Pole piece cutting and stacking device

Abstract

The utility model discloses a pole piece cutting and stacking device, and belongs to the technical field of battery production. The pole piece cutting and stacking device comprises a first unwinding mechanism, a first cutting mechanism and a conveying mechanism, the first unwinding mechanism is used for unwinding a pole piece roll material; the first cutting mechanism is arranged at the downstream of the first unwinding mechanism and is used for cutting a pole piece roll material unwound by the first unwinding mechanism to form a pole piece; the conveying mechanism comprises a first conveying part and a second conveying part, the second conveying part is arranged above the first conveying part in the Z-axis direction, the conveying direction of the first conveying part is opposite to the conveying direction of the second conveying part, and the first conveying part is used for adsorbing and conveying the pole piece to the position between the first conveying part and the second conveying part; and the second conveying piece is used for flattening, adsorbing and conveying the pole pieces on the first conveying piece. According to the pole piece cutting and stacking device, the pole pieces are flattened through the mutual abutting effect of the first conveying piece and the second conveying piece, the follow-up conveying stability of the second conveying piece to the pole pieces is guaranteed, and the quality of the formed composite pole pieces can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field especially relates to a pole piece cutting and folding device. BACKGROUND

[0002] In the cutting and folding process of lithium battery production, specifically, the pole piece roll material is cut into a plurality of pole pieces, and then the pole pieces are conveyed to the separator roll to be bonded to form a composite pole piece, and finally each composite pole piece is sequentially stacked into a group.

[0003] In the process of cutting the pole piece roll material into pole pieces, due to the influence of cutting, the middle part of the pole piece is easily curved and arched upward, thereby affecting the subsequent conveying stability of the pole piece and the effect of roll bonding between the pole piece and the separator, so as to ensure the quality of the formed composite pole piece.

[0004] In view of the above problems, an electrode sheet cutting and folding device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an electrode sheet cutting and folding device, which can eliminate the upward bending and arching of the middle part of the electrode sheet to ensure the conveying stability of the electrode sheet and the quality of the composite electrode sheet formed by subsequent rolling.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The electrode sheet cutting and folding device comprises:

[0008] The first unwinding mechanism is used for unwinding the pole piece roll material.

[0009] The first cutting mechanism is arranged downstream of the first unwinding mechanism, and the first cutting mechanism is used for cutting the pole piece roll material unwound by the first unwinding mechanism to form a pole piece.

[0010] The conveying mechanism comprises a first conveying member and a second conveying member, and along the Z-axis direction, the second conveying member is arranged above the first conveying member, and the conveying direction of the first conveying member is opposite to the conveying direction of the second conveying member, the first conveying member is used for adsorbing and conveying the pole piece to the space between the first conveying member and the second conveying member, and the second conveying member is used for flattening and adsorbing the pole piece on the first conveying member.

[0011] As an optional solution, the second conveying member and the first conveying member have the same structure, and the first conveying member comprises:

[0012] The conveying belt, the driving wheel and the driven wheel, the opposite ends of the conveying belt are respectively sleeved on the driving wheel and the driven wheel, the driving wheel drives the conveying belt and the driven wheel to move, and the conveying direction of the conveying belt of the first conveying member is opposite to the conveying direction of the conveying belt of the second conveying member;

[0013] The lower end of the conveying belt of the first conveying member can adsorb and convey the pole piece to convey the pole piece to the upper end of the conveying belt of the first conveying member, and the lower end of the conveying belt of the second conveying member is flat and adsorbs and conveys the pole piece on the upper end of the conveying belt of the first conveying member.

[0014] As an option, the conveying belt is provided with a plurality of negative pressure nozzles, and the plurality of negative pressure nozzles are distributed along the annular belt length of the conveying belt, and the negative pressure nozzles are used for vacuum adsorbing the pole piece.

[0015] As an option, in the Z-axis direction, the projection of at least part of the conveying belt of the second conveying member coincides with the projection of the conveying belt of the first conveying member.

[0016] As an option, the pole piece cutting and stacking device further comprises:

[0017] The second unwinding mechanism is used for unwinding the diaphragm roll material, and the second unwinding mechanism is located on one side of the conveying mechanism.

[0018] The second cutting mechanism is arranged downstream of the second unwinding mechanism, and the second cutting mechanism is used for cutting the diaphragm roll material unwound by the second unwinding mechanism to form diaphragm pieces.

[0019] The rolling mechanism is arranged downstream of the conveying mechanism and the second cutting mechanism, and the rolling mechanism is used for rolling and bonding the diaphragm pieces and the pole pieces to form composite pole pieces.

[0020] As an option, the rolling mechanism comprises:

[0021] The first pressure roller is fixedly arranged;

[0022] The second pressure roller is oppositely arranged on one side of the first pressure roller, and the second pressure roller can approach or move away from the first pressure roller, and the pole pieces and the diaphragm pieces are rolled and bonded between the first pressure roller and the second pressure roller.

[0023] As an option, the pole piece cutting and stacking device further comprises:

[0024] The transfer mechanism is arranged between the conveying mechanism and the rolling mechanism, and the transfer mechanism is used for transferring the pole pieces on the second conveying member into the rolling mechanism.

[0025] As an option, the opposite sides of the rolling mechanism are respectively provided with the first unwinding mechanism, the first cutting mechanism, the conveying mechanism and the transferring mechanism.

[0026] As an option, the pole piece cutting and stacking device further comprises a stacking mechanism for sequentially stacking each of the composite pole pieces; the stacking mechanism comprises:

[0027] A manipulator is arranged on one side of the rolling mechanism;

[0028] A stacking platform is arranged below the rolling mechanism, and the manipulator is used for grabbing the composite pole pieces formed by the compression roller of the rolling mechanism and sequentially stacking them on the stacking platform.

[0029] As an option, the pole piece cutting and stacking device further comprises:

[0030] An identification member is arranged between the first cutting mechanism and the conveying mechanism, and the identification member is used for detecting the coating amount and appearance of the pole piece.

[0031] The pole piece cutting and stacking device has the following advantages:

[0032] The first unwinding mechanism unwinds the pole piece roll material, the first cutting mechanism cuts the pole piece roll material unwound by the first unwinding mechanism to form a pole piece, that is, the first cutting mechanism can cut the wound pole piece roll material to form a plurality of pole pieces; the conveying mechanism comprises a first conveying member and a second conveying member, the second conveying member is arranged above the first conveying member in the Z-axis direction, and the conveying direction of the first conveying member is opposite to the conveying direction of the second conveying member, so that the first conveying member can adsorb and convey the pole piece to the space between the first conveying member and the second conveying member, thereby enabling the second conveying member to flatten and adsorb the pole piece conveyed by the first conveying member, that is, the pole piece can be flattened by the mutual pressing action between the first conveying member and the second conveying member, so as to eliminate the upward bending and arching of the middle part of the pole piece, thereby ensuring the conveying stability of the pole piece by the second conveying member and the effect of roll pressing and bonding between the pole piece and the diaphragm piece, and thus ensuring the quality of the formed composite pole piece. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic view of a pole piece cutting and stacking device provided in the utility model;

[0034] Figure 2 is a conveying structural schematic view of a pole piece on a first conveying member;

[0035] Figure 3 is a conveying structural schematic view of a pole piece on a first conveying member and a second conveying member.

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 10-pole piece roll material; 101-pole piece; 20-diaphragm roll material; 201-diaphragm piece;

[0038] 1-first unwinding mechanism; 2-first cutting mechanism;

[0039] 3-conveying mechanism; 31-first conveying member; 311-conveying belt; 312-driving wheel; 313-following wheel; 32-second conveying member;

[0040] 4-second unwinding mechanism; 5-second cutting mechanism; 6-rolling mechanism; 61-first roller; 62-second roller;

[0041] 7-transferring mechanism; 8-stacking mechanism; 9-identifying member; 11-belt conveying member; 12-conveying roller. DETAILED DESCRIPTION

[0042] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0043] Any of the features disclosed in this specification, unless explicitly stated otherwise, can be replaced by alternative features serving the same, or a similar, purpose.

[0044] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below by combining with the drawings and through specific implementation manners.

[0045] In the cutting and stacking process of lithium battery production, in the process of cutting the pole piece roll material into pole pieces, due to the influence of cutting, the middle part of the pole piece is easy to bend and arch upward, thereby affecting the subsequent conveying stability of the pole piece and affecting the effect of rolling and bonding between the pole piece and the diaphragm piece, so that the quality of the composite pole piece formed by the pole piece and the diaphragm piece cannot be guaranteed.

[0046] Therefore, the pole piece cutting and stacking device is proposed in the embodiment, which can cut the pole piece roll material into pole pieces, roll and bond the pole piece and the diaphragm piece to form a composite pole piece, and then stack each composite pole piece in turn. Specifically, the pole piece can be a positive pole piece or a negative pole piece in the battery, which is not limited here.

[0047] Specifically, as shown in FIG. 1, the pole piece cutting and stacking device comprises a first unwinding mechanism 1, a first cutting mechanism 2, a conveying mechanism 3, a second unwinding mechanism 4, a second cutting mechanism 5, a rolling mechanism 6, a transferring mechanism 7, a stacking mechanism 8 and an identifying member 9. Figures 1 to 3As shown, the pole piece cutting and stacking device comprises a first unwinding mechanism 1, a first cutting mechanism 2, and a conveying mechanism 3; wherein the pole piece roll material 10 is wound on the first unwinding mechanism 1, and the first unwinding mechanism 1 is used to unwind the pole piece roll material 10; the first cutting mechanism 2 is arranged downstream of the first unwinding mechanism 1, and the first cutting mechanism 2 is used to cut the pole piece roll material 10 unwound by the first unwinding mechanism 1 to form pole pieces 101, so as to be able to cut the wound pole piece roll material 10 into a plurality of pole pieces 101; the conveying mechanism 3 comprises a first conveying piece 31 and a second conveying piece 32, and along the Z-axis direction, the second conveying piece 32 is arranged above the first conveying piece 31, and the conveying direction of the first conveying piece 31 is opposite to the conveying direction of the second conveying piece 32, the first conveying piece 31 is used to adsorb and convey the pole pieces 101 to the space between the first conveying piece 31 and the second conveying piece 32, and the second conveying piece 32 is used to flatten and adsorb the pole pieces 101 conveyed on the first conveying piece 31.

[0048] The pole piece cutting and stacking device in the embodiment changes the specific structure of the conveying mechanism 3 and the actual conveying mode of the pole pieces 101 relative to the prior art; by making the conveying mechanism 3 comprise the first conveying piece 31 and the second conveying piece 32, and along the Z-axis direction, the second conveying piece 32 is arranged above the first conveying piece 31, and the conveying direction of the first conveying piece 31 is opposite to the conveying direction of the second conveying piece 32, so that the first conveying piece 31 can adsorb and convey the pole pieces 101 to the space between the first conveying piece 31 and the second conveying piece 32, thereby making the second conveying piece 32 flatten and adsorb the pole pieces 101 conveyed on the first conveying piece 31, that is, the pole pieces 101 can be flattened by the mutual pressing action between the first conveying piece 31 and the second conveying piece 32, so as to eliminate the upward bending and arching of the middle part of the pole pieces 101, thereby being able to guarantee the conveying stability of the second conveying piece 32 to the pole pieces 101 in the subsequent process, and being able to guarantee the effect of roll pressing and bonding between the pole pieces 101 and the diaphragm pieces 201 in the subsequent process, thereby being able to guarantee the quality of the formed composite pole pieces.

[0049] Furthermore, the pole pieces 101 are flattened while being conveyed by the first conveying piece 31 and the second conveying piece 32, which does not require additional operations, so that the flattening operation of the pole pieces 101 is relatively simple and convenient; and the pole pieces 101 can be flattened while being conveyed, thereby saving time and being able to improve work efficiency. Further, Figures 1 to 3 As shown, the structure of the second conveying piece 32 is the same as that of the first conveying piece 31, and only the specific structure of the first conveying piece 31 will be described in detail below, and the structure of the second conveying piece 32 will not be described in detail, and the structure of the second conveying piece 32 can be referred to the description of the structure of the first conveying piece 31.

[0050] Specifically, as Figures 1 to 3As shown, the first conveying member 31 comprises a conveying belt 311, a driving wheel 312 and a driven wheel 313; wherein the opposite ends of the conveying belt 311 are sleeved on the driving wheel 312 and the driven wheel 313 respectively, and the driving wheel 312 is rotatable to drive the conveying belt 311 and the driven wheel 313 to move, so as to convey the pole piece 101 through the conveying belt 311. Specifically, the driving wheel 312 can be driven to rotate by a servo motor.

[0051] It is worth noting that the actual vertical distance between the upper end of the conveying belt 311 of the first conveying member 31 and the lower end of the conveying belt 311 of the second conveying member 32, and the specific conveying speed of the conveying belt 311 of the first conveying member 31 and the conveying belt 311 of the second conveying member 32 can be adjusted to ensure that the specific pressing force of the first conveying member 31 and the second conveying member 32 on the pole piece 101 is appropriate, and the problem of excessive or insufficient pressing force does not occur.

[0052] Further, as shown in Figure 2 and Figure 3 , the conveying direction of the conveying belt 311 of the first conveying member 31 is opposite to the conveying direction of the conveying belt 311 of the second conveying member 32, so as to ensure that the pole piece 101 is conveyed by the opposite conveying actions of the first conveying member 31 and the second conveying member 32, and the pole piece 101 is pressed flat at the same time.

[0053] Specifically, the conveying direction of the conveying belt 311 of the first conveying member 31 is clockwise, as indicated by the arrow A in Figure 2 and Figure 3 ; correspondingly, the conveying direction of the conveying belt 311 of the second conveying member 32 is counterclockwise, as indicated by the arrow B in Figure 3 .

[0054] Specifically, as shown in Figure 2 and Figure 3As shown, first, the lower end of the conveying belt 311 of the first conveying member 31 adsorbs and conveys the pole piece 101 to convey the pole piece 101 to the upper end of the conveying belt 311 of the first conveying member 31, at this time, the pole piece 101 with the middle part curved and arched upward is turned upside down to become the pole piece 101 with the middle part curved and concave downward, that is, the pole piece 101 is turned upside down once; then, the lower end of the conveying belt 311 of the second conveying member 32 adsorbs and conveys the pole piece 101 on the upper end of the conveying belt 311 of the first conveying member 31, that is, the lower end of the conveying belt 311 of the second conveying member 32 presses the pole piece 101 with the middle part curved and concave downward along the Z axis downward, so as to flatten the whole pole piece 101; then, under the conveying action of the conveying belt 311 of the second conveying member 32, the pole piece 101 adsorbed by the lower end of the conveying belt 311 of the second conveying member 32 is conveyed to the upper end of the conveying belt 311 of the second conveying member 32, and the pole piece 101 is turned upside down twice; at this time, the pole piece 101 is adsorbed by the conveying belt 311 of the second conveying member 32, and the conveying belt 311 of the first conveying member 31 releases the adsorption of the pole piece 101. The specific conveying directions of the pole piece 101 in the first conveying member 31 and the second conveying member 32 are shown by arrows C in Figure 2 and Figure 3 .

[0055] As shown in Figure 3 , the pole piece 101 is turned upside down twice by the conveying belt 311 of the first conveying member 31 and the conveying belt 311 of the second conveying member 32 during conveying, so as to facilitate the pole piece 101 to have the automatic flattening trend under the turning action and the gravity of the pole piece 101 itself, thereby better ensuring the flatness of the whole pole piece 101.

[0056] Moreover, by arranging the first conveying member 31 and the second conveying member 32 to be used in cooperation, on the one hand, the conveying distances of the first conveying member 31 and the second conveying member 32 can be shortened, so as to avoid the pole piece 101 from falling off from the first conveying member 31 or the second conveying member 32 due to the bending and the gravity, thereby better ensuring the conveying stability and reliability of the first conveying member 31 and the second conveying member 32 to the pole piece 101; on the other hand, the conveying distances between the first conveying member 31 and the second conveying member 32 are cooperated, so as to convey the pole piece 101 to the required processing position without the need of additional conveying structure.

[0057] Further, a plurality of negative pressure nozzles (not shown in the figure) are arranged on each conveying belt 311, and the plurality of negative pressure nozzles are distributed along the annular belt length of the conveying belt 311, that is, the negative pressure nozzles are arranged at positions from the lower end to the upper end of the conveying belt 311, so as to be able to vacuum adsorb the pole piece 101 through the negative pressure nozzles; on the one hand, the adsorption stability of the conveying belt 311 to the pole piece 101 can be ensured, and the problem of the pole piece 101 falling off the conveying belt 311 can be avoided; on the other hand, the problem of the negative pressure nozzles damaging the pole piece 101 can be avoided, so as to better protect the pole piece 101. Among them, the negative pressure nozzles can adopt the common vacuum nozzles in the prior art.

[0058] Specifically, as shown in Figure 1 and Figure 3 , in the Z-axis direction, the projection of at least part of the conveying belt 311 of the second conveying member 32 coincides with the projection of the conveying belt 311 of the first conveying member 31, that is, the conveying belt 311 of the first conveying member 31 and the conveying belt 311 of the second conveying member 32 can be arranged in a staggered manner; on the one hand, the lower end of the conveying belt 311 of the second conveying member 32 can be ensured to press against the pole piece 101 at the upper end of the conveying belt 311 of the first conveying member 31, and the smoothness of the flattening operation of the pole piece 101 can be ensured; on the other hand, the entire conveying distance of the pole piece 101 can be ensured through the staggered arrangement of the conveying belt 311 of the first conveying member 31 and the conveying belt 311 of the second conveying member 32, so as to be able to convey the pole piece 101 to the required machining position without the need for additional conveying structures.

[0059] Specifically, the above-mentioned first unwinding mechanism 1 can adopt the common unwinding roller structure in the prior art, and the first cutting mechanism 2 can adopt the common cutting structure in the prior art. Here, the specific structure and working principle of the first unwinding mechanism 1 and the first cutting mechanism 2 will not be described in detail.

[0060] Further, as shown in Figure 1 , the pole piece cutting and folding device further comprises a second unwinding mechanism 4, a second cutting mechanism 5 and a roller pressing mechanism 6; wherein the diaphragm roll material 20 is wound on the second unwinding mechanism 4, the second unwinding mechanism 4 is used for unwinding the diaphragm roll material 20, and the second unwinding mechanism 4 is located on one side of the conveying mechanism 3; the second cutting mechanism 5 is arranged downstream of the second unwinding mechanism 4, and the second cutting mechanism 5 is used for cutting the diaphragm roll material 20 unwound by the second unwinding mechanism 4 to form the diaphragm sheet 201; the roller pressing mechanism 6 is arranged downstream of the conveying mechanism 3 and the second cutting mechanism 5, and the roller pressing mechanism 6 is used for rolling and bonding the diaphragm sheet 201 and the pole piece 101 to form the composite pole piece.

[0061] Specifically, the diaphragm sheet 201 and the diaphragm roll 20 involved in the embodiment are substantially the same diaphragm, and only the different shapes of the diaphragm are distinguished by different names. In addition, the second unwinding mechanism 4 can adopt the common unwinding roll structure in the prior art, and the second cutting mechanism 5 can adopt the common cutting structure in the prior art. Here, the specific structure and working principle of the second unwinding mechanism 4 and the second cutting mechanism 5 will not be described in detail.

[0062] Further, as shown in Figure 1 The rolling mechanism 6 includes a first pressure roller 61 and a second pressure roller 62. The first pressure roller 61 is fixedly arranged. The second pressure roller 62 is arranged on one side of the first pressure roller 61. The second pressure roller 62 can move towards or away from the first pressure roller 61. The pole piece 101 and the diaphragm sheet 201 are inserted between the first pressure roller 61 and the second pressure roller 62 for rolling and bonding, thereby forming the composite pole piece.

[0063] By allowing the second pressure roller 62 to move towards or away from the first pressure roller 61, the gap between the first pressure roller 61 and the second pressure roller 62 can be adjusted. On the one hand, the gap between the first pressure roller 61 and the second pressure roller 62 can be adjusted according to pole pieces 101 of various sizes, so that pole pieces 101 and diaphragm sheets 201 of various sizes can be rolled and bonded, and the applicability and versatility of the pole piece cutting and stacking device are better. On the other hand, the gap between the first pressure roller 61 and the second pressure roller 62 can be adjusted to be appropriate, so that the rolling and bonding of the first pressure roller 61 and the second pressure roller 62 to the pole piece 101 and the diaphragm sheet 201 is more stable, thereby better ensuring the quality of the composite pole piece.

[0064] Further, as shown in Figure 1 The pole piece cutting and stacking device further includes a transfer mechanism 7 arranged between the conveying mechanism 3 and the rolling mechanism 6. The transfer mechanism 7 is used to transfer the pole piece 101 on the upper end of the conveying belt 311 of the second conveying member 32 to the rolling mechanism 6, so as to realize the transfer conveying of the pole piece 101. The transfer mechanism 7 can adopt the common six-axis mechanical hand structure in the prior art.

[0065] Specifically, as shown in Figure 1 The first unwinding mechanism 1, the first cutting mechanism 2, the conveying mechanism 3 and the transfer mechanism 7 are arranged on the opposite sides of the rolling mechanism 6, so as to reasonably adjust the overall working tempo of the first unwinding mechanism 1, the first cutting mechanism 2, the conveying mechanism 3 and the transfer mechanism 7 on the two sides, so that the rolling mechanism 6 can always be in a rolling working state, thereby improving the rolling efficiency, and further improving the working efficiency of the entire pole piece cutting and stacking device.

[0066] It is worth noting that, as shown in Figures 1 to 3As shown, a tape conveying member 11 can be arranged between the first unwinding mechanism 1 and the first conveying member 31, so that the pole piece 101 cut from the pole piece roll 10 unwound by the first unwinding mechanism 1 can be automatically conveyed to the first conveying member 31 by the tape conveying member 11; as Figure 1 As shown, a plurality of conveying rollers 12 (only one is shown in the figure) are arranged between the second unwinding mechanism 4 and the rolling mechanism 6, so that the diaphragm roll 20 unwound by the second unwinding mechanism 4 can be transported by each conveying roller 12, and the diaphragm piece 201 cut therefrom can be conveyed to the rolling mechanism 6. The tape conveying member 11 can adopt a common tape conveying structure in the prior art, which is not limited here.

[0067] Further, as shown, Figure 1 The pole piece cutting and stacking device further comprises a stacking mechanism 8, which is used to sequentially stack each composite pole piece to complete the automatic stacking process of the composite pole piece; specifically, the stacking mechanism 8 comprises a manipulator and a stacking platform; wherein the manipulator is arranged on one side of the rolling mechanism 6; the stacking platform is arranged below the first roller 61 and the second roller 62 of the rolling mechanism 6, and the manipulator is used to grab the composite pole piece formed by the rollers of the rolling mechanism 6, and sequentially stack the grabbed composite pole piece on the stacking platform by the manipulator to form a plurality of stacked composite pole pieces.

[0068] Specifically, as shown, Figure 1 The pole piece cutting and stacking device further comprises an identification member 9 arranged between the first cutting mechanism 2 and the first conveying member 31 of the conveying mechanism 3, which is used to detect the coating appearance of the pole piece 101, that is, the identification member 9 specifically detects the coating amount and appearance defects of the pole piece 101, so as to ensure that only the pole piece 101 that passes the identification can flow into the first conveying member 31, thereby ensuring the quality of the composite pole piece formed by subsequent rolling, and better reducing the scrap rate of the composite pole piece. One identification member 9 is arranged between each first cutting mechanism 2 and the first conveying member 31, and the identification member 9 can specifically adopt a CCD vision sensor.

[0069] The specific working process of the pole piece cutting and stacking device in the embodiment is as follows:

[0070] Firstly, the first unwinding mechanism 1 unwinds the pole piece roll 10 to the first cutting mechanism 2, so that the first cutting mechanism 2 cuts the pole piece 10 to form each pole piece 101; then the pole piece 101 is transported to the identification member 9 to detect the coating appearance of the pole piece 101 through the identification member 9 to identify the qualified pole piece 101; then the identified qualified pole piece 101 is transported to the first conveying member 31, so that the negative pressure suction nozzle at the lower end of the conveying belt 311 of the first conveying member 31 vacuum adsorbs the pole piece 101, and with the transmission of the conveying belt 311 of the first conveying member 31, the pole piece 101 at the lower end of the conveying belt 311 of the first conveying member 31 can be moved to the upper end of the conveying belt 311 of the first conveying member 31.

[0071] Then, the lower end of the conveying belt 311 of the second conveying member 32 presses against the pole piece 101 at the upper end of the conveying belt 311 of the first conveying member 31 to press and flatten the entire pole piece 101; at the same time, the vacuum adsorption of the pole piece 101 by the negative pressure suction nozzle of the conveying belt 311 of the first conveying member 31 is released, and at this time, the pole piece 101 is vacuum adsorbed by the negative pressure suction nozzle at the lower end of the conveying belt 311 of the second conveying member 32; then, with the transmission of the conveying belt 311 of the second conveying member 32, the pole piece 101 at the lower end of the conveying belt 311 of the second conveying member 32 can be moved to the upper end of the conveying belt 311 of the second conveying member 32.

[0072] Then, the transfer mechanism 7 transfers the pole piece 101 at the upper end of the conveying belt 311 of the second conveying member 32 to between the first compression roller 61 and the second compression roller 62; at the same time, the second unwinding mechanism 4 unwinds the diaphragm roll 20 to the second cutting mechanism 5, so that the second cutting mechanism 5 cuts the diaphragm roll 20 to form a diaphragm piece 201, and the diaphragm piece 201 is transported to between the first compression roller 61 and the second compression roller 62; at this time, the pole piece 101 and the diaphragm piece 201 are simultaneously inserted between the first compression roller 61 and the second compression roller 62 to be bonded by the roller pressure between the first compression roller 61 and the second compression roller 62 to form a composite pole piece.

[0073] Finally, the robot grasps the composite pole piece formed by the roller pressure between the first compression roller 61 and the second compression roller 62, and places the grasped composite pole piece on the stacking platform in sequence to form a plurality of stacked composite pole pieces on the stacking platform; thereby completing the entire cutting and stacking process of the composite pole piece.

[0074] The pole piece cutting and stacking device in the embodiment can press and flatten the pole piece 101 through the pressing action between the first conveying member 31 and the second conveying member 32, so as to eliminate the upward bending and arching of the middle part of the pole piece 101; the conveying distance of the first conveying member 31 and the second conveying member 32 can be shortened, so as to ensure the stability and reliability of the pole piece 101 conveyed by the first conveying member 31 and the second conveying member 32; meanwhile, the whole conveying distance of the pole piece 101 can be ensured, so as to convey the pole piece 101 to the required processing position.

[0075] The pole piece cutting and stacking device in the embodiment can press and flatten the pole piece 101 through the pressing action between the first conveying member 31 and the second conveying member 32, so as to eliminate the upward bending and arching of the middle part of the pole piece 101; the conveying distance of the first conveying member 31 and the second conveying member 32 can be shortened, so as to ensure the stability and reliability of the pole piece 101 conveyed by the first conveying member 31 and the second conveying member 32; meanwhile, the whole conveying distance of the pole piece 101 can be ensured, so as to convey the pole piece 101 to the required processing position.

[0076] The above is only the preferred embodiment of the present application, and for those skilled in the art, the specific implementation and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A pole piece slitting device characterized by, The application relates to a polar plate cutting and stacking device. The polar plate cutting and stacking device comprises a first unwinding mechanism (1) for unwinding a polar plate roll (10), a first cutting mechanism (2) arranged downstream of the first unwinding mechanism (1) and used for cutting the polar plate roll (10) unwound by the first unwinding mechanism (1) to form a polar plate (101), a conveying mechanism (3) comprising a first conveying member (31) and a second conveying member (32), wherein the second conveying member (32) is arranged above the first conveying member (31) along the Z-axis direction, the conveying direction of the first conveying member (31) is opposite to the conveying direction of the second conveying member (32), the first conveying member (31) is used for adsorbing and conveying the polar plate (101) to the space between the first conveying member (31) and the second conveying member (32), and the second conveying member (32) is used for flattening and adsorbing and conveying the polar plate (101) on the first conveying member (31). The second conveying member (32) has the same structure as the first conveying member (31), and the first conveying member (31) comprises a conveying belt (311), a driving wheel (312) and a driven wheel (313), the opposite ends of the conveying belt (311) are sleeved on the driving wheel (312) and the driven wheel (313) respectively, the driving wheel (312) drives the conveying belt (311) and the driven wheel (313) to move, and the conveying direction of the conveying belt (311) of the first conveying member (31) is opposite to the conveying direction of the conveying belt (311) of the second conveying member (32). The lower end of the conveying belt (311) of the first conveying member (31) can adsorb and convey the polar plate (101) to the upper end of the conveying belt (311) of the first conveying member (31), so that the lower end of the conveying belt (311) of the second conveying member (32) can flatten and adsorb and convey the polar plate (101) on the upper end of the conveying belt (311) of the first conveying member (31).

2. The pole piece slitting apparatus of claim 1 wherein, The conveying belt (311) is provided with a plurality of negative pressure nozzles, the negative pressure nozzles are distributed along the annular belt of the conveying belt (311), and the negative pressure nozzles are used for vacuum adsorbing the polar plate (101). The projection of at least part of the conveying belt (311) of the second conveying member (32) along the Z-axis direction coincides with the projection of the conveying belt (311) of the first conveying member (31). The polar plate cutting and stacking device further comprises a second unwinding mechanism (4) for unwinding a diaphragm roll (20), the second unwinding mechanism (4) is arranged on one side of the conveying mechanism (3), a second cutting mechanism (5) arranged downstream of the second unwinding mechanism (4) and used for cutting the diaphragm roll (20) unwound by the second unwinding mechanism (4) to form a diaphragm sheet (201), and a third conveying mechanism (6) arranged downstream of the second cutting mechanism (5) and used for conveying the diaphragm sheet (201) cut by the second cutting mechanism (5).

3. The pole piece slitting apparatus of claim 2 wherein, ​ 4. The pole piece slitting apparatus of claim 2 wherein, ​ 5. The pole piece slitting apparatus of any one of claims 1-4, wherein, ​ ​ ​ A rolling mechanism (6) is arranged downstream of the conveying mechanism (3) and the second cutting mechanism (5), and is used to roll and bond the diaphragm sheet (201) and the pole piece (101) to form a composite pole piece.

6. The pole piece slitting apparatus of claim 5 wherein, The rolling mechanism (6) comprises: a first pressure roller (61) fixedly arranged; a second pressure roller (62) oppositely arranged on one side of the first pressure roller (61), which can approach or move away from the first pressure roller (61), and the pole piece (101) and the diaphragm sheet (201) are rolled and bonded between the first pressure roller (61) and the second pressure roller (62).

7. The pole piece slitting apparatus of claim 5 wherein, The pole piece cutting and stacking device further comprises: a transfer mechanism (7) arranged between the conveying mechanism (3) and the rolling mechanism (6), which is used to transfer and access the pole piece (101) on the second conveying member (32) to the rolling mechanism (6).

8. The pole piece slitting apparatus of claim 7 wherein, The opposite sides of the rolling mechanism (6) are respectively provided with the first unwinding mechanism (1), the first cutting mechanism (2), the conveying mechanism (3) and the transfer mechanism (7).

9. The pole piece cutting and stacking apparatus of claim 5 wherein, The pole piece cutting and stacking device further comprises a stacking mechanism (8) for sequentially stacking each composite pole piece; The stacking mechanism (8) comprises: a manipulator arranged on one side of the rolling mechanism (6); a stacking platform arranged below the rolling mechanism (6), and the manipulator is used to grab the composite pole piece formed by the pressure roller of the rolling mechanism (6) and sequentially stack it on the stacking platform.

10. The pole piece slitting apparatus of any one of claims 1-4, wherein, The pole piece cutting and stacking device further comprises: a recognition member (9) arranged between the first cutting mechanism (2) and the conveying mechanism (3), which is used to detect the coating amount and appearance of the pole piece (101).

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