Pole piece laser cutting and transporting integrated device

Abstract

The utility model relates to a laser cutting and conveying integrated device for pole pieces. The laser cutting and conveying integrated device comprises a first supporting piece, a conveying assembly, an upper adsorption set, a lower adsorption set and a laser cutting set. The first supporting piece is located on one side of the input end of the conveying assembly and used for containing a material belt. The conveying assembly is used for adsorbing and moving the material belt, a cutting station is arranged at the position adjacent to the first supporting piece, and the laser cutting set is located above the cutting station and used for cutting the material belt into pole pieces. The upper adsorption set and the lower adsorption set are arranged on the two sides of the cutting station correspondingly and used for adsorbing the upper portion and the lower portion of the material belt. The cutting station and the conveying station of the device are located on the same component, and the device is suitable for cutting narrow pole pieces. The conveying assembly continuously adsorbs the cut and formed pole pieces, wrinkling and shaking of the pole pieces in the conveying process are avoided, the laser cutting quality is improved, and material blocking is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery manufacturing, in particular to a polar sheet laser cutting and conveying integrated device. BACKGROUND

[0002] The laminated battery has higher volume energy density, more stable internal structure, long cycle life and high safety, and is widely used. In the preparation process of the laminated battery, the roll material is cut to form a single polar sheet, and then the polar sheets are stacked.

[0003] The current mainstream polar sheet cutting method includes cutter cutting and laser cutting. The cutter for the cutter cutting is a consumable, and after a certain number of polar sheets are produced, the cutter must be replaced due to wear of the cutter edge, otherwise burrs may be generated at the polar sheet cutting position, resulting in short circuit of the battery cell. Moreover, the shape of the cutter is fixed, and the cutter cannot be compatible with polar sheets of different sizes and shapes. In comparison, laser cutting has the advantages of being able to set the cutting path at will, being compatible, having no consumables, being easy to debug and maintain, and gradually replacing the cutter cutting.

[0004] REFERENCE Figure 1 The existing laser cutting equipment adopts a scheme in which a cutting station 300 and a polar sheet conveying station 400 are separated. The cutting station 300 adopts a cutting base plate, and a plurality of suction holes connected to a negative pressure cavity are formed in the cutting base plate. When the material belt moves to the cutting base plate, the cutting base plate sucks the material belt through the suction holes, and then laser cutting and tab cutting are performed. After the laser cutting is completed, the polar sheet is continuously conveyed to the conveying station. This scheme has the following disadvantages: 1. The cutting station 300 and the conveying station are separated, and the connection distance is long, so that the polar sheet cannot be effectively conveyed when the width of the polar sheet is narrow. 2. The cutting station 300 and the conveying station are separated, and the connection distance is long, so that the polar sheet is prone to being wrinkled and raised when the polar sheet is conveyed, which may cause the polar sheet at the cutting position to vibrate in the opposite direction, thereby causing defocusing during laser cutting, affecting the quality of the polar sheet laser cutting, and even causing material blockage and other adverse effects. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a polar sheet laser cutting and conveying integrated device.

[0006] The utility model solves the technical scheme that adopts the technical scheme: a polar sheet laser cutting and conveying integrated device, which comprises: a first support, a conveying assembly, an upper suction assembly, a lower suction assembly and a laser cutting assembly.

[0007] The first support is arranged adjacent to the conveying assembly and on the input end side of the conveying assembly in the conveying direction of the conveying assembly, the conveying assembly is used for sucking the middle part of the material belt and driving the material belt to move, and the first support is used for supporting the material belt.

[0008] The upper adsorption group is arranged on one side of the transmission assembly, and the lower adsorption group is arranged on the other side of the transmission assembly. A cutting station is arranged on part of the transmission assembly, the upper adsorption group, and the lower adsorption group. The cutting station is arranged adjacent to the first support. A laser cutting group is arranged above the cutting station. The laser cutting group is used to cut the material belt on the cutting station into pole pieces.

[0009] The upper adsorption group is arranged on one side of the cutting station. When the material belt is cut, the upper adsorption group is used to adsorb the upper part of the material belt.

[0010] The lower adsorption group is arranged on the other side of the cutting station. When the material belt is cut, the lower adsorption group is used to adsorb the lower part of the material belt.

[0011] The pole piece laser cutting and conveying integrated device described above is provided with a waste adsorption mechanism adjacent to the cutting station. The waste adsorption mechanism is used to adsorb the dust generated when the laser cutting group cuts the material belt.

[0012] The pole piece laser cutting and conveying integrated device described above is provided with an upper waste edge collection group and a lower waste edge collection group. The upper waste edge collection group is arranged on the side of the upper adsorption group away from the lower adsorption group. The lower waste edge collection group is arranged on the side of the lower adsorption group away from the upper adsorption group.

[0013] The pole piece laser cutting and conveying integrated device described above is provided with a right side adsorption member on the first support. The cutting station is arranged adjacent to the right side adsorption member.

[0014] The pole piece laser cutting and conveying integrated device described above is provided with a waste adsorption mechanism including a side edge adsorption member.

[0015] The side edge adsorption member is arranged above the right side adsorption member.

[0016] The pole piece laser cutting and conveying integrated device described above is provided with a driven transmission group on the side of the first support away from the transmission assembly. The driven transmission group is used to transmit the material belt to the first support.

[0017] The pole piece laser cutting and conveying integrated device described above is provided with a driven transmission group including a driven roller and a driven roller arranged parallel to each other. The material belt is conveyed between the driven roller and the driven roller.

[0018] The upper adsorption group includes a tab adsorption part and a scrap edge adsorption part, a recessed part is arranged on one side of the tab adsorption part facing the transmission assembly, and a protruding part arranged in the recessed part is arranged on the scrap edge adsorption part.

[0019] The laser cutting and conveying integrated device for the tab also includes a second support, the transmission assembly is rotationally arranged on the second support, the second support is internally provided with a first adsorption cavity and a second adsorption cavity, and a first suction member and a second suction member are arranged on the side of the second support.

[0020] The cutting station is arranged adjacent to the second adsorption cavity, and the second suction member is used to control the adsorption force of the second adsorption cavity.

[0021] The first adsorption cavity is arranged on the side of the second adsorption cavity away from the first support, and the first suction member is used to control the adsorption force of the first adsorption cavity.

[0022] The laser cutting and conveying integrated device for the tab, the transmission assembly includes a perforated conveying belt, an upper adsorption part and a lower adsorption part, the upper adsorption part is arranged on one side of the perforated conveying belt, the lower adsorption part is arranged on the other side of the perforated conveying belt, the perforated conveying belt is used to adsorb the middle part of the tab, the upper adsorption part is used to adsorb and fix the upper edge of the tab, and the lower adsorption part is used to adsorb and fix the lower edge of the tab.

[0023] The cutting station of the device is located on the driving conveying belt, that is, the cutting station and the tab conveying station are located on the same functional component, so that it can be used for cutting and conveying tabs with a narrow width. When cutting and conveying the tabs, the transmission assembly always adsorbs the cut and formed tabs, so that the situation of wrinkling, bulging and tab shaking during conveying of the cut tabs can be avoided, and the situation of defocusing during laser cutting of the next tab can also be avoided, thereby improving the quality of laser cutting tabs and reducing the occurrence of blockage. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further explained in connection with the drawings and embodiments.

[0025] Figure 1 It is a schematic view of the position relationship between the existing laser cutting device and the tab during cutting;

[0026] Figure 2 It is a schematic view of the position relationship between the laser cutting and conveying integrated device for the tab and the tab during cutting;

[0027] Figure 3 It is a schematic view of the process of cutting the material belt into tabs;

[0028] Figure 4 is a perspective view of the embodiment of the present application;

[0029] Figure 5 is a top view of the embodiment of the present application omitting the laser cutting group;

[0030] Figure 6 is a working view of the embodiment of the present application omitting the laser cutting group;

[0031] Figure 7 is a sectional view of the embodiment of the present application;

[0032] Figure 8 is an exploded view of the second support, the first suction member and the second suction member in the embodiment of the present application;

[0033] Figure 9 is a side view of the embodiment of the present application;

[0034] The reference signs are as follows:

[0035] 1 - first support;

[0036] 2 - transport assembly; 21 - cutting station; 22 - upper suction attachment; 23 - lower suction attachment; 24 - perforated conveyor belt;

[0037] 3 - upper suction group; 31 - tab suction part; 311 - recessed part; 321 - protruding part; 32 - scrap edge suction part;

[0038] 4 - lower suction group;

[0039] 5 - laser cutting group;

[0040] 6 - scrap suction mechanism; 61 - upper scrap edge collection group; 62 - lower scrap edge collection group; 63 - side edge suction attachment;

[0041] 7 - active transport group; 71 - active roller; 72 - passive roller;

[0042] 8 - second support; 81 - first suction cavity; 82 - second suction cavity; 831 - first driven wheel; 832 - second driven wheel; 833 - third driven wheel; 834 - partition; 835 - active wheel;

[0043] 9 - right side suction attachment; 91 - first suction member; 92 - second suction member; 93 - third suction member;

[0044] 200 - tape; 201 - tab; 202 - upper scrap edge; 203 - lower scrap edge; 204 - to-be-cut region; 205 - tab; 206 - upper edge; 207 - lower edge;

[0045] 300 - cutting station; 400 - tab transport station. Detailed Implementation

[0046] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0047] Reference Figure 4 , Figure 5 An integrated device for cutting and transporting electrode lasers includes: a first support 1, a transmission component 2, an upper adsorption group 3, a lower adsorption group 4, and a laser cutting group 5.

[0048] Along the transmission direction of the transmission component 2, the first support member 1 is disposed adjacent to the transmission component 2 and located on one side of the input end of the transmission component 2. The transmission component 2 is used to adsorb the middle part of the material belt 200 and drive the material belt 200 to move. The first support member 1 is used to support the material belt 200.

[0049] The upper adsorption group 3 is located on one side of the transmission component 2, and the lower adsorption group 4 is located on the other side of the transmission component 2. A cutting station 21 is provided on part of the transmission component 2, the upper adsorption group 3, and the lower adsorption group 4. The cutting station 21 is arranged adjacent to the first support member 1. The laser cutting group 5 is located above the cutting station 21. The laser cutting group 5 is used to cut the material strip 200 on the cutting station 21 into electrode sheets 201.

[0050] When the material strip 200 is cut, the upper adsorption group 3 is used to adsorb the upper part of the material strip 200;

[0051] When the material strip 200 is cut, the lower adsorption group 4 is used to adsorb the lower part of the material strip 200.

[0052] The working principle of this device is as follows:

[0053] Reference Figures 2-6, the material belt 200 is transmitted to the A direction, the free end of the material belt sequentially passes through the first support 1 and the transmission assembly 2, the transmission assembly 2 stops conveying, the material belt 200 is located on the cutting station 21, at this time, the free end of the material belt stays on the cutting station 21, and the upper adsorption group 3 adsorbs the upper part of the material belt 200, the lower adsorption group 4 adsorbs the lower part of the material belt 200, and the transmission assembly 2 adsorbs the material belt 200;

[0054] With reference to Figures 3-4 , the laser cutting group 5 operates to cut the material belt 200 between the transmission assembly 2 and the first support 1, and cut the upper part and the lower part of the material belt 200, so as to cut the material belt 200 into the pole piece 201;

[0055] The transmission assembly 2 starts to drive the pole piece 201 to be conveyed to the downward direction (the A direction), the pole piece 201 leaves the cutting station 21, and the new free end of the material belt 200 enters the cutting station 21, and the laser cutting group 5 starts a new round of cutting operation.

[0056] It can be seen that the cutting station 21 and the pole piece conveying station in the device are located on the transmission assembly 2, so there is no connection distance between the cutting station 21 and the pole piece conveying station, the device can be used to cut and convey the pole piece with a narrow width, and the transmission assembly always adsorbs the middle part of the material belt / pole piece during cutting and conveying the pole piece, so that the situation that the cut pole piece is wrinkled, raised, and shaken during conveying can be avoided, and the situation that the laser cutting is out of focus during cutting the next pole piece can also be avoided, thereby improving the quality of the laser-cut pole piece and reducing the occurrence of the blocking situation.

[0057] A large amount of dust will be generated during the cutting of the material belt 200 by the laser cutting group 5, the dust will block the light emitted by the laser cutting group 5, affecting the cutting quality, and the dust will also adhere to the surface of the pole piece 201, which may increase the self-discharge rate of the subsequent battery, in order to solve this problem, with reference to Figure 4 In one embodiment, a waste adsorption mechanism 6 is arranged adjacent to the cutting station 21, and the waste adsorption mechanism 6 is used to adsorb the dust generated during the cutting of the material belt 200 by the laser cutting group 5, to reduce the interference of the dust on the cutting process, thereby improving the cutting quality and ensuring that the size and shape of the pole piece 201 meet the requirements.

[0058] With reference to Figures 4-6 Further, the waste adsorption mechanism 6 includes an upper waste edge collection group 61 and a lower waste edge collection group 62, the upper waste edge collection group 61 is arranged on the side of the upper adsorption group 3 away from the lower adsorption group 4, and the lower waste edge collection group 62 is arranged on the side of the lower adsorption group 4 away from the upper adsorption group 3.

[0059] With reference to Figures 4-6After the cutting of the laser cutting group 5 is completed, the upper part of the pole piece 201 is cut into the shape of the pole lug 205, and the lower part is cut into a flat edge. At this time, the upper scrap edge 202 of the pole piece 201 is left on the upper suction group 3, and the lower scrap edge 203 of the pole piece 201 is left on the lower part of the pole piece 201. The upper suction group 3 and the lower suction group 4 are released from the suction of the pole piece 201 or are blown to make the upper scrap edge 202 or the lower scrap edge 203 separate. At the same time, the upper scrap edge collection group 61 sucks away the upper scrap edge 202, and the lower suction group 4 sucks away the lower scrap edge 203. In this embodiment, the upper scrap edge collection group 61 and the lower scrap edge collection group 62 are provided, which reduces the workload of manual collection of scrap edges and cleaning of the workshop, improves the automation degree, operation efficiency of the device, and improves the cleanliness of the workshop environment.

[0060] Of course, the upper scrap edge collection group 61 and the lower scrap edge collection group 62 can also adsorb dust during the cutting of the material belt 200 by the laser cutting group 5, which improves the cutting quality.

[0061] Referring to Figures 4-6 When cutting by the laser cutting group 5, in order to ensure that the newly formed material belt free end is flat and reduce the shaking of the material belt 200 caused by cutting, specifically, the first support 1 is provided with a right side suction member 9, and the cutting station 21 is arranged adjacent to the right side suction member 9. During cutting, the right side suction member 9 fixes the cutting area 204 of the material belt 200, which can make the laser cutting group 5 cut a flat free end and reduce the cutting area 204 to reduce the formation of burrs.

[0062] Referring to Figures 4-5 From the above embodiment, it can be seen that the cutting position of the material belt 200 is located at the upper part, lower part and right side of the cutting station 21. In order to reduce the dust when cutting the material belt 200 on the right side of the cutting station 21, more specifically, the scrap suction mechanism 6 includes a side edge suction member 63; the side edge suction member 63 is arranged above the right side suction member 9 to further reduce the dust when cutting the material belt 200.

[0063] Referring to Figure 4 In an embodiment, the first support 1 is provided with a driving transmission group 7 away from the transmission assembly 2, which is used to transmit the material belt to the first support 1. The driving transmission group 7 provides power to the material belt 200, which facilitates the lead-in of the material belt, and the driving transmission group 7 can uniformly tension the material belt 200, avoid deformation caused by unbalanced tension when cutting the pole piece 201, and improve the quality of the cut pole piece.

[0064] Further, the driving transmission group 7 includes a driving roller 71 and a driven roller 72 arranged parallel to each other, and the material belt 200 travels between the driving roller 71 and the driven roller 72.

[0065] Referring toFigure 5 In an embodiment, the upper adsorption group 3 comprises a tab adsorption part 31 and a scrap edge adsorption part 32, the tab adsorption part 31 is provided with a recess 311 on the side facing the conveying assembly 2, and the scrap edge adsorption part 32 is provided with a protrusion 321 embedded in the recess 311.

[0066] That is, the cutting position of the laser cutting group 5 is located between the recess 311 and the protrusion 321, by reasonably dividing the area of the upper adsorption group 3, enough cutting space is reserved for the laser, and the cutting speed is improved.

[0067] Referring to Figure 7 , Figure 8 In an embodiment, a second support 8 is further included, the conveying assembly 2 is rotatably arranged on the second support 8, the second support 8 is provided with a first adsorption cavity 81 and a second adsorption cavity 82, and the second support 8 is provided with a first suction member 91 and a second suction member 92 on the side.

[0068] The cutting station 21 is arranged adjacent to the second adsorption cavity 82, and the second suction member 92 is used to control the adsorption force of the second adsorption cavity 82.

[0069] The first adsorption cavity 81 is arranged on the side of the second adsorption cavity 82 away from the first support 1, and the first suction member 91 is used to control the adsorption force of the first adsorption cavity 81. In this way, the adsorption forces of the first adsorption cavity 81 and the second adsorption cavity 82 can be adjusted separately, the stability of the material belt is improved, and the cutting quality of the pole piece is improved.

[0070] Referring to Figure 7 In particular, the second support 8 is provided with a first driven wheel 831, a second driven wheel 832, a third driven wheel 833, a partition plate 834 and a driving wheel 835, the driving wheel 835, the first driven wheel 831, the second driven wheel 832 and the third driven wheel 833 are arranged at four corner positions of the second support 8, and the first adsorption cavity 81 and the second adsorption cavity 82 are divided by the partition plate 834.

[0071] More specifically, the cutting station 21 is located on the second adsorption cavity 82, and the second support 8 is provided with a third suction member 93 on the side away from the laser cutting group 5. The third suction member 93 is used to adsorb the dust of the conveying assembly 2, and further reduces the pollution of the dust to the cutting environment.

[0072] Referring to Figure 5In an embodiment, the conveying assembly 2 comprises a perforated belt 24, an upper suction member 22 and a lower suction member 23, the upper suction member 22 is arranged on one side of the perforated belt 24, the lower suction member 23 is arranged on the other side of the perforated belt 24, the perforated belt 24 is used to suck the middle part of the pole piece 201, the upper suction member 22 is used to suck and fix the upper edge 206 of the pole piece 201, and the lower suction member 23 is used to suck and fix the lower edge 207 of the pole piece 201, so as to improve the stability of the pole piece 201 during conveying.

[0073] The above is a specific description of the preferred embodiment of the utility model, but the utility model is not limited to the embodiment, and various equivalent modifications or replacements can be made by those skilled in the art without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.

Claims

1. An electrode piece laser cutting and transporting integrated device, characterized in that, The application relates to a laser cutting device for cutting a material belt into a plurality of pole pieces. The device comprises a first support (1), a transmission assembly (2), an upper adsorption assembly (3), a lower adsorption assembly (4) and a laser cutting assembly (5). The first support (1) is arranged adjacent to the transmission assembly (2) and on the input end side of the transmission assembly (2) along the transmission direction of the transmission assembly (2), the transmission assembly (2) is used for adsorbing the middle part of the material belt (200) and moving the material belt (200), and the first support (1) is used for supporting the material belt (200). The upper adsorption assembly (3) is arranged on one side of the transmission assembly (2), the lower adsorption assembly (4) is arranged on the other side of the transmission assembly (2), part of the transmission assembly (2), the upper adsorption assembly (3) and the lower adsorption assembly (4) are provided with a cutting station (21), the cutting station (21) is arranged adjacent to the first support (1), the laser cutting assembly (5) is arranged above the cutting station (21), and the laser cutting assembly (5) is used for cutting the material belt (200) on the cutting station (21) into pole pieces (201). The upper adsorption assembly (3) is arranged on one side of the cutting station (21), and when the material belt (200) is cut, the upper adsorption assembly (3) is used for adsorbing the upper part of the material belt (200). The lower adsorption assembly (4) is arranged on the other side of the cutting station (21), and when the material belt (200) is cut, the lower adsorption assembly (4) is used for adsorbing the lower part of the material belt (200).

2. The polar piece laser cutting and transporting integrated device of claim 1, wherein: The cutting station (21) is provided with a waste adsorption mechanism (6) adjacent to the cutting station (21), and the waste adsorption mechanism (6) is used for adsorbing the dust generated when the laser cutting assembly (5) cuts the material belt (200).

3. The polar piece laser cutting and transporting integrated device of claim 2, wherein: The waste adsorption mechanism (6) comprises an upper waste edge collection assembly (61) and a lower waste edge collection assembly (62), the upper waste edge collection assembly (61) is arranged on one side of the upper adsorption assembly (3) away from the lower adsorption assembly (4), and the lower waste edge collection assembly (62) is arranged on one side of the lower adsorption assembly (4) away from the upper adsorption assembly (3).

4. The polar piece laser cutting and transporting integrated device of claim 2, wherein: The first support (1) is provided with a right side adsorption assembly (9) adjacent to the cutting station (21).

5. The polar piece laser cutting and transporting integrated device of claim 4, wherein: The waste adsorption mechanism (6) comprises a side edge adsorption assembly (63). The side edge adsorption assembly (63) is arranged above the right side adsorption assembly (9).

6. The pole piece laser cutting and transporting integrated device of claim 1, wherein: The side of the first support (1) away from the transmission assembly (2) is provided with a driving transmission assembly (7), and the driving transmission assembly (7) is used for transmitting the material belt to the first support (1).

7. The pole piece laser cutting and transporting integrated device of claim 6, wherein: The driving transmission assembly (7) comprises driving rollers (71) and passive rollers (72) arranged in parallel to each other, and the material belt (200) is arranged between the driving rollers (71) and the passive rollers (72).

8. The polar piece laser cutting and transporting integrated device of claim 1, wherein: The upper adsorption group (3) comprises a tab adsorption part (31) and a scrap edge adsorption part (32), the tab adsorption part (31) is provided with a recess (311) on the side facing the conveying assembly (2), and the scrap edge adsorption part (32) is provided with a protrusion (321) embedded in the recess (311).

9. The pole piece laser cutting and transporting integrated device of claim 1, wherein: A second support (8) is further included, the conveying assembly (2) is rotatably arranged on the second support (8), the second support (8) is provided with a first adsorption cavity (81) and a second adsorption cavity (82), and the second support (8) is provided with a first suction member (91) and a second suction member (92) on the side; The cutting station (21) is arranged adjacent to the second adsorption cavity (82), and the second suction member (92) is used to control the adsorption force of the second adsorption cavity (82). The first adsorption cavity (81) is arranged on the side of the second adsorption cavity (82) away from the first support (1), and the first suction member (91) is used to control the adsorption force of the first adsorption cavity (81).

10. The pole piece laser cutting and transporting integrated device of claim 1, wherein: The conveying assembly (2) comprises a perforated conveyor belt (24), an upper adsorption member (22) and a lower adsorption member (23), the upper adsorption member (22) is arranged on one side of the perforated conveyor belt (24), the lower adsorption member (23) is arranged on the other side of the perforated conveyor belt (24), the perforated conveyor belt (24) is used to adsorb the middle part of the tab (201), the upper adsorption member (22) is used to adsorb and fix the upper edge of the tab (201), and the lower adsorption member (23) is used to adsorb and fix the lower edge of the tab (201).

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