EP1801277B1 - Device for manufacturing a spacer fabric - Google Patents

Description

The invention relates to a device for producing a spacer knitted fabric, in particular a spacer knitted fabric with a fabric surface spacing of more than 14 mm. Furthermore, the invention relates to a method for producing such a spacer knitted fabric.

For technical textiles and special functional clothing spacer textiles are often used, the two textile surfaces are connected by pile threads together. there only spacer knits of a height of 3 mm to 14 mm and knitted spacer fabric and spacer fabric are known up to a height of 60 mm or more. The height is the distance between the two textile surfaces, which are interconnected by a pile thread. As a pile thread is often used a monofilament thread. As an alternative to spacer fabrics, a spacer knit can be produced on a circular knitting machine with knitting cylinder and dial. For example, the one then tubular knitted surface is made with the needles of the dial and the other also tubular knitted surface with the needles of the knitting cylinder. Both knitted surfaces are connected with the monofilament running back and forth between them. The distance of the knitted surfaces is dependent on the distance between the knitting cylinder and the dial.

However, the distance between the dial and the knitting cylinder can not be made arbitrarily large to meet the desire to produce larger Kick surfaces distances to meet. Because the distance between dial and knitting cylinder must be bridged by the needles when they are expelled. A larger needle ejection requires a longer path in the needle lock, which requires longer locks. If longer locks are used, the productivity of the machine is reduced to the same extent, because longer locks have the consequence that fewer lock curves are possible over the circumference of a circular knitting machine. The system number at the diameter of the circular knitting machine is then reduced, which means fewer courses per machine revolution.

From the DE-OS 103 20 533 is a circular knitting machine for producing spacer knits known. For stitch formation At least in one embodiment of the machine, slider needles are used. Distances between the knitted surfaces of up to 14 mm can be achieved with this machine.

However, needles require locks, which have a lock curve not only for the needle but also for the slide. Such locks are more expensive than locks for latch needles. In addition, the application comes up against limits, if the distances of the knitted surfaces should be greater than 14 mm, because the then required over-shoots longer locks are necessary. It then applies the above with respect to the productivity of the knitting machine. If longer locks are used, the productivity of the machine is reduced to the same extent, because longer locks have the consequence that less lock curves are possible over the circumference of a circular knitting machine.

In the production of spacer knits using tongue needles, the distance of the two textile surfaces depends inter alia on the tongue or hinge lengths of the latch needles. The connecting thread of the two textile surfaces must be inserted in the catching position both in the Rippnadel as well as in the cylinder needle. In this case, both needles can be extended to the maximum extent that the thread located in the hook, which is used for stitching, still remains on the in-reserve needle tongue and does not slide over the inner edge of the needle tongue on the needle shaft. Thus, the distance between the two textile surfaces in the use of latch needles on the max. Hinge length limited. This is especially true in a knitting machine according to US 6,122,690 , In this knitting machine, two needle cylinders face each other coaxially. Both needle cylinders are equipped with latch needles. With This document discloses the transfer of stitches of a needle on a first knitting cylinder to a needle on a second knitting cylinder. When using the knitting cylinder arrangement according to US 6,122,690 for the production of spacer knits, the distance between two knit fabrics is limited by two times the hinge length minus one times the hook size, since the pile thread is inserted into both hooks of the knitting machine needles. It can thus be produced spacer fabrics with a distance of about 10 mm between the knitted surfaces.

On this basis, it is an object of the invention to provide a device for producing a spacer knit, which requires, if necessary, with latch needles. In addition, it is an object of the invention to provide a corresponding method.

This object is achieved with the device according to claim 1 and the method according to claim 20:

In the device according to the invention, two groups of needles are present, each forming a needle contour and are used to produce a knitted surface. Between two knitted surfaces extend sections or legs of a pile thread. This is guided by means of a group of assisting parts respectively in the catching area of the needles of one or the other needle contour, in order to be anchored in the respective knitting surface. The distance between the two needle contours is thus bridged by the Vorlegeteile. The size of the distance is no longer defined by the maximum achievable Nadelaustrieb or in the case of latch needles by the distance between the tongue tip in tongue return and needle hook. This distance adds Tongue pins determine the path that a loop or loop held in the hook may travel until it slides over the open tongue in reserve and is thus knocked off the needle during needle withdrawal. The device according to the invention is therefore particularly suitable for equipping with latch needles, wherein in principle also slide needles can be provided. The Nadelaustrieb can remain limited to the customary for producing single-layer knit fabric, which only small needle strokes and thus small lock curves are required. Correspondingly, a large number of knitting systems can be installed on a circular knitting machine and a large number of courses can be produced in one cylinder revolution. The device according to the invention therefore enables economical operation even when producing spacer knitted fabrics with fabric surface pitches of more than 14 mm.

Furthermore, the knitting machine according to the invention allows the production of spacer knits not only with high number of stitches per revolution (high system density) but also with high rotational speeds of the knitting cylinder. The low required ejection of the latch needles coincides with the budding, which is necessary for the production of simple, smooth knitwear. With a correspondingly high number of revolutions and the resulting productivity, it is now possible to work in the production of spacer knits.

In principle, it is possible to design the presentation parts so that they are movable between two yarn transfer points, namely the yarn transfer point of the first font and the yarn transfer point of the second font back and forth. However, it is preferred to move the presentation parts between a passive position and a yarn transfer position. The Passive position lies approximately halfway between the two yarn transfer positions. The group of submission items is divided into two subgroups. The first subgroup is assigned to the needles of the first fontur while the second subgroup is assigned to the needles of the second fontur. This means that each needle contour has its own pile thread feeder in the form of master parts. This concept allows both the setting of very small Fonturabstände and thus very small Kitchens distances as well as the setting of very large Kick Square distances.

The presentation parts can be moved in principle in different ways. It is preferred to store and move them longitudinally displaceable. The advancing movement or thread transfer movement can then be achieved, as the movement of the knitting tools (needles, in particular latch needles) through a lock, which is engaged with feet of the Vorlegeteile.

The inventive concept is generally suitable for knitting machines, even for flat knitting machines. However, it is preferably used in circular knitting machines. The first needle bed is designed as a knitting cylinder. The second bed may also be a knitting cylinder or a dial. In both cases, the second needle bed (knitting cylinder or dial) is preferably aligned coaxially with the first needle bed. The knitting machine thus obtained can be adjusted by varying the distance between the two knitting cylinders or between dial and knitting cylinder to different Knitting surface distances and thus Polfadenschenkellängen. The Vorlegeteile can be arranged in a circuit board ring, which is the gap between is arranged adjacent to the two knitting cylinders or between dial and knitting cylinder. In this sinker ring the Vorlegeteile the two groups above are arranged at an angle to each other and oriented. In addition, they are movable in directions which are at said angle to each other. Preferably, this angle is a right angle. This is especially true in the case of circular knitting machine with dial and knitting cylinder. In the case of a circular knitting machine with two knitting cylinders, this angle can also be a right angle or an angle deviating from a right angle. The advantage of this arrangement is that the presentation parts, when they are in passive position (retreat position), release the space between the hooks of the two needle contours.

A plane parallel to the flat sides of the presentation parts and thus to the channel walls of the guides of a group of the presentation parts is preferably parallel to a plane which is parallel to the flat sides of the needles and the channel walls of the needles. This also applies to the second group of assistants and needles. This is especially true in the case of a circular knitting machine with dial and knitting cylinder. This results in a clear and reliable construction. In the case of existing from two knitting cylinders circular knitting machine, the angle between the leadership of the presentation element and the leadership of its associated needle is about 45 degrees in a preferred embodiment, this angle is less than 45 degrees.

The presentation parts may alternatively be accommodated in the needle beds. In this case, for example, additional channels are provided for feed parts between needle channels. Alternatively, individual needle channels in place with needles Assembling parts are fitted. The master parts are then expelled further than the needles to bridge the distance between the two needle contours. In some cases, it may be sufficient to provide only in a needle bed Vorlegeteile. This in particular if the presentation parts can move the pile thread both pushing and pulling. In the preferred case, however, in this type of construction, both needle beds are equipped with presentation parts. Thus, the pile thread is moved by the respective Vorlegeteil only sliding. The presentation part can then be designed like a slender slider which has a notch for receiving the thread at its end face.

The presentation parts can be solid. However, they preferably have an end consisting of two lamellae. Alternatively, they may be formed as a whole of two lamellae which abut each other. The lamellae, for example thin steel sheets, preferably have the same matching contour. They can be loosely connected or connected together. The slats allow a retracting needle hook between them, where they can be spread slightly. This facilitates the yarn transfer from the Vorlegeteil to the needle.

Further details of advantageous embodiments of the invention will become apparent from the drawings, the description or claims.

• Figur 1 eine Rundstrickmaschine in aufs Äußerste schematisierter ausschnittsweiser Darstellung ihrer Nadelfonturen und einiger Vorlegeteile mit Gestrick,
• Figur 2 die Rundstrickmaschine nach Figur 1 mit ausgetriebenen Nadeln und vorgelegtem Polfaden in schematisierter Darstellung,
• Figur 3 und 4 weitere Arbeitspositionen der Rundstrickmaschine beim Verstricken des Polfadens,
• Figur 4a eine Detailausschnittsdarstelltung aus Fig. 4,
• Figur 5 Zungennadeln der Rippscheibe und Vorlegeteile in ausschnittsweiser Perspektivdarstellung,
• Figur 6 Zungennadeln des Strickzylinders und Vorlegeteile in ausschnittsweiser Perspektivdarstellung,
• Figur 7 eine Rundstrickmaschine mit Rippscheibe, Strickzylinder und Platinenring für die Vorlegeteile in schematisierter Darstellung,
• Figur 7a eine abgewandelte Ausführungsform einer Rundstrickmaschine mit Rippscheibe, Strickzylinder und Platinenring für die Vorlegeteile in schematisierter Darstellung,
• Figur 8 eine Rundstrickmaschine mit zwei zueinander koaxialen Strickzylindern und Platinenring für Vorlegeteile in ausschnittsweiser schematisierter Darstellung,
• Figur 9 Stricksysteme mit in die Nadelfontur integrierten Vorlegeteilen beim Fadeneinlegen und
• Figur 10 die Stricksysteme nach Figur 9 bei der Polfadenübergabe und der Maschenbildung.

In the drawings, embodiments of the invention are illustrated. Show it:

• FIG. 1 a circular knitting machine in extremely schematized fragmentary representation of their needle contours and some knitted pieces with knitted fabric,
• FIG. 2 the circular knitting machine after FIG. 1 with expelled needles and presented pile thread in a schematic representation,
• FIGS. 3 and 4 further working positions of the circular knitting machine when knitting the pile thread,
• FIG. 4a a Detailausschnittsdarstellung Fig. 4 .
• FIG. 5 Tongue pins of the dial and Vorlegeteile in a fragmentary perspective view,
• FIG. 6 Tongue pins of the knitting cylinder and presentation parts in a fragmentary perspective view,
• FIG. 7 a circular knitting machine with dial, knitting cylinder and sinker ring for the presentation parts in a schematic representation,
• Figure 7a a modified embodiment of a circular knitting machine with dial, knitting cylinder and sinker ring for the Vorlegeteile in a schematic representation,
• FIG. 8 a circular knitting machine with two coaxial with each other knitting cylinders and sinker ring for submission parts in a fragmentary schematic representation,
• FIG. 9 Knitting systems with Vorlegeteile integrated in the needle contour when threading and
• FIG. 10 the knitting systems after FIG. 9 at the pile thread transfer and stitch formation.

In FIG. 1 is as a section of a knitting machine 1, a first needle contour 2, consisting of individual, designed as latch needles 2a to 2h and a second needle contour 3, consisting of also formed as a reed needles 3a to 3h illustrated. The needles 2 a to 2 h of the first needle contour 2 are preferably offset by a half pitch against the needles 3 a to 3 h of the second needle contour 3. Further illustrated FIG. 1 a pile yarn transfer device 4, to which a first group 5 of first delivery parts 5a, 5b, 5c and a second group 6 of second delivery parts 6a, 6b, 6c belong. After this FIG. 1 merely illustrates a portion of the entire knitting system of the knitting machine, it is understood that the actual number of needles 2a to 2h, 3a to 3h and Vorlegeteile 5a to 5c, 6a to 6c is much larger than shown. In detail, if necessary, each needle 2 a to 3 h may be assigned a master part if a large number of pile thread legs are to be produced. However, it is also possible to manage with a lower number of submittals when fewer pile thread legs are to be produced.

This in FIG. 1 illustrated knitting system can be used both as a flat bed knitting system and as a knitting system of a circular knitting machine application. In the latter case, the needles 2a to 3h are received by the needle channels of knitting cylinders 7, 8, which are arranged at an axial distance and coaxial with each other, such as FIG. 8 illustrated. The presentation parts 5a to 6c of the groups 5, 6 are arranged in corresponding guides or channels of a sinker ring 9. This can be arranged in the region of the distance between the two knitting cylinders 7, 8 and have a slightly larger diameter than this.

The needles 2a to 3h are arranged parallel to one another around the circumference of the knitting cylinders 7, 8. They have feet 10, 11 which engage with drive means, with locks 12, 13 and serve to axially, i. E., The needles 2a to 3h upon rotation of the respective knitting cylinder 7, 8. to move in needle longitudinal direction. The needles 2a to 3h are thereby expelled and withdrawn, whereby the stitch formation takes place. As a needle 2a to 3h is almost any known latch needle with freely movable tongue. A separate tongue control may be provided, but is not required.

The sinker ring 9 preferably has a set of guides 14 in the form of mutually parallel narrow channels, which are adapted to receive the feed pieces 5a to 5c in a longitudinally displaceable manner for the feed members 5a to 5c of the group 5. The sinker ring 9 also has a set of further guides 15 which are adapted to receive the feed members 6a to 6c of the group 6 slidably along their longitudinal direction. The guides 14 of a group are parallel to each other. The guides 15 of the other group are also oriented parallel to each other. The guides 14, 15 of the two groups enclose an angle with each other, which according to the FIG. 8 in about 90 degrees. This results in an angle α of about 45 ° between the direction of movement of the needle 2a and the direction of movement of its associated Vorlegeteils 6a. The angle α between the needle 3a and the presented submission part 5a is also about 45 °.

Embodiments are also possible in which the angle α between the needle 3a and the presentation part 5a presented to it is preferably less than 45 degrees and the angle between the guides 14, 15 is thus an obtuse angle.

In a specific embodiment (not shown), it is possible to arrange the guide 14, 15 parallel to the knitting cylinders 7, 8, in particular their needle guides. They are thus aligned coaxially with each other and preferably integrally connected seamlessly. It is then possible to provide the presentation parts 5, 6 with a hook-like end with which then the pile thread in the direction of the needle 2, 3, in which it is to be inserted, is pulled and not pushed as described above, and thus submitted. With this arrangement, the movement with which the pile thread is inserted into the hook 25 of a needle 2, 3 is reversed in comparison to the above example. This can have advantages in the detection of the pile thread by the Vorlegeteile 5, 6 as well as when inserted into the hook 25 of the needles 2, 3. The pile thread is moved between the knitted surfaces not pushing but pulling.

The presentation parts 5a, 6a and all other Vorlegeteilen each drive means 16, 17 are assigned, which in FIG. 8 are indicated only schematically and may be formed, for example, by locks, in the feet of the submit parts 5a to 6c grip. If the locks are equipped with a lock cam and arranged stationary and the sinker ring 9 rotates synchronously with the knitting cylinders 7, 8, the delivery parts 5a to 6c are driven out and retracted in accordance with the shape of the associated cam curve. The expelled position of the respective presentation part 5a, 6a is in FIG. 8 illustrated by dashed lines.

In FIG. 7 is a circular knitting machine 1 'illustrated, which instead of an upper knitting cylinder 9 has a dial 18, which, like the knitting cylinder 7, 8, a needle bed forms. It has a number of radially arranged slots which form guides 19 for the respective needle 2a (to 2h) mounted therein. The needles 2a of the dial 18 are thus arranged essentially at right angles to the needles 3a to 3h of the knitting cylinder 8. Between the hooks of the needles of the dial 18 and the hooks of the needles of the knitting cylinder 8, a gap is present whose size or width determines the distance of the knitted surfaces of the spacer knitted fabric to be produced. The presentation parts 5a to 6c are in turn held in a sinker ring 9. The guide 15 of the Vorlegeteils 6a is aligned with the guide 19 of the needle 2a. Likewise, the other guides of the subordinate parts of the group 6 are aligned with the corresponding guides of the dial 18. The guide 14 of the submission part 5a is aligned with the guide 20 of the needle 3a. Accordingly, the other guides 14 of the subordinate parts of the group 5 are aligned with the corresponding guides of the knitting cylinder 8. As a result, the pile thread 24 is opposite the hook interior approximately at half the hook height. Thus, the pile thread 24 can be inserted through the Vorlegeteile 5, 6 in the hook interior means (not shown) in the form of slopes or ramps are provided. These insertion means can be formed both on the needles 2, 3 and on the Vorlegeteilen 5, 6. It is also possible, in addition to the translational movement described, to superimpose additional movement components on the presentation parts 5, 6, for example tilting movements in order to facilitate the transfer of the pile thread to the needles 2, 3. It is further possible, the circuit board ring 9, as in Figure 7a indicated to form in a different orientation, so that between the mutually associated guides of the needles and their associated Vorlegeteile an acute angle is formed.

In the FIGS. 1 to 4 As well as FIGS. 7 and 8, the sub-parts 5a to 6c have been illustrated only schematically. To further explain the physical training of the same is on the Figures 5 and 6 referenced, depending on the machine configuration Figure 7a is assumed. FIG. 5 illustrates the needles 2a, 2b, etc. of the dial and the presentation elements 6a, 6b, 6c (and others). As can be seen, the Vorlegeteile each consist of two blades 21, 22 which are formed as extending along the direction of movement, bounded by parallel edges strips of resilient steel. The two lamellae 21, 22 preferably have matching contours and are provided at their end with an angular cutout 23, for example, defines a right-angled corner and is rounded at its ends and in the middle. The angular cutout 23 serves to receive the pile thread 24. The pile thread 24 runs, for example, over the angular cutout 23 of the laying piece 6a. Following this, between the presentation part 6a and 6b through to the presentation part 5a, the needle contour 3, there via the angular cutout 28 and then between the assisting parts 5a and 5b back to the needle contour 2 via the angular cutout 23 of the submission member 5b. This change of the pile thread 24 between the needle contours 2 and 3 goes out of the Figures 5 and 6 not apparent. But he is indispensable for the connection of the two textile surfaces 29, 30. The two lamellae 21, 22 are held at a small distance from each other or are at low bias to each other. The pile yarn 24 The needles 2a to 2c can move with their respective hook 25 between the two slats 21, 22 belonging to one and the same laying element, as in FIG FIG. 5 illustrated by the needles 2a to 2c. The fins 21, 22 are spread apart slightly away from each other. The needle can then with her hook the pile thread 24th in the form of a half stitch, as in FIG. 5 is illustrated by the needle 2c and the hook 25.

FIG. 6 illustrates the knitting system according to Figure 7a by means of needles 3a, 3b, 3c, 3d (and others) associated with the knitting cylinder 8, as well as associated delivery parts 5a, 5b, 5c, etc. Preferably, the delivery parts 5a, 5b, 5c (and others) are to the delivery parts 6a, 6b, 6c identically formed. They in turn each have two slats 26, 27, which consist of strips of resilient steel and rest against each other without greater bias. The needles of the knitting cylinder can travel between these lamellae in order to take over the pile thread 24 lying in the terminal angular cutout 28.

The knitting machine 1 described so far operates as follows:

It is based on the embodiment according to FIGS. 1 to 4 referenced, which is essentially the configuration FIG. 8 corresponds to the description according to configurations according to FIG. 7 or 7a is applicable.

The needles 2a to 2h and 3a to 3h each work by being expelled and withdrawn. When driving out they let each of the loop held by the hook slide over the tongue on the needle shaft and catch a thread with the hook. When retreating slides on the needle shaft sitting stitch on which the fabric hangs to the tongue, closes it and thus slides over the closed hook off. This process is called knocking off. The closed hook pulls the previously taken thread through the cut stitch and thus forms a new stitch. This Operation takes place repeatedly both with the needles of the needle contour 2 and with the needles of the needle contour 3, as a result of which the knitted surfaces 29, 30 illustrated in each case hanging on the needle contours 2, 3 are formed. Not shown, however, that the knitted surfaces 29, 30 are connected by legs of the pile thread 24 together. How this is incorporated into the knit, illustrate the FIGS. 2 to 4 starting from FIG. 1 which first illustrates how the pile thread 24 lies in the angular cutouts 23, 28 of the laying parts 5a to 6c. The presentation parts 5a to 6c are preferably held at an angle to each other so that they stand with their angular cutouts 23, 28 on a common line, which occupies the pile thread.

If the pile thread 24 is now to form a leg or handle that spans between the knitted surfaces 29, 30, then FIG. 2 shows, the Vorlegeteile 5a, 6a as well as the Vorlegeteile 5b, 6b expelled, causing their angular cutouts 23, 28 from each other. At the same time, they approach a plane defined by the two needle contours 2, 3, ie the hooks of the needles 2a to 2h, 3a to 3h. The FIG. 2 FIG. 2 illustrates the presentation parts 5a, 6a in the furthest advanced position in which they span a pile thread leg 31. This is taken over at both ends by the respectively expelled needles 2a, 3a, which, like FIG. 2 further shows, preferably offset by half a pitch from each other. Furthermore, the needles 2b, 3b and 2c, 3c begin their expulsion movement, the stitches hanging on them open the tongues and slide over them on the tongue shaft. The presentation parts 5b, 6b also start to open a pile thread leg.

FIG. 3 illustrates the further progress of the knitting process. For the sake of clarity, the presentation parts 5a to 5c, 6a to 6c are merely indicated by arrows, as can be seen, the needles 2a, 3a additionally have threads 32, 33 for forming the stitches of the knitted surfaces 29, 30 and are included to form together with the pile thread 24 at a discount of the respective half-stitch to a new stitch. This process is in FIG. 4 completed, illustrating the needles 2a, 3a in the retracted position, wherein the pile thread 24 and the threads 32 and 33 are held in the hook. In the further course, when, for example, the needle 2a is expelled again, the pile thread 24 and the thread 32 slide over the inner edge of the tongue, which is then in reserve, on the needle shaft. If the needle 2 a expelled, a new thread 32 is inserted into the hook 25 to form the textile surface 29. When renewed withdrawal of the needle 2a is now by means of the Abschlagvorgangs from the thread 32 which is initially on the needle shaft and forms a semi-mesh, formed a new mesh. The pile thread 24 is also knocked off and incorporated as a tuck loop in the knit surface 29. This described procedure also applies correspondingly to the needle 3a and others. By incorporating the pile thread 24, as a tuck loop, in the knitted surfaces 29, 30, the distance between these two knitted surfaces 29, 30 is determined.

As can be seen, the expulsion of the needles of the two needle contours 2, 3 takes place in the manner of a continuous wave. In synchronism with this, the spread of the feed members 5a to 5c and 6a to 6c also takes place in the form of a continuous shaft. In both knitted surfaces 29, 30 of the pile thread 24 is involved as a tuck, the stitches are formed from the threads 32 and 33, respectively. The pile thread 24 forms between the two knitted surfaces 29, 30 back and forth Polfadenschenkel. In the presented embodiment, these connect all meshes. If fewer pile thread legs are to be provided, the presentation parts 5a to 6c are expelled less frequently or fewer presentation parts 5a to 6c are provided.

In the embodiment described thus far, it has been assumed that the presentation parts 5a to 5c form a first font and the presentation parts 6a to 6c form a second font which lie in a state of rest on a common line. In the activation or transfer state, on the other hand, the delivery parts 5a to 6c are respectively expelled to such an extent that the associated needles 2a to 3h can take over the pile thread 24 from the angular cutouts 23, 28. In the transfer position, the free ends of the delivery parts 5a to 6c overlap with the hooks of the driven-out needles.

The Figures 9 and 10 illustrate a modified embodiment based on a schematic diagram based on the basic configuration of a circular knitting machine with two knitting cylinders. In the needle contour 2, the subordinate parts of the group 6 are additionally accommodated, wherein these can be arranged alternately with the needles. The needles 2a to 2d are again latch needles. The Vorlegeteile 6a to 6c are formed as lamellae, which are provided at its end with an angular cutout. A yarn guide 36 serves to supply both the pile yarn 24 and another yarn 32 to the needles 2a to 2d and the supply parts 6a to 6c of the one knitting cylinder. Correspondingly, needles 3b to 3d (latch needles) and assisting parts 5b, 5c are also alternately arranged in the upper knitting cylinder. Also the knitting tools of the upper knitting cylinder pile yarn 24 'and another yarn 33 is supplied.

When the thread guide the needles are driven out so that the respective expelled needle detects both the pile thread 24 and the other thread 32. By contrast, the presentation element 6a is driven out so that it only detects the pile thread 24. This is in FIG. 9 illustrated below left. The procedure is the same with the needles and Vorlegeteilen the upper knitting cylinder. The presentation parts 6a to 6c thus keep the presentation thread in a zig-zag line above the retracted needles 2b to 2d. The same applies to the upper knitting cylinder.

The needles of the lower needle contour 2 form a knitted surface in the form of a knit tube. Likewise, the needles of the upper needle contour 3 form a knitted surface in the form of a knit tube, which is coaxial with the first-mentioned knit tube. Both knitted tubes are interconnected by pile threads. The preparation of the compound is in FIG. 10 illustrated. The Vorlegeteil 5b is driven out to the extent that the pole thread 24 'carried by him gets into the catching area of the opposite needle 2c, which catches the pile thread and above this the previously worn loop consisting of pile thread 24 and thread 32 abkägt.

This game is repeated with each submission.

A device according to the invention for producing a spacer knit can be designed in the form of a circular knitting machine with two knitting cylinders or with a knitting cylinder and dial. Between the two needle contours defined thereby a pile thread transfer device 4 is arranged, which has two groups 5, 6 of assisting parts, which are each movable from a rest position into a thread-catching position. In this case, the Vorlegeteile the one group to the hooks of the needles of the first needle bed and the Vorlegeteile the other group move to the hooks of the needles of the other needle bed. In this way, the production of spacer knits on circular knitting machines is possible, tongue needles can be used and the needle stroke is limited to a standard amount of less than 14 mm. The spacer fabric may have a thickness of significantly more than 14 mm, ie, a thickness that far exceeds the needle stroke.

LIST OF REFERENCE NUMBERS

1

knitting machine

2, 3

the needle bed

2a, 2a, 2c, 2d, 2e, 2f, 2g, 2h

needles

3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h

needles

4

Polfadenübergabeeinrichtung

5, 6

groups

5a, 5b, 5c

serving parts

6a, 6b, 6c

serving parts

7, 8

knitting cylinder

9

platinum ring

10, 11

feet

12, 13

Locks, drive devices

14, 15

guide

16, 17

driving means

18

dial

19, 20

guide

21, 22

slats

23

angle sections

24, 24 '

pile thread

25

hook

26, 27

slats

28

angle cut

29, 30

Knitted surfaces

31

Polfadenschenkel

32, 33

threads

34, 35

mesh

36

thread guides

Claims (19)

1. Device (1) for manufacturing a knitted spacer fabric, which has at least a first knitting surface (29) and at least a second knitted surface (30), extending between which is a pile thread (24), which connects the knitting surfaces (29, 30) to one another, while holding them at a distance,
   with a first group of needles (2a-h), which are disposed to be longitudinally displaceable in a first needle bed (7) and are connected to a drive means (12) for controlled longitudinal motion, and which form a first needle line (2),
   with a second group of needles (3a-h), which are disposed to be longitudinally displaceable in a second needle bed (8, 18) and are connected to a drive means (13) for controlled longitudinal motion, and which form a second needle line (3), characterised in that the device (1) has a first group (5) and a second group (6) of feed parts (5a-6h), wherein the feed parts (5a-5h) of the first group (5) are arranged at an angle to the feed parts (6a-6h) of the second group (6) and are movably disposed and are connected to a drive means (16, 17) for controlled motion, wherein the feed parts (5a-6h) have a function section, which is arranged to guide a pile thread (24), and wherein the feed parts (5a-5h) of the first group (5) are associated with the second group of needles (3a-h) in order to feed the pile threads to these, and the feed parts of the second group (6) are associated with the first group of needles (2a-h) in order to feed the pile threads to these.
2. Device according to claim 1, characterised in that the feed parts (5a-6h) are respectively movable between a passive position and a thread transfer position.
3. Device according to claim 1, characterised in that the feed parts (5a-6h) are disposed to be longitudinally displaceable.
4. Device according to claim 1, characterised in that the feed parts (5a-6h) are disposed in a separate bed (9).
5. Device according to claim 1, characterised in that the first needle bed (7) is a knitting cylinder.
6. Device according to claim 1, characterised in that the second needle bed (8) is a knitting cylinder.
7. Device according to claim 1, characterised in that the second needle bed (18) is a dial.
8. Device according to claim 5 or 6, characterised in that the feed parts (5a-6h) are disposed in a sinker ring (9), which is arranged concentrically to the knitting cylinder (8).
9. Device according to claim 1, characterised in that the sinker ring (9) has a group of first guides (14) for a first group (5) of feed parts (5a-5c) and a group of second guides (15) for a second group (6) of feed parts (6a-6c).
10. Device according to claim 9, characterised in that the guides (14) of the first group (5) and the guides (15) of the second group (6) are oriented at an angle to one another.
11. Device according to claim 1, characterised in that the guides (14, 15) of the two groups are respectively oriented so that they are directed at an angle of less than 45° towards the needle channels of the needle bed (7, 8, 18) with the needles they cooperate with.
12. Device according to claim 10, characterised in that the guides (14, 15) of the two groups (5, 6) are respectively oriented so that they are aligned parallel to the needle channels of the needle bed (7, 8, 18) with the needles they cooperate with.
13. Device according to claim 1, characterised in that the feed parts (5a-6c) are arranged in the first and in the second needle bed (7, 8).
14. Device according to claim 13, characterised in that to transfer the pile thread (24) onto the needles (2a-3h) of the opposite line (2, 3) the feed parts (5a-6c) are raised further than the needles (2a-3h).
15. Device according to claim 1, characterised in that the feed parts (5a-6c) respectively have two resilient gliders (21, 22) directing their flat sides towards one another.
16. Device according to claim 1, characterised in that the gliders (21, 22) define a needle penetration area between them.
17. Device according to claim 1, characterised in that the feed parts (5a-6c) have an angle cutout (23, 28) at their end for thread pick-up.
18. Device according to claim 1, characterised in that the needles (2a-3h) are latch needles.
19. Process for manufacturing a knitted spacer fabric, which has at least a first knitting surface (29) and at least a second knitted surface (30), extending between which is a pile thread (24), which connects the knitting surfaces (29, 30) to one another, while holding them at a distance, by means of at least two needle lines (2, 3) spaced from one another and by means of a transfer element line, with which the pile thread (24) is guided back and forth between two knitted surfaces (29, 30), whereas the knitted surfaces (29, 30) are generated in a knitting operation, wherein the pile thread (24) is alternately incorporated into the knitted surfaces (29, 30).

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