JP2016075019A - Device for pulling out and extending multiple newly spun yarns - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device comprising multiple godet rollers, which are arranged inside a godet roller box, pull out and extend newly spun multiple yarns and consume as little energy as possible by heating, extending and relaxing yarns as evenly as possible.SOLUTION: A device can ensure uniform quality and manufacture completely stretched polymer yarn with qualitatively quite high value due to appropriate means 10.1, 10.2, 10.3 for leading accompanying air, which is generated by rotation of godet rollers 1.2 to 1.4 and may disturb the running of yarn, to a dead zone 16 of the godet roller box 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for pulling out and drawing a plurality of yarns that have just been spun, as described in the front part of claim 1.

  When producing synthetic yarns in the melt spinning process, the freshly spun yarn is guided after cooling in an apparatus consisting of a plurality of godets with driven godet peripheral walls, preferably as one yarn group, for further processing. Is done. At this time, the godet peripheral wall of the godet is preferably heated in order to draw out the yarn after spinning, to draw and relax. Such an apparatus is known based on, for example, Japanese Patent Application Laid-Open No. H10-293707.

  In known devices, a plurality of yarns are guided together around a godet peripheral wall driven as a single yarn group. The godet peripheral wall has a configuration to be heated and is disposed inside the godet box. For this purpose, the yarn group is introduced into the godet box through the inlet opening and again guided out of the godet box through the outlet opening. The inlet opening and the outlet opening are configured such that the yarn groups can be guided parallel to each other without contact. At this time, air exchange between the periphery of the godet box and the inner chamber is inevitable, and heat loss due to convection occurs.

  Based on the high speed of the rotating godet and the traveling yarn, an air flow is generated which causes unstable yarn traveling on the godet peripheral wall. Such air flow is referred to below as entrained air. However, in order to enable uniform heating of the yarn and stable running, a quiet yarn running is necessary. In order to solve this problem, an apparatus based on Patent Document 1 has one air guide plate arranged beside the godet. This air guide plate keeps the accompanying air away from the yarn group, and the accompanying air is removed from the thread group. Lead out of the godet box through each one of the openings in the dead box. This air exchange with the heated godet wall and surroundings causes additional heat loss due to significant convection. In addition to the high energy consumption in the device that occurs in this way, the exchange of air with the surroundings additionally makes it difficult to create a uniform thermal environment inside the godet box.

JP 2002-371429 A

  The object of the present invention is therefore to improve the device for drawing yarns mentioned at the beginning and to provide a device which allows as constant conditions as possible in both thermal and aerodynamic forms. It is. Furthermore, it is desired that the energy consumption of this device is as low as possible.

  In order to solve this problem, in the configuration of the present invention, the accompanying air is introduced into at least one dead zone of the godet box by an appropriate means.

  In such a dead zone, air can flow, for example as a vortex, without affecting the yarn group, for example without causing yarn sway in the yarn group. In such a dead zone, the flow energy of the accompanying air can be converted into heat. At this time, the dead zone has such a size that a sufficient space that can sufficiently eliminate the influence on the yarn group such as the above-described process, that is, the yarn sway, exists in the dead zone. Like all the air inside the godet box, the accompanying air is also heated by the godet peripheral wall. Since the accompanying air does not flow out of the godet box, the heat energy provided in the accompanying air remains inside the godet box. This provides a device that enables uniform and even yarn processing with very little energy consumption.

  Preferably, the entrained air is directed into the dead zone through one or more flow paths. As a result, it is possible to reliably avoid the accompanying air from adversely affecting the yarn group on the way to the dead zone.

  In a particularly preferred aspect, the start end of each flow path is disposed adjacent to the wedge-shaped gap, and the end of the flow path is located in the dead zone region. These wedge-shaped gaps exist between the air guide plate and the godet peripheral wall. Most of the accompanying air collects in the wedge-shaped gap in this way, and a positive pressure is generated in the wedge-shaped gap, and this positive pressure is used to transport the accompanying air from the critical region through the flow path into the dead zone. Used.

  Depending on the configuration of the godet box or depending on the arrangement of the channel or channels relative to the godet box, the channel has a circular or square cross section. At this time, both the flow technical viewpoint and the manufacturing technical viewpoint should be considered.

  In order to be able to optimally guide the entrained air from the critical region into the dead zone, preferably the channel is correspondingly arranged with means that can influence the value of the mass flow that occurs in the channel. ing.

  This effect can have a promoting or squeezing effect. Thus, depending on the configuration, in a preferred aspect of the invention, a restriction or blower is placed inside the channel or at the end of the channel.

  Further preferred embodiments of the invention are defined in the further dependent claims.

  In the following, with reference to the drawings, the device according to the present invention will be described in detail based on some embodiments of the device according to the present invention.

It is a front view which shows roughly the inside of 1st Embodiment of the apparatus which concerns on this invention. It is a figure which shows roughly the inside of 1st Embodiment of the apparatus which concerns on this invention seeing from the left side. Fig. 3.1 is a front view schematically showing the inside of the first embodiment of the device according to the present invention in another way, and Fig. 3.2 is a second embodiment of the device according to the present invention. It is a front view which shows roughly the inside of the form of. It is a figure which shows roughly the inside of 3rd Embodiment of the apparatus which concerns on this invention seeing from the left side. It is a front view which shows roughly the exterior of 3rd Embodiment of the apparatus which concerns on this invention.

  The same reference numbers are used in all drawings.

  FIG. 1 shows a front view of a first embodiment of the device according to the invention. The doors 23 of the godet box 4 and the secondary godet box 6 are omitted in the drawing so that the internal structure of the box can be seen. In the embodiment shown in FIG. 1, a first godet circumferential wall 2.1 of godet 1.1 is arranged in a secondary godet box 6 and another godet circumferential wall 2 of godets 1.2 to 1.4. 2 to 2.4 are arranged in the godet box 4. At this time, the godet box 4 has the heat insulating body 5 which is a part of the godet box wall 29 with respect to the periphery. The godet box 4 and the secondary godet box 6 form one unit and are connected to each other through a through opening 9 for guiding the yarn.

  Inside the godet box 4 and the secondary godet box 6, the yarns of the yarn group 32 are each partially wound by less than 360 ° on the godet peripheral walls 2.1 to 2.4, preferably 180 ° to 270 °. Guided by partial wrapping in range. The godet peripheral walls 2.1 to 2.4 are configured to be heatable. At this time, the surface temperature may vary depending on the requirements and the yarn treatment. For example, the temperature in the range of 60 ° C. to 250 ° C. can be adjusted. The stretching speed is at most 3000 rpm to 5000 rpm, and such a stretching speed is obtained especially in the godet peripheral wall 2.2, 2.3, 2.4.

  Two guide rollers 13.1, 13.2 having guide peripheral walls 14.1, 14.2 are arranged in front of the secondary godet box 6, that is, on the yarn path on the upstream side. For yarn guidance, the secondary godet box 6 further has a slit-like inlet opening 7 on the upper side 33 and the godet box 4 has a slit-like outlet opening 8 on the lower side 34. In order to protect the yarn group 32 running into the secondary godet box 6 against the air flow inside the secondary godet box 6 at the time of entering, the secondary godet box is provided at the inlet opening 7. 6, the run-in plate 11 is correspondingly arranged. The run-in plate 11 has a free end that terminates at a short distance in front of the godet peripheral wall 2.1. Accordingly, the entry of the yarn group 32 and the winding of the yarn group 32 around the first godet peripheral wall 2.1 are shielded against the accompanying air flow.

  A first air guide plate 10.1 is arranged at the yarn transition between the first godet peripheral wall 2.1 and the second godet peripheral wall 2.2 of both godets 1.1, 1.2. ing. The air guide plate 10.1 is held substantially parallel to the free tension section at short intervals, so that the yarn group 32 is shielded from the accompanying airflow.

  Similar to the air guide plate 10.1, another air guide plate 10.2 is also provided between the godet peripheral wall 2.2 and the godet peripheral wall 2.3 and between the godet peripheral wall 2.3 and the godet peripheral wall 2.4. , 10.3. The two air guide plates 10.2, 10.3 are also in the same way almost the entire relaxation zone between the godet peripheral wall 2.2 and the godet peripheral wall 2.3 and between the godet peripheral wall 2.3 and the godet peripheral wall 2.4. It extends over. The air guide plates 10.1 to 10.3 are arranged so as to protrude from the mounting wall 3 (not shown), and extend in parallel to the godet peripheral walls 2.1 to 2.4.

  Inside the godet box 4, a run-out plate 12 is arranged corresponding to the outlet opening 8, and the free end of the run-out plate 12 extends to the side of the godet peripheral wall 2.4. The run-out plate 12 extends substantially over the projecting length of the godet peripheral wall 2.4 to form a yarn guide section, whereby the yarn of the yarn group running out from the godet peripheral wall 2.4 is allowed to flow against the accompanying air flow inside. Can be shielded. The thread spacing of the thread group 32 with respect to the plate is as small as possible for this purpose, but the plate and the thread group 32 are not likely to come into contact with each other. Therefore, the distance between the yarn guides 32 with respect to the air guide plates 10.1, 10.2, 10.3 and the run-in plate 11 and the run-out plate 12 is in the range of 1-5 mm.

  There is a so-called wedge-shaped gap between the godet peripheral wall 2.1 to 2.4 and the adjacent air guide plate 10.1 to 10.3 or between the run-in plate 11 and the run-out plate 12. Yes. The wedge-shaped gap 15 extends in parallel to the godet axis over the projecting length of the godet peripheral walls 2.1 to 2.4. When the direction of rotation of the godets 1.1 to 1.4 is directed into the wedge-shaped gap 15, the accompanying air generated in the wedge-shaped gap 15 by the rotation of the godets 1.1 to 1.4. Are collected. As a result, a positive pressure is generated in the wedge-shaped gap 15, unlike the remaining space of the godet box 4 or the secondary godet box 6.

  A dead zone 16 exists in the upper left corner of the godet box 4. This dead zone 16 is a free space inside the godet box 4 through which the yarn group 32 does not pass. The accompanying air generated by the traveling of the yarn and the rotation of the godet is guided to the dead zone 16 from the wedge-shaped gap 15. A specific example regarding the structure of the dead zone 16 is not shown in FIG. 1, which will be described below with reference to FIG. The dead zone 16 is shaped and dimensioned so that the associated air introduced into the dead zone 16 can be calmed or the flow energy of the associated air can be converted into thermal energy in the dead zone 16. .

  FIG. 2 shows the embodiment shown in FIG. 1 as viewed from the left side. At this time, since the left side wall 30 of the godet box 4 is removed, the inside of the godet box 4 can be seen.

  The godets 1.2 to 1.4 are fixed to the front side 35 of the mounting wall 3. The godet driving devices 31.2 to 31.4 of the godets 1.2 to 1.4 are fixed to the back side 36 of the mounting wall 3. The godet 1.1 with its associated drive is not visible in FIG. 2 because it is covered by the other godets 1.2 to 1.4. The godet box 4 and the secondary godet box 6 have a common door 23. Since the door 23 includes a door outer wall 25 and a door inner wall 26, a hollow chamber 28 exists inside the door 23. A door grip 24 for opening and closing the door 23 is attached to the door outer wall 25. Adjacent to the wedge-shaped gap 15 described above, the door inner wall 26 is provided with a respective wedge-shaped gap opening 27.1, 27.2, 27.3, 27.4. Through these wedge-shaped gap openings 27.1 to 27.4, the accompanying air reaches the hollow chamber 28 of the door 23. In addition, the door inner wall 26 is provided with a dead zone opening 17.1. As a result, the accompanying air can flow from the critical region where the yarn group 32 travels through the hollow chamber 28 to the dead zone 16 and settle there. The hollow chamber 28 thus forms a flow path 18.1 from the wedge-shaped gap openings 27.1 to 27.4 to the dead zone opening 17.1. The positions of the wedge-shaped gap openings 27.1 to 27.4 and the dead zone opening 17.1 are not shown in the correct positions here for the sake of clarity of the drawing. These openings 27.1 to 27.4, 17.1 are located in the location shown in FIG.

  FIG. 3.1 shows the first embodiment of the present invention in another front view. Unlike FIG. 1, only the door outer wall 25 is removed here, not the entire door. As a result, the positions of the dead zone opening 17.1 and the wedge-shaped gap openings 27.1 to 27.4 can be recognized. For the sake of clarity, some members covered by the door inner wall 26 are shown in broken lines. In addition, a stop 21 formed as a perforated panel is attached to the dead zone opening 17.1. With this configuration, the flow of the accompanying air from the wedge-shaped gap 15 into the dead zone 16 can be influenced.

  FIG. 3.2 shows another second embodiment of the present invention in exactly the same form as in FIG. 3.1, with the door outer wall 25 omitted as well. Here, only differences from the first embodiment shown in FIG. 3.1 will be described.

  A plurality of passage panels 20 are arranged inside the hollow chamber 28, and separate flow paths 18.1 leading from the wedge-shaped gap openings 27.1 to 27.4 to the dead zone opening 17.1. 18.4 exists. In addition, a blower 22 may be arranged in the dead zone opening 17.1 in the same manner as the diaphragm 21 shown in FIG. The blower 22 serves to promote the flow of accompanying air that flows into the dead zone 16 through the flow paths 18.1 to 18.4.

  Of course, in FIG. 3.2, the diaphragm 21 shown in FIG. 3.1 can be used instead of the blower 22, and conversely, the blower 22 can be used instead of the diaphragm 21 in FIG. . Of course, it is possible not to provide such a member. The selection of the appropriate member is optimally made according to the desired value of the process variables of the equipment, for example the speed of the godets 1.1 to 1.4. These process variables and the exact dimensions of the openings (17.1, 27.1 to 27.4) and the channels 18.1 to 18.4 are favorably accelerated depending on the size of the process variables and the dimensions of the equipment. A corresponding entrained airflow is created which is reduced or throttled. Similarly, the attachment location of the blower 22 or the diaphragm 21 is an example. In other words, for example, a configuration in which a plurality of blowers 22 or throttles 21 are arranged in the flow paths 18.1 to 18.4 or the wedge-shaped gap openings 27.1 to 27.4 is possible.

  FIG. 4 shows a third embodiment of the apparatus according to the present invention. Here, a side view similar to that shown in FIG. 2 is selected. Since many aspects remain the same, only the differences with respect to the first embodiment shown in FIG. 2 will be mentioned.

  In this embodiment, the door 23 simply includes a door outer wall 25 and a door grip 24. The door outer wall 25 is provided with wedge-shaped gap openings 27.1 to 27.4 and dead zone openings 17.1 to 17.4. In order to form the channels 18.1 to 18.4 between the wedge-shaped gap openings 27.1 to 27.4 and the dead zone openings 17.1 to 17.4, the tubes 19.1 to 19.4 are Is provided. The positions of the wedge-shaped gap openings 27.1 to 27.4 and the dead zone opening 17.1 are not shown in the correct positions here for the sake of clarity of the drawing. These openings 27.1 to 27.4, 17.1 are located in the location shown in FIG. The purpose of the flow path is the same as in the first and second embodiments.

  FIG. 5 shows a front view of a third embodiment of the present invention. In this figure, the shape of the tubes 19.1 to 19.4 between the wedge-shaped gap openings 27.1 to 27.4 and the dead zone openings 17.1 to 17.4 can be recognized.

  Accordingly, the embodiment of the device according to the invention shown in FIGS. 1 to 5 can have eight, sixteen or more yarns, and a group of yarns comprising a plurality of yarns arranged parallel to one another. 32 is particularly suitable for uniformly heating, stretching and relaxing with high running stability. And even fully drawn yarns with very fine sensitive yarn counts, so-called drawn yarns can be produced.

  The configuration and arrangement of the channels 18.1 to 18.4 shown in the examples are merely examples. For example, it is equally possible to arrange the channel on the back wall or side wall of the godet box 4 instead of at the door 23 of the godet box 4. The same is true for tubes 19.1-19.4. Therefore, the wedge-shaped gap openings 27.1 to 27.4 are located anywhere on the godet box 4 and the secondary godet box 6 as long as the wedge-shaped gap openings are connected to the wedge-shaped gap 15. Also good. The same is true for the dead zone openings 17.1-17.4. Of course, a plurality of dead zones 16 may exist. Furthermore, it is possible to combine the connection type and the arrangement form. For example, a configuration in which two pipes extend on the back side of the door and two passages are arranged in the hollow chamber 28 of the door is possible.

  The number of channels or wedge-shaped gap openings is also merely exemplary. One or more channels or wedge-shaped gap openings are possible respectively. Similarly, the accompanying air can be guided into the dead zone 16 by the air guide plate inside the godet box 4 without causing the accompanying air to flow out of the inner chamber of the godet box 4.

  1.2-1.4 godet, 2.2-2.4 godet peripheral wall, 3 mounting wall, 4 godet box, 5 insulation, 6 secondary godet box, 7 inlet opening, 8 outlet opening, 10.1 , 10.2, 10.3 Air guide plate, 11 Inflow plate, 12 Outlet plate, 13.1, 13.2 Guide roller, 14.1, 14.2 Guide peripheral wall, 15 Wedge-shaped gap, 16 Dead zone, 17.1 Dead zone opening, 18.1-18.4 flow path, 19.1-19.4 tube, 20 passage panel, 22 blower, 23 door, 24 door grip, 25 door outer wall, 26 door inner wall, 27. 1-27.4 wedge-shaped gap opening, 28 hollow chamber, 29 godet box wall, 30 side wall, 31.2-31.4 godet driving device, 32 yarn group, 33 Upper side, 34 Lower side, 35 Front side, 36 Back side

Claims (10)

A plurality of godets (1.1, 1.2, 1.3, 1.4) are provided, and a godet peripheral wall (2.1, 2.2, 2.3, 2.4) capable of driving the godet is provided. Are arranged inside the godet box (4), the godet box (4) having at least one air guide plate (10.1, 10.2, 10.3) An apparatus for drawing and stretching a plurality of yarns that have just been obtained,
The godet box (4) has at least one dead zone (16) and at least one suitable means (18.1, 18.2, 2) for guiding the accompanying air into the dead zone (16). 18.3, 18.4), a device for drawing and drawing a plurality of yarns that have just been spun.   Said means (18.1, 18.2, 18.3, 18.4) for guiding the entrained air into the dead zone (16) comprises at least one flow path (18.1, 18.2, 18.3). , 18.4).   The flow path (18.1, 18.2, 18.3, 18.4) extends between the wedge-shaped gap (15) and the dead zone (16), and the wedge-shaped gap (15) The godet peripheral wall (2.1, 2.2, 2.3, 2.4) and the adjacent air guide element, in particular the air guide plate (10.1, 10.2, 10.3) or the run-in plate Device according to claim 2, formed by (11) or a run-out plate (12).   3. A device according to claim 2, wherein the flow path (18.1, 18.2, 18.3, 18.4) has a circular or square cross section.   The flow path (18.1, 18.2, 18.3, 18.4) has a mass flow rate that flows through the flow path (18.1, 18.2, 18.3, 18.4). Device according to claim 2, connected to at least one means (21, 22) for adjusting.   6. The device according to claim 5, wherein the means (21, 22) for adjusting the mass flow rate are formed by a restriction (21) or a blower (22).   3. The device according to claim 2, wherein the flow path (18.1, 18.2, 18.3, 18.4) extends inside the godet box (4).   The flow path (18.1, 18.2, 18.3, 18.4) is formed inside the godet box wall (29) and / or by the door outer wall (25) and the door inner wall (26). The device according to claim 2, wherein the device extends inside the hollow chamber.   3. The device according to claim 2, wherein the flow path (18.1, 18.2, 18.3, 18.4) extends outside the godet box (4).   Said godet box wall (29) and / or said door inner wall (26) has at least one dead zone opening (17), said godet box wall (29) and / or said door inner wall (26). 10. The device according to claim 8 or 9, wherein at least one wedge-shaped gap opening (27).