EP0114568B1 - Device for clamping a roving - Google Patents

Device for clamping a roving Download PDF

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Publication number
EP0114568B1
EP0114568B1 EP19830810558 EP83810558A EP0114568B1 EP 0114568 B1 EP0114568 B1 EP 0114568B1 EP 19830810558 EP19830810558 EP 19830810558 EP 83810558 A EP83810558 A EP 83810558A EP 0114568 B1 EP0114568 B1 EP 0114568B1
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EP
European Patent Office
Prior art keywords
sliver
stop device
clamping
magnetic
clamping means
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
EP19830810558
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German (de)
French (fr)
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EP0114568A1 (en
Inventor
Eduard Marthaler
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.)
Loepfe AG Gebrueder
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Loepfe AG Gebrueder
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Publication of EP0114568A1 publication Critical patent/EP0114568A1/en
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Expired legal-status Critical Current

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    • 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 invention relates to a luten stop device on spinning machines for interrupting the sliver transport in the event of thread breakage.
  • a sliver stop device which has become known has a stop segment which has the shape of a slotted hollow cylinder and is placed on a corrugated area of an inlet-side stretching roller and is held by the corrugated part thereof.
  • a lever system which engages in the stop segment is connected to a thread sensor arranged on the output side of the drafting system and is controlled by it.
  • the stop segment on the drafting roller is released and taken along by the incoming sliver until the stop segment is jammed between the counter roller and the drafting roller and the sliver passing through is held and thus severed.
  • Another known sliver stop device has a sliver guide tube in which the sliver is guided in an opening transversely to its longitudinal axis.
  • a coaxial, displaceable stamp in the sliver guide tube, the actuating movement of which is controlled by a photoelectric thread monitor.
  • the match stop device is installed on the intake side of the drafting system.
  • the main disadvantage of the first device is that it cannot be mounted on drafting devices of different devices or brands.
  • the mass of the stop segment must be matched very precisely to the intended corrugated shaft. Above all, these are the inside diameter in the area of the corrugated cylinder, the collar mass on both sides of the corrugated cylinder, the length between the collars and the wedge angle of the stop segment, which is necessary for the functional retraction of the same.
  • the second embodiment of a sliver stop device also requires a great deal of space, which is generally not available in the area of the drafting system.
  • the sheared clamping of the fuse in the match stop device leads to lint formation between the match guide tube and the coaxial stamp sliding therein, which worsens the effect of the match stop device. Since the fuse should be inserted through an opening in the fuse guide tube, inserting the fuse requires a lot of time and skill.
  • the aim of the invention is to create an easy-to-use, very little space-consuming and not pollution-prone match stop device which can be attached to drafting systems of various types of construction without extensive adaptation work.
  • the sliver stop device can have the features of claims 2 to 12.
  • a coil with an iron core 5 is arranged on one of the legs and a clamping element is arranged at a distance therefrom.
  • this clamping member can be a pivotable clamping arm 2.
  • a first magnetic rod 3 sits parallel to the coil with the iron core 5 in the clamping arm 2.
  • the other leg of the frame 1 has a second magnetic rod 4 approximately opposite the joint of the clamping arm 2, which projects somewhat into the pivoting range of the clamping arm 2.
  • the clamping arm 2 In the open position of the match stop device, the clamping arm 2 is attracted to the coil with an iron core.
  • the fuse 8 slides along the other leg over the second magnetic rods 4.
  • the coil with iron core 5 receives current and the magnetic field that builds up repels the first magnetic rod 3 mounted on the clamping arm 2. This reaches the area of attraction of the second magnetic bars 4 and is pulled against the second magnetic bar 4 projecting into the pivoting area of the clamping arm 2.
  • the fuse between these two magnetic bars 3 and 4 is clamped and their further transport is prevented.
  • the clamping arm 2 is reset by hand by the operator who is already manipulating the fuse or by an electrical or electromechanical reset device.
  • FIG. 2 In another embodiment (FIG. 2) of a sliver stop device, a slide element 2 ′ guided in a slot is used instead of a clamping arm 2 as a carrier for the first magnetic rod 3.
  • the magnetic rod 3 In the open position, the magnetic rod 3 is also back from the coil Iron core 5 tightened and held. If the thread breaks, the bobbin with iron core 5 receives current again and repels the first magnetic rod 3.
  • the fuse 8 is clamped by the attraction of the second magnetic bars 4.
  • the reset can be done by hand or by a reset device 6, e.g. B. a spring.
  • the forces of attraction and repulsion can be metered very precisely. It is also possible to control the closing force as a function of pressure by providing a support for the clamping elements with a pressure sensor and regulating the closing force via a control device.
  • the clamping elements which are formed by the first and second magnetic rods 3 and 4 in the first and second embodiment, can also carry cams or other elevations or a profile that enables a partially positive clamping, so that the clamping forces can be kept small. This can be particularly advantageous for certain materials.
  • this sliver stop device lies in the easily accessible and free sliver path and in the very simple manufacture of the device. In some variants, the good and controllable clamping force is also essential.

Description

Die Erfindung bezieht sich auf eine Lutenstopvorrichtung an Spinnmaschinen zum Unterbrechen des Luntentransportes bei Fadenbruch.The invention relates to a luten stop device on spinning machines for interrupting the sliver transport in the event of thread breakage.

Eine bekanntgewordene Luntenstopvorrichtung weist ein Stopsegment auf, welches die Form eines geschlitzten Hohlzylinders hat und auf je einen geriffelten Bereich einer einlaufseitigen Streckwalze gesteckt und vom Riffelteil dieser gehalten wird. Ein Hebelsystem, das in das Stopsegment eingreift, steht mit einem ausgangsseitig des Streckwerkes angeordneten Fadenfühler in Verbindung und wird von diesem gesteuert.A sliver stop device which has become known has a stop segment which has the shape of a slotted hollow cylinder and is placed on a corrugated area of an inlet-side stretching roller and is held by the corrugated part thereof. A lever system which engages in the stop segment is connected to a thread sensor arranged on the output side of the drafting system and is controlled by it.

Bei Fadenbruch ausgangsseitig des Streckwerkes wird das Stopsegment auf der Streckwalze ausgeklinkt und von der einlaufenden Lunte mitgenommen, bis sich das Stopsegment zwischen der Gegenwalze und der Streckwalze verklemmt und die zwischen diesen durchlaufende Lunte festgehalten und so durchtrennt wird.If the thread breaks on the output side of the drafting system, the stop segment on the drafting roller is released and taken along by the incoming sliver until the stop segment is jammed between the counter roller and the drafting roller and the sliver passing through is held and thus severed.

Eine andere bekanntgewordene Luntenstopvorrichtung weist ein Luntenführungsrohr auf, in dem die Lunte quer zu dessen Längsachse in einer Oeffnung geführt ist. Im Luntenführungsrohr befindet sich ein koaxialer, verschiebbarer Stempel, dessen Stellbewegung von einem fotoelektrischen Fadenwächter gesteuert wird.Another known sliver stop device has a sliver guide tube in which the sliver is guided in an opening transversely to its longitudinal axis. There is a coaxial, displaceable stamp in the sliver guide tube, the actuating movement of which is controlled by a photoelectric thread monitor.

Reisst der gesponnene Faden, wird der Stempel im Luntenführungsrohr verschoben und die Lunte abgeschert. Die Luntenstopvorrichtung wird einlaufseitig auf dem Streckwerk montiert.If the spun thread breaks, the stamp is moved in the sliver guide tube and the fuse is sheared off. The match stop device is installed on the intake side of the drafting system.

Bei der ersten Vorrichtung ist der wesentlichste Nachteil, dass sie nicht auf Streckwerke verschiedener Geräte bzw. Fabrikate montiert werden kann. Die Masse des Stopsegmentes müssen sehr genau auf die vorgesehene Riffelwelle abgestimmt sein. Vor allem sind dies der Innendurchmesser im Bereich des Riffelzylinders, die Bundmasse beidseits des Riffelzylinders, die Länge zwischen den Bunden und der Keilwinkel des Stopsegmentes, welcher für einen funktionsgerechten Einzug desselben erforderlich ist.The main disadvantage of the first device is that it cannot be mounted on drafting devices of different devices or brands. The mass of the stop segment must be matched very precisely to the intended corrugated shaft. Above all, these are the inside diameter in the area of the corrugated cylinder, the collar mass on both sides of the corrugated cylinder, the length between the collars and the wedge angle of the stop segment, which is necessary for the functional retraction of the same.

Ausserdem sind grossvolumige Steuergeräte und Hebelsysteme, auch bei der Verwendung elektronischer Sensoren, erforderlich.In addition, large-volume control units and lever systems are required, even when using electronic sensors.

Auch die, zweite Ausführungsform einer Luntenstopvorrichtung benötigt sehr viel Raum, der im Bereich des Streckwerkes im allgemeinen nicht zur Verfügung steht.The second embodiment of a sliver stop device also requires a great deal of space, which is generally not available in the area of the drafting system.

Durch die scherende Klemmung der Lunte in der Luntenstopvorrichtung kommt es zu Fusselbildung zwischen dem Luntenführungsrohr und dem in diesem gleitenden koaxialen Stempel, was die Wirkung der Luntenstopvorrichtung verschlechtert. Da die Lunte durch eine Oeffnung im Luntenführungsrohr eingeführt werden muss, erfordert das Einlegen der Lunte relativ viel Zeit und Geschicklichkeit.The sheared clamping of the fuse in the match stop device leads to lint formation between the match guide tube and the coaxial stamp sliding therein, which worsens the effect of the match stop device. Since the fuse should be inserted through an opening in the fuse guide tube, inserting the fuse requires a lot of time and skill.

Ziel der Erfindung ist die Schaffung einer bedienungsfreundlichen, sehr wenig Platz beanspruchenden und nicht verschmutzungsgefährdeten Luntenstopvorrichtung, welche an Streckwerke verschiedener Konstruktionsarten ohne umfangreiche Adaptionsarbeiten angebaut werden kann.The aim of the invention is to create an easy-to-use, very little space-consuming and not pollution-prone match stop device which can be attached to drafting systems of various types of construction without extensive adaptation work.

' Dieses Ziel lässt sich erfindungsgemäss mit den Merkmalen nach dem kennzeichnenden Teil des Anspruchs 1 erreichen. Ausserdem kann die Luntenstopvorrichtung die Merkmale der Ansprüche 2 bis 12 aufweisen.According to the invention, this aim can be achieved with the features according to the characterizing part of claim 1. In addition, the sliver stop device can have the features of claims 2 to 12.

Weitere Einzelheiten und Vorteile ergeben sich aus der Beschreibung zweier Ausführungsbeispiele der Erfindung anhand der Zeichnung.Further details and advantages result from the description of two exemplary embodiments of the invention with reference to the drawing.

In dieser zeigt

  • Figur 1 eine Seitenansicht der Luntenstopvorrichtung
  • Figur 2 eine andere Ausführungsform einer Luntenstopvorrichtung.
In this shows
  • Figure 1 is a side view of the match stop device
  • Figure 2 shows another embodiment of a match stop device.

In einem C-förmigen Rahmen 1 ist an einem der Schenkel eine Spule mit Eisenkern 5 und in einem Abstand von dieser ein Klemmorgan angeordnet. Dieses Klemmorgan kann bei einer Ausführungsvariante (Fig.1) ein schwenkbarer Klemmarm 2 sein. An seinem freien Ende sitzt parallel zur Spule mit dem Eisenkern 5 im Klemmarm 2 ein erster Magnetstab 3.In a C-shaped frame 1, a coil with an iron core 5 is arranged on one of the legs and a clamping element is arranged at a distance therefrom. In one embodiment variant (FIG. 1), this clamping member can be a pivotable clamping arm 2. At its free end, a first magnetic rod 3 sits parallel to the coil with the iron core 5 in the clamping arm 2.

Der andere Schenkel des Rahmens 1 weist ungefähr gegenüber dem Gelenk des Klemmarms 2 einen zweiten Magnetstab 4 auf, wobei dieser etwas in den Schwenkbereich des Klemmarmes 2 ragt.The other leg of the frame 1 has a second magnetic rod 4 approximately opposite the joint of the clamping arm 2, which projects somewhat into the pivoting range of the clamping arm 2.

Es ist aber auch möglich, mehrere zweite Magnetstäbe 4 parallel zueinander vorzusehen. Dabei ragt nur der letzte zweite Magnetstab 4 in den Schwenkbereich des Klemmarmes 2. Die zweiten Magnetstäbe 4 sind zum auf dem Klemmarm 2 angeordneten ersten Magnetstab 3 anziehend gepolt.However, it is also possible to provide a plurality of second magnetic bars 4 parallel to one another. Only the last second magnetic rod 4 protrudes into the swivel range of the clamping arm 2. The second magnetic rods 4 are attractively polarized to the first magnetic rod 3 arranged on the clamping arm 2.

In der Offenstellung der Luntenstopvorrichtung ist der Klemmarm 2 von der Spule mit Eisenkern angezogen. Die Lunte 8 gleitet entlang dem anderen Schenkel über die zweiten Magnetstäbe 4. Bei einem Fadenbruchsignal von einem Fadenwächter erhält die Spule mit Eisenkern 5 Strom und das sich aufbauende Magnetfeld stösst den auf dem Klemmarm 2 montierten ersten Magnetstab 3 ab. Dieser gelangt in den Anziehungsbereich der zweiten Magnetstäbe 4 und wird gegen den in den Schwenkbereich des Klemmarms 2 ragenden zweiten Magnetstab 4 gezogen. Die zwischen diesen beiden Magnetstäben 3 bzw. 4 liegende Lunte wird festgeklemmt und ihr Weitertransport unterbunden. Die Rückstellung des Klemmarmes 2 erfolgt von Hand durch die ohnehin mit der Lunte manipulierende Bedienungsperson oder durch eine elektrische oder elektromechanische Rückstelleinrichtung.In the open position of the match stop device, the clamping arm 2 is attracted to the coil with an iron core. The fuse 8 slides along the other leg over the second magnetic rods 4. When a thread break signal is received from a thread monitor, the coil with iron core 5 receives current and the magnetic field that builds up repels the first magnetic rod 3 mounted on the clamping arm 2. This reaches the area of attraction of the second magnetic bars 4 and is pulled against the second magnetic bar 4 projecting into the pivoting area of the clamping arm 2. The fuse between these two magnetic bars 3 and 4 is clamped and their further transport is prevented. The clamping arm 2 is reset by hand by the operator who is already manipulating the fuse or by an electrical or electromechanical reset device.

Bei einer anderen Ausführungsform (Fig.2) einer Luntenstopvorrichtung wird anstelle eines Klemmarmes 2 als Träger für den ersten Magnetstab 3 ein in einem Schlitz geführtes Schlittenelement 2' verwendet. In der Offenstellung ist der Magnetstab 3 auch wieder von der Spule mit Eisenkern 5 angezogen und festgehalten. Bei Fadenbruch erhält die Spule mit Eisenkern 5 wieder Strom und stösst den ersten Magnetstab 3 ab. Durch die Anziehung von den zweiten Magnetstäben 4 wird die Lunte 8 festgeklemmt. Auch hier kann die Rückstellung von Hand oder durch eine Rückstelleinrichtung 6, z. B. eine Feder, erfolgen. Es ist bei beiden Ausführungsformen möglich, anstelle der ersten oder zweiten Magnetstäbe 3 bzw. 4, welche Permanentmagnete sind, Elektromagnete zu verwenden. Dadurch sind die Anziehungs- und Abstossungskräfte, also auch die Schliesskräfte, sehr genau dosierbar. Es ist auch möglich, die Schliesskraft druckabhängig zu steuern, indem ein Aufleger der Klemmelemente mit einem Druckfühler versehen wird und dieser über eine Regeleinrichtung die Schliesskraft regelt.In another embodiment (FIG. 2) of a sliver stop device, a slide element 2 ′ guided in a slot is used instead of a clamping arm 2 as a carrier for the first magnetic rod 3. In the open position, the magnetic rod 3 is also back from the coil Iron core 5 tightened and held. If the thread breaks, the bobbin with iron core 5 receives current again and repels the first magnetic rod 3. The fuse 8 is clamped by the attraction of the second magnetic bars 4. Here too, the reset can be done by hand or by a reset device 6, e.g. B. a spring. In both embodiments it is possible to use electromagnets instead of the first or second magnetic bars 3 and 4, which are permanent magnets. As a result, the forces of attraction and repulsion, including the closing forces, can be metered very precisely. It is also possible to control the closing force as a function of pressure by providing a support for the clamping elements with a pressure sensor and regulating the closing force via a control device.

Die Klemmelemente, welche bei der ersten und zweiten Ausführungsform durch die ersten und zweiten Magnetstäbe 3 bzw. 4 gebildet sind, können auch Nocken oder andere Erhebungen bzw. ein Profil tragen, das eine teilweise formschlüssige Klemmung ermöglicht, sodass die Klemmkräfte klein gehalten werden können. Dies kann insbesondere bei bestimmten Materialien von Vorteil sein.The clamping elements, which are formed by the first and second magnetic rods 3 and 4 in the first and second embodiment, can also carry cams or other elevations or a profile that enables a partially positive clamping, so that the clamping forces can be kept small. This can be particularly advantageous for certain materials.

Der besondere Vorteil dieser Luntenstopvorrichtung liegt in der gut zugänglichen und freien Luntenbahn sowie in der sehr einfachen Herstellung der Vorrichtung. Bei einigen Varianten ist zusätzlich die gute und zeitlich steuerbare Klemmkraft wesentlich.The particular advantage of this sliver stop device lies in the easily accessible and free sliver path and in the very simple manufacture of the device. In some variants, the good and controllable clamping force is also essential.

Claims (12)

1. Sliver stop device for a spinning machine to stop the sliver transport in the case of a yarn break characterised in, that the sliver stop device comprises a frame (1), which is open on one side and which carries a movable clamping means (2), thereon is mounted a first magnetic element (3), an electromagnetic element (5) is fitted on the frame in the opposite position of the clamping means (2) in its position for not clamping, said electromagnetic element (5) holds said clamping means (2), in its open position and, on the other hand, after a control impulse occurs said electromagnetic element moves said clamping means (2) to its closed position, at least one second element, working in a magnetic manner, is mounted at a place of the frame in the opposite position to the electromagnetic element (5) and said second magnetic element moves also said clamping means (2) to its closed position and holds it in this position, in which the sliver is clamped.
2. Sliver stop device defined in claim 1, wherein the clamping means (2) is coupled with a reset device to move said clamping means from the clamping position to the open position.
3. Sliver stop device defined in claim 1, wherein the clamping means is a clamping arm (2), mounted in movable manner on the frame and on its free end carries a first magnetic element (3).
4. Sliver stop device as defined in claim 1, wherein the clamping means is a sliding support (2') which is guided in the frame (1) and on them is mounted a first magnetic element (3) on the side which is parallel to the path of the sliver.
5. Sliver stop device as defined in claim 1, wherein a closing spring additionally to the force of the electromagnetic element (5) moves the clamping means (2) into the clamping position.
6. Sliver stop device as defined in claim 1, wherein the power produced by the electromagnetic element (5) against the first magnetic element (3) has the strength to move it into the area of the power of attraction of the second magnetic element (4) so that the sliver is clamped by both.
7. Sliver stop device as defined in claim 1, wherein at least one of the second magnetic elements (4) is so arranged that it deforms the sliver in the clamping phase in combination with the first magnetic element (3), and so the clamping effect is increased.
8. Sliver stop device as defined in claim 1, wherein the first and/or the second magnetic elements (3 resp. 4) contains on its surface a profile which promotes the clamping effect.
9. Sliver stop device as defined in claim 1, wherein the first and second magnetic element (3 resp. 4) is an magnetic rod.
10. Sliver stop device as defined in claim 1, wherein the first and second magnetic element (3 resp. 4) is an electromagnetic element.
11. Sliver stop device as defined in claim 1, wherein the first or the second magnetic element (3 resp. 4) is a magnetic rod and the other element is an electromagnet.
12. Sliver stop device as defined in claim 1, wherein the clamping means (2) is moving in such a path that the motion of the sliver favours the clamping effect.
EP19830810558 1983-01-12 1983-12-02 Device for clamping a roving Expired EP0114568B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH14183A CH660039A5 (en) 1983-01-12 1983-01-12 LUNST STOP DEVICE.
CH141/83 1983-01-12

Publications (2)

Publication Number Publication Date
EP0114568A1 EP0114568A1 (en) 1984-08-01
EP0114568B1 true EP0114568B1 (en) 1986-05-28

Family

ID=4180180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830810558 Expired EP0114568B1 (en) 1983-01-12 1983-12-02 Device for clamping a roving

Country Status (3)

Country Link
EP (1) EP0114568B1 (en)
CH (1) CH660039A5 (en)
DE (1) DE3363821D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507266C1 (en) * 1995-03-03 1996-10-10 Chemnitzer Spinnereimaschinen Sliver stop for drafting system on spinning machines
IT201800009797A1 (en) * 2018-10-29 2020-04-29 Fameccanicadata Spa TRAP DEVICE FOR A WIRE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH286065A (en) * 1949-10-29 1952-10-15 Perfogit S P A Device for severing threads which have been broken in a machine processing them, for example in a thread stretching device.
GB1154847A (en) * 1965-07-16 1969-06-11 Edmund Hamel Improvements in Stop Motions for Spinning Frames and the like
NL7217621A (en) * 1972-12-22 1974-06-25
DE2619430C2 (en) * 1976-05-03 1985-08-22 W. Schlafhorst & Co, 4050 Mönchengladbach Device for monitoring the thread path

Also Published As

Publication number Publication date
DE3363821D1 (en) 1986-07-03
CH660039A5 (en) 1987-03-13
EP0114568A1 (en) 1984-08-01

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