• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The yarn to be loosened is guided by slots (7;8); it is held on one side thereof and it is cut on the other side. Air is injected by a nozzle (13) for driving the cut end of the yarn into a channel (1), between the bottom (11) of this channel and the longitudinal edge of an adjacent flexible leaf (10) which is vibrated simulatneously at several hundreds of Hz. The air can escape sidewise through a longitudinal opening (4) of channel (1) and entrains the yarn from one side to the other side of the leaf (10) and imparts to this yarn alternatively inverted twists. A further action of the leaf (10) is to pulse the air in the channel and therefore to subject the yarn to intermittently applied pulls.
    公开号:SU1623565A3
    申请号:SU884355222
    申请日:1988-02-19
    公开日:1991-01-23
    发明作者:Коттенсо Реми；Цуерхер Эрвин
    申请人:Месдан С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    Fig: 1
    The invention relates to the textile industry and is intended to loosen and disentangle textile yarn by placing the free end of this yarn into an air stream and holding it against the stream to that stream.
    The purpose of the invention. Improving the efficiency of the method and reliability.
    Figure 1 shows a device for carrying out the method, a general view; 2 is a section A-A in FIG. one; FIGS. 3 to 7 are diagrams illustrating the various steps of the method, bottom views along the air flow.
    A method for disentangling and loosening textile yarn fibers is. that, to unwind the yarn, the free end is placed in the flowing air stream and held against the flow by maintaining the pulsed mode of the yarn by modulating a vibrating air stream with a frequency of several hectohertz, while the yarn is subjected to alternating twisting and unwinding effects synchronously with the change pulses tension pr - zhi for 0.1 - 0.3 s.
    The device (FIGS. 1 and 2) contains a duct with an open channel 1 with a rectangular cross section and two open ends 2 and 3. Having a longitudinal side hole 4, extending along its entire length, which corresponds to the lateral side of the rectangular section of channel 1 Both walls 5 and 6, which form the side surfaces of this channel, contain two slots 7 and 8, respectively, one opposite the other, for positioning the weakened yarn. One of the walls 6 or 5 is provided with a recess 9, which forms two surfaces under a right angle, one of which in this case is at an angle of 20 ° to the wall of the channel 1. This recess 9 provides for the positioning of the flexible plate 10, which passes through Channel 1. The material chosen to make this plate is a support made from a sheet of neoprene 70, which has good wear resistance.
    The bottom 11 of the channel 1 has a gap that extends over most of its length and the front end of which is approximately opposite to the place where the flexible plate 10 projects from the wall in which it is attached. This gap is about 2 mm deep and the distance between its bottom and the adjacent parallel edge of the plate 10 is 3 mm.
    An additional plate 12 (FIG. 2) is fixed on the wall 5 of channel 1 and extended from the free end i of the flexible plate 10 to end 3 downstream of channel 1. This plate is designed to reduce the cross section of the channel in order to compensate for the drop in air velocity and to increase as much as possible the force applied to the same. The nozzle 13 slightly penetrates into the end portion upstream of the channel 1 and is connected to a source of compressed air (not shown).
    The device works as follows.
    If we consider a large number of textile fibers that need to be loosened, and their various characteristics, as well as problems associated with the analysis of the process, taking into account the high used parts (1000 Hz for vibrating the flexible plate 10), the proposed method and device for its implementation are debugged experimentally.
    When the yarn is to be loosened and untangled, it is directed across the slits 7 and 8. The nozzle 13 is inserted into the end 2 upstream of the channel 1. The yarn is cut off at the desired length from one side of the channel with a knife (not shown), at the same time how it is held on the other side of the channel 1. Then the air is supplied under pressure to the nozzle 13, and the first impact of the injected air consists in introducing the yarn into the channel 1. Thanks to slots 7 and 8, the yarn itself is placed between the bottom 11 of the channel and the longitudinal edge flexible plate 10. Simultaneous In the meantime, this plate starts to vibrate very quickly with a frequency of approximately 1000 Hz. These plate pulsations between the two opposite walls 5 and 6 of channel 1 cause the yarn to move in the opposite direction to the plate moving. Due to the presence of a side opening 4 of channel 1, a part of the air can go sideways from this channel. For this reason, the yarn can be placed after turning around the flexible plate 10 (Figs. 4 and 6), below (Fig. 5) and above (Fig. 7) of this plate, respectively. The arrows FI and F show the respective movements of the plate 10 and yarn. During a full cycle (Fig. 3-7), the yarn undergoes two oppositely directed rotations with respect to its longitudinal axis. These rotations correspond to the twisting and spinning of the Vilokon, which makes the proposed method suitable for all those who see yarn.
    In addition to moving the yarn, moving the plate 10 affects the air flow. When plate 10 strikes from one wall 5 to another wall b of channel 1 and vice versa, it periodically opens the passage to the air coming out of the nozzle (FIG. 3) and periodically closes channel 1 and reflects this air to the side (figure 5). Once in the position shown in Fig. 5, the free end of the yarn is under the plate 10, the pressure exerted on it is first reduced and then increased (Fig. 7 and 3). Consequently, the yarn undergoes, synchronously, with successive twisting and unwinding, pushing pulses that alternate with attenuation. The impulse nature of the spin-spin movement and the push pulses increase the efficiency of the method. The presence of the longitudinal hole 4, which is extended sideways to the yarn, provides simultaneous movement of the yarn not only from one side to the other side of the channel, but also above and below the plate, and also creates a pushing effect on the yarn with modulation, the air (Fig. 5) is reflected laterally to the outside through the longitudinal opening 4 of the channel 1.
    Channel 1 must not be too short, otherwise the fibers that extend beyond its end downstream can mix up to form small nodules, and thus prevent the fibers from opening into tow, as required. Tests show that the length of this channel should be approximately 30-35 mm. The length of the flexible plate 10 is about 1/3 of the channel length. An important indicator is the distance between the longitudinal edge of the flexible plate 10, adjacent to the bottom 11 of the gap, and this bottom, which simultaneously forms the bottom of channel 1. In the described case, this distance is 3 them, while it is 0. 5 to 1 mm from the non-drilled portion of the bottom, wherein the width of the plate is 5 mm. The nozzle 13 has an internal diameter of 2 mm. Preferably, the nozzle is somewhat deformed to create an elongated hole 1 mm wide. This provides the best results when a large part of the oval hole is in the same direction as the height of the rectangular cross section of channel 1. It turns out that the laminar flow parameter of the air jet from this nozzle is improved .
    The period of time for air intake to loosen and disentangle varies with different types of fibers. For short yarn cotton, this time is about 0.15; 0.10 s, For wool type yarn, with long fibers, the time of admission depends on the nature of the yarn
    (classic open end) and its denier and ranges between 0.15 - 0.30 s.
    Cotton yarn with two folds gets weakened pretty quickly
    with an intake time of 0.15 s. A certain hazard exists in the formation of nodules in the wrong time. A double-fold yarn coat is more difficult to loosen and disentangle.
    If the duration of air injection is set correctly, the danger of nodule formation is very small. This duration ranges from 0.15 to 0.30 s. Instead of changing the time of air injection, it is also possible to change the speed of the air injected by the nozzle for the same period of time. This oscillation of the air flow also contributes to the adaptation of the method to various
    types of yarn. For example, in the case of cotton and yarn with two folds and a nozzle with a round suction with a diameter of 1.5 mm, the speeds can be 75 and 140 l / min, respectively. With regard to the size of the plate 12, pressed against the channel wall downstream of the flexible plate 10, its purpose is to determine the thickness of the nozzle 13, which should be such that with an oval nozzle 13 the ratio between the width of the nozzle’s cross section and approximately 13 : 2.
    Tests of flexible plates have been carried out. They show that the plate, made of neoprene 70, can withstand over
    400,000 operations using a nozzle with a diameter of 1.5 mm and an air flow of 105 l / min, with each operation lasting 0.18 s.
    40
    权利要求:
    Claims (5)
    [1]
    1. A method for disentangling and loosening textile yarn fibers, which consists in placing the free end of the yarn in a flowing air stream and holding it against the flow while maintaining the pulsed tension of the yarn by modulating a vibrating air flow
    with a frequency of several hectoherts, characterized in that, in order to increase the efficiency of the method, during the period of action of the vibrating air flow, the yarn is subjected to alternating twisting
    and unwinding effects synchronously with pulses of yarn tension change.
    [2]
    2. The method according to claim 1, characterized in that the yarn is subjected to alternating
    twisting and unwinding effects for 0.1 - 0.3 s.
    [3]
    3. A device for disentangling and loosening textile yarn fibers, comprising a duct made with an open through longitudinal channel of a rectangular cross section with slots at the inlet of the channel for guiding the yarn across the longitudinal axis of the channel, a nozzle for injecting air into the channel located on one From the ends of the channel, a flexible plate attached to the wall of the channel upstream of the flow of air exiting the nozzle, with the possibility of alternating contact with opposite walls of the channel, characterized in that. that, in order to increase operational reliability, in the side
    four
    5. 12 Q & YY
    0
    five
    the channel wall has a longitudinal hole, and the flexible plate is installed at an acute angle to the plane drawn through the longitudinal axis of the channel and the center of the longitudinal hole on the side wall and with a gap relative to the bottom of the channel opposite the side wall with the longitudinal hole.
    [4]
    4. A device according to Clause 3, characterized in that the channel in the section after the plate from the output end side is made smaller in width than from the nozzle placement side.
    [5]
    5. The device according to Clause 3, characterized in that the nozzle is made with an elongated cross section, the major axis of which is parallel to the main axis of the channel.
    11 1 13
    FIG. 6
    Fig 2 L 1 73,
    5EG
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1623565A3|1991-01-23|Method and apparatus for unraveling and breaking-up of textile yearn fibres
    US3525134A|1970-08-25|Yarn fluid treating apparatus
    RU2048622C1|1995-11-20|Device for twisting the combined threads
    GB1535036A|1978-12-06|Interlacing multifilament yarn
    US3339362A|1967-09-05|Method of joining strands
    KR960031665A|1996-09-17|Spinning method and device
    KR960001251A|1996-01-25|Needle mounting device for warp knitting machine
    US4610132A|1986-09-09|Compressed air thread splicing device
    US4549392A|1985-10-29|Yarn splicing device for spun yarns
    US4406115A|1983-09-27|Method of and means for unraveling a portion of textile yarn
    JPS6433234A|1989-02-03|Yarn opening method and apparatus
    US3930292A|1976-01-06|Devices for threading filaments on rollers
    US3875625A|1975-04-08|Apparatus for interlacing filaments of multifilament yarns
    JP2751947B2|1998-05-18|Device for entanglement of multifilament yarn
    US4125922A|1978-11-21|Jet tangler
    US4184316A|1980-01-22|Production of novelty yarns
    US5175983A|1993-01-05|Yarn splicing device for the knot-free piecing of yarns and process for the preparation of yarn ends
    US4392285A|1983-07-12|Device having yarn passage of specified dimensions for interlacing filaments of multifilament yarn
    DE60216070T2|2007-06-28|A yarn splicer
    JP2645473B2|1997-08-25|Yarn processing nozzle
    JP2002516928A|2002-06-11|Jet for single impact bulk processing
    DE2827322A1|1980-01-10|IC engine fuel vaporisation system - delivers fuel onto ultrasonic oscillation surface during intervals between excitation periods
    US3763643A|1973-10-09|Novel high-bulk yarn
    JPS59179829A|1984-10-12|Method for threading broken yarn end through pneumatic false twisting nozzle for bundled spinning
    IE46563B1|1983-07-27|Apparatus for and method of interlacing continuous filaments
    同族专利:
    公开号 | 公开日
    CH670661A5|1989-06-30|
    IT1218199B|1990-04-12|
    IT8819227D0|1988-01-27|
    US4890451A|1990-01-02|
    JPS6440629A|1989-02-10|
    JPH07113172B2|1995-12-06|
    US4829759A|1989-05-16|
    DE3804684A1|1988-09-01|
    US4888943A|1989-12-26|
    DE3804684C2|1992-04-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4229935A|1978-03-21|1980-10-28|Wain John K|Joining yarns|
    US4170103A|1978-03-29|1979-10-09|Wwg Industries, Inc.|Node fixation in self-twist yarn|
    CH623290A5|1978-06-12|1981-05-29|Fomento Inversiones Ind|
    JPS5647108B2|1979-01-23|1981-11-07|
    DE2954426C2|1979-01-23|1985-10-17|Murata Kikai K.K., Kyoto|Method of splicing spun threads|
    US4356688A|1979-11-23|1982-11-02|Battelle Memorial Institute|Method for joining two yarn pieces, and the device for carrying out the method|
    DE2954425C2|1979-12-19|1986-04-24|Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn|Device for generating an ignition unit|
    EP0053093B1|1980-11-24|1985-09-25|Schweiter Maschinenfabrik A.G.|Method of untwisting a length of a textile yarn, and device for applying this method|
    DE3201049C2|1982-01-15|1989-07-13|W. Schlafhorst & Co, 4050 Moenchengladbach, De|
    CH655492B|1982-07-01|1986-04-30|
    JPH0140130B2|1983-05-10|1989-08-25|Murata Machinery Ltd|
    IT1175131B|1983-10-04|1987-07-01|Savio Spa|IMPROVEMENTS TO THE WIRING JOINTS FOR THE MECHANICAL JOINTING OF TEXTILE THREADS AND MECHANICAL JOINTS ADOPTING SUCH IMPROVEMENTS|
    IT206161Z2|1985-09-11|1987-07-03|Mesdan Spa|MIXING HEAD FOR JOINING APPARATUS OF TEXTILE YARNS WITH THE USE OF COMPRESSED AIR.|IT1239336B|1990-02-23|1993-10-20|Savio Spa|DEVICE AND PROCEDURE FOR THE PREPARATION OF THE GARMENT OF THE THREAD FOR STARTING OR RETURNING THE OPEN-END SPINNING|
    IT1252634B|1991-12-05|1995-06-19|Mesdan Spa|METHOD FOR JOINTING WITHOUT KNOT OF THREADS OR TEXTILE YARNS BY COMPRESSED AIR AND DEVICE TO IMPLEMENT THE METHOD|
    DE4222662B4|1992-07-10|2005-12-08|Saurer Gmbh & Co. Kg|Device for preparing thread ends|
    IT1275947B1|1995-03-21|1997-10-24|Mesdan Spa|APPARATUS FOR THE PNEUMATIC JOINTING OF THREADS OR YARNS TO BE INSTALLED ON TEXTILE MACHINES, IN PARTICULAR ON WINDERS|
    IT1299006B1|1998-04-02|2000-02-07|Mesdan Spa|DEVICE FOR THE PREPARATION OF THE END OF THE WIRE AT THE JOINT WITH AN EQUIPMENT FOR THE PNEUMATIC JOINT WITHOUT WIRES AND|
    DE60216070T2|2002-07-24|2007-06-28|Murata Kikai K.K.|A yarn splicer|
    CN100410433C|2002-09-09|2008-08-13|村田机械株式会社|Joint unite and connecting method|
    ITMI20121019A1|2012-06-12|2013-12-13|Savio Macchine Tessili Spa|DEVICE FOR JUNCTION OF YARNS|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH653/87A|CH670661A5|1987-02-20|1987-02-20|
    [返回顶部]