CN1911637A - Fiber winding method of flat roller yarn discharging - Google Patents

Abstract

The present invention relates to flat roller yarn arranging fiber winding technology, and is especially improved flat roller yarn arranging fiber winding process. The fiber winding process includes the following steps: 1. fixing the core mold between the three-jaw chuck and the finial of the digitally controlled fiber winding machine; 2. determining the position of the swinging rotation plane relatively to the yarn falling point A; 3. determining the winding linear locus equation; 4. determining A1, B1 and the yarn discharging point B specifically; 5. finding out the beta angle; and 6. feeding the winding digitally controlling code into the digitally controlled fiber winding machine to complete the fiber winding of the core mold. The present invention can reach the yarn arranging precision up to 0.01 mm, and has excellent yarn expanding effect, easy control of the glue content and sizes of the wound member and smooth surface of the member.

Description

The fiber winding method of flat roller yarn discharging

Technical field

What the present invention relates to is the technical field that the flat roller yarn discharging fiber twines.

Background technology

The flattening degree of yarn bundle and row's yarn precision were the key factors that component quality is twined in influence during fiber twined.And the flattening of yarn bundle finally is to be realized by row's yarn roller on the fiber winding machine yaw parts.General unpowered follower structure or the circular ring structure of adopting of existing fiber winding machine yaw.Thus, the shortcoming of bringing is:

(1) the servo-actuated yaw is because yaw rotates by yarn drives, and when less or cotton yarn tape was narrow when warp tension ratio, yaw can occur swinging situation not in place, influence yarn Shu Zhanping and arranges the yarn precision;

(2) circular ring structure produces poly-yarn effect because row's yarn roller is an annular during row's yarn, and the yarn bundle is the thin phenomenon in thick middle both sides, and exhibition yarn effect is bad.In addition, yarn bundle different with winding position and angle horizontally slip along annulus during winding, thus influence row yarn precision, and thread wear is also relatively more serious, directly influences the quality of winding product.

Summary of the invention

The present invention is that yarn Shu Zhanping is bad, row's yarn precision is low, gather the problem that the yarn effect is obvious, thread wear is serious for the unpowered servo-actuated yaw that overcomes existing fiber winding machine exists with the circular ring structure yaw, and then a kind of fiber winding method of flat roller yarn discharging is provided.

Winding step of the present invention is:

One, with the core clamping the scroll chuck of numerical control fiber winding machine and top between;

Two, according to doff the relatively position of an A of the size decision yaw plane of rotation of the length of the size of core, suspension wire and winding angle, its decision principle is: core is big more, suspension wire is long more or winding angle is big more, the plan-position is just far away more from the core mandrel, otherwise just near more;

Three, determine the line style equation of locus of winding, it determines that principle is: according to the shape of core, the fiber winding path of demands for bearing capacity design, and the movement locus of an A that promptly doffs, this track is generally geodesic curve or non-geodesic curve; After geodesic curve or non-geodesic curve equation of locus discretization, obtain a plurality of coordinate points, by sound coordinate system conversion (promptly the A point coordinates moving coordinate system under being transformed into coordinate under the quiet coordinate system) the A point is in and illustrates the quadrant position;

Four, determine the coordinate of A1, B1 and yarn leaving point B (as Fig. 3);

Five, ask for the β angle by following formula:

s1＝BB1＝AB1·ctgα＝(R+a)cos(δ)ctgα，s2＝Rcos(δ)

Wherein: $\sin \left(\mathrm{\δ}\right)=\frac{R}{R+a}$

$\mathrm{ctg}\left(\mathrm{\&beta;}\right)=\frac{\mathrm{BB}1}{A1B1}=\frac{s1}{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20061001047100071.png"\; state="\{\{state\}\}">s</figure-callout>}2}=\frac{\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\cos \left(\mathrm{\&delta;}\right)(R+a)}{\cos \left(\mathrm{\&delta;}\right)R}=\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\frac{R+a}{R};$

Six, write the winding numerical control code according to parameters such as the pivot angle β of wrapping machine A coordinate, yarn leaving point B coordinates, will twine numerical control code to be input in the numerical control fiber winding machine, the fiber that the numerical control fiber winding machine is finished core twines.

The present invention can the row's of making yarn precision reach 0.01mm, and precision is guaranteed; Yaw flat roller structure being exhibition yarn effect is obvious, and the gel content and the geomery that twine member are more easy to control; Component surface is smooth, without secondary operations.Simultaneously, can adopt wideer yarn wrapping around, improve to twine efficient greatly.

Description of drawings

Fig. 1 is a winding step flow chart of the present invention, and Fig. 2 is the winding yarn axis projection schematic diagram in the method step three of the present invention, and Fig. 3 is the yarn perspective view in the method step four of the present invention.

The specific embodiment

The specific embodiment one: in conjunction with Fig. 1, Fig. 2, Fig. 3 present embodiment is described, the winding step of present embodiment is:

One, with the core clamping the scroll chuck of numerical control fiber winding machine and top between;

Two, according to doff the relatively position of an A of the size decision yaw plane of rotation of the length of the size of core, suspension wire and winding angle, its decision principle is: core is big more, suspension wire is long more or winding angle is big more, the plan-position is just far away more from the core mandrel, otherwise just near more;

Three, determine the line style equation of locus of winding, it determines that principle is: according to the shape of core, the fiber winding path of demands for bearing capacity design, and the movement locus of an A that promptly doffs, this track is generally geodesic curve or non-geodesic curve; After geodesic curve or non-geodesic curve equation of locus discretization, obtain a plurality of coordinate points, by sound coordinate system conversion (promptly the A point coordinates moving coordinate system under being transformed into coordinate under the quiet coordinate system) the A point is in and illustrates the quadrant position; Its determining step is (as Fig. 2):

1, get the core cross section, radius is represented with R and axle center O;

2, get yaw centrode subpoint B, B1 and an A that doffs, satisfy radius OA perpendicular to line segment AB, promptly suspension wire AB crosses the tangent line that A is ordered on the cross section;

3, connect OB, meet at the E point with mandrel surface;

4, cross the vertical line AA2 that some A makes OB; The length that (wherein the length of AA2 is exactly a little the height s2 of doffing) gets BE is a, and the angle of line segment AB and line segment OB is δ;

Four, specifically determine A1, B1 and yarn leaving point B (as Fig. 3);

Its determining step is:

1,, draws the yaw plane of rotation and an A that doffs according to step 2;

2, cross the A point to yaw plane of rotation upright projection, intersection point is the A1 point;

3, get the projection BB1 of core mandrel on the yaw plane of rotation; This straight line is exactly the trajectory at plain-barreled roll center;

5, cross the vertical line that A1 point is made straight line BB1, and connection A1B1, demonstrate,prove AB1 perpendicular to BB1; Wherein, the length of line segment A1B1 is doff point height s2;

6, determine line segment AB according to the size of winding angle α, wherein the B point is the intersection point of straight line AB and straight line BB1; The length of line segment BB1 is to twine overlength s1;

7, connect A1 and B 2 points, get line segment A1B, and mistake B point is done the vertical line perpendicular to straight line A1B, i.e. plain-barreled roll position among the figure in the yaw plane of rotation;

8, cross the vertical line that the B point is made straight line BB1, the angle of plain-barreled roll and this straight line is β, is the pivot angle of wrapping machine A coordinate;

Five, ask for the β angle by following formula:

s1＝BB1＝AB1·ctgα＝(R+a)cos(δ)ctgα，s2＝Rcos(δ)

Wherein: $\sin \left(\mathrm{\&delta;}\right)=\frac{R}{R+a}$

$\mathrm{ctg}\left(\mathrm{\&beta;}\right)=\frac{\mathrm{BB}1}{A1B1}=\frac{s1}{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="A20061001047100071.png"\; state="\{\{state\}\}">s</figure-callout>}2}=\frac{\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\cos \left(\mathrm{\&delta;}\right)(R+a)}{\cos \left(\mathrm{\&delta;}\right)R}=\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\frac{R+a}{R};$

S1 is for twining the overlength (see figure 3);

S2 is the height (see figure 3) that doff is put relative core axle center horizontal plane;

α is a winding angle, is that the winding path line is in the tangent line of an A that doffs and the angle (see figure 3) between the core bus;

R is the radius (see figure 2) in the cross section of the current excessively A that doffs of core;

A be yarn leaving point to mandrel surface apart from (see figure 2);

β is the corner (see figure 3) of yaw;

δ is the angle (see figure 2) of fiber suspension wire and horizontal plane;

Six, write the winding numerical control code according to parameters such as the pivot angle β of wrapping machine A coordinate, yarn leaving point B coordinates, will twine numerical control code to be input in the numerical control fiber winding machine, the fiber that the numerical control fiber winding machine is finished core twines.

The model that above-mentioned numerical control fiber winding machine is selected for use is a HG-2 jet pipe large-sized numerical control numerical control fiber winding machine.

Claims (3)

1, the fiber winding method of flat roller yarn discharging is characterized in that its winding step is:

(1), with the core clamping the scroll chuck of numerical control fiber winding machine and top between;

(2), according to doff the relatively position of an A of the size decision yaw plane of rotation of the length of the size of core, suspension wire and winding angle, its decision principle is: core is big more, suspension wire is long more or winding angle is big more, the plan-position is just far away more from the core mandrel, otherwise just near more;

(3), the line style equation of locus that determine to twine, it determines that principle is: according to the shape of core, the fiber winding path of demands for bearing capacity design, the movement locus of an A that promptly doffs, this track is generally geodesic curve or non-geodesic curve; After geodesic curve or non-geodesic curve equation of locus discretization, obtain a plurality of coordinate points, make the A point be in diagram quadrant position by the conversion of sound coordinate system;

(4), determine the coordinate of A1, B1 and yarn leaving point B;

(5), ask for the β angle by following formula:

s1＝BB1＝AB1·ctgα＝(R+a)cos(δ)ctgα，s2＝Rcos(δ)

Wherein: $\sin \left(\mathrm{\&delta;}\right)=\frac{R}{R+a}$

$\mathrm{ctg}\left(\mathrm{\&beta;}\right)=\frac{\mathrm{BB}1}{A1B1}=\frac{s1}{s2}=\frac{\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\cos \left(\mathrm{\&delta;}\right)(R+a)}{\cos \left(\mathrm{\&delta;}\right)R}=\mathrm{ctg}\left(\mathrm{\&alpha;}\right)\frac{R+a}{R};$

(6), write the winding numerical control code, will twine numerical control code to be input in the numerical control fiber winding machine, the fiber that the numerical control fiber winding machine is finished core twines according to parameters such as the pivot angle β of wrapping machine A coordinate, yarn leaving point B coordinates.

2, the fiber winding method of flat roller yarn discharging according to claim 1 is characterized in that the definite step in the step 3 is:

(1), get the core cross section, radius is represented with R and axle center O;

(2), get yaw centrode subpoint B, B1 and an A that doffs, satisfy radius OA perpendicular to line segment AB, promptly suspension wire AB crosses the tangent line that A is ordered on the cross section;

(3), connect OB, meet at the E point with mandrel surface;

(4), cross the vertical line AA2 that some A makes OB; The length of getting BE is a, and the angle of line segment AB and line segment OB is δ.

3, the fiber winding method of flat roller yarn discharging according to claim 1 is characterized in that the definite step in the step 4 is:

(1), according to step 2, draw the yaw plane of rotation and an A that doffs;

(2), cross the A point to yaw plane of rotation upright projection, intersection point is the A1 point;

(3), get the projection BB1 of core mandrel on the yaw plane of rotation; This straight line is exactly the trajectory at plain-barreled roll center;

(5), cross the vertical line that A1 point is made straight line BB1, and connection A1B1, demonstrate,prove AB1 perpendicular to BB1; Wherein, the length of line segment A1B1 is doff point height s2;

(6), determine line segment AB, wherein the B point is the intersection point of straight line AB and straight line BB1 according to the size of winding angle α; The length of line segment BB1 is to twine overlength s1;

(7), connect A1 and B 2 points, line segment A1B, and cross the B point and in the yaw plane of rotation, do vertical line perpendicular to straight line A1B, i.e. plain-barreled roll position among the figure;

(8), cross the vertical line that the B point is made straight line BB1, the angle of plain-barreled roll and this straight line is β, is the pivot angle of wrapping machine A coordinate.

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