Yarn winding machine

Abstract

To provide a yarn winding machine capable of preventing yarn from dropping outside in an axial direction of a package, in the yarn winding machine in which the yarn needs to be removed from a traverse device when a bobbin is changed over to continue the winding of the yarn.SOLUTION: A yarn winding machine 1 comprises a traverse device 21, a contact roller 31, a turret plate, a yarn-removing device, and regulation guides 75. The turret plate, when changing over a bobbin, changes positions of a first bobbin holder 41 and a second bobbin holder 42. The yarn-removing device, when changing over the bobbin, removes the yarn wound around a first bobbin 91 from the traverse device 21. The regulation guides 75 are provided as a pair, and, before the operation of removing the yarn from the traverse device 21 by the yarn-removing device is completed, the yarn wound around the first bobbin 91 is regulated in a yarn layer region of the first bobbin 91 in an axial direction of a package 94.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a yarn winding machine having a plurality of bobbin holders. [Background technology]

[0002] The take-up winder in Patent Document 1 produces a package by winding a yarn onto a bobbin while traversing the yarn. The take-up winder includes two bobbin holders and a guide bar. After one of the bobbin holders has completed winding the yarn onto the package, the take-up winder switches the position of the bobbin holder. This positions the empty bobbin at the winding position. After switching the position of the bobbin holder, the guide bar winds the yarn supplied to the package onto the empty bobbin. The yarn between the empty bobbin and the package is then cut. This allows the bobbin to be switched and yarn winding to continue. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-268722 Summary of the Invention [Problem to be solved by the invention]

[0004] In the yarn winding machine of Patent Document 1, the bobbin is switched while the yarn is held in the traverse device, and the yarn continues to be wound. However, in a yarn winding machine with a different configuration, a slit-shaped yarn catcher is formed at the end of the empty bobbin outside the yarn winding area, and the yarn supplied to the package is caught by the empty bobbin by guiding the yarn along the yarn catcher. In this type of yarn winding machine, the yarn supplied to the package needs to be removed from the traverse device in order to move the yarn to the yarn catcher at the end of the empty bobbin. However, if the yarn is located at the end of the traverse width when the yarn is removed from the traverse device, the yarn falls onto the end of the bobbin axially outside the yarn layer of the package, reducing the tension of the yarn and making it impossible to continue subsequent processing.

[0005] The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a yarn winding machine that can prevent the yarn from falling outward in the axial direction of the package, in a yarn winding machine that requires the yarn to be removed from the traverse device when switching bobbins and continuing winding of the yarn.

[0006] The problem to be solved by the present invention is as described above. Next, the means for solving this problem and the effects thereof will be explained.

[0007] According to an aspect of the present invention, there is provided a yarn winding machine having the following configuration. That is, the yarn winding machine includes a first bobbin holder, a second bobbin holder, a traverse device, a contact roller, a bobbin holder moving mechanism, a yarn removal device, and a regulating guide. The first bobbin holder holds a first bobbin. The second bobbin holder holds a second bobbin. The traverse device traverses the yarn to be wound onto the first bobbin or the second bobbin. The contact roller contacts the first bobbin, the second bobbin, or a package, and sends the yarn traversed by the traverse device to the first bobbin, the second bobbin, or a package. The bobbin holder moving mechanism changes the positions of the first bobbin holder and the second bobbin holder during bobbin switching, which switches from a state in which the second bobbin is separated from the contact roller and the first bobbin or package is in contact with the contact roller to a state in which the second bobbin is separated from the contact roller and the second bobbin or package is in contact with the contact roller to a state in which the second bobbin is separated from the contact roller and the second bobbin or package is in contact with the contact roller to form a package. The yarn removing device removes the yarn wound on the first bobbin from the traverse device during bobbin switching. The restriction guides are provided corresponding to both sides of the yarn layer area of ​​the first bobbin, and restrict the yarn wound on the first bobbin to within the yarn layer area of ​​the first bobbin in the axial direction of the package before the yarn removing device completes its operation of removing the yarn from the traverse device. The restricting guide includes a wall portion and an auxiliary portion. The wall portion is positioned within the yarn layer region of the first bobbin to prevent the yarn wound on the first bobbin from passing beyond the yarn layer region. The auxiliary portion is positioned from the wall portion to at least the yarn layer region outside the wall portion, and guides the yarn wound on the first bobbin that has passed beyond the outside of the wall portion to the inside of the wall portion.

[0008] As a result, the yarn is restricted within the yarn layer region of the first bobbin by the restricting guide, and the yarn can be prevented from falling outward in the axial direction of the package when the bobbin is switched. Furthermore, the auxiliary portion guides the yarn to the inside of the wall portion, and the wall portion prevents the yarn from leaking out of the wall portion, thereby more reliably restricting the yarn so that it is positioned within the range of the yarn layer region.

[0009] The yarn winding machine is preferably configured as follows: Rules A restricting guide restricts a portion of the yarn located between the first bobbin separated from the contact roller and the contact roller, the portion being closer to the first bobbin.

[0010] This allows the yarn to be restricted at a position close to the first bobbin (package), thereby more reliably preventing the yarn from falling outward in the axial direction of the package.

[0011] The yarn winding machine is preferably configured as follows: That is, the yarn between the first bobbin separated from the contact roller and the contact roller is is pressed in a direction including a component perpendicular to the axial direction of the first bobbin, The yarn winding device is provided for winding the yarn around the second bobbin, and the restricting guide is attached to the winding device.

[0012] This means: Rules Since the control guide and the winding device can be integrated, the structure of the yarn winding machine can be simplified.

[0013] The yarn winding machine is preferably configured as follows: That is, the yarn between the first bobbin separated from the contact roller and the contact roller is wound onto the second bobbin by the winding device. Rules After being restricted by the restricting guide, the yarn removing device removes the yarn from the traverse device.

[0014] This allows you to remove the thread from the traverse device. Rules Since the yarn is regulated by the control guide, the yarn can be more reliably prevented from falling outside the axial direction of the package.

[0015] The above-described yarn winding machine preferably has the following configuration: the yarn winding machine includes a cutting device that cuts the yarn between the second bobbin and the first bobbin after the yarn between the first bobbin separated from the contact roller and the contact roller is wound onto the second bobbin by the winding device. The cutting device is attached to the winding device.

[0016] In this way, since the cutting device and the regulating guide are attached to the winding device, the members that act on the connecting yarn can be arranged together, resulting in a simplified structure.

[0019] The yarn winding machine is preferably configured as follows: That is, the yarn winding machine includes a yarn directing device. The second bobbin is formed with a slit-shaped yarn catching portion for catching the yarn between the first bobbin and the contact roller, which has been separated from the contact roller during bobbin switching, onto the second bobbin. The yarn directing device directs the yarn between the first bobbin and the contact roller, which has been separated from the contact roller, toward the slit-shaped yarn catching portion. . before The restricting guide closer to the yarn catching portion restricts the yarn gathered toward the slit-shaped yarn catching portion within the yarn layer area of ​​the first bobbin.

[0020] This means: Rules By using one of the restricting guides, the yarn can be prevented from dropping off from the surface of the yarn layer during yarn gathering. In other words, since one restricting guide has two functions, the structure can be simplified compared to a configuration in which individual guides are provided for each function. [Brief explanation of the drawings]

[0021] [Figure 1] 1 is a front view of a yarn winding machine according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. 2 is a perspective view of the first housing and the second housing. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] 10 is a flowchart showing a process for switching from a state in which a package is manufactured using a first bobbin to a state in which a package is manufactured using a second bobbin. [Figure 7] FIG. 10 is an explanatory diagram showing the first half of the process of switching from a state in which a package is manufactured using a first bobbin to a state in which a package is manufactured using a second bobbin. [Figure 8] FIG. 10 is an explanatory diagram showing the latter half of the process of switching from a state in which a package is manufactured using a first bobbin to a state in which a package is manufactured using a second bobbin. DETAILED DESCRIPTION OF THE INVENTION

[0022] Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a front view of a yarn winding machine 1 according to an embodiment of the present invention. Fig. 2 is a block diagram of the yarn winding machine 1. In the following description, the upstream and downstream sides in the running direction of the yarn may be simply referred to as upstream and downstream sides.

[0023] A spinning machine (not shown) is disposed upstream of the yarn winding machine 1 shown in FIG. 1. The spinning machine produces a yarn 93 and supplies it to the yarn winding machine 1. The yarn winding machine 1 winds the yarn 93 onto a first bobbin 91 or a second bobbin 92 to produce a package 94. FIG. 1 shows a state in which the yarn 93 is wound onto the first bobbin 91 to form a yarn layer and produce the package 94. Meanwhile, the second bobbin 92 is an empty bobbin on which the yarn 93 has not been wound. The yarn 93 is, for example, an elastic yarn such as spandex. However, the type of yarn 93 is not limited to an elastic yarn and may be, for example, a synthetic yarn such as nylon or polyester.

[0024] In this embodiment, a plurality of yarns 93 aligned in the axial direction of a package 94 are supplied from the spinning machine to the yarn winding machine 1. A plurality of first bobbins 91 are also provided aligned in the axial direction of the package 94. The yarn winding machine 1 winds the plurality of yarns 93 onto the first bobbins 91, respectively, to produce a plurality of packages 94.

[0025] The following describes in detail the yarn winding machine 1. As shown in Fig. 1, the yarn winding machine 1 includes a frame 11, a first housing 20, a second housing 30, and a turret plate (bobbin holder moving mechanism) 40.

[0026] The frame 11 is a member that holds each component of the yarn winding machine 1. A traverse device 21 is attached to the first housing 20. The traverse device 21 traverses the yarn 93 being fed downstream by reciprocating in the winding width direction (the axial direction of the package 94) with a traverse guide 23 (described later) engaged with the yarn 93. This traversing movement of the yarn 93 forms a yarn layer on the first bobbin 91 or the second bobbin 92. As shown in FIG. 2 , the traverse device 21 includes a traverse cam 22 and a traverse guide 23.

[0027] The traverse cam 22 is a roller-shaped member disposed in parallel to the first bobbin 91 and the second bobbin 92. A spiral cam groove is formed on the outer peripheral surface of the traverse cam 22. The traverse cam 22 is rotationally driven by a traverse motor 51.

[0028] The traverse motor 51 is controlled by a control device 50. The control device 50 includes a CPU, a ROM, a RAM, etc. The CPU reads out a program stored in the ROM into the RAM and executes the program, thereby performing various controls related to the yarn winding machine 1.

[0029] The traverse guide 23 is a part that engages with the yarn 93. The tip of the traverse guide 23 has, for example, a substantially U-shaped guide portion that engages with the yarn 93 by pinching the yarn 93 in the winding width direction. The base end of the traverse guide 23 is positioned in the cam groove of the traverse cam 22. With this configuration, by driving the traverse cam 22 to rotate, the traverse guide 23 can be reciprocated in the winding width direction.

[0030] A contact roller 31 is rotatably attached to the second housing 30. The contact roller 31 rotates while contacting the yarn layer of the package 94 with a predetermined pressure during winding of the yarn 93, thereby feeding the yarn 93 from the traverse guide 23 to the yarn layer of the package 94 and shaping the yarn layer of the package 94. The contact roller 31 may be rotationally driven using a driving unit such as a motor.

[0031] An operation panel 32 is provided in the second housing 30. The operation panel 32 is a device that is operated by an operator. The operator operates the operation panel 32 to give instructions to the yarn winding machine 1. Examples of instructions given by the operator include starting winding, stopping winding, and changing winding conditions.

[0032] As shown in FIG. 2, the yarn winding machine 1 includes a lifting device 60. The lifting device 60 lifts and lowers the first housing 20 and the second housing 30 as a unit. Specifically, the first housing 20 and the second housing 30 are attached to a lifting member 65. A ball nut 61 is attached to the lifting member 65. A threaded rod 62 is attached to the frame 11. The first housing 20 and the second housing 30 can be lifted and lowered by rotating the threaded rod 62 using a lifting motor 63. The lifting motor 63 is controlled by the control device 50. The lifting device 60 may be realized by using a cylinder instead of a ball screw.

[0033] The turret plate 40 is a disk-shaped member. The turret plate 40 is rotatably attached to the frame 11. The rotation axis of the turret plate 40 is at the center position of the turret plate 40. The turret plate 40 is rotationally driven by a turret motor 53 shown in FIG. 2. The turret motor 53 is controlled by the control device 50.

[0034] A first bobbin holder 41 and a second bobbin holder 42 are provided on the turret plate 40 at two locations facing each other across the center position. A plurality of first bobbins 91 can be mounted on the first bobbin holder 41 and lined up in the axial direction. A plurality of second bobbins 92 can be mounted on the second bobbin holder 42 and lined up in the axial direction. The positions of the first bobbin holder 41 and the second bobbin holder 42 can be changed by rotating the turret plate 40. Note that, as long as the positions of the first bobbin holder 41 and the second bobbin holder 42 can be changed, another device may be used instead of the turret plate 40.

[0035] The first bobbin holder 41 is rotatable relative to the turret plate 40 around the axial position of the first bobbin holder 41 as the center of rotation. The first bobbin holder 41 is driven to rotate by a first bobbin holder motor 54 shown in FIG. 2. Similarly, the second bobbin holder 42 is rotatable relative to the turret plate 40 around the axial position of the second bobbin holder 42 as the center of rotation. The second bobbin holder 42 is driven to rotate by a second bobbin holder motor 55 shown in FIG. 2. The first bobbin holder motor 54 and the second bobbin holder motor 55 are controlled by the control device 50.

[0036] 1, with the first bobbin holder 41 and the second bobbin holder 42 lined up one above the other, the higher first bobbin holder 41 is in the winding position, and the lower second bobbin holder 42 is in the standby position. The yarn winding machine 1 winds a yarn 93 onto the first bobbin 91 of the first bobbin holder 41 at the winding position to produce a package 94.

[0037] Furthermore, when a predetermined amount of yarn 93 has been wound onto the first bobbin holder 41 and the package 94 is full, the turret plate 40 rotates, switching the positions of the first bobbin holder 41 and the second bobbin holder 42. After that, the package 94 from the first bobbin holder 41, which is now full and in the standby position, is collected, and the yarn 93 is wound onto the second bobbin 92 of the second bobbin holder 42, which is in the winding position. A new first bobbin 91 is attached to the first bobbin holder 41 from which the package 94 has been collected. Hereinafter, the time (period) from when the state in which the yarn 93 is wound onto the first bobbin 91 to produce the package 94 to when the state in which the yarn 93 is wound onto the second bobbin 92 to produce the package 94 is switched is referred to as "bobbin switching time."

[0038] As shown in FIGS. 3 and 4, the yarn winding machine 1 includes a winding device 71. The winding device 71 performs a winding operation when switching bobbins. The winding operation is an operation in which the winding device 71 acts on (presses) a connection yarn 93a wound between a first bobbin 91 and a second bobbin 92, thereby winding the yarn 93 around the second bobbin 92 at a predetermined angle, as shown in the upper diagram of FIG. 8, which will be described later. The winding device 71 includes an actuator (cylinder, solenoid, motor, or the like) (not shown) for performing the winding operation. The actuator of the winding device 71 is controlled by the control device 50. As a result, the tip of the winding device 71 (the portion that presses the connection yarn 93a) can move between an operating position where it presses the connection yarn 93a and a retracted position where it is retracted from the operating position.

[0039] A restricting guide 75 is attached to the tip of the winding device 71. When switching bobbins, the restricting guide 75 restricts the position of the connecting yarn 93a before the yarn removing device 85, which will be described later, completes the operation of removing the yarn from the traverse device 21. As shown in FIG. 4, the restricting guide 75 includes a wall portion 76 and an auxiliary portion 77. A pair of restricting guides 75 is provided for each of the bobbins 91, 92 attached to the bobbin holders 41, 42.

[0040] Two walls 76 are provided for each bobbin 91, 92, and the two walls 76 are positioned opposite each other. The positions of the two walls 76 (more specifically, the positions of the wall surfaces) are the restriction positions. As shown in FIG. 4, the area of ​​the first bobbin 91 around which the yarn 93 is wound is referred to as the yarn layer area. The restriction positions of the two walls 76 are located within the yarn layer area in the axial direction of the package 94. As a result, the restriction guide 75 (walls 76) restricts the yarn 93 wound around the first bobbin 91 within the yarn layer area (prevents the yarn 93 from going beyond the yarn layer area).

[0041] The auxiliary portion 77 guides the connection yarn 93a so that it is positioned inside the two wall portions 76. The auxiliary portion 77 is provided in the axial direction of the package 94, extending from the wall portions 76 to a position outside the wall portions 76 and beyond the yarn layer region. The auxiliary portion 77 has a portion that inclines or curves toward the winding device 71 as it approaches the center of the yarn layer region in the axial direction of the package 94. This allows the auxiliary portion 77 to guide the yarn 93 wound around the first bobbin 91 inside the two wall portions 76. Specifically, during the winding operation by the winding device 71, the connection yarn 93a approaches the regulating guide 75. At this time, when the connection yarn 93a comes into contact with the auxiliary portion 77 (i.e., when the connection yarn 93a is positioned beyond the outside of the wall portions 76), the connection yarn 93a is guided along the inclined surface of the auxiliary portion 77. As a result, the connection yarn 93a is guided inside the two wall portions 76. The boundary between the auxiliary portion 77 and the wall portion 76 is chamfered in an arc shape so as not to damage the connecting thread 93a when guiding the thread 93a.

[0042] The plurality of regulating guides 75 in this embodiment are connected to the base end portion 74. In other words, the base end portion 74 and the plurality of regulating guides 75 are integrally formed, and more specifically, configured as a single flat plate-shaped member. Alternatively, individual regulating guides 75 may be attached to the winding device 71. The shape of the regulating guides 75 in this embodiment is an example and can be modified as appropriate. For example, the auxiliary portion 77 may be omitted.

[0043] A cutting device 81 is also attached to the tip of the winding device 71. The cutting device 81 is a device that cuts the connecting yarn 93a after the yarn 93 has been wound around the second bobbin 92 by the winding device 71. The cutting device 81 includes a fixed blade 82 and a movable blade 83. The cutting device 81 also includes an actuator (not shown) for moving the movable blade 83. The cutting device 81 cuts the yarn 93 by pinching the yarn 93 between the fixed blade 82 and the movable blade 83. The actuator of the cutting device 81 is controlled by the control device 50. One cutting device 81 is provided for each of the bobbins 91, 92 attached to the bobbin holders 41, 42. The cutting device 81 is provided at a position where it can cut the yarn 93 from a yarn catching portion 92a (described later) to the wall portion 76 on the yarn catching portion 92a side.

[0044] The cutting device 81 and the restricting guide 75 of this embodiment are fastened together to the winding device 71. Specifically, the mounting holes of the cutting device 81, the restricting guide 75, and the winding device 71 are aligned and fastened together with bolts or the like. Note that the cutting device 81 and the restricting guide 75 may be attached separately to the winding device 71. Also, the cutting device 81 of this embodiment is an example, and the cutting device 81 may not be separated into the fixed blade 82 and the movable blade 83.

[0045] As shown in FIGS. 3 and 4, a slit-shaped yarn catcher 92a is formed near the axial end of the second bobbin 92 (e.g., outside the winding width direction) in this embodiment (the same applies to the first bobbin 91). The yarn catcher 92a is used to capture the yarn 93 between the contact roller 31 and the first bobbin 91 that has moved away from the contact roller 31 when switching bobbins. The yarn catcher 92a is generally used when producing a package 94 of a relatively thick elastic yarn that has high stretchability. Note that the yarn catcher 92a is not essential and may be omitted. In this case, the yarn 93 can be fixed to the second bobbin 92, for example, by winding the yarn 93 around the second bobbin 92 in a straight line.

[0046] As shown in Fig. 3, a yarn directing device 88 is disposed above the traverse device 21. When switching bobbins, after a yarn removing device 85 (described later) removes the yarn 93 from the traverse guide 23, the yarn directing device 88 directs the yarn 93 between the first bobbin 91, which has moved away from the contact roller 31, and the contact roller 31 to the yarn catching portion 92a of the second bobbin 92. As shown in Fig. 5, the yarn directing device 88 includes a base plate 88a, a slide plate 88c, a yarn directing member 88d, and a drive device 88e.

[0047] A slide hole 88b is formed in the base plate 88a. The slide plate 88c is configured to be slidable along the slide hole 88b relative to the base plate 88a. A plurality of yarn pulling members 88d are fixed to the slide plate 88c at regular intervals. As the slide plate 88c slides, each yarn pulling member 88d pulls the plurality of yarns 93 arranged side by side in the winding width direction toward the yarn catching unit 92a. The drive unit 88e is a cylinder, and its base end (piston side) is fixed to the base plate 88a and its tip end (rod side) is fixed to the slide plate 88c. As the drive unit 88e extends and retracts, the slide plate 88c (yarn pulling member 88d) can be operated relative to the base plate 88a. The drive unit 88e is controlled by the control device 50. The above-described yarn pulling device 88 is an example, and the yarn pulling device 88 may be realized with a different configuration.

[0048] Next, with reference to Figures 6 to 8, a process of switching from a state in which the yarn 93 is wound around the first bobbin 91 to produce a package 94 to a state in which the yarn 93 is wound around the second bobbin 92 to produce a package 94 will be described.

[0049] The upper diagram in FIG. 7 illustrates a state in which a yarn 93 is wound onto a first bobbin 91 of the first bobbin holder 41 to produce a package 94. Specifically, the traverse device 21 traverses the yarn 93 to be wound onto the first bobbin 91. The contact roller 31 contacts the first bobbin 91 (package 94) and sends the yarn 93 traversed by the traverse device 21 to the first bobbin 91 (package 94). As a result, the yarn 93 is wound onto the first bobbin 91 to produce a package 94. While the yarn 93 is being wound, the control device 50 determines whether the package 94 on the first bobbin holder 41 is full (S101). The control device 50 determines whether the package 94 is full based on, for example, a detection value from a sensor that detects the position of the contact roller 31 or the like as the winding of the package 94 thickens or a sensor that detects the wound length of the yarn 93.

[0050] When the control device 50 determines that the package 94 on the first bobbin holder 41 is full, it controls the lifting device 60 to lift the first housing 20 and the second housing 30 (S102).

[0051] Next, the control device 50 switches the state from one in which the second bobbin 92 is separated from the contact roller 31 and the first bobbin 91 (package 94) is in contact with the contact roller 31 to wind the yarn 93 onto the first bobbin 91 to produce the package 94 to one in which the first bobbin 91 is separated from the contact roller 31 and the second bobbin 92 (package 94) is in contact with the contact roller 31 to wind the yarn 93 onto the second bobbin 92 to produce the package 94. First, the control device 50 controls the turret motor 53 to switch the positions of the first bobbin holder 41 and the second bobbin holder 42 (S103). As a result, the second bobbin holder 42 is located at the winding position, and the first bobbin holder 41 is located at the standby position. The lower diagram in FIG. 7 shows the state after completion of step S103. As shown in this figure, by switching the positions of the two bobbins, the thread 93 is hung between the first bobbin 91 (package 94) and the second bobbin 92. As described above, this thread 93 corresponds to the connecting thread 93a.

[0052] Next, the control device 50 controls the lifting device 60 to lower the first housing 20 and the second housing 30 (S104). As a result, the contact roller 31 comes into contact with the second bobbin 92 of the second bobbin holder 42.

[0053] Next, the control device 50 controls the winding device 71 to perform a winding operation (S105). As a result, the tip of the winding device 71 presses against the connecting yarn 93a, thereby increasing the contact length of the yarn 93 with the second bobbin 92. In this state, the second bobbin holder 42 is driven to rotate, thereby winding the yarn 93 onto the second bobbin 92. The upper diagram in FIG. 8 shows the state after the winding device 71 has performed the winding operation. As described above, a regulating guide 75 is attached to the tip of the winding device 71. Therefore, as the winding device 71 performs the winding operation, the yarn 93 wound onto the first bobbin 91 is regulated within the yarn layer region of the first bobbin 91 in the axial direction of the package 94. In addition, the regulating guide 75 regulates the portion of the yarn 93 that is closer to the first bobbin 91, of the yarn 93 that is between the first bobbin 91 and the contact roller 31, which is distant from the contact roller 31. 8, the yarn 93 in the space (space indicated by the symbol A) between the contact roller 31 and the first bobbin 91 (package 94) closer to the first bobbin 91 in the vertical direction than the center is regulated by the regulation guide 75. This regulated the yarn 93 within the yarn layer region at a position close to the package 94.

[0054] Next, the control device 50 controls the yarn removing device 85 to remove the yarn 93 from the traverse device 21 (S106). In other words, the restriction guide 75 restricts the yarn 93 before the yarn removing device 85 completes the operation of removing the yarn 93 from the traverse device 21. The yarn removing device 85 is configured to press the yarn 93 toward the second housing 30 to displace the yarn path, thereby removing the yarn 93 from the traverse guide 23. In this embodiment, the yarn 93 is wound around the second bobbin 92, and is restricted within the yarn layer region of the first bobbin 91. Therefore, even when the yarn 93 is removed from the traverse guide 23, the yarn 93 does not fall to the outside of the package 94 in the winding width direction.

[0055] Next, the control device 50 controls the yarn shifting device 88 to shift the yarn 93 toward the yarn catching portion 92a of the second bobbin 92 (S107). As a result, the yarn 93 enters the yarn catching portion 92a and is fixed to the second bobbin 92. At this time, of the pair of regulating guides 75, the regulating guide 75 closer to the yarn catching portion 92a in the axial direction of the package 94 (the 75 on the left in FIG. 8) regulates the yarn 93 shifted toward the yarn catching portion 92a within the yarn layer region of the first bobbin 91. This prevents the yarn 93 from falling out of the package 94 during yarn shifting. Then, the control device 50 controls the cutting device 81 to cut the connecting yarn 93a (S108). As a result, the switching from the state in which the yarn 93 is wound onto the first bobbin 91 to produce the package 94 to the state in which the yarn 93 is wound onto the second bobbin 92 to produce the package 94 is completed.

[0056] Thereafter, as shown in the lower diagram of Figure 8, the control device 50 returns the yarn removal device 85 and the yarn shifting device 88 to the standby state, then returns the winding device 71 to the standby position, and resumes normal winding onto the second bobbin 92 (S109).

[0057] As described above, the yarn winding machine 1 of this embodiment includes the first bobbin holder 41, the second bobbin holder 42, the traverse device 21, the contact roller 31, the turret plate 40, the yarn removal device 85, and the restriction guide 75. The first bobbin holder 41 holds the first bobbin 91. The second bobbin holder 42 holds the second bobbin 92. The traverse device 21 traverses the yarn 93 being wound onto the first bobbin 91 or the second bobbin 92. The contact roller 31 comes into contact with the first bobbin 91, the second bobbin 92, or the package 94, and sends the yarn traversed by the traverse device 21 to the first bobbin 91, the second bobbin 92, or the package 94. The turret plate 40 changes the positions of the first bobbin holder 41 and the second bobbin holder 42 during bobbin switching, which switches from a state in which the second bobbin 92 is separated from the contact roller 31 and the first bobbin 91 or the package 94 is in contact with the contact roller 31 to wind the yarn 93 onto the first bobbin 91 to produce the package 94, to a state in which the first bobbin 91 is separated from the contact roller 31 and the second bobbin 92 or the package 94 is in contact with the contact roller 31 to wind the yarn 93 onto the second bobbin 92 to produce the package 94. During bobbin switching, the yarn removing device 85 removes the yarn 93 wound onto the first bobbin 91 from the traverse device 21. The restriction guides 75 are provided as a pair and restrict the yarn 93 wound onto the first bobbin 91 within the yarn layer region of the first bobbin 91 in the axial direction of the package 94 before the yarn removing device 85 completes the operation of removing the yarn 93 from the traverse device 21.

[0058] As a result, the yarn 93 is restricted within the yarn layer region of the first bobbin 91 by the restricting guide 75, and therefore the yarn 93 can be prevented from falling outward in the axial direction of the package 94 when the bobbin is switched.

[0059] In the yarn winding machine 1 of this embodiment, a pair of regulating guides 75 regulates the portion of the yarn 93 between the first bobbin 91, which is away from the contact roller 31, and the contact roller 31, that is closer to the first bobbin 91.

[0060] This allows the yarn 93 to be restricted at a position close to the first bobbin 91 (package 94), so that the yarn 93 can be more reliably prevented from falling outward in the axial direction of the package 94.

[0061] The yarn winding machine 1 of this embodiment is provided with a winding device 71 that acts on a yarn 93 between a first bobbin 91 separated from the contact roller 31 and the contact roller 31 to wind the yarn 93 around a second bobbin 92. A pair of regulating guides 75 are attached to the winding device 71.

[0062] This allows the pair of regulating guides 75 and the winding device 71 to be integrated, thereby simplifying the structure of the yarn winding machine 1.

[0063] In the yarn winding machine 1 of this embodiment, the yarn 93 between the first bobbin 91 separated from the contact roller 31 and the contact roller 31 is wound onto the second bobbin 92 by the winding device 71. After being regulated by the pair of regulation guides 75, the yarn removing device 85 removes the yarn from the traverse device 21.

[0064] As a result, the yarn 93 is regulated by the pair of regulation guides 75 before being removed from the traverse device 21, so that the yarn 93 can be more reliably prevented from falling outward in the axial direction of the package 94.

[0065] The yarn winding machine 1 of this embodiment includes a cutting device 81 that cuts the yarn 93 between the second bobbin 92 and the first bobbin 91 after the yarn 93 between the first bobbin 91 and the contact roller 31, which is separated from the contact roller 31, is wound onto the second bobbin 92 by the winding device 71. The cutting device 81 is attached to the winding device 71.

[0066] As a result, the cutting device 81 and the regulating guide 75 are attached to the winding device 71, so that the members that act on the connecting yarn 93a can be arranged together, resulting in a simplified structure.

[0067] In the yarn winding machine 1 of this embodiment, each of the pair of regulating guides 75 includes a wall portion 76 and an auxiliary portion 77. The wall portion 76 is provided so as to be located within the yarn layer region of the first bobbin 91, and prevents the yarn 93 wound around the first bobbin 91 from going beyond the yarn layer region. The auxiliary portion 77 is provided in a range from the wall portion 76 to the outside of the wall portion 76, at least within the yarn layer region, and guides the yarn 93 wound around the first bobbin 91 that has gone beyond the outside of the wall portion 76, back inside the wall portion 76.

[0068] As a result, the auxiliary portion 77 guides the yarn 93 to the inside of the wall portion 76, and the wall portion 76 prevents the yarn 93 from coming out of the wall portion 76. As a result, the yarn 93 can be more reliably restricted so as to be positioned within the range of the yarn layer region.

[0069] The yarn winding machine 1 of this embodiment includes a yarn directing device 88. The second bobbin 92 is formed with a slit-shaped yarn catching portion 92a for allowing the second bobbin 92 to catch the yarn 93 between the first bobbin 91 that has separated from the contact roller 31 and the contact roller 31 during bobbin switching. The yarn directing device 88 directs the yarn 93 between the first bobbin 91 that has separated from the contact roller 31 and the contact roller 31 toward the slit-shaped yarn catching portion 92a. The regulating guide 75 of the pair of regulating guides 75 that is closer to the yarn catching portion 92a regulates the yarn 93 that has been directed toward the slit-shaped yarn catching portion 92a within the yarn layer region of the first bobbin 91.

[0070] This makes it possible to prevent the yarn from dropping off from the surface of the yarn layer during yarn gathering by using one of the pair of regulating guides 75. In other words, since one regulating guide 75 has two functions, the structure can be simplified compared to a configuration in which an individual guide is provided for each function.

[0071] The preferred embodiment of the present invention has been described above, but the above configuration can be modified, for example, as follows.

[0072] In the above embodiment, the regulating guide 75 is attached to the winding device 71, but the regulating guide 75 may be attached to a separate member. In this case, an actuator is provided for moving the regulating guide 75 toward and away from the connection yarn 93a, and the regulating guide 75 can be driven independently of the winding device 71. The regulating guide 75 may immediately return to the standby position after the yarn removing device 85 removes the yarn.

[0073] The timing at which the restriction guide 75 restricts the position of the yarn 93 is not limited to the example shown in the above embodiment. For example, the restriction guide 75 may restrict the position of the yarn 93 before the contact roller 31 and the second bobbin 92 come into contact with each other.

[0074] If the restraining position of the restraining guide 75 is too close to the edge of the yarn layer region, the yarn 93 may fall outward in the axial direction from the package 94 due to the rounded edge of the yarn layer. Therefore, it is preferable that the restraining position of the restraining guide 75 is located a predetermined distance inward from the edge of the yarn layer region. Furthermore, if the restraining guide 75 is also used as a guide to prevent yarn drop during yarn pulling, if the restraining position of the restraining guide 75 is too close to the center of the yarn layer region, it will be far from the yarn catching portion 92a, making it difficult for the yarn 93 to be caught by the yarn catching portion 92a. Therefore, it is preferable to determine the restraining position of the restraining guide 75 taking the above into consideration.

[0075] The yarn catching portion 92a is not limited to being formed outside the yarn layer area, but may be formed within the yarn layer area. Even in this case, the restriction guide 75 of the present invention can be utilized because it is necessary to remove the yarn 93 from the traverse device 21. Note that if the yarn catching portion 92a is formed in the center of the yarn layer area, the yarn shifting device 88 can be omitted.

[0076] In the above embodiment, after the yarn 93 is captured by the yarn capturing unit 92a, the yarn 93 is cut using the cutting device 81. However, if the yarn 93 connected to the first bobbin 91 is torn off when the yarn 93 is captured by the yarn capturing unit 92a, the cutting device 81 may be omitted.

[0077] The flowcharts shown in the above embodiment are merely examples, and some processes may be omitted, the contents of some processes may be changed, or new processes may be added. Furthermore, the next process may be started before one process is completed. For example, after the connection yarn 93a has been guided into the restriction guide 75 at the tip of the winding device 71, the yarn removal device 85 may be operated before the winding operation of the winding device 71 is completed.

[0078] Although the traverse device 21 in the above embodiment is of a cam drum type, a different configuration may be used as long as it is possible to reciprocate the traverse guide 23 in the winding width direction. For example, a belt-type traverse device may be used instead of the traverse device 21. [Explanation of symbols]

[0079] 1 Yarn winding machine 21 Traverse device 31 Contact roller 40 Turret plate (bobbin holder moving mechanism) 41 First bobbin holder 42 Second bobbin holder 71 Wrapping device 75 Regulatory Guide 76 Wall 77 Auxiliary part 81 Cutting device 85 Thread removal device 88 Thread shifting device 91 First Bobbin 92 No. 2 bobbin 93 Thread 93a Connecting thread 94 packages

Claims

1. a first bobbin holder that holds a first bobbin; a second bobbin holder that holds the second bobbin; a traverse device that traverses the yarn wound onto the first bobbin or the second bobbin; a contact roller that contacts the first bobbin, the second bobbin, or the package and sends the yarn traversed by the traverse device to the first bobbin, the second bobbin, or the package; a bobbin holder moving mechanism that changes the positions of the first bobbin holder and the second bobbin holder during bobbin switching, which switches from a state in which a package is manufactured by winding a yarn onto the first bobbin with the second bobbin and the contact roller spaced apart and the first bobbin or package and the contact roller in contact with each other to a state in which a package is manufactured by winding a yarn onto the second bobbin with the first bobbin and the contact roller spaced apart and the second bobbin or package and the contact roller in contact with each other; a yarn removing device that removes the yarn wound on the first bobbin from the traverse device when the bobbin is switched; restriction guides provided to correspond to both sides of the yarn layer area of ​​the first bobbin, and which restrict the yarn wound on the first bobbin to within the yarn layer area of ​​the first bobbin in the axial direction of the package before the yarn removing device completes the operation of removing the yarn from the traverse device; Equipped with The regulation guide is a wall portion provided to be positioned within the yarn layer region of the first bobbin and preventing the yarn wound on the first bobbin from going beyond the yarn layer region; an auxiliary portion provided in a range from the wall portion to at least a yarn layer region outside the wall portion, and configured to guide the yarn wound on the first bobbin beyond the outside of the wall portion to the inside of the wall portion; A yarn winding machine comprising:

2. The yarn winding machine according to claim 1, the regulating guide regulates a portion of the yarn between the first bobbin, which is separated from the contact roller, and the contact roller, the portion of the yarn being closer to the first bobbin.

3. The yarn winding machine according to claim 1 or 2, a winding device that presses the yarn between the first bobbin separated from the contact roller and the contact roller in a direction including a component perpendicular to the axial direction of the first bobbin, and winds the yarn around the second bobbin; The yarn winding machine, wherein the regulating guide is attached to the winding device.

4. The yarn winding machine according to claim 3, the yarn between the first bobbin separated from the contact roller and the contact roller is wound onto the second bobbin by the winding device; The yarn winding machine is characterized in that the yarn removing device removes the yarn from the traverse device after the yarn has been restricted by the restriction guide.

5. The yarn winding machine according to claim 3 or 4, a cutting device that cuts the yarn between the second bobbin and the first bobbin after the yarn between the first bobbin separated from the contact roller and the contact roller is wound onto the second bobbin by the winding device, A yarn winding machine, characterized in that the cutting device is attached to the winding device.

6. The yarn winding machine according to any one of claims 1 to 5, Equipped with a thread guide device, The second bobbin is provided with a slit-shaped yarn catching portion for catching the yarn between the first bobbin separated from the contact roller and the contact roller at the time of bobbin switching, the yarn shifting device shifts the yarn between the first bobbin separated from the contact roller and the contact roller toward the slit-shaped yarn catching portion, The yarn winding machine is characterized in that the regulating guide closer to the yarn catching portion regulating the yarn gathered toward the slit-shaped yarn catching portion within the yarn layer area of ​​the first bobbin.

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