US3643414A - Checking mechanism for detecting yarn breakages in open end spinning machines - Google Patents

Checking mechanism for detecting yarn breakages in open end spinning machines Download PDF

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Publication number
US3643414A
US3643414A US17734A US3643414DA US3643414A US 3643414 A US3643414 A US 3643414A US 17734 A US17734 A US 17734A US 3643414D A US3643414D A US 3643414DA US 3643414 A US3643414 A US 3643414A
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US
United States
Prior art keywords
yarn
lever
extension
groove
tube
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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
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US17734A
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English (en)
Inventor
Miloslav Prochazka
Karel Kaulich
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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Publication date
Application filed by Elitex Zavody Textilniho filed Critical Elitex Zavody Textilniho
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Publication of US3643414A publication Critical patent/US3643414A/en
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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
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/1616—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material characterised by the detector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/088—Clamping device
    • 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

  • the parts are so arranged that when the yarn is unbroken and extends from the mouth of the tube to yam-withdrawing rolls, the yarn engages the outer edge of the plate to maintain the lever in its fibrous material feeding position.
  • the lever tips to stop the feeding of fibrous material, the plate then covering the groove on the extension.
  • a yarn is introduced into the groove and thence into the withdrawing tube.
  • the yarn is automatically placed under tension, thereby to hold the lever in its fibrous material feeding position.
  • the present invention relates to a checking mechanism for detecting yarn breakages in open end yarn-spinning machines; such mechanism is particularly adapted for use with machines in which a spinning chamber under pressure is used, although it is not limited thereto.
  • checking mechanisms for detecting yarn breakages in spinning machines of the type indicated above are known. Said mechanisms are usually situated between the withdrawing tube of the spinning unit and the withdrawing rollers. These checking mechanisms work on the basis of various principles, e.g., mechanical, electromagnetic, or pneumatic or other similar principles. All types of checking mechanisms, however, have one similar element, i.e., a swingable lever, the position of which is determined by the tension of the yarn to be withdrawn from the spinning unit. Upon swinging said lever into the switching-off position upon yarn breakage, a mechanism for either directly stopping or for emitting a pulse for stopping the feeding of fibrous material into the spinning unit, is actuated.
  • a swingable lever the position of which is determined by the tension of the yarn to be withdrawn from the spinning unit.
  • the contact part of the swingable lever is usually made of wire, the bent end of which is the actual yarn feeding part.
  • the yarn is introduced at first into the withdrawing tube of the spinning unit and only afterwards behind the contact part of the lever, which is acted upon by the pull of the said yarn.
  • the bent end of the contact part of the swingable lever is situated in the immediate proximity of the mouth of the withdrawing tube of the spinning unit, the work of the attendant is made more difficult when spinning-in, due to double reintroduction of the yarn end, first into the withdrawing tube, and second, behind the contact part of the lever.
  • the checking mechanism according to the present invention has for its purpose the mitigation of the above disadvantages inherent in the embodiments known hitherto.
  • the present checking mechanism includes an extension mounted on the mouth of the withdrawing tube of the spinning unit, and a swingable lever cooperating with the said extension.
  • FIG. I is a schematic view, partially in side elevation and partially in vertical section of a checking mechanism in accordance with the invention, such mechanism being shown employed with a spinning machine;
  • FIG. 2 is a plan view of the mechanism as shown in FIG. l;
  • FIG. 3 is a view similar to FIG. I but with the parts in the position which they assume upon spinning-in.
  • the checking mechanism consists of an extension piece 2, mounted on to the mouth of the withdrawing tube 1.
  • the extension piece is made in form of a knee and is provided in the part above the mouth of the withdrawing tube ll of a spinning unit 8 with a groove 2', the end of which debouches into the withdrawing tube 1 of the spinning unit.
  • a swingable lever 4 mounted swingably about pivot on the stationary part of the machine, cooperates with the said extension piece 2.
  • the contact part 4 of the swingable lever 4 is made in the form of a plate, the width of which is at least equal to or larger than the width of groove 2 in the extension piece 2.
  • the lower end of the swingable lever 4 is connected to a mechanism or device to be described, which interrupts either directly or by emitting a pulse, the feeding of fibrous material into the corresponding spinning unit a upon breakage of yarn 3, which leaves the mouth of the withdrawing tube l of the not shown spinning unit.
  • withdrawing rollers 6,7 are situated for withdrawing yarn 3 from the withdrawing tube 1 of the spinning unit 8 to a winding mechanism (not shown),
  • sliver or roving 9 is fed to the feeding opening 10 of unit 8 by cooperating rolls 111,112 of which roll ill is shown as being driven.
  • a rotatable driving means here shown as a shaft T4
  • the clutch is of the electromagnetically controlled type, the clutch being engaged when the lever 4 is positioned as in FIG. I, by being energized through a circuit 17 in which a mercury switch 16 mounted on the lower end of lever 4 is interposed.
  • the switch 16 opens circuit 17 and thereby disengages clutch 15.
  • the feeding of fibrous material into the spinning unit 8 is now stopped.
  • the mechanism according to the present invention works as follows:
  • yarn 3 is shown being withdrawn by withdrawing rollers 6,7 from the mouth of the withdrawing tube 1 of the spinning unit 8 through the extension piece 2 beside the swingable lever 4, the upper, contact part 4' of which is in contact with the yarn 3. Rollers 6,7 forward yarn 3 to winding mechanism, not shown.
  • the tension of yarn 3 drops and the swingable lever 4 drops into its FIG. 3 position, swinging into the position S, as shown.
  • the contact part 4' ' now bears with its whole surface against the extension piece 2, whereupon groove 2 in said extension piece is covered (FIG. 3). There is thus formed an extension of the mouth of the withdrawing tube ll of the spinning unit 8.
  • the lower part of the swingable lever 4 upon swinging in the direction opposite to S, actuates the abovedescribed device for stopping the feeding of fibrous material into the spinning unit 8.
  • This device can also be constituted by a microswitch, a part of a mechanical coupling, or a similar device.
  • the rolls 6,7 are also stopped upon the loss of tension in yarn 3.
  • the advantage of the mechanism according to the present invention consists, upon comparison with the devices known hitherto, of the fact that it is extremely simple and reliable in its function, and particularly in that said mechanism removes double introduction of yarn upon spinning-in, thus substantially simplifying the task of attending the machine.
  • a lateral extension on the outer end of the yarn withdrawal tube said extension having a groove therein, a swingable lever having an arm with an end portion in the form of a plate which overlies and closely covers the groove in the extension when the lever is in a first terminal position which it assumes upon yarn breakage,
  • the grooved extension and end portion of the lever providing a yarn receiving passage therebetween communicating with said predetermined path when the lever is in its first terminal position, and means operated by the lever to stop the means for feeding fibrous material into the spinning machine upon the breakage of yarn issuing therefrom and the swinging of the lever into its first terminal position.
  • extension is generally of L-shape, a first horizontal leg of the extension being connected at its outer end to the tube, the second vertical leg of the extension being disposed parallel to and beyond the tube, said groove extending along both legs of the extension.
  • the lever is a first-class lever and comprises a second arm, the second arm being connected to control means constituting a part of the means operated by the lever to stop the means for feeding fibrous material into the spinning machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US17734A 1969-03-10 1970-03-09 Checking mechanism for detecting yarn breakages in open end spinning machines Expired - Lifetime US3643414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS171569 1969-03-10

Publications (1)

Publication Number Publication Date
US3643414A true US3643414A (en) 1972-02-22

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Application Number Title Priority Date Filing Date
US17734A Expired - Lifetime US3643414A (en) 1969-03-10 1970-03-09 Checking mechanism for detecting yarn breakages in open end spinning machines

Country Status (5)

Country Link
US (1) US3643414A (de)
CH (1) CH505228A (de)
DE (1) DE2010312A1 (de)
FR (1) FR2037911A5 (de)
GB (1) GB1271914A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728853A (en) * 1970-07-23 1973-04-24 Rieter Ag Maschf Method and apparatus for interrupting the supply of fiber material to a spinning machine
US3975894A (en) * 1972-12-28 1976-08-24 Toyoda Automatic Loom Works, Ltd. Vibration and sound dampening means
US5193332A (en) * 1989-07-04 1993-03-16 Albert Kriegler Spinning or twisting device with a pipe shaped element capable of being subjected to negative pressure
CN105297208A (zh) * 2014-06-02 2016-02-03 株式会社丰田自动织机 用于协助环型纺纱机中的接纱的设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004056347A1 (de) * 2004-11-22 2006-05-24 Sbm Maschinen Gmbh Verfahren und Vorrichtung zur Verarbeitung von Bioabfällen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334479A (en) * 1966-03-11 1967-08-08 Vyzk Ustav Bavlnarsky Device for securing yarn during stoppage of the spinning mechanism for the continuous ringless spinning of textile fibers
US3354631A (en) * 1964-04-20 1967-11-28 Vyzk Ustav Bavlnarsky Method and apparatus for preventing interruption of a spinning process during breakage of the spun thread
US3462936A (en) * 1965-12-01 1969-08-26 Vyzk Ustav Bavlnarsky Stop motion for open end spinning machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354631A (en) * 1964-04-20 1967-11-28 Vyzk Ustav Bavlnarsky Method and apparatus for preventing interruption of a spinning process during breakage of the spun thread
US3462936A (en) * 1965-12-01 1969-08-26 Vyzk Ustav Bavlnarsky Stop motion for open end spinning machines
US3334479A (en) * 1966-03-11 1967-08-08 Vyzk Ustav Bavlnarsky Device for securing yarn during stoppage of the spinning mechanism for the continuous ringless spinning of textile fibers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728853A (en) * 1970-07-23 1973-04-24 Rieter Ag Maschf Method and apparatus for interrupting the supply of fiber material to a spinning machine
US3975894A (en) * 1972-12-28 1976-08-24 Toyoda Automatic Loom Works, Ltd. Vibration and sound dampening means
US5193332A (en) * 1989-07-04 1993-03-16 Albert Kriegler Spinning or twisting device with a pipe shaped element capable of being subjected to negative pressure
CN105297208A (zh) * 2014-06-02 2016-02-03 株式会社丰田自动织机 用于协助环型纺纱机中的接纱的设备

Also Published As

Publication number Publication date
CH505228A (de) 1971-03-31
FR2037911A5 (de) 1970-12-31
DE2010312A1 (de) 1970-09-24
GB1271914A (en) 1972-04-26

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