JPH08217330A - 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. In addition, the collar b based on the winding pressure caused by winding the wire
Pre-compute the spread of. 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. The spread of the collar b is obtained as a bending amount of the cantilever, assuming that the winding pressure is applied to the collar b by a uniformly distributed load of the cantilever.

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, even if the traverse detection position is adjusted to the winding width of the bobbin B first, the inner width dimension of the collar of the bobbin B is not constant due to the deformation of the collar b, the variation at the time of manufacturing the bobbin B, and the like. With the winding, the initial traverse width and the actually required traverse width do not match, and the traverse end of the filament a wound on the bobbin B is dented or excessively traversed due to lack of traverse. As a result, winding defects such as swelling occur.

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]

In any of the techniques described in the above-mentioned publications 1 to 5, the deformation of the bobbin B, the variation in dimensions, etc. are detected, and the traverse speed or width is adjusted afterwards to cause winding failure. To improve. At this time, since the deformation / variation is intermittent, it is easy to detect it,
Even if there is some time lag in the base, there is little trouble.
This is because, because it is intermittent, there is time until the detection of the next deformation / variation, and there is a fight during that time.

However, in addition to bobbin deformation and dimensional variation, as shown in FIG. 9, the winding failure is caused by the winding pressure applied to the flange b, which causes the flange b to warp and spread outward, in addition to the deformation of the bobbin. , In some cases, the initial traverse width does not match the actually required traverse width.
Since the gap between the collars b and b changes continuously due to the warp of the collar b, the above-described detection of the winding speed and the detection of the winding height cause a continuous change in the amount of detection and the winding amount. It is difficult to detect as a defect, and after a certain period of time, the change occurs largely due to the collapse of the winding layer. For this reason, the support due to the detection of the winding speed, etc. will detect the large change and support it.Because of the large change, the support cannot be completed and the time lag of the support is also added to the winding. Defects may become permanent.

Under the above circumstances, it is an object of the present invention to improve the winding failure due to the above winding pressure.

[0012]

In order to solve the above-mentioned problems, in the invention according to claim 1, the winding body is wound around the winding bobbin while traversing the winding bobbin in the axial direction thereof. The traverse width is widened in accordance with the spread of the bobbin collar by the winding pressure due to the change in the winding amount of the filament body on the take-up bobbin.

Further, in the invention according to claim 2,
The means for controlling the traverse reversal position determining means is provided in accordance with the bobbin collar on the outer peripheral surface of the winding layer of the filament body of the winding bobbin.

[0014]

In the invention thus constructed, the traverse reversal position is continuously adjusted according to the spread of the collar due to the winding pressure, so that the occurrence of the depression due to the insufficient traverse in the vicinity of the collar can be suppressed as much as possible.

[0015]

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 guide rollers 1 and 3 are provided with rotary encoders 1a and 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 is used.
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 a controller 8 and when the detection value of the latter (winding speed v ₂ ) fluctuates with respect to the detection value of the former (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 having 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 by ± 40 to 50% during normal operation.

When the speed difference is detected, the control means controls the motor 4c during the traverse stroke (movement from one flange b to the other flange b) at the time of detection.
The correction control is performed during the traverse stroke after the reversal (movement from the other collar b to the one collar b) without performing the control described above. The winding speed v ₂ near the collar b is detected by the collar b.
From a predetermined distance, for example, if the wire a has a diameter of 0.5 mm
It is about mm. The predetermined distance q is set by the number of rotations of the screw shaft 4d, for example.

Next, the control corresponding to the spread of the take-up bobbin B of the take-up bobbin B due to the winding pressure (spread between the bobbin case b of the outer peripheral surface of the winding layer), which is a feature of the present invention, will be described. First, as shown in FIG. 4, four points (P1 to P
In 4), when the bobbin B having a flange diameter of 500 mm was compared with the distance (width) between the collars b and b in the empty winding and the distance between the collars b and b in the fully wound state, it was found that it was 0.
There was a difference of 3 mm to 2.0 mm. For this reason, when the number of turns is full, the distance between the collars b and b is 0.5 when the distance between them is 2 mm
In the case of an electric wire having a diameter of mm, a gap of about 4 will be generated. For this reason, each type of product
Grasp the degree of flexure of the collar b of the winding bobbin B for each size,
Depending on the degree of this deflection (depending on the winding amount), the controller 8 causes the sensors 5a and 5b to pass through the motors 6a and 6b.
(5c, 5d) is moved to the outside. 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. 5, the winding pressure is assumed to be applied to the collar b by the uniformly distributed load w of the cantilever, and the amount of deflection of the collar b may be 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, this value is substituted into the equation to find the value of w / El, and the deflection curve is drawn by substituting that value into the equation, as shown in FIG.
As shown in (b), based on this curve, the sensors 5a, 5b (5c, 5d) are moved according to the winding amount (winding height). The winding amount is detected by the winding length of the scale. The spread of the brim b is corrected at a required radial interval, for example, 15 points (position data 0 to 14). The procedure of the correction control is shown in FIG.

That is, first, by the operation display device 9,
The type and size of the electric wire a to be wound in this winding device is preset and registered, and from this, the type and size of the electric wire a to be wound up is selected and the traverse width of the winding bobbin B set. Turn sensor 5
The positions a and b (position data 0) are set and registered. The "position data 0" is obtained by pressing the winding bobbin B with the cone C,
The outer peripheral collar b of the bobbin B when set between C and
It is a traverse width corresponding to the width between b (initial traverse amount), and is obtained in advance by experiments, actual operations, and the like.

Next, in the controller 8, the moving amount is calculated by the above equation to obtain the corrected moving 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 fully wound, the feeding of the electric wire a is switched to the other winding bobbin B. At this time,
The deviation of the center position between the collars b, b of both bobbins B when the winding bobbin is mounted is measured in advance, and the traverse width (position data 0) that matches 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 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 same model as this embodiment (winding device)
Then, according to a comparative example in which the winding speed v ₂ near the collar is controlled and the sensors 5a and 5b based on the deflection of the collar b are not automatically controlled but manually controlled, the winding reference when the electric wire a is wound. The difference between the height and the actual winding height is shown in Fig. 7 (a) and (b).
Shown in (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. In the figure, the error 20 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.

In the embodiment, a winding defect due to a winding depression or a bulge at the flange b is taken into consideration, and the feeding speed v ₁ and the winding speed v
It was carried out by controlling the traverse speed so that ₂ would match, but as described in each of the above-mentioned publications, "the winding speed in the vicinity of the bobbin collar and the winding speed of other parts were compared, and the two match. Adjust the traverse reversal position so that
"Compare the winding speed near the bobbin collar and the winding speed of other parts and adjust the traverse speed so that they match each other.""Detect the winding height near the bobbin collar and use this detected value. Based on this, so that the winding height is the same over the entire width,
It goes without saying that the control based on the winding pressure according to the present invention can be performed in combination with a known means such as "adjusting the traverse width".

[0028]

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 side view of the winding bobbin.

FIG. 5 is an operation explanatory view of the same embodiment.

FIG. 6 is an operation explanatory view of the same embodiment.

FIG. 7: Error diagram of winding height

FIG. 8 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 Traverser position detector (sensor) 6, 6a, 6b Stepping motor 7 Guide shaft 7a, 7b Screw shaft 8 Controller 9 Operation indicator

Claims (2)

[Claims] 1. The winding bobbin B when the filament a is wound around the winding bobbin B while traversing in the axial direction thereof.
A method for winding a filament, 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 amount of filament winding. 2. A winding bobbin B is provided with a traverser roller 4a traversing along its axial direction, and the traverser roller 4a is provided with reversal position determining means 5a, 5b for the traverse. The take-up device is provided with a means 8 for controlling the traverse reversal position determining means 5a, 5b 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 winding device for a linear body characterized by