JP3797016B2 - Winding method of aluminum electrolytic capacitor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for winding an aluminum electrolytic capacitor that is an electronic component.
[0002]
[Prior art]
A conventional winding method and apparatus for an aluminum electrolytic capacitor will be described with reference to the drawings. 4 is a configuration diagram of a conventional aluminum electrolytic capacitor winding device, FIG. 5 is a timing chart of the operation, and FIG. 6A is a characteristic diagram of the winding tension variation.
[0003]
In FIG. 4, 1 is a continuous strip-shaped negative electrode foil which is a material to be wound constituting an aluminum electrolytic capacitor, 5 is a negative electrode foil unwinding mechanism for feeding the wound negative electrode foil 1 made of a rotatable reel, etc. Reference numeral 2 denotes a continuous strip-shaped electrolytic paper, and 6 denotes an electrolytic paper unwinding mechanism for feeding the wound electrolytic paper 2 made of a rotatable reel or the like. 3 is a continuous belt-like positive electrode foil, 7 is a positive electrode foil unwinding mechanism for delivering a wound positive electrode foil 3 made of a rotatable reel, 4 is a continuous belt-like electrolytic paper, and 8 is This is an electrolytic paper unwinding mechanism for delivering the wound electrolytic paper 4 made of a rotatable reel or the like.
[0004]
Reference numeral 17 denotes a winding mechanism provided with a winding shaft 30 that is intermittently or continuously rotatable. The negative electrode foil 1, the positive electrode foil 3, and the electrolysis supplied to the winding shaft 30 from the respective winding mechanisms. The paper 2 and the electrolytic paper 4 are laminated and wound to form a capacitor element that is a main body of the aluminum electrolytic capacitor, that is, a winding element.
[0005]
Reference numerals 9, 10, 11, and 12 are dancer mechanisms, which are arranged in the supply and transfer paths between the unwinding mechanisms of the negative electrode foil 1, the positive electrode foil 3, the electrolytic paper 2, and the electrolytic paper 4 and the winding shaft 30. The balance of the winding mechanism 17 and the delivery of each unwinding mechanism are balanced or buffered to ensure operation consistency. The predetermined force required for winding by the tensile force of the springs 13, 14, 15 and 16 is used. Tension is applied to each of the negative and positive electrode foils 1 and 3 and the electrolytic papers 2 and 4 through rollers or the like so that appropriate winding in the winding mechanism 17 can be performed.
[0006]
The winding operation is performed by feeding the negative and positive electrode foils 1, 3, the electrolytic paper 2, and the electrolytic paper 4 from the respective feeding mechanisms (each driving mechanism is not shown). A predetermined tension is applied via 12 and supplied to the winding mechanism 17, the tip of which is pinched by the winding shaft 30, and a predetermined number of turns are stacked and wound (a driving mechanism is not shown). ing.
[0007]
Note that recent electronic components are required to be small and low-profile, and the structure shown in FIG. 3 is adopted in order to realize low profile even in aluminum electrolytic capacitors.
[0008]
That is, the electrolytic paper 2 and the electrolytic paper 4 interposed between the negative electrode foil 1 and the positive electrode foil 3 (sandwiching the negative and positive electrode foils 1 and 3) are set to a width N as small as possible and are wound. The negative electrode foil 1 and the positive electrode foil 3 protrude above and below the electrolytic paper 2 and the electrolytic paper 4 on the end face of the capacitor element, so as to avoid a short circuit due to contact between the negative electrode foil 1 and the positive electrode foil 3. Has been realized.
[0009]
In order to realize the low profile, the amount of winding displacement M between the negative and positive electrode foils 1 and 3 connected to one end of the lead wire 31 to the outside, the electrolytic paper 2 and the electrolytic paper 4 must be minimized. For this purpose, it is necessary to apply an appropriate tension to each at the time of winding.
[0010]
That is, when the tension becomes zero, winding deviation occurs, and the width dimensions of the negative and positive electrode foils 1 and 3 and the electrolytic papers 2 and 4 are shortened as the height is lowered. Therefore, it is important to apply or control an appropriate tension at the time of winding in the winding process of the aluminum electrolytic capacitor.
[0011]
Further, further improvement in production speed is required to reduce production cost. However, if the winding speed is increased, supply and transfer of the negative and positive electrode foils 1 and 3 and the electrolytic papers 2 and 4 are performed. The tension increases due to the inertia of the roller or the like in the path, and it becomes more difficult to control the tension during winding.
[0012]
[Problems to be solved by the invention]
As described above, in the conventional apparatus, the negative electrode foil unwinding mechanism 5, the electrolytic paper unwinding mechanism 6, the positive electrode foil unwinding mechanism 7, and the electrolytic paper unwinding mechanism 8 must be structurally large in inertia. As shown in the timing of the timing chart shown in FIG. 5, the negative and positive electrode foils 1 and 3 and the electrolytic papers 2 and 4 are supplied and supplied using the full tact time.
[0013]
Therefore, since it overlaps with the winding timing P, as shown in FIG. 6 (a), the amount of acceleration fluctuation of unwinding or feeding is added, and when the winding speed is increased, the applied tension becomes zero. Or to exceed the allowable tension value, there is a problem that the speeding up of the winding speed is limited.
[0014]
An object of the present invention is to provide a winding method for an aluminum electrolytic capacitor capable of suppressing the fluctuation in winding tension and increasing the winding speed. .
[0015]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a plurality of unwinding mechanisms each composed of a rotatable reel that supplies and supplies a continuous belt-shaped material to be wound, and a plurality of first dancer mechanisms connected to the unwinding mechanisms, respectively. A plurality of second feeding mechanisms which are connected to the first dancer mechanism, are rotatable and have a smaller inertia than the unwinding mechanism, and a plurality of second springs which are connected to the first dancer mechanism and apply a predetermined tension to the material to be wound. Using a winding device for an aluminum electrolytic capacitor configured by a dancer mechanism and a winding mechanism provided with a winding shaft that sandwiches and stacks the tips of the plurality of materials to be wound, the plurality of materials to be wound are In an aluminum electrolytic capacitor winding method in which a capacitor element is formed by stacking and winding, a winding timing of a material to be wound by the winding mechanism and each material to be wound by each feeding mechanism This is an aluminum electrolytic capacitor winding method characterized by separating the delivery timing without overlapping. The separation of winding timing and delivery timing completely eliminates the influence of the winding mechanism on the winding tension. Therefore, the tension fluctuation of the material to be wound can be reduced , and an appropriate tension can be applied to the material to be wound even in high-speed winding.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a plurality of unwinding mechanisms each composed of a rotatable reel that feeds and supplies a continuous belt-shaped material to be wound, and a plurality of first dancer mechanisms connected to the unwinding mechanism. A plurality of second mechanisms, each connected to the first dancer mechanism and rotatable, and having a smaller inertia than the unwinding mechanism and a plurality of second springs connected to the first dancer mechanism and applying a predetermined tension to the material to be wound. A plurality of winding materials using an aluminum electrolytic capacitor winding device comprising a dancer mechanism and a winding mechanism provided with a winding shaft that sandwiches and stacks the ends of the plurality of winding materials. In the winding method of an aluminum electrolytic capacitor in which a capacitor element is formed by laminating and winding, winding timing of the material to be wound by the winding mechanism and each material to be wound by each sending mechanism It was characterized by separating without overlapping and timing out, a winding method of an aluminum electrolytic capacitor, to separate the dispensing timing the winding timing, the complete effect of unwinding mechanisms for winding tension eliminating the small tension fluctuation of web material, allows a faster take-up, appropriate tension even at high take-up has an effect that can be applied to the roll stock.
[0018]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of an aluminum electrolytic capacitor winding device according to an embodiment of the present invention, and FIG. 2 is a timing chart of the same operation.
[0019]
In addition, the same number is attached | subjected to the same component as the prior art, and detailed description is abbreviate | omitted. In FIG. 1, 1, 3 are negative and positive electrode foils, 2, 4 are electrolytic papers, 5, 7 are negative and positive electrode foil unwinding mechanisms, 6, 8 are electrolytic paper unwinding mechanisms, 9, 10, 11, 12 Is a dancer mechanism, 13, 14, 15, 16 are springs, 17 is a winding mechanism, and 30 is a winding shaft.
[0020]
22, 23, 24, and 25 are dancer mechanisms that feed and transfer immediately before the winding shaft 30 that sandwiches and stacks the leading ends of the negative electrode foil 1, the positive electrode foil 3, the electrolytic paper 2, and the electrolytic paper 4. A predetermined tension necessary for winding is applied to each of the negative and positive electrode foils 1 and 3 and the electrolytic papers 2 and 4 by the tensile force of the springs 26, 27, 28, and 29, and the winding mechanism. 17 can be appropriately wound.
[0021]
Reference numeral 18 denotes a rotatable negative electrode foil feed mechanism, which is made of a material that is lighter than the negative electrode foil unwinding mechanism 5 and has a diameter that is about one-tenth of which the inertia is sufficiently reduced. The negative electrode foil 1 is wound and sent out while being pressed by a rotatable roller 18a.
[0022]
Similarly, 19 is arranged in the supply and transfer path of the electrolytic paper 2 between the dancer mechanism 10 and the dancer mechanism 23, and is a rotatable electrolytic paper feed mechanism for winding and feeding the electrolytic paper 2 while being pressed by a rotatable roller 19a. Similarly, 20 is arranged in the supply and transfer path of the positive electrode foil 3 between the dancer mechanism 11 and the dancer mechanism 24, and is rotated and positively wound around the positive electrode foil 3 while being pressed by a rotatable roller 20a. The electrode foil feeding mechanism, and 21 is also arranged in the supply and transfer path of the electrolytic paper 4 between the dancer mechanism 12 and the dancer mechanism 25, and is rotated by winding the electrolytic paper 4 while being pressed by a rotatable roller 21a. It is a flexible electrolytic paper delivery mechanism.
[0023]
As shown in FIG. 2, in addition to the winding timing J, the winding operation sets the feeding timing K of the negative and positive electrode foils 1, 3, the electrolytic paper 2, and the electrolytic paper 4, and each negative and positive electrode foil. 1 and 3 and the electrolytic papers 2 and 4 other than when winding, the feeding mechanism (drive mechanism is not shown) is fed by each feeding mechanism having a sufficiently small inertia, and each winding is performed as shown in FIG. 6 (b). Winding is performed without adding the acceleration fluctuation of the take-out mechanism. 2 indicates the unwinding timing of the negative electrode foil 1, the positive electrode foil 3, the electrolytic paper 2, and the electrolytic paper 4.
[0024]
That is, even when the winding speed is increased, the tension does not become zero or the allowable tension value is not exceeded.
[0025]
【The invention's effect】
As described above, according to the present invention, each dancer mechanism corresponding to each feeding mechanism having a sufficiently small inertia is disposed in the feeding transfer path of each winding mechanism and the winding mechanism , and the winding timing and the feeding timing are separated. Since the effect of the unwinding mechanism on the winding tension is completely eliminated , fluctuations in the winding tension can be suppressed, the winding speed can be increased, the winding accuracy is good, and productivity is improved. The effect is that improvement can be achieved.
[Brief description of the drawings]
FIG. 1 is a block diagram of an aluminum electrolytic capacitor winding device according to an embodiment of the present invention. FIG. 2 is a timing chart of the operation. FIG. 3 is a sectional view of a winding element of an aluminum electrolytic capacitor. FIG. 5 is a timing chart of the operation of the aluminum electrolytic capacitor. FIG. 6 is a characteristic diagram of a conventional winding tension fluctuation. FIG. 5B is a winding tension fluctuation according to an embodiment of the present invention. Characteristic chart [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Negative electrode foil 2 Electrolytic paper 3 Positive electrode foil 4 Electrolytic paper 5 Negative electrode foil unwinding mechanism 6 Electrolytic paper unwinding mechanism 7 Positive electrode foil unwinding mechanism 8 Electrolytic paper unwinding mechanism 9 Dancer mechanism 10 Dancer mechanism 11 Dancer mechanism 12 Dancer mechanism 13 Spring 14 Spring 15 Spring 16 Spring 17 Winding mechanism 18 Negative electrode foil feed mechanism 18a Roller 19 Electrolytic paper feed mechanism 19a Roller 20 Positive electrode foil feed mechanism 20a Roller 21 Electrolytic paper feed mechanism 21a Roller 22 Dancer mechanism 23 Dancer mechanism 24 Dancer Mechanism 25 Dancer mechanism 26 Spring 27 Spring 28 Spring 29 Spring 30 Winding shaft 31 Lead wire

Claims (1)

A plurality of unwinding mechanisms each composed of a rotatable reel that supplies and supplies a continuous belt-shaped material to be wound, and a plurality of first dancer mechanisms connected to the unwinding mechanism, and each of the first dancer mechanisms is connected to and rotated. A plurality of second dancer mechanisms having a plurality of delivery mechanisms that are free and have a smaller inertia than the unwinding mechanism, and a spring that is connected to the unwinding mechanism and applies a predetermined tension to the material to be wound; Aluminum that forms a capacitor element by laminating and winding a plurality of materials to be wound using a winding device for an aluminum electrolytic capacitor having a winding shaft provided with a winding shaft that sandwiches and winds the tip In the method for winding an electrolytic capacitor, the winding timing of the material to be wound by the winding mechanism and the delivery timing of each material to be wound by each feeding mechanism are separated without overlapping. It was characterized by the winding method of an aluminum electrolytic capacitor.

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