EP0036066B1 - Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré - Google Patents

Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré Download PDF

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Publication number
EP0036066B1
EP0036066B1 EP81100410A EP81100410A EP0036066B1 EP 0036066 B1 EP0036066 B1 EP 0036066B1 EP 81100410 A EP81100410 A EP 81100410A EP 81100410 A EP81100410 A EP 81100410A EP 0036066 B1 EP0036066 B1 EP 0036066B1
Authority
EP
European Patent Office
Prior art keywords
sliver
clamp
fibre sliver
sliver clamp
clamping
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
Application number
EP81100410A
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German (de)
English (en)
Other versions
EP0036066A1 (fr
Inventor
Ludwig Schmitt
Georg Goldammer
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0036066A1 publication Critical patent/EP0036066A1/fr
Application granted granted Critical
Publication of EP0036066B1 publication Critical patent/EP0036066B1/fr
Expired 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

Definitions

  • the present invention relates to a device for interrupting the sliver supply in open-end spinning devices with a disintegration device and a delivery device which is assigned a sliver clamp which can be actuated by a thread monitor or a winding monitor when the delivery roller continues to run.
  • a further sliver clamp which can be actuated at the same time as the first sliver clamp, is arranged in front of the delivery device in the fiber transport direction at a distance which is at least as large as the average fiber stack length.
  • the further sliver clamp according to the invention prevents, after its response when a roll occurs, many fibers get into the delivery device despite the delivery roller continuing to run. Rather, the retention of the sliver by means of the further sliver clamp pulls the sliver apart between the two sliver clamps, so that a certain maximum winding thickness cannot be exceeded.
  • this further sliver clamp can be actuated either by a winding monitor or by a thread monitor or, if both monitors are provided, by the monitor which responded previously.
  • the distance according to the invention of this further sliver clamp in front of the clamping area of the delivery device is at least as large as the average length of the fiber stacks, so that despite the continuing delivery roller while the sliver is retained by the further sliver clamp, no fiber damage occurs. Rather, the fibers of the sliver are pulled apart without being destroyed.
  • the point at which the sliver is pulled apart should be arranged as close as possible to the nip point of the delivery device. This is achieved according to the invention in that the distance at which the further sliver clamp is arranged in front of the clamping point of the delivery device is one to two times the mean fiber stack length that is being spun.
  • the further sliver clamp can be addressed by a single control device.
  • the first sliver clamp is always appropriately addressed when the further sliver clamp is actuated, the two sliver clamps are advantageously connected to one another in terms of control. If, for example, the further sliver clamp is addressed in this way even if a thread break occurs, it keeps the sliver within reach of the operator, even if the sliver leaves the clamping point of the first sliver clamp for some reason, so that the necessary re-insertion of the sliver into the delivery device is facilitated.
  • the stationary part of this sliver clamp is essentially along the clamping path of the movable part of this sliver clamp adjustable.
  • a sliver guide designed as a loop catcher is expediently provided in front of the clamping point of the further sliver clamp.
  • This sliver guide thus ensures that the sliver is inserted correctly into this sliver clamp regardless of the current location of the delivery can and also prevents loops from being fed into the spinning element, which would lead to irregularities in the yarn or, more likely, a yarn break.
  • the sliver guide designed as a loop catcher is advantageously an integral part of this further sliver clamp.
  • the delivery device has a stationary delivery roller and a feed trough which is pressed elastically against this, as well as a first sliver clamp consisting of a clamping lever working together with the feed trough, the clamping lever pivoting the feed trough away from the delivery roller when the thread monitor responds
  • the clamping end of the clamping lever is designed as a winding monitor and acts in response to the moving part of the further sliver clamp.
  • the movable part of the further sliver clamp is rigidly connected to the clamping lever of the first sliver clamp.
  • the inside of the spinning rotor 3 is fed in a conventional manner with the aid of a delivery device 1 and a disintegration roller 2 to a fiber sliver 4 which is dissolved in individual fibers 40, where the individual fibers 40 enter the collecting trough and form a fiber ring 41.
  • the fiber ring 41 is bound in a known manner into the end of a thread 42, which is drawn off through a thread draw-off tube 30 by means of a pair of draw-off rollers (not shown) and wound up in a conventional manner on a bobbin (not shown).
  • the thread 42 is monitored on its way to the bobbin by a thread monitor 31.
  • the negative pressure required for spinning in the spinning rotor 3 is generated in a known and therefore not shown manner.
  • the delivery device 1 has a driven delivery roller 10 and a pressure roller 11 which is elastically supported on the latter, on the circumference of which a sensor 120 of a winding monitor 12 rests elastically and scans for the presence of windings 43 (see FIG. 2).
  • the opening roller 2 and the delivery device 1 are arranged in a housing 20 which further accommodates a sliver clamp 5 assigned to the delivery device 1.
  • the sliver clamp 5 is located in front of the clamping area 13 of the delivery device 1 and has a movable clamping element 50, via which the sliver 4 is fed to the delivery device and which can cooperate with the housing wall 200 opposite it with respect to the sliver path.
  • the clamping element 50 is pivotally mounted on its end facing away from the delivery device 1 and rests on the plunger 510 of an electromagnet 51 which forms the armature and which is excited when the thread monitor 31 responds.
  • the winding monitor 12 is arranged in the control circuit 310 of the electromagnet 51.
  • Parallel to the electromagnet 51 is another electromagnet 52, which controls a further sliver clamp 6 with its plunger 520 forming the armature, which is arranged at a distance from the first sliver clamp 5.
  • the further sliver clamp 6 consists of a pivotable clamping lever 60, which rests on the plunger 520, and a stationary stop 61, against which the clamping lever 60 can be brought into contact.
  • the stop 61 is connected to the housing 20 via an intermediate piece 610.
  • the intermediate piece has an opening designed as a sliver guide and loop catcher 611.
  • the sliver 4 After passing the sliver clamp 6, the sliver 4 passes through the sliver clamp 5 to the delivery device 1, which feeds the sliver 4 to the opening roller 2.
  • the opening roller 2 dissolves the sliver 4 into individual fibers 40, which reach the spinning rotor 3 via the feed channel 21, where they are deposited in the form of a fiber ring 41 and where they are spun into the end of a thread 42 in the take-off and are drawn off by this .
  • the one in the trigger located thread 42 is monitored by the thread monitor 31. If a thread break occurs, the thread monitor 31 closes the control circuit 310 and actuates the two electromagnets 51 and 52.
  • the electromagnet 51 pivots the clamping element 50 against the fiber sliver 4, which is thus held between the clamping element 50 and the housing wall 200 forming a stop is while the delivery roller 10 continues.
  • the electromagnet 51 pivots the clamping element 50 against the fiber sliver 4, which is thus held between the clamping element 50 and the housing wall 200 forming a stop is while the delivery roller 10 continues.
  • the delivery device 1 pulls the fiber ribbon held back by the fiber ribbon clamp 6 apart without fiber damage occurring. After the winding 43 has been removed, the sensor 120 returns to its working position, so that to insert the sliver 4 into the delivery device 1, it is sufficient to temporarily bring the sensor 311 into its scanning position by hand, as a result of which both sliver clamps 5 and 6 the sliver 4 release until after restoring the normal spinning tension the sensor 311 is held in its scanning position by the thread 42 anyway.
  • the clamping element 50 and the clamping lever 60 can be assigned tension springs which hold the clamping element 50 and the clamping lever 60 in contact with the plunger 510 or 520 assigned to them.
  • the distance between the sliver clamp 6 and the clamping point 13 of the delivery device must on the one hand be so large that fiber damage is avoided, which is why the mean fiber stack length is selected as the minimum size for this distance.
  • the mean fiber stack length is selected as the minimum size for this distance.
  • only as little fiber sliver 4 as possible should be drawn into the delivery device 1 after the winding monitor 12 has responded, in order to keep a roll 43 that has already occurred as small as possible, so that damage to the delivery device 1 is avoided and the removal of the Wikxcfs 43 9 hny difficulties can be.
  • Such a risk of damage to the delivery device 1 varies in size depending on its design. If the fiber is fed with the help of straps, for example, it is particularly important to interrupt the delivery of fibers quickly, since the straps are particularly sensitive to damage.
  • both the thread monitor 31 and the winding monitor 12 are connected in parallel with one another and in series with the electromagnets 51 and 52 connected in parallel with one another, so that both when the thread monitor 31 responds and when the winding monitor is activated address both the first sliver clamp 5 and the second sliver clamp 6.
  • the first and second sliver clamps 5 and 6 are thus connected to one another in terms of tax.
  • the fiber feeding into the spinning rotor 3 is reliably prevented in the event of a thread break, while pulling apart of the fiber sliver 4 is ensured in the event of winding formation, and thus exceeding a maximum winding thickness is prevented.
  • FIG. 2 A device in which the fiber damage to the first sliver clamp 5 is avoided in a simpler manner is shown in FIG. 2.
  • the delivery device 1 shown here has a delivery roller 10 and a feed trough 14 which resiliently supports it.
  • a clamping lever 53 can be brought into contact, which has a sliver guide funnel 54, so that the sliver 4 can pass between the feed trough 14 and the clamping end 530 of the clamping lever 53 to the delivery roller 10.
  • the drive end 531 of the clamping lever 53 designed as a two-armed lever rests on the plunger 520 of the electromagnet 52.
  • a clamping lever 62 which cooperates with the stop 61, is rigidly connected to the clamping lever 53.
  • the electromagnet 52 When a thread break occurs, the electromagnet 52 is actuated by the thread monitor 31 (FIG. 1). The plunger 520 of the electromagnet 52 now pivots the clamping lever 53, the clamping end 530 of which moves towards the feeder de 14 moves and lifts it off the delivery roller 10 and thereby clamps the sliver 4 between itself and the feed trough 14. Thus, on the one hand, the clamping between delivery roller 10 and feed trough 14 is released and, on the other hand, this sliver clamp 5 retains the sliver 4 by clamping between the clamping end 530 of the clamping lever 52 and feed trough 14, so that - without fiber damage - the delivery of further individual fibers 40 into the spinning rotor 3 is prevented .
  • the clamping lever 62 of the sliver clamp 6 is rigidly connected to the clamping lever 53 - so that the sliver clamps 5 and 6 are in turn connected to one another for control purposes - the clamping lever 62 additionally secures the sliver 4 by clamping between itself and the stop 61.
  • the Kiemmhebei 53 is designed in the embodiment shown in Fig. 2 as a winding monitor, so that an additional sensor 120 (Fig. 1) is not required. If desired, the clamping lever 53 can also be provided with a wiper or can be assigned to it. If a roll 43 occurs on the delivery roller 10, it will abut the clamping end 530 of the clamping lever 53 directly or via a scraper, so that the clamping lever 53 pivots, the feed trough 14 is lifted from the delivery roller 10 and the sliver 4 between the clamping end 530 of the Clamping lever 53 and the feed trough 4 is clamped.
  • the fiber sliver 4 is additionally clamped in the fiber sliver clamp 6, so that the fiber sliver 4 is pulled apart between the two fiber sliver clamps 5 and 6 when the delivery roller 10 continues to pull the sliver 43 via the winding 4 exercises.
  • a clamping lever 53 not designed as a bobbin winder can also be used under certain circumstances. If, however, the clamping lever 53 also serves as a winding monitor, the sliver clamps 5 and 6 are actuated either from the thread monitor 31 or from the clamping lever 53, depending on which one responds earlier.
  • the stationary part of the sliver clamp 6 is formed with the stop 61 with a link-like holder 63, the elongated holes 64 of which adjust the stop 61 along the clamping path of the moving part, ie of the clamping lever 62.
  • Such an adjustment option is particularly expedient if the two sliver clamps 5 and 6 are mechanically connected to one another in order to allow the sliver clamp 6 to be adapted to the sliver clamp 5.
  • FIG. 3 shows the device shown in FIG. 2 without cover 22 in its three working positions.
  • the spinning end is uninterrupted, the thread 42 is continuously withdrawn from the spinning station, and the sliver 4 is fed continuously.
  • a winding 43 (FIG. 2) has occurred at the spinning station II, so that the fiber sliver 4 has been pulled apart as a result of the response of the fiber sliver clamp 6.
  • a thread break has occurred at this spinning station II, which usually occurs at the same time as the beginning of the winding formation, but at the latest when the sliver supply is interrupted.
  • Fig. 4 shows an alternative solution, in which the sliver clamp 6 has a two-armed clamping lever 65, one arm 650 of which is held by a tension spring 66 in contact with the drive end 531 of the clamping lever 53, while the other arm 651 when the electromagnet 52 is excited with the interposition of the clamping lever 53 is brought to bear against the cover 22 serving as a stop.
  • the arm 651 of the clamping lever 65 has a guide hole 652 for guiding the sliver 4.
  • both sliver positions 5 and 6 reach their clamping position by responding to the electromagnet 52 or when a coil 43 is felt by the clamping lever 53 designed as a winding monitor.
  • the fiber guide forming a loop catcher 611 is an integral part of the sliver clamp 6.
  • FIG. 4 shows that it is entirely possible to form a loop catcher 67 independently of the sliver clamp 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (8)

1. Dispositif pour interrompre l'alimentation en rubans de fibres dans des machines de filature à fibres libérées, comportant un dispositif détacheur ainsi qu'un dispositif délivreur auquel est associée une pince de ruban de fibres qui peut être actionnée, lorsque le cylindre délivreur continue de tourner, par un casse-fil ou par un élément de surveillance de la formation de nappes, dispositif caractérisé par le fait que, avant le dispositif délivreur (1) par rapport au sens de transport des fibres, et à une distance qui est au moins égale à la longueur moyenne des fibres discontinues, se trouve une seconde pince (6) de ruban de fibres qui peut être actionnée en même temps que la première pince (5) de ruban de fibres.
2. Dispositif selon la revendication 1, caractérisé par le fait que la distance à laquelle l'autre pince (6) de ruban de fibres est située devant la zone de pincement (13) du dispositif délivreur (1) mesure du simple au double de la longueur moyenne des fibres discontinues à filer.
3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que l'autre pince (6) de ruban de fibres est en liaison de commande avec la première pince (5) de ruban de fibres.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que la partie stationnaire (61) de l'autre pince (6) de ruban de fibres est pour l'essentiel réglable le long du trajet de pincement de la partie mobile (62) de cette pince.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait qu'il est prévu devant la zone de pincement de l'autre pince (6) de ruban de fibres un organe de guidage des ruban de fibres réalisé sous la forme d'un organe (611, 67) de capture de boucles.
6. Dispositif selon la revendication 5, caractérisé par le fait que l'organe de guidage des ruban de fibres réalisé sous la forme d'un organe (611) de capture de boucles fait partie intégrante de cette autre pince (6) de ruban de fibres.
7. Dispositif selon l'une des revendications 1 à 6, comportant un dispositif délivreur qui comprend un cylindre délivreur stationnaire et une cuvette d'alimentation pressée élastiquement contre ce dernier, ainsi qu'une première pince de ruban de fibres consistant en un levier de coincement qui coopère avec la cuvette d'alimentation, ce levier de coincement faisant pivoter la cuvette d'alimentation à l'écart du cylindre délivreur lorsque le casse-fil réagit, dispositif caractérisé par le fait que l'extrémité de coincement (530) du levier de coincement (53) est réalisée sous la forme d'un organe de surveillance de la formation de nappes et agit, lorsqu'elle est sollicitée, sur la partie mobile (52, 65) de l'autre pince (6) de ruban de fibres.
8. Dispositif selon la revendication 7, caractérisé par le fait que la partie mobile (62) de l'autre pince (6) de ruban de fibres est assujettie au levier de coincement (53) de la première pince (5) de ruban de fibres.
EP81100410A 1980-03-18 1981-01-21 Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré Expired EP0036066B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3010303 1980-03-18
DE3010303A DE3010303C2 (de) 1980-03-18 1980-03-18 Vorrichtung zum Unterbrechen der Faserbandzufuhr bei Offenend-Spinneinheiten

Publications (2)

Publication Number Publication Date
EP0036066A1 EP0036066A1 (fr) 1981-09-23
EP0036066B1 true EP0036066B1 (fr) 1983-07-20

Family

ID=6097512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100410A Expired EP0036066B1 (fr) 1980-03-18 1981-01-21 Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré

Country Status (6)

Country Link
US (1) US4379386A (fr)
EP (1) EP0036066B1 (fr)
BR (1) BR8101456A (fr)
CS (1) CS171181A2 (fr)
DE (2) DE3010303C2 (fr)
IN (1) IN154112B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151676U (ja) * 1982-04-07 1983-10-11 株式会社豊田自動織機製作所 オ−プンエンド精紡機用スライバガイド
DE3425345A1 (de) * 1984-07-10 1986-01-30 Trützschler GmbH & Co KG, 4050 Mönchengladbach Verfahren und vorrichtung zum erzeugen einer gleichmaessigen, kontinuierlichen fasermenge
DE3606609A1 (de) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh Luntenstopp-vorrichtung am streckwerk einer spinnmaschine
US4739540A (en) * 1986-12-08 1988-04-26 Celanese Fibers, Inc. Methods and apparatus for preventing filaments from lapping a roll
DE3744207A1 (de) * 1987-12-24 1989-07-06 Rieter Ag Maschf Spinnmaschine mit einer vielzahl von spinnstellen
DE4038214A1 (de) * 1990-11-30 1992-06-04 Schlafhorst & Co W Bandzufuehrung an textilmaschinen mit faserbandverarbeitung
EP0527355B1 (fr) * 1991-08-10 1998-04-01 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour l'introduction pneumatique d'une mèche de fibres dans un métier à filer
JPH0931774A (ja) * 1995-07-19 1997-02-04 Zellweger Luwa Ag 繊維物質中の質量変動を防ぐための方法及び装置
DE102005014685A1 (de) * 2005-03-29 2006-10-05 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren und Vorrichtung zur Faserbandzuführung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957014B (de) * 1969-11-13 1972-12-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und Vorrichtung zum Unterbrechen der Faserbandzufuhr bei Offen-End-Spinnmaschinen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957014A1 (de) * 1969-11-13 1971-06-03 Schubert & Salzer Maschinen Verfahren und Vorrichtung zum Unterbrechen der Faserbandzufuhr Offen-End-Spinnmaschinen
FR2234398B2 (fr) * 1973-06-20 1976-10-15 Schubert & Salzer Maschinen
CS195385B1 (en) * 1974-06-18 1980-01-31 Milos Vecera Device for supplying fibre strands such as slivers to fibre separating mechanisms
DE2438168A1 (de) * 1974-08-08 1976-02-19 Fritz Stahlecker Offenend-spinnmaschine mit einer verfahrbaren wartungseinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957014B (de) * 1969-11-13 1972-12-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und Vorrichtung zum Unterbrechen der Faserbandzufuhr bei Offen-End-Spinnmaschinen

Also Published As

Publication number Publication date
DE3010303A1 (de) 1981-09-24
EP0036066A1 (fr) 1981-09-23
DE3010303C2 (de) 1983-11-17
DE3160610D1 (en) 1983-08-25
IN154112B (fr) 1984-09-22
BR8101456A (pt) 1981-09-22
US4379386A (en) 1983-04-12
CS171181A2 (en) 1984-06-18

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