摘要:
The present disclosure is generally directed towards calculating a remaining length of a cable on a cable reel. Generally, a first distance between a top edge of a first flange of the cable reel and a top portion of the cable remaining on the cable reel is received at a processor. A winding characterization indicating a configuration of the cable wound on the cable reel is also received at the processor. Dimensions of the cable reel are also received at the processor and include: a diameter of the first flange, a cable reel traverse distance, and a diameter of a drum of the cable reel. The cable reel traverse distance indicates a distance between the first and second flanges of the cable reel. The remaining length of the cable on the cable reel is calculated based on the first distance, the winding characterization, and the dimensions of the cable reel.
摘要:
The direct roving winder has a machine frame which carries at least one winding spindle for the production of one or more roving packages and a cross-winding device. An apparatus for contactless detection of the actual diameter of a roving package is also provided which has a laser sensor with a transmitter and a receiver for laser radiation in which the distance of the laser sensor from the package surface is ascertained by means of the radiation from the transmitter to the package surface and back to the receiver. The laser sensor can be mounted in stationary manner on the machine frame or on the displacement device. The laser sensor can be arranged in a housing with an opening for the passage of the laser beam, in which there is a free space between the laser sensor and the inside of the housing into which compressed gas is introduced which exits through the opening.
摘要:
Method for on-line process control of yarns wound upon reels intended for yarn package classification and sorting into homogeneous classes of predetermined quality standards. This method consists in the determination of the specific weight of the yarn bundling on the reel. This value is utilized to check the yarn package compliance with preset standard values of the technological properties, in particular of the dyeing affinity.
摘要:
The presence of residual yarn on textile bobbins is recognized by a device capable of optically sensing and distinguishing yarn from a supporting bobbin or tube, which device is movable lengthwise along the bobbin or tube to perform a sensing operation. The sensing device includes a light source, a transmitter lens for focusing the light rays onto the surface of the bobbin, and a photooptic detector having a receiver lens for receiving the light rays reflected off the bobbin surface. The transmitter and receiver lenses have respective optical axes which, during sensing movement, are oriented to intersect one another at the bobbin surface, are oriented relative to the bobbin such that a line bisecting the axes deviates from a line intersecting the vertex of the axes perpendicular to the bobbin surface by at least ten degrees (10.degree.), and also lie in a common plane oriented at an angle of at least about ninety degrees (90.degree.) relative to the path of movement of the sensing device. Such orientation and arrangement of the transmitter and receiver lenses avoids direct reflection of transmitted light rays into the receiver lens, which minimizes any influence on the sensing operation by structural differences along the length of the bobbin.
摘要:
The method and apparatus optically scan the size of a yarn package of a spinning bobbin with a plurality of light transmitters and light receivers and derive defined control processes in accordance with the ascertained size. Bobbins with yarn packages are moved in a given direction of motion at a predetermined speed between a plurality of paired and mutually opposite light transmitters and light receivers disposed one above the other with respect to the given direction of motion for placing at least some of the light receivers into a shadow. At least one of the light transmitters and light receivers are switched on and off in cycles at a predetermined rhythm, order and duration. A signal is delivered to a computer from each of the light receivers placed into a shadow in each cycle by the bobbin. The volume of the applicable bobbin is calculated with the computer from a given time required for scanning one bobbin and from the signals from the shadowed light receivers delivered during the given time. The volume of the tube of the bobbin is subtracted from the volume of the bobbin for determining the volume of the yarn package. Defined control processes are derived and the bobbins are assigned to at least one of specific work stations and specific method steps, as a function of the volume of the yarn package.
摘要:
A method of predicting final yarn package diameter (D) during winding of yarn onto the package. The yarn is to be wound onto the package for a known period of time (TD) to obtain the final yarn package diameter. The method comprises the steps of: measuring the time (TS) for the package to grow to a known diameter (DS); predicting yarn package diameter using the correlation:D=square root [k1+k2(TD/TS)]wherein k1 and k2 are empirically determined constants.
摘要:
An improved bobbin winding method comprising variable-duration interventions for restoring yarn continuity which are implemented in accordance with a cycle divided into a first bobbin braking part and a second yarn joining part. Between the commencement of the two parts of the cycle there is interposed a delay the duration of which varies as a function of the angular displacement of the bobbin carrier arm.
摘要:
A system is described for venting the gas line of an air sensing device used to determine package build on a winding device for winding strand to prevent inaccurate readings of the air sensor caused by moisture. The venting system is operated through a solenoid switch to send air through the main air sensing channel in the reverse direction when the winder is stopped for package replacement.
摘要:
Means associated with a yarn package building mechanism such as a winder automatically to assure that the package is built to a predetermined diameter, thus assuring that such packages are efficiently used in subsequent processes. The invention provides a simple, economical attachment which may be placed on existing winders and other package builders without major change therein. The mechanism incorporates a knife which is engaged by the oscillating thread as it is level wound onto the package, the knife being raised as the package is built, so that finally the thread engages the knife and is cut, thus stopping the building of the package.