WO2015151715A1 - 紡機におけるドラフト装置及びその制御方法 - Google Patents

紡機におけるドラフト装置及びその制御方法 Download PDF

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Publication number
WO2015151715A1
WO2015151715A1 PCT/JP2015/056554 JP2015056554W WO2015151715A1 WO 2015151715 A1 WO2015151715 A1 WO 2015151715A1 JP 2015056554 W JP2015056554 W JP 2015056554W WO 2015151715 A1 WO2015151715 A1 WO 2015151715A1
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WO
WIPO (PCT)
Prior art keywords
apron
fiber supply
speed
yarn
apron pair
Prior art date
Application number
PCT/JP2015/056554
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English (en)
French (fr)
Japanese (ja)
Inventor
大輔 槌田
直樹 小島
Original Assignee
株式会社 豊田自動織機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 豊田自動織機 filed Critical 株式会社 豊田自動織機
Priority to CN201580016832.5A priority Critical patent/CN106133220B/zh
Priority to EP15773751.1A priority patent/EP3128054B1/en
Priority to ES15773751T priority patent/ES2749872T3/es
Publication of WO2015151715A1 publication Critical patent/WO2015151715A1/ja

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns

Definitions

  • the present invention relates to a drafting apparatus in a spinning machine and a control method thereof, and more specifically, the fiber supply timing and the fiber supply amount of a plurality of fiber supply units are changed according to preset conditions, and different color and raw material portions are changed.
  • the present invention relates to a draft device in a spinning machine for spinning a continuous special yarn and a control method thereof.
  • FIG. 7 shows the relationship with the state of the special yarn to be manufactured.
  • the first apron starts driving and the second apron starts decelerating.
  • the speed of the first apron reaches the speed during steady spinning in a predetermined time from the start of driving, and the speed of the second apron becomes zero in the predetermined time from the start of deceleration, and the supply of the roving yarn is stopped.
  • the first apron starts to decelerate at the same time as the second apron starts to drive.
  • An object of the present invention is to provide a draft device in a spinning machine capable of spinning a special yarn in which different colors and raw material portions are continuous in a state in which the yarn strength at a raw material fiber supply start site is suppressed from being lowered, and its control. It is to provide a method.
  • a draft device in a spinning machine that solves the above problems includes a plurality of apron pairs respectively provided corresponding to a plurality of fiber supply units, a front roller common to the apron pairs, and the apron according to preset conditions.
  • a shift control unit configured to shift a pair of speeds, and the shift control unit starts the fiber supply when any of the plurality of fiber supply units starts the fiber supply.
  • a drive command is output to the apron pair corresponding to the unit, and the apron pair is driven at a speed lower than the speed at the time of steady spinning for a predetermined period, and then shifted to the speed at the time of steady spinning.
  • a control method of a draft device in a spinning machine that solves the above-described problem is based on a plurality of apron pairs provided corresponding to a plurality of fiber supply units, a front roller common to the apron pair, and preset conditions.
  • a draft control device in a spinning machine wherein any one of the plurality of fiber supply units supplies a fiber.
  • the apron pair corresponding to the fiber supply unit that starts fiber supply is driven at a speed lower than the speed during steady spinning for a predetermined period, and then the fiber supply unit starts fiber supply. Shifting the apron pair corresponding to the above to the speed at the time of steady spinning.
  • FIG. 1 Schematic of the draft device of a 1st embodiment.
  • omitted a part of draft device of FIG. (A) is explanatory drawing which shows the relationship between each speed change of the 1st apron pair and 2nd apron pair, and the obtained special yarn in 1st Embodiment, (b) shows the pattern of a special yarn.
  • FIG. The schematic diagram of the supply start part of a special thread.
  • explanatory drawing which shows the relationship between each speed change of the 1st apron pair and the 2nd apron pair, and the special yarn obtained.
  • the draft device 10 includes a bottom roller, a top roller, a weighting arm, and a cradle that are basically the same as a known three-wire draft device of a spinning machine, and has two types of configurations different from the known draft device.
  • a pron pairs corresponding to two types of rovings are provided.
  • the draft device 10 includes a front roller device 11, a first apron pair 12 provided behind the front roller device 11, and a second pair provided behind the front roller device 11.
  • An apron pair 13 is provided.
  • the first apron pair 12 supplies the first roving yarn S 1 to the front roller device 11, and the second apron pair 13 supplies the second roving yarn S 2 to the front roller device 11.
  • the first roving yarn S1 and the second roving yarn S2 are respectively supplied from a plurality of fiber supply units suspended from a creel (not shown), that is, a first roving winding and a second roving winding. That is, the draft device 10 includes a plurality of apron pairs 12 and 13 respectively provided corresponding to a plurality of fiber supply units, and a front roller device 11 common to the apron pairs 12 and 13.
  • the draft device 10 is an integral type of two spindles, and includes a weighting arm 14 and top rollers such as a front top roller 11b disposed on both sides of the weighting arm 14.
  • the front roller device 11 has a front bottom roller 11 a and both front top rollers 11 b, and the front top roller 11 b is supported by a weighting arm 14 via a support arm 15.
  • the pair of the first and second apron pairs 12 and 13 is disposed on both sides of the weighting arm 14.
  • the first apron pair 12 includes a middle bottom apron 16 and a middle top apron 17.
  • the middle bottom apron 16 is wound around a ten server 18, a middle bottom roller 19, and a tensioner 20.
  • the support arm 21 is fixed to the weighting arm 14, and the support shaft 22 is supported by the support arm 21.
  • the middle top apron 17 is wound between a middle top roller 23 rotatably supported on each of both ends of the support shaft 22 and an apron cradle 24 supported on the support shaft 22.
  • the apron cradle 24 includes a tensioner 25.
  • the second apron pair 13 includes a back bottom apron 26 and a back top apron 27.
  • the back bottom apron 26 is wound around the ten server 18, the back bottom roller 28, and the tensioner 20. That is, the back bottom apron 26 is wound around the back bottom roller 28 in a state where the ten server 18 and the tensioner 20 are shared with the middle bottom apron 16 and passes around the middle bottom roller 19.
  • the support arm 29 is fixed to the weighting arm 14, and the support shaft 30 is supported by the support arm 29.
  • the back top apron 27 is wound around a back top roller 31 rotatably supported on both ends of the support shaft 30 and a tensioner 25 provided on the apron cradle 24. That is, the back top apron 27 is wound around the back top roller 31 in a state where the tensioner 25 is shared with the middle top apron 17 and passes around the middle top roller 23.
  • a support bar 32 extends along the axis of the back bottom roller 28 behind the back bottom roller 28.
  • the support bar 32 supports the first trumpet 33 that guides the first roving yarn S1 and the second trumpet 34 that guides the second roving yarn S2 via the bracket 35.
  • the front roller motor 41 drives the front bottom roller 11a
  • the middle roller motor 42 drives the middle bottom roller 19
  • the back roller motor 43 drives the back bottom roller 28.
  • the middle roller motor 42 is a drive unit that drives the first apron pair 12
  • the back roller motor 43 is a drive unit that drives the second apron pair 13.
  • the front roller motor 41, the middle roller motor 42, and the back roller motor 43 are driven via mutually independent inverters 45, 46, and 47 controlled based on commands from the control device 44.
  • the processor that is, the control device 44 includes a microcomputer, operates based on predetermined program data stored in the memory, and controls the motors 41 to 43 via the inverters 45 to 47.
  • the control device 44 functions as a shift control unit configured to be able to shift the speeds of the apron pairs 12 and 13 in accordance with preset conditions.
  • the speed of each apron pair 12 and 13 means the revolving speed of the two aprons constituting each apron pair 12 and 13.
  • the control device 44 outputs a drive command to the apron pair 12 or 13 corresponding to one of the fiber supply units to start fiber supply, and the apron pair 12 or 13 is rotated at a speed during steady spinning for a predetermined period t.
  • the control device 44 After driving at a lower speed, the speed is changed to the speed for steady spinning. At the same time as the command, the control device 44 outputs a stop command to the apron pair 12 or 13 corresponding to the other fiber supply unit to stop the fiber supply, and the apron pair 12 or 13 is output for a predetermined period t. Stop after driving at a lower speed than during steady spinning. Note that “output a drive command (or stop command) to the apron pair 12 or 13” specifically outputs a drive command (or stop command) to the motor 42 or 43 that drives the apron pair 12 or 13. Means that.
  • the control device 44 can adjust the acceleration acceleration and deceleration acceleration of the middle roller motor 42 and the back roller motor 43 in a plurality of stages, for example, six stages.
  • the first roving S1 is supplied to the first apron pair 12 through the first trumpet 33 from the first roving wound from the creel (not shown), and the second roast is hung from the creel (not shown).
  • a second roving yarn S2 is supplied to the second apron pair 13 through the second trumpet 34 from the roving yarn winding.
  • the first roving yarn S1 and the second roving yarn S2 are the same except that they are different in color, are formed of the same raw material fibers, and have the same thickness.
  • the first roving S1 supplied to the first apron pair 12 is drafted between the front roller device 11 and the first apron pair 12 to form a fleece, and the fleece passes through a snell wire and a traveler (not shown) to bobbin.
  • the second roving S2 supplied to the second apron pair 13 is drafted between the front roller device 11 and the second apron pair 13 to form a fleece, and the fleece passes through a snell wire and a traveler (not shown) to bobbin.
  • the supply of the first roving yarn S1 and the supply of the second roving yarn S2 are switched at a preset time, and one of the first roving yarn S1 and the second roving yarn S2 except during switching. Only supplied.
  • the supply amount per unit time of the first roving yarn S1 is proportional to the speed of the first apron pair 12, and the supply amount of the second roving yarn S2 per unit time is the speed of the second apron pair 13. Is proportional to
  • the driving of the middle bottom roller 19 is stopped.
  • the driving of the middle bottom apron 16 is stopped.
  • the driving of the middle top apron 17 is also stopped and the driving of the first apron pair 12 is stopped.
  • the drive of the first apron pair 12 is stopped, the first roving S1 being spun is cut between the nip point of the first apron pair 12 and the nip point of the front roller device 11. .
  • the driving of the first apron pair 12 is started when the driving of the middle bottom roller 19 is started, so that the first roving S1 is smoothly fed to the front roller device 11. And the first apron pair 12.
  • the driving of the back bottom roller 28 is stopped.
  • the driving of the back bottom apron 26 is stopped.
  • the driving of the back top apron 27 is also stopped and the driving of the second apron pair 13 is stopped.
  • the driving of the second apron pair 13 is stopped, the second roving yarn S2 being spun is cut between the nip point of the second apron pair 13 and the nip point of the front roller device 11. .
  • the maximum speed of the first apron pair 12 and the maximum speed of the second apron pair 13 are the same.
  • the control device 44 drives the second apron pair 13 corresponding to the second roving yarn S2.
  • a command is output, and the second apron pair 13 is driven at a speed lower than the speed at the time of steady spinning for a predetermined time t from a time point that is a predetermined time period t before the preset switching time point Ts1, and then the steady spinning state. Shift to the outgoing speed.
  • control device 44 outputs a stop command to the first apron pair 12 corresponding to the first roving S1, and the first apron pair 12 is output during the normal spinning for a predetermined period t. Stop after driving at a lower speed.
  • the controller 44 changes the first apron pair 12 corresponding to the first roving yarn S1.
  • the first apron pair 12 is driven at a speed lower than the speed at the time of steady spinning for a predetermined time t from a time point that is a predetermined period t before the preset switching time Ts2. Then, shift to the speed at the time of steady spinning.
  • the control device 44 outputs a stop command to the second apron pair 13 corresponding to the second roving S2, and stops after driving for a predetermined period t at a speed lower than the speed during steady spinning.
  • the special yarn Y is spun from two colors of coarse yarn.
  • the pattern P is as shown in FIG.
  • the length L (spinning length L) of the special yarn Y spun between the switching time Ts1 and the switching time Ts2 is the second color (black) portion, and from the switching time Ts1.
  • the portion of the spinning length from the previous switching time Ts2 to the switching time Ts1 or from the switching time Ts2 to the next switching time Ts1 is the first color (white) part.
  • the black fibers are increased from the time point before the switching time Ts1 by a predetermined period t, and the white fibers are decreased by the amount of increase in the black fibers.
  • the white fibers are increased from the time point before the switching time Ts2 by a predetermined period t, and the black fibers are decreased by the amount of increase of the white fibers.
  • the supply of the second roving yarn S2 from the second roving bobbin is started simultaneously with the supply stop of the first roving yarn S1 from the first roving bobbin.
  • the supply of the second roving yarn S2 from the second roving winding is started at a time before the preset switching time Ts1.
  • the supply amount of the second roving yarn S2 is smaller than the supply amount at the time of steady spinning.
  • the second roving yarn S2 that has been newly supplied is mixed with the first roving yarn S1 little by little, two types of raw material fibers, that is, the first roving yarn S1 and the second roving yarn S2 are mixed. Are entangled satisfactorily with each other, and the decrease in yarn strength at the feed start portion of the raw material fibers, that is, the switching portion between the first roving yarn S1 and the second roving yarn S2 is suppressed.
  • the first supply of the first roving S1 is reduced for a predetermined time t in response to the start of the supply of the second roving S2.
  • the supply amount of the first roving S1 further decreases corresponding to the increase in the supply amount of the second roving yarn S2. For this reason, while the supplied roving yarn is switched, the sum of the supply amount of the first roving yarn S1 and the supply amount of the second roving yarn S2 is kept constant, and the thickness of the yarn fluctuates in the switching unit. It becomes difficult and the appearance of the obtained special yarn Y is improved.
  • the control device 44 outputs a drive command to the first apron pair 12 corresponding to the first roving yarn S1. Then, after driving the first apron pair 12 at a speed lower than the speed at the time of steady spinning from a preset time before the switching time Ts2, the speed is changed to the speed at the time of steady spinning. At the same time, the control device 44 outputs a stop command to the second apron pair 13 corresponding to the second roving S2, and drives the second apron pair 13 at a speed lower than the speed during steady spinning. Stop after. Therefore, even when the supplied roving yarn is switched from the second roving yarn S2 to the first roving yarn S1, a decrease in yarn strength at the switching portion is suppressed, and the appearance of the obtained special yarn Y is improved. Get better.
  • the special yarn Y switching unit obtained from the draft device 10 according to the present embodiment has almost no fuzz or fluff, unlike the special yarn obtained from the conventional draft device.
  • the length of the raw fiber mixing section (mixing section) before the switching time Ts1, Ts2 and the blending ratio of the first roving S1 and the second roving S2 are appropriate values depending on the type of spinning fiber and the spinning conditions. Is different.
  • the blending ratio of the first roving yarn S1 and the second roving yarn S2 correlates with the ratio between the speed of the first apron pair 12 and the speed of the second apron pair 13. Appropriate ranges are set in advance for the length of the mixing section and the blending ratio of the first roving yarn S1 and the second roving yarn S2.
  • the spinning machine Prior to the spinning operation, the spinning machine is operated in a state where the set values are input to the control device 44.
  • the controller 44 increases the speeds of the middle roller motor 42 and the back roller motor 43 in a state suitable for the set length of the mixing section and the blending ratio of the first roving yarn S1 and the second roving yarn S2.
  • the middle roller motor 42 and the back roller motor 43 are controlled so as to decelerate.
  • the draft device 10 includes a first apron pair 12 and a second apron pair 13 respectively provided corresponding to a plurality of fiber supply units (first roving winding and second roving winding), A front roller device 11 common to the first and second apron pairs 12 and 13 and a shift control unit (control device 44) that changes the speed of the apron pairs 12 and 13 according to preset conditions. .
  • the control device 44 When switching the fiber supply unit, that is, when any of the fiber supply units starts fiber supply, the control device 44 outputs a drive command to the corresponding apron pair, and sets the apron pair to a predetermined value. After driving at a speed lower than the speed during steady spinning for a period t, the speed is shifted to the speed during steady spinning.
  • the two types of raw material fibers are entangled well with each other, and a decrease in yarn strength at the switching portion (supply start site) is suppressed. Therefore, the special yarn Y in which different colors and raw material portions are continuous can be spun in a state in which a decrease in yarn strength at the raw fiber switching portion is suppressed.
  • the control device 44 drives the apron pair (the first apron pair 12 or the second apron pair 13) corresponding to the fiber supply unit that starts fiber supply.
  • a drive command is output to the apron pair corresponding to the fiber supply unit that stops the fiber supply (the fiber supply unit other than the fiber supply unit that starts the fiber supply), and the apron pair is determined in advance. Drive at a speed lower than the speed during steady spinning for a period t.
  • the fiber supply unit that stops the fiber supply decreases the supply amount of the fiber supply. It is about the same as the fiber supply amount newly supplied. Therefore, the thickness of the yarn is less likely to fluctuate at the switching unit (supply start site), and the appearance of the special yarn Y is improved.
  • the control device 44 is configured to be able to change the length and mixing ratio of the mixing section of a plurality of types of roving yarn (the roving yarn whose supply is stopped and the newly supplied roving yarn). Therefore, the supply fiber can be switched in an appropriate state corresponding to the fiber type and operating conditions.
  • the control device 44 when switching the fiber supply unit, the control device 44 outputs a drive command to the apron pair corresponding to the fiber supply unit that starts the fiber supply, and the apron pair is set in advance. After driving for a predetermined time t from a time point before the set switching time points Ts1 and Ts2, the driving is performed at a speed lower than the speed at the time of steady spinning, and then the speed is changed to the speed at the time of steady spinning. In addition, the control device 44 sets preset switching times Ts2 and Ts1 for the apron pair corresponding to the fiber supply unit that stops the fiber supply (a fiber supply unit other than the fiber supply unit that starts fiber supply). To output a stop command.
  • the switching time Ts1 the switching time Ts1.
  • the second roving yarn S2 is supplied from the second roving yarn while the same amount of the first roving yarn S1 is supplied from the first roving yarn winding as in the normal spinning. Is done. As a result, the thickness of the yarn becomes thicker at the portion corresponding to the switching portion.
  • the embodiment is not limited to the above, and may be embodied as follows, for example.
  • the speeds of the first apron pair 12 and the second apron pair 13 in the case of switching the fiber supply unit are not limited to changing in a single step, for example, changing in a multi-stepped shape.
  • the speeds of the first apron pair 12 and the second apron pair 13 may change in a curved line until the speed becomes the same.
  • the draft device 10 is not limited to a three-wire type and may be a four-wire type. That is, a second back roller is further provided behind the back roller around which the back bottom apron 26 is wound, and the first apron pair 12 and the second apron pair 13 are respectively connected to the second back roller. You may make it perform the draft of a roving.
  • the fiber supply section is not limited to two, but may be three or more.
  • three fiber supply units that supply three types of fibers having different colors or fiber raw materials may be configured to supply fibers in different periods in a predetermined order.
  • the rovings supplied from a plurality of fiber supply units are not limited to having the same thickness, and may have different thicknesses.
  • the cutting position of the roving yarn that is cut when the first apron pair 12 or the second apron pair 13 is stopped changes. Therefore, thickness unevenness is likely to occur in the switching portion, and the yarn strength is likely to decrease due to the presence of thin portions in the yarn. In that case, if the second embodiment is used, the yarn strength is hardly lowered.
  • the fiber supplied from the fiber supply unit is not limited to the roving yarn but may be a sliver.
  • the present invention is applied to supply new fibers to increase the mixing ratio of the fibers in the special yarn from 0, and the mixing ratio of the already supplied fibers in the special yarn is not necessarily set to 0. It does not have to be.
  • the present invention may be combined with the formation of slab yarn (yarn in which slabs having different thicknesses are formed in the length direction of the yarn).
  • rate of the apron pair corresponding to the fiber supply part which stops supply of a fiber was not changed from the time of steady spinning in the predetermined period t.
  • the speed of the apron 27 of the apron pair 13 corresponding to the fiber supply section that stops the fiber supply may be set to be higher than that during steady spinning in the predetermined period t so that the supply start site becomes thicker.
PCT/JP2015/056554 2014-04-03 2015-03-05 紡機におけるドラフト装置及びその制御方法 WO2015151715A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580016832.5A CN106133220B (zh) 2014-04-03 2015-03-05 纺纱机的牵伸装置及其控制方法
EP15773751.1A EP3128054B1 (en) 2014-04-03 2015-03-05 Draft device of spinning machine, and control method therefor
ES15773751T ES2749872T3 (es) 2014-04-03 2015-03-05 Dispositivo de extensión de máquina de hilado, y método de control para éste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014076820A JP5874775B2 (ja) 2014-04-03 2014-04-03 紡機におけるドラフト装置
JP2014-076820 2014-04-03

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Publication Number Publication Date
WO2015151715A1 true WO2015151715A1 (ja) 2015-10-08

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EP (1) EP3128054B1 (zh)
JP (1) JP5874775B2 (zh)
CN (1) CN106133220B (zh)
ES (1) ES2749872T3 (zh)
WO (1) WO2015151715A1 (zh)

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CN107299440A (zh) * 2015-12-28 2017-10-27 何烷钰 多云纹色彩混纺纱的生产装置
EP3374546A1 (en) * 2015-11-11 2018-09-19 Pinter Caipo, S.A.U. Device for joining fibres during the spinning process of fancy yarn and machine and method for spinning fancy yarn that includes said device
CN109338529A (zh) * 2018-07-14 2019-02-15 嘉兴学院 一种纺纱机罗拉牵伸装置中的双列皮圈机构

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CN107034557B (zh) * 2017-04-05 2020-04-03 李岚 一种细纱机的双列皮圈引纱装置及其环锭细纱机与纺纱方法
CN107012549B (zh) * 2017-05-31 2020-04-03 李岚 一种段彩纺牵伸机构及细纱机
JP2019148039A (ja) * 2018-02-28 2019-09-05 村田機械株式会社 ドラフト装置及び紡績ユニット
CN112725968B (zh) * 2020-12-28 2022-05-10 江苏恒力化纤股份有限公司 一种棉麻竹节花式纱的纺纱方法
CN112725967B (zh) * 2020-12-28 2022-03-18 江苏恒力化纤股份有限公司 一种棉麻竹节花式纱的纺纱方法

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Publication number Priority date Publication date Assignee Title
EP3374546A1 (en) * 2015-11-11 2018-09-19 Pinter Caipo, S.A.U. Device for joining fibres during the spinning process of fancy yarn and machine and method for spinning fancy yarn that includes said device
CN107299440A (zh) * 2015-12-28 2017-10-27 何烷钰 多云纹色彩混纺纱的生产装置
CN109338529A (zh) * 2018-07-14 2019-02-15 嘉兴学院 一种纺纱机罗拉牵伸装置中的双列皮圈机构

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CN106133220B (zh) 2018-01-26
EP3128054A1 (en) 2017-02-08
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ES2749872T3 (es) 2020-03-24
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