Tyre evenness tester

Abstract

A tire uniformity machine is provided to prevent axes of rims from being misaligned while shortening a measurement cycle by installing a rim width adjustment unit in a first spindle. A tire uniformity machine includes an upper rim(2) for supporting and holding an upper bead section of a tire(1) and a lower rim(3) for supporting and holding a lower bead section of the tire(1). The upper rim(2) is detachably attached to a lower end of an upper spindle(5). The upper rim(2) is oppositely aligned with respect to the lower rim(3) by means of lower and upper spindles(4,5) in such a manner that axes of the upper and lower rims(2,3) are aligned in the same line. The lower and upper spindles(4,5) are installed on a top frame(6) and a base frame(8), respectively. The top and base frames(6,8) are supported by an installation frame(7).

Description

technical field [0001] The present invention relates to a tire uniformity testing machine for inspecting tire uniformity by rotating the tire while supplying compressed air. Background technique [0002] In general, a tire uniformity testing machine clamps the upper and lower bead portions of the tire from both sides with the upper and lower rims respectively, and then supplies compressed air into the tire to check the uniformity of the tire when the tire is rotated together with the upper and lower rims. At the same time, the tire uniformity testing machine constituted in this way, in order to adapt to the form of multi-variety and small-scale production of tires with various bead widths produced in the same factory, it is hoped that tires with various bead widths can be inspected on one device. . [0003] Therefore, in the prior art, the proposal of the following structure is proposed, that is, under the lower spindle on which the lower rim is mounted concentrically, an i...

AI Technical Summary

Problems solved by technology

However, since the lock shaft is inserted into the mandrel, there is an unavoidable gap between the two. Therefore, there is a problem that the measurement accuracy is adversely affected due to eccentricity.

For this problem, the gap can be reduced as much as possible, but due to the limitation of machining accuracy and assembly accuracy, it is impossible to reduce the gap enough to prevent eccentricity

Furthermore, in the structure of No. 11-223571, before inserting the lock shaft into the mandrel, in order not to cause damage when the two come into contact, the speed must be sufficiently reduced, and there is a problem that the cycle time is long.

Images