Laser cutting device

Abstract

The application relates to the technical field of current collector die cutting, and provides a laser cutting device, which comprises a first laser cutter and a second laser cutter. The first laser cutter and the second laser cutter are arranged at intervals along the moving direction of a parent roll, and the first laser cutter and the second laser cutter are staggered or coaxial in the moving direction of the parent roll, so as to cut two different edges of a blank area in the middle of the parent roll. Through the technical scheme, waste generated after cutting the blank area in the middle of the parent roll can be reduced, so that the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of current collector die-cutting structure technology, and more specifically, to a laser cutting device. Background Technology

[0002] The current collector is typically cut out from a region on the master roll using a laser cutter. Generally, a 60mm wide blank area is left in the middle of the master roll. Two horizontally positioned laser cutters then cut along both sides of this blank area to form the current collector's tab lead-out area (e.g., ...). Figure 1 (as shown); however, in the prior art, when two horizontally positioned laser cutters cut the blank area in the middle of the master roll, a lot of waste is generated after the current collector's tab lead-out area is cut out, thus causing waste. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a laser cutting device that can reduce the waste generated after cutting the blank area in the middle of the master roll, thereby reducing production costs.

[0004] To solve the above-mentioned technical problems, this application adopts the following technical solution: This application provides a laser cutting apparatus, including: a first laser cutter and a second laser cutter, wherein the first laser cutter and the second laser cutter are arranged at intervals along the moving direction of the master roll, and the first laser cutter and the second laser cutter are offset from each other or coaxial in the moving direction of the master roll, so as to cut two different sides of the blank area in the middle of the master roll respectively.

[0005] In the implementation of the above scheme, the laser cutting device includes a first laser cutter and a second laser cutter. The first laser cutter and the second laser cutter are arranged at intervals along the moving direction of the mother roll, and the first laser cutter and the second laser cutter are offset from each other or coaxial in the moving direction of the mother roll. That is, the first laser cutter and the second cutter are not coaxial or are coaxial in the moving direction of the mother roll. In this way, the first laser cutter and the second laser cutter can cut different sides of the middle blank area of ​​the mother roll according to the middle blank area of ​​different widths. Thus, in the middle blank area, the electrode lead-out areas of two adjacent current collectors on the same side cut out become the electrode leads of the current collectors on the other side. The tab lead-out area makes full use of the waste area of ​​two adjacent tab lead-out areas on the same side. Since the first laser cutter and the second laser cutter are arranged at intervals along the moving direction of the master roll, the blank area in the middle of the master roll does not need to be a wide area to accommodate the cutting by two laser cutters arranged at intervals perpendicular to the moving direction of the master roll. This reduces the width of the blank area in the middle, thereby reducing waste generation. At the same time, the arrangement along the moving direction of the master roll also allows the tab lead-out area of ​​the current collector cut by one of the laser cutters to be the waste area of ​​two adjacent current collector tab lead-out areas on the same side, further making full use of the waste area of ​​the blank area, thereby reducing production costs.

[0006] In one embodiment, the laser cutting device further includes a support and a first moving mechanism. The first moving mechanism is connected to the support and the first laser cutter respectively. The first moving mechanism is used to adjust the first laser cutter to move along a direction perpendicular to the master roll.

[0007] In the implementation of the above scheme, the laser cutting device also includes a support and a first moving mechanism. The support provides support for the first moving mechanism. The first moving mechanism is connected to the support and the first laser cutter respectively. The first moving mechanism is used to adjust the first laser cutter to move along the moving direction perpendicular to the master roll, so that the first laser cutter can be aligned with one side of the middle blank area, so that the laser cutting device can cut the middle blank area of ​​different widths.

[0008] In one embodiment, the first laser cutter has one end of a wire bundle facing the second laser cutter; the laser cutting device further includes a second moving mechanism connected to the first laser cutter for controlling the first laser cutter to move along the moving direction of the master roll.

[0009] In the implementation of the above scheme, the first laser cutter has one end of its wire bundle facing the second laser cutter; the laser cutting device also includes a second moving mechanism, which is connected to the first laser cutter and is used to control the first laser cutter to move along the moving direction of the master roll, thereby adjusting the distance between the first laser cutter and the second laser cutter to avoid the first laser cutter and the second laser cutter being too close, which could easily cause the wire bundle of the first laser cutter to bend; in addition, adjusting the distance between the first laser cutter and the second laser cutter is also adjusting the distance between two adjacent tab lead-out areas after cutting, to avoid the second laser cutter repeatedly cutting the tab lead-out area cut by the first laser cutter.

[0010] In one embodiment, the first moving mechanism includes a first slide rail and a first slider. The first slide rail is connected to the bracket and extends along a moving direction perpendicular to the master roll. The first slider can move along the first slide rail.

[0011] In the implementation of the above solution, the first moving mechanism includes a first slide rail and a first slider. The first slide rail is connected to the bracket to improve stability. The first slide rail extends along the moving direction perpendicular to the master roll. The first slider can move along the first slide rail. When the first slider slides, it also moves relative to the moving direction perpendicular to the master roll, thereby realizing the adjustment of the position of the first laser cutter, so that the first laser cutter can be aligned with one side of the middle blank area, which can meet the requirements of cutting different widths of the middle blank area.

[0012] In one embodiment, the second moving mechanism includes a second slide rail and a second slider. The second slide rail is connected to the first slider, and the second slider can move along the second slide rail. The second slide rail extends along the moving direction of the master roll.

[0013] In the implementation of the above scheme, the second moving mechanism includes a second slide rail and a second slider. The second slide rail is connected to the first slider, so that when the first slider slides, it can drive the second slide rail and the second slider to move synchronously, thereby driving the first laser cutter to move. The second slider can move along the second slide rail, which extends along the moving direction of the mother roll. This limits the second slider to extend along the moving direction of the mother roll when it moves through the second slide rail, thereby enabling the adjustment of the distance between the first laser cutter and the second laser cutter.

[0014] In one embodiment, the laser cutting device further includes a third moving mechanism connected to the second laser cutter for controlling the second laser cutter to move along a direction perpendicular to the master roll.

[0015] In the implementation of the above scheme, the laser cutting device also includes a third moving mechanism, which is connected to the second laser cutter and is used to control the second laser cutter to move along a direction perpendicular to the mother roll, so that the first laser cutter is coaxial or offset in the moving direction of the mother roll. In this way, the second laser cutter can be aligned with the other side of the middle blank area to cut. At the same time, when encountering middle blank areas of different widths, the second laser cutter can also be aligned with the corresponding side to cut the tab lead-out area.

[0016] In one embodiment, the laser cutting device further includes two third laser cutters, which are arranged at intervals along a direction perpendicular to the movement direction of the master roll, and are respectively used to cut the blank areas on the two outer edges of the master roll.

[0017] In the implementation of the above scheme, the laser cutting device also includes two third laser cutters. The two third laser cutters are arranged at intervals along the direction perpendicular to the movement of the mother roll. The two third laser cutters are used to cut the blank areas on the two outer edges of the mother roll, thereby improving the cutting efficiency of the laser cutting device. The two third laser cutters cooperate with the first laser cutter and the second laser cutter to cut out four tab lead-out areas at the same time in one cut.

[0018] In one embodiment, the laser cutting device further includes two fourth moving mechanisms, which are respectively connected to the two third laser cutters. The fourth moving mechanisms are used to control the third laser cutters to move along a direction perpendicular to the movement direction of the master roll.

[0019] In the implementation of the above scheme, the laser cutting device also includes two fourth moving mechanisms, which are respectively connected to two third laser cutters. The fourth moving mechanisms are used to control the third laser cutters to move along a direction perpendicular to the mother roll, so that the third laser cutter can be aligned with one of the outermost edges of the mother roll, thereby cutting the tab lead-out areas of mother rolls of different widths.

[0020] In one embodiment, the laser cutting device further includes a connector connected to the bracket and extending in a direction perpendicular to the movement direction of the master roll, and the connector is connected to the fourth moving mechanism.

[0021] In the implementation of the above scheme, the laser cutting device also includes a connector, which is connected to the bracket and extends in a direction perpendicular to the movement direction of the master roll. The connector is also connected to the fourth moving mechanism, thereby providing stable support for the fourth moving mechanism.

[0022] In one embodiment, the laser cutting device further includes a fifth moving mechanism, which is connected to the connecting member and can move perpendicular to the mother roll direction to adjust the distance between the first laser cutter, the second laser cutter, the third laser cutter and the mother roll.

[0023] In the implementation of the above scheme, the laser cutting device also includes a fifth moving mechanism. The fifth moving mechanism is connected to the connector and can move perpendicular to the direction of the mother roll, thereby driving the connector to move. The first laser cutter, the second laser cutter, and the third laser cutter are all connected to the connector. The movement of the connector can drive the first laser cutter, the second laser cutter, and the third laser cutter to move, thereby adjusting the distance between the laser cutter and the mother roll, making the laser focus more accurate, which helps to cut the tab lead-out area.

[0024] In one embodiment, the laser cutting device further includes a first dust collector, which is located on both sides of the master roll, and the first dust collector is aligned with the blank area in the middle of the master roll.

[0025] In the implementation of the above scheme, the laser cutting device also includes a first dust collector. The first dust collector and the first laser cutter are located on both sides of the mother roll. The first dust collector is aimed at the blank area in the middle of the mother roll. Since the first laser cutter and the second laser cutter will generate dust when cutting the blank area, by setting up the first dust collector, the dust can be sucked away, thereby improving the surrounding environmental hygiene.

[0026] In one embodiment, the laser cutting device further includes two second dust collectors, which are located on both sides of the master roll, respectively, and the second dust collectors are aligned with the blank area outside the master roll.

[0027] In the implementation of the above scheme, the laser cutting device also includes two second dust collectors. The second dust collectors and the third laser cutter are located on both sides of the mother roll. The second dust collectors are aimed at the blank area outside the mother roll. Since the third laser cutter will generate dust when cutting the blank area, the second dust collectors can remove the dust and improve the surrounding environmental hygiene. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram illustrating the cutting of the master roll using existing technology; Figure 2 This is a schematic diagram of the structure of the laser cutting device provided in the embodiments of this application; Figure 3 These are schematic diagrams of the laser cutting device provided in the embodiments of this application from different perspectives; Figure 4 This is a schematic diagram of the laser cutting device provided in an embodiment of this application from another perspective; Figure 5 This is a schematic diagram illustrating the effect of the laser cutting device provided in this application cutting the blank area in the middle of the master roll.

[0030] Icons: 1-First laser cutter; 2-Second laser cutter; 3-First moving mechanism; 31-First slide rail; 32-First slider; 4-Second moving mechanism; 41-Second slide rail; 42-Second slider; 5-Third moving mechanism; 6-Third laser cutter; 7-Fourth moving mechanism; 8-Connector; 9-Fifth moving mechanism; 10-Bracket; 11-First dust collector; 12-Second dust collector; 13-Mother roll; 14-Electrode lead-out area. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figure 2 and 5As shown, this application embodiment provides a laser cutting device, including a first laser cutter 1 and a second laser cutter 2. The first laser cutter 1 and the second laser cutter 2 are arranged at intervals along the moving direction of the master roll 13, and the first laser cutter 1 and the second laser cutter 2 are offset from each other or coaxial in the moving direction of the master roll 13. That is, the first laser cutter 1 and the second cutter are not coaxial or are coaxial in the moving direction of the master roll 13. In this way, the first laser cutter 1 and the second laser cutter 2 can cut different sides of the middle blank area of ​​the master roll 13 according to the middle blank area of ​​different widths. Thus, in the middle blank area, the electrode lead-out areas 14 of two adjacent current collectors on the same side cut out become the current collectors on the other side. The tab lead-out area 14 makes full use of the waste area of ​​two adjacent tab lead-out areas 14 on the same side. Since the first laser cutter 1 and the second laser cutter 2 are arranged at intervals along the moving direction of the master roll 13, the blank area in the middle of the master roll 13 does not need to be left with a wide area to meet the cutting of two laser cutters arranged at intervals perpendicular to the moving direction of the master roll 13. This reduces the width of the blank area in the middle, thereby reducing the generation of waste. At the same time, the arrangement along the moving direction of the master roll 13 also allows the tab lead-out area 14 of the current collector cut by one of the laser cutters to be the waste area of ​​two adjacent tab lead-out areas 14 of the current collector on the same side. This further makes full use of the waste area of ​​the blank area, thereby reducing production costs.

[0034] Optionally, the direction of movement of the master roll 13 is as follows: Figure 2 As shown.

[0035] Optionally, the master roll 13 is generally moved by a conveying device, which will not be described in detail in this embodiment.

[0036] Optionally, the laser cutting device can be placed vertically, and in some cases, horizontally.

[0037] The fact that the first laser cutter 1 and the second laser cutter 2 are offset from each other in the direction of movement of the master roll 13 means that the first laser cutter 1 and the second laser cutter 2 are respectively on different straight lines parallel to the direction of movement of the master roll 13. The fact that they are coaxial means that the first laser cutter 1 and the second laser cutter 2 are on the same straight line parallel to the direction of movement of the master roll 13.

[0038] Optionally, in existing technologies, the blank area in the middle needs to be 60mm wide (e.g., Figure 1 As shown), in this embodiment of the application, the blank area in the middle can be 30mm (e.g. Figure 2 (As shown), of course, in some cases it can be 35mm to 40mm, thereby reducing the width of the blank area in the middle and reducing the generation of waste.

[0039] In addition, in existing technologies, after the laser cutter finishes cutting, the master roll 13 needs to be cut at least three times: once in the middle blank area and once in each of the two material areas, thus forming four pole rolls (such as...). Figure 1 As shown); however, in this embodiment, because the width of the middle blank area is reduced, the middle blank area does not need to be cut by a divider (e.g. Figure 2 As shown in the figure, this reduces one cutting step and improves efficiency in the processing of the current collector.

[0040] Optionally, the laser cutter can generate a high-energy-density laser beam, which is focused onto the blank area of ​​the master roll 13 through an optical system (such as lenses and mirrors). The movement path of the laser beam is controlled by a computer numerical control system to ensure that the laser beam moves precisely along the preset cutting path and completes the cutting of the blank area.

[0041] like Figure 2 As shown, in one embodiment, the laser cutting device also includes a support 10 and a first moving mechanism 3. The support 10 provides support for the first moving mechanism 3. The first moving mechanism 3 is connected to the support 10 and the first laser cutter 1 respectively. The first moving mechanism 3 is used to adjust the first laser cutter 1 to move along a moving direction perpendicular to the master roll 13, so that the first laser cutter 1 can be aligned with one side of the middle blank area, and the laser cutting device can cut middle blank areas of different widths.

[0042] Optionally, the first moving mechanism 3 can be a sliding screw, and in some cases, it can also be a ball screw.

[0043] Optionally, the bracket 10 is disposed on one side of the mother roll 13.

[0044] Optionally, the first laser cutter 1 moves in a direction perpendicular to the mother roll 13, which means: if the mother roll 13 moves in the Z direction, then the first laser cutter 1 moves in the X direction.

[0045] like Figure 3As shown, in one embodiment, the first laser cutter 1 has one end of its wire bundle facing the second laser cutter 2; the laser cutting device also includes a second moving mechanism 4, which is connected to the first laser cutter 1 and is used to control the first laser cutter 1 to move along the moving direction of the master roll 13, thereby adjusting the distance between the first laser cutter 1 and the second laser cutter 2, avoiding the first laser cutter 1 and the second laser cutter 2 from being too close, which could easily cause the wire bundle of the first laser cutter 1 to bend; in addition, adjusting the distance between the first laser cutter 1 and the second laser cutter 2 is also adjusting the distance between two adjacent tab lead-out areas 14 after cutting, avoiding the second laser cutter 2 from repeatedly cutting the tab lead-out area 14 cut by the first laser cutter 1.

[0046] Optionally, the second moving mechanism 4 can be a sliding screw, and in some cases, it can also be a ball screw.

[0047] Optionally, the first laser cutter 1 is connected to the second slider 42 in the second moving mechanism 4.

[0048] like Figure 3 As shown, in one embodiment, the first moving mechanism 3 includes a first slide rail 31 and a first slider 32. The first slide rail 31 is connected to the bracket 10 to improve stability. The first slide rail 31 extends along the moving direction perpendicular to the master roll 13. The first slider 32 can move along the first slide rail 31. When the first slider 32 slides, it also moves relative to the moving direction perpendicular to the master roll 13, thereby realizing the adjustment of the position of the first laser cutter 1, so that the first laser cutter 1 can be aligned with one side of the middle blank area, which can meet the cutting of different widths of the middle blank area.

[0049] Optionally, the first slide rail 31 can be fixed to the bracket 10 by fasteners.

[0050] like Figure 3 As shown, in one embodiment, the second moving mechanism 4 includes a second slide rail 41 and a second slider 42. The second slide rail 41 is connected to the first slider 32, so that when the first slider 32 slides, it can drive the second slide rail 41 and the second slider 42 to move synchronously, thereby driving the first laser cutter 1 to move. The second slider 42 can move along the second slide rail 41. The second slide rail 41 extends along the moving direction of the mother roll 13, which limits the second slider 42 to extend along the moving direction of the mother roll 13 when it moves through the second slide rail 41, thereby enabling the adjustment of the distance between the first laser cutter 1 and the second laser cutter 2.

[0051] Optionally, the second slide rail 41 is connected to the first slider 32 by fasteners.

[0052] like Figure 3As shown, in one embodiment, the laser cutting device further includes a third moving mechanism 5, which is connected to the second laser cutter 2 and is used to control the second laser cutter 2 to move along a direction perpendicular to the mother roll 13, so that the first laser cutter 1 is coaxial or offset in the moving direction of the mother roll 13. In this way, the second laser cutter 2 can be aligned with the other side of the middle blank area to cut. At the same time, when encountering middle blank areas of different widths, the second laser cutter 2 can also be aligned with the corresponding side to cut the tab lead-out area 14.

[0053] Optionally, the third moving mechanism 5 can be a ball screw, and in some cases, it can also be a sliding screw.

[0054] Optionally, a connector is provided between the second laser cutter 2 and the third moving mechanism 5. That is, the nut in the third moving mechanism 5 is connected to the second laser cutter 2 through the connector. The nut in the third moving mechanism 5 can move relative to the screw in the third moving mechanism 5, thereby driving the second laser cutter 2 to move.

[0055] Optionally, the screw of the third moving mechanism 5 is set perpendicular to the moving direction of the mother roll 13; of course, in some cases, an additional moving mechanism that can move along the moving direction of the mother roll 13 can be set for the second laser cutter 2 to drive the second laser cutter 2 to move along the moving direction of the mother roll 13.

[0056] like Figure 2 As shown, in one embodiment, the laser cutting device also includes two third laser cutters 6. The two third laser cutters 6 are arranged at intervals along the moving direction perpendicular to the master roll 13. The two third laser cutters 6 are used to cut the blank areas on the two outer edges of the master roll 13, thereby improving the cutting efficiency of the laser cutting device. The two third laser cutters 6 cooperate with the first laser cutter 1 and the second laser cutter 2 to cut out four tab lead-out areas 14 at the same time in one cut.

[0057] like Figure 2 As shown, in one embodiment, the laser cutting device also includes two fourth moving mechanisms 7, which are respectively connected to two third laser cutters 6. The fourth moving mechanisms 7 are used to control the third laser cutter 6 to move along a direction perpendicular to the moving direction of the mother roll 13, so that the third laser cutter 6 can be aligned with one of the outermost edges of the mother roll 13, thereby cutting the tab lead-out area 14 of the mother roll 13 with different widths.

[0058] Optionally, the fourth moving mechanism 7 may have the same structure as the third moving mechanism 5.

[0059] like Figure 2As shown, in one embodiment, the laser cutting device also includes a connector 8, which is connected to the bracket 10 and extends in a direction perpendicular to the moving direction of the master roll 13. The connector 8 is connected to the fourth moving mechanism 7, thereby providing stable support for the fourth moving mechanism 7.

[0060] Optionally, the third moving mechanism 5 is also connected to the connector 8.

[0061] Optionally, the connector 8 and the bracket 10 can be integrally formed or detachably connected.

[0062] like Figure 2 As shown, in one embodiment, the laser cutting device also includes a fifth moving mechanism 9, which is connected to the connecting member 8. The fifth moving mechanism 9 can move perpendicular to the direction of the mother roll 13, thereby driving the connecting member 8 to move. The first laser cutter 1, the second laser cutter 2, and the third laser cutter 6 are all connected to the connecting member 8. The movement of the connecting member 8 can drive the first laser cutter 1, the second laser cutter 2, and the third laser cutter 6 to move, thereby adjusting the distance between the laser cutter and the mother roll 13, making the laser focus more precise, which helps to cut the tab lead-out area 14.

[0063] Optionally, the fifth moving mechanism 9 can be a ball screw, and in some cases, it can also be a sliding screw.

[0064] Optionally, since the connector 8 is connected to the bracket 10, and the second laser cutter 2 and the third laser cutter 6 are connected to the connector 8, and the first laser cutter 1 is connected to the bracket 10, when the connector 8 moves, it also drives the first laser cutter 1, the second laser cutter 2 and the third laser cutter 6 to move simultaneously.

[0065] Optionally, the screw in the fifth moving mechanism 9 is arranged perpendicularly to the direction of the mother roll 13, that is, the screw in the fifth moving mechanism 9 is arranged along the Y direction.

[0066] Optionally, the screw in the fifth moving mechanism 9 is fixedly supported by a support part, which can be fixed on a support frame or in other positions, thereby improving the overall stability of the laser cutting device.

[0067] like Figure 4 As shown, in one embodiment, the laser cutting device also includes a first dust collector 11. The first dust collector 11 and the first laser cutter 1 are located on both sides of the master roll 13. The first dust collector 11 is aligned with the blank area in the middle of the master roll 13. Since the first laser cutter 1 and the second laser cutter 2 will generate dust when cutting the blank area, the first dust collector 11 can remove the dust and improve the surrounding environmental hygiene.

[0068] Optionally, the first dust collector 11 includes a dust collector hood, a dust collector duct, and a fan. The dust collector hood is oriented towards the mother roll, and the fan provides negative pressure so that the dust collector hood can remove dust.

[0069] like Figure 4 As shown, in one embodiment, the laser cutting device also includes two second dust collectors 12. The second dust collectors 12 and the third laser cutter 6 are located on both sides of the mother roll 13. The second dust collectors 12 are aligned with the blank area outside the mother roll 13. Since the third laser cutter 6 will generate dust when cutting the blank area, the second dust collectors 12 can remove the dust and improve the surrounding environmental hygiene.

[0070] Optionally, the second dust collector 12 includes a dust collector hood, a dust collector duct, and a fan. The dust collector hood is positioned towards the mother roll 13, and the fan provides negative pressure so that the dust collector hood can remove dust.

[0071] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A laser cutting device, characterized in that, include: A first laser cutter and a second laser cutter are arranged at intervals along the moving direction of the master roll, and the first laser cutter and the second laser cutter are staggered or coaxial with each other in the moving direction of the master roll, so as to cut two different sides of the blank area in the middle of the master roll respectively.

2. The laser cutting apparatus according to claim 1, characterized in that, The laser cutting device further includes a support and a first moving mechanism. The first moving mechanism is connected to the support and the first laser cutter respectively. The first moving mechanism is used to adjust the first laser cutter to move along a direction perpendicular to the master roll.

3. The laser cutting apparatus according to claim 2, characterized in that, The first laser cutter has one end of a wire bundle positioned toward the second laser cutter; The laser cutting device further includes a second moving mechanism, which is connected to the first laser cutter and is used to control the first laser cutter to move along the moving direction of the master roll.

4. The laser cutting apparatus according to claim 3, characterized in that, The first moving mechanism includes a first slide rail and a first slider. The first slide rail is connected to the bracket and extends along a moving direction perpendicular to the master roll. The first slider can move along the first slide rail.

5. The laser cutting apparatus according to claim 4, characterized in that, The second moving mechanism includes a second slide rail and a second slider. The second slide rail is connected to the first slider, and the second slider can move along the second slide rail. The second slide rail extends along the moving direction of the master roll.

6. The laser cutting apparatus according to any one of claims 1 to 5, characterized in that, The laser cutting device further includes a third moving mechanism, which is connected to the second laser cutter and is used to control the second laser cutter to move along a direction perpendicular to the master roll.

7. The laser cutting apparatus according to any one of claims 2 to 5, characterized in that, The laser cutting device also includes two third laser cutters, which are arranged at intervals along a direction perpendicular to the movement direction of the master roll. The two third laser cutters are used to cut the blank areas on the two outer edges of the master roll.

8. The laser cutting apparatus according to claim 7, characterized in that, The laser cutting device further includes two fourth moving mechanisms, which are respectively connected to the two third laser cutters. The fourth moving mechanisms are used to control the third laser cutters to move along a direction perpendicular to the movement direction of the master roll.

9. The laser cutting apparatus according to claim 8, characterized in that, The laser cutting device further includes a connector, which is connected to the bracket and extends in a direction perpendicular to the movement direction of the master roll. The connector is also connected to the fourth moving mechanism.

10. The laser cutting apparatus according to claim 9, characterized in that, The laser cutting device further includes a fifth moving mechanism, which is connected to the connecting member and can move perpendicular to the mother roll direction to adjust the distance between the first laser cutter, the second laser cutter, the third laser cutter and the mother roll.

11. The laser cutting apparatus according to any one of claims 1 to 5, characterized in that, The laser cutting device also includes a first dust collector, which is located on both sides of the master roll, and the first dust collector is aligned with the blank area in the middle of the master roll.

12. The laser cutting apparatus according to claim 7, characterized in that, The laser cutting device also includes two second dust collectors, which are located on both sides of the master roll, respectively, with the second dust collectors aligned with the blank area outside the master roll.

Images