EP1329542B1 - Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms - Google Patents

Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms Download PDF

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Publication number
EP1329542B1
EP1329542B1 EP02025458A EP02025458A EP1329542B1 EP 1329542 B1 EP1329542 B1 EP 1329542B1 EP 02025458 A EP02025458 A EP 02025458A EP 02025458 A EP02025458 A EP 02025458A EP 1329542 B1 EP1329542 B1 EP 1329542B1
Authority
EP
European Patent Office
Prior art keywords
yarn
sliver
spinning
spindle
yam
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP02025458A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1329542A3 (de
EP1329542A2 (de
Inventor
Helmut Feuerlohn
Thomas Weide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Saurer GmbH and Co KG
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 Saurer GmbH and Co KG filed Critical Saurer GmbH and Co KG
Publication of EP1329542A2 publication Critical patent/EP1329542A2/de
Publication of EP1329542A3 publication Critical patent/EP1329542A3/de
Application granted granted Critical
Publication of EP1329542B1 publication Critical patent/EP1329542B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex

Definitions

  • the invention relates to a spinning device for producing a spun yarn by means of a circulating air stream according to the preamble of claim 1.
  • a device for producing a spun yarn by means of a circulating air flow is known.
  • the fiber sliver to be spun is drawn into a nozzle block and passes through a sliver guide.
  • the sliver guide has spaced-apart fiber guide elements that allow the free passage of a core fiber bundle.
  • the sliver is exposed to a circulating around the sliver air flow.
  • the free fiber ends of the sliver are wound around the conical spindle head by the circulating air flow at the input opening of the spindle.
  • these fiber ends loop spirally around the sliver as so-called binding fibers, and from the sliver a yarn is produced, which is discharged through the hollow spindle.
  • DE 40 36 119 C2 also shows a device for producing a spun yarn by means of a circulating air flow, in the use of which free fiber ends of the sliver are wound around a conical spindle head by the circulating air flow at the input opening of the spindle.
  • the sliver guide is in this spinning device within the current fiber strand so that the fibers of the sliver are arranged on the peripheral surface of the sliver guide.
  • Modern spinning machines are constantly increasing demands in terms of productivity and yarn properties.
  • Such spinning devices as are known from the generic DE 199 26 492 A1 or in another embodiment from DE 40 36 119 C2, are suitable for achieving high production speeds with good yarn properties. It is all the more troublesome when spinning operations at high take-off speeds, such as those used in normal spinning operation, frequently force repetitions of the piecing process because piecing at this high yarn speed is relatively uncontrolled and with greatly reduced piecing security.
  • the spinning device has a control device and an adjusting device for adjusting at least the longitudinal component of the air flow depending on the withdrawal speed of the thread, with the help of which the angular position of the wound around the spindle head fiber ends and thus the angular position of the Umwindefasern is controlled and wherein the adjusting a setting for the piecing and alternatively at least one setting for the normal spinning operation is controlled.
  • the injector action of air nozzles or negative pressure in the housing can contribute to the formation of the airflow. At least a portion of the air flow in the direction of yarn travel can through together with the sliver by the inlet opening of the housing entering air are formed.
  • the adjusting device comprises a positionable cover of the inlet opening.
  • the position of the cover determines the cross section of the inlet opening.
  • the larger the cross-section of the inlet opening the greater the amount of air entering the housing together with the sliver and thus the proportion of the longitudinal component in the circulating air flow in the region of the spindle head. If the cross-section is reduced again, the air volume decreases accordingly.
  • the longitudinal component of the air flow is. advantageously set by controlling the cross section of at least one air inlet opening of this air flow. A control of the air drawn through the inlet opening offers the advantage that no additional amount of air is required to be blown into the housing.
  • An alternative embodiment for adjusting the longitudinal component of the air flow is formed according to claim 4 by a directed in the direction of yarn passage bypass to the inlet port of the fiber channel in the housing, whose cross section is adjustable by means of the adjustment. Due to the common advantage of the embodiments according to claim 2 and claim 4, to provide no additional amount of air, can be avoided in spinning machines with a variety of jobs significant costs.
  • the housing has at least one inlet channel directed in the direction of yarn travel, which is connected to the compressed air source.
  • the adjusting device is for adjusting the Air pressure of the supplied air set.
  • the adjustment of the longitudinal component of the air flow is carried out in a particularly simple and fast manner by regulating the pressure of the supplied air from the compressed air source. In particular, no mechanical devices are required whose function is impaired or hindered by dust or fiber fly.
  • the longitudinal component of the air flow is advantageously adjusted so that the angle at which the Umwindemaschinen have placed around the withdrawn thread, in the range of 20 ° to 25 °, preferably at 27 °.
  • the control device comprises a data storage for yarn data and is connected to a line through which yarn data can be fed.
  • the adjusting device is controllable depending on the yarn data.
  • the equipment with a single drive makes it possible to make any piecing of the spinning station regardless of other spinning stations of the spinning machine in the inventive way without delay. This reduces downtimes.
  • the spinning station 1 shown in partial view in Figure 1 has a housing 2 in which an air nozzle body 3 is supported.
  • a sliver 6 supplied by the drafting rollers 4, 5 enters the inlet opening 7 of the housing 2, passes through the sliver channel 8 and the fiber guiding elements 9 and is fed to the inlet opening 10 of a hollow spindle.
  • the air nozzles 12 blow air in the region of the input opening 10 of the spindle 11, whereby an air stream circulating the sliver 6 and the spindle head 13 is formed, which acts on the sliver 6 with a swirl effect.
  • Free fiber ends 14 of the sliver 6 are wound around the sliver 6 and the spindle head 13.
  • an air flow 30 is generated in the sliver channel 8 and in the air gap 15 between the wall of the sliver channel and the sliver 6.
  • the air flow 30 moves in the longitudinal direction of the sliver 6 on the spindle head 13 and forms a longitudinal component of the spindle 11 circulating air flow.
  • the thread 16 formed from the sliver 6 is withdrawn through the spindle 11.
  • the wrapped around the spindle head 13 free fiber ends 14 are taken and wound around the thread 16.
  • the inlet opening 7 is associated with a cover 18 which is positionable with the adjusting device 17.
  • the adjusting device 17 engages over the rack 19 to the cover 18.
  • the gear housing 20 acts not shown gear with the rack 19 together.
  • the gear is driven via the operative connection 21 by the servomotor 22.
  • the servomotor 22 is controlled by the control device 23.
  • the control device 23 controls the motor 25 via the line 24 and the motor 27 via the line 26. Via the line 28, the control device 23 is connected to simplification reasons, not shown further elements of the spinning station and the spinning machine.
  • the motor 25 drives the drafting rollers 4, 5 and the motor 27 drives the take-off rollers 29, 29A.
  • FIG. 1 shows the adjusting device 17 at the spinning station 1 during the piecing phase with the cover 18 in the raised position. This can be fed through the inlet port 7 and the sliver channel 8, a maximum amount of air that passes the sliver channel 8 as air flow 30 and, as shown in Figure 3, acts as a longitudinal component of the circulating air flow 31.
  • the circulating air flow 31 wraps the free fiber ends 14 around the spindle head 13.
  • FIG. 2 shows the spinning station 1 during normal spinning operation.
  • normal spinning operation is the Yarn or take-off speed compared to the piecing phase considerably higher.
  • the cover 18 is in a lowered position.
  • the air gap 15 has become smaller and the amount of air that is drawn through the inlet port 7 and the sliver channel 8, reduced compared to the setting shown in Figure 1.
  • FIG. 3 shows the principle of the formation of the air flow in the region of the spindle head 13.
  • the direction of the circulating air flow 31 determines the position of the wrapped around the spindle head 13 free fiber ends 14.
  • the direction of the strength of the air streams 30, 31, 32, 33, 34 indicated in the figure 3 by the length of the air flow 30, 31, 32, 33, 34 respectively representing arrow.
  • the air flow 33 as formed by the cover 18 in the lowered position corresponding to the representation of Figure 2 during normal spinning operation forms alternatively together with the air flow 32, which consists of the blown through the air nozzle 12, the air circulating around the spindle head 13 Airflow 34.
  • the airflow 34 has a different direction than the airflow 31. This particular direction determines the location of the free fiber ends 14 during normal spinning operation.
  • the air flow 34 forms with a Parallel to the central axis. 35 of the thread an acute angle ⁇ , which is greater than the angle ⁇ , which is formed by the air flow 31 with the parallels of the central axis 35. Accordingly, the position of the free fiber ends 14 wrapped around the spindle head 13 during the piecing phase is different than during the normal spinning operation.
  • FIGS. 4 and 5 The changes in the position of the free fiber ends 14 on the spindle head 13 of the spindle 11 are shown in FIGS. 4 and 5 in a perspective view.
  • the direction or position of the .. free fiber ends 14 during the piecing phase in the presence of the air flow 30 and from FIG. 5 during the normal spinning operation in the presence of the air flow 33 can be seen from FIG. 4. If the free fiber ends 14 encircling the spindle head 13 are shown longer when they are in reality, this serves to better clarify the different situation.
  • the thread 36 shown in Figure 6 produced at 100 m / min take-off speed and large opening during the piecing phase, with the cover 18 occupying the raised position shown in Figure 1, shows wraps which are predominately at an angle ⁇ of approximately 22 ° with a parallel to the central axis of the thread 36 form.
  • the strength of the filament 36 was measured at 15.5 cN / tex.
  • the angle ⁇ is indicated by a horizontal line 70 and an obliquely extending line 71 representing the position of the binding fibers.
  • the strength of the filament 37 was measured at 13.4 cN / tex.
  • the formed cross section for the air drawn into the housing 2 is designated with the position of the cover 18 raised and, as a small opening, the formed cross section when the cover 18 is in the lowered position.
  • FIG. 8 shows a thread 38, which was produced at a constant opening, instead of at 100 m / min with a take-off speed of 300 m / min.
  • the Umwindefasern form an angle ⁇ of about 12 °.
  • the strength of the thread 38 was measured at 9.9 cN / tex.
  • FIG. 9 shows a thread 39, which was produced at an unchanged small opening instead of at 300 m / min with a take-off speed of 100 m / min.
  • the Umwindemaschinen form an angle ⁇ of about 52 °.
  • the strength of the thread 39 was measured at 10.7 cN / tex.
  • This particular reduction in yarn strength compared to yarn produced according to the invention characterizes the result of the yarn production according to the known prior art, for example, if the take-off speed for the piecing was lowered to 100 m / min compared to the take-off speed of 300 m / min in normal spinning operation.
  • the piecing should be able to run controlled, so as to increase the piecing security.
  • the reduced strength values of a thread produced in this way do not meet the requirements and lead to the above-mentioned defects or disadvantages.
  • FIG 10 shows an alternative embodiment of the invention.
  • the sliver 40 passes through the drafting rollers 41, 42 and enters through the sliver channel 43 in the housing 44 a.
  • the sliver 40 is subjected to the action of a fiber guide element 45 and a circulating air flow.
  • the circulating air flow is generated by blowing air through the air nozzles 46, 47.
  • the circulating air stream wraps the free fiber ends 48 around the spindle head 49 of the hollow spindle 50.
  • the thread 51 is passed through. the hollow spindle 50 deducted.
  • the free fiber ends 48 are placed around the thread 51 as Umwindemaschinen.
  • the housing 44 has a passage 52 formed as a bypass to the sliver passage 43.
  • the bypass 52 is closable with a cover 53.
  • the cover 53 is pivotable by means of the adjusting device 54.
  • the pivoting movement is generated by means of the lifting cylinder 55, which is pneumatically actuated via the lines 56, 57.
  • a switching device 58 acts on alternatively lines 56 and 57 with compressed air, which is supplied from the compressed air source 59.
  • the switching device 58 is actuated by the control device 60, with which it is connected via the line 61.
  • the bypass 52 is opened so that both through the sliver channel 43 and through the Bypass 52 air is drawn, which enters as a longitudinal component in the circulating air flow.
  • This setting corresponds to a "large opening" of the sliver channel 8 of the setting of the device shown in Figure 1, as used in the piecing phase.
  • FIG. 11 shows a further alternative embodiment of the invention.
  • the sliver 40 passes through the drafting rollers 41, 42 and enters through the sliver channel 62 in the housing 63, is subjected to the action of a circulating air flow and withdrawn through the spindle 50.
  • the circulating air stream wraps the free fiber ends 48 around the spindle head 49.
  • the housing 63 has an injection channel 64 extending parallel to the sliver channel 62. Compressed air is injected through the injection channel 64.
  • the injection channel 64 is connected to the compressed air source 59 via the line 65.
  • the control of the air pressure takes place with the adjusting device 66.
  • the adjusting device 66 is controlled via the line 67 by the control device 68.
  • the Compressed air is blown in the piecing phase, wherein the air pressure is adjusted so that the Umwindefasern lie at a desired angle ⁇ to the thread 51 and the desired yarn strength is reached.
  • the setting corresponds to a "large opening" of the sliver channel 8 in the setting of the device shown in Figure 1, as used in the piecing phase.
  • the compressed air supply is shut off, the setting of the "small opening" of the sliver channel in the setting of the device shown in Figure 2, as used in normal spinning operation.
  • the "large opening” is set, for example, at a take-off speed of 100 m / min. After piecing, the drawing speed of the thread 16, 51 is brought to, for example, 300 m / min for normal spinning operation and the "small opening" is set. For the piecing phase as well as for the normal spinning operation, one setting of the adjusting device 17, 54, 66 is sufficient in each case.
  • the longitudinal component of the air stream after piecing when starting the withdrawal speed of the yarn 16, 51 in intermediate stages or continuously be adjusted so that each desired high yarn strength is maintained during startup. Accordingly, for example, a continuous or alternatively a stepwise adjustment of the positionable cover 18 during startup can take place.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP02025458A 2002-01-17 2002-11-15 Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms Expired - Lifetime EP1329542B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10201577A DE10201577A1 (de) 2002-01-17 2002-01-17 Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms
DE10201577 2002-01-17

Publications (3)

Publication Number Publication Date
EP1329542A2 EP1329542A2 (de) 2003-07-23
EP1329542A3 EP1329542A3 (de) 2003-11-19
EP1329542B1 true EP1329542B1 (de) 2006-08-23

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EP02025458A Expired - Lifetime EP1329542B1 (de) 2002-01-17 2002-11-15 Spinnvorrichtung zur Herstellung eines gesponnenen Fadens mittels eines umlaufenden Luftstroms

Country Status (6)

Country Link
US (1) US6792744B2 (zh)
EP (1) EP1329542B1 (zh)
JP (1) JP4154248B2 (zh)
CN (1) CN100347359C (zh)
CZ (1) CZ304693B6 (zh)
DE (2) DE10201577A1 (zh)

Cited By (1)

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WO2013138875A1 (en) * 2012-03-19 2013-09-26 "D-A-Dinko Bahov" Et Method and device for spinning of yarn with air vortex

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JP2008533318A (ja) * 2005-03-16 2008-08-21 マシーネンファブリク リーター アクチェンゲゼルシャフト 紡糸プロセスがセンサで監視されるエア紡績機
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CN102953169A (zh) * 2012-10-22 2013-03-06 经纬纺织机械股份有限公司 一种非接触式假捻器的环锭细纱机
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DE102015108706A1 (de) * 2015-06-02 2016-12-08 Maschinenfabrik Rieter Ag Spinnstelle einer Luftspinnmaschine sowie Verfahren zum Betrieb derselben
CH712663A1 (de) * 2016-07-14 2018-01-15 Rieter Ag Maschf Verfahren zum Verarbeiten eines strangförmigen Faserverbands sowie Vorspinnmaschine.
CN113089139B (zh) * 2021-04-07 2022-06-07 江西莱富纺织有限公司 一种流速可调的气流纺织装置
CN114108155B (zh) * 2021-10-28 2023-01-06 嘉兴市恒诺纺织有限公司 一种再生涤纶包覆纱制备装置
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Publication number Priority date Publication date Assignee Title
WO2013138875A1 (en) * 2012-03-19 2013-09-26 "D-A-Dinko Bahov" Et Method and device for spinning of yarn with air vortex

Also Published As

Publication number Publication date
US6792744B2 (en) 2004-09-21
DE10201577A1 (de) 2003-07-31
EP1329542A3 (de) 2003-11-19
JP2003221738A (ja) 2003-08-08
CZ304693B6 (cs) 2014-09-03
US20030131579A1 (en) 2003-07-17
EP1329542A2 (de) 2003-07-23
DE50207925D1 (de) 2006-10-05
CZ2003129A3 (cs) 2003-09-17
CN1432671A (zh) 2003-07-30
CN100347359C (zh) 2007-11-07
JP4154248B2 (ja) 2008-09-24

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