EP4731552A1

EP4731552A1 - Substrate conveying system and coating system implementing the substrate conveying system

Info

Publication number: EP4731552A1
Application number: EP24738199.9A
Authority: EP
Inventors: Peter Qiu; Kevin Jiang; Neil Ren; Mikky Shao
Original assignee: Nordson Corp
Current assignee: Nordson Corp
Priority date: 2023-06-20
Filing date: 2024-06-18
Publication date: 2026-04-29
Also published as: WO2024263538A1; KR20260025366A; CN220537118U

Abstract

A substrate conveying system includes a driving roller (1) that can drive a substrate (S) to move in a substrate conveying direction; a first set of auxiliary rollers (2, 3) that includes a first roller (2) and a second roller (3); a second set of auxiliary rollers (7, 10) that includes a third roller (10) and a fourth roller (7); a buffering dual-roller component (6) that includes a first buffering roller (61) and a second buffering roller (62). Additionally, the buffering dual-roller component (6) can move relative to an original position, so that a part of the substrate (S) between the first roller (2) and the fourth roller (7) can move back and forth in the substrate conveying direction.

Description

SUBSTRATE CONVEYING SYSTEM AND COATING SYSTEM IMPLEMENTING THE SUBSTRATE CONVEYING SYSTEM

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001 ] This application claims the benefit of Chinese Patent Application No.

202321583388.3 filed on June 20, 2022, which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein.

FIELD OF THE DISCLOSURE

[0002] The disclosure relates to a substrate conveying system and a coating system implementing the substrate conveying system.

BACKGROUND OF THE DISCLOSURE

[0003] Electric vehicles are a developmental direction of current automobile technology. In this regard, endurance or range is typically an important parameter to characterize a performance of electric vehicles. The range of an electric vehicle depends in part on the performance of electric vehicle (EV) batteries.

[0004] In this regard EV battery manufacturing typically includes utilizing slitting/rolling machines. More specifically, slitting/rolling machines are typically used for positive and negative electrode manufacturing of electric vehicle batteries and typically have high line speed (up to 100 m/min (meters per minute)) or higher. Moreover, hot melt adhesive coating has replaced the insulation protection process and must operate at a commensurate speed.

[0005] In terms of the effectiveness and inherent characteristics of electrode substrate formed by laser cutting, a thickness of a glue conveyed is typically required to be approximately 10-20 urn (microns). Exceeding this specified range is not allowed. The start-stop connection section also needs to meet the requirements. As far as the quality of a glue pattern and/or glue patterns is concerned, the electrode substrate must be glued evenly and consistently. In this regard, glue leakage and coating defects are not allowed. According to the strict regulations of electrode manufacturing, there is zero tolerance for exposing a metal that should be coated with glue to the atmosphere. In addition, hammer joint coating failure should be avoided.

[0006] By using a high-precision metering pump (VCP) and other auxiliary equipment, the glue pattern and/or the glue patterns that meet customer specifications can be continuously applied. However, in the course of operation, a start-stop operation is unavoidable. The glue pattern in the start-stop connection section is affected by factors such as wait time, adhesive viscosity, tension of the material roll, momentary changes in the state of a shut-off valve, and/or the like. Accordingly, achieving a thickness of 10-20 urn in the start-stop connection section without coating defects, such as leaking glue, requires addressing and/or adjustment of many complex parameters and systems, and thus is a challenge.

[0007] There is known a method of retracting the substrate before restarting the coating system to improve the start-stop performance of the system, wherein the motor conveying the substrate is reversed to retract the substrate. Thereafter, on the retracted section of the substrate, applying a secondary coating on a top of the substrate. However, this method involves the operation of almost the entire substrate conveying system, which results in accelerating equipment aging and increasing energy consumption. At present, researchers have made many attempts to improve the startstop performance of the system, but there is still a slight gap between the start-stop performance and the requirements.

[0008] Thus, there is a need for improvements in the start-stop coating performance of coating systems.

SUMMARY OF THE DISCLOSURE

[0009] In one aspect, a substrate conveying system includes a driving roller configured to drive a substrate and to move the substrate in a substrate conveying direction. The substrate conveying system in addition includes a first set of auxiliary rollers that comprise a first roller and a second roller, and the first set of auxiliary rollers are located downstream of the driving roller in the substrate conveying direction. The substrate conveying system moreover includes a second set of auxiliary rollers that comprise a third roller and a fourth roller, and the second set of auxiliary rollers are located downstream of the first set of auxiliary rollers in the substrate conveying direction. The substrate conveying system also includes a buffering dual-roller component that comprises a first buffering roller and a second buffering roller, the first buffering roller being located between the first roller and the second roller of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller and the fourth roller of the second set of auxiliary rollers in the substrate conveying direction. The substrate conveying system further includes where the buffering dual-roller component is configured to move relative to an original position, so that a part of the substrate between the first roller and the fourth roller can move back and forth in the substrate conveying direction.

[0010] In one aspect, a substrate conveying system includes a driving roller that can drive a substrate to move in a substrate conveying direction. The substrate conveying system in addition includes a first set of auxiliary rollers that includes a first roller and a second roller, and is located downstream of the driving roller in the substrate conveying direction. The substrate conveying system moreover includes a second set of auxiliary rollers that includes a third roller and a fourth roller, and is located downstream of the first set of auxiliary rollers in the substrate conveying direction. The substrate conveying system also includes a buffering dual-roller component that includes a first buffering roller and a second buffering roller, the first buffering roller being located between the first roller and the second roller of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller and the fourth roller of the second set of auxiliary rollers in the substrate conveying direction. The substrate conveying system further includes where the buffering dual-roller component can move relative to an original position, so that a part of the substrate between the first roller and the fourth roller can move back and forth in the substrate conveying direction. [0011 ] Aspects of the disclosure may provide a substrate conveying system, which can apply and/or spray fluid, such as glue, on a start-stop connection section of a substrate with high precision, so as to achieve an extremely thin and glue-free coating. Further, the disclosure also provides a coating system comprising the substrate conveying system.

[0012] According to the disclosure, a substrate conveying system is provided, comprising: a driving roller capable of driving the substrate to move in the substrate conveying direction; a first set of auxiliary rollers, the first set of auxiliary rollers comprising a first roller and a second roller, the first set of auxiliary rollers is located downstream of the driving roller in the substrate conveying direction; a second set of auxiliary rollers, the second set of auxiliary rollers includes a third roller and a fourth roller, the second set of auxiliary rollers is located downstream of the first set of auxiliary rollers in the conveying direction of the substrate; the buffering dual-roller component, the buffering dual-roller component includes a first buffering roller and a second buffering roller, the first buffering roller is located between the first roller and the second roller of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller is positioned between the second set of auxiliary rollers in the substrate conveying direction. Between the third roller and the fourth roller, the buffering dual-roller component is movable relative to the original position, so that the portion of the substrate between the first roller and the fourth roller can move back and forth in the substrate conveying direction.

[0013] In this way, the substrate can be retracted easily and with low energy consumption, and further, the coating device can be used to continuously coat the glue and/or glue pattern that meets the customer’s specification on the start-stop connection section of the substrate. Thereby, it is possible to easily implement a start-stop connection section that meets customer specifications. By overlapping coats at the start and end sections of adjacent coats, the occurrence of missing fluid and/or slippage is eliminated and/or greatly reduced. While simplifying the setting of a large number of parameters, it ensures the convenience of field application. The structure of this substrate conveying system includes a start-stop buffering structure, which is characterized by a simple layout and does not occupy too much installation space. In addition, the reciprocating operation of the buffering dual-roller component ensures the long-term stability of the entire system.

[0014] In aspects, the substrate conveying system includes a lifting member for lifting and lowering the buffering dual-roller component. Thereby, it is possible to automatically control the raising and lowering of the buffering dual-roller component.

[0015] In aspects, the lifting member comprises an electric motor. Thereby, a simple structure can be adopted.

[0016] In aspects, the buffering dual-roller component includes a support through which respective roller shafts of the first buffering roller and the second buffering roller of the buffering dual-roller component are connected to each other. Thereby, the buffering dual-roller component is realized with a simple structure, and the movement of the buffering dual-roller component can be controlled using only one motor.

[0017] In aspects, the buffering dual-roller component is movable in a vertical direction relative to its original position, and optionally the buffering dual-roller component is movable in a horizontal direction relative to its original position. Thereby, moving the buffering dual-roller component is facilitated and system arrangement is facilitated.

[0018] In aspects, the substrate conveying system has a first spool for the substrate and a second spool, the first spool being located upstream of the driving roller in the direction of substrate conveying, and the second spool being positioned at the substrate is located downstream of the fourth roller in the conveying direction of the substrate. Thereby, a complete product can be realized, and it is convenient to improve assembly efficiency.

[0019] According to the disclosure, there is also provided a coating system, including: a coating device; and the aforementioned substrate conveying system, wherein the coating device is located between the second roller of the first set of auxiliary rollers and the third roller of the second set of auxiliary rollers in the substrate conveying direction, and the coating device applies fluid to the substrate as the substrate conveying system conveys the substrate past the coating device.

[0020] In this way, it is possible to continuously apply a glue type and/or a glue pattern to customer specifications on the start-stop connection section of the substrate. Thereby, it is possible to easily implement a start-stop connection section that meets customer specifications. By overlapping coats at the start and end of adjacent coats, the occurrence of missing fluid/glue leaks is eliminated. While simplifying the setting of a large number of parameters, it ensures the convenience of field application. The structure of this substrate conveying system includes a start-stop buffering structure, which is characterized by a simple layout and does not occupy too much installation space. In addition, the reciprocating operation of the buffering dual-roller component ensures the long-term stability of the entire system.

[0021 ] In aspects, the coating device is provided with a nozzle and a hump support bar opposite to each other, and when the substrate is conveyed between the nozzle and the hump support bar, the coating device Coating fluid. Thereby, the substrate under the nozzle can be properly tensioned, thereby improving the coating quality.

[0022] In aspects, the coating system is provided with a metering component in the form of a VCP pump. Thereby, fluid can be dispensed precisely.

[0023] In aspects, the coating system is provided with a tensioning device for tensioning the substrate. Thereby, the substrate can be properly tensioned.

[0024] In aspects, the tensioning device is located between the coating device and the third roller of the second set of auxiliary rollers in the conveying direction of the substrate. Thereby, the substrate can be properly tensioned, especially the retractable portion of the substrate. [0025] In aspects, the coating device is provided with a shut-off valve upstream of a nozzle of the coating device. Thereby, coating hammers can be eliminated.

[0026] The disclosure also includes a method for applying fluid to a substrate using the above-mentioned coating system. The method for applying fluid to a substrate including one or more of the following steps:

[0027] S1 : Start the coating system to convey the substrate and apply fluid to the substrate, then stop the coating system while the nozzle is raised relative to the substrate;

[0028] S2: making the buffering dual-roller component move downwards to retract the substrate by a certain distance;

[0029] S3: The nozzle moves down to squeeze the substrate;

[0030] S4: rotating the driving roller to convey the substrate and causing the coating device to apply the fluid to the substrate, and raising the buffering dual-roller component while the fluid is applied to the substrate; and

[0031 ] S5: stop the coating system, and then repeating steps S2-S5.

[0032] In aspects, in step S4, the coating flow rate of the coating device is gradually increased before the substrate at the distance completely passes through the nozzle.

[0033] There has thus been outlined, rather broadly, certain aspects of the disclosure in order that the detailed description thereof herein may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional aspects of the disclosure that will be described below and which will form the subject matter of the claims appended hereto.

[0034] In this respect, before explaining at least one aspect of the disclosure in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The disclosure is capable of aspects in addition to those described and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting.

[0035] As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the disclosure. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the disclosure.

[0036] These and other objects and advantages of the disclosure will appear more fully from the following description taken in conjunction with the accompanying drawings, wherein the same reference numerals are used throughout the drawings to indicate the same or similar parts, and wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG. 1 is a left front view showing a coating system including a substrate conveying system according to the disclosure; and

[0038] FIG. 2 is a right front view showing a coating system including a substrate conveying system according to the disclosure.

DETAILED DESCRIPTION

[0039] Embodiments according to the disclosure will be described in detail below with reference to the accompanying drawings. In the description of the drawings, the same or corresponding parts are denoted by the same numerals and symbols, and repeated descriptions will be omitted. In the following description, the terms “upper”, “lower”, “front"”, “rear”, “top” and “bottom” (if any) indicating directions are only used to describe the accompanying drawings, and do not constitute a substantial limitation to the disclosure. Other examples may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here. It will be readily understood that aspects of the disclosure, as generally described herein and illustrated in the accompanying drawings, may be arranged, replaced, combined and designed in a variety of different configurations, each of which are expressly contemplated and form part of this disclosure.

[0040] When an element or variations thereof are referred to as being “connected to,” “coupled to,” or “mounted to” another element, it can be directly connected, coupled, or mounted to the other element or intervening elements may be present. , that is, indirectly connected to, coupled to, or mounted to another element. In contrast, when an element or variations thereof are referred to as being “directly connected,” “directly coupled,” or “directly mounted” to another element, there are no intervening elements present. Like reference numerals refer to like elements throughout. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly dictates otherwise. Well-known functions or constructions may not be described in detail for brevity and/or clarity. The term “and/or” and its abbreviation “/” include any and all combinations of one or more of the associated listed items.

[0041 ] FIG. 1 shows a left front view of a coating system including a substrate conveying system according to the disclosure. Note that the direction X in the figure indicates the longitudinal direction or length direction of the coating system, the direction Y indicates the lateral direction or width direction of the coating system, and the direction Z indicates the vertical direction or vertical direction or height of the coating system direction. Note that in this specification, the longitudinal direction, transverse direction and vertical direction of the coating system may be simply referred to as longitudinal direction, transverse direction and vertical direction, respectively.

[0042] As shown in Figure 1 , the coating system may include a driving roller 1 , a first roller 2, a first buffering roller 61 , a second roller 3, a coating device 4, a third roller 10, a second buffering roller 62, a fourth roller 7, and/or the like. These components may be arranged sequentially in the substrate conveying direction of the substrate. The first buffer roller 61 and the second buffering roller 62 may constitute a buffering dualroller component 6. In addition, the coating system may further include a first reel 101 for winding the substrate S, and a second reel 102 for winding the fluid-coated substrate. It will be appreciated that instead of the first and second reels, the coating system may have a support for mounting the first and second reels. When using a coating system, the first reel and the second reel for winding the substrate are only mounted on the corresponding supports of the coating system.

[0043] When the term “roller” is described herein, it generally refers to the corresponding roller component including the roller and its mounting parts, not just the roller itself. Unless otherwise stated, for example, a buffering dual-roller component 6 is described, comprising rollers, corresponding roller shafts and supports.

[0044] The type of coating device 4 is not limited and may be any known type of coating device. The coating device 4 may include a fluid source for containing and/or supplying fluid. The fluid source is for example a cartridge containing the fluid directly or a hose connected to a fluid supply. The cylinder can be cylinders of various specifications, such as cylinders of 300 cc (cubic centimeters), 500 cc, and/or the like. Instead of using a cartridge, a hose or other connecting tube may be used. This hose or other connecting pipe may be directly and/or indirectly connected to another metering system. Hoses can be connected to a melter. A hot fluid such as hot glue may be supplied to the application device 4 through a connection of the melter and the hose or through a direct connection of a glue cartridge. A cartridge or hose as an alternative fluid supply means is very convenient to implement, thereby increasing the adaptability of the coating system to the fluid source.

[0045] In some examples, the fluid may be a glue, such as a polyurethane glue, a thermoplastic hot melt, a pressure sensitive adhesive, or another adhesive with sufficient cohesive strength and “open time” as described herein, However, other materials are also conceivable. The glue can be insulating glue, a conductive glue, and/or the like. Generally, the conductive glue contains conductive substances to facilitate conduction after being coated on the surface of the substrate. Fluids suitable for dispensing are not limited to glue, but can be various other fluid materials in the spraying process.

[0046] The coating device 4 may include a movement control module 5. The movement control module 5 may be used to control the movement of at least the nozzle part of the coating device 4. The coating device 4 may be movable in the horizontal direction and the vertical direction to approach or move away from the substrate S being conveyed. When the substrate S is conveyed through the coating device 4, the coating device 4 may apply a fluid to the substrate.

[0047] In aspects, the coating device 4 may be provided with a hump support bar. The hump support bar may be opposite to the nozzle of the coating device 4. As the substrate S is conveyed between the nozzle and the hump support bar, the coating device 4 may apply fluid to the substrate.

[0048] The coating device 4 may include a metering component, which may be in the form of a volumetric pump (VCP). In this regard, small positive displacement and/or gear pumps may convey extremely small amounts of glue as they rotate tooth by tooth, allowing the fluid outflow rate to be controlled with relatively high precision, conveying very precise quantities. The rotational speed of the metering component may be precisely controlled so that the gear pump may provide a steady outflow flow. With this metering component, fluids may be conveyed accurately and adequately to the substrate. Metering components in the form of gear pumps may play an important role in the preparation of micron-scale coating fluid films, such as adhesive films, and may be an important factor in obtaining micron-scale coating performance.

[0049] The coating device 4 may implement a shut-off valve located upstream of the nozzle in the direction of fluid flow. The shut-off valve may in aspects be a pneumatic shut-off valve. When a valve stem of the shut-off valve abuts against a valve seat in the flow channel, the coating device 4 stops coating the fluid, and then the valve stem moves back thereby sucking back the fluid. In this way, it is possible to effectively eliminate hammerheads which tend to occur when applying the fluid. [0050] In aspects, the coating system may be provided with a tensioning device 9, such as a tensioning wheel, for tensioning the substrate. The tensioning device 9 may be located between the coating device 4 and the third roller 10 of the second set of auxiliary rollers in the conveying direction of the substrate. It can be understood that the specific position of the tensioning device 9 is not limited, as long as it can tension the substrate.

[0051 ] As shown in FIG. 1 , the driving roller 1 may be a roller for driving the substrate S to move in the substrate conveying direction. The rolling rollers may be located at the forefront in the conveying direction of the substrate to directly receive the substrate S from outside the system. When the coating system includes the first reel 101 , the driving roller 1 may receive the substrate S unwound from the first reel 101 . Optionally, according to actual needs, one or more rollers may be installed between the first reel 101 and the driving roller 1 , so as to control the conveying direction of the substrate S.

[0052] The first roller 2 and the second roller 3 may be implemented as auxiliary rolls. The term “auxiliary roller” indicates that the roller is not necessary for the conveyance of the substrate S. The first roller 2 and the second roller 3 may constitute a first set of auxiliary rolls. The third roller 10 and the fourth roller 7 may be auxiliary rolls. The third roller 10 and the fourth roller 7 may constitute a second set of auxiliary rollers. In this application, the main function of the auxiliary roller is to support the buffering dual-roller component 6, which will be described below.

[0053] The buffering dual-roller component 6 in aspects has a one-piece construction. The buffering dual-roller component 6 may be located in the space between the first set of auxiliary rollers and the second set of auxiliary rollers. The buffering dual-roller component 6 may include a first buffering roller 61 and a second buffering roller 62 connected or not connected to each other, and the first buffering roller maybe located between the first roller 2 and the second roller of the first set of auxiliary rollers in the conveying direction of the substrate, and the second buffering roller is located between the third roller 10 and the fourth roller 7 of the second set of auxiliary rollers in the conveying direction of the substrate. The buffering dual-roller component 6 can be configured to move relative to the original position, so that the part of the substrate S between the first roller 2 and the fourth roller 7 can be configured to move back and forth in the substrate conveying direction.

[0054] The first buffering roller 61 and the second buffering roller 62 are mounted on respective roller shafts so as to be rotatable. The buffering dual-roller component 6 further includes a support 63 to support the roller shafts of the first buffering roller 61 and the second buffering roller 62 thereby supporting the first buffering roller 61 and the second buffering roller 62. The support 63 may have a U-shape, and the roller shafts are installed in the inner space of the U-shape of the support 63.

[0055] Since one roller of the buffering dual-roller component 6 may be installed between the first set of auxiliary rollers, and the other roller may be installed between the second set of auxiliary rollers, thus when the buffering dual-roller component may be moved in a direction deviating from the conveying direction of the substrate, 6, the part of the substrate between the first set of auxiliary rollers and the second set of auxiliary rollers can be configured to move back and forth in the direction of conveying the substrate. The driving mode of the buffering dual-roller component 6 is not limited, and can be driven manually.

[0056] In aspects, a lifting member 8 may be provided to drive the buffering dualroller component 6. The type of the lifting member 8 is not limited. In aspects, the lifting member 8 may be an electric motor. The output shaft of the lifting member 8 may be drivingly connected to the buffering dual-roller component 6, in particular to the support 63 of the buffering dual-roller component 6. Thereby, when the lifting member 8 may be driven, the buffering dual-roller component 6 can be configured to move, in aspects in an up and down direction. It is easy to understand that, according to different system arrangements, the buffering dual-roller component 6 can be configured to move in other directions, for example, move in the horizontal direction. [0057] Also, when the first buffering roller 61 and the corresponding roller shaft and the second buffering roller 62 and the corresponding roller shaft are not connected to each other or separated from each other, two electric motors may be provided to drive the first buffering roller 61 and the second buffering roller 62 respectively. .

[0058] The driving roller 1 , the first set of auxiliary rollers including the first roller 2 and the second roller 3, the second set of auxiliary rollers including the third roller 10 and the fourth roller 7, and the buffering dual-roller component 6 constitute the substrate conveying system according to the disclosure. When operating the substrate conveying system, by moving the buffering dual-roller component 6, the part of the substrate S between the first set of auxiliary rollers and the second set of auxiliary rollers can be moved back and forth in the substrate conveying direction, and the substrate S. The rest of the first set of auxiliary rollers and the second set of auxiliary rollers do not move in the direction of substrate conveying.

[0059] The substrate conveying system or its start-stop buffering structure and the coating device 4 can be integrated into the slitting/rolling machine for the electrode substrate.

[0060] FIG. 2 is a right front view showing a coating system including a substrate conveying system according to the disclosure. In FIG. 2, the moving direction or moving path of the substrate S is indicated by arrows. Specifically, when the above-mentioned substrate conveying system is operated to convey the substrate S, the substrate S from the first reel 101 passes through the driving roller 1 , the first roller 2 of the first set of auxiliary rollers, and the buffering dual-roller component 6 in sequence. The first buffering roller 61 , the second roller 3 of the first set of auxiliary rollers, the coating device 4, the third roller 10 of the second set of auxiliary rollers, the second buffering roller 62 of the buffering dual-roller component and the second roller of the second set of auxiliary rollers a fourth roller 7, and finally wound on a second reel 102, wherein the substrate is coated with fluid as it passes through the coating device 4. During conveyance the substrate may be tensioned by the tensioning device 9. [0061 ] Typically, the start-stop operation of the coating system often occurs during the coating process, i.e. , in the case where a portion of the substrate has already been coated with the fluid. In the prior art, when the coating system is stopped and restarted, if the substrate is directly moved forward and the fluid is applied to the substrate, glue leakage or uneven coating may occur at the start-stop connection position of the substrate defect. Further, there is known a technique in which, when the coating system is restarted after being stopped, the motor is first reversed to retract the substrate, and then the substrate is driven forward and the fluid is applied to the substrate, whereby the start-stop connection position has been repeatedly coated, thus avoiding the defects of glue leakage or uneven coating. However, this technique involves the operation of almost the entire substrate conveying system, accelerating equipment aging and increasing energy consumption.

[0062] In contrast, using the substrate conveying system and coating system according to the disclosure improves the start-stop coating performance of the coating system, that is, improves the coating quality in the start-stop connection section of the substrate.

[0063] The operation principle of the substrate conveying system and the coating system of the disclosure will be described below with reference to FIG. 2.

[0064] Specifically, according to the disclosure, after the system stops, when it is necessary to restart the operation of the slitting machine/reel machine/coating system, a user may start the system, for example by pressing a start button for the start-stop control of the coating system. Thereafter, the substrate conveying system or the startstop buffering system (including the buffering dual-roller component 6 and the lifting member 8) may send an activation signal to command the buffering dual-roller component 6 of the start-stop buffering system to move downward (as indicated by the double-headed arrow). The lifting member 8 may execute the command to move downward, and makes the buffering dual-roller component 6 follow this command and descend a distance, in aspects approximately 3~5 cm (centimeters), thereby retreating/pul ling back the part of the electrode substrate 3 between the first set of auxiliary rollers and the second set of auxiliary rollers by approximately 6~10 cm. Since a coating has previously been applied to a previous part of the substrate, the nozzle or coating lip of the coating device 4 is now positioned above the electrode substrate which has been coated with a fluid such as glue.

[0065] After confirming that the retracting action of the substrate S has been completed, the movement control module 5 of the coating device 4, specifically its Z- axis moving module, drives the coating device 4 downward (as indicated by the doubleheaded arrow), thereby pressing the electrode substrate S on the hump support bar or on the support rod, that is, the electrode substrate S is pressed between the nozzle of the coating device 4 and the back rod. Once the nozzle has finished squeezing the electrode substrate S, the driving roller 1 may start to rotate, and the electrode substrate S may start moving forward again, and the metering component of the coating device 4. Thereafter, the VCP module may receive an open signal to start conveying fluid. The part of the electrode substrate S that is set back may pass through the nozzle again, thereby constituting the start-stop section of the electrode substrate S.

[0066] During the start-up acceleration phase of the substrate conveying system, the VCP module slowly conveys the fluid flow by controlling the air pressure. This prevents the immediate ejection of fluid upon opening, which could otherwise cause the coating to hammer and exceed thickness specifications. At the same time, the buffering dual-roller component 6 may slowly rise or return under the drive of the lifting member 8, and retract to the initial position before starting at a speed that may be lower than the running line speed of the substrate S. This ensures that the downward buffering action of the buffering dual-roller component 6 can be performed in the next startup of the start-stop control. In aspects, the VCP module performs flow control of the fluid flow so that the flow rate gradually increases from zero to normal flow during the period from the start-stop section of the electrode substrate S moving forward again to the start-stop section completely passing the nozzle. [0067] When the return of the buffering dual-roller component 6 is completed, the starting and stopping section of the substrate S may pass through the nozzle substantially completely. Then, the coating device 4 may perform a normal coating operation on the substrate S.

[0068] When it is necessary to stop the coating system again, the system may be stopped by a user, for example by pressing a stop button of the coating system or the substrate conveying system. This may send a stop signal to the start-stop buffering system. Driving roller 1 may start to decelerate. In aspects, the real-time line speed of the substrate S may be measured by an encoder. When it is detected that the conveyance of the electrode substrate S is about to stop, the VCP module of the coating device 4 may be closed in advance. In aspects, the advance distance may be no more than 0.5 cm relative to the substrate. After the VCP module of the coating device 4 is closed, the coating device 4 may move upward along the Z-axis under the control of the Z-axis movement control module (as indicated by the double-headed arrow). When necessary, the coating device 4 may move along the Y-axis to leave the substrate S under the control of the Y-axis movement control module.

[0069] Then, when the coating system needs to be restarted, a user may start the coating system, for example by pressing the start button for the start-stop control of the coating system again to send a start signal to the start-stop buffering system, and then repeat the subsequent operations to realize the start-stop of the coating connect.

[0070] According to the disclosure, the start-stop buffering structure makes the electrode substrate back/retract a certain distance during start-up. There is coating overlap between the end of the previous bead and the start of the next bead, making the coat thicker. This may facilitate finding precise connection points during coating. The actual parameters that may need to be adjusted to start and stop connections are greatly simplified. During the actuation process, the overlapping section of the bead, the actuation connection section, is recoated by the applicator lip. At the same time, use the VCP pump to control the amount of glue may be used. Thus, the coating system according to the disclosure can realize a coating that meets the thickness specification of the customer.

[0071 ] Cushioned overlapping sections reduce the need for leaks at the beginning and end of multiple beads. Even within the 6-10 cm overlap section, there may be some leakage, but the substrate will be fully covered when the second overlap is applied. Based on this, there is greater flexibility in adjusting the coating parameters during start-up and end-of-stop to ensure that the coating thickness of the start-stop connection section can reach approximately 10~20 urn.

[0072] The disclosure firstly may ensure the high-precision coating thickness in the process of start-stop connection. Its simple operation and wide range of parameter adjustment greatly reduce the time required for adhesive engineers or customers to debug during the on-site coating process. It also ensures long-term stability of operation. In addition, the overall structure is simple and occupies a minimum of space, which can be easily integrated into the slitter/roller of the substrate.

[0073] Specific embodiments of the disclosure have been described in detail above with reference to the accompanying drawings. It is anticipated that various changes and modifications may be made to the disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims.

[0074] List of reference signs:

1 Driving roller

2 First roll

3 Second roller

4 Coating device

5 Mobile Control Module

6 Buffering dual-roller component

61 First buffering roller

62 Second buffering roller

63 Support 7 Fourth roll

8 Lifting member

9 Tensioning device

10 Third roller

101 First reel

102 Second reel

S Substrate

[0075] The following are a number of nonlimiting EXAMPLES of aspects of the disclosure.

[0076] One EXAMPLE: a substrate conveying system includes a driving roller (1 ) configured to drive a substrate (S) and to move the substrate (S) in a substrate conveying direction. The substrate conveying system in addition includes a first set of auxiliary rollers (2, 3) that comprise a first roller (2) and a second roller (3), and the first set of auxiliary rollers (2, 3) are located downstream of the driving roller in the substrate conveying direction. The substrate conveying system moreover includes a second set of auxiliary rollers (7, 10) that comprise a third roller (10) and a fourth roller (7), and the second set of auxiliary rollers (7, 10) are located downstream of the first set of auxiliary rollers in the substrate conveying direction. The substrate conveying system also includes a buffering dual-roller component (6) that comprises a first buffering roller (61 ) and a second buffering roller (62), the first buffering roller being located between the first roller (2) and the second roller (3) of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller (10) and the fourth roller (7) of the second set of auxiliary rollers in the substrate conveying direction. The substrate conveying system further includes where the buffering dual-roller component (6) is configured to move relative to an original position, so that a part of the substrate (S) between the first roller (2) and the fourth roller (7) can be configured to move back and forth in the substrate conveying direction. [0077] The above-noted EXAMPLE may further include any one or a combination of more than one of the following EXAMPLES: The substrate conveying system of the above-noted EXAMPLE includes a lifting member (8) that is configured for lifting and lowering the buffering dual-roller component (6). The substrate conveying system of the above-noted EXAMPLE where the lifting member (8) includes an electric motor. The substrate conveying system of the above-noted EXAMPLE where the buffering dualroller component (6) includes a support (63). The substrate conveying system of the above-noted EXAMPLE where the first buffering roller (61 ) and the second buffering roller (62) of the buffering dual-roller component (6) have respective roller shafts connected to each other via the support. The coating system of the above-noted EXAMPLE and the coating system includes: a coating device (4), where the coating device (4) is located between the second roller (3) of the first set of auxiliary rollers (2, 3) and the third roller (10) of the second set of auxiliary rollers (7, 10) in the substrate conveying direction, and where the coating device (4) coats the substrate with a fluid when the substrate conveying system conveys the substrate (S) past the coating device (4). The coating system of the above-noted EXAMPLE where the coating device (4) is provided with a nozzle and a hump support bar facing each other. The coating system of the above-noted EXAMPLE where the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar. The coating system of the above-noted EXAMPLE where the coating device (4) is provided with a nozzle and a hump support bar facing each other, and where the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar. The coating system of the above-noted EXAMPLE where the coating device (4) comprises a metering component that comprises a high-precision metering pump (VCP). The coating system of the abovenoted EXAMPLE where the coating system is provided with a tensioning device (9) for tensioning the substrate. The coating system of the above-noted EXAMPLE where the tensioning device (9) is located between the coating device (4) and the third roller (10) of the second set of auxiliary rollers in the substrate conveying direction. The coating system of the above-noted EXAMPLE where the coating device (4) is provided with a shut-off valve located upstream of the nozzle of the coating device (4). The substrate conveying system of the above-noted EXAMPLE where the buffering dual-roller component (6) includes a support (63), and where the first buffering roller (61 ) and the second buffering roller (62) of the buffering dual-roller component (6) have respective roller shafts connected to each other via the support. The substrate conveying system of the above-noted EXAMPLE where the buffering dual-roller component (6) can be configured to move in a vertical direction relative to the original position thereof. The substrate conveying system of the above-noted EXAMPLE where the buffering dualroller component (6) can be configured to move in a horizontal direction relative to the original position thereof. The substrate conveying system of the above-noted EXAMPLE where the substrate conveying system comprises a first reel (101 ) and a second reel (102) for the substrate (S). The substrate conveying system of the above-noted EXAMPLE where the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction. The substrate conveying system of the above-noted EXAMPLE where the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction. The substrate conveying system of the above-noted EXAMPLE where the substrate conveying system comprises a first reel (101) and a second reel (102) for the substrate (S), where the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction, and where the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction.

[0078] One EXAMPLE: a substrate conveying system includes a driving roller (1 ) that can drive a substrate (S) to move in a substrate conveying direction. The substrate conveying system in addition includes a first set of auxiliary rollers (2, 3) that includes a first roller (2) and a second roller (3), and is located downstream of the driving roller in the substrate conveying direction. The substrate conveying system moreover includes a second set of auxiliary rollers (7, 10) that includes a third roller (10) and a fourth roller (7), and is located downstream of the first set of auxiliary rollers in the substrate conveying direction. The substrate conveying system also includes a buffering dualroller component (6) that includes a first buffering roller (61 ) and a second buffering roller (62), the first buffering roller being located between the first roller (2) and the second roller (3) of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller (10) and the fourth roller (7) of the second set of auxiliary rollers in the substrate conveying direction. The substrate conveying system further includes where the buffering dual-roller component (6) can be configured to move relative to an original position, so that a part of the substrate (S) between the first roller (2) and the fourth roller (7) can be configured to move back and forth in the substrate conveying direction.

[0079] The above-noted EXAMPLE may further include any one or a combination of more than one of the following EXAMPLES: The substrate conveying system of the above-noted EXAMPLE characterized in that the substrate conveying system comprises a lifting member (8) that is used for lifting and lowering the buffering dual-roller component (6). The substrate conveying system of the above-noted EXAMPLE characterized in that the lifting member (8) includes an electric motor. The substrate conveying system of the above-noted EXAMPLE characterized in that the buffering dual-roller component (6) includes a support (63), and the first buffering roller (61 ) and the second buffering roller (62) of the buffering dual-roller component (6) have their respective roller shafts connected to each other via the support. The coating system of the above-noted EXAMPLE where the coating device (4) is located between the second roller (3) of the first set of auxiliary rollers (2, 3) and the third roller (10) of the second set of auxiliary rollers (7, 10) in the substrate conveying direction, and the coating device (4) coats the substrate with a fluid when the substrate conveying system conveys the substrate (S) past the coating device (4). The coating system of the above-noted EXAMPLE characterized in that the coating device (4) is provided with a nozzle and a hump support bar facing each other, and the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar. The coating system of the above-noted EXAMPLE characterized in that the coating device (4) is provided with a metering component in the form of a VCP pump. The coating system of the above-noted EXAMPLE characterized in that the coating system is provided with a tensioning device (9) for tensioning the substrate. The coating system of the above-noted EXAMPLE characterized in that the tensioning device (9) is located between the coating device (4) and the third roller (10) of the second set of auxiliary rollers in the substrate conveying direction. The coating system of the above-noted EXAMPLE characterized in that the coating device (4) is provided with a shut-off valve located upstream of the nozzle of the coating device (4). The substrate conveying system of the above-noted EXAMPLE characterized in that the buffering dual-roller component (6) can be configured to move in a vertical direction relative to the original position thereof. The substrate conveying system of the above-noted EXAMPLE characterized in that, the buffering dual-roller component (6) can be configured to move in a horizontal direction relative to the original position thereof. The substrate conveying system of the above-noted EXAMPLE characterized in that the substrate conveying system has a first reel (101 ) and a second reel (102) for the substrate (S), the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction, and the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction.

[0080] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the disclosure. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. [0081 ] It will be understood that when an element such as a layer, region, or substrate is referred to as being "on" or extending "onto" another element, it can be directly on or extend directly onto another element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or extending "directly onto" another element, there are no intervening elements present. Likewise, it will be understood that when an element such as a layer, region, or substrate is referred to as being "over" or extending "over" another element, it can be directly over or extend directly over another element or intervening elements may also be present. In contrast, when an element is referred to as being "directly over" or extending "directly over" another element, there are no intervening elements present. It will also be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to another element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

[0082] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe a relationship of one element, layer, or region to another element, layer, or region as illustrated in the Figures. It will be understood that these terms and those discussed above are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures.

[0083] The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" when used herein specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. [0084] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0085] The many features and advantages of the disclosure are apparent from the detailed specification, and, thus, it is intended by the appended claims to cover all such features and advantages of the disclosure which fall within the true spirit and scope of the disclosure. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the disclosure to the exact construction and operation illustrated and described, and, accordingly, all suitable modifications and equivalents may be resorted to that fall within the scope of the disclosure.

Claims

CLAIMS:

1 . 1 . A substrate conveying system comprising: a driving roller (1 ) configured to drive a substrate (S) and to move the substrate (S) in a substrate conveying direction; a first set of auxiliary rollers (2, 3) that comprise a first roller (2) and a second roller (3), and the first set of auxiliary rollers (2, 3) are located downstream of the driving roller in the substrate conveying direction; a second set of auxiliary rollers (7, 10) that comprise a third roller (10) and a fourth roller (7), and the second set of auxiliary rollers (7, 10) are located downstream of the first set of auxiliary rollers in the substrate conveying direction; and a buffering dual-roller component (6) that comprises a first buffering roller (61 ) and a second buffering roller (62), the first buffering roller being located between the first roller (2) and the second roller (3) of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller (10) and the fourth roller (7) of the second set of auxiliary rollers in the substrate conveying direction, wherein the buffering dual-roller component (6) is configured to move relative to an original position, so that a part of the substrate (S) between the first roller (2) and the fourth roller (7) are configured to move back and forth in the substrate conveying direction.

2. The substrate conveying system according to claim 1 , further comprising a lifting member (8) that is configured for lifting and lowering the buffering dual-roller component (6).

3. The substrate conveying system according to claim 2, wherein the lifting member (8) includes an electric motor.

4. The substrate conveying system according to any of claims 1 -3, wherein the buffering dual-roller component (6) includes a support (63).

5. The substrate conveying system according to claim 4, wherein the first buffering roller (61 ) and the second buffering roller (62) of the buffering dual-roller component (6) have respective roller shafts connected to each other via the support.

6. The substrate conveying system according to claim 4, wherein the buffering dual-roller component (6) includes a support (63), and wherein the first buffering roller (61) and the second buffering roller (62) of the buffering dual-roller component (6) have respective roller shafts connected to each other via the support.

7. The substrate conveying system according to any of claims 1 -3, wherein the buffering dual-roller component (6) are configured to move in a vertical direction relative to the original position thereof.

8. The substrate conveying system according to any of claims 1 -3, wherein the buffering dual-roller component (6) are configured to move in a horizontal direction relative to the original position thereof.

9. The substrate conveying system according to any of claims 1 -3, wherein the substrate conveying system comprises a first reel (101 ) and a second reel (102) for the substrate (S).

10. The substrate conveying system according to claim 9, wherein the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction.

11 . The substrate conveying system according to claim 9, wherein the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction.

12. The substrate conveying system according to any of claims 1-3, wherein the substrate conveying system comprises a first reel (101 ) and a second reel (102) for the substrate (S), wherein the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction, and wherein the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction.

13. A coating system, comprising the substrate conveying system according to any of claims 1 -12 and the coating system further comprising: a coating device (4), wherein the coating device (4) is located between the second roller (3) of the first set of auxiliary rollers (2, 3) and the third roller (10) of the second set of auxiliary rollers (7, 10) in the substrate conveying direction, and wherein the coating device (4) coats the substrate with a fluid when the substrate conveying system conveys the substrate (S) past the coating device (4).

14. The coating system according to claim 13, wherein the coating device (4) is provided with a nozzle and a hump support bar facing each other.

15. The coating system according to claim 14, wherein the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar.

16. The coating system according to claim 13, wherein the coating device (4) is provided with a nozzle and a hump support bar facing each other, and wherein the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar.

17. The coating system according to claim 13 or 16, wherein the coating device (4) comprises a metering component that comprises a high-precision metering pump (VCP).

18. The coating system according to claim 13 or 16, wherein the coating system is provided with a tensioning device (9) for tensioning the substrate.

19. The coating system according to claim 18, wherein the tensioning device (9) is located between the coating device (4) and the third roller (10) of the second set of auxiliary rollers in the substrate conveying direction.

20. The coating system according to claim 13 or 16, wherein the coating device (4) is provided with a shut-off valve located upstream of the nozzle of the coating device (4).

21 . A substrate conveying system comprising: a driving roller (1 ) that can drive a substrate (S) to move in a substrate conveying direction; a first set of auxiliary rollers (2, 3) that includes a first roller (2) and a second roller (3), and is located downstream of the driving roller in the substrate conveying direction; a second set of auxiliary rollers (7, 10) that includes a third roller (10) and a fourth roller (7), and is located downstream of the first set of auxiliary rollers in the substrate conveying direction; a buffering dual-roller component (6) that includes a first buffering roller (61 ) and a second buffering roller (62), the first buffering roller being located between the first roller (2) and the second roller (3) of the first set of auxiliary rollers in the substrate conveying direction, and the second buffering roller being located between the third roller (10) and the fourth roller (7) of the second set of auxiliary rollers in the substrate conveying direction, wherein the buffering dual-roller component (6) are configured to move relative to an original position, so that a part of the substrate (S) between the first roller (2) and the fourth roller (7) are configured to move back and forth in the substrate conveying direction.

22. The substrate conveying system according to claim 21 , characterized in that the substrate conveying system comprises a lifting member (8) that is used for lifting and lowering the buffering dual-roller component (6).

23. The substrate conveying system according to claim 22, characterized in that the lifting member (8) includes an electric motor.

24. The substrate conveying system according to any of claims 21-23, characterized in that the buffering dual-roller component (6) includes a support (63), and the first buffering roller (61 ) and the second buffering roller (62) of the buffering dual- roller component (6) have their respective roller shafts connected to each other via the support.

25. The substrate conveying system according to any of claims 21-23, characterized in that the buffering dual-roller component (6) are configured to move in a vertical direction relative to the original position thereof.

26. The substrate conveying system according to any of claims 21-23, characterized in that, the buffering dual-roller component (6) are configured to move in a horizontal direction relative to the original position thereof.

27. The substrate conveying system according to any of claims 21-23, characterized in that the substrate conveying system has a first reel (101 ) and a second reel (102) for the substrate (S), the first reel (101 ) is located upstream of the driving roller (1 ) in the substrate conveying direction, and the second reel (102) is located downstream of the fourth roller (7) in the substrate conveying direction.

28. A coating system, characterized by comprising: a coating device (4); and a substrate conveying system according to any of claims 21-27, wherein the coating device (4) is located between the second roller (3) of the first set of auxiliary rollers (2, 3) and the third roller (10) of the second set of auxiliary rollers (7, 10) in the substrate conveying direction, and the coating device (4) coats the substrate with a fluid when the substrate conveying system conveys the substrate (S) past the coating device (4).

29. The coating system according to claim 28, characterized in that the coating device (4) is provided with a nozzle and a hump support bar facing each other, and the coating device (4) coats the substrate with a fluid when the substrate is conveyed between the nozzle and the hump support bar.

30. The coating system according to claim 28 or 29, characterized in that the coating device (4) is provided with a metering component in the form of a VCP pump.

31 . The coating system according to claim 28 or 29, characterized in that the coating system is provided with a tensioning device (9) for tensioning the substrate.

32. The coating system according to claim 31 , characterized in that the tensioning device (9) is located between the coating device (4) and the third roller (10) of the second set of auxiliary rollers in the substrate conveying direction.

33. The coating system according to claim 28 or 29, characterized in that the coating device (4) is provided with a shut-off valve located upstream of the nozzle of the coating device (4).