JP3066949B2 - Continuous strip traverse winding system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous strip traverse winding system for reciprocating a bobbin while spirally winding a thin tape-shaped continuous strip at a uniform pitch, and more particularly to a continuous strip traverse winding system. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous traverse winding system that winds a continuous strip while correcting a winding thickening that is swelled outward in a direction.

[0002]

2. Description of the Related Art Conventionally, in a continuous strip traverse winding system, as shown in FIG. 8, a cylindrical shaft 10a and both ends thereof are attached to an end of a winding shaft 21 which can reciprocate in the axial direction while rotating. A pair of disk-shaped collar portions 10b, 10 fixed to
(b). The fixed guide roll 12 is provided adjacent to the bobbin 10 so that the continuous strip 14 is continuously supplied to the bobbin 10 at a constant speed. The proximity body 18 is fixed in the middle of the winding shaft 21 via a bracket 18a, and the proximity body 18 is provided such that a pair of proximity switches 16 and 16 sandwich the proximity body 18.
The proximity switches 16, 16 sense the approach of the proximity body 18, and this sensing signal is transmitted to a control device (not shown). Then, the control device transmits an inversion command signal to a driving source of the reciprocating motion of the winding shaft 21.

In another conventional example, as shown in FIG. 9, the reversal position of the reciprocating motion of the slide drive mechanism is controlled by the number of revolutions of a ball screw mechanism. FIG.
In, the bobbin 10 is attached to an end of the winding shaft 21. The winding shaft 21 is rotatably driven by a winding motor 20, and is rotatably and slidably supported by a slide support 23. Slide support 2
Numeral 3 is provided on a fixed bed 24 via a linear guide so as to be linearly movable in the axial direction of a take-up shaft 21. The ball screw mechanism 22 driven by a servomotor 26 controls the linear movement by position control and speed control. Have been. The master sequencer 30 monitors the number of rotations of the servomotor 26 to determine the reversal position of the reciprocating motion of the winding shaft 21, and transmits a forward rotation or reverse rotation signal to the winding control sequencer 34 via the relay 32. ing. The winding control sequencer 34
Via a relay 36, a control signal calculated to monitor the rotation speed of the winding motor 20 and synchronize the reciprocating movement speed of the winding shaft 21 with the rotation speed of the bobbin 10 and the forward rotation or reverse rotation signal are relayed. To the servo amplifier 38. The servo amplifier 38 sends the amplified drive output to the servo motor 26 under the control of the signal received from the relay 36. The reversing position of the winding shaft 21 can be manually adjusted by a reversing position adjustment button 39 connected to the master sequencer 30.

In the conventional continuous traverse winding system described above, usually, a plurality of winding devices are operated simultaneously.
The control device is a master sequencer 3 as shown in FIG.
A plurality of the same devices are arranged in parallel at the output destination of 0. Note that the configuration of each device in which a plurality of devices are arranged in parallel is the same as that of FIG. 9 described above.

[0005]

In the conventional continuous strip traverse winding system described above, as shown in FIG. 11, the continuous strip 14 is wound so as to expand by a dimension A in the axial direction of the bobbin 10. Fatness occurs. As a result, the gap B between the target brim portion 10b of the bobbin 10 and the wound continuous strip 14 becomes narrower at the outer periphery of the wound continuous strip 14 by BA. For this reason, when the winding diameter becomes large, the continuous strip 14 comes into contact with the brim portion 10b, and the edge of the continuous strip 14 is broken, and the continuous strip 14 collapses in the gap B, and winding defects occur.

[0006] In order to solve the above problem, in the above-mentioned conventional system, the gap B is set to be wide. This prevents the continuous strip 14 from contacting the brim portion 10b,
Further, the operator has operated the reversing position adjustment button 39 by visually checking the reversing position of the reciprocating bobbin 10. However, there is a disadvantage that the winding width of the continuous strip 14 is reduced due to the margin of the gap B, and the winding amount of the continuous strip that can be wound per bobbin is reduced. In addition, manual operation may cause variations or erroneous operation in the reversing position, and thus the above-described problem of winding failure cannot be completely solved.

[0007] An object of the present invention is to clarify the cause of the winding thickening, thereby automating the manual correction of the winding thickening, eliminating winding defects such as edge breakage, and further reducing the winding per unit bobbin. An object of the present invention is to provide a continuous traverse winding system capable of increasing a winding amount of a continuous strip that can be taken.

[0008]

According to a first aspect of the present invention, a plurality of continuous strips having a cylindrical shaft and a pair of disk-shaped flanges fixed to both ends thereof are provided. A continuous traverse winding system that winds each of the bobbins in a traverse, wherein each continuous strip and each bobbin that winds the same are supplied at a constant speed to the bobbin that winds the continuous strip. A guide roll,
A slide support provided slidably in the axial direction of the bobbin with respect to the fixed bed, and a winding motor fixedly supported on the slide support, the winding motor having a bobbin attached to its rotating shaft. , A slide drive mechanism with a servo motor capable of reciprocatingly rotating the slide support in the axial direction of the bobbin, and a winding for supplying a forward or reverse rotation signal to the servo motor by monitoring the rotation speed of the winding motor. In the picking control sequencer, the forward rotation or reverse rotation signal is based on a control formula set to correct the reversal position of the continuous strip that changes with an increase in the outer diameter of the continuous strip wound on the bobbin. And a take-up control sequencer configured to emit.

Further, the second preferred embodiment of the present invention
In the control formula A, L0 is the distance between the center of the guide roll and the bobbin, D1 is the outside diameter of the bobbin shaft, Dg is the outside diameter of the guide roll, and P is the traverse pitch of the continuous strip wound on the bobbin. , D is an arbitrary outer diameter of the continuous strip wound on the bobbin, A = {L0 ² − − × (D1 + Dg) ² } ^0.5 × P /
{ (Π × D1) / 2 } − ｛L0 ² −1 / 4 × (D + Dg)
² ｝ ^0.5 × P / ｛ (π × D) / 2 } , and for each of the reversal positions on both sides of the reciprocating motion of the bobbin, the reversal position at the outer diameter D is calculated from the initial reversal position of the continuous strip by the above correction formula. Inward direction of bobbin based on A
It is characterized by shifting to.

In a preferred embodiment of the present invention, the third embodiment
In the invention, the winding control sequencer also monitors the rotation of the servomotor, and supplies a signal to the servomotor via a servo amplifier.

[0011]

FIG. 1 is a plan view for explaining the operation of a bobbin winding a continuous strip. The bobbin 10 has a cylindrical shaft 10a and a pair of disk-shaped collars 10b fixed to both ends thereof. Then, the continuous strip 14 in the form of a thin tape that is continuous by rotating by a mechanism described later.
Reciprocating in the axial direction while winding up. Reference numeral 12 denotes a fixed guide roll for supplying the continuous strip 14, which is rotatably fixed to a supply-side device (not shown).

Next, the deviation of the reversal position of the continuous strip, which varies with the outer diameter of the continuous strip wound on the bobbin, will be mathematically clarified and will be described below. As a precondition, it is assumed that the line speed is constant and there is no delay in the mechanical and electrical systems.

In FIG. 1, L0 is the center distance between the guide roll and the bobbin, D1 is the outer diameter of the shaft 10a, D is the outer diameter of the continuous strip wound on the bobbin, and P is the continuous strip wound on the bobbin 10. This is a 14 traverse pitch. The traverse pitch P is controlled by the control device described later.
Since the linear movement speed of the bobbin 10 is synchronized with the rotation speed of the bobbin 10, a constant interval is maintained. Θ is a continuous line 14
The winding angle changes from + θ to −θ immediately after the linear motion of the bobbin 10 is reversed from the M direction in FIG. 1 to the O direction. δ is the linear movement distance of the bobbin 10 which advances while the continuous strip 14 changes the angle θ. Therefore, the winding angle is + θ
While changing from −θ to −θ, the bobbin 10 moves 2δ in the O direction.
Will go on.

FIG. 2 is a side view of FIG.
L is a tangent line between the outer diameter Dg of the fixed guide roll 12 and the outer diameter D of the continuous strip 14 wound on the bobbin 10.

Hereinafter, 2δ will be obtained. From FIG. 1, since δ = L × tan θ (1), 2δ = 2 (L × tan θ) (2)

Further, from FIG. 2, L = - a ^{{L0 2 (D / 2 +} Dg / 2) 2} 0.5 = {L0 2 -1 / 4 × (D + Dg) 2} 0.5 ··· (3).

FIG. 3 is a developed view in which one revolution of the continuous strip 14 wound on the bobbin 10 is cut in the axial direction of the bobbin 10 and spread on a plane. The vertical dimension in FIG. 3 is πD because it is the circumference of the outer diameter D. P is the traverse pitch, θ is the winding angle, and tan θ = P / (π × D) (4)

[0018] Thus, 2.delta. Is (2) (3) by substituting equation (4) below in formula, 2δ = 2 × [{L0 2 -1 / 4 × (D + Dg) 2} 0.5 ×
P / (π × D)] = {L0 ² −1 / 4 × (D + Dg) ² ｝ ^0.5 × P / ｛ (π
× D) / 2 } (5)

In the following, an inversion position of the changing continuous strip 14 will be obtained.

In FIG. 1, the initial reversal position of the continuous strip 14 is set to zero, the O direction , that is, the outer direction of the bobbin is set to plus (+), D1 is set to the outer diameter of the shaft 10a, and D is wound around the bobbin 10. The length of the bobbin 10 in the O direction at the time of reversal at the beginning of winding is defined as Y1, and the distance of the bobbin 10 in the O direction when the winding outer diameter is D. Is Y (= 2δ), and A is the reversal position when the outer diameter is D. A = Y1−Y (6) Y is represented by equation (5) because Y = 2δ. Further, Y1 is an equation when D on the right side of equation (5) is D1. Therefore, A = {L0 ² −1 / 4 × (D1 + Dg) ² } ^0.5 × P /
{ (Π × D1) / 2 } − {L0 ² −1 / 4 × (D + Dg)
² ｝ ^0.5 × P / ｛ (π × D) / 2 } ( 7 ) That is, when the outer diameter the winding is and D, the inversion position of the continuous strip 14, the O direction of FIG. 1, above the first reversal position (7)
The value is shifted by A in the expression. Therefore, the shift of the reversal position is performed by shifting the reversal position of the bobbin 10 in the minus (−) direction , that is, by moving the bobbin 10 inward in the bobbin direction .
Can be zero.

Next, a description will be given of thickening of the winding due to a delay of the electric system.

In the conventional continuous traverse winding system shown in FIG. 9, the delay time of the electric system is such that the internal processing time of the master sequencer 30 and the winding control sequencer 34 is about 40 milliseconds, respectively, and Signal transmission time is about 1 millisecond each, and servo amplifier 3
8 is about 10 milliseconds, for a total of about 11
1 millisecond. Due to this delay time, the bobbin 10 whose reversal position is controlled protrudes outside the target reversal position and reverses. And this is one of the causes of winding up.

Next, a preferred embodiment of the continuous strip traverse winding system of the present invention will be described with reference to the drawings.

FIG. 4 is a main part circuit diagram showing the continuous strip traverse winding system of this embodiment.

In FIG. 4, the bobbin 10 has a cylindrical shaft 10a and a pair of disk-shaped collars 1 fixed to both ends thereof.
0b, and is attached to the end of the winding shaft 21.
Reference numeral 12 denotes a fixed guide roll that supplies the continuous strip 14 to the bobbin 10, and is rotatably fixed to a supply-side device (not shown).

The take-up shaft 21 is rotatably and slidably supported by a slide support 23, and is driven to rotate by a take-up motor 20 fixed to the slide support 23. The winding motor 20 transmits this rotation speed to each winding control sequencer 34. The slide support 23 is
It is provided on a fixed bed 24 via a linear guide so as to be linearly movable in the axial direction of a take-up shaft 21, and is controlled in position and speed by a ball screw mechanism 22 driven by a servomotor 26. The number of rotations of the servomotor 26 is monitored by each winding control sequencer 34.

The winding control sequencer 34 calculates a reversal position corrected based on the programmed equation ( 7 ) based on the number of rotations of the winding motor 20 and the number of rotations of the servo motor 26. At the same time, the linear motion speed of the winding shaft 21 synchronized with the rotation speed of the winding motor 20 is calculated. Then, each winding control sequencer 34 transmits a control signal based on these calculation results to the servo amplifier 38. The servo amplifier 38 is connected to each winding control sequencer 34
, And sends the amplified drive output to the servo motor 26. It should be noted that the correction value of the delay time due to the mechanical system and the electric system and other control data can be viewed on the touch panel 33 connected to each winding control sequencer 34.

In the above-described continuous traverse winding system of this embodiment, a plurality of control devices are arranged in parallel as shown in FIG. 5 in order to operate a plurality of winding devices simultaneously. The configuration of each device arranged in parallel is the same as that of FIG. 4 described above.

According to the continuous traverse winding system of the present embodiment, the delay time of the electric system is such that the internal processing time of the winding control sequencer 34 is 20 milliseconds and the signal transmission time of the servo amplifier 38 is Is 10 milliseconds, which is a total of 30 milliseconds. Compared with the above-described conventional continuous traverse winding system, the delay time of the electric system is reduced to 27% of the conventional system.

Further, as shown in FIG. 6A, the reversal position is corrected by the control based on the above equation ( 7 ) and the shortening of the delay time of the electric system, so that the winding thickening indicated by the broken line is eliminated. The gap H is widened by the dimension α. As a result, as shown in FIG. 6B, the continuous strip 14 can be additionally wound around the bobbin 10 by the width of α.
The winding amount of the continuous strip per bobbin can be increased.

In this embodiment, the mechanism for linearly moving the bobbin 10 includes the ball screw mechanism 22, but a linear movement mechanism using a rack and a pinion may be used. Further, in this embodiment, the mechanism is such that the bobbin reciprocates with the position of the guide roll fixed. However, the mechanism may be such that the guide roll reciprocates with the position of the bobbin fixed.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An experimental example relating to one embodiment of the continuous strip traverse winding system of the present invention will be described below.

In this experiment, in one embodiment of the continuous strip traverse winding system of the present invention, the reversal position was measured for each winding diameter with and without correction based on the above control formula.

In the graph shown in FIG. 8, the winding diameter (m
m), and the vertical axis indicates the deviation (mm) of the inversion position. Then, the square points are the measured values when the correction based on the control formula is not performed, the circle points are the measured values when the correction based on the control formula is performed, and the broken line is the correction based on the control formula. The theoretical value in the case where the correction is not performed, and the one-dot chain line indicate the theoretical value in the case where the correction based on the control formula is performed.

Comparing the actually measured values in the case of performing the correction shown in the graph of FIG. 8 and the case of not performing the correction, the correction based on the above-mentioned control formula shows that the deviation of the reversal position at each winding diameter is greatly reduced. It is clear.

[0036]

Since the present invention is configured as described above, it has the following effects.

The forward rotation or reverse rotation signal generated based on the control formula controls the servomotor to correct the reversal position of the continuous strip. In order to shorten the time, the correction of the thickening of the continuous strip, which has been manually performed conventionally, can be automated. For this reason, it is possible to eliminate a winding defect such as a broken edge or a collapse of a continuous strip, which has conventionally occurred due to a variation in a manual operation or an erroneous operation. In addition, the gap between the brim portion of the bobbin and the wound continuous strip, which has been conventionally expected because of thickening, can be reduced, so that the winding amount of the continuous strip per bobbin can be increased. By these means, the production efficiency is greatly improved, for example, the equipment operation rate is increased by automation, and the production amount per unit time is increased.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating an operation of a bobbin winding a continuous strip.

FIG. 2 is a longitudinal sectional view corresponding to FIG.

FIG. 3 is a developed view in which one rotation of the continuous strip wound on the bobbin is cut in the axial direction of the bobbin and spread on a plane.

FIG. 4 is a schematic circuit diagram of an embodiment of the continuous strip traverse winding system according to the present invention.

FIG. 5 is a block diagram showing an output side circuit when a plurality of machines are operated in parallel in one embodiment of the continuous strip traverse winding system of the present invention shown in FIG. 4;

FIG. 6 is a cross-sectional view showing a bobbin on which a continuous strip is wound in one embodiment of the continuous strip traverse winding system of the present invention.

FIG. 7 is a graph showing an experimental example relating to the continuous strip traverse winding system of the present invention.

FIG. 8 is a plan view showing a part of the conventional continuous traverse winding system.

FIG. 9 is a schematic circuit diagram of another example of a conventional continuous traverse winding system.

10 is a block diagram showing a circuit on the output side when a plurality of machines are operated in parallel in the conventional continuous traverse winding system shown in FIG.

FIG. 11 is a sectional view showing a bobbin on which a continuous strip is wound in a conventional continuous strip traverse winding system.

[Explanation of symbols]

 Reference Signs List 10 bobbin 10a shaft, 10b flange 12 fixed guide roll 14 continuous strip 20 winding motor 21 winding shaft 22 ball screw mechanism 26 servo motor 34 winding control sequencer 38 servo amplifier

Continuation of the front page (72) Inventor Toshiro Wada 3 Kurami-cho, Samukawa-cho, Koza-gun, Kanagawa Nippon Mining & Metals Co., Ltd. Kurami Plant (56) References JP-A-1-127113 (JP, A) JP-A-4-167922 ( JP, A) JP-A-8-39138 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21C 47/12 B21C 47/02 B21C 47/34 B65H 54/02 B65H 54 / 28

Claims (3)

(57) [Claims] 1. A continuous strip traverse winding system for winding a plurality of continuous strips in a traverse manner around a plurality of bobbins each having a cylindrical shaft and a pair of disk-shaped collars fixed to both ends thereof. A fixed guide roll that supplies each continuous strip to the bobbin that winds it at a constant speed, and a fixed guide roll that is slidably provided in the axial direction of the bobbin with respect to the fixed bed. A winding motor fixed to and supported by the slide support, wherein the winding motor has a bobbin attached to a rotating shaft thereof; and a positive and negative sliding motor that slides the slide support in the axial direction of the bobbin. A slide drive mechanism with a servo motor capable of reverse rotation; a winding control system for monitoring the rotation speed of the winding motor and supplying a forward rotation or reverse rotation signal to the servo motor; A sequencer, wherein the forward rotation or reverse rotation signal is generated based on a control formula set to correct the reversal position of the continuous strip that changes with an increase in the outer diameter of the continuous strip wound on the bobbin. And a winding control sequencer configured as described above. 2. In the continuous traverse winding system according to claim 1, the control formula A is such that L0 is the distance between the center of the guide roll and the bobbin, D1 is the outer diameter of the bobbin shaft, and Dg is the outer diameter of the guide roll. , P is the traverse pitch of the continuous strip wound on the bobbin, and D is an arbitrary outer diameter of the continuous strip wound on the bobbin. A = ｛L0 ² −１ ／ × (D1 + Dg) ² ｝ ^0.5 × P /
{ (Π × D1) / 2 } − ｛L0 ² −1 / 4 × (D + Dg)
² ｝ ^0.5 × P / ｛ (π × D) / 2 } , and for each of the reversal positions on both sides of the reciprocating motion of the bobbin, the reversal position at the outer diameter D is calculated from the initial reversal position of the continuous strip by the above correction formula. Inward direction of bobbin based on A
A continuous strip traverse winding system characterized by being shifted to 3. The continuous traverse winding system according to claim 1, wherein the winding control sequencer also monitors rotation of a servomotor, and the servomotor is connected to the servomotor via a servo amplifier. A continuous strip traverse winding system characterized by supplying a signal.