Die cutting device for lithium metal negative plate

Abstract

The utility model relates to the technical field of battery processing, in particular to a die cutting device for a lithium metal negative plate, which comprises a plate body and further comprises a fixing plate, a notch is arranged at a first end of the fixing plate, two sliding rails are respectively arranged on the fixing plate at intervals oppositely, and a first sliding block and a second sliding block which are matched with the sliding rails are arranged on the two sliding rails. A cutter is arranged on the first sliding block, and a protruding part is arranged on the second sliding block. The first conveying table is arranged between the notches, and a second conveying table is arranged at the first end of the first conveying table; and the driving mechanism is used for driving the first sliding block and the second sliding block to be close to each other or away from each other. According to the sheet body cutting device, the sheet body is placed on the first conveying table, then the first conveying table conveys the sheet body to the position below the notch, and after one end of the sheet body is attached to the second conveying table, the driving mechanism is used for driving the first sliding block and the second sliding block to move so as to drive the cutter and the protruding part to be close to each other to cut the sheet body; and the cut sheet body is conveyed to a preset position by the second conveying table.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a die-cutting device for lithium metal negative electrode sheets. Background Art

[0002] Lithium metal anode is a key material in the next generation of high-performance battery technology. It uses lithium metal as the active substance. Compared with traditional graphite, lithium metal has an extremely high theoretical specific capacity (3860mAh / g), which means that it can store more energy at the same mass.

[0003] The existing patent with publication number CN220072961U discloses a die-cutting device for lithium metal negative electrode sheets, which is connected by sliding and fixing a cutter and an upper pressing plate. In this way, when the cutter needs to be replaced, the cutter can be slid out of the upper pressing plate to achieve the replacement of the cutter, thereby improving the convenience of replacing the cutter.

[0004] However, in the above technical solution, although the cutter can be used to cut lithium metal negative electrode sheets, when the user needs to cut a large number of lithium metal negative electrode sheets, the efficiency of this technical solution is limited. Therefore, the utility model aims to provide a die-cutting device that can batch cut a large number of lithium metal negative electrode sheets. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a die-cutting device for lithium metal negative electrode sheets, which can perform batch cutting on a large number of lithium metal negative electrode sheets to solve the problem of limited efficiency of batch cutting on a large number of lithium metal negative electrode sheets in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a die-cutting device for lithium metal negative electrode sheets, including a sheet body and a fixed plate, a first end of which is provided with a notch, and a slide rail is respectively provided on the fixed plate with the notch as the center and relatively spaced apart, and a first slider and a second slider matching the slide rails are provided on the two slide rails, a cutter is provided on one end of the first slider facing the second slider, and a protrusion is provided on one end of the second slider facing the first slider; a first conveying platform is provided between the notches, and a second conveying platform is provided at a relatively spaced apart first end of the first conveying platform; and a driving mechanism, which is used to drive the first slider and the second slider to move closer to or away from each other to increase or decrease the distance between the first slider and the second slider.

[0007] Optionally, the driving mechanism includes a motor, a first gear, a second gear, a first plate, and a second plate; the first gear and the second gear are relatively spaced and rotatably arranged on the fixed plate, the first gear and the second gear are meshed with each other, the first plate and the second plate are relatively spaced and rotatably arranged on the fixed plate, the first plate and the second plate are both provided with a first slide groove and a second slide groove, the first gear and the second gear are both provided with a first slide rod, the first slide rod can slide along the first slide groove, the first slider and the second slider are both provided with a second slide rod, the second slide rod can slide with the second slide groove, and the first gear is driven to rotate by the motor.

[0008] Optionally, the cutter is detachably connected to the first sliding block.

[0009] Optionally, the cutter is fixed to the first sliding block by at least one bolt.

[0010] Optionally, the blade of the cutter is in a convex shape.

[0011] Optionally, the surface of the protrusion is at least partially constructed of a flexible material.

[0012] Compared with the prior art, the utility model provides a die-cutting device for lithium metal negative electrode sheets, which has the following beneficial effects:

[0013] The utility model places a sheet on a first conveying platform, and then the first conveying platform conveys the sheet to the notch, waits for one end of the sheet to be attached to the second conveying platform, and then uses a driving mechanism to drive the first slider and the second slider to move, so as to drive the cutter and the protruding part to approach each other to cut the sheet, and then the cut sheet is conveyed to a predetermined position by the second conveying platform, and the cycle is repeated, so that the sheet can be cut continuously, thereby improving the user's efficiency in cutting the sheet;

[0014] The utility model provides a detachable connection between the cutter and the first slider. When the user needs to maintain or replace the cutter, the cutter and the first slider are disassembled, so that the user can maintain or replace the cutter conveniently.

[0015] The utility model provides a bolt, and when the user needs to maintain or replace the cutter, the user twists the bolt to separate it from the first sliding block, so that the user can maintain or replace the cutter conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of the utility model is shown;

[0017] Figure 2 A partial three-dimensional structural schematic diagram of the utility model is shown;

[0018] Figure 3 Shows Figure 2 Another axonometric three-dimensional structural diagram;

[0019] Figure 4 Shows another part of the utility model three-dimensional structural schematic diagram;

[0020] Figure 5 A three-dimensional structural schematic diagram of the first sliding block, the bolt and the cutter is shown.

[0021] In the figure: 1, sheet body; 2, fixing plate; 3, notch; 4, slide rail; 5, first slider; 6, second slider; 7, cutter; 8, protrusion; 9, first conveyor platform; 10, second conveyor platform; 11, driving mechanism; 12, motor; 13, first gear; 14, second gear; 15, first plate body; 16, second plate body; 17, first slide groove; 18, second slide groove; 19, first slide rod; 20, second slide rod; 21, bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example: See Figures 1 to 5 According to an embodiment of the utility model, a technical solution is provided: a die-cutting device for lithium metal negative electrode sheets, comprising a sheet body 1, and a fixed plate 2, a first end of which is provided with a notch 3, a slide rail 4 is respectively provided on the fixed plate 2 with the notch 3 as the center and relatively spaced, and a first slider 5 and a second slider 6 are respectively provided on the two slide rails 4 to match the slide rails 4, a cutter 7 is provided on the end of the first slider 5 facing the second slider 6, and a protrusion 8 is provided on the end of the second slider 6 facing the first slider 5; a first conveying platform 9 is provided between the notches 3, and a second conveying platform 10 is relatively spaced at the first end of the first conveying platform 9; and a driving mechanism 11, which is used to drive the first slider 5 and the second slider 6 to move simultaneously along the length direction of the slide rail 4 to increase or decrease the distance between the first slider 5 and the second slider 6.

[0024] With the die-cutting device for lithium metal negative electrode sheets of the above structure, when the user needs to cut the sheet 1, the sheet 1 is first placed on the first conveyor table 9, and then the first conveyor table 9 conveys the sheet 1 to the underside of the notch 3. After one end of the sheet 1 is attached to the second conveyor table 10, the driving mechanism 11 is used to drive the first slider 5 and the second slider 6 to move, so as to drive the cutter 7 and the protrusion 8 to approach each other to cut the sheet 1, and then the cut sheet 1 will be conveyed to a predetermined position by the second conveyor table 10, and the cycle is repeated to continuously cut the sheet 1, thereby improving the user's cutting efficiency of the sheet 1.

[0025] It should be noted that the first conveying platform 9 and the second conveying platform 10 are both prior art, and their function is to convey the sheet 1 from a first end of the first conveying platform 9 or the second conveying platform 10 to a second end of the first conveying platform 9 or the second conveying platform 10 .

[0026] In this embodiment, the driving mechanism 11 includes a motor 12, a first gear 13, a second gear 14, a first plate 15, and a second plate 16; the first gear 13 and the second gear 14 are relatively spaced and rotatably arranged on the fixed plate 2, the first gear 13 and the second gear 14 are meshed, the first plate 15 and the second plate 16 are relatively spaced and rotatably arranged on the fixed plate 2, the first plate 15 and the second plate 16 are both provided with a first slide groove 17 and a second slide groove 18, the first gear 13 and the second gear 14 are both provided with a first slide bar 19, the first slide bar 19 can slide along the first slide groove 17, the first slider 5 and the second slider 6 are both provided with a second slide bar 20, the second slide bar 20 and the second slide groove 18 can slide, and the first gear 13 is driven to rotate by the motor 12; when it is necessary to drive the first slider 5 and the second slider 6 to simultaneously move along the length direction of the slide rail 4 When moving in the opposite direction, the motor 12 is used to drive the first gear 13 to rotate, and the first gear 13 will drive the second gear 14 to reverse relative to the first gear 13. At this time, the first sliding bar 19 on the first gear 13 and the second gear 14 will rotate along the circumferential direction of the first gear 13 and the second gear 14. The first sliding bar 19 will move along the length direction of the first sliding groove 17 when rotating to drive the first plate body 15 and the second plate body 16 to rotate, and the rotation of the first plate body 15 and the second plate body 16 will also drive the second sliding bar 20 to move. Since the first sliding block 5 and the second sliding block 6 are restricted from moving left and right by the slide rail 4, the rotation of the first plate body 15 and the second plate body 16 will drive the sliding blocks to move along the length direction of the slide rail 4. Since the first plate body 15 and the second plate body 16 rotate in opposite directions, this will cause the first sliding block 5 and the second sliding block 6 to move relatively close to or away from each other.

[0027] In this embodiment, the cutter 7 and the first slider 5 are detachably connected; when the user needs to maintain or replace the cutter 7, the cutter 7 and the first slider 5 are disassembled to facilitate the user to maintain or replace the cutter 7.

[0028] In this embodiment, the cutter 7 is fixed to the first slider 5 by at least one bolt 21; when the user needs to maintain or replace the cutter 7, the bolt 21 is twisted to disengage it from the first slider 5, so as to facilitate the user to maintain or replace the cutter 7.

[0029] In this embodiment, the blade of the cutter 7 is in a convex shape; when the cutter 7 is cutting the sheet 1, the convex shape of the blade can make the blade more rigid, reduce vibration and deformation during the cutting process, and thus improve cutting accuracy and surface quality.

[0030] In this embodiment, at least part of the surface of the protrusion 8 is constructed of flexible material; when the protrusion 8 lifts the sheet 1, the protrusion 8 with at least part of the flexible surface structure will reduce the damage of the protrusion 8 to the sheet 1 to prevent the sheet 1 from being damaged.

[0031] Working principle: when the user needs to cut the sheet 1, the user first places the sheet 1 on the first conveying platform 9, and then the first conveying platform 9 will convey the sheet 1 to the notch 3, and wait for one end of the sheet 1 to be attached to the second conveying platform 10, and then use the motor 12 to drive the first gear 13 to rotate, and the first gear 13 will drive the second gear 14 to reverse relative to the first gear 13. At this time, the first slide bar 19 on the first gear 13 and the second gear 14 will rotate along the circumferential direction of the first gear 13 and the second gear 14. When rotating, the first slide bar 19 will move along the length direction of the first slide groove 17 to drive the first plate body 15 and the second plate body 16 to rotate, and the rotation of the first plate body 15 and the second plate body 16 will also drive the second slide bar 20 to move. Since the first slider 5 and the second slider 6 are restricted from moving left and right by the slide rail 4, the rotation of the first plate body 15 and the second plate body 16 will drive the slider to move along the length direction of the slide rail 4. Since the first plate body 15 and the second plate body 16 rotate in opposite directions, this The first slider 5 and the second slider 6 are moved relatively close to or away from each other, so as to drive the cutter 7 and the protruding portion 8 to approach each other to cut the sheet 1, and then the cut sheet 1 is conveyed to a predetermined position by the second conveying platform 10, so that the sheet 1 can be cut continuously in a reciprocating manner, thereby improving the cutting efficiency of the sheet 1 by the user; when the user needs to maintain or replace the cutter 7, the cutter 7 and the first slider 5 are disassembled to facilitate the user to maintain or replace the cutter 7; when the user needs to maintain or replace the cutter 7, the bolt 21 is twisted to disengage it from the first slider 5 to facilitate the user to maintain or replace the cutter 7; when the cutter 7 is cutting the sheet 1, the convex-shaped structure of the blade can make the blade more rigid, reduce vibration and deformation during the cutting process, thereby improving the cutting accuracy and surface quality; when the protruding portion 8 lifts the sheet 1, the protruding portion 8 with a surface at least partially having a flexible structure can reduce the damage of the protruding portion 8 to the sheet 1, so as to prevent the sheet 1 from being damaged.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-cutting device for lithium metal negative electrode sheets, comprising a sheet body (1), characterized in that: Also includes: A fixing plate (2) is provided with a notch (3) at its first end, and a slide rail (4) is provided on the fixing plate (2) with the notch (3) as the center and relatively spaced apart, and a first slider (5) and a second slider (6) are provided on each of the two slide rails (4) to match the slide rails (4), a cutter (7) is provided on one end of the first slider (5) facing the second slider (6), and a protrusion (8) is provided on one end of the second slider (6) facing the first slider (5); A first conveying platform (9) is arranged between the notches (3), and a second conveying platform (10) is arranged at a relative interval to a first end of the first conveying platform (9); and a driving mechanism (11) for driving the first slider (5) and the second slider (6) to move closer to or farther from each other, so as to increase or decrease the distance between the first slider (5) and the second slider (6).

2. A die-cutting device for lithium metal negative electrode sheets according to claim 1, characterized in that: The driving mechanism (11) comprises a motor (12), a first gear (13), a second gear (14), a first plate (15), and a second plate (16); the first gear (13) and the second gear (14) are relatively spaced and rotatably arranged on the fixed plate (2); the first gear (13) and the second gear (14) are meshed with each other; the first plate (15) and the second plate (16) are relatively spaced and rotatably arranged on the fixed plate (2); the first plate (15) ) and the second plate (16) are both provided with a first slide groove (17) and a second slide groove (18), the first gear (13) and the second gear (14) are both provided with a first slide bar (19), the first slide bar (19) can slide along the first slide groove (17), the first slider (5) and the second slider (6) are both provided with a second slide bar (20), the second slide bar (20) can slide with the second slide groove (18), and the first gear (13) is driven to rotate by the motor (12).

3. The die-cutting device for lithium metal negative electrode sheets according to claim 1, characterized in that: The cutting knife (7) and the first sliding block (5) are detachably connected.

4. A die-cutting device for lithium metal negative electrode sheets according to claim 3, characterized in that: The cutter (7) is fixed to the first slide block (5) via at least one bolt (21).

5. The die-cutting device for lithium metal negative electrode sheets according to claim 1, characterized in that: The blade of the cutter (7) is in a convex shape.

6. The die-cutting device for lithium metal negative electrode sheets according to claim 1, characterized in that: The surface of the protrusion (8) is at least partially constructed of a flexible material.

Images