False twisting machine

Abstract

To secure excellent yarn quality while suppressing impairment of production efficiency and uniformity even when a thick yarn is false-twisted.SOLUTION: A false-twisting machine 1 includes: a false-twister 15 which twists a first yarn Ya and a second yarn Yb; and a cooling device 14 which cools the first yarn Ya and the second yarn Yb. The false-twister 15 has a disc 41, a first belt unit 42a, and a second belt unit 42b. The disc 41 has a first contact surface 41a and a second contact surface 41b. The first yarn Ya is twisted by the first contact surface 41a and a first endless belt 46a of the first belt unit 42a. The second yarn Yb is twisted by the second contact surface 41b and a second endless belt 46b of the second belt unit 42b. The cooling device 14 has a cooling unit 31 in which a first cooling space Sa and a second cooling space Sb are formed and an intake duct 32 for supplying cooling air to the first cooling space Sa and the second cooling space Sb.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a false twisting machine for false twisting yarns.

Background Art

[0002] Patent Document 1 discloses a false twisting machine for false twisting a plurality of yarns made of synthetic fibers. The false twisting machine includes a false twisting device that imparts twists to the plurality of yarns respectively, a cooling device disposed upstream of the false twisting device in the yarn running direction of the plurality of yarns, and a heating device disposed upstream of the cooling device in the yarn running direction. The plurality of yarns in running are heated by the heating device and thermally fixed in a twisted state by the plurality of false twisting devices, and then cooled by the cooling device. Thereby, the crimp of the yarn is fixed, and a bulky yarn is produced.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, there has been a demand for providing a false twisting machine capable of false twisting thicker yarns than before. On the other hand, at the same time, it is necessary to consider the number of yarns that can be false twisted simultaneously (hereinafter, production efficiency), and suppression of an increase in yarn quality variation between a plurality of yarns (hereinafter, homogeneity). [[ID=**37]]

[0005] An object of the present invention is to ensure good yarn quality while suppressing impairment of production efficiency and homogeneity even when false twisting a thick yarn.

Means for Solving the Problems

[0006] The false twisting machine of the first invention is configured to simultaneously false twist a running first yarn and a second yarn, and comprises: a false twisting device configured to impart twist to the first yarn and the second yarn; and a cooling device arranged upstream of the false twisting device in the yarn running direction of the first yarn and the second yarn, and configured to cool the first yarn and the second yarn, wherein the false twisting device comprises: a disc configured to rotate with a predetermined direction as the axis of rotation; a first belt unit arranged on one side of the disc in the predetermined direction; and a second belt unit arranged on the other side of the disc in the predetermined direction, wherein the disc comprises: a first contact surface arranged at one end in the predetermined direction; and a second contact surface arranged at the other end in the predetermined direction. The first belt unit has a first belt member that is movable while in contact with the first thread, and is configured to impart twist to the first thread by sandwiching it between the first contact surface and the first belt member; the second belt unit has a second belt member that is movable while in contact with the second thread, and is configured to impart twist to the second thread by sandwiching it between the second contact surface and the second belt member; the cooling device is characterized by having a cooling unit having a first cooling space for cooling the first thread and a second cooling space arranged alongside the first cooling space for cooling the second thread, and an intake duct for supplying cooling air to the first cooling space and the second cooling space, having an intake space connected to the first cooling space and the second cooling space.

[0007] In the false twisting device of the false twisting machine of the present invention, the first yarn is sandwiched between the first belt member and the first contact surface, and the second yarn is sandwiched between the second belt member and the second contact surface. This allows for firm twisting of the first and second yarns. Furthermore, since the first and second contact surfaces are formed on the same disc, the distance between the first and second yarns in the false twisting device can be reduced. Therefore, twisting can be applied to many yarns in a small space. In addition, in this false twisting device, the position where the first yarn is false twisted and the position where the second yarn is false twisted can be brought close together. Therefore, it is possible to suppress large differences between the yarn paths of the first yarn and the yarn paths of the second yarn (and consequently, variations in yarn quality between the first and second yarns).

[0008] Furthermore, the cooling device provided in the false twisting machine of the present invention can thoroughly cool the first and second yarns with cooling air. Also, since the first and second cooling spaces are formed within the same cooling unit, the distance between the first and second yarns in the cooling device can be reduced. Therefore, a large number of yarns can be cooled in a small space. Moreover, as described above, since the distance between the first and second yarns can be reduced, it is possible to suppress the significant difference between the yarn paths of the first and second yarns (and the resulting variation in yarn quality as described above).

[0009] As described above, even when false-twisting thick yarn, it is possible to ensure good yarn quality while suppressing any loss of production efficiency and uniformity.

[0010] The false twisting machine of the second invention is characterized in that, in the first invention, the first cooling space and the second cooling space are arranged side by side in the predetermined direction.

[0011] In this invention, when the first and second yarns are sent from the cooling device to the false twisting device, the first and second yarns can be kept aligned in a predetermined direction. This further suppresses the deviation of the yarn paths of the first and second yarns from each other, compared to, for example, when the first and second cooling spaces are arranged in directions different from the predetermined direction. Therefore, variations in yarn quality between the first and second yarns can be effectively reduced.

[0012] The false twisting machine of the third invention is characterized in that, in the second invention, when WC1 is the distance in a predetermined direction between the upstream end of the first cooling space in the yarn running direction and the upstream end of the second cooling space in the yarn running direction, and WC2 is the distance in a predetermined direction between the downstream end of the first cooling space in the yarn running direction and the downstream end of the second cooling space in the yarn running direction, WC2 ≤ WC1.

[0013] In this invention, because WC2 is small, bending of the first and second yarns can be suppressed when they are sent from the cooling device to the false twisting device. Therefore, a deterioration in yarn quality can be suppressed.

[0014] The false twisting machine of the fourth invention is characterized in that, in the second or third invention, it comprises an upstream guide member disposed upstream of the cooling device in the yarn running direction, and a downstream guide member disposed downstream of the cooling device in the yarn running direction, wherein the upstream guide member is configured to define the distance between the first yarn and the second yarn in the predetermined direction as W1, and the downstream guide member is configured to define the distance between the first yarn and the second yarn in the predetermined direction as W2, and when the distance in the predetermined direction between the upstream end of the first cooling space and the upstream end of the second cooling space in the yarn running direction is WC1, and the distance in the predetermined direction between the downstream end of the first cooling space and the downstream end of the second cooling space in the yarn running direction is WC2, then W2 ≤ WC2 ≤ WC1 ≤ W1, or W1 ≤ WC1 ≤ WC2 ≤ W2.

[0015] In this invention, when threading the cooling unit, both the first and second threads can be kept in a substantially straight line while the threading process is performed. In other words, there is almost no need to bend the first and second threads when threading the cooling unit. Therefore, it becomes easy to thread the first and second threads onto the cooling unit simultaneously.

[0016] The false twisting machine of the fifth invention is characterized in that, in any of the second to fourth inventions, the cooling unit has a partition member that separates the first cooling space and the second cooling space in a predetermined direction.

[0017] The first cooling space and the second cooling space do not necessarily have to be separated, but in this case, there is a risk that the first thread and the second thread may become entangled with each other for some reason. In the present invention, the first cooling space and the second cooling space are separated by a partition member, so that such a problem can be reliably avoided.

[0018] The false twisting machine of the sixth invention is characterized in that, in the fifth invention, the intake space extends in the predetermined direction, and the first cooling space and the second cooling space are each connected to the intake space.

[0019] In this invention, the first cooling space and the second cooling space are each connected to an intake space extending in a predetermined direction (i.e., connected in parallel). Therefore, cooling air can be supplied to the first cooling space and the second cooling space substantially uniformly with a simple structure.

[0020] The false twisting machine of the seventh invention is characterized in that, in the fifth or sixth invention, the partition member has a first partition section having a first partition surface arranged on one side in the predetermined direction to form the first cooling space, and a second partition section having a second partition surface arranged on the other side in the predetermined direction to form the second cooling space, and the cooling unit has a first wall member having a first wall surface for forming the first cooling space, arranged on one side of the first partition surface in the predetermined direction, and a second wall member having a second wall surface for forming the second cooling space, arranged on the other side of the second partition surface in the predetermined direction.

[0021] In this invention, a first cooling space is formed by the first partition surface of the partition member and the first wall surface of the first wall member. Furthermore, a second cooling space is formed by the second partition surface of the partition member and the second wall surface of the second wall member. Therefore, the first and second cooling spaces can be formed with a simple structure.

[0022] The false twisting machine of the eighth invention is characterized in that, in the seventh invention, the first partition surface is arranged to face the first wall surface in the predetermined direction, and the second partition surface is arranged to face the second wall surface in the predetermined direction.

[0023] For example, when the first yarn is twisted by a false twisting device and comes into contact with the wall surface forming the first cooling space, the first yarn may roll along the wall surface and fall out of the first cooling space. This possibility is especially high if the entrance for introducing the first yarn into the first cooling space is wide. The same applies to the second cooling space. In the present invention, the first partition surface is arranged to face the first wall surface in a predetermined direction (i.e., the two surfaces are substantially parallel to each other). This makes it possible to narrow the entrance to the first cooling space. The same applies to the second cooling space. Therefore, it is possible to suppress the first yarn from falling out of the first cooling space and the second yarn from falling out of the second cooling space.

[0024] The false twisting machine of the ninth invention is characterized in that, in the seventh or eighth invention, the cooling unit is disposed between the first cut surface and the first wall surface in the predetermined direction, and includes a first yarn guide that guides the first yarn downstream in the yarn running direction, and a second yarn guide that is disposed between the second cut surface and the second wall surface in the predetermined direction and guides the second yarn downstream in the yarn running direction.

[0025] The cooling unit may be configured to cool the yarn by, for example, cooling air, a wall surface cooled by the cooling air, and a cut surface. However, in such a configuration where the yarn is actively brought into contact with the wall surface and the cut surface, when the yarn is twisted by the false twisting device, the yarn is likely to roll along the wall surface or the cut surface. For this reason, the possibility that the yarn drops out of the cooling space increases. In this regard, in the present invention, the first yarn is guided downstream in the yarn running direction by the first yarn guide, and the second yarn is guided downstream in the yarn running direction by the second yarn guide. That is, the cooling unit is not configured to actively bring the yarn into contact with the cut surface and the wall surface. Therefore, the occurrence of the above-described problem can be suppressed.

[0026] The false twisting machine of the tenth invention is characterized in that, in any one of the seventh to ninth inventions, the first wall member and the second wall member are attached to the intake duct, and at least one of the first wall member and the second wall member is configured to support the partition member.

[0027] The smaller the partition member is in the predetermined direction, the shorter the distance between the first cooling space and the second cooling space in the predetermined direction, and thus the cooling unit can be designed. That is, the interval between the first yarn and the second yarn can be narrowed. However, when the partition member is very small in the predetermined direction, it may be impossible to attach the partition member to the intake duct (for example, by screwing). In the present invention, the partition member can be supported by at least one of the first wall member and the second wall member. Therefore, even when the partition member cannot be attached to the intake duct, the partition member can be properly arranged.

[0028] The false twisting machine of the eleventh invention is characterized in that, in the tenth invention, both the first wall member and the second wall member are configured to support the partition member.

[0029] In this invention, the partition member is supported by both the first and second wall members. Therefore, the partition member can be stably supported.

[0030] The false twisting machine of the 12th invention is characterized in that, in any of the 7th to 11th inventions, at least the partition member is configured to be movable relative to the first wall member and the second wall member.

[0031] Generally, yarns that undergo false twisting are treated with an oil to ensure smooth yarn movement. Since such oils can contaminate the cooling unit, the components of the cooling unit need to be cleaned regularly. In this invention, at least the partition member is configured to be movable relative to the first and second wall members. Relative movement includes, for example, cases where the first and second wall members are movable relative to the partition member. This allows for a larger space to clean these components, thereby improving the efficiency of cleaning and other related tasks.

[0032] The false twisting machine of the 13th invention is characterized in that, in the 12th invention, one of the first wall member and the second wall member is fixed in position with respect to the intake duct, and the other of the first wall member and the second wall member and the partition member are movable with respect to the one of the first wall member and the second wall member.

[0033] For the sake of explanation, one of the first and second wall members is referred to as the fixed wall member. In this invention, another cooling unit can be provided near the fixed wall member, configured to be symmetrical with respect to the cooling unit, with a line approximately parallel to the longitudinal direction of the cooling unit as the axis of symmetry. Even if such another cooling unit is provided, the two fixed wall members, which are positioned adjacent to each other, do not move. Therefore, interference between the members can be avoided when the members are moved during cleaning.

[0034] The false twisting machine of the 14th invention is characterized in that, in the 12th or 13th invention, the partition member is configured to be detachably attached to the cooling unit.

[0035] In this invention, the partition member can be completely separated from the cooling unit, which greatly improves the efficiency of tasks such as cleaning.

[0036] The false twisting machine of the 15th invention is characterized in that, in any of the 7th to 14th inventions, when the height direction is defined as the direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction, the partition member has at least in the height direction a first thread insertion guide portion that protrudes toward the workspace where the threading work is performed on the cooling device more than the first partition portion, and at least in the height direction a second thread insertion guide portion that protrudes toward the workspace more than the second partition portion.

[0037] In this invention, during the threading process, the first thread can be moved along the first thread insertion guide section, and the second thread can be moved along the second thread insertion guide section. This increases the success rate of the threading process.

[0038] The false twisting machine of the 16th invention is characterized in that, in the 15th invention, it comprises a heating device arranged upstream of the cooling device in the yarn travel direction and configured to heat the first yarn and the second yarn, the false twisting device, the cooling device and the heating device are arranged above the work space, and the upstream end of the heating device in the yarn travel direction is arranged to be further upward from the cooling device in the vertical direction compared to the downstream end of the heating device in the yarn travel direction.

[0039] In this invention, since the upstream end of the heating device in the yarn travel direction is positioned high in the vertical direction, it is difficult for an operator to manually thread the yarn onto the heating device. In such cases, generally, the yarn is first threaded onto the false twisting device, and then a device for moving the yarn upward (e.g., an air injection device) is used to thread the yarn onto both the cooling device and the heating device at the same time. When such yarn threading work is performed, it is particularly effective to increase the success rate of yarn threading using the first yarn insertion guide section and the second yarn insertion guide section. [Brief explanation of the drawing]

[0040] [Figure 1] This is a side view of the false twisting machine according to this embodiment. [Figure 2] This is a schematic diagram showing a false twisting machine deployed along the yarn path. [Figure 3] This is a view from arrow III in Figure 1. [Figure 4] This is an enlarged view of a portion of Figure 3, showing the upstream end of the cooling device in the direction of thread travel and its vicinity. [Figure 5] This is an enlarged view of a portion of Figure 3, showing the downstream end of the cooling device in the direction of thread travel and its vicinity. [Figure 6] This is an enlarged view of a portion of Figure 3, showing a false twisting device. [Figure 7] This is a side view of a false twisting device. [Figure 8] This diagram roughly shows the components that make up the cooling unit. [Figure 9] Figure 8 shows a cross-sectional view along the line IX-IX. [Figure 10] This is an explanatory diagram showing the cooling unit with the partition member removed. [Figure 11] This is a more schematic diagram of the cooling unit. [Figure 12] This is an explanatory diagram showing a modified cooling unit. [Figure 13] This is an explanatory diagram showing a cooling unit related to another modification. [Modes for carrying out the invention]

[0041] Next, embodiments of the present invention will be described. The direction perpendicular to the plane of Figure 1 is defined as the longitudinal direction of the machine frame (a predetermined direction in the present invention). For the sake of explanation, the front side of Figure 1 and the left side of Figure 2 are defined as one side in the longitudinal direction of the machine frame, and the back side of Figure 1 and the right side of Figure 2 are defined as the other side in the longitudinal direction of the machine frame. The left-right direction of Figure 1 is defined as the width direction of the machine frame. The direction perpendicular to both the longitudinal direction and the width direction of the machine frame is defined as the up-down direction (vertical direction) where gravity acts. The direction in which multiple threads Y (described later) travel side by side is defined as the thread travel direction.

[0042] (Overall configuration of the false twisting machine) First, the overall configuration of the false twisting machine 1 of this embodiment will be described with reference to Figures 1 and 2. Figure 1 is a side view of the false twisting machine 1. Figure 2 is a schematic diagram of the false twisting machine 1 unfolded along the path (yarn path) of the yarn Y.

[0043] The false twisting machine 1 is configured to simultaneously perform false twisting on multiple yarns Y made of synthetic fibers (e.g., polyester). Each of the multiple yarns Y is, for example, a multifilament yarn made of multiple filaments. Alternatively, each yarn Y may be made of a single filament. The false twisting machine 1 comprises a yarn feeding section 2, a processing section 3, and a winding section 4. The yarn feeding section 2 is configured to supply multiple yarns Y. The processing section 3 is configured to draw out multiple yarns Y from the yarn feeding section 2 and perform false twisting. The winding section 4 is configured to wind the multiple yarns Y processed by the processing section 3 onto a winding bobbin Bw. The components of the yarn feeding section 2, processing section 3, and winding section 4 are arranged in multiples along the longitudinal direction of the machine base (see Figure 2). The longitudinal direction of the machine base is the direction perpendicular to the running surface of the yarn Y (plane of paper in Figure 1), which is formed by the yarn path from the yarn feeding section 2 through the processing section 3 to the winding section 4.

[0044] The yarn supply unit 2 has a creel stand 7 that holds multiple yarn supply packages Ps and supplies multiple yarns Y to the processing unit 3. The processing unit 3 is configured to draw out multiple yarns Y from the yarn supply unit 2 and process them. The processing unit 3 is configured with the following components arranged in order from the upstream side in the yarn travel direction: a first feed roller 11, a twisting guide 12, a first heating device 13 (heating device of the present invention), a cooling device 14, a false twist device 15, a second feed roller 16, a yarn pliability device 17, a third feed roller 18, a second heating device 19, and a fourth feed roller 20. The winding unit 4 has multiple winding devices 21. Each winding device 21 winds the yarn Y that has been false twisted in the processing unit 3 onto one or more winding bobbins Bw to form one or more winding packages Pw.

[0045] The false twisting machine 1 has a main machine base 8 and a winding table 9 that are spaced apart in the machine width direction. The main machine base 8 and the winding table 9 are provided to extend approximately the same length in the machine longitudinal direction. The main machine base 8 and the winding table 9 are arranged to face each other in the machine width direction. A workspace Sw for an operator to perform tasks such as threading is formed between the main machine base 8 and the winding table 9 (see Figure 1). The false twisting machine 1 has a unit unit called a span, which includes one set of main machine bases 8 and winding tables 9. In one span, the devices are arranged so that false twisting can be performed simultaneously on multiple threads Y running in a line in the machine longitudinal direction. In the false twisting machine 1, these spans are arranged symmetrically on the left and right sides of the paper with respect to the center line C in the machine width direction of the main machine base 8 as the axis of symmetry (the main machine base 8 is common to both the left and right spans). Multiple spans are also arranged in the machine longitudinal direction.

[0046] (Configuration of the processing section) The configuration of the processing unit 3 will be explained with reference to Figures 1 and 2. The first feed roller 11 is configured to unwind the yarn Y from the yarn supply package Ps attached to the yarn supply unit 2 and send it to the first heating device 13. The first feed roller 11 is configured to send two yarns Y to the first heating device 13, for example, as shown in Figure 2, but is not limited to this. The twisting guide 12 is configured so that the twist applied to the yarn Y by the false twisting device 15 does not propagate upstream of the twisting guide 12 in the yarn travel direction.

[0047] The first heating device 13 is configured to heat the yarn Y fed from the first feed roller 11. The first heating device 13 is positioned diagonally such that its upstream end in the yarn travel direction is located above its downstream end (see Figure 1). In other words, the upstream end of the first heating device 13 in the yarn travel direction is positioned further upward from the cooling device 14 in the vertical direction compared to its downstream end in the yarn travel direction. The first heating device 13 is configured to heat four yarns Y, for example, as shown in Figure 2, but is not limited to this.

[0048] The cooling device 14 is configured to cool the yarn Y heated by the first heating device 13. Details of the cooling device 14 will be described later. The false twist device 15 is located downstream of the cooling device 14 in the yarn travel direction and is configured to impart twist to the two yarns Y (the first yarn Ya and the second yarn Yb). Details of the false twist device 15 will be described later.

[0049] The second feed roller 16 is configured to send the yarn Y processed by the false twisting device 15 to the yarn plying device 17. The conveying speed of the yarn Y by the second feed roller 16 is faster than the conveying speed of the yarn Y by the first feed roller 11. As a result, the yarn Y is stretched between the first feed roller 11 and the second feed roller 16.

[0050] The yarn splicing device 17 is configured to splice a first yarn Ya and a second yarn Yb to form yarn Yc. The yarn splicing device 17 has two interlacing nozzles 17a and 17b (see Figure 2). The yarn splicing device 17, for example, injects air into the first yarn Ya and the second yarn Yb (see the left side of Figure 2) passing through the interlacing nozzle 17a, splicing them together by air entanglement (interlacing) to form yarn Yc. The yarn splicing device 17 can also guide the first yarn Ya and the second yarn Yb downstream in the yarn travel direction without splicing them together. In this case, the first yarn Ya passes through the interlacing nozzle 17a, and the second yarn Yb passes through the interlacing nozzle 17b (see the right side of Figure 2). Instead of the yarn splicing device 17 having interlacing nozzles 17a and 17b, a yarn splicing section (not shown) having, for example, a guide or feed roller (not shown) may be provided. The yarn splicing section may splice the two yarns Y together using these guides or feed rollers, or it may guide the two yarns Y downstream in the yarn travel direction without splicing them together.

[0051] The third feed roller 18 is configured to send yarn Y, which is traveling downstream of the yarn-drawing device 17 in the yarn-drawing direction, to the second heating device 19. The third feed roller 18 is configured to send two yarns Y to the second heating device 19, for example, as shown in Figure 2, but is not limited to this. The conveying speed of yarn Y by the third feed roller 18 is slower than the conveying speed of yarn Y by the second feed roller 16. Therefore, the yarn Y is loosened between the second feed roller 16 and the third feed roller 18. The second heating device 19 is configured to heat the yarn Y sent from the third feed roller 18. The second heating device 19 extends along the vertical direction, with one provided in each span. The fourth feed roller 20 is configured to send the yarn Y heated by the second heating device 19 to the winding device 21. The fourth feed roller 20 is configured to send two yarns Y to the winding device 21, for example, as shown in Figure 2, but is not limited to this. The conveying speed of the yarn Y by the fourth feed roller 20 is slower than the conveying speed of the yarn Y by the third feed roller 18. As a result, the yarn Y becomes slack between the third feed roller 18 and the fourth feed roller 20.

[0052] In the processing unit 3 configured as described above, the yarn Y, stretched between the first feed roller 11 and the second feed roller 16, is twisted by the false twisting device 15. The twist formed by the false twisting device 15 propagates to the twist-stopping guide 12, but does not propagate upstream of the twist-stopping guide 12 in the yarn travel direction. The yarn Y, which has been stretched and twisted, is heated and heat-set in the first heating device 13, and then cooled in the cooling device 14. Downstream of the false twisting device 15 in the yarn travel direction, the yarn Y is untwisted, but the above heat-setting maintains the wavy false twisted state of the yarn Y. The two false-twisted yarns Y (the first yarn Ya and the second yarn Yb) are relaxed between the second feed roller 16 and the third feed roller 18, and are then either joined together by the joining device 17, or guided downstream in the yarn travel direction without being joined together. Furthermore, the yarn Y is heat-treated in the second heating device 19 while being loosened between the third feed roller 18 and the fourth feed roller 20. Finally, the yarn Y (yarn Yc, or the first yarn Ya and the second yarn Yb) fed from the fourth feed roller 20 is wound up by the winding device 21. This forms one or two winding packages Pw in each winding device 21.

[0053] (Structure of the winding mechanism) The configuration of the winding unit 4 will be explained with reference to Figure 2. The winding unit 4 has a plurality of winding devices 21. Each winding device 21 is configured to wind yarn Y onto, for example, one or two winding bobbins Bw. The winding device 21 has a pivot guide 22, a traverse device 23, and a cradle 24. The pivot guide 22 is a guide that acts as a pivot point when the yarn Y is traversed. For example, three pivot guides 22 are provided on each winding device 21 (see Figure 2). For example, when guiding yarn Yc that has been joined into one by the yarn joining device 17, the yarn Y is placed on the pivot guide 22 located in the center of the three pivot guides (see the left side of Figure 2). Also, when guiding two yarns Y that have been sent without being joined, the yarn Y is placed on the two pivot guides 22 at both ends of the three pivot guides 22 (see the right side of Figure 2). The traverse device 23 is configured to allow the yarn Y to be traversed by the traverse guides 25. The number of traverse guides 25 can be changed according to the number of yarn Y to be traversed. The cradle 24 is configured to rotatably support one or two winding bobbins Bw. Contact rollers 26 are positioned near the cradle 24. The contact rollers 26 contact the surface of one or two winding packages Pw and apply contact pressure. In the winding section 4 configured as described above, the yarn Y fed from the fourth feed roller 20 is wound onto one or two winding bobbins Bw by each winding device 21, forming one or two winding packages Pw. The configuration of the winding device 21 is not limited to that described above. The winding device 21 may be configured to form three or more winding packages Pw simultaneously, for example. Alternatively, the winding section 4 may have the same number of winding devices (not shown) as the number of yarn Y supplied from the yarn feeding section 2. Each of the winding devices may be configured to be able to wind up one thread Y.

[0054] In recent years, there has been a demand to enable false-twist processing of thicker yarn Y than before. On the other hand, it is also necessary to consider the number of yarn Y that can be false-twisted at the same time (hereinafter referred to as production efficiency) and the suppression of increased variation in yarn quality among multiple yarn Y (hereinafter referred to as homogeneity). Therefore, in this embodiment, in order to ensure good yarn quality while suppressing the impairment of production efficiency and homogeneity even when false-twisting thick yarn Y, the processing unit 3 has the following configuration.

[0055] (More detailed configuration of the processing section) Next, the configuration of the processing unit 3 will be described in more detail. First, the layout of the vicinity of the first heating device 13, the cooling device 14, and the false twisting device 15 will be described in more detail with reference to Figures 3 to 5. Figure 3 is a view from arrow III in Figure 1. Figure 4 is an enlarged view of a part of Figure 3 showing the upstream end of the cooling device 14 in the yarn running direction and the vicinity thereof. Figure 5 is an enlarged view of a part of Figure 3 showing the downstream end of the cooling device 14 in the yarn running direction and the vicinity thereof. In this embodiment, the first heating device 13, the cooling device 14, and the false twisting device 15 are arranged above the work space Sw.

[0056] As shown in Figure 3, a plurality of first heating devices 13 are arranged in a line along the longitudinal direction of the machine base. Each of the plurality of first heating devices 13 is configured to simultaneously heat, for example, four threads Y running in a line along the longitudinal direction of the machine base. In the direction of thread travel, a thread guide G1 (see Figure 4; upstream guide member of the present invention) is provided between the first heating device 13 and the cooling device 14 (i.e., upstream of the cooling device 14 in the direction of thread travel). The thread guide G1 is configured to guide the four threads Y downstream in the direction of thread travel. The pitch (spacing W1; see Figure 4) of the four threads Y guided by the thread guide G1 in the longitudinal direction of the machine base is defined as, for example, 14 mm. However, the size of the spacing W1 is not limited to this.

[0057] The cooling device 14 is a non-contact device that cools multiple threads Y with cooling air (details will be described later). As shown in Figure 3, the cooling device 14 has multiple cooling units 31 and an intake duct 32 connected to the multiple cooling units 31. The cooling device 14 supplies cooling air to multiple cooling spaces S (see Figures 4 and 5) formed in each of the multiple cooling units 31 by a suction device (not shown) that sucks gas from the intake duct 32. The multiple threads Y are cooled by this cooling air.

[0058] Multiple cooling units 31 are arranged side by side in the longitudinal direction of the machine base. Multiple cooling units 31 are attached to the intake duct 32. Each of the multiple cooling units 31 extends in a direction intersecting (generally perpendicular to) the longitudinal direction of the machine base. Each cooling unit 31 may extend in a substantially straight line, but is not limited to this (for example, it may be curved). Each cooling unit 31 is configured to cool two threads Y (a first thread Ya and a second thread Yb). Each cooling unit 31 has a first cooling space Sa for cooling the first thread Ya and a second cooling space Sb for cooling the second thread Yb (see Figures 4 and 5). The multiple cooling units 31 include two cooling units 31A and 31B arranged adjacent to each other in the longitudinal direction of the machine base. The two cooling units 31A and 31B are provided corresponding to one first heating device 13. The distance between cooling units 31A and 31B in the longitudinal direction of the machine frame increases, for example, towards the downstream side in the thread travel direction. The two cooling units 31A and 31B are configured symmetrically with respect to a predetermined straight line L (see Figure 3) as the axis of symmetry. More details of the cooling unit 31 will be described later.

[0059] The intake duct 32 is a duct configured to supply cooling air to multiple cooling units 31. The intake duct 32 extends in the longitudinal direction of the machine base. An intake space Ss is formed inside the intake duct 32, extending in the longitudinal direction of the machine base. The intake space Ss is connected to the cooling space S (see Figures 4 and 5). Multiple cooling units 31 are attached to the intake duct 32.

[0060] As shown in Figure 3, the multiple false twisting devices 15 are arranged in a line along the longitudinal direction of the machine. Each of the multiple false twisting devices 15 is configured to simultaneously heat two yarns Y (a first yarn Ya and a second yarn Yb) that are running side by side along the longitudinal direction of the machine. In the yarn running direction, a yarn guide G2 (see Figure 5; downstream guide member of the present invention) is provided between the cooling device 14 and the false twisting device 15 (i.e., downstream of the cooling device 14 in the yarn running direction). The yarn guide G2 is configured to guide the two yarns Y downstream in the yarn running direction. The distance W2 (see Figure 5) between the two yarns Y guided by the yarn guide G2 in the longitudinal direction of the machine is defined as, for example, 8 mm. However, the size of the distance W2 is not limited to this.

[0061] (Detailed configuration of the false twisting device) Next, the detailed configuration of the false twisting device 15 will be described with reference to Figures 6 and 7. Figure 6 is an enlarged view of a portion of Figure 3 showing the false twisting device 15. Figure 7 is a view of the false twisting device 15 from one side in the longitudinal direction of the machine base.

[0062] The false twisting device 15 is a known false twisting device, for example, as described in Japanese Patent Application Publication No. 2018-127731. As shown in Figure 6, the false twisting device 15 has a disc 41 and two belt units 42 (a first belt unit 42a and a second belt unit 42b). The false twisting device 15 is configured to impart twist to a first yarn Ya by sandwiching the first yarn Ya between the first contact surface 41a (described later) of the disc 41 and the first endless belt 46a (described later) of the first belt unit 42a. The false twisting device 15 is also configured to impart twist to a second yarn Yb by sandwiching the second yarn Yb between the second contact surface 41b (described later) of the disc 41 and the second endless belt 46b (described later) of the second belt unit 42b.

[0063] The disc 41 is a member configured to rotate with the longitudinal direction of the machine frame as the axis of rotation. The disc 41 is fixed, for example, to a common rotation shaft 43 that extends in the longitudinal direction of the machine frame. The common rotation shaft 43 is configured to connect a plurality of discs 41, each provided on a plurality of false twisting devices 15. The common rotation shaft 43 is rotationally driven, for example, by a motor (not shown). This rotates the disc 41. A first contact surface 41a is formed on one end face of the disc 41 in the longitudinal direction of the machine frame for contact with the first yarn Ya. A second contact surface 41b is formed on the other end face of the disc 41 in the longitudinal direction of the machine frame for contact with the second yarn Yb.

[0064] The first belt unit 42a is positioned on one side of the disc 41 in the longitudinal direction of the machine frame. The first belt unit 42a includes a first drive pulley 44a, a first driven pulley 45a, and a first endless belt 46a (the first belt member of the present invention). The first endless belt 46a is wound around the first drive pulley 44a and the first driven pulley 45a. The first thread Ya is positioned to be sandwiched between the first endless belt 46a and the first contact surface 41a. The rotation axes of the first drive pulley 44a and the first driven pulley 45a extend in a direction substantially perpendicular to the longitudinal direction of the machine frame. The rotation axes of the first drive pulley 44a and the first driven pulley 45a are substantially parallel to each other. The first drive pulley 44a and the first driven pulley 45a are positioned side by side in a direction substantially perpendicular to the common rotation axis 43.

[0065] The second belt unit 42b is located on the other side of the disc 41 in the longitudinal direction of the machine base. The second belt unit 42b includes a second drive pulley 44b, a second driven pulley 45b, and a second endless belt 46b (the second belt member of the present invention). The second endless belt 46b is wound around the second drive pulley 44b and the second driven pulley 45b. The second thread Yb is positioned to be sandwiched between the second endless belt 46b and the second contact surface 41b. The rotation axes of the second drive pulley 44b and the second driven pulley 45b extend in a direction substantially parallel to the rotation axes of the first drive pulley 44a and the first driven pulley 45a. The second drive pulley 44b and the second driven pulley 45b are arranged side by side in a direction substantially perpendicular to the common rotation axis 43.

[0066] The first drive pulley 44a and the second drive pulley 44b are rotationally driven by a drive unit 47 (see Figure 7). The drive unit 47 is configured to rotate the first drive pulley 44a and the second drive pulley 44b in opposite directions. The drive unit 47 includes a drive source (e.g., a motor) not shown, a first power transmission member (not shown) that transmits power from the drive source to the first drive pulley 44a, and a second power transmission member (not shown) that transmits power from the drive source to the second drive pulley 44b.

[0067] When viewed from the longitudinal direction of the machine frame, the first belt unit 42a and the second belt unit 42b are arranged to substantially overlap each other. As a result, when viewed from the longitudinal direction of the machine frame, the thread paths of the first yarn Ya and the thread paths of the second yarn Yb in the false twisting device 15 substantially overlap (see Figure 7).

[0068] In the false twisting device 15 configured as described above, the first yarn Ya is twisted by the first endless belt 46a and the first contact surface 41a. The second yarn Yb is twisted by the second endless belt 46b and the second contact surface 41b. In this way, twists are applied to both yarns Y simultaneously. The first yarn Ya and the second yarn Yb are twisted in opposite directions. For example, the first yarn Ya is given a Z twist, and the second yarn Yb is given an S twist.

[0069] (Detailed configuration of the cooling system) Next, further details of the cooling device 14 will be explained, mainly with reference to Figures 8 to 11. Figure 8 is a rough diagram showing the components constituting the cooling unit 31 (cooling unit 31A), and is a view of the cooling unit 31A from the same direction as in Figure 3. In other words, Figure 8 is a view of the cooling unit 31A from roughly below. Figure 9 is a cross-sectional view taken along line IX-IX in Figure 8. Figure 10 is an explanatory diagram showing the state in which the partition member 53, which will be described later, has been removed from the cooling unit 31A. Figure 11 is a schematic diagram of the cooling unit 31A further simplified to make the cooling space S easier to see. As described above, the cooling unit 31A and the cooling unit 31B are configured symmetrically to each other (see Figure 3). Therefore, below, the cooling unit 31A will be described in detail, and the cooling unit 31B will be described briefly.

[0070] In Figure 8, the vertical direction of the paper is defined as the height direction. The height direction is parallel to the vertical direction of the paper in Figures 9 and 10. The height direction is perpendicular to the longitudinal direction of the machine base. In this embodiment, the height direction has at least a vertical component. In this embodiment, one side in the height direction can be generally described as the upper side. The other side in the height direction can be generally described as the lower side. However, it should be noted that the relationship between the height direction and the vertical direction may change depending on the orientation in which the cooling device 14 is positioned. Also, for the sake of explanation, the direction perpendicular to both the longitudinal direction of the machine base and the height direction will be referred to as the orthogonal direction. Cooling units 31A and 31B extend at least in the orthogonal direction. In the orthogonal direction, the side closer to the first heating device 13 is defined as one side, and the side closer to the false twisting device 15 is defined as the other side. In this embodiment, each of the cooling units 31A and 31B extends in a direction slightly inclined from the orthogonal direction.

[0071] As shown in Figures 8 to 11, the cooling unit 31A includes a fixed wall plate 51 (the second wall member of the present invention), a movable wall plate 52 (the first wall member of the present invention), and a partition member 53. The fixed wall plate 51 corresponds to "one of the first wall member and the second wall member" of the present invention. The movable wall plate 52 corresponds to "the other of the first wall member and the second wall member" of the present invention. The fixed wall plate 51, the movable wall plate 52, and the partition member 53 are elongated members for forming two cooling spaces S (a first cooling space Sa and a second cooling space Sb). As shown in Figure 8, the fixed wall plate 51, the movable wall plate 52, and the partition member 53 extend elongated in a direction perpendicular to the height direction and intersecting the longitudinal direction of the machine base. In the cooling unit 31A, the movable wall plate 52, the partition member 53, and the fixed wall plate 51 are arranged in order from one side in the longitudinal direction of the machine base. In other words, the movable wall plate 52 is positioned on the far side in the longitudinal direction of the machine base. The partition member 53 is positioned on the other side of the movable wall plate 52 in the longitudinal direction of the machine base and is adjacent to the movable wall plate 52. The fixed wall plate 51 is positioned on the other side of the partition member 53 in the longitudinal direction of the machine base and is adjacent to the partition member 53. In the cooling unit 31B, these members are arranged in the reverse order in the longitudinal direction of the machine base (see the fixed wall plate 56, movable wall plate 57, and partition member 58 in Figure 4).

[0072] Next, the fixed wall plate 51 will be described in more detail. As shown in Figures 9 and 10, the fixed wall plate 51 is a member having a roughly C-shaped cross-section. That is, in the cross-section shown in Figures 9 and 10, the fixed wall plate 51 has a base portion 61, an intermediate portion 62, and a tip portion 63.

[0073] The base end portion 61 is located at one end of the fixed wall plate 51 in the height direction and extends in the longitudinal direction of the machine base. The base end portion 61 is fixed to the intake duct 32 by, for example, a screw (not shown). More specifically, a wall portion 33 extending in the longitudinal direction of the machine base is formed at the other end of the intake duct 32 in the height direction. The base end portion 61 is screwed to the wall portion 33. The intermediate portion 62 is the portion of the base end portion 61 that extends from one end in the longitudinal direction of the machine base to the other end in the height direction. A wall surface 64 (the second wall surface of the present invention) extending in the height direction is formed on one side of the intermediate portion 62 in the longitudinal direction of the machine base. The wall surface 64 is a surface for forming the second cooling space Sb in the cooling unit 31A. The wall surface 64 is provided with a plurality of contact bodies 65 (see Figures 10 and 11) that are spaced apart from each other in the yarn running direction. The contact body 65 is configured to actively bring the running thread Y (in this case, the second thread Yb) into contact with the contact body 65. This prevents the second thread Yb from unintentionally coming into contact with parts of the wall surface 64 where the contact body 65 is not provided. In addition, the intermediate section 62 has a plurality of through holes 66 that penetrate in the longitudinal direction of the machine base (see Figures 9 and 10). The through holes 66 are positioning holes through which the positioning pins 97b, which will be described later, are inserted. The tip section 63 is the portion that extends from the other end of the intermediate section 62 in the height direction to the other side in the longitudinal direction of the machine base.

[0074] Next, the movable wall plate 52 will be described in more detail. As shown in Figures 9 and 10, the movable wall plate 52 is a member having a roughly C-shaped cross-section that is oriented in the opposite direction to the fixed wall plate 51. That is, in the cross-section shown in Figures 9 and 10, the movable wall plate 52 has a base portion 71, an intermediate portion 72, and a tip portion 73.

[0075] The base portion 71 is located at one end of the movable wall plate 52 in the height direction and extends in the longitudinal direction of the machine base. The intermediate portion 72 is the portion that extends from the other end of the base portion 71 in the longitudinal direction of the machine base to the other side in the height direction. On the other side of the intermediate portion 72 in the longitudinal direction of the machine base, a wall surface 74 (the first wall surface of the present invention) extending in the height direction is formed. The wall surface 74 is a surface for forming the first cooling space Sa in the cooling unit 31A. The wall surface 74 is provided with a plurality of contact bodies 75 (see Figures 10 and 11) that are spaced apart from each other in the direction of yarn travel. The contact bodies 75 are configured to actively bring the first yarn Ya in motion into contact with the contact bodies 75. This prevents the first yarn Ya from unintentionally coming into contact with parts of the wall surface 74 where no contact bodies 75 are provided. In addition, the intermediate portion 72 has a plurality of through holes 76 that penetrate in the longitudinal direction of the machine base (see Figures 9 and 10). The through-hole 76 is a positioning hole through which the positioning pin 97a, described later, is inserted. The tip portion 73 is the portion that extends from the other end of the intermediate portion 72 in the height direction to one side in the longitudinal direction of the machine base.

[0076] The movable wall plate 52 is attached, for example, to a plurality of spring units 54 (see Figures 4, 5, 9, and 10). This allows the movable wall plate 52 to move at least in the longitudinal direction of the machine base relative to the fixed wall plate 51. The movable wall plate 52 is movable between an operating position (solid lines in Figures 4 and 5, and Figure 9) and a removal position (dash-dot lines in Figures 4 and 5, and Figure 10). The operating position is the position of the movable wall plate 52 when the false twisting machine 1 is in operation. The removal position is the position of the movable wall plate 52 when the partition member 53 is removed from the cooling unit 31A (details will be described later). In the cooling unit 31A, the spring unit 54 is provided on one side of the movable wall plate 52 in the longitudinal direction of the machine base. In the cooling unit 31B, a spring unit 59 (see Figure 4) having a similar configuration to the spring unit 54 is provided on the other side of the movable wall plate 57 in the longitudinal direction of the machine base.

[0077] The details of the spring unit 54's configuration will be described with reference to Figures 4, 9, and 10. The spring unit 54 is a force-applying unit that applies a force to the movable wall plate 52 toward the fixed wall plate 51. The spring unit 54 includes, for example, a torsion spring 81, a fixing member 82, and a regulating pin 83, as shown in Figure 4. The torsion spring 81 has a coil portion (not shown), a fixed arm 84 provided at one end of the coil portion, and a movable arm 85 provided at the other end of the coil portion. The coil portion is fixed to the intake duct 32 by the fixing member 82. The movement of the fixed arm 84 is restricted by a regulating pin 83 fixed to the intake duct 32. The movable arm 85 is attached to, for example, the movable wall plate 52 and supports the movable wall plate 52.

[0078] Next, the partition member 53 will be described in more detail with reference to Figures 9 to 11. The partition member 53 is a member for partitioning the first cooling space Sa and the second cooling space Sb in the longitudinal direction of the machine base. The partition member 53 is positioned between the fixed wall plate 51 and the movable wall plate 52 in the longitudinal direction of the machine base. The partition member 53 is configured to be detachably attached to the cooling unit 31A (details will be described later). The partition member 53 includes, for example, a first partition plate 86a, a second partition plate 86b, and a plurality of connecting members 87. The first partition plate 86a and the second partition plate 86b are connected by the plurality of connecting members 87. The first cooling space Sa is formed by the first partition plate 86a and the movable wall plate 52. The second cooling space Sb is formed by the second partition plate 86b and the fixed wall plate 51. The first cooling space Sa and the second cooling space Sb are arranged side by side in the longitudinal direction of the machine base. The first cooling space Sa and the second cooling space Sb are each connected to the intake space Ss.

[0079] The first partition plate 86a is a long plate member that extends at least in a perpendicular direction (see Figure 11). The first partition plate 86a is positioned at one end of the partition member 53 in the longitudinal direction of the machine base. The first partition plate 86a is fixed to the connecting member 87 by, for example, screws (not shown). The first partition plate 86a has a first partition portion 88a for forming a first cooling space Sa and a first thread insertion guide portion 89a positioned on the other side in the height direction of the first partition portion 88a (see Figures 9 and 10).

[0080] A first partition surface 90a is formed in the first partition portion 88a. The first partition surface 90a is located on the other side of the wall surface 74 in the longitudinal direction of the machine base and faces the wall surface 74 in the longitudinal direction of the machine base. The first partition surface 90a and the wall surface 74 form a first cooling space Sa. The first cooling space Sa and the intake space Ss are connected via a first intake slit 34a formed in the wall portion 33 of the intake duct 32. The first partition surface 90a is provided with a plurality of contact bodies 91a that are spaced apart from each other in the direction of yarn travel. The plurality of contact bodies 91a and the plurality of contact bodies 75 described above are arranged in a zigzag pattern when viewed from the height direction (see Figure 11). The contact bodies 91a are configured to actively bring the first yarn Ya into contact with the contact bodies 91a. This prevents the first yarn Ya from unintentionally coming into contact with the portion of the first partition surface 90a where no contact bodies 91a are provided. Furthermore, a spacer 92a is provided on one side of the first partition surface 90a in the longitudinal direction of the machine base, for example, to define a predetermined distance between the first partition surface 90a and the wall surface 74 (see Figure 10). The first partition section 88a is provided with a plurality of through holes 93a, 94a that penetrate in the longitudinal direction of the machine base (see Figures 9 and 10). The through hole 93a is for the insertion of the first thread guide 96a, which will be described later. The through hole 94a is for the insertion of the positioning pin 97a, which will be described later.

[0081] The first thread insertion guide section 89a is located on the other side of the first partition section 88a in the height direction. The first thread insertion guide section 89a protrudes from the first partition section 88a on the other side in the height direction (i.e., the work space Sw side) and on the other side in the longitudinal direction of the machine base (i.e., the second partition plate 86b side).

[0082] The second partition plate 86b is a long plate member that extends at least in a perpendicular direction (see Figure 11). The second partition plate 86b is located at the other end of the partition member 53 in the longitudinal direction of the machine base. The second partition plate 86b is fixed to the connecting member 87 by, for example, screws (not shown). The second partition plate 86b has a second partition portion 88b for forming a second cooling space Sb and a second thread insertion guide portion 89b located on the other side in the height direction of the second partition portion 88b (see Figures 9 and 10).

[0083] A second partition surface 90b is formed in the second partition portion 88b. The second partition surface 90b is located on one side of the wall surface 64 in the longitudinal direction of the machine base and faces the wall surface 64 in the longitudinal direction of the machine base. The second partition surface 90b and the wall surface 64 form a second cooling space Sb. The second cooling space Sb and the intake space Ss are connected via a second intake slit 34b formed in the wall portion 33 of the intake duct 32. The second partition surface 90b is provided with a plurality of contact bodies 91b that are spaced apart from each other in the yarn running direction. The plurality of contact bodies 91b and the plurality of contact bodies 65 described above are arranged in a zigzag pattern when viewed from the height direction (see Figure 11). The contact bodies 91b are configured to actively bring the second yarn Yb into contact with the contact bodies 91b. This prevents the second yarn Yb from unintentionally coming into contact with the portion of the second partition surface 90b where no contact bodies 91b are provided. Furthermore, a spacer 92b similar to the spacer 92a is provided on one side of the second partition surface 90b in the longitudinal direction of the machine base (see Figure 10). The second partition section 88b is provided with a plurality of through holes 93b and 94b that penetrate in the longitudinal direction of the machine base (see Figures 9 and 10). The through hole 93b is for the insertion of the second thread guide 96b, which will be described later. The through hole 94b is for the insertion of the positioning pin 97b, which will be described later.

[0084] The second thread insertion guide section 89b is located on the other side of the second partition section 88b in the height direction. The second thread insertion guide section 89b protrudes from the second partition section 88b on the other side in the height direction (i.e., the work space Sw side) and on one side in the longitudinal direction of the machine base (i.e., the first partition plate 86a side).

[0085] The multiple connecting members 87 are configured to connect the first partition plate 86a and the second partition plate 86b. The multiple connecting members 87 are positioned between the first partition plate 86a and the second partition plate 86b in the longitudinal direction of the machine base. As shown in Figures 9 to 11, each of the multiple connecting members 87 is provided with a first thread guide 96a, a second thread guide 96b, and positioning pins 97a and 97b.

[0086] The first thread guide 96a is configured to guide the first thread Ya downstream in the thread travel direction. The first thread guide 96a is attached, for example, to one side of the connecting member 87 in the longitudinal direction of the machine base via a spring 98a. The first thread guide 96a is inserted through a through hole 93a of the first partition plate 86a and protrudes to one side in the longitudinal direction of the machine base. The first thread guide 96a is configured to be movable in the longitudinal direction of the machine base in accordance with the expansion and contraction of the spring 98a. Specifically, when the first thread guide 96a is pressed against the wall surface 74 of the movable wall plate 52, the spring 98a is compressed. When the first thread guide 96a is separated from the wall surface 74, the spring 98a returns to its initial state.

[0087] The second thread guide 96b is configured to guide the second thread Yb downstream in the thread travel direction. The second thread guide 96b is attached, for example, to the other side of the connecting member 87 in the longitudinal direction of the machine base via a spring 98b. The second thread guide 96b is inserted through a through hole 93b of the second partition plate 86b and protrudes to the other side in the longitudinal direction of the machine base. The second thread guide 96b is configured to be movable in the longitudinal direction of the machine base in accordance with the expansion and contraction of the spring 98b, similar to the first thread guide 96a.

[0088] The positioning pin 97a is for aligning the connecting member 87 with the movable wall plate 52. The positioning pin 97a is fixed, for example, to one side of the connecting member 87 in the longitudinal direction of the machine base. The positioning pin 97a is inserted through the through hole 94a of the first partition plate 86a and protrudes to one side in the longitudinal direction of the machine base. The positioning pin 97a is configured to be inserted through the through hole 76 of the movable wall plate 52. The positioning pin 97b is for aligning the connecting member 87 with the fixed wall plate 51. The positioning pin 97b is fixed, for example, to the other side of the connecting member 87 in the longitudinal direction of the machine base. The positioning pin 97b is inserted through the through hole 94b of the second partition plate 86b and protrudes to the other side in the longitudinal direction of the machine base. The positioning pin 97b is configured to be inserted through the through hole 66 of the fixed wall plate 51.

[0089] The partition member 53 having the above configuration is supported by the fixed wall plate 51 and the movable wall plate 52 when the movable wall plate 52 is in the above-described operating position. More specifically, when the positioning pin 97a is inserted through the through hole 76 and the positioning pin 97b is inserted through the through hole 66, the partition member 53 is double-supported by the fixed wall plate 51 and the movable wall plate 52 (see Figure 9). In other words, unlike the fixed wall plate 51, the partition member 53 is not fixed to the intake duct 32. Furthermore, the partition member 53 can be removed from the cooling unit 31A when the movable wall plate 52 is in the above-described removal position (see Figure 10). That is, the partition member 53 is detachable from the cooling unit 31A. In other words, the partition member 53 is relatively movable with respect to the fixed wall plate 51 and the movable wall plate 52.

[0090] In the cooling unit 31A having the above configuration, when the false twisting machine 1 is in operation, slit-shaped first cooling space Sa and second cooling space Sb are formed, arranged side by side in the longitudinal direction of the machine base. In this embodiment, the distance between the first cooling space Sa and the second cooling space Sb in the longitudinal direction of the machine base (i.e., the distance between the first yarn Ya and the second yarn Yb in the longitudinal direction of the machine base) is constant. That is, in this embodiment, the distance does not change depending on the position in the direction in which the cooling unit 31A extends. Furthermore, the distance at the upstream end in the yarn running direction of the cooling unit 31A is denoted as WC1 (see Figure 4). More precisely, WC1 is the distance in the longitudinal direction of the machine base between the center of the end of the first cooling space Sa in the orthogonal direction (the side of the first heating device 13) and the center of the end of the second cooling space Sb in the orthogonal direction. In this embodiment, in the orthogonal direction, the position of one end of the first cooling space Sa and the position of one end of the second cooling space Sb are approximately the same. In this case, it is preferable that WC1 is approximately equal to or smaller than the aforementioned spacing W1 (see Figure 4). That is, it is preferable that WC1 ≤ W1. Furthermore, the spacing at the downstream end of the cooling unit 31A in the yarn running direction is denoted as WC2 (see Figure 5). More precisely, WC2 is the distance in the longitudinal direction of the machine frame between the center of the other end (false twisting device 15 side) of the first cooling space Sa in the orthogonal direction and the center of the other end of the second cooling space Sb in the longitudinal direction of the machine frame. In this embodiment, in the orthogonal direction, the position of the other end of the first cooling space Sa and the position of the other end of the second cooling space Sb are approximately the same. In this case, it is preferable that WC2 is approximately equal to or larger than the aforementioned spacing W2 (see Figure 5). That is, it is preferable that W2 ≤ WC2. This effectively suppresses bending of the thread path. In this embodiment, the following relationship holds:

[0091] W2 <WC2=WC1<W1

[0092] Also, in such a configuration, during the threading operation (described later) to the cooling unit 31A, the threading operation can be performed while maintaining both the first yarn Ya and the second yarn Yb substantially straight. That is, during the threading operation to the cooling unit 31A, it is hardly necessary to bend the first yarn Ya and the second yarn Yb. Therefore, it becomes easy to simultaneously thread the first yarn Ya and the second yarn Yb to the cooling unit 31A.

[0093] (Threading operation) In the present embodiment, when the threading operation to the false twisting machine 1 is performed, after the yarn Y is hung on the false twisting device 15, the yarn Y is hung on the cooling device 14 and the first heating device 13. When threading the yarn Y to the cooling device 14 and the first heating device 13, for example, an operator moves the yarn Y upward using an air injection device (not shown). Alternatively, an air injection robot capable of automatic operation without manual labor may move the yarn Y upward. The reason is that in the false twisting machine 1 of the present embodiment, the position in the vertical direction of the upstream end portion in the yarn running direction of the first heating device 13 is high, and it is difficult for the operator's hand to reach the upstream end portion. When threading is performed by the above means, the first yarn Ya is guided along the first yarn insertion guide portion 89a and enters the first cooling space Sa through the first inlet 95a. Also, the second yarn Yb is guided along the second yarn insertion guide portion 89b and enters the second cooling space Sb through the second inlet 95b. Note that during the threading operation, it is not necessary for the operator to operate the cooling unit 31A (that is, it is not necessary to move the movable wall plate 52 and the partition member 53).

[0094] [[ID=​​​​​​Furthermore, when maintenance such as cleaning of the cooling device 14 is performed, the worker moves the movable wall plate 52 from the operating position to the removal position and removes the partition member 53 from the cooling unit 31A. After cleaning the partition member 53 is complete, the worker attaches the partition member 53 to the cooling unit 31A. More specifically, with the movable wall plate 52 in the removal position, the worker inserts the positioning pin 97b of the partition member 53 into the through hole 66. Then, the worker moves the movable wall plate 52 to the operating position and inserts the positioning pin 97a into the through hole 76. As a result, the partition member 53 is supported by both the fixed wall plate 51 and the movable wall plate 52.

[0096] As described above, in the false twisting device 15 of the false twisting machine 1 of this embodiment, the first yarn Ya is sandwiched between the first endless belt 46a and the first contact surface 41a, and the second yarn Yb is sandwiched between the second endless belt 46b and the second contact surface 41b. This allows for firm twisting of the first yarn Ya and the second yarn Yb. Furthermore, since the first contact surface 41a and the second contact surface 41b are formed on the same disc 41, the distance between the first yarn Ya and the second yarn Yb in the false twisting device 15 can be reduced. Therefore, twisting can be applied to many yarns Y in a small space. In addition, in the false twisting device 15, the position where the first yarn Ya is false twisted and the position where the second yarn Yb is false twisted can be brought close together. Therefore, it is possible to suppress the significant difference between the thread paths of the first thread Ya and the second thread Yb (and consequently, the resulting variation in thread quality between the first thread Ya and the second thread Yb).

[0097] Furthermore, the cooling device 14 provided in the false twisting machine 1 of this embodiment can thoroughly cool the first yarn Ya and the second yarn Yb with cooling air. Also, since the first cooling space Sa and the second cooling space Sb are formed within the same cooling unit 31A, the distance between the first yarn Ya and the second yarn Yb in the cooling device 14 can be reduced. Therefore, a large number of yarns Y can be cooled in a small space. Moreover, as described above, since the distance between the first yarn Ya and the second yarn Yb can be reduced, it is possible to suppress the significant difference between the yarn paths of the first yarn Ya and the second yarn Yb (and the resulting variation in yarn quality as described above).

[0098] As described above, even when false-twisting thick yarn Y, it is possible to ensure good yarn quality while suppressing any loss of production efficiency and uniformity.

[0099] Furthermore, the first cooling space Sa and the second cooling space Sb are arranged side by side in the longitudinal direction of the machine. Therefore, when the first yarn Ya and the second yarn Yb are sent from the cooling device 14 to the false twisting device 15, the first yarn Ya and the second yarn Yb can maintain their alignment in the longitudinal direction of the machine. This further suppresses the separation of the yarn paths of the first yarn Ya and the second yarn Yb compared to, for example, the case where the first cooling space Sa and the second cooling space Sb are arranged side by side in directions different from the longitudinal direction of the machine. Therefore, variations in yarn quality between the first yarn Ya and the second yarn Yb can be effectively reduced.

[0100] Furthermore, WC2 is equal to WC1 (i.e., WC2 is small). Therefore, when the first yarn Ya and the second yarn Yb are sent from the cooling device 14 to the false twisting device 15, bending of the first yarn Ya and the second yarn Yb can be suppressed. Consequently, a deterioration in yarn quality can be suppressed.

[0101] Also, in the present embodiment, W2 < WC2 = WC1 < W1. Therefore, during the threading operation of the cooling unit 31A, the threading operation can be performed while maintaining both the first yarn Ya and the second yarn Yb substantially straight. That is, during the threading operation of the cooling unit 31A, it is not necessary to bend the first yarn Ya and the second yarn Yb very much. Therefore, it becomes easy to simultaneously thread the first yarn Ya and the second yarn Yb into the cooling unit 31A.

[0102] Further, the first cooling space Sa and the second cooling space Sb are partitioned by the partition member 53. Therefore, it is possible to surely avoid the first yarn Ya and the second yarn Yb getting entangled with each other due to some cause, as compared with a configuration in which the partition member 53 is not provided and the first cooling space Sa and the second cooling space Sb are not partitioned.

[0103] Also, each of the first cooling space Sa and the second cooling space Sb is connected to the intake space Ss extending in the longitudinal direction of the machine base (that is, connected in parallel). Therefore, the cooling air can be supplied to the first cooling space Sa and the second cooling space Sb substantially uniformly with a simple structure.

[0104] Further, the first cooling space Sa is formed by the wall surface 74 of the movable wall plate 52 and the first partition surface 90a of the first partition portion 88a, and the second cooling space Sb is formed by the wall surface 64 of the fixed wall plate 51 and the second partition surface 90b of the second partition portion 88b. Thus, the first cooling space Sa and the second cooling space Sb can be formed with a simple structure.

[0105] Also, the first partition surface 90a is arranged to face the wall surface 74 in the longitudinal direction of the machine base, and the second partition surface 90b is arranged to face the wall surface 64 in the longitudinal direction of the machine base. Thereby, the first inlet 95a and the second inlet 95b can be narrowed. Therefore, it is possible to suppress the first yarn Ya from dropping out of the first cooling space Sa, and it is possible to suppress the second yarn Yb from dropping out of the second cooling space Sb.

[0106] Furthermore, the cooling unit 31A has a first yarn guide 96a and a second yarn guide 96b. As a result, the first yarn Ya is guided downstream in the yarn direction by the first yarn guide 96a, and the second yarn Yb is guided downstream in the yarn direction by the second yarn guide 96b. In other words, the cooling unit 31A is not configured to actively bring the yarn Y into contact with the partition surface and the wall surface. Therefore, when the yarn Y is twisted by the false twisting device 15, it is possible to suppress the yarn Y from rolling along the wall surface or partition surface. Therefore, it is possible to suppress the yarn Y from falling out of the cooling space S.

[0107] Furthermore, the partition member 53 is supported by the fixed wall plate 51 and the movable wall plate 52. Therefore, even if the partition member 53 cannot be attached to the intake duct 32, the partition member 53 can be positioned correctly. More specifically, the partition member 53 is supported from both sides. Therefore, the partition member 53 can be stably supported.

[0108] Furthermore, the partition member 53 is detachable from (i.e., relatively movable to) the fixed wall plate 51 and the movable wall plate 52. This allows for ample space to clean the fixed wall plate 51, the movable wall plate 52, and the partition member 53. Therefore, the efficiency of cleaning and other work can be improved. In addition, since the partition member 53 can be completely separated from the cooling unit 31A, the efficiency of cleaning and other work can be greatly improved.

[0109] Furthermore, the fixed wall plate 51 is fixed in position relative to the intake duct 32, while the movable wall plate 52 and partition member 53 are movable relative to the fixed wall plate 51. This allows for the provision of a cooling unit 31B that is configured symmetrically with respect to the cooling unit 31A, with respect to the straight line L as the axis of symmetry. Even with such a cooling unit 31B provided, the two adjacent members (fixed wall plates 51 and 56) do not move. Therefore, interference between members can be avoided when the members are moved during cleaning.

[0110] Furthermore, during the threading process, the first thread Ya can be moved along the first thread insertion guide section 89a, and the second thread Yb can be moved along the second thread insertion guide section 89b. This increases the success rate of threading.

[0111] Furthermore, as in this embodiment, when the upstream end of the first heating device 13 in the thread travel direction is at a high position in the vertical direction, the thread Y is placed on the cooling device 14 and the first heating device 13 using a device (not shown) for moving the thread Y upward. When such thread placement work is performed, it is particularly effective to increase the success rate of thread placement using the first thread insertion guide section 89a and the second thread insertion guide section 89b.

[0112] Next, modified examples of the above embodiments will be described. However, components having the same configuration as the above embodiments will be denoted by the same reference numerals and their descriptions will be omitted as appropriate.

[0113] (1) In the above embodiment, the partition member 53 is supported by both the fixed wall plate 51 and the movable wall plate 52. However, it is not limited to this. The partition member 53 may be configured to be supported by only one of the fixed wall plate 51 and the movable wall plate 52.

[0114] (2) In the embodiments described above, the partition member 53 is supported by at least one of the fixed wall plate 51 and the movable wall plate 52. However, it is not limited to this. The partition member 53 may be directly attached to the intake duct 32, for example.

[0115] (3) In the embodiments described above, the partition member 53 was made detachable from the cooling unit 31A. However, it is not limited to this. The partition member 53 may be configured to move in the longitudinal direction of the machine base while being supported by at least one of the fixed wall plate 51 and the movable wall plate 52.

[0116] (4) In the embodiments described above, the movable wall plate 52 and the partition member 53 are movable relative to the fixed wall plate 51 and the intake duct 32. However, the invention is not limited to this. For example, the partition member 53 may be fixed to the intake duct 32. In this case, instead of the fixed wall plate 51, a wall member (not shown) that is movable relative to the intake duct 32 and the partition member 53 may be provided. A false twisting machine (not shown) configured in this way also corresponds to the "false twisting machine configured in which the partition member is movable relative to the first wall member and the second wall member" of the present invention.

[0117] (5) In the embodiments described above, the partition member 53 was configured to be movable relative to the first wall member and the second wall member of the present invention. However, the invention is not limited to this. Any of these members may be fixed in position with respect to the intake duct 32.

[0118] (6) In the embodiments described above, the cooling device 14 was assumed to be a non-contact type device having a first thread guide 96a and a second thread guide 96b. However, it is not limited to this. The cooling device 14 may be configured to actively bring the thread Y into contact with a wall surface (not shown), for example, as disclosed in Japanese Patent Application Publication No. 11-107084. In such a configuration, it is preferable to implement some measures to prevent the thread Y from falling out of the cooling device 14.

[0119] (7) In the embodiments described above, the first partition surface 90a is positioned to face the wall surface 74 in the longitudinal direction of the machine base, and the second partition surface 90b is positioned to face the wall surface 64 in the longitudinal direction of the machine base. That is, the first partition surface 90a and the wall surface 74 are substantially parallel, and the second partition surface 90b and the wall surface 64 are substantially parallel. However, this is not the only configuration. For example, the first partition surface 90a and the wall surface 74 may be positioned such that the distance between them in the longitudinal direction of the machine base increases as they move towards the other side in the height direction. The same applies to the second partition surface 90b and the wall surface 64.

[0120] (8) In the embodiments described above, the cooling unit 31A has a fixed wall plate 51, a movable wall plate 52, and a partition member 53. However, it is not limited to this. For example, instead of the fixed wall plate 51, the movable wall plate 52, and the partition member 53, a single member having the same function as these members may be attached to the intake duct 32.

[0121] (9) In the embodiments described above, the first cooling space Sa and the second cooling space Sb are separated by a partition member 53, but the invention is not limited to this. For example, a plurality of pins (not shown) extending in the height direction may be arranged in the direction of yarn travel between the first cooling space Sa and the second cooling space Sb. These pins may be arranged far apart from each other in the direction of yarn travel. This restricts the movement of the first yarn Ya and the second yarn Yb in the longitudinal direction of the machine base and prevents the first yarn Ya and the second yarn Yb from becoming entangled.

[0122] (10) In the embodiments described above, the first cooling space Sa and the second cooling space Sb are each connected to an intake space Ss that extends in the longitudinal direction of the machine base (i.e., they are connected in parallel). However, this is not the only configuration. For example, the first cooling space Sa and the second cooling space Sb may be connected in series in the intake direction in which cooling air is drawn into the intake space Ss. In other words, one of the first cooling space Sa and the second cooling space Sb may be located upstream of the other in the intake direction.

[0123] (11) In the above embodiments, the distance in the longitudinal direction of the machine base between the first cooling space Sa and the second cooling space Sb (that is, the distance in the longitudinal direction of the machine base between the first yarn Ya and the second yarn Yb) is assumed to be constant. That is, in the cooling unit 31A, the first yarn Ya and the second yarn Yb are substantially parallel (more specifically, WC1 = WC2). However, this is not limited thereto. In the cooling unit 31A, the first yarn Ya and the second yarn Yb do not have to be substantially parallel. For example, the distance at the downstream end in the yarn running direction of the cooling unit 31A may be narrower than the distance at the upstream end in the yarn running direction (WC2 < WC1). That is, WC2 ≤ WC1 may be satisfied. Alternatively, WC1 < WC2 may be satisfied.

[0124] Also, in the orthogonal direction, the position of one end of the first cooling space Sa and the position of one end of the second cooling space Sb do not have to substantially coincide. In the orthogonal direction, the position of the other end of the first cooling space Sa and the position of the other end of the second cooling space Sb do not have to substantially coincide. Even in this case, the strict definitions of WC1 and WC2 are the same as those described above.

[0125] (12) The relationship among W1, W2, WC1, and WC2 may be other than W2 < WC2 = WC1 < W1. For example, as described above, in order to easily thread the first yarn Ya and the second yarn Yb into the cooling unit 31A simultaneously, the yarn guides G1, G2, and the cooling unit 31A may be configured to satisfy any of the following relationships. That is, W2 ≤ WC2 ≤ WC1 ≤ W1 may be satisfied. Alternatively, W1 ≤ WC1 ≤ WC2 ≤ W2 may be satisfied. In this case, unlike the above embodiments, W2 may be larger than W1.

[0126] Alternatively, when not considering whether to thread the first yarn Ya and the second yarn Yb into the cooling unit 31A simultaneously, the relationship among W1, W2, WC1, and WC2 is not limited to that described above.

[0127] (13) In the embodiments described above, the first cooling space Sa and the second cooling space Sb are arranged side by side in the longitudinal direction of the machine base, but this is not limited to this. For example, the first cooling space (not shown) and the second cooling space (not shown) may be arranged side by side in the height direction, as in the cooling device (not shown) disclosed in Japanese Patent No. 4462751.

[0128] (14) In the embodiments described above, each of the multiple cooling units 31 is capable of cooling two threads Y. However, this is not the only way. The following will be explained with reference to Figure 12. For example, instead of the cooling units 31, a cooling unit 31M1 may be provided, configured to cool three threads Y running in a row in the longitudinal direction of the machine base, as shown in Figure 12. The cooling unit 31M1 includes, for example, the fixed wall plate 51 described above, the partition member 53 described above, the partition member 53A, and the movable wall plate 52 described above. The partition member 53A is located on the opposite side of the fixed wall plate 51, separated by the partition member 53, in the longitudinal direction of the machine base. In this modified example, the movable wall plate 52 is located on the opposite side of the fixed wall plate 51, separated by the partition members 53 and 53A, in the longitudinal direction of the machine base.

[0129] The partition member 53A is a member that extends at least in a perpendicular direction. The partition member 53A has a roughly U-shaped cross-section (see Figure 12) when viewed from the same direction as in Figure 9. The partition member 53A has a partition portion 88c, a bottom portion 99, a partition portion 88d, a thread insertion guide portion 89c, and a thread insertion guide portion 89d. The partition portion 88c is a portion that extends in the height direction. The partition portion 88c has a partition surface 90c that is positioned to face the first partition surface 90a in the longitudinal direction of the machine base. The first cooling space Sa described above is formed between the first partition surface 90a and the partition surface 90c. The partition portion 88c has a through hole 94c that is approximately the same shape and size as the through holes 94a and 94b. The bottom portion 99 is connected to the partition portion 88c and is the portion that contacts the wall portion 33. The partition portion 88d is connected to the bottom portion 99 and extends in the height direction. The partition portion 88d has a partition surface 90d that is positioned to face the wall surface 74 of the movable wall plate 52 in the longitudinal direction of the machine base. A cooling space Sd for cooling a yarn Yd that is separate from the first yarn Ya and the second yarn Yb is formed between the wall surface 74 and the partition surface 90d. The partition portion 88d has a through hole 94d that is substantially the same shape and size as the through hole 94c. The yarn insertion guide portion 89c is connected to the partition portion 88c and extends in the height direction away from the bottom portion 99. The yarn insertion guide portion 89d is connected to the partition portion 88d and extends in the height direction away from the bottom portion 99.

[0130] Furthermore, in the cooling unit 31M1, for example, an intake slit 34d connecting the intake space Ss and the cooling space Sd is formed in the wall portion 33. A connecting member 87A having the same structure as the connecting member 87 is fixed to the movable wall plate 52. A spacer 92d that defines the distance between the wall surface 74 and the partition surface 90d is provided between the wall surface 74 and the partition surface 90d in the longitudinal direction of the machine base. A thread guide 96d having the same structure as the second thread guide 96b is attached to the connecting member 87A. A positioning pin 97d having the same structure as the positioning pin 97b is attached to the connecting member 87A.

[0131] (15) As yet another modification, as shown in Figure 13, a cooling unit 31M2 may be provided which is configured to cool four threads Y running in a line in the longitudinal direction of the machine base. Although a detailed explanation is omitted, in the cooling unit 31M2, for example, two partition members 53 may be provided separated by a partition member 53A in the longitudinal direction of the machine base. This makes it possible to form a cooling space Se in the cooling unit 31M2 for cooling a thread Ye that is different from the first thread Ya, the second thread Yb, and thread Yd. In this modification, an intake slit 34e connecting the intake space Ss and the cooling space Se is formed in the wall portion 33. Furthermore, by applying this modification and the modification of (13) described above, each cooling unit (not shown) may be configured to cool five or more threads Y simultaneously. [Explanation of symbols]

[0132] 1 False twisting machine 13 First heating device (heating device) 14 Cooling device 15 False twisting device 31 Cooling Unit 31A Cooling Unit 32 Intake duct 41 discs 41a 1st contact surface 41b Second contact surface 42a First Belt Unit 42b Second Belt Unit 46a First endless belt (first belt member) 46b Second endless belt (second belt member) 51 Fixed wall plate (second wall member) 52 Movable wall plate (first wall member) 53 Partition Member 64 Wall surface (First wall surface) 74 Wall surface (2nd wall surface) 89a First thread insertion guide section 89b Second thread insertion guide section 90a First partition surface 90b Second partition surface 96a First thread guide 96b Second thread guide Sa 1st cooling space Sb 2nd cooling space Ss Intake Space W1 Interval W2 spacing WC1 Interval WC2 interval Ya First thread Yb Second thread

Claims

1. A false twisting machine configured to simultaneously false twist at least a running first yarn and a running second yarn, a false twist device configured to impart twist to the first yarn and the second yarn; a cooling device arranged upstream of the false twist device in a yarn running direction in which the first yarn and the second yarn run, the cooling device being configured to cool the first yarn and the second yarn; the false twist device includes a disk configured to rotate with a rotation axis in a predetermined direction, a first belt unit arranged on one side of the disk in the predetermined direction, and a second belt unit arranged on the other side of the disk in the predetermined direction, The disk has a first contact surface disposed at an end on the one side in the predetermined direction and a second contact surface disposed at an end on the other side in the predetermined direction, the first belt unit has a first belt member movable while contacting the first yarn, and is configured to sandwich the first yarn between the first contact surface and the first belt member to impart twist to the first yarn; the second belt unit has a second belt member movable while contacting the second yarn, and is configured to sandwich the second yarn between the second contact surface and the second belt member to impart twist to the second yarn; The cooling device includes: a cooling unit including a first cooling space for cooling the first yarn and a second cooling space arranged next to the first cooling space for cooling the second yarn; an intake duct for supplying cooling air to the first cooling space and the second cooling space, the intake duct having an intake space connected to the first cooling space and the second cooling space; The first cooling space and the second cooling space are arranged side by side in the predetermined direction, The cooling unit comprises: a partition member that separates the first cooling space and the second cooling space in the predetermined direction, The partition member is a first partition portion having a first partition surface disposed on the one side in the predetermined direction so as to form the first cooling space; a second partition portion having a second partition surface disposed on the other side in the predetermined direction so as to form the second cooling space, The cooling unit comprises: a first wall member having a first wall surface for forming the first cooling space, the first wall surface being disposed on the one side of the first partition surface in the predetermined direction; a second wall member having a second wall surface for forming the second cooling space, the second wall member being disposed on the other side of the second partition surface in the predetermined direction; 13. The false twisting machine, wherein at least the partition member is configured to be movable relative to the first wall member and the second wall member.

2. 2. The false twisting machine according to claim 1, wherein WC2≦WC1 satisfies the relationship WC1, where WC1 is a distance in the predetermined direction between an upstream end of the first cooling space in the yarn running direction and an upstream end of the second cooling space in the yarn running direction, and WC2 is a distance in the predetermined direction between a downstream end of the first cooling space in the yarn running direction and a downstream end of the second cooling space in the yarn running direction.

3. A heating device arranged upstream of the cooling device in the yarn running direction; an upstream guide member disposed between the heating device and the cooling device in the yarn running direction; a downstream guide member disposed between the cooling device and the false twist device in the yarn running direction, the upstream guide member is configured to define a distance W1 between the first yarn and the second yarn in the predetermined direction; the downstream guide member is configured to define a distance W2 between the first yarn and the second yarn in the predetermined direction; 2. The false twisting machine according to claim 1, wherein when a distance in the predetermined direction between an upstream end of the first cooling space in the yarn running direction and an upstream end of the second cooling space in the yarn running direction is defined as WC1, and a distance in the predetermined direction between a downstream end of the first cooling space in the yarn running direction and a downstream end of the second cooling space in the yarn running direction is defined as WC2, W2≦WC2≦WC1≦W1 or W1≦WC1≦WC2≦W2 holds.

4. The intake space extends in the predetermined direction, 2. The false twisting machine according to claim 1, wherein the first cooling space and the second cooling space are each connected to the intake space.

5. the first partition surface is disposed to face the first wall surface in the predetermined direction, 2. The false twisting machine according to claim 1, wherein the second partition surface is disposed so as to face the second wall surface in the predetermined direction.

6. The cooling unit comprises: a first yarn guide disposed between the first partition surface and the first wall surface in the predetermined direction and configured to guide the first yarn to a downstream side in the yarn running direction; 2. The false twisting machine according to claim 1, further comprising: a second yarn guide arranged between the second partition surface and the second wall surface in the predetermined direction, and guiding the second yarn downstream in the yarn running direction.

7. the first wall member and the second wall member are attached to the intake duct, 2. The false twisting machine according to claim 1, wherein at least one of the first wall member and the second wall member is configured to support the partition member.

8. The first wall member and the second wall member are attached to the intake duct, 7. The false twisting machine according to claim 6, wherein at least one of the first wall member and the second wall member is configured to support the partition member.

9. 8. The false twisting machine according to claim 7, wherein both the first wall member and the second wall member are configured to support the partition member.

10. The false twist processing machine of claim 8, wherein both the first wall member and the second wall member are configured to support the partition member.

11. One of the first wall member and the second wall member is fixed in position with respect to the intake duct, 2. The false twisting machine according to claim 1, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

12. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 7. The false twisting machine according to claim 6, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

13. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 8. The false twisting machine according to claim 7, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

14. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 9. The false twisting machine according to claim 8, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

15. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 10. The false twisting machine according to claim 9, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

16. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 11. The false twisting machine according to claim 10, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

17. 17. The false twisting machine according to claim 1, wherein the partition member is configured to be detachable from the cooling unit.

18. When a direction perpendicular to both the longitudinal direction and the predetermined direction of the cooling unit is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; and a second yarn insertion guide portion that protrudes toward the work space further than the second partition portion at least in the height direction.

19. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; 18. The false twisting machine according to claim 17, further comprising: a second yarn insertion guide portion that protrudes toward the working space further than the second partition portion at least in the height direction.

20. A heating device is provided upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn, the false twisting device, the cooling device and the heating device are disposed above the working space; 19. The false twisting machine according to claim 18, wherein an upstream end of the heating device in the yarn running direction is disposed above and farther away from the cooling device in the vertical direction than a downstream end of the heating device in the yarn running direction.

21. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 20. The false twisting machine according to claim 19, wherein an upstream end of the heating device in the yarn running direction is disposed above and farther away from the cooling device in the vertical direction than a downstream end of the heating device in the yarn running direction.

22. A false twisting machine configured to simultaneously false twist at least a first yarn and a second yarn that are running, a false twist device configured to impart twist to the first yarn and the second yarn; a cooling device disposed upstream of the false twist device in a yarn running direction in which the first yarn and the second yarn run, the cooling device being configured to cool the first yarn and the second yarn; a doubling device disposed downstream of the false twist device in the yarn running direction and configured to doubling the first yarn and the second yarn, the false twist device includes a disk configured to rotate with a rotation axis in a predetermined direction, a first belt unit arranged on one side of the disk in the predetermined direction, and a second belt unit arranged on the other side of the disk in the predetermined direction, The disk has a first contact surface disposed at an end on the one side in the predetermined direction and a second contact surface disposed at an end on the other side in the predetermined direction, the first belt unit has a first belt member movable while contacting the first yarn, and is configured to sandwich the first yarn between the first contact surface and the first belt member to impart twist to the first yarn; the second belt unit has a second belt member movable while contacting the second yarn, and is configured to sandwich the second yarn between the second contact surface and the second belt member to impart twist to the second yarn; The cooling device includes: a cooling unit including a first cooling space for cooling the first yarn and a second cooling space arranged next to the first cooling space for cooling the second yarn; an intake duct for supplying cooling air to the first cooling space and the second cooling space, the intake duct having an intake space connected to the first cooling space and the second cooling space; The first cooling space and the second cooling space are arranged side by side in the predetermined direction, A heating device arranged upstream of the cooling device in the yarn running direction; an upstream guide member disposed between the heating device and the cooling device in the yarn running direction; a downstream guide member disposed between the cooling device and the false twist device in the yarn running direction, the upstream guide member is configured to define a distance W1 between the first yarn and the second yarn in the predetermined direction; the downstream guide member is configured to define a distance W2 between the first yarn and the second yarn in the predetermined direction; a distance in the predetermined direction between an upstream end of the first cooling space in the yarn running direction and an upstream end of the second cooling space in the yarn running direction is defined as WC1, and a distance in the predetermined direction between a downstream end of the first cooling space in the yarn running direction and a downstream end of the second cooling space in the yarn running direction is defined as WC2, where W2≦WC2≦WC1≦W1.

23. The false twist processing machine as described in Claim 22, characterized in that when WC1 is a distance in the specified direction between the upstream end of the first cooling space in the yarn running direction and the upstream end of the second cooling space in the yarn running direction, and WC2 is a distance in the specified direction between the downstream end of the first cooling space in the yarn running direction and the downstream end of the second cooling space in the yarn running direction, WC2≦WC1.

24. The cooling unit comprises:

23. The false twisting machine according to claim 22, further comprising a partition member that separates the first cooling space and the second cooling space in the predetermined direction.

25. The intake space extends in the predetermined direction, 25. The false twisting machine according to claim 24, wherein the first cooling space and the second cooling space are each connected to the intake space.

26. The partition member, a first partition portion having a first partition surface disposed on the one side in the predetermined direction so as to form the first cooling space; a second partition portion having a second partition surface disposed on the other side in the predetermined direction so as to form the second cooling space, The cooling unit comprises: a first wall member having a first wall surface for forming the first cooling space, the first wall surface being disposed on the one side of the first partition surface in the predetermined direction; and a second wall member having a second wall surface for forming the second cooling space, the second wall surface being arranged on the other side of the second partition surface in the predetermined direction.

27. ​​The partition member, a first partition portion having a first partition surface disposed on the one side in the predetermined direction so as to form the first cooling space; a second partition portion having a second partition surface disposed on the other side in the predetermined direction so as to form the second cooling space, The cooling unit comprises: a first wall member having a first wall surface for forming the first cooling space, the first wall surface being disposed on the one side of the first partition surface in the predetermined direction; and a second wall member having a second wall surface for forming the second cooling space, the second wall surface being arranged on the other side of the second partition surface in the predetermined direction.

28. The first partition surface is arranged to face the first wall surface in the predetermined direction, 27. The false twisting machine according to claim 26, wherein the second partition surface is disposed to face the second wall surface in the predetermined direction.

29. The first partition surface is arranged to face the first wall surface in the predetermined direction, 28. The false twisting machine according to claim 27, wherein the second partition surface is disposed so as to face the second wall surface in the predetermined direction.

30. The cooling unit comprises: a first yarn guide disposed between the first partition surface and the first wall surface in the predetermined direction and configured to guide the first yarn to a downstream side in the yarn running direction; 27. The false twisting machine according to claim 26, further comprising: a second yarn guide arranged between the second partition surface and the second wall surface in the predetermined direction, and guiding the second yarn downstream in the yarn running direction.

31. The cooling unit comprises: a first yarn guide disposed between the first partition surface and the first wall surface in the predetermined direction and configured to guide the first yarn to a downstream side in the yarn running direction; 28. The false twisting machine according to claim 27, further comprising: a second yarn guide arranged between the second partition surface and the second wall surface in the predetermined direction, and guiding the second yarn downstream in the yarn running direction.

32. The cooling unit comprises: a first yarn guide disposed between the first partition surface and the first wall surface in the predetermined direction and configured to guide the first yarn to a downstream side in the yarn running direction; 29. The false twisting machine according to claim 28, further comprising: a second yarn guide arranged between the second partition surface and the second wall surface in the predetermined direction, and guiding the second yarn downstream in the yarn running direction.

33. The cooling unit comprises: a first yarn guide disposed between the first partition surface and the first wall surface in the predetermined direction and configured to guide the first yarn to a downstream side in the yarn running direction; 30. The false twisting machine according to claim 29, further comprising: a second yarn guide arranged between the second partition surface and the second wall surface in the predetermined direction, and guiding the second yarn downstream in the yarn running direction.

34. The first wall member and the second wall member are attached to the intake duct, 27. The false twist texturing machine according to claim 26, wherein at least one of the first wall member and the second wall member is configured to support the partition member.

35. The first wall member and the second wall member are attached to the intake duct, 28. The false twist texturing machine according to claim 27, wherein at least one of the first wall member and the second wall member is configured to support the partition member.

36. The false twisting machine of claim 34, wherein both the first wall member and the second wall member are configured to support the partition member.

37. The false twisting machine of claim 35, wherein both the first wall member and the second wall member are configured to support the partition member.

38. A false twist processing machine as described in any one of claims 26 to 37, characterized in that at least the partition member is configured to be movable relative to the first wall member and the second wall member.

39. One of the first wall member and the second wall member is fixed in position relative to the intake duct, 39. The false twisting machine according to claim 38, wherein the other of the first wall member and the second wall member and the partition member are movable relative to the one of the first wall member and the second wall member.

40. A false twist processing machine as described in claim 38, characterized in that the partition member is configured to be detachable from the cooling unit.

41. A false twist processing machine as described in claim 39, characterized in that the partition member is configured to be detachable from the cooling unit.

42. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; A false twisting machine according to any one of claims 26 to 37, characterized in that it further comprises a second yarn insertion guide portion that protrudes toward the work space further than the second partition portion at least in the height direction.

43. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; 39. The false twisting machine according to claim 38, further comprising: a second yarn insertion guide portion that protrudes toward the work space further than the second partition portion at least in the height direction.

44. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; 40. The false twisting machine according to claim 39, further comprising: a second yarn insertion guide portion that protrudes toward the work space further than the second partition portion at least in the height direction.

45. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; 41. The false twisting machine according to claim 40, further comprising: a second yarn insertion guide portion that protrudes toward the working space further than the second partition portion at least in the height direction.

46. When a direction perpendicular to both the longitudinal direction of the cooling unit and the predetermined direction is defined as a height direction, The partition member is a first yarn insertion guide portion that protrudes toward a work space side where a yarn threading operation to the cooling device is performed, further than the first partition portion in at least the height direction; 42. The false twisting machine according to claim 41, further comprising: a second yarn insertion guide portion that protrudes toward the working space further than the second partition portion at least in the height direction.

47. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 43. The false twisting machine according to claim 42, wherein an upstream end of the heating device in the yarn traveling direction is disposed above and farther away from the cooling device in the vertical direction than a downstream end of the heating device in the yarn traveling direction.

48. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 44. The false twisting machine according to claim 43, wherein an upstream end of the heating device in the yarn traveling direction is disposed farther up from the cooling device in the vertical direction than a downstream end of the heating device in the yarn traveling direction.

49. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 45. The false twisting machine according to claim 44, wherein an upstream end of the heating device in the yarn running direction is disposed above and farther away from the cooling device in the vertical direction than a downstream end of the heating device in the yarn running direction.

50. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 46. ​​The false twisting machine according to claim 45, wherein an upstream end of the heating device in the yarn traveling direction is disposed above and farther away from the cooling device in the vertical direction than a downstream end of the heating device in the yarn traveling direction.

51. A heating device is provided, the heating device being arranged upstream of the cooling device in the yarn running direction and configured to heat the first yarn and the second yarn; the false twisting device, the cooling device and the heating device are disposed above the working space; 47. The false twisting machine according to claim 46, wherein an upstream end of the heating device in the yarn traveling direction is disposed farther up from the cooling device in the vertical direction than a downstream end of the heating device in the yarn traveling direction.

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