A horizontal pulling mechanism, lithium battery negative electrode material production line and method

Abstract

The present invention provides a horizontal pulling mechanism, a production line for lithium battery negative electrode materials, and a method. The horizontal pulling mechanism includes a first base and a telescopic member installed on the first base and capable of extending and retracting along the length direction X of the first base. A telescopic frame is connected to the power output end of the telescopic member. A hook is hinged in the telescopic frame. The side of the telescopic frame away from the telescopic member is a baffle. One side of the hook is provided with a first limiting surface adapted to the baffle. The other side of the hook is provided with a horizontal pulling surface. The horizontal pulling surface and the first limiting surface are connected by a forward displacement surface. The upper ends of the horizontal pulling surface and the forward displacement surface extend out of the telescopic frame. The horizontal pulling mechanism of the present invention is integrated into a carrier vehicle, and no additional horizontal pulling station is required, which saves factory land and can reduce the floor space by more than 30%, avoiding the problem of factory waste.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a horizontal pulling mechanism, a lithium battery negative electrode material production line and a method. Background Art

[0002] Electric vehicles have been gradually adopted, and their batteries, serving as energy storage, primarily consist of positive electrode materials, negative electrode materials, separators, and electrolytes. Negative electrode material production typically utilizes a graphitization furnace, which needs to be moved horizontally across the production line to enable cross-process operations.

[0003] The existing patent announcement number CN216785732U discloses a continuous mobile graphitization system, and the existing patent publication number CN112815722A discloses a mobile graphitization furnace system and its power supply device, both of which use a transition car for the transverse movement device. The transition car is a carrier that can be moved laterally. The graphitization furnace and the longitudinal moving car line are transferred to the transverse moving carrier. Then, the graphitization furnace, the longitudinal moving car and the transverse moving car are moved from the first track to the second track together. In this transverse movement method, the transverse movement station cannot be used as a production station. Each production line requires a separate transverse movement station on both sides. The transverse movement station occupies more than 30% of the production area, which causes a great deal of waste in the factory. In addition, the longitudinal moving car needs to be moved to the transverse moving car. Therefore, the transverse moving car has a complex structure, which can easily lead to poor equipment stability and high operating costs. Summary of the Invention

[0004] The object of the present invention is to provide a horizontal pulling mechanism, a lithium battery negative electrode material production line and a method, which can reduce the floor space and simplify the equipment structure.

[0005] The technical solution of the present invention is: a horizontal pulling mechanism, comprising a first base and a telescopic member installed on the first base and capable of extending and retracting along the length direction X of the first base, a telescopic frame being connected to the power output end of the telescopic member, a hook being hinged in the telescopic frame, a side of the telescopic frame away from the telescopic member being a baffle, a first limiting surface adapted to the baffle being provided on one side of the hook, a horizontal pulling surface being provided on the other side of the hook, the horizontal pulling surface and the first limiting surface being connected via a forward moving surface, the upper ends of the horizontal pulling surface and the forward moving surface extending outward of the telescopic frame.

[0006] Preferably, the first limiting surface is an arc surface. When the first limiting surface abuts against the baffle, the horizontal pulling surface is a vertical plane, and the forward moving surface is an inclined surface.

[0007] Preferably, the hook is hinged to the telescopic frame via a shaft, a horizontal distance L1 is formed from the center of the shaft to the first limiting surface, and a horizontal distance L2 is formed from the center of the shaft to the transverse pulling surface, and L1>L2.

[0008] Preferably, a first guide plate and a second guide plate are spaced apart in the width direction Y of the first base, and the telescopic frame is slidably placed between the first guide plate and the second guide plate;

[0009] The telescopic frame is provided with movable wheels on both sides of the Y direction for rotation, and the movable wheels can roll on the first base.

[0010] Preferably, the first guide plate includes a first vertical plate vertically connected to the first base and a first horizontal plate horizontally connected to the top of the first vertical plate, and the first horizontal plate extends outward from the first vertical plate to place the movable wheel on one side;

[0011] The second guide plate includes a second vertical plate vertically connected to the first base and a second horizontal plate horizontally connected to the top of the second vertical plate. The second horizontal plate extends out of the second vertical plate to adapt to the movable wheel on the other side.

[0012] Preferably, the second vertical plate is shorter than the first vertical plate, and a second limiting surface is provided on the side of the second vertical plate away from the telescopic member. When the movable wheel retreats toward the telescopic member, the second limiting surface is used to limit the retreat position of the movable wheel.

[0013] The present invention also provides a lithium battery negative electrode material production line, comprising a foundation, a graphitization furnace, and a plurality of carriers moving along the Y direction on the foundation, wherein the plurality of carriers are arranged at intervals in the X direction of the foundation, at least one of the carriers is provided with at least one of the above-mentioned horizontal pulling mechanisms, a pulling plate adapted to the horizontal pulling mechanism is provided at the bottom of the graphitization furnace, and when the horizontal pulling mechanism is extended in the X direction, the hook is hooked with the pulling plate.

[0014] Preferably, a plurality of the pulling plates are arranged at intervals along the X direction at the bottom of the graphitization furnace.

[0015] Preferably, the carrier is further provided with a support roller extending in the X direction, and at least two support rollers are arranged at intervals on the carrier. The bottom of the graphitization furnace is provided with a track plate in contact with the support rollers.

[0016] The present invention also provides a method for horizontally moving a graphitization furnace, which is performed using the above-mentioned lithium battery negative electrode material production line and includes the following steps:

[0017] The graphitization furnace is displaced along the Y direction on the foundation by the first carrier; when the graphitization furnace needs to be moved horizontally, the second carrier is moved along the foundation until it is flush with the first carrier;

[0018] The horizontal pulling mechanism on the second carrier is activated, causing the telescopic frame and hook to extend in the X direction; the forward surface of the hook first contacts the pull plate, causing the hook to rotate;

[0019] The hook continues to extend, the forward moving surface separates from the pull plate, and the hook returns to a vertical state under the action of its own weight;

[0020] Stop extending the hook, start the horizontal pulling mechanism to pull back the telescopic frame and the pull plate. At this time, the horizontal pulling surface abuts against the pull plate, and the first limit surface abuts against the baffle. When the hook continues to retract, the graphitization furnace is moved horizontally from the first carrier to the second carrier, completing the horizontal movement of the graphitization furnace.

[0021] Compared with the related art, the present invention has the following beneficial effects:

[0022] 1. Design a horizontal pulling mechanism to pull the graphitization furnace from one carrier to another in a horizontal pulling manner. The horizontal pulling mechanism is integrated into the carrier, eliminating the need for additional horizontal pulling stations, saving plant land and reducing floor space by more than 30%, thus avoiding plant waste.

[0023] Second, a hook is eccentrically hinged on the horizontal pulling mechanism, so that the hook can easily enter the pulling plate of the graphitization furnace in the forward direction. When the hook retracts, the horizontal pulling surface of the hook abuts against the pulling plate, and the first limiting surface abuts against the baffle, so that the hook and the pulling plate are effectively locked when pulling back, and the graphitization furnace can be smoothly moved horizontally to the next carrier. The implementation method is simple, stable and reliable.

[0024] 3. The transport vehicle is integrated with a horizontal pulling mechanism, and the overall structure is compact and small, stable and reliable, with low operating costs and low investment costs, which can reduce investment costs by more than 70%. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic structural diagram of the horizontal pulling mechanism provided by the present invention;

[0026] Figure 2 A partial cross-sectional schematic diagram of the horizontal pulling mechanism provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the lithium battery negative electrode material production line provided by the present invention;

[0028] Figure 4 for Figure 3 The structural diagram without the graphitization furnace;

[0029] Figure 5 Schematic diagram of the structure of the graphitization furnace;

[0030] Figure 6 It is a structural diagram of the support roller;

[0031] Figure 7 A schematic diagram of the alignment of two carriers;

[0032] Figure 8This is a schematic diagram of the horizontal pulling mechanism pulling the first pulling plate of the graphitization furnace horizontally;

[0033] Figure 9 This is a schematic diagram of the horizontal pulling mechanism before it comes into contact with the second pulling plate of the graphitization furnace;

[0034] Figure 10 This is a schematic diagram of the cross-pull mechanism after it contacts the second pulling plate of the graphitization furnace;

[0035] Figure 11 This is a schematic diagram of the horizontal pulling mechanism pulling the second pulling plate of the graphitization furnace horizontally;

[0036] Figure 12 Schematic diagram of the graphitization furnace being moved horizontally to the second carrier.

[0037] In the accompanying drawings: 1. Graphitizing furnace; 11. Pull plate; 12. Track plate; 13. Furnace frame; 2. Carrier; 21. First carrier; 22. Second carrier; 3. Foundation; 4. Horizontal pulling mechanism; 41. First base; 42. Telescopic frame; 43. Shaft; 44. Hook; 441. First limiting surface; 442. Horizontal pulling surface; 443. Forward moving surface; 45. First guide plate; 451. First vertical plate; 452. First horizontal plate; 46. Second guide plate; 461. Second vertical plate; 462. Second horizontal plate; 463. Second limiting surface; 47. Movable wheel; 48. Telescopic member; 49. First support; 410. Baffle; 5. Support roller; 51. Roller; 52. Second support; 53. Second base; 6. Track. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0039] like Figure 1 、 Figure 2 As shown, the horizontal pulling mechanism 4 provided in this embodiment includes a first base 41 , a telescopic frame 42 , a shaft 43 , a hook 44 , a first guide plate 45 , a second guide plate 46 , a movable wheel 47 , a telescopic member 48 and a first support 49 .

[0040] The first base 41 has a rectangular flat plate structure with a length direction X and a width direction Y. The telescopic member 48 can optionally be a hydraulic cylinder, with its cylinder barrel mounted on the first base 41 via a first support 49. Its telescopic rod extends and retracts along the X direction. The telescopic frame 42 is fixedly connected to the telescopic rod of the telescopic member 48. The telescopic frame 42 is hollow and has through-holes at its upper and lower ends. The sidewall of the telescopic frame 42, away from the telescopic rod, forms a baffle 410.

[0041] One side of the hook 44 is provided with a first limiting surface 441 adapted to the baffle 410, and the other side of the hook 44 is provided with a horizontal pulling surface 442. The horizontal pulling surface 442 and the first limiting surface 441 are connected by a forward moving surface 443, and the upper ends of the horizontal pulling surface 442 and the forward moving surface 443 extend out of the outside of the telescopic frame 42.

[0042] The hook 44 is hinged to the telescopic frame 42 via a shaft 43. A horizontal distance L1 is formed between the center of the shaft 43 and the first limiting surface 441, and a horizontal distance L2 is formed between the center of the shaft 43 and the transverse pull surface 442. L1 is greater than L2, resulting in an eccentric arrangement of the shaft 43 on the hook 44. This eccentric hinge structure allows the hook 44 to remain vertical under the influence of gravity (without external forces). When the first limiting surface 441 contacts the baffle 410, the transverse pull surface 442 is a vertical plane, and the forward displacement surface 443 is an inclined surface.

[0043] The height of the baffle 410 is smaller than that of the telescopic frame 42 , and an inclined surface is provided on the side wall of the telescopic frame 42 for connecting the baffle 410 to achieve locking contact between the baffle 410 and the first limiting surface 441 .

[0044] The telescopic frame 42 is provided with movable wheels 47 for rotation on both sides of the Y direction. The telescopic frame 42 is moved by rolling the movable wheels 47 on the first base 41 .

[0045] A first guide plate 45 and a second guide plate 46 are spaced apart in the width direction Y of the first base 41, and the telescopic frame 42 is slidably positioned between the first guide plate 45 and the second guide plate 46. The first guide plate 45 includes a first vertical plate 451 vertically connected to the first base 41 and a first horizontal plate 452 horizontally connected to the top of the first vertical plate 451. The first horizontal plate 452 extends outward from the outside of the first vertical plate 451 to accommodate the movable wheel 47 on one side. The second guide plate 46 includes a second vertical plate 461 vertically connected to the first base 41 and a second horizontal plate 462 horizontally connected to the top of the second vertical plate 461. The second horizontal plate 462 extends outward from the second vertical plate 461 to adapt to the movable wheel 47 on the other side. In other words, the movable wheel 47 on one side rolls in the slide groove enclosed by the first vertical plate 451, the first horizontal plate 452, and the first base 41. The second upright plate 461 is shorter than the first upright plate 451. A second stop surface 463 is provided on the side of the second upright plate 461 facing away from the telescopic member 48. This second stop surface 463 defines the retracted position of the movable wheel 47 as it retracts toward the telescopic member 48. Specifically, when the movable wheel 47 contacts the second stop surface 463, the telescopic member 48 stops retracting. A position sensor can be installed near the second stop surface 463 to generate a signal to stop the telescopic member 48.

[0046] like Figure 3 As shown, the present invention also provides a lithium battery negative electrode material production line, comprising a base 3, a graphitization furnace 1, and multiple carriers 2 that move along the Y direction on the base 3 via rails 6. The multiple carriers 2 are arranged at intervals in the X direction of the base 3. At least one of the carriers 2 is provided with at least one of the above-mentioned horizontal pulling mechanisms. The bottom of the graphitization furnace 1 is provided with a pulling plate 11 that is compatible with the horizontal pulling mechanism. When the horizontal pulling mechanism is extended in the X direction, the hook 44 is hooked with the pulling plate 11.

[0047] like Figure 5 As shown, the graphitization furnace 1 includes a furnace frame 13, three track plates 12 arranged along the Y direction at the bottom of the furnace frame 13, and two sets of pull plates 11. Each set of pull plates 11 is arranged in multiple intervals along the X direction to facilitate the hook 44 to gradually move the graphitization furnace 1 horizontally in a step-by-step manner. The track plates 12 are adapted to the support rollers 5.

[0048] In this embodiment, in order to facilitate the description of the lateral movement, the carrier 2 is provided with two, namely a first carrier 21 and a second carrier 22, and two transverse pulling mechanisms 4 (such as Figure 4 shown).

[0049] Three groups of support rollers 5 are arranged at intervals along the Y direction on each of the transport vehicles 2. Figure 6As shown, the support roller 5 includes a second base 53 and a plurality of rollers 51 hinged to the second base 53 via second supports 52. The axis of the rollers 51 is parallel to the Y direction. The track plate 12 is in contact with the rollers 51. When the graphitization furnace 1 moves laterally, it rolls on the rollers 51, making the movement more labor-saving.

[0050] The present invention also provides a method for horizontally moving a graphitization furnace, which is performed using the above-mentioned lithium battery negative electrode material production line and includes the following steps:

[0051] Step S1, such as Figure 7 As shown, the graphitization furnace 1 is displaced along the Y direction on the base 3 via the track 6 on the first carrier 21 to perform the corresponding process. When the graphitization furnace 1 needs to be moved laterally, the second carrier 22 is moved along the base 3 to be flush with the first carrier 21.

[0052] Step S2, such as Figure 8 As shown, the horizontal pulling mechanism 4 on the second carrier 22 is activated, causing the telescopic frame 42 and hook 44 to extend in the X direction. The forward surface 443 of the hook 44 first contacts the first pull plate 11 (the pull plate 11 located at the edge), causing the hook 44 to rotate. The hook 44 continues to extend, and the forward surface 443 disengages the pull plate 11. The hook 44 returns to a vertical position under its own weight. The extension of the hook 44 is stopped, and the horizontal pulling mechanism 4 is activated to pull the telescopic frame 42 and pull plate 11 back. At this time, the horizontal pulling surface 442 contacts the pull plate 11, and the first limiting surface 441 contacts the baffle 410. As the hook 44 continues to retract, it moves the graphitization furnace 1 horizontally from the first carrier 21 to the edge of the second carrier 22.

[0053] Step S3, such as Figure 9 As shown, the horizontal pulling mechanism 4 is stopped from retreating, and the horizontal pulling mechanism 4 is restarted to advance (extend), so that the hook 44 is first rotated clockwise to the inner side of the second pull plate 11 (as shown in FIG. Figure 9 As shown), until the horizontal pull surface 442 is located on the inner side of the second pull plate 11, the hook 44 returns to the vertical position (as shown Figure 10 As shown), the horizontal pulling mechanism 4 is stopped from moving forward and restarted to move back. At this time, the horizontal pulling surface 442 abuts against the pulling plate 11, and the first limiting surface 441 abuts against the baffle 410. When the hook 44 continues to move back, the graphitization furnace 1 is moved horizontally for a short distance on the second carrier 22 (as shown). Figure 11 shown).

[0054] Repeat step S3, the hook 44 contacts the next pull plate 11 and pulls back until the graphitization furnace 1 is completely pulled back to the second carrier 22 (such as Figure 12 As shown), the horizontal movement of the graphitizing furnace 1 is completed.

[0055] If the number of the transport vehicles 2 exceeds two, the setting principle is the same as above. Between two adjacent transport vehicles 2, a transverse pulling mechanism 4 is set on one of the transport vehicles 2.

[0056] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A horizontal pulling mechanism, characterized in that: The invention comprises a first base (41) and a telescopic member (48) mounted on the first base (41) and capable of telescoping along the length direction X of the first base (41), a telescopic frame (42) is connected to the power output end of the telescopic member (48), a hook (44) is hinged in the telescopic frame (42), a side of the telescopic frame (42) away from the telescopic member (48) is a baffle (410), a first limiting surface (441) adapted to the baffle (410) is provided on one side of the hook (44), and a transverse pulling surface (442) is provided on the other side of the hook (44), and the transverse pulling surface (442) and the first limiting surface (441) are connected to each other. ) are connected by a forward moving surface (443), and the upper ends of the horizontal pulling surface (442) and the forward moving surface (443) extend out of the outside of the telescopic frame (42); the first limiting surface (441) is an arc surface, and when the first limiting surface (441) abuts against the baffle (410), the horizontal pulling surface (442) is a vertical plane, and the forward moving surface (443) is an inclined surface; the hook (44) is hinged to the telescopic frame (42) through the shaft (43), and a horizontal distance L1 is formed from the center of the shaft (43) to the first limiting surface (441), and a horizontal distance L2 is formed from the center of the shaft (43) to the horizontal pulling surface (442), and L1>L2.

2. The horizontal pulling mechanism according to claim 1, characterized in that: A first guide plate (45) and a second guide plate (46) are spaced apart in the width direction Y of the first base (41), and the telescopic frame (42) is slidably placed between the first guide plate (45) and the second guide plate (46); The telescopic frame (42) is provided with movable wheels (47) on both sides of the Y direction for rotation, and the movable wheels (47) can roll on the first base (41).

3. The horizontal pulling mechanism according to claim 2, characterized in that: The first guide plate (45) includes a first vertical plate (451) vertically connected to the first base (41) and a first horizontal plate (452) horizontally connected to the top of the first vertical plate (451), and the first horizontal plate (452) extends out of the outside of the first vertical plate (451) to place the movable wheel (47) on one side; The second guide plate (46) includes a second vertical plate (461) vertically connected to the first base (41) and a second horizontal plate (462) horizontally connected to the top of the second vertical plate (461), and the second horizontal plate (462) extends out of the outside of the second vertical plate (461) to adapt to the movable wheel (47) on the other side.

4. The horizontal pulling mechanism according to claim 3, characterized in that: The second vertical plate (461) is shorter than the first vertical plate (451), and a second limiting surface (463) is provided on a side of the second vertical plate (461) away from the telescopic member (48). When the movable wheel (47) moves back toward the telescopic member (48), the second limiting surface (463) is used to limit the retracted position of the movable wheel (47).

5. A lithium battery negative electrode material production line, comprising a base (3) and a graphitization furnace (1), characterized in that: The invention also includes a plurality of carriers (2) that move along the Y direction on the base (3), wherein the plurality of carriers (2) are arranged at intervals in the X direction of the base (3), and at least one of the carriers (2) is provided with at least one horizontal pulling mechanism (4) as described in any one of claims 1 to 4, and the bottom of the graphitization furnace (1) is provided with a pulling plate (11) adapted to the horizontal pulling mechanism (4), and when the horizontal pulling mechanism (4) is extended in the X direction, the hook (44) is hooked with the pulling plate (11).

6. The lithium battery negative electrode material production line according to claim 5, characterized in that: A plurality of pulling plates (11) are arranged at intervals along the X direction at the bottom of the graphitization furnace (1).

7. The lithium battery negative electrode material production line according to claim 5, characterized in that: The carrier vehicle (2) is further provided with a support roller (5) extending in the X direction, at least two support rollers (5) are arranged at intervals on the carrier vehicle (2), and a track plate (12) in contact with the support rollers (5) is provided at the bottom of the graphitization furnace (1).

8. A method for transversely moving a graphitization furnace, using the lithium battery negative electrode material production line according to any one of claims 5 to 7, characterized in that: The steps include: The graphitization furnace (1) is displaced along the Y direction on the base (3) by the first carrier (2); when the graphitization furnace (1) needs to be moved laterally, the second carrier (2) is moved along the base (3) until it is flush with the first carrier (2); The horizontal pulling mechanism (4) on the second carrier (2) is activated, so that the telescopic frame (42) and the hook (44) extend in the X direction; the forward moving surface (443) of the hook (44) first contacts the pulling plate (11), so that the hook (44) rotates; The hook (44) continues to extend, the forward moving surface (443) separates from the pull plate (11), and the hook (44) returns to a vertical state under the action of its own weight; Stop extending the hook (44), start the horizontal pulling mechanism (4) to pull back the telescopic frame (42) and the pulling plate (11), at this time, the horizontal pulling surface (442) abuts against the pulling plate (11), and the first limiting surface (441) abuts against the baffle (410), and when the hook (44) continues to retreat, the graphitization furnace (1) is moved horizontally from the first carrier (2) to the second carrier (2), completing the horizontal movement of the graphitization furnace (1).

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