Yarn threading tool and winding device

Abstract

To provide a yarn threading tool with a simple configuration, which can reduce maintenance costs.SOLUTION: A yarn threading tool 90 is used for respectively threading a plurality of pieces of yarn Y to a plurality of fulcrum guides. The yarn threading tool 90 includes a body part 91 and a bar guide part 92. The body part 91 is formed in a shape of a plate with a plurality of yarn dividing grooves 91b lined up for inserting the yarn Y. The bar guide part 92 is located on at least one side of the body part 91 in a thickness direction and is arranged spanning the plurality of yarn dividing grooves 91b. The bar guide part 92 is a different member from the body part 91. When viewed in the thickness direction of the body part 91, the bar guide part 92 is disposed partially overlapping the yarn dividing grooves 91b.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a threading tool used in threading work on a spinning machine. [Background technology]

[0002] Conventionally, there has been known a spinning machine that supplies multiple yarns made of synthetic fibers from a spinning device and winds them onto bobbins. In this spinning machine, as a preparation before winding the yarns onto the bobbins, it is necessary to hook the multiple yarns sent from the spinning device onto multiple yarn guides. Patent Documents 1 and 2 disclose this type of yarn winding machine.

[0003] In the threading operation of the yarn winding machines of Patent Documents 1 and 2, an operator inserts a threading member into the multiple yarns, so that the multiple yarns are held in a separated state. The operator moves the threading member to guide the yarns. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-114573 A [Patent Document 2] JP 2015-164875 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the yarn winding machines of Patent Documents 1 and 2, when the yarn is hooked on the yarn hooking member, wear is large at the base of the teeth of the comb-shaped portion, which increases maintenance costs. For example, it is possible to attach a guide that matches the shape of the base to the base of the teeth of the yarn hooking member, but this would be a complex structure and would increase costs.

[0006] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a thread threading tool that has a simple configuration and can reduce maintenance costs.

[0007] The problem to be solved by the present invention has been described above. Next, the means for solving this problem and the effects thereof will be described.

[0008] According to a first aspect of the present invention, there is provided a threading tool having the following configuration. That is, this threading tool is used to thread a plurality of threads on a plurality of thread guides. This threading tool includes a main body and a guide. The main body is formed in a plate shape with a plurality of grooves formed side by side for receiving the threads. The guide is disposed on at least one side in the thickness direction of the main body, and is disposed so as to straddle the plurality of grooves. The guide is a member different from the main body. The hardness of the guide is greater than the hardness of the main body. When viewed in the thickness direction of the main body, the guide is disposed so as to overlap partially with the groove or to be in contact with the innermost part of the groove.

[0009] This allows the yarn hook to have a simple structure and the portion that comes into contact with the yarn to be less prone to wear. As a result, the frequency and cost of maintenance work can be reduced. In addition, the contact length of the yarn with the hard guide can be easily increased. Therefore, the guide is less prone to wear.

[0010] In the above-mentioned threading tool, it is preferable that the guide is detachably attached to the main body.

[0011] This allows easy replacement of the guide even if it becomes worn.

[0012] In the above-mentioned threading tool, it is preferable that the guide is elongated and both ends in the longitudinal direction of the guide are fixed to the main body.

[0013] This makes it possible to fix the guide to the main body with a simple structure, while allowing the outer peripheral surface of the guide to come into contact with the yarn.

[0014] In the above threading tool, the guide is preferably disposed in contact with the main body.

[0015] This makes it possible to prevent the guide from rattling.

[0016] In the above-mentioned threading tool, it is preferable that the guide has a curved surface.

[0017] This allows the yarn to be smoothly bent by bringing the yarn into contact with the curved surface of the guide.

[0018] The yarn threading tool preferably has the following configuration: the guide is elongated, and a cross section of the guide perpendicular to the longitudinal direction of the guide is circular.

[0019] This allows the yarn to be smoothly bent at the portion in contact with the guide.

[0020] In the above-mentioned threading tool, it is preferable that the cross-sectional diameter of the guide is larger than the thickness of the main body.

[0021] This allows the contact length between the yarn and the guide to be increased.

[0022] In the above-mentioned threading tool, the guide is preferably made of ceramics.

[0023] This can improve the wear resistance of the guide.

[0024] In the thread hooking tool, it is preferable that the distance between two adjacent grooves on the side of the opening through which the thread is inserted is greater on the inner side opposite the opening.

[0025] This increases the distance between the threads guided to the rear, making it easier to hook the threads onto the thread guides one by one.

[0026] According to a second aspect of the present invention, there is provided a winding device having the following configuration. That is, this winding device winds a plurality of yarns continuously spun from a spinning device. The winding device includes a plurality of yarn guides and a yarn hooking device. The yarn guide guides the plurality of yarns. The yarn hooking device uses a yarn hooking tool to hook the plurality of yarns continuously spun from the spinning device onto the plurality of yarn guides. The yarn hooking tool includes a plate-shaped main body and a guide. The plate-shaped main body is formed with a plurality of grooves for receiving the yarns. The guide is disposed on at least one side in the thickness direction of the main body, and is disposed so as to straddle the plurality of grooves. The guide is a member different from the main body. The hardness of the guide is greater than the hardness of the main body. At least at some point in the process in which the yarn hooking device moves the yarn hooking tool, the yarn is bent at the guide.

[0027] As a result, the threading tool of the threading device has a simple structure and the portion that comes into contact with the thread is less susceptible to wear, thereby reducing the frequency and cost of maintenance work.

[0028] In the winding device, it is preferable that the guide is arranged so as to overlap part of the groove or to contact a deep portion of the groove when viewed in the thickness direction of the main body.

[0029] This makes it easy to increase the contact length of the yarn with the guide, thus reducing wear on the guide.

[0030] In the winding device, it is preferable that at least at any point during the process in which the yarn hooking device moves the yarn hooking tool, the contact length of the yarn with the guide becomes longer than the contact length of the yarn inserted in the groove with the groove.

[0031] This makes it possible to prevent the yarn from bending excessively at the groove, thereby preventing wear on the yarn hook and yarn breakage.

[0032] In the winding device, it is preferable that the guide is detachably attached to the main body.

[0033] This allows easy replacement of the guide of the threading device even if it becomes worn.

[0034] In the winding device, it is preferable that the guide is elongated and has both ends fixed to the main body in the longitudinal direction.

[0035] This makes it possible to fix the guide to the main body with a simple structure, while allowing the outer peripheral surface of the guide to come into contact with the yarn.

[0036] In the winding device, the guide is preferably disposed in contact with the main body.

[0037] This makes it possible to prevent the guide from rattling.

[0038] In the winding device, the guide preferably has a curved surface.

[0039] This allows the yarn to be smoothly bent by bringing the yarn into contact with the curved surface of the guide.

[0040] In the winding device, it is preferable that the guide is elongated and has a circular cross section perpendicular to the longitudinal direction of the guide.

[0041] This allows the yarn to be smoothly bent at the portion in contact with the guide.

[0042] In the winding device, it is preferable that the cross-sectional diameter of the guide is larger than the thickness of the main body.

[0043] This allows the contact length between the yarn and the guide to be increased.

[0044] In the winding device, the guide is preferably made of ceramics.

[0045] This can improve the wear resistance of the guide.

[0046] In the winding device, it is preferable that the distance between two adjacent grooves on the opening side into which the yarn is inserted is larger on the inner side opposite the opening side.

[0047] This increases the distance between the yarns guided to the rear, making it easier for the yarn threading device to thread the yarns one by one onto the yarn guides. [Brief description of the drawings]

[0048] [Figure 1] 1 is a perspective view showing a schematic configuration of a fiber winding system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic diagram showing the configuration of a spinning winding unit. [Diagram 3] FIG. [Figure 4] 4A is a plan view showing the configuration of the threading tool, and FIG. [Diagram 5] FIG. [Figure 6] FIG. 4 is a partial perspective view showing a state in which the thread is hung on the thread hanging tool. [Figure 7] 7 is an enlarged perspective view showing a state in which the yarn is hung on the yarn hanging tool, as viewed from an angle different from that of FIG. 6. [Figure 8] 13 is a cross-sectional view showing a case where the yarn contacts both the main body portion and the rod-shaped guide portion. FIG. [Figure 9]13 is a cross-sectional view showing a case where the yarn contacts only the rod-shaped guide portion. FIG. [Figure 10] 13 is a cross-sectional view showing a modification regarding the mounting position of the rod-shaped guide portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0049] Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing the configuration of a yarn winding system 100 according to one embodiment of the present invention. Fig. 2 is a schematic diagram showing the configuration of a yarn winding unit 1. Fig. 3 is a perspective view showing the configuration of a threading tool 90. Fig. 4(a) is a plan view showing the configuration of the threading tool 90. Fig. 4(b) is a bottom view showing the configuration of the threading tool 90.

[0050] The spinning winding system 100 shown in Fig. 1 is a system that winds up a produced synthetic fiber yarn Y to form a package P. In the spinning winding system 100, the synthetic fiber yarn Y is produced by extruding molten synthetic fiber raw material. The spinning winding system 100 is installed in a multi-story building in a plant.

[0051] 1, the take-up system 100 includes a plurality of take-up units 1. The plurality of take-up units 1 are arranged in the left-right direction. Each take-up unit 1 produces a synthetic fiber yarn Y and a package P.

[0052] In the following description, "upstream" and "downstream" refer to the upstream and downstream in the running direction of the produced yarn Y when the yarn Y is wound. The left-right direction refers to the direction in which multiple spinning winding units 1 are arranged. The direction perpendicular to both the left-right direction and the up-down direction is referred to as the "front-rear direction."

[0053] Each of the spinning winding units 1 includes a spinning device 3 and a spinning take-up device 4. The spinning take-up device 4 is disposed downstream of the spinning device 3. The spinning take-up device 4 mainly includes a take-up section 6 and a winding device 7. The take-up section 6 performs a process of sending out the yarn Y from the spinning device 3 along an appropriate path to the winding device 7. The winding device 7 performs a process of winding the yarn Y to form a package P. The take-up section 6 and the winding device 7 are a type of yarn processing device.

[0054] The yarn take-up device 4 includes various yarn processing devices in addition to the take-up section 6 and the winding device 7. The yarn processing devices include, for example, an oil guide 11 and a yarn holding device 14. The oil guide 11 and the yarn holding device 14 will be described in detail later.

[0055] The building in which the spinning winding system 100 is installed is divided into an upper floor and a lower floor by a partition floor 9. The spinning device 3 is installed on the upper floor. The take-up section 6 and the winding device 7, which are parts of the spinning take-up device 4, are installed on the lower floor.

[0056] The partition floor 9 is formed with a yarn passing hole 9a. The yarn passing hole 9a is provided for each of the spinning winding units 1. The multiple yarns Y spun by the spinning device 3 can pass through the yarn passing hole 9a. The yarn passing hole 9a forms a passage for sending the multiple yarns Y to the lower level.

[0057] A duct-shaped interfloor tube 8 is fixed to the partition floor 9 so as to connect to the yarn passing hole 9a. The interfloor tube 8 prevents yarn sway caused by external factors such as wind while multiple yarns Y are traveling from an upper story to a lower story.

[0058] Although not shown, the spinning device 3 has a plurality of (e.g., 16) spinnerets. A molten polymer in a high temperature state is supplied to the spinnerets by a polymer supplying device (not shown) consisting of a gear pump or the like. The spinning device 3 extrudes the molten polymer from each spinneret. As a result, the yarn Y is spun from each spinneret of the spinning device 3. The number of spinnerets (in other words, the number of yarns Y spun in the spinning device 3) is not limited to 16, and may be, for example, 12. For the sake of simplicity of the drawings, FIGS. 1 and 2 show the spinning winding unit 1 in which the number of yarns Y is 12.

[0059] A cooling device 10 and an oil agent guide 11 are installed on the upper floor of the spinning winding system 100.

[0060] The cooling device 10 is installed immediately below the spinning device 3. The cooling device 10 includes a plurality of cooling cylinders (not shown). Cooling air is supplied to each cooling cylinder through a cooling air pipe (not shown). The yarn Y passing through the cooling cylinder is cooled by the cooling air and solidified.

[0061] The oil guides 11 are disposed below the cooling device 10. The number of oil guides 11 provided is equal to the number of yarns Y spun by the spinning device 3. Each of the multiple oil guides 11 applies oil to each yarn Y that passes through. The multiple yarns Y to which the oil has been applied pass through yarn passing holes 9a formed in the partition floor 9 to reach the lower floor.

[0062] The operator performs a yarn unloading operation to unload a plurality of yarns Y from an upper level to a lower level where the winding device 7 and the like are installed. The yarn threading operation means an operation of setting the yarn Y from the spinning device 3 in the take-up section 6 along a predetermined path and then fixing it to the bobbin B of the winding device 7. This yarn threading operation makes the winding device 7 ready to wind the yarn Y to form a package P.

[0063] In the lower floor, a yarn holding device 14 is provided near the downstream opening of the interfloor tube 8. The yarn holding device 14 includes a suction device 14a and a cutter (not shown). When some abnormality occurs in the yarn Y or each device in the downstream spinning take-up device 4 (for example, the take-up section 6 or the winding device 7), the yarn holding device 14 cuts the multiple yarns Y traveling downstream from the spinning device 3 with the cutter. Furthermore, the yarn holding device 14 temporarily holds the multiple yarns Y on the upstream side (spinning device 3 side) that have been cut by sucking them with the suction device 14a. In this way, the multiple yarns Y spun by the spinning device 3 are sucked into the suction device 14a of the yarn holding device 14 and are held without traveling to the take-up section 6 and the winding device 7. The yarn holding device 14 continues to hold the yarn until the abnormality is resolved.

[0064] As shown in Fig. 2, the yarn regulating guide 12 is provided downstream of the yarn holding device 14 and upstream of the take-up unit 6. The yarn regulating guide 12 may be, for example, a comb-like member having 16 guide grooves formed therein corresponding to the number of yarns Y. The yarn regulating guide 12 is located on the lower level near the take-up unit 6. The yarn regulating guide 12 is provided so as to be movable in a direction parallel to the direction in which the multiple spinning winding units 1 are arranged. The yarn regulating guide 12 is driven by a guide drive unit (not shown) consisting of, for example, a cylinder.

[0065] The take-up unit 6 is used to take up a plurality of yarns Y that are lowered from an upper level. The take-up unit 6 includes a take-up frame 60 and two godet rollers 61 and 62. In the following description, the godet roller located upstream in the running direction of the yarns Y is referred to as the upstream godet roller 61, and the godet roller located downstream is referred to as the downstream godet roller 62.

[0066] When the yarn Y is wound, the yarn regulating guide 12 is substantially located directly above the upstream godet roller 61. In the following description, this position is referred to as the "operating position."

[0067] During threading, the yarn regulating guide 12 is positioned at a position shifted in the left-right direction from directly above the upstream godet roller 61. This allows the yarn threading to be performed easily. In the following description, the position of the yarn regulating guide 12 during threading is referred to as the "preparation position."

[0068] The upstream godet roller 61 is disposed on the take-up frame 60 so as to be located almost directly below the operating position of the yarn regulating guide 12. On the other hand, the downstream godet roller 62 is movable between a yarn hooking position adjacent to the upstream godet roller 61 and a package forming position located directly above the winding device 7, as shown by the dashed arrow in FIG.

[0069] During the yarn threading operation, the downstream godet roller 62 descends to a yarn threading position adjacent to the upstream godet roller 61. When the yarn threading operation is completed, the downstream godet roller 62 ascends to a package forming position.

[0070] The winding device 7 winds up multiple yarns Y traveling from the take-up section 6 to form a package P. The winding device 7 mainly includes a turret 71, two bobbin holders 72, a traverse device 73, a contact roller 74, a yarn hooking device 75, and a fulcrum guide (yarn guide) 76.

[0071] The turret 71 is rotatably installed. Two bobbin holders 72 are rotatably supported by the turret 71. Each of the bobbin holders 72 is formed to be elongated in the front-rear direction. The two bobbin holders 72 are disposed on opposite sides of the rotation axis of the turret 71. When the turret 71 rotates, the positions of the two bobbin holders 72 are interchanged.

[0072] Specifically, the two bobbin holders 72 are located at an upper winding position and a lower standby position. The bobbin holder 72 at the winding position is close to the contact roller 74, and the bobbin holder 72 at the standby position is separated from the contact roller 74. A plurality of bobbins B are attached to each bobbin holder 72. The plurality of bobbins B are arranged in the longitudinal direction of the bobbin holder 72.

[0073] The traverse device 73 includes a plurality of traverse guides 73a corresponding to a plurality of bobbins B. Each traverse guide 73a is disposed to correspond to each bobbin B. Each traverse guide 73a reciprocates in a direction parallel to the longitudinal direction of the bobbin holder 72, whereby the yarn Y is traversed and wound around the bobbin B.

[0074] The contact roller 74 comes into contact with the outer circumferential surfaces of the plurality of packages P formed on each bobbin B, and applies a contact pressure to each of the plurality of packages P.

[0075] The threading device 75 includes a threading tool 90 that is used during threading. During threading, the multiple threads Y are separated by the threading tool 90. This makes it easy to thread each thread Y at a predetermined location, improving workability.

[0076] The plurality of fulcrum guides 76 are disposed corresponding to the plurality of traverse guides 73a on the upstream side of the traverse device 73. The fulcrum guides 76 are disposed at positions corresponding to the center of the traverse stroke of the traverse guides 73a.

[0077] The fulcrum guides 76 can be moved in the front-rear direction as appropriate by a drive device (not shown). As a result, the winding device 7 can be switched as appropriate between the state shown in Figure 2 in which the interval between adjacent fulcrum guides 76 is of normal length and the states shown in Figures 5 and 6 in which the interval is shorter than normal.

[0078] The threading device 75 includes a guide rail 95, a threading arm 96, and a threading tool 90.

[0079] The guide rail 95 is a member formed in an elongated straight line. A tip end of a threading arm 96 (described later) is connected to the guide rail 95. This allows the tip end of the threading arm 96 to move along the longitudinal direction of the guide rail 95.

[0080] The guide rail 95 is disposed generally along the front-rear direction. The guide rail 95 can rotate within a predetermined angle range around a vertical rotation axis disposed near the rear end portion of the guide rail 95. A first drive device (not shown) is connected to the guide rail 95. The first drive device may have any configuration, and may be configured, for example, by a fluid cylinder, a motor, or the like. The posture of the guide rail 95 can be changed by driving the first drive device.

[0081] The threading arm 96 is an elongated member. The threading arm 96 is disposed generally along the front-rear direction. A second drive device (not shown) is connected to the base end of the threading arm 96. The second drive device may be configured as desired, and may be configured, for example, by a fluid cylinder, a motor, or the like. By driving the second drive device, the base end of the threading arm 96 can be pushed or pulled generally in the front-rear direction. As a result, the tip end of the threading arm 96 can be moved along the guide rail 95.

[0082] The thread hook 90 is fixed to the tip of the thread hook arm 96. As shown in Fig. 3, the thread hook 90 mainly includes a comb-shaped main body portion (main body) 91 and a rod-shaped guide portion (guide) 92.

[0083] The main body 91 is formed from a long and narrow plate-like member. The main body 91 can be made of, for example, metal. The main body 91 has a plurality of comb teeth 91a formed in a line in the longitudinal direction of the main body 91. A yarn distribution groove (groove) 91b is formed between two adjacent comb teeth 91a. That is, the main body 91 has a plurality of yarn distribution grooves 91b formed in a line in the longitudinal direction of the main body 91. Hereinafter, the direction perpendicular to both the longitudinal direction and the thickness direction of the main body 91 may be referred to as the width direction of the main body 91.

[0084] In the present embodiment, for example, 16 yarn distribution grooves 91b are formed in the main body 91 in accordance with the number of yarns Y. One yarn Y is taken into each yarn distribution groove 91b, and thus 16 yarns Y are separated.

[0085] 3 and 4, each yarn distribution groove 91b forms an opening at one edge in the width direction of the main body 91. The yarn Y is taken in through this opening. In the following description, the side in the width direction of the main body 91 on which the opening of the yarn distribution groove 91b is formed is referred to as the "opening side," and the opposite side (the side on which the root portions of the comb teeth 91a are located) is sometimes referred to as the "root side" of the main body 91.

[0086] As shown in Fig. 4(a), the innermost portions of the thread dividing groove 91b, which are the ends located on the root side, are aligned in a straight line along the longitudinal direction of the main body 91. The width of the thread dividing groove 91b on the opening side of the main body 91 (the size of the gap in the longitudinal direction of the main body 91) is larger than the width of the thread dividing groove 91b on the root side. This allows the thread Y to be easily inserted into the thread dividing groove 91b.

[0087] Except for the yarn distribution groove 91b located at the longitudinal tip of the main body 91, an inclined portion is arranged at the longitudinal middle of the yarn distribution groove 91b, and the yarn distribution groove 91b is formed in a broken line shape. As a result, as shown in Fig. 4 etc., the distance between two adjacent yarn distribution grooves 91b is larger on the base side than on the opening side of the main body 91. This makes it possible to hold the multiple threads Y in the multiple yarn distribution grooves 91b with the distance between them being increased.

[0088] The rod-shaped guide portion 92 is a long and thin rod-shaped member. A cross section of the rod-shaped guide portion 92 cut along a plane perpendicular to the longitudinal direction of the rod-shaped guide portion 92 (in other words, a plane perpendicular to the longitudinal direction of the main body portion 91) is circular. The rod-shaped guide portion 92 is made of, for example, abrasion-resistant ceramic.

[0089] In this embodiment, the rod-shaped guide portion 92 is formed so that the diameter D1 of the circle in its cross section is larger than the thickness T1 of the main body portion 91 (D1>T1). This allows the yarn Y to bend more gently when it is hung on the yarn hanging tool 90.

[0090] 4, the rod-shaped guide portion 92 is attached to one surface in the thickness direction of the main body portion 91. The rod-shaped guide portion 92 is arranged in contact with the main body portion 91 with no gap therebetween. For example, both ends of the rod-shaped guide portion 92 in the longitudinal direction are removably fixed to the main body portion 91.

[0091] The rod-shaped guide portion 92 may be attached to the main body 91 in any manner. For example, as shown in FIG. 4, both ends of the rod-shaped guide portion 92 are fixed to the attachment member 93. The rod-shaped guide portion 92 may be fixed to the attachment member 93 by, for example, inserting the rod-shaped guide portion 92 into a recess formed in the attachment member 93, but is not limited to this. Each of the two attachment members 93 is attached to the main body 91 via a removable bolt or the like. As a result, when the attachment members 93 are removed from the main body 91, the rod-shaped guide portion 92 is removed from the main body 91. The attachment position of the attachment members 93 relative to the main body 91 is determined so as not to overlap with the yarn distribution groove 91b on the base side of the main body 91. This prevents the yarn Y in the yarn distribution groove 91b from getting caught on the attachment member 93.

[0092] As shown in Fig. 4, the rod-shaped guide 92 of this embodiment is provided at a position corresponding to the innermost portion of the thread distribution groove 91b so as to extend along the straight line along which the innermost portions of the thread distribution grooves 91b are aligned. In the plan view shown in Fig. 4(a), the rod-shaped guide 92 is provided so that a part of it is exposed from the thread distribution groove 91b. In other words, in the plan view, a part of the rod-shaped guide 92 overlaps with the thread distribution groove 91b.

[0093] With this configuration, the yarn Y entering the yarn distribution groove 91b is more likely to come into contact with a part of the outer circumferential surface of the rod-shaped guide portion 92.

[0094] Next, the threading operation will be described in detail with reference to Fig. 5 to Fig. 8. Fig. 5 is a partial perspective view showing the operation of putting the thread Y into the threading tool 90. Fig. 6 is a partial perspective view showing the state in which the thread Y is hung on the threading tool 90. Fig. 7 is an enlarged perspective view seen from an angle different from that of Fig. 6, showing the state in which the thread Y is hung on the threading tool 90. Fig. 8 is a cross-sectional view showing the case in which the thread Y comes into contact with both the main body portion 91 and the rod-shaped guide portion 92. In Fig. 7 and subsequent figures, the attachment member 93 has been omitted for the sake of simplicity of the drawings.

[0095] If necessary, the operator performs a threading operation to hook a plurality of yarns Y spun from the spinning device 3 on the upper level onto the take-up unit 6 or the like before starting (resuming) winding of the yarn Y by the winding device 7. Scenario in which the threading operation needs to be performed include, for example, a preparation stage before starting to form the package P, or when the yarn breaks due to some reason.

[0096] In this embodiment, the multiple yarns Y from the spinning device 3 are lowered from the upper level to the lower level by an operator manually using an appropriate tool. Then, the multiple yarns Y are automatically threaded by the threading device 75 using the threading tool 90 of this embodiment.

[0097] During threading, an operator performs the work while standing in front of the yarn take-off device 4. First, the operator inputs a command for threading preparation from an operation unit (not shown) of the yarn take-off device 4.

[0098] When a command for threading preparation is input, the control device (not shown) causes the yarn take-up device 4 to perform the following threading preparation operation. First, the control device operates the lifting motor (not shown) to lower the downstream godet roller 62 from the package forming position shown in Fig. 2 etc. to the threading position near the upstream godet roller 61. The control device also moves all the fulcrum guides 76 to the threading position and collectively positions them on the front side of the yarn take-up device 4. As a result, the fulcrum guides 76 are positioned closer to the front than usual.

[0099] When the yarn threading preparation operation of the yarn take-up device 4 is completed, the operator uses a suction gun (not shown) to suck and hold the multiple yarns Y coming down from the upper spinning device 3. Furthermore, the operator operates the suction gun to sequentially thread the multiple yarns Y around two godet rollers 61, 62 arranged close to each other above the front end of the winding device 7.

[0100] After completing the threading of the yarns on the two godet rollers 61 and 62, the operator operates the above-mentioned threading device 75. As a result, the threading device 75 uses the threading tool 90 to thread the multiple yarns Y on each of the multiple fulcrum guides 76.

[0101] The yarn threading operation on the fulcrum guide 76 will be specifically described below. Before starting the yarn threading operation, the suction gun that sucks up the multiple yarns Y is placed in a predetermined position, for example, on the floor near the front of the yarn winding unit 1. Furthermore, the operator drives the first drive device and the second drive device to bring the yarn threading arm 96 into the state shown in FIG. 5, in which the yarn threading arm 96 extends forward and the guide rail 95 faces left and front.

[0102] Next, the operator drives the second drive device. As a result, the threading arm 96 contracts rearward, and moves rearward as shown by the outline arrow in Fig. 5. As a result, the opening side of the main body 91 of the threading tool 90 is inserted from the front to the rear into the multiple yarns Y traveling between the downstream godet roller 62 and the suction gun (not shown).

[0103] By the above operation, the multiple yarns Y are inserted one by one into each of the multiple yarn distribution grooves 91b formed in the main body 91. Therefore, the multiple yarns Y are held in the yarn distribution grooves 91b in a divided state. At this time, the multiple yarns Y are continuously supplied from the spinning device 3 to the yarn take-up device 4, and at the same time, are sucked by the suction gun on the downstream side. Therefore, tension is applied to the yarns Y held in the main body 91 of the yarn hook 90, and the yarns Y do not come off the yarn distribution grooves 91b by themselves.

[0104] By moving the threading tool 90 with a plurality of threads Y hung on it, the threading tool 90 moves to the position shown in FIG.

[0105] Since the suction gun is located at the front side of the spinning winding unit 1, when the yarn hooking tool 90 moves to the rear of the spinning winding unit 1, the multiple yarns Y run in a bent state at the yarn hooking tool 90, as shown in Figure 6.

[0106] More specifically, the multiple yarns Y come into contact with the main body 91 at the back of the yarn distribution groove 91b as shown in Fig. 8, and are slightly bent at this portion. At the same time, the multiple yarns Y are bent while coming into contact with part of the outer circumferential surface of a rod-shaped guide 92 provided on the yarn hook 90. ​​The hardness of the rod-shaped guide 92 is greater than the hardness of the main body 91. Therefore, the rod-shaped guide 92 is less susceptible to wear, and therefore the frequency and cost of maintenance work can be reduced.

[0107] 8, for each yarn Y, the contact length at the contact portion C2 with the rod-shaped guide portion 92 is longer than the contact length at the contact portion C1 with the main body portion 91. In addition, the radius of curvature of the curved surface of the rod-shaped guide portion 92 is larger than the radius of curvature of the portion of the yarn distribution groove 91b that contacts the yarn Y. This effectively prevents wear on the main body portion 91 and the rod-shaped guide portion 92 caused by the running of the yarn Y. In addition, bending of the yarn Y can be effectively alleviated, allowing the yarn Y to run more smoothly.

[0108] Next, the operator drives the second drive device. As a result, the guide rail 95 rotates as shown by the dashed arrow in FIG. 6, and the guide rail 95 is now facing rightward. Next, the operator drives the first drive device. As a result, the thread hooking arm 96 extends forward, and the tip of the thread hooking arm 96 moves leftward as shown by the white arrow in FIG. 6. Accordingly, the thread hooking tool 90 moves so as to pass under the multiple fulcrum guides 76. The direction of movement of the thread hooking tool 90 at this time is a slightly inclined direction such that the thread distribution groove 91b is brought closer to the fulcrum guide 76 as it moves forward.

[0109] As a result of this movement of the yarn hook 90, each yarn distribution groove 91b moves in a direction inclined with respect to the arrangement direction (i.e., the front-rear direction) of the fulcrum guides 76. Therefore, the multiple yarns Y held in a separated state in the yarn distribution grooves 91b are guided to the multiple fulcrum guides 76 arranged in a row and are respectively hooked.

[0110] After the yarn has been threaded around all of the fulcrum guides 76, the operator inputs a winding preparation command from the operation section of the yarn take-up winding unit 1. When the winding preparation command is input, the control device causes the yarn take-up winding unit 1 to perform the following winding preparation operations.

[0111] The control device causes the downstream godet roller 62 to move backward and upward from the front yarn hooking position to the rear package forming position by a lifting motor (not shown). The control device also moves the fulcrum guides 76 to return them to their normal spacing. As a result, the spacing between the fulcrum guides 76 becomes larger. At the same time, or shortly before, the control device starts the winding operation of the winding device 7.

[0112] The operator moves the suction gun to a predetermined position below the bobbin holder 72 so that each of the multiple yarns Y comes into contact with each bobbin B. In conjunction with the rotation of the bobbin B, the traverse guide 73a moves back and forth in a direction parallel to the axial direction of the bobbin B. During the reciprocating movement of the traverse guide 73a, the yarn Y is hung on each of the traverse guides 73a. Thereafter, the yarn Y can be wound while traversing the bobbin B under the guidance of the traverse guide 73a. As a result, a package P can be formed.

[0113] As described above, the thread hook 90 of this embodiment is used to hook a plurality of threads Y on a plurality of fulcrum guides 76. The thread hook 90 includes a main body 91 and a rod-shaped guide 92. The main body 91 is formed in a plate shape in which a plurality of thread distribution grooves 91b for receiving the threads Y are formed side by side. The rod-shaped guide 92 is disposed on at least one side in the thickness direction of the main body 91, and is disposed so as to straddle the plurality of thread distribution grooves 91b. The rod-shaped guide 92 is a member different from the main body 91. The hardness of the rod-shaped guide 92 is greater than the hardness of the main body 91. When viewed in the thickness direction of the main body 91, the thread distribution grooves 91b and the rod-shaped guide 92 are disposed so as to partially overlap each other.

[0114] This allows the yarn hook 90 to have a simple configuration and the portion that comes into contact with the yarn Y is less likely to wear out. As a result, the frequency and cost of maintenance work can be reduced. In addition, by partially overlapping the yarn distribution groove 91b and the rod-shaped guide portion 92, the contact length of the yarn Y with the rod-shaped guide portion 92, which has high hardness, can be easily increased. Therefore, the rod-shaped guide portion 92 is less likely to wear out.

[0115] In the thread hook 90 of this embodiment, a rod-shaped guide portion 92 is detachably attached to a main body portion 91 .

[0116] This allows easy replacement of the rod-shaped guide portion 92 even if it becomes worn.

[0117] In the yarn hook 90 of this embodiment, the rod-shaped guide portion 92 is formed to be elongated. Both ends of the rod-shaped guide portion 92 in the longitudinal direction are fixed to the main body portion 91.

[0118] This makes it possible to fix the rod-shaped guide portion 92 to the main body portion 91 with a simple configuration, with the outer circumferential surface of the rod-shaped guide portion 92 being able to come into contact with the yarn Y.

[0119] In the thread hook 90 of this embodiment, the rod-shaped guide portion 92 is disposed in contact with the main body portion 91 .

[0120] This makes it possible to prevent the rod-shaped guide portion 92 from wobbling or the like.

[0121] In the thread hook 90 of this embodiment, the rod-shaped guide portion 92 has a curved surface.

[0122] As a result, by bringing the yarn Y into contact with the curved surface of the rod-shaped guide portion 92, the yarn Y can be smoothly bent.

[0123] In the yarn hooking tool 90 of this embodiment, the rod-shaped guide portion 92 is formed to be elongated. The cross section of the rod-shaped guide portion 92 perpendicular to the longitudinal direction of the rod-shaped guide portion 92 is circular.

[0124] This allows the yarn Y to be smoothly bent at the contact portion with the rod-shaped guide portion 92.

[0125] In the thread hook 90 of this embodiment, the cross-sectional diameter of the rod-shaped guide portion 92 is larger than the thickness of the main body portion 91 .

[0126] This allows the contact length between the yarn Y and the rod-shaped guide portion 92 to be increased.

[0127] In the thread hook 90 of this embodiment, the rod-shaped guide portion 92 is made of ceramics.

[0128] This makes it possible to improve the wear resistance of the rod-shaped guide portion 92.

[0129] In the thread hook 90 of the present embodiment, the distance between two adjacent thread distribution grooves 91b is greater on the inner side, which is opposite to the opening side, than on the opening side where the thread Y is inserted.

[0130] This increases the distance between the yarns Y guided to the rear, making it easier to hook the yarns Y onto the fulcrum guides 76 one by one.

[0131] The winding device 7 of this embodiment winds the yarn Y continuously spun from the spinning device 3. The winding device 7 includes a fulcrum guide 76 and a threading device 75. The fulcrum guide 76 guides the yarn Y. The threading device 75 uses a threading tool 90 to hook the yarn Y continuously spun from the spinning device 3 onto the fulcrum guide 76. At least at some point in the process in which the threading device 75 moves the threading tool 90, the yarn Y is bent at the rod-shaped guide portion 92.

[0132] As a result, the yarn threading tool 90 provided in the yarn threading device 75 has a simple configuration, and the portion that comes into contact with the yarn Y is less likely to wear out. As a result, the frequency and cost of maintenance work can be reduced. In addition, by partially overlapping the yarn distribution groove 91b and the rod-shaped guide portion 92, the contact length of the yarn Y with the rod-shaped guide portion 92 can be easily increased. Therefore, the rod-shaped guide portion 92 is less likely to wear out.

[0133] Although the preferred embodiment of the present invention has been described above, the above configuration can be modified, for example, as follows. Each modification may be made alone, or multiple modifications may be made in any combination.

[0134] When the yarn Y is hooked on the yarn hook 90 as shown in Fig. 7, the yarn Y contacts both the innermost part of the yarn distribution groove 91b and the rod-shaped guide portion 92 as shown in Fig. 8. Alternatively, as shown in Fig. 9, the yarn Y may contact only the rod-shaped guide portion 92 without contacting the innermost part of the yarn distribution groove 91b. The phrase "the contact length of the yarn Y with the rod-shaped guide portion 92 is longer than the contact length of the yarn Y with the yarn distribution groove 91b" includes the case where the yarn Y does not contact the yarn distribution groove 91b but contacts only the rod-shaped guide portion 92 as shown in Fig. 9. In the case of Fig. 9, wear due to contact with the yarn Y occurs only in the rod-shaped guide portion 92, so maintenance work related to wear is completed by replacing the rod-shaped guide portion 92.

[0135] The rod-shaped guide portion 92 may be disposed at a slight incline with respect to the direction in which the inner portions of the yarn distribution grooves 91b are aligned.

[0136] When viewed in the thickness direction of the main body 91, the rod-shaped guide 92 may be disposed at a position that does not overlap with the yarn distribution groove 91b. Fig. 10 shows a modified example in which the rod-shaped guide 92 contacts the inner part of the yarn distribution groove 91b when viewed in the thickness direction of the main body 91. The configuration of Fig. 10 uses a yarn hooking device of a conventional configuration as the main body 91, and when the rod-shaped guide 92 is attached, the effective depth of the yarn distribution groove 91b becomes substantially equal to that of an existing yarn hooking device. Therefore, it is advantageous in that it can be applied to conventional winding devices without requiring significant modification.

[0137] Even if the rod-shaped guide portion 92 does not overlap with the yarn distribution groove 91b, by bending the yarn Y to a certain extent at the yarn hook 90, it is possible to achieve a state in which the yarn Y comes into contact with both the yarn distribution groove 91b and the rod-shaped guide portion 92, as described in Figure 8.

[0138] The positions of the downstream godet roller 62, the thread hook 90, and the suction gun when the thread hooking device 75 puts the thread Y into the thread distribution groove 91b of the thread hook 90, as described in FIG. 5, can be appropriately changed. As a result, the position and direction of the path of the thread Y can be changed. Therefore, even in the above-mentioned modified example in which the rod-shaped guide portion 92 and the inner part of the thread distribution groove 91b are in contact with each other when viewed in the thickness direction of the main body portion 91, as shown in FIG. 10, the thread Y can be in contact only with the rod-shaped guide portion 92 and not with the inner part of the thread distribution groove 91b. As shown in FIG. 10, the thread Y is slightly bent at the contact portion with the rod-shaped guide portion 92. In the process in which the thread hook 90 moves to the position of FIG. 6 after the thread Y is hooked on the thread hook 90, for example, the downstream godet roller 62 can be controlled to move from the thread hooking position to the package forming position in conjunction with the downstream godet roller 62, thereby maintaining the state of FIG. 10 in which the thread Y is in contact only with the rod-shaped guide portion 92.

[0139] The rod-shaped guide portion 92 may be attached directly to the main body portion 91 by, for example, an adhesive, without using the attachment member 93. In other words, the rod-shaped guide portion 92 may be fixed to the main body portion 91 so as not to be removable.

[0140] An appropriate gap may be formed between the rod-shaped guide portion 92 and the main body portion 91 .

[0141] The cross section of the rod-shaped guide portion 92 may be, for example, elliptical instead of circular. The entire surface of the rod-shaped guide portion 92 does not have to be curved. For example, the cross section of the rod-shaped guide portion 92 may be shaped such that an arc is formed at only one of the four corners of a rectangle, and the yarn Y comes into contact with the curved surface corresponding to this arc portion.

[0142] The diameter D1 of the cross section of the rod-shaped guide portion 92 may be equal to the thickness T1 of the thread hook 90 (D1=T1). The diameter D1 may be smaller than the thickness T1 (D1 <T1)。

[0143] The rod-shaped guide portion 92 may be formed so as to have greater high-temperature strength than the main body portion 91. The rod-shaped guide portion 92 having this configuration can withstand frictional heat caused by contact with the yarn Y. The rod-shaped guide portion 92 may be formed so as to have greater at least one of rigidity and fracture toughness than the main body portion 91. The rod-shaped guide portion 92 having this configuration can withstand the moment generated when the yarn Y is pressed against it.

[0144] Instead of being made of ceramics, the rod-shaped guide portion 92 may be made of, for example, a metal that has been subjected to an appropriate surface treatment.

[0145] A guide rail (not shown) may be provided for moving the threading tool 90 in the front-rear direction of the spinning winding unit 1. In this case, the threading tool 90 may be automatically moved in the front-rear direction of the spinning winding unit 1 during threading operation.

[0146] In the above embodiment, the rod-shaped guide 92 is attached to the surface of the main body 91 that faces the downstream side during threading. Alternatively, the rod-shaped guide 92 may be attached to the surface of the main body 91 that faces the upstream side. The rod-shaped guide 92 may be attached to each of the surfaces on both sides of the main body 91 in the thickness direction.

[0147] The rod-shaped guide portion 92 having a circular cross section may be configured so that its angle can be changed around its axis. When the rod-shaped guide portion 92 is worn to a certain extent, the angle of the rod-shaped guide portion 92 can be changed so that the yarn Y comes into contact with an unworn portion of the rod-shaped guide portion 92.

[0148] In the multiple yarn distribution grooves 91b, the distance between two adjacent yarn distribution grooves 91b on the opening side where the yarn Y is inserted may be equal to the distance on the inner side opposite to the opening side.

[0149] Instead of the elongated rod-shaped guide portion 92, for example, a block-shaped guide may be provided on the thread hook 90.

[0150] The threading operation may be performed manually by an operator using a hand-held threading tool 90. In this case, the guide rail 95, threading arm 96, etc. may be omitted. [Explanation of symbols]

[0151] 76 Pivot guide (thread guide) 90 Threading Tool 91 Main body (main body) 91b Separating thread groove (groove) 92 Rod-shaped guide part (guide) Y Thread

Claims

1. A threading tool for threading a plurality of threads onto a plurality of thread guides respectively, comprising: A plate-shaped body formed with a plurality of grooves for receiving the threads arranged side by side; A guide disposed on at least one side in the thickness direction of the body and arranged so as to straddle the plurality of grooves; wherein the guide is a member different from the body; the hardness of the guide is greater than the hardness of the body; when viewed in the thickness direction of the body, the guide is arranged such that it partially overlaps with the groove or contacts the inner part of the groove, characterized in that it is a threading tool.

2. The threading tool according to claim 1, characterized in that the guide is detachably attached to the body.

3. The threading tool according to claim 1, characterized in that the guide is formed in an elongated shape; both longitudinal ends of the guide are fixed to the body.

4. The threading tool according to claim 2, characterized in that the guide is formed in an elongated shape; both longitudinal ends of the guide are fixed to the body.

5. The threading tool according to claim 1, characterized in that the guide is arranged in a state of being in contact with the body.

6. The threading tool according to claim 2, characterized in that the guide is arranged in a state of being in contact with the body.

7. The threading tool according to any one of claims 1 to 6, characterized in that the guide has a curved surface.

8. The threading tool according to claim 7, characterized in that the guide is formed in an elongated shape; the cross-section of the guide perpendicular to the longitudinal direction of the guide is circular.

9. The threading tool according to claim 8, characterized in that the diameter of the cross-section of the guide is larger than the thickness of the body.

10. The threading tool according to any one of claims 1 to 6, characterized in that the guide is made of ceramics.

11. The threading tool according to claim 7, characterized in that the guide is made of ceramics.

12. The threading tool according to claim 8, characterized in that the guide is made of ceramics.

13. The threading tool according to claim 9, The guide is a thread hanger characterized by being made of ceramics.

14. The thread hanger according to any one of Claims 1 to 6, wherein, in a plurality of the grooves, the distance between the adjacent two grooves on the back side opposite to the opening side for inserting the thread is larger than the distance between the adjacent two grooves on the opening side for inserting the thread.

15. The thread hanger according to Claim 7, wherein, in a plurality of the grooves, the distance between the adjacent two grooves on the back side opposite to the opening side for inserting the thread is larger than the distance between the adjacent two grooves on the opening side for inserting the thread.

16. The thread hanger according to Claim 8, wherein, in a plurality of the grooves, the distance between the adjacent two grooves on the back side opposite to the opening side for inserting the thread is larger than the distance between the adjacent two grooves on the opening side for inserting the thread.

17. A winding device for winding a plurality of threads continuously spun from a spinning device, including a plurality of thread guides for guiding the plurality of threads, a threading device for hanging the plurality of threads continuously spun from the spinning device on the plurality of thread guides by using a thread hanger, wherein the threading device is provided with a thread hanger including a plate-shaped body in which a plurality of grooves for inserting the threads are formed side by side, and a guide disposed on at least one side in the thickness direction of the body and arranged so as to straddle the plurality of grooves, wherein the guide is a member different from the body, the hardness of the guide is greater than the hardness of the body, and the thread bends at the portion of the guide at least at some point in the process of the threading device moving the thread hanger.

18. The winding device according to Claim 17, wherein, when viewed in the thickness direction of the body, the guide is arranged so as to partially overlap with the groove or to be in contact with the back of the groove.

19. The winding device according to Claim 17, wherein the contact length of the thread with the guide is longer than the contact length of the thread with the groove at least at some point in the process of the threading device moving the thread hanger.

20. The winding device according to Claim 18, wherein the contact length of the thread with the guide is longer than the contact length of the thread with the groove at least at some point in the process of the threading device moving the thread hanger. ​

21. The winding device according to claim 17, wherein the guide is detachably attached to the main body.

22. The winding device according to claim 18, wherein the guide is detachably attached to the main body.

23. The winding device according to claim 19, wherein the guide is detachably attached to the main body.

24. The winding device according to claim 20, wherein the guide is detachably attached to the main body.

25. The winding device according to claim 17, wherein the guide is formed in an elongated shape, and both longitudinal ends of the guide are fixed to the main body.

26. The winding device according to claim 18, wherein the guide is formed in an elongated shape, and both longitudinal ends of the guide are fixed to the main body.

27. The winding device according to claim 17, wherein the guide is arranged in contact with the main body.

28. The winding device according to claim 18, wherein the guide is arranged in contact with the main body.

29. The winding device according to any one of claims 17 to 28, wherein the guide has a curved surface.

30. The winding device according to claim 29, wherein the guide is formed in an elongated shape, and a cross-section of the guide perpendicular to the longitudinal direction of the guide is circular.

31. The winding device according to claim 30, wherein a diameter of the cross-section of the guide is larger than a thickness of the main body.

32. The winding device according to any one of claims 17 to 28, wherein the guide is made of ceramics.

33. The winding device according to claim 29, wherein the guide is made of ceramics.

34. The winding device according to claim 30, wherein the guide is made of ceramics.

35. The winding device according to claim 31, wherein the guide is made of ceramics.

36. A take-up device according to any one of claims 17 to 28, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

37. A take-up device according to claim 29, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

38. A take-up device according to claim 30, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

39. A take-up device according to claim 31, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

40. A take-up device according to claim 32, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

41. A take-up device according to claim 33, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

42. A take-up device according to claim 34, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

43. A take-up device according to claim 35, wherein, in a plurality of said grooves, the distance between the adjacent two of said grooves on the back side opposite to the opening side for inserting said yarn is larger than the distance between the adjacent two of said grooves on the opening side for inserting said yarn.

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