DE454616C - Roller with a continuous steel axle - Google Patents

Description

Roller with a continuous steel axle. There are already suggestions for the production of rollers with a continuous steel axis and replaceable work jacket became known, but due to their unnatural working conditions none Could give success. The roller shells were pressed onto the axles under high pressure, thereby creating harmful stresses in the jacket material. While of the company, d. H. during use, the roller is sometimes very hot, whereby the 'material of the' jacket is weakened even more in its resilience and finally the coat bursts.

Another disadvantage of the known designs is that the Tooth-like '%' projections of the axis in the projections provided on the jacket do not engage properly and hardly properly either can be brought into engagement, so that only one or the other edge attacks. This disadvantage is mainly to blame for such rolls never had or could have had any practical success because of the poorly bearing tooth-like Projection of the axis exerted a disruptive effect on the roll shell. The shattering The more tightly the cloak was pressed on, the faster the cloak came in higher and faster the heating of the mantle took place.

Attempts have also been made to slit the roller axis in a cross shape, to create a more elastic support. But since this edition of the roll barrel it offered too little firm hold in its endangered places and there were also shifts was exposed to the occurring torsional forces, it could make the emergence more dangerous Do not prevent tension in the roll barrel, which could easily lead to roll breakage.

According to the invention, these inconveniences are eliminated by the axis in the jacket by the amount of expansion that occurs when the axle is heated up is made as the bore of the jacket, and that per se known limiting pins or thumb, which can be provided with limiting ribs, rotatable in the axis are used to always adapt automatically to the attack surfaces of the jacket, «- while on the outside a disc embraces the thumbs or the limiting pins and connects and supports one another.

Figs. I to q. the drawing show two exemplary embodiments such rollers according to the invention in longitudinal and cross-section.

Fig. I shows the ball d in section with fully inserted Steel axle b.

Fig. 2 is a section along line 2-2 of Fig. I.

The axis b carries rectangular thumbs c, which engage in the axis h by means of round lugs d, while the rectangular part c engages in the roll shell o. The thumbs have delimiting ribs c, against. (The jacket a was supported. Above these ribs e, a disk f engages, which depending on the ridiculous demands placed on the roller, then the thumbs c are unfolded or shrunk onto them. The disks r connect to them Position the thumbs c one below the other and support them. Limiting pins g are inserted on the right-hand pin of the axis u, which in turn are also closed by a washer f1 Fig. 3 shows a roller design similar to Fig. 1, only here the disk h replacing disk f1 engages over the jacket a and is either pressed or shrunk onto it Better grip when reaching over have ribs hl. liz, which engage in corresponding recesses in the roller jacket. The overlapping surfaces can also be conical n is the worn roll diameter corresponding to d, so that when lathing - the roller lt ring part need never be weakened, the disk 1s can be used again for new rollers.

Fig. 4. shows a section along the line 4-4 of Fig. 3 with a special one Execution of the thumb. Here the thumbs are divided, and that is cap-like part cl pushed over part dl, as is the side disk f and the shrink ring j encompassing the roll barrel are carried out separately.

Uni the shattering of the To prevent jacket, according to the invention, the occurring during operation Warming taken into account and the axis turned so much smaller in diameter, than its expansion due to heating. In this «way we will anyway a complete tight fit is achieved without, however, the sheath in its strength to endanger. In order to protect the brittle INZetall of the `ZTalzenmantels even more, the part of the jacket at the points of application of the thumb is not expedient or but only very slightly hardened. The> transition from the -,% - cichen to the hard part the coat should be done gradually in order to avoid any risk of explosion.

Claims (1)

PATEN TANSPRÜ CIIE i. Roller with continuous steel axis and replaceable working jacket, characterized in that the axis (U) in the jacket (d) is made smaller than the bore of the jacket by the amount of expansion that occurs when the axis is heated, and that per se known limiting pins (g) or thumb (c), which can be provided with limiting ribs (e), are rotatably inserted into the axis in order to always adapt automatically to the attack surfaces of the 1lantels, while a disc (f) outwards the thumbs (c) or the limiting pins (g) comprises and connects and supports one another. z. Roller according to claim i, characterized in that the thumbs are designed in two parts, one part (dl) sitting firmly in the axis, while the other part (cl) is pushed over the first (dl) and through the disc (f) is held in position. 3. Roller according to claim r, characterized in that the connecting and retaining disc (f) are provided with a collar (h) which encompasses the roll shell and acts as a visual inspection, the collar (h) having ribs (hl) which engage in corresponding recesses in the roller jacket, or the collar and jacket are conical at the overlapping surfaces. .4. Roll according to claims 1 and 2, characterized in that the roll shell (a) is little or not hardened at the parts which form the points of application of the thumbs (c), whereby, as is known, the transition from the soft to the hardened part must take place gradually .