US3701247A - Automatic switch-off assembly for feed spools in textile machines - Google Patents

Automatic switch-off assembly for feed spools in textile machines Download PDF

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Publication number
US3701247A
US3701247A US142903A US3701247DA US3701247A US 3701247 A US3701247 A US 3701247A US 142903 A US142903 A US 142903A US 3701247D A US3701247D A US 3701247DA US 3701247 A US3701247 A US 3701247A
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US
United States
Prior art keywords
thread
holder
combination
guide
monitor
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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
Application number
US142903A
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English (en)
Inventor
Karl-Heinz Rehn
Klaus Detlef Otten
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.)
Oerlikon Barmag AG
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Barmag Barmer Maschinenfabrik AG
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Publication date
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Publication of US3701247A publication Critical patent/US3701247A/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
    • D01H13/1625—Electro-mechanical actuators
    • 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
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • 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

  • An automatic switch-off assembly in the operation of individual feed spools on textile machines essentially including a balloon thread guide connected to a holder on the machine frame in such a manner that the thread guide as a monitor or sensing element is urged to tilt against the normal tension exerted by the thread running thereagainst and as a guide element is also rotatable on said holder laterally away from the normal balloon thread path, both the tilting and rotat ing movements actuating a switch to its shut off position for at least the associated operating unit of the textile machine.
  • This invention generally relates to a switch-off device for use in combinationwith textile machines in the event of thread or yarn breakage or exhaustion of the supply spool, using ,an electrically operating switching device;
  • thread-monitoring systems for textile machines which include a housing having arranged therein an electrical switch which is connected toa rocker arm or thread sensing lever that contacts the thread to be monitored in such a way that, if the thread breaks, the rocker arm or lever pivots into another position, for example under its own weight or under spring pressure, and thereby actuates a switch to bring the machine station or unit affected to a standstill.
  • the travelling thread pulls a probe or sensing lever into its balanced working position against the pressure of a spring. If the thread breaks, the spring pulls the lever into the switch-off position. The electrical contact is closed by this movement of the lever and the machine or the particular unit affected is switched off.
  • the sensing lever is arranged in such a way that it can rotate freely about a pivot, being held in a vertical or substantially vertical position by the travelling thread.
  • the lever swings around laterally and actuates an electrical contact in its swivelled or swungout position.
  • One object of the present invention is to provide a thread monitoring assembly or device for textile machines which functions both as a thread monitoring means and also as a balloon thread guide in all of the various types of twisting machines, and which does not interfere with the changing of spools or bobbins.
  • the assembly in combination with the textile machine includes a thread monitor which is connected to a holder which in turn is adapted to be fixedly attached to a machine frame and preferably adjustable in its distance from the machine sothat it can be adapted to the required height of the thread balloon, the monitor thereby being adapted to act simultaneously as a balloon thread guide.
  • This monitor or thread guide is then urged to tilt against the effect of the thread tension, the monitor further being adapted to rotate laterally thereof and to cooperate with a built-in electrical switch which is brought into its closed or shut-off position both in the fully tilted and also in the fully rotated position of the thread guide or monitor.
  • the thread-monitoring device in the combination according to the invention enables the thread guide for the balloon to be brought during operation into the most favorable position for friction free completion of a winding operation and, when spools are being changed, it can be rotated or swung out to provide completely free access to the spindles and thus does not interfere with the spool changing operation.
  • the automatic stoppage of the machine or the particular unit when in the switch-off position i.e. after the thread guide has been rotated or'swung down or away, is'a safety measure against any accidental switching on of the machine unit before the spool changing operation has been completed.
  • the thread guide can be locked both in its working position in contact with the running thread, and also in its swung-out or laterally rotated position by any suitable locking means. This ensures that the thread guide cannot be in-v advertently rotated and/or tilted to the wrong position.
  • FIG. 1 is a partly schematic illustration of a first embodiment of the invention, for positioning the assembly as shown in side elevation below a horizontally arranged twisting spindle, the assembly being in its working position;
  • FIG. 1A is a cross-sectional view taken on line A-A of FlG.il to show the arrangement of certain elements in the holder of the assembly;
  • FIG. 2 taneously as a balloon thread guide positioned to FIG. 2 is the same embodiment as FIG. 1 but shown in its tilted position following thread breakage;
  • FIG. 3 illustrates another embodiment of the threadmonitoring arrangement for positioning above a horizontally arranged twisting spindle
  • FIG. 3A is a partly schematic and enlarged perspective view of certain elements extracted from the interior of the holder shown in FIG. 3; I 2
  • FIG. 4 illustrates a slightly modified embodiment including a suitable locking means for the thread-monitoring arrangement, with the holder positioned below a twisting spindle;
  • FIG. illustrates an embodiment similar to FIG. 4 but positioned above a twisting spindle.
  • FIG. 1 generally shows'a yarn or thread-monitoring device located below a typical thread balloon B which forms around aloaded twisting spindle (indicated in phantomlines) asthethread is rapidly withdrawn and twisted or otherwise processed.
  • the balloon thread guide 1 also acts as a thread sensing lever and has a looped wire thread guiding eyelet 2 at its upper and a switch actuating element 4 is arranged at the'lowe'r end of thelever 1 inside a housing or casing 18.
  • the thread guide 1 together with the switch actuating'element4 are capable of being tilted or pivoted about the axis or pivot pin 3 under the effect of gravity when a thread 25 breaks after being in contact with and travelling through the guide 2 as shown in FIG. 1.
  • the switch element 4 is provided on one side with a protruding cam 5 against which there bears or engages a switching tongue 6 of a microswitch 7.
  • a guide pin 8 is arranged on the switching element 4 perpendicularly of the pivot 3.
  • a forwardly curved cam member 10 is fixed to the flange 11 of a hollow pin 12 which in turn is connected to a stationary holder member 16 of the device by another pin 13 and is thereby prevented from rotating.
  • the holder 16 is preferably adjustably arranged for axial movement in the machine frame F, as indicated for example by the set screw and flange indicated by S in FIG. 2.
  • the flange of the hollow pin 12 acts in conjunction with a spring 17 fixed at one end to the flange 11 and at its other end to the rear wall or reentrant annular portion of the housing 18, as a retaining means for-the rotatable housing 18 which is closed by its cover 19.
  • a'slide or cammed surface 9 of the forwardly curved section 10 causesthe lever 1 to swing abouttheaxis 3 through the cammed contact with the guide pin 8.
  • the spring 17 makes a frictional contact between the rear wall of the housing 18 and the facing front wall of the forwardly projecting portion 14 of the holder 16, thus preventing unintentional rotation. If necessary, this effect can be further enhanced by a locking mechanism acting in both positions.
  • the tongue 6 of the microswitch is actuated by the thread guide 1 which is tilted or dropped down, i.e. the microswitch 7 is essentially actuated by the protruding cam orv finger 5' arranged on the switch actuating element 4, thus closing or opening the circuit, as the case may be, by which the particular working station or operating unit of the machine is effectively switched off.
  • FIG. 2 The position which is assumed in the event of threadbreakage is shown in FIG. 2.
  • the lever arm 1 of the thread guide has rotated about the pivot pin 3, thereby swing down or tilt under 'the'effect of gravity in the event of thread breakage, it is advantageously assisted by a spring 23 which loads the switch actuating element 4 against the normal thread tension of the running thread.
  • the switch actuating element 4 can only pivot or tilt together with the thread guide 21 when the pressure of the spring approaches zero, i.e. when the thread 25 breaks.
  • the thread guide 21 with its wire eyelet 22 is turned with switching element 4through an'angle' of l in comparison with the embodiment .shown in FIGS. 1 and 2.
  • the switch actuating element 4 has a guide pin 8 but in this case, on account of the oppositely directed rotating movement in comparison to the embodiment shown in FIG. 1, this pin 8 cooperates with a curved section which has an effective slide way 26 on the opposite side of the pin 8 in comparison to that of FIG. 1.
  • the mode of operation isexactly the same as that described earlier for the embodiment shown in FIG. 1.
  • the miscroswitch 7 is thus arrangedin exactly the same way as in the firstdescribed embodiment and is connected in such a way that the circuit is closed when the tongue 6 swings down,-
  • FIGS. 1 to 3 In order to-lock the thread guide .1 or 21 in its pivoted or tilted position, the embodiments shown in FIGS. 1 to 3 have a cammedpin or lug 20 which, when rotated through about its axis, locks the thread guide in its tilted out position.
  • FIGS.- 4 and 5 Show a different form of a locking mechanism.
  • a slide member 28 movable in slot 27 in the housing 18 or in the cover l9. can be displaced between the inside of the housing cover and the switching element 4 in such a way that the yarn guide or 21 cannot be tilted down into the working or operating position.
  • spring 23 instead of using spring 23 as shown in FIGS. 3 and 5, one can also insert simple magnetic means, e.g. a pair of opposed magnets, as indicated by the double-arrow 29 in FIG. 4. i
  • the invention affords very desirable advantages in the combination of the balloon thread guide and the thread monitor or sensing lever and also in the possibility of rotating or swivelling the guide -1 or 21 down or away during spool changing or create enough space of the unhindered, rapid completion of this operation.
  • the arrangement can also be used as a very effective switch for switching the individual twisting or winding unit on and off. By locking the yarn guide after it has been tilted or swung down, it is also possible to prevent the twisting or winding unit from being unintentionally switched on'again. In large multispindle twisting machines with many units placed closely together, the switch-off assembly of the invention has proven to be most effective.
  • an automatic electrical switch-off assembly in combination therewith which comprises:
  • a thread monitor acting simultaneously as aballoon thread guide positioned to receive said thread in running contact at the required height of the thread balloon during normal operation
  • a holder to which said thread monitor is pivotally connected so as to be urged in tilting relationship against the tension exerted by the running thread, said holder also including means to rotate said thread monitor about the holder axis laterally away from the axis of the thread balloon path;
  • electrical switching means arranged in said holder for actuation to its shut off position in response to movement of said thread monitor to its tilted position free of thread tension and also in response to movement of said thread monitor to its rotated position away from said balloon path.
  • locking means are included on said holder to releasably' said thread monitor is an elongated thread guide having a guide eyelet at the free end thereof and a switch actuating element at the other end thereof pivotally mounted on a pin fixed within a housing forming the outer front portion of said holder, said switch actuating element bearing a protruding cam member'adapted to cooperatively engage the tongue of a microswitch contained within said housing.
  • a cammed locking pin is arranged on the front cover portion of said housing for rotation on an axis parallel to the pivot axis of the thread guide and switch actuating element, said locking pin being rotatable between an open p'dsition and a closed locking position of the cam against said thread guide holding it in its tilted position.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US142903A 1970-05-16 1971-05-13 Automatic switch-off assembly for feed spools in textile machines Expired - Lifetime US3701247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702024122 DE2024122B2 (de) 1970-05-16 1970-05-16 Abstellvorrichtung fuer spinn- und zwirnmaschinen bei fadenbruch oder auslauf der vorlagespule

Publications (1)

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US3701247A true US3701247A (en) 1972-10-31

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US142903A Expired - Lifetime US3701247A (en) 1970-05-16 1971-05-13 Automatic switch-off assembly for feed spools in textile machines

Country Status (7)

Country Link
US (1) US3701247A (enrdf_load_stackoverflow)
JP (1) JPS5438221B1 (enrdf_load_stackoverflow)
CA (1) CA948501A (enrdf_load_stackoverflow)
CH (1) CH518231A (enrdf_load_stackoverflow)
DE (1) DE2024122B2 (enrdf_load_stackoverflow)
FR (1) FR2091676A5 (enrdf_load_stackoverflow)
GB (1) GB1349794A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844101A (en) * 1972-10-11 1974-10-29 Peyer S Thread monitor device for textile machinery
US3880001A (en) * 1974-03-25 1975-04-29 Du Pont Yarn tension or break monitoring apparatus
US3981134A (en) * 1974-07-11 1976-09-21 Palitex Project-Company G.M.B.H. Yarn guide eyelet and monitoring mechanism in a textile yarn processing machine
US4075445A (en) * 1975-04-15 1978-02-21 Evolution Sa Thread monitoring switch for textile machines having magnet biasing lever to prevent any annoying thread flutter
US4280322A (en) * 1978-07-27 1981-07-28 Palitex Project Company Gmbh Textile yarn processing machine with yarn break monitoring mechanism
US4494370A (en) * 1982-01-21 1985-01-22 Palitex Project-Company Gmbh Stop motion for textile machines
US5901542A (en) * 1997-03-12 1999-05-11 Zinser Textilmaschinen Gmbh Ring-spinning machine with spring-biased thread-guide eye
US6024005A (en) * 1997-09-09 2000-02-15 Murata Kikai Kabushiki Kaisha Formation stabilizing guide for braider
CN103741300A (zh) * 2013-12-05 2014-04-23 苏州瑞日纺织科技有限公司 纺织机械用探纱器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3929895A1 (de) * 1989-09-08 1991-03-21 Skf Textilmasch Komponenten Fadenbruchdetektor fuer spinn- und zwirnmaschinen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734334A (en) * 1956-02-14 Strand break detecting apparatus
US2957300A (en) * 1957-06-24 1960-10-25 Jr Agnew H Bahnson Apparatus for measuring the efficiency of textile machines
US2977663A (en) * 1958-09-02 1961-04-04 Deering Milliken Res Corp Yarn processing apparatus
US2984964A (en) * 1957-09-02 1961-05-23 Prince Smith & Stells Ltd Yarn supply means in textile twisting machines
US3132466A (en) * 1959-06-29 1964-05-12 Preisser Gunther Device for indicating thread breakage particularly in spinning machines
US3272048A (en) * 1963-08-10 1966-09-13 Newmark Ltd Louis Apparatus for the detection of broken yarn and the like on textile machines
US3438188A (en) * 1966-10-11 1969-04-15 Allied Chem Yarn defect detecting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734334A (en) * 1956-02-14 Strand break detecting apparatus
US2957300A (en) * 1957-06-24 1960-10-25 Jr Agnew H Bahnson Apparatus for measuring the efficiency of textile machines
US2984964A (en) * 1957-09-02 1961-05-23 Prince Smith & Stells Ltd Yarn supply means in textile twisting machines
US2977663A (en) * 1958-09-02 1961-04-04 Deering Milliken Res Corp Yarn processing apparatus
US3132466A (en) * 1959-06-29 1964-05-12 Preisser Gunther Device for indicating thread breakage particularly in spinning machines
US3272048A (en) * 1963-08-10 1966-09-13 Newmark Ltd Louis Apparatus for the detection of broken yarn and the like on textile machines
US3438188A (en) * 1966-10-11 1969-04-15 Allied Chem Yarn defect detecting device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844101A (en) * 1972-10-11 1974-10-29 Peyer S Thread monitor device for textile machinery
US3880001A (en) * 1974-03-25 1975-04-29 Du Pont Yarn tension or break monitoring apparatus
US3981134A (en) * 1974-07-11 1976-09-21 Palitex Project-Company G.M.B.H. Yarn guide eyelet and monitoring mechanism in a textile yarn processing machine
US4075445A (en) * 1975-04-15 1978-02-21 Evolution Sa Thread monitoring switch for textile machines having magnet biasing lever to prevent any annoying thread flutter
US4280322A (en) * 1978-07-27 1981-07-28 Palitex Project Company Gmbh Textile yarn processing machine with yarn break monitoring mechanism
US4494370A (en) * 1982-01-21 1985-01-22 Palitex Project-Company Gmbh Stop motion for textile machines
US5901542A (en) * 1997-03-12 1999-05-11 Zinser Textilmaschinen Gmbh Ring-spinning machine with spring-biased thread-guide eye
US6024005A (en) * 1997-09-09 2000-02-15 Murata Kikai Kabushiki Kaisha Formation stabilizing guide for braider
CN103741300A (zh) * 2013-12-05 2014-04-23 苏州瑞日纺织科技有限公司 纺织机械用探纱器

Also Published As

Publication number Publication date
JPS5438221B1 (enrdf_load_stackoverflow) 1979-11-20
GB1349794A (en) 1974-04-10
DE2024122A1 (de) 1971-12-02
CH518231A (de) 1972-01-31
CA948501A (en) 1974-06-04
DE2024122B2 (de) 1977-06-23
FR2091676A5 (enrdf_load_stackoverflow) 1972-01-14

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