CN113246208A - Guide roller for preventing wide copper foil from being tightened and electrolytic copper foil splitting machine - Google Patents
Guide roller for preventing wide copper foil from being tightened and electrolytic copper foil splitting machine Download PDFInfo
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- CN113246208A CN113246208A CN202110740684.9A CN202110740684A CN113246208A CN 113246208 A CN113246208 A CN 113246208A CN 202110740684 A CN202110740684 A CN 202110740684A CN 113246208 A CN113246208 A CN 113246208A
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- copper foil
- side thread
- wide
- thread section
- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/08—Means for treating work or cutting member to facilitate cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a guide roller for preventing a wide copper foil from being pulled tightly and an electrolytic copper foil splitting machine; belongs to the technical field of electrolytic copper foil of new energy automobile power batteries; the technical key points comprise that: a first side thread section and a second side thread section are arranged on the surface of the guide roller, and the first side thread section and the second side thread section are symmetrically arranged; the first side thread segments are oppositely threaded to the second side thread segments. By adopting the guide roll for preventing the tightening of the wide copper foil and the electrolytic copper foil splitting machine, the problem that the wide copper foil is wrinkled in a large amplitude in the copper foil splitting process can be solved.
Description
Technical Field
The invention relates to the field of electrolytic copper foil for new energy automobile power batteries, in particular to a guide roller for preventing a wide copper foil from being pulled tightly and an electrolytic copper foil splitting machine.
Background
The slitting process is a necessary process for electrolytic copper foil.
The applicant has conducted electrolytic copper foil and found the following problems:
as shown in the attached fig. 1-2 of the specification, when the copper foil is cut, the foil with large width can be tightened to the middle when the copper foil is cut, and the copper foil roll can be wrinkled; to address this problem, the applicant has adopted a human method: when the splitting machine is started, the middle part of the copper foil is manually beaten with a light pearl cotton stick with a reasonable force at a reasonable frequency, and the middle tightening stripes are dispersed, so that the foil surface is not tightened.
However, the manual method has a problem that it is difficult to grasp the method; moreover, the frequency is gradually reduced by long-time knocking, and the foil surface to be knocked is marked by knocking after long-time knocking, so that multiple complaints of customers are caused.
For the above problems, the applicant searched EPO, CNKI, Himmpat:
1, effective results obtained by copper foil and slitting and tightening search are 0;
2, copper foil and slitting and (wrinkle or line), and the effective result obtained by searching is still 0;
that is, the prior art documents do not report that the foil is largely wrinkled in the slitting process of the copper foil. And how to deal with the problems is not researched by related enterprises.
Disclosure of Invention
The invention aims to provide a guide roller for preventing the wide copper foil from being drawn tightly and an electrolytic copper foil splitting machine aiming at the defects of the prior art.
A guide roller for preventing a wide copper foil from being pulled tightly is characterized in that a first side thread section (3-1) and a second side thread section (3-2) are arranged on the surface of the guide roller, and the first side thread section (3-1) and the second side thread section (3-2) are symmetrically arranged; the rotating directions of the first side thread section (3-1) and the second side thread section (3-2) are opposite;
the slope k of the guide roll is: 1/650-1/750; diameter of end of guide roll is DEnd partThe diameter of the guide roller at the symmetrical part of the first side thread section (3-1) and the second side thread section (3-2) is D1The length (along the direction of the central axis of the guide roller) from the end part of the guide roller to the symmetrical part of the first side thread section (3-1) and the second side thread section (3-2) is L, and K is equal to D1-DEnd part)/2L；
The distance a between the width of the grooves between the threads along the direction of the central axis is 1.3-1.6 mm, and the distance b between the grooves between the threads along the direction of the central axis is 4.2-4.8 mm;
the depth d of the thread groove is 0.8-1.0 mm;
the angle beta of the outward rotation of the screw thread is 10-15 degrees;
the inclination angle gamma of the screw thread is 75-83 degrees;
further, k is 1/700, a is 1.5mm, b is 3mm, β is 12 °, γ is 80 °, and d is 0.8 mm.
Further, D1＝220mm，DEnd part＝200mm，L＝700mm。
Furthermore, the symmetrical positions of the first side thread section (3-1) and the second side thread section (3-2) are superposed with the central position of the guide roll for preventing the wide copper foil from being pulled tightly.
An electrolytic copper foil wide foil slitting machine, comprising: the device comprises an unwinding roller (1), a splitting mechanism (2), a near winding roller guide roller (3) and a winding roller (4); after the electrolytic copper foil is unreeled from the unreeling roller (1), the wide foil copper foil obtained after passing through the slitting mechanism (2) passes through a near-wind-up roller guide roller (3) and then is wound on a wind-up roller (4); the near-winding roller guide roller (3) adopts the wide copper foil anti-tightening guide roller.
Further, the wide foil is a copper foil having a width of 800mm or more.
Further, the center position of the wide foil obtained by the splitting mechanism (2) corresponds to the center position of the guide roller (3) close to the winding roller.
The beneficial effect of this application lies in:
first, a first invention of the present application is: the applicant has found that: when the copper foil is cut, the obtained wide foil has the phenomenon of tightening stripes; this phenomenon is first reported in the present application.
Second, the second invention of the present application is: the guide roll for preventing the wide copper foil from being drawn tightly is provided; and secondly, the guide roller (3) close to the winding roller adopts the guide roller for preventing the tightening of the wide copper foil (other guide rollers have no effect when adopting the guide rollers for preventing the tightening of the wide copper foil).
Third, the third invention of the present application is: the application provides a guide roll for tightening is prevented taking out by broad width copper foil, and the core problem of its solution is: the problem of copper foil indentation.
Drawings
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
Fig. 1 is a schematic view (field diagram) of the crystallization characteristics of a copper foil-side end plate.
Fig. 2 is a graph of the effect of the implementation of the embodiment of the present application (field diagram).
Fig. 3 is a design view of an electrolytic copper foil slitting machine of the present application.
Fig. 4 is a design view of a guide roll for preventing a wide copper foil from being pulled out according to the present invention.
Fig. 5 is a design view of a thread segment of the anti-galling guide roll for a wide copper foil according to the present invention.
Fig. 6 is a wide foil (field view) after analysis using the slitting machine of the present application.
Detailed Description
The first embodiment.
First, problem discovery
As described in the background section: when the copper foil is cut, the large-width foil is tightened towards the middle when the copper foil is cut, and a copper foil roll is wrinkled.
After a large amount of data analysis: when the copper foil obtained by slitting is more than 800mm, wrinkling is very likely to occur. For example: 1400mm of raw foil is cut into three parts: 300mm +800mm +300mm, the 800mm copper foil slitting part will appear wrinkling, and 300mm will appear wrinkling with low probability.
That is, the smaller the width of the copper foil after slitting, the lower the possibility of occurrence of the wrinkling phenomenon.
Second, analysis of cause
The reason why the foil surface of the copper foil is wrinkled is as follows:
1) for a splitting machine, copper foil passes through 7-9 shafts from unwinding to winding, namely the number of the passing shafts is large;
2) the shaft to shaft spacing need not be equidistant;
3) the bearings at the two ends of the shaft do not necessarily make the two ends of the shaft not swing;
4) the shaft diameter is not always equal after the shaft is used for a long time;
5) all axes are not necessarily horizontally parallel;
6) the foil face thickness is not necessarily uniform;
the reasons 1 to 6 are actually present in the foil producing machine and the post-treatment, but the wrinkling problem is hardly caused in the foil producing machine and the post-treatment machine (the width of the foil producing machine is larger).
The reason for this is that: for a splitting machine, the winding speed of the copper foil is high; in addition, the slitting knife is used for dividing the copper foil into a plurality of parts; the above results in: the tension of the copper foil of the splitting machine is larger (it can be understood that the tension of the copper foil by winding of the winding roller is larger), and the tension of the copper foil of different rolls is different due to the fact that a plurality of winding rollers are arranged in the splitting machine.
And for the reasons 2-6, the tension field distribution in the copper foil is also different, the difference is more obvious along with the increase of the amplitude of the copper foil, and the final expression form is wrinkling.
Third, the idea of solution
According to the foregoing analysis of causes, the technical route of the applicant is as follows:
in the first technical scheme, the manual method is changed into a machine method, namely, the copper foil is also subjected to drawing beating (this is true). Although the technical scheme is the scheme which is most easily thought by the applicant, the beating method has very high requirements on frequency and beating strength control. Research needs to be conducted for various situations. Therefore, a very good effect cannot be achieved by the machine method, i.e., the problem of wrinkling of the copper foil cannot be completely eradicated.
In this regard, applicants need to overcome the prejudice of the prior knowledge that, in view of the mechanism by which copper foil wrinkling occurs, it is due to the non-uniformity of the tension field. In this regard, the applicant proposes the following design:
an electrolytic copper foil wide foil slitting machine, comprising: the device comprises an unwinding roller 1, a splitting mechanism 2, a near winding roller guide roller 3 and a winding roller 4; after the electrolytic copper foil is unreeled from the unreeling roller 1, the wide foil copper foil obtained after the slitting mechanism 2 passes through the near-wind-up roller guide roller 3 and then is reeled onto the reeling roller 4.
The design of the near wind-up roller guide roller 3 is as follows:
a first side thread section 3-1 and a second side thread section 3-2 are arranged on the surface close to the winding roller guide roller 3, and the first side thread section 3-1 and the second side thread section 3-2 are symmetrically arranged (namely the rotating directions of the first side thread section 3-1 and the second side thread section 3-2 are opposite); the first side thread section 3-1 and the second side thread section 3-2 correspond to copper foils, and the central positions of the first side thread section 3-1 and the second side thread section 3-2 correspond to the central positions of the copper foils after slitting.
Principle and problem:
theoretically: the reason that the copper foil wrinkles is the uneven tension field, but the friction force between the copper foil and the near winding roller guide roller 3 is utilized (when the near winding roller guide roller 3 rotates rapidly, the copper foil can be subjected to the friction forces F1 and F2 from the middle to the two ends, so that the copper foil expands towards the two ends, and the copper foil wrinkles are avoided), and the problem that the copper foil wrinkles when being cut is solved.
However, the above design also has the following problems:
the electrolytic copper foil is very thin, only a few μm, and passes through the thread segments, which results in embossing of the copper foil (as described in paragraph 0005 of JP2008290834A specification: the trace of the indentation of the aluminum foil does not disappear), which is unacceptable.
For the above reasons, the design of the above-described near-wind-up roller guide roller 3 is not preferable.
For the above embossing problem, the applicant has adopted the following combination design to solve:
1) the slope of the near wind-up roller guide roller 3 is: 1/650-1/750, preferably 1/700 (e.g., 220mm diameter at the ends, 220mm diameter at the center; 1400mm length of the roll);
2) the distance a between the width of the grooves between the threads along the direction of the central axis is 1.3-1.6 mm, and the distance b between the grooves between the threads along the direction of the central axis is 4.2-4.8 mm; preferably, a is 1.5mm and b is 3mm (groove width and groove spacing are the core, not only in relation to the ratio between the two, but also in relation to the specific dimensions);
3) the depth d of the thread groove is 0.8-1.0 mm;
4) the angle beta of the outward rotation of the screw thread is 10-15 degrees (when the angle beta is less than 10 degrees, the provided expansion force is small, and the tightening phenomenon cannot be solved; greater than 15 ° can result in indentation);
5) the angle γ at which the threads are inclined is 80 °.
Namely, the above 1) +2) +3) +4) +5), the problem of copper foil creasing is solved.
Here, the parameters 1) to 5) are completely different for different metal materials, for example: the applicant tested aluminium foil, 0.8mm for a and 2.5mm for b, to avoid indentation.
The field diagram of the present application is shown in fig. 6 (k: 1/700, a: 1.5mm, b: 3mm, β: 12 °, γ: 80 °).
With the design of the present application, the resulting wide foil eliminates the phenomenon of tight banding (post slitting copper foil) as shown in fig. 6. Further, after the treatment at the high temperature of 150 ℃, no tightening stripe appears; thus meeting the performance requirements of the electrolytic copper foil for the lithium battery.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (7)
1. A guide roller for preventing a wide copper foil from being pulled tightly is characterized in that a first side thread section (3-1) and a second side thread section (3-2) are arranged on the surface of the guide roller, and the first side thread section (3-1) and the second side thread section (3-2) are symmetrically arranged; the rotating directions of the first side thread section (3-1) and the second side thread section (3-2) are opposite;
the method is characterized in that the slope k of the guide roll is as follows: 1/650-1/750; diameter of end of guide roll is DEnd partThe diameter of the guide roller at the symmetrical part of the first side thread section (3-1) and the second side thread section (3-2) is D1The length from the end part of the guide roller to the symmetrical part of the first side thread section (3-1) and the second side thread section (3-2) is L, and K is equal to (D)1-DEnd part)/2L；
The distance a between the width of the grooves between the threads along the direction of the central axis is 1.3-1.6 mm, and the distance b between the grooves between the threads along the direction of the central axis is 4.2-4.8 mm;
the depth d of the thread groove is 0.8-1.0 mm;
the angle beta of the outward rotation of the screw thread is 10-15 degrees;
the inclination angle gamma of the screw thread is 75-83 degrees.
2. The guide roll for preventing a copper foil from being pulled out as claimed in claim 1, wherein k is 1/700, a is 1.5mm, b is 3mm, β is 12 °, γ is 80 °, and d is 0.8 mm.
3. The anti-take-up guide roll for wide copper foil according to claim 1, wherein D is1＝220mm，DEnd part＝200mm，L＝700mm。
4. The anti-galling guide roll for a wide copper foil according to claim 1, wherein the symmetrical positions of the first side thread segments (3-1) and the second side thread segments (3-2) coincide with the central position of the anti-galling guide roll for a wide copper foil.
5. An electrolytic copper foil wide foil slitting machine, comprising: the device comprises an unwinding roller (1), a splitting mechanism (2), a near winding roller guide roller (3) and a winding roller (4); after the electrolytic copper foil is unreeled from the unreeling roller (1), the wide foil copper foil obtained after passing through the slitting mechanism (2) passes through a near-wind-up roller guide roller (3) and then is wound on a wind-up roller (4);
characterized in that the guide roll (3) close to the winding roll adopts the guide roll for preventing the tightening of the wide copper foil according to any one of claims 1 to 4.
6. The wide foil slitting machine for electrolytic copper foil according to claim 5, wherein the wide foil is a copper foil having a width of 800mm or more.
7. The electrolytic copper foil wide foil slitting machine according to claim 5, characterized in that the center position of the wide foil obtained by the slitting mechanism (2) corresponds to the center position near the wind-up roll guide roll (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740684.9A CN113246208B (en) | 2021-06-30 | 2021-06-30 | Guide roller for preventing wide copper foil from being tightened and electrolytic copper foil splitting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740684.9A CN113246208B (en) | 2021-06-30 | 2021-06-30 | Guide roller for preventing wide copper foil from being tightened and electrolytic copper foil splitting machine |
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| Publication Number | Publication Date |
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| CN113246208A true CN113246208A (en) | 2021-08-13 |
| CN113246208B CN113246208B (en) | 2021-12-07 |
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| CN202110740684.9A Active CN113246208B (en) | 2021-06-30 | 2021-06-30 | Guide roller for preventing wide copper foil from being tightened and electrolytic copper foil splitting machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10320766A (en) * | 1997-05-20 | 1998-12-04 | Sony Corp | Sheet-like base body traveling carrier device and coating film material manufacturing device equipped with the device |
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| CN201900149U (en) * | 2010-12-06 | 2011-07-20 | 西南铝业（集团）有限责任公司 | Flattening guide roller |
| CN203545265U (en) * | 2013-09-03 | 2014-04-16 | 杭州添丽装饰纸有限公司 | Paper wrinkle-resistance guide roll |
| CN204725949U (en) * | 2015-07-09 | 2015-10-28 | 黑龙江同禹傲思铝业股份有限公司 | A kind of aluminium foil exhibition wrinkle dry compound machine |
| CN205368889U (en) * | 2016-02-04 | 2016-07-06 | 诸葛宝钧 | Paper roll is led to two -way spiral |
| CN206427840U (en) * | 2016-12-22 | 2017-08-22 | 河北卓然睿和自动化科技有限公司 | A kind of towel blank guillotine cropped area blank flattening mechanism |
| WO2019041798A1 (en) * | 2017-08-30 | 2019-03-07 | 南通海星电子股份有限公司 | Foil conveying device for forming machine and operation principle thereof |
| CN210655580U (en) * | 2019-06-17 | 2020-06-02 | 乐美包装（昆山）有限公司 | Stretching roller |
| CN112210928A (en) * | 2020-10-09 | 2021-01-12 | 博森纺织科技股份有限公司 | Novel scutching washing machine |
| CN112517635A (en) * | 2020-12-02 | 2021-03-19 | 欣旺达电动汽车电池有限公司 | Roller assembly, coating device and rolling device |
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2021
- 2021-06-30 CN CN202110740684.9A patent/CN113246208B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10320766A (en) * | 1997-05-20 | 1998-12-04 | Sony Corp | Sheet-like base body traveling carrier device and coating film material manufacturing device equipped with the device |
| JP2008290834A (en) * | 2007-05-23 | 2008-12-04 | Rock Giken Kogyo Co Ltd | Guide roll of printing machine and its manufacturing method |
| CN201900149U (en) * | 2010-12-06 | 2011-07-20 | 西南铝业（集团）有限责任公司 | Flattening guide roller |
| CN203545265U (en) * | 2013-09-03 | 2014-04-16 | 杭州添丽装饰纸有限公司 | Paper wrinkle-resistance guide roll |
| CN204725949U (en) * | 2015-07-09 | 2015-10-28 | 黑龙江同禹傲思铝业股份有限公司 | A kind of aluminium foil exhibition wrinkle dry compound machine |
| CN205368889U (en) * | 2016-02-04 | 2016-07-06 | 诸葛宝钧 | Paper roll is led to two -way spiral |
| CN206427840U (en) * | 2016-12-22 | 2017-08-22 | 河北卓然睿和自动化科技有限公司 | A kind of towel blank guillotine cropped area blank flattening mechanism |
| WO2019041798A1 (en) * | 2017-08-30 | 2019-03-07 | 南通海星电子股份有限公司 | Foil conveying device for forming machine and operation principle thereof |
| CN210655580U (en) * | 2019-06-17 | 2020-06-02 | 乐美包装（昆山）有限公司 | Stretching roller |
| CN112210928A (en) * | 2020-10-09 | 2021-01-12 | 博森纺织科技股份有限公司 | Novel scutching washing machine |
| CN112517635A (en) * | 2020-12-02 | 2021-03-19 | 欣旺达电动汽车电池有限公司 | Roller assembly, coating device and rolling device |
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| CN113246208B (en) | 2021-12-07 |
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