Opener elastic swing upper pin

     The opener adopts elastic swinging upper pin, which can reduce the fluctuation range of jaw pressure. If the jaw pressure increases sharply for some reason, but due to the upper swing of the upper pin, the pressure on the yarn sliver does not increase as much as that of the delimiting pin; for example, when the jaw pressure is reduced, the sliver of the upper pin is loosened due to the lower swing of the upper pin. The pressure is not as much lower as the circling pin, so that the swing upper pin has the advantage of elastic self-adjustment to the jaw pressure. However, in order to make the elastic jaws control the fiber movement well and give full play to the elastic self-adjusting effect of the soil pins, it is not only still necessary to continuously improve the quality of the skin round, but also measures such as metal plating on the pins to prevent sticking to reduce The amplitude of fluctuation z should reduce the friction jJ moment Ms, so that the upper pin swings flexibly. The initial pressure and bending stiffness of the compression spring should be reasonably selected. Due to the transmission mode of the apron and the unevenness of the ring material, the size change of MhM2 is objective. Therefore, a reasonable choice of the initial pressure of the compression spring and 1 bending stiffness will become whether the swing upper pin can fully develop its elasticity. The key issue of mediation.