JPH08217331A - Method and device for winding wire - Google Patents

Abstract

(57) [Summary] [Purpose] To eliminate winding defects near the collar. [Structure] An electric wire a is wound around a bobbin B via a guide roller 1, an accumulator dancer roller 2, a guide roller 3 and a traverser 4. The encoder 1a provided with the roller 1 detects the feed speed v ₁ and the encoder 3a provided with the roller 3 detects the winding speed v ₂ . In the winding near the collar, the traverse speed is controlled so that v ₁ = v ₂ . This control is highly accurate because v ₁ is constant. Further, the spread of the brim based on the winding pressure due to the winding of the electric wire is calculated in advance. Based on this calculation, the traverser position detectors 5a and 5b are moved outward in accordance with the winding height, and the traverse width is made to correspond to the spread of the collar b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of winding a filament and an apparatus for winding a filament such as an electric wire or a cable, which improves a winding failure near the bobbin collar.

[0002]

2. Description of the Related Art As an apparatus for winding a filament such as an electric wire / cable around a bobbin, referring to FIG. 1 showing an embodiment of the present invention, for example, an electric wire from an outer extrusion molding machine can be used. The cable (filament a) passes through the guide roller 1, the accumulator dancer roller 2, the guide roller 3 and then the traverser 4
The traverser 4 is guided by the (traverser roller 4a), traverses in the axial direction of the take-up bobbin B, and the filament a is wound on the take-up bobbin B in a traverse manner.

At this time, the traverse width is the bobbin B
It is necessary to match the winding width of. For this reason, traverse position detectors 5a and 5b (generic symbol: 5) are respectively provided facing both the collars b of the bobbin B, and when the traverse position detector 5 detects the traverser 4, the traverser is detected by the detection signal. 4 returns at both the collars b (winding width ends) of the bobbin B to match the traverse width with the winding width of the bobbin B. The position of the traverse position detector 5 is moved and adjusted by the drive motors 6a and 6b.

However, the inner width of the collar of the bobbin B is
Deformation of the collar b and variation of dimensions when manufacturing the bobbin B,
Further, as shown in FIG. 11, as the filament body a is wound, the brim b warps outward due to the winding pressure applied to the brim b. Therefore, even if the traverse detection position is adjusted to the winding width of the bobbin B first, the initial traverse width and the actually required traverse width do not match with the winding, and the line wound on the bobbin B is not matched. At the traverse end of the body a, the traverse end is dented due to insufficient traverse, or the traverse end is raised due to excessive traverse, and winding failure occurs.

When the winding failure occurs in this manner, when the filament a is pulled out from the bobbin B in the next step, the filament a near the depression falls into the depression or the raised portion slides to a lower portion. It falls and overlaps the filament a to be pulled out, the filament a breaks, and in the case of the electric wire / cable a, the outer insulation of the filament a is damaged.

As a means for solving this problem, a person constantly monitors the winding state of the bobbin B, and when the winding state near the bobbin collar b becomes worse as described above, the traverse position detector 5 is activated. It is conceivable that the traverse amount is moved to change the traverse amount to a normal winding state, but since this means is performed by a person, work efficiency is poor and there is a problem in cost.

Therefore, as a technique for automatically improving the winding failure near the bobbin collar b, there is disclosed in Japanese Patent Laid-Open No. 61-243773.
Japanese Unexamined Patent Publication (JP-A) No. Hei 2-193870 (Gazette 2), Japanese Unexamined Patent Publication No. 1-308362 (Gazette 3), Japanese Unexamined Patent Publication No. 1-308363 (Gazette 4), Japanese Unexamined Patent Publication No. 6-115810. There is one described in the gazette (Gazette 5).

In the technique described in the publication 1, the winding speed near the bobbin collar is compared with the winding speed of the other portion (central portion), and the traverse reversal position is adjusted so that the two match. Similarly, in the technique described in Japanese Patent Laid-Open No. 2004-242242, the winding speed near the bobbin collar is compared with the winding speed of other portions, and the traverse speed is adjusted so that the two match. In addition, the techniques described in the publications 3 to 5 detect the winding height near the bobbin collar, and adjust the traverse width based on the detected value so that the winding height is the same over the entire width. .

[0009]

The techniques described in the above publications 1 and 2 are based on the winding speed (winding speed) of the central portion of the bobbin cylinder. The winding speed of the central portion is the winding amount. And bobbin B so that the winding speed is constant.
Even if it controls the rotation speed of, it is difficult to obtain a constant speed depending on the winding degree. Therefore, the technologies described in the publications 1 and 2 which control the winding amount in the vicinity of the collar on the basis of the winding speed in the central portion, where it is difficult to obtain a constant speed, have a problem in accuracy, and a winding defect in the vicinity of the collar is sufficient. Not improved.

In the techniques described in the above-mentioned publications 3 to 5, the winding height is directly detected by an ultrasonic sensor, a video camera, an optical sensor, and the accuracy can be sufficiently obtained due to the bobbin swinging or the like. There is no problem.

Further, from the aspect of downsizing of the winding equipment,
As shown in FIG. 12, in many cases, the linear body a is wound around a plurality of winding bobbins B arranged in parallel by one traverser 4 (see FIG. 1). At this time, the position of the presser cone C that supports the bobbin B is adjusted so that the centers c of both bobbins B are aligned.

However, the centers c of the bobbins B may deviate due to wear of the rubber pad d of the presser cone C, pressure fluctuation of the presser cylinder, and the like. In this case, if the traverse width is set to be constant on the one bobbin B side, in winding the other bobbin B, winding defects near the brim b are more likely to occur.

Under the above circumstances, the present invention has as its first object to improve the winding defect in the vicinity of the collar more than ever before.
A second problem is to further improve the winding defect in the vicinity of the collar even when the bobbins are wound in parallel by one traverser.

[0014]

In order to solve the above-mentioned first problem, in the invention according to claim 1, the filamentous body is fed into the accumulation dancer roller at a constant speed, and then the guide roller is interposed. To the traverser roller and traverse the traverser roller in the axial direction of the take-up bobbin to wind the filament body around the take-up bobbin, the filament body from the traverser roller to the take-up bobbin While controlling the number of rotations of the winding bobbin so that the winding speed of the winding bobbin becomes a constant feeding speed to the accumulation dancer roller, in the vicinity of the flange of the winding bobbin, the winding speed becomes the feeding speed. The traverse speed of the traverser roller is controlled so as to achieve the above.

In the invention according to claim 2, an accumulator dancer roller into which the filament is fed at a constant speed, and the filament is guided from the accumulator dancer roller,
A device for winding a filament, which comprises a traverser roller that traverses the filament and winds it on a winding bobbin, and a detector for detecting the winding speed of the filament from the traverser roller to the winding bobbin. Based on the detection signal of this detector, while providing a controller for controlling the number of revolutions of the winding bobbin so that the feeding speed of the filament to the accumulation dancer roller and the winding speed match. In the vicinity of the flange of the winding bobbin, a controller is provided to control the traverse speed of the traverser roller so that the winding speed becomes the feeding speed.

According to the invention of claim 3, claim 1
In the invention described above, the traverse width is widened in accordance with the spread of the bobbin collar due to the winding pressure caused by the change in the winding amount of the filament body around the winding bobbin (claim 3).

According to a fourth aspect of the invention, in the second aspect of the invention, the traverse reversal position determining means is aligned with the bobbin collar on the outer peripheral surface of the winding layer of the filament body of the winding bobbin. That is, the configuration is provided with a means for controlling.

In order to solve the second problem, in the invention described in claim 5, in the winding method of the linear member, a plurality of winding bobbins arranged in parallel by one traverser roller are provided. When the linear body is wound, the reverse position of the traverser roller is controlled in accordance with the position change of the bobbin collar of each winding bobbin.

According to a sixth aspect of the present invention, in the above-described filament winding device, a plurality of winding bobbins are arranged side by side, and each of the winding bobbins is provided with a single traverser roller. In the winding device for winding the body, means for adjusting the reversal position of the traverser roller is provided in accordance with the position change of the bobbin collar of each winding bobbin.

[0020]

In the present invention thus constituted, the traverse speed is controlled so that the winding speed becomes constant on the basis of the constant line speed such as the feeding speed from the extrusion molding machine. Therefore, the control accuracy is high. At this time, if the traverse reversal position is adjusted in accordance with the spread of the collar due to the winding pressure, the occurrence of depression due to insufficient traverse near the collar can be suppressed as much as possible.

According to the fifth and sixth aspects of the invention, since the traverse area is adjusted according to the variation between the collars of the bobbin,
The winding action does not include the winding action from the beginning of winding, such as inconvenience that the two traverses and the traverse reversal position are misaligned, a depression is formed near one collar, and a bulge is generated near the other collar. Hard to happen.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment is shown in FIGS. 1 to 3, for example, an electric wire a (for example, 0.4 to 2) coated with insulation from an extruder.
(mm diameter) is fed to the accumulation dancer roller 2 via the guide roller 1. The electric wire a is guided from the accumulation dancer roller 2 to the roller 4a of the traverser 4 via the guide roller 3, and the traverser roller 4a
Bobbin B (for example, collar b diameter:
The electric wire a is wound around (500 mm).

The two guide rollers 1, 3 are provided with rotary encoders 1a, 3a, respectively. The former rotary encoder 1a allows the speed v _{1 of the} electric wire a sent to the accumulation dancer roller 2, that is, the line speed v.
₁ is detected, and the latter rotary encoder 3a detects the winding speed v ₂ on the bobbin B. The winding bobbin B calculates the winding speed v _{1 from} the line speed v ₁ based on both detection values.
The rotation speed is controlled so that the _two match (v ₁ = v ₂ ). This control is performed by the slip between the drive shaft and the bobbin B via the coupling and / or the rotation speed control of the drive machine by the controller 8 based on the tension of the electric wire a.
It should be noted that the rotation speed control of the bobbin B does not respond to a sudden change in the winding speed v ₂ due to a bulge near the collar b or a depression. This is because if a response is given, inconvenience will occur rather than the winding degree of the central portion.

In the traverser 4, the guide shaft 4b is guided by the roller 4a and the screw shaft 4 driven by the pulse motor 4c.
The rotation of d causes the roller 4a to traverse in the axial direction of the bobbin B, and the electric wire a is wound around the bobbin B. The motor 4c may be a servo motor. A guide shaft 7 of a traverser position detector (for example, a sensor such as a proximity switch) 5a, 5b (general reference numeral 5) is provided along the guide shaft 4b of the traverse 4. The sensors 5a, 5b are stepping motors 6a. , 6b (general reference numeral 6) rotate the screw shafts 7a, 7b to move the bobbin B
Move in the axial direction of. It is assumed that the motor 6 is provided with a brake so that the positional deviation does not occur during stoppage such as power failure.

The rotary encoders 1a, 3a are connected to the controller 8 and when the latter detection value (winding speed v ₂ ) fluctuates with respect to the former detection value (line speed v ₁ ), that is, near the collar b. Then, when a depression or a bulge occurs, the controller 8 controls the motor 4c to adjust the traverse speed. At this time, the difference between the two speeds v ₁ and v ₂ is displayed, and if the winding speed v ₂ becomes faster, this is the case where swelling occurs, and the traverse speed is made faster, and conversely, the winding speed v ₂ is made slower. In that case, a depression occurs, and the traverse speed is reduced. This control is performed when the speed difference exceeds a certain level, and its reference level is
It may be set appropriately according to actual operation or experiment, but 0.
In the case of an electric wire with a diameter of 5 mm, correction control is performed with a height difference of 1.5 mm or more, and the traverse speed movement width is increased or decreased within a range of ± 40 to 50% during normal operation.

The correction control is performed as shown in FIGS. 4a and 4b, for example. That is, when the winding device for the electric wire a is “started” as shown in FIG. 11A, the following conditions S1 and S2 are first checked (a “Detection condition OK in FIG.
? (S1) is for checking whether or not winding is performed (whether there is no start loss) because the outer diameter of the winding layer changes depending on the type and size of the electric wire a. , (S2), when the bobbin B is switched, immediately after that, the cut electric wire a cannot be held by the bobbin B by the body and the winding state is not stable in many cases. because it is to (S1):. normal operating speed × 1/2 or more or the winding speed v ₂ (S2):? or Blank Article length × 1/15 m or more winding has been completed?

Next, if the "detection condition" is OK, the correction control is started ("detection start" in FIG. 6A), and (1) to (11) in FIG. In accordance with the traveling of the traverser 4 (indicated), the following steps (1) to (11)
The detection and control indicated by are performed. (1) Measurement of rightward traverse width time T1 (2) Measurement of leftward traverse width time T2 and measurement time t ₁ of 10 mm (q) on the right side (T1 × q / bobbin collar width L (230 mm)) (3 ) with rightward traverse width time T3 measured, together with the left Tsubagiwa 10 mm (measuring time t ₂ the calculation of q) (T2 × q / L ) (4) leftward traverse width time T4 measurement, the t
Simultaneously with v _1, v ₂ speed measurement and compare P ₁ between _1, together with the measurement time t ₃ calculated (T3 × q / L) ( 5) rightward traverse width time T5 measurement of right Tsubagiwa q, the t
Simultaneously with v _1, v ₂ speed measurement and compare P ₂ between the _two measurement time t ₄ the calculation of the left Tsubagiwa q (T4 × q / L) (6) v 1 between right Tsubagiwa q, v ₂ comparison value Traverse speed control based on P ₁ (7) Traverse speed control based on v ₁ and v ₂ comparison value P ₂ between left edge q (8) Left traverse width time T6
V ₁ and v ₂ speed measurement and comparison between ₃ and P _{3 and} at the same time right edge q
Calculation of measurement time t ₅ (T4 × q / L) (9) Rightward traverse width time T7
₄ v ₁ and v ₂ speed measurement / comparison P _{4 and} right edge q
Calculation of measurement time t ₆ (T5 × q / L) (10) Traverse speed control based on v ₁ and v ₂ comparison value P3 between right edge q (11) v ₁ and v between left edge q ₂ Traverse speed control based on the comparison value P4 Thereafter, (8) to (11) are repeated.

The predetermined distance q was 10 mm because the wire a was 0.5 mm, but it may be set to an appropriate value depending on the type of the wire a. In addition to the above, the required time t _{1 for the} distance q may be measured at the number of revolutions of the screw shaft 4d and its speed, and as shown in FIG.
The traverse time may be set by the sensors 5c and 5d that detect the end and the traverse time between the sensors 5a and 5c or between 5b and 5d. At this time, the sensors 5a and 5c, 5b and 5d move at equal intervals. Of course, each sensor 5a
You may make it independently move 5d.

Further, in this embodiment, the traverse width is controlled corresponding to the spread of the collar b of the winding bobbin B due to the winding pressure (width of the bobbin collar b on the outer peripheral surface of the winding layer). The control will be described. First, as shown in FIG. 6, at four points (P1 to P4) of the collar b, the collar diameter 500
The distance (width) between the collars b and b when the bobbin B having a diameter of 10 mm was empty and the distance between the collars b and b when the coil was fully wound were compared. There was a difference of 3 mm to 2.0 mm. For this reason, if the distance between the collars b and b increases by 2 mm when fully wound, a gap of about 4 wires will be generated if the wire has a diameter of 0.5 mm. Therefore, in experiments, actual operations, etc., the degree of bending of the collar b of the take-up bobbin B for each product type and size is grasped, and the controller 8 is used in accordance with the degree of bending (in accordance with the winding amount). The sensors 5a, 5b (5c, 5d) are moved to the outside via the motors 6a, 6b. That is, when the winding is full, the sensor 5 is moved outward by 1 mm.

The actual measurement of the bending of the collar b is very complicated and there is a problem in terms of accuracy. For this reason, as shown in FIG. 7, it is preferable that the winding pressure is applied to the collar b with a uniformly distributed load w of the cantilever, and the amount of deflection of the collar b is calculated from the calculated value.
The deflection y is given by the following formula. y = w / 24EI · (x ⁴ -4l ³ x + 3l ⁴ ) ... E: longitudinal elastic modulus of the collar b, I: second moment of area of the collar b, l: distance from the outer circumference of the body to the full winding.

For a certain bobbin B, W,
Since E, I, and l are constant, for example, the deflection y at full winding
Is set to 1 mm, the value of W / E1 is obtained by substituting this into the above equation, and conversely, when the deflection curve is drawn by substituting that value into the equation, it becomes as shown in FIG. 7 (b). The sensors 5a and 5b (5c, 5c,
Move 5d). The winding amount is detected by the winding length of the scale. With respect to the spread of the collar b, a required radial interval, for example, 15 points (position data 0 to 14)
Correct with. The procedure of the correction control is shown in FIG.

That is, first, by the operation display unit 9,
The type and size of the electric wire a to be wound in the winding device is preset and registered, and from that, the type and size of the electric wire a to be wound are selected, and the traverse of the set winding bobbin B is performed. The positions (position data 0) of the turn sensors 5a and 5b are set and registered in the width. The “position data 0” is obtained by the procedure shown in FIG.

Next, in the controller 8, the movement amount is calculated by the above equation to obtain the corrected movement amount for each interval (15 steps) of the moving length. This movement amount (position data 1 to 1
On the basis of 4), the correction (movement to the position data 0 to 14) for moving the sensors 5a and 5b according to the winding length (according to the winding pressure) is performed at the time of the start of winding, and at the time of the collar b. Eliminate winding defects.

When the winding bobbin B is full, the feeding of the electric wire a is switched to the other winding bobbin B. At this time,
The deviation of the center c position between the collars b and b of both bobbins B when the take-up bobbin is mounted is measured in advance, and the traverse width (position data 0) suitable for the bobbin B is set based on the deviation, and then , Shift to the normal winding action. By this action, even if the winding bobbin B is switched,
The center c of the traverse width coincides with the center line between the collars b, b of the bobbin B, and the winding defect near the collar b due to the center deviation is prevented. The deviation is measured by the procedure shown in FIG.

Same model as this embodiment (winding device)
Then, according to a comparative example in which the winding speed v ₂ near the collar and the sensors 5a and 5b based on the deflection of the collar b are not automatically controlled but are controlled manually, the winding reference when the electric wire a is wound. The difference between the height and the actual winding height is shown in FIGS. 9 (a) and 9 (b). (A) is an example, (b) is a comparative example, ◯ is the difference in height near the left collar b, and □ is the difference in height near the right collar b.
The error 20 in the figure corresponds to an actual error of 0.714 mm.
From this figure, it can be understood that in the embodiment, the difference is close to "0" and the fluctuation is small, that is, the good winding state is obtained.

FIG. 10 shows the rubber pad d of the presser cone C.
When the center c of the bobbin B is displaced due to wear, the measuring means moves the ruler S with respect to the base W to measure the distance from the reference point O of both the collar b or the pad d. Then, the measured value is compared with the reference value to detect a deviation due to wear of the pad d, and the data of the controller 8 is changed based on the detected value. For example, if the wear is 1 mm, a change input for shifting the position of "position data 0" by the operation display 9 to the wear side by 1 mm is performed. This change is, for example,
Semi-annually or annually.

[0037]

Since the present invention is constructed as described above,
It is possible to minimize winding defects near the collar.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment.

FIG. 2 is a schematic front view of the embodiment.

FIG. 3 is a schematic explanatory view of the operation of the embodiment.

FIG. 4 is a diagram illustrating the operation of the embodiment.

FIG. 5 is a schematic explanatory view of the operation of another embodiment.

FIG. 6 is a side view of the winding bobbin.

FIG. 7 is an operation explanatory diagram.

FIG. 8 is an explanatory view of the operation of the same embodiment.

FIG. 9: Error diagram of winding height

FIG. 10 is a front view of an example of a winding bobbin collar position detecting device.

FIG. 11 is an operation explanatory diagram.

FIG. 12 is an operation explanatory diagram

[Explanation of symbols]

B Rewind bobbin C Presser cone a Electric wire (Linear body) b Bobbin collar c Bobbin center s Ruler 1 Guide roller 1a Rotary encoder 2 Accumulation dancer roller 3 Guide roller 3a Rotary encoder 4 Traverser 4a Traverser roller 4b Guide shaft 4c Pulse motor 4d Screw shaft 5, 5a, 5b, 5c Traverser position detector (sensor) 6, 6a, 6b Stepping motor 7 Guide shaft 7a, 7b Screw shaft 8 Controller 9 Operation indicator

Claims (6)

[Claims] 1. The filament a is fed into the accumulator dancer roller 2 at a constant speed v ₁ and then guided to the driver roller 4a via the guide roller 3 and the traverser roller 4a is rotated by the shaft of the winding bobbin B. When the filament body a is wound around the take-up bobbin B by making a transverse direction, the winding speed v ₂ of the filament body a from the traverser roller 4a to the take-up bobbin B is set to the accumulator dancer roller 2 The rotation speed of the winding bobbin B is controlled so that the feeding speed v ₁ becomes constant, and the winding speed v ₂ becomes the feeding speed v ₁ in the vicinity of the collar b of the winding bobbin B. The traverse speed of the traverser roller 4a is controlled so as to achieve the above-mentioned method. 2. An accumulator dancer roller 2 into which the filament a is fed at a constant speed, and the filament a is guided from the accumulator dancer roller 2, and the filament a is traversed to wind a bobbin B. Traverser roller 4
and a detector 3a for winding speed v ₂ of the filament a from the traverser roller 4a to the take-up bobbin B. The detector 3a detects the detector 3a. Based on the signal, the feeding speed v ₁ of the filament a into the accumulation dancer roller 2 and the winding speed v
A controller for controlling the number of revolutions of the winding bobbin B is provided so that ₂ may coincide with each other, and in the vicinity of the collar b of the winding bobbin B, the winding speed v ₂ becomes the feeding speed v _1. A winding device for a filamentous body, characterized in that a controller 8 for controlling the traverse speed of the traverser roller 4a is provided. 3. The winding method for the filament body according to claim 1, wherein the traverse width is increased in accordance with the expansion of the bobbin collar b due to the winding pressure due to the change in the winding amount of the filament body around the winding bobbin B. A method for winding a filamentous body characterized in that 4. The winding apparatus for a filament body according to claim 2, wherein the traverse is reversed according to the width between the bobbin collars b on the outer peripheral surface of the winding layer of the filament body a of the winding bobbin B. A filament winding device, characterized in that it comprises means 8 for controlling the position determining means 5a, 5b. 5. The winding method for a filament body according to claim 1 or 3, wherein the filament body a is wound around a plurality of winding bobbins B arranged in parallel by one traverser roller 4a.
According to the position change of the bobbin collar b of each winding bobbin B,
A method of winding a filament, wherein the reverse position of the traverser roller 4a is controlled. 6. The filament winding device according to claim 2 or 4, wherein a plurality of winding bobbins B are provided side by side, and each of the winding bobbins B is provided with a single traverser roller 4a. And a means 8 for adjusting the reversal position of the traverser roller 4a in accordance with the position variation of the bobbin collar b of each of the winding bobbins B. Body winding device.