JPS6259548A - Collet for continuous winding apparatus of glass fiber strand - Google Patents

Abstract

PURPOSE:To efficiently carry out the automatic winding and doffing operation, by providing a guide surface and blade of specific shape in a waste strand winding part at the tip part of each winding collet in a continuous winding apparatus using alternately two winding collets. CONSTITUTION:Two winding collets 8 and 8' are provided on a turret 7 and alternately used to carry out continuous winding of a glass fiber strand 5. In the process, a circumferential groove 15 for winding a waste strand is formed on the peripheral surface of a waste strand winding part 9 at the tip part of each winding collet 8 to give a truncated conical strand guide surface 16 in which the sidewall on the side of the collet 8 is tilted to the bottom surface 7. The guide surface 16 is cut into the sidewall at a part near the bottom surface 17 in the axial direction of the collet 8 to form an annular recessed part 18. Thereby, a blade 19 forming an acute angle between the tip part of the guide surface 16 and the recessed part 18 all over the circumference. As a result, the cutting and delivering of the strand 5 in changing the collet 8 are surely carried out.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention involves applying a sizing agent to a large number of filaments spun from a bushing, converging them into one or several strands, and then winding them through a traversing device. A winding device for glass fiber smealand for winding onto a tube to directly form a package, in particular a rotatably supported turret with two winding collets mounted diametrically opposite each other, one of which is When the winding tube is full when the strand is wound by placing ~ at the winding position,
The turret is rotated 180 degrees and the other collet fitted with an empty winding tube is brought to the winding position, and the strand is transferred from the full winding tube to the empty winding tube during the winding operation. The present invention relates to a winding device that continuously performs the following steps.

``Prior Art'' The continuous winding device for glass m-fiber has a waste 1-strand winding section at the tip of each winding collet, and when the winding tube is replaced, the strand is removed from the full winding tube. The winding collet into which the empty winding tube is fitted is transferred to the waste strand winding section of Corella 1-, and then transferred to the land winding section of the winding collet into which an empty winding tube is fitted. The part is thus configured such that the strands passed through the waist strand winding parts of both collets are automatically separated from the full collet under the tension that naturally increases as both collets rotate. In this continuous winding device, it is important that the strand is automatically cut and that the waste strand winding section on the empty winding tube side securely grips the tip of the strand after cutting. Various improvements have been made to the handle.

For example, the winding collet disclosed in Japanese Patent Application Laid-Open No. 52-5309 has a truncated conical strand guide surface formed at the waist strand winding portion at the tip, and a strand guide surface in the vicinity of the small diameter side end of the guide surface. A fixed member such as a bottle, a hook, or a guide plate is provided to protrude from the collet, and the strand transferred to the waste j/strand winding part of the collet into which an empty winding tube is fitted forms a truncated conical shape under the action of winding tension. The land moves to the small diameter side on the guide surface of S1, and just before reaching the end, it gets caught on the fixed member, and as a result of the increase in tension generated as both winding collets continue to rotate, the land moves to the fixed member. It is configured to be cut as a corner.

Further, the winding collet disclosed in JP-A-57-175665 has a frusto-conical strand guide surface formed at the waist strand winding portion, and an annular strand protruding in the radial direction at the small-diameter end of the guide surface. A strand stop wall is provided, and the surface of the stop wall is removed in at least one place radially inward from the guide surface to form a crescent-shaped flat part, and opposite to the flat part, the end of the guide surface is removed. Several parallel grooves are formed in the crescent-shaped wall surface formed on the side of the guide surface in a direction perpendicular to the diameter of the guide surface.
As in the case of No. 2-5309, the strand moves on the truncated conical guide surface toward the small diameter side, falls into one of the parallel grooves, is gripped by the groove, rotates with the collet, and increases as the collet rotates. It is cut at the corner of the groove due to the tension exerted on it.

"Problems to be Solved by the Invention" The device of JP-A-52-5309@ mentioned above has the disadvantage that the fixing member often fails to capture the strand because the strand is captured and cut at one point. The fixing member has the disadvantage that it is easily worn out because it is intensively subjected to repeated friction from the strands.

The device disclosed in JP-A-57-175665 is JP-A-52-175665.
This is an improved version of No. 5309 that eliminates the above-mentioned drawbacks, but there is no sizing agent residue or filament in the gap between the opposing crescent-shaped flat parts and the grooves! - There is a problem in that the equipment tends to accumulate and the equipment must be stopped from time to time to clean it.

Furthermore, in all of the above conventional devices, it is important to adjust the relationship between the circumferential speeds of the full collet and the empty collet so that an appropriate tension is applied to the strand between the two collets. If the circumferential speed of the empty collet is smaller than or equal to the circumferential speed of the collet on the full tube side, the winding of the strand may not occur at the winding section of the empty collet, or the strand may be completely cut off before winding. strands often fail to transfer to the empty collet side.

Furthermore, since the above-mentioned conventional device cuts the strand in such a way that it tears the strand, fluff of the filament is generated during cutting, and this fluff can cause the filament being spun to be cut from the bushing, or the winding machine There were problems such as fluff accumulating around the machine and deteriorating the working environment.

``Means for Solving the Problems'' In order to solve the problems of the conventional device described above, the present invention provides the following features of the circumferential groove formed on the circumferential surface of the waist strand winding section at the tip of the winding collet. The side wall of the circumferential groove is formed into a frusto-conical strand guide surface inclined toward the bottom surface of the circumferential groove, and the guide surface is cut in the axial direction of the cholera i- in a portion close to the bottom surface of the circumferential groove. A recess is formed, and a blade is formed with an acute angle formed over the entire circumference between the tip of the guide surface and the recess.

``Operation'' In the present invention, when an empty collet is brought to the winding position, the strand taken up by this collet comes into contact with the bottom of the circumferential groove of the waist strand winding portion, and then When the collet exits toward the full collet, it comes into contact with a blade formed at the tip of the guide surface and is cut. This cutting is done almost instantaneously because the blade rotates at high speed, but each filament is cut little by little with a master's time lag.
Since the filament is wound around the bottom of the circumferential groove, there is a sufficient winding angle until the last filament is cut. In this way, the wrapping of the land around the strip 1 can be accomplished in a short time because the wrapping progresses at the same time as the cutting is being performed.

``Example'' FIGS. 3 and 4 show the lath 11 to which the present invention is applied.
Figure 1 shows a pattern in which the glass filament 1- spun from the bushing by the continuous winding device of the fiber 1 land is directly formed on the land package. ! ! This is the essential diagram. A large number of glass filaments 1-2 spun from a bushing 1 pass through a sizing agent applicator 3 and a sizing roller 4 and are converged into a single strand 5, which is then wound onto a take-up tube 6 while being traversed by a traversing device (not shown). taken and formed into a package.

The winding tube 6 is fitted into a winding tube 1-8 which is mounted on a rotatably supported tower 1-7 and driven to rotate. Another winding collet 8' is mounted at a symmetrical position,
When the winding tube 6 becomes full, the turret 7 rotates 180 degrees in the direction of arrow a, and the collet 8 with the empty winding tube 6' fitted therein is rotated 180 degrees in the direction of arrow a.
' to the winding position. At the tip of each winding collet, a strand guide rod 10 moves forward to transfer the strand 5 to a rag 1 - strand winding part 9 when the winding pipe is full.
It is designed to move to .

As shown in FIGS. 1 and 2, the waist strand winding section 9 is composed of a ring member 11 made of aluminum, and has seven flanges 12 that integrally protrude inward in the radial direction at the end on the collet side. bolts 14 in holes 13
is inserted and fixed to the end face of the collet 8. Ring member 1
Reference numeral 1 is attached to the end surface of the collet 8, and a circumferential groove 15 having an inverted trapezoidal cross section and opposite side walls having a truncated cone shape is formed on the outer circumferential surface of the collet 8. The side wall 16 on the collet 8 side serves as a strand guide surface that guides the strand transferred from the take-up tube 71 fitted into the cholera 1-8 to the bottom surface 17 of the circumferential groove 15 by the strand guide rod 1o. 16 is cut in the axial direction before reaching the bottom surface 17 of the circumferential groove to form an annular recess 18, and a blade 19 forming an acute angle over the entire circumference is formed between the tip of the guide surface 16 and the darkness of the recess 18. It is formed. In this embodiment, the ring member 11 is made of aluminum in order to reduce the weight, but for the reason described below, a part of the guide surface 16 at two locations facing each other on the diameter line is made of hardened stainless steel blade. It is formed by a member 20. Each blade member 20 is inserted from the outside into a corresponding hole formed in the strand guide surface 16 and fixed by two set screws 21. The opening [J at the center of the flange 12 is covered with a cap cover 22 and fixed with screws 23.

The waist strand winding section 9 of the present invention is constructed as described above and operates as follows. As shown in FIG. 5a, the winding collet 8 at the winding position of the turret 1-71 rotates in the direction of the arrow A, and the glass fiber strand 5 is wound on the surface of the winding tube 6 fitted onto the turret 1-71. When the strand is completely removed, the strand guide rod 10 moves forward to transfer the strand 5 from the winding@6 to the waist strand winding section 9 (see FIG. 4).

Next, the winding collet 1 fitted with an empty winding tube is rotated 8' in the direction of arrow C, and at the same time, the turret 7 is rotated 180 degrees in the direction of arrow a, and the positions of both collets are changed as shown in Fig. 5b. urge The take-up collet 8 is rotated at a reduced speed at this point. In this way, the strand 5 to be wound on the waist strand winding section 9 of the winding collet 8 is wound up via the waist strand winding section of the winding collet 8' brought to the winding position. The strand 5 passing through the waist strand winding part of the winding collet 8' contacts the strand guide surface 16 of the waist strand winding part 9 of the winding collet 8', and is affected by the winding tension received from the full tube collet 8. , move to the small diameter side along the guide surface 16 and change the circumference y1.
15 (see Figure 1). The strand 5 comes into contact with the bottom surface 17 of the circumferential groove 15 over an angle, and then leaves the bottom surface 17 and, as it moves toward the full collet 8, comes into contact with the blade 19 at the tip of the guide surface and is cut. This cutting appears to be done almost instantaneously because the blade 19 is rotating at high speed, but the individual filaments are cut little by little with a slight time lag, and from the cut filament to the bottom of the circumferential groove. As the filament continues to wrap, enough winding will give a corner by the time the last filament is cut.

In the present invention, the blade 19 is formed over the entire circumference.
Since cutting is performed on the land, there is less wear compared to conventional cutting methods that cut at one location. However, if the diameter of the collet is small, the ring member 11 can be made of stainless steel and hardened to achieve a sufficient effect. If this is the case, the material of the blade portion 19 will wear out relatively quickly, making it impossible to cut smoothly.In the above-described embodiment, as a countermeasure against this, a part of the strand guide surface 16 facing on the diameter line is made hard. Wear of the blade portion 19 made of the blade member 20 made of material can be avoided, and as a result, troubles due to inability to cut can be avoided.

Although the embodiment described above has two winding collets on the towers 1 to 7, it will be clear that the invention is equally applicable to those having three or more collets.

"Effects of the Invention" In the present invention, the points of contact and friction for cutting the strand are not concentrated at one point but are distributed over the entire circumference, which reduces wear and allows the cut strand to be wound around the waist strand winding section. In addition, frequent cleaning of the waste strand winding section as in the conventional method is no longer necessary, and the reliability of automatic winding replacement work can be increased.

Further, according to the present invention, as shown in FIG. 5b, the time taken from the time the waist strand winding part of the empty winding cholera 1-8' comes into contact with the strand until the cutting and winding is completed is about 1.
The cutting time is within seconds, and since the strands are cut using a sharp blade, unlike the conventional method of tearing, there is less R-shaped fluff, which greatly improves the working environment.

Furthermore, for conventional 2,000-hole, 4,000-hole, etc. direct winding rovings using porous bushings, etc., for thick S1-lands, an auxiliary winding roller is used in addition to the winding collet to wind up the waste cloth 1-S1-land. However, according to the present invention, the entire circumference blade formed on the guide surface of the West Strand 1-land winding section can reliably cut even thick strands, so an auxiliary winding can be used. No take-up roller is required.

Further, although the conventional collet requires a device for adjusting the speed difference between both collets, the present invention does not require such an adjusting device.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of one embodiment of the waist strand winding part of the winding collet of the present invention, and FIG. 2 is a front view of the same, with a part of the front cut away and taken along the line The internal structure is shown below. Figure 3 shows glass fibers 1 to 1 to which the present invention is applied.
A front view showing In forming a strand package by a continuous land winding device, FIG. 4 is a side view of the same, and FIGS. 5a and 5b are outlines explaining aspects of strand transfer according to the present invention. In the figure, Figure 5a shows a state in which the collet in the winding position is full before the start of the transition, and Figure 5b shows the state in which the empty collet 1- is in the winding position and starts the transition. . 5... Strand, 6,6'... Winding tube, 7...
Turret, 8.8'... Winding collet, 9... West strand winding part, 15... Circumferential groove, 16... Strand guide surface, 17
...Bottom surface of circumferential groove, 18...Annular recess, 19...
·blade

Claims (1)

[Claims] In a continuous winding device for glass fiber strands, in which at least two winding collets are mounted on a rotatably supported turret, waist strand winding is performed on the circumferential surface of the waist strand winding portion at the tip of each winding collet. A circumferential groove is provided for the circumferential groove, and the collet-side side wall of the circumferential groove is a frusto-conical strand guide surface that is inclined toward the bottom surface of the circumferential groove, and a portion that is close to the bottom surface of the circumferential groove. The glass fiber strand is characterized in that the guide surface is cut in the axial direction of the collet to form an annular recess, and a blade forming an acute angle over the entire circumference is formed between the tip of the guide surface and the recess. Continuous winding device.