JP2023135874A - Yarn winder - Google Patents

Abstract

To provide a constitution capable of securing the positional freedom of a bobbin holder during yarn hanging work, in a yarn winder in which a thread guide of yarn fed out of a yarn feed roller is inclined relative to the vertical direction.SOLUTION: A yarn winder 1 has a contact roller 31 and a traverse device 21. The contact roller 31 rotates in contact with a package 92. The traverse device 21 has a traverse guide, an upstream guide rail and a downstream guide rail. The traverse guide traverses yarn 91 in contact with the yarn 91 leading from a yarn feeding roller 100 to the contact roller 31. The upstream guide rail and the downstream guide rail allow the movement of the traverse guide in the winding width direction, and restrict the movement of the traverse guide toward the upstream side or the downstream side of the yarn route. A downstream opposing face of the downstream guide rail, which faces the yarn route, includes a retreat surface that separates from the yarn route when coming nearer to the downstream of the yarn route when viewed in the axial direction of the package 92.SELECTED DRAWING: Figure 1

Description

The present invention primarily relates to a yarn winding machine that winds yarn around a bobbin to manufacture packages.

In Patent Document 1, two winding devices are arranged for one godet roller (yarn feeding roller). Therefore, the yarn path from the godet roller to the winding device is inclined with respect to the vertical direction. Patent Document 1 discloses a layout in which a traverse yarn guide device is inclined in accordance with the inclination of the yarn path.

Utility model registration No. 3209831

In the winding device of Patent Document 1, since the traverse yarn guide device is tilted, the traverse yarn guide device protrudes more horizontally as it approaches the lower part in the vertical direction. Therefore, in the layout of Patent Document 1, due to the inclination of the traverse thread guide device, when the thread is first hung on the bobbin holder of the winding device, depending on the position of the bobbin holder on which the thread is hung, the traverse thread guide Since the thread may come into contact with the device and cause thread breakage, the degree of freedom in positioning the bobbin holder during threading work is reduced.

The present invention was made in view of the above circumstances, and its main purpose is to improve the thread winding operation in a thread winding machine in which the thread path of the thread sent out from the thread feed roller is inclined with respect to the vertical direction. An object of the present invention is to provide a configuration that can ensure flexibility in the position of a bobbin holder.

Means and effects for solving problems

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

According to the aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine winds the yarn sent out from the yarn feed roller onto a bobbin to manufacture a package. The yarn winding machine includes a bobbin holder, a contact roller, and a traverse device. The bobbin holder holds the bobbin. The contact roller rotates in contact with the package. The traverse device faces the contact roller and is arranged so as to sandwich the yarn from the yarn feed roller to the contact roller between the traverse device and the contact roller. The traverse device includes a traverse guide, an upstream guide rail, and a downstream guide rail. The traverse guide contacts the yarn from the yarn feed roller to the contact roller and traverses the yarn. The upstream guide rail allows movement of the traverse guide in the winding width direction, and restricts movement of the traverse guide toward the upstream side of the yarn path. The downstream guide rail allows movement of the traverse guide in the winding width direction, and restricts movement of the traverse guide toward the downstream side of the yarn path. During winding of the yarn, the yarn path from the yarn feed roller to the contact roller is inclined with respect to the vertical direction. The downstream facing surface of the downstream guide rail that faces the yarn path includes a retraction surface that moves away from the yarn path as it approaches the downstream side of the yarn path when viewed in the axial direction of the package.

By forming a retraction surface on the downstream guide rail, the position of the bobbin holder on which the thread is threaded during thread threading work can be set closer to the traverse device side than the contact roller, and the thread can be threaded from the thread feed roller to the bobbin holder. The yarn can be moved away from the contact rollers. Therefore, the problem that the thread comes into contact with the contact roller during the threading operation and causes thread breakage is less likely to occur. Thereby, flexibility in positioning the bobbin holder during threading work can be ensured.

In the yarn winding machine, it is preferable that the upstream facing surface is provided along the yarn path when viewed in the axial direction of the package.

By forming the retraction surface only on the downstream guide rail that has a high probability of coming into contact with the yarn, the shape of the upstream guide rail can be simplified.

The yarn winding machine described above preferably has the following configuration. That is, a plurality of winding units including the bobbin holder, the contact roller, and the traverse device are provided. The winding units are arranged vertically or horizontally.

If the winding units are arranged side by side and the yarn is fed from a single yarn feed roller, the yarn path from the yarn feed roller to the contact roller must be inclined. Therefore, the configuration in which the downstream guide rail is provided with a retraction surface can be effectively utilized.

The yarn winding machine described above preferably has the following configuration. That is, the winding sections are arranged one above the other. The inclination angle with respect to the vertical direction of the yarn path from the yarn feed roller to the contact roller located on the upper side is greater than the inclination angle with respect to the vertical direction of the yarn path from the yarn feed roller to the contact roller located on the lower side. It's also big. At least the downstream facing surface of the downstream guide rail of the winding section disposed on the upper side includes the retraction surface.

Thereby, a retraction surface can be provided on the downstream guide rail of the winding section where the yarn path is inclined.

In the yarn winding machine, a lifting device is provided that raises and lowers the traverse guide relative to the contact roller when the direction in which the yarn feeding roller is positioned with respect to the yarn winding machine is the height direction. It is preferable to have one.

By changing the relative heights of the traverse guide and the contact roller, the angle of inclination of the yarn path with respect to the vertical direction changes. Therefore, the configuration in which the downstream guide rail is provided with a retraction surface can be effectively utilized.

In the above-mentioned thread winding machine, when viewed in the axial direction of the package, it is preferable that the thread threading position for threading the bobbin be on the traverse guide side with respect to the contact roller.

If the threading position is on the traverse guide side, the thread path will be close to the downstream guide rail during threading. Therefore, the configuration in which the downstream guide rail is provided with a retraction surface can be effectively utilized.

FIG. 1 is a front view of a yarn winding machine according to an embodiment of the present invention. Block diagram of a thread winding machine. FIG. 2 is a front sectional view of the traverse device and its vicinity. An explanatory diagram showing that the traverse width becomes shorter due to a difference in free length. The front view of the upper winding section during threading.

Next, embodiments 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, upstream or downstream in the running direction of the yarn may be simply referred to as upstream or downstream.

A spinning machine (not shown) is arranged upstream of the yarn winding machine 1 shown in FIG. Yarn 91 manufactured by the spinning machine is supplied to the yarn winding machine 1 via a yarn feeding roller 100. The yarn winding machine 1 winds a yarn 91 onto a bobbin 90 to form a yarn layer on the bobbin 90 to manufacture a package 92. The thread 91 is, for example, an elastic thread such as spandex. However, the type of thread 91 is not limited to this, and may be a synthetic fiber thread such as nylon or polyester.

As shown in FIG. 1, the yarn winding machine 1 includes two winding sections 10 arranged one above the other. Yarn 91 is individually supplied to each winding section 10, and packages 92 are individually manufactured at each winding section 10. A plurality of threads 91 arranged in the axial direction of the package 92 are supplied to the winding unit 10 . The winding unit 10 winds up a plurality of yarns 91, respectively, to manufacture a plurality of packages 92.

Since the two winding units 10 each include the same device, the upper and lower winding units 10 will be described together below. As shown in FIG. 1, the winding section 10 includes a frame 11, a first housing 20, a second housing 30, and a turret plate 40.

The frame 11 is a member that holds each part of the winding section 10. A traverse device 21 is attached to the first housing 20. The traverse device 21 causes a traverse guide 23 (to be described later) to traverse the yarn 91 sent downstream by reciprocating in the winding width direction (the axial direction of the package 92) while being engaged with the yarn 91. As shown in FIG. 2, the traverse device 21 includes a traverse cam 22 and a traverse guide 23.

The traverse cam 22 is a roller-shaped member arranged parallel to the bobbin 90. 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.

Traverse motor 51 is controlled by control device 50 . The control device 50 includes a CPU, ROM, RAM, and the like. The CPU executes various controls regarding the winding unit 10 by reading programs stored in the ROM into the RAM and executing them.

The traverse guide 23 is a portion that engages with the yarn 91 extending from the yarn feed roller 100 to a contact roller 31, which will be described later. The distal end of the traverse guide 23 has, for example, a substantially U-shaped guide portion, which engages with the thread 91 so as to sandwich the thread 91 in the winding width direction. The base end of the traverse guide 23 is located in the cam groove of the traverse cam 22. With this configuration, by rotationally driving the traverse cam 22, the traverse guide 23 can be reciprocated in the winding width direction.

A contact roller 31 is rotatably attached to the second housing 30. The contact roller 31 adjusts the shape of the yarn layer of the package 92 by being driven to rotate while contacting the yarn layer of the package 92 with a predetermined pressure when the yarn 91 is wound. The traverse device 21 and the contact roller 31 are arranged to face each other with the yarn 91 from the yarn feed roller 100 to the contact roller 31 interposed therebetween.

The contact roller 31 is attached to the second housing 30 via an arm (not shown). By rocking this arm, the contact roller 31 can move relative to the second housing 30 in the vertical direction. Although the contact roller 31 of this embodiment moves downward by its own weight, it may be driven up and down by an actuator such as a cylinder.

Further, as shown in FIG. 2, the winding section 10 includes a position sensor 52 that detects the rocking motion of this arm. The position sensor 52 is, for example, a contact sensor, and detects whether the contact roller 31 has approached the second housing 30 by a predetermined value or more. The detection result of the contact roller 31 is output to the control device 50.

The second housing 30 is provided with an operation panel 32 . The operation panel 32 is a device operated by an operator. The operator issues instructions to the winding unit 10 by operating the operation panel 32. Examples of instructions given by the operator include starting winding, stopping winding, and changing winding conditions.

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

Bobbin holders 41 are provided at two locations on the turret plate 40 that face each other across the center position. A plurality of bobbins 90 can be attached to the bobbin holder 41 in alignment in the axial direction. By rotating the turret plate 40, the positions of the two bobbin holders 41 can be changed. Each bobbin holder 41 is supported by the turret plate 40 in a cantilevered manner.

The bobbin holder 41 is rotatable with respect to the turret plate 40 with the axial position of the bobbin holder 41 as the rotation center. The two bobbin holders 41 are individually rotationally driven by a bobbin holder motor 54 shown in FIG. Bobbin holder motor 54 is controlled by control device 50 .

With the two bobbin holders 41 arranged vertically, the thread 91 is wound onto the higher bobbin holder 41. Specifically, after the bobbin 90 of one bobbin holder 41 is threaded, the other bobbin holder 41 comes into contact with the contact roller 31, and in this state, the other bobbin holder 41 rotates. A package 92 is manufactured by winding the yarn 91 around the bobbin 90 of the bobbin holder 41. Note that a tip support member 45 for supporting the free end side end of the bobbin holder 41 is provided for the bobbin holder 41 in a position where it contacts the contact roller 31.

Furthermore, when a predetermined amount of yarn 91 is wound up and the package 92 is fully wound, the positions of the two bobbin holders 41 are switched by rotating the turret plate 40. Thereafter, while the fully wound package 92 is collected, the thread 91 is wound around the bobbin 90 attached to one bobbin holder 41.

As shown in FIG. 2, the winding section 10 includes a lifting device 60. The lifting device 60 raises and lowers the first housing 20 and the second housing 30 integrally. Specifically, the first housing 20 and the second housing 30 are attached to a lifting member (not shown). A ball nut 61 is attached to this elevating member. Further, a threaded rod 62 is attached to the frame 11. By rotating the threaded rod 62 using the lifting motor 63, the first housing 20 and the second housing 30 can be raised and lowered. The lifting motor 63 is controlled by the control device 50. Note that the lifting device 60 may be realized using a cylinder instead of a ball screw.

The control device 50 controls the lifting device 60 in the following manner depending on the roll thickness of the package 92. As described above, the contact roller 31 is movable up and down with respect to the second housing 30. Therefore, as the thread 91 is wound up and the package 92 becomes thicker, the contact roller 31 moves upward relative to the second housing 30. Based on the detection result from the position sensor 52, the control device 50 determines whether the contact roller 31 has approached the second housing 30 by more than a predetermined value. When the control device 50 determines that the contact roller 31 approaches the second housing 30 by more than a predetermined value, the control device 50 controls the lifting device 60 to raise the first housing 20 and the second housing 30. By repeating the above process, the first housing 20 and the second housing 30 can be raised according to the thickness of the package 92.

Next, the thread path of the thread 91 supplied to the winding section 10 will be explained. In the following description, the winding unit 10 located on the upper side will be referred to as the "upper winding unit 10", and the winding unit 10 located on the lower side will be referred to as the "lower winding unit 10".

In this embodiment, the upper and lower winding units 10 are arranged with horizontal positions shifted so that the yarn 91 supplied to the lower winding unit 10 does not interfere with the upper winding unit 10. There is. The direction of deviation of the upper winding section 10 and the lower winding section 10 coincides with a direction perpendicular to the axial direction of the package 92 in the horizontal plane.

Further, as described above, in this embodiment, the yarn 91 is supplied from the single yarn feeding roller 100 to the upper winding section 10 and the lower winding section 10. Therefore, the thread path of the thread 91 supplied to both winding units 10 cannot be made parallel to the vertical direction. Specifically, the thread path of the yarn 91 supplied to the lower winding section 10 is made parallel to the vertical direction, and the thread path of the yarn 91 supplied to the upper winding section 10 is made to be inclined with respect to the vertical direction. ing. In other words, the inclination angle with respect to the vertical direction of the yarn path of the yarn 91 supplied to the upper winding section 10 is larger than the inclination angle with respect to the vertical direction of the yarn path of the yarn 91 supplied to the lower winding section 10. .

Furthermore, in this embodiment, the term "parallel" includes not only strictly parallel but also substantially parallel (slightly different angles). The same applies to "vertical". Furthermore, the yarn path may change depending on the progress of winding, the position of the traverse device 21, etc., but unless otherwise specified, the yarn path indicates the position of the yarn path at the start of winding.

The upper winding section 10 requires a layout compatible with the inclined yarn path. For example, if all the devices for winding the yarn 91 are tilted, the size of the winding section 10 in the upper stage becomes large, which is not preferable. Therefore, in this embodiment, only the first housing 20 of the upper winding section 10 is arranged to be inclined along the yarn path. Thereby, since the traverse device 21 is arranged along the yarn path, the yarn 91 can be appropriately traversed using the traverse guide 23. Moreover, the yarn winding machine 1 can be made more compact compared to a configuration in which all devices related to winding are tilted.

Next, the effect caused by tilting the traverse device 21 will be explained with reference to FIG. 3. FIG. 3 shows a front sectional view of the traverse device 21 and its vicinity.

As shown in FIG. 3, the traverse device 21 includes an upstream guide rail 24 and a downstream guide rail 25. The upstream guide rail 24 and the downstream guide rail 25 contact the traverse guide 23 and guide the movement of the traverse guide 23. The upstream guide rail 24 and the downstream guide rail 25 allow movement of the traverse guide 23 in the winding width direction (traverse direction). Specifically, a slide space is formed by the upstream guide rail 24 and the downstream guide rail 25. A part of the traverse guide 23 is located in this slide space. Therefore, the traverse guide 23 is slidable in the winding width direction.

Further, the upstream guide rail 24 contacts and interferes with the upper surface of the traverse guide 23, thereby restricting movement of the traverse guide 23 toward the upstream side of the yarn path. The downstream guide rail 25 contacts and interferes with the lower surface of the traverse guide 23 to restrict movement of the traverse guide 23 toward the downstream side of the yarn path. With this configuration, the traverse guide 23 can move only in the winding width direction without moving in the direction along the yarn path.

Here, the surface of the upstream guide rail 24 that faces the yarn path is referred to as an upstream opposing surface 24a. The surface of the downstream guide rail 25 that faces the yarn path is referred to as a downstream opposing surface 25a. In this embodiment, since the traverse device 21 is inclined in accordance with the inclination of the yarn path, the upstream opposing surface 24a is formed along the yarn path. More specifically, the upstream facing surface 24a has a two-stage shape and includes two surfaces at different positions, both of which are formed along the yarn path.

In contrast, the downstream facing surface 25a of the present embodiment includes a retraction surface 25b that moves away from the yarn path as it approaches the downstream side of the yarn path. Specifically, the downstream facing surface 25a has a two-stage shape, and the surface closer to the yarn path is the retraction surface 25b.

Note that although the retraction surface 25b in this embodiment is an inclined surface (flat surface), it may include a curve. The retraction surface 25b of this embodiment extends along the vertical direction. However, depending on the yarn path of the yarn winding machine 1, the retraction surface 25b may be on the yarn path side with respect to the vertical direction, or may be on the traverse cam 22 side. Although there is little need to provide a retraction surface on the upstream facing surface 24a, considering the symmetry of the parts, etc., the upstream facing surface 24a has a surface that is symmetrical with the retraction surface 25b (as it approaches the upstream side of the yarn path, It is also possible to provide a surface for retracting from the surface. In this embodiment, one of the two downstream opposing surfaces 25a is the retracting surface 25b, but the entire downstream opposing surface 25a may be the retracting surface 25b.

Further, the winding unit 10 of this embodiment has a function of adjusting the shape of the package 92 by controlling to temporarily change the height of the traverse guide 23 with respect to the contact roller 31. The height of the traverse guide 23 with respect to the contact roller 31 can be changed, for example, by controlling the above-mentioned lifting device 60. This is because when the first housing 20 and the second housing 30 are raised by the lifting device 60, the height of the traverse guide 23 increases, while the height of the contact roller 31 does not change due to its own weight.

As shown in FIG. 4, when the height of the traverse guide 23 relative to the contact roller 31 is increased, the free length of the yarn 91 becomes longer (from FL1 to FL2 in FIG. 4). As a result, the traverse delay becomes longer (from D1 to D2 in FIG. 4) and the traverse width becomes shorter. Therefore, by temporarily increasing the height of the traverse guide 23 with respect to the contact roller 31, it is possible to suppress the yarn layer from becoming thicker at the ends of the package 92 in the winding width direction (edge height).

Further, since the yarn path changes by changing the height of the traverse guide 23 with respect to the contact roller 31, there is a risk that the yarn 91 and the downstream guide rail 25 will come into contact if the retraction surface 25b is not provided. In this regard, since the downstream guide rail 25 of this embodiment is provided with the retraction surface 25b, contact between the thread 91 and the downstream guide rail 25 can be suppressed during this control.

Next, with reference to FIG. 5, the position of the bobbin 90 when threading will be described. Threading refers to hanging (fixing) the thread 91 on the bobbin 90 of one bobbin holder 41 before winding by the thread winding machine 1 . In this embodiment, threading is performed by an operator capturing the thread 91 using a suction gun or the like and winding it around the bobbin 90 multiple times. Note that the yarn winding machine 1 may perform the yarn threading instead of the operator.

For example, the operator operates the operation panel 32 and inputs an instruction to thread. In response to operator input, control device 50 controls turret motor 53 to rotate turret plate 40 . As a result, the bobbin holder 41 reaches the threading position. As shown in FIG. 5, the threading position of the bobbin holder 41 of this embodiment is on the traverse guide side with respect to the contact roller 31. After that, threading is performed by the operator.

Here, if the threading position of the bobbin holder 41 is on the traverse guide side with respect to the contact roller 31, the thread path will be closer to the traverse guide side. Therefore, the thread 91 comes close to the downstream guide rail 25. Therefore, if the downstream guide rail 25 has a conventional shape, the yarn 91 may come into contact with the downstream guide rail 25. In this regard, since the downstream guide rail 25 of this embodiment is formed with the retraction surface 25b, the yarn 91 is less likely to come into contact with the downstream guide rail 25. On the other hand, in order to prevent the thread 91 from contacting the downstream guide rail 25 with the conventional shape of the downstream guide rail 25, it is necessary to arrange the bobbin holder 41 at a threading position where the thread path approaches the contact roller 31 side. There is. However, if such a threading position of the bobbin holder 41 is selected, the thread 91 may come into contact with the contact roller 31, which may lead to a threading error. Further, when the tip support member 45 is provided as in this embodiment, threading operation becomes difficult. By forming the retreat surface 25b on the downstream guide rail 25 in this way, it is possible to select a threading position of the bobbin holder 41 that allows the threading work to be easily performed without causing mistakes in the threading work. becomes possible.

As described above, the yarn winding machine 1 of this embodiment includes the bobbin holder 41, the contact roller 31, and the traverse device 21. The bobbin holder 41 holds the bobbin 90. The contact roller 31 rotates in contact with the package 92. The traverse device 21 faces the contact roller 31 and is arranged so that the yarn 91 from the yarn feed roller 100 to the contact roller 31 is sandwiched between the traverse device 21 and the contact roller 31. The traverse device 21 includes a traverse guide 23, an upstream guide rail 24, and a downstream guide rail 25. The traverse guide 23 contacts the yarn 91 from the yarn feed roller 100 to the contact roller 31 and traverses the yarn 91. The upstream guide rail 24 allows movement of the traverse guide 23 in the winding width direction, and restricts movement of the traverse guide 23 toward the upstream side of the yarn path. The downstream guide rail 25 allows movement of the traverse guide 23 in the winding width direction, and restricts movement of the traverse guide 23 toward the downstream side of the yarn path. During winding of the yarn 91, the yarn path from the yarn feed roller 100 to the contact roller 31 is inclined with respect to the vertical direction. The downstream facing surface 25a of the downstream guide rail 25 that faces the yarn path includes a retraction surface 25b that moves away from the yarn path as it approaches the downstream side of the yarn path when viewed in the axial direction of the package 92.

By forming the retraction surface 25b on the downstream guide rail 25, the position of the bobbin holder 41 on which the thread 91 is threaded during thread threading work can be set closer to the traverse device 21 side than the contact roller 31, and the thread The thread 91 extending from the feed roller 100 to the bobbin holder 41 can be moved away from the contact roller 31. Therefore, the problem that the thread 91 contacts the contact roller 31 and breaks the thread during threading work is less likely to occur. Thereby, the degree of freedom in positioning the bobbin holder 41 during threading work can be ensured.

In the yarn winding machine 1 of this embodiment, when viewed in the axial direction of the package 92, the upstream opposing surface 24a is provided along the yarn path.

By forming the retreat surface 25b only on the downstream guide rail 25 that has a high probability of coming into contact with the thread 91, the shape of the upstream guide rail 24 can be simplified.

The yarn winding machine 1 of this embodiment includes a plurality of winding sections 10 including a bobbin holder 41, a contact roller 31, and a traverse device 21. The winding units 10 are arranged vertically or horizontally.

When the winding units 10 are arranged side by side and the yarn 91 is supplied from a single yarn feed roller 100, the yarn path from the yarn feed roller 100 to the contact roller 31 must be inclined. Therefore, the configuration in which the downstream guide rail 25 is provided with the retreat surface 25b can be effectively utilized.

In the yarn winding machine 1 of this embodiment, the winding sections 10 are arranged vertically. The angle of inclination with respect to the vertical direction of the yarn path from the yarn feed roller 100 to the contact roller 31 disposed on the upper side is greater than the inclination angle with respect to the vertical direction of the yarn path from the yarn feed roller 100 to the contact roller 31 disposed on the lower side. It's also big. At least the downstream facing surface 25a of the downstream guide rail 25 of the winding section 10 disposed on the upper side includes a retraction surface 25b.

Thereby, the retraction surface 25b can be provided on the downstream guide rail 25 of the winding section 10 on which the yarn path is inclined.

The yarn winding machine 1 of the present embodiment has an elevating mechanism that raises and lowers the traverse guide 23 relative to the contact roller 31 when the direction in which the yarn feed roller 100 is positioned with respect to the yarn winding machine 1 is defined as the height direction. A device 60 is provided.

By changing the relative height of the traverse guide 23 and the contact roller 31, the inclination angle of the yarn path with respect to the vertical direction changes. Therefore, the configuration in which the downstream guide rail 25 is provided with the retreat surface 25b can be effectively utilized.

In the yarn winding machine 1 of this embodiment, when viewed in the axial direction of the package 92, the position at which the yarn 91 is hung on the bobbin 90 is on the traverse guide 23 side with respect to the contact roller 31.

If the threading position is on the traverse guide side, the thread path will be close to the downstream guide rail 25 during threading. Therefore, the configuration in which the downstream guide rail 25 is provided with the retreat surface 25b can be effectively utilized.

Although the preferred embodiments of the present invention have been described above, the above configuration can be modified as follows, for example.

In the yarn winding machine 1 of the above embodiment, the winding sections 10 are arranged vertically. Alternatively, the winding units 10 may be arranged side by side in the horizontal direction. Even in this case, the present invention can be applied because the thread path of the thread 91 supplied from the thread feed roller 100 to at least one winding unit 10 is inclined with respect to the vertical direction. Further, the present invention is applicable to any yarn winding machine in which the yarn path of the yarn 91 supplied from the yarn feed roller 100 is inclined with respect to the vertical direction.

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

In the traverse device 21 of the above embodiment, the upstream facing surface 24a and the downstream facing surface 25a of the lower winding section 10 may be formed along the yarn path.

1 Yarn winder 10 Winding section 23 Traverse guide 24 Upstream guide rail 24a Upstream opposing surface 25 Downstream guide rail 25a Downstream opposing surface 25b Retreat surface 31 Contact roller 40 Turret plate 41 Bobbin holder 90 Bobbin 91 Thread 92 Package

Claims (6)

In a thread winding machine that winds the thread sent out from a thread feed roller onto a bobbin to manufacture packages,
a bobbin holder that holds the bobbin;
a contact roller that rotates in contact with the package;
a traverse device that faces the contact roller and is arranged so as to sandwich the yarn from the yarn feed roller to the contact roller between the yarn feeding roller and the contact roller;
Equipped with
The traverse device includes:
a traverse guide that contacts and traverses the yarn from the yarn feed roller to the contact roller;
an upstream guide rail that allows movement of the traverse guide in the winding width direction and restricts movement of the traverse guide toward the upstream side of the yarn path;
a downstream guide rail that allows movement of the traverse guide in the winding width direction and restricts movement of the traverse guide toward the downstream side of the yarn path;
has
During winding of the yarn, the yarn path from the yarn feed roller to the contact roller is inclined with respect to the vertical direction,
The downstream facing surface of the downstream guide rail that faces the yarn path includes a retraction surface that moves away from the yarn path as it approaches the downstream side of the yarn path when viewed in the axial direction of the package. Yarn winding machine. The yarn winding machine according to claim 1,
When viewed in the axial direction of the package, an upstream facing surface of the upstream guide rail that faces the yarn path is provided along the yarn path. The yarn winding machine according to claim 1 or 2,
a plurality of winding units including the bobbin holder, the contact roller, and the traverse device;
A yarn winding machine characterized in that the winding sections are arranged vertically or horizontally. The yarn winding machine according to claim 3,
The winding units are arranged vertically,
The inclination angle with respect to the vertical direction of the yarn path from the yarn feed roller to the contact roller located on the upper side is greater than the inclination angle with respect to the vertical direction of the yarn path from the yarn feed roller to the contact roller located on the lower side. Also large,
A yarn winding machine, wherein the downstream facing surface of the downstream guide rail of the winding section disposed at least on the upper side includes the retraction surface. A yarn winding machine according to any one of claims 1 to 4,
When the direction in which the yarn feeding roller is positioned with respect to the yarn winding machine is the height direction,
A yarn winding machine comprising a lifting device that raises and lowers the traverse guide relative to the contact roller. A thread winding machine according to any one of claims 1 to 5,
When viewed in the axial direction of the package, the thread winding machine is characterized in that a thread threading position for threading the bobbin is on the traverse guide side with respect to the contact roller.

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