JPH0117565Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a thread-wound paper tube used particularly for false twisting machines, and is concerned with a thread-wound paper tube that makes it possible to take up yarn supplied to high-speed knitting and looms. be.

In general, when taking up yarn from a thread-wrapped paper tube, when the winding yarn comes into contact with the vicinity of the end of the paper tube, resistance is felt by the yarn, and the knitting/loom in the next process is given a uniform tension and a state of convergence of the yarn. Therefore, when manufacturing thread-wound paper tubes, the long rough paper tube is cut to the required dimensions, and rounded (cornered) processing is performed to smooth the area near the end surface. However, if the next process requires thread removal at a higher speed, it is often still incomplete.

In order to eliminate this drawback, it is often practiced to bend the end face of the paper tube to reduce the resistance when threading.

Furthermore, when taking up yarn from a paper tube at a high speed, the inclination of the paper tube becomes a problem, and a method has been used to reduce the resistance to yarn taking-up by tilting the paper tube downward. For this purpose, the structure of the paper tube must be considered.

Therefore, in the present invention, the inner wall layer at both ends is removed to form a thin recess, the outer wall layer of the recess at one end is bent inward to form a bent part, and the recess at the other end is bent inward. A washer having an inner peripheral part protruding inward from the inner peripheral surface of the paper tube main body is fixed to the bottom surface, and even if the washer is hooked on a creel and the creel is in an inclined state, it will not slip off the creel on which the paper tube is suspended. To provide a spool-free paper tube.

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a paper tube main body, and the inner wall layer at both ends is removed by a predetermined thickness to form a thin recess 1a, 1 having a larger diameter than the inner circumferential surface.
b is formed. One of the recesses 1a has an outer wall layer bent inward to form a bent portion 1c. Reference numeral 2 denotes a washer made of paper, plastic, etc., whose outer diameter is approximately the same as the inner diameter _d2 of the recess 1b, and whose inner diameter is large enough to protrude inward from the inner circumferential surface of the paper tube main body 1. This washer 2 is press-fitted into the bottom of the recess by a protrusion attached to the outer circumferential surface, or is fixed by applying an adhesive. The inner diameter d ₁ of the bent portion 1c, the inner diameter d ₂ of the bottom recess 1b, and the length of the recess 1b are determined by the mounting portion on the winder side that is fitted when winding the yarn onto the paper tube. It stipulates that The inner peripheral portion of the washer 2 is made to protrude inwardly from the inner peripheral surface of the paper tube main body 1.

Inner diameter d ₁ of the bent portion 1c, inner diameter of the bottom recess 1b
The lengths of d ₂ and the recess 1b are determined by the mounting portion on the winder side that is fitted when winding the yarn onto the paper tube.

The washer 2 is made of paper, plastic, etc., and can be connected to the paper tube main body 1 by attaching protrusions to the outer circumferential surface of the washer 2 and press-fitting it, or by applying an adhesive and bonding it. good.

Since we have configured the above, we will explain its usage example in the third example.
To explain the diagram, the creel 3 for thread take-up
A washer 2 fixed to the bottom of the paper tube main body 1 is suspended from a hook 3a at the middle of the paper tube to support the paper tube wrapped with thread 4. Because the paper tube is suspended and installed at a downward angle, the thread-wrapped paper tube does not fall and the thread can be taken up to the end.

As described above, the thread-wound paper tube of the present invention has a paper tube main body 1
By removing the inner wall layer at both ends of the wall, a thin recess 1a, 1 is created.
b, and the outer wall layer of the recess 1a at one end is bent inward to form a bent part 1c, and at the same time, the bottom surface of the recess 1b at the other end is formed inwardly from the inner peripheral surface of the paper tube main body 1. Since the washer 2 having an inner circumferential portion protruding from the top is fixed, the structure is extremely simple, suitable for mass production, and can be supplied at low cost.
This reduces thread take-up resistance, improves thread stand, enables high-speed thread take-up, and allows smooth supply of yarn to the next process of knitting and weaving with uniform tension and yarn convergence. It can be reliably and easily suspended from the washer 2 to support the paper tube,
Thread take-up can be carried out to the end in a downward sloping state, allowing for high-speed knitting,
It can be used with looms.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a sectional view during the manufacturing process, Fig. 2 is a sectional view when completed, and Fig. 3 is an explanatory drawing showing the state when the paper tube is used. be. 1...paper tube body, 1a, 1b...recess, 1c...
...bending part, 2...washia.

Claims (1)

[Scope of utility model registration request] The inner wall layers at both ends of the paper tube body 1 are removed to form thin recesses 1a and 1b, and the recess 1b at one end of the paper tube body 1 is removed.
The outer wall layer of the paper tube body 1 is bent inward to form the bent portion 1c, and the paper tube main body 1 is formed on the bottom surface of the recess 1b at the other end.
A thread-wound paper tube, characterized in that a washer 2 having an inner circumference projecting inward from an inner circumferential surface of the tube is fixed thereto.