JPH0860456A - Method for twisting fancy yarn and apparatus therefor - Google Patents

Abstract

PURPOSE: To provide a process and apparatus for the twisting of a fancy yarn effective for suppressing the end breakage of a winding yarn and the abrasion of a guiding accessory even by increasing the rotational speed of a spindle, thereby enabling the remarkable increase of the rotational speed of a spindle to improve the productivity of the yarn. CONSTITUTION: A bobbin 4 wound with a winding yarn 12 is attached to a rotatably supported hollow spindle 2 having an inner hole 3 for passing a pare yarn 11 on the axis. The spindle 2 is rotated at a prescribed speed in the winding direction of the winding yarn, the core yarn 11 is passed through the inner hole 3 of the spindle and taken out from the tip end of the hole at a prescribed speed and the winding yarn 12 on the bobbin 4 is guided through a guiding accessory in the direction toward the tip end of the spindle under a prescribed tension and twisted around the core yarn 11. In the twisting process of a fancy yarn consisting of the above procedures, the guiding accessory is composed of circular guiding plates 7, 8 concentrically attached to the spindle 2 between the tip end of the spindle and the bobbin 4. The guide plate has an outer circumferential part having a smooth surface to guide the winding yarn 12 and an outer diameter larger than that of the collar plate 10 of the bobbin 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for twisting a decorative yarn for producing a decorative yarn such as a silver and silver yarn by twisting a wound yarn made of a flat foil yarn or the like on a core yarn.

[0002]

2. Description of the Related Art As a method of twisting a decorative thread, a bobbin wound with a wound thread is mounted on a hollow spindle which has an inner hole through which a core thread is passed and which is rotatably supported, and the spindle is wound. The core yarn is passed through the inner hole of the spindle and pulled out from the tip at the required speed in the winding direction of the yarn, and the winding yarn on the bobbin is guided in the spindle tip direction under the required tension through the guide assist tool. However, a method of twisting the core yarn while being widely used has been widely used.

Further, as an apparatus for carrying out the twisting method, there is provided a hollow spindle having an inner hole through which a core thread is passed and which is rotatably supported, and a winding thread on which the spindle is wound. The mounted bobbin, a rotation drive device that rotates the spindle in the winding-winding direction at a required speed, a guide aid that guides the winding yarn on the bobbin toward the spindle tip direction under the required tension, and the core yarn is twisted to it. What is usually used is a withdrawal device for withdrawing the wound yarn from the tip of the spindle integrally with the wound yarn.

The guide assisting tool in the twisting method and apparatus is rotatably mounted on the spindle between its tip and the bobbin, and the guide hole guides the wound yarn toward the tip of the spindle. Flyers are often used.

[0005]

However, in the conventional twisting method and device, the wound yarn is twisted on the core yarn through the guide hole of the flyer, and the flyer is attached to the spindle while interlocking with the rotation of the bobbin. Since it rotates with respect to the spindle, when the rotation speed of the spindle increases, thread breakage of the winding yarn, abrasion of the flyer, and the like are likely to occur, and the rotation speed of the spindle is, for example, 8000 in order to prevent such accidents.
There was a problem that the productivity was remarkably limited because it was suppressed to as low as about 10,000 rotations / minute.

Therefore, the problems to be solved by the present invention are as follows.
Even if the spindle rotation speed is increased, the yarn breakage and the wear of the guide aid are less likely to occur, and thus the spindle rotation speed can be remarkably increased to improve the productivity. And to provide a device.

[0007]

According to the method for twisting a decorative yarn according to the present invention, the wound yarn is wound on a hollow spindle which has an inner hole through which a core yarn passes and which is rotatably supported. Install the bobbin, rotate the spindle in the winding direction at the required speed, pass the core thread through the spindle inner hole and pull it out from the tip at the required speed, and also set the winding thread on the bobbin through the guide aid. In the twisting method of the decorative yarn, which is adapted to be twisted to the core yarn while being guided in the spindle tip direction under tension, the guide aid includes a smooth outer peripheral portion for guiding the winding yarn and a bobbin collar plate. It is characterized by a circular guide plate having a large outer diameter and concentrically mounted on the spindle between its tip and the bobbin.

Further, the apparatus for carrying out the twisting method comprises a hollow spindle having an inner hole through which a core thread is passed and which is rotatably supported, and a winding spindle on which the winding thread is wound. The mounted bobbin, a rotation drive device that rotates the spindle in the winding-winding direction at a required speed, a guide aid that guides the winding yarn on the bobbin toward the spindle tip direction under the required tension, and the core yarn is twisted to it. In a twisting device for a decorative yarn, which comprises a drawn-out device for pulling out at a required speed from the tip of the spindle integrally with the skeined wound yarn, the guide aid has a smooth outer peripheral portion for guiding the wound yarn and a collar of the bobbin. It is characterized by a circular guide plate having an outer diameter larger than that of the plate and concentrically mounted on the spindle between its tip and the bobbin.

In the above structure, a plurality, preferably 2 to
Four circular guide plates may be mounted in parallel on the spindle, and in that case, the outer diameter may be increased toward the tip of the spindle.

[0010]

The spindle is rotated at a required speed in the winding-winding direction by the rotation driving device, and the bobbin and the circular guide plate are also rotated integrally with the bobbin and the circular guide plate. The core yarn is drawn out from the tip through the inner hole of the spindle by a draw-out device, and the winding yarn on the rotating bobbin is twisted on the core yarn through a circular guide plate which is a guide aid.

In this case, the wound yarn on the bobbin is slidably contacted with the outer peripheral portion of the circular guide plate between the spindle tip and the bobbin, and is guided in the spindle tip direction while being regulated by the outer periphery of the circular guide plate to rotate. It receives an accompanying centrifugal force and air resistance, has an arcuate shape, and while being swung along the outer peripheral portion of the circular guide plate, is sequentially unwound from the bobbin under a required tension and twisted to the core yarn at the tip of the spindle. When the wound yarn is made of a flat foil yarn in particular, the flat foil yarn is guided while being regulated by the outer peripheral portion of the circular guide plate so that the front and back are not reversed when unwound from the bobbin.

The outer diameter of the circular guide plate and the material, thickness, cross-sectional shape and lubricity of the outer peripheral portion thereof are appropriately selected so that the above-mentioned action can be more efficiently performed under a predetermined twisting condition.

Further, in the case where a plurality of circular guide plates are mounted in parallel on the spindle, the wound yarn is smoothly guided while being regulated step by step on the outer peripheral portion of each circular guide plate. A more effective regulation force for preventing reversal can be obtained by using a flat foil yarn that does not like reversing the front and back. In this case, if the outer diameter of the spindle is closer to the tip side of the spindle within a range where the winding thread can be guided, the winding thread can be guided smoothly over a plurality of stages and the above-described action can be more effective. To be done. When a plurality of circular guide plates are used as described above, there may be a situation in which some of the circular guide plates do not participate in the winding yarn guidance depending on the twisting conditions.

[0014]

EXAMPLES The present invention will be described below based on examples.
FIG. 1 is a schematic side view of a decoration yarn twisting apparatus according to an embodiment of the present invention.

In FIG. 1, a hollow tapered spindle 2 is rotatably provided on a supporting base 1, an inner hole 3 through which a core thread 11 is passed is provided on the spindle 2, and the spindle 2 is further provided. The bobbin 4 around which the winding thread 12 made of a flat foil thread is wound is mounted in the middle part.

A drive belt 5 as a rotation drive device for rotating the spindle 2 is disposed under the spindle 2 so as to be able to come into contact with and separate from the spindle 2. Further, a core yarn 11 is pulled out together with the winding yarn 12 at a required speed on the extension of the tip of the spindle 2. A pull-out roller 6 as a pull-out device is disposed via a guide (not shown).

Further, between the tip of the spindle 2 and the bobbin 4, two circular guide plates 7 and 8 as guide aids are concentrically and horizontally mounted in parallel via a spacer 9. It Each of the circular guide plates 7 and 8 has an outer peripheral portion having a smooth surface and an outer diameter larger than that of the collar plate 10 of the bobbin 4, and is arranged such that the outer diameter increases toward the tip of the spindle 2. .

In the above construction, the spindle 2 is rotated by the drive belt 5 in the winding-winding direction at a required speed, and the bobbin 4 and the circular guide plates 7 and 8 are also rotated integrally therewith. The core yarn 11 passes through the inner hole 3 of the spindle 2 and is pulled out from its tip by a pulling roller 6 at a required speed. The winding thread 12 on the rotating bobbin 4 has a size of 2
The decorative yarn composed of the core yarn 11 and the winding yarn 12 which is twisted on the core yarn 11 through the circular guide plates 7 and 8 one by one and finally obtained is finally taken up by the winding shaft (illustration). Is omitted).

In that case, the winding thread 1 on the bobbin 4
Between the tip of the spindle 2 and the bobbin 4, 2 is guided in the tip direction of the spindle while being slidably contacted with the outer peripheral portions of the circular guide plates 7 and 8 and being regulated in two stages by the two so that the front and back are not reversed. The circular guide plate 7 has an arcuate shape due to the centrifugal force and air resistance associated with the rotation.
While being swung along the outer peripheral portion of the bobbin 8, the bobbin 4 is sequentially unwound under a required tension, and the core yarn 11
Twisted into.

[0020]

The method and apparatus for twisting a decorative yarn according to the present invention is configured as described above, and the circular guide plate as the guide assist tool is rotated integrally with the spindle, and the winding yarn of the circular guide plate is Since it is guided while being regulated by the outer peripheral portion of the smooth surface, even if the rotational speed of the spindle is increased to, for example, about 20,000 rpm, which is far higher than the conventional speed, there will be no breakage of the wound yarn or abrasion of the guide aid. Less likely to occur,
Therefore, the rotation speed of the spindle can be significantly increased to improve productivity.

Further, in the case where a plurality of circular guide plates are mounted on the spindle in parallel, the winding yarn is guided toward the tip of the spindle under more reliable regulation over a plurality of stages, which is smoother and preferable. A twisting process can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a decoration thread twisting device according to an embodiment of the present invention.

[Explanation of symbols]

 2 Spindle 3 Inner hole 4 Bobbin 7 Circular guide plate 8 Circular guide plate 10 Collar plate 11 Core thread 12 Winding thread

Claims (4)

[Claims] 1. A bobbin on which a winding thread is wound is mounted on a hollow spindle rotatably supported and having an inner hole through which a core thread is passed, and the spindle is rotated at a required speed in a winding-winding direction. Then, the core thread is passed through the inner hole of the spindle and pulled out from the tip at a required speed, and the winding thread on the bobbin is twisted to the core thread while guiding it in the spindle tip direction under the required tension through a guide assist tool. In the twisting method of the decorative thread, the guide aid has a smooth outer surface for guiding the winding thread and an outer diameter larger than the collar plate of the bobbin, and the space between the tip and the bobbin on the spindle. 2. A method for twisting a decorative thread, comprising a circular guide plate concentrically mounted in. 2. The method for twisting a decorative thread according to claim 1, wherein a plurality of circular guide plates are mounted in parallel on the spindle. 3. A hollow spindle which has an inner hole through which a core thread passes and which is rotatably supported, a bobbin on which the winding thread is wound and which is mounted on the spindle, and a winding direction for winding the spindle. Rotation drive device that rotates the bobbin on the bobbin under the required tension in the direction of the spindle tip, and the winding thread that twists the core thread to the spindle. In the twisting device of the decorative yarn, which comprises a drawing device for drawing the yarn, the guide aid has a smooth outer surface for guiding the winding yarn and an outer diameter larger than that of the collar plate of the bobbin, and the An ornament yarn twisting device comprising a circular guide plate that is concentrically mounted between a tip and a bobbin. 4. The decoration yarn twisting device according to claim 3, wherein a plurality of circular guide plates are mounted in parallel on the spindle.