Hybrid filament manufacturing device

Abstract

A mixed filament manufacturing apparatus is provided, which can suppress the swaying of the second group of filaments on the guided rollers and reduce potential damage to the filaments. It includes: heating rollers (31-35) for heating the first group of filaments (Y1) after being separated by the fiber guide (11); a feed roller (12) for guiding the first group of filaments (Y1) into the interior of the insulation box (30) from the inlet (30a); a feed roller (13) for guiding the first group of filaments (Y1) through the heating rollers (31-35) inside the insulation box (30) and out through the outlet (30b); and guide rollers (36, 37). The second group of yarns (Y2) after being split by the fiber splitter (11) is guided to the feed roller (13) without passing through the heating roller (31~35); the interlacing device (16); the fiber mixing device (18); and the yarn combination guide (20) have multiple guide parts along the axial direction on the upstream side of the feed roller (13) and the fiber mixing device (18) in the direction of yarn travel, which combine and guide the yarns of the first group of yarns (Y1) and the second group of yarns (Y2).

Description

Technical Field

[0001] The present invention relates to a mixed filament manufacturing apparatus that, after processing multiple filaments spun from a spinning machine into a first group of filaments and a second group of filaments, blends the first group of filaments and the second group of filaments to produce mixed filaments. Background Technology

[0002] For example, Patent Document 1 discloses a pulling device for pulling multiple filaments 10 spun from a spinning machine 2. In this document, for example... Figure 2 The rollers used to wind up the multiple filaments spun from the spinning machine 2 include a feed roller 16, five heating rollers 4 (4a-4e), and a feed roller 17. These rollers are arranged with their axes parallel to the front-to-back direction. The five heating rollers 4 (4a-4e) are housed in a heat-insulating box 26, where stretching and heat setting are performed. A slit 26b is formed on the lower part of the right side of the heat-insulating box 26, and a slit 26c is formed on the upper part of the right side of the heat-insulating box 26. The feed roller 16 is positioned immediately to the right of the slit 26b, and the feed roller 17 is positioned immediately to the right of the slit 26c. The multiple filaments spun from the spinning machine 2 are arranged in the left-to-right direction, but their arrangement direction is changed to the front-to-back direction and fed to the feed roller 16. Multiple filaments fed to the feed roller 16 enter the insulation box 26 through the slit 26b, are fed to the heating rollers 4a-4e, and exit through the slit 26c. The multiple filaments exiting from the slit 26c are fed to the feed roller 17. The multiple filaments fed to the feed roller 17 are further fed to the downstream feed roller 11.

[0003] In recent years, in the configuration of the traction device 100 disclosed in Patent Document 1, the manufacture of a blended filament (BSY: Bi Shrinkage Yarn) by mixing fully drawn yarn (FDY: Fully Drawn Yarn) that has undergone stretching and heat setting with partially oriented yarn (POY: Partially Oriented Yarn) that has neither undergone stretching nor heat setting has been studied. It is known that fully drawn yarn and partially oriented yarn have different shrinkage rates, and the blended filament formed by spinning these two types of yarn with different shrinkage rates has a good quality profile.

[0004] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2015-187324 Summary of the Invention

[0005] The problem that the invention aims to solve However, when manufacturing mixed filaments using the configuration of the traction device 100 disclosed in Patent Document 1, the tension of the partially oriented filaments, which have neither undergone stretching nor heat setting, is unstable. As a result, filament wobbling sometimes occurs on the guided roller. If filament wobbling occurs on the guided roller, the filaments may be damaged due to friction between the filaments and the roller surface.

[0006] The present invention was made in view of the above circumstances, and its object is to provide a mixed filament manufacturing apparatus that, in manufacturing mixed filaments in which a first group of filaments that has undergone stretching and heat setting is mixed with a second group of filaments that has neither undergone stretching nor heat setting, can suppress the filament oscillation of the second group of filaments on the guided roller and reduce possible damage to the filaments.

[0007] Methods for solving problems (1) To solve the above-mentioned problems, the mixed filament manufacturing apparatus 1 of the present invention, after performing different treatments on the first group of filaments and the second group of filaments among multiple filaments spun from a spinning machine, mixes the first group of filaments and the second group of filaments to manufacture mixed filaments, characterized in that it comprises: The fiber separator separates the multiple fibers into the first group of fibers and the second group of fibers. The first heating roller heats the first group of filaments after they have been separated by the fiber separator. The second heating roller is positioned downstream of the first heating roller in the direction of yarn travel, and stretches and heat-sets the first group of yarns between the first heating roller and the first heating roller. The insulated box houses the first heating roller and the second heating roller, and has a first opening formed in the lower part of the wall and a second opening formed in the upper part of the wall; The first feeding roller causes the first group of yarns, after being separated by the fiber separator, to enter the heat preservation box from the first opening. The second feed roller guides the first set of yarns that enter the insulation box from the first opening, pass through the first heating roller and the second heating roller, and are then led out of the insulation box from the second opening. The guide roller guides the second group of yarns, after being split by the fiber splitter, to the second feed roller without passing through either the first heating roller or the second heating roller. The yarn-coupling device is located downstream of the second yarn-feeding roller in the yarn-carrying direction, so that the first group of yarns and the second group of yarns are co-coupled. A fiber mixing device is disposed upstream of the yarn traveling direction of the aforementioned yarn mixing device, thereby auxiliaryly mixing the first group of yarns with the second group of yarns; and The yarn combination guide is positioned downstream of either the second heating roller or the guide roller in the yarn travel direction and upstream of either the fiber mixing device or the second feeding roller in the yarn travel direction. Along the axial direction of the second feeding roller, it has a plurality of guide portions that combine and guide the first group of yarns that are stretched and heat-set with the second group of yarns that are not stretched and heat-set.

[0008] According to the mixed filament manufacturing apparatus described in (1) above, a first group of filaments that have been stretched and heat-set is combined with a second group of filaments that have not been stretched and heat-set by having a plurality of guide portions along the axial direction of the second feed roller, and then guided toward the second feed roller. The movement of the first group of filaments and the second group of filaments in the arrangement direction is restricted by the guide portions, therefore, compared with the second feed roller, it is easier for the first group of filaments and the second group of filaments to be tangled. Therefore, the filament oscillation of the second group of filaments on the second feed roller can be suppressed by the first group of filaments, and the damage that may be caused to the second group of filaments can be reduced.

[0009] In addition, the fiber mixing device can be configured on the upstream side of the filament travel direction of the second feed roller, or on the downstream side of the filament travel direction of the second feed roller.

[0010] (2) In the mixed filament manufacturing apparatus of the present invention, it is more preferably that, The above-mentioned guide rollers are configured as follows: The lower angle of the two angles between the thread path of the second set of threads from the guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180±30 [°] (inclusive of upper and lower limits).

[0011] According to the mixed filament manufacturing apparatus described in (2) above, the lower angle of the two angles between the filament path of the second group of filaments from the guide roller to the filament combination guide and the filament path from the filament combination guide to the second feed roller is 180±30°. Therefore, damage to the second group of filaments that may be caused can be reduced. Specifically, the filament path of the second group of filaments from the guide roller to the second feed roller is preferably straight. However, if the filament combination guide is arranged downstream of the guide roller in the filament travel direction and upstream of the second feed roller in the filament travel direction, the second group of filaments may be bent in the filament combination guide, which may cause damage to the second group of filaments. In this regard, according to the mixed filament manufacturing apparatus described in (2) above, even if the filament combination guide is arranged downstream of the guide roller in the filament travel direction and upstream of the second feed roller in the filament travel direction, damage to the second group of filaments that may be caused can be reduced.

[0012] (3) In the mixed filament manufacturing apparatus of the present invention, it is more preferably that, The fiber mixing device is configured to be positioned upstream of the second feed roller in the direction of yarn travel, and to auxiliaryly combine the first group of yarns and the second group of yarns, and guide the auxiliaryly combined yarns toward the second feed roller.

[0013] According to the mixed filament manufacturing apparatus described in (3) above, since a fiber mixing device is provided downstream of the filament travel direction of the filament combination guide and upstream of the filament travel direction of the second feed roller, the first group of filaments and the second group of filaments can be auxiliaryly fused together, and the filaments fused together in this way can be guided to the second feed roller. Therefore, compared with the case where only the first group of filaments and the second group of filaments are combined and not fused together, the filament oscillation of the second group of filaments Y2 on the second feed roller can be further suppressed.

[0014] (4) In the mixed filament manufacturing apparatus of the present invention, it is more preferably that, The multiple filaments spun from the aforementioned spinning machine are arranged in a horizontal direction, and the aforementioned fiber guide is configured in the aforementioned horizontal direction. The second feed roller described above is configured to be axially horizontal and orthogonal to one of the aforementioned directions. The above-mentioned guide rollers have: The first guide roller, configured axially parallel to the second feed roller, guides the second group of yarns, after being split by the fiber separator, to change their orientation; and The second guide roller is located downstream of the first guide roller in the direction of yarn travel and above the first guide roller, and is configured to be axially parallel to the first guide roller.

[0015] According to the mixed filament manufacturing apparatus described in (4) above, the fiber splitting guide is arranged in a horizontal direction, and the second feed roller is arranged axially horizontally and orthogonal to one direction. Therefore, the second group of filaments, after being split by the fiber splitting guide, is guided towards the first guide roller after changing its arrangement direction. However, the second guide roller is arranged axially parallel to the first guide roller at a position higher than the first guide roller. Thus, even if the distance required to change the arrangement direction of the second group of filaments after being split by the fiber splitting guide is ensured, damage to the second group of filaments can be appropriately reduced.

[0016] In detail, the first guide roller is positioned lower to ensure the distance required to change the arrangement direction of the second group of filaments after being separated by the fiber separator. In this case, even without the second guide roller, if the filament combination guide is positioned along the filament path of the second group of filaments between the first guide roller and the second feed roller, bending of the second group of filaments can be suppressed, reducing potential damage to the second group of filaments. However, in this case, it is necessary for the first group of filaments exiting from the second opening to bend within the filament combination guide. Although the first group of filaments is stretched and heat-set, excessive bending could potentially damage them, which is undesirable. Furthermore, excessive bending could cause interference with the insulation box when the first group of filaments exits from the second opening. Therefore, by arranging the second guide roller downstream of the first guide roller in the direction of yarn travel and above the first guide roller, even if the distance required to change the arrangement direction of the second group of yarns after being split by the fiber guide is ensured, the bending of the first group of yarns can be kept constant and the damage to the second group of yarns can be reduced.

[0017] (5) In the mixed filament manufacturing apparatus of the present invention, it is more preferably that, The aforementioned second guide roller, the aforementioned second feed roller, and the aforementioned yarn guide assembly are configured such that, The upper angle of the two angles between the yarn path of the first group of yarns from the downstream roller in the yarn travel direction of the first group of yarns to the yarn guide assembly and the yarn path from the yarn guide assembly to the second feed roller is 180±30° (inclusive of upper and lower limits), and, The lower angle of the two angles between the thread path of the second group of threads from the second guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180±30 [°] (inclusive of upper and lower limits).

[0018] According to the mixed filament manufacturing apparatus described in (5) above, even when the distance required to change the arrangement direction of the second group of filaments after being split by the fiber guide is ensured, the filament oscillation of the second group of filaments Y on the second feed roller can be suppressed, and damage that may be caused to the first group of filaments and the second group of filaments up to the second feed roller can be reduced. In addition, interference between the first group of filaments and the insulation box can also be prevented.

[0019] (6) In the hybrid filament manufacturing apparatus of the present invention, it is more preferably that, The second guide roller is configured such that the second group of yarns guided to the second feed roller is positioned below the first group of yarns guided to the second feed roller.

[0020] According to the mixed filament manufacturing apparatus described in (6) above, since the second group of filaments guided to the second feed roller is lower than the first group of filaments guided to the second feed roller, the first group of filaments Y1 is located higher than the second group of filaments Y2, and the filament oscillation of the second group of filaments Y2 on the feed roller 13 can be suppressed more reliably.

[0021] (7) In the mixed filament manufacturing apparatus of the present invention, preferably, The first guide roller and the second guide roller are arranged vertically along the wall of the insulation box.

[0022] According to the mixed filament manufacturing apparatus described in (7) above, by arranging the first guide roller and the second guide roller along the wall in the vertical direction, it is possible to suppress the enlargement of the mixed filament manufacturing apparatus in one direction and reduce damage to the second set of filaments.

[0023] (8) In the hybrid filament manufacturing apparatus of the present invention, it is more preferably that, The first guide roller and the second guide roller are arranged on the outside of the insulation box. The second group of yarns, after being separated by the fiber separator, does not enter the insulation box but is guided to the second feed roller.

[0024] According to the mixed filament manufacturing apparatus described in (8) above, the filament hanging operation is easy because it is only necessary to hang the filaments so that the second set of filaments conveyed from the guide roller is not introduced into the heat preservation box but guided to the feed roller.

[0025] Invention Effects According to the present invention, a mixed filament manufacturing apparatus can be provided, which can reduce potential damage to the filaments in the process of manufacturing a mixed filament formed by mixing a first group of filaments that has undergone stretching and heat setting with a second group of filaments that has neither undergone stretching nor heat setting.

[0026] Furthermore, the hybrid filament manufacturing apparatus of the present invention does not necessarily have all the configurations described in (1) to (8) above. For example, in the invention of the hybrid filament manufacturing apparatus described in (1) above, all the configurations described in (2) to (8) above are not necessary. In addition, within the scope of integration, the configuration described in (1) above and any one of the configurations described in (2) to (8) above can be arbitrarily combined to form the hybrid filament manufacturing apparatus of the present invention. Furthermore, when arbitrarily combining the configuration described in (1) above and any one of the configurations described in (2) to (8) above, it is not necessary to combine all the configurations described in (2) to (8) above. Within the scope of integration, a part of any one of the configurations described in (2) to (8) above can be combined. Attached Figure Description

[0027] Figure 1 This is a front view illustrating an example of a hybrid filament manufacturing apparatus according to an embodiment of the present invention.

[0028] Figure 2 This is a perspective view illustrating an example of a wire guide assembly according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram illustrating a preferred configuration example of the guide roller, filament assembly guide, fiber mixing device, and feed roller in a mixed filament manufacturing apparatus according to an embodiment of the present invention.

[0030] Figure 4 This is a front view of an example of a hybrid filament manufacturing apparatus for the first modified example.

[0031] Figure 5 This is a front view of an example of a hybrid filament manufacturing apparatus for the second variation.

[0032] Figure 6 This is a front view of an example of a hybrid filament manufacturing apparatus for the third variation.

[0033] Figure 7 This is a front view of an example of a hybrid filament manufacturing apparatus, representing the fourth variation.

[0034] Figure 8 This is a front view of an example of a hybrid filament manufacturing apparatus, representing the fifth variation. Detailed Implementation

[0035] Hereinafter, the embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Furthermore, for ease of explanation, as will be described later... Figure 1 as well as Figures 3-8 Define the vertical, horizontal, and forward / backward directions as shown.

[0036] [1. Overview of the Blended Filament Manufacturing Apparatus] First, the main reference Figure 1 An example of a hybrid filament manufacturing apparatus 1 according to an embodiment of the present invention (hereinafter referred to as "this embodiment") will be described. Figure 1 This is a front view showing an example of the hybrid filament manufacturing apparatus 1 of this embodiment.

[0037] The blended filament manufacturing apparatus 1 divides multiple filaments Y, which are synthetic fiber filaments formed by the curing of molten resin continuously spun from a spinning machine 2, into a first group of filaments Y1 and a second group of filaments Y2. The first group of filaments Y1 is then stretched and heat-set, resulting in filaments Y1 and Y2 having different shrinkage rates. Specifically, the blended filament manufacturing apparatus 1 stretches and heat-sets the first group of filaments Y1 to form a fully drawn filament (FDY), while the second group of filaments Y2 is neither stretched nor heat-set to form a partially oriented filament (POY). Subsequently, the blended filament manufacturing apparatus 1 blends the stretched filament (FDY), i.e., the first group of filaments Y1, with the partially oriented filament (POY), i.e., the second group of filaments Y2, to generate a blended filament Y3 (BSY). It is known that the blended filament Y3, composed of two types of yarns Y1 and Y2 with different shrinkage rates, has a good quality profile. Furthermore, in this specification, unless otherwise specified, the type of yarn will be referred to simply as yarn Y.

[0038] The mixed filament manufacturing apparatus 1 comprises a fiber guide 11, a spinning and stretching device 3, feeding rollers 12-15, guide rollers 36 and 37, a yarn combination guide 20, a fiber mixing device 18, an interlacing device 16, and a winding device 4. These main components will be described below in the order described above.

[0039] [2. Main Components of a Hybrid Filament Manufacturing Apparatus] (Fiber guide 11) The fiber separator 11, for example, is a comb-shaped fiber separator that separates all the multiple filaments Y spun from the spinning machine 2 into a first group of filaments Y1 and a second group of filaments Y2. The multiple filaments Y spun from the spinning machine 2 are arranged in a horizontal left-right direction. The fiber separator 11 is positioned below the spinning machine 2 in a horizontal left-right direction. All the multiple filaments Y spun from the spinning machine 2 are divided into a first group of filaments Y1 and a second group of filaments Y2 by the fiber separator 11. For example, in this embodiment, there are 16 multiple filaments Y spun from the spinning machine 2, which are divided into 8 first group filaments Y1 and 8 second group filaments Y2, ultimately producing 8 mixed filaments Y3.

[0040] (Spinning and stretching device 3) The spinning stretching device 3 is a device for stretching and heat-setting the first group of yarns Y1, which are separated into fibers by the fiber separator 11, among the multiple yarns Y spun from the spinning machine 2. The spinning stretching device 3 is positioned below and in front of the spinning machine 2 and the fiber separator 11.

[0041] The spinning and stretching device 3 includes a heat preservation box 30 and multiple (five in this embodiment) heating rollers 31-35 housed inside the heat preservation box 30. The heating rollers 31-35 are configured such that their rotation axis is horizontal in the front-back direction and are driven by an electric motor (not shown in the figure).

[0042] Heating rollers 31-35 have built-in heaters (not shown) to heat the yarn Y wound around the circumference of the heating rollers 31-35. All heating rollers 31-35 have approximately the same outer diameter.

[0043] The three first heating rollers 31-33 on the upstream side of the five heating rollers 31-35 in the direction of yarn travel are preheating rollers used to preheat the first group of yarns Y1 before stretching. The surface temperature of the first heating rollers 31-33 is set to a temperature above the glass transition point of yarn Y (e.g., around 80°C). On the other hand, the two second heating rollers 34 and 35 on the downstream side of the five heating rollers 31-35 in the direction of yarn travel are heat-setting rollers used to heat-set the first group of yarns Y1. The surface temperature of the second heating rollers 34 and 35 is set to a temperature higher than the surface temperature of the first heating rollers 31-33 (e.g., around 130-140°C).

[0044] In this embodiment, three heating rollers 31-33 on the upstream side of the yarn travel direction are designated as preheating rollers, and two heating rollers 34 and 35 on the downstream side of the yarn travel direction are designated as heat-setting rollers. However, the number of preheating rollers and heat-setting rollers is not limited to this. For example, the two heating rollers 31 and 32 on the upstream side of the yarn travel direction can be designated as preheating rollers, and the three heating rollers 33-35 on the downstream side of the yarn travel direction can be designated as heat-setting rollers, and the number of preheating rollers and heat-setting rollers can be appropriately varied.

[0045] Of the three first heating rollers 31-33, the upstream first heating roller 31 in the direction of yarn travel is positioned lower than the remaining two first heating rollers 32 and 33. The second first heating roller 32 and the third first heating roller 33 in the direction of yarn travel are arranged adjacent to each other in the left-right direction. The axis of the second first heating roller 32 in the direction of yarn travel is located to the right of the axis of the upstream first heating roller 31 in the direction of yarn travel. The axis of the third first heating roller 33 in the direction of yarn travel is located to the left of the axis of the upstream first heating roller 31 in the direction of yarn travel.

[0046] Two second heating rollers 34 and 35 are arranged adjacent to each other in the left-right direction above the first heating rollers 31 to 33. The second heating roller 34 on the upstream side of the yarn travel direction is arranged adjacent to each other above the second first heating roller 32 in the yarn travel direction. The second heating roller 35 on the downstream side of the yarn travel direction is arranged above the third first heating roller 33 in the yarn travel direction. In addition, the second heating roller 35 on the downstream side of the yarn travel direction is arranged to be offset upwards from the second heating roller 34 on the upstream side of the yarn travel direction. More specifically, the axis of the second heating roller 35 on the downstream side of the yarn travel direction is located above the axis of the second heating roller 34 on the upstream side of the yarn travel direction.

[0047] Furthermore, the rotational speed, i.e., the feeding speed, of the second heating rollers 34 and 35 is set to be faster than that of the first heating rollers 31 to 33. Thus, the first set of yarn Y1 reaches the second heating rollers 34 and 35 via the first heating rollers 31 to 33, and becomes a stretched yarn due to the difference in feeding speed between the first heating roller 33 and the second heating roller 34. Then, the first set of yarn Y1 is heat-set by the second heating rollers 34 and 35 while in a stretched state. Finally, the heat-set first set of yarn Y1 is led out from the outlet 30b (described later) to the outside of the insulation box 30 and fed to the feeding roller 13 (described later).

[0048] Furthermore, in this embodiment, the drawing thread is formed by utilizing the difference in feeding speed between heating roller 33 and heating roller 34 among the five heating rollers 31 to 35, but it is not limited to this. For example, the drawing thread can also be formed by utilizing the difference in feeding speed between heating roller 32 and heating roller 33, and the location of the difference in feeding speed can be appropriately changed to form the drawing thread.

[0049] In this way, the five heating rollers 31-35 can be arranged compactly and densely in the left-right and up-down directions, and the first group of yarns Y1 can be stretched and heat-set.

[0050] The heat preservation box 30 is box-shaped with an opening on the front side and houses multiple heating rollers 31-35, and has a door (not shown) on the front side with an opening that can be opened and closed. An inlet 30a is formed at the lower end of the right wall portion 301 of the box-shaped heat preservation box 30 for guiding the first set of yarn Y1, which will be fed from the feed roller 12 (described later), into the interior of the heat preservation box 30. Furthermore, an outlet 30b is formed at the upper end of the wall portion 301 for guiding the first set of yarn Y1, after stretching and heat setting, out of the heat preservation box 30.

[0051] The aforementioned “inlet 30a” corresponds to the “first opening” of the present invention, and the aforementioned “outlet 30b” corresponds to the “second opening” of the present invention.

[0052] (Feeding roller 12~15) Feed rollers 12-15 are driven to rotate by an electric motor (not shown). Feed rollers 12 and 13 are configured such that their rotation axis is horizontal in the front-to-back direction. Feed rollers 14 and 15 are configured such that their rotation axis is horizontal in the left-to-right direction.

[0053] The feeding roller 12 is used to transport the first group of yarns Y1, after being split by the fiber separator 11, to the spinning and stretching device 3. It is positioned at approximately the same height as the inlet 30a at the lower end of the wall 301 of the insulation box 30, and is located to the right of the inlet 30a. The first group of yarns Y1, after being split by the fiber separator 11, travels toward the feeding roller 12. A yarn channel guide 19 is disposed upstream of the feeding roller 12 in the yarn travel direction. The arrangement direction of the first group of yarns Y1 changes from a horizontal left-right direction to a horizontal front-back direction between the fiber separator 11 and the yarn channel guide 19. That is, the arrangement direction of the first group of yarns Y1 after being split by the fiber separator 11 is a horizontal left-right direction, but between the fiber separator 11 and the yarn channel guide 19, the arrangement direction of the first group of yarns Y1 changes to a horizontal front-back direction. The first set of yarn Y1, fed from the feed roller 12, is introduced into the heat preservation box 30 and guided to the first heating roller 31 in a horizontal or approximately horizontal state.

[0054] Furthermore, as described above, the arrangement direction of the first group of yarns Y1 changes between the fiber separator 11 and the yarn channel guide 19. However, the feed roller 12 is positioned at approximately the same height as the inlet 30a at the lower end of the wall portion 301 on the right side of the insulation box 30, thus maximizing the distance from the fiber separator 11 to the feed roller 12. Therefore, it is possible to ensure a sufficient distance to change the arrangement direction of the first group of yarns Y1 after being separated by the fiber separator 11, thereby reducing potential damage to the first group of yarns Y1.

[0055] The feed roller 13 is positioned at approximately the same height as the outlet 30b formed at the upper end of the wall 301 of the insulation box 30, and is located to the right of both the outlet 30b and the fiber guide 11. In this embodiment, the feed roller 13 is configured such that the upper surface of the second heating roller 35, the most downstream of the plurality of heating rollers 31-35, is horizontal or approximately horizontal with the upper surface of the feed roller 13, but this is not mandatory. That is, the first group of yarns Y1, which has undergone stretching and heat setting, is less likely to be damaged compared to the second group of yarns Y2, which has not undergone stretching and heat setting. Therefore, the yarn path of the first group of yarns Y1 from the second heating roller 35 to the feed roller 13 can be inclined downwards or upwards within the range where the first group of yarns Y1 does not interfere with the insulation box 30 when exiting from the outlet 30b.

[0056] The feed roller 14 is a roller that guides the filament Y conveyed from the feed roller 13 to the feed roller 15, which is located downstream of the feed roller 14 in the direction of filament travel. The filament Y conveyed from the feed roller 13 to the feed roller 14 is a mixed filament Y3 formed by auxiliaryly spinning the first group of filament Y1 and the second group of filament Y2 through the fiber mixing device 18, which will be described later.

[0057] A yarn guide 17 is provided upstream of the yarn travel direction of the yarn feed roller 14, and the arrangement direction of the mixed filament Y3 fed from the yarn feed roller 13 changes from a horizontal front-to-back direction to a horizontal left-to-right direction. That is, the arrangement direction of the mixed filament Y3 fed from the yarn feed roller 13 is a horizontal front-to-back direction, but between the yarn feed roller 13 and the yarn guide 17, the arrangement direction of the mixed filament Y3 changes to a horizontal left-to-right direction.

[0058] The mixed filament Y3 fed from the feed roller 14 is guided to the feed roller 15 downstream of the feed roller 14 in the direction of filament travel. The arrangement direction of the mixed filament Y3 fed from the feed roller 15 changes from the left-right direction to the front-back direction and is fed to the winding device 4.

[0059] (Guide rollers 36, 37) Guide rollers 36 and 37 are driven by an electric motor (not shown) and configured with their rotation axis in a horizontal front-to-back direction. Guide rollers 36 and 37 are arranged vertically relative to each other along the wall 301 of the insulation box 30. Specifically, guide roller 36 is positioned directly above the feed roller 12, near the wall 301 of the insulation box 30. Guide roller 37 is positioned to the right of the outlet 30b, near the wall 301 of the insulation box 30, with its roller surface positioned below the first group of yarn Y1 exiting from the outlet 30b.

[0060] The second group of yarns Y2, after being split by the fiber separator 11, travels towards the guide roller 36. A yarn channel guide 38 is positioned upstream of the guide roller 36 in the yarn travel direction. Between the fiber separator 11 and the guide roller 36, the arrangement direction of the second group of yarns Y2 changes from a horizontal left-right direction to a horizontal front-back direction. That is, the arrangement direction of the first group of yarns Y1, after being split by the fiber separator 11, is horizontal left-right, but between the fiber separator 11 and the yarn channel guide 38, the arrangement direction of the second group of yarns Y2 changes to a horizontal front-back direction. The second group of yarns Y2 conveyed from the guide roller 36 is not introduced into the insulation box 30 but guided towards the guide roller 37. In other words, the second group of yarns Y2 conveyed from the guide roller 36 is not guided via the first heating rollers 31-33 or any of the second heating rollers 34 and 35, but is guided towards the feed roller 13 via the guide roller 37. More specifically, the second set of yarns Y2, conveyed from the guide roller 36, is guided to the feed roller 13 via the guide roller 37, the yarn combination guide 20, and the fiber mixing device 18.

[0061] Furthermore, as described above, the arrangement direction of the second group of yarns Y2 changes between the fiber separator 11 and the yarn channel guide 38. However, since the guide roller 36 is positioned directly above the feed roller 12, the distance from the fiber separator 11 to the yarn channel guide 38 can be maximized. Therefore, it is possible to ensure a sufficient distance to change the arrangement direction of the second group of yarns Y2 after being separated by the fiber separator 11, thereby reducing potential damage to the second group of yarns Y2.

[0062] The guide roller 37 guides the second set of yarn Y2, which is conveyed by the guide roller 36 on the upstream side of the yarn travel direction of the guide roller 37, to the feed roller 13 on the downstream side of the yarn travel direction of the guide roller 37 via the yarn combination guide 20 and the fiber mixing device 18.

[0063] Furthermore, when the guide rollers 36 and 37 are configured as drive rollers driven by an electric motor (not shown in the figure), the tension of the yarn Y can be adjusted according to the rotational speed of the guide rollers 36 and 37, thus making it easy to control the quality of the yarn Y. Therefore, the guide rollers 36 and 37 are preferably configured as drive rollers, but they can also be configured as driven rollers that rotate due to friction of the second group of yarn Y2. However, when the guide rollers 36 and 37 are configured as driven rollers, the second group of yarn Y2 slides on the rollers of the guide rollers 36 and 37, and the rotational speed of the guide rollers 36 and 37 becomes slower than the speed of the second group of yarn Y2. Therefore, especially if the guide roller 37 is configured as a driven roller, when the guide roller 37 contacts the first group of yarn Y1, the first group of yarn Y1 and the second group of yarn Y2 may become entangled due to the speed difference between the first group of yarn Y1 and the guide roller. From this point of view, it is preferable to configure the guide rollers 36 and 37 (especially the guide roller 37) as drive rollers. Furthermore, when the guide rollers 36 and 37 are configured as driven rollers, it is preferable to configure them to eject air from the surface so that they can rotate in a state of reduced friction with the second group of yarns Y2 or in a state of not contacting the second group of yarns Y2.

[0064] Furthermore, the yarn loading operation is simplified as long as the second set of yarns Y2 conveyed from the guide roller 36 is guided to the feed roller 13 without entering the insulation box 30. However, it is not mandatory to guide the second set of yarns Y2 conveyed from the guide roller 36 to the feed roller 13 without entering the insulation box 30. For example, after the second set of yarns Y2 conveyed from the guide roller 36 enters the interior of the insulation box 30, it can be guided to the feed roller 13 from the outlet 30b without passing through any of the first heating rollers 31-33 and the second heating rollers 34 and 35. Even in this case, the second set of yarns Y2 can be conveyed to the feed roller 13 without either stretching or heat setting.

[0065] The aforementioned “guide roller 36” is equivalent to the “first guide roller” of the present invention, and the aforementioned “guide roller 37” is equivalent to the “second guide roller” of the present invention.

[0066] (Thread guide 20) The yarn guide assembly 20 is positioned upstream of the feed roller 13 in the yarn travel direction and downstream of either the second heating roller 35 or the guide roller 37 in the yarn travel direction. The yarn guide assembly 20 is configured, for example, as a comb shape, such as... Figure 2 It is structured as shown in the diagram.

[0067] Figure 2This is a perspective view showing an example of a wire guide assembly 20. The wire guide assembly 20 includes a plurality of guide plates 22 arranged in a row, and guide rails 26 supporting the guide plates 22. A wire receiving space 24 is formed between one of the guide plates 22 and another guide plate 22 adjacent to it. The wire guide assembly 20 is configured such that the arrangement direction of the plurality of guide plates 22 is a horizontal front-to-back direction. That is, the arrangement direction of the guide plates 22 is horizontal and parallel to the rotation axis direction of the feed roller 13.

[0068] In the yarn guide 20, the first group of yarns Y1, which has undergone stretching and heat setting, and the second group of yarns Y2, which has not undergone stretching and heat setting, are combined one by one, overlapping each other, by passing through the same yarn storage space 24. Then, in the combined state of the first group of yarns Y1 and the second group of yarns Y2, they are guided to the feed roller 13 via the blending device 18. That is, a group of yarns, consisting of one yarn from the first group of yarns Y1 and one yarn from the second group of yarns Y2, is guided to the same yarn storage space 24 and then to the feed roller 13 via the blending device 18. In this embodiment, for example, eight groups of yarns formed by combining the first group of yarns Y1 and the second group of yarns Y2 are guided to different yarn storage spaces 24 respectively.

[0069] The tension of the second group of yarns Y2, which has not undergone stretching and heat setting, is unstable, and therefore, yarn wobbling sometimes occurs on the feed roller 13. If yarn wobbling occurs on the feed roller 13, the friction between the second group of yarns Y2 and the surface of the feed roller 13 may damage the second group of yarns Y2. Therefore, in this embodiment, after the first group of yarns Y1, which has undergone stretching and heat setting, and the second group of yarns Y2, which has not undergone stretching and heat setting, are combined to form a yarn set, the first group of yarns Y1 and the second group of yarns Y2 are auxiliaryly plied together by the blending device 18 to form a mixed filament Y3, which is then guided towards the feed roller 13. By doing so, the first group of yarns Y1 suppresses the yarn wobbling of the second group of yarns Y2 on the feed roller 13, thereby reducing potential damage to the second group of yarns Y2.

[0070] Furthermore, since the yarn guide 20 is arranged in a horizontal front-to-back direction with multiple guide plates 22, multiple yarns composed of the first group of yarns Y1 and the second group of yarns Y2 can be guided to different yarn storage spaces 24. In this way, all the multiple second group yarns Y2 are combined with the first group of yarns Y1 and guided to the yarn storage spaces 24. Therefore, on the feed roller 13, yarn swaying can be suppressed for the multiple unstretched and heat-set second group yarns Y2 combined with the first group of yarns Y1. Furthermore, the second group of yarns Y2 contacts the sides and bottom of the guide plates 22, thereby further suppressing yarn swaying of the second group of yarns Y2 on the feed roller 13.

[0071] The aforementioned "guide piece 22" is equivalent to the "guide section" of this invention.

[0072] Furthermore, the yarn guide 20 guides one first group of yarn Y1 and one second group of yarn Y2 within the same yarn storage space 24, without spraying compressed air onto the first group of yarn Y1 and the second group of yarn Y2. Therefore, the yarn formed by combining the first group of yarn Y1 and the second group of yarn Y2 using the yarn guide 20 is merely a combined yarn, and is not strictly a yarn after being combined before being assisted in being combined by the fiber mixing device 18. However, for convenience, this specification will describe the yarn after being assisted in being combined by the yarn guide 20 combining the first group of yarn Y1 and the second group of yarn Y2.

[0073] Furthermore, the yarn guide 20 is preferably configured such that the arrangement direction of the guide plates 22 is horizontal and parallel to the rotation axis direction of the feed roller 13. By doing so, the guide plates 22 restrict the first group of yarns Y1 and the second group of yarns Y2 from the arrangement direction (…). Figure 1 The feed roller 22 moves in the forward and backward direction, thus, compared to the second feed roller 13, it is easier to cause auxiliary yarn mixing of the first group of yarns Y1 and the second group of yarns Y2. However, if the first group of yarns Y1 and the second group of yarns Y2 are guided by the same yarn storage space 24, the arrangement direction of the guide plate 22 does not necessarily have to be parallel to the rotation axis of the feed roller 13.

[0074] (Fiber mixing device 18) return Figure 1The fiber mixing device 18 is positioned upstream of the feed roller 13 in the direction of yarn travel and downstream of either the second heating roller 35 or the guide roller 37 in the direction of yarn travel. Located upstream of the interlacing machine 16 in the direction of yarn travel, the fiber mixing device 18 assists in the yarn mixing of a group of yarns, formed by the yarn combination guide 20 combining the first group of yarns Y1 and the second group of yarns Y2. The fiber mixing device 18 is a yarn mixing auxiliary device that injects compressed air at a pressure lower than that of the interlacing machine 16 into the multiple groups of yarns formed by the combination of the first group of yarns Y1 and the second group of yarns Y2. This low-pressure compressed air mixes the combined first group of yarns Y1 and the second group of yarns Y2, thus assisting in the yarn mixing of the first group of yarns Y1 and the second group of yarns Y2. The degree to which the first group of yarns Y1 and the second group of yarns Y2 are combined by the fiber mixing device 18 is weaker than that of the interlacing device 16, and the fiber mixing device 18 plays an auxiliary role in combining the yarns. In the fiber mixing device 18, the first group of yarns Y1 and the second group of yarns Y2 are combined to generate a mixed filament Y3.

[0075] In this way, after the first group of yarn Y1 and the second group of yarn Y2 are combined by the yarn combination guide 20 to form a yarn set, the first group of yarn Y1 and the second group of yarn Y2 are auxiliaryly combined by the yarn mixing device 18, thereby further suppressing the yarn sway of the second group of yarn Y2 on the yarn feeding roller 13.

[0076] (Interweaver 16) The interlacing device 16 is positioned downstream of the feed roller 13 in the yarn travel direction. In this embodiment, the interlacing device 16 is positioned downstream of the feed roller 14 in the yarn travel direction and upstream of the feed roller 15 in the yarn travel direction, and is closer to the feed roller 14 than the feed roller 15. The interlacing device 16 is a high-pressure compressed air (fluid) with a jet pressure set higher than that of the fiber mixing device 18. This high-pressure compressed air instantaneously forms a knot on the yarn Y, thus joining the first group of yarn Y1 and the second group of yarn Y2 together. As described above, the mixed filament Y3, which has been assisted in joining by the fiber mixing device 18, is firmly joined by the interlacing device 16. The mixed filament Y3, which is formed by firmly joining the first group of yarn Y1 and the second group of yarn Y2 by the interlacing device 16, is conveyed to the take-up device 4 via the feed roller 15.

[0077] The aforementioned "interlacing device 16" is equivalent to the "coupling device" of the present invention.

[0078] (Winding device 4) The winding device 4 has multiple fulcrum guides 41, multiple traverse devices 42, contact rollers 43, two bobbin supports 44, and a turntable 45.

[0079] Multiple pivot wire guides 41 and multiple traverse devices 42 are arranged in a manner corresponding to each other in the front-to-back direction. Figure 1 The diagram shows the overlapping of the two strands in the front-to-back direction. The multiple mixed filaments Y3 fed to the winding device 4 are traversed in the front-to-back direction by the corresponding traversing device 42, with the multiple fulcrum guides 41 as the center.

[0080] The contact roller 43 is configured to apply a predetermined contact pressure by contacting the surfaces of multiple rolls P, thereby adjusting the shape of the rolls P. Furthermore, the multiple rolls P are arranged in a front-to-back direction. Figure 1 The diagram shows the tubes overlapping in the front-to-back direction. The tube support 44 extends in the front-to-back direction and is configured to install multiple tubes B in an arrangement in the front-to-back direction.

[0081] The bobbin support 44 is driven to rotate by an electric motor (not shown). The turntable 45 is configured to support the two bobbin supports 44 in a cantilever state and is also driven to rotate by an electric motor (not shown). In the winding device 4, the positions of the two bobbin supports 44 are switched between the upper winding position and the lower standby position by being driven to rotate by the turntable 45.

[0082] The winding device 4 winds multiple blended filaments Y3 onto multiple bobbins B to form multiple packages P by rotating the bobbin support 44 located at the upper winding position. When multiple packages P are completed, the turntable 45 is rotated to switch the positions of the two bobbin supports 44. Then, multiple blended filaments Y3 are wound onto the multiple bobbins B mounted on the bobbin supports 44 that have been moved to the new winding position.

[0083] In addition, in this embodiment, the winding device 4 has two bobbin supports 44, but it is not limited to this, and the number of bobbin supports 44 can be one.

[0084] (Configuration of guide roller 37, yarn combination guide 20, fiber mixing device 18 and feed roller 13) Next, refer to Figure 1 as well as Figure 3 The configuration of the guide roller 37, the yarn combination guide 20, the fiber mixing device 18, and the feed roller 13 is described. Figure 3 This is a schematic diagram illustrating a preferred configuration example of the guide roller 37, the yarn combination guide 20, the fiber mixing device 18, and the feed roller 13 in the mixed filament manufacturing apparatus 1 according to an embodiment of the present invention.

[0085] Taking into account the potential damage to the second group of yarns Y2, the ideal yarn path for the second group of yarns Y2 from the guide roller 37 to the feed roller 13 is a straight line. That is, the yarn path from the guide roller 37 via the yarn combination guide 20 and the fiber mixing device 18 to the feed roller 13 is preferably a straight line without bending in the middle. The following explanation is based on this premise.

[0086] First, the significance of setting the guide roller 37 will be explained. As mentioned above, by maximizing the distance from the fiber separator 11 to the yarn channel guide 38, it is possible to ensure a sufficient distance to change the arrangement direction of the second group of yarns Y2 after being separated by the fiber separator 11. However, if the second group of yarns Y2 is guided from the guide roller 36 to the yarn assembly guide 20 without setting the guide roller 37, it is difficult to properly reduce the damage to the second group of yarns Y2. In detail, if the yarn assembly guide 20 is configured so that the second group of yarns Y2 does not bend, the first group of yarns Y1 exiting from the outlet 30b may bend at the yarn assembly guide 20. The first group of yarns Y1 is stretched and heat-set, but if the bending of the first group of yarns Y1 becomes excessive, it may cause damage to the first group of yarns, which is undesirable. Furthermore, if the first group of yarns Y1 has a large bend, it may interfere with the insulation box 30 when it is exited from the outlet 30b. On the other hand, if the yarn guide 20 is configured so that the first group of yarns Y1 does not bend at the yarn guide 20, the second group of yarns Y2 may bend. Therefore, in this embodiment, the guide roller 37 is positioned downstream of the guide roller 36 in the yarn travel direction and above the guide roller 36. By doing so, even if the distance required to change the arrangement direction of the second group of yarns Y2 after being split by the fiber guide 11 is ensured, the bend of the first group of yarns Y1 can be kept small, and damage to the second group of yarns Y2 can be reduced.

[0087] Next, the preferred configuration of the guide roller 37, the yarn combination guide 20, the fiber mixing device 18, and the feed roller 13 will be described, assuming that the guide roller 37 is positioned downstream of the guide roller 36 in the yarn travel direction and above the guide roller 36.

[0088] For example, such as Figure 1As shown, the ideal configuration of the yarn guide 20, the blending device 18, the guide roller 37, and the feed roller 13 is as follows: Within the insulation chamber, the yarn path of the first group of yarns Y1 from the downstream side of the second heating roller 35 in the yarn travel direction to the feed roller 13 is straight in the main view, and the yarn path of the second group of yarns Y2 from the guide roller 37 to the feed roller 13 is also straight in the main view. That is, ideally, the yarn guide 20, the blending device 18, the guide roller 37, and the feed roller 13 are configured to satisfy, in the main view, "the upper angle of the two angles between the yarn path of the first group of yarns Y1 from the downstream side of the yarn travel direction of the first group of yarns Y1 to the yarn guide 20 and the yarn path from the yarn guide 20 to the feed roller 13 (described later)." Figure 3 The α shown is 180°, and the lower angle of the two angles between the thread path of the second group of threads Y2 from the guide roller 37 to the thread guide assembly 20 and the thread path from the thread guide assembly 20 to the feed roller 13 (described later). Figure 3 The condition shown is β) = 180°. In Figure 1 In the wire combination guide 20, upstream of the wire travel direction, the wire path of the first group of wires Y1 is the same as that of the second group of wires Y2, and neither the first group of wires Y1 nor the second group of wires Y2 is bent in the wire combination guide 20.

[0089] However, the preferred configuration of the yarn guide 20, the fiber mixing device 18, and the guide roller 37 is not limited to... Figure 1 The configuration shown could also be, for example, Figure 3 The configurations shown in (A) to (D) are as follows.

[0090] Figure 3 (A) indicates that, under the main view, from the second heating roller 35 (refer to) Figure 1 The diagram shows the configuration where the upper angle α of the two angles between the thread path of the first group of threads Y1 from the thread guide 20 and the thread path from the thread guide 20 to the feed roller 13 is less than 180°, and the lower angle β of the two angles between the thread path of the second group of threads Y2 from the guide roller 37 to the thread guide 20 and the thread path from the thread guide 20 to the feed roller 13 is 180°.

[0091] Figure 3 (B) indicates that from the second heating roller 35 (reference) in the main view. Figure 1The diagram illustrates a configuration where the upper angle α of the two angles between the thread path of the first group of threads Y1 from the thread guide 20 and the thread path from the thread guide 20 to the feed roller 13 is less than 180°, and the lower angle β of the two angles between the thread path of the second group of threads Y2 from the guide roller 37 to the thread guide 20 and the thread path from the thread guide 20 to the feed roller 13 is less than 180°. That is, the ideal angle β is 180°, but it is not necessarily limited to 180°. However, considering the potential damage to the second group of threads 2, the angle β is preferably 150° or higher.

[0092] Figure 3 (C) indicates that from the second heating roller 35 (reference) in the main view. Figure 1 The diagram illustrates a configuration where the upper angle α of the two angles between the thread path of the first group of threads Y1 from the thread guide 20 to the thread assembly guide 20 and the thread path from the thread guide 20 to the feed roller 13 is less than 180°, and the lower angle β of the two angles between the thread path of the second group of threads Y2 from the guide roller 37 to the thread assembly guide 20 and the thread path from the thread guide 20 to the feed roller 13 is greater than 180°. That is, the aforementioned angle β can also be greater than 180°. However, considering the potential damage to the second group of threads 2, the aforementioned angle β is preferably 210° or less. Furthermore, it is physically impossible for the path of the second group of silk threads Y2 to be higher than the path of the first group of silk threads Y1. Therefore, when the angle β is greater than 180°, the path of the first group of silk threads Y1 is the same as the path of the second group of silk threads Y2, or the path of the first group of silk threads Y1 is higher than the path of the second group of silk threads Y2.

[0093] Figure 3 (D) indicates that from the second heating roller 35 (reference) in the main view Figure 1 The diagram illustrates a configuration where the upper angle α of the two angles between the thread path of the first group of threads Y1 from the thread guide 20 to the thread assembly guide 20 and the thread path from the thread guide 20 to the feed roller 13 is greater than 180°, and the lower angle β of the two angles between the thread path of the second group of threads Y2 from the guide roller 37 to the thread assembly guide 20 and the thread path from the thread guide 20 to the feed roller 13 is less than 180°. That is, the angle α can also be greater than 180°. However, in this case, considering the potential damage to the second group of threads 2, the angle β is preferably 150° or more.

[0094] The configuration of the yarn guide 20, the fiber mixing device 18, and the guide roller 37 is not limited to... Figure 1 as well as Figure 3 The patterns shown in (A) to (D) are acceptable as long as the above angle α is 180±30° (inclusive) and the above angle β satisfies 180±30° (inclusive).

[0095] Thus, under subjective view, as long as the aforementioned angle β is 180±30° (inclusive of upper and lower limits), damage to the second set of yarns Y2 that may occur during the process of being guided to the feed roller 13 (especially in the yarn assembly guide 20) can be reduced. More specifically, even if sufficient changes are ensured by the fiber separator 11 (refer to...) Figure 1 The distance between the arrangement directions of the second group of yarns Y2 after fiber separation can also suppress the yarn sway of the second group of yarns Y2 on the yarn feed roller 13 and reduce the damage that may be caused to the second group of yarns Y2, especially in the yarn combination guide 20.

[0096] In addition, in the above Figure 3 From any one of (A) to (D), from the second heating roller 35 (refer to) Figure 1 The angle α between the upper side of the two angles formed by the thread path of the first group of threads Y1 from the thread guide 20 to the thread guide assembly 20 and the thread path from the thread guide assembly 20 to the feed roller 13 is less than 180°, but is not limited to this. If the aforementioned angle α is 180±30°, damage to the first group of threads Y1 can be reduced. In addition, the possibility of interference between the first group of threads Y1 exiting from the outlet 30b and the insulation box 30 is also smaller.

[0097] Additionally, multiple rollers 31-35 (see reference) are configured inside the insulation box 30. Figure 1 If the downstream roller in the above-mentioned section is not the second heating roller 35 but another roller, then the above-mentioned "from the second heating roller 35 (refer to) Figure 1 Replace "the thread path from other rollers to the first group of thread Y1 of the thread guide 20" with "the thread path from other rollers to the first group of thread Y1 of the thread guide 20".

[0098] [3. Effects] As explained above, according to this embodiment, the mixed filament manufacturing apparatus 1 includes a filament combination guide 20, which guides a filament composed of a first group of filaments Y1 that has been stretched and heat-set, and a second group of filaments Y2 that has not been stretched and heat-set. The filament combination guide 20 is positioned upstream of either the blending device 18 or the feed roller 13 in the filament travel direction. Furthermore, the filament composed of the first group of filaments Y1 and the second group of filaments Y2 is assisted by the blending device 18 in spinning and guided towards the feed roller 13. Therefore, the swaying of the second group of filaments Y2 on the feed roller 13 can be suppressed by the first group of filaments Y1, reducing potential damage to the second group of filaments Y2.

[0099] Furthermore, the yarn combination guide 20 is configured to have multiple guide plates 22 along the axial direction of the feed roller 13, which combine and guide one yarn from the first group Y1 with one yarn from the second group Y2. Therefore, by setting the direction along the axial direction of the feed roller 13 as the arrangement direction, multiple groups of yarns, composed of the first group Y1 and the second group Y2, are guided towards the blending device 18. Thus, for all of the unstretched and heat-set second group Y2 (all of the second group Y2 in the arrangement direction), yarn wobbling can be suppressed by the stretched and heat-set first group Y1.

[0100] Furthermore, the fiber separator 11 is arranged horizontally in the left-right direction, and the feed roller 13 is arranged axially horizontally and in the front-back direction. The second group of yarns Y2, after being separated by the fiber separator 11, changes its alignment direction and is guided towards the guide roller 36. Therefore, even if the distance required to change the alignment direction of the second group of yarns Y2 after being separated by the fiber separator 11 is ensured, by arranging the guide roller 37 at a position above the guide roller 36 and in an axially parallel manner to the guide roller 36, damage to the second group of yarns Y2 can be appropriately reduced, thereby suppressing yarn breakage of the second group of yarns Y2.

[0101] Furthermore, in the main view, the guide roller 37, the feed roller 13, and the yarn guide assembly 20 are configured such that the upper angle α of the two angles between the yarn path of the first group of yarn Y1 from the second heating roller 35 to the yarn guide assembly 20 and the yarn path from the yarn guide assembly 20 to the feed roller 13 is 180±30° (inclusive of upper and lower limits), and the lower angle of the two angles between the yarn path of the second group of yarn Y2 from the guide roller 37 to the yarn guide assembly 20 and the yarn path from the yarn guide assembly 20 to the feed roller 13 is 180±30° (inclusive of upper and lower limits). By configuring the guide roller 37, feed roller 13, and yarn combination guide 20 in this way, even if a distance sufficient to change the arrangement direction of the second group of yarns Y2 after being separated by the yarn separator 11 is ensured, yarn swaying of the second group of yarns Y2 on the feed roller 13 can be suppressed, and damage that may be caused to the first group of yarns Y1 and the second group of yarns Y2, especially in the yarn combination guide 20, can be reduced. Furthermore, the possibility of interference between the first group of yarns Y1 exiting from the outlet 30b and the insulation box 30 is also reduced.

[0102] Furthermore, the guide roller 37 is configured such that the second group of yarns Y2, which is guided to the feed roller 13, is positioned below the first group of yarns Y1, which is also guided to the feed roller 13. By doing so, the first group of yarns Y1 is positioned above the second group of yarns Y2, which more reliably suppresses the yarn swaying of the second group of yarns Y2 on the feed roller 13.

[0103] Furthermore, guide rollers 36 and 37 are arranged vertically along the wall 301 of the insulation box 30. By doing so, it is possible to suppress the enlargement of the mixed filament manufacturing apparatus 1 in the left-right direction and to reduce damage to the second group of filaments Y2.

[0104] Furthermore, guide rollers 36 and 37 are positioned on the outside of the insulation box 30, so that the second group of yarns Y2, after being split by the fiber separator 11, does not enter the insulation box 30 but is guided towards the feed roller 13. Therefore, the yarn hanging operation of the second group of yarns Y2 can be facilitated.

[0105] [4. Variations] The hybrid filament manufacturing apparatus 1 of this embodiment described above is an example of the best mode for carrying out the present invention, but modifications can be made to the hybrid filament manufacturing apparatus 1 of this embodiment as described in the following first to fifth modifications. Hereinafter, the first to fifth modifications to the hybrid filament manufacturing apparatus 1 of this embodiment will be described. Furthermore, descriptions of components common to the main components of the hybrid filament manufacturing apparatus 1 described above will be omitted; descriptions will primarily focus on components different from the main components of the hybrid filament manufacturing apparatus 1. However, when describing the hybrid filament manufacturing apparatuses 1A to 1E of each modification, the main components of each hybrid filament manufacturing apparatus 1A to 1E will be labeled with the same symbols as the main components of the hybrid filament manufacturing apparatus 1.

[0106] [4-1. First Variation] Figure 4 This is a front view showing an example of the first modified hybrid filament manufacturing apparatus 1A. The first modified hybrid filament manufacturing apparatus 1A is an example of the preferred mode, alongside the hybrid filament manufacturing apparatus 1 of this embodiment. The difference between the first modified hybrid filament manufacturing apparatus 1A and the hybrid filament manufacturing apparatus 1 of this embodiment lies in the arrangement position of the fiber mixing device 18. Specifically, in the first modified hybrid filament manufacturing apparatus 1A, the fiber mixing device 18 is arranged downstream of the feed roller 13 in the filament travel direction. More specifically, it is arranged downstream of the feed roller 13 in the filament travel direction and upstream of the feed roller 14 in the filament travel direction, and is positioned closer to the feed roller 13 than the feed roller 14.

[0107] Thus, when the blending device 18 is positioned downstream of the filament travel direction of the feed roller 13, a set of filaments, formed by the filament combination guide 20 combining the first set of filaments Y1 and the second set of filaments Y2, is guided toward the feed roller 13 before being assisted in spinning. Even in this case, since the first set of filaments Y1 and the second set of filaments Y2 are guided toward the feed roller 13 in a combined state, the first set of filaments Y1, which has undergone stretching and heat setting, suppresses the filament wobbling of the second set of filaments Y2, which has not undergone stretching and heat setting, on the feed roller 13. Therefore, even in the blended filament manufacturing apparatus 1A, similar to the blended filament manufacturing apparatus 1 of this embodiment, the first set of filaments Y1 suppresses the filament wobbling of the second set of filaments Y2 on the feed roller 13, thereby reducing potential damage to the second set of filaments Y2.

[0108] In particular, since the roller surface of the guide roller 37 is located below the first group of yarns Y1 exiting from the outlet 30b, it is assumed that the second group of yarns Y2 fed from the guide roller 37 to the yarn assembly guide 20 is located below the first group of yarns Y1 exiting from the insulation box 30 and fed to the yarn assembly guide 20. Therefore, in the yarn storage space 24 and the feed roller 13, the second group of yarns Y2 is pressed down from above by the first group of yarns Y1, which can be considered to further suppress the yarn swaying of the second group of yarns Y2 on the feed roller 13.

[0109] Furthermore, in representing the first variation example Figure 4 In the diagram, the configuration of the guide roller 37, the yarn guide assembly 20, and the feed roller 13 is illustrated. Figure 3 The configuration shown in (B) is the same as the configuration pattern shown (the position of the fiber mixing device 18 is different). However, the configuration pattern of the guide roller 37, the yarn combination guide 20, and the feed roller 13 is not limited to this, and can also be... Figure 1 The configuration mode shown Figure 3 The configuration mode shown in (A) Figure 3 The configuration mode shown in (C) and Figure 3 Any of the configuration patterns shown in (D). By forming the configuration pattern of the guide roller 37, the yarn combination guide 20, and the feed roller 13 in this way, similar to the mixed filament manufacturing apparatus 1 of this embodiment, even if the distance is sufficient to change the arrangement direction of the second group of yarns Y2 after being separated by the yarn separation guide 11, the yarn swaying of the second group of yarns Y2 on the feed roller 13 can be suppressed, and damage that may be caused to the first group of yarns Y1 and the second group of yarns Y2, especially in the yarn combination guide 20, can be reduced. In addition, the possibility of the first group of yarns Y1 being led out from the outlet 30b interfering with the heat preservation box 30 is also smaller.

[0110] [4-2. Second variation] Figure 5 This is a front view showing an example of the hybrid filament manufacturing apparatus 1B of the second modification. The hybrid filament manufacturing apparatus 1B of the second modification differs from the hybrid filament manufacturing apparatus 1 of this embodiment in that it does not have a guide roller 37 (the roller that guides the second group of filaments Y2 after fiber separation to the feed roller 13 is one of the guide rollers 36). Specifically, in the hybrid filament manufacturing apparatus 1B, the second group of filaments Y2 separated by the fiber separator 11 is guided from the guide roller 36 to the feed roller 13 via the filament combination guide 20 and the fiber mixing device 18. In addition, the second group of filaments Y2 does not pass through any of the first heating rollers 31-33 and the second heating rollers 34 and 35.

[0111] Thus, in the absence of the guide roller 37 in the mixed filament manufacturing apparatus 1B, the filament path from the guide roller 36 to the feed roller 13 is not straight, and the second group of filaments Y2 may be bent in the filament combination guide 20. Furthermore, the distance from the guide roller 36 to the feed roller 13 is larger than the distance from the guide roller 37 to the feed roller 13. In this respect, the mixed filament manufacturing apparatus 1B of the second modification differs from the mixed filament manufacturing apparatus 1 of this embodiment and the mixed filament manufacturing apparatus 1A of the first modification. However, even in the mixed filament manufacturing apparatus 1B of the second modification, after the first group of filaments Y1, which undergoes stretching and heat setting, is combined with the second group of filaments Y2, which has neither undergone stretching nor heat setting, to form a filament group, the first group of filaments Y1 and the second group of filaments Y2 are auxiliaryly fused together to form a mixed filament Y3, which is then guided towards the feed roller 13. Therefore, the mixed filament manufacturing apparatus 1B is the same as the mixed filament manufacturing apparatus 1 of this embodiment, and can suppress the filament oscillation of the second group of filaments Y2 on the feed roller 13 by the first group of filaments Y1, and can reduce the damage that may be caused to the second group of filaments Y2.

[0112] [4-3. Third variation] Figure 6 This is a front view of an example of the hybrid filament manufacturing apparatus 1C of the third modification. The hybrid filament manufacturing apparatus 1C of the third modification differs from the hybrid filament manufacturing apparatus 1 of this embodiment in that the fiber mixing device 18 is positioned downstream of the feed roller 13 in the filament travel direction, and it lacks the guide roller 37 (the roller that guides the second group of filaments Y2 after fiber separation to the feed roller 13 is one of the guide rollers 36). That is, the hybrid filament manufacturing apparatus 1C is the same as the hybrid filament manufacturing apparatus 1A of the first modification described above in that the fiber mixing device 18 is positioned downstream of the feed roller 13 in the filament travel direction, and the same as the hybrid filament manufacturing apparatus 1B of the second modification described above in that it lacks the guide roller 37.

[0113] In the third variation of the mixed filament manufacturing apparatus 1C, similar to the second variation of the mixed filament manufacturing apparatus 1B, the filament path from the guide roller 36 to the feed roller 13 is not straight, and the second group of filaments Y2 may be bent in the filament combination guide 20. Furthermore, the distance from the guide roller 36 to the feed roller 13 is larger than the distance from the guide roller 37 to the feed roller 13. In this respect, the third variation of the mixed filament manufacturing apparatus 1C differs from the mixed filament manufacturing apparatus 1 of this embodiment and the mixed filament manufacturing apparatus 1A of the first variation. Moreover, before the first group of filaments Y1 and the second group of filaments Y2 are auxiliaryly mixed, a group of filaments formed by combining the first group of filaments Y1 and the second group of filaments Y2 is guided towards the feed roller 13. In this respect, the third variation of the mixed filament manufacturing apparatus 1C differs from the mixed filament manufacturing apparatus 1 of this embodiment and the mixed filament manufacturing apparatus 1B of the second variation. However, even in the third modified example of the mixed filament manufacturing apparatus 1C, the first set of filaments Y1 and the second set of filaments Y2 can be guided to the feed roller 13 as a set of filaments. Therefore, the mixed filament manufacturing apparatus 1C, like the mixed filament manufacturing apparatus 1 of this embodiment, can suppress the filament oscillation of the second set of filaments Y2 on the feed roller 13 by means of the first set of filaments Y1, and can reduce the damage that may be caused to the second set of filaments Y2.

[0114] [4-4. Fourth Variation] Figure 7 This is a front view showing an example of the hybrid filament manufacturing apparatus 1D of the fourth modification. The hybrid filament manufacturing apparatus 1D of the fourth modification differs from the hybrid filament manufacturing apparatus 1 of this embodiment in that it does not have a guide roller 37 (the roller that guides the second group of filaments Y2 after fiber separation to the feed roller 13 is one of the guide rollers 36), and the guide roller 36 is arranged at any position within a range that does not interfere with the first group of filaments Y1 exiting from the outlet 30b. Furthermore, in Figure 7 In this case, the guide roller 36 is positioned on the right side of the outlet 30b near the wall 301 of the insulation box 30, but is not limited to this.

[0115] In the mixed filament manufacturing apparatus 1D, the second group of filaments Y2, after being split by the fiber splitting guide 11, is guided from the guide roller 36 located on the right side of the outlet 30b of the insulation box 30 and close to the wall 301 of the insulation box 30, to the feed roller 13 via the filament combination guide 20 and the fiber mixing device 18. In this case, the filament channel guide 38 is arranged upstream of the guide roller 36 in the filament travel direction, and the second group of filaments Y2 is arranged between the fiber splitting guide 11 and the filament channel guide 38, with the arrangement direction changing from a horizontal left-right direction to a horizontal front-back direction. In addition, the second group of filaments Y2 does not pass through any of the first heating rollers 31-33 and the second heating rollers 34 and 35.

[0116] Even in this fourth variation of the mixed filament manufacturing apparatus 1D, after forming a set of filaments consisting of a first set of filaments Y1 that will be stretched and heat-set, and a second set of filaments Y2 that has neither been stretched nor heat-set, the combined first set of filaments Y1 and the second set of filaments Y2 are auxiliaryly fused together to form a mixed filament Y3, which is then guided toward the feed roller 13. Therefore, like the mixed filament manufacturing apparatus 1 of this embodiment, the mixed filament manufacturing apparatus 1D can suppress the filament oscillation of the second set of filaments Y2 on the feed roller 13 by using the first set of filaments Y1, thus reducing potential damage to the second set of filaments Y2.

[0117] Furthermore, in representing the fourth variation... Figure 7 As described above, the guide roller 36 can be positioned at any location without interfering with the first group of yarns Y1 exiting from the outlet 30b. However, the guide roller 36, the yarn combination guide 20, and the feed roller 13 can also be positioned in a manner consistent with... Figure 1 , Figure 3 The guide roller 37, the yarn guide assembly 20, and the feed roller 13 are positioned identically as shown in (A)~(D). By doing so, in the main view, the lower angle of the two angles between the yarn path of the second group of yarns Y2 from the guide roller 36 to the yarn guide assembly 20 and the yarn path from the yarn guide assembly 20 to the feed roller 13 can be set to 180±30°. That is, although it is not possible to ensure that the distance is sufficient to change the arrangement direction of the second group of yarns Y2 after being separated by the yarn guide assembly 11, the yarn swaying of the second group of yarns Y2 on the feed roller 13 can be suppressed, and damage that may be caused to the first group of yarns Y1 and the second group of yarns Y2, especially in the yarn guide assembly 20, can be reduced. In addition, the possibility of interference between the first group of yarns Y1 exiting from the outlet 30b and the insulation box 30 is also smaller.

[0118] [4-5. Fifth variation] Figure 8This is a front view of an example of the hybrid filament manufacturing apparatus 1E of the fifth modification. The hybrid filament manufacturing apparatus 1E of the fifth modification is the same as the hybrid filament manufacturing apparatus 1D of the fourth modification, but it does not include the guide roller 37, and the guide roller 36 is arranged at any position within a range that does not interfere with the first group of yarns Y1 exiting from the outlet 30b. Furthermore, the hybrid filament manufacturing apparatus 1E of the fifth modification differs from the hybrid filament manufacturing apparatus 1 of this embodiment in this respect. That is, the hybrid filament manufacturing apparatus 1E is the same as the hybrid filament manufacturing apparatus 1D of the fourth modification in that the guide roller 36 is arranged at any position within a range that does not interfere with the first group of yarns Y1 exiting from the outlet 30b, and it is the same as the hybrid filament manufacturing apparatus 1A of the first modification and the hybrid filament manufacturing apparatus 1C of the third modification in that the fiber mixing device 18 is arranged downstream of the yarn travel direction of the feed roller 13.

[0119] That is, in the mixed filament manufacturing apparatus 1E, the second group of filaments Y2, after being split by the fiber splitting guide 11, is guided from the guide roller 36, which is located on the right side of the outlet 30b of the insulation box 30 and close to the wall 301 of the insulation box 30, to the feed roller 13 via the filament combination guide 20. In this case, similar to the mixed filament manufacturing apparatus 1D in the fourth variation, the filament channel guide 38 is arranged upstream of the guide roller 36 in the filament travel direction, and the arrangement direction of the second group of filaments Y2 between the fiber splitting guide 11 and the filament channel guide 38 changes from a horizontal left-right direction to a horizontal front-back direction. In addition, the second group of filaments Y2 does not pass through any of the first heating rollers 31-33 and the second heating rollers 34 and 35. Furthermore, in the mixed filament manufacturing apparatus 1E, before the first group of filaments Y1 and the second group of filaments Y2 are auxiliaryly mixed, a set of filaments consisting of the first group of filaments Y1 and the second group of filaments Y2 is guided toward the feed roller 13. In this respect, the mixed filament manufacturing apparatus 1E of the fifth modification differs from the mixed filament manufacturing apparatus 1 of this embodiment, the mixed filament manufacturing apparatus 1B of the second modification, and the mixed filament manufacturing apparatus 1D of the fourth modification. However, even in the mixed filament manufacturing apparatus 1E of the fifth modification, a set of filaments consisting of the first group of filaments Y1 and the second group of filaments Y2 is guided toward the feed roller 13. Therefore, the mixed filament manufacturing apparatus 1E is the same as the mixed filament manufacturing apparatus 1 of this embodiment, and can suppress the filament oscillation of the second group of filaments Y2 on the feed roller 13 by means of the first group of filaments Y1, thereby reducing possible damage to the second group of filaments Y2.

[0120] Furthermore, in representing the fifth variation... Figure 8 Similar to the fourth variation, the guide roller 36, the yarn guide assembly 20, and the feed roller 13 can also be arranged in conjunction with... Figure 1 , Figure 3The guide roller 37, the yarn guide assembly 20, and the feed roller 13 are positioned identically as shown in (A)~(D). By doing so, in the main view, the lower angle of the two angles between the yarn path of the second group of yarns Y2 from the guide roller 36 to the yarn guide assembly 20 and the yarn path from the yarn guide assembly 20 to the feed roller 13 can be set to 180±30°. That is, although it is not possible to ensure that the distance is sufficient to change the arrangement direction of the second group of yarns Y2 after being separated by the yarn guide assembly 11, the yarn swaying of the second group of yarns Y2 on the feed roller 13 can be suppressed, and damage that may be caused to the first group of yarns Y1 and the second group of yarns Y2, especially in the yarn guide assembly 20, can be reduced. In addition, the possibility of interference between the first group of yarns Y1 exiting from the outlet 30b and the insulation box 30 is also smaller.

[0121] Symbol explanation: 1: Blended filament manufacturing device; 2: Spinning machine; 11: Fiber guide; 12: First feed roller; 13: Second feed roller; 16: Interlacing device; 18: Blending device; 20: Fiber combination guide; 30: Insulation box; 30a: Inlet; 30b: Outlet; 31~33: First heating roller; 34, 35: Second heating roller; 36: First guide roller; 37: Second guide roller; 301: Wall; Y: Fiber; Y1: First group of filaments; Y2: Second group of filaments; Y3: Blended filament.

Claims

1. A mixed filament manufacturing apparatus, comprising, after treating a first group of filaments and a second group of filaments from a plurality of filaments spun from a spinning machine differently, blending the first group of filaments and the second group of filaments to manufacture mixed filaments, characterized in that, have: The fiber separator divides the multiple fibers into the first group of fibers and the second group of fibers. The first heating roller heats the first group of filaments after they have been separated by the fiber separator. The second heating roller is positioned downstream of the first heating roller in the direction of yarn travel, and stretches and heat-sets the first group of yarns between the first heating roller and the first heating roller. The insulated box houses the first heating roller and the second heating roller, and has a first opening formed in the lower part of the wall and a second opening formed in the upper part of the wall; The first feeding roller causes the first group of yarns, after being separated by the fiber separator, to enter the heat preservation box from the first opening. The second feed roller guides the first set of yarns that enter the insulation box from the first opening, pass through the first heating roller and the second heating roller, and are then led out of the insulation box from the second opening. The guide roller guides the second group of yarns, after being split by the fiber splitter, to the second feed roller without passing through either the first heating roller or the second heating roller. The yarn-coupling device is located downstream of the second yarn-feeding roller in the yarn-carrying direction, so that the first group of yarns and the second group of yarns are co-coupled. A fiber mixing device is disposed upstream of the yarn traveling direction of the above-mentioned yarn mixing device, so that the first group of yarns and the second group of yarns are auxiliaryly mixed together; as well as The yarn guide is positioned downstream of either the second heating roller or the guide roller in the yarn travel direction and upstream of either the blending device or the second feed roller in the yarn travel direction. Along the axial direction of the second feed roller, it has multiple yarn storage spaces for the yarn formed by combining the first group of yarns (which has been stretched and heat-set) with the second group of yarns (which has not been stretched and heat-set). The thread guide is configured to allow one of the first group of threads and one of the second group of threads to pass through the same thread storage space as a group of threads.

2. The mixed filament manufacturing apparatus according to claim 1, characterized in that, The above-mentioned guide rollers are configured as follows: The lower angle of the two angles between the thread path of the second set of threads from the guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180°±30°.

3. The mixed filament manufacturing apparatus according to claim 1, characterized in that, The fiber mixing device is configured to be positioned upstream of the second feed roller in the direction of yarn travel, and to auxiliaryly combine the first group of yarns and the second group of yarns, and guide the auxiliaryly combined yarns toward the second feed roller.

4. The mixed filament manufacturing apparatus according to claim 2, characterized in that, The fiber mixing device is configured to be positioned upstream of the second feed roller in the direction of yarn travel, and to auxiliaryly combine the first group of yarns and the second group of yarns, and guide the auxiliaryly combined yarns toward the second feed roller.

5. The mixed filament manufacturing apparatus according to claim 1, characterized in that, The multiple filaments spun from the aforementioned spinning machine are arranged in a horizontal direction, and the aforementioned fiber guide is configured in the aforementioned horizontal direction. The second feed roller described above is configured to be axially horizontal and orthogonal to one of the aforementioned directions. The above-mentioned guide rollers have: The first guide roller, configured axially parallel to the second feed roller, guides the second group of yarns, after being split by the fiber separator, to change their orientation; and The second guide roller is located downstream of the first guide roller in the direction of yarn travel and above the first guide roller, and is configured to be axially parallel to the first guide roller.

6. The mixed filament manufacturing apparatus according to claim 2, characterized in that, The multiple filaments spun from the aforementioned spinning machine are arranged in a horizontal direction, and the aforementioned fiber guide is configured in the aforementioned horizontal direction. The second feed roller described above is configured to be axially horizontal and orthogonal to one of the aforementioned directions. The above-mentioned guide rollers have: The first guide roller, configured axially parallel to the second feed roller, guides the second group of yarns, after being split by the fiber separator, to change their orientation; and The second guide roller is located downstream of the first guide roller in the direction of yarn travel and above the first guide roller, and is configured to be axially parallel to the first guide roller.

7. The mixed filament manufacturing apparatus according to claim 3, characterized in that, The multiple filaments spun from the aforementioned spinning machine are arranged in a horizontal direction, and the aforementioned fiber guide is configured in the aforementioned horizontal direction. The second feed roller described above is configured to be axially horizontal and orthogonal to one of the aforementioned directions. The above-mentioned guide rollers have: The first guide roller, configured axially parallel to the second feed roller, guides the second group of yarns, after being split by the fiber separator, to change their orientation; and The second guide roller is located downstream of the first guide roller in the direction of yarn travel and above the first guide roller, and is configured to be axially parallel to the first guide roller.

8. The mixed filament manufacturing apparatus according to claim 4, characterized in that, The multiple filaments spun from the aforementioned spinning machine are arranged in a horizontal direction, and the aforementioned fiber guide is configured in the aforementioned horizontal direction. The second feed roller described above is configured to be axially horizontal and orthogonal to one of the aforementioned directions. The above-mentioned guide rollers have: The first guide roller, configured axially parallel to the second feed roller, guides the second group of yarns, after being split by the fiber separator, to change their orientation; and The second guide roller is located downstream of the first guide roller in the direction of yarn travel and above the first guide roller, and is configured to be axially parallel to the first guide roller.

9. The mixed filament manufacturing apparatus according to claim 5, characterized in that, The aforementioned second guide roller, the aforementioned second feed roller, and the aforementioned yarn guide assembly are configured such that, Within the aforementioned insulation box, the upper angle of the two angles between the yarn path of the first group of yarns from the downstream roller in the yarn travel direction of the first group of yarns to the yarn guide assembly and the yarn path from the yarn guide assembly to the second feed roller is 180°±30°, including both upper and lower limits. The lower angle of the two angles between the thread path of the second group of threads from the second guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180°±30°, including the upper and lower limits.

10. The mixed filament manufacturing apparatus according to claim 6, characterized in that, The aforementioned second guide roller, the aforementioned second feed roller, and the aforementioned yarn guide assembly are configured such that, Within the aforementioned insulation box, the upper angle of the two angles between the yarn path of the first group of yarns from the downstream roller in the yarn travel direction of the first group of yarns to the yarn guide assembly and the yarn path from the yarn guide assembly to the second feed roller is 180°±30°, including both upper and lower limits. The lower angle of the two angles between the thread path of the second group of threads from the second guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180°±30°, including the upper and lower limits.

11. The mixed filament manufacturing apparatus according to claim 7, characterized in that, The aforementioned second guide roller, the aforementioned second feed roller, and the aforementioned yarn guide assembly are configured such that, Within the aforementioned insulation box, the upper angle of the two angles between the yarn path of the first group of yarns from the downstream roller in the yarn travel direction of the first group of yarns to the yarn guide assembly and the yarn path from the yarn guide assembly to the second feed roller is 180°±30°, including both upper and lower limits. The lower angle of the two angles between the thread path of the second group of threads from the second guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180°±30°, including the upper and lower limits.

12. The mixed filament manufacturing apparatus according to claim 8, characterized in that, The aforementioned second guide roller, the aforementioned second feed roller, and the aforementioned yarn guide assembly are configured such that, Within the aforementioned insulation box, the upper angle of the two angles between the yarn path of the first group of yarns from the downstream roller in the yarn travel direction of the first group of yarns to the yarn guide assembly and the yarn path from the yarn guide assembly to the second feed roller is 180°±30°, including both upper and lower limits. The lower angle of the two angles between the thread path of the second group of threads from the second guide roller to the thread assembly guide and the thread path from the thread assembly guide to the second feed roller is 180°±30°, including the upper and lower limits.

13. The apparatus for manufacturing mixed filaments according to any one of claims 5 to 12, characterized in that, The second guide roller is configured such that the second group of yarns guided to the second feed roller is positioned below the first group of yarns guided to the second feed roller.

14. The apparatus for manufacturing mixed filaments according to any one of claims 5 to 12, characterized in that, The first guide roller and the second guide roller are arranged vertically along the wall of the insulation box.

15. The mixed filament manufacturing apparatus according to claim 13, characterized in that, The first guide roller and the second guide roller are arranged vertically along the wall of the insulation box.

16. The apparatus for manufacturing mixed filaments according to any one of claims 5 to 12, characterized in that, The first guide roller and the second guide roller are arranged on the outside of the insulation box. The second group of yarns, after being separated by the fiber separator, does not enter the insulation box but is guided to the second feed roller.

17. The mixed filament manufacturing apparatus according to claim 13, characterized in that, The first guide roller and the second guide roller are arranged on the outside of the insulation box. The second group of yarns, after being separated by the fiber separator, does not enter the insulation box but is guided to the second feed roller.

18. The mixed filament manufacturing apparatus according to claim 14, characterized in that, The first guide roller and the second guide roller are arranged on the outside of the insulation box. The second group of yarns, after being separated by the fiber separator, does not enter the insulation box but is guided to the second feed roller.

19. The mixed filament manufacturing apparatus according to claim 15, characterized in that, The first guide roller and the second guide roller are arranged on the outside of the insulation box. The second group of yarns, after being separated by the fiber separator, does not enter the insulation box but is guided to the second feed roller.

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