| 摘要 |
<p>The base has a supporting frame for thereservoir, and, successively overlying this frame: a shaft for accommodating the lids of the reservoir and for rotating the latter in the process of its manufacture, and a welding unit accommodated on a support beam. The shaft is journalled on posts mounted on the base, for rotation about a horizontal axis. The supporting frame has a curvilinear surface for the meridional flaps, the shape of this surface corresponding to the curvilinear surface of the flaps, the frame being carried by vertical guides to bring the meridional flaps to the lids of the reservoir.</p> |
