Abstract:
A weaving machine 1 comprises a lay beam 29 which by means of drive elements is movable between a rear position 29a, in which the introduction of the weft thread into a warp arrangement can be realized, and a front position 29b, in which a beat-up against a beating-up edge 32 of the respective introduced weft thread can be effected. The drive elements comprise two or more crankshaft parts rotatable along the width direction of the weaving machine and according to a common rotational center line 77. These are situated in stands comprising intermediate sections 59, 60, 61 and 62, which respectively also comprise a lay sword 24 which is mounted rotatably on a lay sword shaft 25 and is connected to a connecting rod belonging to the intermediate section. The intermediate section comprises at least one individual motor 66 turning the crankshaft part thereof. The weaving machine 1 comprises or is connected to a control system 64 provided with a rotary motion control unit 65 and arranged to control, via amplifying elements 67, the motors 66 of the intermediate sections for mutual synchronous rotary motion of the crankshaft parts of the various intermediate sections. The control system can comprise a computerized main control system 64 connected to a master motion control unit 65, which in turn is connected to servo amplifiers 67 forming part of the intermediate sections and connected to motors 66 in the form of servo motors provided with reduction gears. Should one wish to increase the synchronization or the coordination of the actions of the modules or intermediate sections upon the lay beam, one or more mechanical shafts 81′-83′ with lighter weight and small dimensions can be used. The invention enables substantial weight and space reductions to be made, inter alia by virtue of the fact that a large and heavy shaft with mountings and gearboxes can be avoided.
Abstract:
A modular weaving machine includes a loom chassis and a plurality of modular warp units. The warp units are each configured for supporting a plurality of removable bobbins thereon, the bobbins being pre-loadable with a plurality of warp threads. The loom chassis is configured to receivably support the warp units thereon, so that the warp threads are disposed in parallel, spaced relation to one another, extending in a downstream direction. A plurality of shedding actuators are coupled to the loom chassis and configured to form a shed with warp threads of each of the warp units. A weft insertion module is configured to insert a weft thread through the shed.
Abstract:
A terry weaving method and a terry loom for carrying out the method. Subject matter of the terry weaving method is that a slay travel shortening does not result during the carrying out of partial beat-ups for the formation of a weft thread group, and thus the original weft thread insertion window remains maintained. The terry loom has a servo drive (7) that displaces the reed support shaft (4) in the direction of the shed forming means by at least the pre-beat-up distance (VD) while maintaining the basic stroke H of the reed (11) before the forming of the weft thread group, and that reverses or undoes the displacement by at least the pre-beat-up distance (VD) after the forming of the weft thread group.
Abstract:
The invention relates to a terry weaving method and a terry loom for carrying out the method. Subject matter of the terry weaving method is that a slay travel shortening does not result during the carrying out of partial beat-ups for the formation of a weft thread group, and thus the original weft thread insertion window remains maintained. The terry loom has a servo drive (7) that displaces the reed support shaft (4) in the direction of the shed forming means by at least the pre-beat-up distance (VD) while maintaining the basic stroke H of the reed (11) before the forming of the weft thread group, and that reverses or undoes the displacement by at least the pre-beat-up distance (VD) after the forming of the weft thread group.
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:
A direct drive for a loom reed includes a linear motor carrying out a linear oscillating motion, or an arc segment motor carrying out a pivoting oscillating motion, or a circular coaxial motor carrying out a pivoting oscillating motion. The circular coaxial motor has a hollow shaft rotor arranged within a hollow shaft stator, and may further have an additional hollow shaft stator arranged within the rotor in a sandwich motor construction. The arc segment motor and the linear motor may similarly have a rotor member sandwiched between two stator members. Two motor units can be provided respectively above and below the weaving plane to drive the reed together. With these measures, the driving force is increased, yet the drive arrangement is confined to the available installation space.
Abstract:
The weaving machine transmission (1) for the control of the stroke of a sley shaft (8) comprises a roller lever (4) and a sley shaft (8) between which there is an active connection, with the roller lever (4) and the sley shaft (8) being arranged so as to be pivotal and mutually rotatable about a common axis (A), with a joint arrangement (6) forming the active connection between the roller lever (4) and the sley shaft (8) and with the joint arrangement (6) being designed such that the length of the active connection can be varied by means of an adjusting apparatus (13) which acts on the joint arrangement (6).
Abstract:
The weaving machine transmission (1) for the control of the stroke of a sley shaft (8) comprises a roller lever (4) and a sley shaft (8) between which there is an active connection, with the roller lever (4) and the sley shaft (8) being arranged so as to be pivotal and mutually rotatable about a common axis (A), with a joint arrangement (6) forming the active connection between the roller lever (4) and the sley shaft (8) and with the joint arrangement (6) being designed such that the length of the active connection can be varied by means of an adjusting apparatus (13) which acts on the joint arrangement (6).
Abstract:
A power loom, particularly for weaving of sieves or screen fabrics, has a fabric batton, a fabric batton drive, a shaft drive, and a shuttle drive. The fabric batton drive includes a program-controlled servo motor, and a transmission located between the servo motor and the fabric batton.
Abstract:
A gripper loom is equipped along its reed or slay beam with a plurality of compartments formed by separation walls extending in parallel to each other and in parallel to the lower shed forming warp threads which pass through these compartments. The upper edges of the separation walls are aligned with each other and with a guide surface of the gripper rods so that the upper edges form extension guide surfaces for the gripper rods. Thus, the lower shed forming warp threads do not interfere with the proper motion of the gripper rods.