Automatic feeding and filling system for new energy lithium battery negative electrode material

Abstract

The invention relates to the technical field of lithium battery negative electrode material filling equipment, and discloses a new energy lithium battery negative electrode material automatic feeding and filling system which comprises a rack and a stock bin, supporting frames are symmetrically and fixedly connected to the outer walls of the two sides of the rack, the stock bin is fixedly connected to the tops of the supporting frames, and a discharging hopper is fixedly connected to the bottom of the stock bin; a crucible is placed above the top of the rack and located below an opening in the bottom of the discharging hopper, auxiliary positioning mechanisms are symmetrically arranged on the side walls of the top ends of the two supporting frames, each auxiliary positioning mechanism comprises a support fixedly connected to the side walls of the top ends of the supporting frames, and a transverse rod is fixedly connected to the outer wall of the middle of the side, close to the crucible, of each support; and the auxiliary positioning mechanism is arranged, so that the crucible can be limited in the advancing direction of the crucible, the crucible can accurately stop below the opening in the bottom of the discharging hopper, the probability of leakage during negative electrode material filling is reduced, and the working environment is prevented from being polluted.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery negative electrode material filling equipment, and in particular to an automatic feeding and filling system for new energy lithium battery negative electrode materials. Background Art

[0002] New energy lithium battery negative electrode materials are an important component of lithium-ion batteries. During the charge and discharge process of lithium-ion batteries, the negative electrode materials play the role of storing and releasing lithium ions. In the preparation of lithium battery negative electrode materials, adding the negative electrode materials to the crucible is a key step in the graphitization process. By placing them in the crucible and graphitizing them under high temperature, the crystal structure of graphite can be made more regular, which helps to improve the conductivity of the negative electrode materials.

[0003] Traditional loading and filling operations require a lot of manual participation, including loading, metering, filling and other links, which makes the filling efficiency low. If equipment is used to replace manual filling, the conveying part needs to cooperate with the filling part. In particular, when the crucible is conveyed to the bottom of the discharge port, the crucible deviates from the position as the conveying part stops, making it impossible for the discharge port and the crucible opening to be accurately connected, which can easily cause the negative electrode material to leak during filling, causing pollution to the working environment. In this regard, the present application designs an automatic loading and filling system for new energy lithium battery negative electrode materials. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automatic loading and filling system for new energy lithium battery negative electrode materials, which can effectively solve the problem in the prior art that the loading and filling operations require a lot of manual participation, including loading, metering, filling and other links, resulting in low filling efficiency. If equipment is used to replace manual filling, the conveying part needs to cooperate with the filling part. In particular, when the crucible is conveyed to the bottom of the discharge port, the crucible deviates from the position as the conveying part stops, making it impossible for the discharge port and the crucible opening to be accurately connected, which can easily cause the negative electrode material to leak during filling, causing pollution to the working environment.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides an automatic feeding and filling system for negative electrode materials of new energy lithium battery, comprising a frame and a silo, wherein the outer walls on both sides of the frame are symmetrically fixedly connected with support frames, the silo is fixedly connected to the top of the support frame, the bottom of the silo is fixedly connected with a lower hopper, a crucible is placed above the top of the frame and below the bottom opening of the lower hopper, and auxiliary positioning mechanisms are symmetrically arranged on the top side walls of the two support frames;

[0009] In which, the auxiliary positioning mechanism includes a bracket fixedly connected to the top side wall of the support frame, the bracket is fixedly connected to a cross bar on the outer wall in the middle of one side close to the crucible, a friction block is slidably connected to the outer wall of the cross bar, the top of the cross bar away from the friction block is fixedly connected to a vertical rod, the outer wall of the cross bar close to the vertical rod is fixedly connected to a limiting block, the outer wall of the vertical rod is slidably connected to a baffle rod, the outer wall of the top end of the vertical rod is rotatably connected to a roller above the baffle rod, a pull rope is fixedly connected to the top of the friction block, the end of the pull rope away from the friction block is fixedly connected to the top of the baffle rod via the roller, a return spring is provided at the end of the friction block away from the pull rope, and the end of the return spring away from the friction block is connected to the side wall of the end of the cross bar.

[0010] Furthermore, a first magnet that fits the arc-shaped outer contour of the crucible is fixedly connected to the outer wall of the blocking rod on one side close to the crucible, and an iron ring is embedded in the outer wall of the top of the crucible at a position corresponding to the first magnet.

[0011] Furthermore, a rubber stopper that fits the arc-shaped outer contour of the crucible is hinged on the side wall of the friction block near one end of the pull rope, and a square groove is provided on the inner wall of the rubber stopper near the friction block. A first micro spring is arranged inside the square groove, and the end of the first micro spring away from the square groove is connected to the outer wall of the friction block.

[0012] Furthermore, one end of the two brackets away from the blocking rod is rotatably connected to a guide wheel.

[0013] Furthermore, a closing component is provided on the outer wall of the bottom end of the lower hopper and located above the crucible, and the closing component includes a sliding rod fixedly connected to the outer wall of the bottom end of the lower hopper, and a closing cover is slidably connected to the outer wall of the sliding rod and located on the outer side of the bottom end of the lower hopper, and a second magnet is fixedly connected to the outer wall of the top end of the sliding rod, and four rectangular grooves are evenly arranged on the inner wall of the bottom of the closing cover, and the four inner walls of the rectangular grooves are rotatably connected to flip plates, and the top of the bottom end of the closing cover is slidably connected to extension plates with the same number as the flip plates, and the top of the flip plate is hinged to the bottom of the extension plate, and a second micro spring is provided on the outer wall of the top end of the four flip plates, and the second micro spring is connected to the side wall of the rectangular groove at one end away from the flip plate.

[0014] Furthermore, an L-shaped rod is fixedly connected to the outer wall of the closing cover, and one end of the L-shaped rod away from the closing cover is fixedly connected to the top of the side of the blocking rod away from the vertical rod.

[0015] Furthermore, four slide rails are evenly and fixedly connected to the top of the frame in a rectangular orientation, and the outer walls of the four slide rails are slidably connected to conveying roller components. The crucible is placed on the surface of the conveying roller component, and a supporting spring group is arranged at the bottom of the conveying roller component, and the bottom of the supporting spring group is connected to the inner wall of the top of the frame.

[0016] Beneficial Effects

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with an auxiliary positioning mechanism. After the outer walls on both sides of the crucible contact with the protruding parts of the friction blocks, under the action of a relatively large friction force, the friction blocks are combined with the crucible to achieve the purpose of synchronous movement, so that the friction blocks slide on the outer wall of the cross bar in the direction of the crucible and stretch the reset spring. Since the length of the pull rope is fixed, the pull rope cooperates with the roller to produce displacement along with the movement of the friction block. Under the action of the baffle rod's own weight, when the gravity of the baffle rod is greater than the pulling force of the pull rope, the pull rope will cooperate with the roller to lower the baffle rod, so that the baffle rod will slide downward on the outer wall of the vertical rod. When the baffle rod descends to a position below the crucible opening, the conveying roller component stops rotating synchronously, so that the crucible contacts one side of the outer wall of the baffle rod, and then the crucible can be limited in the direction of the crucible, so that the crucible can be accurately stopped below the bottom opening of the lower hopper, thereby reducing the probability of leakage during filling of the negative electrode material and avoiding pollution of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of a local structure of an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the relevant structure of the conveying roller component of an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the relevant structure of the support frame of an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the relevant structure of the crucible of an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of a partial cross-sectional structure of a sealing cover according to an embodiment of the present invention;

[0026] Figure 7 For the embodiment of the present invention Figure 6 A is an enlarged schematic diagram of the three-dimensional structure;

[0027] Figure 8It is a schematic diagram of the relevant structure of the friction block of an embodiment of the present invention;

[0028] Fig. 9 The figure is a schematic diagram of the related structure of the rubber stopper according to an embodiment of the present invention.

[0029] The numbers in the figure represent respectively: 1, frame; 101, crucible; 102, support frame; 2, silo; 3, lower hopper; 401, bracket; 41, cross bar; 402, friction block; 403, vertical pole; 44, limit block; 404, stop bar; 405, roller; 406, pull rope; 407, reset spring; 501, first magnet; 502, iron ring; 601, rubber stop block; 602, square groove; 603, first micro spring; 701, guide wheel; 801, slide bar; 802, closing cover; 803, second magnet; 804, rectangular groove; 805, flip plate; 806, extension plate; 807, second micro spring; 88, L-shaped rod; 901, slide rail; 902, conveying roller component; 903, support spring group. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention will be further described below in conjunction with the embodiments.

[0032] Example:

[0033] See also Figure 1-Figure 9 The present invention provides a technical solution: an automatic feeding and filling system for new energy lithium battery negative electrode materials, comprising a frame 1 and a silo 2, the outer walls on both sides of the frame 1 are symmetrically fixedly connected with support frames 102, the silo 2 is fixedly connected to the top of the support frame 102, the bottom of the silo 2 is fixedly connected with a lower hopper 3, a crucible 101 is placed above the top of the frame 1 and below the bottom opening of the lower hopper 3, and auxiliary positioning mechanisms are symmetrically arranged on the top side walls of the two support frames 102;

[0034] The auxiliary positioning mechanism includes a bracket 401 fixedly connected to the top side wall of the support frame 102, a cross bar 41 is fixedly connected to the outer wall of the middle part of the side of the bracket 401 close to the crucible 101, a friction block 402 is slidably connected to the outer wall of the cross bar 41, a vertical rod 403 is fixedly connected to the top of one end of the cross bar 41 away from the friction block 402, a limited block 44 is fixedly connected to the outer wall of one end of the cross bar 41 close to the vertical rod 403, a baffle 404 is slidably connected to the outer wall of the vertical rod 403, a roller 405 is rotatably connected to the outer wall of the top of the vertical rod 403 and located above the baffle 404, a pull rope 406 is fixedly connected to the top of the friction block 402, and the end of the pull rope 406 away from the friction block 402 is fixedly connected to the top of the baffle 404 via the roller 405, and a return spring 407 is provided at the end of the friction block 402 away from the pull rope 406, and the end of the return spring 407 away from the friction block 402 is connected to the side wall of the end of the cross bar 41;

[0035] A first magnet 501 that fits the arc-shaped outer contour of the crucible 101 is fixedly connected to the outer wall of the blocking rod 404 close to the crucible 101, and an iron ring 502 is embedded in the outer wall of the top of the crucible 101 at a position corresponding to the first magnet 501;

[0036] A rubber stopper 601 that fits the arc-shaped outer contour of the crucible 101 is hinged on the side wall of the friction block 402 near the pull rope 406. A square groove 602 is provided on the inner wall of the rubber stopper 601 near the friction block 402. A first micro spring 603 is arranged inside the square groove 602. One end of the first micro spring 603 away from the square groove 602 is connected to the outer wall of the friction block 402. One end of the two brackets 401 away from the blocking rod 404 is rotatably connected to a guide wheel 701.

[0037] The outer wall of the bottom end of the lower hopper 3 is provided with a closing component located above the crucible 101, and the closing component includes a slide bar 801 fixedly connected to the outer wall of the bottom end of the lower hopper 3, and the outer wall of the slide bar 801 is slidably connected to a closing cover 802 located outside the bottom end of the lower hopper 3, and the outer wall of the top end of the slide bar 801 is fixedly connected to a second magnet 803, and the inner wall of the bottom of the closing cover 802 is evenly provided with four rectangular grooves 804, and the inner walls of the four rectangular grooves 804 are all rotatably connected to a flip plate 805, and the top of the bottom end of the closing cover 802 The outer wall of the top of the four flip plates 805 is provided with a second micro spring 807, and the end of the second micro spring 807 away from the flip plate 805 is connected to the side wall of the rectangular groove 804. The outer wall of the closed cover 802 is fixedly connected with an L-shaped rod 88, and the end of the L-shaped rod 88 away from the closed cover 802 is fixedly connected to the top of the side of the blocking rod 404 away from the vertical rod 403.

[0038] Four slide rails 901 are evenly and fixedly connected to the top of the frame 1 in a rectangular orientation. The outer walls of the four slide rails 901 are slidably connected to conveying roller components 902. The crucible 101 is placed on the surface of the conveying roller component 902. A supporting spring group 903 is arranged at the bottom of the conveying roller component 902. The bottom of the supporting spring group 903 is connected to the inner wall of the top of the frame 1.

[0039] In combination with the above preferred embodiments, the working principle of the present invention is as follows:

[0040] When working:

[0041] The crucible 101 is clamped by a manipulator and placed steadily on the surface of the conveying roller component 902. In the initial state, the weight of the crucible 101 itself is less than the supporting force of the supporting spring group 903 on the conveying roller component 902, so that the conveying roller component 902 remains stationary between the outer walls of the four slide rails 901. The conveying roller component 902 is driven by electricity to rotate at a constant speed, and the crucible 101 can be conveyed to the area below the lower hopper 3. In addition, when the crucible 101 is placed on the surface of the conveying roller component 902 by the manipulator, there will be a position deviation due to external reasons. When the crucible 101 enters between the two brackets 401, the crucible 101 is moved to the lower hopper 3. Before the crucible 101 enters the area between the two brackets 401, its outer wall will first contact the guide wheel 701. Since two guide wheels 701 are symmetrically arranged, the crucible 101 in the position deviation state will contact the surface of the adjacent guide wheel 701. As the crucible 101 continues to be transported on the surface of the conveying roller component 902, the adjacent guide wheels 701 push the crucible 101, so that the crucible 101 can smoothly enter the area between the two brackets 401. After the pre-correction of the placement position is completed, it is convenient for the crucible 101 to be accurately filled with negative electrode materials later. Compared with the manual adjustment method, not only the adjustment accuracy is high, but also the labor is reduced;

[0042] When the crucible 101 is located between the two brackets 401, the outer walls on both sides of the crucible 101 will contact the protruding parts of the friction blocks 402, and the protruding parts of the friction blocks 402 are made of rubber. Under the action of a large friction force, the friction blocks 402 and the crucible 101 are combined to achieve the purpose of synchronous movement. The friction blocks 402 are used to slide on the outer wall of the cross bar 41 in the direction of the crucible 101 and stretch the reset spring 407. Since the length of the pull rope 406 is fixed, the pull rope 406 cooperates with the roller 405 to produce displacement along with the movement of the friction block 402. Under the action of the weight of the blocking rod 404 itself, when the gravity of the blocking rod 404 is greater than the pulling force of the pull rope 406, the pull rope 406 cooperates with the roller 405 to lower the blocking rod 404, so that the blocking rod 404 will slide downward on the outer wall of the vertical rod 403. When the blocking rod 404 is lowered to a position below the opening of the crucible 101, the conveying roller part The first magnet 501 is provided, and an iron ring 502 is embedded in the outer wall of the top of the crucible 101. Under the action of magnetic force, the first magnet 501 can be adsorbed with the iron ring 502, so that the inertia of the crucible 101 can be reduced. The stability of the placement of the crucible 101 is reduced, and the crucible 101 is prevented from tipping over, which is conducive to the crucible 101 always being in a vertical state on the surface of the conveying roller component 902. By providing a limit block 44, the sliding distance of the friction block 402 on the outer wall of the cross bar 41 is limited, and after the crucible 101 stops moving, the friction block 402 can be in a stationary state, thereby improving the stability of the crucible 101.

[0043] By setting the rubber stopper 601, the contact area with the outer wall of the crucible 101 can be increased in cooperation with the protruding part of the friction block 402, so as to better realize the synchronous movement of the friction block 402 and the crucible 101, and when the crucible 101 moves toward the side of the blocking rod 404, under the support of the first micro spring 603, the rubber stopper 601 can fit with the outer wall of the crucible 101, and when the crucible 101 needs to continue to move to the next process after the filling of the crucible 101 is completed, since the rubber stopper 601 is hingedly arranged and the supporting force of the first micro spring 603 on the rubber stopper 601 is less than the pushing force of the crucible 101 after filling on the rubber stopper 601, the rubber stopper 601 begins to flip toward the side of the friction block 402 and squeezes the first micro spring 603 synchronously, and at the same time, when the rubber stopper 601 is separated from the contact with the crucible 101, under the rebound action of the first micro spring 603, it is convenient for the rubber stopper 601 to be used next time;

[0044] The stopper rod 404 is used to synchronously lower the height with the L-shaped rod 88, so that the downward pulling force on the closing cover 802 is greater than the suction force of the second magnet 803 on the closing cover 802. The closing cover 802 is separated from the second magnet 803, and the closing cover 802 slides downward on the outer wall of the slide bar 801. The second magnet 803 can be arranged to assist in fixing the closing cover 802 in its initial state, so as to prevent the closing cover 802 from falling before filling. As the closing cover 802 continues to descend in height and finally penetrates into the opening of the crucible 101, the flip plate 805 will first contact the top of the opening of the crucible 101. The flip plate 805 is hinged, so that the flip plate 805 flips in the clockwise direction and slides the extension plate 806 in the flipping direction of the flip plate 805, and the second micro spring 807 is stretched synchronously. The extended extension plate 806 is used to cooperate with the bottom diameter of the closing cover 802 in the initial state, thereby increasing the closing range of the crucible 101 opening, and achieving a better closing effect during the filling process. Under the action of the closing cover 802, the lower hopper 3 can be connected with the crucible 101 to form a closed channel, thereby reducing the probability of negative electrode material overflowing when the silo 2 cooperates with the lower hopper 3 to fill the material.

[0045] When the crucible 101 is filled with negative electrode material, its own weight will increase again, thereby exceeding the supporting force of the support spring group 903 on the conveying roller component 902, causing the conveying roller component 902 to slide downward on the outer wall of the slide rail 901, thereby making the opening height of the filled crucible 101 lower than the baffle 404, and making the closing cover 802 separate from the opening of the crucible 101, and at the same time, the first magnet 501 separates from the iron ring 502, and as the conveying roller component 902 restarts, the crucible 101 continues to move and separates from the protruding part of the friction block 402 and the rubber baffle 601, and at this time, the friction block 402 is reset under the rebound action of the reset spring 407, and the pull rope 406 and the baffle 404 are also reset synchronously, which is convenient for reuse.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic feeding and filling system for new energy lithium battery negative electrode materials, characterized in that: The invention comprises a frame (1) and a silo (2), wherein the outer walls on both sides of the frame (1) are symmetrically fixedly connected with support frames (102), the silo (2) is fixedly connected to the top of the support frames (102), the bottom of the silo (2) is fixedly connected with a lower hopper (3), a crucible (101) is placed above the top of the frame (1) and below the bottom opening of the lower hopper (3), and auxiliary positioning mechanisms are symmetrically arranged on the top side walls of the two support frames (102); The auxiliary positioning mechanism comprises a bracket (401) fixedly connected to the top side wall of the support frame (102); a cross bar (41) is fixedly connected to the outer wall of the middle part of the side of the bracket (401) close to the crucible (101); a friction block (402) is slidably connected to the outer wall of the cross bar (41); a vertical rod (403) is fixedly connected to the top of one end of the cross bar (41) away from the friction block (402); a limit block (44) is fixedly connected to the outer wall of one end of the cross bar (41) close to the vertical rod (403); and a stop block (44) is slidably connected to the outer wall of the vertical rod (403). Rod (404), the top outer wall of the vertical rod (403) and located above the blocking rod (404) is rotatably connected with a roller (405), the top of the friction block (402) is fixedly connected with a pull rope (406), the end of the pull rope (406) away from the friction block (402) is fixedly connected to the top of the blocking rod (404) via the roller (405), the end of the friction block (402) away from the pull rope (406) is provided with a return spring (407), and the end of the return spring (407) away from the friction block (402) is connected to the side wall of the end of the cross bar (41).

2. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 1 is characterized in that: A first magnet (501) that fits the arc-shaped outer contour of the crucible (101) is fixedly connected to the outer wall of the blocking rod (404) on one side close to the crucible (101), and an iron ring (502) is embedded in the outer wall of the top end of the crucible (101) at a position corresponding to the first magnet (501).

3. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 1 is characterized in that: A rubber stopper (601) is hingedly connected to the side wall of one end of the friction block (402) close to the pull rope (406), and the rubber stopper (601) is fitted with the arc-shaped outer contour of the crucible (101). A square groove (602) is provided on the inner wall of the rubber stopper (601) close to the friction block (402). A first micro spring (603) is arranged inside the square groove (602), and one end of the first micro spring (603) away from the square groove (602) is connected to the outer wall of the friction block (402).

4. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 1 is characterized in that: One end of the two brackets (401) away from the blocking rod (404) is rotatably connected to a guide wheel (701).

5. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 1 is characterized in that: A sealing component is arranged on the outer wall of the bottom end of the lower hopper (3) and located above the crucible (101), and the sealing component includes a slide bar (801) fixedly connected to the outer wall of the bottom end of the lower hopper (3), and a sealing cover (802) is slidably connected to the outer wall of the slide bar (801) and located outside the bottom end of the lower hopper (3), and a second magnet (803) is fixedly connected to the outer wall of the top end of the slide bar (801), and four rectangular grooves (804) are evenly arranged on the inner wall of the bottom of the sealing cover (802), and the four rectangular grooves (804) are arranged on the inner wall of the bottom of the sealing cover (802). The inner walls of the rectangular grooves (804) are rotatably connected with flip plates (805); the top of the bottom end of the closing cover (802) is slidably connected with extension plates (806) of the same number as the flip plates (805); the top of the flip plates (805) is hinged to the bottom of the extension plates (806); the outer walls of the top ends of the four flip plates (805) are each provided with a second micro spring (807); and one end of the second micro spring (807) away from the flip plate (805) is connected to the side wall of the rectangular groove (804).

6. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 5 is characterized in that: An L-shaped rod (88) is fixedly connected to the outer wall of the closing cover (802), and one end of the L-shaped rod (88) away from the closing cover (802) is fixedly connected to the top of the side of the blocking rod (404) away from the vertical rod (403).

7. The automatic feeding and filling system for new energy lithium battery negative electrode materials according to claim 1 is characterized in that: The top of the frame (1) is evenly and fixedly connected with four slide rails (901) in a rectangular orientation, and the outer walls of the four slide rails (901) are slidably connected with conveying roller components (902). The crucible (101) is placed on the surface of the conveying roller component (902), and a supporting spring group (903) is arranged at the bottom of the conveying roller component (902), and the bottom of the supporting spring group (903) is connected to the inner wall of the top of the frame (1).

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