Abstract: A printer having a hopper without shaft which performs a print operation on a roll of continuous paper. Detection marks are provided in flanges provided in supported members removably attached to the continuous paper, and the presence/absence of the detection mark in a detection position of an optical sensor is determined. A rear end of the continuous paper in the hopper is determined if the result of determination of the presence/absence of the detection mark during conveyance of the continuous paper is the same. A passage length from the position of the determined rear end of the continuous paper to a print unit is equal to or longer than a predetermined maximum print size. By this arrangement, the rear end of the continuous paper can be detected without upsizing the apparatus and without complicating the structure, and the continuous paper can be effectively utilized without causing shortage of the continuous paper during execution of print operation.
Abstract: Device and process for the automatic elimination of the defective start and end portions from packages of yarn fed to the units of an automatic winder using the same members thereof for reattaching the ends eliminating said portion from them, by suction with the suction nozzles for capturing and moving the ends, for a predetermined length and then joining its ends according to the normal reattachment of the yarn.
Abstract: A yarn dye tube includes end portions having male and female elements for aligned stacking of multiple tubes. The female end portion includes a cylindrical ring having non-perforating recesses defining reduced wall portions having a thickness of at least one-half of a wall thickness of ring. Each recess also includes arcuate ends for reducing stress concentrations. The diameter of the inner surface of the female element is greater than that of the inner surface of the ring defining an annular distance therebetween. A radially extending shoulder at the terminal end of the ring contacts the male element of an adjacent tube in a stack of aligned tubes. A fillet at the terminal end of the first end portion ring extends over a substantial portion of the annular distance for reducing stress concentrations.
Abstract: A method of winding the yarn traveling at a work station of a spinning bobbin winding machine or of a bobbin winding machine from a yarn source onto a take-up bobbin (4). After each yarn interruption, the yarn end is unwound from the take-up bobbin (4), a yarn joinder reconnects the yarn source and the take-up bobbin (4) and the winding process is then continued if a tolerable yarn joining location is present. Upon the occurrence of each yarn interruption, the amount of yarn wound since the last yarn joinder is determined. If such amount of yarn is determined to be less than a predetermined amount of yarn, a sufficient amount of yarn is unwound and separated from the take-up bobbin (4) to include the last-occurring yarn joining location in the separated yarn section. This results in an optical improvement in the quality of the finished textile product.
Type:
Grant
Filed:
December 14, 2001
Date of Patent:
October 28, 2003
Assignee:
W. Schlafhorst AG & Co.
Inventors:
Wilhelm Oehrl, Bert Hurtz, Wolfgang Dörner, Gudrun Doss
Abstract: A method of operating a textile machine for producing cheeses, at whose workstations (1) yarn (2) is unwound from supply bobbins (3), checked, cleaned of yarn defects and wound onto larger-volume cheeses (4) during which the yarn defects occurring the winding process in a given yarn length are registered. When a predetermined number of yarn joinders is exceeded within a predetermined reference yarn length, the winding process is stopped and the yarn length with the excessive number of joinders, already wound onto the cheese, is removed from the cheese (4).
Abstract: A winding head of a cheese-producing textile machine, having a device for the accurate determination of the length of yarn traveling through a measuring head (7), and having an evaluating device for accumulating the yarn lengths that have passed. The winding head has a device for determining yarn length portions which are removed in the course of a yarn connecting process. The evaluation device is adapted to subtract the removed yarn lengths from the total length of the yarn (2) which has passed through the measuring head.
Abstract: The winding station of an automatic bobbin winding machine has a splicing device (7) for the connection of yarn ends following a yarn break. Wet splices are created by the introduction of a liquid. A capacitive sensor (13) is arranged downstream of the splicing device (7), by means of which a dielectric change is detected when the moistened yarn passes. The capacitive sensor (13) is connected with an evaluation unit (12), which generates a signal when the change falls below a predeterminable threshold value DSW (32) because of an insufficient water content. The signal trigger a cleaning cut. The signals are used for monitoring of the yarn quality and monitoring the ability of the splicing device (7) to function. The invention permits the creation of wet splices of very low moisture content, without causing malfunctions in the winding process or reducing the yarn quality.
Abstract: A method of operating a textile machine for producing cheeses, at whose workstations (1) yarn (2) is unwound from supply bobbins (3), checked, cleaned of yarn defects and wound onto larger-volume cheeses (4) during which the yarn defects occurring the winding process in a given yarn length are registered. When a predetermined number of yarn joinders is exceeded within a predetermined reference yarn length, the winding process is stopped and the yarn length with the excessive number of joinders, already wound onto the cheese, is removed from the cheese (4).
Abstract: In a process for the manufacture of dipped tire cord fabrics made of organic fiber cords, two organic fiber cords before treatment, each formed by subjecting two or more bundles of organic multifilaments to cable twisting and ply twisting, are connected to each other in a particular connection apparatus to form a continuous cord having a joint portion, and a tire cord fabric is made from many organic fiber cords inclusive of the above continuous cord having the joint portion and subjected to a dipping treatment and subsequent heat treatment under particular conditions.