CN113195808B - Method for reforming spinning machine and improved spinning machine obtained by said method - Google Patents

Abstract

A method for retrofitting a spinning machine and a spinning machine retrofitted according to said method, to increase the height (h) between the upper and lower ends of the band of balloon areas (a), in order to provide said areas with more than two balloon areas (a), said improved yarn spinning and/or twisting machine having means for feeding (1) a yarn (2) using a conventional upper guide (3), and means for tensioning (4) and winding (5) the yarn (2) onto a lower collection reel (6), said method comprising: the conventional guiding device (3) is eliminated; and incorporating an additional guide appendix (3 ') immediately after the feeding device (1), said additional guide appendix (3') consisting, for example, of a gripper (30) or, optionally, of a roller group (32) with a conveyor belt (33).

Description

Method for reforming spinning machine and improved spinning machine obtained by said method

purpose of invention

As stated in the title of this specification, the present invention relates to a method for retrofitting a yarn twisting machine and/or spinning machine and a yarn twisting machine and/or spinning machine improved according to said method, The advantages and novel features described in detail below are provided and improvements to the prior art are presented for use in connection therewith.

The object of the present invention is a yarn twisting and/or spinning machine modified to perform said yarn twisting and/or spinning by rotating the yarn with a plurality of balloon regions, comprising fittings that increase the height of the zone of the balloon area, i.e. make the gap between the guiding device in the feeding area of the yarn and the twisting device for winding the yarn to the yarn of the pick-up spool The separation distance is increased, therefore, the basic aspect of the invention is a method for retrofitting a yarn twisting machine and/or spinning machine which will utilize only one balloon area by adding an accessory to said machine Yarn twisters and/or spinning machines for spinning and/or twisting processes converted to yarn twisters and/or spinning machines for spinning and/or twisting processes with multiple balloon zones , without modifying the other elements thereof, to increase the height of the balloon area, ie to align the guides in the feed area of the yarn with the twist of said yarn in order to wind it to the take-up spool The separation distance between line devices is increased.

technical field

The field of application of the invention belongs to the industrial field concerned with the manufacture of yarn twisting and/or spinning machines.

Background technique

In the textile industry, especially in the yarn twisting and spinning industry, continuous ring spinning machines, ring twisting machines, multi-twisting machines, two-for-one twisting machines (two-for-one twisting machines) are used. machine), vertical wiring machine (verticalcabling), two-for-one twisting machine (cabling twisting machine), etc.

In order to twist the yarn, all of these machines are forced to rotate the yarn at a distance from the center of rotation to save space taken up by part of the machine, which creates a twisting pattern called a "balloon". The balloon is defined by a volume or zone of revolution having a central axis of rotation, eg, having a conical volume.

In the past, manufacturers of spinning and twisting machines tended to eliminate or reduce balloons by physically confining them in order to avoid an increase in the diameter of the balloon and to minimize the height of the balloon, thereby reducing the For the tension generated in the yarn during twisting and/or spinning and to avoid potential damage to the yarn that could affect its quality and to avoid yarn breakage during production, thus limiting the rotational or angular velocity , and adversely affects productivity.

However, the applicant himself, through his patent WO2017IB52009, discloses a method of yarn twisting and/or spinning to replace a single region with multiple balloon regions to avoid said problem, i.e. a method wherein the yarn is passed through travels between the yarn feeding means (eg at least one spool) towards the yarn picking up means, said yarn picking up and/or winding means being connected to a motor drive means to rotate the yarn winding means at a predetermined speed, Wherein due to the presence of the twisting device a balloon area is created at a point between the feed device and the winding device, in particular it is distinguished in that the rotational speed of the yarn twisting device is such that due to the braking of the twisting device, The trajectory followed by the yarn between the feed device and the pick-up (or wind-up) device produces a helical trajectory that extends over the entire existing distance between the feed device and the yarn pick-up and/or wind-up device has an oscillating helical diameter, in such a way that a body of revolution is produced with at least one hyperbolic structure forming at least two balloon regions continuous with each other, and this can be achieved by means of containing 2 to 20 balloons region structure.

According to the method, the twisting by means of multiple balloon regions counteracts the working tension, so that the tension generated by the twisting device is lower than that generated during conventional spinning and/or twisting, which in turn provides Significant advantage.

In order to increase the number of balloon regions and thus the number of hyperbolic structures, the method of the cited document envisages increasing the height of the zone occupied by the balloon region, preferably so that said height is at least the diameter of the resulting balloon region double.

Furthermore, due to the high cost of machines of this type, in order to apply the method described, the machine is usually modified to increase the separation distance between the guiding means located in the upper part of the balloon area, and the twisting means of the yarn, Below the yarn feed area, the twisting device is used to wind the yarn onto the take-up spool and is located below the balloon area.

The problem is that so far, said improvement is very expensive and difficult to implement, even if it is not as expensive as building a new machine, because it is broadly based on "cutting" the machine's covering yarn guide and the upper element in the area of the feeding device, and by adding elements such as supports or others, such as bridge columns and bridge profiles, the upper element is positioned at a higher position increasing the above-mentioned distance with respect to the twisting device . It should be noted that these machines generally comprise a plurality of parallel elements which simultaneously spin and twist the same plural number of yarns.

The object of the present invention is therefore to develop a machine of improvement to increase the height of the zone occupied by said balloon area by applying a method of carrying out this improvement, which is simpler and easier to carry out, and is therefore more practical and economical than the approach through the systems currently in use.

Contents of the invention

The method for retrofitting a yarn twisting machine and/or spinning machine and the improved yarn twisting machine and/or spinning machine according to said method proposed by the present invention solve all the mentioned problems and in it Significant novelty within the scope of protection, because according to their implementation, the above-mentioned purposes are satisfactory, and their characteristics are conveniently included in the technical solution of the final protection contained in this specification.

More specifically, as mentioned above, the machine proposed by the present invention is a yarn twisting machine and/or spinning machine, which is modified to carry out said yarn by rotating said yarn with multiple balloon regions. The thread twisting and/or spinning process, and for this purpose, differs from the systems currently used, which consist of a set of elements of a raising machine (which feeds the yarn and determines its guiding means) to increasing the height of the zone occupied by the balloon zone, i.e. the separation distance between the guiding device in the yarn feeding zone and the twisting device for winding the yarn to the yarn of the pick-up spool, while the machine of the present invention The same effect can be achieved simply by having an additional guiding attachment, namely by increasing the distance between the guiding device in the feeding area of the yarn and the twisting device which winds said yarn to the take-up bobbin. Separation distance to increase the height of the zone occupied by the balloon region.

Advantageously, said additional guiding attachment replaces the conventional guiding means of the yarn and for example consists of a ring, clamp or similar attachment located at a certain distance above or below the yarn feed drum , which increases the height of the zone of the balloon area to allow twisting of the yarn by forming more than two balloon areas located just below the yarn feed drum or even under the A point above the yarn feed drum to increase the distance between the guide device in the yarn feed area and the twisting device that winds the yarn to the take-up spool by the position of the raising device separation distance between.

Additional attachments can be fixed to the yarn feed drum or to the yarn twister and/or any other fixed part of the spinning machine. As it is an additional attachment, it can be flexibly fixed to the machine without modifying the yarn twister and/or spinning machine.

Thus, in a first variant of embodiment, said additional guide attachment consists of a clamp installed in the machine just at the point where the yarn exits the drum constituting its feed means, said clamp being provided with one or more A yarn guide hook, which guides the yarn at the upper end of the zone of the balloon zone, thus increasing the height of said zone, makes it possible for the more than two balloon zones to exist when the yarn is twisted.

In a second variant of embodiment, the aforementioned additional guiding attachment before twisting the yarn consists of a yarn lifting mechanism, for example a set of rollers optionally connected to a conveyor belt (strip), along which the yarn moves in A loop is formed upon exiting the feed rollers, the set of rollers being placed in such a way that the loop lifts the yarn above the point at which it emerges from the feed before twisting the yarn, thus increasing the air flow. The height of the zone of the loop area is such that when the yarn is twisted, there may be more than two balloon areas. Another example of a yarn lifting mechanism prior to twisting the yarn is through a drum arrangement.

As stated above, the present invention relates to a method of retrofitting a yarn twisting machine and/or spinning machine into the improved machine described above, by increasing the height of the zone covered by the balloon area, i.e. by increasing the yarn guiding means and the separation distance between the twisting devices of said yarn so that they rotate together with a plurality of balloon regions to carry out said yarn twisting and/or spinning process, the method comprises at least the following stages:

- the first stage, removal of the guiding device of the yarn located at a certain distance below the feeding device; and

- second stage, incorporation of an additional guiding accessory placed just behind the yarn feeding device, wherein this additional guiding accessory consists of a clamp or optionally a roller set with a conveyor belt, as before paragraph described.

In such a way, the yarn twister and/or spinning machine is improved by increasing the height of the zone covered by the balloon region so that it has more than two balloons that twist the yarn. loop area, thereby increasing the separation distance between the guiding device in the yarn feeding area and the twisting device that winds the yarn to the take-up spool for this yarn, without the need to lift the This requires a simpler and cheaper modification to the entire group of elements of the device composition, which can also be carried out more quickly and therefore does not affect production.

Finally, it is important to note that a preferred variant of embodiment would be one in which the additional guiding accessory is a yarn lifting mechanism prior to twisting the yarn, which comprises a set of connected drums along which the yarn Running against the set of drums, a loop is formed upon exiting the feed drum, thereby lifting the yarn above the point at which the yarn emerges from the feed device.

In a preferred embodiment, the set of rollers (32) comprises a conveyor belt (33). In this embodiment, when the yarn moves with the conveyor belt, it does not experience any friction and therefore does not deteriorate, at the same time, the production of high-quality fabrics from the yarn has disadvantageous characteristics, because the fabric is due to the Produced by friction of guiding elements such as rings or similar elements.

Optionally, the additional guide attachment (3') comprises means for compacting said wire during its lifting. Compactors are used to reduce fuzz in the final yarn.

For example, compacting devices for yarn are already well known in the conventional art and are incorporated during the final stage of transport of the yarn before spinning and becoming yarn. The compacting means can be mainly of mechanical type or by means of air. We do not discuss the compaction system or device in detail, but we do focus on its place in the novel lifting process of the yarn produced by the present invention.

The described method for retrofitting a yarn twisting machine and/or spinning machine and an improved yarn twisting machine and/or spinning machine according to said method thus constitute a novelty of hitherto unknown character, due to Their purpose, combined with the reasons for their practical use, give a sufficient basis for their claimed exclusivity.

Description of drawings

In order to supplement the above description, and to help better understand the characteristics of the present invention, this description is accompanied by a set of drawings, which are an integral part of this description, wherein the drawings are by way of illustration and not limitation, which show the following content :

Figure 1 shows very schematically a front view of the main elements of the machine area, which intervene in its unmodified example, ie with a single balloon area, to delimit the process of twisting by the yarn The height of the zone of the balloon area formed in ;

Figure 2 also shows a schematic front view of the main elements of the spinning machine modified to include multiple balloon areas according to the prior art;

Figure 3-A shows a schematic front view of the main elements of the spinning machine according to a first variant of embodiment modified, in particular with an additional accessory to include a plurality of balloon areas, the additional The attachment consists of a yarn guide clamp located next to the yarn feed device;

Figure 3-B shows a schematic front view of a spinning machine modified, in particular with additional accessories, to include a plurality of balloon areas according to a further option of the first variant of embodiment, in this case the additional attachment is fixed to the fixed part of the machine; and

Figures 4-A and 4-B show schematic front views of the main elements of the spinning machine according to a second variant of embodiment modified, in particular with additional accessories, to include multiple balloon areas , this additional accessory consists of a set of rollers with a guiding conveyor belt, which lifts the yarn to a point above the yarn feeder; Figures 4-A and 4-B show the arrangement of said set of rollers per location option.

Detailed ways

In view of the above figures, and according to the numbering adopted, in addition to examples of improved machines according to the prior art, there can be seen exemplary and non-limiting examples of twisting and/or spinning machines improved according to the invention The embodiment includes the parts and elements pointed out and described in detail below.

Therefore, Fig. 1 shows very schematically the basic elements of an unmodified conventional ring yarn twister and/or spinning machine, that is to say it has only a single balloon area (a), which basically It consists of the following elements: a yarn (2) feeding device (1), preferably a set of standard rollers; a conventional guiding device (3), which is located at a certain distance below the feeding device (1) and delimited above the the upper end of said balloon area (a); and the twisting device (4) and winding device (5) of said yarn (2) perpendicular to the pick-up spool (6), which is preferably composed of Composed of a tensor rotating around a ring, the twisting device (4) and winding device (5) of said yarn (2) define the lower end of the balloon area (a) and are located above the spindle which will form the The spool (6) is mentioned rather than around the spool to ensure better incorporation of these elements.

Figure 2 shows how, according to the prior art, the improvement of the machine increases the area of the balloon area (a) between the guiding device (3) and the twisting device (4) and winding device (5) The height (h) of the band to obtain more than two balloon regions (a), the method consists of: in fact, raising all the elements located in the upper part of said balloon region (a), namely the yarn (2) Guide device (3) and feeding device (1), without changing their number or structure or configuration, by moving them to a higher position coincident with the appropriate position to obtain The necessary separation height (h) between the twisting device (4) and the winding device (5) to have the required two or more balloon regions (a).

Furthermore, as shown in Fig. 3 and Fig. 4-A, Fig. 4-B, in the machine of the present invention, and according to the method proposed herein, in order to improve the height (h ) to obtain more than two balloon regions (a), it is conceived to replace the conventional guiding device (3) with an additional guiding attachment (3') located exactly at the A point behind the feeding device (1), below or above the feeding device (1).

More specifically, Figure 3 shows how, in a first embodiment option, said additional guide attachment (3') comprises a clamp (30) constituting the machine just at the exit of the yarn (2) The drum of the feeding device (1) is installed in the machine, and the clamp (30) can be equipped with one or more yarn guide hooks (31), the yarn guide hooks (31) in the zone of the balloon area The upper end guides the yarn (2) so as to increase the height (h) of this zone so that the two or more balloon regions (a) can be present when the yarn is twisted.

Figures 4-A and 4-B show how, in a second variant of embodiment (in fact this is the preferred variant), the additional guide attachment (3') consists of a yarn lifting mechanism before twisting, which The yarn lifting mechanism optionally comprises an interconnected set of rollers (32) on which the yarn (2) moves in such a way that said yarn (2) is just exiting the feeder (1) representing the yarn form a loop when the rollers are incorporated here into the set of rollers (32), such that the loop lifts the yarn (2) above the point at which it emerges from the feeder (1), thereby The height (h) of the zone of the balloon area is increased so that when the yarn is twisted, more than two balloon areas (a) can exist.

Preferably, the above-mentioned set of rollers (32) as a preferred variant of the additional guide attachment (3') envisages moving its relative position to keep the yarn (2) between the set of rollers (32) where appropriate Possibilities at one point or another, as shown in Figure 4-A and Figure 4-B.

In a preferred embodiment, the set of drums (32) comprises a conveyor belt (33) which maintains the integrity of the yarn and guides the yarn during lifting of the yarn.

Optionally, the additional guide attachment (3') comprises compacting means of said yarn during lifting of said yarn. The compacting device is used to reduce the fuzz of the yarn, thereby reducing the fuzz of the final yarn.

For example, the compacting means can be mechanical or by means of air.

Therefore, method of the present invention comprises at least:

- a first stage, removal of the conventional guiding means (3) of the yarn (2) at a certain distance below the feeding means (1); and

- a second stage, incorporating an additional guiding attachment (3') consisting of, for example, clamps (30) or a yarn lifting mechanism before twisting the yarn, preferably comprising a set of rollers ( 32), the drum set (32) optionally has a conveyor belt (33), the additional guide attachment (3') is placed just behind the feed device (1) of the yarn so that the additional guide attachment

The distance between (3') and the twisting device (4) and winding device (5) of the yarn (2) determines the height (h) between the upper and lower ends of the zone of the balloon area (a) Increased, this can accommodate more than two balloon regions (a).

Having fully described the nature and mode of implementation of the present invention, it is not necessary to give further explanations to enable those skilled in the art to understand its scope and advantages arising therefrom. The statement is as follows: Within the scope of the present invention, other implementations These implementations are different in details from the example implementations, but as long as the basic principles are not changed, changed or modified, they should be within the protection scope of the present invention.

Claims (11)

1. A method for retrofitting a spinning machine, said spinning machine being a ring spinning machine with a single balloon area (a), said spinning machine comprising: a feed device for a yarn (2) (1); and conventional guiding means (3) located at a distance below said feeding means (1), said conventional guiding means (3) delimiting an upper end of said balloon area (a) above; and the twisting device (4) and the winding device (5) of the yarn (2), said twisting device (4) and said winding device (5) being perpendicular to the pick-up spool (6) and determining said air the lower end of the balloon area (a); the method aims at improving the spinning machine to increase the height (h) between the lower end and the upper end of the zone of the balloon area (a) to obtain two or a plurality of balloon regions (a), characterized in that the method includes at least: - a first stage, removing the conventional guiding means (3) of the yarn (2) at a certain distance below said feeding means (1); and - second stage, incorporating an additional guide attachment (3') placed exactly where the yarn exits the feeder (1) so that the additional guide The distance between the attachment (3') and said twisting device (4) and said winding device (5) of yarn (2) defines the upper and lower ends of the zone of said balloon area (a) The height (h) between increases, which can accommodate more than two balloon regions (a). 2. An improved spinning machine, according to the method for modifying a spinning machine according to claim 1, to increase the height (h) of the zone of the balloon area (a) to have more than two balloons Circle area (a), said improved spinning machine consisting of a ring spinning machine comprising: a feeding device (1) for the yarn (2); and a guiding device, said guiding device defined above the upper end of said balloon area (a); and a twisting device (4) and a winding device (5) of said yarn (2) perpendicular to a pick-up spool (6), said twisting The thread device (4) and the winding device (5) define the lower end of the balloon area (a), characterized in that the improved spinning machine has an additional guide attachment (3') instead of the yarn Said conventional guiding means (3) at a certain distance below said feeding means (1) of thread (2), said additional guiding attachment (3') is located just at the point where said yarn (2) exits At the feed device (1), the additional guide attachment (3') guides the yarn (2) at the upper end of the zone of the balloon area, thereby increasing the Said height (h) is such that when said yarn (2) is twisted, more than two balloon regions (a) may be present. 3. The improved spinning machine according to claim 2, characterized in that said additional guide attachment (3') consists of a clamp (30) exactly at the exit of the yarn (2) Mounted on the spinning machine is a drum constituting the feeding device (1) of the spinning machine itself. 4. Improved spinning machine according to claim 3, characterized in that said clamp (30) constituting said additional guiding attachment (3') is equipped with one or A plurality of yarn guide hooks (31). 5. Improved spinning machine according to claim 3, characterized in that said additional guide attachment (3') before twisting the yarn (2) is constituted by a yarn lifting mechanism. 6. The improved spinning machine according to claim 5, characterized in that the lifting mechanism comprises a set of rollers (32) connected to each other, along which the yarn (2) moves such that the yarn (2) forming a loop just at the point where it exits said set of rollers (32) constituting the feed device (1) for said yarn, incorporating said set of rollers (32) at this point so that said loop way to lift the yarn (2) above the point at which it emerges from the feed device (1), thereby increasing the height (h) of the zone of the balloon area so that when the When the yarn is twisted, two or more balloon regions (a) can exist. 7. The improved spinning machine according to claim 6, characterized in that the set of cylinders (32) is movable in its relative position so as to keep the yarn (2) in the At one point or another between the roller sets (32). 8. The improved spinning machine according to claim 6, characterized in that said drum set (32) comprises a conveyor belt (33). 9. Improved spinning machine according to any one of claims 2 to 8, characterized in that said additional guide attachment (3') comprises Compactor. 10. The improved spinning machine according to claim 9, characterized in that said compacting means are mechanical. 11. The improved spinning machine according to claim 9, characterized in that said compacting means is by means of air.

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