JP2011040698A - Electronic component and manufacturing method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoch-making electronic component capable of preventing the deterioration of electric insulation of electronic component elements owing to the fact that burrs generated in an electrode foil damage an isolation paper, and a method of manufacturing the electronic component. <P>SOLUTION: This invention is characterized by a configuration which supplies protection paper 6 from a right angle direction to a feeding direction of isolation paper 5 or an electrode foil 4 just before reeling a pasting required part of the protection paper 6 and sticks the protection paper 6 on the isolation paper 5 at a position corresponding to a burr 4a produced in the board thickness direction or the width direction of the electrode foil 4 and in such a range as to cover a reeling direction lengthwise side of the burr 4a. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to an electronic component and a method of manufacturing the same, and more particularly to an electronic component such as an electrolytic capacitor that winds a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed therebetween. In order to improve the electrical insulation performance between a plurality of electrode foils, a protective paper is applied to the separator paper that is in contact with the flat plate portion of the lead terminal, and the electrode foil is Pay attention to the fact that the locations where the ink is generated are different and that the burr is generated on the electrode foil at the statistically the same location. Or by supplying protective paper from a direction perpendicular to the feeding direction of the electrode foil so as to cover the front and rear sides of the burr winding direction at a position corresponding to the burr generated in the plate thickness direction or width direction of the electrode foil. In range By attaching the protective sheet to the paper, to innovative electronic component and a manufacturing method thereof capable burrs generated in the electrode foil can be prevented from deteriorating electric insulation performance of the device of the electronic components.

Conventionally, as an example of an electronic component, an electrolytic capacitor is formed by winding a plurality of, for example, two electrode foils each having a flat plate portion of positive and negative lead terminals fixed thereto, while interposing a plurality of, for example, two sheets of separator paper therebetween. In order to improve the electrical insulation performance between the plurality of electrode foils, it has a completed element, and is manufactured by sticking a protective paper to a separating paper that is in contact with at least one side of the flat portion of the lead terminal.

In this way, the thickness of the electrode foil is further increased in the portion where the lead terminal exists, and there is a possibility that the insulation of the electrode foil may be damaged by the protrusion of the lead terminal, so naturally at the position corresponding to the lead terminal. A protective paper is affixed to the separating paper.
On the other hand, the electrode foil has a thickness of about 50 μm as an example, and is slightly thicker than the thickness of the separator paper of about 30 μm. The same direction of burr may also occur in the direction, especially the burr in the plate thickness direction is generated protruding in the plate thickness direction at the winding start end, winding end or middle part of the electrode foil, and left as it is There is a possibility that the insulating paper is damaged and the insulation against the electrode foil of the opposite electrode is damaged.
In addition, burrs have different locations (parts) generated for each winding device, and in specific winding devices, it is known that burrs in the thickness direction or width direction occur statistically at the same location, In any case, it was necessary to apply protective paper not only to the corresponding part of the lead terminal but also to the corresponding part of the burr, but conventionally, protective paper was applied to the separator paper at a position corresponding to the burr. There is no example, and there is a defect that the separator paper is damaged by the burr in the thickness direction or the width direction generated in the electrode foil, and the electrical insulation performance of the element of the electronic component is impaired.

Note that Patent Document 1 discloses a method in which protective paper is supplied from a direction perpendicular to the feeding direction of the separator paper and the electrode foil, and the protective paper is pasted immediately before winding the necessary portion to which the protective paper is to be applied. Although disclosed, this is characterized in that a protective paper having a narrow width that is slightly wider than the width of the lead terminal is mainly attached at the corresponding position of the lead terminal. It does not disclose the point of view or technology for protecting the portion with protective paper, and is a different invention that is completely different from the present invention in its purpose, configuration, and operational effects.

JP 2009-152514 A

Description is omitted.

The present invention has been made in order to eliminate the above-described drawbacks of the prior art. The object of the present invention is to provide a plurality of electrode foils each having a flat portion of a lead terminal fixed thereto and a plurality of separating papers therebetween. In an electronic component having an element wound up while being interposed, a separating paper in a range corresponding to a burr generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides in the winding direction of the burr By attaching a protective paper to the electrode foil, no matter where or in the direction of the electrode foil burrs, burr will not damage the adjacent separator paper or electrode foil by the protective paper attached to the separator paper. It is also possible to provide an electronic component with excellent electrical insulation performance.

Another object is to provide a sheet of separator paper in the direction in which the burrs protrude in a position corresponding to the direction in which the burrs are projected in the thickness direction of the electrode foil and covering the front and rear sides in the winding direction of the burrs. By sticking a protective paper, the burr generated in the plate thickness direction of the electrode foil is prevented from damaging the release paper or the electrode foil, and without this, the electrode foil is not increased so much. It is to efficiently provide an electronic component having excellent electrical insulation performance against the burrs in the plate thickness direction.

Another object is to provide a burr protruding direction and a separating sheet opposite to the protruding direction in a range corresponding to the burr generated in the plate thickness direction of the electrode foil and covering the front and rear sides of the burr winding direction. By attaching a protective sheet to each sheet, the diameter of the element is slightly increased, but the electrical insulation performance by the separating sheet is very stable and an excellent electronic component is provided.

Another object of the present invention is to separate the separator paper in the range corresponding to the burrs generated in the plate thickness direction at the winding start end and winding end of the electrode foil and covering the front and back sides of the burr in the winding direction. By attaching a protective paper, the burr does not damage the separating paper or the electrode foil at the winding start end and winding end of the electrode foil where the generation of burr is the most. By probabilistically focusing on the required location of the protective paper, the insulation performance of the electronic component is most efficiently improved.

Still another object is to wind up a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed between them to improve electrical insulation performance between the plurality of electrode foils. In the manufacturing method of electronic parts, where protective paper is applied to the separator paper that contacts at least one side of the flat part of the terminal, protection is performed from the direction perpendicular to the feeding direction of the electrode foil and separator paper immediately before winding up the place where the protective paper is required. By supplying paper, by sticking protective paper to the separator paper at a position corresponding to the burr generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides of the burr winding direction, It is to supply protective paper extremely efficiently while continuing the winding operation of the element so that the protective paper can be applied without lowering the production efficiency. Without increasing the strike is to provide an excellent electronic components of the electrical insulation performance.

Another object is to supply the protective paper from a direction perpendicular to the feeding direction of the electrode foil and the separator paper immediately before winding up the place where the protective paper is required to be stuck, and the direction of the burr protruding in the plate thickness direction of the electrode foil By sticking a sheet of protective paper to the separator paper in the direction in which the burr protrudes in a range corresponding to the position where the burr is wound in the direction of covering the burr, Even if the burrs occur, the protective paper adhered to the separator paper is to prevent the adjacent separator paper or electrode foil from being damaged, and this can provide an electronic component with excellent electrical insulation performance. Is to do so.

Another purpose is to supply protective paper from a direction perpendicular to the feeding direction of the electrode foil and the separator paper immediately before winding the place where the protective paper is required to be applied, at a position corresponding to the burr generated in the plate thickness direction of the electrode foil. In the range covering the front and rear sides of the burr winding direction, the diameter of the element is made too large by sticking one protective paper to the protruding direction of the burr and the separating paper opposite to the protruding direction. The electronic component having excellent electrical insulation performance against the burr in the plate thickness direction of the electrode foil is efficiently provided.

Another purpose is to supply protective paper from the direction perpendicular to the feeding direction of the electrode foil and the separator paper immediately before winding up the place where the protective paper is required to be applied, and to plate at the winding start end and winding end of the electrode foil. By attaching protective paper to the separator paper in a range corresponding to the burrs generated in the thickness direction and covering the front and rear sides of the burr in the winding direction, the diameter of the element is slightly increased. The object is to provide an excellent electronic component having a very stable electrical insulation performance.

Another purpose is to statistically investigate the location where burrs occur on the electrode foil for each winding device, identify the location where protective paper is required, and immediately before winding the location where protective paper is required. The front protection paper is supplied from the direction perpendicular to the feeding direction of the electrode foil and the separator paper, and the position corresponding to the burr generated in the plate thickness direction or the width direction of the electrode foil so as to cover the front and rear sides of the burr winding direction. By sticking protective paper on the separator paper in a wide range, the occurrence of burrs that differ depending on the characteristics of each machine of the winding device is protected with protective paper very efficiently, and burrs are generated with extremely high accuracy. It is to locate the location and attach protective paper to the release paper only at that location to improve the electrical insulation performance of the electronic component extremely efficiently.

In short, an electronic component according to the present invention (Claim 1) is an electronic component having a completed element by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween. The protective paper is attached to the separator paper in a range corresponding to burrs generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides of the burr winding direction. To do.

An electronic component according to the present invention (Claim 2) is an electronic component having a completed element by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed therebetween. A sheet of protective paper is applied to the separator in the protruding direction of the burr in a range corresponding to the protruding direction of the burr generated in the plate thickness direction of the electrode foil and covering the front and rear sides of the burr in the winding direction. It is characterized by being pasted.

In addition, an electronic component according to the present invention (Claim 3) is an electronic component having an element completed by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween. The burr protruding direction and the separating paper on the opposite side to the protruding direction are in positions corresponding to burrs generated in the plate thickness direction of the electrode foil and covering the front and rear sides of the burr winding direction. It is characterized in that one protective paper is pasted and interposed.

An electronic component according to the present invention (Claim 4) is an electronic component having a completed element by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed therebetween. Protective paper is respectively applied to the separator paper in a range corresponding to burrs generated in the plate thickness direction at the winding start end and winding end of the electrode foil and covering the front and rear sides in the winding direction of the burrs. It is characterized by being pasted.

According to another aspect of the present invention, there is provided a method for manufacturing an electronic component (Claim 5), in which a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto are wound up with a plurality of separators interposed therebetween, In an electronic component manufacturing method in which protective paper is applied to a separator paper that contacts at least one side of the flat plate portion of the lead terminal in order to improve the electrical insulation performance between the lead terminals, immediately before winding up the necessary portion of the protective paper The protective paper is supplied from a direction perpendicular to the feeding direction of the electrode foil and the separator paper, and is a position corresponding to a burr generated in the plate thickness direction or the width direction of the electrode foil, and the front and rear sides in the winding direction of the burr A protective paper is pasted on the separating paper in such a range as to cover the paper.

The method for manufacturing an electronic component according to the present invention (Claim 6) is to wind up a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween, and the plurality of electrode foils. In an electronic component manufacturing method in which protective paper is applied to a separator paper that contacts at least one side of the flat plate portion of the lead terminal in order to improve the electrical insulation performance between the lead terminals, immediately before winding up the necessary portion of the protective paper The protective paper is supplied from the direction perpendicular to the feeding direction of the electrode foil and the separator paper, and is a position corresponding to the protruding direction of the burr generated in the plate thickness direction of the electrode foil, and the front and rear sides in the winding direction of the burr A protective sheet is pasted on the separating paper in the protruding direction of the burr in a range that covers the surface.

The method for manufacturing an electronic component according to the present invention (Claim 7) is to wind up a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating papers interposed therebetween, and the plurality of electrode foils. In an electronic component manufacturing method in which protective paper is applied to a separator paper that contacts at least one side of the flat plate portion of the lead terminal in order to improve the electrical insulation performance between the lead terminals, immediately before winding up the necessary portion of the protective paper The protective paper is supplied from a direction perpendicular to the feeding direction of the electrode foil and the separator paper, so as to cover the front and back sides of the burr winding direction at a position corresponding to the burr generated in the plate thickness direction of the electrode foil. In this range, a protective sheet is attached to each of the protruding direction of the burr and the separating sheet opposite to the protruding direction.

According to another aspect of the present invention, there is provided a method for manufacturing an electronic component (Claim 8), in which a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto are wound up with a plurality of separators interposed therebetween, In an electronic component manufacturing method in which protective paper is applied to a separator paper that contacts at least one side of the flat plate portion of the lead terminal in order to improve the electrical insulation performance between the lead terminals, immediately before winding up the necessary portion of the protective paper The protective paper is supplied from a direction perpendicular to the feeding direction of the electrode foil and the separator paper, and the position corresponding to the burr generated in the plate thickness direction at the winding start end and winding end of the electrode foil, Protective paper is affixed to each of the separating papers in a range that covers the front and rear sides of the burr winding direction.

The method for manufacturing an electronic component according to the present invention (Claim 9) is to wind up a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween, and the plurality of electrode foils. In an electronic component manufacturing method in which protective paper is attached to a separator paper that contacts at least one side of the flat plate portion of the lead terminal in order to improve the electrical insulation performance between them, burrs are generated in the electrode foil for each winding device Statistically inspecting the location to identify the location where the protective paper is required to be applied, and immediately before winding the location where the protective paper is required, from the direction perpendicular to the feeding direction of the electrode foil and the separator paper Supply protective paper, and apply protective paper to the separator paper in a range corresponding to burrs generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides of the burr winding direction. Characterized by Than is.

The present invention relates to an electronic component having an element completed by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto as described above with a plurality of separators interposed therebetween, and the thickness of the electrode foil Since protective paper is attached to the separator paper at a position corresponding to the burr generated in the direction or width direction and covering the front and rear sides of the burr in the winding direction, the burr does not appear in any part or direction of the electrode foil. Even if it occurs, the protective paper adhered to the separator paper can prevent the adjacent separator paper or electrode foil from being damaged, and as a result, an electronic component having excellent electrical insulation performance can be provided. There is an effect.

In addition, a sheet of protective paper is attached to the separator paper in the direction in which the burrs protrude in a range corresponding to the direction in which the burrs are generated in the thickness direction of the electrode foil and covering the front and rear sides of the burrs in the winding direction. Therefore, burrs generated in the thickness direction of the electrode foil can be prevented from damaging the release paper or the electrode foil, and as a result, the burrs in the thickness direction of the electrode foil can be reduced without increasing the element diameter. In contrast, an electronic component having excellent electrical insulation performance can be efficiently provided.

Further, in the range corresponding to the burrs generated in the plate thickness direction of the electrode foil and covering the front and rear sides of the burrs in the winding direction, one sheet of burrs in the protruding direction and the separating paper on the opposite side to the protruding direction, respectively. Since the protective paper is pasted and interposed, the diameter of the element is slightly increased, but there is an effect that the electrical insulation performance by the separating paper is very stable and an excellent electronic component can be provided.

In addition, a protective paper is attached to the separator paper at a position corresponding to a burr generated in the sheet thickness direction at the winding start end and winding end of the electrode foil and covering the front and rear sides in the winding direction of the burr. As a result, the burr does not damage the separator paper or the electrode foil at the winding start end and winding end of the electrode foil where the generation of burr is the most. There is an effect that the safety can be emphasized and the insulation performance of the electronic component can be improved most efficiently.

Furthermore, in order to improve the electrical insulation performance between the plurality of electrode foils by winding up the plurality of electrode foils to which the flat portions of the lead terminals are respectively fixed with a plurality of separating papers interposed therebetween, Protective paper is supplied from a direction perpendicular to the feeding direction of the electrode foil and the separator paper immediately before winding up the place where the protective paper is to be applied in the manufacturing method of the electronic component in which the protective paper is attached to the separator paper in contact with at least one side of the part Since the protective paper is applied to the separator paper at a position corresponding to the burr generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides of the burr winding direction, As a result, the protective paper can be supplied very efficiently and the protective paper can be applied without lowering the production efficiency. Without an effect that can provide an excellent electronic components of the electrical insulation performance.

Also, immediately before winding up the necessary place of the protective paper, the protective paper is supplied from the direction perpendicular to the feeding direction of the electrode foil and the separator paper, and at a position corresponding to the protruding direction of the burr generated in the plate thickness direction of the electrode foil. Since a sheet of protective paper is applied to the separator paper in the direction of protrusion of the burr in a range that covers the front and rear sides of the burr winding direction, burrs are generated at any location or direction of the electrode foil. In addition, the protective paper having the burr stuck on the separator paper has an effect of preventing the adjacent separator paper or electrode foil from being damaged, and as a result, an electronic component having an excellent electrical insulation performance can be provided.

Also, immediately before winding up the necessary place of the protective paper, the protective paper is supplied from the direction perpendicular to the feeding direction of the electrode foil and the separator paper, and the position corresponding to the burr generated in the plate thickness direction of the electrode foil is Since one sheet of protective paper is attached to the protruding direction of the burr and the separating paper on the opposite side to the protruding direction in the range covering the front and rear sides in the winding direction, without increasing the diameter of the element too much, There is an effect that it is possible to efficiently provide an electronic component having excellent electrical insulation performance against burrs in the plate thickness direction of the electrode foil.

Also, immediately before winding up the necessary place of the protective paper, the protective paper is supplied from the direction perpendicular to the feeding direction of the electrode foil and the separator paper, and the variability generated in the plate thickness direction at the winding start end and winding end of the electrode foil. The protective paper is applied to the separator paper in a range corresponding to the position of the burr and covering the front and rear sides of the burr winding direction. Is very stable and can provide excellent electronic components.

Also, statistically investigate the location where burrs occur on the electrode foil for each winding device, identify the location where protective paper is required, and immediately before winding the location where protective paper is required, isolate the electrode foil and Separation paper in a range corresponding to the burrs generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides in the winding direction of the burrs, supplying the front protection paper from the direction perpendicular to the paper feeding direction Protective paper is affixed to the machine so that the burrs that differ depending on the characteristics of the take-up machine are protected by the protective paper very efficiently, and the burrs are identified with extremely high accuracy. Thus, there is an effect that it is possible to improve the electrical insulation performance of the electronic component extremely efficiently by sticking the protective paper to the release paper only at the location.

FIG. 1 relates to an embodiment of the present invention, and FIG. 1 shows a state in which protective paper is supplied by a protective paper supply device from a direction perpendicular to the winding direction immediately before the electrode foil and the separator paper are wound by the winding device. It is a schematic perspective view. It is a side view of the element in winding which shows the case where 1 sheet of protective paper is stuck to the separation paper of the burr | projection direction which generate | occur | produced on the lower side in the winding end end part of electrode foil. A winding showing a case where a sheet of protective paper is applied to the separating paper in the protruding direction of the burr generated at the end of winding of the electrode foil, and a protective paper is also applied to the separating paper opposite to the protruding direction of the burr. It is a perspective view of the element under removal. It is a side view of the element in winding which shows the case where 1 sheet of protective paper is stuck to the separating paper of the burr | projection direction which generate | occur | produced on the upper side in the winding end edge part of electrode foil. It is a perspective view of the element in winding which shows the case where 1 sheet of protective paper is stuck to the separating paper of the burr | projection direction which generate | occur | produced on the upper side in the winding end end part of electrode foil. It is a schematic side view of the element during winding which shows the case where one sheet of protective paper is stuck on the separating paper in the protruding direction of the burr generated on the upper side at the end of winding of the electrode foil. A winding showing a case where a sheet of protective paper is applied to the separating paper in the protruding direction of the burr generated at the end of winding of the electrode foil, and a protective paper is also applied to the separating paper opposite to the protruding direction of the burr. It is a side view of the element under removal. It is a schematic side view which shows the case where 1 sheet of protective paper is each stuck to the separating paper of the burr | projection direction which generate | occur | produced in the winding start end part and winding end part of electrode foil, respectively. It is a schematic side view which shows the case where one sheet of protective paper is stuck to the separating paper on the opposite side to the protruding direction and the protruding direction of burrs generated at the winding start end and winding end of the electrode foil, respectively. It is a partial expanded longitudinal cross-sectional view of the electrode foil which shows the state which a burr | flash generate | occur | produces in the winding start end part and the middle part. Partially enlarged vertical sectional view of the electrode foil sandwiched between two sheets of separator paper, showing the case where a sheet of protective paper is applied to the separator paper in the protruding direction (upper side) of the burr generated at the winding start end of the electrode foil It is. Partially enlarged longitudinal section of electrode foil sandwiched between two sheets of separator paper, showing the case where a sheet of protective paper is applied to the separator paper in the protruding direction (lower side) of the burr generated at the winding start end of the electrode foil FIG. It is a side view which shows the case where 1 sheet of protective paper is stuck to 1 sheet of separation paper against the burr generated in the width direction of the electrode foil. It is a perspective view which shows the case where 1 sheet of protective paper is stuck to each of 2 sheets of separation paper against the burr generated in the width direction of the electrode foil. It is a partial top view of electrode foil, isolation paper, and protection paper which shows the state where the burr | flash which generate | occur | produced in the width direction covers the protection paper of the same width as isolation paper. FIG. 16 is a partial perspective view of the electrode foil, the separator paper, and the protective paper showing the same state as FIG. 15.

DESCRIPTION OF SYMBOLS 1 Electronic component 2 Lead terminal 2P Positive lead terminal 2M Negative lead terminal 3 Element 4 Electrode foil 4a Burr 4b Winding end part 4c Winding end part 4d Middle part 4P Positive electrode foil 4M Negative electrode foil 5 Isolation paper 5A Separation paper 5B Separation paper 6 Protective paper 8 Electronic component take-up device 9 Reel 10 Guide pulley 16 Protective paper supply device A arrow B arrow

Hereinafter, the present invention will be described based on embodiments shown in the drawings. As shown in FIGS. 1 to 16, the electronic component 1 (Claim 1) according to the present invention includes a plurality of the flat plate portions 2a of the lead terminals 2 (positive lead terminal 2P, negative lead terminal 2M) fixed to each other. In an electronic component having an element completed by winding the electrode foil 4 (positive electrode foil 4P, negative electrode foil 4M) with a plurality of separating papers 5 (5A, 5B) interposed therebetween, The protective paper 6 is attached to the separating paper 5 in a range corresponding to the burr 4a generated in the plate thickness direction or the width direction and covering the front and rear sides of the burr winding direction.

FIGS. 1 to 3 show a state in which the burr 4a occurs at the lower end (winding inner side) in the plate thickness direction at the winding end portion 4c of the negative electrode foil 4M. Is about 50 μm, and the height of the burr 4a generated in this is about 20 μm. On the other hand, the thickness of the separating paper 5 is about 30 μm.

For these reasons, the width of the protective paper 6 (length in the winding direction) for preventing accidents such as breakage of the separating paper 5 due to the burr 4a is the same as the width of the protective paper 6 used in the case of the lead terminal 2. For example, it is sufficient that the width of the flat plate portion 2a of the lead terminal 2 is several times to several tens of times (thin width), as shown in FIG. The protective paper 6 is applied so as to cover the burr 4a, and the protective paper 6 is supplied from the direction perpendicular to the winding direction by the protective paper supply device 16 immediately before the element 3 is wound. ing.

Further, the burr 4a often occurs at the end of the electrode foil 4 such as the winding start end 4b, but is not necessarily limited to the end, and as shown in FIG. It may occur in the portion 4d, and the direction of the protrusion is shown in FIG. 10 and FIG. 11 that is generated on the upper side (outside of the winding), but as shown in FIG. ) And may occur in either direction.
.

13 to 16, the burr 4a may be generated in the width direction of the electrode foil 4. Even in this case, the width of the separating paper 5 is wider than the width of the electrode foil 4, so that the separating paper By sticking a protective paper 6 having the same length as the width over the entire width 5, the burr 4 a protruding in the width direction of the electrode foil 4 is completely covered with the protective paper 6 as shown in FIGS. 15 and 16. be able to.

Further, as shown in FIGS. 2 and 4 to 6, the electronic component 1 according to the present invention (Claim 2) has the flat plate portions 2a of the lead terminals 2 (the positive lead terminal 2P and the negative lead terminal 2M), respectively. In an electronic component having a completed element by winding a plurality of fixed electrode foils 4 (positive electrode foil 4P, negative electrode foil 4M) with a plurality of separating papers 5 (5A, 5B) interposed therebetween, A sheet of protective paper on the separating paper 5 in the protruding direction of the burr 4a in a range corresponding to the protruding direction of the burr 4a generated in the plate thickness direction of the electrode foil 4 and covering the front and rear sides of the burr winding direction. 6 is interposed.

In FIG. 2, when the burr 4a in the plate thickness direction protrudes downward at the winding end 4c of the electrode foil 4M as an example of the electrode foil 4 as described above, only one protective paper is provided on the separating paper 5B. 6 is affixed. This is because a sufficient amount of burr can be covered even with a single sheet, damage to the separating sheet 5B can be prevented, and since the protective sheet 6 is one sheet, the thickening of the element 3 by the protective sheet 6 is possible. This is because the increase in height can be minimized.

4 to 6, the burr 4a is formed so as to protrude upward in the plate thickness direction at the winding end 4c of the electrode foil 4M. Therefore, the protective paper 6 is attached only to the separating paper 5A on the protruding side of the burr. Affix one sheet.

Further, as shown in FIGS. 3 and 7, the electronic component 1 according to the present invention (Claim 3) has the flat plate portions 2a of the lead terminals 2 (positive lead terminal 2P, negative lead terminal 2M) fixed thereto, respectively. In an electronic component having an element completed by winding a plurality of electrode foils 4 (positive electrode foil 4P, negative electrode foil 4M) with a plurality of separating papers 5 (5A, 5B) interposed therebetween, the electrode foil 4 In the range corresponding to the burr 4a generated in the sheet thickness direction and covering the front and rear sides in the winding direction of the burr, one sheet is provided for each of the protruding direction of the burr 4a and the separating paper 5 opposite to the protruding direction. The protective paper 6 is pasted and interposed.

In FIG. 3, a burr 4a protruding downward in the plate thickness direction is generated at the winding end 4c of the negative electrode foil 4M. For this reason, one sheet of protective paper 6 is provided on the separating paper 5B on the protruding side of the burr. At the same time, another sheet of protective paper 6 is similarly attached to the separation paper 5A on the opposite side. This is because the thickness of the element 3 slightly increases, but it is possible to completely prevent the separators 5A and 5B from being damaged by the burr 4a.

In FIG. 7, a burr 4a protruding upward in the plate thickness direction is generated at the winding end 4c of the negative electrode foil 4M. For this reason, one sheet of protective paper 6 is provided on the separating paper 5A on the protruding side of the burr. At the same time, another sheet of protective paper 6 is similarly attached to the separation paper 5B on the opposite side. This is to prevent damage to the separators 5A and 5B due to the burr 4a more reliably, as in the case of FIG. 3, although the thickness of the element 3 increases somewhat.

Further, as shown in FIGS. 8 and 9, the electronic component 1 according to the present invention (Claim 4) has the flat plate portions 2a of the lead terminals 2 (positive lead terminal 2P, negative lead terminal 2M) fixed thereto, respectively. In an electronic component having an element completed by winding a plurality of electrode foils 4 (positive electrode foil 4P, negative electrode foil 4M) with a plurality of separators 5 (5A, 5B) interposed therebetween, the electrode foil 4 Protective paper 6 is applied to the separating paper 5 in a range corresponding to the burr 4a generated in the thickness direction at the winding start end 4b and the winding end 4c and covering the front and rear sides in the winding direction of the burr. Attached and interposed.

In FIG. 8, since a burr 4a protruding upward in the thickness direction is formed at the winding start end 4b of the negative electrode foil 4M, one sheet of protective paper 6 is stuck to the separating paper 5A. Since a burr 4a protruding downward in the thickness direction is generated at the winding end 4c of the same negative electrode foil 4M, one sheet of protective paper 6 is adhered to the separating paper 5B.

In FIG. 9 as well, burrs 4a projecting upward in the thickness direction are formed at the winding start end 4b of the negative electrode foil 4M. In this case, one sheet of protection paper 5A and 5B is protected. A burr 4a projecting downward in the thickness direction is generated at the end 4c of winding of the same negative electrode foil 4M, but a sheet of protective paper 6 is provided for each of the separating papers 5A and 5B. Is affixed. This is to prevent damage to the separators 5A and 5B due to the burr 4a more surely, although the thickness of the element 3 slightly increases.

The electronic component manufacturing method according to the present invention (Claim 5) includes a plurality of electrode foils 4 (positive positive electrodes) to which the flat plate portions 2a of the lead terminals 2 (positive lead terminals 2P, negative lead terminals 2M) are respectively fixed. In order to improve the electrical insulation performance between the plurality of electrode foils 4P and 4M by winding the electrode foil 4P and the negative electrode foil 4M) with a plurality of separating papers 5 (5A and 5B) interposed therebetween. In the method of manufacturing an electronic component in which the protective paper 6 is attached to the separating paper 5 in contact with at least one surface side of the flat plate portion 2a of the plate 2, the electrode foil 4 and the separating paper 5 are fed immediately before winding up the necessary place of the protective paper 6 Protective paper 6 is supplied from a direction perpendicular to the direction, and the separating paper 5 is in a range corresponding to the burr 4a generated in the plate thickness direction or width direction of the electrode foil 4 and covering the front and rear sides of the burr winding direction. This is a method of attaching the protective paper 6 to the paper.

In addition, the manufacturing method according to the present invention (Claim 6) includes a plurality of electrode foils 4 (positive electrode foils 4P) to which the flat plate portions 2a of the lead terminals 2 (positive lead terminals 2P, negative lead terminals 2M) are respectively fixed. In order to improve the electrical insulation performance between the plurality of electrode foils 4P and 4M by winding the negative electrode foil 4M) with a plurality of separating papers 5 (5A and 5B) interposed therebetween, the flat plate of the lead terminal 2 In the manufacturing method of the electronic component in which the protective paper 6 is attached to the separating paper 5 that is in contact with at least one surface side of the part 2a, right before the feeding direction of the electrode foil 4 and the separating paper 6 immediately before the protective paper 6 is attached. Protective paper 6 is supplied from the direction of the burr 4a in a range corresponding to the protruding direction of the burr 4a generated in the plate thickness direction of the electrode foil 4 and covering the front and rear sides of the burr winding direction. A sheet of protective paper 6 is affixed to the separating paper 5 It is a method.

The electronic component manufacturing method according to the present invention (Claim 7) includes a plurality of electrode foils 4 (positive positive electrodes) each having a flat plate portion 2a of a lead terminal 2 (positive lead terminal 2P, negative lead terminal 2M) fixed thereto. In order to improve the electrical insulation performance between the plurality of electrode foils 4P and 4M by winding the electrode foil 4P and the negative electrode foil 4M) with a plurality of separating papers 5 (5A and 5B) interposed therebetween. In the method of manufacturing an electronic component in which the protective paper 6 is attached to the separating paper 5 in contact with at least one surface side of the flat plate portion 2a of the plate 2, the electrode foil 4 and the separating paper 5 are fed immediately before winding up the necessary place of the protective paper 6 The protective paper 6 is supplied from the direction perpendicular to the direction of the electrode foil 4, and the burr 4a protrudes in a range corresponding to the burr 4a generated in the plate thickness direction of the electrode foil 4 and covering the front and rear sides of the burr winding direction. On the separating paper 5 opposite to the protruding direction It is a method of attaching 々_1 piece of the protective paper 6.

The electronic component manufacturing method according to the present invention (Claim 8) includes a plurality of electrode foils 4 (positive positive electrodes) each having a flat plate portion 2a of a lead terminal 2 (positive lead terminal 2P, negative lead terminal 2M) fixed thereto. In order to improve the electrical insulation performance between the plurality of electrode foils 4P and 4M by winding the electrode foil 4P and the negative electrode foil 4M) with a plurality of separating papers 5 (5A and 5B) interposed therebetween. In the method of manufacturing an electronic component in which the protective paper 6 is attached to the separating paper 5 in contact with at least one surface side of the flat plate portion 2a of the plate 2, the electrode foil 4 and the separating paper 5 are fed immediately before winding up the necessary place of the protective paper 6 Protective paper 6 is supplied from a direction perpendicular to the direction, and is a position corresponding to the burr 4a generated in the plate thickness direction at the winding start end 4b and winding end 4c of the electrode foil 4, and the burr winding direction front and rear side Protected by separator paper 5 as long as it covers 6 is a method of attaching a.

The electronic component manufacturing method according to the present invention (Claim 9) includes a plurality of electrode foils 4 (positive positive electrodes) to which the flat plate portions 2a of the lead terminals 2 (positive lead terminals 2P, negative lead terminals 2M) are respectively fixed. In order to improve the electrical insulation performance between the plurality of electrode foils 4P and 4M by winding the electrode foil 4P and the negative electrode foil 4M) with a plurality of separating papers 5 (5A and 5B) interposed therebetween. In the electronic component manufacturing method in which the protective paper 6 is attached to the separating paper 5 in contact with at least one surface side of the flat plate portion 2a of the plate 2, the burr is generated in the electrode foil 4 for each winding device 8 (details not shown). The necessary location of the protective paper 6 is specified by statistically examining the protective paper 6, and the protective paper 6 is viewed from the direction perpendicular to the feeding direction of the electrode foil 4 and the separating paper 5 immediately before winding the required location of the protective paper 6. Occurs in the plate thickness direction or width direction of the electrode foil 4 A method of sticking a protective sheet 6 to the isolation sheet 5 to the extent that a position corresponding to the re 4a cover the winding direction longitudinal side of the burr.

The present invention is configured as described above, and the operation thereof will be described below. In FIG. 1, the positive electrode foil 4P, the separator paper 5A, the negative electrode foil 4M, and the separator paper 5B are wound in the direction of arrow A by the element winding device 8 to form the element 3, When the electrode foil 4 is cut, burrs 4a are generated.

On the other hand, the protective paper 6 is supplied from a protective paper supply device 16 (details omitted) as shown by an arrow B from the right angle direction of the wound electrode foil 4 and the separating paper 5 just before the winding. The protective paper 6 is wound and stored on the reel 9, is fed out from the reel as necessary, is supplied through the guide pulley 10, and is cut when separated to the same length as the width of the separating paper 5. Affixed to paper 5. The protective paper 6 is also affixed to the separating paper 5 at the corresponding position of the lead terminal 2.

Further, since it is known that the burr 4a is generated to the same part in the same direction and in the same direction for each winding device, the position where the burr is generated in the electrode foil 4 for each winding device 8 is statistically determined. Investigate and identify the location where the protective paper 6 needs to be applied, and supply the protective paper 6 from the direction perpendicular to the feeding direction of the electrode foil 4 and the separating paper 5 immediately before winding the protective paper 6 where necessary. The protective paper 6 is affixed to the separating paper 5 in a range corresponding to the burr 4a generated in the plate thickness direction or width direction of the electrode foil 4 and covering the front and rear sides of the burr winding direction.
When the protective paper 6 is supplied and pasted, the winding device is stopped, and the protective paper 6 is supplied to the stopped separating paper 5 from the perpendicular direction. When the supply of the protective paper 6 is completed, the protective paper 6 is cut and pasted to the same width as the separating paper 5. This sticking is performed by an adhesive material (not shown) applied to the lower side of the protective paper 6 in FIG. When the application of the protective paper 6 is completed, the winding is performed again.
When the protective paper 6 is attached to all the places where the protective paper 6 needs to be applied, the winding is completed and the element 3 is completed.

Thus, by sticking the protective paper to the separating paper 5 so that the burr 4a generated on the electrode foil 4 is covered by the protective paper 6, the thickness of the element 3 is slightly increased. There is no risk of damaging the insulation of the electrode foil 4 by damaging the electrode foil 4, and it is possible to avoid an insulation failure of the electronic component 1, and to provide an electronic component that is very excellent in electrical insulation, for example, a high-quality electrolytic capacitor. Can do.

Claims (9)

In an electronic component having an element completed by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed therebetween, variability generated in the plate thickness direction or width direction of the electrode foils An electronic component in which a protective paper is pasted on the separating paper in a range corresponding to the above and covering the front and back sides of the burr in the winding direction. In an electronic component having an element completed by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separators interposed therebetween, the direction of burr protruding in the plate thickness direction of the electrode foil An electronic component characterized in that a sheet of protective paper is affixed to the separating paper in the protruding direction of the burr in a range corresponding to 1 and covering the front and rear sides of the burr in the winding direction. Corresponding to burr generated in the plate thickness direction of the electrode foil in an electronic component having a completed element by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween A protective sheet is attached to each of the separating paper on the opposite side to the protruding direction of the burr and the protruding direction in a range that covers the front and rear sides of the burr winding direction. Electronic parts. In an electronic component having an element completed by winding a plurality of electrode foils each having a flat plate portion of a lead terminal fixed thereto with a plurality of separating paper interposed therebetween, the winding start end portion and winding end end portion of the electrode foil An electronic component in which protective paper is attached to each of the separating paper in a range corresponding to burrs generated in the plate thickness direction and covering the front and rear sides of the burrs in the winding direction. In order to improve the electrical insulation performance between the plurality of electrode foils by winding up a plurality of electrode foils to which the flat plate portions of the lead terminals are respectively fixed with a plurality of separators interposed therebetween, the flat plate portions of the lead terminals In the method of manufacturing an electronic component in which protective paper is applied to the separating paper that contacts at least one side of the protective sheet, the protection is performed from a direction perpendicular to the feeding direction of the electrode foil and the separating paper immediately before winding the protective paper. Supplying paper, and applying protective paper to the separator paper in a range corresponding to burrs generated in the plate thickness direction or width direction of the electrode foil and covering the front and rear sides of the burr winding direction. A method for manufacturing an electronic component. In order to improve the electrical insulation performance between the plurality of electrode foils by winding up a plurality of electrode foils to which the flat plate portions of the lead terminals are respectively fixed with a plurality of separators interposed therebetween, the flat plate portions of the lead terminals In the method of manufacturing an electronic component in which protective paper is applied to the separating paper that contacts at least one side of the protective sheet, the protection is performed from a direction perpendicular to the feeding direction of the electrode foil and the separating paper immediately before winding the protective paper. One sheet is supplied to the separator in the protruding direction of the burr at a position corresponding to the protruding direction of the burr generated in the plate thickness direction of the electrode foil and covering the front and rear sides in the winding direction of the burr. A method for manufacturing an electronic component, comprising attaching a protective paper. In order to improve the electrical insulation performance between the plurality of electrode foils by winding up a plurality of electrode foils to which the flat plate portions of the lead terminals are respectively fixed with a plurality of separators interposed therebetween, the flat plate portions of the lead terminals In the method of manufacturing an electronic component in which protective paper is applied to the separating paper that contacts at least one side of the protective sheet, the protection is performed from a direction perpendicular to the feeding direction of the electrode foil and the separating paper immediately before winding the protective paper. Paper is supplied and the burr protrudes in the direction corresponding to the burr generated in the plate thickness direction of the electrode foil and covers the front and rear sides of the burr in the winding direction. A method of manufacturing an electronic component, wherein one piece of protective paper is attached to each separating paper. In order to improve the electrical insulation performance between the plurality of electrode foils by winding up a plurality of electrode foils to which the flat plate portions of the lead terminals are respectively fixed with a plurality of separators interposed therebetween, the flat plate portions of the lead terminals In the method of manufacturing an electronic component in which protective paper is applied to the separating paper that contacts at least one side of the protective sheet, the protection is performed from a direction perpendicular to the feeding direction of the electrode foil and the separating paper immediately before winding the protective paper. Supply the paper and place it on the separator paper in a range corresponding to burrs generated in the plate thickness direction at the winding start end and winding end of the electrode foil and covering the front and back sides of the burr in the winding direction. A method for manufacturing an electronic component, characterized in that a protective paper is attached to each. In order to improve the electrical insulation performance between the plurality of electrode foils by winding up a plurality of electrode foils to which the flat plate portions of the lead terminals are respectively fixed with a plurality of separators interposed therebetween, the flat plate portions of the lead terminals In the method of manufacturing an electronic component in which protective paper is applied to the separating paper that contacts at least one side of the sheet, a place where burrs are generated in the electrode foil for each winding device is statistically investigated to determine a place where the protective paper is required to be applied. Identify and supply the protective paper from a direction perpendicular to the feeding direction of the electrode foil and the separating paper immediately before winding up the necessary location of the protective paper, and in the plate thickness direction or width direction of the electrode foil A method of manufacturing an electronic component, characterized in that a protective paper is attached to the separating paper at a position corresponding to a generated burr and covering the front and rear sides of the burr in the winding direction.

Images