Automatic packaging equipment for lithium battery raw materials

Abstract

The utility model discloses a kind of automatic packaging equipment for lithium battery raw material, including nitrogen isolation storehouse, nitrogen isolation storehouse is equipped with sectional conveyor and by sectional conveyor in sequence cascaded front replacement chamber, packaging chamber and rear replacement chamber, automatic bagging device, automatic weighing filling device and automatic bagging mouth device are sequentially equipped in packaging chamber along material conveying direction, the inlet and outlet of front replacement chamber and rear replacement chamber are equipped with automatic isolation door, packaging barrel is replaced by nitrogen after carrying out in front replacement chamber, into packaging chamber, carries out automatic packaging, subsequently air replacement after carrying out in rear replacement chamber, and flows into subsequent process. The utility model forms full-closed nitrogen filling packaging space, successfully isolate lithium battery raw material with high activity, high sensitivity and air environment, maximum degree protects the chemical activity and purity of raw material, avoids the problems such as battery capacity attenuation, cycle life shortening, poor slurry stability caused by material deterioration.

Description

Technical Field

[0001] This utility model relates to the field of automatic packaging equipment technology, and in particular to an automatic packaging equipment for lithium battery raw materials. Background Technology

[0002] When packaging lithium battery raw materials, the packaging drum is usually lined with a packaging bag, and then the material is poured into the packaging and sealed for storage. Traditional automatic packaging equipment cannot effectively isolate the material from the outside air during the packaging process. However, if the main components of lithium battery raw materials, such as lithium hydroxide, lithium carbonate, lithium hexafluorophosphate, and high-nickel cathode materials, are exposed to the air, they will absorb moisture and carbon dioxide, affecting product quality and purity, causing material clumping, reduced activity, and hindering the smooth progress of subsequent processes.

[0003] Chinese invention patent CN 110635104 B discloses an automated production system and method for lithium battery cathode materials, including a batching mechanism, a first sintering mechanism, a crushing mechanism, a second sintering mechanism, and a packaging mechanism. While it mentions that the entire production process is fully enclosed to prevent dust spillage and the introduction of foreign matter such as metal, the specific packaging mechanism is not disclosed. Furthermore, even with enclosed packaging, it is still impossible to completely eliminate moisture and carbon dioxide already present in the air. Therefore, a new automated packaging system needs to be designed to prevent the material from being affected by moisture and carbon dioxide in the air during the packaging process, which could damage the material's performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic packaging device for lithium battery raw materials. This device forms a fully enclosed nitrogen-filled packaging space, successfully isolating highly active and sensitive lithium battery raw materials from the air environment. This maximizes the protection of the chemical activity and purity of the raw materials, and avoids problems such as battery capacity decay, shortened cycle life, and poor slurry stability caused by material deterioration.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] An automatic packaging device for lithium battery raw materials includes a nitrogen isolation chamber. The nitrogen isolation chamber is equipped with a segmented conveyor and a front replacement chamber, a packaging chamber, and a rear replacement chamber connected in series by the segmented conveyor. The packaging chamber is equipped with an automatic bagging device, an automatic weighing and filling device, and an automatic bag-sealing device in sequence along the material conveying direction. The entrance and exit of the front replacement chamber and the rear replacement chamber are equipped with automatic isolation doors. After the packaging barrels are replaced with nitrogen in the front replacement chamber, they enter the packaging chamber for automatic packaging. Subsequently, after being replaced with air in the rear replacement chamber, they flow into the next process.

[0007] Furthermore, the front replacement chamber and the rear replacement chamber have the same structure, including a box body and a ventilation device fixed on the top of the box body. The automatic isolation doors are symmetrically arranged on both sides of the box body to form a sealed space.

[0008] Furthermore, the automatic isolation door includes a lower sealing plate and a door frame fixedly installed on the top of the lower sealing plate. The door frame is symmetrically provided with first cylinders on both sides. The cylinder body of the first cylinder is fixedly connected to the door frame, and the piston rod is vertically upward and connected to a door panel that is movably inserted into the door frame.

[0009] Furthermore, the packaging chamber is equipped with a pair of automatic isolation doors on the conveyor line of the segmented conveyor, thereby dividing the packaging chamber into three independent chambers. The automatic bagging device, the automatic weighing and filling device, and the automatic bag-tying device are respectively located in the three chambers.

[0010] Furthermore, the automatic bagging device includes a bag preparation section, a bag taking section, a bag supporting section, a bag blowing section, and a first and second blocking sections arranged sequentially along the conveying direction on the segmented conveyor. The bag supporting section is suspended between the first blocking section and the bag preparation section and is equipped with a bag supporting assembly that can be moved horizontally and vertically. The bags stored in the bag preparation section are pre-opened one by one by the bag suction section and sent to the bottom of the bag supporting section. The bag supporting assembly then inserts the bags into the packaging barrel that is blocked by the first blocking section below. The bag blowing section is located above the second blocking section and close to the first blocking section, and is used to blow air onto the bags inserted into the packaging barrel.

[0011] Furthermore, the bag preparation unit includes a bracket fixed in the packaging chamber, the bracket being provided with a rotatable bag hanging seat, and the front and back of the bag hanging seat being provided with a bag hanging rod and a liftable bag blocking frame, thereby forming a double-sided bag storage space on the bag hanging seat.

[0012] Furthermore, the side of the bag hanging rod is provided with an arc-shaped bag pressing frame, the top of the bag hanging seat is provided with a connecting seat, the top of the bag pressing frame is rotatably mounted on the connecting seat, and the bottom is provided with a roller, which is always in contact with the bag body in its natural state.

[0013] Furthermore, the bag support assembly includes a bag support base, and a liftable bag support barrel is provided below the bag support base. A plurality of bag support plates that can be translated radially are evenly provided on the outer periphery of the bag support barrel.

[0014] Furthermore, the bag support base is equipped with a drive motor and a lead screw assembly. The lead screw of the lead screw assembly is rotatably installed at the center of the bag support base and is connected to the drive motor for transmission. The lower end is rotatably connected to a second cylinder that is fixedly suspended at the bottom of the bag support base. The piston rod of the second cylinder is set vertically downward and fixedly connected to the bag support barrel. The bag support plate is installed at the bottom of the bag support base through a linear guide rail. A connecting rod is hinged between the moving nut of the lead screw assembly and the bag support plate.

[0015] Furthermore, the automatic weighing and filling device includes an automatic feeding device fixedly suspended above the segmented conveyor, and a weighing device that can be lifted and lowered through the conveyor plane is provided below the automatic feeding device.

[0016] Furthermore, the automatic bag-tying device includes a liftable bag-lifting device and a rotating bag-tying device. The bag-lifting device includes a closing mechanism and a tying mechanism arranged in a cross shape. The closing mechanism includes a pair of closing components that can move closer to or further away from each other. The tying mechanism includes a clamping component and a tying component that can move closer to or further away from each other. The rotating bag-tying device is suspended above the center of the bag-tying space formed by the closing mechanism and the tying mechanism.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) This utility model sets up a nitrogen isolation chamber to form a fully enclosed nitrogen-filled packaging space, so that the lithium battery raw materials are completely isolated from the air environment during the entire packaging process. At the same time, a front replacement chamber is set up at the front end of the packaging so that the air in the packaging barrel can be completely replaced, preventing it from being brought into the packaging chamber at the rear end. A rear replacement chamber is set up at the rear end of the packaging so that the nitrogen gas remaining in the packaging barrel can be replaced. This ensures that the chemical activity and purity of the raw materials are protected to the greatest extent, while ensuring that the nitrogen gas in the packaging barrel will not leak into the environment and harm the health of the operators.

[0019] (2) This utility model uses a ventilation device to draw in the air in the front replacement chamber and fill it with nitrogen, and draw in the nitrogen in the rear replacement chamber and fill it with air, thereby replacing the gas in the box and meeting production needs.

[0020] (3) This utility model uses a cylinder to drive the door panel to move up and down, thereby realizing the opening and closing of the automatic isolation door. It has a simple structure and is easy to control.

[0021] (4) By adding a pair of automatic isolation doors, the automatic bagging device, the automatic weighing and filling device and the automatic bag-tying device are independently set in different chambers, ensuring that there is no cross-contamination between the working areas.

[0022] (5) The automatic bagging device of this utility model achieves automatic bag insertion into the packaging barrel through the cooperation of the bag picking part, the bag supporting part and the bag blowing part. The packaging barrel is lifted from the conveying plane by the lifting weighing device and automatically weighed and filled. After completion, it enters the bag sealing space, where the bag opening is sorted and tightened by the closing mechanism and the bag opening is tightened by the bag screwing device. Then, the bag opening is clamped by the clamping assembly and the bag sealing assembly is tied to complete the automatic packaging. The whole process does not require manual operation and has a high degree of automation.

[0023] (6) The bag preparation part of this utility model is provided with a double-sided bag storage space, which can store more bags and reduce the number of manual bag replenishment times. At the same time, a bag pressing frame is set in the bag storage space on each side. When each bag is taken away, the bag opening will rub against the roller to achieve pre-opening of the bag, which is convenient for subsequent bag opening operations.

[0024] (7) The bag-supporting assembly of this utility model consists of multiple retractable and openable bag-supporting plates that fully open the bag and move it down from the bag-supporting barrel to put the bag into the packaging barrel. The distributed operation improves the success rate of bag-putting. Attached Figure Description

[0025] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the automatic isolation door of this utility model;

[0029] Figure 4 This is a schematic diagram of the bag preparation part of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the bag support part of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the blow-out bag section of this utility model;

[0032] Figure 7 This is a schematic diagram of the automatic bag-tying device of this utility model.

[0033] The labels in the attached diagram are:

[0034] Segmented conveyor 1. Front replacement chamber 2. Packaging chamber 3. Rear replacement chamber 4. Automatic bagging device 5. Bag preparation unit 5-1. Support 5-1-1. Rotary cylinder 5-1-2. Bag hanging seat 5-1-3. Bag hanging rod 5-1-4. Bag blocking frame 5-1-5. Third cylinder 5-1-6. Bag pressing frame 5-1-7. Connecting seat 5-1-8. Roller 5-1-9. Bag picking unit 5-2. Bag supporting unit 5-3. Bag supporting seat 5-3-1. Drive motor 5-3-2. Screw assembly 5-3-3. Second cylinder 5-3-4. Bag supporting barrel 5-3-5. Bag supporting plate 5-3-6. Connecting rod 5-3-7. Bag blowing unit 5-4. Mounting frame 5-4-1. Fourth cylinder 5-4-2. Pressure barrel plate 5-4- 3. Blowing rod 5-4-4, First baffle section 5-5, Second baffle section 5-6, Automatic weighing and filling device 6, Automatic feeding device 6-1, Lifting device 6-2, Weighing device 6-3, Automatic bag tying device 7, Belt lifting device 7-1, Bag lifting device 7-2, Horizontal plate 7-2-1, Vertical plate 7-2-2, First closing cylinder 7-2-3, Closing plate 7-2-4, Bag suction cylinder 7-2-5, Bag suction assembly 7-2-6, Second closing cylinder 7-2-7, Closing frame 7-2-8, Clamping assembly 7-2-9, Closing assembly 7-2-10, Bag twisting device 7-3, Automatic isolation door 8, Lower sealing plate 8-1, Door frame 8-2, First cylinder 8-3, Door panel 8-4. Detailed Implementation

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] (Example 1)

[0037] like Figures 1 to 7The automatic packaging equipment for lithium battery raw materials shown includes a nitrogen isolation chamber. The nitrogen isolation chamber is equipped with a segmented conveyor 1 and a front replacement chamber 2, a packaging chamber 3, and a rear replacement chamber 4 connected in series by the segmented conveyor 1. The packaging chamber 3 is equipped with an automatic bagging device 5, an automatic weighing and filling device 6, and an automatic bag sealing device 7 in sequence along the material conveying direction. By setting up the nitrogen isolation chamber, a fully enclosed nitrogen-filled packaging space is formed, so that the lithium battery raw materials are completely isolated from the air environment during the entire packaging process. Automatic isolation doors 8 are installed at the entrances and exits of both the front replacement chamber 2 and the rear replacement chamber 4. After the packaging drum undergoes nitrogen replacement in the front replacement chamber 2, it enters the packaging chamber 4, ensuring that the air inside the packaging drum is completely replaced and preventing it from being brought into the rear packaging chamber, thus avoiding contamination of the lithium battery raw materials. The packaging drum, along with the materials and bags pre-installed in the packaging chamber, undergo automatic packaging in the packaging chamber. After packaging, the drum undergoes air replacement in the rear replacement chamber 4 before flowing into the next process, ensuring that any residual nitrogen in the packaging drum is replaced. This maximizes the protection of the chemical activity and purity of the lithium battery raw materials while ensuring that the nitrogen in the packaging drum does not leak into the environment and harm the health of the operators.

[0038] Specifically, the front replacement chamber 2 and the rear replacement chamber 4 have the same structure, including a housing and a ventilation device fixed to the top of the housing. The ventilation device consists of an air extraction unit and an air filling unit, which are standard products already available on the market and will not be described in detail here. Automatic isolation doors 8 are symmetrically arranged on both sides of the housing along the conveying direction, forming a sealed space. The air in the front replacement chamber 2 is extracted and nitrogen is filled in through the ventilation device, and vice versa, the nitrogen in the rear replacement chamber 4 is extracted and air is filled in, thus achieving gas replacement.

[0039] A pair of automatic isolation doors 8 are installed on the conveyor line of the segmented conveyor 1 within the packaging chamber 3, dividing the packaging chamber into three independent compartments. An automatic bagging device 5, an automatic weighing and filling device 6, and an automatic bag-sealing device 7 are respectively located within the three compartments, ensuring no cross-contamination between work areas. The automatic isolation door 8 includes a lower sealing plate 8-1 and a door frame 8-2 fixedly mounted on top of the lower sealing plate 8-1. Both serve as the fixing parts of the automatic isolation door 8, sealingly connected to the inner wall of the nitrogen isolation chamber and inserted into the corresponding segment of the segmented conveyor 1. Symmetrically arranged on both sides of the door frame 8-2 are first cylinders 8-3. The cylinder body of the first cylinder 8-3 is fixedly connected to the door frame 8-2, and the piston rod is vertically upward-pointing and connected to a movable door plate 8-4 inserted within the door frame 8-2 via a floating joint. The first cylinder 8-3 drives the door plate 8-2 to move up and down, thereby opening and closing the automatic isolation door 8, achieving communication and isolation between adjacent compartments. The structure is simple and easy to control.

[0040] The automatic bagging device 5 includes a bag preparation section 5-1, a bag taking section 5-2, a bag supporting section 5-3, a bag blowing section 5-4, and a first stop section 5-5 and a second stop section 5-6 arranged sequentially along the conveying direction on the segmented conveyor 1. The bag supporting section 5-3 is suspended between the first stop section 5-5 and the bag preparation section 5-1. The bag blowing section 5-4 is located above the second stop section 5-6, near the first stop section 5-5. The packaging barrel is conveyed by the segmented conveyor 1 and stops below the bag supporting section 5-3 due to the obstruction of the first stop section 5-5. The bag taking section 5-2 pre-opens the bags stored in the bag preparation section 5-1 one by one and sends them to the bottom of the bag supporting section 5-3. The bag supporting section 5-3 fully opens the bags and automatically puts them into the packaging barrel below. As the segmented conveyor 1 continues to move to the second stop section 5-6, the bag blowing section 5-4 blows air into the bags from above, making them fully open and fit against the barrel wall.

[0041] Specifically, the bag preparation unit 5-1 includes a bracket 5-1-1 fixedly installed inside the packaging chamber. A rotary cylinder 5-1-2 is fixedly mounted on the bracket 5-1-1 via a frame. The output end of the rotary cylinder 5-1-2 is connected to a bag hanging seat 5-1-3, enabling the bag hanging seat 5-1-3 to be rotatably set. The bag hanging seat 5-1-3 is provided with a bag hanging rod 5-1-4 and a bag blocking frame 5-1-5 on both the front and back. The bag hanging rod 5-1-4 is set horizontally, and the bag blocking frame 5-1-5 is set vertically, forming an intersection with the bag hanging rod 5-1-4, thereby forming a double-sided bag storage space on the bag hanging seat 5-1-3, which can store more bags at once. A third cylinder 5-1-6 is fixedly mounted on the top of the bracket 5-1-1. The top of the bag-blocking frame 5-1-5 is connected to the piston rod of the third cylinder 5-1-6. The bag has pre-drilled holes and is hung on the bag-hanging rod 5-1-4. The bag-blocking frame 5-1-5 is driven to rise and fall by the third cylinder 5-1-6, moving upwards when the bag is removed to ensure proper bag retrieval. Each bag-hanging rod 5-1-4 has an arc-shaped bag-pressing frame 5-1-7 on its side. The top of the bag-hanging seat 5-1-3 has a connecting seat 5-1-8. The top of the bag-pressing frame 5-1-7 is rotatably mounted on the connecting seat 5-1-8, and the bottom has a rotatable roller 5-1-9. Under gravity, the roller 5-1-9 is always in contact with the bag in its natural state. As each bag is removed, the bag opening rubs against the roller 5-1-9, achieving pre-opening of the bag for subsequent bag-opening operations.

[0042] The bag-taking unit 5-2 is installed on the inner wall of the packaging chamber 3 via a linear module, enabling it to move horizontally along the conveying direction. It uses a vacuum nozzle to adsorb the bag, which is a very common existing technology and will not be described in detail here.

[0043] The bag-supporting assembly 5-3 is suspended from the top of the packaging chamber 3 via a set of cross-shaped module slides, enabling horizontal and vertical movement. It includes a bag-supporting base 5-3-1, on which is mounted a drive motor 5-3-2 and a lead screw assembly 5-3-3. The lead screw of the lead screw assembly 5-3-3 is rotatably mounted at the center of the bag-supporting base 5-3-1 via bearings. Its upper end is connected to the drive motor 5-3-2 via a transmission assembly consisting of a belt and pulleys. Its lower end is rotatably connected via bearings to a second cylinder 5-3-4 fixedly suspended at the bottom of the bag-supporting base 5-3-1. The piston rod of the second cylinder 5-3-4 is vertically downward and fixedly connected to a bag-supporting barrel 5-3-5. Four sets of bag-supporting plates 5-3-6 are evenly distributed around the outer periphery of the bag-supporting barrel 5-3-5. The bag-supporting plates 5-3-6 are mounted at the bottom of the bag-supporting base 5-3-1 via linear guides, each linear guide extending radially along the bag-supporting barrel 5-3-5. A connecting rod 5-3-7 is hinged between the movable nut of the lead screw assembly 5-3-3 and the bag-supporting plate 5-3-6, forming a support frame similar to umbrella ribs. The lead screw is rotated by the drive motor 5-3-2, causing the movable nut to rise and fall. This, in turn, moves the bag-supporting plate 5-3-6 closer to or further away from the bag-supporting barrel 5-3-5 via the connecting rod, thus achieving the bag-supporting action. Once the bag is fully open, the bag-removing part 5-2 separates from the bag body, and the bag-supporting plate 5-3-6 holds the bag in place. Then, the bag-supporting barrel 5-3-5 descends, placing the bag into the packaging barrel below.

[0044] The packaging drum containing the bag continues to be conveyed and stops at the second drum section 5-6. The bag blowing section 5-4 includes a fixed mounting frame 5-4-1. A fourth cylinder 5-4-2 is mounted on the mounting frame 5-4-1. The piston rod of the fourth cylinder is set vertically downward and connected to a pressure plate 5-4-3 through a floating joint. Blowing rods 5-4-4 are arranged parallel to each other on both sides, penetrating the pressure plate 5-4-3. Linear bearings fixed on the mounting frame 5-4-1 are fitted on the blowing rods 5-4-4, which, while realizing the bag blowing function, also serve as guide rods.

[0045] The automatic weighing and filling device 6 includes an automatic feeding device 6-1 fixedly suspended above the segmented conveyor 1. Below the automatic feeding device 6-1 is a lifting device 6-2, and at the output end of the lifting device 6-2 is a weighing device 6-3. Initially, the weighing platform of the weighing device 6-3 is slightly lower than the conveying plane. When the packaging drum moves to the weighing platform, the weighing device 6-3 rises, carrying the packaging drum away from the conveying plane and delivering it to the feeding port of the automatic feeding device 6-1, where it is then weighed and filled. After filling, the weighing device 6-3 descends, returning the packaging drum containing the material to the conveying plane, and continues moving to the automatic bag-tying device for radial strapping.

[0046] The automatic bag-tying device 7 includes a belt lifting device 7-1 and a module slide. The output end of the belt lifting device 7-1 is equipped with a bag-lifting device 7-2. The module slide is vertically arranged, and its output end is connected to a bag-spinning device 7-3, enabling the bag-lifting device 7-2 and the bag-spinning device 7-3 to be raised and lowered. The bag-lifting device 7-2 includes a rectangular frame structure composed of a pair of horizontal plates 7-2-1 and a pair of vertical plates 7-2-2. A first closing cylinder 7-2-3 is symmetrically fixed on the front and rear sides of the frame. The piston rod of the first closing cylinder 7-2-3 is connected to a closing plate 7-2-4. Above the first closing cylinder 7-2-3 is a suction cylinder 7-2-5 fixed on the frame. The piston rod of the suction cylinder 7-2-5 is connected to a suction assembly 7-2-6 composed of a suction plate and suction tubes symmetrically arranged on both sides of the suction plate. The suction assembly 7-2-6 and the closing plate 7-2-4 form a closing assembly. The frame is symmetrically equipped with second closing cylinders 7-2-7 on both sides. The piston rod of the second closing cylinder 7-2-7 is connected to a closing frame 7-2-8 that is slidably mounted on the inner side of the horizontal plate 7-2-1 via a linear guide rail. The two closing frames 7-2-8 are respectively equipped with a clamping assembly 7-2-9 and a sealing assembly 7-2-10, forming a sealing mechanism. The bag-sealing device 7-3 is suspended above the center of the bag-sealing space formed by the closing mechanism and the sealing mechanism. Below the automatic bag-sealing device 7 is a third baffle. The packaging barrel is blocked below the automatic bag-sealing device 7 by the third baffle. The closing mechanism sorts and tightens the bag opening, and the bag-sealing device 7-3 tightens the bag opening. Then, the clamping assembly 7-2-9 clamps the bag opening, and the sealing assembly 7-2-10 seals the bag opening, completing the automatic packaging. The entire process requires no manual operation and has a high degree of automation. After packaging, it is transported to the post-replacement chamber 4 for gas replacement, and then leaves the nitrogen isolation chamber to enter the next process.

[0047] This embodiment utilizes a nitrogen isolation chamber to create a fully enclosed nitrogen-filled packaging space, ensuring complete isolation between the lithium battery raw materials and the air environment throughout the packaging process. A front-displacement chamber at the front of the packaging allows for complete air replacement within the packaging drum, preventing it from being carried into the rear packaging chamber. A rear-displacement chamber at the rear of the packaging allows for the replacement of any residual nitrogen in the drum. This maximizes the protection of the chemical activity and purity of the raw materials while ensuring that nitrogen from the packaging drum does not leak into the environment and harm the health of operators. The entire packaging process is fully automated, requiring no manual operation. A double-sided bag storage area reduces the number of manual bag loading operations, further improving safety.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic packaging device for lithium battery raw materials, characterized in that: The system includes a nitrogen isolation chamber, which contains a segmented conveyor and a front replacement chamber, a packaging chamber, and a rear replacement chamber connected in series by the segmented conveyor. The packaging chamber is equipped with an automatic bagging device, an automatic weighing and filling device, and an automatic bag-sealing device in sequence along the material conveying direction. The entrances and exits of the front and rear replacement chambers are equipped with automatic isolation doors. After the packaging drums undergo nitrogen replacement in the front replacement chamber, they enter the packaging chamber for automatic packaging. Subsequently, after air replacement in the rear replacement chamber, they flow into the next process.

2. The automatic packaging apparatus for lithium battery raw materials according to claim 1, characterized in that: The front and rear replacement chambers have the same structure, including a box and a ventilation device fixed on the top of the box. The automatic isolation doors are symmetrically arranged on both sides of the box to form a sealed space.

3. The automatic packaging apparatus for lithium battery raw materials according to claim 1, characterized in that: The automatic isolation door includes a lower sealing plate and a door frame fixedly installed on the top of the lower sealing plate. The door frame is symmetrically provided with first cylinders on both sides. The cylinder body of the first cylinder is fixedly connected to the door frame, and the piston rod is vertically upward and connected to a door panel that is movably inserted into the door frame.

4. The automatic packaging equipment for lithium battery raw materials according to claim 1, characterized in that: The packaging chamber is located on the conveyor line of the segmented conveyor and is equipped with a pair of automatic isolation doors, which divide the packaging chamber into three independent chambers. The automatic bagging device, the automatic weighing and filling device, and the automatic bag-tying device are respectively located in the three chambers.

5. The automatic packaging apparatus for lithium battery raw materials according to claim 4, characterized in that: The automatic bagging device includes a bag preparation section, a bag taking section, a bag supporting section, a bag blowing section, and a first and second blocking sections arranged sequentially along the conveying direction on a segmented conveyor. The bag supporting section is suspended between the first blocking section and the bag preparation section and is equipped with a bag supporting assembly that can be moved horizontally and vertically. The bags stored in the bag preparation section are pre-opened one by one by the bag suction section and sent to the bottom of the bag supporting section. The bag supporting assembly then inserts the bags into the packaging barrel that is blocked by the first blocking section below. The bag blowing section is located above the second blocking section and close to the first blocking section, and is used to blow air onto the bags inserted into the packaging barrel.

6. The automatic packaging apparatus for lithium battery raw materials according to claim 5, characterized in that: The bag preparation unit includes a bracket fixed in the packaging chamber. The bracket is equipped with a rotatable bag hanging seat. The front and back of the bag hanging seat are equipped with a bag hanging rod and a liftable bag retainer, thereby forming a double-sided bag storage space on the bag hanging seat.

7. An automatic packaging equipment for lithium battery raw materials according to claim 6, characterized in that: The side of the bag hanging rod is provided with an arc-shaped bag pressing frame, the top of the bag hanging seat is provided with a connecting seat, the top of the bag pressing frame is rotatably mounted on the connecting seat, and the bottom is provided with a roller, which is always in contact with the bag body in its natural state.

8. The automatic packaging apparatus for lithium battery raw materials according to claim 5, characterized in that: The bag support assembly includes a bag support base, and a liftable bag support barrel is provided below the bag support base. Multiple bag support plates that can be translated radially are evenly provided on the outer periphery of the bag support barrel.

9. The automatic packaging apparatus for lithium battery raw materials according to claim 4, characterized in that: The automatic weighing and filling device includes an automatic feeding device that is fixedly suspended above the segmented conveyor, and a weighing device that can be lifted and penetrates the conveyor plane is provided below the automatic feeding device.

10. The automatic packaging apparatus for lithium battery raw materials according to claim 4, characterized in that: The automatic bag-tying device includes a liftable bag-lifting device and a rotating bag-tying device. The bag-lifting device includes a closing mechanism and a tying mechanism arranged in a cross shape. The closing mechanism includes a pair of closing components that can move closer to or further away from each other. The tying mechanism includes a clamping component and a tying component that can move closer to or further away from each other. The rotating bag-tying device is suspended above the center of the bag-tying space formed by the closing mechanism and the tying mechanism.

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