JP2021123458A - Yarn winding machine - Google Patents

Abstract

To provide a yarn winding machine comprising a bobbin holder loaded with a plurality of bobbins and adapted to suppress the air resistance to a package during winding of a yarn and to diminish consumption power.SOLUTION: A yarn winding machine 4 according to the present invention comprises: a bobbin holder 24 that is rotatably supported on a machine base 20 and extends in an axial direction along a horizontal direction so that a plurality of bobbins B are axially arranged and loaded to respectively wind a plurality of yarns; a contact roller 25 that extends along an axial direction and abuts against outer peripheral surfaces of a plurality of packages P formed respectively by winding the plurality of yarns Y on the plurality of bobbins B; and a first cover part 41 that is provided in an upstream region with respect to a rotating direction of the packages P more than contact points C between the plurality of packages P and the contact roller 25 and induces the air moving toward the contact point C in accordance with the rotation of the packages P to gaps between adjacent packages P.SELECTED DRAWING: Figure 2

Description

The present invention relates to a thread winder for winding a thread.

Patent Document 1 discloses a thread winder for winding a thread. As shown in FIG. 10, the thread winder 104 includes a bobbin holder 124 that is cantilevered and extends in the horizontal direction on the machine base, and a plurality of bobbins B'mounted side by side in the axial direction of the bobbin holder 124. Further, the contact roller 125 is further provided to apply a contact pressure to the plurality of packages P'formed by winding the plurality of threads Y on the plurality of bobbins B'. The thread winder 104 has a configuration in which the thread is wound by rotating the bobbin holder 124, and the diameter of the package P'is increased as the thread is wound on the bobbin B'.

Here, for example, in the yarn winder 104 of Patent Document 1, when the bobbin holder 124 is rotated when winding the yarn Y, an accompanying flow F (air flow) is generated along the outer peripheral surfaces of the plurality of packages P'. .. A part of this accompanying flow F is separated from the outer peripheral surface of the package P'as the package P'rotates (separated air f in FIG. 10), and a portion where the air density becomes low is formed on the outer peripheral surface of the package P'. Occurs. Then, air is drawn from the space around the package P'toward the portion where the air density is low. The air drawn in at this time becomes the air resistance applied to the package P'. The air resistance applied to the package P'becomes a load when rotating the bobbin holder 124, which causes an increase in power consumption when winding the yarn Y.

For example, in Patent Document 2, a reel tube (bobbin) extending parallel to the projecting direction of the take-up spindle (bobbin holder) and attached to the take-up spindle is formed by winding a thread. A thread winder provided with a shielding panel extending in the circumferential direction of the reel (package) is described. The shielding panel is provided with an air guide panel extending along the circumferential direction of the reel. By providing a shielding panel provided with an air guide panel, the load caused by the accompanying flow can be reduced.

Japanese Unexamined Patent Publication No. 2018-203472 DE102016014977

Here, Patent Document 2 describes that the accompanying flow generated by the rotating reel is separated by the air guide panel provided in the shielding panel and guided in the circumferential direction of the reel. That is, in the thread winder of Patent Document 2, the shielding panel is arranged in the region on the downstream side in the rotation direction of the reel. Therefore, in the thread winder of Patent Document 2, it is not possible to suppress the peeling of the accompanying flow toward the vicinity of the contact point between the package (reel) and the pressing roller from the outer peripheral surface of the package. In particular, as the diameter of the package increases and the peripheral area increases as the yarn is wound, the amount of air separated from the outer peripheral surface of the rotating package increases, and the air resistance applied to the package also increases, so that the power consumption further increases. ..

Further, in recent years, thread winders tend to have multiple ends of winding bobbins in order to wind more threads at the same time. There is a great need for reducing power consumption.

An object of the present invention is to suppress air resistance applied to a package when winding a yarn in a yarn winder provided with a bobbin holder to which a plurality of bobbins are mounted, and to reduce power consumption.

The thread winder of the first invention has a machine base and a plurality of bobbins rotatably supported by the machine base and extending in the axial direction along the horizontal direction, and a plurality of bobbins on which a plurality of threads are wound are respectively in the axial direction. A bobbin holder mounted side by side, a contact roller extending along the axial direction, and a contact roller abutting on an outer peripheral surface of a plurality of packages formed by winding the plurality of threads on the plurality of bobbins, and the plurality of packages. A first cover portion provided in at least a part of a region on the upstream side in the rotation direction of the package with respect to the contact point with the contact roller and provided along the circumferential direction of the plurality of packages. Is to be.

According to the present invention, the accompanying flow is guided to the inner peripheral surface of the first cover portion and flows toward the contact point along the outer peripheral surface of the plurality of packages. Therefore, it is possible to prevent air from separating from the outer peripheral surfaces of the plurality of rotating packages. As a result, the air resistance applied to the package when the yarn is wound can be suppressed, and the power consumption can be reduced.

In the first invention, the thread winder of the second invention is provided with at least a part of the first cover portion in the lower half region in the vertical direction of the entire circumference of the plurality of packages. It is characterized by being present.

Most of the accompanying flow toward the vicinity of the contact point is exfoliated in the lower half region of the entire circumference of the plurality of packages. According to the present invention, since the first cover portion covers the lower half region of the entire circumference of the plurality of packages, the separation of the accompanying flow can be more reliably suppressed.

The thread winder of the third invention is characterized in that, in the second invention, the first cover portion is provided within a range of 225 degrees along the circumferential direction from the contact point. be.

If the first cover portion is arranged over a wide area around the entire circumference of the package, the weight of the entire thread winder increases, and the thread winder tends to swing when the thread is wound. Doing so may reduce the package quality. According to the present invention, the first cover portion is provided in the region on the upstream side in the rotation direction from the contact point over a range of 225 degrees or less along the circumferential direction from the contact point, so that the accompanying flow toward the vicinity of the contact point can be generated. It is possible to suppress an increase in the weight of the thread winder while suppressing peeling. Therefore, the package quality can be ensured while reducing the power consumption.

In the second and third inventions of the fourth invention, the first cover portion is provided in the lower half region in the vertical direction of the entire circumference of the plurality of packages. It is characterized by that.

Vibration during rotation of the package is transmitted to the first cover portion, and the first cover portion may bend downward under the force of gravity. If the first cover portion is provided in the upper half region of the entire circumference of the package, the downwardly bent first cover portion may come into contact with the package. According to the present invention, since the first cover portion is provided in the lower half region of the entire circumference of the package, the first cover portion bent downward does not come into contact with the package. As a result, the package quality can be ensured more reliably.

In the first to fourth inventions, the thread winder of the fifth invention is provided in a region upstream of the contact in the rotation direction and in a region downstream of the first cover portion in the rotation direction. It is characterized by further including a second cover portion that guides air toward the contact point into a gap between adjacent packages as the package rotates.

According to the present invention, the second cover portion guides the accompanying flow toward the vicinity of the contact point into the gap between adjacent packages while avoiding peeling from the outer peripheral surface of the package due to collision with the contact roller. As a result, it is possible to further suppress the separation of air from the outer peripheral surfaces of the plurality of rotating packages, and further reduce the power consumption.

In the fifth aspect of the invention, the thread winder of the sixth invention has the second cover portion in the shape of a flat plate, and is provided within 25 degrees from the tangent line passing through the contact with the contact as the center. It is characterized by being present.

According to the present invention, the accompanying flow toward the contact point can be reliably guided by the gap between the adjacent packages, and the power consumption can be further reduced.

The thread winder of the seventh invention is characterized in that, in the fifth invention, the second cover portion is provided along the circumferential direction of the package.

According to the present invention, more of the accompanying flow toward the contacts can be sent into the gaps between adjacent packages, and power consumption can be further reduced.

The thread winder of the eighth invention is characterized in that, in the first to seventh inventions, the first cover portion is provided over a range of 90 degrees or more along the circumferential direction. Is.

According to the present invention, since the first cover portion can protect a wider range of the outer peripheral surfaces of the plurality of packages, it is possible to further suppress the separation of air from the outer peripheral surfaces of the plurality of rotating packages. , Power consumption can be further reduced.

In the first to eighth inventions, the yarn winder of the ninth invention has the diameter of the first cover portion along the outer peripheral surface of the package, which increases in diameter as the yarn is wound. It is characterized by being variable.

In the present invention, it is possible to suppress the accompanying flow from peeling from the outer peripheral surfaces of the plurality of packages from the initial stage of the start of winding of the yarn, and it is possible to further reduce the power consumption.

In the fifth to ninth inventions, the thread winder of the tenth invention has the first cover portion and the second cover portion extending along the axial direction, and the gap between adjacent packages. It is characterized by covering everything.

In the present invention, the first cover portion and the second cover portion are provided without gaps along the axial direction, respectively. Therefore, it is possible to prevent the accompanying flow from peeling from the outer peripheral surface of the package toward the outside in the radial direction of the package through the gap along the axial direction. As a result, it is possible to further suppress the separation of the accompanying flow from the outer peripheral surfaces of the plurality of packages, and it is possible to further reduce the power consumption.

In the tenth aspect of the invention, the thread winder of the eleventh invention states that both ends of the first cover portion and the second cover portion in the axial direction are outside of both ends in the axial direction of the package. It is a feature.

In the present invention, it is possible to prevent the accompanying flow from peeling from the outer peripheral surfaces of the packages at both ends of the rotating package toward the outside in the axial direction. As a result, the power consumption can be further reduced.

In the fifth to eleventh inventions, the thread winder of the twelfth invention has the bobbin holder between the thread winding position where the thread is wound and the standby position where the thread is not wound. It is movable and has a moving mechanism for retracting the first cover portion and the second cover portion from the movement locus when the bobbin holder moves between the thread winding position and the standby position. Is to be.

In a thread winder equipped with two bobbin holders, every time the thread winding work on a plurality of bobbins mounted on the bobbin holder is completed, the work of exchanging the bobbin holder in the thread winding position and the bobbin holder in the standby position is performed. Will be done. In the present invention, the bobbin holder can be smoothly replaced by retracting the first cover portion and the second cover portion from the movement locus.

The thread winder of the thirteenth invention is characterized in that, in the twelfth invention, the first cover portion and the second cover portion are formed independently of each other.

When the first cover portion and the second cover portion are retracted from the movement locus, when the first cover portion and the second cover portion are formed independently as in the present invention, the first cover portion and the second cover portion are formed. 2 It can be moved in a space-saving manner as compared with the case where the cover portion is integrally formed. As a result, it is possible to suppress an increase in the size of the entire thread winder.

The thread winder of the fourteenth invention is characterized in that, in the fifth to twelfth inventions, the first cover portion and the second cover portion are integrally formed.

In the present invention, it is possible to prevent the accompanying flow from peeling from the outer peripheral surfaces of the plurality of packages through the gap between the first cover portion and the second cover portion, and the air resistance can be further reduced. As a result, the power consumption can be further reduced.

In a thread winder provided with a bobbin holder equipped with a plurality of bobbins, power consumption can be reduced even if the diameter of the package is increased due to the winding of the thread.

It is a side view of the spinning take-back device which has the thread take-up machine which concerns on this embodiment. It is a front view of a thread winder. It is a partial front view of the thread winder explaining the accompanying flow which flows along the outer peripheral surface of a package by the 1st cover part. It is a partial perspective view of the thread winder explaining the accompanying flow which is guided to the gap between adjacent packages by the 2nd cover part. It is a front view of the thread winder in a state where the 1st cover part and the 2nd cover part are retracted from the movement locus of a bobbin holder. It is a front view of the thread winder which concerns on 1st modification. In the first modification, it is the front view of the thread winder when the diameter of a package is expanded. It is a front view of the thread winder which concerns on the 2nd modification. It is a front view of the thread winder which concerns on Comparative Example 3. It is a front view of the conventional thread winder, and is the figure for demonstrating the accompanying flow peeling off from the outer peripheral surface of a package.

(Overall configuration of take-back device 1)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a take-up device 1 having a bobbin winder 4 according to the present embodiment. Hereinafter, the vertical direction of the paper surface in FIG. 1 is referred to as the vertical direction, and the horizontal direction of the paper surface is referred to as the front-rear direction. Further, the direction perpendicular to the paper surface of FIG. 1 is the left-right direction, the front side of the paper surface is the right side, and the back side is the left side. In FIG. 1, the description of the first cover portion 41 and the second cover portion 51, which will be described later, is omitted.

The take-up device 1 winds the first godet roller 8, the second godet roller 9, and the yarn regulation guide 7 for taking up the yarn Y spun from the spinning apparatus 3 and the taken-up yarn Y on a plurality of bobbins B. A yarn winder 4 for forming a plurality of packages P is provided.

The first godet roller 8 is a roller whose axial direction is substantially parallel to the left-right direction, and is arranged above the front end portion of the thread winder 4. The first godet roller 8 is rotationally driven by a motor (not shown). The second godet roller 9 is a roller whose axial direction is substantially parallel to the left-right direction, and is arranged above and behind the first godet roller 8. The second godet roller 9 is rotationally driven by a motor (not shown).

The thread regulation guide 7 is arranged above the first godet roller 8. The thread regulation guide 7 is, for example, a known comb-shaped thread guide for defining a predetermined value for the distance between adjacent threads Y when a plurality of threads Y are hung. ..

(Peg winder 4)
Next, the thread winder 4 will be described with reference to FIGS. 1 and 2. FIG. 2 is a front view of the bobbin winder 4. The thread take-up machine 4 includes a machine base 20, a plurality of fulcrum guides 21, a plurality of traverse guides 22, a turret 23, two bobbin holders 24, a contact roller 25, a control unit 26, and the like.

As shown in FIG. 1, the machine base 20 includes a machine base main body 27 vertically arranged at the rear of the bobbin winder 4, and a frame body 28 fixed to the upper part of the machine base main body 27 and extended forward. , Have. In the present embodiment, both the machine base main body 27 and the frame 28 correspond to the "machine base" of the present invention. A turret 23 or the like is supported on the machine base main body 27. A contact roller 25 extending in the front-rear direction is supported on the frame body 28.

The plurality of fulcrum guides 21 are individually provided for the plurality of threads Y and are arranged in the front-rear direction. The plurality of fulcrum guides 21 are attached to the guide support member 29 supported by the frame body 28, and by hooking the plurality of threads Y respectively, the fulcrum when each of the plurality of threads Y is twilled. It becomes.

The plurality of traverse guides 22 are individually provided for the plurality of threads Y and are arranged in the front-rear direction. The plurality of traverse guides 22 are driven by a traverse motor (not shown) and reciprocate in the front-rear direction. As a result, the thread Y hung on the traverse guide 22 is twilled with the fulcrum guide 21 as a fulcrum.

The turret 23 is a disk-shaped member whose axial direction is substantially parallel to the front-rear direction, and is rotatably supported by the machine base main body 27. The turret 23 is rotationally driven by a turret motor (not shown). The turret 23 cantileverly supports the two bobbin holders 24 and moves the two bobbin holders 24 by rotating around a rotation axis substantially parallel to the front-rear direction. As a result, in the thread winder 4, the bobbin holder 24 at the thread winding position (upper position in FIG. 1) where the thread Y is wound and the standby position where the thread Y is not wound (in FIG. 1). It is possible to replace the bobbin holder 24 at the lower position). Then, while the thread Y is being wound around the bobbin B mounted on the bobbin holder 24 at the thread winding position, the bobbin B can be replaced with respect to the bobbin holder 24 at the standby position. There is. Further, the turret 23 is configured to be rotatable as the amount of the thread Y wound up when the thread is wound on the bobbin B increases (see the solid line arrow in FIG. 2).

The two bobbin holders 24 are for mounting a plurality of bobbins B on each. Each of the two bobbin holders 24 is rotatably supported by the upper end and the lower end of the turret 23 supported by the machine base main body 27, and extends forward from the turret 23. In other words, the two bobbin holders 24 are cantilevered and supported by the machine base main body 27 arranged on the rear side. The axial direction of the two bobbin holders 24 is substantially parallel to the front-rear direction. The tip end side (front side) of the bobbin holder 24 is generally a work side on which work such as mounting the bobbin B on the bobbin holder 24 is performed.

A plurality of bobbins B individually provided for the plurality of threads Y are mounted on each bobbin holder 24 side by side in the front-rear direction. The number of bobbins B mounted on one bobbin holder 24 is, for example, 16. Further, the two bobbin holders 24 are rotationally driven by individual take-up motors (not shown). In this embodiment, the rotation direction of the bobbin holder 24 is counterclockwise in FIG.

The contact roller 25 is a roller whose axial direction is substantially parallel to the front-rear direction, and is arranged immediately above the upper bobbin holder 24. The contact roller 25 abuts on the outer peripheral surface of the plurality of packages P formed by winding the plurality of threads Y on the plurality of bobbins B mounted on the upper bobbin holder 24, whereby the contact roller 25 of the package P being wound A contact pressure is applied to the outer peripheral surface to adjust the shape of the package P.

In the present embodiment, the contact roller 25 is swingably supported by the frame body 28 via the roller support member 30. As shown in FIGS. 1 and 2, the roller support member 30 has, for example, a support portion 31, an arm portion 32, and a swing shaft 33. The support portion 31 rotatably supports the contact roller 25 at both ends in the front-rear direction of the contact roller 25. One end of the arm portion 32 is connected to the support portion 31, and extends toward the frame body 28 in a direction orthogonal to the front-rear direction. The swing shaft 33 is connected to the other end of the arm portion 32, extends in the front-rear direction, and is swingably supported by the frame body 28.

The control unit 26 includes a CPU, a ROM, a RAM, and the like. The control unit 26 controls each unit by the CPU according to the program stored in the ROM. Specifically, the control unit 26 controls a turret motor (not shown), a traverse motor (not shown), a take-up motor (not shown), a first moving mechanism 43 and a second moving mechanism 53, which will be described later. do.

In the thread winder 4 having the above configuration, when the upper bobbin holder 24 is rotationally driven, the thread Y twilled by the traverse guide 22 is wound around the bobbin B to form the package P. At this time, the package P is rotating together with the rotating bobbin holder 24. That is, the rotation direction of the package P is counterclockwise in FIG. 2 as in the rotation direction of the bobbin holder 24 (see the solid line arrow in FIG. 2). While the package P is formed, the contact roller 25 abuts on the outer peripheral surface of the package P to apply a contact pressure, so that the shape of the package P is adjusted. The contact roller 25 rotates in the direction opposite to the rotation direction of the bobbin holder 24, that is, clockwise in FIG. 2 (see the solid arrow in FIG. 2). When the thread Y is wound around the bobbin B in the present embodiment, the thread Y in contact with the right side of the contact roller 25 is sent to the downstream side in the rotation direction of the contact roller 25 along the circumferential direction of the contact roller 25. .. Then, the thread Y goes beyond the contact point C and along the circumferential direction of the bobbin B (or the package P already formed around the bobbin B) mounted on the bobbin holder 24 toward the downstream side in the rotation direction of the bobbin holder 24. Is sent.

Here, when the bobbin holder 24 is rotated to wind the yarn Y, an air flow (accompanying flow) along the outer peripheral surface of the package P is generated. For example, as described above, in the case of the thread winder 4 of Patent Document 1, the accompanying flow F (see the broken line arrow in FIG. 10) generated when the bobbin holder 124 is rotated is the rotation of the package P'and the rotation of the package P'. It peels off from the outer peripheral surface (peeling air f). In particular, as the thread Y is wound around the bobbin B'and the diameter of the package P'is increased, more accompanying flow F is separated from the outer peripheral surface of the package P'as the separation air f. Then, as the separation air f increases, the air resistance applied to the package P'increases, and the power consumption required to rotate the bobbin holder 124 increases.

Therefore, the thread winder 4 of the present embodiment includes a first cover portion 41 and a second cover portion 51 in order to suppress peeling of the accompanying flow F from the outer peripheral surface of the package P. Hereinafter, it will be described with reference to FIGS. 2 to 4. FIG. 3 is an oblique view of the bobbin holder 24 at the spool winding position (upper position in FIG. 1).

(1st cover portion 41)
The first cover portion 41 is a member for suppressing the accompanying flow F (see the broken line arrow in FIG. 3) that peels off from the outer peripheral surfaces of the plurality of packages P. As shown in FIG. 2, the first cover portion 41 is provided over a range of 180 degrees along the circumferential direction in the lower half region of the package P in the vertical direction (vertical direction of the present invention). Further, the first cover portion 41 extends along the front-rear direction and is provided so as to cover all the gaps between the adjacent packages P. The base end portion (left side in FIG. 2) of the first cover portion 41 is supported by a cover support member 42 extending in the front-rear direction via a base end support portion 43a described later.

The accompanying flow F that separates from the outer peripheral surface of the package P increases as the diameter of the package P increases, and becomes the largest when the package P has the maximum diameter. Therefore, in order to effectively reduce the power consumption, when the package P has the maximum diameter, the first cover portion 41 is brought close to the outer peripheral surface of the package P and the contact point C, and is accompanied by the outer peripheral surface of the package P. It is preferable to suppress the separation of the flow F. On the other hand, if the distance between the inner peripheral surface of the first cover portion 41 and the outer peripheral surface of the package P is too small, the risk of contact between the package P and the first cover portion 41 increases. Therefore, in the present embodiment, the first cover portion 41 is provided along the circumferential direction of the package P when the package P has the maximum diameter. The distance between the inner peripheral surface of the first cover portion 41 and the outer peripheral surface of the package P when the package P has the maximum diameter is 10 to 60 mm. The "when the package P has the maximum diameter" means that the winding of the thread Y on the bobbin B mounted on the bobbin holder 24 is completed and the package P is completed.

(2nd cover portion 51)
The second cover portion 51 is a flat plate-shaped member for guiding the accompanying flow F (see the broken line arrow in FIG. 4) toward the contact point C as the package P rotates into the gap between the adjacent packages P. As shown in FIG. 2, the second cover portion 51 is a region upstream of the contact C in the rotation direction of the package P and a region downstream of the first cover portion 41 in the rotation direction, that is, the contact in the present embodiment. It is provided in a region on the lower right side of C and above the tip of the first cover portion 41. The base end portion (right side in FIG. 2) of the second cover portion 51 is supported by a support wall portion 52 extending in the front-rear direction via a base end support portion 53a described later. Further, the tip end portion (left side in FIG. 2) of the second cover portion 51 extends from the support wall portion 52 toward the contact point C. Further, the second cover portion 51 is provided so that the angle θ from the tangent line T passing through the contact point C around the contact point C is within a range of 25 degrees. Further, the second cover portion 51 extends along the front-rear direction and is provided so as to cover all the gaps between the adjacent packages P.

For the same reason as described above, in order to effectively reduce the power consumption, when the package P has the maximum diameter, the second cover portion 51 is brought close to the outer peripheral surface of the package P to be removed from the outer peripheral surface of the package P. It is preferable to suppress the peeling of the accompanying flow F. On the other hand, if the distance between the tip of the second cover portion 51 and the outer peripheral surface of the package P and the distance between the tip of the second cover portion 51 and the contact point C are too small, the package P and the first 2 The risk of contact with the cover portion 51 increases. Therefore, in the present embodiment, the second cover portion 51 is provided on the upstream side in the rotation direction of the package P and on the downstream side in the rotation direction of the first cover portion 41 with respect to the contact C when the package P has the maximum diameter. There is. The distance between the tip of the second cover portion 51 and the outer peripheral surfaces of the plurality of packages P when the package P has the maximum diameter is 3 to 10 mm, and the tip of the second cover portion 51 and the package P are The distance from the contact point C at the maximum diameter is 60 to 140 mm.

The first cover portion 41 and the second cover portion 51 may be made of any material, but from the viewpoint of weight reduction, aluminum is preferable, and resin is more preferable. Other metallic properties may be used.

(Movement mechanism)
As described above, in the thread winder 4, the turret 23 rotates about a rotation axis substantially parallel to the front-rear direction to replace the bobbin holder 24 in the thread winding position with the bobbin holder 24 in the standby position. Is possible. At this time, if the first cover portion 41 and the second cover portion 51 are present on the movement locus M in which the bobbin holder 24 moves between the thread winding position and the standby position, it interferes with the replacement of the bobbin holder 24. .. Therefore, in the present embodiment, there is a first moving mechanism 43 for retracting the first cover portion 41 from the moving locus M, and a second moving mechanism 53 for retracting the second cover portion 51 from the moving locus M. In the present embodiment, the first moving mechanism 43 and the second moving mechanism 53 correspond to the "moving mechanism" of the present invention.

The first moving mechanism 43 has, for example, a base end support portion 43a and a cover motor 43b. The base end support portion 43a is fixed to the cover support member 42 and supports the base end portion of the first cover portion 41. The base end support portion 43a is rotationally driven by the cover motor 43b with the rotation axis in the front-rear direction.

In the present embodiment, when the first moving mechanism 43 retracts the first cover portion 41 from the movement locus M between the thread winding position and the standby position of the bobbin holder 24, the base end support portion is provided by the cover motor 43b. The 43a is driven to rotate. Then, the first cover portion 41 supported by the proximal end support portion 43a rotates about the proximal end support portion 43a in the same direction as the rotational direction of the proximal end support portion 43a (see the broken line arrow in FIG. 2). As a result, as shown in FIG. 5, the first cover portion 41 moves to the left side. As described above, the first moving mechanism 43 retracts the first cover portion 41 from the movement locus M between the bobbin holder 24 thread winding position and the standby position.

The second moving mechanism 53 has, for example, a base end support portion 53a, a central support portion 53b, an arm portion 53c, an intervening portion 53d, and a cylinder 53e. The base end support portion 53a is fixed to the support wall portion 52 and rotatably supports the base end portion of the second cover portion 51. The central support portion 53b rotatably supports the second cover portion 51 at a substantially central portion of the second cover portion 51. The arm portion 53c is a rod-shaped member in which one end on the left side in FIG. 2 is connected to the central support portion 53b and the other end on the right side is connected to the intervening portion 53d. The intervening portion 53d rotatably supports the other end of the arm portion 53c and is arranged at the tip of the cylinder 53e. The cylinder 53e is an air cylinder provided near the center of the support wall portion 52 in the front-rear direction and moves in the vertical direction by supplying and discharging compressed air, for example.

In the present embodiment, when the second moving mechanism 53 retracts the second cover portion 51 from the movement locus M between the thread winding position and the standby position of the bobbin holder 24, the cylinder 53e first moves upward. do. Then, the other end of the arm portion 53c rotatably supported via the intervening portion 53d moves upward, and one end of the arm portion 53c moves to the right and upward. Along with the movement of one end of the arm portion 53c, the central support portion 53b moves to the right and upward. Then, the second cover portion 51 rotates about the proximal end portion rotatably supported by the proximal end support portion 53a so that the tip portion moves to the right and upward (see the broken line arrow in FIG. 2). .. As a result, as shown in FIG. 5, the angle of the second cover portion 51 from the base end portion to the tip end portion in the extending direction with respect to the vertical direction becomes smaller, that is, the second cover portion 51 stands up. Become. As described above, the second moving mechanism 53 retracts the second cover portion 51 from the movement locus M between the bobbin holder 24 thread winding position and the standby position.

(effect)
The thread winder 4 of the present embodiment has a bobbin holder 24 in which a plurality of bobbins B are mounted side by side in the axial direction, and an outer circumference of a plurality of packages P formed by winding a plurality of threads Y on the plurality of bobbins B. The contact roller 25 that comes into contact with the surface is provided in at least a part of the region on the upstream side of the rotation direction of the package P from the contact point C between the plurality of packages P and the contact roller 25, and is provided along the circumferential direction of the plurality of packages P. It is provided with a first cover portion 41 provided. Here, the "region on the upstream side in the rotation direction of the package P from the contact C" is a range of 180 degrees clockwise from the contact C along the circumferential direction of the package P in FIG. According to the present embodiment, the accompanying flow F is guided to the inner peripheral surface of the first cover portion 41 and flows toward the contact C along the outer peripheral surface of the plurality of packages P. Therefore, it is possible to prevent air from separating from the outer peripheral surfaces of the plurality of rotating packages P. As a result, the air resistance applied to the package P when the yarn Y is wound can be suppressed, and the power consumption can be reduced.

In the thread winder 4 of the present embodiment, the first cover portion 41 is provided in the lower half region in the vertical direction of the entire circumference of the plurality of packages P. Most of the accompanying flow F toward the vicinity of the contact point C is separated in the lower half region of the entire circumference of the plurality of packages P. According to the present embodiment, since the first cover portion 41 covers the lower half region of the entire circumference of the plurality of packages P, the peeling of the accompanying flow F can be more reliably suppressed. .. Further, the first cover portion 41 may be bent downward under the force of gravity due to the transmission of vibration during rotation of the package P. When the first cover portion 41 is provided in the upper half region of the entire circumference of the package P, the first cover portion 41 bent downward may come into contact with the package P. According to the present embodiment, since the first cover portion 41 is provided in the lower half region of the entire circumference of the package P, the first cover portion 41 bent downward comes into contact with the package P. There is no. As a result, the quality of the package P can be ensured more reliably.

In the thread winder 4 of the present embodiment, the first cover portion 41 is provided within a range of 225 degrees along the circumferential direction from the contact point C. When the first cover portion 41 is arranged over a wide area around the entire circumference of the package P, the weight of the entire thread winder 4 increases, and the thread winder 4 tends to swing when the thread Y is wound. Then, the quality of the package P may be deteriorated. According to the present embodiment, the first cover portion 41 is provided within a range of 225 degrees along the circumferential direction from the contact C in the region upstream of the contact C in the rotation direction, so that the vicinity of the contact C is provided. It is possible to suppress an increase in the weight of the thread winder 4 while suppressing the separation of the accompanying flow F toward the direction. Therefore, the quality of the package P can be ensured while reducing the power consumption.

In the thread winder 4 of the present embodiment, air provided in a region upstream of the contact C in the rotation direction and in a region downstream of the first cover portion 41 in the rotation direction toward the contact C as the package P rotates. A second cover portion 51 is further provided to guide the vehicle to a gap between adjacent packages P. According to the present embodiment, the second cover portion 51 prevents the accompanying flow F toward the vicinity of the contact C from peeling off from the outer peripheral surface of the package P due to a collision with the contact roller 25, and between adjacent packages P. It is guided to the gap of. As a result, it is possible to further suppress the separation of air from the outer peripheral surfaces of the plurality of rotating packages P, and it is possible to further reduce the power consumption.

In the thread winder 4 of the present embodiment, the second cover portion 51 has a flat plate shape and is provided within a range of 25 degrees or less from the tangent line T passing through the contact point C with the contact point C as the center. When the flat plate-shaped second cover portion 51 is provided in a range larger than 25 degrees from the tangent line T centering on the contact C, many accompanying flows F deviate to the contact roller 25 side, or the accompanying flow It is possible that F is not properly guided by the second cover 51 into the gap between adjacent packages P. According to the present embodiment, the accompanying flow F toward the contact point C can be reliably guided by the gap between the adjacent packages P, and the power consumption can be further reduced.

In the thread winder 4 of the present embodiment, the first cover portion 41 is provided over a range of 90 degrees or more along the circumferential direction of the package P. According to the present embodiment, since the first cover portion 41 can protect a wider range of the outer peripheral surfaces of the plurality of packages P, the accompanying flow F is separated from the outer peripheral surfaces of the plurality of rotating packages P. It can be further suppressed and the power consumption can be further reduced.

In the thread winder 4 of the present embodiment, the first cover portion 41 and the second cover portion 51 extend along the axial direction and cover all the gaps between the adjacent packages P. According to the present embodiment, the first cover portion 41 and the second cover portion 51 are provided without gaps along the axial direction, respectively. Therefore, it is possible to prevent the accompanying flow F from peeling from the outer peripheral surface of the package P toward the outside in the radial direction of the package P through the gap along the axial direction. As a result, it is possible to further suppress the accompanying flow F from peeling off from the outer peripheral surfaces of the plurality of packages P, and it is possible to further reduce the power consumption.

In the thread winder 4 of the present embodiment, both ends of the first cover portion 41 and the second cover portion 51 along the axial direction are outside of both ends along the axial direction of the package P. According to this embodiment, it is possible to prevent the accompanying flow F from peeling off from the outer peripheral surfaces of the packages P at both ends of the rotating package toward the outside in the axial direction. As a result, the power consumption can be further reduced.

In the thread winder 4 of the present embodiment, the bobbin holder 24 can be moved between the thread winding position where the thread Y is wound and the standby position where the thread Y is not wound, and the first cover The portion 41 and the second cover portion 51 have a first moving mechanism 43 and a second moving mechanism 53, respectively, which retract the bobbin holder 24 from the movement locus M when the bobbin holder 24 moves between the thread winding position and the standby position. In the thread winder 4 provided with the two bobbin holders 24, each time the winding operation of the thread on a plurality of bobbins mounted on the bobbin holder is completed, the bobbin holder 24 in the thread winding position and the bobbin holder 24 in the standby position are held. Work to replace is done. At this time, by retracting the first cover portion 41 and the second cover portion 51 from the movement locus M, the bobbin holder 24 can be replaced smoothly.

In the thread winder 4 of the present embodiment, the first cover portion 41 and the second cover portion 51 are formed independently of each other. When the first cover portion 41 and the second cover portion 51 are retracted from the movement locus M, the first cover portion 41 and the second cover portion 51 are formed independently as in the present embodiment. Compared with the case where the first cover portion 41 and the second cover portion 51 are integrally formed, the first cover portion 41 and the second cover portion 51 can be moved in a space-saving manner. As a result, it is possible to suppress the increase in size of the entire thread winder 4.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these examples, and various modifications can be made as long as they are described in the claims. Hereinafter, a modified example in which the embodiment is modified will be described. However, those having the same configuration as that of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted as appropriate.

(First modification)
In the above embodiment, the first cover portion 41 is provided along the circumferential direction of the package P when the package P has the maximum diameter. However, the size of the diameter of the first cover portion 41 may be variable along the outer peripheral surface of the package P whose diameter increases with the winding of the thread Y. For example, as shown in FIGS. 6 and 7, the thread winder 74 of the first modification includes a first diameter-expanding mechanism 82 and a second diameter-expanding mechanism 83 that change the size of the diameter of the first cover portion 81. Be prepared. The first cover portion 81 is made of a flexible material, and examples thereof include a tent cloth and a rubber sheet. The first diameter expanding mechanism 82 has a base end support portion 82a, a first arm portion 82b, a first arm support portion 82c, and a first guide 82d. The base end support portion 82a has a take-up shaft 86 extending in the front-rear direction, and the take-up shaft 86 has a predetermined length from the base end portion (left side in FIG. 6) of the first cover portion 81. By being wound around, a part of the first cover portion 81 is housed inside the proximal end support portion 82a. The take-up shaft 86 is rotationally driven by a motor (not shown) to feed or take up the first cover portion 81 wound around the take-up shaft 86. As a result, the first cover portion 81 can be expanded and contracted along the circumferential direction of the package P. The first arm portion 82b is a rod-shaped member in which one end on the upper side in FIG. 6 is connected to the base end support portion 82a and the other end on the lower side is connected to the first arm support portion 82c. The first arm support portion 82c supports the other end of the first arm portion 82b and is fixed to the upper surface of the first guide 82d arranged below. The first guide 82d can move in the left-right direction integrally with the base end support portion 82a, the first arm portion 82b, and the first arm support portion 82c along the rail 84 arranged below the first guide 82d. It is a member. The first guide 82d includes, for example, a linear guide (not shown), a ball screw, and a motor, respectively.

Further, the second diameter expanding mechanism 83 has a tip support portion 83a, a second arm portion 83b, a second arm support portion 83c, and a second guide 83d. The tip support portion 83a supports the tip portion (right side in FIG. 6) of the first cover portion 81. The second arm portion 83b is a rod-shaped member in which one end on the upper side in FIG. 6 is connected to the tip support portion 83a and the other end on the lower side is connected to the second arm support portion 83c. Further, the second arm portion 83b has a linear guide, a motor, and the like, and has a configuration in which the second arm portion 83b can be expanded and contracted in the extension direction (see the broken line arrow in FIG. 7). The second arm support portion 83c rotatably supports the other end of the second arm portion 83b, and is fixed to the upper surface of the second guide 83d arranged below. The second arm support portion 83c has a motor (not shown) such as a servo motor or a stepping motor. The second arm support portion 83c is driven by a motor (not shown) to rotate the second arm portion 83b around the second arm support portion 83c by an arbitrary angle. The second guide 83d is a member that can move in the left-right direction integrally with the tip support portion 83a, the second arm portion 83b, and the second arm support portion 83c along the rail 85 arranged below the second guide 83d. Is. The second guide 83d includes, for example, a linear guide (not shown), a ball screw, and a motor, respectively. The first guide 82d and the second guide 83d may be composed of a linear guide and a cylinder.

The control unit 26 includes a motor that rotationally drives the take-up shaft 86 (not shown), a motor that drives the movement of the first guide 82d (not shown), and a motor that drives the expansion and contraction operation of the second arm unit 83b (not shown). , The motor of the second arm support portion 83c (not shown) and the motor that drives the movement of the second guide 83d (not shown) are controlled. As shown in FIG. 7, the control unit 26 expands the diameter of the package P and rotates the turret (see the solid line arrows in FIGS. 6 and 7) as the thread Y is wound, so that the outer peripheral surface of the package P is formed. The first diameter expansion mechanism 82 and the second diameter expansion mechanism 83 are moved so as to correspond to the fluctuation of the position of, and the diameter of the first cover portion 81 is expanded. Specifically, the control unit 26 moves the first guide 82d to the left (see the broken line arrow in FIG. 7) and moves the second guide 83d to the right so as to correspond to the fluctuation of the position of the outer peripheral surface of the package P. Move in the direction (see the dashed arrow in FIG. 7). Further, the control unit 26 rotates the second arm portion 83b at an arbitrary angle around the second arm support portion 83c so as to correspond to the fluctuation of the position of the outer peripheral surface of the package P (see the broken line arrow in FIG. 7). , The second arm portion 83b is shortened (see the broken line arrow in FIG. 7). At this time, the control unit 26 rotationally drives the take-up shaft 86 of the base end support portion 82a to move the first cover portion 81 wound around the take-up shaft 86 to the right side by a predetermined length. And send it out. Here, since the first cover portion 81 is made of a flexible material as described above, the first cover portion 81 sent out from the base end support portion 82a to the right side depends on its own weight. It bends downward. Since the control unit 26 has the peripheral length and curvature of the first cover unit 81 that can follow the circumferential direction of the package P whose diameter is to be expanded, the control unit 26 is based on the first cover unit 81 in consideration of downward bending. The length of the first cover portion 81 to be fed from the end support portion 82a to the right side is determined. As described above, even if the diameter of the package P is increased, the first cover portion 81 is always arranged along the outer peripheral surface of the package P. As a result, it is possible to prevent the accompanying flow F from peeling off from the outer peripheral surfaces of the plurality of packages P from the initial stage of winding the yarn Y, and the power consumption can be further reduced.

(Second modification)
In the above embodiment, the first cover portion 41 and the second cover portion 51 are formed independently of each other. However, the first cover portion and the second cover portion may be integrally formed. For example, as shown in FIG. 8, in the thread winder 134 of the second modification, the end portion on the upstream side in the rotation direction of the first cover portion 141 (the right side in FIG. 8) and the base of the second cover portion 151. It is in contact with the end. According to this configuration, it is possible to prevent the accompanying flow F from peeling off from the outer peripheral surfaces of the plurality of packages P through the gap between the first cover portion 141 and the second cover portion 151. Further, in the above embodiment, the second cover portion 51 has a flat plate shape. However, as shown in FIG. 8, the second cover portion 151 may be provided along the circumferential direction of the package P. According to this configuration, it is possible to create a path for guiding the accompanying flow F along the outer peripheral surface of the package P to the gap between the adjacent packages P. As a result, more of the accompanying flow F toward the contact point C can be sent into the gap between the adjacent packages P. As a result, the power consumption can be further reduced.

(Other variants)
In the above embodiment, both the first cover portion 41 and the second cover portion 51 are arranged. However, only the first cover portion 41 may be arranged. Further, the shape of the end portion of the first cover portion 41 near the contact point C may be flat, and the shape of the other portion may be formed along the circumferential direction of the package P. This also applies to the first cover portion 141 integrally formed with the second cover portion 151 in the above second modification.

In the above embodiment, the first cover portion 41 is provided within a range of 225 degrees along the circumferential direction from the contact point C. However, it may be provided within a range of an angle wider than 225 degrees along the circumferential direction from the contact point C. For example, the first cover portion 41 may be provided in both the region on the upstream side and the region on the downstream side in the rotation direction of the package P from the contact C. Further, a plurality of first cover portions 41 may be provided side by side along the circumferential direction of the plurality of packages P.

In the above embodiment, the second cover portion 51 is provided on the upstream side in the rotation direction of the package P and on the downstream side in the rotation direction of the first cover portion 41 with respect to the contact C when the package P has the maximum diameter. However, the second cover portion 51 is provided on the upstream side in the rotation direction of the package P and on the downstream side in the rotation direction of the first cover portion 41 with respect to the contact C which is variable and whose position changes due to the expansion of the diameter of the package P. You may be. In this case, the second cover portion 51 is arranged by the second moving mechanism 53 on the upstream side in the rotation direction of the package P and on the downstream side in the rotation direction of the first cover portion 41 with respect to the fluctuating contact C. As a result, the accompanying flow F is separated from the outer peripheral surfaces of the plurality of packages P from the initial stage of the start of winding of the yarn Y, as in the case where the diameter of the first cover portion 41 can be changed. It can be suppressed and the power consumption can be further reduced.

The first moving mechanism 43 and the second moving mechanism 53 are limited to the configurations described in the above embodiment as long as the first cover portion 41 and the second cover portion 51 can be retracted from the movement locus M. Not done.

Further, the surface of the second cover portion 51 on the side facing the outer peripheral surface of the package P may be provided with a recess for guiding the accompanying flow F toward the contact C into the gap between the adjacent packages P. .. In this case, the accompanying flow F flows along the recess into the gap between the adjacent packages P. As a result, the number of accompanying flows F toward the contact point C is larger, and the accompanying flow F is guided to the gap between the adjacent packages P, so that the power consumption can be further reduced.

In the above embodiment, the first cover portion 41 and the second cover portion 51 extend in the front-rear direction. However, the first cover portion 41 and the second cover portion 51 do not have to extend along the front-rear direction. In this case, for example, the first cover portion 41 and the second cover portion 51 may be provided in a range that covers the gap between the adjacent packages P in the front-rear direction. That is, in this case, the first cover portion 41 and the second cover portion 51 are provided intermittently along the front-rear direction.

(Example)
Next, with respect to the thread winder 4 of Example 1, Example 2, Comparative Example 1, Comparative Example 2 and Comparative Example 3, the transition of the power loss (W) due to the expansion of the diameter of the package P and the cover portion. The simulation results of the loss reduction amount (W) for the thread winder 4 (Comparative Example 1) in which the above is not arranged are shown in Table 1 below. Simulation analysis was performed using Siemens' Simcenter STAR-CCM +.

The thread winder 4 of the first embodiment is provided over a range of 180 degrees along the circumferential direction in the lower half region of the package P in the vertical direction when the diameter of the package P is the maximum (diameter 435 mm). Only one cover portion 41 (see FIG. 2) is arranged. The thread winder 4 of the second embodiment has the same first cover portion 41 as that of the first embodiment, and when the diameter of the package P is the maximum (diameter 435 mm), the region on the upstream side of the package P in the rotation direction with respect to the contact C. Further, a second cover portion 51 provided in a region downstream of the first cover portion 41 in the rotation direction is arranged (see FIG. 2). The second cover portion 51 is a flat plate-shaped member provided along the tangent line T passing through the contact point C. In the second embodiment, the first cover portion 41 and the second cover portion 51 are formed independently of each other. In the thread winder 4 of Comparative Example 1, neither the first cover portion 41 nor the second cover portion 51 is arranged. The thread winder 4 of Comparative Example 2 is arranged only with the second cover portion 51 which is the same as that of Example 2. The thread winder 4 of Comparative Example 3 is an application of the configuration of the shielding panel described in Patent Document 2 to the above embodiment, and as shown in FIG. 9, the diameter of the package P is the maximum (diameter 435 mm). Occasionally, a shielding panel 201 provided in a region downstream of the contact C in the rotation direction of the package P and within a range of 135 degrees from the contact C along the circumferential direction (rotation direction) of the package P is arranged. ing. More specifically, the shielding panel 201 is located at a position of 10 degrees from the contact C along the circumferential direction (rotation direction) of the package P to 135 degrees along the circumferential direction (rotation direction) of the package P from the contact C. It is provided over the range up to the position. Further, on the inner peripheral surface of the shielding panel 201, a plurality of air guide panels (not shown) extending along the circumferential direction of the package P are formed so as to be arranged along the front-rear direction. Each air guide panel is formed at a corresponding position in a gap between adjacent packages P.

In Example 1, Example 2, Comparative Example 1, Comparative Example 2 and Comparative Example 3, the diameter of the package P is 360, 380, 400, 420, 435 mm when the rotation speed of the bobbin holder 24 is 3300 m / min. The simulated values of the loss power consumption (W) of the thread winder 4 and the loss reduction amount (W) with respect to Comparative Example 1 are measured.

According to Table 1, in the thread winder 4 of Comparative Example 1 in which neither the first cover portion 41 nor the second cover portion 51 is arranged, the power loss consumption increased as the diameter of the package P increased. .. In Comparative Example 2 in which only the second cover portion 51 was arranged, the transition of the power loss due to the expansion of the diameter of the package P was almost the same as that in Comparative Example 1. In Comparative Example 3 in which the shielding panel 201 was arranged, the power loss due to the expansion of the diameter of the package P was larger than that in Comparative Example 1. In Example 1 and Example 2, the amount of power loss was reduced as compared with Comparative Example 1, and in particular, the amount of loss reduction was increased as the diameter of the package P was increased. In Example 2 in which both the first cover portion 41 and the second cover portion 51 were arranged, the amount of loss reduction was further larger than that in Example 1 when the diameter of the package P was 400 mm or more. Further, in Example 2, when the diameter of the package P was increased to 400 to 435 mm, the amount of power loss was hardly increased. From the above, it was found that the power consumption can be suppressed by providing the first cover portion 41 in the thread winder 4, and the power consumption can be further suppressed by providing both the first cover portion 41 and the second cover portion 51. rice field.

1 Pick-up device 4 Thread take-up machine 20 Machine stand 24 Bobbin holder 25 Contact roller 41 1st cover 43 1st moving mechanism (moving mechanism)
51 Second cover 53 Second moving mechanism (moving mechanism)
74 Thread winder 81 1st cover 82 1st diameter expansion mechanism 83 2nd diameter expansion mechanism 134 Thread winder 141 1st cover 151 2nd cover B, B'bobbin P, P'Package Y Thread C Contact T Tangent F Accompanying flow (air)
M movement locus

An object of the present invention is to reduce power consumption by suppressing an increase in air resistance due to an increase in the diameter of a package as the yarn is wound in a yarn winder provided with a bobbin holder equipped with a plurality of bobbins. And.

The thread winder of the first invention includes a machine base and a plurality of bobbins that are rotatably supported by the machine base and extend in the axial direction along the horizontal direction to wind a plurality of threads. A bobbin holder mounted side by side in the axial direction, a contact roller extending along the axial direction, and a contact roller abutting on an outer peripheral surface of a plurality of packages formed by winding the plurality of threads on the plurality of bobbins. A first cover portion provided in at least a part of a region on the upstream side in the rotation direction of the package with respect to the contact point between the plurality of packages and the contact roller and provided along the circumferential direction of the plurality of packages. It is characterized by being prepared.

In the yarn winding machine provided with a bobbin holder in which a plurality of bobbins are mounted, with the winding of the yarn, it is possible diameter of the package is prevented from increasing air resistance due to large Do Rukoto, to reduce power consumption.

It is a side view of the take-back device which has the thread winder which concerns on this embodiment. It is a front view of a thread winder. It is a partial front view of the thread winder explaining the accompanying flow which flows along the outer peripheral surface of a package by the 1st cover part. It is a partial perspective view of the thread winder explaining the accompanying flow which is guided to the gap between adjacent packages by the 2nd cover part. It is a front view of the thread winder in a state where the 1st cover part and the 2nd cover part are retracted from the movement locus of a bobbin holder. It is a front view of the thread winder which concerns on 1st modification. In the first modification, it is the front view of the thread winder when the diameter of a package is expanded. It is a front view of the thread winder which concerns on the 2nd modification. It is a front view of the thread winder which concerns on Comparative Example 3. It is a front view of the conventional thread winder, and is the figure for demonstrating the accompanying flow peeling off from the outer peripheral surface of a package.

Here, when the bobbin holder 24 is rotated to wind the yarn Y, an air flow (accompanying flow) along the outer peripheral surface of the package P is generated. For example, as described above, in the case of the thread winder 104 of Patent Document 1, the accompanying flow F (see the broken line arrow in FIG. 10) generated when the bobbin holder 124 is rotated is the rotation of the package P'and the rotation of the package P'. It peels off from the outer peripheral surface (peeling air f). In particular, as the thread Y is wound around the bobbin B'and the diameter of the package P'is increased, more accompanying flow F is separated from the outer peripheral surface of the package P'as separation air f. Then, as the separation air f increases, the air resistance applied to the package P'increases, and the power consumption required to rotate the bobbin holder 124 increases.

Therefore, the thread winder 4 of the present embodiment includes a first cover portion 41 and a second cover portion 51 in order to suppress peeling of the accompanying flow F from the outer peripheral surface of the package P. Hereinafter, it will be described with reference to FIGS. 2 to 4. FIG. 4 is an oblique view of the bobbin holder 24 at the spool winding position (upper position in FIG. 1).

(Movement mechanism)
As described above, in the thread winder 4, the turret 23 rotates about a rotation axis substantially parallel to the front-rear direction to replace the bobbin holder 24 in the thread winding position with the bobbin holder 24 in the standby position. Is possible. At this time, if the first cover portion 41 and the second cover portion 51 are present on the movement locus M in which the bobbin holder 24 moves between the thread winding position and the standby position, it interferes with the replacement of the bobbin holder 24. .. Therefore, in the present embodiment, the thread winder 4 has a first moving mechanism 43 that retracts the first cover portion 41 from the moving locus M, and a second moving mechanism that retracts the second cover portion 51 from the moving locus M. 53 and. In the present embodiment, the first moving mechanism 43 and the second moving mechanism 53 correspond to the "moving mechanism" of the present invention.

In the thread winder 4 of the present embodiment, the first cover portion 41 and the second cover portion 51 extend along the axial direction of the bobbin holder 24 and cover all the gaps between the adjacent packages P. According to the present embodiment, the first cover portion 41 and the second cover portion 51 are provided without gaps along the axial direction of the bobbin holder 24, respectively. Therefore, it is possible to prevent the accompanying flow F from peeling from the outer peripheral surface of the package P toward the outside in the radial direction of the package P through the gap along the axial direction of the bobbin holder 24. As a result, it is possible to further suppress the accompanying flow F from peeling off from the outer peripheral surfaces of the plurality of packages P, and it is possible to further reduce the power consumption.

In the thread winder 4 of the present embodiment, both ends of the first cover portion 41 and the second cover portion 51 along the axial direction of the bobbin holder 24 are outside of both ends of the package P along the axial direction. Is. According to this embodiment, it is possible to prevent the accompanying flow F from peeling off from the outer peripheral surfaces of the packages P at both ends of the rotating package P toward the outside in the axial direction of the bobbin holder 24. As a result, the power consumption can be further reduced.

Claims (14)

With the machine stand
A bobbin holder that is rotatably supported by the machine base and extends in the axial direction along the horizontal direction, and a plurality of bobbins in which a plurality of threads are wound up are mounted side by side in the axial direction.
A contact roller that extends along the axial direction and abuts on the outer peripheral surfaces of a plurality of packages formed by winding the plurality of threads around the plurality of bobbins.
A first cover portion provided in at least a part of a region on the upstream side in the rotation direction of the package with respect to the contact point between the plurality of packages and the contact roller and provided along the circumferential direction of the plurality of packages. A thread winder characterized by being equipped. The thread winder according to claim 1, wherein at least a part of the first cover portion is provided in a region of the lower half in the vertical direction of the entire circumference of the plurality of packages. The thread winder according to claim 2, wherein the first cover portion is provided within a range of 225 degrees along the circumferential direction from the contact point. The thread winder according to claim 2 or 3, wherein the first cover portion is provided in a region of the lower half in the vertical direction of the entire circumference of the plurality of packages. A gap between the packages provided in the region upstream of the contact in the rotation direction and in the region downstream of the first cover in the rotation direction and allowing air toward the contact as the package rotates. The thread winder according to any one of claims 1 to 4, further comprising a second cover portion for guiding to. The thread winder according to claim 5, wherein the second cover portion has a flat plate shape and is provided within a range of 25 degrees or less from a tangent line passing through the contact with the contact as the center. The thread winder according to claim 5, wherein the second cover portion is provided along the circumferential direction of the package. The thread winder according to any one of claims 1 to 7, wherein the first cover portion is provided over a range of 90 degrees or more along the circumferential direction. Any one of claims 1 to 8, wherein the diameter of the first cover portion can be varied along the outer peripheral surface of the package, which increases in diameter as the yarn is wound. The thread winder described in. The first cover portion and the second cover portion extend along the axial direction and cover all the gaps between adjacent packages, according to any one of claims 5 to 9. Thread winder. The thread winder according to claim 10, wherein both ends of the first cover portion and the second cover portion in the axial direction are outside of both ends in the axial direction of the package. The bobbin holder can be moved between a thread winding position where the thread is wound and a standby position where the thread is not wound.
5. The fifth aspect of the present invention is characterized in that the first cover portion and the second cover portion have a moving mechanism for retracting the first cover portion and the second cover portion from the movement locus when the bobbin holder moves between the thread winding position and the standby position. The thread winder according to any one of 1 to 11. The thread winder according to claim 12, wherein the first cover portion and the second cover portion are formed independently of each other. The thread winder according to any one of claims 5 to 12, wherein the first cover portion and the second cover portion are integrally formed.

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