JPH037587B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for detecting winding irregularities during aligned winding in a winding machine.

(Prior art) When winding a flexible material such as wire around a winding drum,
Winding disorder may occur and aligned winding may become impossible.

Therefore, as shown in FIGS. 4 and 5, the outer peripheral surface of the spool (winding drum) 1 is provided with windings that match the alignment feed pitch in order to allow for errors in the wire diameter and positional deviation of the winding 2. A groove 3 is formed so that a linear winding 2 having a circular cross section can be wound in multiple layers.

(Problems to be Solved by the Invention) However, although the presence of the winding groove 3 almost eliminates the winding disorder in the first layer, in the second and subsequent layers, due to various reasons, the winding irregularity as shown in FIG. As shown in FIG. 5, skipping occurs, or as shown in FIG. 5, winding irregularities often occur, such as winding on the third layer even though the second layer has not been completely wound. Once such winding disorder occurs, it becomes impossible to stack subsequent windings in an aligned manner, resulting in a product in which the wires are wound in an irregular manner.

In order to solve this problem, for example,
As shown in No. 81065 and No. 57-62169, attempts have been made to detect irregular winding by constantly reading the traverse position. However, this method has a problem because it does not take into account the following phenomena specific to rewinding.

There are various methods of traversing when rewinding the wire, but basically the traverse is performed after the position at which the wire is wound. Therefore,
When the direction of wire rewinding is changed, the direction of the delay angle is reversed, resulting in extreme detection fluctuation.

Further, as shown in FIG. 6, the transfer positions (points of inflection) of the wires between each layer tend to change in a staggered manner, as shown by dotted lines in the figure, due to variations in wire diameter, etc. When the uppermost layer is re-wound, the transition occurs as shown by the dotted line in FIG. 7 (a diagram of the state in FIG. 6 viewed from the cross-sectional direction). This inflection point always exists during one turn, and it is difficult to accurately predict or control the timing of its occurrence.

For this reason, in the above detection method, the timing of wire transfer is conveniently configured such that the horizontal direction is caught by a limit switch installed on the traverse, but the timing does not necessarily match the actual wire transfer timing. Not there. Therefore, although winding disturbances near the wire transfer occur more often than in other areas, there is a drawback that it cannot be accurately detected.

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, to accurately detect winding disturbances in alignment, especially winding disturbances near wire transfers, and to enable automatic stopping of windings or automatic adjustment of winding conditions. It is an object of the present invention to provide a method for detecting alignment winding disturbances that allows adjustment and improves the quality of the wound phase body.

(Means for Solving the Problems) In order to achieve the above object, the present invention takes into consideration the phenomena inherent in winding, and geometrically calculates and compares the displacement of the wire in the horizontal direction. This is intended to detect winding irregularities, and its gist is to count the number of wire turns using a winding phase body rotation speed detector, and when a predetermined number of turns is reached,
Detection of disordered winding in aligned winding characterized by measuring the wire position during actual winding with a traverse position detector and comparing the detected wire position value with a reference value to determine whether or not winding is disordered. There is a method.

The present invention will be explained in detail below based on examples.

As described above, the present invention aims to geometrically calculate and compare the displacement of the wire in the horizontal direction, and is based on the following detection principle.

That is, as shown in Fig. 1, when there is no winding disorder in aligned winding using the grooved spool 1, the wire position in the x direction at a certain number of winding turns is the wire position of the odd layer (or even layer). is estimated to be the same as For example, if a 1.2mmφ wire is wound on a spool with a 1.2mmφ groove, the first layer N
The position x ₁ of the turn in the x direction is considered to be the same as the position of the {N+(n-1)×73 (or 74)} turn in the nth layer (odd layer). In other words, a comparison between the position x ₁ on the first layer and the position x ₂ on the 146th turn (3rd layer),
Furthermore, by comparing this with the position x ₃ of the 146th turn (5th layer), winding irregularities are detected.

When detecting winding disturbance using such a detection principle,
Counting the number of rotations of the winding phase body and determining the measurement position of the wire are important and affect detection accuracy.

That is, as described above, when the traverse changes in the horizontal direction, there are places (approximately 1 to 3 turns from the end of the winding phase) where the movement of the traverse and the movement of the wire in contact with the winding phase surface do not match. However, regarding the measurement of this location, it is difficult with the current technology to directly measure the position of the wire in contact with the winding phase surface, and the measurement must be performed indirectly by traversing. Therefore, it is necessary to measure the wire position in a stable region where the wire position and traverse maintain a constant relationship (a constant delay angle). By counting the number of traverse rotations, it becomes possible to set the measurement position in the stable area for the first time.

In addition, when winding wires in an aligned manner, wire transfers (inflection points) (see Figures 6 and 7) inevitably occur, so we try to detect geometric wire disturbances. It becomes noise in case.
The timing of the occurrence of this inflection point cannot be accurately predicted or controlled, but from experience, as shown in Figure 7, the transition of the dot-dashed line does not exist over the entire circumference, but rather there is no transition point. It is known that there is an angular region θ ₁ . Since this area is in the latter half of the time per turn, it is possible to reliably measure in this area if the wire measurement position is set slightly before the starting end stop, which is the starting point of wire transfer.

As described above, in the present invention, the horizontal position of the wire is measured by a traverse position detector, and this measurement point is compared with a reference point. Although the reference point is determined based on empirical data of normally wound wire, it is preferable to measure a plurality of wire positions using a traverse position detector and use one of the measured positions as the reference point.

Next, the manner in which the reference points and measurement points are set will be explained.

When a reference point and a measurement point are set between one layer: In this case, by comparing the horizontal distance between the reference point and the measurement point, it is possible to catch any disturbance in the winding alignment between them. Incidentally, the disturbance in the winding alignment in other regions (unstable regions) including wire transfer points cannot be caught for the reasons mentioned above.

When setting measurement points on odd-numbered layers (or even-numbered layers): There is a difference of half the wire diameter between odd-numbered and even-numbered layers, and the traverse direction is reversed, so set the measurement point and reference point on odd-numbered or even-numbered layers. It is preferable to set it in one of the layers. However, it is also possible to set the measurement point on one layer and the reference point on the other layer without distinguishing between odd and even layers, and in this case, it is necessary to consider the above-mentioned deviation by converting it. There is a possibility that noise based on the traverse direction may be introduced, so it is not a good idea, but it is possible to implement it.

In addition, in the present invention, since the wire position is not measured in real time, there is a possibility that there will be a delay in detecting winding irregularities, but in that case, by taking multiple measurement points between one layer, , it is possible to supplement the time lag as small as possible. However, in practice, there is no problem even if there is only one measurement point per layer.

Further, the arrangement and configuration of the winding phase body rotation speed detector and the traverse position detector are the same as in the conventional art, and are not particularly limited.

(Embodiment) FIG. 2 shows a schematic configuration and control block of a winding machine used in carrying out the present invention. First, the wire measurement position is set by the wire measurement position setting device 4 {R initial value (4-1), L initial value (4-1), (4-
2), Second layer turn number (4-3)} Set the number of wire turns using the digital switch 5. What is set is the number of turns in the odd layer, the number of turns in the even layer, and the number of turns in the second layer.

Next, set the traverse position at the wire measurement position using the traverse position setter 6 {right setter 6-1,
Digital switch 5 with left setting device 6-2}
Set with . The settings are for each position of odd and even layers, and the accuracy is 0.01 mm.

Note that the winding phase body rotation speed is detected by a spool rotation speed detector 7 attached to the grooved spool 1.
The traverse position is detected by a traverse position detector 9 (eg, absolute encoder, Magnescale, etc.) attached to the traverse 8.
In addition, the number of turns was detected a little before the starting end stop in order to avoid the influence of wire transfer.

Prior to the start of winding, a winding counter 10 is reset and the number of turns is counted at the same time as winding. Then, the matching circuit 11 compares the counted number of turns with the value set by the digital switch 5, and when they match, the corresponding position is read from the traverse position data 12 detected by the traverse position detector 9, and A comparator 13 compares the traverse position and the traverse position set by the digital switch 5. If the difference between the two is outside the allowable range, an abnormality signal is output and the winding is stopped. Here, the above-mentioned allowable range varies depending on the diameter of the winding wire, but for example, in the case of a wire of 1.2 mmφ, it is within the range of ±0.6 mm, and normal aligned winding is performed within this range. In addition, since line skipping is a problem when winding randomly, it is also possible to limit the range only to the + side.

Figure 3 shows the results of traverse measurements of odd-numbered layers when winding 12.5 kg with a wire diameter of 1.2 mmφ. From the figure, it can be seen that when the winding is normal, there is only slight variation in the detected values, but when there is an abnormality, there is extreme variation.
The causes of variations during normal operation are mechanical bumps in the traverse, deformation of the spool,
This is considered to be the sum total due to variations in traverse angle, etc.

(Effects of the Invention) As described in detail above, according to the present invention, it is possible to accurately detect the occurrence of winding disorder during aligned winding, especially the occurrence of winding disorder during rewinding. By applying this detection method, automation of aligned winding becomes easy, and the quality of the wound phase body can be improved.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the detection principle of the method of the present invention, Fig. 2 is a control block diagram showing the schematic configuration of the winding machine used to implement the present invention, and Fig. 3 shows the measurement results of the traverse position. Figures 4 and 5 are diagrams showing the winding disorder, Figures 6 and 7 are diagrams showing the transition of the wire transfer (point of inflection), and Figure 7 is a side sectional view of Figure 6. It is. DESCRIPTION OF SYMBOLS 1... Winding drum (spool), 2... Wire, 3... Winding groove, 4... Wire measurement position setter, 5... Digital switch, 6... Traverse position setter, 7... Winding phase body rotation speed detector, 8... Traverse, 9... Traverse position detector, 10... Rotation speed counter, 11...
Matching circuit, 13... comparator.

Claims (1)

[Claims] 1. The number of wire turns is counted by a winding phase body rotation speed detector, and when a predetermined number of turns is reached, the wire position at the time of actual winding is measured by a traverse position detector, A method for detecting disorder in aligned winding, comprising comparing the wire position detection value with a reference value to determine whether or not winding is disorderly. 2. According to claim 1, the traverse position detector measures the wire position at a plurality of locations in one layer, and compares the wire position with one value as a reference value and the other value as a detected value. the method of. 3. The method according to claim 1, wherein the wire position is measured at a turn number that is two layers away from the layer to which the reference value belongs, and the two are compared. 4. The method according to any one of claims 1 to 3, wherein the wire position is measured in a section after the traverse returns to a steady state from a change in direction. 5. The measurement of the wire position is performed in a section where wire transfer does not occur between each layer.
The method according to any one of Items 3 to 3.