CN102962512B - Stainless steel is as the purposes of lithium band carving knife and lithium band carving knife thereof - Google Patents
Stainless steel is as the purposes of lithium band carving knife and lithium band carving knife thereof Download PDFInfo
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- CN102962512B CN102962512B CN201210513430.4A CN201210513430A CN102962512B CN 102962512 B CN102962512 B CN 102962512B CN 201210513430 A CN201210513430 A CN 201210513430A CN 102962512 B CN102962512 B CN 102962512B
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Abstract
The present invention relates to lithium battery metal lithium bands cutting technique field.304 or 316 stainless steels are used as the carving knife material of cutting lithium band, the part surface roughness that carving knife contacts with lithium band is not more than Ra0.025, and carving knife comprises knife face and contact surface, is provided with blade between knife face and contact surface; The surface roughness of knife face, contact surface and blade is not more than Ra0.025.Content disclosed by the invention overcomes the technology prejudice that metal carving knife should not be used for the cutting of lithium band, can the carving knife of the nonmetallic materials such as used match steel and fluoroplastics making in the industry in subrogate country completely, and cutter life is long; Can also improve greatly and cut precision; And almost do not cut burr.<!--1-->
Description
Technical field
The present invention relates to lithium battery metal lithium bands cutting technique field.
Background technology
At present, the cutting knife that domestic lithium battery lithium band fixed length is cut is all adopt match steel (POM) and fluoroplastics.Above two kinds of materials are all nonmetallic materials, and its fatigue strength only has 0.15Mpa, and has the shrinkage factor of 1.2%-3.0%.Its characteristic causes the cutter of machine-shaping mainly to there is following shortcoming: 1. service life is low, usually cuts about 100,000 times and just need change cutting knife; 2. cut low precision (positive and negative 0.15mm); 3. cut burr comparatively obvious.
But; the chemical characteristic of lithium metal is very active; almost produce with all common metal and be adhered; so with common metal do cutting knife all can produce because being adhered cut bad; and; common metal can produce oxidation reaction under natural environment, if the material after burning is stained with on lithium band, directly can affect battery electrical property after entering battery.But large-scale production needs another to stablize with the cutting knife of long service life to meet Production requirement.
The phenomenon that is adhered of iron and lithium metal is better than other metals, but also has and be adhered a little, and the oxide of iron directly can affect battery performance.
Summary of the invention
The object of the present invention is to provide and be a kind ofly applicable to large-scale production and have that long service life, cost are low, the lithium band carving knife of the stainless steel that is easy to the advantages such as processing.
Technical scheme of the present invention is: the purposes of stainless steel carving knife, is characterized in that: carving knife material stainless steel being used as cutting lithium band, the surface roughness of carving knife and lithium band contact portion is not more than Ra0.025.
Preferably, described carving knife comprises knife face and contact surface, is provided with blade between knife face and contact surface; The surface roughness of knife face, contact surface and blade is not more than Ra0.025.
Preferably, described carving knife is by moving cutting knife and quiet cutting knife forms.
Preferred further, be provided with the angle being not more than 90 °, being not less than 85 ° between knife face and contact surface.
Preferably, 304 or 316 stainless steels selected by described stainless steel.
Stainless steel carving knife, is characterized in that: described carving knife comprises knife face and contact surface, is provided with blade between knife face and contact surface; The surface roughness of knife face, contact surface and blade is not more than Ra0.025.
Preferably, the angle being not more than 90 °, being not less than 85 ° is provided with between knife face and contact surface.
Preferably, 304 or 316 stainless steels selected by described stainless steel.
The invention has the beneficial effects as follows: cut technical field at lithium band; because the chemical characteristic of lithium metal very vivaciously all thinks that the carving knife of lithium band should not adopt metal; but by employing 304 or 316 stainless steel; and the surface roughness of carving knife and lithium band contact portion is adhered phenomenon when being not more than Ra0.025 disappears; metal lithium bands every square centimeter of 3 kilograms of pressure are pressed on cutting knife face, also without being adhered phenomenon.Reach beyond thought result of use, overcome the technology prejudice that metal carving knife should not be used for the cutting of lithium band.Utilize the metallic character of carving knife disclosed by the invention simultaneously, and effectively solve based on the lithium band cutting machine that this carving knife designs the shortcoming that in prior art, carving knife is using the short period just again must process the edge of a knife, can the carving knife that makes of the nonmetallic materials such as used match steel (POM) and fluoroplastics in the industry in subrogate country completely, and cutter life can improve 20 times, reach 2,000,000 times; Can also improve greatly and cut precision (positive and negative 0.025); Almost do not cut burr.
Accompanying drawing explanation
Fig. 1 is carving knife structural representation disclosed by the invention
Fig. 2 is the floor map of a kind of purposes of carving knife disclosed by the invention
Fig. 3 is the right view of Fig. 2
Detailed description of the invention
As shown in Figure 1, carving knife 6 comprises knife face 61 and contact surface 62, is provided with blade 63 between knife face 61 and contact surface 62, and the surface of knife face 61, contact surface 62 and blade 63 is all polished to roughness and is not more than Ra0.025.Contact surface 62 refers to the carving knife 6 lower face contacted with lithium band 8 in working order.Be provided with angle α between knife face 61 and contact surface 62, angle α is not more than 90 °, is not less than 85 °.
As shown in Figures 2 and 3, stainless steel carving knife disclosed by the invention is applied to a kind of lithium band cutting machine of lithium band cutting, comprise card slot type saddle 1, the material of saddle 1 is polypropylene (PP), and saddle is provided with screw 2; Pneumatic means 3, pneumatic means 3 is located at above saddle side; The carving knife 6 be made up of dynamic cutting knife 4 and quiet cutting knife 5, carving knife 6 is sheet; Carving knife 6 adopts 304 or 316 stainless steel materials and the surface of knife face 61, contact surface 62 and blade 63 is all polished to roughness is not more than Ra0.025; Quiet cutting knife 5 is fixed on inside saddle 1 draw-in groove by screw 2; Dynamic cutting knife 4 is fixedly connected with the output 7 of pneumatic means 3, and dynamic cutting knife 4 side and saddle 1 one vertical plane are fitted; Lithium band 8 is carried on quiet cutting knife 5, to reduce adjusting frequency of quiet cutting knife 5.
The sheet that is designed to carving knife 6 reduces when dynamic cutting knife 4 is return and the friction of lithium band 8; Saddle 1 is designed to card slot type, can adjust its gap when quiet cutting knife 5 weares and teares; Saddle 1 is also the limited block of cutting knife 4 simultaneously, can ensure the minimum gap between dynamic cutting knife 4 and quiet cutting knife 5.As the supporting plate of lithium band 8 while of quiet cutting knife 5, to reduce adjusting frequency of quiet cutting knife 5.
After use 2,000,000 times, quiet cutting knife 5 and dynamic cutting knife 4 have wearing and tearing.Now, only need unclamp the screw 2 on saddle 1, quiet cutting knife 5 be readjusted the gap with dynamic cutting knife 4, can recover to use.
Due to when stainless steel polishing to roughness is not more than Ra0.025 and the phenomenon that is adhered of lithium band disappear, metal lithium bands every square centimeter of 3 kilograms of pressure are pressed on cutting knife face, also without being adhered phenomenon.Reach beyond thought result of use.In iron, 304 or 316 stainless polishing performances are better, price comparison is cheap, very little surface roughness can be reached, therefore lithium band carving knife can be adopted 304 or 316 stainless steels, and the surface of the knife face of carving knife, contact surface and blade is all polished to roughness is not more than Ra0.025.
Claims (7)
1. stainless steel is as a purposes for lithium band carving knife, it is characterized in that: carving knife material stainless steel being used as cutting lithium band, and described carving knife comprises knife face and contact surface, is provided with blade between knife face and contact surface; The surface of knife face, contact surface and blade is all polished to surface roughness and is not more than Ra0.025, ensures the contact surface adhesion of carving knife and lithium band in cutting process, and contact surface refers to the carving knife lower face contacted with lithium band in working order.
2. stainless steel as claimed in claim 1 is as the purposes of lithium band carving knife, it is characterized in that: described carving knife is by moving cutting knife and quiet cutting knife forms.
3. stainless steel as claimed in claim 1 is as the purposes of lithium band carving knife, it is characterized in that: be provided with between knife face and contact surface and be not more than 90 ° and the angle being not less than 85 °.
4. stainless steel as claimed in claim 1 is as the purposes of lithium band carving knife, it is characterized in that: 304 or 316 stainless steels selected by described stainless steel.
5. a stainless steel lithium band carving knife, is characterized in that: described carving knife adopts stainless steel, and described carving knife comprises knife face and contact surface, is provided with blade between knife face and contact surface; The surface roughness of knife face, contact surface and blade is not more than Ra0.025.
6. stainless steel lithium band carving knife as claimed in claim 5, is characterized in that: be provided with between knife face and contact surface and be not more than 90 ° and the angle being not less than 85 °.
7. the stainless steel lithium band carving knife as described in claim 5 or 6, is characterized in that: 304 or 316 stainless steels selected by described stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513430.4A CN102962512B (en) | 2012-12-04 | 2012-12-04 | Stainless steel is as the purposes of lithium band carving knife and lithium band carving knife thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210513430.4A CN102962512B (en) | 2012-12-04 | 2012-12-04 | Stainless steel is as the purposes of lithium band carving knife and lithium band carving knife thereof |
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| Publication Number | Publication Date |
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| CN102962512A CN102962512A (en) | 2013-03-13 |
| CN102962512B true CN102962512B (en) | 2015-12-02 |
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| CN201210513430.4A Active CN102962512B (en) | 2012-12-04 | 2012-12-04 | Stainless steel is as the purposes of lithium band carving knife and lithium band carving knife thereof |
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| CN1714971A (en) * | 2004-06-29 | 2006-01-04 | Tdk株式会社 | Slitter apparatus and production method of electrode |
| CN201102099Y (en) * | 2007-11-21 | 2008-08-20 | 天津和平安耐高能电池科技有限公司 | Pneumatic lithium electrode cutting machine |
| US7513136B2 (en) * | 2002-09-18 | 2009-04-07 | Bathium Canada Inc. | Lamination process and apparatus for alkali metals or alloys thereof |
| CN201523036U (en) * | 2009-10-14 | 2010-07-07 | 天津力神电池股份有限公司 | Lithium ion battery pole piece cutting tool |
| CN102738433A (en) * | 2012-06-14 | 2012-10-17 | 深圳市赢合科技股份有限公司 | Device for electrode slice production with lithium strap and electrode slice production method |
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| JPS597439A (en) * | 1982-07-06 | 1984-01-14 | Citizen Watch Co Ltd | Punching method of metallic lithium pole |
| JP2011161565A (en) * | 2010-02-09 | 2011-08-25 | Kanefusa Corp | Cutter for cutting electrode |
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2012
- 2012-12-04 CN CN201210513430.4A patent/CN102962512B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513136B2 (en) * | 2002-09-18 | 2009-04-07 | Bathium Canada Inc. | Lamination process and apparatus for alkali metals or alloys thereof |
| CN1714971A (en) * | 2004-06-29 | 2006-01-04 | Tdk株式会社 | Slitter apparatus and production method of electrode |
| CN201102099Y (en) * | 2007-11-21 | 2008-08-20 | 天津和平安耐高能电池科技有限公司 | Pneumatic lithium electrode cutting machine |
| CN201523036U (en) * | 2009-10-14 | 2010-07-07 | 天津力神电池股份有限公司 | Lithium ion battery pole piece cutting tool |
| CN102738433A (en) * | 2012-06-14 | 2012-10-17 | 深圳市赢合科技股份有限公司 | Device for electrode slice production with lithium strap and electrode slice production method |
Non-Patent Citations (1)
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| 金属锂带的加工工艺;许文;《新疆大学学报（自然科学版）》;20030831;第20卷(第3期);第325-327页 * |
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| CN102962512A (en) | 2013-03-13 |
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