Slitting pole piece pressing and flattening device

Abstract

The utility model discloses a slitting pole piece compressing and flattening device which comprises a compressing and flattening supporting rod arranged on a winding frame, a winding roller used for winding a slit pole piece is arranged on the winding frame in a rotating mode, and a limiting supporting plate is arranged on the compressing and flattening supporting rod through a dismounting and mounting mechanism. The limiting supporting plate can rotate relative to the pressing and flattening supporting rod, the end, away from the pressing and flattening supporting rod, of the limiting supporting plate is provided with a pressing assembly used for extruding the edge of the pole piece wound around the winding roller through a connecting rod, and a balancing weight is arranged on the connecting rod. According to the utility model, the pressing assembly is used for accurately extruding the cut surface of the cut pole piece, so that the cut surface of the pole piece is effectively flattened, the fluffy phenomenon is avoided, meanwhile, the edge strength of the pole piece is enhanced, the risks of cracking and fracture of the pole piece are reduced, and the quality of the pole piece is obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electrode piece production technical field especially relates to a slitting electrode piece compression flattening device. BACKGROUND

[0002] At present, after completing the rolling process of the positive and negative electrode pieces, the accurate slitting treatment needs to be implemented on the positive and negative electrode pieces according to the established electrode piece specification requirements. This process covers from the unwinding mechanism, through the deviation correction, tension control, roller guiding, slitting cutter cutting, dust adsorption, to the final tight winding on the winding shaft by the winding mechanism.

[0003] However, after the slitting operation is completed, the slitting surface of the electrode piece often faces the problems of damage and fluffing. If effective flattening treatment is not implemented in time, with the increase of the stacking layers of the electrode piece, the electrode piece edge burst phenomenon occurs frequently, which further causes the electrode piece cracking and even breaking, which poses a serious challenge to the quality of the electrode piece, and also lays hidden dangers for the subsequent battery assembly, including but not limited to the increased risk of internal short circuit of the battery, the gradual decrease of the battery capacity, and the significant reduction of the cycle service life. In view of the seriousness of the problem, a series of optimization measures need to be implemented to improve the electrode piece processing process after slitting, ensure the smoothness of the slitting surface and the sufficient structural strength, and thus guarantee the reliability and performance of the electrode piece and the final battery product.

[0004] Therefore, a slitting electrode piece compression flattening device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a slitting electrode piece compression flattening device to solve the technical problems of uneven slitting surface after slitting of the existing electrode piece and easy burst of the electrode piece edge.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A slitting electrode piece compression flattening device comprises a compression flattening support rod arranged on a winding frame, a winding roller for winding the slitted electrode piece is rotatably arranged on the winding frame, a limiting support plate is arranged on the compression flattening support rod through a detachable mechanism, the limiting support plate can rotate relative to the compression flattening support rod, a compression assembly for extruding the edge of the electrode piece wound on the winding roller is arranged on one end of the limiting support plate away from the compression flattening support rod through a connecting rod, and a counterweight is arranged on the connecting rod.

[0008] As a further scheme of the utility model, the dismounting mechanism comprises a rotary limiting sleeve and a fixing ring, the rotary limiting sleeve is slidably sleeved on the compression flattening support rod, one end of the limiting support plate is rotatably sleeved on the rotary limiting sleeve, the fixing ring is fixedly sleeved on one end of the rotary limiting sleeve, the limiting support plate is limited on the rotary limiting sleeve by the fixing ring, a limiting groove is formed on the compression flattening support rod, a second handle bolt is threadedly connected on the rotary limiting sleeve, the bottom of the second handle bolt is abutted in the limiting groove by screwing the second handle bolt, and the rotary limiting sleeve is fixed on the compression flattening support rod.

[0009] As a further scheme of the utility model, the lower end of the counterweight is provided with a slot, the counterweight is slidably sleeved on the connecting rod through the slot, and a first handle bolt for fixing the counterweight on the connecting rod is threadedly rotatably arranged on the counterweight.

[0010] As a further scheme of the utility model, the compression assembly comprises a support frame, the top of the support frame is rotatably connected with the connecting rod away from one end of the compression flattening support rod through a bearing with a seat, and a compression roller is rotatably connected to the inner side of the lower end of the compression assembly.

[0011] As a further scheme of the utility model, the surface of the compression roller is sprayed with a non-stick coating.

[0012] As a further scheme of the utility model, the outer wall of the rotary limiting sleeve is formed with a limiting protrusion, a limiting block is fixedly connected to the side of the limiting support plate away from the fixing ring, the limiting block can be pressed on the limiting protrusion, thereby limiting the descending position of the limiting support plate, and a driving member for driving the compression flattening support rod to rotate is arranged on the winding frame, so as to adjust the descending position of the limiting support plate.

[0013] As a further scheme of the utility model, the driving member comprises a servo motor, the rotating shaft of the servo motor is fixedly connected with one end of the compression flattening support rod, and the servo motor is fixedly arranged on one side of the winding frame.

[0014] Compared with the prior art, the cutting piece compression flattening device provided by the utility model has the following beneficial effects:

[0015] The utility model accurately extrudes the cutting surface of the cut piece through the compression assembly, effectively flattens the cutting surface of the piece, avoids the fluffy phenomenon, enhances the edge strength of the piece, reduces the risk of cracking and breaking of the piece, and significantly improves the quality of the piece.

[0016] By setting the position-adjustable counterweight, the pressure of the compression roller on the piece can be adjusted, the piece is prevented from being damaged due to excessive compression force under the premise of ensuring the flatness of the piece.

[0017] The down position of the pressing assembly can be adjusted by the cooperation of the limiting block and the limiting protrusion with the driving member, when the pole piece is wound, the driving member drives the pressing and flattening support rod to rotate, and then the limiting protrusion is abutted against the bottom of the limiting block, so that the phenomenon of sudden downward rotation of the pressing assembly after the wound pole piece is taken off is avoided, when the new pole piece is wound on the winding roller, the driving member is controlled to drive the pressing and flattening support rod to rotate reversely, and then the pressing and flattening support rod drives the limiting protrusion to reset, so that the pressing assembly is pressed on the pole piece again and the pressing operation is continued. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0019] Figure 1 It is a structure schematic view of the slitting pole piece pressing and flattening device of the embodiment of the present application.

[0020] Figure 2 It is a structure schematic view of the slitting pole piece pressing and flattening device of the embodiment of the present application. Figure 1 It is an enlarged structure schematic view of A part in the slitting pole piece pressing and flattening device of the embodiment of the present application.

[0021] Figure 3 It is an exploded structure schematic view of the dismounting mechanism in the embodiment of the present application.

[0022] Figure 4 It is an exploded schematic view of the connecting rod and the pressing assembly in the embodiment of the present application.

[0023] Figure 5 It is a structure schematic view of the counterweight in the embodiment of the present application.

[0024] Figure 6 It is a top view structure schematic view when the driving member in the present application adopts a servo motor.

[0025] Figure 7 It is a right view structure schematic view when the driving member in the present application adopts a cylinder.

[0026] REFERENCE SIGNS:

[0027] 1, winding frame; 101, winding roller; 102, pole piece; 2, pressing assembly; 201, support frame; 202, bearing with seat; 203, pressing roller; 3, pressing and flattening support rod; 301, limiting groove; 4, limiting support plate; 401, limiting block; 5, connecting rod; 6, counterweight; 601, insertion slot; 602, first handle bolt; 7, dismounting mechanism; 701, rotary limiting sleeve; 7011, limiting protrusion; 702, fixing ring; 703, second handle bolt; 8, servo motor; 9, air cylinder; 10, rack; 11, gear. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application are further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0029] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the present application and simplify the description, and therefore should not be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the embodiments of the present application.

[0030] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, integrally connected, or detachably connected, it can be the communication inside two elements, it can be directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present application according to the specific circumstances.

[0031] Referring to Figures 1 to 7 The utility model embodiment a kind of slitting pole piece pressing and flattening device, including being arranged on the pressing and flattening support rod 3 of winding frame 1, winding frame 1 is rotationally arranged with the winding roller 101 for winding after slitting pole piece 102 is pressed and flattened support rod 3 is arranged with limiting support plate 4 by dismounting mechanism 7 on it, limiting support plate 4 can be rotated relative to pressing and flattening support rod 3, one end of limiting support plate 4 away from pressing and flattening support rod 3 is equipped with the pressing assembly 2 for the edge of pole piece 102 wound on winding roller 101 is extruded by connecting rod 5, counterweight 6 is provided on connecting rod 5.

[0032] Referring to Figure 2 , 3As shown, the dismounting mechanism 7 comprises a rotation limiting sleeve 701 and a fixed ring 702, the rotation limiting sleeve 701 is sleeved on the pressing and flattening support rod 3, one end of the limiting support plate 4 is rotatably sleeved on the rotation limiting sleeve 701, the fixed ring 702 is fixedly sleeved on one end of the rotation limiting sleeve 701, the limiting support plate 4 is limited on the rotation limiting sleeve 701 by the fixed ring 702, a limiting groove 301 is formed on the pressing and flattening support rod 3, the second handle bolt 703 is threadedly connected to the rotation limiting sleeve 701, by screwing the second handle bolt 703, the bottom of the second handle bolt 703 is abutted in the limiting groove 301, and then the rotation limiting sleeve 701 is fixed on the pressing and flattening support rod 3.

[0033] The pressing assembly 2 comprises a support frame 201, the top of the support frame 201 is rotatably connected to the end of the connecting rod 5 away from the pressing and flattening support rod 3 through a bearing with seat 202, and the lower end of the pressing assembly 2 is rotatably connected to a pressing roller 203.

[0034] By adopting the above technical scheme, after the slit polar piece 102 is wound on the winding roller 101, the pressing roller 203 is pressed on the polar piece 102, so that the pressing roller 203 flattens the section surface of the polar piece 102 under the weight of the self weight and the counterweight 6.

[0035] In this embodiment, the pressing roller 203 is a solid metal roller.

[0036] In order to reduce the friction between the pressing roller 203 and the polar piece 102, the surface of the pressing roller 203 is sprayed with a non-stick coating, wherein the non-stick coating comprises one of a Teflon coating and a ceramic coating.

[0037] Referring to Figure 5 As shown, in order to facilitate the adjustment of the position of the counterweight 6, and then adjust the pressure applied by the pressing roller 203 to the polar piece 102, a slot 601 is formed in the lower end of the counterweight 6, the counterweight 6 is sleeved on the connecting rod 5 through the slot 601, and a first handle bolt 602 for fixing the counterweight 6 on the connecting rod 5 is threadedly rotatably arranged on the counterweight 6.

[0038] The outer wall of the rotation limiting sleeve 701 is formed with a limiting protrusion 7011, the limiting block 401 is fixedly connected to the side of the limiting support plate 4 away from the fixed ring 702, the limiting block 401 can be pressed on the limiting protrusion 7011, and then the downward position of the limiting support plate 4 is limited, and the winding frame 1 is provided with a driving member for driving the pressing and flattening support rod 3 to rotate, so as to adjust the downward position of the limiting support plate 4.

[0039] The driving member can adjust the down position of the pressing assembly 2 through the cooperation of the limiting block 401 and the limiting protrusion 7011, when the pole piece 102 is wound, the driving member drives the pressing and flattening support rod 3 to rotate, and then the limiting protrusion 7011 abuts against the bottom of the limiting block 401, so that the phenomenon of sudden down rotation of the pressing assembly 2 after the wound pole piece 102 is taken off is avoided, when the new pole piece 102 is wound on the winding roller 101, the driving member is controlled to drive the pressing and flattening support rod 3 to rotate reversely, and then the pressing and flattening support rod 3 drives the limiting protrusion 7011 to reset, so that the pressing assembly 2 is pressed on the pole piece 102 again, and the pressing operation is continued.

[0040] Referring to Figure 6 As shown, the driving member includes a servo motor 8, the rotating shaft of the servo motor 8 is fixedly connected with one end of the pressing and flattening support rod 3, the servo motor 8 is fixedly arranged on one side of the winding frame 1, and the servo motor 8 can drive the pressing and flattening support rod 3 to rotate forward or reversely by controlling the rotating shaft of the servo motor 8 to rotate forward or reversely.

[0041] Referring to Figure 7 As shown, the driving member includes a cylinder 9, a rack 10 and a gear 11, the cylinder 9 is fixedly arranged on one side of the winding frame 1, the gear 11 is fixedly sleeved on one end of the pressing and flattening support rod 3, the rack 10 is fixedly connected with the piston rod of the cylinder 9, the rack 10 is engaged with the gear 11, and the pressing and flattening support rod 3 can rotate forward or reversely by controlling the piston rod of the cylinder 9 to retract or extend.

[0042] The basic principle of the application is shown and described above, the above is only the preferred embodiment of the application, and does not limit the application, the above embodiment and the description in the specification only illustrate the principle of the application, any modification, equivalent replacement and improvement within the scope of the application without departing from the scope of the application should be included in the protection scope of the application.

Claims

1. A device for pressing and flattening split electrodes, characterized by: The utility model provides a winding frame (1) is provided with the pressing and smoothing support rod (3) on it, the winding roller (101) for winding the polar piece (102) after slitting is rotatably arranged on the winding frame (1), the pressing and smoothing support rod (3) is provided with the limit support plate (4) through the dismounting mechanism (7), the limit support plate (4) rotates relative to the pressing and smoothing support rod (3), one end of the limit support plate (4) away from the pressing and smoothing support rod (3) is provided with the pressing assembly (2) for extruding the edge of the polar piece (102) wound on the winding roller (101) through the connecting rod (5), the connecting rod (5) is provided with the counterweight (6).

2. The slitting and cutting electrode tab compact flattening device of claim 1, wherein: The dismounting mechanism (7) comprises a rotation limiting sleeve (701) and a fixed ring (702), the rotation limiting sleeve (701) is slidably sleeved on the pressing and smoothing support rod (3), one end of the limit support plate (4) is rotatably sleeved on the rotation limiting sleeve (701), the fixed ring (702) is fixedly sleeved on one end of the rotation limiting sleeve (701) through a bolt, the limit support plate (4) is limited on the rotation limiting sleeve (701) by the fixed ring (702), a limiting groove (301) is formed on the pressing and smoothing support rod (3), a second handle bolt (703) is threadedly rotatably connected to the rotation limiting sleeve (701), when the second handle bolt (703) is screwed, the bottom of the second handle bolt (703) abuts against in the limiting groove (301), so that the rotation limiting sleeve (701) is fixed on the pressing and smoothing support rod (3).

3. The slitting and cutting electrode tab compact flattening device of claim 2, wherein: A insertion slot (601) is formed in the lower end of the counterweight (6), the counterweight (6) is slidably sleeved on the connecting rod (5) through the insertion slot (601), and a first handle bolt (602) is threadedly rotatably arranged on the counterweight (6) and used for fixing the counterweight (6) on the connecting rod (5).

4. The slitting and tipping device according to claim 3, characterized in that: The pressing assembly (2) comprises a support frame (201), the top of the support frame (201) is rotatably connected to the end of the connecting rod (5) away from the pressing and smoothing support rod (3) through a bearing with a seat (202), and the lower end of the pressing assembly (2) is rotatably connected to the inner side of the connecting rod (5).

5. The slitting and cutting electrode tab compact flattening device of claim 4, wherein: The surface of the pressing roller (203) is sprayed with a non-stick coating.

6. The slitting and cutting electrode tab compact flattening device of claim 5, wherein: A limiting protrusion (7011) is formed on the outer wall of the rotation limiting sleeve (701), a limiting block (401) is fixedly connected to the side of the limit support plate (4) away from the fixed ring (702), the limiting block (401) can press on the limiting protrusion (7011), so that the descending position of the limit support plate (4) is limited, and a driving piece for driving the pressing and smoothing support rod (3) to rotate is arranged on the winding frame (1), and the descending position of the limit support plate (4) is adjusted.

7. The slitting and tipping device according to claim 6, characterized in that: The driving piece comprises a servo motor (8), the rotating shaft of the servo motor (8) is fixedly connected to one end of the pressing and smoothing support rod (3), and the servo motor (8) is fixedly arranged on one side of the winding frame (1).

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