JP2005206989A - Yarn heating apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn heating apparatus that has a simple and inexpensive structure and can produce yarn of excellent quality with increased productivity. <P>SOLUTION: This yarn heating apparatus is equipped with a heating means for heating the running yarn (1) and a yarn-contacting plate (3) that is detachably attached to the heating means and comes into contact with the running face of the yarn (4). A filler (3) having a thermal conductivity of ≥ 1.0 W/m k is arranged between the heating means (1) and the yarn-contacting plate. As the filler (3), a silicone oil containing a thermally conductible substance is preferably cited. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a yarn heating device for heating a running yarn such as a synthetic fiber during drawing and false twisting substantially uniformly.

  2. Description of the Related Art Conventionally, a yarn heating device has been used when performing processing such as drawing and false twisting on a running yarn such as synthetic fiber. As this yarn heating device, for example, a contact type having a configuration in which a yarn contact plate that directly contacts the traveling surface of the traveling yarn and a heating means for heating the contact yarn plate are integrated so as not to be separated. A yarn heating device is generally used.

  As another configuration example of the contact-type yarn heating device, a contact-type yarn heating device has been proposed in which the yarn-contacting plate is detachably fastened and fixed to the heating means by a bolt (for example, , See Patent Document 1). As shown in FIG. 3, the yarn heating device 101 described in Patent Document 1 has a heat medium heater 102 for heating the running yarn 100 and heat generated by the heat medium heater 102. A heat transfer plate 103 to be transmitted and a yarn contact plate 104 to be heat-transferred and heated by the heat transfer plate 103 are provided. A catalyst 105 heated by a heat medium heater 102 is enclosed in the main body of the yarn heating apparatus 101.

  A part of the yarn contact plate 104 is installed in a non-contact state with respect to the heat transfer plate 103. An adjustment bolt 106 is provided for adjusting the contact length and the installation interval between the heat transfer plate 103 and the yarn contact plate 104 in the traveling direction of the yarn 100. In the yarn contact plate 104, a groove (not shown) is engraved along the running direction of the yarn 100 in order to regulate the running position of the yarn 100.

In the yarn heating device 101 described in Patent Document 1, the yarn contact plate 104 can be detachably provided on the heat transfer plate 103, and the contact distance and the installation interval between the yarn contact plate 104 and the heat transfer plate 103. Can be changed. Thereby, it is supposed that the heating conditions of the yarn-contacting plate can be freely changed.
JP-A-7-126945

  By the way, in the conventional contact type yarn heating apparatus, a method of rubbing the traveling yarn 100 against the yarn contact plate 104 is general. For this reason, due to its structure, wear occurs between the yarn contact surface of the yarn contact plate 104 used for heating the running yarn 100 and the yarn 100 conveyed in contact with the yarn contact surface. Will occur.

  When a conventional contact-type yarn heating device is used for a long time, the yarn contact surface of the yarn contact plate 104 gradually becomes worn due to wear generated between the yarn contact surface of the yarn contact plate 104 and the traveling yarn 100. It is worn out. Due to this wear, irregularities are formed on the yarn contact surface. Due to the unevenness formed on the yarn contact surface, uniform heat cannot be applied to the traveling yarn 100, and the applied heat becomes uneven. Moreover, the damage given to the running yarn 100 is increased by the unevenness, causing abnormal yarn quality of the yarn.

  When the occurrence of yarn quality abnormality that hinders the quality of the yarn 100 increases, the yarn contact plate 104 must be replaced in order to maintain the quality of the yarn 100. However, in the replacement work of the yarn contact plate 104, in the contact-type yarn heating device in which the yarn contact plate 104 and the heating means are integrated so as not to be separated as described above, the entire yarn heating device must be replaced. There wasn't. For this reason, there are various problems that the replacement work of the yarn contact plate 104 is time consuming, the productivity is impaired, and the maintenance cost is increased. In addition, it is difficult to reprocess the worn yarn-contacting plate portion.

  On the other hand, in the contact-type yarn heating device 101 described in Patent Document 1, the yarn contact plate 104 and the heat transfer plate 103 of the heating means are configured to be separable. For this reason, when abnormal wear occurs on the yarn contact plate 104, only the yarn contact plate 104 can be replaced by removing the yarn contact plate 104 from the heat transfer plate 103. As a result, maintenance work such as maintenance and inspection for maintaining the quality of the yarn 100, maintenance, inspection and replacement can be easily performed, and there is an advantage that it leads to good productivity.

  However, in the yarn heating device described in Patent Document 1, a part of the yarn contact plate 104 is installed in a non-contact state with respect to the heat transfer plate 103 as described above. For this reason, due to its structure, the temperature change with time between the contact portion where the yarn contact plate 104 is in contact with the heat transfer plate 103 and the non-contact portion where the yarn contact plate 104 is separated from the heat transfer plate 103 is changed. Be susceptible. In other words, in the non-contact portion where the yarn contact plate 104 is separated from the heat transfer plate 103, heating spots are likely to occur, the variation in yarn quality is likely to increase, and the quality of the yarn 100 is degraded. . Accordingly, an object of the present invention is to provide a yarn heating device that has a simple structure, is inexpensive, can produce a yarn with excellent quality, and can improve productivity.

  The yarn heating device according to the present invention includes a heating unit that heats a traveling yarn, and a contact yarn that is detachably attached to the heating unit and that is disposed in contact with the traveling surface of the traveling yarn. A yarn heating device comprising a plate, wherein a filler having a thermal conductivity of 1.0 W / m · k or more is disposed between the heating means and the yarn-contacting plate. Yes.

  In particular, in the yarn heating device of the present invention, the filler is composed of a packed layer having a uniform thickness, and the packed layer is in close contact between the heating means and the weft plate. Is preferred. More preferably, the filler is silicon oil containing a heat conductive material.

  The yarn heating device of the present invention can be suitably used as a yarn heating device in drawing, false twisting and the like. In the apparatus of the present invention, a filler having a high thermal conductivity can be interposed between the heating means and the yarn-contacting plate. The filler is preferably composed of a packed layer having a uniform thickness, and it is particularly effective that the packed layer is in close contact with the heating means and the yarn-contacting plate without having a gap. is there.

  The yarn contact plate may be configured so that the temperature transmitted from the heating means can be maintained substantially uniformly in the running direction of the yarn, and the running yarn can be heated substantially uniformly. That's fine. Although not particularly limited in the present invention, it is preferable that the yarn contact plate is made of, for example, a plate material having a substantially constant thickness, and the yarn contact surface is formed in an arcuate shape. Problems such as damage caused by abrasion generated when the yarn passes through the contact plate can be reduced, and the quality of the yarn can be improved.

  By disposing the filler between the heating means and the yarn connection plate, the temperature transmitted from the heating means is maintained at a substantially constant temperature over the entire surface of the yarn contact surface of the yarn connection plate. It becomes possible to prevent heating spots from occurring on the yarn-contacting plate. For this reason, it becomes possible to heat the running yarn substantially uniformly and uniformly, and it becomes possible to produce a fiber having a stable yarn quality.

  As the filler, it is preferable to use a filler having a thermal conductivity of 1.0 W / m · k or more. Particularly preferably, a paste-like filler is used at 20 to 200 ° C. from the viewpoint of workability. As this filler, STYCAST 910-50 manufactured by Emerson & Cumming, silicon oxide-containing silicon oil can be used.

  On the other hand, when the thermal conductivity of the filler is less than 1.0 W / m · k, the heat applied from the heating means to the yarn-contacting plate is difficult to be transmitted. In addition, the temperature difference between the set temperature of the heating means and the measured temperature of the surface of the yarn-contacting plate is increased, which makes it difficult to manage the temperature of production conditions.

  In the apparatus of the present invention, the yarn contact plate can be detachably attached to the heating means by an appropriate fixing means such as a bolt. For this reason, when abnormal wear occurs on the yarn contact plate, only the yarn contact plate can be easily replaced without replacing the entire device of the present invention. In addition, maintenance work such as maintenance inspection, maintenance, inspection and replacement for maintaining the quality of the yarn can be performed easily and efficiently, and the maintenance cost can be reduced.

  In this way, the yarn-contacting plate can be easily removed from the heating means, so that the filler can be applied with a substantially uniform thickness on the back surface where the yarn-contacting plate contacts the heating means. Become. Further, when excessive wear occurs on the yarn-contacting plate, it is possible to rationally replace only the yarn-attaching plate coated with the filler substantially uniformly. Thereby, a yield becomes high and stable product quality can be obtained. In addition, high productivity can be obtained, and the economic effect is remarkably obtained.

  The filler preferably includes, for example, silicon oil from the viewpoint of heat resistance. More preferably, a filler containing a heat conductive powder such as metal or heat conductive particles in silicon oil is particularly effective. As the filler containing such a heat conductive material, for example, silicon grease in which a heat conductive material such as copper, aluminum, aluminum oxide, zinc oxide or the like is blended in silicon oil is preferable.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an explanatory diagram schematically showing an example of the yarn heating device of the present invention. In addition, the yarn heating device of the present invention can be suitably used as a yarn heating device in drawing, false twisting, and the like.

  In FIG. 1, the code | symbol 1 has shown typically the heating means which is a one part component of the yarn heating apparatus which heats the yarn 4 to drive | work. A yarn contact plate 2 disposed in contact with the traveling surface of the traveling yarn 4 is detachably attached to the heating means 1. In the present invention, the method of attaching the yarn contact plate 2 to the heating means 1 is not particularly limited. However, for example, attachment by a bolt (not shown) is preferable, and the attachment workability is stabilized. Since the yarn contact plate 2 can be detachably fastened to the heating means 1 with bolts (not shown), maintenance work such as maintenance inspection, maintenance, inspection and replacement for maintaining the quality of the yarn 4 Can be easily performed, and the maintenance cost can be reduced.

  As the yarn contact plate 2, for example, chrome plated stainless steel is particularly suitable. The form of the yarn contact plate 2 is not particularly limited, but the temperature transmitted from the heating means 1 can be maintained substantially uniformly in the traveling direction of the yarn 4 and the traveling yarn is substantially uniform. Any form can be used as long as it can be heated uniformly.

  The yarn contact plate 2 is not particularly limited in the present invention. For example, it is preferable that the yarn contact plate 2 is made of a plate material having a substantially constant thickness, and the yarn contact surface is formed in an arcuate shape. is there. Problems such as damage due to abrasion generated when the yarn 4 passes through the yarn contact plate 2 can be reduced, and the quality of the yarn 4 can be improved. Furthermore, the yarn contact plate 2 can be provided with a shape in which, for example, a straight deep groove 2a shown in FIG. 2 is formed at the center of a plate member having a thick rectangular cross section.

  The configuration of the heating means 1 is not particularly limited, and for example, a device having a similar configuration in part to the yarn heating device main body described in Patent Document 1 can be used. As the heating means 1, it is needless to say that various heating methods such as direct heating with a nichrome wire or a sheathed heater, heating with a heating medium, etc. can be used.

  In addition, for example, various guide members for guiding and guiding the yarn 4 on the yarn conveyance path can be attached to the heating means 1. Examples of the guide member include a cylindrical body having a circular cross section, a solid guide roller and a bar member, and a long bar provided with a plurality of comb pins having an equipitch comb-like shape.

  The most important feature of the present invention is that a filler 3 having a high thermal conductivity is interposed between the heating means 1 and the yarn contact plate 2. As the filler 3, it is preferable to use the filler 3 having a thermal conductivity of 1.0 W / m · k or more. The filler 3 preferably has a uniform thickness, and it is particularly effective that the filler 3 is in close contact without forming a gap between the heating means 1 and the yarn-connecting plate 2.

  Transmission from the heating means 1 by providing a configuration in which the filler 3 having a thermal conductivity of 1.0 W / m · k or more is adhered between the heating means 1 and the yarn-connecting plate 2 with a uniform thickness. It is possible to maintain the temperature at a substantially constant temperature across the yarn contact surface of the yarn-contacting plate 2, and to prevent heating spots from being generated on the yarn-contacting plate 2. As a result, the running yarn 4 can be heated evenly and uniformly, and fibers with stable yarn quality can be produced.

  When the thermal conductivity of the filler 3 is less than 1.0 W / m · k, the heat applied from the heating means 1 to the yarn-connecting plate 2 is difficult to be transmitted. In addition, the temperature difference between the set temperature of the heating means 1 and the actually measured temperature on the surface of the yarn-connecting plate 2 is increased, which makes it difficult to manage the production conditions.

  The filler 3 is preferably one containing, for example, silicon oil from the viewpoint of heat resistance. More preferably, a filler containing a heat conductive powder such as metal or heat conductive particles in silicon oil is particularly effective. As a filler containing such a heat conductive material, for example, silicon grease in which a heat conductive material such as copper, aluminum, aluminum oxide, zinc oxide or the like is dispersed in silicon oil is particularly effective.

  It is particularly preferable from the viewpoint of workability to use a pasty filler at 20 to 200 ° C. In the present invention, the yarn contact plate 2 can be detachably attached to the heating means 1 as described above. For this reason, it becomes possible to apply the filler 3 with a uniform thickness on the back surface (surface opposite to the yarn contact surface) where the yarn contact plate 2 contacts the heating means 1.

  In the device of the present invention, the yarn contact plate 2 can be easily detached from the heating means 1 as described above. For this reason, when excessive wear occurs on the yarn-contacting plate 2, the new yarn-contacting plate 2 uniformly coated with the filler 3 can be easily replaced with the existing yarn-attaching plate 2. For this reason, a yield becomes high and stable yarn quality can be obtained. In addition, high productivity can be obtained, and the economic effect is remarkably obtained.

Hereinafter, more specific Example 1 of the present invention will be described with reference to Table 1 together with Comparative Examples 1 and 2.
First, a method for measuring the surface temperature of the yarn contact plate 2 described in Example 1 and Comparative Examples 1 and 2 and an evaluation method thereof will be described.

  In order to evaluate the surface temperature of the yarn contact plate 2, the surface temperature of the yarn contact plate 2 was measured using a digital surface thermometer MODEL: HL-100 manufactured by Anritsu Keiki Co., Ltd. As a method for measuring the surface temperature, the length of the traveling yarn 4 contacting the yarn contact plate 2 (effective yarn contact length), that is, from above the yarn contact surface of the yarn contact plate 2 as shown in FIG. Measurement points A, B, C, D, and E were set at intervals of 50 mm, and the surface temperature of the yarn contact plate 2 at each measurement point A, B, C, D, and E was measured. In addition, the heat conductivity shown in Table 1 is the value measured by ASTM-D2214.

  A filler with a thermal conductivity of 1.5 W / m · k (STYCAST 910-50 manufactured by Emerson & Cumming Co., Ltd.) on the back surface of a stainless steel yarn-bonding plate 2 having a thickness of 0.5 mm, a width of 24 mm, and an effective yarn length of 300 mm. Zinc oxide-containing silicon oil) was applied with a uniform thickness. Next, the yarn contact plate 2 was fastened and fixed to the heating means 1 of the electric heating system with bolts.

  And the temperature of the heating means 1 was controlled to 100 degreeC. Ten minutes later, the surface temperature of the yarn contact plate 2 at each measurement point A, B, C, D, E was measured. The results are shown in Table 1. At each measurement point A, B, C, D, E, the surface temperature of the yarn connection plate 2 is a temperature difference within 0 to -1 ° C compared to the set temperature of the heating means 1, and the yarn connection plate The temperature spots for 2 were negligible.

(Comparative Example 1)
An experiment was performed under the same conditions as in Example 1 except that a yarn heating device in which the filler 3 was not applied to the back surface of the yarn contact plate 2 was used, and contact at each measurement point A, B, C, D, E was performed. The surface temperature of the thread plate 2 was measured. As is clear from Table 1, the surface temperature of the yarn-contacting plate 2 was greatly different depending on each of the measurement points A, B, C, D, and E, and heating spots were generated on the yarn-contacting plate 2. This is because the filler 3 was not applied between the heating means 1 and the back surface of the yarn-contacting plate 2, so that a gap was formed in that portion, and there was no gap between the heating means 1 and the back surface of the yarn-contacting plate 2. It means that the heating means 1 and the yarn contact plate 2 were attached in the contact state.

(Comparative Example 2)
The experiment was performed under the same conditions as in Example 1 except that silicon grease having a thermal conductivity of 0.7 W / m · k was used as the filler 3, and each measurement point A, B, C, D, E The surface temperature of the yarn contact plate 2 was measured. As is apparent from Table 1, the surface temperature of the yarn contact plate 2 is a low value of 5 ° C. or more as compared with the set temperature of the heating means 1, and the surface temperature of the yarn contact plate 2 is the initial target temperature. It was difficult to control.

  Table 1 shows the results of evaluating the surface temperature of the yarn contact plate 2 in Example 1 and Comparative Examples 1 and 2. From Table 1, it is preferable to use the yarn heating device of the present invention from the viewpoints of stabilization of the quality of the yarn and stabilization of workability as well as stabilization of drawing and false twisting. Understandable.

It is a structure explanatory view showing typically an example of the yarn heating device of the present invention. It is a figure showing a part of the yarn contact plate of the yarn heating device in a schematic cutout. It is composition explanatory drawing which shows an example of the conventional yarn heating apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating means 2 Wetted board 2a Groove 3 Filler 4 Yarn

Claims (3)

Yarn heating comprising heating means for heating the traveling yarn and a yarn contact plate that is detachably attached to the heating means and is arranged in contact with the running surface of the running yarn. A device,
A yarn heating device, wherein a filler having a thermal conductivity of 1.0 W / m · k or more is disposed between the heating means and the yarn-connecting plate.   2. The yarn heating device according to claim 1, wherein the filler comprises a packed layer having a uniform thickness, and the packed layer is in close contact between the heating means and the yarn-contacting plate.   The yarn heating apparatus according to claim 1 or 2, wherein the filler is silicon oil containing a heat conductive substance.

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