JPS62290686A - Thread take-up device for synthetic fiber winder - Google Patents

Abstract

PURPOSE:To secure the coupling between a thread and a cut groove by fitting a rod capable of shifting a thread take-up guide to the right or left and shifting the thread to the cut groove by a preset distance while pressing the thread to a bobbin at the time of the switching of a spindle. CONSTITUTION:A thread take-up guide 10 has a coupling face inclined in the fixed direction, thereby a thread T is displaced to the right and is invariably held at a fixed position. The waiting position of this thread take-up guide 10 is a position where the thread T is held slightly inside a bobbin 2 from the cut groove 6 of the bobbin 2 when a thread handler guide 5 is operated. At the time of the switching of a spindle 1, the thread T is coupled with the bobbin 2 by the advance of the thread take-up guide 10, then a cylinder 15 is operated to displace a rod 13 to the right. Then, the thread T is shifted to the right together with the thread take-up guide 10 while being pressed to the surface of the bobbin 2 and reliably enters the cut groove 6 on its way.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a winding process in which filament threads melt-spun from a nozzle are continuously taken up as a package in a synthetic fiber spinning process. Regarding the removal machine. In particular, the present invention relates to a threading device in a turret-type automatic winding machine that is equipped with two spindles and continues winding while switching between the two spindles alternately.

[Conventional technology]

In the above-mentioned automatic winding machine, two spindles carrying the bobbin are attached to both ends of a common drum in the diametrical direction, and as the drum rotates, they alternately occupy a yarn winding position and a standby position. It is composed of When the bobbin on the spindle in the winding position becomes full, the drum rotates and moves it to the standby position, and at the same time brings the other spindle carrying the empty bobbin in the standby position to the winding position. Then, the yarn is configured to continue winding continuously without stopping spinning.

When switching between the two spindles, it is necessary to move the yarn at the end of the winding of the full bobbin to a new empty bobbin and wind it on the surface of this new empty bobbin. The thread is removed from the traverse device that reciprocates along the longitudinal direction of the bobbin, and the thread is thinned by a thread guide to the cut groove usually provided at one end of the bobbin, and then the thread is attached. This is done by pushing it into the cut groove using a guide. In conventional automatic winding machines, in order to perform this thread switching operation reliably, the thread guide and thread attachment are rotated 8 times so that the position of the guide at the time of switching operation is aligned with the position of the cut groove of the empty bobbin on the spindle. It was in order.

[Problem that the invention seeks to solve]

However, the position of this cut s is not necessarily constant due to differences in the manufacturing accuracy of the bobbin and/or the accuracy of compatibility with the spindle.Moreover, in recent years, winding machines have become multi-end, that is, one spindle can carry multiple bobbins. This trend is becoming more and more prevalent as it becomes more common to wind multiple threads at the same time, and moreover, the use of collection bobbins with low dimensional accuracy has become more prevalent.For example, with bobbins on the same spindle, There were cases where the position of the cut groove on each bobbin varied by about 3 to 5 cm. If automatic switching is performed in such a state, even if the thread is pressed against the bobbin by the guide, the thread will not enter the cut groove and the switching will fail, making it impossible to expect stable operation.

[Means for solving problems]

The present invention solves the problems of the prior art described above, and provides a threading device in which the yarn is reliably introduced into the cut groove even if the position of the cut groove of the bobbin on the spindle changes somewhat. The purpose is to

The purpose of this is to have a plurality of spindles carrying bobbins, wind the synthetic fiber filament yarn as a puff cage on the bobbin on the spindle at the winding position, and when the spindle is full, switch the spindles and move the other spindle carrying the empty bobbin. In a turreft-type automatic switching winding machine that moves the spindle to the winding position and continues winding again, the thread is moved along the bobbin at the time of switching. R
and a thread guide fixed to a swingable rond provided parallel to the spindle axis. The rond is configured to be movable back and forth with respect to the bobbin surface, and furthermore, the rond is movable by a predetermined distance in the axial direction of the spindle. The thread that has been guided up to this point is pressed against the bobbin surface by the guide, and at the same time moves in the axial direction of the spindle, during which it is cut. Threading is achieved by means of a device which is characterized by being pushed into the g.

Hereinafter, the present invention will be explained in more detail based on preferred embodiments shown in the drawings.

FIG. 1 shows a front view of a turret type automatic switching winding machine in which a threading device according to the present invention is used. This winding machine has a plurality of bobbins (five in this example) on a spindle 1. 2, and is configured to wind a spun filament yarn T from a spinning machine (not shown) onto each bobbin to form a package P. This winder also includes two spindles, which are mounted on the sides of the rotatable drum parallel to and symmetrically with the axis of the drum. It is configured to be able to alternately occupy a holding position and a standby position (not shown) below the holding position.

During normal winding, the yarn T enters the winding device from above and is reciprocated from side to side by the traverse mechanism 3.
It is wound along a touch roll 4 onto a bobbin 2 carried on a spindle 1 to form a paso cage.

In order to make it easier to understand the features of the present invention, the operation when switching the spindle in a conventional winding machine will first be explained.

When switching the spindle, as shown in FIG. 2, the thread release plate 9 springs up from the standby position shown by the imaginary line, contacts the thread T, and disengages from the traverse mechanism. Next, the thread shifting guide 5, which was waiting on the side of the thread path, is activated to move the thread to the right side along the bobbin 2, as shown in FIG. to approach the cut groove 6 that has been cut. At the same time, clockwise rotation of the drum is started to change the position of the spindle l, and the spindle carrying the full bobbin 2a is in the lower position (standby position).
The spindle 1 carrying the empty bobbin 2 occupies the upper position (winding position). As this drum rotates,
A yarn regulating bar 7 fixed thereto and extending in the axial direction of the spindle 1 also rotates, catching the yarn connected from the spinning machine to the full bobbin 2a and pushing it backward as shown in FIG.

During this time, the spun yarn continues to be wound on the full bobbin 2a, which continues to rotate due to inertia.

Next, the thread guide 10, which was waiting at the position shown in the imaginary line in FIG. Push into cut groove 6. Then, winding of the yarn T onto a new bobbin 2 is started due to the friction between the yarn and the cut groove 6, and the yarn connected to the full bobbin 2a is cut near the guide 10.

The above is the behavior when switching the spindle in a conventional winding machine.As mentioned above, this method ensures that the cut grooves 6 of each bobbin 2 are accurately engaged with the yarn. There are many failures.

The feature of the present invention is the structure of the guide 10 and its function, which will be explained next based on the drawings. The thread attachment guide 10 is pivoted 11a to the frame of the winding machine.
A rod 13 is attached to the tip of the book arm 11 via a bearing 12 so as to be movable left and right, and is installed in correspondence with each bobbin 2.

A cylinder 14 is pivotally attached to the frame of the winder, and the other end of one of the arms 11 is pivotally supported on the piston rod 14a. This configuration allows the arm 11 to swing between the two positions shown in FIG. 2 when the cylinder 14 is actuated. Arm 1 that cooperates with the cylinder 14
Another cylinder 15 is horizontally fixed to the tip region of the piston rod tSa, and the tip of the piston rod tSa is connected to one end of the rod 13 via a lever 16. With this configuration, when the cylinder 15 is actuated, the thread is attached to the guide 1.
The rod 13 carrying 0 can move left and right.

As shown in FIG. 1, the thread attachment guide 10 has an engagement surface inclined in a certain direction, and is configured to displace the thread to the right during operation and always hold it in a fixed position. has been done. The standby position of the threading guide 10 is such that when the thread shifting guide 5 is activated as shown in the figure, the thread is moved slightly inside the bobbin (preferably about 5mm
This is the position where it is held at about

When switching the spindle, the threading is carried out by advancing the guide to engage the thread and the bobbin according to the previously described known procedure, and then the cylinder 15 is actuated to displace the rod 13 to the right by about 1Qwm.

Then, the thread remains pressed against the surface of bobbin 2,
The thread attachment moves to the right together with the guide 10 and reliably enters the cut groove 6 on the way. Therefore, the misalignment between the yarn and the bobbin that often occurred during conventional switching operations is completely eliminated.

(Effects of the Invention) As described in detail above, according to the present invention, the guide is attached to the rod that can move left and right, and when switching the spindle, the rod is actively moved into the cutting groove while pressing the yarn against the bobbin. Since it was configured to move a predetermined distance toward
The alignment between the yarn and the cut groove is ensured, the success rate of switching is greatly improved, and productivity is improved.

[Brief explanation of drawings]

FIG. 1 is a front view of a winding machine equipped with the device of the present invention, and FIG. 2 is a cross-sectional view showing the main part of the device with the same thread attached. ■... Spindle 2... - Bobbin 3 - Traverse mechanism 5 - System gathering guide 6 - Cut groove 7 - System regulation bar 9 - System removal plate 10 - Thread attachment guide 11 - Arm 13-・-Rod 14.15- Cylinder Fig. 1 s2 Fig.

Claims (1)

[Claims] 1. Equipped with a plurality of spindles carrying bobbins, the synthetic fiber filament yarn is wound as a package on the bobbin on the spindle at the winding position, and when the spindle is full, the spindle is switched and the other spindle carrying an empty bobbin is switched. In a turret-type automatic switching winding machine that moves the yarn to the winding position and continues winding again, a yarn guider that guides the yarn along the bobbin to a position approximately corresponding to the cut groove provided on the bobbin at the time of switching. It has a guide and a threading guide fixed to a swingable rod provided parallel to the spindle axis, and the threading guide is configured to be movable in the front and back direction with respect to the bobbin surface by swinging of the rod. is,
Further, the rod is movable by a predetermined distance in the axial direction of the spindle, so that when the spindle is switched, the thread guided to the vicinity of the cut groove of the bobbin by the thread guide is transferred to the bobbin by the thread setting guide. A threading device characterized in that it is pressed against the surface and simultaneously moves in the axial direction of the spindle, during which time it is pushed into the cut groove.