Abstract: The object of the present invention is to obtain a contact pressure control device capable of carrying out feedback control enduring a practical use by inventing a pressure detecting means and the employment structure of the same. The contact pressure control device of the take-up winder comprises a bobbin holder 5, a contact pressure roller 11 contacted against the bobbin B set on the bobbin holder 5, a slide supporting mechanism (s) for supporting the contact pressure roller 11 elevating or descending to the machine main body 2, and a contact pressure cylinder 13 freely adjusting the contact pressure of the contact pressure roller 11 and the bobbin holder 5. Moreover, a load cell 16 is provided directly below one contact pressure cylinder 13 located between a pair of slide supporting mechanisms (s), (s).

Abstract: The object of the present invention is to obtain a contact pressure control device capable of carrying out feedback control enduring a practical use by inventing a pressure detecting means and the employment structure of the same. The contact pressure control device of the take-up winder comprises a bobbin holder 5, a contact pressure roller 11 contacted against the bobbin B set on the bobbin holder 5, a slide supporting mechanism (s) for supporting the contact pressure roller 11 elevating or descending to the machine main body 2 , and a contact pressure cylinder 13 freely adjusting the contact pressure of the contact pressure roller 11 and the bobbin holder 5. Moreover, a load cell 16 is provided directly below one contact pressure cylinder 13 located between a pair of slide supporting mechanisms (s), (s).

Abstract: To provide a tension control system in a false twist texturing machine for producing a doubled yarn wherein the target tension values or allowable ranges of filament yarns y1 and y2 prior to doubling can be individually set for each filament yarn and wherein based on the results of the detection of the tension of the filament yarn prior to doubling, each false twister T for the corresponding filament yarn is individually and independently controlled in such a way that the tension of each filament yarn has the set target tension value or falls within the set allowable tension range. A target tension value and an allowable tension range can be individually set for each filament yarn prior to doubling so as to accommodate the yarn's material, thickness, and structure, and the false twister can be individually and independently controlled based on the results of the detection of the tension of each filament yarn prior to doubling.

Abstract: A false twister which nips a yarn-between crossed belts and impart twist and feed to the yarn includes a sensor for detecting an untwisting tension of the yarn portion located downstream of the belts and the untwisting tension detected by the sensor is controlled to a target value of an untwisting tension by adjusting a contact pressure between the belts or a running speed of the belts.

Abstract: A bobbin sorting device including a color sensor for distinguishing trays on which different kinds of bobbins are conveyed, characterized in that a metal plate is attached to each tray having one of different colors, and a detector is provided near the color sensor for detecting the metal plate.

Abstract: A traverse device in which rotary members each having yarn guide blades are arranged to be overlaid and rotated in the direction opposite to each other, and a traverse guide member is provided along the motion locus of the yarn guide blades, wherein the number of the yarn guide blades of the rotary members is differentiated, and the rotary speed is differentiated by a reciprocal number of the ratio of the number. The traverse of yarn and speeds of forward path and backward path are differentiated, and the number of windings between the forward path and the backward path is changed.

Abstract: There is provided a process for inspecting a splicer provided for splicing yarn ends upon the occurrence of yarn breakage or the like in an automatic winder, the process comprising the steps of, after splicing yarn ends, taking up the spliced yarn at a low speed and restraining the yarn on the yarn supply side to impart a predetermined tension to the yarn, detecting whether yarn breakage indicative of malfunction of the splicer has occurred, and, if the yarn breakage indicative of malfunction of the splicer has not occurred, cutting the spliced yarn, and re-splicing the yarn ends of the yarn thus cut.

Abstract: A spinning frame management method comprising putting an identification mark on a tray for conveying a spinning bobbin produced by each spinning unit of a spinning frame to a winding unit of a winder, reading the identification mark in transferring the spinning bobbins from the spinning unit to the tray and storing the spinning unit which produced the same bobbin, detecting defects in the yarn of the spinning bobbin in rewinding the yarn of the bobbin and reading the identification mark put on the tray mounted with the same bobbin, and inquiring into the defects of a particular spinning unit by using the stored information.

Abstract: The automatic inspecting apparatus for a yarn joining device comprises devices for judging, when more than predetermined times of measured results within the doffing process are recognized to be abnormal, such, as a defective spindle, for generating an abnormal signal when judged to be abnormal, for setting a joining button of the winding unit to a joining stop position in response to the abnormal signal, and for flickering a lamp associated with the winding unit in response to the abnormal signal.

Abstract: An apparatus for controlling rotation of a drum comprises a controlling device which controls, upon winding, an invertor such that a motor for driving the drum which is adapted to be contacted with and rotate a package may be rotated at an optimum rotational speed in accordance with winding conditions of each of winding units of an automatic winder and which controls, upon doffing, the invertor such that rotation of a package which is effected in order to wrap an end of a yarn of a package around a bobbin may be carried out by the drum.

Abstract: A steam setting system for steam setting a plurality of bobbins reduced by a fine spinning frame in which a steam setting apparatus comprising at least a pair of independent steam setting mechanisms is provided on the way of a bobbin feeder line connecting a fine spinning frame with a winder.

Abstract: The present invention provides a method of controlling yarn joining operation on the basis of signals provided by a slub catcher which generates a yarn breakage signal upon the detection of a slub during winding a yarn being supplied from a yarn supply bobbin on a take-up package. A change of a yarn supply bobbin for a new yarn supply bobbin and a yarn joining operation are conducted upon detection of the slub catcher whether a yarn breakage is occurred and/or detection of the yarn absence under what conditions.

Abstract: Various conditions for operation, in a machine frame which is constituted from a plurality of yarn processing units, of the individual yarn processing units are set by means of a memory card reading device which is electrically connected to the individual processing units over a bus line, and only by setting a memory card in which conditions suitable for a yarn to be processed are written in position into the memory card reading device, operating conditions of the individual processing units are set collectively.

Abstract: In the winding position of each winding unit there is provided a bobbin dislodgement preventing device adapted to come into abutment with part of a bobbin which is fed to the winding position as it is fitted upright on a tray with peg to thereby prevent the bobbin from coming off the peg.

Abstract: In an automatic winder, the tension device provided on each winding unit has a tenser in contact with a yarn to apply a resistance thereto, and a driving actuator of said tenser member, and each of the actuators provided on each winding unit is associated with a control device positioned separately from each winding unit, and adjustment of the tenser member is remote-controlled. The control device is used to vary the yarn tension in accordance with amount of yarn layer on a package, winding speed of a yarn and the like.

Abstract: A device for finding an end of a yarn whereby an end of a yarn connecting to a layer of the yarn on a bobbin is found and is inserted into a center hole of a bobbin. The device includes an air flow controlling plate located near an outer periphery of a layer of a yarn on a spinning bobbin and a compressed air injection nozzle located in a gap between the air flow controlling plate and the yarn layer of the spinning bobbin.

Abstract: A method of changing bobbins in lot for an automatic winder comprises the steps of hindering fully wound winding units from further winding yarns when an amount of a residual yarn supply becomes smaller than a predetermined value, and discharging bobbins with residual yarn from the fully wound winding units to deliver the same to the other winding units being in winding operation.

Abstract: A winding controlling method for an automatic winder whereby the upper limit value for the yarn cut frequency per one spinning bobbin is set as an upper limit value for the yarn cut frequency while the number of successive spinning bobbins for which no yarn cutting occurs is set as a lower limit value for the yarn cut frequency, and winding operation of a winding unit is stopped at a point of time when either the upper limit value or the lower limit value for the yarn cut frequency is detected on the winding unit during winding.

Abstract: A package feeding method and apparatus for a yarn twisting machine having a large number of two-for-one twisters of two stage yarn supply type. A package is fed after an end of yarn of the package has been wrapped in several turns of a yarn layer non-existing portion of the package.

Abstract: An automatic winder and a two-for-one twisting machine are interconnected by a yarn supply package exchanging device for a set of two packages arranged in two upper and lower stages which is located between the automatic winder and the two-for-one twisting machine. Doffed packages at the winder side are put on a yarn support fitted on a tray by the yarn supply package exchanging device and are transported and supplied to a spindle of the two-for-one twisting machine.