Pole piece unwinding device and lamination stacking machine
By adjusting the tension control in sections in the pole piece unwinding device, the problem of pole piece belt jitter is solved, higher belt walking stability and cutting accuracy are achieved, and faster pole piece belt walking speed is adapted.
Patent Information
- Application Number
- CN202422826578.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing electrode unwinding and cutting system, when the electrode belt path is long, the tension fluctuates greatly, resulting in obvious jitter, which affects the electrode belt speed and cutting accuracy.
By setting a partition component on the pole piece belt path, the pole piece belt path is divided into the first and second tension control sections, and the tension of each section is adjusted and controlled separately. Tension control components such as tension swing rollers and swing drive parts are used to improve the response speed and accuracy of tension control.
It effectively reduces the jitter of the pole piece belt path, improves the response speed and accuracy of the tension control, adapts to the faster pole piece belt speed, and improves the cutting quality and speed.
Smart Images
Figure CN223444842U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pole piece production equipment, and particularly relates to a pole piece unwinding device and a laminating machine. Background Art
[0002] During the production process of electrodes, they usually need to be cut into predetermined sizes and shapes according to battery design requirements. The accuracy and quality of electrode cutting will directly affect the performance and quality of the battery.
[0003] The cutting process of the electrode is mainly carried out by the electrode unwinding and cutting system. The existing electrode unwinding and cutting system includes an unwinding mechanism and a cutting mechanism. The unwinding mechanism unwinds the electrode, and the electrode is cut into a specific size by the cutting mechanism after unwinding. Among them, the unwinding mechanism includes a roller, and the unwound electrode passes around the roller for conveying.
[0004] However, when the pole piece belt is long, the weight of the pole piece belt is large, and the tension at different positions of the belt is different, especially at the faster belt speed, the movement of the belt changes greatly, which can easily lead to large fluctuations in the overall tension of the belt and obvious jitter, thereby affecting the belt speed of the pole piece in the unwinding and cutting system. Utility Model Content
[0005] In order to solve the shortcomings of the existing technology, the utility model provides a pole piece unwinding device and a laminating machine. By adjusting and controlling the tension of the pole piece belt in sections through the tension control component, the problem of belt jitter can be effectively improved, the control response speed and tension control accuracy of the tension control component can be improved, and it can adapt to faster pole piece belt speeds.
[0006] The technical effects to be achieved by the present invention are achieved through the following technical aspects:
[0007] In the first aspect, the utility model provides a pole piece unwinding device, including a partition component, which is located on the pole piece's tape path, and the pole piece's tape path is divided by the partition component to form a first tension control section and a second tension control section; and a tension control component, which is respectively arranged in the first tension control section and the second tension control section, and adjusts the pole piece tension in the first tension control section and the second tension control section in sections.
[0008] In some implementations, the pole piece unwinding device further includes a material roll assembly, and the first tension control section is located between the material roll assembly and the partition assembly; the second tension control section is used to connect to the cutting mechanism, and the second tension control section is located between the partition assembly and the cutting mechanism.
[0009] In some implementations, the tension control assembly includes a tension swing roller, and one side of the tension swing roller is provided with a swing driving element for driving the tension swing roller to swing to adjust the tension of the pole piece.
[0010] In some implementations, the swing driving element includes a swing cylinder drivingly connected with the tension swing roller.
[0011] In some implementations, the swing driving element is a DD motor drivingly connected with the tension swing roller.
[0012] In some implementations, the tension control assembly further includes a fixed seat, a rotating shaft is rotatably arranged on the fixed seat, a swing arm is sleeved on the rotating shaft, the tension swing roller is connected with the swing arm, and the swing driving element drives the rotating shaft and the swing arm to swing relative to the fixed seat.
[0013] In some implementations, the swing driving element includes a swing cylinder drivingly connected with the tension swing roller, and the swing arm is provided with a push rod pushed by a driving end of the swing cylinder.
[0014] In some implementations, the fixed seat is provided with a potentiometer for detecting the swing position of the tension swing roller, and the potentiometer is connected with the rotating shaft.
[0015] In some implementations, the partition assembly includes a partition roller for forming a tension partition of the pole piece, and the first tension control section and the second tension control section are respectively located on two sides of the partition roller along the running path of the pole piece.
[0016] The partition roller is drivingly connected with a partition driving element for driving the partition roller to move to adjust the tension of the pole piece on the partition roller.
[0017] In the second aspect, the utility model provides a lamination machine, including above-mentioned pole piece unwinding device.
[0018] In summary, the utility model has at least the following advantages:
[0019] 1. The pole piece unwinding device provided by the utility model, on the pole piece running path, the pole piece is conveyed through the partition assembly, the partition assembly forms tension partition of the pole piece belt path, and the pole piece belt path is separated to form a first tension control section and a second tension control section, wherein the tension control assembly adjusts and controls the pole piece tension in the first tension control section and the second tension control section respectively. The tension control assembly adjusts and controls the tension by section, so that the pole piece belt path controlled by a single tension control assembly is shortened, the tension control assembly controls the tension at different positions of the pole piece belt path respectively, which is beneficial to reduce the fluctuation of the pole piece belt path, the response speed and control accuracy of the tension control assembly are improved, the stability of the pole piece belt path in the running process is improved, and higher pole piece running speed can be adapted.
[0020] 2. The lamination machine provided by the utility model improves the running stability of the pole piece belt path, can adapt to faster pole piece unwinding speed, reduces the shaking degree of the pole piece belt path, and is beneficial to improve the cutting quality and cutting speed of the pole piece. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a front view of a pole piece unwinding device of an embodiment of the utility model.
[0022] Figure 2 It is a schematic diagram of the overall structure of a pole piece unwinding device of an embodiment of the utility model.
[0023] Figure 3 It is a front view of a tension control assembly of embodiment 2 of the utility model.
[0024] Figure 4 It is a schematic diagram of the local structure of a partition assembly of an embodiment of the utility model.
[0025] Markings in the drawing:
[0026] 1. Partition assembly; 11, partition roller; 12, first tension control section; 13, second tension control section; 14, partition driving member; 141, bearing frame; 15, guide roller; 16, passing roller;
[0027] 2. Tension control assembly; 21, tension swing roller; 22, swing driving member; 221, swing cylinder; 222, push rod; 23, fixed seat; 24, rotating shaft; 25, swing arm; 26, potentiometer;
[0028] 3. Material roll assembly;
[0029] 4. Pole piece. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all the embodiments.
[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0032] Embodiment 1:
[0033] Please refer to the drawings Figure 1 The present application discloses an electrode plate unwinding device, which comprises a partition assembly 1 and a tension control assembly 2 arranged along the running path of the electrode plate 4. The tension control assembly 2 adjusts and controls the tension of the electrode plate in sections, which is beneficial to improve the stability of the electrode plate 4 during running and can be applied to various film material conveying equipment, such as the unwinding and cutting system of the electrode plate.
[0034] The partition assembly 1 is arranged on the running path of the electrode plate 4, and the partition assembly 1 forms a tension partition while conveying the electrode plate 4. The running path of the electrode plate 4 is divided into a first tension control section 12 and a second tension control section 13 by the partition assembly 1. Specifically, the first tension control section 12 can be located upstream of the running path of the electrode plate 4, and the second tension control section 13 can be located downstream of the running path of the electrode plate 4. In the preferred embodiment, the partition assembly 1 can be provided with several groups, and the several partition assemblies 1 are arranged along the running path of the electrode plate 4 at intervals. The longer electrode plate running path can be divided into multiple groups of first tension control sections 12 and second tension control sections 13, which is beneficial to the tension adjustment and control of the electrode plate running path and reduces the fluctuation of the electrode plate running path.
[0035] The tension control assembly 2 is arranged in the first tension control section 12 and the second tension control section 13, respectively, to adjust the tension of the electrode plate 4 in the first tension control section 12 and the second tension control section 13 in sections. In the preferred embodiment, the electrode plate unwinding device further comprises a material roll assembly 3. As shown in some specific embodiments, the material roll assembly 3 comprises an unwinding roller, and the material roll is arranged on the unwinding roller to unwind the electrode plate 4. The first tension control section 12 is located between the partition assembly 1 and the material roll assembly 3, and the downstream of the electrode plate unwinding device is connected with a cutting mechanism. The second tension control section 13 is located between the partition assembly 1 and the cutting mechanism.
[0036] The pole piece 4 is unwound through the material roll assembly 3, and then the tension is cut off at the partition assembly 1, and then the pole piece 4 is conveyed to the cutting mechanism through the partition assembly 1, the pole piece strip from the material roll assembly 3 to the cutting mechanism is segmented and tension-adjusted and controlled by the partition assembly 1, and the single tension control assembly 2 controls the pole piece strip to be shortened.
[0037] As shown in some specific embodiments, the pole piece strip is pulled by the cutter of the cutting mechanism, the walking speed of the pole piece 4 in the first tension control section 12 is generally slow, the walking speed of the pole piece 4 in the second tension control section 13 is fast, at this time, the tension at different positions in the pole piece strip walking path is different, the action of the pole piece strip in the second tension control section 13 changes greatly, the tension fluctuation is also large, and the pole piece strip shakes obviously. The tension control assembly 2 controls the tension in sections, can control the pole piece strip with small fluctuation in the first tension control section 12 and the pole piece strip with large fluctuation in the second tension control section 13 separately, is conducive to improving the response speed and control accuracy of the tension adjustment of the tension control assembly 2 in the second tension control section 13, the tension fluctuation of the whole pole piece strip can be kept within ±3%, the control accuracy can be kept within ±0.15mm, and the shaking amplitude of the pole piece strip is reduced.
[0038] Embodiment 2:
[0039] The difference between this embodiment and embodiment 1 is that the partition assembly 1 and the tension control assembly 2 of the utility model are further optimized in this embodiment.
[0040] Please refer to Figure 2 and Figure 3 , the tension control assembly 2 of this embodiment comprises a tension swing roller 21, specifically, the tension swing roller 21 is horizontally arranged, the pole piece 4 passes through the tension swing roller 21, and one side of the tension swing roller 21 is provided with a swing driving part 22 for driving the tension swing roller 21 to swing to adjust the tension of the pole piece 4.
[0041] In a preferred embodiment, the tension control assembly 2 further comprises a fixed seat 23, and a rotating shaft 24 is rotatably arranged on the fixed seat 23, specifically, the rotating shaft 24 is arranged in parallel with the tension swing roller 21, and both ends of the rotating shaft 24 in the axial direction are rotatably connected with the fixed seat 23, as shown in some specific embodiments, the rotating shaft 24 can be rotatably connected with the fixed seat 23 through a bearing. A swing arm 25 is sleeved on the rotating shaft 24, and the tension swing roller 21 is connected with the swing arm 25, specifically, the swing arm 25 is arranged at both ends of the tension swing roller 21 in the axial direction to connect the tension swing roller 21 and the rotating shaft 24, and when the rotating shaft 24 rotates, the swing arm 25 and the tension swing roller 21 can be driven to swing, thereby adjusting and controlling the tension of the pole piece 4.
[0042] In the preferred embodiment, the swing driving member 22 comprises a swing cylinder 221, in particular, the swing cylinder 221 preferably but not limited to a low friction cylinder, to drive the swing arm 25 to swing to an appropriate angle to adjust the tension of the pole piece 4. The swing cylinder 221 is arranged at one side of the tension swing roller 21 in the axial direction, and a push rod 222 is arranged on the swing arm 25, the push rod 222 is arranged opposite to the swing cylinder 221, the driving end of the swing cylinder 221, i.e. the piston rod end, extends and pushes the push rod 222, the swing cylinder 221 drives the swing arm 25 to swing, and the swing arm 25 drives the tension swing roller 21 to swing, and the swing arm 25 is rotationally connected to the fixed seat 23 through the rotating shaft 24.
[0043] In the preferred embodiment, the rotating shaft 24 penetrates the fixed seat 23 at one side in the axial direction and is connected with a potentiometer 26, the potentiometer 26 can be arranged on the fixed seat 23 and detects the swing position of the tension swing roller 21 through the rotation of the rotating shaft 24.
[0044] Please refer to Figure 1 , in particular, in the first tension control section 12, a plurality of over rollers 16 are arranged between the tension swing roller 21 and the cutoff assembly 1, and the pole piece 4 unwound from the roll assembly 3 is transmitted to the cutoff assembly 1 through the tension swing roller 21 and the plurality of over rollers 16, which can adapt to a slower pole piece 4 running speed. In the second tension control section 13, a guide roller 15 is arranged between the tension swing roller 21 and the cutoff assembly 1, and the pole piece 4 at the cutoff assembly 1 is transmitted to the tension swing roller 21 for tension adjustment in the second tension control section 13, which can adapt to a faster pole piece 4 running speed and improve the stability of the pole piece belt.
[0045] Please refer to Figure 4 , in the preferred embodiment, the cutoff assembly 1 comprises a cutoff roller 11, in particular, the cutoff roller 11 is arranged parallel to the tension swing roller 21, wherein in the first tension control section 12, the over roller 16 is located between the cutoff roller 11 and the tension swing roller 21; in the second tension control section 13, the guide roller 15 is located between the cutoff roller and the tension swing roller 21.
[0046] The cutoff assembly 1 further comprises a bearing frame 141, the cutoff roller 11 is arranged on the bearing frame 141, and the bearing frame 141 is drivingly connected with a cutoff driving member 14 for driving the bearing frame 141 to move to adjust the tension of the pole piece 4 on the cutoff roller 11. As shown in some specific embodiments, the cutoff driving member 14 can drive the bearing frame 141 to move up and down, and the bearing frame 141 drives the cutoff roller 11 to move up and down to adjust the tension of the pole piece 4.
[0047] Specifically, the partition driving member 14 preferably but not limited to adopts a linear module, the linear module includes a linear motor and a guide rail, the output end of the linear motor is in transmission connection with a bearing frame 141, the bearing frame 141 is in sliding connection with the guide rail, the linear motor drives the bearing frame 141 to slide along the guide rail, a drag chain can be arranged between the bearing frame 141 and the linear motor, which is beneficial to improve the stability of the movement adjustment of the bearing frame 141, the linear motor and the drag chain cooperate to drive the bearing frame 141 to move, the driving mode of the linear motor and the drag chain is known to those skilled in the art and can be realized, and is not described in detail in the embodiment. As shown in some other specific embodiments, the partition driving member 14 can also adopt a partition air cylinder, the partition air cylinder drives the bearing frame 141 to move through stroke change.
[0048] During the process of the pole piece 4 passing through the partition roller 11, the pole piece 4 can form an included angle of 180° on the partition roller 11, the partition driving member 14 drives the bearing frame 141 to ascend and descend, further, the bearing frame 141 drives the partition roller 11 to ascend and descend, and the partition assembly 1 can form a tension partition of the pole piece 4 and play a role of pole piece 4 buffer.
[0049] Embodiment 3:
[0050] The difference between the embodiment and the above-mentioned embodiments is that the swing driving member 22 of the embodiment is a DD motor, and the DD motor as the swing driving member 22 can make the tension control assembly 2 have the characteristics of high torque and high precision, thereby providing faster and more reliable pole piece tension control. Specifically, the output end of the swing driving member 22 is in transmission connection with one end of the rotating shaft 24 along the axial direction, the swing driving member 22 drives the rotating shaft 24 to rotate to realize the swing of the swing arm 25, the swing arm 25 drives the swing roller to swing, and the pole piece belt road is subjected to tension adjustment, at this time, the swing driving member 22 can adapt to faster pole piece 4 running speed. In the preferred embodiment, the swing arm 25 is detachably connected with the rotating shaft 24, specifically, the swing arm 25 can be assembled with the rotating shaft 24 through bolts.
[0051] Embodiment 4:
[0052] The embodiment provides a lamination machine on the basis of the above-mentioned embodiments.
[0053] The lamination machine comprises the above-mentioned pole piece unwinding device, and a cutting mechanism is arranged downstream of the pole piece unwinding device, and the pole piece 4 is conveyed to the cutting mechanism to be cut after passing through the partition roller 11, the guide roller 15 and the tension swing roller 21 in the second tension control section 13.
[0054] The lamination machine of the utility model, the tension control assembly 2 carries out tension adjustment and control by the first tension control section 12 and the second tension control section 13, the tension adjustment of the pole piece belt road is more rapid and can adjust the tension of different positions more accurately, the pole piece belt road shakes down, and it is favorable to improve the running speed of the lamination machine and guarantee the cutting quality of the pole piece 4.
[0055] In the utility model, unless there is definite stipulation and limitation, the terms "mount", "connect", "fix", and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or the communication inside two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.
[0056] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, or the orientation or position relationship when the utility model product is usually placed, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, structure and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0057] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0058] In the utility model, unless there is definite stipulation and limitation, the first feature above or below the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.
[0059] Although the description of the utility model is combined with above specific embodiment, but, personnel familiar with this technical field can carry out many substitutions, modification and change according to the above content, it is obvious. Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A pole piece unwinding device, characterized in that: include A partition assembly (1) is located on the tape path of the pole piece (4), the tape path of the pole piece (4) being divided by the partition assembly (1) into a first tension control section (12) and a second tension control section (13); and A tension control component (2) is provided in the first tension control section (12) and the second tension control section (13), respectively, and adjusts the tension of the pole piece (4) in the first tension control section (12) and the second tension control section (13) in sections.
2. The pole piece unwinding device according to claim 1, characterized in that: The pole piece unwinding device further comprises a material coil assembly (3), and the first tension control section (12) is located between the material coil assembly (3) and the partition assembly (1); The second tension control section (13) is used to be connected to the cutting mechanism, and the second tension control section (13) is located between the partition assembly (1) and the cutting mechanism.
3. The pole piece unwinding device according to claim 1, characterized in that: The tension control assembly (2) comprises a tension swing roller (21), and a swing driving member (22) is provided on one side of the tension swing roller (21) for driving the tension swing roller (21) to swing so as to adjust the tension of the pole piece (4).
4. The pole piece unwinding device according to claim 3, characterized in that: The swing driving member (22) comprises a swing cylinder (221) drivingly connected to the tension swing roller (21).
5. The pole piece unwinding device according to claim 3, characterized in that: The swing driving member (22) is a DD motor drivingly connected to the tension swing roller (21).
6. The pole piece unwinding device according to claim 4 or 5, characterized in that: The tension control assembly (2) further comprises a fixed seat (23), a rotating shaft (24) is rotatably provided on the fixed seat (23), a swing arm (25) is sleeved on the rotating shaft (24), the tension swing roller (21) is connected to the swing arm (25), and the swing driving member (22) drives the rotating shaft (24) and the swing arm (25) to swing relative to the fixed seat (23).
7. The pole piece unwinding device according to claim 6, characterized in that: The swing arm (25) is provided with a push rod (222) pushed by the driving end of the swing cylinder (221).
8. The pole piece unwinding device according to claim 6, characterized in that: A potentiometer (26) for detecting the swing position of the tension swing roller (21) is provided on the fixing seat (23), and the potentiometer (26) is connected to the rotating shaft (24).
9. The pole piece unwinding device according to claim 1, characterized in that: The partition assembly (1) comprises a partition roller (11) for forming tension partition of the pole piece (4), the first tension control section (12) and the second tension control section (13) being respectively located on both sides of the partition roller (11) along the tape path of the pole piece (4); The partition roller (11) is transmission-connected to a partition driving member (14) for driving the partition roller (11) to move so as to adjust the tension of the pole piece (4) on the partition roller (11).
10. A laminating machine, characterized in that: It comprises a pole piece unwinding device as claimed in any one of claims 1 to 9.