatment According to the invention, the intermediate roll of material webs consists of such a support mandrel free or another similar plastic.

This ensures that the plastic forming the working roller circumference is no longer the from a core or mandrel originating Verwalken is subject and the favorable properties of the polyamide plastic or super polyamide plastic for the pressure treatment of webs without narrowing with a roller with a long service life can be exploited. In addition, the roller can be produced easily and cheaply because it is used for production only plastic blocks of the appropriate length are required, which require a surface treatment, ζ. Β. by turning, experienced.

The drawing illustrates various exemplary embodiments of the invention.

A b b. 1 shows a roll for a roll calender in a longitudinal view;

A b b. 2 illustrates a roll for a friction calender in a longitudinal view;

A b b. 3 shows schematically a roller assembly in elevation and side elevation;

A b b. 4 shows a further roller arrangement schematically.

The roller 1 is solid, d. H. over their entire cross-section and along their entire length, made of plastic, for example made of plastic on the basis of super polyamides, and is made of a plastic block made by turning. At its ends, the roller has bearing journals 2 that are integral with it. At Instead of bearing journals, the roller can also have recesses at the ends into which bearing journals intervention. The roller can also have an axle bore.

In the case of the roller according to A b b. 2 gears 3 for the roller drive are provided on the roller ends.

According to A b b. 3, the plastic roller 1 is arranged between the two steel rollers 4 and 5. Here is the roller axis 6 opposite the connecting line? the axes of the steel rollers offset so that the plastic roller secured against bending in the direction of passage of the web to be treated is. A special support roller 8 can also be provided for this purpose, as shown in dash-dotted lines is indicated.

In Fig.4 the plastic roller 1 is between the two steel rollers 9 and 10 and the steel roller 11.

The intermediate roller 1 made of plastic can be heated accordingly during operation experience the hardness and surface elasticity required for the treatment of the respective goods. For this purpose, one of the steel rollers working together with the roller can be heated and the other these rollers must be cooled.

C09 540/127

Surface damage to the intermediate roller made of plastic can be remedied, for example, in that the surface of the roller is heated until the surface becomes plastic and through its Runout is smoothed between steel rollers. Here, those who work with the roller can Steel rollers are heated to a temperature that heats the surface of the roller until it becomes plastic will.

Claims (1)

Claim: Intermediate roller for roller assemblies for the treatment of webs of material, in particular textile webs or paper webs under pressure, the jacket of which is made of polyamide plastic or superpolyamide plastic or another similar plastic, characterized in that that the roller is made of such plastic without bearing mandrel. Considered publications:
German Patent No. 954,934;
German publication no. 1038 518j
1071547;
U.S. Patent No. 2,851,869. 1 sheet of drawings 809 540/127 4.68 © Bundesdruckerei Berlin