US3643883A - Lap-detecting stop motion - Google Patents

Lap-detecting stop motion Download PDF

Info

Publication number
US3643883A
US3643883A US847335A US3643883DA US3643883A US 3643883 A US3643883 A US 3643883A US 847335 A US847335 A US 847335A US 3643883D A US3643883D A US 3643883DA US 3643883 A US3643883 A US 3643883A
Authority
US
United States
Prior art keywords
feeler
roll
lap
thread
stop motion
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
US847335A
Other languages
English (en)
Inventor
Olivier Wuest
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Application granted granted Critical
Publication of US3643883A publication Critical patent/US3643883A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B65H63/003—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to winding of yarns around rotating cylinders
    • 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 There is disclosed a lap-detecting stop motion for thread transporting rolls of draw-winding, drawtwisting or takeup machines'for processing endless filaments.
  • Such stop motion comprises a feeler set closely to the roll surface, the feeler in its rest or idle position being arranged substantially in a plane containing the roll axis, wherein the feeler portion nearest to the roll can be' deflected in the direction of the roll circumference.
  • the present invention relates to a new and improved lap-detecting stop motion for the thread transporting rolls of drawwinding, drawtwisting or takeup machines for processin endless filaments.
  • threads In transporting endless filaments, hereinafter conveniently referred to as threads, usually a considerable portion of the circumference of a draw roll or separator roll is covered by thread wraps, and, in case of an end breakage or low thread tension, undesirable lap formation occurs relatively frequently, that is to say, the thread sticks to the roll and is no longer removed therefrom. This unfavorably influences the processing operation. The same adverse effect can occur on the takeup friction drums on which the thread takeup package rests even if, at best, the thread contacts the friction drum only at the contact point.
  • a primary objective of the present invention is the earliest possible detection of such lap formations in order to avoid more severe disturbances and, furthermore, stopping the thread feed as immediately as possible after detection of such lap formations.
  • Stop motions for this purpose are already known to the art, in which a pivotable tangential feeler is set close to the roll, so that this feeler, in case of lap formation, is pushed aside and activates a switch which stops the machine.
  • This arrangement possesses the great disadvantage of relatively low sensitivity, activating the switch only if the lap already has reached a certain thickness.
  • the triggering distance of the switch depends on the very small pivoting angle of the feeler and directly on the thickness of the lap forming on the roll, such thickness is particularly very small if fine deniers are processed.
  • the present invention is primarily concerned with the achievement of the aforementioned objective and the elimination of the disadvantages mentioned above, by means of a lap-detecting stop motion for thread transporting rolls of draw-winding, drawtwisting or takeup machines for processing endless filaments which is of the type comprising a feeler positioned or set closely to the roll surface.
  • the feeler in its rest or idle position is arranged substantially in a plane containing the roll axis or shaft and the feeler portion nearest to the roll can be deflected in the direction of the roll circumference.
  • the feeler can be constructed in the form of a lever, wherein the portion disposed closest to the roll can, for instance, extend completely or only partially over the width of such roll.
  • the lever can consist of a deflectable thin, flat spring or it can be rigid.
  • FIG. 1 is a schematic view of a draw-winding machine equipped with the inventive lap detecting stop motion
  • FIG. 2 shows details of the inventive lap detecting stop motion
  • FIG. 3 is an alternative design of a draw'winding location or position
  • FIG. 4 is a schematic view of a drawtwisting machine equipped with the inventive lap-detecting stop motion.
  • a monoor multifilament thread I is transferred from a suitable feed point (not shown) to a roll 2 and a separator roll 3 and from there to a draw roll 4 and a separator roll 5 both rotating faster. Then, thread 1 passes through a thread traversing device 6 onto a bobbin 7 resting on, and driven by, a drive roll 8. Closely set to drive roll 8 is a spring or resilient plate 10 deflectable in the direction of the roll circumference and mounted on a housing 9.
  • a pivotal rigid lever 10' pivotably arranged about an axis or shaft D can be substituted for an elastic thin plate 10, this rigid lever 10 can be constructed to be completely flat or only at its end confronting the roll.
  • the arrangement according to FIG. 3 differs from the one shown in FIG. I only in that here the thread after passing through the traversing thread guide 15 encircles about half the circumference of drive roll 16 before being wound onto bobbin 17. If a lap-detecting stop motion device 18, reacting fast as described above, is provided at the region of the drive roll 16 covered by the thread, the traversing thread guide 15 can be arranged very closely to drive roll 16 without danger of damage in case of lap formation.
  • the particular advantage is the possibility of keeping to a minimum the distance F between the traversing thread guide 15 and the thread takeup point A, as the shape of the package improves the closer to the takeup point A thread traversing is effected.
  • the lap detection device 19 In drawtwisting machines, such as exemplified in FIG. 4, the lap detection device 19 of course must be arranged at draw roll 20, as shown, as here no lapping occurs on spindle 21, and at which the arrangement of a detecting device would not make sense. 1
  • an additional detecting device 22 (indicated with phantom or dashed lines in FIG. 1) at draw roll 4 can be considered, in order to also immediately detect laps forming there.
  • This device is wired parallel into circuit 12.
  • a lap-detecting stop motion for thread transporting rolls of draw-winding, drawtwisting or takeup machines for processing endless filaments comprising a thread transporting roll, a feeler set closely to the roll surface, said feeler in its rest position being arranged substantially in a plane containing the roll axis, means mounting said feeler such that the feeler portion nearest to the roll surface is capable of deflecting in a direction along at least part of the roll circumference, separate cutting means arranged in spaced relationship from said feeler for cutting the thread upon lap formation at the thread transporting roll, and means operatively connecting said cutting means with said feeler for actuating said cutting means in response to detection of lap formation at said roll by said feeler.
  • said operatively connecting means includes an electric circuit, an electric switch for influencing said electric circuit, said feeler being operatively connected to said electric switch so that when said feeler is deflected said electric switch influences said electric circuit.
  • a lap-detecting stop motion according to claim 1. wherein said feeler is in the form of a lever, means providing a pivot point for said lever which is located substantially in said plane containing the roll axis.
  • a lap-detecting stop motion for thread transporting rolls of draw-winding, drawtwisting or takeup machines for processing endless filaments comprising a thread transporting roll, a substantially flat, lightweight, quickly responsive feeler arranged closely to the roll surface, said feeler in its rest position being located substantially in a plane containing the roll axis, means mounting said feeler such that the feeler portion nearest to the roll surface is capable of deflection along at least a portion of the circumference of the roll, cutting means arranged in spaced relationship from said feeler for cutting the thread upon the formation of laps at the thread transporting roll irrespective of the position of the thread at the surface of such roll, and means operatively connecting said cutting means with said feeler for actuating said cutting means in response to detection of lap formation at said roll surface by said feeler.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
US847335A 1968-08-08 1969-08-04 Lap-detecting stop motion Expired - Lifetime US3643883A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1211968A CH494832A (de) 1968-08-08 1968-08-08 Wickel-Überwachungsvorrichtung

Publications (1)

Publication Number Publication Date
US3643883A true US3643883A (en) 1972-02-22

Family

ID=4380034

Family Applications (1)

Application Number Title Priority Date Filing Date
US847335A Expired - Lifetime US3643883A (en) 1968-08-08 1969-08-04 Lap-detecting stop motion

Country Status (5)

Country Link
US (1) US3643883A (enrdf_load_stackoverflow)
CH (1) CH494832A (enrdf_load_stackoverflow)
DE (1) DE1940272B2 (enrdf_load_stackoverflow)
FR (1) FR2015258A1 (enrdf_load_stackoverflow)
GB (1) GB1275974A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030281A (en) * 1974-09-03 1977-06-21 Heberlein Hispano S.A. Surveying device
US4055936A (en) * 1975-05-16 1977-11-01 W. Schlafhorst & Co. Method for terminating a spinning operation
US4343144A (en) * 1980-02-28 1982-08-10 Rieter Machine Works Ltd. Control arrangement for a textile machine
US4677387A (en) * 1984-01-12 1987-06-30 Rieter Machine Works, Ltd. Package quality monitor
EP0979794A3 (en) * 1998-08-11 2000-11-02 Murata Kikai Kabushiki Kaisha Take-up winding device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422582A1 (fr) * 1978-04-12 1979-11-09 Coignet Sa Detecteur de composition de moufflage d'un enfin de levage
US4713655A (en) * 1985-06-18 1987-12-15 Rieter Machine Works, Ltd. Method of monitoring the quality of a package of thread
DE3942884A1 (de) * 1989-12-23 1991-06-27 Sitec Gmbh Sicherheitseinricht Trommelschleuse

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635693A (en) * 1926-06-12 1927-07-12 Walter J Scott Stop motion for drawing frames
US2006055A (en) * 1933-06-20 1935-06-25 Foster Machine Co Lap arrester for winding machines
US2084810A (en) * 1935-09-09 1937-06-22 Bibb Mfg Company Electrical stop motion for roving frames
FR952571A (fr) * 1946-09-05 1949-11-21 Zbrojovka Brno Np Bobineuse avec dispositif de coupage automatique du fil
FR1192766A (fr) * 1957-03-08 1959-10-28 Dispositif de mise à l'arrêt pour bobinoir
US3081046A (en) * 1960-05-19 1963-03-12 Leesona Corp Package control mechanism for winding machines
US3169716A (en) * 1958-06-11 1965-02-16 Reiners Walter Drum-wrap and thread-break lockout for winding machines
US3512690A (en) * 1967-10-27 1970-05-19 Leesona Corp Strand control apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635693A (en) * 1926-06-12 1927-07-12 Walter J Scott Stop motion for drawing frames
US2006055A (en) * 1933-06-20 1935-06-25 Foster Machine Co Lap arrester for winding machines
US2084810A (en) * 1935-09-09 1937-06-22 Bibb Mfg Company Electrical stop motion for roving frames
FR952571A (fr) * 1946-09-05 1949-11-21 Zbrojovka Brno Np Bobineuse avec dispositif de coupage automatique du fil
FR1192766A (fr) * 1957-03-08 1959-10-28 Dispositif de mise à l'arrêt pour bobinoir
US3169716A (en) * 1958-06-11 1965-02-16 Reiners Walter Drum-wrap and thread-break lockout for winding machines
US3081046A (en) * 1960-05-19 1963-03-12 Leesona Corp Package control mechanism for winding machines
US3512690A (en) * 1967-10-27 1970-05-19 Leesona Corp Strand control apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030281A (en) * 1974-09-03 1977-06-21 Heberlein Hispano S.A. Surveying device
US4055936A (en) * 1975-05-16 1977-11-01 W. Schlafhorst & Co. Method for terminating a spinning operation
US4343144A (en) * 1980-02-28 1982-08-10 Rieter Machine Works Ltd. Control arrangement for a textile machine
US4677387A (en) * 1984-01-12 1987-06-30 Rieter Machine Works, Ltd. Package quality monitor
EP0979794A3 (en) * 1998-08-11 2000-11-02 Murata Kikai Kabushiki Kaisha Take-up winding device

Also Published As

Publication number Publication date
FR2015258A1 (enrdf_load_stackoverflow) 1970-04-24
DE1940272A1 (de) 1970-02-12
CH494832A (de) 1970-08-15
DE1940272B2 (de) 1977-06-02
GB1275974A (en) 1972-06-01

Similar Documents

Publication Publication Date Title
US3643883A (en) Lap-detecting stop motion
US5056734A (en) Automatic winder
US4244176A (en) Device for waxing a yarn
US4023341A (en) Device for detecting the breakage of yarn in drawing frames and spinning frames
US3438188A (en) Yarn defect detecting device
US3599886A (en) Automatic winder
US3940089A (en) Sewing machine thread control
US3734422A (en) Apparatus for monitoring yarn at winders
JP2002145527A (ja) 特に敏感な巻取り材料用の巻取機
JPH108359A (ja) 編機の糸供給装置
US4347990A (en) Method and apparatus for stopping packages in automatic winder
US3661334A (en) Device for reducing contact pressure of a bobbin contacting a drive drum of a thread winding arrangement
US4076181A (en) Precision winder for drawing and packaging synthetic fibers
US3358941A (en) Yarn remainder feeler
US3890810A (en) Apparatus for monitoring a thread or the like
GB983286A (en) Improvements in or relating to winding and reeling machines
US3044733A (en) Brake arrangement
US3763373A (en) Defect detector for a moving web
JPS60144279A (ja) 紡機の糸張力調整装置
US4672801A (en) Apparatus for producing two-component thread
US4343144A (en) Control arrangement for a textile machine
US3063229A (en) Stop motion for textile materials
JPS5931640Y2 (ja) 糸の逆巻き検出装置
US3938750A (en) Strand delay device
US2390669A (en) Cone winder guide