EP0866015A2 - Vorrichtung zum Feststellen der Reinheit von Textilfäden - Google Patents

Vorrichtung zum Feststellen der Reinheit von Textilfäden Download PDF

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Publication number
EP0866015A2
EP0866015A2 EP98101282A EP98101282A EP0866015A2 EP 0866015 A2 EP0866015 A2 EP 0866015A2 EP 98101282 A EP98101282 A EP 98101282A EP 98101282 A EP98101282 A EP 98101282A EP 0866015 A2 EP0866015 A2 EP 0866015A2
Authority
EP
European Patent Office
Prior art keywords
bush
textile
electric circuit
switch
textile yarn
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.)
Withdrawn
Application number
EP98101282A
Other languages
English (en)
French (fr)
Other versions
EP0866015A3 (de
Inventor
Carmelo Angelo Cortese
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0866015A2 publication Critical patent/EP0866015A2/de
Publication of EP0866015A3 publication Critical patent/EP0866015A3/de
Withdrawn legal-status Critical Current

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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
    • B65H63/02—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
    • B65H63/032—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 electrical or pneumatic
    • B65H63/0321—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 electrical or pneumatic using electronic 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
    • B65H63/032—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 electrical or pneumatic
    • B65H63/0321—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 electrical or pneumatic using electronic actuators
    • B65H63/0324—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 electrical or pneumatic using electronic actuators using photo-electric sensing means, i.e. the defect signal is a variation of light energy
    • 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 present invention relates to a unit for detecting the integrity of textile yarns.
  • the present invention relates to a unit which can be advantageously used in a spiral covering machine provided with a plurality of spiral covering devices, in which a spiral covering textile yarn is wound spirally around a conducting yarn to produce a spirally covered textile yarn.
  • Detection of the integrity of textile yarns in a spiral covering machine is usually performed by one or more operators who, at substantially uniform time intervals, monitor the machine, visually checking whether the textile yarns are damaged, in which case they interrupt the operation of the spiral covering device in which the anomaly has occurred and restore the normal operating conditions.
  • the monitoring operations are not only relatively time-consuming but also scarcely effective to the point that detection of the anomalies of the textile yarns is untimely and highly demanding.
  • the aim of the present invention is to provide a unit for detecting the integrity of textile yarns which allows to detect the integrity of the textile yarns simply, reliably and promptly.
  • a unit for detecting the integrity of textile yarns which is characterized in that it includes a means for controlling the textile yarns which in turn includes an electric circuit provided with a normally-closed switch; the switch includes a fixed contact and a movable armature formed by a bush which is coupled by friction to the textile yarns and is spaced from the fixed contact when, during use, the textile yarns are continuous and are moving.
  • the above defined unit can be installed in a spiral covering machine which includes a feeder means for feeding a conducting textile yarn along a preset path and a winding means arranged along the path in order to spirally wind a spirally covering textile yarn on the conducting textile yarn so as to form a spirally covered textile yarn.
  • a spiral covering machine which includes a feeder means for feeding a conducting textile yarn along a preset path and a winding means arranged along the path in order to spirally wind a spirally covering textile yarn on the conducting textile yarn so as to form a spirally covered textile yarn.
  • the numeral 1 generally designates a unit for detecting the integrity of the textile yarns 2 and 3, which can be installed preferably, but not necessarily, on a spiral covering machine, which is shown schematically in FIG. 13 and generally designated by the reference numeral 4.
  • the spiral covering machine includes a frame, formed by at least two mutually superimposed horizontal bearings 5 and 6 and a plurality of spiral covering devices 7a (only two of which are shown) which in turn include a respective feeder 7 for feeding a conducting textile yarn 2 along a preset path P which passes through the bearings 5 and 6 transversely thereto.
  • the machine also includes a respective winding device 8 which is supported by the bearings 5 and 6 for spirally winding a spiral covering textile yarn 3 on the corresponding conducting textile yarn 2 so as to form a respective spiral covered textile yarn 9.
  • each winding device 8 includes at least one rotating spindle 10 for supporting a respective reel 11 of textile yarn 3 and a vertical tube 12 which is supported, along the path P and in vertical alignment with the corresponding spindle 10, by the bearing 5 or by the bearing 6, depending on whether the spindle 10 is supported by the bearing 6 or respectively by the bearing 5, and has a through hole 13 which forms part of the path P.
  • Each feeder 7 is suitable to feed the corresponding textile yarn 2 through the hole 13 of the corresponding tube 12 and through the corresponding spindle 10, and includes two motorized rollers 14, which are common to the feeders 7 and are arranged below the bearings 5 and 6. Rollers 14 are suitable to rotate a respective reel 15 of textile yarn 2 to unwind the textile yarn 2.
  • a respective guiding and tensioning roller 16 for the textile yarn 2 which is arranged between the rollers 14 and the bearings 5 and 6 and is connected to rollers 14 by means of a transmission of a per se known type and which is not shown in the drawings, and by means of a takeup roller (of a per se known type which is not shown in the drawings), suitable to rotate a respective takeup reel 17 for winding the spiral covered textile yarn 9 on the reel 17.
  • unit 1 includes, for each feeder 7 and 8, a respective control device 18, which is suitable to check the integrity of the corresponding textile yarn 3 and is supported, in a per se known manner by the frame above the corresponding spindle 10.
  • Control device 18 includes a tubular supporting rod 19, which is connected to the frame and extends substantially toward the outside of the machine 4, and a contoured plate 20.
  • the plate 20 is mounted on a free end of the rod 19 and is formed by an inner portion 21, which is coupled to the rod 19 and has a triangular tooth 22, and by an outer end portion 23, which is lower than the portion 21 in order to form the tooth 22 and has two through holes 24 and 25; the hole 24 has a larger diameter than the hole 25 and is arranged centrally to the portion 23, while the hole 25 is arranged substantially to the side of the tooth 22.
  • Control device 18 also includes an electric circuit 26 which in turn includes an electric power source 26, a signaling device 28 which is connected to the source 27 by means of an electric cable 29, which is arranged inside the tubular rod 19, and a switch 30, which is normally closed, is seriesconnected to the device 28, and is connected to the source 27 by means of a respective electric cable 31 which is arranged inside the rod 19.
  • an electric circuit 26 which in turn includes an electric power source 26, a signaling device 28 which is connected to the source 27 by means of an electric cable 29, which is arranged inside the tubular rod 19, and a switch 30, which is normally closed, is seriesconnected to the device 28, and is connected to the source 27 by means of a respective electric cable 31 which is arranged inside the rod 19.
  • device 28 includes a lamp 28a, which is mounted in the hole 25, and an emitter 28b of signals which can be received by means of a controller (which is per se known and not shown in the drawings) located proximate to a monitoring point occupied by the operators, while the switch 30 includes a fixed contact formed by two semi-annular conducting plates 32 and 33 which are mounted separately from each other on an upper surface 34 of the portion 23 around the hole 25 and are respectively connected to the device 28 and to the source 27, and a bush 35, which forms a movable armature of the switch 30, is preferably but not necessarily made of a conducting material, and is slidingly mounted inside the hole 24.
  • a controller which is per se known and not shown in the drawings
  • Bush 35 has a central contoured hole 36, which is formed by two frustum-shaped surfaces 37 and 38 arranged so that their respective shorter edges are in contact with each other and is suitable to be slidingly engaged by the yarns 2 and 3.
  • Bush 35 also has an upper collar 39, which prevents the downward extraction of the bush 35 from the hole 25 and is usually arranged in contact with the plates 32 and 33 to close the circuit 26.
  • the collar is made of a conducting material.
  • Collar 39 finally has a triangular recess 40 which is engaged by the tooth 22 to prevent rotation of the bush 35 inside the hole 25 during the operation of the winding device 8.
  • the bush 35 has an elastic ring 41 which is mounted on the outside of the bush 35 and of the hole 25 on the opposite side of the plate 20 with respect to the collar 39 and is suitable to limit an upward sliding of the bush 35 caused by the friction between the bush 35 and the textile yarns 2 and 3.
  • the textile yarn 3 forms a so-called “balloon”, whose centrifugal force applies to the bush 35 an upward thrust which causes the bush 35 to "float” inside the hole 25 and lifts the collar 39 from the plates 32 and 33 to open the electric circuit 26, which if the textile yarn 3 breaks is thus closed again, consequently activating the device 28, that is to say, emitting a fault signal by virtue of the emitter 28b and lighting the lamp 28.
  • Device 18 includes a return pulley 42 which is vertically supported above the bush 35 by a respective arm 43 which is mounted along the rod 19, has a respective groove 44 which is suitable to be engaged by the textile yarn 9, and is suitable to align the textile yarn 9 with the hole 13 of the tube 12 if the tube 12 is mounted on the bearing 5 above the spindle 10 or, if the spindle 10 is mounted on the bearing 6 above the tube 12, with a thread guide (of a known type which is not shown) which is a part of the machine 4 and is suitable to distribute the textile yarn 9 on the takeup reel 17 according to a preset distribution criterion.
  • the unit 1 also includes an additional control device 45 which is substantially similar to the control device 18, from which the device 45 differs first of all in that it is suitable to check the integrity of the textile yarn 2 alone and for this reason is mounted along the path P below the spindle 10 rigidly with the spindle 10, and secondly in that the bush 35 is replaced by a cylinder 46, which is made of dielectric material, is movably supported inside the corresponding hole 25 by a rocker 47, and has a conducting ring 48 which is mounted at its upper end and is normally arranged in contact with the plates 32 and 33.
  • a cylinder 46 which is made of dielectric material
  • Control device 45 includes a supporting bracket 49 which has two jaws 50 which form, between them, a central hole 51 and are clamped onto a lower tubular portion 52 of the spindle 10 which extends below the bearing 8, 9 and a supporting arm 53 for the device 28, in particular for the lamp 28a which protrudes from one of the jaws 50 parallel to the jaw 50 and has the hole 25 at its free end.
  • device 45 includes a rocker 47, which in turn includes a fork 54 formed by a central cross-member 55 and by two arms 56 which are arranged transversely to the cross-member 55 and are connected by virtue of respective pivots 57 laterally to the jaws 50 and are mounted so that they can rotate with respect to the jaws 50, and an additional arm 58 which is formed by a plate which is rigidly coupled to the cross-member 55 and supports a pulley 59 at its lower end, and the cylinder 46 at its upper end, which is folded at 90° with respect to a plane of arrangement of the plate.
  • a rocker 47 which in turn includes a fork 54 formed by a central cross-member 55 and by two arms 56 which are arranged transversely to the cross-member 55 and are connected by virtue of respective pivots 57 laterally to the jaws 50 and are mounted so that they can rotate with respect to the jaws 50, and an additional arm 58 which is formed by a plate which is rigidly coupled to the cross-member 55 and supports a pulley
  • the pulley 59 is suitable to oscillate about the pivots 57 under the action of a textile yarn 2, which engages a groove 60 of the pulley 59, and has an elasticity which lifts the conducting ring 48 off the plates 32 and 33 and opens the circuit 26.
  • unit 1 includes a control device 61 which is suitable to check the integrity of the textile yarn 2 alone and is substantially similar to the control device 45.
  • Control device 61 is mounted on the machine 4 as an alternative to the device 45 if the spindle 10 is arranged above the corresponding tube 12.
  • the device 61 differs from the device 45 first of all in that it is mounted along the path P below the tube 12 rigidly with the tube 12 and secondly in that the rocker 47 is formed by a contoured plate which includes a lateral portion 62 which is pivoted by virtue of a pivot 63 which passes through the bracket 49 on the opposite side of the arm 53 with respect to the hole 51, an additional lateral portion 64 which is folded at 90° with respect to the plane of arrangement of the contoured plate, and supports the cylinder 46, and a portion 65 which is intermediate between the portions 62 and 64 and supports the pulley 59, the groove 60 of which is usually aligned with the hole 13 of the tube 12 during use.
  • each spiral covering device 7a the conducting textile yarn 2 is unwound from the respective reel 15, is wound around the pulley 16 and, according to the position of the spindles 10 with respect to the tubes 12, is partially wound around the pulley 59 of the device 45, passed through the hole 51, through the spindle 10, through the contoured hole 36 of the bush 35 of the device 18, through the hole 13 and finally is partially wound around the reel 17; otherwise, after being wound around the pulley 16, it is partially wound around the pulley 59 of the device 61, passed through the hole 13, through the spindle 10, through the contoured hole 36 of the bush 35 of the device 18 and is finally partially wound around the reel 17.
  • the textile yarn 3 is joined in a per se known manner to the textile yarn 2 at the bush 35.
  • the feeders 7 and 8 are actuated and, after a brief transient, the textile yarn 2 reaches a set tension value which raises the conducting rings 48 off the plates 32 and 33 through the rockers 47 of the devices 45 and 61 so as to open corresponding electric circuits 26.
  • the rapid rotation of the spindles 10 causes the corresponding textile yarns 3 to form, between the corresponding reels 11 and the corresponding bushes 35, the so-called "balloon", whose centrifugal force, together with the friction between the textile yarn 3 and the surfaces 38 of the corresponding holes 36, is such as to raise the bushes 35 and separate the collars 39 from the plates 32 and 33, consequently opening the circuits 26.
  • the control devices 18, 45 and 61 have, on the electric circuit 26, a switch 30 which is constituted by a bush, again designated by the reference numeral 35 for the sake of clarity, which is freely coupled to the textile yarns 2 and 3 as shown above, and a photoelectric cell 70 which is suitable to detect the position of the bush 35.
  • Photoelectric cell 70 is constituted, in a per se known manner, by a light beam emitter 71 and by a receiver 72 which are arranged in diametrically opposite positions with respect to the hole 24 in which the bush 35 is arranged so that it can slide axially on a supporting plate 66.
  • the bush 35 can move between a lowered position, in which the elastic ring 67, associated with a groove formed in an upward region in the bush 35, is arranged in abutment against the upper surface of the plate 66, and a position which is raised by virtue of the upward thrust applied, during use, by the continuous and moving textile yarns 2 and 3 until the lower collar 39 of the bush 35 abuts against the lower surface of the plate 66.
  • the photoelectric cell 70 is suitable to detect the presence of the bush 35 in the raised position, in which the bush 35 blocks the light beam emitted by the photoelectric cell 70. If the textile yarn 2, 3 being monitored breaks and the thrust ceases, the bush 35 moves by gravity into the lowered position, allowing activation of the photoelectric cell 70, which actuates the closure of the electric circuit 26.
  • the bush 35 can be made entirely of dielectric material.
  • the ring 67 associated with the bush 35 forms a fork 67a which is suitable to engage a tooth 22 which protrudes vertically from the plate 66 to prevent the rotation of the bush 35.
  • the same function can of course be provided by a different kind of means for guiding the bush 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP98101282A 1997-01-28 1998-01-26 Vorrichtung zum Feststellen der Reinheit von Textilfäden Withdrawn EP0866015A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO970061 IT1291476B1 (it) 1997-01-28 1997-01-28 Unita' per la rilevazione dell'integrita' di fili tessili.
ITTO970061 1997-01-28

Publications (2)

Publication Number Publication Date
EP0866015A2 true EP0866015A2 (de) 1998-09-23
EP0866015A3 EP0866015A3 (de) 1999-04-21

Family

ID=11415272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101282A Withdrawn EP0866015A3 (de) 1997-01-28 1998-01-26 Vorrichtung zum Feststellen der Reinheit von Textilfäden

Country Status (2)

Country Link
EP (1) EP0866015A3 (de)
IT (1) IT1291476B1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB682720A (en) * 1949-08-12 1952-11-12 American Viscose Corp Method and apparatus for stopping strand handling machines
DE2621196A1 (de) * 1976-05-13 1977-12-01 Karl H Ing Grad Kessler Fadenbruch-meldeeinrichtung
FR2539765B1 (fr) * 1983-01-20 1985-09-20 Asa Sa Machine pour le cablage de fils et plus particulierement de fils de verre
JPS63154589A (ja) * 1986-12-15 1988-06-27 Nippon Seren Kk 糸切れ検出装置
IT1248647B (it) * 1990-05-28 1995-01-26 Roy Electrotex Spa Strumento per eseguire la misura della tensione meccanica di fili, in particolare di fili di trama nell'alimentazione di telai di tessitura,ed alimentatore di trama equipaggiato con detto strumento di misura

Also Published As

Publication number Publication date
ITTO970061A1 (it) 1998-07-28
EP0866015A3 (de) 1999-04-21
IT1291476B1 (it) 1999-01-11

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