Rewinder

Abstract

The application relates to a rewinding machine, comprising an unwinding mechanism, a main transmission roller assembly, a winding mechanism and a tension detection assembly; the unwinding mechanism is configured to unwind a winding piece to form a material belt, the winding mechanism is configured to rewind the material belt to form the winding piece; the material belt is sequentially arranged around the unwinding mechanism, the main transmission roller assembly and the winding mechanism; a part of the material belt between the unwinding mechanism and the main transmission roller assembly is a first section, and a part of the material belt between the main transmission roller assembly and the winding mechanism is a second section; the tension detection assembly is configured to detect the tension of the first section and the second section respectively; and the main transmission roller assembly is configured to drive the material belt to transmit and adjust the tension of the first section and the second section. The rewinding machine provided by the application has the advantages of good quality.

Description

Technical Field

[0001] This application relates to the field of winding machine technology, and in particular to a rewinding machine. Background Technology

[0002] With the rapid and high-quality development of the aluminum foil industry for electrolytic capacitors, greater attention is being paid to improving the quality and efficiency control of aluminum foil processing. This places higher demands on the intelligent control of soft rewinding of electronic aluminum foil and the stable control capabilities of high-precision and high-speed rewinding. Currently, the winding machine uses constant tension control for the rewinding process of aluminum foil for electrolytic capacitors, resulting in slow rewinding speed, a significant increase in aluminum foil thickness deviation, poor sheet shape, and end-face misalignment waste, seriously affecting the efficiency and quality of aluminum foil rewinding. Utility Model Content

[0003] Therefore, it is necessary to provide a rewinding machine to address the problem of low rewinding quality.

[0004] A first aspect of this application provides a rewinding machine, comprising: an unwinding mechanism, a main drive roller assembly, a winding mechanism, and a tension detection assembly; the unwinding mechanism is configured to unwind a wound component to form a strip, and the winding mechanism is configured to rewind the strip to form the wound component; the strip is sequentially wound around the unwinding mechanism, the main drive roller assembly, and the winding mechanism; the portion of the strip located between the unwinding mechanism and the main drive roller assembly is a first segment, and the portion of the strip located between the main drive roller assembly and the winding mechanism is a second segment; the tension detection assembly is configured to detect the tension of the first segment and the second segment respectively; the main drive roller assembly is configured to drive the strip for transmission and adjust the tension of the first segment and the second segment.

[0005] In one embodiment, the main drive roller assembly includes a drive roller, a pressure roller, an oscillator, and a first drive unit; the material belt is wound around the drive roller; the first drive unit is drively connected to the drive roller and is used to drive the drive roller to rotate; the oscillator is used to drive the pressure roller to move closer to or further away from the drive roller to adjust the tension of the first section and the second section.

[0006] In one embodiment, the tension of the first section is 150N to 350N; and / or, the tension of the second section is 250N to 550N.

[0007] In one embodiment, the oscillator includes an oscillating rod, a second driving unit, and a fixed frame. The oscillating rod is rotatably mounted on the fixed frame. One end of the oscillating rod is connected to the pressure roller, and the other end of the oscillating rod is hinged to the second driving unit. The second driving unit is mounted on the fixed frame and is used to drive the oscillating rod to rotate, so that the oscillating rod drives the pressure roller to move closer to or away from the drive roller.

[0008] In one embodiment, the second drive unit is a cylinder, a motor, or a hydraulic cylinder; and / or, the first drive unit is a motor.

[0009] In one embodiment, the tension detection assembly includes a first tension detection roller, a second tension detection roller, a first load sensor, and a second load sensor; the first section is at least partially wound around the first tension detection roller, and the first load sensor is used to detect the load on the first tension detection roller; the second section is at least partially wound around the second tension detection roller; and the second load sensor is used to detect the load on the second tension detection roller.

[0010] In one embodiment, the rewinder further includes a trimming mechanism disposed between the second tension detection roller and the winding mechanism, the trimming mechanism being configured to cut the strip.

[0011] In one embodiment, the rewinder further includes an electronic control system; the first load sensor is signal-connected to the electronic control system; the second load sensor is signal-connected to the electronic control system; the electronic control system controls the unwinding mechanism, the main drive roller assembly, and the winding mechanism respectively.

[0012] In one embodiment, the rewinder further includes a plurality of first transition rollers, which are sequentially disposed between the unwinding mechanism and the first tension detection roller; the strip is sequentially wound around the unwinding mechanism, the plurality of first transition rollers, the first tension detection roller, the main drive roller assembly, the second tension detection roller and the winding mechanism.

[0013] In one embodiment, the rewinder further includes a plurality of second transition rollers, which are sequentially disposed between the second tension detection roller and the winding mechanism; the strip is sequentially wound around the unwinding mechanism, the first tension detection roller, the main drive roller assembly, the second tension detection roller, the plurality of second transition rollers and the winding mechanism.

[0014] In one embodiment, the rewinder further includes a plurality of third transition rollers, which are sequentially arranged between the first tension detection roller and the main drive roller assembly; the strip is sequentially wound around the unwinding mechanism, the first tension detection roller, the plurality of third transition rollers, the main drive roller assembly, the second tension detection roller, and the winding mechanism.

[0015] The beneficial effects are:

[0016] A rewinding machine according to an embodiment of this application includes a tension detection component and a main drive roller assembly. The tension detection component detects the tension values ​​of a first section and a second section, respectively. The main drive roller assembly drives the strip to be transferred between the unwinding mechanism and the winding mechanism along a preset route. Furthermore, the main drive roller assembly adjusts the tension of the first section and the second section based on the tension signal fed back from the tension detection component. Thus, the tension on the unwinding mechanism side and the tension on the winding mechanism side of the rewinding machine can be set in segments and have high-precision closed-loop detection and control. The main drive roller assembly allows the tension in the first section to be a smaller value, which can effectively improve the thickness deviation and poor shape problems caused by the stretching deformation of the strip. At the same time, the main drive roller assembly allows the tension in the second section to be a larger value. Therefore, the larger tension can effectively improve the end face misalignment and tapering problems after the winding is rewound, ensuring that the strip can be rewound at a higher speed in the winding mechanism. Ultimately, this effectively improves the rewinding efficiency and rewinding quality of the winding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rewinding machine provided in some embodiments of this application.

[0018] Figure 2 This is a schematic diagram showing the positions of the strip, drive roller, pressure roller, oscillator, and second tension detection roller provided in some embodiments of this application.

[0019] Figure 3 A flowchart illustrating a rewinding method provided for some embodiments of this application. Detailed Implementation

[0020] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0022] In the description of the embodiments of this application, if the technical terms such as "first" and "second" appear, these terms are used only for descriptive purposes to distinguish different objects, and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] In the description of the embodiments of this application, if the term "multiple" appears, "multiple" means at least two (including two), such as two, three, etc., unless otherwise explicitly specified. Similarly, if the term "multiple sets" appears, "multiple sets" refers to two or more sets (including two sets), and if the term "multiple pieces" appears, "multiple pieces" refers to two or more pieces (including two pieces).

[0026] In the description of the embodiments of this application, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0027] In the description of the embodiments of this application, unless otherwise explicitly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0030] In related technologies, the processing of aluminum foil for electrolytic capacitors includes 15 steps: melting, casting, milling, homogenization, hot rolling, cold rolling, rewinding, alkaline washing, foil rolling, intermediate annealing, tension leveling, cleaning, shearing, heat treatment, and rewinding. The rewinding process is a crucial finishing step in aluminum foil processing. The tension in the rewinding process for aluminum foil for electrolytic capacitors is controlled by a constant tension, typically between 200N and 500N. Because the raw material for aluminum foil used in electrolytic capacitors is 99.996% high-purity aluminum, and the foil undergoes a long-term high-temperature annealing treatment at 560 degrees Celsius before rewinding, the tensile strength of the aluminum foil is less than 30 MPa. Using a high-tension rewinding process easily causes tensile deformation of the aluminum foil, leading to thickness deviations and poor sheet shape; while using a low-tension rewinding process easily causes misalignment at the end face of the aluminum foil roll, which can lead to a tapered shape at high speeds. Therefore, technical challenges such as poor rewinding sheet shape, thickness deviations, and misalignment at the end face have always existed in the soft-state slitting and rewinding process of aluminum foil, severely restricting the improvement of aluminum foil quality and production efficiency.

[0031] Specifically, regarding the aforementioned aluminum foil soft-state slitting and rewinding process, if the rewinding machine adopts a high-tension rewinding process of 300-500N, it is easy to cause the aluminum foil to be stretched and deformed, resulting in thickness deviation and poor plate shape. For example, it can cause the aluminum foil thickness reduction to be greater than 1.2%, and there will be thickness difference deviation and fluctuation, resulting in unqualified thickness scrap. In addition, the aluminum foil will have poor plate shape such as central wave, edge wave, and rib wave, resulting in unqualified plate shape scrap and poor aluminum foil quality.

[0032] If the rewinding machine uses a low-tension rewinding process of 200-300N, it is easy to cause misalignment of the aluminum foil roll end face. At high speed, this will lead to a tapered shape at the end face of the aluminum foil roll. The aluminum foil cannot be effectively rolled tight, and misalignment of the aluminum foil roll end face will occur, resulting in misalignment of the aluminum foil roll and surface scratches. The faster the rewinding speed, the greater the increase in aluminum foil thickness deviation, poor plate shape, and end face misalignment waste. This means that the rewinding machine can only use a rewinding speed of less than 80m / min for rewinding, which seriously restricts production efficiency.

[0033] A first aspect of the embodiments of this application provides a rewinding machine.

[0034] See Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a rewinding machine provided in some embodiments of this application. Figure 2 This is a schematic diagram showing the positions of the strip, drive roller, pressure roller, oscillator, and second tension detection roller provided in some embodiments of this application. Figure 3 A flowchart illustrating a rewinding method provided for some embodiments of this application.

[0035] The rewinder includes an unwinding mechanism 100, a main drive roller assembly 200, a winding mechanism 300, and a tension detection assembly 400.

[0036] The unwinding mechanism 100 is configured to unwind the winding 900 to form a strip 910, and the take-up mechanism 300 is configured to rewind the strip 910 to form the winding 900; the strip 910 is wound around the unwinding mechanism 100, the main drive roller assembly 200 and the take-up mechanism 300 in sequence.

[0037] The portion of the strip 910 located between the unwinding mechanism 100 and the main drive roller assembly 200 is designated as the first section 911, and the portion of the strip 910 located between the main drive roller assembly 200 and the winding mechanism 300 is designated as the second section 912. The tension detection assembly 400 is configured to detect the tension of both the first section 911 and the second section 912. The main drive roller assembly 200 is configured to drive the strip 910 for transmission and adjust the tension of both the first section 911 and the second section 912.

[0038] The strip 910 of the winding component 900 is guided to the winding mechanism 300 by the unwinding mechanism 100 and the main drive roller assembly 200. The winding mechanism 300 can drive the core (not shown) to rotate, so that the strip 910 can be rewound onto the core to achieve rewinding.

[0039] The portion of the strip 910 located between the unwinding mechanism 100 and the main drive roller assembly 200 is designated as the first section 911, and the portion of the strip 910 located between the main drive roller assembly 200 and the winding mechanism 300 is designated as the second section 912. A tension detection component 400 and a main drive roller assembly 200 are provided. The tension detection component 400 is used to detect the tension values ​​of the first section 911 and the second section 912, respectively. The main drive roller assembly 200 can drive the strip 910 to complete the transfer between the unwinding mechanism 100 and the winding mechanism 300 according to a preset route. Furthermore, the main drive roller assembly 200 can adjust the tension of the first section 911 and the second section 912 based on the tension signal fed back from the tension detection component 400. Thus, the tension on the unwinding mechanism 100 side of the rewinder and the tension on the winding mechanism side are controlled. The tension on one side of 300 can be set in segments and has high-precision closed-loop detection and control. The main drive roller assembly 200 allows the tension on the first section 911 (that is, the tension on the unwinding mechanism 100 side) to be a smaller value. The smaller tension can effectively improve the thickness deviation and poor plate shape caused by the stretching deformation of the strip 910. At the same time, the main drive roller assembly 200 allows the tension on the second section 912 (that is, the tension on the winding mechanism 300 side) to be a larger value. Thus, the larger tension can effectively improve the end face misalignment and tower shape problems after the winding 900 is rewound, ensuring that the strip 910 can be rewound in the winding mechanism 300 at a higher rewinding speed (for example, the overall speed can reach 200m / min). Ultimately, this effectively improves the rewinding efficiency and rewinding quality of the winding 900.

[0040] For ease of understanding, the strip 910 in the embodiments of this application can be of various types, such as aluminum foil, paper, film, etc. The winding component 900 is formed by winding the strip 910, such as an aluminum foil roll formed by winding aluminum foil. The core can be rotated to rewind the strip 910 onto the core, which can be a roller, etc., and this application does not limit this. In the following embodiments, unless otherwise specified, the strip 910 is aluminum foil, and the winding component 900 is an aluminum foil roll.

[0041] In some possible embodiments, the rewinder also includes a frame (not shown). The unwinding mechanism 100, the main drive roller assembly 200, the winding mechanism 300, and the tension detection assembly 400 are all mounted on the frame.

[0042] An unwinding drive unit is provided on one side of the frame. The unwinding drive unit is connected to the unwinding mechanism 100 and can drive the winding component 900 to rotate so that the material strip 910 on the winding component 900 can be conveyed to the winding mechanism 300 through the main drive roller assembly 200.

[0043] A take-up drive unit can also be provided on one side of the frame. The take-up drive unit is connected to the take-up mechanism 300 and can drive the material strip 910 to rotate to complete the rewinding process of the winding part 900, so as to avoid wrinkles in the material strip 910 during the transmission process.

[0044] In some possible embodiments, see Figures 1 to 3 As shown, the main drive roller assembly 200 includes a drive roller 210, a pressure roller 220, an oscillator 230, and a first drive unit (not shown).

[0045] The material strip 910 is wound around the drive roller 210; the first drive unit is connected to the drive roller 210 for driving the drive roller 210 to rotate; the oscillator 230 is used to drive the pressure roller 220 to move closer to or away from the drive roller 210 to adjust the tension of the first section 911 and the second section 912.

[0046] The main drive roller assembly 200, consisting of the drive roller 210, pressure roller 220, oscillator 230, and first drive unit, achieves high-precision segmented control of the tension in the first section 911 and the second section 912.

[0047] Specifically, the first drive unit can drive the drive roller 210 to rotate so that the material strip 910 can pass through the drive roller 210 in sequence and be conveyed toward the winding mechanism 300.

[0048] The oscillator 230 can drive the pressure roller 220 to move closer to or further away from the drive roller 210. When the pressure roller 220 moves away from the drive roller 210, the material strip 910 can pass through easily. When the pressure roller 220 moves closer to the drive roller 210, it can press against the material strip 910 on the drive roller 210 so that the material strip 910 on the drive roller 210 can be stably conveyed to the winding mechanism 300. The oscillator 230 changes the contact pressure by adjusting the distance between the pressure roller 220 and the drive roller 210, thereby changing the wrap angle and friction distribution of the material strip 910. Finally, it works with the unwinding mechanism 100 and the winding mechanism 300 to precisely and independently control the tension on one side of the unwinding mechanism 100 and the tension on the other side of the winding mechanism 300.

[0049] By allowing a smaller tension value on the first section 911, the thickness deviation and poor shape of the strip 910 caused by stretching deformation are effectively improved. At the same time, by stabilizing the tension on one side of the winding mechanism 300 at a higher range, the tension on the second section 912 can be made larger, which significantly improves the winding consistency of the winding part 900, effectively improves the end face misalignment and tower shape problems after the winding part 900 is rewound, and ensures that the strip 910 can be rewound at a higher rewinding speed in the winding mechanism 300. Ultimately, this effectively improves the rewinding efficiency and rewinding quality of the winding part 900.

[0050] Optionally, the drive roller 210 is rotatably connected to the frame, and the first drive unit is a motor, which can directly drive or drive the drive roller 210 to rotate through a reduction mechanism.

[0051] In some possible embodiments, see Figures 1 to 3 As shown, the tension in the first section 911 is 150N~350N.

[0052] By independently controlling the tension of the first section 911 between 150N and 350N, the tensile deformation of the strip 910 during transmission is effectively improved, ensuring stable thickness tolerance and avoiding plate shape defects such as center waves and edge waves.

[0053] Specifically, the tension of the first section 911 can be 200N~300N. For example, 200N, 210N, 234N, 257N, 285N, 293N, 300N, etc.

[0054] In some possible embodiments, see Figures 1 to 3 As shown, the tension in the second section 912 is 250N~550N.

[0055] By independently controlling the tension of the second section 912 between 250N and 550N, the tightness consistency of the winding part 900 is significantly improved, effectively improving the end face misalignment and tower shape problems after the winding part 900 is rewound. This ensures that the strip 910 can be rewound at a high speed in the winding mechanism 300. While ensuring an extremely high yield of the winding part 900, the rewinding speed is increased from below 80m / min to above 200m / min, significantly improving production efficiency.

[0056] Specifically, the tension of the second section 912 can be 300N~500N. For example, 300N, 310N, 354N, 377N, 405N, 423N, 450N, 471N, 490N, 500N, etc.

[0057] In some possible embodiments, see Figures 1 to 3As shown, the oscillator 230 changes the contact pressure by adjusting the distance between the pressure roller 220 and the drive roller 210; the force exerted by the pressure roller 220 against the drive roller 210 can be 2.0~2.5 kgf, thereby independently controlling the tension on one side of the unwinding mechanism 100 and the tension on one side of the winding mechanism 300.

[0058] In some possible embodiments, see Figures 1 to 3 As shown, the swing device 230 includes a swing rod 231, a second drive unit 232, and a fixed frame 233. The swing rod 231 is rotatably mounted on the fixed frame 233. One end of the swing rod 231 is connected to the pressure roller 220, and the other end of the swing rod 231 is hinged to the second drive unit 232.

[0059] The second drive unit 232 is mounted on the fixed frame 233 and is used to drive the swing arm 231 to rotate, so that the swing arm 231 drives the pressure roller 220 to move closer to or away from the drive roller 210.

[0060] There are two swing rods 231 and two drive units 232, respectively disposed at both ends of the pressure roller 220. The swing rod 231 is rotatably mounted on the fixed frame 233, and one end of the swing rod 231 is connected to the pressure roller 220. The second drive unit 232 is hinged to the fixed frame 233, and the other end of the swing rod 231 is connected to the second drive unit 232. The second drive unit 232 can drive the swing rod 231 to rotate, so that the swing rod 231 drives the pressure roller 220 to move closer to or away from the drive roller 210.

[0061] Optionally, the second drive unit 232 can be a cylinder, an electric motor, or a hydraulic cylinder.

[0062] In some possible embodiments, see Figures 1 to 3 As shown, the tension detection assembly 400 includes a first tension detection roller 410, a second tension detection roller 420, a first load sensor (not shown), and a second load sensor (not shown).

[0063] The first section 911 is at least partially wound around the first tension detection roller 410, and the first load sensor is used to detect the load on the first tension detection roller 410; the second section 912 is at least partially wound around the second tension detection roller 420; the second load sensor is used to detect the load on the second tension detection roller 420.

[0064] By setting up a first tension detection roller 410, a second tension detection roller 420, a first load sensor, and a second load sensor, high-precision, real-time closed-loop detection of the tension in the first section 911 and the second section 912 is achieved. Specifically, the tension in the first section 911 is detected by the first load sensor after passing through the first tension detection roller 410 and fed back to the electronic control system (mentioned below); the tension in the second section 912 is monitored in real time by the second load sensor after passing through the second tension detection roller 420 and fed back to the electronic control system (mentioned below). The tension detection assembly 400 provides immediate and accurate feedback signals on the tension in the first section 911 and the second section 912, enabling the main drive roller assembly 200 to quickly and accurately adjust the interaction between the drive roller 210 and the pressure roller 220, thereby ensuring that the first section 911 has relatively low tension and the second section 912 has relatively high tension. Ultimately, this effectively improves the rewinding efficiency and quality of the winding component 900.

[0065] Optionally, the first load sensor may be a strain gauge tension sensor or a piezoelectric sensor; the second load sensor may be a strain gauge tension sensor or a piezoelectric sensor.

[0066] In some possible embodiments, see Figures 1 to 3 As shown, the rewinder also includes a trimming mechanism 600; the trimming mechanism 600 is disposed between the second tension detection roller 420 and the winding mechanism 300, and the trimming mechanism 600 is configured to cut the strip 910.

[0067] The strip 910 of the winding component 900 is guided to the take-up mechanism 300 via the unwinding mechanism 100 and the main drive roller assembly 200. The take-up mechanism 300 drives the core (not shown) to rotate and, in cooperation with the trimming mechanism 600, allows the strip 910 to be rewound onto the core, thus achieving rewinding. When the strip 910 rewound onto the core reaches a preset value, the trimming mechanism 600 cuts the strip 910 so that the strip 910 on the winding component 900 can be rewound again.

[0068] Specifically, the trimming mechanism 600 may include a trimming drive unit (not shown) and a cutting component (not shown). The trimming drive unit is connected to the frame, and the cutting component is disposed on the trimming drive unit. The trimming drive unit can drive the cutting component to move so that the cutting component can cut the strip 910.

[0069] In some possible embodiments, see Figures 1 to 3 As shown, the rewinder also includes an electronic control system (not shown); a first load sensor is connected to the electronic control system; a second load sensor is also connected to the electronic control system. The electronic control system controls the unwinding mechanism 100, the main drive roller assembly 200, and the winding mechanism 300, respectively.

[0070] The first section 911 winds around the first tension detection roller 410. The tension on the first section 911 is detected by the first load sensor and fed back to the electronic control system (mentioned below). The second section 912 winds around the second tension detection roller 420. The tension on the second section 912 is monitored in real time by the second load sensor and fed back to the electronic control system (mentioned below). The tension detection assembly 400 provides immediate and accurate feedback signals for the tension on the first section 911 and the second section 912. The electronic control system controls the unwinding mechanism 100, the main drive roller assembly 200 and the winding mechanism 300 respectively, so that the main drive roller assembly 200 can accurately adjust the interaction between the drive roller 210 and the pressure roller 220, thereby ensuring that the first section 911 has a relatively low tension and that the second section 912 has a relatively high tension. Ultimately, this effectively improves the rewinding efficiency and rewinding quality of the winding 900.

[0071] In some possible embodiments, see Figures 1 to 3 As shown, the rewinder also includes a plurality of first transition rollers 510, which are sequentially arranged between the unwinding mechanism 100 and the first tension detection roller 410.

[0072] The strip 910 is wound in sequence with an unwinding mechanism 100, multiple first transition rollers 510, a first tension detection roller 410, a main drive roller assembly 200, a second tension detection roller 420, and a winding mechanism 300.

[0073] By setting multiple first transition rollers 510 between the unwinding mechanism 100 and the first tension detection roller 410, and by having the strip 910 sequentially pass through the unwinding mechanism 100, the multiple first transition rollers 510, the first tension detection roller 410, the main drive roller assembly 200, the second tension detection roller 420, and the winding mechanism 300, the multiple first transition rollers 510 effectively guide and support the strip 910, significantly reducing the shaking, deviation, and vibration of the strip 910 after it is drawn out from the unwinding mechanism 100, and greatly improving the accuracy and reliability of the tension detection signal of the first load sensor for the first section 911.

[0074] In some possible embodiments, see Figures 1 to 3 As shown, the rewinder also includes multiple second transition rollers 520, which are sequentially arranged between the second tension detection roller 420 and the winding mechanism 300.

[0075] The strip 910 is wound in sequence with an unwinding mechanism 100, a first tension detection roller 410, a main drive roller assembly 200, a second tension detection roller 420, multiple second transition rollers 520 and a winding mechanism 300.

[0076] By setting multiple second transition rollers 520 sequentially between the second tension detection roller 420 and the winding mechanism 300, and by having the strip 910 sequentially wind around the unwinding mechanism 100, the first tension detection roller 410, the main drive roller assembly 200, the second tension detection roller 420, the multiple second transition rollers 520, and the winding mechanism 300, the multiple second transition rollers 520 effectively guide and support the strip 910, significantly reducing the shaking, deviation, and vibration of the strip 910 after it is drawn out from the second tension detection roller 420, and greatly improving the accuracy and reliability of the tension detection signal of the second section 912 by the second load sensor.

[0077] In some possible embodiments, see Figures 1 to 3 As shown, the rewinder also includes multiple third transition rollers 530, which are sequentially arranged between the first tension detection roller 410 and the main drive roller assembly 200.

[0078] The strip 910 is wound in sequence with an unwinding mechanism 100, a first tension detection roller 410, multiple third transition rollers 530, a main drive roller assembly 200, a second tension detection roller 420, and a winding mechanism 300.

[0079] By setting multiple third transition rollers 530 sequentially between the first tension detection roller 410 and the main drive roller assembly 200, and by having the strip 910 sequentially wind around the unwinding mechanism 100, the first tension detection roller 410, multiple third transition rollers 530, the main drive roller assembly 200, the second tension detection roller 420, and the winding mechanism 300, the multiple third transition rollers 530 effectively guide and support the strip 910, significantly reducing the shaking, deviation, and vibration of the strip 910 after it is drawn out from the first tension detection roller 410, and greatly improving the accuracy and reliability of the tension detection signal of the first load sensor for the first section 911.

[0080] It is understood that the first transition roller 510, the second transition roller 520 and the third transition roller 530 can be set individually or simultaneously, depending on the design.

[0081] Combination Figure 1 As shown, the strip 910 is sequentially wound around an unwinding mechanism 100, multiple first transition rollers 510, a first tension detection roller 410, multiple third transition rollers 530, a main drive roller assembly 200, a second tension detection roller 420, multiple second transition rollers 520, and a winding mechanism 300.

[0082] Throughout the process from the unwinding mechanism 100 to the winding mechanism 300, multiple first transition rollers 510, multiple second transition rollers 520, and multiple third transition rollers 530 provide effective guidance and stable support for the strip 910, significantly reducing potential jitter, deviation, and vibration of the strip 910. This greatly improves the accuracy and reliability of the tension detection signal of the first section 911 by the first load sensor and the tension detection signal of the second section 912 by the second load sensor. This enables the main drive roller assembly 200 to quickly and accurately adjust the interaction between the drive roller 210 and the pressure roller 220, thereby ensuring that the first section 911 has relatively low tension and the second section 912 has relatively high tension. Ultimately, this effectively improves the rewinding efficiency and rewinding quality of the winding 900.

[0083] A second aspect of this application provides a rewinding method applied to the aforementioned rewinding machine.

[0084] Re-examination methods include:

[0085] S10. Install the wound piece 900 onto the unwinding mechanism 100.

[0086] S20, the guide winding component 900, the strip 910 is sequentially wound around the unwinding mechanism 100, the main drive roller assembly 200 and the winding mechanism 300.

[0087] S30, starting unwinding mechanism 100, main drive roller assembly 200 and winding mechanism 300.

[0088] S40. Detect and control the tension of the first section 911 to be within the first preset range.

[0089] S50, detect and control the tension of the second section 912 to be within the second preset range.

[0090] S60, control the rotational speed of the unwinding mechanism 100, the main drive roller assembly 200 and the winding mechanism 300 to the third preset range.

[0091] S70 and strip 910 are rewound on the winding mechanism 300.

[0092] The first preset range can be 150N~350N. By independently controlling the tension of the first section 911 within the range of 150N~350N, the tensile deformation of the strip 910 during transmission is effectively improved, ensuring stable thickness tolerance and avoiding plate shape defects such as center waviness and edge waviness. Specifically, the tension of the first section 911 can be 200N~300N.

[0093] The second preset range is 250N~550N. By independently controlling the tension of the second section 912 within the range of 250N~550N, the winding consistency of the wound part 900 is significantly improved, effectively addressing the end-face misalignment and stacking issues after rewinding. This ensures that the strip 910 can be rewound at a high speed in the winding mechanism 300, guaranteeing an extremely high yield of the wound part 900 while increasing the rewinding speed from below 80m / min to above 200m / min, significantly improving production efficiency. Specifically, the tension of the second section 912 can be 300N~500N.

[0094] The third preset range is 100m / min to 300m / min. By controlling the rotational speeds of the unwinding mechanism 100, the main drive roller assembly 200, and the winding mechanism 300 within the range of 100m / min to 300m / min, it is ensured that the strip 910 can be rewound at a high speed in the winding mechanism 300, thereby effectively improving the rewinding efficiency and quality of the wound part 900. Specifically, the rotational speeds of the unwinding mechanism 100, the main drive roller assembly 200, and the winding mechanism 300 can be 200m / min.

[0095] To better illustrate that the rewinding machine in this application embodiment has good rewinding efficiency and rewinding quality, comparative tests were conducted using experimental group 1#, experimental group 2#, control group 1#, and control group 2#.

[0096] Experimental Group 1#

[0097] The rewinding machine produces aluminum foil with a thickness of 0.108mm. It adopts a production process with a tension of 220N on the first section 911 (that is, the tension on the unwinding mechanism 100 side) and a tension of 420N on the second section 912 (that is, the tension on the winding mechanism 300 side) and a winding speed of 200m / min.

[0098] Experimental Group 2#

[0099] The rewinding machine produces aluminum foil with a thickness of 0.130mm. It adopts a production process with a tension of 250N on the first section 911 (that is, the tension on the unwinding mechanism 100 side) and a tension of 450N on the second section 912 (that is, the tension on the winding mechanism 300 side) and a winding speed of 200m / min.

[0100] Control group #1

[0101] The rewinding machine produces aluminum foil with a thickness of 0.132mm. It adopts a production process with a tension of 500N (that is, the overall tension of the material strip 910 from the unwinding mechanism to the winding mechanism is constant at 500N) and a winding speed of 80m / min.

[0102] Control group #2

[0103] The rewinding machine produces aluminum foil with a thickness of 0.102mm. It adopts a production process with a tension of 250N (that is, the overall tension of the material strip 910 from the unwinding mechanism to the winding mechanism is constant at 250N) and a winding speed of 80m / min.

[0104] After the production of aluminum coil #1 in control group was completed, complaints about wavy patterns and thickness deviations occurred, resulting in substandard scrap. During the rewinding process of aluminum coil #2 in control group, end-face misalignment and stacking occurred, resulting in substandard scrap.

[0105] After production, the aluminum coils in Experiment Group 1 showed no misalignment at the end face, and the thickness deviation and shape defects were within acceptable limits. Similarly, after production, the aluminum coils in Experiment Group 2 showed no misalignment at the end face, and the thickness deviation and shape defects were within acceptable limits.

[0106] This indicates that production using the rewinding machine and corresponding rewinding method of the present application can effectively improve the thickness deviation and poor plate shape of the strip 910 caused by stretching deformation, and can also effectively improve the end face misalignment and tower shape problems of the wound part 900 after rewinding, ensuring that the strip 910 can be rewound at a high speed in the winding mechanism 300, effectively improving the rewinding efficiency and rewinding quality of the wound part 900.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A rewinding machine, characterized in that, The rewinder includes: an unwinding mechanism (100), a main drive roller assembly (200), a winding mechanism (300), and a tension detection assembly (400). The unwinding mechanism (100) is configured to unwind the winding (900) to form a strip (910), and the take-up mechanism (300) is configured to rewind the strip (910) to form the winding (900); the strip (910) is wound sequentially around the unwinding mechanism (100), the main drive roller assembly (200), and the take-up mechanism (300). The portion of the material strip (910) located between the unwinding mechanism (100) and the main drive roller assembly (200) is the first section (911), and the portion of the material strip (910) located between the main drive roller assembly (200) and the winding mechanism (300) is the second section (912). The tension detection component (400) is configured to detect the tension of the first segment (911) and the second segment (912) respectively; The main drive roller assembly (200) is configured to drive the belt (910) for transmission and adjust the tension of the first section (911) and the second section (912).

2. The rewinding machine according to claim 1, characterized in that, The main drive roller assembly (200) includes a drive roller (210), a pressure roller (220), an oscillator (230), and a first drive unit; The material strip (910) is wound around the drive roller (210); the first drive unit is connected to the drive roller (210) for driving the drive roller (210) to rotate; The oscillator (230) is used to drive the pressure roller (220) closer to or further away from the drive roller (210) to adjust the tension of the first section (911) and the second section (912).

3. The rewinding machine according to claim 2, characterized in that, The tension in the first section (911) is 150N~350N; and / or, The tension in the second section (912) is 250N~550N.

4. The rewinding machine according to claim 2, characterized in that, The oscillator (230) includes an oscillating rod (231), a second drive unit (232), and a fixed frame (233). The oscillating rod (231) is rotatably mounted on the fixed frame (233). One end of the oscillating rod (231) is connected to the pressure roller (220), and the other end of the oscillating rod (231) is hinged to the second drive unit (232). The second drive unit (232) is disposed on the fixed frame (233) and is used to drive the swing rod (231) to rotate, so that the swing rod (231) drives the pressure roller (220) to move closer to or away from the drive roller (210).

5. The rewinding machine according to claim 4, characterized in that, The second drive unit (232) is a cylinder, a motor, or a hydraulic cylinder; and / or, The first drive unit is a motor.

6. The rewinding machine according to any one of claims 1 to 5, characterized in that, The tension detection assembly (400) includes a first tension detection roller (410), a second tension detection roller (420), a first load sensor, and a second load sensor; The first section (911) is at least partially wound around the first tension detection roller (410), and the first load sensor is used to detect the load on the first tension detection roller (410); The second section (912) is at least partially wound around the second tension detection roller (420); the second load sensor is used to detect the load on the second tension detection roller (420).

7. The rewinding machine according to claim 6, characterized in that, The rewinder also includes a cutting mechanism (600); the cutting mechanism (600) is disposed between the second tension detection roller (420) and the winding mechanism (300), and the cutting mechanism (600) is configured to cut the strip (910).

8. The rewinder according to claim 6, characterized in that, The rewinder also includes an electronic control system; the first load sensor is connected to the electronic control system via signal connection; the second load sensor is also connected to the electronic control system via signal connection. The electronic control system controls the unwinding mechanism (100), the main drive roller assembly (200), and the winding mechanism (300) respectively.

9. The rewinding machine according to claim 6, characterized in that, The rewinder also includes a plurality of first transition rollers (510), which are sequentially arranged between the unwinding mechanism (100) and the first tension detection roller (410); The strip (910) is sequentially wound around the unwinding mechanism (100), a plurality of first transition rollers (510), the first tension detection roller (410), the main drive roller assembly (200), the second tension detection roller (420) and the winding mechanism (300).

10. The rewinding machine according to claim 6, characterized in that, The rewinder also includes a plurality of second transition rollers (520), which are sequentially arranged between the second tension detection roller (420) and the winding mechanism (300); The strip (910) is wound in sequence around the unwinding mechanism (100), the first tension detection roller (410), the main drive roller assembly (200), the second tension detection roller (420), a plurality of second transition rollers (520) and the winding mechanism (300).

11. The rewinding machine according to claim 6, characterized in that, The rewinder also includes a plurality of third transition rollers (530), which are sequentially arranged between the first tension detection roller (410) and the main drive roller assembly (200); The strip (910) is wound in sequence around the unwinding mechanism (100), the first tension detection roller (410), a plurality of the third transition rollers (530), the main drive roller assembly (200), the second tension detection roller (420) and the winding mechanism (300).

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