TH46292B - Methods and tools for aligning tires with the same axial support wheel rim. - Google Patents

Abstract

The invention DC60 aims to achieve high-precision axial alignment of a tire with its rims by eliminating the effect of the outer surface of the tread. The radial inner end position of the inner rim section 23 of the tire 22 was detected by a photoelectric sensor 91 at four points spaced along the circumference, and the deviation between the center axis of the tire 22 and the center axis of the pair of rims 15 and 21 was determined. The inner rim section 23 of the tire 22, which is subject to the detection of the inner end position, is a section that undergoes virtually no dimensional and shape changes even after prolonged use. Therefore, the aforementioned deviation can be determined with high precision. Thus, high-precision center alignment of the tire 22 with rims 15 and 21 is achieved. The invention aims to achieve high-precision axial alignment of the tire with its rims by eliminating the effect of the outer surface of the tread. The position of the inner end along the radius of the inner rim section 23 of the 22 tire was detected by photoelectric sensor 91 at four points spaced along the circumference, and the deviation between the center axis of the 22 tire and the center axis of the 15, 21 rim pair. The inner rim section 23 of the 22 tire, which is subject to the detection of the inner end position, is a section that hardly changes in its dimensions and shape even after the tire has been driven (i.e., used) for a long time. Therefore, the deviation described above can be determined with high accuracy. Thus, the center alignment of the 22 tire with the 15, 21 rims can be performed with high accuracy.

Claims (6)

1. A method for aligning a tire (22) with a common axis to the rims (15,21) is performed by the following steps: detecting the position of the radial inner end of the tire (23) using the detection path (91), and aligning the center axis of the tire with the center axis of the rims by activating the motion path (71) at the time of receiving the matching signal from the processing path so that the tire moves over a distance equal to the calculated positional difference. It is characterized by the detection of the position of the radial inner end of the tire at three or more points separated in the circumferential direction, and by calculating the deviation between the center axis of the tire and the center axis of the center axis of the pair of rims which can move in convergent and displacement directions using the processing path (94), based on the positional information of the detection path and the result of the detection path at the detection step. 2. Method for aligning the tire with the rim in alignment with the same axis as claim 1, where the position of the radial inner end of the inner side of the tire is determined by a trajectory of four points spaced 90 degrees along the circumference. 3. Tools for aligning the tire with the rims in alignment with the same axis, comprising: a detection path for locating the radial inner end of the tire at least three separate points in the circumferential direction; a processing path for calculating the positional difference between the tire's center axis and the center axis of the rim pair, which can move closer together and further apart, based on the positional information of the detection path and the results of the detection path; and a movement path for aligning the tire's center axis with the rim's center axis, which can be operated at the time of receiving the matching signal from the processing path, causing the tire to move a distance equal to the calculated positional difference. 4. Tools for aligning the tire with the rim in alignment with the same axis as claim 3, which provide a number of detection paths equal to the number of positions of the inner end along the radius of the inner edge of the outer tire being detected. 5. A device for aligning the tire to the rim in alignment with the same axis as either claim 3 or 4, which causes the tire to move in a plane perpendicular to the center axis of the tire by a trajectory when the position of the inner end along the radius of the inner edge of the outer tire is determined. 6. Tools for aligning the tire to the rim in alignment with the same axis, as per any one of claims 3 through 5, where the tire is a used tire subject to retreading, and the tools are to be used with a fine polisher for removing the tread from the used tire.