| 摘要 |
<p>A tubular casing (1) carries at the front a catching unit (2) and a stopping and releasing element (3) for a piston (4) which is pushed by a spring (5) against an end cap (6) bearing on the casing. A return spring (7) is arranged between the piston and the end cap, which end cap is provided with air inlet slots (36) for the pressure chamber (17). A cage (47) screwed in a connection sleeve (15) and provided with slots (53) on its contour extends in the suction chamber (16). The suction nozzle (48) provided with a unidirectional valve (56) is screwed at the end of the cage. When not in operation, the pressure cap (9) is positioned on the nozzle and acts, in the engagement position with the end cap (6), as a tension member for the piston (4) of which the tube (25) is engaged in the retainer ring (22) and is locked by a slight return motion. If the sucking nozzle (55) is sealingly applied to an object and the retainer ring (22) swings by pressure on the triggering lever (21), the piston (4) moves suddenly backwardly under the action of the spring (5). Thus the object is sucked by the nozzle (55) along the valve (56) until it enters the collector housing. </p> |
