Abstract:
A strain gauge sensor for measuring the unit weight of a moving sliver in a textile machine, comprising a support rigidly mounted on a sliver output end of the textile machine and a trumpet carried by the support for outputting a condensed sliver. At least one strain gauge is carried by the support and responsive to strain imposed on the support by movement of sliver through the trumpet. Electrical circuit is means carried by the support in electrically communicating relation to the strain gauge, and includes a power supply and amplifier carried by the electrical circuit on the support for outputting an excitation voltage and a Wheatstone bridge for receiving the excitation voltage from the power supply and applying the excitation voltage to the at least one strain gauge, receiving a feedback signal from the strain gauge and outputting a control signal corresponding to the weight of the sliver passing through the trumpet.
Abstract:
A device for handling fibers is described. The device comprises:an apparatus for forming a column of fibers of uniform density;an apparatus for metering fibers from the column;conveying apparatus, the conveying apparatus serving to convey the metered fibers from the metering apparatus;a comb device, the comb device being spaced from the metering apparatus and in association with the conveying apparatus;a removing device, the removing device being located such that it removes the fibers from the comb device and introduces the fibers into a device for transporting the fibers from the fiber handling device.
Abstract:
A fiber metering device adapted for feeding fiber to a fiber utilizing assembly. The device comprises a first fiber feeding unit and a spaced apart second fiber feeding unit. The fiber feeding units are spaced apart so that the second unit is downstream with respect to the first unit. The feeding units are independently driven at relatively variable fiber feeding speeds. Each feeding unit includes a weight transducer means sensitive to the weight of fiber being fed by that unit. The speed of each feeding unit is controlled in accordance with the weight of fiber sensed by its associated transducer means.
Abstract:
The present invention relates to a charger for feeding a carding machine with a nap of textile fibers as regularly as possible, characterized in that the receptacle apron (5) is continuously driven at variable speed controlled by the cell (7 ) for control of the thickness of the fiber mat (4) on the spiked apron (6), in that the receptacle (2) is also provided at its outlet, above the receptacle apron (5), with a screed (8) for regulation of the flow of fibers and in that a regulator drum (9) of variable speed coacts with the spiked apron (6) for the regulation of the mat of fibers carried thereon.
Abstract:
An apparatus for receiving loosely aggregated filamentary material, such as Easter grass, and producing, at a substantially uniform rate, weighed charges of the filamentary material. The apparatus comprises scales to weigh the charges to preselected weights, blowers to provide a stream of the filamentary material to the scales, conduits to convey the material from the outlet of the blowers to the scales, and a magazine which receives material charges at irregular intervals and dispenses the same charges at a substantially uniform rate.
Abstract:
An apparatus for generating measuring values representing the thickness of a coherent fiber material, includes an optical device having a light transmitter emitting a light beam and a light detector, an arrangement for guiding the fiber material between the light transmitter and the light detector and a device for processing signals generated by the light detector. The light detector comprises an image processing CCD member aligned with the light beam emitted by the light transmitter.
Abstract:
Bales of filamentary material are separated into weighed charges of the material by disintegrating the bales in a rotating drum to produce tufts that are passed to a picking chamber wherein a toothed roll strips individual filaments from a supply roll formed from the tufts and passing the filaments to scales upon which the charges are accumulated. Each time a charge is accumulated on a scale, air is blown across the scale to discharge the scale. The charges are delivered to a magazine having a plurality of vertically stacked chambers, each chamber underlain by a movable gate, through which the charges are passed sequentially to be discharged at a fixed schedule from the lowermost chamber. Spikes mounted on the interior of the drum are shaped to loosen portions of bales entering the drum, tear tufts from such portions, and finally deposit the tufts into an air stream passing through the drum to expel the tufts. Between the drum and the picking chamber, the tufts are treated with an anti-static compound in a chamber through which the tufts fall while a mist of the compound is injected into the chamber. Above the picking chamber, the tufts enter a deflection tower and are deflected to one side or the other of the picking chamber to concentrate the supply roll at one side of the picking chamber and filaments to each of two scales are drawn from opposite sides of the picking chamber.
Abstract:
Bales of filamentary material are separated into weighed charges of the material by disintegrating the bales in a rotating drum to produce tufts that are passed to a picking chamber wherein a toothed roll strips individual filaments from a supply roll formed from the tufts and passing the filaments to scales upon which the charges are accumulated. Each time a charge is accumulated on a scale, air is blown across the scale to discharge the scale. The charges are delivered to a magazine having a plurality of vertically stacked chambers, each chamber underlain by a movable gate, through which the charges are passed sequentially to be discharged at a fixed schedule from the lowermost chamber. Spikes mounted on the interior of the drum are shaped to loosen portions of bales entering the drum, tear tufts from such portions, and finally deposit the tufts into an air stream passing through the drum to expel the tufts. Between the drum and the picking chamber, the tufts are treated with an anti-static compound in a chamber through which the tufts fall while a mist of the compound is injected into the chamber. Above the picking chamber, the tufts enter a deflection tower and are deflected to one side or the other of the picking chamber to concentrate the supply roll at one side of the picking chamber and filaments to each of two scales are drawn from opposite side of the picking chamber.
Abstract:
An improved fiber glass bushing control system. One aspect of the system has a weighing means for weighing complete collections of glass fiber strands produced from forming from a bushing through attenuation, a monitoring means for the time of attenuation at constant strand speed and a program computer means that receives signals from the weighing means and the monitoring means. The program computer means has a means for establishing a database of the weights and times, a means for determining the throughput of the glass from the bushing from the weights and times, a means for determining average throughputs and including these averages in the database, a means for comparing the average throughputs to a standard set throughput, and a means for initiating an adjustment to the main bushing temperature controller, when the average throughput deviates from the set point throughput by a value greater than the sensitivity factor of the bushing. The system has circuit means for carrying the adjustment signals to the controller and to the bushing for a temperature change. The system can have a second bushing controller connected across two sections of the bushing to regulate relative current flow in the two sections and the program computer means additionaly has means for determining the difference in throughputs between collections of strand produced from each section of the bushing at the same time and placing these difference values in the database, and a means for averaging the difference values, and a means for comparing the difference values to determine if they are other than the value of zero, and a means for adjusting the segment bushing controller to achieve average difference value in throughput other than zero.
Abstract:
A feed duct (1) for feeding textile fibers to an associated processing machine is disclosed which includes adjustable wall elements (22, 23) to vary the width of the filling chamber (5) of the duct and discharge a fiber web of corresponding width. The adjustable wall elements (22, 23) are displaceable parallel to the side walls (31, 32) of the filling chamber and include lateral wall elements (22a, 23a) which are bent and extend through the side walls to also act as holding elements. Setting elements (26, 28 and 27, 29) adjust the setting of the wall elements and the chamber width. In a duct feed having an oscillating plate 39, adjustable wall elements are provided as double wall elements (43, 44) with a pivotal wall part (45, 46) carried between the double walls of each element. An inclined edge (51) of the double wall elements allows oscillating plate (39) to swing with respect to the adjustable width duct for compaction of fiber. A column of fibers may be provided over the entire height of the filling chamber having a uniform width.