Production equipment for manufacturing electrode

Abstract

The invention discloses production equipment for manufacturing an electrode. The production equipment comprises a membrane rolling and pressing mechanism, a compounding mechanism and a membrane winding and unwinding mechanism, the membrane extending and pressing mechanism, the compounding mechanism and the membrane retracting and releasing mechanism are adjacently arranged in the membrane conveying direction; the membrane rolling and pressing mechanism is used for rolling and pressing the materials into membranes; the compounding mechanism is used for compounding the diaphragm and the current collector into a finished product; the diaphragm collecting and releasing mechanism is used for collecting finished products and providing a current collector into the compounding mechanism; the membrane winding and unwinding mechanism comprises a first roller, a second roller, a position conversion set, a winding position and an unwinding position. The relative positions of the first roller and the second roller are fixed, and the two ends of the first roller and the two ends of the second roller are rotationally connected to the position conversion sets. The winding position and the unwinding position are arranged between the position conversion sets, the position conversion sets are used for driving the first roller and the second roller to synchronously position, the first roller repeatedly moves to the winding position and the unwinding position, and the second roller repeatedly moves to the winding position and the unwinding position; the winding and unwinding functions are achieved through one device, and the occupied area of production equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production and manufacturing, and in particular to a production device for manufacturing electrodes. Background Art

[0002] The production process of dry film usually includes mixing, rolling and film pressing, thinning, laminating and winding steps;

[0003] In the prior art, a diaphragm winding mechanism is generally arranged on one side of the composite mechanism, and a current collector unwinding mechanism is arranged on the other side of the composite mechanism. The diaphragm winding mechanism and the diaphragm current collector unwinding mechanism arranged in this way require two devices to occupy a large area, and each mechanism is arranged independently. Two devices need to be purchased at a time to cooperate with the composite mechanism to complete the winding and unwinding functions. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a production device for manufacturing electrodes which can reduce the manufacturing cost of membranes.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A production device for manufacturing electrodes, comprising a diaphragm rolling mechanism, a composite mechanism and a diaphragm retracting and releasing mechanism;

[0007] The diaphragm rolling mechanism, the composite mechanism and the diaphragm retracting mechanism are arranged adjacent to each other along the diaphragm transmission direction;

[0008] The membrane sheet rolling mechanism is used to roll the material into a membrane sheet; the composite mechanism is used to composite the membrane sheet and the current collector into a finished product; the membrane sheet retracting mechanism is used to collect the finished product and provide the current collector to the composite mechanism;

[0009] The film retracting and unreeling mechanism comprises a first roller, a second roller, a position conversion group, a reeling position and an unreeling position;

[0010] The first roller and the second roller are fixed relative to each other, and both ends of the first roller and the second roller are rotatably connected to the position conversion group;

[0011] The winding position and the unwinding position are arranged between the position conversion group, and the position conversion group is used to drive the first roller and the second roller to synchronize positions, so that the first roller repeatedly moves to the winding position and the unwinding position, and the second roller repeatedly moves to the winding position and the unwinding position.

[0012] The beneficial effects of the present invention are:

[0013] Compared with traditional equipment in which the diaphragm winding mechanism and the current collector unwinding mechanism are arranged separately, the present invention realizes the winding and unwinding function in one device by arranging the first roller and the second roller having both winding and unwinding functions to the diaphragm winding and unwinding mechanism, thereby reducing the floor space occupied by the production equipment and improving space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the production equipment;

[0016] Figure 2 It is one of the three-dimensional structural diagrams of some diaphragm retracting and extending mechanisms;

[0017] Figure 3 This is the second schematic diagram of the three-dimensional structure of part of the diaphragm retracting and extending mechanism;

[0018] Figure 4 It is a cross-sectional view of part of the diaphragm retracting and extending mechanism;

[0019] Figure 5 It is a structural schematic diagram of the composite mechanism, the secondary diaphragm thinning mechanism and the support frame (with shell);

[0020] Figure 6 It is a structural schematic diagram of the support frame;

[0021] Figure 7 It is a schematic diagram of the structure of a stabilizing roller, a thinning roller frame and a thinning sliding wheel;

[0022] Figure 8 is a schematic diagram of the structure of the thinning roller and the fourth scraper;

[0023] Fig. 9 It is a schematic diagram of the structure of the integrated roller, the first scraper, the thinning sliding wheel and the integrated bracket;

[0024] Fig.10 It is a schematic diagram of the composite roller, the second scraper, the thinning sliding wheel and the composite bracket structure;

[0025] Fig.11 is a schematic diagram of the structure of the support frame, the first pipeline and the second pipeline (without the shell);

[0026] Fig.12 It is a schematic diagram of the structure of the detection framework (without the shell). DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. 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 invention can be combined interchangeably without conflicting with each other.

[0028] Reference Figure 1 , a production equipment for manufacturing electrodes, comprising a membrane rolling mechanism 1, a composite mechanism 2 and a membrane retracting mechanism 3; the membrane rolling mechanism 1, the composite mechanism 2 and the membrane retracting mechanism 3 are arranged adjacent to each other along the membrane transmission direction; the membrane rolling mechanism 1 is used to roll the material into a membrane; the composite mechanism 2 is used to composite the membrane and the current collector into a finished product; the membrane retracting mechanism is used to collect the finished product and provide the current collector to the composite mechanism 2;

[0029] Reference Figure 2 The diaphragm retracting and unwinding mechanism 3 includes a first roller 31, a second roller 32, a position conversion group 33, a reeling position 34 and an unreeling position 35 arranged on the diaphragm retracting and unwinding mechanism 3; the first roller 31 and the second roller 32 are fixed in relative position, and both ends of the first roller 31 and the second roller 32 are rotatably connected to the position conversion group 33; the reeling position 34 and the unreeling position 35 are arranged between the position conversion group 33, and the position conversion group 33 is used to drive the first roller 31 and the second roller 32 to rotate synchronously, so that the first roller 31 repeatedly moves to the reeling position 34 and the unreeling position 35, and the second roller 32 repeatedly moves to the reeling position 34 and the unreeling position 35, thereby ensuring the continuity of the production process and reducing the production interruption caused by equipment switching. The positions of the first roller 31 and the second roller 32 are accurately controlled to ensure the accurate compounding of the diaphragm and the current collector, thereby improving the product qualification rate.

[0030] Compared with the traditional equipment, in which the diaphragm winding mechanism and the collector unwinding mechanism are arranged separately, the present invention arranges the first roller 31 and the second roller 32 which have both the winding and unwinding functions to the diaphragm winding and unwinding mechanism 3, and the functions of the first roller 31 and the second roller 32 are interchangeable. The design of the diaphragm winding and unwinding mechanism allows the winding and unwinding functions to be flexibly adjusted according to production needs without replacing the equipment; the equipment structure is simplified, the complexity of the production process is reduced, and the flexibility and adaptability of the equipment are improved.

[0031] One device realizes the winding and unwinding function, thereby reducing the floor space of the production equipment and improving space utilization; since only one set of equipment is needed to complete the winding and unwinding function, the production cost can be significantly reduced compared to purchasing two independent devices. In addition, in the traditional equipment, at least two operators are required to supervise the membrane winding mechanism and the current collector unwinding mechanism respectively, and to take and unwind the membrane winding mechanism and the current collector roll installed on the current collector unwinding mechanism, while the equipment of this embodiment only requires one operator.

[0032] Specifically, the membrane referred to in this embodiment is a conductive layer containing a conductive material, including a positive electrode layer and a negative electrode layer of an electrode.

[0033] Reference Figure 4 In one embodiment, the position conversion group 33 includes a front frame 331, a rear frame 332, a front rotating platform 333, and a rear rotating platform 334; the front frame 331 and the rear frame 332 are adjacently arranged on both sides of the film transmission direction; the front rotating platform 333 is arranged on the front frame 331; the rear rotating platform 334 is arranged on the rear frame 332, and the rear rotating platform 334 is coaxially arranged with the rotating axis of the front rotating platform 333;

[0034] The first roller 31 and the second roller 32 are both rotatably connected to the front rotating table 333 at one end and rotatably connected to the rear rotating table 334 at the other end; the positions of the first roller 31 and the second roller 32 relative to the composite mechanism 2 can be adjusted by rotating the front rotating table 333 and the rear rotating table 334.

[0035] In one embodiment, the first roller 31 is used to provide the current collector sheet to the composite mechanism 2, and the composite mechanism 2 is used to composite the membrane sheet with the current collector sheet into an A-side membrane sheet, and at this time the second roller 32 is used to receive the A-side membrane sheet; when the first roller 31 is used to provide the A-side membrane sheet to the composite mechanism 2, the composite mechanism 2 is used to composite the membrane sheet with the A-side membrane sheet into an AB-side membrane sheet; at this time the second roller 32 is used to receive the AB-side membrane sheet.

[0036] The working process of the diaphragm retracting and releasing mechanism 3 is as follows:

[0037] When the first roller 31 is located at the unwinding position 35 and the second roller 32 is located at the winding position 34, the first roller 31 provides the current collector sheet to the composite mechanism 2. After the membrane sheet and the current collector sheet are bonded, they enter the composite mechanism 2 together, are compacted to form an A-side membrane sheet, and enter the second roller 32 in a material-free state. The second roller 32 winds up the A-side membrane sheet. When the first roller 31 is emptied and the second roller 32 is fully wound, the A-side composite is completed.

[0038] Subsequently, the front rotating table 333 and the rear frame 332 rotate synchronously until the second roller 32 is located at the unwinding position 35 and the first roller 31 is located at the winding position 34; subsequently, the second roller 32 provides the A-side film sheet to the composite mechanism 2, and after the film sheet and the A-side film sheet are bonded, they enter the composite mechanism 2 together, and after being compacted, form the AB-side film sheet, and enter the first roller 31 in the material-free state. The first roller 31 completes winding the AB-side film sheet, and the second roller 32 is emptied. When the first roller 31 is fully rolled, the AB-side composite is completed.

[0039] During this process, the diaphragm rolling mechanism 1 can operate uninterruptedly without being affected by the reeling and unreeling of the diaphragm reeling and unreeling mechanism 3, thereby avoiding shutdown of the diaphragm rolling mechanism 1, which causes the diaphragm to hover between the diaphragm rolling mechanism 1 and the composite mechanism 2, increasing the risk of belt breakage.

[0040] Specifically, the position conversion group 33 includes a front central shaft 511, a rear central shaft 521, a front first driven wheel 512, a front second driven wheel 513, a rear first driven wheel 522, a rear second driven wheel 523, a first roller driving member 516, a second roller driving member 526, a first roller driven wheel 515, a second roller driven wheel 525, a left first transmission chain (not shown in the figure), a left second transmission chain (not shown in the figure), a front driving wheel 514, a rear driving wheel 524, a rear first transmission chain (not shown in the figure) and a rear second transmission chain (not shown in the figure);

[0041] The front central axis 511 is arranged on the center of the front rotating platform 333 and is located on the side facing away from the rear rotating platform 334; the rear central axis 521 is arranged on the center of the rear rotating platform 334 and is located on the side facing away from the front rotating platform 333; the front first driven wheel 512 and the front second driven wheel 513 are rotatably arranged on the front central axis 511, and the relative positions of the front first driven wheel 512 and the front second driven wheel 513 are fixed; the rear first driven wheel 522 and the rear second driven wheel 523 are rotatably arranged on the rear central axis 521, and the relative positions of the rear first driven wheel 522 and the rear second driven wheel 523 are fixed;

[0042] The first roller driven wheel 515 is connected to one end of the first roller 31, and the first roller driven wheel 515, the front first driven wheel 512, and the front second driven wheel 513 are all located on the side of the same surface of the front rotating platform 333; the left first transmission chain is meshed with the first roller driven wheel 515 and the front first driven wheel 512; the first roller driving member 516 is provided on the front frame 331, and the first roller driving member 516 is provided with the front driving wheel 514, and the left second transmission chain is meshed with the front driving wheel 514 and the front second driven wheel 513;

[0043] The second roller driven wheel 525 is connected to one end of the second roller 32, and the second roller driven wheel 525, the rear first driven wheel 522, and the rear second driven wheel 523 are all located on the side of the same surface of the rear rotating table 334; the rear first transmission chain is meshed with the second roller driven wheel 525 and the rear first driven wheel 522; the second roller driving member 526 is arranged on the rear frame 332, and the rear driving wheel 524 is provided on the second roller driving member 526, and the rear second transmission chain is meshed with the rear driving wheel 524 and the rear second driven wheel 523.

[0044] In this embodiment, a control circuit board and a winding thickness sensor may be provided on the rear frame 332 or the front rotating table 333. The arrangement of the electronic device requires reasonable planning of the circuit to avoid the disorderly arrangement of the wires on the device and the influence on the normal operation of the diaphragm retracting and releasing mechanism 3. Taking the driving of the first roller 31 to rotate as an example, if the front driving wheel 514 is used to directly drive the first roller driven wheel 515 for transmission, the front driving wheel 514 and the first roller driven wheel 515 need to be located on the same plane. As the front rotating table 333 rotates, the wires on its inner surface are easily entangled with the front driving wheel 514, which not only affects the rotation of the front rotating table 333, but also causes the front driving wheel 514 to be unable to mesh with the first roller driven wheel 515. In this embodiment, since the front first driven wheel 512 and the front second driven wheel 513 are both located on the front central axis 511, the front driving wheel 514 and the first roller driven wheel 515 are located on two planes, which can avoid the wires on the inner surface of the front rotating table 333 from being entangled with the front driving wheel 514.

[0045] Reference Figure 1 , Figure 5 In one embodiment, it further comprises a secondary diaphragm thinning mechanism 4 and a support frame 6; the secondary diaphragm thinning mechanism 4 is arranged between the diaphragm rolling mechanism 1 and the composite mechanism 2; the secondary diaphragm thinning mechanism 4 and the composite mechanism 2 are both arranged on the support frame 6;

[0046] The membrane includes a membrane rolled by the membrane rolling mechanism 1 and a membrane rolled by the secondary membrane thinning mechanism 4. The composite mechanism 2 is used to composite the membrane and the current collector into a finished product.

[0047] The diaphragm flows out from the diaphragm rolling mechanism 1, enters the secondary diaphragm thinning mechanism 4 from the left side of the support frame 6, forms a diaphragm after secondary thinning, and enters the composite mechanism 2 to be composited with the collector; therefore, the secondary diaphragm thinning mechanism 4 and the composite mechanism 2 are arranged on the same support frame, further reducing the number of racks set up and simplifying the number of racks of the electrode production equipment in this embodiment.

[0048] Reference Figure 5 , Figure 7 , Fig. 9 , Fig.10 Specifically, a thinning sliding wheel 401 is provided at the bottom of the secondary diaphragm thinning mechanism 4, and a composite sliding wheel 201 is provided at the bottom of the composite mechanism 2;

[0049] Reference Figure 6 The support frame 6 is provided with a first slide rail 611 corresponding to the thinning sliding wheel 401 and a second slide rail 612 corresponding to the composite sliding wheel 201, and the length directions of the first slide rail 611 and the second slide rail 612 are perpendicular to the transmission direction of the film. Through the mutual cooperation between the composite sliding wheel 201 and the second slide rail 612, and the mutual cooperation between the thinning sliding wheel 401 and the first slide rail 611, the secondary film thinning mechanism 4 and the composite mechanism 2 can be quickly removed from the support frame 6 for easy maintenance.

[0050] When the production equipment is working, it will vibrate. In order to avoid the position deviation of the secondary diaphragm thinning mechanism 4 and the composite mechanism 2 relative to the support frame 6 and to avoid affecting the secondary thinning and the composite quality of the diaphragm and the current collector, specifically, the support frame 6 is also provided with a limit block for limiting the sliding of the secondary diaphragm thinning mechanism 4 and the composite mechanism 2; one end of the limit block is connected to the support frame 6, and the other end of the limit block protrudes from the support frame 6 and can be offset against the composite mechanism 2 and the secondary diaphragm thinning mechanism 4. The setting of the limit block can not only assist the position of the secondary diaphragm thinning mechanism 4 and the composite mechanism 2 relative to the support frame 6, but also prevent the secondary diaphragm thinning mechanism 4 and the composite mechanism 2 from accidentally falling from the support frame 6.

[0051] More specifically, there are multiple sets of first slide rails 611 and second slide rails 612, and the first slide rails 611 and the second slide rails 612 are parallel to each other; there are multiple composite sliding wheels 201 and multiple thinning sliding wheels 401.

[0052] Reference Figure 6 , Fig.10 Specifically, the limit block includes a thinning limit block 631 and a composite limit block 632. The thinning limit block 631 includes at least two blocks and is arranged on the front and rear sides of the secondary diaphragm thinning mechanism 4; similarly, the composite limit block 632 includes at least two blocks and is arranged on the front and rear sides of the composite mechanism 2.

[0053] One end of the thinning limit block 631 can be fixed on the support frame 6 by at least two screws. When the secondary diaphragm thinning mechanism 4 needs to be pulled out, one screw is unscrewed and the other screw around the thinning limit block 631 is rotated to make way for the secondary diaphragm thinning mechanism 4 to be pulled out. The composite limit block 632 can also be fixed to the support frame 6 by the same means.

[0054] Reference Figure 5-Figure 11 Specifically, the secondary film thinning mechanism 4 includes a thinning roller group 41 and an integrated roller 42, and the composite mechanism 2 includes the integrated roller 42 and a composite roller 22;

[0055] Along the film transmission direction, the thinning roller group 41, the integrated roller 42 and the composite roller 22 are arranged adjacent to each other;

[0056] The membrane is adhered to the outer surface of the thinning roller group 41 and transferred between the thinning roller group 41 and the integrated roller 42 for secondary thinning to form a membrane. Through the secondary thinning process, a thinner membrane can be produced, thereby increasing the proportion of active materials in a limited space and improving the energy density of the battery.

[0057] The membrane is attached to the outer surface of the integrated roller 42, transferred between the integrated roller 42 and the composite roller 22, and composited with the current collector to form a finished product. Since the membrane after secondary thinning is more easily deformed, the membrane is attached to the outer surface of the integrated roller 42 for transmission, which can help maintain the consistency and uniformity of the membrane, ensure the flatness of the membrane before entering the composite mechanism 2, and reduce the wrinkles of the composite membrane.

[0058] Reference Figure 6-Figure 10 More specifically, the support frame 6 is detachably provided with a thinning roller frame 618, a composite bracket 62, an integrated bracket 63, a left cylinder 64 and a right cylinder 65; the thinning roller group 41 includes a stabilizing roller 411 and a thinning roller 412 arranged side by side; the stabilizing roller 411 is rotatably arranged on the thinning roller frame 618; the integrated rollers 42 are all rotatably arranged on the integrated bracket 63; the composite roller 22 is rotatably arranged on the composite bracket 62; the thinning roller frame 618, the composite bracket 62 and the integrated bracket 63 are arranged side by side;

[0059] The fixed end of the left cylinder 64 is arranged on the support frame 6, and the output end of the left cylinder 64 is arranged toward the composite support 62, and the output end of the left cylinder 64 is connected to the thinning roller frame 618; the fixed end of the right cylinder 65 is arranged on the support frame 6, and the output end of the right cylinder 65 is arranged toward the thinning roller frame 618, and the output end of the right cylinder 65 is connected to the composite support 62; the output ends of the left cylinder 64 and the right cylinder 65 extend out to synchronously adjust the gap between the thinning roller 412 and the integrated roller 42, and adjust the gap between the integrated roller 42 and the composite roller 22, thereby reducing the complexity of the device.

[0060] More specifically, in order to reduce the adhesion of the mixed material to each roller, the support frame 6 is provided with a first scraper 66, a second scraper 67, a third scraper (not shown in the figure) and a fourth scraper 69. The first scraper 66 is arranged on one side of the integrated roller 42 to scrape off the electrode film material on the integrated roller 42; the second scraper 67 is arranged on one side of the composite roller 22 to scrape off the electrode film material on the composite roller 22; the third scraper is arranged on one side of the stabilizing roller 411 to scrape off the electrode film material on the surface of the stabilizing roller 411; the fourth scraper 69 is arranged on one side of the thinning roller 412 to scrape off the electrode film material on the surface of the thinning roller 412.

[0061] Reference Fig.11 More specifically, the first scraper 66 and the second scraper 67 will also scrape off the dust during the operation. In order to allow the dust removal mechanism to absorb the dust, a first pipeline 601 and a second pipeline 602 are provided. One end of the first pipeline 601 is connected to the machine cavity 61 or the dust removal mechanism, and the other end is provided at one side of the first scraper 66. The dust scraped off by the first scraper 66 is sucked away by the dust removal mechanism via the first pipeline 601; one end of the second pipeline 602 is connected to the machine cavity 61 or the dust removal mechanism, and the other end is provided at one side of the second scraper 67. The dust scraped off by the second scraper 67 is sucked away by the dust removal mechanism via the first pipeline 601.

[0062] More specifically, a film outlet conveyor path is provided on the top of the support frame 6, and the film sheet flowing out through the composite mechanism 2 flows out along the film outlet conveyor path. The second scraper 67 is provided at the bottom of the film outlet conveyor path, and one end of the second pipeline 602 is provided between the second scraper 67 and the film outlet conveyor path to more accurately absorb dust.

[0063] Reference Figure 6 , more specifically, the support frame 6 also includes a primary trimming group 605 and a secondary trimming group 606; under the same manufacturing material premise, the connection strength of the thick diaphragm is greater than that of the thin diaphragm, and the thick diaphragm is carried in the gap position of each mechanism before being combined with the current collector, which can avoid the diaphragm from breaking in each mechanism. However, after the diaphragm is rolled, the diaphragm width may be greater than the width of the secondary diaphragm thinning mechanism 4, resulting in a lack of support for the diaphragm edge and the diaphragm is easy to break; therefore, the primary trimming group 605 is set, and the primary trimming group 605 is used to cut off the two side edges of the diaphragm so that the diaphragm forms a flat diaphragm edge, so that the width of the diaphragm after rolling is smaller than the width of the secondary diaphragm thinning mechanism 4; the secondary trimming group 606 is used to cut the diaphragm so that the diaphragm forms a flat diaphragm edge, which can avoid the diaphragm from cracking;

[0064] The secondary trimming group 606 is used to trim the two sides of the membrane to avoid uneven edges of the membrane and to prevent the edges of the membrane from exceeding the edges of the current collector. When the battery is manufactured, the two membranes are in direct contact, resulting in a short circuit in the battery.

[0065] It also includes a first tensioning mechanism 603 and a tension sensor 604. The first tensioning mechanism 603 is arranged between the first trimming group 605 and the secondary diaphragm thinning mechanism 4, and is used to tension the diaphragm cut by the first trimming group 605. The tension sensor 604 is used to detect the tension of the diaphragm after trimming by the first trimming group 605. The operator can adjust the tension of the diaphragm by the first tensioning mechanism 603 according to the value fed back by the tension sensor 604, and can also achieve this function by setting a program.

[0066] Reference Fig.12 Specifically, the diaphragm retracting and releasing mechanism 3 also includes a detection frame 36; along the diaphragm transmission direction, the detection frame 36 is located between the front frame 331, the rear frame 332 and the composite mechanism 2, and a thickness detection group 361 is provided on the detection frame 36; the thickness detection group 361 is used to detect the thickness of the A-side diaphragm or the AB-side diaphragm, and can monitor the product thickness in real time and adjust the production parameters in time to ensure that the thickness of the produced electrodes meets the production standards, thereby improving the quality of the final product.

[0067] Reference Figure 2 , Figure 3 Specifically, a deflection correction sensor 362 and a process deflection correction device 363 are provided between the front frame 331 and the rear frame 332. The deflection correction sensor 362 and the process deflection correction device 363 are sequentially arranged along the transmission direction of the film. The deflection correction sensor 362 is connected to the deflection correction device 363 by signal. The deflection correction sensor 362 is used to detect whether the A-side film or the B-side film transmitted toward the winding position 34 is offset. If the A-side film or the B-side film is detected to be offset, the deflection correction device 363 corrects the deflection of the A-side film or the B-side film. The coordinated work of the deflection correction sensor 362 and the deflection correction device 363 can ensure that the film maintains the correct alignment state during the transmission process, reduce the material waste caused by alignment errors, improve the material utilization rate, and reduce the quality problems caused by offset.

[0068] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A production equipment for manufacturing electrodes, characterized in that: It comprises a diaphragm rolling mechanism (1), a compound mechanism (2) and a diaphragm retracting and releasing mechanism (3); The diaphragm rolling mechanism (1), the composite mechanism (2) and the diaphragm retracting mechanism (3) are arranged adjacent to each other along the diaphragm transmission direction; The membrane sheet rolling mechanism (1) is used to roll materials into membrane sheets; the composite mechanism (2) is used to composite the membrane sheet and the current collector into a finished product; the membrane sheet retracting mechanism is used to collect the finished product and provide the current collector to the composite mechanism (2); The film retracting and unwinding mechanism (3) comprises a first roller (31), a second roller (32), a position conversion group (33), a reeling position (34) and an unreeling position (35) arranged on the film retracting and unwinding mechanism (3); The first roller (31) and the second roller (32) are fixed in relative position, and both ends of the first roller (31) and the second roller (32) are rotatably connected to the position conversion group (33); The winding position (34) and the unwinding position (35) are arranged between the position conversion group (33), and the position conversion group (33) is used to drive the first roller (31) and the second roller (32) to rotate synchronously, so that the first roller (31) repeatedly moves to the winding position (34) and the unwinding position (35), and the second roller (32) repeatedly moves to the winding position (34) and the unwinding position (35).

2. The production equipment according to claim 1, characterized in that: The position conversion group (33) comprises a front frame (331), a rear frame (332), a front rotating platform (333), and a rear rotating platform (334); The front frame (331) and the rear frame (332) are adjacently arranged on both sides of the diaphragm transmission direction; The front rotating platform (333) is arranged on the front frame (331); the rear rotating platform (334) is arranged on the rear frame (332), and the rotating axes of the rear rotating platform (334) and the front rotating platform (333) are coaxially arranged; The first roller (31) and the second roller (32) are both rotatably connected to the front rotating platform (333) at one end and rotatably connected to the rear rotating platform (334) at the other end; By rotating the front rotating platform (333) and the rear rotating platform (334), the positions of the first roller (31) and the second roller (32) relative to the composite mechanism (2) can be adjusted.

3. The production equipment according to claim 1, characterized in that: The first roller (31) is used to provide the current collector sheet to the composite mechanism (2), and the composite mechanism (2) is used to composite the membrane sheet and the current collector sheet into an A-surface membrane sheet, and the second roller (32) is used to receive the A-surface membrane sheet; When the first roller (31) is used to provide the A-side film sheet to the compounding mechanism (2), the compounding mechanism (2) is used to compound the film sheet with the A-side film sheet into an AB-side film sheet; at this time, the second roller (32) is used to receive the AB-side film sheet.

4. The production equipment according to claim 2, characterized in that: The position conversion group (33) comprises a front central shaft (511), a rear central shaft (521), a front first driven wheel (512), a front second driven wheel (513), a rear first driven wheel (522), a rear second driven wheel (523), a first roller driving member (516), a second roller driving member (526), ​​a first roller driven wheel (515), a second roller driven wheel (525), a left first transmission chain, a left second transmission chain, a front driving wheel (514), a rear driving wheel (524), a rear first transmission chain, and a rear second transmission chain; The front central axis (511) is arranged at the center of the front rotating platform (333) and is located on a side facing away from the rear rotating platform (334); The rear central axis (521) is arranged on the center of the circle of the rear rotating platform (334) and is located on the side facing away from the front rotating platform (333); The front first driven wheel (512) and the front second driven wheel (513) are rotatably arranged on the front central shaft (511), and the relative positions of the front first driven wheel (512) and the front second driven wheel (513) are fixed; The first rear driven wheel (522) and the second rear driven wheel (523) are rotatably disposed on the rear central shaft (521), and the relative positions of the first rear driven wheel (522) and the second rear driven wheel (523) are fixed; The first roller driven wheel (515) is connected to one end of the first roller (31); the first roller driven wheel (515), the front first driven wheel (512), and the front second driven wheel (513) are all located on the side of the same surface of the front rotating platform (333); The left first transmission chain is meshed with the first roller driven wheel (515) and the front first driven wheel (512); The first roller driving member (516) is arranged on the front frame (331), and the front driving wheel (514) is arranged on the first roller driving member (516), and the left second transmission chain is meshed with the front driving wheel (514) and the front second driven wheel (513); The second roller driven wheel (525) is connected to one end of the second roller (32); the second roller driven wheel (525), the rear first driven wheel (522), and the rear second driven wheel (523) are all located on the side of the same surface of the rear rotating platform (334); The rear first transmission chain is meshed with the second roller driven wheel (525) and the rear first driven wheel (522); The second roller driving member (526) is arranged on the rear frame (332), and the rear driving wheel (524) is arranged on the second roller driving member (526), ​​and the rear second transmission chain is meshed with the rear driving wheel (524) and the rear second driven wheel (523).

5. The production equipment according to claim 1, characterized in that: It also includes a secondary diaphragm thinning mechanism (4) and a support frame (6); The secondary diaphragm thinning mechanism (4) is arranged between the diaphragm rolling mechanism (1) and the composite mechanism (2); the secondary diaphragm thinning mechanism (4) and the composite mechanism (2) are both arranged on the support frame (6); The membrane comprises a membrane formed by membrane rolling means (1) and a membrane formed by secondary membrane thinning means (4), and the composite means (2) is used to composite the membrane with a current collector into a finished product.

6. The production equipment according to claim 5, characterized in that: The bottom of the secondary diaphragm thinning mechanism (4) is provided with a thinning sliding wheel (401), and the bottom of the composite mechanism (2) is provided with a composite sliding wheel (21); The support frame (6) is provided with a first slide rail (61) corresponding to the thinning slide wheel (401) and a second slide rail (62) corresponding to the composite slide wheel (21), and the length directions of the first slide rail (61) and the second slide rail (62) are both perpendicular to the transmission direction of the diaphragm.

7. The production equipment according to claim 6, characterized in that: The support frame (6) is also provided with a limit block for limiting the sliding of the secondary diaphragm thinning mechanism (4) and the composite mechanism (2); one end of the limit block is connected to the support frame (6), and the other end of the limit block protrudes from the support frame (6) and can abut against the composite mechanism (2) and the secondary diaphragm thinning mechanism (4).

8. The production equipment according to claim 6, characterized in that: The secondary film thinning mechanism (4) comprises a thinning roller group (41) and an integrated roller (42), and the composite mechanism (2) comprises the integrated roller (42) and a composite roller (22); Along the film transmission direction, the thinning roller group (41), the integrated roller (42) and the composite roller (22) are arranged adjacent to each other; The film is attached to the outer surface of the thinning roller group (41), and is transferred between the thinning roller group (41) and the integration roller (42) to undergo secondary thinning to form a film; The membrane is attached to the outer surface of the integrated roller (42), transferred between the integrated roller (42) and the composite roller (22), and composited with the current collector to form a finished product.

9. The production equipment according to claim 2, characterized in that: The diaphragm retracting and releasing mechanism (3) further comprises a detection frame (36); along the diaphragm transmission direction, the detection frame (36) is located between the front frame (331), the rear frame (332) and the composite mechanism (2); a thickness detection group (361) is provided on the detection frame (36); the thickness detection group (361) is used to detect the thickness of the A-side diaphragm or the AB-side diaphragm.

10. The production equipment according to claim 2, characterized in that: A deflection correction sensor (362) and a process deflection correction device (363) are provided between the front frame (331) and the rear frame (332). The deflection correction sensor (362) and the process deflection correction device (363) are arranged in sequence along the transmission direction of the membrane sheet. The deflection correction sensor (362) is connected to the deflection correction device (363) by signal. The deflection correction sensor (362) is used to detect whether the A-side membrane sheet or the B-side membrane sheet transmitted toward the winding position (34) is offset. If it is detected that the A-side membrane sheet or the B-side membrane sheet is offset, the deflection correction device (363) corrects the deflection of the A-side membrane sheet or the B-side membrane sheet.

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