JP2000327222A - Blade traverse device and thread take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a thread package to be formed constant by making a position in the longitudinal direction of each of traverse devices different from each other, making length of free length of a filament constant or setting it in desired length. SOLUTION: Positions of traverse devices U1-U3 are made free to adjust in the longitudinal direction, the traverse device U2 positioned below is arranged on the front side and the traverse devices U1, U3 positioned above are arranged on the rear side at the time of continuously providing a plural number of the blade traverse devices. It is possible to make free length of the traverse device U2 below equal to free length of the traverse device U1 on the upper side as a contact point of a filament and a contact roller 3 moves downward when the traverse device U2 below is arranged in front of the traverse device 1 above and an engaging point with the filament is set to be on the front side rather than an engaging point of the traverse device U1 above. As it is possible to set length of free length equal to each other by adjusting arrangement of each of the traverse devices properly in the longitudinal direction, it is possible to maintain quality of a thread package constant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a blade traverse device and a yarn winding device used for winding a yarn around a bobbin to form a package.
An object of the present invention is to set a free length to a required length to optimize a winding state of a yarn package.

[0002]

2. Description of the Related Art FIGS. 10 and 11 show a schematic structure of a conventional yarn winding device 21. FIG. This yarn winding device 21
Is configured so that a plurality of yarn packages P can be simultaneously formed by winding a yarn around a plurality of bobbins B,
Bobbin holder 2 for rotatably supporting a plurality of bobbins B
3. A contact roller T which comes into contact with the yarn package P formed on the bobbin, and traverse devices U1, U2,..., U for traversing the yarn wound around the yarn package P
8 is provided. A slit 15 is formed on the surface of the bobbin B for holding the yarn at the start of winding, and a plurality of slits 15 are mounted on the bobbin holder 23 so that the ends of the adjacent bobbins B come into contact with or approach each other. Bobbin holder 23
Is mounted on a rotatable turret board 22 at one end in a cantilever manner. In the example shown in the figure, two bobbin holders 23 are provided symmetrically with respect to the rotation axis of the turret board 22. Each bobbin holder 23 is driven to rotate by a motor 24 or the like. Both ends of the contact roller T are rotatably supported by bearings 25, and are provided on an elevating frame F which can be moved up and down together with traverse devices U1 to U8 for traversing the yarn left and right. As the winding process of the yarn progresses, the winding diameter of the yarn package P increases.
And the traverse devices U1 to U8 are raised.

The illustrated traverse devices U1 to U8 are blade traverse devices, and are provided for each bobbin B. Each traverse device 11 has a guide surface at a front edge thereof, and is disposed parallel to the lower surface thereof. And a gear unit 14 for rotating the rotating blades 12 and 13 in opposite directions at the same speed. Each of the rotating blades 12 and 13 has a tip protruding from the guide surface of the traverse guide 11 during rotation, and upper and lower rotating blades 1 at left and right ends of the guide surface.
By transferring the yarn between the yarns 2 and 13, the yarn can be traversed right and left along the guide surface. The illustrated yarn winding device 21 is arranged so that the adjacent rotating blades 12 and 13 partially overlap each other to achieve compactness.

[0004] The rotation driving means for each of the rotary blades 12 and 13 includes:
For example, as shown in FIG.
a, the pulley 27 attached to each of the traverse devices U1-
By stretching the endless belt 28 between the pulley 17 attached to the input shaft of the gear unit 14 provided for each U8, all the traverse devices U1 can be driven by one motor 26.
To U8 can be simultaneously driven to rotate. Reference numeral 29 denotes an idler for adjusting the tension of the endless belt 28, and reference numeral 30 denotes a guide pulley for changing the moving direction of the endless belt 28.

[0005]

The yarn winding device 21 configured as described above is driven to rotate while traversing the yarn guided for each bobbin B right and left by each of the traverse devices U1 to U8. The yarn package P is wound around the bobbin B. As shown in FIG. 12, the yarn Y is traversed right and left from a traversing fulcrum guide 31 provided above, via a traverse guide (not shown), to engage with upper and lower rotating blades 12 and 13. Meanwhile, the yarn is wound on a yarn package P which rotates while being in contact with the contact roller T. At this time, the yarn Y comes into contact with the guide surface of the traverse guide 11 and the upper or lower rotating blades 12, 13, and then contacts the surface of the contact roller T in the circumferential direction by about a quarter.

The length from the point of engagement k between the yarn Y and the upper or lower rotating blades 12 and 13 to the point of contact Ta between the yarn Y and the contact roller T is referred to as a free length Lf. Is done. In the yarn winding device 21, traverse devices are alternately arranged vertically so that the adjacent rotating blades 12, 13 partially overlap. Therefore, the distance between the traverse guide 11 and the rotating blades 12 and 13 from the contact roller T is different between the upper traverse device and the lower traverse device. Causes the following problems. In FIG. 12, the lower rotating blade 13 moves the yarn Y to the left in the drawing, and the upper rotating blade 1
2 traverses the yarn Y to the right. Since the lateral movement of the yarn Y follows the rotation of the rotary blades 12 and 13 with a slight delay, the engagement point k between the yarn Y and the rotary blades 12 and 13 during the traversing is determined by the yarn k. In principle, it moves ahead of the contact point Ta between Y and the contact roller T. Therefore, the engagement points k ₁ and k ₂ between the yarn Y and the upper and lower rotating blades 12 and 13 at the time of delivery are located outside the contact point Ta between the contact roller T and the yarn Y.

Here, as shown by the broken line in the drawing, considering the case where the distance between the rotary blades 12 and 13 from the contact roller T is increased to increase the free length Lf, the yarn Y and the rotary blade 12 at the time of transfer are considered. , the position of the engagement point k _1, k ₂ and 13 will be naturally separated from the contact roller T upward. At this time, the positions of the engagement points k ₁ and k _{2 in} the left-right direction do not change. At the engagement points k ₁ and k ₂ , the yarn Y takes a posture inclined with respect to the axis t1 of the contact roller T, but this gradient is considered to be substantially constant irrespective of the distance of the rotary blades 12 and 13 from the contact roller T. . Therefore, when the free length Lf is lengthened, the position of the contact point Ta between the yarn Y and the contact roller T when the yarn Y is transferred is adjusted to the free length Lf.
Will move inward by, for example, h more than when is short. As a result, the winding width W of the yarn package P formed by traversing with the traverse device disposed at a position far from the contact roller T is reduced by, for example, 2 h. However, since the winding amount of the yarn Y is constant, a phenomenon that the winding diameter D of the yarn package increases is brought about. This means that the traverse devices U1 to U1 are alternately moved up and down as shown in FIG.
In the case where 8 is provided, it means that the problem that the winding diameter of the completed yarn package P differs depending on the bobbin B may occur.

In the yarn winding device 21 shown in FIG. 10, the bobbin holder 23 is supported in a cantilever state.
The tip side tends to bend downward and separate from the contact roller T. For this reason, since the free length and winding density of the yarn vary depending on the bobbin B, there is a disadvantage that the quality of the yarn package becomes uneven.

[0009]

SUMMARY OF THE INVENTION The present invention provides a blade traverse device which can solve the above-mentioned problems, and is characterized by a traverse guide having a guide surface, A traverse device that includes two rotating blades that rotate in opposite directions and traverses the yarn wound on the bobbin along the guide surface by the rotating blades. It is configured to be adjustable. In this specification, "up and down" means upstream and downstream along the running direction of the yarn, and "front and rear direction" means a direction crossing the running direction of the yarn. And

Another object of the present invention is to provide a yarn winding device which can solve the above-mentioned problems. The yarn winding device is characterized by a traverse guide having a guide surface and a traverse guide which is arranged vertically and rotates in opposite directions to each other. And a plurality of traversing devices for traversing the yarn wound on the bobbin along the guide surface by the rotating blades in contact with a yarn package formed on the bobbin. In a yarn winding device continuously provided along a rotation axis of a rotating contact roller, an adjacent traverse device is arranged such that positions of a traverse guide and a rotary blade are different in a front-rear direction. Such a configuration is preferably adopted, for example, when the bobbin holder is supported in a cantilevered state. That is, when the distal end side is bent downward because the bobbin holder is cantilevered, the plurality of traverse devices are moved from the base end portion of the bobbin holder to the distal end side in accordance with the amount of bending. Is positioned more forward. Further, the traverse device may be a movable structure capable of adjusting the position in the front-rear direction, or may be fixed at a different position in the front-rear direction.

In the yarn winding device, the adjacent traverse devices are arranged so that the distance from the contact roller in the vertical direction is different so that the rotating blades of the adjacent traverse devices do not interfere with each other. And the free length of the traversing device is set to be equal. Here, "free length" refers to the distance from the position where the yarn contacts the guide surface of the traverse guide to the position where the yarn contacts the contact roller, or from the contact position between the yarn and the rotating blade. It means the distance to the contact position between the strip and the contact roller.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A yarn winding device in which a plurality of bobbins are mounted on a bobbin holder, and a plurality of blade traverse devices are connected to each bobbin so that a plurality of yarn packages can be simultaneously formed. Next, a case where the present invention is applied will be described.

First, the blade traverse device will be described. However, the illustrated blade traverse device is an example, and does not limit the embodiment of the present invention. As shown in FIGS. 4 and 5, the blade traverse device 1 is provided above a contact roller 3 that rotates in contact with a yarn package P formed on a bobbin B mounted on a bobbin holder 2. The yarn Y to be wound is traversed right and left. When the bobbin holder 2 is driven to rotate, the contact roller 3 is a touch roller that contacts and rotates in conjunction with the bobbin holder 2, and when the bobbin holder 2 is driven to rotate, it is a friction roller.

The blade traverse device 1 comprises a traverse guide 4 having a yarn guide surface 10 at a front edge thereof, and two rotating blades 5 arranged in parallel under the traverse guide and rotating at the same speed in opposite directions to each other. 6 is provided. The guide surface 10 of the traverse guide 4 includes, for example, a central portion 10a formed in an arc shape with a radius r1 with the point 01 as the center of the traverse, and portions 10b and 10c extending to both right and left ends thereof.
The left and right end portions 10b and 10c include turning points a and b of the yarn Y to be traversed. The turning points a and b are the transfer points between the rotary blades 5 and 6 of the yarn Y at the same time. Auxiliary guide members 7, 8 are provided on a left end portion 10b of the guide surface 10, and an auxiliary guide member 9 is provided on a right end portion 10c.
Is arranged. Each of the auxiliary guides 7, 8, and 9 is for preventing the yarn from jumping when the yarn Y is transferred between the upper and lower rotating blades 5 and 6, thereby ensuring the transfer. It is supported by the attached brackets 18,18. As shown in FIGS. 6 and 7, the auxiliary guide members 7 and 9 are disposed forward of the yarn path through which the yarn Y passes, and the other auxiliary guide member 8 is disposed rearward of the yarn path. The guide surfaces 7 a, 8 a, 9 a of the members 7, 8, 9 are arranged such that they can slightly contact the yarn Y. The auxiliary guide member 8 can be omitted.

The rotating blades 5 and 6 have respective rotation centers 0
It has a point-symmetric shape with respect to 2,03,
The tip 5a, 6a is the guide surface 1 of the traverse guide 4.
The turning radius is set to protrude forward from zero. However, the diameter of the rotating blades 6 below the upper rotating blades 5 is slightly larger than that of the upper rotating blades 5, and the respective rotation centers 02 and 03 are positioned at the same distance ε to the left and right from the traverse center 01. When the upper and lower rotating blades 5 and 6 are rotated in directions opposite to each other, the guide surface 10
, The tip 5a of the upper rotary blade 5 is set to protrude at the left turning point a, and the lower rotary tip 6a is set to project at the right turning point b.
For convenience, as shown in FIG. 5A, the upper rotating blade 5 rotates counterclockwise, and the lower rotating blade 6 rotates clockwise. Further, as shown in FIGS. 6 and 7, the traverse guide 4 and the rotary blades 5, 6 are arranged so as to be inclined by an angle β (for example, about 30 °) with respect to the horizontal, so that the yarn Y and either the upper or lower The yarn path S from the point of engagement k ₁ , k ₂ with the rotating blades 5, 6 to the point of contact Ta with the contact roller 3 has an angle α (eg, 3 to 7)
°) It is set to tilt only.

When the rotary blades 5 and 6 are rotated at the same speed in the opposite directions to each other with the above settings, the yarn Y traversed leftward along the guide surface 10 by the lower rotary blade 6.
Is transferred to the upper rotating blade 5 at the turning point a. After being traversed rightward by the upper rotating blade 5, it is delivered to the lower rotating blade 6 at the turning point b. Therefore, the blade traverse device 1 can traverse the yarn Y to the left and right along the guide surface 10 of the traverse guide 4 two reciprocations per rotation of the rotary blades 5 and 6.

The blade traverse device 1 is unitized, and the upper and lower rotating blades 5 and 6 and the traverse guide 4
And the like can be integrally moved. When a plurality of the unitized blade traverse devices 1 are connected along the rotation axis of the contact roller 3 to form a yarn winding device, the traverse devices are vertically different as shown in FIG. And a structure in which a part of the adjacent rotating blades 5 and 6 is vertically overlapped with each other. Such a structure makes it possible to reduce the size of the yarn winding device and at the same time avoid interference between adjacent rotating blades 5 and 6. In this case, as shown, the left and right traverse devices U1,
Since U3 and the central traverse device U2 are arranged so that the distance to the contact roller 3 is different, if the yarn is wound up as it is, the yarn length and the diameter of the yarn package are different because the free length is different. Is formed. Therefore, in the present invention, as shown in FIG. 1, the positions of the traverse devices U1 to U3 are changed in the front-rear direction so that the free lengths of the traverse devices U1 to U3 are equal, and the traverse device U2 located below is moved forward. The traverse devices U1 and U3 located above are arranged rearward. Thereby, variation in the shape of the yarn package can be suppressed. The unitized traverse devices U1 to U3 may be fixed to a frame (not shown) with bolts or the like, and the positions of the traverse devices U1 to U3 may be adjustable in the front-rear direction at the time of fixing. .

With such a configuration, each of the traverse devices U1 to U1
The fact that the free length of the yarn in U3 can be made equal will be described with reference to FIG. As shown in the drawing, the yarn Y is connected to the upper or lower rotating blades of the upper traverse device U1 and the point k.
a, and is in contact with the contact roller 3 at a point Ta. Free length Lf at this time
₁ is the length from the engagement point ka to the contact point Ta. On the other hand, the lower traverse device U2 is disposed forward of the upper traverse device U1 so that the engagement point kb with the yarn Y is located forward of the engagement point ka in the upper traverse device U1. Set to. In this way, the point of engagement kb with the yarn Y in the lower traverse device U2 is located at a lower position, but the contact point Tb between the yarn Y and the contact roller 3 also moves downward, so that the free length Lf ₂ the it can be equal to the free length Lf ₁ in traverse device U1.

As described above, according to the present invention, in a yarn winding device in which a plurality of traverse devices are connected in series, when the traverse devices are arranged so that the distance from the contact roller is not constant, each traverse device is provided. Since the free length of the yarn can be set to be equal by appropriately changing the position of the device in the front-rear direction, the quality of the formed yarn package can be kept constant.

In the yarn winding device in which the bobbin holder is supported in a cantilever state (see FIG. 10), the tip side of the bobbin holder bends downward due to the weight. 3 tends to decrease from the base end of the bobbin holder to the distal end. Since the change in the contact pressure affects the winding density of the yarn, there arises a problem that the quality of the yarn package P becomes uneven. Therefore, as shown in FIG. 8, the traverse device U1 extends from the base end to the front end of the bobbin holder.
The positions U7 to U7 are moved forward in accordance with the amount of bending of the bobbin holder. When the traverse device is moved forward, the free length Lf of the yarn becomes longer, so that the winding width of the yarn package becomes narrower and the winding diameter increases. Therefore, the winding diameter of the yarn package P formed on the distal end side of the bobbin holder is larger than the winding diameter of the yarn package P formed on the base end side.
The increase in the winding diameter is caused by the yarn package P and the contact roller 3
And increase the contact pressure. Therefore, the traverse device is moved forward toward the tip end of the bobbin holder where the contact pressure tends to decrease, so that the free length Lf of the yarn is increased, and the winding diameter of the yarn package P is increased. The contact pressure is made uniform and the yarn package P
The quality can be made even.

In a yarn winding device in which adjacent traverse devices are alternately arranged vertically as shown in FIG. 2, in order to keep the free length of the yarn constant, as shown in FIG. Is arranged in front of the upper traverse device. In such a yarn winding device, in order to correct the change in the contact pressure due to the bending of the bobbin holder, the positions of the traverse devices U1 to U8 are moved forward from the base end to the distal end side of the bobbin holder as described above. I just need. In this case, the traverse devices U1 to U8 are arranged, for example, as shown in FIG.
U5 and U7 are traverse devices U1 and U located on the upper side.
3, U5 and U7, and have moved forward toward the tip end side of the bobbin holder as a whole.

Embodiments of the present invention are not limited to those described above. For example, when providing a plurality of blade traverse devices in the yarn winding device, each traverse device may be movable in the front-rear direction, but if the amount of adjustment in the front-rear direction is known in advance, the adjusted Each traverse device may be fixed at a position.

The rotating blades 5 and 6 may be arranged above the traverse guide 4. The shape of the rotating blades 5 and 6 may be such that three tip portions are formed at every 120 ° in the circumferential direction. In this case, the yarn can be traversed three reciprocations for each rotation of the rotary blades 5, 6. Furthermore, in the drawings, one common contact roller 3 is brought into contact with a plurality of yarn packages P. However, a plurality of contact rollers 3 may be provided separately for each yarn package P. In addition, the present invention does not prevent an appropriate change according to the implementation situation.

[0024]

According to the present invention, in a yarn winding device provided with a plurality of blade traverse devices, the positions of the traverse devices in the front-rear direction are made different so that the free length of the yarn is kept constant. Or the desired length can be set, so that the quality of the formed yarn package can be kept constant. When the traverse device is movable in the front-rear direction, the winding length and the winding diameter of the formed yarn package can be easily set to required dimensions by changing the free length.

Further, by arranging the adjacent traverse devices so that the distance from the contact roller is different in the vertical direction, and by adjusting the position in the front-rear direction for each traverse device, the size of the yarn winding device can be reduced. Therefore, it is possible to prevent the rotating blades from interfering with each other between the adjacent traverse devices, and to set the free lengths of the traverse devices to be equal to thereby suppress variations in the package shape. Be demonstrated. Moreover, since the present invention has a simple structure, there is no possibility that the cost will be significantly increased in improving the yarn winding device.

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a plan view of a plurality of blade traverse devices connected in series.

FIG. 2, showing an embodiment of the present invention, is a front view of a plurality of blade traverse devices connected in series.

FIG. 3 is a view for explaining the principle of adjusting the free length of a yarn according to the present invention.

FIG. 4 is a perspective view showing an example of a blade traverse device.

5A and 5B show an example of a blade traverse device, wherein FIG. 5A is a plan view and FIG. 5B is a front view.

FIG. 6 is a side sectional view of a main part at a turning point a of the blade traverse device.

FIG. 7 is a side sectional view of a main part at a turning point b of the blade traverse device.

8A and 8B show different embodiments of the yarn winding device according to the present invention, wherein FIG. 8A is a plan view of a main part, and FIG.
FIG. 3 is a front view of a main part.

FIG. 9 is a plan view of a main part showing still another embodiment of the yarn winding device according to the present invention.

FIG. 10 is a front view showing a schematic configuration of a conventional yarn winding device.

FIG. 11 is a plan view showing a schematic outline of a conventional yarn winding device.

FIG. 12 is a view for explaining a problem in a conventional blade traverse device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Blade traverse device 2 ... Bobbin holder 3 ... Contact roller 4 ... Traverse guide 5, 6 ... Rotating blade 10 ... Guide surface of traverse guide 20 ... Thread winding device a, b ... Thread turning point B ... Bobbin D ... Thread Package winding diameter k, k ₁ , k ₂ ... engagement of yarn with rotary blade ka, kb ... engagement point of yarn with traverse device Lf, Lf ₁ , Lf ₂ ... free length P ... yarn package Ta, Tb: contact point between the yarn and the contact roller t1: rotating shaft of the contact roller U1 to U8: traverse device W: winding width of the yarn package Y: yarn α: inclination angle of the yarn path with respect to the vertical direction
β: The angle of inclination of the rotating blade with respect to the horizontal direction

Claims (3)

[Claims] A traverse guide having a guide surface;
A traverse device comprising two rotating blades arranged vertically and rotating in opposite directions, and traversing a yarn wound on a bobbin along the guide surface by the rotating blade. Characterized in that the position of the blade traverse is adjustable in the front-rear direction. 2. A traverse guide having a guide surface;
A plurality of traverse devices arranged vertically and rotating in opposite directions to each other, and a plurality of traverse devices for traversing the yarn wound on the bobbin along the guide surface by the rotating blades are provided on the bobbin. In a yarn winding device continuously provided along a rotation axis of a contact roller rotating in contact with a formed yarn package, adjacent traverse devices are arranged such that the positions of a traverse guide and a rotary blade are different in the front-rear direction. A yarn winding device. 3. The adjacent traverse device is arranged so that the distance from the contact roller in the vertical direction is different so that the rotating blades of the adjacent traverse device do not interfere with each other. The yarn winding device according to claim 2, wherein the free length is set to be equal.