DD210317A5 - FLAT CUTTING MACHINE (SYSTEM COTTON) - Google Patents

Abstract

Flat Kulierwirkmaschine (System Cotton) with at least one needle bar, in which for the purpose of stitching at least one functional element in the form of a Fadenfuehrers and / or a Kulierkurve between two vorgewaehlten end positions is reciprocally mounted, and with a drive device for generating the back and forth motion. While the goal is to provide the weft knitting machine with a new drive for the thread guides and / or picking curves, which simplifies the production of complicated patterns and increases the production speed, the task is to design the drive so that the Anschlaege and Shock absorber for the thread guides and a variety of previously required to move the thread guide and / or the Kulierkurven mechanical components can be omitted. This is essentially achieved in that the drive device has a servo motor and an electronic control circuit connected thereto.

Description

Title of the invention - 1 -

Flat weft knitting machine (System Cotton) Field of application of the invention

The invention relates to a flat Kulierwirkmaschine (System Cotton) with at least one needle bar, in which for the purpose of stitching at least one functional element in the form of a thread guide and / or a Kulierkurve between two preselected end positions is reciprocally mounted, and with a drive device for generating the float.

Characteristic of the known technical solutions

Kulierwirkmaschinen this type have at least one occupied with rigidly mounted tip needles, needle bar. The stitch formation takes place in that a piece of thread is placed over the shafts of all involved in the knitting needles by means of a thread guide, this piece of thread is then formed by Kulierplatinen to loops to pull the required amount of thread from the thread guide, and finally formed with all the needles simultaneously stitches become.

,, ---, during 'the needle bar during the stitch formation operation, a com- bined Z ^ J performs horizontal and vertical motion, the yarn guide is reciprocated on a linear 3ahn parallel to the needle bar and forth. The sinker movably mounted in a sinker head are driven out by means of a likewise along the needle path reciprocating Kulierkurve (Rössel, Rößchen) individually and successively, wherein between the sinker and the Kulierkurve pivotally mounted pivot lever can be provided as transmission elements.

The path of the yarn guide is limited on both sides of the needle bar by fixed, according to the desired working or pattern width stops. It is therefore necessary to take the thread guide on the one hand via a sliding friction slide on a guide rod and on the other hand

equipped with shock absorbers to avoid too hard shocks and rebounding of the thread guide when hitting the stops. Instead of only one thread guide are often more, optionally mitnehmbare and provided by means of couplings selectively engageable thread guide.

The linear movement of the yarn guide and the Kulierkurve is derived from the rotational movement of a Hauptexzenterwelle driven by an electric motor and a continuously variable transmission or a Leonard circuit. In order to also adjust the movement of the Kulierkurve u.U. In comparison to the needle bar width to allow very small desired working width, the rotational movement of the eccentric shaft by means of a Kulierexzenters, a so-called. Rocker, bevel gears, threaded spindles, racks od. Like. Converted into a reciprocating motion with adjustable stroke for the Kulierkurve.

At this fundamental, quite complicated mechanical structure of a flat Kulierwirkmaschine (System Cotton), which has changed little since its existence, resulting in several inconveniences. First, the friction brake used for the drive of the thread guide must on the one hand allow so much slippage that upon reaching the attacks no blocking occurs, but on the other hand grip so tight that no slip occurs during the desired movement phases, otherwise the usual flow of the thread guide compared to Kulierkurve could be affected unfavorably. Such adjustment of the friction brake is not without problems, since the friction conditions in the warmed-up or cold state of the machine often fluctuate greatly. Furthermore, the shock absorber disturbing because they take up additional space and increase the effort. Furthermore, the attacks mainly affect the pattern possibilities and the production speed. When ringing for example, the required yarn guides are often on the wrong side of the needle bar, so that empty rows are required, which reduce production. Should intarsia patterns be made

in the form of threaded spindles, stepper mechanisms, cams od. Like. Required to move the attacks on both sides, which increases the effort .weiter and further deteriorates the already unfavorable space conditions. Apart from that, such shifts can be made by design only in small steps, so that idle strokes are required when larger shifts are desired. In the manufacture of honeycomb and intarsia patterns, finally, the machine has to be stopped frequently for color changes to the assignment of the colored yarns into the yarn guides ^"to change mit'der hand or all the stops again

S ~ \. adjust. This is time consuming and with high production

W. ' Associated losses. ·

To avoid the friction brakes, it is already known (DE-OS 'en 29 51 332 and 29 51 386), both the Kulierkurve and'use the thread guide slip-free by means of a differential drive to move. The come. Thread guide and the Kulierkurve leading .Antriebsorgane shortly after the impact of the yarn guide to the stops to a standstill. Can also einem.derartigen drive mechanism: however, weder- avoid components which stops for the thread-guide "and the consequent restrictions on the patterning possibilities and the production noch.die complex mechanical /% '' [ 'to derive the linear motion of the"""The thread guide and the Kulierkurve from the rotation of the main eccentric shaft are needed.

Object of the invention

- The object of the invention: is the flat Kulierwirkmaschine (System Cotton) of the type described

, provided with a redesigned drive for the yarn guide and / or the Kulierkurven ,, which simplifies the production of even complicated patterns and the Produktionsge-;. speed increased.

Explanation of the essence of the invention

The invention has the special object of designing the new drive so that the stops and shock absorbers for the thread guides and a large number of the mechanical components previously required for moving the thread guides and / or the picking curves become unnecessary.

To solve this problem, the drive device according to the invention has a servo motor and an electronic control circuit connected thereto.

If the flat weft knitting machine has a plurality of functional elements, then the drive device expediently has the purpose of reciprocating each individual functional element, one servo motor each and one electronic control circuit connected thereto.

Preferably, the control circuit has a setpoint generator for the generation of end position signals, an actual value generator for. the output of Istpositionssignalen, a comparator for the final and actual position signals and a comparator downstream of the control amplifier, which influences the servo motor so that it comes to a standstill upon reaching a preselected end position.

Advantageously, the control circuit further comprises a program control upstream of the setpoint generator for the pattern-specific change of the end position signals.

In this case, each functional element may be coupled to a belt which is part of a belt arrangement coupled to the servomotor.

The belt arrangements and servomotors of all functional elements are expediently accommodated in a drive region which is arranged laterally next to the needle bar comprising the working area.

In this case, each functional element can be fastened to a rod which can be displaced parallel to the needle bar and projects laterally into the drive region.

In addition, each belt assembly may have a guided on at least one guide rod, coupled to the associated belt carriage on which the rod of the associated functional element is attached.

Advantageously, each belt assembly further includes a drive shaft coupled to the associated servomotor and a loosely rotatable countershaft supporting pulleys for the belts.

For reasons of space saving the drive and countershafts are useful in several floors each parallel to each other and alternately next to each other, the pulleys and belts each floor, however, arranged offset from each other in the axial direction.

Advantageously, the Kulierwirkmaschine also has a rotatably mounted main eccentric shaft, to the drive also a ^: Servomotor 'and a control circuit provided ^ are.

Finally, the weft knitting machine may additionally comprise a cover device with cover bars, which are each associated with a servo motor and a control circuit.

The invention brings considerable advantages. First, the direct drive each thread guide or each Kulierkurve the result that all attacks and friction brakes and all those components can be omitted, the previously to derive the linear movements of the yarn guide and the Kulierkurve from the rotational movement of the Hauptexzenterwelle be. were required. Furthermore, all components can be omitted that were previously required in the production of patterns or even when Fassionieren to adjust the stops for the thread guide according to the pattern. Furthermore, the production speed is significantly increased, because the \ Fadenführer by means of direct drives quickly and accurately.

J ~ can be set to another work area and also for this purpose no derived from the rotational movement of the main eccentric shaft movements are needed, but only according to the pattern new setpoints for the servomotors need to be specified. Finally, the work area of the weft knitting machine is largely free of mechanical lever, spindle and switching mechanisms, because the drive devices can be arranged in a arranged next to the work area drive area and therefore in the work area only the Fadenführer- and Kulierkurvenstäbe and their leadership. required plain bearings remain. This greatly simplifies access to the work area during knitting and repair work.

, embodiment

The invention will be explained in more detail with reference to an embodiment in conjunction with the accompanying drawings. Show it:

Fig. 1 shows schematically a drive according to the invention for a yarn guide;

2 is a schematic front view of a sewing machine according to the invention (system cotton) with a working area and a drive area arranged next to it;

FIG. 3 schematically shows a front view of the drive region according to FIG. 2 in an enlarged view; FIG. and

4 shows a section along the line IV-IV of Fig. 3rd

. ~ f \ In Figure 1, a preferred embodiment of the Inventions ^K is - * 'drive device according to first shown independently from the flat weft knitting machine schematically. It includes a servomotor 1 and a belt assembly, generally designated by the reference numeral 2. This is driven by the output shaft 3 of the servo motor 1 via a schematically illustrated as a belt transmission countershaft 4. The belt assembly 2 has a connected to the output of the intermediate gear 4 drive shaft 5 with a pulley 6 and a. Axial parallel ¹ , loosely rotating countershaft 7 with a pulley 8. Around both pulleys 6 and 8, a belt 9 is placed with a substantially horizontal upper run and a lower run, so that the belt 9 depending} '; .. direction of rotation of the servo motor 1 in the direction of a double arrow ν is reciprocable. The belt 9 'is preferably a finite belt, the two ends of which are connected in the region of the upper run by a belt lock 10 to which a carriage H is fastened. Alternatively, it may be an endless belt, on the upper run of the carriage 11 is attached directly.

The carriage 11 has a parallel to the upper run of the belt 9, through hole, which is penetrated by a guide rod 12, which is also arranged parallel to the upper run, the belt 9 and the ends in

Machine frame are attached. The carriage 11 also carries a driver 13 on which a yarn guide rod 14 arranged parallel to the upper run of the belt 9 for holding at least one functional element not shown in FIG. 1, e.g. a thread guide, is attached.

The servomotor 1 is connected via lines 15, 16 and 17 to a control circuit 18. These are fed via the line 15 actual value signals relating to the respective current actual position of the yarn guide rod 14. These actual value signals are compared in a comparator 19 with the predetermined by a setpoint generator 20 end position signals. The resulting deviation is applied in the form of an analog voltage to a circuit 21 which converts the analog voltage into a setpoint signal which provides a setpoint for the speed of the servomotor 1 and is fed to a comparator 22. The comparator 22 also receives via the line 16 actual value signals concerning the instantaneous speed of the servomotor 1 and compares both signals. The deviation is fed to a control amplifier 23, which causes a rotation of the servomotor 1 in one or the other direction until the actual position of the yarn guide rod 14 corresponds to the predetermined desired position. In this case, the difference between the actual position and the target position is getting smaller, whereby the speed of the servomotor 1 is getting smaller, until it finally comes to a standstill when reaching the actual position.

As a servomotor 1 is preferably a permanentmagneterregt he synchronous motor of the company Indramat GmbH used in 8770 Lohr am Main. Such a servomotor 1 is adjustable in its speed, the speed control is done by electrical commutation and regulation of the current in the stator windings. It also has all the facilities required to acquire the current actual position and to produce a desired setpoint position in the form of a: Feedback unit suitable for electrical commutation, velocity feedback and incremental position feedback.

tion detection (actual value generator) can be used, so that additional elements for detecting the actual position of the thread guide rod 14 are not required.

The setpoint generator 20 alternately generates the setpoint values for the yarn guide end positions required for the production of any knitted fabric: at both ends of the knitted fabric. Preferably, the setpoint generator 20 is preceded by a program control 24, by means of which different nominal values can be generated according to the pattern. These nominal values can be used in any desired manner, eg on film, hole, drum or card memories or in the memories of a V electronic data processing system .Like be stored. The stored data are then retrieved after each revolution of the main eccentric shaft of the weft knitting machine and offered in the desired order to the comparator 19, which may be formed as a differential amplifier. In addition, it is expedient od the main eccentric shaft with a rotary encoder. Like. To provide such that it emits a synchronization signal at each revolution and this synchronization signal to the setpoint generator 20 and .. the program. control ¹ 24 ₉ feeds so dle ^..:: Reference signals: ^1,. Working cycle of the knitting machine provided and aabei the yarn guide rods 14 are moved synchronously to the rotation of the main eccentric shaft.

The operation of the described drive device for the thread guide bar 14 is as follows:

Instead of deriving the reciprocating motion of the yarn guide rod 14 from the rotational movement of the main eccentric shaft, the yarn guide rod 14 is reciprocated by means of the belt 9 driven by the servo motor 1. The reciprocating rotational movements of the servomotor 1 are generated in response to a switching signal by means of the control circuit 18, which under the control of the setpoint generator 20 and the program control 24 simultaneously

respective end positions of the yarn guide rod 14 defines at both ends of its path of movement. By converting the position deviation into a speed command signal, it is achieved that the thread guide bar 14 does not need to be stopped abruptly at the respective end positions, but approaches it with a gradually decreasing speed. The application of the servo motor 1 therefore allows on the one hand with the exception of the synchronization of the drive of the main eccentric independent movement of the thread guide rod 14 and on the other hand, the elimination of a variety of mechanical components, previously for deriving its movement from the rotational movement of the Hauptv eccentric shaft, for shock absorption, for braking or to the pattern- proper movement of the attacks were required.

To enter the program and. the other commands depending on the machine type is expedient to provide a control panel with a keyboard, 'visual aids can facilitate the review and troubleshooting.

The reciprocating motion of the Kulierkurve is made according to the invention in the same manner as described above with reference to the thread guide rod 14. As a result, the further advantage that also this movement can not be derived from the rotational movement of the Hauptexzenterwelle '-, which accounts for adjusting the movement stroke of the Kulierkurve previously required and mechanically complex components omitted and by entpsrechende circuit of the servomotors in a simple manner in both directions of movement the desired flow of the thread guide rod 14 can be ensured.

A flat Kulierwirkmaschine (System Cotton) with a plurality of functional elements in the form of multiple yarn guide and a Kulierkurve is described below, each of which a Fadenführer- or Kulierkurvenstab is assigned, each with a drive according to FIG. 1 is moved. Incidentally, in Fig. 2 to 4 only

the necessary for understanding the invention elements of the flat Kulierwirkmaschine (System Cotton) shown.

According to 'Fig. 2, the frame 25 of the flat Kulierwirkmaschine (System Cotton) is divided into a drive section shown on the left 26 and a work area 27 arranged to the right. The work area 27 comprises a needle bar 23, on the tip needles, not shown, a knitted fabric 29 is produced, a Kulierkurvenstab 30 which carries a Kulierkurve 31, a plurality of yarn guide rods 32a to i, of which in Fig. 2, only the yarn guide rods 32a and 32f are shown and each carrying a yarn guide 33a to i Jr ^, which supplies the needle needles 34- thread, and a KJ Hauptexzenterwelle 35 with eccentrics 36. The Kulierkurvenstab 30, the yarn guide rods 32 and the Hauptexzenterwelle 35 are horizontally displaceable or rotatably mounted in the machine frame 25 and protrude with axial extensions in each case into the drive region 26 inside. In the drive region 26, a servomotor 37 is mounted, which is preferably designed like the servomotor 1 and directly drives the main eccentric shaft 35. Above the servomotor 37, there is provided a belt assembly 38 corresponding to the belt assembly 2 (Fig. 1) consisting essentially of a driven pulley 39, a loosely rotating pulley 40 and a finite belt 41 therealong, the C ' \ both ends are connected by a belt lock which a - ^y carriage carries 42nd On the carriage 42, a driver 43 and attached to this horizontally slidably mounted Kulierkurvenstab 30 which is arranged parallel to the two long runs of the belt 41. As shown in FIG. 3 shows the attached to a drive shaft 44 pulley 39 is offset via a countershaft 45 by a machine frame 25 'mounted' and according to FIG. 1 formed servomotor 46 in revolutions, while the pulley 40 on a loose rotatable Gegenwelle.47 is attached. Incidentally, the arrangement of Fig. 1 with the example of the yarn guide he says it from 14 described device corresponds.

As can be further seen in Figures 2 and 3, a total of 9 belt assemblies 48a-i are mounted within the drive section 26 and above the cam follower 31 drive, and respective belt assemblies 48a-i are shown in Figures 1. These are shown in Figs 4 also arranged next to one another in each floor according to Fig. 4. In this case, only so many elements of these belt assemblies 48 and driven by these yarn guide rods 32a to i shown in Fig. 2 to 4, as is clear for the sake of clarity graphic representation is possible.

Each belt assembly 48 comprises, according to FIGS. 2 and 3, a servomotor 49a-i, which corresponds only schematically to the servomotor 1, which can rotate a drive shaft 50a-i via an unillustrated countershaft, and a loose rotatable countershaft 51a-i. In this case, in a left frame part 52 and in the lower floor, the drive shafts 50a and 50b are arranged parallel to the axis and at a distance from each other, while in a right frame member 53 associated countershafts 51a and 51b are stored in the same floor, parallel to the axis and at a corresponding distance- left frame part 52 are in. the lower floor also the counter shafts 51c and 51d, in the right frame member 53, however, according to the corresponding drive shafts 50c and 50d mounted at equal intervals and axially parallel. In each case alternately drive or countershafts are arranged side by side. Due to this nested construction, in the area of each drive shaft 50, there is sufficient space for attachment. Servo motors 50a to d created so that the drive portion 26 may have a relatively small width despite the plurality of shafts and servomotors. A corresponding interleaving of the shafts 5Oe to 5Oi and 51a to 51i is provided in the upper floor of the drive section 26.

On each drive shaft 50 or each countershaft 51, a pulley 52a to i or 53a to i attached (Fig. 2). According to FIG. 1, a pair of belts 54 a to i are placed around each pair of these pulleys, of which only one belt 54 a in the lower floor and one belt 54 e in the upper floor are shown in FIGS. 2 and 3. Each belt 54 carries a carriage 55a-i with a respective driver 56a-i and one yarn guide bar 32a-i, wherein in the lower floor the carriages 55a-d are attached to the upper run of the belts 54a-d and the drivers 56a _; to d upwardly project, while in the upper floor, the carriages 55e-i are attached to the lower run of the belts 54e-i and the drivers 56e-i project downwardly, resulting in a space-saving arrangement.

Finally, it can be seen from Fig. 4 that the carriages 55a-d, and with them the pulleys 52 and 53, respectively, of the lower tier are juxtaposed, respectively, between a front frame member 59 and a rear frame member 60. are staggered in the axial direction of the associated waves. The same applies to the upper floor of the 'carriages' 55' to 551. The carriers 56a to i attached to them are each bent towards the center of the machine frame 26 so that the yarn guide bars 32a to i supported by them are tight are arranged side by side and worn by them yarn guide 33 can be arranged in the usual manner, as required for insertion of the threads.

FIG. 4 also shows that, in a preferred embodiment of the invention, each carriage 55, unlike FIGS. 3 to 3, is guided by two guide rods 62 a to i and 63 a to i. In this case, the guide rods 62 consist of round rods, which are arranged in corresponding holes of the carriage 55. In contrast, the guide rods are made of flat iron, each in a front or rear

Recess of the carriage 55 engage. In this case, in order to save space, the guide rods 63 are used by two carriages 55, as indicated in Fig. 4, for example, for the guide rod 63b, which projects into a respective front and rear recess of the carriage 55b and 55c. The additional guide rod 63 results in a space-saving, tilt-free guide for the carriage 55th

Finally, FIG. 4 shows, as a section of FIG. 3, the servomotor 49i, which drives the non-visible drive shaft 51i via a countershaft 65, furthermore the countershaft 51f with the pulley 53f for the carriage 55f, the servomotor 49d, which has a countershaft 66 drives the drive shaft 50d with the pulley 52d, and the countershaft 47 with the pulley 40 for driving the carriage 42 which carries the Kulierkurvenstab 30. The shafts 51f and 50d, like the other shafts, are each rotatably mounted in the front and rear frame parts 59, 60 by means of ball bearings 67 or the like.

The drive according to the invention facilitates the work on the flat Kulierwirkmaschine (system Cotton) considerably. In this case, each servo motor 49 is assigned a control circuit 18 with a desired value generator 20 and, if applicable, a program control 24 corresponding to FIG.

In the production of smooth, unpolished goods all thread guides are switched off except one. The switched thread guide moves, driven by the servo motor 49, over the. whole or a selected part of the working width back and forth. In this case, no stops, friction brakes, with the main eccentric shaft 35 coupled gear od. Like. Needed, 'since the servo motor 49 comes automatically under the control of the control circuit 13 at the ends of its trajectory to a standstill. The Kulierkurve 30 is reciprocated in a corresponding manner and also independently of the main eccentric shaft. For synchronization of the rotational movements of the

Hauptexzenterwelle 35, it the linear movement of the Kulierkurve and the thread guide can be provided on the Hauptexzenterwelle 35 to provide a rotary encoder in the form of a disc having markers indicating the respective rotational position of the Hauptexzenterwelle and are sampled by a scanner whose output signals of the control circuit 18th , the setpoint generator 20 and / or the program control 24 are supplied to forswitch the set values or the program and to activate the control circuit 18 at the right times by a switching signal "controller enable". Such encoders and the associated circuits are well known from flat and circular knitting machine technology and therefore need not be explained in detail here.

If the working width is constant, the setpoint adjusters 20 need only each. alternately.two, provide Spllwertsignale that correspond to the end positions of the thread guide or the Kulierkurve. If, on the other hand, a fassioned product is to be produced, the program controls 24 must have varying nominal value signals _; deliver, which correspond to the pattern-changing end positions of the thread guide and the 'Kulierkurve-. For this, no other adjustments to the machine are necessary, ie it can account for in particular the previously required adjustments of the stops for the thread guide, and the Kulierkurve and usually very expensive mechanisms for it.

If a striped pattern is to be produced, a blank row must always be provided in conventional felting machines, during which the machine does not act if the thread guide required in the subsequent stitch course is arranged at the wrong end of the needle bar. When using the Kulierwirkmaschine invention, however, only a comparatively short stoppage of the Hauptexzenterwelle is required to transport the wrong standing Kulierkurve to the right end of the needle bar, because their

Movement of the stroke of the main eccentric shaft is independent, and then can continue working immediately. With such a change, therefore, much less time is lost than corresponds to a full course.

The production of intarsia patterns is also simplified because the program controls 24 of each thread guide each have varying setpoint signals for the pattern,. can deliver changing end positions of the thread guide. DA} forth the usual, right- and left-continuous threaded spindles for adjusting the previously required stops are unnecessary. Since these threaded spindles and the controls required for their control are very space-consuming, they have mostly been assigned only to a few selected thread guides. When using the drive according to the invention, however, all yarn guides can be used by intarsia patterning simply by program control. Because of the independence of this drive from the rotational movement of the main eccentric shaft per clock exceptdea comparatively large changes in the end positions of the thread guide can be provided.

J Finally, there are also significant advantages in the production of such checks or intarsia patterns, which consist of chequerboard lined up color patches, but the color within the individual fields can change constantly. So far, one has mostly made use of the fact that the machine stopped after making a full Karoreihe and then either while maintaining the stop positions of the threads guided by the yarn guides - exchanged or changed the attacks while maintaining the thread allocation. When applying the invention, it is only necessary to program the program controls 24 accordingly

" ^: and after completion of a series of Karrei the thread guide to one or the other side to move so far that they are assigned during the production of the next Karoreihe the desired knit area.Also for this purpose the main eccentric shaft must be stopped only for a short time.

The servomotors 1, 37, 46 and 49 according to the invention are operated, for example, at speeds of up to 2000 rpm, which are adjusted to a preselected value by means of the countershaft 4, 65 and 66. be reduced. With these speeds can be easily linear movements of the yarn guide or C \ Kulierkurven of 100 to 120 m / min, produce that. sufficient to allow the weft knitting machine (System Cotton) to operate at a speed of, for example, 100 courses per minute at full working width.

The invention is not limited to the described embodiments. Instead of the illustrated belt. Orders, for example, chain, gear and rack assemblies od. Like. Be provided to the. Rotary movement of the output shafts of the servomotors into .a to convert linear motion of the thread guide and weft curve rods. Apart from that, they are made belt preferential ^ ",, as to prevent slippage of timing belt and the giant:) human yew accordingly toothed pulleys. The ones shown, <set counter can be replaced by any other countershaft. Furthermore, it would be possible to have the belt arrangements od. Like. Act directly on the yarn guide and Kulierkurven and this od displaced on stationary guide rods od. Like. Hin- and.herbewegbar store. Furthermore, other servomotors may be provided instead of the servomotors mentioned, provided that an exact position control is possible with them. Corresponding servomotors can also be used to move the cover bars of possibly existing pattern cover devices. To generate the position set signals, all can do this

In order to determine positional position signals, instead of the actual value generators integrated in the servomotors, other devices may be used, for example those with line grids attached to the guide rods for the carriages Furthermore, the invention can be applied to flat cotton knitting machines (System Cotton) with more than one needle bar and it is also possible to arrange the drive and countershafts differently than shown in FIGS or to arrange on each side of the needle bar each a drive range for the servomotors Finally, a plurality of thread guides or Kulierkurven may be attached to each yarn guide or Kulierkurvenstab which a corresponding plurality of work area are assigned within the needle bar to produce in a known manner on a needle bar next to each other simultaneously a plurality of knitted fabrics.

Claims (1)

Erfindtingsanspruch 1) Flat Kulierwirkmaschine (System Cotton) with at least one needle bar, in which for the purpose of stitching at least one functional element in the form of a thread guide and / or a Kulierkurve between two preselected end positions is reciprocally mounted, and with a drive device for generating the Hin - and reciprocating motion, characterized in that the drive device comprises a servo motor (1) and an electronic control circuit connected thereto (18). 2) Kulierwirkmaschine, according to item 1, characterized dadurchjdaß that a plurality of functional elements (31,33) is provided and the drive device for reciprocating movement of each individual functional element each having a servo motor (46,49) and one associated with this electronic control circuit , 3) profiling machine according to item 1 or 2, characterized by,. that the control circuit (18). a desired value generator (20) for the generation of end position signals, an having a comparator (19) for the final and actual position signals and a comparator (1.9) downstream of the control amplifier (23), which 'affects the' servomotor (1) such that this each upon reaching a preselected End position comes to a standstill. 4) profiling machine according to item 3, characterized in that the control circuit (18) has a the setpoint generator (20) upstream program control (24) for pattern-specific change of the end position signals. 5) knitting machine according to at least one of the items 2 to 4, characterized in that each functional element (31,33) with a belt (41,54) is coupled, the part of a with the servo motor (46,49) coupled belt assembly (38, 48). 6) Kulierwirkmaschine according to item 5, characterized in that the; Belt assemblies (38,48) and servomotors (46,49) of all functional elements (31,33) in a drive region (26) are housed, which is arranged laterally next to the work area (27) comprising the needle bar (28). , 7) Weft knitting machine after point. 6, characterized in that each functional element (31,33) on a parallel to the needle bar displaceable rod (30,32) is fixed, which projects laterally into the drive region (26). 8) Kulierwirkmaschine according to item 7, characterized.dadirch that each belt assembly (38,48) guided on at least one guide rod (62,63), with the associated belt (41,54) coupled carriage (42,55), to the rod (30,32) of the associated functional element (31,33) is fixed. 9) Kulierwirkmaschine after at least one of the points 5 to 8, characterized in that each belt assembly (38, 48) has a drive shaft (44, 50) coupled to the associated servo motor (46, 49) and a loosely rotatable counter shaft (47, 5-1), the pulleys ( 39, 40 or 52, 53) for the belts (41, 54). 10) Kulierwirkmaschine according to item 9, characterized in. That the drive and countershafts (44,50 and 47,51) in several floors each parallel to each other and alternately next to each other, the pulleys (39,40 and 52,53) and Belt (41,54) each floor, however, are arranged offset from each other in the axial direction. 11) Kulierwirkmaschine according to at least one of the points 1 to 10, characterized in that it comprises a rotatably mounted main eccentric shaft (35.), to the drive also a servo motor (37) and a control circuit are provided. 12) Kulierwirkmaschine after at least one of the points 1 to 11, characterized in that it comprises a cover device with deck bars, which are each associated with a servo motor and a control circuit. sätsii drawings