US3380676A - Cutting mechanism for automatic winding machines - Google Patents

Cutting mechanism for automatic winding machines Download PDF

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Publication number
US3380676A
US3380676A US476265A US47626565A US3380676A US 3380676 A US3380676 A US 3380676A US 476265 A US476265 A US 476265A US 47626565 A US47626565 A US 47626565A US 3380676 A US3380676 A US 3380676A
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United States
Prior art keywords
yarn
cutting
wind
bobbin
cutting element
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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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US476265A
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English (en)
Inventor
Jenny Rudolf
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.)
Machinenfabrik Schweiter AG
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Machinenfabrik Schweiter AG
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Application filed by Machinenfabrik Schweiter AG filed Critical Machinenfabrik Schweiter AG
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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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/71—Arrangements for severing filamentary materials
    • 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 mentioned relatively long free yarn end is generally attributable to the fact that the yarn cutting knife is usually mounted at the yarn cleaner and such, due to lateral deviation of the yarn, must be located -a certain distance from the wind-up bobbin. Additionally, the lateral sliding-ofi of the free yarn end is enhanced since cutting of the yarn can take place at the ends of the bobbin.
  • the present invention has for one of its primary objects to provide an improved construction of cutting mechanism for winders which effectively overcomes such disadvantages.
  • Still another very important object of the present invention is concerned with providing an improved cutter mechanism for winders which cuts off long yarn ends at the wind-up side of a vwnding station to thereby reduce the chances of such yarn end becoming entangled at the body of the wind-up bobbin.
  • the present invention contemplates providing improved cutter mechanism wherein a cutting element arranged in the neighborhood of the wind-up bobbin cooperates with a normally ineffectual yarn catcher or seizing element disposed in a vertical plane extending through substantially the central region of the wind-up bobbin. Moreover, a yarn feeler cooperates with the yarn catcher ele- 3,380,676 Patented Apr. 30, 1968 ment and renders such effectual upon the appearance of a yarn fault prior to operation of the cutting element. Hence, when the yarn is cut the resulting relatively short yarn end is disposed at the central region of the wind-up bobbin and can be readily seized by the automatic yarn finder.
  • FIGURE 1 schematically illustrates a preferred embodiment of cutter mechanism arranged at a winding station of a winding machine
  • FIGURE 2 is an enlarged view showing details of the yarncutting knife.
  • FIGURE 3 is a plan view of the cutting knife of FIGURE 2 in a different operational position.
  • FIGURE 1 the winding station or location W schematically depicted in FIGURE 1 is located at a conventional automatic winding machine or winder which is equipped with a known automatic mechanism for removal of a yarn disturbance of defect which may occur at such winding station W.
  • this automatic mechanism possesses operable yarn finders and a knotter, such components functioning automatically. Details of the automatic mechanism have been intentionally omitted from the drawing since they are not necessary for understanding the inventive teachings and its physical structure does not form part of the inventive subject matter.
  • a wind-off bobbin or cop 1 from which is payed-off the thread or yarn F which then travels through an inlet eyelet 2, a standard yarn brake means 3, a yarn feeler 4 and a yarn inlet plate 5.
  • This yarn feeler 4 can be a conventional yarn sensing element or bracket or an electronic yarn cleaner for instance. In the exemplary illustrated embodiment it is assumed to be an electronic yarn cleaner of standard construction. From the yarn inlet plate 5 the yarn F continues past a stabilization plate 6 provided with a yarn catch groove or slot 7 and the cutting element 8.
  • yarn F moves over an inlet drum or grooved drum 9 driven by any suitable drive motor 9a and then onto the wind-up bobbin 10 to thus form a cross-wound yarn package 10a.
  • the yarn catch groove or slot 7 is advantageously formed at the central region of the stabilization plate 6 to correspond with the central region of the wind-up bobbin 10.
  • FIGURES 2 and 3 which show details of the cutting or cutter unit, generally indicated by reference character C, and wherein the stabilization plate 6 is shown in phantom lines so as to expose the physical structure of the cutting element 8, mounted therebelow, it will be recognized that this cutting element 8 is pivotably mounted at a pivot pin 11 in the region or extension of the yarn catch groove 7 and at the underface of such stabilization plate 6.
  • This pivotable cutting element 8 possesses a preferably substantially V-shaped cutter or cutting opening Sa bounded by a cutting knife edge and a curved cover piece or bracket 8b which extends in arcshaped manner with respect to the pivot pin 11.
  • the cutting element 8 with the cutting knife 80 is integrally formed with the cover bracket 81) yet is conceivable that the actual cutting element and cover bracket are separate members.
  • this curved piece 8b When this curved piece 8b is in the position depicted in FIGURE 2, it covers the yarn catch groove 7 and allows the yarn F to glide, during the normal winding operation, without resistance past this yarn catch groove 7.
  • An impermissible thickening or contamination of the yarn F causes the electronic yarn cleaner 4 to generate a current pulse which presses a displaceable core 12 of the electromagnet 13 against a pre-stressed leaf or blade spring 14.
  • the use of electronic yarn cleaners or other yarn feelers for generating an impulse to actuate and electromagnet is well known to the art. For instance, such has been disclosed in my copending US. patent application, Ser. No. 277,810, filed May 3, 1963, now US. Patent No. 3,224,693 and entitled, Control Device for a Winding Machine, and for which reason the operable connection between electromagnet 13 and yarn cleaner 4 is only schematically indicated in FIGURE 2 by the line bearing reference character 20.
  • the aforementioned pre-stressed blade spring 14 is clamped at the stabilization plate 6 between the cutting element 8 and a counter-support 15. This clamping action is specifically elfected such that the bowed portion 140: of the blade spring 14 is directed towards the core 12 and When the electrom-agnet 13 is without current i.e. in rest position, this spring presses the cutting knife or element 8 against the stop member 16.
  • Cutting element 8 is moved into the other terminal position to bear against the other terminal stop 16a under the action of the electromagnet 13 by exciting the latter, whereby the core 12 appropriately flexes or bends the blade spring 14 and causes cutting element 8 to be rotated in counter-clockwise direction.
  • the previously mentioned V-shaped cutter opening 8a is spatially positioned beneath the yarn catch groove 7, as best seen by inspecting FIGURE 3.
  • the curved cover piece or bracket 8b consequently frees the yarn catch groove 7, the yarn F during its next ascending movement or travel falling into this yarn catch groove 7.
  • the latter causes the yarn F to have the tendency to travel towards the central region of the grooved drum 9 and thus also towards the central region of the wind-up bobbin 19.
  • this cutting element 8 is always brough back into its rest position 14 when the eleetromagnet is without current, in other words is pivoted back against the terminal stop 16 and, thus, the yarn F is cut by the cutting or knife edge 8c. It is of further signficance to mention that, depending upon the speed of travel of the yarn F, it is possible to provide a time-delay in the current circuit of the electromagnet 13.
  • a yarn cutting apparatus for an automatic winding machine which comprises a winding station including a wind-up bobbin for winding yarn into a yarn package, said yarn cutting apparatus comprising a cutting element disposed in the neighborhood of said wind-up bobbin, a yarn feeler device cooperating with said cutting element, and a yarn catcher element comprising a closeable groove disposed in a substantially vetrical plane extending substantially through the center of said wind-up bobbin, said yarn feeler device cooperating with said yarn catcher element.
  • said yarn catcher element is normally ineffectual, further comprising actuating means responsive to operation of said yarn feeler device for rendering said yarn catcher element effectual upon the presence of a faulty yarn condition prior to operation of said cutting element for cutting the yarn.
  • said actuating means comprises an electromagnet having a displaceable core, said cutting element being pivotably mounted and including a cutting knife, a blade spring for pivoting said cutting element, said displaceable core coacting with said spring.
  • said yarn catcher element comprises a plate member provided with a yarn catch groove, a movably mounted cover bracket for said yarn catch groove.
  • a winding station including a wind-up bobbin for winding yarn into a yarn package, a cutting element arranged in the neighborhood of said wind-up bobbin, a yarn catcher element which is normally ineffectual cooperating with said cutting element, said yarn catcher element being disposed in a vertical plane extending substantially through the central region of said wind-up bobbin, a yarn feeler device operably connected with said cutting element for actuating the same, and actuating means for said cutting element responsive to operation of said yarn feeler device for rendering said yarn catcher element effectual upon the presence of a faulty yarn condition prior to operation of said cutting element for cutting the yarn.
  • a cutter unit for winding machines comprising a plate member provided with a yarn catch groove, a cutting element pivotably mounted in the region of said yarn catch groove and movable into a first position for covering said yarn catch groove to render the latter ineffectual and into a second position freeing said yarn catch groove to allow a yarn to enter the same, said cutting element including a cutter knife means for cutting the yarn.
  • a cutter unit for winding machines comprising a plate member provided with a yarn catch groove, a cutting element pivotably mounted in. the region of said yarn catch groove and movable into a first position for covering said yarn catch groove to render the latter ineffectual and into a second position freeing said yarn catch groove to allow a yarn to enter the same, said cutting element including a cutter knife means for cutting the yarn and a curved portion for deflecting the yarn away from said yarn catch groove.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US476265A 1964-08-05 1965-08-02 Cutting mechanism for automatic winding machines Expired - Lifetime US3380676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1022664A CH426578A (de) 1964-08-05 1964-08-05 Faden-Schneidevorrichtung an automatischen Spulmaschinen

Publications (1)

Publication Number Publication Date
US3380676A true US3380676A (en) 1968-04-30

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ID=4360813

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Application Number Title Priority Date Filing Date
US476265A Expired - Lifetime US3380676A (en) 1964-08-05 1965-08-02 Cutting mechanism for automatic winding machines

Country Status (5)

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US (1) US3380676A (de)
AT (1) AT260076B (de)
CH (1) CH426578A (de)
DE (1) DE1560453B1 (de)
GB (1) GB1113031A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685752A (en) * 1968-11-06 1972-08-22 Rieter Ag Maschf Method and apparatus for processing a thread on a draw-spin-winding machine
EP0267865A1 (de) * 1986-11-08 1988-05-18 Apsley Metals Limited Einrichtung zum Führen eines Fadens
US5568897A (en) * 1993-12-24 1996-10-29 Menegatto S.R.L. Cutter for cutting yarn in textile machines
DE19850538A1 (de) * 1998-11-03 2000-05-04 Rieter Ingolstadt Spinnerei Fadenführung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH638751A5 (de) * 1979-03-08 1983-10-14 Schweiter Ag Maschf Verfahren und fadentrennvorrichtung zur verhinderung der bildung von restfaeden an der spulstelle einer spulmaschine.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561126A (en) * 1949-06-15 1951-07-17 Robbins Cloth Mills Inc Slub catcher
US2797053A (en) * 1953-07-27 1957-06-25 Reiners Walter Dr Ing Cutting device for winding machines
US2883732A (en) * 1955-08-04 1959-04-28 Pneumafil Corp Yarn handling apparatus
US3113368A (en) * 1960-11-17 1963-12-10 Monsanto Chemicals Filament severing devices
US3269669A (en) * 1963-03-22 1966-08-30 Sigel Wilhelm Thread cutter for thread reeling or spooling apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH274495A (de) * 1948-05-21 1951-04-15 Zbrojovka Brno Np Führungsmechanismus an einer Kreuzspulmaschine.
FR1241064A (fr) * 1958-11-25 1960-09-09 Bobinoir à guide-fil rotatif
US3136495A (en) * 1961-07-15 1964-06-09 Reiners Walter Yarn-guiding device for coil-winding machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561126A (en) * 1949-06-15 1951-07-17 Robbins Cloth Mills Inc Slub catcher
US2797053A (en) * 1953-07-27 1957-06-25 Reiners Walter Dr Ing Cutting device for winding machines
US2883732A (en) * 1955-08-04 1959-04-28 Pneumafil Corp Yarn handling apparatus
US3113368A (en) * 1960-11-17 1963-12-10 Monsanto Chemicals Filament severing devices
US3269669A (en) * 1963-03-22 1966-08-30 Sigel Wilhelm Thread cutter for thread reeling or spooling apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685752A (en) * 1968-11-06 1972-08-22 Rieter Ag Maschf Method and apparatus for processing a thread on a draw-spin-winding machine
EP0267865A1 (de) * 1986-11-08 1988-05-18 Apsley Metals Limited Einrichtung zum Führen eines Fadens
US4869773A (en) * 1986-11-08 1989-09-26 Apsley Metals Limited Cord guide device
US5568897A (en) * 1993-12-24 1996-10-29 Menegatto S.R.L. Cutter for cutting yarn in textile machines
DE19850538A1 (de) * 1998-11-03 2000-05-04 Rieter Ingolstadt Spinnerei Fadenführung
US6276122B1 (en) 1998-11-03 2001-08-21 Rieter Ingolstadt Spinnereimaschinenbau Ag Apparatus for the guidance of thread in a spinning station

Also Published As

Publication number Publication date
AT260076B (de) 1968-02-12
DE1560453B1 (de) 1971-08-05
CH426578A (de) 1966-12-15
GB1113031A (en) 1968-05-08

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