Yarn take-up machine

Abstract

The yarn winder of the present invention suppresses the occurrence of a problem of package formation caused by a change in the relative position of the traverse region and the tube in a prescribed direction in which the tube rest extends. A spinning draw-off machine (1) winds a plurality of yarns (Y) onto a plurality of tubes (B) to form a plurality of packages (P). The spinning draw-off machine (1) is provided with a tube rest (24) arranged so as to extend in a prescribed direction, which arranges and holds the plurality of tubes (B) in a row in the prescribed direction, a plurality of traverse guides (32) for reciprocating the plurality of yarns (Y) transversely along the prescribed direction, a traverse device (22) configured to include at least one of the plurality of traverse guides (32) and drive the at least one traverse guide (32), and a movement drive section (50) that moves the traverse device (22) at least in the prescribed direction.

Description

Technical Field

[0001] This invention relates to a yarn winding machine. Background Technology

[0002] Patent documents 1 and 2 disclose yarn winding machines that wind multiple yarns onto multiple bobbins to form multiple packages. More specifically, the yarn winding machine has a bobbin support and multiple traverse devices (hereinafter referred to as "traverse devices"). The bobbin support extends along a predetermined direction, arranging and holding multiple bobbins in the predetermined direction. Each of the multiple traverse devices has a traverse guide for reciprocating laterally along the predetermined direction and is provided corresponding to each of the multiple bobbins. By simultaneously rotating the multiple bobbins using the bobbin support and by using the multiple traverse devices to reciprocate laterally along the predetermined direction, the yarn is simultaneously wound onto the multiple bobbins. In recent years, in order to hold more bobbins at once, the bobbin support has been lengthened. This has led to various problems, and countermeasures to solve these problems are being researched.

[0003] The following is the first example of a problem and its countermeasure. The aforementioned yarn take-up mechanism uses a contact roller extending approximately parallel to the bobbin support to apply contact pressure to the outer circumferential surface of the package to shape it. Furthermore, the bobbin support is cantilevered and supported approximately horizontally. In this structure, as the package thickens during yarn take-up (the weight of the package increases), the bobbin support gradually bends downwards due to the weight of the package. The amount of bending of the bobbin support is greater towards the top end in a predetermined direction. If this causes variations in the parallelism between the bobbin support and the contact roller, there is a concern that the contact pressure will be uneven among the multiple bobbins, and the quality will be uneven among the packages. Therefore, the yarn take-up mechanism described in Patent Document 1 utilizes a tilting mechanism (angle adjustment unit) that actively tilts the contact roller to maintain the contact roller and bobbin support at approximately parallel positions.

[0004] The following is a second example revealing the problem and its countermeasure. As disclosed in Patent Document 2, a slit for hooking the yarn is formed at the end of each bobbin in a predetermined direction. Furthermore, Patent Document 2 discloses a yarn-hooking mechanism with a yarn guide for hooking the yarn into the slit. However, if the number of bobbins held on the bobbin support increases, there is a possibility that the position of the slit may change significantly due to errors in the bobbin length, raising concerns about yarn-hooking failure. Therefore, the yarn-hooking mechanism is configured to adjust the position of the yarn guide in a predetermined direction. This suppresses the occurrence of yarn-hooking failure.

[0005] Prior art literature

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2012-158436

[0008] Patent Document 2: Japanese Patent Application Publication No. 2019-214474

[0009] Summary of the invention

[0010] The problem that the invention aims to solve

[0011] While addressing the aforementioned problems arising from the elongation of the bobbin support, the change in the relationship between the yarn movement range (transverse movement area) and the bobbin's position caused by the traverse guide's drive has not been considered a problem until now, nor was it deemed necessary to address it specifically. However, the inventors of this application have discovered that if the bobbin support is further elongated, problems caused by the traverse movement area shifting relative to the bobbin in a predetermined direction may emerge. That is, if the elongation of the bobbin support causes the aforementioned change in positional relationship, the yarn take-up position on the bobbin changes in the predetermined direction. This may lead to problems such as package shape disorder. Summary of the Invention

[0012] The purpose of this invention is to suppress roll formation problems caused by variations in the relative position of the lateral movement region and the bobbin in a predetermined direction of extension of the bobbin support.

[0013] Methods for solving problems

[0014] The yarn winding machine of the first embodiment is a yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages. It is characterized by comprising: a bobbin support that extends along a predetermined direction and arranges and holds the multiple bobbins along the predetermined direction; multiple traverse yarn guides for reciprocating laterally along the predetermined direction; a traverse device that includes at least one of the multiple traverse yarn guides and drives the at least one traverse yarn guide; and a movement drive unit that moves the traverse device at least along the predetermined direction.

[0015] In this invention, by using a moving drive unit to move the traverse device at least in a predetermined direction, the yarn movement range (traverse region) caused by the driving of the traverse yarn guide included in the traverse device can be moved in the predetermined direction. Therefore, changes in the relative position of the traverse region and the bobbin can be suppressed in the predetermined direction. Thus, package formation problems caused by changes in the relative position of the traverse region and the bobbin can be suppressed.

[0016] The yarn take-up machine of the second embodiment is characterized in that, in the first embodiment, the traversing region of the at least one traversing yarn guide is fixed relative to the traversing device.

[0017] In structures where the lateral movement area is fixed relative to the lateral movement device, the movement drive unit is particularly effective when arranged as in this invention.

[0018] The yarn take-up machine of the third embodiment is characterized in that, in the second embodiment, each of the plurality of traverse yarn guides is configured to: move each of the plurality of yarns laterally reciprocally by means of two blade yarn guides driven to rotate in opposite directions, or be mounted on an arm driven by a swing.

[0019] Specific examples of structures where the traverse region is fixed relative to the traverse device include: each traverse yarn guide having two blade yarn guides (blade type), or being mounted on an arm (arm type). In these structures, the movement drive unit is particularly effective when arranged as in this invention.

[0020] The yarn take-up machine of the fourth embodiment is characterized in that, in any one of the first to third embodiments, the traverse device includes all of the plurality of traverse yarn guides.

[0021] In this invention, the entire traverse region of the traverse yarn guide can be moved using a single moving drive unit. Therefore, compared to structures requiring multiple moving drive units, the construction of the yarn take-up machine can be simplified.

[0022] The yarn winding machine of the fifth embodiment is characterized in that, in any one of the first to fourth embodiments, the moving drive unit has a linear actuator configured to adjust the position of the traverse device in the predetermined direction.

[0023] Because the offset between the traverse region and the tube in the specified direction is small, the position of the traverse device needs to be finely adjusted. In this invention, compared with structures that simply use propulsion to move the traverse device (such as cylinders), the position of the traverse device can be adjusted precisely.

[0024] The yarn winding machine according to the sixth embodiment is characterized in that, in any one of the first to fifth embodiments, the bobbin support is cantilevered and extends at least in the horizontal direction; the yarn winding machine includes: a contact roller arranged at least in the predetermined direction to apply contact pressure to the plurality of packages, and an angle adjustment section configured to adjust the angle of the traverse device and the contact roller relative to the horizontal direction.

[0025] In this structure, by using an angle adjustment unit to adjust the angle between the traverse device and the contact roller, uneven contact pressure between rolls caused by the thickening of multiple rolls during winding is suppressed. However, simply adjusting the angle raises concerns that the traverse area may shift in a predetermined direction relative to the bobbin, potentially leading to roll shape breakage. In this regard, the present invention effectively suppresses roll shape breakage because it utilizes a movement drive unit to suppress the shift of the traverse area relative to the bobbin in a predetermined direction.

[0026] The yarn take-up machine of the seventh embodiment is characterized in that, in the sixth embodiment, it includes a support member that supports the traverse device and the contact roller and is configured to be movable by the angle adjustment unit; the movement drive unit is configured to move and drive the support member at least along the predetermined direction.

[0027] In this invention, the movement drive unit, like the angle adjustment unit, is configured to move the support member. Therefore, the design is simplified compared to a yarn take-up mechanism that moves the traverse device relative to the support member.

[0028] The yarn winding machine according to the eighth embodiment is characterized in that, in any one of the first to seventh embodiments, it includes a first control unit; the first control unit controls the movement drive unit during the winding operation of winding the plurality of yarns onto the plurality of bobbins respectively.

[0029] In this invention, the position of the traverse region is adjusted during the winding process. Therefore, the shape of the roll can be effectively shaped, or the shape of the roll can be freely changed to a certain extent.

[0030] The yarn winding machine of the ninth embodiment is characterized in that, in any one of the first to eighth embodiments, it includes a position information acquisition unit that acquires position information relating to the position of a predetermined portion of the plurality of bobbins in a predetermined direction.

[0031] In this invention, the offset of the lateral movement region in a specified direction caused by errors in the length of the bobbin can be determined based on position information. Therefore, this position information can be used to compensate for the offset of the lateral movement region relative to the bobbin in the specified direction.

[0032] The yarn winding machine of the 10th embodiment is characterized in that, in the 9th embodiment, it includes a second control unit; the second control unit controls the movement drive unit based on the position information before the winding action of winding the multiple yarns onto the multiple bobbins begins.

[0033] The positional offset of the traverse zone relative to the bobbin caused by errors in bobbin length can be known in advance before the winding operation begins. Therefore, the present invention can effectively compensate for such positional offsets.

[0034] The yarn take-up machine of the 11th embodiment is characterized in that, in any one of the 1st to 10th embodiments, it includes a third control unit; the third control unit controls the movement drive unit in such a way that the positional offset between the traverse region of the at least one traverse guide and the bobbin in the predetermined direction is reduced.

[0035] This invention is particularly effective when it is desired to make the shape of the roll symmetrical in a specified direction.

[0036] The yarn winding machine of the 12th embodiment is characterized in that, in any one of the 1st to 11th embodiments, a slit for hooking the yarn is formed at the end of each bobbin held by the bobbin support on one side of the predetermined direction; and it includes a fourth control unit; the fourth control unit controls the movement drive unit to move the traverse device at least to the one side of the predetermined direction during the winding operation of winding the plurality of yarns onto the plurality of bobbins respectively.

[0037] Typically, the area where the wound yarn is wound on the outer circumference of the bobbin is closer to the other side (the side without a slit) in a specified direction compared to the side with the slit. In other words, the area (blank) on the outer circumference of the bobbin without wound yarn is narrower on the other side of the specified direction. That is, the blank is wider on the side with the specified direction of the bobbin and narrower on the other side. Furthermore, as the package winds thicker, the tension of the yarn wound on the package causes a force to be applied radially inward. As a result, the radially inward portion of the package tends to bulge in the specified direction. Therefore, compared to the side with the specified direction of the bobbin, the risk of yarn being squeezed out is greater on the other side of the specified direction.

[0038] In this invention, during the winding operation, the traverse area is intentionally moved to one side in a predetermined direction. This allows for a greater bulge on the end face of the bobbin on the side with the wider blank space in the predetermined direction of the winding, thereby correspondingly reducing the bulge on the end face of the bobbin on the other side in the predetermined direction of the winding. Therefore, since the narrowing of the blank space on the other side of the bobbin in the predetermined direction can be suppressed, the risk of yarn being squeezed out of the bobbin, etc., can be reduced.

[0039] The yarn winding machine of the 13th embodiment is characterized in that, in the 12th embodiment, the 4th control unit moves the traverse device to one direction side in the predetermined direction during the winding operation, and then moves it to another direction side in the predetermined direction.

[0040] During the winding process, although it is possible to move the traverse device only in one direction of the specified direction, there is a concern that the radially outer portion of the roll may become severely skewed in that direction. This could lead to shape loss of the roll. In this invention, it is possible to suppress narrowing of the blank on the other side of the specified direction of the bobbin while simultaneously suppressing the skewness of the radially outer portion of the roll in one direction of the specified direction. Attached Figure Description

[0041] Figure 1 This is a side view of the spinning traction machine involved in this embodiment.

[0042] Figure 2 This is the front view of the winding device.

[0043] Figure 3 (a) and (b) are explanatory diagrams showing the angle adjustment of the contact roller.

[0044] Figure 4 (a) to (d) are reference diagrams that schematically illustrate the reason for the offset of the lateral movement region and the cylinder in the specified direction.

[0045] Figure 5 An explanatory diagram showing the error in the length of the tube.

[0046] Figure 6 This is an explanatory diagram showing the motion drive unit.

[0047] Figure 7 Figures (a) to (c) are explanatory diagrams showing control examples of the moving drive unit.

[0048] Figure 8 (a) to (d) are reference diagrams showing the shape of the roll.

[0049] Figure 9 (a) and (b) are explanatory diagrams showing the spinning traction machine involved in the modified example.

[0050] Explanation of reference numerals in the attached figures

[0051] 1—Spinning traction machine (yarn take-up machine); 22—Traverse device; 24—Bottle support; 25—Contact roller; 26—Support component; 27—Angle adjustment unit; 28—Control unit (position information acquisition unit, first control unit, second control unit, third control unit, fourth control unit); 32—Traverse yarn guide; 34—Blade yarn guide; 50—Movement drive unit; 51—Ball screw mechanism (linear actuator); 61—Arm; B—Bottle; P—Packet; R—Traverse area; S—Slit; Y—Yarn Detailed Implementation

[0052] The embodiments of the present invention will be described below. Figure 1 The left and right directions of the paper are taken as the front and back directions. Furthermore, the direction in which the weight is applied is taken as the up and down direction (vertical direction), and the direction perpendicular to both the front and back and up and down directions (the direction perpendicular to the paper) is taken as the left and right directions.

[0053] (Brief structure of a spinning traction machine)

[0054] Reference Figure 1 The spinning traction machine 1 (the yarn winding machine of the present invention) involved in this embodiment will be described. Figure 1 This is a side view of the spinning traction machine 1. The spinning traction machine 1 includes a traction section 3 that draws the yarn Y spun from the spinning device 2 and a take-up device 4 that winds the yarn Y drawn by the traction section 3 onto multiple bobbins B.

[0055] The traction unit 3 has a first guide roller 11 and a second guide roller 12. The traction unit 3 is configured to use the first guide roller 11 and the second guide roller 12 to draw the yarn Y spun from the spinning device 2 and transport it to the take-up device 4. The first guide roller 11 is a roller whose rotation axis is approximately parallel to the left-right direction. The first guide roller 11 is positioned below the spinning device 2 and above the front end of the take-up device 4. The first guide roller 11 is driven to rotate by an electric motor (not shown). A yarn limiting guide 13 is positioned immediately above the first guide roller 11. The yarn limiting guide 13 is, for example, a well-known comb-shaped yarn guide. The yarn limiting guide 13 is configured to limit the spacing between adjacent yarns Y to a predetermined value.

[0056] The second guide roller 12 is a roller whose rotation axis is approximately parallel to the left-right direction. The second guide roller 12 is positioned above and behind the first guide roller 11. The second guide roller 12 is driven to rotate by an electric motor (not shown). The second guide roller 12 is movably supported on a guide rail 14. The guide rail 14 extends obliquely upwards and backwards. The second guide roller 12 is configured to move along the guide rail 14 using a moving mechanism (not shown). Thus, the second guide roller 12 can move between its position during yarn Y-axis bobbin winding (refer to solid lines) and its position near the first guide roller 11 during yarn hanging operations (refer to dashed lines).

[0057] (Winding device)

[0058] Reference Figure 1 and Figure 2 The structure of the winding device 4 will be described. Figure 2 This is a front view of the take-up device 4. The take-up device 4 includes a body 20, multiple traverse pivot yarn guides 21, a traverse device 22, a turntable 23, two bobbin supports 24, a contact roller 25, a support component 26, an angle adjustment unit 27, and a control unit 28. The take-up device 4 is configured such that the traverse device 22 causes multiple yarns Y fed from the traction unit 3 to reciprocate laterally in the front-to-back direction, and winds the multiple yarns Y onto multiple bobbins B held on the bobbin supports 24, forming multiple packages P. The action of winding the yarns Y onto the bobbins B is referred to hereafter as the take-up action.

[0059] like Figure 1 As shown, the machine body 20 has a main body 20a vertically disposed at the rear of the winding device 4 and a frame 20b fixed to the upper part of the main body 20a and extending forward. A turntable 23 and the like are supported on the main body 20a. The frame 20b is, for example, a hollow columnar component. A contact roller 25 extending in the front-rear direction (details will be described later) is supported on the frame 20b via a support member 26 and an angle adjustment part 27.

[0060] Multiple lateral fulcrum yarn guides 21 serve as fulcrums for the multiple yarns Y as they are moved laterally and reciprocally. Each of the multiple lateral fulcrum yarn guides 21 is arranged corresponding to a different yarn Y. The multiple lateral fulcrum yarn guides 21 are arranged along the front-to-back direction.

[0061] The traverse mechanism 22 is configured to cause multiple yarns Y to move laterally back and forth in the front-to-back direction. The traverse mechanism 22 includes a housing 31, multiple traverse guides 32 respectively arranged corresponding to the multiple yarns Y, and a traverse motor 33 (see reference). Figure 2The traverse device 22 is, for example, the blade-type traverse device described in Japanese Patent Application Publication No. 2019-214474 (the blade yarn guide described in the above publication is equivalent to the traverse yarn guide 32 of this embodiment). Each of the plurality of traverse yarn guides 32 has, for example, two blade yarn guides 34 (see...). Figure 1 , Figure 1 Only one blade guide 34 is shown for each traverse yarn guide 32. The two blade guides 34 are configured to rotate in opposite directions when viewed from a predetermined rotation axis. Each traverse yarn guide 32 is configured to cause each yarn Y to reciprocate laterally using the two blade guides 34, which are rotated by the traverse motor 33. In this structure, the range of movement (traverse region) of the yarn Y in the front-to-back direction caused by the driving of the multiple traverse yarn guides 32 is fixed relative to the housing 31. In other words, the center position of the traverse region of each traverse yarn guide 32 does not move relative to the traverse device 22. Furthermore, the axial length of the traverse region is fixed. In this embodiment, all the traverse yarn guides 32 are included in the traverse device 22. The traverse motor 33 is a common drive source for the multiple traverse yarn guides 32. The multiple traverse yarn guides 32 are driven together by the traverse motor 33 at least in the front-to-back direction. As a result, the yarns Y hooked on each lateral yarn guide 32 are moved laterally back and forth with each lateral fulcrum yarn guide 21 as the fulcrum.

[0062] The turntable 23 is a circular plate-shaped component whose axis is approximately parallel to the front-rear direction. The turntable 23 is rotatably supported on the main body 20a. The turntable 23 is driven by a turntable motor (not shown). The turntable 23 cantileverly supports two bobbin supports 24. The two bobbin supports 24 are moved by rotating the turntable 23 around a rotation axis approximately parallel to the front-rear direction. The turntable 23 is configured to allow the positions of the two bobbin supports 24 to be interchanged. Therefore, while winding yarn onto a bobbin B mounted on one bobbin support 24, the bobbin B on the other bobbin support 24 can be replaced. Furthermore, the turntable 23 is configured to rotate as the amount of yarn Y wound increases during the winding operation (see reference). Figure 2 (arrow).

[0063] Two bobbin supports 24 are configured to each hold a plurality of bobbins B. The two bobbin supports 24 are rotatably supported on a turntable 23 supported on the machine body 20a. The two bobbin supports 24 are cantilevered by the turntable 23. The two bobbin supports 24 are arranged such that they are point-symmetrical about each other across the center point of the turntable 23 when viewed from the front-rear direction. That is, for example, when one bobbin support 24 is at the uppermost side, the other bobbin support 24 is at the lowermost side. The two bobbin supports 24 extend forward from the turntable 23. The axial direction of the extension of the two bobbin supports 24 (hereinafter referred to as the "prescribed direction") is approximately parallel to the front-rear direction. The prescribed direction varies slightly during the winding operation, as described later. A plurality of bobbins B, individually arranged for multiple yarns Y, are loaded axially on each bobbin support 24. In this embodiment, the number of bobbins B that can be loaded on one bobbin support 24 is 16 (see reference). Figure 1 (The number is not limited to this.) The two bobbin supports 24 are each driven by a separate winding motor (not shown). The two bobbin supports 24 are located below the traverse device 22.

[0064] During the process of winding yarn Y onto bobbin B mounted on a bobbin holder 24 to form package P, the weight of package P increases as the amount of yarn Y increases (package P becomes thicker). Furthermore, as described above, the bobbin holder 24 is cantilevered. Therefore, after the winding operation begins, the posture of the bobbin holder 24 is maintained at approximately horizontal (see reference). Figure 3 (a) However, as the coil P thickens, the bobbin support 24 bends downward under the weight of the coil P (see reference). Figure 3 (b)). At this time, the bending amount of the tube support 24 is greater towards the axial top end of the tube support 24.

[0065] The contact roller 25 is positioned above the upper bobbin support 24. The axial direction of the contact roller 25 is approximately parallel to the front-to-back direction. The contact roller 25 is configured to apply contact pressure to the surfaces of multiple rolls P supported on the upper bobbin support 24, thereby shaping the rolls P.

[0066] The support member 26 is configured to support the contact roller 25 and the traverse device 22. For example... Figure 1 and Figure 2As shown, the support member 26 is mounted on the frame 20b in a swingable manner, for example. The support member 26 has, for example, a swing shaft 41, a pair of arms 42, and a roller support shaft 43. The swing shaft 41 extends generally in the front-rear direction. Arms 42 are fixed at both ends of the swing shaft 41 in the front-rear direction. The swing shaft 41 is configured such that the pair of arms 42 and the roller support shaft 43 swing about the direction in which the swing shaft 41 extends. The swing shaft 41 is rotatably supported by a mounting member 44 mounted at the front end of the frame 20b and a sliding body 46 (described later) disposed near the rear end of the frame 20b. The mounting member 44 rotatably supports the swing shaft 41. Furthermore, the mounting member 44 supports the swing shaft 41 with a shaft member (not shown) so that it can swing about the mounting member 44 as the swing shaft center in the up-down direction. Thus, the angle of the swing shaft 41 relative to the horizontal direction can be adjusted by the angle adjustment part 27 (details described later). The pair of arms 42 are fixed at both ends of the swing shaft 41 in the front-rear direction. A pair of arms 42 extend from the swing shaft 41 in a direction substantially perpendicular to the front-back direction. The housing 31 of the traversing device 22 is fixed at the middle of the pair of arms 42. A roller support shaft 43 is fixed at the end of the pair of arms 42 on the side opposite to the swing shaft 41. The roller support shaft 43 is a shaft arranged substantially parallel to the swing shaft 41. The roller support shaft 43 supports the contact roller 25 so that it can rotate.

[0067] The angle adjustment unit 27 is configured to allow the angle of the support member 26 relative to the horizontal direction to change. The angle adjustment unit 27 includes, for example, a ball screw mechanism 45. The ball screw mechanism 45 includes a slider 46, which is movable in the vertical direction. The slider 46 supports the rear end of the swing shaft 41 so that it can rotate. By using such a ball screw mechanism 45 to move the rear end of the swing shaft 41 in the vertical direction, the angle of the swing shaft 41 relative to the horizontal direction can be changed. This change in the angle of the support member 26 relative to the horizontal direction results in a change in the angles of the contact roller 25 and the traverse device 22 relative to the horizontal direction. Therefore, the angles of the contact roller 25 and the traverse device 22 can be made to follow the bending of the bobbin support 24 caused by the thickening of the winding of the roll P.

[0068] The control unit 28 includes a CPU, ROM, and RAM. The control unit 28 uses the CPU to control various components according to a program stored in the ROM. Specifically, the control unit 28 controls the turntable motor (not shown), the traverse motor 33, and the ball screw mechanism 45. The control unit 28 functions as the first, second, third, and fourth control units of this invention.

[0069] In the winding device 4 with the above structure, when the upper bobbin support 24 is driven to rotate, the yarn Y, which is laterally reciprocated by the lateral yarn guide 32, is wound onto the bobbin B to form a package P. During the formation of the package P, contact pressure is applied by the contact roller 25 contacting the surface of the package P to shape the package P. In addition, as the yarn Y is wound onto the bobbin B, the diameter of the package P increases (the package P thickens), and the turntable 23 is moved along... Figure 2 The arrow rotates in the direction of rotation. This increases the distance between the bobbin support 24, which carries the bobbin B on which the yarn Y is being wound, and the contact roller 25. Since the contact roller 25 can oscillate around the swing axis 41, it oscillates in sync with the movements of the bobbin support 24 and the package P. This ensures contact between the contact roller 25 and the package P.

[0070] Furthermore, as described above, after the winding action begins, the posture of the tube support 24 is maintained at approximately horizontal (see reference). Figure 3 (a)). Furthermore, as the coil P thickens, the bobbin support 24 bends downwards under the weight of the coil P (see reference). Figure 3 (b) In other words, as time progresses after the start of the take-up operation, the axial direction (prescribed direction) of the bobbin support 24 changes relative to the horizontal direction. In this state, if the angle formed between the bobbin support 24 and the contact roller 25 changes, the contact pressure generated by the contact roller 25 becomes uneven among the multiple packages P, resulting in uneven quality among the multiple packages P. To solve this problem, the control unit 28 controls the angle adjustment unit 27 to change the angle of the support member 26 relative to the horizontal direction during the take-up operation. As a result, the bobbin support 24 and the contact roller 25 are kept approximately parallel. Furthermore, as described above, the traverse device 22 is supported on the support member 26 together with the contact roller 25. Therefore, even if the bobbin support 24 is tilted from the horizontal direction, the direction of movement of the yarn Y caused by the drive of the traverse guide 32 can be made to be approximately consistent with the prescribed direction. Therefore, problems such as the take-up angle (winding angle) deviating from the target value when the yarn Y is wound onto the bobbin B can be suppressed.

[0071] However, the inventors of this application have discovered that, in the above structure, as the tube support 24 becomes longer, new problems emerge. See below for details. Figure 4 (a)~(d) and Figure 5 To explain in detail. Figure 4 (a) is an explanatory diagram showing the positional relationship between the bobbin B and the moving area (traversing area R) driven by the accompanying traversing yarn guide 32 of the yarn Y before the start of the winding action. Figure 4 (b) is an explanatory diagram showing the positional relationship between the bobbin B and the traverse region R after a specified time has elapsed since the start of the winding action. Figure 4 (c) is for further schematic representation Figure 4The diagram showing the above positional relationships in (a). Figure 4 (d) is for further schematic representation Figure 4 The diagram of the above positional relationships in (b). Figure 5 This is an explanatory diagram relating to the error in the length of the tube B mounted on the tube support 24. Figure 4 In (a) to (d), the side facing forward is designated as one direction side in the prescribed direction. And the side facing backward is designated as the other direction side in the prescribed direction.

[0072] First, the problem caused by the bending of the bobbin support 24 as described above will be explained. Before the winding operation begins, the bobbin B and the lateral movement area R have a predetermined positional relationship in the front-to-back direction (see reference). Figure 4 (a) Thus, after the take-up action begins, the yarn Y is wound onto a predetermined area on the outer circumference of the bobbin B in a predetermined direction. However, when the package P thickens and causes the bobbin support 24 to bend (when the predetermined direction is tilted relative to the front-back direction), even when the angles of the contact roller 25 and the traverse device 22 are adjusted, the traverse area R gradually shifts to the other side in the predetermined direction relative to the bobbin B. The inventors of this application have discovered that the shape of the package P is thus unexpectedly skewed to the other side in the predetermined direction (see reference). Figure 4 (b)

[0073] Reference Figure 4 (c) and (d) further illustrate this phenomenon schematically. A simple example is given below. Assume the aforementioned swing shaft 41 is configured along line segment L1. Let the designated point at the front end of the swing shaft 41 be point P1a. Assume the designated point at the rear end of the swing shaft 41 is the rear end of line segment L1, and let the point at the rear end of line segment L1 be point P1b. Furthermore, assume the bobbin support 24 is configured along line segment L2, which is positioned below line segment L1. Let the designated point at the front end (top end) of the bobbin support 24 be point P2a. Let the designated point at the rear end (root end) of the bobbin support 24 be point P2b. For simplicity, assume the length of line segment L1 is the same as the length of line segment L2. Before winding begins (refer to...) Figure 4 (c) In the forward and backward direction, line segments L1 and L2 are in the same position. Furthermore, the specified direction is parallel to the forward and backward direction. In this case, point P1a and point P2a are in the same position in the specified direction (refer to...). Figure 4 (c) double-dotted line). Next, when the coil P thickens and causes the bobbin support 24 to bend, it can be assumed that line segment L2 rotates downward by a specified angle with respect to point P2b. At this time, the specified direction is tilted by a specified angle relative to the front-back direction. In this state, when focusing on the specified direction, point P2a is offset to one side relative to point P1a (refer to...). Figure 4(d) The double-dotted line. In this case, even if the angle of line segment L1 changes in a corresponding manner to the angle of line segment L2, this alone cannot make the position of line segment L1 in the specified direction consistent with the position of line segment L2 in the specified direction. Whether assuming that line segment L1 is rotated around point P1a or assuming that line segment L1 is rotated around point P1b, such positional offset cannot be eliminated.

[0074] Furthermore, although detailed illustrations are omitted, the orientation of the bobbin B mounted on the bobbin support 24 can cause more serious problems. Typically, a slit S for hooking the yarn Y is formed at one end of the bobbin B along its axial direction (see reference). Figure 4 (The dashed lines in (a) and (b)). Furthermore, the transverse movement region R is typically positioned axially on the side of the bobbin B closest to the side where the slit S is not formed. That is, on the side of the bobbin B where the slit S is not formed, the blank portion without wound yarn is narrow. Moreover, as the package P typically thickens, the tension of the yarn Y wound on the package P causes a force to be applied radially inward towards the package P. Consequently, the radially inward portion of the package P tends to bulge in a predetermined direction. Therefore, when the bobbin B is mounted on the bobbin support 24 with the slit S positioned on one side of the predetermined direction, the risk of the yarn Y being easily squeezed out of the bobbin B on the other side of the predetermined direction of the bobbin B increases.

[0075] Next, the problem caused by the error in the axial length of the bobbin B mounted on the bobbin support 24 will be explained. Normally, the error in the axial length of each bobbin B is small. However, if the bobbin support 24 is lengthened and the number of bobbins B mounted on it at one time increases, the error correspondingly increases. For example, imagine... Figure 5 The shorter tube B (tube B1) is mounted on the tube support 24 as shown on the upper side of the paper, and like... Figure 5 The case where a relatively long bobbin B (bobbin B2) is mounted on the bobbin support 24, as shown on the lower side of the paper. In this case, the difference dLt between the total length of the multiple bobbins B1 (total length) and the total length of the multiple bobbins B2 becomes larger as the number of bobbins B mounted on the bobbin support 24 increases. In such a case, it is not possible to properly maintain the bobbin B relative to the lateral movement area R (refer to...). Figure 4 The positional relationship of (a) and (b) in the specified direction raises concerns about potential adverse conditions in the formation of roll P.

[0076] In order to suppress the formation problem of package P caused by the change in the relative position of the lateral movement area R and the bobbin B in the specified direction, the winding device 4 of the spinning traction machine 1 in this embodiment has a moving drive unit 50 as follows.

[0077] (Mobile Drive Department)

[0078] Reference Figure 6 The structure of the mobile drive unit 50 will be described. Figure 6 The components housed within the main body 20a are shown in the diagram. The movement drive unit 50 is a component that moves the entire traverse device 22 at least along a predetermined direction. An example of the movement drive unit 50 will be described below. The movement drive unit 50 includes, for example, a ball screw mechanism 51 (the linear actuator of the present invention). The ball screw mechanism 51 is configured to allow adjustment of the position of the traverse device 22 in a predetermined direction. The ball screw mechanism 51 is connected to the rear end of the swing shaft 41 of the support member 26. The ball screw mechanism 51 includes a movement motor 52, a lead screw shaft 53, and a slider 54.

[0079] The movable motor 52 is configured as a rotary drive lead screw 53. The movable motor 52 is, for example, a well-known servo motor or stepper motor. The lead screw 53 is fixed to the rotation axis of the movable motor 52. The movable motor 52 is connected to the slider 46 of the angle adjustment unit 27 via, for example, a connecting member 55. Therefore, the position of the movable motor 52 relative to the slider 46 is fixed. Thus, the movable motor 52 can move in accordance with the up-and-down movement of the slider 46 (i.e., the angle change of the swing shaft 41). The movable motor 52 is electrically connected to the control unit 28 and is driven and controlled by the control unit.

[0080] The lead screw shaft 53 is a component used to move the slider 54 at least in a predetermined direction by rotation. The extending direction of the lead screw shaft 53 is substantially parallel to the extending direction of the swing shaft 41 of the support member 26. An external thread is formed on the lead screw shaft 53. The lead screw shaft 53 is screwed together with the slider 54. The slider 54 is a component used to move the support member 26 at least in a predetermined direction by moving along the extending direction of the lead screw shaft 53. An internal thread is formed on the slider 54. The slider 54 is screwed together with the lead screw shaft 53. The slider 54 is mounted on the rear end of the swing shaft 41 of the support member 26. Thus, the slider 54 can move in accordance with the angular change of the swing shaft 41. As described above, the ball screw mechanism 51 as a whole follows the angular change of the swing shaft 41 (i.e., the angular change of the support member 26). Therefore, it is avoided to apply unsuitable force to the ball screw mechanism 51.

[0081] Furthermore, in order to enable the support member 26 to move at least in a predetermined direction, the winding device 4 can also be configured as follows. First, the slider 46 of the angle adjustment part 27 supports the rear end of the swing shaft 41 so that it can slide in a predetermined direction. Specifically, a through hole 46a is formed on the slider 46, extending axially along the swing shaft 41, and the swing shaft 41 is inserted into the through hole 46a. Similarly, the mounting member 44 described above (see...) Figure 1 (etc.) support the front end of the swing shaft 41 so that it can slide in a specified direction.

[0082] In the movable drive unit 50 with the above structure, if the lead screw 53 is driven to rotate by the movable motor 52, the slider 54 moves along the extending direction of the lead screw 53 (see reference). Figure 6 (The arrow indicates this). Thus, the entire support member 26, including the swing shaft 41, moves integrally with the slider 54 along the extending direction of the swing shaft 41. As a result, the traversing device 22 mounted on the support member 26 moves as a whole at least in a predetermined direction. When the extending directions of the lead screw 53 and the swing shaft 41 are substantially parallel to the axial direction (predetermined direction) of the bobbin support 24, the traversing device 22 moves along the predetermined direction. Furthermore, in this embodiment, the contact roller 25 also moves at least in the predetermined direction along with the movement of the support member 26.

[0083] (Position control of the lateral movement area)

[0084] The following reference Figure 7 (a) to (c) and Figure 8 Sections (a) to (d) will explain the control of the movement drive unit 50 performed by the control unit 28 (i.e., the position control of the lateral movement area R mentioned above). Figure 7 Figures (a) to (c) are explanatory diagrams showing a control example of the movement drive unit 50 performed by the control unit 28 (more specifically, the movement of the lateral movement area R). Figure 8 (a) is a side view of roll P. Figure 8 (b) is Figure 8 A cross-sectional view of roll P as shown in (a). Figure 8 (c) is a cross-sectional view of the roll P involved in the second control example (1) described later. Figure 8 (d) is a cross-sectional view of the roll P involved in the second control example (2) described later.

[0085] First, the control performed before the winding of yarn Y into multiple bobbins B begins (before the winding operation starts) will be explained. Before the winding operation begins, the control unit 28 controls the movement drive unit 50 based on information about the total length of the multiple bobbins B, adjusting the position of the traverse region R at least in a predetermined direction (see reference). Figure 7(a)). One example of the adjustment method is described below. Before the winding operation begins, the control unit 28 acquires information about the total length of the plurality of bobbins B by some means or method. This information can be input into the control unit 28 by, for example, an operator, or it can be transmitted to the control unit 28 from, for example, a host computer electrically connected to the control unit 28. Based on such information about the total length, the control unit 28 can acquire the position information of a specified portion of the plurality of bobbins B (e.g., the front end face of the bobbins B arranged at the foremost side) in a specified direction. In this case, the control unit 28 corresponds to the position information acquisition unit of the present invention. Alternatively, the winding device 4 may also have a sensor (not shown) that detects the position of a specified portion of the plurality of bobbins B in a specified direction. This sensor may also send the position information to the control unit 28. In this case, the sensor corresponds to the position information acquisition unit of the present invention.

[0086] After acquiring information about the total length of the multiple bobbins B, the control unit 28 derives an adjustment amount for the traverse region R based on this information. The adjustment amount can be, for example, the value obtained by dividing the difference between the total length and the reference length by 2. Based on this adjustment amount, the control unit 28 controls the movement drive unit 50 to move the traverse device 22 before the winding operation begins, thereby adjusting the position of the traverse region R at least in a predetermined direction. This allows the position of the traverse region R in the predetermined direction to be optimized relative to the bobbin B mounted at the center of the bobbin support 24 in the front-rear direction. The control unit 28 stores this optimized position of the traverse region R as the position (reference position) of the traverse region R at the start of the winding operation. Furthermore, in this case, the traverse region R may be slightly offset in the predetermined direction relative to the bobbin B positioned at the foremost and the bobbin B positioned at the rearmost. However, compared to the case where no adjustment is made, for example, the offset of the foremost bobbin B from the traverse region R in the predetermined direction can be halved. In this way, overall, the extreme positional offset between the traverse region R and the bobbin B before the start of the winding operation can be suppressed. Thus, before the start of the winding operation, the movement drive unit 50 can be controlled to reduce the positional offset between the traverse region R and the bobbin B in a predetermined direction. Furthermore, the specific timing for adjusting the position of the traverse region R before the start of the winding operation can be, for example, before the yarn Y is about to be hooked into the slits S of each bobbin B, or the position adjustment can be performed, for example, during the period from the end of yarn loading into the slits S until the start of the winding operation.

[0087] Next, the position control of the traverse region R in a predetermined direction during the winding operation will be explained. During the winding operation, the control unit 28 moves the traverse region R to its initial position at the start of the winding operation (the aforementioned reference position). This position control is performed simultaneously with, for example, the angle adjustment control of the contact roller 25 during the winding operation. Two control examples will be described below. Generally, the first control example (refer to...) Figure 7 (b) is a control example that maintains the positional relationship between the lateral movement region R and the cylinder B in a specified direction at approximately the same level. Second control example (refer to...) Figure 7 (c) is a control example that causes the traverse region R to gradually move closer to one side of the slit S in a specified direction during the winding operation.

[0088] In both the first and second control examples, the control sequence is the same. First, the control unit 28 acquires target information related to the target position (or the amount of movement of the support member 26) of the traverse region R in a predetermined direction, taking into account the bending of the bobbin support 24 caused by the thickening of the winding P and the angle adjustment of the support member 26 relative to this bending. This information can be stored in advance in the RAM of the control unit 28, for example, as a table that establishes a correlation between time and position (or amount of movement). Alternatively, this information can be derived based on a predetermined calculation formula, etc., using the detection results of a sensor (not shown) that detects information related to the amount of bending of the bobbin support 24 and a sensor (not shown) that detects information related to the angle of the support member 26. By appropriately controlling the movement drive unit 50 based on such target information, the position control of the traverse region R in a predetermined direction during the winding operation can be performed.

[0089] The specific content of the aforementioned target information differs between the first and second control examples. In the first control example, the target information is set such that the positional relationship between the traverse region R of a certain traverse guide 32 and the bobbin B corresponding to the traverse guide 32 in a predetermined direction does not change over time (i.e., the relative position in the predetermined direction does not change over time). That is, except before the start of the take-up operation, the movement drive unit 50 is controlled to reduce the positional offset between the traverse region R and the bobbin B in the predetermined direction during the take-up operation. As a result, the deformation of the package P in the predetermined direction is suppressed (see reference). Figure 7 (b)). More specifically, for example, like Figure 8 As shown in (a), the shape of the end face E1 on one side of the specified direction of the roll P is symmetrical with the shape of the end face E2 on the other side of the specified direction in the specified direction.

[0090] On the other hand, in the second control example, the target information is set such that the lateral movement region R gradually shifts relative to the cylinder B in at least one direction (the side forming the slit S) (see reference). Figure 7 (c) solid arrow). Therefore, the outer circumferential surface of the roll P is intentionally slightly offset to one side in a specified direction (see reference). Figure 7 (c)).

[0091] Before explaining the second control example in more detail, the purpose of implementing the second control example will be explained. As mentioned above, generally, as the winding of package P thickens, the radially inner portion of package P tends to bulge in a predetermined direction. That is, the compressive force generated by the yarn tension in the radially outer portion of package P acts on the radially middle portion (middle layer) of the yarn layer, creating a convex edge. As a result, end faces E1 and E2 bulge in a predetermined direction (see reference). Figure 8 (a) etc. For example, when the positional relationship between the bobbin B and the traverse region R in a specified direction remains fixed from the start to the end of the winding operation (see reference). Figure 8 (b) The double-dotted lines within roll P), end faces E1 and E2 bulge to the same degree in the specified direction (refer to...). Figure 8 (a) and (b)). In this case, assuming the length of the transverse movement region R in the specified direction is Lr, the size of the convex edge in the specified direction (the bulge of end faces E1 and E2) is dLr, and the length of the yarn layer of the package P in the specified direction is Lr2, then Lr2 = Lr + 2 × dLr. Additionally, as... Figure 8 (b) sectional view Figure 8As shown in the cross-sectional view of the package P described in (a), the radial middle portion (middle layer) of the yarn layer is most prone to bulging in a predetermined direction. Due to this bulge, when the bobbin B is mounted on the bobbin support 24 with a slit S positioned on one side of the predetermined direction, there is a high risk that the yarn Y may be squeezed out of the bobbin B on the other side of the predetermined direction. Alternatively, even if such a serious problem as the yarn Y being squeezed out of the bobbin B does not occur, if the blank portion at the end of the bobbin B on the other side of the predetermined direction is narrow, the following problems may arise. Typically, multiple completed packages P are conveyed on a tray (not shown) capable of holding multiple packages P. Multiple holes (not shown) are formed on the mounting surface (not shown) of the tray, each capable of inserting into the end of a multiple bobbin B on the other side of the predetermined direction. In other words, the multiple packages P placed on the tray are conveyed with the axial direction of each bobbin B approximately parallel to the vertical direction, and the end face of the package P approximately parallel to the horizontal direction. With each bobbin B securely inserted into its respective hole, multiple rolls P are transported stably. However, if the aforementioned gaps are narrow, the bobbin B may not be securely inserted into the holes, and the rolls P may easily tip over. Furthermore, if the bobbin B is not securely inserted into the holes, there is a concern that the rolls P may shift horizontally on the mounting surface during transport, come into contact with adjacent rolls P, and break.

[0092] This can be achieved by implementing the second control example during the winding operation, which can reduce the bulging of the end face E2 on the other side of the specified direction of the package P. In the second control example, during the winding operation, the control unit 28 (1) moves the traverse device 22 only to one side of the specified direction, or (2) moves the traverse device 22 to one side of the specified direction and then moves it to the other side of the specified direction.

[0093] First, the control described in (1) above will be explained. After the winding operation begins, or after a predetermined time has elapsed since the start of the winding operation, the control unit 28 controls the movement drive unit 50 to gradually move the traverse device 22 towards a predetermined direction (see reference). Figure 7 (The solid arrow in (c)). At this time, the movement of the traverse device 22 is greater than that in, for example, the first control example. More specifically, the traverse region R just before the end of the winding operation is offset by a predetermined amount in a predetermined direction relative to the traverse region R at the start of the winding operation. The predetermined amount can be, for example, dLr as described above (refer to...). Figure 8 (c) The double-dotted line within the roll P can be any other value. Through this control, the position of the intermediate layer in a specified direction can be shifted to one side. As a result, the bulge of end face E1 increases, while the bulge of end face E2 is suppressed (see reference). Figure 8(c) Therefore, since the bobbin B can be firmly inserted into the hole of the tray, the roll P can be transported stably.

[0094] The control described in (2) above will now be explained. In the control described in (1) above, there is a concern that the radially outer portion of the package P is severely skewed to one side of the specified direction, which could lead to shape damage of the package P. Furthermore, if the traverse region R moves too far to one side of the specified direction, there is a concern that the yarn layer of the package P may be squeezed out from the end face of the bobbin B to one side of the specified direction. Therefore, the control described in (2) above can replace the control described in (1) above. As an example, the control unit 28 first controls the movement drive unit 50 to gradually move the traverse device 22 to one side of the specified direction after the winding operation has started or after a specified time has elapsed since the start of the winding operation (see reference). Figure 7 (The solid arrow in (c)). Then, the control unit 28 gradually moves the traverse device 22 to the other direction in the prescribed direction (see reference). Figure 7 (dash arrow in (c)). For example, the control unit 28 controls the movement drive unit 50 such that the lateral movement area R when the weight of the roll P reaches approximately half of the target weight is offset dLr in a predetermined direction compared to the lateral movement area R at the start of the take-up operation (see reference). Figure 8 (d) The double-dotted line within the roll P). Then, the control unit 28 controls the movement drive unit 50 in such a way that the position of the traverse area R in the specified direction when the weight of the roll P reaches the target weight is approximately the same as the position of the traverse area R in the specified direction at the start of the take-up operation (see reference). Figure 8 (d) double-dotted line). Thus, the bulge of end face E2 can be controlled, and compared with the control described above (1), the radially outer portion of the roll P can be suppressed from skewing in a predetermined direction. With such control, ideally, it is preferable to be like Figure 8 As shown in (d), the bulge in the specified direction of end face E1 is 2×dLr, and the bulge in the specified direction of end face E2 is zero. However, it is not limited to this. Since the bulge is smaller, it is possible to suppress the narrowing of the blank portion at the end of the tube B in the other direction.

[0095] As described above, by using the moving drive unit 50 to move the traverse device 22 at least in a predetermined direction, the range of movement (traverse region R) of the yarn Y caused by the driving of the traverse yarn guide 32 included in the traverse device 22 can be moved in the predetermined direction. This suppresses the relative positional variation between the traverse region R and the bobbin B in the predetermined direction. Therefore, problems in the formation of the package P caused by the relative positional variation between the traverse region R and the bobbin B can be suppressed.

[0096] Furthermore, in a structure where the traverse region R is fixed relative to the traverse device 22, as in this embodiment (specifically a blade-type traverse device), the movement drive unit 50 is particularly effective.

[0097] Furthermore, the traverse device 22 includes all of the plurality of traverse yarn guides 32. Therefore, the traverse region R of all the traverse yarn guides 32 can be moved using a single motion drive unit 50. Thus, compared to a structure requiring multiple motion drive units (not shown), the structure of the spinning traction machine 1 can be simplified.

[0098] Furthermore, the movement drive unit 50 has a ball screw mechanism 51 capable of adjusting the position of the traverse device 22 in a predetermined direction. Thus, compared to a structure that moves the traverse device 22 by propulsion force, such as a cylinder (not shown), the position of the traverse device 22 can be adjusted more precisely.

[0099] Furthermore, by adjusting the angle of the traverse device 22 and the contact roller 25 using the angle adjustment unit 27, uneven contact pressure between the rolls P caused by the thickening of the windings. However, if only the angle is adjusted, there is a concern that the traverse region R may shift relative to the bobbin B in a predetermined direction, potentially leading to shape damage of the roll P. In this embodiment, since the traverse region R can be suppressed from shifting relative to the bobbin B in a predetermined direction using the movement drive unit 50, shape damage of the roll P can be effectively suppressed.

[0100] Furthermore, the movement drive unit 50 is configured to move the support member 26 in the same way as the angle adjustment unit 27. Therefore, compared to the case where the spinning traction machine 1 is configured to move the traverse device 22 relative to the support member 26, the design can be simplified.

[0101] Furthermore, the position of the lateral movement area R is adjusted during the winding process. Therefore, it is possible to effectively shape the package P, or to freely change the shape of the package P to a certain extent.

[0102] Furthermore, the spinning traction machine 1 has a position information acquisition unit (control unit 28 or a sensor not shown). This allows the offset of the traverse region R in a predetermined direction caused by the length error of the bobbin B to be determined based on the position information. Therefore, this position information can be used to compensate for the offset of the traverse region R relative to the bobbin B in the predetermined direction.

[0103] Furthermore, the positional offset of the lateral movement region R relative to the bobbin B caused by the length error of the bobbin B can be known in advance by the position information acquisition unit before the winding operation begins. The control unit 28 controls the movement drive unit 50 based on the position information before the winding operation begins. Therefore, the aforementioned positional offset can be effectively compensated.

[0104] Furthermore, as the first control example performed by the control unit 28, the control unit 28 controls the movement drive unit 50 in a manner that reduces the positional offset between the lateral movement region R and the bobbin B in a predetermined direction. Such control is particularly effective when it is desired to make the shape of the roll P symmetrical in a predetermined direction.

[0105] Furthermore, as described in the second control example performed by the control unit 28, the traverse region R is intentionally moved to one side of a predetermined direction during the take-up operation. In this way, by allowing an increase in the bulge of the end face E1 on one side of the predetermined direction of the package P (the side with the wider blank space of the bobbin B), the bulge of the end face E2 on the other side of the predetermined direction of the package P (the side with the narrower blank space of the bobbin B) can be correspondingly reduced. Therefore, since the narrowing of the blank space on the other side of the predetermined direction of the bobbin B can be suppressed, the risk of yarn Y being squeezed out of the bobbin B can be reduced.

[0106] Furthermore, as described above, the control unit 28 can also move the traverse device 22 to one side of a predetermined direction during the winding operation, and then move the traverse device 22 to the other side of the predetermined direction. This can suppress the narrowing of the gap on the other side of the predetermined direction of the bobbin B, and can also suppress the radially outer portion of the roll P from deflecting to one side of the predetermined direction.

[0107] Next, variations of the described embodiment will be described. However, for parts having the same structure as the aforementioned embodiment, the same reference numerals will be added, and their descriptions will be omitted as appropriate.

[0108] (1) Motion drive unit 50 (reference) Figure 6 It can also be set to Figure 9 In the spinning traction machine 1a shown in (a), two take-up devices 4A and 4B, which have the same function as the take-up device 4 of the spinning traction machine 1, are arranged approximately symmetrically about the left and right directions. For example, take-up device 4A has the same structure as the take-up device 4 described above. Take-up device 4B has a structure approximately symmetrical to take-up device 4A about the left and right directions. Take-up device 4A has a bobbin support 24A, and take-up device 4B has a bobbin support 24B. Both bobbin supports 24A and 24B are cantilevered at their rear ends. Furthermore, as shown in (a), Figure 9As shown in (b), the plurality of bobbins B (bobbins BA) mounted on bobbin support 24A and the plurality of bobbins (bobbins BB) mounted on bobbin support 24B are arranged opposite to each other in the front-rear direction. That is, the slit S of bobbin BA is located on the front side and the slit S of bobbin BB is located on the rear side. In this structure, by rotating bobbin support 24A and bobbin support 24B in opposite directions, the winding direction of yarn Y wound on bobbin BA can be made the same as the winding direction of yarn Y wound on bobbin BB. Thus, the above-mentioned package P can be formed using the two devices 4A and 4B. Wherein, without the motion drive unit 50 (see reference 50), Figure 6 In the case of [unclear context], the following problems may arise due to the downward bending of the bobbin supports 24A and 24B as the package P thickens during winding, and the opposite orientations of the bobbins BA and BB. Specifically, in the take-up device 4A, the package P may tilt in a predetermined direction towards the side opposite to the slit S. On the other hand, in the take-up device 4B, the package P may tilt in a predetermined direction towards the slit S. This raises concerns that the take-up devices 4A and 4B may form packages P with different shapes. This problem can be avoided by providing a movement drive unit 50 in both the take-up devices 4A and 4B of the spinning traction machine 1a. The first control example described above can be implemented in the spinning traction machine 1a. Alternatively, the second control example can also be implemented. In addition, when the second control example is implemented in the spinning traction machine 1a, it is also possible to consider that the orientation of the bobbin BA is opposite to that of the bobbin BB, and that the amount of movement of the traverse region R generated by the drive of the moving drive unit 50 is different between the take-up device 4A and the take-up device 4B.

[0109] (2) In the embodiments described above, the motion drive unit 50 has a ball screw mechanism 51, but is not limited thereto. For example, the motion drive unit 50 may also have a gear and rack mechanism (not shown). Alternatively, the motion drive unit 50 may be configured as a cylinder (not shown) or the like, which uses the pressure of a fluid to move the traverse device 22.

[0110] (3) In the embodiments described above, the winding device 4 has an angle adjustment section 27, but is not limited thereto. In a structure where the winding device 4 does not have an angle adjustment section 27, the positional relationship between the traverse region R and the bobbin B may shift as the bobbin support 24 bends with the thickening of the winding P. In such a structure, it is effective to use the movement drive section 50 to move the traverse device 22 at least in a predetermined direction.

[0111] (4) In the embodiments described above, the bobbin support 24 is cantilevered, but is not limited to this. The bobbin support 24 may also be supported at both ends (i.e., the bending of the bobbin support 24 as the winding of the roll P thickens may be suppressed). In such a structure, the positional relationship between the traverse region R and the bobbin B in a predetermined direction may also be offset due to errors in the total length of the multiple bobbins B. In such a structure, it is effective to move the traverse device 22 at least in a predetermined direction using the movement drive unit 50.

[0112] (5) In the embodiments described above, the control unit 28 controls the movement drive unit 50 to move the traverse device 22 both before the start of the winding operation and during the winding operation, but is not limited to this. The control unit 28 may also control the movement drive unit 50 only during one timing period, before the start of the winding operation and during the winding operation.

[0113] (6) In the embodiments described above, the control unit 28 controls the movement drive unit 50 based on various information, but is not limited thereto. For example, the positional deviation of the traverse region R and the bobbin B in a predetermined direction caused by the error in the total length of the plurality of bobbins B can also be compensated by the operator as disclosed below. That is, the operator can also obtain information about the total length of the plurality of bobbins B in advance by some method. Based on this information, the operator derives information related to the amount of movement of the traverse device 22 generated by the movement drive unit 50, and inputs this information into the operation unit (not shown). The movement drive unit 50 can also move the traverse device 22 based on the information input to the operation unit.

[0114] (7) In the embodiments described above, the angle adjustment unit 27 moves the rear end of the support member 26 in the vertical direction, but is not limited thereto. For example, the rear end of the support member 26 may be fixed in the vertical direction, and the angle adjustment unit 27 may move the front end of the support member 26 in the vertical direction. Alternatively, the front and rear ends of the support member 26 may be able to move independently in the vertical direction. Furthermore, the support member 26 may be oscillatingly supported on the frame 20b, but is not limited thereto. The support member 26 may also be driven to move linearly in a direction perpendicular to the front-rear direction, for example.

[0115] (8) In the embodiments described above, the traversing device 22 is mounted on the support member 26. That is, the traversing device 22 moves integrally with the support member 26 by moving the support member 26 using the movement drive unit 50. However, the traversing device 22 may not necessarily be configured to move integrally with the support member 26. For example, the support member 26 may be configured to have a track member (not shown), along which the traversing device 22 can move relative to the support member 26. Furthermore, a movement drive unit (not shown) configured to move the traversing device 22 relative to the support member 26 may also be provided.

[0116] (9) In the embodiments described above, all the traverse guides 32 belonging to the take-up device 4 are included in the traverse device 22. In other words, in the embodiments described above, all the traverse guides 32 are driven by a common drive source, namely the traverse motor 33. However, this is not a limitation. For example, the same number of traverse devices (not shown) as the number of traverse guides 32 may be provided. That is, multiple traverse devices may be driven individually by the traverse motor (not shown) provided in each of them. Alternatively, multiple traverse devices may be provided, for example, each having multiple traverse guides 32. In this case, each traverse device may also have a traverse motor (not shown). In this way, in the structure provided with multiple traverse devices, a moving drive unit (not shown) that moves and drives each traverse device individually in a predetermined direction may be provided. Alternatively, not all of the multiple traverse devices may be moved and driven in a predetermined direction. Only a portion of the multiple traverse devices may be moved and driven by the moving drive unit.

[0117] (10) In the embodiments described above, the traverse device 22 is a blade-type traverse device. However, the form of the traverse device 22 is not limited to this. For example, the traverse device 22 may also have an arm 61 for swinging the traverse yarn guide 32. Figure 9 (Example shown) An arm-type traverse device with a motor (not shown) for the swing drive arm. That is, it can also be configured such that the traverse guide 32 is mounted on the top end of the swing-driven arm 61, and the yarn Y is moved laterally reciprocally by swinging. In such a structure, the traverse region R is fixed relative to the housing 31. Alternatively, the traverse device 22 may also have an annular belt (not shown) to which the traverse guide 32 is fixed, a motor (not shown) for reciprocatingly driving the annular belt, and multiple pulleys (not shown) for winding the annular belt. In such a structure, the position (and / or length) of the traverse region R in a predetermined direction can be changed during the winding operation, but the entire traverse device 22 can also be moved using the movement drive 50.

[0118] (11) In the embodiments described above, the lateral movement region R is fixed relative to the housing 31 (i.e., fixed relative to the lateral movement device 22), but is not limited to this. For example, a movement drive unit may be provided to move the center position of the lateral movement region R relative to the housing 31 in a predetermined direction.

[0119] (12) The present invention is not limited to the spinning traction machines 1 and 1a mentioned above, but can also be applied to a yarn winding machine that winds multiple yarns Y onto multiple bobbins B arranged in a specified direction.

Claims

1. A yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages, characterized in that, have: A tube support that extends along a predetermined direction, arranging and holding the plurality of tubes along the predetermined direction. Multiple transverse yarn guides are used to make the multiple yarns move laterally and reciprocate along the specified direction. The configuration includes at least one of the plurality of traverse yarn guides, a traverse device for driving the at least one traverse yarn guide, and A moving drive unit that moves the traverse device at least along the specified direction; The tube support is cantilevered and extends at least in the horizontal direction; This yarn take-up machine also features: Contact rollers, which are arranged at least along the specified direction and apply contact pressure to the plurality of rolls, An angle adjustment section configured to adjust the angle of the traverse device and the contact roller relative to the horizontal direction, and A support member that supports the traverse device and the contact roller and is configured to be adjustable by the angle adjustment unit; The moving drive unit is configured to move and drive the support member at least along the predetermined direction.

2. The yarn winding machine as described in claim 1, characterized in that: Equipped with a control unit; The control unit acquires target information related to the target position of the traverse area of ​​the at least one traverse guide in the specified direction or the amount of movement of the support member, taking into account the bending of the bobbin support caused by the thickening of the winding of the package and the angle adjustment of the support member relative to the bending. Furthermore, the motion drive unit is controlled based on the target information.

3. A yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages, characterized in that, have: A tube support that extends in a predetermined direction and holds the plurality of tubes arranged in the predetermined direction. Multiple transverse yarn guides are used to make the multiple yarns move laterally and reciprocate along the specified direction. It is configured to include at least one of the plurality of traverse yarn guides and a traverse device for driving the at least one traverse yarn guide. The moving drive unit that causes the lateral movement device to move at least along the specified direction. A position information acquisition unit acquires position information relating to the position of a predetermined portion of the plurality of tubes in a predetermined direction; as well as Second Control Unit; Based on the position information, the second control unit controls the movement drive unit before the winding action of winding the multiple yarns onto the multiple bobbins begins.

4. The yarn winding machine as described in claim 3, characterized in that: The tube support is cantilevered and extends at least in the horizontal direction; This yarn take-up machine has the following features: Contact rollers, which are arranged at least along the specified direction and apply contact pressure to the plurality of rolls, and An angle adjustment section is configured to allow the angles of the traverse device and the contact roller relative to the horizontal direction to be adjusted.

5. The yarn winding machine as described in claim 4, characterized in that: It has a support member that supports the traverse device and the contact roller and is configured to be adjustable by the angle adjustment part; The moving drive unit is configured to move and drive the support member at least along the predetermined direction.

6. The yarn winding machine according to any one of claims 1 to 5, characterized in that: Equipped with a third control unit; The third control unit controls the movement drive unit in such a way that the traverse area of ​​the at least one traverse yarn guide is deviated from the position of the bobbin in the specified direction.

7. A yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages, characterized in that, have: A tube support that extends along a predetermined direction, arranging and holding the plurality of tubes along the predetermined direction. Multiple transverse yarn guides are used to make the multiple yarns move laterally and reciprocate along the specified direction. It is configured to include at least one of the plurality of traverse yarn guides and a traverse device for driving the at least one traverse yarn guide. The moving drive unit that moves the traverse device at least along the predetermined direction, and Third Control Unit; The third control unit controls the movement drive unit in such a way that the traverse area of ​​the at least one traverse yarn guide is deviated from the position of the bobbin in the specified direction.

8. The yarn winding machine as described in claim 7, characterized in that: The tube support is cantilevered and extends at least in the horizontal direction; This yarn take-up machine has the following features: Contact rollers, which are arranged at least along the specified direction and apply contact pressure to the plurality of rolls, and An angle adjustment section is configured to allow the angles of the traverse device and the contact roller relative to the horizontal direction to be adjusted.

9. The yarn winding machine according to any one of claims 1 to 8, characterized in that: At the end of each bobbin held by the bobbin support in the specified direction, a slit is formed on one side to hook the yarn. Equipped with a fourth control unit; During the winding operation of winding the multiple yarns onto the multiple bobbins, the fourth control unit controls the movement drive unit to move the traverse device at least to one direction in the predetermined direction.

10. The yarn winding machine as described in claim 9, characterized in that: The fourth control unit moves the traverse device to one direction in the specified direction during the winding operation, and then moves it to the other direction in the specified direction.

11. A yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages, characterized in that, have: A tube support that extends along a predetermined direction, arranging and holding the plurality of tubes along the predetermined direction. Multiple transverse yarn guides are used to make the multiple yarns move laterally and reciprocate along the specified direction. The configuration includes at least one of the plurality of traverse yarn guides, a traverse device for driving the at least one traverse yarn guide, and A moving drive unit that moves the traverse device at least along the specified direction; At the end of each bobbin held by the bobbin support in the specified direction, a slit is formed on one side to hook the yarn. The yarn winding machine also has a fourth control unit; During the winding operation of winding the multiple yarns onto the multiple bobbins, the fourth control unit controls the movement drive unit so that the traverse device moves only in one direction in the specified direction.

12. A yarn winding machine that winds multiple yarns onto multiple bobbins to form multiple packages, characterized in that, have: A tube support that extends along a predetermined direction, arranging and holding the plurality of tubes along the predetermined direction. Multiple transverse yarn guides are used to make the multiple yarns move laterally and reciprocate along the specified direction. The configuration includes at least one of the plurality of traverse yarn guides, a traverse device for driving the at least one traverse yarn guide, and A moving drive unit that moves the traverse device at least along the specified direction; At the end of each bobbin held by the bobbin support in the specified direction, a slit is formed on one side to hook the yarn. The yarn winding machine also has a fourth control unit; During the winding action of winding the multiple yarns onto the multiple bobbins, the fourth control unit controls the movement drive unit to move the traverse device at least to one of the directions in the specified direction. During the take-up operation, the fourth control unit controls the movement drive unit so that the traverse area of ​​each of the at least one traverse guide when the weight of each of the plurality of rolls reaches half of the target weight is offset to the one direction side of the predetermined direction compared to the traverse area at the start of the take-up operation, thereby causing the traverse device to move to the one direction side of the predetermined direction. Then, the movement drive is controlled such that the position of the traverse region in the predetermined direction when the weight of each of the plurality of rolls reaches the target weight is consistent with the position of the traverse region in the predetermined direction at the start of the winding action, thereby moving the traverse device to the other side of the predetermined direction.

13. The yarn winding machine according to any one of claims 1 to 12, characterized in that: The traversing region of the at least one traversing yarn guide is fixed relative to the traversing device.

14. The yarn winding machine as described in claim 13, characterized in that: Each of the plurality of lateral yarn guides is configured to: move each of the plurality of yarns laterally back and forth by means of two blade yarn guides driven to rotate in opposite directions, or be mounted on an arm driven by a swing.

15. The yarn winding machine according to any one of claims 1 to 14, characterized in that: The traverse device includes all of the plurality of traverse yarn guides.

16. The yarn winding machine according to any one of claims 1 to 15, characterized in that: The moving drive unit has a linear actuator configured to adjust the position of the traverse device in the predetermined direction.

17. The yarn winding machine according to any one of claims 1 to 16, characterized in that: Equipped with a first control unit; The first control unit controls the movement drive unit during the winding action of winding the multiple yarns onto the multiple bobbins.

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