JPH0112875B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for twisting strands.

[Prior Art] When twisting conventional wires, a pre-twisting device 10 is used, for example, using a device as shown in FIG.
2, the pre-twist is once reached to the final twist pitch, and then the pre-twist is introduced into the second twisting device 103, and at the first twist stage (point A in Figure 1), the twist is returned by half, and the second twist (point A in Figure 1) is performed. The technique of adding half of the twist to point B in Figure 1 and twisting it up to the original final twist pitch is well known. In addition, 101 in Figure 1
is a twisting die, 103A is a flyer, 103B
104 is a floating frame, and 104 is a winding bobbin. In this technology, the flyer of the pre-twisting device 102 is rotated at approximately 2 times the rotation speed of the flyer 103A of the twisting device 103.
The key point of the process is to rotate in the same direction at twice the number of revolutions, which was originally developed by the applicant and has already been published as a patent (Japanese Patent Publication No. 46-39131).

Twisting strands using the above-mentioned device is effective when the twist ratio of the strands near the center layer and the strands in the outer layer are considerably different, such as in multilayer stranded wires, for example, and
In this case, the process of twisting to the final twist pitch in the pre-twisting stage is to first ensure the amount of twist of the strands, balance the tension of each layer of strands, untwist by half, and then repeat the final twist. It is based on the basic idea of retwisting the yarn until it is tight.

[Problems to be Solved by the Invention] However, when the wire is not a multilayer stranded wire, especially when the wire is made of a material that is relatively easily deformed plastically, such as annealed copper wire, it is necessary to first pre-twist the wire at a high twist rate. This does not necessarily lead to good results; rather, the process leading to the final twist is divided into two stages, for example, half twisting each time. It has become clear that there are many cases where it is preferable to add stages of twist.

[Means for Solving the Problems] The present invention has been made based on the above-mentioned findings, and includes a flyer disk disposed downstream of the twisting die and fixed to a hollow shaft through which the strands run. , the flyer disk is rotationally driven around an axis parallel to the hollow shaft via a planetary gear mechanism, and the twist pitch of the first twist imparted to the strands by the rotation of the flyer disk; a rotary take-off device having a pair of capstand drums having a circumference including at least two of the above, and a flyer disposed downstream of the rotary take-off device and rotatably supported on a base. , a floating frame rotatably provided inside the flyer, and a winding device disposed on the floating frame for winding the stranded wire, and the flyer is substantially equivalent to a flyer disk of the rotary type pulling device. and a two-degree twisting device that is driven to rotate at a rotational speed of It is a matching device.

[Function] The rotating type pulling device gives the first twist to the strands,
The capstan drum of this rotary take-off device acts to smooth out the first twist, and the second twist device applies a second twist to the strands and winds them up.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 2 and 3.

The entire device is arranged at an appropriate inclination with respect to the vertical line Y-Y. In Fig. 2, reference numeral 1 indicates a suitable wire feeding device, reference numeral 2 indicates a wire segregating plate, and reference number 3 indicates a twisting die. is depicted.

Reference numeral 4 generally indicates a rotary take-off device, the configuration of which will be explained in detail later with reference to FIG. It is transferred to the capstan drum 43, where it is similarly wound several times, and then, like the inlet roller 41, it is directed downstream from the outlet roller 44 which is in contact with the line of progress of the strand, and the strand w is wound along this line of progress. The wire is taken up by the capstan drums 42 and 43 while being twisted around the wire.

What is indicated by the reference numeral 5 as a whole is a normal two-degree twisting device, so a detailed explanation will be omitted, but the important thing here is that the rotation axis of the flyer 52, which is rotatably supported on the bases 51, 51, is vertical. The floating frame 53, which is inclined with respect to the line Y-Y and is relatively rotatable about an axis that is the same as or parallel to the rotational axis of the flyer 52, is attached to a weight 53A attached to the bottom of the floating frame 53. Since the direction of gravity is never parallel to the axis of rotation, the floating frame 5
3 is that it can be kept stationary and stable by the weight 53A. Note that the reference numeral 54 in the figure indicates a winding bobbin driven by a coaxially provided torque motor 54A;
In the same 55, the wire w is transferred from the flyer 52 to the floating frame 53 again.
56 is the first guide roller on the floating frame 53, and 57 is a drive pulley on the flyer 52.

Now, as shown in FIG. 3, the internal structure of the rotary type pulling device 4 is such that a hollow shaft 46 that is rotatably driven by a drive pulley 47 extends along the center axis of a hollow cylindrical casing 40. A flyer disk 45 is fixed to one end. Two cap stand drums 42 are provided on the outer surface of the flyer disk 45,
43 is fixed to a shaft that is rotatably supported upright on the flyer disk 45, and gears 42A and 43A are fixed to the other ends of the shafts, respectively.

On the other hand, the hollow shaft 46 has a gear 48A on its outer periphery.
49A are connected in the axial direction, and the gear 49A is rotatable with respect to the hollow shaft 46 via the planetary gears 48B and 48C from the gear 48A fixed to the hollow shaft 46.
A gear train is configured to rotate and drive. A gear 49B is integrally and coaxially fixed to this gear 49A, and this gear 49B is connected to the gear 49 mentioned earlier.
A and 43A are meshed to rotate.
The above configuration is a planetary mechanism for rotating the capstan drums 42 and 43 at a desired rotation speed independently of the rotation of the flyer disk 45 rotated by the drive pulley 47. Note that the code 41,4
Reference numerals 4 denote an inlet roller and an outlet roller, respectively, which are provided so as to be in contact with the central axis of the hollow shaft 46. The strand w enters from the inlet roller 41, is sequentially wound around the capstan drums 42 and 43, and then passes through the outlet roller. 44 and through the central axis of the hollow shaft 46.
It goes to the twisting device 5. Note that the mechanism described here is only an example, and other mechanisms may be used as long as the mechanism is a rotary type take-up device.

Next, the process of twisting strands using the device of the present invention will be explained.

The strand w fed out from the strand feeding device 1 is led to the rotary type take-off device 4 via the segregating plate 2 and the twisting die 3, and after passing around the capstan drum 42 several times, the strand w is transferred to the capstan drum. 43 several times, and then run from the exit roller 44 inside the hollow shaft 46 and introduced into the downstream twice-twisting device 5. Inside the double-twisting device 5, the strand w is guided in exactly the same manner as in a normal twisting method, passes through the final guide roller 55 on the flyer 52, passes through the guide roller 56 on the floating frame 53, and is wound up on the winding device 54. Let it happen.

In this device of the invention, the rotational speed of the flyer disk 45 of the rotary take-up device 4 is increased by two times.
Set it almost the same as that of 2. To be precise,
Preferably, the rotational speed is approximately equal to that of the fryer 52, but does not exceed it. In this way, the strands w are twisted in the twisting die 3 by the number of rotations of the flyer disk 45 of the rotary type pulling device 4, and are wound around the outer periphery of the capstan drum 42 in the twisted state. The fibers then move to the cap stand drum 43, run around the outer periphery of the capstan drum 43, and advance to the guide rollers 55 of the twice-twisting device 5 while maintaining the twisted state. Next, from this guide roller 55 to the floating frame 5
When the wire is moved to the first guide roller 56 on the top of the wire, a twist corresponding to the rotation of the flyer 52 is applied to form a product strand.

In this case, the flyer disk 45 of the rotary take-off device 4
If the rotational speed n is greater than the rotational speed _n1 of the flyer 52 of the double twisting device 5 by Δn, then the twist will be untwisted by Δn on the upstream side where the strand w enters the double twisting device 5. If such an untwisting situation is to be avoided, it is necessary to set the conditions regarding the number of rotations mentioned earlier. On the other hand, when the number of rotations _n1 of the flyer 52 of the double twisting device 5 is slightly larger than the number of rotations n of the flyer disk 45, the strands of the strands are twisted at the same location by the difference in the number of rotations, It can be said that this actually matches the basic idea of this invented device.

What is important in the twisting process using the device of this invention described above is that first the rotating type pulling device 4
The strands w twisted by the strands are passed around the outer periphery of the cap stand drums 42 and 43 several times in the twisted state to smooth out the strands, that is, the strands w This is a process in which the elastic deformation imparted by twisting is fixed as close to plastic deformation as possible. Of course, for this reason, the diameter of the cap stand drums 42 and 43 is determined by the circumference of the flyer disk 4.
It is necessary to select at least two of the twist pitches of the first twist given to the wire w by the rotation of step 5.

In addition, regarding how to hang the wire w on the outer periphery of the capstan drums 42 and 43, although it is not shown,
It can also be hung across and 43. However, in this case, the "twisting effect" will decrease as the winding diameter increases.

[Effects of the Invention] According to the present invention, since the rotary type take-off device that gives the initial twist to the strands is equipped with a pair of capstan drums having a sufficient circumference, this rotary type take-off device In this process, the twisted state of the stranded wire is adjusted by the so-called roll-leveling method while the twisted state is approximately half of the final twist state, so that the remaining half of the twist, which is then added in the second twisting device, rides well on the existing twist, This has the effect of making it possible to obtain an excellent stranded wire that has a uniform pitch as the final stranded wire and is free from twisting and uneven twisting.

Furthermore, since the device of this invention is substantially vertical, it requires less space for installation, and because it is slanted, the top of the device is lower than that of a true vertical type, improving workability. It has the advantage that the floating frame can be held stationary by a weight, making the mechanism simple.

[Brief explanation of drawings]

Fig. 1 is a simplified side view showing an example of a conventional wire twisting device, Fig. 2 is a side view showing an embodiment of the device of the present invention, and Fig. 3 is a side sectional view showing the inside of a rotary type pulling device. . 4... Rotary type pulling device, 42, 43... Cap stand drum, 45... Flyer disk, 46... Hollow shaft,
5...2-degree twisting device, 51...base, 52...flyer,
53... Floating frame, 54... Winding device.

Claims (1)

[Scope of Claims] 1 (a) A flyer disk 45 that is disposed downstream of the twisting die 3 and is fixed to a hollow shaft 46 through which the wire w passes, and a The circumferential length includes at least two of the twist pitches of the first twist imparted to the strands by the rotation of the flyer disk through a planetary gear mechanism around an axis parallel to the A pair of cap stand drums 42,4
(b) a flyer 5 disposed downstream of the rotary take-off device and rotatably supported on a base 51;
2, a floating frame 53 rotatably provided inside the flyer, and a winding device 54 disposed on the floating frame for winding the stranded wire, and the flyer has a flyer disc of the rotary type take-up device. 45, and a two-degree twisting device 5 which is driven to rotate at a rotational speed substantially equal to that of the second twisting device 45, and the rotational axis of the two-degree twisting device is inclined with respect to the vertical direction. A device for twisting strands of wire.