Flexible, multi-head, heavy duty stitcher with automatic...

D - Textiles – Paper – 05 – B

Patent

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Details

D05B 59/00 (2006.01)

Patent

CA 2526441

A sewing machine is provided having an automatic bobbin loader. The automatic bobbin loader includes a hook assembly (14) mounted beneath the sewing plane having a bobbin receiver (20). The hook assembly is driven by a drive shaft (22), and is moveable from a first, operating position, to a second, loading position. A bobbin loader is mounted adjacent to the hook assembly in the second position. The bobbin loader includes a suction tube (42) that removes any remaining bobbin core. The bobbin loader then loads a replacement bobbin from the bobbin loading assembly (46) into the bobbin receiver, prior to the hook assembly being returned to the operating position. Additionally, in order to sew through thick material, the needle is carried by a needle carriage (60) which moves in time with the material being sewn to maintain the needle generally vertical throughout the time it is in the material being sewn.

L'invention concerne une machine à coudre ayant un chargeur automatique de bobine. Le chargeur automatique de bobine comprend un ensemble crochet monté sous le plan de couture ayant un récepteur de bobine. L'ensemble crochet est entraîné par un arbre d'entraînement et est mobile d'une première position de fonctionnement à une deuxième position de charge. Un chargeur de bobine est monté adjacent à l'ensemble crochet dans la deuxième position. Le chargeur de bobine comprend un tube d'aspiration qui retire tout cylindre de bobine restant. Le chargeur de bobine charge alors une bobine de remplacement en la prélevant de l'ensemble de charge de bobine pour l'introduire dans le récepteur de bobine, avant que l'ensemble crochet ne revienne en position opérationnelle. Pour la couture d'un matériau épais, l'aiguille est portée par une fraisure d'aiguille qui se déplace simultanément avec le matériau à coudre afin de maintenir l'aiguille généralement verticalement pendant toute la couture du matériau.

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