PNEUMATIC TIRE WITH A RADIAL CARCASS

The invention refers to pneumatic tires with a radial carcass from individual meridianen Kabeloder wire sheets, those, in circumferential direction of the tire seen, in distances from each other arranged is, whereby the ends of these Kabeloder wire sheets are bent in the range of the tire beads in tire circumferential direction. With tires of this kind provided so far the production of the carcass goes out generally with at least one situation or “folding” of parallel and soft cables covered with rubber. The situations or “foldings” are then rolled up everyone for itself on a manufacture drum for the figuration of of a tubular tubing body, whose page ranges are then umgefaltet around circular steel cores, which form the resistant bulge trembling resisting of the tire. I0 the umgefalteten lateral ranges of the carcass situations exhibit cables, which are likewise radially arranged and which are edges of these lateral ranges by the cut off ends of the cables limited. It is well-known that the cut off cable ends are a cause of separation phenomena in the enterprise, above all, if they lie in ranges, which are subjected to repetitive bending. From the DE-OS 2214553 manufacturing processes are well-known, with which for Radiaireifen not with IS kalandrierten cable situations, but from a passing cable is proceeded, which is formed to meridianen sheets from each other beabstandeten, whereby these sheets are connected by cable parts extending into the Wüisten, which form the bulge armourings at the same time. A kind of such of manufactured tires does not exhibit going through bulge armourings and the carcass possesses also no radially turned over Seitentefle with cut off cable ends. Such tires prove as extremely resistant in the bulge zones. The invention aims at an advancement of the latter type of tire and plans that with a pneumatic tire of the kind initially specified everyone consists the carcass forming meridianen Kabeloder Drahthögen in each case of individual Kabeloder wire section, whose ends in this direction, bent in tire circumferential direction, exhibit running extensions, which form the bulge armouring in actually 2s well-known way by overlay with the appropriate extensions of neighbouring Kabeloder wire sheets. Pneumatic tires according to invention are just as resistantly as admitted of this type to manufacture but substantially more simply. On the basis the designs now the invention is more near described. The Fig shows. 1, 2 and 3 a cross section and a broken open opinion of a tire according to invention and its carcass in the rolled up condition, Fig.4, 5 and 6 cross sections by different versions of the bulge armouring, Fig.7 and 8 a scrap view of variation in type of the carcass and the same in the rolled up condition and/or in the cross section, Fig.11 a fourth execution of the carcass and Fig.12, 13 and 14 a fifth execution of a carcass according to invention in the rolled up condition, on average and/or in aufge= brochener opinion. In the designs are the wires or cables of the carcass because of the better overview with exaggerated large distances represented. In reality the carcass according to invention consists of many more wires or cables, which are much more closely together arranged. A tire in accordance with the Fig.l, 2 and 3 possesses a carcass --10-- from neighbouring meridianen cable sheets, which lie all in the same halftoroidal level. The Seheitel of the carcass is with a belt --11-- strengthened and the whole arrangement is with sidebands --12-- and the run meeting --13-- covered. The edges of the carcass --10-- are into the bulges --14-- embedded, which serve for the seat of the tire on the rim of wheel. Each sheet of the carcass consists of a soft piece of cable, with their entering 4s the bulges are bent whose end and form parts, which extend in circumferential direction in the bulges. In the drawn example the carcass consists of two groups of meridianer sheets, u.zw of the sheets --10a, 10b, 10c,…. -- (full-drawn) and from the sheets --10a', 10b', 10c'…. -- (broken drawn), whereby all lie these sheets in a common surface and the sheets alternates a group with the sheets of the other group. The ends --15a, 15b, 15c--, the sheets of the group --10a, 10b, 10c-- extend to an extent extent and end in the Wüisten to also --A, b and C-- marked places (Fig.2). The ends --15a', 15b', 15c',…. -- the sheets of the other group --10a', 10b', 10c',…. -- extend to the opposite extent extent, as from the Abwicldung is to be recognized after Fig.3, - 3 - NR, 342440 and they end to places hlnterelnanderHegenden likewise on --a', b', c',…. -- in the bulges. The Umfangstefle --15-- the neighbouring sheets lie side by side thus over a certain length and form a longitudinal bundle of cables, which bundle forms the Wulsbewehrung. Fig.4 shows increases the structure of a bulge --14--: in the carcass the meridianen the sheets in a common surface lie side by side as the cables of a textilen carcass, against what see the ends of the sheets to something in the bulges to unfold and their extent parts --15-- overlap to a bundle, which replaces a usual Wulstkern. This bundle is embedded into the tire rubber and/or the rubber of the bulge, which holds thus the bundle together. Appropriately this rubber possesses a high modulus of elasticity, in order to improve the co-operation of the arrangement. The firmness of the arrangement hangs itself of the number of tons covering and by the rubber connected longitudinal pitches --15-- the sheets off. This firmness can be affected thus with the firmness of the cables and the module of the connecting rubber. It was shown that the length of the bent cable parts --15-- with at least 8% of the bulge extent is sufficiently limited. The arrangement of the parts --15-- can be subjected to some changes. They can form a compact bundle, or a bundle, whose cross section is lengthened in vertical or horizontal direction. The bundle can be supplemental also by additional reinforcement elements, like Textilbänder or rubber bands, in order to increase or it a cross-sectional shape favorable for the mounting plate at the rim give the firmness of the bulge. Fig.5 shows another structure of the bulge, with that from the sections --15-- existing bundles zusätz CH by extent turns of a cable --16-- is supplemental, whereby these turns itself, on the basis of the bundle --15--, to a flat spiral gestelten themselves, in the tire flank from the outside, at the carcass --10-- lying close, up-winds. This spiral is into the hard rubber --17-- embedded, to the one filling profile --18-- attaches, whereby these two elements are reduced after the height too in the cross section and matched the contour of the carcass running out. The whole thing is covered and/or in this embedded of the bulge the forming rubber and/or the rubber of the tire side panel. Fig.6 shows a bulge structure, which is similar after Fig.5, with however several Kahelspiralen --16-- , those are intended in hard rubber --17-- are embedded and by the filling profile --18-- are extended. The spirals --16-- can be made of the carcass forming the cables, or also from cables of other nature, approximately from steel. The Fig.7 and 8 show, similarly as the Fig.2 and 3 a tire, with that the meridianen the sheets of the carcass --10-- with bent sections --19-- into the extent parts --15-- turn into. With that finally racks carcass the bent sections cross --19-- in a Übergangszone --20-- between bulge and tire side panel. By suitable calculation of the length and inclination of the sections --19-- the height of the Übergangszonen can be varied, in order to lend to these ranges of the carcass a firmness for the transmission from torques arising in the enterprise to. The bent sections --19-- can also a curvature exhibit. The Fig.9 and 10 show another execution form of the invention, with that the carcass --10-- from only one group of meridianer sheets is formed, whereby the ends --16-- all in same sense taken off are and in a flat bundle lie side by side. For the cables are appropriate thus in a cylindrical surface. The ends --15-- are initial in a zone --OFF-- bent and running and then bent and then in a second zone --BC-- arranged, where it with the circumferential direction a small angle --E-- include, so that the parts --15-- closely together-lie. The flat bundles are then back-folded in itself, or around an auxiliary core --21-- put, that in each bulge --14-- is inserted, so that itself the parts --15-- wind around this core in form of a screw of large upward gradient. The width of the bundles is geäwhlt preferably in such a way that the edges in the bulge, formed by the cable ends --14-- remain and do not see not into the tire side panels extending. Preferably the cut off ends of the cables up to reaching the carcass are in the point B (Fig. 10) struck back. In this case a in the best way suitable auxiliary core possesses --21-- itself upward a tapering shape. In this way the cut ends of the cables in an inert zone of the tire and the filling profile are --22-- tapers itself likewise in his lower cross section, so so that this training can follow the changing bending loads in the enterprise. The carcass in accordance with Fig.ll possesses two groups each other alternating sheets --10 and 10 '--, as it is with the execution form after the Fig.1 and 3 the case, but are the ends --15.1 and 15.2-- these sheets opposite curved, so that the cables of the carcass in the completed condition the form No. 342440 IO rubber mixture lets go through covered and/or with casing machines. a S or a Z exhibit. The ends --15.1 and 15.2-- crosses each other under Kroßer inclination in the lateral bundles and forms a 2fache situation from cables. The lateral flat bundles become then either directly against the lower parts of the carcass --10--, or around the auxiliary cores --21-- with the filling profile --22--, or around itself a hard rubber profile which can be tapered upward changed. The Fig.12, 13 and 14 show up one from the Fig.9 and 10 deriving other execution form, with which the lateral flatten, from ends next to one another and curved--15--to itself turned and a spiral armouring core for formed bundles over --23-- represent for each bulge. In addition the so nmgeschlagenen bundles can by a passing auxiliary core --24-- strengthened its, that of a filling profile from hard rubber --22-- one towers above. For the carcass --10-- and the other construction units of the tire used cables can from textiles of usual kind, like Rayon, PP, polyester etc. be formed, or materials with high modulus of elasticity preferably become, as glass cable, carbon cable and metal cable use, whose single wires are very fine and to which cables lend from there a large softness. The cables are generally preparatory with view of a good adhesion of the rubber and them can in advance be dressed in raw rubber, by one the cables by usual 2G