JPH05330736A - Bobbin forming method of pitch fiber bundle and its device - Google Patents

Abstract

PURPOSE:To prevent yarn from being retained at both ends of a bobbin and to obtain favorable winding by setting plural types of lengths in half-traverse width of the bobbin surface in forming the bobbin through winding a pitch fiber bundle on the bobbin in the tapered end state. CONSTITUTION:A yarn streak supplied through a tension giving device is wound on a bobbin B with being traversed by a traverse device 100 in the tapered end state. In this traverse device 100, as a follower mounted on a traveler 111 is guided to a cam groove by rotation of a scroll cam 103, the traveler ill is reciprocated along a guide groove in the axial direction. The yarn streak F is traversed along the bobbin B through a traverse guide 121 connected to the traveler 11. At this time, as an inclined bar 124 connected to a traverse quantity control device is oscillated around a pin 123, the length of a half- traverse width on the bobbin surface is adjusted to two to four types.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for winding a fragile pitch fiber bundle on a bobbin in a taper end shape to form a thread winding (package). Traverse width is 2 to 4
Characterized by being wound as a seed, especially 30
The present invention relates to a method and a device for forming a pitch fiber bundle, which is effective for forming a thick pitch fiber bundle having filaments of from 00 to 6000 or more.

[0002]

2. Description of the Related Art Conventionally, the work of forming a winding yarn winding on a bobbin is carried out by winding a fiber bundle around a rotating winding bobbin while traversing the winding bobbin because the pitch fiber bundle is fragile. Further, at this time, in order to prevent the winding end surface of the bobbin from collapsing, the fiber bundle to be damaged, and the unwinding property to deteriorate, a method of forming the bobbin in a tapered end shape is adopted.

[0003]

However, in the conventional method for forming a bobbin, the height of the selvage (thread pool) at both ends of the bobbin is increased.
Occurs and the unwinding property is extremely poor, and when unwinding and using such a bobbin, problems such as collapse of the winding end surface, damage to the fragile pitch fiber bundle, and eventually cutting of the pitch fiber bundle Occurred. In particular, as a thick fiber bundle is wound in large quantities, the degree of such problems tends to increase.

Therefore, an object of the present invention is to eliminate the occurrence of yarn pools at both ends of a pitch fiber bundle, to provide a good winding appearance, and to improve the unwinding property of the bobbin. It is an object of the present invention to provide a method and a device for forming a pitch fiber bundle, which can be effectively applied to large-volume winding of a thick pitch fiber bundle without causing damage or cutting of the pitch fiber bundle.

[0005]

The above object can be achieved by the method and apparatus for forming a pitch fiber bundle according to the present invention. In summary, the present invention is a method for forming a pitched yarn winding of a pitch fiber bundle on a bobbin in a tapered end shape, characterized in that the half traverse width length of the winding surface is 2 to 4 types. This is a method of forming a bundle of yarn.

The above method is very advantageously accomplished by using a traverse device constructed according to the invention.

That is, the traverse device of the present invention is
(A) Cam means that is driven to rotate by a drive motor,
(B) A traveler that linearly reciprocates by a follower slidably fitted in a cam groove formed on the outer surface of the cam means, and (c) a first member rotatably attached to the traveler. A lever formed in a substantially dogleg shape with a second member connected to the first member at a substantially right angle;
(D) A shoe rotatably attached to the first member of the lever, (e) an inclined bar that slidably carries the shoe and is set to be adjustable at a predetermined angle, (f) A traverse guide attached to the second member of the lever, which acts on the yarn or bobbin fed to the bobbin to perform a traverse motion, and (g) sets the angle of the inclined bar to traverse the traverse guide. And a traverse amount adjusting device for controlling the amount, and a scroll cam that is normally used is suitably used as the cam means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and apparatus for forming a pitch fiber bundle according to the present invention will now be described in more detail with reference to the drawings.

FIG. 4 shows a schematic construction of an embodiment of a thread winding device for carrying out the method for forming a thread winding of a pitch fiber bundle according to the present invention.

According to this embodiment, the bobbin winder comprises a bobbin B and a plurality of rollers for supplying a pitch fiber bundle (hereinafter referred to as "thread") F to the bobbin B under a predetermined tension. The tension applying device 300 including 301 to 305, the tension detecting device 200 including the dancer roller 203 for detecting the tension (tension) of the yarn F supplied to the bobbin B, and the traverse device 100.
Have and.

According to the present invention, the yarn F supplied through the tension applying device 300 and the tension detecting device 200 has the traverse device 1 on the bobbin B with such a structure.
While being traversed at 00, it is wound in a taper end shape to form a spool. Details will be described later.

Since the tension applying device 300 and the tension detecting device 200 are devices which are normally used, detailed description thereof will be omitted. Particularly, the bobbin drive device 1 and the traverse device 100 constructed according to the present invention will be described below. ,explain in detail.

According to this embodiment, as shown in FIG. 5, the bobbin winding bobbin B has a bobbin driving device, that is, a magnet spindle 1 through a known coupling means 4.
It is carried by the spindle shaft 2 and is driven in the direction of arrow X. Hereinafter, the structure of the magnet spindle 1 will be described in more detail.

Referring to FIG. 5, a flange 6 formed of, for example, an austenitic stainless steel plate is integrally fixed to the tip of the spindle shaft 2. Also, the flange 6
A plurality of annular conductive discs 10 each having a hole 10a formed in the central portion are attached to the outer peripheral portion of the flange via a stay 8 made of, for example, aluminum. The disc is made of, for example, copper, aluminum, iron or an alloy thereof. Therefore, the conductive disk 10 rotates with the spindle shaft 2.

On one side of the conductive disk 10, on the lower side in FIG. 5, there is provided a rotating disk 12 having a magnetic pole made of a first permanent magnet so as to face one side surface of the disk 10. A rotating circle provided on the other side of the conductive disk 10 and on the upper side in FIG. 5 so as to face the other side surface of the conductive disk 10 and to have a magnetic pole made of a second permanent magnet. A plate 14 is provided. The first and second rotating disks 12, 14 are respectively provided with magnetic disks 16, 18 having a plurality of magnetic poles 20, 22 for cooperating with each other to form a magnetic field through the conductive disk 10. Be done. The magnetic poles 20 and 22 formed on each of the magnetic disks 16 and 18 are usually, but not limited to, 2 to 16 poles, preferably 4 to 8 poles, and the magnetic poles opposed to each other with a conductive disc interposed therebetween. Are usually opposite poles.

The permanent magnet material is a quench hardening type magnet material (K
S steel etc.), precipitation hardening type magnet material (MK steel etc.), powder hardening magnet material, oxide sintered magnet material which is a sintered magnet material, sintered alloy material, or rare earth alloy material, A ferrite permanent magnet material, which is an oxide-sintered metal material that has high performance, can be made compact, and is easily available, is preferably used.
Ferrite permanent magnets are OP magnets, Vectlite, Forr
Oxdure, Ferrinet and Sr ferrite are used.

According to this embodiment, the first rotating disk 12
Is fixed to one end of a support shaft 24 arranged on the same axis as the spindle shaft 2. The support shaft 24 penetrates through the central hole 10a of the conductive disc 10 to form the second rotating disc 1
4 is rotatably fitted in and attached to the hole 26a of the hollow shaft 26 to which 4 is fixed. The hollow shaft 26 and the support shaft 24 are integrally fixed by a set screw 28 provided at the other end.

The spindle shaft 2 and the hollow shaft 26 are rotatably mounted on a fixed housing 30 via bearings 32 and 34.
In addition, it is attached so that there is no axial movement (backlash). At this time, the conductive disk 10 and the magnetic disks 16, 1
Although the gap (G) between 8 and 8 is maintained at a predetermined distance during operation, it is variable between 0.05 and 5 mm depending on the required rotational driving force, and preferably 0.2 to 1.0 mm. Yes,
In this embodiment, it is 0.4 mm. For example, the hollow shaft 26
Is movable with respect to the fixed housing 30, the gap (G) between the conductive disk 10 and the magnetic disk 18 can be made variable, and the conductive screw can be operated by operating the set screw 28. Not only can the gap (G) between the plate 10 and the magnetic disk 16 be changed, but also the hollow shaft 26 and the support shaft 24.
It is possible to change the relative position in the direction of rotation with
The relative position between the rotary disk 12 and the second rotary disk 14 is varied, the rotational drive force of the spindle shaft is varied, and the tension of the yarn wound on the bobbin is varied, as will be described later. It is possible to

In the above structure, the drive motor M is mounted via the gear 36 and the gears 37 and 38 attached to the hollow shaft 26.
The rotational force is transmitted to the hollow shaft 26 from, and the hollow shaft 26 is rotated in the same arrow X direction as the bobbin. With the rotation of the hollow shaft 26, the support shaft 24 is also rotated in the same direction as the hollow shaft 26, and the first rotating disk 12 and the second rotating disk 14 are integrally rotated in the same direction.

As a result, the conductive disc 10 attached to the spindle shaft 2 is arranged across the magnetic flux formed by the magnetic poles 20 and 22 of the rotating first and second rotating discs, Therefore, the first and second rotating discs 12,
As the magnetic poles 20, 22 rotate, the conductive disk 10 generates a force that rotates in the same direction as the first and second rotary disks 12, 14. That is, bobbin B
Is rotated in the direction of arrow X, and the bobbin B winds the yarn F with a predetermined tension (pulling force).

As described above, the adjustment of the pulling force can be made variable by an extremely simple operation such as changing the relative angular position between the first rotary disc 12 and the second rotary disc 14. Alternatively, it can also be carried out by adjusting the rotational speeds of the first and second rotary disks 12 and 14.

The rotation speed of the bobbin B is measured by the rotary encoder RE ₁ via the timing pulley 40, the timing belt 42 and the timing pulley 43 attached to the spindle shaft 2. The rotary encoder RE
The signal from ₁ is transmitted to the traverse device 10 as described later.
Used as 0 drive control signal.

Next, the traverse device 100 will be described.

Referring to FIGS. 6 to 8, the traverse device 100 according to the present embodiment has a cam housing 101 having a cylindrical space 102 therein.
A scroll cam 103 is arranged in one cylindrical space 102. One end 103a of the scroll cam 103 is
In FIG. 7, the left end is rotatably supported by a support shaft 104 provided on the side wall 101a of the cam housing 101 via a bearing 105. Further, the other end 103b of the scroll cam 103 is provided with a drive shaft portion 103c which projects and extends outward from the side wall 101b of the cam housing 101.
03c is rotatably carried by a bearing 106 provided inside the cam housing 101. The drive shaft portion 1
A timing pulley 103d is attached to 03c, and the rotational force of the drive motor M ₁₀₁ (FIG. 4) is transmitted via the timing belt 103e.

On the outer surface of the scroll cam 103, a cam groove 107 having a wind number of 2 to 5 is formed.
A follower 110 is slidably fitted in the cam groove 107. A shaft portion 110a of the follower 110 is rotatably attached to a traveler 111.

The traveler 111 is provided with a main body portion 111a and a guide piece 111b, and the main body portion 111a is a cam housing cover 112 mounted on the upper surface of the cam housing.
It is movably arranged in a guide groove 113 formed along the scroll cam axial direction. The lower surface of the main body portion 111a is slidably carried on the upper surface of the cam housing 101, and the cam housing 10
There is provided a boss portion 111c that projects downward into the cylindrical space 102 of the first unit and to which the follower 110 is rotatably mounted. On the other hand, the guide piece 111b is engaged in the guide groove 114 defined by the upper surface of the cam housing 101 and the lower surface of the cam housing cover 112, and guides the traveler 111 in the axial direction of the scroll cam 103. To do.

Further, the traverse device 100 has a lever 116 rotatably attached to the upper surface of the main body 111a of the traveler 111 by a pin 115. The lever is formed in a substantially V-shape by a first member 116a and a second member 116b connected to the first member 116a at a right angle, and a pin 117 is formed on the first member 116a. The shoe 120 is rotatably attached. In this embodiment, a traverse guide 121 for traversing the yarn F fed to the bobbin is connected to the tip of the second member 116b. Further, the shoe 120 is slidably fitted to an inclined bar 124 which is rotatably attached to a cover plate 122 by a pin 123. The cover plate 122 is fixed to the cam housing cover 112 by a predetermined distance by a spacer ring 125 and a cap screw 126.

With the above structure, when the scroll cam 103 is rotated, the follower 1 mounted on the traveler 111 is rotated.
10 is guided by the cam groove 107, and the traveler 111 is reciprocated along the axial guide groove 113 of the housing cover 112, that is, the axial direction of the scroll cam 103. Therefore, the traverse guide 121 connected to the second member 116b of the traveler 111 is also reciprocated along the scroll cam axial direction to traverse the yarn F along the bobbin B, that is, traverse.

The tilt bar 124 has one end
In this embodiment, the left end portion 124a in FIG. 6 is connected to the traverse amount control device 150, as shown in FIG. In the present embodiment, the traverse amount control device 150 includes a ball screw mechanism 151 having a structure known to those skilled in the art,
Drive motor M for driving the ball screw mechanism 151
₁₀₂ , the nut screw 151a of the ball screw mechanism 151 connected to the tilt bar 124 is linearly moved by driving the drive motor to rotate the parent screw 151a. Rock it around.

FIG. 10 shows the operating member 151b in the most retracted state by the traverse amount control device 150, the tilt bar 124 controls the traverse amount of the lever 116 to the maximum length T _max , and FIG. 11 shows the operating member 151b. Is in the most extended state by the traverse amount control device 150, and the tilt bar 124 controls the traverse amount of the lever 116 to the minimum length T _min . In this way, the traverse amount control device 150 can adjust the half traverse width length (T) of the yarn on the bobbin surface, that is, the moving distance of the traverse guide 121 from one end surface of the bobbin to the other end surface. ..

Next, the operation of the bobbin winder having the above construction will be described.

In FIG. 4, for example, the number of filaments is 3000.
The pitch fiber bundle F composed of
And is fed to the bobbin B via the tension detecting device 200.

In the tension applying device 300 having a plurality of rollers 301 to 305, the drive roller 301 provided at the yarn exit end is driven by the drive motor M ₃₀₀ via the gear box 306 and the belt drive device 307. Are driven at a predetermined rotation speed. On the other hand, the bobbin B is rotationally driven via the magnet spindle 1 which is rotated by the drive motor M as described above, and the yarn wound on the bobbin B is adjusted by adjusting the rotational speed of the bobbin B. F
A predetermined tension is applied to.

The tension detecting device 200 includes two guide rollers 201 and 202 for guiding the yarn F sent from the tension applying device 300 to the bobbin B, and the rollers 2.
01, 202, and the rollers 201, 202
A dancer roller 2 for detecting tension applied to the yarn F by being pressed by the traveling yarn F stretched between them.
03 and. The dancer roller 203 is displaced in the vertical direction according to the change in the tension applied to the yarn F, and the displacement amount is input to the control means 204, which causes the driver 205 of the magnet spindle drive motor M to operate. Control.

Therefore, according to this embodiment, the tension detecting means 200 detects the tension of the yarn F wound on the bobbin B, and the detection result is used to drive the magnet spindle 1, that is, the bobbin B. By using the rotation control of the motor M, a predetermined tension is always applied to the yarn F wound around the bobbin B.

Further, according to the present invention, the yarn F wound on the bobbin B is traversed by the lever 116 and the traverse guide 121 of the traverse device 100, and
The tape is wound in a taper end shape to form a spool. or,
According to the present invention, the half traverse width length (T) of the yarn on the wound surface is 2 to 4 types.

FIG. 1 schematically shows the trajectories of the traverse guides 121 when controlling the half traverse width of the yarn F on the surface of the bobbin when forming the bobbin according to the present invention.

According to this embodiment, the first layer (L ₁ ) of the spool is wound.
In, the half-traverse width length T is configured to increase or decrease by w at both ends of the bobbin. The variation at both ends of the bobbin is not limited to this,
For example, as shown in FIG. 3, it may be configured so as to change in stages by w and w ′ in more stages, but if the half traverse width length T changes in too many stages, the configuration and control mode of the traverse device 100 will be reduced. Because it's too complicated
More importantly, in order to eliminate the yarn accumulation at both ends of the yarn winding and avoid damage to fragile yarns such as the pitch fiber bundle F, the fluctuation of the half traverse width T is 2 to 4
The seed turned out to be suitable. In general, increasing or decreasing the range of half the traverse width dimension T is usually the difference between the maximum width length T _max and the minimum width dimension T _min is become 2 to 20% of the maximum width length T _max is preferred.

According to the present invention, when the thread winding of the first layer (L ₁ ) is formed by using the yarn length of the predetermined length, the winding of the second layer (L ₂ ) is started next. To be done. At this time, both ends of the second layer (L ₂ ) are inward from the first layer (L ₁ ).
The bobbin formation is performed in a state in which it is displaced by w. That is, the maximum half traverse width length T ′ in the second layer (L ₂ )
_max = T _max −2Δw. Also in the second layer (L ₂ ), bobbin winding is performed by gradually increasing or decreasing by w or w, w ′ at both ends of the bobbin. Thereafter, similarly, the third layer (L ₃ ) ... The nth layer (L
_n ) are sequentially wound to form a taper-end bobbin.

According to the present invention, the height of the ears at both ends of the bobbin,
Or ear loss does not occur, and as mentioned above,
No damage is given to the brittle yarn F such as the pitch fiber bundle, and no yarn accumulation occurs at both ends of the yarn winding.

The bobbin formation can be suitably carried out by the traverse device 100 having the above construction.

That is, in the traverse device 100,
When the drive motor M ₁₀₁ is energized by the driver 170,
The scroll cam 103 is rotated at a predetermined rotation speed. As a result, the follower 110 attached to the traveler 111 is guided by the cam groove 107, and the traveler 1
11, the lever 116, and the traverse guide 121 reciprocate along the scroll cam axis direction to traverse the yarn F along the bobbin B, that is, traverse.

As can be seen from FIG. 4, the tilt bar 124 measures the amount of rotation of the scroll cam 103 by the rotary encoder RE ₂ , and the measurement signal is the driver 171 of the tilt bar drive motor M ₁₀₂ . Is transmitted to the control device 172 that controls the tilt angle of the tilt bar 124 according to the rotation of the scroll cam 103. As a result, the half traverse width length T of the yarn F is increased or decreased as the bobbin B rotates.

Further, according to this embodiment, the driver 170 of the scroll cam drive motor M ₁₀₁ is controlled so as to follow the rotational fluctuation of the bobbin B. That is, the actual rotation amount of the bobbin B is measured by the rotary encoder RE ₁ , the measurement signal is transmitted to the control device 173, and the driver 170 of the scroll cam drive motor M ₁₀₁ is controlled.

A pitch fiber bundle (tensile strength 0.018 G
Table 1 shows the result of winding Pa) into a taper end shape.

The diameter of the bobbin used is 317 mm,
The axial width was 320 mm.

[0047]

[Table 1]

According to the above embodiment, the traverse guide 1
21 has been described as a traversing movement of the yarn F fed to the bobbin B, but it is also possible to directly act on the bobbin B to traverse the bobbin B itself.

[0049]

EFFECTS OF THE INVENTION According to the method and apparatus for forming a pitch fiber bundle wound according to the present invention having the above-described structure, it is possible to eliminate the occurrence of a yarn pool at both ends of the pitch fiber bundle,
The winding shape is good, and the unwinding property of the thread winding is good, and the winding end face does not collapse when unwinding, and the pitch fiber bundle is not damaged or cut. It has the effect that a large amount can be wound.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing the trajectories of traverse guides for carrying out the method for forming a pitch fiber bundle according to the present invention.

FIG. 2 is a schematic view of a spool wound around a taper end.

FIG. 3 is a diagram showing another example of trajectories of traverse guides for carrying out the method for forming a yarn winding of a pitch fiber bundle according to the present invention.

FIG. 4 is a schematic configuration diagram of a yarn winding forming device for a pitch fiber bundle according to the present invention.

FIG. 5 is a sectional view of a magnet spindle.

FIG. 6 is a plan view of the traverse device.

FIG. 7 is a vertical sectional view of a traverse device.

FIG. 8 is a cross-sectional view of the traverse device.

FIG. 9 is a plan view of a traverse amount control device.

FIG. 10 is a plan view of a traverse device for explaining a traverse amount control method.

FIG. 11 is a plan view of a traverse device for explaining a traverse amount control method.

[Explanation of symbols]

 100 Traverse device 103 Scroll cam 103 'Flat plate cam 110 Follower 111 Traveler 116 Lever 120 Shoe 124 Tilt bar

Claims (2)

[Claims] 1. A method for forming a pitched yarn winding of a pitch fiber bundle on a bobbin in a tapered end shape, wherein a half traverse width length of the winding surface is 2 to 4 types. Forming method. 2. An apparatus for winding a pitch fiber bundle on a bobbin in a taper end shape to form a bobbin, wherein the bobbin is driven to rotate and the thread guided on the bobbin is a half traverse width length of the bobbin winding surface. And a traverse device for traversing so as to be composed of 2 to 4 types, the traverse device comprising: (a) a cam means that is rotationally driven by a drive motor; and (b) an outer surface of the cam means. A traveler that linearly reciprocates by a follower slidably fitted in a cam groove formed on the first groove; and (c) a first member rotatably attached to the traveler and a substantially right angle to the first member. A lever formed in a substantially V shape with the connected second member, (d) a shoe rotatably attached to the first member of the lever, and (e) a slidable shoe. Supported on
An inclined bar that is adjustable to a predetermined angle, and (f)
A traverse guide attached to the second member of the lever, which acts on the yarn or bobbin fed to the bobbin to perform a traverse motion, and (g) sets the angle of the inclined bar,
And a traverse amount adjusting device that controls the traverse amount of the traverse guide.