Laser cutting mechanism

Abstract

The utility model provides a laser cutting mechanism, which is used for cutting a pole piece and comprises a laser movable cutting unit, a laser movable cutting unit and a laser cutting unit, the laser movable cutting unit can cut the pole piece at a preset position along with the movement of the pole piece; the feeding unit can restrain the pole piece on the feeding unit, and the feeding unit moves along with the rotation of the feeding unit; and the dust removal unit is arranged on the feeding unit so as to collect smoke dust generated when the laser movable cutting unit cuts the pole piece. According to the laser cutting mechanism, the overall quality of the pole piece can be improved by optimizing the cutting mode of the pole piece.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting mechanisms, and particularly relates to a laser cutting mechanism. Background Art

[0002] In the booming development of the new energy industry, lithium batteries, as one of its core driving forces, have become increasingly important. Thanks to their excellent energy storage capacity, no memory effect, high cycle life, and good recyclability, lithium batteries have become an indispensable energy storage solution in the national new energy strategy. However, with the rapid growth of market demand and the continuous improvement of technical standards, more stringent requirements have been put forward for the production efficiency and quality of lithium batteries.

[0003] In the production process of lithium batteries, the lamination technology has gradually become the industry mainstream due to its advantage of significantly improving the energy density and overall quality of the battery core. As the core equipment in the lamination production process, the performance of the laminator directly determines the production efficiency and final quality of lithium batteries. Currently, the laminator generally adopts the slicing method of combining multiple pairs of roller feeding with a hardware cutter. This technology has achieved a certain degree of production automation and efficiency improvement. However, with the continuous acceleration of the production speed, the fixed cutting method of the traditional hardware cutter has gradually revealed its limitations and is difficult to meet the beat requirements of high-efficiency production. At the same time, the strict requirements of the hardware cutter for the state of the tape increase the risk of production failures such as material jams, affecting the stability and continuity of the production line.

[0004] In addition, for wide-width products such as blade batteries, higher requirements are put forward for the processing accuracy and installation accuracy of the roller feeding mechanism. This not only increases the difficulty and complexity of equipment debugging but also easily leads to quality problems such as tape wrinkles, thus affecting the overall quality of the electrode sheet. [[ID=******]] Summary of the Utility Model

[0005] In view of this, the utility model aims to propose a laser cutting mechanism to improve the overall quality of the electrode sheet.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A laser cutting mechanism for cutting an electrode sheet, the cutting mechanism comprising:

[0008] A laser dynamic cutting unit that can cut the electrode sheet at a preset position as the electrode sheet moves;

[0009] A feeding unit that can restrain the electrode sheet on the feeding unit and move as the feeding unit rotates;

[0010] Dust removal unit, which is arranged on the feeding unit to collect the dust generated by the laser dynamic cutting unit when cutting the pole piece.

[0011] Furthermore, the laser dynamic cutting unit includes a plurality of lasers arranged at intervals above the feeding unit along the conveying direction of the feeding unit;

[0012] After the cutting paths of the plurality of lasers are combined, the pole piece is cut off.

[0013] Furthermore, the dust removal unit includes a first dust removal component, which is arranged outside the feeding unit to adsorb the dust generated by the laser dynamic cutting unit.

[0014] Furthermore, the first dust removal component includes a dust removal cover covering the upper part of the feeding unit and a dust removal pipe communicated with the dust removal cover;

[0015] A plurality of avoidance holes are arranged on the dust removal cover, and the laser of the laser dynamic cutting unit can pass through the avoidance holes.

[0016] Furthermore, the feeding unit includes an inner cylinder, an outer cylinder arranged outside the inner cylinder and capable of rotating relative to the inner cylinder, a sealing member arranged between the inner cylinder and the outer cylinder, and a pressure roller arranged outside the outer cylinder;

[0017] A negative pressure unit is arranged on the inner cylinder, and negative pressure adsorption holes communicated with the negative pressure unit are arranged on the surface of the outer cylinder;

[0018] The feeding unit can adsorb the pole piece to the surface of the feeding unit through the negative pressure adsorption holes.

[0019] Furthermore, a first cavity and a second cavity that are not communicated with each other are arranged in the inner cylinder;

[0020] The first cavity is communicated with the negative pressure unit. When the outer cylinder rotates to the position of the first cavity, the negative pressure unit adsorbs the pole piece to the surface of the feeding unit through the negative pressure adsorption holes;

[0021] The second cavity is disconnected from the negative pressure unit. When the outer cylinder rotates to the position of the second cavity, the pole piece is separated from the feeding unit.

[0022] Furthermore, the negative pressure unit includes a negative pressure pipeline arranged in the inner cylinder, and a communication hole communicated with the first cavity is arranged on the negative pressure pipeline.

[0023] Furthermore, a second dust removal component is arranged in the first cavity, and the second dust removal component can adsorb the dust sucked into the first cavity by the negative pressure unit.

[0024] Further, the second dust removal component includes a dust collection cavity disposed in the first cavity and a dust collection pipe communicating with the dust collection cavity.

[0025] Further, a plurality of sinking grooves are provided on the outer cylinder along the circumferential direction of the outer cylinder, and each of the sinking grooves is arranged at intervals along the preset position of the pole piece cutting on the outer cylinder.

[0026] Compared with the prior art, the utility model has the following advantages:

[0027] In the laser cutting mechanism of the utility model, the pole piece is constrained on the feeding unit by the feeding unit so that the laser dynamic cutting unit can cut the pole piece. The laser dynamic cutting unit can cut the pole piece at the preset position of the pole piece by laser, reducing the production risk of material blockage compared with the traditional hardware cutting tool, and facilitating the improvement of the stability and continuity of the production line. The setting of the dust removal unit is conducive to collecting the smoke and dust generated by cutting, thus helping to ensure the overall quality of the pole piece after being cut by the laser cutting mechanism.

[0028] By dividing the preset cutting position of the pole piece into the cutting paths of multiple lasers for splicing, it is convenient to better improve the operation speed of the production line. And through the splicing of the cutting paths of multiple lasers, it is conducive to ensuring the cutting quality of the pole piece, thus helping to improve the overall quality of the pole piece.

[0029] Through the setting of the first dust removal component, it is conducive to absorbing the smoke and dust generated by the laser cutting mechanism on the surface of the pole piece. The structure is simple and conducive to design and implementation.

[0030] Through the cooperation of the dust removal cover and the dust removal pipe, the structure is simple. The setting of the avoidance hole facilitates the arrangement of the dust removal cover on the cutting path of the laser dynamic cutting unit and is convenient for design and implementation.

[0031] The feeding unit includes an inner cylinder, an outer cylinder, a sealing member and a pressure roller. The structure is simple. And through the setting of the negative pressure unit, it is convenient for the feeding unit to adsorb the pole piece, enabling the outer cylinder to rotate relative to the inner cylinder. And compared with the pair-roller conveying, it can eliminate the wrinkles of the pole piece, facilitating the improvement of the production continuity, the transfer of the pole piece, and is conducive to design and implementation.

[0032] Through the setting of the first cavity, it is convenient for the negative pressure unit to adsorb the pole piece through the negative pressure adsorption holes. Through the setting of the second cavity, when the pole piece moves to the position of the second cavity along with the outer cylinder, it can be separated from the outer cylinder, facilitating the transfer of the pole piece to the subsequent working station and is conducive to design and implementation.

[0033] The negative pressure unit includes a negative pressure pipeline provided with communication holes, which is conducive to the formation of negative pressure in the first cavity, and the structure is simple and conducive to design and implementation.

[0034] Through the setting of the second dust removal component, it is convenient for collecting the smoke and dust inhaled into the first cavity and is conducive to design and implementation.

[0035] The second dust removal component includes a dust collection cavity and a dust collection pipe disposed in the first cavity, with a simple structure, facilitating design and implementation. Moreover, the arrangement of the dust collection cavity is conducive to better collecting the soot entering the first cavity.

[0036] Through the arrangement of the sinking groove, it is convenient for the laser dynamic cutting mechanism to cut the pole piece. At the same time, the loss of the laser dynamic cutting mechanism to the feeding unit can be reduced, and the structure is simple and convenient for design and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0038] Figure 1 is a schematic structural diagram of the laser cutting mechanism according to an embodiment of the present invention;

[0039] Figure 2 is a side view of the laser cutting mechanism according to an embodiment of the present invention;

[0040] Figure 3 is Figure 2 a sectional view taken along the line A-A of

[0041] Figure 4 is a front view of the laser cutting mechanism according to an embodiment of the present invention;

[0042] DESCRIPTION OF THE REFERENCE NUMERALS:

[0043] 1. Pole piece;

[0044] 2. Feeding unit;

[0045] 201. Inner cylinder;

[0046] 2011. First cavity; 2012. Second cavity;

[0047] 202. Outer cylinder;

[0048] 2021. Negative pressure adsorption hole; 2022. Driving end; 2023. Sinking groove;

[0049] 203. Pressing roller;

[0050] 3. Dust removal unit;

[0051] 301. First dust removal component; 302. Second dust removal component;

[0052] 3011. Dust removal cover; 3012. Dust removal pipe; 3013. Avoidance hole;

[0053] 3021. Dust collection cavity; 3022. Dust collection pipe;

[0054] 4. Negative pressure unit;

[0055] 401. Negative pressure pipeline. Specific embodiments

[0056] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0057] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0058] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting piece" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0059] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0060] Embodiment 1

[0061] This embodiment relates to a laser cutting mechanism, aiming to improve the overall quality of the pole piece by optimizing the device for cutting the pole piece.

[0062] In terms of the overall structure, as shown in the figure, the laser cutting mechanism of this embodiment is used to cut the pole piece 1. The pole piece 1 cutting mechanism includes a laser dynamic cutting unit (not shown in the figure), a feeding unit 2, and a dust removal unit 3.

[0063] Among them, the laser dynamic cutting unit can move with the pole piece 1 and cut the pole piece 1 at a preset position. The feeding unit 2 can restrain the pole piece 1 on the feeding unit 2 and move with the rotation of the feeding unit 2. The dust removal unit 3 is arranged on the feeding unit 2 to collect the dust generated by the laser dynamic cutting unit when cutting the pole piece 1.

[0064] With the above settings, in the laser cutting mechanism of this embodiment, the feeding unit 2 constrains the electrode sheet 1 on the feeding unit 2 to facilitate the laser dynamic cutting unit to cut the electrode sheet 1. The laser dynamic cutting unit can cut the electrode sheet 1 at a preset position on the electrode sheet 1 through laser. Compared with traditional metal cutting tools, it reduces the production risk of material blockage, and is beneficial to improving the stability and continuity of the production line. The setting of the dust removal unit 3 is conducive to collecting the dust generated by cutting, thereby being beneficial to ensuring the overall quality of the electrode sheet 1 after being cut by the laser cutting mechanism.

[0065] Specifically, in this embodiment, as an exemplary structure, in order to facilitate improving the cutting quality of the laser dynamic cutting unit, the laser dynamic cutting unit of the laser cutting mechanism in this embodiment includes a plurality of lasers arranged at intervals above the feeding unit 2 along the conveying direction of the feeding unit 2. The cutting paths of the plurality of lasers are combined to cut off the electrode sheet 1. By dividing the preset cutting position of the electrode sheet 1 into the combination of the cutting paths of a plurality of lasers, it is convenient to better improve the operating speed of the production line. And through the combination of the cutting paths of a plurality of lasers, it is beneficial to ensure the cutting quality of the electrode sheet 1, and thus is beneficial to improving the overall quality of the electrode sheet 1. The lasers in this embodiment can be, for example, lasers in the prior art that can adjust the angle of the laser galvanometer.

[0066] More specifically, the number of lasers is four spaced at intervals along the conveying direction of the feeding unit 2. The four lasers divide the cutting path of the electrode sheet 1 into four parts. Each laser is responsible for one part of the cutting path in turn. After combining the cutting paths of each laser, it is the cutting path of the electrode sheet 1. In this way, it is convenient to increase the conveying speed of the feeding unit 2. Of course, the number of lasers can also be one, two, three, five, six, etc. It only needs to adjust the number of structures cooperating with it and the conveying speed of the feeding unit 2 according to the number of lasers.

[0067] The dust removal unit 3 of the laser cutting mechanism in this embodiment can adsorb the dust generated by the laser dynamic cutting unit. The dust removal unit 3 includes a first dust removal component 301. The first dust removal component 301 is arranged outside the feeding unit 2 to be able to adsorb the dust generated by the laser dynamic cutting unit. Through the setting of the first dust removal component 301, it is beneficial to absorb the dust generated by the laser cutting mechanism on the surface of the electrode sheet 1. The structure is simple and is beneficial to design and implementation.

[0068] Specifically, the first dust removal component 301 in this embodiment includes a dust removal cover 3011 covering the feeding unit 2 and a dust removal pipe 3012 communicated with the dust removal cover 3011. A plurality of avoidance holes 3013 are provided on the dust removal cover 3011, and the laser of the laser cutting mechanism can pass through the avoidance holes 3013. The number of the avoidance holes 3013 matches the number of lasers, which is four in this embodiment. With the cooperation of the dust removal cover 3011 and the dust removal pipe 3012, the structure is simple. The setting of the avoidance holes 3013 facilitates the arrangement of the dust removal cover 3011 on the cutting path of the laser dynamic cutting unit and is convenient for design and implementation.

[0069] To facilitate the adsorption and transfer of the pole piece 1 by the feeding unit 2, the feeding unit 2 in this embodiment includes an inner cylinder 201, an outer cylinder 202 provided outside the inner cylinder 201 and capable of rotating relative to the inner cylinder 201, a seal provided between the inner cylinder 201 and the outer cylinder 202, and a pressure roller 203 provided outside the outer cylinder 202.

[0070] Among them, a negative pressure unit 4 is provided on the inner cylinder 201, and negative pressure adsorption holes 2021 communicated with the negative pressure unit 4 are provided on the surface of the outer cylinder 202. The feeding unit 2 can adsorb the pole piece 1 to the surface of the feeding unit 2 through the negative pressure adsorption holes 2021. The pressure roller 203 is provided at the feeding end in the conveying direction of the feeding unit 2 to facilitate the adsorption of the pole piece 1 to the surface of the feeding unit 2. The feeding unit 2 includes the inner cylinder 201, the outer cylinder 202, the seal and the pressure roller 203, with a simple structure. And through the setting of the negative pressure unit 4, it is convenient for the feeding unit 2 to adsorb the pole piece 1, enabling the outer cylinder 202 to rotate relative to the inner cylinder 201. Compared with the pair-roller conveying, it can eliminate the wrinkles of the pole piece 1, facilitate the improvement of production continuity, facilitate the transfer of the pole piece 1, and is conducive to design and implementation.

[0071] Specifically, the outer cylinder 202 in this embodiment has a driving end 2022, and the driving end 2022 is connected to an external driving device through a transmission component so as to be able to rotate relative to the inner cylinder 201 under the drive of the external driving device. To facilitate the rotation of the outer cylinder 202, a plurality of bearings are provided between the inner cylinder 201 and the outer cylinder 202. The inner rings of the bearings are all connected to the inner cylinder 201, and the outer rings of the bearings are connected to the outer cylinder 202. A groove is provided at the connection between the inner cylinder 201 and the outer cylinder 202, and the seal is a sealing ring sleeved in the groove to facilitate improving the sealing effect between the inner cylinder 201 and the outer cylinder 202 and thus conducive to improving the adsorption effect of the feeding unit 2.

[0072] In addition, in the inner cylinder 201 of the feeding unit 2 in this embodiment, there are a first cavity 2011 and a second cavity 2012 that are not connected to each other. The first cavity 2011 is connected to the negative pressure unit 4. When the outer cylinder 202 rotates to the position of the first cavity 2011, the negative pressure unit 4 adsorbs the pole piece 1 to the surface of the feeding unit 2 through the negative pressure adsorption holes 2021. The second cavity 2012 is disconnected from the negative pressure unit 4. When the outer cylinder 202 rotates to the position of the second cavity 2012, the pole piece 1 detaches from the feeding unit 2. Through the setting of the first cavity 2011, it is convenient for the negative pressure unit 4 to adsorb the pole piece 1 through the negative pressure adsorption holes 2021. Through the setting of the second cavity 2012, when the pole piece 1 moves to the position of the second cavity 2012 with the outer cylinder 202, it can detach from the outer cylinder 202, which is convenient for the pole piece 1 to be transported to the subsequent workstations and is beneficial to the design and implementation.

[0073] More specifically, the negative pressure unit 4 in this embodiment includes a negative pressure pipeline 401 provided in the inner cylinder 201. A communication hole communicating with the first cavity 2011 is provided on the negative pressure pipeline 401, so that the negative pressure unit 4 includes the negative pressure pipeline 401 provided with the communication hole, which is beneficial to the formation of negative pressure in the first cavity 2011 and has a simple structure and is beneficial to the design and implementation.

[0074] In order to better improve the use quality of the feeding unit 2, a second dust removal component 302 is provided in the first cavity 2011 of the feeding unit 2 in this embodiment. The second dust removal component 302 can adsorb the soot sucked into the first cavity 2011 by the negative pressure unit 4. Through the setting of the second dust removal component 302, it is convenient to collect the soot sucked into the first cavity 2011 and is beneficial to the design and implementation.

[0075] Specifically, the second dust removal component 302 of the laser cutting mechanism in this embodiment includes a dust collection cavity 3021 provided in the first cavity 2011 and a dust collection pipe 3022 communicating with the dust collection cavity 3021, so that the second dust removal component 302 includes the dust collection cavity 3021 and the dust collection pipe 3022 provided in the first cavity 2011, with a simple structure, convenient for design and implementation, and the setting of the dust collection cavity 3021 is beneficial to better collect the soot entering the first cavity 2011.

[0076] In order to facilitate the laser dynamic cutting unit to cut the pole piece 1, a plurality of sinking grooves 2023 are provided on the outer cylinder 202 along the circumferential direction of the outer cylinder 202. Each sinking groove 2023 is arranged at intervals along the preset cutting position of the pole piece 1 on the outer cylinder 202. Through the setting of the sinking grooves 2023, it is convenient for the laser dynamic cutting mechanism to cut the pole piece 1, and at the same time, the loss of the laser dynamic cutting mechanism to the feeding unit 2 can be reduced, and the structure is simple and convenient for design and implementation.

[0077] The laser cutting mechanism of this embodiment can adsorb and convey the pole piece 1 through the feeding unit 2, is conducive to improving the cutting quality of the pole piece 1 through the laser dynamic cutting mechanism, and can adsorb the smoke and dust generated during cutting through the dust removal unit 3, thereby being conducive to improving the overall quality of the pole piece 1 after being cut by the laser cutting mechanism.

[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser cutting mechanism for cutting pole pieces, characterized in that The cutting mechanism includes: a laser dynamic cutting unit that can cut the electrode sheet at a preset position as the electrode sheet moves; a feeding unit that can restrain the electrode sheet on the feeding unit and move as the feeding unit rotates; a dust removal unit disposed on the feeding unit to collect the dust generated when the laser dynamic cutting unit cuts the electrode sheet.

2. The laser cutting mechanism according to claim 1, wherein: the laser dynamic cutting unit includes a plurality of lasers arranged at intervals above the feeding unit along the conveying direction of the feeding unit; the cutting paths of the plurality of lasers are combined to cut off the electrode sheet.

3. The laser cutting mechanism according to claim 1, wherein: the dust removal unit includes a first dust removal assembly disposed outside the feeding unit to adsorb the dust generated by the laser dynamic cutting unit.

4. The laser cutting mechanism according to claim 3, wherein: the first dust removal assembly includes a dust removal cover covering the upper part of the feeding unit and a dust removal pipe communicated with the dust removal cover; a plurality of avoidance holes are provided on the dust removal cover, and the laser of the laser dynamic cutting unit can pass through the avoidance holes.

5. The laser cutting mechanism according to any one of claims 1-4, wherein: the feeding unit includes an inner cylinder, an outer cylinder disposed outside the inner cylinder and capable of rotating relative to the inner cylinder, a seal disposed between the inner cylinder and the outer cylinder, and a pressure roller disposed outside the outer cylinder; a negative pressure unit is provided on the inner cylinder, and negative pressure adsorption holes communicated with the negative pressure unit are provided on the surface of the outer cylinder; the feeding unit can adsorb the electrode sheet to the surface of the feeding unit through the negative pressure adsorption holes.

6. The laser cutting mechanism according to claim 5, wherein: a first cavity and a second cavity that are not communicated with each other are provided in the inner cylinder; the first cavity is communicated with the negative pressure unit. When the outer cylinder rotates to the position of the first cavity, the negative pressure unit adsorbs the electrode sheet to the surface of the feeding unit through the negative pressure adsorption holes; the second cavity is disconnected from the negative pressure unit. When the outer cylinder rotates to the position of the second cavity, the electrode sheet detaches from the feeding unit.

7. The laser cutting mechanism according to claim 6, wherein: the negative pressure unit includes a negative pressure pipe disposed in the inner cylinder, and a communication hole communicated with the first cavity is provided on the negative pressure pipe.

8. The laser cutting mechanism according to claim 6, wherein: a second dust removal assembly is provided in the first cavity, and the second dust removal assembly can adsorb the dust sucked into the first cavity by the negative pressure unit.

9. The laser cutting mechanism according to claim 8, wherein: the second dust removal assembly includes a dust collection cavity disposed in the first cavity and a dust collection pipe communicated with the dust collection cavity.

10. The laser cutting mechanism according to claim 5, wherein: A plurality of sinking grooves are provided on the outer cylinder along the circumferential direction of the outer cylinder, and each of the sinking grooves is arranged at intervals along the preset position of the pole piece cutting on the outer cylinder.

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