Method and apparatus for sewing fabric panels

D - Textiles – Paper – 05 – B

Patent

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D05B 11/00 (2006.01) D05B 37/04 (2006.01)

Patent

CA 2305905

A method and apparatus for sewing flange material to a fabric panel. The apparatus includes a sled (40) which pulls the fabric panel to and through the sewing machine (20). The apparatus also includes an edge guide (50), a moveable dolly (120), a wheel (80), and a cutter (70). The method includes the steps of sewing each edge sequentially, rotating the panel around the corners while cutting and sewing the corners, and measuring the thickness of the panel to space the rotating arm (30) from the table a specified distance less than the thickness of the panel. The method also includes the steps of adjusting the speed of rotation of the edge flattener (60) to produce a flattened corner without wrinkles or ridges. The apparatus also includes a device for automatically removing the fabric panel from the table after sewing.

L'invention porte sur un procédé et un appareil de couture d'éléments latéraux à un panneau de toile, de préférence un panneau supérieur ou inférieur d'une housse de matelas. L'appareil comporte: un traîneau (40) qui tire le panneau de toile vers et à travers la machine (20) à coudre; un guide de bords (50); un chariot mobile (120); une roue (80) ainsi qu'un tranchet (70). Le procédé de l'invention comporte les étapes suivantes: couture de chacun des bords l'un après l'autre; rotation du panneau autour des coins tout en les découpant et cousant; mesure de l'épaisseur du panneau de manière à espacer le bras rotatif (30) de la table d'une distance donnée inférieure à l'épaisseur du panneau. Le procédé comporte également un réglage de la vitesse de rotation des aplatisseurs (60) de bords pour produire un bord aplati sans fronces ni ondulations. L'appareil comporte en outre un dispositif retirant automatiquement le panneau de la table après achèvement de la couture.

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