JPH0372549B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is produced by converging a large number of fibers spun simultaneously in pushing into one or more fibers and winding them while traversing the fibers. Concerning strand cake and its manufacturing method.

[Conventional technology]

Conventionally, the collet and the twilling fixture are continuously moved relative to each other in the direction of the rotation axis of the collet using a stroke obtained by subtracting the traversal amplitude of the twilling fixture from the strand winding width, and the strand is spread over the entire winding width of the collet. Strand cakes were manufactured by winding them evenly while twilling them.

[Problem that the invention seeks to solve]

However, when using the conventional strand cake, when the strand is unwound to one side in the direction of the winding axis, the strand is unwound while reciprocating from one end of the cake width to the other end. As the thread moves away from the feeding opening, the unwinding resistance also increases, which not only worsens the unwinding performance but also may lead to thread breakage. In particular, the strands tend to get caught at the base of the strand cake, making unwinding even worse.

The first object of the present invention is to provide a strand cake with excellent unwinding properties when the strand is unwound in the direction of the winding axis, and the second object is to provide a strand cake with excellent unwinding properties. The object of the present invention is to provide a method that can easily produce a strand cake having the following properties.

[Means for solving problems]

The characteristic structure of the strand cake according to the first invention is that the winding width of the strand winding part per round is smaller than the cake width, and each strand winding part is made smaller than the cake width. The following one is displaced to one side in the direction of the winding axis and is arranged in an overlapping state. The effects and effects thereof are as follows.

[Effect]

The winding width of the strand winding part per round is smaller than the cake width, and each strand winding part is displaced to one side in the winding axis direction and overlaps as the strand winding part is wound later. When unwinding the strand in the direction of the winding axis, when unwinding from the outer periphery side, the strand is unwound from the end of the last wound strand at one end in the winding axis direction, and when unwinding from the core side, the strand is unwound from the winding axis. By unwinding the strand from the end of the first wound strand at the other end in the core direction, the strand can be reciprocated with a winding width smaller than the cake width without having to reciprocate across the cake width. The unwinding resistance can be greatly reduced.

〔Effect of the invention〕

Therefore, the present invention has been able to provide a strand cake that has excellent unwinding properties and allows strands to be unwound without causing thread breakage.

[Means for solving problems]

The method for manufacturing a strand cake according to the second invention is characterized in that the traversing tool for traversing the strands with a width smaller than the cake width and the collet,
The point is that traverse winding is performed while relatively moving in one direction along the rotation axis of the collet. The effects and effects thereof are as follows.

[Effect]

By moving the twill attachment and the collet relative to each other in one direction along the rotation axis of the collet while operating the twill attachment, the strand that was wound first of each strand winding section is On the other hand, in order to wind the strand so that the following one is displaced to one side in the direction of the winding axis and overlaps, the strand is wound using a collet and a twilling device in the same manner as in the conventional method described above. However, it is easy to control the relative movement between the collet and the twill attachment.

〔Effect of the invention〕

Therefore, the present invention has been able to provide a method for easily producing a strand cake with excellent unraveling properties.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figures 2 and 3 show a winder for manufacturing strand cake A, and 1 in the figures shows a pair of rails 1a in a posture along the strand winding axis direction,
1a is a base frame, and 2 is a movable frame equipped with four movement guide members 2a that are slidably fitted onto the rails 1a, 1a of the base frame 1; base frame 1
A hydraulic cylinder 3 for traversing the movable frame 2 in the direction of the winding axis is installed between the two.

The movable frame 2 includes a substantially cylindrical rotating frame 4 that is rotatable around an axis parallel to the winding axis, and a motor (not shown) for driving and rotating the rotating frame 4.
Also, the rotary frame 4 is moved to the movable frame 2 at a predetermined phase.
A clamp cylinder 5 is provided for fixing to.

The rotating frame 4 is provided with two collets 6, 6 which are independently rotatable around an axis parallel to the winding axis, and motors 7, 7 which drive and rotate these collets 6, 6 separately. It is being

Reference numeral 8 denotes a support that is erected from the base frame 1 through the vicinity of the rotation path of the collet, and on the upper part of this support 6 there is provided a support for supplying the collet 6 or 6 located at a specific position on the rotation path of the rotation frame 4. A twill attachment device 9 that imparts a traverse amplitude l smaller than the winding width to a strand to be wound by rotation around an axis parallel to the winding axis at a certain position, and this twill attachment device 9
A motor 10 for driving and rotating the is provided.

The twill attachment 9 is composed of a shaft 9a connected to a motor 10 and a spiral 9b fixed to the shaft 9a.

Reference numeral 11 denotes a core tube for winding, such as a plastic tube, which is fitted onto the collet 6.

The collet is positioned at a specific position on the rotational path of the rotary frame 4 through the cooperation of the driving rotation of the twill attachment 9 at a certain position and the traverse of the collet 6 in the direction of the winding axis by the movable frame 2. The strand is wound on the collet 6 while being traversed. At this time, the strand is wound while being traversed continuously in one direction.

In this way, when a predetermined amount of strand has been wound over the entire winding width of the collet 6, the positions of the two collets 6, 6 are alternately exchanged.
When the rotating frame 4 is driven and rotated in the direction of the arrow, a new collet 6 enters between the spinneret and the collet 6 on which the strand is being wound, rotating at the winding speed, contacts the traveling strand, and moves along its traveling path. Press and bend. Then, the strand is torn off and wound around a new collect 6 located close to it, and winding is started. On the other hand, the collet 6, which has already been wound with yarn, is stopped, and the strand wound thereon is removed as a cake A.

Strand cake A produced in this way
As shown in FIG. 1, the winding width la of the strand winding portion a per round is smaller than the cake width L at the traverse amplitude l by the traverse fitting 9, and each strand winding portion a is the one that was wound earlier (a ₁ ,
a ₂ …a _o-1 ) followed by (a ₂ , a ₃ …
a _o ) are arranged so as to be displaced to one side in the direction of the winding axis and overlap.

Therefore, when the strand A' is paid out from the strand cake A in the direction of the winding axis, when it is paid out from the outer circumference, as shown in FIG.
When the last wound strand A' is unwound from the end A ₁ and is unwound from the shaft core, the first wound strand A' is unwound from the end A ₂ as shown in FIG.
By unwinding the strand with a winding width la
Unraveling is done by moving A' back and forth.

[Another example]

Another example of the present invention will be shown below.

In the above-mentioned embodiment, the collet 6 is moved in a traverse manner when the collet 6 and the twill attachment 9 are moved relative to each other, but the arrangement may be such that the twill attachment 9 is moved in a traverse manner.

In the above-mentioned embodiment, the twill amplitude l by the twill attachment tool 9 and the winding width la of the strand winding part a were made equal, but by relatively moving the twill attachment tool 9 and the collet 6,
The winding width la of the strand winding portion a may be made smaller or larger than the twill amplitude l of the twill attachment 9.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a schematic structural diagram of the main part of the strand cake, Figs. 2 and 3 are perspective views and front views of the winder, and Figs. 4 and 5 show the unwinding state. FIG. a... Strand winding part, la... Winding width, L...
...Cake width, A'...Strand, 6...Collection, A...Strand cake, 9...Twill attachment.

Claims (1)

[Claims] 1. Winding width la of strand winding portion a per round
is configured to be smaller than the cake width L, and each strand winding part a is arranged so that the one that follows the one wound first is displaced to one side in the winding axis direction and overlaps. Strand cake arranged. 2 Collect 6 while traversing strand A'.
A method for manufacturing a strand cake A by winding the strand A' into a strand, in which the traversing tool 9 for traversing the strand A' with a width l smaller than the cake width L and the collet 6 are connected to the rotation axis of the collet 6. A method for producing a strand cake that involves winding in a twilling manner while relatively moving in one direction along the core.