CN216990398U

CN216990398U - Laser cutting and dust removing device for tab forming

Info

Publication number: CN216990398U
Application number: CN202220538345.2U
Authority: CN
Inventors: 刘康杰; 项安; 常洪文; 孙东腾; 李鸿增
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-19
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to a laser cutting and dust removing device for tab forming, which can comprise a laser assembly, a clamping mechanism, a cutting and forming cavity and a dust removing assembly, wherein the laser assembly is arranged to be aligned with a window of the cutting and forming cavity and used for generating required laser, the clamping mechanism is used for clamping a pole piece so as to ensure that the pole piece cannot shake in the laser cutting process, the pole piece moves from top to bottom and penetrates through the cutting and forming cavity, and the dust removing assembly is communicated with the cutting and forming cavity so as to remove foreign matters generated in the laser cutting and forming process. The dust removing device is simple in structure and convenient to use, and can effectively sweep dust in the cutting forming cavity, so that the purposes of dust removal and cleaning are achieved, and the quality of die cutting is improved.

Description

Laser cutting and dust removing device for tab forming

Technical Field

The utility model relates to the technical field of power battery production, in particular to a laser cutting and dust removing device for tab forming.

Background

The lithium ion battery is a rechargeable battery, has the advantages of high energy density, high working voltage, long cycle life, high environmental friendliness and the like, and has a good application prospect in the aspects of mobile power supplies, vehicles and other equipment.

In the utmost point ear processing link of power lithium cell, the bottleneck that traditional five metals cross cutting technique exists has just been prominent day by day, including the development requirement that machining efficiency is low, the application flexibility is poor, can't adapt to intelligent manufacturing, and the laser utmost point ear cutting technique that replaces then becomes the new route that reduces power lithium cell utmost point ear piece manufacturing cost, promotes product stability.

Laser die cutting is a novel die cutting technology, laser replaces a traditional die cutting plate, a die cutting route of the laser is controlled by a scanning galvanometer, rapid and accurate real-time variable die cutting processing can be carried out according to product requirements, one side edge of a pole piece is cut into a pole lug through laser beams, along with the development of the industry, the requirement on the performance of equipment is higher and higher, and particularly the production efficiency is higher and higher. However, the cell safety of the lithium ion battery is always the focus of attention of the people in the industry, and this is also the key of the long-term development of the power battery, and with the rapid development of the power battery in these years, the importance of the problem is increasingly prominent.

The bottleneck that present laser cross cutting pole piece exists mainly is dust and burr problem, and dust and burr have directly decided the quality of cross cutting, and burr and dust that produce in the cross cutting process cause the battery short circuit easily, directly influence the product quality of lithium cell electricity core.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a laser cutting and dust removing device for tab forming, which is suitable for pole pieces with different specifications, can automatically cut and solves the problem of pollution of dust and the like to the pole pieces in the cutting process.

In order to realize the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a be used for fashioned laser cutting of utmost point ear and dust collector, it can include laser subassembly, fixture, cutting shaping cavity and dust removal subassembly, laser subassembly arranges into to aim at the window of cutting shaping cavity for produce required laser, fixture is used for cliping the pole piece, in order to ensure the pole piece can not rock at the laser cutting in-process, the pole piece passes from the top down motion cutting shaping cavity, dust removal subassembly with cutting shaping cavity intercommunication to get rid of the foreign matter that produces in the laser cutting shaping in-process.

In a preferred embodiment, the laser assembly includes a laser emitter, a beam expander and a galvanometer, and the laser emitted by the laser emitter passes through the beam expander and the galvanometer in sequence to obtain the required laser.

In a preferred embodiment, the laser assembly is mounted on a linear motion module to adjust the distance between the laser assembly and the cutting cavity.

In a preferred embodiment, the linear motion module is an electric screw type linear motion module.

In a preferred embodiment, the clamping mechanism comprises an upper right clamping roller, a lower right clamping roller and a movable left clamping roller which are arranged on two sides above the upper opening of the cutting and forming cavity, and the left clamping roller is positioned between the upper right clamping roller and the lower right clamping roller and can move relative to the upper right clamping roller and the lower right clamping roller.

In a preferred embodiment, the clamping mechanism further comprises a left suction block positioned in the cutting and forming cavity, and the left suction block is provided with a plurality of rows of vacuum suction holes facing the pole piece.

In a preferred embodiment, the dust removal assembly comprises a vacuum adsorption belt mechanism, a left ion air knife, a right ion air knife and a dust hood, wherein the vacuum adsorption belt mechanism is used for taking away foreign matters generated during laser cutting; the left ion air knife and the right ion air knife are arranged on the left side and the right side of the pole piece and used for blowing dust generated during laser cutting; the dust hood is arranged on the rear side of the cutting and forming cavity and used for sucking away dust.

In a preferred embodiment, the vacuum adsorption belt mechanism comprises a motor, an active belt roller, an upper driven roller, a lower driven roller, a vacuum belt and a dust suction cavity, the active belt roller is fixedly connected to an output shaft of the motor, the upper driven roller and the lower driven roller are installed in the cutting and forming cavity, the vacuum belt is wound on the active belt roller, the upper driven roller and the lower driven roller, the vacuum belt part between the upper driven roller and the lower driven roller is close to a pole piece in parallel, and the dust suction cavity and the pole piece are respectively located on the inner side and the outer side of the vacuum belt.

In a preferred embodiment, the vacuum adsorption belt mechanism and the laser assembly are respectively positioned on the left side and the right side of the cutting and forming cavity.

In a preferred embodiment, the installation angle of the left ion air knife and the right ion air knife is adjustable.

By adopting the technical scheme, the die-cutting device has the beneficial effects that the die-cutting device is simple in structure and convenient to use, and can effectively sweep and clean dust in a cutting and forming cavity, so that the purposes of dust removal and cleaning are achieved, and the die-cutting quality is improved.

Drawings

Fig. 1 is a perspective view of a laser cutting and dust removing device for tab formation according to the present invention;

fig. 2 is another perspective view of the laser cutting and dust removing device for tab formation shown in fig. 1;

fig. 3 is a perspective view of a laser assembly of the laser cutting and dust removing device for tab formation shown in fig. 1;

fig. 4 is a perspective view of a clamping mechanism of the laser cutting and dust removing device for tab formation shown in fig. 1;

fig. 5 is a perspective view of a vacuum adsorption belt mechanism of the laser cutting and dust removing device for tab formation shown in fig. 1.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the essential spirit of the technical solution of the present invention.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 and 2, a laser cutting and dust removing device for tab formation may include a laser assembly 1, a clamping mechanism 2, a cutting and forming cavity 3, and a dust removing assembly, wherein the laser assembly 1 is disposed to align with a window 31 of the cutting and forming cavity 3 for generating a required laser. The pole piece 100 moves at a certain speed from top to bottom through the cut forming cavity 3. The clamping mechanism 2 is used for clamping the pole piece 100, so as to ensure that the pole piece does not shake (front and back and/or left and right) in the laser cutting process, and avoid the occurrence of defective products. The dust removing assembly is communicated with the cutting and forming cavity 3 to remove foreign matters (such as dust, scraps and the like) generated in the laser cutting and forming process.

As shown in fig. 3, the laser module 1 may include a laser emitter 11, a beam expander 12, and a galvanometer 13, where laser emitted from the laser emitter 11 is adjusted by the beam expander to collimate a laser beam, and then an outgoing angle of the laser is adjusted by the galvanometer 13, so as to obtain laser with required energy, beam size, and outgoing angle. That is, the energy, beam size, and exit angle of the laser light emitted by the laser emitter 11 can be adjusted. The laser transmitter 11, the beam expander 12 and the galvanometer 13 are commercially available, and the specific structure thereof will not be described in detail. Preferably, the laser assembly 1 is mounted on a linear motion module 5 to adjust its distance from the cutting cavity 3. In the preferred embodiment, the linear motion module 5 is a commercially available electric screw type linear motion module. Preferably, the driving motor of the electric screw rod type linear motion module is a servo motor or a stepping motor.

As shown in fig. 1 and 4, the clamping mechanism 2 includes an upper right pinch roller 21, a lower right pinch roller 22 and a movable left pinch roller 23 mounted on both sides above the upper opening 32 of the cutting and forming cavity 3, and the left pinch roller 23 is located between the upper right pinch roller 21 and the lower right pinch roller 22 and is movable relative to the upper right pinch roller 21 and the lower right pinch roller 22 to clamp the pole piece 100. The right upper nip roller 21 and the right lower nip roller 22 are rotatably mounted on a right nip roller support base 24. The left nip roll 23 is mounted on a left nip roll support base 26 by a pair of adjusting screws 25 so as to be movable left and right. The position of the left nip roller 23 can be finely adjusted by adjusting the screw 25 to accommodate pole pieces 100 of different thicknesses.

In this embodiment, the clamping mechanism 2 further includes a left suction block 27 located in the cutting and forming cavity 3, and the left suction block 27 has a plurality of rows of vacuum suction holes facing the pole piece 100. The left suction block 27, the right upper clamping roller 21, the right lower clamping roller 22 and the left clamping roller 23 are matched together to clamp the pole piece 100, and the pole piece 100 can be prevented from shaking in the laser cutting process.

Referring to fig. 1, 2 and 5, the dust removing assembly includes a vacuum adsorption belt mechanism 41, a left ion air knife 42, a right ion air knife 43 and a dust hood 44, wherein the vacuum adsorption belt mechanism 41 is used for taking away foreign matters generated during laser cutting. Specifically, the vacuum adsorption belt mechanism 41 includes a motor 411, a driving belt roller 412, an upper driven roller 413, a lower driven roller 414, a vacuum belt 415, and a dust suction chamber 416, wherein the driving belt roller 412 is fixedly connected to an output shaft of the motor 411, for example, directly and fixedly connected, or fixedly connected through a corresponding shaft coupling. An upper driven roller 413 and a lower driven roller 414 are installed in the cutting and forming chamber 3. A vacuum belt 415 is looped around the active belt roller 412, the upper driven roller 413 and the lower driven roller 414, and the portion of the vacuum belt 415 between the upper driven roller 413 and the lower driven roller 414 is parallel to and adjacent to the pole piece 100. The dust suction cavity 416 and the pole piece 100 are respectively located inside and outside the vacuum belt 415 and used for adsorbing foreign matters generated during laser cutting. Meanwhile, foreign matters generated during laser cutting can be sucked by the vacuum belt 415 and taken out of the cutting and forming cavity 3, so that the cutting and forming cavity 3 and the electrode lugs are kept clean. The left ion air knife 42 and the right ion air knife 43 are installed at the left and right of the pole piece 100 and used for blowing dust generated during laser cutting, namely blowing the dust to the dust hood 44, so that the two sides of the pole piece 100 are kept clean. The dust hood 44 is installed at the rear side of the cutting and forming cavity 3 and used for sucking away dust and avoiding overflowing of the dust. In the present embodiment, the dust hood 44 constitutes a rear cover of the cutting and forming chamber 3. The suction hood 44 is in the shape of a quadrangular pyramid with the suction pipe in the middle.

In the present embodiment, the vacuum suction belt mechanism 41 and the laser assembly 1 are respectively located on the left and right sides of the cutting and forming cavity 3.

The installation angle and the wind force of the left ion wind knife 42 and the right ion wind knife 43 can be adjusted to ensure the blowing effect. Specifically, the left ion air knife 42 and the right ion air knife 43 are mounted on the respective rotatable brackets 45, and when the angle is to be adjusted, only the brackets 45 need to be rotated.

While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that various changes and modifications of the utility model can be effected therein by those skilled in the art after reading the above teachings of the utility model. Such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. The utility model provides a be used for fashioned laser cutting of utmost point ear and dust collector, its characterized in that includes laser subassembly, fixture, cutting shaping cavity and dust removal subassembly, laser subassembly arranges into to aim at the window of cutting shaping cavity for produce required laser, fixture is used for cliping the pole piece, in order to ensure the pole piece can not rock at the laser cutting in-process, the pole piece passes from the top down motion cutting shaping cavity, the dust removal subassembly with cutting shaping cavity intercommunication is got rid of the foreign matter that produces in the laser cutting shaping in-process.

2. The device of claim 1, wherein the laser assembly comprises a laser transmitter, a beam expander and a galvanometer, and laser emitted by the laser transmitter passes through the beam expander and the galvanometer in sequence to obtain required laser.

3. The apparatus of claim 1 or 2, wherein the laser assembly is mounted on a linear motion module to adjust its distance from the cut-forming cavity.

4. The apparatus of claim 3, wherein the linear motion module is an electric lead screw type linear motion module.

5. The apparatus of claim 1, wherein the clamping mechanism comprises an upper right clamping roller, a lower right clamping roller and a movable left clamping roller mounted on two sides above the upper opening of the cutting and forming cavity, and the left clamping roller is positioned between the upper right clamping roller and the lower right clamping roller and can move relative to the upper right clamping roller and the lower right clamping roller.

6. The apparatus of claim 5, wherein the clamping mechanism further comprises a left suction block positioned within the cut forming cavity, the left suction block having a plurality of rows of vacuum suction holes facing the pole piece.

7. The device of claim 1, wherein the dust removing assembly comprises a vacuum adsorption belt mechanism, a left ion air knife, a right ion air knife and a dust hood, wherein the vacuum adsorption belt mechanism is used for taking away foreign matters generated during laser cutting; the left ion air knife and the right ion air knife are arranged on the left side and the right side of the pole piece and used for blowing dust generated during laser cutting; the dust hood is arranged on the rear side of the cutting and forming cavity and used for sucking away dust.

8. The apparatus according to claim 7, wherein the vacuum suction belt mechanism comprises a motor, an active belt roller, an upper driven roller, a lower driven roller, a vacuum belt and a dust suction chamber, the active belt roller is fixedly connected to an output shaft of the motor, the upper driven roller and the lower driven roller are installed in the cutting and forming chamber, the vacuum belt is wound around the active belt roller, the upper driven roller and the lower driven roller, the vacuum belt portion between the upper driven roller and the lower driven roller is parallel to and close to a pole piece, and the dust suction chamber and the pole piece are respectively located at the inner side and the outer side of the vacuum belt.

9. The apparatus of claim 7, wherein the vacuum suction belt mechanism and the laser assembly are located to the left and right of the cut-forming cavity, respectively.

10. The apparatus of claim 7, wherein the left ion air knife and the right ion air knife are mounted at an adjustable angle.