A roll-to-roll calendering apparatus for copper alloy heating films

Abstract

This utility model relates to the field of roll-to-roll calendering technology and discloses a roll-to-roll calendering device for copper alloy heating film. The device includes a segmented heating box, a calendering device on the right side of the segmented heating box, a control panel fixedly installed on the left side of the calendering device, a partitioning mechanism inside the segmented heating box, an adjustment mechanism inside the segmented heating box, and a cover plate on the top of the segmented heating box. The segmented heating box and the cover plate are fixedly installed by bolts. The device releases cold rolling stress in stages through gradient annealing (200℃→120℃→50℃), significantly reducing the risk of bending cracking, eliminating the need for offline annealing, improving production efficiency, and eliminating the need to re-roll the cold-rolled copper foil roll, saving time and effort, and avoiding the probability of damage to the copper foil from multiple windings, thereby increasing the yield.

Description

Technical Field

[0001] This utility model relates to the field of roll-to-roll calendering technology, specifically a roll-to-roll calendering device for copper alloy heating films. Background Technology

[0002] In the production process of ultra-thin copper alloy foil for applications such as electric heating films for new energy vehicles and flexible electronic devices, the copper alloy lattice generates dislocation accumulation and residual stress due to plastic deformation, requiring continuous cold rolling-annealing integrated processing. Currently, the rolling processing of copper alloy heating films generally adopts a segmented process of cold rolling followed by offline annealing.

[0003] The rolling process of copper alloy heating film generally adopts a segmented process of cold rolling followed by offline annealing. Existing technology uses offline annealing furnaces (such as box furnaces or continuous annealing furnaces), which requires the cold-rolled copper foil rolls to be re-rolled and then subjected to a separate heating process, resulting in a longer production cycle. In addition, multiple windings can increase the probability of hard objects in the surrounding environment scratching the surface of the copper foil during the winding process. Therefore, it is necessary to improve the roll-to-roll rolling device for copper alloy heating film to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a roll-to-roll calendering apparatus for copper alloy heating films to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a roll-to-roll calendering device for copper alloy heating film, comprising a segmented heating box, a calendering device disposed on the right side of the segmented heating box, a control panel fixedly installed on the left side of the calendering device, a partitioning mechanism disposed inside the segmented heating box, an adjustment mechanism disposed inside the segmented heating box, a cover plate disposed on the top of the segmented heating box, and the segmented heating box and the cover plate being fixedly installed by bolts.

[0006] Preferably, the partitioning mechanism includes a feeding roller, which is rotatably installed at the feed inlet position on the right side of the segmented heating box. A fixed bracket is fixedly installed inside the segmented heating box, and a partition curtain is fixedly installed at the bottom of the fixed bracket. The segmented heating box is provided with a high-temperature zone, a medium-temperature zone, and a low-temperature zone.

[0007] Preferably, the right inlet of the segmented heating box corresponds to the left outlet of the calendering device.

[0008] Preferably, the partition curtains are arranged in four sets and linearly distributed at the bottom of the fixed support, which evenly divide the interior of the segmented heating box into three areas: a high-temperature area, a medium-temperature area, and a low-temperature area. The three areas are arranged sequentially from right to left. The conveyor rollers are arranged in three sets and are respectively located inside the three areas.

[0009] Preferably, the adjustment mechanism includes a sliding frame, a honeycomb base plate is fixedly installed at the bottom of the sliding frame, a carbon fiber infrared heating plate is slidably installed inside the sliding frame, a handle is fixedly installed at the top of the carbon fiber infrared heating plate, the sliding frame and the carbon fiber infrared heating plate are fixedly installed by bolt two, and the fixed bracket and the sliding frame are fixedly installed by bolt three.

[0010] Preferably, a groove is provided at the corresponding position of the fixed bracket and the sliding frame, and the sliding frame is slidably installed inside the groove. Furthermore, multiple sets of threaded grooves are provided at the corresponding positions of the fixed bracket and the bolts along the vertical direction.

[0011] Preferably, the fixed bracket has honeycomb holes at the corresponding positions on the bottom of the sliding frame, and the carbon fiber infrared heating plate is evenly arranged inside the sliding frame and is set at the top of the three areas: high temperature zone, medium temperature zone and low temperature zone.

[0012] Compared with the prior art, the present invention provides a roll-to-roll calendering apparatus for copper alloy heating films, which has the following advantages:

[0013] 1. This roll-to-roll rolling device for copper alloy heating films, through its partitioned mechanism, releases cold rolling stress in stages during use via gradient annealing (200℃→120℃→50℃), significantly reducing the risk of bending cracks, eliminating the need for offline annealing, thus improving production efficiency. Furthermore, it eliminates the need to re-roll the cold-rolled copper foil rolls, saving time and effort, and avoiding the probability of damage to the copper foil from repeated winding, thereby increasing the yield.

[0014] 2. This roll-to-roll calendering device for copper alloy heating films, through its adjustable mechanism, ensures uniform heating when annealing copper foils of different thicknesses by adjusting the distance between the carbon fiber infrared heating plate and the copper foil during operation. Furthermore, adjusting the distance according to the copper foil thickness prevents excessive heat concentration in high-temperature areas, delaying oxidation of the carbon fiber infrared heating plate surface. During maintenance, the entire heating module can be replaced quickly without disassembling the entire device. The modular design of the carbon fiber infrared heating plate allows for replacement during equipment operation, eliminating the need for production line downtime. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic diagram of the external structure of the adjustment mechanism of this utility model;

[0019] Figure 4 This is an exploded view of the adjustment mechanism of this utility model.

[0020] In the diagram: 1. Segmented heating box; 2. Zoning mechanism; 21. Feed roller; 22. Fixed bracket; 23. Partition curtain; 24. Conveyor roller; 25. High temperature zone; 26. Medium temperature zone; 27. Low temperature zone; 3. Adjustment mechanism; 31. Honeycomb base plate; 32. Carbon fiber infrared heating plate; 33. Handle; 34. Bolt 2; 35. Bolt 3; 36. Sliding frame; 4. Calendering device; 5. Control panel; 6. Cover plate; 7. Bolt 1. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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 this utility model according to the specific circumstances.

[0023] Example 1:

[0024] Please see Figure 1-3 This utility model provides a technical solution: a roll-to-roll calendering device for copper alloy heating film, including a segmented heating box 1, a calendering device 4 on the right side of the segmented heating box 1, a control panel 5 fixedly installed on the left side of the calendering device 4, a partitioning mechanism 2 inside the segmented heating box 1, an adjustment mechanism 3 inside the segmented heating box 1, and a cover plate 6 on the top of the segmented heating box 1. The segmented heating box 1 and the cover plate 6 are fixedly installed by bolts 7.

[0025] Furthermore, the partitioning mechanism 2 includes a feed roller 21, which is rotatably installed at the feed inlet position on the right side of the segmented heating box 1. A fixed bracket 22 is fixedly installed inside the segmented heating box 1, and a partition curtain 23 is fixedly installed at the bottom of the fixed bracket 22. The segmented heating box 1 is provided with a high temperature zone 25, a medium temperature zone 26, and a low temperature zone 27. By releasing the cold rolling stress in stages through gradient annealing (200℃→120℃→50℃), the risk of bending cracking is greatly reduced, and the offline annealing process is eliminated.

[0026] Furthermore, the right inlet of the segmented heating box 1 corresponds to the left outlet of the calendering device 4, directly eliminating the offline annealing process and improving production efficiency.

[0027] Furthermore, four sets of partition curtains 23 are arranged linearly at the bottom of the fixed support 22, which evenly divide the interior of the segmented heating box 1 into three regions: high temperature zone 25, medium temperature zone 26, and low temperature zone 27. The three regions are arranged sequentially from right to left. Three sets of conveyor rollers 24 are arranged in the three regions respectively, and the cold rolling stress is released in stages through gradient annealing 200℃→120℃→50℃.

[0028] It should be noted that the temperature of high temperature zone 25 is 200℃, the temperature inside medium temperature zone 26 is 120℃, the temperature inside low temperature zone 27 is 50℃, and the material of curtain 23 is ceramic fiber composite cloth.

[0029] Example 2:

[0030] Please see Figure 4 Furthermore, in conjunction with Embodiment 1, the adjusting mechanism 3 includes a sliding frame 36, a honeycomb base plate 31 fixedly installed at the bottom of the sliding frame 36, a carbon fiber infrared heating plate 32 slidably installed inside the sliding frame 36, a handle 33 fixedly installed at the top of the carbon fiber infrared heating plate 32, the sliding frame 36 and the carbon fiber infrared heating plate 32 being fixedly installed together by bolt 2 34, and the fixed bracket 22 being fixedly installed together with the sliding frame 36 by bolt 3 35. By adjusting the distance between the carbon fiber infrared heating plate 32 and the copper foil, a uniform heating effect can be obtained when annealing copper foils of different thicknesses.

[0031] Furthermore, a groove is provided at the corresponding position of the fixed bracket 22 and the sliding frame 36, and the sliding frame 36 is slidably installed inside the groove. Multiple sets of threaded grooves are provided vertically at the corresponding position of the fixed bracket 22 and the bolt 35, which facilitates the adjustment of the height of the sliding frame 36, avoids excessive heat radiation concentration in the high-temperature zone 25, and delays the oxidation of the carbon fiber infrared heating plate 32 surface.

[0032] Furthermore, the fixed bracket 22 and the bottom of the sliding frame 36 are provided with honeycomb holes. The carbon fiber infrared heating plate 32 is evenly distributed inside the sliding frame 36 and is set at the top of the three areas of high temperature zone 25, medium temperature zone 26 and low temperature zone 27. The damaged carbon fiber infrared heating plate 32 can be quickly replaced without disassembling the entire heating module, which facilitates the replacement operation.

[0033] In actual operation, when this device is used, the temperature of the carbon fiber infrared heating plate 32 is first controlled by the control panel 5, so that the temperature of the high temperature zone 25 is controlled at 200℃, the temperature inside the medium temperature zone 26 is controlled at 120℃, and the temperature inside the low temperature zone 27 is controlled at 50℃. After the roll-to-roll calendering operation of the calendering device 4, the copper foil is directly conveyed through the outlet of the calendering device 4 to the inside of the feed roller 21 of the feed inlet of the segmented heating box 1. The copper foil is conveyed through the feed roller 21. When the copper foil passes through the partition curtain 23, the partition curtain 23 deforms, so that the copper foil can be conveyed to the high temperature zone 25. The conveying operation continues on the top of the conveying roller 24, so that the copper foil can pass through the three zones of high temperature zone 25, medium temperature zone 26 and low temperature zone 27 in sequence, and enter the subsequent online spraying operation of composite coating.

[0034] Before performing zoned annealing on the copper foil, bolt 7 can be removed and cover plate 6 can be taken off. Depending on the thickness of the copper foil, the height of sliding frame 36 can be adjusted by threading bolt 35 into different vertical thread grooves inside the fixed bracket 22, thereby controlling the distance between carbon fiber infrared heating plate 32 and copper foil. If carbon fiber infrared heating plate 32 is damaged, it can be removed and replaced by removing bolt 2 34 and pulling handle 33. The modular carbon fiber infrared heating plate 32 allows for replacement during equipment operation, so that the production line does not need to be stopped.

[0035] It should be noted that when the copper foil enters the high-temperature zone 25, the recrystallization temperature of copper alloy (approximately 180-220℃) is utilized to quickly activate lattice dislocation migration, eliminate lattice distortion caused by cold rolling, and restore the material's plasticity. When the copper foil enters the medium-temperature zone 26, the residual stress is released evenly through slow cooling to avoid secondary stress concentration caused by sudden cooling. When the copper foil enters the low-temperature zone 27, a pre-stabilization stage is performed before cooling to room temperature to balance the temperature difference between the material's interior and surface, improving ductility. The cold rolling stress is released in stages through gradient annealing (200℃ → 120℃ → 50℃), significantly reducing the risk of bending cracks.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A roll-to-roll calendering device for copper alloy heating films, comprising a segmented heating box (1), characterized in that: The segmented heating box (1) is equipped with a calendering device (4) on the right side, and a control panel (5) is fixedly installed on the left side of the calendering device (4). The segmented heating box (1) is equipped with a partitioning mechanism (2) and an adjustment mechanism (3). The segmented heating box (1) is equipped with a cover plate (6) on the top. The segmented heating box (1) and the cover plate (6) are fixedly installed by bolts (7).

2. The roll-to-roll calendering apparatus for copper alloy heating films according to claim 1, characterized in that: The partitioning mechanism (2) includes a feed roller (21), which is rotatably installed at the feed inlet on the right side of the segmented heating box (1). A fixed bracket (22) is fixedly installed inside the segmented heating box (1), and a curtain (23) is fixedly installed at the bottom of the fixed bracket (22). A high temperature zone (25), a medium temperature zone (26), and a low temperature zone (27) are set inside the segmented heating box (1).

3. The roll-to-roll calendering apparatus for copper alloy heating films according to claim 2, characterized in that: The right inlet of the segmented heating box (1) corresponds to the left outlet of the calendering device (4).

4. A roll-to-roll calendering apparatus for copper alloy heating films according to claim 2, characterized in that: Four sets of partition curtains (23) are arranged linearly at the bottom of the fixed bracket (22), which divide the interior of the segmented heating box (1) into three areas: high temperature zone (25), medium temperature zone (26) and low temperature zone (27). The three areas are arranged from right to left. Three sets of conveyor rollers (24) are arranged in the three areas respectively.

5. A roll-to-roll calendering apparatus for copper alloy heating films according to claim 2, characterized in that: The adjustment mechanism (3) includes a sliding frame (36), a honeycomb base plate (31) is fixedly installed at the bottom of the sliding frame (36), a carbon fiber infrared heating plate (32) is slidably installed inside the sliding frame (36), a handle (33) is fixedly installed at the top of the carbon fiber infrared heating plate (32), the sliding frame (36) and the carbon fiber infrared heating plate (32) are fixedly installed by bolt two (34), and the fixed bracket (22) and the sliding frame (36) are fixedly installed by bolt three (35).

6. A roll-to-roll calendering apparatus for copper alloy heating films according to claim 5, characterized in that: The fixed bracket (22) and the sliding frame (36) are provided with a sliding groove at the corresponding positions, and the sliding frame (36) is slidably installed inside the sliding groove. The fixed bracket (22) and the bolt three (35) are provided with multiple sets of threaded grooves in the vertical direction at the corresponding positions.

7. A roll-to-roll calendering apparatus for copper alloy heating films according to claim 5, characterized in that: The fixed bracket (22) and the sliding frame (36) are provided with honeycomb holes at the corresponding positions at the bottom. The carbon fiber infrared heating plate (32) is evenly arranged inside the sliding frame (36) and is set at the top of the three areas: high temperature zone (25), medium temperature zone (26) and low temperature zone (27).

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