TW201736656A - Textile maschine with uniform thread tension - Google Patents

Abstract

The invention relates to a textile-processing device, having a thread-processing unit for processing a thread that is under tension with varying thread consumption and having a thread-providing apparatus for providing the thread for the thread-processing unit. In said textile-processing device, an air-flow-producing apparatus, which is arranged on a transport path of the thread extending from the thread-providing apparatus to the thread-processing unit, produces an air flow acting on the thread and having a flow direction that has a direction component opposite the thread transport direction and/or a direction component perpendicular to the thread transport direction in order to thereby keep the tension of the thread as constant as possible in the section of the transport path of the thread between the air-flow-producing apparatus and the thread-processing unit.

Description

Loom with uniform tension

FIELD OF THE INVENTION The present invention relates to a loom and a corresponding fabric processing method in which one or more yarns under tension are processed. More particularly, the present invention relates to a loom such as a mattress knitting machine in which the yarn under tension is processed in a variable consumption manner.

BACKGROUND OF THE INVENTION In yarn processing loom, line tension fluctuations can cause inaccuracies or errors in processing which in turn cause errors in the processed fabric article. Reducing the speed at which the yarn is fed into the machine and the resulting processing speed can alleviate this problem, but such reduction is often detrimental as it ultimately reduces machine throughput.

One of the main reasons for the fluctuation of the thread tension may be that the degree of reduction of the yarn on the machined side changes. Typical examples here are weaving machines that work with jacquard technology, in particular weaving machines or weaving machines using jacquard technology. In such a knitting machine, the yarn consumption varies depending on the knit jacquard pattern: if the consumption is reduced, more yarn is temporarily ejected (single yarn or the inertia of the yarn feeder providing the yarn). The wire tension is thus reduced. Depending on the situation, the excess yarn may form a loop which may reach the knit point at a high speed in a whip-like manner under vibration conditions (so-called whip effect). In this case, the needle may no longer be able to capture the yarn, causing errors in the knitting of the produced knitted product. The faster the machine works, the more serious the problem becomes.

The weaving machine (preferably a mattress knitting machine) has a plurality of knitting systems for knitting the front and back sides of the mattress fabric by means of a cylindrical needle and a dial. In addition, the weft yarns can be fed into the knitting system and encased in the resulting knitted fabric. Variations and/or complex patterns are usually provided on the front side of the mattress fabric, which can be achieved by a cylindrical needle electronic jacquard control system. The back is usually simpler or even unpatterned, so the dial needle can be used for support in one of the two knitting systems, while in the next knitting system the needles are mechanically preset or controlled by jacquard. Way to choose. In the case where the cylindrical needle selected by the jacquard control system and the dial needle (so-called EE selection) are irregularly matched, the speed coefficient from about 450 in terms of the appearance of the whip effect (in the exemplary cylinder) A critical value is already obtained for a diameter of 38 inches (about 12 revolutions per minute). In a single needle selection involving only a cylindrical needle (so called E selection), the critical speed coefficient is approximately 750 (in the example case, approximately 20 revolutions per minute). In machines that are fully mechanically selected (for example, so-called mini jacquard machines), the critical speed coefficient is about 1000 or more.

In conventional knitting machines, attempts have been made to alleviate the above problems by providing yarn feeders with yarn brakes and yarn sensors for (possibly under mechanical or electronic control) even when the yarn consumption varies. In the case, the line tension is kept as constant as possible. However, even if the yarn feeder equipped with such a type can only compensate for sudden stress loss in a manner with a certain delay, there may still be problems at a higher processing speed and feed speed, because a whip may still appear. effect.

Other known solutions employ an improved yarn guiding system for preventing jumps from the yarn guide roller in the case of a reduction in the linear tension of the yarn, see for example EP 1 939 340 A1. Mechanical dampers in the yarn extension are also known, for example from the publication DE 297 03 011 U. But even these solutions reach their limits at higher processing speeds and delivery speeds.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a solution that achieves a wire tension that is as constant as possible even at high speeds. In particular, such a solution is used to achieve high-speed fabric processing even in the case of changes in yarn consumption, for example in the case of knitting machines controlled by jacquard, so that knitting products which are produced at high speed are still avoided. Defective products, thus achieving high productivity of the machine.

The fabric processing apparatus defined in claim 1 and the fabric processing method defined in the patent application are used to overcome the above problem by blowing air in one direction in the yarn extension toward the yarn, the direction and the yarn The direction of extension is completely or partially opposite, or perpendicular to the direction in which the yarn extends. The individual items describe preferred embodiments of the invention.

The gas flow can in particular be produced by an air nozzle. Such an air nozzle can, for example, be arranged in the loom such that the yarn extends longitudinally through the air nozzle. In this case, the yarn and the air extend in opposite directions to each other within the air nozzle. However, the air nozzle or another means for generating an air flow may be arranged such that the direction of the air flow is only partially opposite to the direction in which the yarn extends, so that one of the direction components of the air flow is opposite to the direction in which the yarn extends. The direction of the gas flow can also be perpendicular to the direction in which the yarn extends.

The air flow in the opposite direction of the yarn causes the yarn to be tightened on the yarn processing side in a downward direction relative to the air flow means in the direction in which the yarn extends. The yarn ferrule or loop that may be produced by the excess yarn remains on the yarn feed side in the direction in which the yarn extends in the direction of the air flow, and for yarn processing, even at high speeds Achieve uniform line tension.

A corresponding air flow device comprising an air nozzle can also be configured to allow the direction of the air flow to be reversed. The advantage of this solution is that the yarn can be inserted more easily before starting or restarting the operation of the loom by the suction effect produced.

Where the direction of yarn extension and the direction of gas flow are parallel or antiparallel to each other, the gas flow means must be arranged to convey the yarn through the air nozzle for exposure to the reverse flow. Since the compressed air joint is located behind the nozzle, another yarn deflection system may be required between the air nozzle and the knit point or the yarn guide hole leading to the knit point. Therefore, in order to provide the compressed air joint, the necessary common yarn and air flow passage, and another yarn deflection system, it is necessary to be spaced apart from the knitting point by a certain distance.

Therefore, it is preferred to blow air toward the yarn in a direction substantially perpendicular to the direction in which the yarn extends. In this case, an undesired whip effect can be prevented near the knit point; in particular, in the case of a knitting machine controlled by jacquard, the above effect is usually caused by a sudden decrease in the yarn demand at the knitting point, and from there It spreads in the opposite direction to the direction in which the yarn extends.

Another advantage of vertical airflow compared to reverse airflow is that the force transfer to the yarn is improved. Where the yarn has a smooth surface, a greater amount of compressed air is required to transmit the frictional force tangentially to the opposing yarns by the gas stream to maintain uniform tension of the yarn in the event of reduced tension.

Thus, the transverse air flow actuating the yarn and extending at least partially perpendicular to the yarn conveying direction enables a constant line tension at a higher processing speed and in a manner that is as independent as possible from the surface and material properties of the yarn, and The whip effect on the knit point is effectively reduced without overly complicating the layout of the machine elements along the yarn extension. The generation and spread of the whip effect can be prevented directly at the knit point, or at least at the knit point near this point. In the case of high-speed yarn processing with variable yarn consumption, for example, in the case of a knitting machine controlled by a jacquard, it is possible to avoid the occurrence of defective products in the knitted product produced at a higher processing speed, thereby achieving high productivity of the machine. .

The lateral air flow can be generated by an air nozzle provided on one side of the yarn conveying path. On the side opposite the nozzle, a ferrule pick-up port for picking up the yarn ferrule generated when the yarn tension is reduced may be provided. The ferrule pick-up port can be configured as a slit-like opening in a side wall opposite to the air nozzle with respect to the yarn conveying path (wherein the opening can have another shape, such as a circular shape, an elliptical shape, or a rectangular shape) Or square). The nozzle and the ferrule pick-up port can be configured as separate machine components from each other; it can also be two portions of an integrally formed airflow device.

Preferably, the air nozzle is as close as possible to the fabric processing point, in particular (relative to the yarn extension direction) not far from the fabric processing point. Thereby, the air nozzle can be placed in front of the yarn guide opening to the fabric processing point, or at least in front of the final yarn guide or yarn deflecting element which is disposed in front of the yarn guide hole in the yarn conveying path. The air nozzle can also be placed directly in front of the fabric processing point such that the yarn extends to the processing point without deflection. In the case where the direction of the air flow is opposite to the direction in which the yarn extends, it is preferred to arrange the air nozzle 20 mm or less in front of the last guiding device, in particular 15 mm or less, since it has proven to be excellent The tension after the air nozzle (on the machine side) is maintained at a uniform level. It is especially good to use a distance of about 10 mm.

In the case where the airflow direction is transverse to the yarn extending direction, the air nozzle can be supplied with compressed air without any loss without losing valuable space in the extension between the air nozzle and the machining point. It is especially preferred that the center of the nozzle or ferrule pick-up is at a distance from the fabric processing point that is less than 5% of the diameter of the barrel. In the case of a syringe diameter of 38 inches (96.5 cm), it is preferred to use a distance of about 3 cm. The compressed air consumed by the cross-flow nozzle is reduced, but the line tension can be maintained more stably and reliably.

The position of the air nozzle can also be configured to move along the yarn transport path, wherein the air nozzle is for example fixed on a track and is movable on the track. The air nozzle can also be designed to be deflectable, in particular for improved handling or for access to the yarn guide or knitting area. The movement (and/or deflection) of the air nozzle can be controlled manually or automatically. The whip effect and the formation of the loop are at least partially caused by vibration, which may vary with the speed, characteristics and basic tension of the yarn, and, for example, with the distance of the yarn guiding member, so that a position-adjusting air nozzle can The best results in terms of line tension uniformity after the air nozzle are achieved depending on the specific conditions.

In terms of the positionability of the yarn nozzle, further freedom can be employed so that the air nozzle can move not only along the yarn transport path, but also in a plane perpendicular to the yarn transport path, and can be in its axis Rotate up. Different types of air nozzle holders are available for this purpose, which enable such movement and deflection schemes. It is also possible to set or control the precise air ejection direction from a direction perpendicular to the direction in which the yarn extends or even in the direction in which the yarn extends or vice versa.

In the case where the air nozzle is positioned or deflected in such a way as to be removed from the yarn transport path, it can also be used to some extent as another yarn guiding element, wherein the air nozzle is configured such that the yarn is deflected within the air nozzle .

The air ejection of the air nozzle can be constant; however, it can also be manually set or automatically controlled. Both static and dynamic control systems can be used here. The air blasting control system can, for example, cooperate with a control system for jacquard pattern processing. When a plurality of air nozzles are provided in a loom, air ejection can be controlled collectively or individually for each air nozzle.

The gas flow can also pass through the tube of constant or varying diameter rather than through the air nozzle in a manner opposite to the yarn. In principle, it is also possible to blow another non-air fluid towards the yarn, for example another gas or gas mixture, in which an atomized reagent for the surface treatment, dyeing or impregnation of the yarn is provided.

In summary, the air nozzle of the present invention can be applied to various types of loom for processing yarns under a certain tension. It is, for example, a knitting machine, a knitting machine, a weaving machine or a sewing machine, or a machine for rewinding or further conveying the yarn.

A preferred embodiment is a mattress knitting machine having a higher speed coefficient (i.e., a higher circumferential speed of the syringe). Such machines have a plurality of knitting systems comprising corresponding knit points that are knitted in pairs on the front and back sides of the mattress fabric by their cylindrical needles and dials, respectively. It is often desirable to provide a complex or varying knit pattern on the front side of the fabric, so that the interaction of the cylinder needle with the pattern of the dial needle is used herein. Among them (in the E selection and EE selection), the cylindrical needle is electronically selected by the jacquard control system. For the back of the mattress fabric, which is usually simpler or even unpatterned, a simpler knitting technique is sufficient, so the dials are selected mechanically (E-selectively) or electronically (EE-selected). The needle can maintain maximum rotation on one of every two knitting systems. In addition, a weft yarn can be fed into the matte of the mattress fabric on each corresponding pair of knitting systems.

In the knitting system in which the cylinder needle and the needle needle are actively involved in the knitting process, in the case of a high speed coefficient, the mutual cooperation of the cylinder needle and the irregular pattern of the needle needle may cause the occurrence of the whip effect. Increase. The resulting large line tension fluctuations can have a significant negative impact on the knitting process and can only be overcome by reducing the speed factor. Therefore, the speed coefficient of 760 (corresponding to 20 revolutions per minute) has been a critical value for a 38-inch syringe and a mattress knitting machine for electronic jacquard selection only on the syringe. When making a jacquard selection on the syringe and dial, the critical speed factor is 456 (corresponding to 12 revolutions per minute).

With the present invention, the knitting quality of such a mattress knitting machine can be maintained even at a higher speed coefficient (above the above-mentioned critical value). To this end, it is only necessary to provide the air nozzle of the present invention on one of every two knitting systems, i.e., on a knitting system in which the yarn consumption varies greatly due to the mutual cooperation associated with the pattern of the cylinder needle and the needle needle. In a knitting system in which the dial needle is mainly in a revolving manner, the yarn consumption is relatively uniform, so that the air nozzles are not necessarily required here.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a jacquard weaving machine will be described as an example of a fabric processing apparatus and method of the present invention, with reference to the accompanying drawings.

In the weaving machine, the yarn is fed from the yarn supplying device to the rotary knitting tool holder, and the knitting tool is used as the stitch forming member to process the yarn at the knitting point corresponding to the yarn. Among them, the yarn is processed under tension, and in particular, in the case of a jacquard knitting machine having a variable yarn consumption, a positive yarn supplying device or a yarn feeder is used for processing, and the yarn is supplied without sliding.

Figure 1 shows the yarn F in the jacquard weaving machine of the present invention, starting from the yarn feeder 3, passing through one or more yarn guiding members 5 and finally passing through the yarn feeding holes of the yarn guiding device to the knitting point. The yarn feeder takes the yarn from the yarn bobbin and temporarily stores it on the yarn storage wheel 3d. The yarn is then machined at the knit point by a knitting tool provided on the rotary stand to form a stitch. In the present embodiment, the knitting needle is disposed horizontally on the dial and vertically on the barrel.

In order to machine the yarn at the knitting point, on the one hand, the tension should be as uniform as possible; on the other hand, in the case of a jacquard knitting machine, the yarn consumption on the knitting point varies, depending on the selected jacquard pattern. . Achieving a constant or at least uniform line tension is particularly demanding in the case of variable yarn consumption, which is achieved in the present embodiment by the yarn feeder 3 and the air nozzle 1.

The yarn feeder 3 is provided with a yarn brake 3a and a yarn take-up sensor 3b, 3c for adjusting the thread tension and ensuring that no excessive yarn is subsequently ejected even if the yarn consumption is suddenly lowered. However, at higher feed speeds and processing speeds, the yarn feeder will reach its limit; due to the inertia of the yarn feeder, especially the inertia of its rotary yarn storage wheel, a sudden reduction in yarn consumption may result in Subsequent injection of too much yarn. The consequence is an instantaneous loss of thread tension and may result in loops that wrap to the knit point or whip, which ultimately leads to knitting errors.

In order to achieve a uniform thread tension even in such a situation, and to achieve reliable processing even at a high speed, in the first embodiment of the invention, an air nozzle 1 is provided which is further downward in the direction in which the yarn extends. The way is set before the knitting point. As shown in Figures 2 to 4, this air nozzle 1 is mounted on a specially provided holder 2.

5 and 6 show the air nozzle 1 of the first embodiment more precisely. It has an air inlet 1c and an air outlet 1a which serves as a yarn introduction port at the same time. The yarn F passes through the air nozzle through a linear yarn passage from the yarn introduction port 1a to the yarn outlet port 1b which is also provided. Air enters the air flow passage from the air inlet 1c in the air nozzle 1, and the air flow passage is bent into the yarn passage, so that the portion of the yarn passage from the curved portion to the air outlet and the yarn introduction port is simultaneously used as Air flow channel and yarn channel. At the center of this shared passage portion, the yarn F is guided in the opposite direction to the air flow as indicated by the corresponding arrow in Fig. 5. The air flow exerts a force against the yarn conveying direction by friction on the surface of the yarn it meets.

If there is a sudden loss of linear tension that cannot be compensated fast enough by the yarn brake of the yarn feeder (for example due to reduced yarn consumption at the knitting point), the air nozzle ensures that excess yarn remains in the air nozzle 1 The yarn feeding side (i.e., the side of the yarn introduction opening 1a). On the yarn processing side of the air nozzle 1 (i.e., the side of the yarn guide opening 1b), the frictional force applied to the yarn by the air flow of the air nozzle maintains a thread tension sufficient to achieve a reliable knitting process. The level of the line tension maintained can be adjusted by the air flow intensity and by the design and positioning of the air nozzle such that it is as uniform as possible and sufficient for the corresponding processing.

As shown in Fig. 5, the diameter of the passage portion of the yarn shared with the air flow is tapered toward the yarn introduction opening and the air outlet 1a to increase the air flow speed, thereby increasing the frictional force acting on the yarn at the opening. However, in the case where the air nozzle is capable of obtaining a desired degree of line tension, the diameter of the air flow passage in the air nozzle can also be made constant (or even widened). In addition, other nozzle forms may be used in this embodiment, or even an open fan, such that air is blown or reaches the yarn, thereby applying a frictional force against the direction of the yarn to the surface of the yarn (including Reversed to the positive direction component of the yarn extension direction).

7 and 8 show the mounting of the air nozzle 1 on the air nozzle holder 2. As shown, the air nozzle is supported by a rotatable screw-on shank and two plates which are provided with elongated holes and which are also screwed so as not only along the direction of the yarn The free and flexible deflection and positioning of the air nozzle is also allowed in a plane perpendicular to the direction. The retaining members shown in Figures 7 and 8 are merely examples: other designs of the retaining members may be used, which selectively have full or limited (e.g., only along the direction in which the yarn extends), or may be used. A holder in which the air nozzle is held in a fixed position.

Before entering the yarn feed opening 6 of the yarn guide, the yarn can pass through one or more yarn guiding or deflecting elements 5 which change the direction of yarn extension from its path from the yarn feeder 3 towards the knitting point. In the present embodiment, such a yarn guiding member 5 is disposed between the air nozzle 1 and the yarn feeding hole 6 leading to the knitting point. Such a yarn guiding element may be part of the yarn guide or may be mounted separately from the yarn guide. Preferably, the air nozzle 1 and the last such yarn guiding member 5 are spaced apart from each other by a small distance, for example 10 mm, in the direction in which the yarn extends. However, the air nozzle itself can also be used as the sole or additional yarn guiding element, for example in the case where the air nozzle is removed from the original yarn extension path and the yarn changes its course as it traverses the air nozzle.

In this embodiment, another function of the air nozzle that can be controlled accordingly can be the reversibility of the airflow. The advantage of this solution is that a suction action is formed on the yarn introduction opening which simplifies the manual insertion of the yarn during the operation of starting or restarting the knitting machine.

Next, a second embodiment will be described with reference to Figs. 9 to 14, in which the air nozzle 1 is provided with a ferrule pick-up port which is disposed in front of the knitting point in the yarn extending direction and is also used to maintain uniformity. The thread tension ensures reliable machining even at high speeds.

9 and 10 are a perspective view and a side view of the air nozzle 1. The yarn passes through the air nozzle from a yarn introduction port 1a to a yarn outlet port 1b which is also provided (see Fig. 10). Vertically to the yarn passage, the air nozzle 1 has an air inlet 1c (see Fig. 10) and a slit-like ferrule pick-up port 1d which serves as an air outlet at the same time. The airflow exerts a force on the yarn perpendicular to the direction of yarn transport by friction on the surface of the yarn passing over it.

If there is a sudden loss of wire tension that cannot be compensated fast enough by the yarn brake of the yarn feeder (for example due to reduced yarn consumption at the knitting point), the air nozzle ensures that the excess yarn is at the ferrule pick-up A ferrule opposite the air nozzle is formed in 1d. On the yarn processing side of the air nozzle 1 (i.e., the side of the yarn guide opening 1b), the frictional force applied to the yarn by the air flow of the air nozzle maintains a thread tension sufficient to achieve a reliable knitting process. The level of tension maintained can be adjusted as much as possible by the airflow strength and by the design and positioning of the air nozzle and the ferrule pick-up port, so that it is as uniform as possible and sufficient for the corresponding machining. The airflow reaches the yarn vertically, so the relationship between the force ultimately transmitted by the airflow to the yarn and the material and surface characteristics of the yarn is reduced as compared to the case where the airflow is opposite to the direction in which the yarn extends.

In the present embodiment, the yarn may also pass through one or more directions for changing the direction in which the yarn extends in the path from the yarn feeder 3 toward the knitting point before entering the yarn feeding hole of the yarn guide. Yarn or deflection element 5. Preferably, however, the distance between the air nozzle 1 and the knit point is as small as possible, for example less than 5% of the diameter of the barrel, for example 3 cm when using a diameter of 38 inches (96.5 cm).

In this embodiment, the direction of the air flow relative to the direction in which the yarn extends may also vary. For example, the extending direction can be set to an angle shifted by 90° with respect to the yarn extending direction.

In the first and second embodiments, the air supply to the air nozzles can be implemented to be controllable so that the air flow can be adjusted according to the respective requirements, such as depending on the characteristics of the yarn, the feed speed and the basic tension. And yarn guides in the knitting machine. The air supply to the air nozzle can also be controlled in conjunction with the jacquard control system of the knitting machine, wherein the air flow is automatically increased, for example, if a reduction in yarn consumption is foreseen in accordance with the jacquard control system. Thereby, the air nozzle can provide a tension compensation adjusted according to current needs at any time.

The weaving loom generally has a plurality of knit points each containing its own yarn feeding system (only one of which is exemplarily shown). All or only a plurality of knitting points may be provided with the air nozzles described in the two embodiments above. The air supply of the air nozzle, the control of the air flow, and the positioning of the air nozzle can be designed separately or jointly for each knitting point.

The present invention is particularly concerned with a loom suitable for double-knit (Double-Jersey-Stricken) including a rotary dial in addition to a rotary cylinder. Fig. 11 shows a knitting system on a knitting point of such a machine (herein, an air nozzle according to a second embodiment of the present invention is employed). The interaction of the vertically disposed cylindrical needle 7 with the horizontal dial needle 8 determines the current yarn consumption. If the pattern is produced electronically in the pattern using the jacquard technique, the needle is selected electronically, for example, only the cylinder needle (E selection) is selected, or both the cylinder needle and the needle needle (EE selection) are selected, the current yarn consumption Will change significantly. In the case where the yarn consumption is suddenly reduced, the air flow from the air nozzle 1 ensures that the excess yarn forms a loop in the ferrule pick-up port 1d, and the excessive reduction of the thread tension on the knitting point is avoided, or at least Something has eased.

When knitting a mattress fabric, the front side of the fabric is often patterned to maintain the simple back structure of the braid. Therefore, in a corresponding knitting machine for a mattress fabric, at least a cylinder needle using a jacquard technique (for example, selected by an electronic single needle) is selected for the patterning of the front side, and the needle needle is selected electronically or mechanically. The rotation is generally maintained on one of every two knit points. Figure 12 is a transient display of the position of the cylindrical needle 7 and the dial needle 8 at such a knitting point: the cylindrical needles are individually selected, and the dial needle is also involved in the knitting process (either through the electronic single needle selection, or through Mechanical pre-selection to control). The yarn consumption on these systems varies significantly due to the interaction of the cylinder needles with the pattern of the needles. In this case, the maintenance of the wire tension can be remarkably improved by providing the air nozzle of the present invention (for example, according to the first or second embodiment).

On the other side, the knitting process is simpler and more uniform on a knitting system where the dial needle is primarily in rotation. Figure 13 is a transient display of the needle position on such a system: the cylinder needle is knitted separately here, while the dial needle remains rotated. In this case, the yarn consumption fluctuation is reduced. Therefore, it is no longer necessary to equip the knitting system of the present invention with the air nozzle (and the corresponding air supply system).

Figure 14 shows a pair of knitting systems of the mattress knitting machine of the present invention, wherein the knitting system on the right side is provided with an air nozzle 1 (here according to the second embodiment), and the knitting system on the left side does not have such an air nozzle. In addition, a weft yarn S is fed between the two knitting systems, which (as is common with mattress fabrics) is placed into the resulting knitted fabric at or between the knitting points.

The above advantages in the practice of the invention in a mattress knitting machine are also applicable to other knitting machines having a plurality of knitting systems, wherein the processing of the front and back faces different requirements for compensation of the thread tension fluctuation.

The above embodiment describes a jacquard weaving machine. However, the above nozzles can also be applied to other weaving machines that process or only transport a yarn (or yarns) under tension. In the loom where the yarn consumption is constant, the maintenance by the air nozzle and the improvement of the uniformity of the thread tension are also advantageous; but the advantages of these advantages are that the air nozzle can be caused by the change in the yarn consumption. The line tension loss is compensated. Examples of weaving machines to which the present invention is applicable are knitting machines, knitting machines, looms or sewing machines, and machines for rewinding or further conveying yarns.

A particularly preferred embodiment of the present invention relates to a mattress knitting machine comprising an electronic yarn feeder and 60 knitting systems (knit points), one of each of the knitting systems being provided according to a second The air nozzle and ferrule pick-up port of the embodiment. With a syringe diameter of 38 inches (96.5 cm) and a circumferential speed of 30 rpm, the speed factor is 1140. On all systems, the cylinder needle is individually selected electronically and the dial needle is selected mechanically (E selection). These airless nozzle systems use the dial needle only for support, while on adjacent systems, the jacquard controlled cylinder needle and the dial needle participate in the knitting process. Therefore, the system is equipped with an air nozzle and a ferrule pick-up port. Due to the higher speed, higher acceleration values can be detected on the yarn. The air nozzles and ferrule pick-up ports of the present invention have proven to be particularly helpful in avoiding the whip effect and ensuring that the machine operates reliably and efficiently.

1‧‧‧Air nozzle
1a‧‧‧Yarn introduction
1b‧‧‧Yarn export
1c‧‧‧air inlet
1d‧‧‧Ring pick-up
2‧‧‧Air nozzle pick-up
3‧‧‧ yarn feeder
3a‧‧‧Yarn brake
3b‧‧‧Yarn introduction sensor
3c‧‧‧Yarn Export Sensor
3d‧‧‧Yarn storage wheel
4‧‧‧Knitting tools
5‧‧‧Guide components
6‧‧‧Yarn feed hole
7‧‧‧ cylinder needle
8‧‧‧needle needle
F‧‧‧Yarn
S‧‧‧ Weft

The invention will now be described in detail with reference to the accompanying drawings. 1 is a side view of a knitting machine of the present invention; FIG. 2 is a perspective view of an area of an air nozzle, a yarn guide and a knitting needle of the knitting machine according to the first embodiment; FIG. 3 is the same area of the knitting machine Figure 4 is a perspective view of the air nozzle and the yarn guide of the knitting machine; Figure 5 is a cross-sectional view of the air nozzle according to the first embodiment; Figure 6 is a perspective view of the air nozzle; 7 is a perspective view of an air nozzle in conjunction with an air nozzle holder; FIG. 8 is another perspective view of the air nozzle in conjunction with the air nozzle holder according to the first embodiment; Fig. 10 is a side view of an air nozzle according to a second embodiment; Fig. 11 is a perspective view of a knitting system including a working air nozzle and a cylinder needle and a dial needle; a transient display of the position of the needle on a knitting point, wherein the cylinder needle and the needle of the needle are knitted; FIG. 13 is a transient display of the position of the needle on a knitting point, wherein the cylinder needle is knitted, and the needle of the needle is kept rotated; And Figure 14 is the root The second embodiment comprises a perspective view of the weft yarn fed to the knitting system knitting machine, one system of the mattress.

1‧‧‧Air nozzle

2‧‧‧Air nozzle holder

3‧‧‧ yarn feeder

3a‧‧‧Yarn brake

3b‧‧‧Yarn introduction sensor

3c‧‧‧Yarn Export Sensor

3d‧‧‧Yarn storage wheel

5‧‧‧Guide components

F‧‧‧Yarn

Claims (31)

A fabric processing apparatus comprising a yarn processing unit for processing a yarn under tension in a variable yarn consumption manner, and a yarn supplying device for supplying yarn to the yarn processing unit And a gas flow generating device disposed on the conveying path of the yarn extending from the yarn supplying device to the yarn processing unit, and is provided to generate a flow of the first yarn Flowing a zone having a component in the opposite direction to the yarn conveying direction and/or a direction component perpendicular to the yarn conveying direction to position the yarn in a conveying path between the airflow generating device and the yarn processing unit The yarn tension in the segment is kept as constant as possible. A fabric processing apparatus according to claim 1, wherein the flow direction of the air current generated by the air flow generating means has a direction component opposite to the yarn conveying direction, and preferably extends in a substantially parallel and opposite manner to the yarn conveying direction. . The fabric processing device of claim 1 or 2, wherein the airflow generating device is an air nozzle concentrically disposed around a conveying path of the yarn, wherein the airflow is ejected through a nozzle opening, and the yarn is transmitted through the nozzle opening On its transport, it is fed into the interior of the nozzle. The fabric processing device of claim 3, wherein the air nozzle further has another opening through which the yarn is transported out of the interior of the nozzle in its conveying path, and has a Air inlet to the air. A fabric processing apparatus according to any one of the preceding claims, wherein the airflow generating means is configured to reverse the direction of the airflow. The fabric processing apparatus of claim 1, wherein the flow direction of the airflow generated by the airflow generating means has a direction component perpendicular to the yarn conveying direction, and preferably extends substantially perpendicular to the yarn conveying direction for the conveyance In the case where the yarn tension in the section between the airflow generating means and the yarn processing unit is lowered, a yarn ferrule is formed laterally to the yarn conveying direction. The fabric processing device of claim 6, wherein the airflow generating device comprises: an air nozzle disposed on one side of the yarn conveying path for generating an air flow, and a opposite side of the yarn conveying path The upper ferrule pick-up port is used to pick up the yarn ferrule that is produced when the yarn tension is lowered. The fabric processing device of claim 7, wherein the ferrule pick-up port has an opening in a side wall opposite to the air nozzle relative to the yarn transport path, wherein the opening is preferably slit-like, elliptical, or circular , rectangular or square, and wherein the airflow generating device is preferably integrally formed with the airflow nozzle and the ferrule pick-up port. A fabric processing apparatus according to any one of claims 3 to 8, further comprising an air nozzle holder on which the air nozzle is mounted such that the air nozzle is movable in different spatial directions and rotatable in its axial direction . A fabric processing apparatus according to any one of the preceding claims, wherein the airflow generating means is disposed in such a manner as to be movable along the yarn conveying path. A fabric processing apparatus according to any one of the preceding claims, further comprising at least one yarn guiding or yarn deflecting element disposed on a conveying path of the yarn between the yarn supplying device and the yarn processing unit, wherein The airflow generating means is provided before or after the last yarn guiding or yarn deflecting element in the yarn conveying path with respect to the yarn conveying direction. A fabric processing apparatus according to claim 11, wherein the airflow generating means is spaced apart from the last yarn guide or yarn deflecting member on the yarn transport path by 20 mm or less, preferably 15 mm or less, and more preferably about 10 mm. A fabric processing apparatus according to any of the preceding claims, further comprising an air nozzle control system configured to control the flow of the airflow generating means, preferably in conjunction with or in accordance with a control system for fabric processing. A fabric processing apparatus according to any one of the preceding claims, wherein the yarn providing device is a yarn feeder having its own yarn brake and/or thread tension adjusting device. A fabric processing apparatus according to any one of the preceding claims, which is a weaving machine, preferably a weaving machine for a mattress knitting machine for knitting a mattress fabric. A loom as claimed in claim 15 comprising a rotary cylinder and a plurality of knitting systems disposed about the cylinder, wherein on all of the knitting systems, or only some of the knitting systems, preferably in every two One of the knitting systems is provided with an air flow generating device. The weaving machine of claim 16, wherein the knitting machine is equipped with an air flow generating device, or is independently selected electronically by a jacquard technique, or the needle of the syringe is selected by mechanical preset means. The loom of claim 17, wherein the needle of the syringe is selected electronically on the knitting system to which the airflow generating device is not provided, or is also selected electronically by a jacquard technique. A loom as claimed in claim 17 or 18, further comprising a rotary dial carrying a dial needle, wherein the knitting system is provided with the airflow generating means, or is also electronically selected by a jacquard technique Or select the dial needle of the dial in a mechanical preselection manner. A loom as claimed in any one of claims 17 to 19, further comprising a rotary dial carrying a dial needle, wherein the dial needle of the dial remains rotated on a knitting system not provided with an air flow generating means. A loom as claimed in any one of claims 15 to 20, further comprising a weft feeding system for feeding a weft yarn to be placed in the knitted fabric. A loom as claimed in any one of claims 19 to 21, which is suitable for processing speeds having a speed coefficient of at least 400, preferably at least 500, and particularly preferably at least 600, in the case of electronic single needle selection on the syringe and dial Suitable for processing speeds with a speed coefficient of at least 700, preferably at least 800, and especially preferably at least 900, in the case of electronic single needle selection only on the syringe, and mechanical preset selection on the syringe and dial The case is applicable to a processing speed having a speed coefficient of at least 1000, preferably at least 1100, and particularly preferably at least 1200. A fabric processing apparatus according to any one of claims 1 to 14, which is a knitting machine, a knitting machine, a loom or a sewing machine, or a machine for rewinding or further conveying the yarn. A fabric processing method comprising the steps of: conveying a yarn under tension from a yarn supplying device to a yarn processing unit; and applying the yarn to the yarn processing unit in a variable yarn consumption manner Processing the wire, wherein a flow of the yarn from the yarn providing device to the yarn processing unit is blown to the yarn, wherein the gas stream has a first-class orientation, and the yarn has a yarn The direction component of the opposite direction of transport and/or a directional component perpendicular to the direction of transport of the yarn is maintained to maintain the tension of the yarn on the yarn processing unit at a level that is as constant as possible. The fabric processing method of claim 24, wherein the flow of the gas stream directed to the yarn has a component in a direction opposite to the direction in which the yarn is conveyed, and preferably extends in a substantially parallel and opposite manner to the yarn conveying direction. The fabric processing method of claim 24, wherein the flow direction of the air stream directed to the yarn has a direction component perpendicular to the yarn conveying direction, and preferably extends substantially perpendicular to the yarn conveying direction so as to be at the yarn In the case where the tension of the yarn on the processing unit is lowered, a yarn ferrule is formed sideways in the direction in which the yarn is conveyed. A fabric processing method according to any one of claims 24 to 26, wherein a plurality of yarns of a plurality of knitting systems disposed around a rotary cylinder are machined into a knitted fabric, wherein on all knitting systems, or only In some of the knitting systems, preferably one of each of the two knitting systems blows a stream of air to the corresponding yarn. The fabric processing method of claim 27, wherein the needle is selected electronically on the knitting system or by a jacquard technique, or the needle of the syringe is selected in a mechanically preset manner, wherein all of the air is blown toward On the knitting system of the yarn, and on all knitting systems that do not blow the airflow into the yarn, the needle selection is the same. The fabric processing method of claim 28, wherein the knitting needle is selected electronically on each knitting system or by a jacquard technique, or a dial of a rotary dial is selected in a mechanically preset manner, wherein When the airflow is not blown onto the knitting system of the yarn, the dial needles preferably remain rotated. A fabric processing method according to any one of claims 27 to 29, wherein a weft yarn is fed into each knitting system and placed in the knitted fabric. In the fabric processing method of claim 29 or 30, in the case of performing electronic single needle selection on the syringe and the dial, a speed coefficient of at least 400, preferably at least 500, and particularly preferably at least 600 corresponding to the processing speed is used. Using a speed factor of at least 700, preferably at least 800, and particularly preferably at least 900 in the case of electronic single needle selection on the syringe, and at least 1000 in the case of mechanically preselecting the needle on the syringe and dial Preferably, a speed factor of at least 1100, particularly preferably at least 1200.