Lithium profile extrusion forming device

Abstract

The utility model relates to the technical field of lithium profile processing, in particular to a lithium profile extrusion forming device. The device comprises a transversely-arranged extrusion cylinder, an extrusion cavity is formed in the extrusion cylinder, an extrusion part is arranged in the extrusion cavity, an extrusion push rod is arranged at one end of the extrusion cavity, a forming mold is arranged at the other end of the extrusion cavity, and a discharging opening communicated with the extrusion cavity is formed in the forming mold; the extrusion part is connected to the telescopic end of the extrusion push rod; the extrusion part is provided with a hole cleaning part protruding in the direction of the discharging port. When the extrusion part abuts against the forming die, the hole cleaning part penetrates through the discharging port, and a gap is formed between the hole cleaning part and the side wall of the discharging port. The hole cleaning part is arranged on the extrusion part, so that the device automatically ejects part of lithium materials accumulated in the discharge port when the extrusion forming operation is finished, the smoothness of the discharge port is ensured, the production process is saved, the manpower is saved, the production safety coefficient is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium profile processing, in particular to a lithium profile extrusion molding device. Background Art

[0002] With the rapid development of the new energy industry, the lithium battery industry has risen rapidly. Among them, the negative electrode material of lithium batteries is mainly lithium profiles. Therefore, the production of lithium profiles has received widespread attention.

[0003] At present, the preparation of lithium profiles requires first casting metallic lithium into lithium ingots, and then using a lithium profile extrusion molding device to extrude the lithium ingot into profiles such as lithium strips, lithium rods, and lithium bars. The lithium profile extrusion molding device has a variety of structural forms. For example, the Chinese utility model patent with publication number CN218963647U and publication date 2023.05.06 records a lithium strip extrusion device, which includes an extrusion cylinder, a vacuum box and an extrusion part. The extrusion cylinder has an extrusion cavity, one end of the extrusion cavity is provided with a die head with a lithium outlet, and the other end of the extrusion cavity is provided with an extrusion part, and the extrusion part has an extrusion end extending into the extrusion cavity, and the extrusion end can extrude the lithium ingot toward the lithium outlet. The device uses a vacuum box to heat and melt the lithium ingot by the heating part and then enters the extrusion cylinder, and extrudes the lithium strip in the direction of the lithium outlet through the extrusion part. A Chinese invention patent with publication number CN117000802A and publication date of November 7, 2023, describes a rapid processing and molding device for lithium products. The device comprises a cavity and a base. An ingot mold is disposed within the cavity. An extrusion plate is movably disposed within the inner cavity of the ingot mold. A push rod is provided at the left end of the ingot mold, and a forming mold is provided at the right end. The push rod is connected to the extrusion plate. The forming mold is provided with a discharge port. The cavity is laterally mounted on the base. The device simplifies the existing lithium profile preparation process and improves production efficiency. The sidewalls of the lithium discharge port and the discharge port are relatively smooth, facilitating the demolding of the lithium profile.

[0004] Although the above-mentioned existing device can complete the extrusion molding operation of lithium profile quickly and efficiently, after the extrusion rod has completed the extrusion stroke, the extrusion end moves to the forming die position and fits with the forming die, and the cutter cuts the lithium profile outside the extrusion molding device, and the extrusion molding operation ends. At this time, there is still lithium material accumulated in the discharge port, and this part of lithium material completely blocks the discharge port, not only making it easy for the extrusion rod to be unable to reset, even if the extrusion rod is successfully reset, in the next extrusion molding operation process, although the lithium material accumulated in the discharge port can be pushed out under the propulsion of the extrusion rod, a large amount of air in the extrusion chamber during the extrusion rod propulsion process can enter the extrusion-molded lithium profile, making bubbles appear in the extrusion-molded lithium profile, and the air in the extrusion chamber can also react with the lithium ingot, seriously affecting product quality. If the product produced is a lithium ribbon, it may even cause the lithium ribbon of output to break. Therefore, in order to ensure the quality of the lithium profile, after the extrusion molding operation ends, the lithium material accumulated in the discharge port needs to be cleaned out to ensure that the discharge port is unobstructed. At present, after each extrusion operation, the operator is required to use an iron rod or a hammer to knock out the lithium material accumulated in the discharge port. This not only wastes manpower, but the high temperature at the discharge port of the equipment can easily cause burns to the operators. During this process, the equipment is in standby mode, which reduces production efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a lithium profile extrusion molding device, which can automatically clean the accumulated lithium material in the discharge port, ensure the discharge port is unobstructed, save manpower, be safe and reliable, and improve production efficiency.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a lithium profile extrusion molding device, comprising a transversely arranged extrusion cylinder, an extrusion cavity provided in the extrusion cylinder, an extrusion portion provided in the extrusion cavity, an extrusion push rod provided at one end of the extrusion cavity, a forming die provided at the other end of the extrusion cavity, a discharge port connected to the extrusion cavity provided on the forming die; the extrusion portion is connected to the telescopic end of the extrusion push rod;

[0007] The extrusion part is provided with a hole-cleaning part protruding toward the discharge port;

[0008] When the extrusion part contacts the forming die, the hole-cleaning part passes through the discharge port, and a gap is formed between the hole-cleaning part and the side wall of the discharge port.

[0009] Furthermore, the outer contour of the projection of the hole cleaning portion on the end face of the discharge port is the same as the shape of the discharge port; when the extrusion portion abuts against the forming mold, the single-sided gap between the side wall of the hole cleaning portion and the side wall of the discharge port is 2 mm.

[0010] Furthermore, the hole cleaning portion gradually becomes thinner from an end close to the extrusion portion to an end close to the discharge port.

[0011] Furthermore, the hole cleaning portion is made of copper.

[0012] Furthermore, a screw is vertically arranged on the end surface of the hole cleaning portion close to the extrusion portion, and a threaded hole is provided on the end surface of the extrusion portion close to the hole cleaning portion, and the screw is threadedly connected to the threaded hole.

[0013] Furthermore, the hole cleaning portion and the screw are an integrally formed structure.

[0014] Furthermore, the extrusion portion has an installation chamber, the opening of which faces the discharge port; an ejection push rod is provided in the installation chamber and is arranged in the same direction as the extrusion push rod, and the hole cleaning portion is connected to the telescopic end of the ejection push rod and blocks the opening;

[0015] The ejection push rod is used to drive the hole cleaning part to move synchronously therewith so that the hole cleaning end of the hole cleaning part enters and exits the opening, and the hole cleaning end is an end of the hole cleaning part close to the discharge port.

[0016] Furthermore, the ejection push rod is a hydraulic push rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: providing a lithium profile extrusion molding device, which automatically ejects a portion of the lithium material accumulated in the discharge port at the end of the extrusion molding operation by arranging a hole-cleaning portion on the extrusion portion, thereby ensuring that the discharge port is unobstructed, saving production processes, saving manpower, improving production safety factors, and improving production efficiency. The hole-cleaning portion is retractably mounted in the extrusion portion using an ejection push rod, so that the extrusion portion moves to the extrusion limit position and abuts the molding die, and then the hole-cleaning portion enters the discharge port to eject all the lithium material in the discharge port. The lithium material ejected by the hole-cleaning portion forms an integrated structure with the lithium profile, thereby improving the effective utilization rate of the lithium ingot, saving time, and improving the hole-cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic cross-sectional view of an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 The schematic diagram of the structure when the hole cleaning part in the discharge port is unblocked;

[0020] Figure 3 It is a structural entity diagram of another embodiment of the utility model;

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure when the discharge port is unblocked in the middle cleaning hole;

[0022] Figure numerals: 1-extrusion cylinder; 2-extrusion chamber; 3-extrusion part; 31-screw; 32-installation chamber; 33-opening; 4-extrusion push rod; 5-forming mold; 51-discharge port; 6-hole cleaning part; 7-ejection push rod. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. 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.

[0024] like Figure 1-2 As shown, a lithium profile extrusion molding device includes a transversely arranged extrusion cylinder 1, an extrusion chamber 2 is provided in the extrusion cylinder 1, an extrusion portion 3 is provided in the extrusion chamber 2, an extrusion push rod 4 is provided at one end of the extrusion chamber 2, a forming die 5 is provided at the other end of the extrusion chamber 2, and a discharge port 51 connected to the extrusion chamber 2 is provided on the forming die 5; the extrusion portion 3 is connected to the telescopic end of the extrusion push rod 4, and a hole cleaning portion 6 protruding toward the discharge port 51 is provided on the extrusion portion 3; when the extrusion portion 3 abuts the forming die 5, the hole cleaning portion 6 passes through the discharge port 51, and a gap is formed between the hole cleaning portion 6 and the side wall of the discharge port 51.

[0025] A lithium ingot is placed in the extrusion chamber 2, and the extrusion push rod 4 pushes the extrusion part 3 and the hole cleaning part 6 to move toward the discharge port 51. The extrusion part 3, the hole cleaning part 6 and the cavity wall of the extrusion chamber 2 jointly extrude the lithium ingot, and the lithium ingot is extruded from the discharge port 51 to form a lithium profile. When the hole cleaning portion 6 begins to enter the discharge port 51, lithium ingots still remain between the extrusion portion 3 and the forming die 5 in the extrusion cavity 2. The extrusion push rod 4 continues to push the extrusion portion 3 and the hole cleaning portion 6 toward the discharge port 51, and the hole cleaning portion 6 pushes out the lithium material accumulated in the corresponding area of ​​the discharge port 51. At the same time, the extrusion portion 3 extrude the remaining lithium ingots in the extrusion cavity 2 from the gap between the hole cleaning portion 6 and the side wall of the discharge port 51 and recycles them until the extrusion portion 3 moves to the extreme position and abuts against the forming die 5, and the hole cleaning portion 6 passes through the discharge port 51. This operation is completed. At this time, lithium material is accumulated in the gap between the hole cleaning portion 6 and the side wall of the discharge port 51. After the extrusion push rod 4 drives the extrusion portion 3 and the hole cleaning portion 6 to reset, the lithium material accumulated in the discharge port 51 is pushed out and recycled during the next extrusion molding operation. The utility model provides a hole cleaning portion 6 on the extrusion portion 3 so that the device can automatically push out part of the lithium material accumulated in the discharge port at the end of the extrusion molding operation, thereby ensuring that the discharge port is unobstructed, saving production processes, saving manpower, improving production safety factors, and improving production efficiency.

[0026] The hole-cleaning portion 6 has various structural forms, including a cylindrical, pyramidal, table-like, spindle-like, or spherical structure. The outer contour of its projection on the end face of the discharge port 51 can be circular, triangular, rectangular, or a regular hexagonal structure. Preferably, the outer contour of the projection of the hole-cleaning portion 6 on the end face of the discharge port 51 is the same as the shape of the discharge port 51. When the extrusion portion 3 abuts the forming die 5, the single-sided gap between the sidewall of the hole-cleaning portion 6 and the sidewall of the discharge port 51 is 2 mm. While ensuring that the hole-cleaning portion 6 smoothly passes through the discharge port 51, as much lithium material accumulated in the discharge port 51 as possible is ejected, reducing lithium material residue.

[0027] As a further preference, the hole cleaning portion 6 gradually tapers from one end close to the extrusion portion 3 to one end close to the discharge port 51. The hole cleaning portion 6 may be a hemispherical structure, a conical structure or a platform structure. In the process from the hole cleaning portion 6 entering the discharge port to completely passing through the discharge port 51, the gap between the side surface of the hole cleaning portion 6 and the side wall of the discharge port 51 gradually decreases. While ensuring the amount of lithium material cleaned at the discharge port 51, the gap between the two is increased when the hole cleaning portion 6 just enters the discharge port 51, thereby increasing the extrusion speed of the remaining lithium ingots between the extrusion portion 3 and the forming mold 5 in the extrusion cavity 2, improving the cleaning efficiency of the discharge port 51, and improving production efficiency.

[0028] The temperature during the extrusion molding operation is generally between 50°C and 60°C. In addition, the lithium element has active chemical properties. Preferably, the hole cleaning portion 6 is made of copper, which has stable performance and will not react with lithium, thereby ensuring the purity and quality of the lithium profile product.

[0029] The hole cleaning portion 6 can be welded to the extrusion portion 3, or it can be detachably mounted on the extrusion portion 3 by means of connectors such as bolts and snaps. Preferably, a screw 31 is vertically provided on the end face of the hole cleaning portion 6 close to the extrusion portion 3, and a threaded hole is provided on the end face of the extrusion portion 3 close to the hole cleaning portion 6. The screw 31 is threadedly connected to the threaded hole. The hole cleaning portion 6 is detachably connected to the extrusion portion 3, and the hole cleaning portion 6 can be replaced with a matching structure according to the different structures of the forming mold 5, thereby saving costs. As a further preferred embodiment, the hole cleaning portion 6 and the screw 31 are an integrally formed structure, without the need for connectors of other structures, resulting in a simpler structure.

[0030] The extrusion portion 3 is used to cooperate with the sidewalls of the extrusion chamber 2 to extrude the lithium ingot, thereby forming the lithium ingot at the discharge port 51. Therefore, it is necessary to ensure that the shape and size of the extrusion portion 3 are compatible with the extrusion chamber 2. In other words, the sidewalls of the extrusion portion 3 fit closely with the sidewalls of the extrusion chamber 2 without any gap. The extrusion portion is generally configured as a horizontally arranged cylindrical structure.

[0031] When the hole cleaning part 6 of the above device enters the discharge port 51 and starts the hole cleaning operation, the remaining lithium ingots between the extrusion part 3 and the forming die 5 in the extrusion cavity 2 can only be squeezed out from the gap between the hole cleaning part 6 and the side wall of the discharge port 51. Not only is the efficiency low, but the extruded lithium ingots cannot be formed into the shape of the desired product and can only be recycled and reused, which increases the operation process and time. Figure 3-4 As shown, preferably, the extrusion portion 3 has an installation chamber 32, and the opening 33 of the installation chamber 32 faces the discharge port 51; the installation chamber 32 is provided with an ejection push rod 7 arranged in the same direction as the extrusion push rod 4, and the hole cleaning portion 6 is connected to the telescopic end of the ejection push rod 7 and blocks the opening 33; the ejection push rod 7 is used to drive the hole cleaning portion 6 to move synchronously with it so that the hole cleaning end of the hole cleaning portion 6 enters and exits the opening 33, and the hole cleaning end is the end of the hole cleaning portion 6 close to the discharge port 51.

[0032] When the extrusion unit 3 is spaced from the forming die 5, the hole cleaning unit 6 and the extrusion unit 3 function as an integrated structure to extrude the lithium ingot. When the extrusion unit 3 abuts the forming die 5, the lithium extrusion operation is completed and the discharge port 51 is blocked by the accumulated lithium material. The ejector push rod 7 is activated, extending toward the discharge port 51 and pushing the hole cleaning unit 6 to eject the accumulated lithium material in the discharge port 51. The hole cleaning unit 6 penetrates the discharge port 51, clearing the discharge port 51. The ejector push rod 7 then drives the hole cleaning unit 6 back to its original position. The hole cleaning portion 6 is mounted within the extrusion portion 3 using an ejector push rod 7, allowing the hole cleaning portion 6 to retract or extend from the extrusion portion 3. When the extrusion portion 3 moves to its extrusion limit position and abuts the forming die 5, the hole cleaning portion 6 can extend from the extrusion portion 3 through the opening 33 and enter the discharge port 51 to eject all the lithium material accumulated in the discharge port 51. The lithium material ejected by the hole cleaning portion 6 forms an integrated structure with the previously extruded lithium profile, thereby improving the effective utilization rate of the lithium ingots and enhancing production efficiency. In addition, the lithium ingots are always discharged through the entire channel of the discharge port 51, saving time and improving the hole cleaning efficiency.

[0033] Ejector push rod 7 is used to drive the hole cleaning section 6 to synchronously extend and retract. It can be a hydraulic push rod, a pneumatic push rod, or an electric push rod. Considering the stability of the telescopic movement, ejector push rod 7 is generally a hydraulic push rod. Opening 33 in the extrusion section 3 cooperates with hole cleaning section 6 to squeeze the lithium ingot. The shape and size of hole cleaning section 6 and opening 33 are adapted to ensure that opening 33 is completely blocked. This prevents the lithium ingot from entering the installation chamber 32 through the opening during the extrusion operation and affecting the operation of ejector push rod 7, thereby improving the reliability of the equipment.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A lithium profile extrusion molding device, comprising a transversely arranged extrusion cylinder (1), an extrusion chamber (2) provided in the extrusion cylinder (1), an extrusion portion (3) provided in the extrusion chamber (2), an extrusion push rod (4) provided at one end of the extrusion chamber (2), a forming die (5) provided at the other end of the extrusion chamber (2), a discharge port (51) connected to the extrusion chamber (2) provided on the forming die (5); the extrusion portion (3) is connected to the telescopic end of the extrusion push rod (4), and is characterized in that: The extrusion portion (3) is provided with a hole-cleaning portion (6) protruding toward the discharge port (51); When the extrusion portion (3) abuts against the forming die (5), the hole-clearing portion (6) penetrates the discharge port (51), and a gap exists between the hole-clearing portion (6) and the side wall of the discharge port (51).

2. The lithium profile extrusion molding device according to claim 1, characterized in that: The outer contour of the projection of the hole-cleaning portion (6) on the end face of the discharge port (51) is the same as the shape of the discharge port (51); when the extrusion portion (3) abuts against the forming die (5), the single-side gap between the side wall of the hole-cleaning portion (6) and the side wall of the discharge port (51) is 2 mm.

3. The lithium profile extrusion molding device according to claim 2, characterized in that: The hole cleaning portion (6) gradually tapers from an end close to the extrusion portion (3) to an end close to the discharge port (51).

4. The lithium profile extrusion molding device according to claim 1, characterized in that: The hole cleaning portion (6) is made of copper.

5. The lithium profile extrusion molding device according to claim 1, characterized in that: A screw rod (31) is vertically arranged on the end surface of the hole cleaning portion (6) close to the extrusion portion (3), and a threaded hole is provided on the end surface of the extrusion portion (3) close to the hole cleaning portion (6), and the screw rod (31) is threadedly connected to the threaded hole.

6. The lithium profile extrusion molding device according to claim 5, characterized in that: The hole cleaning portion (6) and the screw (31) are an integrally formed structure.

7. The lithium profile extrusion molding device according to any one of claims 1 to 4, characterized in that: The extrusion portion (3) has an installation chamber (32) therein, and an opening (33) of the installation chamber (32) faces the discharge port (51); an ejection push rod (7) arranged in the same direction as the extrusion push rod (4) is provided in the installation chamber (32), and the hole cleaning portion (6) is connected to the telescopic end of the ejection push rod (7) and blocks the opening (33); The ejection push rod (7) is used to drive the hole cleaning part (6) to move synchronously therewith so that the hole cleaning end of the hole cleaning part (6) enters and exits the opening (33), and the hole cleaning end is the end of the hole cleaning part (6) close to the discharge port (51).

8. The lithium profile extrusion molding device according to claim 6, characterized in that: The ejection push rod (7) is a hydraulic push rod.

Images