A circular porous crucible for lithium battery negative electrode material and a production method thereof

Abstract

The present invention discloses a circular porous crucible for negative electrode materials of lithium batteries, comprising a bottom box, a circular through hole is provided in the middle of the top surface of the bottom box, a crucible mold barrel is provided in the circular through hole, a circular bracket is provided on the bottom surface of the crucible mold barrel in the bottom box, and the circular bracket is connected to the crucible mold barrel through a rotating mechanism, and the bottom box is connected to the circular bracket through a lifting mechanism; a trapezoidal bracket is provided above the top surface of the bottom box, a fixed through hole is provided in the middle of the top surface of the trapezoidal bracket, a circular box is provided in the fixed through hole, an adjustment mechanism is provided in the circular box, and a downward pressing circular template is provided above the crucible mold barrel. The present invention also discloses a production method of a circular porous crucible for negative electrode materials of lithium batteries; the present invention has a compact overall structural design through the coordinated use of various mechanisms, increases the stability of the graphite crucible during the pressing process, and facilitates the replacement of crucible molds of different diameters.

Description

Technical Field

[0001] The invention relates to the technical field of crucible production, and in particular to a circular porous crucible for lithium battery negative electrode material and a production method thereof. Background Art

[0002] Graphite crucibles are made of natural flake graphite as the main raw material and plastic refractory clay or carbon as a binder. They are characterized by high temperature resistance, strong thermal conductivity, good corrosion resistance, and long service life. During high-temperature use, the thermal expansion coefficient is small, and it has a certain resistance to strain in the case of rapid cooling and rapid heating. It has strong corrosion resistance to acidic and alkaline solutions, excellent chemical stability, and does not participate in chemical reactions during the smelting process. The inner wall of the graphite crucible is smooth, and the molten metal liquid is not easy to leak and adhere to the inner wall of the crucible, so that the metal liquid has good fluidity and castability, and is suitable for casting and molding in various molds.

[0003] When producing crucibles, due to the different diameters, equipment with different diameters needs to be used to produce the crucibles. In addition, the existing crucibles are usually one-piece. During the production process, a secondary punching method is sometimes required, which is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to improve the deficiencies in the prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a circular porous crucible for lithium battery negative electrode material and a production method thereof.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A circular porous crucible for anode materials of lithium batteries, comprising a bottom box, a rotating mechanism, a lifting mechanism, and an adjusting mechanism, wherein the bottom box is a rectangular box placed horizontally, a circular through hole is opened in the middle of the top surface of the bottom box, a vertically placed crucible mold cylinder is arranged in the circular through hole, a circular bracket with an open bottom surface is arranged on the bottom surface of the crucible mold cylinder in the bottom box, and the circular bracket is connected to the crucible mold cylinder through a rotating mechanism, and the bottom box is connected to the circular bracket through a lifting mechanism;

[0008] A trapezoidal bracket is provided above the top surface of the bottom box, and two sides of the bottom surface of the trapezoidal bracket are respectively fixedly connected to two sides of the bottom surface of the bottom box, a fixing through hole is opened in the middle of the top surface of the trapezoidal bracket, a fixed circular box is provided in the fixing through hole, an adjustment mechanism is provided in the circular box, and a downward pressing circular template is provided above the crucible mold tube.

[0009] Preferably, the rotating mechanism comprises a rotating motor, a rotating bearing is provided through and fixedly connected in the middle of the top surface of the circular bracket, a rotating shaft is inserted through and fixedly connected in the rotating bearing, a polygonal clamping block is provided at the top of the rotating shaft, a polygonal clamping cylinder is provided in the middle of the bottom surface of the crucible mold cylinder, and the polygonal clamping block is fitted in the polygonal clamping cylinder;

[0010] A rotating motor is provided on one side of the inner top surface of the circular bracket, a first bevel gear coaxially connected is provided at the motor shaft end of the rotating motor, a second bevel gear coaxially fixed is provided at the bottom end of the rotating shaft, and the first bevel gear is meshed with the second bevel gear at 90 degrees.

[0011] Preferably, a plurality of limiting clamping rings are provided on the outer side of the bottom surface of the crucible mold tube, a limiting groove steel ring is provided on the outer side of the top surface of the circular bracket, and the limiting clamping rings are engaged in the corresponding limiting groove steel rings.

[0012] Preferably, the lifting mechanism comprises a lifting motor and a lead screw, a lifting motor is provided on one side of the bottom of the bottom box, a lifting bearing is provided on the other side of the bottom of the bottom box, a coaxially connected lifting shaft is provided at the motor shaft end of the lifting motor, and the outer end of the lifting shaft is inserted into the lifting bearing;

[0013] Fixed bearings are provided at the bottom of the two side walls of the bottom box, and a vertically penetrating and fixed lead screw is inserted into each of the fixed bearings. A lead screw stopper is provided at the top of each lead screw, and a spirally connected wire drum is sleeved in the middle of each lead screw. Lifting blocks are provided at the bottom of the two side surfaces of the circular bracket, and each lifting block is fixedly connected to the corresponding wire drum.

[0014] Preferably, a pair of symmetrically fixed third bevel gears are sleeved on both ends of the lifting shaft in the bottom box, a concentrically fixed fourth bevel gear is sleeved on the bottom end of each lead screw, and each third bevel gear is meshed and connected with the corresponding fourth bevel gear at 90 degrees.

[0015] Preferably, the adjustment mechanism comprises an adjustment motor and an L-shaped long rod, an adjustment motor with an output end facing downward is provided in the middle of the top surface of the circular box, a limit bearing fixedly connected through is provided in the middle of the bottom surface of the circular box, an adjustment shaft fixedly connected through is inserted in the limit bearing, the motor shaft end of the adjustment motor is coaxially connected with the top end of the adjustment shaft, a driving gear is provided in the middle of the adjustment shaft in the circular box, and a positioning long rod is provided at the bottom end of the adjustment shaft;

[0016] A plurality of through-fixed linkage bearings are evenly distributed on the outer side of the bottom of the circular box, a through-fixed linkage shaft is inserted into each of the linkage bearings, a driven gear is arranged at the top of each linkage shaft in the circular box, and the driving gear is meshed and connected with the plurality of driven gears in turn, and an L-shaped long rod is arranged at the bottom end of each linkage shaft.

[0017] Preferably, the top end of the positioning long rod is sleeved with a concentrically fixed flange ring, the middle of the top surface of the pressing circular template is provided with a through-fixed T-shaped flange ring, the outer side of the top surface of the pressing circular template is evenly distributed with a number of positioning holes, the T-shaped flange ring is slidably sleeved on the top of the positioning long rod, and each of the L-shaped long rods is cooperated to penetrate and insert into the corresponding positioning hole.

[0018] Preferably, a plurality of bolts are evenly distributed on the outer side of the top surface of the fixed flange ring, and the bottom end of each of the bolts is screwed on the T-shaped flange ring.

[0019] Preferably, fixed handles are provided in the middle of both side surfaces of the crucible mold tube, and a handle cover is provided in the middle of each fixed handle.

[0020] The present invention also proposes a method for producing a circular porous crucible for a lithium battery negative electrode material, comprising the following steps:

[0021] Step 1: The lifting motor, the rotating motor, and the regulating motor are electrically connected to the external power supply through power lines respectively. According to the diameter of the graphite crucible to be produced, a matching crucible mold barrel and a downward pressing circular template are selected, and the crucible mold barrel is placed centrally on the top surface of the circular bracket by holding the fixed handle, so that the polygonal clamping block is fitted in the polygonal clamping barrel, and the limiting clamping ring is fitted in the limiting groove steel ring, thereby increasing the stability of the crucible mold barrel placed on the circular bracket;

[0022] Step 2: According to the diameter of the downward pressing circular template, the adjusting motor is started, and the motor shaft of the adjusting motor drives the adjusting shaft and the driving gear to rotate slowly and synchronously, and drives a number of driven gears and linkage shafts to rotate synchronously in turn through meshing, and drives a number of L-shaped long rods to rotate to correspond to the positioning holes on the downward pressing circular template, and then the adjusting motor is stopped, and then the T-shaped flange ring is slidably sleeved on the top of the positioning long rod, so that each L-shaped long rod is inserted into the corresponding positioning hole, and the fixed flange ring and the T-shaped flange ring are spirally locked by a number of bolts, thereby increasing the stability of the downward pressing circular template and the L-shaped long rod;

[0023] Step three, start the rotating motor, the motor shaft of the rotating motor drives the first bevel gear to rotate synchronously, the meshing drives the second bevel gear, the rotating shaft and the polygonal clamping block to rotate synchronously, and then drives the polygonal clamping tube and the crucible mold tube to rotate, drives the limit clamping ring to rotate along the limit groove steel ring, adjusts the rotation of the crucible mold tube, and adds an appropriate amount of graphite aggregate into the crucible mold tube to increase the uniformity of feeding, and stops the rotating motor after the feeding is completed;

[0024] Step 4: Start the lifting motor, the motor shaft of the lifting motor drives the lifting shaft and a pair of third bevel gears to rotate synchronously, meshing and driving the fourth bevel gear and the lead screw to rotate synchronously, thereby driving the wire drum to cooperate with the lead screw to rise, and driving the circular bracket and the crucible mold barrel to rise upward through the lifting block, so that a plurality of L-shaped long rods and positioning long rods are evenly inserted in the crucible mold barrel, driving the downward pressing circular template to press the graphite aggregate downward along the inner wall of the top port of the crucible mold barrel;

[0025] Step 5: After the graphite crucible is pressed down to form, the crucible mold tube is controlled to descend, and the crucible mold tube is taken out through a fixed handle, and then the formed graphite crucible is taken out.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, the motor shaft of the lifting motor drives the lifting shaft and a pair of third bevel gears to rotate synchronously, and the meshing drives the fourth bevel gear and the lead screw to rotate synchronously, thereby driving the wire drum to cooperate with the lead screw to rise spirally, and the circular bracket and the crucible mold barrel are driven to rise upward through the lifting block, so that a plurality of L-shaped long rods and positioning long rods are evenly inserted in the crucible mold barrel, and the downward pressing circular template is driven to press the graphite aggregate downward along the inner wall of the top port of the crucible mold barrel;

[0028] 2. In the present invention, according to the diameter of the downward pressing circular template, the adjusting motor is started, and the motor shaft of the adjusting motor drives the adjusting shaft and the driving gear to rotate synchronously and slowly, and drives a plurality of driven gears and linkage shafts to rotate synchronously in turn through meshing, and drives a plurality of L-shaped long rods to rotate to correspond to the positioning holes on the downward pressing circular template, and then the adjusting motor is stopped, and then the T-shaped flange ring is slidably sleeved on the top of the positioning long rod, so that each L-shaped long rod is inserted into the corresponding positioning hole in cooperation, and the fixed flange ring and the T-shaped flange ring are spirally locked by a plurality of bolts, thereby increasing the stability of the downward pressing circular template and the L-shaped long rod;

[0029] In summary, the present invention solves the problems of inconvenience in replacing crucible molds and low pressing efficiency during the production of graphite crucibles through the coordinated use of various mechanisms. The overall structural design is compact, which increases the stability of the graphite crucible during the pressing process and facilitates the replacement of crucible molds of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 It is a front view schematic diagram of the present invention;

[0032] Figure 2 It is a front cross-sectional schematic diagram of the present invention;

[0033] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0035] Figure 5 It is a bottom view schematic diagram of the circular box of the present invention;

[0036] Figure 6 It is a schematic top view of the top surface of the downward pressing circular template of the present invention;

[0037] Figure 7 It is a schematic diagram of the production method of the present invention;

[0038] Serial numbers in the figure: bottom box 1, lifting motor 11, lifting shaft 12, fixed bearing 13, screw 14, third bevel gear 15, fourth bevel gear 16, wire drum 17, lifting block 18, circular bracket 2, rotating motor 21, first bevel gear 22, rotating shaft 23, second bevel gear 24, polygonal clamping cylinder 25, polygonal clamping block 26, limiting clamping ring 27, limiting groove steel ring 28, crucible mold cylinder 3, fixed handle 31, trapezoidal bracket 32, pressing circular template 33, T-shaped flange ring 34, fixing flange ring 35, bolt 36, circular box 4, adjusting motor 41, adjusting shaft 42, driving gear 43, positioning long rod 44, linkage shaft 45, driven gear 46, L-shaped long rod 47. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Example 1: This example provides a circular porous crucible for a lithium battery negative electrode material, see Figure 1-6, including a bottom box 1, a rotating mechanism, a lifting mechanism, and an adjusting mechanism. The bottom box 1 is a horizontally placed rectangular box. A circular through hole is opened in the middle of the top surface of the bottom box 1. A vertically placed crucible mold tube 3 is arranged in the circular through hole. A circular bracket 2 with an open bottom surface is arranged on the bottom surface of the crucible mold tube 3 in the bottom box 1. The circular bracket 2 is connected to the crucible mold tube 3 through a rotating mechanism. The bottom box 1 is connected to the circular bracket 2 through a lifting mechanism.

[0041] A trapezoidal bracket 32 ​​is provided above the top surface of the bottom box 1, and the two sides of the bottom surface of the trapezoidal bracket 32 ​​are respectively fixedly connected to the two sides of the bottom surface of the bottom box 1, a fixing through hole is opened in the middle of the top surface of the trapezoidal bracket 32, a fixed circular box 4 is provided in the fixing through hole, an adjustment mechanism is provided in the circular box 4, and a downward pressing circular template 33 is provided above the crucible mold tube 3.

[0042] In the present invention, the lifting mechanism includes a lifting motor 11 and a lead screw 14. The lifting motor 11 is provided on one side of the bottom of the bottom box 1. The model of the lifting motor 11 is YX3-112M-4. A lifting bearing is provided on the other side of the bottom of the bottom box 1. The motor shaft end of the lifting motor 11 is provided with a coaxially connected lifting shaft 12, and the outer end of the lifting shaft 12 is inserted into the lifting bearing.

[0043] Fixed bearings 13 are provided at the bottom of both side walls of the bottom box 1, and a vertically penetrating and fixed lead screw 14 is inserted into each fixed bearing 13. A lead screw stopper is provided at the top of each lead screw 14, and a spirally connected wire drum 17 is sleeved in the middle of each lead screw 14. Lifting blocks 18 are provided at the bottom of both side surfaces of the circular bracket 2, and each lifting block 18 is fixedly connected to the corresponding wire drum 17.

[0044] A pair of symmetrically fixed third bevel gears 15 are sleeved on both ends of the lifting shaft 12 in the bottom box 1, and a concentrically fixed fourth bevel gear 16 is sleeved on the bottom end of each lead screw 14, and each third bevel gear 15 is meshed and connected with the corresponding fourth bevel gear 16 at a ninety-degree angle; the motor shaft of the lifting motor 11 drives the lifting shaft 12 and the pair of third bevel gears 15 to rotate synchronously, and the meshing drives the fourth bevel gear 16 and the lead screw 14 to rotate synchronously, thereby driving the wire drum 17 to cooperate with the lead screw 14 to rise spirally, and driving the circular bracket 2 and the crucible mold tube 3 to rise upward through the lifting block 18, so that a number of L-shaped long rods 47 and the positioning long rods 44 are evenly inserted in the crucible mold tube 3, driving the downward pressing circular template 33 to press the graphite aggregate downward along the inner wall of the top port of the crucible mold tube 3.

[0045] In the present invention, the adjustment mechanism includes an adjustment motor 41 and an L-shaped long rod 47. The middle of the top surface of the circular box 4 is provided with an adjustment motor 41 with an output end facing downward. The model of the adjustment motor 41 is TYBZ-300-100L-4. The middle of the bottom surface of the circular box 4 is provided with a through-fixed limit bearing. The through-fixed adjustment shaft 42 is inserted in the limit bearing. The motor shaft end of the adjustment motor 41 is coaxially connected with the top end of the adjustment shaft 42. A driving gear 43 is provided in the middle of the adjustment shaft 42 in the circular box 4. A positioning long rod 44 is provided at the bottom end of the adjustment shaft 42.

[0046] A plurality of through-fixed linkage bearings are evenly distributed on the outer side of the bottom of the circular box 4, and a through-fixed linkage shaft 45 is inserted into each linkage bearing. A driven gear 46 is provided at the top of each linkage shaft 45 in the circular box 4, and the driving gear 43 is meshed and connected with the plurality of driven gears 46 in turn, and an L-shaped long rod 47 is provided at the bottom end of each linkage shaft 45.

[0047] In the present invention, the top end of the positioning rod 44 is sleeved with a concentrically fixed fixed flange ring 35, the middle of the top surface of the pressing circular template 33 is provided with a through-fixed T-shaped flange ring 34, the outer side of the top surface of the pressing circular template 33 is evenly provided with a plurality of positioning holes, the T-shaped flange ring 34 is slidably sleeved on the top of the positioning rod 44, and each L-shaped rod 47 is inserted into the corresponding positioning hole in cooperation;

[0048] The motor shaft of the adjusting motor 41 drives the adjusting shaft 42 and the driving gear 43 to rotate slowly and synchronously, and drives a plurality of driven gears 46 and the linkage shaft 45 to rotate synchronously in turn through meshing action, and drives a plurality of L-shaped long rods 47 to rotate to correspond to the positioning holes on the pressing circular template 33, stops the adjusting motor 41, and then slides the T-shaped flange ring 34 on the top of the positioning long rod 44, so that each L-shaped long rod 47 is inserted into the corresponding positioning hole in cooperation.

[0049] In the present invention, a plurality of bolts 36 are evenly distributed on the outer side of the top surface of the fixed flange ring 35, and the bottom end of each bolt 36 is screwed on the T-shaped flange ring 34; a fixed handle 31 is provided in the middle of both side surfaces of the crucible mold tube 3, and a handle cover is provided in the middle of each fixed handle 31; the fixed flange ring 35 and the T-shaped flange ring 34 are screwed and locked by a plurality of bolts 36, thereby increasing the stability of the downward pressing circular template 33 and the L-shaped long rod 47.

[0050] Embodiment 2: In embodiment 1, there is still the problem of uneven material loading in the crucible mold barrel. Therefore, based on embodiment 1, this embodiment further includes:

[0051] In the present invention, the rotating mechanism includes a rotating motor 21, a rotating bearing is provided in the middle of the top surface of the circular bracket 2 and is fixedly connected thereto, a rotating shaft 23 is inserted in the rotating bearing and is fixedly connected thereto, a polygonal clamping block 26 is provided at the top of the rotating shaft 23, a polygonal clamping cylinder 25 is provided in the middle of the bottom surface of the crucible mold cylinder 3, and the polygonal clamping block 26 is clamped in the polygonal clamping cylinder 25;

[0052] A rotating motor 21 is provided on one side of the inner top surface of the circular bracket 2. The model of the rotating motor 21 is YZD-3-6. A first bevel gear 22 which is coaxially connected is provided at the end of the motor shaft of the rotating motor 21. A second bevel gear 24 which is concentrically fixed is provided at the bottom end of the rotating shaft 23. The first bevel gear 22 is meshed and connected with the second bevel gear 24 at ninety degrees. The motor shaft of the rotating motor 21 drives the first bevel gear 22 to rotate synchronously, and the meshing drives the second bevel gear 24, the rotating shaft 23 and the polygonal clamping block 26 to rotate synchronously, thereby driving the polygonal clamping tube 25 and the crucible mold tube 3 to rotate, driving the limiting clamping ring 27 to rotate along the limiting groove steel ring 28, rotating and adjusting the crucible mold tube 3, and adding an appropriate amount of graphite aggregate into the crucible mold tube 3, thereby increasing the uniformity of feeding.

[0053] In the present invention, a plurality of limiting clamping rings 27 are provided on the outer side of the bottom surface of the crucible mold tube 3, and a limiting groove steel ring 28 is provided on the outer side of the top surface of the circular bracket 2, and the limiting clamping rings 27 are engaged in the corresponding limiting groove steel rings 28; by holding the fixed handle 31, the crucible mold tube 3 is placed centrally on the top surface of the circular bracket 2, so that the polygonal engaging block 26 is engaged in the polygonal engaging tube 25, and the limiting clamping rings 27 are all engaged in the limiting groove steel rings 28, thereby increasing the stability of the crucible mold tube 3 placed on the circular bracket 2.

[0054] Example 3: See Figure 7 In this embodiment, the present invention also proposes a method for producing a circular porous crucible for a lithium battery negative electrode material, comprising the following steps:

[0055] Step 1: The lifting motor 11, the rotating motor 21, and the adjusting motor 41 are electrically connected to the external power supply through power lines respectively. According to the diameter of the graphite crucible to be produced, the matching crucible mold tube 3 and the downward pressing circular template 33 are selected, and the crucible mold tube 3 is placed centrally on the top surface of the circular bracket 2 by holding the fixed handle 31, so that the polygonal clamping block 26 is engaged in the polygonal clamping tube 25, and the limiting clamping ring 27 is engaged in the limiting groove steel ring 28, thereby increasing the stability of the crucible mold tube 3 placed on the circular bracket 2;

[0056] Step 2: According to the diameter of the pressing circular template 33, the adjusting motor 41 is started, and the motor shaft of the adjusting motor 41 drives the adjusting shaft 42 and the driving gear 43 to rotate synchronously and slowly, and drives a plurality of driven gears 46 and the linkage shaft 45 to rotate synchronously in turn through meshing, and drives a plurality of L-shaped long rods 47 to rotate to correspond to the positioning holes on the pressing circular template 33, and then the adjusting motor 41 is stopped, and then the T-shaped flange ring 34 is slidably sleeved on the top of the positioning long rod 44, so that each L-shaped long rod 47 is inserted into the corresponding positioning hole in cooperation, and the fixing flange ring 35 and the T-shaped flange ring 34 are spirally locked by a plurality of bolts 36, so as to increase the stability of the pressing circular template 33 and the L-shaped long rod 47;

[0057] Step 3, start the rotating motor 21, the motor shaft of the rotating motor 21 drives the first bevel gear 22 to rotate synchronously, meshes and drives the second bevel gear 24, the rotating shaft 23 and the polygonal clamping block 26 to rotate synchronously, and then drives the polygonal clamping tube 25 and the crucible mold tube 3 to rotate, drives the limiting clamping ring 27 to rotate along the limiting groove steel ring 28, rotates and adjusts the crucible mold tube 3, and adds an appropriate amount of graphite aggregate into the crucible mold tube 3, which increases the uniformity of feeding, and stops the rotating motor 21 after the feeding is completed;

[0058] Step 4, start the lifting motor 11, the motor shaft of the lifting motor 11 drives the lifting shaft 12 and a pair of third bevel gears 15 to rotate synchronously, meshing and driving the fourth bevel gear 16 and the lead screw 14 to rotate synchronously, thereby driving the wire drum 17 to cooperate with the lead screw 14 to spirally rise, and driving the circular bracket 2 and the crucible mold tube 3 to rise upward through the lifting block 18, so that a plurality of L-shaped long rods 47 and the positioning long rods 44 are evenly inserted in the crucible mold tube 3, driving the downward pressing circular template 33 to press the graphite aggregate downward along the inner wall of the top port of the crucible mold tube 3;

[0059] Step 5: After the graphite crucible is pressed down to form, the crucible mold tube 3 is controlled to descend, and the crucible mold tube 3 is taken out through the fixed handle 31, and then the formed graphite crucible is taken out.

[0060] The invention solves the problems of inconvenience in replacing crucible molds and low pressing efficiency during the production of graphite crucibles by using various mechanisms in coordination, and the overall structure is compactly designed, which increases the stability of the graphite crucible during the pressing process and facilitates the replacement of crucible molds with different diameters.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production device for a circular porous crucible for a lithium battery negative electrode material, comprising a bottom box (1), a rotating mechanism, a lifting mechanism, and an adjusting mechanism, characterized in that: The bottom box (1) is in the shape of a rectangular box placed horizontally, a circular through hole is opened in the middle of the top surface of the bottom box (1), a crucible mold tube (3) placed vertically is arranged in the circular through hole, a circular bracket (2) with an open bottom surface is arranged on the bottom surface of the crucible mold tube (3) in the bottom box (1), and the circular bracket (2) is connected to the crucible mold tube (3) via a rotating mechanism, and the bottom box (1) is connected to the circular bracket (2) via a lifting mechanism; A trapezoidal bracket (32) is provided above the top surface of the bottom box (1), two sides of the bottom surface of the trapezoidal bracket (32) are respectively fixedly connected to two sides of the bottom surface of the bottom box (1), a fixing through hole is provided in the middle of the top surface of the trapezoidal bracket (32), a fixed circular box (4) is provided in the fixing through hole, an adjustment mechanism is provided in the circular box (4), and a downward pressing circular template (33) is provided above the crucible mold tube (3); The adjusting mechanism comprises an adjusting motor (41) and an L-shaped long rod (47); an adjusting motor (41) with an output end facing downward is provided in the middle of the inner top surface of the circular box (4); a through-fixed limit bearing is provided in the middle of the inner bottom surface of the circular box (4); a through-fixed adjusting shaft (42) is inserted into the limit bearing; the motor shaft end of the adjusting motor (41) is coaxially connected to the top end of the adjusting shaft (42); a driving gear (43) is provided in the middle of the adjusting shaft (42) in the circular box (4); and a positioning long rod (44) is provided at the bottom end of the adjusting shaft (42); A plurality of interlocking bearings are evenly arranged on the outer side of the bottom of the circular box (4), and a interlocking shaft (45) is inserted into each of the interlocking bearings. A driven gear (46) is arranged at the top of each interlocking shaft (45) in the circular box (4), and the driving gear (43) is meshed with the plurality of driven gears (46) in sequence. A long L-shaped rod (47) is arranged at the bottom of each interlocking shaft (45); The top end of the positioning rod (44) is sleeved with a concentrically fixed fixed flange ring (35), the middle of the top surface of the pressing circular template (33) is provided with a through-fixed T-shaped flange ring (34), the outer side of the top surface of the pressing circular template (33) is evenly provided with a plurality of positioning holes, the T-shaped flange ring (34) is slidably sleeved on the top of the positioning rod (44), and each of the L-shaped rods (47) is inserted into the corresponding positioning hole in a cooperative manner.

2. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor (21), a rotating bearing is provided in the middle of the top surface of the circular bracket (2) and is fixedly connected therethrough, a rotating shaft (23) is inserted into the rotating bearing and is fixedly connected therethrough, a polygonal clamping block (26) is provided at the top end of the rotating shaft (23), a polygonal clamping cylinder (25) is provided in the middle of the bottom surface of the crucible mold cylinder (3), and the polygonal clamping block (26) is clamped in the polygonal clamping cylinder (25); A rotating motor (21) is provided on one side of the inner top surface of the circular bracket (2), a first bevel gear (22) coaxially connected is provided at the motor shaft end of the rotating motor (21), a second bevel gear (24) coaxially fixed is sleeved on the bottom end of the rotating shaft (23), and the first bevel gear (22) and the second bevel gear (24) are meshed and connected at a 90-degree angle.

3. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 2, characterized in that: A plurality of limiting clamping rings (27) are provided on the outer side of the bottom surface of the crucible mold tube (3), a limiting groove steel ring (28) is provided on the outer side of the top surface of the circular bracket (2), and the limiting clamping rings (27) are engaged in the corresponding limiting groove steel rings (28).

4. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 1, characterized in that: The lifting mechanism comprises a lifting motor (11) and a lead screw (14); a lifting motor (11) is provided on one side of the bottom of the bottom box (1); a lifting bearing is provided on the other side of the bottom of the bottom box (1); a coaxially connected lifting shaft (12) is provided at the motor shaft end of the lifting motor (11); and the outer end of the lifting shaft (12) is inserted into the lifting bearing; The bottom of both side walls of the bottom box (1) is provided with a fixed bearing (13), each of the fixed bearings (13) is inserted with a vertically penetrating fixed lead screw (14), the top of each lead screw (14) is provided with a lead screw stopper, the middle of each lead screw (14) is sleeved with a spirally connected wire drum (17), and the bottom of both side surfaces of the circular bracket (2) is provided with a lifting block (18), and each lifting block (18) is fixedly connected to the corresponding wire drum (17).

5. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 4, characterized in that: A pair of symmetrically fixed third bevel gears (15) are sleeved at both ends of the lifting shaft (12) in the bottom box (1), and a concentrically fixed fourth bevel gear (16) is sleeved at the bottom end of each lead screw (14), and each third bevel gear (15) is meshed and connected with the corresponding fourth bevel gear (16) at a 90-degree angle.

6. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 1, characterized in that: A plurality of bolts (36) are evenly distributed on the outer side of the top surface of the fixed flange ring (35), and the bottom end of each bolt (36) is screwed on the T-shaped flange ring (34).

7. The production equipment of a circular porous crucible for lithium battery negative electrode material according to claim 1, characterized in that: Fixed handles (31) are provided in the middle of both side surfaces of the crucible mold tube (3), and a handle cover is provided in the middle of each fixed handle (31).

8. The method for producing a circular porous crucible for lithium battery negative electrode material according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: The lifting motor (11), the rotating motor (21), and the regulating motor (41) are electrically connected to an external power supply through power lines respectively. According to the diameter of the graphite crucible to be produced, a matching crucible mold tube (3) and a downward pressing circular template (33) are selected, and the crucible mold tube (3) is placed centrally on the top surface of the circular bracket (2) by holding the fixed handle (31), so that the polygonal clamping block (26) is engaged with the polygonal clamping tube (25), and the limiting clamping ring (27) is engaged with the limiting groove steel ring (28), thereby increasing the stability of the crucible mold tube (3) placed on the circular bracket (2); Step 2: according to the diameter of the pressing circular template (33), the adjusting motor (41) is started, and the motor shaft of the adjusting motor (41) drives the adjusting shaft (42) and the driving gear (43) to rotate synchronously and slowly, and drives a plurality of driven gears (46) and the linkage shaft (45) to rotate synchronously in turn through meshing, and drives a plurality of L-shaped long rods (47) to rotate to correspond to the positioning holes on the pressing circular template (33), and then the adjusting motor (41) is stopped, and then the T-shaped flange ring (34) is slidably sleeved on the top of the positioning long rod (44), so that each L-shaped long rod (47) is inserted into the corresponding positioning hole in cooperation, and the fixing flange ring (35) and the T-shaped flange ring (34) are spirally locked by a plurality of bolts (36), thereby increasing the stability of the pressing circular template (33) and the L-shaped long rod (47); Step 3, starting the rotating motor (21), the motor shaft of the rotating motor (21) drives the first bevel gear (22) to rotate synchronously, meshing and driving the second bevel gear (24) and the rotating shaft (23) and the polygonal engaging block (26) to rotate synchronously, thereby driving the polygonal engaging cylinder (25) and the crucible mold cylinder (3) to rotate, driving the limiting clamping ring (27) to rotate along the limiting groove steel ring (28), rotating and adjusting the crucible mold cylinder (3), and adding a proper amount of graphite aggregate into the crucible mold cylinder (3), thereby increasing the uniformity of feeding, and stopping the rotating motor (21) after the feeding is completed; Step 4, starting the lifting motor (11), the motor shaft of the lifting motor (11) drives the lifting shaft (12) and a pair of third bevel gears (15) to rotate synchronously, meshing and driving the fourth bevel gear (16) and the lead screw (14) to rotate synchronously, thereby driving the wire drum (17) to cooperate with the lead screw (14) to spirally rise, and driving the circular bracket (2) and the crucible mold tube (3) to rise upward through the lifting block (18), so that a plurality of L-shaped long rods (47) and the positioning long rods (44) are evenly inserted in the crucible mold tube (3), driving the downward pressing circular template (33) to press the graphite aggregate downward along the inner wall of the top port of the crucible mold tube (3); Step 5: After the graphite crucible is pressed down to form, the crucible mold tube (3) is controlled to descend, and the crucible mold tube (3) is taken out through the fixed handle (31), and then the formed graphite crucible is taken out.

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