97results about "Piercing arrangements" patented technology

The invention relates to a full-automatic sliver jointing device and method. The joint device comprises a servo walking mechanism, a robot body, a visual system, a flexible grabbing mechanism and a high-precision joint mechanism. The servo walking mechanism is installed on the machine frame, the robot body is fixedly installed on the servo walking mechanism and moves along with the servo walking mechanism, and the visual system, the flexible grabbing mechanism and the high-precision joint mechanism are installed on the robot body. According to the full-automatic cotton sliver jointing device, unmanned operation of the whole process from broken end detection, positioning, grabbing to jointing is achieved, and the labor cost and the labor intensity are greatly reduced.

The utility model relates to a device for finding out a broken yarn joint of a ring bobbin, and the device comprises an air blowing device which is used for providing a positive pressure air source; the mounting plate is positioned on one side of the blowing device; the fixing device comprises a fixing pipe, a first driving assembly and a second driving assembly, the fixing pipe is used for fixing the ring bobbin, the first driving assembly is used for driving the fixing pipe to drive the ring bobbin to rotate, and the second driving assembly is used for driving the fixing pipe to drive the ring bobbin to linearly move, so that the ring bobbin is in a moving state of moving up and down while rotating; the static electricity removing device is used for removing static electricity of yarns on the ring bobbin; the air suction traction device is used for generating negative pressure, the air suction traction device and the air blowing device are arranged on the two sides of the fixing device correspondingly, and the air suction traction device and the air blowing device form directional airflow so that the broken yarn on the ring bobbin in the moving state can be separated from the ring bobbin. The structure is high in automation degree, broken yarn does not need to be manually found, the production efficiency is improved, the labor cost is reduced, and the yarn quality is guaranteed.

A splicing method of a splicing device on a ring spinning machine with a plurality of spinning stations, from which rovings are brought out from delivery rolls and are converted into yarn and are wound on a tube, in the event of a yarn break, the splicing device produces a splice in which a yarn end is connected to a roving coming out from a delivery roll and the spinning process is continued. Alternatively according to procedure a), a yarn end of the broken yarn is searched for, the found yarn end is detected and is used for splicing to obtain a tube without yarn interruption, or according to procedure b), an auxiliary yarn from a yarn supply is fastened to the tube, then the auxiliary yarn is separated to obtain a yarn end fastened to the tube, and the yarn end is used for splicing to obtain a tube with yarn interruption. Depending on the degree of utilization of the capacity of the splicing device and / or the possible prospect of success of procedure a), it is selected whether a yarn end is provided according to procedure a) or b), assuming that procedure a) takes more time than procedure b.

The invention provides a spinning machine. The spinning machine includes a spinning device, a yarn storage device, a winding device, a yarn joining device, a suction tube, a second catching device (24), and a moving portion (67). When the yarn (15) is broken, the suction tube captures the yarn (15) on the side of the spinning device and guides the yarn (15) on the side of the spinning device towards the yarn joining device. The second catching device (24) is disposed so as to face the yarn path, and catches the yarn (15) on the opposite package side when the yarn (15) is broken. The acting portion is disposed between the second catching device (24) and the yarn joining device on the yarn path, and separates the yarn (15) on the spinning device side and the yarn (15) on the package side when the yarn (15) is broken. The yarn joining device starts yarn joining while the action unit separates the yarn (15) on the spinning device side and the yarn (15) on the package side.

A method for producing a yarn having a pattern characterized by a plurality segments that are assembled into a sequence of rows, i.e. clusters. The yarn is preferably knotless. The method splices segments having a different length so that the pattern can be easily arranged with visibly distinct colours.

The invention relates to a textile machine that can have at least one first vacuum point for producing a thread. The textile machine can have at least one second vacuum point for drawing in the thread. The textile machine can have at least one first vacuum system. This can be designed and arranged to be fluidically connected to the first vacuum point. Alternatively, the first vacuum system can be designed and arranged to be in fluidic connection with the first vacuum point. The textile machine can have at least one second vacuum system. This can be designed and arranged to be fluidically connected to the second vacuum point. Alternatively, the second vacuum system can be designed and arranged to be in fluidic connection with the second vacuum point.In order to make the design of a textile machine more flexible, to further improve the vacuum allocation and to make the vacuum allocation more flexible, it is provided that a connection between the first vacuum system and the second vacuum system is designed in such a way that the connection can be selectively established or interrupted.

The present invention relates to an attending device for a ring spinning machine for producing yarn which comprises a supporting structure in which are arranged means (11) for mounting the attending device (1) on the machine displaceable along at least one row of workstations (2) and for moving it along the row of workstations (2) of the machine, service means (SM) for performing service operations at the workstations (2) of the machine and a power supply system and a control system (CS). At least one non-contact sensor (12) of the profile of the surface of the rotating element is mounted in the supporting structure, wherein the non-contact sensor (12) has a sensing area (SA) which is directed outside the ground plan of the attending device (1) and the non-contact sensor (12) is adapted to transmit the data about the sensed profile or is coupled to means for transmitting the data about the sensed profile or can be coupled to means for transmitting the data about the sensed profile.

A joining head (10) adapted for use in a device (100) for joining textile threads and yarns by means of a pressurized fluid, the joining head comprising: a body (11) in which a longitudinally extending splice chamber (12) is formed, the splice chamber (12) being open at opposite ends (12a, 12b) and provided with a longitudinal slot (13) at the top; at least one nozzle (15a, 15b) for introducing a pressurized fluid into the splicing chamber (12); at least one fluid outlet opening (18) formed in the body (11) and extending transversely to a longitudinal median plane (PL) of the joining chamber (12); at least one fluid outlet opening (18) which extends transversely to the longitudinal median plane (PL) of the splicing chamber (12), the outlet opening (18) being asymmetrical with respect to the longitudinal median plane (PL) and freely leading to the outside of the splicing chamber (12) at a single wall thereof, and at least one fluid outlet opening (18) which extends transversely to the longitudinal median plane (PL) of the splicing chamber (12). The pressurized fluid extraction opening (18) comprises a through opening formed in only one of the two walls (19, 20) laterally delimiting the splicing chamber (12), and the through opening has opposite ends respectively free to open into the interior and the exterior of the splicing chamber (12).

The invention relates to an automatic wiring unit (2) for a ring spinning machine (1) having an annular track (3), comprising a housing (6), a tower device (4), a control unit (2b) for a wiring assistance module, in which an encoder (8) is arranged in the housing (6) that can be moved on the tower device (4), and a measuring device (9) is mounted on the tower device (4), the method is used for determining the position of an annular track (3) of the ring spinning machine (1).

A yarn splicer device (4) comprising a pair of opposite plates (8,12) which are rotatable with respect to a common drive axis (X-X), the plates (8,12) being spaced apart from each other, along said drive axis (X-X), so as to identify a passage path (14) of a first yarn (16) ending with a first thread (20) and a second yarn (24) ending with a second thread (28), to be mutually spliced, tail tearing means (32), configured to grasp and tear tails (36) of said first and second thread (20,28), so as to obtain tearing points (40) positioned at least partially inside said passage path (14) of the first and second yarn (16,24), wherein said tail tearing means (32) comprise a first pair of counter-rotating rotatable cylinders (44), configured to clamp the tail (36) of said first thread (20) and / or a second pair of counter-rotating rotatable cylinders (48), configured to clamp the tail (36) of said second thread (28).

The invention provides a yarn hook yarn picking device of a ring spinning machine. The yarn hook yarn picking device is used for solving the problems that in the prior art, the structure is complex, a broken yarn end is difficult to find quickly, and an end-broken yarn is difficult to penetrate through a steel wire ring successfully. Comprising a base, a broken yarn end finding assembly, an ingot pulling and yarn combing assembly and a yarn picking module, and the broken yarn end finding assembly comprises an end finding module, a rotating module and a moving module; the yarn picking module comprises a yarn hook parallel to the central axis of the yarn suction pipe and a yarn picking power module for driving the yarn hook to rotate, the rear end of the yarn hook penetrates through and is rotationally arranged on the clamping block, the front end of the yarn hook is provided with a first bent shape, and the front end of the yarn suction pipe is provided with a second bent shape which forms a U-shaped structure with the first bent shape of the front end of the yarn hook; a yarn picking and threading part is formed between the first bent shape of the yarn hook and the second bent shape of the yarn suction pipe, and the yarn picking and threading part is matched with the rotating module and the moving module to be quickly and conveniently connected to a roller in a penetrating mode. The device is compact in structure, can adapt to rapid yarn combing and end finding of bobbins of different specifications, and can also improve the threading success rate.

To reduce the burden on users in setting up textile machinery. [Solution] The textile machinery system 100 comprises a first textile machine 1, a second textile machine 2, and a control device 3. The first textile machine 1 and the second textile machine 2 have winding devices that wind yarn to form packages. The control device 3 is capable of communicating with the first textile machine 1 and the second textile machine 2. The control device 3 includes a first input providing unit F11, a first calculation unit F12, a first output unit F13, a second input providing unit F21, a second calculation unit F22, and a second output unit F23. The input receiving unit receives input of yarn-related information. The calculation unit calculates setting information for yarn splicing and / or yarn generation in the first textile machine 1 and the second textile machine 2, corresponding to the input yarn-related information, based on the input yarn-related information. The output unit outputs the setting information.

The invention belongs to the technical field of spinning, and particularly relates to a conveying mechanism for a loom and a conveying process. The conveying mechanism for the loom comprises a compensation device, and a wire rod penetrates through the compensation device and then is wound on a wind-up roller; the compensation device comprises: a fixed box, which is internally provided with an axially through wire channel; the two compensation assemblies are arranged on the upper surface and the lower surface of the fixing box in a lifting mode respectively and abut against the wire rod; the twisting assembly is arranged in the fixed box in a lifting manner and is linked with the compensation assembly; when a wire rod penetrates through the fixing box, the two compensation assemblies are pressed on the upper surface and the lower surface of the wire rod respectively. After the wire is cut off, the broken end of the wire is pulled back by the compensation assembly and contracted into the fixing box, so that the broken end of the wire is attached to the side wall of the twisting assembly; one compensation assembly moves upwards to drive the twisting assembly to rotate in the winding direction of the wire rod, so that the broken end of the wire rod is twisted, and the broken end of the wire rod is prevented from loosening through the twisting assembly.

A steel ring threading and splicing device for ring spinning head, belong to ring spinning yarn automatic joint technical field, the present application in order to solve the existing technology in the steel ring threading process steel ring positioning unreliable and other problems. Including steel ring positioning device, steel ring positioning device includes crank, connecting rod, sliding block, air pipe and vacuum suction tube, guide is set on the shell before and after, sliding block and the guide sliding fit, drive rudder and the shell are connected, the one end of crank is connected with the output shaft of drive rudder, the other end of crank is sequentially articulated with sliding block through connecting rod, vacuum suction tube and air pipe are fixed on the left side of sliding block, the front part of air pipe is bent to right upper side, the front part of vacuum suction tube is bent downward, the front end suction hole of vacuum suction tube is located in the right upper side of the front end air hole of air pipe, steel ring positioning device is positioned to steel ring by the combination of suction and blowing, can make steel ring stop in the specified threading area.

The utility model relates to the technical field of pultrusion material production of glass fiber and carbon fiber etc. especially relates to a pneumatic yarn joining device, including pneumatic drive arrangement, still include: axial closed -loop chamber device, including main frame, limit block, the sliding block is arranged between main frame and limit block and slides, the air hole is set up along its axial in main frame, main frame sets up U type groove, the slide hole is set up in limit block, the connecting rod is arranged in the slide hole and slides, the spring is set up in connecting rod sleeve, the slide hole is located and sets up the limit ring, manual back -and -forth device is used for pulling the sliding block to move, the utility model has the following beneficial effect: high degree of automation: can automatically complete the joint of yarn, improves production efficiency, the reliability is strong: adopts pneumatic drive, and the action is stable and reliable, is applicable to the particularity of glass fiber and carbon fiber, simple operation: single hand can pull the trigger of the pull rod and buckle pressure air gun, therefore convenient for the operation of manual control device, simple and easy to use.

The present invention relates to a spinning machine which flexibly performs the capturing of the yarn on the side of the package. The spinning machine is provided with a suction device (29) and a suction nozzle (109). Depending on the main cause of the interruption of the spinning by the spinning device (23), the state at the start of the spinning by the spinning device (23), or the yarn type of the spun yarn (33), the use of which of the suction device (29) and the suction nozzle (109) is changed.

A connection fitting (1), and a dispensing system and a connection device comprising said connection fitting are provided. The connection fitting is adapted to connect a source of compressed air (S) to an air distributor assembly (200) of a device (100) for pneumatically connecting yarns or threads, and comprises a single inlet tube (2) provided at one end with a single inlet interface (20) configured to connect to the source of compressed air, branching at opposite ends into a pair of distribution tubes (3, 4) independent of each other, each distribution tube terminates in a respective outlet opening (30, 40), the outlet openings of the pair of distribution tubes being formed in a common attachment flange (5) configured to be coupled to an air distributor assembly (200) and at least partially overlapping a respective inlet opening (201, 202) of the air distributor assembly. The installation and management cost of the pneumatic connecting device is reduced, the use flexibility is improved, the structure and the construction are simple, and the cost effectiveness is high.

The invention provides a broken yarn combing and end finding device and method for a ring spinning machine. The problems that in the prior art, steps are tedious, and broken yarn ends are difficult to find rapidly are solved. Comprising a base and a spindle pulling and yarn combing assembly, and the spindle pulling and yarn combing assembly comprises a tube pulling installation frame vertically and fixedly connected to the upper portion of the base, a tube grabbing module, a yarn combing module and a position adjusting and controlling module arranged on the tube pulling installation frame and used for adjusting the position of the tube grabbing module. The bobbin grabbing module is used for taking down a broken bobbin from a spindle and rotating the broken bobbin in the direction opposite to the normal winding direction of yarn. The yarn combing module is used for moving in the tangential direction of the broken bobbin during reverse rotation of the broken bobbin to provide tangential force for broken yarn on the broken bobbin so as to loosen or unwind the broken yarn wound on the broken bobbin. The device is compact in structure, easy to operate and capable of adapting to rapid yarn combing and end finding of bobbins of different specifications.

The invention discloses a yarn lifting structure of a rotor spinning machine, which comprises a lifting cylinder, a lifting rod and two support connectors, a yarn lifting rod rotating arm is rotatably arranged on each support connector, the yarn lifting rod rotating arm comprises an insertion hole positioned at the top end, a rotating shaft is mounted on the side surface of the yarn lifting rod rotating arm, the lifting cylinder is hinged to one support connector, and the lifting cylinder is hinged to the other support connector. The end of a piston rod of the lifting air cylinder is hinged to the rotating shaft, and the two ends of the lifting rod are inserted into inserting holes of the two yarn lifting rod rotating arms to be fixed. The single yarn can be lifted during yarn connection.

The invention relates to an automatic splicing unit (1) for a ring spinning machine (2), comprising a suction hood (4) provided with a substantially circumferential opening for encircling a bobbin (3) of the ring spinning machine (2), and which can be moved in the horizontal and vertical directions by means of a drive device arranged in the automatic splicing unit (1), the ring spinning machine (2) comprises a movable suction hood (4) provided with a substantially straight central portion (4c) and at least two substantially curved portions (4a, 4b), and during the joining operation, the suction hood (4) is moved downward close to the bobbin (3) in order to pick up the end of the broken yarn from the bobbin (3) by raising / tilting a guide wire (6) of the ring spinning machine (2).

An automatic piecing unit for a textile ring spinning machine comprises a bottom circumferential jet arrangement having three nozzles. The bottom circumferential jet arrangement is disposed concentrically around a spindle of the textile ring spinning machine proximate a cop. Each nozzle project air towards cop at an upwards angle. The automatic piecing unit also comprises an additional jet arrangement disposed above the bottom circumferential jet arrangement and having blow nozzles. Two blow nozzles blow air at an acute angle towards an upward direction of the cop and another blow nozzle points towards traveler region of the ring. Each of the bottom circumferential jet arrangement and the additional jet arrangement discharge air to detach a broken yarn end from the cop and lift the broken yarn end upstream towards a drafting zone of the ring spinning machine to enable effective automatic yarn piecing with a drafted fibre material.

This invention relates to the field of mechanical intelligent control technology, and in particular to a method and system for posture control of a spinning breakage splicing robot on a ring spinning machine. The method includes the following steps: positioning based on the displacement sensor of the actuator, so that the front and rear shaping servo motors reach the front and rear target positions according to set values; constructing a data acquisition array, and acquiring the posture monitoring parameters of the front and rear shaping servo motors based on the data acquisition array; processing the posture monitoring parameters to obtain the posture monitoring optimization parameters of the front and rear shaping servo motors; acquiring the horizontal center distance of the yarn tube, so that the left and right shaping servo motors reach the left and right target positions; after reaching the front and rear target positions and the left and right target positions, obtaining the servo origin offset to control the robot's posture. This invention, through multi-dimensional collaborative optimization, ensures splice accuracy and stability, reduces manual intervention, and improves the robot's intelligence level.

The invention relates to the technical field of spinning machines, in particular to a spinning machine full-automatic piecing device which comprises a spinning machine body, and a broken yarn sensor, a yarn guide roller and an electronic yarn clearer are sequentially arranged in the spinning machine body in the airflow movement direction. The clamping device is arranged at the top of the spinning machine body, and a driving mechanism for driving cone yarn to rotate is arranged in the spinning machine body. The airflow shell is fixed to the spinning machine body, the airflow shell comprises a first cavity and a second cavity which are different in air inlet pressure and air outlet pressure, and a yarn outlet hole is formed in the end, away from the clamping device, of the airflow shell in a penetrating mode; the negative-pressure pipeline is arranged in the spinning machine body, one end of the negative-pressure pipeline is communicated with the second cavity, the other end of the negative-pressure pipeline is connected with a negative-pressure device, and a cutting device is arranged between the second cavity and the negative-pressure pipeline; one end of the yarn tail transfer device is arranged in the yarn outlet hole, and the other end of the yarn tail transfer device extends out of the airflow shell; and the spinning apparatus corresponds to one end, far away from the clamping device, of the yarn tail transferring device and is used for receiving the yarn passing through the yarn tail transferring device and finishing jointing.

The invention discloses a maintenance device for a textile spinning machine, which comprises a supporting structure and a front side (12), and the front side is suitable for being arranged against a row of work stations of the textile spinning machine. The invention relates to a maintenance device (1) comprising a support structure (13) in which at least one generator (13) for a flat air flow (1310) is arranged, the generator having at least one outlet (131) for the flat air flow (1310) and the at least one outlet (131) being oriented to generate the flat air flow (1310) along a front side (12) of the maintenance device (1), where the generator (13) for the flat air flow (1310) is coupled to a control and power supply system (CS) of the maintenance device (1). In addition, the invention discloses a ring spinning machine or an air-jet spinning machine comprising the maintenance device and a method for protecting the inner space of the maintenance device from the deposition of impurities.

The utility model provides a sewing thread two-for-one twister wiring device, which relates to the technical field of two-for-one twister wiring and comprises a device body, vertical plates are mounted on the surface of the top of the device body, a limiting rod is arranged between the two vertical plates, a supporting rod is slidably sleeved on the surface of the outer side of the limiting rod, and a limiting hole is formed in the end face of the supporting rod. Through cooperative use of a vertical plate, a limiting rod, a supporting rod, a guide rail and a pulley, the wiring machine body can be conveniently adjusted, later-stage wire leading is facilitated, a worker only needs to manually push a mounting frame during adjustment, then a mounting rod moves on the surface of the limiting rod through a limiting hole, and therefore movement of the wiring machine body is completed; the wiring machine main body is convenient for wiring, the pulleys are arranged, so that the movement of the supporting rods can be accelerated, the friction force of the supporting rods is reduced, the pressure of the mounting frame is shared for the supporting rods, and the guide rails are arranged, so that the movement of the pulleys is conveniently limited, and the stability of the wiring machine main body during movement is improved.

The application provides a cotton sliver break point butt joint device and butt joint method of a cotton sliver drawing frame, which comprises a frame of the drawing frame, a plurality of cotton sliver conveying rollers are rotationally connected to both sides of the frame, a cotton conveying channel is fixedly installed at the bottom of the frame and corresponds to the positions of the cotton sliver conveying rollers, movable pull blocks are installed in the upper and lower ends of the cotton conveying channel, cotton guide holes are arranged on the pull blocks and are used for allowing the cotton slivers to pass through, the positions of the cotton guide holes in the upper and lower ends are staggered, mounting covers are fixedly installed on both sides of the middle part of the cotton conveying channel, the cover openings of the mounting covers are communicated with the cotton conveying channel, movable clamping blocks are installed in the mounting covers, rubbing plates are installed on the opposite surfaces of the clamping blocks and are movable in the front-back direction, and clamping assemblies are installed in the pull blocks and are used for clamping the cotton slivers in the cotton guide holes. The device can quickly and automatically complete the butt joint process of the break point after detecting the break.

The application provides a ring plate follow-up control method and system for double-arm joint robot operation, which comprises the following steps: firstly, collecting original laser displacement data of the ring plate; performing multiple dynamic anomaly detection on the data, including statistical layer, structure layer and trend layer, to generate a comprehensive anomaly score, then fusing and reconstructing the anomaly data points and performing interpolation repair to obtain repaired displacement data; performing robust state estimation based on the repaired data and the anomaly score to obtain the real-time motion state of the ring plate, and then predicting the height of the ring plate at a specified time in the future through dynamic fusion of a physical motion model and a data-driven prediction model; finally, adaptively adjusting the control gain according to the height prediction result and the current height, combining the reliability index, calculating the robot follow-up control amount and driving the double-arm robot to perform follow-up, which can effectively identify and repair measurement anomalies, avoid false control jitter, and improve the success rate of yarn loop threading and the robustness and real-time performance of robot operation.

The invention provides a device for enabling yarn to penetrate through a steel wire ring. The device is used for solving the problems that in the prior art, the structure is complex, the integration degree and the automation degree of all parts are low, and operation steps are tedious. Comprising a frame body, a head finding and yarn sucking module, a head finding moving module used for controlling the head finding and yarn sucking module to move up and down and back and forth, a yarn pulling module and a steel wire ring locating module used for locating a steel wire ring at the right front end of a steel collar seat. The end finding and yarn sucking module comprises a yarn sucking pipe, a negative pressure generating module, an L-shaped mounting seat, an inclined power part for driving the negative pressure generating module to rotate and incline, and a rotating power module for driving the L-shaped mounting seat to rotate, the vertical part of the L-shaped mounting seat is fixedly connected with the inclined power part, and the negative pressure generating module is used for forming negative pressure to suck broken yarns by the yarn sucking pipe; the yarn pulling module is used for providing pulling force when the yarn suction pipe of the end finding yarn suction module is connected with the broken yarn on the yarn breaking pipe in a penetrating mode. The device is compact in structure, easy to operate and high in integration and automation degree of all parts.

The utility model relates to the technical field of textile machinery, in particular to an air supplement door device. A splicing trolley is used for splicing yarns, yarn passing channels of a large suction nozzle and a small suction nozzle of the splicing trolley can cause some yarns to be hung in the yarn passing channels due to related problems of part processing quality, matching and the like, if manual processing is not carried out, the yarn passing channels can be blocked by the yarns, and the production efficiency is greatly reduced. A negative pressure opening is formed in a wall plate, an air supplement door is arranged on the outer side of the negative pressure opening, the air supplement door is rotationally arranged relative to the wall plate, and a power mechanism is arranged on the air supplement door and used for opening or closing the air supplement door. The wallboard is provided with a suction nozzle negative pressure channel at the other end of the air supplement door, the suction nozzle negative pressure channel is connected with large and small suction nozzles, and a sealing gasket is arranged between the suction nozzle negative pressure channel and the wallboard for sealing. The device is simple and reasonable in structure, the probability that yarns are hung on the negative pressure channel is greatly reduced, the frequency of manual intervention is reduced, normal operation of the splicing trolley is guaranteed, and the production efficiency is improved.

Semi-automatic doffing spinning machine and semi-automatic doffing method, the semi-automatic doffing spinning machine comprises a spinning unit, producing a yarn, the yarn is wound on a tube to form a bobbin, the tube is pivotally supported by a bobbin holding arm, the bobbin holding arm is mounted with a pair of tailstocks, the tube is pivotally supported between the tailstocks, at least one of the tailstocks of the bobbin holding arm is an active tailstock so as to be controllable when opening and / or closing, at least one of the tailstocks of the bobbin holding arm is a thread hooking tailstock, the thread hooking tailstock is equipped with at least one mechanical device configured to intercept the yarn. The spinning machine is equipped with at least one splicing car with a movable nozzle, the nozzle is configured to suck the yarn produced by the spinning unit and bring it to an intermediate transfer position. The splicing car has a movable yarn holding unit configured to recover the yarn at the intermediate transfer position with the movable nozzle, tension the yarn and position it in the vicinity of at least one thread hooking tailstock so as to allow at least one thread hooking tailstock to fix the yarn to the tube.