JPH0718060B2 - Bottom yarn processing equipment in spinning machines, twisting machines, etc. - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tail yarn processing device in a spinning machine, a twisting machine, or the like.

(Prior Art) In a spinning machine or a twisting machine such as a drawing twisting machine,
In order to perform the pipe change work automatically, after pulling out the full bobbin from the spindle, cut the bottom thread connected between the full bobbin and the spindle, and the cut bottom thread remains connected to the spindle. It is necessary to keep the state.

Therefore, conventionally, on the surface of the spindle, provided is a hooking tool for hooking and holding the loop winding wound on the spindle, a knurled surface, a satin surface, etc., and the loop winding is hooked on the hooking tool and cut. A device for fixing the tail yarn to the spindle has been proposed (JP-A-60-126334).

Further, in JP-A-60-134032, a spindle base is provided with a restricting portion having a cutting blade and a groove formed around the spindle, and a knurled surface for winding and fixing the tail thread, and the tail thread winding is provided. It is described that a cutter position for cutting a crossover yarn formed between a portion and a bobbin winding start position is movably provided.

(Problems to be Solved by the Invention) However, in such a conventional device, it is difficult to reliably fix the cut tail yarn.

That is, in the device described in JP-A-60-126334, when the fully wound bobbin is pulled out from the spindle, the loop winding is caught on the surface of the spindle, but this catching is not performed reliably, and , It becomes difficult to securely fix the tail thread. Furthermore, in this device, when pulling out the fully wound bobbin, it is required that the butt thread is stored inside the bobbin so as not to go out to the outside of the bobbin. Then, in the next cheese winding winder process, the tail yarn that has come out to the outside becomes an obstacle, and many troubles such as yarn breakage occur.

Also, in the device disclosed in Japanese Patent Laid-Open No. 60-134032, the tail yarn residual yarn wound 4 to 5 times on the knurled surface of the spindle base is completely scattered and removed by the rotational centrifugal force of the spindle. Therefore, a new bottom thread is wound on the remaining bottom thread remaining thread, and as a result, the effect of fixing the bottom thread winding position by the knurled surface is lost, and the bottom thread moves due to a slight external force. Then, there is a problem that it comes to loosen. Further, there is also a disadvantage that the yarn end of the tail yarn residual yarn is entangled with the yarn being wound, which causes breakage of yarn and generation of fluff. An object of the present invention is to solve the above-mentioned problems of the prior art, to reliably fix the tail thread to the spindle base portion, and to reliably process the tail thread residual thread during machine operation. To provide.

(Means for Solving the Problems) The present invention has been made to achieve the above-mentioned object, and a blade holder provided with a cutting blade is provided on a spindle base, and an upper slit is provided under the blade holder. A bottom thread holding portion provided by pressing the ring and the lower slit ring is provided, and further, a cutting blade for cutting the crossover thread continuous between the bobbin and the bottom thread holding portion, the upper slit ring and the lower slit ring. The tail yarn processing device in a spinning machine, a twisting machine, or the like, characterized in that it is integrally formed with a slit ring moving element that releases the pressed state, and is installed so as to be separable from and in contact with the operating position.

The device of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing an example of the device of the present invention, in which a blade holder 4 provided with a cutting blade 3 is provided at the base of a spindle 2 on which a bobbin 1 is mounted, and an upper slit ring 5 and a lower slit are provided below the blade holder 4. A tail thread holding portion 7 is provided by pressing the ring 6. The upper slit ring 5 and the blade holder 4 are integrally formed, and the lower slit ring 6
However, it is pressed against the upper slit ring 5 by a pressing means 8 such as a spring provided therebelow. In this case, the blade holder 4 and the upper slit ring 5 may be formed separately, and further, the pressing means 8 is provided between the blade holder 4 and the upper slit ring 5, and the upper slit ring 5
May be pressed against the lower slit ring 6. Upper slit ring 5 and lower slit ring 6
Can be made of any material such as metal or plastic. It is also possible to use one of the upper slit ring 5 and the lower slit ring 6 as a magnet and the other as a magnetic body to press both slit rings 5, 6 by magnetic force.

On the other hand, it is fitted between the upper slit ring 5 and the lower slit ring 6 with a cutting blade 10 that cuts the transition yarn 9 from the tail thread holding portion 7 to the bobbin 1 between the bobbin 1 and the tail thread holding portion 7. Then, the lower slit ring 6 is pressed down against the pressing force of the pressing means 8 and the slit ring mover 11 for temporarily releasing the pressed state of both slit rings 5, 6 is integrally formed. That is, the traveling yarn 9 is cut and the slit rings 5 and 6 are released from the pressed state while traveling along the machine base. In this case, the cutting blade 10 and the slit ring mover 11 are not limited to the method of traveling along the machine base as described above, and one cutting blade 10 and one ring mover 11 are provided for each weight. And adopting any other method such as allowing it to move back and forth in a direction perpendicular to the spindle row so as to cut the crossover thread 9 and release the pressed state of both slit rings 5 and 6. You can

Further, the ends of both slit rings 5 and 6 are in an expanded shape so that the slit ring moving element 11 can be easily fitted and removed, that is, the ends of the upper slit ring 5 are inclined upward or the lower slits 5 are slanted. It is preferable that the end of the ring 6 is inclined downward, or the end of the upper slit ring 5 is inclined upward and the end of the lower slit ring 6 is inclined downward. Furthermore, the slit ring mover 11
Although it may be constituted by a fixed member, it is preferable that it is constituted by a rotating body such as a bearing because the slit rings 5, 6 can be smoothly fitted into and separated from each other.

(Operation) Next, the operation of the device of the present invention will be described with reference to FIGS. 2 to 6, the blade holder 4 and the upper slit ring 5 are separately formed, and the pressing means 8 is provided between the blade holder 4 and the upper slit ring 5 to dispose the upper slit ring 5. This shows an example in which the lower slit ring 6 is pressed. The same parts as those in FIG. 1 are designated by the same reference numerals as those in FIG. 1 and their explanations are omitted.

First, FIG. 2 shows a state immediately before the start of winding by a spinning machine, a twisting machine or the like. The yarn Y from the roller portion (not shown) of the spinning machine, the twisting machine or the like is the ring 12 After passing through the traveler 13 that is fitted in, the end portion is held by the tail thread holding portion 7 including the upper slit ring 5 and the lower slit ring 6. Next, when winding is started, the ring 12 is raised to the winding position of the bobbin 1 as shown in FIG. At this time,
A crossover thread 9 is formed between the tail thread holding section 7 and the bobbin 1. The ring 12 reciprocates within the yarn winding position range of the bobbin 1 to form a yarn package on the bobbin 1 as shown in FIG. 4, while the cutting blade 10 and the slit ring mover 11 Is moved to the operating position, the crossing thread 9 is cut by the cutting blade 10, and the upper slit ring 5 is pushed up by the slit ring moving element 11 to press the upper slit ring 5 and the lower slit ring 6 in the tail thread holding portion 7. Cancel the state. Thus, the tail thread remaining portion held by the tail thread holding portion 7 is scattered and removed by the rotational centrifugal force of the spindle 2.

FIG. 5 is a plan view illustrating one embodiment in which the cutting blade 10 and the slit ring moving element 11 are moved.
The slit ring moving element 11 and the slit ring moving element 11 move in the direction of the arrow along the spindle row, that is, the machine base, and the crossing thread 9 is moved by the cutting blade 10.
After cutting, the slit ring moving element 11 releases the pressed state of the tail thread holding portion 7. This operation is repeated for each weight while moving the cutting blade 10 and the slit ring mover 11.

When the thread is fully wound on the bobbin 1, the ring 12 is again lowered to the position of the tail thread holding section 7 as shown in FIG.
The buttocks are held by the buttocks holding section 7. In this case, since the last tail thread remaining portion has been completely scattered and removed, the tail thread can be pinched very reliably. Then, the fully wound bobbin is pulled up by an auto doffer. At that time, the transitional thread formed when the ring 12 is lowered to the position of the tail thread holding section 7.
14 is cut by being pressed against the cutting blade 3 under tension.

By repeating the above operation, the pipe replacement work can be automatically performed.

(Effect of the invention) According to the present invention, since the tail thread holding portion in which the pair of slit rings are pressed is used, the tail thread can be reliably held, and the tube replacement work is automatically performed. It will be possible to implement without failure. In addition, the tail thread remaining, which is an obstacle to the tail thread holding, is released by releasing the pressed state of the slit ring and scattered and removed by the centrifugal force of rotation of the spindle, so failure of the tail thread holding is almost completely avoided. It

[Brief description of drawings]

FIG. 1 is a side view showing an example of the device of the present invention, and FIGS.
6 and 6 are side views for explaining the operation of the device of the present invention, and FIG. 5 is a plan view for explaining the operation of the device of the present invention. 1 ... Bobbin, 2 ... Spindle, 3 ... Cutting blade, 4 ...
… Blade holder, 5 …… Upper slit ring, 6 …… Lower slit ring, 7 …… Bottom thread holding part, 8 …… Pressing means,
9, 14 ... Crossover thread, 10 ... Cutting blade, 11 ... Slit ring mover.

Claims (1)

[Claims] 1. A blade holder provided with a cutting blade on a spindle base, and a tail thread holding portion for pressing an upper slit ring and a lower slit ring is provided under the blade holder, and a bobbin and a bobbin are also provided. A cutting blade that cuts the crossover thread that is continuous between the tail thread holding portion and a slit ring mover that releases the pressed state of the upper slit ring and the lower slit ring are integrally configured, and A tail yarn processing device for a spinning machine, a twisting machine, etc., which is installed so that it can be separated from and contacted.