[Purpose] To provide set points of a loom by taking into account requirement information to be weighted in a weaving factory.

[Constitution] The set point deciding apparatus comprises an input device for inputting input information, and an output device for deciding and outputting set points of operating conditions of a loom on the basis of the input information. The input information includes specification information of a cloth and requirement information on production of the cloth. The output device decides and outputs the set points of the operating conditions of the loom on the basis of the specification information of the cloth and the requirement information.

A cloth-fell position adjuster (10) is included in a loom (1) having at least one of a designated take-up motor (23) for rotating a surface roller (22) and a designated let-off motor (15) for rotating a warp beam (4), the at least one of the motors (15, 23) being provided independently of a main motor (31) driving a main shaft (26) of the loom (1). If the loom (1) has only one of the motors (15, 23), the adjuster (10) drives the motor (15, 23) independently of the main shaft (26) in response to a rotation command signal in a stopped state of the loom (1). If the loom (1) has both motors (15, 23), the adjuster (10) drives at least one of the motors (15, 23) independently of the main shaft (26) in response to the rotation command signal in a stopped state of the loom (1). The adjuster (10) includes a manual operating unit (40) generating the rotation command signal in response to a manual operation, and a drive controller (33) driving the at least one of the motors (15, 23) independently of the main shaft (26) by a rotational amount in response to one time the rotation command signal received from the manual operating unit (40). The rotational amount corresponds to an amount including a value of 1 pick or a pick value having one or more digits to the right of the decimal point.

A method for restarting a weaving loom after adjustment operations implying the shifting of the warp chain is disclosed, comprising the steps of stopping the loom, acquiring a first image of a fabric portion in a position fixed in respect of the loom, carrying out the adjustment and resetting the initial mechanical conditions of the loom, acquiring a second image of the fabric in said position fixed in respect of the loom, comparing the first and the second image against each other to establish the measure of any existing textile phase displacement, performing an adjustment on the mechanical members of the weaving loom on the basis of said measure of the weaving phase displacement to reset the initial textile condition and, finally, resetting the loom.

A loom(1) with a filling bar preventing function comprises two or more filling bar preventing devices (21) , and a filling bar prevention data setting unit (20) that gives set values of filling bar preventing parameters to the two or more filling bar preventing devices (21). Set values for degrees of filling bars to be given to the filling bar preventing devices (21) are stored beforehand in the filling bar prevention data setting unit (20). Filling bar information about an expected degree of filling bars is given to the filling bar prevention data setting unit (20). The filling bar prevention data setting unit (20) selects the set values corresponding to the filling bar information given thereto, and gives the selected set values respectively to the filling bar preventing devices (21). The loom (1) operates according to the expected degree of filling bars to prevent the formation of filling bars effectively.

A filling bar preventing method starts a loom (10) after completing a preparatory starting procedure including a cloth fell position correcting operation that corrects the position of the cloth fell (22) by turning a surface roller (28) included in the loom (10), and a warp tension adjusting operation that adjusts warp tension to a predetermined warp tension by turning a warp beam (14) included in the loom (10). The preparatory starting procedure is completed by completing the warp tension adjusting operation after the completion of the cloth fell position correcting operation.

A weft bar prevention technique in a loom which moves a cloth fell position by moving a motor 34, 38 prior to starting operation of the loom is characterized in that correction amount data of the cloth fell position is preset per warp tension, and at the time of preparing to start the loom, the correction amount of the cloth fell position is determined according to the warp tension in a state that the loom is stopped on the basis of the correction amount data, and the cloth fell position is corrected on the basis of the correction amount.

Aloom (1) is started for a normal weaving operation after shifting the cloth fell (9) of a fabric (8) on the loom (1) to a desired position by driving cloth fell shifting members (16, 19). A plurality of starting methods to be used selectively are set for the loom (1) The plurality of starting methods include a starting method that starts the loom (1) for a normal weaving operation after turning the main shaft (22) of the loom (1) in a normal or a reverse direction to a predetermined angular position different from an angular position where the main shaft (22) is stopped at the present. One of the plurality of starting methods is selected and is carried out to start the loom (1), and the position of the cloth fell (9) is adjusted according to a displacement, by which the cloth fell (9) is to be shifted, assigned to the selected starting method.

A loom restarting method restarts a loom stopped due to a loom stopping cause without entailing a "wavy set mark". When a loom is stopped due to a loom stopping cause entailing faulty picking, the loom restarting method provides a loom stopping command, withholds the loom from a picking operation during a braking period for braking the loom to stop the same in a weaving cycle subsequent to a weaving cycle in which the loom stopping cause occurred, reverses the loom to the weaving cycle in which faulty picking occurred, removes a weft yarn picked by faulty picking, and restarts the loom to resume a normal weaving operation. The main shaft of the loom is positioned, after removing the weft yarn picked by faulty picking, at an angular position at which a picking operation is possible in the weaving cycle in which the weft yarn picked by faulty picking was removed and the reed of the loom is not in contact with a weft yarn inserted in the cloth fell of a fabric on the loom, and then the loom is restarted.