JPS6211882Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Nelson roller device which is particularly effective for taking up yarn traveling at high speed.

In recent years, direct spinning devices such as direct spinning and drawing devices and highly oriented undrawn yarn take-off devices have become popular, and Nelson rollers, which use a combination of two or more rollers, are sometimes used as take-off rollers and drawing rollers in these devices. many. In particular, when taking off or drawing at high speeds, Nelson rollers are often used to stabilize the running of the yarn in order to prevent the yarn from slipping on the roller surface.

Recently, in order to further increase productivity, in addition to higher speeds, there has been a demand for higher thread count. However, from the standpoint of equipment compactness, operational safety, and manufacturing costs, it is preferable for the axial length of each roller of the Nelson roller to be short, so when increasing the number of threads, the pitch between the threads must be set small. It is often done.

In this way, when multiple yarns are wound around a Nelson roller with a short axial length and operated at high speed, the pitch between the yarns is small, so the swinging of each yarn causes adjacent yarns on the roller to It becomes easy to interfere, thread breakage,
Problems such as the occurrence of fuzz, single yarn movement, and yarn wrapping around the rollers are more likely to occur.

The inventors of the present invention have developed a Nelson roller device that can operate stably without substantially causing the above-mentioned troubles, even when using a Nelson roller with a short axial length, or even when operating at higher speeds or with a higher number of threads. As a result of intensive studies, we have found that the swing of the yarn is caused by the airflow generated as each roller of the Nelson roller rotates at high speed (hereinafter referred to as accompanying airflow) and the flow between the rollers of the Nelson roller. It was discovered that the main cause was collisions with the running yarn.

Therefore, in order to achieve the above purpose, this invention
A Nelson roller device composed of a plurality of rollers 5, 5', which is surrounded by a yarn path Y' between the rollers of the yarn when the yarn is wound around the plurality of rollers, and the plurality of rollers. In the space, blocking members 10A to 10D are provided for blocking the collision between the airflow and the yarn due to the rotation of the plurality of rollers, and the airflow blocking plate surface 11 of the blocking member is connected to the yarn path between the rollers. It is characterized in that it is substantially parallel and its end 11' is located close to said roller.

Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a front view of a direct spinning and drawing apparatus in which a Nelson roller device according to an embodiment of the present invention is applied as a drawing roller, and FIG. 2 is a cross-sectional view of the same apparatus taken along the - arrow in FIG. 1. Figures 3, 5 and 6 are front views of Nelson roller devices according to other embodiments of the present invention. FIG. 4 is a sectional view taken along the - arrow in FIG. 3.

In FIG. 1, a cooling cylinder 2 is spun from a spinneret 1
The yarn Y (4 yarns) that has been cooled and solidified is applied with an oil agent through an oiling roller 3, and is taken up by a pair of godet rollers 4, 4', and then passed through a pair of heated drawing rollers 5, 5'. It is wound several times around, stretched and heat treated, and wound up as packages 6, 6'. Here, a Nelson roller device according to the present invention is used as the heated stretching rollers 5, 5'.

In FIG. 2, 7 is heated stretching roller 5, 5'
7' is a lid that can be opened and closed. 8 is a motor for driving a roller, and 9 is a winding bobbin drive device.

Now, in the space surrounded by the heated drawing rollers 5 and 5' and the inter-roller yarn path Y' of the yarn wound around the rollers, there is a blocking member for blocking the collision between the accompanying airflow and the yarn. 10C is the airflow blocking plate surface 11
is parallel to the roller thread path Y′, and its end 1
1' is provided so as to be located close to the roller.

Here, assuming that the heating stretching rollers 5 and 5' are rotating in the direction of the arrow in FIG. Each of the accompanying air currents directly collides with the yarn Y' running between the rollers, causing each yarn to swing vertically and horizontally. Furthermore, the accompanying air currents also collide with each other, creating turbulence and causing each thread to further sway.

However, as shown in FIGS. 1 to 6, the blocking member 1 is located in the space surrounded by the rollers 5, 5' and the inter-roller yarn path Y' of the yarn wound around the rollers 5, 5'.
When 0A to 10D are provided so that their airflow blocking plate surfaces 11 are located parallel to the yarn path and their ends 11' are located close to the rollers, the The accompanying air currents due to the rotation do not directly collide with the inter-roller threads Y', and are also prevented from colliding with each other. Therefore, the factors that disturb the running of the yarn are suppressed, and the swinging of the yarn is significantly reduced, so no matter how high the speed or the number of yarns, there is no problem with threading, fuzzing, single yarn movement, and rollers. Trouble such as yarn wrapping hardly occurs, and operations can be stabilized and productivity can be improved.

As this blocking member, members having shapes as shown in FIGS. 3 to 6 can also be used.

As shown in Fig. 3 and Fig. 5, when a plurality of blocking members are provided close to both thread paths Y' (=the upper thread path and the lower thread path in those figures), Since the energy of the accompanying air currents generated by the rollers 5 and 5' is absorbed in the space between the blocking members 10A and 10B, the wound yarn is hardly swayed.

In the embodiment shown in FIG. 6, the two blocking members 10A and 10B used in the embodiment of FIG. In the case of member 10D,
In this case, a small amount of accompanying airflow due to the rotation of both rollers remains very close to the circumferential surfaces of both rollers, but it is not large enough to cause the yarn to swing.

As shown in FIGS. 1 to 6, in order to block the collision between the accompanying airflow and the yarn Y', the blocking members 10A to 10D have an airflow blocking plate surface 11, and the airflow blocking plate It is necessary that the surface 11 is provided parallel to the thread path Y' and that its end 11' is located close to the roller.

In order to prevent collision between the accompanying airflow and the yarn,
It is better if the end 11' of the airflow blocking plate surface 11 is as close as possible to the rollers 5, 5', but if it is too close, it will interfere with the rotation of the rollers 5, 5'.

Furthermore, in order to further increase the blocking effect, the blocking members 10A to 10D are made longer than the axial length of the rollers 5 and 5', as shown in FIG. It is preferable to provide the air flow blocking plate surface 11 in close proximity to the yarn path Y' as shown in FIGS. 3 to 6.

In addition, in order to remove the wrapped yarn when the yarn is wrapped around the roller 5 or 5' due to threading failure, etc., each of the blocking members 10A to 10A is used as shown in FIG. A support shaft C is provided in the center of 10C,
be able to rotate around its support axis C;
Alternatively, it is preferable to make it detachable.

FIGS. 1 and 2 show an example in which the Nelson roller device according to the present invention is applied as a drawing roller of a direct spinning and drawing device.
The Nelson roller device of the present invention can generally be used with other devices using Nelson rollers. Further, the present invention can be applied not only to the case of two rollers but also to a Nelson roller of three or more rollers.

As explained above, in the space surrounded by the plurality of rollers 5, 5' forming the Nelson rollers and the inter-roller yarn path Y' of the yarn when the yarn is wound around the plurality of rollers, A blocking member 1 for blocking the collision between the airflow and the yarn due to the rotation of the plurality of rollers.
0A to 10D are provided, and the airflow blocking plate surface 11 of the blocking member is substantially parallel to the thread path between the rollers, and the end portion 11' thereof is located close to the roller. As a result, it is possible to prevent the yarn wound between each roller of the Nelson roller from swinging, making it possible to increase the speed and stably operate a take-up device or drawing device with a large number of yarns. Make it.

[Brief explanation of the drawing]

FIG. 1 is a front view of a direct spinning/drawing apparatus to which a Nelson roller device according to an embodiment of the present invention is applied, and FIG. 2 is a sectional view taken along the - arrow in FIG. 1. 3, 5, and 6 are front views of a Nelson roller device showing other embodiments of the present invention, and FIG. 4 is a sectional view taken along the - arrow in FIG. 3. Explanation of symbols, 10A, 10B, 10C, 10D
...Blocking member, 11...Airflow blocking plate surface, 1
1'... End of the airflow blocking plate surface, 5, 5'... Each roller in the Nelson roller, Y'... Yarn running between the rollers, and its yarn path.

Claims (1)

[Scope of utility model registration request] A Nelson roller device composed of a plurality of rollers 5, 5', which is surrounded by a yarn path Y' between the rollers of the yarn when the yarn is wound around the plurality of rollers, and the plurality of rollers. In the space, blocking members 10A to 10D are provided for blocking the collision between the airflow and the yarn due to the rotation of the plurality of rollers, and the airflow blocking plate surface 11 of the blocking member is connected to the yarn path between the rollers. Nelson roller arrangement which is substantially parallel and whose end 11' is located close to said roller.