EP3795730B1 - Warp knitting machine and method for producing warp knitted fabric - Google Patents

Description

Warp knitting machines for producing warp knitted fabric have been known in many embodiments for decades. Usually, in warp knitting machines, a plurality of knitting tools are carried by bars and driven via bar carriers with lever shafts that extend in a machine width direction. The lever shafts are usually mounted in a machine frame that includes a plurality of center walls that are offset from one another in the machine width direction. The knitting tools used typically include hook needles, thread guide elements—such as, for example, hole needles or little laying tubes—, slides and knitting sinkers—such as, for example, enclosing knock-off sinkers, knock-off comb sinkers or piercing comb sinkers. The knitting tools are usually carried by bars, which in warp knitting machines are each driven by a lever shaft in such a way that, during operation, they pivot independently of one another in a plane transverse to the lever shafts - i.e. a plane that runs in the machine height and machine depth direction. The bars, which carry the thread guiding elements, are called guide bars and are additionally mounted and driven in such a way that they carry out an oscillating offset movement in the machine width direction superimposed on their pivoting movement. In each case one bar fitted with hook needles, at least one bar fitted with knitting sinkers and at least one guide bar fitted with thread guide elements are functionally connected to one another to produce a layer of warp-knitted fabric. Depending on the type of warp knitted fabric and warp knitting machine, additional bars and knitting tools can participate in this functional connection. Known versions of warp knitting machines are warp knitting machines in which the warp knitted fabric produced is drawn off approximately in a horizontal direction forwards by a fabric take-off device, and Raschel machines in which the warp knitted fabric produced is drawn approximately vertically downwards in a vertical direction by a fabric take-off device direction is pulled off the machine. A pull-off force acts on the warp-knitted fabric, which influences the properties of the warp-knitted fabric produced.

In the US6289703B1 a Raschel machine is shown which has guide bars which can be moved from an operating position ("knitting position") to a maintenance-friendly position via a lever device. In this maintenance-friendly position, the Raschel machine cannot be operated to produce knitted goods, but the thread guiding elements ("guide needles") arranged on the guide bars should be particularly easily accessible for this purpose. As a result, it should be possible to easily thread threads into the thread-guiding elements. Before the production of knitted goods, the guide bars must be brought back into their operating position after threading.

In DE10349417B3 describes a warp knitting machine for producing a spacer fabric, the guide bars of which can be adjusted in their basic position transversely to the machine width direction, which corresponds to a machine depth direction. For this purpose, the guide bars are arranged on the machine frame via a carrier that can be positioned in the machine depth direction by a central drive. When reducing or increasing the distance between the two webs of spacer fabric produced by shifting the hook needles in the machine depth direction, it should be possible to adjust the guide bar position to the position of the hook needles and to allow the thread guide elements to interact properly with the hook needles.

In DD120669 describes a device that serves to change the pivoting movement of the guide bars of a warp knitting machine. The guide bars are connected to two lever shafts via two carriers, which in turn are driven by a drive ram via a connection of levers. The position of the connection of the drive tappets to the lever can be changed using a screw connection with a slotted hole. As a result, both the amplitude and the speed of the pivoting movement carried out can be adjusted at the same time, with the course of the pivoting movement not changing in three-dimensional space. This should be advantageous in particular when changing the number of guide bars or the machine gauge, in order to be able to set the maximum possible working speed of the warp knitting machine in each case. The guide bars are connected to two lever shafts via several levers and a carrier, and therefore do not pivot around a fixed axis of rotation Lever shaft but about an instantaneous pole, which can shift during the pivoting movement depending on the kinematics of the construction of levers and carriers.+

In the DE29811470U1 a warp knitting machine is shown in which the guide bar lever shaft is mounted in rotationally adjustable eccentric bushings in the machine frame. By turning the eccentric bushings, the axis of rotation of the lever shaft can be adjusted relative to the machine frame in order to change a basic position of the guide needles (hole needles) relative to the knitting needles.

The production of warp-knitted fabrics with compositions of different diversity - i.e. warp-knitted fabrics that comprise, for example, different combinations of thread materials, a different number of threads per stitch, different stitch constructions and/or a different combination of stitch constructions - may require a different number of guide bars or to use a different warp knitting machine - for example a Raschel machine instead of a warp knitting machine.

So far, it has been known to produce both four-bar warp-knitted fabric, which requires four guide bars, and warp-knitted fabric, which requires fewer than four guide bars, in different batches on a warp-knitting machine with four guide bars. With the number of guide bars, however, the optimal pivoting movement of the yarn guide elements relative to the hook needles and the optimal pivoting movement of the hook needles also change in order to ensure the fastest, most efficient and error-free stitch formation possible. The pivoting movement of the hook needles is designed in such a way that the hook needles make approximately vertical up and down movements during the knitting process. For example, in a warp knitting machine with four guide bars, the pivoting movement of the yarn guide elements as well as the pivoting movement of the hook needles is longer than in a warp knitting machine with two guide bars. If two-bar warp-knitted fabric is now produced on a warp knitting machine with four guide bars, the thread guide elements and the hook needles have to travel a longer distance in their pivoting movement than on a warp knitting machine with only two guide bars, and the knitting speed is slower as a result. It may also be necessary to adapt the spatial course of the pivoting movement in order to be able to optimally adapt the effective speed to the number of guide bars used. Therefore, warp knitted fabrics that require a different number of guide bars to produce have hitherto been used usually manufactured at optimum knitting speed on different warp knitting machines. Furthermore, there are warp knitted goods that can only be produced on Raschel machines or only on warp knitting machines because of their composition, especially because of their stitch binding and the combination of stitch bindings. For example, a warp-knitted fabric with a high proportion of fringes - i.e. with a stitch binding in which a thread is inserted into the same hook needle in several rows of stitches in a row and therefore has no connection to the neighboring wale - cannot be produced on a warp-knitting machine and requires the Use of a Raschel machine.

The present invention is therefore based on the object of specifying a warp knitting machine which enables successive production of batches of warp knitted fabric with compositions of different diversity on a single warp knitting machine.

The object is achieved according to the invention by the preambles and the characteristics of claims 1 and 11. The relative position of the lever shaft, with which at least one guide bar can be driven, to the lever shafts, with which at least one further bar can be driven, is adjustable in the machine height and/or machine depth direction of a warp knitting machine. In order to change the diversity of the composition of the manufactured web of warp-knitted fabric, this relative position is changed in the machine height and/or machine depth direction.

Thus, with an increase in the number of guide bars, the course of the pivoting movement of the yarn guide elements can be adjusted relative to the operative movement of the hook needles. For example, on a machine with four guide bars, the pivoting movements of the yarn guide elements and the hook needles can be optimally matched to the number of guide bars. If a textile is now to be produced with the same machine that requires the use of two guide bars, it was not possible on previous machines to optimally adjust the pivoting movement of the thread guide elements and the hook needles to the reduced number of guide bars; the hook needles can, for example, perform a shorter pivoting movement on a warp knitting machine with only two guide bars, which increases the knitting speed. By adjusting the relative position of the lever shaft of the guide bars in machine heights and / or machine depth direction, the pivoting movement of the yarn guide elements to the changed pivoting movement Hook needles can be adjusted. Furthermore, for example when the warp knitting machine is switched from a warp knitting machine to a Raschel machine, the relative position of the lever shaft that drives the guide bars can be adjusted in such a way that the pivoting movement of the thread guide elements at the level of the hook needles runs largely in the machine depth direction, whereas the pivoting movement of the thread guide elements at the level of the hook needles in the case of a warp knitting machine has comparably large directional components in the machine height and machine depth direction with regard to their amount.

It is possible to use the teaching according to the invention on all types of warp knitting machines. However, it appears advantageous to apply the teaching according to the invention to warp knitting machines which are only suitable for producing a single layer of fabric (for example no double-bed Raschel machines or warp knitting machines which are suitable for producing a spacer fabric with two layers of fabric). As a rule, such machines only have a lever shaft that is operatively connected to a bar that carries hook needles - that is, it transmits torque to them. A bar that carries hook needles is also called a needle bar in the following. It is advantageous if the various bars of such a machine work together to produce one layer of goods. On the other hand, in double-layer Raschel machines, two layers of fabric and spacer fabrics are produced with these two layers of fabric. Several fabric webs that are simultaneously produced side by side on a warp knitting machine in machine width direction still correspond to one fabric layer if all hook needles involved in the knitting process are driven by a lever shaft about the same axis of rotation.

There are further advantages if the angular range of the pivoting movements of the lever shaft, with which the at least one guide bar is driven, can be adjusted. With the angular range of the pivoting movement, the position and length of the pivoting movement can be adjusted on a circle with a fixed pivoting radius around the axis of rotation of the lever shaft. It is therefore advantageous, particularly when the number of guide bars is changed, to adapt the angular range of the pivoting movement. It is also advantageous to adapt the angular range of the pivoting movement when changing from automatic warp knitting to Raschel machine fabric - or vice versa - in such a way that the pivoting movement for Raschel machine fabric at the height of the hook needles runs largely in the machine depth direction, whereas the pivoting movement at Warp knitting machine goods have comparable directional components in the machine height and machine depth direction at the height of the hook needles. It is quite possible to carry out such an adjustment with gears, such as by switching on one or more gears. This also applies if this "laying shaft" is not assigned an individual individual drive, but instead the necessary torque comes from a central drive, for example, or a drive for at least two shafts. The lever shafts assigned to the other bars can also advantageously experience a change in the angular range of their pivoting movements. In connection with all exemplary embodiments of the invention, it should be advantageous if at least two drives are provided. It is of additional benefit if one of these drives is assigned to the at least one guide bar. The other drive can advantageously drive the remaining bars. However, several drives can also be assigned to the remaining bars, for example one drive for each bar. As will be discussed below, one advantageous way of controlling a plurality of lever shaft drives is to provide one or more control devices that control the drives.

According to the invention, a warp knitting machine has a machine frame which carries the lever shafts and which comprises a machine head and a machine base, the machine head and the machine base being adjustable relative to one another in the machine height direction and/or in the machine depth direction. The machine head comprises at least the lever shaft of the guide bars and the components that can be driven by it. For example, the lever shaft of the guide bars can be accommodated by the machine head so as to be rotatable about its axis of rotation. It is an advantageous embodiment if the lever shaft of the guide bars is designed to be rotatable about its axis of rotation by means of a bearing, with the machine head accommodating the bearing, which comprises at least two bearings.

An advantageous embodiment of the invention is a warp knitting machine whose machine head comprises at least two upper center walls offset parallel to one another in the machine width direction and whose machine bottom part comprises at least two lower center walls offset parallel to one another in the machine width direction. It is advantageous if the upper middle walls and lower middle walls comprise bearings, with at least two bearings of different middle walls forming at least one bearing for at least one lever shaft. Furthermore, it is advantageous if ever an upper Central wall is connected to a lower central wall in such a way that the relative position of the central walls can be adjusted to one another. For example, an upper middle wall can be connected to a lower middle wall by a screw connection, the screw connection comprising at least one screw and/or fitting screw, at least one through hole or one slot and at least one threaded hole. Instead of fitted screws, it is also advantageous to use screws that are functionally connected to at least one dowel pin. In this way, the manufacturer of such warp knitting machines has advantages in terms of production costs and storage costs, since such a variable machine makes the construction of a large number of variants superfluous and fewer different types of components are required in order to be able to produce different types of warp knitting machines.

A warp knitting machine is advantageous which includes means for adjusting the relative position between parts of the machine frame--for example the upper part of the machine and the lower part of the machine. A particularly advantageous means of adjusting the relative position is spacer plates arranged between the parts of the machine frame. The thickness of the spacer plates, which extends in the machine height direction, determines the relative position between the parts of the machine frame in the machine height direction. It is also advantageous to arrange at least two spacer plates one above the other between parts of the machine frame in order to adjust the relative position between the parts of the machine frame by the sum of the thicknesses of the at least two spacer plates. It is thus possible, by combining at least two existing spacer plates, to set a greater distance between the upper part of the machine and the lower part of the machine, without requiring spacer plates of a greater thickness. Another advantageous means of adjusting the relative position between the machine head and machine base is a screw connection that includes at least one screw, at least one slot whose longitudinal axis extends in the machine depth direction, and at least one threaded hole. For example, the machine base can include at least one threaded hole and the machine head and the spacer plates can each include at least one elongated hole for each threaded hole. By shifting the machine head in the direction of the longitudinal axis of the elongated holes - ie in the machine depth direction - it is possible to adjust the relative position of the machine head to the machine base in the machine depth direction. It is particularly advantageous if the upper part of the machine and/or the lower part of the machine has a scale in machine height and/or machine depth direction, which enables precise and reproducible adjustability of the relative position. Another advantageous means of adjusting the relative position between the machine head and machine base is a rail connection. A form-fitting rail connection is advantageous. A rail connection that enables adjustability in the machine depth direction and/or machine height direction and is play-free in the machine width direction is particularly advantageous. Also advantageous is a rail connection that includes a device for locking the relative position between the upper machine part and the lower machine part. A warp knitting machine is also advantageous which comprises at least one electric motor which drives the machine head in its adjustment movement in the machine height and/or machine depth direction.

An advantageous embodiment of the invention is a warp knitting machine whose machine head comprises at least one offset drive, which drives the at least one guide bar for its oscillating offset movement in the machine width direction. The advantage here is that it is not necessary to adjust the connection between the at least one offset drive and the at least one guide bar in order to adjust the relative position between the upper machine part and the lower machine part, since the position of the at least one offset drive relative to the at least one guide bar changes does not change. The set-up time for adjusting the relative position between the machine head and machine base can be reduced as a result.

It is advantageous if the lever shafts are each assigned a pivoting drive for their respective pivoting movement, with the pivoting drive preferably comprising an electric machine. The swivel drive is used to drive the lever shafts to rotate around their axes of rotation. If each lever shaft is assigned its own swivel drive, a complex central gear that connects all lever shafts to a central drive motor can be omitted. The construction and maintenance costs as well as the complexity of the warp knitting machine are reduced.

It is also advantageous if at least one pivoting drive comprises a linear stepping motor. It is particularly advantageous if a slider-crank mechanism connects a linear stepping motor output shaft to one of the lever shafts, the slider-crank mechanism comprising a drive lever and a joint which is eccentrically connected to the lever shaft. The slider crank mechanism converts a linear drive movement into a rotary movement of the lever shaft around its axis of rotation. The great advantage of the slider-crank mechanism is that it can be carried out with as little play as possible even when changing the direction of movement and thus transmits the drive movement without loss of movement components.

It is also advantageous if at least one swivel drive includes a rotary stepping motor. It is particularly advantageous if a belt transmission connects a rotary stepping motor output shaft to one of the lever shafts. For example, the lever shaft can be driven by the rotary stepper motor by means of a toothed belt, with toothed belt pulleys being arranged on the rotary stepper motor output shaft and the lever shaft, which are positively connected to the toothed belt. Thanks to the form-fitting connection, the drive movements are transmitted without slip and thus without any loss of movement components.

An advantageous embodiment of the invention is a warp knitting machine whose machine head comprises at least one pivoting drive for the lever shaft of the at least one guide bar. It is thus possible to adjust the relative position between the upper machine part and the lower machine part without adjusting the connection between the swivel drive and the lever shaft of the at least one guide bar, since the position of the at least one swivel drive relative to the lever shaft of the at least one guide bar does not change. In this way, the set-up time for adjusting the relative position between the machine head and machine base is reduced. For example, if the swivel drive is connected to the lever shaft by means of a toothed belt, the toothed belt would have to be replaced with a toothed belt with a correspondingly adapted length each time the relative position between the machine head and base is adjusted if the swivel drive is not accommodated by the machine head.

Also advantageous is a warp knitting machine whose multiple pivot drives include electric machines. These electric machines can advantageously be controlled by an electronic control device. The electronic control device may include means for generating and amplifying signals, storage devices and power electronics. As a rule, it should be a machine computer that provides control signals. In the case of normal electrical machines, these will control frequency converters or suitable power electronics such as an amplifier circuit (motor driver) that is suitable for controlling stepper motors. Finally, the electric machines are supplied with current of suitable strength, voltage, frequency or signal form for the appropriate movement profiles. In this way, the electronic controller controls the drive movement of the electric machines, with the warp knitting machine converting the drive movement of the electric machines into a knitting movement of the knitting tools, and the knitting tools are thus driven by the electric machines.

An electronic control device is advantageous, which is set up to control the electric machines in such a way that they drive the knitting tools driven by them in accordance with certain predefined movement profiles. Movement profiles that are programmable are particularly advantageous. It is also advantageous to combine movement profiles in groups, with each group comprising a movement profile for each knitting tool of the warp knitting machine and the movement profiles being matched to one another such that the knitting tools perform matching knitting movements during the same period of time. The specification of movement profiles thus enables the knitting movements of the knitting tools to be controlled in a targeted manner. When the relative position of the upper part of the machine to the lower part of the machine is adjusted, for example, the knitting movement of the thread guide elements can be readjusted to the relative position and knitting movement of the other knitting tools, and the warp knitting machine can be set more variably for the production of batches of warp knitted fabric with compositions of different diversity.

For the successive production of batches of warp knitted fabric with compositions of different diversity, a method is advantageous in which at least two different swivel drives are used, of which the first drives at least the guide bar and the second drives at least one other bar and the movement of these two swivel drives is controlled in such a way that the thread guiding elements of the guide bar and the needles of the other bar execute coordinated knitting movements. By using at least two different pivoting drives, it is possible to control the pivoting movement of different bars independently of one another and thus to be able to coordinate the active movements of the bars with one another. If the relative position of the lever shaft, which drives the guide bar, has to be changed due to a change in the batch of warp knitted fabric, the knitting movements of the knitting tools can be coordinated in a more variable manner.

It is particularly advantageous if the at least two pivoting drives are actuated on the basis of stored movement profiles which are individually matched to the composition of the respective batch. Each movement profile forms a specific knitting movement of a knitting tool. It is advantageous to specify the movement profile as an input variable when setting up the warp knitting machine and to select and program it according to the warp knitted fabric to be produced.

The movement profiles of the knitting tools must be coordinated with one another, depending on the selected composition of the warp-knitted fabric produced, so that the knitting tools work together synchronously to produce the desired warp-knitted fabric. For the production of a warp knitted fabric of a specific composition, there is thus a group of coordinated movement profiles, which includes exactly one movement profile for each knitting tool. It is advantageous to store at least two groups of movement profiles coordinated with one another in a storage device and to use these depending on the selected composition of the warp-knitted fabric produced. When setting up the warp knitting machine, the appropriate movement profile can be selected and does not have to be reprogrammed.

A warp knitting machine is advantageous which, for stitch formation, includes a knitting sinker—hereinafter also simply called sinker—which is universally suitable both for the production of Raschel fabrics and for the production of automatic warp knitting fabrics. Such a board is described below. A sinker for a warp knitting machine is advantageous, which has a knock-over edge, a holding-down edge and an enclosing edge, the knock-over edge extending in a width direction and at least in sections in a longitudinal direction of the sinker and a height direction of the sinker pointing perpendicularly upwards from the surface of the knock-over edge, the holding-down edge is arranged opposite the drop-off edge at a distance in the height direction and the enclosing edge delimits and connects the drop-off edge and the hold-down edge to the rear in the longitudinal direction, with a contact edge adjoining the drop-off edge at a drop-off edge transition point and a supporting edge adjoining the contact edge at a supporting edge transition point, wherein the support edge extends at least in sections approximately in the longitudinal direction and is arranged in the height direction below the knock-off edge. A sinker is particularly advantageous in which the transition point of the support edge from the transition point of the deflection edge to is spaced at least four times as far apart in the vertical direction as in the longitudinal direction. Advantageously, the knock-off edge is straight and the knock-off edge extends entirely in the longitudinal direction. However, the deflection edge can also run in a curve, so that the deflection edge runs in the longitudinal direction only in sections, possibly even only over an infinitesimally small section. Then the longitudinal direction can be determined by a tangent drawn on the lip midway between a lip transition point and the point over which the hold down edge terminates forward. The width direction, length direction and height direction of the board together form a rectangular coordinate system which is "fixed to the board"; it can therefore move together with a possible movement of the sinker relative to the previously introduced coordinate system of the warp knitting machine, consisting of machine depth direction, machine height direction and machine width direction, and in particular also rotate about the axis of the machine width direction. In all operating states of the warp knitting machine and the sinker, however, the width direction of the sinker corresponds to the machine width direction.

Sinkers having a knock-over edge, a hold-down edge, and an enclosing edge are typically used in a warp knitting machine. Due to the additional arrangement of a correspondingly designed contact edge and a support edge, which adjoin the knock-over edge, the sinker is set up for knocking over (fringe) stitches when the pull-off device of the warp knitting machine pulls in the vertical direction. Thus, a warp knitted fabric that is only produced on a Raschel machine can also be produced with the sinker. The conversion from automatic warp knitting to Raschel fabric can even take place without the knitting tools (such as sinkers, but also needles) having to be exchanged.

The circuit board can advantageously be stamped from a steel strip like conventional circuit boards. The thickness direction of the steel strip is then the width direction of the blank. The sinker can be set up to be moved in the longitudinal direction for stitch formation along the knock-over edge, as is usual for sinkers with a knock-over edge, hold-down edge and enclosing edge. The support edge can be arranged parallel to the knock-off edge. However, the support edge can also be arranged at an angle of between 0° and 25° to the knock-off edge. The theoretical point of intersection between the support edge and the knock-off edge is then preferably in front of the sinker in the longitudinal direction. The angle between the Contact edge and the support edge is preferably 90 °. A knock-off strip which has an advantageous rectangular cross-section can thus be supported on the supporting edge. Furthermore, a knock-off tape supported in this way can be placed against the contact edge, so that it is pressed against the contact edge by a pull-off force acting on the warp-knitted fabric. The pull-off force can act downwards in the warp knitting machine in its vertical direction. A distance between a support edge transition point and a knock-off edge transition point that is at least four times greater in the height direction than in the longitudinal direction results in the contact edge of the sinker or the outer surface of a sinker arrangement in the machine being arranged approximately in the vertical direction of the machine. The contact edge or outer surface can be inclined to the vertical direction of the machine by a maximum of 25° or, for example, 15°, 10° or 5° in such a way that areas of the contact edge or the outer surface that are further down are further downwards in the horizontal direction protrude in front than areas lying further up in the vertical direction. In the following, a vertical deduction is therefore also understood to mean a deduction direction that deviates from the vertical by the stated angle. The circuit board can have a surface coating.

Advantageously, the support edge transition point is spaced between 3 mm and 10 mm from the impact edge transition point in the height direction. The distance can have any value in between, for example 5mm or 6.5mm. It is also advantageous if the contact edge comprises a holding device which is designed as a depression and/or elevation in sections of the contact edge. A greater distance between the supporting edge transition point and the deflection edge transition point can provide more installation space for attaching a holding device to the contact edge.

It is particularly advantageous if the supporting edge ends a maximum of 2 mm forwards in the longitudinal direction from the supporting edge transition point. The supporting edge can have an extension of at most 2 mm in the longitudinal direction, for example 0.7 mm or 1 mm. Any values up to 2 mm are advantageous.

There are further advantages if the knock-off edge and the contact edge enclose an angle between 90° and 115°. An angle between 95° and 110° is particularly preferred.

It is advantageous if the knock-off edge protrudes forwards by a maximum of 2 mm over the hold-down edge in the longitudinal direction. With coarse fineness (machine pitch) or large-meshed knitted fabric, the knock-off edge can advantageously protrude forwards by a maximum of 5 mm in the longitudinal direction forwards over the hold-down edge. In a particularly advantageous manner, the knock-off edge can protrude forwards beyond the hold-down edge in the longitudinal direction by values between 1 mm and 5 mm or by values between 1.5 mm and 4 mm, for example 2 mm, 2.5 mm or 3 mm. A knock-off edge that extends only 2mm or less further forward than the hold-down edge allows the warp-knitted fabric to be drawn off in the vertical direction of a warp-knitting machine downwards without having to cover a long distance through the sinker or sinker arrangement for stitch formation.

An advantageous embodiment of the warp knitting machine according to the invention comprises a sinker arrangement. A sinker arrangement is advantageous which has a large number of the sinkers described above, which are arranged congruently in a row at a constant distance in the width direction, and at least one knock-off belt which rests on the support edge and on the contact edge of at least a subset of the large number of sinkers and the distance bridged in the width direction between at least two sinkers and whose outer surface is opposite to the surface with which the knock-off band abuts against the contact surface of the sinker. The sinker arrangement is characterized in that a vertical upper end of the outer surface of the knock-down belt is at least four times as far apart in the vertical direction as in the longitudinal direction from a lower end in the vertical direction of the outer surface of the knock-down belt.

The knock-off tape can be used, among other things, to knock off fringed stitches that would otherwise slip between the sinkers. Due to the position of the knock-off belt based on the vertical direction, a warp-knitted fabric can be drawn off approximately in the vertical direction of the warp knitting machine, sliding past the outside of the knock-off belt. A pull-off direction in the machine direction, horizontally to the front, is of course also possible. In particular with a vertical deduction, the deduction tape is pressed by the warp knitted fabric against the supporting edge and the contact edge of the sinkers. The knock-off strip can thus be connected sufficiently securely to the sinkers by means of a detachable attachment.

Advantageously, the knock-off band may have a substantially rectangular cross-section that is substantially constant over its widthwise extension. Such a tape can be procured inexpensively and reproducibly mounted over the entire extent of the circuit board arrangement in the width direction. the The width direction of the board corresponds to the width direction of the board assembly. The width direction of the sinker assembly is approximately the width over which warp knit fabric can be produced on the warp knitting machine. Warp knitting machines are usually between 1.28 meters and 7 meters wide, typically several meters, for example about 4 meters. The knock-off conveyor can bridge the entire width of the machine. However, the knock-off strip can also comprise several parts over the width direction, which then extend over the entire width in total. The circuit board arrangement preferably comprises a number of sub-arrangements of circuit boards or modules with circuit boards. The knock-off belt can consist of a wear-resistant material such as hardened steel and/or be provided with a wear-resistant coating. The knock-off band preferably has a smooth surface, advantageously with rounded edges, so that the quality of the warp knitted fabric passing by is not affected.

Advantageously, the knock-off belt can be arranged flush or set back in the height direction relative to the knock-off edge of the at least one subset of the plurality of sinkers. This ensures that the warp knitted fabric can be easily pulled over the cut-off tape when it is pulled off.

The knock-off strip can advantageously have at least one extension in the longitudinal direction like the supporting edge. As a result, the warp knitted fabric cannot get caught at the transition to the support surface when sliding along the outer edge of the knock-off belt. A support edge that is set back from the outer edge of the knock-off belt is particularly advantageous.

Advantageously, for its detachable attachment to the at least one subset of the plurality of sinkers, the knock-off strip can interact with at least one holding device of a contact edge of a sinker of the at least one subset of the plurality of sinkers. Advantageously, the cut-off band can have a connecting means which is fastened to the cut-off band and is detachably fastened to the holding device of the contact edge. The connecting means can be glued to the tee band, for example. The connecting means can be clipped to the holding device of the contact edge, for example. The connecting means can also be attached to the knock-off tape by other means than by gluing. The connecting means can also be in one piece with the knock-off strap. The connecting means can be a plastic profile. The connecting means can be clipped into a recess on the contact edge of the circuit board. The depression can have a cross section which at least partially corresponds to the cross section of the connecting means or can accommodate a section of the connecting means under tension. With regard to the function of the detachable attachment, all known options can be used.

Advantageously, the connecting means can have at least one spacer element, which adjusts the distance in the width direction between the boards at their front end. The circuit board arrangement can also be stabilized by the connecting means. The spacer element or the spacer elements can be elevations of the connecting means that occur regularly. Thus, the uniformity of board arrangement can be secured, and a socket serving this purpose is unnecessary. However, it is also advantageous if the adjustment of the distance between the front ends of the boards is effected, as is known, by means of a socket. As is known, such a version can be cast on. The mount can then also pass through holes in the circuit board or encompass projections on the circuit board.

• mindestens eine Platinenanordnung,
• einen Maschenbildungsbereich, in dem Maschen durch Abschlagen an der Abschlagkante oder am Abschlagband der Platinenanordnung gebildet werden, und
• eine Warenabzugsvorrichtung zum Abziehen der Kettenwirkware aus dem Maschenbildungsbereich.

Weiterhin vorteilhaft ist eine Kettenwirkmaschine, deren Warenabzugsvorrichtung zum Maschenbildungsbereich derart einstellbar eingerichtet ist, dass die Kettenwirkware in mindestens einer ersten vorgebbaren Einstellung im Wesentlichen in einer horizontal nach vorne orientierten Richtung und in mindestens einer zweiten vorgebbaren Einstellung im Wesentlichen in einer vertikalen Richtung nach unten abgezogen werden kann. Die horizontal nach vorne orientierte Richtung entspricht dabei weitestgehend der Maschinentiefenrichtung. Die vertikale Richtung entspricht der Maschinenhöhenrichtung. Kettenwirkware wird auf Kettenwirkautomaten horizontal nach vorne abgezogen. Kettenwirkware wird auf Raschelmaschinen vertikal nach unten abgezogen. Der Maschenbildungsbereich erstreckt sich in Form eines schmalen Bandes über die ganze Breite der Kettenwirkmaschine und hat in der vertikalen Richtung der Maschine und in der horizontalen Richtung nach vorne oder hinten der Maschine nur eine sehr begrenzte Ausdehnung. In bekannten Kettenwirkmaschinen, in denen die Wirkwerkzeuge über ein zentrales Getriebe (Kurbelkasten) angetrieben werden, ist die Maschenbildung nur in einem eng umgrenzten Raum möglich. Dieser ist durch die vom zentralen Getriebe vorgegebenen Bewegungsabläufe festgelegt.A warp knitting machine according to the invention which has at least the following features is also advantageous:

• at least one circuit board arrangement,
• a stitch formation area in which stitches are formed by knocking over at the knockover edge or on the knockover belt of the sinker arrangement, and
• a fabric take-off device for taking off the warp knitted fabric from the stitch-forming area.

Also advantageous is a warp knitting machine whose fabric take-off device is set up so that it can be adjusted in relation to the stitch-forming area in such a way that the warp-knitted fabric is taken off essentially in a horizontally forward-oriented direction in at least a first predeterminable setting and essentially in a vertical direction downwards in at least one second predeterminable setting can. The horizontally forward-oriented direction largely corresponds to the machine depth direction. The vertical direction corresponds to the machine height direction. Warp knit fabric is drawn off horizontally to the front on warp knitting machines. Warp knit fabric is drawn off vertically downwards on Raschel machines. The knitting area extends in the form of a narrow band across the entire width of the warp knitting machine and has forward or backward in the vertical direction of the machine and in the horizontal direction of the machine only a very limited extent. In known warp knitting machines, in which the knitting tools are driven via a central gear (crankcase), stitch formation is only possible in a narrowly defined space. This is determined by the movements specified by the central gear.

The warp knitting machine can be used universally for the production of automatic warp knitting and Raschel machine goods due to the design of the sinker arrangement and the adjustability of the fabric take-off device, for which different sinkers or sinker assemblies would otherwise have to be procured and set up. After appropriate adjustment or conversion of the fabric take-off device and the relative position of the machine head, a completely different warp knitted fabric can be produced, preferably without changing the knitting tools.

As is usual with warp knitting machines, the sinker arrangement can be moved along an arcuate path—in the sense of a pivoting movement. The arcuate web can enclose the horizontal direction, ie the machine depth direction, towards the front of the warp knitting machine. Front is the direction from which a warp knitting machine is usually operated and in which the warp knitting machine fabric is drawn off. The knock-over edge and thus the longitudinal direction of the sinkers of the sinker arrangement can at least temporarily be arranged parallel to the horizontal direction of the warp knitting machine during stitch formation. Preferably, at least at the point in time after the stitch has been knocked off, the knock-over edge is inclined forwards by a maximum of 10° if it is not parallel to the horizontal. Also, the sinker assembly cannot move during stitch formation. During stitch formation, the needle arrangement can follow a curved path—in the sense of a pivoting movement—as is usual with warp knitting machines. The arcuate web may include the vertical direction of the warp knitting machine, that is, the machine height direction. The elongate needle shafts can be aligned at least approximately parallel to the vertical at least at times during stitch formation. The needles can deviate from the vertical alignment by a maximum of 10° and are then preferably tilted backwards with their hook. The needles are preferably less inclined to the vertical than the outer edge of the sinker belt of the sinker assembly.

It is also advantageous if at least one first roller of the goods take-off device, which is arranged closest to the stitch-forming area, can be driven and is set up to be reversible in its direction of rotation. In this way, the take-off angle can be set as best as possible and the accessibility of the stitch formation area is retained.

Fig. 1

Figur 1 zeigt eine Kettenwirkmaschine 26, die ein Maschinenoberteil 1 und ein Maschinenunterteil 2 umfasst.

Fig. 2

Figur 2 zeigt die Kettenwirkmaschine 26 aus Figur 1 in einer anderen Ansicht. Es sind ein Maschinenbett 14, mehrere obere Mittelwände 12 und untere Mittelwände 13, sowie ein Schwenkantrieb 15 und ein Versatzantrieb 16 dargestellt.

Fig. 3

Figur 3 zeigt einen Schnitt A-A durch die Kettenwirkmaschine 26 im Bereich von zwei Abstandsplatten 10 zwischen Maschinenoberteil 1 und Maschinenunterteil 2.

Fig. 4

Figur 4 zeigt den Schwenkantrieb 15 einer Hebelwelle 3, 4, 5, 6, der einen Linearschrittmotor 18, einen Antriebshebel 20 und ein Gelenk 21 umfasst.

Fig. 5

Figur 5 zeigt den Schwenkantrieb 15 einer Hebelwelle 3, 4, 5, 6, der einen Drehschrittmotor 22 und ein Umschlingungsgetriebe 24 umfasst.

Fig. 6

Figur 6 zeigt schematisch die Position der Hebelwelle 3 relativ zu einer Hakennadel 27 und mehreren Fadenführelementen 9 der Kettenwirkmaschine 26, wenn sie nach dem Prinzip eines Kettenwirkautomaten arbeitet.

Fig. 7

Figur 7 zeigt schematisch die Position der Hebelwelle 3 relativ zu einer Hakennadel 27 und mehreren Fadenführelementen 9 der Kettenwirkmaschine 26, wenn sie nach dem Prinzip einer Raschelmaschine arbeitet.

Fig. 8

Figur 8 zeigt in einer symbolischen Darstellung ein vorderes Ende einer Platine 101 in einer Ansicht in Breitenrichtung B.

Fig. 9

Figur 9 zeigt in einer symbolischen Darstellung beispielhaft zwei Platinen 101 einer Platinenanordnung 110 mit einem Abschlagband 111 in einer Ansicht von schräg oben und vorne.

Fig. 10

Figur 10 zeigt symbolisch eine schräge Ansicht auf einen Abschnitt eines Abschlagbandes 111 mit Verbindungsmittel 113 und Abstandselement 114.

Fig. 11

Figur 11 zeigt die relevanten Komponenten einer Kettenwirkmaschine 26 in einer symbolischen Ansicht in Breitenrichtung bei horizontaler Einstellung der Warenabzugsvorrichtung 115.

Fig. 12

Figur 12 zeigt die relevanten Komponenten einer Kettenwirkmaschine 26 in einer symbolischen Ansicht in Breitenrichtung bei vertikaler Einstellung der Warenabzugsvorrichtung 115.

Fig. 13

Figur 13 zeigt in einer gemeinsame Darstellung von Fig. 6 und Fig. 11 die Anordnung zuvor beschriebener Elemente in einer Konfiguration nach dem Prinzip eines Kettenwirkautomaten.

Fig. 14

Figur 14 zeigt in einer gemeinsame Darstellung von Fig. 7 und Fig. 12 die Anordnung zuvor beschriebener Elemente in einer Konfiguration nach dem Prinzip einer Raschelmaschine.

A warp knitting machine is particularly advantageous in which at least a second roller of the fabric take-off device, which follows the first roll, is below the first roll in the first predeterminable setting of the fabric take-off device in the vertical direction and above in the second predeterminable setting of the fabric take-off device in the vertical direction the first roller is set up to be arranged. In this way, the goods take-off device can be adjusted or changed over quickly. The necessary wrapping for the process-reliable introduction of the goods pull-off force is present in both settings to a sufficient extent.

1

figure 1 shows a warp knitting machine 26 comprising a machine head 1 and a machine head 2 .

2

figure 2 shows the warp knitting machine 26 figure 1 in a different view. A machine bed 14, several upper middle walls 12 and lower middle walls 13, as well as a swivel drive 15 and an offset drive 16 are shown.

3

figure 3 shows a section AA through the warp knitting machine 26 in the area of two spacer plates 10 between the machine upper part 1 and the machine lower part 2.

4

figure 4 shows the swivel drive 15 of a lever shaft 3, 4, 5, 6, which comprises a linear stepper motor 18, a drive lever 20 and a joint 21.

figure 5

figure 5 shows the swivel drive 15 of a lever shaft 3, 4, 5, 6, which comprises a rotary stepping motor 22 and a belt transmission 24.

6

figure 6 shows schematically the position of the lever shaft 3 relative to a hook needle 27 and several thread guide elements 9 of the warp knitting machine 26 when it works according to the principle of a warp knitting machine.

7

figure 7 shows schematically the position of the lever shaft 3 relative to a hook needle 27 and several thread guiding elements 9 of the warp knitting machine 26 when it works according to the principle of a Raschel machine.

8

figure 8 shows a symbolic representation of a front end of a circuit board 101 in a view in width direction B.

9

figure 9 shows in a symbolic representation, by way of example, two sinkers 101 of a sinker arrangement 110 with a knock-down strip 111 in a view obliquely from above and from the front.

10

figure 10 symbolically shows an oblique view of a section of a tee band 111 with connecting means 113 and spacer element 114.

11

figure 11 shows the relevant components of a warp knitting machine 26 in a symbolic view in the width direction with the fabric take-off device 115 set horizontally.

12

figure 12 shows the relevant components of a warp knitting machine 26 in a symbolic view in the width direction with vertical adjustment of the fabric take-off device 115.

13

figure 13 shows in a joint representation of 6 and 11 the arrangement of the elements described above in a configuration based on the principle of a warp knitting machine.

14

figure 14 shows in a joint representation of 7 and 12 the arrangement of the elements described above in a configuration based on the principle of a Raschel machine.

the figure 1 shows a schematic diagram of a warp knitting machine 26, the machine frame 25 of which is divided into two and comprises a machine upper part 1 and a machine lower part 2, the machine lower part 2 being arranged on a machine bed 14. The machine head 1 comprises a lever shaft 3 which is rotatably mounted in the machine head and is connected to bar carriers 7 . A guide bar 8 is mounted on the bar carrier 7 so that it can be displaced in the machine width direction z. The storage is not shown for the sake of simplicity. Furthermore, the warp knitting machine 26 comprises three further lever shafts 4, 5, 6, all three of which are rotatably mounted in the machine base 2 and initiate knitting movements in knitting tools via bar carriers and bars. These ingot carriers and knitting tools are not shown. The machine upper part 1 and the machine lower part 2 are connected to one another by means of screws 11, the machine upper part 1 having a slot for this purpose per screw 11, the longitudinal axis of which extends in the machine depth direction x, and the machine lower part 2 per screw 11 having a threaded hole. However, other devices for connecting the machine head 1 to the machine base 2 are also advantageously conceivable - for example one Connection with lockable rails. In this exemplary embodiment, the upper machine part 1 can be displaced in the machine depth direction x relative to the lower machine part 2 by an amount which corresponds to the length of the elongated hole. Spacer plates 10 are arranged between the upper machine part 1 and the lower machine part 2;

the figure 2 shows the warp knitting machine 26 figure 1 in a view rotated 90 degrees about the machine height direction y. The machine base 2 comprises three lower central walls 13 which are offset from one another in the machine width direction z and are connected to the machine bed 14 . The machine head 1 comprises three upper central walls 12, the lever shaft 3, with which the guide bar 8 can be driven, a swivel drive 15 for the lever shaft 3 and an offset drive 16 for the guide bar 8. Three spacer plates 10 and the machine head 1 are connected by means of screws 11 to the Machine base 2 connected. The pivot drive 15 drives the lever shaft 3, with which the guide bar 8 can be driven, and the guide bar 8 and the thread guide elements 9 perform a pivoting movement about the axis of rotation of the lever shaft 3. At the same time, the offset drive 16 drives the guide bar 8 and the yarn guide elements 9 in an oscillating offset movement in the machine width direction z. By superimposing the pivoting movement and the offset movement, the thread guide elements 9 perform a three-dimensional operative movement.

the figure 3 shows the section A, whose position in figure 1 is shown. The three spacer plates 10 are shown in section. There are two elongated holes 17, through which a screw 11 runs, shown in each of the spacer plates 10. The elongated holes 17 of the spacer plates 10 allow the relative position of the machine head 1 to the machine base 2 in the machine depth direction x to be adjusted.

the figure 4 shows the swivel drive 15 of a lever shaft 3, 4, 5, 6, which comprises a linear stepping motor 18, a linear stepping motor output shaft 19, a drive lever 20 and a joint 21 attached eccentrically to one of the lever shafts 3, 4, 5, 6. The linear drive movement of the linear stepper motor output shaft 19 is translated into a rotary movement of the lever shaft 3, 4, 5, 6 via the drive lever 20 and the joint 21 eccentrically attached to the lever shaft 3, 4, 5, 6.

the figure 5 shows the swivel drive 15 of a lever shaft 3, 4, 5, 6, a rotary stepping motor 22, a rotary stepping motor output shaft 23 and a Belt transmission 24 includes. The belt transmission 24 is preferably a toothed belt which is positively connected to toothed belt pulleys on the rotary stepping motor output shaft 23 and the lever shaft 3, 4, 5, 6, with the speed and torque of the rotary stepping motor output shaft 23 depending on the number of teeth on the toothed belt pulleys slip-free in a speed and torque of the lever shaft 3, 4, 5, 6 are translated.

All four lever shafts 3, 4, 5, 6 of the embodiment are associated with pivot drives 15, which can be controlled via a common electronic control device. The electronic control device includes a storage device in which movement profiles for knitting tools are stored and specify the knitting movement of the knitting tools. In order to produce a warp knitted fabric 120, all knitting tools must carry out knitting movements that are coordinated with one another. The stored movement profiles are therefore assigned to groups, each of which includes a movement profile, which is matched to the other movement profiles of the group, for each knitting tool. The electronic control device can control the swivel drives 15 according to a selected group of movement profiles in such a way that the knitting tools execute the knitting movements that are coordinated with one another. It is possible to store correspondingly different groups of movement profiles for warp-knitted goods 120 with compositions of different diversity, which take into account an adaptation of the knitting movements of the knitting tools to the composition of the warp-knitted goods 120 . Thus, when changing the composition of the warp knitted fabric 120, the correct knitting movement can be set by selecting the correct group of movement profiles.

the figure 6 shows a schematic representation of the spatial arrangement of the lever shaft 3 relative to the thread guide elements 9 and a hook needle 27 when the warp knitting machine 26 operates on the principle of a warp knitting machine. The illustration is not true to scale; in particular, the pivoting radius 33 is shown too small compared to the other elements of the illustration. The ingot carrier 7 and guide bars 8 are in the figure 6 not shown, but connect the thread guide elements 9 with the lever shaft 3 in the warp knitting machine 26. The thread guide elements 9 perform a pivoting movement 28 on a circumference with the pivoting radius 33 around the lever shaft 3, which has directional components both in the machine depth direction x and in the machine height direction y. Through this pivoting movement 28, the threads 30 presented to the hook needle 27, with the threads running through the thread guide openings 34 of the thread guide elements 9 and thus following the pivoting movement 28. In order to achieve the desired course of the pivoting movement 28, there is a depth offset 31 in the machine depth direction x and a height offset 32 in the machine height direction y between the lever shaft 3 and the hook needle 27, which are matched to the knitting movements of all knitting tools.

the figure 7 shows a schematic representation of the spatial arrangement of the lever shaft 3 relative to the thread guide elements 9 and a hook needle 27 when the warp knitting machine 26 operates according to the Raschel principle. The illustration shows largely the same elements as figure 6 . However, the arrangement of the elements in relation to one another differs due to the Raschel principle: the pivoting movement 29 of the thread guide elements 9 has a significantly smaller directional component in the machine height direction y in comparison to the pivoting movement 28 of a warp knitting machine, which works according to the principle of a warp knitting machine. With the Raschel principle, the pivoting movement 29 of the yarn guide elements 9 runs predominantly in the machine depth direction y. In order to achieve this course, the depth offset 31 between the lever shaft 3 and the hook needle 27 is significantly smaller than in a warp knitting machine that works according to the principle of a chain knitting machine, or the lever shaft 3 and the hook needle 27 are arranged one above the other in such a way that no depth offset 31 between both consists. If the swiveling radius 33 remains unchanged, the vertical offset 32 must be greater with the Raschel principle than with a warp knitting machine that works according to the principle of a warp knitting machine, so that the swiveling movement 29 of the thread guiding elements at the height of the hook needle 27 runs predominantly in the machine depth direction x. For this purpose, the height offset 32 and the pivoting radius 33 have approximately the same amount in the Raschel principle.

The warp knitting machine 26 described above, in which the lever shaft 3, with which the guide bars are driven, in its relative position to the other lever shafts 4, 5, 6 - and thus also to the knitting tools 27, 101 of these lever shafts 4, 5, 6 - in Machine depth direction x and machine height direction y is adjustable, can thus be operated by the correct setting of this relative position both according to the Raschel principle and according to the principle of a warp knitting machine. This applies in particular if, in addition, the goods take-off direction 121 and the sinkers 101 of the warp knitting machine 26 are suitable for this. Suitable sinkers 101, sinker arrangements 110 and fabric pull-off devices 115 are described below for this purpose.

figure 8 shows a symbolic representation of a front end of a sinker 101 in a view in width direction B. The sinker 101 includes a knock-off edge 102, which is straight and faces forward (in figure 8 left) is inclined. The hold-down edge 103 is located at a distance from the knock-off edge 102 in the vertical direction H. The enclosing edge 104 connects the knock-off edge 102 to the hold-down edge 103 and delimits both to the rear (in the figure 8 to the right). The drop edge is limited at the front by a drop edge transition point 105, which is adjoined by a steeply sloping contact edge 106 running approximately in the vertical direction H. The contact edge 106 has a depression in its lower area, which can serve as a holding device 109 . The contact edge 106 ends downwards in a support edge transition point 107 to which a support edge 108 is connected. The supporting edge 108 runs approximately parallel to the knock-off edge 102 and at right angles to the contact edge 106. The circuit board 101 is without its rear (in the figure 8 right) Section that is used to connect to other machine elements such as a bar is shown. The connection of the circuit board 101 to other machine elements can be configured according to the state of the art.

figure 9 shows in a symbolic representation, by way of example, two sinkers 101 of a sinker arrangement 110 with a knock-down strip 111 in a view obliquely from above and from the front. The circuit boards 101 are largely identical in design to the circuit boards 101 of figure 8 . The knock-off band 111 rests on the support edge 108 and on the contact edge 106 . The contact edge 106 and the supporting edge 108 are correspondingly covered by the knock-off strip 111 in this view. The cut-off tape 111 bridges the distance in the width direction B between the sinkers 101 and warp knitted fabric 120 can be drawn off over the upper edge of the cut-off tape 111 and its outer side 112 in the vertical direction H downwards. However, warp knitted fabric 120 can also be pulled forward parallel to the longitudinal direction L parallel to the knock-over edge 102 . As in figure 8 only the front end of the boards 101 is shown. figure 9 shows only part of the extension in width direction B of knock-off belt 111 and sinker arrangement 110.

figure 10 symbolically shows an oblique view of a section of a knock-off strip 111 with connecting means 113 Circuit board assembly 110 are inserted and set exactly the required distance at the front ends and stabilize. Based on figure 9 two circuit boards 101 can be spaced apart by the spacer elements 114 shown.

figure 11 shows the fabric take-off device 115, the sinker arrangement 110 and the hook needles 27 of a warp knitting machine 26 in a symbolic view in the width direction B when the fabric take-off device 115 is set in a horizontally forward-oriented direction Hz of the warp knitting machine, starting from the stitch-forming area. The hooked needles 27 are picked up by the needle bar 122 . The circuit board bar is not shown in the view. figure 11 shows a sinker arrangement 110 together with a compound needle arrangement comprising hook needles 27 and sliders 123 according to the prior art, with parts of the slider 123 being covered by the hook needles 27 . The warp knitted fabric 120 indicated as a single line is pulled off approximately parallel to the knock-over edge 102 . The warp yarns 30—or also threads 30—are fed in as usual essentially in the vertical direction from above, which in turn is symbolized by a line. The goods take-off device 115 is shown in a first predeterminable setting 116 . In this setting, the first roller 118 of the goods take-off device 115 rotates counterclockwise. The second roller 119 or the axis of the second roller 119 of the goods take-off device 115 is arranged in the vertical direction V below the first roller 118 or the axis of the first roller 118.

figure 12 shows the same components of a warp knitting machine in a symbolic view in the width direction B but with the fabric take-off device 115 set in the vertical direction V. The fabric take-off device 115 is shown in a second predeterminable setting 117 . In this setting, the first roller 118 of the goods take-off device 115 rotates clockwise. The second roller 119 of the goods take-off device 115 is arranged in the vertical direction V above the first roller 118 . The warp knitted fabric 120 is drawn off over the knock-off tape 111 . The warp knitted fabric 120 is peeled off at a small angle to the vertical V direction. The rollers 118, 119 and their diameters are not shown on the same scale as the knitting tools.

the figure 13 shows a schematic representation of the warp knitting machine 26 according to the invention in a configuration for the production of warp knitted fabric 120 in the sense of warp knitting machines. The fabric take-off device 115 is in a first predeterminable setting 116, the warp-knitted fabric 120 produced being largely taken off in the horizontal direction Hz. The relative offset 31, 32 between the lever shaft 3 and hook needle 27 is set in such a way that the thread guide elements 9 perform the pivoting movement 28 of a warp knitting machine, i.e. move at the height of the hook needle 27 with comparable directional components in the horizontal direction Hz and vertical direction V as far as possible. The stitches produced are knocked off the hook needle 27 with the sinker arrangement 110 through contact with the knock-over edges 102 .

the figure 14 shows a schematic representation of the warp knitting machine in a configuration that serves to produce warp knitted fabric 120 in the sense of Raschel machine fabric. The goods take-off device 115 is in a second predeterminable setting 117, the warp-knitted fabric 120 produced being pulled off in the vertical direction V as far as possible. The relative offset 31, 32 between the lever shaft and hook needle is set in such a way that the thread guide elements 9 perform the pivoting movement 29 of a Raschel machine, ie move at the height of the hook needle 27 largely in the horizontal direction Hz. The stitches produced are knocked off the hook needle 27 with the sinker arrangement 110 through contact with the knock-over band 111 and the knock-over edges 102 . Herein lies a decisive difference to the configuration figure 13 . Reference List 1 machine head 2 machine base 3 lever shaft of the guide bar 4 Lever shaft of the slider bar 5 Needle bar lever shaft 6 Lever shaft of the sinker bar 7 bar carrier 8th bars 9 thread guiding element 10 spacer plate 11 screw 12 upper middle wall 13 Lower middle wall 14 machine bed 15 slewing drive 16 offset drive 17 Long hole 18 linear stepping motor 19 Linear Stepper Motor Output Shaft 20 drive lever 21 joint 22 rotary stepper motor 23 Rotary Stepper Motor Output Shaft 24 belt transmission 25 machine frame 26 warp knitting machine 27 hook needle 28 Pivoting movement of the thread guide element (9) of a warp knitting machine 29 Pivoting movement of the thread guide element (9) of a Raschel machine 30 thread, warp yarn 31 Relative offset between lever shaft (3) and hook needle (27) in machine depth direction (x) 32 Relative offset between lever shaft (3) and hook needle (27) in machine height direction (y) 33 swing radius 34 thread guide opening x machine depth direction y machine height direction e.g machine width direction 101 circuit board 102 tee edge 103 hold down edge 104 enclosing edge 105 Tee Edge Transition Point 106 contact edge 107 support edge transition point 108 support edge 109 holding device 110 circuit board arrangement 111 tee tape 112 Outer surface of the tee tape (111) 113 lanyard 114 spacer element 115 Goods take-off device 116 first predeterminable setting of the goods take-off device 117 second predeterminable setting of the goods take-off device 118 first roller of the goods take-off device 119 second roller of the goods take-off device 120 warp knit fabric 121 Goods withdrawal direction 122 needle bar 123 slider B latitude direction H height direction L longitudinal direction Hz horizontal direction V vertical direction

Claims (15)

1. Warp-knitting machine (26) for producing warp-knitted fabric (120), having the following features:

   a) a plurality of lever shafts (3, 4, 5, 6), the axes of which extend in the machine width direction (z) and which run largely parallel to one another,

   b) a plurality of bar supports (7) which can be driven by the lever shafts (3, 4, 5, 6) to perform pivoting movements in the plane which is spanned by the machine height direction (y) and the machine depth direction (x),

   c) at least one guide bar (8) which supports thread guiding elements (9),

   d) wherein the at least one guide bar (8) is mounted and driven in the warp-knitting machine (26) in such a way that it executes an oscillating offset movement, which is superimposed on its pivoting movement, in the machine width direction (z) during operation,

   e) the relative position of the lever shaft (3), with which the at least one guide bar (8) can be driven, to the further lever shafts (4, 5, 6), with which in each case at least one further bar can be driven, can be adjusted in the machine height direction (y) and/or in the machine depth direction (x),

   f) wherein the warp-knitting machine (26) comprises a machine frame (25) which supports a plurality of lever shafts (3, 4, 5, 6),

   g) the machine frame (25) comprises a machine upper part (1) and a machine lower part (2),

   h) and the machine upper part (1) comprises at least the lever shaft (3) of the guide bars (8) and the components that can be driven by it,
   characterized in that

   i) the machine upper part (1) and the machine lower part (2) can be adjusted relative to one another in the machine height direction (y) and/or in the machine depth direction (x).
2. Warp-knitting machine (26) according to the preceding claim,
   characterized in that
   at least the angular range of the pivoting movement of the lever shaft (3), with which the at least one guide bar (8) can be driven, is variable.
3. Warp-knitting machine (26) according to one of the preceding claims,
   characterized in that
   the machine upper part (1) comprises at least two upper central walls (12) which are offset parallel to one another in the machine width direction (z) and/or the machine lower part comprises at least two lower central walls (13) which are offset parallel to one another in the machine width direction (z).
4. Warp-knitting machine (26) according to one of the preceding claims,
   characterized in that
   the warp-knitting machine (26) has means for adjusting the relative position between the parts of the machine frame (25), which means comprise at least one of the following features:

   • a spacer plate (10) for adjusting the distance between the two parts of the machine frame (25) in the machine height direction (y),

   • threaded bores and elongate holes (17) for adjusting the relative position between the parts of the machine frame (25) in the machine depth direction (x),

   • a fitting screw,

   • a rail connection, wherein the rails allow mobility between the parts of the machine frame (25) in the machine height direction (y) and/or machine depth direction (x).
5. Warp-knitting machine (26) according to one of the preceding claims,
   characterized in that
   the machine upper part (1) comprises at least one offset drive (16) which drives the at least one guide bar (8) to perform its oscillating offset movement in the machine width direction (z).
6. Warp-knitting machine (26) according to one of the preceding claims,
   characterized in that
   a pivot drive (15) is associated with each of the lever shafts (3, 4, 5, 6) for their respective pivoting movement, wherein the pivot drive (15) preferably comprises an electric machine.
7. Warp-knitting machine (26) according to the preceding claim,
   characterized in that
   at least one pivot drive (15) comprises a linear stepper motor (18) or a rotary stepper motor (22).
8. Warp-knitting machine (26) according to either of Claims 6 and 7,
   characterized in that
   the machine upper part (1) comprises the pivot drive (15) of the lever shaft (3).
9. Warp-knitting machine (26) according to one of Claims 6 to 8,

   characterized in that

   a plurality of pivot drives (15) comprise electric machines,

   and in that these electric machines can be controlled by an electronic control apparatus.
10. Warp-knitting machine (26) according to the preceding claim,
    characterized in that
    the electronic control apparatus is designed to actuate the electric machines in such a way that they drive the knitting tools driven by them in accordance with specific predefined movement profiles.
11. Method for successively producing batches of warp-knitted fabric (120) with a single knit layer and compositions of different diversity, comprising the following method features:

    • a plurality of lever shafts (3, 4, 5, 6), the axes of which run largely parallel to one another, are supplied with torque,

    • a plurality of bar supports (7) which are fitted with bars are driven by the lever shafts to perform pivoting movements in the plane which runs transversely to the axes of the lever shafts (3, 4, 5, 6),

    • at least one guide bar (8) which is fitted with thread guiding elements (9) is mounted and driven in such a way that it executes an oscillating offset movement, which is superimposed on its pivoting movement, in the direction (z) of the axial extent of the lever shafts (3, 4, 5, 6) during operation,

    characterized in that,
    for the purpose of changing the composition of the warp-knitted fabric (120) produced, the relative position of the lever shaft (3), which drives the guide bar (8), to the lever shafts (4, 5, 6), with which in each case at least one further bar is driven, is changed by way of a machine upper part (1) and a machine lower part (2) being adjusted relative to one another in at least one of two spatial directions which run transversely to the axial extent of the lever shafts (3, 4, 5, 6).
12. Method according to the preceding claim,

    characterized

    in that at least two different pivot drives (15) are used, the first of which drives at least the guide bar (8) and the second of which drives at least one other bar,

    and in that the movement of these two pivot drives (15) is actuated in such a way that the thread guiding elements (9) of the guide bar (8) and the knitting tools of the other bar execute knitting movements which are matched to one another.
13. Method according to the preceding claim, characterized in that the at least two pivot drives (15) are actuated on the basis of stored movement profiles which are individually matched to the composition of the warp-knitted fabric (120) of the respective batch.
14. Method according to the preceding claim,
    characterized in that
    at least two groups of movement profiles which are matched to one another are stored in a storage apparatus and will be used after a change in the composition of the warp-knitted fabric (120) produced.
15. Method according to the preceding claim,
    characterized in that
    the fabric take-off direction (121) is adjusted for a change in the composition of the warp-knitted fabric (120) produced.

Images