Automatic humidifying mechanism for pole piece coating

Abstract

The utility model discloses an automatic humidifying mechanism for a pole piece coating, which comprises a bracket, a humidifying device and a control device, wherein the bracket is positioned above a pole piece; the water inlet assembly is used for providing liquid; the gas inlet assembly is used for providing compressed gas; the spraying assembly is used for spraying atomized water to a pole piece and comprises a fixing frame, a nozzle body and an atomization adjusting module, the nozzle body is installed on the fixing frame, a mixing channel is formed in the nozzle body, one end of the mixing channel penetrates through one end of the nozzle body to form an atomization opening, and the atomization adjusting module is installed on the fixing frame; a water inlet and an air inlet are formed in the outer side of the nozzle body, the water inlet assembly is communicated with the water inlet, the air inlet assembly is communicated with the air inlet, and the atomization adjusting module is used for adjusting the spraying range and shape of atomized water; and the transverse moving assembly is used for driving the spraying assembly to move in the transverse direction. According to the utility model, the edges of the tabs can be automatically humidified, so that the tabs are prevented from cracking in the subsequent tape conveying process, and the coating quality of pole pieces is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coating equipment technical field, concretely relates to a kind of pole piece coating automatic humidifying mechanism. BACKGROUND

[0002] In the process of lithium battery pole piece coating, slurry is coated on the surface of pole piece to form coating, since slurry contains moisture and organic solvent, therefore, pole piece needs to enter oven for baking after coating to remove certain moisture and organic solvent.

[0003] However, the coating of the edge of tab on pole piece is too thin after wet coating is baked in oven, which leads to over-drying and cracking, peeling and other defects in subsequent belt running, seriously affecting the coating quality of pole piece. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a kind of pole piece coating automatic humidifying mechanism, can realize the edge of tab is humidified automatically, avoid tab to appear cracking in subsequent belt running process, improve the coating quality of pole piece.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A kind of pole piece coating automatic humidifying mechanism, comprising:

[0007] Support, above pole piece;

[0008] Water inlet assembly for providing liquid;

[0009] Air inlet assembly for providing compressed gas;

[0010] Spray assembly for spraying atomized water on pole piece, including fixed frame and nozzle body, the fixed frame is movably connected to the support, the nozzle body is installed on the fixed frame, the nozzle body is provided with mixing channel inside, one end of the mixing channel penetrates one end of the nozzle body to form atomizing port, the outside of the nozzle body is provided with water inlet and air inlet, the water inlet and the air inlet are communicated with the mixing channel, the water inlet assembly is communicated with the water inlet, the air inlet assembly is communicated with the air inlet;

[0011] The transverse moving assembly is arranged on the support and used for driving the spraying assembly to move in the transverse direction, which comprises a motor, a screw rod, a screw nut, a screw nut base, a moving plate and two support bases, the two support bases are arranged on the support, the two ends of the screw rod are rotatably connected to the two support bases respectively, the screw rod is arranged in the transverse direction, the screw nut is threadedly connected to the screw rod, the screw nut is fixed on the screw nut base, the screw nut base is connected to the moving plate, the spraying assembly is arranged on the moving plate, and the motor is used for driving the screw rod to rotate.

[0012] As a further improvement of the above technical solution, the spraying assembly further comprises an atomization adjusting module, the atomization adjusting module is used for adjusting the spraying range and shape of the atomized water, the atomization adjusting module comprises a steel needle and an adjusting nut, the end of the nozzle body away from the atomization port is provided with an external thread, the adjusting nut is screwed with the external thread, the steel needle is inserted into the mixing channel from the end of the nozzle body away from the atomization port, a gap is formed between the steel needle and the mixing channel, one end of the steel needle is connected with the adjusting nut, and the other end of the steel needle is a conical part.

[0013] As a further improvement of the above technical solution, the atomization adjusting module further comprises a spring, the spring is sleeved on the steel needle, the end of the steel needle away from the conical part is provided with a boss, one end of the spring is abutted against the boss, and the other end of the spring is abutted against the end of the nozzle body away from the atomization port.

[0014] As a further improvement of the above technical solution, the screw rod has a positive tooth section and a reverse tooth section, two screw nuts are connected to the screw rod, one screw nut is threadedly connected to the positive tooth section, the other screw nut is threadedly connected to the reverse tooth section, the two screw nuts are arranged in the center symmetry of the screw rod, two spraying assemblies are connected to each transverse moving assembly, and the two screw nuts are connected to the two spraying assemblies respectively.

[0015] As a further improvement of the above technical solution, the number of the transverse moving assemblies is multiple, and the multiple transverse moving assemblies are arranged in sequence in the longitudinal direction.

[0016] As a further improvement of the above technical solution, the motors of the two adjacent transverse moving assemblies are arranged on the two sides of the support respectively.

[0017] As a further improvement of the above technical solution, a guide rod is arranged on the support, the length direction of the guide rod extends in the transverse direction, a plurality of the moving plates are slidingly arranged on a single guide rod, and a linear bearing is arranged on one side of the moving plate and sleeved on the guide rod.

[0018] As a further improvement of the above technical solution, a manual adjustment sliding table is arranged between the fixed frame and the moving plate, and is used for adjusting the longitudinal position of the fixed frame.

[0019] As a further improvement of the above technical solution, the water inlet assembly comprises a water tank and a plurality of water pipes, and the bottom of the water tank is provided with a plurality of one-way valves, each one-way valve and each water inlet are connected by the water pipe.

[0020] As a further improvement of the above technical solution, the air inlet assembly comprises an air source, an air pipe and a control valve group, the air source and the control valve group are connected by the air pipe, and the control valve group and the air inlet are connected by the air pipe.

[0021] The utility model discloses a kind of automatic humidifying mechanisms of pole piece coating, by setting horizontal movement subassembly and spray subassembly, horizontal movement subassembly drives spray subassembly to move to the edge position of pole lug along transverse direction, water inlet subassembly transports liquid to water inlet, air inlet subassembly transports compressed gas to air inlet, so that liquid and compressed gas form water-air mixture in mixing passage, water-air mixture is sprayed to the edge position of pole lug by atomizing port, and the spray range and shape of atomized water are adjusted by atomization adjustment module, to realize automatically humidifying the edge of pole lug, avoid pole lug to crack in subsequent running process, improve the coating quality of pole piece. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model is further described below in connection with drawings and examples.

[0023] Figure 1 It is the structure schematic view provided by an example of the utility model;

[0024] Figure 2 It is Figure 1 Partial structure schematic view of;

[0025] Figure 3 It is Figure 2 Structure schematic view of spray subassembly in;

[0026] Figure 4 It is Figure 3 Sectional view of;

[0027] Reference numerals: 100-Bracket, 200-Spray assembly, 210-Fixed bracket, 220-Nozzle body, 221-Atomizing port, 222-Water inlet, 223-Air inlet, 230-Atomizing adjustment module, 231-Steel needle, 232-Adjusting nut, 233-Spring, 234-Boss, 240-Manual adjustment slide, 300-Horizontal movement assembly, 310-Motor, 320-Lead screw, 330-Lead screw nut, 340-Nut seat, 350-Moving plate, 360-Support base, 410-Guide rod, 420-Linear bearing, 510-Water tank, 520-One-way valve, 610-Control valve assembly. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1 to 4 An example of this utility model provides an automatic humidification mechanism for electrode coating, including a bracket 100, a water inlet assembly, an air inlet assembly, a spray assembly 200, and a transverse movement assembly 300.

[0030] Positionally, the bracket 100 is located above the electrode, the spray assembly 200 is movably connected to the bracket 100, and the transverse assembly 300 is disposed on the bracket 100.

[0031] Specifically, the width direction of the electrode is defined as the horizontal direction, and the direction perpendicular to the width direction of the electrode is defined as the vertical direction. The aforementioned horizontal movement component 300 is used to drive the spray component 200 to move horizontally.

[0032] Structurally, the spray assembly 200 includes a mounting bracket 210, a nozzle body 220, and an atomization adjustment module 230. The nozzle body 220 is mounted on the mounting bracket 210. A mixing channel is provided inside the nozzle body 220, with one end of the mixing channel penetrating one end of the nozzle body 220 to form an atomization port 221. A water inlet 222 and an air inlet 223 are provided on the outside of the nozzle body 220. Both the water inlet 222 and the air inlet 223 are connected to the mixing channel. The water inlet assembly is connected to the water inlet 222, and the air inlet assembly is connected to the air inlet 223. The water inlet assembly is used to provide liquid, and the air inlet assembly is used to provide compressed gas. The atomization adjustment module 230 is used to adjust the spray range and shape of the atomized water.

[0033] During coating, the transverse component 300 drives the spray component 200 to move laterally to the edge of the tab. The water inlet component delivers liquid to the water inlet 222, and the air inlet component delivers compressed gas to the air inlet 223, so that the liquid and compressed gas form a water-air mixture in the mixing channel. The water-air mixture is sprayed to the edge of the tab through the atomizing port 221, and the spray range and shape of the atomized water are adjusted by the atomization adjustment module 230. Thus, the edge of the tab can be automatically humidified to avoid cracking of the tab during subsequent conveying and improve the coating quality of the electrode.

[0034] In some preferred embodiments, the atomization adjustment module 230 includes a steel needle 231 and an adjustment nut 232. The nozzle body 220 has an external thread at one end away from the atomization port 221. The adjustment nut 232 is screwed into the external thread. The steel needle 231 is inserted into the mixing channel from the end of the nozzle body 220 away from the atomization port 221, forming a gap between the steel needle 231 and the mixing channel. One end of the steel needle 231 is connected to the adjustment nut 232, and the other end of the steel needle 231 is a conical part. The mixing channel has a conical section near the atomization port 221. By turning the adjustment nut 232, the position of the steel needle 231 in the length direction can be adjusted, so that the conical part of the steel needle 231 is closer to or further away from the atomization port 221, thereby adjusting the gap between the conical part of the steel needle 231 and the atomization port 221. Thus, the spray range and shape of the atomized water can be adjusted.

[0035] Furthermore, the atomization adjustment module 230 also includes a spring 233, which is sleeved on the steel needle 231. A boss 234 is provided at the end of the steel needle 231 away from the conical portion. One end of the spring 233 abuts against the boss 234, and the other end of the spring 233 abuts against the end of the nozzle body 220 away from the atomization port 221. When the adjusting nut 232 is tightened, the adjusting nut 232 moves the steel needle 231 towards the end of the atomization port 221. At this time, the spring 233 is compressed, and the elastic force of the spring 233 acts on the boss. On 234, the steel needle 231 is always pressed tightly against the adjusting nut 232, which facilitates the assembly of the spray assembly 200. Moreover, since there is a certain gap between the internal and external threads when the adjusting nut 232 is connected to the external thread, the spring 233 is compressed after the adjusting nut 232 is tightened, so that the adjusting nut 232 is subjected to the elastic force of the spring 233, which is equivalent to providing additional locking force. Thus, it can prevent the adjusting nut 232 from loosening and ensure that the spray range and shape of the atomized water sprayed from the atomizing port 221 remain constant.

[0036] In some preferred embodiments, the transverse assembly 300 includes a motor 310, a lead screw 320, a lead screw nut 330, a nut seat 340, a moving plate 350, and two support seats 360. The two support seats 360 are mounted on the bracket 100. The two ends of the lead screw 320 are rotatably connected to the two support seats 360 respectively. The lead screw 320 is arranged laterally. The lead screw nut 330 is threadedly connected to the lead screw 320 and fixed on the nut seat 340. The nut seat 340 is connected to the moving plate 350. The spray assembly 200 is disposed on the moving plate 350. The motor 310 is used to drive the lead screw 320 to rotate.

[0037] It is understandable that by driving the lead screw 320 to rotate through the motor 310, the lead screw 320 drives the lead screw nut 330, nut seat 340 and moving plate 350 to move laterally, thereby driving the spray assembly 200 to move as a whole, thus improving the positioning accuracy of the spray assembly 200 and the stability of the spray assembly 200 when moving laterally.

[0038] Furthermore, the lead screw 320 has a positive thread section and a negative thread section, and two lead screw nuts 330 are connected to the lead screw 320. One lead screw nut 330 is threaded to the positive thread section, and the other lead screw nut 330 is threaded to the negative thread section. The two lead screw nuts 330 are symmetrically arranged around the center of the lead screw 320. Each transverse component 300 is connected to two spray components 200, and the two lead screw nuts 330 are respectively connected to the two spray components 200.

[0039] Understandably, when the motor 310 drives the lead screw 320 to rotate, the lead screw 320 drives the two lead screw nuts 330 to move closer or further away from each other simultaneously. This enables one motor 310 to drive two spray components 200 to move closer or further away from each other simultaneously, thereby reducing the manufacturing cost of the equipment. Moreover, it can also ensure the accuracy of the two spray components 200 being located at the edges of the tabs on both sides.

[0040] Furthermore, there are multiple transverse moving components 300, which are arranged sequentially along the longitudinal direction, and each spraying component 200 is arranged sequentially along the transverse direction. In the coating process where there are multiple tabs on some electrode sheets, the multiple spraying components 200 can automatically move to the corresponding tab edge position, thereby satisfying the humidification of multiple tab edge positions and improving work efficiency.

[0041] Furthermore, the motors 310 of the two adjacent transverse components 300 are respectively arranged on both sides of the bracket 100, which can make the overall structure more compact.

[0042] In some preferred embodiments, a guide rod 410 is provided on the bracket 100, and the guide rod 410 extends laterally along its length direction. A linear bearing 420 is provided on one side of the movable plate 350, and the linear bearing 420 is sleeved on the guide rod 410. When the movable plate 350 moves laterally, the movable plate 350 drives the linear bearing 420 to move along the length direction of the guide rod 410. The guide rod 410 can guide the movable plate 350, thereby ensuring the stability of the spray assembly 200 when it moves laterally. Moreover, the linear bearing 420 can reduce the wear of the guide rod 410 and improve the service life of the guide rod 410.

[0043] A manual adjustment slide 240 is provided between the fixed frame 210 and the movable plate 350. The manual adjustment slide 240 is used to adjust the longitudinal position of the fixed frame 210, thereby facilitating the adjustment of the distance between the spray nozzle and the electrode tab, and thus enabling the adjustment of the spray range of the atomized water.

[0044] In some preferred embodiments, the water inlet assembly includes a water tank 510 and several water pipes (not shown in the attached drawings). Several one-way valves 520 are provided at the bottom of the water tank 510. Each one-way valve 520 is connected to each water inlet 222 through a water pipe. The water tank 510 is filled with purified water. On the one hand, the one-way valves 520 can prevent liquid backflow. On the other hand, each one-way valve 520 can control the water intake of the corresponding spray assembly 200, ensuring that the spray assemblies 200 do not affect each other. This allows for precise control of the water spray volume of each spray assembly 200, ensuring the humidification effect at the edge of the tab.

[0045] Furthermore, the water tank 510 is provided with two interfaces and a transparent tube on its side. The two ends of the transparent tube are connected to the two interfaces respectively. The transparent tube is set vertically and is connected to the inside of the water tank 510. The real-time water level in the water tank 510 can be observed through the transparent tube. When the water level is low, the operator can add water to the water tank 510.

[0046] In some preferred embodiments, the air intake assembly includes an air source (not shown in the figures), an air pipe (not shown in the figures), and a control valve group 610. The air source can be an air compressor. The air source and the control valve group 610 are connected via an air pipe. The control valve group 610 is connected to the air inlet 223 via an air pipe. Specifically, the control valve group 610 includes a solenoid valve, a pressure regulating valve, and a pneumatic triplet. The solenoid valve can control the spray volume and spray frequency of the spray assembly 200. The pressure regulating valve can adjust the air intake pressure. It is understood that if the air intake pressure is too high, it will lead to liquid waste and uneven spraying. If the air intake pressure is too low, it will lead to the inability to form an effective spray. Therefore, the pressure regulating valve can ensure a constant air intake pressure and ensure consistent spraying effect.

[0047] Specifically, a pneumatic triplet refers to a combination of three air source processing components: an air filter, a pressure reducing valve, and an oil mist lubricator. The air filter removes water vapor, oil vapor, and dust impurities from the compressed air, ensuring the gas entering the sprayer is pure and preventing damage from impurities. The pressure reducing valve adjusts the pressure drop of the compressed gas, bringing the higher pressure down to the specified output pressure and ensuring stable output pressure, preventing damage to the spray assembly 200 or affecting the spraying effect due to excessive compressed gas pressure. The oil mist lubricator mixes oil mist with the compressed air, using the flowing compressed air to draw and mix the lubricating oil from the oil mist cup, spraying it as a mist that is then delivered into the pneumatic piping system to lubricate the pneumatic components and extend their service life.

[0048] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An automatic humidification mechanism for electrode coatings, characterized in that, include: The support is located above the electrode. Water inlet assembly, used to supply liquid; The intake assembly is used to supply compressed gas; A spray assembly for spraying atomized water onto an electrode plate includes a mounting bracket and a nozzle body. The mounting bracket is movably connected to the support frame, and the nozzle body is mounted on the mounting bracket. A mixing channel is provided inside the nozzle body, with one end of the mixing channel penetrating one end of the nozzle body to form an atomization port. A water inlet and an air inlet are provided on the outside of the nozzle body, both of which are connected to the mixing channel. A water inlet assembly is connected to the water inlet, and an air inlet assembly is connected to the air inlet. A lateral movement assembly, mounted on the bracket, is used to drive the spray assembly to move laterally. It includes a motor, a lead screw, a lead screw nut, a nut seat, a moving plate, and two support seats. The two support seats are mounted on the bracket. Both ends of the lead screw are rotatably connected to the two support seats. The lead screw is arranged laterally. The lead screw nut is threaded to the lead screw and fixed to the lead screw nut seat, which is connected to the moving plate. The spray assembly is mounted on the moving plate. The motor drives the lead screw to rotate.

2. The automatic humidification mechanism for electrode coating according to claim 1, characterized in that, The spray assembly further includes an atomization adjustment module for adjusting the spray range and shape of the atomized water. The atomization adjustment module includes a steel needle and an adjustment nut. The nozzle body has an external thread at one end away from the atomization port. The adjustment nut is screwed into the external thread. The steel needle is inserted into the mixing channel from the end of the nozzle body away from the atomization port, forming a gap between the steel needle and the mixing channel. One end of the steel needle is connected to the adjustment nut, and the other end of the steel needle is a conical portion. The mixing channel has a conical section near the atomization port.

3. The automatic humidification mechanism for electrode coating according to claim 2, characterized in that, The atomization adjustment module also includes a spring, which is sleeved on the steel needle. A boss is provided at the end of the steel needle away from the conical part. One end of the spring abuts against the boss, and the other end of the spring abuts against the end of the nozzle body away from the atomization port.

4. The automatic humidification mechanism for electrode coating according to claim 1, characterized in that, The lead screw has a positive thread section and a negative thread section. Two lead screw nuts are connected to the lead screw. One lead screw nut is threaded to the positive thread section, and the other lead screw nut is threaded to the negative thread section. The two lead screw nuts are symmetrically arranged along the center of the lead screw. Each lateral movement component is connected to two spray components, and the two lead screw nuts are respectively connected to the two spray components.

5. The automatic humidification mechanism for electrode coating according to claim 4, characterized in that, The number of the transverse moving components is multiple, and the multiple transverse moving components are arranged sequentially along the longitudinal direction, while each spraying component is arranged sequentially along the transverse direction.

6. The automatic humidification mechanism for electrode coating according to claim 5, characterized in that, The motors of the two adjacent transverse components are respectively located on both sides of the bracket.

7. The automatic humidification mechanism for electrode coating according to claim 5, characterized in that, The bracket is provided with a guide rod, which extends laterally along its length. Multiple movable plates are slidably mounted on a single guide rod. A linear bearing is provided on one side of each movable plate and is sleeved on the guide rod.

8. The automatic humidification mechanism for electrode coating according to claim 1, characterized in that, A manually adjustable slide is provided between the fixed frame and the movable plate, and the manually adjustable slide is used to adjust the longitudinal position of the fixed frame.

9. The automatic humidification mechanism for electrode coating according to claim 1, characterized in that, The water inlet assembly includes a water tank and several water pipes. Several one-way valves are provided at the bottom of the water tank, and each one-way valve is connected to each water inlet through the water pipe.

10. An automatic humidification mechanism for electrode coatings according to claim 1, characterized in that, The air intake assembly includes an air source, an air pipe, and a control valve group. The air source and the control valve group are connected through the air pipe, and the control valve group is connected to the air inlet through the air pipe.

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