JPS58224972A - String traverse device - Google Patents

Abstract

PURPOSE:To lengthen the service life by providing the string contact section when moving to the left and right on both sides of the upper end face of the string guide section of a traverse guide formed integrally with a vessel type cam follower while providing an inverting time string removal slope below. CONSTITUTION:In a traverse guide 3, a vessel type cam follower section (a) to be inserted slidably in an endless groove in a cylindrical groove cam 1 and a string guide section 6 in the center of a guide flange section (b) are molded integrally. Said string guide section 6 is provided with string contact sections A, B when moving to the left and right with predetermined distance in the traverse direction while a string removal slope C when inverting is provided below. Consequently both string contact sections A, B will traverse under reciprocal motion while when inverting the string Y will slip on the slope C and removed through the swing motion of the vessel type cam follower (a) then move between both sections A, B and inverted. Consequently the traverse switching point will not require adjustment resulting in the lengthened service life.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn traversing device.
This invention relates to an improvement in a device for winding a yarn by providing an endless spiral groove in a cylinder and causing a traverse guide to traverse the groove.

As is well known, the biggest drawback of the above-mentioned cylindrical groove cam system is that when the speed increases, the traverse guide collides with the wall of the cam groove at the turning point of the traverse, and this repeated impact force shortens the guide life. It was extremely short.

In view of such problems, the present inventor has provided the yarn guide with a leftward movement splicing part and a rightward movement splicing part separated by a certain distance from each other, so that the yarn can be removed from the yarn guide at both left and right direction change points. A thread removal guide is provided to remove the thread, and a thread forcing guide is provided at any position touching the outermost side of the left and right thread paths to constantly force the thread inward.

The distance between the left and right splicing parts of the thread guide is changed by the thread removal guide at the left and right direction change point, and the yarn removed from the left and right splicing parts of the thread guide is momentarily repelled by the force of the thread forcing guide. We have proposed a traverse device that can be transferred to another yarn welding section, and a traverse device that can dramatically improve the life of the traverse guide by preventing the yarn guide from suddenly reversing at the traverse turning point.

However, since this device uses a thread removal guide to separate the thread from the thread guide, the traversal width of the thread is not constant due to minute vibrations of the thread guide, and although it is very small, There was a problem that the reversal point was distorted. As a result, the end surface of the winding package is soft and the unwinding performance is slightly inferior, and it is extremely difficult to adjust the thread removal guide. A problem arose:

An object of the present invention is to improve the above-mentioned drawbacks and provide a traverse device that has a long traverse guide life, is easy to adjust, and can provide a good winding package in a high-speed yarn winding machine. be.

The yarn traverse device of the present invention, which has achieved the above objects, traverses the yarn by reciprocating two yarn guides from side to side. It has a cam follower, and both sides of the upper end surface of the thread guide fixed to the center of the traverse guide are used as thread welding parts.

At the upper part of the splicing part, a splicing part when moving in the right direction and a splicing part when moving in the left direction are provided with a certain distance between each other, and a slope for separating the yarn when reversing is provided below the splicing part. 6 The present invention will be explained in detail with reference to the drawings.

FIG. 1 shows an embodiment of the traverse guide used in the present invention.
H, has a boat-shaped cam follower (A), and.

A thread guide part (6) is fixed to the center of the guide flange part (→), and the thread guide part (6) is formed in the shape shown in Fig. 1 (b) and (C), and can be used as a traverse guide. It is integrally molded.

The yarn guide section (6) is provided with a rightward movement yarn joining part (A) and a leftward movement yarn joining part (B) at a certain distance in the traverse direction, and each A slope (C) is provided below the thread portion.

An embodiment of the traverse guide configured as a traverse device is shown in FIGS. 2 and 3.

Traverse guide (3) Vi, boat-shaped cam follower (a).

h' A cylinder with an endless groove on its outer circumference
The cylindrical groove cam (1) is inserted into the groove of the single-groove cam (1) so as to be able to vibrate freely, and the guide flange (b) engages with the guide rail (5) to regulate its position in the vertical and longitudinal directions.
The clockwise rotation of causes a reciprocating motion along the guide rail.

During this reciprocating movement, the thread guide part (6) is integrally molded with the traverse guide, and since the cam follower (A) is boat-shaped, it tilts clockwise (to the right) when moving to the right. When moving to the left, the IC tilts counterclockwise and performs a reciprocating motion (see Figures 2 and 3).

In addition, one end of the thread (Y) Vi is attached to the traverse point fixed guide (7
), and is carried left and right while engaging the thread welding part (A) or (B) on the side surface of the thread guide part (6) and the guide rail (5).

In order to traverse the yarn (Y),
) at the traverse turning point 1. For example, the yarn (Y
) needs to be instantly transferred.

This can be done without using any other means, such as a thread removal guide, if the traverse guide (3) is configured as described above. The principle of this operation will be explained with reference to FIGS. 4 and 5.

The movement of the thread guide section (6) at the traverse turning point is as follows:
In the case where the boat-shaped part (a), flange part (b), and thread guide part (6) are integrally molded as shown in FIG. 1, the swinging motion is performed at one reversal part. As shown in Fig. 4, if the cam rotation direction is as shown by the arrow in (d), over time the cam moves as shown in (a) → (b) → (C1). The traverse guide will be reversed.

That is, initially, the boat-shaped cam follower 0) is in a state where the cam's torsional angle (classified) is to the right, but as time passes, this gradually becomes vertical (Fig. 3 (b)), and furthermore, the torsional angle to the left changes. (θ). This movement is called the oscillation movement of the traverse guide, and the gap between this oscillation movement and the thread guide part (6) having the above-mentioned structure and no , the yarn (Y) can be easily attached to the yarn guide section (6).
You can leave more easily. A model showing this situation is shown in Fig. 5. During the swinging motion, the yarn (Y) moves onto the slope (C) provided on the lower surface of the welded yarn (5th direction) as the swinging progresses.
In the figure (in the order of (a) → (b) → (c)), they come into contact,
The tension of the yarn acting in the vertical direction acts to push the yarn (Y) forward (toward the left in the figure) of the yarn guide portion (6) due to the slope (C), and therefore, The yarn (Y) is detached from the yarn guide portion (6) and can instantly start moving in the direction of the dotted line (C) from the solid line in the figure due to the elastic force caused by the yarn tension.

Thus, even at the traverse turning point at the other end, where the movement is opposite to this, the yarn (Y) easily moves to the yarn guide section (6).
A continuous traverse movement can be performed by detaching the yarn (Y) and catching it again at the yarn guide welding section. At this time, in order to securely capture the yarn (Y),
It is preferable to enter the yarn from the back side when viewed from the tip of the yarn guide section.

What determines the release position of the yarn is the oscillation angle and the slope angle (K) (see Figure 5). By arbitrarily determining these, it is possible to determine when the yarn is actually traversing, and to obtain the best winding shape. can be obtained. In addition, as shown in Fig. 6, when the shape of the slope (C) at the bottom of the thread guide part is widened toward the end (configured so as to have an angle M toward the bottom in Fig. 6), the thread The negative swing angle at which (Y) contacts the slope (C) can be much smaller than in the above explanation.

As described above, according to the present invention, yarn removal is performed only by the swinging motion of the traverse guide at the traverse turning point and the shape of the yarn guide portion, without using a yarn removal guide, making adjustment difficult. It also has the advantage that the N and sharpness of the yarn can be arbitrarily changed by changing the shape of the traverse guide and the optical tunnel part.

[Brief explanation of the drawing]

FIG. 1(a) is a perspective view showing one embodiment of the traverse skite of the present invention, and FIGS. 1(b) and 1(c) are front and side views of the thread guide section. FIG. 2 is a perspective view of the contact portion showing an embodiment of the traverse mounting surface □ of the present invention. Figure 3 (a) is a front view of the traverse feeder of the present invention, and Figure 3 (b) is a schematic cross-sectional view of the same. Figure 4 is a developed view showing the swinging motion of the traverse guide at the traverse turning point.
(b) and (c) are front and side views of the sump showing yarn separation at the traverse turning point. FIG. 6 is a front view and a side view showing another example of the shape of the thread guide portion. Explanation of main symbols... Cylindrical groove cam 2... Traverse guide 5...
・・・・・・ Guide rail 6・・・・・・ Thread guide part A・・・・・・ Boat-shaped cam holder...
...Cam groove A...... Weaping part B when moving in the right direction...
・・・・・・ Grafting part C when moving leftward・・・・・・・・・Slope Patent applicant Asahi Kasei Industries, Ltd. Figure 1 Figure 2 Figure 3 Figure 4 (0) (c) Figure 6

Claims (1)

[Claims] In a traverse device that consists of a cylindrical grooved cam and a traverse guide engaged with a guide rail and reverses the yarn by using the elastic force of the yarn, the traverse guide (3) includes a yarn guide part (6), a flange part ( b), the cam follower part (a) is integrally formed, the cam follower (a) is made into a boat shape, and the thread guide part (6) fixed to the front surface of the traverse guide (3) has a constant width in the traverse direction. A traverse device comprising yarn welding portions (A) and (B) interposed therebetween, and a slope (C) below the welding portions.