JPH079871Y2 - Device for winding a wide and flat aggregate fiber strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for winding a fiber strip delivered in a bundled state on a mandrel in the form of a flat tape having an appropriate width.

(Prior Art) Recently, high-performance fibers such as carbon fibers, ceramic fibers, and Kepler fibers are used to improve the strength of structures.
When winding, etc., it is required to make it as thin and flat and wide as possible in order to functionally improve the production efficiency. However, in these aggregate fibers, the cohesion between the fibers is not maintained in the pressed direction. It was difficult to disperse the fibers in a wide state by displacing the fibers.

Further, at the time of winding the above-mentioned high-performance fiber, it is necessary to wind the mandrel so as not to damage the fiber as much as possible, for this reason, the applicant of the present invention guides the fiber strip sent out in a collective state by a plurality of rolls, Proposed as Japanese Patent Application No. 1-112648 a device in which a convex roll having a mid-high arcuate curved surface as the lowest roll is brought close to the mandrel as the lowest roll, and a fiber strip is arranged along the peripheral surface of the roll to wind the mandrel. did.

(Problems to be solved by the invention) However, in the case where the convex roll is pressed against the surface of the mandrel to wind the fiber strip as in the winding device according to the above proposal, the fibers along the convex roll are wound. Since it excessively spreads in the axial direction on its arcuate curved surface, in order to prevent this, a concave roll with the center of the generatrix as a concave surface is provided on the upstream side of the convex roll to temporarily bundle the fiber groups. However, when the yarn is wound around the concave roll, it may be difficult to remove the yarn, which may hinder the continuous winding after that, and there is room for further improvement in this respect.

(Means for Solving the Problems) In view of the above, the present invention has made it easier to remove the wrong yarn wound around the concave roll provided on the fiber strip supply side of the convex roll opposite to the mandrel. Is run along the peripheral surface of a rotary convex roll bulging into an arcuate curved surface to spread the fiber strands flat in the axial direction of the roll, and traverse the flat yarn group in the axial direction. In a roll which is wound around a mandrel while being made to rotate, one end of a concave roll having a tapered concave shape toward the free end and having a curved concave portion in the middle of the generatrix is supported in a cantilever manner on the fiber feed side of the convex roll. It is rotatably supported.

(Operation) In the device of the present invention, before the fiber strip is spread on the convex roll in a wide and flat state and wound on the mandrel, the fiber strip is converged by the concave curved surface of the concave roll to form the fiber strip on the convex roll surface. Since the spread state was made uniform, the concave roll was tapered, and it was rotatably supported in a cantilevered state, so even if an incorrect yarn was accidentally wound around the roll peripheral surface, it was wound from the free end of the roll. The yarn can be easily and easily pulled out, and stable tape-like winding of the fiber strip can be carried out.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings.

The illustrated example shows an example of a winding device to which the present invention is applied. The aggregate fiber strip (a) is a guide roll (1), a dancer roll (2), a traverse member (3) and an upper traverse roll. The traverse member (3) is made to reciprocate within a predetermined width by a rotation interlocking mechanism (3a) such as a known scroll cam so as to lead to the threading interval (5) of (4).

The traverse roll (4) is a pair of conical rolls (4
a) (4b), and their generatrixes are parallel to each other at right angles to the traverse direction so that the fiber strip (a)
To form a threading interval (5) that can be passed through.

As the traverse roll (4), in addition to the pair of conical rolls (4a) and (4b), a linear roll having a length sufficient to prevent the escape of fiber strips as shown by phantom lines in FIG. Sometimes a pair of is used.

(6), (7), and (8) are rolls for guiding the yarns, which are arranged on the front surface of the traverse member (3) along the supply direction of the fiber yarns (a) and rotatably supported, and are the uppermost rolls. (6) is a hemispherical spherical roll whose contact surface (6a) is spherical,
The axis of the spherical roll (6) is orthogonal to the traverse direction,
Further, it is located at a position slightly deviated in the traverse direction from immediately below the threading interval (5). (7) is a concave roll that gives a converging effect to the aggregate fiber strip (a), and the roll (7) is rotatably attached to one end (7b) via a bearing (not shown). Then, the shaft (10) is mounted on a slider (11) mounted on a traverse member (3) so that the mounting angle can be adjusted, and is rotatably supported in a cantilever manner so that the whole is tapered toward the free end. And the portion (7a) which is in contact with the fiber strip (a) supplied from above has a concave curved surface, and the concave roll (7) usually has its axis (l) as shown in FIG. Tilted by an angle θ with respect to the direction (x),
When the axis (l) is parallel to the traverse direction, it has a difficulty in focusing the fiber strip (a) due to the tapered shape.
As described above, the converging function of the fiber strip by the concave curved portion was improved by inclining.

Therefore, the inclination angle of the concave roll (7) is the spherical roll (6).
Curvature, the radius of curvature of the concave curved surface of the concave roll (7) itself, or the degree of focusing required, and the tilting itself is not an essential requirement of the present invention.

The slider (11) is horizontally movably supported by two guide rods (12) and (12 ') protruding from the traverse member (3), and is a coil spring interposed between the slider (11) and the traverse member (3) in a compressed state. Guide bar (12) (12 ') by (13)
Is urged toward the tip of. Also, the slider (11) is a side roll holder (1) fixed to the traverse member (3).
The relative position with respect to the traverse member (3) is fixed by engagement with an adjusting screw (17) screwed to the tip of an eyebolt (16) whose base is supported by a pivot (15) protruding from the upper part of (4). , The coil spring (13) is urged by flipping the eyebolt (16) upward, and the guide rod (12) (1
The concave roll (7) is moved back and forth by retreating to the position where it engages with the retaining pin (18) attached to the tip of 2 ').

(8) is a convex roll for spreading the fiber strip (a) bundled by the concave roll (7) on the surface and winding the fiber strip (a) while pressing it against the surface of the mandrel (9). ) Has a shape in which the middle (8a) of the roll busbar bulges in an arcuate curved surface, and is rotatably supported by the lower end of the side roll holder (14) in a cantilever state so that the axis is parallel to the traverse direction. It

One end of the mandrel (9) is supported by the swing end of the arm (19), and the other end of the arm (19) is rotatably supported about the shaft (10) to form a convex roll (8). It is urged in the direction of contacting with, and rotates away from the convex roll (8) as the winding diameter of the package increases.

In the winding device of the present invention having the above-mentioned structure, the guide roll (1) is passed through the dancer roll (2) and is introduced from above into the threading interval (5) between the parallel generatrixes of the rolls (4a) and (4b). The aggregated fiber filaments a are traversed by the traverse action of the traverse member (3), and the individual filaments of the aggregated fiber filaments are spread in the longitudinal direction within a threading interval (5) perpendicular to the traverse direction, and then, The fiber strip scattered in the direction perpendicular to the traverse direction is a spherical roll (6) axially supported below it.
Mandrel (9) that is pressed against the convex roll (8) after being bent so as to move from the front surface of the concave roll (7) to the back surface of the concave roll (7) and further to the front surface of the lower convex roll (8).
To wind up. Each fiber that has passed through the threading interval (5) contacts the diagonal front surface of the spherical roll (6) and spreads out, and is fed downward at an angle twisted in a direction of about 45 °, and then the fiber strip (a) is lowered. The concave width (7a) of the roll (7) narrows the spreading width of the fiber strip (a) by transporting the fiber along the concave roll (7), and the spreading interval of each fiber by the spherical roll (6). By correcting the unevenness of the rolls and transporting them toward the lower convex roll (8), the fiber strips (a) are spread again at equal intervals in the width direction by the arc-shaped bulging curved surface (8a) of the roll, Mandrel (9) in the form of a flat tape with this spread
Let it wind up.

At this time, the lower convex roll (8) acts as a roller bale in the conventional winding machine by traversing along the winding package surface, but since the contact portion with the package surface is small, the rotation resistance of the mandrel is small. Is significantly less than the conventional roller bale, and the wound layer surface is less damaged due to contact with the wound yarn layer surface.

FIG. 7 shows another embodiment of the concave roll (7) applicable to the present invention.

The concave roll (7) of FIG. 7 (a) has a cylindrical parallel portion (7d) formed continuously on the concave curved surface (7a) on the large diameter side, and when the free end side is formed into a conical shape, In FIG. 7B, the parallel part (7d) and the conical part of (a) above are cut off, and only the concave curved surface (7a) is left.

In the above examples, the fiber strip (a) is spread,
As a roll for guiding while converging, the case of using four sets of five rolls including the traverse roll (4), the spherical roll (6), the concave roll (7), and the convex roll (8) has been described. The spherical roll (6) is not particularly required, and the surface curvature of the rolls (7) and (8), the axial distance,
Depending on the degree of focusing of the fiber strip, flat winding may be performed without using it. However, in this case, by appropriately setting the curvature of the concave curved surface (7a) of the concave roll (7) and the inclination angle θ of the roll (8), the traverse roll (4) can pass the threading interval (5). Twist the flat fiber strips scattered in the length direction of about 45 ° to form a convex roll (8)
By twisting further about 45 ° just before winding on the mandrel, it is secondary-spread by the convex roll (8) without reducing the spread of the fiber by the traverse roll (4) and wound on the mandrel (9). To do.

(Effect of the Invention) According to the present invention, a concave roll tapering toward the free end is pivotally supported in a cantilever state immediately before the convex roll contacting the mandrel. By focusing action, the spreading of the fiber strips on the surface of the lower convex roll is made uniform, and a flat tape-like winding is performed as a good product, and when incorrect yarn is wound on the roll surface, it can be easily and easily from the tapered side of the roll. When the concave roll can be pulled out, and the concave roll can be moved and retracted in the direction orthogonal to the traverse direction, the yarn hooking operation is facilitated in combination with the tapered shape of the roll, and continuous automation is advantageous. Have.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a winding device to which the present invention is applied, FIG. 2 is a side view of the same, and FIG. 3 is a front view of a winding mechanism which is an essential part of the present invention. Is a side view of the mechanism, FIG. 5 is a horizontal cross-sectional view taken along the line VV in FIG. 3, FIG. 6 is a plan view of a traverse roll used in the mechanism, and FIGS. It is a schematic diagram showing a modification of a concave roll applicable to the present invention. (A) ... Fiber strip, (7) ... Concave roll (7a) ... Concave curved part, (8) ... Convex roll (9) ... Mandrel

Claims (1)

[Scope of utility model registration request] 1. A fibrous strip is spread along the circumferential surface of a rotating convex roll having an intermediate portion of a generatrix bulged into an arcuate curved surface to spread the fibrous strip flat in the axial direction of the roll, In a roll wound around a mandrel while traversing the yarn group in the axial direction, a concave roll having a curved concave portion in the middle of the generatrix, which is tapered toward the free end on the fiber yarn supply side of the convex roll. A device that winds a wide and flat aggregated fiber strip that is rotatably supported in a cantilevered state on one end.