Tablet press for sodium ion battery negative electrode production

Abstract

The utility model discloses a tablet press for producing a negative electrode of a sodium ion battery, which relates to the technical field of tablet presses and comprises a working plate, an inverted U-shaped frame is fixedly connected to the upper surface of the working plate, two hydraulic rods are fixedly connected to the bottom surface of the inverted U-shaped frame, and synchronous plates are fixedly connected to the bottom ends of the two hydraulic rods. Four pressing blocks are fixedly connected to the bottom face of the synchronous plate, four tablet pressing holes are formed in the working plate, vent holes are formed in the tablet pressing holes, and a discharging buffering mechanism is arranged on the bottom face of the working plate. By means of the discharging buffering mechanism, when the pressed battery pressing pieces fall down from the pressing piece holes, the pressing pieces can be buffered through the elasticity of springs, the impact force of the pressing pieces in the discharging process is effectively reduced, the pressing pieces are prevented from being damaged, the quality and performance of the battery pressing pieces are guaranteed, and the qualified rate of products is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of tablet presses, and specifically relates to a tablet press for the production of the negative electrode of a sodium-ion battery. Background Art

[0002] With the continuous development of new energy technologies, sodium-ion batteries, as a new type of battery technology, are gradually attracting wide attention in the industry. In the production process of sodium-ion batteries, the preparation of the negative electrode sheet is a crucial link, and it is necessary to press and produce the negative electrode sheet of the battery.

[0003] The patent with the application number 202222164114.2 discloses a tablet pressing device for the positive and negative electrode sheets in the production of sodium-ion batteries, including a die base. Three tablet pressing grooves are evenly opened on the die base, and the tablet pressing grooves penetrate through the upper and lower ends of the die base. A second mounting plate is installed at the front end of the die base, and a demoulding device is movably installed on the die base and the second mounting plate. The demoulding device is composed of a substrate, a first rod, a supporting plate, a second rod, a spring and a pulling block. There are three first rods and they are evenly installed at the rear end of the substrate. There are three supporting plates and they are respectively installed at the rear ends of the three first rods. The second rod is installed at the front end of the substrate. The spring is sleeved on the second rod, and the pulling block is installed at the front end of the second rod.

[0004] The above scheme effectively simplifies the demoulding process of the positive and negative electrode sheets of sodium-ion batteries and improves the production efficiency. However, there are still certain problems in the post-treatment link after tablet pressing and demoulding. Specifically, in the above scheme, by pulling the supporting plate, the pressed battery tablet falls into the container below under the action of gravity. However, in this process, no buffer protection is provided for the battery tablet, resulting in the battery tablet being possibly impacted when it falls into the container, thereby causing damage. This kind of damage may affect the performance and service life of the battery and reduce the product quality. Summary of the Utility Model

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a tablet press for the production of the negative electrode of a sodium-ion battery.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A tablet press for the production of the negative electrode of a sodium-ion battery, including a working plate. Four supporting legs are fixedly connected to the bottom surface of the working plate. An inverted U-shaped frame is fixedly connected to the upper surface of the working plate. Two hydraulic rods are fixedly connected to the bottom surface of the inverted U-shaped frame. The bottom ends of the two hydraulic rods are both fixedly connected with a synchronous plate. Four pressing blocks are fixedly connected to the bottom surface of the synchronous plate. Four tablet pressing holes are opened inside the working plate. Ventilation holes are opened inside the tablet pressing holes. An outfeed buffer mechanism is arranged on the bottom surface of the working plate.

[0007] Preferably, a tablet pressing tray is placed directly in front of the working plate. Two limiting blocks are fixedly connected to the front surface of the working plate. A U-shaped frame plate is fixedly connected to the bottom surface of the working plate. A supporting plate is slidably connected inside the U-shaped frame plate. The supporting plate is in contact with the bottom surface of the working plate. A pulling handle is fixedly connected to the surface of the supporting plate close to the limiting block.

[0008] Preferably, the discharging buffer mechanism includes a U-shaped plate and a U-shaped frame. The U-shaped plate is fixedly connected to the bottom surface of the U-shaped frame plate. The U-shaped frame is fixedly connected to the bottom surface of the working plate.

[0009] Preferably, a round pin rod is fixedly connected inside the U-shaped plate. A rotating bar is rotatably connected to the outer surface of the round pin rod.

[0010] Preferably, a rotating sliding plate is fixedly connected to the surface of the rotating bar close to the U-shaped frame. The upper surface of the rotating sliding plate is in contact with the U-shaped frame plate.

[0011] Preferably, two springs are fixedly connected to the bottom surface of the rotating sliding plate. The bottom ends of both springs are fixedly connected to the U-shaped frame.

[0012] Beneficial effects:

[0013] Compared with the prior art, the tablet press for producing the negative electrode of the sodium ion battery has the following beneficial effects:

[0014] First, through the arranged discharging buffer mechanism of the present utility model, when the pressed battery tablet falls from the tablet pressing hole, the elasticity of the spring can be utilized to buffer the tablet, effectively reducing the impact force of the tablet during the blanking process, preventing the tablet from being damaged, thereby ensuring the quality and performance of the battery tablet and improving the qualified rate of the product.

[0015] Second, the tablet press of the present utility model is reasonably designed and easy to operate. The hydraulic rod drives the synchronous plate and the pressing block for efficient pressing, and the vent holes are coordinated to ensure the uniformity of the material during the pressing process. At the same time, the convenient pulling design of the supporting plate enables the tablet to be demolded quickly and conveniently. With the automatic buffering and sliding functions of the discharging buffer mechanism, the production efficiency is greatly improved, the labor intensity of the operator is reduced, and it is very suitable for the large-scale production of the negative electrode sheets of sodium ion batteries. Description of the drawings

[0016] Figure 1 is the three-dimensional front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the three-dimensional schematic diagram of the vent hole of the present utility model;

[0018] Figure 3 is the three-dimensional structural schematic diagram of the discharging buffer mechanism of the present utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the round pin rod and the rotating bar of the present utility model.

[0020] In the figure: 1, working plate; 2, support leg; 3, inverted U-shaped frame; 4, hydraulic rod; 5, synchronous plate; 6, pressing block; 7, pressing sheet hole; 8, discharging buffer mechanism; 801, U-shaped plate; 802, round pin rod; 803, rotating bar; 804, rotating and sliding material plate; 805, spring; 806, U-shaped frame; 9, pressing sheet tray; 10, limiting block; 11, ventilation hole; 12, U-shaped frame plate; 13, supporting plate; 14, pulling handle. Specific embodiments

[0021] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0022] See Figures 1 to 4 , a tablet press for the production of the negative electrode of a sodium-ion battery, including a working plate 1, four support legs 2 are fixedly connected to the bottom surface of the working plate 1, an inverted U-shaped frame 3 is fixedly connected to the upper surface of the working plate 1, two hydraulic rods 4 are fixedly connected to the bottom surface of the inverted U-shaped frame 3, the bottom ends of the two hydraulic rods 4 are both fixedly connected with a synchronous plate 5, four pressing blocks 6 are fixedly connected to the bottom surface of the synchronous plate 5, four pressing sheet holes 7 are opened in the working plate 1, a ventilation hole 11 is opened in the pressing sheet hole 7, and a discharging buffer mechanism 8 is arranged on the bottom surface of the working plate 1.

[0023] A pressing sheet tray 9 is placed in front of the working plate 1, two limiting blocks 10 are fixedly connected to the front surface of the working plate 1, a U-shaped frame plate 12 is fixedly connected to the bottom surface of the working plate 1, a supporting plate 13 is slidably connected inside the U-shaped frame plate 12, the supporting plate 13 is in contact with the bottom surface of the working plate 1, and a pulling handle 14 is fixedly connected to the side of the supporting plate 13 close to the limiting block 10.

[0024] The discharging buffer mechanism 8 includes a U-shaped plate 801 and a U-shaped frame 806, the U-shaped plate 801 is fixedly connected to the bottom surface of the U-shaped frame plate 12, and the U-shaped frame 806 is fixedly connected to the bottom surface of the working plate 1.

[0025] A round pin rod 802 is fixedly connected inside the U-shaped plate 801, and a rotating bar 803 is rotatably connected to the outer surface of the round pin rod 802. A rotating and sliding material plate 804 is fixedly connected to the side of the rotating bar 803 close to the U-shaped frame 806, and the upper surface of the rotating and sliding material plate 804 is in contact with the U-shaped frame plate 12. Two springs 805 are fixedly connected to the bottom surface of the rotating and sliding material plate 804, and the bottom ends of the two springs 805 are both fixedly connected to the U-shaped frame 806.

[0026] When the battery tablet falls onto the rotating slide plate 804, due to the elastic action of the spring 805, the rotating slide plate 804 will move slightly downward and buffer the impact force of the tablet. After that, the battery tablet uses its own gravity to make the rotating slide plate 804 rotate downward around the round pin rod 802 and form a slope with the U-shaped frame plate 12. In this way, the tablet can smoothly slide into the tablet tray 9 placed directly below the discharge port of the rotating slide plate 804. Subsequently, under the restoring force of the spring 805, the rotating slide plate 804 fits back with the U-shaped frame plate 12 to prepare for the next blanking. During the whole process, through the buffering action of the discharge buffer mechanism 8, the battery tablet is effectively protected from damage during blanking, thereby improving the product quality and performance.

[0027] Through the provided ventilation holes 11, the ventilation function can be achieved, preventing the uneven pressing phenomenon caused by the inability to discharge air during the pressing process of the material.

[0028] Four tablet holes 7 are provided, and each tablet hole 7 is internally provided with a ventilation hole 11. The specific position of the tablet tray 9 is set directly below the discharge port of the rotating slide plate 804, which can accommodate and store the pressed battery tablets, facilitating the entry into the next processing step. A protective pad can be placed in the tablet tray 9 to further protect the battery tablets.

[0029] Working principle: When this tablet press is working, first, the operator places the negative electrode material of the sodium-ion battery to be pressed on the working plate 1, and it is necessary to ensure that the material is aligned with the tablet pressing hole 7. In the initial state, the hydraulic rod 4 is in a contracted state, the synchronous plate 5 and the pressing block 6 are at the highest point and do not contact the working plate 1. Then, the hydraulic rod 4 is started, and the hydraulic rod 4 begins to extend, pushing the synchronous plate 5 and the pressing block 6 to move downward. When the pressing block 6 enters the tablet pressing hole 7, the pressing of the negative electrode material starts. During the pressing process, the vent hole 11 plays a role in ventilation to prevent uneven pressing caused by the inability of air to be discharged during the pressing process. After the pressing is completed, the hydraulic rod 4 starts to contract, driving the synchronous plate 5 and the pressing block 6 to rise and leave the tablet pressing hole 7. At this time, the pressed battery tablet remains in the tablet pressing hole 7. Subsequently, the operator pulls the pulling handle 14 of the supporting plate 13 to make the supporting plate 13 slide inside the U-shaped frame plate 12, thereby exposing the bottom of the tablet pressing hole 7. In this way, the tablet will fall onto the rotating sliding plate 804 under the action of gravity. Due to the elastic action of the spring 805, the rotating sliding plate 804 will move slightly downward and buffer the impact force of the tablet. Then, the battery tablet uses its own gravity to make the rotating sliding plate 804 rotate downward around the round pin rod 802 and form a slope with the U-shaped frame plate 12. In this way, the tablet can smoothly slide into the tablet tray 9 placed directly below the discharge port of the rotating sliding plate 804. Subsequently, under the restoring force of the spring 805, the rotating sliding plate 804 fits with the U-shaped frame plate 12 again to prepare for the next blanking. During the whole process, through the buffering action of the discharge buffering mechanism 8, the battery tablet is effectively protected from damage during the blanking process, thereby improving the product quality and performance. In addition, the utility model has the advantages of simple structure, convenient operation and high production efficiency, and is suitable for mass production of negative electrode sheets of sodium-ion batteries.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A tablet press for the production of the negative electrode of a sodium-ion battery, comprising a working plate (1), characterized in that: The upper surface of the working plate (1) is fixedly connected with an inverted U-shaped frame (3). The bottom surface of the inverted U-shaped frame (3) is fixedly connected with two hydraulic rods (4). The bottom ends of the two hydraulic rods (4) are both fixedly connected with a synchronous plate (5). The bottom surface of the synchronous plate (5) is fixedly connected with four pressing blocks (6). Four pressing holes (7) are formed inside the working plate (1). An air vent hole (11) is formed inside the pressing hole (7). A discharge buffer mechanism (8) is arranged on the bottom surface of the working plate (1).

2. The tablet press for producing the negative electrode of a sodium-ion battery according to claim 1, wherein: A pressing tray (9) is placed directly in front of the working plate (1). Two limiting blocks (10) are fixedly connected to the front surface of the working plate (1). A U-shaped frame plate (12) is fixedly connected to the bottom surface of the working plate (1). A supporting plate (13) is slidably connected inside the U-shaped frame plate (12). The supporting plate (13) is in contact with the bottom surface of the working plate (1). A pulling handle (14) is fixedly connected to the side of the supporting plate (13) close to the limiting block (10).

3. A tablet press for producing the negative electrode of a sodium-ion battery according to claim 1, characterized in that: The discharge buffer mechanism (8) includes a U-shaped plate (801) and a U-shaped frame (806). The U-shaped plate (801) is fixedly connected to the bottom surface of the U-shaped frame plate (12). The U-shaped frame (806) is fixedly connected to the bottom surface of the working plate (1).

4. A tablet press for the production of the negative electrode of a sodium ion battery according to claim 3, characterized in that: A round pin rod (802) is fixedly connected inside the U-shaped plate (801). A rotating bar (803) is rotatably connected to the outer surface of the round pin rod (802).

5. A tablet press for producing the negative electrode of a sodium-ion battery according to claim 4, characterized in that: A rotating sliding plate (804) is fixedly connected to the side of the rotating bar (803) close to the U-shaped frame (806). The upper surface of the rotating sliding plate (804) is in contact with the U-shaped frame plate (12).

6. A tablet press for producing the negative electrode of a sodium-ion battery according to claim 5, characterized in that: Two springs (805) are fixedly connected to the bottom surface of the rotating sliding plate (804). The bottom ends of the two springs (805) are both fixedly connected to the U-shaped frame (806).

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