Extrusion and winding device for synchronously preparing multiple lithium strips

Abstract

The utility model discloses an extruding and winding device for synchronously preparing a plurality of lithium strips, which relates to the field of lithium strip preparation and comprises an extruding material cylinder, a guide plate, a baffle plate, a width limiting sheet, an extruding die component and a lithium strip winding component are sequentially arranged at the discharging end of the extruding material cylinder, and a first lithium outlet is arranged in the middle of the guide plate. The thickness of the first lithium outlet is gradually reduced in the direction away from the extrusion cylinder, a second lithium outlet is formed in the middle of the striker plate, the thickness of the second lithium outlet is smaller than that of the end opening of the tail end of the first lithium outlet, a plurality of third lithium outlets are formed in the middle of the extrusion die assembly, and the thickness of the third lithium outlets is smaller than that of the second lithium outlet. Solid-state lithium metal provided by the extrusion cylinder is extruded by the first lithium outlet, the second lithium outlet and the third lithium outlet in sequence to form a plurality of lithium strips, and the lithium strips are wound and laminated through the lithium strip winding assembly. According to the utility model, the synchronous extruding and winding operation of a plurality of lithium strips is realized, and meanwhile, the extruding width and thickness of the lithium strips can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium band preparation field especially synchronously prepares a kind of extrusion and winding device of multiple lithium bands. BACKGROUND

[0002] Lithium band has extensive and important application in many fields, such as lithium ion battery, solid-state battery, aerospace equipment power supply, military equipment power supply, propellant, medical instrument power supply, physical experiment research material, electronic component manufacturing material and heat management field etc.However, existing lithium band extrusion die combination device often appears unable to normally discharge even unable to extrude lithium band forming in extrusion process, and only one lithium band can be prepared each time, which seriously reduces the production capacity of lithium band.

[0003] Therefore, how to develop a kind of extrusion and winding device of multiple lithium bands is prepared synchronously, realizes the synchronous extrusion winding operation of multiple lithium bands, and simultaneously, the extrusion width and thickness of lithium band can be adjusted, which becomes the technical problem to be solved by the personnel in the field. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of extrusion and winding device of multiple lithium bands is prepared synchronously, realizes the synchronous extrusion winding operation of multiple lithium bands, and simultaneously, the extrusion width and thickness of lithium band can be adjusted.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme:

[0006] The utility model discloses a kind of extrusion and winding device of multiple lithium bands is prepared synchronously, including extrusion cylinder, it is characterized by: the discharge end of the extrusion cylinder is sequentially provided with flow guide plate, baffle, width limiting piece, extrusion die assembly and lithium band winding assembly, the middle part of the flow guide plate is provided with first lithium outlet, the thickness of the first lithium outlet gradually decreases along the direction away from the extrusion cylinder, the middle part of the baffle is provided with second lithium outlet, the thickness of the second lithium outlet is less than the thickness of the first lithium outlet end port, the middle part of the extrusion die assembly is provided with multiple third lithium outlet, the thickness of the third lithium outlet is less than the thickness of the second lithium outlet, solid-state lithium metal provided by the extrusion cylinder is sequentially extruded through the first lithium outlet, second lithium outlet and third lithium outlet and forms multiple lithium bands, the lithium band is laminated by the lithium band winding assembly.

[0007] Preferably, the extrusion module assembly comprises an upper extrusion module, a middle extrusion module, a lower extrusion module and a die base, the die base is bolted at the discharge end of the baffle plate, the upper extrusion module and the lower extrusion module are embedded in the mounting groove on the side of the die base close to the baffle plate, and the lithium strip discharge port is formed between the upper extrusion module and the lower extrusion module, and a plurality of middle extrusion modules arranged at equal intervals in the upper extrusion module and the lower extrusion module divide the lithium strip discharge port into a plurality of third lithium discharge ports.

[0008] Preferably, a long round hole for connecting a bolt is formed on the upper extrusion module and the lower extrusion module, the working end of the bolt is threaded through the long round hole and is screwed with the die base, and the upper extrusion module and the lower extrusion module are tightly connected in the mounting groove.

[0009] Preferably, a plurality of pressing bolts are arranged on one side of the long side of the die base, and the working end of the pressing bolt abuts against the upper extrusion module.

[0010] Preferably, the extrusion module assembly further comprises a die steel rod and a thickness sheet, the die steel rod is embedded in the first clamping groove formed on the short sides of the die base, the upper extrusion module, the middle extrusion module and the lower extrusion module.

[0011] The thickness sheet is clamped between the upper extrusion module and the middle extrusion module, between two middle extrusion modules or between the middle extrusion module and the lower extrusion module, used for adjusting the thickness of the third lithium discharge port, and the thickness of the thickness sheet is set to 0.01mm-6mm.

[0012] Preferably, the upper and lower faces of the middle extrusion module, the bottom face of the upper extrusion module and the top face of the lower extrusion module are set to an angle of 45°-60°, and the blade thickness is set to 0.05mm-0.2mm.

[0013] Preferably, the lithium strip winding assembly comprises a plurality of winding lines, each winding line comprises a lithium strip passing roller shaft, a tension controller, a deviation correcting device, a metering shaft, a winding shaft, a separator unwinding shaft and a separator passing roller shaft arranged in sequence along the lithium strip discharge direction.

[0014] Preferably, the number of winding lines matches the number of third lithium discharge ports.

[0015] Preferably, the diameter of the lithium strip passing roller shaft is less than or equal to 5mm.

[0016] Compared with the prior art, the beneficial technical effects of the present utility model are:

[0017] 1) The extrusion module assembly of the present utility model has a simple structure and is convenient to maintain, can realize synchronous extrusion operation of multiple lithium strips, and effectively improves the production efficiency of lithium strips.

[0018] 2) By selecting different thickness of the thickness sheet, the effective adjustment of the lithium strip extrusion thickness can be realized, and the needs of different customers for the lithium strip thickness are met;

[0019] 3) The synergistic effect of the tension controller and the deviation rectifying device realizes the constant tension control of the lithium strip, ensures the flat winding of the lithium strip, and improves the winding quality of the lithium strip;

[0020] 4) The setting of multiple winding shafts and diaphragm unwinding shafts can simultaneously wind multiple lithium strips and cover film protection, further improving the practicality of the device and the product quality of the lithium strip. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described below in combination with the drawings.

[0022] Figure 1 It is the whole structure schematic view of the utility model synchronous preparation multiple lithium strip's extrusion and winding device;

[0023] Figure 2 It is the utility model deflector structure schematic view;

[0024] Figure 3 It is the utility model baffle structure schematic view;

[0025] Figure 4 It is the utility model extrusion module assembly structure schematic view;

[0026] Figure 5 It is the utility model mold base structure schematic view;

[0027] Figure 6 It is the utility model upper extrusion module front view;

[0028] Figure 7 It is the utility model middle extrusion module side view;

[0029] Figure 8 It is the utility model lithium strip winding assembly structure schematic view.

[0030] The drawing mark explanation: 1, extrusion cylinder; 2, deflector; 21, first lithium outlet; 3, baffle; 31, second lithium outlet; 4, width limiting sheet; 5, extrusion module assembly; 51, third lithium outlet; 52, upper extrusion module; 53, middle extrusion module; 54, lower extrusion module; 55, mold base; 551, mounting groove; 552, press-down bolt; 56, long circular hole; 57, mold steel pole; 6, lithium strip winding assembly; 61, lithium strip passing roller shaft; 62, tension controller; 63, deviation rectifying device; 64, meter recording shaft; 65, winding shaft; 66, diaphragm unwinding shaft; 67, diaphragm passing roller shaft; 7, lithium strip. DETAILED DESCRIPTION

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0032] like Figures 1-8 As shown, an extrusion and winding device for simultaneously producing multiple lithium strips includes an extrusion cylinder 1. The extrusion cylinder 1 is characterized by the following features: a guide plate 2, a baffle plate 3, a width limiting plate 4, an extrusion die assembly 5, and a lithium strip winding assembly 6 are sequentially arranged at the discharge end of the extrusion cylinder 1. A first lithium outlet 21 is provided in the middle of the guide plate 2, and the thickness of the first lithium outlet 21 gradually decreases in the direction away from the extrusion cylinder 1. A second lithium outlet 31 is provided in the middle of the baffle plate 3, and the thickness of the second lithium outlet 31 is less than the thickness of the end port of the first lithium outlet 21. Multiple third lithium outlets 51 are provided in the middle of the extrusion die assembly 5, and the thickness of the third lithium outlets 51 is less than the thickness of the second lithium outlets 31. Solid lithium metal provided by the extrusion cylinder 1 is sequentially extruded through the first lithium outlet 21, the second lithium outlet 31, and the third lithium outlets 51 to form multiple lithium strips 7. The lithium strips 7 are wound and coated by the lithium strip winding assembly 6.

[0033] Specifically, the guide plate 2, baffle plate 3, and width limiting plate 4 in this utility model are existing structures, and can be referred to the relevant description in the patent (patent number: CN221361938U), which will not be repeated here.

[0034] Specifically, the first lithium outlet 21 has a straight section of the same thickness near the end port.

[0035] Specifically, the extrusion die assembly 5 includes an upper extrusion module 52, a middle extrusion module 53, a lower extrusion module 54, and a die base 55. The die base 55 is bolted to the discharge end of the baffle plate 3. The upper extrusion module 52 and the lower extrusion module 54 are both embedded in the mounting groove 551 opened on the side of the die base 55 near the baffle plate 3, and a lithium strip discharge port is formed between the upper extrusion module 52 and the lower extrusion module 54. A plurality of middle extrusion modules 53, which are equally spaced between the upper extrusion module 52 and the lower extrusion module 54, divide the lithium strip discharge port into a plurality of third lithium discharge ports 51.

[0036] Specifically, both the upper extrusion module 52 and the lower extrusion module 54 are provided with elongated holes 56 for connecting bolts. The working end of the bolt passes through the elongated hole 56 and is threadedly connected to the mold base 55, thereby fastening the upper extrusion module 52 and the lower extrusion module 54 in the mounting groove 551.

[0037] Specifically, the number of the long round holes 56 is set to at least two to improve the connection stability of the upper extrusion module 52 or the lower extrusion module 54 and the mold base 55.

[0038] Specifically, the long round holes 56 facilitate the user to adjust the positions of the upper extrusion module 52, the lower extrusion module 54 in the installation groove 551, and effectively adjust the width of the lithium strip discharge port.

[0039] Specifically, the long side of the mold base 55 is provided with a plurality of pressing bolts 552, and the working end of the pressing bolt 552 abuts against the upper extrusion module 52.

[0040] Specifically, the extrusion module assembly 5 further comprises a mold steel rod 57 and a thickness sheet, the mold steel rod 57 is embedded in the first clamping groove on the short side of the mold base 55, the upper extrusion module 52, the middle extrusion module 53 and the lower extrusion module 54.

[0041] The thickness sheet is clamped between the upper extrusion module 52 and the middle extrusion module 53, between two middle extrusion modules 53 or between the middle extrusion module 53 and the lower extrusion module 54, used for adjusting the thickness of the third lithium discharge port 51, and the thickness of the thickness sheet is set to 0.01mm-6mm.

[0042] Specifically, the pressing bolt 552 can be used to realize the extrusion stable connection between the upper extrusion module 52, the middle extrusion module 53, the lower extrusion module 54 and the thickness sheet.

[0043] Specifically, the mold steel rod 57 penetrates and connects the mold base 55, the upper extrusion module 52, the middle extrusion module 53 and the lower extrusion module 54, and plays a role in improving the connection stability of the extrusion module assembly 5.

[0044] Specifically, the user can adjust the extrusion thickness of the lithium strip 7 by selecting thickness sheets with different thicknesses.

[0045] Specifically, the blade angle of the upper and lower surfaces of the middle extrusion module 53, the bottom surface of the upper extrusion module 52 and the top surface of the lower extrusion module 54 is set to 45°-60°, and the blade thickness is set to 0.05mm-0.2mm.

[0046] Specifically, the upper and lower surfaces of the middle extrusion module 53 are mirror polished, which can effectively reduce the friction with the lithium strip 7.

[0047] Specifically, the lithium ribbon winding assembly 6 includes a plurality of winding lines, each of which includes a lithium ribbon passing roller shaft 61, a tension controller 62, a deviation rectifying device 63, a meter recording shaft 64, a winding shaft 65, a separator unwinding shaft 66, and a separator passing roller shaft 67 arranged in sequence along the discharge direction of the lithium ribbon 7.

[0048] Specifically, the lithium ribbon passing roller shaft 61 has two main functions: one is to support the lithium ribbon 7 and prevent it from sagging or deforming due to its own gravity during movement; the other is to guide the lithium ribbon 7 to transmit smoothly forward and ensure its position stability in the subsequent processing.

[0049] Specifically, the lithium ribbon passing roller shaft 61 can move in the vertical direction, which helps to adapt to the transmission needs of lithium ribbons 7 of different thicknesses, ensures that the lithium ribbon 7 always maintains appropriate tension and contact state on the lithium ribbon passing roller shaft 61, and plays a role in smoothing the lithium ribbon 7.

[0050] Specifically, the tension controller 62 can achieve constant tension control of the lithium ribbon. When the lithium ribbon tension is detected to be too large, the tension controller 62 will appropriately reduce the tension; when the tension is too small, it will increase the tension, so as to ensure that the lithium ribbon always maintains constant tension during the entire movement process, prevents the lithium ribbon from stretching and deforming due to uneven tension, and ensures the quality and flatness of the lithium ribbon.

[0051] Specifically, the deviation rectifying device 63 is used to correct the position of the lithium ribbon, so as to ensure that the lithium ribbon can continue to transmit along the predetermined path accurately, prevent the lithium ribbon from colliding or rubbing with other parts of the equipment due to deviation, and thus affect the quality of the lithium ribbon.

[0052] Specifically, the meter recording shaft 64 is used to record the length of the wound lithium ribbon. The meter recording shaft 64 rotates through contact with the lithium ribbon 7, converts the movement of the lithium ribbon into its own rotational movement, and accurately records the number of revolutions and other data through the internal counting device, and then calculates the length of the wound lithium ribbon.

[0053] Specifically, the winding shaft 65 is used to wind the lithium ribbon, and the separator unwinding shaft 66 is used to release the separator material. After the separator material is released from the separator unwinding shaft 66, it converges with the lithium ribbon in the winding process at the winding shaft 65 through the separator passing roller shaft 67, and the separator covers the lithium ribbon, playing a role in protecting the lithium ribbon, preventing the lithium ribbon from being eroded by the external environment (such as air, moisture, etc.) after winding, prolonging the shelf life of the lithium ribbon, and maintaining the performance stability of the lithium ribbon.

[0054] Specifically, the number of winding lines matches the number of third lithium outlets 51.

[0055] Specifically, the diameter of the lithium ribbon passing roller shaft 61 is less than or equal to 5 mm.

[0056] The utility model discloses a synchronous preparation multiple lithium belt's extruding and winding device, simple structure, convenient to use, realize the synchronous extrusion winding operation of multiple lithium belt, simultaneously, adjustable lithium belt's extrusion width and thickness.

[0057] It should be noted that the relational terms herein, such as first and second, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0058] The above-described embodiments are merely preferred modes of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements to the technical solutions of the utility model made by those skilled in the art shall fall within the protection scope defined by the claims of the utility model.

Claims

1. An apparatus for the simultaneous production of a plurality of lithium ribbons, comprising an extrusion cylinder (1), characterized in that: The discharge end of the extrusion cylinder (1) is sequentially provided with a flow guide plate (2), a material blocking plate (3), a width limiting piece (4), an extrusion die assembly (5) and a lithium ribbon winding assembly (6), the middle part of the flow guide plate (2) is provided with a first lithium outlet (21), the thickness of the first lithium outlet (21) gradually decreases away from the extrusion cylinder (1), the middle part of the material blocking plate (3) is provided with a second lithium outlet (31), the thickness of the second lithium outlet (31) is smaller than the thickness of the end port of the first lithium outlet (21), the middle part of the extrusion die assembly (5) is provided with a plurality of third lithium outlets (51), the thickness of the third lithium outlet (51) is smaller than the thickness of the second lithium outlet (31), the solid lithium metal provided by the extrusion cylinder (1) sequentially passes through the extrusion of the first lithium outlet (21), the second lithium outlet (31) and the third lithium outlet (51) to form a plurality of lithium ribbons (7), and the lithium ribbon (7) is wound with a film through the lithium ribbon winding assembly (6).

2. The apparatus for simultaneously producing a plurality of lithium ribbons by extrusion and winding according to claim 1, wherein: The extrusion die assembly (5) comprises an upper extrusion module (52), a middle extrusion module (53), a lower extrusion module (54) and a die base (55), the die base (55) is installed on the discharge end of the material blocking plate (3) through bolts, the upper extrusion module (52) and the lower extrusion module (54) are embedded in the installation groove (551) opened on the side of the die base (55) close to the material blocking plate (3), and the lithium ribbon discharge port is formed between the upper extrusion module (52) and the lower extrusion module (54), and a plurality of middle extrusion modules (53) arranged at equal intervals in the middle of the upper extrusion module (52) and the lower extrusion module (54) divide the lithium ribbon discharge port into a plurality of third lithium outlets (51).

3. The apparatus for simultaneously producing a plurality of lithium ribbons according to claim 2, wherein: The upper extrusion module (52) and the lower extrusion module (54) are both provided with an oblong hole (56) for connecting bolts, the working end of the bolt penetrates through the oblong hole (56) and is threadedly connected with the die base (55), and the upper extrusion module (52) and the lower extrusion module (54) are tightly connected in the installation groove (551).

4. The apparatus for simultaneously producing a plurality of lithium ribbons according to claim 3, wherein: The long side of the die base (55) is provided with a plurality of pressing bolts (552), the working end of the pressing bolt (552) abuts against the upper extrusion module (52).

5. The apparatus for simultaneously producing a plurality of lithium ribbons according to claim 4, wherein: The extrusion die assembly (5) further comprises a die steel rod (57) and a thickness piece, the die steel rod (57) is embedded in the first clamping groove opened on the short sides of the die base (55), the upper extrusion module (52), the middle extrusion module (53) and the lower extrusion module (54); The thickness piece is clamped between the upper extrusion module (52) and the middle extrusion module (53), between two middle extrusion modules (53) or between the middle extrusion module (53) and the lower extrusion module (54), used for adjusting the thickness of the third lithium outlet (51), and the thickness of the thickness piece is set to 0.01mm-6mm.

6. The apparatus for simultaneously producing a plurality of lithium ribbons according to claim 5, wherein: The edge angle of the upper and lower surfaces of the middle extrusion module (53), the bottom surface of the upper extrusion module (52) and the top surface of the lower extrusion module (54) is set to 45-60°, and the edge thickness is set to 0.05-0.2 mm.

7. The apparatus according to claim 1, wherein: The lithium ribbon winding assembly (6) comprises a plurality of winding lines, each of which comprises, in sequence along the discharge direction of the lithium ribbon (7), a lithium ribbon passing roller shaft (61), a tension controller (62), a deviation rectifying device (63), a meter recording shaft (64), a winding shaft (65), a separator unwinding shaft (66) and a separator passing roller shaft (67).

8. The apparatus according to claim 7, wherein: The number of winding lines matches the number of third lithium outlets (51).

9. The apparatus for simultaneously producing a plurality of lithium ribbons according to claim 8, wherein: The diameter of the lithium ribbon passing roller shaft (61) is less than or equal to 5 mm.

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