DE7504745U - Board stretching roller with rubber coating for flexible textile, paper or plastic webs - Google Patents

Description

Dipl.-lug. Dr.-Ια «. HFINZ NTCKEJLS ^ Patent attorney; : ₄₈ b ^ LEFELD / WESTF. Q

February 12, 1975

H. Wittier & Co., Maschinenfabrik, ί * 812 BrackujBde, Bielefelder Str.

Wide triangle with rubber jacket for flexible textile · -, paper or Plastic sheeting

The subject of the innovation concerns a spreader tree with rubber cover for flexible textile, paper ad. Plastic sheeting, consisting of a fixed, straight od. curved or from a number of flexible, resilient elements formed axis, arranged on the individual pipe sections supported by roller bearings at a small distance from each other are, and wherein the Breitstreckualze end by each an end cap provided with a screw thread or the like.

Spreader molding with rubber cover and fixed bzui. adjustable curvature for the most film-free guiding of biarenbahnen of all Αγϊ in the paper, textile and foil industry are well known «

Breitsreckuialzen are used in this relevant industry

Not only used there, ωο they run in the dry, but very often also there, ωα particular influences of liquids, such as alkalis or the like, play a decisive role. Because of this, it is necessary to shield the roller bearings arranged in the interior of the roller against all external influences, such as dust, moisture or the like, so that the ingress of moisture, but also dust, can easily destroy the roller bearings can lead to avoid.

As a result, bBi plays wide stretching rollers that are Web guides in the textile and paper industry in wet use are used, the perfect sealing of the Ulalzenenden between the final agmentan and the rubber jacket Bine decisive * Role for the service life and service life of the inner roller bearings and thus for the roller itself.

As part of the end seals for stretch rollers are now falgerv-de solutions become known:

a) The disc-shaped end caps of the Breitstrsckwalza are screwed onto the end segments unc front side against the rubber jacket of the spreading roller pressed. End caps and rubber cover as well as end segments and rubber cover are additionally glued together

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b) The end caps and the end segments of the spreader roll are conical in shape. At the Unscrew the end caps on the end segment becomes the rubber cover between the inner canoe

the end cap and the outer conua of the end segment recorded and thus radially clamped «Here, too, a work life of the Metal parts with the rubber cover take place.

c) The sealing is carried out as described under b), ! iinby the end caps additionally with am Perimeter scratched arranged holding claws are equipped, ujobei these can uierden individually by means of Allen screws and thereby an additional claw-like clamping of the rubber cover in the end caps Deuilrken.

The previously known methods of sealing have the considerable disadvantage that they lose their effectiveness when the rubber material β shrinks, in which case creeping moisture can penetrate into the interior of the roll and corrosion can occur here on the roller bearings, so that the spreader roller as such becomes inoperative and has to be replaced. This process is associated with considerable costs, conditionally on the one hand by the repair costs and on the other hand by the temporary failure of the machine itself.

The inventor has now put the issue on the sector

de "Sealing vun wide stock molds in wet use the so far To avoid any disadvantages that may arise.

The technical task is to create a seal to fabrics that, under the given conditions, have permanent water and dust tightness between the rubber jacket and end segments guaranteed.

The solution to the technical problem described above It is now characterized in that the end of the rubber jacket in the area of the finder caps is made of metal or plastic existing, provided with SpannöehiloB tightening strap is held in such a way that the rubber jacket on the end

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Bhm pipe section pressed ^ and the same seated sealingly.

Here, the pipe section aL'f can have its »outer jacket in the Area of the end cap a circumferential, groove-shaped recess have, the width of the recess being approximately the width of the clamping band is equivalent to.

Another possibility is that the pipe section cylindrical outside of its outer jacket in the area of the end cap is formed and circumferentially aufmeist a grooving. The creasing corresponds to the width of the used in Btuia Tensioning strap

Another possible embodiment in connection with the tensioning strap is given by the fact that the pipe section opens its outer jacket in the area of the end cap one to the front running conical gradation, the etuia of the width of the tensioning strap corresponds, has.

So that the turnbuckle does not work in conjunction with the tensioning strap has a disruptive and thus disadvantageous effect, can expediently the Rahrabschnitt on its outer jacket at the point that the turnbuckle rests on the rubber jacket, flattened be trained.

The subject of the innovation is shown in the following drawings, whereby FIGS. 1 to k show the subject of the innovation in its essential features, but slight structural changes are shown in the individual versions. At the same time, FIGS. 1 to k thin out the detailed description of the subject of the innovation. Show it

F * Tg. 1 shows the object according to the innovation, partly in view and partly in section, the pipe section having a groove-shaped recess on one side in the region of the end cap;

2 shows the object according to the invention, in view and partially in section,

the pipe section in the area of the end cap has a groove at the end;

3 shows the object according to the invention; partly in view, partly in section, among other things the pipe section in the area of the end cap has a conical ab " gradation has j

FIG. K shows the pipe section according to the invention in partial view, the pipe section being designed to be flattened on its outer jacket at the point at which the tension lock rests on the rubber jacket.

According to FIGS. 1 to k , the rubber jacket is denoted by 1. The pipe section 2 is carried by the roller bearing 3 on the axis h . The end cap is labeled 5. The tension band is numbered 6 and the turnbuckle 7.

According to FIG. 1, the pipe section 2 is provided at the end with a circumferential groove-shaped recess 2 '. The tensioning band is pulled through the tensioning rod 7 over the rubber jacket and tensioned. This constricts the rubber jacket 1 and fills the groove-shaped recess 2 'aua. The end cap 5 covers the end of the rubber jacket 1 and thus closes the wide stretching roller.

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According to FIG. 2, the tube section 2 has a groove 2 ' ¹ on the other side on its circumference. Daa clamping band 6 with the SpannachloB 7 clamps the rubber jacket 1 ^{firmly on the grooves 2 M of the} pipe section 2 and ensures an absolutely safe and permanent seal. The end cap 5 has the same function as shown in FIG.

According to FIG. 3, the pipe section 2 is conically stepped 2 ^IM at the end and running forward. The clamping ring 6 with the clamping lock 7 in turn clamps the rubber jacket 1. The end cap 5 has the same function as before.

GemMB FIG k of BphzrabiognCtt 2 uieiet on his AuBenmatel at the point at which the SpannschloB 7 rests on the rubber jacket 1, one flattening 2 ^{M >>} on. The tensioning strap 6 is held together under tension by the tensioning lock 7.

The handling of the subject of the innovation according to Figures 1 to i * is as follows.

The rubber jacket 1 is secured at both ends by means of the thin, narrow tension band a & _φ made of metal or plastic, provided with a tension lock 7, which is used to tie up packages and boxes, against the ring-shaped steps or recesses 2 ', 2 ", 2'"the income statement. Here dee happens

8th -

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Tension the tensioning band 6 with a suitable commercially available tensioning device. Because the tensioning straps S bB are pressed into the rubber jacket 1 during tensioning, the end caps 5 can finally be screwed onto the end segments 2 without any lubricity. All you have to do is cover the ends of the rollers cleanly.

The counterpart of the innovation is the following: who commit in that

a) an absolutely safe and permanent seal between the end segments and the rubber cover unu pulling out the rubber cover from the EndkaRBn or the end bracket even with one Shrinkage of the rubber jacket is excluded;

b) did implementation is very simple and time-saving;

c) there are considerable price advantages.

Claims (5)

- 9 -Protective claims 1. Spreader barrel with rubber jacket for flexible textile, Paper Dd. Plastic webs, consisting of a fixed, straight or curved or a number flexible resilient elements formed axis, on the individual, supported by roller bearings Rahrabschnitte with closely spaced, and ujctei the spreader roller is closed at the end by an end cap each provided with a screw thread or similar means, characterized in that the rubber jacket C) ends in the area of the end caps (5) by a metal ad. The tensioning strap (6) made of plastic and provided with a tension lock (7) is held in place. in such a way that the rubber jacket (1) is pressed onto the pipe section (P) at the end and the same is seated in a sealing manner. 2. Spreader bar according to claim 1, characterized in that the pipe section (2) has a circumferential, groove-shaped recess (2 ¹ ) on its outer jacket in the area of the end cap (5), the width of the recess (2 ¹ ) being approximately the width of the clamping band ( 6) corresponds. - 10 - - 10 - ■ 3. Brextatreckwalzβ according to claim 1, characterized in that the pipe section (2) is cylindrical on its outer surface in the region of the end cap (5) and encircling a groove (2 ¹¹ ) aufmeist, LJDbei the groove (2 ^M ) the width of the Tension band (6) corresponds. k. Breitstreckiijalze according to claim 1, dadur ^ 'i Ί ~ ~ denotes *, DAB, the stirring portion (2) on sßinem AuSenmantel in the region of the end cap a, forwardly extending conical graduation (2 ¹¹¹⁾ corresponding to etua the width of the clamping band (6) aufuieist. 5. BreitstreckuialzB according to claims 1 to '+, characterized in that the Rahrabschnitt (2) on sBinem outer jacket at the point where the turnbuckle (7) rests on the rubber jacket CD, flattened (2' ^M > is formed «