JPH07309537A - Yarn winding paper tube - Google Patents

Abstract

PURPOSE:To easily cut a bunched yarn made of the synthetic fiber such as nylon and polyester by engraving a slit groove, which is inclined at an angle of inclination in a specified range, in the peripheral surface of a paper tube main body near the end thereof. CONSTITUTION:A slit groove 2 for bunching is engraved in the peripheral surface of a paper tube main body 1, which is formed by spirally winding a strip raw paper at multiple times and bonding at a part near one end thereof at a constant angle of inclination within a range of 4-8 degrees. This slit groove 2 is formed with a cut part 2b, which has a V-shape cross section and which can easily cut the bunched yarn and which is cut so that it is formed narrower as it comes downward from the bottom part of an opening part 2a. A bunched yarn made of the synthetic fiber such as nylon and polyester can be thereby easily cut for elimination, and the doffing of the yarn can be smoothly performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding paper tube having slit grooves for bunch winding before the step of main winding synthetic fiber threads such as nylon and polyester. .

[0002]

2. Description of the Related Art Conventionally, when a synthetic fiber yarn such as nylon and polyester is continuously supplied from a spinning process and automatically wound around a paper tube, a metal fitted to one end of the paper tube body. After the thread is gripped by the manufactured catch ring and the end of the paper tube body, the thread is wound around the paper tube body.

That is, a yarn is gripped between the inner surface of the collar portion of the catch ring and the end of the paper tube body, and then bunched with a slit groove formed in the outer peripheral surface near the end of the paper tube body. After this, the main winding of the paper tube main body is performed. After that, the bunch-wound yarn is cut and removed with a cutting blade, and the yarn end is held with an adhesive tape or the like.

[0004]

However, when the bunch-wound yarn is cut and removed, the conventional paper tube is
Since the slit groove for bunch winding is engraved on the outer peripheral surface of the paper tube end parallel to the end, the wound groove hides the slit groove, and when cutting with a cutting blade. In addition, since the slit groove is not visible, it is difficult to remove the bunch-wound yarn, it takes time, and workability deteriorates.
There was a problem that production efficiency could not increase.

The present invention has been researched and developed with the object of solving the above-mentioned problems, and can be used to easily cut a bunch-wound synthetic fiber yarn such as nylon and polyester. The purpose is to provide a paper tube.

[0006]

As means for solving the above problems and achieving the object, in the present invention, the outer peripheral surface near the end of the paper tube body is inclined at an inclination angle of 4 to 8 degrees. We have developed and adopted a yarn winding paper tube with slit grooves.

[0007]

[Function] Since the bunch-wound yarn is wound in the circumferential direction of the paper tube main body in parallel with the end of the paper tube, the slit groove having an inclination angle of 4 to 8 degrees is hidden by the bunch-wound yarn. In addition, the cutting blade easily enters the slit groove when the yarn is cut and removed, and the yarn can be easily cut.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a paper tube main body formed by winding a band-shaped base paper a number of times in a spiral shape and adhering the same. As shown in FIG. 1, a slit groove 2 for bunch winding is engraved on the outer peripheral surface in the vicinity of one end within a range of a constant inclination angle α = 4 to 8 degrees.

The slit groove 2 is, as shown in FIG.
The groove 2 is formed in a V-shape, and the upper surface of the groove 2 is formed as a wide opening 2a so that a cutting blade can be easily inserted, and the bunch-wound yarn can be easily cut.
A notch 2b is formed such that the notch 2b is narrower toward the bottom of the opening 2a.

If the inclination angle α of the slit groove 2 is too small, for example, if the inclination angle α is less than 4 degrees, the slit groove 2 is likely to be hidden by the yarn wound on the bunch, and when the yarn is removed. However, it is not suitable because it takes time to insert and cut a cutting blade using the slit groove 2.

Further, if the inclination angle α is increased to more than 8 degrees, the above-mentioned drawbacks can be eliminated, but when the slit groove 2 is engraved, the resistance of the cutting blade becomes large, which leads to breakage. Not suitable. Therefore, the slit groove 2
The inclination angle α is determined by the workability of removing the bunch-wound yarn and the easiness of slit groove processing, and as a result of experiments, it was confirmed that the above-mentioned 4 ° to 8 ° is optimal.

To explain the use mode of the present invention thus constructed, the yarn which is continuously supplied from the previous step while rotating the paper tube body 1 at the time of bobbin exchange and which passes through the peripheral surface of the paper tube body 1. If a thread is inserted between the collar portion 3a of the catch ring 3 and the end 1a of the paper tube body 1, the thread end is captured in the groove 4, and then the slit formed on the outer peripheral surface near one end of the paper tube body 1 After the bunch winding yarn A is held in the groove 2 and the bunch winding is performed, the main winding winding B on the paper tube body 1 is performed.

After the main winding and winding B is completed, the bunch-wound yarn A is cut and removed, and the yarn end is held by a tape or the like. At the time of the cutting and removal, the slit groove 2 is bunched. Since it is not hidden by the yarn A by winding, the cutting blade easily enters the slit groove 2 and the bunch wound yarn A can be easily cut.

[0014]

As described above, according to the yarn winding paper tube of the present invention, 4 to 8 are formed on the outer peripheral surface near the end of the paper tube main body.
Since the present invention relates to a yarn winding paper tube characterized by engraving slit grooves inclined at an inclination angle of 100 degrees, the bunch-wound yarn can be easily cut and removed, and thus the doffing of the yarn is performed. Can be processed smoothly, the workability is improved, the production efficiency can be improved, and the economic effect can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a yarn winding paper tube of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a vertical sectional side view showing a yarn winding state when the yarn winding paper tube of the present invention is used.

[Explanation of reference symbols] 1 paper tube body 2 slit groove

Claims (1)

[Claims] 1. The outer peripheral surface near the end of the paper tube body has 4 to 8
A yarn winding paper tube characterized by having slit grooves that are inclined at an inclination angle of 100 degrees.