摘要:
Un procédé et un appareil de couture d'un tissu sont utilisés por former un tissu rectangulaire aux bords cousus, tels qu'un tissu de lavage. Des pièces brutes d'un tissu rectangulaire (52) sont alignées sur la table de l'appareil avec une machine à coudre en surjet (13). La machine à coudre coupe les bords du tissu, replie le bord coupé et le coud le long d'un côté. Chaque pièce de tissu se déplace selon des axes X et Y. A mesure que le tissu se déplace selon l'axe X à une ou des vitesses superficielles prédéterminées, la machine à coudre coupe, replie et coud un des côtés du tissu. Lorsque le tissu qui se déplace selon l'axe X arrive à un point où la machine à coudre est adjacente à un coin du tissu, un commutateur (46') est activé pour commencer à faire tourner la machine à coudre. Le tissu s'arrête pendant que la machine à coudre tourne autour du rayon réel du coin du tissu à la même vitesse ou aux mêmes vitesses que le tissu. Le tissu recommence ensuite à se déplacer dans le sens perpendiculaire Y opposé, pendant que la machine continue à se déplacer à la même vitesse superficielle. Lorsque la couture du bord extérieur du tissu est achevée, le fil restant est aspiré dans la machine et coupé, et le tissu achevé est éjecté.
摘要:
In a quilting machine two or more series of stitches are applied to the product, the product to which stitches have already been applied being moved forward and/or backward, even over a considerable distance, while the exact superposition of the fabrics is maintained. The machine comprises return or loose rollers (160, 170) which take up a portion of fabric (102, 103) unwound from rolls (108, 109). The process also permits continuous embroidery even very complicated embroidery.
摘要:
A pallet is provided for positioning workpiece components (e.g. a vamp V and quarter portions RQ, LQ of a shoe upper) in position for stitching the portions together, where, when the various components are in a flat condition, the regions (corresponding to the desired stitching paths) of the various components are not in overlapping relationship; that is to say, the pallet enables distortion of at least one of the components in order to bring the regions of the various components into such overlapping relationship. This is achieved by locating e.g. the quarter portions RQ, LQ in a flat condition in relation to a slot (14) of the pallet, which slot corresponds with the desired stitching path, and thereafter positioning the other component, e.g. the vamp V, with part of said region thereof in overlapping relationship with corresponding parts of the quarter portions, and clamping the vamp so that the parts of the regions thereof and of the quarter portions are maintained in overlapping relationship. Thereafter, the remainder of the regions of the vamp can be positioned by distorting the vamp manually, whereafter the vamp is clamped in distorted condition, maintaining the remainder of the regions in such overlapping relationship.
摘要:
Provided is a workpiece-moving device that is installed to a sewing machine without depending thereon, and does not share a drive unit's weight with a conveyance device, and can rotate without any restriction. The workpiece-moving device that translates and rotates a workpiece during operation of a sewing machine, includes a frame to be translated by a conveyance motor, a loading table on which the workpiece is put, the loading table being disposed rotatably to the frame and translated together with the frame, a drive unit that is installed so as to keep unchanged the drive unit's relative position to the sewing machine even when the frame and the loading table are translated by the conveyance motor's driving, and a transmission means to transmit driving force of the drive unit to the loading table to rotate the loading table. Furthermore, another workpiece-moving device includes a frame to be translated by a conveyance motor, a loading table on which the workpiece is put, the loading table being disposed rotatably to the frame and translated together with the frame, and a regulation means to regulate part of movement of the loading table translated with the frame, into movement in a direction different from a direction in which the whole loading table is translated.