WO2006119717A1

WO2006119717A1 - Circular knitting machine with a device for knitwork wide drawing-off

Info

Publication number: WO2006119717A1
Application number: PCT/CZ2006/000031
Authority: WO
Inventors: Josef Vaculik; Frantisek Piskula
Original assignee: Amtek, Spol. S.R.O.
Priority date: 2005-05-11
Filing date: 2006-05-09
Publication date: 2006-11-16
Also published as: EP1888828A1; TW200809029A

Abstract

The invention relates to the circular knitting machine with a device for a wide drawing-off the knitwork containing at least two driven take up rollers (2), between which the tubular knitwork is compressed and is drawn off through expander (10) from knitting means of the machine, while above the take up rollers (2) in the area of one end of the expander (10) there is situated the device for longitudinal cutting of the tubular knitwork (1), and under the take up rollers (2) there are situated the opening bars (4) arranged in a ,,V' position for opening the longitudinally cut knitwork to the full width, while in the direction of the knitwork movement behind the opening bars (4) there are arranged the expanding and/or draw and/or guiding and/or winding means of the knitwork in the full width. The take up rollers (2) on the side being opposite towards the side above which the device for longitudinal cutting of the tubular knitwork is situated, are provided with the local circumferential interruption of their drawing-off surface, while this local interruption is arranged under the second end of the expander (10) and above the peak of the opening bars (4).

Description

Circular knitting machine with a device for knitwork wide drawing-off

Technical field

The invention relates to the circular knitting machine with a device for a wide drawing-off the knitwork containing at least two driven take up rollers, between which the tubular knitwork is compressed and is drawn off through expander from knitting means of the machine, while above the take up rollers in the area of one end of the expander there is situated the device for longitudinal cutting of the tubular knitwork, and under the take up rollers there are situated the opening bars arranged in a ,,V" position for opening the longitudinally cut knitwork to the full width, while in the direction of the knitwork movement behind the opening bars there are arranged the expanding and/or draw and/or guiding and/o winding means of the knitwork in the full width.

Background art

There are well-known the circular knitting machines that produce the tubular knitwork on the needle beds in a known manner. This knitwork is after then stretched by means of an expander into a flat closed shape and in a form of flat tube it is compressed by the parallel take up rollers of the take up system, and it is drawn off by these rollers from the knitting system of the machine and it is wound on the winding rod by means of the pressure and/or winding roller. After the winding is finished and a sufficient length of tubular knitwork is produced, the winding rod with package of tubular knitwork is removed from the machine, the knitwork, during modification or after the modification outside the machine, is being cut longitudinally, is being expanded to the full width, in which it is, thanks to fixation of the full width, wound into the shape of pack of finished knitwork in the full width for further processing.

This traditional procedures has a substantial disadvantage at the production of knitwork containing elastic, e.g. elastan fibre. In the places where the tubular knitwork, during drawing-off and winding in the tubular shape, is folded there is created a fold (folding) which cannot be after then removed from the knitwork in any manner, thus deteriorating the knitwork partially.

This disadvantage is being remedied for example by the method and the machine working according to this method which is described in the publication EP 0 456 576 B1. According to this method the tubular knitwork by means of the expander and the parallel rollers is formed at first in principle into a flat tubular shape, then it is cut longitudinally on the side, and under the branch rollers it is opened by means of opening bars arranged into ,,V". The longitudinally cut knitwork after then passes through the system of expanding and take up rollers arranged perpendicularly to the direction of branch rollers and expanding the knitwork to its full width and the knitwork is in its full width drawn-off and wound onto the winding rod.

At present, most of the known machines that are cutting the tubular knitwork and winding the knitwork in its full width work in a manner according to the EP 0 456 576 B1. The parallel branch rollers, as a rule, are not driven, they are free mounted in a rotating manner and there is a gap between them mostly of several centimetres, so that the edges of the flat tubular knitwork are not squeezed thus not creating the undesired fold. The knitwork batch on the winding rod is laying by its own weight on the driving roller and it brings it into the rotating winding motion.

The disadvantage of the method and the machine according to the EP 0 456 576 B1 is that the take up rollers are positioned only after the not driven branch rollers and the non-rotating opening bars, which for the knitwork to be drawn off requires a considerable force to be produced by the take up rollers and also a great number of expanding and take up rollers to reach this force. Another disadvantage is that the tension in the knitwork being wound in the place of winding onto the winding rod is to a certain extent determined by the friction force between the winding roller and knitwork pack, at the same time this force is being increased with increasing weight of the pack and therefore the width of the knitwork being wound is being decreased with increasing diameter of the pack, which is an undesired effect. Another disadvantage is that due to indispensable influence of friction during a passive drawing of the knitwork through the branch rollers and through the opening bars, the tension in the knitwork in the place of its drawing-off from the knitting system is not defined exactly, which negatively affects the knitwork quality.

Further, the EP 0 696 658 A1 publication describes the solution, in which the tubular knitwork is drawn-off by three driven take up rollers, under which in the middle of the width of the flat tubular knitwork there is situated the cutting and under it then the opening device and also a device for winding the knitwork in its full width. Nevertheless this solution does not prevent the fold to be created in the knitwork, as the edges of the knitwork are compressed between the take up rollers. Another disadvantage is also a great installation height, and so this principle was not introduced in a practice.

The solution described in the EP 1 335 056 A1 publication represents a more advanced method and machines according to the EP 0 456 576 B1. The branch rollers between which there is a gap, thus not compressing the tubular knitwork and not creating the fold in the knitwork, are driven here and thanks to the limited embracement by the knitwork, they produce a certain tension acting upon the knitwork, through which they decrease the influence of friction on the opening bars. Due to the gap between the branch rollers and a relatively small angle of embracement by the knitwork, the draw-off force of the branch rollers is not big enough, therefore it is essential after the opening rollers to use another take up rollers in the full width and with a big embracement. This causes that the whole system of take up and expanding rollers is relatively complicated, which is disadvantageous both from the point of view of production costs as well as from the point of view of machine attendance. The specialists know very well that in the sections where the knitwork in the full width leaves the expanding roller, due to its unsymmetrical flexibility the edge is folded up, which causes that the diameter of the knitwork batch increases on its edges and the batch is uneven. Therefore, at most of the practically used solutions, immediately before winding to the batch, the edge is being unfolded by a stream of compressed air. The constant stream of air causes that its consumption is high and also the investment and operational costs are increased. And that is why the users often switch off this unfolding function, which results in the above mentioned disadvantages.

The objective of this invention is to eliminate or at least minimise the disadvantages of the present state of the art.

The principle of invention

The objective of the principle has been reached through the circular knitting machine with a device for wide drawing-off the knitwork, whose principle consists in that the take up rollers, on the side being opposite towards the side above which the device for longitudinal cutting of the tubular knitwork is situated, are provided with the circumferential interruption of their drawing-off surface, while this local interruption is arranged under the second end of the expander and above the peak of the opening bars.

This simply and effectively enables the wide knitwork drawing-off without folds being created in the knitwork, this at the quality and stable drawing-off of the knitwork from the knitting means of the machine.

To improve guiding of the knitwork between the expander and the peak of the opening bars it is advantageous if, at least on a portion of the distance between the second end of the expander and the peak of the opening bars, there is arranged the guiding means, which intervenes into the free space created by the local circumferential interruption of the drawing-off surface of take up rollers. At the same time it is advantageous if the guiding means passes the free space created by the local circumferential interruption of drawing-off surface of take up rollers from the second end of the expander up to the opening bars. It is also advantageous if the second end of the expander and the peak of opening bars are positioned in peripheral areas of local circumferential interruption of the drawing-off surface of take up rollers.

According to one advantageous execution there is in the direction of knitwork motion behind the opening bars situated at least one driven expanding roller equipped with left and right helix for expanding the knitwork to the width, and the winding mechanism of knitwork in the full width contains at lest one driven driving roller positioned on rocking arms and being pressed from the top to the knitwork batch on the winding rod freely mounted in a rotating manner in the structure of the device for a wide drawing-off the knitwork.

At the same time it is advantageous if, in the direction of knitwork motion immediately before the driving roller on the rocking arms carrying the driving roller, the last driven expanding roller is mounted in a rotational manner being equipped with left and right helix for expanding the knitwork to the width and for unfolding the folded edges of the knitwork.

According to another advantageous execution, in the direction of knitwork motion behind the opening bars there is arranged at least one driven expanding roller equipped with the left and right helix for expanding the knitwork to the width and a knitwork winding mechanism in the full width contains at least one driven driving roller which is situated under the knitwork batch on the winding rod freely mounted in a rotation manner in the structure of the device for a wide drawing-off the knitwork, while the knitwork batch is laying on the driving roller which is coupled with the drive.

For running of the device it is advantageous, if the driven rollers are connected to the control device for control to the constant torque.

According to another advantageous execution, the driven rollers are connected to the control device for controlling the speed linearly proportional to the speed of machine with limitation of the torque.

According to further advantageous executions, the driven rollers are individually or in sections coupled with independent electrical drives with electronic equipment.

To eliminate rolling of the knitwork edges before being wound onto the winding rod, it is advantageous, if in the direction of knitwork motion after the opening bars and immediately before the winding mechanism and/or before the last expanding roller in the area of passage of each of knitwork edges, at least one mechanical expanding component is positioned for unfolding the folded edge of the knitwork before being wound onto the knitwork batch. At the same time it is advantageous, if the mechanical expanding component is created either by the standard expander for looms and/or if it is created by at least one component with at least one edge laying in the knitwork plane and being oriented askew to the centre of the knitwork against the direction of the knitwork motion and touching the knitwork.

To improve the function of the mechanical expanding component it is advantageous, if opposite to the mechanical expanding component on the other side of the knitwork there is arranged the supporting component that has the plane supporting surface running parallel with the knitwork.

According to another advantageous execution the mechanical expanding component is provided with askew oriented grooves and /or longitudinal openings, arranged in the plane touching the knitwork, while the edges created by this plane and by the mentioned grooves and/or openings are oriented askew to the centre of the knitwork in the direction against the knitwork motion.

Description of the drawing The invention is schematically shown in the drawing where the Fig. 1 shows arrangement of an example execution of the circular knitting machine with a device for wide drawing-off the knitwork, the Fig. 1a a detail of a place with local interruption of drawing-off surface of take up rollers, the Fig. 1b shows a detail of one execution of mutual arrangement of the expander, the local interruption of drawing-off surface of take up rollers and peak of expanding bars, the Fig. 2 a view of arrangement from the Fig. 1 in the direction of arrow X, Fig. 2a shows an example execution with guiding roller situated on the swing axis of the rocking arms, the Fig. 2b another example execution with guiding roller on the swing axis of the rocking arms and with an additional expanding roller, the Fig. 2c another example execution with expanding and guiding rollers mounted in the not drawn structure of the device for wide drawing off the knitwork and the knitwork batch laying on the driving roller, the Fig. 3 shows a view of the arrangement from the Fig. 1 in the direction of arrow Y showing detail of the last expanding roller and the driving roller with mechanical expanding components and the Fig. 4 a view of arrangement from the Fig. 1 in the direction of arrow Z showing the detail of the mechanical expanding component with askew arranged openings. Examples of embodiment

The circular knitting machine with a device for knitwork wide drawing-off contains the known not illustrated means for production of the tubular knitwork 1.. The tubular knitwork 1_ is from the not illustrated knitting means of the machine brought in the direction of the A arrow through a suitable expanding device (expander 10), by means of which the tubular knitwork is formed in a known manner first into a shape of oblong or square section and after then into a flat formation, in which it is further brought between the couple of take up rollers 2, that compress the knitwork among each other and by their rotating, through the expander 10, the knitwork is drawn off from knitting means of the circular knitting machine.

On one edge of the knitwork flat formation the take up rollers 2 are provided with local circumferential interruption of their drawing-off surface, e.g. by the circumferential grooves 20, or the drawing-off surface of take up rollers 2 is here locally interrupted by another suitable manner or its diameter is decreased in this place etc. Above this local circumferential interruption of the drawing-off surface of take up rollers 2 one end of the expander IjD is situated, so that through the free space created by the grooves 20 or by another local interruption of drawing-off surface of take up rollers 2 without being compressed by the take up rollers 2 one edge of the flat formation of the tubular knitwork passes, whereby thanks to its elasticity the knitwork has a rounded shape 201 on this edge between the lower rounded end of the expander 10 situated above the take up rollers 2 and the rounded peak of the opening bars 4 situated above the take up rollers 2, so that on this edge of the flat formation of knitwork by passage through the take up rollers 2 the undesired fold is not created, especially at the knitwork with the elastic fibre, e.g. with elastan. In the not illustrated example, the local circumferential interruption of the drawing-off surface of the take up rollers is created to the nearer end of the take up rollers 2.

On the other edge of the knitwork flat formation above the take up rollers 2 there is positioned device for longitudinal cutting the tubular knitwork 1 containing e.g. a suitable knife 3, which on this edge of the knitwork flat formation cuts the tubular knitwork 1 and between the take up rollers 2 two independent edges of the knitwork enter to here, whereby the undesired fold is not created even on this edge of the knitwork flat formation. The take up rollers 2 are created in a suitable manner, e.g. they are integrated with a fixed created circumferential groove 20 or other local interruption around the circumference in the place for one edge of the knitwork flat formation, or the take up rollers 2 are in a known manner provided with a movable segments that are pulled over the carrying rod and that create the drawing-off surface of the take up rollers 2, while the movable segments are arrested in the specified position so that the needed grooves 20 may be created between the neighbouring segments in any place of length of the take up rollers 2 and in any length as the need may be. The take up rollers 2 with grooves 20 or with interruption along circumference may also be created in other suitable manner so that the space for passage of knitwork edge is created and it is not compressed and no fold is created.

The take up rollers 2 are mounted in a rotation manner in the not illustrated structure of the device for knitwork wide drawing-off and they are coupled with a suitable drive, e.g. one of the take up rollers 2 is through its one end coupled with an independent electrical drive 21 and on its second end it is provided with tooth wheel 22, which engages with tooth wheel 22 on the adjacent end of the second take up roller 2. The take up rollers 2 are in the not illustrated example of execution coupled with the drive of the knitting machine or they are coupled with a drive of other components of the device for the knitwork wide drawing-off, etc. In the mentioned not illustrated structure of the device for the knitwork wide drawing-off also other components of this device are positioned and this structure is mounted in a manner known to the specialists in the frame of the machine in a rotation manner around the vertical axis of the machine and connected also in a known manner with the not illustrated arms with the carrier of the cylindrical needle bed and together with the carrier it is rotating around the vertical axis of the machine. The known opening bars 4 arranged into ,,V" are positioned under the take up rollers 2_. The opening bars 4 are situated with their peak under the local interruption of the circumference of the take up rollers 2. The non cut edge of the knitwork flat formation passing the local interruption of circumference of the take up rollers 2 passes over the peak of the opening bars 4, while each of the arms of the knitwork created by cutting the tubular knitwork using the cutting device in a known manner passes over one of the opening bars 4, whereby the originally tubular knitwork 1 after its longitudinal cutting is being opened to the full width. The opening bars 4 may be fixed or rotating around its longitudinal axis, etc. The rotation opening bars may also be coupled with the drive.

As shown in Fig. 1b, between the expander IJD and the peak of the opening bars 4 the guiding means Tl is positioned which improves guiding of the knitwork through a free space created by a local interruption of the drawing- off surface of the take up rollers 2. The guiding means ϋ may quite freely pass through the free space created by the local interruption of the drawing-off surfaces of the take up rollers 2 , or it may pass through it partially only, e.g. it may be positioned on a half of the height of the free space created by the local interruption of the drawing-off surfaces of the take up rollers 2 etc. The guiding means 11. may be created e.g. by a shaped wire or a rod. In the illustrated example of execution the guiding means IJ. is fastened to the expander IjD, but it may be fastened to other element of the whole system, e.g. on the opening bars 4 etc. The guiding means IJ. may be used also in other concrete arrangement of the system expander 10 - the local interruption of drawing-off surfaces of the take up rollers 2 - peak of opening bars 4, than it is shown in the Fig. 1b, which shows the execution in which the edge of the expander IjO and the peak of opening bars 4 are situated in opposite edge areas of local interruption of drawing-off surfaces of the take up rollers 2 or also slightly behind the opposite edges of the local interruption of drawing-off surfaces of the take up rollers 2. In the not illustrated example of execution, the edge of the expander Ij) and peak of opening bars 4 may be situated in the same edge areas of the local interruption of drawing-off surfaces of the take up rollers 2 or even slightly behind the same edges of local interruptions of drawing-off surfaces of the take up rollers 2, while the guiding means is created into an arc shape between edge of the expander 10 situated in such way and the peak of opening bars 4 etc.

The knitwork opened to its full width is transferred from the opening bars 4 through the first expanding roller 5, which it embraces and is further brought to the winding mechanism 6 of full width knitwork. The first expanding roller 5 is mounted in a rotation manner in the structure of device for knitwork wide drawing-off, at the same time it may be coupled with the drive. The first expanding roller 5 on each half of its length on its perimeter is equipped with at least one expanding helix, which upon rotation of the first expanding roller 5 is acting on the knitwork in the direction from the middle portion of the first expanding roller 5 to its ends, whereby the knitwork is held in its full width and the longitudinal rolling of knitwork from edges is eliminated partially. To reach the maximum expanding effect, with advantage the first expanding roller 5 rotates in a circumferential speed being higher than the speed of knitwork drawing-off.

The winding mechanism 6 of full width knitwork in the illustrated example of execution contains moreover the winding rod 60 mounted in rotation manner in structure of the device for knitwork wide drawing-off on which the batch 601 of knitwork is being wound. Alongside the winding rod 60 the driving roller 6J. is mounted in a rotation manner which is seating longitudinally on the surface of the knitwork batch 60J. and which is coupled with a drive and through its rotation drives the knitwork batch 601 and winds the knitwork. In example of execution shown in Fig. 1 , 2, 2a, 2b the driving roller 61. is positioned on rocking arms 62_which enables a smooth change of position of the driving roller 61_ when the diameter of the knitwork batch 601 is increasing through winding the full width of knitwork and also the stability of parameters of driving the knitwork batch 6OJ. , especially stability of circumferential speed of knitwork batch 60J. and the tensile force in the knitwork being wound. In these illustrated examples of execution the wound knitwork passes between the knitwork batch 601 and the driving roller 6_1, while before the driving roller 61_, the last expanding roller 50 is positioned in rotation manner with at least one expanding helix on each half of its length after spreading the knitwork to its width and unfolding of fold up edges of the knitwork. Also the last expanding roller 50 may be coupled with the drive and in an advantageous arrangement it rotates against the direction of the knitwork movement, through which the efficiency of unfolding the knitwork edges is increased considerably. In an advantageous execution shown in Fig. 1 , 2, 2a, 2b the last expanding roller 50 is situated on the rocking arms 62 carrying the driving roller 6JL Thus the constant and short length of knitwork section between the last expanding roller 50 and the knitwork batch 601 is achieved, through which the backward folding up of the knitwork edges is minimised after it leaves the last expanding roller 50. Next to this the tensile force in the knitwork between the last expanding roller 50 and the previous expanding roller presses the driving roller §1 to the knitwork batch 601 which enables to maintain the winding force and thus the width of knitwork batch 601 on a constant value.

Between the first expanding roller 5 and the last expanding roller 50, the additional expanding roller 51_ may be mounted in a rotation manner in the structure of the device for the knitwork wide drawing-off, as shown in Fig. 1 , 2, 2a, 2b, 2c, with at least one expanding helix on each half of its length. Also the additional expanding roller 5J. may be coupled with the drive. In the advantageous example of execution shown in Fig. 2a, on the swing axis of rocking arms 62 there is situated the guiding roller 52, which maintains the angle of embracement of the last expanding roller 50. This guiding roller 52 in the execution according to the Fig. 2b is added by an additional expanding roller 51.

In an example of execution illustrated in the Fig. 2c the winding mechanism 6 may contain the winding rod 60 with knitwork batch 601 laying on the driving roller 61., which is coupled with the drive. At the same time the knitwork in the section between the opening bars and the driving roller is led and expanded by means of system of guiding and expanding rollers 52, 51

In other not illustrated example of execution the machine may be equipped with a different number of expanding rollers while some of them may contain two or even more expanding helixes on each half of their length.

In other not illustrated example of execution the machine contains in the section between the opening bars 4 and winding mechanism 6 also other types of rollers, e.g. hauling, guiding etc., through which it is possible to modify in a more detailed way the characteristics of winding the knitwork in its full width. The individual rollers may be equipped with their own drive or they may be associated into sections of at least two rollers driven by a common drive. According to one advantageous execution the drive of rollers is controlled to constant value of torque. If the rollers are divided into sections, each section of rollers may be controlled to constant value of torque. With advantage, the independent electrical drives with electronic regulation of torque may be used to drive the rollers or sections of rollers. In the example of execution illustrated in Fig. 1 the expanding rollers 5, 50, 5J. and driving roller 6_1 are driven by a chain drive containing the chain 630 driven by the electric drive 63. In the not illustrated example of execution the distribution of torque to individual rollers 5, 50, 51. 52. 61. etc. is executed by other suitable means or it is divided into several branches which may contain even independent engines, etc. In other execution, control of drives of individual rollers and/or individual sections of rollers may be performed with a linear speed and/or position coupling to the speed of machine, this added by limiting of torque.

Another not illustrated example of execution contains the winding mechanism 6 of full width knitwork which is positioned in direction of the knitwork feed just behind the opening bars 4 .

In the direction of knitwork movement, immediately before the winding mechanism of knitwork, there are positioned suitable mechanical expanding components 64 for unfolding of the fold up knitwork edge before its winding into the knitwork batch 60_i on the winding rod 60. These mechanical expanding components 64_may be, as shown in details on the Fig. 3 and 4, created e.g. by the standard expanders 641 for the looms, etc. The mechanical expanding components 64_may also be created of components 642 with at least one edge laying in its principle in the knitwork plane and directed askew to the centre of the knitwork against the direction of knitwork movement and touching the knitwork. To improve function of the mechanical expanding components 64, opposite to the mechanical expanding components 64 on the other side of knitwork there are positioned the supporting elements 643 with a flat supporting surface in principle being parallel with the knitwork. Mechanical expending component 642 may be provided with askew directed grooves and/or longitudinal openings 6421 positioned in the surface touching the knitwork, while the edges 6422 formed by this surface and by the mentioned grooves and/or openings 6421 are directed askew to the centre of the knitwork in the direction against knitwork movement. The mechanical expanding component 64 may also be arranged with two surfaces touching the knitwork from both sides and/or showing only a small distance, so that the knitwork may pass through the created gap, but the repeated folding up the knitwork edge is prevented after it is unfolded by the last expanding roller 50, as shown in the Fig. 2c.

The invention is not limited only to the expressly described or illustrated executions, as in the scope of a common specialised skill, based on the inventive idea contained here, the described and illustrated executions may be modified.

Claims

Patent claims

1. The circular knitting machine with a device for a wide drawing-off the knitwork containing at least two driven take up rollers, between which the tubular knitwork is compressed and is drawn off through expander from knitting means of the machine, while above the take up rollers in the area of one end of the expander there is situated the device for longitudinal cutting of the tubular knitwork, and under the take up rollers there are situated the opening bars arranged in a ,,V" position for opening the longitudinally cut knitwork to the full width, while in the direction of the knitwork movement behind the opening bars there are arranged the expanding and/or draw and/or guiding and/or winding means of the knitwork in the full width, characterised by that the take up rollers (2) on the side being opposite towards the side above which the device for longitudinal cutting of the tubular knitwork is situated, are provided with the local circumferential interruption of their drawing-off surface, while this local interruption is arranged under the second end of the expander (10) and above the peak of the opening bars (4).

2. The circular knitting machine as claimed in the claim 1 , characterised by that, at least on a portion of the distance between the second end of the expander (10) and the peak of the opening bars (4) there is arranged the guiding means (11) which intervenes into the free space created by the local circumferential interruption of the drawing-off surface of take up rollers (2).

3. The circular knitting machine as claimed in the claim 2, characterised by that the guiding means (11) passes the free space created by the local circumferential interruption of drawing-off surface of take up rollers(2) from the second end of the expander (10) up to the peak of opening bars (4).

4. The circular knitting machine as claimed in any of the claims 1 to 3, characterised by that the second end of the expander (10) and the peak of the opening bars (4) are positioned in peripheral areas of local circumferential interruption of the drawing-off surface of take up rollers (2).

5. The circular knitting machine as claimed in any of the claims 1 to 4, characterised by that in the direction of knitwork movement behind the opening bars (4) there is situated at least one driven expanding roller (5, 50, 51) equipped with left and right helix for expanding the knitwork to the width, and the winding mechanism (6) of knitwork in the full width contains at lest one driven driving roller (61) positioned on swinging arms (62) and being pressed from the top to the knitwork batch (601) on the winding rod (60) freely mounted in a rotating manner in the structure of the device for a wide drawing-off the knitwork.

6. The circular knitting machine as claimed in the claim 5, characterised by that in the direction of knitwork motion immediately before the driving roller (61) on the swinging arms (62) carrying the driving roller (61), the last expanding roller (50) is mounted in a rotational manner being equipped with left and right helix for expanding the knitwork to the width and for unfolding the folded edges of the knitwork.

7. The circular knitting machine as claimed in any of the claims 1 to 4, characterised by that in the direction of knitwork movement behind the opening bars (4) there is arranged at least one driven expanding roller (5, 50, 51) equipped with the left and right helix for expanding the knitwork to the width and a knitwork winding mechanism (6) in the full width contains at least one driven driving roller (61) which is situated under the knitwork batch (601) on the winding rod (60) freely mounted in a rotation manner in the structure of the device for a wide drawing-off the knitwork, while the knitwork batch (601) is laying on the driving roller (61) which is coupled with the drive.

8. The circular knitting machine as claimed in any of the claims 1 to 7, characterised by that the driven rollers are connected to the control device for control to the constant torque.

9. The circular knitting machine as claimed in any of the claims 1 to 7, characterised by that the driven rollers are connected to the control device for controlling the speed linearly proportional to the speed of machine with limitation of the torque.

10. The circular knitting machine as claimed in any of the claims 1 to 9, characterised by that the driven rollers are individually coupled with independent electrical drives with electronic equipment.

11. The circular knitting machine as claimed in any of the claims 1 to 9, characterised by that the driven rollers are in sections coupled with independent electrical drives with electronic equipment.

12. The circular knitting machine as claimed in any of the previous claims, characterised by that in the direction of knitwork motion after the opening bars (4) and immediately before the winding mechanism (6) and/or before the last expanding roller (50) in the area of passage of each of knitwork edges, at least one mechanical expanding component (64) is positioned for unfolding the folded edge of the knitwork before being wound onto the knitwork batch (601).

13. The circular knitting machine as claimed in the claim 12, characterised by that the mechanical expanding component (64) is formed by the expander (641) for the looms.

14. The circular knitting machine as claimed in the claim 12, characterised by that the mechanical expanding component (64) is created by at least one component (642) with at least one edge laying in the knitwork plane and being oriented askew to the centre of the knitwork against the direction of the knitwork motion and touching the knitwork.

15. The circular knitting machine as claimed in any of the claims 12 to 14, characterised by that, opposite to the mechanical expanding component (64), on the other side of the knitwork there is arranged the supporting component (643) that has the plane supporting surface running parallel with the knitwork.

16. The circular knitting machine as claimed in any of the claims 12 to

15, characterised by that the mechanical expanding component (64) is provided with askew oriented grooves and /or longitudinal openings (6421), arranged in the plane touching the knitwork, while the edges (6422) created by this plane and by the mentioned grooves and/or openings (6421) are oriented askew to the centre of the knitwork in the direction against the knitwork motion.