JP2001233511A - Two-point support winder and manufacturing method for the winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-point support winder capable of winding up at a high speed with a stable tension by suppressing a variation in winding up speed and a manufacturing method for the winder. SOLUTION: This two-point support winder 20 comprises a winding member 22 having a pair of support parts 31a and 31b, a rotating means 25 rotating the winding member 22 about the rotating axis (z) of the support parts 31a and 31b, and a revolving means 24 rotating the center (z). The two-point support winder 20 further comprises a speed regulating mechanism for rotating means 27 for regulating the rotating angular speed of the rotating means 25 and a speed regulating mechanism for revolving means 26 for regulating the rotating speed of the revolving means 24. The end part of the support part 31a (or support part 31b) allowing an electrode plate 60 to be wound thereon generally performs a uniform linear motion while the rotating means 25 and the revolving means 24 are operated simultaneously so as to wind up the electrode plate 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-point support winding device for winding a material while supporting it at two points, and a method of manufacturing a wound body formed by winding. The present invention relates to a method for manufacturing a winding body by spirally winding an electrode plate around a winding core, and a two-point supporting winding device suitable for the method.

[0002]

2. Description of the Related Art A two-point support winding is a process of manufacturing a wound body by winding a long material such as a thread or a piece of cloth, which is a pair of support parts, which are positioned in parallel at a predetermined distance from each other. Then, it is to wind up on a spiral as a flat-shaped winding body. Such a winding method is used as a method of manufacturing an electrode body by winding an electrode plate, a method of winding a piece of flat cloth, or a method of winding a hollow fiber. In such a two-point support winding, the two support portions are usually rotated about the center between the two support portions as a central axis. Therefore, when the winding speed of the winding material in the winding device changes periodically, and when both support portions are parallel to the direction in which the winding material is supplied, the winding speed is low. Therefore, the tension applied to the winding material is also reduced. Also,
Conversely, when the support is wound in a state where the support portion is substantially perpendicular to the direction in which the winding material is supplied, the winding speed is high and the tension is large. Therefore, the winding speed of the supporting portion on which the winding material is being wound changes greatly, and the tension becomes uneven. This not only deteriorates the winding quality of the winding body, but also hinders an increase in the winding speed. The winding speed in this case is, as shown by the dotted line D in FIG.
It is represented by a sinusoidal wave (that is, | sin α | when the diameter of the support portion is 1 and the angle is α) with respect to the supplied direction.

[0003] Japanese Patent Application Laid-Open No. 6-168736 discloses a method for manufacturing a spiral electrode body in which fluctuations in the winding speed are suppressed. In this method of manufacturing a spiral electrode body, as shown in FIG.
The core 15 is rotated (that is, rotated) like a locus Q about the midpoint z ′, and the midpoint z ′ is rotated (that is, revolves) like a locus q. At this time,
In this publication, as described in the claims, z, which is the rotation center of the core 15,
5 near the tangential direction of the rotation locus S on the outer periphery of
It moves in the direction opposite to the pulling direction of the electrode plate as the winding member, and moves the rotation center z of the winding core 15 in the direction of pulling the electrode plate in the vicinity where the electrode plate is perpendicular to the rotation locus S of the winding core 15. Let it. Accordingly, the core 15 repeatedly moves with the core 16, the core 17, and the core 18.

However, in the embodiment shown in FIG. 7 of this publication, the driving pulleys that apply a driving force to the driven pulleys for revolving and rotating are driven by the same motor. Further, the driving pulley for revolution has a diameter twice as large as the driving pulley for rotation, the driven pulley has the same diameter, and the revolution rotates at twice the angular velocity of the rotation.

[0005]

Accordingly, at this time, the winding speed V of the end portion 15a of the winding core 15 with respect to the supplied direction is given by: V = radius of rotation if the rotation angle of rotation is α '. V _R × sin α ′ + revolution radius V _r × cos (2α ′), which changes as shown by the solid line E in FIG.
The speed fluctuation becomes maximum at 0 ° and 150 °. Therefore, even in the technique disclosed in this publication, the fluctuation of the winding speed is large, and it has not been satisfactory yet.

Accordingly, the present invention has been made by focusing on the problems existing in such prior art. Therefore,
It is an object of the present invention to provide a method of manufacturing a winding body and a two-point support winding device capable of suppressing the fluctuation of the winding speed and winding at a high speed with a stable tension.

[0007]

According to a first aspect of the present invention, there is provided a winding member having a pair of support portions, and a winding member having a center point between the two support portions as a central axis. A two-point support winding device comprising a rotation means for rotating the rotation means and a revolving means for rotating the midpoint, while simultaneously operating the rotation means and the revolving means, to wind up the winding material. And a speed adjusting mechanism for individually adjusting the angular rotation speed of the rotation means and the angular rotation speed of the revolving means.

[0008] Therefore, since the rotational angular velocity of the rotation means and the rotational angular velocity of the revolving means can be individually adjusted, finer adjustment of the speed can be performed, whereby the fluctuation of the winding speed can be finely adjusted. It is. Accordingly, a long object can be wound with a more stable tension while suppressing a change in the winding speed.

According to a second aspect of the present invention, in the two-point support winding device according to the first aspect, a speed adjusting mechanism provided in the rotation means and a speed adjusting mechanism provided in the revolving means are provided. , Driven by the same motor.

Therefore, even if the rotating means and the revolving means are respectively driven, since they are driven by one motor, the structure is simplified and the power required for the driving can be reduced. Therefore, power consumption does not increase so much even at high speed rotation, so that it can be suitable for high speed rotation.

According to a third aspect of the present invention, in the two-point support winding device according to the first or second aspect, the supporting portion for winding the winding material is supplied with the winding material. The rotation angular velocity of the rotation means and the rotation angular velocity of the revolving means are given so as to make a substantially uniform linear movement in the same direction. Therefore, fluctuations in the winding speed can be suppressed. Therefore, a long object can be wound up at high speed with stable tension.

According to a fourth aspect of the present invention, a pair of support portions provided at a predetermined distance from the take-up portion are revolved around a center point of the pair while rotating around the center point and rotating the center point. In the method of manufacturing a wound body in which the winding material is wound, such that the supporting portion winding the winding material linearly moves at a substantially constant speed in a direction in which the winding material is supplied. The winding material is formed so as to be wound on the winding member.

Therefore, fluctuations in the rotational angular velocity can be suppressed, and the winding body can be manufactured by winding at high speed with more stable tension.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 6 as an embodiment adapted to a method of manufacturing an electrode body by winding an electrode plate. I do.

To explain the present invention, a model shown in FIG. 4 showing the movement of the winding support will be described. A line segment of length 2R revolves around the circumference of a circle of radius r while rotating around its midpoint M (this position is indicated as (x, y)). At this time, one end point P of the line segment (this position is shown as (l, 0)) moves at a constant speed on a straight line that is in contact with the center O of the circle (this position is shown as (0, -r)). I do.

At this time, the following equation is established. x ² + (y−r) ² = r ² (1) (xl) ² + y ² = R ² (2) sin θ ₁ = x / r (3) sin θ ₂ = y / R (4) From equations (1) and (2), 4 (l ² + r ² ) y ² -4r (l ² + R ² ) y + (R ² −
l ² ) ² = 0 From this,

[0017]

(Equation 1) Here, for example, R = 40 mm, that is, the length of the electrode body 8
Assuming 0 mm, the value of 1 is changed by a fixed amount, and the value of the coordinate y on the Y-axis of the midpoint M corresponding thereto is obtained. The rotation angle θ ₂ is obtained from the obtained value of the coordinate y by Expression (4), and the value of the revolution angle θ ₁ is derived.

The rotation angle θ ₂ thus obtained is
Is a 5 showing the change of the revolution angle theta _1. Therefore, a mechanism for linearly moving the end 15a of the core 15 at a constant speed, that is, a speed adjusting mechanism for changing the rotation angle θ2 _{and the} revolution angle θ1 _as shown in FIG. 5 will be described below.

As shown in FIG. 1, a two-point support winding device 20 according to the present embodiment includes a winding member 22 having a rotating shaft 21 and a revolving means 24 having a speed adjusting mechanism 26 for revolving means. , A rotation means 25 provided with a rotation means speed adjusting mechanism 27, and a motor 28 having a shaft 28a.

The take-up member 22 is provided with the electrode plate 6 which is a take-up material.
It has a pair of support portions 31a and 31b which have a substantially cylindrical shape, for example, wound around 0. This pair of support portions 31
a, 31b support portions 31a, 31b via the rotation center z
On the opposite side, the above-described rotation shaft 21 is formed.

The revolving means 24 is provided with a bearing 23 in a stepped hole 32a provided at a position deviated from the center of the eccentric shaft 32.
And a columnar eccentric shaft 32 that rotatably holds the rotating shaft 21 through the shaft. A belt 33 around which a pulley 29 having the same diameter as the eccentric shaft 32 is wound is wound around one end of the eccentric shaft 32, and the rotation of the pulley 29 is transmitted to the eccentric shaft 32 as it is. The pulley 29 is a driven pulley 41 of the revolving means speed adjusting mechanism 26.
It rotates in synchronization with. The eccentric shaft 32 is rotatably supported on a base 35 via a bearing 34.

The rotation means 25 has a stepped shaft 37 attached to the end of the rotating shaft 21 via a coupling 36. At one end of the stepped shaft 37 on the side of the rotating shaft 21,
A belt 38 that also winds the pulley 30 is wound. The pulley 30 rotates in synchronization with the driven pulley 41 of the rotation mechanism speed adjusting mechanism 27. The stepped shaft 37
The other end opposite to the rotating shaft 21 is rotatably supported on a base 40 via a bearing 39.

Next, the revolving means speed adjusting mechanism 26 provided on the revolving means 24 and the revolving means speed adjusting mechanism 27 provided on the revolving means 25 will be described. Since the means speed adjusting mechanism 27 has the same structure, the same reference numerals are given, and only the revolving means speed adjusting mechanism 26 of the revolving means 24 will be described.

Here, the rotation of the shaft 28a of the motor 28 is transmitted as it is to the drive pulley 43 of the revolving means speed adjusting mechanism 26 provided in the revolving means 24. On the other hand, the two pulleys 54, 54 via the belt 55 are provided to the driving pulley 43 of the rotation speed adjusting mechanism 27 of the rotation device 25 via the belt 55 so as to be given an angular velocity 0.5 times the rotation of the motor 28. 56 are provided. That is, when the revolution means 24 makes two rotations, the rotation means 25 makes one rotation.

As shown in FIGS. 1 and 2, the speed adjusting mechanism 26 for the revolving means includes a driven pulley 41 as an output shaft.
A belt 42 is wound. The belt 42 includes a drive pulley 43 serving as an input shaft provided from the motor 28,
A pair of idler pulleys 45 and 46 disposed at a predetermined distance between the driven pulley 41 and the driving pulley 43 are wound. Further, a plurality of positioning pulleys 44 for positioning are provided outside the belt 42. The rotation of the shaft 28a of the motor 28 is transmitted as it is to the rotation of the drive pulley 43. As described above, the rotation of the pulley 54 of the rotation means speed adjusting mechanism 27 is 0.5 times the rotation of the shaft 28a of the motor 28.

Further, the speed adjusting mechanism 26 for the revolving means includes:
As shown in FIG. 2, a connecting rod 47 is provided. An idler pulley 45 is connected to one end of the connecting rod 47, and an idler pulley 46 is connected to an intermediate part thereof. The other end of the connecting rod 47 is provided with a driving portion 47a, and the driving portion 47a is provided with a sliding groove 47b extending in the vertical direction in FIG.
Further, an arm 49 is provided which rotates about a shaft 28b which rotates in synchronization with the shaft 28a of the motor 28 via means not shown. Further, a roller 50 that slides in the sliding groove 47b is rotatably provided at the other end of the arm 49.

When the arm 49 rotates, the roller 50 provided at the tip thereof slides in the sliding groove 47b, so that the connecting rod 47 moves rightward in FIG. 2A. Therefore, a pair of idler pulleys 4 provided on the connecting rod 47 is provided.
5 and 46 move rightward together with the connecting rod 47.

The driven pulley 41 is
3 and the right and left movement of the connecting rod 47 are driven by the combined rotation. The driven pulley 41 of the orbiting means speed adjusting mechanism 26 transmits the rotation to the eccentric shaft 32 via the belt 33, and the eccentric shaft 32 transmits the rotation to the rotary shaft 21 via the bearing 23. On the other hand, the driven pulley 41 of the rotation means speed adjusting mechanism 27 transmits the rotation to the stepped shaft 37 via the belt 38, and the stepped shaft 3
7 is transmitted to the rotating shaft 21 via the coupling 36. Therefore, the rotating shaft 21 winds up the electrode plate 60 while performing the revolution and the rotation at the same time. The coupling 36 has a mechanism capable of transmitting the rotation of the stepped shaft 37 and moving in a direction perpendicular to the axial direction.

After that, when the roller 50 comes to the rightmost position in FIG. 2, the connecting rod 47 moves to the rightmost position (ie, a position rotated 90 degrees clockwise from the position in FIG. 2A).
To the state shown in FIG. 2 (b). When the roller 50 comes to the leftmost position in FIG. 2 (that is, a position rotated 180 degrees from the position in FIG. 2B), the connecting rod 47 moves to the leftmost position and As shown in c).

The eccentric shaft 3 of the revolving means 24 is controlled by the revolving means speed adjusting mechanism 26 having the above-described structure.
The rotation angle θ _r given to 2 is shown as follows. θ _r = ω _r × t−A × sin (ω _a × t) (5) Similarly, the rotation angle θ _R of the rotation means speed adjusting mechanism 27 is expressed as follows.

Θ _R = ω _R × t−B × sin (ω _b × t) (6) where A and B are correction coefficients, the pulley diameter and the length of the winding member 22. , Arm 49 length r _{0 and the} like.

In the equations (5) and (6), the first term is given by the rotation of the driving pulley 43, and the second term is given by the movement of the connecting rod 47. . That is, as the length r ₀ of the arm 49 increases, the amount by which the driven pulley 41 that rotates at a constant speed is decelerated increases. If the length r ₀ of the arm 49 is adjusted, it is possible to approximate the change in the revolution angle θ ₁ and the rotation angle θ ₂ as shown in FIG. Thereby, the support portion 31 of the winding member 22
a, the support portion 31b moves at the end point P shown in FIG. The actual movement of the electrode body will be described with reference to FIG.

Both ends of the electrode body are located at positions a ₁ ,
Assuming that in a _2, i.e. when the electrode assembly is referred to as being between positions a ₁ -a _2, the ends of the support portion 31a at the position a _1, the position _{b 1, c 1, d 1} , e 1, f ₁ , g ₁ , h ₁ , i ₁ ,
j ₁ , k ₁ , l ₁ , m ₁ , n ₁ , o ₁ , p ₁ and the end of the other support portion 31 b located at the position a ₂ are located at positions b ₂ , c ₂ ,
d ₂ , e ₂ , f ₂ , g ₂ , h ₂ , i ₂ , j ₂ , k ₂ , l ₂ , m ₂ ,
Move n ₂ , o ₂ , p ₂ . That is, the electrode body is located at positions b ₁ -b ₂ , c ₁ -c ₂ , d ₁ -d ₂ , e ₁ -e ₂ , f ₁ -f ₂ ,
_{g 1 -g 2, h 1 -h} 2, i 1 -i 2, j 1 -j 2, k 1 -k 2,
The rotation is performed while changing to l ₁ -l ₂ , m ₁ -m ₂ , n ₁ -n ₂ , o ₁ -o ₂ , and p ₁ -p ₂ . At this time, the center of rotation z, which is the middle point, is determined by the positions i ₁ , b ₃ , c ₃ , d ₃ , e ₃ , f ₃ , g ₃ , h ₃ ,
Move to i ₃ , j ₃ , k ₃ , l ₃ , m ₃ , n ₃ , o ₃ , p ₃ .

When it is further rotated, the other support 3
1b winds up the electrode plate 60, and the position a₁,
b₁, C₁, D₁, E₁, F₁, G₁, H₁, I₁, J₁, K₁,
l₁, M ₁, N₁, O₁, P₁And one of the support portions 31
The end of a is located at position a_Two, B_Two, C_Two, D_Two, E_Two, F_Two,
g_Two, H_Two, I_Two, J_Two, K_Two, L_Two, M_Two, N_Two, O_Two, P_TwoTo
Go and repeat this. Therefore, the electrode plate 6
The supporting portions 31a and 31b winding the 0 are alternately substantially
The electrode plate 60 is wound up while moving at a constant linear velocity.

In the formulas (5) and (6), the diameter of the driven pulley 41 and the length of the winding member 22 are equal, and the length r of the arm 49 of the speed adjusting mechanism 26 for the revolving means is equal to r.
_Assuming that ₀ is F and the length G of the arm 49 of the rotation means speed adjusting mechanism 27, the equations (5) and (6) can be rewritten as follows.

[0036]

(Equation 2)

[0037]

(Equation 3) Here, assuming that R = 40 mm, which is the same numerical value as that calculated for the model of FIG. 4, and one cycle of 8 seconds, various numerical values are substituted for F / R of Expression (7) and G / R of Expression (8). As a result of performing a numerical calculation, F / R = 0.5, G / R = 0.3
It has been found that the time of 6 can be best approximated to the curve of the rotation angle θ _{2 and the} revolution angle θ ₁ in FIG.

That is, in the revolving means speed adjusting mechanism 26, the length r ₀ of the arm 49 is 0.5 times the radius R of the winding member 22, and in the revolving means speed adjusting mechanism 27, the length of the arm 49 is When r ₀ was set to 0.36 times the radius R, the error from the curve was minimized. The numerical data of θ _r and θ _R obtained here are substituted into the equations (1), (2), (3) and (4) calculated based on the model of FIG. The change of the coordinates (1, 0) of the end point P at 1 second) was obtained. As a result, as shown in FIGS. 6A and 6B, it was confirmed that the movement of the end point P representing the support portions 31a and 31b of the winding member 22 was substantially linear at a constant speed. In addition,
The solid line J in FIG. 6A shows the position where the X coordinate 1 of the end point P actually takes, and the solid line K in FIG. 6B shows the position where the y coordinate which should be 0 of the end point P actually takes. Are respectively shown.

As described above, in the present embodiment, the following features can be obtained. (A) In this embodiment, the revolving means speed adjusting mechanism 26 for rotating the revolving means 24 and the revolving means speed adjusting mechanism 27 for rotating the revolving means 25 are separately provided. Speed control can be performed. Therefore, the fluctuation of the winding speed can be further suppressed, and the tension can be made more uniform than before. Therefore, it can be wound at a high speed, and a high-quality electrode body can be manufactured.

(B) In the present embodiment, the revolving means 24
Since the revolving means speed adjusting mechanism 26 for rotating the rotating means and the rotating means speed adjusting mechanism 27 for rotating the rotating means 25 are driven by the same motor 28, the structure is simplified,
In addition, even when rotating at a high speed, the power consumption does not increase so much.

(C) In this embodiment, one end of one of the supporting portions 31a and 31b currently being wound is moved to the position a.
_{1, b 1, c 1,} d 1, e 1, f 1, g 1, h 1, i 1, j 1, k
It moves to ₁ , l ₁ , m ₁ , n ₁ , o ₁ , and p ₁ , and makes a substantially constant-speed linear motion. Therefore, as shown in FIG. 6, the speed fluctuation in the winding direction (X direction) can be extremely reduced as compared with the related art.

(Modification) This embodiment can be embodied with the following modifications. In the above embodiment, the speed adjusting mechanism 26 for the revolving means and the speed adjusting mechanism 27 for the rotating means as shown in FIG. 2 are used. However, the winding material is wound by using another speed adjusting mechanism. The winding member may be formed such that the winding material is wound around the winding member so that the supporting portion moves linearly at substantially constant speed in the direction in which the winding material is supplied.

In the above embodiment, the speed adjusting mechanisms for individually adjusting the rotational angular velocity of the revolving means 24 and the rotational angular velocity of the rotation means 25 are provided as separate bodies. As described above, the support portion may be moved linearly at a constant speed.

[0044]

As described in detail above, according to the present invention,
It has the following excellent effects.

According to the first aspect of the present invention, the rotational angular velocity of the rotation means and the rotational angular velocity of the revolving means can be individually adjusted, so that finer adjustment of the speed can be performed. Subtle adjustments are possible. Therefore, a long object can be wound with a more stable tension while suppressing fluctuations in the winding speed, and the device can be suitable for high-speed rotation.

According to the second aspect of the present invention, even if the rotation means and the revolving means are respectively driven, since they are driven by one motor, the power required for the driving can be reduced. Therefore, power consumption does not increase so much even at high speed rotation, so that it can be suitable for high speed rotation.

According to the third aspect of the present invention, fluctuations in the winding speed can be suppressed, so that a long object can be wound with a stable tension at a high speed. According to the fourth aspect of the present invention, it is possible to suppress fluctuations in the winding speed, and to wind up at a high speed with a more stable tension to manufacture a wound body.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view of a two-point support winding device according to an embodiment.

FIGS. 2A and 2B are right side views of main parts in FIG. 1, wherein FIG. 2A shows a position where the roller is rotated by 0 degrees, FIG. 2B shows a position where the roller is rotated by 90 degrees, and FIG. The position rotated by degrees is shown.

FIG. 3 is a schematic diagram showing a locus of movement of a winding member in the embodiment.

FIG. 4 is a model diagram showing movement of a winding member according to the embodiment.

FIG. 5 is a diagram showing changes in rotation angles of rotation and revolution when the movement shown in FIG. 3 is performed.

FIGS. 6A and 6B are diagrams showing the position of the end of the winding section, where FIG. 6A shows the X coordinate of the end and FIG. 6B shows the Y coordinate of the end.

FIG. 7 is a schematic view showing the operation of a conventional two-point support winding device.

FIG. 8 is a diagram showing a change in a winding speed of a conventional two-point support winding device.

[Explanation of symbols]

z: rotation center, 20: two-point support winding device, 22: winding member, 24: revolving means, 25: rotating means, 26: speed adjusting mechanism for revolving means as a speed adjusting mechanism, 27: speed adjusting mechanism Speed adjustment mechanism for the rotation means, 28 ... motor,
31a, 31b: Supporting part, 60: Electrode plate as winding material, 67, 69 ... Speed adjusting mechanism.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenhide Nakajima 100 Fukuno-cho, Higashi-Tonami-gun, Toyama Prefecture F-term, Toyama Plant, Hihei Toyama 3F055 AA05 AA10 BA18 BA25 DA04 FA13

Claims (4)

[Claims] 1. A winding member having a pair of support portions, a rotating means for rotating the winding member around a center point of both support portions as a central axis, and a revolving means for rotating the center point. While operating the rotation means and this revolving means simultaneously,
In a two-point support winding device configured to wind up a winding material, a two-point support is provided, which comprises a speed adjusting mechanism for individually adjusting a rotation angular velocity of the rotation means and a rotation angular velocity of the revolving means. Winding device. 2. A speed adjusting mechanism provided in the rotation means, and a speed adjusting mechanism provided in the revolving means,
The two-point support winding device according to claim 1, driven by the same motor. 3. The rotation angular velocity of the rotation means and the rotation of the revolving means so that the support for winding the winding material linearly moves at a substantially constant speed in the direction in which the winding material is supplied. The two-point support winding device according to claim 1 or 2, wherein an angular velocity is given. 4. A winding material is revolved while rotating around a center point of a pair of support portions provided at a predetermined distance from the winding portion as a central axis and rotating the center point. In the method for manufacturing a wound body to be taken up, the winding portion may be wound around the winding member such that the support portion winding the winding material linearly moves at a substantially constant speed in a direction in which the winding material is supplied. A method for manufacturing a wound body formed by winding a material.