EP0276470B1 - Vorrichtung zur Überwachung des Garnvorrates auf Garnspulen - Google Patents

Vorrichtung zur Überwachung des Garnvorrates auf Garnspulen Download PDF

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Publication number
EP0276470B1
EP0276470B1 EP87119073A EP87119073A EP0276470B1 EP 0276470 B1 EP0276470 B1 EP 0276470B1 EP 87119073 A EP87119073 A EP 87119073A EP 87119073 A EP87119073 A EP 87119073A EP 0276470 B1 EP0276470 B1 EP 0276470B1
Authority
EP
European Patent Office
Prior art keywords
arm
bobbin
yarn
switch
probe
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
EP87119073A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0276470A1 (de
Inventor
Siegfried Nürk
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.)
Sipra Patententwicklungs und Beteiligungs GmbH
Original Assignee
Sipra Patententwicklungs und Beteiligungs GmbH
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 Sipra Patententwicklungs und Beteiligungs GmbH filed Critical Sipra Patententwicklungs und Beteiligungs GmbH
Publication of EP0276470A1 publication Critical patent/EP0276470A1/de
Application granted granted Critical
Publication of EP0276470B1 publication Critical patent/EP0276470B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/086—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to completion of unwinding of a package
    • 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 invention relates to a device for monitoring the yarn supply on a yarn spool, from which the yarn is drawn off overhead, with a button resiliently resting against yarn turns on the side facing away from the yarn take-off side.
  • Yarn processing textile machines must be switched off when the yarn supply of a bobbin is exhausted and the beginning of this bobbin is not already connected to the end of the yarn in a new, full bobbin.
  • Coil carriers with work coils and reserve coils are bulky and cannot be used everywhere.
  • the transfer to the reserve spool is an additional source of interference in the case of poorly wound spools.
  • the bobbin are provided in their end region facing away from the yarn take-off side of the yarn bobbin with at least one opening, through which the button of a switching device rests against the innermost yarn winding layer and carries out a switching movement as soon as the yarn of the last yarn winding layer has been pulled off at the touch point .
  • These devices have the disadvantage that they require specially designed yarn bobbins with openings for the buttons and that the yarn bobbin and the switching device must always fit together.
  • a monitoring device in which a pushbutton which is immersed in an edge slot of a tubular yarn bobbin and is pivotably mounted outside the bobbin bears against a smaller initial bobbin set apart from the main bobbin and pretensioned on the side facing away from the yarn take-off side Side is applied to the winding body.
  • the invention has for its object to provide a monitoring device of the type mentioned in such a way that it is effective regardless of the different dimensions of the numerous different types of bobbins and the position of the bobbins on these bobbins and the nature of the yarn stored on the bobbin and the Surface quality of the bobbin also have no influence.
  • the object is achieved with a monitoring device of the type mentioned in the present invention in that the button rests against the end face of the yarn package and additionally on the winding surface of the package spool and is movable along the winding surface.
  • the push button rests on a face of the yarn wrap, where it either bears against the last yarn winding layer or is already released when the penultimate or third-last yarn winding layer is broken down and a switching movement can run along the thread winding surface of the thread spool.
  • the bobbin does not have to have a window for the button or a special surface condition.
  • the button can be articulated on a spring-loaded switch arm that can be locked in a starting position and can also be supported on a support arm that can be placed against the winding surface of the bobbin at the end of the bobbin.
  • the support arm adapts to the thickness or a center-to-center distance of a thread spool when a thread spool is attached and thereby moves the push-button as well.
  • the device can thus be used on bobbins with differently sized bobbins and with different thicknesses of the generally tubular bobbins, whereby it is ensured that the button always comes to rest against the end face of the bobbin.
  • the switching arm can advantageously be designed as a swivel arm, at the free end of which the button, which is also designed as a swivel arm and ends in a free probe tip, is articulated, the probe tip of which rests on the pivotable support arm in the locking position of the switch arm.
  • the push button can be assigned a relatively long switching path in a space-saving arrangement before an electrical switch influenced by the switching arm responds.
  • the monitoring device designed according to the invention also takes into account the fact that commercially available thread spools are not only present in different dimensions of their thread spools, but also have different distances from the end of the thread spool from the end of the thread spool, which is expediently used in a device designed according to the invention to release the locked button .
  • the switching arm can, according to the invention, engage in its initial position with a spring-loaded locking lever, which can have a release arm which can be acted upon by the end of the spool body on the plug-in side.
  • the switching arm in its locked starting position, the support point of the support arm and the release arm of the locking lever can be seen at the same height as a thread spool carrier in the plugging direction of a yarn spool.
  • the monitoring device is only activated when the end of the spool body is pressed against the release arm of the locking lever, the support arm lying at the same level sliding onto the outer surface of the spool body before after a sufficient Adjustment of the release arm of the locking lever, the switching arm is unlocked with the button and the button comes to bear against the end of the thread winding unit. If the bobbin is removed again, the device automatically returns to its locked position and starting position.
  • the switching arm can advantageously be equipped with a permanent magnet which is in its maximum pivoting position in the region of an electrical, magnetically influenceable switching element, for example a reed contact accommodated in the housing or a Hall generator.
  • the device can be easily attached to any conventional spool holder, for which purpose the device housing, which provides the device parts with extensive dust protection, can have a receiving opening or a clamping attachment or the like for fastening, in particular for fastening to a plug-on mandrel.
  • the figures each show a bobbin holding rod 10 of a creel for a knitting or knitting machine, which in the present case is shown in a horizontal position, but which can also have a conventional inclined position or can be a vertical bobbin mandrel.
  • the cuboid housing 11 of the monitoring device is plugged onto the coil holding rod 10 and fastened by means of a clamping screw 13.
  • the housing 11 is provided with a suitable through-channel or an attached holding eye.
  • a wall of the housing 11 of the monitoring device 12 has been removed in order to make its inner parts visible.
  • a switching arm 16 which can be pivoted about an axis 14 and is biased by means of a tension spring 15 and which carries a rod-shaped permanent magnet 17 on its rear side in its central region.
  • a locking lever 19 which can be pivoted about an axis 18 and which has a release arm 19.1 located in the region of a housing opening 20 engages at the front end of the switching arm 16.
  • a button 22 designed as a pivot lever is mounted at a bearing point 21.
  • the button 22 is parallel to a support arm 23 located behind it in the drawing, and the button tip 22.1 is supported in the area of the support point 23.1 of this support arm 23 in the locking position of the monitoring device shown in FIG. 1.
  • the support arm 23 is pivotally mounted about an axis 24 and has an elongated counter arm 23.2 which, according to FIG. 1, carries a stop 25 for the switching arm 16.
  • the switching arm 16, the locking lever 19, the button 22 and the support arm 23 are therefore all in parallel planes, in the top level the switching arm 16 and the locking lever 19, in the next level the button 22 and in the third level the support arm 23, which is under the pretension of a tension spring 26 acting on its counter arm 23.2.
  • the tension spring 26 gives the support arm 23 a torque which is greater than the opposite torque exerted by the spring 15 on the switching arm 16.
  • the locking lever 19 is under the action of a compression spring 27.
  • the button 22 is under the pretension of a compression spring 31 anchored on the switching arm 16. Its pivoting range is limited by a stop lug 22.2 (FIG. 1).
  • the switching arm 16 interacts with a reed contact switch 28 which is arranged within the housing 11 and is connected via lines 29 to a lateral electrical connection socket 30.
  • Fig. 1 shows the monitoring device 12 in its locked position, in which the switching arm 16 at its front end directly or via the button 22 coupled to it by the locking lever 19 and at its rear end by the stop 25 of the counter arm 23.2 of the support arm 23 is held in an initial position in which the button 22 is retracted into the opening 20 of the housing 11 and is supported at the support point 23.1 with the button tip 22.1 on the support arm 23.
  • the release arm 19.1 of the locking lever 19 and the support point 23.1 of the support arm 23 are located in the opening 20 of the housing 11 at the same height.
  • the monitoring device is ineffective. It can remain in this position even when the bobbin is attached but the bobbin is not pressed on.
  • Fig. 1 shows the monitoring device 12 in its locked position, in which the switching arm 16 at its front end directly or via the button 22 coupled to it by the locking lever 19 and at its rear end by the stop 25 of the counter arm 23.2 of the support arm 23 is held in an initial position in which the button 22 is retracted into the opening 20 of
  • a dashed lines provided with a yarn package 33 cylindrical yarn bobbin 34 is drawn, which is pushed onto the bobbin holding rod 10 as a reserve bobbin only to such an extent that the bobbin edge 34.1 bears against the head of the support arm 23 forming an inclined sliding surface.
  • the monitoring device is only activated when the end 34.1 of the bobbin 34 is pressed against the head of the support arm 23 and further against the release arm 19.1 of the locking lever 19, as can be seen from FIG. 2.
  • Fig. 2 shows a conical yarn bobbin 32 pushed onto the bobbin holding rod 10 with a conical yarn bobbin 34 ', the foot edge 34.1' of which is pushed into the housing window 20 until the support lever 23 is pivoted against the force of the spring 26 by sliding its head clockwise and its support point 23.1 rests on the free end area of its outer winding surface 35.
  • the locking lever 19 is also pivoted clockwise by the stop of the bobbin edge 34.1 ⁇ against its release arm 19.1 and thus the switching arm 16 is released.
  • the switch arm 16 By releasing the switch arm 16 under the action of the tension spring 15 swiveled clockwise until the button 22 coupled to it rests with its button tip 22.1 against the end face 33a of the yarn package 33 of the yarn package 32.
  • the probe tip 22.1 is held under the action of the compression spring 31 against the winding surface 35 of the coil former 34 ⁇ .
  • the yarn 36 forming the yarn package 33 is drawn off from the fixed yarn package 32 over the head of the yarn package, ie over the other end face 33b of the yarn package 33.
  • both the locking lever 19 and the support arm 23 are released.
  • the counter arm 23.2 of the support arm 23 is pivoted back in a counterclockwise direction by the tension spring 26 and takes the switching lever 16 with its stop 25 against the force of the tension spring 15 until the locking position shown in FIG. 1 is reached, in which the front end of the switching arm 16 or the button 22 articulated there snap into place on the released locking lever 19.
  • the control circuit to which the switch 28 is connected can have any suitable structure.
  • the button tip 22.1 of the button 22 can protrude more or less from the winding surface 35 of the bobbin, so that it bears against the second to last or third to last yarn winding layer and is already released when these yarn winding layers are broken down.
  • the device housing 11 may be provided with an indicator lamp, not shown. However, a common display panel can also be provided for all yarn package monitoring points in a textile machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)
EP87119073A 1987-01-24 1987-12-22 Vorrichtung zur Überwachung des Garnvorrates auf Garnspulen Expired - Lifetime EP0276470B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873702049 DE3702049A1 (de) 1987-01-24 1987-01-24 Vorrichtung zur ueberwachung des garnvorrates auf garnspulen
DE3702049 1987-01-24

Publications (2)

Publication Number Publication Date
EP0276470A1 EP0276470A1 (de) 1988-08-03
EP0276470B1 true EP0276470B1 (de) 1991-05-15

Family

ID=6319453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87119073A Expired - Lifetime EP0276470B1 (de) 1987-01-24 1987-12-22 Vorrichtung zur Überwachung des Garnvorrates auf Garnspulen

Country Status (6)

Country Link
US (1) US4827090A (enExample)
EP (1) EP0276470B1 (enExample)
JP (1) JPS63196468A (enExample)
DD (1) DD279865A5 (enExample)
DE (1) DE3702049A1 (enExample)
ES (1) ES2022290B3 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010469A1 (de) * 1990-03-31 1991-10-02 Schlafhorst & Co W Verfahren und einrichtung zum ueberwachen der paraffinierung eines laufenden fadens
JPH058944A (ja) * 1991-06-29 1993-01-19 Murata Mach Ltd 自動ワインダーの管糸供給システム
CH685635A5 (de) * 1992-06-17 1995-08-31 Zellweger Uster Ag Anordnung zur Kontrolle des Vorhandenseins von Fäden einer aufgespannten Fadenschicht an einer Textilmaschine.
JP4863294B2 (ja) * 2007-05-30 2012-01-25 株式会社イノアックコーポレーション 自動車用ダクト

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507078A (en) * 1948-04-23 1950-05-09 Wright Melvin Switch for cable operated machinery
BE489683A (enExample) * 1948-07-31
BE493935A (enExample) * 1949-03-31
CH418920A (de) * 1964-06-29 1966-08-15 Schweiter Ag Maschf Fadenrestfühler an einer automatischen Spulmaschine
IT1206646B (it) * 1978-10-25 1989-04-27 Ib Int Brevetti Dispositivo per rivelare una condizione di prossimo esaurimento del filato su una bobina e provocare come conseguenza l'arresto automatico della macchina in macchine circolari da maglieria, calzetteria e tessili in genere.
FR2530603A1 (fr) * 1982-07-20 1984-01-27 Asa Sa Nouveau type de bobine de fil et procede pour son obtention

Also Published As

Publication number Publication date
DD279865A5 (de) 1990-06-20
DE3702049C2 (enExample) 1989-03-16
DE3702049A1 (de) 1988-08-04
JPS63196468A (ja) 1988-08-15
ES2022290B3 (es) 1991-12-01
EP0276470A1 (de) 1988-08-03
US4827090A (en) 1989-05-02

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