JPS605040Y2 - Supply core brake device for collective twisting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a supply core brake device for a collective twisting machine that concentrically twists a plurality of supply cores.

In conventional collective twisting machines, brakes are attached to each supply core running from the supply side to the take-up side to adjust the supply tension of each, resulting in poor workability and poor brake tension. Unbalance often occurred, and stranded wires of stable quality could not be obtained.

For this reason, a capstan roller with a brake is provided between the supply side and the winding side, which rotates all the supply cores and brings them out to the winding side, and a pressing body such as a pinch roller is installed on this capstan roller. A supply core braking device (Japanese Patent Publication No. 47-44464) is used, but even with this device, the twisting ratios of the center core and outer core are different, so abnormal tension is generated in the outer core. As the wire is stretched out, the center core bends, causing the center core to protrude outside the outer core, causing twisting defects such as loosening of the twisted wire, reducing the quality of the stranded wire, and frequently causing work to be interrupted. This has the disadvantage that it becomes unstable and reduces work efficiency.

The purpose of the present invention is to solve the above problems and provide a supply core brake device for a collective twisting machine that can efficiently produce high-quality stranded wires. It is characterized in that the outer diameter of the portion where the central core is wrapped is smaller than the outer diameter of the portion where the outer core is wrapped.

Next, one embodiment of the present invention will be explained in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the sublife brake device 1 according to the present invention is a set in which a plurality of supply cores 2, that is, one center core 2a and six outer cores 2b are concentrically twisted. It is provided between the supply side 4 and the winding side 5 of the twisting machine 3.

The brake device 1 is composed of an integrally formed capstan roller 6 and a pressing member 7 such as a pinch roller. The core 2 is rotated only once and guided out from the upper side to the winding side 5, and the rotating shaft 6a of the capstan roller 6 is equipped with a clutch,
A brake 9 such as a band brake or a torque motor is attached to adjust the tension of the supply core 2, and the pressing body 7 is brought into contact with this roller 6, and the supply core 2 is mounted around the roller. The capstan roller 6 with the brake 9 and the pressing body 7 are installed on a base 10 so that no slip occurs.

Although this configuration is the same as that of the conventional device, the present invention has the capstan roller 6 as shown in FIG.
Portion 6b of the supply core 2 where the central core 2a is mounted
b is characterized in that its outer diameter is smaller than the outer diameter of the portion 6c that wraps the outer core 2b.More specifically, the twisting pitch of the stranded wire 11 (see FIG. P, the length of the supply core 2 constituting the stranded wire 11 per pitch is X1, and the twist rate is α.
□ will be hailed.

As a result, when calculating the twisting rate α of the center core 2a and the outer core 2b, in the case of the medium core 2a, the length X per pitch is P, so the twisting rate α is zero. In the case of the outer core 2b, if the length per pitch is 1,
−P α=T.

Therefore, the difference in length per pitch between the outer core 2b and the center core 2a is 1-P=αP, and this length difference αP is absorbed by making a difference in the outer diameter of the capstan roller 6.

That is, in the capstan roller 6, the supply core 2
The outer diameter of the central portion 6b, where the central core 2a is mounted, is d1. The outer diameter of the portions 6c on both sides, where the 11-layer core 2b is mounted, is D.
1, the number of revolutions of the capstan roller 6 is n1, and the running speed of the stranded wire 11 to be produced is .

By eliminating ■ from the above two equations, we get:

Therefore, the outer diameter d of the central portion 6b of the capstan roller 6 may be made smaller by 1+cz than the outer diameter DαD of the portions 6c on both sides.

In this way, the center core 2a will not be sagging, and the same braking force determined by the brake 9 will be applied to all the supply cores 2, that is, the center core 2a and the outer core 2b. It becomes possible to maintain uniform tension at all times.

In FIG. 1, 12 is an introduction guide roller on the winding side 5, 13 is a guide roller on the batten side, 14 is a batten, 15 is a twisting opening, and 16 is a winding section.

In the above example, the case where there is only one outer layer core is shown, but two
It can also be applied to the case of a multilayer core having more than one layer.

As described above, the present invention provides a supply core braking device for a set twisting machine in which a pressing member such as a pinch roller is brought into contact with a capstan roller equipped with a brake, in which the center core of the supply core is located on the capstan roller. The outer diameter of the part where the outer core is wrapped is smaller than the outer diameter of the part where the outer core is wrapped, so the tension in all the supply cores, that is, the center core and the outer core, is always uniform without becoming unbalanced. This makes it possible to manufacture stranded wires with stable quality and no alignment defects.

Furthermore, the twisting work is performed smoothly, there are fewer failures, and productivity can be improved.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing a set twisting machine to which the present invention is applied, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a front view showing the main parts thereof, Fig. 4 FIG. 2 is a side view showing stranded wires twisted together by a set-twisting machine. 1...Supply core brake device, 2...
・・Supply core, 2a・・・・Center core, 2b・
... Outer core, 3 ... Collective twisting machine, 4.
...Supply side, 5... Winding side, 6...
...Capstan roller, 6b... Central part of the same roller, 6c... Parts on both sides of the same roller, 7... Pushing body, 9... ····brake.

Claims (2)

[Scope of utility model registration request] (1) A capstan with a brake is installed between the supply side and the take-up side of a concentric twisting machine that concentrically twists multiple supply cores, so that all the supply cores are rotated and guided to the take-up side. In a device in which a roller is provided and a pressing body such as a pinch roller is brought into contact with the roller, the outer diameter of the portion of the supply core on the capstan roller where the center core is to be wrapped is the same as the outer diameter of the portion of the capstan roller that is used to wrap the outer core. A supply core brake device for a collective twisting machine characterized by having a smaller diameter than the outer diameter of the part. (2) The outer diameter d of the central portion of the capstan roller that carries the central core of the supply cores is set to -aD- (however, α A supply core brake device for a set twisting machine according to claim 1, characterized in that the twisting rate of the outer core is made smaller by 1+α).