CN210453022U - Laser cutting die suitable for thick pole piece - Google Patents
Laser cutting die suitable for thick pole piece Download PDFInfo
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- CN210453022U CN210453022U CN201921324229.5U CN201921324229U CN210453022U CN 210453022 U CN210453022 U CN 210453022U CN 201921324229 U CN201921324229 U CN 201921324229U CN 210453022 U CN210453022 U CN 210453022U
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Abstract
The utility model discloses a laser cutting die suitable for thick pole piece, including the cutting die board, the fixed cutting die that is provided with a plurality of whole shapes and is "protruding" font in the cutting die board, the cutting die is that long banding cutting blade is made through buckling many times by whole shape, the utility model adopts the above technical scheme, when the thicker lithium battery pole piece of die-cut dressing layer, can not produce the extrusion force to the bed of material, do not extrude then can not produce and fall the material to each of cutting die is buckled and is all is provided with the radius, makes the department of buckling of cutting die more level and smooth, and then can guarantee the pole piece quality, and the pole piece reaches radius department all around and does not have the bed of material to drop.
Description
Technical Field
The utility model relates to a laser cutting die, specific theory relates to a be used for die-cut thick lithium-ion battery pole piece of dressing layer and can reduce the extrusion to the bed of material when die-cut, realize the die-cut laser cutting die who is applicable to thick pole piece that does not fall the material, belong to new forms of energy lithium cell technical field.
Background
In recent years, with the increasing shortage of petroleum resources, new energy industries are increasingly seen, and become national key research projects. As an important component of the new energy industry, the lithium ion battery industry is rapidly developing.
In the manufacturing process of the lithium ion battery, the punching of the pole piece is particularly important, the battery made of the excellent pole piece has excellent performance, and the poor pole piece, such as the pole piece with cut edges and material threads or material slag, can cause short circuit, self-discharge and other adverse effects in the subsequent process.
At present, lithium ion electric passenger cars all require high endurance capacity, so lithium ion batteries all develop towards the direction of high energy density, and in order to improve the energy density of the lithium ion batteries, the coating surface density is increased and the pole piece compaction is promoted in the manufacturing process of the batteries, so that more main materials are put into a fixed volume.
The dressing of battery pole piece can be more and more thick, the pole piece is more and more fragile, and current laser cutting die can cause great extrusion to the dressing layer of pole piece when die-cut thick pole piece, produces the bed of material very easily and drops, and especially the bent angle part of pole piece, what drop obvious marks is bad pole piece, and the pole piece that drops is not obvious continues to circulate, but has the quality hidden danger, and is great to production influence.
The utility model discloses a improve laser cutting die cutting edge, reduce the extrusion to the bed of material when die-cut to realize die-cut not falling the material.
SUMMERY OF THE UTILITY MODEL
The to-be-solved main technical problem of the utility model is to provide a simple structure for die-cut thick lithium-ion battery pole piece in dressing layer just can reduce the extrusion to the bed of material when die-cut, realizes the die-cut laser cutting die who is applicable to thick pole piece that does not fall the material.
In order to solve the technical problem, the utility model provides a following technical scheme:
a laser cutting die suitable for thick pole pieces comprises a cutting die plate, wherein a plurality of cutting dies which are integrally shaped like a Chinese character 'tu' are fixedly arranged on the cutting die plate, and the cutting dies are formed by bending a cutting blade which is integrally shaped like a long strip for many times.
The following is the utility model discloses to above-mentioned technical scheme's further optimization:
when the cutting blade is bent into the cutting die, the butt joint points of the two ends of the cutting blade are located at the middle position of the bottom of the cutting die.
Further optimization: the cutting blade is provided with a cutting edge.
Further optimization: the integral structure of the cutting edge on the cutting blade is a wedge-shaped structure gradually from one side of the cutting blade to the other side, and the wedge-shaped structure is provided with a vertical blade face and a bevel blade face.
Further optimization: the vertical knife face is located on the inner side of the knife die, and the inclined knife face is located on the outer side of the knife die.
Further optimized, the included angle α between the vertical knife face and the inclined knife face is 30-45 degrees.
Further optimization: each bending part of the cutting die is provided with a rounding, and the rounding is R =5mm in size.
Further optimization: the overall shape of the knife template is rectangular plate-shaped.
Further optimization: the cutting die is a laser cutting die.
The above technical scheme is adopted in the utility model, when using, this laser cutting die cooperation is installed and can be used on die-cut equipment, rolls up according to the design requirement, uses the die-cut pole piece that is fixed size of this laser cutting die to the coating material.
The above technical scheme is adopted in the utility model, think about ingenious, rational in infrastructure, when die-cut dressing layer is thicker lithium battery pole piece, can not produce the extrusion force to the bed of material, do not have the extrusion then can not produce and fall the material to each of cutting die is buckled and all is provided with the radius, makes the department of buckling of cutting die more level and smooth, and then can guarantee the pole piece quality, and the pole piece reaches round department all around and does not have the bed of material to drop.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a cutting die according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a cutting blade according to an embodiment of the present invention;
fig. 4 is a side view of fig. 3.
In the figure: 1-cutting a template; 2-cutting a mould; 3-a cutting blade; 4-vertical knife face; 5-a rake face; 6-point of contact.
Detailed Description
Example (b): as shown in fig. 1-4, a laser cutting die suitable for thick pole pieces comprises a cutting die plate 1, wherein a plurality of cutting dies 2 in a convex shape are fixedly arranged on the cutting die plate 1, and the cutting dies 2 are formed by bending a cutting blade 3 in a strip shape in an integral shape for multiple times.
As shown in fig. 1, the overall shape of the blade form 1 is rectangular plate-shaped, and the blade form 1 is mainly made of poplar, birch, basswood.
As shown in fig. 2-3, the cutting blade 3 is bent to form the cutting die 2 according to the shape and size of the pole piece actually required, and the overall shape of the cutting die 2 corresponds to the shape of the pole piece actually required in the production.
When the cutting blade 3 is bent into the cutting die 2, the butt joint point 6 of the two ends of the cutting blade 3 is located at the middle position of the bottom of the cutting die 2.
After the two ends of the cutting blade 3 are butted, the butt joint points 6 at the two ends of the cutting blade 3 are welded.
The cutting die 2 is a laser cutting die which is formed by carrying out high-depth ablation on a cutting template by utilizing the strong energy of laser.
As shown in fig. 2-4, the cutting blade 3 is provided with a blade, and the blade can conveniently punch out neat pole pieces.
The whole structure of the cutting edge on the cutting blade 3 is a wedge-shaped structure gradually from one side of the cutting blade 3 to the other side, and the cutting edge has a vertical blade surface 4 and a bevel blade surface 5.
The vertical knife face 4 is positioned on the inner side of the cutting die 2, and the inclined knife face 5 is positioned on the outer side of the cutting die 2.
The included angle α between the vertical knife face 4 and the inclined knife face 5 is 30-45 degrees.
Design like this, through cutting die 2 when die-cut coating layer thicker lithium-ion battery pole piece, can make perpendicular knife face 4 correspond the pole piece outside, reduce the cutting edge on cutting die 2 and produce the extrusion to the coating layer, directly die-cut pole piece outside limit, and then can reduce the coating layer and fall the emergence of material phenomenon.
When cutting blade 3 formed cutting die 2 of buckling, each department of buckling of cutting die 2 is provided with the radius, the radius is R =5 mm.
Design like this, all be equipped with the radius through each department of buckling at cutting die 2, when making through the thicker lithium-ion battery pole piece of the die-cut dressing layer of cutting die 2, material is difficult to fall in radius department position, improves die-cut quality.
As shown in figures 2-3, the process of manufacturing the cutting die comprises the steps of ①, taking a cutting blade 3 with a certain length, ②, bending and forming the cutting blade 3 by using a computer knife bending machine according to the shape and the size of an actually required pole piece, wherein as shown in figure 3, the vertical knife surface 4 of the cutting blade 3 is arranged outside the inner bevel knife surface 5, the butt joint 6 at the two ends of the cutting blade 3 formed by bending ③ is positioned at the middle position of the bottom of the cutting die 2, welding the butt joint 6, ④, after the welding is finished, installing the manufactured cutting die 2 on the cutting die plate 1, and placing the cutting die 2 at the center position of the cutting die plate 1 to finish the manufacturing of the laser cutting die.
As shown in figures 1-4, when in use, the laser cutting die is installed on punching equipment in a matching way, and the coating material roll is punched into pole pieces with fixed sizes by using the laser cutting die according to design requirements.
Claims (9)
1. The utility model provides a laser cutting die suitable for thick pole piece, includes cutting die board (1), its characterized in that: the cutter template (1) is fixedly provided with a plurality of cutter dies (2) which are integrally shaped like a Chinese character 'tu', and the cutter dies (2) are formed by bending a cutting blade (3) which is integrally shaped like a long strip for a plurality of times.
2. The laser knife die suitable for thick pole pieces of claim 1, wherein: when the cutting blade (3) is bent into the cutting die (2), the butt joint points (6) at the two ends of the cutting blade (3) are positioned at the middle position of the bottom of the cutting die (2).
3. The laser knife die suitable for thick pole pieces of claim 2, wherein: the cutting blade (3) is provided with a cutting edge.
4. The laser knife die suitable for thick pole pieces of claim 3, wherein: the integral structure of the cutting edge on the cutting blade (3) is a wedge-shaped structure gradually from one side to the other side of the cutting blade (3) and is provided with a vertical blade surface (4) and a bevel blade surface (5).
5. The laser knife die suitable for thick pole pieces of claim 4, wherein: the vertical knife face (4) is located on the inner side of the knife die (2), and the inclined knife face (5) is located on the outer side of the knife die (2).
6. The laser knife die suitable for thick pole pieces according to claim 5, characterized in that the included angle α between the vertical knife face (4) and the oblique knife face (5) is 30-45 degrees.
7. The laser cutting die suitable for thick pole pieces according to claim 6, wherein: each department of buckling of cutting die (2) all is provided with the radius, the radius size is R =5 mm.
8. The laser cutting die suitable for thick pole pieces according to claim 7, wherein: the overall shape of the knife template (1) is rectangular plate-shaped.
9. The laser cutting die suitable for thick pole pieces according to claim 8, wherein: the cutting die (2) is a laser cutting die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921324229.5U CN210453022U (en) | 2019-08-15 | 2019-08-15 | Laser cutting die suitable for thick pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921324229.5U CN210453022U (en) | 2019-08-15 | 2019-08-15 | Laser cutting die suitable for thick pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210453022U true CN210453022U (en) | 2020-05-05 |
Family
ID=70451921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921324229.5U Active CN210453022U (en) | 2019-08-15 | 2019-08-15 | Laser cutting die suitable for thick pole piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210453022U (en) |
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2019
- 2019-08-15 CN CN201921324229.5U patent/CN210453022U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201015 Address after: 261000 No.2 workshop, No.9, hatching 1st lane, Yuqing community, Xincheng street, high tech Zone, Weifang City, Shandong Province Patentee after: Shandong Juneng lithium battery technology Co., Ltd Patentee after: Weifang Energy-accumulating Battery Co.,Ltd. Address before: 261000 Bohai Road, Yangzi Street, Binhai District, Weifang City, Shandong Province, and the intersection of Dongerjie, Xiangjiang Patentee before: Weifang Energy-accumulating Battery Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A laser knife die suitable for thick pole piece Effective date of registration: 20220323 Granted publication date: 20200505 Pledgee: Weifang Bank Co.,Ltd. Xincheng sub branch Pledgor: Weifang Energy-accumulating Battery Co.,Ltd. Registration number: Y2022980002981 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |