JPH042940Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a traverse guide for traversing yarn in a yarn winding machine.

The traverse guide engages a follower of a traversing groove formed by connecting two spiral grooves in opposite directions on the circumferential surface of the traversing cam at the ends thereof, thereby causing traverse by the rotation of the traversing cam. However, in conventional traverse guides, for example, as described in Japanese Utility Model Publication No. 49-7872, a small piece of ceramic molded material such as titanium oxide is fitted and adhered to the part that contacts the thread to form a thread guiding part. However, since the thread passes through the thread in contact with the same part of the thread guiding part from beginning to end, the thread is worn out quickly, which causes damage to the thread, and the manufacturing process is also relatively troublesome. It was hot.

In addition, in order to improve this problem, a plurality of shafts are provided in parallel in a manner that is approximately perpendicular to the surface along the thread running path of the guide holder and sandwich the thread, and a rotating body is rotatably pivoted to each shaft. A traverse guide designed to prevent fluffing by doing so has been proposed as Utility Model Publication No. 41-20567.

As shown in the example, the rotating body of the above-mentioned rotary traverse guide is a straight roller with flange-like large diameter parts at both ends. It is difficult to automate the so-called threading operation of inserting the thread into the thread gap, and not only does it require a separate means for guiding the thread into the thread gap, but it is also necessary to provide a large diameter flange at the end to prevent the thread from coming off. In addition, there were many problems such as it being extremely difficult to take out and remove the thread if it wound around the roller surface.

The present invention eliminates the above-mentioned conventional disadvantages, constantly renews the contact part with the thread to prevent wear and tear of the contact surface due to friction with the thread, damage to the thread, and thread breakage, and also prevents thread hanging during doffing. The purpose of this system is to enable automation of the process, to prevent the thread from coming off, to ensure accurate traverse, and to facilitate the removal of the thread wrapped around the rollers. In the traverse guide of a winding machine, which is installed in a traverse guide with a thread sandwiched between them, each of the pair of rotating bodies is a conical roller, and one generatrix of the conical rollers is orthogonal to the traverse direction, and It is characterized by being pivoted to face each other with a thread passing gap in parallel.

The guide characterized by the present invention is the second embodiment.
As shown in the figure, it is used in combination with a cam box c by engaging a follower 2 with a traverse groove b provided on the circumferential surface of a traverse cam a, and the rotation of the traverse cam moves the axial direction of the cam a. Both rollers 3 reciprocate along
By the traversing operation of step 3, the yarn e sandwiched between the thread passing gap α between the two conical rollers 3, 3 is traversed and wound around the bobbin f, and the bobbin f comes into contact with the roller label d provided on the cam box c. I made it rotate.

Since the axes of the conical rollers 3, 3 are inclined with respect to the traverse direction, the thread e wound around the roller surface between the thread passing gap α is directed toward the base side (large diameter side) of the roller, and the contact point is spiral. In addition, the yarn e being traversed has a longer length of winding around the roller 3 as it gets closer to the traverse end, so the farther from the traverse center the yarn e becomes It is possible to prevent the thread from separating from the thread threading gap α due to the increased pulling action on the radial side, and the contact point of the traverse medium thread e is constantly moved and updated, eliminating the adverse effects caused by friction at the same contact point. .

Also, during the threading operation associated with doffing at full winding, the thread e is attached to the outer surface of either one of the rollers 3, 3.
is located, and when the roller 3 is traversed, the axis of the roller 3 intersects the traverse direction at an obtuse angle, and the outer generatrix is even more inclined to the traverse direction. The contacting thread e moves in a spiral manner toward the small diameter direction of the roller 3 according to the inclination, and is automatically guided into the thread passing gap α through the tip of the roller 3. There is no need to provide a yarn guiding means, and the conical shape of the roller makes it easy to take out the yarn wrapped around the roller surface.

Embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a traverse slide, and a bearing tube 1a is provided on the lower surface of the slide projecting obliquely outward, into which a shaft piece 2a of a follower 2 is rotatably inserted.
The illustrated example of the follower 2 includes a boat-shaped follower 2b fixed to the lower end of the shaft piece 2a and a roller-shaped follower 2c loosely fitted to the shaft piece 2a. A mounting base piece 4 is fixed to the upper surface of the front end of the traverse slide 1, and a pair of conical rollers 3, 3 are fastened to the upper surface of the traverse slide 1 with locking screws 5 through shaft pieces 3a. It is rotatably provided via bearings 6 and 7.

The pair of conical rollers 3, 3 are mounted parallel to each other with one generatrix of each being orthogonal to the traverse direction of the traverse slide 1 with a predetermined thread passing gap α.

In the illustrated example, the tips of the small diameter portions of the pair of conical rollers 3, 3 are spherical to facilitate the introduction of the thread into the thread threading gap α during threading.

According to the present invention, the traverse guide is composed of a pair of freely rotating conical rollers, one side generatrix of both rollers is orthogonal to the traverse direction of the yarn, and the yarn threading gap is formed by making them parallel to each other and facing each other. Therefore, since the axes of both rollers are inclined with respect to the traverse direction, the contact area with the yarn is constantly updated during rotation and contact with the yarn, which prevents wear and tear on the contact surface due to friction unlike rollers that always contact the yarn at one point. Damage to the yarn and yarn breakage can be prevented, and the yarn in the thread threading gap always tends to be drawn toward the larger diameter side, so it can be prevented from leaving the thread threading gap, and the outer generatrix of both rollers can be prevented. is inclined at an obtuse angle with respect to the traverse direction, so by moving the thread along the inclined surface by the traverse action of the rollers, it is possible to automate threading by automatically guiding the thread into the thread threading gap. Moreover, since the roller has a conical shape, the yarn wound around the roller can be easily removed and taken out.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway plan view of the traverse guide, and FIG.
The figure is a partially cutaway side view showing how the traverse guide is used. 1...Traverse slide, 3...Conical roller, α...Threading gap.

Claims (1)

[Scope of utility model registration request] In a traverse guide for a winding machine in which a pair of rotating bodies are rotatably arranged side by side and the thread is traversed between them, the pair of rotating bodies are conical rollers 3, 3, respectively, and the conical rollers 3, 3 A traverse guide for a winding machine, which is supported so that one side generatrix is orthogonal to the traverse direction and faces parallel to each other with a thread passing gap α.