Spraying device of laser cutting auxiliary solution and laser cutting equipment

Abstract

The invention provides a laser cutting auxiliary solution spraying device and laser cutting equipment, and relates to the technical field of battery preparation, the device comprises a solution input assembly, a spraying assembly and a quantitative control assembly, the solution input assembly is provided with a solution inlet end and a solution outlet end, and the solution inlet end is configured to input an auxiliary solution; the spraying assembly is connected to the liquid outlet end and is used for uniformly spraying an auxiliary solution to a laser cutting area of the pole piece; the quantitative control assembly is connected to the solution input assembly, selectively communicates with the liquid inlet end and the liquid outlet end, and is configured to extract the auxiliary solution with the preset volume from the liquid inlet end and convey the auxiliary solution to the liquid outlet end. Compared with the prior art, the liquid spraying device for the laser cutting auxiliary solution, provided by the embodiment of the invention, can quantitatively and uniformly spray to form a layer of auxiliary solution, can reduce deposition of molten beads and splashes during laser cutting, and meanwhile, reduces the range of a heat affected zone, so that inconsistency of cutting effects is avoided, and the cutting quality is improved. And the cutting stability and uniformity are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of battery preparation, and in particular to a liquid spraying device for a laser cutting auxiliary solution and laser cutting equipment. Background Art

[0002] In the lithium battery manufacturing process, high-quality cutting of pole pieces is crucial. Traditional mechanical cutting methods are prone to burr problems due to wear and tear, and uneven cutting effects, which affect battery performance and safety. In addition, frequent tool changes increase time and maintenance costs.

[0003] When cutting pole pieces, existing laser cutting technology often causes problems such as melt beads, burrs and excessive heat-affected zones, which limits its application in actual production. Laser cutting, as a non-contact processing technology, has been widely used in pole piece cutting. It uses a high-power laser beam to melt or vaporize the material, and uses dust removal technology to clean the dust to complete the cutting. However, when laser cutting lithium-ion battery pole pieces, the upper and lower layers of the pole piece structure are active physical layers, and the middle layer is aluminum foil. Due to the complexity of the composition and structure of the active material layer, the existing laser cutting technology often produces melt beads, burrs and a large heat-affected zone during the processing process due to improper laser parameter settings or material characteristics, which affects the cutting quality. To solve these problems, existing studies have attempted to improve the cutting quality by optimizing the laser type (such as using picosecond and femtosecond lasers) and adjusting process parameters.

[0004] Although these improvement technologies have their own effectiveness, it is still difficult to fully meet the needs of efficient mass production. A related patent proposes a method of adding a surface film to assist in laser processing of pole pieces (patent number CN118156428A), which is mainly used for laser processing of positive pole pieces. This method proposes covering the positive pole piece with a heat-absorbing film layer, which can avoid excessive heat effects and the generation of molten beads during the pole piece cutting process. At the same time, there are also attempts to perform coating in the prior art. However, this method still has the disadvantages of lack of coating / film auxiliary equipment and difficulty in ensuring the uniformity and consistency of the coating / film layer, which can easily cause uneven thickness of the coating / film layer or large differences in spraying amount, and poor stability. Summary of the invention

[0005] The object of the present invention is to provide a liquid spraying device for laser cutting auxiliary solution and laser cutting equipment, which can quantitatively and evenly spray to form a layer of auxiliary solution, reduce the deposition of molten beads and spatters during laser cutting, and reduce the range of the heat affected zone.

[0006] In a first aspect, the present invention provides a liquid spraying device for a laser cutting auxiliary solution, comprising:

[0007] A solution input component, the solution input component having a liquid inlet end and a liquid outlet end, the liquid inlet end being configured to input an auxiliary solution;

[0008] A spraying assembly, connected to the liquid outlet, for uniformly spraying the auxiliary solution onto the laser cutting area of ​​the electrode piece;

[0009] A quantitative control component is connected to the solution input component and selectively communicated with the liquid inlet and the liquid outlet, and is configured to extract a preset volume of the auxiliary solution from the liquid inlet and deliver it to the liquid outlet.

[0010] In an optional embodiment, the quantitative control component includes a frame, a driving member and a suction cylinder, the driving member and the suction cylinder are arranged relative to each other on the frame, and the driving member is connected to the piston rod of the suction cylinder, the cylinder body of the suction cylinder is provided with a cylinder pipe joint, the cylinder pipe joint is connected to the solution input component and is selectively connected to the liquid inlet end and the liquid outlet end, the driving member is configured to drive the piston rod of the suction cylinder to reciprocate within a preset stroke, so that the suction cylinder extracts a preset volume of the auxiliary solution from the liquid inlet end or transports a preset volume of the auxiliary solution to the liquid outlet end.

[0011] In an optional embodiment, the driving member includes a driving cylinder, the piston rod of the driving cylinder is provided with a connecting block, and the connecting block is connected to the piston rod of the suction cylinder so that the piston rod of the driving cylinder and the piston rod of the suction cylinder move synchronously. An electromagnetic valve is provided on the frame, and the electromagnetic valve is connected to the driving cylinder. The driving cylinder is configured to drive the piston rod of the suction cylinder to reciprocate under the control of the electromagnetic valve.

[0012] In an optional embodiment, a limit plate is further provided on the connecting block, a limit hole is formed on the limit plate, a limit bolt is assembled in the limit hole, and the limit bolt is configured to abut against the end face of the cylinder body of the driving cylinder to limit the stroke of the driving cylinder.

[0013] In an optional embodiment, the solution input component includes a two-way connecting block and a three-way pipe head, the liquid inlet end and the liquid outlet end are located at both ends of the two-way connecting block, and the liquid inlet end is provided with a liquid inlet pipe, and the liquid outlet end is provided with a liquid outlet pipe, and the liquid outlet pipe is connected to the spraying component, and the two-way connecting block is provided with a liquid inlet chamber and a liquid outlet chamber separated from each other, the liquid inlet chamber is connected with the liquid inlet pipe, and the liquid outlet chamber is connected with the liquid outlet pipe, the first end of the three-way pipe head is connected to the cylinder pipe joint, and the second end and the third end of the three-way pipe head are respectively connected to the liquid inlet chamber and the liquid outlet chamber in one way.

[0014] In an optional embodiment, an intake throttling speed regulating valve and an exhaust throttling speed regulating valve are provided on the two-way connecting block, the intake throttling speed regulating valve is provided close to the liquid inlet end, and the exhaust throttling speed regulating valve is provided close to the liquid outlet end, the second end of the three-way pipe head is connected to the intake throttling speed regulating valve, and the third end of the three-way pipe head is connected to the exhaust throttling speed regulating valve.

[0015] In an optional embodiment, the spray assembly includes a diverter pipe head and a liquid spray head, a first cavity is arranged in the liquid spray head, and a liquid spray slit connected to the first cavity is arranged at the bottom end of the liquid spray head, one end of the diverter pipe head is connected to the liquid outlet end, and at least two diverter pipes are arranged at the other end, and a plurality of the diverter pipes are connected to the liquid spray head and connected to the first cavity.

[0016] In an optional embodiment, a second cavity is further provided in the liquid spray head, the first cavity and the second cavity are arranged in sequence in the liquid spray head along the vertical direction, and a guide slit is provided between the first cavity and the second cavity, and the liquid spray slit is connected to the second cavity.

[0017] In an optional embodiment, the liquid spray head includes a liquid spray body and a liquid spray clamping block, the liquid spray body and the liquid spray clamping block are detachably connected and spliced ​​to form the first cavity and the second cavity, and the guide slit and the liquid spray slit are arranged between the liquid spray body and the liquid spray clamping block.

[0018] In a second aspect, the present invention provides a laser cutting device, comprising a laser cutting device and a liquid spraying device for a laser cutting auxiliary solution as described in any one of the aforementioned embodiments, wherein the laser cutting device is arranged on the downstream side of the spraying assembly along the pole piece conveying direction, and is configured to perform laser cutting on the laser cutting area on the pole piece sprayed with the auxiliary solution.

[0019] The beneficial effects of the embodiments of the present invention are:

[0020] The spray device for laser cutting auxiliary solution and the laser cutting equipment provided by the embodiment of the present invention utilize the liquid inlet end of the solution input component to input the auxiliary solution and temporarily store the auxiliary solution, then extract a quantitative volume of the auxiliary solution from the liquid inlet end through the quantitative control component and transport it to the liquid outlet end to ensure the reliable quantitative output of the liquid, and then evenly spray the auxiliary solution to the laser cutting area through the spray component, thereby ensuring the uniformity of the auxiliary solution spraying and the consistency of the single spraying amount. Compared with the prior art, the spray device for laser cutting auxiliary solution provided by the embodiment of the present invention can quantitatively and evenly spray to form a layer of auxiliary solution, which can reduce the deposition of molten beads and spatters during laser cutting, and at the same time reduce the range of the heat-affected zone, thereby avoiding the inconsistency of the cutting effect and greatly improving the stability and uniformity of the cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic diagram of the structure of a liquid spraying device for a laser cutting auxiliary solution provided in an embodiment of the present invention;

[0023] Figure 2 for Figure 1 A first-person perspective diagram of the quantitative control component;

[0024] Figure 3 for Figure 1 A second perspective schematic diagram of the quantitative control component;

[0025] Figure 4 for Figure 1 A schematic diagram of the structure of the solution input component;

[0026] Figure 5 for Figure 1 A cross-sectional view of a solution input assembly;

[0027] Figure 6 for Figure 1 Schematic diagram of the connection of the solution input component;

[0028] Figure 7 for Figure 1 A schematic diagram of the structure of the spraying assembly;

[0029] Figure 8 for Figure 7 a first cross-sectional view of a sprinkler head;

[0030] Fig. 9 for Figure 7 A second cross-sectional view of the sprinkler head.

[0031] Icons: 100-liquid spraying device for laser cutting auxiliary solution; 110-solution input assembly; 111-liquid inlet end; 112-liquid outlet end; 113-two-way connecting block; 1131-liquid inlet cavity; 1133-liquid outlet cavity; 114-three-way pipe head; 115-liquid inlet pipe; 116-liquid outlet pipe; 117-intake throttle speed regulating valve; 118-exhaust throttle speed regulating valve; 130-spraying assembly; 131-diverter pipe head; 132-liquid spraying head; 133 -first cavity; 134-liquid spray slit; 135-second cavity; 136-guiding slit; 137-liquid spray body; 138-liquid spray clamping block; 139-gasket; 150-quantitative control component; 151-frame; 152-driving member; 153-suction cylinder; 1531-cylinder pipe joint; 154-driving cylinder; 155-connecting block; 156-solenoid valve; 157-limiting plate; 158-limiting bolt; 159-nut. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0038] See also Figure 1 The embodiment of the present invention provides a liquid spraying device for a laser cutting auxiliary solution, which can spray a layer of auxiliary solution in a quantitative and uniform manner. During laser cutting, it can reduce the deposition of molten beads and spatters, and at the same time reduce the range of the heat-affected zone, thereby avoiding the inconsistency of the cutting effect and greatly improving the stability and uniformity of the cutting.

[0039] The liquid spraying device 100 for auxiliary solution for laser cutting provided in an embodiment of the present invention comprises a solution input component 110, a spraying component 130 and a quantitative control component 150. The solution input component 110 has a liquid inlet end 111 and a liquid outlet end 112, and the liquid inlet end 111 is configured to input an auxiliary solution; the spraying component 130 is connected to the liquid outlet end 112, and is used to uniformly spray the auxiliary solution onto the laser cutting area of ​​the electrode; the quantitative control component 150 is connected to the solution input component 110, and is selectively connected to the liquid inlet end 111 and the liquid outlet end 112, and is configured to extract a preset volume of auxiliary solution from the liquid inlet end 111 and transport it to the liquid outlet end 112.

[0040] It should be noted that the spray device 100 for the laser cutting auxiliary solution in this embodiment is suitable for laser cutting equipment. The spray device is arranged on the upstream side of the laser cutting device along the pole piece conveying direction, that is, the auxiliary solution is sprayed on the laser cutting area of ​​the pole piece first, and then the laser cutting area is laser cut. The auxiliary solution is a spray characteristic solution, which can significantly reduce the generation of molten beads, improve cutting quality, reduce the heat affected zone, and improve cutting efficiency. In addition, the liquid inlet end 111 of the solution input component 110 can be connected to an external injection pump, which can continuously supply the auxiliary solution.

[0041] During actual spraying, the auxiliary solution is first supplied to the semen end of the solution input component 110 by using a syringe pump, and then the quantitative control component 150 is first connected to the liquid inlet end 111 to extract a preset volume of auxiliary solution, and then connected to the liquid outlet end 112 to deliver the extracted auxiliary solution to the liquid outlet end 112, and finally the spray component 130 performs uniform spraying to achieve a quantitative and uniform spraying action. This spraying scheme can ensure the quantitative uniformity of a single spray, and cooperate with the conventional program control of the spray component 130, so that a layer of auxiliary solution can be formed in the laser cutting area, which can reduce the deposition of molten beads and spatters during subsequent laser cutting, and at the same time reduce the range of the heat-affected zone, avoid the inconsistency of the cutting effect, and greatly improve the stability and uniformity of the cutting.

[0042] See also Figure 2 and Figure 3In some embodiments, the quantitative control component 150 includes a frame 151, a driving member 152 and a suction cylinder 153. The driving member 152 and the suction cylinder 153 are relatively arranged on the frame 151, and the driving member 152 is connected to the piston rod of the suction cylinder. The cylinder body of the suction cylinder is provided with a cylinder pipe joint 1531, and the cylinder pipe joint 1531 is connected to the solution input component 110 and selectively connected to the liquid inlet end 111 and the liquid outlet end 112. The driving member 152 is configured to drive the piston rod of the suction cylinder 153 to reciprocate within a preset stroke, so that the suction cylinder 153 extracts a preset volume of auxiliary solution from the liquid inlet end 111 or delivers a preset volume of auxiliary solution to the liquid outlet end 112. The movement of the piston rod of the suction cylinder 153 is controlled by the driving member 152, thereby indirectly controlling the suction amount of the suction cylinder 153, and the control is more accurate and reliable, and the suction action is more controllable.

[0043] It should be noted that the frame 151 here can be fixedly arranged, and the frame 151 includes a top mounting plate, a bottom mounting plate and a support rod. The top mounting plate and the bottom mounting plate are arranged oppositely and in parallel, and the two ends of the support rod are respectively connected to the top mounting plate and the bottom mounting plate. There can be multiple support rods, for example, there can be 4 support rods, and the 4 support rods are distributed in a rectangular shape between the top mounting plate and the bottom mounting plate. The driving member 152 and the suction cylinder 153 are arranged between the top mounting plate and the bottom mounting plate. Among them, the driving member 152 can be arranged on the top mounting plate, and the suction cylinder 153 can be arranged on the bottom mounting plate, so that the driving member 152 and the suction cylinder 153 are arranged correspondingly up and down, and the driving member 152 can be connected to the piston rod of the suction cylinder 153, and the driving member 152 is used to drive the piston rod of the suction cylinder 153 to move. The cylinder pipe joint 1531 is connected to the cylinder body of the suction cylinder 153. During the movement of the piston rod, the air pressure in the cylinder body is changed, thereby realizing quantitative suction of the auxiliary solution at the liquid inlet end 111. The piston rod reciprocates to deliver the sucked auxiliary solution to the liquid outlet end 112.

[0044] Further, the driving member 152 includes a driving cylinder 154, the piston rod of the driving cylinder 154 is provided with a connecting block 155, and the connecting block 155 is connected to the piston rod of the suction cylinder 153, so that the piston rod of the driving cylinder 154 and the piston rod of the suction cylinder 153 move synchronously, and the frame 151 is provided with a solenoid valve 156, and the solenoid valve 156 is connected to the driving cylinder 154, and the driving cylinder 154 is configured to drive the piston rod of the suction cylinder 153 to reciprocate under the control of the solenoid valve 156. Specifically, the cylinder body of the driving cylinder 154 is fixed on the top mounting plate, and the piston rod of the driving cylinder 154 is connected to the piston rod of the suction cylinder 153 downward through the connecting block 155, so that the two cylinders can move synchronously, and the controllability is better. In addition, by providing the connecting block 155, the connecting block 155 can realize the disassembly and assembly of the two piston rods, which is convenient for the replacement or maintenance of the two cylinders. Of course, in other preferred embodiments of the present invention, the driving member 152 may also adopt other driving forms, such as an electric push rod or a hydraulic cylinder, etc., which is not specifically limited here.

[0045] It should be noted that the solenoid valve 156 is arranged on the side of the top mounting plate, and the air pipe joint extends upward, and silencers are arranged on both sides of the air pipe joint, and the solenoid valve 156 is connected to the driving cylinder 154 through the air intake pipe and the exhaust pipe, so as to realize the control of the driving cylinder 154. During actual driving, the solenoid valve 156 indirectly drives the piston rod of the suction cylinder 153 to reciprocate back and forth by controlling the air intake and air exhaust of the driving cylinder 154. When the piston rod of the suction cylinder 153 moves from the minimum stroke to the maximum stroke, a negative pressure environment is formed in the cavity of the suction cylinder 153, and the auxiliary solution is sucked into the cylinder body. When the piston rod of the suction cylinder 153 moves from the maximum stroke position to the minimum stroke position, the suction cylinder 153 can discharge the sucked auxiliary solution.

[0046] In some embodiments, a limiting plate 157 is further provided on the connection block 155, and a limiting hole is provided on the limiting plate 157, and a limiting bolt 158 ​​is installed in the limiting hole, and the limiting bolt 158 ​​is configured to abut against the cylinder end face of the driving cylinder 154 to limit the stroke of the driving cylinder 154. Specifically, the limiting hole is a screw hole, and the limiting bolt 158 ​​is threadedly installed in the limiting hole, and the movement path of the limiting bolt 158 ​​intersects with the cylinder end face of the driving cylinder 154, so by adjusting the limiting bolt 158, the minimum distance between the connection block 155 and the cylinder body of the driving cylinder 154 can be adjusted, thereby adjusting the driving stroke of the driving cylinder 154, and further adjusting the suction volume of the suction cylinder 153.

[0047] It should be noted that in this embodiment, a nut 159 is provided on the limiting bolt 158, and the nut 159 can be tightened and held against the limiting plate 157, so as to achieve the tightening of the limiting bolt 158 ​​and prevent the limiting bolt 158 ​​from loosening.

[0048] See also Figures 4 to 6 In some embodiments, the solution input component 110 includes a two-way connecting block 113 and a three-way pipe head 114, the liquid inlet end 111 and the liquid outlet end 112 are located at both ends of the two-way connecting block 113, and the liquid inlet end 111 is provided with a liquid inlet pipe 115, and the liquid outlet end 112 is provided with a liquid outlet pipe 116, and the liquid outlet pipe 116 is connected to the spraying component 130, and the two-way connecting block 113 is provided with a liquid inlet chamber 1131 and a liquid outlet chamber 1133 separated from each other, the liquid inlet chamber 1131 is connected to the liquid inlet pipe 115, and the liquid outlet chamber 1133 is connected to the liquid outlet pipe 116, the first end of the three-way pipe head 114 is connected to the cylinder pipe joint 1531, and the second end and the third end of the three-way pipe head 114 are respectively connected to the liquid inlet chamber 1131 and the liquid outlet chamber 1133 in one way. Specifically, the first end, the second end and the third end of the three-way pipe head 114 are all provided with corresponding pipes, so that the first end is connected to the cylinder pipe joint 1531, and the second end and the third end are respectively connected to the liquid inlet chamber 1131 and the liquid outlet chamber 1133.

[0049] Furthermore, an intake throttling speed regulating valve 117 and an exhaust throttling speed regulating valve 118 are provided on the two-way connecting block 113. The intake throttling speed regulating valve 117 is provided near the liquid inlet end 111, and the exhaust throttling speed regulating valve 118 is provided near the liquid outlet end 112. The second end of the three-way pipe head 114 is connected to the intake throttling speed regulating valve 117, and the third end of the three-way pipe head 114 is connected to the exhaust throttling speed regulating valve 118. Specifically, the intake throttling speed regulating valve 117 and the exhaust throttling speed regulating valve 118 can adjust the flow rate and achieve the effect of one-way circulation, thereby ensuring the one-way flow of the auxiliary solution.

[0050] See also Figures 6 to 9 In some embodiments, the spray assembly 130 includes a manifold head 131 and a liquid spray head 132. The liquid spray head 132 is provided with a first cavity 133, and a liquid spray slit 134 connected to the first cavity 133 is provided at the bottom end of the liquid spray head 132. One end of the manifold head 131 is connected to the liquid outlet 112, and the other end is provided with at least two manifolds. The multiple manifolds are connected to the liquid spray head 132 and connected to the first cavity 133. Specifically, the manifold head 131 can be a four-way head, the first end of which is connected to the liquid outlet pipe 116, and the second end, the third end and the fourth end are respectively connected to three pipe joints evenly distributed on the liquid spray head 132 to achieve uniform diversion. The liquid spray slit 134 extends along the length direction of the liquid spray head 132, and can evenly spray the auxiliary solution.

[0051] Furthermore, a second cavity 135 is further provided in the liquid spray head 132, the first cavity 133 and the second cavity 135 are sequentially provided in the liquid spray head 132 along the vertical direction, and a guide slit 136 is provided between the first cavity 133 and the second cavity 135, and the liquid spray slit 134 is connected to the second cavity 135. The first cavity 133 can achieve preliminary mixing of the auxiliary solution, and the second cavity 135 can achieve secondary mixing to ensure the uniformity of the auxiliary solution. During actual spraying, the auxiliary solution in the liquid outlet cavity 1133 of the two-way connecting block 113 first passes through the liquid outlet pipe 116 and the diversion pipe head 131 and then flows into the first cavity 133 through three pipe joints. At this time, the auxiliary solution is preliminarily mixed in the first cavity 133, and then flows through the performance guide slit 136 to the second cavity 135 for secondary mixing to ensure the uniformity of the solution in each area of ​​the cavity. Finally, the solution after the secondary mixing is evenly sprayed onto the laser cutting area of ​​the electrode piece through the spray slit 134 again to complete the increase of the surface coating of the laser cutting area of ​​the electrode piece.

[0052] In some embodiments, the liquid spray head 132 includes a liquid spray body 137 and a liquid spray clamping block 138, the liquid spray body 137 and the liquid spray clamping block 138 are detachably connected and spliced ​​to form a first cavity 133 and a second cavity 135, and the guide slit 136 and the liquid spray slit 134 are arranged between the liquid spray body 137 and the liquid spray clamping block 138. Specifically, the liquid spray head 132 adopts a detachable structure, which is easy to maintain, and the width of the guide slit 136 and the liquid spray slit 134 formed is more controllable. A gasket 139 is also provided on the surface of the liquid spray clamping block 138, and the gasket 139 can be joined to the liquid spray slit 134 to ensure that the slit width is uniform.

[0053] It should be noted that in the present embodiment, the width of the liquid spraying slit 134 is extremely small. In the absence of pressurization, the auxiliary solution will not drip from the liquid spraying slit 134. Only when the suction cylinder 153 is pressurized, under the action of pressure, the auxiliary solution will be sprayed out from the liquid spraying slit 134 at a small flow rate, thereby avoiding damage to the electrode when the flow rate is too large.

[0054] The liquid spraying device for the laser cutting auxiliary solution provided in the embodiment of the present invention adopts a fully automated liquid spraying structure, and by evenly spraying the auxiliary solution at the cutting position and then performing laser cutting, the generation of molten beads is significantly reduced, the cutting quality is improved, the heat-affected zone is reduced, and the cutting efficiency is improved. The present invention. Through experimental verification, it is proved that the solution-assisted laser cutting technology can reduce molten beads and spatters by more than 50% before and after use, and the range of the heat-affected zone is reduced from 100μm to 60μm. When spraying the solution, it is sprayed through a spraying slit, which is a contactless spraying, and the solution is sprayed evenly to a specific position to the greatest extent.

[0055] The embodiment of the present invention also provides a laser cutting device, including a laser cutting device and the aforementioned spraying device for the laser cutting auxiliary solution. The spraying device 100 for the laser cutting auxiliary solution includes a solution input component 110, a spraying component 130 and a quantitative control component 150. The solution input component 110 has a liquid inlet end 111 and a liquid outlet end 112. The liquid inlet end 111 is configured to input the auxiliary solution; the spraying component 130 is connected to the liquid outlet end 112, and is used to uniformly spray the auxiliary solution to the laser cutting area of ​​the electrode; the quantitative control component 150 is connected to the solution input component 110, and is selectively connected to the liquid inlet end 111 and the liquid outlet end 112, and is configured to extract a preset volume of auxiliary solution from the liquid inlet end 111 and transport it to the liquid outlet end 112. The laser cutting device is arranged at the downstream side of the spraying component 130 along the electrode transport direction, and is configured to laser cut the laser cutting area on the electrode sprayed with the auxiliary solution.

[0056] It should be noted that the basic structure and cutting principle of the laser cutting device here can refer to the existing laser cutting structure.

[0057] In summary, the spray device 100 for the auxiliary solution for laser cutting and the laser cutting equipment provided in the embodiment of the present invention utilize the liquid inlet end 111 of the solution input component 110 to input the auxiliary solution and temporarily store the auxiliary solution, and then extract a quantitative volume of the auxiliary solution from the liquid inlet end 111 through the quantitative control component 150, and transport it to the liquid outlet end 112, to ensure the reliable quantitative output of the liquid, and then evenly spray the auxiliary solution to the laser cutting area through the spray component 130, thereby ensuring the uniformity of the auxiliary solution spraying and the consistency of the single spraying amount. Compared with the prior art, the spray device 100 for the auxiliary solution for laser cutting provided in the embodiment of the present invention can quantitatively and evenly spray to form a layer of auxiliary solution, which can reduce the deposition of molten beads and spatters during laser cutting, and at the same time reduce the range of the heat-affected zone, thereby avoiding the inconsistency of the cutting effect and greatly improving the stability and uniformity of the cutting.

[0058] 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 liquid spraying device for laser cutting auxiliary solution, characterized in that: include: A solution input component, the solution input component having a liquid inlet end and a liquid outlet end, the liquid inlet end being configured to input an auxiliary solution; A spraying assembly, connected to the liquid outlet, for uniformly spraying the auxiliary solution onto the laser cutting area of ​​the electrode piece; A quantitative control component is connected to the solution input component and selectively communicated with the liquid inlet and the liquid outlet, and is configured to extract a preset volume of the auxiliary solution from the liquid inlet and deliver it to the liquid outlet.

2. The liquid spraying device for laser cutting auxiliary solution according to claim 1, characterized in that: The quantitative control component includes a frame, a driving member and a suction cylinder, wherein the driving member and the suction cylinder are arranged relatively on the frame, and the driving member is connected to the piston rod of the suction cylinder, the cylinder body of the suction cylinder is provided with a cylinder pipe joint, and the cylinder pipe joint is connected to the solution input component and selectively connected to the liquid inlet end and the liquid outlet end, and the driving member is configured to drive the piston rod of the suction cylinder to reciprocate within a preset stroke, so that the suction cylinder extracts a preset volume of the auxiliary solution from the liquid inlet end or transports a preset volume of the auxiliary solution to the liquid outlet end.

3. The liquid spraying device for laser cutting auxiliary solution according to claim 2, characterized in that: The driving member includes a driving cylinder, a piston rod of the driving cylinder is provided with a connecting block, and the connecting block is connected to the piston rod of the suction cylinder so that the piston rod of the driving cylinder and the piston rod of the suction cylinder move synchronously. An electromagnetic valve is provided on the frame, and the electromagnetic valve is connected to the driving cylinder. The driving cylinder is configured to drive the piston rod of the suction cylinder to reciprocate under the control of the electromagnetic valve.

4. The liquid spraying device for laser cutting auxiliary solution according to claim 3, characterized in that: A limit plate is also provided on the connection block, a limit hole is provided on the limit plate, a limit bolt is installed in the limit hole, and the limit bolt is configured to abut against the end surface of the cylinder body of the driving cylinder to limit the stroke of the driving cylinder.

5. The liquid spraying device for laser cutting auxiliary solution according to claim 2, characterized in that: The solution input component includes a two-way connecting block and a three-way pipe head, the liquid inlet end and the liquid outlet end are located at both ends of the two-way connecting block, and the liquid inlet end is provided with a liquid inlet pipe, and the liquid outlet end is provided with a liquid outlet pipe, and the liquid outlet pipe is connected to the spraying component, and the two-way connecting block is provided with a liquid inlet chamber and a liquid outlet chamber separated from each other, the liquid inlet chamber is connected with the liquid inlet pipe, and the liquid outlet chamber is connected with the liquid outlet pipe, the first end of the three-way pipe head is connected to the cylinder pipe joint, and the second end and the third end of the three-way pipe head are respectively connected to the liquid inlet chamber and the liquid outlet chamber in one way.

6. The liquid spraying device for laser cutting auxiliary solution according to claim 5, characterized in that: An intake throttling speed regulating valve and an exhaust throttling speed regulating valve are arranged on the two-way connecting block, the intake throttling speed regulating valve is arranged close to the liquid inlet end, and the exhaust throttling speed regulating valve is arranged close to the liquid outlet end, the second end of the three-way pipe head is connected to the intake throttling speed regulating valve, and the third end of the three-way pipe head is connected to the exhaust throttling speed regulating valve.

7. The liquid spraying device for laser cutting auxiliary solution according to claim 1, characterized in that: The spray assembly includes a diverter pipe head and a liquid spray head, a first cavity is arranged in the liquid spray head, and a liquid spray slit connected to the first cavity is arranged at the bottom end of the liquid spray head, one end of the diverter pipe head is connected to the liquid outlet end, and at least two diverter pipes are arranged at the other end, and multiple diverter pipes are connected to the liquid spray head and connected to the first cavity.

8. The liquid spraying device for laser cutting auxiliary solution according to claim 7, characterized in that: A second cavity is also provided in the liquid spray head. The first cavity and the second cavity are arranged in sequence in the liquid spray head along the vertical direction. A guide slit is provided between the first cavity and the second cavity. The liquid spray slit is connected to the second cavity.

9. The liquid spraying device for laser cutting auxiliary solution according to claim 8, characterized in that: The liquid spray head includes a liquid spray body and a liquid spray clamping block, the liquid spray body and the liquid spray clamping block are detachably connected and spliced ​​to form the first cavity and the second cavity, and the guide slit and the liquid spray slit are arranged between the liquid spray body and the liquid spray clamping block.

10. A laser cutting device, characterized in that: It comprises a laser cutting device and a liquid spraying device for the laser cutting auxiliary solution as described in any one of claims 1 to 9, wherein the laser cutting device is arranged on the downstream side of the spraying assembly along the pole piece conveying direction, and is configured to laser cut the laser cutting area on the pole piece sprayed with the auxiliary solution.

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