Abstract: A control technique is capable of adjusting a weight of a pile fabric by adjusting consumption of a pile warp at a proper range with a more simplified system. In a pile loom, a tolerance relative to a value associated with consumption of the pile warp is set, and the value associated with consumption of the pile warp is measured during a pile weaving period. If the value associated with consumption of the pile warp exceeds the tolerance, the weaving condition parameter associated with the weight of the pile is corrected in a direction to approach a target value of the weight of a pile fabric.

Abstract: There is provided a control technique capable of adjusting a weight of a pile fabric by adjusting consumption of a pile warp at a proper range with a more simplified system. In a pile loom, a tolerance relative to a value associated with consumption of the pile warp is set, and the value associated with consumption of the pile warp is measured during a pile weaving period, wherein if the value associated with consumption of the pile warp exceeds the tolerance, the weaving condition parameter associated with the weight of the pile is corrected in a direction to approach a target value of the weight of a pile fabric.

Abstract: There is provided an apparatus capable of maintaining a pile warp tension at a desired value even under a high speed operation of a pile loom in a pile warp tension controller of the pile loom. The pile warp tension controller controls a biasing force relative to a tension roller in synchronization with a relative motion between a reed and a woven cloth which is performed in correspondence with a pile formation, and also controls the biasing force relative to the a tension roller so as to apply a tension in a prescribed period including at least a beating time for pile formation within a period where the relative motion is performed, which tension is lower than an applied tension in a period other than the period where the relative motion is performed, and the tension roller is elastically deformable in the range of a winding of the pile warp.

Abstract: A take-up control system for controlling a take-up motion included in a loom controls the take-up motion according to the diameter of a roll of cloth being woven on the loom so that a proper tension is exerted on the cloth. A take-up controller included in the take-up control system controls a torque-controllable motor for driving a cloth roller to take up the cloth in the roll on the basis of an electric signal representing the diameter of the roll according to a control program to exert a properly adjusted tension on the cloth. The take-up controller can also control an actuator for pressing a pressing member against the circumference of the roll according to weaving conditions, or weaving conditions and the diameter of the roll, to apply a properly adjusted pressure to the roll by the pressing member.

Abstract: A tuck-in apparatus for producing a fastened tuck-in-selvage includes a tuck-in nozzle for injecting air into a warp shed from the outside of a warp array in order to fold back a weft yarn end toward a cloth fell. A selvage-fastening nozzle is disposed adjacent to the cloth fell outside the warp array for causing the weft yarn end folded back by the tuck-in nozzle to extend along the cloth fell. Timing control is provided to provide a first period of air injection from the tuck-in nozzle and a second period of air injection from the selvage-fastening nozzle so that the beginning of the second period is later than the beginning of the first period, and the second period ends before the warp shed is closed.

Abstract: A split reed has a weaving reed formed by successively arranging dents respectively provided with recesses forming a weft yarn guide path having a back surface, and an auxiliary reed respectively provided with recesses forming a weft yarn guide path having a back surface. The weaving reed and the auxiliary reed are attached to a slay or the respective dents of the weaving reed and the auxiliary reed are formed so that the back surface of the weft yarn guide path of the auxiliary reed is included in a plane behind a plane including the back surface of the weaving reed with respect to the cloth fell of a fabric on the loom when the weaving reed and the auxiliary reed are attached to the slay.

Abstract: A take-up control system for controlling a take-up motion included in a loom controls the take-up motion according to the diameter of a roll of cloth being woven on the loom so that a proper tension is exerted on the cloth. A take-up controller included in the take-up control system controls a torque-controllable motor for driving a cloth roller to take up the cloth in the roll on the basis of an electric signal representing the diameter of the roll according to a control program to exert a properly adjusted tension on the cloth. The take-up controller controls an actuator for pressing a pressing member against the circumference of the roll according to weaving conditions, or weaving conditions and the diameter of the roll to apply a properly adjusted pressure to the roll by the pressing member.

Abstract: A split reed has a weaving reed formed by successively arranging dents respectively provided with recesses forming a weft yarn guide path having a back surface, and an auxiliary reed respectively provided with recesses forming a weft yarn guide path having a back surface. The weaving reed and the auxiliary reed are attached to a slay or the respective dents of the weaving reed and the auxiliary reed are formed so that the back surface of the weft yarn guide path of the auxiliary reed is included in a plane behind a plane including the back surface of the weaving reed with respect to the cloth fell of a fabric on the loom when the weaving reed and the auxiliary reed are attached to the slay.

Abstract: A tuck-in apparatus including a tuck-in nozzle 9 for injecting air into a warp shed 19 from the outside of warp arrays 1 in order to fold back a weft yarn end 18 toward a cloth fell 2, characterized by: a selvage-fastening nozzle 10 disposed adjacent to the cloth fell 2 outside the warp arrays 1 for causing the weft yarn end 18 folded back by the tuck-in nozzle 9 to extend along the cloth fell 2, wherein air injection from the tuck-in nozzle 9 and that from the selvage-fastening nozzle 10 are independently controllable, and wherein air injection start timing of the selvage-fastening nozzle 10 is later than that of the tuck-in nozzle 9, but is set to be put before the warp shed is closed. The tuck-in apparatus is designed to provide a satisfactorily fastened tuck-in selvage.

Abstract: Compared with the method for performing tuck-in operation at each weaving cycle, the method of the present invention makes it possible to increase the number of revolutions of the loom at high speed, to decrease the number of maintenance operations needed for the tuck-in device and to decrease power consumption. Moreover, compared with the method for performing collective tuck-in operation by bringing all wefts inserted into each repeat together, it is possible to improve external appearance of the selvedge of the pile fabric. According to the tuck-in selvedge setting method in a tuck-in device of a shuttleless loom for towel of the present invention, when a pile fabric is woven, tuck-in operations for ends of a plurality of wefts inserted into one repeat for forming a pile fabric are performed by a plurality of times.

Abstract: In a selvedge forming device, the operation condition for operating at least one of the selvedge forming elements contributing to the selvedge formation is set in advance in correspondence to a weaving condition, and the selvedge forming device is operated in accordance with the weaving condition and the operating condition as set in advance, while the weaving process goes on.

Abstract: A weft holding device transfers a weft to a tuck-in device that tucks and end portion of the weft cut by a weft cutter in a shed formed by warps. The weft holding device has a slit opening backward toward a reed, the warps and the cutter to receive a portion of the weft beaten up by the reed, and a releasing hole connected to the closed end of the slit so as to jet air toward the open end of the slit to move the portion of the weft toward the open end of the slit. Air is jetted through the releasing hole in response to a command signal provided by a loom upon the detection of a mispicked weft to move the mispicked weft to be beaten up backward away from a cutting region in which the weft cutter cuts the weft.

Abstract: In a selvedge forming device, the operating condition for operating at least one of the selvedge forming elements contributing to the selvedge formation is set in advance in correspondence to a weaving condition, and the selvedge forming device is operated in accordance with the weaving condition and the operating condition as set in advance, while the weaving process goes on.

Abstract: A pile forming apparatus of the type where piles are formed in cloth through movement of the cloth between a first position wherein piles are formed and a second position wherein piles are not formed. The apparatus includes a driving mechanism operated in synchronism with rotation of the main shaft of a loom, a transmission mechanism, and a cloth moving device, wherein the motion of the driving mechanism is transmitted to the cloth moving member by the transmission mechanism. The transmission mechanism includes a pair of swing levers connected with each other by a connection body such that the connecting position therebetween is made variable. One of paired swing levers is driven by the driving mechanism and the other is coupled with the cloth moving member.

Abstract: A picking method and apparatus for a multicolor picking loom to provide changes in the number of rotations of the loom in order to pick a desired weft. In particular, a signal generation unit outputs a weft selection signal for each weft corresponding to a picking number, and a number-of-rotations selection signal also corresponding to a picking number. A plurality of number-of-rotations patterns are preset and each pattern corresponds to one of the number-of-rotations selection signals. In addition, a plurality of picking conditions are preset which correspond to the particular weft selection signal for the selected weft and to one of the number-of-rotations patterns. Of the plurality of picking conditions, the picking condition is selected which corresponds to the weft selection signal and the number-of-rotations selection signal, which allows the desired and selected weft to be picked.

Abstract: In a tuck-in selvage forming device for a high speed loom, a weft holder with a cutter, hereinafter referred to as a "capturing-cutting head", is connected via a transmission system to a drive source of the loom. The capturing-cutting head reciprocates between an operative position and a stand-by position in synchronism with the running of the loom. By operation of a spring inserted in the transmission system, the capturing-cutting head is biased toward the operative position. A stopper activated by a faulty weft signal disenables the spring, so that the capturing-cutting head is held in the stand-by position, i.e., so that reciprocation of the capturing-cutting head is prevented despite continued operation of the drive source.

Abstract: A pile warp tension controller for controlling the pile warp yarn tension control mechanism of a pile fabric loom controls the position of the tension roller of the pile warp yarn tension control mechanism or the torque acting on a tension lever supporting the tension roller according to the operating state of the pile fabric loom so that the tension of the pile warp yarns is regulated at an optimum value. The control mode of the pile warp tension controller is changed over from a tension control mode to a speed control mode in forming loops of the pile warp yarns to ensure the satisfactory formation of loops having a predetermined loop length and to prevent defective loops.

Abstract: A warp tension control method by which the let-off motion of a loom is controlled to regulate the tension of the warp yarns. A force of the same dimension as the controlled variable, namely, the tension of the warp yarns, is applied to a mechanism supporting the tension roller of the let-off motion for displacement under the control of an electric control system to control the warp tension at a high accuracy.