摘要:
An electronically controlled weft yarn processing unit having a weft yarn feed system arranged separately in the vicinity of a weaving machine. The yarn feed system including at least one yarn feeder having a separate drive motor including an electronic control unit and monitoring and control elements. The yarn feed system further including a first input and indicating section connected to the electronic control unit of the yarn feeder for adjusting at least one functional parameter including a speed limit of the drive motor, a weft yarn length, a sensitivity of the monitoring and control elements, a reference value for a weft yarn store size, and a weft yarn store offset. The weft yarn processing unit also having an operation and control panel provided on a weaving machine. The first input and indicating section is located within the control and operation panel on the weaving machine. The first input and indicating section is connected to the electronic control unit of the yarn feeder via a data transmission link for transmitting at least one of the functional parameters to the yarn feeder.
摘要:
A device for controlling and monitoring a yarn processing system, which comprises an electronic main control unit and at least one yarn feeding unit, and inside of which a serial communications field bus system is provided with at least one field bus for carrying out communication. At least one bi-directional event line is provided outside the field bus system in order to transmit a time critical and/or time-specific, digital and anonymous event signal for carrying out and/or confirming events. For at least one communication participant connected to the field bus system, an event specific characteristic feature of respective event signal can be defined by the software side configuration inside the field bus system.
摘要:
A thread supplying device provided with a housing containing an electric motor wherein the stator is non-rotatingly mounted and the rotor is rotatingly mounted on a motor shaft. A thread guiding element is fixed to the motor shaft and a threader device which is fixed to the housing is also provided. When the motor shaft is in a set rotational position, the thread guiding element is physically associated with said threader device. A permanent magnet motor with pole cores provided with windings is integrated into the stator and permanent magnets are integrated into the rotor in such a way that the stator, rotor and the thread guiding element are arranged relative to the housing, in such a way that the motor shaft adopts the set position of rotation when the permanent magnet motor is devoid of electric current in a stable relative position of rotation, caused by magnetic forces, of the rotor in the stator.
摘要:
A weft-thread measuring feeder comprising a storage drum for a thread stock consisting of tangentially wound turns, from which a thread can be withdrawn overend in sections of a predetermined length. The storage drum includes a power accumulator which can be triggered from outside the storage drum for temporarily extending a spreading body which is positioned below the turns of thread stock and is defined circumferentially.
摘要:
A measuring melt felder (M) has a storage body (F) for the thread (Y) wound in turns (W) and at least one stopping device (S) outwardly associated to the storage body (F) that delimits a thread (Y) passage slot (A). A stopping element (P) capable of moving transversely through the passage slot (A) to a stopping position acts as a circumferential stop (B) for the thread (Y). The stopping device (S) has, associated with the stopping element (P), an adjustable thread clamp (K) for the thread (Y) held at the stopping element (P).
摘要:
A jet loom with a weft yarn insertion brake contains a braking element that is movable from a position of rest, on one side of the weft yarn, across the path of the weft yarn to a braking position. An electric motor, which drives the braking element, can be actuated during each insertion process of the loom. The electric motor preferably constitutes a fast response step or d.c. motor, whose direction of displacement can be switched and whose stroke can be individually adjusted for each set position of the braking element during the insertion process. Operation of the electric motor is controlled by an electronic control device. Programming within the control device can be modified between varying insertion processes so as to adapt the timing, stroke and driving direction of the electric motor. The driving force of the electric motor is transferred to the braking element by a constrained, inelastic link connecting the two. The electric motor is controlled so that the driving force exerted on the braking element is always greater in magnitude than the greatest possible reaction force of the deflected weft yarn.
摘要:
In the case of a method of holding in position a rotatably supported thread storage surface in a thread storage and feed device, in which a group of components defining the storage surface is rotatably supported on a shaft adapted to be rotated in a housing and in which a winding-on member circulates together with the shaft, whereas magnets prevent the group of components from rotating together with the shaft, a rotational vibration damping connection is temporarily established between the housing and the group of components while the shaft is rotating In a thread storage and feed device (F), which is provided with an advance member (6) adapted to be driven such that it carries out a wobbling movement, there are arranged an externally supported rotational vibration damping member (X) and an abutment (Y) which is provided on the advance member (6). When the device (F) is equipped with a stop device including a movable stop element (23), the stop element (23) constitutes the rotational vibration damping member (X, 50).
摘要:
The invention relates to a method for the control of a power-loom yarn feed device, whereby a drive motor for a rotating winding element is accelerated, decelerated or stopped, on demand, for yarn storage and, in order to avoid slack yarn during the stopping of the motor, the motor is independently driven slowly during a crawl phase, such that the motor is first stopped and then after stopping is slowly rotated in the crawl phase.
摘要:
The invention relates to a yarn feeding device with a stationary storage drum and an adjustable yarn pitch. The yarn feeding device comprises a motor housing, a drive shaft of a winding element and a storage drum. Said storage drum consists of meshing finger-shaped cages. The finger-shaped advance cage has an advance bushing that is eccentric and skew with respect to the drive shaft. A backturn detent for the take-up element is mounted in said advance cage. The backturn detent is furthermore interposed between the finger-shaped advance cage and the drive shaft.
摘要:
The invention relates to a pneumatic thread stretcher (T) for a rapier weaving machine or a knitting machine, in which the air current deflection surface (19) for deflecting the thread (Y, Y1) forms a seamless extension (12) of the inner wall of the linear guide channel, through which the thread runs. The invention also relates to a device (H) for changing the flow rate or the pressure of the air current along the deflection surface (19) of the pneumatic thread stretcher (T) between at least two different levels, in accordance with the operating cycle o the textile machine.