JPS606043Y2 - Anti-twill roller - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a twill fall prevention roller used in a fiber (yarn) winding machine.

Conventionally, fiber winding has been carried out using a winding machine 4 having a rotatable roller bail 3 arranged to clamp a thread 2 together with a thread winding bobbin 1, as shown in FIG. 1, for example. As the bobbin 1 rotates, the thread 2 is guided by the traverse guide 5 and is sequentially wound around the bobbin 1.

By the way, since the roller bail 3 of the conventional winding machine 4 is generally made of metal and has a relatively smooth outer surface, the thread 2 is not easily wound when winding the thread on the end side of the bobbin 1. Therefore, in the winding machine 4 using the conventional roller veil 3, the twill drop 7 often occurs.

To deal with this, for example, simply forming irregularities on the outer circumferential surface of the roller veil 3 will cause wear and damage to the thread during winding, or may cause uncut threads, resulting in a decrease in the quality of the thread and a reduction in winding work time. Simply forming an uneven surface on the waist roller veil 3 is not a very preferable countermeasure, as this may lead to an increase in the amount of water.

The present invention was devised in view of the above points, and its purpose is to substantially eliminate twill drop without causing wear, damage, or breakage to the yarn during yarn winding, and to be preferably applied to this type of winding machine. The purpose of the present invention is to provide a roller for preventing tread drop.

According to the present invention, the above object is distantly related to the tread drop prevention roller, which is formed by covering the outer periphery with an elastic material to form a coating layer, and providing grooves extending in the axial direction on the outer circumferential surface of the coating layer. Ru.

Next, the present invention will be explained based on preferred embodiments shown in the drawings.

In FIGS. 2 and 3, the twill drop prevention roller 21 is
It consists of a central roller body 22 made of metal and a coating layer 23 that covers the outer periphery of the body 22, and the layer 23 is made of an elastic material such as rubber.

A large number of grooves 25 extending along the axis 24 direction of the roller 21 are formed in the outer peripheral surface of the layer 23 in the circumferential direction.
Each protrusion 26 between each groove 25 contacts the thread 2 to be wound.

The layer 23 may be formed, for example, by integrally attaching an elastic material to the outer periphery of the main body 22, or by inserting the main body 22 into a cylindrical member made of rubber and allowing the cylindrical member to The covering layer 23 may be formed by covering the outer periphery.

In addition, the width d of the groove, the width of the protrusion, and the height H of the protrusion are each in the order of 0.5 < d < 2 rtrm.

It is selected from the range of 0.5mm<H<2mm, 1mm<D<3mm.

Such a roller 21 pinches the thread 2 wound on the bobbin 1 together with the bobbin 1, and when the bobbin 1 rotates, the thread 2
is set at a predetermined position on the outer periphery of the bobbin 1.

In this way, the protrusions 26 of the roller 21 intermittently press the thread 2 against the outer periphery of the bobbin 1 or against the thread 6 wound around the outer periphery of the bobbin 1 with a relatively large force. For example, when the thread 2 is not wound at the position 27 on the one end side of the bobbin 1, it is possible to prevent the thread 2 from slipping to the one end surface side of the wound thread 6.

That is, when the grooves 25 are provided, the contact area of the roller 21 with the yarns 2 and 6 becomes smaller, and the pressing force against the yarns 2 and 6 becomes stronger, compared to when no grooves are provided.
The grip of the yarns 2 and 6 by the rollers 21 at the contact area can be made stronger, and twill drop can be more reliably prevented.

Furthermore, since the layer 23 is made of an elastic material, it is possible to substantially prevent thread wear, damage, or breakage of the thread, and further to prevent unnecessary lateral movement of the thread 2.

Incidentally, in the specific example described above, the recesses 25 were formed all along the axis 24 direction of the coating layer 23, but for example, as shown in FIG. may be formed.

As described above, according to the present invention, it is possible to eliminate twill-fall without reducing the quality of the yarn, and in addition, it is possible to perform high-speed winding work even on synthetic fiber monofilament that is slippery and prone to twill-fall. It is possible to reliably shorten the winding operation time for various yarns.

In addition, in the twill fall prevention roller of the present invention, since the outer periphery is coated with an elastic material to form a coating layer, the elastic material deforms into a shape that follows the shape of the thread being fed when the thread is wound. This allows the thread to be gripped reliably, keeping the width of lateral deviation small, and winding the thread while arranging it in the desired position, thereby preventing the thread from falling off, and also ensuring a comfortable grip on the thread. By doing so, it is possible to prevent damage or breakage of the thread.

In addition, in the twill fall prevention roller of the present invention, grooves extending in the axial direction are provided on the outer circumferential surface of the covering layer formed of an elastic material, so that contact with the threads is reduced compared to a covering layer without grooves. Since the area can be reduced, the above-mentioned thread can be gripped more reliably, the range of sideways deviation of the thread to be wound can be further narrowed, and twill-fall of the thread can be further prevented.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional winding machine using rollers, FIG. 2 is a plan view of a winding machine using rollers according to a preferred embodiment of the present invention, and FIG. 3 is a winding machine shown in FIG. A side view of the removal machine, FIG. 4, is an explanatory diagram of another specific example. 21...Tara, 22...Main body, 23.
...Covering layer, 25...Recess.

Claims (1)

[Scope of utility model registration request] A twill drop prevention roller whose outer periphery is covered with an elastic material to form a coating layer, and a groove extending in the axial direction is provided on the outer circumferential surface of the coating layer.