Negative pole piece weighing machine

Abstract

The utility model discloses a negative pole piece weighing machine which comprises an operation cabinet, a feeding mechanism, a weighing mechanism, a carrying mechanism and a discharging mechanism, the feeding mechanism, the weighing mechanism and the discharging mechanism are arranged in sequence, the carrying mechanism is erected at the weighing mechanism and the discharging mechanism, and the discharging mechanism is arranged on the operation cabinet. The weighing mechanism comprises a conveying belt line, a belt line jacking set, pole piece jacking sets and a weighing set, the conveying belt line is installed on the belt line jacking set, the weighing set is located in the middle of the conveying belt line, and the pole piece jacking sets are arranged at the two ends of the belt line jacking set respectively. According to the negative pole piece weighing machine, automatic feeding, automatic weighing, automatic carrying and automatic discharging of negative pole pieces are achieved through the feeding mechanism, the weighing mechanism, the carrying mechanism and the discharging mechanism, manual operation can be reduced, and the weighing efficiency of the negative pole pieces is improved; and the negative pole pieces are sequentially dropped through the belt line jacking group and the pole piece jacking group of the weighing mechanism, so that the weighing quality of the negative pole pieces can be ensured, and the negative pole pieces are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pole piece production equipment, in particular to a negative pole piece weighing machine. Background Art

[0002] The consistency of battery electrodes refers to the fact that the weight and shape size of a group of battery electrodes are within a specific range. The weight and shape size can be divided into several ranges according to the manufacturer's requirements. In addition, consistency also includes the thickness of the electrode coating, etc. In the production process of battery electrodes, the consistency of battery electrodes directly affects the battery life. However, due to manufacturing errors, battery electrodes often have different weights. Therefore, in the production process, it is generally necessary to collect battery electrodes by weight.

[0003] At present, the process of weighing and sorting battery electrodes is usually done manually, that is, the electrodes are manually placed on an electronic scale for weighing and then sorted. The quality of weighing and sorting electrodes is closely related to people's emotions, physical strength, and behavioral state, and is easily interfered by human factors. Manual weighing can easily cause the electrodes to bend, thereby damaging the electrodes. At the same time, manual weighing is inefficient and costly, which greatly wastes human resources. Therefore, it is urgent to design a device that can automatically weigh the electrodes to realize automatic weighing of battery electrodes. Utility Model Content

[0004] The utility model aims to provide a negative electrode plate weighing machine which can ensure weighing quality, avoid damage and improve weighing efficiency.

[0005] In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A negative electrode plate weighing machine comprises an operating cabinet, and a feeding mechanism, a weighing mechanism, a conveying mechanism and a discharging mechanism arranged on the operating cabinet. The feeding mechanism, the weighing mechanism and the discharging mechanism are arranged in sequence along the weighing direction of the plate, and the conveying mechanism is set up at the weighing mechanism and the discharging mechanism. The weighing mechanism comprises a conveying belt line, a belt line lifting group, a plate lifting group and a weighing group. The conveying belt line is installed on the belt line lifting group, the weighing group is located in the middle of the conveying belt line, and the plate lifting groups are respectively arranged at both ends of the belt line lifting group.

[0007] In one embodiment, the belt line lifting group includes a first fixed seat, a first lifting drive and a first lifting plate, the first fixed seat is installed on the operating cabinet, the first lifting drive is arranged at the bottom of the first fixed seat, the first lifting plate is connected to the first lifting drive, and the transport belt line is installed on the first lifting plate.

[0008] In one embodiment, the pole piece lifting group includes a second fixed seat, a second lifting drive component and a second lifting plate, the second fixed seat is installed on the operating cabinet, the second lifting drive component is arranged on the second fixed seat and connected to the second lifting plate, and a first lifting block is arranged on the second lifting plate.

[0009] In one embodiment, the weighing group includes a fixed bracket, a weighing fixed seat, a weighing sensor and a weighing plate. The fixed bracket is installed on the operating cabinet and is located above the first lifting plate. The weighing fixed seat is arranged on the fixed bracket, the weighing sensor is installed on the weighing fixed seat, and the weighing plate is connected to the weighing sensor.

[0010] In one of the embodiments, the weighing plate is provided with an avoidance hole cooperating with the first lifting block.

[0011] In one embodiment, the transport mechanism includes a support frame, a rotating drive member, a transport connecting plate, a transport drive member and a transport fixing plate. The support frame is mounted on an operating cabinet, the rotating drive member is installed on the support frame and connected to the transport connecting plate, the transport drive member is arranged on the transport connecting plate, the transport fixing plate is connected to the transport drive member, and a vacuum suction nozzle is arranged on the transport fixing plate.

[0012] In one of the embodiments, the unloading mechanism includes a unloading roller line, a unloading jig and a unloading lifting group. The unloading roller line is used to transport the unloading jig, and a positioning group is arranged on the unloading roller line. The positioning group is used to block and position the transported unloading jig. The unloading lifting group is installed on the unloading roller line and can be inserted from the bottom of the unloading jig.

[0013] In one of the embodiments, a lifting hole for material removal is provided at the bottom of the material removal jig.

[0014] In one embodiment, the unloading jacking group includes a U-shaped mounting plate, a third jacking drive and a third jacking plate. The U-shaped mounting plate is arranged below the unloading roller line. The third jacking drive is installed at the bottom of the U-shaped mounting plate and is connected to the third jacking plate. A second jacking block corresponding to the unloading jacking hole is arranged on the third jacking plate.

[0015] In one embodiment, there are two positioning groups, which are spaced apart, and the spacing distance matches the length of the blanking jig. The positioning group includes a positioning mounting frame, a positioning drive member and a positioning block. The positioning mounting frame is arranged below the blanking roller line, the positioning drive member is fixed on the positioning mounting frame, and the positioning block is connected to the positioning drive member. Beneficial Effects

[0016] The utility model negative electrode sheet weighing machine has a feeding mechanism that automatically loads negative electrode sheets, and conveys the negative electrode sheets to the weighing mechanism, and the weighing mechanism automatically weighs the negative electrode sheets. After the weighing of the negative electrode sheets is completed, the conveying mechanism conveys the weighed negative electrode sheets to the unloading mechanism, and the unloading mechanism completes the automatic unloading of the negative electrode sheets. Finally, the feeding mechanism, the weighing mechanism, the conveying mechanism and the unloading mechanism realize automatic conveying, loading, weighing, conveying and unloading of the negative electrode sheets, which can reduce manual operation and improve the weighing efficiency of the negative electrode sheets. The negative electrode sheets are sequentially dropped by the belt line lifting group and the sheet lifting group of the weighing mechanism, thereby ensuring the weighing quality of the negative electrode sheets and avoiding damage to the negative electrode sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the negative electrode plate weighing machine of the utility model;

[0018] Figure 2 It is a side view of the negative electrode plate weighing machine of the utility model;

[0019] Figure 3 It is a schematic diagram of the weighing mechanism structure of the negative electrode plate weighing machine of the utility model;

[0020] Figure 4 It is a side view of the weighing mechanism of the negative electrode plate weighing machine of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the pole piece lifting group of the negative pole piece weighing machine of the utility model;

[0022] Figure 6 It is a schematic diagram of the weighing group structure of the negative electrode plate weighing machine of the utility model;

[0023] Figure 7 It is a schematic diagram of the structure of the transport mechanism of the negative electrode plate weighing machine of the utility model;

[0024] Figure 8 It is a schematic diagram of the structure of the unloading mechanism of the negative electrode sheet weighing machine of the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure of the positioning group of the negative electrode plate weighing machine of the utility model;

[0026] Fig.10 It is a schematic diagram of the structure of the material unloading fixture of the negative electrode sheet weighing machine of the utility model;

[0027] Fig.11 The utility model is a schematic diagram of the structure of the material unloading and lifting group of the negative electrode plate weighing machine.

[0028] As shown in the attached figure:

[0029] 100. Operating cabinet;

[0030] 200, feeding mechanism;

[0031] 300, weighing mechanism; 310, conveying belt line; 320, belt line lifting group; 321, first fixed seat; 322, first lifting drive; 323, first lifting plate; 330, pole piece lifting group; 331, second fixed seat; 332, second lifting drive; 333, second lifting plate; 334, first lifting block; 340, weighing group; 341, fixed bracket; 342, weighing fixed seat; 343, weighing sensor; 344, weighing plate; 345, avoidance hole;

[0032] 400, transport mechanism; 410, support frame; 420, rotary drive member; 430, transport connecting plate; 440, transport drive member; 450, transport fixing plate; 460, vacuum nozzle;

[0033] 500, unloading mechanism; 510, unloading roller line; 520, unloading fixture; 521, unloading lifting hole; 530, unloading lifting group; 531, U-shaped mounting plate; 532, third lifting plate; 533, second lifting block; 540, positioning group; 541, positioning mounting frame; 542, positioning drive member; 543, positioning block. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] See also Figures 1 to 11 A negative electrode plate weighing machine includes an operating cabinet 100, and a feeding mechanism 200, a weighing mechanism 300, a conveying mechanism 400 and a discharging mechanism 500 arranged on the operating cabinet 100. The feeding mechanism 200, the weighing mechanism 300 and the discharging mechanism 500 are arranged in sequence along the weighing direction of the plate, and the conveying mechanism 400 is set up at the weighing mechanism 300 and the discharging mechanism 500. The weighing mechanism 300 includes a conveying belt line 310, a belt line lifting group 320, a plate lifting group 330 and a weighing group 340. The conveying belt line 310 is installed on the belt line lifting group 320, the weighing group 340 is located in the middle of the conveying belt line 310, and the plate lifting groups 330 are respectively arranged at both ends of the belt line lifting group 320.

[0038] Specifically, in the present embodiment, when weighing the negative electrode sheets, the cut negative electrode sheets are automatically conveyed by the feeding mechanism 200. The feeding mechanism 200 may use a belt line for conveying, and of course other conveying mechanisms may also be used for conveying, which is not limited here. When conveying, the feeding mechanism 200 will directly convey the negative electrode sheets to the transport belt line 310 of the weighing mechanism 300. When the negative electrode sheets are placed on the transport belt line 310 as a whole, the belt line lifting group 320 will move downward with the transport belt line 310, so that the negative electrode sheets on the transport belt line 310 fall on the sheet lifting group 330. The sheet lifting group 300 will also move downward, and the negative electrode sheets will fall on the weighing group 340, which will weigh them. After the weighing is completed, the sheet lifting group 330 will move upward and The negative electrode sheet on the weighing group 340 is lifted up. After lifting up, the belt line lifting group 320 also drives the transport belt line 310 to reset and lift upward, thereby lifting up the negative electrode sheet on the sheet lifting group 330. After lifting up, the negative electrode sheet is adsorbed by the conveying mechanism 400, and the adsorbed negative electrode sheet is placed on the unloading mechanism 500, and the unloading mechanism 500 completes the unloading of the negative electrode sheet. Finally, the automatic conveying, loading, weighing, conveying and unloading of the negative electrode sheet are realized through the feeding mechanism 200, the weighing mechanism 300, the conveying mechanism 400 and the unloading mechanism 500, thereby reducing manual operation and improving the weighing efficiency of the negative electrode sheet. The negative electrode sheet is dropped in sequence by the belt line lifting group 320 and the sheet lifting group 330, so as to ensure the weighing quality and avoid damage to the negative electrode sheet.

[0039] See also Figures 3 to 6 In order to weigh the negative electrode sheet, the belt line lifting group 320 in this embodiment includes a first fixed seat 321, a first lifting driving member 322 and a first lifting plate 323. The first fixed seat 321 is installed on the operating cabinet 100, the first lifting driving member 322 is arranged at the bottom of the first fixed seat 321, the first lifting plate 323 is connected to the first lifting driving member 322, and the transport belt line 310 is installed on the first lifting plate 323. The first lifting driving member 322 drives the first lifting plate 323 to rise and fall, thereby driving the transport belt line 310 to rise and fall.

[0040] When the negative electrode sheets are transported from the feeding mechanism 200 to the weighing mechanism 300, the negative electrode sheets will be directly transported to the conveying belt line 310 of the weighing mechanism 300. At this time, the first lifting drive member 322 will drive the first lifting plate 323 to move downward. During the movement, the first lifting plate 323 will also move downward with the conveying belt line 310, so that the negative electrode sheets on the conveying belt line 310 fall on the sheet lifting group 330, and then the sheet lifting group 330 will drop the negative electrode sheets on the weighing group 340, and the weighing group 340 will weigh the negative electrode sheets, thereby realizing automatic weighing of the negative electrode sheets.

[0041] In addition, in order to ensure the quality of the negative electrode plate during weighing, the electrode plate lifting group 330 includes a second fixed seat 331, a second lifting drive member 332 and a second lifting plate 333. The second fixed seat 331 is installed on the operating cabinet 100, and the second lifting drive member 332 is arranged on the second fixed seat 331 and connected to the second lifting plate 333. The second lifting drive member 332 drives the second lifting plate 333 to rise and fall, and a first lifting block 334 is arranged on the second lifting plate 333.

[0042] When the belt line lifting group 320 drives the transport belt line 310 to move downward, the negative electrode sheet on the transport belt line 310 will directly fall on the first lifting block 334 of the second lifting plate 333. At this time, the second lifting driving member 332 will drive the second lifting plate 333 to move downward as well. When the second lifting plate 333 moves downward, the negative electrode sheet on the first lifting block 334 will fall directly on the weighing group 340, and the negative electrode sheet can be weighed by the weighing group 340; and by moving the electrode sheet lifting group 330 downward and placing the negative electrode sheet on the weighing group 340, the drop of the negative electrode sheet falling on the weighing group 340 can be effectively controlled, thereby realizing the protection of the symmetrical group 340, and by controlling its drop, the accuracy of the weighing group 340 when weighing the negative electrode sheet can be ensured, thereby ensuring the weighing quality, and at the same time, the negative electrode sheet can be protected to avoid bending of the negative electrode sheet.

[0043] The weighing group 340 in this embodiment includes a fixed bracket 341, a weighing fixed seat 342, a weighing sensor 343 and a weighing plate 344. The fixed bracket 341 is installed on the operating cabinet 100 and is located above the first lifting plate 323. The weighing fixed seat 342 is arranged on the fixed bracket 341, and the weighing sensor 343 is installed on the weighing fixed seat 342. The weighing plate 344 is connected to the weighing sensor 343. When the pole piece lifting group 330 moves downward, the negative pole piece will be directly dropped on the weighing plate 344, and then the negative pole piece on the weighing plate 344 can be directly weighed by the weighing sensor 343, thereby realizing automatic weighing.

[0044] When weighing the negative electrode sheet, the negative electrode sheet needs to first fall on the electrode sheet lifting group 330, and then fall on the weighing plate 344 of the weighing group 340 through the downward movement of the electrode sheet lifting group 330. Therefore, an avoidance hole 345 that cooperates with the first lifting block 334 needs to be opened on the weighing plate 344. In the initial state, the first lifting block 334 of the electrode sheet lifting group 330 will pass through the avoidance hole 345, so that its top is higher than the top of the weighing plate 344. When the first lifting block 334 moves downward, it will move downward from the avoidance hole 345, so that its top is lower than the weighing plate 344, so that the negative electrode sheet falls on the weighing plate 344, and the structural design between the electrode sheet lifting group 330 and the weighing group 340 is reasonable.

[0045] See also Figure 7 After the weighing of the negative electrode sheets is completed, the negative electrode sheets at the weighing mechanism 300 need to be transported to the unloading mechanism 500. In order to realize the automatic transportation of the negative electrode sheets, the transportation mechanism 400 in this embodiment includes a support frame 410, a rotating driving member 420, a transportation connecting plate 430, a transportation driving member 440 and a transportation fixing plate 450. The support frame 410 is mounted on the operating cabinet 100, the rotating driving member 420 is installed on the support frame 410 and is connected to the transportation connecting plate 430, the transportation driving member 440 is arranged on the transportation connecting plate 430, and the transportation fixing plate 450 is connected to the transportation driving member 440, and a vacuum suction nozzle 460 is arranged on the transportation fixing plate 450.

[0046] After the weighing mechanism 300 has finished weighing the negative electrode sheet, the moving module on the support frame 410 (the moving module is a prior art) drives the vacuum suction nozzle 460 to move horizontally to the weighing mechanism 300, and the transport driving member 440 drives the vacuum suction nozzle 460 to move downward, and the negative electrode sheet on the weighing mechanism 300 is adsorbed by the vacuum suction nozzle 460. After adsorption, the moving module drives the vacuum suction nozzle 460 to move horizontally to the unloading mechanism 500, and the rotary The rotating driving member 420 will drive the transport connecting plate 430 to rotate 90°, thereby rotating the adsorbed negative electrode sheet 90°, and then drive the vacuum suction nozzle 460 to move downward through the transport driving member 440, and the vacuum suction nozzle 460 will place the negative electrode sheet to the corresponding position of the unloading mechanism 500, thereby realizing automatic transportation of the negative electrode sheet, thereby reducing manual operation, improving the efficiency of weighing the negative electrode sheet, and effectively protecting the negative electrode sheet to avoid damage to the negative electrode sheet.

[0047] See also Figures 8 to 11 In this embodiment, in order to automatically unload the negative electrode sheets, the unloading mechanism 500 includes an unloading roller line 510, an unloading fixture 520 and an unloading lifting group 530. The unloading roller line 510 is used to transport the unloading fixture 520, and a positioning group 540 is provided on the unloading roller line 510. The positioning group 510 is used to block and position the transported unloading fixture 520. The unloading lifting group 530 is installed on the unloading roller line 510 and can be inserted from the bottom of the unloading fixture 520.

[0048] Specifically, when unloading the negative electrode sheet, the empty unloading jig 520 is placed on the unloading roller line 510, and the unloading roller line 510 carries the unloading jig 520 for transportation. After the unloading jig 520 is transported to the set position, the positioning group 540 rises upward to block and position the unloading jig 520, and at the same time, the unloading lifting group 530 penetrates from the bottom of the unloading jig 520 and penetrates to the set height. At this time, the conveying mechanism 400 transports the weighed negative electrode sheet into the unloading jig 520 and places it on the unloading top. On the lifting group 530, after placing a negative electrode sheet, the unloading lifting group 530 will descend, and so on, until a set number of negative electrode sheets are stacked in the unloading fixture 520, and then, the unloading lifting group 530 moves out from the bottom of the unloading fixture 520, the positioning group 540 resets downward, and the unloading roller line 510 continues to move the unloading fixture 520 with the set number of negative electrode sheets stacked on it until the next process, thereby completing the automatic unloading of the negative electrode sheets, thereby reducing manual operation and avoiding damage to the negative electrode sheets.

[0049] When the unloading roller line 510 transports the unloading jig 520 to the set position, the positioning group 540 needs to position the front and rear of the unloading jig 520. Therefore, in this embodiment, two groups of positioning groups 540 are arranged at intervals, and the interval distance is matched with the length of the unloading jig 520. The positioning group 540 includes a positioning mounting frame 541, a positioning drive member 542 and a positioning block 543. The positioning mounting frame 540 is arranged below the unloading roller line 510, the positioning drive member 542 is fixed on the positioning mounting frame 541, and the positioning block 543 is connected to the positioning drive member 542. When the unloading jig 520 is transported to the set position, the positioning drive 542 will drive the positioning block 543 to rise upward, thereby blocking and positioning the unloading jig 520 through the positioning block 543, thereby achieving the positioning of the unloading jig 520 and preventing the unloading jig 520 from being displaced during the transportation of the negative electrode sheet, so that the negative electrode sheet can be smoothly placed in the unloading jig 520.

[0050] In addition, since the material unloading and lifting group 530 needs to pass through the material unloading fixture 520, a material unloading and lifting hole 521 is opened at the bottom of the material unloading fixture 520, and the material unloading and lifting group 530 can be easily inserted through the material unloading and lifting hole 521, thereby realizing the stacking of negative electrode sheets.

[0051] In order to stack the negative electrode sheets in the unloading jig 520, the unloading lifting group 530 in this embodiment includes a U-shaped mounting plate 531, a third lifting drive member and a third lifting plate 532. The U-shaped mounting plate 531 is arranged below the unloading roller line 510, and the third lifting drive member (not shown in the figure) is installed at the bottom of the U-shaped mounting plate 531. The third lifting plate 532 is arranged between the unloading roller line 510 and the U-shaped mounting plate 531 and is connected to the third lifting drive member. A second lifting block 533 corresponding to the unloading lifting hole 521 is arranged on the third lifting plate 532. When the unloading jig 520 is transported to the set position, the third lifting drive component will drive the third lifting plate 532 to move upward, and make the second lifting block 533 on the third lifting plate 532 pass through the unloading lifting hole 521 at the bottom of the unloading jig 520 into the unloading jig 520, and make the second lifting block 533 rise to the set height, and the rear conveying mechanism 400 will convey the weighed negative electrode sheets to the unloading jig 520 in turn, and be supported by the second lifting block 533. After placing a piece of negative electrode sheet, the second lifting block 533 will drop down a set distance, and so on, directly stacking and placing a set number of negative electrode sheets in the unloading jig 520. At this time, the second lifting block 533 is moved out of the unloading lifting hole 521 driven by the third lifting drive component, so as to facilitate the unloading roller line 510 to convey the unloading jig 520 again, thereby realizing the automatic unloading of negative electrode sheets.

[0052] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Any technician in the industry can smoothly implement the utility model according to the drawings shown in the specification and the above description; however, any equivalent changes, modifications and evolutions made by any technician familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the scope of protection of the technical solution of the utility model.

Claims

1. A negative electrode weighing machine, characterized in that: It includes an operating cabinet, and a feeding mechanism, a weighing mechanism, a transporting mechanism and a feeding mechanism arranged on the operating cabinet. The feeding mechanism, the weighing mechanism and the feeding mechanism are arranged in sequence along the weighing direction of the electrode piece, and the transporting mechanism is set up at the weighing mechanism and the feeding mechanism. The weighing mechanism comprises a conveying belt line, a belt line lifting group, a pole piece lifting group and a weighing group. The conveying belt line is installed on the belt line lifting group. The weighing group is located in the middle of the conveying belt line, and pole piece lifting groups are respectively arranged at both ends of the belt line lifting group.

2. The negative electrode sheet weighing machine according to claim 1, characterized in that: The belt line lifting group includes a first fixed seat, a first lifting drive and a first lifting plate. The first fixed seat is installed on the operating cabinet, the first lifting drive is arranged at the bottom of the first fixed seat, the first lifting plate is connected to the first lifting drive, and the transport belt line is installed on the first lifting plate.

3. The negative electrode sheet weighing machine according to claim 2, characterized in that: The pole piece lifting group includes a second fixed seat, a second lifting drive and a second lifting plate. The second fixed seat is installed on the operating cabinet. The second lifting drive is arranged on the second fixed seat and connected to the second lifting plate. The first lifting block is arranged on the second lifting plate.

4. The negative electrode sheet weighing machine according to claim 3, characterized in that: The weighing group includes a fixed bracket, a weighing fixed seat, a weighing sensor and a weighing plate. The fixed bracket is installed on the operating cabinet and is located above the first lifting plate. The weighing fixed seat is arranged on the fixed bracket. The weighing sensor is installed on the weighing fixed seat. The weighing plate is connected to the weighing sensor.

5. The negative electrode sheet weighing machine according to claim 4, characterized in that: The weighing plate is provided with an avoidance hole matched with the first lifting block.

6. The negative electrode sheet weighing machine according to claim 1, characterized in that: The transport mechanism includes a support frame, a rotating drive member, a transport connecting plate, a transport drive member and a transport fixing plate. The support frame is mounted on an operating cabinet, the rotating drive member is installed on the support frame and connected to the transport connecting plate, the transport drive member is arranged on the transport connecting plate, the transport fixing plate is connected to the transport drive member, and a vacuum suction nozzle is arranged on the transport fixing plate.

7. The negative electrode sheet weighing machine according to claim 1, characterized in that: The unloading mechanism includes an unloading drum line, an unloading jig and an unloading lifting group. The unloading drum line is used to transport the unloading jig, and a positioning group is arranged on the unloading drum line. The positioning group is used to block and position the transported unloading jig. The unloading lifting group is installed on the unloading drum line and can be inserted from the bottom of the unloading jig.

8. The negative electrode sheet weighing machine according to claim 7, characterized in that: A material unloading lifting hole is provided at the bottom of the unloading fixture.

9. The negative electrode sheet weighing machine according to claim 8, characterized in that: The unloading jacking group includes a U-shaped mounting plate, a third jacking drive and a third jacking plate. The U-shaped mounting plate is arranged below the unloading roller line. The third jacking drive is installed at the bottom of the U-shaped mounting plate and is connected to the third jacking plate. A second jacking block corresponding to the unloading jacking hole is arranged on the third jacking plate.

10. The negative electrode sheet weighing machine according to claim 8, characterized in that: The positioning groups are provided in two groups and are spaced apart, and the spacing distance thereof matches the length of the blanking jig, and the positioning groups include a positioning mounting frame, a positioning driving member and a positioning block, the positioning mounting frame is provided below the blanking roller line, the positioning driving member is fixed on the positioning mounting frame, and the positioning block is connected to the positioning driving member.

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