JPS5846430B2 - How to move the strand at the end of glass fiber winding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a winding method in which a large number of glass filaments spun from a glass melting furnace are divided and focused into a plurality of strands and wound as a plurality of square end packages on a single spindle. , relates to a strand moving method that can reliably move the strand wound on each package to the front waist winding section at the tip of the spindle at the end of winding.

Currently, in the production of glass fibers, the nozzle holes provided at the bottom of the bushing used to draw out the molten glass as filaments are becoming porous, with dozens of holes.

The filament spun from such a multi-hole nozzle is
It is divided and bundled into multiple strands according to the purpose and wound up into multiple packages.

In this case, in order to simplify the equipment, a plurality of strands are wound onto a single spindle of a winding device to form a plurality of packages.

Typical package shapes are double taper packages and square end packages.

When forming multiple packages on a single spindle, when the package is full and you want to switch to another spindle, all the strands are moved to the front waist winding section at the tip of the spindle, and then , the strand is transferred to a strand transfer drum close to the front waist winding section and wound there, during which time the spindle is switched to another one, and after the switching is completed, the strand is transferred to the front waist winding section of the new spindle, and then An operation is performed to return it to a predetermined position on the spindle.

This operation allows the spindle to be switched without stopping the strand.

By the way, as shown in Figure 1, a large number of filaments are
Strand 6 is divided and focused with 8-1 and 8-2
-1.6-2, and connect this to the spindle 1 of the winder 14.
When winding the double taper package 18-1. Strand 6-1.6-
2 can be moved to the front waist winding section 16-2.

That is, since both ends of the packages 18-1 and 18-2 are tapered, the strand 6-1 wound around one package 18-1 moves as the guide 20 moves.
The tapered part of the package 18-1, 18-2 can be moved smoothly.

However, when square-end packages are formed on a single spindle, deep grooves are formed between adjacent packages, and simply moving the strands laterally above the spindle will not work. You fall into this ditch and can't cross the package.

For this reason, conventionally it was not possible to move the strand to the front waist winding section at the tip of the spindle, and when changing the spindle, the winding of the strand was temporarily stopped, and after switching the spindle, the strand was removed from the glass melting furnace. The strands that were being spun were aligned and manually wound around the front waist winding section of a new spindle.

Such an operation is not only troublesome but also takes a long time, resulting in a significant drop in operating efficiency.

The present invention has been made to eliminate such drawbacks,
To provide a strand moving method capable of moving each strand to a front waist winding part at the tip of the spindle when the package is full in a winding method for forming a plurality of square end packages on a single spindle.

As a result of careful consideration of the movement of strands between adjacent square end packages, the inventor of the present invention found that if the movement speed of the guide is very fast, the strands can cross the groove between the packages and move onto the adjacent package. I discovered something.

As a result of further detailed study, we found that in order for the strand to pass between packages, not only the speed of the guide but also the running position of the guide, the width of the groove between packages, the outer diameter of the package, the winding speed, etc. are important factors. The present invention was developed by confirming that

In the present invention, the moving speed of the guide for moving the strand is V, > V l (18,7D-0°8L+4.3D-0
-4) However, v, moving speed of the guide ■; winding speed l; inter-package groove width L; distance D between the package top contact of the strand and the guide; It is characterized by being able to cross over onto adjacent packages without falling into the grooves.

Examples of the present invention will be described in detail below.

Figures 2 and 3 show a large number of filaments spun from the bushing 12 of the glass melting furnace into four shoes 8-1.8.
-2.8-3.8-4 with 4 strands 6-1.6-
2.6-3.6-4, and wound on one spindle 3 of turret type winder 1 as four square end packages 1O-Ll 0-2.10-3.10-4. A glass fiber manufacturing device is shown.

Before explaining the strand moving method according to the present invention, the operation at the start of winding in the illustrated glass fiber manufacturing apparatus will be explained.

The glass fiber filament spun from the nozzle hole provided at the bottom of the bushing 12 is cooled by the spray 13,
A coating agent is applied by the coating device 11 to form strands, and the shoes 8-1, 8-2, and 8-3 are coated.

The strands are guided to 8-4, divided into strands 6-1 to 6-4, and concentrated.

Guide 1 stopping those strands in position d
to guide the front waist winding section 3-2 of the spindle 3.
Wrap it around.

At this time, the traversing device 5 is located away from the spindle winding section 3-1.

When the strand reaches a constant diameter by winding the strand at a predetermined speed in the front waist winding section, the guide 7 is moved from the d position to the a position.

Then, the strands divided and focused by the shoe 8-L8-2.8-3.8-4 are separated and moved to each position on the spindle winding section 3-1 according to each position of the shoe.

At this time, while operating the traversing device 5, the spindle is brought close to the winding section 3-1.

Then, each strand 6-1 to 6-4 is connected to the traversing device 5.
are inserted into the grooves of the respective traversing guides 5-11 to 5-14, and the strands 6-1 to 6-4 are gripped by the grooves to perform traversing at each part on the spindle winding section 3-1,
Packages 10-1 to 10-4 are formed, respectively.

That is, the strand 6-1 passing through the shoe 8-1 forms a package 10-1 with the traverse guide 5-11, and each strand forms a package with its corresponding shoe and guide.

In this way, a plurality of packages can be wound onto the spindle winding section 3-1.

When the traverse device is moved to follow the growth of the package, a square end package is formed.

Next, we will explain how to switch spindles when these packages are full.

When the traverse device is moved away from the package, each strand becomes free to come off the traverse guide, and the strand moves to a position regulated by the shoe on the package and stops traversing.

At this time, the guide 7 is moved from position a to position d across the traveling path of each strand, and each strand is moved between the square end package wound on the spindle winding section 3-1 and each package. The yarn is finally moved to the front waist winding section 3-2 of the spindle 3 while being doubled over the groove.

This movement of the strands will be described later.

Once all the strands have moved to the front waist winding section 3-2 of the spindle 3 and are wound there,
Furthermore, the guide 7 is moved to the d' position.

By this point, the strand transfer drum 9 has been brought to the tip of the spindle 3 so as to slide and rotate coaxially with the spindle 3, as shown in FIG. Moving.

In this way, the strand group is finally transferred to the strand transfer drum 9, and the turret 2 is rotated to replace the full spindle 3 with a new spindle 4, and the new spindle 4 is placed at a predetermined winding position.

When this work is completed, the guide 7 is returned from the d' position to the original position a, and the strands that had been wound on the strand transfer drum 9 are transferred onto the spindle 4 and are again moved to the same winding device as described above. Upon operation, a plurality of square-end packages can be formed on the spindle 4, allowing continuous winding of a plurality of square-end packages.

In the above process, strand 6-1.6-2.6-
3 to the front waist winding section, each strand needs to cross the deep groove between each package.

If the strand falls into this groove and is unable to cross the groove, it will only result in damage to the edges of the package and breakage of the strand.

The present invention makes it possible to move the strand between the square end packages, and the conditions for the strand to cross the groove between the packages will be explained below with reference to FIGS. 4 and 5.

Figures 4 and 5 show the movement of the strand when the guide 7 moves the strand between two packages.To simplify the explanation, the guide 7 is initially stationary at position D. , the strands are one package 10
-1 is assumed to be wound around the end.

Strand 6-1b guided by guide 7 at position b
is in contact with the package 10-1 at point e.

When the guide I moves from position b to position C, the package 10-1 rotates by an angle θ, the point e on the package moves to the point f, and the strand is in the state shown by 6-1c.

The strand designated 6-1c contacts the edge of adjacent package 10-2 at point g.

When the guide 7 further moves beyond the C position and the package rotates, the strand that was in contact with the edge of the package 10-2 at the point g will move to the package 10-2 if there is no slippage between it and the edge. 2 will be wound up.

As a result of extensive studies, the inventor has found that if certain conditions such as the traveling speed of the guide 7, the distance between the guide 7 and the package winding point e, and the outer diameter of the package are satisfied, the distance between the strand and the package edge is It was confirmed that the strand was wrapped around the package with almost no slippage.

This condition will be explained with reference to FIG. FIG. 6 shows the state when the guide 7 has moved to position C, together with a developed view of the package surface.

In the same figure, as described above, ■; Winding speed ■5; Transition speed of the strand on the package ■2; Guide speed l; Inter-package groove width D; Package outer diameter L; Distance between the guide and the package winding point Now, in order for the strand 6-1C to not slip at point g, it is necessary that the distance between ef and the angle θ (see FIG. 5) be small.

The maximum distance between ef to prevent slippage at point g is a function of the package winding diameter, so if this is KDD (where n is a constant), on the other hand, the relationship between Vs and Vg is As is clear from Figure 6, the relationship is as follows: Substituting equation (4) into equation (2), in equation (5), K and n are constants. This was obtained from the results of a mobile test.

Substituting these values into equation (5), we find that if the strand is moved under conditions that satisfy equation (6), the strand will not fall into the groove between the packages and will be able to successfully cross between the packages. I can do it.

As is clear from equation (6), when the winding diameter is large, or when V, l, and L are small, (2) becomes small, and therefore the strand can easily pass between packages.

For smooth movement of multiple square-end package strands on a single take-up drum, use
6) In addition to the conditions shown in formula, generally the package width is 12
It is preferable that the winding bobbin outer diameter is larger than 0 mm, the outer diameter of the winding bobbin is larger than 100 mm, the package outer diameter is smaller than 350 mm, and the distance between the strand winding drum contact point and the guide at the start of winding is smaller than 250 mm. was confirmed from the experimental results.

The results of tests on the success rate of strand movement are shown above for 4-package and 2-package single windings when the distance between the strand package contact point and the guide 7 was varied.

In the present invention, by moving the guide at an appropriate speed as described above, the strand can be brought into contact with the edge and surface of the adjacent package without falling into the groove, and the strand can be moved by the frictional force and the rotation of the spindle. This is a method in which the square-end package is immediately moved to the surface of the next package, and this repetition enables continuous winding of multiple square-end packages on a single spindle.

As a result, as shown in the table below, compared to the conventional method of stopping the winding drum when the winding drum is full, it has become possible to achieve higher operating efficiency and higher productivity, which is equivalent to the operating efficiency of a double taper package. .

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the method of moving strands in a double taper package, Figure 2 is a schematic diagram of a glass fiber manufacturing facility that winds glass fibers into a square end package, and Figure 3 is a diagram similar to Figure 2. A schematic front view showing the winding part of the device, FIG. 4 is a front view of the package to explain the state of movement of the strand between packages, FIG. 5 is a side view of FIG. 4, and FIG. 6 is the same as FIG. 4. FIG. 2 is an explanatory diagram showing an enlarged main part of the package and an expanded version of the package. 1... Winding device, 3, 4... Spindle, 61, 6-2, 6-3, 6-4... Strand, I... Guide, 10-1, 10
-2, 10-3. 10-4...Package.

Claims (1)

[Scope of Claims] 1. In a winding method in which a large number of filaments spun from a glass melting furnace are divided into a plurality of strands and concentrated, and wound as a plurality of square end packages on a single spindle, the winding ends. Sometimes, a guide is run from the distal end of the spindle to the distal end of the spindle across the running path of all the strands wound on the spindle, and each strand is sequentially moved while interlacing the threads, and the moving speed of the guide at this time is , V, > V l (18,7D-0°8L+ 4.
3 D'J") However, ■2; Moving speed of the guide ■; Winding speed l; Inter-package groove width D; Package outer diameter L; A method for moving a strand at the end of glass fiber winding, characterized in that the strand crosses over adjacent packages without falling into the groove between the packages.