JP2019131898A - Spinning drawing apparatus - Google Patents

Abstract

To provide means to save power consumption while well controlling temperature of a preheating roller.SOLUTION: A spinning drawing apparatus 3 of this invention includes: a preheating roller 33 that heats a spun yarn Y before drawing; a conditioning roller 35 disposed on a downstream side in a spun yarn running direction relative to the preheating roller 33 and set to be higher in temperature and to rotate with a higher speed than the preheating roller 33; and a heat insulating box 20 that houses the preheating roller 33 and the conditioning roller 35, the spinning drawing apparatus drawing the spun yarn Y between the preheating roller 33 and the conditioning roller 35. The spinning drawing apparatus further includes: partition parts 43a and 43b arranged between the preheating roller 33 and the conditioning roller 35; a communicating channel 47 that causes a low temperature space 45 being on a side where the preheating roller 33 is disposed relative to the partition parts 43a and 43b and a high temperature space 46 being on a side where the conditioning roller 35 is disposed relative to the partition parts 43a and 43b to communicate to each other; and shutters 48 and 49 for changing a channel area of the communicating channel 47.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a spinning / drawing apparatus for drawing a yarn.

  For example, Patent Document 1 discloses a spinning and drawing apparatus in which a plurality of preheating rollers (heating rollers in Patent Document 1) and a plurality of tempering rollers are accommodated in a heat insulating box (heat insulating box in Patent Document 1). . The tempering roller is disposed downstream of the preheating roller in the yarn traveling direction, and is set at a higher temperature and higher speed than the preheating roller. After the yarn is heated to the drawing temperature by the plurality of preheating rollers, the yarn is drawn and drawn between the preheating roller that is the most downstream in the yarn running direction and the tempering roller that is the most upstream in the yarn running direction. The yarn is tempered by a plurality of tempering rollers.

  In such a spinning and drawing apparatus, heat transfer occurs from the vicinity of the high-temperature tempering roller to the periphery of the low-temperature preheating roller in the heat insulation box. However, if the amount of heat transfer becomes too large, the preheating roller The temperature may not be controlled. Therefore, in Patent Document 1, by covering the preheating roller with a blocking cover, the preheating roller is prevented from being affected by heat from the tempering roller, and the preheating roller can be accurately maintained at the set temperature.

JP 2014-101610 A

  However, if the preheating roller is covered with a blocking cover as in Patent Document 1, there is a side effect that heat from the high-temperature tempering roller cannot be used for heating the preheating roller. For this reason, there existed a problem that the power consumption of a spinning drawing apparatus increased.

  In view of the above problems, the spinning and stretching apparatus according to the present invention aims to suppress power consumption while favorably controlling the temperature of the preheating roller.

  The present invention includes a preheating roller that heats the yarn before drawing, a tempering roller that is disposed downstream of the preheating roller in the yarn traveling direction, and is set at a higher temperature and higher speed than the preheating roller, the preheating roller, A heat insulation box that houses the tempering roller, and a spinning and drawing device that draws a yarn between the preheating roller and the tempering roller, and disposed between the preheating roller and the tempering roller. A communication channel that communicates the partitioned partition, the low-temperature space on the side where the preheating roller is disposed with respect to the partition, and the high-temperature space on the side where the refining roller is disposed with respect to the partition And a shutter for changing the flow passage area of the communication flow passage.

  According to the present invention, the flow rate of the air flowing through the communication channel can be controlled by adjusting the opening of the shutter provided in the communication channel, and thus the amount of heat transferred from the high temperature space to the low temperature space. Can be controlled. In order to reduce power consumption while maintaining the preheating roller at the set temperature, it is preferable to move heat from the high temperature space to the low temperature space as much as possible so that the preheating roller does not exceed the set temperature. However, the optimum amount of heat transfer varies depending on conditions such as the set temperature of each roller and the outside air temperature determined according to the type of yarn. According to the present invention, by adjusting the opening of the shutter according to conditions, it is possible to suppress power consumption while favorably controlling the temperature of the preheating roller regardless of the conditions.

  In the present invention, the communication channel may be a channel formed at a position different from a yarn path between the preheating roller and the tempering roller.

  In this way, by providing the communication channel separately from the yarn path, heat can be prevented from flowing back from the low temperature space to the high temperature space due to the accompanying flow accompanying the yarn traveling, and heat can be efficiently transferred from the high temperature space to the low temperature space. Can be moved to. Further, the operation of the shutter is not limited by the thread.

  In the present invention, the communication channel may be formed between an inner surface of the heat insulation box and the partition portion.

  If it carries out like this, air will flow easily along the inner surface of a heat retention box, and heat can be efficiently moved from high temperature space to low temperature space.

  In the present invention, the preheating roller and the tempering roller are disposed so as to protrude from the back surface portion of the heat insulation box toward the front surface portion, and the communication flow path is an inner surface of a side surface portion of the heat insulation box. It is good to form between and the said partition part.

  If the communication channel is formed between the inner surface of the front surface (or rear surface) of the heat insulation box and the partition, a plurality of yarns are hung in the axial direction of the preheating roller and the tempering roller. In this case, the yarn close to the front surface (or back surface) is likely to sway under the influence of air flowing through the communication flow path, and the yarn close to the back surface (or front surface) is less likely to sway. Arise. Such a difference is undesirable because it causes variations in yarn quality. In this regard, as described above, when the communication flow path is formed between the inner surface of the side surface portion of the heat insulation box and the partition portion, the influence of the air flowing through the communication flow path is substantially equal to the plurality of yarns. Therefore, variation in yarn quality can be suppressed.

  In the present invention, the shutter may be movable in a direction approaching or moving away from the side surface of the heat insulation box.

  In this way, the flow passage area of the communication flow passage by the shutter can be easily adjusted.

  In the present invention, the front portion of the heat insulation box is an openable / closable portion, and a seal member may be provided between the open / close portion and the partition portion.

  If there is a gap between the opening and closing part and the partition part, heat moves from the high-temperature space to the low-temperature space through the gap, and there is a risk that control of the amount of heat transfer through the communication channel will be out of order. Therefore, as described above, by providing the seal member between the opening and closing part and the partition part, the gap between the opening and closing part and the partition part can be eliminated, and the amount of heat transfer through the communication channel can be reduced. Control can be performed with high accuracy.

  In the present invention, the seal member may be attached to the partition portion.

  If the sealing member is attached to the opening / closing part, it is necessary to position the sealing member firmly in accordance with the position of the partitioning part. On the other hand, if the seal member is attached to the partition portion, there is no need to position the seal member, and the attaching operation is simplified.

  In the present invention, a blocking member extending from a position closer to the tempering roller than the communication channel in the side surface portion of the heat retaining box is provided toward the outer peripheral surface of the tempering roller, and the tempering roller It is preferable that the tempering roller is rotating so that a portion of the outer peripheral surface facing the tip of the blocking member is away from the communication channel.

  According to such a configuration, the accompanying flow accompanying the traveling of the yarn is blocked by the blocking member, and the heat contained in the accompanying flow can be prevented from escaping in the direction away from the communication flow path. Therefore, heat can be efficiently transferred from the high temperature space to the low temperature space.

  In the present invention, a plurality of the shutters may be provided in the air flow direction in the communication channel.

  According to such a configuration, by adjusting the opening degree of each shutter, it becomes possible to finely control the air flow and flow rate in the communication channel.

  In the present invention, it is preferable that a plurality of the partition portions are provided between the low temperature space and the high temperature space in the air flow direction in the communication channel.

  By providing a plurality of partition portions in this manner, the heat insulation between the high temperature space and the low temperature space can be improved, and the amount of heat transferred through the communication channel can be controlled with high accuracy.

  In the present invention, a plurality of the preheating rollers are provided in the yarn traveling direction, and the partition portion is disposed between the final preheating roller on the most downstream side in the yarn traveling direction and the tempering roller among the plurality of preheating rollers. The communication that communicates the low temperature space on the side where the final preheating roller is disposed with respect to the partitioning portion and the high temperature space on the side on which the tempering roller is disposed with respect to the partitioning portion. The shutter may be provided in the flow path.

  When a plurality of preheating rollers are provided, the yarn is sequentially heated by each preheating roller, so that the final preheating roller consumes less heat by heating the yarn. Further, the final preheating roller is arranged near the tempering roller. Therefore, the temperature of the final preheating roller is likely to rise due to the influence of heat from the tempering roller as compared to other preheating rollers. Furthermore, since the yarn is drawn between the final preheating roller and the tempering roller, the temperature control of the final preheating roller requires particularly high accuracy. For this reason, this invention which can perform temperature control favorably is especially effective with respect to the last preheating roller.

It is a mimetic diagram showing a spinning take-up machine provided with a spinning drawing device of this embodiment. It is a figure which shows a spinning drawing apparatus in detail. It is an enlarged view near a communication channel. It is a top view of an upper shutter. It is sectional drawing in the VV cross section of FIG. It is a table | surface which shows the result of a verification experiment.

[Spinning take-up machine]
An embodiment of a spinning stretcher according to the present invention will be described. FIG. 1 is a schematic view showing a spinning take-up machine equipped with a spinning stretcher of this embodiment. As shown in FIG. 1, a spinning take-up machine 1 stretches a plurality of yarns Y formed by solidifying a molten fiber material such as polyester continuously spun from a spinning device 2 by a spinning stretcher 3. Thereafter, the yarn winding device 4 is configured to wind up. The direction shown in FIG. 1 is defined as indicating the direction of the spinning take-up machine 1.

  The spinning device 2 generates a plurality of yarns Y by continuously spinning a molten fiber material such as polyester. The plurality of yarns Y spun from the spinning device 2 are fed with the oil agent by the oil agent guide 10 and then sent to the spinning and stretching device 3 through the guide roller 11. The spinning drawing device 3 is a device for drawing a plurality of yarns Y, and is disposed below the spinning device 2. The spinning and drawing apparatus 3 has a configuration in which a plurality of godet rollers 31 to 35 are provided inside the heat insulation box 20. The spinning and drawing apparatus 3 will be described in detail later.

  The plurality of yarns Y drawn by the spinning drawing device 3 are sent to the yarn winding device 4 through the guide roller 12. The yarn winding device 4 is a device that winds a plurality of yarns Y, and is disposed below the spinning drawing device 3. The yarn winding device 4 includes a bobbin holder 13 and a contact roller 14. The bobbin holder 13 has a cylindrical shape extending in the depth direction of FIG. 1 and is driven to rotate by a motor (not shown). A plurality of bobbins B are mounted on the bobbin holder 13 in the axial direction. The yarn winding device 4 rotates a bobbin holder 13 to simultaneously wind a plurality of yarns Y around a plurality of bobbins B to produce a plurality of packages P. The contact roller 14 contacts the surfaces of the plurality of packages P, applies a predetermined contact pressure, and adjusts the shape of the package P.

[Spinning drawing equipment]
FIG. 2 is a view showing the spinning drawing apparatus 3 in detail. The spinning and drawing apparatus 3 includes a heat retaining box 20 and a plurality (five in this embodiment) of godet rollers 31 to 35 housed inside the heat retaining box 20. The heat insulating box 20 is box-shaped by an upper surface portion 21, a right side surface portion 22, a lower right inclined portion 23, a left side surface portion 24, a lower left inclined portion 25, a back surface portion 26 (see FIG. 5), and a front surface portion 27 (see FIG. 5). Is formed. The front surface portion 27 is attached to the left side surface portion 24 via a hinge (not shown), for example, and serves as an opening / closing portion that can be opened and closed by swinging back and forth around the hinge. In the lower portion of the right side surface portion 22, an introduction port 20 a for introducing a plurality of yarns Y into the heat insulation box 20 is formed. In the upper part of the right side surface portion 22, a lead-out port 20 b for leading a plurality of yarns Y to the outside of the heat insulation box 20 is formed.

  The godet rollers 31 to 35 are heating rollers that are rotationally driven by a motor (not shown) and have a heater (not shown). As shown in FIG. 5, the godet rollers 31 to 35 are disposed so as to protrude from the back surface portion 26 of the heat retaining box 20 toward the front surface portion 27, and rotate in the directions of the arrows in FIG. 2. The plurality of yarns Y introduced into the heat insulation box 20 from the introduction port 20a are wound around the outer peripheral surfaces of the godet rollers 31 to 35 in order, and finally led out to the outside of the heat insulation box 20 from the discharge port 20b. The

  The lower three godet rollers 31 to 33 are preheating rollers for preheating a plurality of yarns Y before drawing, and the surface temperatures thereof are higher than the glass transition point of the yarns Y (for example, about 80 ° C.). Is set. On the other hand, the upper two godet rollers 34 and 35 are tempering rollers for heat-setting a plurality of stretched yarns Y, and their surface temperatures are higher than the surface temperatures of the lower three godet rollers 31 to 33. The temperature is set (for example, about 130 to 140 ° C.). Further, the rotational speeds of the upper two godet rollers 34 and 35, that is, the yarn feeding speed, are higher than those of the lower three godet rollers 31 to 33. In the following description, the godet rollers 31 to 33 are referred to as “preheating rollers”, and the godet rollers 34 and 35 are referred to as “tempering rollers”.

  The plurality of yarns Y introduced into the heat insulation box 20 through the introduction port 20a are first preheated to a temperature at which they can be stretched while being fed by the preheating rollers 31-33. The plurality of preheated yarns Y are stretched by the difference in yarn feed speed between the preheating roller 33 that is most downstream in the yarn traveling direction and the tempering roller 34 that is most upstream in the yarn traveling direction. Further, the plurality of yarns Y are heated to a higher temperature while being sent by the tempering rollers 34 and 35, and the stretched state is heat set. The plurality of yarns Y drawn in this way are led out to the outside of the heat insulating box 20 through the lead-out port 20b.

  Rectifying members 41 to 44 are disposed inside the heat insulation box 20. The rectifying members 41 to 44 are plate-like members disposed so as to protrude from the back surface portion 26 of the heat insulating box 20 toward the front surface portion 27, and rectify the air flow inside the heat insulating box 20. Specifically, the rectifying members 41 to 44 are arranged such that the air flow from the inlet 20a to the outlet 20b inside the heat insulation box 20 is substantially along the yarn traveling direction.

  In addition, blocking members 51 to 54 are disposed inside the heat insulating box 20. The blocking members 51 to 54 extend toward the outer peripheral surface of the tempering roller 34 or 35, and their tip portions are close to the outer peripheral surface of the tempering roller 34 or 35. In the heat insulation box 20, an accompanying flow is generated as the plurality of yarns Y travels. However, when the accompanying flow advances while traveling along the yarn traveling direction while amplifying, a lot of heat escapes from the outlet 20b. The heat insulation effect by the heat insulation box 20 is reduced. Then, the accompanying member is interrupted | blocked by the interruption | blocking members 51-54, and the fall of the heat retention effect is suppressed by suppressing amplification of an accompanying flow. The blocking members 51, 52, and 54 are configured to be swingable around the base so as not to hinder the threading of the tempering rollers 34 and 35. For details, refer to JP-A-2006-216882.

[Both controllability and energy saving of final preheating roller]
Here, when a plurality of preheating rollers 31 to 33 are provided as in the present embodiment, the plurality of yarns Y are sequentially heated by the respective preheating rollers 31 to 33, so that the final downstream side in the yarn traveling direction is the most. The preheating roller 33 consumes less heat by heating the yarn Y. Further, since the final preheating roller 33 is disposed near the high temperature tempering roller 35, it is easily affected by the heat from the tempering roller 35. Due to these factors, the surface temperature of the final preheating roller 33 may exceed the set temperature, and a situation may occur in which temperature control cannot be performed appropriately. Such problems were particularly noticeable in summer when the outside temperature was high.

  In order to solve such a problem, it is conceivable to provide a heat shield member between the final preheating roller 33 and the tempering roller 35. By providing the heat shield member, the influence of heat from the tempering roller 35 can be suppressed, and an excessive increase in the surface temperature of the final preheating roller 33 can be suppressed. However, as a side effect, it becomes impossible to efficiently raise the temperature of the final preheating roller 33 using the heat from the tempering roller 35, and the power consumption of the spinning and stretching apparatus 3 increases. Therefore, in this embodiment, the amount of heat transferred from the tempering roller 35 to the final preheating roller 33 can be controlled to maintain the surface temperature of the final preheating roller 33 at the set temperature, and the spinning and stretching apparatus 3. The power consumption can be reduced. Details will be described below.

  In the present embodiment, a rectifying member 43 that also serves as the heat shielding member is disposed between the final preheating roller 33 and the tempering roller 35. Hereinafter, the lower space where the final preheating roller 33 is disposed with respect to the rectifying member 43 is referred to as a low temperature space 45, and the upper space where the tempering roller 35 is disposed with respect to the rectifying member 43 is referred to as a high temperature space 46. say. Between the inner surface of the left side surface portion 24 of the heat retaining box 20 and the rectifying member 43, a communication flow path 47 that connects the low temperature space 45 and the high temperature space 46 is formed. Furthermore, shutters 48 and 49 for changing the flow channel area of the communication flow channel 47 are provided. The materials of the rectifying member 43 and the shutters 48 and 49 are not particularly limited, but in this embodiment, stainless steel is used in consideration of corrosion resistance and strength.

  FIG. 3 is an enlarged view of the vicinity of the communication channel 47. 4 is a top view of the upper shutter 48. FIG. 4a shows a state in which the upper shutter 48 is fully closed, and FIG. 4b shows a state in which the upper shutter 48 is fully opened. In FIG. 4, the upper shutter 48 is indicated by a bold line.

  As shown in FIG. 3, the rectifying member 43 includes an upper partition 43 a that extends in the left-right direction, a lower partition 43 b that is disposed below the upper partition 43 a with a space and extends in the left-right direction, and an upper partition. The left end portion of 43a and the left end portion of the lower partitioning portion 43b are connected, and a connecting portion 43c extending in the vertical direction is integrally formed. However, each part 43a-43c may each be comprised as a different body.

  As shown in FIG. 4 b, the left rear corner of the upper partition 43 a is a cutout 43 d cut out in a rectangular shape, and this cutout 43 d is the upper end of the communication channel 47. ing. Although illustration is omitted, the left rear corner of the lower partition 43b is also a notch cut out in a rectangular shape, and this notch is the lower end of the communication channel 47. That is, the communication channel 47 is formed between the notch 43d formed in the upper partition 43a and the notch formed in the lower partition 43b.

  Two long holes 43e extending in the left-right direction are formed in the upper partition 43a in the front-rear direction. On the other hand, the upper shutter 48 is a rectangular plate-like member, and is attached to the upper surface of the upper partition 43a. The upper shutter 48 has a dimension capable of closing the notch 43d. In the upper shutter 48, two round holes (not shown) are formed in the front-rear direction corresponding to the two long holes 43e formed in the upper partition 43a. As shown in FIG. 3, the upper shutter 48 is fixed to the upper partition portion 43a by passing the bolt 71 through the round hole of the upper shutter 48 and the elongated hole 43e of the upper partition portion 43a and tightening the nut 72 to the bolt 71. Can do. The lower partition 43b and the lower shutter 49 have the same configuration, and the lower shutter 49 can be fixed to the lower partition 43b by bolts 73 and nuts 74.

  According to such a configuration, the upper shutter 48 is moved in the left-right direction along the elongated hole 43e in a state where the nut 72 is loosened, thereby opening the opening of the upper shutter 48 (opening of the notch 43d of the upper partition 43a). The flow area of the communication flow path 47 can be adjusted. Similarly, the opening degree of the lower shutter 49 (the degree of opening of the notch portion of the lower partition portion 43b) is changed by moving the lower shutter 49 in the left-right direction along the elongated hole while the nut 74 is loosened. In addition, the channel area of the communication channel 47 can be adjusted.

  For example, as shown in FIG. 4a, when the shutters 48 and 49 are moved to the left until they abut against the inner surface of the left side surface 24 of the heat retaining box 20, the communication channel 47 can be closed. On the other hand, when the shutters 48 and 49 are moved to the right side away from the left side surface portion 24, the communication flow path 47 is gradually opened, and the communication flow path 47 can be fully opened as shown in FIG. 4b. . Further, by individually adjusting the opening degrees of the shutters 48 and 49, it is possible to finely control the flow rate and flow of air in the communication channel 47.

  5 is a cross-sectional view taken along the line VV of FIG. In order to prevent the opening / closing part 27 of the heat insulation box 20 from being closed, the front end of the rectifying member 43 is designed to be slightly separated from the opening / closing part 27 in the closed state, as shown in FIG. However, if it does so, air will pass between the high temperature space 46 and the low temperature space 45 through the clearance gap between the upper side partition part 43a and the opening-and-closing part 27, and the clearance gap between the lower side partition part 43b and the opening / closing part 27. The flow of As a result, heat may move from the high temperature space 46 to the low temperature space 45 more than expected.

  In order to suppress this, in this embodiment, as shown in FIGS. 4 and 5, a seal member 63 is attached to the front edge of the upper partition 43a. The seal member 63 is made of, for example, silicon or rubber, and is shaped and dimensioned so that the seal member 63 comes into close contact with the inner surface of the opening / closing portion 27 when the opening / closing portion 27 is closed. In order to prevent the upper shutter 48 and the seal member 63 from interfering with each other, a gap is provided between the upper shutter 48 and the opening / closing part 27 as shown in FIG.

  As described above, the provision of the blocking members 51 to 54 suppresses the heat from coming out of the heat insulation box 20 along with the accompanying flow. This contributes to efficiently transferring heat to the low temperature space 45. As shown in FIG. 3, the blocking member 54 extends toward the outer peripheral surface of the tempering roller 35 from a position on the tempering roller 35 side (upper side) of the communication channel 47 in the left side surface portion 24 of the heat retaining box 20. ing. The tempering roller 35 rotates clockwise so that the portion A of the outer peripheral surface of the tempering roller 35 that faces the tip of the blocking member 54 moves away from the communication channel 47. For this reason, the accompanying flow that flows around the tempering roller 35 is blocked by the blocking member 54, and heat contained in the accompanying flow can be prevented from escaping downstream from the blocking member 54 in the yarn traveling direction. Accordingly, more heat can be transferred from the high temperature space 46 to the low temperature space 45 via the communication channel 47.

  In the spinning / drawing apparatus 3 configured as described above, the opening degree of the upper shutter 48 and the lower shutter 49 is appropriately adjusted according to conditions such as the type of the yarn Y and the outside air temperature, so that the communication channel It is possible to control the flow rate of the air flowing through 47 and the amount of heat transfer. By adjusting the flow area of the communication flow path 47 so that heat is transferred from the high temperature space 46 to the low temperature space 45 as much as possible within a range where the final preheating roller 33 does not exceed the set temperature, the controllability of the final preheating roller 33 can be improved. The conflicting problem of energy saving of the spinning and drawing apparatus 3 can be balanced.

[Verification experiment]
Experiments were conducted to verify how the temperature of each part and the power consumption of the spinning and drawing apparatus 3 change by adjusting the opening of the shutters 48 and 49. FIG. 6 is a table showing the results of the verification experiment.
(Experimental conditions)
・ Set temperature of preheating rollers 31 to 33: 80 ° C.
・ Set temperature of tempering rollers 34 and 35: 134 ° C
・ Experimental pattern: When shutters 48 and 49 are fully opened and fully closed (Measurement value)
-ON rate of heaters of preheating rollers 31-33 and tempering rollers 34, 35-Temperature of low temperature space 45 and high temperature space 46-Power consumption of spinning drawing device 3

  The “heater ON rate” indicates a ratio of time during which the heater is operated in order to maintain the surface temperature of each of the heating rollers 31 to 35 at the set temperature. That is, it is considered that the lower the heater ON rate, the more energy saving. However, when the heater ON rate becomes 0%, there is a high possibility of exceeding the set temperature without operating the heater. Therefore, in consideration of controllability, it is preferable that the heater ON rate is always a certain value (for example, 1% or more). The temperatures of the low temperature space 45 and the high temperature space 46 were measured at points L and H shown in FIGS. 3 and 5, respectively.

  When the shutters 48 and 49 are fully opened, the temperature of the low-temperature space 45 is increased by 20 ° C. or more, and the ON rate of the heater of the final preheating roller 33 is also decreased by about 7%, compared to the fully closed case. That is, it is shown that a large amount of heat has moved from the high temperature space 46 to the low temperature space 45 via the communication channel 47 by fully opening the shutters 48 and 49. It should be noted that even when the shutters 48 and 49 are fully opened, the temperature of the high-temperature space 46 is only slightly lower than when the shutters are fully closed, and the ON rate of the heater of the tempering roller 35 is also almost changed. It is a point not to do. This is because the heat that was exhausted from the high temperature space 46 to the outside of the heat insulation box 20 through the outlet 20b was effectively utilized for heating the final preheating roller 33 by opening the communication channel 47. It is thought that means. To support this, when the shutters 48 and 49 are fully opened, the power consumption of the spinning stretcher 3 can be reduced by about 25% compared to the fully closed case.

  In this experiment, even when the shutters 48 and 49 were fully opened, the heater ON rate of the final preheating roller 33 was 23.1%, and there was room for further energy saving. Therefore, under the same conditions as in this experiment, the flow channel area of the communication flow channel 47 may be slightly increased, and the flow rate of air flowing through the communication flow channel 47 may be increased. In any case, in this experiment, the opening degree of the shutters 48 and 49 is adjusted and the flow passage area of the communication flow passage 47 is changed, so that the controllability of the final preheating roller 33 is maintained, and the spinning and drawing apparatus. It was shown that adjustment to maximize energy saving of 3 is possible.

[effect]
As described above, according to the spinning and drawing apparatus 3 of the present embodiment, the flow rate of the air flowing through the communication channel 47 is controlled by adjusting the opening degree of the shutters 48 and 49 provided in the communication channel 47. As a result, the amount of heat transferred from the high temperature space 46 to the low temperature space 45 can be controlled. In order to reduce power consumption while maintaining the preheating roller 33 at the set temperature, it is preferable to transfer heat from the high temperature space 46 to the low temperature space 45 as much as possible so that the preheating roller 33 does not exceed the set temperature. However, the optimum amount of heat transfer varies depending on conditions such as the set temperature of each roller and the outside air temperature determined according to the type of yarn Y. According to the present embodiment, by adjusting the opening degree of the shutters 48 and 49 according to the conditions, the power consumption can be suppressed while favorably controlling the temperature of the preheating roller 33 regardless of the conditions.

  In the present embodiment, as shown in FIG. 2, the communication flow path 47 is a flow path formed at a position different from the yarn path between the preheating roller 33 and the tempering roller 35. Thus, by providing the communication channel 47 separately from the yarn path, it is possible to prevent heat from flowing back from the low temperature space 45 to the high temperature space 46 due to the accompanying flow accompanying the traveling of the yarn Y, and from the high temperature space 46 to the low temperature space. Heat can be efficiently transferred to 45. Further, the operations of the shutters 48 and 49 are not limited by the yarn Y.

  In the present embodiment, the communication channel 47 is formed between the inner surface of the heat retaining box 20 and the partition portions 43a and 43b. In this way, air easily flows along the inner surface of the heat insulation box 20, and heat can be efficiently transferred from the high temperature space 46 to the low temperature space 45.

  In the present embodiment, the preheating roller 33 and the tempering roller 35 are disposed so as to protrude from the back surface portion 26 of the heat insulation box 20 toward the front surface portion 27, and the communication channel 47 is formed on the side surface of the heat insulation box 20. It is formed between the inner surface of the part 24 and the partition parts 43a and 43b. If the communication flow path 47 is formed between the inner surface of the front surface portion 27 (or the back surface portion 26) of the heat retaining box 20 and the partition portions 43a and 43b, the axial direction of the preheating roller 33 and the tempering roller 35 is assumed. When a plurality of yarns Y are hung on the yarn, the yarn Y close to the front surface portion 27 (or the back surface portion 26) is likely to be swayed by the air flowing through the communication channel 47, and the back surface portion 26 (or the front surface portion). The yarn Y close to 27) has a difference such that the yarn does not easily sway. Such a difference is undesirable because it causes variations in the quality of the yarn Y. In this regard, as described above, when the communication channel 47 is formed between the inner surface of the side surface portion 24 of the heat retaining box 20 and the partition portions 43a and 43b, the influence of the air flowing through the communication channel 47 has a plurality of effects. Since the yarn Y is substantially equal to the yarn Y, it is possible to suppress variation in the quality of the yarn Y.

  In the present embodiment, the shutters 48 and 49 are configured to be movable in a direction approaching or moving away from the side surface portion 24 of the heat retaining box 20. In this way, adjustment of the channel area of the communication channel 47 by the shutters 48 and 49 can be easily performed.

  In the present embodiment, the front surface portion 27 of the heat retaining box 20 is an openable / closable opening / closing portion, and a seal member 63 is provided between the opening / closing portion 27 and the upper partitioning portion 43a. If there is a gap between the opening / closing part 27 and the upper partition part 43a, the heat moves from the high temperature space 46 to the low temperature space 45 through the gap, and the control of the amount of heat transfer through the communication channel 47 is out of order. There is a risk that. Therefore, as described above, by providing the seal member 63 between the opening / closing part 27 and the upper partition part 43a, the gap between the opening / closing part 27 and the upper partition part 43a can be eliminated, and the communication channel 47 is provided. It is possible to accurately control the amount of heat transfer through the.

  In the present embodiment, the seal member 63 is attached to the upper partition 43a. If the sealing member 63 is attached to the opening / closing part 27, it is necessary to position the sealing member 63 firmly in accordance with the position of the upper partition part 43a. On the other hand, if the seal member 63 is attached to the upper partitioning portion 43a, the seal member 63 is not required to be positioned and the attachment work is simplified.

  In the present embodiment, a blocking member 54 extending from the position on the side of the refining roller 35 to the outer peripheral surface of the refining roller 35 from the position on the side of the communication channel 47 in the side surface 24 of the heat retaining box 20 is provided. The tempering roller 35 rotates so that a portion A of the outer peripheral surface of the roller 35 that faces the tip of the blocking member 54 moves away from the communication channel 47. According to such a configuration, the accompanying flow accompanying the traveling of the yarn Y is blocked by the blocking member 54, and heat contained in the accompanying flow can be suppressed from escaping in a direction away from the communication flow path 47. Therefore, heat can be efficiently transferred from the high temperature space 46 to the low temperature space 45.

  In the present embodiment, a plurality of shutters 48 and 49 are provided in the air flow direction D (see FIG. 3) in the communication flow path 47. According to such a configuration, it is possible to finely control the air flow and flow rate in the communication channel 47 by adjusting the opening of each shutter 48 and 49.

  In the present embodiment, a plurality of partition portions 43 a and 43 b are provided between the low temperature space 45 and the high temperature space 46 in the air flow direction D in the communication flow path 47. By providing the plurality of partition portions 43a and 43b in this way, the heat insulation between the high temperature space 46 and the low temperature space 45 can be improved, and the amount of heat transferred through the communication channel 47 can be accurately controlled. Can be done well.

  In the present embodiment, partition portions 43a and 43b are disposed between the final preheating roller 33 and the tempering roller 35, and the shutter 48, the communication channel 47 that communicates the low temperature space 45 and the high temperature space 46, 49 is provided. When a plurality of preheating rollers 31 to 33 are provided, the yarn Y is sequentially heated by each of the preheating rollers 31 to 33. Therefore, the final preheating roller 33 consumes less heat by heating the yarn Y. Further, the final preheating roller 33 is disposed near the tempering roller 35. Therefore, the temperature of the final preheating roller 33 is likely to rise due to the influence of heat from the tempering roller 35 as compared to the other preheating rollers 31 and 32. Furthermore, since the yarn Y is stretched between the final preheating roller 33 and the tempering roller 35, the temperature control of the final preheating roller 33 requires particularly high accuracy. For this reason, the present invention that can perform the temperature control well is particularly effective for the final preheating roller 33.

[Other Embodiments]
Modifications in which various modifications are made to the above embodiment will be described.

  In the above embodiment, the communication channel 47 is formed between the left side surface portion 24 of the heat retaining box 20 and the partition portions 43a and 43b (rectifying member 43). However, the formation position of the communication channel 47 is not limited to this, and for example, the communication channel may be formed by opening openings in the partition portions 43a and 43b. Further, the number of communication channels is not limited to one, and two or more communication channels may be provided.

  In the above embodiment, the communication channel 47 is formed at a position different from the yarn path. However, a yarn path may be formed in the communication channel. In this case, the shutter cannot be fully closed, but it is possible to adjust the opening of the shutter within a range that does not block the yarn path.

  In the above embodiment, in the air flow direction D in the communication flow path 47, the plurality of partition portions 43a and 43b are provided, and the plurality of shutters 48 and 49 are provided. However, at least one partition and one shutter are sufficient.

  In the above embodiment, the shutters 48 and 49 are configured to be movable in the left-right direction. However, the specific configuration of the shutter is not limited to this, and may be one that opens and closes by a swinging operation, for example.

  In the above embodiment, the channel area of the communication channel 47 is adjusted by the operator moving the shutters 48 and 49. However, a shutter drive device (not shown) for moving the shutters 48 and 49 may be provided, and the flow channel area of the communication flow channel 47 may be adjusted by the shutter drive device. In this case, the temperature of the final preheating roller 33 cannot be controlled by automatically adjusting the opening degree of the shutters 48 and 49 according to the temperature at a predetermined location (for example, the temperature of the low temperature space 45 or the surface temperature of the final preheating roller 33). The situation can be prevented from occurring.

  In the said embodiment, in order to eliminate the clearance gap between the opening-and-closing part 27 and the upper partition part 43a of the heat retention box 20, the seal member 63 shall be attached to the upper partition part 43a. However, the seal member 63 may be attached to the opening / closing part 27. Alternatively, the seal member 63 can be omitted.

  In the said embodiment, it comprised so that heat could be efficiently moved from the high temperature space 46 to the low temperature space 45 by providing the interruption | blocking member 54. FIG. However, the blocking member 54 may be omitted.

  In the above embodiment, by providing the communication channel 47, the final preheating roller 33 can be efficiently heated. Similarly, in order to efficiently raise the temperature of the preheating roller 32, a communication channel is provided between the right side surface portion 22 of the heat retaining box 20 and the rectifying member 42, and a shutter is provided to the communication channel. You may make it provide. Alternatively, the communication channel may be formed by opening an opening in the rectifying member 42.

  In the above embodiment, the plurality of preheating rollers 31 to 33 and the plurality of tempering rollers 34 and 35 are provided. However, it is not essential to provide a plurality of preheating rollers and tempering rollers, and at least one preheating roller and tempering roller may be provided.

3: Spinning and drawing device 20: Insulation box 24: Side part 26: Back part 27: Front part (opening / closing part)
31-33: Preheating roller 33: Final preheating roller 34, 35: Conditioning roller 43a, 43b: Partition 45: Low temperature space 46: High temperature space 47: Communication flow path 48, 49: Shutter 54: Shut-off member 63: Seal member Y: Yarn

Claims (11)

A preheating roller for heating the yarn before drawing;
A tempering roller that is disposed downstream of the preheating roller in the yarn traveling direction and is set at a higher temperature and higher speed than the preheating roller;
A heat retaining box for accommodating the preheating roller and the tempering roller,
A spinning and stretching device for stretching a yarn between the preheating roller and the tempering roller,
A partition disposed between the preheating roller and the tempering roller;
A communication channel that communicates the low-temperature space on the side where the preheating roller is disposed with respect to the partition portion and the high-temperature space on the side on which the tempering roller is disposed with respect to the partition portion;
A shutter for changing the channel area of the communication channel;
The spinning and drawing apparatus further comprising:   The spinning / drawing device according to claim 1, wherein the communication channel is a channel formed at a position different from a yarn path between the preheating roller and the tempering roller.   The spinning / drawing device according to claim 1 or 2, wherein the communication channel is formed between an inner surface of the heat insulation box and the partition. The preheating roller and the tempering roller are disposed so as to protrude from the back surface portion of the heat insulation box toward the front surface portion,
The spinning / drawing device according to claim 3, wherein the communication channel is formed between an inner surface of a side surface portion of the heat insulation box and the partition portion.   The spinning / drawing apparatus according to claim 4, wherein the shutter is movable in a direction approaching or moving away from the side surface of the heat insulation box. The front part of the heat insulation box is an openable / closable part,
The spinning stretcher according to claim 4 or 5, wherein a seal member is provided between the opening / closing part and the partition part.   The spinning stretcher according to claim 6, wherein the seal member is attached to the partition portion. A blocking member is provided extending from the position on the tempering roller side to the outer peripheral surface of the tempering roller from the side of the side wall of the heat insulation box,
8. The heat treatment roller according to claim 4, wherein the heat treatment roller rotates so that a portion of the outer peripheral surface of the heat treatment roller facing the tip of the blocking member is away from the communication flow path. The spinning drawing apparatus according to claim 1.   The spinning / drawing apparatus according to any one of claims 1 to 8, wherein a plurality of the shutters are provided in a direction of air flow in the communication channel.   The spinning according to any one of claims 1 to 9, wherein a plurality of the partition portions are provided between the low temperature space and the high temperature space in the air flow direction in the communication channel. Stretching device. A plurality of the preheating rollers are provided in the yarn traveling direction,
The partition is disposed between the final preheating roller on the most downstream side in the yarn traveling direction among the plurality of preheating rollers and the tempering roller,
In the communication flow path for communicating the low temperature space on the side where the final preheating roller is disposed with respect to the partition portion and the high temperature space on the side on which the refining roller is disposed with respect to the partition portion, The spinning / drawing apparatus according to any one of claims 1 to 10, wherein the shutter is provided.

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