A new multi-outlet lithium ribbon extruder

Abstract

The utility model relates to lithium band production technical field, concretely relates to a new type of multi -outlet lithium band extruding machine, including heating storehouse, spiral body, motor, connecting frame, a plurality of guide flow grooves and a plurality of lithium plate, heating storehouse is hollow structure, heating storehouse top sets up feed inlet, heating storehouse one end sets up discharge gate, spiral body coaxial setting is in heating storehouse, motor output shaft penetrates heating storehouse and is connected in spiral body one end, a plurality of groups of guide flow groove import end is connected on discharge gate through connecting frame, sets up extrusion mechanism in guide flow groove, and lithium plate is connected in the export end of guide flow groove, wherein, motor drive spiral body can drive the melted lithium ingot in heating storehouse to enter into guide flow groove, and then extrude into the banded structure through lithium plate. Extrusion mechanism can play the transition effect to the shape change of lithium from the import end of guide flow warehouse to the export end of guide flow groove, improve the stability of extruded lithium band.

Description

Technical Field

[0001] This utility model relates to the field of lithium strip production technology, specifically to a novel multi-outlet lithium strip extrusion press. Background Technology

[0002] With the booming development of the lithium battery industry, lithium strip, as a crucial raw material for key components such as lithium battery electrodes, has received significant attention regarding its production quality and efficiency. Currently, lithium strip extrusion is a key process in lithium strip production. Traditional lithium strip extrusion equipment has limitations in its structural design and working principle. On the one hand, its extrusion die structure is relatively simple, and the material flow path within the die is unreasonable, leading to uneven stress on the lithium metal during extrusion and a tendency for localized stress concentration. This negatively impacts the quality of the lithium strip forming, and frequent quality issues necessitate multiple rework processes, reducing production efficiency. On the other hand, the power output of the transmission system in traditional equipment is not precise and stable enough, making it difficult to quickly and accurately adjust extrusion parameters such as pressure and speed according to different lithium strip specifications. This results in long changeover times during production, failing to meet the market demand for multiple specifications. These problems lead to low efficiency in extruding lithium strip using traditional lithium strip extrusion equipment, making it difficult to adapt to the ever-growing demands of the lithium battery market, and necessitating innovation and improvement.

[0003] Chinese Patent Publication No. CN218963647U discloses a lithium strip extrusion device. This device uses a heating element within a vacuum chamber to pre-soften and melt the lithium ingot. The softened lithium ingot is then fed into the extrusion chamber through a connecting port, and the extrusion unit forces the ingot out through the lithium outlet. While multiple lithium outlets improve lithium strip production efficiency, the device has fixed outlets, resulting in insufficient flexibility. Therefore, this invention provides a novel multi-outlet lithium strip extruder. Utility Model Content

[0004] To address the aforementioned issues, a novel multi-outlet lithium strip extruder is provided. By setting several detachable guide channels at the outlet of the heating chamber, the lithium strip extrusion is relatively independent. At the same time, an extrusion mechanism is set in the guide channels, making the quality of the lithium strip more stable during extrusion. By opening and closing the outlet end of the guide channels, the number of lithium strips extruded by the device can be controlled, solving the problem of fixed lithium outlets and insufficient flexibility in traditional devices.

[0005] To address the problems of existing technologies, this utility model provides a novel multi-outlet lithium strip extruder, comprising a heating chamber, a spiral, a motor, a connecting frame, several guide channels, and several lithium outlet plates. The heating chamber is a hollow structure with a feed inlet at the top and a discharge outlet at one end. The spiral is coaxially disposed within the heating chamber, and the motor output shaft passes through the heating chamber and is connected to one end of the spiral. The inlet ends of several sets of guide channels are connected to the discharge outlets via the connecting frame. An extrusion mechanism is disposed within each guide channel, and the lithium outlet plates are connected to the outlet ends of the guide channels. The motor drives the spiral to draw molten lithium ingots from the heating chamber into the guide channels, where they are then extruded into a strip structure by the lithium outlet plates.

[0006] Preferably, the height of the outlet edge is less than the height of the inlet edge of the guide channel, and the height of the inlet edge of the guide channel is greater than the height of the outlet edge of the guide channel.

[0007] Preferably, the extrusion mechanism includes a limiting cylinder, a limiting rod, a spring, and an extrusion plate. The limiting cylinder is disposed on an inner wall of the guide channel. The upper end of the limiting rod is restricted to move within the limiting cylinder. The extrusion plate is fixed to the lower end of the limiting rod. The spring is restricted between the extrusion plate and the limiting cylinder. The two edges of the extrusion plate can contact the upper edge of the inlet end and the upper edge of the outlet end of the guide channel.

[0008] Preferably, the lithium discharging plate includes a connecting plate and several sets of shaping plates. Several lithium discharging ports are provided on the connecting plate. The connecting plate is connected to the outlet ends of several sets of guide channels. The lithium discharging ports are aligned with the outlet ends of the guide channels. The shaping plates are connected to the edges of the lithium discharging ports.

[0009] Preferably, the shaped plate is detachably restricted to the connecting plate.

[0010] Preferably, the connecting frame includes two sets of semi-ring limiting plates and two sets of bolts. The two sets of semi-ring limiting plates can enclose the inlet ends of several sets of the guide channels. The upper and lower ends of the semi-ring limiting plates are respectively provided with connecting holes. The bolts can pass through the two semi-ring limiting plates to restrict the semi-ring limiting plates to the discharge port.

[0011] Preferably, the limiting cylinder in the extrusion mechanism is detachably connected to the inner wall of the guide groove.

[0012] Preferably, the side of the extrusion plate that contacts lithium is a smooth surface.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. By setting several detachable sets of guide channels at the outlet of the heating chamber, the lithium strip extrusion is relatively independent. Simultaneously, an extrusion mechanism is installed within the guide channels to act as a transition during the lithium strip shaping process. The quantity of lithium strip extruded by the device can be controlled by opening and closing the outlet end of the guide channels, resulting in more stable quality of the lithium strip during extrusion.

[0015] 2. By setting multiple independent guide channels, multiple lithium strips can be obtained after extrusion. The detachable design of the guide channels can also improve the subsequent cleaning effect of the device, reduce the residual lithium debris in the parts, and facilitate the subsequent lithium strip extrusion processing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a novel multi-outlet lithium belt extruder according to this utility model.

[0017] Figure 2 This is a schematic diagram of the connection structure between the heating chamber and the spiral body of a novel multi-outlet lithium belt extruder according to this utility model.

[0018] Figure 3 This is a schematic diagram of the connection structure between the connecting frame and the guide groove of a novel multi-outlet lithium strip extruder according to this utility model.

[0019] Figure 4 This is an exploded structural diagram of the connecting frame, guide channel, and lithium outlet plate of a novel multi-outlet lithium strip extruder according to this utility model.

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting frame, guide channel and lithium outlet plate of a novel multi-outlet lithium strip extruder according to this utility model.

[0021] Figure 6 This is an exploded structural diagram of the lithium outlet plate of a novel multi-outlet lithium belt extruder according to this utility model.

[0022] The following components are labeled in the diagram: heating chamber 1, feed inlet 10, discharge outlet 11, spiral body 2, motor 3, connecting frame 4, semi-ring limiting plate 40, bolt 41, guide channel 5, lithium discharge plate 6, connecting plate 60, lithium discharge port 600, shaping plate 61, extrusion mechanism 7, limiting cylinder 70, limiting rod 71, spring 72, and extrusion plate 73. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1-6As shown, this utility model provides a novel multi-outlet lithium strip extruder, including a heating chamber 1, a spiral body 2, a motor 3, a connecting frame 4, several guide channels 5, and several lithium outlet plates 6. The heating chamber 1 is a hollow structure with a feed inlet 10 at the top and a discharge outlet 11 at one end. The spiral body 2 is coaxially arranged inside the heating chamber 1. The output shaft of the motor 3 passes through the heating chamber 1 and is connected to one end of the spiral body 2. The inlet ends of several sets of guide channels 5 are connected to the discharge outlet 11 through the connecting frame 4. An extrusion mechanism 7 is arranged inside the guide channels 5. The lithium outlet plates 6 are connected to the outlet ends of the guide channels 5. The motor 3 drives the spiral body 2 to carry the molten lithium ingots in the heating chamber 1 into the guide channels 5, and then extrudes them into a strip structure through the lithium outlet plates 6. The rotation of the spiral 2 within the heating chamber 1 ensures that the lithium ingots added to the heating chamber 1 are heated more evenly and thoroughly. The inlet 10 of the heating chamber 1 should be positioned at a certain distance from the outlet 11 in the horizontal direction, so that the lithium ingots added through the inlet 10 can be fully heated and melted before being conveyed to the outlet 11 by the rotation of the spiral 2. A guide channel 5 is provided in the heating chamber 1, such as... Figure 3 As shown, the inlet ends of several guide channels 5 are preferably symmetrically distributed about the center of the outlet 11, so that the lithium pushed out of the outlet 11 can enter the guide channel 5 evenly. Finally, the melted lithium is pushed out from the lithium plate 6 into a strip structure. The extrusion mechanism 7 can play a transitional role in the shape change of the lithium entering the inlet end of the guide chamber to flowing out from the outlet end of the guide channel 5.

[0025] The height of the discharge port 11 is less than the height of the inlet end of the guide channel 5, and the height of the inlet end of the guide channel 5 is greater than the height of the outlet end of the guide channel 5. From the discharge port 11 to the outlet end of the guide channel 5, the extruded lithium is gradually flattened into a strip structure, and finally molded into its final shape by the lithium discharge plate 6.

[0026] The extrusion mechanism 7 includes a limiting cylinder 70, a limiting rod 71, a spring 72, and an extrusion plate 73. The limiting cylinder 70 is disposed on the inner wall of the guide channel 5. The upper end of the limiting rod 71 is restricted to move within the limiting cylinder 70. The extrusion plate 73 is fixed to the lower end of the limiting rod 71. The spring 72 is restricted between the extrusion plate 73 and the limiting cylinder 70. The two edges of the extrusion plate 73 can contact the upper edge of the inlet end and the upper edge of the outlet end of the guide channel 5. Figure 4-6As shown, the extrusion plate 73 in the extrusion mechanism 7 allows lithium to smoothly transition from the inlet end of the guide channel 5 to the outlet end of the guide channel 5. Simultaneously, since the lithium entering the guide channel 5 may have uneven hardness, the lithium can cause the extrusion plate 73 to float vertically, resulting in a certain degree of buffered dynamic change during the lithium forming process. Preferably, the side of the extrusion plate 73 that contacts the lithium is a smooth surface, making the surface of the lithium smoother when pressed into a strip structure, reducing subsequent reprocessing. It should be noted that, to avoid thermal fatigue and elastic decay of the spring 72 due to prolonged exposure to high temperatures, a high-temperature alloy spring (such as Inconel alloy) is preferably used.

[0027] The lithium dispensing plate 6 includes a connecting plate 60 and several sets of shaping plates 61. The connecting plate 60 has several lithium dispensing ports 600 and is connected to the outlet ends of several sets of guide channels 5. The lithium dispensing ports 600 are aligned with the outlet ends of the guide channels 5. The shaping plates 61 are connected to the edges of the lithium dispensing ports 600. Preferably, the shaping plates 61 are detachably confined to the connecting plate 60. Figure 4 and Figure 6 As shown, the thickness and width of the extruded lithium strip can be changed by replacing the shaping plate 61 of different sizes. The installation and disassembly of the shaping plate 61 are relatively convenient, and the device has strong adaptability.

[0028] The connecting frame 4 includes two sets of semi-ring limiting plates 40 and two sets of bolts 41. The two sets of semi-ring limiting plates 40 can enclose the inlet ends of several sets of guide channels 5. The upper and lower ends of the semi-ring limiting plates 40 are respectively provided with connecting holes, and the bolts 41 can pass through the two semi-ring limiting plates 40 to restrict the semi-ring limiting plates 40 at the discharge port 11. Figure 3-4 As shown, a sealing strip is preferably provided on the contact surface between the semi-ring limiting plate 40 and the inlet end of the guide channel 5 and the outlet 11 end of the heating chamber 1. The sealing strip can withstand high temperature and prevent the outlet 11 from melting due to excessive temperature.

[0029] The limiting cylinder 70 in the extrusion mechanism 7 is detachably connected to the inner wall of the guide channel 5. To facilitate cleaning of the device, the extrusion mechanism 7, the lithium output plate 6, and the guide channel 5 can all be disassembled individually, reducing the presence of lithium debris in the components and thus increasing the stability of subsequent lithium strip extrusion molding.

[0030] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A novel multi-outlet lithium belt extrusion press, characterized in that, The device includes a heating chamber (1), a spiral body (2), a motor (3), a connecting frame (4), several guide channels (5), and several lithium-extrusion plates (6). The heating chamber (1) is a hollow structure. The top of the heating chamber (1) is provided with a feed inlet (10), and one end of the heating chamber (1) is provided with a discharge outlet (11). The spiral body (2) is coaxially arranged inside the heating chamber (1). The output shaft of the motor (3) passes through the heating chamber (1) and is connected to one end of the spiral body (2). The inlet ends of several sets of guide channels (5) are connected to the discharge outlet (11) through the connecting frame (4). An extrusion mechanism (7) is provided inside the guide channels (5). The lithium-extrusion plates (6) are connected to the outlet end of the guide channels (5). The motor (3) drives the spiral body (2) to drive the molten lithium ingots in the heating chamber (1) into the guide channels (5), and then extrudes them into a strip structure through the lithium-extrusion plates (6).

2. The novel multi-outlet lithium belt extrusion press according to claim 1, characterized in that, The height of the outlet (11) is less than the height of the inlet end of the guide channel (5), and the height of the inlet end of the guide channel (5) is greater than the height of the outlet end of the guide channel (5).

3. A novel multi-outlet lithium belt extrusion press according to claim 2, characterized in that, The extrusion mechanism (7) includes a limiting cylinder (70), a limiting rod (71), a spring (72), and an extrusion plate (73). The limiting cylinder (70) is disposed on an inner wall of the guide channel (5). The upper end of the limiting rod (71) restricts movement within the limiting cylinder (70). The extrusion plate (73) is fixed to the lower end of the limiting rod (71). The spring (72) restricts movement between the extrusion plate (73) and the limiting cylinder (70). The two sides of the extrusion plate (73) can contact the upper edge of the inlet end of the guide channel (5) and the upper edge of the outlet end of the guide channel (5).

4. A novel multi-outlet lithium belt extrusion press according to claim 1, characterized in that, The lithium-discharging plate (6) includes a connecting plate (60) and several sets of shaping plates (61). Several lithium outlets (600) are provided on the connecting plate (60). The connecting plate (60) is connected to the outlet end of several sets of the guide grooves (5). The lithium outlets (600) are aligned with the outlet end of the guide grooves (5). The shaping plates (61) are connected to the edge of the lithium outlets (600).

5. A novel multi-outlet lithium belt extrusion press according to claim 4, characterized in that, The shaping plate (61) is detachably restricted to the connecting plate (60).

6. A novel multi-outlet lithium belt extrusion press according to claim 1, characterized in that, The connecting frame (4) includes two sets of semi-ring limiting plates (40) and two sets of bolts (41). The two sets of semi-ring limiting plates (40) can enclose the inlet ends of several sets of the guide channels (5). The upper and lower ends of the semi-ring limiting plates (40) are respectively provided with connecting holes. The bolts (41) can pass through the two semi-ring limiting plates (40) to restrict the semi-ring limiting plates (40) to the discharge port (11).

7. A novel multi-outlet lithium belt extrusion press according to claim 3, characterized in that, The limiting cylinder (70) in the extrusion mechanism (7) is detachably connected to the inner wall of the guide groove (5).

8. A novel multi-outlet lithium belt extrusion press according to claim 3, characterized in that, The side of the extrusion plate (73) that contacts lithium is set to a smooth surface.

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