Oil-free shearing device for metal lithium

Abstract

The utility model discloses an oil-free shearing device for lithium metal, which belongs to the field of metal calendaring processing equipment and comprises a die and a cutter device, the cutter device is coaxially and rotatably connected with the top end of the die, a plurality of die holes are uniformly arranged in the die in the circumferential direction, an air passage is arranged in the center of the die, and the air passage is communicated with the die. An air hole is formed in the side wall of the mold and is communicated with the air passage; a communicating groove is formed in the bottom wall of the mold, and the air channel and the mold hole are both communicated with the communicating groove. When metal lithium is extruded and sheared, argon is introduced through the air holes, the temperature of a shearing area is reduced, white oil can be prevented from being used, secondary shearing can be avoided, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the field of metal rolling processing equipment, and particularly relates to an oil-free shearing device for metallic lithium. Background Art

[0002] Metallic lithium is a silver-white soft metal, which is often prepared into different shapes such as lithium-like, rod-like, sheet-like, and special-shaped, and is widely used in the fields of chemical industry, medicine, petrochemical industry, rubber industry, machinery manufacturing, etc. For example, it can react with liquid ammonia to generate lithium amide, which is a strong reducing agent in organic reactions; it is also an important catalyst in a variety of pharmaceutical synthesis reactions, with characteristics such as high catalytic efficiency and few by-products, and has broad market prospects.

[0003] At present, the direct extrusion process is mostly used in industry to prepare metallic lithium of various shapes. The existing extrusion and shearing devices (such as the patent authorization announcement numbers: CN207372398U; CN216298529U) all use cutting tools with blades at both ends and run perpendicular to the mold. During the extrusion and shearing process, high temperature will be generated and adhesion will occur due to the characteristics of metallic lithium. Therefore, white oil is added to cool down and increase the lubrication degree. As a result, foreign matters such as white oil are contaminated on the product, thereby reducing the catalytic performance. Also, due to vertical shearing, the product is easily adhered to the cutting tool, resulting in secondary shearing, increasing the production cost of metallic lithium particles, and reducing the yield and product quality of metallic lithium particles. Content of the Utility Model

[0004] In view of this, the utility model provides an oil-free shearing device for metallic lithium to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An oil-free shearing device for metallic lithium, comprising: a mold and a cutting tool device. The cutting tool device is coaxially rotatably connected to the top of the mold. A plurality of mold holes are circumferentially and evenly arranged in the mold. An air channel is arranged at the center of the mold. Air holes are arranged on the side wall of the mold, and the air holes are communicated with the air channel; a communication groove is arranged on the bottom wall of the mold, and both the air channel and the mold holes are communicated with the communication groove.

[0007] Further, a mold base is arranged at the bottom end of the mold. A plurality of first fixing holes are arranged on the bottom wall of the mold base, and the first fixing holes are fixedly installed on the metallic lithium extrusion equipment through bolts.

[0008] Further, the cutting tool device includes a connecting plate and cutting tools. The cutting tools are fixedly installed at both ends of the connecting plate. The cutting edges of the two cutting tools face in opposite directions. A second fixing hole is arranged at the center of the connecting plate, and the second fixing hole is fixedly installed on the rotating equipment through bolts.

[0009] Further, the cutting knife is bolted to both ends of the connecting plate for replacing the cutting knife.

[0010] Further, a limiting groove is provided at the top end of the mold, a limiting protrusion is provided at the bottom end of the connecting plate, the limiting protrusion extends into the limiting groove, and the side wall of the limiting protrusion is rotatably connected to the side wall of the limiting groove.

[0011] The beneficial effects of the present utility model are as follows:

[0012] When the extrusion equipment extrudes lithium metal through the mold, argon is introduced through the air holes, and the argon enters the air duct, which can reduce the temperature of the upper shearing area of the mold and prevent the lithium metal from discoloring due to high temperature; the air flow continues to enter the mold holes through the connecting grooves at the bottom, forming an air flow between the lithium metal and the mold holes to prevent adhesion, and further blowing the product away from the shearing area after the lithium metal is sheared to avoid secondary shearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0014] Figure 1 is a three-dimensional structural schematic diagram of the mold Figure 1 ;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the cutting knife device Figure 1 ;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the mold Figure 2 ;

[0017] Figure 4 is a three-dimensional structural schematic diagram of the cutting knife device Figure 2 ;

[0018] Figure 5 is a top view of the mold;

[0019] Figure 6 is a top view of the cutting knife device;

[0020] Figure 7 is Figure 5 the A-A cross-sectional view of

[0021] Figure 8 is Figure 5 the B-B cross-sectional view of

[0022] Among them, in the figure:

[0023] 10 - Mold, 11 - Mold hole, 12 - Air passage, 13 - Air hole, 14 - Connecting groove, 15 - Mold base, 16 - First fixing hole, 17 - Limiting groove, 21 - Connecting plate, 211 - Second fixing hole, 212 - Limiting projection, 22 - Cutting knife, 221 - Blade edge. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment

[0026] Referring to the attached Figures 1-8 As shown, the present invention provides an oil - free shearing device for metallic lithium, including: a mold 10 and a cutting knife device. The cutting knife device is coaxially rotatably connected to the top of the mold 10. A plurality of mold holes 11 are circumferentially and evenly arranged in the mold 10. An air passage 12 is arranged at the center of the mold 10. Air holes 13 are arranged on the side wall of the mold 10, and the air holes 13 communicate with the air passage 12; a connecting groove 14 is arranged on the bottom wall of the mold 10, and both the air passage 12 and the mold holes 11 communicate with the connecting groove 14. The whole mold 10 is fixedly installed in an extrusion device, and the connecting groove 14 and the installation surface of the extrusion device form a closed space.

[0027] When cutting metallic lithium, the metallic lithium is extruded from the extrusion device into the mold holes 11. The cutting knife device rotates on the surface of the top of the mold 10 along with a rotating device to cut the metallic lithium leaking out of the mold holes 11; meanwhile, the air holes 13 are connected to an argon gas tank, and argon gas enters the air passage 12 through the air holes 13, which can reduce the temperature of the upper shearing area of the mold 10 and avoid the discoloration of metallic lithium due to high temperature; the air flow continues to enter the mold holes 11 through the bottom connecting groove 14, forming an air flow between the metallic lithium and the mold holes 11 to avoid adhesion, and further blowing the product away from the shearing area after the metallic lithium is sheared to avoid secondary shearing.

[0028] Preferably, in one embodiment, a mold base 15 is arranged at the bottom end of the mold 10, and a plurality of first fixing holes 16 are arranged on the bottom wall of the mold base 15. The first fixing holes 16 are fixedly installed on the metallic lithium extrusion device through bolts.

[0029] Preferably, in an embodiment, the cutter device includes a connecting plate 21 and a cutter 22. The cutter 22 is fixedly installed at both ends of the connecting plate 21. The cutting edges 221 of the two cutters 22 face in opposite directions. A second fixing hole 211 is provided at the center of the connecting plate 21, and the second fixing hole 211 is fixedly installed on the rotating device through bolts. When cutting metallic lithium, the bottom wall of the connecting plate 21 rotates in contact with the surface of the top end of the mold 10. The connecting plate 21 drives the cutters 22 at both ends to rotate. Since the cutting edges 221 of the two cutters 22 face in opposite directions, the two cutting edges 221 can continuously cut the metallic lithium extruded from the mold hole 11.

[0030] Preferably, in an embodiment, the cutter 22 is bolted to both ends of the connecting plate 21 for replacing the cutter 22.

[0031] Preferably, in an embodiment, a limiting groove 17 is provided at the top end of the mold 10, and a limiting protrusion 212 is provided at the bottom end of the connecting plate 21. The limiting protrusion 212 extends into the limiting groove 17, and the side wall of the limiting protrusion 212 is rotatably connected to the side wall of the limiting groove 17. The connecting plate 21 rotates through the limiting protrusion 212 in the limiting groove 17, which can ensure that the connecting plate 21 rotates more stably on the surface of the top end of the mold 10.

[0032] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil-free shearing device for lithium metal, characterized in that: include: A mold (10) and a cutting device, wherein the cutting device is coaxially rotatably connected to the top of the mold (10), a plurality of mold holes (11) are evenly arranged in the circumferential direction in the mold (10), an air channel (12) is arranged at the center of the mold (10), an air hole (13) is arranged on the side wall of the mold (10), and the air hole (13) is connected to the air channel (12); a connecting groove (14) is arranged on the bottom wall of the mold (10), and the air channel (12) and the mold hole (11) are both connected to the connecting groove (14).

2. The oil-free shearing device for metallic lithium according to claim 1, characterized in that: A die seat (15) is provided at the bottom end of the die (10), and a bottom wall of the die seat (15) is provided with a plurality of first fixing holes (16), and the first fixing holes (16) are fixedly mounted on the metal lithium extrusion equipment by means of bolts.

3. The oil-free shearing device for metallic lithium according to claim 1, characterized in that: The cutter device comprises a connecting plate (21) and a cutter (22), wherein the cutter (22) is fixedly mounted at two ends of the connecting plate (21), and the blades (221) of the two cutters (22) face opposite directions. A second fixing hole (211) is provided at the center of the connecting plate (21), and the second fixing hole (211) is fixedly mounted on the rotating device by means of bolts.

4. The oil-free shearing device for metallic lithium according to claim 3, characterized in that: The cutter (22) is connected to the connecting plate (21) at both ends by bolts, so as to facilitate replacement of the cutter (22).

5. The oil-free shearing device for metallic lithium according to claim 3, characterized in that: A limiting groove (17) is provided at the top end of the mold (10), and a limiting protrusion (212) is provided at the bottom end of the connecting plate (21). The limiting protrusion (212) extends into the limiting groove (17), and the side wall of the limiting protrusion (212) is rotatably connected to the side wall of the limiting groove (17).

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