KR102555593B1 - Creel group control system - Google Patents

Abstract

A creel group control system is disclosed. The disclosed creel group control system,
A winding roller 90 on which the yarn to be released is wound;
a winding motor 91 for rotating the winding roller 90 at a constant rotational speed;
A plurality of bobbins (10) in which the yarn to be unwound is wound;
a creel stand 20 rotatably supporting each of the plurality of bobbins 10;
a feeding roller 50 that pulls and transfers the yarns wound around the plurality of bobbins 10 with a predetermined tension;
a feeding motor 51 rotating the feeding roller 50;
Control unit for overall control of the operation of the creel group control system;
A tension measuring means (60) for measuring a physical quantity linked to the tension of the yarn being unwound and transmitting it to the control unit;
It is characterized in that the control unit controls the rotational speed of the feeding motor 51 so that the tension of the yarn to be unwound is maintained constant based on the measured value transmitted from the tension measuring unit 60.

Description

Creel group control system {Creel group control system}

The present invention relates to a creel group control system, and more particularly, after measuring a load applied to a tension measuring roller passing through a plurality of yarns with a load cell, a control unit controls the rotational speed of a feeding motor so that a constant tension is applied to the yarn. On the other hand, it relates to a creel group control system for detecting whether or not the yarn is twisted using a yarn strain measuring unit composed of a parallel light emitting unit and a parallel light receiving unit.

Thanks to the development of textile technology, various yarns are being produced. These yarns are woven through a textile machine to become a fabric.

Recently, elastic yarns used in various functional clothing have greater elasticity than general yarns, and thus have a relatively long stretch even under small tension.

Due to this, a large difference occurs between the length of the elastic yarn to be wound and the length of the elastic yarn to be unwound in the process of winding the elastic yarn. As a result, the winding process is not performed smoothly.

In order to solve the winding problem of the elastic yarn, it is necessary to precisely control the tension of the yarn.

On the other hand, flat yarns having a larger cross-section than yarns having a general circular cross-section become twisted when excessive tension is applied, so that smooth winding cannot be achieved.

The tension control problem of elastic yarn and flat yarn is not limited to the winding process, and of course affects the weaving process as well.

On the other hand, in the production site, yarn wound around a plurality of bobbins is transported and wound or woven to increase production efficiency.

Therefore, it is urgently required to develop a group-based tension control system capable of controlling the tension of a plurality of yarns in an integrated manner as well as accurately controlling the tension of yarns, which have a great influence on winding and weaving.

Korean Patent Publication No. 10-2009-0023384

The present invention has been proposed to solve the above problems, and after measuring the load applied to the tension measuring roller passing through a plurality of yarns with a load cell, the control unit controls the rotational speed of the feeding motor so that a constant tension is applied to the yarns. aims to do

Another object of the present invention is to detect whether yarn is twisted or not by using a yarn strain measuring unit composed of a parallel light emitting unit and a parallel light receiving unit.

The present invention, a winding roller on which the unwound yarn is wound;

a winding motor for rotating the winding roller at a constant rotational speed;

A plurality of bobbins in which yarns to be unwound are wound;

a creel stand rotatably supporting each of the plurality of bobbins;

a feeding roller that pulls and transfers the yarns wound around the plurality of bobbins with a predetermined tension;

a feeding motor for rotating the feeding roller;

Control unit for overall control of the operation of the creel group control system;

A tension measurement means for measuring a physical quantity linked to the tension of the yarn being unwound and transmitting it to the control unit;

The control unit provides a creel group control system, characterized in that for controlling the rotational speed of the feeding motor so that the tension of the yarn to be released is maintained constant based on the measured value transmitted from the tension measuring unit.

In addition, the tension measuring means of the present invention,

a tension measuring roller disposed between the feeding roller and the winding roller to apply tension to the yarn being fed;

A load cell for measuring the load applied to the tension measuring roller by a plurality of yarns installed at both ends of the tension measuring roller and transferring the load to the controller,

The control unit,

It is characterized in that it further comprises; a tension control module for calculating the average tension of the yarn from the load measured by the load cell and controlling the rotational speed of the feeding motor so that the average tension of the yarn maintains a preset standard tension. .

In addition, the present invention is a rear guide roller that is disposed at the rear of the tension measuring roller to give tension to the yarn to be conveyed;

A front guide roller disposed in front of the tension measuring roller to apply tension to the conveyed yarn; further comprising,

The tension measuring roller is disposed lower than the front guide roller and the rear guide roller so that the direction of tension is applied to the load cell from bottom to top, thereby increasing tension measurement accuracy.

In addition, the present invention is manufactured in a rod shape with through holes formed at predetermined intervals, and a plurality of yarns are transferred to the feeding roller at equal intervals between the creel stand and the feeding roller and are disposed in a direction perpendicular to the feeding direction of the yarn. It further includes; a yarn guide that guides as much as possible,

The yarn guide is characterized in that the load applied to the tension measurement roller by the plurality of yarns is evenly reflected in the load cell by allowing the yarns to be transferred to the tension measurement roller at equal intervals.

In addition, the present invention further includes a yarn strain measuring unit disposed between the feeding roller and the winding roller to detect whether or not the yarn to be transferred is twisted,

The yarn strain measurement unit,

A parallel light emitting unit for irradiating parallel light having a reference thickness in a direction perpendicular to the yarn conveying direction;

A parallel light receiving unit that is spaced apart from the parallel light emitting unit at a predetermined interval in a direction perpendicular to the conveying direction of the yarn and senses the parallel light emitted by the collimated light emitting unit and transmits it to the control unit;

When light is not received by the collimated light receiving unit, the control unit determines that one of the plurality of yarns is twisted and controls the rotational speed of the feeding motor to eliminate the twisting of the yarn.

The creel group control system according to the present invention measures the load applied to the tension measuring roller passing through a plurality of yarns with a load cell, and then controls the rotational speed of the feeding motor so that a constant tension is applied to the yarn. .

In addition, the present invention has an effect of detecting whether or not the yarn is twisted using a yarn strain measuring unit composed of a parallel light emitting unit and a parallel light receiving unit.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a block diagram of a creel group control system according to the present invention.
2 is a side view of a tension measuring roller according to the present invention.
Figure 3 is a diagram explaining the principle of measuring the deformation state of the yarn in the yarn strain measuring unit according to the present invention.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and is to be understood as including various modifications, equivalents, and/or alternatives of the embodiments of this document. In connection with the description of the drawings, like reference numerals may be used for like elements.

In addition, expressions such as “first,” “second,” etc. used in this document may modify various components regardless of order and/or importance, and to distinguish one component from another. It is used only and does not limit the corresponding components. For example, 'first part' and 'second part' may indicate different parts regardless of order or importance. For example, without departing from the scope of rights described in this document, a first element may be called a second element, and similarly, the second element may also be renamed to the first element.

In addition, terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in a general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related art, and unless explicitly defined in this document, an ideal or excessively formal meaning. not be interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude the embodiments of this document.

1 is a configuration diagram of a creel group control system according to the present invention, and FIG. 2 is a side view of a tension measuring roller 61 according to the present invention.

Description will be made with reference to FIGS. 1 and 2 .

The creel group control system according to the present invention includes a winding roller 90, a winding motor 91, a bobbin 10, a creel stand 20, a feeding roller 50, a feeding motor 51, and a tension measuring means 60 , and a control unit (not shown).

The yarn to be released is wound around the winding roller 90.

The take-up motor 91 is configured to rotate the take-up roller 90 at a constant rotational speed.

A yarn to be unwound is wound around each of the plurality of bobbins 10 .

The creel stand 20 is configured to rotatably support each of the plurality of bobbins 10 .

Typically, the support rod of the creel stand 20 is inserted into the penetrating portion of the cylindrical bobbin 10 to support it.

The feeding roller 50 pulls and feeds the yarn wound around the plurality of bobbins 10 with a predetermined tension.

The feeding motor 51 is configured to rotate the feeding roller 50 .

The control unit is a component that controls the overall operation of the creel group control system.

In the present invention, a tension measuring means 60 for measuring the tension of the yarn is provided.

Since a large number of sensors and driving devices are required to measure and control the tension of the yarn unwound from each bobbin 10, economic efficiency is reduced.

Therefore, in the present invention, by adopting a group control method, the measurement and control of the tension of the yarns unwound from the plurality of bobbins 10 are integrated.

The tension measuring means 60 is composed of a tension measuring roller 61 and a load cell 62.

The tension measuring roller 61 is disposed between the feeding roller 50 and the winding roller 90 to give tension to the yarn being transferred.

Since a plurality of yarns are transported, it is preferable to arrange a rear guide roller 64 and a front guide roller 63 behind and in front of the tension measuring roller 61 to prevent the yarn from sagging.

The load cell 62 is installed at both ends of the tension measuring roller 61 to measure the load applied to the tension measuring roller 61 by a plurality of yarns being transported and transmits it to the control unit.

The control unit is provided with a tension control module (not shown).

The tension control module calculates the average tension of the yarn from the load measured by the load cell 62 and controls the rotational speed of the feeding motor 51 so that the average tension of the yarn maintains the preset standard tension.

Therefore, the integrated tension measurement and control is achieved by measuring the load acting on the tension measuring roller 61 in conjunction with the tension applied to the plurality of yarns without measuring the tension of individual yarns.

As a result, the system construction cost is reduced, and there is an effect of filtering minute tension changes of individual yarns caused by noise.

In the present invention, the load applied to the tension measuring roller 61 is measured by a plurality of yarns. At this time, the load applied to the tension measuring roller 61 by the individual yarns should contribute equally.

To this end, in the present invention, a yarn guide 40 is provided.

The yarn guide 40 is manufactured in a rod shape with through-holes formed at predetermined intervals.

The yarn guide 40 is disposed between the creel stand 20 and the feeding roller 50 in a direction perpendicular to the feeding direction of the yarn, and guides a plurality of yarns to be fed to the feeding roller 50 at equal intervals. do.

Figure 3 is a diagram explaining the principle of measuring the deformation state of the yarn in the yarn strain measuring unit 80 according to the present invention.

This will be described with reference to FIG. 3 .

When the flat yarn is twisted and twisted by the tension while being transported, not only the winding but also the weaving itself becomes a problem.

Accordingly, in the present invention, the twist is resolved by detecting whether or not the flat yarn is twisted.

To this end, in the present invention, a yarn strain measuring unit 80 is provided.

The yarn strain measurement unit 80 is disposed between the feeding roller 50 and the winding roller 90 and detects whether or not the yarn being unwound is twisted.

3(a) is a diagram explaining a situation in which parallel light is scanned for flat yarns to be conveyed.

The yarn strain measuring unit 80 is composed of a collimated light emitting unit 82 and a collimated light receiving unit 81 .

The collimated light emitting unit 82 emits parallel light having a reference thickness in a direction perpendicular to the yarn transport direction.

Also, the collimated light receiving unit 81 is spaced apart from the collimated light emitting unit 82 at a predetermined interval in a direction perpendicular to the yarn conveying direction.

The collimated light receiving unit 81 detects the collimated light emitted by the collimated light emitting unit 82 and transmits the detected parallel light to the control unit.

3(b) is a diagram for explaining a situation in which reception of parallel light scanned when the flat yarn is twisted is blocked.

When light is not received by the collimated light receiver 81, the control unit determines that the yarn is twisted as shown in FIG. 3 (b) and controls the rotational speed of the feeding motor 51 so that the twist of the yarn is eliminated. .

3(b) shows a case in which one yarn is conveyed, but in the present invention, since a plurality of yarns are conveyed, when one of the plurality of flat yarns is twisted, light is received by the collimated light receiving unit 81. will not become

As such, the yarn strain measurement unit 80 according to the present invention detects the twisted flat yarn and then controls the rotational speed of the feeding motor 51 so that appropriate measures are taken.

The present invention relates to a creel group control system, and more particularly, after measuring a physical quantity linked to the tension of yarn with a tension measuring unit (60), the control unit controls the rotational speed of the feeding motor (51) so that the yarn is constant. It relates to a creel group control system that allows tension to be applied and detects twist and disconnection of yarn using a yarn strain measuring unit 80 composed of a parallel light emitting unit 82 and a parallel light receiving unit 81 .

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and is common in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those with knowledge of, and these modified embodiments should not be individually understood from the technical spirit or perspective of the present invention.

10 : bobbin
20 : creel stand
40: yarn guide
50: feeding roller
51: feeding motor
60: tension measuring means
61: tension measuring roller
62: load cell
63: front guide roller
64: rear guide roller
80: yarn strain measuring unit
81: collimated light receiving unit
82: collimated light emitting unit
90: winding roller
91: winding motor

Claims (4)

A winding roller 90 on which the yarn to be released is wound;
a winding motor 91 for rotating the winding roller 90 at a constant rotational speed;
A plurality of bobbins (10) in which the yarn to be unwound is wound;
a creel stand 20 rotatably supporting each of the plurality of bobbins 10;
a feeding roller 50 that pulls and transfers the yarns wound around the plurality of bobbins 10 with a predetermined tension;
a feeding motor 51 rotating the feeding roller 50;
A controller (not shown) for overall control of the operation of the creel group control system;
A tension measuring means (60) for measuring a physical quantity linked to the tension of the yarn being unwound and transmitting it to the control unit;
The control unit controls the rotational speed of the feeding motor 51 so that the tension of the unwound yarn is maintained constant based on the measured value transmitted from the tension measuring means 60,
The tension measuring means 60,
a tension measuring roller 61 disposed between the feeding roller 50 and the winding roller 90 to apply tension to the yarn being transported;
A load cell 62 installed at both ends of the tension measuring roller 61 to measure the load applied to the tension measuring roller 61 by a plurality of yarns being transported and transmitting the load to the controller,
The control unit,
A tension control module (not shown) that calculates the average tension of yarn from the load measured by the load cell 62 and controls the rotational speed of the feeding motor 51 so that the average tension of the yarn maintains a preset standard tension. Poetry); characterized in that it further comprises,
A yarn strain measurement unit 80 disposed between the feeding roller 50 and the winding roller 90 to detect whether or not the yarn to be fed is twisted; further comprising,
The yarn strain measurement unit 80,
a parallel light emitting unit 82 that emits parallel light having a reference thickness in a direction perpendicular to the yarn conveying direction;
A parallel light receiving unit 81 that is spaced apart from the collimated light emitting unit 82 at a predetermined interval in a direction perpendicular to the yarn conveyance direction and senses the parallel light emitted by the collimated light emitting unit 82 and transmits the same to the control unit. It consists of ;
When light is not received by the collimated light receiving unit 81, the control unit determines that one of the plurality of yarns is twisted and controls the rotational speed of the feeding motor 51 so that the twisting of the yarn is eliminated. To do, creel group control system
delete According to claim 1,
It is manufactured in a rod shape with through holes formed at predetermined intervals, and a plurality of yarns that are arranged and transferred in a direction perpendicular to the yarn conveying direction between the creel stand 20 and the feeding roller 50 are fed at equal intervals. Further comprising a; yarn guide 40 for guiding to be transferred to (50);
The yarn guide 40 allows the yarns to be transferred to the tension measuring roller 61 at equal intervals so that the load applied to the tension measuring roller 61 by the plurality of yarns is evenly reflected in the load cell 62 Characterized in that, the creel group control system
delete

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