Laser Die Cutting and Slitting Machine

Abstract

The embodiment of the present invention provides a laser die-cutting and slitting integrated machine, which relates to the field of lithium battery manufacturing technology. The laser die-cutting and slitting integrated machine includes an unwinding and correcting component, a first laser cutting component, a second laser cutting component, a third laser cutting component, a first slitting mechanism, a second slitting mechanism and a winding component. The first laser cutting component, the second laser cutting component and the third laser cutting component are arranged in sequence to realize the cutting of the pole piece strip, and a pole piece strip is cut into 6 pole ears of the battery core, and then the pole piece strip is slid by the slitting mechanism, and is cut into 6 pole pieces, realizing the laser cutting "one out of six" process, which greatly improves the production efficiency. In addition, it is compatible with the "one out of five", "one out of four", "one out of three" and "one out of two" processes, and has high compatibility and good applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing, and in particular to a laser die-cutting and slitting integrated machine. Background Art

[0002] Existing laser die-cutting and slitting machines can only realize the "one out of four" or "one out of two" process, that is, one pole piece strip is cut into 4 or 2 pole pieces with pole ears, which makes the overall efficiency low and the compatibility poor, and cannot realize the "one out of six" process. Summary of the invention

[0003] The objects of the present invention include, for example, providing a laser die-cutting and slitting integrated machine which can realize the "one out of six" process, has good compatibility, and improves cutting efficiency.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In the first aspect, the present invention provides a laser die-cutting and slitting machine, including an unwinding and correcting component, a first laser cutting component, a second laser cutting component, a third laser cutting component, a first slitting mechanism and a second slitting mechanism, wherein the first laser cutting component is arranged on the discharge side of the unwinding and correcting component, and is used to cut at least one side edge of the pole piece strip conveyed by the unwinding and correcting component, the second laser cutting component is arranged on the discharge side of the first laser cutting component, and is used to divide the pole piece strip into a pole piece to be processed and a first intermediate pole piece, the third laser cutting component is arranged on the discharge side of the second laser cutting component, and is used to cut the pole piece to be processed and form a second intermediate pole piece, the first slitting mechanism is arranged on the discharge side of the second laser cutting component, and is used to strip the first intermediate pole piece into two first formed pole pieces, and the second slitting mechanism is arranged on the discharge side of the third laser cutting component, and is used to strip the second intermediate pole piece into two second formed pole pieces.

[0006] In an optional embodiment, there are two first intermediate pole pieces, and a stacking roller group is further provided between the second laser cutting assembly and the first slitting mechanism, and the stacking roller group is used to overlap the two first intermediate pole pieces together.

[0007] In an optional embodiment, the first laser cutting assembly, the second laser cutting assembly and the third laser cutting assembly each include two laser cutting machines, and the two laser cutting machines are arranged opposite to each other.

[0008] In an optional embodiment, the unwinding correction assembly includes an unwinding mechanism and a feeding correction mechanism, the unwinding mechanism is used to unwind the pole piece strip, and the feeding correction mechanism is arranged on the discharge side of the unwinding mechanism to correct the pole piece strip.

[0009] In an optional embodiment, the laser die-cutting and slitting machine further includes a winding assembly, which is disposed on the discharge side of the first intermediate pole piece and the second intermediate pole piece and is used for winding the first molded pole piece and the second molded pole piece.

[0010] In an optional embodiment, the winding assembly includes a first winding shaft and a second winding shaft, the first winding shaft is arranged on the discharge side of the first slitting mechanism, and is used to wind up one of the first molded pole pieces and one of the second molded pole pieces, and the second winding shaft is arranged on the discharge side of the second slitting mechanism, and is used to wind up another second molded pole piece and another second molded pole piece.

[0011] In an optional embodiment, a pole piece correction mechanism is further provided between the first laser cutting assembly and the second laser cutting assembly, and the pole piece correction mechanism is used to cut the pole piece strip entering the second laser cutting assembly.

[0012] In an optional embodiment, an air knife dust removal mechanism is further provided between the first laser cutting assembly and the second laser cutting assembly, and the air knife dust removal mechanism is used to remove dust from the pole piece strip.

[0013] In an optional embodiment, a first waste box is further provided on the discharge side of the first laser cutting assembly, and the first waste box is used to collect waste generated by cutting by the first laser cutting assembly.

[0014] In an optional embodiment, a second waste box is further provided on the discharge side of the third laser cutting assembly, and the second waste box is used to collect waste generated by cutting of the third laser cutting assembly.

[0015] The beneficial effects of the embodiments of the present invention include, for example:

[0016] The laser die-cutting and slitting integrated machine provided by the present invention realizes the cutting of the electrode sheet strip by means of a first laser cutting component, a second laser cutting component and a third laser cutting component which are arranged in sequence, cuts out the pole ears of 6 battery cells from one electrode sheet strip, and then slits it into 6 electrode sheets through a slitting mechanism, thus realizing the laser cutting "one out of six" process and greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of the laser die-cutting and slitting integrated machine provided by the present invention;

[0019] Figure 2 A schematic diagram of the partial structure of the laser die-cutting and slitting integrated machine provided by the present invention;

[0020] Figure 3 A process flow chart of the laser die-cutting and slitting integrated machine provided by the present invention to realize "one out of six";

[0021] Figure 4 A process flow chart of the laser die-cutting and slitting integrated machine provided by the present invention to realize "one out of five";

[0022] Figure 5 A process flow chart of the laser die-cutting and slitting integrated machine provided by the present invention to realize "one out of four";

[0023] Figure 6 A process flow chart of the "one out three" laser die-cutting and slitting integrated machine provided by the present invention.

[0024] Icons: 100-laser die-cutting and slitting machine; 110-unwinding correction component; 111-feeding correction mechanism; 130-first laser cutting component; 131-pole piece correction mechanism; 133-air knife dust removal mechanism; 135-first waste box; 150-second laser cutting component; 151-overlapping roller group; 153-second waste box; 160-third laser cutting component; 170-first slitting mechanism; 180-second slitting mechanism; 190-winding component; 191-first winding shaft; 193-second winding shaft. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 on the present invention.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] As disclosed in the background technology, the existing laser die-cutting and slitting machines can only realize the "one out of four" or "one out of two" processes. Specifically, the existing laser "one out of two" cutting and slitting process is that two lasers cut the two sides of the pole ears at the same time, and then slitting after cutting, which is compatible with 1 out of 1; at the same time, the existing laser "one out of four" cutting and slitting process is that two lasers first cut the two sides of the pole ears, and the other two lasers cut the middle pole ears, and then slitting after cutting, which is not compatible with other "one out of three" and "one out of two" processes. And there is no equipment in the prior art that can realize the laser "one out of six" cutting and slitting process, which makes the overall production efficiency low.

[0031] In order to solve the above problems, the present invention provides a laser die-cutting and slitting machine. It should be noted that the features in the embodiments of the present invention can be combined with each other without conflict.

[0032] First embodiment

[0033] Please refer to Figure 1 and Figure 2 This embodiment provides a laser die-cutting and slitting machine 100, which can realize the laser "one out of six" cutting and slitting process, greatly improving the laser cutting efficiency, and is compatible with "one out of five", "one out of four", "one out of three", and "one out of two" processes, and has strong adaptability.

[0034] The laser die-cutting and slitting integrated machine 100 provided in this embodiment includes an unwinding and correcting component 110, a first laser cutting component 130, a second laser cutting component 150, a third laser cutting component 160, a first slitting mechanism 170, a second slitting mechanism 180 and a winding component 190. The first laser cutting component 130 is arranged on the discharge side of the unwinding and correcting component 110, and is used to cut at least one side edge of the pole piece material belt conveyed by the unwinding and correcting component 110. The second laser cutting component 150 is arranged on the first laser cutting component 130. The discharge side is used to divide the pole piece strip into the pole piece to be processed and the first intermediate pole piece. The third laser cutting assembly 160 is arranged on the discharge side of the second laser cutting assembly 150, and is used to cut the pole piece to be processed and form the second intermediate pole piece. The first stripping mechanism 170 is arranged on the discharge side of the second laser cutting assembly 150, and is used to strip the first intermediate pole piece into at least two first formed pole pieces. The second stripping mechanism 180 is arranged on the discharge side of the third laser cutting assembly 160, and is used to strip the second intermediate pole piece into two second formed pole pieces. The winding assembly 190 is arranged on the discharge side of the first stripping mechanism 170 and the second stripping mechanism 180, and is used to roll up the first formed pole piece and the second formed pole piece.

[0035] In this embodiment, the unwinding and correcting assembly 110, the first laser cutting assembly 130, the second laser cutting assembly 150, the third laser cutting assembly 160, the first slitting mechanism 170, the second slitting mechanism 180 and the winding assembly 190 are all arranged on a mounting plate, and the pole piece strip passes through the unwinding and correcting assembly 110, the first laser cutting assembly 130, the second laser cutting assembly 150, the third laser cutting assembly 160, the first slitting mechanism 170 / the second slitting mechanism 180 and the winding assembly 190 in sequence, realizing the laser cutting and slitting of the pole piece strip, and realizing the "one out of six" process.

[0036] It should be noted that the “discharging side” mentioned in this embodiment refers to the downstream side of the discharge direction of the electrode strip, that is, the electrode strip is taken out of the device from the discharging side and enters the next device.

[0037] In this embodiment, the first laser cutting component 130 is used to cut the pole ears on both sides of the pole piece strip to produce two edge wastes. The second laser cutting component 150 is used to cut the pole ears in the middle of the pole piece strip and play a role of cutting and separating to form two first intermediate pole pieces without producing edge wastes. The third laser cutting component 160 is used to cut the pole ears on both sides of the edge of the pole piece to be processed to produce two edge wastes to form a second intermediate pole piece. The two first intermediate pole pieces are stripped by the first stripping mechanism 170 to form four pole pieces, and the second intermediate pole piece is stripped by the second stripping mechanism 180 to form two pole pieces, realizing the "one out of six" process.

[0038] It should be noted that in this embodiment, the second laser cutting component 150 is arranged above the third laser cutting component 160. Since the second laser cutting component 150 does not generate waste, there is no need to set up a waste box. The distance between the second laser cutting component 150 and the third laser cutting component 160 can be made smaller, the structure is more compact, and the layout space is saved.

[0039] In this embodiment, there are two first intermediate pole pieces, and a superimposing roller set 151 is further provided between the second laser cutting assembly 150 and the first stripping mechanism 170. The superimposing roller set 151 is used to overlap the two first intermediate pole pieces. By providing the superimposing roller set 151, the two first intermediate pole pieces can be overlapped, and the first stripping mechanism 170 can directly stripe the two first intermediate pole pieces.

[0040] In this embodiment, the first laser cutting assembly 130, the second laser cutting assembly 150 and the third laser cutting assembly 160 each include two laser cutting machines, which are arranged opposite to each other. Cutting is performed by the two laser cutting machines arranged opposite to each other, thereby cutting both sides of the pole piece strip and both sides of the pole piece to be processed to form pole ears, and the pole piece strip can be cut into two first intermediate pole pieces and the pole piece to be processed.

[0041] In this embodiment, the unwinding correction component 110 includes an unwinding mechanism (not shown) and a feeding correction mechanism 111. The unwinding mechanism is used to unwind the pole piece strip, and the feeding correction mechanism 111 is arranged on the discharge side of the unwinding mechanism to correct the pole piece strip. Specifically, the unwinding mechanism realizes the unwinding of the pole piece strip through the unwinding shaft, and the pole piece strip enters the first laser cutting component 130 after being corrected by the feeding correction mechanism 111. The specific structure and working principle of the unwinding mechanism and the feeding correction mechanism 111 can refer to the existing unwinding and correction structures.

[0042] In this embodiment, the winding assembly 190 includes a first winding shaft 191 and a second winding shaft 193. The first winding shaft 191 is arranged at the discharge side of the first slitting mechanism 170, and is used to wind up one of the first formed pole pieces and one of the second formed pole pieces. The second winding shaft 193 is arranged at the discharge side of the second slitting mechanism 180, and is used to wind up another second formed pole piece and another second formed pole piece. Specifically, the first winding shaft 191 and the second winding shaft 193 are used to wind up the formed pole pieces, and the first formed pole pieces and the second formed pole pieces are staggered and overlapped, so that the final formed laminate maintains a unified structure.

[0043] In this embodiment, a pole piece deviation correction mechanism 131 is further provided between the first laser cutting assembly 130 and the second laser cutting assembly 150 , and the pole piece deviation correction mechanism 131 is used to cut the pole piece material strip entering the second laser cutting assembly 150 .

[0044] In this embodiment, a wind knife dust removal mechanism 133 is also provided between the first laser cutting assembly 130 and the second laser cutting assembly 150, and the wind knife dust removal mechanism 133 is used to remove dust from the pole piece strip. Specifically, the wind knife dust removal mechanism 133 includes a first wind knife dust collector and a second wind knife dust collector, the first wind knife dust collector is connected to an external air pump through a pipeline, so as to blow the surface of one side of the pole piece strip to achieve dust removal, and the second wind knife dust collector is connected to an external air pump through a pipeline, so as to blow the surface of the other side of the pole piece strip to achieve dust removal. The specific structure and working principle of the wind knife dust collector can refer to the wind knife dust removal structure in the prior art.

[0045] In this embodiment, a first waste box 135 is further provided at the discharge side of the first laser cutting assembly 130, and the first waste box 135 is used to collect waste generated by the cutting of the first laser cutting assembly 130. Specifically, the first waste box 135 is used to collect two edge wastes generated after the first laser cutting assembly 130 cuts the pole ears on both sides of the pole sheet strip.

[0046] In this embodiment, a second waste box 153 is further provided at the discharge side of the third laser cutting assembly 160, and the second waste box 153 is used to collect waste generated by the cutting of the third laser cutting assembly 160. Specifically, the second waste box 153 is used to collect two edge wastes generated after the third laser cutting assembly 160 cuts the pole ears at both side edges of the pole piece to be processed.

[0047] refer to Figure 3The laser die-cutting and slitting integrated machine 100 provided in this embodiment realizes the "one out of six" process as follows: the pole piece strip is unwound by the unwinding mechanism, and enters the first laser cutting component 130 after being corrected by the feeding correction mechanism 111. The first laser cutting component 130 performs pole ear cutting on the two side edges of the pole piece strip, and sends the two edge wastes generated into the first waste box 135. After the pole piece strip passes through the first laser cutting component 130, it is dusted and corrected by the wind knife and then enters the second laser cutting component 150. The second laser cutting component 150 performs pole ear cutting and separation on the middle part of the pole piece strip, so that the pole piece strip is divided into three sections, wherein the central part forms the pole piece to be processed, and the parts on both sides form two first intermediate pole pieces, each first intermediate pole piece. Both sides of the sheet are cut with pole ears, and no waste edges are generated at this time, so the second laser cutting assembly 150 can be directly arranged above the third laser cutting assembly. After passing through the second laser cutting assembly 150, two first intermediate pole pieces are laminated by the lamination roller group and enter the first stripping mechanism 170 for stripping to form four first formed pole pieces. The pole piece to be processed moves downward and enters the third laser cutting assembly 160. The third laser cutting assembly 160 cuts the pole ears on both sides of the pole piece to be processed to form a second intermediate pole piece. At this time, two edge wastes are generated and collected by the second waste box 153. The second intermediate pole piece enters the second stripping mechanism 180 for stripping to form two second formed pole pieces. The first formed pole piece and the second formed pole piece are rolled up by the rear winding assembly 190. The "one out of six" process is realized by the first laser cutting assembly 130, the second laser cutting assembly 150 and the third laser cutting assembly 160.

[0048] refer to Figure 4 It should be noted that the laser die-cutting and slitting machine 100 provided in this embodiment is also compatible with the "one-out-of-five" process. Specifically, in the process of realizing the "one-out-of-five" process, the first laser cutting component 130 only cuts the pole ear on one side of the pole piece strip (for example, the lower side), and at the same time, the second laser cutting component 150 divides the pole piece strip into three sections to form two first intermediate pole pieces and a pole piece to be processed, wherein the shape of the first intermediate pole piece on the upper side is the same as the final first formed pole piece, so it does not need to be slit by the first slitting mechanism 170, and the first intermediate pole piece on the lower side is slit by the first slitting mechanism 170, and the pole piece to be processed is cut by the third laser cutting component 160 and then slid by the second slitting mechanism 180, so that three first formed pole pieces and two second formed pole pieces are finally formed, realizing the laser cutting "one-out-of-five" process.

[0049] refer to Figure 5It should also be noted that the laser die-cutting and slitting integrated machine 100 provided in this embodiment is also compatible with the "one-out-four" process. Specifically, in the process of realizing the "one-out-four" process, the first laser cutting component 130 performs pole ear cutting on both sides of the pole piece strip, and at the same time, the second laser cutting component 150 divides the pole piece strip into two sections to form a first intermediate pole piece and a pole piece to be processed. The first intermediate pole piece is formed into two first formed pole pieces by the first slitting mechanism 170, and the pole piece to be processed is formed into a second intermediate pole piece after passing through the third laser cutting component 160. The second intermediate pole piece is formed into two second formed pole pieces after passing through the second slitting mechanism 180, thereby realizing the "one-out-four" process.

[0050] refer to Figure 6 It should also be noted that the laser die-cutting and slitting machine 100 provided in this embodiment is also compatible with the "one-out-three" process. Specifically, in the process of realizing the "one-out-three" process, the first laser component cuts the pole ear on one side of the pole piece strip (for example, the upper side), and at the same time, the second laser cutting component 150 divides the pole piece strip into two sections, forming a first intermediate pole piece and a pole piece to be processed, wherein the shape of the first intermediate pole piece is the same as the shape of the first formed pole piece, and no stripping is required. The pole piece to be processed passes through the third laser cutting component 160 to form a second intermediate pole piece, and the second intermediate pole piece passes through the second slitting mechanism 180 to form two second formed pole pieces, realizing the "one-out-three" process.

[0051] At the same time, the laser die-cutting and slitting machine 100 can realize the "one out of two" process by omitting the actions of the second laser cutting component 150 and the third laser cutting component 160, which will not be introduced in detail here.

[0052] In summary, the laser die-cutting and slitting integrated machine 100 provided in this embodiment realizes the cutting of the pole piece strip by sequentially setting the first laser cutting assembly 130, the second laser cutting assembly 150 and the third laser cutting assembly 160, and cuts the pole ears of 6 battery cells from a pole piece strip, and then divides it into 6 pole pieces through the slitting mechanism, realizing the laser cutting "one out of six" process, which greatly improves the production efficiency. In addition, it is compatible with the "one out of five", "one out of four", "one out of three" and "one out of two" processes, and has high compatibility and good applicability.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A laser die-cutting and slitting machine, characterized in that: It includes an unwinding and correcting component, a first laser cutting component, a second laser cutting component, a third laser cutting component, a first stripping mechanism and a second stripping mechanism, wherein the first laser cutting component is arranged on the discharge side of the unwinding and correcting component, and is used to cut at least one side edge of the pole piece strip conveyed by the unwinding and correcting component, the second laser cutting component is arranged on the discharge side of the first laser cutting component, and is used to divide the pole piece strip into a pole piece to be processed and a first intermediate pole piece, the third laser cutting component is arranged on the discharge side of the second laser cutting component, and is used to cut the pole piece to be processed and form a second intermediate pole piece, the first stripping mechanism is arranged on the discharge side of the second laser cutting component, and is used to strip the first intermediate pole piece into at least two first formed pole pieces, and the second stripping mechanism is arranged on the discharge side of the third laser cutting component, and is used to strip the second intermediate pole piece into two second formed pole pieces; There are two first intermediate pole pieces, and a stacking roller group is also arranged between the second laser cutting assembly and the first stripping mechanism, and the stacking roller group is used to overlap the two first intermediate pole pieces together; the first laser cutting assembly, the second laser cutting assembly and the third laser cutting assembly each include two laser cutting machines, and the two laser cutting machines are arranged opposite to each other.

2. The laser die-cutting and slitting machine according to claim 1, characterized in that: The unwinding and correcting assembly includes an unwinding mechanism and a feeding correcting mechanism. The unwinding mechanism is used to unwind the pole piece strip. The feeding correcting mechanism is arranged on the discharge side of the unwinding mechanism and is used to correct the pole piece strip.

3. The laser die-cutting and slitting machine according to claim 1, characterized in that: The laser die-cutting and slitting machine further includes a winding assembly, which is disposed on the discharging side of the first slitting mechanism and the second slitting mechanism and is used for winding the first molded pole piece and the second molded pole piece.

4. The laser die-cutting and slitting machine according to claim 3, characterized in that: The winding assembly includes a first winding shaft and a second winding shaft. The first winding shaft is arranged on the discharge side of the first slitting mechanism, and is used to wind up one of the first molded pole pieces and one of the second molded pole pieces. The second winding shaft is arranged on the discharge side of the second slitting mechanism, and is used to wind up another second molded pole piece and another second molded pole piece.

5. The laser die-cutting and slitting machine according to claim 1, characterized in that: A pole piece deviation correction mechanism is also provided between the first laser cutting assembly and the second laser cutting assembly, and the pole piece deviation correction mechanism is used to cut the pole piece material strip entering the second laser cutting assembly.

6. The laser die-cutting and slitting machine according to claim 1, characterized in that: An air knife dust removal mechanism is also provided between the first laser cutting assembly and the second laser cutting assembly, and the air knife dust removal mechanism is used to remove dust from the pole piece strip.

7. The laser die-cutting and slitting machine according to claim 1, characterized in that: A first waste box is also provided at the discharge side of the first laser cutting assembly, and the first waste box is used to collect waste generated by cutting by the first laser cutting assembly.

8. The laser die-cutting and slitting machine according to claim 1, characterized in that: A second waste box is also provided on the discharge side of the third laser cutting assembly, and the second waste box is used to collect waste generated by cutting of the third laser cutting assembly.

Images