Variable-amplitude corrugated winding method for cap strips
A crown and amplitude technology, which is applied in the field of variable amplitude corrugated winding of the crown, can solve the problems of uneven prestress of the crown, uneven force of the crown, and affecting the service life of the tire, so as to improve the service life, Overcoming the effect of uneven prestress
Active Publication Date: 2021-10-08
未来轮胎科技(江苏)有限公司
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Problems solved by technology
[0004]
To sum up, when the tire blank sulfur expands, the cap strips at different positions of the tire will have the problem of uneven prestress, and then the problem of uneven stress on the cap strips at different positions will be more serious when the tire is inflated. If this technical problem is not handled properly, it will seriously affect the service life of the tire
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The embodiments described below are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] The cap layer 200 of the present invention is a belt layer formed by spirally winding the cap strips 10 formed by one or more cords coated with glue in the circumferential direction, so as to be different from ordinary belt layers. The cap ply of the present invention can better restrain the circumferential stretching and deformation of the pneumatic tire, reduce the heat generated during the rolling of the tire, reduce the phenomenon of empty shoul...
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The invention provides a variable-amplitude corrugated winding method for cap strips. The cap strips are spirally wound on a belt drum or a common belt layer arranged on the belt drum in multiple sections in a corrugated shape through a winding head to form a cap layer, wherein a plurality of waveform cap strips in the same section on the cap layer are wound and arranged into shapes with the same wavelength and the same amplitude, and the waveforms in the adjacent sections are arranged into shapes with the same wavelength and different amplitudes. In the cap layer wound by the method disclosed by the invention, the length of the cap strips at the first side edge position and the second side edge position are shorter than that at the middle position, that is to say, the cap strip at the crown part with larger pre-stress in the cap layer is longer, and the cap strip at the shoulder part with smaller pre-stress in the cap layer is shorter, so that the technical problem that the pre-stress of the cap strips at different positions is not uniform due to vulcanization expansion of a tire is solved, and the service life of the tire is greatly prolonged.
Description
technical field [0001] The invention relates to the technical field of tire manufacturing technology, and in particular to a cap strip variable-amplitude corrugated winding technology used in passenger radial tires and all-steel radial tires. Background technique [0002] Bridgestone Co., Ltd. published the patent technology of "A Pneumatic Tire" on November 18, 2009, which describes a kind of cords with different elastic moduli on the crown part and sidewall part of the tire. Cords 7 with a larger modulus of elasticity are arranged on the large crown part, and cords 6 with a smaller modulus of elasticity are arranged on the sidewall part under less force, so as to avoid irregular deformation of the tire and improve the uniformity of the tire. The process of making the belt layer in this way is complex and costly. [0003] Guizhou Tire Co., Ltd. disclosed on September 6, 2019 the patented technology "A method for preparing all-steel radial tires by "S"-shaped spiral winding...
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IPC IPC(8): B29D30/30
CPCB29D30/30
Inventor 田宝玉
Owner 未来轮胎科技(江苏)有限公司