JPS6116741B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a glass fiber spinning take-up device that provides a strand tension cutting method for improving the auxiliary winding condition at the start of spinning winding and ensuring the winding of the strand in the winding collet. The present invention relates to a spinning take-up device in which the device is installed.

Long glass fibers are usually produced by spinning a large number of filaments from a bushing equipped with many nozzles, adding a sizing agent to the filaments, and then converging them into one or more filaments to form a strand, which is rotated several thousand times per minute. By winding at a constant speed of 1,500 to 5,000 m/min, several hundred to several thousand glass filaments with a constant diameter of 3 to 20 μm are collected by applying a predetermined draft to the circumferential surface of the winding collet. It is manufactured by fixed-quantity winding of strands.

Therefore, the strands at the initial and final stages of winding, where winding is performed at a speed lower than a predetermined speed, become large-diameter filaments due to low-speed drafting and must be eliminated as waist strands, and various measures have been taken for this purpose. There is.

The present inventors have a separate invention (Patent Application No. 122148/1982)
proposed the provision of the above-mentioned thread guiding rod and lower tension roller in order to guide and pass the strand at the initial stage of spinning between the front surface of the free end of the winding collet and the opposing surface of the auxiliary winding frame. Although we succeeded in eliminating the waist strand at the initial stage of spinning and making the collection winding of the strand stable and reliable, the present invention is a further improvement on this. By providing a cutting mechanism to cut the strand into chopped strands of appropriate length, the amount of winding of the strand transferred below the auxiliary winding frame is minimized when the winding operation of the auxiliary winding frame is performed, and the auxiliary winding is facilitated. This stabilizes the state of the waist strands, thus making it possible to wind the strands around the take-up collet smoothly.The waist strands that have been pulled and transferred are made into short fibers, making subsequent processing easier. This is the result.

If cutting is not carried out at the same time as pulling the waist strand as described above, during auxiliary winding, the previously ejected continuous waist strand passes through the rotating tensioning mechanism in the opposite direction and is rewound to reduce the amount of auxiliary winding. The present invention completely solves these problems, which not only increase the winding but also lead to a tangled winding of the leading waist strand, resulting in an extremely unstable auxiliary winding condition.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are a front view and a side view showing the main parts of a glass fiber spinning and winding device equipped with a strand tension cutting device of the present invention, in which the glass fiber strands that are bundled at the start of spinning are shown. This shows the state in which the front surface of the free end of the winding collet is being transferred to the lower tensile cutting device through the protruding thread guide rod and between the auxiliary winding device opposite thereto.
A large number of glass fiber filaments 2 spun from the upper spinning bushing 1 are passed through a sizing agent applying roller 3.
A sizing agent is applied in contact with the strand S, and the strand S is formed into one strand S by the sizing roller 4.
It is held between a guide roller 20 and a press roller 21 of a lower tensile cutting device in contact with a protruding thread guide rod 11 fixed to the tip of a support rod 12 operated by a pressure cylinder 13 provided at the top of the The cutting blade 25 of the cutter roller 22, which is in pressure contact with the lower surface of the guide roller 20 and is driven and rotated, is cut at the circumferential surface of the guide roller 20 to form a chopped strand S' in the discharge groove 40.
fallen inside.

In the above state, the auxiliary take-up sash frame 7 shown in FIG. The auxiliary winding of the strand S begins around the outer circumference of the book peg 8, and together with the strand S from above, a short length of the preceding strand whose tip is on the tension cutting device is also wound, the winding speed is increased, and during this time When the speed reaches a speed suitable for the constant speed rotation of the collet 6, which has started its rotation, the tip 8' of the peg 8 gently overlaps the peripheral surface of the free end of the collet 6, as shown by the dotted line, and the protruding guide is removed. The thread rod 11 is rapidly retracted to the inoperative position 11' by the action of the pressurizing cylinder 13, and the strand S is engaged with the rotating wire traverse device 10 and wound onto the collet 6 while being traversed. It performs rapid constant rotation while reciprocating in the range W in the axial direction to form a winding layer as shown by the dotted line.

The auxiliary winding skein frame 7 stops when the strand winding of the collet 6 starts, and the strand S is pulled and cut between the collet 6 and the auxiliary winding skein frame 7.
is retreated to the position shown in the second figure, and the waist strand wound around the peripheral surface of the peg 8 is moved toward the distal end of the peg 8 by an appropriate means, removed, and dropped into the discharge groove 40 for removal.

T is a rotating stand that supports two collets 6 and 6' and moves each collet to the strand winding position, full bobbin removal, and empty bobbin insertion position zone by rotating 180 degrees, and is a continuous stand. The collets 6, 6' alternately and intermittently continue to wind up the strand S supplied by the strand S through the auxiliary winding of the auxiliary winding skein frame 7.

If the spun strand breaks due to variations in spinning conditions or other causes, the state immediately returns to the state shown in the second diagram.

FIG. 3 is a side cross section showing the main parts of the strand tensile cutting device, showing a state in which the strand S is being tensile cut, and shows a guide roller 20 having a large-diameter surface elastic material layer and When the press roller 21 pivotally supported on the tip of the swinging rod 23 supported by the pivot 24 is pressed,
The strand S is clamped at the nip point, one end is supported by the fixed shaft 29, and the output shaft end 31 of the pressure cylinder 30 is connected to the lower end of the swinging rod 23, so that the clamping pressure of the strand S is regulated according to the cylinder pressure. .

Reference numeral 22 is a cutter roller, and a plurality of cutting blades 25 extending in the axial direction on its circumferential surface are fixedly installed at equal intervals, and the tips of the cutting blades 25 are connected to the guide roller 2.
The motor 16
The rotational force of the cutter roller 22 is transmitted by a belt 17 to actively rotate the cutter roller 22, and the upper circumferential surface of the cutter roller 22 is located below the nip point between the guide roller 20 and the press roller 21. .

If the strand S breaks, the output shaft of the pressure cylinder 30 is slightly protruded, the press roller 21 is separated from the guide roller 20 surface,
After inserting the cut strand end into the gap, the pressure cylinder 30 is applied in a tensile direction to pinch the strand.

On the other hand, the cutter roller 22 is rotated in the direction of the arrow by the start of the motor 16, and in conjunction with this, the guide roller 20 and press roller 21 are also contacted and rotated in the direction of the arrow, and while the strand S is pulled downward, the cutting blade 25 is cut at the position where it is press-fitted into the circumferential surface of the guide roller 20, becomes a chopped strand S' and is released downward, and the strand S
The downward pulling of the auxiliary winding skein frame 7
The motor 16 continues to advance until the auxiliary winding of the strand S is performed, and when the winding of the auxiliary winding skein frame 7 is confirmed, the motor 16 is stopped and the uncut waist strand in the tension cutting device section is advanced. The section is stably unwound under tension onto the auxiliary winding skein 7, and the tension-cutting device is inactive until the spinning strand undergoes a further break.

In the above embodiments, a preferred embodiment has been described in which a guide roller and a press roller that rotates in contact with the guide roller are used as the rotational tensioning mechanism, and a cutter roller that is rotationally driven in contact with the guide roller is used as the cutting mechanism. The mechanism may be of a gear mesh type to perform cutting at the same time, or the tension may be of a pin roller combination type and a separate cutting device may be provided.

In the above embodiment, each roller is arranged in such a positional relationship that the upper surface of the cutter roller, which is in pressure contact with the guide roller, faces vertically below the nip point between the guide roller and the press roller as a rotating tension mechanism. Therefore, even if the waist strand is pulled away from the guide roller surface, the strand is always captured by the cutter roller surface and transferred to the guide roller surface.
This produces an effect that allows for good cutting.

As described above, the present invention involves pulling and cutting the glass fiber waist strand at the beginning of spinning downward through the space between the free end front surface of the winding collet and the auxiliary winding device opposite thereto.
When the auxiliary take-up skein frame rotates to take up the winding, the leading waist strand can be unwound to the minimum amount while maintaining the strand tension necessary for stable winding, and therefore the required power is minimal, and The auxiliary winding condition is maintained well, and the winding of the strand around the collet can be performed smoothly, which greatly contributes to the automation of glass fiber spinning and winding devices.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic front view, FIG. 2 is a side view of the same, and FIG. 3 is an enlarged front view of main parts. DESCRIPTION OF SYMBOLS 1...Spinning bushing, 2...Glass fiber filament, 3...Styling agent applying roller, 4...Focusing roller, 5...Winding machine, 6...Collection, 7
...Auxiliary winding skein frame, 8...Petsug, 10...Wire traverse device, 11...Guiding rod, 20...
... Guide roller, 21 ... Press roller, 2
2... Cutter roller, 25... Cutting blade, S...
...Strand, T...Rotating stand.

Claims (1)

[Claims] 1. A glass fiber strand spun from an upper spinning bushing and just before winding is made to pass between the front surface of the free end of the winding individual collection and an auxiliary winding device opposite thereto. , a glass fiber spinning winding device is provided with a rotating tensioning mechanism below the rotating tensioning mechanism, and a cutting mechanism is provided below the rotating tensioning mechanism so that the strand pulled out downward from the rotating tensioning mechanism becomes a chopped strand. A glass fiber spinning winding device equipped with a strand rotating tension cutting device. 2. The rotating tensioning mechanism consists of a guide roller having an elastic surface layer and a press roller that comes into contact with and separating from the guide roller, and the cutting mechanism is a rotationally driven cutter having a number of blades fixed on the circumferential surface that is pressed against the lower surface of the guide roller. A glass fiber spinning and winding device equipped with a strand tension cutting device according to claim 1, wherein the guide roller is rotated in contact with the cutter roller and the press roller is rotated in contact with the guide roller.