JPH0241188Y2 - - Google Patents

Description

[Detailed explanation of the idea]

<Industrial Field of Application> The present invention relates to an apparatus that performs heating drawing or heat treatment to improve the strength of yarn or twisted cord, or to provide thermal dimensional stability. <Prior Art> Conventionally, a device for drawing or heat treating a plurality of yarns generally includes a supply roller 1, as shown in FIG.
1' and the take-up rollers 2, 2', a heating bath 3 is provided between the supply rollers 1, 1' and the take-up rollers 2, 2'.
A predetermined drawing or heat treatment is carried out depending on the circumferential speed difference between 2' and then the plurality of yarns are passed through a yarn separation guide 4 to be divided into yarns one by one, and the yarn guidance is regulated to separate each yarn. A method of winding on individual wallenders has been used. <Problems to be solved by the invention> In the conventional apparatus as described above, when a yarn breakage occurs in the heating bath, the broken yarn end A rebounds onto the supply roller 1', wraps around the roller 1', and becomes adjacent to the yarn end A. In order to break the running yarn Y together, the roller surface may be processed to increase the slip, or a fourth
As shown in the figure, improvements have been made such as installing a slit-shaped nozzle 5 that sucks the yarn end A. However, when the other yarn end B is also broken, it greatly expands or swells and deforms due to shrinkage force and static electricity, making it easy to get entangled with the adjacent running yarns. There was little impact on adjacent weights and they were left unattended. In recent years, in order to improve productivity, the number of yarns per roller has been increased and the distance between running yarns has become narrower. Induced yarn breakage of adjacent running yarns due to catching on the dividing guide 3 has occurred, which has come to be seen as a problem. The present invention has been made in order to eliminate the adverse effect of the swollen yarn end B on the adjacent running yarn. In the present invention, as a result of analyzing the movement of the swollen yarn end B, the length of the swollen portion C varies somewhat depending on the yarn breakage state, but the total length is 20 to 30 cm, and it is found that the yarn end B is in a tension state from the running yarn end. It was discovered that the yarn is released from the thread guide (yarn running path), and that if it is caught and cut and removed, the influence on the adjacent running yarn can be completely eliminated. I've reached it. <Means for solving the problem> That is, the present invention stretches or heat-treats a plurality of yarns running in parallel between a supply roller and a take-off roller using a heating means, and then provides the yarn on the exit side of the take-off roller. In a device that separates and regulates a plurality of yarns using a yarn separating guide, a cutter for removing a swollen portion of a broken yarn end is installed between the heating means and the yarn separating guide in the vicinity of the yarn guide. , the cutter has a slit-shaped suction port arranged to cross the yarn running direction, and a cutting blade provided in the longitudinal direction so as to block the entrance position on the front end side of the suction port, which is on the take-up roller side. This is a yarn processing device characterized by: <Example> Hereinafter, the present invention will be explained based on the drawings. FIG. 1 is an explanatory layout diagram showing an embodiment of the present invention. In the figure, reference numeral 11 denotes a heating bath for drawing or heat-treating the threads Y running in parallel, and supply rollers 12, 12' and take-up rollers 13, 13' are provided at the front and rear positions of the heating bath 11, respectively. It is being A comb-shaped yarn separating guide 14 is arranged on the exit side of the take-up roller, and separates and regulates the thread guide of a plurality of yarns Y running in parallel after passing through the take-up rollers 13 and 13', and separates and controls the threads for the next winding. Guide to the machine. A suction device 15 having a slit-shaped suction port 16 for cutting and suctioning the yarn end when the yarn is broken is disposed between the supply rollers 12, 12' and the heating bath 11 at a position close to the inlet of the heating bath 11. There is.
Reference numeral 17 denotes a take-off roller 1 between the heating bath 11 located upstream of the yarn separating guide 14 and take-off rollers 13 and 13'.
As shown in FIG. 2, a cutting blade 18 is provided in a slit-shaped suction port 19 connected to a suction device 20 in a direction perpendicular to the yarn guiding direction. There is. The cutting blade 18 is the suction port 1
It is attached to the upper surface of 9 or at a protruding position so as to close the front end side which is the outlet of the running yarn Y, and its blade surface 18' is provided so as to be slightly inclined in the direction opposite to the yarn guiding direction, but the present invention is not limited to this. It's not something you can do. Although the cutter 17 is preferably located just before the take-up roller 13, it may be located at any position between the heating bath 11 and the thread separation guide 14. Furthermore, suction devices such as aspirators may be arranged side by side in a staggered manner, and cutting blades may be provided within or between these aspirators. In a device having such a configuration, a plurality of threads Y running in parallel are fed by supply rollers 12, 12'.
After being heated in a heating bath 11 and subjected to stretching or heat treatment, the yarn is passed through take-up rollers 13, 13', the yarn is divided and regulated by a yarn separating guide 14, and sent to a winding machine (not shown). It is wound up. Now, when one yarn Y breaks inside the heating bath 11, the yarn end is divided into two, A and B, and one yarn end A rebounds to the supply roller 12 side and rolls back to the supply roller. However, since a suction device 15 is provided on the inlet side of the heating bath 11, it is sucked into the suction device 15 and is prevented from wrapping around the roller 12. On the other hand, the other yarn end B contracts at the time of yarn breakage and also causes dislocation due to static electricity between the single yarns (single fibers), so it has an expanded or swollen portion C within a range of 20 to 30 cm. The yarn end B having this swollen portion C is released from the tension and separates from the other running yarn Y, causing slack, but at the moment when this slack occurs, the suction force of the suction port 19 of the cutter 15 acts on it. Inhale. In this case, as shown in FIG. 2, since the cutting blade 18 is provided on the running yarn outlet side of the suction port 19,
When the yarn Y' is sucked into the suction port 19 as shown by the dotted line, the suction force causes it to come into contact with the blade surface 18' of the cutting blade at point D, including the swollen part C of the yarn end B, e.g. 100cm is cut, and the remaining (cut) yarn end is sharply cut in a relaxed state, so it hardly swells, so it will not get entangled with other adjacent yarns or be pulled by the yarn separation guide 14. The thread passes smoothly through the thread separation guide 14 without causing breakage of adjacent threads due to snagging. In this case, the number of yarn breaks and the rate of breakage of both adjacent spindles when processing polyethylene terephthalate yarn 1000 de/250 fil at 200 m/min with a running yarn pitch of 5 mm and a parallel running yarn number of 30 per roller Table 1 shows a comparison with the equipment.

[Table] Here, Adjacent co-breakage rate: (Number of yarn breaks induced by yarn end B of adjacent running yarns) x 100/Number of yarn breaks in the heating bath Note that the above explanation is for the horizontal type, but is limited to this. Needless to say, the present invention can be similarly applied to, for example, a vertical type. <Effects of the present invention> As explained above, according to the present invention, the swollen portion of the yarn end at the yarn separation guide portion, which frequently occurs when the running yarn pitch (interval) is narrowed as in the conventional process, can be reduced. Induced yarn breakage of adjacent running yarns due to tangles or snags is almost eliminated, and even when the running yarn pitches are closely spaced to 10 mm or less, it is possible to almost eliminate the influence of broken yarn ends. The effect is extremely large.

[Brief explanation of the drawing]

Fig. 1 is a schematic layout explanatory diagram showing an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the cutter shown in Fig. 1,
FIG. 3 is an explanatory diagram of a layout showing a conventional embodiment, and FIG. 4 is an explanatory diagram of occurrence of induced yarn breakage in adjacent running yarns. 11... Heating bath, 12, 12'... Supply roller,
13, 13'... Take-up roller, 14... Thread separation guide, 15... Suction device, 17... Cutting device, 18...
... Suction port, 19... Cutting blade.

Claims (1)

[Scope of utility model registration request] A plurality of threads running in parallel between a supply roller and a take-off roller are stretched or heat-treated through a heating means, and the plural threads are separated and regulated by a thread separating guide provided on the exit side of the take-off roller. In a device that
A cutter for removing the swollen part of the broken yarn end is installed near the yarn guide between the heating means and the yarn separating guide, and the cutter is arranged in a slit shape so as to cross the yarn running direction. A yarn processing device comprising: a suction port; and a cutting blade provided in the longitudinal direction so as to close an entrance position on the front end side of the suction port on the take-up roller side.