| 摘要 |
<p>Vent valve to be used in venting bores of vulcanization moulds, especially for the tread profile area, consisting of a valve sleeve, which has a hollow cylinder shape with its bottom (5-5) equipped with an opening for draining the air off, a valve insert (4), consisting of an elastic shank (4-3), formed by a flat spring having a shape resembling an inverted letter U, which is at one end equipped with a surface (4-2) on which the plate (4-1 ) is attached and the free ends are shaped to elastic arms (4-6), which are changing to a clamping part (4-5) formed by two incomplete half circles, which are pressed apart from each other by the flat spring of the elastic shank (4-3) and of the elastic arms (4-6) to form the valve opening delimiter. The length (H) of the valve insert (4) with the plate (4-1 ) in an unloaded state is greater by the displacement (p) than the length (h) of the valve sleeve (5).</p> |
