CN113314347B - Cutting method of formed foil - Google Patents
Cutting method of formed foil Download PDFInfo
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- CN113314347B CN113314347B CN202110867440.7A CN202110867440A CN113314347B CN 113314347 B CN113314347 B CN 113314347B CN 202110867440 A CN202110867440 A CN 202110867440A CN 113314347 B CN113314347 B CN 113314347B
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- specific volume
- foil
- formed foil
- volume test
- test points
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- 239000011888 foil Substances 0.000 title claims abstract description 127
- 238000005520 cutting process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention particularly relates to a cutting method of formed foil, which comprises the following steps: s1: the method comprises the following steps that a plurality of specific volume test points are marked at the head position and the tail position of a formed foil coil, the head specific volume test points and the tail specific volume test points are opposite in number and are sequentially distributed along the width direction of the formed foil coil, each group of the head specific volume test points and the tail specific volume test points are arranged oppositely along the length direction of the formed foil coil, and specific volume values of the specific volume test points are measured; s2: cutting a plurality of formed foil cakes with a certain width D on the formed foil roll to obtain the minimum specific volume value Vmin of the specific volume test point on each cake of formed foil; s3: and obtaining the splitting length L = C/(K × Vmin × D) of the foil to be cut according to the capacitance C of the capacitor, the width D of the formed foil cake, the minimum specific volume value Vmin of the specific volume test points on the formed foil cake and the coefficient K, and sequentially cutting a plurality of formed foils with the splitting length L on the formed foil cake.
Description
Technical Field
The invention belongs to the technical field of electrolytic capacitor preparation, and particularly relates to a formed foil cutting method.
Background
In the cost composition of the aluminum electrolytic capacitor, the material cost of the formed foil accounts for 50% or more, so the improvement of the utilization rate of the formed foil has great value.
For an aluminum electrolytic capacitor, C = K V S, where C is capacitance, K is coefficient, V is formed foil specific volume, and S is formed foil area. During the production and manufacturing process of the capacitor, each roll of formed foil is generally tested for a fixed specific volume of 6 points or 10 points, and the specific volume test points are distributed at the head and the tail of the roll and are respectively 3 points or 5 points. Then, the minimum value of 6 points or 10 points is selected as the specific volume V of the rolled formed foil, and the minimum specific volume is used for calculating the area of the formed foil required by a capacitor with a certain capacity, so that negative capacity difference of the capacitor is avoided, but for the part of the formed foil with the specific volume larger than the minimum specific volume, the capacity of the produced capacitor exceeds our requirement, the consistency of the capacity of a plurality of capacitors made by each rolled formed foil is not good, and the utilization rate of the formed foil is low, so that 'waste' is caused to a certain degree.
Disclosure of Invention
In order to solve the problems of low utilization rate of formed foil and poor consistency of capacity among capacitors in the prior art, the invention provides a cutting method of the formed foil.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows, and the cutting method of the formed foil comprises the following steps:
s1: the method comprises the following steps that a plurality of specific volume test points are marked at the head position and the tail position of a rolled formed foil, the specific volume test points at the head of the rolled formed foil and the specific volume test points at the tail of the rolled formed foil are opposite in number and are sequentially distributed along the width direction of the formed foil, the specific volume test points at the head of each group and the specific volume test points at the tail of the rolled formed foil are oppositely arranged along the length direction of the formed foil, and the specific volume value of each specific volume test point is measured;
s2: cutting a plurality of formed foil cakes with a certain width D on the formed foil roll according to the size of the capacitor to be produced to obtain the minimum specific capacity value V of the specific capacity test point on each cake of formed foilmin；
S3: the capacitance C of the capacitor to be produced, the width D of the formed foil cake, and the minimum specific value V of the specific volume test point on the formed foil cakeminAnd knowing the coefficient K, it is known that the length of each slit to be cut into foil L = C/(K V)minD), cutting a plurality of formed foils with the length of L on the formed foil cake in sequence;
s4: repeating the above operations S2-S3 until the roll-formed foil is cut.
Preferably, the number of specific volume test points at the head position and the tail position of the roll is five. The number of the specific volume test points is reasonable, and the minimum specific volume of each area is effectively marked.
Further, the total width of the formed foil roll is W =500mm, the width of 7mm is reserved on the two side edges of the formed foil roll as leftover materials, the width of the formed foil cake is D =54mm, and 9 cakes of the formed foil cake can be cut. The formed foil is utilized to the maximum extent according to the size of the capacitor, and the utilization rate of the formed foil is improved.
Has the advantages that: the invention relates to a cutting method of formed foil, which divides a formed foil roll into areas, and the specific volume of each formed foil cake is respectively the minimum specific volume value V of a specific volume test point of the areaActual minWhen producing a capacitor of a certain capacity, the target capacity is CTarget=K*V*S=K*0.38uf/cm254mm 4200mm, the specific volume of a cake is VActual minThe actual cutting width of the formed foil cake is 54mm, and the actual cutting length is LPractice ofThen C isTarget=K*Vmin*54mm*LPractice of，LPractice of=0.38*4200/VActual minThe same cake is formed into a foil cake, and after the cutting method is adopted, the manufacturing number of the capacitors is increased from 846 to 857, the yield is increased by 1.3 percent, and the utilization rate of the formed foil is higher; the cutting method of the formed foil uses the actual minimum specific volume of each formed foil cake as VActual minCalculating the length of the split to obtain LActual max，CPractice of=K*VActual min*D*LActual max，CPractice ofCloser to the target capacity CTargetTherefore, the consistency of the capacitance capacity is better when the trimming method is adopted for calculation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a rolled state of a formed roll of the present invention;
FIG. 2 is a schematic view of the rolled-up foil of the present invention in an unrolled state;
in the figure: 1. and (4) forming a foil roll, 11, and a specific volume test point.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, a cutting method of the formed foil includes the following steps:
s1: the method comprises the following steps that a plurality of specific volume test points 11 are marked at the head position and the tail position of a formed foil, the specific volume test points 11 at the head of the formed foil and the specific volume test points 11 at the tail of the formed foil are opposite in number and are sequentially distributed along the width direction of the formed foil coil 1, the specific volume test points 11 at the head of each group and the specific volume test points 11 at the tail of the formed foil are oppositely arranged along the length direction of the formed foil coil 1, and the specific volume values of the specific volume test points 11 are measured;
s2: cutting a plurality of formed foil cakes with a certain width D on the formed foil roll 1 according to the size of the capacitor to be produced to obtain the minimum specific value V of the specific volume test point 11 on each cake of formed foilmin；
S3: the capacitance capacity C of the capacitor to be produced, the width D of the formed foil cake, and the minimum specific value V of the specific volume test point 11 on the formed foil cakeminAnd knowing the coefficient K, it is known that the length of each slit to be cut into foil L = C/(K V)minD), cutting a plurality of formed foils with the length of L on the formed foil cake in sequence;
s4: repeating the above operations S2-S3 until the roll-formed foil is cut.
The number of the specific volume test points 11 at the roll head position and the roll tail position is five, for the convenience of description of the technical scheme of the embodiment, the specific volume test points 11 at the roll head position are numbered (i) - (fif) in sequence, and the specific volume test points 11 at the roll tail position are numbered (c) - (r) in sequence, wherein the reference number (i) and the reference number (c) are arranged oppositely along the length direction of the formed foil roll 1.
The total width of the formed foil roll 1 in this embodiment is W =500mm, the width of 7mm is left on both sides of the formed foil roll 1 as leftover material, the width of the formed foil cake D =54mm, and ((500mm-14mm)/54 mm/cake) =9 cake formed foil cake can be cut.
In this embodiment, taking a batch of formed foil roll 1 with a total length of 400m as an example, the specific values of 10 specific volume test points 11 of the batch of formed foil roll 1 are shown in table 1 below:
TABLE 1 specific volume test point 11 specific volume value
Assuming that the formed foil roll 1 is unfolded, the formed foil roll 1 with the width of 500mm is divided into 5 areas, the widths of the 5 areas are respectively 40mm, 140mm and 40mm from left to right, and the specific volumes of the 5 areas are respectively the minimum specific volume value of (c), (d) and (c). After division, when the formed foil cake is cut, the minimum specific volume value V of the specific volume test point 11 in the area is obtained by calculating the specific volume of each cut formed foil cakeActual min。
1. The formation foil utilization rate of the application is higher:
the batch of formed foil roll 1 is planned to cut 54mm × 9 cakes, the cutting effective width is 54 mm/cake × 9 cake =486mm, and two sides of the formed foil roll 1 are 7mm and 14mm respectively as leftover materials to be used as waste. When the original calculation method is adopted, the specific volumes of the cut 9 cakes formed into the foil cakes are all 0.379uf/cm at the lowest point of (r) - (R)2After the formed foil roll 1 is divided into areas by the method, the specific volumes of the 9-pie formed foil cakes are respectively the minimum specific volume values V of the specific volume test points 11 of the areas where the 9-pie formed foil cakes are locatedActual min。
In producing a capacitor of a certain capacity, the target capacity is CTarget=K*V*S=K*0.38uf/cm254mm 4200mm, the specific volume of a cake is VActual minThe actual cutting width of the formed foil cake is 54mm, and the actual cutting length is LPractice ofThen C isTarget=K*Vmin*54mm*LPractice of，LPractice of=0.38*4200/VActual minThe number of capacitors produced by the formed foil cake with the cake length of 400m is 400m/LPractice ofCalculated and compared as shown in the following table 2:
TABLE 2 comparison of data for original crop method and crop method of the present application
And the same cake is formed into a foil cake, and after the cutting method is adopted, the manufacturing number of the capacitors is increased from 846 to 857, and the yield is increased by 1.3%.
2. The capacitor capacity consistency of the application is better:
target capacity of CTargetWhere C is capacitance, K is coefficient, V is formed foil specific volume, D is formed foil width (selected according to capacitor size specification, kept constant), and L is open length.
When the original cutting method is adopted, no matter the actual minimum specific volume of each formed foil cake, the minimum specific volume V of the whole formed foil roll 1 is uniformly determinedminCalculating the length of the split to obtain LmaxAt this time, there is CTarget=K*Vmin*D*Lmax. When using a cake with an actual minimum specific volume of VActual minWhen forming into foil cake, if the length of the split sheet is still LmaxDue to the inevitable presence of VActual min>VminAt this time CPractice of=K*VActual min*D*LmaxThus CPractice of>CTargetI.e. the actual capacitance will be larger than the target capacitance.
When the cutting method is adopted for calculation, the actual minimum specific volume of each formed foil cake is used as VActual minCalculating the length of the split to obtain LActual max，CPractice of=K*VActual min*D*LActual max，CPractice ofWill also be closer to the target capacity CTargetTherefore, the consistency of the capacitance capacity is better when the trimming method is adopted for calculation.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one device or feature to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (3)
1. A cutting method of formed foil is characterized in that: the method comprises the following steps:
s1: a plurality of specific volume test points (11) are marked at the head position and the tail position of a rolled foil, the number of the specific volume test points (11) at the head of the rolled foil is opposite to that of the specific volume test points (11) at the tail of the rolled foil, and the specific volume test points (11) at the head of the rolled foil and the specific volume test points (11) at the tail of the rolled foil are distributed in sequence along the width direction of the rolled foil (1), the specific volume test points (11) at the head of each group of rolled foil and the specific volume test points (11) at the tail of the rolled foil are arranged oppositely along the length direction of the rolled foil (1), and the specific volume value of each specific volume test point (11) is measured;
s2: cutting a plurality of formed foil cakes with a certain width D on a formed foil roll (1) according to the size of a capacitor to be produced to obtain the minimum specific value V of a specific volume test point (11) on each cake of formed foilmin；
S3: from the capacitance C of the capacitor to be producedThe width D of the formed foil cake and the minimum specific capacity value V of the specific capacity test point (11) on the formed foil cakeminAnd knowing the coefficient K, it is known that the length of each slit to be cut into foil L = C/(K V)minD), cutting a plurality of formed foils with the length of L on the formed foil cake in sequence;
s4: repeating the above operations S2-S3 until the roll-formed foil is cut.
2. The method for cutting formed foil according to claim 1, wherein: the number of specific volume test points (11) at the head position and the tail position of the coil is five.
3. Cutting method of formed foil according to claim 1 or 2, characterized in that: the total width of the formed foil roll (1) is W =500mm, the width of 7mm is reserved on the two side edges of the formed foil roll (1) as leftover materials, the width of the formed foil cake is D =54mm, and 9 cakes of formed foil cakes can be cut.
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|---|---|---|---|
| CN202110867440.7A CN113314347B (en) | 2021-07-30 | 2021-07-30 | Cutting method of formed foil |
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|---|---|---|---|
| CN202110867440.7A CN113314347B (en) | 2021-07-30 | 2021-07-30 | Cutting method of formed foil |
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| CN113314347B true CN113314347B (en) | 2021-10-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205291035U (en) * | 2015-12-02 | 2016-06-08 | 益阳市格林电子元件有限公司 | Equidistance guillootine of condenser utmost point paper tinsel |
| CN108899208A (en) * | 2018-06-28 | 2018-11-27 | 常州华威电子有限公司 | A kind of contracting body paster electrolytic capacitor of super-low impedance and preparation method thereof |
| CN110196357A (en) * | 2019-06-19 | 2019-09-03 | 南通海星电子股份有限公司 | A kind of electrode foil for aluminum electrolytic capacitors single side specific volume test method |
| CN110634680A (en) * | 2019-07-27 | 2019-12-31 | 南通通成电子有限公司 | Commercial panel long-life fixed aluminum electrolytic capacitor material |
| CN112670088A (en) * | 2020-12-04 | 2021-04-16 | 珠海格力新元电子有限公司 | High-temperature-resistant paster aluminum electrolytic capacitor and manufacturing method thereof |
-
2021
- 2021-07-30 CN CN202110867440.7A patent/CN113314347B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205291035U (en) * | 2015-12-02 | 2016-06-08 | 益阳市格林电子元件有限公司 | Equidistance guillootine of condenser utmost point paper tinsel |
| CN108899208A (en) * | 2018-06-28 | 2018-11-27 | 常州华威电子有限公司 | A kind of contracting body paster electrolytic capacitor of super-low impedance and preparation method thereof |
| CN110196357A (en) * | 2019-06-19 | 2019-09-03 | 南通海星电子股份有限公司 | A kind of electrode foil for aluminum electrolytic capacitors single side specific volume test method |
| CN110634680A (en) * | 2019-07-27 | 2019-12-31 | 南通通成电子有限公司 | Commercial panel long-life fixed aluminum electrolytic capacitor material |
| CN112670088A (en) * | 2020-12-04 | 2021-04-16 | 珠海格力新元电子有限公司 | High-temperature-resistant paster aluminum electrolytic capacitor and manufacturing method thereof |
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