EP3670725A1 - Needle for forming stitches on a weft or warp knitting machine and weft or warp knitting machine with a plurality of such needles - Google Patents

Abstract

The invention provides a needle for stitch formation on a knitting or warp knitting machine which has a base body, a needle hook and a transmission member or tongue member which is movable in the longitudinal direction of the base body relative to the base body and the needle hook and is set up for this by this relative movement to close and open the base body of the needle hook. Furthermore, at least the base body has two opposite side walls which are spaced apart from one another by a gap and thereby form a needle slot in which the transmission member is at least partially received in order to guide the relative movement of the transmission member to the base body, the base body being at least one in one of the side walls provided guide portion which is adapted to contact the transmission member at least along part of the length of the transmission member to fix the transmission member in a depth direction of the needle slot, which extends perpendicular to the longitudinal direction of the base body. The invention also provides a knitting or warp knitting machine having a plurality of such needles and a method of making such a needle.

Description

Technical field

The present invention relates to a needle, in particular a needle combined from steel strip elements, for stitch formation on a knitting or warp knitting machine and a knitting or warp knitting machine with several such needles.

State of the art

The invention is a further development of the European patent application EP 3 290 555 A1 dated September 2, 2016, which provides an advantageous needle for stitch formation on a knitting or warp knitting machine, which has a base body, a needle hook and a transmission member or tongue member, which is movable in the longitudinal direction of the base body relative to the base body and the needle hook and is set up for this, to close and open the needle hook by a relative movement to the base body. The needle also has a connecting element which engages around the transmission element or tongue element at least along part of the length of the transmission element or tongue element, so that the relative movement of the transmission element or tongue element to the base body is guided by the connecting element, the connecting element being connected to an upper section of the Basic body is connected.

The in the EP 3 290 551 A1 The needle described enables the control function for the opening and closing movement of a transmission element to be effected outside the needle movement system. Another advantage is to influence the positioning of a cladding thread in the needle hook to be able to take. Furthermore, the described structure of the functional unit needle with a longitudinal transmission link is compact, so that no dirt particles can penetrate within the system.

However, it has been found that the production of the functional unit, in particular the connecting element, is extremely complex and unsuitable for mass production.

That in the EP 3 290 551 A1 The connecting element described is a U-shaped connecting element, the transmission member or tongue member being received in the recess of the U-shaped connecting element. In this case, the U-shape of the connecting element encompasses the transmission link. For this reason, it is necessary for the material of the U-shaped connecting element to be extremely malleable or flexible on the one hand in order to enable the extremely small bending radii, but on the other hand to be an extremely hard and therefore wear-resistant steel. However, both requirements can only be met to a limited extent. The problem with steel strips, which are made of hardened steel, is that the small bending radii of the U-shaped connecting element are difficult to produce and that there is often a cracking or even a breakage of the material at the bending points.

Object of the invention

The invention is based on the object of providing a needle for stitch formation on a knitting or warp knitting machine which makes it possible to simplify the structural design, in particular the manufacture, of the needle, while at the same time ensuring high wear resistance of the needle or the functional unit shall be. Furthermore, the needle provided is to form a functional unit which is firmly connected to one another and is easy to handle. This object is achieved by a needle for stitch formation on a knitting or warp knitting machine according to claim 1. Furthermore, the invention provides a knitting or warp knitting machine with several such needles according to claim 10. Preferred developments of the invention are given in the dependent claims.

Here, one of the core ideas of the present invention is to provide a needle for stitch formation on a knitting or warp knitting machine, in which a separate connecting element to be produced can be dispensed with, and instead a base body of the needle has at least one guide section provided in a side wall, which is set up for this is to contact a transmission member along at least part of the length of the transmission member in order to fix and guide the transmission member in a depth direction of the needle slot, which extends perpendicular to the longitudinal direction of the base body.

Using the proposed needle for stitch formation on a knitting or warp knitting machine, it is possible to simplify the construction and manufacture of the needle and thus to reduce the manufacturing and maintenance costs of the needle and the knitting or warp knitting machine.

According to one embodiment of the present invention, a needle for stitch formation on a knitting or warp knitting machine has a base body, a needle hook, and a transmission member which is movable in the longitudinal direction of the base body relative to the base body and the needle hook and is set up for this by this relative movement to close and open the base body of the needle hook. Here, at least the base body has two opposite side walls, which are spaced apart from one another by a gap and thereby form a needle slot in which the transmission member is at least partially is included to guide the relative movement of the transmission member to the base body. Furthermore, the base body has at least one guide section provided in one of the side walls, which is set up to contact the transfer member along at least part of the length of the transfer member, in order to move the transfer member in a depth direction of the needle slot, which extends perpendicular to the longitudinal direction of the base body, to fix.

In this way, the construction of the generic needle or the functional unit described above can be simplified, in particular the provision of the connecting element which is difficult to manufacture can be dispensed with, as a result of which the manufacturing costs of the needle and the maintenance costs and retrofitting costs of knitting or warp knitting machines can be reduced. Furthermore, the new construction of the needle as a functionally connected functional unit described above enables a compact, easy-to-use unit to be created. In this case, the structure of the functional unit needle with the longitudinal transmission link is compact, so that no dirt particles can penetrate within the system.

It is also advantageous that the base body and the two opposite side walls are integrally formed, or the base body is formed in three parts, namely from a central part and two separate side walls which are attached to the central part. In this case, the two side walls can be attached to the central part by gluing or welding, in particular laser welding.

Furthermore, it is preferred that the at least one guide section is defined by an incision running in the longitudinal direction of the base body.

According to a further embodiment of the present invention, the guide section forms a guide tab which is bent into the needle slot and which is designed to come into contact with the transfer member on one of its side surfaces which faces the transfer member received in the needle slot.

In this way it is possible, using simple means, to create a contact surface between the base body of the needle and the transmission member, by means of which the relative movement of the transmission member to the base body can be guided. This design makes it possible, in particular, to dispense with the connecting element, which is expensive to manufacture, as a result of which the previously difficult to carry out bending operations become obsolete.

The inventive fixed reception of the transmission member in the base body of the needle enables easily replaceable needle elements, thereby creating types of knitting machines that expand the area of application for double-surface circular knitting machines to flat knitting machines in designs from coarse to very fine.

The longitudinal movement of the transfer member or tongue member in the needle can occur during the needle movement by stopping in a phase-limited manner on an engaging element, such as an incision or hump, of the transfer member or tongue member outside of the knitting systems by means of holding blades, which are arranged, for example, around a needle cylinder.

In some embodiments, this results in the forward placement of a transfer finger of the transfer member or tongue member on the needle hook by means of a notched projection on its front section. The transfer finger height is advantageous due to a offset Larger and more stable and its underside can also be trained for the exact positioning of a plating thread. This is an important advantage of one aspect of the invention because plating forms the basis for a large number of types of patterns. Two different threads must be fed separately to the needles and one cover the basic thread as cover thread. This requires an exact positioning of the threads in the needle, which must be preserved when the stitch is formed. In trials of various users with the known sliding needles, it has surprisingly been found that the safety here is lower than with latch needles. The result was that this type of needle could not prevail in knitting machines. This shows which imponderables are to be reckoned with when threading in and how small differences that cannot be understood play a decisive role. It can only be assumed that the tongue shank widened for storage is important as a characteristic.

The design option of the widened transmission finger favors the fulfillment of the high requirement of uniform positioning of the separately fed threads in the needle hook.

It is also advantageous if the base body has a second guide section provided in one of the side walls, which is defined by a second cut running in the longitudinal direction of the base body, the two guide sections preferably being provided on the same side wall.

It is further preferred that the two guide sections are arranged spaced apart from one another in the longitudinal direction by a predetermined distance, and the two incisions are preferably cut into the respective side wall in opposite directions in the longitudinal direction of the base body.

By providing a second guide section, which is in particular spaced apart from the first guide section by the predetermined distance, it is possible to considerably increase the guide length of the transmission member, as a result of which the guidance of the transmission member becomes more stable, in particular the tilting behavior of the transmission member can be improved. Furthermore, the wear of the contact points between the transmission member and the base body, in particular the side surface of the guide plate, can be reduced.

Furthermore, it is advantageous that the at least one guide section is arranged in a region of the side wall, so that when the needle hook is closed, the at least one guide section can still contact the transmission member.

In this way it can be ensured that the guide section guides the transmission member over its complete range of motion.

According to a further embodiment of the present invention, a notch is provided on the at least one side wall, which has the at least one guide section, from which the incision extends.

It is further preferred that the needle slot has a depth that extends perpendicular to the longitudinal direction along the depth direction into the needle slot, and the depth is selected so that the transmission member can be received between the base body and the at least one guide section.

It is also advantageous if the needle hook also has two opposite side walls which are spaced apart from one another by a gap and thereby form an extension of the needle slot in which the Transmission member is at least partially received, wherein the base body and the needle hook are preferably integrally formed.

In this way, it is possible to enlarge the area in which the transmission member is guided, in particular in the needle slot, which can also further reduce the wear on the contact surfaces.

In some embodiments of the present invention, the base body, in particular a central part (1c) of the base body (1), has an upper section which directly adjoins the needle hook in the longitudinal direction of the base body and a central section which adjoins the longitudinal body of the base body connects the upper section, and a needle foot, which adjoins the central section in the longitudinal direction of the base body.

The needle foot can directly adjoin the central section in the longitudinal direction of the base body.

The upper section can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the central section, so that a step is formed between the upper section and the central section. The connecting element can be arranged completely above the step in the direction from the needle foot to the needle hook.

The middle section can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the needle foot.

The step can extend perpendicular to the longitudinal direction of the base body.

The relative movement of the transmission member to the base body can be completely above the step, i.e. above the step in the direction of the needle foot towards the needle hook.

The needle according to the invention can be set up so that the step forms a stop surface for a lower end surface of the transmission member. In this case, the relative movement of the transmission member to the base body downwards, that is, in the direction of the needle foot, can be limited by the step.

It is further preferred that the transmission member has an engagement element for engagement with an engagement unit of the knitting or warp knitting machine.

According to a further embodiment of the present invention, the engagement element is a recess or a projection, in particular a hump, which extends in the direction perpendicular to the longitudinal direction of the base body.

The needle hook can be formed in one piece with the base body. In this case, the base body has the needle hook.

The needle hook can be formed integrally, in particular in one piece, with the connecting element.

The needle hook can have two halves, wherein the two halves can be separated from one another at least in regions by a gap. The two halves can be completely separated from one another by the gap.

The two halves of the needle hook may be formed such that a needle curve of each half extends in a plane that is parallel to the plane in which a needle curve of the needle hook extends.

The gap can lie in a plane or extend in a plane which is parallel to the plane in which the needle curve of the needle hook extends.

Furthermore, it is preferred that the transmission member has at an upper end thereof in the direction from the needle foot to the needle hook to a transmission finger, which is configured to close and open the needle hook by the relative movement of the transmission member to the base body.

The transmission finger can have an upper section and a lower section which directly adjoins the upper section in the longitudinal direction of the base body.

The upper section of the transfer finger can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the lower section of the transfer finger, so that a step is formed between the upper section and the lower section.

The needle can be set up so that the step of the transfer finger forms a stop surface for a lower end face of the needle hook, so that the relative movement of the transfer member to the base body upwards, that is to say in the direction of the needle hook, is limited by the step.

Furthermore, the present invention relates to a knitting or warp knitting machine which has a plurality of needles according to the invention. The knitting or warp knitting machine according to the invention offers the advantageous effects which have already been explained above for the needle according to the invention.

The plurality of needles can be arranged in succession in the knitting or warp knitting machine. The knitting or Warp knitting machine can only have needles according to the invention.

The knitting or warp knitting machine can furthermore have an engagement unit for engagement with engagement elements of the transmission members of the needles.

The engagement unit may have a plurality of projections and recesses which are alternately arranged along the direction along which the plurality of needles are arranged in succession in the knitting or warp knitting machine.

The projections and recesses can each extend in a direction that is essentially perpendicular to the arrangement direction of the needles and / or essentially perpendicular to the longitudinal direction of the base body of the needles.

Furthermore, it is advantageous if the engagement unit has a holding rocker or the engagement unit is a holding rocker.

The knitting or warp knitting machine can furthermore have a rotatable needle cylinder having a knock-over edge, the plurality of needles being arranged in the needle cylinder.

The knitting or warp knitting machine can furthermore have holding elements engaging in the needle gaps present between the needles, in particular in the form of a spring washer, which form a gap to the knock-over edge, which allows newly formed stitches to slip through and, when the needles are advanced further, the stitches at Teeing edge stops.

The holding elements, in particular the spring washer, can be rotatably mounted so that the holding elements, especially the spring washer, can be rotated together with the needle cylinder. In particular, the holding elements, in particular the spring washer, can be rotated together with the needle cylinder by their engagement in the needle gaps.

Brief description of the figures

For easier understanding of the present invention, the Figures 1 to 37 the structure as well as the basic functioning of one already from the European patent application EP 3 290 555 A1 known needle and their use in a known knitting or warp knitting machine explained. An embodiment of the invention is based on the Figures 38 to 45 explained. Furthermore, the Figures 46 to 48 the representation of the stitch-forming center of the knitting of a warp knitting machine. Unless otherwise stated, the figures are all executed on an enlarged scale approximately 5: 1.

• Figuren 1 bis 4 Darstellungen des Aufbaues einer kompakten Funktionseinheit Strickmaschine mit längsgeführtem Übertragungsglied bzw. Zungenglied auf der Grundlage einer weniger spezialisierten Nadeltechnologie und erweiterten Möglichkeiten für die Konstruktion von Strickmaschinen mit zusätzlichen Anwendungsgebieten, und zwar
• Fig. 1 die Seitenansicht und Draufsicht des Nadelgrundkörpers 1;
• Fig. 2 die Seitenansicht des Übertragungsgliedes 11;
• Fig. 3 die Seitenansicht und Draufsicht von oben des Verbindungselements bzw. Verbindungsbügels 8;
• Fig. 4 eine Darstellung der montierten Funktionseinheit in Schließstellung des Übertragungsfingers 12 mit dem Nadelhaken 2;
• Fig. 5 die Vergrößerung der Vorderpartie der Funktionseinheit längsgeführte Zungennadel mit angedeuteter zusätzlicher Leitkufe L für den Plattierfaden;
• Fig. 6 eine Darstellung in Vergrößerung des Fadeneinlaufes verschiedener Phasen von Grund- und Plattierfaden in den Nadelhaken 2;
• Fig. 7 eine 3D-Darstellung des Ausschnittes eines Rundstrickmaschinenzylinders N mit den Phasen der Funktionseinheit zur Maschenbildung und die Anordnung einer Stahlbandsektion 17 vor dem Einstich 16 für die Haltevorsprünge 18;
• Fig. 8 das Beispiel einer Befestigung der Stahlbandsektionen 17 in einer Vertiefung 20 oberhalb des Schlosssystems mit einer Stahlbandabdeckung;
• Figuren 9 bis 13 Prinzipdarstellungen der Maschenbildung in einem Schnitt durch den Nadelkanal;
• Fig. 9 die Nadel in der Einlaufzone des Fadens in das Stricksystem;
• Fig. 10 die weitere Drehung des Zylinders mit der Rückbewegung der Nadel 1 zur Schließstellung des Nadelhakens 2 durch den Übertragungsfinger 12;
• Fig. 11 einen weiteren Rückzug der Nadel 1 mit geschlossenem Haken 2 in die Kulierstellung;
• Fig. 12 die Vorwärtsbewegung der Nadel 1, bei der das Übertragungsglied 11 mit dem Vorsprung 18 der Stahlbandsektion 17 von Fig. 11 ausgehend vorne an der Stirnfläche 15 angehalten wurde;
• Fig. 13 die gemeinsame Vorbewegung der Nadel 1 und des Übertragungsgliedes 11 in die Offenstellung des Nadelhakens 2 zur Ausgangsstellung, in der kein Haltevorsprung 18 vorhanden war;
• Fig. 14 links den Haltevorsprung 18 im Eingriff im Halteeinschnitt 13 des Übertragungsgliedes 11 vor der Rückbewegung der Nadel 1 und rechts die Anlage des Haltvorsprunges 18 an der Stirnfläche 15 des Übertragungsgliedes 11 zur Öffnung des Nadelhakens 2 bei der Vorbewegung der Nadel 1;
• Fig. 15 einen Ausschnitt in Seitenansicht und die Draufsicht auf den Nadelzylinderausschnitt mit dem Eingriff der Haltevorsprünge 18 in den Einstich 16 oben am Nadelzylinder (N) ;
• Fig. 16 links den Höcker 14 oberhalb des Haltevorsprunges 18 vor der Rückbewegung der Nadel 1 und rechts die Anlage des Haltevorsprunges 18 an der Stirnfläche 5des Gliedes 11 zur Öffnung des Nadelhakens 2 bei der Vorbewegung der Nadel 1;
• Fig. 17 einen Ausschnitt in Seitenansicht und die Draufsicht auf den Nadelzylinderausschnitt mit dem Eingriff der Haltevorsprünge 18 unter- und oberhalb des Höckers 14;
• Figuren 18 bis 20 die Ausbildung einer "Single Rundstrickmaschine", welche anstatt von außen einzeln gesteuerter Platinen eine oberhalb des Zylinders angeordnete Federringspirale aufweist, deren Windungen vom Nadelrücken her etwas in die Zwischenräume der Nadeln eingreifen, so dass beim Vorstoßen der Nadeln das Gestrick an der Zylinderoberkante zurückgehalten wird;
• Figuren 21 bis 25 Prinzipdarstellungen der üblichen Platinensteuerung in einem Schnitt durch den Nadelkanal und den aufgesetzten Platinenring:
  • Fig. 21 die Stellung der Platine zur Nadel 1 beim Beginn des Fadeneinlaufes in den Nadelhaken 2;
  • Fig. 22 den eingefangene neuen Faden, der bei Rückbewegung der Nadel 1 eingeschlossen wird; dabei geht die Platine geringfügig zurück und die alte Masche befindet sich auf dem Übertragungsfinger 12;
  • Fig. 23 den weiteren Rückzug der Platine vor der Kulierung; die alte Masche ist auf dem Vorsprung-Schenkel der Platine zum Abwurf bereit;
  • Fig. 24 die Nadel 1 in der Kulierstellung und die Platine in der hinteren Endstellung, so dass die alte Masche dabei über den Kopf des Nadelhakens 2 abgeworfen wird und sich durch die im Nadelhaken 2 befindliche Schlinge eine neue Masche bildet;
  • Fig. 25 die Platine, die sich in die vordere Endstellung bewegt hat, dabei die alte Masche weggeschoben hat und die sich neu bildende Masche im Platineneinschnitt eingeschlossen hat, so dass diese beim Vorstoßen der Nadel von der Platinennase zurückgehalten wird;
  • Fig. 26 eine Prinzipdarstellung des Fadeneinlaufes nach der Faden Zuführung in den Nadelhaken 2 durch eine Leitnase 29 an der Platine P;
  • Fig. 27 einen Schnitt des Nadelzylinders N mit aufgesetztem Platinenring in 3D-Darstellung;
  • Fig. 28 die Ansicht der Fig. 27 von vorne;
  • Fig. 29 die 3D-Darstellung der Platinensteuerung P durch die Steuerkurve 27 oberhalb des Platinenringes 23;
  • Fig. 30 die 3D-Prinzipdarstellung des Nadelzylinders zur Rippscheine einer RR-Rundstrickmaschine mit der Anordnung der Stahlbandsektionen 17 an den Schlosssystemen;
  • Figuren 31 bis 33 die Funktion der Maschenschieber 22 mit Vorschieben und Anhalten der Maschenschleife bei der Nadelbewegung während der Maschenbildung;
  • Figuren 34 bis 37 die Steuerung der Maschenschieber 22 mittels im Segmentsteueraufsatz 29 im Gehäuse 32 gelagertem Federstahlleitband 31, welches in einen Ausschnitt 30 am hinteren Ende des Maschenschiebers 22 eingreift und seine Rückwärtsbewegung verursacht, während die Vorwärtsbewegung durch die Wirkung der Gleitscheibe 33 auf das Ende des Maschenschiebers 22 erfolgt;
  • Figuren 38 bis 45 eine Ausführungsform der erfindungsgemäßen Nadel;
  • Figuren 46 bis 48 die Darstellung des maschenbildenden Zentrums der Maschenstofferzeugung einer Kettenwirkmaschine.

Show it:

• Figures 1 to 4 Representations of the structure of a compact functional unit knitting machine with longitudinal transfer link or tongue link based on a less specialized needle technology and expanded options for the construction of knitting machines with additional fields of application, namely
• Fig. 1 the side view and top view of the needle body 1;
• Fig. 2 the side view of the transmission member 11;
• Fig. 3 the side view and top view of the connecting element or connecting bracket 8;
• Fig. 4 a representation of the assembled functional unit in the closed position of the transfer finger 12 with the needle hook 2;
• Fig. 5 the enlargement of the front part of the functional unit longitudinal tongue needle with indicated additional guide runner L for the plating thread;
• Fig. 6 a representation in enlargement of the thread run-in of different phases of base and plating thread in the needle hook 2;
• Fig. 7 a 3D representation of the detail of a circular knitting machine cylinder N with the phases of the functional unit for stitch formation and the arrangement of a steel band section 17 before the recess 16 for the holding projections 18;
• Fig. 8 the example of fastening the steel band sections 17 in a recess 20 above the lock system with a steel band cover;
• Figures 9 to 13 Basic representations of stitch formation in a section through the needle channel;
• Fig. 9 the needle in the entry zone of the thread into the knitting system;
• Fig. 10 the further rotation of the cylinder with the return movement of the needle 1 to the closed position of the needle hook 2 by the transfer finger 12;
• Fig. 11 a further retraction of the needle 1 with the hook 2 closed in the culvert position;
• Fig. 12 the forward movement of the needle 1, in which the transmission member 11 with the projection 18 of the Steel belt section 17 from Fig. 11 starting at the front on the end face 15;
• Fig. 13 the joint advance of the needle 1 and the transmission member 11 into the open position of the needle hook 2 to the starting position, in which there was no holding projection 18;
• Fig. 14 on the left the holding projection 18 in engagement in the holding cut 13 of the transmission member 11 before the needle 1 moves back and on the right the bearing of the holding projection 18 on the end face 15 of the transmission member 11 for opening the needle hook 2 during the advancement of the needle 1;
• Fig. 15 a detail in side view and the top view of the needle cylinder cutout with the engagement of the holding projections 18 in the recess 16 at the top of the needle cylinder (N);
• Fig. 16 on the left the hump 14 above the holding projection 18 before the needle 1 moves back and on the right the contact of the holding projection 18 on the end face 5 of the link 11 for opening the needle hook 2 during the advance of the needle 1;
• Fig. 17 a detail in side view and the top view of the needle cylinder cutout with the engagement of the holding projections 18 below and above the hump 14;
• Figures 18 to 20 the formation of a "single circular knitting machine", which instead of externally individually controlled sinkers has a spring washer arranged above the cylinder, the windings of which engage somewhat in the spaces between the needles from the needle back, so that the knitted fabric is retained at the top edge of the cylinder when the needles are pushed forward;
• Figures 21 to 25 Schematic diagrams of the usual board control in a section through the needle channel and the attached board ring:
  • Fig. 21 the position of the board to the needle 1 at the beginning of the thread inlet in the needle hook 2;
  • Fig. 22 the captured new thread, which is included when the needle 1 moves back; the board goes back slightly and the old stitch is on the transfer finger 12;
  • Fig. 23 the further withdrawal of the circuit board prior to the cultivation; the old mesh is ready to be dropped on the projection leg of the board;
  • Fig. 24 the needle 1 in the culvert position and the board in the rear end position, so that the old stitch is thrown off over the head of the needle hook 2 and a new stitch is formed by the loop in the needle hook 2;
  • Fig. 25 the board which has moved into the front end position, thereby pushing away the old stitch and enclosing the newly forming stitch in the board incision, so that it is held back by the board nose when the needle is pushed forward;
  • Fig. 26 a schematic representation of the thread inlet after the thread feed into the needle hook 2 by a guide lug 29 on the board P;
  • Fig. 27 a section of the needle cylinder N with the plate ring in 3D representation;
  • Fig. 28 the view of the Fig. 27 from the front;
  • Fig. 29 the 3D representation of the board control P by the control curve 27 above the board ring 23;
  • Fig. 30 the 3D schematic representation of the needle cylinder for ribbed notes of an RR circular knitting machine with the arrangement of the steel band sections 17 on the lock systems;
  • Figures 31 to 33 the function of the stitch pusher 22 with advancing and stopping the stitch loop during the needle movement during stitch formation;
  • Figures 34 to 37 the control of the stitch slides 22 by means of a spring steel guide band 31 which is mounted in the segment control attachment 29 in the housing 32 and which engages in a cutout 30 at the rear end of the stitch slider 22 and causes its backward movement, while the forward movement takes place due to the action of the sliding disk 33 on the end of the stitch slider 22;
  • Figures 38 to 45 an embodiment of the needle according to the invention;
  • Figures 46 to 48 the representation of the stitch-forming center of the knitting of a warp knitting machine.

Detailed description of preferred embodiments

Preferred embodiments of the present invention are described in detail below with reference to the attached figures. Further modifications of certain features mentioned in this context can each be individually combined with one another to form further embodiments.

In the various figures, the same or corresponding elements are each identified by the same or similar reference symbols.

The Figures 1 to 17 are representations of the stitch formation of single circular knitting machines. In order to ensure their practical suitability, reed needles are provided in the case of latch needles between the needles in a sinker ring around the needle cylinder, which holds back the last stitch hanging in the hook when the needle advances at the knock-over edge and guides the newly forming stitch over the hook. With this version, hardly any insight into the stitch formation is possible, because everything is built up here. In contrast, the execution according to Figures 18 to 20 a clear design of a single knitting machine without sinkers. Instead of this, the windings of a spring washer reach into the spaces between the needles from the back of the needle with a pitch corresponding to the needle pitch above the knock-over edge of the needle cylinder. Instead of the sinker ring, the smooth-running bearing point (ball bearing) for accommodating horizontal guide segments for fixing the spring washer is provided on a bearing journal that runs downwards. The outer diameter is so large that the windings engage in the spaces between the needles and so the stitches on the needle Hold down movement.

Fig. 1 shows a side view and top view of the needle body or base body 1, which has the needle-specific features needle hook 2, needle face 3, needle slot 4. Behind it is the step 5, which up to the end stop 6 for the transmission member 11 ( Fig. 2 ) in its rear position is sufficient. The needle hook 2 contains a tab at the top for receiving the transfer finger 12. Lateral fixing recesses 7 are for the assembly and fastening of a connecting bracket 8 ( Fig. 3 ) provided with its fastening zone of the open legs 9.

The Fig. 2 is also a side view of the transmission member 11, which forms a flat component without deposits up to the end face 15 a prismatic body, which together with the needle body 1 within the The needle channel completely fills it and merges into the transfer finger 12 with the step 12a at the front. The holding incision 13 is provided in the vicinity of the end face 15.

Fig. 3 is the representation of a side view and the top view of the U-shaped connecting bracket 8. This has a head 10 and the attachment zone of the open legs 9. Also shows Fig. 3 schematically shows a welding point through which the connecting bracket 8 is connected to the upper portion of the base body or needle body 1.

In the Fig. 4 is shown in a side view of the fully assembled compact unit longitudinal tongue needle. The transmission member 11 is in the front closed position of the needle hook 2 by the transmission finger 12 due to the abutment of the shoulder 12a on the front edge of the needle hook 2. In this position, thread particles penetrating into the rear end of the transmission member 11 cannot build up. They are pushed to the stop 6 at the opening of the needle hook, where they come out of the needle channel again due to its bevel.

The Fig. 5 shows the front section of the Fig. 4 in enlargement. The transfer finger 12 widened by the paragraph 12a supports the separate positioning of the plating thread from the base thread for the knitting process of the plating on its underside. For this purpose, the underside can have a guide runner L which guides the plating thread to the underside in the hook 2 and which guides the transfer finger 12 exactly to the middle of the hook.

Fig. 6 is the basic representation of the thread infeed during the plating process in 4 phases. The plating or covering forms the basis for a large number of pattern types. Here, the two different threads need the needles can be fed exactly separately from two thread guides. The cover thread D is fed at an acute angle with respect to the base thread G and, during the relative movement of the needle hook 2, reaches the transfer finger 12 on its underside, ie closer to the needle shaft and to the weft edge, like the base thread G inserted in the needle hook 2.

The Fig. 7 is the clearly enlarged 3D principle representation for the arrangement of the functional parts for the opening and closing movement of the transfer finger 12 relative to the needle hook 2. The needle cylinder N contains the recess 16 in the channel side walls in front of which the steel band section 17 is arranged and the projections 18 in the cycle of the needle positions , once in the holding incision 13, the other are in operative connection on the end face 15 of the transmission member 11. The channel side walls are hidden for better understanding. The direction of rotation of the cylinder is clockwise. The steel belt section 17 is an example of an engagement unit of the knitting or warp knitting machine.

The Fig. 8 is a schematic representation of the arrangement of a steel band section 17 at the top of the lock system in a stop recess 20. Above this, a steel band cover 25 can also be attached in an unusually glued manner, so that there is a gap in which the steel band section 17 is held under tension.

Figures 9 to 13 show basic representations of the stitch formation in a section through the needle channel under the action of the steel band section 17 fastened to the top of the lock with the holding projections 18 during the forward and backward movement of the functional unit longitudinal tongue needle on the relative movement of the transmission member 11 to the needle 1. Z is the section through the Needle channel with the longitudinal tongue needle 1 therein and with S the Cut in the upper area of one of the knitting systems lined up on the cylinder surface. The following functions result when a needle passes through the knitting system:

In Fig. 9 the needle 1 is in the entry zone of the knitting system. The last stitch is placed over the needle breast 3 with the transfer finger 12 ( Fig. 10 ) held in the driven position, ie the transmission member 11 is in the rear position at the stop 6 of the needle 1 and a new thread is inserted into the needle hook 2. The first holding projection 18 of the steel belt section 17 is located in the holding cut 13 of the transmission member 11.

During the further rotation of the cylinder Fig. 10 the needle 1 was withdrawn. The transfer member 11 was stopped with its holding incision 13 by sliding along the holding projection 18, so that in this phase of the return movement the last stitch reaches the transfer finger 12 and the new thread is thereby enclosed. The holding cut 13 is now at the beginning of the first gap on the steel strip section 17th

Fig. 11 shows the state in which the needle 1 of Fig. 10 to Fig. 11 the holding incision 13 was located over the first gap in the steel band section 17, so that the needle 1 moved into the wedge position together with the transmission member 11 in the foremost position. During this process, the old stitch is thrown off the transfer finger 12, so that a new stitch now hangs in the needle hook 2. Before the movement of the needle 1 backwards, the second holding projection 18 of the steel band section 17 is already above the end face 15 on the transmission member 11.

Fig. 12 shows the state in which by the forward movement of the needle 1 of Fig. 11 to Fig. 12 the transmission member 11 was stopped with its end face 15 by the second holding projection 18 and the transmission finger 12 opened the needle hook 2, ie it comes back into the needle face 3. The end face 15 is already at the beginning of the second gap in the steel band section 17. The new stitch arrives from the needle hook 2 to the breast rise 3. The puncture 16 in the channel side wall of the needle cylinder is visible.

Fig. 13 shows the final phase, i.e. the state of Fig. 12 to Fig. 13 , in which there is no holding projection 18 of the steel band section 17, ie the needle 1 and the transmission member 11 come together into the driven position. The holding incision 13 runs into the holding projection 18 of the steel band section 17 in the next knitting system.

Between the representations according to 12 and 13 there is also the possibility of forming catch stitches using the same selection technique as with latch needles. For this purpose, a certain needle 1 is also not like Fig. 9 shows fully, but only driven out so far that the end face 15 is below the steel band section 17. During the subsequent return movement of the needle 1 together with the transfer member 11, the transfer finger 12 remains in the needle face 3, so that the stitch located there again reaches the needle hook 2, in which a new thread has already been caught.

The Figures 14 to 17 illustrate the two different arrangements of the steel band sections 17 on the lock system, the retaining projections 18 of which protrude from the inner surface and are flush with the other. This also causes differences at the front on the transmission element 11 and on the needle cylinder N.

In the Fig. 14 on the left is the holding projection 18 of the steel band section 17 in engagement of the holding incision 13 on the transmission member 11 for stopping when the needle 1 moves back, while in the Fig. 14 on the right, the second holding projection 18 above the end face 15 stops the transmission member 11 during the advance of the needle 1.

The Fig. 15 above shows in a section of the cylinder and the upper lock area the engagement of the retaining projections 18 protruding from the inside surface of the lock in the recess 16 of the channel webs of the needle cylinder N. The lower illustration is the top view of the section with a view of the needle channels and the detection of the retaining projections 18, which protrude into the invisible recess 16 of the side walls.

In Fig. 16 instead of the holding cut 13, the transmission member 11 has a hump 14 which, in the left-hand figure below and in the right-hand figure above, enters into an operative connection with the holding projections 18 on the steel belt section 17. The holding projections 18 do not protrude beyond the inner surface of the needle lock. For the space required by the hump 14 when the needle 1 moves back, a recess 19 is provided below the holding projections 18 in the needle lock.

The Fig. 17 Above, in a section of the cylinder and the upper lock area, shows the holding projections 18 corresponding to the outer diameter of the needle cylinder, above the recess 19 on the needle lock for the forward and backward movement of the hump 14 on the transmission member 11, and below, in plan view, the visible holding projections 18 of the steel band section 17.

In the Fig. 18 it can be seen how the spring washer 55 is guided in the guide segments 56, which, on the other hand, has a smooth-running bearing 52 on the bearing journal 53 in one Retaining ring 54 are added. Thus, the retaining ring 54 rotates synchronously with the needle cylinder due to the engagement of the spring ring spiral 55 in the needle gaps.

The Fig. 19 is the top view of the Fig. 18 on in a guide segment 56 for the spring washer 55 with the representation of the engagement of some turns of the spring washer 55 in the needle gaps.

Fig. 20 is a section through the needle cylinder N after the withdrawal of the needle 1, in which the hump 14 closes the needle hook by abutment on the retaining projection 18 of the steel band section 17, as from the Fig. 18 can be seen.

The Figures 21 to 26 are basic representations of the stitch formation of a single circular knitting machine using the usual blanks there and on the basis of the in Fig. 20 known machine design shown in a section through the needle channel and the attached circuit board ring.

Fig. 21 shows the position of the board P to the needle 1 at the beginning of the thread inlet. The last stitch is in the inclusion throat of the board P. Above this, the board P has a guide nose 29 for thread entry into the needle hook 2.

In the Fig. 22 During the return movement of the needle 1, the plate P has moved back so far that its guide nose 29 for the thread is still behind the needle hook 2 and the thread comes within the needle hook 2 when it slides past, so that the needle hook 2 closes before the needle hook 2 closes was safely introduced there by the transmission finger 12.

By further withdrawing the needle 1 according to Fig. 23 the old mesh became from the substructure of the inclusion throat until shortly before Took off position and the new thread formed into a loop. The board P was moved back slightly.

The Fig. 24 shows the curling position of the needle 1 while simultaneously dropping the old stitch from the needle hook 2. The circuit board P goes back completely so as not to hinder the formation of the new stitch in the needle hook 2.

In the Fig. 25 the needle 1 has already moved somewhat and the board P has assumed its front position, so that after the needle 1 has advanced further, Fig. 21 the new stitch located in the needle hook 2 is retained by the guide lug 29 of the board P and reaches the needle face 3.

The Fig. 26 shows on the left the view from the front of the thread guide, how the thread subsequently forms an angle due to the thread retraction during the curling, and on the right, as in the side view of the needle hook 2, through the guide lug 29 on the board P, the thread into the interior of the needle hook 2 is initiated.

The Fig. 27 is a section of the 3D representation of the needle cylinder N with the pressed-on plate ring 22 as a module unit, which enables a known machine concept. The recess 16 is located in the side walls of the needle channels below the sinker ring 23.

The Fig. 28 is the 3D view of the front view of the Fig. 27 . This shows how the board slots are arranged between the needle channels. The design of the plate ring 22 with carbon fiber material can be advantageous.

The Fig. 29 is the 3D representation of an advantageous single circular knitting machine with individually controlled sinkers P through the control cam 27 arranged above the plate ring 23, which can be adjusted radially by means of a control screw 25.

Fig. 30 is the 3D principle representation of an RR circular knitting machine with generic needle technology. Instead of the sinker ring, a dial R is provided, in which so-called dial needles are provided on the gap to the cylinder needles. In this way, double-faced knitted fabrics can be produced. The execution of the transmission member 11 is here after Fig. 16 shown with hump 14.

Figures 31 to 37 show for the sake of completeness the use of features of the generic needle also for latch needles. The larger needle path in the stitch formation catches the eye, which affects less systems. Instead of the usual sinkers, which obstruct the view of the stitch formation, here it is stitch holders / slides that enable an accessible machine design.

The Fig. 31 is the representation of the view of the side surface of a stitch shifter 22, which is in its forward position by the forward slide plate 33 of the previous system. When the needle 1 was pushed forward, the holding lug 24 formed a gap Sp due to the limited upward entrainment by means of the stitch loop to the top edge of the cylinder, so that the old stitch could slip through. The illustrated forward sliding disc 33 is still no longer effectively available from the previous system, so that when the spring is further turned, the spring steel guide band 31 in the return cutout 30 comes into action until the stitch sliding element 22 is inserted into it Fig. 32 shown backward end position. At this point, the spring steel guide band 31 has a bulge 34 on the upper side surface under this effect, the retaining lug 24 by means the rocking movement of the base of the shaft is pressed onto the tapping edge A. Thereafter, from the middle of the system, with further cylinder rotation in the segment control attachment 29, there is no longer a spring steel strip housing 32 and the forward sliding disc 33 now comes into action, as in FIG Fig. 33 is shown.

34 and 35 are additional explanations of the type according to the Figures 31 to 33 for the segment control attachment 29. This contains the housing 32 with spring steel guide band 31 and the receptacle of the forward sliding disc 33. The housing 32 is in the Fig. 34 shown in the central elevation section of the control block 29 as a side view. A stitch slider / holder 22 inserted into the slot ring 23 is also shown as a side view in FIG Fig. 34 depicted in its rear position at the rear end. When the needle 1 is pushed forward, the entrainment of the retaining lug 24 caused by the thread loops, limited by the cover rail 35, caused the gap Sp to the tapping edge A ( Fig. 31 ). The spring steel guide band 31 is engaged in the return cutout 30 of the stitch shifter / holder 22, which is in the lower tilt position due to the upward movement of the retaining lug 24.

Fig. 35 is the top view of the right-turning slot ring 23 in which the rear region of a stitch shifter / holder 22 is inserted in the slider slot 21 in the reverse position and the view of the fixed segment control attachment 29 without the cover rail 35, so that in the upper half the housing 32 and in the lower half of the forward sliding plate 33 is recognizably mounted in the segment control attachment 29. A recess 36 in the housing 32 results in two side webs, the slots 37 of which correspond to the return path of the stitch slider / holder 22 at a distance from the axis of rotation. The illustration also shows that the spring steel guide band 31 protrudes beyond the housing 32 side webs into the area of the forward sliding disk 33 and there the spring steel guide band 31 has a bulge 34 under this effect, the stitch pusher / holder 22 presses with its retaining lug 24 onto the tapping edge A ( Fig. 32 ).

Fig. 36 is the right partial plan view of the side surface of the spring steel guide band 31, in which the bulge 34 on the upper edge can be seen at the right end.

Fig. 37 shows how a spring wire ring 40 is received in a puncture of the tapping edge A, which is inserted in a groove on the end face of the cylinder Z, the seat fixation being ensured by the contact lugs 24 being held in phases by contact pressure.

An embodiment of a needle according to the present invention is shown in FIGS Figures 38 to 45 shown. In the embodiment shown, the base body 1 is constructed in three parts. The base body 1 consists of a central part 1c and two side walls 1a, 1b which sandwich the central part 1c. The Figures 46 to 48 show an application example of such needles.

Fig. 38 is the representation of the middle part 1c of the three-part constructed needle body or base body 1 in a side view. It can also be seen that the middle part 1c has an end stop 6 for the transmission member 11 in its rear or lower position.

Furthermore shows Fig. 39 the side view of a side wall 1a of the base body 1 of the needle. As can be seen from the side view, the side wall 3a has the needle-specific features needle hook 2 and needle breast 3. The side walls 1a and 1b of the base body are preferably steel strips with a polished surface. The side walls 1a, 1b can be glued or welded to the central part 1c, the welding is preferably carried out using of a laser beam. The needle hook consequently has two halves, the two halves being separated from one another by a gap.

Again Fig. 39 can be seen further, the side wall 1a has two incisions E1 and E2, through which two guide sections 8a, 8b are formed, which are each bent inward after the connection of the two side walls 1a, 1b to the central part 1c to form guide tabs 8c , whose side surfaces serve to guide the transmission link described in detail later. The curved tab will also be referenced later Fig. 42 further described.

Fig. 40 is the side view of the transmission member 11 or the transmission tongue, which has the transmission finger 12 and a bump 14 in the shaft shown below. The lower end face of the transmission member 11 serves as a stop surface with the stop 6 of the central part 1c in order to limit the movement of the transmission member 11 backwards or downwards.

Fig. 41 shows an enlarged partial view of a region of the side wall 1a, in which the two guide sections 8a, 8b are arranged. Again Fig. 41 can be removed, the two incisions E1 and E2 extend in the longitudinal direction L of the needle or the base body 1, in particular in opposite directions. The upper incision E2 extends from an end face of the side wall 1a to the rear or, as seen in the figure, downwards. The lower incision E2, on the other hand, extends from a notch to the front or, as seen in the figure, upwards. How Fig. 41 Furthermore, the two incisions E1, E2 and thus the two guide sections 8a, 8b are spaced apart by a distance D. The larger the distance D can be designed, the larger one is imaginary guide length of the transmission member 11, whereby its guidance is more stable.

Furthermore shows Fig. 42 a partial view from the right of the three-part base body 1, which illustrates the sandwich-like structure of the base body 1. Furthermore, the Fig. 42 the needle slot 4 formed by the two side walls 1a, 1b and the guide tab 8c bent inward into the needle slot 4 can be seen. Since the guide tab 8c of the lower guide portion 8a extends in the bottom-up direction as shown in FIG Fig. 42 extends from the inside to the outside, the movement of the transmission member 11 accommodated in the needle slot 4 is limited upwards by means of the hump 14.

Figures 43 to 45 each show the representation of a complete functional unit consisting of the three-part base body 1, having the central part 1c and the two side walls 1a, 1b, and the transmission member 11 accommodated therein in a longitudinally movable manner, the Figures 43 to 45 each show different positions of the transmission link.

Fig. 43 shows the open position of the needle or the needle hook 2. In the position shown, the transmission member 11 is in the rear or in the Figure 43 seen lower position. Again Fig. 43 can also be seen in this position, the lower end face of the transmission member 11 abuts the stop 6 of the central part 1c, whereby the movement of the transmission member 11 is limited.

Figures 44 and 45 each show the closed position of the needle or the needle hook 2. In the closed position, the movement of the transfer member 11 is limited by the contacting of the transfer finger 12 with the needle hook 2. In addition, as before described, the upward movement is limited by the guide tab 8c of the lower guide section 8a.

Figures 46 to 48 show the representation of the stitch-forming center of the significant knitting of a warp knitting machine. In this machine design, the needles are not individually movable in needle beds, but are firmly clamped in so-called needle bars in a certain division. All needles move together to form stitches. Patterns that are based on the basic functions of knitting, non-knitting and forming a stitch are not possible here. Parallel to the needle bars, the needle closing elements are provided in a second bar system in the machine. This requires many functional parts in a very small space. The application of the functional needle according to the Figures 38 to 42 avoid the second bar. Instead of this, there is a holding rocker 50, which is provided over the length of the bar and which acts as in FIG Figures 16 and 17 shown holding projection 18 on the hump 14 takes over. Instead of the cutouts in the holding projections 18, the holding rocker 50 swings out.

The Fig. 46 shows the needle bar B in the upper position. The holding rocker 50 received in a bearing rail 51 which is firmly connected to the machine is pivoted in and its holding projection 18 is located under the hump 14 of the transmission tongue 11.

The holding rocker 50 can be provided continuously over the entire length over which the needles are arranged.

The pivoting movement of the holding rocker 50 is synchronized with the up and down movement of the needles.

In Fig. 47 the needle bar B was pivoted back and closed by stopping the hump 14 on the transfer member 11 of the needle hook. Then the holding rocker 50 swung out, so that with the further downward movement of the hump 14 is moved past the holding projection 18, like that Fig. 48 in the lower needle bar position.

During the upward movement of the needle bar B, the controlled swinging of the holding rocker 50 is an analogous process.

An interesting further development is to design the holding rocker in the form of lamellae in order to influence the stitch formation for desired patterns by means of control magnets on individual needles.

From the foregoing description, those skilled in the art will recognize that various modifications and variations can be made in the device of the invention without departing from the scope of the invention.

Furthermore, the invention has been described in relation to certain embodiments, which, however, are only intended to provide a better understanding of the invention and are not intended to restrict it. Those skilled in the art will also immediately recognize that many different combinations of the elements can be used to practice the present invention.

Even if a certain number of components are mentioned in the previously described embodiments, a different number of these components can be used according to further embodiments.

Claims (15)

Needle for stitch formation on a knitting or warp knitting machine, the needle comprising: a base body (1), a needle hook (2), and a transmission member (11) which is movable in the longitudinal direction (L) of the base body (1) relative to the base body (1) and the needle hook (2) and which is set up by this relative movement to the base body (1) the needle hook (2 ) to close and open, wherein at least the base body (1) has two opposing side walls (1a, 1b) which are spaced apart from one another by a gap and thereby form a needle slot (4) in which the transmission member (11) is at least partially accommodated to the relative movement of the Lead transmission member (11) to the base body (1), characterized in that
the base body (1) has at least one guide section (8a) provided in one of the side walls (1a, 1b),
which is set up to contact the transmission member (11) along at least part of the length of the transmission member (11) in order to transmit the transmission member (11) in a depth direction (T) of the needle slot (4) which is perpendicular to the longitudinal direction (L) of the base body (1) extends to fix. Needle according to claim 1, in which the base body (1) and the two opposite side walls (1a, 1b) are integrally formed and the at least one guide section (8a) is preferably formed by an incision () in the longitudinal direction (L) of the base body (1). E1) is defined. The needle of claim 1 or 2, wherein the guide portion (8a) into the needle slot (4) bent guide tab (8c), which is adapted to come into contact with the transmission member (11) on one of its side surfaces, which faces the transmission member (11) accommodated in the needle slot (4). Needle according to one of the preceding claims, in which the base body (1) has a second guide section (8b) provided in one of the side walls (1a, 1b), which is formed by a second cut (E2) running in the longitudinal direction (L) of the base body (1) ) is defined, the two guide sections (8a, 8b) preferably being provided on the same side wall (2a). Needle according to one of the preceding claims, in which a notch is provided on the at least one side wall (1a, 1b) which has the at least one guide section (8a), from which the incision (E1) extends. Needle according to one of the preceding claims, wherein the needle slot (4) has a depth (T) which extends perpendicular to the longitudinal direction (L) along the depth direction (T) into the needle slot (4), and the depth (T) is selected such that the transmission member (11) can be received between the base body (1) and the at least one guide section (8a). Needle according to one of the preceding claims, wherein the needle hook (2) also has two opposite side walls (2a, 2b) which are spaced apart from one another by a gap and thereby form an extension of the needle slot (4) in which the transmission member (11 ) is at least partially included,
wherein the base body (1) and the needle hook (2) are preferably integrally formed. A needle according to any one of the preceding claims, in which
the main body (1), in particular a middle part (1c) of the main body (1), an upper section which directly adjoins the needle hook (2) in the longitudinal direction of the main body (1), a middle section which is in the longitudinal direction of the main body directly adjoins the upper section and has a needle foot, which joins the central section in the longitudinal direction of the base body,
the upper section has a smaller lateral extent perpendicular to the longitudinal direction of the base body than the central section, so that a step is formed between the upper section and the central section, and
the at least one guide section (8a) is arranged completely above the step in the direction from the needle foot to the needle hook. The needle of claim 8, wherein the needle is arranged so that the step forms a stop surface for a lower end surface of the transmission member (11), so that the relative movement of the transmission member (11) to the base body (1) in the direction of the needle foot through the Level is limited. Knitting or warp knitting machine having a plurality of needles according to one of the preceding claims. The knitting or warp knitting machine according to claim 10, further comprising an engaging unit for engaging engaging elements of the transmission members (11) of the needles. Knitting or warp knitting machine according to claim 11, wherein the engagement unit has a plurality of projections and recesses, which are arranged alternately along the direction along which the plurality of needles are arranged in succession. Knitting or warp knitting machine according to claim 12, wherein the projections and recesses each extend in a direction which is substantially perpendicular to the arrangement direction of the needles and / or substantially perpendicular to the longitudinal direction of the base body of the needles. Knitting or warp knitting machine according to claim 11, wherein the engagement unit has a holding rocker or the engagement unit is a holding rocker. Knitting or warp knitting machine according to one of claims 10 to 14, further comprising: a rotatable and a tapping edge having a needle cylinder, wherein the plurality of needles are arranged in the needle cylinder, and holding elements engaging from the needle back into the needle gaps present between the needles, in particular in the form of a spring washer spiral, which form a gap with the knock-over edge, which allows newly formed stitches to slip through and stops the stitches at the knock-over edge when the needles are advanced further, whereby the holding elements, in particular the spring washer, are rotatably mounted so that the holding elements can be rotated together with the needle cylinder.

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