Coil caching transmission mechanism and coating equipment
By dynamically buffering and adjusting the tension of the roll material buffer transmission mechanism, the problems of speed difference and tension fluctuation in roll material transmission are solved, improving space utilization and stability, and optimizing the process quality and production line switching efficiency of the coating equipment.
Patent Information
- Application Number
- CN202520668076.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-10
AI Technical Summary
Existing roll material transmission mechanisms lack effective means to deal with speed differences between upstream and downstream processes, which may cause the roll material to wrinkle or break. They also have low space utilization efficiency, are difficult to meet the needs of long-term belt splicing or equipment maintenance, have difficulty controlling tension fluctuations, and have poor stability and adaptability.
The roll-to-roll buffer transmission mechanism is adopted, which forms a variable-length buffer zone through the vertical relative movement of the moving module and the fixed module. Dynamic buffering adjustment is achieved by using staggered roller groups. The elastically connected roller groups automatically compensate for tension fluctuations to ensure tension stability. Speed decoupling and dynamic adjustment are achieved by integrating it into the coating equipment.
It significantly improves space utilization, optimizes the stability and adaptability of roll-to-roll transmission, reduces downtime for the entire production line, enhances process quality and production line switching efficiency, reduces coating thickness unevenness defects, and supports rapid switching between different coating processes.
Smart Images
Figure CN223920702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery production equipment technology, and in particular to a roll material buffer transmission mechanism and coating equipment. Background Technology
[0002] In industrial production, foil winding is a common and important step. However, many problems often arise during the actual foil winding process. For example, during the splicing operation, brief pauses or unstable connections during foil connection, or machine malfunctions during operation, can all lead to speed differences in the foil transmission.
[0003] Currently, in the field of roll material conveying, traditional roll material drive mechanisms lack effective means to address the speed difference between upstream and downstream processes. When a speed difference occurs, the roll material may experience wrinkles, breakage, and other problems due to tension variations, severely impacting product quality and production efficiency. Furthermore, existing roll material drive mechanisms are inefficient in terms of space utilization, struggling to accommodate long roll material paths within limited space, and failing to meet the needs for roll material buffering during extended conveying or equipment maintenance. Simultaneously, tension fluctuations are difficult to control effectively during roll material transport, leading to roll material deviation and resulting in poor stability and adaptability of the entire drive mechanism. Utility Model Content
[0004] The purpose of this invention is to provide a roll material buffer transmission mechanism and coating equipment to solve the problem of speed difference before and after foil transmission, and to have dynamic buffer adjustment capability to maintain tension stability during the roll material buffer transmission process.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A roll material buffer drive mechanism for conveying roll material includes a fixed module and a movable module. The movable module can move closer to or further away from the fixed module in a vertical direction. The fixed module includes a support structure and at least two first roller groups. The first roller groups are elastically connected to the support structure and can move vertically relative to the support structure. Each first roller group includes a first buffer roller that can rotate around its own axis. The movable module includes a movable frame and a second roller group. The number of second roller groups is the same as the number of first roller groups, and they correspond one-to-one. The second roller groups are elastically connected to the movable frame and can move vertically relative to the movable frame. Each second roller group includes a second buffer roller that can rotate around its own axis. In a plane perpendicular to the vertical direction, the projections of the first buffer rollers and the second buffer rollers are staggered. The axis of the first buffer roller is parallel to the axis of the second buffer roller, and both are perpendicular to the vertical direction.
[0007] As an optional technical solution for the roll material buffer transmission mechanism, the first roller group further includes two first sliding blocks and two first elastic elements. The two ends of the first buffer roller are respectively rotatably connected to the two first sliding blocks. Each first sliding block is elastically connected to the support structure through a first elastic element. The first elastic element is used to drive the first sliding block to move in the vertical direction. And / or, the second roller group further includes two second sliding blocks and two second elastic elements. The two ends of the second buffer roller are respectively rotatably connected to the two second sliding blocks. Each second sliding block is elastically connected to the movable frame through a second elastic element. The second elastic element is used to drive the second sliding block to move in the vertical direction.
[0008] As an optional technical solution for the roll material buffer transmission mechanism, the support structure has a first sliding elongated hole extending vertically, the number of the first sliding elongated holes being the same as the number of the first sliding blocks, each of the first sliding elongated holes containing a first sliding block and a first elastic element, the first sliding block slidingly engaging with the first sliding elongated hole; and / or, the movable frame has a second sliding elongated hole extending vertically, the number of the second sliding elongated holes being the same as the number of the second sliding blocks, each of the second sliding elongated holes containing a second sliding block and a second elastic element, the second sliding block slidingly engaging with the second sliding elongated hole.
[0009] As an optional technical solution for the roll material buffer transmission mechanism, the first elastic element is a telescopic spring; and / or, the second elastic element is a telescopic spring.
[0010] As an optional technical solution for the roll material buffer transmission mechanism, a drive structure is fixedly connected to the support structure, and a lead screw extending vertically is coaxially fixedly connected to the output end of the drive structure. A nut is fixedly connected to the movable frame, and the lead screw and the nut are in a transmission cooperation to drive the movable module to move vertically.
[0011] As an optional technical solution for the roll material buffer transmission mechanism, the movable frame includes two transmission side plates, each with at least two transmission chains. Both ends of the transmission chains are fixed to the transmission side plates. The length direction of the transmission side plates is parallel to the axis of the second buffer roller. The support structure has four rotating brackets, each capable of rotating around its own axis. The axis of the rotating bracket is parallel to the axis of the first buffer roller. Every two rotating brackets correspond to one transmission side plate, and the transmission chains are in transmission cooperation with the rotating brackets.
[0012] As an optional technical solution for the roll material buffer transmission mechanism, the movable frame further includes two connecting side plates. The two ends of the second buffer roller are respectively rotatably connected to the two connecting side plates, and the two connecting side plates and the two transmission side plates form a rectangular frame.
[0013] As an optional technical solution for the roll material buffer transmission mechanism, the support structure includes at least one vertical rod extending in a vertical direction, the vertical rod is provided with a guide rail extending in a vertical direction, the movable frame is provided with a sliding groove, the number of sliding grooves is the same as the number of vertical rods, and each guide rail is slidably engaged with one sliding groove.
[0014] As an optional technical solution for the roll material buffer transmission mechanism, the support structure is provided with a first pressure sensor, which is used to measure the force on all the first buffer rollers; and / or, the movable frame is provided with a second pressure sensor, which is used to measure the force on all the second buffer rollers.
[0015] The coating equipment includes an unwinding mechanism, a coating mechanism, a drying mechanism, a rewinding mechanism, and the aforementioned roll material buffer transmission mechanism. The unwinding mechanism, the roll material buffer transmission mechanism, the coating mechanism, the drying mechanism, and the rewinding mechanism are arranged sequentially along the working direction. The unwinding mechanism is used to output the roll material to the roll material buffer transmission mechanism. The coating mechanism is used to apply a slurry to the roll material output by the roll material buffer transmission mechanism. The drying mechanism is used to dry the slurry on the roll material. The rewinding mechanism is used to rewind the roll material output from the drying mechanism.
[0016] The beneficial effects of this utility model are:
[0017] This roll material buffer drive mechanism forms a variable-length roll material buffer zone through the vertical relative movement of the movable and fixed modules. This allows for flexible adjustment of the roll material storage path length, thereby buffering the speed difference between upstream and downstream processes and actively compensating for the speed difference between upstream and downstream sections, thus possessing dynamic buffering and adjustment capabilities. The first and second buffer rollers are arranged in an alternating pattern, causing the roll material to form an "S"-shaped winding path in the buffer zone. This significantly extends the roll material's folding path within the mechanism, increases the effective buffer length per unit volume, and allows for more roll material paths to be accommodated per unit volume. With the same vertical movement distance, a greater buffer length can be provided, effectively addressing the needs of long-term splicing or equipment maintenance, improving space utilization, and optimizing the staggered roller group layout. The design of the first roller group being elastically connected to the support structure and the second roller group being elastically connected to the movable frame can automatically compensate for tension fluctuations during the roll material transmission process, thereby more accurately controlling the multi-dimensional forces during the roll material's movement and maintaining the overall tension stability of the roll material buffer transmission mechanism. The design of the roller group moving in the vertical direction is used to ensure the accuracy of the roller group's movement trajectory and avoid the roll material from deviating due to mechanical vibration, thus enhancing stability and adaptability through elastic connection.
[0018] This coating equipment integrates the roll-to-roll buffer drive mechanism into the coating workflow, forming an intelligent process node. This decouples the speeds of unwinding, coating, drying, and rewinding processes, improving the overall line speed matching accuracy. This integrated optimization of the process chain significantly reduces downtime during splicing or malfunctions, offering advantages for production line integration. The roll-to-roll buffer drive mechanism is interlocked with upstream and downstream equipment. When the drying mechanism malfunctions, it automatically increases the buffer capacity and reduces speed, dynamically adjusting the mechanism to reduce energy consumption fluctuations and avoid energy waste. This forms an energy efficiency management system, preventing foil melting caused by sudden stops during high-speed coating operation, thus achieving coordinated control throughout the entire process. Furthermore, stable foil delivery ensures coating uniformity, reducing uneven coating thickness caused by tension fluctuations and improving process quality. Simultaneously, adjusting the buffer capacity compensates for process changeover time, supporting rapid switching between different coating processes and improving production line changeover efficiency and process flexibility. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the roll material buffer transmission mechanism provided in this embodiment of the utility model;
[0020] Figure 2 yes Figure 1 A magnified view of part A in the image;
[0021] Figure 3 This is a cross-sectional view of the roll material buffer transmission mechanism provided in this embodiment of the utility model.
[0022] In the picture:
[0023] 100. Support structure; 101. First sliding elongated hole; 110. Vertical rod; 111. Guide rail; 120. First buffer roller; 130. Rotating support; 140. First pressure sensor; 150. Drive structure; 160. First sliding block; 170. First elastic element;
[0024] 200. Movable frame; 201. Connecting side plate; 202. Transmission side plate; 220. Second buffer roller; 230. Transmission chain; 240. Second pressure sensor;
[0025] 900. Roll material. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0030] like Figures 1 to 3 As shown, this embodiment provides a roll material buffer transmission mechanism for conveying roll material 900. The roll material buffer transmission mechanism includes a fixed module and a movable module. The movable module can move closer to or further away from the fixed module in a vertical direction. The fixed module includes a support structure 100 and at least two first roller groups. The first roller groups are elastically connected to the support structure 100 and can move vertically relative to the support structure 100. The first roller groups include a first buffer roller 120, which can rotate around its own axis. The movable module includes a movable frame 20. The first and second roller groups are the same number and correspond one-to-one with the first roller groups. The second roller groups are elastically connected to the movable frame 200 and can move vertically relative to the movable frame 200. The second roller group includes a second buffer roller 220, which can rotate around its own axis. In a plane perpendicular to the vertical direction, the projections of the first buffer roller 120 and the second buffer roller 220 are arranged alternately. The axis of the first buffer roller 120 is parallel to the axis of the second buffer roller 220, and both are perpendicular to the vertical direction.
[0031] This roll material buffer transmission mechanism forms a variable-length roll material 900 buffer area through the vertical relative movement of the movable and fixed modules. This allows for flexible adjustment of the roll material 900 storage path length, thereby buffering the speed difference between upstream and downstream processes and actively compensating for the speed difference between upstream and downstream sections, thus possessing dynamic buffering and adjustment capabilities. The first buffer roller 120 and the second buffer roller 220 are arranged in an alternating projection, causing the roll material 900 to form an "S"-shaped winding path in the buffer area. This significantly extends the roll material 900's folding path within the mechanism, increases the effective buffer length per unit volume, and allows for more roll material 900 paths to be accommodated per unit volume. With the same vertical movement distance, a greater buffer length can be provided, effectively addressing the needs of long-term roll splicing or equipment maintenance, improving space utilization, and optimizing the staggered roller group layout. The design of the first roller group being elastically connected to the support structure 100 and the second roller group being elastically connected to the movable frame 200 can automatically compensate for tension fluctuations during the transmission of the roll 900, thereby more accurately controlling the multi-dimensional forces during the movement of the roll 900 and maintaining the overall tension stability of the roll buffer transmission mechanism. The design of the roller group moving in the vertical direction is used to ensure the accuracy of the roller group's movement trajectory and avoid the roll 900 from deviating due to mechanical vibration, thereby enhancing stability and adaptability through elastic connection.
[0032] In this embodiment, the roll material 900 is taken as a foil material.
[0033] In this embodiment, there are eight of each of the first buffer roller 120 and the second buffer roller 220. In other embodiments of this embodiment, the number of the first buffer roller 120 and the second buffer roller 220 can be adjusted according to the length of the foil, typically from two to twenty.
[0034] In one embodiment of this invention, the first roller group further includes two first sliding blocks 160 and two first elastic elements 170. The two ends of the first buffer roller 120 are rotatably connected to the two first sliding blocks 160 respectively. Each first sliding block 160 is elastically connected to the support structure 100 through a first elastic element 170. The first elastic element 170 is used to drive the first sliding block 160 to move in the vertical direction. The second roller group further includes two second sliding blocks and two second elastic elements. The two ends of the second buffer roller 220 are rotatably connected to the two second sliding blocks respectively. Each second sliding block is elastically connected to the movable frame 200 through a second elastic element. The second elastic element is used to drive the second sliding block to move in the vertical direction.
[0035] By combining sliding blocks and elastic elements, each roller group can independently respond to local tension changes in the foil, enabling dynamic tension self-adjustment. When the tension on one side of the foil changes, the elastic elements automatically balance the force distribution of adjacent roller groups, causing the corresponding sliding block to compress the elastic element and move, achieving precise vertical displacement of the roller group. This automatically releases stress, preventing excessive stretching or breakage of the material and ensuring positional consistency when multiple roller groups move synchronously. It possesses a dynamic balancing mechanism and achieves precise sliding adjustment. The aforementioned elastic elements provide self-weight balance for the roller groups and generate a reverse force when the foil tension changes, forming a dual buffer protection mechanism (active and passive). Furthermore, the separate elastic design of the first and second roller groups allows for individual replacement of damaged sliding blocks or elastic elements without disassembling the entire roller group. These improvements offer modular maintenance advantages, helping to shorten maintenance time and improve the availability of the roll-to-roll buffer drive mechanism.
[0036] In another embodiment of this invention, only two first sliding blocks 160 and two first elastic members 170 are defined; in yet another embodiment of this invention, only two second sliding blocks and two elastic members are defined.
[0037] In one embodiment of this invention, the support structure 100 has a first sliding elongated hole 101 extending vertically. The number of first sliding elongated holes 101 is the same as the number of first sliding blocks 160. Each first sliding elongated hole 101 contains a first sliding block 160 and a first elastic element 170. The first sliding block 160 slides in engagement with the first sliding elongated hole 101. The movable frame 200 has a second sliding elongated hole extending vertically. The number of second sliding elongated holes is the same as the number of second sliding blocks. Each second sliding elongated hole contains a second sliding block and a second elastic element. The second sliding block slides in engagement with the second sliding elongated hole.
[0038] By utilizing the cooperation of the sliding elongated hole and the sliding block, the error in the movement trajectory of the roller assembly is reduced, enabling precise guidance. The sliding elongated hole structure provides a rigid guide track, preventing horizontal deviation of the roller assembly during movement and ensuring the linear accuracy of vertical movement, thus enhancing guiding stability. The elastic element provides preload, ensuring that the sliding block maintains appropriate contact pressure with the wall of the sliding elongated hole. This avoids wear caused by rigid contact and prevents vibration and noise caused by excessive clearance, thereby extending the service life of the sliding structure and providing a wear protection mechanism. These improvements ensure sufficient buffer stroke while preventing excessive displacement that could lead to mechanical interference, enhancing the safety of the roll material buffer transmission mechanism and achieving precise displacement constraint design.
[0039] Specifically, the inner wall of the elongated hole is coated with polytetrafluoroethylene (PTFE). The PTFE coating reduces the coefficient of friction of the sliding block, and together with the preload of the elastic element, achieves energy-saving effects by reducing energy consumption.
[0040] In another embodiment of this invention, only the first sliding elongated hole 101 is defined; in yet another embodiment of this invention, only the second sliding elongated hole is defined.
[0041] In one embodiment of this invention, the first elastic element 170 is a telescopic spring; the second elastic element is a telescopic spring.
[0042] Using a telescopic spring as the elastic element provides an elastic force proportional to the displacement, ensuring linear tension adjustment and facilitating the establishment of an accurate tension-displacement mathematical model for automated control. Compared to asymmetric elastic elements, it exhibits lower tension fluctuation amplitude, making it particularly suitable for processing ultra-thin foil materials. Furthermore, the stiffness coefficient of the telescopic spring varies exponentially, possessing nonlinear stiffness characteristics, enabling a dual protection mechanism of soft buffering for small displacements and hard limiting for large displacements.
[0043] In another embodiment of this invention, only the first elastic element 170 is a telescopic spring; in yet another embodiment of this invention, only the second elastic element is a telescopic spring.
[0044] For example, a drive structure 150 is fixedly connected to the support structure 100, and a lead screw extending in the vertical direction is coaxially fixedly connected to the output end of the drive structure 150. A nut is fixedly connected to the movable frame 200, and the lead screw and nut are in a transmission engagement to drive the movable module to move in the vertical direction.
[0045] The combination of the lead screw and nut pair with the drive structure 150 provides high positioning accuracy. Combined with the high-precision speed adjustment of the servo motor, it forms a precise closed-loop position control, which helps improve the accuracy of speed control. The coaxial drive design of the output end of the drive structure 150 with the lead screw reduces lateral space occupation, which is beneficial for the layout requirements of high-density industrial equipment and helps to achieve a compact spatial layout. At the same time, the lead screw and nut transmission structure has a self-locking characteristic, enabling millimeter-level precise positioning of the moving module. This completely eliminates the risk of the support structure 100 sliding down due to gravity during power failure, avoids buffer failure caused by gravity, forms a self-locking safety guarantee, and achieves precise drive control.
[0046] In this embodiment, the movable frame 200 includes two transmission side plates 202, and at least two transmission chains 230 are provided on the transmission side plates 202. Both ends of the transmission chains 230 are fixed to the transmission side plates 202. The length direction of the transmission side plates 202 is parallel to the axis of the second buffer roller 220. The support structure 100 is provided with four rotating supports 130. The rotating supports 130 can rotate around their own axis, and the axis of the rotating supports 130 is parallel to the axis of the first buffer roller 120. Every two rotating supports 130 correspond to one transmission side plate 202, and the transmission chains 230 are in transmission cooperation with the rotating supports 130.
[0047] The configuration of dual drive chains 230 forms a parallelogram transmission mechanism, enabling the movable frame 200 to move closer to or further away from the support structure 100 in the vertical direction. It also provides redundant power, avoiding the problem of uneven load distribution, improving load uniformity, enhancing system reliability, and achieving evenly distributed power transmission. The aforementioned dual drive chain 230 design allows the roll material buffer transmission mechanism to maintain half of its transmission capacity even if one drive chain 230 fails. The parallel arrangement of at least two drive chains 230 effectively prevents skew and jamming during frame movement, ensuring synchronous movement. Combined with a tension balancing mechanism, it ensures a small difference in lifting speed between the two sides, avoiding jamming caused by frame tilting and achieving multi-chain synchronous transmission. The rotating support 130 supports three-dimensional chain routing, saving longitudinal space compared to traditional linear arrangements, adapting to compact equipment layouts, and possessing expandable transmission capabilities.
[0048] In other embodiments of this example, the transmission side plate 202 is driven by the rotating bracket 130 through other traction structures in the art. The traction structure can be, for example, a roller structure, a linkage structure, or a track structure. The specific traction structure is selected by those skilled in the art based on the actual engineering situation. The specific structure and transmission method of the traction structure are common knowledge in the art and will not be described in detail here.
[0049] Furthermore, the movable frame 200 also includes two connecting side plates 201, and the two ends of the second buffer roller 220 are rotatably connected to the two connecting side plates 201 respectively. The two connecting side plates 201 and the two transmission side plates 202 are arranged to form a rectangular frame.
[0050] The rectangular frame structure forms a stable load-bearing framework, increasing the torsional stiffness of the movable frame 200. This ensures minimal deformation of the movable frame 200 during synchronous movement of the multi-roller group, enhancing its rigidity and guaranteeing the overall structural strength during coordinated movement of the multi-roller group. These improvements also create a closed force flow path, allowing the natural frequency of the movable frame 200 to avoid the equipment's operating frequency band, thus reducing the risk of resonance.
[0051] In this embodiment, the support structure 100 includes at least one vertical rod 110 extending in a vertical direction. The vertical rod 110 is provided with a guide rail 111 extending in a vertical direction. The movable frame 200 is provided with a sliding groove. The number of sliding grooves is the same as that of the vertical rod 110. Each guide rail 111 is slidably engaged with one sliding groove.
[0052] The design of the guide rail 111 being directly integrated into the vertical rod 110 reduces the number of independent support structures, lowers manufacturing costs and installation complexity, and facilitates integrated installation. Simultaneously, the guide rail 111, in conjunction with the slide rail structure, forms a guiding mechanism, improving lateral positioning accuracy and resistance to lateral impacts.
[0053] Specifically, the support structure 100 is cuboid in shape, with four vertical rods 110 located at the four corners of the support structure 100. Guide rails 111 on the four vertical rods 110 are respectively located at the two ends of the two connecting side plates 201 near the two transmission side plates 202. The arrangement of the four guide rails 111 creates spatial constraints, eliminates the torsional moment of the movable frame 200, and ensures the absolute linearity of vertical movement.
[0054] In one embodiment of this example, a first pressure sensor 140 is provided on the support structure 100, which is used to measure the force on all the first buffer rollers 120; a second pressure sensor 240 is provided on the movable frame 200, which is used to measure the force on all the second buffer rollers 220.
[0055] Pressure sensors are used to detect the stress state of the corresponding roller group in real time. When abnormal tension is detected, a signal is immediately triggered to remind the operator to make adjustments, providing early warnings of faults such as belt breakage and abnormal winding, enabling predictive maintenance and intelligent monitoring and early warning, thereby reducing the belt breakage accident rate and achieving intelligent tension monitoring. Moreover, the pressure sensor provides a feedback signal source for the automatic adjustment system, allowing the buffer amount to be dynamically optimized according to real-time tension changes, which helps to achieve closed-loop control.
[0056] In another embodiment of this invention, only the first pressure sensor 140 is provided; in yet another embodiment of this invention, only the second pressure sensor 240 is provided.
[0057] This embodiment also provides a coating device, including an unwinding mechanism, a coating mechanism, a drying mechanism, a winding mechanism, and the aforementioned roll material buffer transmission mechanism. The unwinding mechanism, the roll material buffer transmission mechanism, the coating mechanism, the drying mechanism, and the winding mechanism are arranged sequentially along the working direction. The unwinding mechanism is used to output the roll material 900 to the roll material buffer transmission mechanism. The coating mechanism is used to apply slurry to the roll material 900 output by the roll material buffer transmission mechanism. The drying mechanism is used to dry the slurry on the roll material 900. The winding mechanism is used to wind up the roll material 900 output from the drying mechanism.
[0058] This coating equipment integrates the roll-to-roll buffer drive mechanism into the coating workflow, forming an intelligent process node. This decouples the speeds of unwinding, coating, drying, and rewinding processes, improving the overall line speed matching accuracy. This integrated optimization of the process chain significantly reduces downtime during splicing or malfunctions, offering advantages for production line integration. The roll-to-roll buffer drive mechanism is interlocked with upstream and downstream equipment. When the drying mechanism malfunctions, it automatically increases the buffer capacity and reduces speed, dynamically adjusting the mechanism to reduce energy consumption fluctuations and avoid energy waste. This forms an energy efficiency management system, preventing foil melting caused by sudden stops during high-speed coating operation, thus achieving coordinated control throughout the entire process. Furthermore, stable foil delivery ensures coating uniformity, reducing uneven coating thickness caused by tension fluctuations and improving process quality. Simultaneously, adjusting the buffer capacity compensates for process changeover time, supporting rapid switching between different coating processes and improving production line changeover efficiency and process flexibility.
[0059] When the speed of the downstream winding mechanism changes, the distance between the first and second roller groups can be increased or decreased by moving the active module closer to or further away from the fixed module. This dynamically absorbs or releases the roll material 900, forming a temporary buffer zone to avoid sudden tension changes caused by speed differences. This allows the upstream unwinding mechanism to continue feeding the roll material 900, thereby avoiding material waste caused by sudden stops of the coating equipment and achieving dynamic speed difference compensation.
[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A web buffer drive mechanism for conveying a web (900), characterized by, The roll material buffer transmission mechanism comprises a fixed module and a movable module, the movable module can be close to or away from the fixed module along the vertical direction, the fixed module comprises a support structure (100) and at least two first roller groups, the first roller groups are elastically connected to the support structure (100), the first roller groups can move along the vertical direction relative to the support structure (100), the first roller groups comprise first buffer rollers (120), the first buffer rollers (120) can rotate around their own axes; the movable module comprises a movable frame (200) and second roller groups, the second roller groups are the same in number as the first roller groups and one-to-one corresponding, the second roller groups are elastically connected to the movable frame (200), the second roller groups can move along the vertical direction relative to the movable frame (200), the second roller groups comprise second buffer rollers (220), the second buffer rollers (220) can rotate around their own axes; in the plane perpendicular to the vertical direction, the projection of the first buffer roller (120) and the projection of the second buffer roller (220) are staggered; the axis of the first buffer roller (120) is parallel to the axis of the second buffer roller (220), and both are perpendicular to the vertical direction.
2. The web buffer drive mechanism of claim 1 wherein, The first roller group further comprises two first sliding blocks (160) and two first elastic members (170), both ends of the first buffer roller (120) are rotatably connected to two first sliding blocks (160) respectively, each first sliding block (160) is elastically connected to the support structure (100) through a first elastic member (170), and the first elastic member (170) is used for driving the first sliding block (160) to move along the vertical direction; and / or, The second roller group further comprises two second sliding blocks and two second elastic members, both ends of the second buffer roller (220) are rotatably connected to two second sliding blocks respectively, each second sliding block is elastically connected to the movable frame (200) through a second elastic member, and the second elastic member is used for driving the second sliding block to move along the vertical direction.
3. The web buffer drive mechanism of claim 2 wherein, The support structure (100) is provided with a first sliding elongated hole (101) extending along the vertical direction, the number of the first sliding elongated holes (101) is the same as that of the first sliding blocks (160), one first sliding block (160) and one first elastic member (170) are arranged in each first sliding elongated hole (101), and the first sliding block (160) is in sliding fit with the first sliding elongated hole (101); and / or, The movable frame (200) is provided with a second sliding elongated hole extending along the vertical direction, the number of the second sliding elongated holes is the same as that of the second sliding blocks, one second sliding block and one second elastic member are arranged in each second sliding elongated hole, and the second sliding block is in sliding fit with the second sliding elongated hole.
4. The web buffer drive mechanism of claim 2 wherein, The first elastic member (170) is a telescopic spring; and / or, The second elastic member is a telescopic spring.
5. The web buffer drive mechanism of claim 1 wherein, A drive structure (150) is fixedly connected to the support structure (100). A lead screw extending in the vertical direction is coaxially fixed to the output end of the drive structure (150). A nut is fixedly connected to the movable frame (200). The lead screw and the nut are in a transmission cooperation to drive the movable module to move in the vertical direction.
6. The web buffer drive mechanism of claim 1 wherein, The movable frame (200) includes two transmission side plates (202), and at least two transmission chains (230) are provided on the transmission side plates (202). Both ends of the transmission chains (230) are fixed to the transmission side plates (202). The length direction of the transmission side plates (202) is parallel to the axis of the second buffer roller (220). The support structure (100) is provided with four rotating supports (130). The rotating supports (130) can rotate around their own axis, and the axis of the rotating supports (130) is parallel to the axis of the first buffer roller (120). Every two rotating supports (130) correspond to one transmission side plate (202), and the transmission chains (230) are in transmission cooperation with the rotating supports (130).
7. The web buffer drive mechanism of claim 6 wherein, The movable frame (200) also includes two connecting side plates (201), and the two ends of the second buffer roller (220) are rotatably connected to the two connecting side plates (201) respectively. The two connecting side plates (201) and the two transmission side plates (202) are arranged to form a rectangular frame.
8. The web buffer drive mechanism of claim 1 wherein, The support structure (100) includes at least one vertical rod (110) extending in a vertical direction. The vertical rod (110) is provided with a guide rail (111) extending in a vertical direction. The movable frame (200) is provided with a sliding groove. The number of sliding grooves is the same as that of the vertical rod (110). Each guide rail (111) is slidably engaged with one of the sliding grooves.
9. The roll buffer drive mechanism of any of claims 1-8, wherein, The support structure (100) is equipped with a first pressure sensor (140), which is used to determine the force on all the first buffer rollers (120); and / or, The movable frame (200) is provided with a second pressure sensor (240), which is used to measure the force on all the second buffer rollers (220).
10. Coating apparatus, characterized in that The device includes an unwinding mechanism, a coating mechanism, a drying mechanism, a rewinding mechanism, and a roll material buffer transmission mechanism as described in any one of claims 1-9. The unwinding mechanism, the roll material buffer transmission mechanism, the coating mechanism, the drying mechanism, and the rewinding mechanism are arranged sequentially along the working direction. The unwinding mechanism is used to output the roll material (900) to the roll material buffer transmission mechanism. The coating mechanism is used to apply a slurry to the roll material (900) output from the roll material buffer transmission mechanism. The drying mechanism is used to dry the slurry on the roll material (900). The rewinding mechanism is used to rewind the roll material (900) output from the drying mechanism.