| 摘要 |
<p>With planned sequential movements a mechanical pliers (1) is coaxially aligned with seat (5) of capsule (13) wherein the empty bobbin (14) of the lower thread of a sewing machine engages, caused to move forward until it engages with said capsule and to move backward, taking the same out from its seat, aligned with a collection basket (19) wherein capsule (13) and the empty bobbin (14) are unloaded, shifted and aligned coaxially with a loading cartridge (21) of capsules (13) containing bobbins (14) loaded with wound thread, caused to move forward until it engages and hooks on to the first of said capsules with loaded bobbins, then to move backward with said capsule with the bobbin, realigned coaxially with seat (15) of the sewing machine, caused to move forward up to the engagement of the capsule with the loaded bobbin in seat (15), and lastly is caused to move backward and placed in resting position, on prior release of the capsule with the loaded bobbin in the aforementioned seat. The operation is performed with full automation of the replacement stages of the lower thread bobbins with loaded bobbins.</p> |
