JPS6111236Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of an anti-node ring installed in a ring spinning machine or a ring twisting machine, and in particular controls baling and reduces contact friction with the yarn to achieve good spinning. It is designed so that it can be maintained.

In ring spinning machines and ring twisting devices, the rings and travelers placed around the winding package cause yarn ballooning, so an anti-node ring (balloon control ring) is used to prevent this from becoming excessive. ing. Conventionally, such antinode rings were constructed by bending a metal wire with a circular cross section into an annular shape and forming a thread guiding slit in a part of it. BACKGROUND OF THE INVENTION Many products have come to be used that are formed by forming thin metal plates with excellent properties by punching, bending, or other forming methods. In addition, in such an anti-node ring, the sliding surface of the thread is wider than that of a metal wire, so various improvements and structures have been proposed to reduce frictional resistance.

By the way, there are methods to reduce frictional resistance, such as using lubricants, processing the contact surface, or reducing the contact surface, but there are problems with the selection and post-treatment of lubricants, and some It can only be applied to yarn twisting devices and cannot be used for ring spinning machines. In addition, if the contact surface is a rough or fine-grained surface that allows the yarn to bounce through it, there is a risk that the fluff will increase due to the shape.
It is effective only when the contact pressure and surface shape are specified depending on the type of yarn, and is not versatile. Many of these proposals focus on measures to reduce the contact surface, and each has been effective. However, if ballooning is constant, even if the contact area is reduced, the contact pressure per unit will only increase, and the frictional force cannot be actively reduced. The present invention has been repeatedly researched on such an antinode ring, and in particular, the shape of the antinode ring formed from the above-mentioned thin metal plate with a thickness of 2 to 3 mm and a height of 6 to 8 mm was investigated. Although we have proposed products with excellent frictional resistance and heat dissipation properties and provided them to the industry, we have not yet reached a fully satisfactory product. As a result of further research, we found that the wide-width anti-nodal ring as described above has the effect that the centrifugal airflow accompanying the balloon (in addition to the centrifugal airflow caused by the rotation of the winding thread) is regulated by its inner wall, and the upper Focusing on the fact that the air is being radiated from the side while ascending, it is possible to reduce the contact friction of the thread by actively utilizing this air flow to move the thread away from the anti-node ring sliding surface. This is what led us to this idea. That is, the present invention is the above-mentioned thin-plate molded antinode ring, in which the top and bottom sides of the inner surface in contact with the threads are respectively curved surfaces, and recesses are formed at approximately constant intervals in the center of the ring over the inner circumferential surface. The concave portion is gradually deepened from the yarn contacting surface in the direction of yarn contact movement, and its tip is formed with a circularly curved surface.

The present invention will be explained in detail below based on the drawings, which show an example of a specific implementation of the invention.
The present invention is not limited to these illustrated examples, and can be implemented in the same way even if a part of the shape or a part of the design is changed in accordance with the spirit described above and below. FIG. 1 is a schematic side view showing an example of a spindle portion to which an antinode ring of the present invention is attached, and a ring spinning machine is shown as a representative example. That is, spinning Y
is sent out by the front bottom roller 1 and top roller 1a, and twisted by the rotation of the pipe thread 10 inserted in a spindle (not shown). In addition, the spinning yarn Y is passed through the snail wire 2 and the traveler 8 loosely fitted into the ring 7 into the tube yarn 1.
0, the traveler 8 is pulled and rotated by the high speed rotation of the tube thread 10 in the direction of the arrow, thereby forming the balloon Ya.
The spun yarn Y is wound onto the bobbin 9. Also ring 7
is attached to a ring rail 6, and as the ring rail 6 moves up and down, a pipe thread 10 is formed.
The anti-node ring 5 is attached to the mounting rail and arranged so that its center coincides with the center of the pipe thread 10, and regulates the swelling of the balloon Ya, thereby preventing the formation of nodes and the contact of adjacent weights with the balloon. are doing.

By the way, as the anti-node ring 5, the second
As shown in the figure (plan view), a thin metal plate (stainless steel plate) is punched out and formed using a press machine, and its structure consists of a ring part and a mounting part 5.
As shown in FIG. 3 (a sectional view of the ring part), the ring part is composed of an outer peripheral side 5e and an inner peripheral side 5f. Then, the top surface side 5b is bent into a semicircular arc shape, and the bottom surface side is bent to have only the inner circumferential side 5c as a circular curved surface, and the outer circumferential side 5
Its tip is brought close to the lower part of e at a nearly right angle, and a slight gap is formed in the vicinity. In addition, an opening 5d is formed in a part of the ring part to receive the yarn, facing the balloon winding direction. The thread contacting surface of the antinode ring 5 is the inner peripheral side 5.
Since the inner circumferential side 5f is made up of 5 f, it is being considered to improve the shape of the inner circumferential side 5f to reduce friction. That is, in FIG. 3, the inner peripheral side 5f forms a substantially vertical surface,
Figure 4 shows a balloon Ya that is brought into contact with a wide surface to assist twisting. Figure 4 shows one in which the center part of the inner circumferential side is formed with a circularly curved surface 5g to reduce friction. The swollen circular curved surfaces are formed as 5f ₁ and 5f ₂ in the upper and lower parts, respectively, and a non-contact part 5h of the yarn is formed in the center part to reduce friction and dissipate heat generation by contact friction. FIG. 6 shows a non-contact part 5 with protrusions 11, 11 formed on the inner circumferential side.
h is wide, but all of them were aimed at reducing the friction surface and achieving a heat dissipation effect, and no consideration was given to airflow at all.

FIG. 7 is a cross-sectional view of the antinode ring 12.
The antinode ring main body is formed of a single thin metal plate in the same manner as described in the previous example, and the outer peripheral side 5e, top side 5b, and bottom side 5c of the ring portion are formed in the same manner as described above. Recesses 13 are formed at approximately equal intervals in the center of the inner circumferential side 5f over the entire inner circumferential surface (excluding the opening 5d). FIG. 8 is a cross-sectional view taken along the cutting line - in FIG. The subsequent antinode ring is fitted into a mold with protruding claws corresponding to the recesses 13 formed on the circumference so as to push the ring open, and molded by pressing toward the center using a split outer mold. Then polish it. The width C (FIG. 7) of the recess 13 is 1.0 to 1.5.
It is recommended that the length D be 8 to 12 mm, and the depth E (Fig. 8) be 1 to 2 mm.
mm. These dimensions can be appropriately selected depending on the inner diameter of the antinode ring and the spinning conditions. Also, the interval between the recesses 13 can be selected appropriately, but is 3 to 5 mm.
It is recommended that the In addition, when forming the recessed portion 13, it is connected to the inner peripheral side 5f surface by a circularly curved surface, but in particular, the circularly curved surface in the direction of movement of the balloon Ya should be formed as a circularly curved surface with a larger diameter than other parts. is recommended. That is, if the balloon Ya moves in the direction of the arrow in FIG.
It is desirable that the curved surface 13b on the exit side has a larger diameter than the curved surface 13a in the movement entry direction.

In the antinode ring 12 constructed in this way, as shown in FIG. 8, the rotation of the tube 10 (FIG. 1) causes an air flow as indicated by arrow A to hit the inner peripheral side 5f. In addition, as shown by the arrow, the ballet Ya is rolling and being swung around and moving along the inner circumferential side 5f, and the airflow A is being sent in the moving direction while assisting the contact, but it is Since the blown air current has no place to escape, it will escape from the curved surface 13b of the recess 13, but its direction is formed along the curved surface 13b as shown by arrow B, and the balloon Ya is formed as shown by dotted line Ya1. , acts in a direction to move away from the inner peripheral side 5f. Therefore, contact pressure due to ballooning can be reduced.

However, in such a recess 13, the force of the blown airflow to escape is weak. Therefore, in the present invention, as shown in FIG. 9 (a partially enlarged view of FIG. 7) and FIG. 10 (a sectional view taken along the cutting line X-X arrow in FIG. The concave portion 13c has a curved surface 13b, and the concave portion 13c is thus gradually deepened in the direction of yarn movement to form the curved surface 13b, so the airflow blown into the concave portion 13c is directed in the direction of separating the yarn by the curved surface 13b. This allows you to flow more effectively.

Since the antinode ring is configured in this way, the contact resistance of the balloon can be reduced compared to the conventional antinode ring, and the spinning speed can be increased. Furthermore, by reducing contact friction, heat generation is also reduced, allowing stable operation.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an example of a spinning section to which the present invention is applied, Fig. 2 is a plan view of an antinode ring, and Figs. 3, 4, 5, and 6 are cross sections of an antinode ring. The figure shows each improvement. FIG. 7 is a central vertical cross-sectional view of the antinode ring of the present invention, FIG. 8 is a cross-sectional view along the cutting line - in FIG. 7 in the direction of the arrow, FIG. 9 is an enlarged view showing an example of the configuration of the present invention, and FIG. 10 9 is a sectional view taken along the cutting line - in FIG. 9 in the direction of the arrow. 1... Front bottom roller, 2... Snail wire, 3... Rappet, 4... Rappet bar, 5... Antinode ring, 6... Ring rail, 7... Ring, 8... Traveler, 9...
Bobbin, 10...Tube thread, 11...Protrusion, 12...
The antinode ring of the present invention, 13... recess.

Claims (1)

[Scope of utility model registration request] An anti-node ring is installed in the spinning winding section of a ring spinning machine or a ring twisting machine, and the ring part forming the yarn receiving opening and its attachment part are formed of a single metal plate. The width in the height direction is at least 6 mm, the inner thread contacting surface has curved surfaces on the top side and the bottom side, and recesses are formed at approximately constant intervals across the inner peripheral surface at approximately the center thereof, and the recesses An antinode ring is characterized in that the thread contact surface is gradually deepened in the direction of contact movement of the thread, and its tip is formed with a circular curved surface.