US3673649A - Yarn feed control means - Google Patents

Yarn feed control means Download PDF

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Publication number
US3673649A
US3673649A US2571A US3673649DA US3673649A US 3673649 A US3673649 A US 3673649A US 2571 A US2571 A US 2571A US 3673649D A US3673649D A US 3673649DA US 3673649 A US3673649 A US 3673649A
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United States
Prior art keywords
yarn
magazine
feeding
sensor
magnet
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Expired - Lifetime
Application number
US2571A
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English (en)
Inventor
Jirl Havlas
Premsyl Kostelecky
Jaroslav Sedlarik
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.)
Elitex Zavody Textilniho
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Elitex Zavody Textilniho
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • ABSTRACT Apparatus for automatically controlling the feeding of yarn into yarn supply magazines whereby to form a sufficient yarn supply in the yarn magazine for knotting together the two yarn ends, upon their breakage, without stopping the machine.
  • the apparatus of the invention employs an adjustable sensor mounted upon the magazine, means for feeding yarn into the yarn supply magazine and means responsive to the sensor for feeding yarn into the magazine upon the attainment of a predetermined desired volume of yarn in the magazine.
  • the apparatus of the invention responds to the completion of the filling of the yarn supply in the magazine, as well as responding to fluctuations of the volume of said supply, with a minimum delay.
  • the present invention relates to a device for automatically controlling the feeding of yarn into a yarn supply magazine in textile machines and more particularly to a device in which the feeding of the yarn being processed may be interrupted without interrupting the operation of said machine.
  • the feeding of yarn being processed may be interrupted without interrupting the operation of said machine.
  • the device is based upon the principle of forming a sufficient yarn supply in the yarn magazine for knotting together the two yarn ends, upon their breakage, without stopping the machine, i.e. in the course of the normal operation of said machine.
  • the invention has among its objects the overcoming of the said disadvantages and providing a device which responds to the completion of the filling of the yarn supply in the magazine, as well as responding to fluctuations of the volume of said supply, with a minimum delay.
  • the invention accomplishes such results, generally speaking, by providing a device which comprises an adjustable sensor mounted on the magazine and connected to means for interrupting the means for feeding yarn into the yarn supplymagazine.
  • FIG. 1 schematically illustrates one embodiment of the present invention in side view section
  • FIG. 2 shows a modification of the device as shown in FIG. 1 in side'elevation section
  • FIG. 3 schematically illustrates a further embodiment of the device according to the present invention in side elevation section
  • FIG. 4 is a diagram of a modification of the embodiment of the device as shown in FIG. 3 in side elevation section;
  • FIG. 5 is a diagram of another embodiment of the device according to the present invention in side elevation section
  • FIG. 6 is a diagram of a modification of the embodiment of the device as shown in FIG. 5 in side elevation section;
  • FIG. 7 is a diagram of a further embodiment of the device according to the present invention in side elevation section.
  • FIG. 8 is a diagram of the modification of the embodiement of the device as shown in FIG. 7 in side elevation section.
  • the device according to the present invention shown in FIG. 1 consists of a bottom 9, mounted at the exit of a magazine 8, which is provided at its inlet with an ejector 8', said ejector being connected to a source of pressure air (not shown) by means of which the yarn 19 is tensioned upon being fed into the magazine 8.
  • a tow-arm lever 10 is mounted swingably about a pivot in a frame 10'.
  • the two-arm lever 10 is provided on one arm with an adjustable weight 11 and on the other arm with a permanent magnet 12, said magnet being in slidable contact with a magnetically operated reed type relay switch 13, which is mounted behind the frame 10'.
  • the contacts of the relay switch 13 are connected to a power source (not shown) and through a relay 13' to an electromagnet 14, the core 14 of which is surrounded by a coil compression spring 14".
  • the core 14' is provided on its outer end with a yarn guide 18, in which the yarn 19 is located.
  • the yarn guide 18 is mounted below a set of feeding rollers 5,6 which are in mutual contact. At least one of said rollers 5,6 is driven from a driving source (not shown).
  • the yarn 19 is withdrawn from the supply bobbin 1 and passes over guiding roller 2, through a brake 3 and over a guiding roller 4, thereafter passing through the guide 18 and being fed by means of the pair of feeding rollers 5,6.
  • the yarn then passes over a guiding roller 7 and into the ejector 8' located at the inlet of magazine 8.
  • the yarn in said magazine constitutes a plug which is pressed against the bottom 9 of magazine 8 and is withdrawn therefrom in the form of yarn 19 over a conventional (not shown) winding drum and on to a bobbin not shown.
  • the bottom 9 acts against the pressure of the plug; the bottom is always located at a certain distance from the end of the magazine 8, for the purpose of enabling a continuous withdrawal of yarn 19 towards the wound bobbin, by the action of the weight 11 mounted on one arm of the two-arm lever 10, said bottom 9 being connected therewith.
  • the pressure of the yarn plug in the magazine 8 acquires a higher level than the force exerted on the bottom 9 by the weight 11 (such force is usually chosen such as to be that reached by the kind of yarn to be processed upon filling the magazine 8); at that time the bottom 9 swings out in the direction of arrow S; two-arm lever 10 swings with the bottom, thearm of said lever carrying the permanent magnet 12 is swung out in the direction of arrow 8,.
  • the magnet 12 is thus displaced along the relay switch 13 into a position, at which the contacts of the said switch are closed.
  • the electromagnet 14 is energized through relay 13, said electromagnet drawing the core 14' into the solenoid coil (to the right) against the action of spring 14" the yarn guide 18 with the yarn 19 is thus moved in the direction of arrow 5,, whereupon the yarn is pulled axially along the feeding rollers 5,6 and out of contact therewith.
  • the yarn 19 is held in tensioned state by the ejector 8', into which air continues to be still admitted.
  • the yarn column stops pressing against the bottom 9, i.e.
  • a modification of the embodiment of FIG. 1, shown in FIG. 2, has the contacts of the relay switch 13 connected on one hand to a power source (not shown) and on the other hand to a solenoid 15 which is connected to a supply 15 of pressure air from a pressure source (not shown).
  • the solenoid 15 is connected by a conduit 15" with a pneumatic cylinder 16, to the position of which a rod 17 is afi'ixed, said rod being surrounded by a coil compression spring 17' and provided at its left hand end with a yarn guide 18, in which the yarn 19 to be processed is held.
  • the guide 18 is mounted below the feeding rollers 5,6, which are in mutual contact and at least one of them being driven from a drive source (not shown).
  • the solenoid 15 opens the supply 15 of pressure air upon the closing of the relay switch 13. Thereupon the pressure air is fed through the conduit 15 into the pneumatic cylinder 16 so as to; act upon the piston of such cylinder.
  • the piston rod 17 and the yarn guide 18 and the yarn 19 are thus displaced in the direction of arrow S so as to pull the yarn out of engagement with the feeding rollers 5,6.
  • yarn 19 is held in tensioned state by the action of the air fed continuously into the ejector 8.
  • the yarn plug stops pressing against bottom 9 which, together with the two-arm lever 10 and the permanent magnet 12 mounted on one of the arms of the said lever, is returned into its original position.
  • the contacts of the relay switch 13 are thus opened to interrupt the feeding of power to solenoid 15;the solenoid 15 then closes the inlet 15 of the pressure air, whereupon the pneumatic cylinder 16 and the conduit 15" are de aerated in a known manner.
  • the piston of the cylinder 16 and the rod 17 of said piston are returned, together with yarn guide 18 into their original position by means of spring 17, whereupon yarn 19 is returned to be disposed between the feeding rollers 5,6 which again feed said yarn into the magazine 8.
  • FIG. 3 A further embodiment of the device according to the present invention is shown in FIG. 3.
  • the bottom 9 of magazine 8, which is provided at its inlet with an ejector 8', is mounted as in FIGS. 1 and 2, on a two-arm lever 10 which is pivotally mounted on a pivot on frame 10'.
  • the two-arm lever 10 is provided on one of its arms with an adjustable weight 11 and on the other arm with a permanent magnet 12 which is in slidable contact with a reed type relay switch 13 mounted behind the frame 10'.
  • the contacts of the relay switch 13 are connected on one hand to a power source (not shown), and on the other hand through a relay 13' to an electromagnet 14, the core 14' of which is surrounded by a coil compression spring 14" and is connected at its outer end to one of the feeding rollers 5,6.
  • the electromagnet 14 is energized through the relay 13' upon the closing of the relay switch13 by means of the magnet 12 when the two-arm lever 10 is swung out in the direction of arrow S in consequence of the overcoming of the force of weight 11 by the yarn plug in the magazine 8. Said electromagnet 14, .upon
  • FIG. 4 A modification of the embodiment as shown in FIG. 3 is shown in FIG. 4..
  • a solenoid 15 is used, to which a supply 15' of pressure air from a source (not shown) is connected.
  • the solenoid is connected by means of a conduit 15 to a pnuematic cylinder 16, to the piston of which a rod 17 is affixed.
  • the piston rod is surrounded by a coil compression spring 17 which is connected with one of its ends to one of the two feeding rollers 5,6.
  • the solenoid 15 is activated upon closing the relay switch 13, said solenoid opening the inlet of pressure air 15 whereupon said pressure air is fed through the conduit 15" into the pneumatic cylinder 16, acting with its pressure upon the piston.
  • the piston is displaced, together with the rod 17 and the feeding rollerwhich is connected to the said rod, to the right against the action of spring 17', in the direction of arrow S,, whereupon the'feeding roller 5 is pulled out of engagement with the other feeding roller.
  • the feeding of yarn 19 into the magazine 8 is thus interrupted and the yarn 19 is held in a tensioned state by the action of the air fed continuously to theejector 8'.
  • the bottom 9 of magazine 8 is returned, together with a two-arm lever 10 and the magnet 12 mounted on one of the arms of said lever, into their original position, whereupon the relay switch is opened and the solenoid 15 closes the inlet 15' of pressure air.
  • the pneumatic cylinder 16 is de-aerated together with the line 15" in a known manner, whereupon the piston of cylinder 16, together with the rod 17 and the feeding roller which is connected to said rod, are returned by spring 17' into their original position. Thereby also the displaced feeding roller is returned to its original position, i.e. into engagement with the other feeding roller, thus continuing the feeding of yarn 19 into the magazine 8.
  • FIG. 5 A further embodiment of the device according to the present invention is shown in FIG. 5.
  • photocells 20', 21' are used together with respective cooperating light sources 20, 21, mounted beside each other at the inlet of the yarn magazine 8, which is provided, as before, at the inlet with an ejector 8'.
  • the magazine 8 is provided with a transparent sidewall, so that light from light sources 20, 21 falls upon the respective photocells 20', 21 in the absence of an intervening part of a yarn column in the magazine.
  • the photocells 20, 21 are connected through the relay 13 with an electromagnet 14, the core 14' of which is surrounded by a coil compression spring 14" and is provided at its outer end with a yarn guide 18, in which the yarn 19 to be processed is held.
  • the yarn guide is mounted below the pair of feeding rollers 5,6 which are in mutual contact and of which at least one is driven from a drive source (not shown).
  • the yarn 19 is withdrawn from the bobbin 1 and guided over the guiding roller 2, passes through the brake 3, over the guiding roller 4 and through the guide 18 to between the feeding rollers 5,6. It then passes over the guiding roller 7 and the ejector 8' into the magazine 8, where it is laid in form of a yarn plug. The yarn is withdrawn from the other end of said magazine 8 in the form of yarn 19 to a wound bobbin (not shown).
  • the relay 13' is switched on by interruption of the light beam of the light sources 20, 21, said relay actuating the electromagnet 14, which draws the core 14' against action of spring 14" together with the guide 18 in the direction of arrow S whereby the yarn 19 is displaced from between the feeding rollers 5,6 and is held in tensioned condition by the action of air fed continuously into the ejector 8.
  • the end of the yarn plug in the magazine 8 advances in the direction of withdrawal of yarn 19 from the magazine 8.
  • FIG. 6 A modification of this embodiment is shown in FIG. 6; there the electromagnet 14 is replaced by a solenoid 15, to which is connected a supply 15' of pressure air for a pressure air source (not shown).
  • the said solenoid 15 is connected by a conduit 15" to a pneumatic cylinder 16, on the piston of which a rod 17 is mounted.
  • Rod 17 is surrounded by a spring 17' and is provided at its end with a yarn guide 16, in which the yarn 19 to be processed is held.
  • Said guide .18 is mounted below the two feeding rollers 5,6 which are in mutual contactand. of which at least one is driven from a drive source (not shown).
  • the solenoid 15 is actuated upon interruption of the light beam-between the light sources 20, 21 and the pertinent photocells 20', 21, said solenoid opening the inlet 15 of pressure air, which is fed through the conduit 15" into the pneumatic cylinder 16.
  • Pressure air upon acting on the piston of rod 17 is displaced, together with the guide 18, in the direction of arrow S against the action of spring 17.
  • Rod 17 in this manner displaces the yarn 19 from engagement with the feeding rollers 5,6; the feeding of further yarn supply into the magazine 8 is thus interrupted.
  • the yarn 19 is held in tensioned condition by the action of air continuously fed into the ejector 8.
  • the light beams of the light sources 20, 21 act upon the pertinent photocells 21', whereupon the inlet 15' of pressure air is closed by solenoid 15; the pneumatic cylinder 16, together with the conduit 15", is de-aerated in a known manner, so that the piston of cylinder 16 and the rod 17 with the yarn guide 18 are pressed by action of spring 17' into their original position.
  • the yarn 19 is thereby brought again between the feeding rollers 5,6 and the feeding of a yarn supply into the magazine is resumed.
  • FIG. 7 A further embodiment of the device according to the present invention is shown in FIG. 7.
  • photocells 20', 21' with the pertinent light sources 20, 21 are again used.
  • the photocells 20', 21' are connected through a relay 13' with an electromagnet 14, the core 14' of which is surrounded by a spring 14" and is connected with one of the two feeding rollers 5,6.
  • the relay 13' is switched on, after the end of the yarn column reached the area between the light sources 20, 21 and the pertinent photocells 20', 21, the said relay l3 energizing the electromagnet 14, the core 14 of which is drawn against the action of spring 14" in the direction of arrow 8:, together with the feeding roller 5 mounted thereto, the said roller 5 being thus drawn out of engagement with the feeding roller 6.
  • the feeding of yarn 19 into the magazine 8 is thus being interrupted.
  • the yarn 19 is held in tensioned condition by the continued action of ejector 8'.
  • the electromagnet 14 is replaced by a solenoid 15, to which a pressure air supply 15' from a pressure air source (not shown) is connected.
  • the solenoid 15 is connected by the line 15" with a pnuematic cylinder 16, on the piston of which a rod 17 is mounted. Said rod is surrounded by spring 17 and is connected to one of the two feeding rollers,
  • the solenoid 15 is switched on upon interruption of the light beam from the light sources 20, 21 by the photocells 20', 21'.
  • Said solenoid 15 opens the inlet 15' of pressure air, said pressure air being fed through the conduit 15" into the pneumatic cylinder 16, acting therein upon its piston and thus also upon its rod 17.
  • Rod 17 is displaced against the action of spring 17 in the direction of arrow S
  • the feeding roller 5 which is connected with the rod 17, is thus removed from engagement with the feeding roller 6, the feeding of yarn 19 into the magazine 8 thus being interrupted.
  • the yarn 19 is held further in tensioned condition by the uninterrupted activity of ejector 8.
  • the advantage of the device according to the present invention consists mainly in its reliable operation, simple construction and minimum response delay of the necessary steps after determining the level of the yarn supply in the magazine.
  • Apparatus for automatically controlling the feeding of yarn into a yarn magazine in a textile machine to permit the uninterrupted operation of the machine comprising a sensor for detecting the degree of filling of the magazine, means for feeding the yarn into the magazine, and means responsive to the sensor for interrupting the feeding of the yarn into the magazine when the magazine contains a predetermined amount of yarn, the sensor being mounted upon the magazine at the outlet thereof, the sensor being constituted by a bottom of the magan'ne, said bottom being mounted on a swingable lever, means yieldably biasing the bottom toward its closed position, and,a magnet mounted for movement by the bottom of the magazine and cooperating with a relay switch in the circuit of which there is connected an element for interrupting the feeding of yarn upon the opening of said bottom.
  • Apparatus according to claim 1, wherein the element for interrupting the feeding of yarn is an electromagnet the core of which is provided on one end with a yard guide selectively moved by the electromagnet.
  • Apparatus according to claim 1, wherein the element for interrupting the feeding of yarn is a solenoid disposed in the relay switch circuit, the solenoid cooperating with a pneumatic cylinder having a piston rod and a yarn guide secured to the free end of the piston rod.
  • Apparatus according to claim 1 wherein the magnet is permanent, and the relay switch is a reed switch disposed to be selectively operated by the magnet as the magnet swings with respect thereto.
  • Apparatus for automatically controlling the feeding of yarn into a yarn magazine in a textile machine to permit the uninterrupted operation of the machine comprising a sensor for detecting the degree of filling of the magazine, means for feeding the yarn into the magazine, and means responsive to the sensor for interrupting the feeding of the yarn into the magazine when the magazine contains a predetermined amount of yarn, the sensor being mounted upon the magazine at the outlet thereof, the means for feeding yarn into the magazine comprising a means for pulling the yarn from a source of supply and a means for charging the thus fed yarn into the magan'ne, the yarn pulling means comprising opposed driven yarn pressing rollers, the means responsive to the sensor selectively removing the yarn from between the driven yarn pressing rollers by pulling the yarn axially of such rollers.

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  • Tension Adjustment In Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
US2571A 1969-01-20 1970-01-13 Yarn feed control means Expired - Lifetime US3673649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS33869 1969-01-20

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US3673649A true US3673649A (en) 1972-07-04

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US2571A Expired - Lifetime US3673649A (en) 1969-01-20 1970-01-13 Yarn feed control means

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US (1) US3673649A (de)
JP (1) JPS4920254B1 (de)
CH (1) CH510579A (de)
DE (1) DE2000555A1 (de)
FR (1) FR2028724B1 (de)
GB (1) GB1286364A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2850729C2 (de) * 1978-11-23 1986-03-13 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Anspinnen eines Fadens

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634596A (en) * 1948-10-06 1953-04-14 Hampton Machine Company Apparatus for treating strands with liquid
US2734229A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2760252A (en) * 1953-08-06 1956-08-28 Alexander Smith Inc Filament crimping apparatus
US2960730A (en) * 1957-06-13 1960-11-22 Bancroft & Sons Co J Crimping apparatus
US3166821A (en) * 1962-11-26 1965-01-26 Monsanto Co Crimping apparatus
US3174206A (en) * 1961-11-29 1965-03-23 Klinger Mfg Co Ltd Apparatus for crimping yarn by bunching
US3200466A (en) * 1963-07-01 1965-08-17 Bancroft & Sons Co J Apparatus for crimping filaments
FR1495062A (fr) * 1966-09-01 1967-09-15 Elitex Zd Y Textilniho Strojvi Procédé et dispositif pour la fabrication de fil gonflé à partir d'un mélange de fibres élémentaires de contraction variable, ainsi que fil conforme à celui obtenu
US3353242A (en) * 1965-10-18 1967-11-21 Bancroft & Sons Co J Feed control for stuffer crimper

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634596A (en) * 1948-10-06 1953-04-14 Hampton Machine Company Apparatus for treating strands with liquid
US2760252A (en) * 1953-08-06 1956-08-28 Alexander Smith Inc Filament crimping apparatus
US2734229A (en) * 1954-10-08 1956-02-14 Crimping apparatus
US2960730A (en) * 1957-06-13 1960-11-22 Bancroft & Sons Co J Crimping apparatus
US3174206A (en) * 1961-11-29 1965-03-23 Klinger Mfg Co Ltd Apparatus for crimping yarn by bunching
US3166821A (en) * 1962-11-26 1965-01-26 Monsanto Co Crimping apparatus
US3200466A (en) * 1963-07-01 1965-08-17 Bancroft & Sons Co J Apparatus for crimping filaments
US3353242A (en) * 1965-10-18 1967-11-21 Bancroft & Sons Co J Feed control for stuffer crimper
FR1495062A (fr) * 1966-09-01 1967-09-15 Elitex Zd Y Textilniho Strojvi Procédé et dispositif pour la fabrication de fil gonflé à partir d'un mélange de fibres élémentaires de contraction variable, ainsi que fil conforme à celui obtenu

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Publication number Publication date
CH510579A (de) 1971-07-31
GB1286364A (en) 1972-08-23
FR2028724A1 (de) 1970-10-16
JPS4920254B1 (de) 1974-05-23
FR2028724B1 (de) 1975-12-26
DE2000555A1 (de) 1970-07-23

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