JP2001270657A - Method and device for winding cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid winding disorder resulting from layer-up. SOLUTION: When a cable 3 is wound on a drum 1 in layers with inching traverse winding, a traverse pitch Pi of the cable 3 in each of winding layers and a terminal gap LG at the windup side of the winding layer are computed from an inner width Wi of the drum and a diameter D of the cable. During winding, the layer-up of the cable 3 at the beginning of the winding layer after the second winding layer of the cable 3 is detected. In the winding layer starting at the layer-up, a range β1β2 of traverse is set with the rotating angle position of the layer-up as a reference to avoid the layer-up at the angle position of the layer-up in each of winding layers, resulting in no traverse.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method for winding a cable such as a copper wire cable or an optical fiber cable for communication on a winding drum in a multi-layered manner, and a winding method for carrying out the method. Related to the device.

[0002]

2. Description of the Related Art Conventionally, a cable for communication or the like has been wound on a winding drum in multiple layers at a constant pitch.
In order to perform winding with higher accuracy, winding by inching traverse winding has been considered and is being implemented.

[0003] Inching traverse winding is a circumferential winding in which the winding position is wound without shifting the winding position in the axial direction of the drum,
A combination of traverse winding in which the winding position is shifted by one turn in the axial direction of the drum, and traverses only in a part of the angle range, usually about several tens of degrees in one turn. Is the way.

[0004] By this inching traverse winding, as shown in FIGS. 4A and 4B, the winding of the drum 21 from one flange portion 22 to the other flange portion 22 progresses. , 22 is formed with a winding layer in which the turns of the cable 23 are arranged densely or with a small gap, and when reaching the other flange 22, the winding layer moves to a higher winding layer.

[0005] In this case, if the winding height of the cable 23 becomes uneven at the transition from the lower winding layer to the upper winding layer, the winding will be disturbed from the unevenness. A required terminal gap LG is set between the last turn of the layer and the flange 22 facing the layer, and the height of the cable 23 at which the winding of the upper winding layer starts is adjusted to the required height. Like that.

[0006] That is, due to the end gap LG, the turn at which the upper winding layer starts to be wound is as shown in FIG.
As shown in (B), the vehicle rides up so as to partially fit into the terminal clearance LG while being in contact with the flange portion 22, and rises in height, and its height is aligned with other turns belonging to the same upper winding layer. become. Thus, in each of the winding layers from the second winding layer onward, the cables 23 are aligned and laminated at the same height over the entire inner width of the drum 21, so that the winding layers do not have irregularities.

[0007]

In the above-mentioned conventional winding method, the dimensions of each part of the drum 21 and the cable 2
If the winding state of No. 3 is as set, the layer should rise when the distance between the cable 23 and the flange 22 is reduced to the terminal gap LG by traverse at the winding end side of each winding layer. That is, the part E of the rising layer is
As shown in FIG. 5A, it should be in the range β of the traverse.

Then, in the winding layer where the rising of the layer starts, the traverse of the subsequent turns is performed so that the rising portion E is located at the traverse end position.
The winding height in the vicinity of the layer rising portion E is uniformly arranged.

However, in practice, the drum is made of wood, the molding accuracy is low, and the cable itself is subjected to torsional stress. Particularly in an optical fiber cable, the torsional stress is relatively remarkable due to the structure in which the optical fiber is spirally housed. For this reason, the winding position of the cable may be slightly displaced in the axial direction of the drum for such a reason. In such a case, the interval between the cable of the last turn and the flange portion is not as set, and the There is a possibility that the layer rises except where the space between the layers is narrowed to the terminal gap.

As described above, if the layer rise does not occur in the angle range of the traverse, in the next winding layer starting from the rise of the layer, there is a deviation between the angle position of the layer rise and the angle range of the traverse. The height of the cable becomes uneven near the rise of the layer, which causes turbulence.

Such turbulence has been particularly noticeable in optical fiber cables. This is because the fiber diameter of the optical fiber cable is smaller than that of the conventional cable, the influence of the molding accuracy error of the winding drum is large, and the relatively large twist is caused by the structure of the optical fiber cable itself as described above. Is caused in the cable.

SUMMARY OF THE INVENTION The present invention addresses the above-described problems, and describes an angle position of a cable rising at the winding end side of a stacked winding layer, and an angle range of a traverse of the winding layer following the winding. It is an object of the present invention to eliminate the deviation between the layers and prevent the occurrence of winding disturbance due to the layer rising.

[0013]

In order to achieve the above object, a winding method according to the present invention is directed to a winding method for winding a cable on a winding drum in multiple layers by inching traverse winding. From the value of the inner width between the flanges and the diameter of the cable, a step of calculating the traverse pitch of the cable in each winding layer, and the terminal gap between the final turn and the drum flange on the winding end side of the winding layer, Detecting the rise of the cable at the beginning of winding of the second and subsequent winding layers of the cable; and performing the traverse based on the rotation angle position of the rising layer in the winding layer starting at the above-described winding. Including.

Further, the winding device of the present invention is a winding device for winding a cable in multiple layers on a winding drum by inching traverse winding, wherein the inner width between both flange portions of the drum and the diameter of the cable are determined by: Calculating means for calculating the traverse pitch of the cable in each winding layer and the terminal gap between the last turn and the drum flange at the winding end side of the winding layer; and starting winding of the second and subsequent winding layers of the cable. And a traverse control unit for performing a traverse on the basis of the rotation angle position of the rising layer when the winding layer starts from the rising layer.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS.

First, FIG. 1 is a schematic configuration diagram of a winding device used in a winding method according to an embodiment of the present invention.
In FIG. 1, reference numeral 1 denotes a winding drum, 2 denotes a flange portion, and 3 denotes a cable. The winding device of the present invention includes at least a winding drive unit 4 for the drum 1, a supply unit 5 for the cable 3, a distance sensor 6, and a calculation unit 7. There is a part 8.

The distance sensor 6 measures the distance to the cable 3 wound on the drum 1 following the winding advance, and detects the winding height of the cable 3 based on the measured distance. In the embodiment, it mainly operates as detecting means for detecting the rise of the layer of the cable 3. The distance sensor 6
For example, it can be constituted by an optical sensor. The calculating means 7 calculates data on the winding position of the cable 3 based on data such as the diameter of the cable 3. The traverse control unit 8 receives a detection signal from the distance sensor 6 and controls the traverse of the cable 3.
Under the control of the traverse control unit 8, the traverse is performed in the ranges β ₁ and β _{2 in} which the angle at which the layer rises is the traverse end angle.

Next, a winding method in the above winding device will be described with reference to FIG. FIG. 2 is a flowchart showing the winding method.

(A) Step before winding.

Steps S1 and S2 are steps before starting winding.

In step S1, data of the diameter D of the cable 3 to be wound and the inner width Wi between the flanges 2 and 2 of the drum 1 are input. As for the cable diameter D, a standard specification dimension may be input, but the inner width Wi is measured by a sensor such as an ultrasonic sensor and the data is input.
Since the drum 1 is made of wood and its inner width Wi has an error depending on the angle, the drum 1 may be measured at a plurality of positions in the circumferential direction and the minimum value or the average value may be input. Also,
The distance to the outer peripheral surface of the drum 1 is detected by the distance sensor 6, and the data is input.

In this winding method, the end gap L between the last turn and the flange 2 is provided on the winding end side of each winding layer.
G is formed in order to make the height of the winding start turn in the next winding layer the same as the other turns.

Now, as shown in FIG. 3, it is assumed that the turns of the next winding layer are stacked and aligned at the same height on the lower winding layer, and the end gap LG is calculated. In FIG.
Is an intermediate gap between the cables 3 and 3 in the same winding layer, and Pi is a traverse pitch.

According to the cosine theorem, cos θ = {(B ² + C ² −A ² ) / 2 · B · C} in the triangle of three sides ABC connecting the centers of the three turns of the cable near the flange 2. (1) holds. Since A = D, B = D and C = D + α, cos θ = (D + α) / 2 · D (2)

Here, the terminating gap LG is also the amount of displacement in the drum axis direction of the winding start turn of the upper winding layer with respect to the winding end turn of the lower winding layer, so that LG = Bcos θ = Dcos θ (3) Here, the value of cos θ includes the value of the undetermined intermediate gap α. The intermediate gap α is assumed to be negligibly smaller than the cable diameter D, and if α ≒ 0, the triangle of ABC becomes In the equilateral triangle of D, θ ≒ 60 °, cos θ ≒ 1
/ 2. Therefore, it is possible to approximate LG ≒ D / 2 (4).

Next, the number of turns NR in each winding layer is calculated as follows. That is, as shown in Expression (5), the effective inner width Wu is obtained by subtracting the terminal gap LG from the drum inner width Wi.
Is obtained, the effective inner width Wu thus obtained is divided by the cable diameter D, and the resulting value is converted to an integer, which is the number of turns NR.

NR = INT {(Wi−LG) / D} (5) Further, in the above calculation, since the intermediate gap α ≒ 0, the traverse pitch Pi becomes equal to the cable diameter D in that case. Assuming that these values are accurately obtained, the traverse pitch Pi becomes Pi = (Wi−LG) / NR (6) as shown in Expression (6), and the intermediate gap α is α = Pi−D (7)

(B) Winding step.

The steps following step S3 are winding steps.

When the data required for winding in step S2 is calculated, a step S3 is performed based on the data.
To start winding. In this case, the direction of the direction of traverse, thus winding proceeds in the first winding layer, and the start angle and scope beta ₁ of the traverse is previously set as an initial condition.

In step S4, it is determined whether or not winding has been performed up to the required number of turns NR in each winding layer, and winding is continued until winding has been completed up to the required number of turns NR. When it is detected in step 4 that the winding of each layer has been completed to the required number of turns NR, the process proceeds to step S5.

In step 5, it is determined whether or not the number of winding layers has reached the predetermined number of winding layers. If it is determined that the number of winding layers has reached the predetermined number of winding layers, the process proceeds to step 6 to stop winding. Then, a series of winding operations ends.

On the other hand, if it is determined in step 5 that the number of winding layers is not the predetermined number, the number of winding layers is counted up by one and the process proceeds to step 7.

Step S7 is a step of performing a traverse in a predetermined angle range for each turn. Top Volume 1 layer, performs the traverse from the angle of the initial setting by a predetermined range beta _1, a range in which the traverse is performed in the second and subsequent winding layers, which as described below, occurs in its winding end side The traverse start angle is set in a later step.

In step S8, in parallel with the traverse process started in step 7, the distance from the distance sensor 6 to each turn is measured by the distance sensor 6 to detect the winding height of the cable 3.

Here, the distance from the sensor 6 to the first winding layer is a value obtained by subtracting the cable diameter D from the distance from the outer peripheral surface of the drum 1. In the second winding layer, the cable 3 is stacked in such a manner that the cable 3 partially fits in the intermediate gap α or the terminal gap LG between the turns of the first winding layer. height H ₂ of the cable diameter D is the height of the first winding layer, the cable 3 of the second winding layer
Of plus the stack height, speaking with reference to FIG. 3, the _{H 2 = D + B · sinθ} = D + D · sinθ ............ (8). Therefore, the distance from the sensor 6 to the second winding layer is a value obtained by subtracting D · sin θ from the distance to the first winding layer. In this case, the intermediate gap α between the turns is assumed to be negligibly small compared to the cable diameter D, and α
If ≒ 0, the triangle of ABC becomes an equilateral triangle of each side D, so that approximate calculation can be made as sin θ ≒ sin 60 °.

The winding height is measured as described above, and the layer rising portion E on the winding end side of each winding layer is detected from the winding height. The layer rising portion E does not always occur in a fixed traverse rotation angle range as described in the related art.

In the next step S9, it is determined whether or not a layer rising portion E occurs at the winding end side of the winding layer, and the winding height measurement in step S8 is continued until the layer rising portion E occurs. . On the other hand, in step 9, the layer rising portion E
When it is determined that the traverse has occurred, the process proceeds to step S10. In the winding layer starting from the rising portion E, the traverse start angle position is set so that the traverse ends at the rotation angle position where the rising layer E was located. Is changed to set a new traverse range β ₂ , the direction of the traverse is switched, and the process returns to step S3 to start winding on the next winding layer.

It should be noted that there may be a case where the rise of the layer does not occur according to the calculation result in step 2 because the drum 1 has some shape defect or the like. As a result, the rise of the layer cannot be detected in step 9. In this case, it is possible to take measures such as forcibly starting the winding of the next winding layer, starting from the time when it is determined that the layer up cannot be detected.

Thus, in the upper winding layer starting from the rising portion E, the traverse is performed so as to avoid the rising portion E, and the winding height of the cable 3 at the rising portion E Does not become higher or lower than the other turns belonging to the same winding layer, and the winding height is made uniform over the entire width of the drum inner width Wi.

[0041]

According to the present invention, the range of the traverse is set based on the rotation angle position at which the rising of the layer occurs. A traverse will be performed, and as in the past, the layer rise and the range of the traverse are shifted,
The next turn of the cable does not climb on the ascending part or a recess is formed in front of the ascending part, and the height of the ascending part is adjusted to the same height as other turns of the same winding layer In addition, the winding height becomes uniform over the entire width of the inside of the drum, so that the winding is not disturbed near the portion where the layer rises.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a winding device used in a winding method according to an embodiment of the present invention.

FIG. 2 is a flowchart of a winding method according to an embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view of an ascending portion for explaining the method.

4A and 4B are diagrams showing a state before a layer is raised by a conventional winding method, wherein FIG. 4A is a plan view of a drum, and FIG. 4B is a cross-sectional view taken along the axis of the drum.

5A and 5B are diagrams showing a state after a layer is raised by a conventional winding method, wherein FIG. 5A is a plan view of a drum, and FIG. 5B is a cross-sectional view along the axis of the drum.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Winding drum 2 Flange 3 Cable 6 Distance sensor (detection means) 7 Calculation means 8 Traverse control part D Drum diameter Wi Drum inner width LG Terminal gap α Intermediate gap Pi Traverse pitch β ₁ , β ₂ Traverse range

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Nagasada Shinsada 4-chome, Ikejiri, Itami-shi, Hyogo Mitsubishi Cable Industry Co., Ltd. Itami Works (72) Inventor Tadayoshi Koike 4-3-1, Ikejiri, Itami-shi, Hyogo Mitsubishi Electric Wire F-term (reference) in Itami Works 2H038 CA35 3F056 CA01 CA05 CB03

Claims (2)

[Claims] 1. A winding method for winding a cable in multiple layers on a winding drum by inching traverse winding, wherein a value of an inner width between both flange portions of the drum and a diameter of the cable is used.
Calculating the traverse pitch of the cable in each winding layer, and the terminal gap between the last turn and the drum flange at the winding end side of the winding layer; and starting winding of the second and subsequent winding layers of the cable. Detecting a rise in the cable layer, and performing a traverse on the winding layer starting from the rise with reference to the rotational angle position of the rise. 2. A winding device for winding a cable in multiple layers on a winding drum by inching traverse winding, wherein a value of an inner width between both flange portions of the drum and a value of a diameter of the cable is obtained.
Calculating means for calculating the traverse pitch of the cable in each winding layer and the terminal gap between the last turn and the drum flange at the winding end side of the winding layer; and starting winding of the second and subsequent winding layers of the cable. Winding means for detecting the rise of a cable layer, and a traverse control section for performing a traverse on the basis of the rotation angle position of the rise layer when the winding layer starts from the above layer rise. apparatus.