Abstract: An apparatus for transporting yarn packages wound on cylindrical tubes from a process where the yarn packages are produced by textile machines to a subsequent process without touching any yarn layer thereof. A conveyer belt is disposed along the lengthwise direction of the above-mentioned textile machine so as to receive the yarn packages from the textile machine and the yarn packages are received by respective receiving rods which are utilized for carrying the yarn packages to the subsequent process. An auxiliary device for regulating the lengthwise direction of the tube of each yarn package in a condition of alignment with the receiving rod is disposed between the conveyer belt and the position where the receiving rod is capable of receiving the yarn package.
Abstract: An open-end spinning machine has a succession of spinning units mounted on the frame thereof for pivotal movement between operative and inoperative positions, each spinning unit including a silver opening section, which contains therein a combing-out zone and a doffing zone. The silver opening section is associated with an impurity collecting chamber having an impurity inlet port arranged to be in communication with a fiber path between the combing-out zone and the doffing zone, and an impurity outlet port, through which the impurities are discharged from the collecting chamber. The outlet port has an open end opening into the atmosphere, and an impurity transfer pipe connected at one end to a source of vacuum is arranged so that the other end thereof faces the open end of the outlet port in spaced relation thereto.
Abstract: In a spinning device of an open end spinning machine, a silver is fed to and passes through a feeding and opening device which opens the silver into individual fibers and feeds them into a rotary spinning chamber where they are collected and discharged as a finished yarn therefrom. In order to clean the fibers, when they pass through the feeding and opening device, dirt of the fibers is adapted to be thrown out by centrifugal force and leaves the fibers through a dirt discharge opening and enters through an intermediate duct into a dirt collecting chamber. The chamber is provided with an air inlet opening into the atmosphere and an air outlet connected with a source of negative pressure to produce a current of air which flows through the air inlet and outlet and by which the dirt collected in the chamber is continuously removed out of the chamber. A part of the air current tends to be directed through the intermediate duct to the dirt discharge opening.
Abstract: Method and apparatus for controlling the operation of the open-end spinning frame which comprises measuring the number of rotations of the take-up roller means or a winding roller, controlling the relative timing of the reverse rotation of the take-up roller means and a winding roller of each spinning unit in association with the time of starting the normal driving of the fiber supply roller of each spinning unit and the time of starting the normal driving of the take-up roller and the winding roller based on the measured number of said rotations, and controlling the relative timing of the time of stopping the driving of the take-up roller and the winding roller in associated with the time of stopping the fiber supply roller based on the measured number of rotations.
Abstract: An improved method and apparatus for carrying out the doffing and donning operation of a spinning machine such as an open-end spinning machine. A suction nozzle is carried along the lengthwise direction of the spinning machine at a position before and above the take-up mechanisms of the spinning machine at the time of carrying out the doffing and donning operation. The suction nozzle is capable of holding a leading end portion of a yarn delivered from each spinning unit and this leading end portion of the yarn is caught by a fresh bobbin before the bobbin is mounted on a cradle of the take-up mechanism from outside the spinning machine and, then, the bobbin is mounted on the cradle and the take-up operation is commenced. The suction nozzle is capable of being stopped at any position along the passage thereof by manual operation.
Abstract: A device for forming a transfer tail wind around a bobbin held by a take-up mechanism of a ringless spinning machine such as an open-end spinning machine. The tail wind forming device comprises an auxiliary yarn guide disposed at a position along a yarn passage formed between the delivery roller means and a traverse motion mechanism of the take-up mechanism. The auxiliary yarn guide is provided with a groove for restricting the above-mentioned yarn passage to a position corresponding to an end portion of the bobbin, where the yarn is free from the traverse motion mechanism, when the transfer tail wind is being formed on the bobbin.
Abstract: A brake device is provided for stopping the rotation of a rotor shaft of an open-end spinning unit wherein a rotor shaft is turnably supported by a bearing assembly which is held by a bushing member by way of a resiliently yieldable member disposed between the bearing assembly and the bushing member, a brake shoe is resiliently held by a spring means disposed to a bracket of the brake device so that an excess force for urging the brake shoe toward the rotor shaft can be absorbed into the spring means.
Abstract: An improved method and apparatus for making yarn packages of cheese form by winding units of a textile machine, wherein a bobbin of a yarn package is rotatably supported by each cradle turnably supported by a pivot shaft secured to a bracket in such a condition that the contacting pressure between a yarn package and a friction roller for rotating the yarn package is gradually decreased in an exponential manner according to the increase in the size of the yarn package and the above-mentioned change of the contacting pressure is attained by utilizing means for compensating the contacting pressure which connects the cradle with the bracket.
Abstract: A textile machine made by assembling a plurality of unit textile machines. Each unit textile machine is provided with a plurality of unit machines, and each unit machine is provided with a yarn package forming mechanism. Each unit textile machine is provided with a unit conveyer belt disposed along a longitudinal direction of the unit textile machine at a position adjacent to the yarn package forming mechanisms. When the unit textile machines are assembled as one body, their unit conveyer belts are aligned and form a combined conveyer belt. At least one step is provided between any two adjacent unit conveyer belts or a unit conveyer belt of a unit textile machine and an auxiliary conveyer belt mounted on a head stock of the assembled textile machine. So as to always maintain the assembled conveyer belt in a clean condition, a cleaning device may be disposed at a position between two adjacent unit conveyer belts.
Abstract: In a spinning device of an open end spinning machine, a sliver is fed to and passes through a feeding and opening device which opens it into individual fibers and feeds them into a rotary spinning chamber where they are collected and discharged as a finished yarn therefrom. In order to clean the fibers, when they pass through the feeding and opening device, dirt of the fibers is adapted to be thrown out by centrifugal force and leaves the fibers through a dirt discharge opening into a dirt collecting chamber. At this time, loss of fibers has to be prevented and for such purpose an air supply duct is arranged adjacent to the dirt discharge opening to introduce an air current into the fibers opposite to the direction of movement of the dirt particles. The air supply duct is adapted to allow the speed, the flow rate, and/or the direction of the air current to change in accordance with the conditions mentioned in the following description.
Abstract: An improved device for supporting a spindle of an open-end spinning apparatus is provided with a ring shaped resiliently yieldable member rigidly disposed in a space between a bearing supporting the spindle and an inside cylindrical wall of a bushing member, and an additional ring shaped member rigidly disposed in the above-mentioned space separately from the resiliently yieldable member. To prevent accumulation of heat in the spindle, a plurality of grooves are formed on the peripheral surface of the bearing and/or inside surface of the resiliently yieldable member, and/or the additional member, respectively.
Abstract: A feed roller for feeding fibers to a combing roller in an open end spinning machine. The feed roller has a plurality of circumferential grooves in the peripherial surface thereof. The grooves can extend perpendicularly to the longitudinal axis of the feed roller, or can be slightly inclined relative to a plane perpendicular to the longitudinal axis of the feed roller.
Abstract: In a spinning apparatus comprising a spinning rotor and a centrally arranged thread drawoff tube for drawing off thread from the spinning chamber, an improved thread drawoff tube having a thread passage for delivering the thread from the tube is provided, the thread passage being provided with a combination of a curved ring shaped friction surface and a flat ring shaped friction surface formed outside of the curved ring shaped surface, the friction resistance of the thread passage decreasing toward the outer edge of the flat ring shaped surface.
Abstract: In a textile machine provided with displaceable means for carrying out an operation utilizing air pressure, a main duct is disposed along the length of the machine, and the main duct is provided with a longitudinal aperture covered with a flexible covering member which permits formation of a space by deforming the skirt portion of the covering member. A connecting pipe of the displaceable means is inserted into the main duct through the space and the connecting portion is sealed by a sealing member secured to the pipe during the displacement of the displaceable means.
Abstract: A method and apparatus of feeding a sliver into a combing section in an open end spinning machine including a feed roller and a combing roller which are arranged side by side on parallel axes within a main body. A pressed sliver is released from the peripherial surface of the feed roller and is guided by the nip surface of a presser which has a curved portion of a radius which is a little larger than that of the feed roller and a flat fiber guide surface extending from the nip surface toward the combing roller substantially linearily relative to the nip surface to guide the sliver fed out from the feed roller to the combing roller. Guide walls are provided extending along the fiber guide surface for limiting the spreading of the fiber bundle passing along the guide surface.
Abstract: An automatic method and apparatus is furnished for transporting yarn packages formed on the cylindrical tubes by a conveyer belt disposed adjacently along a textile machine or a group of textile machines and for transferring the yarn packages from the conveyer belt to receiving rods of a transporting means. In the apparatus, an auxiliary device for correctly transferring the yarn packages from the conveyer belt to the transporting means is satisfactorily utilized.
Abstract: Apparatus for handling yarn ends during a donning operation on a textile machine wherein in each operation unit, a yarn package is formed on a bobbin rotatably held by a cradle and rotated by the friction roller of a take-up mechanism. Just before or after doffing a full yarn package from the take-up mechanism, a yarn passage is formed by a yarn which is continuously supplied from the operation unit at a position in front of a part of the peripheral surface of the friction roller which the yarn passes over during the normal take-up operation. A fresh bobbin urges the yarn of the yarn passage toward the friction roller and then the fresh bobbin held by the cradle is rested on the friction roller. The yarn connected to the full yarn package is severed during the operation.
Abstract: An empty bobbin supply device for use in a doffing machine which travels in front of spinning units and is adapted for doffing a cheese and donning an empty bobbin in place thereof. This empty bobbin supply device has a reserve box, a reserve conveyor and a horizontal transfer conveyor, which are all positioned substantially in a vertical direction. An empty bobbin comes downwardly by gravity from the reserve box and is received between transfer plates of the reserve conveyor. The bobbin is then transferred downwardly by the circulating reserve conveyor, and in the absence of a bobbin on the horizontal transfer conveyor, the bobbin is delivered therefrom, while when a bobbin is present on the transfer conveyor, the bobbin remains on the reserve conveyor. The terminal of the horizontal transfer conveyor serves as a stand-by position for an empty bobbin in the doffing portion.
Abstract: The present invention relates to a method and apparatus for transferring yarn packages doffed from a textile machine provided with a conveyer belt disposed along the longitudinal direction thereof, to a container. The yarn packages are carried to one end of the conveyer and then dropped into the container positioned at a receiving position below and next to the end of the conveyer. The dropping distance from the end portion of the carrying surface of the conveyer to the surface for receiving yarn packages in the container is always maintained at a substantially predetermined distance which is larger than the width L of one package, but smaller than the width of two packages.