JP3517189B2 - Warp sizing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warp sizing machine which winds a glued warp sheet around a guide roller and then passes it through a cylinder dryer. 2. Description of the Related Art As one of warp sizing machines for gluing warp yarns and heating and drying the warp yarns, a hot air drying device and a cylinder drying device are provided downstream of a sizing device for applying glue to warp yarns. And a so-called warp sheet composed of a plurality of sheet-like warps glued by a gluing device is dried by passing through both drying devices (Japanese Patent Publication No. 6-3570).
No. 5). In this prior art, the glued warp sheet is passed through a hot air dryer to dry it to a certain extent in a non-contact state, and then the incompletely dried warp sheet is passed almost completely through a cylinder dryer. dry. Further, in a conventional warp dryer, a guide roller is disposed between a hot air dryer and a cylinder dryer. However, in the above-described warp sizing machine, the warp sheet passing through the guide roller is in an incompletely dried state although it is dried by the hot air drying device. For this reason, it cannot be avoided that the glue in an undried state adheres to the surface of the guide roller. [0005] The glue adhering to the surface of the guide roller is in a semi-dry state and has high adhesiveness. For this reason,
The running warp sticks to the surface of the guide roller and is separated from the guide roller when leaving the guide roller,
Fuzz (filament breakage in the case of filament yarn) occurs. Further, a large number of filaments may be cut and wrapped around the guide roller, which may cause the warp to be cut. The filament breaks and fluffs hinder the division of the warp in the subsequent process, further generating filament breaks and fluffs, and causing poor shedding during weaving by a loom, thereby hindering improvement in weaving performance. From the above, conventionally, a surface treatment such as a Teflon (registered trademark) coating process that does not easily cause glue to adhere to the guide roller has been performed. However, even if such a process is performed, it is not enough to prevent the adhesion of the glue, and if the drying is not performed to some extent by the hot air drying device, the glue adhesion increases in a short time. Therefore, regardless of the drying capacity of the cylinder drying device, the running speed of the warp is limited, and it is necessary to reduce the running speed of the warp so that the hot air drying device performs drying so that the glue does not adhere to the guide rollers. Was. Therefore, in a warp sizing machine, it is important to prevent the glue from adhering to the surface of a guide roller disposed upstream of the cylinder drying device. A warp sizing machine according to the present invention guides a warp sheet which has passed through a sizing step by a sizing apparatus or a hot-air drying step by hot-air drying and splitting by first contacting the warp sheet. To the cylinder dryer through the guide roller. Such a warp sizing machine includes a heating means for heating the guide roller. The warp sheet which has been glued and the glue is in an undried state comes into contact with the surface of the heated guide roller and is heated by the guide roller. By this, at least the surface portion of the warp sheet is dried until the warp sheet separates from the guide roller, and the glue adhered to the warp sheet is solidified to the extent that it does not adhere to the surface of the guide roller, and is fixed to the warp sheet. As a result, adhesion to the guide roller surface is prevented. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG.
The feeder 14 pulls out a plurality of warps wound around the warp beam 12 in the form of a warp sheet 16 and passes them through a gluing device 18. The feed device 14 is a known feed mechanism including a plurality of rollers, such as a feed roller, a guide roller and a nip roller disposed upstream and downstream of the feed roller. The gluing device 18 is a known device in which a predetermined amount of glue is attached to each warp of the warp sheet 16 by passing the warp sheet 16 through a plurality of rollers through a glue tank. The glued warp sheet 16 is passed through a hot air dryer 20 to be heated and dried. The hot-air drying device 20 is a known device that exposes the warp sheet 16 to hot air, thereby drying the undried warp sheet 16 to some extent without contact with the components of the hot-air drying device 20. The hot-air drying device 20 is disposed between the gluing device 18 and the cylinder drying device 22 in the illustrated example, and has a plurality of hot-air drying chambers 20 through which the warp sheets 16 pass.
a and 20a are arranged in series. Although the warp sheet 16 is dried to a certain extent by passing through the hot-air drying device 20, the glue adhering thereto is in an undried state where drying is insufficient. The warp sheet 16 is passed through the next cylinder drying device 22,
Heat and dry. The cylinder drying device 22 is a known device that includes a plurality of heating cylinders 22a that are heated by steam, and passes the undried warp sheets 16 while sequentially contacting the surface of the heating cylinder 22a. All the heating cylinders 22a are rotated in synchronization with the running speed of the warp sheet. The warp sheet 16 is connected to each heating cylinder 22a.
And is efficiently and completely dried by contact drying. The dried warp sheet 16 is wound around a winding beam 26 via a length measuring roller 24.
Although not shown, the warp sheet 16 is provided to a warp splitting device that prevents adjacent warps from being bonded to each other by glue at one or more points between the gluing device 18 and the winding beam 26. Passed through. The warp sizing machine 10 further includes guide rollers 28 and 30 for increasing the length of winding of the warp sheet 16 around the uppermost and lowermost heating cylinders 22a, respectively, on the upstream side of the cylinder drying device 22. And a heating fluid supply device 32 that supplies a high-temperature heating fluid, such as steam, water, or flame-retardant oil, to the guide roller 28 on the upstream side. The warp sheet 16 has guide rollers 28, 3
Since the length of wrapping around the uppermost and lowermost heating cylinders 22a is increased by 0, heating and drying can be performed more efficiently and completely. Further, since the guide roller 28 is heated by the heating fluid from the heating fluid supply device 32, the warp sheet 16 is further heated and dried by contacting the guide roller 28. In the illustrated example, the guide roller 28 is a roller of a so-called depolarizing drive (follow-up rotation) that is rotated in accordance with the movement of the warp sheet 16. However, the guide roller 28 may be a so-called positive drive (positive rotation) roller that is positively rotated in synchronization with the running speed of the warp sheet 16. The guide roller 28 is a heating cylinder 2
It has a diameter smaller than 2a, and can be manufactured at a lower cost than the heating cylinder 22a. The warp sheet 16 which has passed through the hot air drying device 20 and has been dried to a certain extent is wound around the outer peripheral surface of the guide roller 28 and passes therethrough, so that it is heated and dried by the guide roller 28. As a result, at least the surface portion of the glue adhering to the warp sheet 16 is dried by the time the warp sheet 16 separates from the guide roller 28, and is solidified to such an extent that it does not adhere to the surface of the guide roller 28. The guide roller 28 is fixed and maintained and is prevented from adhering to the surface of the guide roller 28. If the glue does not adhere to the guide roller 28 as described above, the warp sheet 16 having passed through the hot air drying device 20
Since the drying state of the warp sheet may be more undried than that of the conventional sizing machine, the running speed of the warp sheet 16 can be increased as compared with the conventional warp sizing machine, and the production efficiency can be increased. If the running speed of the warp sheet 16 is not increased,
The temperature of the hot-air drying device 20 can be lower than in a conventional warp sizing machine. In the warp sizing machine 10, when the drying power of the hot air drying device 20 is reduced, the following additional effects can be obtained. (1) Even if a warp yarn cannot be dried at a high temperature because it affects the physical properties of the yarn, it can be dealt with only by lowering the hot air drying temperature without lowering the running speed of the warp yarn. Thus, there is no need to reduce the temperature and reduce the running speed of the warp yarn to take measures for sufficiently drying. (2) It is necessary to raise the drying temperature of the cylinder drying device by the amount of lowering the drying power by lowering the temperature of the hot air drying device. However, since the heating cylinder 22a is made of a metal having good heat conductivity, the warp sheet 16 comes into contact with the metal having good heat conductivity in the cylinder drying device 22 and is efficiently dried. Has higher thermal efficiency than a hot air dryer. Reducing the drying power of the hot-air drying device 20 with poor thermal efficiency and increasing the drying power of the cylinder drying device 22 with good thermal efficiency saves energy for both the drying devices 20 and 22 as a whole. FIG. 2 shows a warp sizing machine 40 dedicated to spun yarn. In spun yarn, since the generation of fluff is not an important problem, the warp sizing machine 40 is not provided with a hot air drying device having poor thermal efficiency, and the cylinder drying device 22 is replaced with a sizing device in order to shorten the machine length. 18 is arranged above. In the warp sizing machine 40 as well, the guide roller 2 for increasing the length of the warp sheet 16 wound around the heating cylinder 22a on which the warp is wound first.
8 is heated by the heating fluid from the heating fluid supply device 32 to heat and dry the warp sheet 16 passing therethrough. Also in this embodiment, the guide roller 28 has a smaller diameter dimension than the heating cylinder 22a. In any of the above embodiments, the guide roller 28 may be constantly heated. However, if the guide roller 28 is heated only during the operation of the gluing machine, not only energy saving but also excessive drying of the glue when the gluing machine is stopped can be prevented. The surface of the guide roller 28 may be a metal, but is preferably a surface having a low friction coefficient such as a Teflon-coated surface. By doing so, the glue is less likely to adhere to the guide roller 28. As the heating means for the guide roller 28, not only a high-temperature heating fluid but also other heating means such as an electric heater may be used. The heating means using an electric heater has an electric heater disposed in a guide roller 28, and controls the heating power by an externally provided guide roller controller to control the temperature and operating time of the electric heater. You can do it. When an electric heater is used as the heating means, the heating fluid supply device 32 is replaced with a heating power supply device such as a heating power supply and a controller. The guide roller 28 includes a heating cylinder 22a.
When the heating fluid is used as the heating means, the sealing technique at the connection between the guide roller 28 and the heating fluid circulation pipe is more difficult than the sealing technique at the heating cylinder 22a, and the heating fluid is heated. May leak to the outside. On the other hand, when the heating means uses an electric heater, there is no such fear and the guide roller 2
8 can be performed more safely. The present invention is not limited to the above embodiment. The present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings] FIG. 1 is a diagram showing one embodiment of a warp sizing machine according to the present invention. FIG. 2 is a view showing another embodiment of the warp sizing machine according to the present invention. [Explanation of symbols] 10,40 warp sizing machine 12 Warp beam 14 Feeding device 16 Warp sheet 18 Gluing device 20 Hot air dryer 22 Cylinder dryer 26 Winding beam 28 Guide roller 32 Heated fluid supply

Claims (1)

(57) [Claims 1] A warp sheet which has undergone a sizing step by a sizing apparatus or a hot air drying step by hot air drying and tearing is passed through a guide roller which is contacted and guided first. A warp sizing machine for guiding to a cylinder drying device, comprising a heating means for heating the guide roller.