JPS6021923A - Rotary clip of spindle - Google Patents

Abstract

PURPOSE:The titled clip keeping yarn securely, being cleaned with a brush, etc., having a rough face of yarn end bobbin winding part consisting of plural lines of approximately V-shaped grooves sloped an a given angle from the circumference direction and almost flat ridges at the top, wherein the grooves and the ridges are alternately connected. CONSTITUTION:As shown the zone B, the protrusion 7 having the flat top 7a is set on the circumferential face of the yarn end bobbin winding part 2, the ridgelines 7b in the circumference direction and the ridgelines 7c in the axis direction forming the neighboring ridges are crossed at the bottom, respectively. In the direction shown by the sign C sloped at a given angle from the center of the axis of the spindle, the V-shaped grooves are prepared by the two slant faces 7d formed by the ridgelines 7b and 7c between the protrusions 7, and the grooves is alternately connected to the ridge part, namely the protrusion 7 along the direction C.

Description

Detailed Description of the Invention Technical Field The present invention relates to a rotating clip for a spindle in a spinning machine such as a spinning machine or a twisting machine. After that, in order to automatically wind the thread onto the empty bobbin that will be used in the next winding operation, the ring rail is lowered, and the thread is wound around the end thread winding section of the rotating clip located at the bottom of the spindle for the first winding. When the ring rail rises during the picking operation, the thread is continuously wound onto the bobbin using the tail thread winding section as a starting point. However, when the full bobbin was pulled out from the spindle, the thread was pressed against the cutter in the thread regulating part of the rotating clip due to the tension and was cut. When winding the thread around the bobbin, the end of the thread remaining on the end winding section is free.

Therefore, the thread must be held in the tail winding part by friction between the surface of the tail winding part and the thread wound thereon.

On the other hand, if the grip of the thread in the tail thread winding section is too strong, winding on the empty bobbin has started and the tail thread that has served its purpose cannot be removed easily with a brush or the like. If the remaining threads from the tail thread cannot be removed, the threads will be wrapped around the tail thread every time the tube is full, and the remaining thread will accumulate in the tail thread winding part.

When the ring rail is raised during the primary winding operation, this can get tangled with the crossover yarn that is formed between the tail end winding section and the tube winding section, causing thread breakage, or the free end of the remaining thread can cause the spindle to rotate. It may break and stick to neighboring bobbins.

For example, if the end thread winding part has a mirror surface, it is extremely easy to remove the remaining thread with a brush or the like, but on the other hand, cleaning the surrounding area is troublesome because a large amount of the remaining thread scatters.

Further, for example, in the case of a cotton thread having a qo count, the thread cannot be gripped reliably unless it is wrapped around the tail end winding part for about 7 or more turns, which inevitably reduces work efficiency.

Therefore, the conventional method is as shown in Fig. 1) to (c).

A twilled knurl is applied to the tail end portion of the rotating clip L, and a protrusion J having a chevron-shaped cross section with a relatively sharp top in both the axial and circumferential directions is formed on the surface of the end end portion λ. Ta. The tail thread winding section having such projections 3 has a good thread gripping effect, and in the case of qo count cotton thread, smooth work is ensured after winding the tail thread with about 3 turns, but the gripping force is too strong. In addition to the above-mentioned problems, there were other drawbacks such as severe brush wear.

OBJECTS OF THE INVENTION Accordingly, one object of the present invention is to provide a spindle rotating clip with a tail winding portion that allows the thread to be easily removed with a brush or the like while the thread is securely gripped.

Structure of the Invention For this purpose, the rotating clip of the present invention includes a tail end portion having a rough surface, and a thread regulating portion located above the tail end portion, the rough surface of the tail end portion having a rough surface.

They alternate and continue along at least one direction inclined at a predetermined angle with respect to the spindle axis. It is formed of a plurality of rows each consisting of a V-shaped trough and a crest with a substantially flat top. Since the troughs are V-shaped, the tail threads can be held securely, and since the top surfaces of the peaks are substantially flat, the tail threads can be removed relatively easily with a brush or the like.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.

In FIG. 4), the rotating clip according to the present invention is provided with a tail winding portion and a thread regulating portion located above the tail winding portion, similar to the conventional one shown in FIG. 1. The thread regulating portion has a plurality of circumferentially spaced pawls and an annular cutter 6 that is normally held by the pawls, and may be the same as the conventional one.

According to the present invention, as typically shown in area B in Fig.

A flat projection 7 on the top surface 7a is provided. In this embodiment, since the protrusions 7 are provided in a twilled pattern, the projections 7 can be melted from FIGS. The lower ends of adjacent circumferential ridge lines 7b, 7b' and axial ridge lines 70, 70 defining adjacent protrusions intersect, respectively, as shown in FIG. Further, it is inclined at a predetermined angle with respect to the spindle axis, that is, the axis of the tail winding portion. Figure 2 (a) K
In the direction indicated by the symbol O, as shown in an enlarged view of a row of projections in one direction in FIG. 3, there are two inclined surfaces defined by ridge lines 7b and 7c between adjacent projections 7.7. J7
(The V-shaped valleys are formed by l, and the valleys and the peaks, that is, the protrusions 7 are alternately continuous along the direction C.

In order to provide the protrusions 7 as described above on the tail bobbin part λ, the circumferential surface of the tail bobbin part λ is knurled in the same manner as before, and then the top surface of each protrusion is flattened by lathe processing. It may be formed by half-pressing the twill knurling. If the twill knurling is pressed halfway, the flesh at the boundary between the slope forming the valley and the top of the peak will swell slightly;
In this case as well, the top surface can be considered to be substantially flat.

Next, the operation of the rotary clip 1 of the present invention having the above-mentioned tail winding portion will be explained. When the pipe is full, a ring rail (not shown) descends and winds the tail thread around the tail thread winding section. Similarly to the conventional case shown in Fig. 2, when the cotton thread of lIo count is used and wound a predetermined number of times (approximately 3 layers), the full bobbin is pulled out and the full bobbin is connected to the end thread winding part K. Even if the end thread is cut, the end thread wound on the end end winding section does not loosen, and the thread can be automatically wound around the primary empty bobbin. In addition, at an appropriate point after winding the thread around the empty bobbin, cut the crossover thread connecting the empty bobbin and the end thread winding section, and then apply a brush to the remaining thread in the end thread winding section to perform the normal residual thread processing operation. The remaining threads are then easily removed and the wear of the brush is hardly noticeable.

Although the present invention has been described only with respect to an embodiment in which the protrusions are provided in a twill pattern, the present invention is not limited to this embodiment. For example, the plurality of rows of alternately successive troughs and peaks may be slightly inclined with respect to the circumferential direction of the tail peg, or one row and one row may be slightly offset.

Effects of the Invention As described above, in the rotating clip according to the present invention, the rough surfaces of the tail end portion are alternately continuous along at least one direction inclined at a predetermined angle with respect to the circumferential direction of the end end portion.

, is formed of multiple rows consisting of V-shaped valleys and almost flat peaks on the top surface, so even though the tail thread is securely gripped with the same number of turns as in the conventional method, it is difficult to use with a brush. It can be easily removed, and various troubles such as those caused by the accumulation of the remaining tail threads can be prevented from occurring, and wear of the brush can be reduced and the replacement cycle can be lengthened.

[Brief explanation of the drawing]

Figure 7) is a partial side view of a spindle with a conventional rotating clip, and Figures 1 (b) and (c) are area A in Figure 1.
FIG. 2) is a side view of the rotating clip according to the present invention, and FIGS. 2(B) and (C) are the same as FIGS. corresponds to A cross-sectional view of region B in FIG. 1(a), and FIG. 3 are enlarged views showing a part of a row of valleys and peaks. l is a rotating clip, C is a tail winding part, G is a thread regulating part, 7 is a protrusion, 7a is a top surface, and C is a direction.

Claims (1)

[Claims] A tail winding part having a rough surface and a thread regulating part located above the tail winding part, the rough surface of the tail winding part being inclined in at least one direction at a predetermined angle with respect to the circumferential direction of the tail winding part. Continuously alternating along. A rotating clip of a spindle formed by a plurality of rows each consisting of a V-shaped valley and a peak whose top surface is substantially flat.