JP7354192B2 - winding device - Google Patents

Description

The present invention relates to a thread winding device for winding a thread onto a bobbin while traversing the thread using a guide device.

Traditionally, tape-shaped yarns with a flat cross-sectional shape are known, which are made by aggregating multiple fibers into bundles, such as carbon fibers. Various thread winding devices are known (for example, see Patent Documents 1 and 2).

These winding devices include a guide support that reciprocates along the axial direction of the bobbin, and a plurality of guide rollers that are arranged in line with the guide support in a manner that intersects with the running direction. It is traversed by the reciprocating movement of the support part, and is sent out while being guided by each guide roller in sequence, thereby being wound onto a bobbin.

In order to obtain a high-quality package (thread wound on a bobbin) with a uniform end face shape and no twist in the wound fibers, the guide rollers installed in the guide device are extremely important. In particular, stabilizing the running position of the yarn in the guide device is directly linked to the shape of the end surface of the package.

At this time, if guide rolls that are gently curved on both sides in the axial direction are used, the running position of the yarn can be stabilized. (large diameter portion) may come into contact with each other and cause twisting, which is undesirable.

In recent years, in order to improve the quality of packages, there has been a demand for carbon fibers of 3K or less, called small tow, to be rolled up in a flat shape without twisting. In order to stably run threads such as carbon fibers, which are thin and have a small contact area with the guide rollers, using the guide device, it is effective to increase the number of guide rollers along the running direction.

Japanese Patent Application Publication No. 10-330038 Japanese Patent Application Publication No. 2004-155590

However, as mentioned above, if the number of guide rollers in the guide device is increased, the running of the yarn in the guide device becomes stable, but as the number of guide rollers increases, the task of threading the guide rollers becomes complicated and time consuming. There was a problem that it took a lot of time and the work efficiency decreased.

Specifically, as shown in FIG. 7, first, second and third guide rollers 141' to 143' are arranged in parallel from the upstream side to the downstream side in the running direction on the guide support section. In the case of a device in which the thread is used, first, hold the yarn with one hand F and place it between the first guide roller 141' and the second guide roller 142' while wrapping it around the rear circumferential surface of the first guide roller 141'. After passing through the front side circumferential surface of the second guide roller 142', it passes between the second guide roller 142' and the third guide roller 143', and finally after the third guide roller 143'. The threading work is completed by hanging it on the side surface. When passing between the second guide roller 142' and the third guide roller 143' in the second half of this threading operation, the thread held by one hand F was pulled out to near the tip of the second guide roller 142'. Also, the yarn is inserted between the second guide roller 142' and the third guide roller 143', but at this time, the yarn especially slips off the tip of the second guide roller 142'. There was a case.

Of course, when passing the yarn between the second guide roller 142' and the third guide roller 143', in order to prevent the yarn from slipping off the tip of the second guide roller 142', It is conceivable to use one hand F to hold down the thread hanging on the front circumferential surface of the second guide roller 142', but using both hands to thread the thread is complicated and may cause careless contact with the thread. There was a risk that unnecessary twisting, wrinkles, stains, and damage would occur.

Particularly, at a thread winding site, where a large number of thread winding devices are installed, a decrease in thread winding efficiency has a large effect on the product yield, leading to a decrease in package production efficiency.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a thread winding device that can easily and reliably hang a thread on a guide portion of a guide mechanism.

To achieve the above object, the present invention provides a thread winding device for winding a thread onto a bobbin while traversing the thread using a guide mechanism, wherein the guide mechanism includes a guide mechanism that reciprocates along the axial direction of the bobbin. a support section, a columnar first guide section supported by the guide support section in a manner that intersects with the running direction of the yarn, and a columnar first guide section that is arranged in parallel with the first guide section while being separated from the first guide section by a predetermined distance. A column-shaped second guide part supported by a support part, and a column-shaped third guide part supported by the guide support part in a manner parallel to the second guide part while being separated from the second guide part by a predetermined distance. , the second guide part is configured such that its distal end protrudes further in the axial direction than the distal end of the first guide part, and the thread extends along one side circumferential surface of the first guide part. After passing between the first guide part and the second guide part, it is hung on the other side circumferential surface of the second guide part, and the second guide part and the third guide part It is characterized in that it is guided in the running direction by passing between the guide parts and hanging on the circumferential surface of one side of the third guide part. Note that "parallel" in the present invention includes not only completely parallel but also substantially parallel.

According to this, when the thread is passed between the second guide part and the third guide part of the guide mechanism, the thread becomes difficult to slip off the tip of the second guide part, so that the guide mechanism's guide The thread can be easily and reliably hung on the section.

Further, the tip of the second guide portion is arranged in an axial direction with respect to a line connecting a fulcrum of the yarn upstream of the first guide portion and a tip of the third guide portion. It may be configured to protrude from the top. According to this, when the thread is passed between the second guide part and the third guide part of the guide mechanism, it is possible to reliably prevent the thread from slipping off the tip of the second guide part. .

Further, the tip of the first guide section is axially oriented with respect to a line connecting the fulcrum of the yarn on the upstream side of the first guide section and the tip of the third guide section. It may be configured to protrude. According to this, when the thread is passed between the second guide part and the third guide part of the guide mechanism, it is possible to reliably prevent the thread from slipping off the tip of the first guide part. .

Further, the third guide portion may be configured such that a distal end portion thereof protrudes further in the axial direction than a distal end portion of the second guide portion. According to this, even if the gap between the third guide part and the guide main body part of the guide mechanism is narrow, the yarn can be easily and reliably passed between the second guide part and the third guide part.

Further, at least one of the first, second, and third guide portions may include a guide body portion formed in a columnar shape and a guide tip portion formed in a conical shape. According to this, the thread can be easily and reliably hung on the guide part by guiding the thread along the conical peripheral surface of the guide tip of the guide part to the guide body part.

Further, at least one of the first, second, and third guide portions may have a step portion that protrudes radially outward at a boundary portion between the guide body portion and the guide tip portion. . According to this, when the yarn is hung on the guide part of the guide mechanism, even if it is pulled out to the vicinity of the tip of the guide part, it will be caught on the stepped part of the guide part, so it is ensured that the yarn will slip off the guide part. can be prevented.

Further, the guide tip portion may be detachably provided to the guide body portion. According to this, if the guide tip part is attached to the guide body part, the guide part consisting of the guide tip part and the guide body part can be easily constructed, but if the guide tip part is removed from the guide body part, the guide part can be easily configured. A normal guide part without a tip can be easily constructed.

According to the present invention, when the thread is passed between the second guide part and the third guide part of the guide mechanism, the thread becomes difficult to slip off the tip of the second guide part. The thread can be easily and reliably hung on the guide part. Therefore, the threading operation in the thread winding device becomes faster, and it becomes possible to improve the production efficiency of the package.

1 is a perspective view of a thread winding device (with a package) according to an embodiment of the present invention. It is a front view of a winding device (without a package). It is a side view of a winding device (without a package). FIG. 6 is a conceptual diagram for explaining the degree of protrusion of the tip of each guide roller in the lower guide group of the thread winding device. FIG. 2 is a perspective view showing a state of threading work in the present device. FIG. 7 is a perspective view and a cross-sectional view of a guide roller according to another embodiment. FIG. 2 is a perspective view showing a state of thread threading work in a conventional thread winding device.

Next, an embodiment of a thread winding device (hereinafter referred to as the present device) according to the present invention will be described with reference to FIGS. 1 to 5. In this embodiment, as the yarn, a tape-shaped yarn L having a flat cross-sectional shape, which is made up of a plurality of fibers assembled into a bundle, such as carbon fiber, is used. Further, the vertical direction in FIG. 2 will be described as the vertical direction of the present device, the left-right direction in FIG. 2 will be referred to as the left-right direction of the present device, and the left-right direction in FIG. 3 will be referred to as the front-back direction of the present device.

As shown in FIGS. 1 to 3, this device includes a guide mechanism 1 that guides the yarn L, a traverse mechanism 2 that reciprocates the guide mechanism 1, and a bobbin 3 that winds the yarn L. By moving the guide mechanism 1 in the axial direction of the bobbin 3 using the mechanism 2, the yarn L is wound around the bobbin 3 while being traversed.

The guide mechanism 1 includes a guide support part 11 that supports various guide rollers to be described later, an upper guide group 12 arranged above the guide support part 11, and an intermediate guide arranged in the middle part of the guide support part 11. group 13 and a lower guide group 14 disposed below the guide support section 11, and the yarn L travels while being guided in the order of the upper guide group 12, the intermediate guide group 13, and the lower guide group 14. Note that the lower guide group 14 is arranged at the most downstream position closest to the bobbin 3 than the other guide groups 12 and 13.

The guide support section 11 includes a support plate main body 110 that extends above the bobbin 3 in an upward direction orthogonal to the axial direction of the bobbin 3, and an upper support that is provided on the upper part of the support plate main body 110 and supports the upper guide group 12. A plate 111 , an intermediate support plate 112 that is provided at an intermediate portion of the support plate main body 110 and supports the intermediate guide group 13 , and a lower support plate that is provided at the bottom of the support plate main body 110 and supports the lower guide group 14 . 113.

In addition, the guide support portion 11 has a guide 114 provided below the intermediate support plate 112, and the guide 114 engages with the guide rail 4 provided parallel to the axial direction of the bobbin 3. The whole is slidably supported on a guide rail 4. Further, in the guide support section 11, a stator 115 is provided on a lower support plate 113, and is fixed to a camshaft 21 of a traverse mechanism 2, which will be described later.

The upper guide group 12 includes a pair of solid or hollow cylindrical guide rollers 121 and 122 extending in the front-rear direction perpendicular to the axial direction of the bobbin 3 in plan view. The guide rollers 121 and 122 are both rotatably supported at their base ends by the upper support plate 111, and are arranged in parallel vertically with a predetermined distance apart along the running direction of the yarn L. . As a result, the yarn L is hung on the left circumferential surface of the upper guide roller 121, passed between the upper guide roller 121 and the lower guide roller 122, and then wrapped around the right circumferential surface of the lower guide roller 122. By being hung, the thread L is guided along the running direction of a predetermined thread L while the surface of the thread L is oriented in the axial direction (horizontal direction) of the bobbin 3 .

The intermediate guide group 13 includes a pair of solid or hollow cylindrical guide rollers 131 and 132 that extend in a direction intersecting the axial direction of the bobbin 3 at an angle of 45 degrees when viewed from above. The guide rollers 131 and 132 are both rotatably supported at their base ends by the intermediate support plate 112, and are arranged in parallel vertically with a predetermined distance apart along the running direction of the yarn L. There is. As a result, the yarn L is hung on the front circumferential surface of the upper guide roller 131, passed between the upper guide roller 131 and the lower guide roller 132, and then As a result, the surface of the yarn L is twisted at an angle of 45 degrees and guided along a predetermined running direction of the yarn L.

The lower guide group 14 includes a set of three solid or hollow cylindrical guide rollers 141 to 143 that extend parallel to the axial direction of the bobbin 3 in plan view. These guide rollers 141 to 143 have their base ends rotatably supported by the lower support plate 113, and are arranged in parallel along the running direction of the yarn L at a predetermined distance apart.

Specifically, the upper first guide roller 141 is arranged above the bobbin 3 so as to extend in the axial direction of the bobbin 3, and the intermediate second guide roller 142 is arranged directly below the first guide roller 141. The lower third guide roller 143 is arranged to extend in the axial direction of the bobbin 3, and the lower third guide roller 143 is located below the second guide roller 142 and slightly behind the second guide roller 142 in the axial direction of the bobbin 3. It is arranged to extend to. The first guide roller 141, the second guide roller 142, and the third guide roller are all formed to have a length within the range of 40 to 80 mm, a diameter within the range of 12 to 21 mm, and a diameter of 15 mm to 30 mm. They are arranged side by side at intervals within the range of .

As a result, the yarn L is hung on the rear circumferential surface of the first guide roller 141, passed between the first guide roller 141 and the second guide roller 142, and then transferred to the second guide roller 142. , passed between the second guide roller 142 and the third guide roller 143, and hung on the rear circumference of the third guide roller 143, so that the surface of the yarn L is It is guided along the running direction of a predetermined thread L while facing in the front-back direction perpendicular to the axial direction of the bobbin 3. Note that after the surface of the thread L is twisted at 45 degrees in the intermediate guide group 13, it is further twisted at an angle of 45 degrees in the lower guide group 14, so as a result, the thread L is twisted from the upper guide group 12 to the lower guide group. 14, the surface will be twisted at a 90 degree angle.

In this embodiment, the second guide roller 142 is formed longer than the first guide roller 141 in the axial direction, so that the tip thereof protrudes further in the axial direction than the tip of the first guide roller 141. It is configured as follows. According to this, when the yarn L is passed between the second guide roller 142 and the third guide roller 143 of the guide mechanism 1, as shown in FIG. Since it is difficult to slip off from the tip, the yarn L can be easily and reliably hung on the lower guide group 14 of the guide mechanism 1.

Furthermore, regarding the degree of protrusion of the tip of the second guide roller 142, as shown in FIG. It is preferable that the tip portion of the second guide roller 142 is configured to protrude in the axial direction with respect to a line segment connecting the tip portion (in this embodiment, the tip portion S located at the lowest position on the tip surface). . Note that the fulcrum S of the yarn L refers to the fulcrum S at which the yarn L does not generally move when the yarn L is pulled out toward the tip end when the yarn L is hung on the lower guide group 14, and in this embodiment. Then, the planned running position of the yarn L on the lower guide roller 132 of the intermediate guide group 13 becomes the fulcrum S of the yarn L.

Furthermore, regarding the degree of protrusion of the tip of the first guide roller 141, as shown in FIG. It is preferable that the tip of the first guide roller 141 is configured to protrude in the axial direction with respect to the line segment connecting the two parts. According to this, when passing the yarn L between the second guide roller 142 and the third guide roller 143 of the guide mechanism 1, it is ensured that the yarn L slips off the tip of the first guide roller 141. can be prevented.

Further, the third guide roller 143 is formed longer than the second guide roller 142 in the axial direction, so that the tip thereof protrudes further in the axial direction than the tip of the second guide roller 142. has been done. According to this, even if the gap between the third guide roller 143 of the guide mechanism 1 and the main body of the device is narrow, the thread L can be easily and reliably passed between the second guide roller 142 and the third guide roller 143. be able to.

As shown in FIG. 1, the traverse mechanism 2 has a camshaft 21 extending in the axial direction of the bobbin 3, and the base end of the camshaft 21 is connected to a drive mechanism (not shown), and The tip of the shaft 21 is connected to the stator 115 of the guide supporter 11 . As a result, when the camshaft 21 is reciprocated in the axial direction of the bobbin 3 by the drive mechanism, the entire guide mechanism 1 is also reciprocated along the axial direction of the bobbin 3, so that the yarn L is moved by the guide mechanism 1. It is wound around the bobbin 3 while being traversed, and a package P having a predetermined shape is formed. Note that, as shown in FIG. 1, a contact pressure roller 5 is provided that contacts the circumferential surface of the package P in which the yarn L is wound around the bobbin 3.

Next, the threading operation of the yarn L in this device will be explained.

First, the end of the thread L is grasped with one hand F, and the thread L is hung on the guide rollers 121 and 122 of the upper guide group 12. Specifically, the thread L is hung around the left side circumferential surface of the upper guide roller 121, inserted between the upper guide roller 121 and the lower guide roller 122, and then passed around the right side circumference of the lower guide roller 122. Hang it on the surface. At this time, since the upper guide group 12 consists of only two guide rollers 121 and 122, even if the guide rollers 121 and 122 are formed to have the same length, the thread L is moved to the upper guide roller 121. You can hang it up without it slipping off.

Next, the yarn L is pulled out downward and is hung on the guide rollers 131 and 132 of the intermediate guide group 13. Specifically, the thread L is hung on the front circumferential surface of the upper guide roller 131, inserted between the upper guide roller and the lower guide roller 132, and then wrapped around the rear circumferential surface of the lower guide roller 132. Multiply. At this time, since the upper guide group 12 consists of only two guide rollers 131 and 132, even if the guide rollers 131 and 132 are formed to have the same length, the thread L is moved to the upper guide roller 131. You can hang it up without it slipping off.

Next, the yarn L is pulled out further downward and is hung on the guide rollers 141 to 143 of the lower guide group 14. Specifically, the yarn L is hung around the rear peripheral surface of the first guide roller 141, inserted between the first guide roller 141 and the second guide roller 142, and then passed through the second guide roller 141. 142 , insert it between the second guide roller 142 and the third guide roller 143 , and hang it on the rear circumferential surface of the third guide roller 143 .

At this time, since the lower guide group 14 consists of a set of three guide rollers 141 to 143, when passing the thread between the second guide roller 142 and the third guide roller 143 in the latter half of this threading operation, one hand After pulling out the yarn L gripped by the second guide roller 142 to near the tip of the second guide roller 142, the thread L is inserted between the second guide roller 142 and the third guide roller 143. If the second guide roller 142 is formed to have the same length as the first guide roller 141, as shown in FIG. There was a case.

In this regard, in the present embodiment, the second guide roller 142 is formed longer in the axial direction than the first guide roller 141, so that the tip portion thereof is longer than the tip portion of the first guide roller 141 in the axial direction. As shown in FIG. 5, when the yarn L is passed between the second guide roller 142 and the third guide roller 143, the yarn L protrudes from the second guide roller In order to prevent the thread L from slipping off the tip of the thread 142, the thread L can be easily and reliably hung on the lower guide group 14.

In this embodiment, the lower guide group 14 is made up of a set of three guide rollers, but it may be made up of four or more guide rollers.

Furthermore, in the lower guide group 14, the second guide roller 142 is formed to be longer in the axial direction than the first guide roller 141, but its tip is longer than the tip of the first guide roller 141. As long as it is configured to protrude in the axial direction, it may be formed to have the same length as the first guide roller 141 or to be shorter.

Further, the third guide roller 143 was configured such that the tip of the third guide roller 143 protruded in the axial direction more than the tip of the second guide roller 142; 142 may be configured so as not to protrude further in the axial direction.

Further, although the guide rollers 141 to 143 are formed in a columnar shape with a flat end surface, they may be formed in other columnar shapes.

Further, as shown in FIG. 6, the first, second, and third guide rollers 141 to 143 include a guide body portion 14a formed in a columnar shape and a guide tip portion 14b formed in a conical shape. may be configured. According to this, by guiding the yarn L along the conical circumferential surface of the guide tip portion 14b of the guide rollers 141 to 143 to the guide body portion 14a, the yarn L can be easily transferred to the guide rollers 141 to 143. And it can be hung securely.

Furthermore, as shown in FIG. 6, the first, second, and third guide rollers 141 to 143 may have a stepped portion 14c that projects in the radial direction at the boundary between the guide body portion 14a and the guide tip portion 14b. good. For example, the first, second, and third guide rollers 141 to 143 are formed by forming the outer diameter of the base end portion of the guide tip portion 14b larger than the outer diameter of the tip portion of the guide body portion 14a. An example of this is to form a stepped portion 14c that protrudes in the radial direction at the boundary between the guide tip portion 14b and the guide tip portion 14b. According to this, when the yarn L is hung on the guide rollers 141 to 143 of the guide mechanism 1, even if it is pulled out to the vicinity of the tips of the guide rollers 141 to 143, it will not be caught on the stepped portions 14c of the guide rollers 141 to 143. Therefore, it is possible to reliably prevent the yarn L from slipping off the guide rollers 141 to 143.

Further, the guide rollers 141 to 143 may be provided with guide tip portions 14b removably attached to the guide body portion 14a, as shown in FIG. According to this, by attaching the guide tip portion 14b to the guide body portion 14a, a guide roller consisting of the guide tip portion 14b and the guide body portion 14a can be easily constructed. By removing it from 14a, it is possible to easily configure normal guide rollers 141 to 143 without guide tip portion 14b.

Furthermore, although a roller type guide unit that guides the yarn L is used as a guide unit that can rotate on an axis, a fixed type unit that does not rotate on an axis may also be used.

We prepared the following conventional device and this device and verified the threading work.

<Conventional device>
The same upper guide group 12 and intermediate guide group 13 as in this embodiment are provided, and the lower guide group 14' is provided with a first guide roller 141', a second guide roller 142' and a third guide roller under the following conditions. 143' was rotatably connected to the same surface of the guide support part 11 (see FIG. 7).

・The length of the first guide roller 141' is X mm (53 mm), and the diameter is 15 mm.
- Second guide roller 142' length: Xmm, diameter: 15mm
・The length of the third guide roller 143' is X mm, and the diameter is 15 mm.
- Distance between first guide roller 141' and second guide roller 142': 30 mm
- Distance between second guide roller 142' and third guide roller 143': 20 mm

<This device>
The same upper guide group 12, intermediate guide group 13, and lower guide group 14 as in this embodiment are provided, and as the lower guide group 14', a first guide roller 141, a second guide roller 142, and a third guide roller are provided under the following conditions. A guide roller 143 is rotatably connected to the same surface of the guide support portion 11 (see FIG. 5).

・Length of the first guide roller 141: Xmm (53mm), diameter: 15mm
・Length of second guide roller 142: Xmm + 10mm, diameter: 15mm
・Length of the third guide roller 143: Xmm + 20mm, diameter: 15mm
- Distance between first guide roller 141 and second guide roller 142: 30 mm
- Distance between second guide roller 142 and third guide roller 143: 20 mm

<Verification method>
In the above-mentioned conventional device and the present device, 10 workers moved the first guide roller 141 (141') and the second guide of the upper guide group 12, the intermediate guide group 13, and the lower guide group 14 (14'). The thread L was threaded in the order of the roller 142 (142') and the third guide roller 143 (143'), and the time for each thread threading work was measured. Staff members also spent less time threading. Furthermore, when the average of the threading work of the conventional device and this device was calculated, it was confirmed that the time required for threading work was reduced by 54% on average.

Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as the present invention or within an equivalent scope.

DESCRIPTION OF SYMBOLS 1... Guide mechanism 11... Guide support part 110... Support plate main body 111... Upper support plate 112... Intermediate part support plate 113... Lower support plate 114... Guide element 115... Stator 12... Upper guide group 121... Upper guide roller 122 ...Lower guide roller 13...Middle guide group 131...Upper guide roller 132...Lower guide roller 14...Lower guide group 141...First guide roller (first guide part)
142...Second guide roller (second guide part)
143...Third guide roller (third guide part)
2...Traverse mechanism 21...Camshaft 3...Bobbin 4...Guide rail 5...Contact pressure roller

Claims (3)

In a thread winding device for winding a thread onto a bobbin while traversing the thread using a guide mechanism,
The guide mechanism is
a guide supporter that reciprocates along the axial direction of the bobbin;
a columnar first guide part supported by the guide support part in a manner crossing the running direction of the yarn;
a columnar second guide part supported by the guide support part in a manner parallel to the first guide part while being separated from the first guide part by a predetermined distance;
a columnar third guide part supported by the guide support part in a manner parallel to the second guide part while being separated from the second guide part by a predetermined distance;
The second guide portion is configured such that a distal end portion thereof protrudes further in the axial direction than a distal end portion of the first guide portion,
The second guide part has a distal end part that protrudes in the axial direction with respect to a line connecting a fulcrum of the yarn upstream of the first guide part and a distal end part of the third guide part. is configured to
The third guide portion is configured such that a distal end portion thereof protrudes further in the axial direction than a distal end portion of the second guide portion,
After the thread is hung around one side circumference of the first guide part and passed between the first guide part and the second guide part, the thread is hung around the other side circumference of the second guide part. The vehicle is hung on a surface, passed between the second guide part and the third guide part, and is guided in the traveling direction by being hung on one side circumferential surface of the third guide part. winding device. In a thread winding device for winding a thread onto a bobbin while traversing the thread using a guide mechanism,
The guide mechanism is
a guide supporter that reciprocates along the axial direction of the bobbin;
a columnar first guide part supported by the guide support part in a manner crossing the running direction of the yarn;
a columnar second guide part supported by the guide support part in a manner parallel to the first guide part while being separated from the first guide part by a predetermined distance;
a columnar third guide part supported by the guide support part in a manner parallel to the second guide part while being separated from the second guide part by a predetermined distance;
The second guide portion is configured such that a distal end portion thereof protrudes further in the axial direction than a distal end portion of the first guide portion,
The second guide part has a distal end part that protrudes in the axial direction with respect to a line connecting a fulcrum of the yarn upstream of the first guide part and a distal end part of the third guide part. is configured to
At least one of the first, second, and third guide portions includes a guide body portion formed in a columnar shape and a guide tip portion formed in a conical shape,
At least one of the first, second, and third guide portions is configured such that the outer diameter of the proximal end portion of the guide tip portion is larger than the outer diameter of the tip portion of the guide body portion. A step portion protruding outward in the radial direction is formed at a boundary portion between the guide body portion and the guide tip portion,
After the thread is hung around one side circumference of the first guide part and passed between the first guide part and the second guide part, the thread is hung around the other side circumference of the second guide part. The vehicle is hung on a surface, passed between the second guide part and the third guide part, and is guided in the traveling direction by being hung on one side circumferential surface of the third guide part. winding device. In a thread winding device for winding a thread onto a bobbin while traversing the thread using a guide mechanism,
The guide mechanism is
a guide supporter that reciprocates along the axial direction of the bobbin;
a columnar first guide part supported by the guide support part in a manner crossing the running direction of the yarn;
a columnar second guide part supported by the guide support part in a manner parallel to the first guide part while being separated from the first guide part by a predetermined distance;
a columnar third guide part supported by the guide support part in a manner parallel to the second guide part while being separated from the second guide part by a predetermined distance;
The second guide portion is configured such that a distal end portion thereof protrudes further in the axial direction than a distal end portion of the first guide portion,
The second guide part has a distal end part that protrudes in the axial direction with respect to a line connecting a fulcrum of the yarn upstream of the first guide part and a distal end part of the third guide part. is configured to
At least one of the first, second, and third guide portions includes a guide body portion formed in a columnar shape and a guide tip portion formed in a conical shape,
The guide tip portion is removably provided with respect to the guide body portion,
After the thread is hung around one side circumference of the first guide part and passed between the first guide part and the second guide part, the thread is hung around the other side circumference of the second guide part. The vehicle is hung on a surface, passed between the second guide part and the third guide part, and is guided in the traveling direction by being hung on one side circumferential surface of the third guide part. winding device.