Single-diaphragm unwinding and laminating machine

Abstract

The utility model discloses a single-diaphragm unreeling and laminating machine, which comprises a diaphragm driving and feeding group arranged in front of a laminating table and used for conveying diaphragms towards the direction of the laminating table; the front diaphragm grabbing clamp is arranged between the diaphragm driving and feeding group and the lamination table and is used for clamping the diaphragm conveyed by the diaphragm driving and feeding group; the front diaphragm gripper driving group is fixedly connected with the front diaphragm gripper, is arranged at the side part of the lamination table, and is used for driving the front diaphragm gripper clamping the diaphragm to move towards the rear part of the lamination table and driving the front diaphragm gripper to reset; when the front diaphragm grabbing clamp driving group drives the front diaphragm grabbing clamp which clamps the diaphragm to move towards the rear part of the lamination table and the moving distance of the front diaphragm grabbing clamp is from 0 to L, the diaphragm conveying speed of the diaphragm driving feeding group is greater than the moving speed of the front diaphragm grabbing clamp; at the moment, the diaphragm between the diaphragm driving feeding set and the front diaphragm gripper is in a relaxed state, the surface tension of the diaphragm is consistent, and stress generated in the diaphragm, surface wrinkling of the diaphragm and deformation of the diaphragm can be avoided.

Description

Technical Field

[0001] The invention relates to the field of lithium ion battery manufacturing devices, and in particular to a single diaphragm unwinding stacking machine suitable for use in a lithium ion battery core stacking process. Background Art

[0002] The cell of a lithium-ion battery is generally formed by stacking positive and negative electrodes alternately, and an insulating separator needs to be inserted between the positive and negative electrodes. At present, the manufacturing process of the cell is divided into two methods: strip stacking and single stacking, that is, continuous separators and single separator stacking are used during stacking.

[0003] For the strip stacking process, the positive and negative electrodes are placed alternately on the stacking platform during stacking, and the strip-shaped separator is pulled back and forth above the stacking platform. After the positive electrode or negative electrode is stacked, it is covered on the surface of the positive electrode or negative electrode, and then the separator is cut. In this stacking method, the strip-shaped separator is tensioned and pulled back and forth during the stacking process, and there is stress inside. After cutting, wrinkles will appear on the surface of the separator, affecting the quality of the battery cell. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a single diaphragm unwinding and laminating machine which can avoid the problems of wrinkles caused by uneven surface tension of the diaphragm and stretching deformation of the diaphragm in a strip lamination process.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A single-diaphragm unwinding and laminating machine, comprising:

[0007] A diaphragm driven feeding group, which is arranged in front of the lamination table and is used to transport the diaphragm toward the lamination table;

[0008] A front diaphragm gripper, which is disposed between the diaphragm drive feeding group and the lamination table and is used to clamp the diaphragm conveyed by the diaphragm drive feeding group;

[0009] A front diaphragm gripper driving group, which is fixedly connected to the front diaphragm gripper and disposed on the side of the stacking platform, and is used to drive the front diaphragm gripper holding the diaphragm to move toward the rear of the stacking platform and to drive the front diaphragm gripper to reset;

[0010] When the front diaphragm clamp driving group drives the front diaphragm clamp holding the diaphragm to move toward the rear of the stacking table, and the front diaphragm clamp moves a distance from 0 to L (L>0), the speed at which the diaphragm driving feeding group transmits the diaphragm is greater than the moving speed of the front diaphragm clamp.

[0011] The single-diaphragm unwinding and laminating machine as described above further comprises a rear diaphragm gripper, which is arranged behind the laminating platform and is used to clamp the diaphragm transferred by the front diaphragm gripper;

[0012] A rear diaphragm clamp driving group is fixedly connected to the rear diaphragm clamp and is arranged on the side of the stacking platform, and is used to drive the rear diaphragm clamp to move toward the front of the stacking platform and drive the rear diaphragm clamp holding the diaphragm to reset to the rear of the stacking platform.

[0013] As described above, the single-diaphragm unwinding and laminating machine has a front gripper material clamping position and a rear gripper material unloading position on the front and rear sides of the laminating table, respectively; and a diaphragm handover position is provided above the laminating table;

[0014] The front diaphragm gripper driving group can drive the front diaphragm gripper to reciprocate between the front gripper material position and the diaphragm junction position;

[0015] The rear diaphragm gripper driving group can drive the rear diaphragm gripper to reciprocate between the diaphragm junction position and the rear gripper lowering position;

[0016] When the front diaphragm gripper is located at the front gripper clamping position, the diaphragm conveyed by the diaphragm driving feeding group can be clamped;

[0017] When the front diaphragm gripper moves to the diaphragm junction position, the front diaphragm gripper releases the gripping of the diaphragm, and at the same time, the rear diaphragm gripper is located at the diaphragm junction position and grips the diaphragm transferred by the front diaphragm gripper;

[0018] When the rear diaphragm gripping clamp moves to the rear gripping clamp lowering position, the rear diaphragm gripping clamp releases the gripping of the diaphragm.

[0019] As described above, in the single-diaphragm unwinding and laminating machine, the length from the material clamping position of the front gripper to the membrane junction position is D, and the relationship between D and L is: D>L;

[0020] When the front diaphragm gripper moves toward the rear of the lamination table by a distance greater than L and less than D, the speed at which the diaphragm driving feeding group transmits the diaphragm is less than the moving speed of the front diaphragm gripper.

[0021] The single-diaphragm unwinding and laminating machine as described above, wherein a frame seat is provided below the laminating table, and a left guide path and a right guide path are provided on the frame seat and located on the left and right sides of the laminating table respectively;

[0022] The length of the front diaphragm gripper is greater than the width of the diaphragm, and the front diaphragm gripper drive group includes a left front diaphragm gripper drive group arranged on the left guide path and a right front diaphragm gripper drive group arranged on the right guide path; the left front diaphragm gripper drive group is fixedly connected to the left end of the front diaphragm gripper, and the right front diaphragm gripper drive group is fixedly connected to the right end of the front diaphragm gripper;

[0023] The length of the rear diaphragm clamp is greater than the width of the diaphragm, and the rear diaphragm clamp driving group includes a left rear diaphragm clamp driving group arranged on the left guide path and a right rear diaphragm clamp driving group arranged on the right guide path; the left rear diaphragm clamp driving group is fixedly connected to the left end of the rear diaphragm clamp, and the right rear diaphragm clamp driving group is fixedly connected to the right end of the rear diaphragm clamp.

[0024] The single-diaphragm unwinding and stacking machine as described above, wherein the diaphragm driven feeding group comprises a left wall plate, a right wall plate arranged opposite to the left wall plate, a first feeding roller rotatably arranged between the left wall plate and the right wall plate, a second feeding roller rotatably arranged between the left wall plate and the right wall plate, and a roller driving member;

[0025] The fixed end of the roller driving member is arranged on the left wall plate or the right wall plate, and the roller driving member is used to drive the first feeding roller and / or the second feeding roller to rotate;

[0026] When the roller driving member drives the first feeding roller and / or the second feeding roller to rotate, the diaphragm is fed out from between the first feeding roller and the second feeding roller.

[0027] The single-diaphragm unwinding and stacking machine as described above, wherein the front diaphragm gripper comprises a front lower pressure plate, a front mounting frame arranged on the front lower pressure plate, a front upper pressure plate driving member connected to the front mounting frame at a fixed end, and a front upper pressure plate fixedly connected to the output end of the front upper pressure plate driving member;

[0028] When the front upper pressing plate driving member extends, the front upper pressing plate is driven to move toward the front lower pressing plate, so that the diaphragm is clamped between the front upper pressing plate and the front lower pressing plate; when the front upper pressing plate driving member retracts, the front upper pressing plate is driven away from the front lower pressing plate, and the clamping of the diaphragm is released;

[0029] The rear diaphragm gripper comprises a rear lower pressing plate, a rear mounting frame arranged on the rear lower pressing plate, a rear upper pressing plate driving member whose fixed end is connected to the rear mounting frame, and a rear upper pressing plate fixedly connected to the output end of the rear upper pressing plate driving member;

[0030] When the rear upper pressure plate driving member extends out, it drives the rear upper pressure plate to move toward the rear lower pressure plate so that the diaphragm is clamped between the rear upper pressure plate and the rear lower pressure plate; when the rear upper pressure plate driving member retracts, it drives the rear upper pressure plate away from the rear lower pressure plate to release the clamping of the diaphragm.

[0031] In the single-diaphragm unwinding and stacking machine as described above, the length of the front upper pressing plate is greater than the width of the diaphragm; the front upper pressing plate driving members are multiple and are arranged at intervals along the length direction of the front upper pressing plate;

[0032] The length of the rear upper pressing plate is greater than the width of the diaphragm; the rear upper pressing plate driving parts are multiple and are arranged at intervals along the length direction of the rear upper pressing plate.

[0033] The single-diaphragm unwinding and laminating machine as described above, wherein the front diaphragm gripper driving group further comprises a front lifting group for driving the front diaphragm gripper to lift and lower relative to the laminating platform;

[0034] The rear diaphragm gripper driving group also includes a rear lifting group for driving the rear diaphragm gripper to rise and fall relative to the lamination platform.

[0035] The single-diaphragm unwinding and laminating machine as described above, wherein laminating plate groups are provided on both sides of the laminating platform, and the laminating plate groups are used to fix the diaphragm on the laminating platform;

[0036] A cutter is provided along the width direction of the diaphragm between the material clamping position of the front gripper and the junction position of the diaphragm;

[0037] When the laminated pressing plate group fixes the diaphragm, the cutter can be used to cut off the diaphragm between the front gripping clamping position and the diaphragm junction position.

[0038] The beneficial effects of the utility model are:

[0039] In the utility model, an active diaphragm drive feeding group is provided to control the output speed of the diaphragm, and a front diaphragm clamp drive group is provided to drive the front diaphragm clamp to reciprocate on the stacking table. During the movement distance of the front diaphragm clamp from 0 to L (L>0), the speed at which the diaphragm drive feeding group transmits the diaphragm is greater than the moving speed of the front diaphragm clamp. At this time, the diaphragm between the diaphragm drive feeding group and the front diaphragm clamp is in a relaxed state, and the surface tension of the diaphragm is consistent, which can avoid the generation of stress inside the diaphragm and the wrinkling and deformation of the diaphragm surface caused by the stress; and avoid the influence of the diaphragm traction link on the quality of the battery cell in the stacking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0041] Figure 1It is a structural schematic diagram of the single diaphragm unwinding and laminating machine in the utility model;

[0042] Figure 2 It is a structural schematic diagram of the lamination platform, the front diaphragm gripper, the rear diaphragm gripper, the front diaphragm gripper drive group, the rear diaphragm gripper drive group and the lamination pressing plate group in the utility model;

[0043] Figure 3 yes Figure 2 A magnified view of the structure of the middle A part;

[0044] Figure 4 It is a schematic diagram of the structure of the front diaphragm grasping clamp or the rear diaphragm grasping clamp in the utility model;

[0045] Figure 5 yes Figure 4 Sectional view along line EE;

[0046] Figure 6 It is a structural schematic diagram of the cutting knife in the utility model;

[0047] Figure 7 It is a structural schematic diagram of the diaphragm driven feeding group of the utility model;

[0048] Description of reference numerals:

[0049] 1. Lamination table; 11. Front gripper clamping position; 12. Rear gripper unloading position; 13. Diaphragm joint position; 14. Lamination pressing plate group; 2. Diaphragm; 3. Frame seat; 31. Left guideway; 32. Right guideway; 4. Diaphragm drive feeding group; 41. First feeding roller; 401. Left wall panel; 402. Right wall panel; 42. Second feeding roller; 43. Roller driving member; 5. Front diaphragm gripper; 51. Front lower pressing plate; 52. Front mounting frame; 53. Front upper Pressure plate drive; 54, front upper pressure plate; 6, rear diaphragm gripper; 61, rear lower pressure plate; 62, rear mounting frame; 63, rear upper pressure plate drive; 64, rear upper pressure plate; 7, front diaphragm gripper drive group; 71, left front diaphragm gripper drive group; 72, right front diaphragm gripper drive group; 73, front lifting group; 8, rear diaphragm gripper drive group; 81, left rear diaphragm gripper drive group; 82, right rear diaphragm gripper drive group; 83, rear lifting group; 91, cutter. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0051] Reference Figure 1 , a single diaphragm unwinding laminating machine, comprising: a diaphragm driving feeding group 4, which is arranged in front of a laminating table 1 and is used to transport the diaphragm 2 toward the laminating table 1;

[0052] A front diaphragm gripper 5, which is disposed between the diaphragm drive feeding group 4 and the lamination table 1, and is used to clamp the diaphragm 2 conveyed by the diaphragm drive feeding group 4;

[0053] A front diaphragm gripper driving group 7, which is fixedly connected to the front diaphragm gripper 5 and is disposed on the side of the stacking platform 1, and is used to drive the front diaphragm gripper 5 holding the diaphragm 2 to move toward the rear of the stacking platform 1 and to drive the front diaphragm gripper 5 to reset;

[0054] When the front diaphragm clamp driving group 7 drives the front diaphragm clamp 5 holding the diaphragm 2 to move toward the rear of the stacking table 1, and the front diaphragm clamp 5 moves a distance from 0 to L (L>0), the speed at which the diaphragm driving feeding group 4 transmits the diaphragm 2 is greater than the moving speed of the front diaphragm clamp 5.

[0055] In the utility model, an active diaphragm drive feeding group is provided to control the output speed of the diaphragm, and a front diaphragm clamp drive group is provided to drive the front diaphragm clamp to reciprocate on the stacking table. During the movement distance of the front diaphragm clamp from 0 to L (L>0), the speed at which the diaphragm drive feeding group transmits the diaphragm is greater than the moving speed of the front diaphragm clamp. At this time, the diaphragm between the diaphragm drive feeding group and the front diaphragm clamp is in a relaxed state, and the surface tension of the diaphragm is consistent, which can avoid the generation of stress inside the diaphragm and the wrinkling and deformation of the diaphragm surface caused by the stress; and avoid the influence of the diaphragm traction link on the quality of the battery cell in the stacking process.

[0056] Reference Figure 1 to Figure 2 , further comprising a rear diaphragm gripper 6, which is disposed behind the lamination platform 1 and is used to clamp the diaphragm 2 transferred by the front diaphragm gripper 5;

[0057] The rear diaphragm clamp driving group 8 is fixedly connected to the rear diaphragm clamp 6 and is arranged on the side of the stacking platform 1, and is used to drive the rear diaphragm clamp 6 to move toward the front of the stacking platform 1 and drive the rear diaphragm clamp 6 holding the diaphragm 2 to return to the rear of the stacking platform 1.

[0058] Compared with only providing the front diaphragm gripper 5 and the front diaphragm gripper drive group 7 , the provision of the rear diaphragm gripper 6 and the rear diaphragm gripper drive group 8 can increase the lamination speed.

[0059] Reference Figure 1 to Figure 2 Specifically, a front gripper material clamping position 11 and a rear gripper material unloading position 12 are respectively provided on the front and rear sides of the lamination platform 1; a diaphragm joint position 13 is provided above the lamination platform 1;

[0060] The front diaphragm clamp driving group 7 can drive the front diaphragm clamp 5 to reciprocate between the front clamp material position 11 and the diaphragm junction position 13;

[0061] The rear diaphragm gripper driving group 8 can drive the rear diaphragm gripper 6 to reciprocate between the diaphragm junction position 13 and the rear gripper unloading position 12;

[0062] In the initial state, the diaphragm driving feeding group 4 transmits the diaphragm 2 toward the lamination table 1;

[0063] When the front diaphragm clamp driving group 7 drives the front diaphragm clamp 5 to move to the front clamp clamping position 11, the front diaphragm clamp 5 opens and clamps the diaphragm 2; then, driven by the rear diaphragm clamp driving group 8, it moves toward the diaphragm junction position 13; at the same time, driven by the rear diaphragm clamp driving group 8, the rear diaphragm clamp 6 moves toward the diaphragm junction position 13;

[0064] When the front diaphragm grasping clamp 5 and the rear diaphragm grasping clamp 6 are both located at the diaphragm junction 13, the front diaphragm grasping clamp 5 releases the gripping of the diaphragm 2, while the rear diaphragm grasping clamp 6 holds the diaphragm 2;

[0065] Subsequently, the front diaphragm gripper 5 drives the diaphragm 2 to move toward the rear gripper lowering position 12, and at the same time, the front diaphragm gripper 5 is reset;

[0066] Then the pole piece can be placed on the diaphragm 2 above the lamination table 1; the front diaphragm gripper, the front diaphragm gripper drive group 7, the rear diaphragm gripper 6 and the rear diaphragm gripper drive group 8 repeat the above process to achieve efficient lamination.

[0067] More specifically, the length from the front gripping clamping position 11 to the diaphragm junction position 13 is D, and the relationship between D and L is: D>L;

[0068] When the front diaphragm gripper 5 moves toward the rear of the lamination table 1 by a distance greater than L and less than D, the speed at which the diaphragm driving feeding group 4 transmits the diaphragm 2 is less than the moving speed of the front diaphragm gripper 5; that is, after the diaphragm 2 is pulled out to a certain length L, tension is then established on the diaphragm 2; the above is an example of creating tension by moving the front diaphragm gripper 5;

[0069] For example, the length from the front clamp material position 11 to the diaphragm junction position 13 is 0.50m (D=0.50m); when the current diaphragm clamp 5 drives the diaphragm 2 to move a distance from 0 to 0.15m (L=0.15m), the diaphragm driving feeding group 4 transmits the diaphragm at a speed of 0.10m / s, and the moving speed of the front diaphragm clamp is 0.05m / s. At this time, the front clamp material position 11 to the diaphragm junction position 13 is in a relaxed state; when the current diaphragm clamp 5 drives the diaphragm 2 to move a distance from 0.15m to 0.50m, the moving speed of the front diaphragm clamp is 0.05m / s, and the speed of the diaphragm driving feeding group transmitting the diaphragm is 0.027m / s. During this process, the state of the diaphragm 2 gradually changes from relaxation to tension; this example is only used to assist in understanding the size relationship between D and L in this embodiment, and does not limit the present scheme in any way.

[0070] The rear diaphragm clamp 6 may also move to create tension. At this time, the position from the diaphragm junction 13 to a certain position of the rear clamp unloading position 12 is d, and the length from the front clamp clamping position 11 to the point d is D1. After the rear diaphragm clamp 6 takes over the diaphragm 2 from the diaphragm junction 13, after the total moving length of the free end of the diaphragm 2 on the stacking table 1 reaches D1, the speed at which the diaphragm driving feeding group 4 transmits the diaphragm 2 is less than the moving speed of the rear diaphragm clamp 6.

[0071] For example, the length from the front clamp material level 11 to the membrane intersection 13 is 0.10m, the length from the membrane intersection 13 to the point d is 0.05m (D1: 0.10m+0.05m=0.15m), and the distance from the front clamp material level 11 to the rear clamp material level 12 is 0.50m; when the current membrane clamp 5 drives the free end of the membrane 2 to move from 0 to 0.10m, the membrane driving feeding group 4 transmits the membrane at a speed of 0.10m / s, and the moving speed of the front membrane clamp is 0.05m / s; when the rear membrane clamp 6 takes over the membrane 2 from the membrane intersection 13, it drives the free end of the membrane 2 to move from 0.10m to 0. During the process of 15m, the speed of the diaphragm driven feeding group 4 to transmit the diaphragm is maintained at 0.10m / s, and the moving speed of the rear diaphragm gripper 6 is 0.05m / s; when the rear diaphragm gripper 6 moves to point d (that is, the total moving length of the free end of the diaphragm 2 on the stacking table 1 reaches D1), the rear diaphragm gripper 6 drives the free end of the diaphragm 2 to move from 0.15m to 0.50m, and the moving speed of the rear diaphragm gripper 6 is 0.05m / s, while the speed of the diaphragm driven feeding group 4 to transmit the diaphragm 2 is 0.027m / s. During this process, the state of the diaphragm 2 gradually changes from relaxation to tension; this example is only used to assist in understanding the relationship between D1 and d in this embodiment, and does not serve as any limitation to this scheme.

[0072] Reference Figure 1 As a preferred embodiment of any of the above schemes, a frame seat 3 is provided below the stacking platform 1, and a left guide path 31 and a right guide path 32 are provided on the frame seat 3 and located on the left and right sides of the stacking platform 1, respectively;

[0073] The length of the front diaphragm clamp 5 is greater than the width of the diaphragm 2, and the front diaphragm clamp driving group 7 includes a left front diaphragm clamp driving group 71 provided on the left guide path 31 and a right front diaphragm clamp driving group 72 provided on the right guide path 32; the left front diaphragm clamp driving group 71 is fixedly connected to the left end of the front diaphragm clamp 5, and the right front diaphragm clamp driving group 72 is fixedly connected to the right end of the front diaphragm clamp 5;

[0074] The length of the rear diaphragm clamp 6 is greater than the width of the diaphragm 2, and the rear diaphragm clamp driving group 8 includes a left rear diaphragm clamp driving group 81 arranged on the left guide path 31 and a right rear diaphragm clamp driving group 82 arranged on the right guide path 32; the left rear diaphragm clamp driving group 81 is fixedly connected to the left end of the rear diaphragm clamp 6, and the right rear diaphragm clamp driving group 82 is fixedly connected to the right end of the rear diaphragm clamp 6.

[0075] The length of the front diaphragm clamp 5 and the rear diaphragm clamp 6 is greater than the width of the diaphragm 2, which can ensure that the clamping force between each point in the width direction of the diaphragm 2 is consistent and the clamping force is evenly distributed, thereby reducing the local clamping force in the width direction of the diaphragm 2 being too large, causing local deformation or damage to the diaphragm.

[0076] Specifically, the left front diaphragm clamp drive group 71, the right front diaphragm clamp drive group 72, the left rear diaphragm clamp drive group 81 and the right rear diaphragm clamp drive group 82 in this embodiment can be any structure in the prior art that can drive the front diaphragm clamp 5 and the rear diaphragm clamp 6, such as linear motor drive, hydraulic cylinder drive, screw drive, etc.

[0077] Reference Figure 7 The diaphragm driven feeding group 4 includes a left wall plate 401, a right wall plate 402 arranged opposite to the left wall plate 401, a first feeding roller 41 rotatably arranged between the left wall plate 401 and the right wall plate 402, a second feeding roller 42 rotatably arranged between the left wall plate 401 and the right wall plate 402, and a roller driving member 43;

[0078] The fixed end of the roller driving member 43 is disposed on the left wall panel 401 or the right wall panel 402, and the roller driving member 43 is used to drive the first feeding roller 41 and / or the second feeding roller 42 to rotate;

[0079] When the roller driving member 43 drives the first feeding roller 41 and / or the second feeding roller 42 to rotate, the diaphragm 2 is fed out from between the first feeding roller 41 and the second feeding roller 42 .

[0080] Specifically, the roller driving member 43 is a motor that can drive the first feeding roller 41 and / or the second feeding roller 42 to make axial movement; and the roller driving member 43 is connected to the first feeding roller 41 and / or the second feeding roller 42 directly or indirectly. When directly connected, the shaft core of the first feeding roller 41 and / or the second feeding roller 42 is fixedly connected to the output end of the roller driving member 43; when indirectly connected, refer to Figure 7 The output section of the roller driving member 43 can be connected to a gear, and the shaft core of the first feeding roller 41 and / or the second feeding roller 42 is also connected to the roller end gear of the roller driving member 43. The gear and the roller end gear are driven by a transmission belt, thereby driving the first feeding roller 41 and / or the second feeding roller 42 to rotate.

[0081] Reference Figure 4-Figure 5As a preferred embodiment of any of the above schemes, the front diaphragm gripper 5 includes a front lower pressing plate 51, a front mounting frame 52 provided on the front lower pressing plate 51, a front upper pressing plate driving member 53 whose fixed end is connected to the front mounting frame 52, and a front upper pressing plate 54 fixedly connected to the output end of the front upper pressing plate driving member 53;

[0082] When the front upper pressing plate driving member 53 extends, it drives the front upper pressing plate 54 to move toward the front lower pressing plate 51, so that the diaphragm 2 is clamped between the front upper pressing plate 54 and the front lower pressing plate 51; when the front upper pressing plate driving member 53 retracts, it drives the front upper pressing plate 54 away from the front lower pressing plate 51, releasing the clamping of the diaphragm 2;

[0083] The rear diaphragm gripper 6 comprises a rear lower pressing plate 61, a rear mounting frame 62 arranged on the rear lower pressing plate 61, a rear upper pressing plate driving member 63 whose fixed end is connected to the rear mounting frame 62, and a rear upper pressing plate 64 fixedly connected to the output end of the rear upper pressing plate driving member 63;

[0084] When the rear upper pressure plate driving member 63 extends out, it drives the rear upper pressure plate 64 to move toward the rear lower pressure plate 61, so that the diaphragm 2 is clamped between the rear upper pressure plate 64 and the rear lower pressure plate 61; when the rear upper pressure plate driving member 63 retracts, it drives the rear upper pressure plate 64 away from the rear lower pressure plate 61, releasing the clamping of the diaphragm 2.

[0085] In the present embodiment, the front upper pressure plate driving component 53 and the rear upper pressure plate driving component 63 are voice coil motors, which have the advantages of small size and light weight, and can reduce the probability of deformation of the front mounting frame 52 and the rear mounting frame 62 that bear their gravity, thereby avoiding the front diaphragm clamp 5 and the rear diaphragm clamp 6 from generating internal stress, thereby affecting the effect of clamping the diaphragm 2.

[0086] Reference Figure 1-Figure 2 , further, the length of the front upper pressing plate 54 is greater than the width of the diaphragm 2;

[0087] The front upper pressing plate driving members 53 are multiple and are arranged at intervals along the length direction of the front upper pressing plate 54;

[0088] The length of the rear upper pressing plate 64 is greater than the width of the diaphragm 2; the rear upper pressing plate driving members 63 are multiple and are arranged at intervals along the length direction of the rear upper pressing plate 64. This further ensures that the diaphragm 2 is subjected to uniform force at each point in the width direction, and has uniform clamping force;

[0089] Reference Figure 3 Specifically, the front diaphragm gripper driving group 7 further includes a front lifting group 73 for driving the front diaphragm gripper 5 to rise and fall relative to the lamination platform 1;

[0090] The rear diaphragm gripper driving group 8 further includes a rear lifting group 83 for driving the rear diaphragm gripper 6 to rise and fall relative to the lamination platform 1 .

[0091] The front lifting group 73 and the rear lifting group 83 are any lifting structures in the existing structures, such as a hydraulic lifting structure and a screw lifting structure.

[0092] Reference Figure 1 , Figure 6 , more specifically, a lamination plate group 14 is provided on both sides of the lamination platform 1, and the lamination plate group 14 is used to fix the diaphragm 2 on the lamination platform 1;

[0093] A cutter 91 is provided between the front gripping clamping position 11 and the diaphragm junction position 13 along the width direction of the diaphragm 2;

[0094] When the lamination pressing plate group 14 fixes the diaphragm 2 , the cutter 91 can be used to cut off the diaphragm 2 between the front gripping clamping position 11 and the diaphragm junction position 13 .

[0095] Specifically, when the front diaphragm gripper drive group 7 drives the rear diaphragm gripper 6 to complete a round of process from the front gripper clamping position 11 to the diaphragm junction position 13 and then to the front gripper clamping position 11, the diaphragm 2 is completely covered on the lamination table 1, and then the lamination pressing plate group 14 and the cutter 91 work to cut the diaphragm 2.

[0096] The lamination pressing plate group 14 can be a structure in the prior art for fixing the diaphragm 2 on the lamination table 1, with the announcement number CN219435936U and the patent name: "A lamination fixing structure of a lamination machine", which discloses a technical solution structure combining "a pressure knife assembly, a horizontal moving assembly and a vertical moving assembly", or the publication number CN114784386A, the patent name: "A lamination device and a lamination method", and the structure of the lamination pressing plate, cylinder support and pressing plate mounting plate described in paragraphs 0071 to 0072 of its specification.

[0097] The cutter 91 can be any diaphragm cutter structure in the prior art, with publication number CN117410583A, patent name: "Battery Cell Stacking Equipment", disclosed "cutting device" structure, or publication number CN117293377A, patent name: "Battery Cell Cutting and Stacking Machine" disclosed "hot wire cutting, cutting mounting plate and cutting drive assembly" structure.

[0098] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A single diaphragm unwinding and laminating machine, characterized in that: include: A diaphragm driven feeding group (4), which is arranged in front of the lamination platform (1) and is used to transport the diaphragm (2) toward the lamination platform (1); A front diaphragm gripper (5), which is arranged between the diaphragm drive feeding group (4) and the lamination table (1), and is used to clamp the diaphragm (2) transported by the diaphragm drive feeding group (4); A front diaphragm gripper driving group (7), which is fixedly connected to the front diaphragm gripper (5) and is arranged on the side of the lamination platform (1), and is used to drive the front diaphragm gripper (5) holding the diaphragm (2) to move toward the rear of the lamination platform (1) and to drive the front diaphragm gripper (5) to reset; When the front diaphragm clamp driving group (7) drives the front diaphragm clamp (5) holding the diaphragm (2) to move toward the rear of the lamination table (1), and during the process of the front diaphragm clamp (5) moving a distance from 0 to L, the speed at which the diaphragm driving feeding group (4) transmits the diaphragm (2) is greater than the moving speed of the front diaphragm clamp (5).

2. The single-diaphragm unwinding and laminating machine according to claim 1, characterized in that: It also includes a rear diaphragm gripper (6), which is arranged behind the lamination platform (1) and is used to clamp the diaphragm (2) transferred by the front diaphragm gripper (5); A rear diaphragm gripper drive group (8) is fixedly connected to the rear diaphragm gripper (6) and is arranged on the side of the stacking platform (1), and is used to drive the rear diaphragm gripper (6) to move toward the front of the stacking platform (1) and to drive the rear diaphragm gripper (6) holding the diaphragm (2) to return to the rear of the stacking platform (1).

3. The single-diaphragm unwinding and laminating machine according to claim 2, characterized in that: The front side and the rear side of the lamination platform (1) are respectively provided with a front clamping material position (11) and a rear clamping material unloading position (12); a diaphragm joint position (13) is provided above the lamination platform (1); The front diaphragm gripper driving group (7) can drive the front diaphragm gripper (5) to reciprocate between the front gripper material position (11) and the diaphragm junction position (13); The rear diaphragm gripper driving group (8) can drive the rear diaphragm gripper (6) to reciprocate between the diaphragm junction position (13) and the rear gripper unloading position (12); When the front diaphragm gripper (5) is located at the front gripper clamping position (11), it can clamp the diaphragm (2) transported by the diaphragm drive feeding group (4); When the front diaphragm gripping clamp (5) moves to the diaphragm junction position (13), the front diaphragm gripping clamp (5) releases the gripping of the diaphragm (2), and at the same time, the rear diaphragm gripping clamp (6) is located at the diaphragm junction position (13) and grips the diaphragm (2) transferred by the front diaphragm gripping clamp (5); When the rear diaphragm gripping clamp (6) moves to the rear gripping clamp lowering position (12), the rear diaphragm gripping clamp (6) releases the grip on the diaphragm (2).

4. The single-diaphragm unwinding and laminating machine according to claim 3, characterized in that: The length from the front gripping clamping position (11) to the diaphragm junction position (13) is D, and the relationship between D and L is: D>L. When the front diaphragm gripping clamp (5) moves toward the rear of the lamination table (1) for a distance greater than L and less than D, the speed at which the diaphragm driving feeding group (4) transmits the diaphragm (2) is less than the moving speed of the front diaphragm gripping clamp (5); Or, any point between the diaphragm intersection position (13) and the rear clamp material discharge position (12) is d, and the length from the front clamp material discharge position (11) to the point d is D1; ​​after the total moving length of the free end of the diaphragm (2) on the lamination table (1) reaches D1, the speed at which the diaphragm driving feeding group (4) transmits the diaphragm (2) is less than the moving speed of the rear diaphragm clamp (6).

5. The single-diaphragm unwinding and laminating machine according to any one of claims 2 to 4, characterized in that: A frame seat (3) is provided below the lamination platform (1), and a left guide path (31) and a right guide path (32) are provided on the frame seat (3) and located on the left and right sides of the lamination platform (1), respectively; The length of the front diaphragm clamp (5) is greater than the width of the diaphragm (2), and the front diaphragm clamp driving group (7) comprises a left front diaphragm clamp driving group (71) arranged on the left guide path (31) and a right front diaphragm clamp driving group (72) arranged on the right guide path (32); the left front diaphragm clamp driving group (71) is fixedly connected to the left end of the front diaphragm clamp (5), and the right front diaphragm clamp driving group (72) is fixedly connected to the right end of the front diaphragm clamp (5); The length of the rear diaphragm clamp (6) is greater than the width of the diaphragm (2), and the rear diaphragm clamp driving group (8) includes a left rear diaphragm clamp driving group (81) arranged on the left guide path (31) and a right rear diaphragm clamp driving group (82) arranged on the right guide path (32); the left rear diaphragm clamp driving group (81) is fixedly connected to the left end of the rear diaphragm clamp (6), and the right rear diaphragm clamp driving group (82) is fixedly connected to the right end of the rear diaphragm clamp (6).

6. The single-diaphragm unwinding and laminating machine according to claim 1, characterized in that: The diaphragm driven feeding group (4) comprises a left wall plate (401), a right wall plate (402) arranged opposite to the left wall plate (401), a first feeding roller (41) rotatably arranged between the left wall plate (401) and the right wall plate (402), a second feeding roller (42) rotatably arranged between the left wall plate (401) and the right wall plate (402), and a roller driving member (43); The fixed end of the roller driving member (43) is arranged on the left wall panel (401) or the right wall panel (402), and the roller driving member (43) is used to drive the first feeding roller (41) and / or the second feeding roller (42) to rotate; When the roller driving member (43) drives the first feeding roller (41) and / or the second feeding roller (42) to rotate, the diaphragm (2) is fed out from between the first feeding roller (41) and the second feeding roller (42).

7. The single-diaphragm unwinding and laminating machine according to claim 2 or 3, characterized in that: The front diaphragm gripper (5) comprises a front lower pressing plate (51), a front mounting frame (52) arranged on the front lower pressing plate (51), a front upper pressing plate driving member (53) whose fixed end is connected to the front mounting frame (52), and a front upper pressing plate (54) fixedly connected to the output end of the front upper pressing plate driving member (53); When the front upper pressure plate driving member (53) extends, it drives the front upper pressure plate (54) to move toward the front lower pressure plate (51), so that the diaphragm (2) is clamped between the front upper pressure plate (54) and the front lower pressure plate (51); when the front upper pressure plate driving member (53) retracts, it drives the front upper pressure plate (54) away from the front lower pressure plate (51), thereby releasing the clamping of the diaphragm (2); The rear diaphragm gripper (6) comprises a rear lower pressing plate (61), a rear mounting frame (62) disposed on the rear lower pressing plate (61), a rear upper pressing plate driving member (63) whose fixed end is connected to the rear mounting frame (62), and a rear upper pressing plate (64) fixedly connected to the output end of the rear upper pressing plate driving member (63); When the rear upper pressure plate driving member (63) extends, it drives the rear upper pressure plate (64) to move toward the rear lower pressure plate (61), so that the diaphragm (2) is clamped between the rear upper pressure plate (64) and the rear lower pressure plate (61); when the rear upper pressure plate driving member (63) retracts, it drives the rear upper pressure plate (64) away from the rear lower pressure plate (61), thereby releasing the clamping of the diaphragm (2).

8. The single-diaphragm unwinding and laminating machine according to claim 7, characterized in that: The length of the front upper pressing plate (54) is greater than the width of the diaphragm (2); the front upper pressing plate driving members (53) are multiple and are arranged at intervals along the length direction of the front upper pressing plate (54); The length of the rear upper pressing plate (64) is greater than the width of the diaphragm (2); the rear upper pressing plate driving components (63) are multiple and are arranged at intervals along the length direction of the rear upper pressing plate (64).

9. The single-diaphragm unwinding and laminating machine according to claim 2, characterized in that: The front diaphragm gripper driving group (7) further comprises a front lifting group (73) for driving the front diaphragm gripper (5) to lift and lower relative to the lamination platform (1); The rear diaphragm gripper driving group (8) also includes a rear lifting group (83) for driving the rear diaphragm gripper (6) to rise and fall relative to the lamination platform (1).

10. The single-diaphragm unwinding and laminating machine according to claim 3, characterized in that: A lamination pressing plate group (14) is provided on both sides of the lamination platform (1), and the lamination pressing plate group (14) is used to fix the diaphragm (2) on the lamination platform (1); A cutter (91) arranged along the width direction of the diaphragm (2) is provided between the front gripping clamping position (11) and the diaphragm junction position (13); When the laminated pressing plate group (14) fixes the diaphragm (2), the cutter (91) can be used to cut the diaphragm (2) between the front gripping clamping position (11) and the diaphragm junction position (13).

Images