An automated sewing device for automatically sewing a first end portion of a first base material with a second end portion of a second base material, comprising:
- a table;
- a sewing machine provided on said table, said sewing machine including a sewing needle and a feeding means, said sewing needle and feeding means being adapted to feed and sew together said first and second base materials in a sewing direction;
- said table including a setting area where said first and second base materials are to be set in vicinity of said sewing needle;
- a control means for keeping said first and second end portions respectively of said first and second base materials in alignment with each other and supplying the thus-aligned first and second end portions toward said sewing machine, thereby causing said first and second base materials to be sewn together by said sewing machine along an outer contour of said aligned first and second end portions, with a seam created in the first and second base materials, so that a constant margin is given between said seam and said outer contour, said control means including:
- a control unit;
- a sensor means electrically connected with said control unit, said sensor means being adapted to detect dislocation of either of said first and second end portions, such that, upon detecting said dislocation, said sensor means sends a detection signal to said control unit;
- and
- a guide roller mechanism for guiding either of said first and second base materials in a direction orthogonal with said sewing direction in which said first and second base materials are sewn together by said sewing machine, said guide roller mechanism being electrically connected with said sensor means and including:
- a guide means for separating said first base material from said second base material and guiding each of said first and second materials along said sewing direction;
- a guide roller means;
- a rotation drive means for causing rotation of said guide roller means;
- and
- a transfer means for transferring said guide roller means toward and away from said setting area of said table,
- with such an arrangement that, responsive to a signal sent from said control unit which has received said detection signal, said guide roller mechanism is operated such that said transfer means works to transfer said guide roller means toward and away from said setting area, while at the same time, said rotation drive means works to cause rotation of said guide roller means in one of normal and reverse directions so as to cause displacement of said either of said first and second base materials in the direction orthogonal with said sewing direction, whereby said either of said first and second end portions is returned to a fixed point in said sensor means, whereby both said first and second base materials are sewn together along the respective end portions thereof, with the constant margin given between the seam and the outer contours of said first and second end portions.