JP6547281B2 - Thread guide method - Google Patents

Description

  The present invention relates to a yarn path guiding device and a yarn for guiding a single roving consisting of a bundle of a plurality of strands drawn out from a plurality of cakes and combined in a roving step in a predetermined yarn path direction. It relates to the technology of the route guidance method.

In general, glass fiber roving (hereinafter simply referred to as "roving") focuses hundreds to thousands of glass fibers (monofilaments) consisting of several [μm] fiber diameters using a bundling agent To form a strand, and then, a predetermined number of the formed strands are manufactured by drawing while being aligned.
Here, the roving step for manufacturing the roving is conventionally performed by winding a plurality of strands in a cylindrical shape using a roving manufacturing apparatus described below (for example, see Patent Document 1) See).

That is, the roving manufacturing apparatus mainly includes a creel stand, a tension device, and a winding device, and a plurality of cakes formed by winding a desired number of strands are mounted on the creel stand. Be done.
From the inner peripheral surface of each of the plurality of cakes, the wound strand is pulled out, and the pulled out plurality of strands are combined by passing through the focusing guide and are put together.
Thereby, a single roving consisting of a bundle of a plurality of strands is formed.

The formed roving passes through the focusing guide and is then guided to a yarn path guiding device fixed to the frame of the creel stand, and a predetermined yarn thread is formed via the yarn path guiding roller provided in the yarn path guiding device. You will be guided in the direction of the road. Thus, the roving is transported to the outside of the creel stand.
The roving transported to the outside of the creel stand is changed in the yarn path direction through a plurality of yarn path guide wheels, guided to a tension device, and given a predetermined tension.
Thereafter, the roving is guided to a winding device comprising, for example, an automatic turret-type roving winder, and wound into a cylindrical shape by a predetermined length. Thus, the roving package is manufactured.

Japanese Patent Laid-Open No. 2-14846

  In the conventional roving manufacturing apparatus having such a configuration, the yarn path direction of the roving (a bundle of a plurality of strands) between the creel stand and the tension device depends on the installation place (for example, inside a production plant etc.) It is planned in any direction based on the layout convenience of.

Here, an example of the yarn path direction of the roving R after being transported to the outside of the creel stand 110 in the conventional roving manufacturing apparatus 101 will be described using FIGS. 5 and 6.
FIG. 5 is a schematic front view showing the overall configuration of a roving manufacturing apparatus 101 provided with a conventional yarn path guiding device 120. As shown in FIG. FIG. 6 is an enlarged front view showing the overall configuration of the conventional yarn path guiding device 120. As shown in FIG.
In the following description, for the sake of convenience, the vertical direction, the left-right direction, and the front-rear direction of the yarn path guiding device 120 will be defined by the directions of the arrows shown in FIG. 5 and FIG.
Moreover, in FIG. 5 and FIG. 6, the direction of the arrow A is defined as the transport direction of the roving R.

  For example, as shown in FIG. 5, in the conventional roving manufacturing apparatus 101, the yarn path guide wheel 130 is located on the front upper side and one side of the yarn path guiding device 120 disposed on the creel stand 110 (in this embodiment) Is disposed at a position spaced apart on the right side, and the yarn passage direction of the roving R immediately after passing the yarn passage It may be planned to be inclined in a direction along the axial center Gb of the yarn path guide roller 125 provided at 120, and in the present embodiment, to the right).

In such a case, as shown in FIG. 6, the roving R on the outer peripheral surface of the yarn path guide roller 125 has a yarn path direction (direction of arrow A in FIG. 6) that is tangential to the yarn path guide roller 125 Contact while winding so as to be inclined to one side (right side in this embodiment) of the direction along the axis Gb with respect to (the yarn path direction of the virtual roving Ra in FIG. 6) It becomes.
Therefore, the frictional force from the roving R is added to the outer peripheral surface of the yarn path guide roller 125, and the rotation of the yarn path guide roller 125 around the axis Gb is hindered.
As a result, the roving R receives a load due to the frictional force from the yarn path guide roller 125, which is a factor causing fuzzing. Similarly, the yarn path guide roller 125 is subjected to a load due to the frictional force from the roving R, which causes an early wear of the outer peripheral surface.

  The present invention has been made in view of the above-described problems of the present invention, and it is a yarn path guiding device and a yarn path guiding method for changing the yarn path direction of rovings conveyed in a straight line, A yarn path which can prevent fuzzing of the roving and early wear of the outer peripheral surface of the yarn path guide roller immediately after being switched by the yarn path guide roller of the route guiding device, regardless of the yarn direction of the roving. An object of the present invention is to provide a guiding device and a yarn path guiding method.

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

  That is, the yarn path guiding device according to the present invention is a yarn path guiding device for switching the yarn path direction of rovings conveyed in a straight line, and has a rotation axis orthogonal to the yarn path direction. A yarn path guide roller in tangential contact with the roving, and a pivoting mechanism for rotatably holding the yarn path guide roller about the yarn path direction before conversion. It features.

According to the yarn path guide device of the present invention, the rotational direction of the yarn path guide roller is adjusted in accordance with the converted yarn path direction by rotating the yarn path guide roller by the rotation mechanism. Can. Therefore, the yarn path guide roller can be rotated smoothly.
Therefore, the roving is unlikely to be loaded by the frictional force from the yarn path guide roller, and fuzz can be prevented. Similarly, the yarn path guide roller is unlikely to be subjected to a load due to the frictional force from the roving, and the early wear of the outer peripheral surface can be prevented.

  Further, in the yarn path guiding device of the present invention, the rotation mechanism portion includes a cylindrical outer frame coaxially disposed with the yarn path direction, and the yarn path direction at an inner peripheral portion of the outer frame. A cylindrical inner frame which is coaxially disposed and slidably held by the outer frame and whose downstream end in the yarn path direction is connected to the yarn path guide roller; The frame has a short pipe-shaped guide disposed coaxially with the yarn path direction at the upstream end of the frame in the yarn path direction, and the upstream side of the yarn path direction from the yarn path guide roller It is characterized in that it is arranged in

As described above, according to the yarn path guiding device in the present invention, it is possible to construct a pivoting mechanism with a simple configuration including an outer frame, an inner frame, and a guide and the like, and the entire yarn path guiding device The cost can be reduced and is economical.
Further, in the yarn path guiding device according to the present invention, the roving passed through the guiding guide is guided to the yarn path guiding roller through the inner peripheral portion (a space portion surrounded by the inner peripheral surface) of the inner frame.難 く 難 く 不 難 く ロ ロ, 導 く 不 、 ロ ロ ロ 、 、 、 、 、 不 不 不 不 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く 難 く.

  In the yarn path guide device of the present invention, the yarn path guide roller is characterized by having a supporting member rotatably supporting the yarn path guide roller in a cantilever state by the inner frame.

  As described above, in the yarn path guiding device according to the present invention, since the yarn path guide roller is supported by the support member in a cantilever state, the roving operation along the outer peripheral surface of the yarn path guide roller In the case of performing the above-mentioned operation, the handling operation can be performed easily with almost no interference with the operation by the support member.

  Further, the yarn path guiding method of the present invention is a yarn path guidance method for changing the yarn path direction of rovings conveyed in a straight line, and the roving has a rotation axis orthogonal to the yarn path direction. The yarn path direction of the roving is changed by bending along the yarn path guide roller tangentially contacted with the roving on the outer peripheral surface, and the yarn path guide roller is converted to the yarn path before the conversion. It is characterized in that it is rotatably held around a direction, and the rotation axis of the yarn path guide roller is made orthogonal to the yarn path direction after conversion.

As described above, according to the yarn path guiding method in the present invention, by rotating the yarn path guide roller around the yarn path direction before conversion, the yarn path guide roller according to the converted yarn path direction The rotation axis direction can be adjusted. Therefore, the yarn path guide roller can be rotated smoothly.
Therefore, the roving is unlikely to be loaded by the frictional force from the yarn path guide roller, and fuzz can be prevented. Similarly, the yarn path guide roller is unlikely to be subjected to a load due to the frictional force from the roving, and the early wear of the outer peripheral surface can be prevented.

  According to the yarn path guiding device and the yarn path guiding method of the present invention, the roving fluffs or the yarn path immediately after being converted by the yarn path guiding roller of the yarn path guiding device regardless of the roving yarn path direction. It is possible to prevent early wear of the outer peripheral surface of the guide roller.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic side view which showed the whole structure of the roving manufacturing apparatus provided with the yarn route guidance apparatus which concerns on one Embodiment of this invention. It is the figure which showed the whole structure of the thread route guide apparatus based on one Embodiment of this invention, Comprising: Sectional drawing seen from the direction of arrow X in FIG. The front view which showed the whole structure of the thread route guidance apparatus. It is a figure showing a state of the yarn route guiding device when guiding the roving in a predetermined yarn direction, (a) is a front view thereof, (b) is a direction of an arrow Y in FIG. 4 (a) Sectional view seen from. The schematic front view which showed the whole structure of the roving manufacturing apparatus provided with the conventional yarn route guidance apparatus. The enlarged front view which showed the whole structure of the conventional yarn route guidance apparatus.

  Next, an embodiment of the invention will be described.

[Roving manufacturing apparatus 1]
First, an overall configuration of a roving manufacturing apparatus 1 including a yarn path guiding device 20 embodying the present invention will be described with reference to FIGS. 1 and 5.
In the following description, for convenience, the vertical direction, the left-right direction, and the front-rear direction of the roving manufacturing apparatus 1 will be defined by the directions of the arrows shown in FIG.
Further, in FIG. 1, the direction of the arrow A will be described as the transport direction of the roving R (or the strand S).

The roving manufacturing apparatus 1 in the present embodiment is a roving R (glass (glass) in which strands S · S... Fiber roving) and then wound into a cylindrical shape to produce a package of roving R.
Here, the cake 100 is made of glass fibers (monofilaments) having a fiber diameter of several [μm] by drawing a glass melt of about 1200 [° C.] melted in a glass melting furnace from a large number of bushing nozzles. The fiber is formed (spun), and the hundreds to thousands of glass fibers thus formed are gathered using a sizing agent to form a strand S, and the formed strand S is wound into a cylindrical shape. Be done.

The roving manufacturing apparatus 1 mainly includes a creel stand 10, a yarn path guide device 20, a yarn path guide wheel 30, a tension device 40, a winding device 50, and the like.
The creel stand 10 holds a plurality of cakes 100, 100, ... collectively and simultaneously pulls out strands S, S, ... from the cakes 100, 100, ... and a plurality of drawn strands the S · S ···, is intended to doubling together in one.

The creel stand 10 is provided with a frame body frame 11 serving as a base body, and a plurality of shelf portions 12 are arranged inside the frame body frame 11.
Each shelf 12 is configured to be able to simultaneously withdraw a strand S · S ··· from each cake 100 · 100 ··· while holding together a plurality of cakes 100 · 100 ··· ing.
Further, on one end side (for example, the front end side in the present embodiment) of the shelf portion 12, a focusing guide 13 for combining a plurality of strands S · S... Is disposed.

  The plurality of strands S · S ··· drawn out from the inner peripheral surface of each of the cakes 100 · 100 · · · held by each shelf 12 are aligned with each other by passing through the focusing guide 13 The yarn is mixed and bundled into a single roving R consisting of a bundle of strands S · S.

Immediately after passing the focusing guide 13, the formed roving R is guided to the yarn path guiding device 20 to be described later, and the predetermined yarn path direction (the direction of the arrow A in FIG. Direction) and sent out to the outside of the creel stand 10.
Thereafter, the roving R is guided to the tension device 40 while changing the yarn path direction by a plurality of (two in the present embodiment) yarn path guide wheels 30 and 30.

The tension device 40 sequentially measures the length of the roving R to be transported, and when the measured value reaches a predetermined winding length, stops the operation of the winding device 50 and adds a predetermined tension at the same time. It is for stopping conveyance of roving R.
The tension device 40 is configured by a powder brake type drive roller (not shown) that switches the conveyance / stop of the roving R, a side long roller (not shown) that measures the length of the roving R, and the like.

  Then, the roving R led to the tension device 40 is wound around the powder brake type driving roller and the side length roller in order, sent out from the device again, and led to the winding device 50.

  The winding device 50 is for winding the roving R. For example, in the present embodiment, the winding device 50 is constituted by an automatic turret type roving winder.

  In the roving manufacturing apparatus 1 configured as described above, the roving R mated by the creel stand 10 is conveyed in order of the yarn path guiding device 20, the yarn path guide wheel 30, and the tension device 40, and the winding device 50 Is wound as a cylindrically shaped package.

The direction of threading of the roving R between the creel stand 10 and the tension device 40 may be any direction depending on the layout of the installation location of the roving manufacturing apparatus 1 (for example, the interior of a production plant). It is possible to plan.
Specifically, for example, as in the conventional roving manufacturing apparatus 101 shown by FIG. 5, the yarn path guide wheel 130 is located on the front upper side and one side with respect to the yarn path guiding device 120 (in the present embodiment) The yarn path direction of the roving R immediately after passing through the yarn path guiding device 120 is arranged in the lateral direction in front view (the yarn path guiding device 120). The roving manufacturing apparatus 1 according to the present embodiment is a direction along the axial center Gb of the yarn path guide roller 125 provided in the case and is inclined in the present embodiment). According to this, the roving R can be transported while preventing fuzzing by the yarn path guiding device 20 described later.

[Thread guide device 20]
Next, the configuration of the yarn path guiding device 20 in the present embodiment will be described using FIGS. 2 to 4.
In the following description, for convenience, the vertical direction, the left-right direction, and the front-rear direction of the yarn path guiding device 20 will be defined by the directions of the arrows shown in FIGS. 2 to 4.
Further, in FIGS. 2 to 4, the direction of the arrow A is defined as the transport direction of the strand S (or roving R).

As described above, the yarn path guiding device 20 is for regulating the yarn path direction of the roving R which is conveyed in a straight line to the outside of the creel stand 10 through the focusing guide 13.
As shown in FIG. 2, the yarn path guiding device 20 mainly includes a housing 20A, a support roller 20B, and the like.

The housing portion 20A is a portion to be a base of the yarn path guiding device 20, and a yarn path to be described later with respect to the yarn path direction of the straight roving R guided by the focusing guide 13 (see FIG. 1). It is a part provided as a rotation mechanism part which holds the guide roller 25 rotatably.
The housing 20A includes the outer frame 21, the inner frame 22, the guide 23, the holding member 24, and the like.

The outer frame 21 is formed of a cylindrical member having both ends open.
Further, the outer frame 21 is coaxial with the threading direction of the straight roving R passing through the focusing guide 13 (in the axial center G in FIG. 2) in the vicinity of the front side (downstream side in the threading direction) of the focusing guide 13 ) And fixed to the frame 11 of the creel stand 10 via the outer peripheral surface.

The inner frame 22 is integrally formed by a cylindrical main body portion 22a whose both ends are opened and a disk shaped flange portion 22b coaxially fixed on one end side of the main body portion 22a.
As will be described later, a guide 23 is provided in the center of the flange portion 22b.

  In the inner frame 22, the outer diameter of the main body 22 a is set to be substantially the same as the inner diameter of the outer frame 21, and the length of the main body 22 a is smaller than the length of the outer frame 21. Is set to be slightly short.

Then, the inner frame 22 is coaxially inserted into the inner peripheral portion (a space portion surrounded by the inner peripheral surface) of the outer frame 21 through the main body portion 22a.
Thus, the inner frame 22 is disposed on the inner periphery of the outer frame 21 coaxially with the threading direction of the straight roving R passing the focusing guide 13 (on the axis G in FIG. 2). , And slidably disposed with respect to the outer frame 21.

  The outer diameter dimension of the flange portion 22b is set to be approximately the same as the outer diameter dimension of the outer frame 21, and the peripheral edge portion of the flange portion 22b abuts on the end surface of the outer frame 21. Movement of the inner frame 22 in the axial direction is restricted.

  The holding member 24 is formed of an annular plate-like member, and the inner diameter thereof is set to be substantially the same as the inner diameter of the main body 22a of the inner frame 22, and the outer diameter thereof is set to the outer frame It is set to be approximately the same as the outer diameter of 21.

The holding member 24 is disposed coaxially with the main body 22a on the other end side (the front end in the present embodiment) of the main body 22a of the inner frame 22, and a fastening member such as a plurality of bolts is provided. And is detachably fixed to the main body 22a.
Thus, by tightening the fastening member, the outer frame 21 is firmly held in the axial direction by the clamping member 24 and the flange portion 22b of the inner frame 22, and the inner frame 22 is It is firmly held to the outer frame 21.

The guide 23 is formed of a short tube-shaped member, and a flange portion 23a is formed on one end side (the rear end side in the present embodiment) of the guide.
The guide 23 is formed coaxially with the inner frame 22 and penetrates the flange 22b of the inner frame 22 from the end (the front end in the present embodiment) opposite to the flange 23a. . At this time, the flange portion 23a abuts on the flange portion 22b, whereby the position of the guide 23 in the axial direction with respect to the inner frame 22 is regulated.

Also, in the main body 22a of the inner frame 22, the yarn path guide roller 25 is fixed via the support member 27 and the like to the holding member 24 provided on the opposite side to the flange 22b as described later. Ru.
From this, in the flange portion 22b disposed at the end of the main body portion 22a of the inner frame 22 opposite to the yarn guide roller 25 side, the guide 23 passes through the focusing guide 13 in a straight line. It is disposed coaxially with the threading direction of the roving R (on the axis G in FIG. 2). That is, the guide 23 is disposed at the rear end of the inner frame 22 (upstream end in the yarn path direction).

Next, the support roller portion 20B will be described.
The support roller portion 20B is a portion for bending the roving R to forcibly switch the yarn path direction of the roving R.
The support roller portion 20B is configured by the yarn path guide roller 25, the rotation shaft 26, the support member 27, and the like.

The yarn path guide roller 25 is formed of, for example, a hollow tubular member made of a light metal such as aluminum, and the outer peripheral surface thereof is subjected to an alumite treatment.
As described above, by using a light metal such as aluminum as the material of the yarn path guide roller 25, the load due to the frictional force or the like is reduced for the roving R in contact with the yarn path guide roller 25. .
In addition, by applying an alumite treatment to the outer peripheral surface of the yarn path guide roller 25, early wear of the outer peripheral surface is prevented.

  The rotating shaft 26 is formed by a round bar member, and the outer diameter dimension thereof is set sufficiently smaller than the inner diameter dimension of the yarn path guide roller 25.

The rotary shaft 26 is disposed coaxially with the yarn guide roller 25 (on the axis Ga in FIG. 2) on the inner circumferential portion of the yarn guide roller 25.
Further, bearing members 28 are provided at both ends of the rotary shaft 26, and the yarn path guide roller 25 is rotatably supported by the rotary shaft 26 via these bearing members 28. Ru.

The support member 27 is formed of a member consisting of two flat portions connected in an L shape.
In one flat portion of the support member 27 (hereinafter referred to as "first flat portion 27a"), the rotary shaft 26 is in contact with one end face at the center and perpendicular to the first flat portion 27a. It is arranged to extend in the direction and is fixed via a fastening member such as a bolt.
On the other hand, in the other flat portion of the support member 27 (hereinafter referred to as "second flat portion 27b"), the flat surface on the opposite side to the first flat portion 27a side (that is, the yarn path guide roller 25 side) The support member 27 is fixed on a plane of the holding member 24 on the side opposite to the inner frame 22 side via a fastening member such as a bolt.

Thus, the yarn path guide roller 25 is connected to the inner frame 22 via the support member 27 and the holding member 24 and the like.
In other words, the yarn path guide roller 25 is rotatably supported by the inner frame 22 via the first flat portion 27 a of the support member 27 in a cantilever state.
Thus, in the present embodiment, since the yarn path guide roller 25 is supported by the support member 27 in a cantilevered state, the routing operation of roving R along the outer peripheral surface of the yarn path guide roller 25 In the case of performing the above, the handling operation can be performed easily with almost no interference with the operation by the support member 27.

  Further, regardless of the rotational movement of the inner frame 22 with respect to the outer frame 21, the yarn path guide roller 25 has an axial direction (direction of the axial center Ga in FIG. 2) in the direction of the axial center G (ie, a focusing guide It is arranged to be orthogonal to the straight yarn path direction of roving R which has passed 13).

The housing portion 20A provided as a rotation mechanism portion is disposed upstream of the yarn path guide roller 25 in the yarn path direction of the straight roving R passing through the focusing guide 13.
That is, the yarn path guide roller 25 is connected to the downstream end of the inner frame 22 in the yarn path direction.
By having such a configuration, the roving R which has passed the guide 23 is guided to the yarn path guide roller 25 through the inner peripheral portion of the inner frame 22 and is unlikely to receive an unexpected obstacle from the outside. The roving R can be guided to the yarn path guide roller 25 stably.

  Further, as shown in FIG. 3, the yarn path guide roller 25 circumscribes the axial center G at the center in the axial center direction of the outer peripheral surface regardless of the rotational movement of the inner frame 22 with respect to the outer frame 21 ( That is, they are arranged in tangential contact with the straight roving R which has passed through the focusing guide 13).

The yarn path guiding device 20 configured as described above has the axial center G directed toward the focusing guide 13 side in the vicinity of the downstream side of the focusing guide 13 provided on each shelf 12 of the creel stand 10. Is arranged to coincide with the yarn path direction of the roving R immediately after passing the focusing guide 13.
Thereby, the roving R which has passed the focusing guide 13 passes the guide 23, the main body 22 a of the inner frame 22 and the holding member 24 in this order along the axis G, and is circumscribed by the outer peripheral surface of the yarn path guide roller 25. The Rukoto.

In addition, when the inner frame 22 is rotated with respect to the outer frame 21, the yarn path guide roller 25 is also rotated following the inner frame 22, but the inner frame 22 (ie, the yarn guide roller As long as 25) is rotated about the axial center G, the yarn path guide roller 25 also rotates about the axial center G (introduction position of roving R).
Therefore, the roving R which has passed the focusing guide 13 is circumscribed to the outer peripheral surface of the yarn guide roller 25.

By the way, as described above, for example, in the present embodiment, the yarn path direction of the roving R is set to the yarn path guiding device 20 for convenience of the layout of the installation place of the roving manufacturing apparatus 1 (see FIG. 1). After passing, it is planned to be inclined upward and laterally (in the direction of the axis Ga of the yarn guide roller 25).
Specifically, as shown in FIG. 4B, the roving R led from the focusing guide 13 (see FIG. 1) passes through the guiding guide 23 to reach the yarn path guide roller 25 and the yarn While bending along the outer peripheral surface of the path guide roller 25, the yarn path direction is changed in the upward direction and in the lateral direction.

Here, as shown in FIG. 4A, for example, in the conventional yarn path guiding device 120 (see FIG. 6), since the position of the yarn path guide roller 125 can not be changed, the conventional yarn path can be changed. On the outer peripheral surface of the guide roller 125, the frictional force from the roving R after the yarn path direction change in a direction inclined to the axial direction (direction of the axis Gb in FIG. 4A) with respect to the tangential direction. As a result, the rotation of the yarn path guide roller 125A around the axis Gb is impeded.
As a result, a large load is applied to the roving R due to the frictional force from the yarn path guide roller 125, which is a factor causing fuzzing. Similarly, the yarn path guide roller 125 is subjected to a load due to the frictional force from the roving R, which causes an early wear of the outer peripheral surface.

On the other hand, according to the yarn path guiding device 20 in the present embodiment, by rotating the yarn path guide roller 25 by the rod portion 20A as the rotation mechanism portion, the yarn according to the converted yarn path direction The rotation axis direction of the path guide roller 25 can be adjusted. Therefore, the yarn path guide roller 25 can be rotated smoothly.
Therefore, the roving R is unlikely to be loaded by the frictional force from the yarn path guide roller 25, and fuzz can be prevented. Similarly, the yarn path guide roller 25 is unlikely to be subjected to a load due to the frictional force from the roving R, and early wear of the outer peripheral surface can be prevented.

The above pivoting mechanism is an example, and any mechanism may be adopted as long as it can pivot the rotational axis direction of the yarn path guide roller 25 with respect to the yarn path direction of the roving R before conversion.
For example, a gear mechanism interlocked with the inner frame 22 may be provided, and the yarn path guide roller 25 may be rotatable and fixed by operation and locking of the mechanism.

In the above embodiment, the yarn path guide roller 25 is cantilevered by the support member 27. However, the yarn path guide roller 25 may be supported by the support member 27.
In the case of such a configuration, even when an excessive load is applied to the yarn path guide roller 25, the position of the yarn path guide roller 25 does not easily shift, and the roving R can be stably traveled.

20 Thread guide device 20A Housing (rotational mechanism)
Reference Signs List 21 outer frame 22 inner frame 23 guide guide 25 yarn path guide roller 27 support member Ga rotational axis R roving

Claims (3)

A yarn path guiding method for switching the yarn path direction of rovings conveyed in a straight line, comprising:
The yarn path direction of the roving by bending the roving along a yarn path guide roller having a rotation axis orthogonal to the yarn path direction and being in tangential contact with the roving on the outer peripheral surface Switch
Holding the yarn path guide roller rotatably around the yarn path direction before the conversion;
After adjusting the rotation axis of the yarn path guide roller to be orthogonal to the converted yarn path direction, the yarn path guide roller is held.
A yarn guide method characterized in that. The yarn path guide roller is held by a rotating mechanism that can rotate around the yarn path direction before the conversion,
The rotation mechanism unit is
A cylindrical outer frame disposed coaxially with the yarn path direction;
The inner frame portion of the outer frame is disposed coaxially with the yarn path direction, and is slidably held rotatably by the outer frame, and the downstream end portion in the yarn path direction is the yarn path guide A cylindrical inner frame connected with the rollers,
A short pipe-shaped guiding guide disposed coaxially with the yarn path direction at an upstream end of the inner frame in the yarn path direction;
Have
Disposed upstream of the yarn path guide roller in the yarn path direction,
A yarn path guiding method according to claim 1, characterized in that. The yarn path guide roller is connected to the inner frame by a support member,
The support member rotatably supports the yarn path guide roller in a cantilever state.
Characterized in that the yarn guidance method according to 請 Motomeko 2.

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