RU201212U1 - DEVICE FOR PRODUCING THREADS OF TWISTED BONDED SEWING - Google Patents

Abstract

This utility model relates to the textile industry and concerns devices for the manufacture of threads and can be used for the manufacture of sewing thread used for sewing products from heavy technical fabrics, finishing stitches on shoes, leather goods and furniture, for seats of cars and aircraft, personal protective equipment , clothing for motorcyclists, rugs and belts (for multidirectional seams). The technical result obtained when using the claimed utility model consists in increasing the uniformity of the tension of the core thread in the finished sewing twisted bonded thread. A device for manufacturing a sewing twisted bonded thread contains packages with multifilament threads, made with the possibility of twisting multifilament threads, and a package with a core thread, at least two drivers for guiding each multifilament thread and at least one leader for guiding the core thread, located behind the packages with multifilament threads and made with the possibility of rotation a roller for multifilament threads, a device for guiding and distributing multifilament threads and a core thread, made in the form of two plates arranged concentrically one under the other, each of which contains a hole in the center and at least , two holes located equidistantly relative to the hole in the center, and installed behind the device for guiding and distributing a package for winding the twisted yarn. The device also contains at least one roller for multifilament yarns, a leash located in front of the rollers for collecting and guiding multifilament yarns onto the rollers, a leash located after the rollers for collecting and guiding multifilament yarns to a device for guiding and distributing multifilament yarns and core yarns, a device for heat treatment of the twisted yarn, at least one braking device located behind the lead for the core thread and a device for twisting the multifilament threads and the core thread into a twisted thread, located behind the device for guiding and distributing the multifilament threads and the core thread. 7 h. p. f-ly, 3 ill.

Description

This utility model relates to the textile industry and concerns devices for the manufacture of threads and can be used for the manufacture of sewing thread used for sewing products from heavy technical fabrics, finishing stitches on shoes, leather goods and furniture, for car and aircraft seats, personal protective equipment , clothing for motorcyclists, rugs and belts (for multidirectional seams).

For joining heavy technical fabrics or leather, the following requirements are imposed - high seam strength, wear resistance and uniformity (aesthetic appearance), as well as an efficient and trouble-free sewing process. The chemical nature of the fiber used and the structure of the yarn itself play a major role in ensuring that these requirements are met. As a rule, heavy technical fabrics and leather are sewn with twisted yarns made of synthetic fibers (polyester, polyamide) with good strength properties and a multifilament structure. An important aspect is the method of bonding (bonding) the twisted multi-strand yarn into a single structure. The bonding of the thread prevents the thread from loosening during threading, as well as unwinding of the thread during the production of zigzag seams, and allows you to lay a seam through several layers of very thick material without violating the integrity (delamination) of the thread structure.

Various methods are known for producing bonded threads. One of the known methods of bonding a thread is the surface coating of a multifilament thread with a special binder of various nature. The advantage of this bonding is the reduced friction of the thread surface against the eye of the needle during high-speed sewing. However, it is also possible to remove the binder from the surface of the thread during sewing, which can lead not only to contamination of the sewing equipment with particles of the substance, but also to the separation of the thread into separate strands or fibers, which, in turn, can lead to a deterioration in the quality of the seam and possible stopping the sewing process. Another feature of this bonding method is the combination of the processes of dyeing and surface treatment of the thread. The ink must be applied to the sewing thread before the binder is applied, on the other hand, the binder would prevent the thread from absorbing the ink uniformly.

The claimed utility model concerns the manufacture of a bonded thread by fusing from the inside a twisted thread formed by multi-filament threads wound in a spiral on a low-melting core thread.

There is a known device for producing a twisted sewing thread fused from the inside, containing packages made with the possibility of rotation from a driving belt, while for each of the packages the device contains at least two leashes for guiding multifilament threads and at least one leash for guiding the core yarns made with the possibility of rotation and installed at an angle to one another next to one another; feed rollers located in front of the rollers; threads, a guide leash and a twisting device, at the output of which a twisted thread is obtained with three multi-filament threads wound in a spiral onto a low-melting core thread. To obtain a thread fused from the inside of the twisted thread, the known device comprises heating drums onto which the twisted thread is rewound, and a device for heat treatment of the twisted thread, which can be an autoclave or oven (patent for invention RU2093621 C1, published on 20.10.1997).

The disadvantages of the known device for obtaining a twisted sewing thread fused from the inside can be attributed to the insufficiently high quality of the obtained threads, associated with the lack of adjustment of the tension of the core thread in the process of obtaining the twisted thread, which leads to uneven twisting or loss of the core thread, and, as a result, to poor-quality fastening in the center of the core thread during its melting and the formation of a complex thread fused from the inside, as well as to the occurrence of thread breakage during the twisting process. In addition, on the known device, yarns are obtained that have the following restrictions: by the number of components of the twisted yarn (only three multifilament yarns), by twist (from 250 twists / meter), by the linear density range of each of the three multifilament yarns: from 50 to 480 denier ...

A device for the production of twisted internally fused (bonded) yarn is known, including a vertical support post, a thread regulating device that can be moved up and down in the lower half of the support post, a first thread guide (a device for guiding and connecting / distributing threads), which is fixed in the upper half of the stand, a second thread guide made in the form of upper and lower magnetic holes, which are respectively located above and below the first thread guide and fixed on the lever head, a heating element located behind the lower magnetic hole, a twisting device located in the upper magnetic hole of the second thread guide , a heating device located in the lower magnetic hole of the second thread guide. The first thread guide is made of a fixed base, which is fixed on the lever head, and a tip with a tapered lateral longitudinal thread, which is configured to pass through the fixed base to form a protruding nose conical part. In addition, the center of the first thread guide is provided with a hole, so that the high melting point nylon thread and the low melting point nylon thread are respectively passed through the tapered side thread and the center hole of the first thread guide (China patent CN2921048Y, published 07/11/2007).

The disadvantage of the known device for obtaining a twisted bonded thread is also an insufficiently high quality of threads associated with inaccurate fixation of the core thread using a tip with a side thread, since the connection of the warp threads with the core thread occurs chaotically, the core thread can take any position in the twisted: extreme or middle ...

As the closest technical solution, a device for obtaining a twisted bonded thread was chosen, which contains an investment for a core thread and an investment for multifilament threads installed on brackets, a device for guiding and distributing multifilament and core threads into one complex twisted bonded thread, a bracket for fixing a device for directions and connections of multifilament and core threads. A tensioner is installed behind the core thread package. Behind the package for multifilament yarns there are two guide elements (driver) for multifilament yarns, after which a tension balancer and a roller are installed. The device for guiding and distributing multifilament and core threads into one complex twisted bonded thread is made in the form of two concentrically mounted circular plates, each of which contains a hole in the center and three holes located equidistantly relative to the hole in the center. Behind the device for guiding and connecting multifilament and core yarns into one complex twisted bonded yarn, there is a package for winding a complex twisted yarn (China's application CN102704083B, published 03.10.2012).

The disadvantage of the closest analogue, as well as of the known devices for producing twisted bonded threads, is the insufficiently high quality of the threads due to uneven tension (there is no knot providing uniform tension), as well as a limited number of threads to be connected (3 multifilament threads plus a low-melting thread).

A technical problem, the solution of which is provided by the claimed utility model, is the creation of a device for the manufacture of high quality sewing twisted bonded sewing thread with high strength and the ability to adjust the number of multifilament threads starting from 2 threads due to the possibility of using a wider range of linear density of threads from 500 to 1700 denier, and also with a high uniformity of distribution of the core thread in the finished sewing twisted bonded thread. In addition, a technical problem is the creation of a device that makes it possible to produce an equilibrium thread that does not break or twist during sewing, does not unwind when producing various types of seams, and allows a seam to be inserted through several layers of very dense material, using a smaller number of threads, if necessary.

The technical result obtained when using the claimed utility model consists in increasing the uniformity of the tension of the core thread in the finished sewing twisted bonded thread.

The technical result is achieved in that a device for manufacturing a sewing twisted bonded thread, containing packages with multifilament threads, made with the possibility of twisting multifilament threads, and a package with a core thread, at least two drivers for guiding each multifilament thread and at least one leash for guiding the core thread, located behind the packages with multifilament threads and a roller for multifilament threads made with the possibility of rotation, a device for guiding and distributing multifilament threads and a core thread, made in the form of two plates arranged concentrically one below the other, each of which contains an opening in the center and at least two holes located equidistantly relative to the hole in the center, and installed behind the device for guiding and distributing the package for winding the twisted yarn, according to the useful, additionally contains at least one roller for m a leash located in front of the rollers for collecting and guiding multifilament yarns on the rollers, a leash located after the rollers for collecting and guiding multifilament yarns to a device for guiding and distributing multifilament yarns and a core thread, a device for heat treatment of twisted yarn, at least one brake a device located behind a lead for a core thread; and a device for twisting multifilament threads and a core thread into a twisted thread, located behind a device for guiding and distributing multifilament threads and a core thread.

In this case, according to the utility model, a device for heat treatment of the twisted yarn can be located behind the package for winding the twisted yarn.

Moreover, according to the utility model, the device for heat treatment of the twisted yarn can be located in front of the package for winding the twisted yarn.

Moreover, according to the utility model, the rollers for multifilament yarns can be installed one after another at an angle to each other.

In this case, according to the invention, at least one of the rollers for the multifilament yarns can be provided with grooves.

Moreover, according to the invention, the device for guiding and distributing multifilament threads and a core thread can be configured to adjust the distance between the plates.

Moreover, according to the utility model, one plate can be made larger than the other.

In this case, according to the utility model, the distances at which the holes are located equidistantly relative to the holes in the center of the plates can be made different.

The present utility model is illustrated by images (Figs. 1-3), an example of an embodiment of a device for making a sewing twisted bonded thread on which, however, is not the only possible one, but clearly demonstrate the possibility of achieving the claimed technical result. At the same time, the given examples of implementation of the claimed utility model do not limit the possibilities of its implementation, which do not go beyond the scope of the utility model claims, and are not exhaustive. FIG. 1 shows a diagram of the inventive device for the manufacture of twisted bonded sewing thread, FIG. 2 shows an enlarged view of the device for guiding and distributing threads (callout A), FIG. 3 shows an enlarged image of the rollers (callout B).

The positions in FIG. 1-3 are indicated:

1 - twisted thread;

2 - multifilament thread;

3 - core thread;

4 - packages with multifilament threads 2;

5 - drive means;

6 - package with core thread 3;

7 - a leash for guiding multifilament threads 2;

8 - leash for guiding multifilament threads 2;

9 - a leash for guiding the core thread 3;

10 - rollers;

11 - a leash for collecting and directing multifilament threads 2 to rollers 10;

12 - a leash for collecting and directing multifilament threads 2 to the device 19;

13 - grooves of rollers 10;

14, 15, 16 - turns of multifilament threads 2;

17, 18 - braking devices;

19 - a device for guiding and distributing multifilament threads 2 and core thread 3;

20, 21 - plates of the device 19;

22 - holes in the center of plates 20 and 21;

23 - holes not in the center of plates 20 and 21;

24 - package for winding twisted yarn 1;

25 - a device for twisting multifilament threads 2 and a core thread 3 into a twisted thread 1;

26 - slider;

27 - device ring 25;

28 - device for heat treatment of twisted yarn.

According to the utility model, a device for manufacturing a sewing twisted bonded thread in one embodiment is made in the form of an assembly structure and contains packages 4 with multifilament threads, made with the possibility of rotation from a drive means 5, for example, a driving belt, to ensure the twisting of the multifilament threads 2, and the package 6 with the core thread 3. The device contains for each of the packages 4 at least two leaders 7 and 8 for guiding the multifilament threads 2 and at least one leader 9 for guiding the core thread 3 (Fig. 1).

The device has feed rollers 10 capable of rotation and installed at an angle to one another (for example, one after the other) one with the other, and a connecting leash 11 located in front of the rollers 10 for collecting and guiding the multi-filament yarns 2 to the rollers 10 and located after the rollers 10, a leash 12 for collecting and guiding the multifilament yarns 2 to the device 19. The rollers 10 are installed at an angle to each other, that is, not parallel to each other, and at least one of the rollers 10 has special guide grooves 13 for so that the successive turns 14, 15, 16 of the threads 2 around the rollers 10 can be reliably disconnected from one another (Fig. 3). Behind the leash 9 there are braking devices 17 and 18 (if necessary, there can be from one to several), behind which is a device 19 for guiding and distributing multifilament threads 2 and a core thread 3 (Fig. 1).

The device 19 is made in the form of two concentrically installed plates 20 and 21, each of which contains an opening 22 in the center and at least two openings 23 located equidistantly relative to the opening 20 in the center (Fig. 2). In the example shown in FIG. 1 and 2 of the embodiment of the device, the plates are made with six holes 23. The device 19 is made with the possibility of adjusting the distance between the plates 20 and 21. The plate 20 can be made larger in size (in the presented embodiment of the device 19, it is larger in diameter, since the plates are made round ) than the plate 21 located behind it. In addition, the distance at which the holes 23 in the plate 20 are located can be made larger than the distance at which the holes 23 are located in the plate 21. Moreover, the ratio of these distances can vary.

Behind the device 19, a package 24 for winding a twisted yarn and a device 25 for twisting multifilament yarns 2 and a core yarn 3 into a twisted yarn 1 are installed, which may contain a slider 26 adapted to move along a ring 27. Behind the device 25 is a device 28 for heat treatment of the twisted yarn and obtaining, respectively, bonded yarn, which can be used as an autoclave or oven. In other embodiments, the device 28 may be located in front of the package 24 for winding the twisted yarn 1 (FIG. 1).

The manufacture of sewing twisted bonded thread on the claimed device is carried out as follows.

The essence of the process of manufacturing a complex twisted bonded is reduced to twisting two or more threads with a fusible core (core thread) together and forming a complex twisted thread. And after high temperature processing, the hot core melts, sticks to the multi-strand sewing thread and does not separate. At the same time, the utility model allows the production of high-strength polyester sewing threads with adjustable elongation at break, which is very important for sewing threads. The bonded twisted sewing thread obtained in accordance with the claimed utility model has a linear density of 500 to 1700 denier, has a high strength - not less than 6.4 cN / dtex and an elongation at break of not less than 17%.

The packages 4 with multifilament yarn 2 are simultaneously rotated in the first direction using the drive belt 5 in order to ensure the same twisting of two or more multifilament yarns 2. Individual yarns 2 are fed from the rotating packages 4 through the drivers 7 and then onto the drivers 8. Rotation of the packages 4 provides the message of the twist in the first direction to the multifilament threads 2 emerging from the leaders 8.

The twisted multi-filament yarns 2 are collected on a leash 11 and wound several times on a pair of identical rotating rollers 10. The number of windings of the multi-filament yarns 2 on the rotating rollers 10 can be different. Typically, the threads are wound at least three times around the rotating rollers to provide sufficient tension and friction between them and the rotating rollers 10.

The core thread 3 is fed through the leash 9 to the braking devices 17 and 18. The tension of the thread 3 is regulated by creating a braking force directly in the braking devices 17 and 18 (the number and adjustment depends on the range of threads). Further, the core thread 3 is fed directly into the central holes 22 of the plates 20 and 21 of the fixture 19, and the threads 2 enter the holes 23 of the plates 20 and 121 of the fixture 19, where the necessary direction and distribution (in other words, positioning) of the threads 2 and 3 is carried out.

After adaptation 19, the multifilament threads 2 and the core thread 3 are connected by twisting them under tension into a twisted thread 1 in the direction opposite to the first direction of twisting of the multifilament threads 2, while ensuring constant positioning of the multifilament threads 2 and thread 3, which moves due to the pulling efforts when winding it with multifilament yarns 2, followed by winding twisted yarn 1 with a core onto the package 24.

The unification (joining, twisting) of the multifilament yarns 2 and the core yarn 3 takes place after the fixture 19 in the final twisting process created by the device 25 for twisting the multifilament yarns and the core yarn into a twisted yarn. As the resulting twisted yarn 1 is wound around the package 24, the twisting device 25 imparts a twist to the yarn 1 in the opposite direction to the twisting direction of the individual multifilament yarn 2. The normal tension provided by the twisting device 25 is sufficient to pull the core yarn 3, supplied from the braking devices 17 and 18, and also to maintain the resulting twisted thread 1 in an undistorted state. The twist, imparted to the thread 1 by the rotation of the spindle (not shown in the figures), which drives the package 24 into rotation, extends to the device 19, where the separation ensures that the core thread 3 is placed in the center and wrapped around it with multifilament threads 2. The winding angle, regulated by the ratio between package diameter 24 and ring diameter 27, provides control of the winding tension, which is important for the correct structure at the beginning of the process. The preferred winding angle should be greater than 20 degrees.

The degree of twist imparted to yarn 1 will depend on the linear density of the individual multifilament yarns 2 and on the linear density of the core yarn 3. Typically, the linear density of the core yarn 3 is such that yarn 3 is from about 2 to 10 percent by weight, preferably from about 2.5 up to 8 percent by weight, relative to the sum of the linear densities of three or more individual strands 2.

When twisting three or more multifilament threads 2 in the first direction, they are given a twist of 150 - 700 twists per meter, and the ratio of the twist of the twisted thread 1 to the twist of three multifilament threads 2 is selected in the range from 0.65 to 0.9. The number of twists per meter, yarn 1, will be sufficient to wind the individual multifilament yarns 2 tightly on the core yarn 3.

The next stage of the production of the thread provides for the treatment of the twisted thread 1 in an autoclave or oven 28 with superheated steam at a temperature exceeding the melting point of the core thread and for a time sufficient to soften the material of the core thread along the entire length of the twisted thread wound on a spool, and obtain a sewing fused from the inside. threads

The congealed and fused filaments are removed from the autoclave 28 and rewound onto packages for wet processing, these packages are then wet processed, for example, dyed in closed package dyes.

In the finished yarn, two or more multifilament yarns 2 are spirally wound around the core yarn 3. The outer multifilament yarns 2 are usually relatively high tenacity continuous yarns such as nylon, polyester, and the like. By way of illustration, single or single multifilament yarns typically have a linear density in the range of about 50 to about 1700 denier. Thus, the twisted yarn typically has a total linear density (excluding the core yarn) ranging from about 150 to about 5700 denier, and the linear density of the core yarn is from 2 to 8 percent of the total linear density of the three multifilament threads.

The core yarn 3 may be a single filament or multifilament yarn of a low melting copolymer capable of binding the multifilament yarns 2. In the case where the outer multifilaments are made of nylon, the core yarn 3 is advantageously a nylon terpolymer made from three nylon monomers. Preferred nylon binder threads have a melting point lower than 150 ° C, preferably a melting point in the range of about 90 ° C to about 125 ° C. If the yarns 2 are polyester, a polyester copolymer or terpolymer binder yarn can be advantageously used as the core yarn. The polyester bonding thread is preferably in the range of about 130 ° C to about 165 ° C.

Claims (8)

1. A device for manufacturing a sewing twisted bonded thread, containing packages with multifilament threads, made with the possibility of twisting multifilament threads, and a package with a core thread, at least two leashes for guiding each multifilament yarn and at least one leash for guiding a core thread located behind packages with multifilament threads and a roller for multifilament threads made with the possibility of rotation, a device for guiding and distributing multifilament threads and a core thread, made in the form of two plates arranged concentrically one below the other, each of which contains a hole in the center and, at least two holes located equidistantly relative to the hole in the center, and installed behind the device for guiding and distributing a package for winding a twisted yarn, characterized in that it further comprises at least one roller for multifilament yarns located in front of the rollers, a leash for collecting and guiding multifilament yarns on the rollers, a leash located after the rollers for collecting and guiding multifilament yarns to a device for guiding and distributing multifilament yarns and a core yarn, a device for heat treatment of twisted yarn, at least one brake device located behind a lead for the core thread; and a device for twisting multifilament threads and core thread into a twisted thread, located behind the device for guiding and distributing multifilament threads and core thread. 2. Device by. 1, characterized in that the device for heat treatment of the twisted yarn is located behind the package for winding the twisted yarn. 3. Device by. 1, characterized in that the device for heat treatment of the twisted yarn is located in front of the package for winding the twisted yarn. 4. Device by. 1, characterized in that the rollers for the multi-filaments are installed one after the other at an angle to each other. 5. Device by. 1, characterized in that at least one of the rollers for the multifilament yarns is provided with grooves. 6. Device by. 1, characterized in that the device for guiding and distributing the multifilament threads and the core thread is configured to adjust the distance between the plates. 7. Device by. 1, characterized in that one plate is made larger than the other. 8. Device by. 1, characterized in that the distances at which the holes are located equidistantly relative to the holes in the center of the plates are different.

Images