| 摘要 |
Apparatus for automatically stretching a tubular knitted article slipped on a support shape, comprising: - means for picking up a limited portion of the article (4) fabric in correspondence of a side edge of the shape (5), holding said article and finally releasing it by means of an elastic, flat-nose, normally closed gripper (1); a pneumatic cylinder (2) having a horizontal axis and its rod fixed to the base of said gripper (1) to allow it to be moved from and to the shape (5); - a cam (3) having double straight profile to operate the activation, that is, the opening and respectively the closing of said gripper (1) in cooperation with two pivots each of which is idly fitted into a corresponding jaw of the gripper (1) so as to result sideway projecting therefrom and thus engaging a relevant profile of the cam (3) during the activation of the gripper (1): the said cam (3) being interposed between the gripper (1) activating cylinder (2) and the stocking (4) supporting shape (5); - an abutment element (6) interposed between the head of said gripper (1) and the relevant driving cylinder (2) to limit the operating return stroke of the gripper (1) and exert a thrust in the relevant jaws able to produce an opening moment for the release of the stocking (4). (Fig. 1A).
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