Graphite negative electrode shaping device and shaping method for lithium battery

Abstract

The application discloses a kind of lithium battery graphite negative shaping equipment and shaping method, equipment includes box, the box top wall is fixedly connected with cylindrical shell, the cylindrical shell rear wall is fixedly connected with feed hopper, the cylindrical shell is installed with roll-pressing mechanism, the cylindrical shell front wall is rotatably installed with side door corresponding roll-pressing mechanism position, the movable end of the side door is connected with the cylindrical shell side wall by snap, the present application relates to battery graphite shaping technical field;The roll-pressing mechanism of the present application can be initially rolled and crushed to graphite powder, the rolling distance can be adjusted according to actual needs, and the adhered graphite powder can be scraped after rolling and crushing, to avoid waste caused by graphite powder adhering to the roll-pressing mechanism, the scraper is provided to scrape the graphite powder adhering to the side wall of the roll-pressing roller, to ensure that the graphite powder can be effectively collected, while avoiding damage to the device caused by graphite powder adhering for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery graphite shaping, in particular to a lithium battery graphite negative electrode shaping device and method. BACKGROUND

[0002] The shaping machine is mainly used for providing mechanical energy to lithium battery graphite negative electrode particles, and the particles are subjected to impact crushing and then spheroidization treatment to reduce the edges and corners of the material and improve the sphericity, thereby controlling the morphology of the particles, realizing fine classification and spheroidization of the particles, and further improving the filling capacity and performance of the product.

[0003] However, in the use process of the existing shaping machine, the graphite powder crushed and ground is easy to adhere to the inside of the device, so that part of the graphite powder cannot be collected, causing resource waste, and the long-term adhesion of the graphite powder may cause damage to the device, and the existing shaping machine needs to be manually poured into the device again for re-shaping after screening out unqualified graphite powder, which is cumbersome to operate.

[0004] Therefore, the present application provides a lithium battery graphite negative electrode shaping device and method, which solves the above problems by setting the grinding mechanism, rolling mill, grinding and screening mechanism and other structures. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a lithium battery graphite negative electrode shaping device and method, which solves the above problems.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: a lithium battery graphite negative electrode shaping device, comprising a box body, a cylindrical shell is fixedly connected to the top wall of the box body, a feed hopper is fixedly connected to the rear wall of the cylindrical shell, a rolling mechanism is installed in the cylindrical shell, a side door is rotatably installed on the front wall of the cylindrical shell corresponding to the position of the rolling mechanism, the movable end of the side door is clamped with the cylindrical shell side wall through a hasp, two rolling mills are rotatably installed on the upper part of the inner cavity of the box body, two inclined plates are fixed on the top of the side wall of the box body, the shafts of the rear ends of the two rolling mills are both penetrated through the rear wall of the box body through bearings and fixedly connected with transmission gears, the two transmission gears are connected with each other through meshing, a No. three motor is fixed on the front wall of the box body, the power shaft of the No. three motor is penetrated through the front wall of the box body through a bearing and fixedly connected with the shaft center position of any one of the rolling mills, a scraper is fixed on the side wall of the inner cavity of the box body corresponding to the position of the rolling mill, the scraper is in close contact with the side wall of the corresponding rolling mill, a grinding and screening mechanism is fixed in the middle of the inner cavity of the box body, and a collection box is inserted into the bottom of the front wall of the box body.

[0007] Preferably, a protective shell is fixed on the rear wall of the box body corresponding to the position of the two transmission gears.

[0008] Preferably, the rolling mechanism comprises a cylinder fixed on the top wall of the cylindrical shell, a movable end of the bottom of the cylinder slidingly penetrating the top wall of the cylindrical shell and fixed with an upper grinding disc, a lower grinding disc rotatingly installed on the inner wall of the cylindrical shell through a bearing and matched with the upper grinding disc, a sleeve rotatingly installed on the top of the central part of the upper grinding disc, the sleeve sleeved on the outside of the cylinder, an adjusting rod fixed on the top of the side wall of the sleeve, a scraping rod fixed on the other end of the adjusting rod, and a receiving groove for receiving the scraping rod formed on the side wall of the upper grinding disc.

[0009] Preferably, one side of the top wall of the upper grinding disc is fixed with a first motor, a power shaft of the top of the first motor is fixed with a first gear, the upper part of the side wall of the sleeve is fixed with a first external gear ring, the first gear is connected with the first external gear ring in meshing mode, the first external gear ring is located below the adjusting rod, the bottom of the side wall of the inner cavity of the cylindrical shell is fixed with a second motor, a power shaft of the bottom of the second motor is fixed with a second gear, the bottom of the outer wall of the lower grinding disc is fixed with a second external gear ring, and the second external gear ring is connected with the second gear in meshing mode.

[0010] Preferably, the feeding hopper is located at one end of the cylindrical shell and corresponds to the gap between the upper grinding disc and the lower grinding disc.

[0011] Preferably, the adjusting rod comprises a fixed rod fixed on the outer wall of the sleeve, a rectangular groove is formed in the fixed rod, a rectangular block is slidingly installed in the rectangular groove, a movable rod is fixed on the side wall of the rectangular block, the movable rod slidingly penetrates one end of the fixed rod, a threaded sleeve is rotatingly installed on the end of the fixed rod away from the sleeve, a thread is formed on the outer wall of the movable rod, and the movable rod is screwed with the threaded sleeve.

[0012] Preferably, the grinding and screening mechanism comprises an outer shell fixed between the inner walls of the box body, the bottom of the outer shell is conically arranged, a transmission cylinder is installed in the central part of the inner cavity of the outer shell, the bottom end of the transmission cylinder is fixedly connected with the bottom wall of the inner cavity of the outer shell through a plurality of vertical rods, a screw conveyor is rotatingly installed in the central part of the inner cavity of the transmission cylinder, a fourth motor is fixed on the bottom wall of the outer shell, a power shaft of the top of the fourth motor penetrates the bottom wall of the outer shell through a bearing and is fixedly connected with the bottom end of the screw conveyor, a plurality of screen holes are uniformly formed on the bottom wall of the outer shell, and a plurality of steel balls are filled in the outer shell.

[0013] Preferably, a handle is fixed on the front wall of the collecting box.

[0014] Preferably, a method for shaping graphite negative electrode of lithium battery comprises the following steps:

[0015] Step one: adjusting the distance between the upper grinding disc and the lower grinding disc according to actual needs, controlling the extension and contraction of the cylinder, and adjusting the position of the upper grinding disc;

[0016] Step two: turning on the switches of the second motor, the third motor and the fourth motor, and adding graphite powder to be shaped into the feeding hopper;

[0017] Step three: the second motor drives the lower grinding disc to rotate through the second gear and the second outer tooth ring, and the graphite powder is preliminarily crushed when passing through the gap between the upper grinding disc and the lower grinding disc;

[0018] Step four: the preliminarily crushed graphite powder falls into the space between the two crushing rollers through the bottom of the lower grinding disc, and the third motor drives one of the crushing rollers to rotate, and the current crushing roller drives the other crushing roller to rotate through the transmission gear, so as to further crush the graphite powder;

[0019] Step five: the graphite powder crushed by the crushing roller falls into the shell, the fourth motor drives the auger to rotate, and the graphite powder and steel balls in the shell enter the transmission cylinder through the gap between the shell and the transmission cylinder, the auger drives the graphite powder and steel balls to move upwards along the transmission cylinder, and the steel balls roll to grind the graphite powder in the upward movement process, and the edges and corners of the graphite particles on the surface are removed, and when the steel balls and graphite powder move to the highest position of the transmission cylinder, they fall to the bottom of the inner cavity of the shell, and the steel balls hit the bottom wall of the shell to generate vibration, so that the qualified graphite powder falls into the collection box through the screen hole for collection, and the graphite powder that cannot pass through the screen hole is recycled into the transmission cylinder for grinding until it can pass through the screen hole smoothly.

[0020] Beneficial effects

[0021] The application provides a lithium battery graphite negative electrode shaping device and a shaping method.

[0022] (1) The lithium battery graphite negative electrode shaping device and the shaping method can preliminarily crush the graphite powder through the set crushing mechanism, can adjust the crushing distance according to actual needs, can scrape off the adhered graphite powder after the crushing and grinding are completed, avoid the waste caused by the adhesion of the graphite powder on the crushing mechanism, can scrape off the graphite powder adhered to the side wall of the crushing roller through the set scraper, can ensure that the graphite powder can be effectively collected, and can avoid the damage caused by the long-term adhesion of the graphite powder to the device.

[0023] (2) The lithium battery graphite negative electrode shaping device and the shaping method can grind and crush the graphite powder through the set grinding and screening mechanism, can remove the edges and corners of the graphite particles on the surface, can screen the qualified graphite powder into the collection box, and can recycle the unqualified graphite powder for grinding and screening until the graphite powder is qualified, so that the structure is simple, the operation is convenient, and the shaping effect of the graphite powder is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the external front side structure of the application;

[0025] Figure 2is the external rear structure perspective view of the present application;

[0026] Figure 3 is the internal structure perspective view of the cylindrical shell of the present application;

[0027] Figure 4 is the upper grinding disc structure perspective view of the present application;

[0028] Figure 5 is the sectional view of the adjusting rod of the present application;

[0029] Figure 6 is the internal structure perspective view of the box of the present application;

[0030] Figure 7 is the internal structure perspective view of the protective shell of the present application;

[0031] Figure 8 is the semi-sectional view of the grinding and screening mechanism structure of the present application.

[0032] Fig. 1, the box; 2, the cylindrical shell; 3, the feeding hopper; 4, the rolling mechanism; 41, the air cylinder; 42, the upper grinding disc; 43, the sleeve; 44, the adjusting rod; 441, the fixed rod; 442, the rectangular groove; 443, the rectangular block; 444, the movable rod; 445, the threaded sleeve; 45, the scraping rod; 46, the storage groove; 47, the first motor; 48, the first gear; 49, the first external gear ring; 410, the lower grinding disc; 411, the second motor; 412, the second gear; 413, the second external gear ring; 5, the side door; 6, the buckle; 7, the rolling roller; 8, the inclined plate; 9, the transmission gear; 10, the protective shell; 11, the third motor; 12, the scraper; 13, the grinding and screening mechanism; 131, the shell; 132, the vertical rod; 133, the transmission cylinder; 134, the auger; 135, the fourth motor; 136, the screen hole; 14, the collection box. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0034] Embodiment one:

[0035] Please refer to Figures 1-8The utility model provides a kind of lithium battery graphite negative electrode shaping equipment, including box 1, the top wall of box 1 is fixedly connected with cylindrical shell 2, the rear wall of cylindrical shell 2 is fixedly connected with feed hopper 3, grinding mechanism 4 is installed in cylindrical shell 2, side door 5 is rotatably installed in cylindrical shell 2 front wall corresponding grinding mechanism 4 position, the movable end of side door 5 is clamped with the lateral wall of cylindrical shell 2 by snap 6, two grinding rollers 7 are rotatably installed in the upper portion of the inner cavity of box 1 symmetrically, two inclined plates 8 are fixed on the top of the lateral wall of the inner cavity of box 1 symmetrically, the shaft of the rear end of two grinding rollers 7 is all penetrated through the rear wall of box 1 by bearing and fixed with transmission gear 9, two transmission gears 9 are connected with each other, No.

[0036] In the embodiment, the feed hopper 3 is provided for adding graphite powder to be shaped, the grinding mechanism 4 is provided to preliminarily grind and crush the graphite powder, the grinding distance can be adjusted according to actual needs, and the adhered graphite powder can be scraped off after grinding and crushing, so as to avoid waste caused by the graphite powder adhering to the grinding mechanism 4, the side door 5 is provided for adjusting the scraping operation of the grinding mechanism 4, the grinding roller 7 is provided for further grinding and crushing the graphite powder, the No. 3 motor 11 drives one of the grinding rollers 7 to rotate, and the current grinding roller 7 drives the other grinding roller 7 to rotate through the transmission gear 9, so as to realize the grinding and crushing operation, the inclined plate 8 can ensure that the graphite powder can smoothly enter between the two grinding rollers 7, the scraper 12 can scrape off the graphite powder adhering to the side wall of the grinding roller 7, and the grinding and screening mechanism 13 can grind and crush the graphite powder, remove the edges and corners on the surface of the graphite particles, and screen the qualified graphite powder into the collecting box 14.

[0037] The rear wall of the box 1 is fixed with a protective shell 10 corresponding to the position of the two transmission gears 9. The front wall of the collecting box 14 is fixed with a handle.

[0038] In the embodiment, the protective shell 10 is provided to avoid the direct exposure of the transmission gear 9 to the external environment, to avoid injury caused by accidental touch by the staff, and the handle is provided to facilitate the extraction of the collecting box 14.

[0039] Example two:

[0040] Please refer to Figures 3-5The embodiment is based on embodiment one and provides a technical scheme that the rolling mechanism 4 comprises a cylinder 41 fixed on the top wall of the cylindrical shell 2, the movable end of the bottom of the cylinder 41 is slidably penetrated through the top wall of the cylindrical shell 2 and is fixed with an upper grinding disc 42, the inner wall of the cylindrical shell 2 is rotatably installed with a lower grinding disc 410 matched with the upper grinding disc 42, the top wall of the center of the upper grinding disc 42 is rotatably installed with a sleeve 43, the sleeve 43 is sleeved on the outside of the cylinder 41, the side wall of the top of the sleeve 43 is fixed with an adjusting rod 44, the other end of the adjusting rod 44 is fixed with a scraping rod 45, the side wall of the upper grinding disc 42 is provided with a receiving groove 46 for receiving the scraping rod 45. One side of the top wall of the upper grinding disc 42 is fixed with a first motor 47, the power shaft of the top of the first motor 47 is fixed with a first gear 48, the upper part of the side wall of the sleeve 43 is fixed with a first external gear ring 49, the first gear 48 is engaged with the first external gear ring 49, the first external gear ring 49 is below the adjusting rod 44, the bottom of the side wall of the inner cavity of the cylindrical shell 2 is fixed with a second motor 411, the power shaft of the bottom of the second motor 411 is fixed with a second gear 412, the bottom of the outer wall of the lower grinding disc 410 is fixed with a second external gear ring 413, and the second external gear ring 413 is engaged with the second gear 412.

[0041] The adjusting rod 44 comprises a fixed rod 441 fixed on the outer wall of the sleeve 43, a rectangular groove 442 is formed in the fixed rod 441, a rectangular block 443 is slidably installed in the rectangular groove 442, a movable rod 444 is fixed on the side wall of the rectangular block 443, the movable rod 444 is slidably penetrated through one end of the fixed rod 441, a threaded sleeve 445 is rotatably installed at the end of the fixed rod 441 away from the sleeve 43, a thread is formed on the outer wall of the movable rod 444, and the movable rod 444 is screwed with the threaded sleeve 445.

[0042] The rolling mechanism 4 set in the embodiment can preliminarily roll and crush the graphite powder, can adjust the rolling distance according to actual needs, and can scrape the adhered graphite powder after the rolling and crushing is completed, so as to avoid the waste caused by the graphite powder adhered on the rolling mechanism 4. When the rolling mechanism 4 works, the control cylinder 41 is extended and retracted to adjust the position of the upper grinding disc 42, so as to adjust the distance between the upper grinding disc 42 and the lower grinding disc 410, so that the rolling mechanism 4 can roll and crush graphite powder particles with different diameters. The second motor 411 drives the lower grinding disc 410 to rotate through the second gear 412 and the second outer gear ring 413, and the graphite powder is preliminarily rolled and crushed when passing through the gap between the upper grinding disc 42 and the lower grinding disc 410. The scraper 45 is arranged for scraping the side walls of the upper grinding disc 42 and the lower grinding disc 410. In the initial state, the scraper 45 is accommodated in the accommodation groove 46 and does not affect the rolling operation of the upper grinding disc 42 and the lower grinding disc 410. When the upper grinding disc 42 and the lower grinding disc 410 need to be cleaned, the control cylinder 41 is extended and retracted so that the distance between the upper grinding disc 42 and the lower grinding disc 410 is the same as the thickness of the scraper 45, then the side door 5 is opened, the threaded sleeve 445 is manually rotated, the threaded sleeve 445 drives the movable rod 444 to move outward until the scraper 45 moves out of the accommodation groove 46, at this time the scraper 45 is in contact with the side walls of the upper grinding disc 42 and the lower grinding disc 410 respectively, then the switch of the first motor 47 is turned on, the sleeve 43 is driven to rotate by the first gear 48 and the first outer gear ring 49, the sleeve 43 drives the scraper 45 to rotate through the adjusting rod 44, so as to scrape the graphite powder adhered on the side walls of the upper grinding disc 42 and the lower grinding disc 410, avoiding the waste of graphite powder.

[0043] Embodiment three:

[0044] Please refer to Figure 8 , the embodiment provides a technical scheme on the basis of embodiment one: the grinding and screening mechanism 13 comprises an outer shell 131 fixed between the inner walls of the box body 1, the bottom of the outer shell 131 is conical, a transmission cylinder 133 is installed in the central inner cavity of the outer shell 131, the bottom end of the transmission cylinder 133 is fixedly connected with the inner cavity bottom wall of the outer shell 131 through a plurality of vertical rods 132, a screw conveyor 134 is rotatably installed in the central inner cavity of the transmission cylinder 133, a fourth motor 135 is fixed on the bottom wall of the outer shell 131, the power shaft at the top of the fourth motor 135 penetrates the bottom wall of the outer shell 131 through a bearing and is fixedly connected with the bottom end of the screw conveyor 134, a plurality of screen holes 136 are uniformly arranged on the bottom wall of the outer shell 131, and a plurality of steel balls are filled in the outer shell 131.

[0045] In this embodiment, the grinding and screening mechanism 13 can grind and crush the graphite powder, remove the edges and corners on the surface of the graphite particles, and screen the qualified graphite powder into the collection box 14. When the grinding and screening mechanism 13 is working, the No. 4 motor 135 drives the auger 134 to rotate. The graphite powder and steel balls in the shell 131 enter the transmission cylinder 133 through the gap between the shell 131 and the transmission cylinder 133. The auger 134 drives the graphite powder and steel balls to move upwards along the transmission cylinder 133. The steel balls rotate and roll in a local range during the upward movement, which grinds and crushes the graphite powder and removes the edges and corners on the surface of the graphite particles. When the steel balls and graphite powder move to the highest point of the transmission cylinder 133, they fall back to the bottom of the inner cavity of the shell 131. When the steel balls fall to the bottom wall of the shell 131, they hit the bottom wall, which generates vibration, so that the qualified graphite powder falls through the screen hole 136 into the collection box 14 for collection. The graphite powder that cannot pass through the screen hole 136 is circulated into the transmission cylinder 133 for grinding until it can pass through the screen hole 136 smoothly, ensuring the shaping effect of the graphite powder.

[0046] Meanwhile, the contents not described in detail in the specification are all prior art known to those skilled in the art.

[0047] A method for shaping a graphite negative electrode of a lithium battery, comprising the following steps:

[0048] Step one: adjust the distance between the upper grinding disc 42 and the lower grinding disc 410 according to actual needs, control the extension and retraction of the air cylinder 41, and adjust the position of the upper grinding disc 42;

[0049] Step two: turn on the switches of the No. 2 motor 411, the No. 3 motor 11 and the No. 4 motor 135, and add the graphite powder to be shaped into the feed hopper 3;

[0050] Step three: the No. 2 motor 411 drives the lower grinding disc 410 to rotate through the No. 2 gear 412 and the No. 2 outer gear ring 413, and the graphite powder is preliminarily crushed and ground when passing through the gap between the upper grinding disc 42 and the lower grinding disc 410;

[0051] Step four: the preliminarily crushed and ground graphite powder falls between the two crushing rollers 7 through the bottom of the lower grinding disc 410. The No. 3 motor 11 drives one of the crushing rollers 7 to rotate, and the current crushing roller 7 drives the other crushing roller 7 to rotate through the transmission gear 9, thereby further crushing and grinding the graphite powder;

[0052] Step five: the graphite powder after being crushed by the crushing roller 7 falls into the shell 131, the No. 4 motor 135 drives the auger 134 to rotate, the graphite powder and the steel balls in the shell 131 enter the transmission cylinder 133 through the gap between the shell 131 and the transmission cylinder 133, the auger 134 drives the graphite powder and the steel balls to move upwards along the transmission cylinder 133, the steel balls roll during the upward movement to grind and crush the graphite powder, at the same time, the edges and corners on the surface of the graphite particles are removed, when the steel balls and the graphite powder move to the highest position of the transmission cylinder 133, they fall to the bottom of the inner cavity of the shell 131, when the steel balls fall to the bottom wall of the shell 131, they hit the bottom wall of the shell 131 to generate vibration, so that the qualified graphite powder falls into the collecting box 14 through the sieve hole 136 for collection, the graphite powder that cannot pass through the sieve hole 136 is circulated into the transmission cylinder 133 for grinding until it can pass through the sieve hole 136 smoothly.

[0053] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0054] Although the embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A lithium battery graphite negative electrode shaping apparatus comprising a box (1), characterized in that: The box (1) top wall fixed communication has a cylindrical shell (2), the cylindrical shell (2) rear wall fixed communication has a feed hopper (3), the cylindrical shell (2) is installed in the rolling mechanism (4), the cylindrical shell (2) front wall corresponding rolling mechanism (4) position rotary installation has side door (5), the movable end of side door (5) is through the snap (6) and the cylindrical shell (2) side wall clamping, the box (1) inner chamber upper portion symmetry rotary installation has two rolling mill (7), the box (1) inner chamber side wall top symmetry fixed two inclined plate (8), two rolling mill (7) rear end's pivot is all through the bearing and fixed transmission gear (9) of the box (1) rear wall, two transmission gear (9) intermeshing connection, the box (1) front wall is fixed with three motor (11), the power shaft of three motor (11) is through the bearing and fixed connection the axle position of any one rolling mill (7) of the box (1) front wall, the box (1) inner chamber side wall corresponding rolling mill (7) position fixed has scraper (12), the scraper (12) and corresponding rolling mill (7) side wall are in close contact, the box (1) inner chamber middle part is fixed with grinding screening mechanism (13), the box (1) front wall bottom is inserted with collection box (14); The grinding screening mechanism (13) includes a housing (131) fixed between the inner walls of the box (1), the bottom of the housing (131) is tapered, a transmission cylinder (133) is installed in the inner cavity of the housing (131), the bottom end of the transmission cylinder (133) is fixedly connected to the inner cavity bottom wall of the housing (131) through a plurality of vertical rods (132), a auger (134) is rotatably installed in the inner cavity of the transmission cylinder (133), a No. 4 motor (135) is fixed to the bottom wall of the housing (131), the power shaft at the top of the No. 4 motor (135) penetrates the bottom wall of the housing (131) through a bearing and is fixedly connected to the bottom end of the auger (134), a plurality of screen holes (136) are uniformly formed in the bottom wall of the housing (131), and a plurality of steel balls are filled in the housing (131).

2. The lithium battery graphite negative electrode shaping apparatus according to claim 1, characterized in that: The box (1) rear wall corresponding two transmission gear (9) position fixed have protection shell (10).

3. The lithium battery graphite negative electrode shaping apparatus according to claim 1, characterized in that: The rolling mechanism (4) includes a cylinder (41) fixed to the top wall of the cylindrical shell (2), the movable end of the bottom of the cylinder (41) slides through the top wall of the cylindrical shell (2) and is fixed with an upper grinding disc (42), the inner wall of the cylindrical shell (2) is rotatably installed with a lower grinding disc (410) matched with the upper grinding disc (42), the top wall of the upper grinding disc (42) is rotatably installed with a sleeve (43), the sleeve (43) is sleeved outside the cylinder (41), the side wall top of the sleeve (43) is fixed with an adjusting rod (44), the other end of the adjusting rod (44) is fixed with a scraping rod (45), the side wall of the upper grinding disc (42) is provided with a receiving groove (46) for receiving the scraping rod (45).

4. The lithium battery graphite negative electrode shaping apparatus according to claim 3, characterized in that: The upper grinding disc (42) is fixed with a first motor (47) on one side of the top wall, a power shaft of the first motor (47) is fixed with a first gear (48) on the top, a first external gear ring (49) is fixed on the upper part of the side wall of the sleeve (43), the first gear (48) is connected with the first external gear ring (49) in meshing mode, the first external gear ring (49) is located below the adjusting rod (44), a second motor (411) is fixed on the bottom of the side wall of the inner cavity of the cylindrical shell (2), a power shaft of the second motor (411) is fixed with a second gear (412) at the bottom end, a second external gear ring (413) is fixed on the bottom of the outer wall of the lower grinding disc (410), and the second external gear ring (413) is connected with the second gear (412) in meshing mode.

5. The lithium battery graphite negative electrode shaping apparatus according to claim 3, characterized in that: The feeding hopper (3) is located in the gap between the upper grinding disc (42) and the lower grinding disc (410) in one end of the cylindrical shell (2).

6. The lithium battery graphite negative electrode shaping apparatus according to claim 3, characterized in that: The adjusting rod (44) comprises a fixed rod (441) fixed on the outer wall of the sleeve (43), a rectangular groove (442) is formed in the fixed rod (441), a rectangular block (443) is slidably installed in the rectangular groove (442), a movable rod (444) is fixed on the side wall of the rectangular block (443), the movable rod (444) slidably penetrates one end of the fixed rod (441), a threaded sleeve (445) is rotatably installed on the end of the fixed rod (441) away from the sleeve (43), and threads are formed in the outer wall of the movable rod (444).

7. The lithium battery graphite negative electrode shaping apparatus according to claim 1, characterized in that: A handle is fixed on the front wall of the collecting box (14).

8. A method of shaping a lithium battery graphite negative electrode, characterized by: The lithium battery graphite negative electrode shaping device comprises the following steps: Step one: according to actual needs, the distance between the upper grinding disc (42) and the lower grinding disc (410) is adjusted, the air cylinder (41) is controlled to extend or retract, and the position of the upper grinding disc (42) is adjusted; Step two: the switches of the second motor (411), the third motor (11) and the fourth motor (135) are turned on, and the graphite powder to be shaped is added into the feeding hopper (3); Step three: the second motor (411) drives the lower grinding disc (410) to rotate through the second gear (412) and the second external gear ring (413), and the graphite powder is preliminarily crushed when passing through the gap between the upper grinding disc (42) and the lower grinding disc (410); Step four: the preliminarily crushed graphite powder falls between the two crushing rollers (7) through the bottom of the lower grinding disc (410), the third motor (11) drives one of the crushing rollers (7) to rotate, and the current crushing roller (7) drives the other crushing roller (7) to rotate through the transmission gear (9), so that the graphite powder is further crushed. Step five: the crushed graphite powder falls into the shell (131) through the crushing roller (7), the fourth motor (135) drives the auger (134) to rotate, the graphite powder and steel balls in the shell (131) enter the transmission cylinder (133) through the gap between the shell (131) and the transmission cylinder (133), the auger (134) drives the graphite powder and steel balls to move upwards along the transmission cylinder (133), the rolling of the steel balls during the upward movement grinds and crushes the graphite powder, at the same time, the edges and corners on the surface of the graphite particles are removed, when the steel balls and graphite powder move to the highest point of the transmission cylinder (133), they fall to the bottom of the inner cavity of the shell (131) again, when the steel balls fall to the bottom wall of the shell (131), they hit the bottom wall of the shell (131) to produce vibration, so that the qualified graphite powder falls into the collection box (14) through the sieve hole (136) for collection, the graphite powder that cannot pass through the sieve hole (136) is circulated into the transmission cylinder (133) for grinding until it can pass through the sieve hole (136) smoothly.

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