EP0351304A1 - Vorrichtung zum Anhalten der Lieferung eines an einer Spinnmaschine angeordneten Streckwerks bei Abwesenheit des Fadens am Streckwerkausgang - Google Patents

Vorrichtung zum Anhalten der Lieferung eines an einer Spinnmaschine angeordneten Streckwerks bei Abwesenheit des Fadens am Streckwerkausgang Download PDF

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Publication number
EP0351304A1
EP0351304A1 EP89401984A EP89401984A EP0351304A1 EP 0351304 A1 EP0351304 A1 EP 0351304A1 EP 89401984 A EP89401984 A EP 89401984A EP 89401984 A EP89401984 A EP 89401984A EP 0351304 A1 EP0351304 A1 EP 0351304A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
declutching
wire
food
control member
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.)
Granted
Application number
EP89401984A
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English (en)
French (fr)
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EP0351304B1 (de
Inventor
Henri Genevray
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.)
N Schlumberger SAS
Original Assignee
N Schlumberger SAS
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Filing date
Publication date
Application filed by N Schlumberger SAS filed Critical N Schlumberger SAS
Publication of EP0351304A1 publication Critical patent/EP0351304A1/de
Application granted granted Critical
Publication of EP0351304B1 publication Critical patent/EP0351304B1/de
Anticipated expiration legal-status Critical
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
    • D01H13/18—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 stopping supply only
    • D01H13/182—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 stopping supply only by raising or lifting of one of the drafting cylinders, e.g. by removing of the loading means

Definitions

  • the present invention relates to textile systems for drawing a continuous spinning yarn, and it relates more precisely to a device making it possible to stop the supply of wicking when, at the outlet of the continuous spinning yarn, is no longer present. , which can result either from a breakage of the output wire, or from a winding of the wire, or even from the winding of the wick itself on a cylinder.
  • the wick In continuous spinning, the wick is brought by food cylinders, it passes through a control and drawing station which transforms it into a wire, then the wire is wound at the outlet.
  • a control and drawing station which transforms it into a wire
  • the wire is wound at the outlet.
  • the material can reach such a thickness and / or such a hardness that this cylinder can come out of its bearings or be seriously damaged by deformation or breakage, which obviously causes considerable damage to the machine.
  • Document DE-A-3,042,946 discloses a system in which one of the food cylinders is separated from the other food cylinder simply by an electrical device with a core, controlled by a wire detector, this first cylinder moving only along a straight path of spacing and approximation relative to the second cylinder.
  • the object of the invention is to remedy these drawbacks by providing a simple, reliable and inexpensive device which makes it possible to stop feeding a drawing system for a continuous spinning machine when there is no output wire.
  • the device according to the invention to be used in a continuous spinning comprising food drive cylinders for the entry of the wick, a control and drawing station of the wick to transform the latter into a thread.
  • a wire winding outlet station means for detecting the presence of the wire, between the control and drawing station and the wire winding outlet station, means sensitive to said detector means to stop the feeding of wicks by the food cylinders when an absence of wire is detected at the outlet, one of the food cylinders being mounted on a disengageable movable assembly to separate the food cylinders from each other under the action of said means to stop the wick feed, is characterized in that the movable assembly is returned to its active engaged position and to its disengaged inactive position to stop wick feed by an elastic mechanism of the type beyond the neutral point which, for the active engaged position, pressurizes the food cylinder against the other food cylinder.
  • the detector means can be constituted by an optical detector, in particular with a photoelectric cell, or by a mechanical detector, in particular a wire breaker.
  • the inlet food cylinders are constituted by a driving cylinder and an idler cylinder in pressure contact with the driving cylinder, the idler cylinder being mounted on the disengageable movable element to separate the food cylinders. one of the other under the action of said means to stop feeding wick.
  • the moving element can carry a declutching element capable of cooperating with a declutching control member and with at least one retaining member keeping it normally out of cooperation with the declutching control member and arranged to disappear in the event of for detecting the absence of an output wire so as to cause the declutching element to cooperate with the declutching control member.
  • the declutching element is constituted by an arm having a notch and the declutching control member is constituted by a rotating shaft carrying at least one tooth for cooperation with said notch in the direction of disengagement of the moving element.
  • the retaining member can be constituted by at least one retractable rod under the control of the detector means.
  • the declutching element is brought to cooperate with the declutching control member or with the retaining member by a return action, for example by gravity or by spring.
  • the declutching control member is arranged to act on the declutching element, also in the declutching position of the movable assembly, to move it away from the return path of the retaining member towards its active position. of restraint.
  • FIG. 1 With reference to FIG. 1, there is shown a system for drawing a continuous spinning machine by means of which a wick 1 is drawn to give a wire 2 as an output which is recovered in a winding output station 3.
  • the stretching system comprises an entry station constituted by two food cylinders 4,5, and a station 6 for controlling and drawing the wick 1 comprising, for example successively pairs of cylinders 7, a pair of sleeves 8 and a pair of stretching cylinders 9.
  • the detector means 10 can be of any suitable nature, for example optical, in particular of the photoelectric cell type, or mechanical, in particular of the wire breaker type.
  • the device according to the invention is arranged to control the stopping of the wicking supply only of the stretching system at the outlet from which an absence of thread has been detected, the other stretching systems of the continuous spinning remaining active .
  • all the food cylinders 4 are driven continuously, while the associated cylinder 5 is crazy and is in pressure contact with its driving cylinder 4 to ensure the drive of the wick by friction.
  • the convinced food cylinder 5 is mounted, on each side, on a frame 12 with respect to which it can rotate about a transverse axis.
  • the frame 12 is part of a movable composite assembly 11 and it is carried by a fixed support 13 with respect to which it can tilt in a limited manner around a joint 14 whose transverse axis is located slightly upstream of the axis of cylinder 5 and substantially at the same height.
  • the frame 12 is resiliently biased towards its disengaged position (Fig. 3), for which the idler cylinder 5 is out of cooperation with the driving cylinder by a spring 30, for example a torsion spring, acting between the frame 12 and the support 13.
  • the spring 30 is designed to exert a torque just sufficient to spread the cylinder 5 of the cylinder 4 when the assembly constituted by the frame 12 and the cylinder 5 is only subjected to its own weight.
  • the frame 12 is brought and maintained in its active engaged position of FIG. 2 by a lever 15 cooperating with the frame 12 unilaterally by coming to bear, for example on an abutment surface 31 of the frame.
  • the lever 15 can tilt in a limited manner around a transverse articulation 17 carried by the support 13 and the axis of which is situated slightly above and upstream of the axis of the articulation 14.
  • the lever 15 is integral d 'A plate 16, so that the assembly formed by the lever 15 and the plate 16 can switch between the two extreme positions shown in Figs.
  • the assembly constituted by the lever 15 and the plate 16 is subjected to the bilateral action of a mechanism of the protruding type elastically urging this assembly, and in particular the lever 15, on either side of a neutral mean angular position represented by the dashed line 34 in Figs. 1 to 3.
  • This neutral point overshoot mechanism shown schematically by a tension spring 35 hooked at a fixed point 36 of the mean line 34 and at a point 37 of the plate 16, exerts sufficient torque to largely overcome the torque of reminder towards the disengaged position exerted by the spring 30 on the frame 12.
  • the point 37 is chosen so that it passes from one side to the other of the mean line 34 when the lever 15 is tilted between its two extreme positions.
  • the idler cylinder 5 is applied under pressure against the cylinder 4 because, on the frame 12, the torque exerted by the lever 15 due to the spring 35 outweighs the resistant torque exerted by the spring 30.
  • the control of the tilting of the lever 15 and of the plate 16 around the fixed articulation 17 is carried out by hand in the direction of the clutch, that is to say to bring the cylinder 5 into pressure pressure against the cylinder 4, and automatically in the declutching direction, that is to say for the spacing of the cylinder 5 relative to the cylinder 4, when an absence of output wire is indicated by the detector 10.
  • the movable element 11 comprises an arm 18 which, at its upper end, is articulated on the plate 16 around an articulation 19 of transverse axis, and this arm 18 cooperates with retaining and actuating means which, according to the detection carried out by the detector 10, leave the lever 15 and the cylinder 5 in the active engaged position of FIG. 2 or on the contrary cause the disengagement to the position of FIG. 3.
  • the lower part of the declutching element constituted by the arm 18 enters a housing 38 which comprises, on the one hand, a declutching control member 20 and, on the other hand, at least one retaining member 21 which maintains normally the arm 18 out of cooperation with the member 20 as long as an absence of wire is not detected at the output.
  • the declutching control member 20 is for example constituted by a shaft which extends over the entire width of the continuous, continuously rotating, and which carries at least one tooth 26 capable of cooperating with a notch 25 formed on the arm 18 at one end of a notch 24.
  • the retaining member 21 is for example constituted by two transverse rods which can be retracted under the control of a suitable device 22 controlled by the detector 10, as shown by the line of action in phantom 23.
  • the arm 18 is permanently biased towards the shaft 20 and the rods 21 either by gravity or, as shown, for example by a torsion spring 39 mounted on the articulation 19 and acting between the plate 16 and the arm 18.
  • the geometry of the arm 18, the shaft 20 and the rods 21 is studied so that, when the rods 21 are in the retaining position (Fig. 2), the notch 25 of the arm 18 bearing against the rods 21 is located at the neighborhood of the shaft 20 but out of action of the teeth 26 and that, when the rods 21 are retracted by the device 22 as a result of the detection of an absence of wire at the outlet, the arm 18, under the action of the return spring 39, press against the shaft 20, as shown in phantom in FIG. 2.
  • the arm 18 cooperates with the shaft 20
  • the continuous rotation of the latter causes one of the teeth to cooperate with the notch 25, which pulls the arm 28 downwards and causes the plate 16 to tilt together with the lever 15 around the articulation 17 against the action of the spring 35.
  • the cylinder 5 is out of cooperation with the engine cylinder 4, which interrupts the wick supply although this cylinder 4 continues to rotate.
  • the detection and / or declutching means for example the device 22 for controlling the rods 21, are arranged to be active again only after a certain time following the restarting of the system, which can be done either by a separate command or by a time delay.
  • the invention is not limited to the embodiment, nor to the mode of application, which have been described; on the contrary, we could conceive of various variants without departing from its framework; thus, for example, one could modify the mechanical means causing the lifting of the cylinder 5 or the means causing the disengagement under the control of the detector means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP89401984A 1988-07-12 1989-07-11 Vorrichtung zum Anhalten der Lieferung eines an einer Spinnmaschine angeordneten Streckwerks bei Abwesenheit des Fadens am Streckwerkausgang Expired - Lifetime EP0351304B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8809462A FR2634229B1 (fr) 1988-07-12 1988-07-12 Dispositif pour arreter l'alimentation d'un systeme d'etirage d'un continu a filer en cas d'absence de fil en sortie
FR8809462 1988-07-12

Publications (2)

Publication Number Publication Date
EP0351304A1 true EP0351304A1 (de) 1990-01-17
EP0351304B1 EP0351304B1 (de) 1992-06-24

Family

ID=9368362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401984A Expired - Lifetime EP0351304B1 (de) 1988-07-12 1989-07-11 Vorrichtung zum Anhalten der Lieferung eines an einer Spinnmaschine angeordneten Streckwerks bei Abwesenheit des Fadens am Streckwerkausgang

Country Status (5)

Country Link
US (1) US4951454A (de)
EP (1) EP0351304B1 (de)
DE (1) DE68901897T2 (de)
ES (1) ES2033108T3 (de)
FR (1) FR2634229B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515088C (de) * 1928-08-01 1931-08-21 Emil Stutz Benz Vorrichtung zum Unterbrechen der Zufuehrung des Arbeitsgutes fuer Spinn-, Zwirn- undaehnliche Textilmaschinen
BE769257A (en) * 1971-06-29 1971-11-03 Sauvage Joseph M J Automatic spindle stop mechanism - for twisting fancy yarns actuated by missing or broken yarn
DE3042946A1 (de) * 1980-11-14 1982-07-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Spinnanlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1374417A (en) * 1919-05-07 1921-04-12 George M Arragg Stop-motion
US2019673A (en) * 1933-06-21 1935-11-05 Fairbairn Lawson Combe Barbour Rove stop mechanism
US2421555A (en) * 1945-03-05 1947-06-03 Douglas Fraser & Sons Ltd Stop motion for spinning and like textile frames
US2599256A (en) * 1950-05-19 1952-06-03 Courtaulds Ltd Yarn twisting machine
US3019587A (en) * 1959-04-08 1962-02-06 Allgauer Maschb G M B H Automatic knock-off device for textile spinning machines
DE2952533A1 (de) * 1979-12-28 1981-07-02 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Spinnmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515088C (de) * 1928-08-01 1931-08-21 Emil Stutz Benz Vorrichtung zum Unterbrechen der Zufuehrung des Arbeitsgutes fuer Spinn-, Zwirn- undaehnliche Textilmaschinen
BE769257A (en) * 1971-06-29 1971-11-03 Sauvage Joseph M J Automatic spindle stop mechanism - for twisting fancy yarns actuated by missing or broken yarn
DE3042946A1 (de) * 1980-11-14 1982-07-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Spinnanlage

Also Published As

Publication number Publication date
FR2634229A1 (fr) 1990-01-19
DE68901897T2 (de) 1993-01-14
DE68901897D1 (de) 1992-07-30
ES2033108T3 (es) 1993-03-01
US4951454A (en) 1990-08-28
EP0351304B1 (de) 1992-06-24
FR2634229B1 (fr) 1991-08-16

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