US3777338A - Electronic-pneumatic yarn plug control system for yarn texturing device - Google Patents

Electronic-pneumatic yarn plug control system for yarn texturing device Download PDF

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Publication number
US3777338A
US3777338A US00289926A US3777338DA US3777338A US 3777338 A US3777338 A US 3777338A US 00289926 A US00289926 A US 00289926A US 3777338D A US3777338D A US 3777338DA US 3777338 A US3777338 A US 3777338A
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Prior art keywords
yarn
port
stuffer tube
plug
fluid
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Expired - Lifetime
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US00289926A
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English (en)
Inventor
D Vermeer
Washington J Macknight
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Allied Corp
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Allied Chemical Corp
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    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/125—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including means for monitoring or controlling yarn processing

Definitions

  • This invention relates to yarn texturing devices, more specifically, a yarn plug control system for yarn texturing devices.
  • Texturing yarn by directing heated yarn in a current of heated fluid such as steam against a yarn plug in a stuffer tube and discharging the yarn is known in the art.
  • a current of heated fluid such as steam
  • sensing of the yarn plug in the stuffer box is also well known, either to control wind-up speed or to control feed roll speed.
  • U. S. Pat. No. 3,200,466 to Duga et al. U. S. Pat. No. 3,280,444 and U. S. Pat. No. 3,388,440, both to Stanley.
  • none of these prior art patents teach the control of the heated fluid (such as steam) by means of sensing back pressure of a fluid jet issuing from one or more ports near the discharge end of a stuffer tube to control yarn plug location.
  • the process of this invention is the improvement of plug control when texturing yarn by directing heated yarn in a current of heated fluid against a yarn plug in a stuffer tube and discharging the yarn.
  • the improve ment comprises controlling the location of the end of the yarn plug at the discharge end of the stuffer tube by sensing the plug end location with at least one jet of fluid issuing from at least one port near the discharge end of the stuffer tube.
  • Each port communicates with a pressure sensor controller which actuates a control valve which in turn controls the flow of the heated fluid such as steam.
  • the jets of fluid are preferably air.
  • the heated fluid is preferably steam.
  • the apparatus of this invention controls the location of a plug of textured yarn near the discharge of a stuffer tube, yarn being textured as described above.
  • the apparatus comprises (a) a stuffer tube having (b) at least one port, issuing a jet of fluid, preferably air. Each port communicates with (c) a pressure sensor controller, so that when the yarn plug is located to be impinged by the jet of fluid issuing from the port, the resulting back pressure can be sensed by the pressure sensor controller. Also, there is (d) means to transmit the output from the pressure sensor controller to actuate a (e) flow control means (such as a valve) in (f) the heated fluid supply means such as a steam line.
  • pressure sensor controller is meant any kind of electrical, electronic, pneumatic, fluid or other type of pressure sensitive control device such as, preferably, a fluidic amplifier with fixed gain, adjustable bias and rate controlled output relay,
  • the yam plug end is located near the port or ports in the stuffer tube by controlling the flow of heated fluid (steam) supply means responsive to the back pressure of the fluid jet issuing from the port.
  • the pressure sensor controller is a fluidic amplifier with fixed gain, adjustable bias and rate controlled output relay, commercially available from General Electric Corporation.
  • Two ports in the side of the stuffer tube near the discharge end communicate through a manifold having multiple orifices, preferably five, to the inside of the stuffer tube.
  • the ports are arranged with one near the discharge end of the stuffer tube and one only slightly farther away from the discharge end.
  • the port nearest the discharge end is connected to the controller.
  • the other port is connected to a source of constant pressure air (0.01 to 1 psi).
  • the variance in the back pressure is senses through the near port and communicated through the connecting air conduit to the controller, which in turn regulates the steam control valve on the steam line to the stuffer tube.
  • variance in the yarn plug location near the ports is sensed and controlled by continuous proportional changes in the valve in the steam line.
  • a pressure sensor switch connected to the port nearest the discharge end is set so that the back pressure should indicate no yarn plug in front of the port. Back pressure occurs when the yarn plug appears before the port, the pressure sensor switch then actuates the control valve to control the steam flow to cause the plug to retract.
  • the pressure sensor switch connected to the port furthest from the discharge end of the stuffer tube is'set to be actuated only when the yarn plug is absent from in front of the port. This pressure sensor switch would also actuate the steam control valve in the steam line to correct the steam flow and bring the plug back in front of the port if the plug should get too short.
  • a one port embodiment of this invention another control set up is used. Only one port is present in the stuffer tube. This port communicates to a pneumatic gauging device such as the G. E. Qualiguard control unit.
  • the gauging device is set to send signals when the back pressure occurs above or below certain pre-set limits.
  • signals sent from the control pneumatic gauging device can drive a servo motor to open or close the steam valve in the control line in either direction to control the location of the yarn plug in the stuffer tube.
  • This single port can also be external to the stuffer tube to sense the yarn plug as it exits beyond the discharge end of the'stuffer tube.
  • the single port can also be recessed in the stuffer tube and elongated, or recessed in the stuffer tube and communicating with the stuffer tube through a manifold having a series of hole orifices opening into the stuffer tube.
  • the process is preferably run at constant yarn removal rates from the plug. These apparati and method give good plug control and offer no impediments to catch yarn filaments.
  • FIG. 1 is a schematic showing the two port embodiment of the pneumatic-electronic plug location control device of this invention.
  • FIG. 2 is a schematic showing a one port embodiment of the plug location control device of this invention with the port external to the end of the stuffer tube.
  • FIG. 3 is a schematic showing another one port embodiment.
  • FIG. 4 is a side view in cross section of a single port embodiment where the port is recessed in the stuffer tube and communicates to the stuffer tube through a manifold having a series of orifices opening into the stuffer tube.
  • FIG. 5 is a cross sectional side view of the single port embodiment where the port is elongated longitudinally.
  • FIG. 6 is also a cross sectional bottom view of this same embodiment.
  • FIG. 7 is also a cross sectional bottom view of this same elongated port.
  • FIG. 8 is a schematic showing the preferred proportional pressure sensor controller plug control device of this invention used in the preferred two port embodiment.
  • FIG. 9 is a side view in cross section of the preferred recessed ports with manifold and orifices used in conjunction with the controller system in FIG. 8.
  • FIG. 10 is a cross sectional bottom view of the ports, manifold and orifices of FIG. 9.
  • yarn plug 1 in stuffer tube 2 is formed by impinging yarn on the plug 1 from steam line 3. Details, not important to this invention, can be seen in the Longbottom U. S. Pat. No. 3,409,356. Steam flow is controlled by control valve 4.
  • the end of yarn plug 1 is located between ports 5 and 6 which have jets of fluid such as air issuing from them supplied by air lines 9 and 10.
  • Air lines 9 and 10 communicate with pressure sensor switches 7 and 8. Air is supplied to pressure sensor switches through air line 12 and to lines 9 and 10 through air line 11. Air supply 19 supplies air for line 13 and line 12 to the pressure sensor switches through pressure regulator 16. Air is supplied to air line 11 through regulator 17 from air supply line 13.
  • Air pressure is indicated on pressure gauges 14 and 15.
  • the electronic output of pressure sensor switches 7 and 8 is transmitted through electric lines 28 to control box 24.
  • Control box 24 is supplied electricity through 110 volt AC supply lines 26.
  • Switch box 25 can be used to switch to manual control or set for automatic control and is connected to control box 24 with electric lines 27.
  • Control box 24 is connected to servo drive 20 through pressure switches 21 and 22 with electric lines 29.
  • Servo drive 20 drives valve stem 18 to control steam pressure.
  • Pressure switches 21 and 22 are connected by steam lines 23 to steam line 3 to override signal from control box 24 if pressure in steam line 3 exceeds pre-set limits, i.e., becomes too high or too low.
  • yarn plug 1 in stuffer tube 2 is formed by impinging yarn on plug 1 from steam line 3 as shown in detail in the Longbottom patent, U. S. 3,409,356.
  • Location of yarn plug 1 is sensed by fluidic proximity sensor 41 having port 47. Air is supplied through line 50 to proximity sensor 41 and back pressure is sensed through line 49 by pressure switch 44. Air is supplied through line 51 to air solenoid valve 46 through air line 52 and through pressure regulator 53 and pressure control 43 to the pressure switch 44 and through line 50 to the proximity sensor 41.
  • Pressure sensor switch 44 output signal is transmitted through electric line 54 to delay timer 45 which in turn emits a control signal through electric line 55 to air solenoid valve 46 which controls control air pressure through line 42 to steam control valve 4 thereby controlling opening and closing of control valve 4 to control steam flow which in turn controls plug location of yarn plug 1.
  • the delay timer 45 is necessary to prevent rapid fluctuation in signals from sensor 41 causing fluttering valve action at control valve 4.
  • yarn plug 1 in stuffer tube 2 is formed by impinging yarn on plug 1 from steam line 3. Details of the texturing, not important to this invention, can be seen in the Longbottom U. S. Pat. No. 3,409,356. Steam flow is controlled by control valve 4. Yarn plug 1 is located in the area in front of port 35 which has a jet of fluid such as air issuing from it supplied by air line 36. Air line 36 has a reservoir 33 connected by line 34 to damp out surges. Back pressure through line 36 from port 35 due to changes in position of yarn plug 1 is sensed in pneumatic gauging device 31 (G. E. Qualiguard Control Unit). The device functions as a pressure sensor switch.
  • Pneumatic gauging device 31 is set to transmit separate signals when back pressure exceeds upper and lower limits too high or too low. These signals are transmitted through electric line 39 to servo motor 20 which drives valve stem 18 to open and close control valve 4 to control steam flow and in turn adjust position of steam plug 1. Pneumatic gauging device 31 also communicates through electric line 38 to solenoid 30 to operate on-off steam valve 40 to shut down or start up the unit. Also pressure switch 32 connected to steam line 3 through line 37(A) and to pneumatic gauging device 31 through line 37 can override signals from the pneumatic gauging device in case the steam pressure in line 3 exceeds pre-set limits.
  • FIG. 4 is a cross sectional side view of another embodiment of the one port embodiment of this invention.
  • Stuffer tube 2 has recessed port 60 which communicates to stuffer tube 2 through manifold 62 and orifices 63, 64 and 65.
  • FIG. 6 is a cross sectional plan view having the same numbers corresponding to the same elements.
  • FIGS. 5 and 7 are cross sectional side and plan views of recessed port 60 communicating through elongated port 61 to stuffer tube 2.
  • the yarn plug not shown, but as seen in FIGS. l-3, in stuffer tube 2 is formed by impinging yarn on the plug from steam line 3. Details can be found in U. S. Pat. No. 3,409,356. Steam flow is controlled by control valve 4. The end of the yarn plug is located, by controlling steam flow by means of this invention, between ports 72 and 74. Manifold 73 opens on one side with ports 72 and 74 and on the yarn plug side communicates with said stuffer tube through orifices 91 to 95 shown in detail FIGS. 9 and 10. Ports 72 and 74 are connected to air conduits 71 and 75 respectively.
  • Conduit 71 for port 72 communicates with proportional pressure sensor controller 70 so that controller 70 senses variance in back pressure in manifold 73.
  • Air under constant low pressure under 1 pound per square inch gauge, is supplied to manifold 73 through port 74 from line 75.
  • Air for the entire pneumatic control system is supplied through conduit 76.
  • Pressure regulator valve 81 controls pressure at about 18 psig in line 76.
  • Pressure gauge indicates pressure downstream of valve 81 in line 76.
  • Filter 89 filters out any dirt in supply air pressure to valve 81.
  • Shut off valve 87 can be used to stop air flow to the entire system.
  • Pressure regulator valve 82 maintains a pressure of under 1 psig in conduit 75.
  • Conduit 77 supplies high pressure air, 18
  • Conduit 78 and pressure regulator valve 83 supply an adjustable bias signal of 3 to 8 psig air to controller 70.
  • controller 70 senses variation in pressure in manifold 73 through conduit 71 it controls the opening or position of steam control valve 4 by sending proportional signals through line 79 and three way valve 80 to the diaphragm of the pneumatically controlled steam control valve 4.
  • Three way valve 80 is necessary to keep steam control valve 4 open when the plug is absent in stuffer tube 2 to keep stuffer tube 2 hot and avoid delay to reheat after process down-time. This is accomplished by connecting three way valve 80, which is a solenoid, electrically by lines 85 to a motor on a driven roll, not shown, in the process.
  • valve 80 When the motor is not energized, three way valve 80 is switched to conduit 86 and away from controller output conduit 72. Pressure regulator valve 84 maintains constant pressure downstream in line 86 set to provide appropriate pressure on diaphram of steam control valve 4 to keep it open enough to keep stuffer tube 2 hot. To shut down the steam line shut off valve 88 is used.
  • the various plug-ins P are means supplied to permit plugging in of a pressure gauge assembly to measure pressure in lines 71, 75, 78 and 79.
  • Example Conditions of Example 1 of U. S. Pat. No. 3,409,356 to Longbottom were followed with an improved steam jet and stuffer tube having the two port embodiment of this invention to control yarn plug location.
  • the yarn plug was successfully controlled between ports.
  • the ports were 0.32 inch apart longitudinally.
  • the nearest port to the stuffer tube discharge end was three-eighths inch from end to center of port.
  • the ports were supplied air at a gauge pressure of inches of water.
  • Apparatus for controlling the location of a plug of textured yarn near the discharge end of a stuffer tube, said yarn being textured by directing heated yarn in a current of heated fluid against said yarn plug in said stuffer tube and discharging said yarn comprising a stuffer tube having at least one port, said port issuing a jet of fluid, said port communicating with a pressure sensor controller, so that when the yarn plug is located to be impinged by said jet of fluid issuing from said port, the resulting back pressure can be sensed,
  • ports are recessed in said stuffer tube and communicate with said stuffer tube through a manifold having a series of orifices opening into said stuffer tube.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US00289926A 1972-09-18 1972-09-18 Electronic-pneumatic yarn plug control system for yarn texturing device Expired - Lifetime US3777338A (en)

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US28992672A 1972-09-18 1972-09-18

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US (1) US3777338A (nl)
AT (1) AT345428B (nl)
BE (1) BE804919A (nl)
CA (1) CA980558A (nl)
CH (3) CH576018A5 (nl)
DE (1) DE2346529C2 (nl)
FR (1) FR2200387B1 (nl)
IT (1) IT995392B (nl)
LU (1) LU68429A1 (nl)
NL (1) NL7312789A (nl)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911539A (en) * 1972-12-29 1975-10-14 Phillips Petroleum Co Method for crimping synthetic thermoplastic fibers
US3936917A (en) * 1975-05-19 1976-02-10 Allied Chemical Corporation Automatic gate loading control for stuffer box texturing machine
US3961402A (en) * 1972-05-17 1976-06-08 John Heathcoat & Company Ltd. Process for the production of bulked and crimped yarn
US3961401A (en) * 1972-05-17 1976-06-08 John Heathcoat & Co. Ltd. Apparatus for the production of bulked and crimped yarn
US4040155A (en) * 1972-12-29 1977-08-09 Phillips Petroleum Company Apparatus for crimping synthetic thermoplastic fibers
US4162564A (en) * 1977-06-27 1979-07-31 Stanley Robert K Method and apparatus for stuffer crimping strand material
US4258457A (en) * 1972-12-29 1981-03-31 Phillips Petroleum Company Method for coating and crimping synthetic thermoplastic
US4399597A (en) * 1980-11-19 1983-08-23 Akzona, Incorporated Method and apparatus for production of textured yarn
US20140317895A1 (en) * 2012-01-07 2014-10-30 Oerlikon Textile Gmbh & Co. Kg Method and Device for Crimping a Multifilament Thread
CN108914307A (zh) * 2018-07-16 2018-11-30 叶剑 一种加弹设备中的网络机构
CN111020767A (zh) * 2019-12-20 2020-04-17 苏州新育达精密机械有限公司 一种联苯热箱结构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166821A (en) * 1962-11-26 1965-01-26 Monsanto Co Crimping apparatus
US3256582A (en) * 1964-03-04 1966-06-21 Burlington Industries Inc Apparatus and method for bulking yarn
US3343240A (en) * 1963-12-27 1967-09-26 Snia Viscosa Method and apparatus for bulking synthetic fibers
US3353242A (en) * 1965-10-18 1967-11-21 Bancroft & Sons Co J Feed control for stuffer crimper
US3388440A (en) * 1963-07-10 1968-06-18 Techniservice Corp Strand windup treatment apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200466A (en) * 1963-07-01 1965-08-17 Bancroft & Sons Co J Apparatus for crimping filaments
US3280444A (en) * 1963-07-10 1966-10-25 Robert K Stanley Strand windup treatment
US3409956A (en) * 1966-07-05 1968-11-12 Allied Chem Apparatus and process for texturizing yarn
DE2111163B2 (de) * 1971-03-09 1978-09-21 Neumuenstersche Maschinen- Und Apparatebau Gmbh, 2350 Neumuenster Verfahren zum Kräuseln von Faden

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166821A (en) * 1962-11-26 1965-01-26 Monsanto Co Crimping apparatus
US3388440A (en) * 1963-07-10 1968-06-18 Techniservice Corp Strand windup treatment apparatus
US3343240A (en) * 1963-12-27 1967-09-26 Snia Viscosa Method and apparatus for bulking synthetic fibers
US3256582A (en) * 1964-03-04 1966-06-21 Burlington Industries Inc Apparatus and method for bulking yarn
US3353242A (en) * 1965-10-18 1967-11-21 Bancroft & Sons Co J Feed control for stuffer crimper

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961402A (en) * 1972-05-17 1976-06-08 John Heathcoat & Company Ltd. Process for the production of bulked and crimped yarn
US3961401A (en) * 1972-05-17 1976-06-08 John Heathcoat & Co. Ltd. Apparatus for the production of bulked and crimped yarn
US4258457A (en) * 1972-12-29 1981-03-31 Phillips Petroleum Company Method for coating and crimping synthetic thermoplastic
US4040155A (en) * 1972-12-29 1977-08-09 Phillips Petroleum Company Apparatus for crimping synthetic thermoplastic fibers
US3911539A (en) * 1972-12-29 1975-10-14 Phillips Petroleum Co Method for crimping synthetic thermoplastic fibers
US3936917A (en) * 1975-05-19 1976-02-10 Allied Chemical Corporation Automatic gate loading control for stuffer box texturing machine
US4162564A (en) * 1977-06-27 1979-07-31 Stanley Robert K Method and apparatus for stuffer crimping strand material
US4399597A (en) * 1980-11-19 1983-08-23 Akzona, Incorporated Method and apparatus for production of textured yarn
US20140317895A1 (en) * 2012-01-07 2014-10-30 Oerlikon Textile Gmbh & Co. Kg Method and Device for Crimping a Multifilament Thread
US9410269B2 (en) * 2012-01-07 2016-08-09 Oerlikon Textile Gmbh & Co. Kg Method and device for crimping a multifilament thread
CN108914307A (zh) * 2018-07-16 2018-11-30 叶剑 一种加弹设备中的网络机构
CN111020767A (zh) * 2019-12-20 2020-04-17 苏州新育达精密机械有限公司 一种联苯热箱结构
CN111020767B (zh) * 2019-12-20 2021-06-29 苏州新育达精密机械有限公司 一种联苯热箱结构

Also Published As

Publication number Publication date
CA980558A (en) 1975-12-30
IT995392B (it) 1975-11-10
CH576018A5 (nl) 1976-05-31
AT345428B (de) 1978-09-11
BE804919A (fr) 1974-03-18
FR2200387A1 (nl) 1974-04-19
DE2346529A1 (de) 1974-04-11
ATA799473A (de) 1978-01-15
DE2346529C2 (de) 1984-06-20
LU68429A1 (nl) 1973-11-26
NL7312789A (nl) 1974-03-20
CH1322073A4 (nl) 1975-10-15
FR2200387B1 (nl) 1979-01-26
CH575023B5 (nl) 1976-04-30

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