JPH0630871Y2 - Unwinding assisting device of two-stage feeding type double twisting machine - Google Patents

Description

[Detailed Description of Device] a. Purpose of the Invention [Industrial field of application] This invention twists the yarns from the two upper and lower yarn feed packages while unwinding them by passing them through a hollow spindle holding each yarn feed package. The present invention relates to a two-stage yarn feeding type double twisting machine for applying a yarn.

[Prior Art] In a conventional two-stage yarn feeding type double twisting machine, an annular guide body that is supported so as to be able to rotate in a soft manner is provided between two yarn feeding packages arranged in upper and lower stages. It is known to guide a yarn to be unwound from (for example, see Japanese Utility Model Laid-Open No. 1-65874).

[Problems to be solved by the device]

In the conventional two-stage yarn feeding type double twisting machine, as the amount of yarn in the package decreases, that is, as the diameter of the package becomes smaller, the yarn drawn from the lower yarn feeding package comes into contact with the guide body. Then, the bending angle becomes smaller gradually. Along with this, there is a problem that the tension of the yarn increases and the yarn breaks.

In addition, there is a problem that the guide body and the upper yarn supplying package come into contact with each other to cause unwinding failure.

An object of the present invention is to provide an unwinding assisting device for a two-stage double-twisting type double twisting machine, which keeps an angle at which a yarn drawn from a lower yarn supplying package comes into contact with a guide body and bends at a substantially constant value. There is.

Another object of the present invention is to provide an unwinding assisting device including a guide body that prevents the yarn unwound from the lower yarn feeding package from interfering with the upper yarn feeding package when being guided by the top guide.

B. Configuration of the Invention [Means for Solving the Problems] In order to achieve the above object, in the unwinding assisting device of the two-stage yarn feeding type double twisting machine of the present invention, the upper and lower yarn feeding packages 1 and 2 are In the middle, a plurality of linear parts are radially attached to the annular base in a diagonally upward direction to support a guide body 6 having a flexible restoring force. As the unwinding of the yarn supplying package progresses. The restoring force of the guide body 6 is restored.

[Action]

In the unwinding assisting device of the two-stage yarn feeding type double twisting machine configured as described above, when the diameter of the upper yarn feeding package 1 is reduced and the weight thereof is reduced, the spring is extended and the upper yarn feeding package holder 4 Lift up. When the upper yarn feeding package holder 4 is lifted, the action point 9 on the flange portion is also raised,
A restoring force acts on the flexible linear member of the guide body 6 to diagonally move the flexible linear member upward, and the tip end portion thereof shrinks in the direction of arrow A. Then, the radius formed by the tip of the flexible linear member of the guide body 6 is reduced, and the angle at which the yarn drawn from the lower yarn supplying package 2 contacts and bends the guide body 6 is kept substantially constant. .

Further, the lower yarn is unwound without the guide body 6 and the upper yarn supplying package 1 coming into contact with each other.

〔Example〕

Referring to the drawings, FIG. 1 is a view showing an example of an unwinding assisting device of a two-stage yarn feeding type double twisting machine according to the present invention. , A hollow spindle for supporting the lower yarn feeding package 2. A lower yarn feeding package 2, a base 7, an upper yarn feeding package holder 4, and an upper yarn feeding package 1 are fitted into the hollow spindle 3 in this order from the bottom. A hollow top guide 8 is inserted at the upper end of the hollow spindle 3.

A spring 5 is interposed between the base 7 and the upper yarn supplying package holder 4 so that the upper yarn supplying package holder 4 can be moved up and down according to the amount of yarn of the upper yarn supplying package 1. A guide body 6 is sandwiched between these two members.

The guide body 6 is a flexible body in which a plurality of linear members are radially attached to an annular base portion in an obliquely upward direction.

The yarn unwound from the lower yarn feeding package 2 blows off the tip of the flexible linear member of the guide body 6 to form a balloon.

A downward-facing flange 9 is formed in the peripheral portion of the upper yarn supplying package holder 4, and this is because the upper yarn supplying package holder 4 is extended by the extension of the spring 5 as the yarn amount of the upper yarn supplying package 1 decreases. Becomes an action point that supports the flexible linear member of the guide body 6 when the pressure rises.

The base 7 has a structure in which the central portion thereof supports the annular base portion of the guide body 6 so as not to move vertically, and the peripheral portion thereof cooperates with the above-mentioned action point 9 of the upper yarn feeding package holder 4 to guide the guide body. The flexible linear member 6 has a structure capable of being clamped near the base.

C. Effect of the Invention Since the invention is configured as described above,
The following effects are achieved.

That is, the yarn unwound from the lower yarn feeding package 2 does not interfere with the upper yarn feeding package 1, and the angle at which the yarn pulled out from the lower yarn feeding package 2 contacts the guide body 6 and bends The unwinding tension is stable because the unwinding tension is almost constant during the course of the unwinding.

Therefore, not only yarn breakage and unwinding failure do not occur, but also a twisted yarn in a stable twisted state can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an unwinding assisting device of a two-stage feeding type double twisting machine of the present invention. 1 ... Top yarn feeding package, 2 ... Bottom yarn feeding package, 4
…… Top yarn feeding package holder, 5 …… Spring, 6
…… Guide body, 7 …… Base, 9 …… Flange

Claims (1)

[Scope of utility model registration request] 1. A guide body 6 having a flexible restoring force, which is provided in the middle of upper and lower yarn feeding packages 1 and 2 and has a plurality of linear portions radially attached obliquely upward to an annular base portion. An unwinding assisting device for a two-stage yarn feeding type double twisting machine, which recovers the restoring force of the guide body 6 as the unwinding of the yarn feeding package progresses.