EP1762645A1 - Flat bed knitting machine - Google Patents

Flat bed knitting machine Download PDF

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Publication number
EP1762645A1
EP1762645A1 EP05019388A EP05019388A EP1762645A1 EP 1762645 A1 EP1762645 A1 EP 1762645A1 EP 05019388 A EP05019388 A EP 05019388A EP 05019388 A EP05019388 A EP 05019388A EP 1762645 A1 EP1762645 A1 EP 1762645A1
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EP
European Patent Office
Prior art keywords
compressed air
knitting machine
nozzle
working position
machine according
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
EP05019388A
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German (de)
French (fr)
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EP1762645B1 (en
Inventor
Thomas Dipl.-Ing. Stoll
Jürgen Dipl.-Ing. Mohr
Tobias Kaifler
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H Stoll GmbH and Co KG
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H Stoll GmbH and Co KG
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Publication date
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Priority to DE200550007628 priority Critical patent/DE502005007628D1/en
Priority to EP20050019388 priority patent/EP1762645B1/en
Publication of EP1762645A1 publication Critical patent/EP1762645A1/en
Application granted granted Critical
Publication of EP1762645B1 publication Critical patent/EP1762645B1/en
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B7/00Flat-bed knitting machines with independently-movable needles
    • D04B7/04Flat-bed knitting machines with independently-movable needles with two sets of needles
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B15/00Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54Thread guides

Definitions

  • the invention relates to a flat knitting machine with at least two opposite and between a comb gap enclosing needle beds and with a device that presses the knitting thread by means of compressed air into the comb gap.
  • Such flat knitting machines are today generally state of the art.
  • the device has on the front and rear slide part in each case two rigidly arranged compressed-air nozzles whose air outlet openings are directed in the direction of the comb gap. Compressed air is applied to the nozzles at a certain point in time, so that the thread is pressed in the direction of the comb gap and can be reliably caught by the needle hooks.
  • the rigidly mounted compressed air nozzles are mounted at a relatively large distance from the comb gap on the front and rear slide part, as they otherwise with facilities in the comb gap area, such as Holders of thread guide rods or the thread guides themselves could collide. Due to this large spacing, however, a relatively large amount of compressed air must be supplied to the nozzles in order to be able to press the thread securely into the comb gap.
  • the known device is also relatively space consuming, since it has on the front and rear slide member each having a block with two nozzles.
  • the present invention is based on the object to provide a flat knitting machine with a device that pushes the knitting thread by means of compressed air in the comb gap, which consumes less compressed air than the devices known knitting machines and saves space.
  • the object is achieved with a flat knitting machine of the aforementioned type according to the invention that the device which presses the knitting thread by means of compressed air into the comb gap, at least one between a rest position and a working position movable back and forth compressed air nozzle.
  • the nozzle In its working position, the nozzle can be arranged very close to the comb gap, so that a small amount of compressed air is sufficient to press the thread safely into the comb gap. In its rest position, however, the at least one nozzle is far enough away from the comb gap to avoid collisions with there arranged organs such as yarn guides.
  • the at least one compressed air nozzle against a spring force from its rest position into the working position is movable. All that needs to be done then is to put the at least one nozzle into the working position and put it there for energy to hold the desired period of time. The return to the rest position happens solely due to the spring force.
  • the at least one nozzle is linearly movable back and forth between its rest and working position.
  • the nozzle can then be moved in this direction to the comb gap and thus takes up less installation space than a nozzle, which performs a pivoting movement between the rest position and the working position.
  • a pneumatic cylinder may be provided which moves the at least one compressed air nozzle from the rest position to the working position. If the pneumatic cylinder is a double-acting pneumatic cylinder, then the movement of the nozzle from the working position to the rest position by means of compressed air can be performed. However, if the return to the rest position by means of a spring, it is sufficient to provide a single-acting cylinder.
  • the use of a pneumatic cylinder has advantages, as it is driven by compressed air, which must be provided anyway for the nozzle. Of course, instead of a pneumatic cylinder but also a hydraulic cylinder, an electric motor with a spindle or with an eccentric disc or another type of drive device for the nozzle could be provided.
  • the pneumatic cylinder and the at least one compressed air nozzle from the same compressed air source and a common valve with compressed air can be acted upon. This can be ensured in a simple manner that the nozzle is always in working position when it is pressurized with compressed air.
  • the at least one compressed air nozzle can also be arranged in its working position of organs located in the region of the comb gap, such as yarn guides, to be movable out of the collision area with this organ, counter to a spring force. It is then not necessary to move the at least one nozzle to its rest position in order to avoid collisions with such organs. After passing through the organ, the nozzle is returned to its original working position by the spring.
  • the at least one compressed-air nozzle can be mounted so as to be limitedly pivotable at least in its working position and can be pivoted out of the collision area by an organ located in the comb-gap area.
  • the working position of the at least one compressed air nozzle is adjustable.
  • the at least one compressed air nozzle has two V-shaped mutually arranged air outlet openings. The air flow then exits the at least one nozzle at a predetermined angle and is directed in the direction of the comb gap.
  • the knitting machine has several knitting systems, it is expedient if in each case a device which presses the knitting thread into the comb gap by means of compressed air is arranged between two knitting systems. The knitting thread is then always trailing to the knitting system subjected to an air flow, which presses it in the direction of the comb gap.
  • a device 1 which presses a knitting yarn 71 in the direction of comb gap, shown, which is arranged on a carriage 60 of a flat knitting machine, of which two needle beds 80, 80 ' are shown, which include a comb gap 100 between them.
  • a yarn guide 70 is shown, the knitting needles 81, 81 ', the knitting yarn 71 supplies.
  • the device 1 has a compressed air nozzle 10, which is shown in Fig. 1 in its rest position.
  • the nozzle 10 is pivotally mounted about an axis 12 on a slider 20.
  • a compression spring 21 is supported, which acts on a leg 15 of the nozzle 10 and therefore causes them to pivot in the direction of arrow 16 until a connected to the nozzle 10 pin 13 comes to rest on an actuator 22.
  • the nozzle 10 is adjusted so that its air flow exactly to the center of the comb gap 100.
  • the slider 20 is acted upon by the piston rod 41 of a single-acting pneumatic cylinder 40 and is rigidly connected thereto. Laterally, the nozzle 10 is guided over a pin 23 which is pressed into the slide 20 and engages in a slot 31 which is introduced in a parallel to the piston rod 41 extending guide piece 30.
  • the guide piece 30 and the pneumatic cylinder 40 are both fastened via a holder 50 on the carriage 60 so that the nozzle 10 is in the vicinity of the comb gap 100.
  • the nozzle 10 is brought by a not shown here, acting in the opposite direction of the pressurized piston of the pneumatic cylinder 40 compression spring in the direction of arrow 18 from its working position to its rest position and held there when the cylinder 40 is not acted upon with compressed air.
  • the nozzle 10 can not collide with any member located in the region of the comb gap 100, for example the yarn guide 70.
  • nozzle 10 is shown in working position.
  • the piston rod 41 is extended.
  • the stream of air flowing out of the nozzle 10 can now press the thread 71 into the comb gap 100 so that it can be securely grasped by the needles 81, 81 '.
  • the piston rod 41 and the nozzle 10 have been acted upon by the valve 94 simultaneously with compressed air.
  • the acted upon by the piston rod 41 slide 20 has moved together with the associated nozzle 10 in the direction of arrow 19 to the comb gap 100 out.
  • By the simultaneous application of compressed air is passed through the nozzle 10 simultaneously with the movement in the working position, an air flow which presses the yarn 71 in the direction of the comb gap 100.
  • Fig. 3 shows the nozzle 10 as well as Fig. 2 in the working position.
  • the carriage 60 has moved with the nozzle 10 over the needle beds 80, 80 'away.
  • the nozzle 10 is pivoted by the yarn guide 70 when passing in the direction of the arrow 17 about the axis 12 against the force of the compression spring 21 , If the nozzle 10 has passed the yarn guide 70, then it is pivoted back by the force of the compression spring 21 in the direction of the arrow 16 back to its starting position.
  • Fig. 4 shows the device 1 in plan view in the direction of the arrow X of Fig. 2.
  • the nozzle 10 is in its working position. If the knitting machine has two or more knitting systems 61 and 62 as shown, the device 1 is positioned precisely between the systems 61, 62. The thread is always trailing to the knitting system 61, 62 acted upon by an air flow, which presses it in the direction of the comb gap 100. It can also be seen from Fig. 4 that the nozzle 10 has two air outlet openings 11 ', 11 "arranged in a V-shape, which open into a common air duct 11. As a result, the air flow exits the nozzle at predetermined angles in 19, 19' 10 off and is directed towards comb gap 100.
  • Fig. 5 shows a block diagram of the compressed air guide for the device 1.
  • the electromagnetically acted valve 94 is in the switched state.
  • the valve 94 was transmitted from a machine control, not shown, via a control line 93, a control signal.
  • compressed air is passed through the valve 94 through the hose 92 to the hoses 90 and 91, which guide the compressed air to the pneumatic cylinder 40 and the nozzle 10. If the nozzle 10 is not moved via a pneumatic cylinder but via another drive, the valve 94 alone controls the supply of compressed air to the nozzle 10 via the hose 91.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

An air jet (10) is used to move the yarn (71) from a yarn guide (70) into the gap (100) between the needle beds (80, 80'). A pneumatic actuator (40) moves the jet from a rest position to the working position near the gap (100). The jet mounting is spring loaded (21) and in addition to a longitudinal motion (18) the jet swings (17) to ensure that it does not collide with other machine parts. A single valve can control the air supplies (90, 91) to the jet (10) and the actuator (40).

Description

Die Erfindung betrifft eine Flachstrickmaschine mit mindestens zwei sich gegenüberliegenden und zwischen sich einen Kammspalt einschließenden Nadelbetten und mit einer Vorrichtung, die den Strickfaden mittels Druckluft in den Kammspalt drückt.The invention relates to a flat knitting machine with at least two opposite and between a comb gap enclosing needle beds and with a device that presses the knitting thread by means of compressed air into the comb gap.

Solche Flachstrickmaschinen gehören heute allgemein zum Stand der Technik. So beschreibt beispielsweise die FR 2 650 001 eine Flachstrickmaschine mit einer Vorrichtung, durch die ein über einen Fadenführer dem Strickprozess zugeführter Faden mittels Druckluft gezielt in Richtung Kammspalt gebracht wird. Die Vorrichtung weist auf dem vorderen und hinteren Schlittenteil jeweils zwei starr angeordnete Druckluftdüsen auf, deren Luftaustrittsöffnungen in Richtung des Kammspalts gerichtet sind. Die Düsen werden zu einem bestimmten Zeitpunkt mit Druckluft beaufschlagt, sodass der Faden in Richtung Kammspalt gedrückt wird und sicher von den Nadelhaken erfasst werden kann.Such flat knitting machines are today generally state of the art. For example, describes the FR 2 650 001 a flat knitting machine with a device through which a fed over a yarn guide the knitting process yarn is selectively brought by means of compressed air in the direction of comb gap. The device has on the front and rear slide part in each case two rigidly arranged compressed-air nozzles whose air outlet openings are directed in the direction of the comb gap. Compressed air is applied to the nozzles at a certain point in time, so that the thread is pressed in the direction of the comb gap and can be reliably caught by the needle hooks.

Die starr befestigten Druckluftdüsen sind in einem relativ großen Abstand vom Kammspalt auf dem vorderen und hinteren Schlittenteil montiert, da sie sonst mit Einrichtungen im Kammspaltbereich, wie den Haltern von Fadenführerstäben oder den Fadenführern selbst kollidieren könnten. Durch diese große Beabstandung muss den Düsen jedoch relativ viel Druckluft zugeführt werden, um den Faden sicher in den Kammspalt drücken zu können. Die bekannte Vorrichtung ist außerdem relativ platzaufwändig, da sie auf dem vorderen und hinteren Schlittenteil jeweils einen Block mit zwei Düsen aufweist.The rigidly mounted compressed air nozzles are mounted at a relatively large distance from the comb gap on the front and rear slide part, as they otherwise with facilities in the comb gap area, such as Holders of thread guide rods or the thread guides themselves could collide. Due to this large spacing, however, a relatively large amount of compressed air must be supplied to the nozzles in order to be able to press the thread securely into the comb gap. The known device is also relatively space consuming, since it has on the front and rear slide member each having a block with two nozzles.

Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Flachstrickmaschine mit einer Vorrichtung, die den Strickfaden mittels Druckluft in den Kammspalt drückt zu schaffen, die weniger Druckluft verbraucht als die Vorrichtungen bekannter Strickmaschinen und die Platz sparend ist.The present invention is based on the object to provide a flat knitting machine with a device that pushes the knitting thread by means of compressed air in the comb gap, which consumes less compressed air than the devices known knitting machines and saves space.

Die Aufgabe wird mit einer Flachstrickmaschine der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass die Vorrichtung, die den Strickfaden mittels Druckluft in den Kammspalt drückt, mindestens eine zwischen einer Ruheposition und einer Arbeitsposition hin und her bewegbare Druckluftdüse aufweist.The object is achieved with a flat knitting machine of the aforementioned type according to the invention that the device which presses the knitting thread by means of compressed air into the comb gap, at least one between a rest position and a working position movable back and forth compressed air nozzle.

In ihrer Arbeitsposition kann die Düse sehr dicht am Kammspalt angeordnet sein, sodass eine geringe Druckluftmenge ausreicht, den Faden sicher in den Kammspalt zu drücken. In ihrer Ruheposition ist die mindestens eine Düse dagegen weit genug vom Kammspalt entfernt, um Kollisionen mit dort angeordneten Organen wie Fadenführern zu vermeiden.In its working position, the nozzle can be arranged very close to the comb gap, so that a small amount of compressed air is sufficient to press the thread safely into the comb gap. In its rest position, however, the at least one nozzle is far enough away from the comb gap to avoid collisions with there arranged organs such as yarn guides.

Dabei ist es von Vorteil, wenn die mindestens eine Druckluftdüse entgegen einer Federkraft aus ihrer Ruheposition in die Arbeitsposition bewegbar ist. Es muss dann lediglich Energie aufgewendet werden, die mindestens eine Düse in die Arbeitsposition zu bringen und sie dort für die gewünschte Zeitdauer zu halten. Die Rückkehr in die Ruheposition geschieht allein aufgrund der Federkraft.It is advantageous if the at least one compressed air nozzle against a spring force from its rest position into the working position is movable. All that needs to be done then is to put the at least one nozzle into the working position and put it there for energy to hold the desired period of time. The return to the rest position happens solely due to the spring force.

Weitere Vorteile ergeben sich, wenn die mindestens eine Düse linear zwischen ihrer Ruhe- und Arbeitsposition hin und her bewegbar ist. Die Düse kann dann in dieser Richtung zum Kammspalt bewegt werden und nimmt somit weniger Einbauraum ein als eine Düse, die eine Schwenkbewegung zwischen der Ruheposition und der Arbeitsposition ausführt.Further advantages arise when the at least one nozzle is linearly movable back and forth between its rest and working position. The nozzle can then be moved in this direction to the comb gap and thus takes up less installation space than a nozzle, which performs a pivoting movement between the rest position and the working position.

Vorzugsweise kann ein Pneumatikzylinder vorgesehen sein, der die mindestens eine Druckluftdüse von der Ruheposition in die Arbeitsposition bewegt. Ist der Pneumatikzylinder ein doppelt wirkender Pneumatikzylinder, so kann auch die Bewegung der Düse von der Arbeitsposition in die Ruheposition mittels Druckluft durchgeführt werden. Erfolgt die Rückstellung in die Ruheposition jedoch mittels einer Feder, so genügt es, einen einfach wirkenden Zylinder vorzusehen. Die Verwendung eines Pneumatikzylinders hat Vorteile, da er mittels Druckluft angetrieben wird, die sowieso für die Düse zur Verfügung gestellt werden muss. Selbstverständlich könnten statt eines Pneumatikzylinders aber auch ein hydraulischer Zylinder, ein Elektromotor mit einer Spindel oder mit einer Exzenterscheibe oder eine andere Art von Antriebsvorrichtung für die Düse vorgesehen werden.Preferably, a pneumatic cylinder may be provided which moves the at least one compressed air nozzle from the rest position to the working position. If the pneumatic cylinder is a double-acting pneumatic cylinder, then the movement of the nozzle from the working position to the rest position by means of compressed air can be performed. However, if the return to the rest position by means of a spring, it is sufficient to provide a single-acting cylinder. The use of a pneumatic cylinder has advantages, as it is driven by compressed air, which must be provided anyway for the nozzle. Of course, instead of a pneumatic cylinder but also a hydraulic cylinder, an electric motor with a spindle or with an eccentric disc or another type of drive device for the nozzle could be provided.

Bei Verwendung eines Pneumatikzylinders ist es zweckmäßig, dass der Pneumatikzylinder und die mindestens eine Druckluftdüse von derselben Druckluftquelle und über ein gemeinsames Ventil mit Druckluft beaufschlagbar sind. Damit kann auf einfache Weise sichergestellt werden, dass sich die Düse immer in Arbeitsposition befindet, wenn sie mit Druckluft beaufschlagt wird.When using a pneumatic cylinder, it is expedient that the pneumatic cylinder and the at least one compressed air nozzle from the same compressed air source and a common valve with compressed air can be acted upon. This can be ensured in a simple manner that the nozzle is always in working position when it is pressurized with compressed air.

Die mindestens eine Druckluftdüse kann auch in ihrer Arbeitsposition von im Bereich des Kammspalts befindlichen Organen wie Fadenführern entgegen einer Federkraft aus dem Kollisionsbereich mit diesem Organ heraus bewegbar angeordnet sein. Es ist dann nicht notwendig, die mindestens eine Düse in ihre Ruheposition zu verfahren, um Kollisionen mit solchen Organen zu vermeiden. Nach Passieren des Organs wird die Düse durch die Feder wieder in ihre eigentliche Arbeitsposition zurückverstellt.The at least one compressed air nozzle can also be arranged in its working position of organs located in the region of the comb gap, such as yarn guides, to be movable out of the collision area with this organ, counter to a spring force. It is then not necessary to move the at least one nozzle to its rest position in order to avoid collisions with such organs. After passing through the organ, the nozzle is returned to its original working position by the spring.

Bei einer bevorzugten Ausgestaltung kann dazu die mindestens eine Druckluftdüse zumindest in ihrer Arbeitsposition begrenzt verschwenkbar gelagert sein und von einem im Kammspaltbereich befindlichen Organ aus dem Kollisionsbereich heraus schwenkbar sein.In a preferred embodiment, for this purpose, the at least one compressed-air nozzle can be mounted so as to be limitedly pivotable at least in its working position and can be pivoted out of the collision area by an organ located in the comb-gap area.

Zur exakten Ausrichtung des Luftstroms auf den Kammspalt ist es außerdem von Vorteil, wenn die Arbeitsposition der mindestens einen Druckluftdüse einstellbar ist.For exact alignment of the air flow to the comb gap, it is also advantageous if the working position of the at least one compressed air nozzle is adjustable.

Weiter ist es von Vorteil, wenn die mindestens eine Druckluftdüse zwei V-förmig zueinander angeordnete Luftaustrittsöffnungen aufweist. Der Luftstrom tritt dann in einem vorgegebenen Winkel aus der mindestens einen Düse aus und wird in Richtung Kammspalt gelenkt.Further, it is advantageous if the at least one compressed air nozzle has two V-shaped mutually arranged air outlet openings. The air flow then exits the at least one nozzle at a predetermined angle and is directed in the direction of the comb gap.

Falls die Strickmaschine mehrere Stricksysteme aufweist, ist es zweckmäßig, wenn jeweils zwischen zwei Stricksystemen eine Vorrichtung, die dem Strickfaden mittels Druckluft in den Kammspalt drückt, angeordnet ist. Der Strickfaden wird dann immer nachlaufend zum Stricksystem mit einem Luftstrom beaufschlagt, der ihn in Richtung des Kammspalts drückt.If the knitting machine has several knitting systems, it is expedient if in each case a device which presses the knitting thread into the comb gap by means of compressed air is arranged between two knitting systems. The knitting thread is then always trailing to the knitting system subjected to an air flow, which presses it in the direction of the comb gap.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer Flachstrickmaschine mit einer Vorrichtung, die den Strickfaden mittels Druckluft in den Kammspalt drückt, anhand der Zeichnung näher beschrieben.Hereinafter, a preferred embodiment of a flat knitting machine with a device which presses the knitting thread by means of compressed air into the comb gap, described with reference to the drawing.

Es zeigen:

Fig. 1
einen schematischen Querschnitt durch eine Flachstrickmaschine mit einer Vorrichtung, die den Strickfaden in Richtung Kammspalt drückt, mit einer Düse in Ruheposition;
Fig. 2
eine der Fig. 1 entsprechende Darstellung mit der Düse in Arbeitsposition;
Fig. 3
eine der Fig. 1 entsprechende Darstellung, wobei die Düse in Arbeitsposition von einem Fadenführer aus dem Kollisionsbereich weggeschwenkt ist;
Fig.4
eine Draufsicht in schematischer Darstellung auf die Vorrichtung, die den Strickfaden in Richtung Kammspalt drückt, der Strickmaschine aus Fig. 1;
Fig. 5
ein Blockschaltbild der Druckluftführung zur Druckluftdüse und einem Pneumatikzylinder der Vorrichtung zum Drücken des Strickfadens in Richtung Kammspalt der Strickmaschine aus Fig. 1.
Show it:
Fig. 1
a schematic cross section through a flat knitting machine with a device that pushes the knitting thread in the comb gap, with a nozzle in rest position;
Fig. 2
a representation corresponding to Figure 1 with the nozzle in the working position.
Fig. 3
a representation corresponding to Figure 1, wherein the nozzle is pivoted away in the working position of a yarn guide from the collision area ..;
Figure 4
a top view in a schematic representation of the device which presses the knitting thread in the direction of comb gap, the knitting machine of Fig. 1;
Fig. 5
a block diagram of the compressed air supply to the compressed air nozzle and a pneumatic cylinder of the device for pressing the knitting yarn in the direction of comb gap of the knitting machine of FIG. 1.

In Fig. 1 ist eine Vorrichtung 1, die einen Strickfaden 71 in Richtung Kammspalt drückt, gezeigt, die an einem Schlitten 60 einer Flachstrickmaschine angeordnet ist, von der noch zwei Nadelbetten 80, 80' dargestellt sind, die zwischen sich einen Kammspalt 100 einschließen. Außerdem ist ein Fadenführer 70 abgebildet, der den Stricknadeln 81, 81' den Strickfaden 71 zuführt.In Fig. 1, a device 1, which presses a knitting yarn 71 in the direction of comb gap, shown, which is arranged on a carriage 60 of a flat knitting machine, of which two needle beds 80, 80 ' are shown, which include a comb gap 100 between them. In addition, a yarn guide 70 is shown, the knitting needles 81, 81 ', the knitting yarn 71 supplies.

Die Vorrichtung 1 weist eine Druckluftdüse 10 auf, die in Fig. 1 in ihrer Ruheposition dargestellt ist. Die Düse 10 ist um eine Achse 12 schwenkbar an einem Schieber 20 befestigt. Im Schieber 20 stützt sich eine Druckfeder 21 ab, die einen Schenkel 15 der Düse 10 beaufschlagt und diese daher zu einer Schwenkbewegung in Richtung des Pfeils 16 veranlasst, bis ein mit der Düse 10 verbundener Stift 13 zur Anlage an ein Stellelement 22 kommt. Mithilfe des Stellelements 22 wird die Düse 10 so justiert, dass ihr Luftstrom exakt auf die Mitte des Kammspalts 100 trifft.The device 1 has a compressed air nozzle 10, which is shown in Fig. 1 in its rest position. The nozzle 10 is pivotally mounted about an axis 12 on a slider 20. In slide 20, a compression spring 21 is supported, which acts on a leg 15 of the nozzle 10 and therefore causes them to pivot in the direction of arrow 16 until a connected to the nozzle 10 pin 13 comes to rest on an actuator 22. By means of the adjusting element 22, the nozzle 10 is adjusted so that its air flow exactly to the center of the comb gap 100.

Der Schieber 20 wird von der Kolbenstange 41 eines einfach wirkenden Pneumatikzylinders 40 beaufschlagt und ist dazu starr mit dieser verbundenen. Seitlich wird die Düse 10 über einen Stift 23 geführt, der in den Schieber 20 eingepresst ist und in ein Langloch 31 eingreift, das in einem parallel zur Kolbenstange 41 verlaufenden Führungsstück 30 eingebracht ist. Das Führungsstück 30 und der Pneumatikzylinder 40 sind beide über einen Halter 50 am Schlitten 60 so befestigt, dass sich die Düse 10 in der Nähe des Kammspalts 100 befindet.The slider 20 is acted upon by the piston rod 41 of a single-acting pneumatic cylinder 40 and is rigidly connected thereto. Laterally, the nozzle 10 is guided over a pin 23 which is pressed into the slide 20 and engages in a slot 31 which is introduced in a parallel to the piston rod 41 extending guide piece 30. The guide piece 30 and the pneumatic cylinder 40 are both fastened via a holder 50 on the carriage 60 so that the nozzle 10 is in the vicinity of the comb gap 100.

Die Druckluftzufuhr für den in Fig. 1 dargestellten Kolben des Pneumatikzylinders 40 erfolgt über einen Schlauch 90 und für die Düse 10 über einen Schlauch 91. Dabei kann die Druckluftzufuhr durch ein gemeinsames, elektromagnetisch beaufschlagtes Ventil 94 (Fig. 5) gesteuert werden, an dessen Ausgang sowohl der Schlauch 90 als auch der Schlauch 91 angeordnet sind. Dadurch ist für die Beaufschlagung des Kolbens und der Düse 10 mit Druckluft nur ein Steuersignal nötig.The compressed air supply for the piston of the pneumatic cylinder 40 shown in Fig. 1 via a hose 90 and for the nozzle 10 via a hose 91. In this case, the compressed air supply by a common, electromagnetically acted upon valve 94 (Fig. 5) are controlled at the Output both the hose 90 and the hose 91 are arranged. As a result, only one control signal is required for the admission of the piston and the nozzle 10 with compressed air.

Die Düse 10 wird durch eine hier nicht dargestellte, in Gegenrichtung des druckluftbeaufschlagten Kolbens des Pneumatikzylinders 40 wirkende Druckfeder in Richtung des Pfeils 18 aus ihrer Arbeitsposition in ihre Ruheposition gebracht und dort gehalten, wenn der Zylinder 40 nicht mit Druckluft beaufschlagt ist. In der in Fig. 1 dargestellten Ruheposition kann die Düse 10 mit keinem im Bereich des Kammspalts 100 befindlichen Organ, beispielsweise dem Fadenführer 70 kollidieren.The nozzle 10 is brought by a not shown here, acting in the opposite direction of the pressurized piston of the pneumatic cylinder 40 compression spring in the direction of arrow 18 from its working position to its rest position and held there when the cylinder 40 is not acted upon with compressed air. In the rest position shown in FIG. 1, the nozzle 10 can not collide with any member located in the region of the comb gap 100, for example the yarn guide 70.

In Fig. 2 ist die Düse 10 in Arbeitsposition gezeigt. Die Kolbenstange 41 ist ausgefahren. Der aus der Düse 10 ausströmende Luftstrom kann jetzt den Faden 71 in den Kammspalt 100 drücken, damit er sicher von den Nadeln 81, 81' erfasst werden kann. Die Kolbenstange 41 und die Düse 10 sind über das Ventil 94 gleichzeitig mit Druckluft beaufschlagt worden. Der von der Kolbenstange 41 beaufschlagte Schieber 20 hat sich gemeinsam mit der mit ihm verbundenen Düse 10 in Richtung des Pfeils 19 zum Kammspalt 100 hin bewegt. Durch die gleichzeitige Beaufschlagung mit Druckluft wird durch die Düse 10 gleichzeitig mit der Bewegung in die Arbeitsposition ein Luftstrom geleitet, der den Faden 71 in Richtung Kammspalt 100 drückt.In Fig. 2, the nozzle 10 is shown in working position. The piston rod 41 is extended. The stream of air flowing out of the nozzle 10 can now press the thread 71 into the comb gap 100 so that it can be securely grasped by the needles 81, 81 '. The piston rod 41 and the nozzle 10 have been acted upon by the valve 94 simultaneously with compressed air. The acted upon by the piston rod 41 slide 20 has moved together with the associated nozzle 10 in the direction of arrow 19 to the comb gap 100 out. By the simultaneous application of compressed air is passed through the nozzle 10 simultaneously with the movement in the working position, an air flow which presses the yarn 71 in the direction of the comb gap 100.

Fig. 3 zeigt die Düse 10 ebenso wie Fig. 2 in Arbeitsposition. Allerdings hat sich der Schlitten 60 mit der Düse 10 über die Nadelbetten 80, 80' hinwegbewegt. Dabei passiert die Düse 10 in Arbeitsposition den stehenden Fadenführer 70. Damit keine Kollisionen zwischen diesen beiden Elementen auftreten, wird die Düse 10, wie dargestellt, vom Fadenführer 70 beim Passieren in Richtung des Pfeils 17 um die Achse 12 entgegen der Kraft der Druckfeder 21 verschwenkt. Hat die Düse 10 den Fadenführer 70 passiert, so wird sie durch die Kraft der Druckfeder 21 wieder in Richtung des Pfeils 16 in ihre Ausgangslage zurück geschwenkt.Fig. 3 shows the nozzle 10 as well as Fig. 2 in the working position. However, the carriage 60 has moved with the nozzle 10 over the needle beds 80, 80 'away. In order to avoid collisions between these two elements, the nozzle 10, as shown, is pivoted by the yarn guide 70 when passing in the direction of the arrow 17 about the axis 12 against the force of the compression spring 21 , If the nozzle 10 has passed the yarn guide 70, then it is pivoted back by the force of the compression spring 21 in the direction of the arrow 16 back to its starting position.

Fig. 4 zeigt die Vorrichtung 1 in der Draufsicht in Richtung des Pfeils X aus Fig. 2. Die Düse 10 befindet sich in ihrer Arbeitsposition. Weist die Strickmaschine, wie dargestellt, zwei oder mehr Stricksysteme 61 und 62 auf, so ist die Vorrichtung 1 genau zwischen den Systemen 61, 62 positioniert. Der Faden wird immer nachlaufend zum Stricksystem 61, 62 mit einem Luftstrom beaufschlagt, der ihn in Richtung des Kammspalts 100 drückt. Aus Fig. 4 ist auch zu erkennen, dass die Düse 10 zwei V-förmig zueinander angeordnete Luftaustrittsöffnungen 11', 11" aufweist, die in einen gemeinsamen Luftleitkanal 11 münden. Dadurch tritt der Luftstrom in vorgegebenen Winkeln in 19, 19' aus der Düse 10 aus und wird in Richtung Kammspalt 100 gelenkt.Fig. 4 shows the device 1 in plan view in the direction of the arrow X of Fig. 2. The nozzle 10 is in its working position. If the knitting machine has two or more knitting systems 61 and 62 as shown, the device 1 is positioned precisely between the systems 61, 62. The thread is always trailing to the knitting system 61, 62 acted upon by an air flow, which presses it in the direction of the comb gap 100. It can also be seen from Fig. 4 that the nozzle 10 has two air outlet openings 11 ', 11 "arranged in a V-shape, which open into a common air duct 11. As a result, the air flow exits the nozzle at predetermined angles in 19, 19' 10 off and is directed towards comb gap 100.

Fig. 5 zeigt ein Blockschaltbild der Druckluftführung für die Vorrichtung 1. Das elektromagnetisch beaufschlagte Ventil 94 befindet sich in geschaltetem Zustand. Dazu wurde dem Ventil 94 von einer nicht dargestellten Maschinensteuerung über eine Steuerleitung 93 ein Steuersignal übermittelt. Dadurch wird über den Schlauch 92 Druckluft durch das Ventil 94 hindurch zu den Schläuchen 90 und 91 geführt, die die Druckluft zum Pneumatikzylinder 40 und zur Düse 10 führen. Wird die Düse 10 nicht über einen Pneumatikzylinder sondern über einen anderen Antrieb bewegt, so steuert das Ventil 94 allein die Druckluftzufuhr zur Düse 10 über den Schlauch 91.Fig. 5 shows a block diagram of the compressed air guide for the device 1. The electromagnetically acted valve 94 is in the switched state. For this purpose, the valve 94 was transmitted from a machine control, not shown, via a control line 93, a control signal. As a result, compressed air is passed through the valve 94 through the hose 92 to the hoses 90 and 91, which guide the compressed air to the pneumatic cylinder 40 and the nozzle 10. If the nozzle 10 is not moved via a pneumatic cylinder but via another drive, the valve 94 alone controls the supply of compressed air to the nozzle 10 via the hose 91.

Claims (10)

Flachstrickmaschine mit mindestens zwei sich gegenüberliegenden und zwischen sich einen Kammspalt einschließenden Nadelbetten (80, 80') und mit einer Vorrichtung (1), die den Strickfaden (71) mittels Druckluft in den Kammspalt (100) drückt, dadurch gekennzeichnet, dass die Vorrichtung (1) mindestens eine zwischen einer Ruheposition und einer Arbeitsposition hin und her bewegbare Druckluftdüse (10) aufweist.Flat knitting machine with at least two needle beds (80, 80 ') located opposite one another and between a comb gap and with a device (1) which presses the knitting thread (71) into the comb gap (100) by means of compressed air, characterized in that the device ( 1) at least one between a rest position and a working position reciprocally movable compressed air nozzle (10). Flachstrickmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die mindestens eine Druckluftdüse (10) entgegen einer Federkraft aus ihrer Ruheposition in die Arbeitsposition bewegbar ist.Flat knitting machine according to claim 1, characterized in that the at least one compressed air nozzle (10) against a spring force from its rest position into the working position is movable. Flachstrickmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die mindestens eine Druckluftdüse (10) linear zwischen ihrer Ruhe- und Arbeitsposition hin und her bewegbar ist.Flat knitting machine according to claim 1 or 2, characterized in that the at least one compressed air nozzle (10) is linearly movable back and forth between its rest and working position. Flachstrickmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Pneumatikzylinder (40) vorgesehen ist, der die mindestens eine Druckluftdüse (10) von ihrer Ruheposition in die Arbeitsposition bewegt.Flat knitting machine according to one of claims 1 to 3, characterized in that a pneumatic cylinder (40) is provided which moves the at least one compressed air nozzle (10) from its rest position to the working position. Flachstrickmaschine nach Anspruch 4, dadurch gekennzeichnet, dass der Pneumatikzylinder (40) und die mindestens eine Druckluftdüse (10) von derselben Druckluftquelle und über ein gemeinsames Ventil (94) mit Druckluft beaufschlagbar sind.Flat knitting machine according to claim 4, characterized in that the pneumatic cylinder (40) and the at least one compressed air nozzle (10) from the same compressed air source and via a common valve (94) can be acted upon with compressed air. Flachstrickmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die mindestens eine Druckluftdüse (10) in ihrer Arbeitsposition von im Bereich des Kammspalts (100) befindlichen Organen wie Fadenführern (70) entgegen einer Federkraft aus dem Kollisionsbereich mit diesem Organ (70) heraus bewegbar angeordnet ist.Flat knitting machine according to one of claims 1 to 5, characterized in that the at least one compressed air nozzle (10) in its working position of located in the region of the comb gap (100) organs such as yarn guides (70) against a spring force from the collision area with this organ (70) is arranged movable out. Flachstrickmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die mindestens eine Druckluftdüse (10) zumindest in ihrer Arbeitsposition begrenzt verschwenkbar angeordnet ist und von einem im Kammspaltbereich befindlichen Organ (70) aus dem Kollisionsbereich heraus schwenkbar ist.Flat knitting machine according to claim 6, characterized in that the at least one compressed air nozzle (10) is at least limited pivotally arranged in its working position and from a located in the comb gap region organ (70) from the collision area out is pivotally. Flachstrickmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Arbeitsposition der mindestens einen Druckluftdüse (10) einstellbar ist.Flat knitting machine according to one of claims 1 to 7, characterized in that the working position of the at least one compressed air nozzle (10) is adjustable. Flachstrickmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die mindestens eine Druckluftdüse (10) zwei V-förmig zueinander angeordnete Luftaustrittsöffnungen (11', 11") aufweist.Flat knitting machine according to one of claims 1 to 8, characterized in that the at least one compressed air nozzle (10) has two V-shaped mutually arranged air outlet openings (11 ', 11 "). Flachstrickmaschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sie mehrere Stricksysteme (61, 62) aufweist und jeweils zwischen zwei Stricksystemen (61, 62) eine Vorrichtung (1), die den Strickfaden (71) mittels Druckluft in den Kammspalt (100) drückt, angeordnet ist.Flat knitting machine according to one of claims 1 to 9, characterized in that it comprises a plurality of knitting systems (61, 62) and in each case between two knitting systems (61, 62) a device (1), which the knitting thread (71) by means of compressed air into the comb gap ( 100) presses, is arranged.
EP20050019388 2005-09-07 2005-09-07 Flat bed knitting machine Not-in-force EP1762645B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200550007628 DE502005007628D1 (en) 2005-09-07 2005-09-07 Flat knitting machine
EP20050019388 EP1762645B1 (en) 2005-09-07 2005-09-07 Flat bed knitting machine

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EP20050019388 EP1762645B1 (en) 2005-09-07 2005-09-07 Flat bed knitting machine

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EP1762645B1 EP1762645B1 (en) 2009-07-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112004A1 (en) * 2019-05-08 2020-11-12 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Method for separating several threads in hooks from knitting needles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723362C (en) * 1940-06-12 1942-08-03 Seyfert & Donner Thread guides for knitting machines
FR2650001A1 (en) 1989-07-21 1991-01-25 Steiger Sa Atelier Constr Flatbed knitting machine
US6073466A (en) * 1996-05-31 2000-06-13 A.R.M.I.-Assistenza Ricambi Macchine Industriali S.R.L. Method and equipment for restraining while knitting the end portions of cut thread protruding from collars for knit-wear articles and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723362C (en) * 1940-06-12 1942-08-03 Seyfert & Donner Thread guides for knitting machines
FR2650001A1 (en) 1989-07-21 1991-01-25 Steiger Sa Atelier Constr Flatbed knitting machine
US6073466A (en) * 1996-05-31 2000-06-13 A.R.M.I.-Assistenza Ricambi Macchine Industriali S.R.L. Method and equipment for restraining while knitting the end portions of cut thread protruding from collars for knit-wear articles and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019112004A1 (en) * 2019-05-08 2020-11-12 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Method for separating several threads in hooks from knitting needles

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DE502005007628D1 (en) 2009-08-13

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