Lithium ribbon extrusion outlet adjustment device

Abstract

This invention relates to the field of lithium metal production technology, specifically to a lithium strip extrusion outlet adjustment device. It includes a mounting base and two opposing thickness adjustment molds. Two width adjustment molds are also positioned opposite each other on the same side of the two thickness adjustment molds, forming an extrusion outlet between them. The mounting base is equipped with a first driving mechanism and a second driving mechanism. The first driving mechanism drives the two thickness adjustment molds to move relative to each other, and the second driving mechanism drives the two width adjustment molds to move relative to each other. The relative movement direction of the two thickness adjustment molds is perpendicular to the relative movement direction of the two width adjustment molds. This invention, by providing a first driving mechanism and a second driving mechanism on the mounting base to drive the relative movement of the two thickness adjustment molds, achieves rapid adjustment of the extrusion outlet shape, making the adjustment of the extrusion outlet width and height more convenient.

Description

Technical Field

[0001] This invention relates to the field of lithium metal production technology, specifically to a lithium strip extrusion outlet adjustment device. Background Technology

[0002] Currently, lithium metal, as an ideal negative electrode material for lithium batteries, is often processed into lithium strips. The main method for processing lithium strips is extrusion, which uses high pressure to force lithium ingots in an extrusion tube through a specific combination of dies to process lithium strips of different thicknesses and widths, such as the lithium strip width extrusion device mentioned in Chinese invention patent CN217990637U.

[0003] Chinese invention patent CN213162489U discloses a die for processing lithium strips with adjustable thickness and width, including a base plate. A fixing plate is provided on the upper outer surface of the base plate, and a rotating shaft is provided on the lower outer surface of the fixing plate. A through hole is provided at the outer end of the rotating shaft, and a limiting block is provided on the lower outer surface of the through hole. A first tension plate is provided at the inner end of the limiting block. A first elongated hole is provided on the upper outer surface of the first tension plate, and an internal hexagonal locating nut is provided on the upper outer surface of the first elongated hole. A second elongated hole is provided on the lower outer surface of the internal hexagonal locating nut corresponding to the lower outer surface of the first elongated hole, and a second tension plate is provided on the outer surface of the second elongated hole.

[0004] The above-mentioned device can control the width and thickness of the lithium strip by adjusting the width and height of the lithium strip extrusion nozzle, but some problems still exist in its use:

[0005] Adjusting the extrusion port requires loosening the nut and then adjusting the relative positions of the first and second stretching plates, which is very tedious. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a lithium strip extrusion outlet adjustment device that facilitates the adjustment of the extrusion outlet width and height.

[0007] The technical solution adopted by the present invention to solve its technical problem is a lithium strip extrusion outlet adjustment device, including a mounting base and two thickness adjustment molds arranged opposite each other. Two width adjustment molds are arranged opposite each other on the same side of the two thickness adjustment molds, and an extrusion outlet is formed between the two thickness adjustment molds and the two width adjustment molds. The mounting base is provided with a first driving mechanism and a second driving mechanism. The first driving mechanism is used to drive the two thickness adjustment molds to move relative to each other, and the second driving mechanism is used to drive the two width adjustment molds to move relative to each other. The relative movement direction of the two thickness adjustment molds is perpendicular to the relative movement direction of the two width adjustment molds.

[0008] Furthermore, the mounting base includes two first mounting blocks and two second mounting blocks. The two thickness adjustment molds are disposed between the two first mounting blocks, and the two second mounting blocks are disposed between the two thickness adjustment molds. The first driving mechanism is disposed between the first mounting blocks and the thickness adjustment molds, and is fixedly connected to the first mounting blocks and the thickness adjustment molds respectively. The second driving mechanism is disposed between the second mounting blocks and the width adjustment molds, and is fixedly connected to the second mounting blocks and the width adjustment molds respectively.

[0009] Furthermore, a third driving mechanism is provided between the second mounting block and the thickness adjustment mold. The third driving mechanism is opposite to the first driving mechanism and is fixedly connected to both the thickness adjustment mold and the second mounting block.

[0010] Furthermore, the first drive mechanism, the second drive mechanism, and the third drive mechanism are all hydraulic cylinders.

[0011] Furthermore, the second mounting block is provided with mounting holes, and the third driving mechanism is disposed in the mounting holes.

[0012] Furthermore, a first displacement sensor is provided on both thickness adjustment molds, and a second displacement sensor is provided on both width adjustment molds.

[0013] Furthermore, it also includes a control system for controlling the movement of the first drive mechanism, the second drive mechanism, and the third drive mechanism.

[0014] Furthermore, a guide plate is provided on the outer side of the width adjustment mold. The guide plate is fixedly connected to the first mounting block and the second mounting block. The guide plate is provided with a guide hole, which communicates with the extrusion port. The thickness adjustment mold is attached to the guide plate. The guide plate is provided with a clearance groove for the width adjustment mold to pass through.

[0015] Furthermore, the thickness adjustment mold and the guide plate are connected by a guiding mechanism.

[0016] Furthermore, the guiding mechanism includes a first guide member and a second guide member. The first guide member is fixedly connected to the thickness adjustment mold, and the second guide member is fixedly connected to the guide plate. The first guide member can slide relative to the second guide member.

[0017] The beneficial effects of this invention are: by setting a first driving mechanism on the mounting base to drive the relative movement of two thickness adjustment molds and a second driving mechanism to drive the relative movement of two width adjustment molds, the shape of the extrusion nozzle is quickly adjusted, making the adjustment of the width and height of the extrusion nozzle more convenient. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 yes Figure 1 The front view;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 yes Figure 3 A partial sectional view;

[0022] Figure 5 This is a schematic diagram of the air deflector;

[0023] Figure 6 This is a schematic diagram of another embodiment of the present invention.

[0024] Reference numerals: 1-Mounting base; 2-First mounting block; 201-First driving mechanism; 3-Second mounting block; 301-Second driving mechanism; 302-Third driving mechanism; 4-Thickness adjustment mold; 401-First displacement sensor; 402-First guide; 5-Width adjustment mold; 501-Second displacement sensor; 6-Extrusion port; 7-Guide plate; 701-Guide hole; 702-Allowing groove; 703-Second guide. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figures 1-5 As shown, the lithium strip extrusion outlet adjustment device of the present invention includes a mounting base 1 and two thickness adjustment molds 4 arranged opposite each other. Two width adjustment molds 5 are arranged opposite each other on the same side of the two thickness adjustment molds 4, and an extrusion outlet 6 is formed between the two thickness adjustment molds 4 and the two width adjustment molds 5. The mounting base 1 is provided with a first driving mechanism 201 and a second driving mechanism 301. The first driving mechanism 201 is used to drive the two thickness adjustment molds 4 to move relative to each other, and the second driving mechanism 301 is used to drive the two width adjustment molds 5 to move relative to each other. The relative movement direction of the two thickness adjustment molds 4 is perpendicular to the relative movement direction of the two width adjustment molds 5.

[0027] The mounting base 1 is used to install the thickness adjustment mold 4 and the width adjustment mold 5. The mounting base 1 can be a frame structure. In use, the mounting base 1 is installed at the outlet of the extrusion tube, or at the outlet of other lithium strips produced by extrusion. The thickness adjustment mold 4 is rectangular, and the width adjustment mold 5 is rectangular. The width of the width adjustment mold 5 should be greater than the maximum distance between the two thickness adjustment molds 4. The thickness adjustment molds 4 and the width adjustment molds 5 are in close contact. The relative movement direction of the two thickness adjustment molds 4 is perpendicular to the relative movement direction of the two width adjustment molds 5. For example, the two thickness adjustment molds 4 are arranged vertically, and the two width adjustment molds 5 are arranged horizontally, or the two thickness adjustment molds 4 are arranged front and back, and the two width adjustment molds 5 are arranged horizontally. The extrusion port 6... The shape is elongated. The distance between the two thickness adjustment dies 4 determines the height of the extrusion nozzle 6, and the distance between the two width adjustment dies 5 determines the width of the extrusion nozzle 6. The first drive mechanism 201 and the second drive mechanism 301 can be electric push rods. The first drive mechanism 201 drives the two thickness adjustment dies 4 to move relative to each other, so that the distance between the two thickness adjustment dies 4 changes. In this way, the height of the extrusion nozzle 6 can be adjusted, thereby controlling the thickness of the lithium strip extruded from the extrusion nozzle 6. Similarly, the second drive mechanism 301 drives the two width adjustment dies 5 to move relative to each other, so that the distance between the two width adjustment dies 5 changes. In this way, the width of the extrusion nozzle 6 can be adjusted, thereby controlling the width of the lithium strip extruded from the extrusion nozzle 6. It should be noted that the relative movement of the two thickness adjustment molds 4 can be achieved in several ways. For example, one thickness adjustment mold 4 can be fixed on the mounting base 1, and the first drive mechanism 201 can be mounted on the mounting base 1 to drive the other thickness adjustment mold 4 to move, thus achieving relative movement of the two thickness adjustment molds 4. Similarly, the two thickness adjustment molds 4 can both move relative to each other, that is, the first drive mechanism 201 can be provided between both thickness adjustment molds 4 and the mounting base 1, which can also achieve relative movement of the two thickness adjustment molds 4. The relative movement of the two width adjustment molds 5 can also be achieved in several ways. For example, one width adjustment mold 5 can be fixed on the mounting base 1, and the second drive mechanism 301 can be mounted on the mounting base 1 to drive the other width adjustment mold 5 to move, thus achieving relative movement of the two width adjustment molds 5. Similarly, the two width adjustment molds 5 can both move relative to each other, that is, the second drive mechanism 301 can be provided between both width adjustment molds 5 and the mounting base 1, which can also achieve relative movement of the two width adjustment molds 5.

[0028] Further, see Figure 1 and Figure 2In one embodiment, the mounting base 1 includes two first mounting blocks 2 and two second mounting blocks 3. Two thickness adjustment molds 4 are disposed between the two first mounting blocks 2, and two second mounting blocks 3 are disposed between the two thickness adjustment molds 4. The first driving mechanism 201 is disposed between the first mounting blocks 2 and the thickness adjustment molds 4, and is fixedly connected to the first mounting blocks 2 and the thickness adjustment molds 4 respectively. The second driving mechanism is disposed between the second mounting blocks 3 and the width adjustment molds 5, and is fixedly connected to the second mounting blocks 3 and the width adjustment molds 5 respectively.

[0029] The first mounting block 2 is elongated and is used to mount the first drive mechanism 201. To ensure stability, two first drive mechanisms 201 can be mounted on the first mounting block 2, respectively mounted near the two ends of the thickness adjustment mold 4. The first drive mechanism 201 and the first mounting block 2 can be bolted together. If the first drive mechanism 201 and the first mounting block 2 are made of steel, they can also be welded together. Similarly, the first drive mechanism 201 and the thickness adjustment mold 4 can be bolted together. If the first drive mechanism 201 and the thickness adjustment mold 4 are made of steel, they can also be welded together. The second drive mechanism 301 and the width adjustment mold 5 can be bolted together. If the second drive mechanism 301 and the width adjustment mold 5 are made of steel, they can also be welded together. Similarly, the second drive mechanism 301 and the second mounting base 1 can be bolted together. If the second drive mechanism 301 and the second mounting base 1 are both made of steel, they can also be welded together.

[0030] To further improve the stability of the thickness adjustment mold 4, see [link to relevant documentation]. Figure 3 and Figure 4A third driving mechanism 302 is provided between the second mounting block 3 and the thickness adjustment mold 4. The third driving mechanism 302 is opposite to the first driving mechanism 201 and is fixedly connected to both the thickness adjustment mold 4 and the second mounting block 3. The third driving mechanism 302 and the thickness adjustment mold 4 can be connected by bolts. If both are made of steel, they can also be connected by welding. Similarly, the third driving mechanism 302 and the second mounting base 1 can be connected by bolts. If both are made of steel, they can also be connected by welding. The relative arrangement of the first drive mechanism 201 and the third drive mechanism 302 means that their extension and retraction directions are opposite. Specifically, when the first drive mechanism 201 extends, it presses down on the thickness adjustment mold 4, while the third drive mechanism 302 retracts, pressing against the thickness adjustment mold 4. Conversely, when the third drive mechanism 302 extends, it lifts the thickness adjustment mold 4, while the first drive mechanism 201 retracts, pulling the thickness adjustment mold 4 upwards. This arrangement improves the stability of the thickness adjustment mold 4 under the combined action of the first drive mechanism 201 and the third drive mechanism 302. It is also important to note that during operation, the downward pressure of the first drive mechanism 201 must be equal to the lifting force of the third drive mechanism 302 and the lifting force when the lithium ingot is extruded from the extrusion port 6.

[0031] Furthermore, as a preferred embodiment, the first drive mechanism 201, the second drive mechanism 301, and the third drive mechanism 302 are all hydraulic cylinders. Since hydraulic devices are often used to extrude lithium ingots from the extrusion barrel, hydraulic cylinders are used as the drive mechanisms here.

[0032] To further reduce the space occupied by the installation of the third drive mechanism 302, see [further details]. Figure 4 The second mounting block 3 is provided with a mounting hole, and the third drive mechanism 302 is disposed in the mounting hole. It should be noted that the axis of the mounting hole and the axis of the third drive mechanism 302 are coaxial; alternatively, the second mounting block 3 after the mounting hole is manufactured can be directly used as the cylinder seat of the hydraulic cylinder, and the piston of the hydraulic cylinder can be disposed in the mounting hole, which can reduce the overall size of the third drive mechanism 302.

[0033] To further understand the distance between the two thickness adjustment molds 4 and the two width adjustment molds 5 in real time, see [link to further details]. Figure 1 and Figure 2Two thickness adjustment molds 4 are equipped with first displacement sensors 401, and two width adjustment molds 5 are equipped with second displacement sensors 501. Both the first displacement sensors 401 and the second displacement sensors 501 can be KJT-WJ12 analog displacement sensors. The first displacement sensor 401 can be glued to the thickness adjustment mold 4, or a groove can be made in the thickness adjustment mold 4 and the first displacement sensor 401 can be placed in the groove. Similarly, the second displacement sensor 501 can be glued to the width adjustment mold 5, or a groove can be made in the width adjustment mold 5 and the second displacement sensor 501 can be placed in the groove. The distance between the two first displacement sensors 401 and the sum of the distances from the two first displacement sensors 401 to the boundary of the extrusion port 6 is the height of the extrusion port 6. The distance between the two second displacement sensors 501 and the sum of the distances from the two second displacement sensors 501 to the boundary of the extrusion port 6 is the width of the extrusion port 6. By setting the first displacement sensors 401 and the second displacement sensors 501, the height and width of the extrusion port 6 can be monitored in real time.

[0034] To better control the thickness and width of the lithium strip extruded from the extrusion port 6, a control system is further included. This control system controls the movement of the first drive mechanism 201, the second drive mechanism 301, and the third drive mechanism 302. The control system can be a PLC or a microcontroller. When the height of the extrusion port 6 needs adjustment, the control system controls the movement of the first drive mechanism 201 and the third drive mechanism 302. When the width of the extrusion port 6 needs adjustment, the control system controls the movement of the second drive mechanism 301. Simultaneously, based on the values ​​from the first displacement sensor 401 and the second displacement sensor 501, the control system determines the distance that the first drive mechanism 201, the second drive mechanism 301, and the third drive mechanism 302 should move, respectively.

[0035] To ensure that the compressed lithium ingot can better enter the extrusion port 6, further, see... Figure 5 and Figure 6 The width adjustment mold 5 is provided with a guide plate 7 on its outer side. The guide plate 7 is fixedly connected to the first mounting block 2 and the second mounting block 3. The guide plate 7 is provided with a guide hole 701, which communicates with the extrusion port 6. The thickness adjustment mold 4 is fitted with the guide plate 7. The guide plate 7 is provided with a clearance groove 702 for the width adjustment mold 5 to pass through.

[0036] The guide plate 7 can be made of steel plate. When in use, the guide plate 7 needs to be installed at the outlet of the extrusion barrel. The guide plate 7 is fixedly connected to the first mounting block 2 and the second mounting block 3. The fixed connection can be made by bolts or integral molding. The guide hole 701 plays a role in guiding the extruded ingot, ensuring that the extruded ingot can enter the extrusion port 6. The outer dimension of the guide hole 701 is larger than the maximum outer dimension of the extrusion port 6. The guide hole 701 is connected to the extrusion port 6, so that the extruded ingot can directly enter the extrusion port 6 for forming operation. In order to prevent the lithium ingot from overflowing from the gap between the thickness adjustment mold 4 and the guide plate 7, the thickness adjustment mold 4 and the guide plate 7 are fitted together. The outer dimension of the clearance groove 702 is the same as the outer dimension of the width adjustment mold 5, which facilitates the movement of the width adjustment mold 5 in the clearance groove 702.

[0037] To ensure a tighter fit between the thickness adjustment mold 4 and the guide plate 7, further see... Figure 5 and Figure 6 The thickness adjustment mold 4 and the guide plate 7 are connected by a guiding mechanism. The guiding mechanism includes a first guide member 402 and a second guide member 703. The first guide member 402 is fixedly connected to the thickness adjustment mold 4, and the second guide member 703 is fixedly connected to the guide plate 7. The first guide member 402 can slide relative to the second guide member 703.

[0038] The first guide 402 can be a dovetail groove, and the second guide 703 can be a dovetail block used in conjunction with the dovetail groove; or the first guide 402 can be a dovetail block, and the second guide 703 can be a dovetail groove used in conjunction with the dovetail block. Here, both the dovetail groove and the dovetail block need to be set along the moving direction of the thickness adjustment mold 4, so that the dovetail block can slide up and down in the dovetail groove.

[0039] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A lithium strip extrusion outlet adjustment device, comprising a mounting base (1) and two opposing thickness adjustment molds (4), wherein two width adjustment molds (5) are arranged opposite each other on the same side of the two thickness adjustment molds (4), and an extrusion outlet (6) is formed between the two thickness adjustment molds (4) and the two width adjustment molds (5), characterized in that: The mounting base (1) is provided with a first driving mechanism (201) and a second driving mechanism (301). The first driving mechanism (201) is used to drive two thickness adjustment molds (4) to move relative to each other, and the second driving mechanism (301) is used to drive two width adjustment molds (5) to move relative to each other. The relative movement direction of the two thickness adjustment molds (4) is perpendicular to the relative movement direction of the two width adjustment molds (5). The mounting base (1) includes two first mounting blocks (2) and two second mounting blocks (3). The two thickness adjustment molds (4) are disposed between the two first mounting blocks (2), and the two second mounting blocks (3) are disposed between the two thickness adjustment molds (4). The first driving mechanism (201) is disposed between the first mounting blocks (2) and the thickness adjustment molds (4), and is fixedly connected to the first mounting blocks (2) and the thickness adjustment molds (4) respectively. The second drive mechanism (301) is disposed between the second mounting block (3) and the width adjustment mold (5), and is fixedly connected to the second mounting block (3) and the width adjustment mold (5) respectively; a third drive mechanism (302) is disposed between the second mounting block (3) and the thickness adjustment mold (4), the third drive mechanism (302) is opposite to the first drive mechanism (201), the extension and retraction directions of the first drive mechanism (201) and the third drive mechanism (302) are opposite, and the third drive mechanism (302) is fixedly connected to the thickness adjustment mold (4) and the second mounting block (3) respectively; the first drive mechanism (201), the second drive mechanism (301) and the third drive mechanism (302) are all hydraulic cylinders; a first displacement sensor (401) is disposed on the two thickness adjustment molds (4), and a second displacement sensor (501) is disposed on the two width adjustment molds (5).

2. The lithium strip extrusion outlet adjustment device as described in claim 1, characterized in that: The second mounting block (3) is provided with a mounting hole, and the third driving mechanism (302) is disposed in the mounting hole.

3. The lithium strip extrusion outlet adjustment device as described in claim 1, characterized in that: It also includes a control system for controlling the movement of the first drive mechanism (201), the second drive mechanism (301) and the third drive mechanism (302).

4. The lithium strip extrusion outlet adjustment device according to any one of claims 1-3, characterized in that: The width adjustment mold (5) is provided with a guide plate (7) on its outer side. The guide plate (7) is fixedly connected to the first mounting block (2) and the second mounting block (3). The guide plate (7) is provided with a guide hole (701) which is connected to the extrusion port. The thickness adjustment mold (4) is fitted with the guide plate (7). The guide plate (7) is provided with a clearance groove (702) for the width adjustment mold (5) to pass through.

5. The lithium strip extrusion outlet adjustment device as described in claim 4, characterized in that: The thickness adjustment mold (4) and the guide plate (7) are connected by a guiding mechanism.

6. The lithium strip extrusion outlet adjustment device as described in claim 5, characterized in that: The guiding mechanism includes a first guide (402) and a second guide (703). The first guide (402) is fixedly connected to the thickness adjustment mold (4), and the second guide (703) is fixedly connected to the guide plate (7). The first guide (402) can slide relative to the second guide (703).

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